JP2013117510A - Leakage inspection device for drainage equipment - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent an annular packing provided inside an upper end opening part of a collecting pipe coupling chiefly during leakage inspection.SOLUTION: A section closing member 11 capable of closing a fixed section around a collecting pipe coupling 6 is provided and a pressurized fluid supply source 12 is provided as a leakage inspection device to drainage equipment 2 including a drainage vertical pipe 4, a drainage horizontal pipe 5 and the collecting pipe coupling 6. The section closing member 11 is provided with a lower closing member 13, an upper closing member 14 and a side closing member 15. The upper closing member 14 is provided with a contact part 21 that can be attached to an upper end opening part 6b of the collecting pipe coupling 6 in contact from above, and a fixing part 22 that can fix the contact part 21 to the collecting pipe coupling 6. Further, a seal member 23 is placed between the contact part 21 and an end face of the upper end opening part 6b of the collecting pipe coupling 6.

Description

  The present invention relates to a leak inspection apparatus for a drainage facility provided in a building.

  Drainage facilities are provided in multi-story buildings such as apartment houses, office buildings and hotels. This drainage system consists of a drainage pipe that penetrates each level of the building up and down, a drainage horizontal pipe that extends laterally at each level of the building, and a collecting pipe that connects these drainage pipes and the horizontal drainage pipe And a joint.

  In such a drainage facility, a full water test is generally performed in order to inspect leakage of drainage in a drainage vertical pipe or a drainage horizontal pipe. In this full water test, for example, a part of the drainage pipe including the above-mentioned collecting pipe joint is closed with a full water joint or a rubber test ball balloon, and the drainage horizontal pipe communicating with the blocked drainage pipe is closed. It is closed with a plug, and water is injected into the full state from the upper part of the closed drainage vertical pipe or the uppermost drainage horizontal pipe to check for water leakage.

  However, in such a full water test, the problem of having to install a full water joint that can only be used for the full water test, and the full water test is often performed when the water supply and drainage facilities are incomplete. There was a problem that it was difficult to secure the water used for the full water test and to dispose of the used water.

  Therefore, means for performing a leakage inspection using a pressurized fluid such as pressurized air instead of the above-described full water test has been proposed (see, for example, Patent Document 1 and Patent Document 2).

Japanese Patent Laid-Open No. 02-212733 Japanese Patent No. 3476187

  However, the leakage inspection means described in Patent Document 1 closes a part of the drainage stand for each floor by suspending a closing member in the drainage stand from the upper part of the building, and closes the blocked drainage stand. The end of the horizontal drain pipe communicating with the pipe is closed, and pressurized air is injected into the closed section by the pressurized air supply means provided at the top of the building. There was a problem that work efficiency was poor because the location and the floor where leakage inspection was performed were different.

  On the other hand, in the leakage inspection means described in Patent Document 2, the operation is performed for each floor, so that the position where the operation is performed and the floor where the leakage inspection is performed are made the same to improve the work efficiency. However, the closing member of Patent Document 2 is closed by using an annular packing provided inside the upper end opening of the collecting pipe joint. There was a risk of damaging the packing.

  As described above, if the ring packing of the drainage vertical pipe is damaged during the leak inspection, the operation of the drainage facility after the completion of the building will be hindered. However, there is a problem that cannot be adopted.

  In order to solve the above-mentioned problem, the invention described in claim 1 includes a drainage vertical pipe penetrating vertically through each level of a building, a horizontal drainage pipe extending in a horizontal direction for each level of the building, For a drainage facility equipped with a drainage pipe joint that can connect a drainage vertical pipe and a drainage horizontal pipe, the lower end opening of the drainage pipe joint is connected to the upper end of the lower drainage vertical pipe while the drainage equipment is being constructed. A fixed fluid supply source capable of supplying pressurized fluid to the inside of the section closed by the section closing member is provided while being fixed and provided with a section closing member capable of closing the periphery of the collecting pipe joint for a certain section. The section closing member includes a lower closing member capable of closing the inside of the lower drainage pipe, an upper closing member capable of closing the upper end opening of the collecting pipe joint, and a side opening of the collecting pipe joint Or the side part which can block | close the edge part of the drainage horizontal pipe connected to this side part opening part In the drainage inspection apparatus for a drainage facility provided with a blocking member, the upper blocking member includes a contact portion that can be placed in contact with the upper end opening of the collecting pipe joint from above, and the corresponding contacting portion. A fixing portion that can be fixed to the pipe joint, and a seal member capable of sealing the upper end opening portion interposed between the abutting portion and an end surface of the upper end opening portion of the collecting pipe joint. It is characterized by.

