JP6232255B2 - Water discharge fitting - Google Patents

Description

The present invention relates to a water discharge joint that includes a heat sensitive part and discharges water from a head connected separately by the operation of the heat sensitive part.

  Conventionally, when a head is installed in a portion where there is an obstacle such as a ceiling beam which hinders water spraying, a water discharge joint for connecting a head provided with a heat sensitive portion is used.

FIG. 5 shows an example of a conventional water discharge joint. As shown in FIG. 5, the water discharge joint 100 includes a primary-side water supply connection port 102, a secondary-side head connection port 103, and a heat-sensitive part connection port 104. In the water discharge joint 100, a valve portion 107, a partition wall 108, a valve port 109, and a valve body 110 are provided.

  A thermal head 112 that is decomposed by heat at the time of a fire is connected to the thermal sensor connection port 104, and supports the valve body 110 in a state where the valve port 109 is closed. In the event of a fire, when the thermal head 112 of the water discharge joint 100 is thermally decomposed and the valve body 110 is no longer supported, the valve body 109 is opened by the movement of the valve body 110 and fire-extinguishing water flows out from the secondary head connection port 103. Then, it discharges from a fire extinguishing head (not shown) connected to the pipe.

  However, in such a water discharge joint, the positions of the central axes of the thermal head 112 and the fire extinguishing head pipe-connected to the secondary head connection port 103 are different, and the thermal head 112 and the fire fighting head have different positions. When the protective radii are the same, piping for matching the center axis of the fire extinguishing head with the center axis of the thermal head 112 is required, and piping from the secondary head connection port 103 is complicated. May be difficult.

This problem can be solved by the structure of the water discharge joint shown in FIG. As shown in FIG. 6, if the water discharge joint 120 is installed with the heat-sensitive part connection port (heat-sensitive port) 126 facing the ceiling, the primary water supply connection port 124 faces the horizontal direction and the secondary-side head connection port. The (secondary port) 123 is configured to face the floor surface, and the position of the center axis of the fire-extinguishing head (not shown) connected to the secondary-side head connection port 123 and the thermal head 122 can be matched. it can.

  An angle-shaped valve portion 127 is provided in the water discharge joint 120. The angle-shaped valve portion 127 includes an angle-shaped valve body 130 and a locking portion 131, and supports the angle-shaped valve body 130 in a state where the valve port 128 is blocked by the thermal head 122 via the piston 132 and the locking portion 131. ing.

  In the event of a fire, if the angled valve body 130 is no longer supported due to thermal decomposition of the thermal head 122, the piston 132 is pushed up by the water supply pressure of the fire-extinguishing water and rotated around the shaft stopper 129, and the valve port 128 opens. The fire extinguishing water flows out from the secondary head connection port 123 and is discharged from the fire extinguishing head connected through the pipe. Further, the angle-shaped valve body 130 closes the heat-sensitive part connection port 126 side to prevent water from flowing out from the heat-sensitive head 122.

JP 2007-252522 A JP 2012-029764 A

  However, the conventional water discharge joint shown in FIG. 6 has a so-called butterfly valve structure in which the angled valve body 130 is pressed against the valve port 128 via the piston 132 and the locking portion 131 by the thermal head 122 and closed. In addition, since it has a cantilevered support structure in which the angle-shaped valve body 130 is rotatably supported by the shaft stop portion 129, after the installation work of the water discharge joint has been completed, the primary side pipe of the water discharge joint 120 is first subjected to pressurized fire extinguishing When water is rapidly charged, there is a problem that the angle-shaped valve body 130 receives a pressure increase due to the filling of fire-extinguishing water, and temporarily misfires fire-extinguishing water from the secondary-side head connection port 123.

In addition, the angle-shaped valve body 130 opened in the event of a fire closes the heat-sensitive part connection port 126 side to prevent the heat-sensitive head 122 from flowing out, but the angle-shaped valve body 130 rotates to the heat-sensitive part connection port 126 side. There is no valve seat structure that closes the flow path in response to the movement, and it is possible to suppress the outflow from the heat-sensitive part connection port 126 side, but it is difficult to close, and the fire-dissipating water is unnecessarily removed from the thermally decomposed thermal head 122. There is a problem that leaks.

The present invention provides a water discharge joint that reliably prevents accidental water discharge by preventing the valve body from opening even when pressurized water for fire extinguishing is rapidly filled, and also reliably prevents outflow from the thermal head side when activated by a fire. The purpose is to provide.

