JP2006069092A - Warm water spray nozzle with buoyancy body and tube lining method using the nozzle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a tube lining method which can effectively heat a tube lining material by showering warm water surely from a warm water hose into the tube lining material while warm water is stored to a prescribed height in the tube lining material. <P>SOLUTION: In the tube lining method, the tube lining material 13 is reversed and inserted into a pipe line 10 by the pressure of fluid, and while the tube lining material 13 is expanded by the pressure of the fluid and pressed to the inner wall of the pipe line 10, warm water is showered from the warm water hose 27 brought into the tube lining material 13 to heat the tube lining material 13, so that a thermosetting resin contained in the tube lining material 13 is cured. At least two warm water spray nozzles with buoyancy bodies 1, each of which is formed by fixing the hollow buoyancy body to the inside of a cylindrical nozzle main body with at least two warm water ejection ports formed on its periphery, are attached to the warm water hose 27. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a buoyant body hot water injection nozzle used for lining pipes such as sewage pipes, water pipes, gas pipes and underground cable pipes, and a pipe lining method using the same.

  When pipes such as sewage pipes buried in the ground have deteriorated, pipe lining methods have already been developed to repair the pipes by lining the inner peripheral surface without excavating the pipes from the ground. Proposed and put to practical use. That is, in this pipe lining method, a pipe lining material obtained by impregnating a curable resin into a flexible resin absorbent whose outer surface is coated with a highly airtight film is reversed into a pipe line by fluid pressure. Inserting and pressing on the inner peripheral surface of the pipe line, heating the pipe lining material while this state is maintained, etc., and curing the curable resin impregnated therein, lining the inner peripheral surface of the pipe line It is a method of applying

  By the way, in the conventional construction method, as a method of heating and curing the thermosetting resin impregnated in the pipe lining material inverted and inserted in the pipe line, all the water filled in the pipe lining material is heated. Therefore, it is necessary to heat a large amount of water, especially when the pipe diameter is large or the pipe length is long. For this reason, boilers, hot water pumps, etc. In addition to increasing the size and cost of the heating / circulation facility, there are problems that the construction time becomes longer.

  Therefore, as shown in FIG. 16, the pipe lining material 113 is expanded by the pressure of the compressed air supplied from the air compressor 122 into the pipe lining material 113 that is inverted and inserted into the pipe 110, and this is connected to the pipe 110. The hot water heated to a predetermined temperature by the boiler 134 while being pressed against the inner wall of the pipe is heated from the hot water hose 127 to the inside of the pipe lining material 113 to heat the pipe lining material 113 and is also used for heating. A method has been proposed in which warm water accumulated at the bottom of the material 113 is sent to the boiler 134 by a warm water pump 133 and heated again, and this warm water is circulated repeatedly to heat the pipe lining material 113 (see Patent Document 1). .

  Thus, according to the above construction method, since the heat energy required for heating the hot water showered inside the pipe lining material 113 can be reduced, the boiler 134 and the heating / circulation equipment are reduced in size and size, and the pipe line Even if 110 has a large diameter or a long diameter, it can be repaired in a short time and at a low cost.

Japanese Patent No. 2501048

  However, in the above-described pipe lining method, when hot water showered from the hot water hose 127 and used for heating the pipe lining material 113 is excessively accumulated in the pipe lining material 113, as shown in FIG. There arises a problem that the hose 127 sinks and hot water is not showered from the hot water hose 127. For example, when the discharge port for discharging the hot water to the outside of the pipe lining material 113 is upstream, or when the pipe line 110 is slackened on the way, the hot water has accumulated too much in the pipe lining material 113. End up.

  On the other hand, if the hot water is showered in a state where hot water is stored at a height of 1/3 or more of the inner diameter of the pipe lining material at the bottom of the pipe lining material, the pipe lining material is efficiently heated and cured uniformly. It has been confirmed that it can be made.

  The present invention has been made in view of the above circumstances. The purpose of the present invention is to reliably warm the hot water from the hot water hose to the inside of the pipe lining material while accumulating the hot water to a predetermined height inside the pipe lining material. Another object of the present invention is to provide a hot water spray nozzle with a buoyancy body capable of effectively heating a pipe lining material and a pipe lining method using the same.

