KR20000019840A - Repair method of conduit line for supporting inner support ring and repair material - Google Patents

Abstract

PURPOSE: A method for reducing a repair cost is provided to have a good quality for repairing as having a simple repair work using a simple manual instrument by a worker enters in the conduit line as making a comparatively large conduit line as a subject. CONSTITUTION: In a repairing material of a conduit line(1), a cylindrical expansion and contraction part is put at a gap of a joint to be easily applied when the gap of an abnormal part of the joint of the conduit line is relatively large. Then the part of both ends of the expansion and contraction part is pushed by the strength of supporting of band shaped inner support rings(15) from two places in the state of overlapping as a part of a plastic plate(11) or a metal plate established in both conduit lines.

Description

Internal Bracing Support Pipe Repair and Repair

The present invention is simple to use only a hand tool for the case of a relatively large diameter 600mm that the worker can enter and repair inside the pipeline in the pipeline repair method, and the step or gap is relatively large in the abnormal part of the joint of the pipeline. The present invention relates to a repair method and a repair material that can reduce the cost of repairs and improve the quality of repairs and ultimately reduce maintenance costs by allowing repairs of abnormal parts of the pipes in the pipelines permanently and permanently. .

In order to cope with the problems such as soil contamination and leaking due to abnormalities of sewage pipes, water supply pipes, and electric wire pipes, such as sedimentation pipes, severe stepping and gaping in abnormal parts of joints of pipes. In the sewage pipe repair, the repairing method equipped with special and complicated equipment is used, or the method is used to repair the extent that a person enters the sewer pipe and adds cement mortar to the abnormal part without using the equipment.

In the case of using the equipment, it is conventionally intended for a relatively small diameter of 500 mm or less, in which a worker cannot enter the pipeline and cannot repair it. It is a method of repairing by injecting air pressure through remote control, one of which is curing liquid plastic, which is a repairing material, in a solid state for a predetermined time and attaching it to the inner wall of the pipeline, and the other method is to expand the repairing material to the inner wall of the pipeline. It is a method composed of two materials: a stainless sleeve having a protrusion in which a plurality of holes are drilled in the axial direction for fixing, and a rubber sheet wound in an expandable spiral wound and disposed inside the sleeve.

In case of using the above equipment, the two main methods are both impossible to repair in the case where the level or gap of the pipe joint is relatively large, and when the diameter of the pipe is 600 mm or more, the worker enters the pipeline and enters the cement mortar. In addition, it can be repaired, but the vehicle frequently passes through the ground road where the sewer pipes are buried, and vibration is applied, and as the time goes by, the additional mortar falls off or the additional mortar falls due to dry shrinkage of the sewer pipe. There was a problem with less.

The present invention is to provide a method for the maintenance work is simple and the quality is good, and the maintenance cost is reduced by using only a simple hand tools to enter the pipeline to the relatively large diameter pipeline to correct the problems of the conventional method as described above. The purpose is.

No identifier above

1 is a cross-sectional view of the cut portion to which the pipeline repair method is applied

2 is a cross-sectional view taken along the line A-A of FIG.

3 is a detailed view of part B of FIG. 2;

Figure 4 is a detailed view of the bidirectional spreading screw method of Figure 3 C portion

Figure 5 is a perspective view of the repair material when the step and the gap is relatively severe in the pipe of Figure 1 D portion

FIG. 6 is a perspective view of the cutout of FIG. 5.

7 is a cross-sectional view taken along the line E-E of FIG.

※ Explanation of symbols for main parts of drawing

1: Pipe line 3: Socket part

5: water-expandable rubber 7: quick-drying waterproof mortar

9: repair material 11: metal plate or plastic plate

13: part

14: rubber band or water-expandable rubber band

15: Internal Bracing (Stand or Band)

17: Bi-Directional Opening Screw (Turn Buckle)

19: driver 35: elastic part

37: rubber plate or rubber ring 39: wear and deflection prevention plate

39 ': Corrugated plate or corrugated pipe to prevent wear and sag

When described in detail with the accompanying drawings and exemplary drawings with respect to the configuration and operation of the present invention.

Normally, the abnormal part of the pipe line 1 is mainly made up of gaps or steps or breakage of the joints. If there is a gap in the joints, the water-expandable rubber 5 is inserted and the volume of the water-expanded rubber is multiplied when water leaks. It is spontaneously expanded to be an index, and on top of this, it is finished with a quick waterproof waterproof mortar (7) to enhance the index effect. Then, a repair material (9) was installed to cover the abnormal part properly so that the repair material could be firmly adhered to the inner wall of the pipeline so as to utilize the force held by the rod- or belt-shaped inner brace (15). . Here, the repairing material 9 has a cylindrical expansion and contraction portion 35 at the stepped portion or the gaped portion of the joint portion for easy application when the step or gaped portion of the pipe joint abnormality is relatively large. In order to fix the metal plate or plastic plate 11 installed in both pipelines on the inner wall of the pipeline in a state in which a part of the metal plate or plastic plate 11 is placed on the top and pressed, the rod or strip-shaped inner brace ring 15 is fixed. It was pushed by the holding force at two places, and two places, one at each end of each of the metal plate or plastic plate 11 installed in both pipelines, were pushed by the force held by the internal support ring 15 at a total of four places. It was made. In addition, the fixing method of the internal buttressing is composed of two methods of using only manual or hand tools and fixing by blowing air pressure.

