JP2012105853A - Tunnel water spray equipment and strainer device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a strainer device which enables installation in a position near a water spray head in a little space, and also reduces pressure drop.SOLUTION: A water spray head 20 is arranged at a tip of head pipings 14 and 18 brought down by an L shape from a water spray piping 10 in a tunnel, and pressurized water is sprayed on a water-discharge space in a tunnel from the water spray head 20 in case of fire. A strainer device 16 is prepared at an L shape connection part of the head pipings 14 and 18. The strainer device 16 forms a first end connection 24 used as an input at an upper part of a strainer body 22, forms a second end connection 26 used as an outlet at a lateral direction, and further, forms a filtering object outlet 28 at a lower part which faces the input, wherein a filtering object 30 using a cylinder screen is contained from the filtering object outlet 28 to the strainer body 22 to be freely taken out or put in, and a lid member 32 is prepared at the filtering object outlet 28 of the strainer body 22 to be freely attached or detached.

Description

The present invention relates to a tunnel water spray facility and a strainer device that supply pressurized water to a water spray nozzle installed in a tunnel to discharge the water.

  2. Description of the Related Art Conventionally, emergency facilities have been installed in tunnels for exclusive use of automobiles and the like in order to protect people and vehicles from fire accidents that occur in the tunnel. As such emergency facilities, fire detectors and emergency telephones are installed for fire monitoring and reporting, and pressurized water is discharged from fire hydrant devices and water spray heads for tunnel protection to extinguish fires and prevent fire spread. A water spray facility is provided.

  In the water spray facility, for example, one automatic valve device is installed in each water discharge section at intervals of 50 meters. As shown in FIG. 7, the water spray facility is started up from the automatic valve device and is arranged along the upper wall surface of the tunnel. A water spray head 110 is connected to the tip of the head pipe to which the lowered pipe 104, elbow joint 106 and pipe 108 are connected.

  When a fire detector detects that a fire has occurred in the tunnel, a fire signal is sent from the fire detector to the control device, the pump is activated, and the pressurized water stored in the water tank is pumped through the water supply pipe. Then, an automatic valve device installed in the fire occurrence section is operated to supply pressurized water to a plurality of water spray heads to discharge water all at once.

  By the way, in outdoor equipment such as tunnels, rainwater is stored and used for spraying water, or water is drawn from nearby rivers and used, so a lot of debris is generated in the pressurized water discharged from the spray head near the pump. Conventionally, a strainer device is provided near the head of the water supply pipe to remove foreign matters such as dust in the pressurized water. Also, a strainer device provided on a water spray head is known.

By providing the strainer device in this way, dust and the like contained in the pressurized water can be removed, and the spray holes of the water spray head can be prevented from being clogged.

Japanese Patent Application Laid-Open No. 11-299920 JP 2001-079106 A

  However, there are the following problems in the equipment provided with the strainer device in such a conventional pipe and the equipment provided with the strainer device in the water spray head.

  When a strainer device is provided in a pipe for a water spray head, for example, a Y-type strainer device is installed at a pipe position close to the water spray head, but the Y-type strainer device has a filter body storage unit that collects foreign matters such as dust. Since it is a structure that protrudes outward and protrudes from the installation position of the pipe along the tunnel wall surface, it is necessary to secure a new installation space in the tunnel with limited installation space.

  In addition, when the strainer device is provided in the water spray head, the strainer device needs to be downsized because the pipe connection diameter of the water spray head is small, and a filter body using a cylindrical screen or the like with the downsizing of the strainer device. Therefore, there is a problem in that the pressure loss increases and the water spray performance decreases.

  Further, when the strainer device is provided in the water spray head, a structure for housing the strainer device in the water spray head is required, and the structure becomes complicated. Furthermore, when cleaning with the strainer device removed, some of the dust adhering to the strainer device remains inside the water spray head, and the dust is not completely removed, which may adversely affect the water discharge of the water spray head. .

SUMMARY OF THE INVENTION An object of the present invention is to provide a tunnel water spray facility and a strainer device that allow a strainer device to be installed at a position close to a water spray head in a small space and have a small pressure loss.

(Water spray equipment)
The present invention relates to a tunnel water spray facility in which a water spray head is disposed at a tip of a head pipe branched from a water spray pipe in a tunnel, and pressurized water is discharged from the water spray head to a discharge target space in the tunnel in the event of a fire. ,
A strainer device in which a filter body that can be freely taken in and out is provided in a bent portion of the head pipe.

