Elastic forced sealing conical cock type pulverized coal feeding reversing valve

A technology of forced sealing and reversing valve, which is applied to shaft sealing, cock including cut-off device, valve details, etc., can solve the problem that the sealing effect is difficult to meet the ideal requirements, etc., and achieves simple and compact overall structure, high reliability, processing and assembly. less difficult effect

Active Publication Date: 2019-11-19
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 the sealing effect is always difficult to meet the ideal requirements

Method used

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  • Elastic forced sealing conical cock type pulverized coal feeding reversing valve
  • Elastic forced sealing conical cock type pulverized coal feeding reversing valve
  • Elastic forced sealing conical cock type pulverized coal feeding reversing valve

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Embodiment Construction

[0039] For ease of understanding, the specific structure and working method of the present invention are further described as follows:

[0040] The concrete implementation structure of the present invention can refer to Figure 1-3 As shown, it includes a gland 80, a compression spring 40, a valve cover 20, a cock 30, a valve body 10, 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.

[0041] 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, in particular to an elastic forced sealing conical cock type pulverized coal feeding reversing valve. The reversing valve comprises a valve body, a valve cover and a cock; an upper table face of the cock is coaxially provided with an upper valve stem convexly, a lower table face of the cock is coaxially provided with a lower valve stem convexly, and the lower valve stem is matched with a reserved hole in the bottom surface of a valve cavity of the valve body and achieves axial return action through a compression spring coaxially arrangedwith the reserved hole; and a pneumatic component for pressing the cock, a bracket and a pneumatic actuator for controlling the cock to rotate are sequentially arranged at the position, on the upper surface of the valve cover from bottom to top in the axial direction of the upper valve rod. The elastic forced sealing conical cock type pulverized coal feeding reversing valve can simultaneously ensure the high valve way sealing performance under long-term operating conditions while maintaining the fast reversing function and the high commutation reliability, so that the safety integrity level ofa system is greatly improved.

Description

technical field [0001] The invention relates to the technical field of valves, in particular to an elastic 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 5 microns to 90 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 gasifier b...

Claims

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Application Information

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IPC IPC(8): F16K11/083F16K27/06F16K41/04F16K5/16
CPCF16K5/0278F16K5/0285F16K11/0833F16K27/062
Inventor 王渭陈凤官明友余宏兵耿圣陶叶晓节郝伟沙王勤
Owner HEFEI GENERAL MACHINERY RES INST
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