JP7832071B2 - Fire extinguishing equipment - Google Patents

Description

This invention relates to a fire extinguishing system (packaged fire extinguishing system) comprising a gas container for pressurized gas and a fire extinguishing agent container for a fire extinguishing agent.

Conventionally, packaged fire extinguishing systems are known that consist of a gas container holding pressurized gas and a fire extinguishing agent container holding fire extinguishing agent (see Patent Document 1). In conventional packaged fire extinguishing systems, high-pressure gas is supplied from the gas container to the fire extinguishing agent container, and the fire extinguishing agent in the fire extinguishing agent container is released into the atmosphere.

Packaged fire extinguishing systems are stationary equipment. In conventional packaged fire extinguishing systems (general packaged fire extinguishing systems other than those described in Patent Document 1), rising ambient temperatures can increase the pressure of the air and extinguishing agent inside the extinguishing agent container, potentially causing the extinguishing agent to leak. As a countermeasure, packaged fire extinguishing systems are sometimes installed in locations with relatively little temperature fluctuation. On the other hand, the packaged fire extinguishing system described in Patent Document 1 prevents leakage of the extinguishing agent due to temperature increases by providing a bypass pipe and valve.

Japanese Patent Publication No. 2020-48881

By the way, conventional packaged fire extinguishing systems have a complex structure because they incorporate bypass pipes and valves. This makes conventional packaged fire extinguishing systems expensive, and also reduces the available space for piping and other components within the system's casing.

The present invention aims to provide a user-friendly fire extinguishing system with a simple configuration that prevents leakage of the extinguishing agent due to temperature rise, and allows for ample space within the casing of a packaged fire extinguishing system.

A fire extinguishing system according to an aspect of the present invention includes a gas container into which pressurized gas enters an internal space, a fire extinguishing agent container into which a fire extinguishing agent enters the internal space such that an upper gas space is formed in the upper part of the internal space where gas is present, a first pipe connecting the internal space of the gas container and the internal space of the fire extinguishing agent container for supplying pressurized gas from the gas container to the internal space of the fire extinguishing agent container, an on/off valve for opening and closing the flow path of the first pipe, and a mechanism for discharging the fire extinguishing agent from the internal space of the fire extinguishing agent container and the outside of the fire extinguishing agent container. The fire extinguishing system is configured such that the first pipe and the second pipe are connected, and the opening at the end of the first pipe's internal space is located within the fire extinguishing agent inside the first pipe, and the second pipe has a through-hole that penetrates the flesh portion of the second pipe located in the upper gas space. With the on/off valve opening the flow path of the first pipe, the pressurized gas is supplied from the gas container to the internal space of the fire extinguishing agent container, and the fire extinguishing agent is released to the outside of the fire extinguishing agent container through the second pipe.

Furthermore, in a fire extinguishing system according to an embodiment of the present invention, a sealing plate is provided in the middle of the second piping. In this fire extinguishing system, when the on-off valve closes the flow path of the first piping, the sealing plate closes the flow path of the second piping. When the on-off valve opens the flow path of the first piping, the pressure of the gas supplied from the gas container increases the pressure of the extinguishing agent in the extinguishing agent container. This increase in pressure of the extinguishing agent causes the sealing plate to break, opening the flow path of the second piping and releasing the extinguishing agent to the outside of the extinguishing agent container.

Furthermore, in a fire extinguishing system according to an embodiment of the present invention, the sealing plate comprises an annular outer periphery and a sealing plate body formed in a film-like manner, with its thickness direction coinciding with the extension direction of the central axis of the annular periphery, and positioned inside the annular periphery. In this fire extinguishing system according to an embodiment of the present invention, the sealing plate body is destroyed when the on-off valve opens the flow path of the first piping.

Furthermore, the fire extinguishing system according to an aspect of the present invention has a housing that houses the gas container, the fire extinguishing agent container, the first piping, the on-off valve, and the second piping inside, and the housing is configured to include a rectangular box-shaped housing body, a rectangular flat first housing lid that opens and closes the opening of the housing body, and a rectangular flat second housing lid that opens and closes the opening of the housing body, wherein one predetermined rectangular side of the first housing lid engages with the housing body at one predetermined side of the rectangular opening of the housing body, and the portion at which it is engaged rotates relative to the housing body. The second housing lid is designed such that one predetermined rectangular side of the second housing lid engages with the housing body at the other predetermined side of the rectangular opening of the housing body, which is opposite to the side with which the first housing lid engages. The second housing lid rotates relative to the housing body at this engaged portion. The ratio of the dimensions of the first housing lid to the dimensions of the second housing lid in the direction connecting the predetermined side of the rectangular opening of the housing body and the predetermined other side of the rectangular opening of the housing body is within the range of 2:8 to 4:6.