The present invention relates to a water discharge joint,
Pressurized圧消fire water is the primary ports that will be supplied, provided with a secondary port and thermographic port watering head is connected, the common axis line passing the heat-sensitive ports and secondary ports are arranged in a substantially perpendicular direction Rutotomoni 1 axial centerline of the next port is disposed substantially perpendicular to the common axial line, and the fitting body of the valve hole is formed on a common axis coaxial with the partition wall partitions the primary port and secondary port,
A thermal decomposition part that is attached to the thermal port, closes the thermal port , decomposes when receiving a hot air current, and opens the thermal port;
Is movably arranged on a common axis coaxial with, and disuccinimidyl member valve body portion for opening and closing the valve hole is formed at one end,
Equipped with a,
In a state where the heat sensitive port is closed, the disc member is biased in the direction to open the valve hole by the pressure of the water for pressurizing and extinguishing acting on the valve body, but the other end of the disc member contacts the heat sensitive decomposition portion. The movement of the valve is restricted and the valve hole is kept closed.
When the thermal decomposition part receives thermal airflow and decomposes and the thermal port is opened , the valve member opens the valve hole and communicates between the primary port and the secondary port by the movement of the disk member. In addition, the valve body portion has a structure in which the valve body portion comes into contact with and stops at the closed portion of the heat sensitive port.

  According to the present invention, the disk member has a simple structure in which a valve body part is formed at one end and the other end is closed by abutting against a closed part of the thermal decomposition part connected to the thermal port, Can be reliably prevented from being accidentally discharged from the secondary port side.

  In addition, when the thermal decomposition part is decomposed in response to a thermal airflow due to a fire and the thermal port is opened, the disc body opens the valve hole by the movement of the disc member, and the primary port and the secondary port are opened. In addition to communicating between the ports, the valve body is closed by contacting the closed portion of the heat sensitive port, so that it is possible to reliably prevent unnecessary fire fighting water from flowing out of the heat sensitive port opened by thermal decomposition.

  Further, in the joint body, when the heat sensitive port is arranged upward, the secondary port is arranged downward, and the primary port is located in the lateral direction orthogonal to the secondary port, and the water discharge head is connected to the secondary port via a pipe. , The thermal decomposition part connected to the thermal port and the center position of the water discharge head connected to the secondary port via the piping match the horizontal position, and simply connecting the water discharge head with a straight line, When the protective radii of the thermal decomposition section and the water discharge head are the same, it is possible to easily match the protective sections of the two.

In addition, the range in which the response performance of the heat sensitive part in the closed sprinkler head can be obtained (heat sensitive range) and the range in which the protective performance of the head can be obtained (watering range) are dependent on each other. By deviating, it is possible to prevent a reduction in the number of protective compartments including both.

Sectional drawing which showed embodiment of a water discharge joint Explanatory drawing which showed the water discharge operation of FIG. Sectional drawing which showed other embodiment of the water discharge joint Sectional drawing which showed other embodiment of the water discharge joint Sectional view showing a conventional water discharge joint Sectional drawing which showed the conventional water discharge joint which arrange | positioned the heat sensitive port and the secondary port coaxially

[First embodiment of the water discharge joint]
(Configuration of water discharge joint)
FIG. 1 is a sectional view showing a first embodiment of a water discharge joint according to the present invention. As shown in FIG. 1, the joint body 12 of the water discharge joint 10 forms a primary port 14 on the left side, and the secondary port is coaxially downward with the common axis B that is orthogonal to the axis A of the primary port 14. 16 and a heat-sensitive port 18 are formed upward to form a horizontal T-shaped joint. The secondary port 16 and the thermal port 18 are separated from the primary port 14 by a partition wall 22, and the thermal port 18 and the secondary port 16 are directly communicated by an internal flow path 15.

  The primary port 14 is connected to a water supply pipe 11 from a fire pump system so as to be supplied with pressurized fire water. A head 20, which is a watering head, is connected to the secondary port 16 via a head pipe 21. The head 20 may be an open type or a closed type. Further, a thermal decomposition portion 28 is screwed and fixed to the thermal port 18.

