CN205209272U - Air cooling island and blower device thereof - Google Patents
Air cooling island and blower device thereof Download PDFInfo
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- CN205209272U CN205209272U CN201520972413.6U CN201520972413U CN205209272U CN 205209272 U CN205209272 U CN 205209272U CN 201520972413 U CN201520972413 U CN 201520972413U CN 205209272 U CN205209272 U CN 205209272U
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Abstract
The utility model discloses an air cooling island and blower device thereof. This blower device includes following part: fan, valve and actuating mechanism, wherein, the valve sets up in the dryer below of fan for the airflow channel of dryer opens or closes, actuating mechanism is used for control flap to be in open mode or closed condition, when being in summer during the mode, actuating mechanism is in the open mode with the valve, and the both sides air passes through the inside wind channel of dryer intercommunication about the dryer, under the rotation effect of flabellum, can deliver to the heat exchange tube surface from the dryer with the cold air of air cooling platform below, and the steam inside with the heat exchange tube carries out the heat transfer, when being in winter during the mode, the fan is under the stopped status, and actuating mechanism is in the closed condition with the valve, and the both sides air is kept apart about the dryer, and the fan can not reverse and result in the cold wind convection current promptly, has eliminated the influence of cold air convection current to the heat exchange tube, makes the heat exchange tube dispel the heat under natural state, and the emergence probability of greatly reduced heat exchange tube in winter frost crack phenomenon has improved the operational safety of unit.
Description
Technical field
The utility model relates to air cooling system technical field, particularly a kind of Air-Cooling Island and blower fan apparatus thereof.
Background technology
In the northeast of China, North China, the Northwest, coal resources are abundanter, but water resource is very deficient, and adopting air cooling system every year can saving water resource more than 90 percent than adopting humid-cool system.Wherein, the quality that air cooling apparatus runs is directly connected to security and the economy of power plant's operation.
Please refer to Fig. 1 and Fig. 2, Fig. 1 is the structural representation of a kind of Air-Cooling Island of prior art; Fig. 2 is the schematic side view of a kind of Air-Cooling Island of prior art.
At present, air cooling generation technology because can better solve generating water shortage problem, therefore is widely used in power field.Wherein air cooling tubes condenser 2 is for realizing one of key equipment of air cooling generating.Air cooling tubes condenser 2 mainly comprises steam-distributing pipe 6, lower collecting box and at least one group of heat-exchanging tube bundle, every sheet heat-exchanging tube bundle specifically comprises again some heat-exchange finned tubes, each finned tube has heat exchanger tube and is connected to the fin on heat exchanger tube, and heat exchanger tube has import and outlet.The body of steam-distributing pipe 6 is provided with steam inlet and some gas distributing openings, the vapours that steam inlet produces for connecting power plants generating electricity, gas distributing opening is the outlet of vapours, and gas distributing opening connects the heat exchanger tube import of tube bank, and it is inner that gas flows into heat exchanger tube through gas distributing opening.
Wherein, the main and cooled external air heat exchange of the gas in heat exchanger tube, cooled external air is directly supplied by force ventilation mode.Namely the below of air cooling tubes condenser 2 is provided with some blower fans 3, and cool exterior air is carried formation air-flow by blower fan 3 from bottom to top, and air-flow flows through heat exchanger tube surface and carries out heat exchange with heat exchanger tube internal gas simultaneously.
The air cooling method of operation is divided into summer mode and winter mode, and when environment temperature is higher than predetermined value, Air-Cooling Island runs and is in summer mode, and namely blower fan 3 is opened as air cooling tubes condenser 2 provides heat exchange cold air; When environment temperature is lower than certain setting value, Air-Cooling Island is in winter mode, and air cooling tubes condenser 2 is in natural heat-exchange state, and namely blower fan 3 cuts out, and reduces cold wind convection current as far as possible.Especially winter, antifreeze is one of matter of utmost importance considered during Air-Cooling Island runs.
But, even if blower fan cuts out in actual applications, or the convection current of unavoidable formation cold wind, the phenomenon of bursting by freezing heat exchanger tube is still frequent to be occurred, the safe operation of serious threat unit.
Therefore, how reducing cold wind convection current, solve above technical problem, is those skilled in that art's technical problems urgently to be resolved hurrily.
