JPH11210975A - Connecting fitting and piping system of building - Google Patents

Abstract

PROBLEM TO BE SOLVED: To diagnose a system with continuous water by providing a three way valve installed in a part of a piping and a connecting joint for connecting an idle opening of the three way valve with an endoscope delivery hole of an endoscope diagnosing device. SOLUTION: A connecting fitting is used which is equipped with a three way valve installed in a part of a piping and a connecting joint for connecting an idle opening of the three way valve with an endoscope delivery hole of an endoscope diagnosing device. The endoscope delivery hole and be connected with the idle opening of the three way valve. Then, by changing over the three way valve and inserting an endoscope into the piping in the continuous water state, the system can be diagnosed. Because in a piping system where the three way valve 37 is installed in a sharing branch pipe, water is fed, and is stored in the idle opening 57 of the three way valve 37, connecting hole of the connecting joint 40 only during diagnosis work, generation of rust can be restrained and the generation of red water can be prevented. The connection of the endoscope diagnosing device 35 with the three way valve 37 is easily performed with one touch by insertingly fitting a male member 61 and a female member 63 mutually.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fitting for connecting an endoscope diagnostic device for diagnosing the inside of a pipe of a building with an endoscope to the pipe and a pipe system of the building.

[0002]

2. Description of the Related Art In general, equipment and piping of a building such as an apartment house deteriorate over time. In particular, deterioration of a water supply pipe or the like causes red water due to corrosion or the like, and the pipe becomes blocked or leaks due to rust. . Investigate the phenomenon, extent, and factors of such deterioration
Conventionally, in order to make a diagnosis by non-destructive inspection, an endoscope was used and inserted into a water supply pipe to directly observe the inside of the pipe to evaluate and determine the deterioration state.

[0003]

By the way, the above investigations
Diagnosis is preferably made with uninterrupted water. In such a case, for example, a water stop valve is connected to a T-tube provided in advance in a part of the water supply pipe, and at the time of diagnosis, the endoscope diagnostic device is connected to the water stop valve with a flange pipe or the like, and then the water stop valve is stopped. If the valve is opened and the endoscope is inserted into the water supply pipe, diagnosis can be made without interruption.
However, according to this diagnostic method, a water stop valve is connected to the connection port of the T-tube, so that water that does not flow constantly is stored in the connection port, which causes rust inside the connection port. Become. Furthermore, this rust causes red water to be generated, and this red water is supplied to each home at the time of diagnosis, and diagnosis with uninterrupted water becomes meaningless.

Accordingly, the present invention has been made in order to solve the above-mentioned problems, and there is provided a connection fitting and a building capable of diagnosing undisturbed water without generating red water or the like on existing piping. To provide a piping system.

[0005]

SUMMARY OF THE INVENTION A connection fitting according to the present invention is a connection fitting for connecting an endoscope diagnostic device for diagnosing the inside of an existing pipe to the existing pipe, and is provided at a part of the existing pipe. And a connection joint for connecting the play port of the three-way valve and the endoscope feed-out port of the endoscope diagnostic apparatus.

[0006] According to this configuration, in order to diagnose the inside of the existing pipe, as a means for connecting the existing pipe and the endoscope diagnostic device, a three-way valve provided in a part of the existing pipe and a play of the three-way valve are provided. By using a connection fitting having a connection joint for connecting the mouth and the endoscope feeding port of the endoscope diagnostic apparatus, it becomes possible to connect the endoscope feeding port to the play port of the three-way valve, and then to connect the three-way valve to the play port. By switching the valve, the endoscope can be inserted into the existing pipe in a state of uninterrupted water and diagnosed. Also,
Water supply or the like always flows through the entrance of the three-way valve, but no water flows through the play port except during diagnosis. That is, since water supply or the like does not accumulate on the play port side to which the endoscope feeding port is connected at the time of diagnosis and the generation of rust can be suppressed as much as possible, the generation of red water can be prevented. .

In this case, the connection joint is composed of a male member and a female member which can be attached and detached with one touch. One of the male member and the female member is watertightly mounted on the play port, and the other is provided on the endoscope feeding port. Preferably, it is mounted watertight.

According to this construction, the connection joint comprises a male member and a female member which can be detached with one touch, one of which is a play port of a three-way valve, and the other is an endoscope feeding port of an endoscope diagnostic apparatus. The three-way valve can be easily connected to the endoscope diagnostic device. Therefore, the endoscope diagnostic device can be easily attached to and detached from the three-way valve during the diagnostic work inside the existing pipe, so that the connection becomes easy and the working efficiency can be improved.

[0009] Further, the building piping system of the present invention is characterized in that a three-way valve for connecting an endoscope diagnostic device for diagnosing the inside of the piping is interposed in a part of the building piping.

