CN205642115U - Air guide device for air cooling tower of indirect air cooling unit - Google Patents
Air guide device for air cooling tower of indirect air cooling unit Download PDFInfo
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- CN205642115U CN205642115U CN201620341807.6U CN201620341807U CN205642115U CN 205642115 U CN205642115 U CN 205642115U CN 201620341807 U CN201620341807 U CN 201620341807U CN 205642115 U CN205642115 U CN 205642115U
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- air cooling
- air
- cooling tower
- deflector
- indirect
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- 238000001816 cooling Methods 0.000 title claims abstract description 90
- 239000004744 fabric Substances 0.000 claims description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 28
- 230000007613 environmental effect Effects 0.000 abstract description 3
- 229910000831 Steel Inorganic materials 0.000 description 5
- 239000000498 cooling water Substances 0.000 description 5
- 239000010959 steel Substances 0.000 description 5
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- 230000005855 radiation Effects 0.000 description 4
- 238000004458 analytical method Methods 0.000 description 3
- 238000004364 calculation method Methods 0.000 description 3
- 238000004088 simulation Methods 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 238000011056 performance test Methods 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 206010044565 Tremor Diseases 0.000 description 1
- 230000002528 anti-freeze Effects 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 230000003134 recirculating effect Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 238000010977 unit operation Methods 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
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- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
The utility model discloses an air guiding device for indirect air cooling unit air cooling tower, the device comprise a plurality of guide plates, and the guide plate encircles and arranges in the air cooling tower outside, and height such as with the air cooling radiator. The guide plate group and the tangent of the outer edge of the radiator at the bottom of the air cooling tower form a certain angle A (the angle changes along with the change of the environmental wind direction). When the environment wind blows, the device adjusts the angle A according to the environment wind direction, thereby forms a vortex with the air water conservancy diversion of environment for cooling air is comparatively even in each sector distribution of radiator, strengthens the convection current of cooling air and finned tube. And, the vortex flow weakens the intensity of the cross-over wind to some extent. The air guide device weakens the influence of environmental wind on the thermal performance of the air cooling tower on the whole, and improves the economical efficiency and the safety of the indirect air cooling unit.
Description
[technical field]
This utility model belongs to thermal energy exchange and air force field, relates to a kind of indirect dry cooling tower, and specifically one
Plant the air guide device for indirect air cooling unit air cooling tower.
[background technology]
Prospect of Utility Air Cooling is as when the effective water-saving thermal power generating technology of former, the deficientest in water resource
The extensively application of the power industry in area is trend of the times.Looking forward to the future, Electric Factory Air-Cooling technical prospect is still had an optimistic view of,
It can not only be applied to water-deficient area, even if the area abundant at water source, from reducing water resources consumption, promoting water
From the point of view of the angle of resources, it may have the highest actual application value.
The air cooling system being currently used in power plant mainly has three kinds: direct air cooling system, band direct-contact type condenser
The indirect air cooling system (Harmon formula) of indirect air cooling system (Hai Leshi) and belt surface formula condenser.
Direct air cooling system water-saving result is the most notable, but heat-economy is relatively poor, and " changing water with coal " is it
Marked feature, the summer high temperature period is especially pronounced: when Direct Air-cooled Unit is run under summer high temperature high back pressure,
Prominent next environment strong wind can cause unit back pressuce suddenly to increase even generation chaser accident completely.
Indirect air cooling system is better than direct air cooling system to the prevention ability of hot blast in summer, has that noise is little, is subject to
The advantages such as the big wind effect of environment is less.Fig. 1 be domestic commonly used between cooling system schematic flow sheet (SCAL
Type).
SCAL type indirect air cooling system and conventional humid-cool system basic simlarity, difference is that a cooling system is adopted
Substitute cooling stack by dry cooling tower, substitute recirculated water with demineralized water, cool down water with Closed Cycle
System replaces substituting recirculating cooling water system.During cooling water temperature change, volume also changes, therefore need to arrange swollen
Swollen water tank, tank top is connected with rushing nitrogen system, the change that the nitrogen of certain pressure both can be long-pending to cooling water body
Redeeming, also can make cooling water avoid and air contact, thus ensures to cool down the water quality of water.At the bottom of cooling tower
Portion is provided with water storage tank and two water pumps, can be to the air cooling heat radiator water-filling in cooling tower.The vertical cloth of air cooling heat radiator
Putting at air cooling tower peripheral, radiator is outer around oval steel fin or the pipe of nested rectangle steel fin by oval steel pipe
Shu Zucheng.Oval steel pipe and outside fin all carry out the overall zinc-plated process of outer surface.Radiator is arranged on dry and cold
In tower, whole system uses natural ventilation system cooling.
Relevant service data and performance test results show, ambient wind affects each sector by the change of wind angle
The static pressure of air inlet, thus between cooling system performance produce impact.The change of air inlet pressure makes each sector enter
Air quantity is different, and the leaving water temperature of corresponding sector also changes, thus the overall outlet water temperature of indirect cool tower and unit
Back pressure changes.Correlation values calculates and performance test results shows, the sector that outlet water temperature is minimum always exists
Windward side sector, the highest sector of outlet water temperature is at trailing flank sector.
