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Pump head self-enhancing seal structure and self-enhancing device for pump head

A technology of sealing structure and head body, which is applied to the components of pumping devices for elastic fluids, pump testing, pump components, etc., can solve the problems that cannot meet the precise adjustment of pressure, pressure maintenance and gradual unloading of the pump head body, and achieve Novel structural design, guaranteed stability, and simple structure

Inactive Publication Date: 2013-07-10
YANGTZE UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

On the other hand, although the current pump head body self-strengthening device can reach a pressure of 500 MPa, it cannot meet the functional requirements of the pump head body to precisely adjust the pressure during the self-strengthening process, realize step-by-step loading, pressure maintenance and gradual unloading

Method used

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  • Pump head self-enhancing seal structure and self-enhancing device for pump head

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Embodiment Construction

[0015] The self-reinforcing sealing structure of the high-pressure pump head body includes an end cover 2 , a high-pressure pump head body 1 , and a discharge hole 3 , a suction hole 4 , a through hole 5 and a plunger hole 6 arranged in a cross shape in the high-pressure pump head body 1 . The plunger hole 6 of the high-pressure pump head body 1 is internally threaded with an end cover 2 , and a conical gland 7 is installed in the conical inner hole of the end cover 2 . The conical gland 7 is provided with a high-pressure liquid inlet hole 8 .

[0016] The discharge hole 3, the suction hole 4 and the through hole 5 of the high-pressure pump head body 1 are tapered holes respectively. A conical block 11 is respectively installed in the discharge hole 3 , the suction hole 4 and the through hole 5 through a fixing plate 9 and a screw 10 . The circumferences of the conical gland 7 and the conical block 11 are respectively provided with sealing grooves, and sealing rings 12 are in...

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Abstract

The invention relates to a pump head self-enhancing seal structure and a self-enhancing device for a pump head, and belongs to the technical field of pump head self-enhancement. The pump head self-enhancing seal structure comprises an end cover, a high-pressure pump head, a discharge hole, a suction hole, a through hole and a plunger hole. The discharge hole, the suction hole, the through hole and the plunger hole are arranged in the high-pressure pump head in a cross manner. The end cover is mounted on an inner thread of the plunger hole of the high-pressure pump body. The self-enhancing device comprises a low-pressure unit and a high-pressure unit, and the low-pressure unit is connected with a water feed pipe of the high-pressure unit through an ultrahigh-pressure pressurizer. During self-enhancement of the pump body, the self-enhancing device can realize loading and pressure maintaining in the process of self-enhancement and pressurization of the pump body through adjustment of the low-pressure unit. The problems that requirements on accurate pressure adjustment, step-by-step loading, pressure maintaining and step-by-step unloading cannot be met by an existing self-enhancing device for the pump head can be solved. A preset elastic-plastic deformation of the high-pressure pump head can be realized, and the purpose of improving fatigue strength of the high-pressure pump head can be achieved.

Description

technical field [0001] The invention relates to a self-reinforcing sealing structure of a pump head body and a self-reinforcing device used for the pump head body, belonging to the technical field of self-reinforcement of the pump head body. Background technique [0002] The self-reinforcement technology of the pump head body of the fracturing pump is a new technology gradually developed with the development of the fracturing process. The inner layer material of the pump head undergoes plastic deformation under the action of ultra-high pressure liquid, while the outer layer material is still in the elastic deformation stage. After the internal high pressure is removed, the outer layer material compresses the inner layer material to generate residual stress. Due to the existence of this residual stress, the maximum stress of the pump head body during work is reduced, and the overall stress distribution is more uniform, especially the stress concentration at the intersecting l...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04B51/00F04B53/00
Inventor 周思柱严奉林李宁李美求
Owner YANGTZE UNIVERSITY
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