Wide-load efficient turbine generator set with switchable partial cylinders

A technology of steam turbine generator set and steam turbine set, which is applied in the direction of steam engine device, machine/engine, mechanical equipment, etc. It can solve the problems of decreased cycle efficiency, increased throttling loss, increased coal consumption rate of power supply, etc., so as to improve the operation economy performance, increase the main steam pressure, and promote the effect of energy saving and emission reduction

Pending Publication Date: 2020-04-21
SHANGHAI MINGHUA ELECTRIC POWER TECH & ENG
View PDF0 Cites 12 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the main steam pressure can be increased by closing the high-pressure valve, the gain outweighs the gain due to the increased throttling loss of the valve and other reasons.
The reduction of the initial parameter of the main steam pressure under low and medium loads leads to a significant decrease in cycle efficiency and a large increase in the coal consumption rate of power supply

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Wide-load efficient turbine generator set with switchable partial cylinders
  • Wide-load efficient turbine generator set with switchable partial cylinders
  • Wide-load efficient turbine generator set with switchable partial cylinders

Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment

[0041] Taking a super (super) critical 1000MW primary reheat unit as an example, the steam turbine adopts throttling steam distribution mode, and the high-pressure valve is fully opened to slide pressure operation. The main steam pressure is low under medium and low loads, which affects the economy of the unit. For this reason, the layout of high, medium and low pressure cylinders is partially cut off. Considering the high pressure cylinder block set series and the peak load requirements of the unit, the high pressure cylinder of the original 1000MW unit is divided into two high pressure cylinders, which are the original 660MW unit and the 350MW unit respectively. The high-pressure cylinder corresponding to the unit, the work and flow capacity of the two high-pressure cylinders are basically set according to the relationship of 2:1. In addition, the capacity of the original two medium-pressure cylinders is the same, and now the capacity is adjusted according to the relationship...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention relates to a wide-load efficient turbine generator set with switchable partial cylinders. The turbine set is connected with a boiler, a heater and a condenser separately and comprises high pressure cylinders, intermediate pressure cylinders and low pressure cylinders which are sequentially connected, the high pressure cylinders are connected with a main steam pipeline of the boiler,a cold reheat steam pipeline of the boiler and the heater respectively, the high pressure cylinders comprise a switching high pressure cylinder and a reserve high pressure cylinder, and the intermediate pressure cylinders comprise a switching intermediate pressure cylinder and a reserve intermediate pressure cylinder; when the load is higher than a set threshold, steam simultaneously enters tall the cylinders for work; when the load is lower than the set threshold, the switching high pressure cylinder is switched; and the switching intermediate pressure cylinder and a switching low pressure cylinder are switched. Compared with the prior art, the wide-load efficient turbine set has the advantages that the cycle efficiency under partial load is improved, wide-load efficient and economic operation of the turbine set is realized and the like.

Description

technical field [0001] The invention relates to the field of thermal power generation, in particular to a wide-load high-efficiency turbogenerator set with removable cylinders. Background technique [0002] The steam distribution methods of steam turbine units in thermal power plants are mainly divided into two categories: full-circle steam inlet throttling adjustment and partial steam inlet nozzle adjustment. Since the full-circle steam inlet unit has no adjustment stage, the efficiency of the high-pressure cylinder is relatively high. In the newly built super ( This method has begun to be used in supercritical units. For this type of unit, it is most economical to use high-pressure valve full-open sliding pressure operation, but at medium and low loads, the main steam pressure drops a lot after sliding pressure operation, often operating in the subcritical area, and does not give full play to the super (Ultra)critical units should have the characteristics of cleanliness a...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Applications(China)
IPC IPC(8): F01K13/02F01K11/02
CPCF01K11/02F01K13/02
Inventor 祝建飞吕晓东姚峻杨天海
Owner SHANGHAI MINGHUA ELECTRIC POWER TECH & ENG
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap