KR20200135267A - A Pack for Sealing a Branch Duct Used in Repairing Sewer and an Apparatus for Repairing the Same - Google Patents

Abstract

The present invention relates to a pack for sealing a branch duct used for repairing sewer pipes and an apparatus for repairing sewer pipes having the same. More specifically, the present invention relates to a pack for sealing a branch duct used for repairing sewer pipes and an apparatus for repairing sewer pipes having the same, which can, in a process of repairing a part with a crack of the sewer pipes connected to the branch duct, repair the sewer pipes while the branch duct is sealed. The pack for sealing the branch duct for repairing the sewer pipes comprises: a sealing tube (10) of which at least a part is made of flexible materials, and which can expand along a circumferential surface when gas is injected into the inside; a contact pad (17) which is connected to one end of the sealing tube (10) and of which the contact surface which comes in contact with the circumferential surface of sewer pipes has a radius of curvature corresponding to the circumferential surface of the sewer pipes; and injection nozzles (N1, N2) formed on the contact surface. A supply path connected to the injection nozzles (N1, N2) is formed inside the contact pad (17). The contact surface is flexible.

Description

A Pack for Sealing a Branch Duct Used in Repairing Sewer and an Apparatus for Repairing the Same}

The present invention relates to a branch pipe sealing pack for sewage pipe repair and a sewage pipe repair device having the same, and specifically, to repair a sewage pipe in a state where the branch pipe is sealed in the repair process of a crack portion of a sewage pipe connected to the branch pipe. It relates to a branch pipe sealing pack and a sewage pipe repair device having the same.

Various structures of repair devices or repair robots for repair of sewage pipes are known in the art. For the repair of sewer pipes, a pack device or a repair robot can be inserted into an inlet like a manhole and moved to a repair position, and defects such as cracks can be repaired by a repair agent. Cracks may occur in various locations of the sewer pipe, and for example, defects may occur in the area where branch pipes are connected. The branch tube needs to be sealed for repair around the branch tube.

Patent Registration No. 10-0797621 is an elevating frame inserted into the main pipe so as to be positioned at a connection part between the underground pipe body and the main pipe and the branch pipe buried in the ground, and the lifting frame rising in the direction of the branch pipe. A tube that is introduced into the branch pipe by a lifting means and the lifting frame rising by the lifting means and expanded by a compressed air supply device, and a tube provided at the periphery of the tube to increase the lifting frame. Disclosed is a branch pipe repairer comprising a contact plate adapted to be in close contact with the inner surface of the main pipe, and a press contact means for supporting the contact plate to be pressed against a peripheral wall surface of a connection portion between the main pipe and the branch pipe. .

Patent Registration No. 10-1267432 is a main packer capable of repairing the main building and rotatable inside the main building; An auxiliary packer installed on the main packer to repair the branch pipe; A photographing member installed to maintain a predetermined distance from the auxiliary packer; A rotation drive mechanism capable of rotating the main packer; And a position check unit providing a marking function for the inner wall of the storage, wherein the auxiliary packer is located on one side and the position check marking unit is located on the other side based on the photographing member, and the position check mark is located at the center of the photographing member. Disclosed is a non-drilling sewage pipe repair apparatus for repairing a portion connected to a main pipe and a branch pipe of a sewage pipe in which the distance to the center of the negative marker and the distance from the center of the photographing member to the center of the auxiliary packer are the same.

Patent Registration No. 10-1157080 is a remote control vehicle that is remotely controlled from the outside of the sewer pipe and runs inside the sewer pipe in the direction of the sewer pipe axis; A packer disposed in front of the remote control vehicle, a branch pipe lining sheet wound on an outer circumferential surface thereof and an air injection pipe connected thereto, and expandable by air injection; A rotating means disposed in front of the remote control vehicle and remotely controlled from outside the sewer pipe to rotate the packer about the sewer pipe shaft; A packing endless tilting means mounted on the distal end of the rotating means to tilt the packer 360 degrees in all directions; A hydraulic cylinder coupled to the packer endless tilting means and remotely controlled from the outside of the sewer pipe, a piston rod installed to be protruding and protruding from the hydraulic cylinder, and a packer bracket coupled to an upper end of the piston rod to which the packer is mounted. Disclosed is a non-drilling maintenance device for a junction of a sewer pipe and a branch pipe including a packer insertion means.