According to a second aspect of the present invention, in the above, the fixing portion is a winding fixing member that can be wound around the outer periphery of the collecting pipe joint, and the contact portion is connected and fixed to the winding fixing member. And a possible connecting member.
According to a third aspect of the present invention, in the above, the fixing portion is screwed to the outer peripheral surface of the metal fixing bracket and a ring-shaped metal fixing bracket that can be fitted to the outer periphery of the collecting pipe joint from above. A plurality of protruding fixing members in the circumferential direction that can be press-fixed to the outer periphery of the collecting pipe joint by protruding the tip portion toward the inner periphery of the metal fixing bracket, and the upper end surface of the contact portion and the metal fixing bracket And a fastening member that can be fastened and fixed from above, and the seal member is an O-ring.

  According to invention of Claim 1, the following effects can be acquired by the said structure. That is, the upper closing member is attached by placing the contact portion in contact with the upper end opening of the collecting pipe joint from above and fixing the contacting portion to the collecting pipe joint with the fixing portion. At this time, a seal member interposed between the contact portion and the end face of the upper end opening of the collecting pipe joint seals the upper end opening of the collecting pipe joint. Accordingly, the annular packing provided inside the upper end opening of the collecting pipe joint is not closed, so that the annular packing can be prevented from being damaged by the upper closing member. Therefore, it becomes possible to operate the drainage facility without any trouble after the building is completed.

According to invention of Claim 2, the following effects can be acquired by the said structure. That is, the fixing portion includes a winding fixing member that can be wound and fixed around the outer periphery of the collecting pipe joint, and a connecting member that can connect and fix the contact portion to the winding fixing member. By winding and fixing the winding fixing member around the outer periphery of the winding member and connecting and fixing the contact portion to the winding fixing member using the connecting member, the contact portion can be easily fixed to the collecting pipe joint. And after completion | finish of a leak test | inspection, these can be easily removed and removed.
According to invention of Claim 3, the following effects can be acquired by the said structure. That is, by providing a metal fixing bracket in the shape of a ring that can be fitted from above on the outer periphery of the collecting pipe joint as the fixing portion, the metal fixing fitting can be easily attached to the outer periphery of the collecting pipe joint. Then, by screwing a plurality of protruding fixing members in the circumferential direction to the outer peripheral surface of the metal fixing bracket, the protruding fixing member is screwed so that the tip portion protrudes toward the inner peripheral surface side of the metal fixing bracket. The metal fixture can be easily fixed to the outer periphery of the collecting pipe joint by press-contacting the outer periphery of the collecting pipe joint. Furthermore, between the contact portion and the upper end surface of the metal fixing bracket is directly fastened and fixed from above by a fastening fixing member, so that troublesome mounting work is eliminated and the fixing operation between the contact portion and the metal fixing bracket is performed. Can be facilitated. In addition, since the seal member is an O-ring, the contact area with respect to the upper end portion of the collecting pipe joint is smaller than that of the flat packing, and accordingly, a small compressive force (or contact portion and metal fixing bracket). High sealing performance can be secured also by the fastening force acting between the two. As described above, it is possible to make the upper closing member 14 easier to handle and capable of performing a leakage inspection in a simple and short time.

It is sectional drawing which shows the drainage equipment of a building. It is an enlarged view of the collecting pipe joint part of FIG. It is the elements on larger scale of FIG. 2 which shows the leak test | inspection apparatus concerning Example 1 of this invention. It is a perspective view of the fixing | fixed part of FIG. It is the perspective view which looked at the fixing | fixed part of FIG. 3 from another angle. FIG. 5 is a side view of FIG. 4. It is a top view of the lid member of FIG. It is a bottom view of the lid member of FIG. It is a side view of the fixing | fixed part of FIG. It is a top view of a fixed part. It is a partial expanded side view of the upper obstruction | occlusion member concerning Example 2 of this invention. It is a top view of the metal fixing metal fitting of FIG.

