JP7393215B2 - Simultaneous release valves for firefighting equipment, open type sprinkler equipment, and pre-activated water flow detection devices - Google Patents

Description

The present invention provides a simultaneous release valve for firefighting equipment in which a flow path for extinguishing agent in the valve chamber is closed or opened by increasing or decreasing the water pressure in the valve chamber, and an open type sprinkler using this simultaneous release valve for firefighting equipment. Regarding equipment and pre-activation type running water detection device.

Generally, fire sprinkler equipment sprays extinguishing agents such as water at high pressure when a fire occurs, and is divided into closed type and open type.

Closed type sprinkler equipment includes wet type, dry type, pre-activation type, etc., and closed type sprinkler heads are used in which the exit of the extinguishing agent is closed during normal times. On the other hand, open-type sprinkler equipment uses an open-type sprinkler head whose extinguishing agent outlet is open during normal conditions, and a simultaneous release valve. Open-type sprinkler equipment releases extinguishing agent all at once from a large number of open-type sprinkler heads installed in the protected area by opening the release valve all at once when a fire occurs. This type of open sprinkler system is effective in suppressing fires in the initial stages.

The simultaneous release valve is closed during normal times, and is opened and operated when a fire breaks out or when inspecting firefighting equipment. In normal times, the piping serving as the primary flow path of the simultaneous release valve is connected to a water tank installed in a building that is free from freezing. The inside of the pipe serving as the primary flow path is filled with pressurized extinguishing agent. On the other hand, since the piping serving as the secondary flow path of the simultaneous release valve may be installed on the outer wall of a building and connected to a sprinkler head, there is a risk of freezing. Therefore, the piping serving as the secondary flow path is a dry piping whose inside is filled with air.

A simultaneous release valve is closed or opened by increasing or decreasing the water pressure in a valve chamber in which the valve is provided. The water pressure in the valve chamber that operates the valve is increased by the water pressure of the extinguishing agent supplied from the primary flow path, and the valve is maintained in a well-closed state.

When a fire is detected when a fire occurs, for example, a solenoid valve of a simultaneous release valve is opened, and the fire extinguishing agent in the valve chamber flows out. As a result, the water pressure that had kept the valves closed is lost, and the simultaneous opening valves become completely open. Then, the high-pressure extinguishing agent that flows into the simultaneous release valve from the primary flow path by the fire extinguishing pump is sprayed from a plurality of open sprinkler heads connected to the secondary flow path.

As a prior art related to such a simultaneous release valve for firefighting equipment, the following [Patent Document] is listed as Republic of Korea Patent Application Publication No. 10-2014-0024611 (Publication date: March 3, 2014, hereinafter referred to as "Patent Document") 1) "Opening/closing device for simultaneous release valve for fire extinguishing equipment."

The opening/closing device for a simultaneous release valve for firefighting equipment disclosed in Patent Document 1 includes an inflow chamber into which a fire extinguishing agent flows, an outflow chamber through which the fire extinguishing agent flows out through the inflow chamber, and an inflow chamber and an outflow chamber controlled by hydraulic pressure. a diaphragm that opens and closes the flow path between the diaphragm chamber, a diaphragm chamber in which this diaphragm is installed, a shutoff valve that is connected to the primary side of the inflow chamber and that opens and closes the inflow of extinguishing agent, and a The configuration includes a connection line to be connected, and a first manual valve that is connected to the middle of the connection line and opens and closes the inflow of the extinguishing agent into the diaphragm chamber.

Republic of Korea Patent Application Publication No. 10-2014-0024611 Japanese Patent Application Publication No. 10-299938 Utility Model Publication No. 6-50667

<Pressure loss problem>
Patent Document 1 does not disclose the mechanical structure of a simultaneous release valve for firefighting equipment. Therefore, JP-A-10-299938 (Patent Document 2) and Utility Model Application Publication No. 6-50667 (Patent Document 3) are given as examples.

As disclosed in Patent Documents 2 and 3, in the conventional simultaneous release valve for firefighting equipment, the primary side inlet and the secondary side outlet have a linear shape with a common central axis. On the other hand, the central axes of the valve and the valve seat are perpendicular to the central axes of the primary inlet and secondary outlet.

Because of this configuration, in conventional simultaneous release valves for firefighting equipment, when the valve is in the open state, the extinguishing agent that flows in from the primary side inlet detours toward the valve chamber. It flows out to the secondary side outlet. That is, the extinguishing agent does not flow straight from the primary inlet to the secondary outlet, but must bypass the valve chamber. Such "flow path bending" causes a pressure loss of the extinguishing agent between the primary side inlet and the secondary side outlet. The pressure loss of the extinguishing agent caused by the simultaneous opening valve reduces the amount of extinguishing agent released per unit time from the plurality of sprinklers.

<Problem with opening/closing mechanism>
As disclosed in Patent Documents 2 and 3, conventional simultaneous release valves for firefighting equipment were equipped with an opening/closing mechanism for operating the valve (diaphragm or piston valve). The opening/closing mechanism requires sealing of moving parts such as a shaft (stem or spindle) for opening and closing the valve, resulting in a complicated structure with a large number of parts.

<Water hammer problem>
When a valve opens or closes rapidly, shock and high water pressure are generated within the flow path due to the inertia of the fluid. Such a phenomenon is generally called water hammer. In order to prevent such water hammer, the simultaneous release valve for firefighting equipment of Patent Document 2 restricts rapid movement of the diaphragm by providing a pressure holding valve ₁₉₁ . Moreover, the simultaneous release valve for firefighting equipment of Patent Document 3 includes a safety valve 27 in the piston valve 21 to eliminate abnormally high pressure in the piping.

However, the configurations disclosed in Patent Documents 2 and 3 have a complicated valve structure that is generally referred to as a "parent-child valve structure," which is difficult to maintain, and requires time and effort to maintain the simultaneous release valve for firefighting equipment. On the other hand, unless a complicated parent-child valve structure is adopted, simultaneous release valves for firefighting equipment would open and close rapidly in response to changes in pressure, resulting in water hammer inside the piping. Therefore, it is desirable to prevent water hammer with an extremely simple configuration.

<Problems with piping connection method>
As disclosed in Patent Documents 2 and 3, the conventional simultaneous release valve for firefighting equipment is provided with a flange for connecting piping integrally with the valve body. For this reason, conventional simultaneous release valves for firefighting equipment can only be connected to piping provided with flanges. In the field of firefighting equipment, various types of joints other than the flange type are used. In particular, the one-touch joint by connecting a coupling and a groove is very convenient because it does not require bolts, nuts, or tools for connection. As described above, if a simultaneous opening valve for firefighting equipment having the same configuration can be combined with various types of joints including a flange type, its uses will be greatly expanded.

The present invention has been made in view of the above-mentioned problems, and provides a simultaneous release valve for firefighting equipment that enables the following A) to D), an open type sprinkler system using this simultaneous release valve for firefighting equipment, and a fire prevention equipment. An object of the present invention is to provide an actuated running water detection device.
A) Significantly reduce pressure loss of extinguishing agent B) Significantly reduce opening/closing mechanism C) Reduce water hammer D) Connect with various types of joints

(1) In order to achieve the above object, the simultaneous release valve for firefighting equipment of the present invention is a firefighting equipment in which the flow path of the extinguishing agent in the valve chamber is closed or opened by increasing or decreasing the water pressure in the valve chamber. The valve body includes a valve body, a frame-shaped valve body, and a cylindrical packing, and the valve body includes the valve chamber, the primary inlet for the extinguishing agent, and the inlet for the extinguishing agent. the primary side inlet and the secondary side outlet are provided in the valve body so as to face each other, and the frame-shaped valve body and the secondary side outlet are provided inside the valve chamber. The cylindrical packing is accommodated, and the frame-shaped valve body includes a block body that blocks the flow of the extinguishing agent, supports the block body in the middle of the flow path, and allows the extinguishing agent to pass through. The cylindrical packing is a cylindrical body made of an elastically deformable material, has an inner shape corresponding to the outer shape of the frame-shaped valve body, and has the frame-shaped valve body inside. It is possible to accommodate a valve body, and when the water pressure on the outside of the cylindrical packing in the valve chamber is higher than the water pressure on the inside, the valve body enters a first form in which it comes into close contact with the frame-shaped valve body, and the frame-shaped A second mode in which the flow path of the extinguishing agent is closed together with the valve body, and when the water pressure on the outside of the cylindrical packing in the valve chamber is lower than the water pressure on the inside, it separates from the frame-shaped valve body, The flow path for the extinguishing agent is opened.

(2) Preferably, in the simultaneous release valve for firefighting equipment according to (1) above, the primary side inlet, the secondary side outlet, the frame-shaped valve body, and the cylindrical packing are aligned with each other's central axes. share.

