Plugging device of water taking pipe and operation method of plugging device

Abstract

The invention relates to a plugging device of a water taking pipe and an operation method of the plugging device. The method is suitable for the technical field of water conservancy and hydropower engineering. The technical problem to be solved by the invention is to provide the plugging device of the water intake pipe and the operation method thereof. According to the technical scheme, the plugging device of the water taking pipe comprises a plugging body structure, a sealing cavity is formed in the plugging body structure, and the plugging body structure can be plugged into the reservoir end of the water taking pipe to achieve plugging; the pressure adjusting assembly is arranged on the plugging body structure, and the pressure adjusting assembly can adjust water pressure balance between the reservoir end of the water taking pipe and the interior of the water taking pipe when the water taking pipe is plugged by the plugging body structure; and the multiple water filling and draining assemblies are installed on the outer wall of the plugging body structure, and the water filling and draining assemblies can fill water into the closed cavity and drain water out of the closed cavity so as to adjust the sinking and floating state of the plugging body structure in water.

Description

Technical Field

[0001] The invention relates to the field of water conservancy and hydropower engineering, and in particular to a water intake pipe plugging device and an operating method thereof. Background Art

[0002] In water conservancy and hydropower projects, a large number of water intake pipes have been in operation for many years and need to be emptied for maintenance or replacement of control valves. However, some water intake pipes are located below the dead water level of the reservoir and no water retaining facilities are installed at the inlet. Therefore, they cannot be emptied for maintenance or replacement of control valves, which poses a safety hazard to the project. Summary of the invention

[0003] The technical problem to be solved by the present invention is: in view of the above-mentioned problems, a water intake pipe blocking device and an operating method thereof are provided.

[0004] The technical solution adopted by the present invention is: a water intake pipe blocking device, comprising:

[0005] A plugging body structure, with a closed cavity inside, the plugging body structure can be plugged into the reservoir end of the water intake pipe to achieve plugging;

[0006] A pressure regulating component is arranged on the blocking body structure, and the pressure regulating component can adjust the water pressure balance between the reservoir end of the water intake pipe and the inside of the water intake pipe when the blocking body structure blocks the water intake pipe;

[0007] A plurality of filling and drainage components are installed on the outer wall of the blocking body structure. The filling and drainage components can fill water into and drain water from the closed cavity to adjust the sinking and floating state of the blocking body structure in water.

[0008] Through the above-mentioned technical means, the filling and drainage components are used to fill water into the interior of the sealing body structure, so that the sealing device can sink to the inlet of the water intake pipe, and then the sealing body structure is inserted into the water intake pipe to seal the inlet, and the pressure regulating component is used to adjust the water pressure balance on the upstream and downstream sides of the sealing body structure, so that the sealing device can block water from the inlet of the water intake pipe, which is convenient for the subsequent emptying and maintenance of the water intake pipe.

[0009] In some embodiments, the pressure regulating assembly includes a pressure-equalizing pipe and a pressure-equalizing pipe control valve. The pressure-equalizing pipe runs through the sealing body structure. The pressure-equalizing pipe control valve is provided at the end of the pressure-equalizing pipe in the same direction as the reservoir end of the water intake pipe. The pressure-equalizing pipe can be used to fill the interior of the water intake pipe with horizontal pressure.

[0010] In some embodiments, the filling and drainage assembly includes a filling and drainage pipe and a filling and drainage pipe control valve. A plurality of the filling and drainage pipes are arranged on the outer wall of the sealing body structure, and the filling and drainage pipe control valve is provided at the inlet end of each of the filling and drainage pipes.

[0011] In some embodiments, the inner wall of the blocking body structure is further provided with a plurality of stiffening ribs, and the stiffening ribs are distributed horizontally and vertically on the inner surface of the blocking body structure.

[0012] In some embodiments, a rubber water stop sheet is adhered to the outer wall of the sealing body structure.

[0013] In some embodiments, the blocking body structure includes a first panel and a second panel, the first panel is in a 1 / 4 spherical crown shape, the second panel is in a 1 / 2 elliptical spherical crown shape, and the first panel and the second panel cooperate to make the blocking body structure a double spherical crown structure.

[0014] In some embodiments, when the interior of the blocking body structure is not filled with water, the comprehensive average density is less than the density of water, and when the interior of the blocking body structure is filled with water, the comprehensive average density is greater than the density of water.

