JPH01158300A - Valve for high pressure gas container - Google Patents

Abstract

PURPOSE:To prevent falling over of a high pressure gas container when an external consumer piping is removed with a stop valve being opened, by arranging a pressure regulator for regulating gas pressure below a predetermined level between an ejection port and the stop valve. CONSTITUTION:A pressure regulator 12 for regulating pressure of gas discharged through an ejection port 6 below a predetermined level is arranged between the ejection port 6 in an ejection path 7 and a stop valve 8. When an external consumer piping 5 is removed with the stop valve 8 being opened, gas is ejected from the high pressure gas container 1 through the ejection path 7 and the ejection port 6 to the outside. Since the pressure of gas flowing out through the ejection port 6 to the outside is limited to a predetermined level by means of the pressure regulator 12, and hence reaction of against ejection pressure is limited low, the high pressure gas container 1 is prevented from falling over.

Description

Detailed Description of the Invention <Industrial Application Field> The present invention relates to a high-pressure gas container valve that is attached to a high-pressure gas container that stores carbon dioxide gas mixed into carbonated drinking water, etc., and particularly relates to a stop valve. This invention relates to a high-pressure gas container valve that can prevent the high-pressure gas container from tipping over when an external consumption pipe is removed with the valve open.

<Prior Art> In general, a high-pressure gas container valve includes a body 3 attached to the mouth 2 of the high-pressure gas container 1, as shown in FIG. an inlet/outlet 4, a spout 6 communicating with an external consumption pipe 5, and a spout passage 7 formed in the body 3 extending from the inlet/outlet 4 to the spout 6.
A valve 8 for opening and closing the spouting passage 7 is provided in the middle of the spouting passage 7. Further, the external consumption pipe 5 is provided with a pressure regulator (governor) 9 near the high-pressure gas container valve 3 for controlling the supply gas pressure to a certain level or less, and a spout valve 11 is provided on the spout 10 at the terminal.

Normally, the stop valve 8 is opened after the external consumption pipe 5 is connected to the high pressure gas container valve 3, and when the user opens the spout valve as necessary, the pressure is regulated to a predetermined pressure or less by the pressure regulator 9. Gas is poured out. The gas pressure in the high-pressure gas container is, for example, 50 to 150 kg/a.
When it falls below g/cffl, it is considered used and replaced with another high-pressure gas container 1 sufficiently filled with gas. When replacing the high-pressure gas container 1, the instruction is to close the stop valve 8 and then disconnect the external consumption pipe 5.

(Problems to be Solved by the Invention) However, since such high-pressure gas containers are handled by users or their employees who are inexperienced in handling high-pressure gas, they may mistake the stop valve for being closed, or The external consumption piping 5 may be removed with the stop valve 8 open due to disregarding such instructions or not knowing that there are matters that require a pouring window for such handling. .In most cases, the internal pressure of a used high-pressure gas container at the time of replacement is 50k as mentioned above.
g/cj, and when the external consumption pipe 5 is removed with the stop valve 8 open, the high pressure gas container 1 is
may fall and injure people or property around you.

The present invention has been made in consideration of the above circumstances, and provides a high-pressure gas container valve that can prevent a high-pressure gas container from tipping over when external consumption piping is removed with the stop valve open. The purpose is to

Means for Solving the Problems> In order to achieve the above object, the high-pressure gas container valve according to the present invention has the following features, for example, as shown in FIGS.
As shown in FIG. 6, the body 3 is attached to the mouth 2 of the high-pressure gas container 1, and the high-pressure gas container 1 is attached to the body 3.
An inlet/outlet 4 opened inward, a spout 6 communicating with external consumption piping 5, a spout passage 7 formed in the body 3 extending from the spout 4 to the spout 6, and a spout in the middle of the spout passage 7. In a high-pressure gas container valve provided with a stop valve 8 that opens and closes the outlet passage 7, the pressure of the gas released from the outlet 6 is regulated to a predetermined pressure or less between the outlet 6 of the outlet passage 7 and the stop valve 8. It is characterized in that a pressure regulating device 12 is provided.

