Water supply pipeline repaired through pipeline material and repairing method

By using reserved plug blanks and leak-sealing plug blanks of the same material as the water supply pipe, the cracks in the water supply pipe are sealed and repaired, which solves the problems of high repair costs, long water outage time and water supply pollution in the existing technology, and achieves a fast, convenient and low-cost pipeline repair effect.

CN119878971APending Publication Date: 2025-04-25SHANGHAI GRANCOM TECH CO LTD
View PDF 0 Cites 0 Cited by

Patent Information

Application Number
CN202510178083.1
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-02-18
Publication Date
2025-04-25

AI Technical Summary

Technical Problem

In water supply pipelines, the prior art is difficult to repair pipeline cracks quickly and easily, resulting in high repair costs, long water outages, and may contaminate water supply.

Method used

Repair is achieved by opening conical plug holes on the surface of the pipe by using reserved plug blanks of the same material as the water supply pipe.

Benefits of technology

It has achieved rapid repair, small excavation area and low repair cost, and avoided water supply pollution and ensured water sanitation and safety.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure CN119878971A_ABST
    Figure CN119878971A_ABST
Patent Text Reader

Abstract

The invention belongs to the technical field of pipeline repair, and discloses a water supply pipeline repaired by using a pipeline material and a repair method. The repairing method comprises the following steps that S1, a plug blank made of the same material as the water supply pipeline is reserved; and S2, plug holes are formed in the surface of the water supply pipeline, the conical plug holes cover the damage cracks, and the smaller ends of the conical plug holes face the interior of the water supply pipeline. The application scene of the method is that repair is conducted in the water supply pipeline, the reserved plug blank made of the same material as the to-be-repaired pipeline is adopted to repair the to-be-repaired pipeline, and during repair, a conical plug hole with the small inner wall diameter and the large outer wall diameter is excavated in the crack damage position of the to-be-repaired pipeline; the reserved plug blank is made into the shape matched with the conical plug hole, the reserved plug blank and the conical plug hole are in interference fit, the gap between the reserved plug blank and the conical plug hole is sealed through glue pouring, and it is guaranteed that the reserved plug blank is completely consistent with the material structure and performance in the to-be-repaired pipeline.
Need to check novelty before this filing date? Find Prior Art

Description

Technical Field

[0001] The invention belongs to the technical field of pipeline repair, and in particular relates to a water supply pipeline repaired by using the pipeline's own materials and a repair method. Background Art

[0002] Pipeline repair refers to the use of various technologies to restore damaged and leaking pipelines to their normal function. The repair includes two technologies: external anti-corrosion layer repair and internal repair.

[0003] At present, there are many ways to repair pipelines. For example, according to the repair method, it is divided into excavation repair and non-excavation repair; according to the repair location, it is divided into local repair and overall repair; according to the repair purpose, it is divided into structural repair, such as repairing cracks and breaks; and functional repair, such as leakage and blockage.

[0004] There are many ways to achieve the above repairs, but a problem that plagues the pipeline repair industry is how to quickly and conveniently repair pipelines in water supply pipelines? The current method is that when crack-shaped damage occurs in the water supply pipeline, the crack damage needs to be cut off under the premise of water outage, and then repaired using repair devices such as half joints. However, for crack-shaped damage, the repair cost of using half joints is high, and the water outage time is long, which seriously affects the water supply. In addition, the water supply may be polluted due to the half joint repair. Summary of the invention

[0005] The present invention aims at solving the technical problems mentioned in the above background technology and adopts the following technical solutions to achieve the above problems:

[0006] A method for repairing a water supply pipe using the pipe's own material is used to repair damaged cracks on the surface of the water supply pipe, comprising the following steps:

[0007] S1, reserve a plug blank made of the same material as the water supply pipe;

[0008] S2. Opening a plug hole on the surface of the water supply pipe, the plug hole covers the damaged crack, and the end of the plug hole faces the inside of the water supply pipe;

[0009] S3, based on the plug hole, separating a leak-sealing plug blank that matches the plug hole from the plug blank, and using the leak-sealing plug blank to glue-seal the plug hole.

[0010] Preferably, the outer diameter of the leak-proof plug blank is larger than the inner diameter of the inner wall of the plug hole.

[0011] Preferably, the axial direction of the water supply pipe is consistent with the axial direction of the leak-sealing plug blank to ensure that the outer surface of the leak-sealing plug blank coincides with the outer surface of the pipe to be repaired.

[0012] Preferably, a cast iron pipe is sleeved on the outer side of the pipe to be repaired. Before performing steps S1, S2 and S3, an opening needs to be opened in the cast iron pipe, through which the leak-proof plug blank enters the cast iron pipe and has an interference fit with the plug hole.

[0013] Preferably, a rigid cover plate is used to seal the opening, and the glue is in contact with the rigid cover plate.

