JP7462183B2 - How to check for leaks - Google Patents

Description

The present invention relates to a leak inspection method that is attached to piping connected to an air conditioning device to determine whether or not there is a leak.

A known conventional method for inspecting for water leaks is the air pressure test method described in Patent Document 1. The inspection method described in Patent Document 1 involves blocking off pipes at predetermined sections in a multi-story building, and using inspection equipment with a compressor and pressure measuring device to increase the pressure in the pipes to be inspected to a specified level or higher, and then measuring the change in air pressure in the pipes. If there is no change in the air pressure in the pipes after a predetermined time, it can be confirmed that the pipe connections and other parts are airtight and that there are no leaks in the pipes.

The above-mentioned inspection method is used to test pipes for leaks using air pressure, as follows. The building's pipes to be tested for leaks are equipped with a vertically installed standpipe that connects the upper and lower floors, and horizontal pipes that are arranged along each floor and drain water into the standpipe. The horizontal pipes are also connected to multiple branch pipes that are connected to air conditioning equipment.

First, as shown in Figure 5, the inspection equipment is connected to one branch pipe that is connected to the air conditioning equipment. Next, the other branch pipe ends, the horizontal pipe ends, and the vertical pipe are blocked, and pressurized air is sent into the pipes using a compressor to increase the pressure inside the pipes. After a specified time has passed, the pressure inside the pipes is measured, and if there is no fluctuation in the pressure, it is determined that there is no leak and the inspection is terminated.

Japanese Patent Application Laid-Open No. 2-212733

When inspecting for leaks in the piping consisting of the vertical pipes, horizontal pipes, and branch pipes, the branch pipes to which the inspection equipment is connected are located at high places on each floor. Therefore, when the inspection equipment is placed on the floor of the inspection floor, it is difficult to attach and detach the inspection equipment from the branch pipes because they are far apart. On the other hand, it is also difficult to attach and detach the inspection equipment from the branch pipes when the inspection equipment is carried close to the branch pipes using a stepladder or the like.

The present invention was invented in consideration of the above problems, and aims to improve the workability of the method for inspecting pipes for leaks.

The present invention as set forth in claim 1 is a method for inspecting a pipe for water leakage in a building having multiple floors, comprising the steps of:
The piping of the building includes a vertical pipe that penetrates multiple floors vertically,
A horizontal pipe connected to the vertical pipe and arranged substantially horizontally near the top surface of each floor;
A branch pipe for connecting to an air conditioning device, the branch pipe being provided on the horizontal pipe;
It consists of:
The vertical pipe is provided near the floor surface of the inspection work floor with an inspection equipment connection portion for supplying pressurized air from the inspection equipment,
Blocking the flow path in the standpipe to be inspected;
With respect to the horizontal pipe, an open portion of the horizontal pipe including the branch pipe end portion is blocked;
The inspection equipment is connected to the inspection equipment connection section, pressurized air from the inspection equipment is fed into the vertical pipe to pressurize the vertical pipe, and the presence or absence of a water leak in the vertical pipe and the horizontal pipe is determined based on a change in air pressure in the pipe .
This is a method for inspecting for water leakage, characterized in that the flow path on the upper floor side of the flow path in the vertical pipe is kept blocked, and the next water leakage inspection is carried out on a floor above the inspection work floor as a new inspection work floor .

The present invention as set forth in claim 2 is a method for inspecting a pipe for water leakage in a building having multiple floors, comprising the steps of:
The piping of the building includes a vertical pipe that penetrates multiple floors vertically,
A horizontal pipe connected to the vertical pipe and arranged substantially horizontally near the top surface of each floor;
A branch pipe for connecting to an air conditioning device, the branch pipe being provided on the horizontal pipe;
It consists of:
an inspection equipment connection portion for supplying pressurized air from an inspection equipment to the horizontal pipe;
This is a method for inspecting for leaks, which comprises blocking an open portion of the horizontal piping including the end of the branch pipe of the horizontal piping, and the flow path from the inspection equipment connection portion to the vertical pipe, connecting the inspection equipment to the inspection equipment connection portion, sending pressurized air from the inspection equipment to pressurize the horizontal piping, and determining whether or not there is a leak in the horizontal piping based on the change in air pressure in the piping .

