CN207989089U - A kind of efficient heating system of cogeneration units recycling heat release based on condensed water - Google Patents
A kind of efficient heating system of cogeneration units recycling heat release based on condensed water Download PDFInfo
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- CN207989089U CN207989089U CN201820119533.5U CN201820119533U CN207989089U CN 207989089 U CN207989089 U CN 207989089U CN 201820119533 U CN201820119533 U CN 201820119533U CN 207989089 U CN207989089 U CN 207989089U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/14—Combined heat and power generation [CHP]
Abstract
The utility model discloses a kind of efficient heating systems of cogeneration units recycling heat release based on condensed water for belonging to heat supply process field.The system includes mainly boiler, steam turbine high-pressure cylinder, the parts such as Steam Turbine Through IP Admission, turbine low pressure cylinder, low add-back hot systems, heat exchangers for district heating, water water- to-water heat exchanger.The system heats part heat supply network return water by water water- to-water heat exchanger using relatively low level-one low-pressure heater outlet condensed water, and the condensed water after heat exchange returns condensate pump outlet conduit；Another part heat supply network return water is heated using Steam Turbine Through IP Admission heat supply steam extraction simultaneously, condenser outlet is returned for thermal drain.The utility model exports condensed water by using the low-pressure heater of relatively low level-one, and the tow taste heat of condensed water is rationally utilized, can be effectively reduced the steam extraction amount of high-grade intermediate pressure cylinder steam discharge.Meanwhile the lower heat supply drain recovery of temperature being met Temperature Matching principle, reducing damage, realizing the cascade utilization of energy on the whole, achieved the effect that energy-saving to the condenser exit with its temperature close.
Description
Technical field
The utility model belongs to heat supply process field, more particularly to a kind of cogeneration of heat and power machine recycling heat release based on condensed water
The efficient heating system of group.
Background technology
As China requires higher and higher to energy-efficient, many power plant reduce coal consumption, gradually in order to meet national standard
Develop towards the direction of cogeneration of heat and power, it can be that resident concentrates confession in winter that especially many power plant of northern China, which are all transformed into,
The steam power plant of heat.The benefit of steam power plant is generated electricity using high-grade steam in heat supply period, is collected using low-grade steam
Middle heat supply reduces the cold end loss of a part of steam, realizes the energy saving principle of " temperature counterpart, cascade utilization ", thermoelectricity connection
The capacity usage ratio of power plant can be greatly improved by producing the pattern of this reasonable energy, and coal consumption is made to be minimized.
However the heat supply mode of steam power plant has prodigious room for improvement there is also many unreasonable places at present.China
The steam power plant in the north, which generally uses, directly utilizes intermediate pressure cylinder steam discharge to heat hot net water, and the hydrophobic pumping for returning oxygen-eliminating device is coagulated and is supplied
The mode of heat.This heat-supplying mode will be far longer than the grade of hot net water due to the grade of intermediate pressure cylinder steam discharge, intermediate pressure cylinder steam discharge with
There are the unmatched problems of energy level when heat supply network return water exchanges heat, and cause the loss of unit intermediate pressure cylinder heat supply steam extraction high-grade energy,
Unit output is set to reduce, efficiency is relatively low, meanwhile, there is also the larger temperature difference for the hydrophobic and oxygen-eliminating device water after heat exchange, hydrophobic straight
Certain damage can be caused into oxygen-eliminating device by taking.Therefore existing take out coagulates heat supply also with prodigious energy-saving potential, to heat supply system
System is improved, and makes each section Temperature Matching as possible, and the damage that it exchanges heat is made to reduce, and is to improve unit efficiency, is reduced energy consumption
Effective way.
The utility model proposes export condensed water by water water- to-water heat exchanger to portion by using relatively low level-one low-pressure heater
Heat supply network return water is divided to be heated, the condensed water after heat exchange returns condensate pump outlet conduit；It is supplied simultaneously using Steam Turbine Through IP Admission
Another part heat supply network return water is heated in hot steam extraction, and condenser outlet is returned for thermal drain.The utility model is low using relatively low level-one
Heater outlet condensed water is pressed, the tow taste heat of condensed water is rationally utilized, can effectively reduce high-grade intermediate pressure cylinder heat supply
The steam extraction amount of steam extraction, while the lower heat supply drain recovery of temperature being met to the condenser exit with its temperature close
Temperature Matching principle, reduces damage, realizes the cascade utilization of energy on the whole, has achieved the purpose that power plant for energy conservation.
