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Condenser vacuum leakproofness detecting system and method

A technology of detection system and detection method, which is applied in the direction of liquid tightness measurement using liquid/vacuum degree, and by measuring the increase and deceleration rate of fluid, etc., which can solve the problems of incomplete experimental results and other problems

Inactive Publication Date: 2014-01-01
STATE GRID CORP OF CHINA +1
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Problems solved by technology

[0007] In order to solve the problem that the experimental results of the current vacuum tightness test are not completely accurate due to the change of the intake air volume, the embodiment of the present invention provides a method and system for detecting the vacuum tightness of the condenser

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Embodiment Construction

[0018] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0019] The technical means adopted in the present invention are mainly to use an external measuring device to measure the leakage air volume of the condenser of the unit, and judge the vacuum tightness state of the condenser more accurately according to the air leakage volume, so as to solve the problems caused by the unit failure during the current test process. The problem of inaccurate vacuum tightness test results of the condenser caused by the change of st...

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Abstract

The invention provides a condenser vacuum leakproofness detecting system and method. The detecting system comprises a vacuum pump, an air outlet measuring device and a computing device. The vacuum pump is connected with a condenser, the air outlet measuring device is installed on an air outlet pipe of an air-water separator of the vacuum pump, and the computing device is connected with the air outlet measuring device. The vacuum pump is used for discharging air leaking into the condenser and part of steam in the condenser, the air outlet measuring device is used for measuring the air content in a steam-air mixture discharged out of the air outlet pipe of the air-water separator of the vacuum pump, and the computing device generates a detection result about the vacuum leakproofness of the condenser according to the air content and a set condenser leakproofness standard. According to the condenser vacuum leakproofness detecting system and method, the vacuum leakproofness of the condenser can be accurately judged, and therefore a basis is provided for operation and maintenance strategy formulation of a unit. In addition, due to the fact that measurement is conducted at the air outlet position, normal operation of the unit will not be affected, and the situation that test accuracy is ensured at the cost of influencing stable operation of a power grid is avoided.

Description

technical field [0001] The invention belongs to the detection field of the negative pressure side system of a thermal power plant, and in particular relates to a vacuum tightness detection system and method of a condenser. Background technique [0002] The negative pressure side system of a thermal power plant is a large and relatively complex system, and its related equipment mainly includes condensers operating under negative pressure and associated condensate pumps, circulating water pumps, vacuum pumps and other equipment. The so-called negative pressure means that the condenser needs to maintain a certain pressure value far below the atmospheric pressure in order to ensure the condensation of the exhaust steam of the steam turbine at the "cold end" of the thermal system. The main operating parameters of the negative pressure side of the thermal power plant include vacuum, vacuum tightness test results, dissolved oxygen in condensate, subcooling of condensate, end differ...

Claims

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Application Information

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IPC IPC(8): G01M3/26
Inventor 梅隆黄葆华陈晓峰刘双白吕炜孙曰泰
Owner STATE GRID CORP OF CHINA
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