KR100551199B1 - Reversing apparatus a pipe line repair - Google Patents

Abstract

The present invention relates to a non-drilling inverting device that repairs water and sewage pipes and industrial pipes buried underground without excavation, by inverting the tube into an old pipe and thermally curing the epoxy resin or unsaturated polyester resin of the tube. In the reversing device that welds to the inner circumferential surface of the pipe and repairs the pipe, the structure of the feeding part to which the tube is supplied and the feeding part to invert the tube by the pressure of the compressed air is improved to greatly reduce the volume of the inverting device and prevent the leakage of compressed air. The present invention relates to an inverting device for effectively repairing pipelines.

The present invention is characterized in that the main body having a first chamber and a second chamber of a predetermined size in communication with each other; A supply unit provided with a gate configured to be selectively opened and closed according to a thickness and a width of a tube configured to be supplied to the first chamber of the main body; An injection unit configured in the second chamber of the main body, and the inverted tip of the tube is fixedly inverted; A gate valve installed between the first chamber and the second chamber provided in the main body to open and close; It is characterized by consisting of an air injection pipe and a steam injection pipe mounted to inject compressed air and high temperature steam to the second chamber of the main body.

Pipeline, repair, non-excavation, tube, invert

Description

Reversing apparatus a pipe line repair}

1 is a cross-sectional view of the installation state showing a preferred embodiment of the present invention

Figure 2 is a plan sectional view showing a supply in an embodiment of the present invention

Figure 3 is a perspective view of the main portion showing the supply in an embodiment of the present invention

Figure 4 is a cross-sectional view showing another embodiment of the supply unit in the present invention

5 and 6 are a front view and a cross-sectional view showing the installation state of the input unit in the present invention

Figure 7 is a front view showing another embodiment of the input unit in the present invention

8 and 9 is a coupling state diagram showing a fastening flange of the input unit in the present invention

Figure 10 is a front view showing the operating state of the gate valve in the present invention

11 is a cross-sectional view showing the operating state of the compressed air injection state in the present invention

12 is a cross-sectional view of the operating state showing the injection state of the steam in the present invention

13 is a working view showing a process of inverting the tube in the pipe in the present invention

14 is an operation diagram showing a process of injecting steam into the tube in the present invention

Figure 15 is a front view showing a state in which the tube folded in three parts in the present invention

Figure 16 is a supply state of the tube folded in three parts in the present invention

17 is a front view showing another installation state of the input unit in the present invention

18 is a cross-sectional view showing another installation state of the input unit in the present invention.

{Description of symbols for main parts of the drawing}

1: tube 10: main body 11: first chamber

12. Second chamber 20: Supply part 21: Gate

22: base plate 24: shaft 25: holder

26: elastic spring 30: inlet 31: flange

32: fastening flange 33: fastener 34: turnbuckle

35: screw shaft 40: gate valve 41: screw shaft

42: handle 43: nut 44: link

50: air injection pipe 51: steam injection pipe

The present invention relates to a non-drilling inverting device for repairing the underground water and sewage pipes and industrial pipelines without excavation, and more specifically, by inverting the tubes coated with epoxy resin or unsaturated polyester resin in the aging pipe. In the inverting device for inserting the tube and heat-curing the resin of the tube to be fused to the inner peripheral surface of the conduit to repair the conduit, the structure of the inverting device is improved by improving the structure of the supply section through which the tube is supplied and the inlet section through which the tube is inverted by the pressure of compressed air The present invention relates to a pipeline repair inverter that significantly reduces the volume and effectively suppresses the leakage of compressed air in the supply portion through which the tube is supplied.

In general, in order to repair old water and sewage pipes and industrial pipes (gas, electricity, communication, etc.) that are buried underground, the old pipes are excavated to replace old pipes or partially repaired. However, the ground excavation method, along with damage to the surrounding environment, after the construction is completed, not only the ground subsidence due to soil erosion, but also causes traffic jams in the crowded urban area and causes inconvenience to citizens.

Therefore, in recent years, a non-excavation repair method that can repair a pipeline without digging the ground or road where the pipeline is buried has been developed and implemented to meet the domestic reality.

