JP2003240152A - Rapid opening pressure regulating valve, and extinguishing device using valve - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a rapid opening pressure regulating valve having a simple structure enabling rapid opening and restricting of secondary side pressure at a target pressure or lower. <P>SOLUTION: The rapid opening pressure regulating valve comprises a body 1, a valve element member 2, a spring bearing 3, a spring 4, a confining pressure mechanism 5, a valve operating mechanism 6, and the like. The valve operating mechanism 6 is operated to break a sealing plate 52 with a nip 65 to apply pressure of an inlet 11a to an opened pressure receiving surface 25. In this state, a working face diameter of a valve seat 13, pressure receiving areas of a closed pressure receiving surface 24 and the opened pressure receiving surface 25, and a force of the spring 4 are determined to provide a relation in which the pressure of an outlet 12a is a predetermined pressure or lower. In an un-operating time of the valve operating mechanism 6, a force by the inlet pressure acting on a valve cap 22 is larger than that of the spring 4 to close the valve. In an operating time of the valve operating mechanism 6, a force acting on the opened pressure receiving surface 25 cancels that acting on the valve cap 22 to open the valve with a spring force. In an increasing time of the outlet pressure, a force acting on the closed pressure receiving surface 24 is larger than the spring force to close the valve and restrict the outlet pressure within a certain value. Thus, withstand pressure of a pipe, the valve, or the like may be low. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rapid opening pressure regulating valve which can be rapidly opened and is required to limit the maximum pressure on the secondary side, for example, mounted on an inert gas cylinder for high pressure fire extinguishing, and a fire extinguishing apparatus using the same. , A high-pressure gas cylinder device and a rapid fluid supply device.

[0002]

_2. Description of the Related Art For example, CO used in a CO ₂ fire extinguisher
_{As the two-} cylinder valve, a valve that can be rapidly opened by introducing high-pressure starting gas is generally adopted, but this type of valve cannot limit the pressure on the outlet side. On the other hand, as a valve provided with a pressure reducing mechanism, various cylinder valves with a pressure reducing valve, which are opened and closed by turning a handle, have been proposed (for example, JP-A-3-21917).
No. 2). However, such valves do not allow rapid opening.

[0003]

DISCLOSURE OF THE INVENTION The present invention solves the above problems in the prior art and enables rapid opening and quick opening of a simple structure capable of limiting the secondary side pressure below the target pressure. An object of the present invention is to provide a pressure regulating valve, a fire extinguisher using the pressure regulating valve, a high pressure gas cylinder device, and a rapid fluid supply device.

[0004]

According to the present invention, there is provided a main body having a fluid inlet and an outlet and a valve seat, one end side and the other end side, and the one end side is opened and closed by contacting with and separating from the valve seat. Closed pressure receiving surface 24 that is connected to the valve body and the outlet and receives pressure in the closing direction
And a valve body member that is formed on the other end side and receives the pressure in the opening direction and is guided to the main body so as to be movable in the opening and closing direction; and between the one end side and the other end side. A passage for conducting, a biasing member for biasing the valve member in the opening direction, a sealing means having a sealing plate attached so as to close the passage, and a breaking member for breaking the sealing plate when actuated. And a sealing pressure releasing means attached to the main body, which is formed so as to supply the pressure in the passage to the open pressure receiving surface,
The pressure receiving area for receiving the fluid pressure of the valve body seated on the valve seat, the pressure receiving area for the closed pressure receiving surface, the pressure receiving area for the open pressure receiving surface, and the urging force of the urging member are When the one end side and the other end side are electrically connected to each other and the open pressure receiving surface receives the pressure in the opening direction to open the valve body portion, and when the pressure at the outlet exceeds a predetermined pressure, the valve body portion is closed. The rapid opening pressure regulating valve is characterized in that the valve closing force is larger than the biasing force and the valve body is closed.

Further, according to the present invention, there is provided a main body having a fluid inlet / outlet and a valve seat, a valve body portion having one end side and the other end side, and being opened / closed at the one end side by contacting with / separating from the valve seat. A valve body having a closed pressure receiving surface 24 that is connected to the outlet and receives a pressure in the closing direction, and an open pressure receiving surface 25 that is formed on the other end side and receives the pressure in the opening direction and is guided to the main body so as to be movable in the opening and closing directions. A member, a passage for connecting the one end side and the other end side to each other, an urging member for urging the valve body member in the opening direction, and a sealing member attached so as to close the passage. And a sealing pressure releasing means attached to the main body, which is formed so that the pressure in the passage can be supplied to the open pressure receiving surface while keeping the sealing member open when activated. A pressure receiving area for receiving a fluid pressure of the valve body seated on the valve seat, The pressure receiving area of the pressure receiving surface, the pressure receiving area of the open pressure receiving surface, and the urging force of the urging member establish conduction between the one end side and the other end side of the passage, and the open pressure receiving surface receives the pressure in the opening direction. When the pressure at the outlet exceeds a predetermined pressure, the valve closing force for closing the valve body is larger than the biasing force and the valve body is closed. It is a rapid opening pressure regulating valve characterized by being defined in a relationship.

Further, in the present invention, the sealing member is a sealing plate, and the sealing pressure releasing means has a needle portion provided so as to face the sealing plate, and the needle portion is formed by receiving a fluid pressure. It has a piston-shaped member for urging the needle portion so as to penetrate the sealing plate, and an operation portion formed so as to urge the piston-shaped member.

The present invention further includes a pressure receiving surface interposed between the receiving member and the urging member and movably guided in the opening / closing direction to receive the same pressure as the opening pressure receiving surface. A moving receiving portion 9 for generating the urging force of the urging means when moved to a position, and a positioning portion 17 provided on the main body so as to stop the moving moving receiving portion at the predetermined position. Is characterized by.

