JP2007146917A - Connected water supplying pipe equipment - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a connected water supplying pipe equipment in which the length of a length adjustable pipe section can be adjusted easily on the construction site in accordance with a distance between water feeding pipes of a water supplying piping system for supplying high-pressure water for fire-fighting from water supply ports so that the connecting work can be performed rapidly and securely, which is excellent in constructability, which is easy to disassemble in case of maintenance and inspection, which enables replacement work of parts to be performed surely and without difficulty, and which is simplified in structure so as to be produced and assembled easily, thereby reducing the production cost and the construction cost. <P>SOLUTION: In the connected water supplying pipe equipment, a check valve A' and a water stop valve B are arranged in a pipe line extending between and connected to the primary-side and secondary-side water feeding pipes 1, 1' of the water supplying piping system P for supplying the water W for fire-fighting from the water supply ports J, J, and a drain valve C is provided on the primary side or/and the secondary-side with respect to the check valve. A receiving pipe 3 and an insertion pipe 4 one end of which is slidably inserted into the receiving pipe, constitute the length adjustable pipe section 2 the length of which can be adjusted in accordance with the distance L between the water feeding pipes 1, 1'. A check valve unit A is provided within the length adjustable pipe section. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a connected water pipe facility, for example, fire extinguishing water by driving a pump of a fire pump car from a water outlet provided outside a building in a fire extinguishing facility provided for each floor in a building such as a building or an apartment. To adjust the length of the length adjustment pipe section on the construction site by simple handling operation according to the length of laying between the water supply pipes of different water supply pipe systems for each building To improve the efficiency of connection work to the water supply piping, and to easily replace and remove parts such as check valves and stop valves, and O-rings, etc., and to improve maintenance and management To do.

  For buildings such as buildings and condominiums, a water supply piping system for supplying fire-fighting water to the building in advance is installed as a facility for initial fire extinguishment at the time of a fire, and fire-fighting water is always stored on the rooftop and underground By providing this water storage tank, it was used for the initial fire extinguishing by the provided water discharge hose stored in the box provided for each level. In addition, even when the fire-fighting water stored in the water storage tank is not enough, the fire-fighting pump can be turned into fire extinguishing equipment such as a discharge nozzle at the desired level through the water supply piping system provided to the building by driving the pump of the fire pump. Firefighting activities are conducted at each level by supplying them.

  In this way, it is obliged that a connected water supply pipe facility be provided in the water supply piping system that is attached to the building and supplies fire-fighting water. Conventionally, for example, a check valve that prevents backflow to a water supply source, a water stop valve that opens and closes a water supply path, and a primary side (inflow side) or a secondary side with respect to the check valve. Some have a drain valve provided on the (outflow side) connected to a water supply piping system and provided in a storage case with a lid. And, the check valve of this connected water pipe equipment is formed in a double pipe structure in which a support cylinder is integrally formed with a short diameter pipe through a radial connecting wall. is doing. In addition, a valve rod attached to one end of the valve body is slidably inserted into the support cylinder, and the disc-shaped valve receives the urging force of a coil spring of the same diameter fitted on the outer periphery of the valve rod. The check valve unit is configured to close the body by pressing the body against a valve seat wall projecting from the inner circumference of the primary side of the short pipe.

  When the pump of the fire fighting pump automobile is driven to supply fire extinguishing water in use and high water pressure is applied from the water supply source, the valve body of the check valve unit resists the urging force of the coil spring. The fire-extinguishing water is sent to the water supply piping system downstream. In addition, when the pump is stopped or the water supply source becomes low pressure, the valve rod slides in the support cylinder by the biasing force of the coil spring, and the valve body is pressed against the valve seat wall of the short pipe and closed. It is intended to prevent the reverse flow of fire-fighting water by being valved.

In addition, the drain valve provided on the primary side with respect to the check valve is opened after the extinguishing operation to inject air to discharge water remaining on the primary side of the water supply piping system. Can do. In addition, the drainage valve provided on the secondary side of the check valve is opened when the water discharge equipment installed inside the building is being constructed, stored, or inspected. On the other hand, there is one that drains water remaining in the secondary side pipe (for example, see Patent Document 1).
Japanese Patent No. 3254182

  However, the location of the water outlet is used to supply fire-fighting water from the water outlet provided outside the building to the water discharge hose stored in the box provided at each level through the water supply pipe attached to the building. , Installation direction, installation length from the water outlet provided outside to the building of the water supply piping system attached to the building, and installation between the water supply piping of the water supply piping system from the water outlet to the building The length is laid in a different state for each building.

  Therefore, the connection water pipe equipment of the above-mentioned structure described in Patent Document 1 includes an upstream short pipe, a short pipe provided with a check valve unit inside, and a water stop valve unit when connecting between water pipes. The short pipe provided inside and the short pipe on the downstream side are connected using a joint. However, when connecting this water pipe connection between water pipes, The total laying length is too long, or conversely, the laying length of the four short pipes is shorter than the length between the water supply pipes. The short pipe provided with the check valve unit inside, the short pipe provided with the water stop valve unit inside, and the downstream short pipe could not be connected correspondingly immediately.

