Rotary Joint To Select The Appropriate Sealing Method
The following are the same as the "If the working pressure of the rotary joint is higher than 3MPa, the double-end balanced type structure seal is used. If the joint pressure exceeds 15MPa,
We have to according to the transmission medium and working conditions and other conditions to choose a different rotary joint, and now the type of type of joint, the national standard rotary joint can not meet, but also customized non-standard rotary joint, but no matter what, Select the appropriate sealing method for the rotary joint.
In general, if the working pressure of the rotary joint is higher than 3MPa, the double-end balanced type structure is used. If the joint pressure exceeds 15MPa, the multi-stage sealing can be used. Note that the temperature of the transmission medium is not higher than 80 ° C. Sealing can be applied, the medium temperature is higher than 150 ° C mechanical seal for the high temperature seal, the use of welded metal bellows structure; high-speed rotary joint more static seal, if the rotary joint transmission medium corrosive weak, optional interior Type seal, if the transmission medium is strong corrosive seal with an external.
The following are the same as the "
Of course, the use of different types of rotary joint, there are some unique considerations, such as the commonly used high-speed, high pressure and high temperature rotary joint, high-speed rotary joint working speed can reach thousands of turn in such a high-speed rotation is not allowed Equipment directly reverse, you need to stop and then reverse, or a long time reversal will lead to bearing cowpea loose, the beginning may be no reaction but a long time, will damage the rotating joint bearings; high-pressure rotary joint can withstand hundreds Kg of pressure, but to gradually pressurized, one-time high pressure will crush the seal, causing the rotary joint leakage phenomenon; high temperature rotary joint maximum working temperature can reach 300 degrees, but also slowly heating, otherwise it will damage the internal parts , Or even cracked rotary joint.