Invention content
The purpose of this utility model is to lead to unit high-grade energy using solidifying heat supply is taken out for current northern China steam power plant
It is the problems such as amount loss, energy utilization is unreasonable, and efficiency is relatively low, a kind of solidifying using the outlet of relatively low level-one low-pressure heater by proposing
It bears water and part heat supply network return water is heated, the condensed water after heat exchange returns condensate pump outlet conduit；Steam turbine is utilized simultaneously
Intermediate pressure cylinder heat supply steam extraction adds another part heat supply network return water, and condenser outlet is returned for thermal drain.The utility model by using
The low-pressure heater of relatively low level-one exports condensed water, and the tow taste heat of condensed water is rationally utilized, can effectively reduce Gao Pin
The steam extraction amount of position intermediate pressure cylinder steam discharge, while the lower heat supply drain recovery of temperature being exported to the condenser of its temperature close
Place, meets Temperature Matching principle, reduces damage, realize the cascade utilization of energy on the whole, unit greatly improved
Capacity usage ratio.
In order to achieve the above objectives, the utility model uses following technical scheme：
It is a kind of based on condensed water recycle heat release the efficient heating system of cogeneration units, the system mainly include boiler,
Steam turbine high-pressure cylinder, Steam Turbine Through IP Admission, turbine low pressure cylinder, #6 low-pressure heaters, #7 low-pressure heaters, heat exchangers for district heating,
Water water- to-water heat exchanger；The boiler export steam enter steam turbine high-pressure cylinder acting, steam turbine high-pressure cylinder steam discharge enter boiler into
Steam Turbine Through IP Admission, turbine low pressure cylinder are sequentially entered after row reheating, turbine low pressure cylinder steam exhaust is condensed by condenser, condensation
Condensed water afterwards is ultimately destined for high add-back hot systems followed by condensate pump, low add-back hot systems, oxygen-eliminating device, feed pump；Institute
The Steam Turbine Through IP Admission steam discharge stated is divided into three strands, and the #5 low-pressure heaters in the low add-back hot systems of first burst of entrance heat water supply,
Second strand enters heat exchangers for district heating by the first control valve and heats heat supply network return water, and the hydrophobic condenser that returns to after heat exchange exports, the
Three strands then by entering low pressure (LP) cylinder acting mesolow cylinder communicating pipe；The #6 low-pressure heaters and #7 low-pressure heaters export to
Water by after No.1 water pump, the pressurization of No. two water pumps by the second control valve third control valve enter water water- to-water heat exchanger to heat supply network return water into
Row heating, the condensed water after heat exchange return to condensate pump outlet；The heat supply network return water is divided into two strands and is respectively heated, one
Into water water- to-water heat exchanger, another strand enters heat exchangers for district heating.
The first control valve control Steam Turbine Through IP Admission heat supply steam extraction enters the flow of heat exchangers for district heating, the second control
Valve control #6 low-pressure heaters outlet condensed water enters the flow of water water- to-water heat exchanger, and third control valve control #7 low-pressure heaters go out
Mouth condensed water enters the flow of water water- to-water heat exchanger, wherein heat exchangers for district heating takes connection type in parallel with water water- to-water heat exchanger.
It is described in unit heat supply period, open the second control valve and third control valve, #6 low-pressure heaters add with #7 low pressure
Hot device outlet condensed water enters water water- to-water heat exchanger and is heated to part heat supply network return water；The first control valve, steam turbine are opened simultaneously
Intermediate pressure cylinder heat supply steam extraction enters heat exchangers for district heating and is heated to another part heat supply network return water.