The prior art discloses a method of repairing defects around the branch tube by using an adhesive resin or the like while sealing the branch tube by an expandable tube, an auxiliary packer or a packer. In the repair process around the branch pipe, it is necessary to inject the repair material in a state in which the branch pipe is in close contact with a pad or similar means while sealing the branch pipe. However, the prior art does not disclose a maintenance device around a branch pipe having such a structure.

The present invention has the following objects to solve the problems of the prior art.

Prior Art 1: Patent Registration No. 10-0797621 (Wooam E&C, announced on January 23, 2008) Prior Art 2: Patent Registration No. 10-1267432 (Technoforce Co., Ltd., announced on May 30, 2013) Non-excavated sewage pipe repair method and apparatus for repairing the part connected to the main pipe and branch pipe of the sewage pipe Prior Art 3: Patent Registration No. 10-1157080 (Alpha Eco Co., Ltd., announced on June 21, 2012) Non-drilling repair device and repair method for the junction of sewage pipe and branch pipe

An object of the present invention is a branch pipe sealing pack for sewage pipe repair and a sewage pipe having the same to ensure stable and quick maintenance by allowing the maintenance agent to be injected while the branch pipe is sealed while the surrounding part is in close contact with a close contact means. It is to provide a repair device.

According to a preferred embodiment of the present invention, the branch pipe sealing pack for sewage pipe repair includes at least a sealing tube made of an elastic material and expandable along the circumferential surface when gas is injected therein; A contact pad having a radius of curvature corresponding to the circumferential surface of the sewer pipe while one end of the sealing tube is connected; And an injection nozzle formed on a contact surface, and a supply path connected to the injection nozzle is formed inside the contact pad, and the contact surface has elasticity.

According to another suitable embodiment of the present invention, an arrangement groove is formed along a circumferential surface of the sealing tube at a portion where the contact pad is connected to the sealing tube, and a sealing gasket is formed along the circumferential surface of the arrangement groove.

According to another suitable embodiment of the present invention, the sewage pipe repair apparatus includes a mobile robot equipped with a lighting means; A connection block coupled to the front of the mobile robot; A contact cylinder and a fixing member disposed to extend to both sides of the connection block; A contact pad coupled to one end of the contact cylinder; A sealing tube made of an elastic material that is connected to one end of the contact pad and expandable by gas injected therein; An injection nozzle formed on a contact surface in which the contact pad contacts the inner circumferential surface of the sewer pipe; And a supply conduit connected to the injection nozzle to supply a repair agent.

According to another suitable embodiment of the present invention, the connection block further includes a fixing pad which is rotatable with respect to the mobile robot and formed at one end of the fixing member to contact the inner circumferential surface of the sewer pipe.

The branch tube sealing pack according to the present invention allows the branch tube to be sealed to a desired level by a structure that expands in the circumferential direction. The branch pipe sealing pack according to the present invention allows the circumference of the branch pipe to be sealed together with the branch pipe by a contact pad corresponding to the inner circumferential surface of the sewer pipe. In addition, the repair work is stably and quickly performed by injecting a repair agent and curing in a sealed state. In addition, the repair apparatus according to the present invention can be applied to repair of a sewage pipe to which branch pipes of various diameters are connected by adjusting the radius of curvature or elasticity of the contact pad.

1 shows an embodiment of a branch pipe sealing pack according to the present invention.
2 shows an embodiment of a maintenance device according to the present invention.
3 shows an embodiment of a contact pad applied to the branch pipe sealing pack according to the present invention.
Figure 4 shows another embodiment of the branch pipe sealing pack according to the present invention.
5 shows an embodiment of the operation process of the maintenance device according to the present invention.

In the following, the present invention will be described in detail with reference to the embodiments shown in the accompanying drawings, but the embodiments are for a clear understanding of the present invention, and the present invention is not limited thereto. In the following description, components having the same reference numerals in different drawings have similar functions, so if they are not necessary for the understanding of the invention, they will not be described repeatedly, and well-known components will be briefly described or omitted, but the present invention It should not be understood as being excluded from the embodiment of.