  In addition, adjustment of the laying length of each short pipe between the water supply pipes is indispensable, but in order to make the adjustment, the standard dimension is that each of the four short pipes has different dimensions by several centimeters. Several types are prepared, and from these, four short pipes having a length dimension that matches each building are selected, and these short pipes must be used in combination. It was difficult to select a short tube of one length, resulting in excess and deficiency.

  In addition, the above-mentioned connected water pipe equipment is connected using a saddle-type joint divided into two parts to connect each of the four short pipes as described above, and the connection point is the water pipe on the primary side. And the upstream short pipe, the secondary water supply pipe and the downstream short pipe are connected, and the short pipes are connected to each other at a total of five points. In addition, the split saddle type joint has a large number of parts, and the left and right mounting ends are fastened with bolts and nuts, so it takes a lot of time and effort to connect, The work efficiency of the connection work was poor.

  For this reason, the construction period is long in the conventional connected water pipe equipment, and the check valve unit provided in the short pipe is overloaded with high-pressure fire-fighting water. Since parts such as the body, support cylinder, and coil spring may cause failure due to mechanical fatigue and wear, once they are assembled when replacement with new parts is required, maintenance and inspection at the construction site Disassembly work and replacement work with new parts cannot be easily performed, and a great deal of labor and time are required.

  The present invention solves the drawbacks found in the above-mentioned Patent Document 1, and the length of the length adjusting pipe part is set at the construction site in accordance with the length of the laying length between the water supply pipes of the water supply pipe system that sends fire-extinguishing water from the water supply port. It can be adjusted by simple handling operations to make connection work quickly and reliably, and it has excellent workability.It is easy to disassemble at the time of maintenance and inspection, and can be easily and reliably replaced with new parts. An object of the present invention is to provide a connected water pipe facility that has a simple structure, is easy to manufacture and assemble, and reduces manufacturing costs and construction costs.

This invention is made | formed in view of the said subject, The invention of Claim 1 is
A check valve and a water stop valve are provided in a pipe connected between the water supply pipe on the primary side and the secondary side of the water supply pipe system for sending fire-fighting water from the water supply port, and the primary side or / And a connected water pipe with a drain valve on the secondary side,
A length adjusting pipe whose length can be adjusted according to the length of the laying length between the water supply pipes by means of a pipe to be inserted and an insertion pipe into which one end of the pipe is slidably inserted into the pipe to be inserted. Part
A check valve unit is provided in the length adjusting pipe portion.

  Further, the invention according to claim 2 of the present invention is the invention as set forth in claim 1, wherein the tube to be inserted or the insertion tube is disposed on the outer periphery of the pipe end portion so as to face the water supply pipe on the primary side or / and the secondary side. The primary side or / and the secondary side are fastened by fastening the flange engaging with the provided engagement edge and the flange part provided on the outer periphery of the pipe end of the water supply pipe on the primary side or / and the secondary side with bolts and nuts. It is connected to the water supply pipe on the next side.

  In addition, the invention according to claim 3 of the present invention is the method according to claim 1 or 2, wherein the insertion pipe and the insertion pipe are adjusted in length according to the length of the laying length between the water supply pipes. It is fixed and laid by the fixing means.

  According to a fourth aspect of the present invention, the check valve unit according to any one of the first to third aspects is detachably mounted in a tube end portion on the primary side of the insertion tube. It is characterized by being able to.

  The invention according to claim 5 of the present invention is such that, in any one of claims 1 to 3, the check valve unit is detachable in a tube end portion on the primary side of the inserted tube. It is mounted.

  The invention according to claim 6 of the present invention is the invention according to any one of claims 1 to 4, wherein the check valve unit, the water stop valve, and the drain valve are provided in the insertion pipe. It is characterized by that.

  The invention according to claim 7 of the present invention is the invention according to any one of claims 1 to 3 or claim 5, wherein the check valve unit, the water stop valve, and the drain valve are It is provided in the insertion tube.

In addition, the invention according to claim 8 of the present invention is any one of claims 1 to 7,
The check valve unit is
One end of the tube to be inserted or the tube end portion on the primary side of the insertion tube is detachably attached, and the overall shape is formed into a cylindrical shape having a gradually decreasing diameter from the primary side to the secondary side, and there are a plurality of outer periphery. A valve case provided with a support member having a plurality of flow holes, a plurality of water flow holes at the rear end of the secondary side, and a sliding hole at the center;
A substantially conical cap is formed on the front surface of the valve case so as to be slidable in the axial direction. With the valve body
The valve case is formed in a cylindrical shape having a length that is ½ or less of the axial length of the valve case, and is arranged via an allowance with respect to the valve body, and one end is slidable in the sliding hole. A valve rod having a flange-like attachment portion inserted on the back portion of the support member and provided on the outer periphery of the rear end portion;
A support bolt that is slidably inserted into the valve rod and has a distal end screwed into the valve body to support the valve body so as to be able to contact the valve rod;
A winding that is disposed on the outer periphery of the support bolt and is interposed between the valve body and the support member so that the valve body is always brought into contact with the valve seat portion of the valve case and biased in a closing direction. Springs,
It is provided with.

  The invention according to claim 9 of the present invention is the invention according to any one of claims 1 to 8, wherein the water stop valve is rotatable in the radial direction of either the insertion tube or the insertion tube. A rotating shaft is fitted into the rotating shaft, and a butterfly for opening and closing the insertion tube or the inserted tube is provided on the rotating shaft.

