KR20190130552A - 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 pipe for repairing a sewer pipe and a device for repairing a sewer pipe having the same and, specifically, to a pack for sealing a branch pipe for repairing a sewer pipe, which can repair a sewer pipe when a branch pipe is sealed during a repair process of a crack part in the sewer pipe connected to a branch pipe, and a device for repairing a sewer pipe having the same. The pack for sealing a branch pipe for repairing a sewer pipe includes: a sealing tube (10) which can be expanded along the circumferential surface when gas is injected into the sealing tube, wherein at least a part of the sealing tube (10) is formed of an elastic material; a contact pad (17) in which a contact surface coming into contact with the circumferential surface of the sewer pipe has a curvature radius corresponding to the circumferential surface of the sewer pipe, wherein one end of the sealing tube (10) is connected to the contact pad (17); and an injection nozzle (N1, N2) formed on the contact surface. A supply path connected to the injection nozzle (N1, N2) is formed in the contact pad (17), and the contact surface has elasticity.

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 sewer pipe sealing pack for sewage pipe repair, and a sewer pipe repair device having the same, and specifically, a sewer pipe repair to enable repair of a sewer pipe in a state in which a branch pipe is sealed in the process of repairing a cracked portion of a sewer pipe connected to a branch pipe. It relates to a branch pipe sealing pack and a sewer pipe repair device having the same.

Various repairing devices or repairing robots for the repair of sewer pipes are known in the art. To repair the sewage pipe, a pack device or a repair robot may be introduced into the entrance, such as a manhole, and moved to a repair position, and a fault such as a crack may be repaired by the repair agent. Cracks may occur at various locations of the sewer pipe, for example, defects may be generated at areas where branch pipes are connected. The branch pipe needs to be sealed for repair around the branch pipe.

Patent registration No. 10-0797621 is a lifting frame which is put into the interior of the main pipe to be located at the connection portion of the underground pipe and the main pipe and the branch pipe buried in the ground, and to raise the lifting frame in the direction of the branch pipe A lifting means, a tube which is introduced into the branch pipe by the lifting frame which is lifted by the lifting means, and is expanded by a compressed air supply device; It is disclosed that the branch pipe repair machine including a close contact plate to be in close contact with the inner surface of the main pipe, and a pressure contact means for supporting the close contact plate to be in close contact with the peripheral wall surface of the connecting portion of the main pipe and the branch pipe. .

Patent registration No. 10-1267432 can repair the main building and the main packer rotatable inside the main building; An auxiliary packer installed in the main packer to repair the branch pipe; A photographing member provided to maintain a predetermined distance from the auxiliary packer; A rotation drive mechanism capable of rotating the main packer; And a positioning unit that provides a marking function for the inner wall of the storage, wherein the auxiliary packer is located on one side and the positioning marking unit is located on the other side of the storage member, and the positioning marking is performed at the center of the shooting member. A non-excavated sewage pipe repair apparatus for repairing a portion where a main pipe and a branch pipe of a sewer pipe are equal in distance from the center of the negative marker to the center of the photographing member to the center of the auxiliary packer is disclosed.

Patent registration No. 10-1157080 is a remote control from the outside of the sewer pipe, a remote control vehicle for driving the sewer pipe in the direction of the sewer pipe; A packer disposed at the front of the remote control vehicle and having a branch pipe lining sheet wound on an outer circumferential surface thereof and connected to an air injection pipe and expandable by air injection; Rotation means disposed at the front of the remote control vehicle and remotely controlled outside the sewer pipe to rotate the packer about the sewer pipe shaft; Packing endless tilting means mounted on the tip of the rotating means to tilt the packer 360 degrees in all directions; A hydraulic cylinder which is coupled to the packer endless tilting means and is remotely controlled from the outside of the sewer pipe, a piston rod that is mounted to the hydraulic cylinder so as to be protruded, and a packer bracket which is coupled to an upper end of the piston rod to mount the packer. Disclosed is a non-excavation repair apparatus for a sewer pipe and branch pipe joint including a packer inserting means.

