JP2019010255A - Construction method of fire-fighting equipment, fire-fighting equipment, and piping unit for fire-fighting equipment - Google Patents

Abstract

To provide a construction method of fire-fighting equipment in which a hydraulic test after completion of piping work takes only one time, and it can easily be responded without causing problems even if an installation position of a storage box is changed to a longitudinal direction, a vertical direction or left and right directions, and also the piping work by the thread connection is eliminated and the piping work can be simplified.SOLUTION: A construction method of fire-fighting equipment comprises: a step of connecting a joint part 11 provided in the other end of a flexible pipe 9 with a fireplug valve 6 in one end to a branch connection 8 provided in a water supply pipe 7 being laid inside of a building wall; and a step of inserting the fireplug valve 6 into a fireplug valve insertion hole 1a formed in a back box 1A of a fireplug storage box 1 and capable of inserting the fireplug valve 6, and fixing it to the back box 1A.SELECTED DRAWING: Figure 4

Description

  The present invention includes, for example, indoor fire hydrant equipment (No. 1 fire hydrant) which is a fire extinguishing equipment installed in a building such as a hotel, department store, office building, commercial building, condominium, hospital, school, theater, inn, factory, warehouse, or station. , Easy-to-operate No. 1 fire hydrant, No. 2 fire hydrant, wide-area type No. 2 fire hydrant) and construction method of fire extinguishing equipment used for auxiliary sprinklers of sprinkler equipment, fire extinguishing equipment, and piping unit for fire extinguishing equipment.

  In general, large buildings such as hotels, department stores, and office buildings are obliged to install indoor fire hydrant equipment and sprinkler equipment.

  The indoor fire hydrant equipment includes a fire hydrant storage box installed on the wall of a building, a fire hydrant No. 1 comprising a hose, a nozzle, a fire hydrant valve, etc. Fire hydrants are known (see, for example, Patent Document 1, Patent Document 2, Patent Document 3, and Patent Document 4).

  In addition, as the sprinkler equipment, a water pipe piped behind the ceiling of the building and a plurality of sprinkler heads installed on the ceiling are connected by a sprinkler pipe, and an auxiliary water sprinkler (inside the containment box is installed in a portion that cannot be covered by the sprinkler head). A device in which a nozzle, a hose, a fire hydrant valve and the like are installed is known (see, for example, Patent Document 5 and Patent Document 6).

By the way, the installation work of the fire hydrant storage box of the indoor fire hydrant equipment and the piping work to the fire hydrant storage box have different construction methods depending on the situation at the site, and there are various construction procedures. The construction procedure shown in the following (1) to (8) shows an example of installation work and piping work of the fire hydrant storage box of the indoor fire hydrant equipment.
(1) Perform vertical piping (water supply pipe). At this time, a branch joint (cheese pipe) for branch connection of the horizontal pipe (water supply pipe) is attached to the vertical pipe.
(2) Install the horizontal pipe as close as possible to the fire hydrant storage box (the back or side of the fire hydrant storage box), attach an elbow or socket to the end of the horizontal pipe and close it with a screw-in plug. If the fire hydrant containment box is close to the vertical pipe, do not install a horizontal pipe, and attach a screw plug to the branch joint of the vertical pipe.
(3) Fill the vertical pipe and the horizontal pipe with water, apply a predetermined pressure, and perform a water pressure test to check for leaks from the threaded part of the pipe.
(4) Install the back box (fuselage) of the fire hydrant storage box.
(5) After draining the water in the vertical pipe and the horizontal pipe and removing the screw plug at the end of the pipe, adjust the alignment of the fire hydrant storage box and the hydrant valve, and adjust the pipe end located in the back box. Install a fire hydrant valve.
(6) To check for water leakage at the hydrant valve connection, after closing the hydrant valve, fill the vertical and horizontal pipes with water and repeat the water pressure test.
(7) Finish the wall on which the back box has been installed (attaching the base board, applying a cloth, painting, etc.).
(8) Attach a door frame with a hydrant door to the back box.

In addition, the installation method of the fire hydrant storage box of the auxiliary sprinkler faucet of the sprinkler facility and the piping work to the fire hydrant storage box differ depending on the situation at the site, and there are various construction procedures. The construction procedure shown in the following (1) to (8) shows an example of installation work and piping work of the fire hydrant storage box of the auxiliary water sprinkler.
(1) Attach a branch joint (cheese pipe) to a pipe (water supply pipe) to which a sprinkler head is attached via an automatic alarm valve.
(2) Install the pipe from the branch joint to the vicinity of the fire hydrant storage box (the back or side of the storage box), attach an elbow or socket to the end of the pipe, and close it with a screwed plug.
(3) Fill the pipe with water, apply a predetermined pressure, and perform a water pressure test to confirm that there is no water leakage from the screwed part of the pipe.
(4) Install the back box (fuselage) of the fire hydrant storage box.
(5) After draining the water from the pipe and removing the screw plug at the end of the pipe, adjust the alignment of the fire hydrant storage box and the hydrant valve, and attach a fire hydrant valve to the pipe end located in the back box.
(6) In order to check for water leakage at the hydrant valve connection, close the hydrant valve, fill the pipe with water, and perform the water pressure test again.
(7) Finish the wall on which the back box has been installed (attaching the base board, applying a cloth, painting, etc.).
(8) Attach a door frame with a hydrant door to the back box.

However, in the construction of the above-mentioned indoor fire hydrant equipment and sprinkler equipment, since the fire hydrant valve can be installed only after the fire hydrant storage box is installed, the water pressure test is divided into two times before and after the installation of the fire hydrant storage box. Must be done,
There is a problem that it takes time and effort.

  Because the fire hydrant valve installed in the containment box is screwed and fixed to the end of the pipe that has been inserted into the pipe through-hole previously opened in the back box of the containment box. If not, piping from the branch part such as vertical piping to the fire hydrant valve cannot be made, and water leakage cannot be confirmed.

  If only piping work is considered, it is only necessary to perform a water pressure test after attaching a fire hydrant valve to the end of the pipe. However, since there are other processes at the construction site, other processes are actually required. Since it depends on (especially the attachment of the base board), at least two water pressure tests have been performed.

  In the water pressure test, the pipe is filled with water, the end of the pipe is closed, a predetermined water pressure is applied to the pipe, and the pipe is left for a certain period of time. And after a fixed time passes, if the pressure in the piping has not dropped, it is determined that there is no water leakage.

  Therefore, in order to install the fire hydrant valve, the water in the pipe filled in the first water pressure test must be drained. However, when the drainage path is not completed, a hose is used from the bottom of the pipe. It must be discharged to waterways and manholes on the site.

  In addition, since the drainage in the pipe is discharged due to natural fall, it takes a considerable amount of time depending on the size of the building, and it is also necessary to arrange an operator to monitor the hose for breakage or disconnection along the way. .

  Furthermore, depending on the progress of the construction, the work of installing the back box or attaching the fire hydrant valve to the end of the pipe located in the back box and the work of attaching the base board may be performed simultaneously. Even if it is discovered, if a base board is attached to the location, the work space cannot be secured, and the attached base board must be removed, which requires extra cost and time. Therefore, the water pressure test needs to confirm the presence or absence of water leakage in the pipes hidden by the base board before the base board is affixed. First, the water pressure test is performed once after completion of the piping work near the fire hydrant storage box, After that, in many cases, it is necessary to carry out at least two water pressure tests in order to check for water leakage at the connecting part of the fire hydrant valve when the fire hydrant valve is attached to the end of the pipe after the base board has been pasted. There is.

