JP2006017302A - Quick opening pressure control valve and fire extinguishing device using the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a quick opening pressure control valve of simple structure capable of opening quickly while limiting secondary side pressure to a target pressure or less. <P>SOLUTION: This quick opening pressure control valve comprises a main body 1, a valve element member 2, a spring receiver 3, a spring 4, a pressure-sealing mechanism 5 and a valve operating mechanism 6, and a sharp end 65 breaks a seal plate 52 with operation of the valve operating mechanism 6, and applies the pressure of an inlet 11a to an open pressure receiver surface 25. In this condition, the diameter of an abutment surface of a valve seat 13, pressure receiving area of a closed pressure receiver surface 24 and the open pressure receiver surface 25, and force of the spring 4 are set to satisfy the relation that pressure in an outlet 12a becomes the predetermined pressure or less. When the valve operating mechanism 6 is not operated, force by the inlet pressure applying to a valve cap 22 closes the valve, resisting the spring 4. When the valve operating mechanism 6 is operated, force applying to the open pressure receiver surface 25 offsets the force applied to the valve cap 22, and the valve is opened by the spring force. When outlet pressure rises, force applying to the closed pressure receiver surface 24 closes the valve, resisting the spring force, and limits the outlet pressure in a certain range. With this structure, it is unnecessary to raise withstand pressure of a tube and the valve. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a quick-open pressure regulating valve mounted on, for example, an inert gas cylinder for high-pressure fire extinguishment that can be quickly opened and to limit the maximum pressure on the secondary side, a fire extinguishing device using the same, a high-pressure gas cylinder device, and a fluid It relates to a rapid feeding device.

For example, as a valve with a CO ₂ cylinder used in a CO ₂ fire extinguisher, a type that can be quickly opened by introducing a high-pressure gas for start-up is generally employed. Can not be restricted. On the other hand, as a valve provided with a pressure reducing mechanism, various cylinder valves with a pressure reducing valve that are opened and closed by turning a handle have been proposed (see, for example, Patent Document 1). However, such valves are not designed to open quickly.

JP-A-3-219172

  The present invention solves the above-mentioned problems in the prior art, and can be rapidly opened and a quick-opening pressure regulating valve having a simple structure capable of limiting the secondary side pressure to a target pressure or less, and a fire extinguishing apparatus using the same It is another object of the present invention to provide a high-pressure gas cylinder device and a fluid rapid supply device.

The present invention includes a body having fluid inlets and outlets and a valve seat;
A valve body pressed against the valve seat of the main body by the pressure of the fluid in the cylinder,
A passage for guiding the fluid in the cylinder through the sealing plate so that the valve body portion acts in a direction away from the valve seat;
An urging member for applying a spring force in a direction in which the valve body part moves away from the valve seat, and controlling the secondary side pressure using the spring force;
A quick-opening pressure regulating valve including a sealing pressure releasing means for breaking the sealing plate.

The present invention also includes a main body having fluid inlets and outlets and a valve seat;
A valve body that is pressed by the pressure of the fluid in the cylinder toward the valve seat of the main body,
A biasing member that applies a spring force to the valve body in the opening direction;
A passage for guiding the fluid in the cylinder so that the valve body receives pressure in the opening direction;
A sealing plate attached to block the passage;
Sealing pressure release means for breaking the sealing plate,
The spring force of the urging member is a quick opening pressure regulating valve characterized in that the valve body is opened when the sealing plate is broken by the sealing pressure releasing means.

  According to the present invention, the sealing pressure release means biases the needle portion so that the needle portion penetrates the sealing plate by receiving a fluid pressure and a needle portion provided to face the sealing plate. And a manipulation part formed so as to be able to bias the piston-like member.

The present invention also includes an inert gas cylinder 100 for storing an inert gas for fire extinguishing,
A rapid opening pressure regulating valve as described above, wherein the inlet of the body is attached to an inert gas cylinder 100;
A fire extinguishing apparatus comprising lines 105 and 109 for introducing an inert gas from an outlet of the quick opening pressure regulating valve to a fire extinguishing section.

The present invention also provides a high pressure gas cylinder,
The high-pressure gas cylinder apparatus is provided with the inlet of the main body of the rapid opening pressure regulating valve.

  As described above, according to the present invention, the quick opening pressure regulating valve is constituted by a combination of the main body, the valve body portion, the urging member, the sealing pressure means, and the sealing pressure release means, and the cylinder or the valve body portion has a cylinder. A passage for guiding the fluid in the inside is provided, and the passage is sealed by a sealing member of the sealing pressure means. When the sealing pressure member is opened by the sealing pressure release means and the fluid in the cylinder passes through the passage, the spring force of the biasing member Therefore, the secondary pressure is easily limited to a predetermined pressure or less because the valve body is configured to open, that is, the spring force of the urging member is applied in a direction away from the valve seat. be able to.

Thus, for example, it is limited to less than or equal to the conventional 110 kgf / cm ² G as an outlet pressure corresponding to the design pressure of the digestive system, i.e. without increasing the cost of the piping system and the like, 150 kgf / cm ² G of about or more Nitrogen fire extinguishing equipment with high pressure and high fire extinguishing ability can be adopted.

