CN103591814A - Anti-freezing apparatus for air cooling tower system of indirect air cooling unit - Google Patents
Anti-freezing apparatus for air cooling tower system of indirect air cooling unit Download PDFInfo
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- CN103591814A CN103591814A CN201310627859.0A CN201310627859A CN103591814A CN 103591814 A CN103591814 A CN 103591814A CN 201310627859 A CN201310627859 A CN 201310627859A CN 103591814 A CN103591814 A CN 103591814A
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- air cooling
- cooling tower
- air
- valve
- circulating pump
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- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
The invention provides an anti-freezing apparatus for an air cooling tower system of an indirect air cooling unit. The anti-freezing apparatus comprises an air cooler, an air cooling tower, a radiator and a draining valve, wherein one end of the air cooler is connected with the air cooling tower, the joint of the end of the air cooler and the air cooling tower is provided with a first valve, the other end of the air cooler is connected with the air cooling tower, the joint of the other end of the air cooler and the air cooling tower is provided with a second valve, the air cooler is connected with a self-circulating pump and a cold water circulating pump, the self-circulating pump and the cold water circulating pump are connected in parallel, the self-circulating pump is arranged between and connected with the air cooler and the second valve, the radiator is connected with the air cooler, the air cooling tower is connected with the draining valve, and the air cooling tower is composed of a fan, a spraying device and a water tank. According to the invention, through arrangement of the self-circulating pump, the cold water circulating pump, a drainage pump and a radiating pump, the air cooler and the air cooling tower are prevented from frost damage according to different indoor and outdoor temperatures and different operation modes, so stable and reliable working is guaranteed all the year round.
Description
Technical field
The present invention relates to electrical equipment technical field, refer to especially a kind of defroster of indirect air cooling unit air cooling tower system.
Background technology
The Taiyuan Second Thermal Power Plant fourth phase, No. 7, No. 8 units were 2 * 200MW Air-cooled Unit, at that time due to China's Air-cooled Unit ground zero, the freezed in winter phase, fourth phase air cooling tower radiator leak is comparatively serious, according to statistics, from 1994, go into operation in February, 2009, No. 7, No. 8 unit air cooling tower leaks respectively 5174 and 6101, No. 7 tower radiator leak pipe number accounts for 11.73% of a total of tubes, No. 8 tower radiator leak pipe number accounts for 16.1% of pipe number, 1601 of No. 7 tower radiator gross distortion pipes (not leaking), 1697 of No. 8 tower radiator gross distortion pipes (not leaking).In 1500 yuan of every finned tubes, just change 2,185 ten thousand yuan of the direct economic losses of finned tube, leak relevant with tubing with each section of orientation of living in, No. 7 tower 3,4 segment bases originally do not leak, these two sections all adopt import tubing, are positioned at tower center, and 3,4 sections of leak sources of No. 8 towers are less, and being located at outer shroud and many in 1,2,5 section of leak source of tower northwestern, this is with winter, many northwester had direct relation every year.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of defroster of indirect air cooling unit air cooling tower system, and the air cooling tower radiator leak that solves prior art is comparatively serious, causes the problem of a large amount of economic losses.
For solving the problems of the technologies described above, embodiments of the invention provide a kind of defroster of indirect air cooling unit air cooling tower system, comprise aerial cooler, air cooling tower, radiator and draining valve, described aerial cooler one end is connected with air cooling tower, described aerial cooler one end and air cooling tower connection are provided with the first valve, the described aerial cooler other end is connected with air cooling tower, the described aerial cooler other end and air cooling tower junction are provided with the second valve, described aerial cooler is connected with self-circulating pump and cold water circulation pump, described self-circulating pump and cold water circulation pump are parallel with one another, described self-circulating pump is connected between aerial cooler and the second valve, described radiator is connected with aerial cooler, described air cooling tower is connected with draining valve, described air cooling tower is by blower fan, spray equipment, water tank forms.
