JPH0511964U - Fire extinguishing equipment selection valve and fire extinguishing equipment - Google Patents

Abstract

(57) [Summary] [Purpose] In a fire extinguishing facility that allows a fire extinguishing fluid to be supplied from a collection container to multiple compartments via branch pipes, the selection valves interposed in each branch pipe are normally closed. Detects whether or not it is locked. Detects whether the valve element of the on-off valve interposed in the main pipe is normally open. [Structure] Lever 1 of lock mechanism 10 in selection valve V
A cam portion 42 is provided on the support shaft 12 integrated with the support shaft 3. Cam part 42
The tip of the kick piece 32 of the limit switch 30 is faced to.
The lever 13 is flipped up to the standing posture and the lock mechanism 10
When is unlocked, the cam portion 42 separates from the tip of the kick piece 32 of the limit switch 30, and the ON / OFF state of the limit switch 30 is switched. Select valve V for the on-off valve
Divert.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a fire extinguishing equipment selection valve and a fire extinguishing equipment.

[0002]

[Prior Art]

 An example of fire extinguishing equipment using a selection valve will be briefly described with reference to FIG. 9. In this fire extinguishing facility, the discharge ports of a plurality of containers 50a, 50b, 50c that store a fire extinguishing fluid such as carbon dioxide or halon 1301 are connected to a plurality of locations on the proximal end side of the trunk pipe 51, and Branch pipes 52a, 52b ... Are connected to a plurality of locations on the other end side through selection valves V1, V2 ..., and those branch pipes 52a, 52b ... Are led to a plurality of fire protection target compartments 53a, 53b. A nozzle 54 for extinguishing a fire extinguishing fluid is provided in that portion. Further, fire detectors 55 are installed at appropriate places in the fire protection target sections 53a and 53b, and a fire detection signal from the detectors 55 is sent to a control panel 56 installed in the monitoring room R or the like. When a specific starting device selected, for example, the starting device 57a is activated by the control signal output from the control panel 56, the selection valve V1 provided corresponding to the specific fire protection target compartment 53a in which a fire has occurred. The piston releaser 58a, which constitutes a part of the locking mechanism of the control valve, moves to release the locked state of the selection valve V1, thereby opening the fire extinguishing fluid passage of the selection valve V1 and, at the same time, the containers 50a and 50b. , 50c side open / close valves (not shown) are opened and the fire extinguishing fluid in the containers 50a, 50b, 50c is pressure-fed through the main pipe 51, the selection valve V1 and the branch pipe 52a, and the nozzle 54 ... Is emitted from the fire protection target area 53a. A speaker 59, a fire extinguishing fluid-filled indicator light 60, an operation box 61, and the like for warning the occurrence of a fire are installed in the fire protection target sections 53a and 53b.

In such a fire extinguishing facility, the respective selection valves V1, V2 ... Corresponding to the individual fire protection target compartments 53a, 53b ... Are normally all locked by a lock mechanism, and the fire extinguishing fluid passages are closed. On the other hand, for example, when a fire occurs in a specific fire protection target compartment 53a, the selection valve V1 corresponding to the fire protection target compartment 53a is locked based on the detection signal of the sensor 55 or the activation signal of the operation box 61. Only the fire extinguishing fluid passage of the selection valve V1 needs to be opened by releasing the mechanism.

However, in spite of such a request, the lock of the selection valve V2 corresponding to the other fire-protected compartment 53b in which a fire has not occurred due to an accidental act such as mischief or some other cause It is also possible that the mechanism remains unlocked. In such a case, the fire extinguishing fluid is pumped from the containers 50a, 50b, 50c not only to the fire-prevention target section 53a in which the fire has occurred but also to the nozzles of other fire-prevention target sections 53b. If such a situation occurs, the extinguishing fluid radiated to the fire-prevention target compartment 53a in which the fire has occurred may not reach the concentration necessary for extinguishing and may not be extinguished. In addition, it is necessary to issue an alarm such as outdoor evacuation to the fire prevention target compartment where the fire extinguishing fluid is released, but such an alarm is issued to other fire prevention target compartments 53b where no fire has occurred. Since the extinguishing fluid begins to be discharged without being emitted, it may cause confusion and, in the worst case, carbon dioxide extinguishing equipment may cause suffocation or other life-threatening danger.

