Pipeline repair method and pipeline replacement device

Abstract

The invention discloses a pipeline repairing method and a pipeline replacement device, and relates to the technical field of pipeline repairing. The pipeline repairing method comprises the steps that a first working pit and a second working pit are excavated in stratums on the front side and the rear side of a damaged part of a pipeline; the first pipe section and the third pipe section are taken out of the first working pit and the second working pit respectively; the guide rod continues to be dragged, so that the second pipe section continues to be cut through the pipeline replacement device, and the cut second pipe section is separated from the stratum; the periphery of the guide rod is sleeved with a replacement pipeline, and the replacement pipeline is connected to the pipeline replacement device; the guide rod is reversely dragged, so that the replacement pipeline replaces the second pipe section; and the front end and the rear end of the replacement pipeline communicate with the first pipe section and the second pipe section correspondingly. By means of the pipeline repairing method, under the condition that the damaged pipeline is not dug out, repairing of the damaged pipeline can be achieved, and the pipeline repairing method is simple and convenient.

Description

Technical Field

[0001] The present invention relates to the technical field of pipeline repair, and in particular to a pipeline repair method and a pipeline replacement device. Background Art

[0002] Pipelines are important infrastructure for urban water pollution prevention and control, urban drainage and flood control. Pipelines usually have a long service life, and they often break after a certain number of years of use. At present, the repair of damaged underground pipelines usually involves digging out the damaged underground pipelines. However, if pipelines buried under riverbeds or existing structures are damaged, it is difficult to dig out the pipelines in the area for replacement, and repairing the pipelines is relatively complicated. Summary of the invention

[0003] The main purpose of the present invention is to propose a pipeline repair method and a pipeline replacement device, which is aimed at solving the technical problem that pipelines buried under riverbeds or existing structures are damaged and it is difficult to dig out the pipelines in the area for replacement, which is a relatively complex repair problem.

[0004] To achieve the above object, the present invention provides a pipeline repair method, which comprises:

[0005] Excavating a first working pit and a second working pit in the strata at both sides of the front and rear of the damaged part of the pipeline;

[0006] Cut off the portion of the pipeline located in the first working pit and the portion located in the second working pit; wherein the portion of the pipeline located in the first working pit is the first pipe section, the portion of the pipeline located in the stratum between the first working pit and the second working pit is the second pipe section, and the portion of the pipeline located in the second working pit is the third pipe section;

[0007] Taking out the first pipe section and the third pipe section from the first working pit and the second working pit respectively;

[0008] Passing a guide rod from the first working pit through the second pipe section to the second working pit, and connecting a pipeline replacement device to the guide rod;

[0009] Drag the guide rod to make the pipe replacement device enter the stratum between the first working pit and the second working pit from the first working pit to cut the second pipe section;

[0010] Continue to drag the guide rod until the pipe replacement device leaves the ground formation from the second working pit, so as to continue to cut the second pipe section by the pipe replacement device, and peel the cut second pipe section from the ground formation;

[0011] Sleeve the replacement pipe on the outer circumference of the guide rod and connect it to the pipe replacement device;

[0012] Dragging the guide rod in the reverse direction can drive the pipe replacement device to move from the second working pit to the first working pit, so as to drive the replacement pipe to push the broken second pipe section out from the top of the second working pit, so that the replacement pipe replaces the second pipe section;

[0013] Connect the front and rear ends of the replacement pipe to the first pipe section and the second pipe section respectively. The pipe replacement device includes a main body, a cutting part and a stripping part;

[0014] The step of passing the guide rod from the first working pit through the second pipe section to the second working pit and connecting the pipeline replacement device to the guide rod comprises:

[0015] Passing the guide rod from the first working pit through the second pipe section to the second working pit, and connecting the pipeline replacement device to the main body;

[0016] The step of dragging the guide rod to enable the pipe replacement device to enter the stratum between the first working pit and the second working pit from the first working pit to cut the second pipe section comprises:

[0017] Drag the guide rod to make the cutting part enter the stratum between the first working pit and the second working pit from the first working pit to cut the second pipe section;

[0018] The step of continuing to drag the guide rod until the pipe replacement device leaves the stratum from the second working pit, so as to continue cutting the second pipe section by the pipe replacement device, and peeling the cut second pipe section from the stratum comprises:

[0019] Continue to drag the guide rod until the pipe replacement device leaves the stratum from the second working pit, so as to continue cutting the second pipe section through the cutting part, and peel the cut second pipe section from the stratum through the stripping part;

[0020] The step of sleeve-arranging the replacement pipe on the outer circumference of the guide rod and connecting it to the pipe replacement device comprises:

[0021] The replacement pipe is sleeved on the outer circumference of the guide rod and connected to the main body.