As a method for repairing the old pipe by the non-excavation method, a hydraulic reversal insertion method, a pneumatic reversal insertion method, a traction insertion method, etc. may be applied in the case of sewerage, and in the case of water supply, a high density polyethylene (High Density Polyethylene) pipe is used. Strain tube traction insertion method is applied.

The non-excavation repairing method is a method of repairing a pipe by inverting a tube coated with a thermosetting epoxy resin or an unsaturated polyester resin on an aged pipe, heat-curing the resin of the tube and fusion to the inner circumferential surface of the pipe. The insertion method inverts and inserts the tube into the pipeline using water pressure, and then it takes a lot of time to generate hot water by injecting hot water into the tube and thermosetting the resin. There is a problem that can not be uniformly matched the temperature of the hot water.

And, the air pressure reversal insertion method is a method of inverting and inserting a tube into a pipeline using air pressure, and then injecting high-temperature steam heat into the tube to thermally harden the resin. The tube is wound around a cylindrical inverter mounted on a vehicle, and then the construction site. Since the preparation time is long, and the volume of the cylindrical inverter is large, it is mounted on a large vehicle, so it is difficult to work on a narrow road or alley.

In addition, the traction insertion method is to pull one end of the tube to invert it into the pipeline, insert the tube, expand the tube, and then inject a high-temperature steam heat to thermally cure the resin. The thermosetting resin flows downward to reduce the thickness of the resin layer. There was a problem in that it could not be obtained uniformly, and also the gap in the bottom layer during construction could not be pushed out of the bottom of the pipeline.

Looking at the reversing apparatus for repairing the pipeline in a non-excavation method by applying the conventional pneumatic reversal insertion method, Korean Registered Utility Model No. 20-0365487 (Pneumatic continuous reversing device for pipeline repair) has been proposed.

When the pre-registered inverting device is schematically described, a plurality of rollers are mounted in the rear portion in a horizontal or vertical direction so that a tube is supplied into the main body, and a lubricant is accommodated in the supply portion and a plurality of upper portions are disposed up and down. It consists of a pneumatic leak prevention unit with an elastic body embedded in the through hole through which the piece and the lower piece are inserted, and a flange-shaped inlet portion which is enlarged in a cylindrical shape in the rectangular main body and is inverted and fixed.

However, the above-mentioned inverting device has a lubricant contained in the air leakage preventing unit and comes into contact with the tube, so that the lubricant is buried on the surface of the tube, causing hygienic problems in the case of the water supply pipe, and also the tube is drawn in to prevent leakage of compressed air. The elastic body is embedded in the through hole and the upper and lower pieces are installed in close contact with the tube. However, the compressed air leaks from both ends of the supplied tube and the frictional resistance between the elastic body and the upper and lower pieces is applied. There was a problem that the supply of the smooth, the overall volume is large, the workability is inconvenient and there was a problem inconvenient to transport.

The present invention has been made in order to solve the problems caused by the conventional reversal device for repairing the existing pipelines, the reversing device by improving the structure of the tube is supplied inverted by the pressure of the supply and compressed air supplied with the tube in the reversing device It is a main object of the present invention to provide an inverting device for repairing pipelines that significantly reduces the volume of the gas and effectively suppresses the leakage of compressed air in the supply portion through which the tube is supplied to the main body.

Features according to an embodiment of the present invention for achieving the desired object as described above;

A main body having a first chamber and a second chamber of a predetermined size communicating with each other; A supply unit provided with a gate configured to be selectively opened and closed according to a thickness and a width of a tube configured to be supplied to the first chamber of the main body; An injection unit configured in the second chamber of the main body, and the inverted tip of the tube is fixedly inverted; A gate valve installed between the first chamber and the second chamber provided in the main body to open and close; It is characterized by consisting of an air injection pipe and a steam injection pipe mounted to inject compressed air and high temperature steam to the second chamber of the main body.

Referring to Figures 1 to 18 shown in the drawings the configuration according to a preferred embodiment of the present invention in more detail as follows.

In the embodiment of the present invention, the main body 10 is preferably configured to have a rectangular shape having a predetermined size, and the first chamber 11 and the second chamber 12 communicate with each other in a predetermined space therein, The main body 10 of this configuration can be installed on the base 13 so that the inclination is adjusted to increase workability.