<Function> In the above configuration, if the external consumption pipe 5 is removed with the stop valve 8 open, the gas in the high-pressure gas container 1 will be ejected to the outside from the spout 6 via the spout passage 7; 6
The pressure of the gas flowing out to the outside is limited by the pressure regulator 12 to a predetermined value, for example, 5 kg/C+a or less, and the reaction force of the ejection pressure is limited to a small value, thereby preventing the high-pressure gas container 1 from falling. Become.

<Effects of the Invention> As described above, according to the present invention, the pressure regulating device provided between the stop valve and the spout is configured to limit the gas pressure ejected from the spout to a certain value or less. Therefore, by setting the pressure of the gas ejected from the spout to a low level using a pressure regulator, it is possible to prevent the high-pressure gas container from tipping over due to the reaction of the gas ejected from the spout. It can prevent you from getting hurt.

<Example> A high-pressure gas container valve for a high-pressure carbon dioxide gas container according to an example of the present invention will be described below with reference to FIGS. 1 to 3.

A mounting portion 13 that is screwed onto the mouth 2 of the high-pressure gas container 1 is formed at the lower part of the body 3 that is screwed onto the mouth 2 of the high-pressure gas container 1. An entrance/exit 4 communicating with the inside is opened. Further, a joint portion 14 for connecting an external consumption pipe 5 is protruded from the left side portion of the body 3, and a spout 6 that communicates with the external consumption pipe is opened at the left end face of the joint portion 14. A pouring passage 7 is formed inside the body 3 and continues from the spout 4 to the spout 6, and a filling check valve 15, a stop valve 8, and a filling check valve 15 are provided in the middle of the pouring passage 7.
A pressure regulating device 12 is provided.

The filling check valve 15 is a check valve chamber 1 formed in the body 3.
6, the check valve seat 17, the check valve member 18, and the valve closing spring 1
The check valve chamber 16 is formed in a cylindrical shape with its axis oriented in the left-right direction, and a check valve seat 19 is fitted and fixed to the left end thereof. The right side of the check valve hole 20 that passes through the center of the check valve seat 19 in the left-right direction is connected to a filling circuit connection part 21 that connects an external gas filling circuit (not shown). The right end of the check valve member 18 slidably inserted into the check valve chamber 16 enters and exits the check valve hole 20, and when the check valve member 18 enters the check valve hole 20, the check valve member 18 is slidably inserted into the check valve chamber 16. The check valve hole 20 is airtightly closed by the valve member 18, and when the check valve member 18 exits from the check valve hole 20, the filling circuit connection portion 21 connects to the spouting path through the check valve hole 20. The check valve chamber 16 is connected to a check valve chamber 16 forming a part of the valve 7. The valve closing spring 19 is composed of a compression coil spring inserted between the left end surface of the check valve chamber 16 and the check valve member 18, and is configured to prevent the difference between the internal pressure of the filling circuit connection part 21 and the internal pressure of the check valve chamber 16. When the pressure is below a predetermined value, the pressure difference is overcome and the first
As shown in the figure, the check valve member 18 is moved to the valve closing position where it enters the check valve hole 20, and when the pressure difference therebetween exceeds a predetermined value, it succumbs to the pressure difference and is compressed, and the check valve member 18 is caused to exit from the check valve hole 20 by the gas pressure filled. In addition, a portion of the outer circumferential surface of the check valve member 18 that does not enter or exit the check valve hole 20 is formed in the shape of a spline shaft inscribed in the circumferential surface of the check valve chamber 16, and continues from the inlet/outlet 4 side to the spout 6 side. The outlet passage 7 is not interrupted by the check valve member 18.

The stop valve 8 has a stop valve chamber 2 as shown in FIG.
2, a stop valve member 23, an operating shaft 24, and an operating lever 25. The stop valve chamber 22 is formed between the body 3 and the gland nut 22 by recessing the lower end surface of the gland nut 26 screwed onto the rear upper part of the body 3 upward into a cylindrical shape.
is screwed into the inside so that it can be screwed forward and backward in the vertical direction.