  Hereinafter, examples embodying the present embodiment will be described in detail with reference to the drawings.

  FIGS. 1-12 shows each Example, among which FIGS. 1-10 is Example 1, FIG. 11, FIG. 12 is Example 2. FIG.

  <Configuration> The configuration of this embodiment will be described below with reference to FIGS.

  As shown in FIG. 1, a multi-storey building 1 such as an apartment house, an office building, or a hotel is provided with a drainage facility 2. The drainage facility 2 includes a drainage vertical pipe 4 that penetrates up and down each level 3 of the building 1, a drainage horizontal pipe 5 (or a side branch pipe) that extends in the horizontal direction for each level 3 of the building 1, It has a collecting pipe joint 6 (or a special drain pipe joint) that can connect the drainage vertical pipe 4 and the drainage horizontal pipe 5. The lower end portion of the drainage standpipe 4 described above is connected to a public fence or the like via an underground pipe (not shown). The drainage vertical pipe 4, the drainage horizontal pipe 5, and the collecting pipe joint 6 are made of resin.

  Such a drainage facility 2 has a single pipe type. The single-pipe drainage system 2 is provided with a swirl vane (not shown) inside the collecting pipe joint 6 described above, thereby reducing the amount of drainage flowing through the drainage standpipe 4 and the collecting pipe joint 6 and swirling the drainage. By providing a flow, an air core (air passage) is formed in the shaft center portion, so that it is not necessary to provide an independent air passage.

  As shown in FIG. 2, in the leak inspection apparatus for the drainage facility 2, the lower end opening 6 a of the collecting pipe joint 6 is connected to the upper end of the lower drainage pipe 4 during the construction of the drainage facility 2. In a fixed state, a section closing member 11 capable of closing the periphery of the collecting pipe joint 6 for a certain section is provided, and a pressurized fluid supply capable of supplying pressurized fluid into the section closed by the section closing member 11 A source 12 is provided.

  The section closing member 11 described above includes a lower closing member 13 that can close the inside of the lower drainage pipe 4, an upper closing member 14 that can close the upper end opening 6b of the collecting pipe joint 6, and a collecting pipe joint. 6 side opening 6c or a side closing member 15 capable of closing the end of the drainage horizontal pipe 5 connected to the side opening 6c.

(Supplementary explanation)
Here, the lower end opening 6 a of the collecting pipe joint 6 is a fixed receiving portion or the like that can insert and fix the upper end of the drainage pipe 4. Further, the upper end opening 6 b of the collecting pipe joint 6 is an expansion / contraction receiving portion that can absorb the influence of thermal expansion / contraction of the drainage standpipe 4. For this purpose, an annular packing 16 (see FIG. 3) is provided in the upper end opening 6b of the collecting pipe joint 6 (inner peripheral surface) so that the lower end of the drainage pipe 4 can be movably accommodated and sealed. It has been. The annular packing 16 includes, for example, a cylindrical portion 16a having a diameter larger than the outer periphery of the drainage standpipe 4, and an inclined ring-shaped lip portion 16b protruding obliquely downward from the inner peripheral surface of the cylindrical portion 16a. And so on. However, the configuration of the annular packing 16 is not limited to this.

  Similarly, the side opening 6 c is also an expansion / contraction receiving section that can absorb the influence of thermal expansion / contraction of the drainage horizontal pipe 5. The expansion / contraction receiving portion of the side opening 6c has substantially the same structure as the expansion / contraction receiving portion of the upper end opening 6b.

  The pressurized fluid supply source 12 described above is an electric pump, an electric compressor, or the like. The pressurized fluid supply source 12 is installed at the level 3 where the leakage inspection is performed. The pressure of the pressurized fluid by the pressurized fluid supply source 12 is set to 0.035 MPa, for example. In this case, pressurized air is used as the pressurized fluid. As the pressurized fluid, pressurized nitrogen or the like can be used in addition to the pressurized air. In this case, the pressurized fluid supply source 12 is a nitrogen gas cylinder or the like.

