high security bolt seals
high security bolt seals
2014年3月20日星期四
the relationship between personal interests
Food safety , the relationship between personal interests and the metal security seal of the people, to solve the current outstanding problems of food plastic padlock security seals, is placed in front of the government departments at all levels and is an important task.
the risk is inevitable and security seals
where there the place is not to risk management and control , the risk is inevitable and timely . According to accory high security bolt seals Law , the risk often occurs at the most difficult time, as the site is not for the risk management of risk bolt security seal, but to treat an attitude of risk, risk management approach is the most harmful changes . Of course, bolt security seals is essential to life , safety is the source of happiness , as the skies of people to return home safe .
every level of plastic truck seals to the people
Measures of health administrative departments established food safety rectification work leading group, establish and improve the law enforcement accountability security cable ties, so that at every level of plastic truck seals to the people. Actively carry out training for meter seals suppliers of food safety and hygiene knowledge, improve the management level and quality of employees of enterprises.
the safe operation container security seals at work
familiar with the safe operation container security seals at work in the strict demands on themselves, the strict, detailed, real words as a basic requirement for all the work, lay a solid container security seal to start from the basic, practical work in strict accordance with the production management system. Safety is a long-term arduous task, related to the healthy development of the company undetermined, long way to go, we have everyone happy relationship with a family, at work, be careful, for you and others Happiness, cable tie wraps protect yourself, eliminate all the tragedy, do not illegal operations, truly prepared, alarm bells ringing.
2014年3月18日星期二
Security label is security seal labels
Security label is a small sign with plastic security seals, security label with
combination form of text, graphics, symbols and code of dangerous chemicals and
security considerations, has a certain guarantee its safety factor. Fixed length
of the plastic numbered security seals
Latest dynamic, packaging, brand small parts, plastic truck security seals, as the most
professional safety culture and safety related products integrated provider, our
goal is through the wide range of products, the eternal innovation, professional
advisers, is committed to create for the customer safety, cleanliness, dynamic
work environment.
acoory Indicative security seal labels
Security label is a small sign with security, security label with
combination form of text,acoory Indicative seal graphics, symbols and code of dangerous chemicals and
security considerations, has a certain guarantee its safety factor. Fixed length
of the plastic sealLatest dynamic,security labels packaging, brand small parts, plastic seal, as the most
professional safety culture and safety related products integrated provider,luggage seals our
goal is through the wide range of products the eternalinnovation,professional
advisers, is committed to create for the customer safety, cleanliness, dynamic
work environment.
Traditional security seal labels disadvantages:
A ceramic bottle stopper securely sealed the utility model described by the cover, inside cover, a wine
Mouth, sealing plug , base and bottle components. Sealing plug on it to set up a face accory tamper seal tape along the lower, Located in the lower part of the outer surface of the annular seal number , the lower part of the mouth the wine out of a support tube inserted numbered security seals plug into the wall, the inner wall at the top of the cover has a seal , the cover features a rotating screw inside Teeth. Sealing plug on the end face of the end face of the ring with the bottle tightly together to form a seal, with An annular sealing ring and the plug axial interference with the bottle mouth portion and the axial cable security seals is formed by This implementation of the utility model double sealing function.
Personal security seal labels relationship happy family
By participating in the first group of special equipment for safe operation and management of knowledge and training, combined with my practical work experience, to talk about a few feelings; various departments of the Group leadership training very seriously, and ask each department to start with training, supervision and production line Accory high security seals responsibility to the people. Day's training really, in various forms, introduce vivid picture, relevant laws and regulations, one real case, coupled with analysis of the causes of the accident, to imbue the staff with advanced safety concept describes the establishment of emergency rescue mechanism Through this training and learning, we have made great progress in the safety concept, security cable ties awareness, safety and occupational risk prevention responsibilities in four areas, adhere to safety from verbal to practical action to implement, and continuously improve their professional quality,
2014年3月16日星期日
Security relationship high security seal labels
Security relationship you and me , the responsibility is extremely heavy
As a country with tremendous growth potential , particularly in the sensitive sectors of civil aviation industry is not there any pointAccory high security bolt seals errors , for aviation enterprises, insecurity is the norm , not found that the risk is the greatest risk , As a crew we have a responsibility to find tamper proof padlocks problems , which we define our security professional, only clear security responsibilities , we can assist the captain of flight safety , and we need to have a strong sense of responsibility and a highly sensitive insight, some time ago each of us looking for a source of danger , oh , we write are not the same , indicating that the hazards of our work environment there are still many , if perhaps become a little attention to metal security seals incident , in general, no What we can not guarantee security , only if we can clear up their responsibilities to fulfill their rights and duties with good , we want to continue to improve their capabilities and collaboration capabilities , so that we can return home safely .
