JPH0430310B2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a self-pressure container valve device used, for example, in a fire extinguisher. This invention relates to a small self-pressure container valve device that allows gas to be ejected instantly.

[Prior Art and its Problems] Conventionally, there is a container valve device that automatically opens an opening of a cylinder filled with a fire extinguishing agent to eject fire extinguishing gas from the cylinder.

This container valve device has a sealing plate placed opposite to the gas outlet, and when the sealing plate is not destroyed, the gas outlet is closed, but when the sealing plate is destroyed, the broken sealing plate is closed. with a closing mover,
The container valve body is configured to include a container valve body that can be attached to the cylinder so as to communicate with the opening of the cylinder, and a destruction member such as a cutter that can destroy the sealing plate. In this container valve device, at a predetermined time, for example, in the event of a fire, pressure from, for example, a carbon dioxide gas cylinder placed separately is applied to the cutter, the sealing plate is destroyed by the movement of the cutter, and the container valve body is removed from the broken sealing plate. As the gas inside is released, the mover is moved from the gas outlet toward the sealing plate, and the mover closes the broken sealing plate, thereby preventing gas from being discharged from the broken sealing plate. The gas is discharged from the gas outlet at the same time as the machine stops.

However, such a container valve device requires another gas cylinder that supplies gas pressure as a driving source to drive the cutter that destroys the sealing plate, and furthermore, piping must be constructed from this gas cylinder to the cutter. There must be. Therefore, piping work is complicated, and in order to operate the cutter accurately, careful piping work must be performed to prevent gas leakage in the piping. Moreover, extra space is required for arranging the cylinder as a gas pressure source.

On the other hand, in the case of a fire extinguishing system that uses halon extinguishing agent, halon gas must be discharged from the extinguishing agent cylinder within a short period of time. This is because halon gas emits toxic gas when extinguishing a fire. Therefore, currently, container valve devices are designed to discharge halon gas from the fire extinguishing cylinder within 30 seconds.
There are legal regulations. To extinguish a large fire, a large fire cylinder is required, and as long as this legal regulation is followed, a small container valve is sufficient for a large fire cylinder.

However, in order to minimize the toxic gas generated by the decomposition of halon gas, for example,
Large cylinders require large container valves to exhaust halon gas within a very short time, less than 10 seconds. In this case, since a container valve is usually attached to the top of the cylinder, if a large container valve is attached to a large cylinder, the cylinder itself becomes unstable and tends to fall over, causing installation problems.

This invention has been made based on the above circumstances. In other words, the object of the present invention is to eliminate the need for a special gas pressure source as a drive source for the cutter, eliminate the need for complicated piping work, and, moreover, eliminate the need for a large amount of gas from a cylinder in a short period of time. The object of the present invention is to provide a small container valve device capable of releasing gas.

[Means for solving the above problems] The outline of the present invention for solving the above problems is to provide a first sealing plate opposite to the gas discharge port, and when the first sealing plate is not destroyed, a container valve body that is attachable to the cylinder so as to communicate with an opening of the cylinder, the valve body including a mover that closes the gas outlet and closes the first sealing plate when the first sealing plate is broken; A second destruction member is provided in which a second sealing plate is provided and the second sealing plate is breakable in a branch pipe communicating with the container valve main body, and a second destruction member is provided in which the second sealing plate is broken and the second sealing member is guided from within the container valve main body by the destruction of the second sealing plate. Due to the pressure of the gas,
a first destruction member that destroys the first sealing plate;
By destroying the second sealing plate with the second destruction member, the gas pressure inside the container valve body is applied to the first destruction member, and the first destruction member that moves thereby destroys the first sealing plate, and the moving element is This self-pressure container valve device is characterized in that the gas in the cylinder can be discharged from the gas discharge port by movement.

Furthermore, the above configuration will be explained in detail using the drawings. FIG. 1 is a schematic front sectional view of a self-pressure container valve device according to the present invention, and FIG. 2 is a schematic side sectional view thereof.

As shown in FIG. 1, the self-pressure container valve device of the present invention comprises a container valve main body 1 including a mover 2 and a first
A first destruction section 5 including at least a sealing plate 3 and a first destruction member 4;
1 and a second destruction portion 12 .
A destruction part 10 is provided.

