JP2014034860A - Repair structure of conduit line, and repair method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a repair structure of a conduit line, capable of utilizing heat possessed by water flowing in the repaired conduit line, and a repair method for realizing the repair structure.SOLUTION: A conduit line is repaired by connecting and arranging assemblies A, B in which a plurality of segments 2 to 4 each provided with ribs 5b, 5c on the outer periphery are assembled in the circumferential direction in the axial direction inside the conduit line to be repaired. A storage recess C for storing heat-exchange members D is formed in inner peripheral surfaces of the segments 3, 4 arranged on a bottom part 1a of the conduit line to be repaired. When the conduit line to be repaired is repaired, the storage recesses are continuously configured in the bottom part in the axial direction, the heat-exchange members are stored in the storage recesses while an opening 9 is shielded by a cover member E. Holes 6 through which optical fibers pass are formed in the rib 5c of the segment 2 arranged in an upper part of the conduit line, and holes 6 are penetratingly formed in an upper part of a repaired conduit line F in the lengthwise direction.

Description

  The present invention relates to a repair structure for a pipe that can repair the target pipe and can use the heat of water flowing through the repaired pipe, and a repair method for realizing the repair structure. .

  At present, there are many pipes in the ground that allow water to flow inside, such as pipes for sewers, pipes for industrial water, and pipes for agricultural water. All of the water flowing through such pipes retains heat, but the fact is that it is not effectively utilized. For this reason, recently, attempts have been made to effectively use such heat.

  For example, the invention described in Patent Document 1 relates to a sewage heat utilization system, in which at least the upper part of the outer periphery of a sewer pipe is covered with a jacket, and heat source water such as antifreeze is circulated through the jacket to flow through the sewer pipe. Heat exchange with sewage is performed. In the invention described in Patent Document 1, even a sewer pipe laid in the ground can be constructed by excavating from the ground side, and the heat of sewage can be used. It becomes.

  On the other hand, since the pipeline through which water flows deteriorates with time, the degraded pipeline is repaired. Various repair structures for repairing a deteriorated pipe line have been proposed. One of them is a repair structure for an existing pipe line described in Patent Document 2. The repair structure of this existing pipeline is repaired by attaching the inner surface of the existing pipeline internally by a cylindrical assembly made up of strip-shaped inner surfaces (segments) obtained by dividing the existing pipeline in the axial and circumferential directions. To do. In particular, after arranging a plurality of assemblies in a section to be repaired in an existing pipeline, a curable filler is filled between the inner surface of the existing pipeline and the outer surface of the segment to integrate the existing pipeline and the segment. This makes it possible to repair a deteriorated existing pipeline.

JP 2008-241226 A JP 2006-207754 A

  In the invention described in Patent Document 1, since the jacket through which the heat source water flows is arranged on the outer peripheral surface of the sewer pipe, heat exchange between the sewage and the heat source water is performed through the sewer pipe and the jacket. The sewer pipe is generally a concrete pipe, and there is a possibility that efficient heat exchange cannot be realized.

  In the invention described in Patent Document 2, although the existing pipeline can be reasonably repaired, there is no idea to use the heat of the water flowing through the repaired pipeline.

  In addition, after placing the assembly in which the segment is assembled in the section to be repaired in the existing pipeline, when filling the curable filler between the inner surface of the existing pipeline and the outer surface of the segment, it is evenly distributed. It is difficult to fill in the same manner, and there is a possibility that voids are formed. Furthermore, from the viewpoint of workability, the outer diameter of the segment is formed smaller than the inner diameter of the existing pipe line. For this reason, buoyancy acts on the assembly of the segment by the curable filler filled between the inner surface of the existing pipe line and the outer surface of the segment, and as a result, the assembly may be lifted.

  SUMMARY OF THE INVENTION An object of the present invention is to provide a pipe repair structure capable of repairing a deteriorated pipe and using the heat of water flowing through the repaired pipe, and a repair method for realizing the repair structure. There is.

  In order to solve the above-described problems, the pipe repair structure according to the present invention is an axial connection of an assembly in which a plurality of segments each provided with a rib on the outer periphery are combined in the circumferential direction inside the pipe to be repaired. The pipe has a structure for repairing the pipe by repairing, and the inner circumferential surface of the segment arranged at the bottom of the pipe to be repaired is formed with a housing recess for housing the heat exchange member. When the segment to be repaired is connected in the axial direction of the pipeline to be repaired and the pipeline to be repaired is repaired, the receiving recess is continuously formed in the axial direction at the bottom of the repaired pipeline, The heat exchange member is accommodated in the continuous accommodation recess, and the open portion of the accommodation recess is shielded by the lid member.

  In the above-mentioned pipe repair structure, when connecting an assembly in which a plurality of segments are combined in the circumferential direction in the axial direction, the connection portions of the adjacent assembly segments are connected to each other without matching each other. Preferably, when the assembly combining a plurality of segments is connected in the axial direction while shifting the connection portions of the segments, when the connection portions of the segments correspond to the bottom of the pipeline to be repaired, It is more preferable that a part of the housing recess for housing the heat exchange member is formed on the inner peripheral surface corresponding to the bottom of the pipe line to be repaired in the segments arranged on both sides of the connection site.

  In any one of the repair structures described above, when connecting an assembly in which a plurality of segments are combined in the circumferential direction in the axial direction, it is preferable to connect the segments of adjacent assemblies through a reinforcing plate. .

  In any of the above-described pipe repair structures, holes for inserting optical fibers are formed in the ribs of the segments arranged above the pipes to be repaired. When the power line is repaired, it is preferable that the hole is formed so as to penetrate the upper part of the repaired pipe line in the longitudinal direction.

