CN105464725A - Direct-air-cooling power generation system with natural ventilation cooling tower - Google Patents
Direct-air-cooling power generation system with natural ventilation cooling tower Download PDFInfo
- Publication number
- CN105464725A CN105464725A CN201511028489.4A CN201511028489A CN105464725A CN 105464725 A CN105464725 A CN 105464725A CN 201511028489 A CN201511028489 A CN 201511028489A CN 105464725 A CN105464725 A CN 105464725A
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- China
- Prior art keywords
- cooling tower
- air
- pipe bundle
- heat exchanger
- natural draft
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- 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
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
- F01K11/00—Plants characterised by the engines being structurally combined with boilers or condensers
- F01K11/02—Plants characterised by the engines being structurally combined with boilers or condensers the engines being turbines
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- 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
- F01D25/00—Component parts, details, or accessories, not provided for in, or of interest apart from, other groups
- F01D25/08—Cooling; Heating; Heat-insulation
- F01D25/12—Cooling
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28B—STEAM OR VAPOUR CONDENSERS
- F28B1/00—Condensers in which the steam or vapour is separate from the cooling medium by walls, e.g. surface condenser
- F28B1/06—Condensers in which the steam or vapour is separate from the cooling medium by walls, e.g. surface condenser using air or other gas as the cooling medium
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28C—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA COME INTO DIRECT CONTACT WITHOUT CHEMICAL INTERACTION
- F28C1/00—Direct-contact trickle coolers, e.g. cooling towers
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
The invention discloses a direct-air-cooling power generation system with a natural ventilation cooling tower. The direct-air-cooling power generation system comprises a boiler, an air-cooling condenser and the natural ventilation cooling tower. A plurality of air inlets are evenly formed in the bottom of the natural ventilation cooling tower in the circumferential direction. An air outlet is formed in the top of the natural ventilation cooling tower. The air-cooling condenser comprises a heat exchange pipe bundle which is composed of multiple heat exchange pipes. The heat exchange pipe bundle is arranged on the inner sides or the outer sides of the air inlets. Threads or grooves are formed in the inner surfaces of the heat exchange pipes. Fins are arranged on the outer sides of the heat exchange pipes. Multiple sets of shutters are arranged on the portion, on the peripheries of the air inlets, of the natural ventilation cooling tower. Each set of shutters include a plurality of blades which are horizontally arranged. By means of the direct-air-cooling power generation system, the power consumption of the direct-air-cooling power generation system can be lowered, the influences of natural air on running of the air-cooling system and a power generation set are reduced as much as possible, and the direct-air-cooling power generation system has important significance in improving operating economy, stability and reliability of a power plant.
Description
Technical field
The present invention is specifically related to a kind of direct air cooling power generation system adopting natural draft cooling tower.
Background technique
Generally speaking, the construction in thermal power plant must possess fuel and the large condition of water two.In the northwest of China, North China's rich coal resources, but water resources is poor, and water source becomes " bottleneck " problem of thermal power plant, this area development.The cooling medium of Air cooling technique is air, and with the Air-cooled Unit of capacity compared with wet type cooling unit, its sharpest edges significantly to be economized on water, so Air cooling technique power generation system has very large advantage in water-deficient area.
Air cooling generating is divided into again direct air cooling to generate electricity and indirect air cooling generating.It is simple that direct air cooling system has system, the advantages such as good effect of heat exchange, but general direct air cooling system adopts the cooling of blower fan forced ventilation, not only fan noise is large, blower fan consumes station service, and the layout of mechanical draft direct air cooling system restricts by predominant wind direction in summer, and to strong wind and hot air reflux more responsive, affect stable, the safe operation of steam turbine generator.
And, the blinds of the outer venetian blind of current natural draft cooling tower is all vertically arranged, when closing certain a slice venetian blind, the airspace of a part of heat exchanging tube is fully closed, cause this part heat-exchanging component just needs to be isolated and out of service, affect the working efficiency of heat-exchanging component.
