KR100810555B1 - A steel pipe and a felt for repairing a drain pipe - Google Patents

Abstract

The present invention is the first metal pipe (50a) is expanded diameter of the metal pipe for sewage pipe repair;

A second metal tube 50b having a diameter expanded;

Several radial bends extending the entire length of the first and second metal pipes 50a and 50b to maintain the same diameter, and bending the first and second metal pipes 50a and 50b to be joined at a predetermined angle. A sewer pipe non-excavating repair metal tube including a strip 56;

Waterproofing and wear-resistant waterproofing layer 61 formed on the inner surface in contact with the metal tube surface,

A crack resistant reinforcing net 62 placed on the waterproof layer 61,

A porous nonwoven fabric 63, which is placed on the reinforcement net 62 and has a space for accommodating the cured resin 64, is integrally fused;

The coupling hole 51 is formed at the inner end of the position where the diameter of the metal pipe (50a50b) is coupled to be smaller, the fitting hole 52 that can be fitted to the fixing hook 54 and the coupling hole of the position to secure the expansion pipe ( 51 is formed in the sewage pipe non-excavation repair metal pipe and felt made to include a fixed tooth (53) for fixing the fixed neck (55).

Non Excavation, Sewage Pipe Repair, Felt, Metal Pipe

Description

A steel pipe and a felt for repairing a drain pipe}

1 is a block diagram for a general sewer repair;

2 is a vertical cross-sectional view of FIG.

3 is a perspective view of an expanded state of a general sewage pipe repair metal pipe,

4 is a perspective view of a state in which a sleeve is coupled to a sewage pipe repair metal pipe;

FIG. 5 is a cross-sectional view showing a state in which the sewage pipe is repaired in the I-I cross-sectional state of FIG. 4; FIG.

Figure 6 is a perspective view before assembling the metal tube of the present invention into a tube,

7 is a cross-sectional view of a state of assembling the pipe body of the present invention and the felt is bonded,

8 is an enlarged cross-sectional view of the main portion of the present invention;

9 is a cross-sectional view showing an example of the bent metal tube of the present invention;

10 is a perspective view showing another embodiment of the metal tube of the present invention;

FIG. 11 is a front view of a state in which the metal tube of FIG. 10 is coupled. FIG.

Explanation of symbols for the main parts of the drawings

1; Flexible pipe 2; Index 3, 3a; Metal pipe 4; Intermediate pipe 5; Repair pipe 10; Expander 11; Pneumatic cylinder 12; End pad 13; Support arm 20; Metal pipe 21; One end 22; The other end 23; base portion 24; Peripheral 25; Coupling 26; Fitting 30; Expander 31; Fixed shaft 32; Expansion 34; Valve 40; Sleeve 41; Cylinder 42; Projection 43, 44, 45; Projection 46; Packing 50; Metal pipe 50a; First Metal tube 50b; second metal tube 51; coupling hole 52; fitting hole 53; fixed tooth 53-1; fixed bent portion 54; fixed hook 54-1; fixed fitting 55; fixed neck 55-1; fitting guide 56; bending band 57; bending groove 60; felt 61; waterproof layer 62; reinforcing network 63; nonwoven 64; hardening resin

The present invention relates to a sewer pipe non-excavable repair metal pipe and felt, even if the sewer pipe is not horizontal, sewer pipe non-excavable repair metal pipe having a bending band so as to change the length direction so that the water can be repaired according to the angle of the sewer pipe And it relates to a felt covering a sewage pipe non-excavation repairing metal pipe having waterproof and wear resistance.

In general, underground pipelines, such as concrete pipes, PVC pipes, and conduits, have defects such as cracking, breakage, or separation of connections due to ageing of the pipe itself, subsidence of the underground ground, or variations in earth pressure from the ground. Will occur. Therefore, the waste water inside the pipeline flows out through the groove to contaminate the soil.

As a construction method for repairing underground pipelines, there are two types of excavation construction methods for excavating and repairing the ground, and non-excavation construction methods for repairing through manholes without digging the ground.

Among these, the excavation construction method requires enormous construction cost and long time, so it is not possible to immediately deal with the environmental pollution caused by sewage leakage, and it is necessary to excavate the surroundings for construction. Road erosion due to erosion and construction in traffic congestion area, especially when there is a risk of chronic traffic jams are not used well.

Non-excavated construction methods are classified into grouting or lining reinforcement methods, depending on the nature of the damaged part of the pipeline and the surrounding conditions.