In this way, the work process of indoor fire hydrant equipment and sprinkler equipment at the construction site does not have a fixed flow, it is very fluid depending on the judgment and progress of the installer, and always changes to other processes. Each work process must be determined carefully.
If other construction progresses without waiting for the completion of work, it will not be possible to respond to the change in the number of workers and the change in layout due to other construction changes, and there will be a cost burden associated with rework and repair work, Construction costs will increase significantly.

  In addition, in the construction of the above-mentioned indoor fire hydrant equipment and sprinkler equipment, it is necessary to change the position of installing the fire hydrant storage box back and forth by moving the wall finish position back and forth from the initial finish position. The position of the hydrant valve to be installed in the box is also greatly affected, and there is a problem that it is necessary to perform another work and is expensive and time consuming.

  Normally, by aligning the front edge of the fire hydrant storage box with the finished position of the wall, the door frame fits in the specified position, so it is assumed that the fire hydrant storage box will be placed in the specified finish position of the wall, and the piping is placed in the back box. Work up to the position of the pipe through hole. At this time, a joint (elbow or socket) is often attached to the pipe end of the pipe, but a short pipe having a thread formed on the outer peripheral surface of the end is sometimes screwed in.

  However, at the construction site, the finish position of the wall is frequently changed, so that the contents greatly affect the installation of the fire hydrant valve in the fire hydrant storage box.

For example, in the cases shown in the following (A) to (D), the installation of the fire hydrant valve in the fire hydrant storage box is greatly affected.
(A) When the back box is not attached yet and the wall finish position is ahead of the plan.
(I) When the back box is already installed and the wall finish position is ahead of the plan.
(C) When the back box has not been installed yet and the wall finish position is behind the plan.
(D) When the back box is already installed and the wall finish position is later than planned.

  FIG. 10 shows an example of an indoor fire hydrant facility, (A) is a front view of a state in which a fire hydrant valve 31, a hose 32, a nozzle 33, etc. are accommodated in a back box 30A of the fire hydrant storage box 30, and (B) is a fire hydrant storage box. FIG. 3 is a partially omitted enlarged cross-sectional view showing a basic attachment form to a wall of 30. The left half of the drawing shows a state where the fire hydrant storage box 30 is attached to the LGS wall 43, and the right half of the drawing is a fire hydrant. A state in which the storage box 30 is attached to the concrete wall 44 is shown.

  In FIG. 10, 30A is a back box of the fire hydrant storage box 30, 30B is a door frame of the fire hydrant storage box 30, 30C is a fire hydrant door of the fire hydrant storage box 30, 34 is a top plate (partition plate), 35 is a guide roller 36. 37, handle, 38, door rotation shaft, 39, mounting screw, 40, nut, 41, pipe through hole, 42, a short pipe for protrusion with an external thread formed on the outer peripheral surface of the end, 43 Is an LGS wall, 44 is a concrete wall, 45 is wood, 46 is a base board, and 47 is a wall finishing material.

  In the fire hydrant storage box 30 shown in FIG. 10, the attachment of the back box 30A and the door frame 30B is performed by inserting a plurality of mounting screws 39 into the back box 30A and the door frame 30B and The position is adjusted.

However, if the wall finish position is as shown in (a) above when installing the fire hydrant storage box 30, the front edge of the fire hydrant storage box 30 should be installed in accordance with the changed wall finish position. However, depending on the changed dimensions, the end of the short tube 42 that protrudes in advance may be behind the back box 30A, and the fire hydrant valve 31 is attached. (See FIG. 11B).
Moreover, even if the protruding male screw of the short pipe 42 remains in the back box 30A, the fire hydrant valve 31 can be removed as long as the required screw length does not protrude from the back plate of the back box 30A to some extent. Cannot be performed (see FIG. 11C).
To solve these problems, the protruding short tube 42 must be replaced, which is expensive and time consuming.

  Further, when the wall finish position is as described in (a) above, since the space between the back box 30A and the door frame 30B is wide, it can be dealt with by using a long mounting screw 39. When the changed dimension is large, a gap may be generated between the back box 30A and the door frame 30B (see FIG. 12). At this time, since the position of the end portion of the short pipe 42 is determined in accordance with the position of the fire hydrant storage box 30 with respect to the piping, no problem occurs.

  As a countermeasure, it is necessary to change the design of the door frame 30B, or attach another part to hide the gap, which is expensive and time consuming.

  Furthermore, when the finished position of the wall is as described in (c) above, there is no particular problem with the installation of the fire hydrant storage box 30 as in (a) above. Since the end of the protruding short pipe 42 in the box 30A is in front of the original position, the frontmost part (handle part) of the fire hydrant valve 31 interferes when the door frame 30B is attached depending on the changed dimensions. (See FIGS. 13A to 13C).

As a countermeasure, it is necessary to replace the short tube 42 for ejection, which is expensive and time consuming.
Moreover, even if it is a case where only a coupling is attached without protruding piping, depending on the changed dimension, the joint end and the back box 30A interfere with each other, and a large replacement work is required.

  When the wall finish position is as described in (d) above, the front edge of the back box 30A protrudes forward from the wall finish surface, and depending on the dimensions to be changed, the door frame 30B is attached. May not be possible (see FIG. 14). Moreover, about piping, since the position of the edge part of the short pipe 42 is determined according to the position of the fire hydrant storage box 30 similarly to said (I), a problem does not arise.

  As a countermeasure, it is only necessary to change the design of the door frame 30B. However, there may be a design problem. When the design is placed in a place where the design is important, the back box 30 is replaced. Alternatively, a very large work is required such as removing the front edge of the back box 30 protruding from the finished surface.

  Thus, changing the finishing position of the wall in the front-rear direction has a great influence on the fire hydrant storage box 30 and piping, and causes various problems. In addition, the response method is not uniform and varies depending on the situation at the site. In addition, it may be necessary to have a meeting with other works, and the time spent on this will be a heavy burden.

  As a result, the installation work of the fire hydrant storage box 30 is often performed after the determination of the wall finish position, and the piping work and the installation work of the back box 30A are avoided from being performed simultaneously.

  Furthermore, in the construction of the indoor fire hydrant equipment and the sprinkler equipment described above, the installation position of the fire hydrant storage box 30 may be changed depending on the specifications of the wall finishing material. There is a problem that the position of the pipe through hole 41 formed in the back box 30A is shifted vertically and horizontally.

  For example, when installing a fire hydrant storage box 30 on a wall finished with panels or tiles, if the width and height of the panel or tile that touches the left and right ends of the fire hydrant storage box 30 cannot be used with the standard dimensions, the fire hydrant storage box is stored. It is cut and pasted at a position in contact with the door frame 30B of the box 30. At this time, the left and right dimensions of the panels and tiles are made the same so as not to break the visual balance (this is called joint alignment).

