JP4091290B2 - Radiation tube installation jig and installation method - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
TECHNICAL FIELD The present invention relates to a diffusion tube installation jig and a diffusion tube installation method, which are set up vertically on a perforation formed in a pipeline at the time of pipeline blocking work or the like.
[0002]
[Prior art]
In partial replacement work to be performed on buried live pipes and original rearrangement work that separates and closes unused parts, the insertion hole of the pipe blocking bag is drilled outside the work section in the pipe, In general, a method of inserting a pipe blocking bag from the perforation to block the flow into the work section and then cutting the work section is performed.
[0003]
FIG. 6 is an explanatory view for explaining such a conventional construction method. In the figure, a shaft A is excavated outside the construction section, and the work of blocking the pipe line 1 is performed in the shaft A. In this operation, as described above, a perforation 1a is formed in the conduit 1, and a conduit blocking bag (gas bag) is inserted into the conduit 1 from the perforation 1a. The pipe blocking bag is composed of a main ball B1 inserted on the upstream side of the perforation 1a and a reverse ball B2 inserted on the downstream side, thereby blocking the inflow of the fluid in the pipe into the construction section.
[0004]
However, since impurities are attached to the inner surface of the pipe, or some old pipes have an inner diameter that is not a perfect circle, it is difficult to completely shut off the flow even with such a pipe-blocking bag. In addition, since it is conceivable that the conduit blocking bag may be damaged for some reason, the diffusion tube C is set up on the perforation 1a formed in the conduit 1, and the conduit blocking bag is passed over. Disaster prevention measures are taken so that the in-pipe fluid thus discharged is not discharged into the shaft A which becomes the work area by being discharged from the perforations 1a.
[0005]
[Problems to be solved by the invention]
As a means for installing the diffusion pipe C important for disaster prevention measures with respect to the pipe 1, conventionally, a seal D made of clay or water-impregnated waste or the like is used to connect the pipe 1 with the lower end of the diffusion pipe C. An extremely simple means was adopted in which the upper part of the diffusion tube C was supported from the ground by the support member E. According to such means, since the pipe 1 and the lower end of the diffusion pipe C are not securely fixed, there is a possibility that the diffusion pipe C may come off from the perforation 1a of the pipe 1 when some external force is applied. When such a situation occurs, there is a problem that the in-pipe fluid that has passed through the conduit blocking bag is discharged into the shaft A from the perforations 1a.
[0006]
Moreover, the clay generally used as the seal D is not only difficult to collect at the site, but also dries over time and the sealing action deteriorates. There is also a problem in that the fluid in the pipe is discharged into the inside, leading to a decrease in security. Furthermore, it is known that when clay or the like is adhered to the surface of the pipeline, the adhesion location of the PE pipeline is adversely affected at the time of fusion bonding, and it is likely to cause poor bonding. There is a need for a means of installing no diffuser.
[0007]
The present invention has been proposed in order to cope with such a situation, and the installation of the radiation pipe standing on the perforations formed in the pipe line is made strong and airtight without using a seal such as clay. It is an object of the present invention to provide a diffusion pipe installation jig and installation method that make it highly reliable and further enhances the safety so that the fluid in the pipe discharged from the drilling does not flow out into the shaft. .
[0008]
[Means for Solving the Problems]
To achieve the above object, dissipating pipe installation jig according to the present invention are those comprising the following configuration.
[0009]
Claim 1 is a radiation pipe installation jig for installing a radiation pipe standing on a perforation formed in a pipe line with respect to the pipe line, and is attached to the pipe line so as to airtightly surround the perforation. A cylindrical tool that uses a pedestal having a mounting opening on the perforation, is hermetically attached to the mounting opening of the pedestal, and is inserted into the lower end of the diffusion pipe or the lower end of the adapter pipe to which the diffusion pipe is connected. Bei example, the said tubular member, said lower end of the dissipating tubes or adapter tubes with abutting step portion abuts is formed on the inner surface, slits extending below the relevant Seddan portion is formed from the upper end, the slit Thus, a gap through which the air injection hose of the conduit blocking bag can be inserted is formed below the contact step portion.
[0011]
According to a second aspect of the present invention, on the premise of the diffusion pipe installation jig of the first aspect , a mounting portion of a no-blow work bag is formed around the mounting opening in the pedestal, and the adapter pipe has an upper portion of the no-blow work bag. An enlarged-diameter portion that closes the opening is formed.
