Title:
EXHAUST STEAM WASTE HEAT RECOVERY HEAT SUPPLY SYSTEM FOR AIR COOLING UNIT OF LARGE-SCALE THERMAL POWER PLANT
Document Type and Number:
WIPO Patent Application WO/2019/201281
Kind Code:
A1
Abstract:
An exhaust steam waste heat recovery heat supply system for an air cooling unit of a large-scale thermal power plant. The air cooling unit of the large-scale thermal power plant comprises first and second steam turbines and corresponding steam condensing devices; the first and second steam turbines are respectively provided with first and second steam turbine low-pressure cylinders (1, 2) which are respectively connected to the corresponding steam condensing devices by means of a steam exhaust pipeline. The exhaust steam waste heat recovery heat supply system comprises first and second exhaust steam extraction systems and respectively corresponding first and second steam-increasing machines (7, 8), front condensers (9, 10), and steam-increasing machine condensers (11, 12). Both the two steam turbines respectively have independent exhaust steam extraction systems, exhaust steam extraction pipelines of the steam turbines being connected to the corresponding front condensers (9, 10); steam turbine exhaust steam having properly raised back pressure is introduced into housing sides of the front condensers (9, 10), and heat supply network backwater is introduced into water sides thereof; the exhaust steam extraction pipelines of the steam turbines are also connected to extraction steam inlets of the corresponding steam-increasing machines (7, 8), and steam turbine heat supply steam extraction connects a pipeline to power steam inlets of the steam-increasing machines (7, 8), so as to extract exhaust steam by means of heat supply steam extraction for pressurization; steam exhaust ports of the steam-increasing machines (7, 8) are connected to the corresponding steam-increasing machine condensers (11, 12); pressurized exhaust steam is introduced into the housing sides of the steam-increasing machine condensers (11, 12), and heat supply network backwater is introduced into the water sides thereof.
Inventors:
WULAN QIQIGE (CN)
Application Number:
PCT/CN2019/083081
Publication Date:
October 24, 2019
Filing Date:
April 17, 2019
Export Citation:
Assignee:
UNI RISING BEIJING TECH CO LTD (CN)
International Classes:
F24D3/10; F01K17/02; F01K21/00
Foreign References:
| CN107218093A | 2017-09-29 | |||
| CN107687663A | 2018-02-13 | |||
| CN107621002A | 2018-01-23 | |||
| CN204404310U | 2015-06-17 | |||
| CN107202356A | 2017-09-26 | |||
| JP2011196191A | 2011-10-06 | |||
| CN108644860A | 2018-10-12 |
Attorney, Agent or Firm:
BEIJING WEIZHENG PATENT AGENCY CO., LTD. (CN)
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