The operating shaft 24 extends from the upper surface of the stop valve member 23 through the gland 26 and protrudes to the outside, and the operating lever 25 connected to the upper end of the operating shaft 24 is connected to the operating shaft as shown by the solid line in FIG. When the stop valve member 23 is placed in a closed position diagonally to the left front side with the stop valve member 23 in the center, the stop valve member 23 comes into close contact with the bottom surface of the stop valve chamber 22 and blocks the spouting path 7. Further, the operating lever 25 is swung counterclockwise from the valve-closing position by about 120° to the valve-opening position, which is diagonally to the front right of the operating shaft 24 as shown by the imaginary line in FIG. When the stop valve member 23 is opened, the stop valve member 23 is separated from the bottom surface of the stop valve chamber 22, and the spout passage 7 is fully opened.

If the operating angle of the operating lever 25 is made smaller than one rotation in this way, it is possible to determine whether or not the stop valve 8 is closed just by looking at the position of the operating lever 25. It is possible to prevent the external consumption piping 5 from being removed due to the mistaken belief that the external consumption piping 5 is closed.

In this embodiment, as shown in FIG.
In order to prevent misjudgment of the position, an open mark 27 indicating the open position of the operating lever 25 and a close mark 28 indicating the closed position of the operating lever 25 are formed on the top surface of the body 3 by a method such as overlaying or engraving. .

Now, the pressure regulating device 12 includes a pressure regulating valve chamber 29, a pressure regulating valve member 30, a pressure regulating valve seat 31, a pressure regulating operation chamber 32, a pressure regulating operation piston 33, and a pressure setting spring 34. .

The pressure regulation operation chamber 32 and the pressure regulation valve chamber 29 are arranged coaxially side by side on the left and right, and have an insertion hole 35 formed along the common axis.
communicated by. The right end of the pressure regulating valve chamber 29 is the body
It is closed by a gland nut 36 screwed onto the right side of the valve 3, and a pressure regulating valve seat 31 made of, for example, synthetic resin or rubber is provided on the left end surface of the gland nut 36. The pressure regulating valve member 30 is inserted into the insertion hole 35 airtightly and movably back and forth, and is connected to a pressure regulating operation piston 33 inserted into the pressure regulating operation chamber 32 so as to be slidable forward and backward. Pressure regulation operation room 32
The pressure regulating operation piston 33 is operated by the pressure regulating operation piston 33.
It is divided into a pressure setting chamber 37 on the right side of the pressure regulating operation piston 33 and a pressure receiving chamber 38 on the left side of the pressure regulating operation piston 33. And the pressure regulating valve member 30
and the pressure regulating operation piston 33 has a passage 3 passing therethrough.
9 is formed. The pressure setting chamber 37 is communicated with the outside of the body 3 by an atmospheric communication passage 40 shown in FIG. A setting spring 34 is housed. This pressure setting spring 34 moves the pressure regulating operation piston 33 toward the pressure receiving chamber 38 to separate the pressure regulating valve member 30 from the pressure regulating valve seat 31 when the internal pressure of the pressure receiving chamber 38 is, for example, 5 kg/cTA or less. 29
is communicated with the pressure receiving chamber 38 via the passage 39, and the pressure receiving chamber 38
When the internal pressure exceeds 5 kg/ct, the pressure receiving chamber 38
The pressure regulating operation piston 33 is moved to the pressure setting chamber 37 by succumbing to the internal pressure of
By moving the pressure regulating valve member 30 to the side and bringing the pressure regulating valve member 30 into close contact with the pressure regulating valve seat 31, communication between the passage 39 and the pressure regulating valve chamber 29 is cut off. The pressure receiving chamber 38 is communicated with the spout 6 .

The configuration of the joint section 14 is not particularly limited as long as it can be connected to the external consumption piping 5, but here, the user can easily and quickly connect the external consumption piping 5. The joint portion 14 is configured as a so-called quick joint that can be connected to or disconnected from the external consumption piping 5 with a one-touch operation. Also,
The portion of the quick joint on the side of the external consumption pipe 5 is desirably configured as a self-sealing joint so that when the joint portion 14 and the external consumption pipe 5 are separated, foreign matter such as dust can be prevented from entering from the outside.

