JP2000080692A - Coupling jig for testing water-full piping system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a coupling jig for testing a water-full piping system to inspect a piping system for water leakage such as a water supply system or a drain system, etc., to be laid in a building. SOLUTION: This coupling jig 20 for testing a water-full piping system inspects a piping system 1 for water leakage by charging a pipe coupling 2 with it from a peripheral wall opening part 6 of the pipe coupling 2 of the piping system 1 arranged along the vertical direction. Thereby, in this case, it is furnished with blocking means 27, 28 to seal an upper space in the pipe coupling 2 free to open and close by closely making contact with a wall surface of an upper part passage 14 of the pipe coupling 2 free to make contact with and to separate from it, sealing holding means 21, 23, 29 to hold the blocking means 27, 28 by making them closely contact with the upper part passage 14 of the pipe coupler 2 and change-over means 29, 30, 44, 50 to communicate or block the upper space in the pipe coupling 2 above the blocking means 21, 23, 29 a piping system outer space outside of the peripheral wall opening part 6 of the pipe coupling 2 positioned below the blocking means 27, 28 to and from each other free to open and close.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a jig for a piping system fullness test joint for inspecting water leakage in a piping system such as a water supply system or a drainage system laid in a building.

[0002]

2. Description of the Related Art Conventionally, a jig 01 for a water-filled test joint as shown in FIG. 11 has been used for inspecting whether or not a piping system arranged along a vertical direction leaks water. .

For example, when the pipe system is a drainage system, as shown in FIGS. 1 to 3, the lower end of the upper vertical pipe 1 and the upper end of the lower vertical pipe 1 The gasket 9 is fitted into the opening 3, the packing 9 is fitted into the opening edge 4 of the socket 3 of the pipe joint 2, and the mounting flange 10 is applied so as to press the packing 9 against the opening edge 4. A bolt 11 penetrates through the upper and lower flanges 5 and the mounting flange 10 of the pipe joint 2, and a nut 12 is screwed to the tip of the bolt 11. With this pipe joint 2, the upper and lower vertical pipes 1 They were connected to each other in a watertight and integral manner.

In addition to these pipe joints 2, ordinary branch pipe joints (not shown) are interposed at the pipe ends of the upper and lower vertical pipes 1, and these branch pipe joints are connected with connection pipes (not shown). A bath, a sink, a toilet bowl, etc. are connected via the.

An opening / closing lid 7 as shown in FIG. 3 is detachably attached to the rectangular side opening 6 of the pipe joint 2 with bolts 8 as shown in FIG. In the case of water leak inspection after construction completion and cleaning of drainage system,
The opening / closing lid 7 is removed, and the side opening 6 is opened.

Further, the pipe joint 2 has a rectangular parallelepiped having the same shape as one side of the opening of the side opening 6 from the flange 5 to the center of the pipe joint 2 toward the back. An inspection device storage space 13 having the same diameter as the width of the opening and the same shape as the semi-cylindrical body having the same height as the height of the opening of the side opening 6 is formed. A step 15 is formed at the boundary with the space 13, and the insertion portion 7a of the opening / closing lid 7 is formed.
Is formed in the same shape as the outer shape of the inspection device storage space 13, and the insertion portion 7a is formed with a cylindrical hole 7b having the same size as the inner peripheral wall surface of the end of the water passage hole 14 of the pipe joint 2.

[0007] Thus, the jig 01 for a full-water test joint is shown in FIG.
As shown in FIG. 1, a disc-shaped substrate 02 which can be engaged with the lower step portion 15 of the pipe joint 2 and a center hole provided integrally at the center of the disc-shaped substrate 02 upward. A male screw 03, a closing disk 05 which can abut on the upper step 15 of the pipe joint 2 via a rubber annular seal 04, and an on-off valve 06 provided integrally below the center of the closing disk 05; An opening / closing lever 07 for opening and closing the on / off valve 06, and a female screw 08 rotatably attached to a lower portion of the on / off valve 06 and capable of being screwed to the male screw 03. With the disc-shaped substrate 02 and the closed disc 05 approaching each other, the jig 01
Is inserted into the inspection device storage space 13 from the side opening 6 of the pipe joint 2, and the disc-shaped substrate 02 is placed in the inspection device storage space 13 of the pipe joint 2.
After the female screw 08 is screwed in the opposite direction, the rubber annular seal 04 is pressed against the upper step 15 of the inspection device storage space 13 of the pipe joint 2 by engaging the female screw 08 in the reverse direction. The space inside the vertical pipe 1 above the inspection apparatus storage space 13 of the pipe joint 2 is sealed.