Furthermore, in the fire extinguishing system according to an embodiment of the present invention, when the opening of the housing body is closed by the first housing lid and the second housing lid, when the opening of the housing body, the first housing lid, and the second housing lid are viewed, at least one of the following is provided on the second housing lid portion, in the central portion in the direction connecting a predetermined side of the rectangular opening of the housing body and a predetermined other side of the rectangular opening of the housing body: an indicator light, a transmitter, an indicator light integrated transmitter, or a bell hole.

Furthermore, in the fire extinguishing system according to an embodiment of the present invention, the fire extinguishing agent container is formed in a cylindrical shape, and the fire extinguishing agent container is installed in the housing such that the height direction of the cylinder of the fire extinguishing agent container is vertical, and two fire extinguishing agent containers are provided, and the two fire extinguishing agent containers are spaced apart from each other in the lateral direction of the housing, and their positions are approximately the same in the front-to-back direction of the housing.

Furthermore, in the fire extinguishing system according to an embodiment of the present invention, the gas container is formed in a cylindrical shape, and the on-off valve is provided at the upper end of the gas container. The on-off valve is opened and closed by rotating the handle of the on-off valve, and the gas container is installed inside the housing such that the handle of the on-off valve is located on the opening side of the housing body and the lower end is located on the rear side of the housing body.

According to this invention, a simple configuration can prevent leakage of the fire extinguishing agent due to temperature rise, allowing for more space within the casing of the packaged fire extinguishing system, resulting in ease of use.

This is a perspective view of a fire extinguishing system according to an embodiment of the present invention. This is a perspective view of a fire extinguishing system according to an embodiment of the present invention, showing the second housing lid in an open state. This is a view from the direction of arrow III in Figure 1. This is a view from arrow IV in Figure 1. This diagram corresponds to Figure 3 and shows the state after the first housing cover and the second housing cover have been removed. This is a view along the line VI-VI in Figure 2. This is a system diagram of a fire extinguishing system according to an embodiment of the present invention. This is an enlarged view of section VIII in Figure 7. Figure 7 is an enlarged view of section IX. This figure shows a modified example of part X shown in Figure 9. Figure 9 shows a sealing plate, where (b) is a view taken along arrow XI in (a). This is a perspective view showing the installation configuration of the legs installed on the housing of a fire extinguishing system according to an embodiment of the present invention. This diagram corresponds to Figure 7 and is a system diagram of a modified fire extinguishing system.

As shown in Figures 5 to 9, the fire extinguishing system (package-type fire extinguishing system) 1 according to an embodiment of the present invention comprises a gas container 3, a fire extinguishing agent container 5, a first pipe 7, an on-off valve 9, and a second pipe 11.

For the sake of explanation, in this explanation, a predetermined horizontal direction in a fire extinguishing system will be defined as the lateral direction, a predetermined horizontal direction perpendicular to the lateral direction will be defined as the front-rear direction, and a direction perpendicular to both the lateral and front-rear directions will be defined as the up-down direction.

The internal space of gas container 3 (gas container internal space) contains pressurized gas (e.g., nitrogen gas). The internal space 13 of fire extinguishing agent container 5 (fire extinguishing agent container internal space) contains fire extinguishing agent 15. When the fire extinguishing agent 15 is placed in the fire extinguishing agent container internal space 13, an upper gas space 17 is formed above the fire extinguishing agent container internal space 13, which is a space containing gas (e.g., air). The fire extinguishing agent 15 enters the space below the fire extinguishing agent container internal space 13, excluding the upper gas space 17. As the fire extinguishing agent 15, for example, liquid fire extinguishing agents such as water, reinforcing liquid, mechanical foam (aqueous film formation), water containing wetting agents, water containing type 3 wetting agents, and detection agents No. 11 to 1 are used.

