JPH1025775A - Connecting water transmission facilities - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide water transmission facilities which can be set up easily, extremely in a short time. SOLUTION: Connecting water transmission facilities are provided with a valve unit mechanism section 1 interposed in a specified location of a water transmission system and a housing case 2 of the valve unit mechanism section 1. A drain valve unit 10 provided with a drain valve 21 on the upstream side and the downstream side of a water flow and a drain unit 11 provided with a drain section 29 are laid out respectively on the valve unit mechanism section 1 while the drain valve unit 10 and the drain unit 11 are arranged to bins each of their flanges 18 and 27 with connection members 42 and 43 and connected in a fixedly clamping state of a check valve unit 9. The housing case 2 is formed so that an insertion section 29 of a piping system of the valve unit mechanism section 1 may be provided on the opposed side surfaces of a case main body 33. The upper end opening of the case main body 33 is covered with a cover 3 so that it may be opened freely.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention mainly relates to a backflow of water in a water supply piping system which is interposed at a required position in a water supply piping system for supplying fire extinguishing water to a fire extinguishing system for a building such as a building. The present invention relates to a connected water pipe system having functions such as prevention, air removal, and temporary drainage.

[0002]

2. Description of the Related Art Generally, a firefighting facility for extinguishing a fire at an early stage when a fire starts is installed in a high-rise building. In other words, a water storage tank for storing fire extinguishing water at all times is installed on the roof of the building.
When a fire breaks out on more than one floor, the fire extinguishing water in the water storage tank is discharged from the water discharge hose provided for each floor so that the fire can be extinguished in the early stage of the fire. When replenishing water to the water storage tank, connect the water discharge hose of a fire pump car to the water outlet of a water pipe (generally referred to as a water outlet) that is set up outdoors, and activate the fire pump to activate the building. Water is supplied to the water storage tank through the water supply piping system inside. In addition, the above-mentioned water supply piping system is branched to each floor and connected to water discharge equipment provided with a water discharge hose or the like, respectively. Fire extinguishing water can be supplied to the water discharge facility on the required floor through the facility.

[0003] It is required by standards that the above-mentioned water supply piping system be provided with a connection water supply pipe facility. The connecting water supply pipe system includes a check valve and two drain valves disposed upstream and downstream of the check valve, respectively. It is configured to be housed in a box. The check valve prevents the water in the water storage tank from flowing back toward the water supply port. The upstream drain valve is opened after the supply of water to the water storage tank or after the end of the fire fighting operation, and releases air mixed in the pipe on the upstream side to the check valve to reduce the pressure in the pipe. The purpose is to prevent the connection fitting attached to the water supply port from being difficult to remove due to the generation of negative pressure in the pipe. On the other hand, the downstream drain valve is opened, for example, when performing construction of a water discharge facility inside the building, and is used to drain water or air remaining in the pipe upstream of the check valve.

[0004]

However, installation of the conventional connected water supply pipe system has a problem that it takes complicated and time-consuming work and takes too much construction time. That is, first, a place to be installed is excavated to form an installation recess having a required shape, and then a peripheral wall formed of a concrete block wall or a concrete wall is formed along the inner peripheral surface of the installation recess. In building the box, it takes time to stack concrete blocks or to assemble a form for injecting concrete milk, and in each case, to form a concrete milk box. I have to wait for the drying.

Further, when assembling the two drain valves, the pipe is cut in accordance with the dimensions of the outer body box made as described above, and connecting flanges are fixed to both ends of the pipe by welding. Further, a mounting hole is formed in a side portion of the pipe, a socket is fixed to the mounting hole by welding, and a drain valve is connected to the socket. The two drain valve mounting blocks thus produced are united by connecting the respective flanges to each other with a check valve interposed therebetween. Therefore, since necessary parts are assembled and assembled at the construction site, complicated operations such as adjustment of necessary parts and dimensional adjustment are required. In addition, an outer body case is constructed in advance, and each part is assembled. Therefore, work with poor workability in a narrow space is forced, and the work time is inevitably long. In addition, if necessary parts are missing or defective at the site, construction troubles occur. As described above, when the operation time is long, the installation cost increases as the number of operation steps increases.

