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Condensate pipeline and method for improving vibration of condensate pipeline

A technology of condensate pipes and pipe bends, which is applied in the direction of pipes/pipe joints/fittings, siphon pipes, pipe components, etc., which can solve problems such as increased maintenance costs, maintenance personnel workload, threats to safe operation of units, and condensate system failures. Effect of increasing resistance, reducing vibration, and reducing medium flow rate

Active Publication Date: 2017-11-21
HUADIAN HEAVY IND CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The vibration of the condensate pipe in the air cooling system will cause the failure of the condensate system, which poses a serious threat to the safe operation of the unit and greatly increases the maintenance cost and the workload of the maintenance personnel

Method used

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  • Condensate pipeline and method for improving vibration of condensate pipeline
  • Condensate pipeline and method for improving vibration of condensate pipeline

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Embodiment Construction

[0042] At present, it is generally believed that the main causes of pipeline vibration are:

[0043] a. The mechanical vibration of the equipment connected to the pipeline is transmitted to the vibration of the pipeline;

[0044] b. The pressure pulsation caused by the start and stop of the pump or the action of the valve induces the vibration of the pipeline;

[0045] c. Environmental factors cause pipeline vibration (such as wind, earthquake, etc.).

[0046] After analyzing the above reasons and taking improvement measures, the problem of large vibration and noise in the vertical pipe section has not been solved.

[0047] The invention finds out the main cause of the vibration of the vertical pipe section of the condensed water pipeline through experimental research, and provides a solution. In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below in con...

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Abstract

The invention discloses a condensation water pipe and a method for reducing vibration of the condensation water pipe. The method comprises the following steps that the condensation water pipe is simulated; the pressure change of the lowest point of a continuous vertical pipe segment of the condensation water pipe along with running time and the liquid phase distribution of the vertical pipe segment are monitored; the time corresponding to the maximum pressure value of the lowest point is obtained, and the liquid phase distribution, corresponding to the time, of the radial section of the vertical pipe segment is obtained; a cavitation area of the vertical pipe segment is obtained according to the liquid phase distribution of the radial section; and the maximum continuous vertical height not larger than the height of the cavitation area is obtained according to the height of the cavitation area; and according to the maximum continuous vertical height, the vertical pipe segment is provided with bent pipes in a segmented manner, and / or restriction orifices are arranged in the vertical pipe segment corresponding to the front end of the cavitation area. According to the scheme, it is found that vibration of the vertical pipe segment of the condensation water pipe is mainly caused by the cavitation effect; the medium flowing resistance is increased in the manner of arranging the bent pipes and the restriction orifices, the flowing speed is lowered, and cavitation is restrained; and therefore pipe vibration is effectively reduced.

Description

technical field [0001] The invention relates to the technical field of pipelines in air-cooled power plants, in particular to a condensate pipeline and a method for improving the vibration of the condensate pipeline. Background technique [0002] During the operation of the air-cooled power plant, the exhaust steam of the steam turbine will be cooled into condensed water through the air-cooled condenser, and then flow to the exhaust device by itself through the condensed water pipeline system. [0003] At present, the elevation difference between the condensate outlet of the lower header of the air-cooled tube bundle and the air-condensate condensate inlet of the exhaust device is generally more than 35m. Due to the limited space of the site, there is a vertical pipe of about 20-50m in the layout of the condensate pipe. According to the site reports of multiple projects, the vertical pipes descending along the air-cooled column of the condensate piping system experienced la...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16L55/033F16L55/027F16L43/00
CPCF16L43/00F16L55/02718F16L55/02736F16L55/033
Inventor 金红伟邢苍刘学王昕郭孝利武楠齐琦
Owner HUADIAN HEAVY IND CO LTD
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