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Crosshead assembly of reciprocation pump

A crosshead and reciprocating pump technology, applied in the field of reciprocating pumps, can solve problems such as difficult lubrication, increased maintenance costs, and large frictional resistance, so as to improve lubricating ability and heat dissipation performance, avoid increasing misalignment, improve strength and The effect of stiffness

Inactive Publication Date: 2017-06-20
LANZHOU UNIVERSITY OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The crosshead in the existing design has the following problems: (1) The crosshead is in close contact with the guide plate during the reciprocating motion, which makes lubrication difficult, the frictional resistance is large, and a large amount of heat is generated and the heat dissipation is poor. Components prone to failure due to thermal fatigue
(2) In the existing design, the crosshead is directly made of wear-resistant materials or the bearing alloy is poured on the crosshead to alleviate friction and wear. However, if wear occurs, the misalignment between the piston rod and the crosshead will increase, which will affect the pump. The service life of the seal; at the same time, replacing the crosshead or the guide plate will greatly increase the maintenance cost

Method used

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  • Crosshead assembly of reciprocation pump
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  • Crosshead assembly of reciprocation pump

Examples

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Embodiment 1

[0011] Such as Figure 1~Figure 7 As shown, the crosshead assembly of a reciprocating pump includes a crosshead right side plate 2 and a crosshead left side plate 7, and the crosshead right side plate 2 and crosshead left side plate 7 are combined to form Flange 1; said crosshead right side plate 2 and crosshead left side plate 7 are connected by three pairs of bolts 8 and nuts 4; the inside of said crosshead right side plate 2 is provided with a first Recessed top column 5-2 and reinforcing rib 6; the inner side of the left side plate 7 of the cross head is provided with a second convex top column 5-1 and reinforcing rib 6; Protruding top pillars 5-1 are combined to form a top pillar 5 for generating supporting reaction force; at least 8 cylindrical roller bearings 9 are installed on the inside of the crosshead right side plate 2 and the crosshead left side plate 7 . The cylindrical roller bearings 9 are combined in pairs and installed on the four rollers 3 respectively. The...

Embodiment 2

[0013] Such as Figure 1~Figure 7 As shown, the crosshead assembly of a reciprocating pump includes a crosshead right side plate 2 and a crosshead left side plate 7, and the crosshead right side plate 2 and crosshead left side plate 7 are combined to form Flange 1; the inner side of the crosshead right side plate 2 is provided with a first concave head pillar 5-2 and a reinforcing rib 6; the inner side of the crosshead left side plate 7 is provided with a second convex head pillar 5 -1 and reinforcing rib 6; wherein, the first concave top column 5-2 is combined with the second convex top column 5-1 to form the top column 5, which is used to generate supporting reaction force; the crosshead right side plate 2 and the crosshead At least 8 cylindrical roller bearings 9 are installed on the inner side of the left side plate 7 . The cylindrical roller bearings 9 are combined in pairs and installed on four rollers 3 respectively; the characteristics of the rollers 3 also include: t...

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Abstract

A crosshead assembly of a reciprocation pump comprises a crosshead right side plate (2) and a crosshead left side plate (7). A first concave head jack prop (5-2) and a reinforcing rib (6) are arranged on the inner side of the crosshead right side plate (2). A second concave head jack prop (5-1) and a reinforcing rib (6) are arranged on the inner side of the crosshead left side plate (7). The reinforcing ribs (6) are arranged on the inner side of the crosshead right side plate (2) and the inner side of the crosshead left side plate (7).

Description

technical field [0001] The invention relates to the field of reciprocating pumps, in particular to a crosshead assembly of the reciprocating pump. Background technique [0002] Reciprocating pumps are widely used in the field of petroleum drilling and production machinery. With the gradual improvement of drilling technology and drilling equipment technology, there are higher and higher requirements for the pressure, displacement and power of reciprocating pumps. As a key component in the reciprocating pump, the crosshead is used to connect the connecting rod for rocking motion and the piston rod (or plunger) for reciprocating linear motion in the form of a hinge, and has the function of transmitting force and guiding. The crosshead in the existing design has the following problems: (1) The crosshead is in close contact with the guide plate during the reciprocating motion, which makes lubrication difficult, the frictional resistance is large, and a large amount of heat is gen...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04B53/14
CPCF04B53/14
Inventor 李鹏飞张洪生李越强武文凯姚千里罗远飞豆永坤徐光亿
Owner LANZHOU UNIVERSITY OF TECHNOLOGY
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