JP2012152261A - Fire-extinguishing equipment - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide fire-extinguishing equipment enabling an accurate discharge test by imparting the pressure loss of the joint used in the attachment of a fire-extinguishing head in the discharge test.SOLUTION: A closed type sprinkler head 18 is attached to fire-extinguishing equipment piping 10 through a T-shaped joint 15 equipped with a stagnation water preventing structure and a terminal tester 20 is provided on a terminal side. The terminal tester 20 is equipped with a testing multidirectional joint 15a having the stagnation water preventing structure, which generates pressure loss equal to that of the T-shaped joint of the sprinkler head 18, and an orifice 34, which generates displacement equal to the operation of one sprinkler head 18 and, in a case that a terminal test valve 24 is operated so as to be opened, discharge pressure is displayed on a pressure gauge 32 in a state that drainage is performed by the orifice 34 through the pressure loss generated in the testing T-shaped joint 15a to perform a test.

Description

The present invention relates to a fire extinguishing equipment in which, for example, a closed fire extinguishing head that operates by receiving a hot air current from a fire is installed in a pipe for supplying water.

  Conventionally, in general houses, apartment houses, group homes, and the like, there is known a fire extinguishing facility in which a closed sprinkler head is connected as a fire extinguishing head to the same pipe as the water supply, and the fire is extinguished using the water supply in the event of a fire.

  Here, the water pressure to the sprinkler head of a general house is required to be, for example, 0.05 MPa, and sufficient fire extinguishing performance can be obtained at the time of fire by ensuring a water supply pressure exceeding 0.05 MPa from the water supply.

  FIG. 6 shows a conventional water supply direct fire extinguishing system. For example, a water supply pipe 10 drawn into a general house is branched into a general equipment pipe 10a and a fire extinguishing equipment pipe 10b. A faucet 16 for the hand-washing 12 and bathtub 15 is connected to the general equipment piping 10a.

  For example, a closed sprinkler head 18 is connected to the fire-extinguishing equipment pipe 10b through a T-type joint 15 having a structure for preventing stagnant water separately for each room, and is connected to a water supply tank of the toilet 14 at the end of the pipe. . The closed-type sprinkler head 18 has a head opening closed by a valve member held by a heat-sensitive mechanism. When the heat-sensitive mechanism reaches a predetermined temperature in response to a thermal air flow caused by a fire, the valve member is detached by thermal decomposition. Open the head opening and sprinkle the tap water.

  The stagnant water prevention structure of the T-type joint 15 is designed so that part of the water flowing from the input port is on the branch port side so that no stagnant water is generated on the branch port side orthogonal to the input / output port to which the fire extinguishing equipment pipe 10b is connected. It has a partition structure that bypasses and flows to the output port.

  Further, a terminal test device 100 is provided at the end of the fire extinguishing equipment pipe 10 b so that the water discharge test can be performed without actually discharging water from the sprinkler head 18. In the terminal test apparatus 100, a terminal test valve 108 is connected to the secondary side of the gate valve 102, and an orifice 110 is connected to the secondary side for flowing a water discharge flow rate corresponding to the operation of one sprinkler head 18. The end is drained. A pressure gauge 106 is branched and connected to the primary side of the terminal test valve 108 through a gate valve 105 by a T-shaped joint 22.

  In the test operation by the end test apparatus 100, the gate valve 102 is opened to introduce tap water, and then the end test valve 108 is opened to flow a test flow rate corresponding to the operation of one sprinkler head 18 to the orifice 110. In this state, the gate valve 105 is opened, the primary pressure of the orifice 110 is introduced into the pressure gauge 106, and the water discharge pressure is read. For example, if a water discharge pressure of 0.05 MPa or more is obtained, it is determined as appropriate.

When the test is completed, the gate valve 102 is closed, and when draining is completed after a certain period of time, the end test valve 108 is closed.

JP-A-8-24360

  However, in such a conventional fire extinguishing system, during the water discharge test, the gate valve 102 and the end test valve 108 are opened, and a test flow rate corresponding to the operation of one sprinkler head 18 is passed through the orifice 110. The water pressure is read by the pressure gauge 106, but the T-type joint 15 used for the attachment of the sprinkler head 18 has a structure for preventing stagnant water. There is a pressure loss that occurs in the T-type joint 15, and the water discharge test does not consider the pressure loss of the T-type joint. There's a problem.