In the present invention according to claim 3, the horizontal piping is
The method for inspecting water leaks as described in claim 2 is characterized in that a vertical section in which a pipe body is arranged in an up-down direction is provided between the branch pipe closest to the vertical pipe and the connection section with the vertical pipe, and the inspection equipment connection section is provided on the vertical section.

The present invention as set forth in claim 4 is a method for inspecting a pipe for water leakage in a building having multiple floors, comprising the steps of:
The piping of the building includes a vertical pipe that penetrates multiple floors vertically,
A horizontal pipe connected to the vertical pipe and arranged substantially horizontally near the top surface of each floor;
A branch pipe for connecting to an air conditioning device, the branch pipe being provided on the horizontal pipe;
It consists of:
The vertical pipe is provided near the floor surface of the inspection work floor with an inspection equipment connection portion for supplying pressurized air from the inspection equipment,
This is a method for inspecting for leaks, which comprises blocking the flow paths between the horizontal piping on each floor and the connection with the standpipe , and the flow paths within the standpipe to be inspected , connecting the inspection equipment to the inspection equipment connection part, sending pressurized air from the inspection equipment to pressurize the standpipe, and determining whether or not there is a leak in the standpipe based on the change in air pressure within the piping.

According to the present invention described in claims 1 and 4 above, an inspection equipment connection portion that is connected to an inspection equipment is provided on the vertical pipe near the floor surface of the inspection work floor, so that a water leak inspection can be easily performed with the inspection equipment placed on the floor surface of the inspection work floor.
According to the present invention as set forth in claim 2, the distance between the inspection equipment and the inspection equipment connection part is shortened, so that the water leakage inspection can be easily performed. According to the present invention as set forth in claim 3, the horizontal pipe is provided with a vertical part, and the vertical part is provided with an inspection equipment connection part for connecting to the inspection equipment, so that the distance between the inspection equipment and the inspection equipment connection part is shortened further, so that the water leakage inspection can be easily performed.

1 is a configuration diagram showing a pipe and water leakage inspection method according to a first embodiment; FIG. 11 is a configuration diagram showing a method for inspecting pipes and lateral pipes for leaks according to a second embodiment. FIG. 11 is a configuration diagram showing a method for inspecting piping and standpipes for leaks according to a second embodiment. FIG. 11 is a configuration diagram showing another embodiment. FIG. 1 is a block diagram showing a conventional method for inspecting water leakage.

The method for inspecting water leaks according to the present invention will be described below. Note that the following description is provided to facilitate understanding of the embodiment, and is not intended to limit or limit the scope of the present invention.

First Embodiment
1 is a diagram showing the configuration of a pipe 1 to be inspected for leaks using inspection equipment 6, and is composed of a vertical pipe 2, a horizontal pipe 3, a branch pipe 4, and a joint member 5. The pipe 1 is also provided with an inspection equipment connection part 53 by the joint member 5 near the floor surface of the vertical pipe 2.

The vertical pipe 2 is a pipe that penetrates the upper and lower floors of a multi-story building and extends in the vertical direction, and a coupling member 5 is attached below the connection between the horizontal piping 3 and the vertical pipe 2, at a height position near the floor surface of each floor.
The horizontal pipe 3 is extended substantially horizontally near the ceiling surface of each floor, with one end connected to the standpipe 2 and the other end formed with a cleaning port 31. The horizontal pipe 3 also has a vertical section 32, with a pipe body disposed in the up-down direction, between the branch pipe 4 closest to the standpipe 2 and the connection with the standpipe 2. The vertical section 32 adjusts the height position when the horizontal pipe 3 and the standpipe 2 are connected.
The branch pipes 4 are provided at a plurality of locations on the horizontal piping 3 and are connected to each air conditioning device (not shown) to discharge drainage generated during use of the air conditioning device into the horizontal piping 3.

