JP3076804U - Piping unit - Google Patents

Abstract

(57) [Summary] [PROBLEMS] To provide a piping unit capable of efficiently installing and replacing piping equipment. SOLUTION: A main pipe 2 and a bypass pipe 4 integrally joined to the main pipe 2 are provided.
Has two main gate valves 10 and 10 for opening and closing the flow path, and a piping device 12 interposed between the main gate valves 10 and 10, and the bypass pipe 4 opens and closes the flow path. It has a bypass gate valve 16 and the main gate valves 10, 10
And a piping unit 1 provided to bypass the piping device 12.

Description

[Detailed description of the invention]

[0001]

[Technical field to which the invention belongs]

 The present invention relates to a piping unit provided in a pipe such as a water pipe or a gas pipe and provided with a piping device.

[0002]

[Prior art]

 Conventionally, piping devices such as flow meters and pressure reducing valves are provided in water pipes and gas pipes. Conventionally, this mounting work has been performed at the installation site. For example, as shown in FIG. 3, a housing case 54 whose upper opening is freely opened and closed by a cover (not shown) is installed. By extending the water pipe 52 while attaching the flow meter 56 and the two gate valves 58, 58, the water pipe 52 is made to penetrate the storage case 54.

[0003] The flow rate check and maintenance can be performed by opening the cover of the storage case 54. When the flow meter 56 needs to be replaced, two partitions located on both sides of the flow meter 56 are required. This is performed after the valves 58, 58 are closed.

[0004]

[Problems to be solved by the invention]

 However, according to the above-mentioned conventional construction method, there is a problem in that it takes a long time to install piping devices such as the flow meter 56, the gate valve 58, and the like on site, resulting in poor work efficiency.

Further, during the replacement work of the piping equipment, the flow of water and gas must be shut off by the gate valve 58, which not only inconveniences the user but also causes the user There was a problem that it was necessary to disseminate information to the public and it was troublesome.

The present invention has been made to solve these problems, and an object of the present invention is to provide a piping unit that enables efficient installation and replacement of piping equipment.

[0007]

[Means for Solving the Problems]

 The object of the present invention is to provide a main pipe and a bypass pipe integrally joined to the main pipe, wherein the main pipe has two main gate valves for opening and closing a flow path, and the main gate. A piping device interposed between the valves, wherein the bypass piping has a bypass gate valve for opening and closing a flow path, and is provided so as to bypass the main gate valve and the piping device. This is achieved by a plumbing unit.

Alternatively, the object of the present invention is to provide a main pipe and a bypass pipe integrally joined to the main pipe, wherein the main pipe has two three-way valves for switching a flow path; It has piping equipment interposed between the three-way valves, and the bypass piping is also achieved by a piping unit having both ends connected to the three-way valve and provided so as to bypass the piping equipment. Is done.

The latter piping unit further includes a housing case for housing the main pipe and the bypass pipe, wherein the housing case has both ends of the main pipe protruding to the outside, and an opening is formed by a lid. Preferably, it can be opened and closed freely.

The piping equipment in the present invention includes various equipment such as a pump, a blower, and a compressor in addition to measuring equipment such as a flow meter and a pressure gauge, pressure control valves such as a pressure reducing valve and a safety valve.

[0011]

[Embodiment of the invention]

 Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. FIG. 1 is a schematic configuration diagram illustrating a piping unit according to a first embodiment of the present invention.

As shown in FIG. 1, the piping unit 1 includes a main pipe 2, a bypass pipe 4, and a storage case 6. The housing case 6 is a housing whose upper part is open, and is openable and closable by a lid (not shown) rotatably mounted via a hinge. In the side plate of the housing case 6, insertion holes 6a, 6a are formed at two places facing each other, and the main pipe 2 penetrates through the insertion holes 6a, 6a. It is housed in the housing case 6.

At the center of the main pipe 2, two main gate valves 10, 10 for opening and closing the flow path are provided, and a piping device 12 such as a flow meter is interposed between the main gate valves 10, 10. Have been. In addition, an expansion pipe joint 14 is provided between one main gate valve 10 and the piping device 12.

The bypass pipe 4 has a substantially U-shape, and a bypass gate valve 16 for opening and closing a flow path is provided in the middle of the pipe. Both ends of the bypass pipe 4 are joined to the main pipe 2 so as to sandwich the storage case 6. This joint is preferably integrated so as to be inseparable by welding or the like. Since a loop is formed between the bypass pipe 4 and the main pipe 2, the position of the storage case 6 is held at the center of the main pipe 2.

Next, a method of using the piping unit will be described. First, the pipe unit 1 is transported to the installation site, and both ends of the main pipe 2 are connected to upstream pipes P1 and downstream pipes P2 such as water pipes and gas pipes via pipe joints such as nipples. You.