  The lower closing member 13 is a rubber balloon-like inflatable member 13a. A hose 13b that is inflated by a fluid such as air is attached to the inflatable member 13a, and a valve 13c that functions as a check valve is attached to the tip of the hose 13b. It should be noted that the above-described hose 13b is housed inside the collecting pipe joint 6 at the time of leakage inspection.

  For the side closing member 15 described above, a closing plug or a cap is used.

  In the leak inspection, a soap solution or the like is applied to connecting portions such as the drainage vertical pipe 4 and the drainage horizontal pipe 5. Alternatively, smoke or odor is mixed in the pressurized fluid.

  In addition to the basic configuration as described above, the present embodiment has the following configuration.

(Configuration 1)
As shown in FIGS. 3 to 10 (mainly see FIG. 3), the above-described upper closing member 14 is capable of contacting the upper end opening 6b of the collecting pipe joint 6 from above with the contact portion 21. The contact portion 21 includes a fixing portion 22 that can be fixed to the collecting pipe joint 6. A seal member 23 capable of sealing the upper end opening 6b is interposed between the contact portion 21 and the end surface of the upper end opening 6b of the collecting pipe joint 6.

(Supplementary explanation 1)
Here, the above-described contact portion 21 is a lid member having a diameter larger than that of the upper end opening 6 b of the collecting pipe joint 6. The contact portion 21 is, for example, a disc-shaped member having a uniform thickness. The contact portion 21 is formed with an opening portion 21a capable of communicating between the front and back surfaces. The opening portion 21a is connected to the pressurized fluid supply source 12 via a hose 12a (see FIG. 2). A pressurized fluid supply source connection unit 25 that can be connected is attached. The pressurized fluid supply source connecting portion 25 is constituted by a socket member 25a, a nipple member 25b, a cheese member 25c, a manual valve 25d, and a coupler 25e. The socket member 25a is a fixture for attaching to the opening 21a, the nipple member 25b is a connector for attaching the cheese member 25c to the socket member 25a, and the manual valve 25d is connected to the pressurized fluid supply source connecting portion 25. The coupler 25e is a connecting tool for connecting the hose 12a (pressurized fluid supply path) to the pressurized fluid supply source connecting portion 25. And the pressure gauge 26 is attached to the cheese member 25c via the bush member 25f.

  The above-described seal member 23 is a flat packing or the like disposed on the back side of the contact portion 21. The seal member 23 is at least larger than the inner diameter of the upper end opening 6b so as to be interposed between the back surface of the contact portion 21 and the upper end surface of the upper end opening 6b of the collecting pipe joint 6. It has an outer diameter and an inner diameter smaller than the outer diameter of the upper end opening 6b. In this case, the seal member 23 has an inner diameter that is substantially the same as or slightly smaller than the inner diameter of the upper end opening 6b of the collecting pipe joint 6, and an outer diameter that is substantially the same as or slightly smaller than the outer diameter of the upper end opening 6b. It has a ring shape with a large outer diameter. The seal member 23 may be integrated with the contact portion 21 or may be separate.

(Configuration 2)
As shown in FIGS. 9 and 10, the above-described fixing portion 22 has a winding fixing member 27 that can be wound around the outer periphery of the collecting pipe joint 6, and the contact portion 21 with respect to the winding fixing member 27. The connecting member 28 is connectable and fixable.

(Supplementary explanation 2)
Here, the winding fixing member 27 is a pair of fasteners 27c capable of fastening and fixing between a pair of band pieces 27a having a half ring shape and a flange portion 27b provided between both ends of the pair of band pieces 27a. It is supposed to be equipped with. In this case, the fasteners 27c are both bolts and nuts, but one of them may be a hinge part. Further, a one-touch fixing portion or the like may be used instead of the bolt and nut.

  Further, the connecting member 28 includes a long bolt 28a projecting upward from the winding fixing member 27 and a nut 28b. The lower end of the long bolt 28a is fixed to the winding fixing member 27 by welding or the like. Further, a bolt insertion hole 21b for passing the long bolt 28a is formed in the contact portion 21 (see FIG. 6).

  In addition to the above, for example, a cord-like member such as a wire can be used for the winding fixing member 27 and the connecting member 28 of the fixing portion 22.

  <Operation> The operation of this embodiment will be described below.

