KR20080095458A - Hollow ring, connecting pipe having the same, and connecting method using the same - Google Patents

Abstract

A hollow ring, a connection pipe including the same, and a pipe connection method using the same are provided to freely connect pipes without the deformation of the connection pipe and to keep watertightness and airtightness between the connection pipe and the pipes. A connection pipe(600) for connecting pipes comprises free ends(611,631) in which the pipes are inserted in the axial direction; a stop projection which limits the axial movement of the pipes; at least one receiving groove(612) formed on two sides of the stop projection along the inner circumference; a hollow ring(620) which includes a cavity(626) in which the medium injection and expansion are possible and an exterior wall forming hollow and having one or more wrinkles(625a); and an inlet port(622) which is penetrated into the exterior wall in order to inject the medium into the cavity.

Description

Hollow ring capable of injecting and expanding a medium, a connecting pipe having the same, and a pipe connecting method using the same {HOLLOW RING, CONNECTING PIPE HAVING THE SAME, AND CONNECTING METHOD USING THE SAME}

1A and 1B are exploded perspective views illustrating pipes connected by connecting pipes according to a conventional embodiment, respectively;

Figure 2a to 2f is a longitudinal cross-sectional view for explaining the configuration of the pipe connected by the connection pipe having a hollow ring capable of injecting and expanding the medium according to one embodiment and modified embodiment of the present invention, respectively;

Figure 3 is a schematic cross-sectional view for explaining how the male and female connecting bodies of the connector according to a modified embodiment of the present invention are fastened to each other,

4a and 4b is a schematic cross-sectional view for explaining the configuration for fastening the pipe by a connector having a hollow ring capable of injecting and expanding the medium in accordance with an embodiment of the present invention,

Figure 5 is a cross-sectional view for explaining the configuration of the pipe connected to each branch by a connecting pipe having a hollow ring capable of injecting and expanding the medium according to another embodiment of the present invention.

The present invention relates to a hollow ring capable of injecting and expanding a medium, a connecting pipe having the same, and a connecting method of the pipe using the same. More specifically, the pipe can be freely moved in the axial direction of the hollow body of the connecting pipe, and the expansion of the hollow ring by injecting, expanding and sealing the medium into the expandable hollow ring provided in the connecting pipe. The present invention relates to a hollow ring capable of injecting and expanding a medium that can be watertightly or hermetically sealed between the connecting pipe and the pipe by pressure, a connecting pipe having the same, and a pipe connecting method using the same.

In general, the pipes used to transfer fluids (gas, liquid) are widely used as industrial pipes such as water and sewage pipes or gas pipes, and most of these pipes are made of metal, synthetic resin, and concrete. The construction is interconnected.

In particular, the water and sewage pipes made of the synthetic resin is produced in a predetermined length of a standard size, for example, when the distance between the manhole in the sewer reaches 60 meters, 10 pipes of 6 meters are continuously coupled to prevent leakage at the connection site. By construction.

As a method of connecting the conventional synthetic resin pipe, as shown in FIG. 1A, a method of inserting and fastening the respective pipes 1 and 1 ′ into the left and right sides of the connection pipe 10 is used, or A method of fixing the connection pipe 30 to one end or expanding the one end to form an arm member and inserting another pipe 1 is used.

However, in the conventional method of connecting the synthetic resin pipe, the rubber packing 20 must be mounted at the tip of each pipe 1, 1 ', so that the pipes 1, 1' are forced into the connection pipe 10, 30. Since it has to move along the axial direction, the connection work is cumbersome and time-consuming. In addition, the free end of the connection pipe is heated so that the pipe can be easily inserted into the connection pipe (10, 30) was configured to taper so that the diameter of the connection pipe (10, 30) is reduced toward the inside. Therefore, the connection pipe (10, 30) has a problem that can not maintain a rigid fastening between the connection pipe and the pipe because the rigidity can be weakened or deformed by heat.

In addition, when the rubber packing is coupled to the connecting pipes 10 and 30 in a state where the rubber packing is mounted at the front end of the pipe 1 and 1 ', not only a lot of force is applied, but also the rubber packing is damaged so that fluid leaks. There was a problem that the possibility of becoming increased.

