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Single-spring resettable safety valve

A safety valve and single-spring technology, which is applied to the components of pumping devices for elastic fluids, liquid fuel engines, mechanical equipment, etc., can solve the problems of unreasonable structural settings, inconvenient maintenance, poor adaptability, etc. Accuracy and service life, easy adjustment, strong adaptability

Active Publication Date: 2017-05-31
BAOJI PETROLEUM MASCH CO LTD +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a single spring resettable safety valve, which solves the problems of unreasonable structure setting, poor adaptability, easy damage and inconvenient maintenance in the prior art

Method used

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Embodiment Construction

[0029] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0030] The up, down, left, and right in the following description process are all concerned with the corresponding drawings, and the actual installation position can be deduced by analogy.

[0031] refer to figure 1 , figure 2 , image 3 , the structure of the present invention is to include a housing 1 as the installation body, the bottom flange of the lower part of the housing 1 is a mud inlet, and the lower right flange is a mud outlet; an oil cylinder assembly is horizontally arranged on the upper part of the housing 1, The lower part of the housing 1 is vertically provided with a mud cylinder assembly (the medium of the mud cylinder assembly inner chamber is mud) and a detection oil cylinder assembly 12, the lower end of the mud cylinder assembly is connected with the mud inlet, and the middle part of the mud cylinder assembly ( open...

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Abstract

The invention discloses a single-spring resettable safety valve. The single-spring resettable safety valve comprises a shell, a flange arranged at the bottom edge of the lower portion of the shell serves as a slurry inlet, and a flange arranged on the right side of the lower portion of the shell serves as a slurry outlet; an oil cylinder assembly is horizontally arranged on the upper portion of the shell, a slurry cylinder assembly and a detection oil cylinder assembly are vertically arranged on the lower portion of the shell, the lower end of the slurry cylinder assembly is communicated with the slurry inlet, and the middle of the slurry cylinder assembly is communicated with the slurry outlet; the cylinder body wall of the detection oil cylinder assembly is communicated with an oil storage cavity through a communication pipe, and the oil storage cavity is communicated with an oil cavity arranged on the outer side of the right end of an upper piston of the oil cylinder assembly and a cavity arranged at the outer end of the upper portion of a lower piston of the slurry cylinder assembly. The device is high in adaptability, simple in structure and convenient to maintain and adjust.

Description

technical field [0001] The invention belongs to the technical field of petroleum drilling equipment and relates to a single spring resettable safety valve. Background technique [0002] At present, the safety valves of drilling pumps mainly have two structures: shear safety valve and spring return safety valve. The upper connecting rod, crank and other parts transmit the pressure to the two load springs, the force of the high-pressure mud acting on the piston is balanced with the force of the load spring acting on the crank, and the safety valve is in a normal working (non-spraying) state. When the mud pressure rises to a certain value, the balance state of the crank-slider mechanism will be destroyed due to the force compression of the load spring, causing the piston to move upward to communicate with the mud inlet and outlet to realize spraying. [0003] Due to the exposure of the two load springs of the safety valve and its own structural characteristics, the adaptabilit...

Claims

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Application Information

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IPC IPC(8): E21B21/10F04B53/10
CPCE21B21/10F04B53/1022
Inventor 李永飞孙健李鹏举郝建旭王亚丽
Owner BAOJI PETROLEUM MASCH CO LTD
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