The first pipe 7 connects the internal space 13 of the gas container 3 to the internal space 13 of the fire extinguishing agent container 5 in order to supply pressurized gas from the gas container 3 to the internal space 13 of the fire extinguishing agent container 5. Furthermore, the opening at the end of the first pipe 7 within the internal space 13 of the fire extinguishing agent container 5 is located in the upper gas space 17 formed when the fire extinguishing agent 15 enters the internal space 13 of the fire extinguishing agent container.

The on-off valve 9 is installed, for example, at the gas outlet of the gas container 3. Alternatively, the on-off valve 9 may be installed in the middle of the first piping 7. The on-off valve 9 opens and closes the flow path of the first piping 7.

The second pipe 11 connects the internal space 13 of the fire extinguishing agent container 5 to the outside of the fire extinguishing agent container 5 in order to release the fire extinguishing agent 15 from the internal space 13 into the atmosphere. The opening at the end of the second pipe 11 within the internal space 13 of the fire extinguishing agent container 5 is located within the fire extinguishing agent 15 contained within the internal space 13 of the fire extinguishing agent container 5.

The second pipe 11 enters the fire extinguishing agent container 5 from its upper end, for example, and extends vertically within the internal space 13 of the fire extinguishing agent container 5. The portion of the second pipe 11 extending vertically within the internal space 13 of the fire extinguishing agent container is called the siphon pipe 19. The opening at the lower end of the second pipe 11 within the internal space 13 of the fire extinguishing agent container becomes the opening located within the fire extinguishing agent 15 mentioned above. The second pipe 11 also extends a predetermined length outside the fire extinguishing agent container 5.

As shown in Figure 8, the second pipe 11 is provided with a through-hole 21. The through-hole 21 is provided in the second pipe 11 so as to penetrate the wall portion located in the upper gas space 17. Furthermore, the through-hole 21 has a small diameter, for example, 3 mm or less, and has a predetermined large flow resistance to the flow of fluids such as gases and liquids. To obtain the desired performance by increasing the flow resistance, a diameter of 1 mm or less is preferable, and more preferably 0.5 mm or less.

In the fire extinguishing system 1, with the shut-off valve 9 closing the flow path of the first pipe 7, the upper gas space 17 is filled with atmospheric pressure gas (for example, air or nitrogen), and the fire extinguishing agent 15 is not released through the second pipe 11 into the space outside the fire extinguishing agent container 5.

Furthermore, in the fire extinguishing system 1, with the on/off valve 9 open the flow path of the first pipe 7, pressurized gas is supplied from the gas container 3 to the internal space 13 of the fire extinguishing agent container 5 via the first pipe 7. Then, in the fire extinguishing system 1, the pressure in the internal space 13 of the fire extinguishing agent container 5 increases, and the fire extinguishing agent 15 is released through the second pipe 11 into the space outside the fire extinguishing agent container 5.

Here, we will further explain the flow resistance of the through-hole 21. A cylindrical second pipe 11 (siphon tube 19) extends vertically within the upper gas space 17. The portion of the space inside the siphon tube 19 that is located at the same vertical position as the upper gas space 17 is referred to as the upper space 23 within the second pipe (see Figure 8). The through-hole 21 connects the upper space 23 within the second pipe to the upper gas space 17.

Let's assume that the on-off valve 9 closes the flow path of the first pipe 7, and that the difference between the gas pressure in the upper gas space 17 and the gas pressure in the upper space 23 of the second pipe is small (for example, 0.05 MPa or less). Furthermore, let's assume that the change in the difference between the gas pressure in the upper gas space 17 and the gas pressure in the upper space 23 of the second pipe due to temperature changes at the installation location of the fire extinguishing equipment 1 is gradual (it changes through an almost quasi-static process). Under these assumptions, gas (air) flows slowly through the through-hole 21, eliminating the difference between the gas pressure in the upper gas space 17 and the gas pressure in the upper space 23 of the second pipe.

When the shut-off valve 9 opens the flow path of the first pipe 7, high-pressure gas is supplied to the upper gas space 17. This allows gas to flow through the through-hole 21 even when the pressure difference between the gas in the upper gas space 17 and the gas in the upper space 23 of the second pipe increases rapidly (for example, to 5 MPa or more).

