Steam supply system for dynamic performance test of turbo-generator set

Abstract

The invention discloses a steam supply system for testing the dynamic performance of a turbo-generator set, which includes a boiler, a main steam valve, a turbo-generator set, a double-pressure condenser and a pump set, and the boiler is sequentially connected with the main steam valve, steam The turbine generator set, the steam inlet on the low-pressure side of the dual-pressure condenser and the pump set are connected in circulation to form a closed-loop working circuit; a branch is connected to the pipeline between the boiler and the main steam valve, and the branch is provided with a pressure reducing valve, A flow-restricting orifice and a desuperheater; the end of the branch is connected to the steam inlet of the high-pressure side of the dual-pressure condenser; the outlet of the high-pressure side of the dual-pressure condenser is connected to the pump set. During the dynamic performance test of the steam turbine generator set, according to the deviation and change rate of the steam pressure in front of the main steam valve and the set value, the pressure reducing valve is automatically opened or reduced to maintain the steam pressure in front of the main steam valve within the required range.

Description

technical field [0001] The invention relates to the technical field of steam turbine generator sets, in particular to a steam supply system used for dynamic performance testing of steam turbine generator sets. Background technique [0002] During the performance test of the steam turbine generator set, a single boiler supplies steam to the steam turbine generator set, which is a unit heating system, that is, one boiler corresponds to the operation mode of one or more steam turbine generator sets. The steam in the room cannot be stored, and the test requires cooperation and coordination between the boiler and the turbo-generator set, otherwise it will cause fluctuations in the steam supply pressure and the operating speed of the turbo-generator set, which cannot meet the test and test requirements. [0003] During the dynamic performance test of the turbo-generator set, the maximum load change of the turbo-generator set suddenly changes between 100% and 0%, and the inlet stea...

AI Technical Summary

Problems solved by technology

[0004] For the dynamic performance test of a single steam turbine generator set, due to the inherent differences in the operating characteristics of the boiler and the steam turbine generator set, when the load of the steam turbine generator set suddenly increases from 0% to 100%, the steam supply pressure drops significantly, and the steam supply flow rate It cannot be supplied in time and quickly, and when the load of the steam turbine generator set suddenly decreases from 100% to 0%, the steam supply pressure will rise sharply, which cannot meet the requirements of the test and test, and there are potential safety hazards

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