Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Feed water pump turbine steam exhaust waste heat recovering and recycling system

A feed pump steam turbine, waste heat recovery technology, applied in steam applications, steam engine installations, mechanical equipment and other directions, to achieve the effects of good compatibility, easy implementation and perfect adaptability

Pending Publication Date: 2018-09-14
UNI RISING BEIJING TECH CO LTD
View PDF5 Cites 7 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It not only ensures the operation of the heating condition in winter; the non-heating condition can be easily switched back to the original pure condensing condition

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
  • Feed water pump turbine steam exhaust waste heat recovering and recycling system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0041] A power plant is installed with two 300MW direct air-cooled units, the feed pump is driven by a condensing small steam turbine, and the small steam turbine and the large steam turbine share an air-cooled island to cool the exhaust steam. The large steam turbine has been converted into a high back pressure operation unit for heating in winter.

[0042] The power plant was originally designed to run at a back pressure of 15KPa.a in winter, that is, the designed back pressure of both the large steam turbine and the small steam turbine in winter is 15KPa.a. After changing to high back pressure operation unit, the operation back pressure of large steam turbine in winter is raised to 35KPa.a.

[0043] When running with high back pressure in winter, it also causes the back pressure of the small steam turbine to increase (from 15KPa.a to 35KPa.a). An increase in back pressure will result in insufficient output of the small steam turbine.

[0044] Therefore, changing to high b...

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

A feed water pump turbine steam exhaust waste heat recovering and recycling system comprises a big turbine, an air cooling island or a condenser, a high back pressure condenser, a small feed water pump turbine, a steam increase machine, a steam increase machine condenser and a steam exhaust lead-out system. A lower pressure cylinder steam discharging pipeline of the turbine is connected with the air cooling island or the condenser. Through the steam exhaust lead-out system, steam exhaust is led out to enter the steam side of the high back pressure condenser. An exhaust steam branch of the small feed water pump turbine is connected with a pumping steam inlet of the steam increase machine. Exhaust steam of the steam increase machine enters the steam side of the steam increase machine condenser. The water side of the steam increase machine condenser is connected with the water side of the high back pressure condenser for water output. Back pressure decoupling of the big turbine and the small turbine is achieved, and the operation problem of the small feed water pump turbine is solved, equipment does not need to be modified; the adaptability of a heat supply system becomes more complete; and the waste heat recovering and recycling system can achieve operation and switching under different working conditions at the same time.

Description

technical field [0001] The invention belongs to the field of energy saving of power plants, and in particular relates to a waste heat recovery and utilization system of a feedwater pump steam turbine based on a steam booster. Background technique [0002] In order to reduce the loss at the cold end of thermal power plants or thermal power plants and save energy, some power plants have changed the unit (air-cooled or water-cooled unit) into a high back pressure operation unit. For example, the direct air-cooling unit of a certain power plant originally designed to operate at a back pressure of 15KPa. [0003] Its working principle is to use the exhaust steam extraction system to draw out a part of the exhaust steam (such as 60%) of the steam turbine, and transport it to the high back pressure condenser through the pipeline, raise the back pressure of the steam turbine to operate, and the high back pressure condenser is used as heating device application, used to heat the ret...

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): F01K17/02F01K11/02F01K13/02
CPCF01K11/02F01K13/02F01K17/02
Inventor 林咸钗
Owner UNI RISING BEIJING TECH CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com