It is an object of the present invention to provide a fire extinguishing facility that allows a more accurate water discharge test by giving a pressure loss including a joint used for mounting a fire extinguishing head during a water discharge test.

The present invention is a fire extinguishing facility in which a closed fire extinguishing head is attached to a pipe via a multi-way joint having a stagnant water prevention structure.
A terminal test device is installed at the position of the pipe on the terminal side of the fire extinguishing head,
Terminal test equipment
A test multi-way joint with a stagnant water prevention structure that is inserted and connected to the pipe and generates the same pressure loss as the multi-way joint;
A terminal test valve connected to the branch port of the test multi-way joint;
An orifice that is arranged on the secondary side of the end test valve and that allows a flow rate equivalent to the operation of one fire extinguishing head;
With
When the terminal test valve is opened, the test is conducted by draining and testing from the orifice in a state where the pressure loss generated in the test multi-way joint is generated.

In another embodiment of the present invention, in a fire extinguishing equipment in which a closed fire extinguishing head is attached to a pipe through a multi-way joint having a stagnant water prevention structure,
A terminal test device is provided at the position of the pipe on the terminal side of the fire extinguishing head,
Terminal test equipment
A terminal test valve inserted and connected to the pipe;
A first orifice disposed on the secondary side of the terminal test valve and flowing a flow rate equivalent to the operation of one fire extinguishing head;
A second orifice connected in series to the first orifice and generating a pressure loss equivalent to a multi-way joint;
With
When the terminal test valve is opened, the test is performed by draining through the first orifice in a state where pressure loss is generated at the second orifice.

In another form of the present invention,
In fire extinguishing equipment with a closed fire extinguishing head attached to piping through a multi-way joint with stagnant water prevention structure,
A terminal test device is installed at the position of the pipe on the terminal side of the fire extinguishing head,
Terminal test equipment
A terminal test valve inserted and connected to the pipe;
An orifice that is arranged on the secondary side of the end test valve, generates a pressure loss equivalent to that of a multi-way joint, and flows a flow rate equivalent to the operation of one fire extinguishing head;
With
When the end test valve is opened, the test is conducted in a state where water is discharged through the orifice.

  According to the present invention, since the test is made to correspond to the fire extinguishing head attached through the multi-way joint where the pressure loss occurs with the stagnant water prevention structure, the end in the same situation as when water is actually discharged from the fire extinguishing head This can be realized with a test device, and a more accurate water discharge test can be performed.

In addition, the terminal test device has a structure for preventing the stagnant water for mounting the fire extinguishing head, using the pressure loss of the other joint equipped with the stagnant water preventing structure used for mounting the fire extinguishing head and the flow rate of the fire extinguishing water flowing by one fire extinguishing head A combination of a multi-way joint with an orifice and an orifice that flows the flow of one fire extinguishing head, or a flow of one orifice and a fire extinguishing head that generates the same pressure loss as a multi-way joint with a stagnant water prevention structure for mounting a fire extinguishing head By using a combination of flowing orifices, a test water discharge equivalent to an actual water discharge can be performed easily and accurately, and a more accurate end test can be performed.

Explanatory drawing which showed embodiment of the fire extinguishing equipment by this invention Explanatory drawing showing an embodiment of a T-shaped joint used in the present invention Explanatory drawing which showed other embodiment of the fire extinguishing equipment by this invention Explanatory drawing which showed other embodiment of the fire extinguishing equipment by this invention Sectional view showing the orifice used in FIG. Explanatory drawing showing conventional fire extinguishing equipment directly connected to water supply piping

  FIG. 1 is an explanatory view showing an embodiment of a fire extinguishing facility according to the present invention. In FIG. 1, for example, a water supply pipe 10 drawn into a general house is branched into a general equipment pipe 10a and a fire extinguishing equipment pipe 10b. A faucet 16 for the hand-washing 12 and bathtub 15 is connected to the general equipment piping 10a.