(3) Preferably, in the simultaneous release valve for firefighting equipment according to (1) or (2) above, the frame-shaped valve body includes two frames each having a substantially truncated conical shape, each frame having a small diameter. The plurality of plate-shaped supporters are arranged radially at regular intervals between a first ring plate and a second ring plate having a large diameter, and the block body has two supporters facing each other. The ring is supported between the first ring plates.

(4) Preferably, in the simultaneous release valve for firefighting equipment according to (3) above, each of the first ring plate, the second ring plate, and the plurality of supporters constituting the frame is made of a stainless steel plate.

(5) Preferably, in the simultaneous release valve for firefighting equipment according to (4) above, grooves arranged radially are formed in each of the first and second ring plates, and at both ends of each supporter, A missing step portion and a protrusion protruding beyond the step portion are provided, and each supporter is welded to the first and second ring plates with the protrusion inserted into the groove.

(6) Preferably, the simultaneous release valve for firefighting equipment according to any one of (3) to (5) above includes a support plate interposed between the two first ring plates facing each other, and the two first ring plates The two frame bodies, the support plate, and the two block bodies are assembled together by fixing the two block bodies to the front and back surfaces of the support plate from the back side of each plate. It constitutes a frame-shaped valve body.

(7) Preferably, in the simultaneous release valve for firefighting equipment according to (6) above, each of the two block bodies has a substantially conical shape, and the bottom surface of each block body is fixed to the front and back surfaces of the support plate, respectively. Ru.

(8) Preferably, in the simultaneous release valve for firefighting equipment according to (6) or (7) above, the peripheral edge of the support plate slightly protrudes outward from the peripheral edge of the two first ring plates, and A recessed portion having a shape corresponding to the peripheral edge of the support plate is provided at the center of the inner surface of the cylindrical packing, and when the cylindrical packing is in the first form, the recessed portion corresponds to the peripheral edge of the support plate. closely adhere to.

(9) Preferably, in the simultaneous release valve for firefighting equipment according to any one of (1) to (8) above, the primary side joint connected to the piping of the primary side flow path and the piping of the secondary side flow path. a secondary side joint connected to the primary side inlet of the valve body, the primary side joint being replaceably connected to the primary side inlet of the valve body, and the secondary side joint being connected to the secondary side inlet of the valve body. Exchangeably connected to the outlet.

(10) Preferably, in the simultaneous release valve for firefighting equipment according to (9) above, the valve is connected between the valve body and the primary joint, and supplies a fire extinguishing agent from the primary joint into the valve chamber. and a drain pipe connected to the valve body to drain the extinguishing agent in the valve chamber.

(11) In the simultaneous release valve for firefighting equipment according to (9) or (10) above, the primary side joint may be connected to another flange for connecting to one flange of the piping of the primary side flow path, or the above-mentioned It has a groove for connecting to the coupling of the piping of the primary side flow path.

(12) In the simultaneous release valve for firefighting equipment according to any one of (9) to (11) above, the secondary side joint has another flange for connecting with one flange of the piping of the secondary side flow path. , or has a groove for connection to a coupling of the piping of the secondary flow path.

(13) In order to achieve the above object, the open type sprinkler equipment of the present invention provides a simultaneous release valve for firefighting equipment according to any one of (1) to (12) above, and a simultaneous release valve for firefighting equipment from the above-mentioned simultaneous release valve for firefighting equipment. a plurality of open sprinkler heads supplied with extinguishing agent.

(14) In order to achieve the above object, the pre-actuation type flowing water detection device of the present invention includes the simultaneous release valve for firefighting equipment according to any one of the above (1) to (12), and the simultaneous release valve for firefighting equipment according to any one of the above (1) to (12). and a detection means for detecting the flow of the extinguishing agent when the flow path is opened.

Here, the term "extinguishing agent" in this specification refers to water, water with infiltrating agent, etc., foam extinguishing agent (including aqueous solution), reinforced liquid extinguishing agent, and other extinguishing agents that are liquid within the operating temperature range. include.

The simultaneous opening valve for firefighting equipment of the present invention is characterized in that the cylindrical packing deforms into the first or second form with respect to the frame-shaped valve body fixed in the valve body, and opens and closes the flow path of the extinguishing agent. It has a new valve structure not found in conventional technology. With such a novel valve structure, the simultaneous release valve for firefighting equipment of the present invention, the open type sprinkler equipment using the simultaneous release valve for firefighting equipment, and the pre-actuation type flowing water detection device each have the above-mentioned A) to D). is possible.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view showing a simultaneous release valve for firefighting equipment according to a first embodiment of the present invention. It is a side view showing the above-mentioned simultaneous release valve for firefighting equipment. It is an exploded perspective view showing the above-mentioned simultaneous release valve for firefighting equipment. It is a sectional view showing the closed state of the above-mentioned simultaneous opening valve for firefighting equipment. It is a sectional view showing the open state of the above-mentioned simultaneous release valve for firefighting equipment. It is a sectional view showing a simultaneous release valve for firefighting equipment according to a second embodiment of the present invention.

