CN206626980U - Air-cooled Unit high back pressure circulating water heating winterization system - Google Patents

Air-cooled Unit high back pressure circulating water heating winterization system Download PDF

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Publication number
CN206626980U
CN206626980U CN201720315138.XU CN201720315138U CN206626980U CN 206626980 U CN206626980 U CN 206626980U CN 201720315138 U CN201720315138 U CN 201720315138U CN 206626980 U CN206626980 U CN 206626980U
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China
Prior art keywords
air
valve
heat supply
blow
exhaust device
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CN201720315138.XU
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Inventor
胡赛群
丁志波
宋艳峰
梁建军
周桥
高鹏
宋涛
龙连杰
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Hua Electricity Xinjiang Changji Steam Power Plant Of Electricity Generating Corp Ltd
SHANDONG HONGAO ELECTRIC POWER TECHNOLOGY Co Ltd
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Hua Electricity Xinjiang Changji Steam Power Plant Of Electricity Generating Corp Ltd
SHANDONG HONGAO ELECTRIC POWER TECHNOLOGY Co Ltd
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    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P80/00Climate change mitigation technologies for sector-wide applications
    • Y02P80/10Efficient use of energy, e.g. using compressed air or pressurized fluid as energy carrier

Abstract

Air-cooled Unit heat supply process field is the utility model is related to, particularly discloses a kind of Air-cooled Unit high back pressure circulating water heating winterization system.The Air-cooled Unit high back pressure circulating water heating winterization system, including heat supply condenser, it is characterised in that:The heat supply condenser is connected in parallel with steam exhaust device 1, steam exhaust device 2 respectively, valve 5 and valve 6 are installed on No. 1 blow-off line being connected 1 of heat supply condenser and steam exhaust device, valve 7 and valve 8 are installed on No. 2 blow-off lines being connected 2 of heat supply condenser and steam exhaust device, blow-off line 1 No. 2 with blow-off line is connected by bypass duct, and valve 3 and valve 4 are provided with bypass duct.The utility model is simple in construction; it is safe for operation, on the basis of can having peak load regulation network ability and heat supply network extremely non-stop-machine ensureing unit, effectively avoid unit Air-Cooling Island bursting by freezing risk; the heat for reclaiming the antifreeze steam of unit simultaneously feeds to heat user, increases Business Economic Benefit.