  Further, according to the present invention, as the sealing pressure release means, the needle portion provided so as to face the sealing pressure member is attached to the piston-like member that is operated by the fluid pressure, and this can be operated by the operation portion. The pressure member can be remotely operated by the fluid pressure, and even when a failure or the like occurs in the fluid pressure line, the sealing pressure member can be opened and closed by manual operation on the machine side, and the safety of the apparatus can be improved.

  Further, according to the present invention, since the fire extinguishing apparatus and the high-pressure gas cylinder apparatus using the aforementioned quick opening pressure regulating valve are realized, it is possible to quickly supply a fluid such as an inert gas for fire extinguishing, and The pressure can be suppressed below a predetermined pressure.

  FIG. 1 shows an example of the overall structure of a quick 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 conduction 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 an urging member, a seal It has a sealing plate mechanism 5 as pressure means, a valve operating mechanism 6 as sealing pressure release means, and the like.

  The main body 1 includes an inlet nozzle portion 11 and an outlet nozzle portion 12 that form an inlet 11a and an outlet 12a of, for example, high-pressure nitrogen as a fluid, a valve seat 13, and the like. For example, as schematically shown in FIG. 5, the inlet nozzle portion 11 includes a screw 11 b for mounting on a high-pressure nitrogen cylinder 100 as a quick opening pressure regulating valve 101, and a reinforcing ring 11 c is screwed into the inside. It is. The outlet nozzle unit 12 includes, for example, a screw 12b for mounting a pipe of the nitrogen fire extinguishing source line 105 shown in FIG. Although not shown, the main body 1 can be appropriately provided with a pressure gauge, a cylinder safety valve seat, or the like as required.

  The valve body member 2 includes a cap 21 and a valve body 22 as valve body parts that are opened and closed in contact with and away from the valve seat 13, the conduction hole 23, a closed pressure receiving surface 24, an open pressure receiving surface 25, and the like. It is guided by the main body 1 so as to be movable in the direction indicated by the up and down arrows ZZ ′ in the figure which is a direction. In this example, the conduction hole 23 is opened at one end side and the other end side at the ends in the Z ′ and Z directions, and one end side is provided so as to communicate with the inlet 11a. The closing pressure receiving surface 24 is electrically connected to the outlet 12a, and receives pressure in the Z direction, which is the valve closing direction, from here. For this reason, an O-ring 7 for pressure sealing is interposed 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 arrow Z ′ direction, which is the open direction.

  In this example, the spring receiver 3 is placed on the outer side of the upper end portion of the main body 1, and is attached to the spring receiver 3 by being screwed in to support the reaction force of the spring 4. Further, the O-ring 8 seals the upper part of the valve body member 2 and the spring receiver 4 so that the valve body member 2 can slide in an airtight state. In addition, the structure which makes the upper end part of the main body 1 large diameter, and screws the spring receiver 3 inside may be sufficient. 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 pressure mechanism 5 includes a threaded ring 51, a sealing plate 52 made of, for example, a thin stainless steel plate as a sealing pressure member, and an upper end of the valve body member 2 by being pressed by the threaded ring 51. Are formed by packings 53, 54, and the like that sandwich the sealing plate 52 therebetween. Thereby, the sealing plate 52 closes the conduction hole 23 in the Z direction. In this example, the upper end portion 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, but the cap covers the upper end of the valve body member 2 with the threaded ring 51. The sealing plate 52 may be attached to the upper end of the valve body member 2 in a formula.

  The valve operating mechanism 6 is attached to the cylinder portion 31 extending above the spring receiver 3 by screwing. When the valve operating mechanism 6 is operated, the valve operating mechanism 6 opens by breaking through the sealing plate 52 at the tip 65a of the needle member 65. It is formed so that pressure can be supplied to the open pressure surface 25. In this example, the valve operating mechanism 6 is attached to the main body 1 via the spring receiver 3. However, the upper end of the main body 1 is extended outwardly from the spring receiver 3 so that the valve 1 is directly connected to the main body 1. The operating mechanism 6 may be attached.

  FIG. 2 shows an example of the structure of the valve operating mechanism. The valve operating mechanism 6 includes an outer cylinder 61 fitted with a working gas inlet 61a, an inner cylinder 62 inserted therein, and a hole formed in the central portion so that the upper end of the inner cylinder 62 is closed. A cover 63 screwed in, an operating ring 64 which is slidably inserted into the inner cylinder 62 and whose upper position is restricted in the counter-acting direction at the tip of the cover 63, and the needle member mounted on the operating ring 64 65 and the tip 65a as a needle portion provided so as to face the sealing plate 52, a spring 66 for urging the operating ring 64 upward in the counter-acting direction, and a lot 67 with a ring inserted into the hole of the cover 63 The cap 68 for operation, the sandwiching plate 69 interposed between the cap 63 and the cover 63 and holding the position of the rod 67, the pin 69a for sealing the pin 69, and the chain 69b for locking, are attached. Screw 70 etc. Thus it is constructed. 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 activation gas line 104 shown in FIG. 5 as the fluid pressure, so that the tip 65a passes through the sealing plate 52 via the needle member 65. This corresponds to a piston-like member that biases the tip 65a. Further, the rod 67, the cap 68, the sandwiching plate 69, and the like constitute an operation portion formed so as to be able to urge the operating ring 64.

