JP2584461Y2 - Gas tap - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a gas stopper, particularly a gas stopper suitable for use with propane gas.

[0002]

2. Description of the Related Art In general, when using propane gas, it is required to confirm that a gas pressure has reached a predetermined pressure when using a gas appliance. Conventionally, such a gas pressure test is performed by, for example, arranging a three-way branch pipe between a gas stopper installed in a gas cylinder and a gas appliance, and introducing a gas into a pressure measuring instrument through the three-way branch pipe. It was done.

However, when a three-way branch pipe is used, there is a problem that it takes time to attach and detach the pipe. Therefore, various gas stoppers capable of inspecting the gas pressure have been proposed.

For example, in the gas plug described in Japanese Utility Model Laid-Open Publication No. 1-94674, an inspection hole for connecting a pressure measuring device is formed in the plug body, and when the plug is turned to a half-open position, the inspection hole is turned into a plug. The gas flowing in from the inflow hole is supplied to the pressure measuring device through the inspection hole from the inflow hole.

The gas plug described in Japanese Utility Model Laid-Open No. 4-88775 has a plug body formed with an inspection hole for connecting a pressure measuring device and a plug body formed with a communication hole communicating with a through hole. The communication hole does not communicate with the inspection hole during normal use, but when the plug is rotated by 180 ° with respect to the normal use, the communication hole communicates with the inspection hole, and the through hole, the communication hole and Gas is supplied to the pressure measuring instrument through the inspection hole.

[0006]

In the case of the former publication, when the pressure is measured, the flow area of the gas plug is reduced because the plug is located at the half-open position. For this reason, there is a problem that the flow rate of the gas necessary for burning the gas appliance in a normal state cannot be obtained.

On the other hand, in the case of the latter publication, the communication hole and the inspection hole communicate with each other at the open position, so that the required gas flow rate can be obtained. The gas stopper must be disassembled, and must be reassembled after disassembly. Therefore, there is a problem that it takes time to measure the gas pressure.

The present invention has been made in consideration of the above circumstances, and it is necessary to obtain a sufficient gas flow rate when measuring a gas pressure in a use state of a gas appliance, and to perform the pressure measurement without disassembling. It is an object of the present invention to provide a gas stopper capable of performing the above.

[0009]

According to a first aspect of the present invention, a plug insertion hole, an inflow hole opened on an inner peripheral surface of one side of the plug insertion hole, and A plug body in which an outflow hole opened on the inner peripheral surface of the other side of the plug insertion hole, an inspection hole formed on the inner peripheral surface of the plug insertion hole between these inflow holes and the outflow hole, and one side of the outer peripheral surface Having a through hole penetrating from the part to the other side part, rotatably inserted into the plug insertion hole,
A gas provided with a plug that can be rotated between an open position that connects the inflow hole and the outflow hole via a through hole and a closed position that blocks the space between the inflow hole and the outflow hole. In the plug, the plug body has one end formed on the inner peripheral surface of the plug insertion hole between the openings of the inflow hole and the inspection hole, and the other end formed with a bypass hole communicating with the inflow hole. On the outer peripheral surface of the plug, the plug extends in the circumferential direction of the plug, and when the bypass hole is half-opened with respect to the through hole by the plug,
A communication groove for communicating the bypass hole with the inspection hole is formed by opposing both ends of the bypass hole and the opening of the inspection hole in the plug insertion hole. In this case, when the opening of the inspection hole on the inner peripheral surface of the plug insertion hole is closed, the inspection hole is arranged so as to face and communicate with one opening of the through hole,
It is desirable that at least one of the plug main body and the plug body be formed with a communication path that allows the outflow hole to communicate with the through hole when closed.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of the present invention will be described with reference to FIGS.
This will be described with reference to FIG. 1 to 7 show an embodiment of the gas plug according to the present invention, FIG. 5 is a longitudinal sectional view thereof, and FIG. 6 is a sectional view taken along line XX of FIG. FIG. 7 is a view taken in the direction of the arrow Y in FIG. As shown in these figures, the gas stopper A includes a stopper body 1 that is long on the left and right. A taper-shaped plug insertion hole 11 extending downward from the upper surface is formed at the center of the plug main body 1.

