JP2002159584A - Pipe connecting joint - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a piping connecting joint capable of easily supplying a dry pre-operating facility without requiring the electrical construction requiring the complicated construction. SOLUTION: This piping connecting joint includes a three-way branch pipe 20, a valve casing 10 connected to the primary side of the three-way branch pipe, an adapter main body 30 connected to the secondary side of the three-way branch pipe, and a sensor head 40 connected to the secondary side of the adapter main body.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pipe connecting joint used for connecting a fire extinguishing sprinkler head.

[0002]

2. Description of the Related Art Sprinkler fire extinguishing systems include a dry type and a wet type. The dry-type sprinkler fire extinguishing system is filled with water up to the primary side (water source side) of the running water detector,
The secondary pipe to which the sprinkler head is attached is filled with compressed air. Generally, a dry-type sprinkler fire extinguishing system is a fire extinguishing system for preventing freezing, which is used in a cold region where the temperature in winter becomes severe. That is, in cold regions, if water is present in the pipes laid in the ceiling, it freezes in winter and expands, causing the pipes to burst or destroying the sprinkler head attached to the pipes.
Therefore, in cold climates, dry sprinkler fire extinguishing equipment that does not fill the secondary side with water is installed.

[0003] In a dry-type sprinkler fire extinguishing system, when a fire occurs, the valve element of the water flow detection device opens by opening the sprinkler head, water flows to the secondary side, and the water reaches the activated sprinkler head through piping, where it is operated. Sprinkled from.

[0004] The wet-type sprinkler fire extinguishing system cannot be used in cold regions because the primary and secondary sides of the running water detector are filled with water from normal times, and cannot be used in a cold area. There is a problem that the water filled therein flows out into the room, causing water damage.

[0005] In a general sprinkler fire extinguishing system, only a sprinkler head is mounted on the ceiling surface regardless of a dry type or a wet type, and water is always sprayed when the sprinkler head operates.
This sprinkler head breaks down the disassembled part incorporated in the sprinkler head due to the abnormally high temperature of the fire, and opens the valve body held in the disassembled part to spray water. At least external shock,
For example, when a person's luggage or the like that passes below hits the disassembled portion of the sprinkler head, the disassembled portion is destroyed and the valve body is opened, causing water to be sprinkled. Was.

[0006] When the sprinkler head causes water sprinkling, expensive equipment such as office equipment such as computers, facsimile machines and copiers, furniture and rugs placed indoors, and even important documents are wetted, causing severe water damage. turn into.

[0007] For this reason, recently, a pre-actuated sprinkler fire extinguishing system that prevents water from being sprinkled from the sprinkler head even when the sprinkler head operates due to accidental destruction or the like has come to be used. A pre-actuated sprinkler fire extinguishing system means that a fire sensor such as a heat sensor or a smoke sensor is installed near the mounting part of the sprinkler fire extinguishing system, and when both the sprinkler head and the fire sensor are activated, From which water is sprayed. Therefore, in the pre-operation type sprinkler fire extinguishing system, the pipe is not filled with water during normal times so that even if the sprinkler head is broken by an external impact, the water in the pipe does not flow out into the room and cause water damage. Sprinkler fire extinguishing equipment.

In a conventional pre-actuated sprinkler fire extinguishing system, when a fire occurs, a fire detector, which is more sensitive than the sprinkler head, detects the fire and sends an electric signal to the control panel, which sends a signal to the running water detector. And the secondary side is filled with water by opening the valve body of the flowing water detecting device. Thereafter, when the heat of the fire activates the sprinkler head, water is sprayed from the sprinkler head.

In other words, the pre-operation type sprinkler fire extinguishing system means that even if the sprinkler head is subjected to an external impact and the disassembled part is destroyed, the fire detector is not activated, and the signal from the fire detector detects the running water. It will not be sent to the device, and the valve of the flowing water detection device will not open. Conversely, only the fire detector operates, for example, a heat detector is installed near the outlet of the air conditioner in the room, and the heat sensor detects the heat of heating, or smokes cigarettes and fish in the room. If the smoke from the fire detector is full and the smoke detector detects the smoke, the sprinkler head will not operate even if the valve of the water flow detector is opened with the signal from the fire detector. Water will not be sprayed.

