JP2019012185A - Silencer, releasing device, quick open valve, fire extinguisher-housing container, and gas-based fire extinguishing system - Google Patents

Abstract

To provide a silencer capable of reducing a releasing noise caused due to a releasing device in a quick open valve.SOLUTION: This invention relates to a silencer 30 used for a releasing device 20, which releases a quick open valve, including: a cylindrical sleeve 31; and one or more through-holes 32 provided in a wall surface of a sleeve 31. The sleeve 31 covers an outer periphery of a wall part 21B where an exhaust port 21a of the releasing device 20 is provided, and the sleeve forms a space 33 between the sleeve and the wall part 21B.SELECTED DRAWING: Figure 3

Description

  The present invention relates to a silencer, an opener, a quick open valve, a fire extinguishing agent storage container, and a gas fire extinguishing equipment that can reduce an open sound generated by an opener of a quick open valve.

Conventionally, a fire extinguisher storage container provided with a quick open valve is known. The extinguishing agent storage container is filled with a gas extinguishing agent such as CO ₂ , N ₂ , extinguishing agent IG541 or a gas extinguishing agent such as a halide at a high pressure. Since the gas extinguishing agent is released as a gas, it can be extinguished without polluting or watering the object. For this reason, the fire extinguisher storage container is used for a gas fire extinguishing facility installed in a communication room, a computer room, a server room, an art museum, a museum, a parking lot, or the like. The quick opening valve quickly opens the valve body when a fire occurs, and quickly supplies the gas extinguishing agent in the extinguishing agent storage container.

  FIG. 7 is a cross-sectional view showing a conventional quick open valve 100. The quick open valve 100 includes an opener 120 that rapidly opens the first valve body 111. The opener 120 mainly includes an opener main body 121, a sealing plate 122, a needle 123, a piston 124, a spring 125, a push button 126, and a safety plug 127.

  The sealing plate 122 maintains the back pressure of the stem 112 provided with the first valve body 111. The needle 123 is attached to the piston 124. The piston 124 is movably accommodated in the opener body 121 while being urged by the spring 125.

  On the rear side of the opener main body 121, a flow path 121A for the starting gas is provided. The high-pressure starter gas supplied to the flow path 121A applies pressure to the back surface of the piston 124 and rapidly advances the piston 124 against the urging force of the spring 125. Further, a pin 124 a is provided behind the piston 124. A push button 126 is screwed to the rear end of the pin 124a. By pushing the push button 126, it is possible to advance the piston 124 manually. The pin 124a is temporarily fixed by a safety stopper 127. The safety stopper 127 is removed from the pin 124a after, for example, a fire extinguisher storage container including the quick release valve 100 is installed at a predetermined location.

  The opener 120 operates by supplying a starting gas or manually operating the push button 126. That is, when starting gas is supplied or the push button 126 is manually operated, the piston 124 moves forward rapidly. As a result, the sealing plate 122 is broken by the needle 123. When the sealing plate 122 is broken, the back pressure of the stem 112 is rapidly reduced, and the first valve body 111 is rapidly opened together with the stem 112. As a result, the high-pressure gas extinguisher filled in a fire extinguisher storage container (not shown) passes through the flow path 110C in the quick release valve 100, and pushes up the second valve body 114 to be opened. Thereafter, the gas extinguishing agent is discharged from an outlet (not shown) of the quick opening valve 100.

  As such a quick opening valve provided with an opener, for example, Japanese Patent No. 34033063 (Patent Document 1), Japanese Patent No. 3796262 (Patent Document 2), Japanese Patent No. 3811675 (Patent Document 3), Patent No. 3821835 (Patent Document 4) and Japanese Patent No. 4417293 (Patent Document 5) have been proposed.

Japanese Patent No. 3403603 Japanese Patent No. 3796262 Japanese Patent No. 3811675 Japanese Patent No. 3821835 Japanese Patent No. 4417293

  However, the above-described conventional opener 120 has a problem of generating a loud plosive sound when the first valve body 111 is opened. FIG. 8 is an enlarged cross-sectional view showing the opener 120 in FIG. 7, and arrows A to C in the figure indicate pressure. In FIG. 8, the 1st valve body 111 is always exposed to the high pressure of a gas fire extinguisher (arrow A). When the sealing plate 122 is broken by the needle 123, the back pressure of the stem 112 is rapidly reduced, and the first valve body 111 is rapidly opened together with the stem 112. Due to the rapid retreat of the stem 112 at this time, the gas behind the stem 112 is rapidly compressed into the opener body 121 (arrow B). The compressed gas is discharged to the outside from the exhaust port 121a provided in the wall 121B of the opener body 121 (arrow C). At this time, the opener 120 generates a loud plosive sound “pump”.