  The invention according to claim 10 of the present invention is the attachment tube according to any one of claims 1 to 9, wherein the drain valve is provided on the outer periphery of the insertion tube or / and the insertion tube. It is attached to the primary side or the secondary side with respect to the check valve unit via a joint member.

  The invention according to claim 11 of the present invention is the invention according to any one of claims 1 to 10, wherein the main fixing means includes a tube end portion and a tube abdominal portion of the tube to be inserted and the insertion tube. A pair of mounting plate portions facing each other, and bolts and nuts for fastening the mounting plate portions to each other, or tube end portions of the insertion tube and the insertion tube and a tube abdomen portion And a welded portion by welding.

  The present invention enables connection work by adjusting the length of the length adjustment pipe section by a simple handling operation at the construction site in accordance with the length of the laying length between the water supply pipes of the water supply pipe system that sends fire extinguishing water from the water supply port. It can be performed quickly and reliably, has excellent workability, is easy to disassemble during maintenance and inspection, and can be easily and reliably replaced with new parts. Furthermore, the structure is simple and the manufacture and assembly are easy, and the manufacturing cost and the construction cost can be reduced.

  Hereinafter, the best mode for carrying out the present invention will be described in detail with reference to the drawings.

  FIG. 1 is a cross-sectional view of a first embodiment of a connected water pipe facility according to the present invention in which the length is adjusted between water pipes of a water pipe system, and is connected with a minimum laying length. FIG. FIG. 3 is a cross-sectional view showing a state in which the connection water pipe facility is connected at the maximum laying length after adjusting the length of the connection water pipe facility of FIG. 1, and FIG. FIG. 4 is a side view showing a state in which the connection is made with the minimum laying length after adjusting the length, and FIG. 4 shows the connection with the maximum laying length after adjusting the length of the connected water pipe equipment of the first embodiment. FIG. 5 is a sectional view taken along the line Q-Q in FIG. 4, FIG. 6 is a sectional view taken along the line RR in FIG. 4, and FIG. 7 is a reverse water valve constituting Embodiment 1 of the connected water pipe system of the present invention. FIG. 8 is a cross-sectional view showing a state in which the valve body of the unit is opened, and FIG. 8 is Embodiment 1 of the connected water pipe equipment of the present invention. Is a circuit diagram showing an example of a state in which laid between the pipe system of the water supply pipe.

  In the first embodiment, a check valve A ′ is installed in a pipe connected between the primary and secondary water supply pipes 1 and 1 ′ of the water supply pipe system P for sending the fire-extinguishing water W from the water supply ports J and J. A connected water supply pipe facility provided with a water stop valve B and provided with a drain valve C on the primary side and / or the secondary side with respect to the check valve A ′. The length adjustment pipe portion whose length can be adjusted according to the length of the laying length L between the water supply pipes 1 and 1 'by the insertion pipe 4 into which one pipe end portion 4a is slidably inserted. 2, and a check valve unit A is provided in the length adjusting pipe portion 2.

  In the first embodiment, as a preferred example, the minimum laying length L1 ′ when the length adjusting pipe portion 2 is not used is 400 to 450 mm, for example, as shown in FIG. Is 100 to 130 mm, and the length L3 of the insertion tube 4 is 250 to 300 mm. This numerical range is a representative example and is not limited thereto.

  In addition, the pipe to be inserted 3 or the insertion pipe 4 is an insertion pipe as shown in the first embodiment among the pipe end portions 3a and 4b facing the water supply pipes 1 and 1 'on the primary side or the secondary side. The pipe end portion 4b includes a flange 5 that engages with an engagement edge 4c provided on the outer periphery of the pipe end portion 4b, and a flange portion 6 provided on the outer periphery of the pipe end portion of the water supply pipe 1 'on the secondary side. Are connected to the secondary side water supply pipe 1 'by tightening them with bolts and nuts 7, and the pipe end 3a of the inserted pipe 3 is connected to a flange 5' provided on the outer periphery of the pipe end 3a. Are connected to the primary side water supply pipe 1 by being fastened by bolts and nuts 7 to the flange portion 6 provided on the outer periphery of the primary side water supply pipe 1.

  3 and FIG. 4, the inserted tube 3 and the inserted tube 4 are used for the main fixing after adjusting the length according to the length L of the laying length L between the water supply pipes 1 and 1 ′. As shown in FIG. 1, in the first embodiment, the main fixing means 8 is provided with several pairs facing the tube end 3b and the tube abdomen 4d of the insertion tube 3 and the insertion tube 4. The mounting plate portions 9, 9; 9, 9 and the mounting plate portions 9, 9; 9, 9 are constituted by bolts and nuts 10 that are fastened to each other. Although not shown, the tube end 3b and the tube abdomen 4d of the inserted tube 3 and the inserted tube 4 are welded to form a welded portion, and the length is adjusted by any means to be fixed. Laid.

  In the illustrated first embodiment, the check valve unit A is detachably attached to the primary pipe end 4 a of the insertion pipe 4.