[0014] A water supply pipe repaired using the pipe's own materials, using the above method to repair the pipe, comprises a pipe to be repaired and a cast iron pipe sleeved outside the pipe to be repaired, the pipe to be repaired is provided with a plug hole, and the plug hole corresponds to the opening, the plug hole is interference fit with a leak-sealing plug blank made of the same material as the pipe to be repaired, and glue is also applied in the gap between the leak-sealing plug blank and the plug hole.

[0015] Preferably, the glue is located between the peripheral surface of the leak-sealing plug blank and the side wall of the plug hole and between the opening and the leak-sealing plug blank.

[0016] Preferably, the leak-proof plug blank passes through an open tapered plug hole.

[0017] Preferably, the plug hole is a straight-cylindrical or conical plug hole.

[0018] Furthermore, the plug hole is a conical plug hole, and the diameter of the conical plug hole increases along the direction from the inner wall to the outer wall of the water supply pipe, and the smaller end of the conical plug hole faces the inside of the water supply pipe.

[0019] Preferably, a rigid cover plate matching the cast iron pipe is also installed on the cast iron pipe, and the rigid cover plate blocks the opening.

[0020] Preferably, the rigid cover plate is riveted to the cast iron pipe.

[0021] Preferably, the rigid cover plate is connected to the cast iron pipe by welding.

[0022] Preferably, the rigid cover plate is riveted to the cast iron pipe, and the joint between the rigid cover plate and the cast iron pipe is connected by welding.

[0023] Preferably, a fixing hole is opened on the rigid cover plate, a rivet is riveted on the fixing hole, the rivet connects the rigid cover plate and the cast iron pipe, and the joint between the rigid cover plate and the cast iron pipe is connected by welding.

[0024] Preferably, the glue is also located between the rigid cover plate and the leak-proof plug blank, and between the cover plate and the outer surface of the cast iron pipe.

[0025] The beneficial effects of the present invention are:

[0026] (1) The application scenario of the present invention is repairing inside a water supply pipe. To this end, the present invention adopts a reserved plug blank made of the same material as the pipe to be repaired to repair the pipe to be repaired. During the repair, a plug hole is excavated at the crack damage on the pipe to be repaired, and the reserved plug blank is made into a shape matching the plug hole. Among them, the best effect of the present invention is that the plug hole is a conical plug hole, and the reserved plug blank is a conical reserved plug blank, and the two are interference fit, wherein the shape of the conical plug hole is a small inner wall diameter and a large outer wall diameter, and then the gap between the two is sealed with glue, so that the reserved plug blank and the pipe to be repaired are perfectly combined to ensure that the material structure and performance of the reserved plug blank are completely consistent with those in the pipe to be repaired. The above method can achieve rapid repair, and only excavation is performed near the crack damage of the pipe to be repaired, which has the advantages of small excavation area and low repair cost.

[0027] (2) When the reserved plug blank in the present invention is used to repair the pipeline to be repaired, the axial direction of the pipeline to be repaired must be consistent with the axial direction of the leak-sealing plug blank, and the outer surface of the leak-sealing plug blank must basically overlap with the outer surface of the pipeline to be repaired. At this time, the repair effect is better.

[0028] (3) When the reserved plug blank in the present invention is used to repair the pipe to be repaired, after the glue injection is completed, a rigid cover plate is installed on the outside of the cast iron pipe. The rigid cover plate restricts the repaired pipe and the leak-proof plug blank, so that a better repair effect can be achieved.

[0029] (4) When the reserved plugging blank in the present invention is used to repair the pipeline to be repaired, the leak-sealing plugging blank matches the plugging hole and can withstand the water flow pressure in the repair pipeline, that is, the leak-sealing plugging blank has pressure resistance, so that a better repair effect can be achieved. The best effect is when the plugging hole is a conical plugging hole, that is, the shape of the leak-sealing plugging blank is a cone.

[0030] (5) When the reserved plug blank in the present invention is used to repair the pipe to be repaired, the leak-sealing plug blank enters the repair hole along the edge of the pipe to be repaired in its radial direction, and the contact surface formed by the repair hole on the pipe to be repaired and the leak-sealing plug blank from the outside of the repair hole is isolated from the water flow in the pipe to be repaired, and pollution is strictly prevented from entering the gap in the pipe to be repaired and finally entering the pipe to be repaired, so that the water supply is sanitary and safe, and therefore has no impact on the water supply. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 This is a schematic diagram of the structure of the present invention in Example 1;

[0032] Figure 2 is a cross-sectional view of the present invention in Example 1;

[0033] Figure 3 It is a structural schematic diagram of the leak-proof plug blank in the present invention;

[0034] Figure 4 is a cross-sectional view of the pipe wall to be repaired in the present invention;

[0035] Figure 5 It is a schematic diagram of the structure of the cast iron pipeline in the present invention;

[0036] Figure 6 It is a structural schematic diagram of the pipeline to be repaired in the present invention;

[0037] Figure 7 This is a schematic diagram of the structure of the present invention in Example 2;

[0038] Figure 8 is a cross-sectional view of Example 2 of the present invention;

[0039] Fig. 9 It is a structural schematic diagram of the rigid cover plate in the present invention.

