How to remove the piston rod and crosshead connector of a reciprocating compressor?
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In a reciprocating compressor, the crosshead and piston rod are connected to the pressure generation unit; in order to detect seal leaks and determine why pressure cannot be built up, how should it be disassembled?
First, remove the end cover. Then rotate the pulley to align the nut of the crosshead with the window, loosen the nut, and use pipe wrenches to pull out the rod. Next, rotate the pulley again to push the rod out (shims can be used for this purpose), then pull it out through the end cover. Finally, tilt the crosshead and remove it from the window, doing so at a fixed angle.
I’m talking about large reciprocating compressors used in industry
Is it a seal leakage in the pressure pump? When repairing the pressure pump, the pressure at the connection point should be adjusted to 1400–1500 MPa. It can be removed without issue after it’s repaired. If the booster pump is repaired but still cannot be lowered, then it is necessary to obtain a hot work permit, conduct a hot work analysis, and cut off the piston rod. I am against destructive plans.
It’s not the pressure pump that’s broken; it’s the pressure element on the compressor that’s damaged. Destruction and demolition are not considered. Who has a way?
First, the injection molding method is used. It’s the same as using professional sealing agents for leak repair in Hejing. Second, remove the air valve and symmetrically insert shims of the same thickness on the cylinder crankcase side; it is best if the flywheel remains in place, and even better if the flywheel is equipped with a cranking gear. Use a jack to lift the flywheel, stretching the piston rod and loosening the threads. Also, for compressors using Shen gas, the pressure of the compressed gas is generally 150 MPa. The data on the fourth floor is incorrect; if it’s too high, permanent deformation will occur, and in that case the only option will be to demolish it. Don’t ask why; talking about it makes me cry...
Yes, it’s kilograms. It’s not MPa.
First, add some butter, then 123, 150 MPa, OK.
They are all people with experience, who have suffered greatly as a result; P
The internal seal of the pressure connection is not good enough to prevent oil from leaking; using butter to increase viscosity does help raise the pressure when testing it again
OP, are your machines also Shengyu’s piston engines?