Foam fire extinguishing equipment

Abstract

To prevent damage and malfunction resulting from contact with a vehicle or the like when a manual starter is installed in a parking lot.SOLUTION: A foam fire-extinguishing system decompresses a heat-sensitive pipe by the opening of a fire sensing head due to a fire or an opening operation of a manual starter 10, opens a deluge valve of a main pipe, and discharges a foam fire-extinguishing agent from a foam head on a tip side of the main pipe. The manual starter 10 is fixed to an installation surface 25 of a wall surface or the like of a parking lot with an attaching pedestal 46 formed integrated with a start valve 12 so that its protrusion from the installation surface 25 is reduced. An operation handle 48 for executing an opening / closing operation is provided on the side of the start valve 12. The operation handle 48 is provided with a flat operation knob 50 at its operation end to increase operability though the start valve 12 is close to the installation surface 25. Pipe connection members 54 and 56 are pivotally supported in a rotatable manner at an inflow port of the start valve 12, and by turning the pipe connection members 54 and 56 in a state that the start valve 12 and the pipe side are fixed, a screw part of the pipe tip is screwed into a screw hole of the start valve 12, and fixed.SELECTED DRAWING: Figure 2

Description

[Technical field]

[0001] The present invention relates to a foam fire extinguishing system that extinguishes a fire by releasing a foam fire extinguishing agent from a foam head when a fire occurs. [Background technology]

[0002] Conventionally, buildings and facilities such as parking lots, factories, and buildings have been equipped with foam extinguishing equipment that, in the event of an oil fire, chemical fire, or other fire, releases foam extinguishing agent produced by mixing water and foam extinguishing concentrate (foam extinguishing agent) in a certain ratio from a foam head (Patent Documents 1 and 2).

[0003] In addition, foam fire extinguishing equipment has a mixer installed in the main pipe from a water pump (pressurized water supply device) that pressurizes water from a water source such as a water tank, and the mixer mixes the foam fire extinguishing agent concentrate supplied from the source liquid tank with water from the water source in a certain ratio to produce foam fire extinguishing agent, and releases the foam fire extinguishing agent from a foam head installed at the tip of the main pipe via a simultaneous release valve.

[0004] In addition, a detection pipe is branched off and connected to the simultaneous release valve, and the detection pipe is equipped with a fire detection head (closed sprinkler head) that opens and releases water when a fire is detected. When the fire detection head opens in response to the hot air current caused by a fire, the detection pipe is depressurized and the simultaneous release valve is automatically opened. The foam extinguishing agent, which is supplied by starting the water pump in response to the depressurization of the main pipe, is released from the foam head.

[0005] In addition, a manual start-up device is provided at the tip of the detection pipe, so that in the event of a fire, a person who discovers the fire can open the manual start-up device to reduce pressure inside the detection pipe, and the simultaneous release valve is automatically opened to release foam extinguishing agent from the foam head.

[0006] Fig. 8 is an explanatory diagram showing an example of a conventional manual activation device installed in a parking lot, with Fig. 8(A) showing a front view and Fig. 8(B) showing a side view. Fig. 9 shows a plan view of the conventional manual activation device.

[0007] In the following description of the drawings, the XYZ directions shown in Fig. 8 and Fig. 9 are mutually orthogonal directions, specifically, the Z direction is the up-down direction, the X direction is the left-right direction, and the Y direction is the front-rear direction (depth direction). In the Z direction, +Z is up, and -Z is down. In addition, in the X direction, +X is right, and -X is left. Furthermore, in the Y direction, +Y is rear, and -Y is front. This also applies to Figs. 2 to 7 which show embodiments of the present invention.

[0008] As shown in Fig. 8, a conventional manual start device 100 is composed of a start valve 102 equipped with an operating handle 104 and a detachable cover 105, and is installed on the wall of a building facing a parking lot as an installation surface 101. One end of the start valve 102 of the manual start device 100 is connected to a sensing pipe 106 from a simultaneous opening valve, and the other end is connected to a drain pipe 108. The start valve 102 is, for example, a ball valve that is opened and closed by an operating lever 104, and the valve shaft of the start valve 102 is taken out to the right side (+X side), to which the operating lever 104 is connected. In addition, the cover 105 is attached detachably, covering the start valve 102 and the operating handle 104 while floating above the installation surface 101.

[0009] The distance L from the installation surface 101 to the cover 105 of the manual start device 100 shown in FIG. 9 is determined by the saddle 110 that fixes and supports the sensing pipe 106 along the installation surface 101, and is set at a distance sufficient to allow a finger to be inserted under the operating lever 104 of the start valve 102 to operate it.