  1, 2, and 7, the check valve unit A is attached to the primary side of the insertion tube 4 detachably in the first embodiment, and the overall shape is secondary to the secondary side. It has a cylindrical shape with a gradually decreasing diameter over the side and has a plurality of flow holes 12 on the outer periphery, a plurality of flow holes 13A at the rear end of the secondary side, and a sliding hole 13B at the center. A valve case 11 provided with a support member 14 detachably provided, and a valve provided in the valve case 11 so as to be slidable in the axial direction X and provided on the inner circumference of the primary side of the valve case 11 A valve body 15 having a substantially conical cap 15a facing the water supply source I that is opened and closed in contact with and away from the seat portion 11a, and a length of ½ or less of the axial length X of the valve case 11 It is formed in a cylindrical shape having a length and is arranged via an allowance S with respect to the valve body 15 and has one end 16a. A valve rod 16 provided with a hook-like attachment portion 16b slidably inserted into the slide hole 13B and attached to the back portion of the support member 14 on the outer periphery of the rear end; A support bolt 17 that is slidably inserted and a tip portion is screwed into the valve body 15 to support the valve body 15 so as to be able to contact the valve rod 16, and an outer periphery of the support bolt 17. A winding spring that is arranged and is interposed between the valve body 15 and the support member 14 to urge the valve body 15 in a closing direction by always contacting the valve seat 11 a of the valve case 11. 18.

  Reference numeral 19 denotes a stopper flange that is screwed onto the outer periphery of the tip of the valve rod 16, and the stopper flange 19 engages with the support member 14 to prevent the valve rod 16 from coming out when the valve rod 16 is opened.

  Reference numeral 20 denotes a stop ring member that is detachably screwed to the front surface of the valve case 11.

  n1 is a male threaded portion provided on the outer periphery of the front end of the valve case 11 in order to detachably attach the valve case 11 to the primary side of the insertion tube 4. The male threaded portion n1 is an inner side of the primary side of the insertion tube 4. The valve case 11 is detachably attached to the primary side of the insertion tube 4 by screwing into a female thread portion m1 provided on the periphery.

  Reference numeral n2 denotes a male thread portion provided on the outer periphery of the support member 14 in order to detachably attach the support member 14 to the rear end of the secondary side of the valve case 11, and this male thread portion n2 is the rear end of the valve case 11. The support member 14 is detachably attached to the inner periphery of the rear end of the valve case 11 by screwing into a female screw portion m2 provided on the inner periphery of the valve portion.

  Reference numeral 21 denotes a plurality of annular rings provided on the inner periphery of the tube end portion 3b of the inserted tube 3 in order to ensure watertightness between the inserted tube 3 and the inserted tube 4 inserted into the inserted tube 3. It is an O-ring formed of rubber or synthetic resin fitted in the recess.

  Reference numeral 22 denotes an O-ring that is fitted to the outer periphery of the valve body 15 and is made of rubber or synthetic resin in order to ensure water tightness of the valve body 15 with respect to the valve seat portion 11a.

  Further, in the first embodiment, the stop valve B is fitted with a rotation shaft 23 so as to be rotatable in the radial direction of the insertion tube 4, and a butterfly 24 for opening and closing the inside of the insertion tube 4 on the rotation shaft 23. Although not shown in the drawing, the rotation shaft 23 is fitted into the insertion tube 3 so as to be rotatable in the radial direction, and the insertion tube is inserted into the rotation shaft 23. You may make it provide the butterfly 24 which opens and closes the inside.

  In addition, in the first embodiment, the drain valve C is mounted on the secondary side with respect to the check valve unit A via a joint member 26 on a mounting pipe portion 25 provided on the outer periphery of the insertion pipe 4 as shown in the drawing. However, this is a typical example, and the drain valve C is not limited thereto, and the drain valve C is, for example, a check valve unit via a joint member 26 on a mounting pipe portion 25 ′ provided on the outer periphery of the inserted pipe 3. The joint member 26 may be attached to both the attachment tube portion 25 provided on the outer periphery of the insertion tube 4 and the attachment tube portion 25 ′ provided on the outer periphery of the insertion tube 3. The drain valves C, C may be attached to the primary side and the secondary side with respect to the check valve unit A. The mounting pipe portions 25 and 25 'are closed when not in use.

  As described above, the length of the connected water supply pipe facility of the first embodiment can be adjusted by the insertion pipe 3 and the insertion pipe 4 into which one pipe end 4a is slidably inserted into the insertion pipe 3. For example, the installation position of the water supply ports J and J to which the water W for extinguishing water is supplied by connecting the fitting fitting of the hose extending from the fire pump car and driving the pump, Also, the installation direction of the water outlets J, J, or the laying length from the water outlets J, J provided outdoors to the building of the water supply piping system P attached to the building T, and further the water outlets J, J, When the laying length L, etc. between the water supply pipes 1, 1 'of the water supply pipe system P from J to the building T is different for each building T, the length of the inserted pipe 3 in the pipe 2 The insertion tube 4 having the tube end 4a inserted therein is slid with respect to the insertion tube 3 at the construction site. The length can be adjusted according to the laying length L between the water supply pipes 1, 1 ′ by a simple handling operation of pushing or pulling out.