  Further, the pipe line repair method according to the present invention uses a plurality of segments including a segment in which a housing recess for accommodating a heat exchange member is formed on the inner peripheral surface, and the inside of the pipe line to be repaired. An inner peripheral surface of the pipe line to be repaired by arranging the segment formed with the receiving recess in the portion corresponding to the bottom part of the pipe line to be repaired and combining other segments in the circumferential direction of the segment A filling port is provided between the inner peripheral surface of the pipe to be repaired and the outer periphery of the segment while containing the impregnated base material and filling the grout material at a predetermined position. The inner peripheral surface of the pipe line to be repaired and the segment are repaired by filling the bag body with grout material from the filling port provided in the bag body. The pipeline to be repaired and the pipeline to be repaired When repaired by a plurality of segments connected in the axial direction, the heat exchange member is accommodated in the accommodating recess formed in the axial direction at the bottom of the repaired pipeline, and the open portion of the accommodating recess is shielded by the lid member It is characterized by doing.

  In the pipe repair structure according to the present invention, since the segment formed with the receiving recess on the inner peripheral surface is arranged at the bottom of the pipe to be repaired, an assembly in which a plurality of segments are combined in the circumferential direction is connected in the axial direction. When arranged in the pipeline to be repaired, a continuous recess can be formed at the bottom of the pipeline. And a heat exchange member can be installed in the bottom part of a pipe line by accommodating a heat exchange member in this accommodation recessed part, and shielding the open part of this accommodation recessed part with a cover member. For this reason, the heat which the water which flows through the inside of a pipe line through the installed heat exchange member can be utilized.

  Further, by constructing an assembly by combining a plurality of segments in the circumferential direction, even when the diameter of a manhole installed in a pipeline to be repaired is small, it is easy to carry in through the manhole. Yes, it is easy to transport in the pipeline. For this reason, the workability at the time of repairing a pipe line can be improved.

  Further, by accommodating the heat exchange member in the accommodating recess formed in the segment, the cross-sectional area of the repaired pipe line is not reduced, and the flow of water is not hindered. Further, since the heat exchange member is housed in the housing recess, maintenance and inspection work and repair work on the heat exchange member can be easily performed. That is, when an attempt is made to place a heat exchange member on a pipe line that has been repaired using a segment in which no housing recess is formed, the inner peripheral surface of the segment with the heat exchange member placed on the bottom surface of the pipe line and exposed. It must be fixed to. For this reason, a heat exchange member becomes an obstruction and obstructs the flow of water, and will reduce the cross-sectional area of a pipe line. Moreover, when repairing a heat exchange member, it is necessary to cancel | release fixation with respect to the internal peripheral surface of a segment, and an operation | work is not easy.

  When connecting an assembly in which a plurality of segments are combined in the circumferential direction in the axial direction, the connecting portions of the adjacent assembly segments are connected to each other so that the assembly is continuous. Strength does not decrease.

  In addition, when connecting a plurality of assemblies in the axial direction while shifting the connection parts of the segments, if the connection part corresponds to the bottom of the pipeline to be repaired, the segments arranged on both sides of the connection part By forming a part of the housing recesses on the inner peripheral surface, the housing recesses can be formed continuously at the bottom of the pipeline to be repaired even if the assembly is continued while shifting the connecting portions of the segments. Therefore, the heat exchanging member is accommodated in the accommodating recess and the open portion is shielded by the lid member, so that the heat exchanging member can be installed at the bottom of the pipe line.

  Moreover, when connecting an assembly to an axial direction, a segment can be reinforced by connecting the segments of an adjacent assembly through a reinforcement board. For this reason, the strength of the repaired pipeline can be improved.

  In addition, by forming a hole for inserting an optical fiber in the rib of the segment arranged at the upper part of the pipe line to be repaired, the pipe line to be repaired is repaired by an assembly in which a plurality of assemblies are continuous. In this case, a hole is formed through the upper portion of the pipe. For this reason, the optical fiber network which passed along the pipe line can be comprised by inserting and installing an optical fiber in the hole comprised in the upper part of the repaired pipe line.

  In particular, since a hole through which the optical fiber is inserted is formed in the rib of the segment, the optical fiber installed using this hole is not exposed to the inner surface of the pipe. For this reason, it does not become a hindrance to the circulation of the water flowing through the pipeline. Further, when repairing an optical fiber, the operation can be easily performed by pulling out from the hole formed in the segment.

  Further, in the pipe repair method according to the present invention, a plurality of segments including a segment in which an accommodation recess for accommodating a heat exchange member is formed on the inner peripheral surface is used, and the plurality of segments are combined in the circumferential direction for repair. By making it face the inner peripheral surface of the pipeline to be connected and connecting it in the axial direction, it is possible to form a continuous recess in the bottom of the repaired pipeline. For this reason, this heat exchange member can be installed by accommodating a heat exchange member in an accommodation recessed part, and shielding an open part with a lid member.

  In particular, in the process of connecting an assembly in which a plurality of segments are combined in the axial direction, an impregnated base material is accommodated in the interior between the inner peripheral surface of the pipeline to be repaired and the outer periphery of the segment, and the grout material is in a predetermined position. An inner peripheral surface and a segment of a pipe line to be repaired are disposed by arranging a bag body provided with a filling port for filling the bag body and filling grout material into the bag body from the filling port provided in the bag body. It is possible to repair the pipe line to be repaired by integrating them. Therefore, the grout material can be filled between the inner peripheral surface of the pipe line to be reliably repaired and the outer surface of the segment to integrate them.

It is a front view explaining the repair structure of the pipe line which concerns on a present Example. It is sectional drawing explaining the repair structure of the pipe line which concerns on a present Example. It is a figure explaining the example of a segment. It is a figure explaining the example of a heat exchange member. It is a figure explaining the example of a cover member. It is a figure explaining the example of a bag. It is a figure explaining the other example of an assembly. It is a figure explaining the structure of the connection part of the assembly which concerns on another example.

  Hereinafter, the pipe repair structure according to the present invention will be described. The pipe repair structure according to the present invention forms a cylindrical assembly (hereinafter simply referred to as an “assembly”) by combining a plurality of segments in the circumferential direction inside the pipe to be repaired. Are fixed in the section to be repaired while being connected in the axial direction (the axial direction of the pipe line, the axial direction of the assembly).