The structure for adjusting the inclination of the main body 10 is provided with a rotatable hinge portion 13a on one side of the main body 10 and the base 13, and on the opposite side thereof, a cylinder operated by pneumatic or hydraulic pressure ( 13b) to adjust the inclination of the body 10 according to the working conditions.

Meanwhile, in the first chamber 11 and the second chamber 12 provided in the main body 10, a supply unit 20 for supplying the tube 1 and an input unit 30 for inverting and injecting the tube 1 into the conduit. ) Are respectively provided, the supply unit 20 is provided with a gate 21 that is selectively opened and closed according to the thickness and width of the tube (1) supplied to the rear side of the first chamber 11, the input unit 30 The flange 31 is fixed to the front end of the tube 1, the front end of the second chamber 12 is configured.

The supply unit 20 installed at the rear side of the first chamber 11 is a structure for supplying the tube 1 into the main body 10 in a state where the leakage of compressed air is suppressed as much as possible. A rectangular base plate 22 having an area larger than the folded width of the tube 1 at the rear side of the first chamber 11 extends through the inlet hole 23 from the inside of the first chamber 11 to the outside. The gate 21 is disposed on the base plate 22 in the width direction of the tube 1.

In the above, the gate 21 may be made of metal (stainless steel, aluminum) or nonmetal (urethane, plastic) in a semi-circular plate shape having a thickness of 1 to 5 mm, and mounted on the base plate 22 in the width direction. A plurality of pivots are fitted to the shaft 24, and a holder 25 is attached to surround the outer circumferential surface of the upper portion on the semicircular gate 21.

The semi-circular gate 21 is arranged inclined in the inward direction of the first chamber 11 is fitted in close contact with the shaft 24, the base plate 22 with the holder 25 surrounding the outer peripheral surface of the upper portion It is installed longer than the width of the tube (1) from above.

The gate 21 of the supply unit 20 having such a configuration is contacted with the end of the tube 1 at the gate 21 when the upper and lower folded tubes 1 are supplied to the gate 21 on the base plate 22. Only the semicircular gate 21 is opened by pushing inward, and the other gate 21 is kept in close contact with the base plate 22 and the holder 25 at the upper side while being in close contact with each other. It is selectively opened and closed according to the thickness and width of (1) to suppress the compressed air leaked to the outside from the supply unit 20 as much as possible.

In addition, FIG. 4 shows another installation state of the gate 21 in the supply unit 20, and fastening rings 21a and 25a are formed at the upper outer end of the gate 21 and the upper side of the holder 25, respectively. The elastic spring 26 is mounted between the fastening rings 21a and 25a to block unnecessary opening and closing of the gate 21 by the elastic force of the elastic spring 26 while supplying the lower end of the gate 21. As the close contact with the tube (1) is to increase the airtightness of the first chamber 11, the gate 21 is selectively opened and closed according to the thickness and width of the tube (1).

Meanwhile, in the embodiment of the present invention, the inlet 30 for inverting and inserting the tube 1 into the conduit is configured at the front side of the second chamber 12, and the inlet 30 is inverted of the tube 1. The front end portion is provided with a flange 31 and a fastening flange 32 to be inverted.

The flange 31 provided in the inlet 30 is configured on the front side of the second chamber 12 to match the circumferential size of the tube (1), the flange 31 is a shape of a rhombus elongated to the left and right rather than cylindrical It is preferable to install in a rectangular shape, which has a structure that greatly reduces the overall volume of the main body 10 as the flange 31 is configured in a rhombus or a rectangular shape.

Flange 31 of the input unit 30 can be installed in the input unit 30 by varying the size selectively depending on the diameter (300 ~ 1500mm) of the tube 1 according to the diameter of the maintenance work, 5 and 6, a plurality of fastening flanges 32 are installed on the front side of the second chamber 12 in the shape of a rhombus, and the plurality of fastening flanges 32 may be in close contact with inner edges of the flange 31. It is coupled to the flange 31 by a fastener 33 consisting of a and a nut.