  The fire extinguishing equipment pipe 10b uses a T-type joint 15 as a multi-way joint having a structure for preventing stagnant water through a control valve 11 for controlling discharge of water, for example, and is a closed type sprinkler that becomes a fire extinguishing head separately for each room. A head 18 (fire extinguishing head) is connected, and the end of the pipe 10 b is connected to a water supply tank of the toilet 14.

  The closed-type sprinkler head 18 has a head opening closed by a valve member held by a heat-sensitive mechanism. When the heat-sensitive mechanism reaches a predetermined temperature in response to a thermal air flow caused by a fire, the valve member is detached by thermal decomposition. Open the head opening and sprinkle the tap water.

  In the embodiment of the present invention for a fire extinguishing facility using such a water supply, a terminal test device 20 is provided at a pipe position serving as a terminal of the sprinkler head 18 connected to the fire extinguishing facility pipe 10b.

  The terminal test apparatus 20 includes a fixed unit 20a that is fixedly connected to the fire extinguishing equipment pipe 10b side, and a portable unit 20b that is detachable from the fixed unit 20a.

  The fixed unit 20a includes a test T-type joint 15a having the same stagnant water prevention structure as that used for attaching the sprinkler head 18 inserted and connected to the fire extinguishing equipment pipe 10b, and a branch port of the test T-type joint 15a. The end test valve 24 connected to the end test valve 24, and a one-touch joint 26 that detachably connects the mating member to the secondary side of the end test valve 24 by a one-touch operation.

  On the other hand, the portable unit 20b includes a one-touch connecting member 30 that is detachable from the one-touch joint 26 of the fixed unit 20a, a T-type joint (without stagnant water prevention structure) 28 that connects the one-touch connecting member 30 to the branch port, and a T-type joint. A pressure gauge 32 connected to one of the 28 inlet / outlet ports and a hose joint 36 incorporating an orifice 34 connected to the other of the inlet / outlet ports of the T-shaped joint 28.

The orifice 34 flows a flow rate corresponding to the case where one sprinkler head 18 is operated, so that the test can be performed in a state where water is discharged from the sprinkler head in a simulated manner. For example, there are two types of sprinkler heads 18 directly connected to the water supply used in this embodiment: flow rate constants K43 and K30. The respective discharge pressures at the discharge flow rate of 30 liters / minute of the sprinkler heads with flow rate constants K43 and K30 are:
K43 0.05 MPa
K30 0.10 MPa
It becomes.

  For this reason, an orifice 34 having a hole diameter for generating a water discharge pressure corresponding to the flow rate constant of the sprinkler head 18 is prepared and used when a water discharge amount of 30 liters / minute is flowed.

  The member on the fixed unit 20a side that constitutes the terminal test apparatus 20 uses a lead-free material in consideration of environmental and hygiene. In particular, lead-free materials are used from the first T-shaped joint 22 to the end test valve 24 that are always filled.

  2 is an explanatory view showing an embodiment of the T-shaped joint provided in FIG. 1. FIG. 2 (A) is a partially sectional front view, FIG. 2 (B) is a partially sectional side view, FIG. (C) has shown the bottom face seen from the branch side.

  In FIG. 2, the T-shaped joint 15 has an inflow port 50 formed on one side of a main body 48, an outflow port 52 formed on the opposite side, and a branch port 54 formed in an orthogonal direction. A partition wall 55 is formed in the internal flow path between the inflow port 50 and the outflow port 52 so as to extend to a position before the branch port 54, and the inflow port 50 and the outflow port 52 of the partition wall 55 are opposed to each other. The communication hole 56 is opened to constitute a stay prevention structure.

  A part of the tap water flowing in from the inflow port 50 of the T-shaped joint 15 flows into the outflow port 52 through the through hole 56 of the partition wall 55 as indicated by an arrow A, and at the same time, the tap water that flows in from the inflow port 50. As indicated by an arrow B, a part flows along the partition wall 55 so as to bypass the branch port 54 side and toward the outflow port 52. Tap water also flows through the internal flow path on the branch port 54 side, and the branch port 54 It prevents the stagnation of tap water on the side.

