CN201926327U - Device for improving energy efficiency of mechanical ventilation direct air-cooling condenser - Google Patents
Device for improving energy efficiency of mechanical ventilation direct air-cooling condenser Download PDFInfo
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- CN201926327U CN201926327U CN2010205648304U CN201020564830U CN201926327U CN 201926327 U CN201926327 U CN 201926327U CN 2010205648304 U CN2010205648304 U CN 2010205648304U CN 201020564830 U CN201020564830 U CN 201020564830U CN 201926327 U CN201926327 U CN 201926327U
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- windproof net
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- 238000001816 cooling Methods 0.000 title claims abstract description 60
- 238000005399 mechanical ventilation Methods 0.000 title abstract 3
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 16
- 239000010959 steel Substances 0.000 claims abstract description 16
- 238000009423 ventilation Methods 0.000 claims description 11
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims description 4
- 230000000295 complement effect Effects 0.000 claims description 4
- 239000002184 metal Substances 0.000 claims description 4
- 229910052751 metal Inorganic materials 0.000 claims description 4
- 229910001220 stainless steel Inorganic materials 0.000 claims description 4
- 229910052725 zinc Inorganic materials 0.000 claims description 4
- 239000011701 zinc Substances 0.000 claims description 4
- 238000010977 unit operation Methods 0.000 abstract description 5
- 230000002349 favourable effect Effects 0.000 abstract description 2
- 230000003014 reinforcing effect Effects 0.000 abstract 1
- 239000003570 air Substances 0.000 description 55
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 7
- 239000003245 coal Substances 0.000 description 5
- 238000010992 reflux Methods 0.000 description 4
- 208000011580 syndromic disease Diseases 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000012080 ambient air Substances 0.000 description 1
- 230000001174 ascending effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000000994 depressogenic effect Effects 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000009191 jumping Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
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Abstract
The utility model discloses a device for improving energy efficiencies of mechanical ventilation direct air-cooling condensers, which comprises an air-cooling platform and windproof nets formed by extending under the periphery of the air-cooling platform. The windproof nets are fixed on steel trusses of the air-cooling platform with bolts, and the tops of the windproof nets and the air-cooling platform are in an identical plane. The windproof nets are respectively arranged on the periphery of the air-cooling platform and fixed with frames and reinforcing ribs. The sizes of the windproof nets are matched with the support arrangements of the air-cooling steel trusses so as to be favorable for rooting on the steel trusses. The device for improving energy efficiencies of mechanical ventilation direct air-cooling condensers has the advantages of 1, improving the safety of unit operation, and 2, improving the economical efficiency of the unit operation.
Description
Technical field:
The utility model device relates to the force ventilation direct air cooled condenser improves efficiency under the condition of strong wind device.
Background technology:
At present, along with the scarcity of water resource and the strictness day by day of environmental protection, one of the main economic and technical indices that has become the operation of examination power plant with drainage index in thermal power plant.The water yield of the wet type cooling system saving 70～80% of the comparable band cooling tower of direct air cooling system is adopted in the main frame cooling, is the most effective water saving measures.Therefore the northern area of China new power plant construction cooling system has generally adopted air cooling system.The force ventilation direct air cooling system is to be arranged in outer air cooling tubes condenser (the AIRCOOLED CONDENSER of main building, abbreviation ACC) replacement is arranged in the conventional water cooling condenser of steam turbine below, adopt outside air that the steam discharge of steam turbine is cooled off and be condensed into condensate water, directly carry out heat exchange by cooler between air and steam, the ACC system of all operations at present supplies with the air that the steam discharge that condenses is used in the force ventilation mode.The technological process of ACC system is that turbine discharge is delivered in the outdoor air cooling tubes condenser by thick blow-off line, and the axial flow cooling blower makes ambient air stream subcooler outer surface, and steam discharge is condensed into water, and condensate water is carried back boiler through condensate pump again.
The air cooling tubes condenser in thermal power plant and blower fan generally are arranged on the exclusive scaoffold of steam turbine building A, and according to generating set capacity, platform is high 20～50 meters, and tens cooling sections neatly, in rows and columns arrange regularly.Establish windbreak and overcome hot blast recirculation around air cooling platform, Height of Wind Break Wall generally flushes with steam distributing pipe.
Direct air cooling system is subjected to different wind directions and different wind speed to influence comparison sensitivity, particularly wind speed to surpass～when 3.0m/s is above, the air cooling system radiating effect just there is certain influence.When wind speed raises again, even be provided with windbreak, different wind directions can form hot reflux to air cooling system, be that the hot gas ascending air is depressed into below the platform by strong wind, such hot blast is sucked by blower fan again, formation hot blast recirculation, even to pour in down a chimney appear in the windward side, can reduce fan efficiency and reduce radiating efficiency.When ambient wind velocity is very big, can appreciable impact air cooler inlet air temperature and flow velocity.Ambient wind velocity is big more, and the air cooler inlet air temperature is just high more, and face velocity is just more little, condensate temperature and pressure are just high more in the condenser, the back pressure that is steam turbine increases, and back pressure increases reducing of must causing that steam turbine exerts oneself or coal consumption increases, and improves operating cost.More seriously strong wind causes that back pressure sharply rises moment, can cause that unit jumps machine, influences the safety of electrical network.
