CN105698241B - A kind of method of 150MW high back pressures thermal power plant unit circulation pump of heat-supply network operation - Google Patents
A kind of method of 150MW high back pressures thermal power plant unit circulation pump of heat-supply network operation Download PDFInfo
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- CN105698241B CN105698241B CN201610062058.8A CN201610062058A CN105698241B CN 105698241 B CN105698241 B CN 105698241B CN 201610062058 A CN201610062058 A CN 201610062058A CN 105698241 B CN105698241 B CN 105698241B
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- heat
- supply network
- circulation pump
- steam
- supply
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- 238000000034 method Methods 0.000 title claims abstract description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 20
- 240000002853 Nelumbo nucifera Species 0.000 claims description 2
- 235000006508 Nelumbo nucifera Nutrition 0.000 claims description 2
- 235000006510 Nelumbo pentapetala Nutrition 0.000 claims description 2
- 238000010438 heat treatment Methods 0.000 description 7
- 230000005611 electricity Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 238000003303 reheating Methods 0.000 description 1
- 239000008400 supply water Substances 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 239000003643 water by type Substances 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
- F24D3/00—Hot-water central heating systems
- F24D3/02—Hot-water central heating systems with forced circulation, e.g. by pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
- F24D19/00—Details
- F24D19/10—Arrangement or mounting of control or safety devices
- F24D19/1006—Arrangement or mounting of control or safety devices for water heating systems
- F24D19/1009—Arrangement or mounting of control or safety devices for water heating systems for central heating
- F24D19/1015—Arrangement or mounting of control or safety devices for water heating systems for central heating using a valve or valves
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
- F24D3/00—Hot-water central heating systems
- F24D3/10—Feed-line arrangements, e.g. providing for heat-accumulator tanks, expansion tanks ; Hydraulic components of a central heating system
- F24D3/105—Feed-line arrangements, e.g. providing for heat-accumulator tanks, expansion tanks ; Hydraulic components of a central heating system pumps combined with multiple way valves
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
- F24D3/00—Hot-water central heating systems
- F24D3/10—Feed-line arrangements, e.g. providing for heat-accumulator tanks, expansion tanks ; Hydraulic components of a central heating system
- F24D3/1058—Feed-line arrangements, e.g. providing for heat-accumulator tanks, expansion tanks ; Hydraulic components of a central heating system disposition of pipes and pipe connections
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
- F24D2200/00—Heat sources or energy sources
- F24D2200/13—Heat from a district heating network
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
- F24D2220/00—Components of central heating installations excluding heat sources
- F24D2220/02—Fluid distribution means
- F24D2220/0271—Valves
Abstract
The present invention relates to thermal power plant unit cycle water running fields, particularly disclose a kind of method of high back pressure thermal power plant unit circulation pump of heat-supply network operation.The method of 150MW high back pressure thermal power plant unit circulation pump of heat-supply network operation, including it is connected in parallel the steam-operating circulation pump of heat-supply network of small turbine and condenser, it is characterised in that：The condenser be provided with the electronic circulation pump of heat-supply network in parallel with steam-operating circulation pump of heat-supply network on the heat supply network outlet conduit of steam-operating circulation pump of heat-supply network, the capacity of electronic circulation pump of heat-supply network and steam-operating circulation pump of heat-supply network is similar or identical.The configuration of the present invention is simple, reasonable design not only ensure that the safety of High Back Pressure Steam Turbine Units and heat network system operation when the first latter stage thermic load of heat supply is relatively low, also achieve maximizing the benefits in heat supply period factory, be suitable for wide popularization and application.
Description
Technical field
The present invention relates to thermal power plant unit cycle water running field, more particularly to a kind of high back pressure thermal power plant unit heat supply network recirculated waters
The method of pump operation.
Background technology
As country increases the management of atmosphere pollution, and the popularization to energy-saving and emission-reduction project, high back pressure recirculated water
Heat supply has been the emphasis energy-saving and emission-reduction project that power industry is promoted in central heating area.