The embodiments of the present invention described below are examples for explaining the structure and function, and the scope of rights of the present invention should not be interpreted as being limited by the description or embodiments of this specification.

In other words, the embodiments can be changed in various ways and taken into various forms, so the scope of rights of the present invention should be understood to include equivalents that can realize the technical idea thereof. It is.

Further, the objects and effects of the present invention presented in this specification do not mean that a particular embodiment includes all of them, nor does it mean that only such effects must be included. It should not be understood that the scope of the rights of the present invention is limited by such interpretation.

Hereinafter, the configuration and effects of a preferred embodiment that can effectively reproduce the features of the present invention will be described in detail with reference to the drawings attached to the application.

<First embodiment>
FIG. 1 is a perspective view showing a simultaneous release valve for firefighting equipment according to a first embodiment of the present invention. FIG. 2 is a side view of the simultaneous release valve for firefighting equipment of this embodiment. FIG. 3 is an exploded perspective view of the simultaneous release valve for firefighting equipment of this embodiment. 4 and 5 are cross-sectional views showing the closed state and open state of the firefighting equipment simultaneous release valve of this embodiment.

The simultaneous release valve for firefighting equipment of this embodiment shown in these drawings includes a valve body 100, a frame-shaped valve body (240a, 240b, 250, 270, 280), a cylindrical packing 310, a primary side joint 110a, and a secondary side joint 110a. It is characterized by being composed of a side joint 110b. The valve chamber of the valve body 100 includes a primary inflow chamber 200a, a secondary outflow chamber 200b, and a packing chamber 300, and the cylindrical packing 310 operates within the packing chamber 300. The primary joint 110a and the secondary joint 110b are connected to respective piping as a primary flow path and a secondary flow path (not shown).

Although not shown, the piping as the primary flow path is connected to a pump for supplying extinguishing agent to the firefighting equipment simultaneous release valve. On the other hand, the piping as the secondary flow path is connected to a number of open sprinkler heads installed in the area to be protected.

As shown in FIG. 4, connection flanges 101 are provided at the upper and lower parts of the valve body 100. For example, the opening inside the lower connecting flange 101 is the primary side inlet, the opening inside the upper connecting flange 101 is the secondary side outlet, and the extinguishing agent that has flowed in from the primary side is transferred to the valve body. 100 and is supplied to the secondary side. The valve chamber within the valve body 100 is divided into a primary inflow chamber 200a, a secondary outflow chamber 200b, and a packing chamber 300 by a frame-shaped valve body.

As shown in FIG. 3, the frame-shaped valve body includes two frames each having a substantially truncated cone shape, each frame consisting of a first ring plate 240a with a small diameter and a second ring plate 240b with a large diameter. In between, a plurality of plate-shaped supporters 250 are arranged radially at regular intervals. A circular support plate 270 is interposed between the two first ring plates 240a facing each other. Bolt holes 271 are provided on the front and back surfaces of the support plate 270, respectively. By fixing the two block bodies 280 to each bolt hole 271 of the support plate 270 from the back side of each of the two first ring plates 240a, the two frame bodies (240a, 240b, 250) and the support plate 270 are fixed. A frame-shaped valve body is constructed by integrally assembling the two block bodies 280.

As shown in FIG. 4, in the valve body 100, the inside of the frame located on the primary side of the frame-shaped valve body becomes a primary side inflow chamber 200a. The inside of the frame located on the secondary side of the frame-shaped valve body becomes a secondary side outflow chamber 200b. Furthermore, the outer side of the two integrally assembled frames becomes a packing chamber 300 extending from the primary side to the secondary side within the valve body 100. The plurality of supporters 250 constituting the two frames form a flow path 260 for extinguishing agent from the primary inflow chamber 200a through the packing chamber 300 to the secondary outflow chamber 200b.