Further, the present invention is characterized in that the size of the valve seat and the size of the open pressure receiving surface are the same.

Further, according to the present invention, there is provided an inert gas cylinder 100 for storing an inert gas for fire extinguishing and the above-mentioned rapid opening pressure regulating valve, wherein the inlet of the main body is the inert gas cylinder 1
00 and a line 10 for guiding the inert gas from the outlet of the quick opening pressure regulating valve to the fire extinguishing compartment.
The fire extinguishing device is characterized by including 5, 109.

Further, the present invention is a high-pressure gas cylinder device, wherein the high-pressure gas cylinder is fitted with the inlet of the main body of the rapid opening pressure regulating valve.

The present invention also provides a fluid source 10 for supplying a fluid.
0, and the rapid opening pressure regulating valve described above, wherein the inlet of the main body includes a rapid opening pressure regulating valve provided in a fluid source.

[0012]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 shows an example of the overall structure of a rapid opening pressure regulating valve to which the present invention is applied. The quick opening pressure regulating valve includes a main body 1, a valve body member 2, a through hole 23 as a passage provided in the valve body member 2 in this example, a spring receiver 3 as a receiving member, a spring 4 as a biasing member, and a sealing member. It has a sealing plate mechanism 5 as a pressure means, a valve operating mechanism 6 as a sealing pressure releasing means, and the like.

The main body 1 has an inlet nozzle portion 11 which forms an inlet 11a and an outlet 12a for, for example, high pressure nitrogen as a fluid.
And an outlet nozzle portion 12, a valve seat 13 and the like. The inlet nozzle portion 11 is provided with a screw 11b for mounting on the high pressure nitrogen cylinder 100 as a rapid opening pressure regulating valve 101 as shown in a schematic view in FIG. 5, and a reinforcing ring 11c is screwed therein. Has been. The outlet nozzle portion 12 is provided with a screw 12b for mounting the pipe of the nitrogen extinguishing source line 105 shown in FIG. 5, for example. Body 1
Although not shown in the figure, a pressure gauge, a seat for a cylinder safety valve, and the like can be appropriately provided as necessary.

The valve body member 2 is provided with a cap 21 and a valve body 22 as a valve body portion which is opened and closed by coming into contact with and separating from the valve seat 13, the above-mentioned through hole 23, a closed pressure receiving surface 24, an open pressure receiving surface 25 and the like. , The valve opening / closing direction is guided by the main body 1 so as to be movable in the directions shown by the up and down arrows ZZ ′ in the drawing. In this example, the conduction holes 23 are opened at the ends in the Z ′ and Z directions as one end side and the other end side, and one end side is provided so as to communicate with the inlet 11a. The closed pressure receiving surface 24 is the outlet 12
It conducts to a and receives pressure in the Z direction, which is the valve closing direction. For this reason, an O-ring 7 for pressure sealing is provided on the guide surface on which the valve body member 2 is guided by the main body 1. The open pressure receiving surface 25 is formed at the end in the Z direction and receives pressure in the direction of the arrow Z ′, which is the opening direction.

In the present example, the spring receiver 3 is placed on the outside of the upper end of the main body 1 and mounted by being screwed into it, and supports the reaction force of the spring 4. An O-ring 8 seals between the upper portion of the valve member 2 and the spring receiver 4 so that the valve member 2 can slide in an airtight state. The upper end of the main body 1 may have a large diameter, and the spring receiver 3 may be screwed into the inside thereof. The spring 4 is interposed between the spring receiving portion 26 of the valve body member 2 and the spring receiver 3, and biases the valve body member 2 in the Z ′ direction.

As shown in FIG. 3, the sealing mechanism 5 has a threaded ring 51, a sealing plate 52 made of, for example, a thin stainless steel plate as a sealing member, and a threaded ring 51 for pressing the valve body member. Seal plate 5 between the upper edge of 2 and
It is composed of packings 53, 54, and the like that sandwich 2 between them. Thereby, the sealing plate 52 closes the conduction hole 23 in the Z direction. In this example, the upper end of the valve body member 2 is cut into a concave shape and the sealing plate 52 and the threaded ring 51 are mounted therein. However, a cap for covering the upper end of the valve body member 2 with the threaded ring 51 The sealing plate 52 is replaced by the valve member 2
It may be attached to the upper end of the.

The valve actuating mechanism 6 is mounted by screwing into a cylinder portion 31 extending above the spring receiver 3, and when actuated, the needle plate 65 is opened by breaking through the sealing plate 52 with the tip 65a of the needle member 65, and a through hole. It is formed so that the pressure inside 23 can be supplied to the open pressure receiving surface 25. In this example, the valve actuating mechanism 6 is attached to the main body 1 via the spring receiver 3, but the upper end of the main body 1 is extended outside the spring receiver 3 so as to extend upward to directly connect the valve to the main body 1. The actuating mechanism 6 may be attached.

FIG. 2 shows an example of the structure of the valve operating mechanism. The valve actuation mechanism 6 includes an outer cylinder 6 to which a working gas inlet 61a is attached.
1, an inner cylinder 62 inserted therein, a cover 63 screwed into the inner cylinder 62 so as to close the upper end of the inner cylinder 62 with a hole formed in the central portion, and slide into the inner cylinder 62. The actuating ring 64 which is inserted as much as possible and whose upper position in the counter-actuating direction is restricted at the tip end of the cover 63, the needle member 65 mounted on the actuating ring 64, and the needle portion provided as opposed to the sealing plate 52. A tip 65a, a spring 66 for urging the actuation ring 64 upward in the anti-acting direction, a lot 67 with a ring inserted in a hole of the cover 63, a cap 68 for operating the lot 67, and an interposing between this and the cover 63. Equipped rod 6
It is composed of a sandwich plate 69 for holding 7 in position, a pin 69a for sealing it, a chain 69b for locking it, and a screw 70 for attaching it. An O-ring for sealing is provided at a required position.

