JP6892074B2 - Construction method of fire extinguishing equipment, fire extinguishing equipment, and piping unit for fire extinguishing equipment - Google Patents

Description

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

Generally, in large buildings such as hotels, department stores, and office buildings, it is obligatory to install indoor fire hydrant equipment and sprinkler equipment.

The indoor fire hydrant equipment includes a No. 1 fire hydrant, an easy-to-operate No. 1 fire hydrant, a No. 2 fire hydrant, and a wide range type No. 2 in which a hose, a nozzle, a fire hydrant valve, etc. are housed in a fire hydrant storage box installed on the wall inside the building. 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 supply pipe installed behind the ceiling of a building and a plurality of sprinkler heads installed on the ceiling are connected by sprinkler pipes, and an auxiliary sprinkler plug (in the storage box) is provided in a portion that cannot be covered by the sprinkler head. It is known that a nozzle, a hose, a fire hydrant valve, and the like are installed (see, for example, Patent Document 5 and Patent Document 6).

By the way, the construction method of 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 is different depending on the situation of the site, and there are various construction procedures. The construction procedures shown in (1) to (8) below show an example of installation work and piping work of a fire hydrant storage box of indoor fire hydrant equipment.
(1) Install vertical pipes (water supply pipes). At this time, a branch joint (cheese pipe) for branching and connecting the horizontal pulling pipe (water supply pipe) is attached to the vertical pipe.
(2) Install the horizontal pulling pipe to the vicinity of the fire hydrant storage box (the position behind or beside the fire hydrant storage box), attach an elbow or socket to the end of the horizontal pulling pipe described above, and close it with a screw plug. If the fire hydrant storage box is close to the vertical pipe, do not install the horizontal pipe, but attach a screw plug to the branch joint of the vertical pipe.
(3) Fill the inside of the vertical pipe and the inside of the horizontal pipe with water, apply a predetermined pressure, and perform a water pressure test to check if there is any water leakage from the screwed part of the pipe.
(4) Install the back box (body) 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 fire hydrant valve, and at the end of the pipe located in the back box. Install a fire hydrant valve.
(6) In order to confirm water leakage at the connection part of the fire hydrant valve, after closing the fire hydrant valve, fill the vertical pipe and the horizontal pipe with water and perform the water pressure test again.
(7) Finish the wall surface on which the back box is installed (pasting the base board, pasting the cloth, painting, etc.).
(8) Attach a door frame with a fire hydrant door to the back box.

Further, the construction method for installing the fire hydrant storage box of the auxiliary sprinkler system of the sprinkler system and the piping work for the fire hydrant storage box also differs depending on the situation at the site, and there are various construction procedures. The construction procedures shown in (1) to (8) below show an example of installation work and piping work of a fire hydrant storage box for an auxiliary sprinkler.
(1) Attach a branch joint (cheese pipe) to the pipe (water supply pipe) to which the sprinkler head is attached via the automatic alarm valve.
(2) Install the pipe from the branch joint to the vicinity of the fire hydrant storage box (behind or beside the storage box), attach an elbow or socket to the end of the pipe, and close it with a screw plug.
(3) Fill the pipe with water, apply a predetermined pressure, and perform a water pressure test to check if there is any water leakage from the screwed part of the pipe.
(4) Install the back box (body) of the fire hydrant storage box.
(5) After draining the water in the pipe and removing the screw plug at the end of the pipe, adjust the alignment of the fire hydrant storage box and the fire hydrant valve, and attach the fire hydrant valve to the end of the pipe located inside the back box.
(6) In order to confirm water leakage at the connection part of the fire hydrant valve, after closing the fire hydrant valve, fill the pipe with water and perform the water pressure test again.
(7) Finish the wall surface on which the back box is installed (pasting the base board, pasting the cloth, painting, etc.).
(8) Attach a door frame with a fire 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.

This is because the fire hydrant valve installed in the storage box is screwed and fixed to the end of the pipe inserted into the pipe through hole that is opened in advance in the back box of the storage box, so the back box of the fire hydrant storage box is installed. This is because if it is not done, the piping from the branch portion of the vertical pipe or the like to the fire hydrant valve cannot be performed, and water leakage cannot be confirmed.

When considering only piping work, it is sufficient to perform a water pressure test after attaching a fire hydrant valve to the end of the pipe, but since there are other processes at the construction site, in reality, other processes are required. Since it depends on (especially the attachment of the base board), the water pressure test has been performed at least twice.

In the water pressure test, after filling the pipe 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. Then, if the pressure in the pipe does not drop after a certain period of time, it is judged that there is no water leakage.

Therefore, in order to install the fire hydrant valve, it is necessary to drain the water in the pipe filled with the first water pressure test, but at the site where the drainage route is incomplete, use a hose from the bottom of the pipe. It must be discharged into waterways and manholes on the premises.

In addition, since the drainage in the pipe is discharged by free fall, it may take a considerable amount of time depending on the scale of the building, and it is necessary to arrange a worker to monitor the hose for breakage or disconnection on the way. ..

Furthermore, depending on the progress of the construction, the work of installing the back box or the work of 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 at the same time. Even if it is found, if the base board is attached to that location, the work space cannot be secured, and the attached base board must be removed, resulting in extra cost and time. Therefore, in the water pressure test, it is necessary to confirm the presence or absence of water leakage in the piping hidden by the base board before the base board is attached. First, the water pressure test is performed once after the piping work near the fire hydrant storage box is completed. After that, in many cases, it is necessary to carry out at least two water pressure tests in order to confirm water leakage at the connection part of the fire hydrant valve when the fire hydrant valve is attached to the end of the pipe after the base board is attached. 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 builder, and it is always subject to changes in other processes. Each work process must be determined with caution.
If it is not possible to secure the number of workers or change the layout due to changes in other works, and if other works proceed without waiting for the work to be completed, the cost burden associated with rework and repair work will be incurred. The construction cost will increase significantly.