Accordingly, the tube 1 supplied into the main body 10 through the supply part 20 of the first chamber 11 is turned inside the fastening flange 32 by flipping the tip end from the inlet part 30 of the second chamber 12. Wrapped outward from the fastening flange 32 is coupled to the flange 31 by the tube 1 is fixed to the inlet 30 is installed.

In the above, a hole is drilled in the end portion of the tube 1 in which the fastener 33 coupling the fastening flange 32 to the inner surface of the flange 31 is fastened to the front end of the tube 1. Make sure that they fit and fit.

7 to 9 show another embodiment of the inlet 30 in the present invention, the flange 31 in the inlet 30 in a rectangular shape to match the circumferential size of the tube (1) And a plurality of fastening flanges 32 connected to the inner surface of the flange 31 by fasteners 33 to fix the tube 1.

In the above embodiment, the fastening flange 32 has a plurality of protrusions 32a and grooves 32b formed at both end portions in order to increase mutual coupling force, and an inner end portion of the groove 32b has a curved surface. The fastening flange 32 arranged in the horizontal state up and down and the protrusion 32a and the groove 32b of the fastening flange 32 arranged in the vertical state on both sides are engaged with each other, and the fastening flanges are disposed on both sides at the time of joining. Tilt inward (32) to fit the projection (32a) in the groove (32b) to engage.

In addition, in the embodiment of the present invention, the gate valve 40 is opened and closed between the first chamber 11 and the second chamber 12 to seal the internal space of the second chamber 12, A diaphragm 45 is formed between the chamber 11 and the inner space of the second chamber 12 to divide the inner space, and the width of the tube 1 is at a height at which the base plate 22 is positioned on the diaphragm 45. The feed hole 40b is formed in a wider space so that the tube 1 is supplied to the second chamber 12, and guide rails 40a are formed at both sides of the feed hole 40b. The gate valve 40 is installed to open and close up and down.

The gate valve 40 is a function of opening and closing the transfer hole 40b by operating vertically along the guide rail 40a in the shape of a square plate. The handle 42 is provided and positioned to be located outside the main body 10. The screw shaft 41 formed on both sides of the screw and the left screw corresponding to each other is rotatably installed on the guide rail 40a in a longitudinal direction, and the nuts 43 are fastened to both sides of the screw shaft 41 while both nuts The link stage 44 is rotatably provided at the upper end of the 43 and the gate valve 40.

Accordingly, as the gate valve 40 rotates the handle 42 at the outside of the main body 10 as shown in FIG. 10, the nut 43 fastened to both sides by the rotation of the screw shaft 41 is inward. Alternatively, the gate valve 40 is vertically operated along the guide rail 40a by the link table 44 to be opened and closed to open and close the transfer hole 40b.

Referring to the operation state and the working process of the pipeline reversing device according to an embodiment of the present invention made as described above are as follows.

First, the old pipeline in the repair section removes obstacles and goes through the cleaning process, and then moves to another section by blocking and pumping water so that water does not flow in the conduit section of the repair section. Work is carried out after placing the stopper (S) in the manhole of the working section after arranging the loading vehicle of the tube, the reversing device, the compressor, the boiler, and the like.

In the operation process, first, as shown in FIG. 11, the gate valve 40 of the main body 10 is opened, and one end of the tube 1 is introduced into the supply part 20 of the main body 10 in the loading vehicle of the tube, and the gate ( 21 is supplied into the main body 10, the tube 1 is supplied to the input unit 30 through the feed hole 40b formed in the diaphragm 45 in the main body 10, and the input unit 30 Inverted at the front end of the tube (1) and fixedly installed between the flange 31 and the fastening flange 32, and then compressed air is injected through the air injection pipe 50 mounted to the second chamber (12).

As the pressure of the compressed air increases in the second chamber 12 and the first chamber 11 of the main body 10, the tube 1, which is folded in the inlet 30, expands and is inverted under the pressure of the compressed air, thereby inverting the conduit. Inserted into the inside, the tube 20 is continuously supplied in a state in which the leakage of compressed air is suppressed as much as possible in the supply unit 20, and binds and binds the rope 1a to the end of the tube 1 to be supplied.