However, due to the flow resistance of the through-hole 21, the gas pressure in the upper gas space 17 hardly decreases, and the gas pressure in the upper space 23 of the second pipe hardly increases. That is, the ratio of the gas pressure in the upper gas space 17 to the gas pressure in the upper space 23 of the second pipe hardly changes. As a result, the gas pressure in the upper gas space 17 pushes the fire extinguishing agent 15, causing it to pass through the second pipe 11 and be released into the space outside the fire extinguishing agent container 5.

In the fire extinguishing system 1, a sealing plate (rupture disc) 25 is provided in the middle of the second pipe 11, as shown in Figure 9, etc. When the shut-off valve 9 is closed to the flow path of the first pipe 7, the sealing plate 25 is closed to the flow path of the second pipe 11. When the shut-off valve 9 is open to the flow path of the first pipe 7, the pressure of the extinguishing agent 15 in the extinguishing agent container 5 increases due to the pressure of the gas supplied from the gas container 3. Then, the pressure of the extinguishing agent 15 increases, causing the sealing plate 25 to break, opening the flow path of the second pipe 11, and releasing the extinguishing agent 15 into the space outside the extinguishing agent container 5.

The sealing plate 25 shown in Figure 9 is formed in the shape of a thin disc. Here, the sealing plate 25 may be configured to include an outer peripheral portion 27 and a sealing plate body portion 29, as shown in Figures 10 and 11. The outer peripheral portion 27 is formed in an annular shape (for example, a torus shape like an O-ring). The outer peripheral portion 27 also functions as a packing. The sealing plate body portion 29 is formed in the shape of a thin film, and is positioned inside the ring of the outer peripheral portion 27 such that its thickness direction coincides with the extension direction of the central axis of the ring, and it closes the space inside the ring of the outer peripheral portion 27.

Furthermore, with the shut-off valve 9 open the flow path of the first pipe 7, the seal plate body 29 is destroyed by the increase in pressure of the fire extinguishing agent 15, opening the flow path of the second pipe 11. The seal plate 25 is integrally molded from an elastic material such as silicone rubber. Also, as shown in Figure 11, the seal plate body 29 has a recess 30 formed to facilitate the aforementioned destruction. The recess 30 consists of two "V"-shaped grooves, and when viewed in the thickness direction of the seal plate body 29, the recess 30 forms an "X" shape.

The recesses 30 are provided on both sides of the sealing plate body 29 in the thickness direction. When viewed in the thickness direction of the sealing plate body 29, these recesses 30 overlap. Furthermore, when viewed in the thickness direction of the sealing plate body 29, the four ends of the two "X"-shaped line segments of the recesses 30 are located on the inner circumference of the outer periphery 27.

Furthermore, the fire extinguishing system 1 is configured with a housing 31, as shown in Figures 1 to 6. The housing 31 houses the gas container 3, the fire extinguishing agent container 5, the first piping 7, the on-off valve 9, and the second piping 11 within its internal space 33.

The housing 31 comprises a rectangular, box-shaped housing body 35, a rectangular, flat first housing lid (first door) 39 that opens and closes the opening 37 of the housing body, and a rectangular, flat second housing lid (second door) 41 that also opens and closes the opening 37 of the housing body 35. The first housing lid 39 and the second housing lid 41 are configured to completely close the opening 37 of the housing body 35.

The first housing lid portion 39 has one predetermined rectangular side that engages with the housing body portion 35 at one predetermined side of the rectangular opening 37 of the housing body portion 35, and rotates relative to the housing body portion 35 at this engaged portion (first engaging side) 43.

The second housing lid 41 also engages with the housing body 35 at a predetermined rectangular edge, which is opposite to the edge of the rectangular opening 37 of the housing body 35 with which the first housing lid 39 is engaged. This engaged portion (second engaging edge) 45 rotates relative to the housing body 35.

The direction connecting one predetermined side (first engaging side) 43 of the rectangular opening 37 of the housing body 35 and the other predetermined side (second engaging side) 45 of the rectangular opening 37 of the housing body 35 is the lateral direction. Furthermore, the ratio of the dimension L1 of the first housing lid 39 to the dimension L2 of the second housing lid 41 in the lateral direction is within the range of 2:8 to 4:6 (see Figure 3).

The above ratio is preferably in the range of 2.5:7.5 to 3.5:6.5, more preferably in the range of 2.8:7.2 to 3.2:6.8, and ideally 3:7. Alternatively, without specifying the above ratio, the configuration may be such that the lateral dimension of the second housing lid 41 is larger than the lateral dimension of the first housing lid 39.

