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Pressure detection safaty device

A safety device and pressure technology, applied in the container discharge method, container filling method, gas/liquid distribution and storage, etc., can solve the problems of poor operability, many assembly processes, and a large number of parts

Inactive Publication Date: 2003-05-14
ASAHI SEISAKUSHO +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For this reason, there is a problem that the plunger b itself and its related parts are large in number, and there are also many assembly processes.
[0003] In addition, when the abnormally increased pressure acts on the plunger b to make the plunger b retreat, a pressure difference occurs on both sides of the sealing portion d that cuts off the inside and outside of the operating chamber, so that only the portion e that restricts the extension of the plunger is operated. Part f and plunger b do not return automatically, so when they are used again, they must be operated to return the pressure in the operating chamber to the normal pressure, and there is a problem of poor operability

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0057] figure 1 , 2 shows a cross-sectional view of a pressure reducer 10 equipped with a pressure detection safety device according to Embodiment 1 of the present invention, that is, a so-called gas pressure regulator. The device body 11 of the present invention is attached with the above-mentioned pressure reducer 10 and is integrally formed therewith. A through hole 12 is formed on the main body 11, and an operation chamber 13 with a gas communication port 25 communicating with the decompression chamber is provided on the front half thereof. In addition, the plunger 16 penetrates from the front end to the rear end of the through hole. In this example, a spring receiving portion 14 is provided at the innermost portion of the operating chamber 13 , and a compression spring 19 provided there exerts a forward force on the plunger 16 .

[0058] The plunger 16 is a shaft-shaped member slidably arranged in the through hole 12 in the axial direction, and extends from one end of ...

Embodiment 2

[0070] image 3 It is the same view as that of Embodiment 1, showing the pressure reducer 10 equipped with the pressure detection safety device of Embodiment 2 of the present invention. In Embodiment 2, a circumferential receiving groove 31 is provided in the middle of the plunger 16, and an inner sealing member 24 is installed, and a compression spring 32 exerts forward elastic force on the plunger from the rear of its outer wall. In this structure, the outer wall of the receiving groove 31 also serves as a pressure-receiving portion on the side of the operating chamber, and it becomes easier to detect the abnormal pressure of the small gas tank as compared with the first embodiment.

[0071] In addition, in the second embodiment, the covering member 22 and the interface member 23 shown in the first embodiment are integrated to form a single head member 30 . Therefore, the outer seat portion 20 is formed on the above-mentioned head member. Thereby, while having the same bas...

Embodiment 3

[0074] Figure 4 It is the same view as that of Embodiment 1, showing the pressure reducer 10 equipped with the pressure detection safety device of Embodiment 3 of the present invention. In Embodiment 3, as in Embodiment 1, a compression spring 19 is provided in the operating chamber 13, but a spring receiving portion 141 is also provided behind the sealing member 24 in the through hole that makes the plunger 16 slide. The compression spring 191 of the receiving portion pushes the plunger 16 forward. That is, in figure 1In the first embodiment shown, the functions of the compression spring 19 are divided into the compression spring 19 for the one-way valve and the compression spring 191 for the shut-off valve. In this way, the one-way valve can be operated more smoothly. And other respects are identical with embodiment 1.

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Abstract

The object of the present invention is to provide a pressure detection safety device for a gas appliance using a small gas cylinder, in which its structure is rationalized by reducing the number of part items. Another object of the present invention is to provide a pressure detection safety device also assembling man-hours, its reuse after actuation, namely its reset is facilitated, and operability is improved. This device is composed such that a stem is integrated with the piston of a check valve and cutoff valve, and the inside and outside of an actuation chamber of a check valve are shut off by making the stem detect the abnormal pressure of the small gas cylinder to retreat.

Description

technical field [0001] The present invention relates to a pressure detection safety device for a gas appliance using a small gas container, in particular to a through-hole that is pushed by the nozzle part of the small gas container and can retreat to the device body by overcoming the thrust of the spring when the small gas container is installed. The plunger in the hole is a pressure detection safety device that cuts off the gas passage when the internal pressure of the small gas container rises abnormally, and the plunger retreats after detecting the pressure. Background technique [0002] When a gas appliance using a small gas container is used for an unexpected period of time, the small gas container may experience abnormally high temperatures, and in some cases may even cause the risk of rupture. In order to prevent this phenomenon, various safety devices have been developed, and Japanese Patent No. 2954528 shows a typical example. In this invention, if Figure 7 As sh...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F17C13/04F17C13/12
Inventor 田中胜司铃木谦尔菅沼良一横山知彦
Owner ASAHI SEISAKUSHO
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