The container valve body 1 has a first opening 1a at its lower end for connection with a fire extinguishing cylinder 1c, and a second opening 1b provided with a first sealing plate 3 at its side.
and on the side opposite to the second opening 1b,
It has a gas exhaust port 6 whose one end is inserted into the main body. The other end of the gas outlet 6 is connected to a pipe having an extinguishing gas outlet (not shown).

The mover 2 has a concave portion 2 provided at one end thereof.
In order to prevent the gas in the container valve body 1 from flowing out from the gas outlet 6 by means of a biasing member 7, for example, a coil spring, provided between the first sealing plate 3 and the first sealing plate 3, the gas outlet 6 is always The ends are pressed.
Further, the recessed portion 2a has a size sufficient to accommodate the biasing member 7 when the biasing member 7 is compressed, and when the first sealing plate 3 is broken by the first cutter 4. , has a size that can cover the destroyed portion and the tip of the first cutter 4 protruding from the first sealing plate, and the other end of the mover 2 pressed against the gas discharge port 6 of the mover 2. The shape is sufficient to sufficiently cover the opening of the gas discharge port 6.

The first breaking part 5 has one end communicating with the lower side surface of the container valve body 1 and the other end contacting the center part of the first sealing plate 3. A slider 9 slidably fitted in the first branch pipe 8a near the first sealing plate 3 of the branch pipe 8 consisting of a first branch pipe 8a and a second branch pipe 8b and a tip thereof facing the first sealing plate 3. The first breaking member 4 attached to the slider 9 by
Further, an appropriate number of gas vent holes 8c, for example 4, are provided near the first sealing plate 3 of the first branch pipe 8a.
It is provided.

In the second branch pipe 8b, the second destruction portion 10 includes:
a second sealing plate 11 provided near the lower side surface of the container valve main body 1; a breaking member 12 provided in the second branch pipe 8b so as to be movable toward the second sealing plate 11; and the second breaking member 12. It has a driving member 13 for driving. The drive member 13 may be any member as long as it can drive the second destruction member so as to destroy the second sealing plate, and may be configured using, for example, the electromagnetic force of a solenoid or the explosive pressure of gunpowder. I can do it.

The first sealing plate 3 and the second sealing plate 11 may be made of any material that can withstand the internal gas pressure and is easily destroyed by a destructive member that rushes forward with an appropriate force, such as a thin metal plate or a synthetic It can be constructed from a resin sheet or the like. Furthermore, the first breaking member 4 and the second breaking member 12 may be anything that can break the first and second sealing plates 3 and 11, respectively, and may be, for example, a drill-shaped cutter.

[Function] Next, the function of the above structure will be described with reference to FIGS. 3 to 6. FIG. 3 is an explanatory diagram showing a state in which the second sealing plate 11 of the self-pressure container valve device according to the present invention is destroyed, FIG. 4 is an explanatory diagram showing a state in which gas has flowed into the branch pipe 8, and FIG. The figure shows the second sealing plate 3.
FIG. 6 is an explanatory diagram showing a state in which the movable member 2 has been moved to the first sealing plate 3 side.

First, in response to a signal indicating the occurrence of a fire, if the drive member 13 uses gunpowder, for example, the gunpowder explodes.
The explosion pressure causes the second destruction member 12 to move forward and destroy the second sealing plate 11, as shown in FIG. Further, if the driving member 13 is a solenoid, the solenoid is driven, and the second destruction member 12 attached to the tip of the solenoid core moves forward to destroy the second sealing plate 11. Then, the high-pressure gas filling the fire extinguishing cylinder and the container valve body 1 flows into the branch pipe 8, and pressure is applied to the slider 9 in the direction of the arrow as shown in FIG. The advancing first destruction member 4 destroys the first sealing plate 3 as shown in FIG. As a result, as shown in FIG. 5, the high pressure gas within the container valve body 1 passes through the tear in the first sealing plate and blows out to the outside from the appropriately provided gas vent hole 8c, as shown by the arrow. Then, the pressure decreases at the tear portion of the first sealing plate 3 due to the rapid flow of high-pressure gas, so the mover 2 moves toward the first sealing plate 3 against the biasing force of the biasing member 7. As a result, as shown in FIG. 6, the concave portion 2a of the slider 2 covers the tear in the first sealing plate 3, stopping the gas from flowing out from the tear, and the gas exhaust opened by the movement of the slider 2. Gas flows out from the outlet 6, and extinguishing gas is ejected from a not-illustrated nozzle connected to the tip of the gas discharge port 6 to extinguish the fire.