Ambient wind velocity between cooling system impact clearly, temperature field in tower, tower external and internal pressure field become with wind speed
Change bigger.Although ambient wind velocity increases, the intake of windward side sector increases, and leaving water temperature reduces, heat radiation energy
Power increases.But the intake of side sector reduces more, and owing to ambient wind velocity increases going out of indirect cool tower top
Mouth resistance increases so that the suction capactity of air cooling tower reduces.Additionally, the existence of local draught may also cause
Tower interior-heat fraction of airflow reduces, and atmospheric density subtractive is little, and the motive force of corresponding free convection reduces.Therefore ring is worked as
When border wind speed increases, the integral heat sink ability of indirect cool tower reduces, and unit back pressuce increases.Especially during strong wind, cold
But tower integral heat sink ability offsets rapidly, and back pressure steeply rises, and has a strong impact on unit operation economy and safety.
[utility model content]
The purpose of this utility model is to solve the problems referred to above, it is provided that a kind of for indirect air cooling unit air cooling tower
Air guide device, this device can make each covering of the fan intake difference of air cooling tower reduce, and reduces outlet water temperature,
And reduce the impact on air cooling tower overall performance of the horizontal draught.The final group of motors of hoist-hole sending and receiving on the whole
Safety in operation and economy.
For reaching above-mentioned purpose, this utility model is achieved by the following technical solutions:
A kind of air guide device for indirect air cooling unit air cooling tower, including being arranged around bottom air cooling tower
Some deflectors of radiator outer rim, deflector is circumferentially uniformly distributed, the spacing between adjacent two panels deflector
For 5m～10m, the angle between every deflector and air cooling tower bottom heat spreader outer rim tangent line 30 °～90 °,
And can be adjusted according to the change of environment wind direction.
This utility model is further improved by:
Described every deflector is vertically built into by armored concrete.
The height of described every deflector is identical with the height of air cooling heat radiator.
Described deflector is connected with controller, according to outside air intake angle adjustment deflector and air cooling tower bottom heat spreader
Angle between edge tangent line, makes air intake vertical with radiator outer rim tangent line all the time.
Compared with prior art, this utility model has the advantages that
This utility model is bottom the air guide device of indirect air cooling unit air cooling tower, deflector and air cooling tower
Radiator outer rim tangent line is angled, and stream cools down air conducting and forms eddy current in the future so that cooling air exists
The especially rear side sector distribution of each sector of dry Cooling heat radiator is more uniform, improves cooling air and flows through finned tube
Around intensity of flow, strengthen fluid interchange characteristic, so that respectively heat radiation sector leaving water temperature diversity reduces.And
This eddy current be formed at the intensity reducing horizontal draught to a certain extent, decrease because draught causes unit
Back pressure such as is ascended to heaven at the probability of interruption of service.
[accompanying drawing explanation]
Fig. 1 is the air cooling system schematic flow sheet of conventional belt surface condenser；
Fig. 2 is overall structure schematic diagram of the present utility model.
Wherein: 1 is boiler；2 is superheater；3 is steam turbine；4 is surface condenser；5 for condensing water
Pump；6 is precision processing device of condensation water；7 is condensate booster pump；8 is low-pressure heater；9 is oxygen-eliminating device；
10 is feed pump；11 is high-pressure heater；12 is water circulating pump；13 is expansion tank；14 dissipate for all-steel
Hot device；15 is air cooling tower；16 is tramp iron separator；17 is electromotor；18 is deflector；A is that deflector is with empty
Cold tower radiator tangent line angle；S is the spacing of adjacent baffle.
[detailed description of the invention]
Below in conjunction with the accompanying drawings this utility model is described in further detail:
Seeing Fig. 2, this utility model includes the some water conservancy diversion being arranged around air cooling tower 15 bottom heat spreader outer rim
Plate 18, deflector 18 is circumferentially uniformly distributed, and the spacing between adjacent two panels deflector 18 is S, spacing by
According to deflector number decile, (as a example by 600MW grade indirect cool tower, spacing about exists air cooling tower outer perimeter
Between 5m～10m, finally determined by numerical simulation and theoretical analysis and calculation), every deflector 18 and air cooling tower
Angle between 15 bottom heat spreader outer rim tangent lines be A, A be 30 °～90 °, and can be according to environment wind direction
Change be adjusted.Every deflector 18 is vertically built into by armored concrete.The height of every deflector 18
Spend identical with the height of air cooling heat radiator.Environment wind direction and deflector 18 and air cooling tower 15 bottom heat spreader outer rim
The relation of the angle between tangent line determines according to numerical simulation and theoretical analysis and calculation, and is installed at air conducting dress
In the control program put.
Principle of the present utility model:
This utility model is applied to indirect cool tower, if being made up of dry tablet deflector, deflector is arranged around air cooling tower
Outside, contour with air cooling heat radiator.Deflector is vertically built into by armored concrete, has streamlined feature.This
Utility model and the air cooling tower bottom heat spreader angled A of outer rim tangent line are (less than 90 °, and around air cooling tower
Heat radiation sector angle is different), this angle A changes along with the change of environment wind direction, has self regulating charactoristic.