Here, in the frame-shaped valve body of this embodiment, the first ring plate 240a, the second ring plate 240b, and the plurality of supporters 250 that constitute each frame are each made of a stainless steel plate. It is also possible to cast the entire frame-shaped valve body, but in the case of casting, the thickness of the plurality of supporters 250 must be increased in order to obtain sufficient strength. By making the frame-shaped valve body from a stainless steel plate as in this embodiment, the wall thickness of the plurality of supporters 250 can be reduced, and the area of the flow path 260 can be expanded to the maximum.

In such a case, only the plurality of supporters 250 may be formed of a stainless steel plate to expand the area of the passage 260, but as in this embodiment, the first ring plate 240a, the second ring plate 240b and the plurality of supports 250 may be formed of stainless steel plates. If all of the supports 250 are made of stainless steel plates, welding between these parts becomes easy and the durability of the frame-shaped valve body can be improved.

As shown in the enlarged view in FIG. 5, grooves 241 arranged radially are formed in each of the first and second ring plates 240a and 240b. On the other hand, both ends of each supporter 250 are provided with a chipped step portion 251 and a projection portion 252 that protrudes beyond the step portion 251. Each supporter 250 is welded to the first and second ring plates 240a and 240b with the protrusion 252 inserted into the groove 241.

The stepped portion 251 of each supporter 250 is supported on one surface of the first and second ring plates 240a and 240b, and the protrusion 252 of each supporter 250 is in the groove portion of the first and second ring plates 240a and 240b. 241, and the parts are welded together. As a result, the clamping force and durability between each component can be improved.

As shown in FIG. 4, the support plate 270 is held between the holes of the two first ring plates 240a facing each other. As already mentioned, bolt holes 271 are provided on the front and back surfaces of the support plate 270, respectively, and two blocks 280 are fixed to each bolt hole 271, respectively. Each block body 280 has a substantially conical shape, and its bottom surface is fixed to the front and back surfaces of the support plate 270, respectively. The generally conical surface of the block body 280 promotes smooth flow of extinguishing agent and reduces pressure loss. Such a block body 280 serves to close each hole of the two first ring plates 240a and to integrally connect the two frames forming the primary inflow chamber 200a and the secondary outflow chamber 200b. .

The cylindrical packing 310 is a cylindrical body made of an elastically deformable material, has an inner shape corresponding to the outer shape of the frame-shaped valve element, and is capable of accommodating the frame-shaped valve element therein. As shown in FIG. 4, in the valve body 100, when the water pressure in the packing chamber 300 is greater than or equal to the water pressure in the primary inflow chamber 200a, the cylindrical packing 310 assumes the first form in which it comes into close contact with the frame-shaped valve body. Then, the extinguishing agent flow path 260 formed by the plurality of supporters 250 is closed. On the other hand, as shown in FIG. 5, in the valve body 100, when the water pressure in the packing chamber 300 is lower than the water pressure in the primary side inflow chamber 200a, the cylindrical packing 310 moves away from the frame-shaped valve body. This opens the extinguishing agent flow path 260 formed by the plurality of supporters 250. The cylindrical packing 310 is preferably made of natural or synthetic rubber material, for example, ethylene propylene diene rubber (EPDM) having a hardness of 75±5.

Note that, since the water pressure in the packing chamber 300 is given from the primary flow path, it is theoretically the same as the water pressure in the primary inflow chamber 200a, and does not exceed the water pressure in the primary inflow chamber 200a. When the water pressure in the packing chamber 300 becomes the same as the water pressure in the primary inflow chamber 200a, the cylindrical packing 310 assumes the first form in which it comes into close contact with the frame-shaped valve body due to its own elasticity.

Here, as shown in the enlarged views in FIGS. 4, 5, and 6, the peripheral edge of the support plate 270 protrudes slightly outward from the peripheral edges of the two first ring plates 240a. On the other hand, a recess 311 having a shape corresponding to the peripheral edge of the support plate 270 is provided at the center of the inner surface of the cylindrical packing 310 . When the cylindrical packing 310 is in the first form, the recess 311 sandwiches the peripheral edge of the support plate 270 and comes into close contact therewith. The close contact between the recess 311 and the peripheral edge of the support plate 270 effectively blocks the flow of extinguishing agent from the primary inflow chamber 200a to the secondary outflow chamber 200b when the cylindrical packing 310 is in the closed state.

