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Unit steam extraction heat supply energy gradient utilization method

A technology for steam extraction and heating and generating units, which is applied in steam applications, mechanical equipment, steam engine installations, etc., can solve the problems that high-quality steam kinetic energy cannot be fully utilized, and the comprehensive utilization rate of energy is low. simple steps

Inactive Publication Date: 2018-12-18
HUADIAN WEIFANG POWER GENERATION CO LTD
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Problems solved by technology

Due to relatively high steam parameters, if it is directly used for heating, the kinetic energy of high-quality steam cannot be fully utilized, and there is a disadvantage of low comprehensive utilization of energy

Method used

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  • Unit steam extraction heat supply energy gradient utilization method

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Embodiment Construction

[0023] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0024] Such as figure 1 As shown, a cascade utilization method of unit extraction and heating energy is based on the heating and heating network. The heating and heating network includes back pressure generator sets and circulating water pump turbines. output;

[0025] The heat energy carried by the steam extraction of each unit is converted into electric energy by the back pressure generator set, and the electric energy is put into the heating network or input into the power grid;

[0026] The heat energy carried by the extraction steam of each unit is used to do work by the circulating water pu...

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Abstract

The invention discloses a unit steam extraction heat supply energy gradient utilization method. Based on a heating heat network, the heating heat network comprises a backpressure power generator unitand a circulation water pump turbine. Unit steam extraction is at least divided into two paths, and the amount of each path of unit steam extraction is output according to the step level. According toheat energy carried by each path of unit steam extraction, the backpressure power generator unit is utilized for converting energy into electric energy, and the electric energy is input into the heating heat network to be used for input into a power grid. The kinetic energy carried by each path of unit steam extraction does work through the circulation water pump turbine, and the kinetic energy is converted into heat energy. After the method is adopted, all kinetic energy and heat energy of the unit steam extraction can be recycled, the on-grid energy of a power plant can be increased throughthe recycled electric energy, the steps are simple, implementation is easy, and cost is low.

Description

technical field [0001] The invention relates to the technical field of heating systems, in particular to a method for cascaded utilization of steam extraction and heating energy of a unit. Background technique [0002] At present, medium-pressure cylinders are often used to extract steam for heating of large units, and the extraction parameters are relatively high, with a pressure of 0.4-1.0 MPa and a temperature of 370 °C. Usually, after steam extraction, temperature reduction and pressure reduction, the heating steam enters the first station of the heating network and is heated by the heating network heater to heat the circulating water of the heating network. Due to relatively high steam parameters, if it is directly used for heating, the kinetic energy of high-quality steam cannot be fully utilized, and there is a disadvantage of low comprehensive utilization of energy. Contents of the invention [0003] In view of the above deficiencies, the purpose of the present in...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F01K17/00F01K17/02
CPCF01K17/00F01K17/02
Inventor 马保会国钦光周宏斌孙光玉燕洪明朱宝森
Owner HUADIAN WEIFANG POWER GENERATION CO LTD
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