[0012]
According to a third aspect of the present invention, on the premise of the diffusion tube installation jig of the first or second aspect, a base for a drilling machine is used as the base. Moreover, the installation method of the diffusion tube which concerns on Claims 4-6 of this invention comprises the following structures.
[0013]
A fourth aspect of the present invention is a method of installing a diffusion pipe in which a diffusion pipe standing on a perforation formed in a pipe is installed with respect to the pipe, and is attached to the pipe so as to surround the perforation in an airtight manner. Using a pedestal having a mounting opening on the perforation, a no-blow working bag is mounted around the mounting opening, and a cylindrical tool is attached to the mounting opening in the no-blow working bag, from an upper opening of the no-blow working bag The diffusion tube is inserted, the lower end of the diffusion tube is inserted into the cylindrical tool, and the cylindrical tool is formed on the inner surface with a contact step portion with which the lower end of the diffusion tube is contacted, A slit is formed from the upper end to the lower side of the corresponding stepped portion, and the cylindrical shape is inserted into the gap formed by the slit below the contacted stepped portion. The lower end of the diffuser tube Characterized in that it is inserted.
[0014]
A fifth aspect of the present invention is a method of installing a diffusion pipe in which a diffusion pipe standing on a perforation formed in a pipe is installed with respect to the pipe, and is attached to the pipe while airtightly surrounding the perforation. Using a pedestal having a mounting opening on the perforation, a no-blow working bag is mounted around the mounting opening, and a cylindrical tool is attached to the mounting opening in the no-blow working bag, from an upper opening of the no-blow working bag A diffusion tube connected to an adapter tube having an enlarged diameter portion that closes the upper opening is inserted, and a lower end of the adapter tube is inserted into the cylindrical tool.
[0015]
According to a sixth aspect of the present invention, on the premise of the installation method of the diffusion pipe according to the fifth aspect , the cylindrical tool has an abutting step portion with which the lower end of the adapter pipe abuts is formed on the inner surface, and the corresponding contact from the upper end. stepped portions are slits extending below the formation, the adapter the state where those Seddan portion of the air injection hose conduit blocking bag formed gap downwards is inserted in the tubular member by the slit The lower end of the tube is inserted.
[0016]
The invention according to each claim having such a configuration has the following effects.
[0017]
According to the diffusion tube installation jig according to claims 1 to 3 , using the pedestal mounted on the perforated part of the pipeline, the cylindrical tool is attached to the mounting opening of the pedestal, and the lower end of the diffusion tube is directly attached to the cylindrical tool. By connecting the diffusion tube to the adapter tube inserted or inserted into the cylindrical tool, the diffusion tube is installed perpendicular to the pipeline. According to this, the diffusion pipe is installed on the pedestal that hermetically surrounds the perforation of the pipe line via the cylindrical tool, and the airtightness of the installation position of the diffusion pipe is improved and the installation can be performed firmly.
[0018]
And as a structure of the cylindrical tool, because the contact step portion is formed on the cylindrical inner surface, the lower end of the diffusion tube or adapter tube to be inserted is brought into contact with this contact step portion. The airtightness between the tubular tool and the diffusion tube or adapter tube can be ensured. This airtightness can be further improved by interposing a seal member such as a rubber material on the contact surface of the contact step portion.
[0019]
In addition, the cylindrical tool is formed with a slit extending from the upper end to the lower side of the contact step portion. With the diffusion tube or adapter tube inserted into the cylindrical tool, the slit is formed below the contact step portion of the slit. It has a structure in which a gap is formed in the portion. By adopting such a structure, the air injection hose of the pipe blocking bag inserted into the pipe can be inserted into the gap and pulled out of the diffusion pipe. By attaching a valve or a pressure gauge to the end, it is possible to reliably maintain and manage the pressurized state of the conduit blocking bag.
[0020]
Furthermore, a mounting part for mounting the no-blow work bag is formed around the mounting opening in the pedestal, and an enlarged diameter part for closing the upper opening of the no-blow work bag is formed in the adapter pipe, so that the periphery of the installation position of the diffusion pipe is formed. It becomes possible to cover it airtight with a no blow work bag. According to this, even if the fluid in the pipe is discharged from the location where the radiation pipe is installed, the surroundings (inside the shaft) are not filled, and further safety can be ensured.