On the other hand, in the above fire extinguishing equipment, when inspecting equipment such as the fire detector 55, the operation box 61, and the control panel 56, the fire extinguishing fluid is erroneously discharged from the containers 50a, 50b, 50c ... It is possible that the substance may be released via a fire, which could lead to a serious accident.

[0006]

[Problems to be solved by the device]

 The present invention has been made in view of the above circumstances, and when the lock mechanism of the selection valve is released, the release operation is sensed so that the lock mechanism of the selection valve is left unintentionally released. A fire extinguishing facility that can prevent such a situation and reliably extinguish the fire when a specific fire-prevention target compartment fires, and at the same time prevent confusion and danger in other fire-prevention target compartments at the same time The purpose is to provide a selection valve useful for Another object of the present invention is to prevent accidental discharge of the fire-extinguishing fluid when inspecting equipment such as fire detectors, operation boxes and control panels used in fire-extinguishing equipment. The purpose is to provide possible fire fighting equipment.

[0007]

[Means for Solving the Problems]

 The fire extinguishing equipment selection valve according to the invention of claim 1 has a valve body in which a valve body for opening and closing a fire extinguishing fluid passage inside the valve casing is built, and the valve is operated by the pressure of the fire extinguishing fluid applied to the inlet side of the passage. The body is configured to be urged in the opening direction, the valve body is locked in the closed position by the lock mechanism, and the movable part of the lock mechanism performs a certain operation to release the locked state with respect to the valve body. And a switch for detecting that the movable part of the lock mechanism has performed a certain operation to unlock the valve body. It is a feature.

In the fire-extinguishing equipment of the second aspect of the invention, the discharge port of the container is connected to a predetermined position on the proximal end side of the trunk pipe, and a branch pipe is connected to a predetermined position on the other end side of the trunk pipe via a selection valve. A fire-extinguishing facility, which is connected, guides a branch pipe to a fire protection target compartment, winds it, and equips the wound portion with a nozzle for ejecting a fire extinguishing fluid, wherein the selection valve according to claim 1 is diverted as an on-off valve, The on-off valve is characterized by being interposed in a pipe line between the container discharge port connection part and the branch pipe connection part in the main pipe.

[0009]

[Action]

 According to the fire extinguishing equipment selection valve of the invention of claim 1, when the lock mechanism is released, the fact can be recognized by the detection signal of the switch.

According to the fire extinguishing equipment of the second aspect of the present invention, by closing the on-off valve, erroneous discharge of the fire extinguishing fluid cannot occur during inspection of the selection valve. Further, since the on-off valve is a diversion valve of the claim 1, when the lock mechanism of the on-off valve is released, the fact can be recognized by the detection signal of the switch.

[0011]

【Example】

 The basic construction of the selector valve V according to the embodiment of the present invention is shown in FIGS. This selection valve V has an introduction hole 2 in the lower part of a hollow valve box 1 and a derivation hole 3 on its side, and the introduction hole 2, derivation hole 3 and internal space 4 form a fire extinguishing fluid passage 5. Has been formed. A valve body 6 is built in the valve box 1 so as to be able to move up and down. When the valve body 6 descends to a position where it abuts on the valve seat portion 7 around the introduction hole 2 as shown in FIG. The fire extinguishing fluid passage 5 is closed while the valve body 6 is elevated to a position away from the valve seat 7 as shown in FIG. The passage 5 is open. Reference numeral 8 is a buffer space surrounded by the valve body 6 and the valve box 1, and 9 is a small-diameter through hole that opens at the upper surface and the outer peripheral surface of the valve body 6, and the valve body 6 rises from the state of FIG. At times, the pressure is gradually released from the inside of the buffer space 8 through the through port 9 into the fire extinguishing fluid passage 5, whereby the rapid rise of the valve body 6 is suppressed.

