System and method for carrying out steam turbine running by virtue of non-nuclear steam

Abstract

The invention discloses a system and a method for carrying out steam turbine running by virtue of non-nuclear steam. The system comprises an isolation door for the outlet of a water feeding pump, a high-pressure heater bypass tube, an evaporator, a main steam door, an external steam inflation valve group and a pressure container. According to the method, a time needed for heating external steam to steam under running parameters by virtue of the heat generated by rotation of a main pump (main nuclear fan) is shorter (relative to a time needed for heating water to water under the running parameters), thus the running time is greatly shortened, and the test run construction period is shortened; and the external steam can be continuously supplied if the pressure of the external steam is greater than the minimum pressure needed for the running, the heat is generated by the rotation of the main pump (main nuclear fan) to further heat the steam to achieve running requirements. Therefore, the steam under the running parameters can be continuously supplied, thus continuous running of a steam turbine after achieving a constant speed is ensured, most of tests on the steam turbine in the constant-speed state are completed, the occupied time of a conventional island test on a nuclear power station after charging is reduced, and then the test run construction period of a nuclear power unit is shortened.

Description

Technical field: [0001] The invention relates to the technical field of nuclear power, in particular to a system and a method for using non-nuclear steam to run a steam turbine. Background technique: [0002] At present, PWR nuclear power plants can use the heat generated by the rotating friction of the main pump to heat the steam generated by the secondary circuit to the flushing parameter for a long time before loading fuel. However, due to the limited heat generated by the main pump, the latent heat of vaporization is very large. Therefore, the time to generate steam is very long and the amount of steam is very small. With the consumption of steam during slewing, the steam parameters drop rapidly, and it is impossible to maintain the constant speed operation of the steam turbine for a long time, and it is impossible to complete most of the tests of the steam turbine after the constant speed; [0003] The heat generated by the rotation of the main nuclear fan of the high-t...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the problem that the current nuclear power plant does not have enough steam to run the steam turbine before charging, and to complete the test of the steam turbine at a constant speed, and to provide a system and method for using non-nuclear steam to run the steam turbine

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