1 shows an embodiment of a branch pipe sealing pack according to the present invention.

Referring to Figure 1, the branch tube sealing pack is made of at least a portion of the elastic material and when gas is injected into the sealing tube 10 which is expandable along the circumferential surface; A contact pad 17 having a radius of curvature corresponding to the circumferential surface of the sewer pipe while one end of the sealing tube 10 is connected; And injection nozzles N1 and N2 formed on a contact surface, and a supply path connected to the injection nozzles N1 and N2 is formed in the contact pad 17, and the contact surface has elasticity.

The branch pipe sealing pack according to the present invention may have a function of sealing the branch pipe in the process of repairing the sewer pipe. The branch pipe sealing pack also supplies the repair agent supplied through the supply conduits 15a and 15b to the repair point through the injection nozzles N1 and N2, and makes the repair point sealed to the outside during the curing process of the repair agent. And the branch pipe sealing pack can be combined with various maintenance robots or mobile robots.

The sealing tube 10 may have a cylindrical shape as a whole, and an elastic body 11 extending to a predetermined length; A shape-retaining portion 12 formed at one end of the elastic body 11; And a connection portion 13 formed below the elastic body 11. The elastic body 11 may have a shape similar to a hollow cylinder or tube as a whole, and may be made of a material having elasticity such as, for example, synthetic resin, rubber, or a mixture thereof. Depending on the design structure, an annular elastic guide strip 111 may be formed along the circumferential surface of the elastic body 11. The elastic guide strip 111 may be made of a material having a higher density than the elastic body 11, a larger thickness, or a material having less elasticity than the elastic body 11. The elastic guide strip 111 is a shape surrounding the circumferential surface of the elastic body 11 and may be formed by separating a plurality of them along the length direction. The elastic body 11 is expanded or contracted in a predetermined shape by the elastic guide strip 111 and the elastic body 11 is maintained in a predetermined shape as a whole. The shape maintaining portion 12 may be formed at the upper end of the elastic body 11, and the upper end of the elastic body 11 is maintained in a cylindrical shape. The shape-retaining portion 12 may be made so that the circular circumferential surface has a constant thickness so that the central portion has a concave shape. The shape maintaining part 12 may be made of a material having less elasticity compared to the elastic body 11, whereby the shape maintaining part 12 is entirely in the process of inflating by injecting gas into the elastic body 11 It may have a function of maintaining a cylinder shape or a tube shape.

The connection part 13 may have a function of allowing the sealing tube 10 to be connected to the contact pad 17, and has a cylinder shape so that gas is introduced into the interior of the telescopic body 11 or gas is discharged to the outside. It can have a function. The connection part 13 may be made of a solid material or thicker than the telescopic body 11, and may be made in a structure that maintains a predetermined shape regardless of the injection or discharge of air inside the telescopic body 11 have. The lower end of the connecting portion 13 may be connected to the contact pad 17.

The contact pad 17 may have a function of sealing a peripheral portion of the repair point. The upper portion of the contact pad 17 may be a contact surface in contact with the inner circumferential surface of the sewer pipe, and the contact surface may be made of a material having adhesion and elasticity. For example, the contact surface can be made of rubber, a stretchable elastomer material, or a stretchable synthetic resin material. In addition, the contact pad 17 may have an overall bendable property. The contact pad 17 may have a circular, polygonal or elliptical shape as a whole, and the sealing tube 10 may be connected to the central portion of the contact pad 17. The inner circumferential surface of the sewer pipe may be curved, and the contact pad 17 may have a radius of curvature corresponding to the radius of curvature of the inner circumferential surface of the sewer pipe. In addition, a rigid core material 171 may be disposed inside the contact pad 17 according to the design structure of the contact pad 17. The rigid core 171 maintains the shape of the contact pad 17 so that the entire contact pad 17 stably adheres to the inner peripheral surface of the sewer pipe. Another function of the contact pad 17 is to connect the supply conduits 15a and 15b with the injection nozzles N1 and N2. The repair solution may be supplied from the outside through the supply conduits 15a and 15b, and may be injected to the repair point by the injection nozzles N1 and N2. Referring to (a) of FIG. 1, the supply conduits 15a and 15b may be formed independently from the contact cylinder 14 for injecting or discharging gas into the sealed tube 10. Injection pipes 151 and 152 for injecting a maintenance agent may be disposed inside the supply conduits 15a and 15b. Alternatively, referring to (b) of FIG. 1, the supply conduits 15a and 15b are not independently formed, and the injection tubes 151 and 152 may be disposed inside the contact cylinder 14. The supply conduits 15a and 15b or the injection tubes 151 and 152 may be made of a flexible material, and the contact cylinder 14 may be made of a rigid material. In contrast, the gas guide tube 141 disposed inside the contact cylinder 14 may be made of any material. The reason why the contact cylinder 14 is made of a solid material is due to the fact that the contact cylinder 14 is made of a structure that can move up and down, as described below.