FIG. 4 is an explanatory diagram of the dimensional relationship of the valve body member 2 of the quick opening pressure regulating valve configured as described above and the pressure adjustment function based on the dimensional relationship. In this figure, the sealing plate 52 shown in FIG. 1 is broken, the conduction hole 23 conducts between the upper and lower sides, and the inlet pressure P ₁ is applied to the open pressure surface 25.

The valve body member 2 has a center diameter d _{3 of} the contact portion of the valve seat as a dimension of the valve seat 13, an outer diameter d ₅ as a dimension of the closed pressure receiving surface 24, and an open pressure as dimensions related to the pressure adjustment function. It has an outer diameter d ₄ as a dimension of the surface 25. The spring force F shown as these various dimensions and the biasing force is determined on the relationship pressure P ₂ of the outlet 12a becomes below a predetermined pressure. D ₁ and d ₂ are the diameter of the conduction hole 23 where the inlet pressure acts and the minimum diameter of the shaft portion of the valve body member 2 where the outlet pressure acts, both of which are intermediately interposed.

To configure the relationship as described above, it is necessary to determine the dimensions and the like, as the valve when P ₂ is equal to or higher than a predetermined pressure is closed. Therefore, when the pressure at the inlet 11a is P ₁ and the condition is expressed as:
(Valve closing force)
(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 constant force at constant elongation when the spring constant is determined. Therefore, if d ₅ is set larger than d ₃ , the valve is closed when P ₂ becomes large. Strength increases. Therefore, when determining the various dimensions and F relationship as in the above equation, close the valve the valve closing force by the pressure becomes greater than the spring force when the outlet pressure P ₂ is above a predetermined value, P ₂ is more P ₁ does not close, it is possible to restrict the outlet pressure P ₂ below a certain pressure of interest.

In this example, the dimension d _{3 of the} valve seat and the dimension d _{4 of the} pressure-receiving surface are made the same.
(Π / 4) [P ₂ (d ₅ ² −d ₃ ² )] ≧ F (2)
It becomes. In this way, by defining only d ₅ , d ₃ and F, the outlet pressure can be limited to a target predetermined pressure or less. Therefore, the design of the valve becomes easy. Further, since the outlet pressure can be limited regardless of the inlet pressure, even if the inlet pressure decreases and the outlet pressure increases for some reason, it is possible to prevent the backflow of fluid to the inlet side. Further, since the portion related to pressure adjustment is reduced, the operation stability is high, the outlet pressure can be reliably restricted, and the reliability of the valve is improved.

4, when the sealing plate 52 is not open, not applied inlet pressure P ₁ is the open receiving section 25, because in the state of atmospheric pressure, of d _{4 =} 0 according to equation (1) As a result, the valve closing force is sufficiently large and the valve remains reliably 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), if P ₁ is sufficiently larger than the atmospheric pressure, P ₂ can be regarded as almost zero, so d ₃ and d ₄ Are the same or the difference between d ₄ and d ₃ is not so large, only the spring force F acts as the valve opening / closing force, so that the valve is reliably opened. The open state is maintained until the outlet pressure rises above a predetermined pressure. In this case, if the force to open the valve is as large as possible, the valve is fully opened, so that the fluid resistance is never increased by the opening / closing mechanism or the pressure adjusting mechanism.

The quick opening pressure regulating valve shown in FIG. 1 as described above has a simple structure and a reliable operation. FIG. 5 shows a schematic system of a nitrogen fire extinguishing apparatus which is an example of an apparatus to which the quick opening pressure regulating valve of the present invention is applied. The nitrogen fire extinguishing apparatus includes a nitrogen cylinder 100 filled with nitrogen that has been pressurized to a pressure of about 150 kgf / cm ² G at 40 ° C., a quick-open pressure regulating valve 101 of the present invention attached thereto, and a temperature of 40 ° C. The CO ₂ cylinder 102 for starting having a pressure of about 110 kgf / cm ² G, a starter 103 mounted on the cylinder 102 and having the same structure as the valve operating mechanism of FIG. A gas line 104, a fire extinguishing source line 105, a safety device 106, a main valve 107, a selection valve 108 for selecting a fire extinguishing section, an individual fire extinguishing line 109, a fire extinguishing section 110, and the like are included. The quick opening pressure regulating valve is d ₃ = d ₄ , for example, P ₂ = 110 kgf / cm ² G, based on the formula (2),
(Π / 4) [110 (d ₅ ² −d ₃ ² )] = F (3)
Designed in a relationship. Here, _{d 5} and _{d 3} is cm, F is kgf.