The concave portion 2a of the mover 2 accommodates the compressed biasing member 7, and the tip of the first breaking member 4 that breaks the first sealing plate 3 and protrudes into the container valve body 1 comes into contact with the mover 2. Moreover, since the recessed portion allows the contact surface with the first sealing plate to be small, gas outflow from the tear can be reliably prevented with a small biasing force.

Moreover, not only the first destructive part 3 but also the second destructive part 11
The device is equipped with a It will be small.

[Embodiment of the Invention] Hereinafter, an embodiment of the present invention will be described with reference to the drawings. FIG. 7 is a longitudinal sectional view of the container valve main body and the first breaking portion of a self-pressure container valve device according to an embodiment of the present invention, and FIG. 8 is a longitudinal sectional view of the second breaking portion thereof.
The structure of a self-pressure container valve device which is an embodiment of the present invention is as shown in FIG.
It is provided with a breaking part 40 and a second breaking part 50 shown in FIG.

The container valve main body 20 has a first opening 21 at its lower end that can be inserted into an opening of a fire extinguishing cylinder (not shown), and a communication hole communicating from the first opening 21 to the mover storage chamber 22. It has 23. The mover storage chamber 22 is provided with a second opening 24 on one side thereof into which a pipe fitted with an ejection nozzle (not shown) is fitted, and a third opening 25 is provided opposite to the second opening 24. establish. This third opening 25 is sealed with a first sealing plate 26 using a cap nut 27 having a hole 27a in the center.
A cylindrical slider 30 that is slidable inside the slider storage chamber 22 is arranged. The mover 30 has a concave portion 30a on the end face on the first sealing plate 26 side.
has. A first coil spring 30b is installed between the concave portion 30a and the first sealing plate 26, and the movable element 3 always closes the second opening 24 due to its biasing force. Further, in the movable element storage chamber 22, a communication groove 28 is appropriately provided in a sliding portion with the movable element 30 to enable gas flow. Furthermore, the communication hole 23 is connected with a first branch pipe 29b that extends further back than the plane of the paper in FIG.

As shown in FIG. 7, the first breaking section 40 mainly includes a first cutter 41, a piston 42 that holds the first cutter 41, and a cylinder 43 that houses the first cutter 41 and the piston 42. The first cutter 41 is housed in a cylinder 43 together with a piston 42 provided at its rear end, connects a second branch pipe 29a that communicates with the second destruction part, and has a fourth opening located at the rear end of the cylinder 43. Due to the gas pressure flowing in from 44, it is possible to move in the direction of the first sealing plate. Further, the first cutter 41 is always urged in the opposite direction to the sealing plate by a second coil spring 45 installed between the piston 42 and the tip of the cylinder 43.
Further, the tip of the first cutter 41 is arranged to face the first sealing plate at right angles, and a recess 46 is provided at the tip to facilitate gas passage when the first sealing plate 26 is broken. . Further, a gas vent hole 47 is provided between the cylinder 43 and the cap nut 27 to release gas to the outside.

As shown in FIG. 8, the second destruction part 50 has a fifth opening 51 provided at one end thereof, and the second branch pipe 2
The ends of the first branch pipe 29b are connected to each other, and the end of the first branch pipe 29a is connected to a sixth opening 52 provided on the side of the one end, and as shown in FIG. Solenoid 53 and second cutter 5
4 and a second cutter support member 55. The second cutter 54 is perpendicularly opposed to a second sealing plate (not shown) provided at the tip of the second branch pipe 29b such that the center of the second sealing plate and the axis of the second cutter 54 coincide with each other. The circumferential surface of the guide member 56 fits loosely into the guide hole 56a of the guide member 56 so that its movement is easy and accurate. This guide hole 5
6a communicates with the second opening 52, and an O-ring 57 is provided at the end of the guide member 56 to prevent gas from flowing out. The second cutter 54 has a recess 58 for degassing at its tip.
The rear end portion has a screw portion for screwing into the lower part of the second cutter support member 55. The second cutter support member 55 has a base 59 and a second cutter support member 5.
It is biased in the direction of arrow X by a third coil spring 60 attached between it and the flange portion 55a of No. 5. Also, from the end face of the base 59, the solenoid 53
A groove 55b is provided on the peripheral side of the end of the second cutter support member 55 that protrudes to the side. This groove 55
The collar piece 61a of the locking member 61 is locked to b to prevent the second cutter support member 55 from moving in the X direction. On the other hand, a substantially truncated conical pressing member 62 is provided at the tip of the core 53a of the solenoid 53, and its tip faces the locking member 61 in order to move the locking member 61 in the direction of arrow Y. Further, between the locking member 61 and the base 59, the locking member 6
1 is provided with a ball bearing 63 so that it can be easily moved in the direction of arrow Y. Further, a fourth coil spring 64 is installed between the pressing member 62 and the second cutter support member 55 to constantly bias the pressing member 53a in the Z direction.