  The loud popping sound produced by the opener 120 not only surprises the people around it, but can also adversely affect precision equipment. For example, the transfer speed of a hard disk drive may change due to the influence of excessive sound pressure. For this reason, when installing a gas fire extinguishing system in a communication room, computer room, server room, etc., where hard disk drives are installed, it was necessary to consider the impact of the popping sound generated by the opener 110. .

Further, the popping sound of the opener 120 increases as the filling pressure of the extinguishing agent storage container (arrow A in FIG. 8) increases. The present inventors tried to increase the storage amount by changing the filling pressure of N ₂ gas stored in the fire extinguishing agent storage container from the conventional 15 MPa to 30 MPa. 30 MPa becomes larger than 15 MPa.

  The present invention has been made in view of the above problems, and a silencer, an opener, a quick open valve, a fire extinguisher storage container, and a gas system that can reduce an open sound generated by the opener of the quick open valve. The purpose is to provide fire extinguishing equipment.

(1) In order to achieve the above object, the silencer of the present invention is a silencer for an opener that opens a quick release valve, and includes a cylindrical sleeve and one or more through holes provided in a wall surface of the sleeve. And the sleeve covers the outer periphery of the wall portion where the exhaust port of the opener is provided and forms a space between the wall portion and the sleeve.

(2) Preferably, in the silencer of the above (1), the sleeve is cylindrical, and the space having a width of 1 mm to 2 mm is formed between the opener and the wall portion provided with the exhaust port. To do.

(3) Preferably, in the silencer of the above (1) or (2), the through hole has a circular shape with a diameter of 1 mm to 3 mm.

(4) Preferably, in the silencer of any one of the above (1) to (3), 1 to 12 of the through holes are provided on the wall surface of the sleeve.

(5) In order to achieve the above object, the opener of the present invention is an opener that opens the valve element in the quick open valve by breaking the seal plate, and is disposed behind the seal plate. A needle to which the needle is attached, a main body in which the piston is movably accommodated, and the silencer of any one of the above (1) to (4), An exhaust port for releasing the internal gas is provided, and the sleeve of the silencer covers the outer periphery of the wall portion and forms a space between the wall portion.

(6) Preferably, in the opener of the above (5), an O-ring is interposed between the wall portion of the main body and the sleeve of the silencer.

(7) In order to achieve the above object, the quick open valve of the present invention is configured to include the opener of the above (5) or (6).

(8) Preferably, the quick opening valve of the above (7) includes a pressure regulating mechanism that opens and closes the valve body in accordance with the pressure on the outlet side.

(9) In order to achieve the above object, a fire extinguisher storage container according to the present invention is a fire extinguisher storage container filled with a gas fire extinguishing agent, and the above (7) or The quick opening valve according to (8) is provided.

(10) Preferably, in the fire extinguisher storage container of the above (9), the gas fire extinguishing agent has a filling pressure at 35 ° C. of 30 MPa.

(11) In order to achieve the above object, the gas fire extinguishing equipment of the present invention is provided at the outlet of the fire extinguishing agent storage container according to (9) or (10) above and the quick open valve of the fire extinguishing agent storage container. A connected pipe, a nozzle connected to the pipe, a fire detector for detecting the occurrence of a fire, a control unit for transmitting a signal based on a detection result of the fire detector, and opening of the quick release valve A starting gas container filled with a gas for starting the gas generator, and an starting device for opening the container valve of the starting gas container based on a signal from the control unit.

  According to the silencer of the present invention, it is possible to reduce the open sound generated by the opener of the quick open valve. As a result, the fire extinguisher storage container provided with the quick open valve can be installed in the vicinity of the communication device room, the computer room, the server room, etc. provided with the hard disk drive. Further, by increasing the filling pressure of the extinguishing agent storage container, it is possible to increase the storage amount of one container and reduce the number of containers required for the gas fire extinguishing equipment.