  Moreover, the fire hydrant storage box 30 is not installed according to the floor surface, a parting board called a baseboard is attached to the wall surface of the lower end part where the floor surface and the wall surface are in contact, and the fire hydrant storage box 30 is attached to the upper end part thereof. It is often installed so that the lower end of the door frame 30B is in contact.

  However, wall finishing materials such as tiles may be changed during the construction, and not only the installation of the fire hydrant storage box 30 but also the piping work is affected.

  In the case of panels and tiles, the allocation (determining the mounting position of the tiles or the like accurately according to the dimensions) is performed in consideration of the entire wall, and the dimensions of the fire hydrant storage box 30 to be installed are not considered. . Normally, after the tile allocation is determined, the installation position of the fire hydrant storage box 30 is determined so that both ends of the fire hydrant storage box 30 are evenly arranged with respect to the tiles. Is called.

  Therefore, piping work is not performed before the determination of panel and tile allocation, and there is no deviation between the end position of the piping and the mounting position of the fire hydrant valve 31 of the fire hydrant storage box 30, but it is changed after the determination. If this happens, there will naturally be a deviation.

  Moreover, when the size of the baseboard (parting board) is changed, the end position of the pipe and the mounting position of the fire hydrant valve 31 in the back box 30A regardless of before and after the back box 30A of the fire hydrant storage box 30 is installed. There will be a gap. In addition, although the piping through hole 41 formed in the back box 30A is formed larger than the outer diameter of the piping, it is necessary to replace the piping when the deviation is large.

  Countermeasures associated with changes in the specifications of the wall finish vary depending on the situation at the site. For example, (a) when the space between the back box 30A and the joint at the pipe end is sufficiently wide, (b) the back box When the space between the joint at 30A and the pipe end is narrow, the following measures are taken.

  That is, in the case of (a) described above, the piping is exchanged by using a piping method (called elbow turning) in which the eccentricity is adjusted by a plurality of elbow joints 48 and nipples 49 (FIGS. 15A to 15D). reference). However, in this case, although there is a piping space, when the back box 30A of the fire hydrant storage box 30 has already been installed and the work cannot be performed, the back box 30A is temporarily removed and then the piping is exchanged. It is necessary to perform installation and is troublesome.

  Further, in the case of (b) described above, if the pipe method called elbow return cannot be used, depending on the size of the shift of the fire hydrant storage box 30, the pipe through hole 41 of the back box 30A can be increased. be able to. However, in this case, there are the following restrictions. When attaching the fire hydrant valve 31 to the end of the pipe, the handle and the base must be in a position where they can be screwed without interfering with the side plate or the top plate 34 (partition plate) of the back box 30A. Even if the position where the fire hydrant valve 31 is attached is in the opposite direction to the above, it may interfere with an instrument stored in the back box 30A (for example, the hose storage instrument 35, etc.). There is a need to do.

  In addition, since the operation | work which enlarges the piping through-hole 41 of 30 A of back boxes is performed on-site, the tool to be used has restrictions. Naturally, firearms such as gas burners cannot be used, but the back box 30A is painted, so if sparks scatter, the painted surface will be soiled, and it will be necessary to take curing measures. Repair coating is necessary to prevent the occurrence of rust due to peeling. Moreover, unless the iron powder scattered in the back box 30A is completely removed, rust is generated.

  Further, when the above-described method cannot be used, the height of the piping is adjusted by detouring up and down, or the piping is replaced.

As described above, when the installation position of the fire hydrant storage box 30 is changed in the vertical direction in accordance with the change of the wall finishing specification, the following problems (a) to (d) occur.
(A) Replacement of piping is necessary to eliminate the displacement between the piping through hole 41 of the back box 30A and piping.
(B) The piping work is performed in a limited space, and since the starting point (branch point) and the target position (the piping through hole 41 of the back box 30A) are determined, skilled workers are required.
(C) The work of remodeling the back box 30A on site will require additional repair work if the surrounding curing and clean-up are not performed properly, which will further increase costs and time.
(D) Depending on the situation, pipes may be exchanged retroactively to the branching point of the pipes, and the impact may affect the entire construction process.

  In addition, in the construction of the above-mentioned indoor fire hydrant equipment and sprinkler equipment, there is a problem in the piping work even if there is no change in the finish position of the wall or the specification of the wall finish. This is because in fire extinguishing equipment, the standard of the screw used for connecting the pipe is determined, and a taper screw for the pipe is used for the screw.

  In general, in fire extinguishing equipment, it is obliged to use steel pipes except for some underground buried parts according to laws and regulations, and screw connection is used for pipe connection methods. This screw is exclusively used for piping called a pipe taper screw. The male screw is formed in a tapered shape, and the female screw is formed in a tapered shape that narrows toward the back. Of course, threaded portions such as the joint and the fire hydrant valve 31 are also formed as a pipe taper screw.

  Since the pipe taper screw has a male screw and a female screw formed in a taper shape, the screw theoretically stops at the position of the reference diameter. However, if the screw is further screwed in, the screw thread bites in and is in close contact with the whole. Here, the reference diameter is a diameter serving as a reference for determining a diameter dimension in the taper screw, and the position of the reference diameter is a position on a plane perpendicular to the axis for determining the reference diameter in the taper screw. is there.

  Furthermore, in order to improve the sealing performance, the taper screw for pipe is wrapped with a seal tape (a tape made of Teflon (registered trademark)) or a liquid seal material is applied to the screw portion.

  As described above, when the pipe, the joint, the fire hydrant valve 31 and the like are connected by the pipe taper screw, a water-stopping effect is obtained by the close contact of the screw, but the pipe taper screw must be tightened until the screw stops. .

  Therefore, the outer diameter dimension of the threaded portion of the piping and the size and direction of screwing change depending on the operator's force, which causes a problem in the piping work.

  Normally, the piping of fire extinguishing equipment at construction sites is performed in the order of (i) cutting of pipe members, (ii) threading work, (iii) sealing work, (iv) screwing work, (v) rust prevention treatment. Has been done.

  In the pipe member cutting operation, the pipe material is cut to a predetermined length. However, if the screwing allowance is not taken into consideration at this time, the dimensions will be different from those assumed at the time of connection. Since the drawing used at the time of construction is drawn based on the core of the pipe, the screwing allowance of the joint must be taken into consideration (see FIG. 16).

  Also, in thread cutting work, there are cases where thread cutting is performed at the work site, and there are cases where short pipes that have been measured and cut in advance based on drawings are prepared, but there are many same piping routes as in apartments. Except when it is done at the work site. A special tool is used for this threading, so it is possible to machine to a certain extent to some extent, but the male screw thread allowance is adjusted according to the female thread of the joint etc. used, making the work easier To be done.

  However, depending on how the screw is cut, the joint may not reach the assumed position or may go too far, causing a deviation from the piping through hole 41 of the back box 30A.

  Furthermore, since the screwing allowance can be adjusted by the number of windings of the sealing tape in the sealing work, the operator determines the number of windings of the sealing tape while taking into account the tolerance of the screws used, adjusting the tightening force, and the screw stop position. Although it is adjusted, it requires the experience and skill of the operator.

  Furthermore, in screwing work, it is screwed to some extent by hand and then tightened using a tool such as a pipe wrench. In the case of a joint, screwing is stopped slightly before the target angle, and the target angle is adjusted after the next pipe is closed by hand. Furthermore, in the case of the fire hydrant valve 31, the angle is adjusted by screwing into the end of the pipe so that the discharge port faces a predetermined direction.