In addition, when connecting a branch pipe at a right angle or a square with a main pipe like a water supply and sewage pipe, when the plurality of pipes are connected or when a plurality of branch pipes are not aligned in line, the main pipe and the branch pipe only by the rubber packing. It could not be airtight or watertight sealed between or between the branch pipes. Therefore, there is a problem in that the T-shaped connector is manufactured separately and expensive at the time of connecting the branch hole such as the manhole and the water and sewage connection part.

The present invention has been made in order to solve the above-described problems, an object of the present invention is to freely fasten the pipe to the connecting pipe without deforming the connecting pipe, not easily detached after the fastening, between the connecting pipe and the pipe To provide a connection pipe having a hollow ring capable of injecting and expanding a medium in which watertight and hermetic sealing can be maintained, and a method of connecting a pipe using the same.

Another object of the present invention is to provide a connecting pipe and a method of connecting a pipe using the same that can be hermetically or watertightly sealed between pipes even if a plurality of pipes are not aligned in a line.

It is still another object of the present invention to provide a hollow ring capable of injecting and expanding a medium so as to be hermetically or watertightly sealed between a pipe and a connecting pipe.

Still another object of the present invention is to provide a hollow ring capable of injecting and expanding a medium which can prevent deformation of a connecting pipe connecting a pipe.

Still another object of the present invention is to connect the pipes using a connection pipe can be easily and quickly carried out, and the connection method of the pipes using the connection pipe can be maintained firmly coupled between the pipe and the connection pipe. To provide.

Hereinafter, with reference to the accompanying drawings, a preferred embodiment of the present invention will be described in detail.

2A to 2F are longitudinal cross-sectional views for explaining the configuration of pipes connected by connecting pipes according to one embodiment of the present invention and modified embodiments thereof, respectively.

Referring to FIG. 2A, a connecting pipe 100 according to an embodiment of the present invention is used to connect at least two pipes 1 and 1 ′. The connecting pipe 100 is made of a substantially hollow hollow body 101 using a good thermoplastic resin. The hollow body 101 of the connecting pipe 100 usually has an inner diameter larger than the outer diameter of the pipes 1 and 1 'and has a length of about 30 cm to 40 cm. Therefore, since the connection pipe 100 is light and has a length that is easy to work, the pipes 1 and 1 'can be easily coupled to several tens of meters without using a separate member.

The hollow body 101 of the connecting pipe 100 has a stop protrusion 150 protruding along its inner circumference at its central portion 110. In addition, the hollow body 101 has a free end 130 is inserted into the pipe (1, 1 '), the free end 130 is formed along the inner circumference and the hollow medium that can be injected and expanded At least one receiving groove 140 for receiving the mold ring 120 is included.

 The stop protrusion 150 preferably extends in the inner diameter direction of the pipes 1 and 1 'inserted into the connection pipe 100 so as to have an axial direction in the connection pipe 100 of the pipes 1 and 1'. Can act as a stopper to limit movement. Therefore, there is no need to make an effort for a separate alignment for fixing the position of the pipe (1, 1 ') in the connection pipe (100).

In this embodiment, the hollow ring 120 accommodated in the at least one receiving groove 140 after the pipe (1, 1 ') is freely inserted through the free end 130 of the connecting pipe (100). As a medium such as air or liquid is injected and expanded and sealed in the hollow part of the c), a firm coupling is formed between the connecting pipe 100 and the pipe 1 by the expansion pressure.

In general, the hollow ring 120 is made of synthetic resin of rubber, silicone or elastic material, which will be described in detail later with reference to FIGS. 4A and 4B.

The free end 130 is horizontally illustrated so that the inner diameter of the hollow body 101 is substantially constant, but in some cases, the free end 130 may be formed to be inversely tapered so that the inner diameter thereof increases toward the inside of the hollow body 101. It may be.