[0010] The connection of the actuation valve 102 to the sensing piping 106 is made by a saddle 110. and Anchor 112 The start-up valve 102 is rotated and screwed into the inlet side screw hole onto the threaded portion at the end of the sensing pipe 106 which is fixedly supported on the installation surface 101 by a screw, and therefore the start-up valve 102 is spaced apart from the installation surface 101 to ensure a sufficient gap to rotate the start-up valve 102. For this reason, the distance L from the installation surface 101 to the cover 105 needs to be at least several centimeters, for example about 7 centimeters. [Prior art documents] [Patent documents]

[0011] [Patent Document 2] JP 2012-095897 A [Patent Document 1] JP 2017-086175 A Summary of the Invention [Problem to be solved by the invention]

[0012] However, with such conventional foam fire extinguishing equipment, when it is installed in a parking lot, the manual starting device protrudes into the space within the parking lot where vehicles pass through or enter and exit, and accidents have occurred when a vehicle comes into contact with the manual starting device and damages it, resulting in the erroneous release of foam fire extinguishing agent.

[0013] The present invention aims to provide a foam fire extinguishing system that can reliably prevent damage or malfunction caused by contact with a vehicle when a manual activation device is installed in a parking lot. [Means for solving the problem]

[0014] (foam fire extinguishing equipment) The present invention is a foam extinguishing system in which a manual start device is provided on a sensing pipe that is connected to a simultaneous release valve that opens and closes a main pipe having a foam head at its tip, and the manual start device is operated to reduce pressure in the sensing pipe, thereby opening the simultaneous release valve and discharging a foam extinguishing agent from the foam head, The manual starter is An actuation valve that is disposed on a predetermined installation surface of the protection area and opens and closes the sensing pipe; an operating handle for opening and closing the start valve; Equipped with The start valve is A mounting base for mounting and fixing to an installation surface; inlet or at least one of the outlets a rotary connection structure for rotatably supporting a pipe connection member having a threaded hole for threading and fixing a threaded portion of a pipe; Equipped with A foam fire extinguishing system characterized in that the operating handle has an operating portion that is farther away from the installation surface than the valve stem of the start valve.

[0015] (Operation handle) The operating handle has one end of a handle member fixed to a valve shaft extending to the side of the starter valve, and a flat operating knob formed on the other end of the handle member.

[0016] (Rotary connection structure) The rotating connection structure is A shaft hole formed in each of the inlet and the outlet; a shaft portion of a pipe connection member rotatably inserted into the shaft hole; A retaining structure that prevents the shaft portion rotatably inserted into the shaft hole from falling out; a sealing structure that seals a gap between the shaft hole and the shaft portion; Equipped with.

[0017] (Details of rotating connection structure) the shaft hole is a stepped shaft hole having a first shaft hole with a first inner diameter and a second shaft hole with a second inner diameter smaller than the first inner diameter, and an annular groove is formed at a predetermined position of the first shaft hole; the shaft portion is a stepped shaft portion having a first shaft portion with a first outer diameter corresponding to the first inner diameter and a second shaft portion with a second outer diameter corresponding to the second inner diameter, and an annular protrusion is formed at a predetermined position of the second shaft portion in correspondence with the annular groove of the shaft hole; The retaining structure includes a retaining ring disposed between the annular groove and the annular projection.

[0018] (Sealed structure) The sealing structure is An annular sealing groove formed on an inner periphery of the shaft hole or an outer periphery of the shaft portion; a sealing ring made of a soft material fitted in the annular sealing groove; Equipped with.

[0019] (cover) The manual start device further includes a removable cover for covering the start valve and the operating handle. The cover has an open end surface on the installation surface side, a U-shaped notched fitting portion is formed on the surface on the piping side, and the open end surface is attached in close contact with the installation surface.

[0020] (Flexible piping) At least a portion of the sensing piping is flexible piping.

[0021] (The inlet of the pipe can be rotated freely) The portion of the sensing pipe connected to the inlet of the start-up valve is rotatable about an axis extending in the longitudinal direction of the pipe. Effect of the Invention

[0022] (Effects of foam fire extinguishing equipment) According to the foam fire extinguishing equipment of the present invention, a mounting base is integrally formed with the start valve of the manual start device, and the mounting base is fixed in close contact with the installation surface, such as the wall of the parking lot, thereby reducing the protrusion of the manual start device into the space within the parking lot and reducing the risk of damage or malfunction due to contact with vehicles using the parking lot.

