KR20110117566A

KR20110117566A - A heating tube for liner

Info

Publication number: KR20110117566A
Application number: KR1020100037106A
Authority: KR
Inventors: 임성주
Original assignee: 임성주
Priority date: 2010-04-21
Filing date: 2010-04-21
Publication date: 2011-10-27

Abstract

The present invention is to cover the planar or linear heating element and the conductor and the planar or linear heating element and the conductor to generate heat by the supply of power to supply a heat source for curing the thermosetting resin, the inner (pipe direction) is covered with a waterproof insulating material and the outer (repair tube) Direction) includes a heating tube that uses a waterproof heat conversion material that converts radiant heat into conduction heat, thereby increasing the temperature of the radiant heat further or transferring the radiant heat into conduction heat. Therefore, the present invention generates heat and radiant heat from the heat generating tube, conducts the heat of conduction to the repair tube, and also adheres the surface of the repair tube to a device such as a coating, film, or special material that conducts heat of radiant conduction, thereby providing excellent heat transfer efficiency. The curing of the repair tube is uniform and rapid, and the heating temperature can be freely controlled, and the short-circuit and breakage of the conductive wire such as wrinkles do not occur, which is convenient for handling and heat transfer during partial cutting. It is easy and economical construction is possible due to the low electricity consumption. In the case of heat-generating fiber, the fabric itself is very strong to prevent bursting by pressure during expansion, and it is faster than the indirect heat method using the hot water and steam heat. It can be cured with high efficiency and compared with tubes with heating elements of heating wire and metal mesh. Unlike conventional one-time heating method that reduces mold time and inserts heating wire, mesh or other heating elements inside the nonwoven fabric, the heating tube can be collected and reused after curing, and can be used semi-permanently and waste of metal resources. Excellent cost savings, no damage to hardened materials after construction, no spillage of metals, less risk of short-circuit and breakage than conventional direct heating method, close to repair tube In this way, the manufacturing process is much faster than the existing method, and the construction has a simple effect of transmitting conduction heat and radiant heat stably during construction.

Description

Heating tube for plumbing repair {A heating tube for liner}

The present invention relates to a heat generating tube for a pipe repairing device that is capable of supplying heat uniformly throughout the thermosetting resin to enable curing throughout the tube, shorten the time required for curing, and facilitate manufacturing and handling.

In general, a pipe is a pipe for transporting drinking water, domestic water, rainwater or domestic sewage, and is a structure that is buried and installed underground.

When such pipes are buried for a long time and cracked, cracks are generated, which causes cracks in the joints connecting the pipes and obstructs the flow of sewage due to sedimentation. The pipe is to excavate the ground to replace the entire pipe, this replacement of the pipe is expensive and time-consuming, so the method of repairing the pipe instead of the replacement of the pipe by excavation is mainly developed and used.

Conventional pipe repair methods include a pipe heat repair method using steam heat or hot water heat method. In this method, a tube impregnated with a thermosetting resin is disposed inside a pipe to be repaired, and then hot steam or hot water is blown into the tube. Put the tube in close contact with the inner wall of the sewer pipe and at the same time harden the tube.

However, the steam heating or hot water heating method, which is a conventional plumbing repair method, requires continuous injection of hot steam or hot water into the tube for a predetermined time in order to cure the tube, thereby generating boilers, generators, and compressors. Device is required, and the steam supplied to the inside of the tube is easily cooled, so that the heat loss is large, and noise is generated in the process of supplying steam, and between the steam supply side and the side from which the steam is discharged As the temperature difference occurs, there is a problem that the curing unevenness of the tube and the increase of the curing time are increased. In addition, the heat generated by the cooling of the steam is blocked, the heat hardening occurs often occurs. In addition, the hot water heat method has the disadvantage of using a lot of fossil fuel and the problem of killing the microorganisms of the ecosystem, because not only there is a difference in temperature, but also a large amount of hot water to continue to flow.

In order to solve this problem, my company has presented a tube in which the heating wire and the heating element are provided in the “tube of piping repair apparatus” of Korean Patent Registration No. 0719439 to cure the thermosetting resin. .

The tube of the conventional pipe repair apparatus includes a nonwoven fabric impregnated with a thermosetting resin, and a heating element which is installed on the nonwoven fabric and which is heated in contact with the heating wire to cure the thermosetting resin by receiving heat. It is a metal wire or chip that is installed in a cross shape.