The quick opening pressure regulating valve configured as described above operates as follows. The rapid opening pressure regulating valve is applied with an inlet pressure P _{1 of} about 150 kgf / cm ² G from the nitrogen cylinder 100, and the sealing plate 52 is not broken. Therefore, in the expression (1), a large valve closing force of P ₁ d ₃ ² π / 4 is applied with d ₄ = 0, and the valve is securely closed. In this state, for example, when a fire occurs in any one of the fire extinguishing sections, the starter 103 is operated, and the pressure 110 kgf / cm is applied to the valve operating mechanism 6 of the quick opening pressure regulating valve 101 from the CO ₂ cylinder 102 via the starting gas line 104. A working gas of about ² G is introduced.

In the valve operating mechanism 6, the working gas is introduced into the upper part of the working ring 64 through the conduction holes opened in the outer cylinder 61, the inner cylinder 62, and the cover 63, and the gas pressure is increased between this and the rod 67. The operating ring 64 and the needle member 65 and the tip 65a are pushed down and opened through the sealing plate 52. Nitrogen immediately enters the upper end from the inlet 11a through the conduction hole 23, and the inner cylinder 62 and The pressure P ₁ is applied to the open pressure surface 25 formed between the spring receiver 3. On the other hand, since both d ₃ and d ₄ become effective, the P ₁ portion of the formula (1) becomes 0, and the outlet pressure P ₂ is also atmospheric pressure. The valve body member 2 is reliably pushed down, and the valve opens instantly. Thereby, nitrogen is rapidly flowed to the fire extinguishing source line 105 and below, and the fire extinguishing section is filled to exhibit a fire extinguishing effect.

On the other hand, when the valve is opened, for example, when the main valve 107 and the selection valve 108 are closed, the pressure of the fire extinguishing source line 105 increases, and as a result, the pressure of the outlet 12a of the quick opening pressure regulating valve 101 increases. To do. However, when this pressure reaches 110 kgf / cm ² , the dimensions and spring force are determined as in equation (3), so the force and valve opening / closing force balance with the outlet pressure, and when the pressure exceeds 110 kgf / cm ^2. The valve closing force due to pressure overcomes the spring force and the valve closes. As a result, an excessive increase in the outlet side pressure of 110 kgf / cm ² G or more is prevented.

  FIG. 6 shows a structural example of another quick opening pressure regulating valve to which the present invention is applied. Compared with the one shown in FIG. 1, this quick opening pressure regulating valve is mainly provided in the valve body member 2 as a passage for connecting one end side leading to the inlet 11 a of the valve body member 2 and the other end side leading to the open pressure receiving surface 25. Instead of the conduction hole 23 provided, a lateral conduction hole 14 and a side conduction hole 15 as a passage provided in the main body 1 are provided. The two conductive holes are 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 operating mechanism 6, and the conduction holes 14 and 15 are electrically connected by the hole 62a formed in the inner cylinder 62, so that the cover 3 ' The opening pressure surface 25 is closed. The spring receiver 3 is screwed into the inner surface of the main body 1. The reinforcing ring 11c of FIG. 1 is not used.

  Also in this example, when the valve operating mechanism 6 is activated and the sealing plate 52 is broken, the gas pressure at the inlet 11a is changed to the lateral conduction hole 14, the sealing plate 52, the hole 62a, The valve body member 2 can be instantaneously acted on the pressure-receiving pressure surface 25 via the part conduction hole 15 and the valve body member 2 can be operated by the force of the spring 4 to open the valve. Further, if 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 becomes higher, the valve closing force becomes larger than the valve opening force, and the valve is closed to prevent further pressure increase. The According to the quick opening pressure regulating valve of this example, the valve operating mechanism 6 can be arranged in a direction perpendicular to the valve body member 2, so that there is an advantage that the entire shape of the quick opening pressure regulating valve can be reduced.

  As described above, the quick opening pressure regulating valve normally operates with the gas pressure from the starting gas line 104, but a failure or the like occurs in the starting system so that the working gas is not supplied to the valve operating mechanism 6 of the quick opening pressure regulating valve. In some cases, the valve can be opened directly by manual operation. At this time, the pin 69a for sealing is pulled out, is pulled out by holding the chain locking side of the sandwiching plate 69, and the cap 68 is pushed down to push down the operating ring 64 via the rod 67, thereby lowering the point 65a of the needle member. The sealing plate 52 can be broken. As a result, even if there is a failure or the like in the starter system, nitrogen can be immediately and surely supplied manually and fire extinguishing work can be performed.

According to such a quick opening pressure regulating valve, when the fire should be extinguished, the valve can be quickly and surely opened to supply nitrogen, and the outlet side pressure can be limited to, for example, 110 kgf / cm ² G or less as a predetermined pressure. it can. Therefore, it is not necessary to increase the pressure resistance of all the fire extinguishing systems such as the piping and valves on the outlet side to 110 kgf / cm ² G or more, which is the same as that in the conventional CO ₂ fire extinguishing system. As a result, it is possible to use a nitrogen fire extinguishing apparatus having a large fire extinguishing capacity of 150 kgf / cm ² G, for example, without causing an increase in equipment costs.