  When the pipe line to be repaired is repaired by the assembly, the bottom part of the pipe line that has been repaired is arranged at the bottom by a segment in which an accommodation recess for accommodating the heat exchange member is formed on the inner peripheral surface. A housing recess is formed. And the water which flows through the inside of the repaired pipe line has it by accommodating a heat exchange member in the accommodation recessed part formed continuously in the bottom part of a pipe line, and shielding the open part of an accommodation concave part with a lid member. Heat can be used efficiently.

  Furthermore, a hole for inserting an optical fiber is formed in the rib of the segment arranged at the upper part of the pipe line. For this reason, when the pipe line to be repaired is repaired by the assembly, a hole penetrates the upper part of the repaired pipe line in the axial direction of the pipe line. And by inserting an optical fiber through the hole, it is possible to lay the optical fiber using the repaired pipeline. In particular, since the optical fiber is laid using holes formed in the ribs of the segments, the optical fiber is not exposed to the inner surface of the repaired pipeline and does not become an obstacle to water flowing through the pipeline.

  In this invention, it does not limit about the use of the water which flows through a pipe line, As a pipe line which should be repaired, it is possible to target a sewer pipe, an agricultural water pipe, an industrial water pipe, etc. . In particular, since an assembly configured by combining a plurality of segments has a cylindrical shape, the target pipe line is preferably a cylindrical pipe line.

  The segment is formed in an arc shape obtained by dividing a circle having a diameter smaller than the inner diameter of the pipeline to be repaired in the circumferential direction. The number of divided circles is not limited, and is preferably set as appropriate according to conditions such as the diameter of the pipeline to be repaired and workability in the pipeline. Moreover, the material which comprises a segment is not specifically limited, It is preferable to set in consideration of conditions, such as the internal diameter of the pipe line which should be repaired, and the water quantity which flows through the repaired pipe line.

  As a material for constituting the segment, a material having high strength such as steel or reinforced plastic or a material having good moldability such as a synthetic resin can be selectively employed. For example, in the case of a segment made of a synthetic resin molded product, strength anxiety may occur. In particular, the segment in which the receiving recess is formed has a possibility that it may be disadvantageous in strength because the radial dimension (segment thickness) at the portion corresponding to the receiving recess is reduced. In such a case, it is preferable to improve the strength by interposing a metal plate such as a steel plate or a stainless steel plate when connecting an assembly in which a plurality of segments are combined in the circumferential direction in the axial direction.

  In the present invention, all or part of the housing recess for housing the heat exchange member is formed on the inner peripheral surface of the segment disposed at the bottom of the pipe. The shape and size of the housing recess are set corresponding to the shape and size of the heat exchange member to be housed. However, the depth of the housing recess is regulated by the height dimension of the rib and the thickness dimension of the arc surface. Moreover, the dimension in the circumferential direction of the housing recess is not particularly limited.

  For example, when the pipeline to be repaired is a sewer pipeline, the water flowing through the pipeline is usually set to a depth of 1/3 of the pipe diameter. For this reason, it is possible to realize efficient heat exchange by setting the width dimension of the accommodating recess to correspond to the depth of 1/3 of the tube diameter. In addition, when the target pipe is water, agricultural water, or industrial water, the water flowing through the pipe is almost full. For this reason, it is possible to implement efficient heat exchange by setting the width dimension of the accommodating recess to about 80% to about 90% of the inner surface of the pipe.

  When the assemblies are continuously arranged in the axial direction of the pipe line to be repaired, the connecting portions of the segments are connected with being shifted from each other. For this reason, the connecting portions of the segments in the adjacent assemblies are displaced in the circumferential direction, and all or a part of the accommodating recesses are formed in the segment arranged at the bottom corresponding to this displacement. Therefore, even if the segments are arranged at the bottom of the same pipeline to be repaired, the shape of the receiving recesses formed on the inner peripheral surface will be different, and the types of segments may increase. It is preferable to use a connection method that reduces the types of segments.

  Further, a hole for inserting an optical fiber is formed in the rib of the segment arranged at the upper part of the repaired pipe line. The number and size of the holes are not limited, and the holes are preferably formed according to the thickness and number of optical fibers to be inserted. In particular, as described above, when the assembly is connected in the axial direction, the position of the connection portion between the segments is shifted in the circumferential direction. Therefore, it is preferable to form the hole in consideration of this shift.

  When the assembly is continuously arranged in the axial direction of the pipe line to be repaired, the segments may be directly connected by bolts, nuts, or the like. However, since the housing recess is formed on the inner peripheral surface of the segment arranged at the bottom of the pipe line to be repaired, there is a possibility that the size of the rib is reduced at the portion corresponding to the housing recess and the strength is disadvantageous. is there. For this reason, it is preferable to connect an assembly via a reinforcement board.

  The reinforcing plate preferably has sufficiently high strength and corrosion resistance. As such a material, there are a metal plate including a steel plate, a stainless steel plate, an aluminum plate, or the like, or a non-metal plate including a hard plastic plate or the like, and these can be selected and used. In particular, when a steel plate is used as the reinforcing plate, it is preferable to carry out a rust prevention treatment by painting or plating.

  Since the reinforcing plate is disposed on the side surface in the axial direction of the arc-shaped segment, it is preferable that the reinforcing plate is formed in an arc shape like the segment. The dimension in the direction along the radius of the reinforcing plate assembly is not particularly limited, but is a dimension from the bottom of the receiving recess to the outer periphery of the segment at the maximum.

  The heat exchange member accommodated in the accommodation recess configured continuously with the repaired pipe line has a flow path through which the heat exchange medium flows. The number of the flow paths, the cross-sectional area, and the like are not limited, and are preferably set appropriately in consideration of conditions such as the flow rate and temperature of the water flowing through the repaired pipeline and the amount of heat to be used. In particular, when the heat exchange member has a plurality of flow paths, a return flow pipe is provided at the end of the flow path and connected to the adjacent flow path and at least two flow paths are connected to the heat pump, or each flow path It is preferable that the junction tube is connected to both ends of the tube and the junction tube is connected to a heat pump.

