CN106370027B - A kind of direct air cooled condenser anti-freezing structure, system and method - Google Patents
A kind of direct air cooled condenser anti-freezing structure, system and method Download PDFInfo
- Publication number
- CN106370027B CN106370027B CN201610856072.5A CN201610856072A CN106370027B CN 106370027 B CN106370027 B CN 106370027B CN 201610856072 A CN201610856072 A CN 201610856072A CN 106370027 B CN106370027 B CN 106370027B
- Authority
- CN
- China
- Prior art keywords
- radiator
- temperature
- dividing wall
- wall
- shutter
- 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.)
- Expired - Fee Related
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28B—STEAM OR VAPOUR CONDENSERS
- F28B9/00—Auxiliary systems, arrangements, or devices
- F28B9/005—Auxiliary systems, arrangements, or devices for protection against freezing
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28B—STEAM OR VAPOUR CONDENSERS
- F28B11/00—Controlling arrangements with features specially adapted for condensers
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
- Other Air-Conditioning Systems (AREA)
Abstract
The invention discloses a kind of direct air cooled condenser anti-freezing structures, system and method, including the dividing wall being arranged around each radiator or every multistage radiator circumference, dividing wall height is identical as draught fan group periphery Height of Wind Break Wall, chimney structure is formed to radiator by dividing wall, the top and bottom of chimney structure is each provided with ventilating part, when radiator tube wall temperature apart from radiator bottom set distance is equal to or less than 10 DEG C, part or all of ventilating part is closed, to reduce the air mass flow for flowing through radiator；The present invention by control ventilating part aperture, it can be achieved that disengaging chimney structure air mass flow control, realize according to ambient temperature variation the air mass flow for flowing through radiator is adjusted；The present invention is according to different ambient temperatures, the occurrence of may be provided with the different bored pipe modes to radiator, radiator is effectively prevent to be frozen during the cold season.
Description
Technical field
The present invention relates to energy source and power technical fields, and in particular to a kind of direct air cooled condenser anti-freezing structure, system and
Method.
Background technique
The rich coal that thermal power plant's Direct Air-Cooling Technology is widely used in China at present lacks water area, such as Inner Mongol, Shanxi, peaceful
The ground such as summer, Xinjiang.Direct air cooled condenser tube bank is the pipe row of more steel oval pipe compositions, at triangular arrangement, installation
On steel supports frame, it is referred to as A type radiator.Direct air cooled condenser uses air as cooling medium to turbine discharge
It is cooled down.These areas are in north of China, and winter outdoor temperature is very low, and the limit can reach -50 DEG C.When generating set winter
When starting or underrun, since thermic load is relatively low in heat exchanger tube, while it is very low to manage outer air themperature, it is easy to ice occur
Freeze phenomenon.The safe and economic operation for influencing equipment, brings serious harm to power-generating enterprise.
Currently, the Direct Air-cooled Unit in northern China extremely frigid zones takes certain preventing freeze in winter measure, than
Steam pipe coil, thermal wind sensor technology and high back pressure running technology are such as thrown, but still has a large amount of frost accident.Cause
This, it is very necessary for designing a kind of reliable direct air cooled condenser defroster.
The present invention aiming at extremely frigid zones direct air cooled condenser, invented a kind of effective anti-freezing device and
Method.
Summary of the invention
In view of the above-mentioned problems, in order to solve the deficiencies in the prior art, the first object of the present invention is to provide a kind of direct sky
Cold condenser anti-freezing structure, the anti-freezing structure are surrounded each radiator by dividing wall, pass through at the top of control radiator and bottom
The ventilating part in portion flows through the air mass flow of radiator to control, so that cold season radiator be avoided to form frost.
The second object of the present invention is to provide a kind of air cooling system, which can be comprising the air-cooled of above-mentioned anti-freezing structure
Island effectively avoids the partial failure of winter Air-Cooling Island.
The third object of the present invention is to provide a kind of method for preventing direct air cooled condenser from freezing, and this method passes through
Realize that various forms of bored pipes carry out protection radiator, antifreeze by the inner heat source progress of radiator itself, antifreezing effect is very
It is good.
The first string provided by the invention is:
A kind of direct air cooled condenser anti-freezing structure, including what is be arranged around each radiator or every multistage radiator circumference
Dividing wall, dividing wall height is identical as draught fan group periphery Height of Wind Break Wall, forms chimney structure, chimney to radiator by dividing wall
The top and bottom of structure is each provided with ventilating part, the radiator tube wall temperature apart from radiator bottom set distance be equal to or
When lower than 10 DEG C, part or all of ventilating part is closed, to reduce the air mass flow for flowing through radiator.