Utility model content
For solving the problems of the technologies described above, the utility model provides a kind of blower fan apparatus of Air-Cooling Island, also comprises with lower component:
Valve, is arranged at the air inlet channel below air duct of described blower fan, is used to open or close the gas channel of described air duct;
Executing agency, controls described valve and is in open mode or closed condition.
The below of air cooling tubes condenser can be furnished with some above-mentioned blower fan apparatus, when being in summer mode, valve is in open mode by executing agency, air duct upper and lower both sides air is communicated with by the inner air channel of air duct, under the rotary action of flabellum, cold air below air cooling platform can be delivered to heat exchanger tube surface from air duct, carry out heat exchange with the steam of heat exchanger tube inside; When being in winter mode; under fan parking state; valve is in closed condition by executing agency; air duct upper and lower both sides air insulated; namely fan can not reverse and cause cold wind convection current, eliminates the impact of cold air convection exchange heat pipe, heat exchanger tube is dispelled the heat in its natural state; greatly reduce the probability of happening of heat exchanger tube bursting by freezing in winter phenomenon, improve the safety in operation of unit.
Optionally, described executing agency can control described valve and be in different opening.
Optionally, described executing agency is electric operator, and described electric operator is electrically connected with described valve.
Optionally, described electric operator is installed on the control cables crane span structure lateral wall on the upside of described air duct.
Optionally, described valve is shutter, and described shutter is lifted on the lower surface of the air cooling platform of Air-Cooling Island by support, and described executing agency drives described shutter to open or close by connecting rod.
On the basis of above-mentioned blower fan apparatus, the utility model additionally provides a kind of Air-Cooling Island, comprise air cooling platform, described air cooling platform is provided with air cooling tubes condenser and is arranged at least one blower fan apparatus below described air cooling tubes condenser, described blower fan apparatus is the blower fan apparatus described in above-mentioned any one, and in described blower fan apparatus, air duct is arranged downward.
Optionally, also comprise with lower component:
Temperature detection part, for detecting the surface temperature signal of air cooling tubes condenser;
Controller, is electrically connected with described temperature detection part, according to the aperture of the temperature signal control blower fan valve corresponding with this air cooling tubes condenser that described temperature detection part detects.
Air-Cooling Island in the utility model comprises above-mentioned blower fan apparatus, therefore Air-Cooling Island also has the above-mentioned technique effect of blower fan apparatus.
Accompanying drawing explanation
Fig. 1 is the structural representation of a kind of Air-Cooling Island of prior art;
Fig. 2 is the schematic side view of a kind of Air-Cooling Island of prior art;
Fig. 3 is the structural representation of the blower fan apparatus of a kind of detailed description of the invention hollow of the utility model cool island;
Fig. 4 is the top view shown in Fig. 3.
Wherein, the one-to-one relationship in Fig. 1 to Fig. 4 between component names and Reference numeral is as follows:
Air cooling platform 1, air cooling tubes condenser 2, following current tube bank 21, adverse current tube bank 22, blower fan 3, support column 4, ladder stand 5, steam-distributing pipe 6, header 7;
Air duct 1-1, motor 1-2, valve 1-3, executing agency 1-4, control cables crane span structure 1-5, support 1-6, connecting rod 1-7, fan unit pavement 1-8.
Detailed description of the invention
For the technical problem of the air cooling tubes condenser heat exchanger tube bursting by freezing existed in prior art, conduct in-depth research herein, research finds that the main cause that cold wind convection current is formed is: fan leaf reverses.Fan leaf is a free swivel, and very easily by the impact of wind direction, even if fan parking, external wind is to being easy to cause flabellum to rotate backward.
On the basis of above-mentioned research, propose a kind of technical scheme avoiding fan parking reversion to form cold wind convection current herein, specifically describe and refer to hereafter.
In order to make those skilled in the art understand the technical solution of the utility model better, below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.
Incorporated by reference to Fig. 1 and Fig. 2 in background technology, Air-Cooling Island comprises air cooling platform 1, air cooling platform 1 is supported in ground by support column 4, air cooling tubes condenser is provided with above air cooling platform 1, the parts such as blower fan, generally for the maintenance being convenient to parts above air cooling platform 1, maintenance, also be provided with ladder stand 5 further, the primary structure of air cooling tubes condenser can with reference to the description in background technology, heat exchanger tube can be flat tube, fin can for being arranged at the wavy fin of continuous print on flat tube, flat tube generally adopts steel combined with aluminum pipe, the section bar of fin is also generally aluminium, fin is fixed on the two sides of flat tube by soldering.It should be noted that, the side of flat tube described herein refers to the larger face of width.