  It is preferable that the heat exchange member is detachably disposed with respect to the housing recess. For this reason, it is preferable that a heat exchange member has moderate flexibility. Moreover, it is preferable that the heat exchange member has good thermal conductivity in order to efficiently exchange heat between the water flowing through the repaired pipe line and the heat exchange medium flowing through the flow path. As described above, pipes such as aluminum pipes, copper pipes, metal pipes including thin steel pipes, or synthetic resin pipes including rubber are used as materials having moderate flexibility and good thermal conductivity. Can be selectively used. In particular, the heat exchange member is more preferably a long synthetic resin molded body having a plurality of flow paths formed therein.

  The flow path through which the heat exchange medium formed in the heat exchange member flows preferably has a large area in contact with the water flowing through the repaired pipeline. For this reason, it is preferable that the cross-sectional shape of the said channel | path is a shape extended in one direction rather than the perfect circle, such as an ellipse, an ellipse, and a trapezoid. The heat exchange member having the flow path having such a shape can be formed by pressing in a flat state when it is a metal tube. Further, when the pipe is made of synthetic resin, the flow path can be formed in a desired shape when the heat exchange member is molded.

  When the heat exchange member is configured to be detachable with respect to the housing recess, the detachable structure is not limited, and the heat exchange member may be simply housed in the housing recess. That is, since the heat exchange member has a large weight due to the circulation of the heat exchange medium, there is no possibility of moving only by being housed in the housing recess. However, when the heat exchange member is constituted by a plurality of disjoint tubes, it is preferable to constrain them so that these tubes are integrated.

  After the heat exchange member is accommodated in the accommodation recess, the accommodation recess is shielded by attaching a lid member to the opening of the accommodation recess. When a lid member is attached to the opening, a gap is formed in the housing recess between the heat exchange member and the inner surface of the segment, or between adjacent heat exchange members. Such a gap is left as it is. Alternatively, it may be filled with a fluid object such as metal powder and closed.

  The lid member that shields the opening of the housing recess may be any member that has a function of preventing a massive object from entering the housing recess, and does not limit the shape or the configuration of details. For this reason, a fine hole may be formed in the lid member, and in this case, water flowing in the pipe line enters the accommodating recess through the fine hole, and more efficient heat exchange can be realized. Become.

  Further, since the lid member is attached to and detached from the housing recess, it is preferable that the lid member is formed in an arc shape having substantially the same radius of the inner peripheral surface of the segment and has an appropriate flexibility. In particular, since the lid member attached to the housing recess serves as the inner peripheral surface at the bottom of the conduit, it is always in contact with water and a massive object that flows with the water. For this reason, it is preferable to use a material having wear resistance and corrosion resistance for the lid member.

  As materials having such wear resistance and corrosion resistance, there are ferrous metal plates such as thin steel plates and stainless steel plates, non-ferrous metal plates such as thin aluminum plates and copper plates, and synthetic resin plates. It is possible to configure the lid member by selecting a material. In addition, when the lid member is attached to the open portion of the receiving recess, a plurality of pieces having spring properties are projected from the portion corresponding to the width of the receiving recess of the lid member, and these pieces are fitted into the receiving recess. It is possible to make it press-contact with the side surface of this accommodation recessed part.

  In the present invention, the length of the housing recess formed at the bottom of the pipeline to be repaired is not limited, and can be formed across one or more manholes provided in the pipeline. . Moreover, the length of the heat exchange member arrange | positioned so that attachment or detachment with respect to an accommodation recessed part is not limited, You may arrange | position over the full length of the formed accommodation recessed part, and you may fold and arrange | position in the middle.

  When the assembly is continued in the axial direction and the pipeline is repaired, a bag body filled with grout material is disposed between the inner peripheral surface of the pipeline and the outer peripheral surface of the assembly (the outer peripheral surface of the segment), As the grout material hardens, the assembly is integrated into the conduit.

  The bag body is formed by forming a nonwoven fabric into a bag shape. The bag body contains an impregnated base material that impregnates the filled grout material, and a grout material filling port is provided at a predetermined position. The impregnated base material becomes a core when the bag body is filled with the grout material, and the material is not limited. Moreover, it is preferable that the volume of the bag body containing the impregnated base material can be reduced as much as possible in order to improve efficiency during storage or transportation. For this reason, it is preferable that an impregnation base material has compressibility. Examples of such impregnated base materials include palm insulator fibers and metal ribbons gathered like metal scrubbers, or sponges having continuous holes (continuous holes), and these can be selected and adopted. Is possible.

  The shape and dimensions of the bag body are not particularly limited, but at least the length dimension is preferably larger than the arc length of the segment. Moreover, the material which comprises a bag body is although it does not specifically limit, It is preferable to have the softness | flexibility which can respond to the surrounding unevenness | corrugation, sufficient air permeability, and water permeability. In particular, a material that can exhibit air permeability and water permeability according to the level of internal pressure when filling grout material (for example, cement milk) inside is preferable.

  By using the bag body configured as described above, when the bag body is disposed between the inner peripheral surface of the pipeline to be repaired and the outer peripheral surface of the assembly, the bag body can straddle at least two segments. is there. When the filling of the grout material into the bag body is started, the air present inside is quickly exhausted from the surface of the bag body, and then the pressure when filling the grout material is increased. Moisture permeates from the surface of the bag body and leaches out. Further, when the filling pressure of the grout is increased, the grout material is leached from the surface of the bag body. For this reason, by appropriately setting the filling pressure of the grout material to the bag body, only the inside of the bag body is filled, or the grout is leached around the bag body and integrated with the surroundings, that is, the assembly and the tube. Integration with the inner peripheral surface of the road can be achieved.

  Further, the bag body may have a width dimension larger than the dimension in the axial direction of the assembly (the width dimension of the segment). In this case, the bag body extends over at least two assemblies that are continuous in the axial direction, and these assemblies and the inner peripheral surface of the pipe line can be integrated.