The utility model has the following advantages and advantageous effect：In unit heat supply period, relatively low level-one low-pressure heating is utilized
Device outlet condensed water heats hot net water, and the tow taste heat of a part of condensed water is rationally utilized, recycles intermediate pressure cylinder
Steam discharge heats hot net water, meets heat demand；Reduce the steam extraction amount of high-grade intermediate pressure cylinder steam discharge using condensed water,
It condenses water temperature simultaneously to be more nearly with heat supply network water temperature, reduces the damage that cold fluid and hot fluid mixing generates, realize the step of energy
It utilizes, improves unit efficiency and capacity usage ratio, units consumption is made to be minimized.
Description of the drawings
Fig. 1 is a kind of efficient heating system of cogeneration units recycling heat release based on condensed water
In figure：1-boiler；2-steam turbine high-pressure cylinders；3-Steam Turbine Through IP Admissions；4-turbine low pressure cylinders；5-condensers；6–
Condensate pump；7-oxygen-eliminating devices；8-feed pumps；9-water water- to-water heat exchangers；10-heat exchangers for district heatings；11-1 high-pressure heaters；12-#2 are high
Press heater；13-#3 high-pressure heaters；14-#5 low-pressure heaters；15-#6 low-pressure heaters；16-#7 low-pressure heaters；17–#
8 low-pressure heaters；18-the first control valves；19-No.1 water pumps；20-No. two water pumps；21-the second control valves；22-thirds control
Valve；23-the four control valves；24-mesolow cylinder unicom pipelines.
Specific implementation mode
The utility model provides a kind of efficient heating system of cogeneration units recycling heat release based on condensed water, below
This system operation principle is described further in conjunction with the drawings and specific embodiments.
Fig. 1 is a kind of efficient heating system schematic diagram of cogeneration units recycling heat release based on condensed water
A kind of efficient heating system of cogeneration units recycling heat release based on condensed water, which is characterized in that system master
To add including boiler 1, steam turbine high-pressure cylinder 2, Steam Turbine Through IP Admission 3, turbine low pressure cylinder 4, #6 low-pressure heaters 15, #7 low pressure
Hot device 16, heat exchangers for district heating 10, water water- to-water heat exchanger 9；1 outlet vapor of boiler enters the acting of steam turbine high-pressure cylinder 2, steamer
2 steam discharge of machine high pressure cylinder, which enters after boiler 1 carries out reheating, sequentially enters Steam Turbine Through IP Admission 3, turbine low pressure cylinder 4, and steam turbine is low
4 steam exhaust of cylinder pressure is condensed by condenser 5, and condensed condensed water is followed by condensate pump 6, low add-back hot systems, oxygen-eliminating device
7, feed pump 8 are ultimately destined for high add-back hot systems；3 steam discharge of Steam Turbine Through IP Admission is divided into three strands, and first burst of entrance is low to be added
#5 low-pressure heaters 14 in heat regenerative system heat water supply, and second strand enters heat exchangers for district heating 10 by the first control valve 18 and heat
Heat supply network return water, the hydrophobic condenser 5 that returns to after heat exchange export, and third stock then enters low pressure (LP) cylinder 4 by mesolow cylinder communicating pipe 24
Acting；The #6 low-pressure heaters 15 and #7 low-pressure heaters 16 export water supply and are pressurizeed by 19, No. two water pumps 20 of No.1 water pump
Enter water water- to-water heat exchanger 9 by the second control valve 21 and third control valve 22 afterwards to heat heat supply network return water, it is solidifying after heat exchange
It bears water and returns to the outlet of condensate pump 6；The heat supply network return water is divided into two strands and is respectively heated, one enters water water- to-water heat exchanger 9,
Another strand enters heat exchangers for district heating 10.
2. a kind of efficient heat supply system of cogeneration units recycling heat release based on condensed water according to claim 1
System, which is characterized in that the control 3 heat supply steam extraction of Steam Turbine Through IP Admission of the first control valve 18 enters the flow of heat exchangers for district heating 10, the
Two control valves 21 control #6 low-pressure heaters 15 export the flow that condensed water enters water water- to-water heat exchanger 9, and third control valve 22 controls #
7 low-pressure heaters 16 outlet condensed water enters the flow of water water- to-water heat exchanger 9, wherein heat exchangers for district heating 10 is adopted with water water- to-water heat exchanger 9
Take connection type in parallel.