The summer high temperature period, leading environment wind blows to dry Cooling heat radiator with certain speed at a certain angle, and this air is led
Stream device, according to the optimal control program carried, adjusts the angle of deflector and air cooling tower bottom heat spreader outer rim tangent line
Degree A, stream cools down air conducting and forms eddy current in the future so that cooling air is outstanding at each sector of dry Cooling heat radiator
It is that rear side sector distribution is more uniform, improve cooling air flow through finned tube around intensity of flow, strengthen flowing and change
Thermal characteristics, so that respectively heat radiation sector leaving water temperature diversity reduces.Further, this eddy current be formed at certain
Reduce the intensity of horizontal draught in degree, decrease because of the draught interruption of service such as cause that unit back pressuce is ascended to heaven
Probability.The most extremely tremble with fear strong wind period additionally, this air guide device can also improve dry Cooling heat radiator
Antifreeze ability.From the point of view of comprehensively, this air guide device can reduce cooling water tower exit temperature, promotes the most empty
Cold unit economy and safety.Can be widely used in the technological transformation of existing air cooling tower.
When designing the angle of deflector:
First, collection of data: the on-site Meteorological Characteristics of indirect air cooling unit and environmental condition, it is important that the winter,
Summer and annual wind direction frequency statistics；Air cooling tower and the structural parameters of surrounding building.
Secondly, field performance is tested, and carries out air cooling tower performance diagnogtics, determines that air cooling tower overall performance is protected with design
The gap of card value.
Finally, numerical simulation and theoretical analysis and calculation combine, and determine that the air that each environment wind direction is corresponding is led
Stream device optimum deflector angle and spacing, and be installed in the control program of air guide device, it is achieved air
Guiding device is according to the self regulating charactoristic of environment wind direction.
Application effect:
600MW indirect air cooling unit, under summer operating mode at full capacity, applies this air guide device, circulates cold
But water tower exit temperature can reduce about 0.3 DEG C.
Above content only illustrates technological thought of the present utility model, it is impossible to limit protection of the present utility model with this
Scope, every according to the technological thought that the utility model proposes, any change done on the basis of technical scheme,
Within each falling within the protection domain of this utility model claims.
Claims (4)
1. for the air guide device of indirect air cooling unit air cooling tower, it is characterised in that include being arranged around
Some deflectors (18) of air cooling tower (15) bottom heat spreader outer rim, deflector (18) the most uniformly divides
Cloth, the spacing between adjacent two panels deflector (18) is 5m～10m, every deflector (18) and air cooling tower
(15) angle between bottom heat spreader outer rim tangent line 30 °～90 °, and can be according to the change of environment wind direction
It is adjusted.
Air guide device for indirect air cooling unit air cooling tower the most according to claim 1, its feature
Being, described every deflector (18) is vertically built into by armored concrete.
Air guide device for indirect air cooling unit air cooling tower the most according to claim 1 and 2, its
Being characterised by, the height of described every deflector (18) is identical with the height of air cooling heat radiator.
Air guide device for indirect air cooling unit air cooling tower the most according to claim 1, its feature
Being, described deflector (18) is connected with controller, according to air intake angle adjustment deflector (18) and air cooling
Angle between tower (15) bottom heat spreader outer rim tangent line, makes air intake vertical with radiator outer rim tangent line all the time.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620341807.6U CN205642115U (en) | 2016-04-21 | 2016-04-21 | Air guide device for air cooling tower of indirect air cooling unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620341807.6U CN205642115U (en) | 2016-04-21 | 2016-04-21 | Air guide device for air cooling tower of indirect air cooling unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205642115U true CN205642115U (en) | 2016-10-12 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620341807.6U Expired - Fee Related CN205642115U (en) | 2016-04-21 | 2016-04-21 | Air guide device for air cooling tower of indirect air cooling unit |
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| Country | Link |
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| CN (1) | CN205642115U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105783572A (en) * | 2016-04-21 | 2016-07-20 | 华能国际电力股份有限公司 | Air guide device for air cooling tower of indirect air cooling unit |
| CN111397429A (en) * | 2020-05-07 | 2020-07-10 | 济南蓝辰能源技术有限公司 | Indirect air cooling air guide module group capable of changing radial direction into different angles |
-
2016
- 2016-04-21 CN CN201620341807.6U patent/CN205642115U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105783572A (en) * | 2016-04-21 | 2016-07-20 | 华能国际电力股份有限公司 | Air guide device for air cooling tower of indirect air cooling unit |
| CN111397429A (en) * | 2020-05-07 | 2020-07-10 | 济南蓝辰能源技术有限公司 | Indirect air cooling air guide module group capable of changing radial direction into different angles |
| CN111397429B (en) * | 2020-05-07 | 2022-02-18 | 济南蓝辰能源技术有限公司 | Indirect air cooling air guide module group capable of changing radial direction into different angles |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20161012 Termination date: 20170421 |