According to this configuration, the three-way valve for connecting the endoscope diagnostic device for diagnosing the inside of the pipe is interposed in a part of the pipe of the building. The diagnostic device can be connected to the play port of the three-way valve, and the inside of the pipe can be diagnosed without interruption. That is,
By arranging a three-way valve in a part of the pipe, appropriate diagnosis can be performed without cutting the pipe at the time of diagnosis.

In this case, the pipe has a horizontal drawing main pipe, a plurality of standing pipes branching from the horizontal drawing main pipe, and a plurality of branch pipes branching from each standing pipe. Preferably, it is interposed near the branch of the pipe.

According to this structure, the branch pipe is generally formed to have a diameter smaller than the diameter of the main pipe and the standing pipe, so that the three-way valve is interposed near the branch portion of the branch pipe, whereby the three-way valve is provided. Can be made smaller in accordance with the diameter of the branch pipe, and cost reduction can be achieved. In addition, by guiding the endoscope inserted from the branch tube to the standing tube or the main tube for horizontal pulling, there is no trouble in diagnosis of the standing tube or the main tube for horizontal drawing.

Further, in this case, it is preferable that the three-way valve is provided in the vicinity of the branch portion of the branch pipe on the floor closest to the horizontal drawing main pipe.

According to this configuration, the three-way valve is interposed in the vicinity of the branch portion of the branch pipe on the floor closest to the horizontal drawing main pipe, so that the endoscope inserted from the branch pipe can be used only at the distal end of the branch pipe. It can be efficiently guided to a standing pipe or a horizontal main pipe.

Further, in this case, it is preferable that the three-way valve is disposed in the pipe shaft of the branch pipe.

According to this configuration, the three-way valve is interposed in the vicinity of the branch portion of the branch pipe provided in the pipe shaft, so that the endoscope diagnostic apparatus is connected to the three-way valve during a diagnostic operation. Can secure a sufficient installation space, and can efficiently perform the diagnosis work inside the piping.

[0017]

BRIEF DESCRIPTION OF THE DRAWINGS FIG.
A connection fitting and a building piping system according to the first embodiment of the present invention will be described.

Generally, in a building having a plurality of floors, such as an apartment house, an apartment, a school, etc., equipment pipes such as water supply and drainage pipes required by residents of each floor are installed. As shown in FIG. 1, taking a piping system diagram of a water supply pipe of an apartment house 1 as an example, a water supply pipe 3 extends from a tank 5 and a pressurized water supply device 7 installed outdoors to rooms on each floor. Specifically, the horizontal main pipe 9 extending from the pressurized water supply device 7 through the basement, a plurality of vertical pipes 11 branching from the horizontal main pipe 9 for supplying water to each floor, and each vertical pipe 11 And a branch pipe 13 for branching and supplying to each room. The standing pipe 11 is disposed in a pipe shaft 15 described later.

A plurality of pipe shafts 15 are provided on each floor for two dwelling units, and are disposed at the same position on each floor. A door (not shown) is provided on the pipe shaft 15, and serves as a piping space for the equipment piping (particularly, the standing pipe 11) and an inspection space. As shown in FIG. 2, as a water supply system, a pipe 11 has a standing pipe 11 branched from the horizontal main pipe 9, a shared branch pipe 17 branched from the standing pipe 11,
A branch pipe 19 for a dwelling unit branched into two from the common branch pipe 17,
19 and a water control valve 21 and a water meter 23 are installed so as to be interposed in each branch pipe 19 for dwelling units.

The pipe shaft 15 has a gas system as a gas system.
And a gas branch pipe 29 branched from the gas sharing pipe 27, and a gas cock 31 and a gas meter 33 are disposed so as to be interposed in the gas branch pipe 29. The branch pipe 13 includes a common branch pipe 17 and a branch pipe 19 for dwelling units, and each of the branch pipes 17 and 19 is formed to have a smaller diameter than the diameter of the standing pipe 11 and the horizontal drawing main pipe 9. I have.

A three-way valve 37 for connecting to an endoscope diagnostic device 35 to be described later is provided in the vicinity of a branch portion of the common branch pipe 17 from the standing pipe 11. Three-way valve 37
Is provided only in the pipe shaft 15 provided on the first floor of the building, and when diagnosing the inside of the pipe, the endoscope diagnostic device 35
Connect with In addition, since it is not particularly used except during the diagnostic work, it is preferable to cover the box (not shown) or to provide a chain for making it inoperable to prevent tampering.

