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Pipeline structure convenient to replace online and online replacement method

A technology for pipelines and pipe fittings, which is applied in the field of pipeline structure and online replacement, which can solve the problems of production interruption and loss of replacement pipelines, and achieve the effects of avoiding shutdown and production stoppage, realizing replacement and maintenance operations, and ensuring normal transportation

Active Publication Date: 2021-06-15
CHINA YANGTZE POWER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, pipelines, as the main equipment for liquid transportation, have a high utilization rate in hydropower stations. Since the conventional pipelines have only one layer, when the pipeline is damaged and leaks, it is necessary to repair the pipeline in time. During periods of full power generation, interruptions in production due to pipe replacements can be very costly

Method used

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  • Pipeline structure convenient to replace online and online replacement method
  • Pipeline structure convenient to replace online and online replacement method
  • Pipeline structure convenient to replace online and online replacement method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Such as figure 1 Among them, a pipeline structure that is convenient for online replacement, including a pipe fitting and a shut-off device 6, the pipe fitting is composed of an inner pipe 1 and an outer pipe 2, and the inner pipe 1 and the outer pipe 2 are socketed and the inner pipe 1 and the outer pipe 2 A ring-shaped cavity 3 is formed between them, and the two ends of the cavity 3 are sealed by a sealing ring 4;

[0035] The intercepting device 6 is arranged between two adjacent pipe fittings;

[0036] In a preferred solution, a viewing window 5 is provided on the wall of the outer tube 2 .

Embodiment 2

[0038] Such as Figure 2-4 On the basis of Example 1, the intercepting device 6 adopts a hollow cylindrical structure whose inner diameter is the same as that of the pipe, and the two ends of the intercepting device 6 are respectively provided with a first semicircular hole 7 and a second semicircular hole 8, And the first semicircular hole 7 and the second semicircular hole 8 are centrally symmetrically arranged on both sides of the midline of the section of the interceptor 6, and two interceptors 16 are arranged in the interceptor 6, and the two interceptors 16 are fan-shaped and have a central angle greater than 180° and less than 270°, the two cutoff plates 16 are respectively attached to the inner walls of the two ends of the cutoff device 6, and the two cutoff plates 16 are connected and fixed by the rotating shaft 17, which is arranged on the central axis of the cutoff device 6, and the rotating shaft 17 One end extends to the outside of the intercepting device 6, and o...

Embodiment 3

[0042] On the basis of Embodiment 2, two annular grooves 13 are provided on the inner wall of the intercepting device 6, and the two annular grooves 13 are arranged close to the first semicircular hole 7 and the second semicircular hole 8 respectively, and the two intercepting plates 16 The outer edges of the rings are respectively set in the two annular grooves 13.

[0043] In a preferred solution, the drainage joint 11 is arranged on the side wall of the shutoff device 6 between the two annular grooves 13 .

[0044] In a preferred solution, the drainage connector 11 is provided with a valve 12 .

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PUM

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Abstract

The invention relates to a pipeline structure convenient to replace online and an online replacement method. The pipeline structure comprises pipe fittings and cut-off devices, wherein each pipe fitting is composed of an inner pipe and an outer pipe; each inner pipe and the corresponding outer pipe are connected in a sleeved mode; an annular cavity is formed between each inner pipe and the corresponding outer pipe; the two ends of each cavity are plugged and sealed through plugging rings; one cut-off device is arranged between each two adjacent sections of pipe fittings; each cut-off device adopts a hollow cylindrical structural body; semicircular holes are formed in the end faces of the two ends of each cut-off device; two cut-off plates are arranged in each cut-off device and are connected and fixed through a rotating shaft; each rotating shaft is arranged on the central axis of the corresponding cut-off device; one end of each rotating shaft extends out of the corresponding cut-off device; a rotating wheel is arranged at the end, located outside each cut-off device, of the corresponding rotating shaft; and a drainage connector is arranged on the side wall of each cut-off device. According to the pipeline structure convenient to replace online and the online replacement method provided by the invention, by the adoption of the structure, on the premise that the water conveying continuity of the pipeline is guaranteed, broken pipeline sections can be replaced and overhauled, so that power generation production operation is ensured to be conducted smoothly, and the problems of machine halt and production halt caused by pipeline replacement and overhauling are solved.

Description

technical field [0001] The invention relates to the field of pipeline maintenance, in particular to a pipeline structure and an online replacement method that are convenient for on-line replacement. Background technique [0002] At present, pipelines, as the main equipment for liquid transportation, have a high utilization rate in hydropower stations. Since the conventional pipelines have only one layer, when the pipeline is damaged and leaks, it is necessary to repair the pipeline in time. During periods of full power generation, interruptions in production caused by pipe replacements can be very costly. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a pipeline structure and an online replacement method that are convenient for online replacement, which can replace and repair broken pipeline segments under the premise of ensuring the continuity of pipeline water delivery, and ensure smooth power generation produ...

Claims

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Application Information

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IPC IPC(8): F16L9/18F16L29/00F16L55/10F16L55/16F16K3/08F16K3/314F17D5/00
CPCF16L9/18F16L29/007F17D5/00F16L55/1018F16L55/1608F16K3/08F16K3/314
Inventor 陈正新张红伟凌德贵黄福元韩普昌
Owner CHINA YANGTZE POWER