  The thermal decomposition unit 28 includes an assembly structure of a body 30, a frame 32, a slider 34, a ball 36, a balancer 38, a thermal plate 40, a heat insulating material 42, a fuse (low temperature melting solder) 44, and a piston 46, and generates a thermal air current due to a fire. When the fuse 44 is melted, the fixed maintenance due to the assembly load is released, and the slider 34, the ball 36, the balancer 38, the heat sensitive plate 40, the heat insulating material 42, the fuse 44 and the piston 46 are disassembled and scattered and dropped, and the heat sensitive port. 18 is opened.

  A partition wall 22 is formed inside the joint body 12 to partition the primary port 14 and the secondary port 16, and a valve hole is formed at a position above the partition wall 22 through which the common axis B passing through the thermal port 18 and the secondary port 16 passes. 24 is formed.

A disk member 48 is slidably incorporated in the axial direction into the valve hole 24 and the through hole 30a of the body 30 on the heat sensitive port 18 side arranged coaxially therewith. The disc member 48 is formed with a valve body portion 50 at one lower end, the seat 26 is disposed on the lower side thereof, and the seat 26 is brought into contact with a step portion of the valve hole 24 to close the valve hole 24. Further, a fitting receiving portion 52 is formed at the upper end of the disc member 48, the lower side of the piston 46 is fitted through the through hole 30a of the body 30, and the valve body portion 50 receives the pressing force due to the assembly load. The hole 24 is kept closed.

  Here, the secondary port 16 and the thermal port 18 are formed in the joint body 12 so as to be coaxially arranged so that the center coincides with the common axis B, and for this reason, the thermal decomposition part 28 attached to the thermal port 18 is formed. When the protection range (range of a predetermined radius centered on the thermal decomposition unit 28) and the protection range of the head 20 connected to the secondary port 16 via the head pipe 21 (range of a predetermined radius centered on the head 20) are the same With a simple piping configuration in which the head 20 is connected by the linear head piping 21, the protection ranges of both can be made to coincide.

(Operation for rapid water filling)
Next, the operation when the pressurized fire-extinguishing water is rapidly filled in the embodiment of FIG. 1 will be described. When the installation work of the water discharge joint 10 shown in FIG. 1 is completed, the fire-extinguishing pump equipment is activated to supply pressurized fire-fighting water to the piping. At this time, the water discharge water for the water discharge joint 10 according to the present embodiment is rapidly charged. Even so, there will be no accidental water discharge from the open head.

In FIG. 1, when pressurized fire-extinguishing water is rapidly charged from the water supply pipe 11 to the primary port 14 of the water discharge joint 10, the fire-extinguishing water pressurizes the lower end surface of the disk member 48 and is subjected to pressurization by rapid filling. The disc member 48 is pushed upward.

  However, the movement of the fitting receiving portion 52 at the tip of the disc member 48 is restricted by contact with the piston 46 of the thermal decomposition portion 28 that closes the thermal port 18, and the disc member 48 is rapidly filled with fire-extinguishing water. Does not move, the valve hole 24 is not opened and is kept closed.

  For this reason, even if the water for pressure extinguishing is rapidly filled in the water discharge joint 10 of the present embodiment, the valve is not opened, and erroneous water discharge from the head 20 connected to the head pipe 21 of the secondary port 16. Can be reliably prevented.

(Water discharge action by fire)
FIG. 2 is an explanatory view showing the operation of the thermal decomposition unit that receives the hot air current from the fire in the state of FIG. As shown in FIG. 2, when a thermal airflow due to a fire is received by the thermal decomposition unit 28 in a normal monitoring state, the fuse 44 is melted and assembly maintenance by the piston 46 is released, and the slider 34, the ball 36, the balancer 38, the thermal sensor, and the like. The plate 40, the heat insulating material 42, the fuse 44, and the piston 46 are disassembled and scattered and dropped, and the thermal port 18 is opened.

  When the heat sensitive port 18 is opened, the disc member 48 receives the pressurized water on the primary port 14 side and moves upward, thereby opening the valve hole 24 and opening the valve hole 24 from the primary port 14. And the water for fire extinguishing is made to flow into the secondary port 16 through the internal flow path 15, and the water is discharged from the head 20 connected by the head pipe 21.

In addition, the disc member 48 that has been moved by receiving the force of the water for pressurized fire extinguishing from the primary side is below the through hole 30a formed in the body 30 in which the upper end of the valve body portion 50 is screwed and fixed to the thermal port 18. Closes in contact with the opening to prevent leakage of fire-fighting water from the thermal port 18.