Plastic truck seals with each person's health security seal labels
To this end, governments should launch a four-month product quality and food safety special rectification actions within the city . In recent years, a large number of detailed, solid work , health and Accory container security seals awareness of the city's food safety production units has been strengthened , food safety has become increasingly standardized market order . Food safety and sanitation has made some achievements, but the problems still can not be ignored . Measures of health
administrative departments established food plastic truck seals rectification work leading group , establish and improve the law enforcement accountability system , so that at every level of responsibility to the people . Actively carry out training for practitioners of food meter seals suppliers and hygiene knowledge , improve the management level and quality of employees of enterprises.
2013年12月16日星期一
Cold winter, the car how to better " moisturizer " mean ?
Now most of the northern region has entered the winter . People must be kept wet , the car also have to "moisture ." Face cold and dry , the most delicate parts of the car , including leather interior compartments , seats, the whole car and tire rubber seal materials , these tender parts in a dry environment easy to aging , wrinkling and even cracking, barrier security seals but just need a little aids plus your love, the problem is easily solved.
Leather interior , seat just like human skin , these leather products inside in a dry environment at once too much water loss will wrinkle even cracking. Cracks can restore people 's lips , really want to wait until the leather seats cracks may not be able to remedy it! Another problem is the treatment of these frequent contacts and body parts are not able to use oil-based protective agent - who are willing to sit in a chair beneath the greasy ass ? At this point we need to use leather conservation wax. In fact, this leather sofa in home care are also commonly used . It not only has a strong cleansing effect it clean , leather components can also keep up to one month moisturizing effect yet.
A large number of vehicles on the rubber seal is perhaps the most easily overlooked place. They shoulder a great responsibility for the vehicle waterproof, soundproof , but they are also vulnerable , prolonged exposure to air and low humidity will cause them to premature aging. Once the seal cracks on the car 's aging water, noise will have a huge impact . The same tire rubber material is also very fragile, dry environment in the long rubber material easily tire aging , and aging badly damaged once the tire wall , even if the tire tread is also deep there is no way to continue using it. Natural rubber parts for these moisturizing products also emerged , the market for sale is called " tire treasure" of the rubber material and maintenance agents , is dedicated to moisture supplies rubber components , its main function is to nourish , repair damaged rubber seal and tires ,tamper evident tapes slowing aging , and it is also in the maintenance of the same coating, when the car's four "feet" after a maintenance shiny black , you will find that your car is more than ever "handsome " was.
Leather interior , seat just like human skin , these leather products inside in a dry environment at once too much water loss will wrinkle even cracking. Cracks can restore people 's lips , really want to wait until the leather seats cracks may not be able to remedy it! Another problem is the treatment of these frequent contacts and body parts are not able to use oil-based protective agent - who are willing to sit in a chair beneath the greasy ass ? At this point we need to use leather conservation wax. In fact, this leather sofa in home care are also commonly used . It not only has a strong cleansing effect it clean , leather components can also keep up to one month moisturizing effect yet.
A large number of vehicles on the rubber seal is perhaps the most easily overlooked place. They shoulder a great responsibility for the vehicle waterproof, soundproof , but they are also vulnerable , prolonged exposure to air and low humidity will cause them to premature aging. Once the seal cracks on the car 's aging water, noise will have a huge impact . The same tire rubber material is also very fragile, dry environment in the long rubber material easily tire aging , and aging badly damaged once the tire wall , even if the tire tread is also deep there is no way to continue using it. Natural rubber parts for these moisturizing products also emerged , the market for sale is called " tire treasure" of the rubber material and maintenance agents , is dedicated to moisture supplies rubber components , its main function is to nourish , repair damaged rubber seal and tires ,tamper evident tapes slowing aging , and it is also in the maintenance of the same coating, when the car's four "feet" after a maintenance shiny black , you will find that your car is more than ever "handsome " was.