Referring to Figure 2b, the connection pipe 200 according to a modified embodiment of the present invention, the hollow body 201 is integrally or separately member by the heat-melting resin or rotational friction at one end of the pipe (2) It includes a fixed end 210 is fixed by the free end 230, the other pipe 2 'is freely inserted. The free end 230 has at least one receiving grooves 241 and 242 along its inner circumference, and the receiving grooves 241 and 242 have a hollow ring 220 which is capable of injecting and expanding a medium. . As such, a plurality of hollow rings 220 may be disposed along the longitudinal direction of the connection pipe 200 to increase the coupling force between the connection pipe 200 and the pipe 2. The free end 230 is horizontally illustrated such that the inner diameter of the hollow body 101 is substantially constant, but in some cases, the free end 230 may be formed to be inversely tapered so that the inner diameter thereof increases toward the inside of the hollow body 101. It may be.

Referring to FIG. 2C, the connecting pipe 300 according to a modified embodiment of the present invention may include a pipe 3 and 3 ′ formed with at least one groove along an outer circumference thereof, for example, the pipe 3 and 3 ′. It is used to connect corrugated pipes with irregularities formed on the outer surface. The connecting pipe 300 is formed so that the hollow body 301 made of a synthetic resin cylindrical having a stopper protrusion 350 protruding along its inner circumference at its central portion. In the present embodiment, a hollow ring 320 capable of injecting and expanding a medium is disposed in at least one accommodating groove 3a formed along the outer circumference of the pipes 3 and 3 '. As the medium is sealed after injection and expansion, the connecting pipe 300 and the pipes 3 and 3 'are hermetically or watertightly coupled by the expansion pressure. However, the present invention is not limited thereto, and an accommodation groove may be formed at the free end 330 of the hollow body 301. At this time, the free end portion 330 is horizontally shown so that the inner diameter of the hollow body 301 is substantially constant, but in some cases, the taper is reverse tapered so that the inner diameter increases toward the inside of the hollow body 101. It may be formed.

Referring to FIG. 2D, the connector 400 according to the modified embodiment of the present invention includes a female connector 410 and a male connector 430 accommodated in the female connector 410.

The female connecting pipe 410 is fixed to the end of the pipe 4, the end 415 is fixed by rotational friction or hot melt resin or a separate fixing means, the other end forms a free end 411. The male connecting pipe 430 has a fixed end 435 is fixed to the other pipe (4 ') facing the pipe 4, the other end forms a free end 431.

The free end 411 is formed stepped in the diameter increasing direction from the fixed end 415. The free end 411 includes a fastening groove 414 between the fixed end 415 and a fastening protrusion 413 disposed adjacent to the fastening groove 414 in the axial direction.

On the other hand, the free end 431 is disposed opposite the free end 411 from the fixed end 435 toward the fixed end 415 of the female connector body 410. In addition, the free end 431 of the male connecting pipe 430 moving in the axial direction along the free end 411 of the female connecting pipe 410 is at least along the inner circumference adjacent to the fixed end 435 One or more receiving grooves 432 are provided. The receiving groove 432 has a hollow ring 420 that is capable of injecting and expanding the medium.

In addition, the free end 431 of the male connector 430 is provided with a fastening protrusion 433 and a fastening groove 434 at the end.

The fastening protrusion 433 is inserted into the fastening groove 414 of the female connecting pipe 410, and the fastening protrusion 434 is arranged to be inserted into the fastening protrusion 413 of the female connecting pipe 410. do.

That is, a fastening groove 414 is formed in the free end 411 of the female connecting pipe 410 in the axial direction from the fixed end 415 and is adjacent to the fastening groove 414 in the axial direction. The fastening protrusions 413 are spaced apart at predetermined intervals along the main part. The fastening protrusions 433 formed at predetermined intervals along the outer circumference at the end of the free end 431 of the male connecting pipe 430 may pass through the predetermined interval in the axial direction when rotated at a predetermined angle.

