Pneumatic forcedly-sealing tapered plug type powdered coal feeding reversing valve

A technology of forced sealing and reversing valve, applied in valve details, multi-port valve, valve device and other directions, can solve the problem that the sealing effect is difficult to meet the ideal requirements, achieve less difficulty in processing and assembly, ensure high reliability, and facilitate disassembly and assembly maintenance effect

Active Publication Date: 2019-11-15
HEFEI GENERAL MACHINERY RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The above structure is inherently safe for the gasifier, but its sealing effect is always difficult to meet the ideal requirements under long-term operating conditions

Method used

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  • Pneumatic forcedly-sealing tapered plug type powdered coal feeding reversing valve
  • Pneumatic forcedly-sealing tapered plug type powdered coal feeding reversing valve
  • Pneumatic forcedly-sealing tapered plug type powdered coal feeding reversing valve

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Embodiment Construction

[0038] For ease of understanding, the specific structure and working method of the present invention are further described as follows:

[0039] The concrete implementation structure of the present invention can refer to Figure 1-2 As shown, it includes a gland 80, a compression spring 40, a valve body 10, a cock 30, a valve cover 20, a compression ring 72, a sealing ring body 71, a bracket 50 and a pneumatic actuator arranged in sequence from bottom to top along the vertical line. device 60.

[0040] Pneumatic actuator 60 is available in the market. It is an actuator that uses air pressure to drive the opening and closing or regulating valves. It is also called a pneumatic actuator or a pneumatic device, but it is generally called a pneumatic head. The function in the present invention is to drive the cock 30 to rotate at a certain angle according to a predetermined direction, so as to realize the opening and closing function of the valve circuit. In actual operation, it sh...

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Abstract

The invention relates to the technical field of valves, and particularly relates to a pneumatic forcedly-sealing tapered plug type powdered coal feeding reversing valve. The reversing valve comprisesa valve body, a valve cover and a plug; the upper table surface of the plug is convexly and coaxially provided with an upper valve rod, the lower table surface of the plug is convexly and coaxially provided with a lower valve rod, wherein the bottom end face of the lower valve rod and a compression spring in a reserved hole of the valve body form axial direction abutting fit; and a pneumatic assembly, a support and a pneumatic actuator are sequentially arranged on the upper surface of the valve cover from bottom to top in the axial direction of the upper valve rod, wherein the pneumatic assembly is used for downwards pressing the plug, and the pneumatic actuator is used for controlling the plug to rotate. According to the reversing valve, a quick reversing function and high reversing reliability are both combined, and meanwhile high sealing performance of valve ways under long-term running can be synchronously ensured, thus greatly improving safety integrity level of a system.

Description

technical field [0001] The invention relates to the technical field of valves, in particular to a pneumatic forced seal applied to a pulverized coal conveying pipeline of a dry coal pulverized gasification process, and used to realize the switching of airborne pulverized coal medium flow between a coal feeding pipeline and a circulating pipeline Conical plug type pulverized coal feeding reversing valve. Background technique [0002] Pressurized pulverized coal gasification is to convert the difficult-to-process solid raw coal into clean and easy-to-use synthesis gas, that is, CO 2 +H 2 The process is also the process of putting dry coal powder with a particle diameter of not more than 100 microns together with carbon dioxide or nitrogen into the gasifier to complete the pulverized coal gasification process. In most of the existing dry pulverized coal gasification processes, the dry pulverized coal and carbon dioxide or nitrogen are pressurized and transported to the gasifi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16K11/083F16K31/12
CPCF16K11/0836F16K31/12
Inventor 王渭陈凤官明友耿圣陶余宏兵叶晓节郝伟沙王勤
Owner HEFEI GENERAL MACHINERY RES INST
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