When the tube 1 inserted into the pipe while being inverted by the input unit 30 reaches the stopper S installed in the manhole, which is the end point of the repair section, as shown in FIG. 14, the air injection pipe as shown in FIG. 12. At 50, the compressed air is blocked and at the same time the gate valve 40 is closed to seal the transfer hole 40b of the diaphragm 45, and a high temperature (60 to 80 ° C.) is provided through the boiler and the steam injection pipe 51. Steam is injected into the second chamber 12.

In the above, when steam is injected into the second chamber 12, the exhaust hole 1b is drilled at the end of the tube 1 located in the stopper S inside the manhole and into the tube 1 from the second chamber 12. At the same time to smoothly inject the steam to maintain a uniform temperature of the steam in the tube (1) is heat-cured epoxy resin or unsaturated polyester resin coated on the tube (1) to be fused to the inner peripheral surface of the pipe.

When the epoxy resin or unsaturated polyester resin is hardened in the expanded state in the tube 1 and fused to the inner circumferential surface of the pipe, the steam injection pipe 51 is closed, and unnecessary tubes are cut and removed from both ends of the pipe, and the rope 1a The work is completed by collecting.

This embodiment of the present invention by installing the gate 21 is selectively opened and closed according to the thickness and width of the tube (1) in the supply section 20, the tube 1 is supplied to the main body 10 to prevent the leakage of compressed air By suppressing the loss of compressed air, the pressure is increased, and the flange 31 of the inlet portion 30, in which the inverted tip of the tube 1 is fixed, is formed in a rhombus or rectangular shape to greatly increase the overall volume of the inverting device. Will be reduced.

On the other hand Figure 15 and Figure 16 is another embodiment for supplying the tube 1 to the supply unit 20 in the present invention, the tube (1) is folded in a third in a state folded in the form of "-" and the supply unit ( By supplying through the gate 21 of 20, when the tube 1 is folded into three parts as described above and supplied to the supply unit 20, the size of the gate 21 can be reduced as well as leakage of compressed air. It can be prevented more effectively.

In this way, the tube 1 can be folded into three or more portions and supplied to the supply unit 20, and the tube 1 can be folded into two or more portions at the work site or divided into two portions at the production plant of the tube 1. It can be folded and provided.

In addition, Figure 17 and Figure 18 shows another embodiment of the inlet 30 in the present invention, a circular flange 31 is fixed to the inlet end 30 of the tube 1 is fixed to the inlet 30 Comprising a circular fastening flange 32 corresponding to the flange 31 is installed, the fastening flange 32 is formed with male threads in opposite directions on the inner surface so that a portion is adjacent to the both ends cut and cut The screw shaft 35 is rotatably installed by the hinge 35a, and the screw shaft 35 is installed to be coupled to both sides of the turnbuckle 34, and the auxiliary fastening flange 32c is formed on the cut portion of the fastening flange 32. Is arranged to be fastened to the inner surface of the flange (31).

In this embodiment, as shown in Figure 17 in the state in which the fastening flange 32 is narrowed by the turnbuckle 34, the front end of the tube 1 through the inside of the fastening flange 32, the flange 31 and the fastening flange ( 32), and then turn the turnbuckle (34) to loosen both screw shafts (35), the tightening flange (32) by the screw shaft 35 is in close contact with the inner surface of the flange 31 as the diameter increases, the tube The front end of (1) is firmly fixed, and the auxiliary fastening flange 32c is disposed on the cut-out part of the fastening flange 32 to couple the tube 1 to the flange 31 by the fastener 33. Tightly fixed.

In the above embodiment, the fastening flange 32 is brought into close contact with the inner surface of the flange 31 by the pressing force of the turnbuckle 34 and the screw shaft 35 so as to fix the front end of the tube 1. It can be tightly fixed as a whole, it is possible to increase the fixing force of the tube (1) rather than fixing using a plurality of fasteners 33 only.

The preferred embodiments of the present invention have been described above with reference to the present invention, and are not limited to the above embodiments, and those skilled in the art through the above embodiments do not depart from the gist of the present invention. Can be implemented in a variety of changes.

