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Thermodynamic system for driving steam turbine

A technology for driving steam turbines and thermal systems, applied in steam engine installations, machines/engines, mechanical equipment, etc., can solve the problems of low low-pressure cylinder efficiency, large steam leakage at the extraction port, low thermal efficiency, etc., to reduce cold end losses, The effect of high equipment reliability and high device efficiency

Inactive Publication Date: 2017-10-20
北京质为科技有限公司
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AI Technical Summary

Problems solved by technology

[0005] 1. The potential working ability of regenerative steam extraction cannot be utilized, and the thermal efficiency is low
[0006] 2. It is a pure heat recovery system, which cannot provide external power interface, and cannot provide driving force for rotating equipment
[0007] 3. Limited by manufacturing level, domestic 600MW and 300MW steam turbine #5 steam extraction port always has large steam leakage and serious over-temperature phenomenon, resulting in low-pressure cylinder efficiency

Method used

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  • Thermodynamic system for driving steam turbine
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Embodiment Construction

[0054] In order to make the purpose, technical solution and advantages of the present invention clearer, the following will further describe the implementation of the present invention in detail in conjunction with the accompanying drawings. It should be understood that the specific embodiments described here are only used to illustrate and explain the present invention, and are not intended to limit the present invention.

[0055] Such as figure 1 As shown, a preferred embodiment of the present invention provides a thermal system for driving a steam turbine, comprising:

[0056]Driving steam turbine 1: The driving steam turbine 1 is driven by the exhaust steam of the intermediate pressure cylinder 62 of the main steam turbine. That is, the driving steam turbine 1 receives the exhaust steam from the intermediate pressure cylinder 62 of the main steam turbine (ie, the steam turbine for generating electricity in the power plant), so as to drive the driving steam turbine 1 . Fo...

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Abstract

The invention belongs to the technical field of steam turbines, and provides a thermal system for driving a steam turbine, comprising: a driving steam turbine, which is driven by exhaust steam from an intermediate pressure cylinder of a main steam turbine; a condensing deaerator, which receives the The exhaust steam of the driving steam turbine is used to provide a certain back pressure for the driving steam turbine so that the driving steam turbine can output power. The drive steam turbine thermal system provided by the present invention can provide the power interface provided by the low-power steam turbine, which not only simply creates a powerful power center (interface), but also reduces the loss of the cold end of the main engine and utilizes the differential pressure of steam extraction It is a brand new heat recovery system with high efficiency and energy saving.

Description

technical field [0001] The invention belongs to the technical field of steam turbines, in particular to a thermal system for driving a steam turbine. Background technique [0002] The traditional typical thermal system only considers the design of the system from the heat recovery efficiency, and does not consider the working ability of the heat recovery steam. This system can reduce the heat loss at the cold end and improve the thermal efficiency of the system, but it cannot fully utilize the differential pressure energy and available heat energy of the extraction steam. In addition, modern large-scale power plants have a large number of high-power pumps or fans, which are generally driven by electric motors. As the utilization hours of my country's thermal power plants decrease and the unit load rate is low, the demand for pump or fan speed regulation and energy saving is increasing. Although the speed regulation function can be realized by using frequency converters, per...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F01K9/00
CPCF01K9/00
Inventor 刘俊汉杜君文
Owner 北京质为科技有限公司
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