In addition, in the construction of the indoor fire hydrant equipment and sprinkler equipment described above, it is necessary to change the position where the fire hydrant storage box is installed back and forth by moving the finished position of the wall back and forth from the first finished position. The position of the fire hydrant valve installed in the box is also greatly affected, and there is a problem that another work is required, which is costly and time-consuming.

Normally, the door frame fits in the specified position by aligning the front edge of the fire hydrant storage box with the finished position of the wall, so it is assumed that the fire hydrant storage box will fit in the finished position of the wall specified in advance, and the piping is placed in the back box. Install 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 screw formed on the outer peripheral surface of the end may be screwed in.

However, at the construction site, the finished position of the wall is frequently changed, and the content of the change has a great influence on the installation of the hydrant valve in the hydrant storage box.

For example, in the cases shown in (a) to (d) below, the installation of the fire hydrant valve in the fire hydrant storage box will be greatly affected.
(A) When the back box is not installed yet and the finished position of the wall is before the plan.
(B) When the back box is already installed and the finished position of the wall is before the plan.
(C) When the back box is not installed yet and the finished position of the wall is later than planned.
(D) When the back box is already installed and the finished position of the wall is later than planned.

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

In FIG. 10, 30A is the back box of the fire hydrant storage box 30, 30B is the door frame of the fire hydrant storage box 30, 30C is the fire hydrant door of the fire hydrant storage box 30, 34 is the top plate (partition plate), and 35 is the guide roller 36. 37 is a handle, 38 is a door rotation shaft, 39 is a mounting screw, 40 is a nut, 41 is a pipe through hole, 42 is a short pipe for protrusion with a male screw 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.

Further, in the fire hydrant storage box 30 shown in FIG. 10, the back box 30A and the door frame 30B are attached by inserting a plurality of mounting screws 39 into the back box 30A and the door frame 30B and using nuts 40 for front and rear. The position is being adjusted.

However, when the fire hydrant storage box 30 is installed, if the finished position of the wall is as described in (a) above, the front edge of the fire hydrant storage box 30 should be aligned with the changed finished position of the wall. However, depending on the changed dimensions of the piping, the end of the short pipe 42 that has been projected in advance may be behind the back box 30A, and a fire hydrant valve 31 is attached. It becomes impossible (see FIG. 11 (B)).
Further, 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 unless the required screw length protrudes to some extent from the back plate of the back box 30A. (See FIG. 11 (C)).
In order to solve these problems, the short pipe 42 for protrusion must be replaced, which is costly and time consuming.

Further, when the finished position of the wall is as described in (a) above, the space between the back box 30A and the door frame 30B becomes wide, so that it can be dealt with by using a long mounting screw 39. When the changed dimensions are large, a gap may occur between the back box 30A and the door frame 30B (see FIG. 12). At this time, with respect to the piping, since the position of the end portion of the short pipe 42 is determined according to the position of the fire hydrant storage box 30, 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 costly and time-consuming.

Further, when the finished position of the wall is as shown in (c) above, there is no particular problem in installing the fire hydrant storage box 30 as in (a) above, but when the protruding pipe is used, the back Since the end of the protruding short pipe 42 in the box 30A is in front of the initial position, the front part (handle part) of the fire hydrant valve 31 interferes when attaching the door frame 30B depending on the changed dimensions. In some cases (see FIGS. 13 (A) to 13 (C)).

As a countermeasure, the short pipe 42 for protrusion must be replaced with a shorter one, which is costly and time-consuming.
Further, even when only the joint is attached without the protruding pipe, the joint end and the back box 30A may interfere with each other depending on the changed dimensions, and a large replacement work is required.

Then, when the finished position of the wall is as shown in (d) described above, the front edge of the back box 30A protrudes forward from the finished surface of the wall, and the door frame 30B is attached depending on the dimension to be changed. May not be possible (see FIG. 14). Further, regarding the piping, since the position of the end portion of the short pipe 42 is determined according to the position of the fire hydrant storage box 30 as in the above (a), no problem occurs.

As a countermeasure, it is sufficient to change the design of the door frame 30B, but there may be a design problem, and if the door frame 30B is installed in a place where the design is important, the back box 30 should be replaced. Alternatively, a very large amount of work is required, such as removing the front edge portion of the back box 30 that protrudes from the finished surface.

In this way, changing the finished position of the wall in the front-rear direction has a great influence on the fire hydrant storage box 30 and the piping, and causes various problems. In addition, there is no uniform response method, and it varies depending on the situation at the site. Furthermore, it may be necessary to have a meeting with other works, and the time spent for this will be a heavy burden.

As a result, the installation work of the fire hydrant storage box 30 is often performed after the finished position of the wall is determined, and it is avoided that the piping work and the installation work of the back box 30A are performed at the same time.

Furthermore, in the construction of the indoor fire hydrant equipment and sprinkler equipment described above, the installation position of the fire hydrant storage box 30 may change depending on the specifications of the wall finishing material, and the position of the end of the preceding pipe and the fire hydrant storage box 30 There is a problem that the position of the pipe through hole 41 formed in the back box 30A is displaced 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 in contact with the left and right ends of the fire hydrant storage box 30 cannot be used as they are in the standard dimensions, the fire hydrant is stored. It is cut and attached 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 that the visual balance is not lost (this is called joint alignment).

