Temporary plugging device for connection of new and old municipal rainwater pipelines and construction method of temporary plugging device

Abstract

The invention discloses a temporary plugging device for connection of new and old municipal rainwater pipelines and a construction method thereof.The temporary plugging device comprises an expansion air bag, an upstream pipeline and a downstream pipeline which are plugged in a connection well, and the end, away from the connection well, of the upstream pipeline is connected with an upstream well; one end, far away from the access well, of the downstream pipeline is connected with a downstream well, and a newly-built pipeline is connected to the access well; the first flow guide pipe is connected to the upstream well and the downstream well; the second flow guide pipe is connected to the access well and the downstream well; the delivery pumps are mounted on the first flow guide pipe and the second flow guide pipe respectively; the steel sheet piles are arranged on the two opposite sides of the newly-built pipeline in a driving mode. The problem that the use function of an original pipeline cannot be guaranteed when a traditional plugging mode is adopted for connection of new and old municipal rainwater pipelines is solved.

Description

Technical Field

[0001] The present invention relates to the technical field of building construction, and particularly relates to a temporary plugging device for connecting new and old municipal rainwater pipelines and a construction method thereof. Background Art

[0002] The municipal road drainage system is one of the important facilities for the normal use of urban municipal facilities, and ensuring its construction quality is crucial. Sometimes it is necessary to connect a newly built rainwater pipeline to an existing main municipal rainwater pipeline to ensure the smooth discharge of rainwater and avoid waterlogging and water accumulation.

[0003] When connecting municipal rainwater pipelines, careful planning and design are required. First, a detailed survey and analysis of the existing rainwater pipeline layout and flow rate should be carried out to determine the connection location and method. Usually, the construction area is first enclosed and warned to ensure construction safety. Then operations such as excavation, pipeline laying, connection, and fixation are carried out. After the connection is completed, strict testing and acceptance are also required. For example, a water tightness test is carried out to check whether there is any leakage at the connection. If problems are found, timely repair and rectification are needed.

[0004] Traditional plugging uses brick plugging in pipelines and single airbag plugging. The plugging effect is good and can withstand a certain water pressure, but the construction time is long and the use function of the original pipeline system cannot be guaranteed. Summary of the Invention

[0005] To overcome the defects of the prior art, the present invention provides a temporary plugging device for connecting new and old municipal rainwater pipelines and a construction method thereof to solve the problem that the traditional plugging method for connecting new and old municipal rainwater pipelines cannot guarantee the use function of the original pipeline.

[0006] To achieve the above object, a temporary plugging device for connecting new and old municipal rainwater pipelines is provided, including:

[0007] An expansion airbag, plugging the upstream pipeline and the downstream pipeline of the access well. One end of the upstream pipeline away from the access well is connected to an upstream well, one end of the downstream pipeline away from the access well is connected to a downstream well, and a new pipeline is connected to the access well;

[0008] A first diversion pipe, connected between the upstream well and the downstream well;

[0009] A second diversion pipe, connected between the access well and the downstream well;

[0010] A delivery pump, with the delivery pump installed on the first diversion pipe and the second diversion pipe respectively;

[0011] Steel sheet piles, with steel sheet piles driven on opposite sides of the new pipeline.

[0012] Further, the expansion airbag includes:

[0013] An airbag body disposed in the upstream pipeline or the downstream pipeline, the airbag body having opposite first and second sides;

[0014] An elastic arc plate connected to the first side of the airbag body, the opposite ends of the elastic arc plate in the arc-forming direction being connected with length-adjustable electric telescopic members. After the electric telescopic members are extended, the opposite ends of the elastic arc plate respectively press against the opposite side walls of the upstream pipeline or the downstream pipeline;

[0015] A sealing cover plate connected to the second side of the airbag body, the sealing cover plate fitting to the end face of the upstream pipeline or the downstream pipeline. After the opposite ends of the elastic arc plate press against the pipe walls, the airbag body is inflated to block in the upstream pipeline or the downstream pipeline, and at the same time, the airbag body is tied to the sealing cover plate to make the sealing cover plate tightly press against the end face.

[0016] Further, a plugging boss is formed on the inner side of the sealing cover plate, and the plugging boss is embedded in the pipe orifice of the upstream pipeline or the downstream pipeline.

[0017] Further, the electric telescopic member is an electric hydraulic push rod.

[0018] Further, the outer arc surface of the elastic arc plate is connected to the first side of the airbag body.