High back pressure circulating water heating can effectively utilize the cold source energy of turbine discharge, improve Unit Economic benefit.Machine
After group carries out high back pressure circulating water heating transformation, heat supply period unit is run by " electricity determining by heat " mode, and unit electric load height takes
Certainly in load of heat.Heat source enterprise is energy-saving, and heat supply initial station circulation pump of heat-supply network uses pneumatic pump, is used in combination circulating pump small
Turbine discharge heats heat supply network recirculated water, since the steam discharge of circulation pump of heat-supply network heats hot net water, the operation of circulating pump small turbine
The thermic load of big steam turbine can be squeezed.In preliminary heating period and latter stage, heat supply influenced by ambient temperature meets relatively low, and area of heat-supply service is again
It is insufficient to greatly, cause improved high back pressure main steam turbine thermic load smaller, make steam turbine quivering in high back pressure low flow rate condition
Earthquake region is run, and hidden danger is brought to unit safety；And when steam turbine operation is under low flow rate condition, boiler load also drops therewith
It is low, even into oily operating condition is thrown, influence unit overall economy quality；In addition, working as pumps for hot water supply net small turbine fault trip
When, big steam turbine cycle water is reduced rapidly, and exhaust steam pressure is caused to rise rapidly, even big steam turbine can be caused to jump when serious
Lock.
Invention content
In order to compensate for the shortcomings of the prior art, the present invention provides it is a kind of it is easy to operate, using flexible, high financial profit
The method of 150MW high back pressure thermal power plant unit circulation pump of heat-supply network operation.
The present invention is achieved through the following technical solutions：
A kind of method of 150MW high back pressures thermal power plant unit circulation pump of heat-supply network operation, including be connected in parallel small turbine and
The steam-operating circulation pump of heat-supply network of condenser, it is characterised in that：The heat supply network outlet pipe of the condenser and steam-operating circulation pump of heat-supply network
The electronic circulation pump of heat-supply network in parallel with steam-operating circulation pump of heat-supply network, electronic circulation pump of heat-supply network and steam-operating heat supply network are provided on road
The capacity of water circulating pump is similar or identical；Just latter stage area of heat-supply service opens steam-operating heat supply network at 11,460,000 square metres or more for heat supply
Water circulating pump, electronic circulation pump of heat-supply network deactivate；At 11,460,000 square metres or less, steam-operating circulation pump of heat-supply network stops area of heat-supply service
With starting electronic circulation pump of heat-supply network；Area of heat-supply service increases to 228MW in 11,460,000 square metres or less, extraneous heat supply network thermic load
When, it opens steam-operating circulation pump of heat-supply network and closes electronic circulation pump of heat-supply network when heat supply network thermic load reaches 298MW.
The present invention is to solve heat supply first latter stage, and there are security risks and warp for the operation of high back pressure heat supply steam turbine when thermic load is low
The low problem of benefit of helping, design heat supply initial station is electronic, back-up system, increase and steam-operating heat supply network follow steam-operating circulation pump of heat-supply network each other
The electronic circulation pump of heat-supply network of the similar 8000t/h of ring water pump capacity.
The present invention more excellent scheme be：
Valve A, the valve B and the electronic heat of control of control steam-operating circulation pump of heat-supply network are provided on the heat supply network outlet conduit
Valve C, the valve D of net water circulating pump, convenient for the switching of two water circulating pumps of control.
The air intake of the condenser is connected to big gas turbine exhaust gas pipe, is heated by the steam discharge with steam turbine.
The configuration of the present invention is simple, reasonable design, not only ensure that heat supply just latter stage thermic load it is relatively low when High Back Pressure Steam Turbine Units and
The safety of heat network system operation, also achieves maximizing the benefits in heat supply period factory, is suitable for wide popularization and application.
Description of the drawings
The present invention will be further described below with reference to the drawings.
Fig. 1 is the equipment connection structure schematic diagram of the present invention.
In figure, 1 small turbine, 2 condensers, 3 steam-operating circulation pump of heat-supply network, 4 heat supply network outlet conduits, 5 electronic heat supply network cycles
Water pump, 6 valve A, 7 valve B, 8 valve C, 9 valve D.