Further, the fire hydrant storage box 30 is not installed according to the floor surface, and a parting plate called a skirting board is attached to the wall surface of the lower end portion where the floor surface and the wall surface are in contact with each other, and the fire hydrant storage box 30 is attached to the upper end portion thereof. It is often installed so that the lower end of the door frame 30B is in contact with the door frame 30B.

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 construction is affected.

In the case of panels and tiles, the allocation (determining the mounting position of tiles etc. 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 taken into consideration. .. Normally, after the tile split 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. Will be.

Therefore, no piping work is performed before the decision on the allocation of panels and tiles, and there is no deviation between the position of the end 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 decision. In that case, a deviation will naturally occur.

Further, when the dimensions of the drawstring (parting plate) are 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 between the two. The pipe through hole 41 formed in the back box 30A is formed to be larger than the outer diameter of the pipe, but if the deviation is large, it is necessary to replace the pipe.

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

That is, in the case of (a) described above, the piping is replaced by using a piping method (called elbow return) 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, if the back box 30A of the fire hydrant storage box 30 is already installed and the work cannot be performed, the back box 30A is once removed, the piping is replaced, and the back box 30A is replaced again. It needs to be installed, which is extremely troublesome.

Further, in the case of (b) described above, if the piping method called elbow return cannot be used, the piping through hole 41 of the back box 30A can be increased depending on the size of the deviation of the fire hydrant storage box 30. 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 base should be in a position where they can be screwed in without interfering with the side plate and top plate 34 (partition plate) of the back box 30A. Further, even if the position where the fire hydrant valve 31 is attached is in the opposite direction to the above, it may interfere with the equipment stored in the back box 30A (for example, the hose storage equipment 35, etc.), so that the measurement should be performed accurately in advance. There is a need to do.

Since the work of enlarging the pipe through hole 41 of the back box 30A is performed at the site, there are restrictions on the tools used. It is natural that firearms such as gas burners cannot be used, but since the back box 30A is painted, if sparks are scattered, the painted surface will be soiled, so it is necessary to take curing measures and the painting is done. It is necessary to perform repair painting to prevent the generation of rust due to peeling. Further, if the iron powder scattered in the back box 30A is not completely removed, rust will be generated.

Further, if the above method cannot be used, the height of the pipe is adjusted by bypassing the pipe up and down, or the pipe is replaced.

As described above, when the installation position of the fire hydrant storage box 30 changes in the vertical direction due to the change in the wall finishing specifications, the problems shown in the following (a) to (d) occur.
(B) It is necessary to replace the piping in order to eliminate the deviation between the piping through hole 41 of the back box 30A and the piping.
(B) Piping work is performed in a limited space, and since the starting point (branch point) and target position (piping through hole 41 of the back box 30A) of the piping are determined, skilled workers are required.
(C) The work of remodeling the back box 30A at the site will require extra repair work if the surroundings are not properly cured and cleaned up, which will increase the cost and time.
(D) Depending on the situation, the pipes may be replaced by going back to the branch point of the pipes, and the influence 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 the finished position of the wall is not changed or the specifications of the wall finishing are not changed. This is because, in fire extinguishing equipment, the standard of the screw used for connecting the pipe is determined, and the taper screw for the pipe is used for the screw.

Generally, in fire extinguishing equipment, it is obligatory to use steel pipes except for some underground buried parts according to the provisions of laws and regulations, and the pipes are connected by screws. This screw is exclusively for piping, which is called a taper screw for pipes. 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 joints and fire hydrant valves 31 are also formed as pipe taper threads.

Since the male and female threads of the taper screw for pipes are formed in a tapered shape, the screw theoretically stops at the position of the reference diameter, but when the screw is further screwed, the screw thread bites into the thread and the screw comes into close contact with the whole. Here, the reference diameter is a reference diameter for determining the diameter dimension of the taper screw, and the position of the reference diameter is the position of the plane perpendicular to the axis for determining the reference diameter of the taper screw. is there.

Further, in the taper screw for pipes, a sealing tape (tape made of Teflon (registered trademark)) is wrapped around the threaded portion or a liquid sealing material is applied to the threaded portion in order to improve the sealing property.

As described above, when the pipe, the joint, the fire hydrant valve 31, etc. are connected by the pipe taper screw, the water stopping effect can be obtained by the close contact of the screw, but the pipe taper screw must be tightened until the screw stops turning. ..

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

Normally, the piping of fire extinguishing equipment at a construction site is performed in the order of (i) pipe member cutting work, (ii) thread cutting work, (iii) sealing work, (iv) screwing work, and (v) rust prevention treatment. It is done.

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

In addition, in thread cutting work, there are cases where thread cutting is performed at the work site and cases where a short pipe that has been measured and threaded based on the drawing is prepared in advance, but there are many same piping routes as in an apartment. Except for cases, it is done at the work site. Since a special tool is used for this thread cutting, it is possible to process with a certain size to some extent, but the screwing allowance of the male screw is adjusted according to the female thread of the fitting etc. to be used, and the work is easy. Is being done.

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

Furthermore, in the sealing work, the screwing allowance can be adjusted by the number of windings of the sealing tape, so the operator can adjust the number of windings of the sealing tape while considering the tolerance of the screws to be used, the adjustment of the tightening force, and the screw stop position. It is adjusted, but it requires the experience and skill of the worker.

Further, in the screwing work, the screw is screwed in 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 shortly before the target angle, and the next pipe is closed by hand before adjusting the target angle. Further, in the case of the fire hydrant valve 31, the discharge port is screwed into the end of the pipe so as to face a predetermined direction, and the angle thereof is adjusted.