As shown in FIG. 3, the primary joint 110a and the secondary joint 110b are flange-type joints, and flanges 111 and 112 are provided at both ends, respectively. By fastening one flange 111 of the primary joint 110a to the primary connecting flange 101 of the valve body 100 with bolts, the primary joint 110a becomes integral with the valve body 100. On the other hand, by fastening one flange 111 of the secondary joint 110b to the connecting flange 101 on the secondary side of the valve body 100 with bolts, the secondary joint 110b becomes integral with the valve body 100. In this way, by making the primary joint 110a and the secondary joint 110b separate parts from the valve body 100, various types of joints other than the flange type (for example, the coupling type joint shown in FIG. 6) can be used. It becomes possible to exchange.

Note that a flange (not shown) provided on a pipe serving as a primary flow path is fastened with a bolt to the other flange 112 of the primary joint 110a. A flange (not shown) provided on a pipe serving as a secondary flow path is fastened to the flange 112 of the secondary joint 110b with bolts.

As shown in FIG. 4, a water supply pipe 120 is connected between the valve body 100 and the primary joint 110a. A manual first ball valve 121 is connected in the middle of this water supply pipe 120. The water supply pipe 120 communicates the packing chamber 300 of the valve body 100 with the inside of the primary joint 110a. When the first ball valve 121 is opened, the extinguishing agent that has flowed into the primary joint 110a from the primary flow path is supplied into the packing chamber 300 through the water supply pipe 120. As a result, the water pressure in the packing chamber 300 becomes higher than the water pressure in the primary side inflow chamber 200a, and the cylindrical packing 310 assumes the first form in close contact with the frame-shaped valve body, and the extinguisher is formed by the plurality of supporters 250. The agent flow path 260 is closed.

Further, a drain pipe 130 is connected to the valve body 100. An automatic solenoid valve 131 and a manual second ball valve 132 are connected in the middle of this drain pipe 130. Drain pipe 130 connects packing chamber 300 to the outside. When either the solenoid valve 131 or the second ball valve 132 is opened, the extinguishing agent filling the packing chamber 300 is drained to the outside. As a result, the water pressure in the packing chamber 300 becomes lower than the water pressure in the primary inflow chamber 200a, and the cylindrical packing 310 becomes in the second form separated from the frame-shaped valve body and is formed by the plurality of supporters 250. The extinguishing agent flow path 260 is opened.

As shown in FIGS. 1 and 2, a test pipe 140 is connected between the primary joint 110a and the secondary joint 110b. A pressure sensor 141, a pressure gauge 142, and a manual third ball valve 143 are connected in the middle of this test pipe 140. Further, a manual drain valve 150 is connected to the secondary joint 110b. When the third ball valve 143 is opened during inspection of firefighting equipment, the extinguishing agent that has flowed into the primary joint 110a from the primary flow path passes through the test pipe 140 and enters the secondary joint 110b. Direct inflow. The extinguishing agent that has flowed into the secondary joint 110b can be drained to the outside via the drain valve 150.

<Second embodiment>
FIG. 6 is a sectional view showing a simultaneous release valve for firefighting equipment according to a second embodiment of the present invention. As already mentioned, the simultaneous release valve for firefighting equipment of this embodiment has the primary side joint 110a and the secondary side joint 110b as separate parts from the valve body 100, so that various types of joints other than the flange type can be used. can be exchanged for.

In the simultaneous release valve for firefighting equipment of the second embodiment shown in FIG. 6, the primary side joint 110a and the secondary side joint 110b are each a coupling type joint. That is, in FIG. 6, a groove 113 is formed in the primary joint 110a for connection to a coupling (not shown) provided in the piping of the primary flow path. Similarly, the secondary joint 110b is also formed with a groove 113 for connection to a coupling (not shown) provided in the piping of the secondary flow path.

The coupling (not shown) can be connected to each groove 113 of the primary joint 110a and the secondary joint 110b with one touch without requiring bolts, nuts, or tools, making the piping connection work faster and easier. It becomes possible to do so.

<Effect>
In the simultaneous release valve for firefighting equipment of the first and second embodiments described above, the cylindrical packing 310 is fixed to the frame-shaped valve body (240a, 240b, 250, 270, 280) inside the valve body 100. It has a novel valve structure not found in the prior art, which transforms into the first or second form to open and close the extinguishing agent flow path. With such a novel valve structure, the simultaneous opening valve for firefighting equipment of each embodiment achieves the effects described below.