2013年12月9日星期一
How to correctly apply seals
Proper application of seals can improve the safety of work :
1 person has no right to sealed properly applied closure device in the vehicle Guankou unsealed .
(2) All drivers are not be altered by seals, wire seals such as the discovery of internal abnormalities , must live sealed, signed off by the client . While reporting to management personnel , business dedicated to confirm
3 the driver of the vehicle at the scene only Guankou sealed.
(4) Other personnel , such as work needs to be unsealed , shall notify customers unsealed and sealed together .
5 When Guankou device sealed , must be clearly visible logo and number on seals .
6 sealed after the first wire length should not exceed 1.5cm, cut off the excess wire rope shall be treated with diagonal pliers, pull out the head hole wire spread .
7 logo and number font is unclear,cable sealing the responsible person shall promptly report to the users , the timely replacement .
1 person has no right to sealed properly applied closure device in the vehicle Guankou unsealed .
(2) All drivers are not be altered by seals, wire seals such as the discovery of internal abnormalities , must live sealed, signed off by the client . While reporting to management personnel , business dedicated to confirm
3 the driver of the vehicle at the scene only Guankou sealed.
(4) Other personnel , such as work needs to be unsealed , shall notify customers unsealed and sealed together .
5 When Guankou device sealed , must be clearly visible logo and number on seals .
6 sealed after the first wire length should not exceed 1.5cm, cut off the excess wire rope shall be treated with diagonal pliers, pull out the head hole wire spread .
7 logo and number font is unclear,cable sealing the responsible person shall promptly report to the users , the timely replacement .
2013年11月3日星期日
Mechanical seal Principle Overview
Mechanical seal is by one pair or several pairs perpendicular to the axis relative to the sliding face in the fluid pressure and compensation institutions elastic ( or magnetic ) to keep under seal affixed to achieve the merger with auxiliary shaft seal leakage resistance device .
Mechanical seal used by the stationary ring ( stationary ring ) 1 , rotating ring ( ring ) 2 , the elastic member 3 , the spring seat 4 , set screws 5 , 6 rotating ring secondary seal , and the stationary ring secondary seal 8 and other components composition, anti-rotation pin 7 is fixed to prevent the gland 9 stationary ring is rotated . Rotating ring and the stationary ring often also according to whether they have the ability to compensate for axial cyclic or compensation is also referred to as compensation .
Mechanical seal possible leakage of fluid channels are A, B, C, D four channels.
C, D leakage channels are stationary ring and the gland , the gland seal between the housing , the two are static seal . B channel between the rotary shaft sealing ring and , when Friction and wear , it can follow the compensation ring only for a small amount of movement in the axial direction , in fact, still a relatively static seal .
Therefore, these leak paths are relatively easy closure. The most commonly used static sealing rubber O-ring or PTFE V-ring , and as compensation or stationary rotating ring ring ring secondary seal , sometimes using both elastic elements feature rubber, PTFE or metal bellows structures.
A channel is a rotating ring and the stationary ring opposite end faces sliding Lamination dynamic seal , it is the mechanical security seals device of the main seal , mechanical seal in determining the performance and life of the key.
Thus , the processing requirements of the seal face is high , while the sealing end faces in order to maintain the necessary lubrication film , the system must be strictly the end surface of the cavity pressure per unit area , the pressure is too large, difficult to form a stable lubricating film , will accelerate the end wear ; pressure is too small , increase of leakage . Therefore, to obtain good sealing performance and enough life , in the design and installation of mechanical seals , we must ensure that the pressure per unit area of face value in the most appropriate range.
Mechanical seal and soft packing seal comparison , has the following advantages: ① sealing is reliable in the long period of operation, the sealed state is very stable, very small leakage , according to rough statistics, the leakage is typically only soft packing seal 1/100 ;stainless steel cable ties ② long life in oil, aqueous medium, generally up to 1 to 2 years or more, usually in the chemical medium can be more than six months ; ③ friction power consumption is small mechanical seal friction power only soft packing seal 10% to 50%.
Mechanical seal used by the stationary ring ( stationary ring ) 1 , rotating ring ( ring ) 2 , the elastic member 3 , the spring seat 4 , set screws 5 , 6 rotating ring secondary seal , and the stationary ring secondary seal 8 and other components composition, anti-rotation pin 7 is fixed to prevent the gland 9 stationary ring is rotated . Rotating ring and the stationary ring often also according to whether they have the ability to compensate for axial cyclic or compensation is also referred to as compensation .
