CN107044795A - The controllable air inlet system of large-scale wet-type cooling tower - Google Patents
The controllable air inlet system of large-scale wet-type cooling tower Download PDFInfo
- Publication number
- CN107044795A CN107044795A CN201710314676.1A CN201710314676A CN107044795A CN 107044795 A CN107044795 A CN 107044795A CN 201710314676 A CN201710314676 A CN 201710314676A CN 107044795 A CN107044795 A CN 107044795A
- Authority
- CN
- China
- Prior art keywords
- cooling tower
- guide duct
- air inlet
- blower fan
- pond
- Prior art date
- 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.)
- Pending
Links
- 238000001816 cooling Methods 0.000 title claims abstract description 83
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 15
- 238000005259 measurement Methods 0.000 claims description 3
- 239000000126 substance Substances 0.000 abstract description 4
- 230000009931 harmful effect Effects 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 238000012544 monitoring process Methods 0.000 description 4
- 230000003247 decreasing effect Effects 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- 240000002853 Nelumbo nucifera Species 0.000 description 1
- 235000006508 Nelumbo nucifera Nutrition 0.000 description 1
- 235000006510 Nelumbo pentapetala Nutrition 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F25/00—Component parts of trickle coolers
- F28F25/10—Component parts of trickle coolers for feeding gas or vapour
- F28F25/12—Ducts; Guide vanes, e.g. for carrying currents to distinct zones
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P80/00—Climate change mitigation technologies for sector-wide applications
- Y02P80/10—Efficient use of energy, e.g. using compressed air or pressurized fluid as energy carrier
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Ventilation (AREA)
Abstract
In the bottom of cooling tower, including installing more than one guide duct under rain belt or pond or pond to central area, it exports emersion to the pond water surface, more than one blower fan is connected with guide duct outer end, by artificial or frequency converter or PLC control air quantity, change the cold blast rate entered inside cooling tower, eliminate centre of cooling column region cooling failure, dead space, the harmful effect in the region is eliminated, efficiency of cooling tower is controlled always in optimum level.Efficiency of cooling tower is improved to be obviously improved to the economy and security of power plant and chemical enterprise.
Description
Technical field
The invention belongs to cooling device technical field, it is related to a kind of suitable for thermal power plant, nuclear power plant and large-size chemical
The controllable air inlet system of large-scale wet-type cooling tower that enterprise uses, specifically refers to a kind of be used for large-scale wet-type centre of cooling column region
It is artificial or automatically control intake, the system equipment of efficiency of cooling tower can be effectively improved.
Background technology
Large-scale wet-type cooling tower is mainly used in the enterprises such as thermal power plant, nuclear power plant and large-size chemical, is therrmodynamic system cold end
Important equipment, economy that its operating efficiency is produced to enterprise, security play the role of and its important.It is limited to cooling tower in itself
The reason for structure, wherein the heart have an efficiency bad or failure region, reduce or eliminate this region can be obviously improved it is cold
But tower cooler efficiency.The technology used for this problem, such as wind-guiding Manifold technology, being layered air intake technology etc. can partly solve
Above mentioned problem, but still have weak point：Such as passive air intake, it is impossible to regulate and control on request；Take cooling surface of the rain belt to water
Product, reduces the cooling effect of cooling tower；Stratified charge technology requires higher in terms of mounting technique and cost.
From the point of view of the development of large-scale wet-type cooling tower, its diameter is increasing, the increase of bad or failure region；For hair
For power plant, load variations amplitude and frequency ratio were substantially much bigger in the past, and the change of such cooling tower operating mode is increasingly complex,
Method is lacked to the monitoring and evaluation of cooling tower cooling effectiveness in actual motion；Except control quantity of circulating water, without other effective
Method regulates and controls efficiency of cooling tower.The present invention can will accurately control the cold blast rate into centre of cooling column region, eliminate cooling
The cooling failure at tower center, inactive area, increase regulation and control, the effective means of monitoring efficiency of cooling tower.
The operating condition of large-scale wet-type cooling tower is sufficiently complex, is influenceed by factors, such as atmospheric pressure, temperature
Degree, humidity, wind direction, wind speed, cooling tower interior circulation water, water quality, unit load and cooling tower inwardly projecting orifice, filler etc.；It is
The mass-and heat-transfer process of one Three-Dimensional Dynamic.
The content of the invention
To solve the deficiencies in the prior art, the present invention provides one kind and accurately controls cold air by cooling tower operating efficiency
Into its central area, its center cooling failure, decreasing effect region are eliminated, accurate control cooling tower leaving water temperature improves cooling tower
The controllable air inlet system of cooling tower of efficiency.