The prior art discloses a method for repairing defects around a branch tube by an adhesive resin, while sealing the branch tube by an inflatable tube, auxiliary packer or packer. In the repairing process around the branch pipe, it is necessary to seal the branch pipe while injecting the repair material in a state in which the branch pipe is brought into close contact with a pad-like means. However, the prior art does not disclose a repair device around a branch pipe having such a structure.

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

Prior Art 1: Patent Registration No. 10-0797621 (Uam Construction Co., Ltd., Announcement of January 23, 2008) Prior Art 2: Patent Registration No. 10-1267432 (Techno Force Co., Ltd., May 30, 2013) Non-excavated sewage pipe repairing method and apparatus for repairing the main and branch pipes connected to the sewer pipe Prior Art 3: Patent Registration No. 10-1157080 (Alpha Eco Co., Ltd., June 21, 2012) Non-excavation repair device and repair method of the sewer pipe and branch pipe joint

It is an object of the present invention to seal a branch pipe and to maintain a stable and rapid maintenance by injecting a repair agent in a state in which the surrounding part is in intimate contact by a close contact means, and a branch pipe sealing pack for repair and a sewer pipe having the same It is to provide a maintenance device.

According to a preferred embodiment of the present invention, the sewage pipe repair branch tube sealing pack includes at least a portion of a flexible tube expandable along a circumferential surface when gas is injected therein; One end of the sealing tube is connected to the contact surface in contact with the circumferential surface of the sewer pipe is a contact pad having a radius of curvature corresponding to the circumferential surface of the sewer pipe; And an injection nozzle formed on the contact surface, 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, a placement groove is formed along the circumferential surface of the closure tube and a sealing gasket is formed along the circumferential surface of the placement groove at a portion where the contact pad is connected with the closure tube.

According to another suitable embodiment of the present invention, the sewage pipe repair apparatus includes a mobile robot provided with lighting means; A connection block coupled to the front of the mobile robot; A contact cylinder and a fixing member arranged to extend to both sides of the connection block; A contact pad coupled to one end of the contact cylinder; A closed tube made of an elastic material expandable by a gas injected therein while one end is connected to the contact pad; An injection nozzle formed in the contact surface, wherein the contact pad is in contact with 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 comprises a fixing pad rotatable with respect to the mobile robot and formed at one end of the fixing member and in contact with the inner circumferential surface of the sewer pipe.

The branch pipe sealing pack according to the present invention allows the branch pipe 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 maintenance work is stably and quickly performed by curing the injection agent in a sealed state. In addition, the repair device according to the present invention is to be applied to the repair of the sewer pipe connected to the branch pipe of various diameters by adjusting the radius of curvature or elasticity of the contact pad.

1 illustrates an embodiment of a branch tube hermetic pack according to the present invention.
2 illustrates an embodiment of a repair apparatus according to the present invention.
Figure 3 illustrates an embodiment of a contact pad applied to the branch tube seal pack according to the present invention.
Figure 4 shows another embodiment of a branch tube sealing pack according to the present invention.
Figure 5 shows an embodiment of the operation of the maintenance device according to the present invention.

Hereinafter, the present invention will be described in detail with reference to the embodiments set forth in the accompanying drawings, but the embodiments are provided for clarity of understanding and the present invention is not limited thereto. In the following description, components having the same reference numerals in different drawings have similar functions, and thus are not repeatedly described unless necessary for understanding of the invention, and well-known components are briefly described or omitted. It should not be understood to be excluded from the embodiment of.

1 illustrates an embodiment of a branch tube hermetic pack according to the present invention.

Referring to FIG. 1, a branch tube sealing pack may include at least a portion of a stretchable tube 10 and expandable along a circumferential surface when gas is injected therein; One end of the sealing tube 10 is connected to the contact surface in contact with the circumferential surface of the sewage pipe has a contact pad 17 having a radius of curvature corresponding to the circumferential surface of the sewer pipe; And injection nozzles N1 and N2 formed on the contact surface, and a supply path connected to the injection nozzles N1 and N2 is formed inside the contact pad 17, and the contact surface has elasticity.

Branch pipe sealing pack according to the present invention may have a function of sealing the branch pipe in the course of repair of the sewage pipe. The branch tube 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 allows the repair point to be sealed to the outside during the curing of the repair agent. And the branch pipe seal pack can be combined with various maintenance robots or mobile robots.