[0010] As described above, the pre-actuated sprinkler fire extinguishing system has an extreme advantage that water is not sprayed by only one of the operations, such as when the sprinkler head is operated by an external impact or when the fire detector detects non-fire heat or smoke. Safe measures have been taken.

[0011]

However, the dry pre-operation equipment requires complicated wiring of the sensor, and further requires equipment such as a pressurizing device in the secondary side piping and a valve opening device. And the equipment becomes very expensive. In addition, various problems occur when the sensor is malfunctioned due to the electrical wiring or when the sensor is not operated due to disconnection, power failure, or the like. In addition, it is uneconomical to introduce dry pre-operation equipment when areas where water loss due to unscheduled water spraying is not allowed and sections where ordinary wet equipment can be used are mixed. SUMMARY OF THE INVENTION An object of the present invention is to configure a pre-operation facility using ordinary wet equipment without using expensive and complicated facilities such as a pre-operation valve and a sensor.

[0012]

In order to construct a simple pre-operation facility, the inventor of the present invention provides a piping connection joint with a sensing function, and normally fills the sprinkler head connection side of the piping connection joint. The present invention has been completed by noting that it is sufficient to provide a pipe connection joint that fills the water guide hole of the sprinkler head when the sensing head is operated without water.

The present invention relates to a pipe connection joint used for a fire extinguisher sprinkler, comprising a three-way branch pipe, a valve box connected to one end of the three-way branch pipe, and an adapter body connected to the other end of the external connection part. A pipe connection joint having a closed-type sensing head connected to the other end of the adapter body, wherein the pipe connection joint presses the valve body by connecting the sensing head to a valve body that closes a valve box. A pipe connection joint including a supporting rod and a spring material for pressing and supporting the rod downward.

The provision of the sensing function in the pipe connection joint eliminates the need for a sensor. Further, with the above configuration, the pre-operation facility can be configured using a normal wet valve.

[0015]

DESCRIPTION OF THE PREFERRED EMBODIMENTS A valve body used in a pipe connection joint of the present invention is connected to a rod, and when a sensing head is operated, it is moved downward by a spring material and releases a blockage of a valve box. It is also possible that the valve box communicates with a connection portion other than the connection portion opposed by sitting on the provided valve seat.

By connecting the valve body and the rod, the valve body can be quickly pushed down by the action of the spring material which presses and supports the rod downward when the sensing head is operated. By pushing down the valve body, the valve body is pushed down. The primary side of the pipe connection joint is connected to the connection pipe of the sprinkler head, and the water guide hole of the sprinkler head can be filled.

[0017]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an exploded perspective view of a pipe connection joint according to the present invention. FIG. 1 is a front sectional view of a pipe connection joint of the present invention. The pipe connection joint of the present invention is a valve box 1
0, three-way branch pipe 20, adapter body 30, sensing head 4
0, a rod 70, a valve body 80, and a spring material 75.

The secondary side of the valve box 10 is connected to a secondary side pipe of a running water detecting device (not shown), and the branch side of the three-way branch pipe 20 is connected to a connection pipe 50 of a sprinkler head.
A sprinkler head 60 is connected to the end of the connection pipe 50 of the sprinkler head.

The secondary side of the valve box 10 is connected to a three-way branch pipe 20, and a connection port 15 in which a female screw 11 screwed into a secondary side pipe of the flowing water detecting device is provided. Head 4
A conducting port 14 for conducting water at the time of operation 0 is formed. Further, a tapered upper valve seat 13 for locking the valve body 80 is provided at a lower portion of the valve box 10, and a male screw screwed to a primary side of the three-way branch pipe 20 is provided on an outer periphery of a lower portion of the valve box. 12 is screwed.

The three-way branch pipe 20 may be a normal T-shaped pipe connection joint used in sprinkler piping equipment.

The adapter body 30 has a cylindrical shape.
The upper end is provided with a tapered lower valve seat 32 that locks the valve body 80 when the sensing head 40 operates. Furthermore, the upper rod 7 inside the adapter
A communication port 33 having a diameter larger than 1 and a stopper guide 34 which is an inner periphery of the adapter are bored, and a female screw 35 screwed to the sensing head 40 is provided at a lower end inside the adapter.

The valve body 80 is formed in a spherical shape with a metal such as steel, and its outer surface is covered with a sealing material such as a fluororesin. At the center, a female screw 81 for screwing the rod 70 is screwed.