Here, the connection fitting 39 including the three-way valve 37 for connecting the endoscope diagnosis device 35 will be described. Before that, the endoscope diagnosis device 35 itself will be briefly described. The endoscope diagnosis device 35 includes an endoscope device 43 including a cable-shaped endoscope 41, and an endoscope that feeds out the endoscope 41 from the endoscope device 43 and sends the endoscope 41 to the inside of the pipe via the connection fitting 39. Mirror insertion device 45 and endoscope insertion device 4
And a control operation unit 47 for controlling the control unit 5.

The endoscope device 43 accommodates the endoscope 41 in a cabinet so that the endoscope 41 can be extended and wound, and a display for monitoring an image inside the pipe taken by the endoscope 41; A controller (not shown) for freely bending the distal end portion (neck portion) of the endoscope 41 is provided.

The endoscope 41 penetrates the endoscope insertion device 45 in the front-rear direction, and the endoscope insertion device 45
1 and is fed into the inside of the pipe so that it can move forward and backward. That is, the operator operates the control operation unit 47 while looking at the display of the endoscope device 43 and operates the endoscope insertion device 4.
The endoscope 41 is fed into the pipe via the pipe 5. Further, in the bent portion inside the pipe, the endoscope 41 is fed in such a manner that the controller of the endoscope device 43 is operated to bend the end of the endoscope 41. Diagnosis of the inside of the pipe is performed based on the imaging result of the endoscope 41 sent in this way.

The connection fitting 39 includes a three-way valve 37 provided in the common branch pipe 17, the three-way valve 37 and the endoscope insertion device 35.
And a connection joint 40 for connecting the endoscope feed-out port 49. The three-way valve 37 has a substantially spherical valve seat (not shown) in a casing 51 and has a substantially spherical valve body 53 rotatably fitted to the valve seat. The valve seat has a pair of connection ports 55 communicating with the common branch pipe 17.
And a play port (play port) 5 orthogonal to the connection port 55
7 are open.

In response to this, the valve body 53 includes:
A “T” -shaped flow path 58 is formed, and by rotating a handle 59 attached to one end of the valve body 53, a first position communicating the pair of connection ports 55 and an upstream connection port A second position connecting the idle port 55 to the play port 57, a third position connecting the downstream connection port (not shown) to the play port 57,
The valve can be switched between a pair of connection ports 55 and a fourth position communicating the play port 57.

In the steady state, the position is switched to the first position, and water flows from the upstream side to the downstream side via the pair of connection ports 55, while the idle port 57 is in a water-cut state. At the time of diagnosis, the position is switched to the fourth position, water is passed from the upstream side to the downstream side via the pair of connection ports 55, and the endoscope 41 can be inserted from the play port 57. That is, it is possible to diagnose the inside of the pipe in a water-free state.

As shown in FIG. 4, the connection joint 40 is constituted by a so-called coupler composed of a male member 61 and a female member 63 which can be detachably attached with one touch. Male member 61
Is screwed into the play port 57 of the three-way valve 37 to be watertight, and the female member 63 is screwed into the endoscope feeding port 49 of the endoscope insertion device 45 to be watertight. . That is, the connection between the endoscope diagnostic device 35 and the three-way valve 37 is made by inserting the female member 63 attached to the endoscope insertion device 45 side into the male member 61 attached to the play port 57 of the three-way valve 37. This is done by: Therefore, connection can be easily made with one touch.

A bearing 67 is incorporated between the female member 63 and the endoscope feed port 49, and the male member 61 and the female member 63 are connected to each other so as to be freely rotatable. That is, the female member 63 on the endoscope insertion device 45 side is rotatable with respect to the male member 61 on the three-way valve 37 side. Thereby, by rotating the endoscope insertion device 45, the endoscope 41 is rotated around the axis, and the bent portion inside the pipe can be smoothly fed by using the bending habit of the endoscope 41. I can do it. Further, the endoscope feeding port 49 is provided with a rotation stopping member 71 for winding and tightening the female member 63. By operating the handle 71a, the female member 63 can be fixed at an arbitrary rotation angle. It has become.

The female member 63 may be directly attached to the endoscope feeding port 49 without using the bearing 67 (in this case, a commercially available coupler is used), and the male member 61 is pulled out of the endoscope. The female member 63 may be attached to the play port 57 at the mouth 49. Further, the female member 6
3 and the endoscope feeding port 49 may be formed integrally.

Next, a method for diagnosing the inside of the pipe will be described with reference to FIG. First, as described above, building 1
An endoscope diagnostic device 35 is connected to a three-way valve 37 provided in the common branch pipe 17 on the floor. After that, the driving device inside the endoscope insertion device 45 is driven by the control operation unit 47, and the endoscope 4
1 is inserted into the common branch pipe 17. Here, the endoscope 41 inserted into the common branch pipe 17 is
Is inserted from the upright standing pipe 11 toward the horizontal pulling main pipe 9 and the downstream standing pipe 11 is inserted up to the top floor as it is, whereby the upright standing pipe 1 is inserted.
1 and the main line 9 are diagnosed. In addition, the endoscope 41
Is inserted from the common branch pipe 17 into the branch pipes 19, 19 for dwelling units, so that the interior of the branch pipes 19, 19 for dwelling units is diagnosed. Therefore, the endoscope diagnostic device 3
By connecting 5 to the three-way valve 37 interposed in the common branch pipe 17 on the first floor, it is possible to diagnose the entire pipe in the building.