[0021]
By using a drilling machine pedestal as the above-mentioned pedestal, it is possible to perform economical work using existing equipment, and in combination with a no-blow work bag, a series of no-blow operations can be performed from drilling to installation of a diffusion tube. It can be done by work.
[0022]
According to the installation method of the diffusion pipe in the fourth to sixth aspects, the work after the pedestal is mounted on the pipe line can be performed in a no-blow work bag mounted around the mounting opening of the pedestal. Accordingly, it is possible to perform the operation of attaching the cylindrical tool to the mounting opening of the pedestal and the operation of inserting the lower end of the diffusion pipe or the lower end of the adapter pipe to which the diffusion pipe is connected to the cylindrical tool in a no-blow operation. And the safety | security after installation of a diffusion pipe is securable by using the adapter pipe | tube provided with the enlarged diameter part which plugs up the upper opening of a no blow work bag.
[0023]
Furthermore, by using the above-mentioned cylindrical tool having the contact step portion and the slit, after the cylindrical tool is attached to the pedestal in the no-blow work bag, the pipe is blocked in the pipe line through the cylindrical tool. Insert the bag, insert the air injection hose of the conduit blocking bag through the slit, and in this state, insert the lower end of the diffusion tube or adapter tube into the cylindrical tool and bring the lower end into contact with the contact step Thus, the air injection hose of the conduit blocking bag can be drawn out of the diffusion pipe from the gap below the slit.
[0024]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is an explanatory view (partial sectional view) for explaining a diffusion tube installation jig according to an embodiment of the present invention. The diffusion tube installation jig is a jig for installing the diffusion tube C with respect to the pipeline 1 in which the perforations 1a are formed, and the cylindrical tool 3 attached to the base 2 attached to the pipeline 1 is provided. It is provided with at least an adapter pipe 4 for connecting the cylindrical body 3 and the diffusion pipe C, and is used in combination with a no-blow work bag (not shown) as necessary.
[0025]
The pedestal 2 attached to the pipe line 1 is a substitute for the drilling machine pedestal, and is attached by winding the chain 2A around the pipe line 1. The pedestal 2 includes a seal portion 2B that hermetically surrounds the perforation 1a formed in the pipe 1 and has a mounting opening 2a that opens on the perforation 1a. A mounting portion 2b (groove portion) for mounting a no-blow work bag (not shown) is provided around the outside of the mounting opening 2a.
[0026]
The cylindrical tool 3 is attached to the mounting opening 2a of the pedestal 2 via a coupling adapter 3A that is coupled to the screw portion. The cylindrical tool 3 is a cylindrical jig and has an opening that faces the perforation 1a when attached, and an abutting step 3a is formed on the inner surface thereof. A sealing material 3b such as a rubber material is provided on the contact step portion 3a as necessary. Further, the cylindrical tool 3 is formed with two slits 3c at left and right symmetrical positions extending from the upper end thereof to below the contact step portion 3a.
[0027]
The lower end of the adapter tube 4 is inserted into the tubular member 3, and the lower end is brought into contact with the contact step portion 3a through the sealing material 3b. The adapter pipe 4 is configured such that the enlarged diameter portion 4B is connected by a different diameter pipe joint 4A, and the diffusion pipe C is connected to the upper end by a different diameter pipe joint 4C. The outer diameter of the enlarged diameter portion 4B is set to a diameter (75φ) slightly larger than the upper opening (70φ) so as to close the upper opening of a no-blow work bag (not shown).
[0028]
Here, the cylindrical tool 3 is described as an example in which the lower end of the adapter pipe is inserted. However, the lower end of the diffusion pipe C is directly inserted, and the abutting step portion 3a described above is used. And it is good also as a structure which has the slit 3c, and it is good also as a structure attached directly to the base 2 without passing through the coupling adapter 3A.
[0029]
When the diffusion tube C or the adapter tube 4 is inserted into the tubular tool 3 and its lower end is brought into contact with the contact step 3a, the lower part is below the contact step 3a of the slit 3c formed in the tubular tool 3. Is formed with a gap F. This gap F is provided for pulling out the air injection hose of a pipe blocking bag (not shown) inserted into the pipe 1 from the perforation 1a out of the diffusion pipe C. From the outer diameter of the hose As a gap having a slightly smaller diameter, airtightness can be secured even when the hose is inserted through the gap F.
