Solution Strategy for Leakage of Circular Arc Pump during Petrochemical Construction and Installation of Dynamic and Static Rings

1. Solution Strategy for Gear Pump Leakage during Petrochemical Construction

Due to the nature of gear pumps during construction, prevention should be taken as the basis, and potential problems should be predicted and corresponding targeted measures should be taken.

. By strengthening the management and training of towing workers, increasing the protection of finished products, and formulating detailed protection measures to reduce mechanical seal wear caused by human factors, the service life of mechanical seals can be extended; Establish a list of vulnerable parts for mechanical seals of gear oil pumps and corresponding procurement plans to reduce leakage caused by aging of mechanical seal components due to prolonged storage

At present, within major petrochemical enterprises in China, new sealing materials have been used to replace traditional mechanical equipment sealing materials and have shown good performance. In addition, silicon carbide, as a very important component, can improve the corrosion performance of the entire mechanical equipment under the corrosion of various substances. At the same time, it also shows a significant effect on the mechanical sealing degree, which can reduce the adverse hazards that occur in the working process of petrochemical equipment

2. Installation of the moving and stationary rings of the circular arc gear pump

(1) Installation of the stationary ring

First, insert the stationary ring seal ring from the rear of the stationary ring to avoid rolling 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 gear pump should be determined first, and then the position of the spring seat top screw in the mechanical seal device should be accurately determined based on the compression amount of the circular gear pump.

. Staff need to pay special attention when installing the moving ring. When determining the compression amount of the circular gear pump, the axial displacement of the pump shaft of the circular gear 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 gear 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 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