  In this way, the length of the connected water pipe facility in accordance with the laying length L between the water pipes 1 and 1 'of the water pipe system P laid on the building T from the water outlets J and J different for each building T. After the length of the tube to be inserted 3 is adjusted to be shorter or longer with respect to the length adjusting tube portion 2, a number of pairs are provided so as to face the outer periphery of the tube end 3b and the tube abdomen 4d of the tube to be inserted 3 and the insertion tube By attaching the attachment plate portions 9, 9; 9, 9 of the means 8 with bolts and nuts 10 and adjusting the length in accordance with the laying length L between the water supply pipes 1, 1 ′, The insertion tube 4 is permanently fixed.

  At this time, the bolts and nuts 10 for fastening the attachment plate portions 9, 9; 9, 9 are connected to the insertion tube 3 and the insertion tube 4 of the length adjusting tube portion 2 as shown in FIGS. The installation position for holding the mounting plate portions 9 and 9; 9, 9 by the nuts 10a, 10b, 10c, and 10d to be screwed together by using a long bolt is changed in accordance with the length of Although not limited to this, the length of the insertion tube 3 and the insertion tube 4 of the length adjustment tube portion 2 is not shown in the figure after the length is adjusted. A bolt having a short length may be used in accordance with the length 4. For this purpose, a long-length bolt may be cut and shortened, or a long-length bolt and a short-length bolt may be separately prepared and used.

  Further, the fixing means 8 is not limited to the above-described means of fastening using the mounting plate portions 9 and 9 and the bolts and nuts 10 as shown in the figure. After adjusting the lengths of the insertion tube 3 and the insertion tube 4, the tube end 3 b and the tube abdomen 4 d may be welded together to constitute a welded portion and finally fixed.

  For example, in the first embodiment, the maximum laying length L1 of the length adjusting tube portion 2 is the use length of the insertion tube 3 and the insertion tube 4 of the length adjusting tube portion 2 that is adjusted in this way. For example, the length is 400 to 450 mm (see FIG. 2), and the minimum laying length L1 ′ is about 215 to 240 mm (see FIG. 1). The length L2 of the insertion tube 3 is 100 to 130 mm, and the length L3 of the insertion tube 4 is 250 to 300 mm. Therefore, even when the laying length L between the water supply pipes 1 and 1 ′ is different for each building T, the length of the connection water pipe equipment of the first embodiment is adjusted at the construction site according to the laying length L. The inserted tube 3 and the inserted tube 4 of the tube part 2 can be used by adjusting the length.

  As described above, the length of the insertion pipe 4 with respect to the insertion pipe 3 of the length adjustment pipe portion 2 is adjusted to be shorter and longer, and then the insertion pipe 3 of the connected water supply pipe facility of the first embodiment is fixed. In order to connect the insertion pipe 4 to the water supply pipes 1, 1 'of the water supply pipe system P laid on the building T from the water supply ports J, J having different long and short laying lengths L for each building T, In the first embodiment, as shown in the figure, a flange 5 that engages with an engagement edge 4c provided on the outer periphery of the pipe end 4b of the insertion pipe 4, and a flange provided on the pipe end of the water supply pipe 1 'on the secondary side. The secondary side water supply pipe 1 ′ and the pipe end 4 b of the insertion pipe 4 are connected by fastening the part 6 ′ with bolts and nuts 7. In this way, the flange 5 that engages with the engaging edge 4c provided on the outer periphery of the pipe end 4b of the insertion pipe 4 is provided on the flange 6 'provided on the outer periphery of the pipe end of the water supply pipe 1' on the secondary side. The bolts and nuts 7 are tightened so that the flange 5 is engaged with the engagement edge 4c so that the flange 5 is welded to the outer periphery of the tube end 4b of the insertion tube 4. Saved the trouble. In addition, the flange portion 5 ′ provided on the outer periphery of the pipe end portion 3 a of the inserted pipe 3 and the flange portion 6 provided on the outer periphery of the pipe end portion of the primary water supply pipe 1 are fastened by bolts and nuts 7. The primary side water supply pipe 1 and the insertion pipe 3 are connected.

  However, this connection method is a representative example, and is not limited to this. Although not shown in the figure, a flange that engages with an engaging edge protruding on the outer periphery of the primary side of the inserted tube 3 is provided. In this case, this flange and the flange portion 6 provided at the pipe end of the primary water supply pipe 1 are fastened with bolts and nuts 7 so that the primary water supply pipe 1 and the inserted pipe 4 are connected. May be.

  As described above, in the connected water supply pipe facility of the first embodiment, the flange portion 5 ′ at one end of the insertion pipe 3 or an engagement edge projecting on the outer periphery of one end of the insertion pipe 3 is not shown in the drawing. The flange 5 which can be engaged and disengaged and the flange portion 6 of the water supply pipe 1 on the primary side are fastened by using bolts and nuts 7, or the flange 5 provided on the outer periphery of the tube end portion 4 b of the insertion tube 4, or FIG. The flange portion 6 'of the secondary side water supply pipe 1' is fastened with bolts and nuts 7 at the two locations where the bolts and nuts 7 are used to join the primary side and the secondary side. Between the water supply pipes 1, 1 ′ on the side, a connected water supply pipe facility consisting of the inserted pipe 3 and the insertion pipe 4 can be connected, and the connection point is upstream like the connected water supply pipe equipment described in Patent Document 1. Connection between the primary side water pipe and the upstream short pipe, Connected water pipes that connect a total of five locations, including the connection between the downstream water pipe and the downstream short pipe on the downstream side, and the connection between the short pipes, using a saddle-type joint split in half. Unlike equipment, the number of connection points is reduced and the number of parts is small, so that connection work can be performed quickly and reliably, and work efficiency is improved.