[0023] In addition, since the start valve of the manual start device is fixed in close contact with the wall surface, the start valve is fixed securely without wobbling, compared to conventional cases where the piping side is supported and fixed to the wall surface, making it easier to pull the operating handle toward you to open it.

[0024] Furthermore, because the start valve of the manual start device is fixed in close contact with the wall surface, the gap between the operating handle and the wall surface becomes narrow; however, because an operating part, such as a flat operating knob, is provided that is farther away from the installation surface than the valve stem of the start valve, the operator can easily insert his or her finger under the operating knob and pull out and turn the operating handle towards himself or herself to perform the opening operation, and operability is not impaired even though the start valve of the manual start device is in close contact with the wall surface.

[0025] In addition, the start valve of the manual start device is fixed to a wall surface by a mounting base, and the threaded portion of the end of the piping is screwed and fixed into the inlet of the start valve. However, a piping connection member with a threaded hole for connection is rotatably supported at the inlet of the start valve. Therefore, by rotating the piping connection member of the start valve while it is fixed to the wall surface, the threaded portion of the piping can be easily and reliably screwed and fixed into the threaded hole. Compared to conventional cases where the start valve is rotated to connect to the threaded portion of the piping, no space is required to rotate the start valve and the connection work can be done simply and easily.

[0026] Furthermore, by fixing the start valve of the manual start device in a tight contact state to the wall surface, the amount of protrusion of the piping connected to the manual start device from the wall surface can be reduced, making it possible to reduce the installation space and improve the appearance.

[0027] (Effect of rotating connection structure) The rotary connection structure includes an axial hole formed in the inlet of the start-up valve, a shaft portion of the pipe connection member rotatably inserted into the axial hole, a retaining structure that prevents the shaft portion rotatably inserted into the axial hole from coming off, and a sealing structure that seals the gap between the axial hole and the shaft portion, so that the connection work by screwing the pipe and the start-up valve can be performed simply and easily. Also, the retaining of the rotating pipe connection member is performed reliably with a simple structure, and water leakage can be reliably prevented by the sealing structure.

[0028] (Cover effect) In addition, the cover that is removably attached to cover the start valve and its operating handle that are tightly fixed to the wall surface has the open end face of the cover bottom tightly contacting the wall surface, thereby providing a more stable attachment state and a better appearance than conventional covers that were attached in a floating state from the wall surface.

[0029] (Effect of flexible piping) Furthermore, by making at least a portion of the sensing pipe flexible, it is possible to facilitate the installation of the sensing pipe.

[0030] (The inlet of the pipe can be rotated freely) The sensing pipe is rotatable around the longitudinal axis of the pipe at the part connected to the inlet of the start valve. [Brief description of the drawings]

[0031] [Figure 1] FIG. 1 is an explanatory diagram showing an outline of a foam fire extinguishing system of the present invention. [Diagram 2] 1A and 1B are front and side views of an embodiment of a manual activation device. [Diagram 3] FIG. 2 is a plan view illustrating an embodiment of a manual start device. [Figure 4] FIG. 2 is an explanatory diagram showing a start-up valve. [Diagram 5] 1 is an explanatory diagram showing a rotary connection structure of a start-up valve in a cross-sectional view and an exploded assembly view. FIG. [Figure 6] FIG. [Figure 7] FIG. 11 is an explanatory diagram showing an opening operation of the manual start device. [Figure 8] 1A and 1B are explanatory diagrams showing the installation state of a conventional manual start device from the front and side. [Figure 9] FIG. 1 is an explanatory plan view showing an installation state of a conventional manual start device. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0032] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an embodiment of a foam fire extinguishing system according to the present invention will be described in detail with reference to the drawings. Note that the present invention is not limited to the following embodiment.

[0033] [Basic Concept of the Embodiment] First, a basic concept of the embodiment will be described. The embodiment generally relates to a foam fire extinguishing system that releases a foam extinguishing agent from a foam head when a fire occurs.

[0034] The foam fire extinguishing equipment has a manual starting device attached to a sensing pipe that branches off and is connected to a simultaneous release valve that opens and closes a main pipe with a foam head at its end, and by opening the manual starting device, the pressure inside the sensing pipe is reduced, thereby opening the simultaneous release valve and releasing the foam fire extinguishing agent from the foam head.This embodiment is configured to reliably prevent damage or malfunction due to contact with a vehicle when the manual starting device is installed in a parking lot.

[0035] A "manual start-up device" is a device that is placed on an installation surface such as the wall of a protected area such as a parking lot, and is composed of a start-up valve that opens and closes the sensing piping, an operating handle that opens and closes the start-up valve, and a removable cover that covers the start-up valve and the operating handle.

