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You are here : The basis of metal bellows mechanical seal introduced
One bellows mechanical seal What are the characteristics
Compensation mechanism for the bellows, one of the seal ring (ring or static ring) and the ripple control as a whole, with no supporting ring, thus reducing a leak; while reducing friction compensation mechanism to improve the follow of ; for the welded metal bellows seal temperature limits are not supporting ring; for PTFE bellows seal can be used in corrosive media. Bellows mechanical seal bellows elastic drawback is some small, need to add auxiliary springs.
Second, bellows mechanical seal, which has several
Bellows mechanical seal a wide range of applications, from low to high temperature, from medium to corrosive media, from low speed to high speed, from the ordinary to the harsh working conditions can be selected.
All of these can change the geometry of the bellows (such as inside and outside diameter, thickness and wave number wave plate, etc.) and the elastic modulus, rate of change in the elastic bellows.
According to media corrosion, use of different materials such as corrugated tube.
Such as working pressure and temperature is not high in the neutral medium (oil and water, etc.), the simple choice of rubber bellows mechanical seal; in corrosive media (acid or alkali, etc.), manufacturer of corrugated PTFE optional pipe mechanical seals; high temperature and high speed, can be welded metal bellows mechanical seals.
Third, the metal bellows mechanical seal Troubleshooting
1) The loss of high temperature elastic bellows, high pressure (such as the heat pump) broken bellows.
2 in the trough between the wave plate prone to coking and coke formation, the bellows can not compensate for loss of elasticity, it can not be used coke, coke and crystallization of the pump.
3) External mechanical seal, seal chamber when the pressure exceeds 0.2mpa, able to open the sealing surface. This is because the smaller the elasticity of bellows, the media can not resist high pressure. Therefore, higher pressure can not be used externally mounted bellows mechanical seal.
4) The bellows mechanical seal is a balanced structure, must be accounted for when using the effective diameter and load factor. Otherwise, high pressure pumps propane and propylene in the instability, prone to "spraying drain" phenomenon.
Compensation mechanism for the bellows, one of the seal ring (ring or static ring) and the ripple control as a whole, with no supporting ring, thus reducing a leak; while reducing friction compensation mechanism to improve the follow of ; for the welded metal bellows seal temperature limits are not supporting ring; for PTFE bellows seal can be used in corrosive media. Bellows mechanical seal bellows elastic drawback is some small, need to add auxiliary springs.
Second, bellows mechanical seal, which has several
Bellows mechanical seal a wide range of applications, from low to high temperature, from medium to corrosive media, from low speed to high speed, from the ordinary to the harsh working conditions can be selected.
All of these can change the geometry of the bellows (such as inside and outside diameter, thickness and wave number wave plate, etc.) and the elastic modulus, rate of change in the elastic bellows.
According to media corrosion, use of different materials such as corrugated tube.
Such as working pressure and temperature is not high in the neutral medium (oil and water, etc.), the simple choice of rubber bellows mechanical seal; in corrosive media (acid or alkali, etc.), manufacturer of corrugated PTFE optional pipe mechanical seals; high temperature and high speed, can be welded metal bellows mechanical seals.
Third, the metal bellows mechanical seal Troubleshooting
1) The loss of high temperature elastic bellows, high pressure (such as the heat pump) broken bellows.
2 in the trough between the wave plate prone to coking and coke formation, the bellows can not compensate for loss of elasticity, it can not be used coke, coke and crystallization of the pump.
3) External mechanical seal, seal chamber when the pressure exceeds 0.2mpa, able to open the sealing surface. This is because the smaller the elasticity of bellows, the media can not resist high pressure. Therefore, higher pressure can not be used externally mounted bellows mechanical seal.
4) The bellows mechanical seal is a balanced structure, must be accounted for when using the effective diameter and load factor. Otherwise, high pressure pumps propane and propylene in the instability, prone to "spraying drain" phenomenon.