The free end 431 of the male connector 430 may further include a fastening groove 434 adjacent to the fastening protrusion 433 in the axial direction. The fastening groove 434 may receive the fastening protrusion 413 of the male connecting pipe 430 when the male connecting pipe 430 is rotated at a predetermined angle. At this time, the predetermined interval is preferably somewhat larger than the width of the fastening protrusions (413, 433). According to this configuration, not only the female connecting pipe 410 and the male connecting pipe 430 can be watertightly and hermetically sealed to each other by the expansion pressure of the hollow ring 420 capable of injecting and expanding the medium. When the fastening protrusion 433 of the male connecting pipe 430 is located in the fastening groove 414 of the female connecting pipe 410, when the expansion and contraction caused by the temperature difference occurs, only the fastening groove 414 is movable. When the male connecting pipe 430 is separated out, the fastening protrusion 433 of the male connecting pipe 430 is prevented from being caught by the fastening protrusion 413 of the female connecting pipe 410.

The male connecting pipe 430 is free to move in the axial direction in the female connecting pipe 410 regardless of the fastening protrusion 413 of the female connecting pipe 410 in detail with reference to FIG. Explain.

The free end 411 is horizontally illustrated so that the inner diameter of the female connecting body 410 is substantially constant, but in some cases, the free end portion 411 may be formed to be reverse tapered so that the inner diameter thereof becomes larger toward the inside of the female connecting body 410. It may be.

Referring to FIG. 2E, the connecting pipe 500 according to a modified embodiment of the present invention is tapered such that the free end portion 511 of the female connecting pipe 510 becomes larger in diameter as the inner connecting pipe 510 becomes larger into the female connecting pipe 510. Since it is similar to the connector 400 shown in FIG. 2D except that shown, detailed description is omitted. The reference numerals of the respective components of FIG. 2E have been used similar reference numerals for the corresponding respective components of FIG. 2D for ease of understanding.

When the free end 511 of the female connecting pipe 510 is configured to be inversely tapered so that an inner diameter increases as the female connecting pipe 510 increases, the male connecting pipe 530 is separated from the female connecting pipe 510. When the force is released, the hollow ring 520 will try to move to the free end 511 of the female connector 510, but at this time the female connector 510 is toward the free end 511 Since the radius becomes narrower, it is possible to prevent the male connector 530 from being separated from the female connector 510 by increasing the expansion pressure of the hollow ring 520.

Referring to FIG. 2F, the connector pipe 600 according to the modified embodiment of the present invention includes a female connector body 610 and a male connector body 430 accommodated in the female connector body 610.

The female connection pipe 610 has a fixed end 615 is fixed to one pipe (6), the other side end forms a free end (611). The male connecting pipe 630 has a fixed end 635 fixed to another pipe 6 'facing the pipe 6, and the other side end forms a free end 631.

The free end 611 is formed to be stepped in the diameter increasing direction from the fixed end 615. The free end 611 includes a fastening protrusion 613 and a fastening groove 614 formed between the fastening protrusion 613 and the fixed end 615.

In addition, the free end 611 is provided with at least one receiving groove 612 is accommodated in the hollow ring 620 that is capable of injecting and expanding the medium along the inner periphery.

On the other hand, the free end 631 of the male connector 630 is disposed opposite to each other so as to be accommodated in the free end 611 of the female connector (610). The fastening protrusion 633 is inserted into the fastening groove 614 of the female connecting body 610, and the fastening protrusion 613 is disposed to be inserted into the fastening groove 634 of the female connecting body 610. do.

That is, a fastening groove 614 is formed in the free end 611 of the female connecting pipe 610 in the axial direction from the fixed end 615 and is adjacent to the fastening groove 614 in the axial direction. The fastening protrusions 613 are spaced apart at predetermined intervals along the main part. A fastening protrusion 633 formed at a predetermined interval along an outer circumferential portion at an end of the free end 631 of the male connecting pipe 630 may pass through the predetermined interval in the axial direction when rotated at a predetermined angle.

The free end portion 631 of the male connector 630 may further include a fastening groove 634 adjacent to the fastening protrusion 633 in the axial direction. The fastening protrusion 613 of the male connecting pipe 630 may be accommodated in the coupling groove 634 when the male connecting pipe 630 is rotated at a predetermined angle. At this time, the predetermined interval is preferably somewhat larger than the width of the fastening protrusions (613, 633).