As described above, according to an embodiment of the present invention, an inverted tube inserted with an epoxy resin or an unsaturated polyester resin is inverted and inserted into an old pipe, and the resin of the tube is thermally cured and fused to the inner circumferential surface of the pipe to repair the pipe. In the device, it is possible to carry out work in a confined space and convenient transportation by improving the structure of the feeding part through which the tube is supplied and the feeding part through which the tube is inverted by the pressure of the compressed air, thereby greatly reducing the overall volume of the inverting device. In addition, since the pressure is increased by effectively suppressing the leakage of compressed air in the supply portion is supplied with the tube is to provide an effect that the operation proceeds smoothly.

Claims (11)

delete delete A main body 10 having a first chamber 11 and a second chamber 12 having a predetermined size communicating with each other; A supply unit 20 having a gate 21 configured to be selectively opened and closed according to a thickness and a width of the tube 1 that is configured and supplied to the first chamber 11 of the main body 10; An inlet 30 configured in the second chamber 12 of the main body 10 and having the inverted tip of the tube 1 fixed and inverted; A gate valve 40 installed between the first chamber 11 and the second chamber 12 provided in the main body 10 to open and close; The second chamber 12 of the main body 10 is composed of an air injection tube 50 and a steam injection tube 51 mounted to inject compressed air and high temperature steam, and the supply unit 20 is a tube (1) A base plate 22 having an area wider than the width of the first plate 11 extends from the inside of the first chamber 11 to the outside, and has a gate 21 on the base plate 22 in the width direction of the tube 1. In the non-excavation inverting device for repair; The gate 21 of the supply unit 20 has a semi-circular plate shape and a plurality of pivots are fitted to the shaft 24 mounted in the width direction on the base plate 22, and the holder 25 surrounds the outer circumferential surface of the upper portion. Non-excavation inverter for repairing the pipeline, characterized in that attached. The method of claim 3; Fastening rings 21a and 25a are respectively formed at the upper outer end of the gate 21 and the upper side of the holder 25, and the elastic springs 26 are mounted between the fastening rings 21a and 25a. Non excavation inverter for pipeline repair. The method of claim 3; Gate 21 is a non-excavation inverter for the maintenance of the pipeline, characterized in that formed in a semi-circular plate shape made of a thickness of 1 ~ 5mm. The method of claim 3; The input part 30 is installed in the shape of a rhombus on the front side of the second chamber 12 so that the flange 31 to which the inverted tip of the tube 1 is fixed is adapted to the circumferential size of the tube 1. Non-excavation inverter for repairing the pipeline, characterized in that the plurality of fastening flanges 32 are coupled to the inner surface of the (31). The method of claim 3; The input unit 30 is characterized in that the flange 31, the inverted tip of the tube 1 is fixed in a rectangular shape in front of the second chamber 12 so as to match the circumferential size of the tube (1) Non excavation inverter for pipeline repair. The method of claim 3; The gate valve 40 is provided with a handle 42, the screw shaft 41 is formed so that the right and left screws correspond to each other rotatably in the longitudinal direction, the nut 43 is fastened to both sides of the screw shaft 41 On the other hand, both sides of the nut 43 and the upper end of the gate valve 40, the linkage 44 is installed, characterized in that the non-excavation inverter for repairing the pipeline. The method of claim 3; The tube (1) is a non-excavation inverter for repairing the pipeline, characterized in that folded in two or more pieces in the state folded in the form of "-" to supply to the supply unit (20). The method of claim 3; The input unit 30 has a circular flange 31 to which the tip of the tube 1 is inverted is fixed in a circular shape, and installs a circular fastening flange 32 corresponding to the flange 31, but with a fastening flange ( 32 is rotatably installed by the hinge (35a) of the screw shaft 35 is formed with a male screw in the opposite direction on the inner side so that a portion is cut and adjacent to both ends cut off, the screw shaft 35 is a turnbuckle (34) A non-excavation inverter for repairing a pipe, characterized in that installed on both sides of the). The method of claim 10; The auxiliary fastening flange (32c) is disposed on the cut portion of the fastening flange 32 is fixed to the inner surface of the flange 31 is not excavated inverted device for repair.

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