It is sectional drawing which shows the quick open valve which concerns on embodiment of this invention. It is sectional drawing of another angle of the said quick open valve. It is an expanded sectional view which shows the opener in FIG. It is a partial expanded sectional view which shows the silencer vicinity in FIG. It is a perspective view which shows the silencer which concerns on embodiment of this invention. It is the schematic which shows the gas fire extinguishing equipment which concerns on embodiment of this invention. It is sectional drawing which shows the conventional quick open valve. It is an expanded sectional view which shows the opener in FIG.

  Hereinafter, a silencer, an opener, a quick release valve, a fire extinguisher storage container, and a gas fire extinguishing facility according to an embodiment of the present invention will be described with reference to the drawings.

<Quick open valve>
FIG.1 and FIG.2 is sectional drawing which shows the quick open valve 1 of this embodiment. The quick open valve 1 includes the opener 20 of the present embodiment. The opener 20 includes the silencer 30 of the present embodiment.

  1 and 2, the quick opening valve 1 has a configuration in which first and second valve bodies 11 and 14 are mainly provided in a quick opening valve main body 10 so as to be openable and closable. The quick opening valve body 10 is provided with an inlet 10A and an outlet 10B for a gas extinguishing agent. The inflow port 10 </ b> A and the outflow port 10 </ b> B are communicated with each other by a gas extinguishing agent flow path 10 </ b> C extending in the vertical direction and the horizontal direction in the quick open valve body 10. Below the quick opening valve body 10, a male screw 10E is provided that is screwed into an outlet of a fire extinguisher storage container (not shown). The male screw 10E is screwed into the outlet of the fire extinguisher storage container, whereby the inlet 10A communicates with the inside of the fire extinguisher storage container.

  Two valve seats are provided in the middle of the flow path 10 </ b> C in the quick opening valve body 10. One valve seat is located near the inflow port 10 </ b> A and is opened and closed by the first valve body 11. The other valve seat is located near the outlet 10 </ b> B and is opened and closed by the second valve body 14.

  The first valve body 11 is attached to the front end of a stem 12 that can move in the horizontal direction in the quick opening valve body 10. A spring 13 is provided behind the stem 12. The stem 12 receives the urging force of the spring 13 and presses the first valve body 11 against one valve seat.

  The second valve body 14 is located in the closing valve chamber 10D, and is attached to the lower end of the lower piston 15A that can move in the quick opening valve body 10 in the vertical direction. As shown in FIG. 2, the closing valve chamber 10D in which the second valve body 14 is located communicates with the gas fire extinguishing agent outlet 10B. An upper piston 15B is attached to the upper end of the lower piston 15A. A spring 16 is provided between the lower piston 15A and the upper piston 15B. The spring 16 elastically supports the lower piston 15A and the upper piston 15B, and separates the second valve body 14 from other valve seats. This 2nd valve body 14 comprises the pressure regulation mechanism mentioned later.

  The lower piston 15 </ b> A, the upper piston 15 </ b> B, and the spring 16 are held in the quick release valve body 10 by a bonnet 17. Further, as shown in FIG. 2, the space in which the lower piston 15A, the upper piston 15B, and the spring 16 are accommodated communicates with the outside through the exhaust port 10b.

<< Pressure adjustment mechanism >>
Here, the quick open valve 1 of the present embodiment includes a pressure regulating mechanism that opens and closes the second valve body 14 according to the pressure of the gas fire extinguisher on the outlet 10B side. In addition to the second valve body 14, the lower piston 15A, the upper piston 15B, and the spring 16, the pressure adjusting mechanism includes the first conduction path 15a, the second conduction path 10a, the first pressure receiving surface 15c, and the like shown in FIG. It is constituted by the second pressure receiving surface 15d.

  The first conduction path 15a passes through the second valve body 14, the lower piston 15A, and the upper piston 15B and reaches the first pressure receiving surface 15c at the center of the rear end of the upper piston 15B. The second conduction path 10a allows the flow path 10C between the outlet 10B and the closing valve chamber 10D to communicate with the gap between the upper piston 15B and the bonnet 17. An annular second pressure receiving surface 15d behind the upper piston 15B is positioned in the gap between the upper piston 15B and the bonnet 17.

<< Normal operation >>
First, the normal operation of the quick open valve 1 will be described. In FIG. 1, when the first valve body 11 opens, the high-pressure gas fire extinguisher in the fire extinguisher storage container flows through the flow path 10 </ b> C, passes through the opened second valve body 14, and is closed. It is supplied to the valve chamber 10D. The second valve body 14 adjusts the pressure of the gas extinguishing agent that passes through the closing valve chamber 10D to be constant by a pressure adjusting operation described below. The pressure-adjusted gas extinguishing agent passes through the closing valve chamber 10D and is discharged from the outlet 10B shown in FIG.