Now, the free ends of the male and female connecting bodies according to the modified embodiment of the present invention will be described with reference to FIG. 3, regardless of the fastening protrusions, and with reference to FIGS. 4A and 4B, the hollow injection and expansion media may be described. The fastening method between the ring and the connection pipe and the pipe having the same will be described.

Figure 3 is a schematic cross-sectional view for explaining how the free ends of the male and female connecting body according to a modified embodiment of the present invention, Figures 4a and 4b is possible to inject and expand the medium according to an embodiment of the present invention It is a schematic sectional drawing for demonstrating the structure for fastening piping by a hollow ring and the connection pipe provided with the same.

Although the connection pipe 600 according to the modified embodiment of the present invention illustrated in FIG. 2F is described as an example, the connection pipes 200, 300, 400, and 500 according to one embodiment and the other modified embodiment of the present invention are also illustrated. Since the pipe can be provided with a fastening groove and a fastening protrusion, the present invention can be applied to a connection pipe in all possible ranges based on the spirit of the present invention.

Referring to FIG. 3, the free end portion 631 of the male connecting tube 630 moves freely along the free end 611 of the female connecting tube 610.

The fastening protrusion 633 formed at the end of the free end portion 631 of the male connecting pipe 630 freely moves to the inside of the free end 611 of the female connecting pipe 610 and then inside the free end 611. The fastening protrusion 613 may be hit.

At this time, the male connecting pipe 630 is rotated by a predetermined angle in one direction so that the fastening protrusion 633 is disposed correspondingly between the fastening protrusions 613 spaced apart from each other at a predetermined interval of the female connecting pipe 630. do. Subsequently, the fastening protrusion 613 is moved backward along the axial direction. Next, the male connector 630 is rotated by a predetermined angle in a direction opposite to the one direction to place the coupling protrusion 633 in the coupling groove 614.

That is, according to the exemplary embodiment of the present invention, the female connecting pipe 610 is disposed at a predetermined interval along the inner circumference of the free end 611 at a predetermined interval, and the fixed end portion is disposed at the rear thereof. 615 and a fastening groove 614 therebetween, so that the water connecting pipe 630 is opposed to the free end 631 is formed with a predetermined protrusion along the inner circumferential portion in front of the free end (631) The fastening protrusion 633 of the male connecting pipe 630 may be inserted into the fastening groove 614 formed in the axial direction through the fastening protrusion 613 of the female connecting pipe 610.

Accordingly, the fastening protrusion 633 of the male connecting pipe 630 is freely fastened to the fastening groove 614 of the female connecting pipe 610, and the fastening protrusion 613 adjacent to the fastening groove 614 in the axial direction. Axial movement is limited by According to this structure, the fastening protrusion 633 of the male connecting pipe 630 is located in the fastening groove 614 of the female connecting pipe 610, when the expansion expansion caused by the temperature difference occurs the fastening groove 614 You can only move within.

4A and 4B, the structure of the expandable hollow ring 620 accommodated in the groove portion 632 of the female connecting tube 630 will be described in detail.

According to an embodiment of the present invention, the hollow ring 620 that is capable of injecting and expanding the medium includes a hollow part 626 having a variable volume by a medium injected therein, and the hollow part 626. It consists of an outer wall 625 forming a. As illustrated in FIGS. 4A and 4B, the outer wall 625 may have at least one wrinkle 625a formed therein. More preferably, the protrusion 627 may be further formed on the surface of the outer wall 625. The protrusion 627 may increase the adhesion force due to the expansion pressure as the hollow portion 626 is expanded by injecting a medium such as air or liquid into the hollow portion 626.

The outer wall 625 of the hollow ring 620 is formed through the inlet 622 for injecting the medium into the hollow portion 626. The inlet 622 may protrude from the outer wall 625 in parallel along the axial direction to inject a medium. In this case, the medium may include at least one of air, a cement paste mixed with cement and water, a liquid rubber resin, an epoxy, or a urethane resin.