  In this way, the fire pump automobile hose is connected to the water supply ports J, J via the connection fittings (not shown in the figure), and the high pressure fire-fighting water W becomes the water supply source I by driving the pump. J is supplied into the water supply pipe 1 on the primary side of the water supply pipe system P.

  Then, when the fire-extinguishing water W is supplied from the water supply pipe 1 on the primary side of the water supply piping system P into the inserted pipe 3 of the connected water supply pipe facility of the first embodiment, the fire water W is inserted into the insertion pipe 4 of this connected water supply pipe facility. Since the valve body 15 of the provided check valve unit A receives the high water pressure of the fire-extinguishing water W and is pushed by the urging force of the winding spring material 18, it is detached from the valve seat 11 a of the valve case 11 and opened. A part of the fire-extinguishing water W flowing into the valve case 11 flows out along the valve rod 16 from the water flow hole 13A to the rear stage of the valve case 11 and passes through the plurality of flow holes 12 provided on the outer periphery of the valve case 11 to the outer periphery. Other fire extinguishing water W flowing out to the outside becomes expiratory water, the flow velocity is increased, resistance to the fire extinguishing water W is small, and pressure loss in the pipe can be reduced.

  Further, the valve rod 16 is separated from the valve body 15 via an allowance S and is formed to have a length that is half or less of the axial length X of the valve case 11. Even when 15 is separated from the valve seat portion 11a of the valve case 11 by receiving the high pressure of the fire-extinguishing water W against the urging force of the winding spring material 18, the valve rod 16 does not respond immediately.

  That is, when the push-in of the valve body 15 is continued, and the allowance S shown in FIG. It is pushed against 18 powers.

  And in this Embodiment 1, since the valve rod 16 is formed in the length below the half of the axial length direction X of the valve case 11, the short movement stroke that the valve rod 16 protrudes from the support member 14 slightly. Thus, the opening / closing operation of the stop valve B is not hindered (see FIG. 7).

  In the first embodiment, the check valve unit A has a primary shape as a whole by screwing a male screw portion n1 provided on the outer periphery of the front end portion with a female screw portion m1 provided on the inner periphery of the primary side of the insertion tube 4. It has a cylindrical shape formed gradually from the side to the secondary side and has a plurality of flow holes 12 on the outer periphery, and slides in the center with a plurality of flow holes 13A at the rear end of the secondary side A valve case 11 provided with a support member 14 provided with a hole 13B is attached. In the valve case 11, a valve seat 11a provided on the inner periphery of the primary side of the valve case 11 is contacted and separated. A valve body 15 to be opened and closed is slidably provided, and a cylindrical valve rod 16 having a length equal to or less than ½ of the length of the valve case 11 in the axial direction X is opposed to the valve body 15. The one end 16a is slidably inserted into the sliding hole 13B. A hook-like attachment portion 16b that can be attached to the back portion of the support member 14 is provided on the outer periphery of the rear end, and a support bolt 17 is slidably inserted into the valve rod 16 so that the tip portion is the valve body 15. The valve body 15 is supported so as to be able to contact the valve rod 16 by being screwed into the valve rod 16, and a winding spring is provided between the valve body 15 and the support member 14 on the outer periphery of the support bolt 17. 18 so that the valve body 15 is always in contact with the valve seat portion 11a of the valve case 11 and urged in the closing direction so that the check valve unit A can be easily placed in the valve case 11. Can be assembled to.

  Moreover, parts such as the valve body 15, the valve seat 11 a, the valve rod 16, the winding spring 18, and the support member 14 may cause failure due to mechanical fatigue or wear, or need to be replaced with new parts. In this case, the flange 5 'provided on the outer periphery of the pipe end 3a of the inserted pipe 3 and the flange 6 provided on the pipe end of the water supply pipe 1 on the primary side are unfastened by bolts and nuts 7. The flange 5 engaged with the engagement edge 4c provided on the outer periphery of the pipe end 4b of the insertion pipe 4 and the secondary side water supply pipe are removed from the primary side water supply pipe 1 and the insertion pipe 3 by The attachment of the secondary side water supply pipe 1 ′ and the pipe end 4 b of the insertion pipe 4 is released by releasing the bolts and nuts 7 from the flange 6 ′ provided at the pipe end 1 ′.

  After disconnecting the connected water supply pipe facility from the water supply pipes 1, 1 ′ in this way, for example, the primary pipe end of the valve case 11 from the female thread m 1 provided on the inner circumference of the primary side of the insertion pipe 4. The male threaded portion n1 provided on the outer periphery of the portion is screwed off, and the check valve unit A is taken out for each valve case 11 to the outside of the insertion pipe 4 of the connected water pipe equipment. Then, the retaining ring member 20 screwed on the front end and inner periphery of the valve case 11 is removed by screwing, and the male screw part n2 is screwed off from the female screw part m2 so that the support member 14 is removed from the rear part of the valve case 11. After removal, parts such as the valve body 15, the valve rod 16, and the winding spring 18 are taken out from the valve case 11 and replaced with new ones.