The rod 70 is composed of an upper rod 71, a lower rod 72, and a stopper 73. The upper rod 71 has a cylindrical shape in which a male screw 77 is screwed on the outer peripheral upper part. 81 is screwed. The lower rod 72 has a cylindrical shape that is locked to the valve body of the sensing head 40, and the upper rod and the lower rod are screwed together with screws.

A thin annular stopper 73 having substantially the same diameter as the stopper guide 34 is provided between the upper rod 71 and the lower rod 72.

The stopper 73 is pressed and supported downward by a spring 75 sealed in the adapter body 30. The spring 75 and the stopper 73 have an effect of improving the operability by pressing the valve body 80 downward and guiding the rod 70 and the valve body 80 when the communication port 14 is opened.

The sensing head 40 usually has a higher sensitivity than the sprinkler head 40 connected to the branch pipe. The sensing head removes the deflector necessary for watering from a known sprinkler head, and a rod 70
And a valve body 42 for enclosing the heat-sensitive component, and a heat-sensitive decomposition unit that is publicly known in Japanese Patent Publication No. 58-36985 is used. When the sensing head 40 is actuated by the heat of a fire, all components other than the frame and the main body fall, and the rod 70 falls along with the fall, whereby the communication port 14 is opened.

The communication port 14 is closed by pressing and supporting the valve element 80 on the upper valve seat 13 by the rod 70 locked on the valve seat 42 provided in the communication port 41 of the sensing head.
It will be in the normal monitoring state.

Next, the state of the pipe connection joint of the present invention when the sensing head is operated will be described.

The sensing head has a higher sensitivity than the sprinkler head, for example, the time constant of the sprinkler head is 4
Assuming that the operating temperature is 0.degree. C. and the operating temperature is 72.degree.

The heat from the fire causes the low melting point alloy of the sensing head 40 to melt, and all components except the main body and frame of the sensing head fall. When the components of the sensing head 40 fall, the rod 7 pressing the valve body 80
0 is pushed down by the pressing force of the spring material 75, and the communication port 14 is opened. When the lower part of the valve element is seated on the lower valve seat 32, the drop of the valve element 80 stops, and the spring member 75
By closing the communication port 33 of the adapter body 30 by the pressing force of the fire extinguishing water and the pressure of the fire-extinguishing water, the fire-extinguishing water passes through the communication port 14 from the secondary pipe of the running water detection device (not shown) and branches into the three-way branch pipe 20. Through the mouth, it flows out to the branch pipe 50,
The water guide hole of the sprinkler head 60 is pressurized and filled. Thereafter, by operating the sprinkler head 60, the pressurized fire extinguishing water is sprayed from the sprinkler head 60 to perform a fire extinguishing activity.

Even if the sprinkler head 60 malfunctions due to an external impact, since the communication port remains closed, water does not leak from the sprinkler head.

As described above, the pipe connection joint of the present invention has a sensing function to the pipe connection joint,
The fire signal from the detector becomes unnecessary. In addition, with the above-described configuration, the pre-operation facility can be configured using a normal wet valve, and has an excellent feature that a simple, low-cost pre-operation facility can be constructed. It is a pipe connection joint.

[Brief description of the drawings]

FIG. 1 is a front sectional view of a sprinkler head of the present invention.

[Explanation of symbols]

 Reference Signs List 10 valve box 20 three-way branch pipe 30 adapter body 40 sensing head 50 connection piping 60 sprinkler head 70 rod 75 spring material 80 valve body

Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat II (reference) // F16K 27/00 F16K 27/00 C

Claims (2)

[Claims] 1. A pipe connection joint used for a fire extinguisher sprinkler, comprising: a three-way branch pipe; a valve box connected to one end of the three-way branch pipe; an adapter body connected to the other end of the external connection part; A pipe connection joint having a closed type sensing head connected to the other end of the adapter body. The pipe connection joint presses and supports the valve body by connecting a valve body for closing a valve box therein and the sensing head. A pipe connection joint including a rod and a spring material for downwardly supporting the rod. 2. The valve body is connected to a rod, and when the sensing head is actuated, the valve body is moved downward by a spring material and releases the blockage of the valve box. The piping connection joint according to claim 1, wherein the valve box communicates with a connection portion other than the connection portion that is opposed by sitting down.