  However, when adjusting the angle of the fire hydrant valve 31, etc., it must never be turned in the direction of loosening the screw. This is because once a screw that has been tightened is loosened, a gap is formed between the compressed seal tape or sealant and the screw, causing water leakage. When adjusting the angle of the fire hydrant valve 31 etc., if it exceeds the target angle, it must be rotated one more time, but if the remaining margin of the screw is small or depending on the number of windings of the seal tape, it will rotate to a predetermined angle It may not be possible to In such a case, it is necessary to remove the fire hydrant valve 31 and the like from the screw, remove the sealing tape and the sealing material, and perform the screwing operation again, which is very troublesome.

  In the rust prevention treatment, after the screwing operation is completed, a rust preventive paint is applied to the screw portion to prevent corrosion. However, if the seal tape protruding from the screw portion is not removed, the screw portion is protected. Rust paint does not adhere, causing rust. Also, paint must be applied to scratches on joints and pipes that are gripped with tools.

  As described above, in piping work using taper screws for pipes, various problems and factors to be noted occur, and the finished dimensions and water stoppage are affected by the experience and skill of the worker. Difficult to ensure uniform quality.

Japanese Utility Model Publication No. 02-037172 Japanese Utility Model Laid-Open No. 03-0785666 Japanese Utility Model Publication No. 06-039028 JP 2006-223447 A Japanese Patent Application Laid-Open No. 06-105928 JP 2007-014373 A

  The present invention has been made in view of such problems. The purpose of the present invention is to perform only one water pressure test after the completion of the piping work, and the installation position of the storage box is the front-rear direction, the up-down direction, or the left-right direction. The fire extinguishing equipment construction method and fire extinguishing equipment can be easily handled without causing problems even if the direction is changed, and the piping work by screw connection is no longer necessary and the piping work can be simplified. And providing a piping unit for fire extinguishing equipment.

  In order to achieve the above object, a fire extinguishing equipment construction method according to claim 1 of the present invention is such that a joint portion provided at the other end of a flexible tube having a fire hydrant valve at one end is piped inside a building wall. A step of connecting to a branch joint provided in the water supply pipe, and through the fire hydrant valve insertion hole formed in the back box of the fire hydrant storage box through which the fire hydrant valve can be inserted, and into the back box And a fixing step.

  The fire extinguishing equipment construction method according to claim 2 of the present invention is the fire extinguishing equipment construction method according to claim 1, wherein the joint portion provided at the other end of the flexible tube having the fire hydrant valve at one end. After the step of connecting to the branch joint provided in the water supply pipe piped inside the building wall, the step of not performing the water draining operation in the pipe after performing a water pressure test of the pipe once And is characterized by including.

  The fire extinguishing equipment construction method according to claim 3 of the present invention is the fire extinguishing equipment construction method according to claim 1 or 2, wherein the flexible pipe is fixed in the vicinity of the fire hydrant valve. And inserting the fire hydrant valve into the fire hydrant valve insertion hole having a smaller opening area than the attachment plate, and fixing the attachment plate to the back box.

  A fire extinguishing equipment construction method according to claim 4 of the present invention is characterized in that in the fire extinguishing equipment construction method according to claim 3, the mounting plate and the back box are fixed by screws.

  The fire extinguishing equipment construction method according to claim 5 of the present invention is the fire extinguishing equipment construction method according to any one of claims 1 to 4, wherein the fire hydrant valve is sandwiched between both sides connected to the fire hydrant valve. The method further includes a step of fixing a pair of cover plates covering the insertion hole from the inside of the fire hydrant storage box to the back box.

  The fire extinguishing equipment according to claim 6 of the present invention includes a flexible pipe, a fire hydrant valve provided at one end of the flexible pipe, a flange-like mounting plate fixed in the vicinity of the fire hydrant valve, A joint provided at the other end of the flexible tube, and a fire hydrant storage box in which a fire hydrant valve insertion hole is formed in a back box through which the fire hydrant valve can be inserted and has a smaller opening area than the mounting plate, The fire hydrant valve is inserted into the fire hydrant valve insertion hole, the mounting plate is fixed to the back box, and the joint portion is connected to a branch joint provided on a water supply pipe piped inside the building wall. There is a special feature.

  The fire extinguishing equipment according to claim 7 of the present invention is characterized in that in the fire extinguishing equipment according to claim 6, there is further provided a screw for fixing the mounting plate and the back box.

  The fire extinguishing equipment according to claim 8 of the present invention is the fire extinguishing equipment according to claim 6 or 7, wherein the fire hydrant valve insertion hole is formed in the fire hydrant storage box so as to sandwich the portion connected to the fire hydrant valve from both sides. A pair of cover plates covering from the inside is fixed to the back box.

  The fire extinguishing equipment according to claim 9 of the present invention is the fire extinguishing equipment according to any of claims 6 to 8, wherein the mounting plate includes a fire hydrant valve joint for connecting the fire hydrant valve. There is a special feature.

  The fire-extinguishing equipment according to claim 10 of the present invention is the fire-extinguishing equipment according to any one of claims 6 to 9, wherein the mounting plate includes a joint portion for a flexible tube for connecting the flexible tube. It is characterized by being.

  A piping unit for fire extinguishing equipment according to claim 11 of the present invention includes a flexible pipe, a fire hydrant valve provided at one end of the flexible pipe, and a flange-shaped mounting plate fixed in the vicinity of the fire hydrant valve. And a joint portion provided at the other end of the flexible tube.

  A fire fighting equipment piping unit according to claim 12 of the present invention is the fire fighting equipment piping unit according to claim 11, characterized in that a screw is provided on the mounting plate.

  The piping unit for a fire extinguishing facility according to claim 13 of the present invention is the piping unit for a fire extinguishing facility according to claim 11 or 12, wherein the mounting plate includes a joint for a fire hydrant valve for connecting the fire hydrant valve. It is characterized by having.

  The piping unit for fire-extinguishing equipment according to claim 14 of the present invention is the piping unit for fire-extinguishing equipment according to any of claims 11 to 13, wherein the mounting plate is a flexible member for connecting the flexible tube. It is characterized by having a pipe joint.

  According to the present invention, at least the flexible pipe, the fire hydrant valve, and the joint part of the fire fighting equipment piping unit including the joint part are connected to the branch joint of the water supply pipe piped inside the building wall. Since the fire hydrant valve of the piping unit is inserted into the fire hydrant valve insertion hole formed in the back box of the fire hydrant storage box and fixed to the back box, even if the back box of the fire hydrant storage box is not installed, 1 Since it is possible to confirm the water leakage of the pipe from the branch part of the water supply pipe to the fire hydrant valve in a single water pressure test, it is not necessary to drain the water in the pipe, and the influence of other work such as the construction of the partition wall It is possible to cope with the change of the piping route caused by the position change of the fire hydrant storage box in the front and rear direction, left and right direction and up and down direction without considering the reduction of the piping space and the skill level of the operator. To experience and proficiency Uncertainties such as trim size and water stopping of piping that changes I can eliminate, it is possible to ensure the homogenization of the work.