In addition, as a nitrogen fire extinguishing apparatus, the thing of the pressure of about 200 kgf / cm < ² > G can be used, for example. In addition to the nitrogen fire extinguishing device, the rapid opening pressure regulating valve can be widely used for other inert gas fire extinguishing devices, high pressure gas cylinders, and the like. 7 and 8 show still another structural example of the quick opening pressure regulating valve. The quick-open pressure regulating valve of this example includes a main body 1, a middle body 10 that is screwed inside and integrated with the main body 1 to function as a main body, a valve body member 2, and a lateral conduction as a passage. The hole 14, the connecting conduction hole 16 and the upper conduction hole 23 ', the spring receiver 3 as a receiving member and the moving spring receiver 9 which is also a moving receiving portion, the spring 4 as an urging member, and the sealing means as shown in FIG. Also includes a sealing plate mechanism 5 showing details, a valve operating mechanism 6 shown in FIG. In the figure, a state in which the movable spring receiver 9 is in the upper position and the valve body member 2 is closing the valve body 22 is shown on the right side of the center line C, and the spring receiver 9 is in the lower position and the valve body 22 is The open state is shown on the left.

  The main body 1 includes an inlet nozzle portion 11 and an outlet nozzle portion 12 that form an inlet 11a and an outlet 12a for high-pressure nitrogen, as in FIG. In addition, in the valve of this example, the inner cylinder 10 is provided in the inside of the main body 1 from the viewpoint of manufacturability and the like, thereby supporting and guiding the valve body member 2 and the like, and the lower end thereof is the valve seat 13 portion. However, it is needless to say that the inner cylinder 10 may be the same member as the main body as shown in FIG. The main body 1 is provided with a pressure gauge seat, a pressure throttle needle valve seat, a safety plug seat, and the like as necessary, but the illustration is omitted as in the case of FIG.

  The valve body member 2 has substantially the same structure as that shown in 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 connection conduction are provided. Conduction is made through the hole 16. However, it goes without saying that the passage and sealing plate mechanism as shown in FIG.

  In this example, the spring receiver 3 is placed on the outer side of the upper end portion of the middle cylinder 10 and is attached thereto by being screwed, and supports the reaction force of the spring 4 via the moving spring receiver 9. That is, as will be described later, after opening the sealing plate 52, the pressure on the inlet side of the introduced valve is received in the space between the moving spring receiver 9 and pressure is generated in the moving spring receiver, thereby moving the moving spring receiver. 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 this case, there may be a slight gap between the upper end of the moving spring receiver 9 and the contact surface of the spring receiver 3, or the contact may be made to the extent that some spring force remains.

  Further, a necessary portion is sealed by an O-ring 8 so that the valve body member 2 can slide in an airtight state. In this example, the moving spring receiver 9 is guided to move by the middle cylinder 10. However, the upper end portion of the middle cylinder 10 is made large in diameter, and the spring receiver 3 is screwed into the inside. A structure for guiding may be used. The spring 4 is interposed between the moving spring receiver 3 and the spring receiver 26 of the valve body member 2 and urges the valve body member 2 in the Z ′ direction as in the case of FIG.

  The moving spring receiver 9 is interposed between the spring receiver 3 and the spring 4, and in this example, is guided to be movable in the opening / closing direction ZZ ′ by the inner cylinder 10 integral with the main body 1, A pressure-receiving surface 9a that receives the same pressure is provided, and is stopped at the positioning portion 17 when it moves to a lower position L that is a predetermined position in the opening direction of Z ′, and an urging force F is generated on the spring 4. That is, the movable spring receiver 9 is inside the spring receiver 3 and newly operates as a substantial spring receiver. Note that the position of the positioning unit 17 may be adjustable by, for example, a method in which the positioning unit 17 is screwed or a thin adjustment member is provided on the positioning unit 17.

  The lateral conduction hole 14, the communication conduction hole 16, and the upper conduction hole 23 'are formed between the nitrogen inlet 11a side of the valve body member 2 on one end side and the open pressure receiving surface 25 on the upper end of the valve body member 2 on the other end side. It is a passage that connects between them. If the connection conduction hole 16 is provided and the upper conduction hole 23 'provided in the valve body member 2 is used as in this example, an independent space for the passage is unnecessary in the upper part of the valve as in FIG. Therefore, the diameter of the upper valve can be reduced. However, it is also possible to take a passage as shown in FIG.

  FIG. 9A shows the structure of the sealing mechanism 5. Although the thing of this example is substantially the same as that shown in FIG. 3, in this example, a gas supply port 55 is provided at the tip of the threaded ring 51. The outside of the nozzle part constituting the sealing pressure mechanism 5 is a screw 56. Therefore, a screw 62a is cut inside the tip of the inner cylinder 62 of the valve operating mechanism 6 shown in FIG. 9B, and this is screwed into the screw 56 of the nozzle portion from the outside. However, this portion may have a screwed structure as shown in FIG. The other structure of the valve operating mechanism 6 is exactly the same as that of FIG.

