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Gas fuel valve

A technology for gas valves and air pipes, applied in safety valves, balance valves, valve devices, etc., which can solve problems such as durability, aging of electronic circuits, and ignition of gas, and achieve long service life, long-term reliable operation, and good stability Effect

Inactive Publication Date: 2007-01-03
张科辉
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the electronic switch is sensitive, on the one hand, it will inevitably produce a certain electromagnetic induction during operation, which will cause the danger of gas being ignited; on the other hand, the electronic switch is relatively fragile, and the internal electronic circuit is easy to age and is not durable
Therefore with regard to existing gas valve, its security still needs to be further improved

Method used

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  • Gas fuel valve
  • Gas fuel valve

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] refer to figure 1 , a gas valve, including an inlet pipe 1, a pressure reducing valve pipe 2 and an air outlet control seat. The inlet pipe 1 is covered with a coupling nut 3 for connecting the gas cylinder, and the inner thread of the pressure reducing valve pipe 2 is provided with an air inlet nozzle 4 . The outlet pressure control seat includes a loam cake 5 and a base 6, and there is an elastic seat between the loam cake 5 and the pedestal 6. The elastic seat is composed of an upper steel sheet 7 and a lower sealing rubber sheet 8, and a connecting rod 9 passes through it. Through the steel sheet 7 and the sealing rubber sheet 8, the head of the connecting rod 9 is provided with threads, and the head of the connecting rod 9 cooperates with a nut 10, thereby connecting the steel sheet 7 and the rubber sealing sheet 8 together. The sealing rubber sheet 8 is sandwiched between the upper cover 5 and the base 6 of the outlet air control seat.

[0017] Below the sealing...

Embodiment 2

[0024] A valve for isolating the lumen of the temporary trachea is slidably inserted on the tube wall of the temporary trachea, and the valve is airtight with the tube wall of the temporary trachea. The rest of the structure and implementation are the same as in Embodiment 1.

[0025] The difference between the present embodiment and the first embodiment is that the on-off switch of the temporary air pipe is different. In the first embodiment, the form of a valve core is adopted, but in the present embodiment, it is in the form of a valve.

Embodiment 3

[0027] Both the tail of the valve stem and the connecting rod are provided with tooth lines, and the valve stem and the connecting rod are connected by a gear. The rest of the structures and implementations are the same as in Embodiment 2.

[0028] The difference between this embodiment and the second embodiment is that the structure of the linkage device used to convert the up and down movement of the connecting rod into the forward and backward movement of the valve stem is different. form.

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Abstract

A gas valve includes a gas inlet tube, a pressure-relief valve tube and a gassing pressure control seat with a top cover and a base divided into a spring cavity with a pressure spring and a gassing cavity with a gassing tube via an elastic seat. It also includes a temporary gas tube for connecting the gas inlet tube and the gassing cavity, in which is disposed an on-off switch. In the pressure-relief valve tube are disposed a valve port and a spool, at the valve port is set a sealing and the spool includes a head part and a valve stem. The head part of the spool is fitted with the seal ring of the valve port on the elastic seat is disposed a link, which is connected with the valve stem.

Description

(1) Technical field [0001] The invention relates to a gas valve. (2) Background technology [0002] Due to the particularity of the application occasion, the gas valve must have high safety performance. When there is an abnormal situation of gas leakage or large gas output, the gas valve should be automatically closed. [0003] At present, the automatic closing function of the gas valve when the gas leaks or the gas output is abnormal is generally controlled by an electronic switch. Although the electronic switch is sensitive, on the one hand, it will inevitably produce a certain electromagnetic induction during operation, which will cause the danger of gas being ignited; on the other hand, the electronic switch is relatively fragile, and the internal electronic circuits are prone to aging and are not durable. Therefore with regard to existing gas valve, its safety still needs to be further improved. (3) Contents of the invention [0004] In order to overcome the defect ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16K99/00F16K17/04F16K17/22
CPCG05D16/0688
Inventor 张科辉
Owner 张科辉