  A drainage facility 2 such as a single pipe type is composed of a drainage vertical pipe 4 penetrating up and down each level 3 of the building 1 and a horizontal drainage pipe 5 extending in the horizontal direction for each level 3 of the building 1. It is assumed that the joint 6 is connected.

  Such a leakage inspection of the drainage facility 2 is performed in the state where the lower end opening 6a of the collecting pipe joint 6 is connected and fixed to the upper end portion of the lower drainage pipe 4 during the construction of the drainage facility 2. , The periphery of the collecting pipe joint 6 is closed for a certain section, and the pressurized fluid is supplied into the section closed by the section closing member 11 using the pressurized fluid supply source 12.

  Blocking the section by the section closing member 11 closes the inside of the lower drainage pipe 4 using the lower closing member 13, and closes the upper end opening 6b of the collecting pipe joint 6 using the upper closing member 14. The side opening member 15 is used to close the side opening 6c of the collecting pipe joint 6 or the end of the drainage horizontal pipe 5 connected to the side opening 6c.

  In the case of leakage inspection, a soap solution or the like is applied to connecting portions such as the drainage vertical pipe 4 and the drainage horizontal pipe 5. Alternatively, smoke or odor is mixed in the pressurized fluid. Thereby, it becomes possible to perceive leakage easily by generation of bubbles by soap solution or leakage of smoke or odor.

  <Effect> According to this embodiment, the following effects can be obtained.

(Effect 1)
The above-described upper blocking member 14 has the contact portion 21 in contact with the upper end opening 6 b of the collecting pipe joint 6 from above, and the abutting portion 21 is fixed to the collecting pipe joint 6 by the fixing portion 22. It is attached by. At this time, the seal member 23 interposed between the contact portion 21 and the end face of the upper end opening 6 b of the collecting pipe joint 6 seals the upper end opening 6 b of the collecting pipe joint 6. Thus, the annular packing 16 provided inside the upper end opening 6b of the collecting pipe joint 6 is not closed, so that the annular packing 16 is not damaged by the upper closing member 14. Can do. Therefore, the drainage facility 2 can be operated without any trouble after the building 1 is completed.

(Effect 2)
The fixing portion 22 described above includes a winding fixing member 27 that can be wound and fixed around the outer periphery of the collecting pipe joint 6, and a connecting member 28 that can connect and fix the contact portion 21 to the winding fixing member 27. Thus, the winding fixing member 27 is wound and fixed on the outer periphery of the collecting pipe joint 6, and the contact portion 21 is connected and fixed to the winding fixing member 27 using the connecting member 28, so that the collecting pipe joint 6 can be easily attached. The contact portion 21 can be attached and fixed. And after completion | finish of a leak test | inspection, these can be easily removed and removed.

<Configuration> The configuration of this embodiment will be described below with reference to FIGS.
However, about the part which is common in FIGS. 1-10, description is abbreviate | omitted by attaching | subjecting the same code | symbol. However, the description of the present embodiment can be made as the description of the first embodiment with respect to the portion where the description is omitted.

(Configuration 3)
The fixing portion 22 described above has a metal fixing fitting 31 in the shape of a ring that can be fitted from above to the outer periphery of the collecting pipe joint 6. Further, the fixing portion 22 is screwed to the outer peripheral surface of the metal fixing bracket 31, and the tip end portion protrudes toward the inner periphery of the metal fixing bracket 31, so that it can be pressed and fixed to the outer periphery of the collecting pipe joint 6. A plurality of projecting and fixing members 32 in the circumferential direction and a fastening and fixing member 33 that can be fastened and fixed between the above-described contact portion 21 and the upper end surface of the metal fixing metal 31 from above.
Further, the sealing member 23 described above is an O-ring 23b.