Wherein, described assembling is above spray equipment, and described water tank is arranged on spray equipment below.
Wherein, described spray equipment and water tank junction are provided with a wall.
Wherein, described radiator is connected with wall, and described draining valve is connected with water tank.
The beneficial effect of technique scheme of the present invention is as follows:
In such scheme, by set self-circulating pump, cold water circulation pump, draining pump and heat dissipation pump, can be according to the height of indoor and outdoor temperature, the difference of operational mode, guarantees that aerial cooler and air cooling tower are not freezing, thereby annual reliable and stable work is provided; Its reasonable in design, flexible operation, environmental protection and saving, freezing tolerance is strong, and valve leak is good, safe and reliable.
Accompanying drawing explanation
Fig. 1 is the structural representation of the defroster of indirect air cooling unit air cooling tower system of the present invention;
［ main element symbol description ］
1, aerial cooler;
2, air cooling tower;
3, radiator;
4, draining valve;
5, the first valve;
6, the second valve;
7, self-circulating pump;
8, cold water circulation pump;
9, wall;
10, blower fan;
11, spray equipment;
12, water tank.
The specific embodiment
For making the technical problem to be solved in the present invention, technical scheme and advantage clearer, be described in detail below in conjunction with the accompanying drawings and the specific embodiments.
The air cooling tower radiator leak that the present invention is directed to prior art is comparatively serious, causes the problem of a large amount of economic losses, and a kind of indirect air cooling unit air cooling tower system is provided.
As shown in Figure 1, the defroster of a kind of indirect air cooling unit air cooling tower system that embodiments of the invention provide, comprise aerial cooler 1, air cooling tower 2, radiator 3 and draining valve 4, described aerial cooler 1 one end is connected with air cooling tower 2, described aerial cooler 1 one end and air cooling tower 2 connections are provided with the first valve 5, described aerial cooler 1 other end is connected with air cooling tower 2, described aerial cooler 1 other end and air cooling tower 2 junctions are provided with the second valve 6, described aerial cooler 1 is connected with self-circulating pump 7 and cold water circulation pump 8, described self-circulating pump 7 and cold water circulation pump 8 are parallel with one another, described self-circulating pump 7 is connected between aerial cooler 1 and the second valve 6, described radiator 3 is connected with aerial cooler 1, described air cooling tower 2 is connected with draining valve 4, described air cooling tower is by blower fan 10, spray equipment 11, water tank 12 forms.Described blower fan 10 is arranged on spray equipment 11 tops, and described water tank 12 is arranged on spray equipment 11 belows.Described spray equipment 11 and water tank 12 junctions are provided with a wall 9.Described radiator 3 is connected with wall 9, and described draining valve 4 is connected with water tank 12.
Concrete scheme is:
(1) strengthen air cooling tower management:
Winter, air cooling tower should be strengthened management, and meticulous adjustment in service guarantees that water condition normally moves, and should have more perfect operational management system, particularly threw the operation of the section of stopping, and strengthened overhaul management, guaranteed Plant in good condition, and Electrically operated gate, shutter are electronic reliably.
(2) system valve transformation:
Change former bypass valve, draining valve DN900 into DN350 butterfly valve, remove bypass valve, from entrance, directly run in water valve to water tank, avoid stream in former bypass valve and change pipe characteristic.Gateway replacing valve quality is good, non-internal leakage, electronic reliable valve, guarantees that in the winter time the section of moving back moves, and reduces area of dissipation.
(3) air cooling tower gas side is adjusted:
A. increase air cooling tower flowing resistance
Four parts such as the resistance of air cooling tower gas side mainly comprises air inlet resistance, shutter, radiator air side resistance, tower cylinder air outlet resistance.