Summary of the invention
For solving the problems of the technologies described above, the invention provides a kind of direct air cooling power generation system adopting natural draft cooling tower, it reduces the power consumption of direct air cooling power generation system by arranging natural draft cooling tower, reduce the impact that natural wind runs air cooling system and generator set as far as possible, significant to raising power plant performance driving economy, stability and reliability; Meanwhile, can also the coefficient of heat transfer be increased and reduce heat exchange area; In addition, the present invention can also free adjusting air output and do not affect the work of heat exchanger pipe bundle.
The technical solution used in the present invention is:
A kind of direct air cooling power generation system adopting natural draft cooling tower, this system comprises boiler, Turbo-generator Set, air cooling condenser, condensate water tank, condensate pump, low-pressure heater, oxygen-eliminating device, feed water pump, high-pressure heater and relevant connection pipeline, this system also comprises natural draft cooling tower, the bottom of described natural draft cooling tower circumferentially evenly offers multiple intake grill, and the top of described natural draft cooling tower is provided with exhaust outlet; The import of described air cooling condenser is connected with Turbo-generator Set by blow-off line, the outlet of described air cooling condenser is connected with condensate water tank, described air cooling condenser comprises the heat exchanger pipe bundle be made up of multiple heat exchanging tube, described heat exchanger pipe bundle is arranged on inner side or the outside of described intake grill, the internal surface of described heat exchanging tube offers screw thread or groove, and the arranged outside of described heat exchanging tube has fin; The periphery that described natural draft cooling tower is positioned at intake grill is provided with organizes venetian blind more, and described venetian blind of often organizing comprises multiple horizontally disposed blinds.
By technique scheme, the ratio of height to diameter of described natural draft cooling tower is 1.5 ~ 3.
By technique scheme, when heat exchanger pipe bundle is arranged on the inner side of described intake grill, the bus annular that described heat exchanger pipe bundle is parallel to natural draft cooling tower is arranged.
By technique scheme, when heat exchanger pipe bundle is arranged on the inner side of described intake grill, the radial level that described heat exchanger pipe bundle is parallel to natural draft cooling tower is arranged.
By technique scheme, when heat exchanger pipe bundle is arranged on the inner side of described intake grill, the radial direction that described heat exchanger pipe bundle favours natural draft cooling tower is arranged.
By technique scheme, when heat exchanger pipe bundle is arranged on the outside of described intake grill, the bus annular that described heat exchanger pipe bundle is parallel to natural draft cooling tower is arranged.
By technique scheme, the internal surface of described heat exchanging tube offers groove vertically.
By technique scheme, described feed water pump is electrically driven feedpump.
The present invention has following beneficial effect: this system adopts natural draft cooling tower, directly turbine discharge is cooled by the natural wind in tower, owing to not needing to arrange cooling fan, decrease fan power consumption, and then reduce auxiliary power consumption, improve the Economy of generator set, decrease simultaneously and run by fan the noise produced; Meanwhile, adopt natural draft cooling tower, direct air cooling system can also be reduced and arrange the restriction being subject to predominant wind direction in summer, decrease the impact that strong wind, hot air reflux etc. run Turbo-generator Set, improve stability and the reliability of power plant's operation; In addition, the heat exchanging tube internal surface in air cooling condenser offers screw thread or groove, can alleviate the film type condensation of steam, increase the coefficient of heat transfer and reduce heat exchange area, also can reduce cooling tower floor space further, heat exchange pipe external surface arranges fin, can heat exchange surface be expanded, increase the coefficient of heat transfer; And, venetian blind vertical layout anomaly, but by blinds horizontal arrangement, when closed portion blinds, whole airspaces of arbitrary heat-exchanging component can not being covered, by closing several groups of horizontal blinds being arranged in different heights, gradually reducing the cooling air quantity flowing through heat exchanger pipe bundle surface, unit can be made to prevent vapour condenser from freezing at low-load or severe cold weather, regulate more flexible.
Accompanying drawing explanation
Fig. 1 is the structural representation of the embodiment of the present invention;
Fig. 2 is the structural representation of heat exchanging tube in the embodiment of the present invention;
Fig. 3 is the structural representation of venetian blind in the embodiment of the present invention.
In figure: 1-boiler; 2-Turbo-generator Set; 3-natural draft cooling tower; 4-air cooling condenser; 401-heat exchanging tube, 402-groove, 5-condensate water tank; 6-condensate pump; 7-low-pressure heater; 8-oxygen-eliminating device; 9-feed water pump; 10-high-pressure heater; 11-blow-off line, 12-blinds.