Therefore, be necessary to study a kind of device that reduces the hot air reflux of air cooling platform, under the strong wind situation, can make air cooling tubes condenser keep the higher radiating efficiency of each wind direction,, improve security to guarantee the steam turbine economical operation.
The utility model content:
The purpose of this utility model is to provide a kind of hot air reflux that reduces air cooling platform, improves the device (hereinafter to be referred as windproof net) of air cooling tubes condenser heat dispersion.
The purpose of this utility model is to overcome the shortcoming of above-mentioned prior art, a kind of device that improves force ventilation direct air cooled condenser efficiency is provided, comprise air cooling platform and the downward windproof net that is provided with around air cooling platform, windproof net adopts and is bolted on the air cooling platform steel truss, and the top is concordant with air cooling platform.
Described windproof net is separately positioned on around the air cooling platform.Described windproof net has frame and ribs to fix.The support arrangement of described windproof net size and air cooling steel truss is complementary, and is convenient to take root on steel truss.
Described windproof net is a multiple layer metal silk screen, and wire can adopt zinc-coated wire or stainless steel wire.Also can adopt bolt or colligation splicing fixing between the windproof net of described each piece.
Downward certain altitude is provided with the windproof net of certain damped coefficient around the air cooling platform, and concrete numerical value should be selected in conjunction with the frequency that engineering arrangement condition and ambient wind velocity, wind direction, wind-warm syndrome take place.
Select suitable windproof net, recirculation zone is reduced, compressor flow increases, and the diffusional resistance of thermal current reduces, thereby increases the heat-sinking capability of air cooling tubes condenser, the economy and the security that improve unit.
The utility model has the advantages that:
(1) improves the unit operation security.Being provided with of windproof net can be resisted big wind-induced hot air reflux of moment effectively, slowed down the rising of unit back pressure, reduced the probability of unit jumping machine.
(2) improve the unit operation economy.The setting of windproof net can make the recirculation zone minimizing, and compressor flow increases, and the diffusional resistance of thermal current reduces, thereby increases the heat-sinking capability of air cooling tubes condenser, reduces the unit operation back pressure, thereby the increase steam turbine is exerted oneself or reduced coal consumption, the economy of raising unit.For example the every reduction of back pressure 1kPa can reduce coal consumption～1g/Kw.h, for a 600MW unit, per hour can save 0.6 ton in coal, and by 1 year operation 5500h, 300 yuan of calculating of coal per ton can be saved 990,000 yuan of operating costs.
Description of drawings:
Fig. 1 is an apparatus structure schematic diagram of the present utility model;
Fig. 2 is a windproof net scheme of installation of the present utility model;
Fig. 3 is a windproof web frame schematic diagram of the present utility model;
Fig. 4 be among Fig. 3 windproof net B-B to view.
Wherein: 1 is steam distributing pipe; 2 is windbreak; 3 is air cooling platform; 4 is air cooling tubes condenser; 5 is windproof net; 6 is the air cooling steel truss; 7 is blower fan; 8 is air duct; 9 is protection network.
The specific embodiment:
Below in conjunction with accompanying drawing the utility model is done and to be described in further detail:
Referring to Fig. 1-4, a kind of device that improves force ventilation direct air cooled condenser efficiency, comprise air cooling platform and around the air cooling platform the downward windproof net that is provided with, windproof net adopts and is bolted on the air cooling platform steel truss, the top is concordant with air cooling platform.
Described windproof net is separately positioned on around the air cooling platform.Described windproof net has frame and ribs to fix.The support arrangement of described windproof net size and air cooling steel truss is complementary, and is convenient to take root on steel truss.
Described windproof net is a multiple layer metal silk screen, and wire can adopt zinc-coated wire or stainless steel wire.Also can adopt bolt or colligation splicing fixing between the windproof net of described each piece.
Downward certain altitude is provided with the windproof net of certain damped coefficient around the air cooling platform, and concrete numerical value should be selected in conjunction with the frequency that engineering arrangement condition and ambient wind velocity, wind direction, wind-warm syndrome take place.
Select suitable windproof net, recirculation zone is reduced, compressor flow increases, and the diffusional resistance of thermal current reduces, thereby increases the heat-sinking capability of air cooling tubes condenser, the economy and the security that improve unit.
According to the research of certain engineering 2, when no windproof net, the efficient of two unit air cooling tubes condenser systems sees Table 2:
Each unit ACC efficient under different wind directions during the no windproof net of table 2
After being provided with windproof net, the efficiency change of the air cooling tubes condenser system of two unit least favorable wind directions sees Table 3:
Each unit ACC efficiency change rate under unfavorable wind direction when table 3 has windproof net
As seen after adding windproof net under the equal conditions, ACC efficient can improve greatly and improve.
