CN204535451U - The indirect cold storage spike cooling system of a kind of fired power generating unit dry type - Google Patents
The indirect cold storage spike cooling system of a kind of fired power generating unit dry type Download PDFInfo
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- CN204535451U CN204535451U CN201520218231.XU CN201520218231U CN204535451U CN 204535451 U CN204535451 U CN 204535451U CN 201520218231 U CN201520218231 U CN 201520218231U CN 204535451 U CN204535451 U CN 204535451U
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Abstract
The utility model discloses the indirect cold storage spike cooling system of a kind of fired power generating unit dry type, comprise turbine low pressure cylinder, its lower end connects the blow-off line matched, blow-off line connects injection type condenser by butterfly control valve, it connects condensate tank by condensate pump, the blow-off line other end connects air cooling tubes condenser, which is provided with air cooling tubes condenser steam distribution pipeline, which is provided with cooling and mixing device, cooling and mixing device comprises cooling water conveyance conduit and some cooling water nozzles disposed thereon, air cooling tubes condenser connects recirculated water header by condensate tank, recirculated water header connects the cooling chamber be located in cooling system by water pump, cooling chamber connects dry air force-draft cooling system and voltage respectively and to contract steam-refrigerated system, cooling chamber connects injection type condenser by circulating cooling water pump, air cooling tubes condenser connection is located at water-ring vacuum pump in air extractor, it connects moisture trap and cooler successively, cooler one end connects cooling chamber, the other end connects recirculated water header.
Description
Technical field
The utility model relates to thermodynamic cycle technical field, is specifically related to the indirect cold storage spike cooling system of a kind of fired power generating unit dry type.
Background technology
Along with the stable and rapid development of China's economy, entire society, to the expansion gradually of energy resource consumption demand, wherein grows with each passing day based on the demand of the manufacturing industry of light, heavy industry for electric energy especially.And the pressure of economic transition also make former southern manufacturing industry developed regions just progressively north new, old industrial area complete conveying, the extension of manufacturing industry chain.For ensureing industrial enterprise's successful transfer from south to north and providing enough energy supports, northern area greatly developed power industry from 2000, wherein especially to rely on the ground such as sweet peaceful, the Hebei in the Shanxi of the fossil energy such as coal storage advantages, the Inner Mongol, Xinjiang, Shan, large quantities of Coal-fired group has been built in investment, thus provides good supply of electric power basis for the clean transformation of economy and the extension of industry chain (supply chain).
Due to geography, the climatic characteristic of northern area, building and going into operation in the Coal-fired group of operation, Direct Air-Cooled Coal-fired group occupies a large amount of share, thus saves precious water resource in northern drought area.In actual motion, Direct Air-Cooled fired power generating unit there will be the problem of high, the back pressure frequent fluctuation of back pressure in summer, and vacuum can reach 40kPa, produces great negative effect to the stable operation of unit and economy.Current solution mainly sets up former Direct Air-Cooled column area and wet type spike cooler two kinds of modes, set up Direct Air-Cooled column area cost high and the problem of fluctuations of vacuum can not be solved, although wet type spike cooler cost is slightly low, but need to consume great lot of water resources to reach the object reducing back pressure in running, and a large amount of demineralized water of external spraying formula cooler consumption, this disagrees with the water saving original intention setting up Direct Air-cooled Unit.
Therefore, a kind of Novel fire group of motors dry type indirect cooler system of exploitation is needed badly, to solve prior art above shortcomings.
Utility model content
The purpose of this utility model is to provide the indirect cold storage spike cooling system of a kind of fired power generating unit dry type, to overcome currently available technology above shortcomings.