At one end (right end in FIG. 5) of the plug body 1, an inflow hole 12 extending from the right end surface to the inner peripheral surface of the plug insertion hole 11 is formed. The inflow hole 12 includes a tapered screw hole 12 a formed at the right end opening thereof, and a straight hole portion 12 b extending from the bottom of the tapered screw hole 12 a to the inner peripheral surface of the plug insertion hole 11.
Gas is supplied by screwing a gas pipe (not shown) on the main stopper side into the tapered screw hole 12a.

The other end of the plug body 1 (left end in FIG. 5)
An outflow hole 13 extending from the left end surface to the inner peripheral surface of the plug insertion hole 11 is formed in the hole. A joint 2 having a tapered screw hole 21 is rotatably attached to the outer periphery of the left end of the plug body 1, and a gas pipe of a gas appliance is connected to the tapered screw hole 21. In addition, a tapered screw hole may be formed at the left end opening of the outflow hole 13, and in that case, the joint 2 is not necessary.

A projection 15 is provided on the side surface of the center of the plug body 1.
Are formed. An inspection hole 16 is formed in the protrusion 15. One end of the inspection hole 16 is open on the distal end surface of the protrusion 15, and the other end is open on the inner peripheral surface of the plug insertion hole 11. The opening at the other end of the inspection hole 16 is disposed slightly closer to the inflow hole 12 side than the center between the inflow hole 12 and the outflow hole 13. The set screw 3 is screwed into one end opening of the inspection hole 16, thereby sealing the inspection hole 16. The set screw 3 is attached to the inspection hole 16
It is removed when using, that is, when measuring gas pressure. Then, a gas pipe of a pressure measuring device (not shown) is extrapolated to the protrusion 15.

A plug 4 having a tapered shape corresponding to the plug insertion hole 11 is rotatably inserted into the plug insertion hole 11. The plug 4 communicates the inflow hole 12 with the outflow hole 13.
This is for turning off (opening and closing), and is rotated by the handle 5 via the intermediate member 6 between the open position shown in FIG. 2 and the closed position (position shown in FIG. 3) separated from the open position by approximately 90 °. It has become so.

The plug 4 has a through hole 41 penetrating from one side of the outer peripheral surface to the other side. As shown in FIG. 2, when the stopper 4 is turned to the open position, the openings at both ends of the through holes 41 face the inflow holes 12 and the outflow holes 13 to communicate the holes 12, 13. . When the plug 4 is turned to the closed position, the through hole 41 is separated from the inflow hole 12 and the outflow hole 13, and the openings at both ends are shielded by the inner peripheral surface of the plug insertion hole 11. Therefore, the space between the inflow hole 12 and the outflow hole 13 is blocked by the plug 4.

As shown in FIGS. 3 and 4, the through hole 41 is closed when the inflow hole 12 and the outflow hole 13 are closed by the plug 4, that is, the plug 4 is turned to the closed position. Time,
When the plug 4 is rotated to a position slightly separated from the closed position to the open position in the range where the closed state is maintained (hereinafter, such a position is referred to as a semi-closed position), one end opening is inspected. It communicates with the hole 16.

In the inside of the plug body 1, a bypass hole 17 is provided.
Are formed. This bypass hole 17 is
, One end of which is open to the bottom surface of the tapered screw hole 12 a of the inflow hole 12, and the other end of which is located between the inflow hole 12 and the inspection hole 16. It is open on the inner peripheral surface of the hole 11. The opening of the bypass hole 17 on the inner peripheral surface of the plug insertion hole 11 is
1 (see FIG. 1), and when opened, the through hole 42
(See FIG. 2). Of course,
It may be arranged so as to be blocked from the through hole 42 even in the open position. The bypass hole 17 is shut off from the through-hole 41 when closed and semi-closed.

The bypass hole 17 is arranged so that its axis is slightly above the axis of the inflow hole 12 as shown in FIG. It may be arranged, or may be arranged slightly below. Further, by forming the bypass hole 17, the straight hole 12b of the inflow hole 12 is slightly shifted in a direction away from the inspection hole 16, and is arranged so as to be inscribed in the inner peripheral surface of the through hole 41 at the open position. ing.

A communication groove 42 extending in the circumferential direction is formed on the outer peripheral surface of the plug 4. This communication groove 42 is formed as shown in FIG.
When the stopper 4 is rotated from the open position to the half-open position slightly toward the closed position as shown in FIG.
And the other end is arranged to face the inspection hole 16. Therefore, at the half-open position, the bypass hole 17 and the inspection hole 16 communicate with each other through the communication groove 42.