  Next, the pipe repair structure according to the present embodiment will be described with reference to the drawings. In this embodiment, the pipe F to be repaired shown in FIGS. 1 and 2 is configured as a pipe for sewerage, and the pipe 1 constituting the pipe F has a deterioration of the inner peripheral surface 1b. It is constructed as a reinforced concrete pipe that has progressed and needs to be repaired. 1 and 2, the bag body G is in close contact with the inner peripheral surface 1b of the pipe F and the arcuate surface 5a of the segment, but a slight gap is provided so that the bag body G becomes clear. Explains.

  As shown in the figure, in the pipe 1 constituting the pipe F, the assemblies A and B configured by combining a plurality of segments in the circumferential direction into a cylindrical shape are arranged in the axial direction while shifting the connecting portions between the segments. Are alternately arranged and connected. A plurality of bag bodies G are arranged between the assemblies A and B and the inner peripheral surface 1b of the pipe 1 constituting the pipe F, and the grout material filled in each bag body G is cured. Thus, the pipe 1 and the assemblies A and B are integrated, whereby the pipe line F is repaired.

  The bottom portion 1a of the pipe F repaired by the assemblies A and B is configured with a receiving recess C that is continuous over the entire length of the portion to which the assemblies A and B are connected. A heat exchange member D is accommodated in the accommodation recess C, and the opening 9 of the accommodation recess C is shielded by the lid member E, thereby preventing foreign matter from entering the interior.

  In the repair structure configured as described above, a heat exchange medium such as an antifreeze liquid is caused to flow through the heat exchange member D accommodated in the accommodation recess C so that the repaired pipe F (assembly A, B) is performed. Heat exchange with the water flowing inside is performed, and it is possible to use the heat held by the water.

  In this embodiment, the assemblies A and B are formed in a cylindrical shape by combining four segments 2 to 4 formed by dividing a circle into four equal parts and connecting them by bolts and nuts (not shown). Has been. The assembly A and the assembly B are adjacent to each other in the axial direction in a state in which the segments 3 and 4 correspond to the bottom portion 1a of the pipe F and are shifted so as to rotate 45 degrees with respect to the axis O. Arranged and connected by bolts and nuts (not shown).

  The segments 2 to 4 constituting the assemblies A and B are configured as shown in FIGS. Each of the segments 2 to 4 includes a circular arc surface 5a serving as an inner peripheral surface of the repaired pipe line, and a plurality of ribs 5b provided in a direction (segment width direction) parallel to the axis O of the outer peripheral surface of the circular arc surface 5a. And a plurality of ribs 5c provided in the circumferential direction of the outer peripheral surface of the circular arc surface 5a. The ribs 5b and 5c formed along each edge on the outer peripheral surface side of the circular arc surface 5a are adjacent when the assemblies A and B are configured or when the assemblies A and B are connected. The ribs 5b and 5c of the segments are fixed to each other by bolts and nuts, and a plurality of bolt holes (not shown) are formed. As described above, the ribs 5b and 5c need to be formed along each edge on the outer peripheral surface side of the circular arc surface 5a, but may be formed inside the outer edge of the outer peripheral surface. The number of is not limited.

  In this embodiment, the segments 2 to 4 are made of high strength steel or reinforced plastic, and when the pipes F are repaired by alternately connecting the assemblies A and B, sufficient strength is exhibited. It is configured to be able to.

  As shown in FIG. 2A, the segment 2 is formed in an arc shape having an angle of 90 degrees, and a bolt hole 6 for inserting a bolt (not shown) and an optical fiber are inserted into the rib 5c. A fiber hole 6a is formed. The positions of the bolt holes 6 formed in the segment 2 are formed at overlapping positions regardless of the shift angle of the assemblies A and B in the circumferential direction when the assemblies A and B are continuous in the axial direction. Has been.

  In this embodiment, the length of the rib 2c is equally divided into 8 segments, and the segments 2 are equidistant from the ribs 5b at both ends in the circumferential direction at positions 1/8 and intermediate 1/4, respectively, from the center of the arc. Bolt holes 6 are formed at the respective positions.

  Further, the fiber hole 6a is formed at a position to be an upper portion of the pipe F when the pipe F is repaired by the assemblies A and B. The number of fiber holes 6a is not limited, but is preferably at least two or more. The diameter of the fiber hole 6a has a dimension corresponding to the diameter of the optical fiber to be inserted.

  The segment 3 is formed in a circular arc shape having an angle of 90 degrees as shown in FIG. 4B, and a concave portion having the same shape as the sectional shape of the receiving concave portion C is formed on the inner peripheral surface side of the circular arc. 7 is formed. The concave portion 7 (accommodating concave portion C) has a dimension lower than the height of the rib 5c at the center of the segment 3, and is substantially equal to or slightly equal to the thickness of the heat exchange member D accommodated in the accommodating concave portion C. Has large dimensions. The circumferential length of the recess 7 is larger than the width (circumferential dimension) of one or more heat exchange members D to be accommodated. Thus, by forming the recess 7 on the inner peripheral surface side of the segment 3, a step portion including the inner peripheral surface and the recess 7 is formed. For this reason, the arc surface 5 a of the segment 3 is formed including the surface of the formed stepped portion and the inner surface of the concave portion 7.

  The segment 4 is formed in a circular arc shape having an angle of 90 degrees, as shown in FIG. 4C, and has a cross-sectional shape of the housing recess C starting from one end surface on the inner peripheral surface side of the circular arc. A recess 8 having a half shape is formed. The concave portion 8 constitutes a part of the accommodating concave portion C, and has a dimension lower than the height of the rib 5c and substantially equal to or slightly larger than the thickness of the heat exchange member D, like the concave portion 7 of the segment 3. Have. The circumferential length of the recess 8 is larger than half the width (circumferential dimension) of one or more heat exchange members D to be accommodated. As described above, the arcuate surface 5 a of the segment 4 is formed including the surface of the stepped portion and the inner surface of the recessed portion 8.