<< pressure regulation operation >>
Next, the pressure adjustment operation of the quick open valve 1 will be described. In FIG. 2, when the pressure on the outlet 10B side of the quick open valve 1 becomes higher than a predetermined pressure, the high-pressure gas extinguisher passes through the second conduction path 10a and the second pressure receiving surface 15d of the upper piston 15B. Pressure. Thereby, the upper piston 15B depresses the lower piston 15A against the elastic force of the spring 16, and closes the second valve body 14. As a result, the release of the gas extinguishing agent from the outlet 10B is stopped.

  Thereafter, when the pressure on the outlet 10B side of the quick release valve 1 becomes lower than a predetermined pressure, the pressure applied to the second pressure receiving surface 15d of the upper piston 15B decreases. Thereby, the elastic force of the spring 16 pushes up the lower piston 15A together with the upper piston 15B, and opens the second valve body 14. As a result, the release of the gas extinguishing agent from the outlet 10B is resumed. Thus, the quick open valve 1 opens and closes the second valve body 14 according to the pressure on the outlet 10B side, and keeps the pressure of the gas extinguisher discharged from the outlet 10B constant.

  Here, the pressure regulating mechanism of the present embodiment has a configuration in which the first pressure receiving surface 15c of the upper piston 15B and the pressure receiving surface of the second valve body 14 are communicated with each other through the first conduction path 15a. With this configuration, a balance between the pressure applied to the first pressure receiving surface 15c and the pressure applied to the pressure receiving surface of the second valve body 14 is maintained. As a result, the pressure of the gas extinguisher discharged from the outlet 10B of the quick open valve 1 is stabilized at a substantially constant value.

<Opener>
Next, the opener 20 of this embodiment is demonstrated. In FIG. 1, the opener 20 is attached to the rear of a spring 13 that biases the stem 12. The opener 20 mainly includes an opener main body 21, a sealing plate 22, a needle 23, a piston 24, a spring 25, a push button 26, a safety plug 27, and a silencer 30.

  The sealing plate 22 maintains the back pressure of the stem 12 provided with the first valve body 11. The needle 23 is attached to the piston 24. The piston 24 is movably accommodated in the opener body 21 while being urged by the spring 25.

  A starting gas flow path 21 </ b> A is provided behind the opener body 21. The high-pressure starting gas supplied to the flow path 21A applies pressure to the back surface of the piston 24, and rapidly advances the piston 24 against the urging force of the spring 25. A pin 24 a is provided behind the piston 24. A push button 26 is screwed to the rear end of the pin 24a. By pushing the push button 26, it is possible to advance the piston 24 manually. The pin 24 a is temporarily fixed by a safety stopper 27. The safety stopper 27 is removed from the pin 24a after, for example, a fire extinguisher storage container including the quick release valve 1 is installed at a predetermined location. Such a safety stopper 27 prevents erroneous operation of the push button 26 until the extinguishing agent storage container is installed.

  The opener 20 operates by supplying a starting gas or manually operating the push button 26. That is, when starting gas is supplied or the push button 26 is manually operated, the piston 24 moves forward rapidly. As a result, the sealing plate 22 is broken by the needle 23. When the sealing plate 22 is broken, the back pressure of the stem 12 rapidly decreases, and the first valve body 11 opens rapidly together with the stem 12. As a result, a high-pressure gas extinguisher filled in a fire extinguisher storage container (not shown) passes through the flow path 10C in the quick release valve 1 and pushes up and opens the second valve body 14. Thereafter, the gas extinguisher is discharged from the outlet 10B of the quick open valve 1 shown in FIG.

<Silencer>
As pointed out as a conventional problem, immediately after the sealing plate 22 is broken, the gas behind the stem 12 is rapidly compressed into the opener body 21 by the rapid retraction of the stem 12. If the compressed gas is discharged to the outside from the exhaust port 21a provided in the wall portion 21B of the opener body 21, a large burst sound will be generated. Therefore, the opener 20 of the present embodiment includes a silencer 30 for reducing this plosive sound. 3 is an enlarged sectional view showing the opener 20 in FIG. 1, and FIG. 4 is a partially enlarged sectional view showing the vicinity of the silencer 30 in FIG.