Furthermore, when viewing the fire extinguishing equipment 1 (housing 31) from the front, the first housing cover 39 is located on the left side, and the second housing cover 41 is located on the right side. To explain further, the first of the four sides of the opening 37 of the housing body 35 extends vertically at the left end of the opening 37 of the housing body 35. The second of the four sides of the opening 37 of the housing body 35 extends vertically at the right end of the opening 37 of the housing body 35. The third of the four sides of the opening 37 of the housing body 35 extends horizontally at the upper end of the opening 37 of the housing body 35. The fourth of the four sides of the opening 37 of the housing body 35 extends horizontally at the lower end of the opening 37 of the housing body 35. The first engaging edge 43 is located at the first edge, and the second engaging edge 45 is located at the second edge.

When the opening 37 of the housing body 35 is closed by the first housing lid 39 and the second housing lid 41, the opening 37 of the housing body 35, the first housing lid 39, and the second housing lid 41 are viewed. At least one of the following is provided in the center in the lateral direction: an indicator light 47, a transmitter (not shown), an indicator light integrated transmitter (not shown), or a bell hole (not shown). The lateral direction is the direction connecting one predetermined side of the rectangular opening 37 of the housing body 35 to another predetermined side of the rectangular opening 37 of the housing body 35. The state in which the opening 37 of the housing body 35 is closed by the first housing lid 39 and the second housing lid 41 is maintained unless a predetermined external force is applied to the housing lids 39 and 41.

A second housing cover 41 is located where the indicator light 47, transmitter, integrated indicator light transmitter, and bell hole are situated in the central part of the above-mentioned structure. The indicator light 47, transmitter, integrated indicator light transmitter, and bell hole are all located on the second housing cover 41. Reference numeral 49 in Figure 3, etc., indicates a handle for opening and closing the second housing cover 41.

The fire extinguishing agent container 5 is formed in a cylindrical shape. The fire extinguishing agent container 5 is installed inside the housing 31 with the height direction of the cylinder of the fire extinguishing agent container 5 being the vertical direction. Two fire extinguishing agent containers 5 are provided. The two fire extinguishing agent containers 5 are spaced apart from each other in the lateral direction of the housing 31, their positions are roughly the same in the front-to-back direction of the housing 31 (depth direction of the housing body 35), and their positions are also roughly the same in the vertical direction. Furthermore, the two fire extinguishing agent containers 5 are arranged symmetrically with respect to a plane perpendicular to the lateral direction and containing the center of the housing 31. As a result, a space (central space) 51 is formed inside the housing 31 between the two fire extinguishing agent containers 5, where a gas container 3 or the like is installed (see Figure 5). Furthermore, when the gas container 3 is installed in the lower part of the space (central space) 51 where the gas container 3 is installed, a space is formed in the upper part of the space (central space) 51 to accommodate equipment such as the indicator light 47, transmitter, indicator light integrated transmitter, bell, and bell hole provided on the second housing lid 41.

The gas container 3 is also cylindrical, and an on-off valve 9 is provided at its upper end. The valve 9 is opened and closed by manually rotating the handle 53 of the valve 9. The height of the gas container 3 is lower than the height of the fire extinguishing agent container 5, and the diameter of the gas container 3 is smaller than the diameter of the fire extinguishing agent container 5 (see Figure 5).

The gas container 3 is installed inside the housing 31 such that the handle 53 of the on-off valve 9 is located on the opening side of the housing body 35, and its lower end is located on the rear (front) side of the housing body 35. As a result, the cylindrical gas container 3 is tilted at a slight angle relative to the vertical direction (it stands slightly at an angle; see Figure 6).

The gas container 3 is positioned in the space 51 between the two fire extinguishing agent containers 5. When viewed in the front-to-back direction, the gas container 3 is not tilted, and the central axis of the cylinder of the gas container 3 extends vertically (see Figure 5). Furthermore, in the vertical direction, the gas container 3 is positioned below the housing 31. The position of the handle 53 of the on-off valve 9 in the vertical direction is approximately the same as the position of the fingers of an adult standing with their arms and hands lowered, making it easy to turn the handle 53 by hand.

Furthermore, as shown in Figure 12, legs 55 for supporting the housing 31 are provided at the lower end of the housing body 35. The legs 55 are configured to allow for easy adjustment of their mounting orientation (direction) relative to the housing body 35, depending on the configuration of the installation location for the housing 31.