The purpose of this utility model is achieved through the following technical solutions:
The indirect cold storage spike cooling system of a kind of fired power generating unit dry type, comprise turbine low pressure cylinder, described turbine low pressure cylinder lower end is connected with the blow-off line matched with it, described blow-off line is connected with injection type condenser by butterfly control valve, described injection type condenser is connected with condensate tank by condensate pump, the other end of described blow-off line is connected with air cooling tubes condenser, described air cooling tubes condenser is provided with air cooling tubes condenser steam distribution pipeline, described air cooling tubes condenser steam distribution pipeline is provided with cooling and mixing device, described cooling and mixing device comprises cooling water conveyance conduit and is arranged on the some cooling water nozzles on cooling water conveyance conduit, described cooling water nozzle is arranged on inside turbine low pressure cylinder to the blow-off line and air cooling tubes condenser steam distribution pipeline of air cooling tubes condenser, described cooling water conveyance conduit is arranged on the blow-off line of turbine low pressure cylinder to air cooling tubes condenser and the outside of air cooling tubes condenser steam distribution pipeline, described air cooling tubes condenser is connected with recirculated water header by condensate tank, described recirculated water header is connected with the cooling chamber be arranged in cooling system by water pump, described cooling chamber is connected to dry air force-draft cooling system and voltage and contracts steam-refrigerated system, described cooling chamber is connected with injection type condenser by circulating cooling water pump, described air cooling tubes condenser is also connected with the water-ring vacuum pump be arranged in air extractor, described water-ring vacuum pump is connected with moisture trap and cooler in turn, described cooler one end is connected with cooling chamber by circulating cooling water pump, the other end is connected with recirculated water header.
Further, between described cooling and mixing device and circulating cooling water pump, be provided with control valve eight, control valve three, between described cooling and mixing device and injection type condenser, be provided with control valve eight and control valve seven.
Further, control valve four is provided with between described cooler and circulating cooling water pump.
Further, the low-temperature cooling water that the cooling water in described cooler produces from cooling system.
Further, between described condensate tank and recirculated water header, be provided with control valve one, be provided with block valve between described recirculated water header and water pump, between described water pump and cooling chamber, be provided with control valve two.
Further, between described condensate tank and condensate pump, be provided with control valve five, between described condensate pump and recirculated water header, be provided with control valve six.
Further, control valve three and control valve seven is provided with between described circulating cooling water pump and injection type condenser.
Further, described water pump, circulating cooling water pump and condensate pump are double speed pump.
The beneficial effects of the utility model are: reasonable in design, effective reduction air cooling tubes condenser back pressure, significantly raising unit running process vacuum, the cold-storage effect of device is relied on to maintain the better vacuum of unit and stablize air cooling tubes condenser back pressure, appreciably improve unit operation economy, ensure that unit completely can be sent out, surely send out, improve Steam Turbine property safe and reliable to operation, and reduce the turbine rotor fatigue loss of load frequent variations generation, the Extending Rotor life-span, under the prerequisite meeting unit safety operation, conscientiously accomplish energy-saving and emission-reduction.
Accompanying drawing explanation
Below in order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment below, apparently, accompanying drawing in the following describes is only some embodiments of the application, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the schematic diagram of the indirect cold storage spike cooling system of a kind of fired power generating unit dry type described in the utility model embodiment.
In figure:
1, turbine low pressure cylinder; 2, cooling and mixing device; 3, air cooling tubes condenser steam distribution pipeline; 4, air cooling tubes condenser; 5, water-ring vacuum pump; 6, moisture trap; 7, cooler; 8, condensate tank; 9, control valve one; 10, recirculated water header; 11, block valve; 12, control valve two; 13, water pump; 14, circulating cooling water pump; 15, cooling chamber; 16, voltage contracts steam-refrigerated system; 17, dry air force-draft cooling system; 18, blow-off line; 19, injection type condenser; 20, air extractor; 21, cooling system; 22, control valve three; 23, control valve four; 24, cooling water conveyance conduit; 25, cooling water nozzle; 26, butterfly control valve; 27, condensate pump; 28, control valve five; 29, control valve six; 30, control valve seven; 31, control valve eight.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the utility model embodiment, be clearly and completely described the technical scheme in the utility model embodiment, obviously, described embodiment is only the utility model part embodiment, instead of whole embodiments.Based on the embodiment in the utility model, the every other embodiment that those of ordinary skill in the art obtain, all belongs to the scope of the utility model protection.