The heating tube for repairing the pipe according to the present invention is installed separately from the inner surface of the repair tube installed on the inner side of the pipe, and finishes with a coating material that transmits the conductive heat and radiant heat as it is or converts the radiant heat into conductive heat in the pipe direction. (Tube center direction) is finished with a heat insulating material to block the external outflow of heat, and includes a heating element and a conductor that generates conductive heat and radiant heat by supplying power to cure the thermosetting resin.

According to the present invention, the repair tube and the heating tube are separated, unlike the conventional direct heating type repair tube, which is simple to manufacture as a conventional repair tube, and variously processes and forms a heating tube that supplies heat to the repair tube. It is capable of forming, conducting heat from the heating tube to the repair tube, and converting the radiant heat generated together with the conduction heat directly to conduction heat like an electric kettle by using a special heat conversion material, so that the heat transfer efficiency is excellent and the entire curing tube of the repair tube is excellent. It is made evenly and quickly, and it can be made to get cold immediately when the power is cut off depending on the material of the heating tube, so there is no risk of ignition on the contact surface, so it is safe from fire hazard and the heating temperature can be freely adjusted. As a result, short circuits or breakage of the conductive wires, etc. may not occur due to wrinkles. Not only is it easy to handle, it is also easy to transfer heat even when cutting parts, and it is economical to use due to low electricity consumption, and the tube is inflated by the unheated cool water, which is impossible in the existing method due to the waterproof insulation material, and the fluid supply is continued. It is very economical because there is no need for constant water supply through air or steam through boiler, hot water boiler, and in case of heating tube, the fabric itself acts as a high tension jacket to prevent bursting due to pressure during expansion. It is possible to reduce the number of production process compared to the tube with the heating element of the heating wire and the metal mesh, which is convenient to manufacture and install, and to increase the temperature of the tube which is impossible with the radiant heat of the patented method. Have. In addition, compared to the conventional method in which the heating element is inserted without directly inserting the heating element into the tube, the advantage of having a superior effect of transferring the same heat to all sections of the tube at the same time, rather than heating the heating wire to the mesh. As a result, the production time of the product can be shortened and the cost can be lowered. Also, the semi-permanent use of the heating element reduces the waste of resources and the heating element does not remain in the pipe after construction.

1 is a cross-sectional view showing a piping repair apparatus according to the present invention,
2A to 2C are cross-sectional views illustrating a repair tube and a heating tube according to a first embodiment of a pipe repair apparatus according to the present invention;
3a to 3c are views showing each layer of the repair tube and the heating tube according to the first embodiment of the pipe repair apparatus according to the present invention,
4 is a plan view showing a heat generating fiber of the heat generating tube according to the first embodiment of the pipe repair apparatus according to the present invention,
FIG. 5 is a view showing each layer of the repair tube and the heating tube according to the second embodiment of the pipe repair apparatus according to the present invention; FIG.
FIG. 6 is a view showing each layer of the repair tube and the heating tube according to the third embodiment of the pipe repair apparatus according to the present invention; FIG.
FIG. 7 is a view illustrating each layer of the repair tube and the heating tube according to the fourth embodiment of the pipe repair apparatus according to the present invention;
8 is a flowchart illustrating a pipe repairing method according to the present invention;
9A to 9C are views for sequentially explaining a pipe repairing method according to the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. In addition, in describing the present invention, when it is determined that the detailed description of the related well-known configuration or function may obscure the gist of the present invention, the detailed description thereof will be omitted.

Example

In order to help the understanding of the use of the heating tube in the present embodiment, it will be described as a whole to the plumbing repair device in which the heating tube is used.

1 is a cross-sectional view showing a heat generating tube according to the present invention, and a piping repair apparatus using the heat generating tube of the present invention. As shown, the pipe repair apparatus according to the present invention, the repair tube (100, 200, 300, 400) and the repair tube (100, 200, 300, 400) installed on the inner side of the pipe 1 to be repaired Waterproof heat conversion material (140, 240, 340, 440), planar or linear heating element and conductor (150, 250, 350, 450), planar or linear heating element and conductor (150, 250, 350, 450) installed on the inner side of the Heating tube (180, 280, 380, 480), maintenance tube (100, 200, 300, 400) and heating tube (180) integrated with the waterproof insulation (160, 260, 360, 460) installed on the inner side of the Supply fluids to the airtight covers 510 and 520 installed at both ends of the 280, 380, 380, and 480, the repair tubes 100, 200, 300, and 400, and the heating tubes 180, 280, 380, and 480. It includes a fluid supply (600).