The body of steam-distributing pipe is provided with steam inlet and some gas distributing openings, the vapours that steam inlet produces for connecting power plants generating electricity, gas distributing opening is the outlet of vapours, and gas distributing opening connects the heat exchanger tube import of tube bank, and it is inner that gas flows into heat exchanger tube through gas distributing opening; Lower collecting box is mainly used in collecting gas after condensed water and heat exchange, its casing is provided with several and collects mouth, collect the outlet of mouth communicating pipe intrafascicular heat exchanger tube, enter vapours in heat exchanger tube after heat exchanger tube heat exchange, water vapour major part in vapours be converted into condensed water from collection mouth enter lower collecting box inside, and then by lower collecting box outlet outflow in case boiler use.The unconverted portion gas for condensed water also enters lower collecting box inside from collection mouth simultaneously.Finally enter header 7 from each lower collecting box.
Usually, the position of steam-distributing pipe is higher than the position of lower collecting box, air cooling tubes condenser comprises a steam-distributing pipe and is positioned at two lower collecting box of the left and right sides, below, is respectively arranged with tube bank between steam-distributing pipe and two lower collecting box, namely usually described A type Air-Cooling Island.
Please refer to Fig. 3 and Fig. 4, Fig. 3 is the structural representation of the blower fan apparatus of a kind of detailed description of the invention hollow of the utility model cool island; Fig. 4 is the top view shown in Fig. 3.
The below of air cooling platform 1 is provided with at least one blower fan apparatus, generally the quantity of air cooling tubes condenser is provided with N row, often arranges and be placed with some blower fan apparatus.Blower fan apparatus comprises blower fan, valve 1-3, executing agency 1-4.Blower fan has motor 1-2, air duct 1-1, air duct 1-1 inside is provided with flabellum, valve 1-3 is arranged at below air duct 1-1, the Main Function of valve 1-3 is the gas channel opening or closing air duct 1-1, that is, when valve 1-3 is in open mode, start blower fan, above air below air duct 1-1 can being delivered under flabellum effect, forced heat radiation is carried out to the tube bank of top and fin; When valve 1-3 be in closed condition, blower fan be in stopped status time, upper and lower for air duct 1-1 space isolates by valve 1-3, and the gas passage of air duct 1-1 inside is closed, and the gas of valve 1-3 both sides can not form convection current by air duct 1-1.
Further, the utility model also comprises the executing agency 1-4 that by-pass valve control 1-3 is in open mode and closed condition further.Particularly, executing agency 1-4 can be man-operated mechanism, also can be electric operator, when executing agency 1-4 is electric operator, also must will arrange controller in system, and controller controls electric operator and opens or closes valve 1-3.Electric operator is installed on the control cables crane span structure 1-5 lateral wall on the upside of described air duct 1-1.Control cables crane span structure 1-5 is arranged on fan unit pavement 1-8 both sides, and fan unit pavement 1-8 is the pavement can walked above for people.Please refer to Fig. 3, control cables crane span structure is defined as inner side towards the side of air duct 1-1 inner surface herein, correspondingly opposite side is outside.
The below of air cooling tubes condenser can be furnished with some above-mentioned blower fan apparatus, when being in summer mode, valve 1-3 is in open mode by executing agency 1-4, air duct 1-1 upper and lower both sides air is communicated with by the inner air channel of air duct 1-1, under the rotary action of flabellum, cold air below air cooling platform 1 can be delivered to heat exchanger tube surface from air duct 1-1, carry out heat exchange with the steam of heat exchanger tube inside; When being in winter mode; under fan parking state; valve 1-3 is in closed condition by executing agency 1-4; air duct 1-1 upper and lower both sides air insulated; namely air duct 1-1 can not reverse and cause cold wind convection current, eliminates the impact of cold air convection exchange heat pipe, heat exchanger tube is dispelled the heat in its natural state; greatly reduce the probability of happening of heat exchanger tube bursting by freezing in winter phenomenon, improve the safety in operation of unit.
Just as described above, the operation of Air-Cooling Island comprises summer mode and winter mode, two-mode judges in the following manner: when environment temperature three measured values are more than or equal to more than 4 DEG C 5 minutes all always, Air-Cooling Island runs and is in summer mode, now open valve 1-3, start blower fan, utilize cold air to exchange heat pipe heat exchanging; When three measured values of environment temperature are all less than 2 DEG C, Air-Cooling Island runs and is in winter mode, blower fan power-off, and valve-off 1-3, the isolating valve simultaneously on steam off distributing pipe and vacuum pumping valve.