<<Reduction of pressure loss>>
The simultaneous release valve for firefighting equipment of the first and second embodiments described above can significantly reduce the pressure loss of the extinguishing agent. That is, as shown in FIGS. 4 to 6, the simultaneous opening valve for firefighting equipment of each embodiment includes, in order from the primary side, a primary side inflow chamber 200a, a frame-shaped valve body (240a, 240b, 250, 270 , 280), the central axes of the cylindrical packing 310 and the secondary outflow chamber 200b are aligned. This means that there is no "bend in the flow path" of the extinguishing agent in the valve body 100. Therefore, as shown by the arrow in FIG. 5, the extinguishing agent supplied to the valve body 100 flows almost straight from the primary inflow chamber 200a to the secondary outflow chamber 200b. As a result, the pressure loss of the extinguishing agent between the primary inlet and the secondary outlet is significantly reduced. By reducing the pressure loss of the extinguishing agent, water can be effectively sprayed from multiple open sprinkler heads installed in the protected area, resulting in extremely good initial suppression of the fire.

Furthermore, the frame-shaped valve body forming the flow path 260 for the extinguishing agent is constituted by thin plate materials such as a first ring plate 240a, a second ring plate 240b, and a plate-shaped supporter 250. This configuration makes it possible to maximize the area of the extinguishing agent flow path 260. As a result, the pressure loss of the extinguishing agent between the primary inlet and the secondary outlet is further reduced.

<<Reduction of opening/closing mechanism>>
The cylindrical packing 310, which is a cylinder made of an elastically deformable material, opens and closes the extinguishing agent flow path 260 by deforming into the first form shown in FIG. 4 and the second form shown in FIG. There is. Therefore, there is no need for any mechanical mechanism to open and close the cylindrical packing 310, and there is no need to seal the moving parts, making it possible to significantly reduce the number of parts and greatly simplify the structure. can.

<<Water Hammer Reduction>>
In conventional simultaneous release valves, the opening and closing mechanism rapidly opens and closes the valve, resulting in water hammer within the flow path. On the other hand, in the cylindrical packing 310 of each embodiment, the rubber cylindrical body contracts and expands according to the differential pressure between the packing chamber 300 and the primary inflow chamber 200a. It gradually transforms into the second form shown in FIG. As a result, water hammer at the opening and closing points is significantly reduced. In particular, in the simultaneous opening valve for firefighting equipment of each embodiment, even if the "parent-child valve structure" as disclosed in Patent Documents 2 and 3 is not provided, the cylindrical packing 310 does not undergo sudden deformation, so the structure is greatly simplified, and maintenance of the simultaneous release valve for firefighting equipment becomes extremely easy.

<<Joint replacement>>
In the simultaneous release valve for firefighting equipment of each embodiment, by making the primary side joint 110a and the secondary side joint 110b separate parts from the valve body 100, it is possible to replace them with various types of joints including a flange type. . As a result, it is possible to combine the simultaneous release valve for firefighting equipment with the same configuration with various types of joints, and its uses are greatly expanded.

<<Applications of simultaneous release valve for firefighting equipment>>
The simultaneous release valve for firefighting equipment of each embodiment can constitute an open type sprinkler equipment together with an open type sprinkler head in which the outlet of the fire extinguishing agent is open during normal times. Specifically, piping of a secondary flow path (not shown) is connected to the secondary joint 110b of the simultaneous release valve for firefighting equipment, and a plurality of open sprinkler heads are connected to the piping of the secondary flow path. do. When a fire breaks out, the fire extinguishing agent is simultaneously supplied to a plurality of open sprinkler heads installed in the protected area by opening the firefighting equipment release valve all at once.

Moreover, the simultaneous release valve for firefighting equipment of each embodiment can be used as a pre-actuation type flowing water detection device by providing a flowing water detection means. The detection means detects the flow of extinguishing agent when the flow path of the firefighting equipment simultaneous release valve is opened. An alarm is issued based on the detection result of the detection means.

100 Valve body 101 Connection flange 110a Primary joint 110b Secondary joint 111, 112 Flange
113 Groove 120 Water supply pipe 121 First ball valve 131 Solenoid valve 132 Second ball valve 140 Test pipe 141 Pressure sensor 142 Pressure gauge 143 Third ball valve 150 Drain valve 200a Primary inflow chamber 200b Secondary outflow chamber 240a First Ring plate 240b Second ring plate 241 Groove portion 250 Supporter 251 Step portion 252 Projection portion 260 Channel 270 Support plate 271 Bolt hole 280 Block body 300 Packing chamber 310 Cylindrical packing 311 Recessed portion

Claims (11)