  When the sprinkler head 18 is attached as shown in FIG. 1 using the T-shaped joint 15 having such a structure for preventing stagnant water, the T when the water discharge amount is 30 liters / minute by operating the sprinkler head 18. The pressure loss ΔP generated in the mold joint 15 is, for example, ΔP = 0.02 MPa.

  On the other hand, the end test apparatus 20 performs a test equivalent to a flow rate of 30 liters / minute at a flow rate corresponding to the case where one sprinkler head 18 is operated via the T-shaped joint 15 during the water discharge test. In order to do so, it is necessary to generate a pressure loss ΔP. Therefore, in the present embodiment, the test T-type joint 15a for connecting the fixed unit 20a of the end test apparatus 20 to the fire extinguishing equipment pipe 10b is used for attaching the sprinkler head 18 and has the same structure as that shown in FIG. By using a mold joint, pressure loss ΔP = 0.02 MPa is generated.

  A flow rate equivalent to that when a water discharge amount of 30 liters / minute is passed through the sprinkler head 18 having a flow rate constant K43 can be achieved by matching the inner diameter of the orifice 34 provided in the portable unit 20b with the inner diameter of the sprinkler head 18.

  Next, the operation of the water discharge test will be described. The fire extinguishing equipment pipe 10b is fixedly connected to a test T-type joint 15a, a terminal test valve 24, and a one-touch joint 26, which are equipment on the fixed unit 20a side of the terminal test apparatus 10, and the portable unit 20b is removed. It is stored and managed by the inspection personnel.

  The portable unit 20b is not a unit dedicated to the fixed unit 20a provided in a specific fire extinguishing facility, but can be used as a common unit for a fire extinguishing facility of another system or another building in which the same fixed unit 20a is fixedly installed.

  Normally, the end test valve 24 on the fixed unit 20a side is closed, and tap water is supplied to the water supply tank for use of the toilet 14, and the test T-shaped joint 15 is provided even if the end test device 20 is provided. The stagnant water on the primary side of the terminal test valve 24 does not occur due to the stagnant water prevention structure.

  When performing a water discharge test, the separated portable unit 20b is connected to the fixed unit 20a. That is, the one-touch connecting member 30 of the portable unit 20b is inserted into the one-touch joint 26 of the fixing unit 20a to be connected and fixed. Further, a hose is connected to the hose joint 36 of the portable unit 20b and is drawn out to a drain pipe such as a veranda so that drainage is possible.

  When the end test valve 24 is opened in this state, tap water flowing from the test T-shaped joint 15a flows through the orifice 34 of the portable unit 20b to the hose connected to the hose joint 36, and the test T-shaped joint 15 is A pressure loss ΔP occurs due to the flow path resistance when passing, and when passing through the orifice 34, the same flow rate as the water discharged from the sprinkler head 18 is allowed to flow, so that the same water discharge as when the water is actually discharged from the sprinkler head 18. A test can be performed. At this time, a water discharge pressure corresponding to the flow rate is generated on the primary side of the orifice 34, and this is displayed on the pressure gauge 32 and measured as the water discharge pressure.

  In the case of the flow rate constant K43 of the sprinkler head 18, the display of the pressure gauge 32 can be determined to be appropriate if it is 0.05 MPa or more, and in the case of the flow rate constant K30, it can be determined to be appropriate if it is 0.10 MPa or more.

  When the water discharge test is completed, the end test valve 24 is closed to stop water discharge, the hose is removed from the hose joint 36, and then the portable unit 20b is removed from the fixed unit 20a.

  FIG. 3 is an explanatory view showing another embodiment of the fire extinguishing apparatus according to the present invention, in which a terminal test device is provided at a position different from that of the embodiment of FIG. 1 and is a fixed terminal test device.

  In FIG. 3, the end test apparatus 20 can be provided at an arbitrary position on the end side when viewed from the sprinkler head 18 attached by the T-shaped joint 15. The end test apparatus 20 of the present embodiment inserts and connects a test T-type joint 15a having a stagnant water prevention structure in the middle of the fire extinguishing equipment pipe 10b, and through the branch port, the gate valve 38, the end test valve 24, and The orifices 34 are sequentially connected, and a pressure gauge 32 is connected via a gate valve 42 from a branch port of a T-shaped joint (without stagnant water prevention structure) 40 provided on the primary side of the end test valve 34.