[0030]
According to the diffusion tube installation jig having such a structure, the cylindrical tool 3 is airtightly attached to the pedestal 2 using the pedestal 2 that is airtightly and firmly attached to the pipe line 1 for the drilling machine. 3 is a structure in which the diffusion tube C or the adapter tube 4 to which the diffusion tube C is connected is inserted and fixed, and is highly airtight with respect to the coupling between the tubular tool 3 and the diffusion tube C or the adapter tube 4. Therefore, the diffusion tube C can be installed in a state in which the tube 1 is kept strong and airtight.
[0031]
In addition, since the diffusion tube C is installed with respect to the pipeline 1, the air injection hose of the pipeline blocking bag can be pulled out from the gap F formed below the slit 3 c while maintaining airtightness. By attaching a valve and a pressure gauge to the end of the hose, it is possible to check the pressurized state of the conduit blocking bag from the outside.
[0032]
Furthermore, a no-blow work bag is attached to the mounting part 2b of the base 2, and the noblow work is performed around the area where the diffuser pipe C is installed so that the upper opening of the no-blow work bag is closed by the enlarged diameter part 4B of the adapter pipe 4. By covering with the bag, even if the pipe fluid is released from the location where the diffusion pipe is installed, the released pipe fluid is contained in the no-blow work bag and is not released to the surrounding work area.
[0033]
Below, the method to install a diffusion pipe in a pipe line using the above-mentioned diffusion pipe installation jig is demonstrated. 2-5 is explanatory drawing which shows the procedure of this diffusion tube installation method.
[0034]
In FIG. 2, the base 2 for the punching machine is attached to the pipe line 1, and when the punching work by the punching machine H is completed, the no-blow work bag G is attached to the mounting part 2 b of the base 2. Then, the punching machine H is removed from the base 2 by a manual operation inserted from the upper opening G1 of the no-blow work bag G, and the coupling adapter 3A in the tubular member 3 is screwed and attached to the mounting opening of the base 2.
[0035]
Next, in FIG. 3, by the work in the no-blowing work bag G, the pipe blocking bags B <b> 1 and B <b> 2 are inserted into the pipe 1 from above the tubular tool 3 attached to the base 2. At this time, the air injection hoses b1 and b2 of the conduit blocking bags B1 and B2 are drawn out of the no-blow work bag G from the dedicated holes.
[0036]
Then, as shown in FIG. 4, a valve I with a pressure gauge is attached to the ends of the air injection hoses b1 and b2 to inflate the line blocking bags B1 and B2 in the line 1 and block the line 1 To do. Thereafter, the air injection hoses b1 and b2 are inserted into the slit 3c of the tubular tool 3.
[0037]
In FIG. 5, the adapter pipe 4 to which the diffusion pipe C is connected is inserted from the upper opening G <b> 1 of the no-blow work bag G, and the lower end of the adapter pipe 4 is inserted into the cylindrical tool 3 in the no-blow work bag G. As a result, the air injection hoses b 1 and b 2 are inserted into the gap formed below the tubular tool 3, and the adapter pipe 4 and the diffusion pipe C are fixed vertically by the tubular tool 3. At this time, the upper opening G1 of the no-blow work bag G is closed by the enlarged diameter portion 4B provided in the adapter pipe 4, and the air-tightness of the no-blow work bag G is ensured. Finally, the ends of the air injection hoses b1 and b2 are fixed to the periphery of the diffusion tube C by the fixing means J, and the operation is completed.
[0038]
According to such an installation method of the diffusion pipe, after the drilling operation is performed on the pipe line 1, the base 2 for the drilling machine is used as a substitute, and the subsequent work is completed by the no-blow operation using the no-blow work bag G. Can be made. Moreover, the safety | security of an installation location can also be improved by mounting | wearing the no blow work bag used at this time as it is at the diffusion tube installation location. Moreover, by replacing the base for the drilling machine, it is economical because it is not necessary to prepare a new facility only by attaching a jig. Furthermore, since the air injection hoses b1 and b2 can be pulled out, it is possible to check the state of the conduit blocking bags B1 and B2.
