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Boiler feed water heating system of paralleling operation steam turbine units

A technology for heating system and boiler feed water, applied in the field of boiler feed water heating, which can solve the problems of low efficiency and high consumption of water feed system.

Active Publication Date: 2015-11-25
李俊峰
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  • Summary
  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0004] The purpose of the present invention is to propose a steam turbine unit boiler feed water heating system that operates in parallel to solve the excessive consumption and low efficiency of the existing boiler feed water system.

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  • Boiler feed water heating system of paralleling operation steam turbine units

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Embodiment Construction

[0017] Below in conjunction with accompanying drawing, a kind of steam turbine unit boiler feedwater heating system of parallel operation of the present invention will be further described: this embodiment is only used to illustrate the present invention and is not intended to limit the scope of the present invention, and those skilled in the art will understand various aspects of the present invention All modifications of the valence form fall within the scope defined by the appended claims of the present application.

[0018] As shown in the figure, a boiler feedwater heating system of steam turbine units operating in parallel includes a boiler feedwater heating system A connected to M high backpressure steam turbines, a heat pump 10, and a boiler feedwater heating system connected to N low backpressure steam turbines B and control system; heating system A and heating system B respectively include a condenser 5 and a condensate pool 6 connected in series with the boiler 1 and...

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Abstract

The invention provides a boiler feed water heating system of paralleling operation steam turbine units. The boiler feed water heating system comprises boilers, high-back-pressure steam turbines, low-back-pressure steam turbines, condensers, condensation water pools, circulating cooling water pumps, circulating water cooling towers, high-pressure heaters, low-pressure heaters and deaerators. Through the paralleling operation steam turbine units different in steam exhaust back pressure, exhaust steam and circulating water waste heat of the high-back-pressure steam turbines are used for replacing exhaust steam of the low-back-pressure steam turbines for heating of boiler feed water of the low-back-pressure steam turbines, and the energy saving aim of reducing the coal consumption rate in power generation of the turbines is achieved.

Description

technical field [0001] The invention relates to the field of boiler feed water heating, in particular to a boiler feed water heating system of steam turbine units operating in parallel. Background technique [0002] The energy conversion process when the steam turbine unit is working is that the steam generated by the boiler becomes exhausted steam after the steam turbine does work, and the exhausted steam is cooled by the cooling system behind the steam turbine and then condenses into water. The condensed water is used as boiler feed water again, and then It is sent back to the boiler to become steam, and the steam then enters the steam turbine to do work. In this cycle, the condensed water needs to be heated to the design temperature of the boiler feed water before being sent to the boiler as boiler feed water. The heat source for heating the boiler feed water comes from the low pressure of the steam turbine. The heating equipment used to heat the boiler feed water is boil...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F01K17/02F01K11/02F22D1/50F22D5/26F22D11/06
Inventor 李俊峰王凡
Owner 李俊峰
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