The plug 4 has a communication hole 43 (communication passage) extending from the outer peripheral surface to the inner peripheral surface of the through hole 41. The opening outside the communication hole 43 is shielded by the inner peripheral surface of the plug insertion hole 11 in the half-open position shown in FIG. 1 and the open position shown in FIG. In the semi-closed position shown in FIG.
Opposes. Therefore, the outflow hole 13 and the inspection hole 16 communicate with each other through the through hole 41 and the communication hole 43 in the closed position and the semi-closed position.

Next, the operation of the gas stopper A having the above configuration will be described. First, during normal use, the set screw 3 is inserted into the inspection hole 16.
And the inspection hole 16 is closed. Then, as shown in FIG. 2, the stopper 4 is turned to the open position. Then, the inflow hole 12 and the outflow hole 13 communicate with each other through the through hole 41,
The gas flowing into the inflow hole 12 is supplied to the gas appliance. When the stopper 4 is turned to the closed position, the inlet 4 and the outlet 13 are shut off by the stopper 4 as shown in FIG. 3, and the supply of gas to the gas appliance is stopped.

When measuring the gas pressure, the set screw 3 is removed from the inspection hole 16, a gas pipe is attached to the projection 15, and a pressure measuring device is connected to the inspection hole 16. And
As shown in FIG. 1, the plug 4 is rotated to the half-open position. Then, the bypass hole 17 and the inspection hole 16 communicate with each other via the communication groove 42. Therefore, the gas pressure can be measured.

Moreover, when this gas stopper A is used,
Gas pressure can be measured accurately. That is, when the communication groove 42 is in the half-open state shown in FIG.
If it is long so as to face b, the inspection hole 16 can be communicated with the inflow hole 12 without forming the bypass hole 17, whereby the gas pressure can be measured. However, when the gas appliance is used, the gas flows in the inflow hole 12, and in the case described above, the vortex is generated at the location indicated by the symbol a in FIG. Is lower than the actual gas pressure. By the way, the actual gas pressure is 20
0mmH contrast is the a ₂ O, measured values in the case of communicated communication groove 42 into the straight hole 12b is 180~190m
mH ₂ O.

In this regard, in the gas stopper A, when the gas stopper A is in the half-open state, the bypass hole 17 is blocked from the through hole 42, and no gas flows inside the bypass hole 17. Therefore, no vortex is generated near the communication location between the bypass hole 17 and the communication groove 42, and the gas pressure does not decrease due to the vortex. Therefore, the gas pressure can be accurately measured. By the way, the actual gas pressure is 200mm
When it is H ₂ O, the value measured by the gas stopper A is 198 mm
H ₂ O or more, and almost no error occurred.

In the gas plug A, since the bypass hole 17 and the inspection hole 16 are communicated by the communication groove 42 extending in the circumferential direction of the plug 4, the plug 4 is moved from the open position to the closed position. The inflow hole 12 is in the half-open position only slightly rotated.
And the inspection hole 16 can be communicated. Therefore, a sufficient amount of gas required for combustion of the gas appliance can be supplied.

Further, in the above half-opened state, the main valve upstream of the gas plug A is closed, the gas appliance is closed, and it is checked whether the gas pressure has dropped before or after a predetermined time has elapsed. It is possible to detect whether or not there is a gas leak before the gas appliance.

Since the bypass hole 17 and the inspection hole 16 communicate with each other at the half-open position, when the plug 4 is rotated from the open position to the closed position during normal use, or when the stopper 4 is rotated in the opposite direction. , The inflow hole 17 and the inspection hole 16 communicate with each other. However, the communication time at this time is very short, and the inspection hole 16 is sealed by the set screw 3 during normal use. Therefore, there is no possibility that gas leaks from the inspection hole 16 during normal use.

In the closed or semi-closed state, the inspection hole 1
6 communicates with the outflow hole 13 through the through hole 41 and the communication hole 43, so that the gas stopper A is closed or semi-closed, the gas appliance is closed, and a decrease in gas pressure before and after a predetermined time elapses. By inspecting whether or not there is, it is possible to detect whether or not there is a gas leak between the gas tap A and the gas appliance.