[0015] Another technical solution adopted by the present invention is: an operating method of a plugging device for a water intake pipe, characterized in that it comprises the following steps:

[0016] S1. Before plugging the inlet of the water intake pipe at the reservoir end, first drain the water in the plugging structure through the filling and drainage components, and then float the plugging device to the designated water area;

[0017] S2. When the inlet of the water intake pipe at the reservoir end needs to be blocked, water in an amount that meets the sinking requirements is injected into the blocking body structure through the filling and drainage assembly;

[0018] S3. After the plugging device is sunk to the inlet position of the water intake pipe, the plugging body structure is inserted into the water intake pipe, and the water pressure balance inside and outside the water intake pipe is adjusted by the pressure regulating component;

[0019] S4, drain the water in the water intake pipe, the blocking device can block the pipe opening of the water intake pipe under the action of external water pressure, and the control gate valve on the water intake pipe is replaced at this time;

[0020] S5. After the control gate valve on the water intake pipe is replaced, water is filled into the water intake pipe using the pressure regulating assembly to balance the pressure on both sides of the upstream and downstream of the plugging device;

[0021] S6. By using part of the filling and drainage components to inject gas into the interior of the blocking body structure, the water inside the blocking body structure is discharged through the remaining filling and drainage components. After a certain amount of water is discharged, the blocking device floats up and the recovery is completed.

[0022] The beneficial effects of the present invention are:

[0023] The plugging structure is controlled to sink through the filling and drainage components, and the plugging structure is inserted into the water intake pipe. The pressure regulating component is used to control the water pressure balance inside and outside the water intake pipe, which can temporarily block the water inlet of the water intake pipe, so as to facilitate the inspection and maintenance of the water intake pipe or replace the control gate valve on the water intake pipe. At the same time, a closed cavity is formed inside the plugging structure, which can be floated with the help of the filling and drainage components, improving the transportation convenience of the plugging device, and the whole device can be reused many times. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a structural schematic diagram of the present application for blocking the water intake pipe.

[0025] Figure 2 It is a schematic diagram of the cross-sectional structure of this application.

[0026] Description of reference numerals:

[0027] 1. Water intake pipe; 2. Sealing body structure; 3. Control gate valve; 4. First panel; 5. Second panel; 6. Stiffening ribs; 7. Rubber water stop; 8. Filling and drainage pipes; 9. Filling and drainage pipe control valve; 10. Equalizing pressure pipe; 11. Equalizing pressure pipe control valve.

[0028] This specification includes references to "one embodiment" or "an embodiment." The appearance of the phrase "in one embodiment" or "in an embodiment" does not necessarily refer to the same embodiment. The particular features, structures or characteristics may be combined in any suitable manner consistent with the present disclosure.

[0029] The term "comprising" is open ended. As used in the appended claims, the term does not exclude additional structures or steps.

[0030] "First," "second," etc. As used herein, these terms act as labels for the nouns that precede them and do not imply any type of ordering (e.g., spatial, temporal, logical, etc.). DETAILED DESCRIPTION

[0031] In order to enable those skilled in the art to better understand the technical solution of the present invention, the technical solution of the present invention is further described below in conjunction with specific embodiments.

[0032] Embodiment 1:

[0033] The water intake pipe 1 is located below the dead water level of the reservoir and has no water retaining facilities. The inlet end of the water intake pipe 1 faces the reservoir, and a control gate valve 3 is provided at the outlet end of the water intake pipe 1 .

[0034] Combination Figure 1 and Figure 2As shown, this embodiment is a plugging device for a water intake pipe, including a plugging body structure 2, a pressure regulating component and a plurality of filling and drainage components. A closed cavity is provided inside the plugging body structure 2, and the plugging body structure 2 can be plugged into the reservoir end of the water intake pipe to achieve plugging. A pressure regulating component is provided on the plugging body structure 2, and the pressure regulating component can adjust the water pressure balance inside and outside the water intake pipe 1 when the plugging body structure 2 blocks the water intake pipe 1. A plurality of filling and drainage components are installed on the outer wall of the plugging body structure 2, and the filling and drainage components can fill water and drain water into the closed cavity to adjust the sinking and floating state of the plugging body structure 2 in the water. At the same time, when the closed cavity of the plugging body structure 2 is filled with water, the plugging body structure 2 can at least partially be plugged into the water intake pipe 1 to block the water intake pipe 1 and achieve water blocking.

[0035] Furthermore, the blocking body structure 2 includes a first panel 4 and a second panel 5, which are connected and cooperate to form a closed cavity. The first panel 4 is in a 1 / 4 spherical crown shape, and the second panel 5 is in a 1 / 2 elliptical spherical crown shape. The first panel 4 and the second panel 5 are connected so that the blocking body structure 2 is a double spherical crown structure, and a closed cavity is formed inside. The two ends of the pressure regulating component respectively pass through the first panel 4 and the second panel 5 and further extend to the outside of the two, and a plurality of filling and drainage components are installed on the outer wall of the first panel 4. Specifically, the first panel 4 is located on the upstream side, and the second panel 5 is located on the downstream side.