Then, water is injected into the vertical pipe 1 above the pipe joint 2, and after a certain period of time, it is visually observed whether or not the water injection level in the vertical pipe 1 has dropped.
The system was designed to check for leaks in the drainage system.

[0009]

After the water leakage test is completed, the open / close valve 06 is opened by turning the open / close lever 07 by 90 ° in the jig 01 for filling test, and water is injected into the vertical pipe 1 above the pipe joint 2. Was discharged into the vertical pipe 1 below the pipe joint 2, but in such an inspection method, if the drainage pipe system below the pipe joint 2 was not completed, a special treatment for drainage treatment of injection water for inspection was performed. It was necessary to take appropriate measures.

[0010]

SUMMARY OF THE INVENTION The present invention relates to an improvement of a jig for a pipe-filled full-water test joint which overcomes such difficulties, and the invention according to claim 1 is arranged along a vertical direction. A jig for a piping system fullness test fitting, which is inserted into the pipe joint through a peripheral wall opening of the installed pipe system pipe fitting and inspects whether or not there is water leakage in the piping system, comprises: A closing means capable of contacting and separating the wall surface so as to be able to open and close the upper space in the pipe joint, an airtight holding means for holding the closing means in close contact with an upper passage of the pipe joint, An upper space in the pipe joint above the closing means,
And a switching means for opening and closing to or from the outer space of the piping system outside from the peripheral wall opening of the pipe joint located below the closing means.

According to the first aspect of the present invention, the closing means is brought into close contact with the wall surface of the upper passage of the pipe joint, and the closed state is held by the closed holding means, In a state where the switching means is shut off, water can be injected into the piping system above the pipe joint, and a change in the water level after a predetermined time has elapsed can be inspected for the presence of water leakage in the piping system. After the end of the water leakage inspection, the switching means is operated to communicate the upper space in the pipe joint with the outer space of the pipe system, thereby injecting water for inspection in the pipe system above the pipe joint. Can be discharged. For this reason, even if the piping system below the pipe joint is not completed, or even if this piping system is completed,
Even if the lower end of the piping system is not subjected to drainage receiving treatment, it is possible to prevent the inspection drainage from being guided to the piping system below the pipe joint by a very simple switching operation. Inspection wastewater scatters from the system to the outside,
Alternatively, it is possible not only to prevent the environment around the piping system from getting wet with the inspection wastewater, but also to prevent the environment from being contaminated.

Further, by configuring the present invention as described in claim 2, the switching means can be easily formed with simple components, and a jig for a low-cost full test joint can be obtained.

Further, by configuring the invention as described in claim 3, it is possible to freely discharge the inspection wastewater in the piping system above the pipe joint to a required location in the space outside the piping system. it can.

Further, according to the present invention, the wall surface of the upper passage of the pipe joint and the abutment surface of the closing means are brought into tighter contact with each other, and the watertightness of this portion is improved. , And the reliability and accuracy of the water leakage inspection can be further improved.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention shown in FIGS. 4 to 9 will be described below.

The jig 20 for the piping system full test joint of the present embodiment
7 and 8, the center hole 22 of the disc-shaped substrate 21 supported by being engaged with the step 15 below the pipe joint 2. As shown in FIG.
The adjusting female screw 23 is rotatably fitted to the disk-shaped substrate 21.
A circumferential groove 25 is formed on the outer peripheral portion of the sleeve 24 of the adjusting female screw 23 protruding downward, and a circlip is formed in the circumferential groove 25.
26 are engaged.

A rubber annular seal 27 is integrally adhered to the outer peripheral portion of the upper surface of the closing disk 28, and a spherical valve seal 30 is formed in the valve box portion 30 of the switching valve 29 integrally formed below the closing disk 28. Valve 35
Is inserted through a ring-shaped nylon seal 38, and an upper thread portion 40 of a male screw body 39 is integrally screwed into a lower opening female screw hole 31 of the valve box portion 30. A ring-shaped nylon seal 43 is interposed between the valve body 35 and the valve body 35.