[Second embodiment of water discharge joint]
FIG. 3 is a cross-sectional view showing a second embodiment of the water discharge joint according to the present invention. In this embodiment, the force applied to the disc member by rapid water filling is not directly applied to the thermal decomposition section. It is characterized by that.

As shown in FIG. 3, the joint body 12 of the water discharge joint 10 forms a primary port 14 on the left side, and the secondary port coaxially with the common axis B that is orthogonal to the axis A of the primary port 14. 16 and a heat sensitive port 18 are formed upward, and the heat sensitive port 18 and the secondary port 16 are in direct communication with each other through the internal flow path 15.

  A water supply pipe 11 from the fire pump system is connected to the primary port 14, and a head 20 that is a watering head is connected to the secondary port 16 via a head pipe 21.

  The thermal decomposition unit 28 includes a plunger 56 in addition to the body 30, the frame 32, the slider 34, the ball 36, the balancer 38, the thermal plate 40, the heat insulating material 42, the fuse (low temperature molten solder) 44, and the piston 46 shown in FIG. When the fuse 44 melts in response to a thermal air current due to a fire, the fixed maintenance due to the assembly load is released, and the slider 34, the ball 36, the balancer 38, the thermal plate 40, the heat insulating material 42, and the fuse 44 are released. The piston 46 and the plunger 56 are disassembled and scattered and dropped, and the thermal port 18 is opened.

  A partition wall 22 is formed inside the joint body 12 to partition the primary port 14 and the secondary port 16, and a valve hole is formed at a position above the partition wall 22 through which the common axis B passing through the thermal port 18 and the secondary port 16 passes. 24 is formed.

  A disk member 48 is slidably incorporated in the axial direction into the valve hole 24 and the through hole 30a of the body 30 on the heat sensitive port 18 side arranged coaxially therewith.

The disc member 48 has a valve body portion 50 formed at one lower end, and the valve body portion 50 has a stepped shape in which a small diameter portion is formed subsequent to a large diameter portion, and an O-ring 58 is attached to the small diameter portion. It is inserted into the hole 24 and closed.

  Further, a contact portion 50 a is formed at the upper end of the disk member 48, and the tip is positioned relative to the plunger 56 through an O-ring 60 provided in the through hole 30 a of the body 30.

  A coiled spring 62 is incorporated between the valve body 50 of the disk member 48 and the body 30 to hold the disk member 48 at the initial position shown in the figure.

The disk member 48 is in a closed state in which the O-ring 58 of the valve body 50 is located in the valve hole 24 at the initial position by the spring 62 and the primary port 14 and the secondary port 16 are separated. The amount of movement of the disc member 48 required to open the valve by communicating the primary port 14 and the secondary port 16 is the lift amount from the center of the O-ring 58 to the opening of the valve hole 24 on the secondary port 16 side. L1. That is, when the disk member 48 moves upward by the lift amount L1 from the illustrated initial position, the valve hole 24 is opened, and the valve is in an open state in which the primary port 14 and the secondary port 16 are communicated.

  On the other hand, the contact portion 50a which is the tip of the disk member 48 is opposed to the plunger 56 of the thermal decomposition unit 28 with a predetermined gap at the initial position shown in the figure, and the contact unit 50a is a plunger of the thermal decomposition unit 28. In order to come into contact with 56, it is necessary to move upward by the lift amount L2 that is the distance between them.

In the present embodiment, the lift amount L1 required to open the valve body 50 of the disc member 48 and the lift amount L2 required for the contact portion 50a to contact the plunger 56 of the thermal decomposition unit 28. For, the lift amount L2 is made smaller than the lift amount L1, that is, L1> L2.
It is set to become.

For this reason, even if the disc member 48 moves upon receiving the rapid filling of pressurized fire-extinguishing water from the water supply pipe 11, the amount of lift in which the contact portion 50 a is in contact with the plunger 56 of the thermal decomposition portion 28 and the movement is restricted. Since it only moves by L2 and does not exceed the lift amount L1 required to open the valve body 50, the valve body 50 does not open even if the disc member 48 moves upward. Therefore, even if the water for pressure and fire extinguishing is rapidly filled in the water discharge joint 10 of this embodiment, the valve is not opened, and water is erroneously discharged from the head 20 connected to the secondary port 16 by the head pipe 21. Can be surely prevented.