[0036] In some embodiments, the pressure regulating assembly includes a pressure-equalizing pipe 10 and a pressure-equalizing pipe control valve 11. The pressure-equalizing pipe 10 passes through the sealing body structure 2. The pressure-equalizing pipe 10 passes through the reservoir end inlet of the first panel 4 and is provided with a pressure-equalizing pipe control valve 11. The pressure-equalizing pipe 10 can be used to fill the interior of the water intake pipe 1 with horizontal pressure.

[0037] In some embodiments, the filling and drainage components include a filling and drainage pipe 8 and a filling and drainage pipe control valve 9. A plurality of filling and drainage pipes 8 are arranged on the outer wall of the first panel 4, and a filling and drainage pipe control valve 9 is provided at the inlet end of the filling and drainage pipe 8. Specifically, four filling and drainage components are used in this embodiment, and the filling and drainage pipes 8 can be used to fill and drain the interior of the plugging body structure 2.

[0038] Furthermore, when the interior of the blocking body structure 2 is not filled with water, the comprehensive average density is less than the density of water, and when the interior of the blocking body structure 2 is filled with water, the comprehensive average density is greater than the density of water.

[0039] In some embodiments, the inner walls of the first panel 4 and the second panel 5 are further provided with a plurality of stiffening ribs 6 , which are distributed horizontally and vertically on the inner surfaces of the first panel 4 and the second panel 5 , and can increase the strength of the first panel 4 and the second panel 5 .

[0040] In some embodiments, a rubber waterproof sheet 7 is adhered to the outer wall of the second panel 5 .

[0041] Embodiment 2:

[0042] This embodiment is an operating method of a water intake pipe plugging device, comprising the following steps:

[0043] S1. Before sealing the inlet of the water intake pipe 1 at the reservoir end, first drain the water in the sealing body structure 2 through the filling and drainage assembly, and then float the sealing device to the designated water area.

[0044] S1.1. Before sealing the inlet of the water intake pipe 1, drain the water in the sealing body structure 2 and close the filling and discharge pipe control valve 9. Since the comprehensive average density of the sealing body structure 2 is less than the density of water, the sealing body structure 2 is transported to the designated water area by floating.

[0045] S2. When the inlet at the reservoir end of the water intake pipe 1 needs to be blocked, an amount of water that meets the sinking requirements is injected into the blocking body structure 2 through the filling and drainage assembly.

[0046] S2.1. When the inlet of the water intake pipe 1 needs to be blocked, the filling and drainage pipe control valve 9 is opened, and after the amount of water that meets the sinking requirement is injected into the blocking body structure 2, the filling and drainage pipe control valve 9 is closed.

[0047] S3. After the plugging device is sunk to the inlet position of the water intake pipe 1, the plugging body structure 2 is inserted into the water intake pipe 1, and the water pressure balance inside and outside the water intake pipe 1 is adjusted by using the pressure regulating component.

[0048] S3.1. After the blocking structure 2 is lowered to the inlet position of the water intake pipe 1, the blocking structure 2 is inserted into the mouth of the water intake pipe 1, and the equalizing and pressure pipe control valve 11 is closed.

[0049] S4. Drain the water in the water intake pipe 1. The blocking device can block the pipe opening of the water intake pipe 1 under the action of the reservoir water pressure to prevent the reservoir water from entering the water intake pipe 1. At this time, the control gate valve 3 on the water intake pipe 1 is replaced.

[0050] S5. After the control gate valve 3 on the water intake pipe 1 is replaced, water is filled into the water intake pipe 1 using the pressure regulating assembly to balance the pressure on both sides of the upstream and downstream of the plugging device.

[0051] S5.1. After the control gate valve 3 on the water intake pipe 1 is replaced, close the control gate valve 3 of the water intake pipe 1, open the equalizing pipe control valve 11, and fill water into the water intake pipe 1 to balance the pressure on the upstream and downstream sides of the plugging body structure 2, so as to facilitate the removal of the plugging body structure 2.

[0052] S6. By using part of the filling and drainage components to inject gas into the interior of the blocking body structure 2, the water inside the blocking body structure 2 is discharged through the remaining filling and drainage components. After a certain amount of water is discharged, the blocking device floats up and the recovery is completed.

[0053] S6.1. After the upstream and downstream pressures of the blocking body structure 2 are equalized, open the drain pipe control valve, select two filling and drainage pipes 8, and inject gas into the blocking body structure 2. Under the action of the gas, the water in the blocking body structure 2 is discharged through the other two filling and drainage pipes 8. After a certain amount of water is discharged, the blocking body structure 2 begins to float and the recovery is completed.