The grouting indexing method is a method of hardening after ejecting a predetermined liquid repairing material from the repairing device to the damaged part for repairing the damaged part of the local pipeline.The grouting index method blocks the damaged part or the gap of the pipeline with the repairing material to prevent water from passing through. It is a technique. However, the above grouting exponential method is a water-repellent material is absorbed into the soil around the pipeline and absorbed in the soil around the pipeline and hardened over time, so that the water-proof feature is effective, but for the purpose of reinforcement, The reinforcement function lining the inner wall is uncertain.

On the other hand, the lining reinforcement method requires a reinforcement function when the damage portion is severe and the reinforcement function is required, for example, when the damage portion of the pipeline is widely distributed, or when the damage portion is formed while separating the entire inner diameter of the pipeline, a separate auxiliary material is provided in the pipeline. Lining on the side wall to reinforce the damage area over a wide range at once.

This lining reinforcement method impregnates the outer shell of synthetic resin materials such as polyethylene, polyurethane, nylon and the inner shell of felt made of nonwoven fabric or glass fiber material, and then ruptures or cracks after impregnation with a curing agent such as thermosetting epoxy resin. Attach to At this time, the equipment for attaching the felt is used unmanned probe with a camera, Utility Model Registration No. 369219 (non-excavation partial repair device for pipe) has been disclosed. Briefly describing the non-excavation partial repair device for the pipeline, the hollow housing has a hollow inside, a disk-shaped upper and lower plates fixed to the upper and lower ends of the housing and having a diameter larger than that of the housing, and fitted on the outer peripheral surface of the housing. It is made of a cylindrical rubber material hollowed out to have an expansion space so as to be inflated therein, and at one end is made of an expansion member formed with an air conditioner connector leading to the expansion space, the felt is wrapped around the outer surface of the expansion member and the inside of the pipeline The air is blown into the air conditioner connector to inflate the expansion member.

However, the lining reinforcement method as described above is required to replace other fibers because the glass fiber used as the inner material of the felt is harmful to the human body, which is the subject of regulation, and also the method of attaching the felt and the pipe that is in close contact with only the hardener. There is a need for a closer attachment method.

As another example, the sewage pipe repair method known as Korean Patent Registration No. 10-0551665 is a schematic diagram for repairing the sewer pipe of FIG. 1, and a resin expansion index on the inner wall of the water supply pipe 5, which is a sewer pipe as shown in FIG. 2 showing a vertical cross-sectional view of FIG. 1. The flexible tubular body 1 having the second (2) is placed therein, the flexible tubular body 1 is supported on the surface of the metallic tubular body 3, 3a whose diameter is expanded, and the metallic tubular bodies 3, 3a are pneumatic cylinders. The end side pad 12 which pushes so that diameter may become large by interlocking with the support arm 13 which operates by (11) is comprised.

However, this method has a problem that the initial use is easy to use the expansion tube (1), but the force to restore to the original acts to be released from the maintenance pipe (5) after construction, the metal tube (3, 3a) There is a problem in that the inclined portion to use a separate intermediate body (4).

Meanwhile, a method of winding a metal tube body and fixing the sleeve and the packing integrally so as to be easily moved to a repair pipe is known by Japanese Patent Application Laid-Open No. 6-193122, as shown in FIG. 21, a fitting hole 26 is formed at the other end, and several coupling pieces 25 are configured to be coupled to the fitting hole 26, and the one end 21 is wound so that the other end 22 is inwardly cylindrical. Then, the sleeve 40 is wound as shown in FIG. 4, and the packing having the protrusions 43 and 44 is placed between the protrusions 42 and 45 of the sleeve 40. Then, after applying the cured resin and put the tube with the expander 30 in the repair pipe (5) as shown in Figure 5 and the metal tube (20) in the expanded state so that the sleeve 40 to the inner surface of the repair pipe (5). Keep it. And if you open the valve 34 of the expander 30 to remove the air, only the expander is separated to be used in the next maintenance pipe.

However, in this manner, the sleeve 40 may be damaged such as one end or the other end, and the hardened resin directly contacts the metal pipe through the damaged part, causing corrosion of the metal pipe.

The present invention is to solve this, the object of the present invention is

It is to provide a metal tube that allows each metal tube to be bent in a bending band so that the metal tube can be easily acted on the twisted portion even when the repair tube is twisted.