The repair tubes 100, 200, 300, and 400 are nonwoven tubes impregnated with a thermosetting resin, and waterproof heat conversion materials 140, 240, 340, which harden the thermosetting resin by generating heat by power supply inside the nonwoven tube. 440), a waterproof or heat insulating material (160, 260, 360, 460) installed on the inner surface of the planar or linear heating element and the conductor (150, 250, 350, 440), the planar or linear heating element and the conductor (150, 250, 350, 450) The heating tubes 180, 280, 380, and 480 integrated with each other are installed.

Embodiments for the repair tubes 100, 200, 300, and 400 will be described with reference to the drawings.

2A to 2C are cross-sectional views illustrating a repair tube and a heating tube according to a first embodiment of the present invention, and FIGS. 3A to 3C illustrate respective layers of the repair tube and a heating tube according to a first embodiment of the present invention. Exposed figure. As shown, the repair tube 100 according to the first embodiment of the present invention is composed of a nonwoven fabric, a coated nonwoven fabric, a reinforcing material, and the like.

In addition, the inner surface of the waterproof heat conversion material (140, 240, 340, 440), the planar or linear heating element and the conductor (150, 250, 350, 450), the planar or linear heating element and the conductor (150, 250, 350, 450) The heating tube (180, 280, 380, 480) integrated with the waterproof insulation (160, 260, 360, 460) to be installed is separately inserted into the repair tube 100 separately from the repair tube 100 and after construction Can be collected and reused.

On the other hand, the pipe to be repaired by the pipe repair apparatus according to the present invention can be used not only for sewer pipes buried underground but also water supply pipes.

The repair tube 100 is impregnated with a thermosetting resin, made of a tubular shape, and a heating tube 180 is provided on an inner side thereof.

The heating tube 180 generates heat by external power supply and supplies heat to the thermosetting resin of the repair tube 100 to expand the repair tube 100 and the heating tube 180 to the inner surface of the pipe 1. Allow the thermosetting resin to cure in a tight state.

Planar or linear heating element and the conductor 150 is a fiber made of a conductive, heat generating, conductive material in this embodiment, for example, as shown in Figure 4, made of conductive, heat generating, conductive material or conductive, heat generated It is made of a special fabric yarn (10) and the plywood (11) coated with a sex, conductive material in the form of a suitably fabric, made of a chemical material, made of a liquid or a composite of the conductive, pyrogenic, conductive material It is manufactured in the state of waterproofing, insulation and radiant heat is converted into conduction heat, and radiant heat and conduction heat are transmitted only to the maintenance tube direction, and heat is released more hotly toward the maintenance tube due to the opposite insulation treatment. You can get it.

As shown in FIG. 4, the planar or linear heating element and the conductor 150 made of conductive, heat generating, and conductive fibers are provided with conductive lines 121 side by side on both sides, and each conductive line 121 is formed. The socket 122 is connected to the external power supply.

Meanwhile, the repair tube 100 may be provided with a nonwoven tube 110, a high tension tube 120, and a film 130 having a high tension in order to withstand the air pressure for expansion.

The high tension tube 120 forms a double tube together with the nonwoven tube 110 and may be sewn and fixed to the nonwoven tube 110. In addition, the film 130 is fixed to the inside of the high tension tube 120 by the attachment or other method in order to smooth the flow of the fluid moving through the pipe (1).

5 is a view showing each layer of the repair tube according to the second embodiment of the present invention exposed. As shown, the repair tube 200 according to the second embodiment of the present invention, as in the first embodiment, the repair tube 200 is a non-woven tube 210, high-tensileity tube 220 and film 230; 1), and the configuration except for the planar or linear heating element and the conductor 250 is the same as that of the first embodiment, and thus description thereof will be omitted.

The planar or linear heating element and the conductor 250 are films made of conductive, heat generating and conductive materials in the present embodiment, and are laminated by applying conductive, heat generating and conductive materials to a synthetic resin or paper of a thin film.

The heating tube 280 in which the planar or linear heating element and the conductor 250 of the film are inserted is installed to be installed to face the inner side of the repair tube 200, wherein the planar or linear heating element and the conductor 250 are the first embodiment. Like the waterproof insulation 260 finish and the heat generating tube 280 is a finish 240 for converting radiant heat into conductive heat, and only the manufacturing method of the basic heating element is different.

