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Enhanced type steam ejector system in cooperation with sliding pressure optimization

An ejector, enhanced technology, applied in steam applications, steam engine installations, machines/engines, etc., can solve problems such as low ejection efficiency, and achieve good effects, novel and unique circuit structure, and good social and economic benefits.

Pending Publication Date: 2018-12-18
CENT CHINA BRANCH OF CHINA DATANG CORP SCI & TECH RES INST CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] In view of the above situation, in order to overcome the defects of the prior art, the purpose of the present invention is to provide an enhanced steam ejector system that cooperates with the unit sliding pressure optimization, which can effectively solve the problem of low ejection efficiency of the unit at low load

Method used

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  • Enhanced type steam ejector system in cooperation with sliding pressure optimization
  • Enhanced type steam ejector system in cooperation with sliding pressure optimization
  • Enhanced type steam ejector system in cooperation with sliding pressure optimization

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Embodiment Construction

[0010] The specific implementation manners of the present invention will be described in further detail below in conjunction with the accompanying drawings.

[0011] Depend on Figure 1-3 Given, the present invention comprises the first steam ejector 15 and the second steam ejector 7, the high-pressure steam inlet of the first steam ejector 15 is connected with one end of the first valve group A, the other end of the first valve group Connect one end of the second valve group B and one end of the third valve group C respectively, the common end of the first valve group A, the second valve group B and the third valve group C is connected with the medium-pressure cylinder exhaust pipeline 21, the second The low-pressure injection steam inlet of a steam ejector 15 is connected to one end of the fourth valve group D, and the other end of the fourth valve group D is connected to one end of the fifth valve group E, and the common end of the two is connected to the low-pressure cylin...

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Abstract

The invention relates to an enhanced type steam ejector system in cooperation with sliding pressure optimization. According to the technical scheme adopted by the invention, the enhanced type steam ejector system comprises a first steam ejector and a second steam ejector, wherein a first diffuser tube is arranged on a high-pressure steam inlet of the first steam ejector; and a second diffuser tubeis arranged on a low-pressure ejecting stream inlet of the first steam ejector. The enhanced type steam ejector system in cooperation with sliding pressure optimization is novel and unique in circuitstructure, is simple and reasonable, adopts different ejecting ways under different loads, solves the problem that ejecting efficiency under low load of a steam extraction ejector is low, improves comprehensive utilization efficiency of system energy, is convenient to use, is good in effect, provides a technical scheme for performing unit sliding pressure optimization on the basis, and has good social and economic benefits.

Description

technical field [0001] The invention relates to an enhanced steam ejector system cooperating with the optimization of the sliding pressure of the unit. Background technique [0002] In the context of thermal power units participating in deep peak regulation and heating, it is urgent to explore the sliding pressure optimization curve of supercritical heating units to provide guidance for power plants to save energy and increase efficiency. Most of the heating units provide heat sources for central heating in urban areas in winter, and most areas have also laid central heating networks. Power plants need to provide heat sources to the local heat exchange stations of the heating network, and the heating network has requirements for heat source pressure. Generally 0.3MPa. Power plants usually extract steam from the final stage of the medium-pressure cylinder of the steam turbine. The discharge pressure of the supercritical 350MW unit is basically about 1MPa under the 100% load ...

Claims

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Application Information

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IPC IPC(8): F04F5/16F04F5/46F01K13/00F01K17/00F01K21/00
CPCF01K13/00F01K17/00F01K21/00F04F5/16F04F5/46
Inventor 屈海涛张军科葛挺张文涛杜献伟白娜谭良红赵豫晋李冰天
Owner CENT CHINA BRANCH OF CHINA DATANG CORP SCI & TECH RES INST CO LTD
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