As shown in Figure 1, the indirect cold storage spike cooling system of a kind of fired power generating unit dry type described in the utility model embodiment, comprise turbine low pressure cylinder 1, described turbine low pressure cylinder 1 lower end is connected with the blow-off line 18 matched with it, described blow-off line 18 is connected with injection type condenser 19 by butterfly control valve 26, described injection type condenser 19 is connected with condensate tank 8 by condensate pump 27, the other end of described blow-off line 18 is connected with air cooling tubes condenser 4, described air cooling tubes condenser 4 is provided with air cooling tubes condenser steam distribution pipeline 3, described air cooling tubes condenser steam distribution pipeline 3 is provided with cooling and mixing device 2, some cooling water nozzles 25 that described cooling and mixing device 2 comprises cooling water conveyance conduit 24 and is arranged on cooling water conveyance conduit 24, inside the blow-off line 18 that described cooling water nozzle 25 is arranged on turbine low pressure cylinder 1 to air cooling tubes condenser 4 and air cooling tubes condenser steam distribution pipeline 3, described cooling water conveyance conduit 24 is arranged on the blow-off line of turbine low pressure cylinder 1 to air cooling tubes condenser 4 and the outside of air cooling tubes condenser steam distribution pipeline 3, described air cooling tubes condenser 4 is connected with recirculated water header 10 by condensate tank 8, described recirculated water header 10 is connected with the cooling chamber 15 be arranged in cooling system 21 by water pump 13, described cooling chamber 15 is connected to dry air force-draft cooling system 17 and voltage and contracts steam-refrigerated system 16, described cooling chamber 15 is connected with injection type condenser 19 by circulating cooling water pump 14, described air cooling tubes condenser 4 is also connected with the water-ring vacuum pump 5 be arranged in air extractor 20, described water-ring vacuum pump 5 is connected with moisture trap 6 and cooler 7 in turn, described cooler 7 one end is connected with cooling chamber 15 by circulating cooling water pump 14, the other end is connected with recirculated water header 10, control valve 8 31 is provided with between described cooling and mixing device 2 and circulating cooling water pump 14, control valve 3 22, control valve 8 31 and control valve 7 30 is provided with between described cooling and mixing device 2 and injection type condenser 19, control valve 4 23 is provided with between described cooler 7 and circulating cooling water pump 14, cooling water in described cooler 7 to contract steam-refrigerated system 16 from dry air force-draft cooling system 17 and voltage, control valve 1 is provided with between described condensate tank 8 and recirculated water header 10, block valve 11 is provided with between described recirculated water header 10 and water pump 13, control valve 2 12 is provided with between described water pump 13 and cooling chamber 15, control valve 5 28 is provided with between described condensate tank 8 and condensate pump 27, control valve 6 29 is provided with between described condensate pump 27 and recirculated water header 10, control valve 3 22 and control valve 7 30 is provided with between described circulating cooling water pump 14 and injection type condenser 19, described water-ring vacuum pump 5, water pump 13, circulating cooling water pump 14 and condensate pump 27 are double speed pump.
During concrete use, steam is discharged by turbine low pressure cylinder 1, and account for capacity 10%-20%, the steam of discharge imports in injection type condenser 19 by butterfly control valve 26;
In injection type condenser 19, steam directly contacts with the cooling water being injected into moisture film, rapid condensation, the water of the condensing vapour amount derived from injection type condenser 19 is derived and is divided into two-way after condensate pump 27 condenses, one tunnel is for being directed into condensate tank 8 with the condensate water of the quality such as institute condensing vapour by control valve 5 28, and another road enters in recirculated water header 10 for all the other condensate water by control valve 6 29;
Circulation condensate water in recirculated water header 10 is by block valve 11, and flow through water pump 13, again by control valve 2 12, after completing the regulable control to discharge and flow velocity, enter in cooling system 21, enter cooling chamber 15 in cooling system 21, voltage contract steam-refrigerated system 16 and dry air force-draft cooling system 17 acting in conjunction under the carrying out entering cooling chamber 15 is cooled;
After cooling water is derived from cooling chamber 15, enter circulating cooling water pump 14, the circulation condensate water derived through circulating cooling water pump 14 is divided into two-way, control valve 4 23 of leading up to enters the cooler 7 in air extractor 20, former condensate water is replaced to cool water-ring vacuum pump 5 with low-temperature cooling water, improve the suction capactity of water-ring vacuum pump 5, the water of deriving from cooler 7 enters into recirculated water header 10, two-way made by rear point of control valve 3 22 of separately leading up to, control valve 8 31 of leading up to enters into cooling and mixing device 2, control valve 7 30 of separately leading up to enters in injection type condenser 19, steam contacts condensation again with the cooling water being injected into moisture film, then cool cycles process is next time started, the low-temperature cooling water formed after cooling system 21 cools is back and forth between system, form closed cycle, thus shunting steam discharge is carried out to turbine low pressure cylinder 1, be equivalent to increase film-cooled heat, improve unit vacuum.
