Dealing with the issue of changing the sealing of the circular arc oil pump and installing the dynamic and static rings

【1】 Chemical reaction treatment changes the sealing problem of circular arc gear oil pump. The corrosion impact of circular arc gear oil pump in the complex environment of petrochemical production is relatively complex, and technical personnel are required to change the leakage problem of mechanical seals of circular arc gear oil pump from three levels:

(1) In the design, processing, and production programs of circular arc gear oil pump, the performance of the shell of the circular arc gear oil pump should be tested, and the environment composed of gas, liquid, solid, etc. generated by petrochemical production should be simulated. The shell of the circular arc gear oil pump should be placed in it and the degree of corrosion should be observed through recording to clarify the selection of durability materials for the shell of the circular arc gear oil pump

(2) In the production of petrochemicals, the installation work of the circular arc gear oil pump should be carried out by adjusting the various conditions around the circular arc pump and itself, creating a good working environment for the circular arc gear oil pump. Technical personnel should make appropriate adjustments to lubrication, compression, sealing, etc. to ensure that the circular arc gear oil pump adapts to the overall working environment

(3) Strengthen the operation of the circular arc gear oil pump, scientifically adjust the conveying pressure to change the working state of the mechanical operation of the circular arc gear oil pump, so that the various values generated by the chemical pump during operation meet the standard requirements, and avoid the occurrence of mechanical seal leakage problems

[2] Installation of Moving and Static Rings for Circular Arc Pump

(1) Installation of Static Rings

First, insert the sealing ring of the static ring from the rear of the static ring, and avoid rolling the sealing ring during operation;

; Press the static ring evenly and forcefully into the pressure cover. When pressing in, pay attention to aligning the groove of the static ring with the anti rotation pin on the pressure cover; Check the verticality between the end face of the static ring and the centerline of the gland, and control it within 0.02mm

(2) Installation of Moving Ring

When installing the moving ring, the compression amount of the circular arc pump should be determined first, and then the position of the spring seat fastening screw in the mechanical seal device should be accurately determined based on the compression amount of the circular arc pump.

. Staff need to pay special attention when installing the moving ring. When determining the compression amount of the circular arc pump, the axial displacement of the pump shaft of the circular arc pump should be included in its compression amount, otherwise the final result obtained will be inaccurate

After installing the moving ring of the circular arc pump, the staff also needs to check its floatability to see if it meets the elasticity and flatness requirements of the mechanical sealing device

If there is no leakage or if the amount of leakage is very small and gradually decreasing, then the device can be considered intact and can be put into production use. If the leakage is gradually increasing, the cause of the leakage should also be identified and reinstalled