Further, the selection valve V is provided with a lock mechanism 10 for locking the valve body 6 at the position where it abuts on the valve seat portion 7, that is, the closed position shown in FIG. The locking mechanism 10 includes a support shaft 12 swingably supported by a bracket 11 projecting from the valve box 1, a lever 13 fixed to the support shaft 12 and tilted by the swing of the support shaft 12. The valve box 1 so that the adjusting screw 14 screwed to the central portion of the lever 13 and one end portion and the other end portion that are fitted and held by the support shaft 12 always elastically bias the lever 13 in the upright direction. And a lever 13, which are elastically contacted with each other, a valve rod 17 which protrudes upward from the valve body 6 and penetrates a hole 16 formed in the upper wall of the valve box 1, and a valve box. 1, a swing shaft 19 that is rotatably supported by another bracket 18 that is provided to project, a link 20 that is provided on the swing shaft 19, a piston releaser 58 that is mounted on the valve box 1, and a piston. The engaging pin 23 protruding from the piston rod 22 of the relay 58 is provided. The engaging pin 23 is engaged with the notch-shaped engaging hole 24 of the link 20, and a part of the swing shaft 19 has a relief recess 25a recessed in the radial direction and an engaging shaft portion 25b. And a recessed engagement portion 26 is formed at the tip of the lever 13. Reference numeral 27 is a handle for manual operation provided on the piston rod 22.

In the selection valve V having the basic configuration described above, when the valve body 6 is locked by the lock mechanism 10, as shown in FIG. 7, the valve body 6 was laid sideways against the bias of the torsion spring 15. The valve rod 17 is pushed down by the adjusting screw 14 of the lever 13, whereby the valve body 6 closes the introduction hole 2 in the closed position where it abuts on the valve seat portion 7, and the piston rod 22 of the piston releaser 58 retracts. In addition, the engaging portion 26 of the lever 13 engages with the engaging shaft portion 25b of the swing shaft 19 to maintain its sideways posture. Therefore, when the selection valve V of FIGS. 7 and 8 is adopted as the selection valves V1 and V2 described in FIG. 9, when the valve body 6 is locked at the closed position by the lock mechanism 10 of the selection valve V. Even if the pressure of the fire extinguishing fluid stored in the containers 50a, 50b, 50c is applied to the introduction hole 2, the valve body 6 blocks the flow of the fire extinguishing fluid at the closed position. When such a locked state is released, the starting gas is introduced into the piston releaser 58 (indicated by reference numeral 58a or 58b in FIG. 9) by the operation of the starting device 57a, and the piston releaser 58 is accordingly accompanied. When the piston rod 22 is pushed out together with the engaging pin 23 as indicated by an arrow a, the swing shaft 19 together with the link 20 engaged with the engaging pin 23 moves from the position shown in FIG. As indicated by the symbol d, the engaging shaft portion 25b of the swing shaft 19 and the engaging portion 26 of the lever 13 are disengaged by swinging in the counterclockwise direction, and the escape recess 25a of the swing shaft 19 is formed in the lever 13. It faces the engaging portion 26. Therefore, the lever 13 is flipped up around the support shaft 12 as indicated by the arrow b by the force of the torsion spring 15 to assume the standing posture as shown in FIG. In this case, as the pressure of the fire extinguishing fluid is applied to the introduction hole 2, the valve body 6 is gradually opened by the pressure relief action from the buffer space 8 by the through hole 9, and the valve rod 17 is opened. Gradually, the valve body 6 is separated from the valve seat 7 to open the introduction hole 2 to open the fire extinguishing fluid passage 5, and the fire extinguishing fluid is pumped to the fire protection target compartment.