[0022] In one embodiment, the cutting portion includes a plurality of cutting heads detachably connected to the main body, and the plurality of cutting heads are evenly spaced and arranged on the main body around the axial direction of the guide rod.

[0023] In one embodiment, the stripping portion includes an annular stripping blade disc, and the stripping blade disc is detachably mounted on the main body.

[0024] In one embodiment, before the step of excavating the first working pit and the second working pit in the strata on both sides of the front and rear of the damaged part of the pipeline:

[0025] A reinforcement structure is provided in the stratum between the first working pit and the second working pit.

[0026] In one embodiment, the step of providing a reinforcement structure in the stratum between the first working pit and the second working pit comprises:

[0027] Digging a grouting hole downwards in the stratum between the first working pit and the second working pit;

[0028] Concrete slurry is sprayed into the grouting hole through the grouting pipe.

[0029] In one embodiment, a plurality of grouting holes are excavated downward in the stratum between the first working pit and the second working pit; wherein the plurality of grouting holes are arranged at intervals around the second pipe segment.

[0030] In one embodiment, the speed of dragging the guide rod is no more than 0.82 m / min.

[0031] In one embodiment, a traction sensor is further installed on the pipeline replacement device, and the traction sensor is used to monitor the traction force of the guide rod dragging the pipeline replacement device.

[0032] The present invention also provides a pipeline replacement device, which is applied to the above-mentioned pipeline repair method.

[0033] The technical solution of the present invention locates the damaged part of the pipeline first, and then digs the first working pit and the second working pit in the strata before and after the damaged part of the pipeline. The damaged pipeline can be cut off through the first working pit and the second working pit, and the underground pipeline is divided into a first pipe section, a second pipe section and a third pipe section. After the cut first pipe section and the third pipe section are taken out from the first working pit and the second working pit respectively, the damaged second pipe section can be replaced. A guide rod is inserted into the second pipe section, and the guide rod enters from the first working pit and exits from the second working pit. Then the pipeline replacement device is connected to the guide rod, and the pipeline replacement device can be driven to move with the guide rod by pulling the guide rod. In the process of the pipeline replacement device moving with the guide rod, the pipeline replacement device can break the second pipe section along its moving direction, and the pipeline replacement device can also peel off the broken second pipe section from the stratum. After the pipeline replacement device passes through the stratum between the first working pit and the second working pit and passes out of the second working pit, the second pipe segment is completely broken and completely separated from the stratum. Then the replacement pipe segment is connected to the pipeline replacement device, and the guide rod is pulled in the opposite direction. The replacement pipeline can enter the stratum between the first working pit and the second working pit with the pipe segment replacement device, and the second pipe segment is pushed out, thereby replacing the damaged second pipe segment. Then the first pipe segment and the third pipe segment are respectively reburied in the first working pit and the second working pit, and the first pipe segment and the second pipe segment are respectively connected to the front end and the rear end of the replacement pipe segment, so that the pipeline can be repaired. The pipeline repair method provided by the present invention can repair the damaged pipeline without digging out the damaged pipeline, which is simple and convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0035] Figure 1 A schematic flow chart of an embodiment of a pipeline repair method provided by the present invention;

[0036] Figure 2 A schematic structural diagram of an embodiment of a pipeline replacement method provided by the present invention connected to a guide rod.

[0037] Description of Figure Numbers:

[0038] 100. Pipe replacement device; 10. Main body; 20. Cutting part; 21. Cutting head; 30. Stripping part; 31. Stripping disc; 200. Guide rod.

[0039] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0040] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0041] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indication will also change accordingly.

[0042] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features limited to "first" and "second" may explicitly or implicitly include at least one of the features. In addition, if "and / or" or "and / or" appears in the full text, its meaning includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, solution B, or solutions that satisfy both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0043] Pipelines are important infrastructure for urban water pollution prevention and control, urban drainage and flood control. Pipelines usually have a long service life, and they often break after a certain number of years of use. At present, the repair of damaged underground pipelines usually involves digging out the damaged underground pipelines. However, if pipelines buried under riverbeds or existing structures are damaged, it is difficult to dig out the pipelines in the area for replacement, and repairing the pipelines is relatively complicated.

