CN105927965A - Wide-load regenerative system and operating method thereof - Google Patents
Wide-load regenerative system and operating method thereof Download PDFInfo
- Publication number
- CN105927965A CN105927965A CN201610462872.9A CN201610462872A CN105927965A CN 105927965 A CN105927965 A CN 105927965A CN 201610462872 A CN201610462872 A CN 201610462872A CN 105927965 A CN105927965 A CN 105927965A
- Authority
- CN
- China
- Prior art keywords
- heating equipment
- pressure heater
- ancillary heating
- regenerative system
- oxygen
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22G—SUPERHEATING OF STEAM
- F22G1/00—Steam superheating characterised by heating method
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D15/00—Adaptations of machines or engines for special use; Combinations of engines with devices driven thereby
- F01D15/10—Adaptations for driving, or combinations with, electric generators
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22D—PREHEATING, OR ACCUMULATING PREHEATED, FEED-WATER FOR STEAM GENERATION; FEED-WATER SUPPLY FOR STEAM GENERATION; CONTROLLING WATER LEVEL FOR STEAM GENERATION; AUXILIARY DEVICES FOR PROMOTING WATER CIRCULATION WITHIN STEAM BOILERS
- F22D1/00—Feed-water heaters, i.e. economisers or like preheaters
- F22D1/32—Feed-water heaters, i.e. economisers or like preheaters arranged to be heated by steam, e.g. bled from turbines
- F22D1/34—Feed-water heaters, i.e. economisers or like preheaters arranged to be heated by steam, e.g. bled from turbines and returning condensate to boiler with main feed supply
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Engine Equipment That Uses Special Cycles (AREA)
Abstract
The invention discloses a wide-load regenerative system and an operating method thereof. The wide-load regenerative system comprises a steam turbine connected with an electric generator. The steam turbine is connected with a condenser and a boiler. A high-pressure heater is connected with a deaerator by virtue of a first auxiliary heating device. The condenser is connected with a second auxiliary heating device. The second auxiliary heating device is connected with the deaerator by virtue of a low-pressure heater. The steam turbine is connected with the first auxiliary heating device and the second auxiliary heating device by virtue of an auxiliary heating pipeline. When a unit is in operation under the part load ordinarily, the two auxiliary heating devices are not in operation, so that the operation economy of the unit is higher; when the power of the electric generator needs to be improved, condensed water is heated twice with main steam through the two auxiliary heating devices, so that the temperature of the condensed water is increased, and besides, the high-pressure heater and the low-pressure heater stops operation, steam is not extracted any more from the steam turbine, so that the purpose of improving the power of the electric generator is achieved, the peak load regulation capacity of a power grid is ensured, and the power consumption level under the long-term operation working condition is reduced.
Description
[technical field]
The invention belongs to power field, be specifically related to a kind of wide load heat regenerative system and method for work.
[background technology]
Existing Thermal System of Fossil Fuel-Fired Power Station is to be built by the capital equipments such as boiler, steam turbine, condenser, oxygen-eliminating device and heaters at different levels and pipeline.The superheated steam produced by boiler enters Steam Turbine, drives electromotor to produce electric energy.Condense water and enter boiler by heat regenerative system heating, complete the circulation between soda pop.Heat regenerative system puts in the range of full load, and systematic parameter does not makes any adjustments.Existing Steam Turbine production technology, generating energy consumption level increases with the reduction of electrical power, and power generation development of the situation trend, the demand of fired power generating unit peak regulation is more and more higher, and a lot of units, for a long time in operation at part load, cause industry entirety energy consumption to raise.And the rate of load condensate of operating unit is improved by reducing grid-connected unit capacity mode, thus reduce generating set entirety energy consumption, electrical network can be caused again to adapt to peak modulation capacity and to reduce, the reliability of the overall supply of electric power of impact society.
[summary of the invention]
It is an object of the invention to overcome above-mentioned deficiency, it is provided that a kind of wide load heat regenerative system and method for work, both ensure that the peak modulation capacity of electrical network, and made again longtime running operating mode energy consumption level reduce, and promoted power industry energy-saving and emission-reduction.
In order to achieve the above object, a kind of wide load heat regenerative system, including connecting the steam turbine having electromotor, steam turbine connects condenser and boiler, high-pressure heater connects oxygen-eliminating device by the first ancillary heating equipment, condenser connects the second ancillary heating equipment, and the second ancillary heating equipment connects oxygen-eliminating device by low-pressure heater, and steam turbine adds pipe line by auxiliary and connects the first ancillary heating equipment and the second ancillary heating equipment.
Described low-pressure heater connects the entrance of oxygen-eliminating device, and the outlet of oxygen-eliminating device connects the first ancillary heating equipment.