  After the parts of the check valve unit A are replaced with new parts, the valve case 11 of the check valve unit A is again mounted in the same manner as the connection work for connecting the connected water pipe equipment between the water pipes 1 and 1 '. Assembling the check valve unit A and connecting the water supply pipes 1 and 1 'to the pipe end 4a on the primary side of the insertion pipe 4 by screwing the female screw part m1 and the male screw part m1 Connect.

  The replacement work for this part is that the check valve unit A can be easily detached and attached to the insertion tube 4 and that the check valve unit A is disassembled after the check valve unit A is taken out from the insertion tube 4. Since it can be easily performed, the operator can easily perform the replacement work at the construction site, and it is transported to the factory for each connected water pipe facility that has been disconnected from the water pipes 1 and 1 'as described above. Parts may be replaced or repaired.

  Moreover, in the connection water supply pipe | tube installation of this Embodiment 1, in the secondary side of the non-return valve unit A of the insertion pipe | tube 4 of the length adjustment pipe | tube part 2, the rotating shaft 23 can be rotated to the radial direction of the insertion pipe | tube 4. Since the water stop valve B is formed by providing the rotary shaft 23 with the butterfly 24 that opens and closes the inside of the insertion pipe 4, the check valve unit is connected to the same insertion pipe 4 of the connected water supply pipe equipment. Since it is equipped with valves of A and water stop valve B, it becomes compact, and the check valve unit A and water stop valve B are assembled in a connected water distribution pipe facility. It is also convenient for handling, transportation and storage. In the first embodiment shown in the figure, a coupling member 26 is connected to a mounting pipe part 25 provided on the outer periphery of the insertion pipe 4 on the secondary side of the check valve unit A of the insertion pipe 4 of the length adjustment pipe part 2. However, the present invention is not limited to this, and is not shown in the figure. For example, on the primary side with respect to the check valve unit A provided in the insertion pipe 4 of the length adjustment pipe portion 2, A water stop valve B may be provided.

  Moreover, in the first embodiment, as shown in the drawing, the attachment pipe portion 25 provided on the outer periphery of the insertion pipe 4 is connected to the check valve unit A via the joint member 26 via the joint member 26 on the secondary side, for example. Since the drain valve C can be attached, the same insertion pipe 4 is provided with the check valve unit A, the stop valve B, and the drain valve C, so that it is convenient to use and the check valve unit A In addition, the water stop valve B and the drain valve C can be easily assembled and manufactured, and it is a compact and lightweight connected water distribution pipe facility, which is suitable for handling, transportation and storage.

  In the first embodiment, the drain valve C is attached to the secondary pipe side with respect to the check valve unit A provided in the insertion pipe 4 via the fitting member 26 via the joint member 26. However, the present invention is not limited to this. The drain valve C can be attached to the primary side of the check valve unit A, for example, on the outer circumference of the insertion tube 3 via the joint member 26, or provided to the insertion tube 4. The drainage valves C and C are provided on the primary side and the secondary side with respect to the check valve unit A via the joint member 26 on both the mounting pipe part 25 and the mounting pipe part 25 ′ provided on the outer periphery of the inserted pipe 3. It may be attached. When the mounting pipe portions 25 and 25 'are not used, the mounting pipe portions 25 and 25' are closed by covering them with, for example, a cover material not shown in the drawing or by inserting pins into the mounting pipe portions 25 and 25 '.

  Furthermore, in the said Embodiment 1, the flange 5 engaged with the engagement edge 4c provided in the outer periphery of the pipe end part 4b of the insertion pipe 4, and the flange part provided in the pipe end of the said water supply piping 1 'of a secondary side 6 'is fastened with bolts and nuts 7 to connect the secondary side water supply pipe 1' to the pipe end 4b of the insertion pipe 4 and a flange provided on the outer periphery of the pipe end 3a of the insertion pipe 3 The primary side water supply pipe 1 and the inserted pipe 4 are connected to each other by fastening the part 5 'and the flange part 6 provided at the pipe end of the primary side water supply pipe 1 with bolts and nuts 7. These connection methods are representative examples, and the present invention is not limited to this. For example, although not shown in the drawing, a flange that engages with an engagement edge protruding from the outer periphery of the primary side of the inserted tube 3 is provided. In this case, this flange and the flange portion 6 provided at the pipe end of the water supply pipe 1 on the primary side It may be connected to the water supply pipe 1 of the primary side and the insertion tube 4 by Tightened by bolts and nuts 7.

  The present invention adjusts the length of the length adjustment pipe part at the construction site according to the length of the laying length between the water supply pipes of the water supply pipe system that sends high-pressure fire-fighting water from the water supply port, and connects with a simple handling operation. The work can be performed quickly and reliably, and it has excellent workability and can be easily disassembled during maintenance and inspection, so that it can be easily and reliably replaced with new parts. Furthermore, it is easy to manufacture and assemble with a simple structure, and is suitable for applications and functions that reduce manufacturing costs and construction costs.