However, when adjusting the angle of the fire hydrant valve 31 or the like, never turn it in the direction of loosening the screw. This is because once the screw is tightened, a gap is created between the compressed sealing tape or sealing material and the screw, which causes water leakage. When adjusting the angle of the fire hydrant valve 31 or the like, if it exceeds the target angle, it must be rotated one more time, but if the screw margin is small or the number of windings of the sealing tape, it can be rotated to a predetermined angle. It may not be possible to make it. 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 then perform the screwing operation again, which is extremely troublesome.

In the rust prevention treatment, rust preventive paint is applied to the screw part to prevent corrosion after the screwing work is completed, but if the seal tape protruding from the screw part is not removed, the screw part is prevented. Rust paint does not adhere and causes rust. In addition, paint must be applied to the scratches on the fittings and pipes that are gripped by the tool.

In this way, in piping work using taper screws for pipes, various problems and factors that require attention occur, and the finished dimensions and water stoppage are affected by the experience and skill of the operator. , It is difficult to guarantee uniform quality.

Jikkenhei 02-037172 Jikkenhei 03-078666 Jikkenhei 06-039028 Japanese Unexamined Patent Publication No. 2006-223447 Japanese Unexamined Patent Publication No. 06-105928 Japanese Unexamined Patent Publication No. 2007-014373

The present invention has been made in view of such problems, and an object thereof is that the water pressure test after the completion of the piping work can be performed only once, and the installation position of the storage box can be set in the front-rear direction, the up-down direction, or the left-right direction. Even if the direction is changed, it can be easily dealt with without causing any problems, and the plumbing work by screw connection is not required, and the plumbing work can be simplified. , And to provide a piping unit for fire extinguishing equipment.

In order to achieve the above object, in the method of constructing the fire extinguishing equipment according to claim 1 of the present invention, a joint portion provided at the other end of a flexible pipe having a fire hydrant valve at one end is piped inside the building wall. The fire hydrant valve is inserted into the fire hydrant valve insertion hole formed in the back box of the fire hydrant storage box and into which the fire hydrant valve can be inserted, and the fire hydrant valve is inserted into the back box. It is characterized by including a fixing process.

The method for constructing the fire extinguishing equipment according to claim 2 of the present invention is the method for constructing the fire extinguishing equipment according to claim 1, wherein the joint portion provided at the other end of the flexible pipe provided with the fire hydrant valve at one end. Is connected to the branch joint provided in the water supply pipe installed inside the building wall, and then the water pressure test of the pipe is performed once, and then the drainage work in the pipe is not performed. It is characterized by including.

The method for constructing the fire extinguishing equipment according to claim 3 of the present invention is the flange-shaped mounting plate in which the flexible pipe is fixed in the vicinity of the fire hydrant valve in the method for constructing the fire extinguishing equipment according to claim 1 or 2. The fire hydrant valve is inserted into the fire hydrant valve insertion hole having an opening area smaller than that of the mounting plate, and the mounting plate is fixed to the back box.

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

The method for constructing the fire extinguishing equipment according to claim 5 of the present invention is the method for constructing the fire extinguishing equipment according to any one of claims 1 to 4, wherein the portion connected to the fire hydrant valve is sandwiched from both sides. It is characterized by further including a step of fixing a pair of cover plates that cover 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-shaped mounting plate fixed in the vicinity of the fire hydrant valve, and the above-mentioned possible. A joint portion provided at the other end of the flexible pipe and a fire hydrant storage box in which the fire hydrant valve can be inserted and a fire hydrant valve insertion hole having an opening area smaller than that of the mounting plate is formed in the back box are provided. 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 in a water supply pipe piped inside the building wall. It is unique in that.

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

In the fire extinguishing equipment according to claim 6 or 7, the fire extinguishing equipment according to claim 8 of the present invention has a hole for inserting the fire hydrant valve in the fire hydrant storage box so as to sandwich a portion connected to the fire hydrant valve from both sides. It is characterized in that a pair of cover plates that cover from the inside are 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 one of claims 6 to 8, wherein the mounting plate includes a joint portion for a fire hydrant valve for connecting the fire hydrant valve. It is unique in that.

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 flexible pipe joint portion for connecting the flexible pipe. It is characterized by being there.

The 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. It is characterized in that it includes a joint portion provided at the other end of the flexible pipe.

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

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

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

According to the present invention, the joint portion of a fire extinguishing equipment piping unit provided with at least a flexible pipe, a fire hydrant valve and a joint portion is connected to a branch joint of a water supply pipe piped inside the building wall, and the fire extinguishing equipment is used. 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 leak of the pipe from the branch part of the water supply pipe to the fire hydrant valve by the water pressure test, it is not necessary to drain the water in the pipe, and the influence of other works such as the construction of the partition wall. It is possible to respond to changes in the piping route due to changes in the position of the fire hydrant storage box in the front-rear direction, left-right direction, and up-down direction without considering the reduction of piping space and the skill level of the operator. It is possible to eliminate uncertain factors such as the finished size of the pipe and water stoppage that change depending on the experience and skill level of the pipe, and it is possible to ensure the homogenization of the work.

