Directional valve with self-compensating directional cock

A self-compensating, reversing valve technology, applied in the field of reversing valves, can solve the problems of unguaranteed sealing performance and wear of sealing materials, and achieve the effect of maintaining smoothness, good stress state, and improving long-term life

Active Publication Date: 2021-11-23
HEFEI GENERAL MACHINERY RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, with the reversing action of the reversing valve, the sealing material will gradually wear out, and the sealing performance under long-term operating conditions cannot be guaranteed.

Method used

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  • Directional valve with self-compensating directional cock
  • Directional valve with self-compensating directional cock
  • Directional valve with self-compensating directional cock

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] The channel barrel is divided into only two barrel sections along the fluid flow direction, namely the first barrel section and the second barrel section. The first elastic member 44 is a metal bellows, located between the first barrel section and the second barrel section, and the number of the first elastic member 44 is equal to the number of flow channels. The first elastic member 44 is respectively welded to the first cylinder section and the second cylinder section on both sides, and ensures that the corresponding flow channels are aligned and connected.

Embodiment 2

[0049] Each flow channel in the first barrel section 54 and the second barrel section 59 is connected by socketing, and the socketing forms a socket section, and first sealing ring grooves 56 are arranged at two opposite socket surfaces of the socket section. , a first sealing ring 560 is disposed in the first sealing ring groove 56 .

[0050] Socketing methods include the following methods:

[0051] The first is: if Figure 4 As shown, on the side of the first cylinder section 54 and the second cylinder section 59 close to the first elastic member 44, each flow channel is provided with an annular groove 58 or a protrusion 57, and the parallel flow of the protrusion 57 is set. An annular groove 58 is arranged on the adjacent flow channel of the channel, and it is ensured that any flow channel in the first barrel section 54 and the second barrel section 59 is matched and sleeved in the annular groove 58 by the protrusion 57 to form a sleeve section. Specifically, in this solu...

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Abstract

The invention relates to the field of valves, in particular to a reversing valve with a self-compensating reversing cock. The flow channel barrel is symmetrical about the central axis of the through hole, and the flow channel barrel is provided with several parallel flow channels, and the flow channel barrel is divided into several barrel sections along the fluid flow direction, and there is at least a gap between two barrel sections. The first elastic part is always in a compressed state. During the movement of the two cylinder sections equipped with the first elastic part to both sides, the respective flow channels composed of each cylinder section are always in a continuous state, and the connection is Sealed state. The advantage of this invention is that: in the present invention, the two ends of the flow channel tube will always be against the surface in contact with the first elastic part provided by the channel tube, and the force state is symmetrical and even. When the sealing ring set on the contact surface is worn out After the end, it can still keep the sealed state.

Description

technical field [0001] The invention relates to the field of valves, in particular to a reversing valve with a self-compensating reversing cock. Background technique [0002] In the dry pulverized coal gasification process, the pulverized coal feed reversing valve is installed on the pulverized coal delivery pipeline of the gasification device, and is mainly used for switching the airborne pulverized coal medium flow between the coal feeding pipeline and the circulation pipeline. What it transports is the pulverized coal medium with high-pressure gas as the carrier. The gasification process requires that the reversing time of the pulverized coal feed reversing valve be less than 3s, and the reversing is stable and reliable. Since the pulverized coal feed reversing valve is equipped with cut-off ball valves on the pipelines behind the valve, the requirements for its own sealing are not high. However, if the sealing performance of the pulverized coal feed reversing valve can...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16K11/085F16K27/06
CPCF16K11/0856F16K27/065
Inventor 陈凤官王渭明友王勤耿圣陶余宏兵叶晓节高红彪
Owner HEFEI GENERAL MACHINERY RES INST
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