Here, the strainer device is
A strainer body that forms an inlet at the top, forms an outlet in the lateral direction, and further forms a filter outlet at the bottom opposite the inlet;
A filter body that can be freely inserted into and removed from the filter body outlet with respect to the strainer body;
A lid member that holds one end of the filter body and is detachably provided at the filter body outlet of the strainer body,
Is provided.

  The lid member may be provided with a dust storage part for storing the dust removed by the filter body.

In addition, the strainer device forms an inlet at the top, forms an outlet in the lateral direction, and forms a filter body outlet at a lateral position opposite to the outlet,
A filter body that can be freely inserted into and removed from the filter body outlet with respect to the strainer body;
A first lid member that houses one end of the filter body and is detachably provided at the filter body outlet of the strainer body;
Is provided.

In addition, the strainer device
Further, the strainer body includes a drain port at a lower portion facing the inlet, and a second lid member detachably provided at the drain port.

  In addition, a holder groove for fitting and holding the filter body tip is formed inside the strainer body where the tip of the filter body is located.

(Strainer device)
The present invention provides a strainer device disposed at a bent portion of a pipe.
An inflow port, and a strainer body in which an outflow port is formed in a direction bent from the inflow direction of the inflow port, and a filter outlet is formed at a position opposite to the inflow port,
A filter body that can be freely inserted into and removed from the filter body outlet with respect to the strainer body;
A lid member detachably provided at the filter outlet of the strainer body,
It is provided with.

  In addition, the lid member is provided with a dust storage part for storing the dust removed by the filter body.

Further, the present invention provides a strainer device disposed at a bent portion of a pipe.
An inflow port, a strainer body in which an outflow port is formed in a direction bent from the inflow direction of the inflow port, and a filter body outlet is formed in a position opposite to the outflow port;
A filter body that can be freely inserted into and removed from the filter body outlet with respect to the strainer body;
A first lid member detachably provided at the filter outlet,
Is provided.

  Further, the strainer body further includes a drain port at a position opposite to the inflow port, and a second lid member detachably provided at the drain port.

A holder groove for fitting and holding the filter body tip is formed inside the strainer body where the tip of the filter body is located.

  According to the tunnel water spray facility of the present invention, since the strainer device is formed at the bent portion of the pipe, it is possible to reduce the size and make it unnecessary to secure a new installation space.

  In addition, by placing the strainer device in the middle of the head piping having a sufficiently large diameter with respect to the connection diameter of the water spray head, the size of the filter body accommodated in the strainer device can be appropriately secured and close to the water spray head. Even if it is installed, pressure loss is small, foreign matter such as dust mixed in the pressurized water can be removed, and sufficient water spray performance can be ensured without causing watering trouble.

  In addition, since the strainer device is independent of the water spray head, dust does not adhere to the water spray head, and the strainer device can be easily attached and removed and cleaned.

  Further, in the strainer device of the present invention, it is possible to provide a strainer device that could conventionally be provided only in the straight pipe portion at a piping position where a conventional elbow joint is provided. Can produce coverage.

Moreover, the opening part of a filter body can be ensured for a long term by having added the dust storage part to the lower part of a strainer apparatus.

Explanatory drawing which showed embodiment of the tunnel water spraying equipment by this invention Explanatory drawing which took out and showed the strainer apparatus of FIG. Explanatory drawing which showed the disassembled state of the strainer apparatus about FIG. Explanatory drawing which showed other embodiment of the strainer apparatus. Explanatory drawing which showed other embodiment of the water spraying equipment by this invention installed so that the filter body of a strainer apparatus might turn sideways. Explanatory drawing which showed the disassembled state of the strainer apparatus about FIG. Explanatory drawing showing conventional tunnel water spray equipment

  FIG. 1 is an explanatory view showing an embodiment of a tunnel water spray facility according to the present invention. In FIG. 1, a T-type joint 12 is connected to a water spray pipe 10 piped along a tunnel wall surface in order to arrange water spray heads 20 at intervals of 5 meters, for example, and downward from a branch port of the T-type joint 12. The head pipe 14 is connected to the head pipe 18, the head pipe 18 is connected laterally via the strainer device 16 according to the present invention, and the water spray head 20 is connected to the tip of the head pipe 18. The water spray head has one or more water discharge holes, and discharges pressurized water toward the roadway inside the tunnel in the event of a fire.