  In this embodiment, when the gate valve 38 is opened and then the end test valve 24 is opened, tap water flowing from the test T-shaped joint 15a passes through the orifice 34 from the gate valve 38 and the end test valve 24. A pressure loss ΔP is generated due to the flow resistance when passing through the test T-shaped joint 15a, and the sprinkler head 18 is allowed to flow at the same flow rate as that discharged from the sprinkler head 18 when passing through the orifice 34. The same water discharge test as when water is actually discharged is obtained. At this time, a water discharge pressure corresponding to the flow rate is generated on the primary side of the orifice 34, and this is displayed on the pressure gauge 32 and measured as the water discharge pressure.

  FIG. 4 shows another embodiment of the fire extinguishing equipment according to the present invention, and the same pressure loss ΔP as that when a sprinkler head mounted via a T-type joint equipped with a structure for preventing stagnant water is operated at the orifice at the time of test water discharge. It is made to generate.

  In FIG. 4, the end test apparatus 20 includes a T-shaped joint (without stagnant water prevention structure) provided on the primary side of the end test valve 24 by inserting and connecting the gate valve 38 and the end test valve 24 to the end of the fire extinguishing equipment pipe 10 b. ) A pressure gauge 32 is connected from 40 branch ports via a gate valve 42.

  A second orifice 34-2 and a first orifice 34-1 are connected in series on the secondary side of the terminal test valve 24. The second orifice 34-2 generates the same pressure loss ΔP = 0.02 MPa as that of the T-shaped joint 15 to which the sprinkler head 18 is attached, and the first orifice 34-1 has the same flow rate by having the same inner diameter as the sprinkler head 18. As a result, the water discharge test equivalent to the water discharge from the sprinkler head 18 via the T-shaped joint 15 can be achieved by combining the two.

  FIG. 5 is a cross-sectional view showing an embodiment of an orifice used in the embodiment of FIG. In FIG. 5A, the second orifice 34-2 and the first orifice 34-1 are connected by a joint 70. The second orifice 34-2 arranged on the upper side has an orifice plate 62-2 fitted and fixed inside a main body 60-2 having threaded portions at both ends, and the orifice plate 62-2 has an orifice hole 64-2. The hole diameter of the orifice hole 64-2 is set so that the pressure loss ΔP = 0.02 MPa generated in the T-type joint 15 used for mounting the sprinkler head 18 in FIG. 4 is generated. is doing.

  The first orifice 34-1 arranged on the lower side has an orifice plate 62-1 fitted and fixed inside a main body 60-1 having threaded portions at both ends, and the orifice plate 62-1 has an orifice hole 64-1. And the hole diameter of the orifice hole 64-1 is the same as the inner diameter of the sprinkler head 18 of FIG.

  FIG. 5B is another embodiment of the orifice used in FIG. 4, and is an integrated orifice in which the effects of the first orifice 34-1 and the second orifice 34-2 are collectively achieved by one hole diameter. 34-3.

  The integrated orifice 34-3 has an orifice plate 62-3 fitted and fixed inside a main body 60-3 having threaded portions at both ends, and an orifice hole 64-3 is formed in the orifice plate 62-3. In order to achieve the effects of the first orifice 34-1 and the second orifice 34-2 collectively by one hole diameter, the orifice diameter of the orifice hole 64-3 is the first orifice 34-1 and the second orifice. The hole diameter is smaller than 34-2. Or you may achieve by giving length, such as overlapping the orifice plates 62-2 and 62-1.

  By using such an integrated orifice 34, the configuration of the terminal test apparatus 20 shown in FIG. 4 can be simplified.

  In addition, about the terminal test apparatus comprised from the fixed unit 20a and the portable unit 20b of FIG. 1, the sprinkler head attached via the T-shaped joint provided with the stagnant water prevention structure act | operated similarly to the Example of FIG. When performing the same test water discharge as in the case, it may be generated only by the orifice. In this case, the test T-type joint 15a is a normal T-type joint without a stagnant water prevention structure, and the second orifice 34-2 and the first orifice 34-1 shown in FIG. That's fine.

