JPS6123981Y2 - - Google Patents

Description

[Detailed description of the invention] The present invention relates to a container valve installed at the mouth of a liquefied petroleum gas container (LPG cylinder), etc., and in particular, even if the valve is opened after earthquake recovery, the gas combustor is left open. This relates to an earthquake-sensing supply cutoff container valve that prevents gas from being supplied to the combustor in the case where the combustor is installed, thereby avoiding secondary disasters caused by earthquakes.

Generally, this type of gas is supplied as shown in Figure 1.
A container valve 2 is attached to a liquefied fuel container 1 such as an LPG cylinder, and the gas sent out when the valve 2 is opened is supplied to an indoor combustor 4 through a pipe 3. A regulator 5 is installed nearby to keep the gas pressure constant.

When attempting to automatically stop the gas supply in such a gas supply device due to an earthquake, the following four methods can be considered.

(a) A vibration sensing mechanism is incorporated into the container valve 2 as in the present invention.

(b) The same mechanism as above is incorporated into the next stage regulator 5.

(c) Incorporate into the indoor exterior 3' of piping 3.

(d) Incorporate into the interior 3″ of pipe 3.

Of course, for the purpose of stopping the gas supply, it is ideal to cut off the gas at a position as close to the liquefied fuel container 1 as possible.

Therefore, the most desirable method among the above methods is (a).

Therefore, it is considered a good idea to incorporate the earthquake sensing mechanism into the container valve 2, but in this case, if the gas supply is simply cut off due to the earthquake as described above, disasters such as fires will not be extinguished. However, consideration must be given to the issue of secondary disasters.

In other words, if an attempt is made to use the combustor 4 again after the gas supply has been stopped due to an earthquake, and gas is inadvertently supplied to the combustor 4, the combustor 4 may have been left open at this time. If this occurs, raw gas will be released from the vessel 4, which will cause secondary disasters worse than those directly caused by the earthquake, so this is not a fundamental countermeasure.

This invention was developed as a solution to the above problems, and its main purpose is to provide extremely safe systems that not only prevent disasters immediately after an earthquake, but also fundamentally eliminate the possibility of secondary disasters occurring. An object of the present invention is to provide a container valve for shutting off supply with high vibration sensitivity.

Below, a curved embodiment of the present invention will be described based on the drawings.

The seismic supply cutoff container valve according to the present invention includes a valve body 6 and a gas inlet 7 provided at the lower end of the valve body 6 and attached to the liquefied fuel container 1.
, a gas outlet 9 communicating with the side surface of the valve body 6 via a gas flow path 8, and a valve opening/closing handle 10 installed from the upper end of the valve body 6 by screwing or other means. The gas passage 8 is opened and closed by opening and closing the handle 10.

Therefore, in the present invention, the gas flow path 8
A seismic actuation section 11 and a gas on-off valve section 12 are installed in this order from the side of the gas inlet 7.

Next, the seismic sensing operation section 11 and the gas on-off valve section 12 will be explained in detail.First, this gas on-off valve section 1
2 is disposed in the upper position and has an upward valve seat 13
an open valve seat 14 equipped with a push pin 16 that is loosely fitted through the opening 14' of the open valve seat 14;
Small diameter portion 16' located at the bottom of this push pin 16
The seismic isolation valve 17 is fitted with a gap 18 in between.

The gas flow path 8 is closed when the seat gasket 15 of the valve opening/closing handle 10 presses against the upward valve seat 13, and a closing expansion valve is provided at the lower end of the push pin 16. A portion 16'' is formed.

Furthermore, a return spring 20 is interposed between the flange 19 provided at the upper end of the push pin 16 and the above-mentioned seismic cutoff valve 17, so that the closing bulge 16'' is caused to shut off by the elasticity of the spring 20. The seismic shutoff valve 17 is pressed against the lower surface of the valve 17 to close the gap 18, and the seismic cutoff valve 17 is pressed against the lower surface of the opening valve seat 14 to close the gas flow path. A facing valve seat 21 is provided,
The gas on-off valve section 12 is thus configured.

Next, the seismic actuator 11 may be of any suitable type as long as it senses an earthquake and responds, thereby causing the push pin 16 to move upward as described below. This figure shows a spherical actuator 22 that moves upward when an earthquake is felt.

To explain this in more detail, the seismic actuating section 11:
Shutoff valve mounting plates 2 arranged in a stacked manner from above
3. It is composed of a ring-shaped upper permanent magnet 24, an annular spacer 25, and a ring-shaped lower permanent magnet 26, and the seismic isolation valve 17 of the gas on-off valve section 12 is mounted on the mounting plate 23. At the same time, the closing swollen portion 16'' of the push pin 16 is slidably fitted into the guide hole 23' of the mounting plate 23 and protrudes downward. The actuator 22 is fitted into a valve body 27 which is placed in the set state during normal operation.