It is a partially omitted schematic front view showing an example of fire extinguishing equipment according to an embodiment of the present invention. It is a schematic vertical side view of the fire extinguishing equipment shown in FIG. It is a schematic cross-sectional view of the fire extinguishing equipment shown in FIG. It is a perspective view of a piping unit for fire extinguishing equipment concerning an embodiment of the present invention. It is a top view of the piping unit for fire extinguishing equipment similarly. Fig. 2 shows a flange-like mounting plate of a fire-extinguishing equipment piping unit, (A) is a plan view in which a part of the flange-like mounting plate is broken, and (B) is a screw screwed to the back box of the fire hydrant storage box It is a cross-sectional view of the state fixed by. (A) is the perspective view of the state which made the fire hydrant valve of the fire fighting equipment piping unit oppose the fire hydrant valve insertion hole of a back box, (A) shows the attachment procedure of the fire fighting equipment piping unit to the back box of a fire hydrant storage box, B) is a perspective view of a state in which the fire hydrant valve of the piping unit for the fire extinguishing equipment is inserted into the fire hydrant valve insertion hole of the back box, and (C) is a flange-shaped cover hole covering the hydrant valve insertion hole of the back box with a cover plate. It is a perspective view of the state which fixed the attachment plate and cover plate of this to the back box with the screw. It is a top view which shows the other example of the piping unit for fire extinguishing equipment which concerns on embodiment of this invention. It is a top view which shows the further another example of the piping unit for fire extinguishing equipment which concerns on embodiment of this invention. An example of a conventional indoor fire hydrant equipment is shown. (A) is a front view of a state in which a fire hydrant valve, a nozzle, a hose and the like are accommodated in the back box of the fire hydrant storage box, and (B) is a basic view to the wall of the fire hydrant storage box. The left half of the drawing shows the state where the fire hydrant storage box is attached to the LGS wall, and the right half of the drawing shows the state where the fire hydrant storage box is attached to the concrete wall. Is shown. Fig. 2 shows the installation form of the fire hydrant storage box when the wall finish has been changed before, (A) is a cross-sectional view of the main part showing the initial installation position of the fire hydrant storage box, (B) is a short tube for protrusion FIG. 4C is a cross-sectional view of the main part of the fire hydrant storage box in a state in which does not protrude into the fire hydrant storage box. FIG. 5C is a cross-sectional view of the main part of the fire hydrant storage box with the protruding short tube slightly protruding into the fire hydrant storage box. It is a cross-sectional view. This is a cross-sectional view of the main part of the fire hydrant storage box, showing the installation configuration of the fire hydrant storage box when the wall finish has been changed before, with a gap between the back box of the fire hydrant storage box and the door frame. is there. The installation form of the fire hydrant storage box when the finishing of the wall is changed later is shown, (A) is a cross-sectional view of the main part showing the initial installation position of the fire hydrant storage box, (B) is a short tube for the protrusion A cross-sectional view of the main part of the fire hydrant storage box in a state where it protrudes into the fire hydrant storage box, (C) is a cross-sectional view of the main part of the fire hydrant storage box in which the short tube for protrusion protrudes further into the fire hydrant storage box FIG. It is. It is a transverse cross section of the important section showing the attachment form of the fire hydrant storage box when the finishing of the wall is changed later. This shows a piping method (called elbow return) that adjusts the eccentricity with multiple elbow joints, and (A) shows the front of the pipe with the hydrant valve position before and after the change shifted vertically. (B) is a side view, (C) is a front view of a pipe in a state where the position of the fire hydrant valve before the change and the position of the fire hydrant valve after the change are shifted vertically and horizontally, (D) the side view It is. It is explanatory drawing which shows the relationship between the core of piping, and the screwing allowance.

EMBODIMENT OF THE INVENTION Embodiment of the construction method of a fire extinguishing equipment which concerns on this invention, fire extinguishing equipment, and a piping unit for fire extinguishing equipment is demonstrated below, referring FIGS.
In addition, the same code | symbol is attached | subjected to the same or similar component through all embodiment.

  1 to 3 show examples of fire extinguishing equipment installed in buildings such as hotels, department stores, office buildings, commercial buildings, condominiums, hospitals, schools, theaters, inns, factories, warehouses, stations, etc. The fire extinguishing equipment is configured as an easy-to-operate No. 1 fire hydrant that can be operated by one person during fire fighting activities.

  That is, the fire extinguishing equipment includes a fire hydrant storage box 1 installed on a partition wall in a building, and a hose storage instrument having a pair of guide rollers 2 disposed in the fire hydrant storage box 1 as shown in FIGS. 3, a hose 4 (shape-retaining hose) housed and held in a spiral shape in the hose storage device 3, a nozzle 5 connected to the tip of the hose 4, and a back plate of the fire hydrant storage box 1. A fire hydrant valve 6 to which the base end part is connected, a flexible pipe 9 that connects the fire hydrant valve 6 and a branch joint 8 (cheese pipe) interposed in the vertical pipe 7, and one end part of the flexible pipe 9 is stored in the fire hydrant A flange-shaped mounting plate 10 for fixing to the box 1, a joint portion 11 provided at the other end of the flexible tube 9 and connected to a branch joint 8 (cheese tube) interposed in the vertical pipe 7; Formed in the fire hydrant storage box 1 so as to sandwich the part connected to the fire hydrant valve 6 from both sides A pair of cover plates 12 for covering the fire hydrant valve insertion hole 1a from the inner surface side of the fire hydrant storage box 1, a bolt 13a (male screw) and a nut for fixing the flange-shaped mounting plate 10 and the cover plate 12 to the fire hydrant storage box 1 A screw 13 made of 13b (female screw) is provided.

  As shown in FIGS. 1 to 3, the fire hydrant storage box 1 is made of a metal plate back box 1A having an open front surface, and a metal plate attached to an opening of the back box 1A by a mounting screw (not shown). And a fire hydrant door 1C made of a metal plate attached to the door frame 1B so as to be openable and closable. A fire hydrant valve 6 is provided on the back plate of the back box 1A. A circular fire hydrant valve insertion hole 1a is formed which can be inserted from the side and has an opening area smaller than that of the flange-shaped mounting plate 10.

  A plurality of bolt insertion holes through which bolts 13a (male screws) for fixing the flange-shaped mounting plate 10 and the cover plate 12 to the back box 1A are inserted around the hydrant valve insertion hole 1a of the back box 1A. 1b is formed for every equal angle (see FIG. 7A).

  4 and 5 show an example of a fire-extinguishing equipment piping unit used in the fire-extinguishing equipment. The fire-extinguishing equipment piping unit includes a flexible tube 9, a fire hydrant valve 6 provided at one end of the flexible tube 9, A flange-shaped mounting plate 10 fixed in the vicinity of the fire hydrant valve 6 and a joint portion 11 provided at the other end of the flexible tube 9 are provided, and are designed to withstand a working water pressure of 1.0 MPa. ing.

  The flexible tube 9 is formed of a flexible metal hose excellent in heat resistance, pressure resistance, and weather resistance, and a corrugated tube in which a metal tube is formed in a corrugated shape so that folds are continuously formed, and the corrugated tube A hose body 15 made of a metal braid that is externally covered so as to cover the outer surface side of the pipe and both ends are fixed to both ends of the corrugated pipe by press rings 14, and provided at both ends of the hose body 15, respectively. The connection part 16 is provided at least (refer FIG.4 and FIG.5).