Accordingly, an object of the present invention is to provide a connected water supply piping system which can be easily installed in an extremely short time.

[0007]

In order to achieve the above object, the present invention relates to a connecting water supply piping system, comprising: a valve unit mechanism provided at a predetermined position of a water supply piping system; A housing case, and the valve unit mechanism section is provided with a check valve unit installed in a direction to prevent backflow of water to the water supply source side, and from a side of the water supply short pipe having a connecting flange at both ends. A drain valve is provided by branching, and a drain valve unit disposed on the water supply source side with respect to the check valve unit, and a drain portion branched from one side of a water supply short pipe having connecting flanges at both ends. A drain unit disposed on the side of the water supply destination with respect to the check valve unit, and the drain valve unit and the drain unit are each disposed with the check valve unit interposed therebetween. Through the connecting member of the flange The housing case is provided with an insertion portion for piping of the valve unit mechanism on the opposite side surface of the case body, and an upper end opening of the case body is opened and closed by a lid. It has a covered configuration.

When installing the above-mentioned connecting water supply piping equipment,
First, a place to be installed is excavated to form an installation recess corresponding to the shape of the storage case. Next, after the check valve unit is interposed between the drain valve unit and the drain unit, the flanges on the opposite sides of each of the drain valve unit and the drain unit are connected to each other by a connecting member including, for example, a bolt and a nut. When connected, the check valve unit is sandwiched and fixed between the drain valve unit and the drain unit, thereby forming a valve unit mechanism that connects the three members to each other. The valve unit mechanism thus assembled in advance is inserted into the installation recess, and connected to the upstream and downstream connection ends of the water supply pipe via the flanges at both ends.

In this connecting water pipe system, if a check valve unit, a drain valve unit and a drain unit having different dimensions are manufactured in advance as standard products, a check valve unit having a size corresponding to the installation site can be obtained. The valve unit mechanism can be assembled simply by selecting the drain valve unit and the drain unit and screwing them together. Further, the valve unit mechanism can be housed in a housing case which is manufactured in advance as a standard. Therefore, it is possible to easily and reliably install the connection water supply piping equipment in a very short time.

In a preferred embodiment of the present invention, the housing case is formed with a slot-like notch extending upward from the lower end on the opposite side surface of the cylindrical case body having both ends opened. The valve unit mechanism is provided at a predetermined position of the water supply piping system, and the piping at both ends thereof is inserted into the cutout so as to cover from above.

Thus, after the valve unit mechanism is inserted into the installation recess and connected to the water supply piping system, the housing case is inserted into the cutouts on both sides thereof while the pipes at both ends of the valve unit mechanism are inserted. It can be installed so as to cover the valve unit mechanism from above. Therefore, the connection work of the valve unit mechanism is further facilitated with good workability in a wide space.

[0012]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will be described below with reference to the drawings. FIG. 1 shows a connection water supply piping system according to one embodiment of the present invention, and (a)
Is a partially broken plan view, and (b) is a longitudinal sectional view thereof.
In this figure, the connection water supply piping system includes a valve unit mechanism 1, a housing case 2 of the valve unit mechanism 1,
And a cover 3 covering the upper end opening of the storage case 2. The valve unit mechanism 1 is provided at a predetermined position of a water supply pipe system for supplying fire-extinguishing water from a water supply port 4 shown in FIG. 2 to a water storage tank (not shown) installed on the roof of a building. It is inserted and connected between the upstream pipe section 7 on the water supply port 4 side and the downstream pipe section 8 on the water storage tank side.

The valve unit mechanism 1 has a check valve unit 9 disposed at the center thereof in such a direction as to prevent backflow of water to the upstream side, and a drain valve unit 1 is disposed upstream of the check valve unit 9.
0 is connected, and a drain unit 11 and a water stop valve unit 12 are connected to each other downstream of the check valve unit 9.