Direct air cooled condenser tube bank is the pipe row of more steel oval pipe compositions, at triangular arrangement, is mounted on steel
On matter support frame, it is referred to as A type radiator, the setting of above-mentioned anti-freezing structure forms encirclement to radiator by dividing wall, then controls
The aperture of ventilating part, with meet temperature it is higher when radiator heat dissipation and when low temperature bored pipe is formed to radiator and is protected
Radiator, so that radiator be avoided to be frozen in chilling temperatures.
The dividing wall transversal cross-section square in shape, i.e. dividing wall form well word structure and surround to radiator, with
The convenient installation to dividing wall.Positioned at chimney structure top portion ventilation component be located at chimney structure bottom ventilation component respectively
It is horizontally disposed.
In setting, the top portion ventilation component and the bottom ventilation component when opening blade relative to radiator
Vertical median plane inclined direction is identical or is oppositely arranged, and when the two blade is oppositely arranged, air is not easy to run from chimney structure.
Temperature acquisition element is set at radiator tube wall, a temperature preferably is respectively set in the corresponding two sides of radiator
Acquisition elements, distance preferably 0.1~20cm of temperature acquisition element distances radiator bottom, at the set-point with radiator bottom
Part between minimum point is at most easy icing, and temperature acquisition data is more accurate, if temperature acquisition element and temperature control are
System connection.
The temperature level that the temperature acquisition element testing shown according to temperature control system arrives, when temperature acquisition element testing
When being less than or equal to 10 DEG C to temperature, bottom ventilation part is stayed open, and adjusts top portion ventilation component aperture, and reduction flows through radiator
Cold air amount, prevent radiator temperature from further declining.
When top portion ventilation component closes entirely, when temperature acquisition element collects temperature still and cannot maintain 10 DEG C or more,
The aperture of bottom ventilation component is gradually reduced, until bottom ventilation component closes entirely, further decreases the cold air for flowing through radiator
Amount, until top portion ventilation component is all closed with bottom ventilation component.
Alternatively, top portion ventilation part stays open when temperature acquisition element testing to temperature is less than or equal to 10 DEG C, adjust
Bottom ventilation component aperture reduces the cold air amount for flowing through radiator, prevents radiator temperature from further declining.
When bottom ventilation component closes entirely, when temperature acquisition element collects temperature still and cannot maintain 10 DEG C or more,
The aperture of top portion ventilation component is gradually reduced, until top portion ventilation component closes entirely, further decreases the cold air for flowing through radiator
Amount, until top portion ventilation component is all closed with bottom ventilation component.
Preferably, the ventilating part is shutter either electric-powered shutter, temperature control system and power-operated shutter
Window connection controls shutter according to temperature height by temperature control system.
Alternative plan provided by the invention is:
A kind of air cooling system, including a kind of direct air cooled condenser anti-freezing structure；The air cooling system can be sky
Cold tower or other power plant's cooling systems.
Third program provided by the invention is:
A method of for preventing direct air cooled condenser from freezing, the dividing wall being arranged around each radiator circumference,
Dividing wall height is identical as draught fan group periphery Height of Wind Break Wall, forms chimney structure, chimney knot to each radiator by dividing wall
The top and bottom of structure is each provided with ventilating part, and the radiator tube wall temperature apart from radiator bottom set distance is equal to or low
When 10 DEG C, part or all of ventilating part is closed, to reduce the air mass flow for flowing through radiator.
Temperature acquisition element is set at radiator tube wall, and temperature acquisition element is connect with temperature control system.
The temperature level that the temperature acquisition element testing shown according to temperature control system arrives, when temperature acquisition element testing
When being less than or equal to 10 DEG C to temperature, bottom ventilation part is stayed open, and adjusts top portion ventilation component aperture, and reduction flows through radiator
Cold air amount, prevent wall temperature from further declining.
When top portion ventilation component closes entirely, when temperature acquisition element collects temperature still and cannot maintain 10 DEG C or more,
The aperture of bottom ventilation component is gradually reduced, until bottom ventilation component closes entirely, further decreases the cold air for flowing through radiator
Amount, until top portion ventilation component is all closed with bottom ventilation component.
The beneficial effects of the present invention are:
1) present invention is by the aperture of control ventilating part, it can be achieved that control to disengaging chimney structure air mass flow, real
Now the air mass flow for flowing through radiator is adjusted according to ambient temperature variation.
2) present invention may be provided with the different bored pipe modes to radiator, effectively according to different ambient temperatures
The occurrence of preventing radiator to be frozen during the cold season.