Further, when the quick water filling to the primary side of the water discharge joint 10 is completed, the pressure applied to the lower end surface of the disc member 48 is stabilized, and accordingly, the disc member 48 is pushed back to the initial position side by the spring 62, Even if the contact part 50a leaves | separates from the plunger 56, or even if it does not leave | separate, the pressing force with respect to the plunger 56 will fall.

  For this reason, since the disk member 48 is not always pressed in the opening direction, there is no adverse effect such as destroying the thermal decomposition portion 28.

  On the other hand, when the thermal decomposition portion 28 is decomposed and opened by receiving a hot air current, the disc member 48 moves outward through the opening portion of the opened thermal port 18, and the valve body portion 50 is lifted accordingly. By moving downward beyond L1, the valve hole 24 can be opened, and the primary port 14 and the secondary port 16 can be communicated with each other.

  Even if the disc member 48 moves upward, the seal by the O-ring 60 provided in the through hole 30a of the body 30 is maintained, and leakage of fire-extinguishing water from the thermal port 18 is prevented.

[Third embodiment of water discharge joint]
FIG. 4 is a cross-sectional view showing a third embodiment of the water discharge joint according to the present invention. The present embodiment is characterized in that a glass bulb is used in the thermal decomposition section.

  As shown in FIG. 4, the joint body 12 of the water discharge joint 10 includes a primary port 14, a secondary port 16, and a thermal port 18, and a water supply pipe 11 is connected to the primary port 14, and the secondary port 16 is connected to the water supply pipe 11. A head 20 that is a watering head is connected via a head pipe 21, and this is the same as the embodiment of FIG. 1.

The thermal decomposition portion 28 has a glass bulb 64 disposed inside the support frame 63 , and the glass bulb 64 supports one end by the fitting receiving portion 52 at the tip of the disk member 48 located on the thermal port 18 side, and the other side on the opposite side. The end is supported by screwing an impress screw 66 into the support frame 63 .

  The glass valve 64 is filled with a thermal expansion solution such as alcohol. When the glass bulb 64 receives a hot air flow and rises to a predetermined temperature, the glass bulb 64 is destroyed by thermal expansion, the holding of the disk member 48 is released, and the thermal port 18 is opened. And

  Other structures and operations are the same as those of the embodiment of FIG.

[Modification of the present invention]
In the embodiment of FIGS. 1 and 4, the distal end side of the disk member 48 passes through the through hole 30 a of the body 30 provided in the thermal decomposition portion 28, but in the through hole 30 a, FIG. Similar to the embodiment, by arranging and sealing the O-ring 60, it is possible to reliably prevent the water for fire extinguishing from the thermal port 18 due to the opening of the valve member 50 from leaking out.

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 discharge joint 12: Joint body 14: Primary port 15: Internal flow path 16: Secondary port 20: Head 21: Head pipe 22: Partition wall 24: Valve hole 28: Thermal decomposition portion 48: Disc member 50: Valve body Part

Claims (1)

Pressurized圧消fire water is the primary ports that will be supplied, provided with a secondary port and thermographic port watering head is connected, the common axial line through said thermosensitive port and the secondary port Ru is disposed substantially vertically the axial center line of the primary port is disposed substantially perpendicular to the common axial line, a valve hole is formed in the common axis coaxial with the partition wall which partitions said primary port and the secondary port with Coupling body,
A thermal decomposition part that is attached to the thermal port and closes the thermal port , decomposes when receiving a hot air current, and opens the thermal port;
The common axis line and is movably arranged coaxially, and disuccinimidyl member valve body portion for opening and closing the valve hole at one end is formed,
Equipped with a,
In the state where the heat sensitive port is closed, the disc member is biased in the direction of opening the valve hole by the pressure of the pressurized fire-extinguishing water acting on the valve body portion, but the other end of the disc member Is in contact with the thermal decomposition part and is restricted from moving to maintain the closed state of the valve hole,
When the heat-sensitive decomposition section the thermosensitive port to decompose receiving hot air flow is opened, the by the movement of disuccinimidyl member, the valve body portion is the said primary port by opening the valve hole secondary while communication between the ports, the water discharge fitting said valve body portion is characterized by having a structure to stop in contact with the closing portion of the thermosensitive port.

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