The joint member 5 is a joint connected to the vertical pipe 2 near the floor surface of each floor, and has an inspection hatch 51, a blocking member 52, and an inspection equipment connection part 53. The joint member 5 attached to the inspection work floor and the joint member 5 attached to the other floors are the same member, so they are given the same numbers and their explanations are omitted.
The blocking member 52 is a plate-shaped member that is in close contact with the flow path inside the joint member 5, and is detachable from the inspection hatch 51 into the joint member 5. After the leakage inspection is completed, the flow path inside the standpipe 2 can be opened by removing the blocking member 52 from the joint member 5.
The inspection equipment connection part 53 is an opening to which the inspection equipment 6 described later is connected, and is disposed near the floor surface of the inspection work floor, and the pressurized air of the inspection equipment 6 is sent from the inspection equipment connection part 53 into the piping 1. When the inspection equipment 6 is not connected, the inspection equipment connection part 53 is closed by a stopcock.

The inspection device 6 has a compressor and a pressure measuring device. The inspection device 6 uses the compressor to send pressurized air into the pipe 1 via the inspection device connection part 53, increasing the pressure inside the pipe 1, and measures the pressure fluctuations inside the pipe 1 with the pressure measuring device.

The following describes a method for inspecting the pipe 1 for leaks using the inspection equipment 6. In the first embodiment, the vertical pipe 2 is installed first, and then the horizontal pipes 3 are installed on each floor. The joint member 5 is installed so that the inspection equipment connection part 53 is located upstream of the blocking member 52.

First, the cleaning port 31 formed at the other end of the horizontal pipe 3 and all of the branch pipes 4 are closed, and all open parts of the horizontal pipe 3 are closed. Next, a blocking member 52 is attached to the joint members 5 on the inspection floor and upper floors through the inspection port 51, blocking the flow path in the stand pipe 2 below the floor of the inspection floor and the flow path in the stand pipe 2 above the floor of the upper floor above the joint members 5 on the upper floor. At this time, the flow paths in the horizontal pipe 3 and branch pipe 4 on the inspection floor and the flow path between the joint members 5 on the inspection floor and the joint members 5 attached to the floor above the inspection floor are sealed.
Next, the inspection device 6 is connected to the inspection device connection part 53 of the joint member 5, pressurized air is sent into the pipe 1 by the compressor, and the change in air pressure in the pipe 1 for a predetermined time is measured by the pressure measuring device. At this time, if no air pressure fluctuation is measured in the pipe 1 or the decrease amount is within the allowable range, it is determined that there is no leakage in the flow path in the pipe 1, and the leakage inspection is terminated. After the work is completed, the connection between the inspection device 6 and the joint member 5 is released, the inspection device connection part 53 is blocked by a stopcock, and the blocking member 52 is removed from the joint member 5 to open the flow path. If a leakage inspection is to be performed on the upper floor next, the blocking member 52 is left in place in the joint member 5 of the upper floor, the upper floor is set as the inspection work floor, the inspection device 6 is connected to the joint member 5, and the leakage inspection on the upper floor is performed.

After the above-mentioned leak inspection is completed, the ceiling surface of each floor is formed at the height position shown by the two-dot chain line in Figure 1, below the connection between the horizontal pipe 3 and the vertical pipe 2.

In the first embodiment, the vertical pipe 2 near the floor surface of the inspection floor is provided with an inspection equipment connection part 53 that connects to the inspection equipment 6, so that a water leak inspection can be easily performed with the inspection equipment 6 placed on the floor surface of the inspection floor. In particular, the joint member 5 is attached below the connection part between the horizontal pipe 3 and the vertical pipe 2, and the inspection equipment connection part 53 is provided, so that a water leak inspection can be easily performed.

Second Embodiment
Next, a second embodiment of the present invention will be described.
2 is a diagram showing the configuration of a pipe 1 to be inspected for leaks using inspection equipment 6, and is composed of a vertical pipe 2, a horizontal pipe 3, a branch pipe 4, and a joint member 5. The pipe 1 is also provided with inspection equipment connection parts 53 by the joint member 5 near the floor surface of the vertical pipe 2 and at the vertical section 32 of the horizontal pipe 3.

