JPS6128938Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a container valve equipped with a gas release prevention device that is attached to a container containing LP gas or other high-pressure gas.

Conventional valves for containers containing high-pressure gas simply remove the contents (liquid or gas) inside the container, or
Alternatively, it was intended to be filled with high pressure gas. Therefore, if the joint, regulator, or its connecting piping downstream of the valve outlet breaks due to some external cause such as an earthquake or external shock, the contents will be ejected from the valve part due to the pressure inside the container. There was a drawback. Here, there are various types of high-pressure gas such as flammable gas, combustion-supporting gas, and toxic gas.
External release is extremely dangerous.

In view of such conventional drawbacks, the present invention is designed to prevent the piping part downstream of the valve outlet from breaking due to some external cause.
In addition, it incorporates a gas release prevention device that automatically closes the valve if the container topples during an earthquake or is subject to vibration acceleration exceeding a certain gal and is likely to tip over. The balancer is attached to a holder attached to the lower end of a passage provided in communication with the valve opening of the valve body so as to be tiltable in the left and right directions, and a support rod that moves up and down as the balancer is tilted is arranged in the passage. A check float that opens and closes the second valve port provided at the top of the communication path is attached to the upper end so that it can move up and down. In addition, if the container falls or tilts and the balancer tilts beyond a certain level, the second valve port is closed by the negative pressure generated within the second valve port. The check float is raised and the second valve port is closed by the check float.

Hereinafter, an embodiment of the present invention will be described with reference to the drawings. Reference numeral 1 denotes a valve body formed in a cylindrical shape, and a threaded portion 2 for connecting a container (not shown) is formed on the outer periphery of the lower part of this body, and further, A valve chamber 3 with a slightly larger diameter is formed in the upper part of the main body, and the upper surface of a small diameter portion 4 opened at the bottom of the valve chamber 3 is formed into a tapered shape to form a first valve port 4.
a, and a tapered second valve port 4b is formed at the lower end of this small diameter portion 4, and this second valve port 4b
The lower end of the main body communicates with a passage 5 provided in the vertical direction within the main body, and the lower end of this passage is penetrated to the outside.
Inside the valve chamber 3, a valve body 7 with a seat gasket 6 attached thereto for opening and closing the first valve port 4a is housed so as to be movable up and down, and the lower part of the valve body is formed in the shape of an inverted truncated cone. It idles in the upper part of this valve body and in the circumferential direction,
A valve rod 8 that engages in the axial direction is made to protrude outside a lid 9 attached to the upper part of the main body 1, and a handle 10 is fixed. 11 is a seal ring. 13 is main body 1
A connecting portion for connecting piping is provided on one side of the valve, and has a connecting thread 17 formed on the inner surface thereof, and is communicated with the valve chamber 3.

To explain the gas release prevention device 16, it has a threaded hole 17 provided at the lower end of the passage 5, a plurality of through holes 18, 18 around the circumference, and a tightening portion 1 on the outer periphery of the bottom.
9, and the upper part of a holder 21 having a slightly larger diameter opening 20 in the center of the bottom surface is screwed. 2
2 is a rod, and a weight 29 is removably attached to the lower end of this rod 22, and the upper end of this rod 22 is
The holder 21 is fixed to the center of the lower surface of a balancer 24 whose lower surface is formed into a substantially tapered surface with a hemispherical or conical shape, and allows the balancer 24 to be moved vertically and tilted.
The rod 22 is passed through the opening 20. Reference numeral 25 denotes a small diameter and long support rod, and a disk 26 provided at the lower end is housed in the balancer 24 so as to be able to move up and down, and is engaged on the balancer 24. Reference numeral 27 denotes a guide fixed approximately in the middle of the support rod 25, which has the function of preventing the support rod 25 from tilting, and which guides the ends of the plurality of leg pieces 28, 28 projecting in the radial direction to the inner wall of the passage 5. Bring it into contact.
29 is a gas circulation part. Furthermore, this support rod 2
A small-diameter guide portion 3 is attached to the upper end of 5 via a stepped portion 30.
1 is formed. 32 is an "abacus bead-shaped" check float whose upper and lower surfaces are respectively formed into conical surfaces, and a small diameter protrusion 33 is provided on the upper surface;
A seal ring 34 is attached to the outer periphery of the check float 32, and the seal ring 34 is seated on the second valve port 4b. Note that when the check float 32 is seated on the second valve port 4b and closed, the protrusion 33 provided on the upper surface of the check float is positioned so as to protrude into the valve chamber 3. Therefore, the valve body 7
When seated in the first valve port 4a, the protrusion 33 is pushed down by the valve body, and the second valve port 4b opens. As described above, the gas release prevention device 16 is composed of a holder 21, a balancer 24 having a weight 23, a support rod 25, and a check float 32.