  The corrugated tube forming the hose body 15 includes a spiral tube made of a stainless steel plate with a U-shaped corrugated cross section and a spiral continuous mountain, a one-pitch tube made of a stainless steel plate with an U-shaped corrugated cross section, or Omega tubes made of stainless steel plates with independent peaks and corrugated cross sections are used.

  In addition, the blade forming the hose body 15 includes a parallel wire braid in which several to ten or more wires are arranged in parallel and mechanically braided, and a tape material is produced by mechanically braiding 20 or more wires and this tape. A braided blade obtained by further mechanically braiding the material, or a ribbon blade (band blade) obtained by cutting a metal plate into a strip shape and knitting it into a bamboo basket shape is used. These blades protect the corrugated pipe against the internal fluid pressure applied to the corrugated pipe and reinforce the strength against various pressures and impacts from the outside.

  Furthermore, the connection parts 16 provided at both ends of the hose body 15 are each made of a cap nut, and are attached to both ends of the hose body 15 by flaring.

  The flexible tube 9 is not limited to the one according to the above-described embodiment, and has flexibility, heat resistance, pressure resistance, and weather resistance, and connection portions 16 are provided at both ends. Any structure and shape can be used. For example, the flexible tube 9 may be a flexible metal hose from which a blade is omitted. The hose body 9 of the flexible tube 9 is not limited to a metal one, and may be a synthetic resin hose or tube having heat resistance and pressure resistance. Further, the connecting portion 16 of the flexible tube 9 is not limited to the cap nut, and may be a union joint, a flange, or other joint.

  The fire hydrant valve 6 includes a valve box, a bonnet, a valve body, a valve stem, a handle, and the like, as in the known art, and the valve stem and the valve body are moved by the rotation of the handle and the valve stem. Is configured to open and close the flow path in the valve box by moving away from the valve seat or the valve seat formed in the valve box.

  In the present embodiment, the fire hydrant valve 6 is a manually operated angle valve with a pump start switch. When the water source is a gravity pressurization type water source, a manual type angle valve not equipped with a pump start switch is used.

  The fire hydrant valve 6 is connected to the inlet of the fire hydrant valve 6 at one end of the flexible tube 9 through a socket 17 and a joint part 18a for a fire hydrant valve provided on a flange-like mounting plate 10 and a joint part 18b for a flexible tube. Are connected to one end of the flexible tube 9.

  The socket 17 is screwed to one connecting portion 16 (cap nut) of the flexible tube 9, and a tapered female screw is formed on the inner peripheral surface of one end portion.

  The flange-shaped mounting plate 10 is formed in a rectangular shape larger than the fire hydrant valve insertion hole 1a of the back box 1A by a metal plate, and a fire hydrant valve joint portion 18a for connecting the fire hydrant valve 6 is possible. And a flexible tube joint 18b for connecting one end of the flexible tube 9.

  That is, a different-diameter nipple 18 having tapered male threads formed on the outer peripheral surfaces of both end portions is inserted in the center of the flange-like attachment plate 10. The different-diameter nipple 18 is inserted into the flange-like attachment plate 10. It is fixed to the center by welding (see FIG. 6). The larger diameter end of the different diameter nipple 18 is formed in the fire hydrant valve joint 18a, and the smaller diameter end is formed in the flexible pipe joint 18b (see FIGS. 4 to 6). ).

  Furthermore, a plurality of bolts 13a (which are respectively inserted into a plurality of bolt insertion holes 1b formed in the back box 1A and a plurality of bolt insertion holes 12b formed in the cover plate 12 described later are provided in the flange-shaped mounting plate 10. A male screw) is erected and fixed (see FIG. 6). These bolts 13a (male screws) are inserted into the corners of the rectangular flange-shaped mounting plate 10 and fixed by welding, and the bolt insertion holes 1b and the cover plate 12 of the back box 1A from the outside of the back box 1A. Is inserted into the bolt insertion hole 12b (see FIG. 7). A nut 13b (female screw) is screwed onto the bolt 13a (male screw) inserted through the flange-shaped mounting plate 10.

  The flange-shaped mounting plate 10 is fixed in the vicinity of the fire hydrant valve 6 (position several cm from the inlet of the fire hydrant valve 6) by screwing the inlet of the fire hydrant valve 6 into the joint part 18a for the fire hydrant valve of the different diameter nipple 18. The socket 17 provided at one end of the flexible tube 9 is screwed into the flexible tube joint portion 18b of the different diameter nipple 18 so as to be connected to one end of the flexible tube 9.

  In this embodiment, the flange-shaped mounting plate 10 is formed of a metal plate. However, in other embodiments, the flange-shaped mounting plate 10 may be formed of a synthetic resin plate.

  In the present embodiment, the flange-shaped mounting plate 10 is formed in a rectangular shape, but in other embodiments, the flange-shaped mounting plate 10 may be formed in a circular shape or other shapes. In this case, the size of the flange-shaped mounting plate 10 is formed so as to be larger than the opening area of the fire hydrant valve insertion hole 1a of the back box 1A.

  Further, in the present embodiment, a plurality of bolts 13a (male threads) are erected and fixed to the flange-shaped mounting plate 10, but in other embodiments, although not shown, a plurality of bolts 13a (male screws) are mounted on the flange-shaped mounting plate 10. The nut 13b (female screw) may be fixed by welding. In this case, each nut (female screw) 13b has a flange-like mounting plate 10 so as to match the plurality of bolt insertion holes 1b formed in the back box 1A and the plurality of bolt insertion holes 12b formed in the cover plate 12, respectively. Attach to. A bolt 13a (male screw) is inserted into and screwed into the nut 13b (female screw).

  Further, in the present embodiment, the different-diameter nipple 18 is attached to the center portion of the flange-shaped mounting plate 10, but in other embodiments, nipples having the same outer diameter at both ends may be attached.

  Furthermore, in this embodiment, the fire hydrant valve joint portion 18a and the flexible tube joint portion 18b (both ends of the different diameter nipple 18) of the flange-shaped mounting plate 10 are each formed in a male adapter type. In this case, either one of the fire hydrant valve joint portion 18a and the flexible pipe joint portion 18b of the flange-shaped mounting plate 10 may be formed in a female adapter type, or the fire hydrant valve joint portion 18a and the flexible pipe joint portion. Both of 18b may be formed in a female adapter type.

  The joint 11 provided at the other end of the flexible tube 9 connects the other end of the flexible tube 9 to the branch joint 8 provided in the vertical pipe 7. In the present embodiment, a nipple having tapered male threads formed on the outer peripheral surfaces of both end portions is used for the joint portion 11, and one end portion of the nipple is provided at the other end portion of the flexible tube 9. 16 (cap nut) is screwed, and the other end of the nipple is connected to the branch joint 8 of the vertical pipe 7.

  The cover plate 12 is formed by dividing a rectangular metal plate into left and right, and the two cover plates 12 divided into left and right are connected to the fire hydrant valve 6 (in this embodiment, A semicircular cutout 12a is formed so as to sandwich the different-diameter nipple 18) from both sides (see FIGS. 4 and 7).