Injection type condenser system, cooling and mixing device and cold storage cooling system that this device is newly-increased, turbine low pressure cylinder steam discharge can be made directly to contact and combination cooling water, rapid reduction working medium specific volume, promote the flowing of steam in air condenser system, especially air cooling tubes condenser end heat transfer effect is optimized, and utilize injection type condenser to shunt low pressure (LP) cylinder steam discharge, strengthen unit cooling capacity, rely on the advantage of direct hybridization heat exchange, obtain the effect of large film-cooled heat with less occupation of land, significantly improve unit vacuum; Very short to injection type condenser distance from steamer owner blow-off line shunting steam, vapor flow process is little along journey pressure drop, and reducing unit back pressuce has greater advantage; Inner eycle water cooling system enhances the ability of direct air cooling system environment resistant disturbance, reduce ambient wind sensitiveness, add there is very large thermal inertia and thermal capacitance in a large number recirculated cooling water as stable working medium, rely on its huge cold-storage effect, the stable state under vacuum can be maintained, reduce the frequent variable working condition action of blower fan, improve its safety in operation, ensure that air cooling tubes condenser normally runs, effectively raise stability and the reliability of plant running, extend the service life of device; When external environment is unstable, the recirculated water participating in circulating can cushion the back-pressure surges that direct air cooled condenser Heat exchanger causes, and while obtaining raising vacuum, can play the effect of stable vacuum; Enclosed cooling water circulation is used to reach the object improving unit vacuum, precious condensate water resource can be recycled, avoid causing great lot of water resources to waste, suit the original intention that northern fired power generating unit adopts Direct Air-Cooled, and there is the advantages such as investment little, high efficiency, characteristics of compact layout, occupation of land be little, directly mix with steam the object achieving and roll up heat exchange area by cooling water, can larger economic benefit be exchanged for small investment and improve the ability of vacuum, improve environmental protection and economy, be conducive to the propagation and employment in market.
The utility model is not limited to above-mentioned preferred forms; anyone can draw other various forms of products under enlightenment of the present utility model; no matter but any change is done in its shape or structure; every have identical with the application or akin technical scheme, all drops within protection domain of the present utility model.
Claims (8)
1. the indirect cold storage spike cooling system of fired power generating unit dry type, it is characterized in that, comprise turbine low pressure cylinder (1), described turbine low pressure cylinder (1) lower end is connected with the blow-off line (18) matched with it, described blow-off line (18) is connected with injection type condenser (19) by butterfly control valve (26), described injection type condenser (19) is connected with condensate tank (8) by condensate pump (27), the other end of described blow-off line (18) is connected with air cooling tubes condenser (4), described air cooling tubes condenser (4) is provided with air cooling tubes condenser steam distribution pipeline (3), described air cooling tubes condenser steam distribution pipeline (3) is provided with cooling and mixing device (2), described cooling and mixing device (2) comprises cooling water conveyance conduit (24) and is arranged on the some cooling water nozzles (25) on cooling water conveyance conduit (24), described cooling water nozzle (25) is arranged on inside turbine low pressure cylinder (1) to the blow-off line (18) and air cooling tubes condenser steam distribution pipeline (3) of air cooling tubes condenser (4), described cooling water conveyance conduit (24) is arranged on the blow-off line of turbine low pressure cylinder (1) to air cooling tubes condenser (4) and the outside of air cooling tubes condenser steam distribution pipeline (3), described air cooling tubes condenser (4) is connected with recirculated water header (10) by condensate tank (8), described recirculated water header (10) is connected with the cooling chamber (15) be arranged in cooling system (21) by water pump (13), described cooling chamber (15) is connected to dry air force-draft cooling system (17) and voltage and contracts steam-refrigerated system (16), described cooling chamber (15) is connected with injection type condenser (19) by circulating cooling water pump (14), described air cooling tubes condenser (4) is also connected with the water-ring vacuum pump (5) be arranged in air extractor (20), described water-ring vacuum pump (5) is connected with moisture trap (6) and cooler (7) in turn, described cooler (7) one end is connected with cooling chamber (15) by circulating cooling water pump (14), the other end is connected with recirculated water header (10).
