CN202032910U - Indirect air cooling system configurated in thermal power plant in parallel - Google Patents
Indirect air cooling system configurated in thermal power plant in parallel Download PDFInfo
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- CN202032910U CN202032910U CN2011200900990U CN201120090099U CN202032910U CN 202032910 U CN202032910 U CN 202032910U CN 2011200900990 U CN2011200900990 U CN 2011200900990U CN 201120090099 U CN201120090099 U CN 201120090099U CN 202032910 U CN202032910 U CN 202032910U
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Abstract
The utility model discloses an indirect air cooling system configurated in a thermal power plant in parallel. A natural ventilation air cooling tower and a plurality of groups of mechanical ventilation air cooling towers are connected in parallel for cooling, wherein the natural ventilation air cooling tower and the plurality of groups of mechanical ventilation air cooling towers share a circulation water pump and are in parallel connection through the circulation water pump, so as to solve the problem of reasonable configuration of the air cooling system in the thermal power plant under complex meteorological conditions and running conditions. The indirect air cooling system configurated in the thermal power plant in parallel reduces effect of environmental wind speed, wind direction and temperature on the cooling system, has the characteristics that the anti-freezing measures are reliable, the running is flexible and the system is convenient to configurate as well as the investment is saved, and a viable and optimized technical approach for the air-cooling thermal power plant under complex meteorological conditions is provided.
Description
Technical field
The utility model relates to the new arrangement mode of steam power plant's Air-cooled Unit indirect air cooling system cooling device, adopt gravity-flow ventilation indirect dry cooling tower and mechanical draft indirect dry cooling tower cooling device in parallel, effectively solve the reasonable disposition problem of steam power plant's air cooling system under some IFR conditions and the service condition.
Background technology
The main cooling device of present domestic large-size thermal power plant indirect air cooling system adopts the main cooling device of gravity-flow ventilation air cooling tower, subsidiary engine cooling water or small power plant to adopt the mechanical draft air cooling tower usually, and these two kinds of cooling devices always are applied to the power plant indirect air cooling system singlely.
Steam power plant with 2 * 300MW level air cooling heat supply unit is an example, can adopt gravity-flow ventilation indirect dry cooling tower of a machine assembly or configuration mechanical draft indirect dry air cooling tower as cooling device.
To a gravity-flow ventilation indirect air cooling of machine Tower System, the steam turbine heat exhaust is less during the Winter heat supply, and is comparatively outstanding in the antifreeze problem of severe cold area air cooling system, can influence the safe operation of whole system.
To the mechanical draft indirect dry cooling Tower System, to summer strong wind resistivity is preferably arranged, whole year operation is more flexible, the preventing freeze in winter problem more easily solves, but the power consumption of blower fan is big, operating cost is higher.
Respectively there are pluses and minuses in above-mentioned 2 kinds of systems, but all can not solve the reasonable disposition problem of steam power plant's air cooling system under some IFR conditions and the service condition well, solve the problem that steam power plant's indirect air cooling system adapts to severe cold condition, adapts to summer high temperature strong wind, reduction fixed investment and operating cost so should seek novel collocation method.
The utility model content
The utility model steam power plant disposes indirect air cooling system side by side, is the selection issue of steam power plant's air cooling system cooling device of solving specified conditions, proposes the indirect air cooling system that gravity-flow ventilation indirect dry cooling tower and many group mechanical draft indirect dry cooling towers are connected in parallel.
The technical solution adopted in the utility model is: gravity-flow ventilation air cooling tower and many group mechanical draft air cooling towers are connected in parallel by water circulating pump and circulating water pipeline.Wherein, the modes of this gravity-flow ventilation air cooling tower and the cooling in parallel of many group mechanical draft air cooling towers adopt gravity-flow ventilation air cooling tower of a machine assembly and many group mechanical draft air cooling towers or adopt gravity-flow ventilation air cooling tower of two machine assembly and the parallel cooling modes of organizing the mechanical draft air cooling towers more.
The beneficial effects of the utility model are: the indirect air cooling system that gravity-flow ventilation air cooling tower and many group mechanical draft air cooling towers is connected in parallel and forms by the integrated method of technology, reduced the area of natural cooling tower, and the mechanical draft air cooling tower is made up of some lattice, and arrangement is flexible.Heating season, the reasonable coupling of the cooling capacity of gravity-flow ventilation indirect dry cooling tower and steam turbine heat exhaust can guarantee that the gravity-flow ventilation indirect dry cooling tower has sufficiently high load to freeze to prevent recirculated water during heat supply running.Gravity-flow ventilation indirect dry cooling tower whole year operation is to save station service to greatest extent, and the unit number that the force ventilation indirect dry cooling tower puts into operation can be according to factors such as heating season thermic load variation, hot season meteorological condition, unit load rate decisions, and a whole set of cooling system Load Regulation, the method for operation are very flexible.On economy, the initial cost of this scheme is economized most, and comprehensive annual total cost is minimum.