3. a kind of efficient heat supply system of cogeneration units recycling heat release based on condensed water according to claim 1
System, which is characterized in that in unit heat supply period, open the second control valve 21 and third control valve 22, #6 low-pressure heaters 15 and #7
The outlet of low-pressure heater 16 condensed water enters water water- to-water heat exchanger 9 and is heated to part heat supply network return water；The first control is opened simultaneously
Valve 18,3 heat supply steam extraction of Steam Turbine Through IP Admission enter heat exchangers for district heating 10 and are heated to another part heat supply network return water.
Its course of work is：In unit heat supply period, the second control valve 19 and third control valve 20, #6 low-pressure heaters are opened
15 enter water water- to-water heat exchanger 9 with the outlet of #7 low-pressure heaters 16 condensed water heats heat supply network return water, opens the first control valve
18,3 heat supply steam extraction of Steam Turbine Through IP Admission enters heat exchangers for district heating 10 and is heated to heat supply network return water, and the heat supply network water supply after heating is straight
It picks toward heat user.According to the aperture of the second control valve of variation flexible modulation 21 and third control valve 22 of heating demand, control
The condensing water flow extracted by #6 low-pressure heaters 15 and the outlet of #7 low-pressure heaters 16, rationally efficiently utilizes low add-back heat system
The heat of system condensed water, adjusts the aperture of the first control valve 18,3 heat supply extraction flow of Steam Turbine Through IP Admission is controlled, to meet confession
Heat demand.
The above embodiment is not limitations of the present invention, and those skilled in the art are in the utility model
Technical proposal scope in the variations, modifications, additions or substitutions made, also belong to the scope of protection of the utility model.
Claims (3)
1. a kind of efficient heating system of cogeneration units recycling heat release based on condensed water, which is characterized in that the system is main
Including boiler (1), steam turbine high-pressure cylinder (2), Steam Turbine Through IP Admission (3), turbine low pressure cylinder (4), #6 low-pressure heaters
(15), #7 low-pressure heaters (16), heat exchangers for district heating (10), water water- to-water heat exchanger (9)；Described boiler (1) outlet vapor enters
Steam turbine high-pressure cylinder (2) does work, and steam turbine high-pressure cylinder (2) steam discharge, which enters after boiler (1) carries out reheating, to be sequentially entered in steam turbine
Cylinder pressure (3), turbine low pressure cylinder (4), turbine low pressure cylinder (4) steam exhaust by condenser (5) condense, condensed condensed water according to
It is secondary to flow through condensate pump (6), low add-back hot systems, oxygen-eliminating device (7), feed pump (8), it is ultimately destined for high add-back hot systems；It is described
Steam Turbine Through IP Admission (3) steam discharge be divided into three strands, the heating of #5 low-pressure heaters (14) in the low add-back hot systems of first burst of entrance
Water supply, second strand enters heat exchangers for district heating (10) by the first control valve (18) and heats heat supply network return water, and hydrophobic after heat exchange returns to
Condenser (5) exports, and third stock is then done work by mesolow cylinder communicating pipe (24) into turbine low pressure cylinder (4)；The #6
Low-pressure heater (15) exports water supply by passing through after No.1 water pump (19), No. two water pump (20) pressurizations with #7 low-pressure heaters (16)
Second control valve (21) and third control valve (22) heat heat supply network return water into water water- to-water heat exchanger (9), solidifying after heat exchange
It bears water and returns to condensate pump (6) outlet；The heat supply network return water is divided into two strands and is respectively heated, one enters water water- to-water heat exchanger
(9), enter heat exchangers for district heating (10) for another strand.
2. a kind of efficient heating system of cogeneration units recycling heat release based on condensed water according to claim 1,
It being characterized in that, the first control valve (18) control Steam Turbine Through IP Admission (3) heat supply steam extraction enters the flow of heat exchangers for district heating (10), the
Two control valves (21) control #6 low-pressure heaters (15) export the flow that condensed water enters water water- to-water heat exchanger (9), third control valve
(22) control #7 low-pressure heaters (16) export the flow that condensed water enters water water- to-water heat exchanger (9), wherein heat exchangers for district heating (10)
Connection type in parallel is taken with water water- to-water heat exchanger (9).