Description

Air-cooled Unit high back pressure circulating water heating winterization system
(One)Technical field
Air-cooled Unit heat supply process field is the utility model is related to, more particularly to a kind of Air-cooled Unit high back pressure recirculated water supplies Hot winterization system.
(Two)Background technology
The production process of condensing-type coal-burning power plant is that the steam of HTHP is produced using boiler combustion, and pushing turbine is done Work(is generated electricity, and the exhaust steam after steam turbine acting needs to be cooled to condensate through steam turbine condensing equipment, then by condensate pump Send therrmodynamic system back to and complete circulation.The cooling system of Direct Air-cooled Unit is arranged using air as cooling medium condensing turbine Vapour.Air-cooled Unit in the winter time environment temperature less than 0 DEG C operation when, easily occur Air-Cooling Island freeze failure, especially unit starting, Stoppage in transit stage and performing low-load running of machine set stage.The various bad working environments that must be directed to winter unit operation in operation are formulated accordingly Measure, prevent Air-Cooling Island from freezing and destroy cooling tube bundle.
After Air-cooled Unit carries out high back pressure circulating water heating reducing energy consumption, traditional design reserves two row Air-Cooling Islands as row Vapour is standby, and remaining four row is all stopped transport, and unit does not shut down operation during for meeting that peak load regulation network requirement and heat supply network break down. This two row Air-Cooling Island turns into antifreeze emphasis during high back pressure thermal power plant unit winter operation, and money is provided according to Air-Cooling Island equipment manufacturer Material, when environment temperature is -10 DEG C, the minimum antifreeze steam flow of two row Air-Cooling Islands is 122t/h;When environment temperature is -15 DEG C When, the minimum antifreeze steam flow of two row Air-Cooling Islands is 133t/h, and high back pressure thermal power plant unit longtime running enters empty in a large amount of steam Under the operating mode of cool island, energy waste is caused.
(Three)The content of the invention
The utility model is in order to make up the deficiencies in the prior art, there is provided a kind of simple in construction, safe for operation, energy-saving Air-cooled Unit high back pressure circulating water heating winterization system.
The utility model is achieved by the following technical solution:
A kind of Air-cooled Unit high back pressure circulating water heating winterization system, including heat supply condenser, it is characterised in that:The confession Hot condenser is connected in parallel with Air-Cooling Island 1, Air-Cooling Island 2 respectively, No. 1 blow-off line being connected of heat supply condenser and Air-Cooling Island The valve 5 and valve 6 of series connection, heat supply condenser and the upper peace of the blow-off line being connected 2 of Air-Cooling Island 2 are installed on No. 1 Valve equipped with series connection 7 and valve 8, blow-off line 1 No. 2 with blow-off line are connected by bypass duct, bypass duct On the valve 3 and valve 4 of series connection are installed.
In the utility model, two unit Air-Cooling Islands connect a heat supply condenser, and two connection heat supply condensings simultaneously Valve is set respectively on the blow-off line of device.During Winter heat supply, wherein the Air-Cooling Island of a unit communicates with heat supply condenser, separately One conduct is standby, and installs bypass duct additional on the blow-off line valve of heat supply condenser, and sets two valves.
More excellent technical scheme of the present utility model is:
No. 1 connection steam exhaust device 1 of the Air-Cooling Island, and be provided with both connecting pipes close to Air-Cooling Island 1 Valve 1, steam exhaust device 1 are connected in parallel blow-off line 1 with Air-Cooling Island 1, realize steam exhaust device 1, Air-Cooling Island 1 With the flexible connection between heat supply condenser three.
No. 2 connection steam exhaust devices 2 of the Air-Cooling Island, and be provided with both connecting pipes close to Air-Cooling Island 2 Valve 2, steam exhaust device 2 are connected in parallel blow-off line 2 with Air-Cooling Island 2, realize steam exhaust device 2, Air-Cooling Island 2 With the flexible connection between heat supply condenser three.
The valve 3 is electric control valve with valve 4, realizes the Automated condtrol of two valves.
The utility model is simple in construction, safe for operation, can have peak load regulation network ability and heat supply network abnormal ensureing unit On the basis of non-stop-machine, unit Air-Cooling Island bursting by freezing risk is effectively avoided, while the heat for reclaiming the antifreeze steam of unit feeds to hot use Family, increase Business Economic Benefit.
(Four)Brief description of the drawings
The utility model is further described below in conjunction with the accompanying drawings.
Fig. 1 is structural representation of the present utility model.
In figure, 1 heat supply condenser, 2 steam exhaust devices 1,3 steam exhaust devices 2,4 valves 1,5 valves 2,6 valves 3 Number, 7 valves 4,8 valves 5,9 valves 6,10 valves 7,11 valves 8,12 Air-Cooling Islands 1,13 Air-Cooling Islands 2.
(Five)Embodiment
Accompanying drawing is a kind of specific embodiment of the present utility model.The embodiment includes heat supply condenser 1, the heat supply condensing Device 1 is connected in parallel for No. 2 13 with Air-Cooling Island No. 1 12, Air-Cooling Island respectively, No. 1 12 gland steam exhauster being connected of heat supply condenser 1 and Air-Cooling Island The valve No. 58 and valve No. 69 of series connection, the blow-off line 2 that heat supply condenser 1 is connected for No. 2 13 with Air-Cooling Island are installed on road 1 The valve No. 7 10 and valve No. 8 11 of series connection are installed, blow-off line 1 and blow-off line 2 are connected by bypass duct on number Connect, the valve No. 36 and valve No. 47 of series connection are installed on bypass duct;Described No. 1 12 connection steam exhaust device No. 12 of Air-Cooling Island, And the valve No. 14 close to Air-Cooling Island No. 1 12 is installed on both connecting pipe, steam exhaust device No. 12 and Air-Cooling Island No. 1 12 are simultaneously Connection connection blow-off line 1;Described No. 2 13 connection steam exhaust devices No. 23 of Air-Cooling Island, and be provided with and connect on both connecting pipes The valve that near-space cool island is No. 2 13 No. 25, steam exhaust device are connected in parallel blow-off line 2 for No. 2 13 for No. 23 with Air-Cooling Island;The valve No. 36 and valve No. 47 are electric control valve.
During Winter heat supply, if steam exhaust device is run for No. 12 in pure condensate, No. 14 unlatching of valve, valve No. 36, valve 4 Numbers 7, No. 69 valve No. 58, valve closings, the steam that steam exhaust device is No. 12 are radiated into Air-Cooling Island 1;Now steam discharge fills No. 23 high back pressure heat supply runnings are put, closing valve makes for No. 25 Air-Cooling Island all stop transport for No. 2 13, no longer retains antifreeze steam flow, Valve No. 7 10, valve are all turned on for No. 8 11, and No. 23 turbine discharges of steam exhaust device are condensed into heat supply condenser 1, will Exhaust steam heat feeds to heat user.If steam exhaust device needs participation power network for No. 23, significantly peak regulation, heat supply condenser 1 can not be complete Turbine discharge is absorbed, now No. 36 standard-sized sheets of valve, utilize the entrance Air-Cooling Island No. 1 12 of regulation steam exhaust devices No. 23 of valve No. 47 Radiate steam flow, meets peaking demand of power grid on the premise of unit safety is ensured.If there is exception in heat supply network, into heat supply The heat supply network recirculated water of condenser 1 interrupts, then standard-sized sheet valve No. 36, valve No. 47, steam exhaust device fully enter Air-Cooling Island 1 for No. 23 12 are radiated, and reach the extremely non-stop-machine purpose of heat supply network.
If steam exhaust device is run for No. 23 in pure condensate, No. 25 unlatchings of valve, valve No. 36, valve No. 47, valve 7 10th, No. 8 11 closings of valve, the steam that steam exhaust device is No. 23 are radiated for No. 2 13 into Air-Cooling Island;Now steam exhaust device 12 is high Back pressure heat supply running, closing valve makes for No. 14 Air-Cooling Island No. 1 12 all stop transport, and no longer retains antifreeze steam flow, valve No. 58, Valve is all turned on for No. 69, and No. 11 turbine discharge of steam exhaust device is condensed into heat supply condenser, and exhaust steam heat is fed to Heat user.If steam exhaust device needs for No. 12 to participate in power network significantly peak regulation, heat supply condenser 1 can not fully absorb steam turbine row Vapour, now No. 47 standard-sized sheets of valve, utilize the radiating steam stream of the entrance Air-Cooling Island No. 2 13 of regulation steam exhaust devices No. 12 of valve No. 36 Amount, meets peaking demand of power grid on the premise of unit safety is ensured.If there is exception in heat supply network, into heat supply condenser 1 Heat supply network recirculated water interrupts, then standard-sized sheet valve No. 36, valve No. 47, the steam discharge that steam exhaust device is No. 12 fully enter Air-Cooling Island No. 2 13 Radiated, reach the extremely non-stop-machine purpose of heat supply network.
After this antifreezing measures Optimizing Reconstruction, on the one hand two unit steam discharges can pass through the sky of wherein one pure condensate operating unit Cool island is radiated, and high back pressure thermal power plant unit Air-Cooling Island no longer needs antifreeze steam, and this some vapor heat can pass through condensing Device feeds to heat user, increases Business Economic Benefit;On the other hand when power network needs significantly peak regulation, remain able to ensure unit Generating capacity, and unit can not shut down operation when major break down occurs in heat supply network.This system possesses the reserved two row air coolings of former design The repertoire on island, and security and economy are more prominent.