Windproof net is a multiple layer metal silk screen, and wire diameter and pore-size should meet the requirement of damped coefficient, and windproof net damped coefficient and height are determined in conjunction with the frequency synthesis that engineering arrangement condition and ambient wind velocity, wind direction, wind-warm syndrome take place.For prevent that windproof net from excessive distortion taking place under blast, windproof net has frame and ribs to fix, and keeps its flatness.The support arrangement of the size of every windproof net and air cooling steel truss is complementary, and is convenient to take root on steel truss.Wire can adopt zinc-coated wire or stainless steel wire.Windproof net can adopt and be bolted on the air cooling platform steel truss, and the top is concordant with air cooling platform.If desired, also can adopt bolt or colligation splicing fixing between the windproof net of each piece.
Above content is to further describing that the present invention did in conjunction with concrete preferred implementation; can not assert that the specific embodiment of the present invention only limits to this; for the general technical staff of the technical field of the invention; without departing from the inventive concept of the premise; can also make some simple deduction or replace, all should be considered as belonging to the present invention and determine scope of patent protection by claims of being submitted to.
Claims (5)
1. device that improves force ventilation direct air cooled condenser efficiency is characterized in that: comprise air cooling platform and around air cooling platform the downward windproof net that is provided with, windproof net adopts and is bolted on the air cooling platform steel truss, the top is concordant with air cooling platform.
2. a kind of according to claim 1 device that improves force ventilation direct air cooled condenser efficiency is characterized in that: described windproof net has frame and ribs to fix.
3. a kind of according to claim 1 device that improves force ventilation direct air cooled condenser efficiency is characterized in that: the support arrangement of described windproof net size and air cooling steel truss is complementary, and is convenient to take root on steel truss.
4. a kind of according to claim 1 device that improves force ventilation direct air cooled condenser efficiency is characterized in that: described windproof net is a multiple layer metal silk screen, and wire can adopt zinc-coated wire or stainless steel wire.
5. a kind of according to claim 1 device that improves force ventilation direct air cooled condenser efficiency is characterized in that: also can adopt bolt or colligation splicing fixing between the windproof net of described each piece.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205648304U CN201926327U (en) | 2010-10-20 | 2010-10-20 | Device for improving energy efficiency of mechanical ventilation direct air-cooling condenser |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205648304U CN201926327U (en) | 2010-10-20 | 2010-10-20 | Device for improving energy efficiency of mechanical ventilation direct air-cooling condenser |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201926327U true CN201926327U (en) | 2011-08-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205648304U Expired - Lifetime CN201926327U (en) | 2010-10-20 | 2010-10-20 | Device for improving energy efficiency of mechanical ventilation direct air-cooling condenser |
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| CN (1) | CN201926327U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103148709A (en) * | 2013-03-20 | 2013-06-12 | 北京奇点时空科技发展有限公司 | Windproof device of direct air-cooling system, windproof control system and windproof control method |
| CN104654891A (en) * | 2015-02-10 | 2015-05-27 | 重庆蜀东天益空气冷却器有限公司 | Air cooler wind-break wall |
| CN107941036A (en) * | 2017-12-21 | 2018-04-20 | 中国电力工程顾问集团西北电力设计院有限公司 | A kind of subsidiary engine cooling water system of high-order arrangement |
-
2010
- 2010-10-20 CN CN2010205648304U patent/CN201926327U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103148709A (en) * | 2013-03-20 | 2013-06-12 | 北京奇点时空科技发展有限公司 | Windproof device of direct air-cooling system, windproof control system and windproof control method |
| CN104654891A (en) * | 2015-02-10 | 2015-05-27 | 重庆蜀东天益空气冷却器有限公司 | Air cooler wind-break wall |
| CN107941036A (en) * | 2017-12-21 | 2018-04-20 | 中国电力工程顾问集团西北电力设计院有限公司 | A kind of subsidiary engine cooling water system of high-order arrangement |
| CN107941036B (en) * | 2017-12-21 | 2023-08-22 | 中国电力工程顾问集团西北电力设计院有限公司 | Auxiliary engine cooling water system arranged at high position |
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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: NORTHWEST ELECTRIC POWER DESIGN INSTITUTE OF CHINA Free format text: FORMER NAME: NORTHWEST ELECTRIC POWER DESIGN INSTITUTE, CHINA POWER ENGINEERING CONSULTING GROUP CORPORATION |
|
| CP01 | Change in the name or title of a patent holder |
Address after: 710075 Xi'an province high tech Development Zone, unity South Road, No. 22, No. Patentee after: NORTHWEST ELECTRIC POWER DESIGN INSTITUTE CO., LTD. OF CHINA POWER ENGINEERING CONSULTING GROUP Address before: 710075 Xi'an province high tech Development Zone, unity South Road, No. 22, No. Patentee before: Northwest Electric Power Design Institute, China Power Engineering Consulting Group Corporation |
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| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110810 |