In addition, the planar or linear heating element and the conductor 250 of the heat generating film are provided such that the conductive lines 221 are arranged side by side along the longitudinal direction of the planar or linear heating element and the conductor 250, and each of the conductive lines 221 is provided. A socket 222 is provided for connecting with an external power supply.

6 is a view showing each layer of the repair tube according to the third embodiment of the present invention. As shown in the drawing, the repair tube 300 and the heat generating tube 380 including a planar or linear heating element and a conductor 350 which are installed to face the inner side of the repair tube 300 are repaired as in the first embodiment. The tube 300 may be provided with a nonwoven tube 310, a high tension tube 320, and a film 330 (shown in FIG. 1), and the first embodiment may be implemented for configurations other than the planar or linear heating element and the conductor 350. Since it is the same as the example, the description thereof will be omitted.

The planar or linear heating element and the conductor 350 are paint coating layers formed by coating a conductive, pyrogenic, conductive material, which is an organic polymer compound of the material in this embodiment. In this case, the paint may be directly applied to the planar or linear heating element and the conductor 350 to form a coating coating layer. Preferably, the conductive line 321 for supplying power to the outer circumferential surface of the planar or linear heating element and the conductor 350. A coating, film or special material for forming a coating layer by spraying paint onto the surface or line heating element and the conductor 350 to which the conductive wire 321 is attached, and converting the waterproof insulation 360 and radiant heat into conductive heat. Finished with a 340 is composed of one heating tube 380, a socket 322 for connecting to an external power supply to the conductive wire 321 is installed.

7 is a view showing each layer of the maintenance repair tube according to the fourth embodiment of the present invention exposed. As shown in the drawing, the maintenance tube 400 and the heat generating tube 480 including the planar or linear heating element and the conductor 450 which are installed to face the inner side of the maintenance tube 400 are repaired. The tube 400 may be provided with a nonwoven fabric tube 410, a high tension tube 420, and a film 430 (shown in FIG. 1), and may have a first structure for configurations other than the planar or linear heating element and the conductor 450. Since it is the same as the embodiment, the description thereof will be omitted.

In the present embodiment, the planar or linear heating element and the conductor 450 are constituted of a heating tube 480 which is coated with a planar or linear heating element such as a fiber and the conductor 450 and is waterproof and wetted with a conductive, pyrogenic and conductive liquid. A conductive wire 421 is attached to the outside of the heat generating tube to supply a completely waterproof power supply, and a socket 422 is installed on the conductive wire 421 to be connected to an external power supply.

In addition, although not shown, the chemicals (eg, conductive rubber and conductive plastic) included in the claims or the above-described materials may be used in combination, and all the conductive and exothermic materials available may be used. ,

,

The airtight covers 510 and 520 are installed at both ends of the repair tubes 100, 200, 300 and 400 and the heating tubes 180, 280, 380 and 480 so that the repair tubes 100, 200, 300 and 400 and the heating tubes The maintenance tube (100, 200, 300, 400) and the heating tube (180, 280, 380, 480) is sealed so that the (180, 280, 380, 480) is expanded by the supply of a fluid such as air or water, one side Injecting ports 511 and 521 for measuring the temperature and pressure of the fluid supply or repair tubes 100, 200, 300, and 400 and the heating tubes 180, 280, 380, and 480 are provided.

The sealing covers 510 and 520 are provided at both ends of the repair tubes 100, 200, 300 and 400 and the heating tubes 180, 280, 380 and 480, and the heating tubes 100, 200, 300 and 400 and the heating tubes. (180, 280, 380, 480) is inserted into both ends and tightened by a wire fastener to the outer surface of both ends of the maintenance tube (100, 200, 300, 400) and the heating tube (180, 280, 380, 480) It adheres to maintain confidentiality.

The fluid supply 600 heats the maintenance tubes 100, 200, 300, and 400 through the inlets 511 and 521 of the sealing covers 510 and 520 connected to the connection pipe 610 by pumping fluid, for example, air. Air is supplied into the tubes 180, 280, 380, and 480.

In the case of this curing method, since the heated and insulated heating tube is located inside the pipe, cold water can be injected without using a fluid supply. Therefore, compared to the pneumatic method using the conventional fluid supply or the hot water heating method using hot water. The use of oil can also be significantly reduced.

