Control system and control method of backpressure extraction steam water-feeding pump turbine and turbine

A control system and steam turbine technology, applied in the direction of machines/engines, mechanical equipment, engine components, etc., can solve the problem of increased difficulty in speed control and achieve the effect of flexible speed adjustment

Active Publication Date: 2018-07-03
SHANGHAI ELECTRIC POWER GENERATION EQUIPMENT CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In addition, since the change of exhaust pressure will affect the change of speed at the same time, it will increase the difficulty of speed control

Method used

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  • Control system and control method of backpressure extraction steam water-feeding pump turbine and turbine
  • Control system and control method of backpressure extraction steam water-feeding pump turbine and turbine
  • Control system and control method of backpressure extraction steam water-feeding pump turbine and turbine

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Embodiment Construction

[0036] Embodiments of the present invention are described below through specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific implementation modes, and various modifications or changes can be made to the details in this specification based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that, in the case of no conflict, the following embodiments and features in the embodiments can be combined with each other.

[0037] It should be noted that the diagrams provided in the following embodiments are only schematically illustrating the basic ideas of the present invention, and only the components related to the present invention are shown in the diagrams rather than the number, shape and shape of the compo...

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Abstract

The invention provides a control system and a control method of a backpressure extraction steam water-feeding pump turbine and a turbine. The control system of the backpressure extraction steam water-feeding pump turbine comprises a measuring unit, a controlling unit and an executing unit, wherein the measuring unit is used for measuring a rotation speed signal, a temperature signal, a steam exhaust pressure signal and a steam feeding gate valve position adjusting signal; the controlling unit is used for setting a steam exhaust pressure setting value and sending a rotation speed controlling signal, a steam exhaust pressure controlling signal and a special working condition controlling signal to the executing unit according to the rotation speed signal, the temperature signal, the steam exhaust pressure signal and the steam feeding gate valve position adjusting signal sent by the measuring unit; and the executing unit is used for executing corresponding operations according to the rotation speed controlling signal, the steam exhaust pressure controlling signal and the special working condition controlling signal sent by the controlling unit. According to the control system and the control method of the backpressure extraction steam water-feeding pump turbine and the turbine disclosed by the invention, a requirement on water feeding rotation speed of a boiler can be met, and requirements on sucking and exhausting the steam to a heater also can be met.

Description

technical field [0001] The invention relates to the technical field of steam turbines, in particular to a control system and control method of a steam extraction backpressure feedwater pump steam turbine and a steam turbine. Background technique [0002] The feedwater pump turbine is one of the main components of the thermal cycle system of the power station, especially in the ultra-supercritical unit with high parameters and large capacity. Its safe and reliable operation directly affects the operation of the entire power station equipment. Because of its high requirements in terms of safety and reliability, automation level, and load adaptability, only a few companies in the world can design and manufacture million-kilowatt unit feedwater pump turbines. [0003] The existing feed water pump turbine only meets the needs of boiler feed water by controlling the speed of the pump. The Backpressure Extraction Steam Turbine (BEST) is a new type of driven feedwater pump turbine....

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F01D17/10
CPCF01D17/10
Inventor 包锦华黄勇李刚
Owner SHANGHAI ELECTRIC POWER GENERATION EQUIPMENT CO LTD
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