The present invention solves the technical method that is used of its technical problem：In the bottom of cold tower, including rain belt, pond, water
More than one guide duct is installed to central area under pond, the outlet emersion of guide duct is arrived when guide duct is under pond and pond
On the water surface of pond, and there is baffle plate to prevent rainwater from entering guide duct, the other end of guide duct is usually in water outside cooling tower rain belt
The outside in pond.
More than one blower fan is connected with guide duct outer end, blower fan can be that blade is adjustable or rotating speed is adjustable.
The control of blower fan can be artificial or frequency converter or PLC, and it is all negative according to environmental factor or heat to control anyway
Operating mode in lotus working conditions change or cooling tower：Temperature, humidity measuring point, the temperature of extraneous air, humidity, wind speed in such as cooling tower
Deng the data transfer for being measured measuring cell by way of data wire or wireless connection to frequency converter or PLC, computer
Blower fan is controlled Deng controller, the purpose is to change the cold blast rate into inside cooling tower, the cooling of centre of cooling column region is eliminated
Failure, dead space.
Angle of fan leaves increase or rotating speed increase when dead space increases, until disappearing；At a temperature of central area
Angle of fan leaves changes when dropping to cooling tower outlet temperature or cooling tower temperature field mean temperature or rotating speed reduces, until blower fan
It is out of service.
The connection of blower fan and guide duct can be fixed or activity, to avoid blower fan from influenceing cooling tower
Air intake, can be placed on below pool edge height when not running.
Size, length, material, structure, shape of guide duct etc. are not limited.
The beneficial effects of the invention are as follows：Solve the cooling decreasing effect or inactive area cooling effect of centre of cooling column region presence
Really undesirable, its air intake is passive, and change of temperature field loses monitoring；, can be in monitoring centre of cooling column region after the present invention is implemented
In the case of change of temperature field, it is accurately controlled and enters air quantity, eliminates the harmful effect in the region, efficiency of cooling tower is controlled always
System is in optimum level.Efficiency of cooling tower is improved to be obviously improved to the economy and security of power plant and chemical enterprise.
Brief description of the drawings
Fig. 1 is the structural representation of the embodiment of the present invention
Wherein：
A. it is blower fan
B. it is controller
C. it is pond of cooling tower
D. it is arranged on the guide duct on the water surface
E. it is arranged on the guide duct in pond
F. it is arranged on the guide duct under pond
G. it is air outlet and blast cap
H. it is air outlet and blast cap
K. it is the rain belt of cooling tower
Stain is parameter measuring point.
Embodiment
With reference to embodiment and accompanying drawing, the present invention is described in further detail, but embodiments of the present invention are not limited
In this.
Embodiment 1
The present invention applies in the cooling tower of coal-burning power plant and nuclear power plant；The controllable air inlet system of large-scale wet-type cooling tower, including
Blower fan, control system, guide duct;It is characterized in that：The blower fan, on the outside of guide duct；The control system, by controlling
Device, parameter measurement original paper, connection component composition；The guide duct, is arranged in rain belt, installs more than one guide duct to center
Region, the outlet of guide duct is on the water surface of pond central area, and divide 2 has baffle plate thereon with upper outlet, prevents rainwater enters from leading
Airduct；The other end of guide duct is fixed on the outside in pond outside cooling tower rain belt；More than one is connected with guide duct outer end
Axial flow blower, be connected on the air inlet of guide duct；The start and stop of blower fan, rotating speed are artificial or Frequency Converter Control, according to environment
Operating mode in factor or thermic load working conditions change or cooling tower：In such as cooling tower outside temperature, humidity, water change, cooling tower
The parameters such as temperature, humidity, the wind speed of air are controlled, when foregoing some or multiple parameters by data connectors are transferred to frequency conversion
During device, the change of Frequency Converter Control rotation speed of fan, the purpose is to change the cold blast rate into inside cooling tower, eliminates centre of cooling column
Region cooling failure, dead space.The rotation speed of fan increase when cooling down dead space increase in cooling tower, until centre of cooling column temperature
Reach cooling tower peripheral temperature or cooling tower mean temperature；Cooling tower outlet temperature or cooling are dropped at a temperature of central area
Rotation speed of fan reduces during the mean temperature of tower temperature field, until blower fan is out of service.The connection of blower fan and guide duct can be fixed
Or activity, for avoid blower fan influence cooling tower air intake, can be placed on when not running pool edge height
Below.