FIG. 10 shows the relationship of the pressure applied to the valve element 2 of the quick release pressure regulating valve shown in FIGS. 7 and 8. FIG. 10 (a) is a view corresponding to FIG. ) Is the state before opening. When the sealing plate 52 is broken, in the rapid opening pressure regulating valve of the present example, the gas at the inlet 11a is sequentially opened through the lateral conduction hole 14, the air supply port 55, the communication conduction hole 16, and the upper conduction port 23 '. flows to the pressure receiving surface 9a of the surface 25 and moving the spring receiver 9, the pressure P ₁ is exerted on these, as shown in (a). Accordingly, the pressure receiving surface 9a side, moving spring receiving 9 is pushed down by the pressure P ₁ of this section, and stops against the positioning portion 17 of the drop when the intermediate body 10 to a predetermined position L while compressing the spring 4. 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. This to the effect of the force applied to open the pressure-receiving surface 25 by the spring force F and the pressure P _1, for the total force relationship applied to the valve body member 2 including these, made as described in FIG. In the valve of this example, the pressure on the outlet side is controlled by the equations (1) and (2).

(B) before opening the sealing plate 52 shown in, when the pressure of the nitrogen cylinder 100 is high, high pressure P _1, whereas the outlet 12a for the valve seat 13 is closed the valve contacts the valve body 22 the pressure of the side is in the low atmospheric pressure P _0. As a result, as shown in Equation (1), the valve closing force by the pressure P ₁ is sufficiently larger than the valve opening force F of the spring, it is possible to close the valve. However, P ₁ is below a certain pressure, when the valve of Figure 1, this by the valve closing force so that the valve opens is smaller than the valve release force by the spring force F. For example, according to the spring force F _{when P 1} as described above controls the _{P 2} at 150 kgf / cm ² to 110 kgf / cm ² pressure below about 1/3 _{P 1} is at maximum i.e. 50 kgf / cm ² It becomes the degree, towards the valve opening force due to the spring force F becomes larger than the valve closing force according to P _1. And the valve opens unnecessarily.

However, according to the rapid opening pressure regulating valve of the present embodiment, as shown (b), the force the pressure acting on the pressure receiving surface 9a of the movable spring bearing 9 compresses the spring 4 by becoming the atmospheric pressure P ₀ is released , move the spring bearing 9 is raised to a position H to be F ₀ it is substantially zero from the position L to F generate a spring force. 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, the arrows of P ₀ and F _{0 in} the figure indicate the directions 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 nitrogen from flowing out to the outlet line even when the pressure of the nitrogen cylinder 100 is lowered. As shown in FIG. 5, even when the valve is opened and nitrogen enters the outlet line, in the fire extinguishing system, unnecessary discharge of the fire extinguishing gas into the fire extinguishing area is prevented by the main valve 107 and the selection valve 108. So there is no danger at all. In addition, 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 immediately when the pressure in the cylinder rises even a little due to the resistance of the valve. In this state, nitrogen can be filled in a state where the cap is put on or slightly covered, and the handleability of the valve can be improved.

The following embodiments are possible for the present invention.
(1) a main body having a fluid inlet and outlet and a valve seat;
It has one end side and the other end side, and is formed on the other end side with a valve body part that opens and closes by opening and closing the valve seat on one end side, a closed pressure receiving surface 24 that conducts to the outlet and receives pressure in the closing direction. A valve body member provided with a pressure-receiving surface 25 for receiving pressure in the opening direction and guided by the main body so as to be movable in the opening and closing direction;
A passage for conducting between the one end side and the other end side;
A biasing member that biases the valve body member in the opening direction;
Sealing pressure means comprising a sealing plate attached to close the passage;
And a sealing pressure release means attached to the main body, which is formed so as to break the sealing plate when operated and supply the pressure in the passage to the open pressure surface.
The pressure receiving area that receives the fluid pressure of the valve body seated on the valve seat, the pressure receiving area of the closed pressure receiving surface, the pressure receiving area of the open pressure receiving surface, and the biasing force of the biasing member are One end side and the other end side are electrically connected to each other, and the opening pressure surface receives the pressure in the opening direction to open the valve body portion. When the outlet pressure exceeds a predetermined pressure, the valve body portion is closed. A quick opening pressure regulating valve characterized in that the valve closing force is set to be larger than the biasing force and the valve body portion is closed.

(2) a main body provided with a fluid inlet and outlet and a valve seat;
It has one end side and the other end side, and is formed on the other end side with a valve body part that opens and closes by opening and closing the valve seat on one end side, a closed pressure receiving surface 24 that conducts to the outlet and receives pressure in the closing direction. A valve body member provided with a pressure-receiving surface 25 for receiving pressure in the opening direction and guided by the main body so as to be movable in the opening and closing direction;
A passage for conducting between the one end side and the other end side;
A biasing member that biases the valve body member in the opening direction;
Sealing means comprising a sealing member attached to close the passage;
And a sealing pressure release means attached to the main body and configured to supply the pressure in the passage to the receiving pressure surface while keeping the sealing pressure member open when actuated.
The pressure receiving area that receives the fluid pressure of the valve body seated on the valve seat, the pressure receiving area of the closed pressure receiving surface, the pressure receiving area of the open pressure receiving surface, and the biasing force of the biasing member are the one end side of the passage. A valve that opens the valve body portion when the other end side is connected and the pressure-receiving surface receives pressure in the opening direction, and closes the valve body portion when the outlet pressure exceeds a predetermined pressure. A quick opening pressure regulating valve characterized in that a closing force is larger than the biasing force and the valve body portion is closed.