  3 and 4, the silencer 30 has a configuration in which a plurality of through holes 32 are provided on the wall surface of a cylindrical sleeve 31. The sleeve 31 covers the outer periphery of the wall portion 21B provided with the exhaust port 21a of the opener main body 21, and forms a space 33 between the wall portion 21B.

  In order to form this space 33, a step portion 21 b is provided in the wall portion 21 </ b> B of the opener body 21. The outer diameter of the stepped portion 21 b is substantially equal to the inner diameter of the sleeve 31. The silencer 30 is attached to the step portion 21b. Thereby, a space 33 is formed between the wall portion 21 </ b> B and the silencer 30. The width W in the short direction of the space 33 is equal to the protruding amount of the step portion 21b. The width W in the short direction of the space 33 is preferably set in the range of 1 mm to 2 mm, more preferably 1.5 mm to 2 mm.

  As shown in FIG. 4, the exhaust port 21 a of the opener body 21 opens at a position on the front side of the space 33. On the other hand, the through hole 32 of the silencer 30 is provided at a position on the rear side of the sleeve 31. As the exhaust port 21a and the through-hole 32 are separated from each other, the moving distance of the gas discharged from the exhaust port 21a becomes longer and the silencer 30 has a better silencing effect. An O-ring is interposed between the sleeve 31 and the opener body 21 in order to prevent gas from leaking from the front end edge of the sleeve 31.

  The through hole 32 of the present embodiment is circular, but may be elliptical or polygonal. The diameter D of the through hole 32 is preferably set within a range of 1 mm to 3 mm, more preferably 1 mm to 1.5 mm. The number of through holes 32 is preferably set in the range of 1 to 12, more preferably 1 to 3. The perspective view of FIG. 5 shows an example of a silencer 30 in which twelve through holes 32 are provided in the sleeve 31.

  As the diameter D of the through-hole 32 decreases and the number of the through-holes 32 decreases, the silencer 30 has a better silencing effect, but the operating speed of the stem 12 decreases. Therefore, the diameter D and the number of the through holes 32 are set so that both the silencing effect of the silencer 30 and the operating speed of the stem 12 are good.

<< Mute effect >>
The silencing effect of the silencer 30 will be described with reference to FIG. Arrows A to C in the figure indicate pressure. In FIG. 3, the 1st valve body 11 is always exposed to the high pressure of a gas fire extinguisher (arrow A). When the sealing plate 22 is broken by the needle 23, the back pressure of the stem 12 rapidly decreases, and the first valve body 11 opens rapidly together with the stem 12. Due to the rapid retreat of the stem 12 at this time, the gas behind the stem 12 is rapidly compressed into the opener body 21 (arrow B). The compressed gas is discharged from the exhaust port 21 a provided in the wall portion 21 </ b> B of the opener body 21 into the space 33 covered with the sleeve 31.

  The sound pressure of the gas discharged from the exhaust port 21a is attenuated by the resistance when the gas passes through the narrow space 33. Thereby, the sound pressure of the gas discharged | emitted from the exhaust port 21a is reduced. Thereafter, the gas that has passed through the space 33 is discharged to the outside from the plurality of through holes 32 set to a predetermined diameter (arrow C). The sound pressure of the gas released from the through hole 32 to the outside is attenuated by the resistance when this gas passes through the small through hole 32. Thereby, the sound pressure of the gas discharged from the through hole 32 is reduced. As a result, the sound generated by the opener 20 becomes an injection sound “push”.

  In addition, the silencer 30 is good also as a structure which filled the sound absorption material which can let gas pass in the space 33. FIG. As the sound absorbing material filled in the space 33, for example, polyurethane foam, polyurethane fiber, polyester fiber, aluminum fiber, short glass fiber, glass wool, or the like can be used.

<Example of quick open valve>
The sound pressure level of the opening sound was measured using an example of a quick opening valve in which a silencer was provided in the opener and a comparative example of a quick opening valve in which the silencer was not provided in the opener. The measurement results are shown in Table 1.