  In addition, although the recessed part 7 in which the step part was formed in the both sides is formed in the segment 3 of a present Example, it is not necessarily limited to this shape. That is, when the length of the receiving recess C in the circumferential direction is larger than the arc length of the segment 3, a recess having the same depth as the receiving recess C is formed in the segment 3. No step is formed on the peripheral surface side.

  In addition, although the recessed part 8 which has the shape of the half of the accommodation recessed part C is formed in the segment 4 of a present Example, it is not necessarily limited to this shape, The length of the circumferential direction of the accommodation recessed part C It is set appropriately in accordance with conditions such as an arrangement position in the assembly.

  An assembly A is constituted by the segments 2 and 3 configured as described above. That is, the segment 3 in which the recess 7 is formed is arranged corresponding to the bottom 1a of the pipe F, the segment 2 is arranged in the circumferential direction of the segment 3, and the ribs 5b are fasteners including bolts and nuts ( (Not shown) is connected to form a cylindrical shape. Thus, a plurality of fiber holes 6a for inserting optical fibers are formed in the upper part of the assembly A constituted by the segments 2 and 3.

  In the assembly B, the two segments 4 are arranged so that the concave portions 8 face each other, the segments 2 are arranged in the circumferential direction of the segments 4, and the ribs 5b are connected to each other by using a fastener. Configured. In this assembly B, when the recesses 8 of the two segments 4 are arranged so as to correspond to the bottom 1a of the pipe F, a plurality of fiber holes 6a for inserting optical fibers are formed in the upper part.

  In the assemblies A and B configured as described above, the segments 3 and 4 are respectively arranged corresponding to the bottom portion 1a of the pipe F. In this state, the ribs 5c insert bolts (not shown) into the bolt holes 6. Fastened with a nut. At this time, the rib 5b, which is a connection portion between the segments of the assemblies A and B, is shifted by 45 degrees in the rotation direction with respect to the axis O, and the assemblies A and B that are continuous in the axial direction have the rib 5b. Are not aligned on the same line.

  The heat exchange member D performs heat exchange with water flowing through the pipeline F accommodated in the accommodation recess C and repaired. For this reason, the heat exchange member D is not limited as long as it can exchange heat with water, and the shape and dimensions thereof are not limited. However, as the heat exchange member D, a structure in which a plurality of tubes are simply arranged side by side may cause a problem in workability. Therefore, it is preferable that a plurality of flow paths be integrated in advance.

  In other words, the heat exchange member D is preferably configured as shown in FIGS. 4 (a) and 4 (b).

  FIG. 4A shows a heat exchange member D configured by constraining each other by the bag body 11 in a state in which a plurality of pipes 10 each having a flow path 10 a are arranged in parallel and inserted into the bag body 11. . As the tube 10, a flow path 10 a made of a synthetic resin is flattened in an oval shape, and as the bag body 11, for example, a bag made of heat-shrinkable synthetic resin is used. For this reason, the distribution member D has appropriate flexibility. In the flow member D configured as described above, a plurality of flow paths 10a can be formed in the housing recess C at a time by being inserted into the housing recess C.

  FIG. 4B shows a heat exchange member D composed of a molded body 12 formed by arranging a plurality of flow paths 12a in parallel. This molded body 12 is molded from a synthetic resin containing rubber, and has flexibility and elasticity. In the heat exchange member D configured as described above, a plurality of flow paths 12a can be formed in the housing recess C at a time by being inserted into the housing recess C. Further, by inserting the heat exchange member D into the housing recess C and mounting the lid member E on the opening 9, the molded body 12 constituting the heat exchange member D is pressed, and the molded body 12 is changed according to this pressing. In addition to the deformation, the flow path 12a can be deformed flat.

  The lid member E is attached to the housing recess C and shields the opening 9 of the housing recess C. The lid member E is not for preventing water flowing through the pipe F from entering the housing recess C, but has a function of preventing a massive object flowing with water from entering the housing recess C. .

  For this reason, as shown in FIG. 5, the lid member E is formed in an arc shape corresponding to the arc shape of the inner peripheral surfaces of the assemblies A and B, and the circle of the open portion 9 on the inner surface side of the accommodating recess C. A lid 13a having an arc dimension sufficiently larger than a dimension (width dimension) in the circumferential direction, and a distance that is substantially equal to the width dimension of the opening 9 disposed on the back surface of the lid 13a and has a predetermined length in the longitudinal direction. And a locking piece 13b fixed to the lid 13a with a gap.

  The lid 13a is made of a stainless steel plate having a thickness of about 1 mm to 2 mm. Further, the locking piece 13b is made of the same stainless steel plate as the lid 13a. By fixing the locking piece 13b to the back surface of the lid 13a by means such as welding, the spring property can be exhibited. It is configured. In addition, as a lid 13a, it is naturally possible to use a rust-proof steel plate, an aluminum plate, a metal plate such as a copper plate, or a synthetic resin plate.

  Therefore, the cover member E is opposed to the opening 9 of the housing recess C in which the heat exchange member D is arranged, and the engaging piece 13b is fitted into the housing recess C so as to be mounted and the opening 9 can be shielded. is there. Further, the lid member E can be detached from the housing recess C by grasping and pulling up the free end of the lid 13a.

  The bag G disposed between the inner peripheral surface of the pipe F and the outer peripheral surfaces of the assemblies A and B is a grout material between the pipe F and the assemblies A and B at the stage of repairing the pipe F. Is reasonably performed. For this reason, the bag body G has flexibility capable of following the surrounding irregularities, and grouting the grouting material in accordance with the pressure when filling the grouting material, or leaching the grouting material. It suffices if the pipe F and the assemblies A and B can be integrated without causing them.

  As shown in FIG. 6, such a bag body G is constituted by a bag 15 that contains an impregnated base material 14 therein and is provided with a filling port 15 a at a predetermined position. The impregnated base material 14 is formed in a metal scrub shape in which thin and narrow ribbons made of palm palm fibers or stainless steel are randomly arranged. However, the present invention is not limited to this configuration, and these fibers or ribbons formed into a mat shape or a sponge with continuous holes may be used.