Embodiment
In order to make object of the present invention, technological scheme and advantage clearly understand, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
In the preferred embodiment, as shown in Figure 1-Figure 3, a kind of direct air cooling power generation system adopting natural draft cooling tower, this system comprises boiler 1, Turbo-generator Set 2, air cooling condenser 4, condensate water tank 5, condensate pump 6, low-pressure heater 7, oxygen-eliminating device 8, feed water pump 9, high-pressure heater 10 and relevant connection pipeline, this system also comprises natural draft cooling tower 3, the bottom of natural draft cooling tower 3 circumferentially evenly offers multiple intake grill, and the top of natural draft cooling tower 3 is provided with exhaust outlet; The import of air cooling condenser 4 is connected with Turbo-generator Set 2 by blow-off line 11, the outlet of air cooling condenser 4 is connected with condensate water tank 5, air cooling condenser 4 comprises the heat exchanger pipe bundle be made up of multiple heat exchanging tube 401, heat exchanger pipe bundle is arranged on inner side or the outside of described intake grill, the internal surface of heat exchanging tube 401 offers screw thread or groove 402, and the arranged outside of heat exchanging tube 401 has fin; The periphery that natural draft cooling tower is positioned at intake grill is provided with organizes venetian blind more, often organizes venetian blind and comprises multiple horizontally disposed blinds 12.
Natural draft cooling tower can be in tower, produce the various profile of natural ventilation from bottom to top and the aeration tower in cross section with himself structure, in a preferred embodiment of the invention, natural draft cooling tower is designed to tall and thin type, ratio of height to diameter is 1.5 ~ 3, can reduce the impact that strong wind, hot air reflux etc. run Turbo-generator Set further.
In a preferred embodiment of the invention, when heat exchanger pipe bundle is arranged on the inner side of described intake grill, the heat exchanger pipe bundle of air cooling condenser is parallel to the bus annular setting of natural draft cooling tower, the radial level that also can be parallel to natural draft cooling tower is arranged, the radial direction that can also favour natural draft cooling tower is arranged, or the combination of above three kinds of modes; When heat exchanger pipe bundle is arranged on the outside of described intake grill, the bus annular that described heat exchanger pipe bundle is parallel to natural draft cooling tower is arranged.
In a preferred embodiment of the invention, as shown in Figure 2, the internal surface of heat exchanging tube 401 offers groove 402 vertically.
In a preferred embodiment of the invention, feed water pump is electrically driven feedpump, to simplify the system layout of feed water pump.
The present invention is when embody rule, natural draft cooling tower is in tower, produce the various profile of natural ventilation and the aeration tower in cross section with himself structure, air cooling condenser is the vapour condenser taking away steam heat with natural wind in the flowing of heat exchange tube of condenser outer surface, boiler is the boiler producing steam with the heat heated feed water of solid, gas, liquid fuel, or utilizes waste-heat to the boiler of water generates steam.
Workflow of the present invention is: the steam provided by boiler delivers to Turbo-generator Set generating, the steam discharge of Turbo-generator Set causes in air cooling condenser by blow-off line, the natural wind flow to bottom natural draft cooling tower, flow through the outer surface of air cooling condenser, take away the heat of steam and make vapor (steam) temperature reduce condensation, hot air after heat exchange is discharged from top outlet inlet, through the vapor collection of condensation in condensate water tank, boosted by condensate pump, water of condensation flows through low-pressure heater at different levels successively and is heated by steam, finally flow in oxygen-eliminating device and complete deoxygenation, the feedwater of flowing out from oxygen-eliminating device is boosted through feed water pump, flow through high-pressure heater at different levels successively, finally feed boiler, the qualified steam of quality is become after continuing heating, for steam turbine power generation.
Should be understood that, for those of ordinary skills, can be improved according to the above description or convert, and all these improve and convert the protection domain that all should belong to claims of the present invention.