FIG. 1 is a cross-sectional view showing a state in which Embodiment 1 of a connected water pipe facility of the present invention is connected with a minimum laying length after adjusting the length between water pipes of a water pipe system. FIG. 2 is a cross-sectional view showing a state in which the connection water pipe facilities of the first embodiment are connected with the maximum laying length after adjusting the length. FIG. 3 is a side view showing a state in which Embodiment 1 of the connected water pipe facility of the present invention is connected with a minimum laying length after adjusting the length between the water pipes of the water pipe system. FIG. 4 is a side view showing a state in which the connection water pipe facilities according to the first embodiment are connected with the maximum laying length after adjusting the length. FIG. 5 is also a QQ cross-sectional view of FIG. 6 is a cross-sectional view taken along the line RR in FIG. FIG. 7 is a cross-sectional view showing a state in which the valve body of the reverse water valve unit constituting Embodiment 1 of the connected water supply pipe equipment of the present invention is opened. FIG. 8 is a circuit diagram showing an example of a state in which the water connection pipe facility according to the first embodiment of the present invention is laid between the water supply pipes of the water supply pipe system.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Water supply piping 1 'Water supply piping 2 Length adjustment pipe part 3 Insertion pipe 3a Pipe end part 4 Insertion pipe 4a Pipe end part 4b Pipe end part 4c Engagement edge 5 Flange 5' Flange part 6 Flange part 6 'Flange part 7 Bolt / Nut A Check valve unit A 'Check valve B Water stop valve C Drain valve J Water supply port L Installation length P Water supply piping system W Fire extinguishing water

Claims (11)

A check valve and a water stop valve are provided in a pipe connected between the water supply pipe on the primary side and the secondary side of the water supply pipe system for sending fire-fighting water from the water supply port, and the primary side or / And a connected water pipe with a drain valve on the secondary side,
A length adjusting pipe portion whose length can be adjusted according to the length of the laying length between the water supply pipes by means of a pipe to be inserted and an insertion pipe into which one pipe end is slidably inserted into the pipe to be inserted. Configure
A check valve unit is provided in the length adjustment pipe portion.
A connected water pipe facility characterized by that.   The insertion pipe or the insertion pipe includes a flange that engages with an engagement edge provided on an outer periphery of the pipe end portion so as to face the water supply pipe on the primary side and / or the secondary side, and the primary side and / or the secondary side. The flange part provided in the pipe end part outer periphery of the said water supply piping of the side is connected to the primary side or / and the secondary side water supply piping by fastening with a volt | bolt and a nut. Connected water pipe equipment.   The said insertion pipe and the said insertion pipe are fixed by this fixing means and laid after adjusting the length according to the length of the laying length between the said water supply pipes, or laying down. Connected water pipe facilities as described in 1.   The said check valve unit is attached in the pipe | tube end part of the primary side of the said insertion pipe so that attachment or detachment is possible, The connection water pipe installation of any one of Claims 1-3 characterized by the above-mentioned.   The said check valve unit is attached in the pipe end part of the primary side of the said insertion pipe so that attachment or detachment is possible, The connection water pipe equipment of any one of Claims 1-3 characterized by the above-mentioned.   The said check valve unit, a water stop valve, and a drain valve are provided in the said insertion pipe, The connection water pipe installation of any one of Claims 1-4 characterized by the above-mentioned.   The said check valve unit, a water stop valve, and a drain valve are provided in the said insertion pipe, The connection sending in any one of Claims 1-3 or Claim 5 characterized by the above-mentioned. Water pipe equipment. The check valve unit has a cylindrical shape in which one end is detachably attached to a tube end portion on the primary side of the insertion tube or the insertion tube, and the overall shape is gradually reduced from the primary side to the secondary side. A valve case provided with a support member provided with a plurality of flow holes on the outer periphery, a plurality of water flow holes at the rear end of the secondary side and a sliding hole at the center,
A substantially conical cap is formed on the front surface of the valve case so as to be slidable in the axial direction. With the valve body
The valve case is formed in a cylindrical shape having a length that is ½ or less of the axial length of the valve case, and is arranged via an allowance with respect to the valve body, and one end is slidable in the sliding hole. A valve rod having a flange-like attachment portion inserted on the back portion of the support member and provided on the outer periphery of the rear end portion;
A support bolt that is slidably inserted into the valve rod and has a distal end screwed into the valve body to support the valve body so as to be able to contact the valve rod;
A winding that is disposed on the outer periphery of the support bolt and is interposed between the valve body and the support member so that the valve body is always brought into contact with the valve seat portion of the valve case and biased in a closing direction. Springs,
The connected water pipe installation according to any one of claims 1 to 7, characterized in that   The water stop valve is fitted with a rotation shaft so as to be rotatable in the radial direction of either the insertion tube or the insertion tube, and a butterfly for opening and closing the insertion tube or the insertion tube is provided on the rotation shaft. The connected water pipe installation according to any one of claims 1 to 8, wherein The drain valve is attached to a primary side or a secondary side with respect to a check valve unit via a joint member on an attachment pipe portion provided on an outer periphery of the insertion pipe or / and the insertion pipe. The connected water pipe equipment according to any one of claims 1 to 9.   The main fixing means comprises a mounting plate portion provided in several pairs facing the tube end portion and the tube abdominal portion of the insertion tube and the insertion tube, and a bolt and a nut for fastening the mounting plate portions to each other. The welded portion is formed by welding the tube end portion and the tube abdominal portion of the tube to be inserted and the tube to be inserted. The connected water pipe facility according to any one of claims.

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