The vertical pipe 2 is a pipe that penetrates the upper and lower floors of a multi-story building and extends in the vertical direction, and a coupling member 5 is attached below the connection between the horizontal piping 3 and the vertical pipe 2, at a height near the floor surface of the inspection work floor and several floors below.
The horizontal pipe 3 is extended substantially horizontally near the ceiling surface of each floor, with one end connected to the standpipe 2 and the other end formed with a cleaning port 31. The horizontal pipe 3 has a vertical section 32, which is a pipe body disposed in the vertical direction, between the branch pipe 4 closest to the standpipe 2 and the connection section with the standpipe 2. The vertical section 32 adjusts the height position when the horizontal pipe 3 and the standpipe 2 are connected. In this embodiment, a joint member 5 is attached to the vertical section 32.
The branch pipes 4 are provided at a plurality of locations on the horizontal piping 3 and are connected to each air conditioning device (not shown) to discharge drainage generated during use of the air conditioning device into the horizontal piping 3.

The joint member 5 is a joint connected to the vertical section 32 of the vertical pipe 2 and the horizontal pipe 3, and has an inspection hatch 51, a blocking member 52, and an inspection equipment connection section 53. Note that each joint member 5 attached to the vertical pipe 2 and the horizontal pipe 3 is the same member, and therefore the same numbers are used and the description thereof is omitted.
The blocking member 52 is a plate-shaped member that is in close contact with the flow path inside the joint member 5, and is detachable from the inspection hatch 51 into the joint member 5. After the leakage inspection is completed, the flow path inside the standpipe 2 can be opened by removing the blocking member 52 from the joint member 5.
The inspection equipment connection part 53 is an opening to which the inspection equipment 6 described later is connected, and the pressurized air of the inspection equipment 6 is sent from the inspection equipment connection part 53 into the piping 1. When the inspection equipment 6 is not connected, the inspection equipment connection part 53 is closed by a stopcock.

The inspection device 6 has a compressor and a pressure measuring device. The inspection device 6 uses the compressor to send pressurized air into the pipe 1 via the inspection device connection part 53, increasing the pressure inside the pipe 1, and measures the pressure fluctuations inside the pipe 1 with the pressure measuring device.

The method of inspecting the pipe 1 for leaks using the inspection equipment 6 will be described below. In the second embodiment, the horizontal pipes 3 are installed first on each floor, and then the vertical pipe 2 is installed. Therefore, the inspection for leaks is also performed after the inspection of the horizontal pipes 3, and then the vertical pipe 2. The joint member 5 attached to the vertical section 32 is installed so that the inspection equipment connection part 53 is located upstream of the blocking member 52. On the other hand, the joint member 5 attached to the vertical pipe 2 is installed so that the inspection equipment connection part 53 is located downstream of the blocking member 52.

First, a method for inspecting the horizontal pipe 3 for water leakage will be described.
First, the cleaning port 31 formed at the other end of the horizontal pipe 3 and all of the branch pipes 4 are closed, and all open parts of the horizontal pipe 3 are closed. Next, a blocking member 52 is attached to the joint member 5 attached to the vertical section 32 of the horizontal pipe 3 through the inspection port 51, and the flow path from the inspection equipment connection part 53 to the vertical pipe 2 is blocked. At this time, the flow paths in the horizontal pipe 3 and branch pipes 4 on the inspection work floor are sealed off.
Next, the inspection equipment 6 is connected to the inspection equipment connection part 53 of the joint member 5, pressurized air is sent into the pipe 1 by a compressor, and the change in air pressure in the pipe 1 for a specified time is measured by a pressure measuring device. At this time, if no fluctuation in air pressure is measured in the pipe 1, or if the decrease is within the allowable range, it is determined that there is no leakage in the flow path in the pipe 1, and the water leakage inspection of the horizontal pipe 3 is terminated. After the work is completed, the connection between the inspection equipment 6 and the joint member 5 is released, and the inspection equipment connection part 53 is blocked by a stopcock. Then, with the blocking member 52 remaining in place in the joint member 5, water leakage inspection of the horizontal pipes 3 on other floors is performed using the same procedure.