Here, in the lock mechanism 10, the support shaft 12, the lever 13, the adjusting screw 14, the valve rod 17, the swing shaft 19, the link 20, the piston rod 22 of the piston releaser 58, and the engagement pin 23 of the piston rod 22. Each of the parts such as, is a movable part of the lock mechanism 10, and in order to release the locked state from the state where the valve body 6 is locked in the closed position, all of these movable parts perform the constant operation as described above. Need to do. The operation of each part necessary for releasing the locked state will be specifically described. The support shaft 12 is a counterclockwise rotating motion (arrow f) in the figure, and the lever 13 and the adjusting screw 14 is the jumping motion around the support shaft 12 (arrow b), the valve stem 17 is the upward projecting motion of the valve box 1 (arrow c), and the swing shaft 19 is This is a counterclockwise rotation operation (arrow d) in the figure, and the link 20 is a counterclockwise swing operation (arrow e) in the figure, and the piston rod 22 and the engagement of the piston releaser 58. The dowel pin is the pushing operation (arrow a).

The selection valve V of the present invention, in addition to the above-described basic structure, unlocks individual parts such as the support shaft 12, the lever 13, and the engaging pin 23 that constitute the movable portion of the lock mechanism 10. It is provided with a switch that senses the movement of time. If the switch is a mechanical switch such as a limit switch equipped with a kick piece as an actuator that is kicked by the moving part, that is, a proximity switch that senses the approach and separation of the moving part in a non-contact state, Instead, it is possible to employ an optical switch such as a photoelectric switch.

FIGS. 1, 2, and 3 show a first embodiment in which the support shaft 12 is selected as the movable portion of the lock mechanism 10 and the limit switch 30 is used as the switch. That is, the support shaft 12 is extended to the side of the bracket 11, and the extended portion 41 is partially cut out in the radial direction to form a half-moon shaped cam portion 42, whereas the side of the bracket 11 is extended. A limit switch 30 is attached to the upper surface of the valve box 1 by means of a screw 31, and a free-acting copying roller 33 provided on a kick piece 32 as an actuator of the limit switch 30 is made to face the cam portion 42.

In such a selection valve V, when the lock mechanism 10 in the locked state as shown in FIGS. 1 and 2 (corresponding to FIG. 7) releases the locked state, the lock mechanism 10 shown in FIG. 13), the lever 13 is flipped up by the force of the torsion spring 15 (see FIGS. 7 and 8), and the support shaft 12 rotates counterclockwise as indicated by arrow f. As a result, the cam portion 42, which is in contact with the copying roller 33 of the limit switch 30 in the locked state, is separated from the copying roller 33 as the lock is released, so that the kick piece 33 moves to turn the limit switch 30 on and off. Replace. Therefore, the switching signal of the limit switch 30 can be taken out by the command line 34, and the switching of the limit switch 30 can be displayed or warned by an alarm means such as an indicator lamp or a buzzer installed in the monitoring room R described in FIG. It is possible. For example, if the indicator lamp is turned on when the support shaft 12 is in the state shown in FIG. 3, it is possible to recognize that the lock state of the locking mechanism 10 is released when the indicator lamp is turned on. Based on this recognition, the lock mechanism 10 can be returned to the locked state to prepare for an unexpected situation such as a fire.

FIG. 4 shows a second embodiment in which the engaging pin 23 is selected as the movable portion of the lock mechanism 10 and the limit switch 30 is used as the switch. That is, the engaging pin 23 is projected to the opposite side of the piston rod 22 of the piston releaser 58, and the copying roller 32 of the limit switch 30 is exposed to the engaging pin 23.

In such a selection valve V, when the lock mechanism 10 in the locked state as shown in FIG. 4 (corresponding to FIG. 7) releases the locked state, the engagement pin 23 together with the piston rod 22. 4 moves to the left (the protruding direction of the piston rod) in FIG. 4, and the engagement pin 23 kicks the copying roller 33 of the limit switch 30 to move the kicking piece 33, and the ON / OFF state of the limit switch 30 is switched. Therefore, in the same manner as described with reference to FIGS. 1 to 3, the changeover signal of the limit switch 30 is taken out through the command line 34, and the indicator lights and buzzers installed in the monitoring room R described in FIG. It is possible to display or give an alarm for the switching of the limit switch 30 by the alarm means, and recognize that the lock state of the lock mechanism 10 has been released by the display or alarm and return the lock mechanism 10 to the lock state to fire. It is possible to be prepared for the unforeseen event of occurrence.