Mechanical seal possible leakage of fluid channels are A, B, C, D four channels.
C, D leakage channels are stationary ring and the gland , the gland seal between the housing , the two are static seal . B channel between the rotary shaft sealing ring and , when Friction and wear , it can follow the compensation ring only for a small amount of movement in the axial direction , in fact, still a relatively static seal .
Therefore, these leak paths are relatively easy closure. The most commonly used static sealing rubber O-ring or PTFE V-ring , and as compensation or stationary rotating ring ring ring secondary seal , sometimes using both elastic elements feature rubber, PTFE or metal bellows structures.
A channel is a rotating ring and the stationary ring opposite end faces sliding Lamination dynamic seal , it is the mechanical security seals device of the main seal , mechanical seal in determining the performance and life of the key.
Thus , the processing requirements of the seal face is high , while the sealing end faces in order to maintain the necessary lubrication film , the system must be strictly the end surface of the cavity pressure per unit area , the pressure is too large, difficult to form a stable lubricating film , will accelerate the end wear ; pressure is too small , increase of leakage . Therefore, to obtain good sealing performance and enough life , in the design and installation of mechanical seals , we must ensure that the pressure per unit area of face value in the most appropriate range.
Mechanical seal and soft packing seal comparison , has the following advantages: ① sealing is reliable in the long period of operation, the sealed state is very stable, very small leakage , according to rough statistics, the leakage is typically only soft packing seal 1/100 ;stainless steel cable ties ② long life in oil, aqueous medium, generally up to 1 to 2 years or more, usually in the chemical medium can be more than six months ; ③ friction power consumption is small mechanical seal friction power only soft packing seal 10% to 50%.
2013年11月1日星期五
Leakage gasket
The gasket leakage :
General gasket leaks , there are four forms: interface leak , leak penetration , diffusion leaks, damage leak.
Interface Leak : The interface is not as gasket compression flange surface finish combined with improper flange deformation etc will leak in the sealed interface . For interface World leakage , the use of padded material can be clamped against the flange surface .
Penetration leak: Because the soft material of the material are mostly fiber, easy to dip appropriate media , in particular pressure . Due to capillary phenomenon,Fixed Length plastic seals the medium will penetrate into the low pressure side to form infiltration.
Diffusion Leakage: poor concentration , driven by the media or by sealing the gap sealing material produced by mass transfer and capillary leak . Diffusion is the result of molecular motion , and not one-way. Minimal pressure or vacuum in a sealed state , or sealed nitrogen, hydrogen and other permeable substances, as well as highly toxic , radioactive substances should pay special attention penetration and proliferation of two kinds of leaks.
Destruction Leakage: sealing parts relatively poor working conditions , thermal deformation, often affected by vibration, shock , improper installation , fastening force is too large , used repeatedly , deformation , stress concentration, fatigue strength and damage than the material aging , deterioration etc will cause damage leak. pull tight seal This leakage causes the greatest impact hazard is also large , to strengthen prevention.
General gasket leaks , there are four forms: interface leak , leak penetration , diffusion leaks, damage leak.
Interface Leak : The interface is not as gasket compression flange surface finish combined with improper flange deformation etc will leak in the sealed interface . For interface World leakage , the use of padded material can be clamped against the flange surface .
Penetration leak: Because the soft material of the material are mostly fiber, easy to dip appropriate media , in particular pressure . Due to capillary phenomenon,Fixed Length plastic seals the medium will penetrate into the low pressure side to form infiltration.
Diffusion Leakage: poor concentration , driven by the media or by sealing the gap sealing material produced by mass transfer and capillary leak . Diffusion is the result of molecular motion , and not one-way. Minimal pressure or vacuum in a sealed state , or sealed nitrogen, hydrogen and other permeable substances, as well as highly toxic , radioactive substances should pay special attention penetration and proliferation of two kinds of leaks.
Destruction Leakage: sealing parts relatively poor working conditions , thermal deformation, often affected by vibration, shock , improper installation , fastening force is too large , used repeatedly , deformation , stress concentration, fatigue strength and damage than the material aging , deterioration etc will cause damage leak. pull tight seal This leakage causes the greatest impact hazard is also large , to strengthen prevention.