Described high-pressure heater uses the steam supply that draws gas.
Described low-pressure heater uses the steam supply that draws gas.
Described first ancillary heating equipment and the second ancillary heating equipment put into operation or out of service according to the requirement of generating set load height.
Described first ancillary heating equipment and the second ancillary heating equipment use surface heater, contact(-type) heater or the ejector etc. that draws gas.
The position of described high-pressure heater and the first ancillary heating equipment can be exchanged, and the position of low-pressure heater and the second ancillary heating equipment can be exchanged.
The method of work of a kind of wide load heat regenerative system, during usual operation at part load, the condensation water that condenser produces passes sequentially through low-pressure heater, oxygen-eliminating device and high-pressure heater and enters steam turbine；
If desired improve the power of electromotor, then the condensation water that condenser produces passes sequentially through the second ancillary heating equipment, oxygen-eliminating device and the first ancillary heating equipment and enters boiler.
Compared with prior art, the present invention arranges two ancillary heating equipment, and when the usual operation at part load of unit, the two equipment does not puts into operation, and unit operation economy is higher；And when needing the power improving electromotor, twice heating is carried out to condensing water by the two equipment utilization main steam, thus improve condensing water temperature, now high-pressure heater and low-pressure heater are out of service, no longer draw gas in steam turbine, reach to improve the purpose of generator power, both ensure that the peak modulation capacity of electrical network, make again longtime running operating mode energy consumption level reduce, promote power industry energy-saving and emission-reduction.
[accompanying drawing explanation]
Fig. 1 is the structural representation of the present invention.
[detailed description of the invention]
The present invention will be further described below in conjunction with the accompanying drawings.
nullSee Fig. 1，A kind of wide load heat regenerative system，Including connecting the steam turbine 1 having electromotor 8，Steam turbine 1 connects condenser 2 and boiler 9，High-pressure heater 3 connects oxygen-eliminating device 5 by the first ancillary heating equipment 4，Condenser 2 connects the second ancillary heating equipment 6，Second ancillary heating equipment 6 connects oxygen-eliminating device 5 by low-pressure heater 7，Steam turbine 1 adds pipe line by auxiliary and connects the first ancillary heating equipment 4 and the second ancillary heating equipment 6，Low-pressure heater 7 connects the entrance of oxygen-eliminating device 5，The outlet of oxygen-eliminating device 5 connects the first ancillary heating equipment 4，High-pressure heater 3 uses the steam supply that draws gas，Low-pressure heater 7 uses the steam supply that draws gas，First ancillary heating equipment 4 and the second ancillary heating equipment 6 put into operation or out of service according to the requirement of generating set load height，First ancillary heating equipment 4 and the second ancillary heating equipment 6 use surface heater、Contact(-type) heater or the ejector etc. that draws gas.
Preferably, the position of high-pressure heater 3 and the first ancillary heating equipment 4 can be exchanged, and the position of low-pressure heater 7 and the second ancillary heating equipment 6 can be exchanged.
The method of work of a kind of wide load heat regenerative system, during usual operation at part load, the condensation water that condenser 2 produces passes sequentially through low-pressure heater 7, oxygen-eliminating device 5 and high-pressure heater 3 and enters boiler 9；
If desired improve the power of electromotor 8, then the condensation water that condenser 2 produces passes sequentially through the second ancillary heating equipment 6, oxygen-eliminating device 5 and the first ancillary heating equipment 4 and enters boiler 9.
The present invention no longer draws gas to improve the power of the assembling unit in steam turbine, and utilizes ancillary heating equipment main steam to carry out heat-setting water.
Claims (8)
1. one kind wide load heat regenerative system, it is characterised in that include that connection has the steam turbine (1) of electromotor (8), steam turbine (1)
Connecting condenser (2) and boiler (9), high-pressure heater (3) connects oxygen-eliminating device (5) by the first ancillary heating equipment (4),
Condenser (2) connects the second ancillary heating equipment (6), and the second ancillary heating equipment (6) is connected by low-pressure heater (7)
Oxygen-eliminating device (5), steam turbine (1) adds pipe line by auxiliary and connects the first ancillary heating equipment (4) and the second ancillary heating equipment
(6)。
A kind of wide load heat regenerative system the most according to claim 1, it is characterised in that described low-pressure heater (7) connects
The entrance of oxygen-eliminating device (5), the outlet of oxygen-eliminating device (5) connects the first ancillary heating equipment (4).
A kind of wide load heat regenerative system the most according to claim 1, it is characterised in that described high-pressure heater (3) uses
Draw gas steam supply.