Injection nozzles N1 and N2 may be disposed above the contact pad 17, and one or more injection nozzles N1 and N2 may be provided. Two injection nozzles N1 and N2 may be provided when the maintenance agent is a two-component type such as a main body and a hardener, and one injection nozzle may be disposed when the maintenance agent is a one-component type. The injection nozzles N1 and N2 may be disposed on the nozzle block 153, and the nozzle block 153 may be formed on a contact surface of the contact pad 17. The nozzle block 153 may have a plate shape, and may be disposed while forming a groove downward from the contact surface. With this structure, the injection nozzles N1 and N2 may be disposed in a concave portion formed downward from an upper plane of the contact surface. The nozzle block 153 prevents the positions of the injection nozzles N1 and N2 from changing while the shape or structure changes while the contact surface is in contact with the inner circumferential surface of the sewer pipe. To this end, the nozzle block 153 may be made of a material having low elasticity or elasticity, but is not limited thereto. Referring to (B) of FIG. 1, a connection path is formed in the rigid core material 171 so that the injection nozzles N1 and N2 and the injection pipes 151 and 152 are connected to each other. In addition, the contact pad 17 may have a planar shape or a curved shape, and the injection nozzles N1 and N2 may be disposed on a contact surface having a planar shape or a curved shape.

The branch pipe sealing pack described above is combined with a mobile robot to repair sewage pipes to become a sewage pipe repair device.

2 shows an embodiment of a maintenance device according to the present invention.

Referring to Figure 2, the sewage pipe repair device is a mobile robot 21 in which the lighting means 22 is installed; A connection block 24 coupled to the front of the mobile robot 21; A contact cylinder 14 and a fixing member 25 arranged to extend to both sides of the connection block 24; A contact pad 17 coupled to one end of the contact cylinder 14; A sealing tube 10 made of an elastic material that is connected to the contact pad 17 at one end and is expandable by gas injected therein; An injection nozzle N formed on a contact surface in which the contact pad 17 contacts the inner circumferential surface of the sewer pipe; And supply conduits 15a and 15b connected to the injection nozzle N to supply the maintenance agent.

The mobile robot 21 may have a moving unit 211 such as a wheel, and movement may be controlled from the outside by a driving unit such as a motor disposed therein. An image acquisition unit is installed in the mobile robot 21 so that the positions of the repair point RP and the branch pipe ST can be confirmed. The image acquired by the image acquisition unit may be transmitted to an externally disposed control unit. The control unit can move the mobile robot 21 to the maintenance position. In the maintenance position, while the mobile robot 21 is fixed at a predetermined position by the contact cylinder 14 and the fixing member 25, the adhesive pad 17 is in close contact with the inlet of the branch tube ST and the maintenance point RP. The sealing tube 10 may be inserted into the inside of the tube. The connection block 24 may be disposed in front of the mobile robot 21, and the contact cylinder 14 and the fixing member 25 may be disposed to extend in different directions on the connection block 24. When the sealing tube 10 is inserted into the branch pipe ST and the adhesive pad 17 is in close contact with the inner circumferential surface of the sewer pipe D, the gas is sealed through the gas guide pipe disposed inside the contact cylinder 14. It can be injected into the interior of (10). And as the sealing tube 10 expands along the circumferential surface, the branch tube ST may be sealed. In addition, the repair agent may be supplied from the repair agent supply unit disposed outside the sewer pipe D to the supply conduit 15a through an appropriate connection conduit 23. The repair agent may be injected to the repair point RP through the injection nozzle, and may be cured together with the soil PS around the sewer pipe D. In addition, when the curing of the repair agent is completed, air inside the sealing tube 10 may be discharged. And the length of the contact cylinder 14 and the fixing member 25 may be reduced. Accordingly, the mobile robot 21 is in a state capable of moving inside the sewer pipe (D). The contact cylinder 14 or the fixing member 25 may have a structure in which the length is adjustable, and fixing pads 251 having elasticity may be disposed on both sides of the fixing member 25. In addition, the connection block 24 may be arranged to be rotatable with respect to the mobile robot 21.