FIG. 2 is an exploded perspective view of the valve unit mechanism 1. As shown in FIG. In the figure, the check valve unit 9 is the check valve 1
3 is provided with an opening / closing operation section 14 for manually operating 3. The drain valve unit 10 has connecting flanges 18 at both ends.
And a plurality of (eight in this embodiment) mounting holes 19 are arranged at equal intervals in each connecting flange 18. . On one side of the water supply short pipe 17, a socket 2 having a screw formed on the inner surface
0 is fixedly connected to the short water supply pipe 17, and a drain valve 21 having an opening / closing operation unit 22 is connected to the socket 20 by a screw connection via a connection pipe 23.

The drain unit 11 includes a drain valve unit 10
In the same manner as described above, the water supply short pipe 24 having a predetermined length integrally provided with a connecting flange 27 at each end is provided, and each connecting flange 27 is provided with a plurality (eight in this embodiment).
Are provided at equal intervals. Water supply short pipe 24
On one side surface, a socket 29 having a screw formed on the inner surface is fixedly connected to the short water supply pipe 24, and this socket 29 is closed by a plug 30 which is screwed. It should be noted that a drain valve can be attached to the socket 29 via a connecting pipe, similarly to the drain valve unit 10, instead of the plug 30.

The water shutoff valve unit 12 includes a water shutoff valve 31 composed of, for example, a butterfly valve, and a handle 32 for opening and closing the water shutoff valve.

FIG. 3 is a perspective view showing the external shape of the storage case 2. In FIG.
Reference numeral 3 denotes a rectangular tube having a rectangular cross section with open upper and lower ends, and an upper end opening for supporting the lid 3 on an inner peripheral portion thereof as shown in FIG. Step 3
4 is formed to bulge outward, a mounting frame portion 37 protruding inward from an inner peripheral edge thereof is integrally formed at a lower end opening portion, and a reinforcing band portion 38 is formed outward from a central outer peripheral surface. Bulges are formed. Further, on both side surfaces in the longitudinal direction of the case main body 33, a long hole-shaped notch 39 for inserting the upstream and downstream pipe portions 7, 8 is formed so as to extend upward from the lower end. The lid 3 detachably mounted on the step portion 34 is made of, for example, a striped steel plate, and a drop handle 4 for detaching operation is provided on both sides of the upper surface in the longitudinal direction.
0 is provided.

Next, a description will be given of a procedure for constructing the above-mentioned connecting water pipe system. First, for example, a soil is excavated at a required installation location outdoors of a building such as a building, and an installation recess having a shape capable of burying the storage case 2 is provided. This installation recess is provided in the same manner as in the conventional construction.

Subsequently, the valve unit mechanism 1 is assembled. That is, the drain valve 21 is provided on both sides of the check valve unit 9.
The drain valve unit 10 and the drain unit 11 whose socket 29 is closed by the plug 30 are disposed with packing 41 interposed therebetween, and the drain valve unit 10 and the drain unit 11 each have one of the opposed connection flanges. The two ends of the screw shaft 42 having screw grooves on both sides are attached to the mounting holes 19 and 28 of the connecting flanges 18 and 27 on both sides so that the check valve unit 9 is sandwiched between the two.
After that, the nut 43 is screwed into the screw grooves at both ends of the screw shaft 42 and fastened. When the screw shafts 42 are inserted through all the mounting holes 19 and 28 of the connecting flanges 18 and 27, and the nuts 43 are screwed and fastened to the respective screw shafts 42, the check valve unit 9 and the drain valve unit 10 Drainage unit 1
The valve unit 1 is sandwiched and fixed between the valve unit 1 and the valve unit 1 to connect the three units 9 to 11 to each other in a communicating state. The connection of the water stop valve unit 12 will be described later, but the water stop valve unit 12 is not always necessary.

The valve unit mechanism 1 can be assembled in advance before being brought to the construction site. Here, the check valve unit 9 and the drain valve unit 1
0, two or three types of drain units 11 and stop valve units 12 having different dimensions are manufactured as standard products, respectively, and two or three types of valve unit mechanism units 1 having different external dimensions are prepared. For example, the valve unit mechanism 1 according to the situation at the construction site can be appropriately selected and brought in. The housing case 2 according to the valve unit mechanism 1
It is preferable that two or three types are prepared as standard products.

