2018-01-16 16:10:00 0
Gear oil pumps are of good quality and have a certain range of applications。 But the stainless steel gear oil pump will also have some unexpected failures when working, such as shutdown。 It is necessary for us to analyze the main reason for the downtime, so as to avoid unnecessary machine damage in the future。 The downtime is mainly caused by the failure of the mechanical seal。 After the gear oil pump stops running, the maintenance and seals fail。 Most of the manifestations of failure are leaks, and the causes of leaks are as follows:
The main reasons for the leakage of the sealing surface of the dynamic and static ring are: the flatness of the end surface, the roughness does not meet the requirements, or the surface is scratched; there is particulate matter between the end surfaces, which causes the two end surfaces to not operate the same; the installation is not in place and the method is incorrect.
Compensation ring seal ring leakage, the main reasons are: deformation of the gland, uneven preload force; incorrect installation; seal ring quality does not meet the standard; seal ring selection is not correct。
Vortex flowmeter gear oil pump after stopping the requirements:
Pumps that transport mediums that are easy to crystallize, easy to solidify, and easy to settle, should be blocked after stopping the pump, and flush the pump and pipeline with clean water or other medium in time.
The shutdown of the high-temperature pump should be carried out in accordance with the provisions of the technical documentation of the equipment. After the shutdown, it should be cranked half a circle every 20-30min until the temperature of the pump body drops to 50 ℃.
When the cryopump is stopped, the pump should always be filled with liquid when there is no special requirement; the suction valve and the discharge valve should be kept normally open; the cryopump with double-end mechanical seal, the liquid level controller and the sealing liquid in the pump seal chamber should be Maintain the grouting pressure of the pump。
After the centrifugal oil pump stops operating, the population valve of the pump should be closed, and the valves of the auxiliary system should be closed in sequence after the pump cools。 Drain the liquid accumulated in the pump to prevent corrosion and frost cracking。