  In addition, the pipe lining material is inverted and inserted into the pipe line by fluid pressure, but when water pressure is used as the fluid pressure, it is necessary to discharge water after the reverse insertion of the pipe lining material into the pipe line. After that, it is necessary to supply compressed air into the pipe lining material and press the pipe lining material against the inner wall of the pipe line. For this reason, the work becomes inefficient and the work time becomes long, and there is a problem that a large amount of water is required.

  Accordingly, an object of the present invention is to provide a pipe lining method capable of efficiently performing a lining operation in a short time while minimizing the amount of water used.

  In order to achieve the above object, the invention described in claim 1 includes a cylindrical nozzle body in which a plurality of hot water injection ports are formed on the outer periphery, and a hollow buoyancy body fixed inside the nozzle body. A hot water spray nozzle with a buoyancy body is constructed.

  According to a second aspect of the present invention, in the first aspect of the present invention, the buoyancy body is fixed inside the nozzle body through a support plate.

  According to a third aspect of the present invention, in the first or second aspect of the present invention, the buoyancy body is made of a metal.

  According to a fourth aspect of the present invention, in the invention according to any one of the first to third aspects, the screw member in which the hot water injection port is formed is screwed onto the outer periphery of the nozzle body.

  According to a fifth aspect of the present invention, a tubular lining material obtained by impregnating a tubular resin absorbent material having an outer surface coated with a plastic film with an uncured thermosetting resin is inverted and inserted into a pipeline by fluid pressure. In the state where the pipe lining material is expanded by fluid pressure and pressed against the inner wall of the pipe line, the hot water hose drawn into the pipe lining material is showered to heat the pipe lining material. In the pipe lining method for curing the thermosetting resin impregnated in the pipe lining material, a hollow buoyancy body is fixed inside a cylindrical nozzle body in which a plurality of hot water injection ports are formed on the outer periphery. A plurality of hot water injection nozzles with buoyant bodies are attached in the middle of the hot water hose.

  The invention according to claim 6 is the invention according to claim 5, wherein one end of the pipe lining material is folded outward, water is poured into the folded portion, and the pipe lining material is inverted and inserted into a part of the pipe line by water pressure. After that, in a state where a part of the pipe lining material is pressed by the presser bar and deformed, air is supplied to the pipe lining material to further reversely insert the pipe lining material into the pipe line, and this pipe lining material is reversely inserted. When the pipe reaches the middle of the pipeline, the end of the pipe lining material is closed to form a sealed space inside the pipe lining material, and the hot water hose is stored in the sealed space, and then compressed into the sealed space. Air is supplied, the pipe lining material is inverted and inserted by air pressure, and the hot water hose connected to the inverted end of the pipe lining material is drawn into the pipe lining material.

  The invention according to claim 7 is the invention according to claim 6, wherein the hot water hose is stored in the sealed space in a folded state.

  The invention according to claim 8 is characterized in that, in the invention according to claim 6, the hot water hose is housed in the sealed space in a state of being wound around a hose reel.

  A ninth aspect of the present invention provides the flexible suction according to the eighth aspect of the present invention, wherein the hose reel is provided with a swivel joint, the inside of the rotating shaft is a hot water transport path, and the rotating shaft has a circular cross section without pressure. One end of a hose is connected, and the other end of the suction hose is connected to the hot water hose that is flat without pressure.

  The invention according to claim 10 is the invention according to any one of claims 5 to 9, wherein hot water is stored at a height of 1/3 or more of the inner diameter of the pipe lining material at the bottom of the pipe lining material. Features.

  According to the pipe lining method of claim 5 using the hot water injection nozzle with a buoyancy body according to claims 1 to 4, a plurality of hot water hoses are provided even when hot water is accumulated at the bottom of the pipe lining material. Hot water spray nozzles with buoyant bodies are attached, and the hot water spray nozzles with buoyancy bodies float on the water surface due to the buoyancy acting on the buoyancy bodies provided on them, so that hot water is reliably discharged from these hot water spray nozzles with buoyancy bodies The pipe lining material can be effectively heated by warm water by spraying.