A sloped concave seat 27' recessed in the shape of a triangular pyramid is formed on the upper surface of the valve body 27, and a spherical actuator 22 is placed on this. The flange plate 27″ is an adjustment spring 28
The lower permanent magnet 26 is mounted on the same plate 27''.

Here, this flange plate portion 27'' is formed into a square shape as shown in FIG. It is prevented from moving upward, and therefore, a crescent-shaped gap 31 remains between the step edge 30 and the flange plate 27'', so that the gas flow path 8 is not blocked here. There isn't.

32, a part of which is cut out and shown in Figure 2.
is a known safety valve.

Since the valve opening/closing handle 10 remains closed until the liquefied fuel container 1 is set at a predetermined outdoor position, the gas flow path 8 is closed by pressing the seat gasket 15 and the upward valve seat 13. At the same time, the gasket 15 pushes down the push pin 16 against the elasticity of the return spring 20, and the closing swelling part 16'' pushes down the actuator 22, which is placed on the seat body 27. in a state.

Next, when the piping installation etc. of the container 1 are completed, the valve opening/closing handle 10 is operated to open the opening valve seat 14, and the gas from the container 1 is released from the gas inlet 7 into a seismic motion as shown by the arrow. The gas is supplied from the gas outlet 9 to the combustor 4 side through a gas passage 8 opened by a gap left on the outer periphery of the section 11 or a passage 14' of the gas on-off valve section 12.

At this time, the push pin 16 is moved upward and backward by the return spring 20 as shown in the figure, but since the actuator 22 is located close to the lower permanent magnet 26,
The gas supply state and the seismic posture are thus set.

Next time an earthquake occurs, the spherical actuator 22
As a result, the actuator 22 approaches the upper permanent magnet 24 and is attracted to it, causing the push pin 16 to roll as shown in FIG. is pushed up together with the return spring 20, and at this time, the seismic isolation valve 17 is also pushed up by the same pin 16.
The cutoff valve 17 moves upward in conjunction with the downward valve seat 2.
1, the passage 14' is closed and the gas flow path 8 is closed, thereby cutting off the gas supply.

In this way, the gas supply cutoff function against earthquakes is accomplished, but of course this cutoff state must be released when the combustor 4 is to be used again.

Then, when the valve opening/closing handle 10 is operated to close, the push pin 16 is pushed down by the seat gasket 15 as shown in FIG. The gas inlet 7 side and the gas outlet 9 side are in an open state through the gas inlet 7 side and the gas outlet 9 side.

However, at this time, the pressure on the gas inlet 7 side is high due to the gas, so the seismic isolation valve 17 continues to be pressed against the downward valve seat 21. If the handle 10 is opened and closed several times, a secondary disaster prevention small flow path 33 will be formed in which gas will flow into the gas outlet 9 side when the gap 18 is opened, so that the gas will gradually flow into the gas outlet 9 side as well. The gas creates a high pressure, and the gas pressures on the inlet and outlet sides become balanced, so the seismic isolation valve 17 descends and separates from the downward valve seat 21, opening the port 14' and shutting down the combustor. It becomes possible to supply gas to 4. Furthermore, at this time, the actuator 22 is set by the opening operation after the closing movement of the valve opening/closing handle 10, and is left on the inclined concave seat 27', so that it is again in a state where it can sense an earthquake.

However, when the valve opening/closing handle 10 is reset, if the combustor 4 had been left open as it was at the time of the earthquake, the closing operation of the handle 10 would cause the secondary combustion to occur as described above. Even if the disaster prevention small flow path 33 is formed and gas is released to the gas outlet 9 side, since the outlet 9 side is open to the atmosphere, the gas pressure will not increase and the seismic isolation valve 1
Even if you forget to close the combustor 4 because it becomes impossible to open the seismic shutoff valve 17, a situation where a large amount of gas is released inadvertently will not occur. I noticed that I forgot to close step 4,
After the container 4 is closed in a timely manner, a reset operation is performed.