As described above, in this embodiment, the play system 5 of the three-way valve 37 serving as the connection port of the connection joint 40 is provided by the piping system in which the three-way valve 37 is provided in the common branch pipe 17.
Since water does not flow through and water does not accumulate in the nozzle 7 other than during diagnostic work, the generation of rust can be suppressed, and the generation of red water can be prevented. Further, the connection between the endoscope diagnostic device 35 and the three-way valve 37 can be easily performed with one touch by inserting the male member 61 and the female member 63 into each other. Further, the diameter of the three-way valve 37 can be reduced to correspond to the diameter of the common branch pipe 17. It is preferable that the three-way valve 37 be incorporated when a new pipe is installed. At that time, the male member 61 may be incorporated in the three-way valve 37.

As another embodiment, a three-way valve 3
The pipe provided with 7 is not limited to the common branch pipe 17, and may be directly provided in the horizontal main pipe 9 or the standing pipe 11, for example. In such a case, since the horizontal drawing main pipe 9 is a pipe buried underground, it is preferable that a pit is appropriately formed and a space for the endoscope diagnosis device 35 is secured when diagnosing the inside of the pipe. Further, the three-way valve 37 is not limited to being provided in a pipe of a water supply system, but can be similarly provided for diagnosis of the inside of the pipe by being provided in a hot water pipe or a drain pipe.

The endoscope 41 is not limited to a fiberscope, but may be a video image scope, a rigid environment, a mini borecorp, or the like.

The above embodiment has been described by way of example for explanation, and the present invention is not limited thereto. For example, in an elevated tank type piping system (water supply pipe or the like), it is preferable to interpose the three-way valve 37 near the branch section of the branch pipes 17 and 19 on the top floor. The three-way valve 37
It is needless to say that it is more preferable to provide in the branch pipes 17 and 19 of each floor.

[0036]

As described above, according to the connection fitting and the building piping system of the present invention, since the three-way valve is interposed in a part of the piping, the inside of the piping can be diagnosed with uninterrupted water. At the same time, the play port of the three-way valve does not rust, and the generation of red water can be prevented. In addition, since the endoscope diagnostic device is connected to the three-way valve via the connection joint, the diagnostic device can be easily connected to the three-way valve with one touch, and the work efficiency can be increased.

[Brief description of the drawings]

FIG. 1 is a system diagram showing a water supply pipe as an example of a piping system in a building.

FIG. 2 is a front view showing the inside of a pipe shaft.

FIG. 3 is a side view illustrating a state in which the endoscope diagnostic device is connected to the piping system according to the first embodiment.

FIG. 4 is a partial cross-sectional view of the coupler.

[Explanation of symbols]

9 horizontal pull main pipe, 11 standing pipe, 13 branch pipe, 15 pipe shaft, 35 endoscope diagnostic device, 37 three-way valve, 3
9 connection fitting, 40 connection joint, 49 endoscope feeding port, 57 play port, 61 male member, 63 female member

Claims (6)

[Claims] 1. A connection fitting for connecting an endoscope diagnostic device for diagnosing the interior of an existing pipe to the existing pipe, comprising: a three-way valve interposed in a part of the existing pipe; A connection fitting, comprising: a connection joint for connecting a play port and an endoscope feeding port of the endoscope diagnostic device. 2. The connection joint comprises a male member and a female member which can be attached and detached with one touch. One of the male member and the female member is watertightly attached to the play port, and the other is the endoscope. 2. The connection fitting according to claim 1, wherein the connection fitting is watertightly mounted on the mirror payout opening. 3. A piping system for a building, wherein a three-way valve for connecting an endoscope diagnostic device for diagnosing the inside of the piping is interposed in a part of the piping of the building. 4. The pipe has a horizontal drawing main pipe, a plurality of standing pipes branched from the horizontal drawing main pipe, and a plurality of branch pipes branched from each standing pipe. 4. The structure according to claim 3, wherein the branch pipe is provided near a branch portion.
A plumbing system for a building as described in. 5. The piping system for a building according to claim 4, wherein the three-way valve is provided near a branch portion of the branch pipe on a floor closest to the horizontal drawing main pipe. 6. The piping system for a building according to claim 4, wherein the three-way valve is disposed in a pipe shaft of the branch pipe.