  Moreover, the bag 15 is comprised with the nonwoven fabric which has a softness | flexibility, high air permeability, and water permeability. For this reason, when the cement milk as the grout material is filled through the filling port 15a, depending on the pressure at the time of filling, the air inside is quickly removed, the moisture of the cement milk is leached from the bag 15, and It is possible to leach cement milk.

  In particular, since the bag 15 has flexibility, the bag body G is brought into close contact with the inner peripheral surface 1b of the pipe F with the filling of the grout material, and the outer periphery straddling the ribs 5b and 5c of the assemblies A and B. It becomes possible to adhere to the surface. Then, as the grout material is hardened, the pipe F and the assemblies A and B can be integrated.

  In the pipe F repaired as described above, the assemblies A and B are arranged in the axial direction, and the grout material is filled in the bag body G arranged between the pipe F and the assemblies A and B. By doing so, the pipe F and the assemblies A and B are integrally repaired when the grout material is hardened. The segments 3 and 4 constituting the assemblies A and B are arranged corresponding to the bottom 1a of the pipe F, so that a continuous receiving recess C is formed in the bottom 1a of the repaired pipe F. The By accommodating the heat exchanging member D in the housing recess C and shielding the opening 9 by the lid member E, it is possible to prevent a massive object from entering the housing recess C.

  Next, a procedure for repairing the pipe F having the above structure will be described with reference to FIGS. First, the inner peripheral surface 1b of the pipe 1 constituting the pipe line to be repaired is prepared for repair work, and a predetermined number of segments 2 to 4 and bag bodies G are prepared.

  The bag body G is laid on the inner peripheral surface 1 b of the tube 1. Next, the segment 3 is arranged inside the laid bag body G so that the recess 7 corresponds to the bottom 1a of the pipe 1, and the segment 2 is continued in the circumferential direction of the segment 3 and fastened by a fastener. The assembly A is configured. The segment 4 is disposed adjacent to the assembly A with the recess 8 corresponding to the bottom 1a of the tube 1, and the segment 2 is continuously connected in the circumferential direction of the segment 4 and fastened by a fastener. The assembly B is brought into contact with the assembly A and is connected by bolts and nuts through the bolt holes 6 to be continuous. At this time, it is preferable that the fiber hole 6a formed in the rib 5c of the segment 2 located in the upper part of the repaired pipe F is communicated and passed through the pipe.

  After the assemblies A and B are continuously fastened inside the laid bag body G, a grout material (for example, cement milk) supply member is connected to the filling port 15a of the bag body G and filled. As the grout material is filled into the bag body G, the air present inside the bag 15 passes through the bag 15 and is removed, and the water contained in the grout material passes through the bag 15 as the filling pressure increases. Then, as the filling pressure further increases, the grout material itself leaches out of the bag 15 and fills the gap formed between the inner peripheral surface 1b of the tube 1 and the assemblies A and B. Further, as the bag body G is filled with the grout material, the assemblies A and B float so as to coincide with the axis O of the tube 1.

  The procedure for connecting the assemblies A and B in the direction of the axis O and the operation for filling the grout material into the bag body G laid on the inner peripheral surface 1b of the pipe 1 is not particularly limited. . For example, each time a plurality of assemblies A and B are continued in the width direction of the bag body G, the bag body G may be filled with a grout material, and the bag body G is laid over the entire length of the pipeline to be repaired. In addition, after disposing the assemblies A and B on the inner side, the grout material may be sequentially filled into the laid bag body G. In particular, when the grout material is filled after the bags G and assemblies A and B are arranged over the entire length of the pipeline to be repaired, the filling port 15a of each bag 15 is extended to the end of the pipeline to be repaired. It is necessary to extend it.

  As described above, the assemblies A and B are arranged over the entire length of the pipeline to be repaired, the bag body G is arranged, and the grout material filled in the bag body G is cured and repaired. An accommodation recess C continuous in the direction of the axis O is formed on the inner peripheral surface of the bottom, and the fiber hole 6a continues in the direction of the axis O in the upper rib 5c.

  The heat exchange member D is laid and accommodated in the accommodation recess C. After that, a folding pipe is connected to the end of the flow path constituting the heat exchange member D to form one long flow path, and the ends of the flow path are configured as an inflow path and an outflow path for the heat exchange medium. . Alternatively, collecting pipes for collecting a plurality of flow paths are connected to both end portions of the heat exchange member D to form an inflow path and an outflow path for the heat exchange medium. And the said inflow path and outflow path are connected to a heat pump.

  Next, the section to be repaired of the pipe line F can be repaired by attaching the lid member E to the housing recess C housing the heat exchange member D and shielding the opening 9 of the housing recess C. .

  Further, the end treatment is performed by inserting the optical fiber into the fiber hole 6a formed in the rib 5c on the outer peripheral side of the arcuate surface 5a of the segment 2 which is the upper part of the repaired pipe F and attaching sockets or the like to both ends. It is possible to prepare for optical communication.

  Next, another example of the assembly and the structure of the connecting portion of the assembly will be schematically described with reference to FIGS. The segments 20 to 22 constituting the assembly according to this example are formed in the same manner as the segments 2 to 4 in the above-described embodiment, and the different part is the circumferential direction of the outer peripheral surface of the arc surface 23a (5a). The groove 23d is provided in the plurality of ribs 23c (5c).

  The segments 20 to 22 constituting the assemblies A and B according to the present example are formed by a synthetic resin molded body having a relatively low strength. When the assemblies A and B are connected in the axial direction, the reinforcing plate 25 is provided. By interposing it, the strength is improved.