  FIG. 2 shows the strainer device of FIG. 1 taken out. FIG. 2 (A) shows a cross section, and FIG. 2 (B) shows an assembled and disassembled state. In FIG. 2, the strainer device 16 has an L-shaped strainer body 22, and a first connection port 24 (inlet) that is an inlet of pressurized water and is connected to the head pipe 14 is formed on the upper portion of the strainer body 22. A second connection port 26 (outflow port) connected to the head pipe 18 as an outlet to the water spray head side is formed in the lateral direction, and a filter outlet 28 is formed in the lower part opposite to the first connection port 24. is doing.

  Inside the strainer body 22, a filter body 30 made of a cylindrical screen made of, for example, stainless steel whose upper and lower end surfaces are opened is inserted and stored from below. The filter body 30 is inserted from the filter body outlet 28 of the strainer body 22 in a state of being fitted in the holder hole 38 of the lid member 32 that closes the filter body outlet 28, and the tip of the filter body 30 is inserted into the strainer body 22. It is fitted to the formed stepped holder portion 36 so that the cylindrical shape can be held against the passage of pressurized water. The lid member 32 is integrally formed with a hexagonal head 40 on the outside, and is used when attaching to and detaching from the strainer body 22 with a tool.

  Referring again to FIG. 1, the first connection port 24 of the strainer device 16 is connected to the tip end of the head pipe 14 that is lowered from the water spray pipe 10, and the second connection port 26 located in the lateral direction of the strainer device 16. Is connected to one end of the head pipe 18. The filter outlet 28 of the strainer device 16 is located at the lower end and is closed by a lid member 32.

  Here, the strainer device 16 has a size slightly larger than the elbow joint 106 provided in the head pipe of the conventional equipment shown in FIG. 6, and the installation of the strainer device 16 provides a new installation space on the tunnel wall surface side. It is not necessary to secure, and it can be installed with the same space as the conventional head piping.

  In addition, since the strainer device 16 is provided at the L-shaped connecting portion of the head pipe separated from the water spray head 20, watering obstruction due to pressure loss becomes a problem when the strainer device is built in the water spray head 20 in a small size. Therefore, foreign matters such as dust mixed in the pressurized water can be removed without causing a problem of pressure loss, and the nozzle hole of the water spray head 20 can be prevented from being clogged.

  In addition, since the strainer device 16 is separated from the water spray head, when the filter body 30 is cleaned or replaced, the dust remaining on the filter body 30 is prevented from being left in the water spray head body, and the nozzle hole is clogged. Can be prevented.

  Further, the strainer device 16 flows pressurized water from the upper part of the filter body 30 and flows it out through the side screen, and foreign matters such as dust mixed in the pressurized water remain attached inside the filter body 30.

  FIG. 3 shows an exploded state for inspecting and cleaning the strainer device of FIG. At the time of inspection and cleaning, a tool is set on the hexagonal head 40 of the lid member 32, and the lid member 32 is removed by turning in the direction of loosening the screws. When the lid member 32 is removed at this time, the filter body 30 fitted in the holder hole 38 of the lid member 32 can be taken out integrally. Further, foreign matters such as dust removed by the filter body 30 remain in the filter body 32 taken out integrally with the lid member 28, and do not remain on the strainer body 22 side. If it removes from 32 and it cleans, it can be said that the strainer main body 22 side cleaning is unnecessary.

  Further, since the lid member 32 is provided at the lower end portion of the strainer device 16 disposed at the L-shaped connection portion of the head pipes 14 and 18, the attaching and detaching work can be relatively easily performed. Moreover, since the dust etc. which remain | survived in the filter body 30 are collected on the downward side in the filter body 30 by gravity, and the filter body 30 was taken as the structure removed from the downward direction which is a gravity direction, by removing the filter body 30 below, Dust and the like can be reliably removed from the strainer body 22.

  In addition, as a structure of the filter body 30, for example, in a cylindrical box shape in which the lower surface of the filter body 30 is closed, the filter member 30 and the cover member 32 are separated by removing the lid member 32, or during water discharge in the event of a fire. It is good also as a structure which refuse does not leak from the body 30 lower end.

  The filter body 30 does not necessarily have a cylindrical shape, and may be a cylindrical shape that can remove dust in pressurized water passing through a pipe. The structure of the water spray head is not limited. The material of the filter body 30 is not particularly limited, and the screen structure may be formed by knitting a string or opening a plurality of holes in a flat plate. Moreover, the filter body 30 needs to be strong enough to maintain a cylindrical shape even when water pressure or dust collides, and a reinforcing member may be inserted into the filter body as necessary.