It is a partially omitted schematic front view which shows an example of the fire extinguishing equipment which concerns on embodiment of this invention. It is a schematic vertical sectional 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 the piping unit for fire extinguishing equipment which concerns on embodiment of this invention. It is also a plan view of a piping unit for fire extinguishing equipment. The flange-shaped mounting plate of the piping unit for fire extinguishing equipment is shown, (A) is a plan view in which a part of the flange-shaped mounting plate is broken, and (B) is a screw of the flange-shaped mounting plate into the back box of the fire hydrant storage box. It is a cross-sectional view of the state fixed by. The procedure for attaching the fire hydrant equipment piping unit to the back box of the fire hydrant storage box is shown, and (A) is a perspective view of the fire hydrant valve of the fire hydrant equipment piping unit facing the fire hydrant valve insertion hole of the back box. B) is a perspective view of the fire hydrant valve of the fire extinguishing equipment piping unit inserted into the fire hydrant valve insertion hole of the back box, and (C) is a flange shape while covering the fire hydrant valve insertion hole of the back box with a cover plate. It is a perspective view of the state where the mounting plate and the cover plate of No. 1 are fixed to the back box with screws. It is a top view which shows another example of the piping unit for fire extinguishing equipment which concerns on embodiment of this invention. It is a top view which shows still another example of the piping unit for fire extinguishing equipment which concerns on embodiment of this invention. An example of the 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, etc. are housed in the back box of the fire hydrant storage box, and (B) is a basic 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. The installation form of the fire hydrant storage box when the wall finish is changed before is shown, (A) is a cross-sectional view of the main part showing the initial installation position of the fire hydrant storage box, and (B) is a short tube for protrusion. Is a cross-sectional view of the main part of the fire hydrant storage box in a state where is not protruding into the fire hydrant storage box, and (C) is a cross-sectional view of the main part of the fire hydrant storage box in a state where the short tube for protrusion slightly protrudes into the fire hydrant storage box. It is a cross-sectional view. The installation form of the fire hydrant storage box when the wall finish is changed before is shown, and the cross-sectional view of the main part of the fire hydrant storage box with a gap between the back box of the fire hydrant storage box and the door frame is shown. is there. The installation form of the fire hydrant storage box when the finish 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, and (B) is a short tube for protrusion. Cross-sectional view of the main part of the fire hydrant storage box protruding into the fire hydrant storage box, (C) is the cross-sectional view of the main part of the fire hydrant storage box with the short pipe for protrusion protruding further into the fire hydrant storage box. It is a figure. Is. It is sectional drawing of the main part which shows the mounting form of the fire hydrant storage box when the finish of a wall is changed later. A piping method (called elbow return) that adjusts the eccentricity with multiple elbow joints is shown, and (A) is the front of the pipe with the position of the fire hydrant valve before the change and the position of the fire hydrant valve after the change shifted up and down. FIG., (B) is a side view thereof, (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 displaced vertically and horizontally, and (D) the side view thereof. Is. It is explanatory drawing which shows the relationship between the core of a pipe and the screwing allowance.

The construction method of the fire extinguishing equipment, the fire extinguishing equipment, and the embodiment of the piping unit for the fire extinguishing equipment according to the present invention will be described below with reference to FIGS. 1 to 7.
The same or similar components are designated by the same reference numerals throughout all the embodiments.

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

That is, as shown in FIGS. 1 to 3, the fire hydrant facility is a hose storage device having a fire hydrant storage box 1 installed on a partition wall in a building and a pair of guide rollers 2 arranged in the fire hydrant storage box 1. 3, the hose 4 (shape-retaining hose) spirally housed and held in the hose storage device 3, the nozzle 5 connected to the tip of the hose 4, and the hose 4 attached to the back plate of the fire hydrant storage box 1. The fire hydrant valve 6 to which the base end is connected, the flexible pipe 9 connecting the fire hydrant valve 6 and the branch joint 8 (cheese pipe) interposed in the vertical pipe 7, and one end of the flexible pipe 9 are 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 pipe 9 and connected to a branch joint 8 (cheese pipe) interposed in the vertical pipe 7 and a joint portion 11. A pair of cover plates 12 and a flange-shaped mounting plate 10 that cover the fire hydrant valve insertion hole 1a formed in the fire hydrant storage box 1 from the inner surface side of the fire hydrant storage box 1 so as to sandwich the portion connected to the fire hydrant valve 6 from both sides. A screw 13 composed of a bolt 13a (male screw) and a nut 13b (female screw) for fixing the cover plate 12 to the fire hydrant storage box 1 is provided.

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

Further, around the fire hydrant valve insertion hole 1a of the back box 1A, 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. 1b is formed at equal angles (see FIG. 7A).

4 and 5 show an example of a fire extinguishing equipment piping unit used for the fire extinguishing equipment, and the fire extinguishing equipment piping unit includes a flexible pipe 9, a fire hydrant valve 6 provided at one end of the flexible pipe 9. It is provided with 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 pipe 9, and is designed to withstand a water pressure of up to 1.0 MPa. ing.

The flexible tube 9 is formed of a flexible metal hose having excellent heat resistance, pressure resistance, and weather resistance, and is a corrugated tube in which a metal tube is formed in a wavy shape so that folds are continuously formed, and the corrugated tube. A hose main body 15 made of a metal blade, which is externally covered so as to cover the outer surface side of the pipe and whose both ends are fixed to both ends of the corrugated pipe by a press ring 14, and both ends of the hose main body 15 are provided, respectively. It is provided with at least a connecting portion 16 (see FIGS. 4 and 5).

The corrugated tube forming the hose body 15 has a spiral tube made of stainless steel plate having a U-shaped corrugated cross section and a spiral continuous mountain, a one-pitch tube made of stainless steel plate having a U-shaped corrugated cross section and an independent mountain, or An omega tube with an omega shape (Ω) and an independent mountain stainless steel plate is used.