A simultaneous release valve for firefighting equipment in which a flow path for extinguishing agent in the valve chamber is closed or opened by increasing or decreasing water pressure in the valve chamber,
including a valve body, a frame-shaped valve body, and a cylindrical packing,
The valve body includes the valve chamber, a primary inlet for the extinguishing agent, and a secondary outlet for the extinguishing agent, and the primary inlet and the secondary outlet include: provided in the valve body so as to face each other, and the frame-shaped valve body and the cylindrical packing are housed inside the valve chamber;
The frame-shaped valve body includes a block body that blocks the flow of the extinguishing agent, and a plurality of supporters that support the block body in the middle of the flow path and allow the extinguishing agent to pass,
The cylindrical packing is a cylindrical body made of an elastically deformable material, has an inner shape corresponding to an outer shape of the frame-shaped valve body, and is capable of accommodating the frame-shaped valve body therein. When the water pressure on the outside of the cylindrical packing in the valve chamber is higher than the water pressure on the inside, it becomes a first form in which it comes into close contact with the frame-shaped valve body, and the flow of the extinguishing agent together with the frame-shaped valve body. When the water pressure on the outside of the cylindrical packing in the valve chamber is lower than the water pressure on the inside, a second mode of separating from the frame-shaped valve body opens the flow path for the extinguishing agent. let me ,
The frame-shaped valve body includes two frame bodies each having a substantially truncated cone shape, and each frame body includes a plurality of plate-shaped ring plates between a first ring plate having a small diameter and a second ring plate having a large diameter. supports are arranged radially at regular intervals, and the block body is supported between the two first ring plates facing each other,
A support plate interposed between the two first ring plates facing each other is provided, and the two block bodies are respectively fixed to the front and back surfaces of the support plate from the back side of each of the two first ring plates. The two frame bodies, the support plate, and the two block bodies constitute the frame-shaped valve body, and
The peripheral edge of the support plate slightly protrudes outward from the peripheral edge of the two first ring plates, and the inner surface of the cylindrical packing has a recessed portion having a shape corresponding to the peripheral edge of the support plate. A simultaneous release valve for firefighting equipment , wherein the concave portion is in close contact with a peripheral edge of the support plate when the cylindrical packing is in a first configuration . The simultaneous release valve for firefighting equipment according to claim 1, wherein the primary inlet, the secondary outlet, the frame-shaped valve body, and the cylindrical packing share a mutual central axis. The simultaneous release valve for firefighting equipment according to claim 1 , wherein each of the first ring plate, the second ring plate, and the plurality of supporters that constitute the frame body is made of a stainless steel plate. Grooves arranged radially are formed in each of the first and second ring plates,
Both ends of each supporter are provided with a missing step portion and a protrusion that protrudes beyond the step portion,
The simultaneous release valve for firefighting equipment according to claim 3 , wherein each supporter is welded to the first and second ring plates with the protrusion inserted into the groove. The simultaneous release valve for firefighting equipment according to claim 1 , wherein each of the two block bodies has a substantially conical shape, and the bottom surface of each block body is fixed to the front and back surfaces of the support plate, respectively. The primary side joint is connected to the piping of the primary side flow path, and the secondary side joint is connected to the piping of the secondary side flow path, and the primary side joint is connected to the primary side of the valve body. 6. The joint for fire fighting equipment according to any one of claims 1 to 5 , wherein the valve body is exchangeably connected to the inlet, and the secondary joint is exchangeably connected to the secondary outlet of the valve body. release valve. a water supply pipe connected between the valve body and the primary joint for supplying a fire extinguishing agent from the primary joint into the valve chamber;
a drain pipe connected to the valve body for draining the extinguishing agent in the valve chamber;
The simultaneous release valve for firefighting equipment according to claim 6 , comprising: The primary side joint has another flange for connecting with one flange of the piping of the primary side flow path or a groove for connecting with a coupling of the piping of the primary side flow path. A simultaneous release valve for firefighting equipment as described in item 6 or 7 . The secondary side joint has another flange for connecting with one flange of the piping of the secondary side flow path or a groove for connecting with a coupling of the piping of the secondary side flow path. The simultaneous release valve for firefighting equipment according to any one of Items 6 to 8 . An open type sprinkler head comprising: the simultaneous release valve for firefighting equipment according to any one of claims 1 to 9 ; and a plurality of open type sprinkler heads to which a fire extinguishing agent is supplied all at once from the simultaneous release valve for firefighting equipment. Sprinkler equipment. The simultaneous release valve for firefighting equipment according to any one of claims 1 to 9 , and a detection means for detecting the flow of the extinguishing agent when the flow path of the simultaneous release valve for firefighting equipment is opened. Equipped with a pre-activated water flow detection device.