In such a structure, the operating ring 64
Receives the pressure of the high-pressure CO ₂ start-up gas line 104 shown in FIG. 5 as the fluid pressure, so that the tip 65 a penetrates the sealing plate 52, and the tip 65 is inserted through the needle member 65.
It corresponds to a piston-shaped member that biases a. Also, rod 6
7, the cap 68, the sandwiching plate 69, and the like constitute an operating portion formed so as to bias the actuation ring 64.

FIG. 4 is an explanatory view of the dimensional relationship of the valve body member 2 of the rapid opening pressure regulating valve constructed as described above and the pressure regulating function thereby. In this figure, the sealing plate 52 shown in FIG.
Has been broken, and the conduction hole 23 makes conduction between the upper and lower sides, and the inlet pressure P ₁ is applied to the open pressure receiving surface 25.

The valve body member 2 has a center diameter d _{3 of} a contact portion of the valve seat 13 as a dimension of the valve seat 13 and an outer diameter d as a dimension of the closed pressure receiving surface 24 as dimensions of each portion related to the pressure adjusting function.
₅ and the outer diameter d ₄ as the dimension of the open pressure receiving surface 25. The spring force F shown in the drawings as the size of each part and the urging force.
Is defined as a relationship in which the pressure P _{2 at the} outlet 12a becomes equal to or lower than a predetermined pressure. It should be noted that d ₁ and d ₂ are the diameters of the through holes 23 on which the inlet pressure acts and the minimum diameter of the shaft portion of the valve body member 2 on which the outlet pressure acts, both of which are intermediately interposed.

To construct the above relationship, P
_It is necessary to determine the above dimensions so that the valve will be closed when ₂ becomes a predetermined pressure or more. Therefore, the pressure at the inlet 11a is set to P
Assuming that condition is ₁ , the valve closing force is (π / 4) [P ₁ (d ₃ ² −d ₁ ² ) + P ₂ (d ₅ ² −d ₂ ² )] ≧ (π / 4) [ P ₁ (d ₄ ² −d ₁ ² ) + P ₂ (d ₃ ² −d ₂ ² )] + F (valve opening force) Therefore, (π / 4) [P ₁ (d ₃ ² −d ₄ ² ) + P ₂ (d ₅ ² −d ₃ ² )] ≧ F (1)

The left side of this equation is the total valve closing force due to pressure, and the right side is the valve opening force due to spring force. According to this equation, P ₁ is constant and F becomes a constant force at constant elongation when the spring constant is fixed. Therefore, if d ₅ is made larger than d ₃ , the valve closes when P ₂ becomes large. Power increases. Therefore, if the dimensions and F are defined by the relationship as shown in the above equation, when the outlet pressure P ₂ exceeds a certain value, the valve closing force due to the pressure becomes larger than the spring force and the valve closes, and P ₂ is further P ₁ Therefore, the outlet pressure P ₂ can be limited to the target constant pressure or less.

[0024] In this embodiment, further, since the a dimension _{d 4} dimensions _{d 3} and the open pressure receiving surface of the valve seat to the same, the above formula, ([pi / 4) _[P 2 ^_(d 5 2 -d ₃ ² )] ≧ F (2) With this configuration, by setting only d ₅ , d ₃ and F, the outlet pressure can be limited to the target predetermined pressure or lower. Therefore, the valve design is facilitated. Further, since the outlet pressure can be limited regardless of the inlet pressure, it is possible to prevent the backflow of the fluid to the inlet side even if the inlet pressure drops and the outlet pressure rises for some reason. Furthermore, since there are few parts related to pressure adjustment, the stability of operation is high and the outlet pressure can be reliably limited,
Improves valve reliability.

In FIG. 4, when the sealing plate 52 is not open, the inlet pressure P ₁ is not applied to the open pressure receiving portion 25, and the open pressure receiving portion 25 is in the atmospheric pressure state. Therefore, according to the equation (1), d ₄ =
Since the state becomes 0, the valve closing force becomes large enough to ensure that the valve remains closed. At this time, the outlet pressure is naturally atmospheric pressure.

On the other hand, if the sealing plate 52 is broken in this state,
In formula (1) or formula (2), P ₁Is more than atmospheric pressure
If it is large, P_TwoCan be regarded as almost 0, so d_ThreeAnd d
_FourIs the same as or d_FourAnd d_ThreeThe difference with
If so, almost only the spring force F acts as the valve opening / closing force.
Therefore, the valve is surely opened. And outlet pressure
Remains open until the pressure rises above the specified pressure.
It In this case, if the valve opening force is large enough,
Since it is in the open state, the flow is controlled by the opening / closing mechanism and the pressure adjusting mechanism.
There is no increase in body resistance.