  The quick opening pressure regulating valve is constituted by a combination of a main body, a valve body member, a receiving member, an urging member, a sealing pressure means, and a sealing pressure releasing means. A valve body seated on the valve seat of the main body, provided with a passage in the valve body member or the main body, one end side of which is connected to the main body inlet, the passage to the other end side sealed with a sealing member of the sealing pressure means The pressure receiving area for receiving the fluid pressure of the part, 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 biasing force of the biasing member are When the pressure at the outlet exceeds a predetermined pressure when the end side is connected and the pressure-receiving surface receives pressure in the opening direction, the valve closing force that closes the valve body is greater than the biasing force, and the valve body is Since the pressure at the outlet of the main body is determined to be a predetermined pressure or less so that it is closed, the valve body member is To open and close in.

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

  Next, when the sealing pressure means is activated, the sealing pressure member blocking the passage to the other end side is opened and inlet pressure is applied to the open pressure receiving surface, which releases or reduces the closing pressure of the valve body member inlet portion. Then, the urging force of the urging member can be made effective to open the valve body member reliably.

Further, when the outlet pressure increases in this state, the pressure on the closed pressure-receiving surface becomes larger than the urging force of the urging member, the valve is closed, and the increase of the outlet pressure beyond a certain level can be restricted. As a result, even if the fluid inlet pressure is high, the outlet pressure can be reduced to a predetermined pressure or lower, and the pressure resistance of piping, valves, and the like can be reduced to that pressure. Then, for example, maintains the value of 110 kgf / cm ² G as an outlet pressure corresponding to the design pressure of the conventional fire extinguishing systems, namely without increasing the cost of the piping system and the like, at 150 kgf / cm ² G of about or more high pressure It is possible to adopt a nitrogen fire extinguishing apparatus having a large fire extinguishing ability.

(3) The sealing pressure member is a sealing plate,
The sealing pressure releasing means is
A needle portion provided to face the sealing plate;
A piston-like member that biases the needle portion so that the needle portion penetrates the sealing plate by receiving fluid pressure;
And a quick-open pressure regulating valve having an operating portion formed so as to bias the piston-like member.

  As the sealing pressure release means, a needle part provided so as to face the sealing pressure member is attached to a piston-like member that is operated by fluid pressure, and this can be operated by the operation part. Therefore, the sealing pressure member is remotely controlled by fluid pressure. In addition to being able to operate, even when a failure or the like 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 apparatus can be improved.

(4) When a pressure receiving surface that is interposed between the receiving member and the biasing member and is guided so as to be movable in the opening and closing direction and receives the same pressure as the opening pressure receiving surface is moved to a predetermined position in the opening direction A movement receiving portion 9 for generating the urging force in the urging means;
A quick-opening pressure regulating valve, comprising: a positioning portion 17 provided on the main body so as to stop the moving / moving receiving portion at the predetermined position.

  A moving receiving portion having a pressure receiving surface that receives the same pressure as the open pressure receiving surface is provided between the receiving member and the urging member, which is guided so as to be movable in the opening and closing direction, and the pressure receiving surface is released when the sealing pressure is released. In response to the pressure, the movement receiving portion is moved to a predetermined position in the opening direction, and the positioning portion is provided so as to stop at this position. Therefore, the urging force is generated on the urging member at the determined position at the time of opening. be able to. As a result, the outlet pressure can be controlled to be equal to or lower than a predetermined pressure by the same action as the above-described embodiment.

  On the other hand, when the sealing pressure is not released, the pressure receiving surface does not receive the pressure, so that no force is generated to move the movement receiving portion to a predetermined position, and the movement receiving portion receives the reaction force of the urging member. It moves freely in the direction opposite to the predetermined position. As a result, the urging force of the urging member is not generated, and the valve body member is not urged in the opening direction by the urging member. As a result, even when the fluid pressure on the inlet side decreases, unnecessary opening of the valve due to the biasing force of the biasing member is prevented. In addition, when filling a fire extinguishing gas container or the like equipped with a quick-open pressure regulating valve, it becomes possible to fill the gas without completely closing the outlet side, so that the handling of the apparatus can be improved. it can.

  (5) A quick opening pressure regulating valve characterized in that the size of the valve seat is the same as the size of the pressure-receiving surface.

  Since the size of the valve seat is the same as the size of the opening pressure surface, the opening / closing force of the valve body member is determined by the outlet pressure, the size of the valve seat, the size of the closing pressure surface, and the biasing force of the biasing member. Therefore, the design of the valve becomes easy. Further, since the outlet pressure can be limited regardless of the inlet pressure, it is possible to prevent the backflow of fluid to the inlet side when the outlet pressure increases. Further, since the portion related to the pressure adjustment is reduced, the operation stability of the valve is increased, the outlet pressure can be surely limited, and the reliability of the valve can be improved.