  According to the sixth aspect of the present invention, as the fluid pressure used for the reverse insertion of the pipe lining material into the pipe line, the hydraulic pressure until the pipe lining material is reversely inserted to approximately 1/4 of the entire length of the pipe line. After that, air pressure was used, so there was no need to discharge a large amount of water after reverse insertion of the pipe lining material into the pipe line. The pipe lining material can be pressed against the inner wall of the pipe using the air pressure used for the reverse insertion of the pipe as it is. For this reason, work becomes efficient, work time is shortened, and the amount of water used can be minimized.

  According to the seventh aspect of the present invention, the hot water hose accommodated in a state of being folded in the sealed space can be sent out together with the reverse insertion of the pipe lining material into the pipe line and drawn into the pipe lining material.

  According to the eighth aspect of the present invention, the hot water hose accommodated in the sealed space in a state of being wound around the hose reel is sent out together with the reverse insertion into the pipe line of the pipe lining material and drawn into the pipe lining material. it can.

  According to invention of Claim 9, warm water can be sent to a warm water hose through a swivel joint and a suction hose from a rotating shaft, and warm water is reliably ejected from a warm water spray nozzle with a buoyant body attached to the warm water hose. The tube lining material can be effectively heated.

  According to invention of Claim 10, a pipe lining material can be heated efficiently and this can be hardened uniformly.

  Embodiments of the present invention will be described below with reference to the accompanying drawings.

(Hot water injection nozzle with buoyancy body)
FIG. 1 is a side sectional view of a hot water spray nozzle with a buoyant body according to the present invention, FIG. 2 is a sectional view taken along the line AA in FIG. 1, and FIG.

  A buoyancy body-attached hot water spray nozzle 1 according to the present invention has a cylindrical nozzle body 2, and a hollow buoyancy body 3 is fixedly provided at the center of the shaft.

  A hot water hose attachment portion 2a having a smaller diameter than the central portion is formed at both axial end portions of the nozzle body 2, and a plurality of axial hot water hose attachment portions 2a except for these hot water hose attachment portions 2a are provided at two axial locations on the outer periphery. Eight screw members 4 (in the example shown in the drawing) are detachably screwed around the entire circumference at an equal angular pitch (45 ° pitch). Here, as shown in FIG. 3, each screw member 4 is provided with a circular hole 4 a penetrating at the center of the shaft, and a circular hole-shaped hot water jet is formed at the open end of the circular hole 4 a. A hot water injection tip 5 in which a mouth 5a is formed is screwed. Further, two hot water injection ports 4b extending obliquely from the circular hole 4a are formed at the head of the screw member 4.

  The buoyancy body 3 is mounted and supported concentrically at the axial center of the nozzle body 2 by a plurality (four in the illustrated example) of support plates 6 extending radially from the outer peripheral surface of the buoyancy body 3 as shown in FIG. It is positioned in the axial direction by a fixed arm 7 shown.

  The nozzle body 2, the buoyant body 3, the support plate 6, the fixed arm 7 and the like constituting the buoyant body-attached hot water spray nozzle 1 configured as described above are made of metal such as aluminum. In particular, deformation of the buoyancy body 3 can be suppressed by forming the buoyancy body 3 affected by heat and pressure (external pressure) from metal.

(Hot water spray nozzle with buoyancy body according to another form)
Next, a hot water spray nozzle with a buoyant body according to another embodiment will be described with reference to FIGS.

  4 is a side sectional view of a hot water spray nozzle with a buoyant body according to another embodiment, FIG. 5 is an enlarged detail view of a portion C in FIG. 4, FIG. 6 is a perspective view of a screw member, and FIG.

  The buoyant body-attached hot water spray nozzle 1 ′ according to the present embodiment is configured by fixing a hollow buoyant body 3 ′ at the center of the shaft in the cylindrical nozzle body 2 ′. The large-diameter cylindrical central portion 2A ′ and the small-diameter cylindrical hot water hose attachment portions 2a ′ at both ends in the axial direction are connected by a tapered cylindrical connecting portion 2B ′. A plurality of screw members 4 ′ are detachably screwed around the entire circumference at equal angular pitches at two locations in the axial direction of the central portion 2 </ b> A ′ and the connecting portion 2 </ b> B ′ of the nozzle body 2 ′.