Further, for the blade forming the hose body 15, a parallel wire blade in which several to ten or more wires are arranged in parallel and mechanically braided, and a tape material in which 20 or more wires are mechanically braided are made, and this tape is used. A braided blade in which the material is further mechanically braided, or a ribbon blade in which a metal plate is cut into a strip and knitted into a bamboo basket is used. These blades protect the corrugated pipe against the internal fluid pressure applied to the corrugated pipe, and also reinforce the strength against various external pressures and impacts.

Further, the connecting portions 16 provided at both ends of the hose main body 15 are all made of cap nuts, and are attached to both ends of the hose main body 15 by flaring.

The flexible tube 9 is not limited to the one according to the above embodiment, but has flexibility, heat resistance, pressure resistance, and weather resistance, and connection portions 16 are provided at both ends. Any structure and shape may be used as long as it is used. For example, the flexible tube 9 may be a flexible metal hose without a blade. The hose body 9 of the flexible tube 9 is not limited to a metal hose, and may be a synthetic resin hose or tube having heat resistance, pressure resistance, and the like. Further, the connecting portion 16 of the flexible pipe 9 is not limited to the cap nut, and may be a union joint, a flange, or other joint.

The fire hydrant valve 6 is provided with a valve box, a bonnet, a valve body, a valve rod, a handle, and the like, and the valve rod and the valve body move by rotation of the handle and the valve body, and the valve body is provided. Is configured to open and close the flow path in the valve box by seating on or away from the valve seat formed in the valve box.

In the present embodiment, the fire hydrant valve 6 is a manual type angle valve with a pump start switch. If the water source is a gravity-pressurized water source, a manual angle valve that does not have a pump start switch is used.

Then, the fire hydrant valve 6 has an inlet of the fire hydrant valve 6 at one end of the flexible pipe 9 via a socket 17, a fire hydrant valve joint portion 18a and a flexible pipe joint portion 18b provided on the flange-shaped mounting plate 10. It is provided at one end of the flexible pipe 9 by connecting the flexible pipes in a communicating manner.

The socket 17 is screwed to one connection portion 16 (cap nut) of the flexible pipe 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 of a metal plate in a rectangular shape larger than the fire hydrant valve insertion hole 1a of the back box 1A, and is compatible with the fire hydrant valve joint portion 18a for connecting the fire hydrant valve 6. It is provided with a flexible pipe joint portion 18b for connecting one end portion of the flexible pipe 9.

That is, a different diameter nipple 18 having tapered male threads formed on the outer peripheral surfaces of both ends is inserted through the center of the flange-shaped mounting plate 10, and the different diameter nipple 18 is the flange-shaped mounting 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). ).

Further, in the flange-shaped mounting plate 10, a plurality of bolts 13a (1b) formed in the back box 1A and a plurality of bolt insertion holes 12b formed in the cover plate 12 to be described later are inserted into the flange-shaped mounting plate 10. The male screw) is erected and fixed (see FIG. 6). These bolts 13a (male threads) 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 are fixed from the outside of the back box 1A. It is designed to be inserted into the bolt insertion hole 12b of the above (see FIG. 7). A nut 13b (female screw) is screwed onto the bolt 13a (male screw) inserted through the flange-shaped mounting plate 10.

Then, the flange-shaped mounting plate 10 is fixed in the vicinity of the fire hydrant valve 6 (a 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 portion 18a for the fire hydrant valve of the different diameter nipple 18. Further, the socket 17 provided at one end of the flexible pipe 9 is screwed into the flexible pipe joint portion 18b of the different diameter nipple 18 to be connected to one end of the flexible pipe 9.

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

Further, 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 another shape. 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 screws) 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 erected and fixed to the flange-shaped mounting plate 10. Nut 13b (female screw) may be fixed by welding. In this case, each nut (female screw) 13b has a flange-shaped 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 the nut 13b (female screw) and screwed.

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

Further, in the present embodiment, the fire hydrant valve joint portion 18a and the flexible pipe 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, but other embodiments In the above, 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 the form of a female adapter, or the fire hydrant valve joint portion 18a and the flexible pipe joint portion may be formed. Both 18b may be formed in the form of a female adapter.

The joint portion 11 provided at the other end of the flexible pipe 9 connects the other end of the flexible pipe 9 to the branch joint 8 provided in the vertical pipe 7. In the present embodiment, the joint portion 11 uses a nipple having tapered male threads formed on the outer peripheral surfaces of both ends, and one end of the nipple is provided at the other end of the flexible pipe 9. It is screwed to 16 (cap nut), 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 a fire hydrant valve 6 (in this embodiment, the cover plate 12 is formed). A semicircular notch 12a is formed so as to sandwich the different diameter nipple 18) from both sides (see FIGS. 4 and 7).

Further, 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 the present embodiment, the fire 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 fire hydrant valve insertion hole 1a is rectangular. 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).

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

Next, a method of constructing fire extinguishing equipment using the above-mentioned piping unit for fire extinguishing equipment will be described. The construction procedures shown in (1) to (7) below show an example of installation work, piping work, etc. of the fire hydrant storage box 1.