  FIG. 4 is an explanatory view showing another embodiment of the lid member 32 for holding the filter body 30 of the strainer device.

  In FIG. 4, the strainer device 16 according to the present embodiment has a dust storage part that dents the bottom surface of the lid member 32 provided at the filter body outlet 28 at the lower part of the strainer body 22 and collects the dust filtered by the filter body 30. 41 is provided. The filter body 30 is open at the upper and lower end surfaces, and has a mesh-like side surface. The pressurized water that has flowed from the first connection port 24 at the time of a fire is removed from the filter 30 and dust flows from the second connection port 26 to the water spray head 20.

  The dust removed by the filter body 30 adheres to the inside of the side surface of the filter body 30 or accumulates in the dust storage portion 41 of the lid member 32 by gravity. Therefore, the area of the opening hole on the side surface of the filter body 30 can be maintained longer as the dust storage space of the dust storage portion 41 is increased, and it is possible to prevent adverse effects on the water discharge performance at the time of fire.

  FIG. 5 is an explanatory view showing another embodiment of the water spray facility according to the present invention in which the strainer filter body is installed so as to face sideways, and FIG. 6 shows an exploded state.

  5 and 6, the strainer device 16 of the present embodiment has an L-shaped strainer main body 22, an inflow port (first connection port) 24 is formed in the upper portion of the straight main body 22, and the outflow port is formed in the lateral direction. A (second connection port) 26 is formed, a filter outlet 28 is formed at a lateral position facing the outlet 26, and a drain port 42 is formed at a lower portion facing the inlet 24.

  A filter body 30 made of, for example, a stainless steel screen is accommodated in the strainer body 22. The filter body 30 is inserted from the filter body outlet 28 provided on the side of the strainer body 22 in a state of being fitted in the holder hole 38a of the first lid member 32a, and the tip of the filter body 30 is formed inside the strainer body 22. It is fitted in the holder groove 36a so that the cylindrical shape can be held against the passage of pressurized water. A second lid member 44 is detachably provided in the drain hole 42. The holder groove 36a may be formed by the holder step portion 36 of FIG.

  The first lid member 32a and the second lid member 44 are integrally formed with hexagonal heads 40a and 46 on the outside, and are used when attaching to and detaching from the strainer body 22 with a tool. Further, seals 34 and 48 are provided on the opening surfaces of the filter outlet 28 and the drain port 42 which are closed by the first lid member 32 a and the second lid member 44.

  The inlet 24 of the strainer main body 22 is connected to the tip of the head pipe 14, and one end of the head pipe 18 is connected to the outlet 26 arranged in the lateral direction of the strainer main body 22.

  Due to the arrangement of the strainer device 16 with respect to the head pipes 14 and 18, the filter body 30 is accommodated horizontally in the strainer body 22, and the pressurized water flowing from the head pipe 14 flows from the outside of the screen of the filter body 30 to the inside. After flowing in, it flows out to the head pipe 18. For this reason, foreign matters such as dust mixed in the pressurized water remain attached to the outside of the screen of the filter 30.

  In addition, by forming a recess in the upper surface of the second lid member 44 and providing the dust reservoir 47, the dust removed by the filter body 30 drops by gravity, and the dust reservoir of the second lid member 44 By accumulating in 47, the amount of dust continuously adhering to the filter body 30 is reduced, the opening area of the screen is secured longer, and the water discharge performance is not adversely affected.

  Further, if the configuration is such that the entire circumference of the side surface of the filter body 30 and the inner surface of the strainer body 22 are separated, the dust flowing in from the inlet 24 is stored in the dust storage portion 47 through the space around the side surface of the filter body 30. Thus, it is possible to prevent the inner diameter of the pipe from being reduced due to dust clogging of the filter body 30 and accumulation of dust around the filter body.

  When inspecting and cleaning the strainer device, as shown in FIG. 6, set the tool on the hexagonal head 40a of the first lid member 32a located beside the strainer body 22 and turn it in the direction to loosen the screws. Remove. At this time, since the filter body 30 is fitted in the holder hole 38 of the lid member 32, it can be taken out integrally with the lid member 32, and the filter body 30 is removed from the lid member 32 and cleaned.

  Since foreign matter such as dust removed by the filter body 30 remains at the bottom of the strainer body 22 from which the filter body 30 has been taken out, the second lid member 44 is removed and the dust deposited and adhered inside. The foreign matter is removed by cleaning, and the inside of the strainer body 22 is also cleaned.