The rapid opening pressure regulating valve shown in FIG. 1 as described above.
Is simple in construction and reliable in operation. Figure 5
Is an example of a device to which the rapid opening pressure regulating valve of the present invention is applied.
A schematic system of a nitrogen fire extinguisher is shown. Nitrogen fire extinguisher
150kgf / cm at 40 ° C ^TwoUntil the pressure is about G
Nitrogen cylinder 100 filled with nitrogen pressurized by
The rapid opening pressure regulating valve 101 of the present invention mounted on the
110 kgf / cm at ° C^TwoFor starting with a pressure of about G
CO_TwoCylinder 102, the valve actuator of FIG.
Solenoid instead of high pressure inert gas with similar structure
Starter 103 and start-up gas line 10 that operate at
4, extinguishing source line 105, safety device 106, source valve 10
7. Select valve 108 for selecting fire extinguishing compartment, individual fire extinguishing
Consists of line 109, fire extinguishing section 110, etc.
It The quick opening pressure regulator is d_Three= D_FourAnd, for example, P_Two=
110 kgf / cm^TwoAs G, based on equation (2),       (Π / 4) [110 (d₅ ^Two-D_Three ^Two)] = F (3) Designed for relationships. Where d₅And d_ThreeThe unit of is c
The units of m and F are kgf.

The rapid opening pressure regulating valve having the above construction operates as follows. Nitrogen cylinder 10 is used for the quick release pressure regulating valve.
The inlet pressure P _{1 of} 0 to about 150 kgf / cm ² G is applied, and the sealing plate 52 is not broken. Therefore, in the formula (1), a large valve closing force of P ₁ d ₃ ² π / 4 acts with d ₄ = 0, and the valve is reliably closed. In this state, for example, when a fire occurs in any of the fire extinguishing compartments, the starter 103 is operated, and C
From the O ₂ cylinder 102 through the starting gas line 104,
A pressure of 110 kg is applied to the valve operating mechanism 6 of the quick opening pressure regulating valve 101.
A working gas of about f / cm ² G is introduced.

In the valve operating mechanism 6, the starting gas is supplied to the outer cylinder 61,
It is introduced into the upper part of the operating ring 64 through the through holes formed in the inner cylinder 62 and the cover 63, and a gas pressure is generated between this and the rod 67, and the operating ring 64 and the needle member 65 are The tip 65a is pushed down, and the sealing plate 5
2 is opened and opened, and nitrogen is immediately introduced from the inlet 11a through the conduction hole 23 into the upper end portion, and the pressure P ₁ is applied to the open pressure receiving surface 25 formed between the inner cylinder 62 and the spring receiver 3. . On the other hand, since d ₃ and d ₄ are both effective, the P ₁ part of the equation (1) becomes 0, and the outlet pressure P ₂ is also atmospheric pressure, the valve opening / closing force due to the pressure is almost eliminated, and the spring force F causes The valve body member 2 is surely pushed down, and the valve opens instantly. As a result, nitrogen is swiftly flown below the fire extinguishing source line 105, and the fire extinguishing section is filled up with the effect of extinguishing the fire.

On the other hand, when the valve is opened, for example, the original valve 10
Extinguish the fire if 7 or the selection valve 108 is closed.
The pressure of the source line 105 rises, resulting in rapid opening pressure regulation.
The pressure at the outlet 12a of the valve 101 increases. However, this
Pressure of 110kgf / cm ^TwoThen, according to formula (3)
Because the dimensions and spring force are determined by
Force and valve opening / closing force are balanced, and pressure is 110 kgf / cm
^TwoThe valve closing force due to pressure exceeds the spring force and the valve
Will close. As a result, 110 kgf / cm^TwoG or above
Excessive rise in outlet pressure is prevented.

FIG. 6 shows a structural example of another rapid opening pressure regulating valve to which the present invention is applied. This rapid opening pressure regulating valve is mainly provided in the valve body member 2 as a passage for connecting between one end side communicating with the inlet 11a of the valve body member 2 and the other end side communicating with the open pressure receiving surface 25, as compared with the valve shown in FIG. Instead of the provided conduction hole 23, a lateral conduction hole 14 and a side conduction hole 15 as passages provided in the main body 1 are provided. The space between the two conduction holes is closed by a sealing plate 52 as in the case of FIG. In this example, the sealing plate 52 is pressed and supported by the inner cylinder 62 of the valve actuating mechanism 6, and the conduction holes 14 and 15 are electrically connected by the hole 62a formed in the inner cylinder 62, and the cover 3 '. The pressure receiving surface 25 is closed at. Also, the spring receiver 3
Are screwed onto the inner surface of the body 1. The reinforcing ring 11c of FIG. 1 is not used.

Also in this example, just as in the case of FIG. 1, when the valve operating mechanism 6 is actuated and the sealing plate 52 is broken, the inlet 11 is opened.
The gas pressure of a is the horizontal conduction hole 14, the sealing plate 52, and the hole 62 in order.
The valve body member 2 can be actuated by the force of the spring 4 to instantly act on the open pressure-receiving surface 25 via the side conduction hole 15a, and the valve can be opened. When the pressure on the outlet 12a side becomes equal to or higher than the predetermined pressure when the valve is opened, the pressure on the closed pressure receiving surface 24 increases,
The valve closing force becomes greater than the valve opening force, closing the valve and preventing further pressure rise. According to the quick opening pressure regulating valve of the present example, the valve actuating mechanism 6 can be arranged in the direction perpendicular to the valve body member 2, so that there is an advantage that the overall shape of the quick opening pressure regulating valve can be miniaturized.

As described above, the quick opening pressure regulating valve normally operates by the gas pressure from the starting gas line 104, but a failure or the like occurs in the starting system, and the working gas is fed to the valve operating mechanism 6 of the quick opening pressure regulating valve. When not supplied, the valve can be opened by direct manual operation. At this time, the sealing pin 69a is pulled out, the chain locking side of the sandwiching plate 69 is held and pulled out, and the cap 68 is pushed down to push down the operating ring 64 via the rod 67 and lower the tip 65a of the needle member. The sealing plate 52 can be broken. As a result, even if there is a failure in the starter system, nitrogen can be immediately and reliably supplied by hand, and fire extinguishing work can be performed.