2013年10月31日星期四
High performance soft seal butterfly valve
Characterized in that : said seat ring by a T -shaped tamper evident tape ring on both sides of the soft multi-layer stainless steel sheet .
Valve plate and valve seat sealing surface for the oblique cone structure , oblique cone surface of the valve plate welding temperature, corrosion resistant alloy material ; adjusting ring plate fixed on the spring between the platen adjustment screw assembly structures. This structure effectively compensate for tolerances between the sleeve and the valve stem in the medium band and elastic deformation under pressure to solve the two-way valve in the transmission medium of exchange sealing problems exist in the process .
Use of soft T seals on both sides of multilayer stainless steel sheet , with a metal seal and soft seal the dual advantages of both low and high temperatures, both with zero leakage sealing performance . Test proved positive Chi flow state ( medium flow direction and the disc rotation in the same direction ) , the sealing surface pressure is the transmission of torque and media pressure on the valve plate produced by interaction . Forward medium pressure increases, the valve plate oblique cone surface and the valve seat sealing surface squeezed more tightly , sealing the better .
When the counter state, the valve plate and valve seat seal for containers between the drive torque to the valve plate is pressed against the valve seat . With reverse media pressure , the valve plate and valve seat pressure between the units is less than the medium pressure, adjusting ring spring contained in the subject after the deformation energy stored in compensation valve plate and valve seat sealing surface of the clamping pressure play the role of automatic compensation .
Therefore, the utility model, unlike the existing technologies, as the valve plate mounting hardware multi ring, but directly mounted on the valve body , the middle seat in the platen and an additional adjustment ring is a very good way to two-way seal . It can replace the valve, and ball valve .
Valve plate and valve seat sealing surface for the oblique cone structure , oblique cone surface of the valve plate welding temperature, corrosion resistant alloy material ; adjusting ring plate fixed on the spring between the platen adjustment screw assembly structures. This structure effectively compensate for tolerances between the sleeve and the valve stem in the medium band and elastic deformation under pressure to solve the two-way valve in the transmission medium of exchange sealing problems exist in the process .
Use of soft T seals on both sides of multilayer stainless steel sheet , with a metal seal and soft seal the dual advantages of both low and high temperatures, both with zero leakage sealing performance . Test proved positive Chi flow state ( medium flow direction and the disc rotation in the same direction ) , the sealing surface pressure is the transmission of torque and media pressure on the valve plate produced by interaction . Forward medium pressure increases, the valve plate oblique cone surface and the valve seat sealing surface squeezed more tightly , sealing the better .
When the counter state, the valve plate and valve seat seal for containers between the drive torque to the valve plate is pressed against the valve seat . With reverse media pressure , the valve plate and valve seat pressure between the units is less than the medium pressure, adjusting ring spring contained in the subject after the deformation energy stored in compensation valve plate and valve seat sealing surface of the clamping pressure play the role of automatic compensation .
Therefore, the utility model, unlike the existing technologies, as the valve plate mounting hardware multi ring, but directly mounted on the valve body , the middle seat in the platen and an additional adjustment ring is a very good way to two-way seal . It can replace the valve, and ball valve .
2013年10月28日星期一
Porous mechanical seal processing methods Analysis
Mechanical seal mechanical security seals structure of porous structure. Ring seal ring is flat, flat end face of the stationary ring arranged with uniform pores rules to form a porous face. Microporous round hole, oval hole or tapered bore.
Diameter from a few microns to hundreds of microns, hole depth from a few microns to tens of microns, porosity (pore area percentage of the total face area) from 5% to 30%.indicative seals The surface roughness of the porous end with the same stationary ring surface roughness, Ra are 0.01 ~ 0.02μm.
Porous mechanical seal processing methods
Cover depth micron processing flow slots or pores, conventional machining methods are almost powerless. So people explored a variety of processing methods, mainly the following: photochemical etching process (photolithography), EDM (electric etching), electrochemical machining and laser processing method.
Compared to conventional processing techniques, laser processing for a wide range of different materials, different shapes are suitable for machined surfaces with no mechanical deformation of the workpiece, clean, fast, good repeatability and high degree of automation. Obviously, for the porous mechanical seal rings, the other processing methods are powerless, only the use of the laser processing method in order to obtain satisfactory results.