Next, the operation of the above configuration will be explained. First, the solenoid 53 is energized by a fire signal, and the core 53a moves forward and the truncated cone-shaped pressing member 62 is inserted into the hole of the locking member 61. The locking member 61 expands in the direction of arrow Y, and the second cutter The engagement with the holding member 55 is released. Then, the second cutter 54 instantaneously rushes toward the second sealing plate due to the bias of the third coil spring 60 and destroys the second sealing plate. As a result, gas flows through the tear in the second sealing plate and into the guide member 5.
Gas pressure is applied to the piston 42 of the first destruction part 40 through the guide hole 6 and the first branch pipe 29a, and the first cutter 41 attached to the piston 42 instantly rushes toward the first sealing plate 26. Destroy the first sealing plate 26. Then, the gas in the mover storage chamber 22 is ejected to the outside through the tear in the first sealing plate 26 and the gas vent hole 47. At this time, the vicinity of the tear in the first sealing plate 26 is
The pressure decreases because the gas flow rate increases significantly. As a result, the mover 30 rushes toward the first sealing plate 26 against the biasing force of the first coil spring 30b, comes into close contact with the first sealing plate 26, and the first sealing plate 26
Prevent gas from escaping through the cracks in the At the same time, extinguishing gas is ejected from the second opening 24 through a nozzle through a pipe (not shown) to extinguish the fire.

According to the device of this embodiment, since the sealing plate is destroyed by the pressure of the urging member, a significantly smaller solenoid is required compared to a structure in which the sealing plate is destroyed only by a solenoid. Therefore, the entire device can be made compact.

[Effects of the Invention] As described above, according to the present invention, the gas pressure of the fire extinguishing gas is used as the drive source for the cutter.
There is no need to install another cylinder as a gas source,
Therefore, it is possible to provide a small self-pressure type container valve device that does not require complicated piping work and can release a large amount of gas from a cylinder within a short time.

[Brief explanation of drawings]

FIG. 1 is a schematic front sectional view of the self-pressure container valve device of the present invention, FIG. 2 is a schematic side sectional view thereof, FIG. 3 is a schematic side sectional view thereof, and FIG. FIG. 4 is a diagram showing a state in which the second sealing plate is destroyed, FIG. 4 is a diagram showing a state in which gas has flowed into the branch pipe, and FIG. 5 is a diagram showing a state in which the second sealing plate is destroyed. , FIG. 6 shows the state in which the mover has moved toward the first sealing plate, and FIG. 7 shows the container valve body and the first breaking part of the self-pressure container valve device which is an embodiment of the present invention. FIG. 8 is a longitudinal sectional view of the second destroyed portion. 1... Container valve body, 2... Mover, 3... First
Sealing plate, 4...first destruction member, 5...first destruction part,
6... Gas discharge port, 7... Biasing member, 8... Branch pipe, 9... Slider, 10... Second destruction part, 11...
... second sealing plate, 12 ... second destruction member, 13 ... drive device.

Claims (1)

[Scope of Claims] 1. A first sealing plate is provided opposite to the gas discharge port, and when the first sealing plate is not destroyed, the gas discharge port is closed, but when the first sealing plate is destroyed, this first sealing plate is closed. A container valve main body that is equipped with a mover for closing a first sealing plate and that can be attached to the cylinder so as to communicate with the opening of the cylinder; a second sealing plate is provided in the branch pipe that communicates with the container valve main body; A second destruction member is provided to destroy the second sealing plate, and the pressure of the gas induced from within the container valve body by the destruction of the second sealing plate,
a first destruction member that destroys the first sealing plate,
By destroying the second sealing plate with the second destruction member, the gas pressure inside the container valve body is applied to the first destruction member, and the first destruction member that moves thereby destroys the first sealing plate, and the moving element is A self-pressure container valve device characterized in that gas in a cylinder can be discharged from a gas discharge port by movement. 2. The second breaking member has a cutter that can be driven by a solenoid.
Self-pressure type container valve device as described in .