Another object of the present invention is to provide a felt that acts to have a good waterproof and adhesive strength by forming a waterproof and abrasion-resistant waterproof layer in the area where the felt is in contact with the metal tube, and has a reinforcing network to maintain the strength.

To this end, the present invention is a diameter of the first metal pipe is expanded;

A second metal tube having a diameter expanded;

Extending the entire length of the first and second metal tubes to maintain the same diameter, and including several radially bent bands bending the first and second metal tubes to be joined at an angle;
The coupling hole is formed at the inner end of the position to be combined so that the diameter of the metal tube is smaller, the fixing hook can be fitted into the fitting hole, and formed in the coupling hole of the position to secure the expansion pipe to fix the fixed neck so as to secure It is to provide a sewer pipe non-excavative repair metal made.

In addition, it is used to wrap on the surface of the metal pipe whose diameter is adjusted for non-excavation repair of sewage pipes, and in the felt of the earth role to accommodate the hardener adhered to the inner wall of the sewer pipes,

A waterproof and wear resistant waterproof layer formed on the inner surface of the metal tube in contact with the surface;

A crack resistant reinforcing net placed on the waterproof layer,

A porous nonwoven fabric fused on the reinforcing net and having a space for accommodating the cured resin is integrally fused;
The waterproof layer is one of polyethylene, polypropylene, and polyvinyl chloride to provide a sewage pipe non-excavative repair felt configured to form a sheet by pressing together a reinforcing net and a nonwoven fabric melted in an extruder.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

6 is a perspective view before assembling the metal tube of the present invention into a tubular body, FIG. 7 is a cross-sectional view of a state in which the tubular body of the present invention is assembled and a felt is joined, and FIG. 8 is an enlarged cross-sectional view of the main part of the present invention.

The sewage pipe non-excavation type repair metal pipe of the present invention includes a first metal pipe (50a) is expanded diameter;

A second metal pipe 50b whose diameter is expanded to the metal pipe for sewage pipe repair;

Several radial bends extending the entire length of the first and second metal pipes 50a and 50b to maintain the same diameter, and bending the first and second metal pipes 50a and 50b to be joined at a predetermined angle. It is made to include a strip 56.

One end of each of the metal pipe (50a50b), the coupling hole 51 of the long hole, the other end of the fixed hook 54 having a wide width, the fixing hook 54 is the coupling hole 51 at one end of the metal pipe (50a50b) To form a fixed wood (55) to move along the expansion;

The coupling hole 51 is formed at the inner end of the position where the diameter of the metal pipe (50a50b) is coupled to be smaller, the fitting hole 52 that can be fitted to the fixing hook 54 and the coupling hole of the position to secure the expansion pipe ( 51 is formed to include a fixing tooth 53 for fixing the fixed neck (55).

The bending band 56 is formed with a plurality of bending grooves 57 to be bent in the longitudinal direction.

It is used to wrap the surface of the metal pipe 50 whose diameter is adjusted for non-excavation repair of sewage pipes, and it is felt as a site for accommodating a hardening agent adhered to the inner wall of the sewer pipes.

Felt 60 of the present invention is a waterproof and wear-resistant waterproof layer 61 formed on the inner surface in contact with the metal tube 50 surface;

A crack resistant reinforcing net 62 placed on the waterproof layer 61,

It is settled on the reinforcement net 62 and forms a configuration integrally fused to the porous nonwoven fabric 63 having a space for accommodating the cured resin (64).

The waterproof layer 61 is one of polyethylene, polypropylene, and polyvinyl chloride, and is configured to form a sheet by pressing together a reinforcing net and a nonwoven fabric melted in an extruder.

The present invention configured as described above is first provided with a metal tube 50 as shown in Figure 6, each metal tube (50a, 50b) is made to extend integrally through the bending band 56 in the longitudinal direction, the end of the fixed hook ( 54) to the outside of the coupling hole 51 of the other end to make the diameter smaller to fit the fitting hole 52 so that the fixing hook 54 comes to the inner diameter of the metal tube 50, and again through the fixed neck 55 portion The ball 51 is moved so as to maintain the desired initial diameter, and when the desired initial diameter is fixed, the fixed neck 55 comes between the fixed teeth 53 to be fixed first.