5 and 6 show a third embodiment in which the lever 13 is selected as the movable portion of the lock mechanism 10 and the proximity switch 100 is used as the switch. That is, the switch portion 101 of the proximity switch 100 is attached to the upper surface of the valve box 1 with the screw 103, and the magnet 102 of the proximity switch 100 is attached to the side surface of the lever 13.

In such a selection valve V, when the lock mechanism 10 in the locked state as shown in FIG. 5 (corresponding to FIG. 7) releases the locked state, FIG. Lever 13 is flipped up by the force of the torsion spring 15 (see FIGS. 7 and 8). Therefore, the magnet 102 facing the switch unit 101 of the proximity switch 100 in the locked state is separated from the switch unit 101 as the lock is released, and the on / off state of the switch unit 101 is switched. Therefore, the switching signal of the switch section 101 is taken out through the command line 104, and the switching means of the switch section 101 is displayed or warned by an alarm means such as an indicator lamp or a buzzer installed in the monitoring room R described in FIG. It is possible to recognize that the lock state of the lock mechanism 10 has been released by the display or alarm and return the lock mechanism 10 to the lock state to be prepared for an unexpected situation such as occurrence of fire.

1 to 6, the basic configuration of the selection valve V and the configuration of the lock mechanism 10 are the same as those described in FIGS. 7 and 8. Therefore, the same parts are denoted by the same reference numerals and detailed description thereof is omitted. It should be noted that in FIG. 9, the switches are indicated by reference numerals S1 and S2. Although not shown, parts such as the adjusting screw 14, the swing shaft 19, the link 20, and the piston rod 22 may be selected as the movable portion.

In FIG. 9, V3 is an opening / closing valve, and this opening / closing valve V3 is interposed in a pipe line between the container discharge port connecting portion and the branch pipe connecting portion in the main pipe 51. This on-off valve V3 has the same structure as the above-mentioned selection valves V1, V2 ,. That is, the on-off valve V3 is the same as the selection valves V1, V2 ... Therefore, the valve body has a built-in valve body for opening and closing the fire extinguishing fluid passage inside the valve body, and the valve body is biased in the opening direction by the pressure of the fire extinguishing fluid applied to the inlet side of the passage. The lock mechanism locks the valve element in the closed position, and the movable part of the lock mechanism performs a certain operation to release the locked state with respect to the valve element. A switch S is provided to detect that the movable part of the mechanism has performed a certain operation for releasing the locked state of the valve body.

In this fire extinguishing facility, for example, when performing inspection work such as the fire detector 55, the operation box 61, and the control panel 56, it is possible to manually close the on-off valve V3 and lock it in a closed state. Even if the fire extinguishing fluid is erroneously discharged from the containers 50a, 50b, 50c to the main pipe 51, the accident that the fire extinguishing fluid spouts into the fire protection target compartment 53a cannot occur. After completing the inspection, manually release the locked state and open the on-off valve V3. In this way, in the event of an unexpected fire, the extinguishing fluid is sent from the main pipe 51 to the fire protection target section 53a through the predetermined selection valve, for example, the selection valve V1. Then, whether or not the on-off valve V3 is closed is detected by switching the on / off state of the switch S similarly to the selection valves V1 and V2 described above. Therefore, it is possible to display or warn the switching of the switch S by an alarm means such as an indicator lamp or a buzzer installed in the monitoring room R. 58c is a piston releaser.