[0044] The invention provides a pipeline repair method and a pipeline replacement device.

[0045] See also Figure 1 to Figure 2 In one embodiment of the present invention, the pipeline repair method includes:

[0046] Step S100, excavating a first working pit and a second working pit in the strata at both sides of the front and rear of the damaged part of the pipeline;

[0047] Step S200, cutting off the portion of the pipeline located in the first working pit and the portion located in the second working pit; wherein the portion of the pipeline located in the first working pit is the first pipe section, the portion of the pipeline located in the stratum between the first working pit and the second working pit is the second pipe section, and the portion of the pipeline located in the second working pit is the third pipe section;

[0048] Step S300, taking out the first pipe section and the third pipe section from the first working pit and the second working pit respectively;

[0049] Step S400, passing a guide rod from the first working pit through the second pipe section to the second working pit, and connecting a pipeline replacement device to the guide rod;

[0050] Step S500, dragging the guide rod to enable the pipeline replacement device to enter the stratum between the first working pit and the second working pit from the first working pit to cut the second pipe segment;

[0051] Step S600, continue to drag the guide rod until the pipe replacement device leaves the stratum from the second working pit, so as to continue to cut the second pipe segment by the pipe replacement device, and peel the cut second pipe segment from the stratum;

[0052] Step S700, sleeve the replacement pipe on the outer circumference of the guide rod and connect it to the pipe replacement device;

[0053] Step S800, dragging the guide rod in the reverse direction can drive the pipe replacement device to move from the second working pit to the first working pit, so as to drive the replacement pipe to push the broken second pipe section out from the top of the second working pit, so that the replacement pipe replaces the second pipe section;

[0054] Step S900: Connect the front and rear ends of the replacement pipe to the first pipe section and the second pipe section respectively.

[0055] The technical solution of the present invention locates the damaged part of the pipeline first, and then digs the first working pit and the second working pit in the strata before and after the damaged part of the pipeline. The damaged pipeline can be cut off through the first working pit and the second working pit, and the underground pipeline is divided into a first pipe section, a second pipe section and a third pipe section. After the cut first pipe section and the third pipe section are taken out from the first working pit and the second working pit respectively, the damaged second pipe section can be replaced. A guide rod 200 is inserted into the second pipe section, and the guide rod 200 enters from the first working pit and exits from the second working pit. Then the pipeline replacement device 100 is connected to the guide rod 200, and the guide rod 200 can be pulled to drive the pipeline replacement device 100 to move with the guide rod 200. In the process of the pipeline replacement device 100 moving with the guide rod 200, the pipeline replacement device 100 can break the second pipe section along its moving direction, and the pipeline replacement device 100 can also peel off the broken second pipe section from the stratum. After the pipeline replacement device 100 passes through the stratum between the first working pit and the second working pit and passes out of the second working pit, the second pipe segment is completely broken and completely separated from the stratum. Then, the replacement pipe segment is connected to the pipeline replacement device 100, and the guide rod 200 is pulled in the opposite direction. The replacement pipeline can enter the stratum between the first working pit and the second working pit with the pipe segment replacement device, and the second pipe segment is pushed out, thereby replacing the damaged second pipe segment. Then, the first pipe segment and the third pipe segment are respectively reburied in the first working pit and the second working pit, and then the first pipe segment and the second pipe segment are respectively connected to the front end and the rear end of the replacement pipe segment, so that the pipeline can be repaired. The pipeline repair method provided by the present invention can repair the damaged pipeline without digging out the damaged pipeline, which is simple and convenient.

[0056] In one embodiment, a pipe replacement device includes a body, a cutting portion, and a stripping portion;

[0057] Step S400 includes:

[0058] Step S410, passing the guide rod from the first working pit through the second pipe section to the second working pit, and connecting the pipeline replacement device to the main body;

[0059] Step S500 includes:

[0060] Step S510, dragging the guide rod to make the cutting part enter the stratum between the first working pit and the second working pit from the first working pit to cut the second pipe segment;

[0061] Step S600 includes:

[0062] Step S610, continue to drag the guide rod until the pipe replacement device leaves the stratum from the second working pit, so as to continue cutting the second pipe segment through the cutting part, and peel the cut second pipe segment from the stratum through the peeling part;

[0063] Step S700 includes:

[0064] In step S710, a replacement pipe is sleeved on the outer periphery of the guide rod and connected to the main body.