In a normal use state, by opening the main gate valves 10 and 10 and closing the bypass gate valve 16, the fluid flowing from the upstream pipe P 1 passes through the piping device 12 and passes through the downstream pipe P 2 Leaks to On the other hand, when replacing the piping equipment 12, after opening the bypass gate valve 16, the main gate valves 10, 10 are closed. As a result, the fluid flowing from the upstream pipe P1 flows through the bypass pipe 4 without passing through the pipe equipment 12, and flows out to the downstream pipe P2. It is also possible to pass fluid. It should be noted that the provision of the expansion joint 14 facilitates replacement work of the piping equipment 12. After the replacement of the piping device 12 is completed, the main gate valves 10 and 10 are opened, and then the bypass gate valve 16 is closed.

Next, a second embodiment of the present invention will be described with reference to FIG. Note that, in the second embodiment, the same components as those in the above-described first embodiment are denoted by the same reference numerals, and description thereof will be omitted.

As shown in FIG. 2, the piping unit 21 includes three-way valves 22, 22 instead of the main gate valves 10, 10 of the first embodiment, at the portion where the main piping 2 is located inside the storage case 6. The piping device 12 is interposed between the three-way valves 22, 22. In addition, not only the main pipe 2 but also a bypass pipe 4 is housed in the housing case 6, and both ends of the bypass pipe 4 are connected to the three-way valves 22 and 22, respectively. The three-way valves 22 and 22 are integrally connected to the main pipe 2 and the bypass pipe 4 so as to be inseparable, and the fluid flowing from one end of the main pipe 2 passes through the piping device 12 or is bypassed. It can be switched by passing through the tube 4.

The method of using the piping unit 21 is the same as that of the first embodiment. First, after transporting to the installation site, both ends of the main piping 2 are connected to the upstream piping P1 and the downstream piping P2. Connect each. In this piping unit 21, since the bypass pipe 4 is also housed in the housing case 6, it is easy to stack and convenient for mass transfer. By switching the three-way valves 22, 22, the fluid normally passes through the piping device 12, and the fluid passes through the bypass pipe 4 when the piping device 12 is replaced.

As described above, the embodiments of the present invention have been described in detail. However, specific embodiments of the present invention are not limited to the above embodiments. For example, the storage case 6 in each embodiment is not always necessary. For example, when the storage case 6 is installed on the ground, the storage case 6 may be omitted.

Further, in the first embodiment, the bypass pipe 4 is provided outside the storage case 6. However, the bypass pipe 4 can be stored inside the storage case 6. Even when buried underground, the operation of the bypass gate valve 16 can be easily performed.

[0022]

[Effect of the invention]

 As is clear from the above description, according to the piping unit of the present invention, installation work of piping equipment can be performed quickly, and when repair is required due to corrosion or the like, it is necessary to replace the entire piping unit. Maintenance is easy. In addition, since the bypass pipe is integrally joined to the main pipe, leakage of fluid from the joint can be reliably prevented even in a disaster such as an earthquake.

Further, the fluid passing through the piping device can be bypassed to the bypass piping by operating the gate valve or the three-way valve, so that the piping device can be replaced without stopping the flow of the fluid. Work can be performed efficiently.

Further, by housing the main pipe and the bypass pipe in the storage case, a compact configuration can be achieved, and handling and transport become easy.

[Brief description of the drawings]

FIG. 1 is a schematic configuration diagram of a piping unit according to a first embodiment of the present invention.

FIG. 2 is a schematic configuration diagram of a piping unit according to a second embodiment of the present invention.

FIG. 3 is a diagram for explaining a conventional method of installing piping equipment.

[Explanation of symbols]

 1, 21 Piping unit 2 Main piping 4 Bypass piping 6 Storage case 10 Main gate valve 12 Piping equipment 16 Bypass gate valve 22 Three-way valve

Claims (4)

[Utility model registration claims] 1. A main pipe comprising: a main pipe; and a bypass pipe integrally joined to the main pipe, wherein the main pipe is provided with two main gate valves for opening and closing a flow path, and between the main gate valves. A piping unit having intervening piping equipment, wherein the bypass piping has a bypass gate valve for opening and closing a flow path, and is provided so as to bypass the main gate valve and the piping equipment. 2. A main pipe, and a bypass pipe integrally joined to the main pipe, wherein the main pipe is provided with two three-way valves for switching a flow path, and interposed between the three-way valves. A piping unit, comprising a piping device, wherein the bypass piping has both ends connected to the three-way valve and provided so as to bypass the piping device. 3. A storage case for storing the main pipe and the bypass pipe, wherein the storage case has both ends of the main pipe protruding outside, and an opening is openable and closable by a lid. The piping unit according to claim 2. 4. The piping unit according to claim 1, wherein the piping device is a flow meter.