(Supplementary explanation 3)
Here, the above-mentioned “metal fixing bracket 31” has an inner peripheral surface whose diameter is about two times larger than that of the flange-shaped outer projecting portion 6d formed on the outer peripheral surface of the upper end opening 6b of the collecting pipe joint 6. It is supposed to have. A lower flange portion 31a having an inner peripheral surface that is the same as or slightly larger in diameter than the outward projecting portion 6d is formed at the lower end portion of the metal fixture 31. The lower flange portion 31a can be partially locked upward at least partially in the circumferential direction with respect to the lower surface of the outward projecting portion 6d.
Further, an upper flange portion 31 b that can be locked downward with respect to the upper end surface of the collecting pipe joint 6 is formed at the upper end portion of the metal fixture 31. The upper flange portion 31 b has an inner peripheral surface having a size intermediate between the outer diameter and the inner diameter of the upper end surface of the collecting pipe joint 6.

  The above-described “projection fixing member 32” is a butterfly bolt or the like screwed in the lateral direction with respect to the metal fixing bracket 31. The projecting fixing member 32 is provided at approximately three to six positions with a substantially uniform spacing in the circumferential direction with respect to the metal fixing bracket 31. In this case, the number is set to three in consideration of workability. And in order to make the protrusion fixing member 32 screw to the protrusion fixing member 32 beforehand, the screw hole 31c is formed in the side surface of the protrusion fixing member 32 toward the radial direction.

The above-described “fastening fixing member 33” is a hexagon bolt that can be tightened with a hexagon wrench. The fastening and fixing member 33 is provided at approximately three to six locations with equal intervals in the circumferential direction with respect to the contact portion 21 and the metal fixing bracket 31. In this case, the number of locations is three in consideration of workability. In order to allow the fastening and fixing member 33 to be attached, a bolt hole 31 d is formed on the upper surface of the metal fixing metal 31. The bolt hole 31d has a minimum depth that can sufficiently ensure airtightness when the fastening and fixing member 33 is screwed to the maximum in order not to worry about torque management. Yes.
In addition, the protrusion fixing member 32 and the fastening fixing member 33 are provided so that the phases in the circumferential direction are shifted.

  The “O-ring 23b” described above may have, for example, a circular cross section or a semicircular cross section. In this case, it has a substantially semicircular cross section with the flat surface portion facing upward.

<Operation> The operation of this embodiment will be described below.
When closing the upper end portion of the collecting pipe joint 6, first, the ring-shaped metal fixture 31 is fitted to the outer periphery of the collecting pipe joint 6 from above.

  Next, a plurality of circumferentially extending protruding fixing members 32 screwed to the outer peripheral surface of the metal fixing bracket 31 are screwed inwardly so that the distal end portion of the protruding fixing member 32 faces the outer periphery of the collecting pipe joint 6. It is made to project and fixed to the outer periphery of the collecting pipe joint 6 by pressure contact. Thereby, the metal fixture 31 is fixed to the outer periphery of the collecting pipe joint 6.

  Thereafter, the contact portion 21 is disposed in contact with the upper end portion of the collective pipe joint 6 via the seal member 23 formed as an O-ring 23 b, and the space between the contact portion 21 and the upper end surface of the metal fixing bracket 31 is disposed. The fastening and fixing member 33 is directly fastened and fixed from above. At this time, by completely screwing the fastening and fixing member 33 into the bolt hole 31d, the airtight performance is sufficiently ensured without worrying about torque management. As a result, the upper end portion of the collecting pipe joint 6 is reliably closed, so that the leakage inspection can be performed as it is.

  <Effect> According to this embodiment, the following effects can be obtained.

(Effect 3)
As the fixing portion 22, a metal fixing bracket 31 having a ring shape that can be fitted from above is provided on the outer periphery of the collecting pipe joint 6, so that the metal fixing bracket 31 can be easily attached to the outer periphery of the collecting pipe joint 6. Can do.

  A plurality of projecting and fixing members 32 in the circumferential direction are screwed onto the outer peripheral surface of the metal fixing bracket 31 so that the projecting fixing member 32 is screwed, and the tip portion thereof is the inner peripheral surface of the metal fixing bracket 31. The metal fixture 31 can be easily fixed to the outer periphery of the collecting pipe joint 6 by projecting to the side and press-contacting to the outer periphery of the collecting pipe joint 6.

  Further, a long bolt 28a projecting upward from the winding fixing member 27 by directly fastening and fixing between the contact portion 21 and the upper end surface of the metal fixing bracket 31 from above by the fastening fixing member 33. It is possible to eliminate the troublesome mounting work of passing the screw through the bolt insertion hole 21b of the contact portion 21 and facilitate the fixing operation of the contact portion 21 and the metal fixing bracket 31.