According to such a quick opening pressure regulating valve, when the fire is to be extinguished, the valve can be opened rapidly and reliably to supply nitrogen, and the pressure on the outlet side is set to a predetermined pressure, for example 110.
It can be limited to kgf / cm ² G or less. Therefore, the pressure resistance of all the extinguishing systems such as the piping and valves on the outlet side is the same as that of the conventional CO ₂ extinguishing system of 110 kgf / cm ²
There is no need to raise it above G. As a result, for example, 150 kgf / cm ² G without increasing equipment cost
It becomes possible to use a nitrogen fire extinguisher having a large fire extinguishing ability.

As a nitrogen fire extinguisher, for example, 20
A pressure of about 0 kgf / cm ² G can also be used. In addition to the nitrogen fire extinguisher, the quick release pressure regulating valve can be widely used for other inert gas fire extinguishers, high pressure gas cylinders and the like. 7 and 8 show still another structural example of the rapid opening pressure regulating valve. The quick opening pressure regulating valve of this example includes a main body 1,
The inner body 10, the valve body member 2, the lateral conduction hole 14 as a passage, the communication conduction hole 16, and the upper conduction hole 23, which are screwed inward and are configured to be integrated with the main body 1 so as to function as the main body. ′, A spring receiver 3 as a receiving member and a moving spring receiver 9 which is also a moving receiving portion, a spring 4 as an urging member, a sealing plate mechanism 5 whose details are also shown in FIG. As means, it has the valve actuation mechanism 6 and the positioning portion 17 shown in FIG. In the drawing, the state where the moving spring receiver 9 is in the upper position and the valve body member 2 closes the valve body 22 is shown on the right side of the center line C, and the spring body 9 is in the lower position and the valve body 22 is The open state is shown on the left.

The main body 1 is similar to that of FIG. 1 and has an inlet nozzle portion 11 forming an inlet 11a and an outlet 12a for high pressure nitrogen.
And an outlet nozzle portion 12 and the like. In addition, in the valve of this example, the middle body 10 is provided inside the main body 1 in terms of manufacturability and the like to support and guide the valve body member 2 and the like, and the lower end thereof serves as the valve seat 13 portion. However, it goes without saying that the middle body 10 and the main body may be the same member as shown in FIG. The main body 1 is provided with a pressure gauge seat, a pressure restricting needle valve seat, a safety stopper seat, etc., if necessary, but they are not shown in the same manner as in FIG.

The valve body member 2 also has a structure similar to that of FIG. In FIG. 1, the conduction hole 23 is directly conducted from one end side to the other end side through the sealing plate 52, but in the present example, as described above, the lateral conduction hole 14, the sealing plate 52, and the communication conduction side. It conducts through the hole 16. However, it goes without saying that the passage and the sealing plate mechanism as shown in FIG. 1 can also be adopted for the valve of the structure of this example.

In the present example, the spring receiver 3 is placed on the outside of the upper end of the middle case 10 and is attached thereto by screwing, and supports the reaction force of the spring 4 via the moving spring receiver 9. There is. That is, as will be described later, after the sealing plate 52 is opened, the introduced pressure on the valve inlet side is received in the space between the moving spring receiver 9 and the moving spring receiver to generate a pressure, and The force of the spring 4 is supported via 9. On the other hand, before opening, as shown on the right side of the center line C in FIGS. 8 and 9, the upper end of the moving spring receiver 9 is received so that the spring 4 is almost completely extended. In addition,
In this case, a gap may be formed between the upper end of the movable spring receiver 9 and the contact surface of the spring receiver 3, or conversely, the contact may be such that some spring force remains.

A necessary part is sealed by an O-ring 8 so that the valve member 2 can slide in an airtight state. In this example, the moving spring receiver 9 is guided by the middle barrel 10, but the upper end of the middle barrel 10 is made larger in diameter and the spring receiver 3 is screwed into the inside of the middle barrel 10 so that the moving spring receiver 9 can move the moving spring receiver 9 in place. It may have a structure for guiding. The spring 4 is interposed between the moving spring receiver 3 and the spring receiving portion 26 of the valve body member 2, and biases the valve body member 2 in the Z'direction as in FIG.

The movable spring receiver 9 is interposed between the spring receiver 3 and the spring 4, and in this embodiment, is guided by the intermediate body 10 integrated with the main body 1 so as to be movable in the opening / closing direction Z-Z 'to open pressure receiving. It has a pressure receiving surface 9a that receives the same pressure as the surface 25, and when it moves to a lower position L which is a predetermined position in the opening direction of Z ', it is stopped by the positioning portion 17 and the spring 4 generates an urging force F.
That is, the moving spring receiver 9 is inside the spring receiver 3 and newly operates as a substantial spring receiver. It should be noted that the positioning portion 17 may be formed by screwing the positioning portion 17, or by preparing a thin adjustment member to be placed thereon.
The position of may be adjustable.

The lateral conduction hole 14, the communication conduction hole 16 and the upper conduction hole 23 'are the nitrogen inlet 11 of the valve body member 2 which is one end side.
It is a passage that connects between the a side and the open pressure receiving surface 25 at the upper end of the valve body member 2, which is the other end side. Communication hole 1 as in this example
By using the upper conducting hole 23 'provided in the valve body member 2 by providing 6 there is no need for a separate space for the passage in the upper part of the valve as in FIG. The diameter can be reduced. However, it is also possible to adopt a passage as shown in FIG.