Specific implementation mode
Attached drawing is a kind of specific embodiment of the present invention.The embodiment includes being connected in parallel small turbine 1 and condenser 2
Steam-operating circulation pump of heat-supply network 3, is provided on the heat supply network outlet conduit 4 of the condenser 2 and steam-operating circulation pump of heat-supply network 3 and steam-operating
The electronic circulation pump of heat-supply network 5 in parallel of circulation pump of heat-supply network 3, the appearance of electronic circulation pump of heat-supply network 5 and steam-operating circulation pump of heat-supply network 3
It measures similar or identical；Be provided on the heat supply network outlet conduit 4 control steam-operating circulation pump of heat-supply network 3 valve A6, valve B7 and
Control valve C8, the valve D9 of electronic circulation pump of heat-supply network 5；The air intake of the condenser 2 is connected to big turbine discharge pipe.
It being calculated according to unit balance chart, for 150MW units when 480t/h at full capacity is into vapour, maximum heating load is 228MW,
Just latter stage is empirically worth thermic load 26W/m for heat supply2Calculate, can area of heat-supply service be 8,760,000 square metres.Steam-operating circulation pump of heat-supply network 3
It is 70MW into vapour about 100t/h heat capacities, it is 2,700,000 square metres to convert into area of heat-supply service, in order to realize benefit maximum and guarantee machine
Group safety, heat supply just latter stage when area of heat-supply service is at 11,460,000 square metres or more, close valve C8, valve D9 Open valves A6 and
Valve B7, electronic circulation pump of heat-supply network 5 deactivate, and open steam-operating circulation pump of heat-supply network 3 and run, heat supply network quantity of circulating water runs 7900t/
h.150MW High Back Pressure Steam Turbine Units exhaust steam heat, which is all absorbed by heat supply network return water, at this time carries out primary heating, steam-operating circulation pump of heat-supply network 3
Steam discharge carries out reheating to hot net water, and according to the operating principle of electricity determining by heat, unit thermic load is with electric load all in completely negative
Lotus state, economy are best.
Latter stage area of heat-supply service is at 8,760,000 square metres or more at the beginning of heat supply, at 11,460,000 square metres or less, in order to realize effect
Beneficial maximum and guarantee unit safety, steam-operating circulation pump of heat-supply network 3 is deactivated at this time, starts the operation of electronic circulation pump of heat-supply network 5, closes
Valve A6 and valve B7, Open valve C8 and valve D9 only heat heat supply network recirculated water, to ensure high back pressure with big turbine discharge
Heat supply steam turbine safety and economy.
Latter stage area of heat-supply service is at 8,760,000 square metres or less at the beginning of heat supply, in order to realize benefit maximum and ensure unit peace
Entirely, steam-operating circulation pump of heat-supply network 3 deactivates at this time, starts the operation of electronic circulation pump of heat-supply network 5, closes valve A6 and valve B7, open
Valve C8 and valve D9 are opened, only heat supply network recirculated water is heated with big turbine discharge, to ensure high back pressure heat supply steam turbine safety
And economy.
When area of heat-supply service is at 11,460,000 square metres or less, electrically driven feed pump operation, steam-operating circulation pump of heat-supply network 3 is stopped transport.
Increase as weather gradually becomes cooling and heating load, when extraneous heat supply network thermic load increases to 228MW, at 150MW high back pressure steam turbines
In oepration at full load state, heat supply network thermic load continues growing when cannot meet heat supply and needing, in order to reduce other units
Coal consumption for power generation increases economic benefit, while ensureing high back pressure steam turbine oepration at full load, opens steam-operating circulation pump of heat-supply network
3 and valve A6, valve B7, and 5 flow of electronic circulation pump of heat-supply network is continuously decreased, when heat supply network thermic load reaches 298MW, vapour
Dynamic circulation pump of heat-supply network 3 replaces electronic circulation pump of heat-supply network 5 to run completely, closes valve C8 and valve D9.
It, each other again can be standby each other when electronic circulation pump of heat-supply network 5 and steam-operating circulation pump of heat-supply network 3 are individually run
With, break down stop transport when, quickly joined to ensure the safety of heat supply network and High Back Pressure Steam Turbine Units.
This operation method not only ensure that the operation of High Back Pressure Steam Turbine Units and heat network system when the first latter stage thermic load of heat supply is relatively low
Safety, also achieve maximizing the benefits in heat supply period factory.