“Primary side pressure” in Table 1 assumes the filling pressure of the extinguishing agent storage container. A booster pump was connected to the inlet of the quick opening valve, and pressures of 30 MPa and 15 MPa were applied to the quick opening valve of the example and to the quick opening valve of the comparative example. The “starting gas pressure” in Table 1 is the pressure of the starting gas supplied to the flow path of the opener. The initiation gas, N ₂ gas was used in the starting N ₂ cylinder. The silencer of the embodiment has a configuration in which six through holes having a diameter of 1 mm are provided in a cylindrical sleeve. The “sound pressure level” in Table 1 was measured at a distance of 1 m from the quick opening valve using a normal sound level meter “NL-27” manufactured by Rion Corporation (registered trademark).

  As a result of the measurement, it was confirmed that the quick opening valve of the example had a sound pressure level of 97.3 dB of the opening sound under the condition that the primary pressure was 30 MPa, and a noise reduction effect in which the sound pressure level was less than 100 dB. Sounds with a sound pressure level below 100 dB do not affect the operation of the hard disk drive.

  On the other hand, in the quick open valve of the comparative example, the sound pressure level of the open sound was 109.1 dB on the condition that the primary pressure was 30 MPa. In addition, the quick open valve of the comparative example had a sound pressure level of 105.6 dB under the condition that the primary pressure was 15 MPa. The comparative example produces a sound exceeding 100 dB regardless of the conditions of 30 MPa and 15 MPa. The sound pressure level of 97.3 dB in the example is measured under the condition where the primary pressure is 30 MPa, but is smaller than the sound pressure level of 105.6 dB in the comparative example measured under the condition where the primary pressure is 15 MPa. .

  Furthermore, the opening sound of the quick opening valve of the example was an injection sound “push”, and it was not a kind of sound that surprised people around. On the other hand, the opening sound of the quick opening valve of the comparative example is a plosive sound “pantsu”, which is a kind of sound that surprises the surrounding people.

<Gas fire extinguishing equipment>
Next, a gas fire extinguishing facility according to an embodiment of the present invention will be described with reference to FIG. FIG. 6 is a schematic view showing the gas fire extinguishing equipment 2 of the present embodiment. The gas fire extinguishing equipment 2 includes fire extinguishing agent storage containers 47A to 47E of the present embodiment.

The gas fire extinguishing equipment 2 of the present embodiment monitors a plurality of places such as a communication room, a computer room, a server room, and the like, and in a place where a fire has occurred, CO ₂ , N ₂ , a fire extinguishing agent IG541, etc. Gas extinguishing agent such as active gas or halide is automatically emitted.

  In FIG. 6, the gas fire extinguishing equipment 2 includes a plurality of fire detectors 41, a control unit 42, first and second starting gas containers 43A and 43B, two starting devices 44A and 44B, and a plurality of check devices. The valve 45, the 1st and 2nd selection valve 46A, 46B, the container unit 47, the some nozzle 48, the starting gas piping 51-53, and the fire extinguisher piping 61-63 are included.

  In the container unit 47, five fire extinguishing agent storage containers 47A to 47E are accommodated. Each of the five fire extinguishing agent storage containers 47A to 47E is provided with the quick opening valve 1 of the present embodiment described above.

  Among the components of the gas fire extinguishing equipment 2, a part of the fire detector 41, the nozzle 48, and the fire extinguishing agent pipe 62 is installed in the server room 70. A part of the extinguishing agent pipe 63 is installed in a communication device room, a computer room, another server room, etc. (not shown). Other components of the gas fire extinguishing equipment 2 are installed in, for example, a container storage.

  The plurality of fire detectors 41 are installed above the server room 70. Each fire detector 41 monitors different areas of the server room 70 and senses smoke and heat from the fire. The control unit 42 is communicably connected to the fire detector 41 of the server room 70 and other fire detectors (not shown) installed at locations other than the server room 70 by wired or wireless. A dotted line in FIG. 6 indicates a communication path of a signal transmitted and received by the control unit 42.

  The first and second starter gas containers 43A and 43B are filled with starter gas for starting the opener 20 of the quick open valve 1. An activation device 44A is provided in the container valve of the first activation gas container 43A, and an activation device 44B is provided in the container valve of the second activation gas container 43B. Each activation device 44A, 44B individually opens the container valves of the first and second activation gas containers 43A, 43B based on a signal from the control unit 42.

  The container valve of the first starting gas container 43 </ b> A is connected to the starting gas pipe 51. A first selection valve 46 </ b> A is connected to the starting gas pipe 51 via a check valve 45. The end of the starting gas pipe 51 is connected to a common starting gas pipe 53 via a check valve 45. That is, the starting gas released from the container valve of the first starting gas container 43A flows through the starting gas pipe 51 toward the first selection valve 46A and the common starting gas pipe 53, and does not flow back through the starting gas pipe 51.