Sealing tube 10 may be a cylindrical shape as a whole, the stretching body 11 extending to a predetermined length; A shape maintaining portion 12 formed at one end of the elastic body 11; And a connecting portion 13 formed below the elastic body 11. The telescopic body 11 may be shaped like a hollow cylinder or tube as a whole, and may be made of a flexible material such as, for example, synthetic resin, rubber or a mixture thereof. According to the design structure, an annular elastic guide strip 111 may be formed along the circumferential surface of the elastic body 11. The stretch guide strip 111 may be made of a higher density than the stretch body 11, may be made to have a large thickness, or may be made of a material that is less stretched than the stretch body 11. The stretch guide strip 111 may be formed by separating a plurality of stretch guide strips along a length direction in a shape surrounding the circumferential surface of the stretch body 11. The elastic body 11 is expanded or stretched to a predetermined shape by the elastic guide strip 111 so that the elastic body 11 is maintained in a predetermined shape as a whole. The shape maintaining part 12 may be formed at an 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 can be made such that the circular circumferential surface has a constant thickness so that the central portion is concave. The shape retaining portion 12 may be made of a material having a smaller elasticity than the stretchable body 11, whereby the shape retaining portion 12 may be injected into the inside of the stretchable body 11 to expand the whole. It may have a function such that the cylinder shape or the tube shape is maintained.

The connecting portion 13 may have a function of connecting the sealing tube 10 to the contact pad 17, and may have a cylindrical shape to allow gas to flow into or flow out of the elastic body 11. It can have a function. The connecting portion 13 may be made of a rigid material or thicker than the elastic body 11, and may be made of a structure in which a predetermined shape is maintained regardless of the injection or discharge of air into the elastic body 11. have. The lower end of the connecting portion 13 may be connected with the contact pad 17.

The contact pad 17 may have a function to seal the circumferential portion of the repair point. The upper portion of the contact pad 17 may be a contact surface which contacts 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 may be made of rubber, stretchable elastomeric material or stretchable synthetic resin material. And the contact pad 17 may have a property that can be bent as a whole. The contact pads 17 may be generally circular, polygonal or elliptical in shape and the closure tube 10 may be connected to the central portion of the contact pads 17. The inner circumferential face 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 face of the sewer pipe. In addition, the rigid core material 171 may be disposed in 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 is stably in close contact with the inner circumferential 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 liquid may be supplied from the outside through the supply conduits 15a and 15b and introduced into the repair point by the injection nozzles N1 and N2. Referring to FIG. 1A, the supply conduits 15a and 15b may be formed independently of the contact cylinder 14 for injecting or discharging gas into the sealed tube 10. Injection pipes 151 and 152 may be disposed in the supply conduits 15a and 15b for input of a repair agent. Alternatively, referring to FIG. 1B, injection conduits 15a and 15b may be independently formed, and injection tubes 151 and 152 may be disposed inside the contact cylinder 14. The supply conduits 15a and 15b or the injection conduits 151 and 152 can be made of a bendable material and the contact cylinder 14 can be made of a rigid material. In contrast, the gas induction pipe 141 disposed inside the contact cylinder 14 may be made of any material. The reason that the contact cylinder 14 is made of a rigid material is due to the structure of the contact cylinder 14 being movable up and down as described below.

Injection nozzles N1 and N2 may be disposed above the contact pads 17, and one or more injection nozzles N1 and N2 may be provided. The injection nozzles N1 and N2 may be two, for example, a main body and a curing agent, when the repair agent becomes a two-part type, and one injection nozzle may be disposed when the repair agent is a one-part type. Injection nozzles N1 and N2 may be disposed in the nozzle block 153, and the nozzle block 153 may be formed in the 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 the concave portion formed downward from the upper plane of the contact surface. The nozzle block 153 prevents the position of the injection nozzles N1 and N2 from changing as the shape or structure changes while the contact surface contacts the inner circumferential surface of the sewer pipe. To this end, the nozzle block 153 may be made of a material having a small elasticity or elasticity, but is not limited thereto. Referring to FIG. 1B, a connection path is formed on the rigid core 171 to allow the injection nozzles N1 and N2 and the injection pipes 151 and 152 to be connected to each other. The contact pads 17 may be planar or curved, and the injection nozzles N1 and N2 may be disposed on contact surfaces having a planar or curved shape.