(1) Install the vertical pipe 7 (water supply pipe). At this time, a branch joint 8 (cheese pipe) for branching and connecting the flexible pipe 9 or the horizontal pulling pipe (not shown) of the fire extinguishing equipment piping unit is attached to the vertical pipe 7.
(2) Install the horizontal pulling pipe up to the vicinity of the fire hydrant storage box 1 (behind or beside the fire hydrant storage box 1), and attach an elbow or socket to the end of the horizontal pulling pipe. If the fire hydrant storage box 1 is close to the vertical pipe 7, the horizontal pipe is not installed.
(3) The joint portion 11 of the flexible pipe 9 of the fire extinguishing equipment piping unit is connected to the branch joint 8 of the vertical pipe 7 (or the horizontal pulling pipe constructed up to the vicinity of the fire extinguishing plug storage box 1) (see FIG. 4). At this time, the fire extinguishing plug valve 6 is attached to the flange-shaped mounting plate 10 provided at the tip of the flexible pipe 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 pull pipe, and the flexible pipe 9) with water, and apply a predetermined pressure. Perform a water pressure test (test water pressure is 1.5 MPa) and check for water leakage from the pipe connection and fire hydrant valve connection.
(5) Install the back box 1A of the fire hydrant storage box 1. At this time, depending on the work situation at the site, the fire extinguishing equipment piping unit is attached to the back box 1A in advance and then the back box 1A is installed, or the back box 1A is installed and then the fire extinguishing equipment piping unit is attached to the back box 1A. Attach to.
The procedure for attaching the fire extinguishing equipment piping unit to the back box 1A is as follows (5-1) to (5 -3).
(5-1) First, the fire hydrant valve 6 of the fire extinguishing equipment piping unit is made to face the fire hydrant valve insertion hole 1a from the back side of the back box 1A (see FIG. 7A).
(5-2) Next, insert the fire hydrant valve 6 into the fire hydrant valve insertion hole 1a of the back box 1A, align the hose connection base (outlet) of the fire hydrant valve 6 in a predetermined direction, and attach it in a flange shape. A plurality of bolts 13a (male screws) erected and fixed to the plate 10 are inserted into the plurality of bolt insertion holes 1b formed in the back box 1A, respectively, and the flange-shaped mounting plate 10 is brought into contact with the back surface of the back box 1A. (See Fig. 7 (B))
(5-3) After that, the pair of cover plates 12 divided into two are covered from the inner surface side of the back box 1A with the different diameter nipples 18 connected to the fire hydrant valve 6 sandwiched from both sides to cover the fire hydrant valve insertion hole 1a. At the same time, a plurality of bolts 13a (male screws) erected and fixed to the fringe-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 each bolt 13a (male screw). The flag-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 are sandwiched and fixed (see FIG. 7C).
(6) After the installation of the back box 1A of the fire hydrant storage box 1 is completed, the wall surface on which the back box 1A is installed is finished (base board pasting, cloth pasting, painting, etc.).
(7) Attach the door frame 1B provided with the fire hydrant door 1C to the back box 1A.

As described above, according to the method of constructing the fire extinguishing equipment using the above-mentioned piping unit for the fire extinguishing equipment, the following excellent effects can be obtained.
(1) Since a fire extinguishing equipment piping unit equipped with a flexible pipe 9 and a fire hydrant valve 6 is used, all the piping from the vertical pipe 7 to the fire hydrant valve 6 when installing the fire hydrant storage box 1 is used. It will be completed. As a result, the water pressure test after the completion of the piping work can be performed only once before finishing the wall surface (before attaching the base board). Even if a leak is found in the pipe, it can be easily repaired because the pipe is not hidden by the base board.
(2) Since the water pressure test only needs to be performed once, the work of draining water in the pipe becomes unnecessary, and the time and cost required for draining water in the pipe can be reduced.
(3) Since the piping unit for fire extinguishing equipment is provided with a flexible pipe 9, even if the installation position of the fire hydrant storage box 1 is changed back and forth due to the front and back of the finished position of the wall, a problem arises. It can be easily dealt with without tampering, and the time and cost required for the work of replacing the protruding pipes can be reduced.
(4) The fire hydrant valve 6 of the fire extinguishing equipment piping unit is inserted into the fire hydrant valve insertion hole 1a formed in the back box 1A, and the flange-shaped mounting plate 10 fixed in the vicinity of the fire hydrant valve 6 is screwed 13 (bolts 13a and). Since it is fixed to the back box 1A by the nut 13b), the protruding dimension of the fire hydrant valve 6 protruding into the back box 1A is constant. As a result, interference between the fire hydrant valve 6 and the fire hydrant door 1C can be prevented unless the depth dimension of the fire hydrant storage box 1 is reduced by removing the front edge portion of the back box 1A. In addition, since the door frame 1B can be attached according to the original size, it is possible to reduce the time and cost when it is necessary to change the design.
(5) When the flange-shaped mounting plate 10 is fixed 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. Will be excellent. Further, since the bolt 13a (male) is erected and fixed to the flange-shaped mounting plate 10 in advance, the mounting work of the mounting plate 10 and the mounting work of the cover plate 12 can be performed quickly.
(6) Since the piping unit for fire extinguishing equipment is equipped with a flexible pipe 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 shifts vertically or horizontally from the initial position, the fire extinguishing equipment piping unit can follow the fire hydrant valve insertion hole 1a. As for the piping unit for fire extinguishing equipment, 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 what position). For example, even if the position is changed from the initial position to a position away from the initial position), it will be possible to deal with it without causing any problems.
(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 becomes unnecessary, the piping work can be simplified, the work time is shortened, and the cost is reduced. In addition, uniform quality can be maintained without the need for operator experience or skill. In addition, since the number of places that cause water leakage is smaller than that of conventional piping that uses elbows, etc., it is possible to easily identify the water leakage point during the water pressure test, shortening the work time and reducing 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-to-operate No. 1 fire hydrant of the indoor fire hydrant equipment, but in other embodiments, the present invention is applied to the No. 1 fire hydrant, the No. 2 fire hydrant or a wide range of the indoor fire hydrant equipment. It may be applied to a type 2 fire hydrant, or the present invention may be applied to a sprinkle facility equipped with an auxiliary sprinkler.