Claims (2)
1. a kind of method of 150MW high back pressures thermal power plant unit circulation pump of heat-supply network operation, including it is connected in parallel small turbine（1）With
Condenser（2）Steam-operating circulation pump of heat-supply network（3）, it is characterised in that：The condenser（2）With steam-operating circulation pump of heat-supply network（3）
Heat supply network outlet conduit（4）On be provided with and steam-operating circulation pump of heat-supply network（3）Electronic circulation pump of heat-supply network in parallel（5）, electronic
Circulation pump of heat-supply network（5）With steam-operating circulation pump of heat-supply network（3）Capacity it is similar or identical；The first latter stage area of heat-supply service of heat supply is 1146
At ten thousand square metres or more, steam-operating circulation pump of heat-supply network is opened（3）, electronic circulation pump of heat-supply network（5）It deactivates；Area of heat-supply service is 1146
At ten thousand square metres or less, steam-operating circulation pump of heat-supply network（3）It deactivates, starts electronic circulation pump of heat-supply network（5）；Area of heat-supply service is 1146
Ten thousand square metres or less, extraneous heat supply network thermic load is when increasing to 228MW, open steam-operating circulation pump of heat-supply network（3）, until heat supply network heat is negative
When lotus reaches 298MW, electronic circulation pump of heat-supply network is closed（5）；The heat supply network outlet conduit（4）On be provided with control steam-operating heat supply network
Water circulating pump（3）Valve A（6）, valve B（7）With the electronic circulation pump of heat-supply network of control（5）Valve C（8）, valve D（9）.
2. the method for 150MW high back pressures thermal power plant unit circulation pump of heat-supply network operation according to claim 1, feature exist
In：The condenser（2）Air intake be connected to big gas turbine exhaust gas pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610062058.8A CN105698241B (en) | 2016-01-29 | 2016-01-29 | A kind of method of 150MW high back pressures thermal power plant unit circulation pump of heat-supply network operation |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610062058.8A CN105698241B (en) | 2016-01-29 | 2016-01-29 | A kind of method of 150MW high back pressures thermal power plant unit circulation pump of heat-supply network operation |
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| CN105698241A CN105698241A (en) | 2016-06-22 |
| CN105698241B true CN105698241B (en) | 2018-10-19 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3708915A1 (en) * | 2019-03-11 | 2020-09-16 | HögforsGST Oy | District-heating system and method for increasing consumer power |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108469017B (en) * | 2018-04-04 | 2023-09-15 | 浙江巨化热电有限公司 | Comprehensive utilization device and method for back pressure steam turbine of double-drag electric pump |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102095215A (en) * | 2011-03-16 | 2011-06-15 | 姚善新 | Prefabricated radiant heating system |
| CN103017231A (en) * | 2012-12-11 | 2013-04-03 | 华电电力科学研究院 | Heat supply network water circulating pump energy-saving driving system of thermal power plant |
| CN204404312U (en) * | 2014-12-31 | 2015-06-17 | 中国能源建设集团山西省电力勘测设计院有限公司 | The heat network system of efficiency utilization steam power plant heating steam |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000074397A (en) * | 1998-08-31 | 2000-03-14 | Noritz Corp | Hot-water heating device |
| JP2000193203A (en) * | 1998-12-22 | 2000-07-14 | Toshiba Eng Co Ltd | Steam turbine |
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- 2016-01-29 CN CN201610062058.8A patent/CN105698241B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102095215A (en) * | 2011-03-16 | 2011-06-15 | 姚善新 | Prefabricated radiant heating system |
| CN103017231A (en) * | 2012-12-11 | 2013-04-03 | 华电电力科学研究院 | Heat supply network water circulating pump energy-saving driving system of thermal power plant |
| CN204404312U (en) * | 2014-12-31 | 2015-06-17 | 中国能源建设集团山西省电力勘测设计院有限公司 | The heat network system of efficiency utilization steam power plant heating steam |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3708915A1 (en) * | 2019-03-11 | 2020-09-16 | HögforsGST Oy | District-heating system and method for increasing consumer power |
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| CN105698241A (en) | 2016-06-22 |
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