Crosshead for plunger pump and manufacturing method thereof

Abstract

The invention discloses a crosshead for a plunger pump and a manufacturing method thereof. Type groove and connecting hole of the ejector rod; the connecting end of the crosshead body and the connecting rod is provided with a semi-arc surface, a platform, an inner plane, an avoidance groove and a fixing hole of the connecting rod; the middle part of the crosshead body is provided with two coaxial pin shafts holes; two pin holes are respectively arranged at the two ends of the semi-arc surface; the two pin holes are coaxial with the semi-arc surface; the pin holes pass through the wall thickness of the crosshead to the inner plane. The invention can improve the processing precision of the crosshead, make the crosshead cooperate with the connecting rod, the ejector rod and the shell more ideally, thereby improve the mechanical operation stability of the plunger pump, improve the service life of the crosshead, and reduce the deformation of the crosshead , improve the product quality; can simplify the crosshead processing process, improve production efficiency and reduce production costs.

Description

technical field [0001] The invention relates to the technical field of plunger pumps, in particular to a crosshead for a plunger pump and a manufacturing method thereof. Background technique [0002] As we all know, energy is the lifeblood of a country, and the ability to exploit new energy is subject to the country's technological level. The shale gas reserves in the world are very rich. The shale gas reserves in China’s basins and regions are about 15 trillion cubic meters to 30 trillion cubic meters, compared with the shale gas reserves of the United States (28.3 trillion cubic meters ) roughly equivalent, large shale gas reserves can have enormous economic value. However, the long production cycle is a notable feature of shale gas. The mining life of shale gas fields can generally reach 30 to 50 years, or even longer. The latest data from the U.S. Federal Geological Survey shows that the mining life of the Barnett shale gas field in the Fort Worth Basin of the United ...

AI Technical Summary

Problems solved by technology

[0005] 1. The existing crosshead processing method requires multiple clamping (6 or 7 times) for alignment. On the one hand, the processing error is large and the precision is not good. When the crosshead is matched with the connecting rod, ejector rod and shell , poor matching clearance and state, resulting in unstable mechanical operation and short service life of the plunger pump;

[0006] 2. On the other hand, the processing process is complicated. Under the same conditions, 6 or 7 pieces are processed per day per person at full capacity, which leads to low production efficiency and high production cost, and cannot guarantee the processing quality of the workpiece.

[0007] 3. The existing crosshead has a large amount of deformation, which affects product quality

[0008] 4. The existing crosshead is heavy, which is not conducive to energy saving

[0009] In summary, there are obviously inconveniences and defects in the actual use of the existing technology, so it is necessary to improve

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