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A large range pressure regulating valve

A technology of pressure adjustment and large range, which is applied in the direction of valve devices, valve details, sliding valves, etc., which can solve the problems of small pressure adjustment range and flow adjustment range, and difficulty in pressure adjustment, so as to meet the requirements of large pressure difference, simple structure, cleverly designed effects

Inactive Publication Date: 2019-07-02
NORTHEAST GASOLINEEUM UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the technical problems encountered at present are: the pressure adjustment range and flow adjustment range that the existing pressure regulating valve can meet are relatively small, and the relationship between the stroke and pressure of the pressure regulating valve is not linear. The range of change with the stroke is very large. In the case of a large opening, the change of the pressure with the stroke is very small, and it is difficult to adjust the pressure that needs to be adjusted.

Method used

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  • A large range pressure regulating valve
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  • A large range pressure regulating valve

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Embodiment Construction

[0023] The present invention will be further described below in conjunction with accompanying drawing:

[0024] Such as Figure 1 to Figure 7 As shown, this large-range pressure regulating valve includes a valve body 2, a valve core 3, a valve plug 4, a valve cover 5, an actuator 6 and a diverter valve 1, and its unique features are:

[0025] The valve body, the valve core, the valve plug, the valve cover, and the actuator are installed in sequence and arranged coaxially, and the actuator is a hydraulic cylinder. Wherein, the valve body and the valve cover are connected by bolts, and there is a sealing ring in the middle for sealing; the valve body is provided with a threaded medium inlet 8 and a medium outlet 9 . The medium inlet and the medium outlet are communicated through an L-shaped liquid flow channel, and the inlet and outlet of the diverter valve are respectively communicated with the medium inlet and the medium outlet of the valve body through bypass pipelines. The...

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Abstract

A large range pressure regulating valve. The main purpose of the invention is to provide a pressure regulating valve which is used in a screw pump performance testing test bench to facilitate the testing of the screw pump. It is characterized in that: the valve body, valve core, valve plug, valve cover, and actuator are coaxially arranged; the valve body is provided with a threaded medium inlet and a medium outlet, and the medium inlet and medium outlet are connected through an L-shaped liquid flow channel , the inlet and outlet of the diverter valve are connected with the medium inlet and medium outlet; the valve core is placed vertically in the L-shaped liquid flow channel, the valve core has a central cavity, and an irregular liquid flow outlet is opened on the outer wall of the cavity, and the valve plug is located at In the central cavity, the valve plug can move vertically so that the irregular liquid flow outlet is completely closed or fully opened; the irregular liquid flow outlet is composed of two right-angled trapezoids, and the vertical length accounts for at least half of the height of the valve core , towards the medium outlet position on the valve body; the bottom of the valve plug is provided with a small hole at the bottom of the valve plug and a small hole on the side of the valve plug.

Description

[0001] Technical field: [0002] The invention relates to a large-range pressure regulating valve used for testing screw pumps on a screw pump performance test bench. [0003] Background technique: [0004] At this stage, the screw pumps used in oil production in my country have reached thousands of meters underground. In actual production, it is necessary to use the screw pump performance test bench to test the performance of the screw pump. During the test, it is necessary to install a pressure regulating valve at the outlet of the screw pump for pressure simulation. However, the technical problems encountered at present are: the pressure adjustment range and flow adjustment range that the existing pressure regulating valve can meet are relatively small, and the relationship between the stroke and pressure of the pressure regulating valve is not linear. The range of change with the stroke is very large. In the case of a large opening, the change of the pressure with the stro...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16K3/26F16K3/314F16K27/04F16K31/12F16K47/02
CPCF16K3/265F16K3/314F16K27/041F16K31/12F16K47/023
Inventor 宋玉杰叶卫东李大奇祖海英陈静一郝重甲李博文
Owner NORTHEAST GASOLINEEUM UNIV
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