  Here, as shown in FIGS. 5 and 6, each screw member 4 ′ is provided with a circular hole-shaped hot water injection port 4 a ′ at the center of the shaft, and a hexagonal hole 4 b ′ in the head. The hot water injection port 4a ′ is opened in the hexagonal hole 4b ′.

  Further, conical cones 3a 'are attached to both axial end portions of the buoyancy body 3', and the buoyancy body 3 'has a plurality (four in the illustrated example) extending radially from the outer peripheral surface thereof. The support plate 6 ′ is concentrically mounted and supported at the axial center portion in the nozzle body 2 ′.

  The nozzle body 2 ', the buoyant body 3', the support plate 6 ', and the like constituting the buoyant body-attached hot water spray nozzle 1' configured as described above are made of metal such as aluminum.

(Pipe lining method)
Next, a pipe lining method constructed using the buoyant body-attached hot water injection nozzle 1 shown in FIG. 1 will be described with reference to FIGS. 8 to 12 are cross-sectional views showing the pipe lining method according to the present invention in the order of steps, and FIG. 13 is a cross-sectional view taken along the line DD of FIG.

  8 to 11, reference numeral 10 denotes a pipe such as a sewage pipe buried substantially horizontally in the ground. When the pipe 10 is lined, it is introduced into the manhole 11 as shown in FIG. One end of the tube lining material 13 is attached to the outer periphery of the opening of the lower end cylindrical portion 12a of the reversing nozzle 12 by bending it outward. A drain port 12 b is provided at the lower end of the opposite end nozzle 12.

  An upper collar 15 is attached to the reversing nozzle 12 via a guide tube 14, and a hot water hose insertion port 15 a is formed on the side of the upper collar 15.

  By the way, the pipe lining material 13 is constituted by impregnating an uncured thermosetting resin into a tubular resin absorbent material formed by adhering a plastic film on the outer surface. Here, a nonwoven fabric such as polyester, polypropylene, and acrylic is used as the tubular resin absorbent material, and a composite film containing TBP, nylon, polyethylene, or the like is used as the plastic film to be applied to the outer surface thereof. Further, as the uncured thermosetting resin impregnated in the tubular resin absorbent material, an unsaturated polyester resin, an epoxy resin, a vinyl ester resin, or the like is used.

  Thus, as shown in FIG. 8, when water is injected into the upper collar 15 from the water injection hose 16, the pipe lining material 13 is inverted and inserted into the pipe line 10 by the pressure of this water. When the reversal insertion of 13 progresses about 1/4 of the entire length of the pipe line 10, the water injection from the water injection hose 16 is stopped, and as shown in FIG. The pipe lining material 13 is partially deformed by pressing the part downward to form a space S1 partitioned by water inside the pipe lining material 13, and compressed air is supplied from the air compressor 18 installed on the ground. The tube 19 is supplied to the space S1.

  Here, the air tube 19 is drawn into the pipe lining material 13 by the method shown in FIG. That is, a relatively rigid air supply hose 20 is inserted from the upper part of the upper collar 15, passed through the guide tube 14 and the reversing nozzle 12 and pushed into the pipe lining material 13, and compressed air from the air compressor 18. The air tube 19 is inverted and inserted into the air supply hose 20. Then, the end portion (inversion end) of the air tube 19 extends outward from the open end of the air supply hose 20 as indicated by a broken line in FIG. 10 and is compressed air that is ejected from an air outlet formed in this portion. Is supplied to the space S <b> 1 inside the pipe lining material 13.

  When compressed air is supplied from the air tube 19 to the space S1 inside the pipe lining material 13 as described above, the pipe lining material 13 is inverted and inserted into the pipe line 10 by the air pressure, as shown in FIG. When the pipe lining material 13 is inverted and inserted to approximately ½ of the entire length of the pipe line 10, as shown in FIG. 11, the upper lid 21 is attached to the upper collar 15. Here, an air hose 23 extending from an air compressor 22 installed on the ground is connected to the upper lid 21.