Description of drawings
The novel indirect air cooling system figure that Fig. 1 adopts gravity-flow ventilation indirect dry cooling tower and mechanical draft indirect dry cooling tower to be connected in parallel for northwest 2 * 300MW level air cooling heat supply unit power plant's schematic design phase.
The specific embodiment
Below in conjunction with drawings and Examples the utility model is further specified.
See also shown in Figure 1, the air cooling system figure that it adopts gravity-flow ventilation indirect dry cooling tower and mechanical draft indirect dry cooling tower to be connected in parallel for northwest 2 * 300MW level air cooling heat supply unit power plant's schematic design phase.Wherein, the device name of each representative of each figure number is: 1, boiler; 2, superheater; 3, steam turbine; 4, surface condenser; 5, condensate pump; 6, tramp iron separator; 7, condensate booster pump; 8, low-pressure heater; 9, oxygen-eliminating device; 10, feed pump; 11, high-pressure heater; 12, water circulating pump; 13, expansion tank; 14, full Aluminium Radiator; 15, gravity-flow ventilation indirect dry cooling tower; 16, force ventilation indirect dry cooling tower; 17, generator.Because each parts are prior art, in this not explanation one by one.As example, to gravity-flow ventilation indirect dry cooling tower of a machine, all the system schema that is connected in parallel of force ventilation indirect dry cooling tower and gravity-flow ventilation indirect dry cooling tower and mechanical draft indirect dry cooling tower carries out technical characteristic comparison and economic analysis (seeing Table 1～3).
Table 1: three kinds of indirect air cooling system design for scheme parameters relatively
Table 2: three kinds of indirect air cooling system scheme technical characteristics relatively
Table 3: three kinds of indirect air cooling system scheme economy relatively
Annotate: 1. calculating used rate of return on investment in the table is 10%, and the depreciation maintenance scale of charges is 2.5%;
2. the cost electricity price is counted according to 143 yuan/MW.h in the table; The standard coal price is by 204 yuan/t;
3. land price is according to 100,000 yuan of/mu meters in showing.
Comprehensively compared by last table, it is all lower than the initial cost and the operating cost of natural draft indirect dry cooling system and force ventilation indirect air cooling system to dispose indirect air cooling system side by side, so annual total cost is also minimum, so this scheme is better than other two schemes.
To the force ventilation indirect air cooling system, close heat exchange unit sparge pipe valve ratio and be easier to, also can take to accompany hot measure in case of necessity, the heat exchanging unit also can be added a cover at the top except that adopting the shutter sealing, reduces free convection to greatest extent, and antifreezing measures are reliable.
The part of the indirect air cooling system of configuration is the gravity-flow ventilation indirect dry cooling tower side by side, has the lower advantage of station service power consumption rate; Another part is the force ventilation indirect dry cooling tower, has to drop into to reach the advantage that antifreeze problem more easily solves flexibly, and be a kind of novel indirect air cooling system.
The design principle and the method for operation of the indirect air cooling system that adopts the utility model gravity-flow ventilation air cooling tower and mechanical draft air cooling tower to be connected in parallel to dispose are as follows:
According to different site conditions can select a machine one tower to add machine power tower, two machines, one tower adds multiple combination forms such as machine power tower, the cooling capacity of gravity-flow ventilation indirect dry cooling tower need with the steam turbine heat exhaust rationally coupling have sufficiently high load to freeze in the winter time to guarantee the gravity-flow ventilation indirect dry cooling tower to prevent recirculated water.Gravity-flow ventilation indirect dry cooling tower whole year operation is to save station service to greatest extent, and the unit number that the force ventilation indirect dry cooling tower puts into operation can change or factor decisions such as hot season meteorological condition, unit load rate according to the heating season thermic load, tackle heat load adjustment in winter, summer high temperature phase or strong wind phase flexibly, or the adjusting of heavy-duty service operating mode.