[0025]

[Effect of the device]

 According to the invention of claim 1, even if the lock mechanism of the selection valve is released due to an unexpected act such as mischief or some other reason, the effect can be confirmed by the detection signal of the switch. Therefore, even if the lock mechanism of the selection valve is released due to an unexpected cause when no fire has occurred, by returning the lock mechanism to the locked state, a fire broke out in the specific fire prevention target area. In this case, the fire extinguishing fluid passage of the selection valve corresponding to that section is opened to allow the extinguishing fluid to be discharged only to that section. Therefore, in the fire extinguishing equipment that employs the selection valve of the present invention, it is possible to surely extinguish a fire in a specific fire prevention target compartment, and to avoid confusion and danger in other compartments.

According to the invention of claim 2, when performing various works such as an operation confirmation test and an inspection work of the fire detector, the operation box, the control panel, etc., the selection valve is operated due to an erroneous operation or a short circuit of the signal command line. Even if it starts up, closing the on-off valve in advance not only prevents accidental release of the fire-extinguishing fluid, but also checks whether the on-off valve is open or closed. Since it can be confirmed by the detection signal of the switch, it is possible to prevent the on-off valve from being accidentally left closed.

[Brief description of drawings]

FIG. 1 is a plan view of a lock mechanism in a locked state according to a first embodiment of the first invention.

FIG. 2 is a side view when the lock mechanism is in the locked state in the first embodiment of the first invention.

FIG. 3 is a side view of the lock mechanism in the unlocked state in the first embodiment of the first invention.

FIG. 4 is a side view when the lock mechanism is in the locked state in the second embodiment of the invention of claim 1;

FIG. 5 is a plan view of the lock mechanism in the locked state according to the third embodiment of the invention of claim 1;

FIG. 6 is a side view when the lock mechanism is in the unlocked state in the third embodiment of the invention of claim 1;

FIG. 7 is a vertical cross-sectional side view showing the basic configuration of a selection valve in which a lock mechanism is in a locked state.

FIG. 8 is a vertical cross-sectional side view showing the basic configuration of a selection valve in which a lock mechanism is in an unlocked state.

FIG. 9 is an explanatory view of a fire extinguishing facility according to an embodiment of the invention of claim 2;

[Explanation of symbols]

 1 Valve Box 2 Introduction Hole (Inlet of Fire Extinguishing Fluid Passage) 5 Fire Extinguishing Fluid Passage 6 Valve Body 10 Lock Mechanism 12 Spindle (Movable Part) 13 Lever (Movable Part) 14 Adjusting Screw (Movable Part) 17 Valve Bar (Movable Part) 19) Swing shaft (movable part) 20 Link (movable part) 22 Piston rod (movable part) 23 Engagement pin (movable part) 30 Limit switch (switch) 50a, 50b, 50c Container 51 Main pipe 52a, 52b Branch Piping 53a, 53b Fire protection target area 54 Nozzle 100 Proximity switch (switch) V1, V2 selection valve V3 Open / close valve S, S1, S2 switch

Claims (2)

[Scope of utility model registration request] 1. A valve body has a built-in valve body for opening and closing a fire-extinguishing fluid passage inside the valve body, and the valve body is biased in the opening direction by the pressure of the fire-extinguishing fluid applied to the inlet side of the passage. A fire extinguisher that is configured so that the valve body is locked in the closed position by the lock mechanism, and the movable portion of the lock mechanism performs a certain operation to release the locked state of the valve body. A selection valve for fire extinguishing equipment, comprising a switch that detects that the movable part of the lock mechanism has performed a certain operation to unlock the valve body. 2. The discharge port of the container is connected to a predetermined position on the base end side of the trunk pipe, the branch pipe is connected to a predetermined position on the other end side of the trunk pipe through a selection valve, and the branch pipe is a fire protection target compartment. A fire extinguishing facility in which a nozzle for injecting a fire extinguishing fluid is installed in the wound portion of the main valve, and the selection valve according to claim 1 is diverted as an opening / closing valve, and the opening / closing valve is a container discharge in a main pipe. Fire extinguishing equipment, characterized by being interposed in a pipe line between an outlet connection point and a branch pipe connection point.