Claims (8)
1. one kind adopts the direct air cooling power generation system of natural draft cooling tower, this system comprises boiler, Turbo-generator Set, air cooling condenser, condensate water tank, condensate pump, low-pressure heater, oxygen-eliminating device, feed water pump, high-pressure heater and relevant connection pipeline, it is characterized in that, this system also comprises natural draft cooling tower, the bottom of described natural draft cooling tower circumferentially evenly offers multiple intake grill, and the top of described natural draft cooling tower is provided with exhaust outlet; The import of described air cooling condenser is connected with Turbo-generator Set by blow-off line, the outlet of described air cooling condenser is connected with condensate water tank, described air cooling condenser comprises the heat exchanger pipe bundle be made up of multiple heat exchanging tube, described heat exchanger pipe bundle is arranged on inner side or the outside of described intake grill, the internal surface of described heat exchanging tube offers screw thread or groove, and the arranged outside of described heat exchanging tube has fin; The periphery that described natural draft cooling tower is positioned at intake grill is provided with organizes venetian blind more, and described venetian blind of often organizing comprises multiple horizontally disposed blinds.
2. system according to claim 1, is characterized in that, the ratio of height to diameter of described natural draft cooling tower is 1.5 ~ 3.
3. system according to claim 1, is characterized in that, when heat exchanger pipe bundle is arranged on the inner side of described intake grill, the bus annular that described heat exchanger pipe bundle is parallel to natural draft cooling tower is arranged.
4. system according to claim 1, is characterized in that, when heat exchanger pipe bundle is arranged on the inner side of described intake grill, the radial level that described heat exchanger pipe bundle is parallel to natural draft cooling tower is arranged.
5. system according to claim 1, is characterized in that, when heat exchanger pipe bundle is arranged on the inner side of described intake grill, the radial direction that described heat exchanger pipe bundle favours natural draft cooling tower is arranged.
6. system according to claim 1, is characterized in that, when heat exchanger pipe bundle is arranged on the outside of described intake grill, the bus annular that described heat exchanger pipe bundle is parallel to natural draft cooling tower is arranged.
7. system according to claim 1, is characterized in that, the internal surface of described heat exchanging tube offers groove vertically.
8. system according to claim 1, is characterized in that, described feed water pump is electrically driven feedpump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201511028489.4A CN105464725A (en) | 2015-12-31 | 2015-12-31 | Direct-air-cooling power generation system with natural ventilation cooling tower |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201511028489.4A CN105464725A (en) | 2015-12-31 | 2015-12-31 | Direct-air-cooling power generation system with natural ventilation cooling tower |
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| Publication Number | Publication Date |
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| CN105464725A true CN105464725A (en) | 2016-04-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201511028489.4A Pending CN105464725A (en) | 2015-12-31 | 2015-12-31 | Direct-air-cooling power generation system with natural ventilation cooling tower |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106006800A (en) * | 2016-05-25 | 2016-10-12 | 河北省电力勘测设计研究院 | High-salt wastewater evaporation concentration method and device |
| CN106014647A (en) * | 2016-07-05 | 2016-10-12 | 中科合肥微小型燃气轮机研究院有限责任公司 | Novel dynamometer circulating cooling water system |
| CN107905865A (en) * | 2017-03-20 | 2018-04-13 | 吴联凯 | A kind of electricity generation system for recycling industrial waste heat |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106006800A (en) * | 2016-05-25 | 2016-10-12 | 河北省电力勘测设计研究院 | High-salt wastewater evaporation concentration method and device |
| CN106006800B (en) * | 2016-05-25 | 2019-05-24 | 中国电建集团河北省电力勘测设计研究院有限公司 | A kind of high-salt wastewater evaporating concentrating method and device |
| CN106014647A (en) * | 2016-07-05 | 2016-10-12 | 中科合肥微小型燃气轮机研究院有限责任公司 | Novel dynamometer circulating cooling water system |
| CN106014647B (en) * | 2016-07-05 | 2017-11-03 | 中科合肥微小型燃气轮机研究院有限责任公司 | A kind of dynamometer recirculating cooling water system |
| CN107905865A (en) * | 2017-03-20 | 2018-04-13 | 吴联凯 | A kind of electricity generation system for recycling industrial waste heat |
| CN107905865B (en) * | 2017-03-20 | 2020-05-08 | 吴联凯 | Power generation system capable of recycling industrial waste heat |
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Application publication date: 20160406 |