3. a kind of efficient heating system of cogeneration units recycling heat release based on condensed water according to claim 1,
It is characterized in that, in unit heat supply period, opens the second control valve (21) and third control valve (22), #6 low-pressure heaters (15) and #7
Low-pressure heater (16) outlet condensed water enters water water- to-water heat exchanger (9) and is heated to part heat supply network return water；First is opened simultaneously
Control valve (18), Steam Turbine Through IP Admission (3) heat supply steam extraction enter heat exchangers for district heating (10) and add to another part heat supply network return water
Heat.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201820119533.5U CN207989089U (en) | 2018-01-24 | 2018-01-24 | A kind of efficient heating system of cogeneration units recycling heat release based on condensed water |
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| CN201820119533.5U CN207989089U (en) | 2018-01-24 | 2018-01-24 | A kind of efficient heating system of cogeneration units recycling heat release based on condensed water |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109855082A (en) * | 2019-02-02 | 2019-06-07 | 华电电力科学研究院有限公司 | A kind of efficient low-pressure heater draining system and its application method |
| CN111520203A (en) * | 2020-04-09 | 2020-08-11 | 华电电力科学研究院有限公司 | Steam turbine body and heat recovery system integrated comprehensive efficiency improving system and method under steam parameter improving condition |
| CN111780198A (en) * | 2020-07-15 | 2020-10-16 | 西安热工研究院有限公司 | Thermoelectric load wide-range adjusting system for water supply and temperature reduction heat supply |
| CN113404563A (en) * | 2021-06-18 | 2021-09-17 | 东方电气集团东方汽轮机有限公司 | Low-pressure cylinder cutting heat supply unit low-heating and back-heating system |
| CN113899006A (en) * | 2021-11-09 | 2022-01-07 | 东北电力大学 | Heating system for driving heat pump to recover circulating water waste heat by utilizing low-pressure heater and drainage water |
| CN114076303A (en) * | 2021-10-20 | 2022-02-22 | 华电电力科学研究院有限公司 | System and method for heating condensed water of main engine by using waste heat of steam condensed water externally supplied by industrial heat supply |
| CN114216116A (en) * | 2021-10-19 | 2022-03-22 | 江苏理文造纸有限公司 | Low-grade waste heat recovery method for steam turbine |
-
2018
- 2018-01-24 CN CN201820119533.5U patent/CN207989089U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109855082A (en) * | 2019-02-02 | 2019-06-07 | 华电电力科学研究院有限公司 | A kind of efficient low-pressure heater draining system and its application method |
| CN111520203A (en) * | 2020-04-09 | 2020-08-11 | 华电电力科学研究院有限公司 | Steam turbine body and heat recovery system integrated comprehensive efficiency improving system and method under steam parameter improving condition |
| CN111780198A (en) * | 2020-07-15 | 2020-10-16 | 西安热工研究院有限公司 | Thermoelectric load wide-range adjusting system for water supply and temperature reduction heat supply |
| CN111780198B (en) * | 2020-07-15 | 2022-02-11 | 西安热工研究院有限公司 | Thermoelectric load wide-range adjusting system for water supply and temperature reduction heat supply |
| CN113404563A (en) * | 2021-06-18 | 2021-09-17 | 东方电气集团东方汽轮机有限公司 | Low-pressure cylinder cutting heat supply unit low-heating and back-heating system |
| CN114216116A (en) * | 2021-10-19 | 2022-03-22 | 江苏理文造纸有限公司 | Low-grade waste heat recovery method for steam turbine |
| CN114076303A (en) * | 2021-10-20 | 2022-02-22 | 华电电力科学研究院有限公司 | System and method for heating condensed water of main engine by using waste heat of steam condensed water externally supplied by industrial heat supply |
| CN113899006A (en) * | 2021-11-09 | 2022-01-07 | 东北电力大学 | Heating system for driving heat pump to recover circulating water waste heat by utilizing low-pressure heater and drainage water |
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Granted publication date: 20181019 Termination date: 20220124 |