The operation of the pipe repairing apparatus according to the present invention having such a configuration will be described below with reference to the pipe repairing method according to the present invention.

8 is a flowchart illustrating a pipe repair method according to the present invention. As shown, the pipe repair method according to the present invention comprises the steps of installing a repair tube and a heating tube inside the pipe (S100), supplying a fluid to the repair tube and the heating tube (S200), and power to the heating tube Supplying step (S300), the step of curing the thermosetting resin (S400), and recovering to reuse the heating tube after curing (S500).

Step (S100) of installing the repair tube inside the pipe, as shown in Figure 9a, the repair tube (100, 200, 300, 400) and the heating tube (180, 280) in which the thermosetting resin is impregnated inside the pipe (1) , 380 and 480 are installed, and accordingly, the repair tube 100, 200, 300, 400 and the heating tube 180, 280, 380, 480 are arranged along the length direction of the pipe 1 to be repaired. Will be installed.

Supplying fluid to the maintenance tube (S200), as shown in Figure 9b, the both ends of the maintenance tube (100, 200, 300, 400) and the heating tube (180, 280, 380, 480) is sealed cover (510) By the operation of the fluid supply 600 to seal the water supply tube 600, the heating tube (180, 280, 380, 480) as shown in 9c, the piping (1) This step is to be in close contact with the inner surface. On the other hand, in order to supply the fluid into the heating tube (180, 280, 380, 480) is transferred from the fluid supplier 600 through the connection pipe 610 to the inlet 511 of any one of the sealing cover (510, 520) Supplying a fluid such as air or water, which causes the expansion tube (180, 280, 380, 480) to expand the maintenance tube (100 210, 300, 400) abuts on the outside of the heating tube piping (1) To be in close contact with the inner surface of the.

Supplying power to the heating tube (S300) is a step of applying heat to the heating tube (180, 280, 380, 480) to generate heat to the heating tube (180, 280, 380, 480), the repair tube When the (100, 200, 300, 400) and the heating tube (180, 280, 380, 480) is in close contact with the inner surface of the pipe (1), the conductive lines 121, 221 of the heating tube (180, 280, 380, 480) By connecting the sockets 122, 222, 322, and 422 provided to the power generators 321 and 421 to the external generator 700 so that the heat-producing heating tubes 180, 280, 380, and 480 are heated by electrical resistance. The heat generated from the heat generating tubes 180, 280, 380, and 480 is supplied to the thermosetting resin of the repair tubes 100, 200, 300, and 400.

Curing the thermosetting resin (S400) is a step of curing the thermosetting resin of the repair tube (100, 200, 300, 400) by the heat of the heating tube (180, 280, 380, 480). The curing of the thermosetting resin is performed by supplying heat uniformly and quickly over the entire area of the repair tubes 100, 200, 300, and 400 by the exothermic tubes 180, 280, 380, and 480, which dissipate heat over the entire area. Not only does not allow the curing of the thermosetting resin over the entire portion, but also shortens the time required for curing.

Collecting the heating tube (S500) is a step for collecting to reuse the heating tube (180, 280, 380, 480) after all the curing work is finished. Unlike the conventional method, since the heating element is separated from the repair tube, the heating tube can be used semi-permanently while reducing waste of resources and costs.

On the other hand, the connection unit 620 is connected to the maintenance tube (100, 200, 300, 400) by the connection unit 620 by the connection unit 620 through the connection pipe 610 from the sealing cover (510, 520). And pressure and temperature inside the 280, 380, 480, and by adjusting the pressure of the air or water supplied to the heating tube (180, 280, 380, 480) in close contact with the maintenance tube through the measured pressure and temperature Repair tube (100, 200, 300, 400) and the heating tube (180, 280, 380, 480) in close contact with the inner surface of the pipe (1) as well as the temperature of the heating tube (180, 280, 380, 480) By adjusting the appropriately adjust the degree of curing of the thermosetting resin.

According to the most preferred embodiments of the present invention, the heating element used to cure the thermosetting resin compared to the conventional method using the heating wire can be processed and molded in a variety of forms, unlike the existing heating wire is applied directly to the tube The use of far-infrared radiation and conduction heat, which is as efficient as direct heat without inserting, not only provides excellent heat transfer efficiency to the thermosetting resin, but also cure efficiency of the repair tube as a whole.