[0065] Specifically, as shown in the figure, the pipe replacement device 100 includes a main body 10, a cutting part 20 and a stripping part 30. The second pipe segment is cut by the cutting part 20 to break the second pipe segment, and then the second pipe segment is stripped off by the stripping part 30. The cutting and stripping of the second pipe segment are performed independently, which can avoid mutual interference between the cutting and stripping of the second pipe segment and has higher reliability.

[0066] In one embodiment, the cutting portion 20 includes a plurality of cutting heads 21 detachably connected to the main body 10 , and the plurality of cutting heads 21 are evenly spaced and arranged on the main body 10 around the axial direction of the guide rod 200 .

[0067] Specifically, as shown in the figure, the second pipe segment can be uniformly cut into smaller structures by multiple cutting heads 21, so that the stripping unit 30 can more conveniently strip the cut second pipe segment. The multiple cutting heads 21 are detachably connected to the main body 10. After the second pipe segment is broken, the multiple cutting heads 21 are removed in the second working pit, and the replacement pipe segment can be connected to the main body 10.

[0068] In one embodiment, the stripping portion 30 includes an annular stripping blade disc 31 , and the stripping blade disc 31 is detachably mounted on the main body 10 .

[0069] Specifically, as shown in the figure, the stripping disc 31 is annular, and the annular stripping disc 31 can strip the second pipe section from the formation along the outer circumference of the second pipe section, so that the second pipe section can be pushed out more conveniently for replacement of the pipe, which is simple and convenient. The stripping disc 31 is detachably connected to the main body 10. After the second pipe section is broken, the stripping disc 31 is removed in the second working pit, and the replacement pipe section can be connected to the main body 10.

[0070] In one embodiment, before step S100:

[0071] Step A100: setting a reinforcement structure in the stratum between the first working pit and the second working pit.

[0072] Specifically, the stratum between the first working pit and the second working pit can be reinforced by setting a reinforcement structure for the stratum between the first working pit and the second working pit, thereby avoiding stratum instability between the first working pit and the second working pit when the second pipe section is broken and peeled off.

[0073] In one embodiment, step A100 includes:

[0074] Step A110, digging a grouting hole downward in the stratum between the first working pit and the second working pit;

[0075] Step A120, spraying concrete slurry into the grouting hole through the grouting pipe.

[0076] Furthermore, by digging grouting holes downward in the stratum between the first working pit and the second working pit and spraying concrete slurry into the grouting holes, the stratum between the first working pit and the second working pit can be reinforced after the concrete slurry solidifies, which is simple and convenient.

[0077] In one embodiment, a plurality of grouting holes are excavated downwardly in the stratum between the first working pit and the second working pit; wherein the plurality of grouting holes are arranged at intervals around the second pipe section.

[0078] Furthermore, a plurality of grouting holes are arranged at intervals around the second pipe section, so that the stratum around the second pipe section can be reinforced, and the reinforcement effect is better.

[0079] In one embodiment, the speed of dragging the guide rod 200 is no more than 0.82 m / min. The speed of dragging the guide rod 200 is no more than 0.82 m / min, which can avoid the pipeline replacement device 100 moving too fast and thus making it difficult to ensure the effectiveness of the pipeline replacement device 100 in rupturing the second pipe segment, and the reliability of rupturing the second pipe segment is higher.

[0080] In one embodiment, a traction sensor is also installed on the pipe replacement device 100, and the traction sensor is used to monitor the traction force of the guide rod 200 dragging the pipe replacement device 100. The traction sensor provided on the traction sensor can monitor the traction force of the guide rod 200 dragging the pipe replacement device 100, thereby avoiding damage to the pipe replacement device 100 due to excessive traction.

[0081] The present invention further proposes a pipeline replacement device 100, which is applied to the above-mentioned pipeline repair method. The pipeline repair method refers to the above-mentioned embodiment. Since the pipeline replacement device 100 adopts all the technical solutions of all the above-mentioned embodiments, it at least has all the beneficial effects brought by the technical solutions of the above-mentioned embodiments, which will not be described one by one here.