  In addition, although the strainer apparatus of said embodiment has taken the case where it uses for the head piping of water spraying equipment as an example, it is not limited to water spraying equipment, It can apply to appropriate piping equipment.

  Further, in the above embodiment, the head pipe 14 is configured to be lowered from the water spray pipe 10 downward. However, the present invention is not limited to this, and the water spray pipe 10 is connected to the water spray head 20 via the strainer device 16. What is necessary is just to provide the strainer apparatus 16 with the structure which can attach or detach the filter body 30 by the structure connected to this.

  The dust reservoir may be formed on the strainer body 22 near the lid member without being formed on the lid member.

  The strainer body 22 is not limited to a perfect L-shape, but may be bent so that the water flow direction is changed and the filter body is passed along the way, so that the filter body can reliably remove dust and the filter body can be inserted and removed. Any configuration may be used.

  The holder step portion 36 in FIG. 2 may be the holder groove 36a in FIG.

The present invention includes appropriate modifications that do not impair the objects and advantages thereof, and is not limited by the numerical values shown in the above embodiments.

10: Water spray piping 14, 18: Head piping 16: Strainer device 20: Water spray head 22: Strainer body 24: Inlet 26: Outlet 28: Filter outlet 30: Filter 32: Lid member 32a: First Lid member 34: Seal 36: Holder groove 38, 38a: Holder hole 40, 40a, 48: Hexagonal head 42: Drain port 41, 47: Dust pool 44: Second lid member

Claims (11)

In a tunnel water spray facility in which a water spray head is arranged at the tip of a head pipe branched from a water spray pipe in a tunnel, and pressurized water is discharged from the water spray head to a water discharge target space in the tunnel in the event of a fire,
A tunnel water spraying facility characterized in that a strainer device that houses a filter body that can be taken in and out is provided in a bent portion of the head pipe.
The tunnel water spray facility according to claim 1, wherein the strainer device includes:
A strainer body that forms an inlet at the top, forms an outlet at the lateral direction, and further forms a filter outlet at the bottom opposite the inlet;
A filter body housed in a freely removable manner from the filter body outlet with respect to the strainer body,
A lid member that holds one end of the filter body and is detachably provided at the filter body outlet of the strainer body,
A tunnel water spray facility characterized by comprising:
3. The tunnel water spray facility according to claim 2, wherein a dust reservoir for storing the dust removed by the filter body is provided on the lid member.
The tunnel water spray facility according to claim 1, wherein the strainer device includes:
A strainer body which forms an inlet in the upper part, forms an outlet in the lateral direction, and forms a filter outlet in a lateral position opposite to the outlet;
A filter body housed in a freely removable manner from the filter body outlet with respect to the strainer body,
A first lid member that houses one end of the filter body and is detachably provided at the filter body outlet of the strainer body;
A tunnel water spray facility characterized by comprising:
The tunnel water spray facility according to claim 4, wherein the strainer device comprises:
A drain port at a lower portion of the strainer body opposite to the inlet; a second lid member detachably provided at the drain port;
A tunnel water spray facility characterized by comprising:
In the tunnel water spray facility according to claim 2 or 4,
The strainer device is a tunnel water spray facility characterized in that a holder groove for fitting and holding the tip of the filter body is formed inside the strainer body where the tip of the filter body is located.
In the strainer device arranged at the bent part of the pipe,
An inflow port, and a strainer body in which an outflow port is formed in a direction bent from the inflow direction of the inflow port, and a filter outlet is formed in a position opposite to the inflow port,
A filter body housed in a freely removable manner from the filter body outlet with respect to the strainer body,
A lid member detachably provided at the filter body outlet of the strainer body;
A strainer device comprising:
8. The strainer device according to claim 7, wherein a dust storage part for storing the dust removed by the filter body is provided on the lid member.
In the strainer device arranged at the bent part of the pipe,
An inflow port, a strainer body in which an outflow port is formed in a direction bent from the inflow direction of the inflow port, and a filter outlet is formed at a position opposite to the outflow port;
A filter body housed in a freely removable manner from the filter body outlet with respect to the strainer body,
A first lid member detachably provided at the filter outlet,
A strainer device comprising:
The strainer device according to claim 8, wherein the strainer body further includes a drain port at a position opposite to the inlet, and a second lid member detachably provided at the drain port;
A strainer device comprising:
  The strainer device according to claim 7 or 9, wherein a holder groove for fitting and holding the filter body tip is formed in the strainer main body where the tip of the filter body is located.

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