[0036] The "starting valve" opens and closes the sensing pipe and is equipped with a mounting base and a rotating connection structure. Here, the "mounting base" refers to a base for mounting and fixing the starting valve to an installation surface, and by providing the mounting base to the starting valve, it is fixed in close contact with the installation surface, such as the wall of a parking lot, reducing the protrusion of the manual starting device from the installation surface.

[0037] In addition, the "rotary connection structure" is a structure that rotatably supports a piping connection member, which has a threaded hole formed at at least the inlet of the start-up valve into which a threaded portion on the piping side is screwed and fixed, and the function and structure of the rotary connection structure are arbitrary, but it is composed, for example, of an axial hole formed at each of the inlet and outlet, a axial portion of the piping connection member, a structure to prevent the axial portion from coming out of the axial hole, and a sealing structure that seals the gap between the axial hole and the axial portion.

[0038] In the rotary connection structure, the "shaft hole" is a hole formed at each of the inlet and outlet of the start-up valve, into which the shaft of the pipe connection member is rotatably inserted. The "shaft" is a shaft formed in the pipe connection member and rotatably inserted into the shaft hole. The "anti-slip structure" is a structure that prevents the shaft rotatably inserted into the shaft hole from slipping out, for example, a structure in which a locking ring is disposed between an annular groove formed on the inner circumference of the shaft hole and an annular protrusion formed on the outer circumference of the shaft. The "sealing structure" is a structure that seals the gap between the shaft hole and the shaft, for example, a soft sealing ring such as an O-ring is incorporated in the annular groove on the outer circumference of the shaft to prevent water leakage.

[0039] The "operating handle" is a device for opening and closing the start-up valve, and may have any structure or type, but may, for example, have an operating part formed at a greater distance from the installation surface than the valve stem of the start-up valve, and more specifically, has one end of a handle member fixed to the valve stem extending to the side of the start-up valve, and has a flat operating knob formed at a position away from the installation surface on the other end side extending along the side of the start-up valve. The start-up valve of this embodiment is fixed in close contact with the installation surface by the mounting base, narrowing the gap between the installation surface and the operating handle, but since the operating part, for example a flat operating knob, is formed at a position away from the installation surface on the other end side of the operating handle, it is possible to easily perform the opening operation by inserting a finger under the operating knob and pulling the operating handle towards oneself.

[0040] A specific embodiment will be described below. In the specific embodiment shown below, a case will be described in which the protected area of ​​the foam fire extinguishing system is a parking lot, and the manual activation device is installed on the wall surface of the parking lot as an installation surface.

[0041] [Configuration of foam fire extinguishing equipment] The configuration of the foam fire extinguishing system according to this embodiment will be described in more detail. As shown in Fig. 1, the foam fire extinguishing system of this embodiment has a water pump 17 driven by a motor 16 installed in a pump room in the basement or the like of a building, and pumps water from a water tank 15, which serves as a water source, to a main pipe 18 arranged in the height direction of the building. The motor 16 is controlled by a pump control panel 34 to start and stop the operation.

[0042] A pressure tank 36 is provided to start the water pump 17. The pressure tank 36 is connected to the main pipe 18, and introduces pressurized fire extinguishing water from the pipe to compress the air inside. The pressure tank 36 is provided with a pressure switch 38, which detects a reduction in pressure in the main pipe 18 below a specified pressure and outputs a pressure drop detection signal to the pump control panel 34, which drives the motor 16 and starts the water pump 17.

[0043] A mixer 22 is provided in the main pipe 18. Foam extinguishing agent concentrate is supplied to the mixer 22 from the concentrate tank 20 and mixed at a fixed ratio with water pumped by the water pump 17 to produce a foam extinguishing agent. The concentrate tank 20 holds the foam extinguishing agent concentrate on one side of a partition disposed in the tank, and pressurized fire-extinguishing water is introduced from the main pipe 18 to the other side of the partition, whereby the foam extinguishing agent concentrate is pressurized and sent to the mixer 22.

[0044] A branch pipe 18a is drawn from the main pipe 18 on the secondary side of the mixer 22 to a protected area to be extinguished, such as a parking lot of a building. A water flow detection device 24 is provided at the branching portion of the branch pipe 18a. When a flow occurs in the branch pipe 18a due to the release of foam extinguishing agent from the foam head 28, the water flow detection device 24 opens the valve body due to this flow, and the water flow detection switch 24a is turned on to output a discharge alarm signal to the monitoring panel 35, which then displays a fire alarm, etc.