[0082] The above description is only an exemplary embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the technical concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A pipeline repair method, characterized in that: The pipeline repair method comprises: Excavating a first working pit and a second working pit in the strata at both sides of the front and rear of the damaged part of the pipeline; Cut off the portion of the pipeline located in the first working pit and the portion located in the second working pit; wherein the portion of the pipeline located in the first working pit is the first pipe section, the portion of the pipeline located in the stratum between the first working pit and the second working pit is the second pipe section, and the portion of the pipeline located in the second working pit is the third pipe section; Taking out the first pipe section and the third pipe section from the first working pit and the second working pit respectively; Passing a guide rod from the first working pit through the second pipe section to the second working pit, and connecting a pipeline replacement device to the guide rod; Drag the guide rod to make the pipe replacement device enter the stratum between the first working pit and the second working pit from the first working pit to cut the second pipe section; Continue to drag the guide rod until the pipe replacement device leaves the ground formation from the second working pit, so as to continue to cut the second pipe section by the pipe replacement device, and peel the cut second pipe section from the ground formation; Sleeve the replacement pipe on the outer circumference of the guide rod and connect it to the pipe replacement device; Dragging the guide rod in the reverse direction can drive the pipe replacement device to move from the second working pit to the first working pit, so as to drive the replacement pipe to push the broken second pipe section out from the top of the second working pit, so that the replacement pipe replaces the second pipe section; The front and rear ends of the replacement pipe are connected to the first pipe section and the second pipe section respectively.

2. The pipeline repair method according to claim 1, characterized in that: The pipeline replacement device includes a main body, a cutting portion and a stripping portion; The step of passing the guide rod from the first working pit through the second pipe section to the second working pit and connecting the pipeline replacement device to the guide rod comprises: Passing the guide rod from the first working pit through the second pipe section to the second working pit, and connecting the pipeline replacement device to the main body; The step of dragging the guide rod to enable the pipe replacement device to enter the stratum between the first working pit and the second working pit from the first working pit to cut the second pipe section comprises: Drag the guide rod to make the cutting part enter the stratum between the first working pit and the second working pit from the first working pit to cut the second pipe section; The step of continuing to drag the guide rod until the pipe replacement device leaves the stratum from the second working pit, so as to continue cutting the second pipe section by the pipe replacement device, and peeling the cut second pipe section from the stratum comprises: Continue to drag the guide rod until the pipe replacement device leaves the stratum from the second working pit, so as to continue cutting the second pipe section through the cutting part, and peel the cut second pipe section from the stratum through the stripping part; The step of sleeve-arranging the replacement pipe on the outer circumference of the guide rod and connecting it to the pipe replacement device comprises: The replacement pipe is sleeved on the outer circumference of the guide rod and connected to the main body.

3. The pipeline repair method according to claim 2, characterized in that: The cutting part comprises a plurality of cutting heads detachably connected to the main body, and the plurality of cutting heads are evenly arranged on the main body at axial intervals around the guide rod.

4. The pipeline repair method according to claim 2, characterized in that: The stripping portion includes an annular stripping blade disc, and the stripping blade disc is detachably mounted on the main body.

5. The pipeline repair method according to claim 1, characterized in that: Before the step of excavating the first working pit and the second working pit in the strata on both sides of the front and rear of the damaged part of the pipeline: A reinforcement structure is provided in the stratum between the first working pit and the second working pit.

6. The pipeline repair method according to claim 5, characterized in that: The step of providing a reinforcement structure in the stratum between the first working pit and the second working pit comprises: Digging a grouting hole downwards in the stratum between the first working pit and the second working pit; Concrete slurry is sprayed into the grouting hole through the grouting pipe.

7. The pipeline repair method according to claim 6, characterized in that: A plurality of grouting holes are excavated downward in the stratum between the first working pit and the second working pit; wherein the plurality of grouting holes are arranged at intervals around the second pipe section.

8. The pipeline repair method according to any one of claims 1 to 7, characterized in that: The speed of dragging the guide rod is no more than 0.82 m / min.

9. The pipeline repair method according to any one of claims 1 to 7, characterized in that: The pipeline replacement device is also equipped with a traction sensor, which is used to monitor the traction force of the guide rod dragging the pipeline replacement device.

10. A pipeline replacement device, characterized in that: The pipeline replacement device is applied to the pipeline repair method according to any one of claims 1 to 9.

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