[0040] In the figure: pipeline to be repaired 1, cast iron pipeline 2, opening 3, conical plug hole 4, leak-proof plug blank 5, rigid cover plate 6, fixing hole 7. DETAILED DESCRIPTION

[0041] In order to make the technical means, creative features, objectives and effects of the present invention easier to understand, the present invention is further described below in conjunction with specific illustrations and embodiments.

[0042] The reserved plug blank made of the same material as the pipeline to be repaired described in the present invention means: during the first repair construction, a section of material of the same material as the pipeline to be repaired is reserved (it should be noted that the reserved material is an end of the pipeline pre-cut by our company and kept at the customer, and can be directly taken from the customer when used). This ensures that the repair material is completely consistent with the material structure and performance of the damaged pipeline; in addition, the reserved plug blank can be a pipe, a sheet, or other materials.

[0043] The present invention can realize the repair of the pipeline to be repaired, provided that the repair space and the hole opening depth are within the allowable range, and a hole can be opened in the damaged pipeline (i.e., the pipeline to be repaired) and repaired without digging out the entire pipeline in the damaged area of ​​the pipeline to be repaired. Therefore, compared with the method of excavating and repairing the entire pipeline, the present invention has the advantages of small excavation area and low repair cost.

[0044] The materials of the reserved plug blank and the pipe to be repaired referred to in the present invention are materials that are easily bonded with glue, and materials that are not easily bonded with glue are not applicable.

[0045] Example 1

[0046] like Figure 1-6 As shown, a water supply pipe repaired with the pipe's own material comprises a pipe to be repaired 1 and a cast iron pipe 2 sleeved outside the pipe to be repaired 1, an opening 3 is provided on the cast iron pipe 2 (the opening is mainly provided by cutting), and a plug hole is provided on the pipe to be repaired 1, wherein the present embodiment uses a conical plug hole 4 (the conical plug hole 4 is formed by not limited to digging out the cracked and damaged part of the repaired pipe 1), and the conical plug hole 4 corresponds to the opening 3, the conical plug hole 4 is interference fit with a leak-sealing plug blank 5 made of the same material as the pipe to be repaired 1, and glue is also applied in the gap between the leak-sealing plug blank 5 and the conical plug hole 4, and the leak-sealing plug blank 5 seals the conical plug hole 4 through the opening 3.

[0047] The glue is located between the circumferential surface of the leak-sealing plug blank 5 and the side wall of the tapered plug hole 4 and between the opening 3 and the leak-sealing plug blank 5 .

[0048] The repair process of the above pipeline is as follows:

[0049] First, the ground is excavated, and a plug blank made of the same material as the pipe to be repaired is taken as a plug blank, that is, a plug blank made of the same material as the water supply pipe is reserved;

[0050] Next, a conical plug hole 4 is opened on the surface of the water supply pipe, and the diameter of the conical plug hole 4 increases from the inner wall to the outer wall of the water supply pipe. The conical plug hole 4 covers the damage crack, and the smaller end of the conical plug hole 4 faces the inside of the water supply pipe; specifically, a hole is opened on the pipe to be repaired and chamfered, that is, a conical plug hole 4, and the conical plug hole 4 is opened as a conical plug hole with a small inner wall diameter and a large outer wall diameter;

[0051] Furthermore, based on the tapered plug hole 4, a leak-sealing plug blank 5 that matches the tapered plug hole 4 is separated from the plug blank, and the tapered plug hole 4 is sealed with glue by the leak-sealing plug blank 5. Specifically, the leak-sealing plug blank 5 is knocked into the opening 3 into the cast iron pipe 2 and into the tapered plug hole 4. The outer diameter of the leak-sealing plug blank 5 is larger than the inner diameter at the inner wall of the tapered plug hole 4, that is, an interference fit between the leak-sealing plug blank 5 and the tapered plug hole 4 is achieved; and when the leak-sealing plug blank 5 enters the tapered plug hole 4, it is necessary to ensure that the axial direction of the pipeline 1 to be repaired is consistent with the axial direction of the leak-sealing plug blank 5, and the outer surface of the leak-sealing plug blank 5 is substantially overlapped with the outer surface of the pipeline 1 to be repaired;

[0052] Stop knocking, and pour glue (the glue has a fast curing effect) between the outer surface of the leak-proof plug blank 5 and the side wall of the tapered plug hole 4. When pouring the glue, ensure that all internal gaps are completely filled with glue and there are no bubbles, and wait for the glue to cure (it should be noted that when pouring the glue, ensure that all internal gaps are completely filled with glue and there are no bubbles);

[0053] Finally, the repair work can be completed by plugging the cast iron pipe 2 and backfilling the ground.

