Maintenance channel structure for water conveying pipeline

Abstract

The utility model relates to a maintenance channel structure for a water conveying pipeline. The utility model is applicable to the technical field of hydropower stations. The technical problem to be solved by the utility model is to provide the overhaul channel structure for the water conveying pipeline. According to the technical scheme, the overhaul channel structure for the water conveying pipeline is characterized in that a manhole is formed in the side wall of the water conveying pipeline, and the overhaul channel structure for the water conveying pipeline is characterized by comprising an extension pipe, a main pipe and a main pipe, the drainage assembly is arranged at the bottom of the extension pipe and is used for draining water; the plugging assembly is detachably connected to the end, away from the manhole, of the extension pipe and used for plugging the extension pipe.

Description

Technical Field

[0001] The utility model relates to the technical field of hydropower stations, in particular to a maintenance channel structure for water delivery pipelines. Background Art

[0002] With the construction of more and more long-distance and large-diameter water transfer systems in hydropower stations and water conservancy hubs, many of them are built underground. During the construction process, it is necessary to test the quality of steel lining welding through water pressure tests, and the system needs to be emptied for inspection after the test. After the water transfer system is put into operation, it also needs to be emptied and inspected regularly. Therefore, maintenance passages need to be set up to facilitate the entry and exit of staff.

[0003] At present, the problem with the steel-lined water supply system is that the design of the maintenance channel structure in some hydropower stations is complex and cannot meet the inspection and maintenance needs of each section of the long-distance and large-diameter water supply system. If a large number of additional channels are added, the construction cost will be high. Utility Model Content

[0004] The technical problem to be solved by the utility model is: in view of the above-mentioned existing problems, a maintenance channel structure for a water pipeline is provided.

[0005] The technical solution adopted by the utility model is: a maintenance channel structure for a water pipeline, the side wall of the water pipeline is provided with an access hole, characterized in that it includes:

[0006] An extension pipe, the end of which is connected to the manhole and forms an inspection passage inside;

[0007] A drainage assembly, disposed at the bottom of the extension pipe, for discharging water;

[0008] The plugging assembly is detachably connected to the end of the extension pipe away from the manhole and is used for plugging the extension pipe.

[0009] Through the above-mentioned technical means, the plugging assembly is used in conjunction with the extension pipe to meet the water pressure test of the water supply pipeline, and the drainage assembly is used to drain the water in the extension pipe after the water pressure test. Maintenance personnel enter the extension pipe through the detachable plugging assembly, and then enter the water supply pipeline through the manhole for maintenance and inspection, which greatly improves the convenience of inspection and maintenance.

[0010] In some embodiments, the drainage assembly includes a drainage pipe and a shutoff valve. A drainage hole is formed at the bottom of the extension pipe. The drainage hole is connected to the drainage pipe. The shutoff valve is installed on the drainage pipe.

[0011] In some embodiments, the blocking assembly includes a flange and a flange cover, the flange is welded to the end of the extension pipe away from the manhole, and the flange cover and the flange can be cooperatively connected to block the extension pipe.

[0012] In some embodiments, a support assembly is installed on the extension tube, and the support assembly includes a support frame and a lifting ear. The support frame is installed on the extension tube, and the lifting ear is installed on the support frame. The lifting ear is used to hang the flange cover.

[0013] In some embodiments, the extension pipe and the water pipe are welded.

[0014] In some embodiments, a reinforcement ring is installed at the connection between the extension pipe and the manhole.

[0015] The beneficial effects of the utility model are:

[0016] 1. The plugging component is used to plug the extension pipe, so that the extension pipe has sufficient sealing strength to prevent the impact on the water pressure test of the water pipeline. The drainage component can be used to assist in draining the water in the extension pipe after the water pressure test of the water pipeline to avoid water accumulation in the extension pipe, so that the staff can enter the extension pipe through the detachable plugging component and then enter the water pipeline through the manhole for timely inspection or maintenance. This technical solution has a simple structure, convenient construction, and low cost. At the same time, it can greatly improve the work efficiency of staff inspection and maintenance, and has good applicability to important sections of long-distance water supply systems. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the main structure of this application.

[0018] Figure 2 It is a schematic diagram of the structure of each part in this application.

[0019] Description of reference numerals:

[0020] 100, water pipeline; 200, manhole; 201, reinforcement ring; 300, extension pipe; 400, plugging assembly; 401, flange; 402, flange cover; 500, support assembly; 501, support frame; 502, lifting ear; 600, drainage assembly; 601, discharge pipe; 602, shut-off valve.

[0021] 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.

[0022] The term "comprising" is open ended. As used in the appended claims, the term does not exclude additional structures or steps. DETAILED DESCRIPTION

[0023] In order to enable those skilled in the art to better understand the technical solution of the present utility model, the technical solution of the present utility model is further described below in conjunction with specific embodiments.