Further, as shown in FIG.
A front opening female screw hole 32 is formed in the front part of 30, and a screw part 45 of a valve shaft pivot support 44 is screwed into the front opening female screw hole 32, and a through hole 46 of the valve shaft pivot support 44. The valve shaft 47 is inserted, the engagement ridge 48 at the tip of the valve shaft 47 is engaged with the engagement notch 37 of the valve body 35, and the circlip 51 is engaged with the front and rear circumferential groove 49 of the valve shaft 47. The operation lever 50 is spline-fitted to the valve shaft 47.

Further, as shown in FIG. 8, a side opening female screw hole 33 is formed in a side portion of the valve box 30, and a joint 52 is screwed into the side opening female screw hole 33. A plastic drain pipe 54 that can be bent is fitted to the outer end of the joint 52.

The lower screw portion 41 of the male screw body 39 is screwed to the adjusting female screw 23. When the adjusting female screw 23 is screwed to one side, the lower screw portion 41 is lowered with respect to the adjusting female screw 23. When the disk-shaped substrate 21 and the closing disk 28 approach each other, and the adjusting female screw 23 is screwed in the opposite direction, the lower screw portion 41 rises above the adjusting female screw 23, and Plate substrate 21 and closed disk 28
And are separated.

Since the embodiment shown in FIGS. 4 to 9 is configured as described above, the valve passage 36 of the valve body 35 is not moved when the operating lever 50 is turned rightward, as shown in FIGS. And in the direction shown in FIG.
Not only is not communicated with the drain passage 53 of the joint 52 via the valve passage 36 of the valve body 35, but also is not communicated with the water passage 42 of the male screw body 39 and is shut off.

Then, the adjusting female screw 23 is screwed in one direction, the male screw body 39 is screwed deeply into the adjusting female screw 23, and the disk-shaped substrate 21 and the closing disk 28 are brought close to each other. After the flange 5 of the pipe joint 2 is inserted into the inspection apparatus housing space 13 of the pipe joint 2 and the outer peripheral portion of the disc-shaped substrate 21 is engaged with the lower circumferential groove 25, the adjusting female screw 23 is When the tip of a rod (not shown) is inserted into the radial hole 23a (see FIG. 7), the rod is turned in the horizontal direction, and the adjusting female screw 23 is screwed in the opposite direction. The rubber annular seal 27 abuts on the upper circumferential groove 25 in the inspection apparatus housing space 13 of the pipe joint 2, and this contact portion is strongly pressed, so that the upper receiving portion 3 of the pipe joint 2 and the upper receiving section 3 are in contact with each other. The space inside the vertical pipe 1 is shut off from the inspection apparatus storage space 13 of the pipe joint 2 in a watertight manner.

In the shut-off state of the pipe joint 2, water is injected into the piping system above the pipe joint 2 to fill the pipe system, and after checking the water level, it is determined whether or not the water level has changed after a predetermined time has elapsed. If there is no change in the water level, it can be determined that there is no water leakage.

If there is a change in the water level, there is a leak, so the entire piping system must be examined to find the leak location.

In order to discharge the water in the vertical pipe 1 above the pipe joint 2 after the end of the water leakage inspection, the leading end of the drain pipe 54 is guided to a required container or drain, and then the operation lever 50 is turned clockwise or When turned 180 ° counterclockwise, the valve 35 of the switching valve 29
9A, the drain hole 34 of the switching valve 29 and the drain passage 53 of the joint 52 are communicated via the valve passage 36 of the valve body 35.

As a result, the water injected into the vertical pipe 1 above the pipe joint 2 can be discharged to a required container or drain through the switching valve 29 and the drain pipe 54.

When the operation lever 50 is rotated by 180 °, the valve element 35 of the switching valve 29 is turned to the direction shown in FIG. 9B or 9D, and the upper and lower drain holes 34 and the water passage holes 42 are temporarily connected. Water may flow into the water passage hole 42, but since this communication time is extremely short, the amount of waste water discharged from the water passage hole 42 is extremely small. Can be wiped off.

Then, the operation lever 50 is turned by 90 ° to connect the drain hole 34 and the water passage hole 42, and the conventional jig for a water filling test joint is formed.
Similarly to 01, the water injection can be discharged into the vertical pipe 1 below the pipe joint 2.

However, in order to reliably prevent water from being discharged into the vertical pipe 1 below the pipe joint 2 through the water hole 42, the water hole 42 is closed with a stopper (not shown) or the diameter of the water hole 42 is reduced. If one of the valve passages 36a and 36b in the direction is closed, the water injected into the vertical pipe 1 above the pipe joint 2 can be discharged to a drainage passage or the like via the drainage pipe 54.