  In addition, since the seal member 23 is an O-ring 23b, the contact area with respect to the upper end portion of the collecting pipe joint 6 is smaller than when a flat packing is used for the seal member 23, and accordingly, a smaller compressive force. (Alternatively, higher sealing performance can be secured even with the fastening force between the contact portion 21 and the metal fixture 31).

  As described above, it is possible to make the upper closing member 14 easier to handle and capable of performing a leakage inspection in a simple and short time.

  In addition to the above, it is a matter of course that the same effects as those of the first embodiment can be obtained for the parts having the same configuration as that of the first embodiment.

  Although the embodiments of the present invention have been described in detail with reference to the drawings, the embodiments are only examples of the present invention, and the present invention is not limited to the configurations of the embodiments. Needless to say, design changes and the like within a range not departing from the gist of the invention are included in the present invention. Further, for example, when each embodiment includes a plurality of configurations, it is a matter of course that possible combinations of these configurations are included even if not specifically described. Further, when a plurality of embodiments and modifications are shown, it is needless to say that possible combinations of configurations extending over these are included even if not specifically described. Further, the configuration depicted in the drawings is of course included even if not particularly described. Further, when there is a term of “etc.”, it is used in the sense that the equivalent is included. In addition, when there are terms such as “almost”, “about”, “degree”, etc., they are used in the sense that they include those in the range and accuracy recognized by common sense.

DESCRIPTION OF SYMBOLS 1 Building 2 Drainage equipment 3 Levels 4 Drainage stand 5 Drainage horizontal pipe 6 Collecting pipe joint 6a Lower end opening 6b Upper end opening 6c Side opening 11 Section block member 12 Pressurized fluid supply source 13 Lower block member 14 Upper block member DESCRIPTION OF SYMBOLS 15 Side part obstruction | occlusion member 21 Contact part 22 Fixing part 23 Seal member 23b O-ring 27 Winding fixing member 28 Connecting member 31 Metal fixing bracket 32 Projection fixing member 33 Fastening fixing member

Claims (3)

A drainage vertical pipe penetrating up and down each level of the building, a horizontal drainage pipe extending laterally for each level of the building, and a collecting pipe joint capable of connecting the drainage vertical pipe and the horizontal drainage pipe For the drainage equipment
In the middle of construction of the drainage facility, a section closing member capable of closing the periphery of the collecting pipe joint for a certain section is provided in a state where the lower end opening of the collecting pipe joint is connected and fixed to the upper end of the lower drainage pipe. A pressurized fluid supply source capable of supplying pressurized fluid inside the section closed by the section closing member;
The section closing member includes a lower closing member capable of closing an inside of a lower drainage pipe, an upper closing member capable of closing an upper end opening of the collecting pipe joint, and a side opening of the collecting pipe joint or the In the leakage inspection apparatus for drainage equipment, comprising a side closing member capable of closing the end of the drainage horizontal pipe connected to the side opening,
The upper closing member is
A contact portion that can be placed in contact with the upper end opening of the collecting pipe joint from above;
The contact portion includes a fixing portion that can be fixed to the collecting pipe joint,
A drainage inspection apparatus for a drainage facility, wherein a seal member capable of sealing the upper end opening is interposed between the contact portion and the end face of the upper end opening of the collecting pipe joint.   The fixing portion includes a winding fixing member that can be wound and fixed on an outer periphery of a collecting pipe joint, and a connecting member that can connect and fix the contact portion to the winding fixing member. Item 1. A leakage inspection apparatus for a drainage facility according to Item 1. The fixed portion is a ring-shaped metal fixing fitting that can be fitted to the outer periphery of the collecting pipe joint from above, and is screwed to the outer peripheral surface of the metal fixing fitting, and the tip protrudes toward the outer periphery of the collecting pipe joint. A plurality of projecting fixing members in the circumferential direction that can be press-fixed to the outer periphery of the collecting pipe joint, and a fastening member that can be fastened and fixed from above between the contact portion and the upper end surface of the metal fixture. Have
The leak inspection apparatus for a drainage facility according to claim 1, wherein the seal member is an O-ring.