[0045] A simultaneous release valve 26 is provided on the pipe 18b on the secondary side of the water flow detection device 24. A pipe 18c is connected to the secondary side of the simultaneous release valve 26, and an open type foam head 28 is connected to the pipe 18c. A detection pipe 30 is branched and connected to the simultaneous release valve 26, and a fire detection head (closed type sprinkler head) 32 is connected to the detection pipe 30, and the manual start device 10 is connected to the end of the detection pipe 30.

[0046] In the normal monitoring state, the simultaneous release valve 26 closes the flow path to the secondary side, and pressurized water is filled in the detection pipe 30. When a fire occurs and the fire detection head 32 installed in the detection pipe 30 is activated and water is discharged, the simultaneous release valve 26 is opened due to the reduced pressure inside the detection pipe 30, and foam extinguishing agent is discharged from the foam head 28.

[0047] In addition, if a parking lot user or other person discovers a fire, by manually opening the manual activation device 10 installed on the wall of the parking lot or the like, the pressure inside the sensing piping 30 is reduced, which opens the simultaneous release valve 26 and releases foam extinguishing agent from the foam head 28.

[0048] In addition, from the standpoint of ease of construction, it is desirable to use flexible piping 33 in the portion of the detection piping 30 where the piping bends from the surface on which the fire detection head 32 is placed to the installation surface of the manual starting device 10, in other words, on the side of the manual starting device 10 closer to the fire detection head 32.

[0049] [Manual activation device 10] The manual start device 10 provided in the foam fire extinguishing system will be described in more detail. Figures 2 and 3 are explanatory diagrams showing an embodiment of the manual start device in an installed state, with Figure 2(A) showing a front view, Figure 2(B) showing a side view, and Figure 3 showing a plan view. The manual start device 10 of this embodiment is composed of a start valve 12, an operating handle 48, and a cover 14.

[0050] As shown in Figure 1, the start valve 12 is connected to the tip side of the fire detection head 32 of the sensing piping 30 which is branched off and connected to the simultaneous release valve 26, and is a valve for opening the simultaneous release valve 26 by reducing the pressure in the sensing piping 30 through the opening operation, thereby releasing the foam extinguishing agent from the foam head 28.The function, structure and type of the start valve 12 are arbitrary, but for example, as shown in Figures 2 and 3, it is composed of a valve body 44, an inlet side piping connection member 54 and an outlet side piping connection member 56.

[0051] The valve body 44 is integrally formed with a mounting base 46 on the installation surface 25 side. 46bWith the cover 14 in close contact with the installation surface 25, it is fixed to anchors 43 driven into the installation surface 25 by anchor bolts 42. As a result, as shown in Fig. 3, the distance L from the installation surface 25 to the front surface (-Y side surface) of the cover 14 is reduced to a few centimeters or less, for example to about 4 centimeters, which is roughly half of the conventional distance.

[0052] A valve element, such as a ball valve, is incorporated inside the valve body 44 to open and close an internal flow passage that connects the inlet and the outlet, and a valve shaft that opens and closes the valve element is extended to the side of the valve body 44, for example, to the right side (+X side), and one end of an operating handle 48 is fixed thereto.

[0053] The operating handle 48 extends away from the side surface of the valve body 44 toward the other end (operating end), and a horizontally flat operating knob 50 is formed at the other end (operating end). The start-up valve 12 is closed when the operating handle 48 is pushed in parallel to the illustrated installation surface 25, and is opened when a finger is inserted under the operating knob 50 of the operating handle 48, pulled toward the user, and rotated upward until it is operated to a horizontal position.

[0054] Pipe connection members 54, 56 are rotatably supported on the inflow and outflow sides of the valve body 44. The sensing pipe 30, drawn in from above, is connected to the pipe connection member 54, and the drain pipe 31 is connected from below to the pipe connection member 56. The sensing pipe 30 is a metal pipe because it is subjected to water pressure, and is connected and fixed by rotating the pipe connection member 54 and screwing a screw hole provided at the inflow port of the pipe connection member 54 into a threaded portion formed at the tip (lower end).

[0055] Here, the sensing pipe 30 is fixed to the installation surface 25 by a saddle 40. As is well known, the saddle 40 is composed of a base 40a and a curved blade piece 40b, and both ends of the blade piece 40b are engaged with the base 40a, and the base 40a is fixed by screwing an anchor bolt 42 into an anchor 43 driven into the installation surface 25. The height of the base 40a of the saddle 40 that fixes the sensing pipe 30 to the installation surface 25 is determined so that the central axis of the sensing pipe 30 coincides with the central axis of the start-up valve 12 fixed to the installation surface 25 by a mounting base 46. Therefore, by lowering the installation height of the start-up valve 12, the installation height of the sensing pipe 30 can also be lowered.