The switching valve 29 may be configured as shown in FIG. 10. In this switching valve 29, as shown in FIG. 10-C or FIG. The drain hole 34 can be closed and the switching valve 29 can be switched as shown in FIG. 10-A to communicate the drain hole 34 and the drain passage 53 in the same manner as in FIG. 9-A. Valve 29 in FIG.
-B, the drainage holes are switched as in Figs. 9-B and 9-D.
34 and the water hole 42 can be communicated.

[Brief description of the drawings]

FIG. 1 is a front view of a pipe joint to which a jig for a piping system fullness test joint of the present invention can be applied.

FIG. 2 is a longitudinal sectional view taken along the line II-II of FIG.

FIG. 3 is a perspective view of an opening / closing lid of the pipe joint shown in FIG. 1;

FIG. 4 is a longitudinal sectional front view showing a state in which a jig for a piping system fullness test joint of the present invention is mounted on the pipe joint.

FIG. 5 is a vertical sectional side view of FIG. 4;

FIG. 6 is a front view of a jig for a piping system fullness test joint.

FIG. 7 is a vertical sectional side view taken along the line VII-VII of FIG. 6;

8 is a vertical sectional front view of FIG. 7;

FIG. 9 is an explanatory sectional view illustrating a switching state of a switching valve.

FIG. 10 is a sectional view of a main part of a switching valve according to another embodiment.

FIG. 11 is a side view of a conventional jig for a full water test joint.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Vertical pipe, 2 ... Pipe joint, 3 ... Receiving part, 4 ... Opening edge, 5
... Flange, 6 ... Side opening, 7 ... Opening / closing lid, 8 ... Bolt, 9 ... Packing, 10 ... Mounting flange, 11 ... Bolt,
12 ... nut, 13 ... inspection device storage space, 14 ... water hole, 15 ...
Step, 16… End face, 20… Piping system fullness test fitting jig, 21…
Disc substrate, 22 center hole, 23 adjusting female screw, 24 sleeve, 25 circumferential groove, 26 circlip, 27 annular rubber seal, 28 closing disc, 29 switching valve, 30 … Valve case, 31…
Lower opening female screw hole, 32 ... front opening female screw hole, 33 ... side opening female screw hole, 34 ... drainage hole, 35 ... valve body, 36 ... valve passage, 37 ...
Engagement notch, 38: seal, 39: male screw, 40: upper screw, 41: lower screw, 42: water hole, 43: seal, 44: valve shaft pivot, 45: screw, 46 ... through-hole, 47 ... valve shaft, 48 ... engaging ridge, 49 ... circumferential groove, 50 ... operating lever, 51 ... circlip, 52 ... coupling, 53 ... drain passage, 54 ... drain pipe.

 ────────────────────────────────────────────────── ─── Continuation of the front page (72) Fumio Kusano Inventor F-term (reference) 2D060 AC03 2D061 AA04 AB05 AD01 in the 6th floor of Daiwa Corporation, 3-1-13 Nihonbashi Honcho, Chuo-ku, Tokyo

Claims (4)

[Claims] 1. A piping system filling test joint which is inserted into a piping system through a peripheral wall opening of the piping system and is installed along the vertical direction to check for leakage of the piping system. In the jig, a closing means which can be in close contact with the wall surface of the upper passage of the pipe joint so as to be able to freely come and go, and which can open and close the upper space in the pipe joint, and A sealing and holding means for holding closely, an upper space in the pipe joint above the closing means, and a pipe system outer space outside from a peripheral wall opening of the pipe joint located below the closing means. A jig for a piping system water-filled test joint, comprising: a switching means for communicating or shutting openably and closably. 2. The valve according to claim 1, wherein the switching means includes an on-off valve disposed in a communication passage extending from the upper space in the pipe joint to the peripheral wall opening of the pipe joint through the closing means, and a pipe joint of the communication path. 2. A joint for a piping system fullness test according to claim 1, wherein one end is connected to the peripheral wall opening side end and a communication member is extended through said opening to said piping system outer space. Utensils. 3. The jig according to claim 2, wherein at least a part of the communication member is formed of a flexible tube. 4. The contact portion of the closing means is formed of an elastic body, and the elastic contact portion of the closing means can contact the lower end surface of the upper passage of the pipe joint so as to be freely separated. The jig for a piping system fullness test joint according to claim 1.