[0019] The present invention provides a construction method for a temporary plugging device for connecting new and old municipal rainwater pipelines, including the following steps:

[0020] Place expansion airbags in the upstream pipeline and the downstream pipeline of the access well respectively to block the upstream pipeline and the downstream pipeline;

[0021] Connect a first diversion pipe between the upstream well and the downstream well, and drain the rainwater in the upstream well into the downstream well through the first diversion pipe;

[0022] Connect a second diversion pipe between the access well and the downstream well, and drain the rainwater in the access well into the downstream well through the second diversion pipe;

[0023] Drive steel sheet piles on the opposite sides of the construction position of the new pipeline;

[0024] Excavate the soil between the two steel sheet piles and lay the new pipeline, so that the new pipeline is connected to the access well.

[0025] The beneficial effects of the present invention are as follows. The temporary plugging device for connecting new and old municipal rainwater pipelines of the present invention is used for connecting new and old pipelines in municipal engineering, ensuring that the positions and elevations of the new and old pipelines are accurate, capable of performing inspections such as water tightness tests, and at the same time ensuring the normal functions of existing municipal rainwater pipelines without affecting the use functions of the existing pipelines.

[0026] The plugging of the temporary plugging device for connecting new and old municipal rainwater pipelines of the present invention can ensure the safety of operators.

[0027] The sealing and fixing of the interface of the temporary plugging device for connecting new and old municipal rainwater pipelines of the present invention are good, ensuring that the rainwater pipeline does not leak.

[0028] The temporary plugging device for connecting new and old municipal rainwater pipelines of the present invention can perform inspections such as water tightness tests to ensure that the connection quality meets the requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] By reading the detailed description of the non-limiting embodiments with reference to the following drawings, other features, objects, and advantages of the present application will become more apparent:

[0030] Figure 1 FIG. is a schematic structural diagram of the temporary plugging device for connecting new and old municipal rainwater pipelines according to an embodiment of the present invention.

[0031] Figure 2 FIG. is a schematic diagram of the non-inflated state of the expansion airbag according to an embodiment of the present invention.

[0032] Figure 3 FIG. is a schematic structural diagram of the inflated state of the expansion airbag according to an embodiment of the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0033] The following further describes the present application in detail with reference to the drawings and embodiments. It can be understood that the specific embodiments described herein are only used to explain the related invention, rather than limiting the invention. Additionally, it should be noted that for the sake of description, only the parts related to the invention are shown in the drawings.

[0034] It should be noted that, without conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present application will be described in detail below with reference to the drawings and embodiments.

[0035] Referring to Figures 1 to 3 as shown, the present invention provides a temporary plugging device for connecting new and old municipal rainwater pipelines, including: an expansion airbag 1, a first diversion pipe 2, a second diversion pipe 3, a delivery pump 4, and a steel sheet pile 5.

[0036] Referring to Figure 1As shown, the access well is connected to the newly built pipeline, enabling the newly built pipeline to access the existing municipal rainwater pipeline. The access well is connected to the upstream well through the upstream pipeline. The access well is connected to the downstream well through the downstream pipeline. One end of the upstream pipeline far from the access well 6 is connected to the upstream well 7. One end of the downstream pipeline far from the access well 6 is connected to the downstream well 8.

[0037] The expansion airbag 1 is blocked in the upstream pipeline and the downstream pipeline of the access well 6. The expansion airbag 1 is blocked in the pipe orifice at one end of the upstream pipeline of the access well 6 far from the access well. The expansion airbag 1 is blocked in the pipe orifice at one end of the downstream pipeline of the access well 6 far from the access well. The rainwater flow is intercepted by the two blocking airbags.

[0038] The first diversion pipe 2 is connected between the upstream well 7 and the downstream well 8. The second diversion pipe 3 is connected between the access well 6 and the downstream well 8. Delivery pumps 4 are respectively installed on the first diversion pipe 2 and the second diversion pipe 3.

[0039] After the rainwater flow is intercepted, in order to ensure the sewage discharge function of the existing municipal rainwater pipeline, normal drainage of the existing municipal rainwater pipeline is achieved through the transfer of the first diversion pipe. The normal function of the existing municipal rainwater pipeline is achieved by using the first diversion pipe for transfer.

[0040] The rainwater in the access well is drained into the downstream well and discharged away by using the second diversion pipe to facilitate the construction of the newly built pipeline.

[0041] Steel sheet piles 5 are driven on the opposite sides of the newly built pipeline 9. After the steel sheet piles are driven, earth excavation is carried out and the newly built pipeline is laid.

[0042] The temporary plugging device for connecting new and old municipal rainwater pipelines of the present invention is used for connecting new and old pipelines in municipal engineering, ensuring the accurate position and elevation of the new and old pipelines, capable of performing tests such as water tightness tests, and at the same time ensuring the normal function of the existing municipal rainwater pipeline without affecting the use function of the existing pipeline.