As described above, in the present invention, the valve body 6 has a gas inlet 7 attached to the liquefied fuel container 1, a gas outlet 9 piped to the combustor 4 side, and a valve opening/closing handle 10. A seismic actuating part 11 and a gas on-off valve part 12 are sequentially installed inside the gas flow path 8 formed between the gas outlet 9 and the on-off valve part 12, which is pressed against the valve opening/closing handle 10 which is moved to close. An open valve seat 14 that shuts off the gas flow path 8 is loosely fitted into the valve seat 14, and is pushed by the valve opening/closing handle 10 during the closing operation, and a seismic actuating section 11
At the same time as setting the actuator 22 of the handle 10,
The push pin 16 is configured to move backward when the gas flow path 8 is opened due to the opening movement of the
In the container valve for seismic supply cutoff of the liquefied fuel gas container 1, which is composed of a seismic cutoff valve 17 which operates together with the opening valve seat 14 and blocks the gas flow path 8, the push pin 16 A closing swelling part 16'' is formed at the end of the actuator 22 side, and a closing swelling part 1 of the same pin 16 is formed.
6″ above with a gap 18 above the seismic isolation valve 17
is inserted, and the closing expansion part 16'' is pressed against the seismic cutoff valve 17 to close the gap 18, and while the gas flow path 8 is in the cutoff state, the valve opening/closing handle is closed. When this happens, the pushing pin 16 moves, thereby causing the occlusion swelling part 1 to move.
6'' is separated from the seismic isolation valve 17 held in contact with the opening valve seat 14, and the gas flow path 8 is opened in the gap 18 between the isolation valve 17 and the push pin 16. Since this relates to a container valve for seismic supply cutoff of a liquefied fuel gas container in which a secondary disaster prevention small flow path 33 is opened, the seismic actuating part 11 is incorporated into the valve body 6. Therefore, the gas can be shut off at the mouth of the liquefied fuel container 1, and there is no leakage of gas even if the piping 3 or the like breaks due to an earthquake, and there is no possibility that the regulator 5 will be damaged if the container 1 falls over. Considering that even if something were to happen, the container valve, which is located closer to the container 1 and installed directly above it, would not be damaged, it can be seen that its reliability is high.

Furthermore, since this type of container valve is currently legally required to be replaced within six years, it is not only possible to design with a guideline for durability issues, but also the liquefied fuel container 1 is Since it is sent to the manufacturer for gas filling every two months or so, the performance of the container valve can be checked and repaired during this distribution process. If you go around it, the labor required will be unnecessary.

More importantly, according to this invention, in the event of an earthquake, it is not only possible to simply cut off the gas supply;
When resetting the combustor after an earthquake, we have created a small flow path to prevent secondary disasters, so by knowing that the seismic isolation valve cannot be opened, it is possible to realize that the combustor has been forgotten to close, and to close the combustor in a timely manner and re-set it. Since it can be operated, it is possible to reliably prevent secondary disasters without causing a large amount of gas to be released inadvertently even in times of confusion after an earthquake.

[Brief explanation of the drawing]

Fig. 1 is an explanatory diagram of a piping system showing a general example of a gas supply device using a liquefied fuel container, Fig. 2 is a vertical side view showing an example of a container valve according to the present invention, and Fig. 3 is a view of the vicinity of the seat body of the valve. FIG. 4 is a longitudinal sectional side view of the main part showing the state of the valve at the time of earthquake detection, and FIG. 5 is a longitudinal sectional side view of the main part showing the state at the time of the reset operation. DESCRIPTION OF SYMBOLS 1...Liquid fuel container, 4...Combustor, 6...Valve body, 7...Gas inlet, 8...Gas flow path, 9
...Gas outlet, 10...Valve opening/closing handle, 1
1...Seismic actuation section, 12...Gas opening/closing valve section, 14
...Opening valve seat, 16...Pushing pin, 16''...Closing swelling part, 17...Seismic isolation valve, 18...Gap, 2
2... Actuator, 33... Secondary disaster prevention small channel.

Claims (1)

[Scope of utility model registration request] The valve body has a gas inlet attached to the liquefied fuel container, a gas outlet piped to the combustor side, and a valve opening/closing handle. A vibration-sensing operating part and a gas on-off valve part are provided inside, and the on-off valve part has an opening valve seat that presses against a closed valve opening/closing handle to shut off the gas flow path, and is loosely fitted into the valve seat. ,
A push pin that is pushed by the valve opening/closing handle during the closing operation to set the actuator of the seismic actuator and also moves back when the handle opens to open the gas flow path, and the seismic actuator. A seismic supply cut-off valve for a liquefied fuel gas container, which is composed of a seismic cut-off valve that operates together with a push pin in response to the response of an actuator due to vibrations received by the liquefied fuel gas container, and presses against the opening valve seat to cut off the gas flow path. In the container valve for use in a vessel, a blocking bulge is formed at the end of the push pin on the operator side, and the seismic isolation valve is fitted above the blocking bulge of the pin with a gap therebetween, and the blocking bulge is When the seismic shutoff valve is pressed to close the gap and the gas flow path is shut off, and the valve opening/closing handle is closed, the push pin that is pushed thereby moves,
A secondary disaster prevention small flow in which the blocking bulge separates from the seismic shutoff valve held in contact with the open valve seat and opens a gas flow path in the gap between the shutoff valve and the push pin. A container valve for seismic supply cut-off of a liquefied fuel gas container which opens a passage.