FIG. 9A shows the structure of the sealing mechanism 5. The present example is almost similar to that shown in FIG. 3, but in the present example, the gas supply port 55 is provided at the tip portion of the threaded ring 51. A screw 56 is provided on the outside of the nozzle portion that constitutes the sealing mechanism 5. Therefore, FIG.
A screw 62a is cut inside the tip portion of the inner cylinder 62 of the valve actuating mechanism 6 shown in (b), and this screw is screwed onto the screw 56 of the nozzle portion from the outside. However, this portion may have a screwing structure as shown in FIG. The other structure of the valve actuating mechanism 6 is exactly the same as that of FIG.

FIG. 10 shows the relationship of the pressure applied to the valve body 2 of the quick release pressure regulating valve of FIGS. 7 and 8. FIG. 10 (a) is a view corresponding to FIG. , (B) are in a state before opening. When the sealing plate 52 is broken, in the rapid opening pressure regulating valve of this example, the gas at the inlet 11a is sequentially transferred to the lateral conduction hole 1
4, air openings 55, contact the conductive hole 16, via the upper conducting port 23 'flows into an open receiving surface 25 and the pressure receiving surface 9a of the movable spring receiver 9, the pressure P ₁ on these, as shown in (a) Works. As a result, on the pressure receiving surface 9a side, the pressure P of this portion is
_{When the} moving spring receiver 9 is pushed down by ₁ and moves down to a predetermined position L while compressing the spring 4, it hits the positioning portion 17 of the middle case 10 and stops. At this time, the spring 4 compressed by the moving spring receiver 9 causes the spring force F in the opening direction to act on the valve body 2. The action of the force exerted on the open pressure receiving surface 25 by the spring force F and the pressure P ₁ and the overall force relation exerted on the valve body member 2 including these are as described in FIG. 4.
Also in the valve of this example, the pressure on the outlet side is controlled by the equations (1) and (2).

Before opening the sealing plate 52 shown in (b),
When the pressure of the nitrogen cylinder 100 is high, the pressure of P ₁ is high, while the valve seat 13 is in contact with the valve body 22 and the valve is closed, so the pressure on the outlet 12a side is low atmospheric pressure P ₀ . . As a result, as shown in the previous equation (1), the pressure P ₁
Since the valve closing force by the spring is sufficiently larger than the valve opening force F by the spring, the valve can be closed. However, when P ₁ becomes a certain pressure or less, in the case of the valve of FIG. 1, the valve closing force by this becomes smaller than the valve opening force by the spring force F, and the valve opens. For example, as described above, P ₁ is 150 kgf
/ According cm ² and a _{P 2} to the spring force F at the time of controlling the 110 kgf / cm ² or less of the pressure, _{P 1} is at maximum one-third
At about 50 kgf / cm ² , the valve opening force by the spring force F becomes larger than the valve closing force by P ₁ . And the valve will open unnecessarily.

However, according to the rapid opening pressure regulating valve of this example, as shown in (b), the force acting on the pressure receiving surface 9a of the moving spring receiver 9 becomes the atmospheric pressure P ₀ , and the force for compressing the spring 4 is exerted. Is released, and the moving spring receiver 9 rises from the position L where the spring force F is generated to the position H where it becomes F ₀ of almost zero. As a result, the force of the spring 4 hardly acts on the spring receiving portion 26 of the valve body 2, and the closed state of the valve is maintained unless the sealing plate is broken. In addition, P ₀ in the figure,
The arrow F ₀ indicates the direction of pressure and force, and the magnitude is almost 0 as described above.

According to such a quick release pressure regulating valve, it is possible to prevent the outflow of nitrogen to the outlet line even when the pressure of the nitrogen cylinder 100 drops. As shown in FIG. 5, even if the valve is opened and nitrogen enters the outlet line, in the fire extinguishing system, unnecessary extinguishing of the extinguishing gas into the extinguishing area is prevented by the main valve 107 and the selection valve 108. So there is no danger. Further, according to the valve of this example, even when the nitrogen cylinder 100 is filled with nitrogen at the time of shipment from the factory, the valve closes as soon as the pressure inside the cylinder rises due to the resistance of the valve, so that the outlet nozzle portion 12 is released. Nitrogen can be filled in the opened state or only with the cap slightly covered, and the handleability of the valve can be improved.

[0047]

As described above, according to the present invention, the quick opening pressure regulating valve is provided with the main body, the valve body member, the receiving member, the urging member,
A combination of a sealing pressure means and a sealing pressure releasing means,
The valve body member or the main body is provided with a passage for connecting between one end side and the other end side of the valve body member, and one end side thereof is connected to the main body inlet and a passage to the other end side is formed by the sealing member of the sealing means. A pressure receiving area that receives the fluid pressure of the valve body part that is blocked and seated on the valve seat of the main body,
The pressure receiving area of the closed pressure receiving surface of the valve body member, the pressure receiving area of the open pressure receiving surface located on the other end side, and the opening urging force of the urging member are conducted between the one end side and the other end side of the passage to open the pressure receiving surface. When the pressure of the outlet exceeds the specified pressure while the pressure of the valve is open, the valve closing force that closes the valve body is larger than the biasing force and the valve body is closed. Since the pressure is set to be equal to or lower than the predetermined pressure, the valve body member opens and closes as follows according to each condition.

First, when the sealing means does not operate and the other end side is closed by the sealing member, the open pressure receiving surface does not operate and therefore the force of the inlet pressure acting on the valve member in the closing direction is applied. It becomes larger than the biasing force of the member, and the closed state of the valve body member is maintained.