As shown in FIG. 2, male threads are formed on the outer peripheral surfaces of the ends of the upstream and downstream piping portions 7 and 8 facing the installation recess. These two pipes 7,
8, female screws formed on the inner peripheral surfaces of the ring-shaped flange members 44, 47 are screwed together, and the flange members 44, 47 are fixed to the ends of the upstream and downstream pipe portions 7, 8, respectively. Keep it.

Thereafter, as described above, each of the units 9 to
11 is inserted into the installation recess, and the other flange 18 of the drain valve unit 10 is overlapped with the flange member 44 of the upstream piping section 7 via the packing 50. . At this time, the flange 18
The mounting holes 19 of the packing 50 are matched with the mounting holes 51 of the packing member 50 and the mounting holes 48 of the flange member 44, respectively, and bolts 52 are inserted through the mounting holes 19, 51, and 48 from the flange 18 side. By screwing and tightening the nut 43, the upstream side of the valve unit mechanism 1 is connected to the upstream pipe 7.

On the other hand, the downstream side of the valve unit mechanism 1 is connected to the downstream pipe 8 as follows. That is, the water stop valve 31 of the water stop valve unit 12 is disposed between the other flange 27 of the drain unit 11 and the flange member 47, and the mounting hole 28 of the flange 27 and the flange member 4 are disposed.
7 is matched with the mounting hole 49. These mounting holes 28, 4
9 through the bolt 52 from the flange member 47 side,
By screwing and fastening a nut 43 to the bolt 52, the water shutoff valve unit 1
2 is connected to the downstream-side piping section 8 while being clamped and fixed.

When the connection of the valve unit mechanism 1 has been completed, the housing case 2 is inserted into the notches 39 on both sides of the housing unit 2 while the pipe units 7, 8 on both sides of the connection of the valve unit mechanism 1 are inserted. It is installed inside the installation recess so as to cover part 1 from above. Here, the storage case 2 is buried so as to be substantially flush with the installation floor surface 53 shown by a two-dot chain line in FIG. 1B, and only the lid 3 is exposed on the installation floor surface 53. The cover plate 3 may be buried in a state where the cover plate 3 is flush with the installation floor surface 53.

As described above, the above-mentioned connecting water pipe system is provided with a check valve unit 9 and a drain valve unit 1 each having a size corresponding to an installation site among a plurality of types manufactured as standard products.
The valve unit mechanism unit 1 can be assembled only by selecting the drain unit 11 and the drain unit 11 and screwing them together. The valve unit mechanism unit 1 is inserted into the installation recess excavated at the installation site, and the upstream side and the drain unit 11 are inserted. It can be assembled simply by connecting to the downstream pipe sections 7, 8. Moreover, after the valve unit mechanism 1 is connected to the pipes 7 and 8, the housing case 2 can be installed so as to cover it from above, so that the valve unit mechanism 1 can be connected with good workability in a wide space. Can be. Accordingly, the connection water supply piping equipment can be easily and reliably installed in a very short time.

In the connected water pipe system installed as described above, the check valve 13 and the drain valve 21 are normally closed, the water stop valve 31 is open, and the socket of the drain unit 11 is normally operated. 29 is used with the plug 30 closed.

When the fire extinguishing water is supplied to the water storage tank or the water discharge facility inside the building, the closing fitting 57 of the water supply pipe 4 shown in FIG.
Connect the water hose of the fire pump car to 4 and operate the fire pump. Thereby, the fire extinguishing water is supplied from the water discharge hose through the water supply port 4, the upstream pipe section 7, the valve unit mechanism section 1, and the downstream pipe section 8. At this time, the fire extinguishing water passes through the check valve 13 in the closed state due to the supply water pressure.

When the supply of fire-extinguishing water to the water storage tank or the fire-extinguishing activity ends, the lid 3 is pulled up to open the upper end opening of the storage case 2 and then the drain valve unit 11 is opened.
Is manually operated to open the drain valve 21. Thereby, the water remaining on the downstream side of the check valve unit 9 and the air mixed in the piping system are discharged to the outside, and the pressure in the pipe on the downstream side of the check valve unit 9 decreases. At this time, the fire extinguishing water on the upstream side of the check valve unit 9 is prevented from flowing backward by the check valve 13.