  Similarly to the above, the container valve of the second starting gas container 43B is connected to another starting gas pipe 52. A second selection valve 46 </ b> B is connected to the starting gas pipe 52 via a check valve 45. The end of the starting gas pipe 52 is connected to a common starting gas pipe 53 via a check valve 45. That is, the starting gas released from the container valve of the second starting gas container 43B flows through the starting gas pipe 52 toward the second selection valve 46B and the common starting gas pipe 53, and does not flow back through the starting gas pipe 52.

  The first and second selection valves 46A and 46B are both opened by supplying the starting gas. When the first selection valve 46A is opened, the extinguishing agent pipe 61 and the extinguishing agent pipe 62 communicate with each other. On the other hand, the extinguishing agent pipe 61 and the extinguishing agent pipe 63 communicate with each other by opening the second selection valve 46B.

  The opener 20 of each quick open valve 1 provided in the five extinguishing agent storage containers 47A to 47E is connected in series to the common starting gas pipe 53 described above. The starting gas flowing through the common starting gas pipe 53 is supplied to the opener 20 of each quick open valve 1 in the order of the extinguishing agent storage containers 47A, 47B, 47C, 47D and 47E. That is, when a fire occurs, each quick open valve 1 is rapidly opened in the order of the extinguishing agent storage containers 47A, 47B, 47C, 47D and 47E. Then, the gas extinguishing agents in all the extinguishing agent storage containers 47 </ b> A to 47 </ b> E are released to the common extinguishing agent pipe 61. Thereafter, the gas extinguishing agent is discharged from a plurality of nozzles 48 provided in the extinguishing agent piping 62 or a plurality of nozzles (not shown) provided in the other extinguishing agent piping 63 to a place where a fire has occurred.

<< Equipment operation >>
Next, operation | movement of the gas fire extinguishing equipment 2 of this embodiment is demonstrated. For example, when a fire occurs in the server room 70, at least one of the plurality of fire detectors 41 detects smoke or heat due to the fire and transmits a signal to the control unit 42. Based on the signal received from the fire detector 41, the control unit 42 transmits a signal to one activation device 44A.

  The activation device 44A operates by receiving a signal from the control unit 42, and opens the container valve of the first activation gas container 43A. Thereby, the first starting gas container 43 </ b> A releases the starting gas into the starting gas pipe 51. The starting gas discharged to the starting gas pipe 51 is supplied to the first selection valve 46A. As a result, the first selection valve 46A opens, and the extinguishing agent pipe 61 and the extinguishing agent pipe 62 communicate with each other.

  On the other hand, the starting gas released to the starting gas pipe 51 flows through the common starting gas pipe 53 and is supplied to the opener 20 of each quick open valve 1 provided in the five extinguishing agent storage containers 47A to 47E. Is done. Thereby, each quick open valve 1 is rapidly opened in the order of the extinguishing agent storage containers 47A, 47B, 47C, 47D and 47E. The gas extinguishing agents in all the extinguishing agent storage containers 47 </ b> A to 47 </ b> E are discharged to the common extinguishing agent piping 61, and are discharged from the plurality of nozzles 48 into the server chamber 70 through the first selection valve 46 </ b> A and the extinguishing agent piping 62. Is done. As a result, the fire generated in the server room 70 is extinguished.

  If a fire occurs in a place other than the server room 70, another fire detector (not shown) transmits a signal to the control unit 42. The control unit 42 transmits a signal to the other activation device 44B based on the signal received from the other fire detector.

  The activation device 44B operates by receiving a signal from the control unit 42, and opens the container valve of the second activation gas container 43B. As a result, the second starting gas container 43 </ b> B releases the starting gas to the starting gas pipe 52. The starting gas discharged to the starting gas pipe 52 is supplied to the second selection valve 46B. As a result, the second selection valve 46B opens and the extinguishing agent pipe 61 and the extinguishing agent pipe 63 communicate with each other.

  On the other hand, the starting gas released to the starting gas pipe 52 flows through the common starting gas pipe 53 and is supplied to the opener 20 of each quick open valve 1 provided in the five extinguishing agent storage containers 47A to 47E. Is done. Thereby, each quick open valve 1 is rapidly opened in the order of the extinguishing agent storage containers 47A, 47B, 47C, 47D and 47E. Gas extinguishing agents in all the extinguishing agent storage containers 47A to 47E are discharged to a common extinguishing agent pipe 61, and a place where a fire has occurred from a plurality of nozzles (not shown) through the second selection valve 46B and the extinguishing agent pipe 63 To be released.