Next, when the pressure-sealing means is activated, the pressure-sealing member that seals the passage to the other end is opened, and the inlet pressure is applied to the open pressure-receiving surface, which causes the closing pressure of the valve body member inlet portion. The valve member can be surely opened by releasing or reducing it, and making the urging force of the urging member effective.

Further, when the outlet pressure becomes large in this state, the pressure on the closed pressure receiving surface becomes larger than the urging force of the urging member, so that the valve can be closed and the rise of the outlet pressure above a certain level can be restricted. As a result, even if the fluid inlet pressure is high, the outlet pressure can be made equal to or lower than the predetermined pressure, and the pressure resistance of the pipes and valves can be reduced to that pressure. And, for example,
Maintaining a value of 110 kgf / cm ² G as the outlet pressure corresponding to the design pressure of the conventional fire extinguishing system, that is, 150 kgf / cm ² without increasing the cost of the piping system and the like.
It is possible to adopt a nitrogen fire extinguisher having a high fire extinguishing ability at a high pressure of G or higher.

According to the present invention, as the sealing pressure releasing means, the needle portion provided so as to face the sealing member is attached to the piston-like member which is operated by the fluid pressure and can be operated by the operating portion. In addition, the sealing member can be remotely operated by the fluid pressure, and even if a failure occurs in the fluid pressure line, the sealing member can be opened and closed by manual operation on the machine side, and the safety of the device can be improved.

According to the present invention, the moving receiving portion having the pressure receiving surface for receiving the same pressure as the open pressure receiving surface is provided between the receiving member and the biasing member, and the moving receiving portion is guided so as to be movable in the opening / closing direction and is sealed. When the pressure is released, the pressure receiving surface receives the pressure and moves the moving receiving portion to a predetermined position in the opening direction, and the positioning portion is provided so as to stop at this position. The biasing force can be generated in the biasing member. As a result, the outlet pressure can be controlled to be equal to or lower than the predetermined pressure by the same operation as that of the first aspect of the invention.

On the other hand, when the sealing pressure is not released,
Since the pressure receiving surface does not receive the pressure, no force is generated to move the movement receiving portion to the predetermined position, and the movement receiving portion receives the reaction force of the biasing member and freely moves in the direction opposite to the predetermined position. To do. As a result, the biasing force of the biasing member is not generated, and the valve body member is not biased in the opening direction by the biasing member. As a result, unnecessary opening of the valve due to the urging force of the urging member is prevented even when the fluid pressure on the inlet side decreases. Further, even when a gas for extinguishing a gas equipped with a quick opening pressure regulating valve is filled with the gas, the gas can be filled without completely closing the outlet side, so that the handling property of the device can be improved. it can.

In the present invention, since the size of the valve seat and the size of the open pressure receiving surface are the same, the opening / closing force of the valve body member is
It is determined by the outlet pressure, the size of the valve seat, the size of the closed pressure receiving surface, and the urging force of the urging member. Therefore, the valve can be easily designed. Further, since the outlet pressure can be limited regardless of the inlet pressure, it is possible to prevent the backflow of the fluid to the inlet side when the outlet pressure rises. Furthermore, since the portion related to the pressure adjustment is reduced, the operational stability of the valve is enhanced, the outlet pressure can be reliably limited, and the reliability of the valve can be improved.

Further, according to the present invention, since the fire extinguishing device, the high pressure gas cylinder device and the rapid fluid supplying device using the above-mentioned quick opening pressure regulating valve are realized, the fluid such as the inert gas for extinguishing the fire is rapidly supplied. In addition, the pressure of the fluid can be suppressed below a predetermined pressure.

[Brief description of drawings]

FIG. 1 is a vertical sectional view showing an example of the overall structure of a rapid opening pressure regulating valve to which the present invention is applied.

FIG. 2 shows an example of a valve operating mechanism of the rapid opening pressure regulating valve, (a) is a plan view and (b) is a longitudinal sectional view.

FIG. 3 is a partial cross-sectional view showing a structural example of a pressure sealing portion of the rapid opening pressure regulating valve.

FIG. 4 is an explanatory diagram of a relationship of forces applied to respective parts of the valve body member of the rapid opening pressure regulating valve.

FIG. 5 is a system diagram showing an example of a nitrogen fire extinguisher which is a device to which the rapid opening pressure regulating valve can be applied.

FIG. 6 is a vertical sectional view showing another example of the rapid opening pressure regulating valve to which the present invention is applied.

FIG. 7 is a vertical sectional view showing still another example of the rapid opening pressure regulating valve to which the present invention is applied.

FIG. 8 is a longitudinal sectional view of the valve in a different direction from the above.

9A is an enlarged sectional view of a sealing plate mechanism, and FIG. 9B is a sub-sectional view of a valve actuating mechanism for this mechanism.