  The two cover plates 12 are formed with a plurality of bolt insertion holes 12b that can match the plurality of bolt insertion holes 1b formed in the back box 1A (see FIGS. 4 and 7).

  In this embodiment, the hydrant valve insertion hole 1a of the back box 1A is formed in a circular shape and the cover plate 12 is formed in a rectangular shape. However, in other embodiments, the hydrant valve insertion hole 1a is formed in a rectangular shape. The cover plate 12 may be formed in a circular shape, or the fire hydrant valve insertion hole 1a and the cover plate 12 may be formed in the same shape (circular, rectangular, or other shape).

  In the present embodiment, the cover plate 12 is formed of a metal plate. However, in other embodiments, the cover plate 12 may be formed of a synthetic resin plate.

  Next, the construction method of the fire extinguishing equipment using the piping unit for fire extinguishing equipment mentioned above is demonstrated. The construction procedures shown in the following (1) to (7) show an example of installation work of the fire hydrant storage box 1 and piping work.

(1) The vertical pipe 7 (water supply pipe) is constructed. At this time, a branch joint 8 (cheese pipe) for branching and connecting the flexible pipe 9 or the horizontal pipe (not shown) of the piping unit for fire extinguishing equipment is attached to the vertical pipe 7.
(2) Install a horizontal pipe up to the fire hydrant storage box 1 (back or side of the fire hydrant storage box 1), and attach an elbow or socket to the end of the horizontal pipe. When the fire hydrant storage box 1 is close to the vertical pipe 7, the horizontal pipe is not installed.
(3) Connect the joint 11 of the flexible pipe 9 of the piping unit for the fire extinguishing equipment to the branch joint 8 of the vertical pipe 7 (or a horizontal pipe constructed up to the vicinity of the fire hydrant storage box 1) (see FIG. 4). At this time, the fire hydrant valve 6 is attached to a flange-like attachment plate 10 provided at the tip of the flexible tube 9.
(4) Close the fire hydrant valve 6, fill the vertical pipe 7 and the flexible pipe 9 (or the vertical pipe 7, the horizontal pulling pipe and the flexible pipe 9) with water, and apply a predetermined pressure. The water pressure test (test water pressure is 1.5 MPa) is performed to confirm whether there is water leakage from the pipe connection part and the fire hydrant valve connection part.
(5) The back box 1A of the fire hydrant storage box 1 is installed. At this time, install the back box 1A after attaching the fire fighting equipment piping unit to the back box 1A in advance according to the work situation at the site, or install the back box 1A after installing the back box 1A. Attach to.
The procedure for attaching the fire fighting equipment piping unit to the back box 1A is performed as in the following (5-1) to (5-3).
(5-1) First, the fire hydrant valve 6 of the fire fighting equipment piping unit is opposed to the fire hydrant valve insertion hole 1a from the back side of the back box 1A (see FIG. 7A).
(5-2) Next, the hydrant valve 6 is inserted into the hydrant valve insertion hole 1a of the back box 1A, the hose connection base (exit) of the hydrant valve 6 is aligned in a predetermined direction, and the flange-shaped attachment A plurality of bolts 13a (male screws) standing and fixed on the plate 10 are respectively inserted into a plurality of bolt insertion holes 1b formed in the back box 1A, and the flange-shaped mounting plate 10 is brought into contact with the back surface of the back box 1A. (Refer to FIG. 7 (B))
(5-3) After that, the pair of cover plates 12 divided into two are covered from the inner side of the back box 1A so that the different diameter nipple 18 connected to the fire hydrant valve 6 is sandwiched from both sides to cover the fire hydrant valve insertion hole 1a. At the same time, a plurality of bolts 13a (male screws) fixed upright on the flange-shaped mounting plate 10 are inserted into the plurality of bolt insertion holes 12b of the cover plate 12, and nuts 13b (cap nuts) are inserted into the respective bolts 13a (male screws). Are screwed to fix the flange-shaped mounting plate 10, the pair of cover plates 12, and the inner peripheral edge of the fire hydrant valve insertion hole 1a of the back box 1A (see FIG. 7C).
(6) When the installation of the back box 1A of the fire hydrant storage box 1 is finished, the wall surface on which the back box 1A is installed is finished (base board pasting, cloth pasting, painting, etc.).
(7) A door frame 1B provided with a fire hydrant door 1C is attached to the back box 1A.

Thus, according to the construction method of the fire extinguishing equipment using the above-described piping unit for fire extinguishing equipment, the following excellent operational effects can be achieved.
(1) Since the piping unit for the fire extinguishing equipment provided with the flexible pipe 9 and the fire hydrant valve 6 is used, all the pipes from the vertical pipe 7 to the fire hydrant valve 6 are installed when the fire hydrant storage box 1 is installed. It has been completed. As a result, the water pressure test after the completion of piping work can be done once if it is performed before finishing the wall surface (before attaching the base board). Even if a leak point is found in the pipe, it can be easily repaired because it is before the pipe is hidden by the base board.
(2) Since only one water pressure test is required, it is not necessary to drain water in the piping, and the time and cost for draining the piping can be reduced.
(3) Since the piping unit for the fire extinguishing equipment is provided with the flexible tube 9, even if the installation position of the fire hydrant storage box 1 is changed back and forth due to the finished position of the wall moving back and forth, there is a problem. It can be easily handled without messing around, and the time and cost required to replace the protruding piping can be reduced.
(4) Insert the fire hydrant valve 6 of the piping unit for fire extinguishing equipment into the fire hydrant valve insertion hole 1a formed in the back box 1A, and fix the flange-shaped mounting plate 10 fixed in the vicinity of the fire hydrant valve 6 with the screw 13 (bolt 13a and Since the nut 13b is fixed to the back box 1A, the protruding dimension of the fire hydrant valve 6 protruding into the back box 1A is constant. As a result, interference between the hydrant valve 6 and the hydrant door 1C can be prevented unless the depth dimension of the hydrant storage box 1 is reduced by removing the front edge of the back box 1A. In addition, the installation of the door frame 1B fits in the original dimensions, so that it is possible to reduce time and cost if a design change is required.
(5) When fixing the flange-shaped mounting plate 10 to the back box 1A, the cover plate 12 covers the fire hydrant valve insertion hole 1a of the back box 1A, so that the appearance is improved and the design is improved. It will be excellent. Further, since the bolts 13a (male screws) are erected and fixed to the flange-shaped mounting plate 10 in advance, the fixing operation of the mounting plate 10 and the mounting operation of the cover plate 12 can be performed quickly.
(6) Since the piping unit for the fire extinguishing equipment is provided with the flexible tube 9, the installation position of the fire hydrant storage box 1 is changed in the vertical direction or the horizontal direction depending on the specifications of the wall finishing material, and is formed in the back box 1A. Even if the position of the fire hydrant valve insertion hole 1a is shifted in the vertical direction or the left-right direction from the initial position, the fire-extinguishing equipment piping unit can follow the fire hydrant valve insertion hole 1a. For firefighting equipment piping units, if several types of flexible pipes 9 having different lengths are prepared, the position of the fire hydrant storage box 1 whose installation position has been changed can be changed to any position ( For example, even if it is changed to a position away from the initial position, it is possible to respond without causing a problem.
(7) Since the piping from the vertical pipe 7 to the fire hydrant valve 6 is performed by the flexible pipe 9, the piping work by screw connection is unnecessary, the piping work can be simplified, and the working time and cost are reduced. In addition, the operator's experience and skill level are not required, and uniform quality can be maintained. In addition, since there are fewer places where water leaks occur than in conventional piping using elbows, etc., it is possible to easily identify the water leak points during the water pressure test, reducing work time and costs.