[0056] A drain pipe 31 is connected to the outflow side of the start-up valve 12. Because no water pressure is applied to the drain pipe 31, a synthetic resin piping such as polyvinyl chloride is used. A joint 57 with a threaded portion is adhesively fixed to the tip (upper end) of the drain pipe 31, and the connection is fixed by rotating the pipe connection member 56 and screwing the threaded portion of the joint 57 into a threaded hole provided at the outflow port of the pipe connection member 56.

[0057] [Structure of start-up valve 12] A more detailed explanation will be given of the structure of the start-up valve 12. Figure 4 is an explanatory diagram showing an example of the structure of the start-up valve 12, where Figure 4(A) shows a cross-sectional view passing through the axial center, Figure 4(B) shows a side view, and Figure 4(C) shows a plan view.

[0058] The start-up valve 12 is composed of a valve body 44 and upper and lower piping connection members 54, 56. The valve body 44 is divided into body members 44a, 44b, and a mounting base 46 that extends in the left-right direction is formed integrally with the mounting surface side of the body member 44a, and mounting holes 46a are formed in two places on the left and right of the mounting base 46. The body members 44a, 44b form an internal flow path 70 coaxially, and are connected and fixed by screwing the threaded shaft portion of the body member 44b into the threaded hole of the body member 44a.

[0059] A ball valve element 60 is rotatably assembled inside the valve body 44, i.e., at the mating portion of the body members 44a, 44b, with a seal. A valve hole 60a is formed through the ball valve element 60, which communicates with the internal flow path 70 in the open position, and the valve hole 60a is rotated to a position that closes the internal flow path 70 in the closed position shown in the figure. A valve shaft 62 projects from the ball valve element 60 to the right side (+X side), and one end of the operating handle 48 is fixed to the tip of the valve shaft 62.

[0060] The operating handle 48 of this embodiment is, for example, a processed metal plate member as a handle member, and in the closed position of the illustrated operating handle 48, the plate surface of the handle member is located parallel to the side of the valve body 44, and the handle member is bent to the side (+X direction) so as to move away from the valve body 44 as it approaches the other end (operating end), and the upper end of the plate surface of the other end (operating end) of the handle member is bent in the lateral direction (+X direction) parallel to the installation surface to form a flat operating knob 50. In addition, a stopper piece 64 is bent toward the body 44 at the upper end of the plate surface on one end side of the operating handle 48, and when the operating handle 48 is operated to the open position (horizontal position), the stopper piece 64 abuts against the valve body 44, making it possible to position the open position.

[0061] An internal flow passage 70 is formed in the pipe connection member 54, continuing from the inflow side to the threaded hole 66, and is rotatably supported by the valve body 44. In addition, an internal flow passage 70 is formed in the pipe connection member 56, continuing from the outflow side to the threaded hole 68, and is rotatably supported by the valve body 44.

[0062] The rotating connection structure of the pipe connection members 54, 56 is arbitrary. For example, FIG. 5 shows the rotating connection structure of the inlet side pipe connection member 54, where FIG. 5(A) shows a cross-sectional view and FIG. 5(B) shows an exploded view.

[0063] A first shaft hole 72 having a first hole diameter D1 is formed on the inflow side of the body member 44a, followed by a second shaft hole 74 having a second hole diameter D2 smaller than the first hole diameter D1, thereby forming a stepped shaft hole. An annular groove 80 is formed at a predetermined position of the first shaft hole 72.

[0064] The piping connection member 54 is formed such that, following the nut portion 55 with the threaded hole 66, a first shaft portion 76 is formed with a first outer diameter D11 corresponding to the hole diameter D1 of the first shaft hole 72 of the body member 44a, and then a second shaft portion 78 is formed with a second outer diameter D21 corresponding to the hole diameter D2 of the second shaft hole 74 of the body member 44a, thereby forming a stepped shaft portion.

[0065] An annular protrusion 82 is formed at a predetermined position on the first shaft portion 76 corresponding to the annular groove 80 in the first shaft hole 72, and an annular sealing groove 84 is formed in the second shaft portion 78, into which a soft sealing ring, such as an O-ring 86, is fitted.

[0066] When the stepped shaft portion of the piping connection member 54 is fitted into the stepped shaft hole of the body member 44a, a notched anti-slip ring 88 is fitted between them, and the anti-slip ring 88 is positioned between the annular groove 80 and the annular protrusion 82, thereby realizing a non-slip structure that rotatably supports the piping connection member 54 relative to the valve body 44 so as to prevent it from slipping out.