In addition, if necessary, a check valve or valve for preventing foreign matter from entering into the pressure receiving chamber 38 may be installed in order to prevent foreign matter such as dust from entering the high pressure gas container valve from the outside when the stop valve 8 is closed. 43 are provided. This check valve 43 includes a check valve seat 44 formed around the left end of the passage 39 of the pressure regulating operation piston 33, and a check valve member 45 inserted into the pressure receiving chamber 38 so as to come into contact with and separate from the check valve seat 44. , the left end surface of the pressure receiving chamber 38 and the check valve member 4
5, and when the internal pressure of the passage 39 falls below a predetermined value, such as when the stop valve 8 is closed, the valve closing spring 46 closes the check valve member 45 as a check valve. It is configured to be brought into close contact with the seat 44 to block the spouting path 7.

Furthermore, the check valve chamber 16 of the filling check valve 15 is connected to a primary side safety valve 47 provided at the front lower part of the body 3, and the pressure receiving chamber 38 of the pressure regulating device 12 is connected to a secondary side safety valve 47 provided at the front upper part of the body 3. It is connected to the side safety valve 48.

In the above configuration, when the external consumption pipe 5 is removed with the stop valve 8 open, the check valve 15 is designed not to block the spouting path 7, so that the gas in the container 1 flows through the spouting path 7. Afterwards, it will gush out to the outside. however,
When the gas pressure ejected to the outside, that is, the internal pressure of the pressure receiving chamber 38 exceeds 5 kg/-, the pressure setting spring 34 of the pressure regulating device 12 succumbs to the internal pressure of the pressure receiving chamber 38, and the pressure regulating operation piston 33
is moved to the pressure setting chamber 37 side, the pressure regulating valve member 30 is brought into close contact with the pressure regulating valve seat 31, and the passage 39 and the pressure regulating valve chamber 29 are cut off, so that the pouring passage 7 is blocked by the pressure regulating device 12. Thus, the gas pressure ejected from the spout 6 is 5 kg/c.
o1 or less, the reaction force against the gas pressure of the gas ejected from the spout 6 is also limited to a small value, and it is possible to prevent the high-pressure gas container l from tipping over due to this reaction force.

In another embodiment of the present invention, the pressure regulating device 12 accommodates a set pressure regulating spring 41 in a pressure receiving chamber 38, and the left end of the pressure receiving chamber 38 is screwed onto the left side of the body 3, as shown in FIG. The pressure of the set pressure adjusting spring 41 can be adjusted using the adjusting bolt 49. In this case, the adjustment bolt 49 is screwed forward and backward through a pressure adjustment handle 50 fixed to its left end. Further, in this case, the joint portion 14 and the spout 6 are provided on the front side or the rear side of the body 3.

The rest of the structure of this embodiment is the same as that of the above embodiment, and the gas pressure ejected from the spout 6 is adjusted by operating the pressure adjustment handle 50 to adjust the pressure of the set pressure adjustment spring 41. For example, except that it can be adjusted within the range of 1 kg/- to 5 kg/ad, it operates in the same manner as the above-mentioned embodiment, and the same effects can be obtained, so a description thereof will be omitted.

In another embodiment of the present invention, the pressure regulating device 12 has a pressure regulating valve seat 31 formed around the end of the insertion hole 35 on the pressure regulating valve chamber 29 side, as shown in FIG. The pressure regulating valve member 30 provided in the pressure regulating operation chamber 3 is biased by a valve closing spring 51 to a closed position where the pressure regulating valve member 30 is in close contact with the pressure regulating valve seat 31.
A pressure setting chamber 37 is defined on the left side of the pressure regulation operation piston 33 in the pressure regulation operation chamber 32, and a pressure receiving chamber 38 is defined on the right side of the pressure regulation operation piston 33 in the pressure regulation operation chamber 32. The pressure setting spring 34, which is a compression coil spring that communicates with the outside of the body 3 and urges the pressure regulating piston 33 toward the pressure receiving chamber 38, is housed inside the body 3, and the pressure regulating piston 33 and the pressure regulating valve member 30 A stem 52 connecting the two is formed to have a smaller diameter than the insertion hole 35, and a passage 39 is formed around the stem 52.