In addition, as compared with the conventional heat transfer method through the heat transfer method, not only is it possible to supply heat uniformly over the entire area of the thermosetting resin due to the heating of the conductive, pyrogenic, conductive fiber, film, coating layer or liquid over the entire surface of the thermosetting resin. It is possible to reduce the time to reach the temperature required for curing, to freely control the exothermic temperature, and economical construction is possible due to the low electricity consumption.

And, in the case of the heating element of the existing heating wire and the metal mesh, there is a possibility of short-circuit or cut due to weak wrinkles or folds, etc. It is easy to manufacture and handle because there is no defect, easy to transfer heat even when cutting part, and improve the accuracy of construction.

In addition, the heating tube acts as a high-tension jacket to prevent bursting when the tube is inflated to enable stable construction, and it is possible to prevent waste of resources and to construct economically by reusing rather than one-time. It is eco-friendly because no metal is leaked due to the problem of the pipe.

In addition, in the case of using the heating element of the existing heating wire and the metal mesh, the tube production process is a little more inconvenient, but in the case of the heating tube, it is possible to continuously use it, so the construction is convenient because only the general repair tube is produced. In the manufacturing process of the heating wire and the metal mesh heating element inserting tube, a mechanical device and a process of overlapping the heating element of the heating wire and the metal mesh heating element and bonding them to the tube were required.However, if the heating tube is used, Likewise, non-woven fabrics can be manufactured so that only thermosetting resins can be soaked, and thus, a repair tube is very easy because no separate process is required.

In addition, carbon radiant heat of the patent-pending method is difficult to harden using heat since the efficiency of the resin is not high in the manufacturing mode of the patent-published form, so that the temperature of the resin cannot be raised to a temperature at which the actual construction is possible.

In addition, conventional methods require continuous consumption of thermal boilers by expanding tubes through steam heat using steam or hot water heat using hot water for heat transfer. This method, which uses heat tube, is waterproof and heat-treated, so it is suitable for low carbon green growth because it does not need additional oil if the water is kept well under pressure after inflating water. Can be.

In addition, while the preferred embodiments of the present invention have been shown and described, the present invention is not limited to the above-described specific embodiments, and the present invention belongs to the present invention without departing from the gist of the present invention as claimed in the claims. Of course, various modifications can be made by those skilled in the art, and these modifications should not be individually understood from the technical spirit or the prospect of the present invention.

10: fiber yarn
11: joint venture
100, 200, 300, 400: repair tube
110, 210, 310, 410: nonwoven tube
120, 220, 320, 420: high tension tubes
121, 221, 321, 421: conductive line
122, 222, 322, 422: sockets
130, 230, 330, 430: film
140, 240, 340, 440: waterproof heat conversion material
150, 250, 350, 450: planar or linear heating elements and conductors
160, 260, 360, 460: waterproof insulation
180, 280, 380, 480: heating tube
510, 520: airtight cover
511,521: inlet
600: fluid supply
610: connector
620: connection unit
700: generator

Claims

In the tube provided on the inner side of the pipe for repairing the pipe,
Separately provided inside the repair tube to cure the repair tube impregnated with the thermosetting resin,
A heating element in close contact with the repair tube and generating heat by supply of power to cure the repair tube impregnated with the thermosetting resin.

The method of claim 1,

The heating tube,

The inner side of the repair tube is separated from the repair tube independently and is separately located and can be collected and reused after completion of construction. The inner (pipe direction) is finished with a waterproof insulation material and the outer (repair tube direction) conducts heat from the heating element as it is. The radiant heat is transferred as it is, or converted into conductive heat and finished with a coating, film or special material that can transmit radiant and conductive heat at the same time and is waterproofed. The heating part in the center of the heating tube is planar or linear heating element and planar or linear conductor Heating tube for repairing the plumbing further comprising a.

3. The method according to claim 1 or 2,

The heating tube,

Consists of a planar or linear heating element and a planar or linear conductor, conductive materials, pyrogenic materials, all fibers made of conductive materials, films, coating layers, fibers made of metals, chemicals, liquids, films, coating layers, It is composed of metals, chemicals, liquids or fibers, films, paints, metals, chemicals and liquids, and it is a material that is not waterproof or damaged so that the coating layer dissolves in moisture and does not lose its function even when mixed with other materials such as resins. Heating tube for repairing the piping, characterized in that any one of the products coated with