Referring to (b) of FIG. 2, a connection conduit 23 may be disposed inside the mobile robot 21, and a connection connector 231 is installed in the front of the mobile robot 21. Thus, the connection conduit 23 and the supply conduit 15a may be connected to each other. The maintenance agent supplied from the externally disposed maintenance agent supply unit may be transferred to the supply conduit 15a through the connection conduit 23. In addition, it may be injected into the repair point RP through the injection nozzle N disposed on the contact surface of the contact pad 17. The connection block 24 includes a fastening connector 241 disposed in front of the mobile robot 21; For example, it may be made of a connection tube 27 having a T-shaped shape and a rotation coupler 242 that couples the coupling connector 241 and the connection tube 27 so as to be rotatable. It may consist of a supply connection conduit 142 that extends into the rotation coupler 242 through the inside of the mobile robot 21 and is coupled to the connection tube 27. A gas guide tube may be disposed inside the supply connection conduit 142. The connection tube 27 is coupled to the rotation coupler 242 so as to be rotatable with respect to the mobile robot 21, and the contact cylinder 14 and the fixing member 25 are coupled to the connection tube 27 so that the length can be adjusted. I can.

The rotational structure of the connection block 24 or the length adjustment of the contact cylinder 14 and the fixing member 25 may be performed in various ways, and the present invention is not limited to the presented embodiment.

3 shows an embodiment of a contact pad applied to the branch pipe sealing pack according to the present invention.

Referring to FIG. 3, the sealing tube 10 may have a double wall structure, and the inner wall may be made in a structure that expands or contracts easily by the pressure of gas. The end portion of the gas guide pipe 141 may be located at the connection portion 13, and an opening/closing valve 31 may be disposed. The on-off valve 31 may be a valve known in the art, such as a solenoid valve, and may be opened and closed for injection and discharge of gas. The contact pad 17 may be made to have an overall polygonal plane, a circular plane, and an elliptical plane. The contact surface of the contact pad 17 may be formed to have a step difference. Specifically, the inner portion and the outer portion of the groove boundary line HL made in a closed curve shape may have different heights. For example, the inner surface of the contact surface may be formed at a lower height than the outer circumferential surface while forming an arrangement groove. In addition, the connecting portion 13 may be positioned in the placement groove, and injection nozzles N1 and N2 may be disposed. The adhesion of the adhesive pad 17 to the inner circumferential surface of the sewer pipe may be increased by the arrangement groove structure.

The adhesive pad 17 may have various planar shapes and may have a curvature corresponding to the curvature of the inner circumferential surface of the sewer pipe.

Figure 4 shows another embodiment of the branch pipe sealing pack according to the present invention.

Referring to FIG. 4, the branch pipe sealing pack may be coupled to the robot arm, and the branch pipe sealing pack may be coupled to the robot arm to be applied to maintenance of sewage pipes.

The robot arm includes a rotary joint unit 45 coupled to the mobile robot described above; A close contact arm 43 coupled to the rotary joint unit 45 by a rotary joint 42; And an image acquisition unit 26 disposed in front of the contact arm 43. The image acquisition unit 26 may be coupled to a rotatable joint unit to be disposed in a structure capable of acquiring images for various positions inside the sewer pipe. The sealing tube 10 may have a cylinder shape in which gas can be injected by sealing the inside extending upward, and a contact pad 17 may be coupled to one end of the sealing tube 10. The contact pad 17 may have a curved structure in the shape of a saddle, and an arrangement groove 44 may be formed on a circumferential surface of a portion to which the sealing pad 10 is coupled. The placement groove 44 may be circular surrounding the inlet and the repair point of the branch tube, and may be formed to have a lower height compared to the outside of the contact surface. A nozzle block 153 in which an injection nozzle is disposed may be disposed in the placement groove 44. At least one sealing gasket 411a and 411b having a closed curve shape may be disposed in a close contact portion forming a stepped surface around the placement groove 44. The branch pipe sealing pack can be rotated while being moved up and down by the robot arm, and can be moved to a repair point formed in the sewer pipe.