[0039]
In the above description, the pedestal 2 is described as an example of a saddle type that is attached to the pipe line by the chain 2A. However, the form of the pedestal is not particularly limited to this, and the pipe line What is necessary is just to air-tightly surround the perforations formed in and to have mounting openings on the perforations. In particular, when a PE pipe is used as a pipe line, a clamp-type pedestal is used.
[0040]
【The invention's effect】
Since the present invention is configured as described above, the installation of the radiation pipe standing on the perforations formed in the pipeline is made strong and airtight without using a seal such as clay, and further security is achieved. Therefore, it is possible to prevent the pipe fluid discharged from the perforation from flowing out into the shaft.
[Brief description of the drawings]
FIG. 1 is an explanatory view (partial cross-sectional view) illustrating a diffusion tube installation jig according to an embodiment of the present invention.
FIG. 2 is an explanatory diagram showing a procedure of a diffusion tube installation method of the present invention.
FIG. 3 is an explanatory view showing the procedure of the diffusion tube installation method of the present invention.
FIG. 4 is an explanatory view showing the procedure of the diffusion tube installation method of the present invention.
FIG. 5 is an explanatory diagram showing the procedure of the diffusion tube installation method of the present invention.
FIG. 6 is an explanatory diagram for explaining a conventional technique.
[Explanation of symbols]
1 Pipeline 2 Base 2A Chain 3 Tubular tool 3A Coupling adapter 4 Adapter pipes 4A, 4C Different diameter pipe joint 4B Expanded part

Claims (6)

A diffusion tube installation jig for installing a diffusion tube standing on a perforation formed in a pipeline with respect to the pipeline,
Using a pedestal that is airtightly enclosed by the perforation and has a mounting opening on the perforation, the bottom end of the radiation pipe or the radiation pipe is attached to the mounting opening of the base. e Bei tubular member the lower end of the adapter tube to be connected is inserted,
In the tubular tool, a contact step portion with which the lower end of the diffusion tube or the adapter tube comes into contact is formed on the inner surface, and a slit is formed from the upper end to the lower side of the corresponding contact step portion. A diffusion pipe installation jig characterized in that a gap through which an air injection hose of a line blocking bag is inserted is formed below the contact step . Around the mounting aperture in the pedestal is formed with a mounting portion of Noburo work bag, according to claim 1, wherein the adapter tube, characterized in that the enlarged diameter portion for closing the upper opening of the Noburo working bag is formed The diffusion tube installation jig described in 1. Dissipating tube installation jig according to claim 1 or 2, characterized in that a pedestal for the drilling machine as the base. A radiation pipe installation method for installing a radiation pipe standing on a perforation formed in a pipe line with respect to the pipe line,
A no-blow working bag is mounted around the mounting opening using a pedestal that is airtightly enclosed in the conduit and has a mounting opening on the perforation, and the mounting opening in the no-blow working bag. Attach the tubular tool to, insert the diffusion tube from the upper opening of the no blow work bag, insert the lower end of the diffusion tube into the cylindrical tool ,
In the tubular tool, a contact step portion with which the lower end of the diffusion tube is in contact is formed on the inner surface, and a slit is formed from the upper end to below the contact step portion, and the contact step is formed by the slit. A diffusion tube installation method , wherein a lower end of the diffusion tube is inserted into the tubular member in a state where an air injection hose of a conduit blocking bag is inserted through a gap formed below the portion . A radiation pipe installation method for installing a radiation pipe standing on a perforation formed in a pipe line with respect to the pipe line,
A no-blow working bag is mounted around the mounting opening using a pedestal that is airtightly enclosed in the conduit and has a mounting opening on the perforation, and the mounting opening in the no-blow working bag. A cylindrical tool is attached to the tube, and a diffusion pipe connected to an adapter pipe having an enlarged diameter portion that closes the upper opening from the upper opening of the no-blow work bag is inserted, and the lower end of the adapter pipe is inserted into the cylindrical tool. A radiation tube installation method characterized by: In the cylindrical tool , a contact step portion with which the lower end of the adapter tube is contacted is formed on the inner surface, and a slit is formed from the upper end to below the corresponding contact step portion, and the contact step is formed by the slit. in a state where an air injection hose conduit blocking bag in the gap formed downward is inserted parts, according to claim 5, wherein the lower end of the adapter tube to be inserted into the tubular member How to install a radiation tube.

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