Next, a method for inspecting the vertical pipe 2 for water leakage will be described with reference to FIG.
First, for the horizontal piping 3 on each floor for which the leakage inspection has been completed by the above process, the fitting members 5 attached to the vertical pipes 2 on the upper and lower floor sides are fitted with the blocking members 52 through the inspection hatches 51. At this time, the flow paths of the vertical pipes 2 between the fitting members 5 are sealed.
Next, the inspection device 6 is connected to the inspection device connection part 53 of the joint member 5 arranged on the upper floor side, and pressurized air is sent into the pipe 1 by the compressor in the same manner as in the inspection of the water leakage from the horizontal pipe 3, and the change in the air pressure in the pipe 1 for a predetermined time is measured by the pressure measuring device. At this time, the blocking member 52 is still attached to the joint member 5 attached to the vertical part 32 of each floor, so that the sent pressurized air fills only the vertical pipe 5. After the work is completed, the connection between the inspection device 6 and the joint member 5 is released, the inspection device connection part 53 is blocked by a stopcock, and the blocking member 52 is removed from each joint member 5 to open the flow path. If a water leakage inspection is to be performed on a further upper floor, the blocking member 52 is left in place only on the joint member 5 attached to the upper floor side of the vertical pipe 2, and the inspection on the further upper floor is performed.

After the above-mentioned leak inspection is completed, the ceiling surface of each floor is formed below the connection between the horizontal pipe 3 and the vertical pipe 2 at the height position shown by the two-dot chain line in Figure 2.

In the above-mentioned second embodiment, a vertical section 32 is provided on the horizontal piping 3, and the vertical section 32 is equipped with an inspection equipment connection section 53 that is connected to the inspection equipment 6. Since the distance between the inspection equipment 6 and the inspection equipment connection section 53 is short, leakage inspection can be easily performed.
Furthermore, when inspecting for water leakage from the standpipe 2, the standpipe 2 near the floor surface of the inspection floor is provided with an inspection equipment connection part 53 for connection to the inspection equipment 6, so that the water leakage inspection can be easily performed with the inspection equipment 6 placed on the floor of the inspection floor. In particular, the joint member 5 is attached below the connection part between the horizontal pipe 3 and the standpipe 2, and the inspection equipment connection part 53 is provided, so that the water leakage inspection can be easily performed.
In the second embodiment, after inspecting the horizontal pipes 3 for leaks in sequence starting from the lower floor, it becomes possible to inspect the standpipes 2 of the lower floors all at once starting from the upper floor. Therefore, since the inspection equipment 6 that has been moved to the upper floor can inspect the standpipes 2 for leaks without having to be moved back to the lower floor, the movement of the inspection equipment 6 can be minimized.

The above are embodiments of the present invention, but the leak detection method of the present invention is not limited to the methods described in the above embodiments, and various design changes may be made without departing from the spirit of the invention.

For example, in the first embodiment described above, the joint member 5 was attached to the vertical pipe 2 near the floor surface of the inspection work floor and the floor one level above the inspection work floor, but it may also be attached to the vertical pipe 2 near the floor surface of two or more floors above the inspection work floor, allowing multiple floors to be inspected at the same time.

In the second embodiment described above, the coupling member 5 is provided with the inspection equipment connection portion 53 on the vertical portion 32 of the horizontal pipe 3, but as shown in FIG. 4, it may be arranged on a portion of the horizontal pipe 3 extending in an approximately horizontal direction.
In addition, in the above second embodiment, a leakage test was performed after the construction of the vertical pipe 2 and the horizontal pipes 3 was all completed, but if the horizontal pipes 3 are constructed first, a leakage test for the multiple horizontal pipes 3 may be performed before the construction of the vertical pipe 2, and a leakage test for the vertical pipe 2 including the connection points with the horizontal pipes 3 may be performed after the vertical pipe 2 is constructed.
In the second embodiment, the joint member 5 attached to the standpipe 2 is attached so that the inspection equipment connection part 53 is located below the blocking member 52, but the inspection equipment connection part 53 may be attached so that it is located above the blocking member 52. In this case, the floor on which the joint member 5 attached to the lower side of the standpipe 2 is located is set as the inspection work floor, and leak inspection may be performed by sending pressurized air from the lower joint member 5 toward the upper floor.