  Moreover, said embodiment has taken as an example the case where the water supply piping 10 is divided into two systems, the general equipment piping 10a and the fire extinguishing equipment piping 10b, and the end of the fire extinguishing equipment piping 10b is connected to a toilet water tank as a general equipment. However, the general equipment and sprinkler head may be connected in the middle of the same pipe. In this case, the end test device is provided at the end of the pipe as viewed from the sprinkler head, What is necessary is just to set it as the structure which connects one or more equipment.

  Further, the attachment of the sprinkler head 18 is not limited to the T-shaped joint 18 and may be a multi-way joint including a multi-directional port such as a three-way joint. The multi-way joint may be composed of a plurality of branch pipes. Further, the connection positions of the pressure gauge 32, the one-touch connecting member 30 and the hose joint 36 connected to each port of the T-shaped joint 28 are not limited to the connections shown in FIG. The 30 connecting ports may be exchanged.

  Further, the terminal test apparatus is not limited to one that is separated into a fixed unit and a portable unit, but may be a terminal test apparatus that is always connected without a one-touch connection.

  Moreover, although said embodiment took the fire extinguishing equipment for houses as an example, this invention is not limited to this, It can apply also to the general fire extinguishing equipment installed in a building etc.

The present invention includes appropriate modifications without impairing the object and advantages thereof, and is not limited by the numerical values shown in the above embodiments.

10: Water supply piping 10a: General equipment piping 10b: Fire extinguishing equipment piping 15: T type joint (stagnation water prevention structure)
15a: T-shaped joint for test (stagnation water prevention structure)
18: Sprinkler head 20: Terminal test device 20a: Fixed unit 20b: Transportable unit 24: Terminal test valve 26: One-touch joint 30: One-touch connection member 32: Pressure gauge 34: Orifice 34-1: First orifice 34-2: Second orifice 34-3: Integrated orifice 36: Hose coupling

Claims (3)

In fire extinguishing equipment with a closed fire extinguishing head attached to piping through a multi-way joint with stagnant water prevention structure,
A terminal test device is provided at the position of the pipe on the terminal side of the fire extinguishing head,
The terminal test device is:
A multi-way joint for testing provided with a stagnant water prevention structure that is inserted and connected to the pipe and generates a pressure loss equivalent to the multi-way joint;
A terminal test valve connected to a branch port of the test multi-way joint;
An orifice that is arranged on the secondary side of the terminal test valve and that allows a flow rate equivalent to the operation of one fire extinguishing head;
With
A fire extinguishing system characterized by draining and testing from the orifice in a state in which a pressure loss generated in the test multi-way joint is generated when the terminal test valve is opened.
In fire extinguishing equipment with a closed fire extinguishing head attached to piping through a multi-way joint with stagnant water prevention structure,
A terminal test device is provided at the position of the pipe on the terminal side of the fire extinguishing head,
The terminal test device is:
A terminal test valve inserted and connected to the pipe;
A first orifice that is disposed on the secondary side of the terminal test valve and flows a flow rate equivalent to the operation of one fire extinguishing head;
A second orifice connected in series to the first orifice and generating a pressure loss equivalent to the multi-way joint;
With
A fire extinguishing system characterized by draining and testing through the first orifice in a state where a pressure loss is generated at the second orifice when the terminal test valve is opened.
In fire extinguishing equipment with a closed fire extinguishing head attached to piping through a multi-way joint with stagnant water prevention structure,
A terminal test device is provided at the position of the pipe on the terminal side of the fire extinguishing head,
The terminal test device is:
A terminal test valve inserted and connected to the pipe;
An orifice that is arranged on the secondary side of the end test valve and generates a pressure loss equivalent to that of the multi-way joint and flows a flow rate equivalent to the operation of one fire extinguishing head;
With
A fire extinguishing equipment, characterized in that when the end test valve is opened, a test is performed in a state where water is discharged through the orifice.

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