The present invention is not limited to the above-described embodiment, but can be changed as appropriate without departing from the scope of the invention. For example, in the above-described embodiment, the stopper 4 having a tapered shape is used, but a stopper having a spherical shape may be used. In this case, the plug insertion hole 11 should of course be spherical. Further, although the plug 4 is directly inserted into the plug insertion hole 11, it may be inserted through a sleeve or the like.

In the above-described embodiment, the communication hole 43 is formed as a communication passage. However, as shown by an imaginary line in FIG. 3, the side of the outflow hole 13 on the inspection hole 16 side and the plug insertion hole are formed. A notch 18 is formed at the intersection with the opening 11, or a notch 44 is formed in a portion of the plug 4 located between the through hole 41 and the outflow hole 13 in the closed position, and these notches 18 or 44 are formed. The inspection hole 16 and the outflow hole 13 may communicate with each other via the. Furthermore, these notches 1
Regarding 8, 44, as shown in FIG. 4, the inspection hole 16 and the outflow hole 13 may be communicated only at the semi-closed position. By doing so, the length of the notches 18 and 44 in the circumferential direction can be reduced.

[0031]

As described above, according to the first aspect of the present invention, the gas pressure can be measured while securing a sufficient gas supply amount to the gas appliance. Moreover, the gas pressure can be measured accurately. In addition, since the plug is simply rotated to the half-open position and there is no need to replace the plug, the labor required for the inspection can be greatly reduced. Further, an effect is obtained that it is possible to detect whether or not there is gas leakage between the main plug and the gas appliance.

According to the second aspect of the present invention, it is possible to detect whether or not there is a gas leak between the gas tap and the gas appliance.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view taken along a line XX of FIG. 7 showing a state where a plug is turned to a half-open position.

FIG. 2 is a cross-sectional view similar to FIG. 1 showing a state in which the plug is rotated to an open position.

FIG. 3 is a cross-sectional view similar to FIG. 1 showing a state in which the plug is turned to a closed position.

FIG. 4 is a cross-sectional view similar to FIG. 1, showing a state where the plug is rotated to a half-closed position.

FIG. 5 is a longitudinal sectional side view showing an embodiment of the gas stopper according to the present invention.

FIG. 6 is a sectional view taken along the line XX of FIG. 5;

FIG. 7 is a view as seen in the direction of the arrow Y in FIG. 5;

[Explanation of symbols]

 A Gas plug 1 Plug body 4 Plug body 11 Plug insertion hole 12 Inflow hole 13 Outflow hole 16 Inspection hole 17 Bypass hole 18 Notch (communication passage) 41 Through hole 42 Communication groove 43 Communication hole (communication passage) 44 Notch (communication) aisle)

Claims (2)

(57) [Scope of request for utility model registration] 1. A plug insertion hole, an inflow hole opened on the inner peripheral surface of one side of the plug insertion hole, an outflow hole opened on the inner peripheral surface of the other side of the plug insertion hole, an inflow hole and an outflow hole. A plug main body having an inspection hole formed on the inner peripheral surface of the plug insertion hole between the plug insertion hole and a through hole penetrating from one side to the other side of the outer peripheral surface. A plug body that is inserted so as to be able to rotate between an open position that allows the inflow hole and the outflow hole to communicate with each other through a through hole and a closed position that shuts off the inflow hole and the outflow hole. In the gas plug provided with the above, one end of the plug main body was opened on the inner peripheral surface of the plug insertion hole between the openings of the inflow hole and the inspection hole, and the other end was connected to the inflow hole. A bypass hole is formed, and the outer peripheral surface of the plug extends in the circumferential direction of the plug, and the bypass hole is closed by the plug with respect to the through hole. At the time of the half-opening, a communication groove for communicating the bypass hole and the inspection hole is formed by opposing both ends of the bypass hole and the inspection hole to the respective openings of the plug insertion hole. And gas tap. 2. The gas plug according to claim 1, wherein when the opening of the inspection hole on the inner peripheral surface of the plug insertion hole is closed, the inspection hole faces and communicates with one of the openings of the through hole. A gas stopper, wherein an inspection hole is arranged, and a communication path for communicating the outlet hole and the through hole when closed is formed in at least one of the stopper body and the stopper body.