[0067] A sealing structure is realized by positioning an O-ring 86 between the stepped shaft hole of the body member 44a and the stepped shaft portion of the pipe connection member 54. Note that instead of the annular sealing groove 84 in the second shaft portion 78, a sealing structure in which an O-ring is fitted into an annular sealing groove formed in the second shaft hole 74 may be used. The pipe connection member 56 rotatably provided on the outflow side also has a rotational connection structure similar to that of the inflow side pipe connection member 54 described above.

[0068] [Cover 14] The cover 14 of the manual start device 10 will be described in more detail. The cover 14 is a member that covers and protects the start valve 12 and the operating handle 48 mounted on the mounting surface 25, and may have any structure or shape, for example, the structure and shape shown in Fig. 6. Here, in Fig. 6 showing the cover 14, Fig. 6(A) is a plan view, Fig. 6(B) is a front view, Fig. 6(C) is a side view, Fig. 6(D) is a vertical cross-sectional view, and Fig. 6(E) is a horizontal cross-sectional view.

[0069] The cover 14 is a synthetic resin box with an open end surface 90 that opens on the placement surface 25 side, and U-shaped notched fitting portions 92 that engage with the pipes are formed on the upper and lower end surfaces, and the cover 14 is detachably fitted into the sensing pipe 30 and the drain pipe 31. In addition, recesses 94 are formed on the left and right side surfaces of the cover 14, making it easy to remove the cover 14 with fingers. Furthermore, the front of the cover 14 is displayed with letters, figures, etc. showing how to operate in the event of a fire.

[0070] 2(B), the cover 14 covers the start valve 12 and the operating handle 48 of the manual start device 10, and is detachably attached by fitting the fitting parts 92 at the upper and lower end faces into the sensing pipe 30 and the drain pipe 31 located above and below. The open end face 90 on the bottom side of the cover 14 is attached in a state of close contact with the installation surface 25, and the close contact with the installation surface 25 stabilizes the installation state of the cover 14, and there is no gap between the cover 14 and the installation surface 25, improving the appearance. The cover 14 may be tied to the start valve 12 side with a string having slack in a loop so that it does not fall onto the floor when it is removed.

[0071] [Manual starter operation] The operation of the manual start device 10 in the event of a fire will now be described in more detail. Figure 7 shows how the manual start device 10 is operated in the event of a fire. When operating the manual start device 10, first remove the cover 14 as indicated by arrow A to expose the start valve 12. Next, insert your finger from below into the back side of the operation knob 50 at the bottom end of the operation handle 48, which is located on the side of the start valve 12 facing downward, and pull it towards you as indicated by arrow B, turning it upward until the stopper 64 comes into contact with the valve body and stops the operation handle 48a. and operation knob 50a This opens the start valve 12, and the pressure inside the sensing pipe 30 is reduced, opening the simultaneous release valve, allowing the foam extinguishing agent to be released from the foam head.

[0072] [Modifications of the present invention] Modifications of the in-vehicle information display device according to the present invention will be described in more detail below. In addition to the above-described embodiment, the foam fire extinguishing system of the present invention includes the following modifications.

[0073] (Start valve operating handle) In the above embodiment, the operating handle is positioned facing downward when the start-up valve is in the closed position, but this is not limited to this. The operating handle may be positioned facing upward when the start-up valve is in the closed position, and the start-up valve may be opened by pulling the operating handle toward yourself and rotating it downward.

[0074] In addition, the operating handle is configured such that one end of the handle member is fixed to the valve shaft that is taken out to the side of the start-up valve, and a flat operating knob is formed at the other end of the handle member, but is not limited thereto. For example, the operating handle may have any structure having an operating part that is farther away from the installation surface than the valve shaft of the start-up valve, such as one end of the handle member being fixed to the valve shaft that is taken out to the side of the start-up valve, the handle member extending in a direction away from the installation surface, and having a rod-like shape that extends in the height direction, in other words, in the longitudinal direction of the sensing pipe.

[0075] In addition, in the above embodiment, a rotatable pipe connection member 56 is provided on the inflow side of the start valve, but this is not limiting. For example, instead of making the pipe connection member 56 on the inflow side of the start valve rotatable, the portion on the sensing pipe 30 side connected to the inflow port of the start valve, for example, the portion of the flexible pipe 33, may be a connection member that is rotatable around the axis of the longitudinal direction of the pipe.

[0076] In addition, in the above embodiment, a rotatable pipe connection member 56 is provided on the outflow side of the start-up valve, but this is not limited to this. It is also possible to connect the start-up valve to the sensing pipe 30 after the drain pipe 31 is engaged with the start-up valve, in which case the pipe connection part 56 does not have to be rotatable. Also, it is not necessary to provide the drain pipe 31.