Injecting the medium from the medium container 50 using the supply valve 53 so that the hollow ring 620 has an expansion pressure of about 1 to 20 atmospheres, and then the inlet through a pressing device (not shown). Seal. When the medium is a liquid medium, after the injection and sealing through the inlet 622, the liquid medium may be hardened to maintain watertightness or airtight between the connection pipe and the pipe by the predetermined expansion pressure almost permanently. have.

The hollow ring 620 capable of injecting and expanding the medium may be a synthetic resin material of rubber, silicon, and elastic material, and may manufacture the outer wall 625 with the hollow part 625 therein, and the outer wall 625 may be It is desirable to have a physical property sufficient to withstand 1 to 20 atmospheres, such as a predetermined elasticity or a predetermined thickness.

Therefore, the hollow ring 620 that is capable of injecting and expanding the medium has a tightness or watertight pressure of 1 to 20 kg / depending on the injection medium in response to the pressure required for the delivery of fluid or gas in the pipes 6 and 6 '. cm ² I can regulate it freely between.

On the other hand, when the medium is a liquid, such as cement paste, a mixture of cement and water, a liquid rubber resin, epoxy or urethane resin, the hollow ring 620 is parallel to the inlet 622 along the outlet port along the outlet 621 may be further included. The outlet portion 621 is used to confirm that the hollow portion 626 inside the hollow ring 620 is filled with the medium. That is, by checking that the medium flows out through the outlet 621 through the monitoring unit 54, it can be confirmed that the hollow part 626 is completely filled with the medium.

While the present invention has been described above with reference to embodiments which are considered to be practically as of now, the present invention should not be construed as being limited to the above embodiments. Rather, it should be construed as including all modifications of the range which are easily changed to those skilled in the art from the above-described embodiment of the present invention to be considered equivalent.

In particular, the connection pipe and the connection method of the pipe using the same according to an embodiment of the present invention can be effectively used to connect the branch pipe of the manhole.

5 is a cross-sectional view for explaining the configuration of the pipe connected by the branch pipe according to another embodiment of the present invention.

Referring to FIG. 5, a branch pipe is generally a pipe structure installed at a branch point of an electric cable, a pipe, such as water and sewage, electricity, and gas underground, and a main pipe 701 installed through a wall vertically downward, and the It consists of the branch pipe 703 which forms a pipeline from a main building 701 to a transverse direction.

The branching part of the pipe is connected to the ground by sedimentation defects and incomplete joints, resulting in leaks, causing the groundwater to be contaminated by the sewage outflow, and the amount of sewage treatment due to the inflow of the groundwater. There was a problem such as construction.

Pipe connection method by the branch pipe according to another embodiment of the present invention is the main pipe 701 is installed through the wall and the branch pipe 703 forming a pipe in the transverse direction to the main pipe 701 connecting pipe 710 Fasten using). The connecting tube 710 is configured such that the hollow body portion 715 can be separated into two hemisphere tubes 710a, the hemisphere tubes 710a may be hinged to each other. The connection pipe 710 is configured to be coupled to the fastening protrusion 703a protruding along the inner circumference of the branch pipe 703 is formed with a flange on the upper end (711). The lower end 713 of the connector 710 has a wider flange than the upper end 711, and the lower end 713 may be inserted into the main tube 701 and fastened to face an inner wall of the main tube 701. It is configured to be.

At this time, a hollow ring capable of injecting and expanding a medium is disposed at an end of the upper part of the protruding portion 703 of the branch pipe 703 so that a medium is injected into the hollow part of the hollow ring 720 to expand the pressure. By this, the connecting pipe 710, the main pipe 701, the branch pipe 703 can maintain the airtight or watertight coupling without other coupling means. Therefore, according to this configuration, it is easy to fasten the branch pipe, it is not necessary to provide a separate T-shaped pipe, and even if the main pipe 701 and the branch pipe 703 does not form exactly 90 degrees, the hollow hollow that can be expanded The ring 720 may be fixed and maintained by expanding and contacting the connection pipe 710 and the outer circumferential portion of the main pipe 701 to face the edge of the branch pipe 701.