In this case, the joint part 14 and the spout 6 are provided on the front side or the rear side of the body 3.

The rest of the structure of this embodiment is the same as that of the above embodiment, and operates in the same manner as the above embodiment.
Since similar effects can be obtained, these descriptions will be omitted.

In still another embodiment of the present invention, as shown in FIG. 6, the pressure regulating device 12 includes a diaphragm 53 in place of the pressure regulating operation piston 33 of the embodiment shown in FIG.
The pressure of No. 4 can be adjusted by screwing the pressure adjustment handle 50 forward and backward.

Further, the joint portion 14 and the spout 6 are connected in the middle of the passage 39 and are provided on the front side or the rear side of the body 3.

The rest of the structure is the same as that of the embodiment shown in FIG.
For example, by adjusting the pressure of 1 kg/a (~
Except that it can be adjusted within a range of 5 kg/cn, it operates in the same manner as the embodiment shown in FIG. 6, and the same effects can be obtained, so a description thereof will be omitted.

In another embodiment of the present invention shown in FIG. 7, the pressure regulating valve chamber 29 and the pressure receiving chamber 38 of the pressure regulating device 12 are integrally formed, and the bottle 55 is located in the pressure regulating valve chamber/pressure receiving chamber 54. A swinging pressure regulating valve member 30 is provided. The pressure setting chamber 37 of the pressure regulating operation chamber 32 and the pressure regulating valve chamber/pressure receiving chamber 54 are connected to the diaphragm 53.
The pressure regulating valve member 30 is interlocked and connected to the center of the diaphragm 53 via a lever 56. The pressure regulating valve seat 31 is formed at the periphery of the opening to the pressure regulating valve chamber/pressure receiving chamber 54 in the portion of the outlet path 7 that communicates with the pressure regulating valve chamber/pressure receiving chamber 54 from the stop valve 8 side. Other configurations are the 6th
The structure is similar to the embodiment shown in the figure, and the explanation thereof will be omitted since it operates in the same manner as the embodiment shown in FIG. 6, and the same effects can be obtained.

[Brief explanation of the drawing]

FIG. 1 is a longitudinal sectional front view of a high-pressure gas container valve according to an embodiment of the present invention, FIG. 2 is a longitudinal sectional side view taken along line nn of FIG. 1, FIG. 3 is a plan view, and FIG. FIG. 5 is a longitudinal sectional front view of a pressure regulating device according to another embodiment of the present invention, and FIG. 6 is a longitudinal sectional front view of a pressure regulating device according to yet another embodiment of the present invention. FIG. 7 is a vertical sectional front view of a pressure regulating device according to another embodiment of the present invention, and FIG. 8 is a vertical sectional front view of a conventional high pressure gas container valve. 1...High pressure gas container, 2...Port, 3...Body,
4... Inlet/outlet, 5... External consumption piping, 6... Outlet, 7... Outlet path, 8... Stop valve, 12...
Pressure regulating device.

Claims (1)

[Claims] 1. The body 3 has a body 3 attached to the mouth 2 of the high-pressure gas container 1, and the body 3 has an inlet/outlet 4 opened into the high-pressure gas container 1, an outlet 6 communicating with an external consumption pipe 5, and an inlet/outlet 6 for pouring from the inlet/outlet 4. In a high-pressure gas container valve provided with a spouting passage 7 formed in the body 3 across the outlet 6 and a stop valve 8 for opening and closing the spouting passage 7 in the middle of the spouting passage 7, the spout 6 of the spouting passage 7 and the stop valve 8, a pressure regulating device 12 that regulates the gas pressure released from the spout 6 to a predetermined pressure or less.
A high-pressure gas container valve characterized by being provided with