3) present invention top shutter and bottom blade of louver window opening direction can the setting of identical or opposite direction, can also be real
Now to the adjusting of air mass flow in chimney structure.
Detailed description of the invention
Fig. 1 is existing structure figure；
Fig. 2 is the schematic diagram that the present invention increases dividing wall；
Fig. 3 is existing structure schematic diagram；
Fig. 4 is the cross-sectional view that the present invention increases dividing wall；
Fig. 5 is schematic structural view of the invention；
Fig. 6 is the structural schematic diagram of the embodiment of the present invention 3.
Wherein, 1. draught fan group, 2. windbreaks, 3. dividing walls, 4. blowers, 5. top shutters, 6. bottom shutters, 7. dissipate
Hot device, 8. wall temperature measurement points.
Specific embodiment
The invention will be further described for specific embodiment with reference to the accompanying drawings of the specification:
Windbreak is arranged in the external of draught fan group 1 compared to enjoying in technology in a kind of direct air cooled condenser anti-freezing structure
2, as shown in Figure 1, Figure 3, which includes being arranged around each radiator or n sections every (n=1,2,3 ...) radiator circumference
Dividing wall 3,3 height of dividing wall is identical as peripheral 2 height of windbreak of draught fan group 1, as shown in Figure 2, Figure 4 shows, by dividing wall to every A
Type radiator 7 forms chimney structure, and the top and bottom of chimney structure is each provided with ventilating part, be equal in radiator wall temperature or
When lower than 10 degrees Celsius, part or all of ventilating part is closed, to reduce the air mass flow for flowing through radiator 7.
Direct air cooled condenser tube bank is the pipe row of more steel oval pipe compositions, at triangular arrangement, is mounted on steel
On matter support frame, it is referred to as A type radiator 7, the setting of above-mentioned anti-freezing structure forms encirclement to radiator 7 by dividing wall 3, then
Control the aperture of ventilating part, with meet temperature it is higher when radiator 7 heat dissipation and when low temperature bored pipe is formed to radiator 7
Radiator is protected, so that radiator be avoided to be frozen in chilling temperatures.
The 3 transversal cross-section square in shape of dividing wall, i.e. dividing wall 3 form well word structure and surround to radiator 7.
Top portion ventilation component positioned at chimney structure is respectively horizontally disposed with the bottom ventilation component for being located at chimney structure.
In setting, the top portion ventilation component and the bottom ventilation component when opening blade relative to radiator 7
Vertical median plane inclined direction it is identical or be oppositely arranged, when the two blade is oppositely arranged, air is not easy to run from chimney structure.
The easy ice forming locations in lower part (at 0.1~20cm of radiator bottom) peace every group of 7 left and right sides of A type radiator
Radiator wall temperature measurement point 8 is filled, this temperature value participates in the adjusting that ventilating part opens or closes angle.
It is all or part of to close top, bottom shutter when environment temperature is extremely low, and radiator is be easy to cause to freeze, it reduces
The air mass flow of radiator is flowed through, is realized various forms of " bored pipes ", radiator is protected.So-called " bored pipe " is exactly cold by reducing
But side rate-of flow, a kind of radiator call antifreeze by the inner heat source (there is steam in inside) of itself.
Embodiment 1
Under bored pipe set-up mode:
Top shutter 5 fully opens, and closes bottom shutter 6 completely or partially, reduces bottom and enters chimney structure
Cold air.
When shutter 6 part in bottom is closed, the dividing wall being made of demarcation plate 3, chimney structure has swabbing action, still
There is a small amount of cold air to flow from bottom to top, washes away radiator 7.6 aperture of bottom shutter is adjusted, it is adjustable to flow through radiator 7
Air capacity, reaching can steam in radiator cooling tube and the purpose that freezes.It is relatively high suitable for temperature
Winter environment, such as temperature higher daytime in winter.
When bottom shutter 6 completely closes, flowed from bottom to top without cold air.The chimney structure being made of dividing wall 3
The state open in top half.Bottom is the internal radiator 7 with heat source, and top is than colder surrounding air.It is cold
Air can only cool down the steam in radiator 5, heat transfer coefficient sharp fall, to prevent radiator by free convection
There is freezing phenomena.
In actual motion, bottom shutter 6 always has part cold air to enter radiator from below it is not possible that 100% closes tight
7。
Embodiment 2
Upper bored pipe mode is arranged:
Bottom shutter 6 fully opens, and closes top shutter 5 completely or partially, reduces bottom and enters chimney structure
Cold air.
When shutter 5 part in top is closed, it is identical to close effect for 6 part of bottom shutter of bored pipe under.