[0043] When connecting municipal rainwater pipelines, careful planning and design are required. First, a detailed survey and analysis of the layout and flow of the existing rainwater pipelines are carried out to determine the connection position and method. Usually, the construction area is fenced and warned first to ensure construction safety. Then operations such as excavation, pipeline laying, connection, and fixation are carried out. After the connection is completed, strict testing and acceptance are also required. For example, a water tightness test is carried out to check whether there is any leakage at the connection. If problems are found, timely repair and rectification are required.

[0044] As a preferred embodiment, the expansion airbag 1 includes: an airbag body 11, an elastic arc plate 12, and a sealing cover plate 13.

[0045] The airbag body 11 is disposed in the upstream pipeline or the downstream pipeline. The airbag body 11 has opposite first and second sides.

[0046] The elastic arc plate 12 is connected to the first side of the airbag body 11. Electric telescopic members 121 with adjustable lengths are connected to opposite ends of the elastic arc plate 12 in the arc-forming direction.

[0047] After the electric telescopic members 121 extend, opposite ends of the elastic arc plate 12 respectively press against the pipe walls on opposite sides of the upstream pipeline or the downstream pipeline.

[0048] The sealing cover plate 13 is connected to the second side of the airbag body 11. The sealing cover plate 13 fits against the end face of the upstream pipeline or the downstream pipeline.

[0049] After opposite ends of the elastic arc plate 12 press against the pipe walls, the airbag body 11 is inflated to block the upstream pipeline or the downstream pipeline. At the same time, the airbag body 11 is tied to the sealing cover plate 13 to make the sealing cover plate 13 tightly press against the end face.

[0050] In this embodiment, a plugging boss 131 is formed on the inner side of the sealing cover plate 13. The plugging boss 131 is embedded in the pipe orifice of the upstream pipeline or the downstream pipeline. The plugging boss is circular. The size of the plugging boss is adapted to the inner diameter size of the upstream pipeline or the downstream pipeline.

[0051] In this embodiment, the electric telescopic member 121 is an electric hydraulic push rod.

[0052] In this embodiment, the outer arc surface of the elastic arc plate 12 is connected to the first side of the airbag body 11.

[0053] The present invention provides a construction method for a temporary plugging device for connecting new and old municipal rainwater pipelines, including the following steps:

[0054] S1. Inflatable airbags 1 are respectively placed in the upstream pipeline and the downstream pipeline of the access well 6 to plug the upstream pipeline and the downstream pipeline.

[0055] Specifically, the inflatable airbags are respectively placed in the upstream pipeline and the downstream pipeline. During the process of placing the inflatable airbags, the inflatable airbags are stretched to maintain a large distance between the sealing cover plate and the elastic arc plate.

[0056] By the extension of the electric hydraulic push rod, opposite ends of the elastic arc plate 12 respectively press against the pipe walls on opposite sides of the upstream pipeline or the downstream pipeline, so as to fix the position of the first side of the airbag body.

[0057] After that, inflate the airbag body through the air nozzle of the airbag body to make it expand. Utilize the pulling force generated by the expansion and contraction of the airbag body to make the sealing cover plate closely fit on the end face of the pipeline, thereby enabling the airbag body to block the pipeline, and at the same time ensuring that the sealing cover plate tightly blocks the pipeline opening.

[0058] S2. Connect the first diversion pipe 2 between the upstream well 7 and the downstream well 8, and drain the rainwater in the upstream well 7 into the downstream well 8 through the first diversion pipe 2.

[0059] S3. Connect the second diversion pipe 3 between the access well 6 and the downstream well 8, and drain the rainwater in the access well 6 into the downstream well 8 through the second diversion pipe 3.

[0060] S4. Drive steel sheet piles 5 on the opposite sides of the construction position of the new pipeline 9.

[0061] S5. Excavate the soil between the two steel sheet piles 5 and lay the new pipeline 9, so that the new pipeline 9 is connected to the access well 6.

[0062] The temporary plugging device for connecting new and old municipal rainwater pipelines of the present invention will use an expansion airbag to inflate and block the upstream well and downstream well of the original pipeline before construction. A set of diesel generator sets will be used to generate electricity in the access well to supply the transfer pump for pumping water, and at the same time, check the plugging effect of the plugging pipe sections upstream and downstream of the access well chamber.

[0063] In the case of good plugging effect, to ensure the normal function of the original pipeline, pump the water in the upstream plugging well chamber of the original pipeline and drain it into the downstream plugging inspection well to ensure the normal use of the original pipeline.