Here, the fire extinguishing system 1 will be described in more detail. The housing body 35 is formed in a rectangular box shape by comprising one rectangular flat bottom plate 57 and four rectangular flat side plates 59 (59A, 59B, 59C, 59D). The first housing lid 39 is supported on the side plate 59A, for example, via a hinge (not shown), and the second housing lid 41 is also supported on the side plate 59B, for example, via a hinge (not shown).

A channel steel section of a predetermined length (equal to or slightly shorter than the front-to-back dimension of the housing body 35) is used as the legs 55. Two legs 55 are used. The legs 55 are designed to be easily attached to and detached from the side plate 59D of the housing body 35 using fastening members such as bolts (not shown). Then, as shown in Figure 12, the orientation of the legs 55 is selected, and the legs 55 are installed on the housing body 35.

As shown in Figure 5, the two fire extinguishing agent containers 5 are placed on the lower side plate portion 59D. The two fire extinguishing agent containers 5 are identical in shape, and a small space is formed between the two containers 5 and the upper side plate portion 59C. One of the two fire extinguishing agent containers 5 is either in contact with or near the side plate portion 59A. The other fire extinguishing agent container 5 is either in contact with or near the side plate portion 59B.

The on/off valve 9 (handle 53) is located at the upper end of the gas container 3. The component indicated by reference numeral 61 in Figure 5 is a regulator that adjusts the pressure of the gas supplied from the gas container 3 to the fire extinguishing agent container 5.

As shown in Figure 5, two first pipes 7 are provided, corresponding to the number of fire extinguishing agent containers 5. One longitudinal end of each of the two first pipes 7 is connected to the on-off valve 9. The other longitudinal end of the first pipe 7 is connected to the first fire extinguishing agent container 5. The other longitudinal end of the second pipe 7 is connected to the second fire extinguishing agent container 5. Note that in Figure 7, the first pipes 7 do not extend at all within the upper gas space 17, but the first pipes 7 may extend slightly within the upper gas space 17.

The second piping system 11, as shown in Figure 5, consists of a connecting pipe 63 that connects the outlets (outlets from the fire extinguishing agent containers 5) of the two siphon pipes 19 provided on each of the two fire extinguishing agent containers 5, and an extension pipe 67. A tee 65 is provided in the middle of the connecting pipe 63. The extension pipe 67 extends from the tee 65. As a result, the fire extinguishing agent 15 discharged from the two fire extinguishing agent containers 5 merge and flow through the extension pipe 67 before being released. The extension pipe (hose) 67 is constructed of a flexible, shape-retaining pipe.

As shown in Figure 5, the tip of the extension pipe 67 is equipped with a nozzle 69, which serves as the discharge port for the fire extinguishing agent 15 that has flowed through the extension pipe 67. The nozzle 69 is also equipped with an operating lever 71. Operating the operating lever 71 opens and closes the flow path for the fire extinguishing agent 15 in the nozzle 69.

When no fire is occurring, the extension pipe 67 and nozzle 69 are housed within the housing 31. In this state, the extension pipe 67 is appropriately wound and housed within the housing 31. When a fire occurs, the extension pipe 67 extends outside the housing 31.

Here, we will explain the discharge operation of the fire extinguishing agent 15 in the fire extinguishing system 1. In the initial state, compressed gas is contained in the gas container 3, the fire extinguishing agent 15 is contained in the fire extinguishing agent container 5, the on-off valve 9 closes the flow path of the first piping 7, and the flow path of the nozzle 69 is also closed. Furthermore, in the initial state, the first housing lid 39 and the second housing lid 41 are closed.

When releasing the fire extinguishing agent 15, in the initial state described above, at least the second housing lid 41 is opened, and the handle 53 of the on-off valve 9 is turned to open the flow path of the first pipe 7. The resulting pressure increase causes the sealing plate 25 to rupture. Next, the extension pipe 67 is pulled out from the housing 31 and extended as appropriate. Then, the operating lever 71 is operated to open the flow path of the nozzle 69, and the fire extinguishing agent 15 is released from the tip of the nozzle 69. The fire extinguishing agent 15 is then released towards the fire to carry out firefighting. At this time, the pressure at which the sealing plate 25 ruptures is 0.3 to 0.4 MPa, and the adjustment pressure of the pressurized gas is set to 0.8 to 0.99 MPa, preferably 0.98 MPa.