<Effect>
As described above, according to the silencer 30 of the embodiment, the open sound generated by the opener 20 can be an injection sound having a sound pressure level of less than 100 dB. Thus, the fire extinguisher storage containers 47A to 47B equipped with the quick open valve 1 can be installed in or near the communication device room, the computer room, the server room 70, etc. without worrying about the influence on the hard disk drive. It becomes possible. In addition, by increasing the filling pressure of the extinguishing agent storage containers 47A to 47B from the conventional 15 MPa to 30 MPa, it is possible to increase the storage amount of one container and reduce the number of containers required for the gas fire extinguishing equipment 2. It becomes possible.

DESCRIPTION OF SYMBOLS 1 Quick open valve 10 Quick open valve main body 10A Inflow port 10B Outlet 10C Gas fire extinguisher flow path 10D Closing valve chamber 10E Male screw 10a Second conducting path 10b Exhaust port 11 First valve body 12 Stem 13 Spring 14 Second valve body 15A Lower piston 15B Upper piston 15a First conducting path 15c First pressure receiving surface 15d Second pressure receiving surface 16 Spring 17 Bonnet 20 Opener 21 Opener body 21A Flow path of starting gas 21B Wall portion 21a Exhaust port 21b Stepped portion 22 Sealing plate 23 Needle 24 Piston 24a Pin 25 Spring 26 Push button 27 Safety plug 30 Silencer 31 Sleeve 32 Through-hole 33 Space 2 Gas fire extinguishing equipment 41 Fire detector 42 Control unit 43A First start gas container 43B Second start gas container 44A, 44B Starter 45 Check valve 46 A 1st selection valve 46B 2nd selection valve 47 Container unit 47A-47E Extinguishing agent storage container 48 Nozzle 51-53 Starting gas piping 61-63 Extinguishing agent piping 70 Server room

Claims (11)

A silencer for an opener that opens a quick release valve,
A cylindrical sleeve, and one or more through holes provided in the wall surface of the sleeve,
The silencer is characterized in that the sleeve covers an outer periphery of a wall portion provided with an exhaust port of the opener and forms a space between the sleeve portion and the wall portion.   The silencer according to claim 1, wherein the sleeve is a cylinder, and the space having a width of 1 mm to 2 mm is formed between the sleeve and a wall portion provided with an exhaust port of the opener.   The silencer according to claim 1 or 2, wherein the through hole is a circle having a diameter of 1 mm to 3 mm.   The silencer according to any one of claims 1 to 3, wherein 1 to 12 through holes are provided on a wall surface of the sleeve. An opener that opens the valve body in the quick release valve by breaking the sealing plate,
A needle disposed behind the sealing plate;
A piston to which the needle is attached;
A main body in which the piston is movably accommodated;
Including the silencer according to any one of claims 1 to 4,
The wall portion of the main body is provided with an exhaust port for escaping internal gas,
An opener in which a sleeve of the silencer covers an outer periphery of the wall portion and forms a space between the wall portion.   The opener according to claim 5, wherein an O-ring is interposed between a wall portion of the main body and a sleeve of the silencer.   A quick opening valve comprising the opener according to claim 5 or 6.   The quick opening valve according to claim 7, further comprising a pressure adjusting mechanism that opens and closes the valve body in accordance with the pressure on the outlet side. A fire extinguisher storage container filled with a gas fire extinguisher,
The fire-extinguishing agent storage container provided with the quick open valve according to claim 7 or 8 as a container valve of the fire-extinguishing agent storage container.   The fire-extinguishing agent storage container according to claim 9, wherein a filling pressure of the gas extinguishing agent at 35 ° C. is 30 MPa. A fire extinguisher storage container according to claim 9 or 10,
Piping connected to the outlet of the quick open valve of the extinguishing agent storage container;
A nozzle connected to the pipe;
A fire detector that detects the occurrence of a fire;
A control unit for transmitting a signal based on the detection result of the fire detector;
An activation gas container filled with a gas for activating the opener of the quick open valve;
A gas fire extinguishing system including an activation device that opens a container valve of the activation gas container based on a signal from the control unit.