When top shutter 5 completely closes, theoretically flowed from bottom to top without cold air.The cigarette being made of dividing wall 3
Chimney structure is in the open state in lower half portion.Top is the internal radiator 7 with heat source, and bottom is more empty than colder environment
Gas.Bored pipe under being different from, cold air can only cool down the steam in radiator 7, bored pipe under ratio of heat transfer coefficient by thermally conductive at this time
It is low, so that radiator be prevented freezing phenomena, effect bored pipe set-up mode under being better than in embodiment 1 occur.
In actual motion, top shutter 5 always has part cold air to enter radiator from below it is not possible that 100% closes tight
7。
Embodiment 3
Top shutter 5, bottom shutter 6 are completely closed simultaneously, realize so-called complete bored pipe.Theoretically can completely by
A type radiator 7 is kept apart with outside air.Even if in view of minute quantity cold air stream caused by being not closed completely as shutter is passed through
Radiator effectively can prevent radiator from freezing since radiator 7 has inner heat source, suitable for anti-under extremely low environment temperature
Freeze, effect is best.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not whole embodiments of the invention, not to limit
The system present invention, all within the spirits and principles of the present invention, any modification, equivalent replacement, improvement and so on should be included in
Within protection scope of the present invention.
In addition to the technical characteristic described in the specification, remaining technical characteristic is technology known to those skilled in the art, in order to prominent
Innovative characteristics of the invention out, details are not described herein for above-mentioned technical characteristic.
Claims (4)
1. a kind of direct air cooled condenser anti-freezing structure, which is characterized in that including surrounding each radiator or every multistage radiator
The dividing wall of circumference setting, dividing wall height is identical as draught fan group periphery Height of Wind Break Wall, forms cigarette to radiator by dividing wall
The top and bottom of chimney structure, chimney structure is each provided with ventilating part, the radiator pipe apart from radiator bottom set distance
When wall temperature is equal to or less than 10 DEG C, part or all of ventilating part is closed, to reduce the air mass flow for flowing through radiator；
Top portion ventilation component positioned at chimney structure is respectively horizontally disposed with the bottom ventilation component for being located at chimney structure；
The top portion ventilation component and the bottom ventilation component blade when opening incline relative to the vertical median plane of radiator
Tilted direction is identical or is oppositely arranged；
Temperature acquisition element is set at radiator tube wall, and temperature acquisition element is connect with temperature control system；Work as temperature acquisition
Element testing temperature at tube wall is less than or equal to 10 DEG C, and when closing part ventilating part, bottom ventilation part is stayed open, and is adjusted
Top portion ventilation component aperture；
The two sides of the tube wall of radiator are arranged in temperature acquisition element, and the distance of temperature acquisition element distances radiator bottom is
0.1~20cm；
The ventilating part is shutter, and temperature control system is connect with shutter, by temperature control system according to temperature height
Shutter is controlled.
2. a kind of direct air cooled condenser anti-freezing structure according to claim 1, which is characterized in that the dividing wall is lateral
Section square in shape.
3. a kind of air cooling system, which is characterized in that including a kind of Direct Air-Cooled condensing such as of any of claims 1-2
Device anti-freezing structure.
4. a kind of method for preventing direct air cooled condenser from freezing, which is characterized in that be arranged around each radiator circumference
Dividing wall, dividing wall height is identical as draught fan group periphery Height of Wind Break Wall, forms chimney knot to each radiator by dividing wall
Structure, the top and bottom of chimney structure are each provided with ventilating part, and ventilating part is electric-powered shutter, set apart from radiator bottom
When the radiator tube wall temperature of set a distance is equal to or less than 10 DEG C, start electric-powered shutter, closes partly or entirely top and bottom
The shutter in portion reduces the air mass flow for flowing through radiator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610856072.5A CN106370027B (en) | 2016-09-27 | 2016-09-27 | A kind of direct air cooled condenser anti-freezing structure, system and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610856072.5A CN106370027B (en) | 2016-09-27 | 2016-09-27 | A kind of direct air cooled condenser anti-freezing structure, system and method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106370027A CN106370027A (en) | 2017-02-01 |