On the other hand, the felt of the present invention is placed on the ordinary nonwoven fabric (63) sheet to lay a reinforcing net 62 made of a fiber having a strong tensile strength, such as a conventional parachute, and reinforcing mesh (molten plastic extruded through an extruder, T-die, etc.) 62) is extruded to the surface of the non-woven fabric (63) is settled and passed through the roller is formed to a certain thickness to form a waterproof layer (61). In this case, due to the nature of the molten plastic, the waterproof layer 61 is completed in the form of integrally combining the reinforcing net 62 and the nonwoven fabric 63 in the molten state.

When the cured resin 64 is applied to the nonwoven fabric 60 surface of the felt 60 of the present invention, the cured resin 64 is permeated to the reinforcing mesh 62 and the waterproof layer interface due to the characteristics of the porous nonwoven fabric. In this state, the waterproof layer 61 is wrapped around the metal pipe 50 so that the water pipe 61 contacts the metal pipe 50 (the hardening resin 64 is exposed on the surface), and the felts on both sides of the metal pipe 50 so as not to loosen the felt 60. Join the packing 65 on the ring over 60. In this case, the felt 60 of the present invention corresponds to the metal tube 50, so that the plastic waterproof layer 61 is integrally coupled to the surface thereof, so that the nonwoven fabric 63 is damaged by the uneven surface of the metal tube 50 surface. This prevents the hardening resin 64 from penetrating into the metal tube 50, thereby preventing the hardening resin 64 from penetrating into the metal tube 50, causing the metal tube 50 to rust or corrode. It prevents that, and improves the durability of the metal tube 50.

When the tube is expanded using the expander shown in FIG. 5, the diameter of the metal tube 50 is increased, and the felt 60 is also loosened, and the diameter of the metal pipe 50 is increased to reach the inner surface of the repair tube 5 to cure the cured resin 64. do. Of course, when the air of the expander 30 is removed through the valve 34, the expander 30 is smaller and exits, and the metal tube 50 maintains the expanded diameter as it is. This is because the fixing hook 54 and the fixing neck 55 are fixed to the fixing teeth 53 to maintain the expanded diameter. Therefore, the felt 60 continuously acts in the form of applying a force toward the inner surface of the water conduit 5, and the felt 60 and the water conduit 5 are fixed to each other when the hardening resin 64 is hardened. Thus, the inner surface of the repair pipe 5 is integrally reinforced with the metal pipe 50 and the felt 60, thereby preventing leakage of the repair pipe 5, and the like.

In addition, the present invention forms a shape in which the bent strip 56 is radially connected between the two metal pipes 50a and 50b even when the repair pipe 5 or the like is bent or staggered. When the metal tube 50a50b is used to expand, the metal tube 50a50b can be bent or staggered in the shape of the water supply pipe 5 as shown in FIG. 9, so that the water can be easily repaired in any form. Therefore, as in the prior art, it is not necessary to separately provide a different type of metal pipe for each maintenance pipe. In addition, the bent strip 56 of the present invention forms a bent groove 57 in at least one of the middle, so that the bending band 56 connecting them during bending of both metal pipes (50a, 50b) acts to bend well.

Figure 10 is another embodiment of the metal tube of the present invention, one end of each metal tube (50a50b) formed side by side in the direction of the outer circumferential surface of the coupling hole 51 and the space between the coupling hole formed in the space between each coupling hole Forming a plurality of fitting holes 52;

The other end of each of the metal pipe (50a50b) is a fixed fitting protrusion (54 = 1) to be fitted to the fitting hole (52) when forming a tubular body, and protruding from both sides of the fixing fitting protrusion (54-1) the coupling hole (51) Forming fitting guide protrusions 55-1 moving along the coupling holes 51 in the state where they are respectively bent and then bent;

The portion forming the fitting hole 52 forms a fixed curved portion 53-1 that is curved toward the diameter of the metal tube.

Radial bending band 56 extending in the longitudinal direction from the middle of each of the metal tube (50a50b) has a configuration inclined at an angle with respect to the longitudinal direction of the metal tube.

When using this to make a preliminary tubular body in the initial state as shown in Figure 10, and then project the fitting guide projection (55-1) to the coupling hole 51 in the outward direction in the inner diameter direction and then bend out the coupling hole (51) Therefore, it moves to adjust the diameter. In this case, the initial diameter is reduced, and the felt 60 is wound on the outer surface of the metal tube 50 in the initial fixed state and expanded using the expander 30 shown in FIG. 5 while the felt 60 is fixed with the packing 65. While changing the position of the fixed fitting protrusion 54-1 fitted in the 52, the diameter is also acted to keep the diameter constant. Particularly, since the fixed curved portion 53-1 is formed at the fitting hole 51, the curved portion serves as a guide when expanding, and is easily fitted and fixed, and when combined, elastic force is generated to provide the effect of enhancing the binding force, thereby providing stable use. Function to be possible. In this case, since the bent strip 56 is inclined to form a predetermined angle with respect to the longitudinal direction of the pipe, the bending band 56 can be bent even with a small force during bending, so that the construction can be easily performed according to the shape of the repair pipe.