[0064] To ensure that the water storage in the access well chamber is small, the original generator set and water pump are used for standby pumping.

[0065] Excavate, lay pipes, conduct a water tightness test, and backfill the new pipeline.

[0066] After the backfill is completed, remove the upstream and downstream plugging balloons to restore the smoothness of the original pipeline.

[0067] The temporary plugging device for connecting new and old municipal rainwater pipelines of the present invention plugs the existing municipal rainwater pipeline, which can ensure that the positions and elevations of the new and old pipes are accurate and error-free, and avoid deviations.

[0068] The plugging of the temporary plugging device for connecting new and old municipal rainwater pipelines of the present invention can ensure the safety of the operators.

[0069] The sealing and fixing of the interface of the temporary plugging device for connecting new and old municipal rainwater pipelines of the present invention are good, ensuring that the rainwater pipeline does not leak.

[0070] The temporary plugging device for connecting new and old municipal rainwater pipelines of the present invention can ensure the normal operation of the municipal pipeline system and effectively solve the drainage problem in this area.

[0071] The temporary plugging device for connecting new and old municipal rainwater pipelines of the present invention can conduct inspections such as water tightness tests to ensure that the connection quality meets the requirements.

[0072] The above description is only the preferred embodiment of the present application and the explanation of the technical principles applied. Those skilled in the art should understand that the scope of the invention involved in the present application is not limited to the technical solution formed by the specific combination of the above technical features, but should also cover other technical solutions formed by any combination of the above technical features or their equivalent features without departing from the inventive concept. For example, the technical solutions formed by mutually replacing the above features with the technical features (but not limited to) having similar functions disclosed in the present application.

Claims

1. A temporary plugging device for connecting new and old municipal rainwater pipelines, characterized in that Including: An inflatable airbag, which is blocked in the upstream pipeline and the downstream pipeline of the access well. One end of the upstream pipeline far away from the access well is connected to an upstream well, and one end of the downstream pipeline far away from the access well is connected to a downstream well. A new pipeline is connected to the access well; A first diversion pipe, which is connected to the upstream well and the downstream well; A second diversion pipe, which is connected to the access well and the downstream well; A delivery pump, and the delivery pump is respectively installed on the first diversion pipe and the second diversion pipe; Steel sheet piles, and steel sheet piles are driven on the opposite sides of the new pipeline.

2. The temporary plugging device for connecting new and old municipal rainwater pipelines according to claim 1, characterized in that, The inflatable airbag includes: An airbag body disposed in the upstream pipeline or the downstream pipeline, and the airbag body has opposite first side and second side; An elastic arc plate, which is connected to the first side of the airbag body. Opposite ends in the arc direction of the elastic arc plate are connected with length-adjustable electric telescopic members. After the electric telescopic members extend, opposite ends of the elastic arc plate respectively press against the opposite side pipe walls of the upstream pipeline or the downstream pipeline; A sealing cover plate, which is connected to the second side of the airbag body. The sealing cover plate fits against the end face of the upstream pipeline or the downstream pipeline. After the opposite ends of the elastic arc plate press against the pipe walls, the airbag body is inflated to block in the upstream pipeline or the downstream pipeline. At the same time, the airbag body pulls on the sealing cover plate to make the sealing cover plate tightly press against the end face.

3. The temporary plugging device for connecting new and old municipal rainwater pipelines according to claim 2, characterized in that, A plugging boss is formed on the inner side of the sealing cover plate, and the plugging boss is embedded in the pipe orifice of the upstream pipeline or the downstream pipeline.

4. The temporary plugging device for connecting new and old municipal rainwater pipelines according to claim 2, characterized in that The electric telescopic member is an electric hydraulic push rod.

5. The temporary plugging device for connecting new and old municipal rainwater pipelines according to claim 2, characterized in that, The outer arc surface of the elastic arc plate is connected to the first side of the airbag body.

6. A construction method of a temporary plugging device for connecting new and old municipal rainwater pipelines according to any one of claims 1 to 5, characterized in that, Including the following steps: Place inflatable airbags in the upstream pipeline and the downstream pipeline of the access well respectively to block the upstream pipeline and the downstream pipeline; Connect the first diversion pipe between the upstream well and the downstream well, and drain the rainwater in the upstream well into the downstream well through the first diversion pipe; Connect the second diversion pipe between the access well and the downstream well, and drain the rainwater in the access well into the downstream well through the second diversion pipe; Drive steel sheet piles on the opposite sides of the construction position of the new pipeline; Excavate the soil between the two steel sheet piles and lay the new pipeline so that the new pipeline is connected to the access well.

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