(6) an inert gas cylinder 100 storing an inert gas for fire extinguishing;
A rapid opening pressure regulating valve as described above, wherein the inlet of the body is attached to an inert gas cylinder 100;
A fire extinguishing apparatus comprising lines 105 and 109 for introducing an inert gas from an outlet of the quick opening pressure regulating valve to a fire extinguishing section.

(7) To the high pressure gas cylinder,
A high-pressure gas cylinder device, wherein the inlet of the main body of the rapid opening pressure regulating valve is mounted.

(8) a fluid source 100 for supplying fluid;
The rapid opening pressure regulating valve as described above, wherein the inlet of the main body includes a rapid opening pressure regulating valve provided in a fluid source.

  Since the fire extinguishing device, the high-pressure gas cylinder device, and the fluid rapid supply device using the quick opening pressure regulating valve described above are realized, it is possible to quickly supply a fluid such as an inert gas for fire extinguishing, and to control the pressure of the fluid. The pressure can be suppressed below a predetermined pressure.

It is a longitudinal cross-sectional view which shows an example of the whole structure of the quick open pressure regulation valve to which this invention is applied. An example of the valve operating mechanism of the said quick open pressure regulation valve is shown, (a) is a top view, (b) is a longitudinal cross-sectional view. It is a fragmentary sectional view which shows the structural example of the sealing pressure part of the said quick open pressure regulation valve. It is explanatory drawing of the relationship of the force concerning each part of the valve body member of the said quick open pressure regulation valve. It is a systematic diagram which shows an example of the nitrogen fire extinguishing apparatus which is an apparatus which can apply the said quick open pressure regulation valve. It is a longitudinal cross-sectional view which shows the other example of the quick open pressure regulation valve to which this invention is applied. It is a longitudinal cross-sectional view which shows another example of the quick open pressure regulation valve to which this invention is applied. It is a longitudinal cross-sectional view of the direction different from the above of the said valve. (A) is an expanded sectional view of a sealing board mechanism, (b) is a secondary sectional view of the valve action mechanism for this mechanism. It is explanatory drawing of the relationship of the force applied to each part of the valve body member of the said quick opening pressure regulation valve, (a) is the state after opening, (b) shows the state before opening.

Explanation of symbols

1 Body 2 Valve body member 3 Spring receiver (receiving member)
4 Spring (biasing member)
5 Sealing plate mechanism (sealing pressure means)
6 Valve operation mechanism (sealing pressure release means)
9 Moving spring receiver (receiving part, moving receiving part)
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 hole (passage)
17 Protruding surface (positioning part)
23 Conduction hole (passage)
23 'upper conduction hole (passage)
24 Closing pressure surface 25 Opening pressure surface 52 Sealing plate (sealing pressure member)
64 Actuation ring (piston-like member)
65a Point (needle)
67 Rod (operation part)
68 Cap (operation part)
69 Clamping plate (operation part)
d Center diameter of the contact part of the valve seat ₃ (valve seat dimensions)
d ₅ Outer diameter (Dimension of closed pressure-receiving surface)
d ₄ Outer diameter (dimension of pressure receiving surface)
F Spring force (biasing force)
Pressure L under the position of P ₂ outlet (predetermined position)
Z Open direction Z 'Close direction

Claims (5)

A body with fluid inlets and outlets and a valve seat;
A valve body pressed against the valve seat of the main body by the pressure of the fluid in the cylinder,
A passage for guiding the fluid in the cylinder through the sealing plate so that the valve body portion acts in a direction away from the valve seat;
An urging member for applying a spring force in a direction in which the valve body part moves away from the valve seat, and controlling the secondary side pressure using the spring force;
A rapid opening pressure regulating valve comprising: a sealing pressure releasing means for breaking the sealing plate. A body with fluid inlets and outlets and a valve seat;
A valve body that is pressed by the pressure of the fluid in the cylinder toward the valve seat of the main body,
A biasing member that applies a spring force to the valve body in the opening direction;
A passage for guiding the fluid in the cylinder so that the valve body receives pressure in the opening direction;
A sealing plate attached to block the passage;
Sealing pressure release means for breaking the sealing plate,
The rapid opening pressure regulating valve according to claim 1, wherein the spring force of the urging member is determined such that the valve body is opened when the sealing plate is broken by the sealing pressure releasing means.   The sealing pressure release means includes a needle portion provided so as to face the sealing plate, and a piston-like member that biases the needle portion so that the needle portion penetrates the sealing plate by receiving fluid pressure. The quick-open pressure regulating valve according to claim 1, further comprising an operation portion formed so as to bias the piston-like member. An inert gas cylinder 100 for storing an inert gas for fire extinguishing;
The quick opening pressure regulating valve according to any one of claims 1 to 3, wherein the inlet of the main body is attached to an inert gas cylinder 100;
A fire extinguishing apparatus comprising lines 105 and 109 for introducing an inert gas from an outlet of the quick opening pressure regulating valve to a fire extinguishing section. For high pressure gas cylinders,
A high-pressure gas cylinder apparatus, wherein the inlet of the main body of the quick opening pressure regulating valve according to any one of claims 1 to 4 is mounted.

Images