On September 25, Du Shengli, a worker technician and director of the binary composite flooding station, developed a new piston pump Versa seat extractor. The device was evaluated by the Quality Control (QC) team at Shandong Shengli Gudao Oil Production Plant and received the highest overall score for "QC Results," winning the first prize. It will now be submitted to the Shengli Petroleum Administration for further recognition. This marks the first time a front-line worker from Gudong Oil Production Plant has won the top prize in QC results.
Piston pumps, especially those with Versa seats, often suffer from damage due to high-pressure hydraulic scouring. This leads to irregular grooves, pitting, and structural damage. Traditionally, workers would extract and replace the seat manually, but severe damage could cause misalignment in the three cross-bearing areas, leading to failed extraction and reduced performance. Typically, these seats could only be used 3–5 times before needing replacement. Using alternative tools to remove damaged seats often resulted in damage to the plunger pump's inlet valve chamber, reducing efficiency and increasing maintenance costs.
Du Shengli, a dedicated worker technician, frequently faced challenges during injection pump repairs due to difficult seat extractions, which sometimes led to valve cavity damage. Inspired by the principle of torque, he designed a new Versa seat extractor that uses the force generated by nuts and screws. By connecting two fixed round bases, the tool effectively extracts damaged seats without causing additional harm.
Since April 2007, after extensive on-site testing by Du Shengli and his team, the new Versa seat extractor was successfully tested on a 3ZP piston pump and has since been widely adopted across the Sansei Center. It completely resolved the issue of difficult seat extraction. Previously, removing a damaged seat took over 30 minutes; now, it can be done in under 10 minutes. The tool’s durability has also improved significantly, allowing it to be reused up to 15 times—up from just 3–5 uses before. This innovation has saved over 50,000 yuan annually in material costs for valve cores and seats, increased pump efficiency by 4 percentage points, and reduced the physical workload for workers while cutting down on maintenance time.
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