A kind of wide load heat regenerative system the most according to claim 1, it is characterised in that described low-pressure heater (7) uses
Draw gas steam supply.
A kind of wide load heat regenerative system the most according to claim 1, it is characterised in that described first ancillary heating equipment (4)
Put into operation or out of service according to the requirement of generating set load height with the second ancillary heating equipment (6).
A kind of wide load heat regenerative system the most according to claim 1, it is characterised in that described first ancillary heating equipment (4)
Surface heater, contact(-type) heater or the ejector etc. that draws gas is used with the second ancillary heating equipment (6).
A kind of wide load heat regenerative system the most according to claim 1, it is characterised in that described high-pressure heater (3) and the
The position of one ancillary heating equipment (4) can be exchanged, low-pressure heater (7) and the position energy of the second ancillary heating equipment (6)
Enough exchanges.
8. the method for work of a kind of wide load heat regenerative system described in claim 1, it is characterised in that operation at part load usually
Time, the condensation water that condenser (2) produces directly passes sequentially through low-pressure heater (7), oxygen-eliminating device (5) and high-pressure heater (3)
Enter boiler (9)；
If desired improve the power of electromotor (8), then the condensation water that condenser (2) produces passes sequentially through the second ancillary heating equipment
(6), oxygen-eliminating device (5) and the first ancillary heating equipment (4) enter boiler (9), now high-pressure heater (3) and low pressure add
Hot device (4) is out of service.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610462872.9A CN105927965B (en) | 2016-06-22 | 2016-06-22 | A kind of wide load heat regenerative system and method for work |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610462872.9A CN105927965B (en) | 2016-06-22 | 2016-06-22 | A kind of wide load heat regenerative system and method for work |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105927965A true CN105927965A (en) | 2016-09-07 |
| CN105927965B CN105927965B (en) | 2018-01-16 |
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ID=56831603
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610462872.9A Active CN105927965B (en) | 2016-06-22 | 2016-06-22 | A kind of wide load heat regenerative system and method for work |
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| Country | Link |
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| CN (1) | CN105927965B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110360540A (en) * | 2019-07-22 | 2019-10-22 | 国网吉林省电力有限公司电力科学研究院 | The Boiler Steam Temperature Control method of power grid AGC load instruction frequent fluctuation |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61110877A (en) * | 1984-11-02 | 1986-05-29 | Hitachi Ltd | Vacuum pump for condenser |
| CN101696643A (en) * | 2009-10-30 | 2010-04-21 | 北京联合优发能源技术有限公司 | Low-temperature heat energy recovering apparatus of heat and electricity co-generation and recovering method thereof |
| CN203097968U (en) * | 2013-02-03 | 2013-07-31 | 成都酷玩网络科技有限公司 | Thermal system of generator set |
| CN204962711U (en) * | 2015-08-13 | 2016-01-13 | 浙江浙能技术研究院有限公司 | Supercritical unit or super supercritical unit do not have oxygen -eliminating device heat regenerative system |
| CN205172659U (en) * | 2015-11-09 | 2016-04-20 | 华北电力大学（保定） | Synthesize refrigerated double reheat unit thermodynamic system |
| CN205678656U (en) * | 2016-06-22 | 2016-11-09 | 西安热工研究院有限公司 | A kind of wide load heat regenerative system |
-
2016
- 2016-06-22 CN CN201610462872.9A patent/CN105927965B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61110877A (en) * | 1984-11-02 | 1986-05-29 | Hitachi Ltd | Vacuum pump for condenser |
| CN101696643A (en) * | 2009-10-30 | 2010-04-21 | 北京联合优发能源技术有限公司 | Low-temperature heat energy recovering apparatus of heat and electricity co-generation and recovering method thereof |
| CN203097968U (en) * | 2013-02-03 | 2013-07-31 | 成都酷玩网络科技有限公司 | Thermal system of generator set |
| CN204962711U (en) * | 2015-08-13 | 2016-01-13 | 浙江浙能技术研究院有限公司 | Supercritical unit or super supercritical unit do not have oxygen -eliminating device heat regenerative system |
| CN205172659U (en) * | 2015-11-09 | 2016-04-20 | 华北电力大学（保定） | Synthesize refrigerated double reheat unit thermodynamic system |
| CN205678656U (en) * | 2016-06-22 | 2016-11-09 | 西安热工研究院有限公司 | A kind of wide load heat regenerative system |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110360540A (en) * | 2019-07-22 | 2019-10-22 | 国网吉林省电力有限公司电力科学研究院 | The Boiler Steam Temperature Control method of power grid AGC load instruction frequent fluctuation |
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| Publication number | Publication date |
|---|---|
| CN105927965B (en) | 2018-01-16 |
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