In the fire extinguishing system 1, a through-hole 21 is provided so as to penetrate the wall portion of the second pipe 11. Even when the temperature rises due to seasonal or diurnal temperature fluctuations, the pressure in the upper gas space 17 and the pressure in the upper space 23 inside the second pipe remain equal. This allows for a simple configuration without the need for bypass routes, preventing leakage of the fire extinguishing agent 15 due to temperature increases.

Furthermore, in the fire extinguishing system 1, a sealing plate 25 is provided in the middle of the second pipe 11. When the shut-off valve 9 closes the flow path of the first pipe 7, the sealing plate 25 closes the second pipe 11. Conversely, when the shut-off valve 9 opens the flow path of the first pipe 7, the sealing plate 25 is designed to break. This ensures even more reliable prevention of leakage of the fire extinguishing agent 15 due to temperature rise, and also ensures reliable release of the fire extinguishing agent 15 when necessary.

Furthermore, in the fire extinguishing system 1, the sealing plate 25 is configured to include an annular outer periphery 27 and a sealing plate body 29 positioned inside the ring of the outer periphery 27. This simplifies the structure of the sealing plate 25 and allows the outer periphery 27 of the sealing plate 25 to function as a packing.

Furthermore, in the fire extinguishing system 1, the ratio of the dimensions of the first housing lid 39 to the dimensions of the second housing lid 41 is within the range of 2:8 to 4:6. This allows for the installation of specially designed equipment in the space 51 between the two fire extinguishing agent containers 5 within the housing 31, and facilitates its operation. Additionally, by installing the specially designed equipment on the second housing lid 41, an indicator light 47, a transmitter, an indicator light-integrated transmitter, a bell, and a bell hole can be positioned at the front center of the housing 31.

Furthermore, the hose (extension pipe) 67 and gas container 3, which constitute the second piping 11, are installed in the space 51 created between the two fire extinguishing agent containers 5. With this installation, the hose 67 can be removed from the housing 31 simply by opening the second housing lid 41, and the on/off valve 9 can be operated, improving ease of use.

Furthermore, in the fire extinguishing system 1, an indicator light 47, a transmitter, an indicator light integrated transmitter, and a bell hole are provided in the central part of the housing 31, specifically in the area of the second housing lid 41. This improves the visibility of the indicator light 47 and other components, and also enhances the overall design.

Furthermore, in the fire extinguishing system 1, the two fire extinguishing agent containers 5 are spaced apart from each other in the lateral direction of the housing 31. This prevents the outer diameter of the fire extinguishing agent containers 5 from increasing even when the capacity of the fire extinguishing agent 15 is increased, thus reducing the dimensions of the housing 31 in the front-to-back direction. Also, since the handle 53 of the on-off valve 9 is located on the opening 37 side of the housing body 35, it is easier to operate the handle 53 of the on-off valve 9 by opening the second housing lid 41. Moreover, the orientation (direction) of the legs 55 attached to the housing body 35 can be easily changed to suit the configuration of the installation location of the housing 31. This allows the fire extinguishing system 1 to be installed in various locations.

Although this embodiment has been described above, it is not limited to these examples, and various modifications are possible within the scope of the gist of this embodiment.

For example, instead of the sealing plate 25, a pilot check valve 73 may be installed in the middle of the second piping 11, as shown in Figure 13(a), or a check valve 75 may be installed instead of the pilot check valve 73, as shown in Figure 13(b). If a check valve 75 is installed, the flow path of the second piping 11 will be closed by the check valve 75 until the pressure of the fire extinguishing agent 15 in the fire extinguishing agent container 5 reaches the cracking pressure of the check valve 75.