  Further, a hot water hose insertion port 15a is opened at the side of the upper collar 15, and a hose reel sealed container 24 is attached to the hot water hose insertion port 15a. A hose reel 15 is housed in the hose reel sealed container, and a suction hose 26 and a hot water hose 27 connected thereto are wound around a rotating shaft (not shown) of the hose reel 25. Here, the suction hose 26 is a flexible hose having a circular cross section with no pressure, and one end of the suction hose 26 is connected to the rotating shaft of the hose reel 25. The hot water hose 27 is a hose that is flat with no pressure, and the other end is connected to the inverted end (end portion) of the pipe lining material 13, and a plurality (ten or more) of the buoyancy is provided in the middle thereof. Body-equipped hot water spray nozzles 1 (see FIG. 1) are attached at appropriate intervals. The hot water hose 27 is a flat hose having a diameter of 2 to 3 inches made of PVC and woven fabric.

  By the way, the rotating shaft of the hose reel 25 is hollow, and the inside thereof constitutes a hot water transport path, one end of the suction hose 26 is connected to one end thereof, and the other end is connected via a swivel joint 28. A hot water hose 29 is connected. And the warm water hose 19 is connected to the side part of the warm water tank 30 installed on the ground, and the warm water pump 31 is provided in the middle. Further, a hot water pipe 32 is led out from the side of the hot water tank 30, and the hot water pipe 32 is raised upward to open above the hot water tank 30, and in the middle of the hot water pump 33 and the boiler 34. Is attached. A drain hose 35 connected to the drain port 12b of the reversing nozzle 12 extends to the ground and opens above the hot water tank 30. The hot water tank 30 stores hot water heated to a temperature of 60 ° C. to 90 ° C. by the boiler 34.

  Thus, in the state shown in FIG. 11, a sealed space S <b> 2 is formed inside the upper collar 15, the hose reel sealed container 24, the guide tube 14, the reversing nozzle 12, and the pipe lining material 13. When the compressed air discharged from the air hose 23 is supplied from the air hose 23 to the sealed space S2, the pipe lining material 13 is inserted while reversing the inside of the pipe line 10 by the air pressure, and attached to the reversing end of the pipe lining material 13 together with this. The hot water hose 27 thus drawn is drawn into the pipe lining 13. At this time, the hot water hose 27 and the suction hose 26 stored in a state wound around the hose reel 25 in the hose reel sealed container 24 are sequentially sent out from the hose reel 25.

  Then, as shown in FIG. 12, when the pipe lining material 13 is inverted and inserted over the entire length of the pipe line 10, the hot water hose 27 is drawn into the pipe lining material 13, but 0.02 MPa in the sealed space S <b> 2. The hot water in the hot water tank 30 is driven from the hot water hose 29 by driving the hot water pump 31 in a state where the air pressure of .about.0.1 MPa is applied and the pipe lining material 13 is expanded and pressed against the inner wall of the pipe line 10. It flows to the hot water hose 27 through the rotating shaft, the swivel joint 28 and the suction hose 26. Then, the hot water is sprayed from the plurality of hot water spray nozzles with a buoyancy body attached to the hot water hose 27 and is showered inside the pipe lining material 13. That is, hot water is ejected vigorously from a plurality of hot water injection ports 4b, 5a (see FIG. 3) screwed to each buoyant body-attached hot water injection nozzle 1 and formed in a plurality of screw members 4. The thermosetting resin which is heated by the hot water showered inside and impregnated therein is cured by heating. As a result, the pipe 10 is repaired by lining the inner wall with the hardened pipe lining material 13.

  By the way, the hot water that has been subjected to the heating of the pipe lining material 13 and has fallen in temperature accumulates at the bottom of the pipe lining material 13, but the hot water that has accumulated at the bottom of the pipe lining material 13 is drained by the internal pressure of the sealed space S2. The hot water is discharged to the hose 35, returned to the hot water tank 30 through the drain hose 35, and the returned hot water is heated to a predetermined temperature by the boiler 34 and then sent to the hot water hose 27 to be pipe lining again. The material 13 is used for heating. Thus, the pipe lining material 13 is continuously heated by the hot water circulating in the closed loop.

  Thus, in the present embodiment, a plurality of hot water injection nozzles 1 with a buoyant body are attached to the hot water hose 27 even when hot water is accumulated at the bottom in the pipe lining material 13 as described above. Since the buoyant body-attached hot water spray nozzle 1 floats on the water surface as shown in FIGS. 12 and 13 due to the buoyancy acting on the buoyancy body 3 provided in the buoyant body-attached hot water spray nozzle 1, the buoyancy body attached Hot water can be reliably jetted from the hot water jet nozzle 1 to effectively heat the pipe lining material 13 with the hot water.