FIG. 10 is an explanatory view of a relationship of forces applied to respective parts of the valve body member of the rapid opening pressure regulating valve, (a) showing a state after opening and (b) showing a state before opening.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 main body 2 valve body member 3 spring receiver (receiving member) 4 spring (biasing member) 5 sealing plate mechanism (sealing means) 6 valve operating mechanism (sealing pressure releasing means) 9 moving spring receiver (receiving portion, moving receiving portion) ) 9a Pressure receiving surface 11a Nitrogen inlet (fluid inlet) 12a Nitrogen outlet (fluid outlet) 13 Valve seat 14 Lateral conduction hole (passage) 15 Side conduction hole (passage) 16 Communication conduction hole (passage) 17 Projecting surface (Positioning portion) 23 Conduction hole (passage) 23 'Upper conduction hole (passage) 24 Closed pressure receiving surface 25 Open pressure receiving surface 52 Sealing plate (sealing member) 64 Actuation ring (piston-like member) 65a Tip (needle portion) 67 Rod (Operation part) 68 Cap (operation part) 69 Clamp plate (operation part) d ₃ Center diameter of contact part of valve seat (dimension of valve seat) d ₅ Outer diameter (dimension of closed pressure receiving surface) d ₄ Outer diameter (open) dimension) F spring force of the pressure receiving surface (urging force) pressure _{P 2} outlet L under position (predetermined position) Z opening direction Z 'closing direction

─────────────────────────────────────────────────── ─── Continuation of front page (51) Int.Cl. ⁷ Identification code FI theme code (reference) F17C 13/06 301 F17C 13/06 301A G05D 16/10 G05D 16/10 J F term (reference) 2E189 BA03 BB06 BB08 BC01 BC08 MA07 MB06 3E072 AA01 DB06 3H056 AA01 BB32 CA02 CB02 CC16 CD06 CE03 DD08 EE10 GG03 GG09 GG11 5H316 AA20 BB01 DD17 EE02 EE10 FF02 GG01 JJ01 JJ11 KK02 LL10

Claims (8)

[Claims] 1. A main body having a fluid inlet / outlet and a valve seat, and a valve body portion having one end side and the other end side, which is opened and closed by contacting with and separating from the valve seat at the one end side and the outlet. A valve body member that is provided with a closed pressure receiving surface 24 that is conductive and receives a pressure in the closing direction and an open pressure receiving surface 25 that is formed on the other end side and receives the pressure in the opening direction, and is guided to the main body so as to be movable in the opening and closing directions; A sealing means provided with a passage for connecting between the one end side and the other end side, an urging member for urging the valve body member in the opening direction, and a sealing plate attached so as to close the passage. And a sealing pressure releasing means attached to the main body, the sealing pressure releasing means being formed so as to break the sealing plate when actuated to supply the pressure in the passage to the open pressure receiving surface, and seated on the valve seat. The pressure receiving area of the valve body for receiving the fluid pressure, the pressure receiving area of the closed pressure receiving surface, and the open pressure receiving area. The pressure receiving area of the pressure surface and the urging force of the urging member are such that the one end side and the other end side of the passage are electrically connected and the open pressure receiving surface receives the pressure in the opening direction to open the valve body portion. In addition, when the pressure at the outlet exceeds a predetermined pressure, the valve closing force for closing the valve body portion is larger than the urging force and the valve body portion is closed. A rapid opening pressure regulating valve. 2. A body having a fluid inlet / outlet and a valve seat, and a valve body portion having one end side and the other end side and being opened / closed by contacting with / separating from the valve seat at the one end side and the outlet. A valve body member that is provided with a closed pressure receiving surface 24 that is conductive and receives a pressure in the closing direction and an open pressure receiving surface 25 that is formed on the other end side and receives the pressure in the opening direction, and is guided to the main body so as to be movable in the opening and closing directions; A sealing pressure provided with a passage for connecting between the one end side and the other end side, an urging member for urging the valve body member in the opening direction, and a sealing member attached so as to close the passage. Means, and a sealing pressure releasing means attached to the main body, formed so as to supply the pressure in the passage to the open pressure receiving surface while keeping the sealing member open when actuated, A pressure receiving area for receiving the fluid pressure of the valve body seated on the valve seat, and a closed pressure receiving surface The pressure receiving area, the pressure receiving area of the open pressure receiving surface, and the urging force of the urging member are electrically connected between the one end side and the other end side of the passage so that the open pressure receiving surface receives the pressure in the opening direction and the valve is opened. When the body portion opens and the pressure at the outlet exceeds a predetermined pressure, the valve closing force for closing the valve body portion is larger than the urging force and the valve body portion is closed. A rapid opening pressure regulating valve characterized by being provided. 3. The sealing member is a sealing plate, and the sealing pressure releasing means includes a needle portion provided so as to face the sealing plate, and the needle portion receives the fluid pressure so that the needle portion has the sealing plate. 3. The quick opening pressure regulating valve according to claim 2, further comprising: a piston-shaped member for urging the needle portion so as to penetrate the needle, and an operation portion formed so as to urge the piston-shaped member. . 4. A pressure receiving surface, which is interposed between the receiving member and the biasing member, is movably guided in the opening / closing direction and receives the same pressure as the open pressure receiving surface, and moves to a predetermined position in the opening direction. And a positioning portion 17 provided on the main body so as to stop the movement movement receiving portion at the predetermined position. The rapid opening pressure regulating valve according to any one of claims 1 to 3. 5. The one of claims 1 to 4, wherein the size of the valve seat and the size of the open pressure receiving surface are the same.
Quick release pressure regulating valve described in. 6. The inert gas cylinder 100 for storing an inert gas for extinguishing a fire, and the rapid opening pressure regulating valve according to claim 1, wherein the inlet of the main body is an inert gas. Active gas cylinder 1
Fire extinguishing device, comprising: a rapid opening pressure regulating valve mounted on the valve 00; and lines 105 and 109 for guiding an inert gas from the outlet of the rapid opening pressure regulating valve to the fire extinguishing section. 7. A high-pressure gas cylinder device, characterized in that the inlet of the main body of the rapid opening pressure regulating valve according to any one of claims 1 to 6 is mounted on the high-pressure gas cylinder. 8. A fluid source 100 for supplying a fluid, and the rapid opening pressure regulating valve according to claim 1, wherein the inlet of the main body is provided in the fluid source. A rapid fluid supply device comprising a pressure regulating valve.