[0077] (others) Furthermore, the present invention is not limited to the above-described embodiment, but includes appropriate modifications that do not impair the objects and advantages of the present invention, and is not limited to the numerical values ​​shown in the above-described embodiment. [Explanation of symbols]

[0078] 10:Manual activation device 12: Start valve 14: Cover 15: Water tank 16:Motor 17: Water pump 18: Main piping 18a: Branch piping 18b, 18c: Piping 20: Concentrate tank 22: Mixer 24: Flowing water detector 24a: Flow detection switch 25: Installation surface 26: Simultaneous release valve 28: Foam head 30: Sensing piping 31: Drain pipe 32: Fire detection head 33: Flexible piping 34: Pump control panel 35: Monitoring board 36: Pressure tank 38: Pressure switch 40: Saddle 42: Anchor bolt 44: Valve body 44a, 44b: Body member 46: Mounting base 46a: Mounting hole 48: Operating handle 50: Operation knob 54, 56: Pipe connection parts 60: Ball valve body 62: Valve stem 64: Stopper piece 66,68: Screw holes 70: Internal flow path 72: First shaft hole 74: Second shaft hole 76: First shaft 78: Second shaft 80: Annular groove 82: Ring-shaped protrusion 84: Annular sealing groove 86: O-ring 88: Anti-slip ring 90: Open end surface 92: Fitting part 94: Hollow

Claims

1. A manual start device is provided on a sensing pipe that is connected to a simultaneous release valve that opens and closes a main pipe having a foam head at its tip end, and the manual start device is operated to open the simultaneous release valve by reducing the pressure inside the sensing pipe, thereby releasing a foam extinguishing agent from the foam head. The manual activation device is An actuation valve that is disposed on a predetermined installation surface of the protection section and opens and closes the sensing pipe; An operating handle for opening and closing the start valve; Equipped with The start valve is A mounting base for mounting and fixing to the installation surface; A rotary connection structure that rotatably supports a pipe connection member having a threaded hole formed in at least one of an inlet or an outlet for threading and fixing a threaded portion of a pipe; Equipped with A foam fire extinguishing system characterized in that the operating handle has an operating portion that is farther away from the installation surface than the valve shaft of the start valve.

2. The foam fire extinguishing system according to claim 1, The foam fire extinguishing equipment is characterized in that the operating handle has one end of a handle member fixed to a valve shaft extending to the side of the start valve, and a flat operating knob formed on the other end of the handle member.

3. The foam fire extinguishing system according to claim 1, The rotary connection structure includes: A shaft hole formed in each of the inlet and the outlet; a shaft portion of the pipe connection member rotatably inserted into the shaft hole; a retaining structure that retains the shaft portion rotatably inserted into the shaft hole; a sealing structure that seals a gap between the shaft hole and the shaft portion; A foam fire extinguishing system comprising:

4. The foam fire extinguishing system according to claim 3, The shaft hole is a stepped shaft hole having a first shaft hole with a first inner diameter and a second shaft hole with a second inner diameter smaller than the first inner diameter, and an annular groove is formed at a predetermined position of the first shaft hole, the shaft portion is a stepped shaft portion having a first shaft portion with a first outer diameter corresponding to the first inner diameter and a second shaft portion with a second outer diameter corresponding to the second inner diameter, and an annular protrusion is formed at a predetermined position of the second shaft portion in correspondence with the annular groove of the shaft hole, The foam fire extinguishing system is characterized in that the anti-slip structure includes an anti-slip ring disposed between the annular groove and the annular protrusion.

5. The foam fire extinguishing system according to claim 3, The sealing structure includes: an annular sealing groove formed on an inner periphery of the shaft hole or an outer periphery of the shaft portion; a sealing ring made of a soft material fitted in the annular sealing groove; A foam fire extinguishing system comprising:

6. The foam fire extinguishing system according to claim 3, The manual start device further includes a removable cover for covering the start valve having the operating handle, The cover has an open end surface on the installation surface side, a U-shaped notched fitting portion is formed on the piping surface side, and the open end surface is attached in a tight contact state to the installation surface, characterized in that the cover is an open end surface on the installation surface side,

7. The foam fire extinguishing system according to claim 1, A foam fire extinguishing system characterized in that at least a portion of the sensing piping is flexible piping.

8. The foam fire extinguishing system according to claim 1, A foam fire extinguishing system characterized in that the portion of the sensing piping connected to the inlet of the start valve is freely rotatable around the longitudinal axis of the piping.

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