| CN106370027B true CN106370027B (en) | 2019-10-29 |
Family
ID=57898417
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610856072.5A Expired - Fee Related CN106370027B (en) | 2016-09-27 | 2016-09-27 | A kind of direct air cooled condenser anti-freezing structure, system and method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106370027B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109708487B (en) * | 2018-12-05 | 2022-11-25 | 太原理工大学 | Air cooling island freezing state online monitoring method |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1962061C3 (en) * | 1969-12-11 | 1979-05-10 | Kraftwerk Union Ag, 4330 Muelheim | Air condensation system |
| CN101419023A (en) * | 2008-11-12 | 2009-04-29 | 江苏双良空调设备股份有限公司 | Direct air cooling steam condenser with air intake passage switching control function under wind pipe |
| CN101696854A (en) * | 2009-10-29 | 2010-04-21 | 宁夏电力公司电力科学研究院 | Anti-freezing device of air cooling island |
| CN102620576A (en) * | 2012-03-21 | 2012-08-01 | 万逵芳 | Anti-freezing device for air cooling island in power station |
| CN102937383A (en) * | 2012-12-03 | 2013-02-20 | 中能服(北京)节能投资有限公司 | Stream guiding and anti-freezing device for direct air cooling island of power plant |
| CN203980936U (en) * | 2014-06-03 | 2014-12-03 | 国网山西省电力公司电力科学研究院 | A kind of air cooling blower fan defroster |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204346197U (en) * | 2014-12-15 | 2015-05-20 | 新疆晶润泓樵工程技术咨询服务有限公司 | A kind of direct air cooling island of power plant every wind attemperator |
-
2016
- 2016-09-27 CN CN201610856072.5A patent/CN106370027B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1962061C3 (en) * | 1969-12-11 | 1979-05-10 | Kraftwerk Union Ag, 4330 Muelheim | Air condensation system |
| CN101419023A (en) * | 2008-11-12 | 2009-04-29 | 江苏双良空调设备股份有限公司 | Direct air cooling steam condenser with air intake passage switching control function under wind pipe |
| CN101696854A (en) * | 2009-10-29 | 2010-04-21 | 宁夏电力公司电力科学研究院 | Anti-freezing device of air cooling island |
| CN102620576A (en) * | 2012-03-21 | 2012-08-01 | 万逵芳 | Anti-freezing device for air cooling island in power station |
| CN102937383A (en) * | 2012-12-03 | 2013-02-20 | 中能服(北京)节能投资有限公司 | Stream guiding and anti-freezing device for direct air cooling island of power plant |
| CN203980936U (en) * | 2014-06-03 | 2014-12-03 | 国网山西省电力公司电力科学研究院 | A kind of air cooling blower fan defroster |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106370027A (en) | 2017-02-01 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CA1323496C (en) | Air condenser installation | |
| CN109708487B (en) | Air cooling island freezing state online monitoring method | |
| WO2012114134A1 (en) | Arrangement for improving the cooling capacity and freeze protection of air-cooled heat exchangers subjected to the impact of wind | |
| CN104034180A (en) | Indirect air-cooled tower | |
| CN106091198A (en) | Radiant panel changes in temperature integrated air regulation system | |
| CN106370027B (en) | A kind of direct air cooled condenser anti-freezing structure, system and method | |
| CN105674760A (en) | Joint air-cooling system and control method | |
| CN110185935A (en) | A kind of cooling system of permafrost region high temperature transport pipeline | |
| CN112050660B (en) | Time-sharing anti-freezing control method of indirect air cooling tower | |
| CN111442659A (en) | Intelligent anti-freezing system and method applied to air cooling island | |
| CN110793378B (en) | Natural draft cooling tower anti-freezing system and cooling water temperature control method | |
| CN207113650U (en) | A kind of indirect air cooling system freezing protection control device | |
| CN201141735Y (en) | Compound anti-freezing air cooler | |
| CN108398035B (en) | Combined cooling system and method for merging auxiliary machine cooling water into main machine indirect cooling tower | |
| CN212409426U (en) | Intelligent anti-freezing system applied to air cooling island | |
| CN202770253U (en) | Air-cooling condenser freeze-proofing device | |
| US10408551B2 (en) | Columnar cooling tube bundle with wedge-shaped gap | |
| CN102654360A (en) | Direct air-cooling thermal power unit radiating pipe anti-freezing device | |
| CN204346197U (en) | A kind of direct air cooling island of power plant every wind attemperator | |
| CN208996765U (en) | A kind of mine shaft defroster | |
| CN204572567U (en) | A kind of antifreeze air cooling blower fan of air cooling turbo-generator | |
| CN113670087B (en) | Partial pressure anti-freezing device and method for indirect air cooling tower | |
| CN216845754U (en) | Natural ventilation cooling tower anti-freezing system utilizing anti-freezing pipe and environment heat | |
| CN104567526A (en) | Natural ventilation dry cooling tower with bypass air doors | |
| CN204421734U (en) | The gravity-flow ventilation dry cooling tower of bypass air door is set |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| 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: 20191029 Termination date: 20200927 |