The branch pipe seal pack described above is combined with a mobile robot for the repair of the sewer pipe and becomes a sewer repair device.

2 illustrates an embodiment of a repair apparatus according to the present invention.

2, the sewage pipe repair apparatus includes a mobile robot 21 provided with lighting means 22; 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 connecting block 24; A contact pad 17 coupled to one end of the contact cylinder 14; One end is connected to the contact pad 17, the hermetic tube 10 made of a flexible material expandable by a gas injected therein; An injection nozzle N formed at a contact surface at which the contact pad 17 is in contact with an inner circumferential surface of the sewer pipe; And supply conduits 15a and 15b connected to the injection nozzle N to supply a repair agent.

The mobile robot 21 may have a moving means 211 such as a wheel, and the movement may be adjusted from the outside by a driving means such as a motor disposed therein. The image acquisition unit may be installed in the mobile robot 21 to determine the positions of the repair point RP and the branch pipe ST. An image acquired by the image acquisition unit may be transmitted to a control unit disposed outside. The control unit can move the mobile robot 21 to the maintenance position. While the mobile robot 21 is fixed at the fixed position by the contact cylinder 14 and the fixing member 25 in the repair position, the adhesive pad 17 is in close contact with the inlet and the repair point RP of the branch pipe ST. The hermetic tube 10 may be inserted into 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 in the connection block 24 so as to extend in different directions. 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 induction tube disposed inside the contact cylinder 14. It may be injected into the interior of 10. In addition, the sealing tube 10 may be expanded along the circumferential surface to seal the branch tube ST. And the repair agent can be supplied to the supply conduit 15a through the appropriate connection conduit 23 from the repair agent supply unit disposed outside the sewer pipe D. The repair agent may be injected through the injection nozzle to the repair point RP and may be cured together with the soil sand PS around the sewer pipe D. When the hardening of the repair agent is completed, air inside the sealed tube 10 may be discharged. And the length of the contact cylinder 14 and the fixing member 25 can be reduced. Thereby, the mobile robot 21 will be in the state which can move inside the sewage pipe D. FIG. The contact cylinder 14 or the fixing member 25 may have a structure that can be adjusted in length, and elastic fixing pads 251 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 the connection conduit 23 may be provided with a connection connector 231 in front of the mobile robot 21. Thus, the connecting conduit 23 and the supply conduit 15a can be connected to each other. The repair agent supplied from the repair agent supply unit arranged externally may be transferred to the supply conduit 15a through the connection conduit 23. The injection point N may be injected into the maintenance 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-shape and a rotation coupler 242 which rotatably couples the connection connector 241 and the connection tube 27 to each other. It may consist of a supply connection conduit 142 extending into the rotary coupler 242 through the interior of the mobile robot 21 and coupled to the connection tube 27. A gas guide tube may be disposed inside the supply connection conduit 142. The connecting tube 27 is coupled to the rotary 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 connecting tube 27 so as to be adjustable in length. Can be.

Rotational structure of the connection block 24 or length adjustment of the contact cylinder 14 and the fixing member 25 can be made in various ways, and the present invention is not limited to the embodiments shown.

Figure 3 illustrates an embodiment of a contact pad applied to the branch tube seal pack according to the present invention.

Referring to FIG. 3, the hermetic tube 10 may be made of a double wall structure, and the inner wall may be made of a structure that is easily expanded or contracted by the pressure of the gas. An end portion of the gas induction pipe 141 may be located at the connecting portion 13, and an on / off 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 the injection and discharge of gas. The contact pads 17 can be made to have an overall polygonal plane, a circular plane, an elliptical plane. The contact surface of the contact pad 17 may be formed to have a step. In detail, the inner part and the outer part of the groove boundary line HL formed in the 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 peripheral surface while forming the placement groove. In addition, the connection part 13 may be positioned in the placement groove, and the injection nozzles N1 and N2 may be disposed. By such an arrangement groove structure, the adhesion to the inner circumferential surface of the sewer pipe of the adhesive pad 17 may be increased.

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 a branch tube sealing pack according to the present invention.