According to one embodiment of the present invention, it is possible to provide a connector that can provide a rigid coupling between the pipes without damaging the connection between the pipes at the time of piping.

According to an embodiment of the present invention, even if the pipes are not aligned in a line, it is possible to provide a connection pipe that can be sealed or watertight sealed between the pipes, in particular between the manhole and branch pipes, the T-shaped connection portion of the water and sewage pipe Airtight or watertight seals can be provided without the use of tubes.

According to an embodiment of the present invention, it is possible to provide a hollow ring capable of injecting and expanding a medium that can provide a gastight or watertight seal between a pipe and a connecting pipe, and to expand the hollow ring capable of injecting and expanding a medium. The pressure allows connections between pipes of various sizes with one sized pipe.

According to one embodiment of the present invention, it is possible to provide an expandable hollow ring that can prevent damage to the connecting portion of the connection pipe and the pipe.

According to one embodiment of the present invention, using a hollow ring capable of injecting and expanding a medium can easily and quickly perform the connection work between the pipes, the connection between the pipes can be made securely, Effort can be reduced.

Claims (22)

In the connector for connecting between pipes, At least one free end portion in which the pipe is inserted along the axial direction, a stop projection portion protruding in the inner diameter direction at the center thereof to limit the axial movement of the pipe, and a receiving groove portion along the inner circumference portion at both sides of the stop projection portion Formed hollow body, A hollow portion capable of injecting and expanding a medium and an outer wall forming the hollow portion, wherein an inlet is formed to penetrate the outer wall to the medium, and the outer wall has at least one corrugated medium injection and expansion. A connector comprising a hollow ring possible. The method of claim 1, The hollow body has a free end portion inward tapered toward the inside so that the inner diameter is larger toward the inside of the body. In the connector for connecting between pipes, A hollow female connecting tube including a fixed end fixed to an end of one pipe, a free end into which the other pipe is inserted along the axial direction, and at least one receiving groove formed along an inner circumference of the free end; And a hollow ring capable of injecting and expanding a medium and at least one hollow ring received in the receiving groove, the outer wall forming the hollow part. The method of claim 3, wherein The hollow body of the connecting pipe is the reverse end tapered toward the inside so that the inner diameter increases toward the inside of the main body. In the connector for connecting between pipes, It includes a female connecting tube having a fixed end and a free end on the other side fixed to one pipe, And a male connecting pipe having at least one receiving groove formed along an inner circumferential portion of the free end moving in the axial direction of the female connecting pipe at a fixed end portion and the other side end fixed to the other pipe facing the pipe,       And a hollow ring capable of injecting and expanding a medium and an outer wall forming the hollow portion, and at least one hollow ring housed in the receiving groove. The method of claim 5, wherein The free end of the female connecting body includes a fastening groove between the fixed end and the axially forwardly adjacent fastening protrusion, and the free end of the male connecting body is received in the fastening groove of the female connecting body at the distal end thereof. A connecting pipe including a fastening protrusion such that the axial forward movement is limited by the fastening protrusion of the female connecting body. The method of claim 5, wherein The fastening protrusions of the female connecting body are formed at predetermined intervals along the inner circumferential portion, and the fastening protrusions accommodated in the fastening grooves of the female connecting body are formed at the predetermined intervals at the end of the free end of the male connecting pipe. And the predetermined interval is the connector connecting the female connecting body and the male connecting body so that the fastening protrusion of the male connecting body can move forward in the axial direction when the predetermined interval is rotated along the inner circumference. The method of claim 5, wherein The female connecting tube is a connecting pipe in which the free end is tapered inward so that the inner diameter thereof increases toward the inside thereof. In the connector for connecting between pipes, A female connecting tube body having a fixed end fixed to one pipe and a free end formed at the other side end and having at least one receiving groove formed along the inner circumference; And a male connecting pipe having a fixed end fixed to the other pipe facing the pipe and a free end moving in the axial direction of the female connecting pipe