Friction performance test
End load with the seal ring, respectively, and the common seal ring laser processing porous comparison test, two kinds of seal ring face size, surface roughness, end load and speed, etc. are identical test conditions, carbon graphite material of the seal ring sealing ring paired with both tests run. Laser Surface mechanical seal mechanical seal friction coefficient than the average coefficient of friction is much lower. From the friction coefficient of view, high security bolt sealsordinary mechanical seal friction coefficient in boundary friction state, and laser processing porous mechanical seal friction coefficient in mixed and even liquid friction state, therefore, the laser processing of porous seal ring seal rings than ordinary has better friction properties.
Diameter from a few microns to hundreds of microns, hole depth from a few microns to tens of microns, porosity (pore area percentage of the total face area) from 5% to 30%.indicative seals The surface roughness of the porous end with the same stationary ring surface roughness, Ra are 0.01 ~ 0.02μm.
Porous mechanical seal processing methods
Cover depth micron processing flow slots or pores, conventional machining methods are almost powerless. So people explored a variety of processing methods, mainly the following: photochemical etching process (photolithography), EDM (electric etching), electrochemical machining and laser processing method.
Compared to conventional processing techniques, laser processing for a wide range of different materials, different shapes are suitable for machined surfaces with no mechanical deformation of the workpiece, clean, fast, good repeatability and high degree of automation. Obviously, for the porous mechanical seal rings, the other processing methods are powerless, only the use of the laser processing method in order to obtain satisfactory results.
Friction performance test
End load with the seal ring, respectively, and the common seal ring laser processing porous comparison test, two kinds of seal ring face size, surface roughness, end load and speed, etc. are identical test conditions, carbon graphite material of the seal ring sealing ring paired with both tests run. Laser Surface mechanical seal mechanical seal friction coefficient than the average coefficient of friction is much lower. From the friction coefficient of view, high security bolt sealsordinary mechanical seal friction coefficient in boundary friction state, and laser processing porous mechanical seal friction coefficient in mixed and even liquid friction state, therefore, the laser processing of porous seal ring seal rings than ordinary has better friction properties.
2013年10月11日星期五
Rotating cell to ring mounting method
Installation Instructions:
1 cusp requirements deburring, vehicle seals chamfering blunt or install seals case of thread, requiring additional protection to prevent damage to seals.
(2) Any rust , dirt , debris or foreign particles must be removed.
3 not allowed to use the tools with sharp corners .
4 Before installation , cylinder, rotary shaft and seals need to apply oil or grease . If grease, its composition does not contain solid additives ( such as molybdenum disulfide, zinc sulfide or the like ) .
5 . PTFE slip ring can be in oil or water heated to 80 ~ 120 ℃, PTFE slip ring expands , it is easier to install on the piston or rod .
Mounting shaft rotary Grameen circle :
Shaft rotation Grameen ring is usually installed in a closed groove :
1 . The first O-ring into the groove , while pressing the PTFE slip ring heart shape , but be careful to prevent breakage
(2) the state of the pressure on the slip ring PTFE O- ring , and then a rod ( usually with 10 ~ 15 °) direction of the arrow Flatten PTFE slip ring , to restore the original size security seals .
1 cusp requirements deburring, vehicle seals chamfering blunt or install seals case of thread, requiring additional protection to prevent damage to seals.
(2) Any rust , dirt , debris or foreign particles must be removed.
3 not allowed to use the tools with sharp corners .
4 Before installation , cylinder, rotary shaft and seals need to apply oil or grease . If grease, its composition does not contain solid additives ( such as molybdenum disulfide, zinc sulfide or the like ) .
5 . PTFE slip ring can be in oil or water heated to 80 ~ 120 ℃, PTFE slip ring expands , it is easier to install on the piston or rod .
Mounting shaft rotary Grameen circle :
Shaft rotation Grameen ring is usually installed in a closed groove :
1 . The first O-ring into the groove , while pressing the PTFE slip ring heart shape , but be careful to prevent breakage
(2) the state of the pressure on the slip ring PTFE O- ring , and then a rod ( usually with 10 ~ 15 °) direction of the arrow Flatten PTFE slip ring , to restore the original size security seals .
