Operation method of double back-pressure double-rotor interchange type driving feed pump turbine

A technology of feedwater pump steam turbine and operation method, which is applied in the direction of engine components, machines/engines, mechanical equipment, etc., and can solve the problems that the efficiency of the drive feedwater pump steam turbine cannot be optimal, and the heat supply capacity of the main engine that affects the performance of the drive feedwater pump steam turbine, etc. Achieve the effect of maintaining high-efficiency operation and meeting the needs of safe operation

Pending Publication Date: 2021-01-05
HUADIAN ELECTRIC POWER SCI INST CO LTD
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  • Application Information

AI Technical Summary

Problems solved by technology

At present, it is generally chosen to use a set of rotor transformation schemes for driving feedwater pump steam turbines, that is, only one rotor is used for driving feedwater pump steam turbines to adapt to the high and low back pressure operating conditions. Since the desi

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  • Operation method of double back-pressure double-rotor interchange type driving feed pump turbine
  • Operation method of double back-pressure double-rotor interchange type driving feed pump turbine

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[0011]The present invention will be further described in detail below with reference to the drawings and embodiments. The following embodiments are for explaining the present invention and the present invention is not limited to the following embodiments.

[0012]Examples.

[0013]SeeFigure 1 to Figure 2This embodiment discloses an operating method of a dual-back pressure and dual-rotor interchangeable drive feedwater pump steam turbine. The operating method is implemented using a dual-back pressure and dual-rotor interchangeable drive feedwater pump turbine operating system. The operation system of the steam turbine with the changeable drive feedwater pump includes the operation system of the original feedwater pump turbine and the operation system of the high back pressure feedwater pump turbine that cooperate with each other.

[0014]In this embodiment, the original feedwater pump turbine operating system includes the original feedwater pump turbine 11, the No. 1 low pressure cylinder 12,...

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Abstract

The invention relates to an operation method of a double back-pressure double-rotor interchange type driving feed pump steam turbine. The operation method is implemented by adopting an operation system of the double back-pressure double-rotor interchange type driving feed pump steam turbine. The double back-pressure double-rotor interchange type driving feed pump turbine operation system comprisesan original feed pump turbine operation system and a high back-pressure feed pump turbine operation system which work in cooperation with each other; the original feed pump turbine operation system comprises an original feed pump turbine, a first low-pressure cylinder, a first condenser, a first heater, a first deaerator and a first steam-driven feed pump; the high back-pressure feed pump turbineoperation system comprises a high-back-pressure water feeding pump turbine, a second low-pressure cylinder, a second condenser, a second heater, a second deaerator and a second steam-driven feed pump; when a unit runs at high back pressure, a high back-pressure feed pump turbine running system is started; and when the unit operates at normal back pressure, the original feed pump turbine operationsystem before transformation is recovered to run.

Description

technical field [0001] The invention relates to the field of steam turbines, in particular to an operation method of a double back pressure double rotor interchangeable drive feed water pump steam turbine. Background technique [0002] The transformation of heat supply with double back pressure and double rotor interchange is to increase the heat supply capacity of the unit. The so-called double back pressure and double rotor interchange means that the unit uses high back pressure and low pressure rotors with a relatively reduced number of moving and stationary blades during the heating period, and uses circulating water for direct heating, and the condenser operates at a higher back pressure; Designed with low-pressure rotors to operate under normal back pressure. The 300MW unit is generally equipped with a driving feedwater pump steam turbine. Therefore, while the main engine is being transformed, the driving feedwater pump steam turbine also needs to be retrofitted with ...

Claims

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Application Information

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IPC IPC(8): F01D15/08F01D25/00
CPCF01D15/08F01D25/00
Inventor 董洋王学同王学栋闫玉峰康艳昌牛庆良袁芳伟
Owner HUADIAN ELECTRIC POWER SCI INST CO LTD
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