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Double-valve-core double-sealing-surface adjusting valve

A double seal, double valve core technology, applied in valve details, lift valve, valve device and other directions, can solve the problems of high medium flow rate, shorten the service life of the regulating valve, large pressure difference, etc., to improve the service life and prevent the valve from sealing. The effect of failure and damage reduction

Active Publication Date: 2016-12-14
HEFEI GENERAL MACHINERY RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] In the dry pulverized coal pressurized gasification process, a regulating valve is needed to intermittently adjust the pressure of the equipment. Due to the large pressure difference, the medium flow rate is high; medium, the strong erosion of the internal components of the control valve greatly shortens the service life of the control valve

Method used

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  • Double-valve-core double-sealing-surface adjusting valve
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  • Double-valve-core double-sealing-surface adjusting valve

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Embodiment Construction

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

[0030] Such as Figure 1a , 1b , 2a, and 2b, a regulating valve includes a cavity surrounded by a valve body 1 and a valve cover 2. The valve body 1 has a valve inlet 12 and a valve outlet 13 communicating with the cavity. A valve core 3 and a valve seat 9 are provided. The valve core 3 is axially movable and arranged in the cavity, and forms an opening and closing action with the valve seat 9 to control the gap between the valve inlet 12 and the valve outlet 13. The valve core 3 is connected with the valve core driving unit 6 outside the cavity through the valve stem 5 set through the valve cover 2, such as Figure 3a , 3b , 4a, 4b, the spool 3 is composed of the main spool 3a and the auxiliary spool 3b, and the valve seat 9 is provided with a first seal that cooperates with the main spool 3a and the auxiliary spool 3b respectively. surface and the second sealing...

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Abstract

The invention relates to a double-valve-core double-sealing-surface adjusting valve, and in particular to an adjusting valve. The double-valve-core double-sealing-surface adjusting valve comprises a valve body and a cavity, wherein the cavity is formed by encircling of the valve cover; a valve inlet and a vale outlet communicated with the cavity are formed in the valve body; a valve core and a valve base are arranged inside the cavity; the valve core consists of a main valve core and a secondary valve core; a first sealing surface and a second sealing surface matched with the main valve core and the secondary valve core are respectively arranged on the valve base; the main valve core and the secondary valve core are in adjustable fixed connection; when the relative position between the main valve core and the secondary valve core is adjusted, the secondary valve core can be separated from the second sealing surface when the main valve core is clung to the first sealing surface, or the main valve core is separated from the first sealing surface when the secondary valve core is clung to the second sealing surface. Due to adoption of double valve cores and double sealing surfaces, sealing can be achieved by using a secondary sealing pair if a main sealing pair is invalid, and the service life of the valve is effectively prolonged.

Description

technical field [0001] The invention relates to a regulating valve with double spools and double sealing surfaces, more specifically a valve that can be used in high-pressure differential gas and solid two-phase flow media to regulate the pressure of the system. Background technique [0002] In the dry pulverized coal pressurized gasification process, a regulating valve is needed to intermittently adjust the pressure of the equipment. Due to the large pressure difference, the medium flow rate is high; Medium, the strong scouring of the internal components of the control valve greatly shortens the service life of the control valve. Contents of the invention [0003] The present invention is to avoid the shortcomings of the above-mentioned prior art, and provides a double-spool double-sealing surface regulating valve, which is especially suitable for pressure regulation in high-pressure differential and gas-solid two-phase flow media. On the basis of regulating performance,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16K1/36F16K1/42F16K47/04F16K1/32F16K1/46
CPCF16K1/32F16K1/36F16K1/42F16K1/465F16K47/04
Inventor 明友王渭陈凤官郝伟沙郭怀舟吴怀昆高红彪李妍冯玉林张建斌
Owner HEFEI GENERAL MACHINERY RES INST
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