40 is closer to the container than the second valve port 4b, that is, the passage 5
A safety valve is connected to a cap 45 which springs a disk 43 from the outside by a spring 42 to a branch valve port 41 communicating with the passage 5, and has a discharge port 44.
is installed.

The present invention is as described above, and in a normal case, the gas in the container (not shown) enters the holder 21 through the through hole 18, passes through the passage 5, the second valve port 4b, the small diameter part 4, and the first It passes through the valve port 4a, the valve chamber 3, and the communication portion 13, and is supplied to a connecting pipe (not shown) via a regulator (not shown) (FIG. 1).

Next, if the piping on the downstream side of the valve outlet breaks due to some external cause other than an earthquake or an external impact, the gas flow rate will rapidly increase, especially at the second valve port 4b, causing the check float 32 and the second valve Mouth 4b
Due to the negative pressure created by the narrow gap between the check float 3 and the
2 floats up and closes the second valve port 4b, blocking the outflow of gas. In this case, the check float and the second valve port 4b are kept airtight by the seal ring 34 attached to the check float to completely shut off fluid. In this case, the shape and size of the check float 3 are determined so as not to obstruct the inside of the passage 5 and the second valve port 4b.

Next, in the event of an earthquake, if the container (not shown) tilts forward, backward, left, right, or falls due to vibrations exceeding a certain gal level, the balancer 24 attached to the holder 21 will have a hemispherical or lower surface. Since it is conical, it is inclined. When the balancer 24 is tilted within the holder 21, the support rod 25 is raised via the disk 26 fixed to the lower part of the support rod 25, and the check float 32 attached to the guide part 31 located at the upper part of the support rod 25 is raised. The lower end of is step 3
0, the second valve port 4b is closed, and the outflow of gas is blocked.

In this case, while the gas is in use, the internal gas is flowing through the second valve port 4b, so once the
When the check float 32 rises and closes the second valve port 4b, the check float 32 remains floating and remains closed due to the pressure of the pressure section.

Further, when gas is not in use, the check float 32 rises once to close the second valve port 4b, but since there is no gas flow, the check float 32 descends once the external cause is removed. , the second valve port 4b is opened again.

In addition, if the container is overturned due to an earthquake or tilted at a certain angle or more in the front, back, left, and right directions, the container will be reinstalled in its normal position and the fluid pressure on the downstream side of the gas outflow will be restored. Second valve port 4b
remains closed.

Furthermore, when taking out the filling inside the container with the container inverted, first rotate the handle 10 to lower the valve body 7, as shown in FIG. When the valve body 7 descends, the valve body 7 touches the protrusion 33 of the check float 32 that protrudes into the first valve port 4a.
When the valve body 7 is pushed down until it is seated on the first valve port 4a, the check float 32 is pushed down via the protrusion 33 and opens the second valve port 4b. In this state, after the valve outlet side is properly connected to the piping, when the handle 10 is rotated again to raise the valve body 7 and open the first valve port 4a, the check float 32 will remain in the depressed position. The contents within the container will flow out through the piping.

The weight of the weight 23 attached to the balancer 24 via the rod 22 is of course adjusted to correspond to a predetermined GAL.

As described above, the present invention is extremely safe and prevents gas leakage accidents because the check float can be closed by changing the inclination angle of the container in which the device is installed and the flow rate through the valve port. or,
After this gas release prevention device is activated while gas is in use, if you want to set it again, you must close the first valve port and push down the check float, so you must operate the handle to do so. It has the advantage of being able to confirm safety,
In addition, the contents of the container, which has fallen down, can be easily transferred to another container via the connecting pipe.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention; FIG. 1 is an overall sectional view, FIG. 2 is a sectional view of the main part with only the check float in operation, and FIG.
4 is a sectional view of the main part showing the operating state of the gas release prevention device, and FIG. 5 is a sectional view of the main part when the valve body is closed. 1 is the valve body, 4a is the first valve port, 4b is the second
Valve port, 5 passage, 7 valve body, 10 handle, 2
1 is a holder, 24 is a balancer, 25 is a support rod, 32 is a check float, and 33 is a protrusion.

Claims (1)

[Scope of utility model registration request] In general, in a valve that is provided with a connecting part for connecting pipes, has a safety valve on the other side, and has a handle connected to a valve body that opens and closes the valve opening provided inside, the valve is provided in communication with the valve opening. A balancer is attached to a holder attached to the lower end of the passage so as to be tiltable in the front, back, right and left directions, a support rod that moves up and down as the balancer is tilted is housed in the passage, and a support rod is provided at the upper end of the support rod above the passage. A container with a gas release prevention device, which is equipped with a check float that can be moved up and down, and has a protrusion that opens and closes with a second valve port and abuts against a valve body that closes the first valve port when the second valve port is closed. valve.