Air cooling tower air inlet air drag: △ P
2=ε
iv
2 aiρ/2
ε in formula
i---air stream is through the resistance coefficient at air cooling tower air inlet place;
V
ai---air stream is through the speed at air cooling tower air inlet place: M/S;
ρ---air cooling tower inlet air density: kg/m
3.
Air cooling tower outlet air resistance: △ P
3=V
2 aoρ
o/ 2
V in formula
ao---air cooling tower outlet air flow rate: M/S;
Air is by the resistance of radiator and shutter: △ P
1=C
3v
2 aρ/2
C in formula
3---test constant;
V
a---air stream is through the speed of radiator or shutter;
Full tower air side resistance: ∑ △ P
a=△ P
1+ △ P
2+ △ P
3
B. reduce the air quantity by radiator:
Air cooling tower draft: △ P
h=He (ρ
a1+ ρ
a2) * g
In formula: He---air cooling tower effective depth M;
ρ
a1, ρ
a2----air cooling tower is imported and exported atmospheric density: KG/M
3;
G---acceleration of gravity: g=9.8M/S
2.
In the suitable position of air cooling tower, adjustable air side short circuit air channel is set, from the air quantity by radiator, shunt a part of air quantity and directly enter air cooling tower, reduce by the air quantity of radiator.In addition, cold wind and radiator top hot blast by short circuit air channel converge, reduced outlet air temperature, reduced air cooling tower draft, reduced the wind speed by radiator, in the winter time, by reducing air cooling tower air-admitting surface and adjustable short air channel being set, reduce the radiator coefficient of heat transfer, can effectively prevent the leakage of freezing of heat radiation.Before entering the winter, shutter is carried out large repairs, strengthen the maintenance work of shutter, guarantee shutter action message.
By the enforcement of above measure, from winter calendar year 2001, the leakage of heat radiator fin pipe drops to the limit, and leaking now finned tube is to freeze injured finned tube with cause substantially.
Five phase 1 * 200MW Air-cooled Unit, summed up the experience of fourth phase Air-cooled Unit equipment and operation, air cooling apparatus has been carried out to following improvement: a. finned tube metal material adopts the domestic metal material identical with performance with the element of German St37 material, control the content of S, P element, guarantee finned tube metal material mechanical performance, improve finned tube freezing tolerance; B. cowl vent control is improved to T steel control stick processed by original band iron sheet, and an actuator is controlled one group of shutter; C. in air side, install short circuit window additional; D. according to the test of water circulating pump, change water circulating pump parameter, improve system radiating device water flow velocity; E. air cooling system valve adopts the valve of three eccentric metal sealing, improves valve leak.Five phase Air-cooled Unit put into operation and there is no in the winter time so far the finned tube leaking because freezing.
The above is the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, do not departing under the prerequisite of principle of the present invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (4)
1. the defroster of an indirect air cooling unit air cooling tower system, comprise aerial cooler, air cooling tower, radiator and draining valve, it is characterized in that, described aerial cooler one end is connected with air cooling tower, described aerial cooler one end and air cooling tower connection are provided with the first valve, the described aerial cooler other end is connected with air cooling tower, the described aerial cooler other end and air cooling tower junction are provided with the second valve, described aerial cooler is connected with self-circulating pump and cold water circulation pump, described self-circulating pump and cold water circulation pump are parallel with one another, described self-circulating pump is connected between aerial cooler and the second valve, described radiator is connected with aerial cooler, described air cooling tower is connected with draining valve, described air cooling tower is by blower fan, spray equipment, water tank forms.
2. the defroster of indirect air cooling unit air cooling tower system according to claim 1, is characterized in that, described assembling is above spray equipment, and described water tank is arranged on spray equipment below.
3. the defroster of indirect air cooling unit air cooling tower system according to claim 2, is characterized in that, described spray equipment and water tank junction are provided with a wall.