Claims (4)

1. a kind of Air-cooled Unit high back pressure circulating water heating winterization system, including heat supply condenser(1), it is characterised in that:It is described Heat supply condenser(1)Respectively with Air-Cooling Island 1(12), Air-Cooling Island 2(13)It is connected in parallel, heat supply condenser(1)With Air-Cooling Island 1 Number(12)The valve 5 of series connection is installed on the blow-off line 1 of connection(8)With valve 6(9), heat supply condenser(1)With sky Cool island 2(13)The valve 7 of series connection is installed on the blow-off line 2 of connection(10)With valve 8(11), blow-off line 1 No. 2 are connected by bypass duct number with blow-off line, and the valve 3 of series connection is provided with bypass duct(6)With valve 4(7).
2. Air-cooled Unit high back pressure circulating water heating winterization system according to claim 1, it is characterised in that:The air cooling Island 1(12)Connect steam exhaust device 1(2), and be provided with both connecting pipe close to Air-Cooling Island 1(12)Valve 1 Number(4), steam exhaust device 1(2)With Air-Cooling Island 1(12)It is connected in parallel blow-off line 1.
3. Air-cooled Unit high back pressure circulating water heating winterization system according to claim 1, it is characterised in that:The Air-Cooling Island No. 2(13)Connect steam exhaust device 2(3), and be provided with both connecting pipe close to Air-Cooling Island 2(13)Valve 2 (5), steam exhaust device 2(3)With Air-Cooling Island 2(13)It is connected in parallel blow-off line 2.
4. Air-cooled Unit high back pressure circulating water heating winterization system according to claim 1, it is characterised in that:The valve No. 3(6)With valve 4(7)It is electric control valve.
CN201720315138.XU 2017-03-29 2017-03-29 Air-cooled Unit high back pressure circulating water heating winterization system Active CN206626980U (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111120021A (en) * 2019-12-20 2020-05-08 东方电气集团东方汽轮机有限公司 Water charging system for condenser of heat supply unit
CN111520792A (en) * 2020-04-29 2020-08-11 北京国电蓝天节能科技开发有限公司 Dead steam waste heat recovery and heat supply system and method for direct air cooling unit

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111120021A (en) * 2019-12-20 2020-05-08 东方电气集团东方汽轮机有限公司 Water charging system for condenser of heat supply unit
CN111520792A (en) * 2020-04-29 2020-08-11 北京国电蓝天节能科技开发有限公司 Dead steam waste heat recovery and heat supply system and method for direct air cooling unit
CN111520792B (en) * 2020-04-29 2021-07-30 国电龙源节能技术有限公司 Exhaust steam waste heat recovery and heat supply method for direct air cooling unit

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