Device for on-line monitoring of vacuum leakproofness of steam turbine based on gas state equation and running method

Abstract

The invention relates to a device for on-line monitoring of vacuum leakproofness of a steam turbine based on a gas state equation and a running method. At present, on-line monitoring of leakproofnessof a field vacuum system cannot be performed. In the device for on-line monitoring of vacuum leakproofness of a steam turbine based on a gas state equation, a condenser is connected with a vacuum pumpthrough a No.1 pipeline, and a vacuum breaking valve is mounted on the No.1 pipeline; the vacuum pump is connected with a steam-water separation device; the steam-water separation device is connectedwith a gas collection device through a No.2 pipeline, a steam-water separation device safety valve, a steam-water separation device air bleeding regulating valve and a gas collection device air inletregulating valve are mounted on the No.2 pipeline, the gas collection device is connected with the vacuum pump through a No.3 pipeline, and a gas collection device vacuumizing regulating valve is mounted on the No.3 pipeline; and a gas collection device pressure measuring point and a gas collection device temperature measuring point are arranged on the gas collection device, the gas collection device is connected with an operator stator, and the operator station is provided with a timer. The device provided by the invention is used for on-line monitoring of vacuum leakproofness of the steam turbine, and facilitates knowing of the running state of a unit in time.

Description

technical field [0001] The invention relates to an on-line monitoring device for vacuum tightness of a steam turbine based on a gas state equation and an operation method thereof, which are used for monitoring the tightness of a vacuum system of a steam turbine. Background technique [0002] The tightness of the vacuum system is an important indicator in the operation of thermal power plants, which has a great impact on the safe and economical operation of the unit. If online monitoring is realized, the operating personnel can know the operating status of the unit in a timely manner, which is convenient for timely adjustment and maintenance. At present, thermal power plants have not yet realized online monitoring of the tightness of the vacuum system, and still use the method of vacuum system tightness test to regularly evaluate the amount of vacuum air leakage, such as the Chinese patent application number 201620405745.0. To monitor the tightness of the vacuum system, it is...

AI Technical Summary

Problems solved by technology

To monitor the tightness of the vacuum system, it is necessary to measure the air flow leaking into the condenser. For a vacuum system with a vacuum pump and a steam-water separation device, if it is measured from the inlet of the vacuum pump, since the extracted gas contains air

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