2. the indirect cold storage spike cooling system of fired power generating unit dry type according to claim 1, it is characterized in that, be provided with control valve eight (31), control valve three (22) between described cooling and mixing device (2) and circulating cooling water pump (14), between described cooling and mixing device (2) and injection type condenser (19), be provided with control valve eight (31) and control valve seven (30).
3. the indirect cold storage spike cooling system of fired power generating unit dry type according to claim 2, is characterized in that, be provided with control valve four (23) between described cooler (7) and circulating cooling water pump (14).
4. the indirect cold storage spike cooling system of fired power generating unit dry type according to claim 3, is characterized in that, the low-temperature cooling water that the cooling water in described cooler (7) produces from cooling system (21).
5. the indirect cold storage spike cooling system of fired power generating unit dry type according to claim 4, it is characterized in that, control valve one (9) is provided with between described condensate tank (8) and recirculated water header (10), be provided with block valve (11) between described recirculated water header (10) and water pump (13), between described water pump (13) and cooling chamber (15), be provided with control valve two (12).
6. the indirect cold storage spike cooling system of fired power generating unit dry type according to claim 5, it is characterized in that, be provided with control valve five (28) between described condensate tank (8) and condensate pump (27), between described condensate pump (27) and recirculated water header (10), be provided with control valve six (29).
7. the indirect cold storage spike cooling system of fired power generating unit dry type according to claim 6, is characterized in that, is provided with control valve three (22) and control valve seven (30) between described circulating cooling water pump (14) and injection type condenser (19).
8. the indirect cold storage spike cooling system of fired power generating unit dry type according to claim 7, is characterized in that, described water pump (13), circulating cooling water pump (14) and condensate pump (27) are double speed pump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520218231.XU CN204535451U (en) | 2015-04-13 | 2015-04-13 | The indirect cold storage spike cooling system of a kind of fired power generating unit dry type |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520218231.XU CN204535451U (en) | 2015-04-13 | 2015-04-13 | The indirect cold storage spike cooling system of a kind of fired power generating unit dry type |
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| CN204535451U true CN204535451U (en) | 2015-08-05 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201520218231.XU Withdrawn - After Issue CN204535451U (en) | 2015-04-13 | 2015-04-13 | The indirect cold storage spike cooling system of a kind of fired power generating unit dry type |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104807344A (en) * | 2015-04-13 | 2015-07-29 | 北京北方三合能源技术有限公司 | Dry indirect-cooling-storage type peak cooling system of thermal power generating unit |
| CN106224020A (en) * | 2016-09-30 | 2016-12-14 | 北京北方三合能源技术有限公司 | A kind of fired power generating unit two-way accumulation of energy fall coal consumption system |
| CN106767119A (en) * | 2016-11-24 | 2017-05-31 | 中国能源建设集团广东省电力设计研究院有限公司 | Indirect air cooling system and its control method with residual neat recovering system |
-
2015
- 2015-04-13 CN CN201520218231.XU patent/CN204535451U/en not_active Withdrawn - After Issue
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104807344A (en) * | 2015-04-13 | 2015-07-29 | 北京北方三合能源技术有限公司 | Dry indirect-cooling-storage type peak cooling system of thermal power generating unit |
| CN104807344B (en) * | 2015-04-13 | 2017-04-19 | 北京北方三合能源技术有限公司 | Dry indirect-cooling-storage type peak cooling system of thermal power generating unit |
| CN106224020A (en) * | 2016-09-30 | 2016-12-14 | 北京北方三合能源技术有限公司 | A kind of fired power generating unit two-way accumulation of energy fall coal consumption system |
| CN106767119A (en) * | 2016-11-24 | 2017-05-31 | 中国能源建设集团广东省电力设计研究院有限公司 | Indirect air cooling system and its control method with residual neat recovering system |
| CN106767119B (en) * | 2016-11-24 | 2018-10-19 | 中国能源建设集团广东省电力设计研究院有限公司 | Indirect air cooling system with residual neat recovering system and its control method |
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| C14 | Grant of patent or utility model | ||
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| AV01 | Patent right actively abandoned |
Granted publication date: 20150805 Effective date of abandoning: 20170419 |
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| AV01 | Patent right actively abandoned |