  By the way, if hot water is showered in a state where hot water is accumulated at a bottom of the pipe lining material 13 to a predetermined height (specifically, a height of 1/3 or more of the inner diameter of the pipe lining material 13), the pipe lining is obtained. It has been confirmed that the material 13 can be efficiently heated and cured uniformly. Therefore, in the present embodiment, the hot water can be reliably showered in a state where the hot water is accumulated at the bottom of the pipe lining material 13 to a height of 1/3 or more of the inner diameter of the pipe lining material 13. The lining material 13 can be efficiently heated. When the hardening of the pipe lining material 13 is nearing the end, the hot water in the pipe lining material 13 may be discharged, and the amount of hot water accumulated at the bottom of the pipe lining material 13 may be gradually reduced.

  In the present embodiment, as the fluid pressure used for the reverse insertion of the pipe lining material 13 into the pipe line 10, the pipe lining material 13 is inverted and inserted to approximately ¼ of the entire length of the pipe line 10. Since the water pressure is used and the air pressure is used thereafter, it is not necessary to discharge a large amount of water after the tube lining material 13 is inserted into the pipe 10 in the reverse direction. The air pressure used for the reverse insertion of the pipe lining material 13 can be used as it is to press the pipe lining material 13 against the inner wall of the pipe line 10. For this reason, work becomes efficient, work time is shortened, and the amount of water used can be minimized.

  By the way, in the above embodiment, the hot water hose 27 is housed in a state of being wound around the hole reel 25 in the hose reel sealed container 24. However, as shown in the cross-sectional view of FIG. You may make it accommodate in sealed space S2 in the state folded.

  That is, in the example shown in FIG. 14, the upper lid 37 is attached to the lining material attachment nozzle 36 to which one end of the pipe lining material 13 is attached to form a sealed space S2 inside the pipe lining material 13, and this sealed space S2 The hot water hose 27 is housed in a state suspended from a plurality of hangers 38. At this time, one end of the hot water hose 27 is connected to the reversing end of the pipe lining material 13 and the other end is connected to the hot water suction hose 40 introduced airtightly through the upper lid 37 by the seal portion 39 into the sealed space S2. A part of the hot water hose 27 is temporarily fixed to a temporary fixing portion a on the inner surface of the upper lid 37 with an adhesive, an adhesive tape, or the like. In FIG. 14, 22 is an air compressor, 23 is an air hose, 41 is a pressure gauge, and 35 is a drain hose.

  In the example shown in FIG. 15, a hot water hose storage tank 42 is attached to the hot water hose insertion port 37 a of the upper lid 37, and the hot water hose 27 is stored in a state suspended from a plurality of hangers 43 in the hot water hose storage tank 42. ing. At this time, one end of the hot water hose 27 is connected to the reversing end of the pipe lining material 13 and the other end is connected to the hot water suction hose 40 introduced airtightly through the upper lid 37 by the seal portion 39 into the sealed space S2. A part of the hot water hose 27 is temporarily fixed to an inner surface of the upper lid 37 and an inner surface of the hot water hose insertion port 37a by an adhesive, an adhesive tape, or the like. In FIG. 15, 22 is an air compressor, 23 is an air hose, and 35 is a drain hose.

  In the above embodiment, the buoyant body-attached hot water spray nozzle 1 shown in FIG. 1 is used. However, even if the buoyant body-attached hot water spray nozzle 1 ′ shown in FIG. Obtainable.

  The present invention is useful for a pipe lining method in which a pipe lining material is cured by heating it with warm water showering.