  The reinforcing plate 25 is disposed over the entire circumference of the ribs 23c on the side surfaces in the axial direction of the assemblies A and B. The ribs 23c of the assemblies A and B are integrally formed using bolts and nuts (not shown). It is connected to the. The material of the reinforcing plate 25 is not particularly limited, but it is preferable that the reinforcing plate 25 has sufficient strength even if it is relatively thin. As such a reinforcing plate 25, it is possible to selectively use a metal plate such as a steel plate, a stainless steel plate or an aluminum plate, a hard plastic plate, or the like. In particular, when a steel plate is used, it is preferable to carry out a rust prevention treatment including plating.

  The reinforcing plate 25 may be formed in an arc shape having a width dimension equal to the height dimension of the ribs 23c of the segments 20-22. In this case, the inner peripheral surface of the reinforcing plate 25 is exposed to the inner surface of the repaired pipe line, and there is a possibility that the reinforcing plate 25 may be corroded or resist the flow of water. For this reason, in this example, the reinforcing plate 25 is disposed on the outer peripheral surface side of the rib 23c so that it can be reinforced without being exposed to the inner surface of the conduit.

  The width dimension of the reinforcing plate 25 is substantially equal to the dimension obtained by adding the depth dimension of the accommodating recess C and the thickness of the bottom surface of the accommodating recess C so that the accommodating recess C formed in the segment 21 can be avoided. have. Moreover, the step part 25a is formed so that it can mutually restrain by overlapping the both ends of the reinforcement board 25 mutually.

  It does not limit whether the reinforcing plate 25 protrudes to the outer peripheral side when the assemblies A and B are connected, and the outer diameters of the assemblies A and B are larger than the inner diameter of the pipe 1 constituting the pipe F. If it is small enough, there is no support even if it is a little larger. Further, the thickness of the reinforcing plate 25 is not particularly limited, and is preferably set as appropriate assuming the force acting on the assemblies A and B.

  A groove 23d is formed in the rib 23c provided in the circumferential direction of the segments 20 to 22 from the outer peripheral side to the inner peripheral side. The width dimension (the dimension in the radial direction) of the groove 23d is smaller than the dimension obtained by adding the depth dimension of the receiving recess C and the thickness of the bottom surface so as to avoid the receiving recess C formed in the segment 21. And the depth dimension is equal to or slightly larger than half the thickness of the reinforcing plate 25.

  In the pipe F repaired by connecting the assemblies A and B in the axial direction while interposing the reinforcing plate 25 and overlapping both ends of the reinforcing plate 25 as described above, each segment 20 to 22 is repaired. Although it is a molded article of synthetic resin, it is possible to exhibit high strength.

  The pipe repair structure according to the present invention is advantageous for use in almost all pipes through which water flows and which can be repaired using segments.

A, B assembly C receiving recess D heat exchange member E lid member F conduit G bag body 1 tube 1a bottom 1b inner peripheral surface 2-4 segment 5a arc surface 5b, 5c rib 6 hole 7, 8 recess 9 opening 10 Tube 10a Channel 11 Bag 12 Molded body 12a Channel 13a Lid 13b Locking piece 14 Impregnated base material 15 Bag 15a Filling port 20-22 Segment 23a Arc surface 23b, 5c Rib 23d Groove 25 Reinforcement plate 25a Step

Claims (6)

A repair structure for a pipe line that is repaired by connecting and arranging in an axial direction an assembly in which a plurality of segments having ribs provided on the outer periphery in the pipe line to be repaired are combined in the circumferential direction,
A housing recess for housing the heat exchange member is formed on the inner peripheral surface of the segment arranged at the bottom of the pipeline to be repaired, and the plurality of segments are connected in the axial direction of the pipeline to be repaired and repaired. When the pipeline to be repaired is repaired, the housing recess is continuously formed in the axial direction at the bottom of the repaired pipeline,
A pipe repair structure characterized in that a heat exchange member is housed in the continuous housing recess and an open portion of the housing recess is shielded by a lid member.   2. When connecting an assembly in which a plurality of segments are combined in the circumferential direction in an axial direction, they are connected to each other while being shifted from each other without matching the connecting portions of the segments of adjacent assemblies. Repair structure of the described pipeline.   When an assembly composed of a plurality of segments is connected in the axial direction while shifting the connecting portions of the segments, when the connecting portions of the segments correspond to the bottom of the pipeline to be repaired, both sides of the connecting portions A part of the accommodation recessed part which accommodates each heat exchange member is formed in the internal peripheral surface corresponding to the bottom part of the pipe line which should be repaired in the segment arrange | positioned in Claim 2 characterized by the above-mentioned. Pipe repair structure.   4. When connecting an assembly in which a plurality of segments are combined in a circumferential direction in an axial direction, the segments of adjacent assemblies are connected through a reinforcing plate. The repair structure of the pipeline.   A hole for inserting an optical fiber is formed in the rib of the segment arranged at the upper part of the pipeline to be repaired. When the pipeline to be repaired is repaired by a plurality of segments, the repaired pipeline The pipe repair structure according to any one of claims 1 to 4, wherein the hole is formed so as to penetrate in the longitudinal direction in an upper portion of the pipe. Using a plurality of segments including a segment in which a housing recess for housing a heat exchange member is formed on the inner peripheral surface,
The segment in which the plurality of segments are inserted into the pipeline to be repaired to form a receiving recess is disposed at a portion corresponding to the bottom of the pipeline to be repaired, and another segment is arranged in the circumferential direction of the segment. While facing the inner peripheral surface of the pipeline to be repaired in combination and connecting in the axial direction,
Between the inner peripheral surface of the pipeline to be repaired and the outer periphery of the segment, an impregnated base material is accommodated inside, and a bag body provided with a filling port for filling grout material at a predetermined position is disposed,
By filling the inside of the bag body with a grout material from the filling port provided in the bag body, the inner peripheral surface of the pipeline to be repaired and the segment are integrated to repair the pipeline to be repaired,
When the pipeline to be repaired is repaired by a plurality of segments connected in the axial direction, the heat exchange member is accommodated in the accommodation recess configured in the axial direction at the bottom of the repaired pipeline and the accommodation recess is opened. A pipe repairing method characterized by shielding a portion with a lid member.

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