[0024] Combination Figure 1 and Figure 2 As shown, this embodiment is a maintenance channel structure for a water pipeline, comprising: an extension pipe 300, a drainage assembly 600, a plugging assembly 400 and a support assembly 500. Figure 1 As shown, a manhole 200 is provided on the side wall of the water pipe 100, and the size of the manhole 200 satisfies the entry and exit of the staff. The first end of the extension pipe 300 is welded to the manhole 200 of the water pipe 100, and the caliber of the extension pipe 300 matches the aperture of the manhole 200. The second end of the extension pipe 300 is detachably connected to a plugging assembly 400, a support assembly 500 is installed on the top of the extension pipe 300, and a drainage assembly 600 is installed on the bottom of the extension pipe 300. The drainage assembly 600 is used to discharge the water inside the extension pipe 300. At the same time, the strength of the extension pipe 300 is not lower than the strength of the water pipe 100.

[0025] In some embodiments, a reinforcement ring 201 is provided at the connection between the extension pipe 300 and the manhole 200 , and the reinforcement ring 201 is used to strengthen the strength of the opening of the water pipeline 100 .

[0026] In some embodiments, such as Figure 2 As shown, the drainage assembly 600 includes a drainage pipe 601 and a shutoff valve 602 . A drainage hole is provided at the bottom of the extension pipe 300 . The drainage hole is connected to the drainage pipe 601 . The shutoff valve 602 is installed on the drainage pipe 601 .

[0027] In some embodiments, such as Figure 2 As shown, the plugging assembly 400 includes a flange 401 and a flange cover 402 . The second end of the extension tube 300 is welded with the flange 401 . The flange 401 and the flange cover 402 can cooperate with each other to achieve plugging of the end of the extension tube 300 .

[0028] Further, such as Figure 2 As shown, the support assembly 500 includes a support frame 501 and a lifting ear 502. The support frame 501 is welded and fixed on the extension tube 300. The lifting ear 502 is installed on the support frame 501. The position of the lifting ear 502 matches the hanging position of the flange cover 402. The cooperation between the support frame 501 and the lifting ear 502 can meet the hanging requirements of the flange cover 402.

[0029] When it is necessary to conduct a hydraulic pressure test on the water pipe 100, the end of the extension pipe 300 is blocked by connecting the flange 401 and the flange cover 402; after the hydraulic pressure test, the pipeline is emptied for inspection, the cut-off valve 602 is controlled to use the discharge pipe 601 to auxiliary discharge the water in the extension pipe 300, and the flange cover 402 is removed, so that an inspection channel is formed inside the extension pipe 300, and the staff enters the extension pipe 300 and then enters the water pipe 100 through the manhole 200, so that it is convenient for the staff to inspect or maintain. The technical solution has a simple structure, convenient construction, and low cost, and can meet the convenience of inspection or maintenance.

[0030] The above are all preferred embodiments of the present utility model, and are not intended to limit the protection scope of the present utility model. Therefore, any equivalent changes made based on the structure, shape, and principle of the present utility model should be included in the protection scope of the present utility model.

Claims

1. A maintenance channel structure for a water pipeline, wherein a manhole (200) is provided on the side wall of the water pipeline (100), characterized in that: include: An extension pipe (300), the end of which is connected to the manhole (200) and forms an inspection passage inside; A drainage assembly (600), disposed at the bottom of the extension pipe (300), for discharging water; A plugging assembly (400) is detachably connected to the end of the extension tube (300) away from the manhole (200) and is used to plug the extension tube (300).

2. The inspection channel structure for a water pipeline according to claim 1, characterized in that: The drainage assembly (600) comprises a drainage pipe (601) and a shutoff valve (602); a drainage hole is provided at the bottom of the extension pipe (300); the drainage hole is connected to the drainage pipe (601); and the shutoff valve (602) is installed on the drainage pipe (601).

3. The maintenance channel structure for a water pipeline (100) according to claim 1, characterized in that: The blocking assembly (400) comprises a flange (401) and a flange cover (402); the flange (401) is welded to the end of the extension pipe (300) away from the manhole (200); and the flange cover (402) and the flange (401) can be matched and connected to achieve blocking of the extension pipe (300).

4. The inspection channel structure for a water pipeline according to claim 3, characterized in that: A support assembly (500) is installed on the extension tube (300), and the support assembly (500) includes a support frame (501) and a lifting ear (502). The support frame (501) is installed on the extension tube (300), and the lifting ear (502) is installed on the support frame (501), and the lifting ear (502) is used to hang the flange cover (402).

5. The inspection channel structure for a water pipeline according to claim 1, characterized in that: The extension pipe (300) and the water delivery pipeline (100) are welded.

6. A maintenance channel structure for a water pipeline according to any one of claims 1 to 5, characterized in that: A reinforcement ring (201) is installed at the connection between the extension pipe (300) and the manhole (200).

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