Reference Signs List 1 Pipe 2 Standpipe 3 Horizontal pipe 31 Cleaning port 32 Vertical section 4 Branch pipe 5 Joint member 51 Inspection port 52 Blocking member 53 Inspection equipment connection section 6 Inspection equipment

Claims (4)

A method for inspecting pipes for leaks in a multi-story building, comprising the steps of:
The piping of the building includes a vertical pipe that penetrates multiple floors vertically,
A horizontal pipe connected to the vertical pipe and arranged substantially horizontally near the top surface of each floor;
A branch pipe for connecting to an air conditioning device, the branch pipe being provided on the horizontal pipe;
It consists of:
The vertical pipe is provided near the floor surface of the inspection work floor with an inspection equipment connection portion for supplying pressurized air from the inspection equipment,
Blocking the flow path in the standpipe to be inspected;
With respect to the horizontal pipe, an open portion of the horizontal pipe including the branch pipe end portion is blocked;
Connect the inspection equipment to the inspection equipment connection section, and pressurize the inside of the vertical pipe by feeding pressurized air from the inspection equipment. Based on the change in air pressure in the piping , determine whether there is a leak in the vertical pipe and the horizontal pipe .
A method for inspecting for water leakage, characterized in that the flow path on the upper floor side of the flow path in the vertical pipe is kept blocked, and the next water leakage inspection is carried out on a floor above the inspection work floor as a new inspection work floor . A method for inspecting pipes for leaks in a multi-story building, comprising:
The piping of the building includes a vertical pipe that penetrates multiple floors vertically,
A horizontal pipe connected to the vertical pipe and arranged substantially horizontally near the top surface of each floor;
A branch pipe for connecting to an air conditioning device, the branch pipe being provided on the horizontal pipe;
It consists of:
an inspection equipment connection portion for supplying pressurized air from an inspection equipment to the horizontal pipe;
A method for inspecting for water leaks, comprising the steps of: blocking an open portion of the horizontal piping, including the end of the branch pipe of the horizontal piping, and a flow path from the inspection equipment connection portion to the vertical pipe; connecting the inspection equipment to the inspection equipment connection portion; sending pressurized air from the inspection equipment to pressurize the horizontal piping; and determining whether or not there is a leak in the horizontal piping based on the change in air pressure in the piping. The horizontal piping is
3. The method for inspecting water leaks as described in claim 2 , characterized in that a vertical section in which a pipe body is arranged in a vertical direction is provided between the branch pipe closest to the vertical pipe and the connection section with the vertical pipe, and the inspection equipment connection section is provided on the vertical section. A method for inspecting pipes for leaks in a multi-story building, comprising the steps of:
The piping of the building includes a vertical pipe that penetrates multiple floors vertically,
A horizontal pipe connected to the vertical pipe and arranged substantially horizontally near the top surface of each floor;
A branch pipe for connecting to an air conditioning device, the branch pipe being provided on the horizontal pipe;
It consists of:
The vertical pipe is provided near the floor surface of the inspection work floor with an inspection equipment connection portion for supplying pressurized air from the inspection equipment,
A method for inspecting for water leaks, comprising the steps of: blocking the flow paths between the horizontal piping on each floor and the connection with the standpipe , and the flow paths within the standpipe to be inspected; connecting the inspection equipment to the inspection equipment connection portion; sending pressurized air from the inspection equipment to pressurize the inside of the standpipe ; and determining whether or not there is a leak in the standpipe based on the change in air pressure within the piping .

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