4. the defroster of indirect air cooling unit air cooling tower system according to claim 3, is characterized in that, described radiator is connected with wall, and described draining valve is connected with water tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310627859.0A CN103591814B (en) | 2013-11-29 | 2013-11-29 | A kind of defroster of indirect air cooling unit air cooling tower system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310627859.0A CN103591814B (en) | 2013-11-29 | 2013-11-29 | A kind of defroster of indirect air cooling unit air cooling tower system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103591814A true CN103591814A (en) | 2014-02-19 |
| CN103591814B CN103591814B (en) | 2015-10-28 |
Family
ID=50082050
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310627859.0A Expired - Fee Related CN103591814B (en) | 2013-11-29 | 2013-11-29 | A kind of defroster of indirect air cooling unit air cooling tower system |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104567454A (en) * | 2014-12-31 | 2015-04-29 | 常熟市第二热电有限公司 | Thermal power plant cooling system |
| CN110726329A (en) * | 2019-09-20 | 2020-01-24 | 中国南方电网有限责任公司超高压输电公司广州局 | Automatic control and regulation device for high-temperature spray water of closed cooling tower |
| CN113499670A (en) * | 2021-08-25 | 2021-10-15 | 鼎信阳光环境技术有限公司 | Automatic anti-freezing spraying device suitable for north |
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|---|---|---|---|---|
| JP2002213898A (en) * | 2001-01-17 | 2002-07-31 | Ebara Shinwa Ltd | Method of operating cooling tower, and the cooling tower |
| JP2008309413A (en) * | 2007-06-15 | 2008-12-25 | Hitachi Metals Ltd | Closed type cooling tower and draining method therefor |
| CN101788173A (en) * | 2010-01-22 | 2010-07-28 | 西安工程大学 | Spray air cooler and packless spray cooling tower combined high temperature water chiller |
| CN102654377A (en) * | 2011-03-01 | 2012-09-05 | 中国电力企业联合会科技开发服务中心 | Method for preventing air-cooled heat exchanger of indirect air-cooled flameout generator unit from freezing |
| CN103335540A (en) * | 2013-07-03 | 2013-10-02 | 无锡宇吉科技有限公司 | Water chilling unit |
| CN103344128A (en) * | 2013-07-03 | 2013-10-09 | 无锡宇吉科技有限公司 | Water chilling unit |
-
2013
- 2013-11-29 CN CN201310627859.0A patent/CN103591814B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002213898A (en) * | 2001-01-17 | 2002-07-31 | Ebara Shinwa Ltd | Method of operating cooling tower, and the cooling tower |
| JP2008309413A (en) * | 2007-06-15 | 2008-12-25 | Hitachi Metals Ltd | Closed type cooling tower and draining method therefor |
| CN101788173A (en) * | 2010-01-22 | 2010-07-28 | 西安工程大学 | Spray air cooler and packless spray cooling tower combined high temperature water chiller |
| CN102654377A (en) * | 2011-03-01 | 2012-09-05 | 中国电力企业联合会科技开发服务中心 | Method for preventing air-cooled heat exchanger of indirect air-cooled flameout generator unit from freezing |
| CN103335540A (en) * | 2013-07-03 | 2013-10-02 | 无锡宇吉科技有限公司 | Water chilling unit |
| CN103344128A (en) * | 2013-07-03 | 2013-10-09 | 无锡宇吉科技有限公司 | Water chilling unit |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104567454A (en) * | 2014-12-31 | 2015-04-29 | 常熟市第二热电有限公司 | Thermal power plant cooling system |
| CN110726329A (en) * | 2019-09-20 | 2020-01-24 | 中国南方电网有限责任公司超高压输电公司广州局 | Automatic control and regulation device for high-temperature spray water of closed cooling tower |
| CN113499670A (en) * | 2021-08-25 | 2021-10-15 | 鼎信阳光环境技术有限公司 | Automatic anti-freezing spraying device suitable for north |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103591814B (en) | 2015-10-28 |
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Granted publication date: 20151028 Termination date: 20191129 |