  The present invention is not limited to the above embodiment, and various modifications can be made without departing from the spirit of the present invention.

  For example, in the above embodiment, the present invention is applied to the easy operability No. 1 fire hydrant of the indoor fire hydrant facility, but in other embodiments, the present invention is applied to the No. 1 fire hydrant, the No. 2 fire hydrant of the indoor hydrant facility, or the wide range. You may apply to a type 2 fire hydrant, or you may apply this invention to the sprinkle installation provided with the auxiliary water sprinkler.

  Moreover, in said embodiment, although the socket 17 was connected to the connection part 16 (cap nut) provided in the one end part of the flexible tube 9 of the piping unit for fire extinguishing equipment, in other embodiment, in FIG. As shown, a nipple 19 and an elbow 20 are sequentially connected to a connecting portion 16 (cap nut) provided at one end of a flexible tube 9 of a fire extinguishing equipment piping unit, and the flexible tube 9 is parallel to the back plate of the back box 1A. Alternatively, as shown in FIG. 9, the nipple 19 and the socket 21 are sequentially connected to a connection portion 16 (cap nut) provided at one end portion of the flexible tube 9 of the fire fighting equipment piping unit. Anyway.

  Furthermore, in said embodiment, the socket 17 is connected to the connection part 16 (cap nut) provided in the one end part of the flexible tube 9 of the piping unit for fire extinguishing equipment, and the said socket 17 is attached to the flange-shaped attachment board 10. In the other embodiment, the socket 17 is omitted, and the connection portion 16 (cap nut) provided at one end of the flexible tube 9 is a flange-shaped mounting plate. You may make it connect directly to the joint part 18b for 10 flexible pipes.

  Further, in the above embodiment, the hydrant valve insertion hole 1a is formed in the back plate of the back box 1A of the fire hydrant storage box 1, and the fire hydrant valve 6 of the piping unit for the fire extinguishing equipment is connected to the back box from the rear side of the back box 1A. In the other embodiment, the hydrant valve insertion hole 1a is formed in the side plate of the back box 1A of the fire hydrant storage box 1, and the fire hydrant valve 6 of the fire fighting equipment piping unit is connected to the back box 1A. You may make it pull out in the back box 1A from the side of this.

  Furthermore, in the above embodiment, the fire hydrant valve 6 is fixed to the back box 1A of the fire hydrant storage box 1 via the flange-shaped mounting plate 10, but in other embodiments, the fire retardant piping unit The flange-shaped mounting plate 10 may be omitted, and the fire hydrant valve 6 may be fixed to the back box 1A by using an intermediate fitting or a joint-like one for the back box 1A of the fire hydrant storage box 1.

  Furthermore, in the above embodiment, the flange-shaped mounting plate 10 and the cover plate 12 are fixed to the back box 1A of the fire hydrant storage box 1 with screws 13 (bolts 13a and nuts 13b). In this case, the flange-shaped mounting plate 10 and the cover plate 12 may be fixed to the back box 1A by other means. For example, the flange-shaped mounting plate 10 and the cover plate 12 may be fixed to the back box 1A by rivets or welding.

1 is a fire hydrant storage box 1A is a back box 1a is a hole for inserting a fire hydrant valve 6 is a fire hydrant valve 7 is a vertical pipe (water supply pipe)
8 is a branch joint, 9 is a flexible tube, 10 is a flange-shaped mounting plate, 11 is a joint portion, 12 is a cover plate, 13 is a screw, 18a is a joint portion for a fire hydrant valve, and 18b is a joint portion for a flexible tube.

Claims (14)

Connecting a joint portion provided at the other end of the flexible pipe having a fire hydrant valve at one end to a branch joint provided in a water supply pipe piped inside the building wall;
A method for constructing fire extinguishing equipment, comprising: inserting the fire hydrant valve into a fire hydrant valve insertion hole formed in a back box of the fire hydrant storage box and allowing the fire hydrant valve to be inserted therethrough, and fixing the fire hydrant valve to the back box. After the step of connecting the joint provided at the other end of the flexible pipe having the fire hydrant valve at one end to the branch joint provided at the water supply pipe piped inside the building wall,
A step of not performing draining work in the pipe after performing a water pressure test of the pipe once;
The construction method of the fire extinguishing equipment of Claim 1 containing this.   The flexible pipe includes a flange-shaped mounting plate fixed in the vicinity of the fire hydrant valve, the fire hydrant valve is inserted into the fire hydrant valve insertion hole having an opening area smaller than the mounting plate, and the mounting plate is The construction method of the fire extinguishing equipment of Claim 1 or 2 including the process of fixing to the said back box.   The construction method of fire extinguishing equipment according to claim 3, wherein the mounting plate and the back box are fixed with screws.   5. The method further comprises a step of fixing a pair of cover plates to the back box that cover the fire hydrant valve insertion hole from the inside of the fire hydrant storage box so as to sandwich the portion connected to the fire hydrant valve from both sides. The construction method of the fire extinguishing equipment in any one of. A flexible tube, a fire hydrant valve provided at one end of the flexible tube, a flange-shaped mounting plate fixed in the vicinity of the fire hydrant valve, and a joint provided at the other end of the flexible tube; A hydrant storage box in which a hydrant valve insertion hole is formed in a back box, the hydrant valve insertion hole having a smaller opening area than the mounting plate can be inserted;
The fire hydrant valve is inserted into the fire hydrant valve insertion hole, and the mounting plate is fixed to the back box,
The fire extinguishing equipment, wherein the joint portion is connected to a branch joint provided in a water supply pipe piped inside the building wall.   The fire-extinguishing equipment according to claim 6, further comprising a screw for fixing the mounting plate and the back box.   A pair of cover plates that cover the fire hydrant valve insertion hole from the inside of the fire hydrant storage box so as to sandwich the portion connected to the fire hydrant valve from both sides are fixed to the back box. Fire extinguishing equipment according to 6 or 7.   The fire extinguishing equipment according to any one of claims 6 to 8, wherein the mounting plate includes a joint for a fire hydrant valve for connecting the fire hydrant valve.   The fire extinguishing equipment according to any one of claims 6 to 9, wherein the mounting plate includes a joint portion for a flexible tube for connecting the flexible tube.   A flexible tube, a fire hydrant valve provided at one end of the flexible tube, a flange-shaped mounting plate fixed in the vicinity of the fire hydrant valve, and a joint provided at the other end of the flexible tube; A piping unit for fire extinguishing equipment, comprising:   The pipe for fire extinguishing equipment according to claim 11, wherein a screw is provided on the mounting plate.   13. The fire fighting equipment piping unit according to claim 11, wherein the mounting plate includes a fire hydrant valve joint for connecting the fire hydrant valve.   The piping unit for a fire extinguishing equipment according to any one of claims 11 to 13, wherein the mounting plate includes a joint portion for a flexible tube for connecting the flexible tube.

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