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Supercritical steam turbine with large-flow and high-parameter heat supply and steam extraction functions

A high-parameter, high-flow technology, applied in the field of steam turbines, which can solve the problems of small extraction steam flow and low steam parameters.

Pending Publication Date: 2021-05-11
HARBIN TURBINE +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the patent of the present invention: the present invention aims to solve the common problem that the steam parameters of the steam extraction steam turbines put into operation in the world are relatively low when the extraction steam flow rate is large, or the steam extraction parameters are high To solve the problem of small extraction steam flow, provide a supercritical steam turbine with large flow and high parameters for heating and extraction

Method used

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  • Supercritical steam turbine with large-flow and high-parameter heat supply and steam extraction functions

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Experimental program
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Effect test

specific Embodiment approach 1

[0030] Embodiment 1: A supercritical steam turbine with large flow and high parameters for heating and extracting steam, which includes a boiler 1, a high-pressure steam circuit, a medium-pressure steam circuit, a low-pressure steam circuit, a heating circuit and a heating circuit ;

[0031] The inlet end of the high-pressure steam gas path, the inlet end of the medium-pressure steam gas path and the inlet end of the heating gas path are connected in parallel with the outlet end of the boiler 1, and one end of the outlet end of the high-pressure steam gas path is connected with the inlet end of the boiler 1 , the other end of the outlet end of the high-pressure steam gas path is connected to the inlet end of boiler 1 through a heating gas path, one end of the outlet end of the medium-pressure steam gas path is connected to the inlet end of the low-pressure steam gas path, and the other end of the outlet end of the medium-pressure steam gas path One end is connected to boiler 1...

specific Embodiment approach 2

[0032] Specific embodiment two: the high-pressure steam gas circuit includes a high-pressure cylinder 2 and a high-pressure valve 3;

[0033] The inlet of the high-pressure cylinder 2 is connected to the outlet of the boiler 1 through the No. 1 gas path, the high-pressure valve 3 is arranged on the No. 1 gas path, and one end of the outlet of the high-pressure cylinder 2 is connected to the inlet of the boiler 1 through the No. 2 gas path. , the other end of the outlet end of the high-pressure cylinder 2 is connected to the heating gas path through the No. 3 gas path.

[0034] Other implementation manners are the same as the specific implementation manner 1.

specific Embodiment approach 3

[0035] Embodiment 3: The medium-pressure steam gas circuit includes No. 1 medium-pressure cylinder 4, No. 1 medium-pressure valve 5, No. 2 medium-pressure cylinder 7 and No. 2 medium-pressure valve 8;

[0036]The inlet end of the No. 1 medium pressure cylinder 4 is connected to the outlet end of the boiler 1 through the No. 4 gas circuit, the No. 1 medium pressure valve 5 is arranged on the No. 4 gas circuit, and one end of the outlet port of the No. 1 medium pressure cylinder 4 passes through the No. 5 gas circuit. The gas path is connected to the inlet end of the low-pressure steam gas path, the No. 5 gas path is provided with a communication pipe isolation valve 6, and the other end of the outlet end of the No. 1 medium pressure cylinder 4 is connected to the inlet end of the heating gas path through the No. 6 gas path , the No. 6 gas line is provided with an exhaust isolation valve 13;

[0037] The inlet of the No. 2 medium-pressure cylinder 7 is connected to the outlet of...

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Abstract

The invention relates to the technical field of steam turbines, in particular to a supercritical steam turbine with large-flow and high-parameter heat supply and steam extraction functions, and aims to solve the problems that when heat supply and steam extraction steam turbines which are put into operation in the world at present carry out heat supply and stream extraction outwards, generally, steam parameters are too low when the steam extraction flow is large, or the steam extraction flow is too small when steam extraction parameters are high. The inlet end of a high-pressure steam gas path, the inlet end of a medium-pressure steam gas path and the inlet end of a heat supply gas path are connected with the outlet end of a boiler in parallel, one end of the outlet end of the high-pressure steam gas path is connected with the inlet end of the boiler, the other end of the outlet end of the high-pressure steam gas path is connected with the inlet end of the boiler through a heating gas path, one end of the outlet end of the medium-pressure steam gas path is connected with the inlet end of the low-pressure steam gas path, the other end of the outlet end of the medium-pressure steam gas path is connected with the boiler through a heating gas path, the outlet end of the low-pressure steam gas path is connected with the boiler through a heating gas path, and the steam pressure and the steam flow can be freely extracted from the reheating hot section.

Description

technical field [0001] The invention relates to the technical field of steam turbines, in particular to a supercritical steam turbine with large flow and high parameters for heating and extracting steam. Background technique [0002] At present, the heat extraction steam turbines put into operation in the world generally have the problem of low steam parameters when the extraction steam flow rate is large, or the extraction steam flow rate is small when the extraction steam parameters are high. A steam turbine has the ability to extract both high steam parameters and large steam flow. This is mainly because it is very difficult to develop a steam turbine with this capability in structural design and system control. According to the needs of the current power market development, there is an urgent need for a steam turbine that can extract a large steam flow in the reheating section of the steam turbine without affecting the efficiency and safe operation of the unit. Conten...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F01K7/32F01K13/00F01K13/02F01K17/02F01D13/02F01D15/10F01D17/14
CPCF01K7/32F01K17/02F01K13/02F01K13/006F01D15/10F01D13/02F01D17/145
Inventor 王洪鹏刘鑫张志伟赫广迅禹贯省邢冠一鲍大虎张洋洋翟玉琛张金春张月红祝海义梁梦飞
Owner HARBIN TURBINE