As described above, the present invention forms a structure in which the conduit is connected by a bending band connecting both metal tubes even when the conduit is inclined or twisted, so that both metal tubes can be easily fitted to the twisted portion, so that each metal tube is in the form of a conduit. It is possible to provide a metal pipe that can be used in conjunction with the deformation.

The present invention also provides a waterproof and abrasion-resistant waterproof layer in the area where the felt is in contact with the metal tube, and by embedding a reinforcing net to maintain the strength in the area that is in contact with the waterproof layer, it is wound around the metal tube when in use, the non-woven fabric is damaged to the water layer This prevents the hardening resin from contacting the metal tube, thereby preventing corrosion of the metal tube, improving durability, and providing a felt that acts as a waterproofing and adhesive strength because the waterproof layer acts as a base to harden the hardening resin together with the nonwoven fabric. do.

In addition, the present invention is easy to be construction is bent even with a small force when the bent belt connecting the metal tube inclined at a predetermined angle with respect to the longitudinal direction.

Claims (7)

delete In the metal pipe for sewer pipe repair, A first metal pipe 50a having a diameter expanded, A second metal tube 50b having a diameter expanded; Several radial bends extending the entire length of the first and second metal pipes 50a and 50b to maintain the same diameter, and bending the first and second metal pipes 50a and 50b to be joined at a predetermined angle. A strip 56; One end of each metal tube 50a50b has a long coupling hole 51 at the other end, and the other end has a large fixed hook 54 and a fixed hook 54 at one end of the gold tube 50a50b. To form a fixed neck (55) which moves so as to expand along; The coupling hole 51 is formed at the inner end of the position where the diameter of the metal pipe (50a50b) is coupled to be smaller, the fitting hole 52 that can be fitted to the fixing hook 54 and the coupling hole of the position to secure the expansion pipe ( The sewer pipe non-excavation repair metal pipe, characterized in that formed on the 51) comprises a fixed tooth (53) for fixing the fixed neck (55). 3. The sewer pipe non-excavation repairing metal pipe according to claim 2, wherein the bending band (56) is formed with several bending grooves (57) to be bent in the longitudinal direction. delete In the felt of the earth role used to wrap on the surface of the metal pipe of the diameter adjusted for non-excavation repair of sewage pipe and to receive the hardening agent adhered to the inner wall of the sewer pipe, Waterproofing and wear-resistant waterproofing layer 61 formed on the inner surface in contact with the metal tube surface, A crack resistant reinforcing net 62 placed on the waterproof layer 61, The porous nonwoven fabric 63 is placed on the reinforcing net 62 and has a space for accommodating the cured resin 64 is integrally fused; The waterproofing layer 61 is one of polyethylene, polypropylene, and polyvinyl chloride, and the sewage pipe ratio integrally fused with the porous nonwoven fabric is characterized in that the melted in the extruder is formed by pressing the reinforcing net and the nonwoven fabric together to form a sheet. Excavative repair felt. The coupling holes 51 of the slit-type long holes parallel to the outer circumferential surface direction and a plurality of fitting holes 52 formed at a predetermined outer circumferential surface interval in the space between the respective coupling holes at one end of each metal tube 50a50b. To form; The other end of each of the metal pipe (50a50b) is a fixed fitting projection 54-1 that is fitted to the fitting hole 52 when forming a tubular body, and protruding from both sides of the fixing fitting protrusion 54-1 to the coupling hole 51 Forming fitting guide protrusions 55-1 moving along the coupling holes 51 in the state where they are respectively bent and then bent; The fitting hole 52 is a portion of the sewer pipe non-excavation repairing metal pipe, characterized in that formed a fixed curved portion (53-1) is curved toward the diameter of the metal pipe increases. 7. The sewer pipe non-excavation repair according to claim 6, wherein the radially bending band 56 extending in the longitudinal direction from the middle of each metal pipe 50a50b is inclined at an angle with respect to the longitudinal direction of the metal pipe. Dragon metal tube.

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