Referring to FIG. 4, the branch pipe closure pack may be coupled to the robot arm, and the branch pipe closure pack may be coupled to the robot arm and applied to repair the sewer pipe.

The robot arm includes a rotating joint unit 45 coupled to the mobile robot described above; An adhesion arm 43 coupled to the rotation joint unit 45 by the rotation 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 the rotatable joint unit and disposed in a structure capable of acquiring images at various positions in the sewer pipe. The sealed tube 10 may have a cylindrical shape in which the inside extending upward may be sealed to inject gas, and a contact pad 17 may be coupled to one end of the sealed tube 10. The contact pad 17 may be made of a saddle-shaped curved structure, and the placement groove 44 may be formed on the circumferential surface of the portion where the sealing pad 10 is coupled. The placement groove 44 may be circular to enclose the inlet and the repair point of the branch pipe and may be formed to have a lower height than the outside of the contact surface. The nozzle block 153 on which the injection nozzle of the placement groove 44 is disposed may be disposed. At least one sealing gasket 411a or 411b having a closed curve shape may be disposed at a close contact portion forming a stepped surface around the placement groove 44. The branch pipe sealing pack is rotatable while being moved up and down by the robot arm, and can be moved to a repair point formed in the sewer pipe.

Branch tube seal packs can be combined with various repair devices, and the invention is not limited to the embodiments shown.

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

Referring to FIG. 5, for repairing the branch pipe portion of the sewer pipe, for example, the branch pipe sealing pack may be coupled to the mobile robot and the sealed tube may be inserted by moving the branch pipe (P51). The contact pad may be in close contact with the branch tube and the repair point as the sealing tube is inserted into the branch tube (P52). Air is injected from the outside and the sealed tube is expanded, so that the branch tube may be sealed (P53). When the branch pipe is sealed, it may be confirmed that the contact pad is in close contact with the inner circumferential surface of the sewer pipe (P54). The adhesion state may be confirmed, for example, by detecting a leak of gas or by the shape or pressure detection of the adhesion state of the adhesion pad. When the adhesion state of the contact pad is confirmed, the repair solution may be added to 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 can be separated from the repair point and the repair work can be completed.

The branch pipe sealing pack according to the present invention allows the branch pipe 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 maintenance work is stably and quickly performed by curing the injection agent in a sealed state. In addition, the repair device according to the present invention is to be applied to the repair of the sewer pipe connected to the branch pipe of various diameters by adjusting the radius of curvature or elasticity of the contact pad.

Although the present invention has been described in detail with reference to the presented embodiments, those skilled in the art may make various modifications and modifications without departing from the spirit of the present invention with reference to the presented embodiments. . The invention is not limited by the invention as such variations and modifications but only by the claims appended hereto.

10: sealed tube 11: telescopic body
12: shape retaining portion 13: connecting portion
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: close contact
44: placement groove 45: rotary joint unit
111: stretching guide strip 141: gas induction pipe
142: supply connection conduits 151, 152: injection tube
153: nozzle block 171: rigid core material
211: vehicle 231: connecting connector
241: fastening connector 242: rotary coupler
251: fixing pad 411a, 411b: sealing gasket
D: Sewer line HL: Groove boundary
N. N1, N2: injection nozzle PS: earth and sand
RP: Repair Point ST: Branch Pipe

Claims (1)

Consisting of an elastic body 11 that extends to a predetermined length and a shape-retaining portion 12 formed at one end of the elastic body 11 while being hollow, and expands along a circumferential surface when gas is injected therein. Tube 10;
A contact pad 17 having one end of the sealing tube 10 connected to the central portion and having a contact surface in contact with the peripheral surface of the sewer pipe, the contact pad 17 being made of a material having adhesion and elasticity;
Injection nozzles N1 and N2 formed on the contact surface of the contact pad 17;
Supply conduits 15a and 15b for supplying a repair liquid to the injection nozzles N1 and N2 from the outside; And
It includes a rigid core 171 disposed inside the contact pad 17,
And the contact surface has a radius of curvature corresponding to the inner circumferential surface of the sewage pipe so as to contact the inner circumferential surface of the sewer pipe to seal the circumferential portion of the repair point.

Images