2013年9月17日星期二
Pump Mechanical Seal Overhaul Mistakes
1 greater the amount of spring compression seal better. In actual fact , the spring compression excessive friction can cause rapid wear , instantly burning ; excessive compression of the spring to lose the ability to adjust the ring face , resulting in seal failure.
2 ring seal Fig tight as possible . In fact, ring seals tight harm than good. First exacerbate inter- ring and sleeve wear, premature leakage ; Second, increasing the axial adjustment ring , the resistance movement , frequent changes in operating conditions can not make timely adjustments ; Third spring fatigue easily damaged ; four is to make the ring seal deformation, affecting the sealing effect.
3 stationary ring seal tight as possible . Stationary ring seals basically at a standstill , the effect will be relatively tight seal better, but too tight is harmful. One cause static ring seals due to excessive deformation, affecting the sealing effect ; Second, the majority of graphite stationary ring material , generally more brittle , excessive force can easily cause fragmentation ; three is to install , difficult to remove , easy to damage the stationary ring .
4 Impeller lock nut tight as possible . Mechanical seal leakage , the leakage between the sleeve and the shaft ( shaft between the leak ) is relatively common . Generally, the impeller shaft between the leak is not locking the lock master , in fact, lead to leakage between axes many factors , such as the failure of inter-axis pad , offset , there are impurities between axes , with the shaft and sleeve at a larger shape bit error , the contact surface damage , there is a gap between the shaft parts , threaded shaft is too long , and this will lead to leakage between the shafts . Lock nut locking pad between axes can only lead to excessive premature failure , contrary moderate lock locked mother , so that the shaft between the pads always maintain a certain degree of compression flexibility in operation will be automatically timely lock nut locking , so that the shaft is always in a good inter- the sealed state .
5 The new better than the old . In contrast, using the new mechanical seal better than the old , but the new mechanical security stickers quality or choice of material is not the time , with the larger size of the error will affect the sealing effect ; and permeability in the polymerization medium, the stationary ring without excessive wear, or not to replace as well. Because static ring stationary ring seat for a long time in a quiescent state , the polymer and impurities deposited as a whole, played a good seal.
6 overhaul better than not split . Once the mechanical seal leakage will be eager to overhaul , in fact , sometimes sealed and not damaged , simply adjust the working conditions or thecontainer seal can be adjusted to eliminate leakage. This way to avoid waste and to verify their ability to judge the fault has accumulated experience in maintenance to improve the quality of maintenance .
2 ring seal Fig tight as possible . In fact, ring seals tight harm than good. First exacerbate inter- ring and sleeve wear, premature leakage ; Second, increasing the axial adjustment ring , the resistance movement , frequent changes in operating conditions can not make timely adjustments ; Third spring fatigue easily damaged ; four is to make the ring seal deformation, affecting the sealing effect.
3 stationary ring seal tight as possible . Stationary ring seals basically at a standstill , the effect will be relatively tight seal better, but too tight is harmful. One cause static ring seals due to excessive deformation, affecting the sealing effect ; Second, the majority of graphite stationary ring material , generally more brittle , excessive force can easily cause fragmentation ; three is to install , difficult to remove , easy to damage the stationary ring .
4 Impeller lock nut tight as possible . Mechanical seal leakage , the leakage between the sleeve and the shaft ( shaft between the leak ) is relatively common . Generally, the impeller shaft between the leak is not locking the lock master , in fact, lead to leakage between axes many factors , such as the failure of inter-axis pad , offset , there are impurities between axes , with the shaft and sleeve at a larger shape bit error , the contact surface damage , there is a gap between the shaft parts , threaded shaft is too long , and this will lead to leakage between the shafts . Lock nut locking pad between axes can only lead to excessive premature failure , contrary moderate lock locked mother , so that the shaft between the pads always maintain a certain degree of compression flexibility in operation will be automatically timely lock nut locking , so that the shaft is always in a good inter- the sealed state .
5 The new better than the old . In contrast, using the new mechanical seal better than the old , but the new mechanical security stickers quality or choice of material is not the time , with the larger size of the error will affect the sealing effect ; and permeability in the polymerization medium, the stationary ring without excessive wear, or not to replace as well. Because static ring stationary ring seat for a long time in a quiescent state , the polymer and impurities deposited as a whole, played a good seal.
