Be a "Troubleshooter" of Hidden Troubles in Refining Equipment——Innovative Experts in the Maintenance Workshop of Daqing Petrochemical Refining Area

In the recent 2021 technological innovation achievements evaluated by Daqing Petrochemical Company, a number of innovative experts in the maintenance workshop of the company's equipment maintenance center refining area are on the list

Since the construction of the large oil refinery began in 2017, the oil refinery maintenance workshop union has actively carried out the activities of "Diligence in construction, good discovery during construction, and skillful innovation in production".

The first-stage work problem of the hydrogen compressor is solved

The second hydrogenation new hydrogen compressor of Daqing Petrochemical Refinery is a horizontal three-row three-stage compression reciprocating piston compressor.

The workshop organized technicians and team members through research and analysis and found that the fungus-shaped air valve contains a valve core and a spring, and has many sealing points, which is prone to leakage

Cheng Wenjie, a technician in the workshop, proposed to change the valve plate into an overall mesh structure

This plan has passed the professional research and repeated demonstrations of the mobile equipment of the refinery, and was modified last year on the hydrogen compressor of the second hydrogenation unit.

Let the centrifugal pump vibration no longer exceed the standard

Refined maintenance is the concept that the equipment maintenance center has always adhered to, and it is also the guideline for the maintenance workshop in the oil refinery area

"During the investigation, I found that several AY single-stage cantilever centrifugal water pumps had excessive vibration, but during the inspection and repair, I saw that the pump bearings, impellers, mouth rings, and various parts of the matching parts did not wear out, and the dynamic balance check deviation was also very small.

Based on this common feature, Shao Jun and the workshop technicians consulted relevant information and combined with years of technical accumulation and maintenance experience, and analyzed the cause of this phenomenon is the short distance between the support and thrust of the individual AY single-stage cantilever centrifugal water pump.

Shao Jun proposed to add a leg at the positioning bearing to form a fixed connection with the table and the bearing box.

In March 2020, after this plan was adopted and implemented on 10 pumps, the vibration value was reduced from 6.

One trick to solve the leakage of the big crane pipe seal

The trestle bridge in the oil refinery's oil loading workshop has a total of 26 closed crane pipes, which are responsible for the factory loading of Daqing Petrochemical's refined oil products.

Wang Peng, a technician in the repair shop, saw it in his eyes and remembered it in his heart

In April 2020, this program was implemented in the oil loading workshop.