The implementation of the present invention, can be accurately controlled the cold blast rate into centre of cooling column region, to meet central area
The requirement of hot water cooling, makes the cooling condition in centre of cooling column region reach preferable situation, makes the overall cooling effectiveness of cooling tower
Remain at best condition.
Such as embodiment 1 of embodiment 2, difference is that guide duct is arranged in pond of cooling tower.
Such as embodiment 1 of embodiment 3., difference is that guide duct is arranged under pond of cooling tower.
Such as embodiment 1 of embodiment 4., difference is wind turbine layout in the both sides of guide duct import, each one of left and right.
Such as embodiment 1 of embodiment 5., difference is blower fan PLC controls.
Such as embodiment 1 of embodiment 6., difference is that blower fan is controlled by personnel's Manual local and a distant place.
Claims (6)
1. the controllable air inlet system of large-scale wet-type cooling tower, including blower fan, control system, guide duct;It is characterized in that：The blower fan,
On the outside of guide duct；The control system, is made up of controller, parameter measurement original paper, connection component；The guide duct,
It is arranged under rain belt or pond or pond.
2. the controllable air inlet system of large-scale wet-type cooling tower according to claims 1, it is characterized in that：The blower fan, at least
Including more than one centrifugal blower or axial flow blower；The blower fan is controlled alone or in combination；The fixed or movable company of blower fan
It is connected to the front or side of guide duct outer end.
3. the controllable air inlet system of large-scale wet-type cooling tower according to claims 1, it is characterized in that：The controller is by people
Work or PLC or frequency converter or computer control.
4. the controllable air inlet system of large-scale wet-type cooling tower according to claims 1 or 3, it is characterized in that：The PLC or change
Frequency device or computer receive parameter measurement device output.
5. the controllable air inlet system of large-scale wet-type cooling tower according to claims 1, it is characterized in that：The guide duct has one
More than root, and every has more than one air outlet；The air outlet is arranged on the water surface of pond, there is a grade water plate thereon.
6. the controllable air inlet system of large-scale wet-type cooling tower according to claims 1, it is characterized in that：The guide duct, outside
End is arranged in outside cooling tower rain belt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710314676.1A CN107044795A (en) | 2017-05-06 | 2017-05-06 | The controllable air inlet system of large-scale wet-type cooling tower |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710314676.1A CN107044795A (en) | 2017-05-06 | 2017-05-06 | The controllable air inlet system of large-scale wet-type cooling tower |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107044795A true CN107044795A (en) | 2017-08-15 |
Family
ID=59546744
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710314676.1A Pending CN107044795A (en) | 2017-05-06 | 2017-05-06 | The controllable air inlet system of large-scale wet-type cooling tower |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107044795A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101699210A (en) * | 2009-04-30 | 2010-04-28 | 山东大学 | Fresh air supply system for cooling tower |
| CN203605793U (en) * | 2013-10-16 | 2014-05-21 | 济南达能动力技术有限责任公司 | Cooling tower with air supplement tubes |
| CN203824410U (en) * | 2014-05-15 | 2014-09-10 | 西安协力动力科技有限公司 | Auxiliary ventilation device of cooling tower |
| CN104048550A (en) * | 2014-05-29 | 2014-09-17 | 上海电力学院 | Air induction flow gathering siphon discharging device for rain belt of natural venting cooling tower |
| CN206919739U (en) * | 2017-05-06 | 2018-01-23 | 谢祚祥 | The controllable air inlet system of large-scale wet-type cooling tower |
-
2017
- 2017-05-06 CN CN201710314676.1A patent/CN107044795A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101699210A (en) * | 2009-04-30 | 2010-04-28 | 山东大学 | Fresh air supply system for cooling tower |
| CN203605793U (en) * | 2013-10-16 | 2014-05-21 | 济南达能动力技术有限责任公司 | Cooling tower with air supplement tubes |
| CN203824410U (en) * | 2014-05-15 | 2014-09-10 | 西安协力动力科技有限公司 | Auxiliary ventilation device of cooling tower |
| CN104048550A (en) * | 2014-05-29 | 2014-09-17 | 上海电力学院 | Air induction flow gathering siphon discharging device for rain belt of natural venting cooling tower |
| CN206919739U (en) * | 2017-05-06 | 2018-01-23 | 谢祚祥 | The controllable air inlet system of large-scale wet-type cooling tower |
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Application publication date: 20170815 |