1. Fire extinguishing equipment 3. Gas container 5. Fire extinguishing agent container 7. First piping 9. Shut-off valve 11. Second piping 13. Internal space (internal space of fire extinguishing agent container)
15 Fire extinguishing agent 17 Upper gas space 21 Through hole 25 Sealing plate 27 Outer periphery 29 Sealing plate body 31 Housing 35 Housing body 37 Opening of housing body 39 First housing lid (first door)
41. Second enclosure cover (second door)
43. Engaged portion (first engaging edge)
45. Engaged portion (second engagement edge)
47 Indicator light 53 Handle for on/off valve L1 Dimensions of the first housing cover L2 Dimensions of the second housing cover

Claims (7)

A gas container into which pressurized gas enters the internal space,
A fire extinguishing agent container in which a fire extinguishing agent is placed in the internal space such that an upper gas space is formed at the top of the internal space, which is a space in which gas is present.
A first pipe connects the internal space of the gas container and the internal space of the fire extinguishing agent container in order to supply pressurized gas from the gas container to the internal space of the fire extinguishing agent container,
A shut-off valve for opening and closing the flow path of the first piping,
In order to release the fire extinguishing agent from the internal space of the fire extinguishing agent container, a second pipe connects the internal space of the fire extinguishing agent container to the outside of the fire extinguishing agent container,
A through-hole provided in the second pipe is provided so as to penetrate the flesh portion located in the upper gas space of the second pipe,
A fire extinguishing system comprising the following: when the on/off valve opens the flow path of the first piping, the pressurized gas is supplied from the gas container to the internal space of the fire extinguishing agent container, and the fire extinguishing agent is discharged to the outside of the fire extinguishing agent container through the second piping. A sealing plate is provided in the middle of the second pipe.
When the on/off valve is closing the flow path of the first pipe, the sealing plate is closing the flow path of the second pipe.
The fire extinguishing system according to claim 1, configured such that when the on/off valve is in a state where the flow path of the first piping is open, the pressure of the gas supplied from the gas container increases the pressure of the fire extinguishing agent in the fire extinguishing agent container, the seal plate is broken by the increase in the pressure of the fire extinguishing agent, the flow path of the second piping opens, and the fire extinguishing agent is released to the outside of the fire extinguishing agent container. The sealing plate comprises an annular outer periphery and a sealing plate body that is formed in a film-like manner and is positioned inside the ring of the outer periphery such that its thickness direction coincides with the direction of extension of the central axis of the annular ring of the outer periphery.
The fire extinguishing system according to claim 2, wherein the sealing plate body is destroyed when the on/off valve is in a state where the flow path of the first piping is open. The housing has an internal structure that houses the gas container, the fire extinguishing agent container, the first piping, the on/off valve, and the second piping.
The housing is configured to include a rectangular, box-shaped housing body, a rectangular, flat first housing lid that opens and closes the opening of the housing body, and a rectangular, flat second housing lid that opens and closes the opening of the housing body.
The first housing lid has one predetermined rectangular side that engages with the housing body at one predetermined side of the rectangular opening in the housing body, and is configured to rotate relative to the housing body at the engaged portion.
The second housing lid also has one predetermined rectangular side that engages with the housing body at the other predetermined side of the rectangular opening of the housing body, which is the side opposite to the side with which the first housing lid engages, and the second housing lid rotates relative to the housing body at the engaged portion.
The fire extinguishing equipment according to any one of claims 1 to 3, wherein the ratio of the dimensions of the first housing lid to the dimensions of the second housing lid in the direction connecting a predetermined side of the rectangular opening of the housing body and a predetermined other side of the rectangular opening of the housing body is within the range of 2:8 to 4:6. The fire extinguishing system according to claim 4, wherein, with the opening of the housing body closed by the first housing lid and the second housing lid, when the opening of the housing body, the first housing lid, and the second housing lid are viewed together, at least one of an indicator light, a transmitter, an indicator light integrated transmitter, or a bell hole is provided in the central part of the second housing lid, in the direction connecting a predetermined side of the rectangular opening of the housing body and a predetermined other side of the rectangular opening of the housing body. The fire extinguishing system according to claim 4, wherein the fire extinguishing agent container is formed in a cylindrical shape, is installed within the housing such that the height direction of the cylinder of the fire extinguishing agent container is vertical, two fire extinguishing agent containers are provided, the two fire extinguishing agent containers are spaced apart from each other in the lateral direction of the housing, and their positions are approximately the same in the front-to-back direction of the housing. The fire extinguishing system according to claim 4, wherein the gas container is formed in a cylindrical shape, an on-off valve is provided at the upper end of the gas container, the on-off valve is opened and closed by rotating the handle of the on-off valve, and the gas container is installed inside the housing such that the handle of the on-off valve is located on the opening side of the housing body and the lower end is located on the rear side of the housing body.