The branch pipe sealing pack can be combined with various maintenance devices, and the present invention is not limited to the presented embodiments.

5 shows an embodiment of the operation process of the maintenance device according to the present invention.

Referring to FIG. 5, in order to repair the branch pipe portion of the sewage pipe, the branch pipe sealing pack may be moved by being coupled to a mobile robot, and the sealing tube may be inserted by moving the branch pipe (P51). As the sealing tube is inserted into the branch tube, the contact pad may be tightly pressed around the branch tube and the repair point (P52). In addition, as air is injected from the outside and the sealing tube is expanded, the branch tube may be sealed (P53). When the branch pipe is sealed, it can be confirmed that the contact pad is in close contact with the inner circumferential surface of the sewer pipe (P54). The adhesion state can be checked, for example, by whether gas is leaking or by detecting the shape or pressure of the adhesion state of the adhesion pad. When the adhesion of the contact pad is confirmed, the repair agent solution may be injected into the repair point through the injection nozzle and cured (P55). And when a certain time elapses, the air inside the sealed tube is discharged (P56), after which the contact pad may be separated from the repair point, and the repair work may be completed.

The branch tube sealing pack according to the present invention allows the branch tube to be sealed to a desired level by a structure that expands in the circumferential direction. The branch pipe sealing pack according to the present invention allows the circumference of the branch pipe to be sealed together with the branch pipe by a contact pad corresponding to the inner circumferential surface of the sewer pipe. In addition, the repair work is stably and quickly performed by injecting a repair agent and curing in a sealed state. In addition, the repair apparatus according to the present invention can be applied to repair of a sewage pipe to which branch pipes of various diameters are connected by adjusting the radius of curvature or elasticity of the contact pad.

The present invention has been described in detail above with reference to the presented embodiments, but those of ordinary skill in this field will be able to make various modifications and modifications without departing from the technical spirit of the present invention with reference to the presented embodiments. . The present invention is not limited by such modifications and variations of the invention, but is limited by the claims appended below.

10: sealing tube 11: telescopic body
12: shape retention part 13: connection part
14: contact cylinder 15a, 15b: supply conduit
17: contact pad 21: mobile robot
22: lighting means 23: connecting conduit
24: connection block 25: fixing member
27: connection tube 31: on-off valve
42: rotary joint 43: contact arm
44: placement groove 45: rotary joint unit
111: expansion and contraction guide strip 141: gas guide tube
142: supply connection conduit 151, 152: injection tube
153: nozzle block 171: rigid core
211: vehicle 231: connector
241: mating connector 242: rotary coupler
251: fixing pad 411a, 411b: sealing gasket
D: Sewer pipe HL: Groove boundary
N. N1, N2: injection nozzle PS: soil
RP: maintenance point ST: branch pipe

Claims (1)

It consists of an elastic body 11 and a shape-retaining part 12 formed at one end of the elastic body 11 while becoming a hollow cylinder shape, and when gas is injected into the interior, it is sealed that can expand along the circumferential surface. Tube 10;
One end of the sealing tube 10 is connected to the central portion, while having a contact surface in contact with the circumferential surface of the sewer pipe, a contact pad 17 that is made of a material having adhesion and elasticity and has a curved structure of a saddle shape as a whole;
An arrangement groove 44 formed at a lower height than the outer side of the contact surface on the circumferential surface to which the sealing tube 10 is coupled;
A nozzle block 153 to which injection nozzles N1 and N2 are coupled while being disposed in the placement groove 44;
Supply conduits 15a and 15b for supplying water-retaining liquid from the outside to the injection nozzles N1 and N2; And
A branch pipe sealing pack for sewage pipe repair comprising at least one sealing gasket (411a, 411b) formed in a closed curve at a close contact portion forming a stepped surface along the circumference of the arrangement groove 44.

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