As an example of using only hand tools, a metal plate or plastic plate is pushed in one direction with a screwdriver 19 by using a two-way open screw 17 at a work place inside the pipeline, and the internal support is pushed in both directions. Was firmly supported on the inner wall of the pipeline.

First, the expansion and contraction portion 35 of the repair material 9 may be cylindrically formed only by the rubber plate or the rubber ring 37, or used as a method of bonding the edge using an adhesive when repairing the edge in the field while the rubber plate is unfolded. Method, and secondly, in order to prevent abrasion and sagging of the rubber plate or the rubber ring 37, a wear plate and a sagging prevention plate 39 made of a metal plate, in particular stainless steel plate, in the upper part or the lower part of the conduit repair part are made of rubber plate or rubber. By being installed in the upper portion of the ring 37, the sewage or floating material flowing in the pipeline is in contact with the exposed surface which is a wear and deflection prevention plate to prevent wear of the rubber plate or rubber ring.

Another method may be to install a wear deflection prevention corrugation plate or corrugated pipe 39 'of metal, in particular stainless, in place of the partially installed wear and deflection prevention plate 39. Here, instead of the partial wear and deflection corrugated plate or corrugated pipe, a corrugated plate or corrugated pipe for preventing wear and deflection may be installed in a cylindrical shape as a whole.

On the other hand, in order to ensure that the water-retaining material 9 installed on the inner surface of the both sides of the expansion and contraction part 35 also satisfies the functions as the waterproofing and supporting plate at the same time, the metal plate, in particular, the stainless steel plate or the plastic plate 11, respectively, is waterproofing the steel plate and the plastic plate. The entire area is completely enclosed so as to have a function as a support plate, and both the metal plate and the plastic plate are continuously attached to the edges of the outer surface with rubber bands or water-expandable rubber bands 14 in two rows, so that the steel plate is waterproof or plastic. It has a function as an auxiliary material for waterproofing the plate, and on the axial outer edge of the inner surface of the metal plate or plastic plate The groove of the part 13 was cut out so that the outer portion of the inner brace ring 15 could be supported while being embedded, so that the strength of the inner brace ring was reinforced.

According to the present invention, when a worker directly enters a maintenance place in a pipeline for a diameter of 600 mm or more, the maintenance of the repair work is performed by using only a hand tool to improve the quality of the repair when the step or gap of the abnormal part is relatively large. This simple and cost effective maintenance is expected.

Claims (6)

In the inner surface repair method of a common pipe, especially a pipe with a large gap or gap between the joints, a water-resistant material such as water-expandable rubber inserted into the gap of the pipe joint, and a quick-waterproof mortar for leveling water and a bottom surface thereof It consists of the same overlay material, water-retaining material that is both waterproof and support plate on the upper part, and rod-shaped or belt-shaped internal bracing which is installed to firmly adhere the water-retaining material to the inner wall of the pipeline. Internal bracing support pipe repair method, characterized in that to act as a pushing force The method of claim 1, wherein by installing a bidirectional open screw on a portion of the internal buttressing, the internal buttressing is pushed in both directions so as to act as a force pushing the inner wall of the pipeline. In order to repair the pipeline where the step or gap of the abnormal part of the pipe joint is relatively large, the central part, which is the step or gap of the joint, has a cylindrical elastic part made of a material such as a rubber sheet or a rubber ring. A part of the metal plate or plastic plate installed inside is placed on the upper part and pressed to overlap. The metal plate has the waterproof function of the steel plate in order to satisfy the function as the waterproofing and supporting plate at the same time. The entire area is completely enclosed so as to have a function as a support plate, and a linear or water-resistant rubber band is attached to the outer edge of the metal plate or plastic plate to continuously attach a linear material such as a rubber band or a water-expandable rubber band. It has a function as a waterproof auxiliary material, The axially outer part of the plastic inner plate Repairing material characterized in that the inner portion of the inner support is reinforced by making the groove of the inner portion so that the outer portion of the inner support can be embedded [4] The wear and deflection of the metal part at the upper part or the lower part of the conduit repair part in order to prevent abrasion and sagging of the rubber sheet or rubber ring material provided at the center of the joint or the gap part of the joint. Repairing material characterized in that the prevention pipe is installed on the rubber plate or the upper portion of the rubber ring so that sewage or floating substances flowing in the pipeline contact the wear and deflection prevention plate to prevent wear of the rubber plate or the rubber ring. The repairing material according to claim 4, wherein the repairing material is made of a corrugated plate or corrugated pipe for preventing wear and deflection instead of a wear and deflection prevention plate made of a partially installed metal plate. The repair material according to claim 5, wherein the wear and deflection prevention corrugation plate or corrugated pipe is installed in a cylindrical shape instead of the partially installed wear and deflection prevention corrugation plate or corrugated pipe.