In sum, the indirect air cooling system that the utility model provides gravity-flow ventilation air cooling tower and mechanical draft air cooling tower to be connected in parallel configuration, system is reasonable in design, the safe operation of unit can be guaranteed, so offer the application of utility model patent in accordance with the law under the situation of reducing investment outlay, save the area, reduce operating cost; Technology contents of the present utility model and technical characterstic the sixth of the twelve Earthly Branches disclose as above, yet the personage who is familiar with this technology still may do various replacement and the modifications that do not deviate from this case invention spirit based on announcement of the present utility model.Therefore, structure all and of the present utility model, device, feature etc. are approximate, identical, all should belong to of the present utility model founding within purpose and the claim.
Claims (2)
1. steam power plant disposes indirect air cooling system side by side, it is characterized in that: for indirect air cooling system, adopt gravity-flow ventilation air cooling tower and the cooling in parallel of many group mechanical draft air cooling towers, wherein, the gravity-flow ventilation air cooling tower is connected with parallel way with many group mechanical draft air cooling tower common recycle water pumps and by circulating water pipeline.
2. steam power plant as claimed in claim 1 disposes indirect air cooling system side by side, it is characterized in that: the modes of gravity-flow ventilation air cooling tower and the cooling in parallel of many group mechanical draft air cooling towers, adopts gravity-flow ventilation air cooling tower of a machine assembly and many group mechanical draft air cooling towers or adopts gravity-flow ventilation air cooling tower of two machine assembly and the parallel cooling modes of organizing the mechanical draft air cooling towers more.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200900990U CN202032910U (en) | 2011-03-30 | 2011-03-30 | Indirect air cooling system configurated in thermal power plant in parallel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200900990U CN202032910U (en) | 2011-03-30 | 2011-03-30 | Indirect air cooling system configurated in thermal power plant in parallel |
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| Publication Number | Publication Date |
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| CN202032910U true CN202032910U (en) | 2011-11-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2011200900990U Expired - Lifetime CN202032910U (en) | 2011-03-30 | 2011-03-30 | Indirect air cooling system configurated in thermal power plant in parallel |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102183156A (en) * | 2011-03-30 | 2011-09-14 | 中国电力工程顾问集团华北电力设计院工程有限公司 | Parallel arranged indirect air-cooling systems of thermal power plant |
| CN103292611A (en) * | 2013-05-17 | 2013-09-11 | 东南大学 | Water-saving device used for wet-type air cooler in air-cooled power plant |
| CN104456793A (en) * | 2014-11-26 | 2015-03-25 | 西安工程大学 | Thermal energy/wind energy-driven evaporative cooling and cooling tower integrated cooling system for power plant |
| CN113028854A (en) * | 2021-03-05 | 2021-06-25 | 西安热工研究院有限公司 | System and method for preventing freezing in winter and reducing back pressure in summer for coal-fired wet cooling unit |
-
2011
- 2011-03-30 CN CN2011200900990U patent/CN202032910U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102183156A (en) * | 2011-03-30 | 2011-09-14 | 中国电力工程顾问集团华北电力设计院工程有限公司 | Parallel arranged indirect air-cooling systems of thermal power plant |
| CN103292611A (en) * | 2013-05-17 | 2013-09-11 | 东南大学 | Water-saving device used for wet-type air cooler in air-cooled power plant |
| CN104456793A (en) * | 2014-11-26 | 2015-03-25 | 西安工程大学 | Thermal energy/wind energy-driven evaporative cooling and cooling tower integrated cooling system for power plant |
| CN104456793B (en) * | 2014-11-26 | 2017-04-19 | 西安工程大学 | Thermal energy/wind energy-driven evaporative cooling and cooling tower integrated cooling system for power plant |
| CN113028854A (en) * | 2021-03-05 | 2021-06-25 | 西安热工研究院有限公司 | System and method for preventing freezing in winter and reducing back pressure in summer for coal-fired wet cooling unit |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: CHINA POWER ENGINEERING CONSULTING GROUP NORTH CHI Free format text: FORMER NAME: NORTH CHINA ELECTRIC POWER DESIGN INSTITUTE OF CHINA POWER ENGINEERING CONSULTING GROUP CORPORATION |
|
| CP01 | Change in the name or title of a patent holder |
Address after: 100120 Beijing city Xicheng District Street No. 24 Patentee after: NORTH CHINA POWER ENGINEERING CO., LTD. OF CHINA POWER ENGINEERING CONSULTING GROUP Address before: 100120 Beijing city Xicheng District Street No. 24 Patentee before: North China Electric Power Design Institute of China Power Engineering Consulting Group Corporation |
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| CX01 | Expiry of patent term |
Granted publication date: 20111109 |
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| CX01 | Expiry of patent term |