It is a sectional side view of the hot water injection nozzle with a buoyancy body according to the present invention. It is the sectional view on the AA line of FIG. It is the B section enlarged sectional detail drawing of FIG. It is a sectional side view of the hot water injection nozzle with a buoyancy body which concerns on another form of this invention. FIG. 5 is an enlarged detail view of a C part in FIG. 4. It is a perspective view of the screw member of the hot water injection nozzle with a buoyancy body which concerns on another form of this invention. It is a perspective view of the buoyancy body of the hot water injection nozzle with a buoyancy body which concerns on another form of this invention. It is sectional drawing which shows the pipe lining construction method concerning this invention. It is sectional drawing which shows the pipe lining construction method concerning this invention. It is sectional drawing which shows the pipe lining construction method concerning this invention. It is sectional drawing which shows the pipe lining construction method concerning this invention. It is sectional drawing which shows the pipe lining construction method concerning this invention. It is the DD sectional view taken on the line of FIG. It is sectional drawing which shows the form accommodated in sealed space in the state which folded the hot water hose. It is sectional drawing which shows the form accommodated in sealed space in the state which folded the hot water hose. It is sectional drawing which shows the conventional pipe lining construction method. It is sectional drawing which shows the problem of the conventional pipe lining construction method.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1,1 'Hot water injection nozzle with a buoyancy body 2,2' Nozzle main body 3,3 'Buoyancy body 4,4' Screw member 4b Hot water injection port 5 Hot water injection tip 5a Hot water injection port 10 Pipe line 12 Reversing nozzle 13 Pipe lining material 14 Guide tube 15 Upper collar 16 Water injection hose 17 Presser bar 24 Hose reel sealed container 25 Hose reel 26 Suction hose 27 Hot water hose 28 Swivel joint 30 Hot water tank 38 Hanger 42 Hot water hose storage tank 43 Hanger

Claims (10)

  A hot water injection nozzle with a buoyancy body, comprising: a cylindrical nozzle body having a plurality of hot water injection holes formed on the outer periphery; and a hollow buoyancy body fixed inside the nozzle body.   The hot water injection nozzle with a buoyancy body according to claim 1, wherein the buoyancy body is fixed inside the nozzle body via a support plate.   The hot water spray nozzle with a buoyancy body according to claim 1 or 2, wherein the buoyancy body is made of metal.   The hot water spray nozzle with a buoyancy body according to any one of claims 1 to 3, wherein a screw member in which the hot water spray port is formed is screwed to an outer periphery of the nozzle body. A pipe lining material made by impregnating an uncured thermosetting resin into a tubular resin absorbent material with a plastic film attached to the outer surface is inverted and inserted into the pipeline by fluid pressure, and the pipe lining material is fluid pressure The pipe lining material is impregnated by heating the pipe lining material by showering the hot water from the hot water hose drawn into the pipe lining material in a state where the pipe lining is expanded and pressed against the inner wall of the pipe line. In the pipe lining method for curing the thermosetting resin
A plurality of hot water injection nozzles with a buoyancy body formed by fixing a hollow buoyancy body inside a cylindrical nozzle body in which a plurality of hot water injection ports are formed on the outer periphery are provided in the middle of the hot water hose. Pipe lining construction method.   One end of the pipe lining material is folded outward, water is poured into the folded portion, the pipe lining material is inverted and inserted into a part of the pipe line by water pressure, and then a part of the pipe lining material is pressed with a presser bar. In the deformed state, air is supplied to the pipe lining material, and the pipe lining material is further inverted and inserted into the pipe line. When the reverse insertion of the pipe lining material proceeds to the middle of the pipe line, the end of the pipe lining material is inserted. The closed portion is closed to form a sealed space inside the pipe lining material, and after storing the hot water hose in the sealed space, compressed air is supplied to the sealed space and the pipe lining material is inverted and inserted by air pressure. 6. The pipe lining method according to claim 5, wherein the hot water hose connected to the reverse end of the pipe lining material is drawn into the pipe lining material.   The pipe lining method according to claim 6, wherein the hot water hose is stored in the sealed space in a folded state.   The pipe lining method according to claim 6, wherein the hot water hose is housed in the sealed space in a state of being wound around a hose reel.   The hose reel is provided with a swivel joint, the inside of the rotating shaft is used as a hot water transport path, one end of a flexible suction hose having a circular cross section is connected to the rotating shaft, and no pressure is applied to the other end of the suction hose. The pipe lining method according to claim 8, wherein the hot water hose having a flat shape is connected.   The pipe lining method according to any one of claims 5 to 9, wherein hot water is stored at a height of 1/3 or more of an inner diameter of the pipe lining material at a bottom portion in the pipe lining material.

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