Further, in the above embodiment, the socket 17 is connected to the connection portion 16 (cap nut) provided at one end of the flexible pipe 9 of the fire extinguishing equipment piping unit, but in other embodiments, FIG. As shown, the nipple 19 and the elbow 20 are sequentially connected to the connection portion 16 (cap nut) provided at one end of the flexible pipe 9 of the fire extinguishing equipment piping unit, and the flexible pipe 9 is parallel to the back plate of the back box 1A. Or, as shown in FIG. 9, the nipple 19 and the socket 21 are sequentially connected to the connection portion 16 (cap nut) provided at one end of the flexible pipe 9 of the fire extinguishing equipment piping unit. You can do it.

Further, in the above embodiment, the socket 17 is connected to the connection portion 16 (cap nut) provided at one end of the flexible pipe 9 of the fire extinguishing equipment piping unit, and the socket 17 is connected to the flange-shaped mounting plate 10. Although it is connected to the flexible pipe joint portion 18b, in other embodiments, the socket 17 is omitted, and the connecting portion 16 (cap nut) provided at one end of the flexible pipe 9 is attached to a flange-shaped mounting plate. It may be directly connected to the flexible pipe joint portion 18b of 10.

Further, in the above embodiment, a fire 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 fire hydrant equipment piping unit is mounted from the rear side of the back box 1A to the back box. Although it is pulled out into 1A, in another embodiment, a fire 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 hydrant equipment piping unit is connected to the back box 1A. It may be pulled out from the side of the back box 1A.

Further, in the above embodiment, the fire hydrant valve 6 is fixed to the back box 1A of the fire hydrant storage box 1 via a flange-shaped mounting plate 10, but in other embodiments, a piping unit for fire extinguishing equipment is used. 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 intermediary metal fitting or a joint-shaped one for the back box 1A of the fire hydrant storage box 1.

Further, 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), but in other embodiments. , 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 fire hydrant valve insertion hole 6 is a fire hydrant valve 7 is a vertical pipe (water supply pipe)
8 is a branch joint 9 is a flexible pipe 10 is a flange-shaped mounting plate 11 is a joint part 12 is a cover plate 13 is a screw 18a is a fire hydrant valve joint part 18b is a flexible pipe joint part

Claims (14)

A process of connecting a joint provided at the other end of a flexible pipe having a fire hydrant valve at one end to a branch joint provided in a water supply pipe installed inside the building wall.
A method for constructing fire extinguishing equipment, which comprises a step of inserting the fire hydrant valve into a hole for inserting the fire hydrant valve formed in the back box of the fire hydrant storage box and fixing the fire hydrant valve to the back box. After the step of connecting the joint portion provided at the other end of the flexible pipe provided with the fire hydrant valve at one end to the branch joint provided in the water supply pipe piped inside the building wall.
A process in which the water pressure test of the pipe is performed once and then the drainage work in the pipe is not performed, and
The method for constructing fire extinguishing equipment according to claim 1, which comprises. The flexible pipe is provided with a flange-shaped mounting plate fixed in the vicinity of the fire hydrant valve, and the fire hydrant valve is inserted into the fire hydrant valve insertion hole having an opening area smaller than that of the mounting plate, and the mounting plate is inserted. The method for constructing fire extinguishing equipment according to claim 1 or 2, which comprises a step of fixing to the back box. The method for constructing fire extinguishing equipment according to claim 3, wherein the mounting plate and the back box are fixed with screws. Claims 1 to 4 further include a step of fixing a pair of cover plates that cover the fire hydrant valve insertion hole from the inside of the fire hydrant storage box to the back box so as to sandwich a portion connected to the fire hydrant valve from both sides. Construction method of fire extinguishing equipment described in any of. A flexible pipe, a fire hydrant valve provided at one end of the flexible pipe, 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 pipe. A fire hydrant storage box in which the fire hydrant valve can be inserted and a fire hydrant valve insertion hole having an opening area smaller than that of the mounting plate is formed in the back box is provided.
The fire hydrant valve is inserted into the fire hydrant valve insertion hole, and the mounting plate is fixed to the back box.
A fire extinguishing system characterized in that the joint portion is connected to a branch joint provided in a water supply pipe piped inside a building wall. The fire extinguishing system according to claim 6, further comprising a screw for fixing the mounting plate and the back box. The claim is characterized in that a pair of cover plates are fixed to the back box so as to sandwich a portion connected to the fire hydrant valve from both sides and cover the fire hydrant valve insertion hole from the inside of the fire hydrant storage 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 portion for a fire hydrant valve for connecting the fire hydrant valve. The fire extinguishing system according to any one of claims 6 to 9, wherein the mounting plate includes a joint portion for a flexible pipe for connecting the flexible pipe. A flexible pipe, a fire hydrant valve provided at one end of the flexible pipe, 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 pipe. A piping unit for fire extinguishing equipment, which is characterized by being equipped with. The piping unit for fire extinguishing equipment according to claim 11, wherein the mounting plate is provided with screws. The piping unit for fire extinguishing equipment according to claim 11 or 12, wherein the mounting plate includes a joint portion for a fire hydrant valve for connecting the fire hydrant valve. The piping unit for fire extinguishing equipment according to any one of claims 11 to 13, wherein the mounting plate includes a joint portion for a flexible pipe for connecting the flexible pipe.

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