on the other side end thereof. And a hollow ring capable of injecting and expanding a medium and an outer wall forming the hollow portion, and at least one hollow ring housed in the receiving groove. The method of claim 9, The free end of the female connecting body includes a fastening groove between the fixed end and the axially forwardly adjacent fastening protrusion, and the free end of the male connecting body is received in the fastening groove of the female connecting body at the distal end thereof. A connecting pipe including a fastening protrusion such that the axial forward movement is limited by the fastening protrusion of the female connecting body. The method of claim 9, The fastening protrusions of the female connecting body are formed at predetermined intervals along the inner circumferential portion, and the fastening protrusions accommodated in the fastening grooves of the female connecting body are formed at the predetermined intervals at the end of the free end of the male connecting pipe. And the predetermined interval is the connector connecting the female connecting body and the male connecting body so that the fastening protrusion of the male connecting body can move forward in the axial direction when the predetermined interval is rotated along the inner circumference. The method of claim 9, The female connecting tube is a connecting pipe in which the free end is tapered inward so that the inner diameter thereof increases toward the inside thereof. A hollow portion capable of injecting and expanding a medium and an outer wall forming the hollow portion, wherein an inlet is formed to penetrate the outer wall to the medium, and the outer wall has at least one corrugated medium injection and expansion. Possible hollow ring. The method of claim 13, The hollow ring is a hollow ring capable of injecting and expanding a medium made of synthetic resin made of rubber, silicone or elastic material. The method of claim 13, The inlet is a hollow ring capable of injecting and expanding the medium is sealed by the pressing device after the medium injection. The method of claim 13, The hollow ring is a hollow ring capable of injecting and expanding the medium further comprises an outlet disposed in parallel to the inlet. The method of claim 13, The hollow ring is a hollow ring capable of injecting and expanding the medium further comprises a projection for increasing the surface adhesion to the outer wall. The method of claim 13, The medium is a hollow ring capable of injecting and expanding a medium, including at least one of air, cement pool mixed with cement and water, liquid rubber resin, epoxy or urethane resin. In the pipe connection method for connecting at least two or more pipes using a connection pipe containing a hollow ring capable of injecting and expanding the medium, Arranging a hollow ring including a hollow portion that is capable of injecting and expanding a medium and an outer wall forming the hollow portion in at least one receiving groove formed in the hollow body inner circumference of the connector; Moving the pipe in the axial direction of the connector along the free end of the connector in which the hollow ring is disposed; Injecting a medium through an inlet formed in the axial direction on an outer wall of the hollow ring; A method of connecting a pipe using a connecting pipe having a hollow ring capable of injecting and expanding a medium, which includes sealing the inlet when the airtight or watertight seal between the connecting pipe and the pipe is caused by the expansion pressure of the hollow ring. . The method of claim 19, In the case where a force for releasing the pipe from the free end of the connecting pipe is applied, the free end of the connecting pipe is tapered inward toward the inside so as to increase the inner diameter toward the inside to prevent the release of the hollow ring. And a pipe connecting method using a connecting pipe having an expandable hollow ring. The method of claim 19, Moving the fastening protrusions formed at predetermined intervals along the outer circumference of the pipe in the connecting pipe in an axial direction; When the axial movement of the pipe is limited by turning in one direction by a predetermined interval to pass between the fastening projections formed in the predetermined interval along the inner circumference of the connecting pipe, The injection and expansion of the medium restricting the axial movement of the pipe by turning the pipe by the predetermined interval in the direction opposite to the one direction to accommodate the fastening protrusion of the pipe in the fastening groove disposed behind the fastening protrusion of the connecting pipe. Pipe connection method using a connector with a hollow ring possible. The method of claim 19, When the medium includes at least one of cement paste mixed with cement and water, a liquid rubber resin, epoxy, or urethane resin, confirming that the medium flows through the outlet of the hollow ring; Sealing the inlet and the outlet when the medium flows out;  A method of connecting a pipe using a connecting pipe having a hollow ring capable of injecting and expanding a medium, comprising curing the medium.

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