[0054] Example 2

[0055] This embodiment is basically the same as Embodiment 1, except that Figure 7-9 As shown, a rigid cover plate 6 matching the cast iron pipe 2 is also installed on the cast iron pipe 2, the rigid cover plate 6 blocks the opening 3 and is fixed by gluing: specifically, the rigid cover plate 6 is riveted on the cast iron pipe 2 to block the opening 3, and the joint between the rigid cover plate 6 and the cast iron pipe 5 is connected by welding: more specifically, a fixing hole 7 is opened on the rigid cover plate 6, a rivet is riveted on the fixing hole 7, the rivet connects the rigid cover plate 6 and the cast iron pipe 2, and the joint between the rigid cover plate 6 and the cast iron pipe 2 is connected by welding;

[0056] The glue is also located between the rigid cover plate 6 and the leak-sealing plug blank 5, and between the rigid cover plate 6 and the outer surface of the cast iron pipe 2, that is, the glue is filled between the rigid cover plate 6, the opening 3, the leak-sealing plug blank 5 and the tapered plug hole 4, and is required to be free of bubbles; specifically: it is necessary to ensure that the amount of glue is greater than the amount required between the opening 3, the leak-sealing plug blank 5 and the tapered plug hole 4, so that when the rigid cover plate 6 is applied, the space between the rigid cover plate 6 and the leak-sealing plug blank 5 and between the rigid cover plate 6 and the outer surface of the cast iron pipe 2 are completely filled with glue without bubbles, or the glue can be evenly applied on the side of the rigid cover plate 5 that opens downward, so that the space between the rigid cover plate 6 and the outer surface of the cast iron pipe 2 is completely filled with glue).

[0057] Example 3

[0058] This embodiment is basically the same as Embodiment 2, except that the rigid cover plate 6 in this embodiment is riveted to the cast iron pipe 2 to block the opening 3 .

[0059] Example 4

[0060] This embodiment is basically the same as Embodiment 2, except that the rigid cover plate 6 in this embodiment is connected to the cast iron pipe 2 by welding to block the opening 3 .

[0061] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A method for repairing a water supply pipeline using the pipeline's own material, used to repair damage and cracks on the surface of the water supply pipeline, characterized in that: The following steps are involved: S1, reserve a plug blank made of the same material as the water supply pipe; S2. Opening a plug hole on the surface of the water supply pipe, the plug hole covers the damaged crack, and the end of the plug hole faces the inside of the water supply pipe; S3, based on the plug hole, separating a leak-sealing plug blank that matches the plug hole from the plug blank, and using the leak-sealing plug blank to glue-seal the plug hole.

2. The repair method according to claim 1, characterized in that: The outer diameter of the leak-proof plug blank is greater than the inner diameter of the inner wall of the plug hole.

3. The repair method according to claim 2, characterized in that: The outer side of the pipe to be repaired is sleeved with a cast iron pipe. Before performing steps S1, S2 and S3, an opening needs to be opened in the cast iron pipe, through which the leak-proof plug blank enters the cast iron pipe and has an interference fit with the plug hole.

4. The repair method according to claim 3, characterized in that: After completing step S3, the opening is sealed with a rigid cover plate, and the glue is in contact with the rigid cover plate.

5. A water supply pipeline repaired by using the pipeline's own materials, using the repair method according to any one of claims 1 to 4 to repair the water supply pipeline, characterized in that: It includes a pipe to be repaired and a cast iron pipe sleeved outside the pipe to be repaired, the pipe to be repaired is provided with a plug hole, and the plug hole corresponds to the opening, the plug hole is interference fit with a leak-sealing plug blank made of the same material as the pipe to be repaired, and glue is also applied in the gap between the leak-sealing plug blank and the plug hole.

6. The water supply pipeline according to claim 5, characterized in that: The leak-sealing plug blank seals the plug hole through the opening.

7. The water supply pipeline according to claim 6, characterized in that: The cast iron pipe is also provided with a rigid cover plate matching the cast iron pipe, and the rigid cover plate blocks the opening.

8. The water supply pipeline according to claim 6, characterized in that: The rigid cover plate is riveted to the cast iron pipe.

9. The water supply pipeline according to claim 6, characterized in that: The rigid cover plate is connected to the cast iron pipe by welding.

10. The water supply pipeline according to claim 6, characterized in that: The rigid cover plate is riveted to the cast iron pipe, and the joint between the rigid cover plate and the cast iron pipe is connected by welding.