As a result, the water discharge hose is connected to the water supply port 54.
It can be easily removed from. If the pressure in the pipe is not released, the pressure in the pipe becomes negative and it becomes difficult to remove the water discharge hose.

For example, when construction work such as a water discharge facility in a building is performed, the plug 30 of the drain unit 11 is removed, and water or air remaining in the downstream pipe is discharged from the socket 29 to the outside. On the other hand, when disassembling the valve unit mechanism section 1 or the upstream pipe section 7, the handle 32 of the water stop valve unit 12 is rotated to close the water stop valve 31. Thereby, the backflow of water downstream of the water stop valve 31 can be prevented.

Further, a configuration as shown in a partially broken plan view shown in FIG. 4 can be adopted. That is, the storage case 2
Is formed in a size having approximately twice the volume of that of the above-described embodiment, and two valve unit mechanisms 1 similar to the above are housed in this housing case 2 in a side-by-side state. .
One valve unit mechanism 1 is provided with a water supply port 4 as described above.
Are connected to the upstream pipe section 7 communicating with the water supply port section 54 and the downstream pipe section 8 communicating with the water storage tank, respectively. The other valve unit mechanism 1 includes a second water supply port 60 of the water supply port 4.
And a pipe portion 59 communicating with a sprinkler provided on the ceiling of each floor of the building. As a result, the connected water pipe system can be used both for fire extinguishing and for sprinklers.

[0032]

As described above, according to the connecting water pipe system of the present invention, the valve unit mechanism is assembled simply by connecting the check valve unit, the drain valve unit and the drain unit as standard products by screw connection or the like. In addition, since the valve unit mechanism is covered with a storage case manufactured as a standard product, it can be easily and reliably installed in an extremely short time.

Further, in the present invention, if the housing case has a configuration in which a slot-like notch extending upward from the lower end is formed on the opposing side surface of the cylindrical case main body having both ends opened, the housing case is provided with a water supply pipe. The valve unit mechanism connected to the system can be installed so that it can be placed from above while inserting the piping on both sides into the notch, so that the connection work of the valve unit mechanism can be made easier with improved workability. There is.

[Brief description of the drawings]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 shows a connection water supply piping system according to an embodiment of the present invention, wherein (a) is a partially broken plan view and (b) is a longitudinal sectional view.

FIG. 2 is an exploded perspective view of a valve unit mechanism in the facility.

FIG. 3 is a perspective view of a storage case in the equipment.

FIG. 4 is a partially broken plan view showing a connecting water pipe device according to another embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Valve unit mechanism part 2 Storage case 3 Lid 9 Check valve unit 10 Drain valve unit 11 Drain unit 17 Water supply short pipe of drain valve unit 18 Flange for connection of drain valve unit 21 Drain valve 24 Water short pipe of drain unit 27 Drainage unit connection flange 29 Socket (drainage part) 33 Case body 39 Notch 42 Screw shaft (connection member) 43 Nut (connection member)

Claims (2)

[Claims] 1. A valve unit mechanism provided at a predetermined position of a water supply piping system, and a housing case for the valve unit mechanism, wherein the valve unit mechanism is configured to flow backward of water to a water supply source side. A check valve unit arranged in a direction to prevent the water supply, and a drain valve branched from the side of the short water pipe having a connecting flange at both ends, provided on the water supply side with respect to the check valve unit. And a drainage unit provided with a drainage portion that branches off from one side of a water supply short pipe having connecting flanges at both ends and provided on the water supply destination side with respect to the check valve unit. And the drainage valve unit and the drainage unit are connected by mutual connection via a connection member of each of the flanges with the check valve unit interposed therebetween. Case body Insertion portion of the piping of the valve unit mechanism portion is formed on opposing sides, connecting water pipes amenities top opening of the case body is characterized by comprising a lidding freely opened and closed by the lid. 2. The storage case is formed with a slot-like notch extending upward from a lower end on an opposite side surface of a cylindrical case main body that is open at both ends. 2. The connection water pipe system according to claim 1, wherein a pipe unit at both ends thereof is inserted into the notch so as to cover the valve unit mechanism section interposed at the location from above, and the water supply pipe facility is connected to the valve unit mechanism section. 3.