[0054] The implementation principle of a blocking device for a water intake pipe is as follows:

[0055] The plugging structure 2 is filled with water through the filling and drainage pipe 8, so that the plugging structure 2 sinks, and then the plugging structure 2 is inserted into the water intake pipe 1, and the pressure-equalizing pipe 10 is used to adjust the water pressure balance at both ends of the plugging structure 2. The plugging structure 2 with a double spherical cap structure temporarily blocks the inlet of the water intake pipe 1, thereby solving the problem of maintenance of the water intake pipe 1 or replacement of the control gate valve 3. At the same time, a closed cavity is formed inside the plugging structure 2, which can be floated, improving the transportation convenience of the plugging structure 2, and the overall device can be reused many times.

[0056] The above are all preferred embodiments of the present invention, and are not intended to limit the protection scope of the present invention. Therefore, any equivalent changes made based on the structure, shape, and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A water intake pipe plugging device, characterized in that: include: A plugging body structure (2) is provided with a sealed cavity inside, and the plugging body structure (2) can be plugged into the reservoir end of the water intake pipe (1) to achieve plugging; a pressure regulating component, arranged on the blocking body structure (2), and capable of regulating the water pressure balance between the reservoir end of the water intake pipe (1) and the interior of the water intake pipe (1) when the blocking body structure (2) blocks the water intake pipe (1); A plurality of water filling and drainage components are installed on the outer wall of the sealing body structure (2), and the water filling and drainage components can fill water into and drain water from the closed cavity to adjust the sinking and floating state of the sealing body structure (2) in water.

2. A water intake pipe plugging device according to claim 1, characterized in that: The pressure regulating assembly comprises a pressure-equalizing pipe (10) and a pressure-equalizing pipe control valve (11); the pressure-equalizing pipe (10) passes through the sealing body structure (2); the pressure-equalizing pipe (10) is provided with the pressure-equalizing pipe control valve (11) at the end portion in the same direction as the reservoir end of the water intake pipe (1); and the pressure-equalizing pipe (10) can be used to fill the interior of the water intake pipe (1) with horizontal pressure.

3. A water intake pipe plugging device according to claim 1, characterized in that: The filling and drainage assembly comprises a filling and drainage pipe (8) and a filling and drainage pipe control valve (9); a plurality of the filling and drainage pipes (8) are arranged on the outer wall of the blocking body structure (2); and the filling and drainage pipe control valve (9) is provided at the inlet end of each of the filling and drainage pipes (8).

4. A water intake pipe plugging device according to claim 1, characterized in that: The inner wall of the blocking body structure (2) is also provided with a plurality of stiffening ribs (6), and the stiffening ribs (6) are distributed in a horizontal and vertical manner on the inner surface of the blocking body structure (2).

5. A water intake pipe plugging device according to claim 1, characterized in that: A rubber water-stop sheet (7) is adhered to the outer wall of the blocking body structure (2).

6. A water intake pipe plugging device according to claim 1, characterized in that: The blocking body structure comprises a first panel (4) and a second panel (5); the first panel (4) is in a 1 / 4 spherical crown shape, and the second panel (5) is in a 1 / 2 elliptical spherical crown shape; the first panel (4) and the second panel (5) cooperate to make the blocking body structure (2) a double spherical crown structure.

7. A water intake pipe plugging device according to claim 1, characterized in that: When the interior of the blocking body structure (2) is not filled with water, the comprehensive average density is less than the density of water; when the interior of the blocking body structure (2) is filled with water, the comprehensive average density is greater than the density of water.

8. The method for operating a water intake pipe plugging device according to any one of claims 1 to 7, characterized in that: The following steps are involved: S1. Before plugging the inlet of the water intake pipe (1) at the reservoir end, first drain the water in the plugging structure (2) through the filling and drainage assembly, and then float the plugging device to the designated water area; S2. When the reservoir end inlet of the water intake pipe (1) needs to be blocked, an amount of water that meets the sinking requirements is injected into the blocking body structure (2) through the filling and drainage assembly; S3, after the plugging device is sunk to the inlet position of the water intake pipe (1), the plugging body structure (2) is inserted into the water intake pipe (1), and the water pressure balance inside and outside the water intake pipe (1) is adjusted by using the pressure regulating component; S4, draining the water in the water intake pipe (1), the blocking device can block the pipe opening of the water intake pipe (1) under the action of the external water pressure, and at this time, the control gate valve (3) on the water intake pipe (1) is replaced; S5. After the control gate valve (3) on the water intake pipe (1) is replaced, water is filled into the water intake pipe (1) using the pressure regulating assembly to balance the pressure on both sides of the upstream and downstream of the plugging device; S6. By using part of the filling and drainage components to inject gas into the interior of the blocking body structure (2), the water inside the blocking body structure (2) is discharged through the remaining filling and drainage components. After a certain amount of water is discharged, the blocking device floats up and the recovery is completed.

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