6 overhaul better than not split . Once the mechanical seal leakage will be eager to overhaul , in fact , sometimes sealed and not damaged , simply adjust the working conditions or thecontainer seal can be adjusted to eliminate leakage. This way to avoid waste and to verify their ability to judge the fault has accumulated experience in maintenance to improve the quality of maintenance .
2013年9月9日星期一
Sunshine plate sealing tape Caution
Sunshine board the original tape. Only used for temporary protection sheet edge is intolerant of aging in the installation project, according to size cutting board , after cutting the tape must be project-specific installation requirements of regulations by the end wire seals plate bore grid, replacing the original tape down . Special tape installation works should good weather resistance , long-term use without losing its adhesion and mechanical strength , the installation operation, when taping .
To note the following:
( A ) ensure the plate edges are smooth .
( 2 ) to all wells blown clean , compressed air must be free of any impurities and dry .
( 3 ) To guarantee that using profiles, metal cover , protective ends of the U-shaped groove of the tape completely covers the installation is complete, there should not be exposed parts.
( 4 ) was added to the pre- installed before installing the final tape to check whether the loss , metal seal damage is found tape , must be replaced.
To note the following:
( A ) ensure the plate edges are smooth .
( 2 ) to all wells blown clean , compressed air must be free of any impurities and dry .
( 3 ) To guarantee that using profiles, metal cover , protective ends of the U-shaped groove of the tape completely covers the installation is complete, there should not be exposed parts.
( 4 ) was added to the pre- installed before installing the final tape to check whether the loss , metal seal damage is found tape , must be replaced.
2013年8月16日星期五
New technologies spherical diaphragm seal
With the petrochemical and coal chemical industry, high temperature, high pressure, medium and large-diameter high-risk, high flow heat exchangers such high-parameters in the device more and more applications, the traditional port sealing technology is facing new challenges. For example, the high temperature and pressure critical hydrogen exchanger tube box sealing device using a variety of structures, from the traditional long-necked flanges threaded locking ring seal structure to simplify its internal and external laps bolt seal structure, then Ω-ring seal structure, leakage occurred through the tube box case.
If the combination of these two advantages of the traditional structure, the diaphragm seal welded security seals and integration of the spherical diaphragm seal technology for high-parameter heat exchanger tube ends ports sealed container, it should obtain a simple structure, reliable sealing effect.
Conventional welding seal not often used in harsh conditions, removal of the flange joints, may be placed gaskets, simple structure, which does not belong to the structure of gasket pressure than more securely seal suitable for high temperature operation or temperature variation in a heat exchanger. On the other hand, the diaphragm seals in valves and pipe fittings in their long history, technology and reliable.
Diaphragm seal technology reduces spherical sealing surface, welded seal and reliable, and the middle part of the diaphragm has a certain elasticity, elastic deformation of the protective seal (truck seal)welding. Simple structure. Manufacture, installation cycle is short, simple maintenance and low total cost. In addition, generally used in austenitic stainless steel spherical diaphragm, on certain media can also play a role in the corrosion lining.
But at the same time, pointed out that the spherical diaphragm seal is a relatively new sealing technology structure, although foreign countries have good engineering applications, but Chinese domestic understanding and application of the technology has just started, it needs to further understanding and knowledge.
If the combination of these two advantages of the traditional structure, the diaphragm seal welded security seals and integration of the spherical diaphragm seal technology for high-parameter heat exchanger tube ends ports sealed container, it should obtain a simple structure, reliable sealing effect.
Conventional welding seal not often used in harsh conditions, removal of the flange joints, may be placed gaskets, simple structure, which does not belong to the structure of gasket pressure than more securely seal suitable for high temperature operation or temperature variation in a heat exchanger. On the other hand, the diaphragm seals in valves and pipe fittings in their long history, technology and reliable.
Diaphragm seal technology reduces spherical sealing surface, welded seal and reliable, and the middle part of the diaphragm has a certain elasticity, elastic deformation of the protective seal (truck seal)welding. Simple structure. Manufacture, installation cycle is short, simple maintenance and low total cost. In addition, generally used in austenitic stainless steel spherical diaphragm, on certain media can also play a role in the corrosion lining.
But at the same time, pointed out that the spherical diaphragm seal is a relatively new sealing technology structure, although foreign countries have good engineering applications, but Chinese domestic understanding and application of the technology has just started, it needs to further understanding and knowledge.
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