Certainly, according to specific design, one or several adverse current tube bank 22 can be set in every side, stop the frozen pipe risk of heat exchanger tube.Usually, the direction that vapours flows to lower collecting box by steam-distributing pipe is defined as positive flow, correspondingly, rightabout is defined as adverse current.
Some blower fan apparatus are provided with in Air-Cooling Island; the heat exchanger tube that each blower fan apparatus is corresponding certain; because heat exchanger tube comprises following current tube bank 21 and adverse current tube bank 22; correspondingly; the blower fan that 21 correspondences are restrained in following current is concurrent draught fan, and the blower fan that adverse current restrains 22 correspondences is adverse current blower fan, if the anti-frost protection of the fan starting reversion of adverse current tube bank 22 in running; these row and adjacent column concurrent draught fan should remain on running status, and namely valve 1-3 is in open mode.
Air cooling system is in real work, and not heat exchanger tube surface temperature is all identical everywhere, and namely the surface temperature of part heat exchanger tube is higher, and the surface temperature of part heat exchanger tube is lower.Correspondingly, heat exchanger tube surface temperature high needs increases cold air amount.
For above phenomenon, propose herein to improve blower fan apparatus further.
In above-mentioned embodiment, executing agency 1-4 controllable valve door 1-3 is in different opening, the control of valve 1-3 aperture can according to the surface temperature of its corresponding heat exchanger tube, the detection of heat exchanger tube surface temperature can be realized by temperature detection part, be electrically connected with temperature detection part, the temperature signal detected according to described temperature detection part controls the aperture of the blower fan valve 1-3 corresponding with this air cooling tubes condenser, to realize the normal operation of Air-Cooling Island.
Temperature detection part can, for being located at the temperature sensor on heat exchanger tube surface, can certainly be far infrared inductor.
The valve 1-3 of the various embodiments described above can shutter, and shutter is lifted on the lower surface of air cooling platform by support 1-6.Executing agency 1-4 drives described shutter to open or close by connecting rod 1-7, and shutter is simple.And install the equipment that protects of steel grating in prior art in air duct 1-1 import, shutter can replace steel grating to be protected, and simplifies air cooling island structure further.
The form of valve 1-3 is not limited to shutter form, can also be other forms.
Air-Cooling Island in the utility model comprises at least one above-mentioned blower fan apparatus, therefore Air-Cooling Island also has the above-mentioned technique effect of blower fan apparatus.
Above Air-Cooling Island provided by the utility model and blower fan apparatus thereof are described in detail.Apply specific case herein to set forth principle of the present utility model and embodiment, the explanation of above embodiment just understands method of the present utility model and core concept thereof for helping.Should be understood that; for those skilled in the art; under the prerequisite not departing from the utility model principle, can also carry out some improvement and modification to the utility model, these improve and modify and also fall in the protection domain of the utility model claim.
Claims (7)
1. a blower fan apparatus for Air-Cooling Island, comprises blower fan, it is characterized in that, also comprises with lower component:
Valve (1-3), is arranged at air duct (1-1) below of described blower fan, is used to open or close the gas channel of described air duct (1-1);
Executing agency (1-4), controls described valve (1-3) and is in open mode or closed condition.
2. the blower fan apparatus of Air-Cooling Island as claimed in claim 1, it is characterized in that, described executing agency (1-4) can control described valve (1-3) and be in different opening.
3. the blower fan apparatus of Air-Cooling Island as claimed in claim 2, it is characterized in that, described executing agency (1-4) is electric operator, and described electric operator is electrically connected with described valve (1-3).
4. the blower fan apparatus of Air-Cooling Island as claimed in claim 3, is characterized in that, described electric operator is installed on control cables crane span structure (1-5) lateral wall of described air duct (1-1) upside.
5. the blower fan apparatus of the Air-Cooling Island as described in any one of Claims 1-4, it is characterized in that, described valve (1-3) is shutter, described shutter is lifted on the lower surface of the air cooling platform (1) of Air-Cooling Island by support (1-6), and described executing agency (1-4) drives described shutter to open or close by connecting rod (1-7).
6. an Air-Cooling Island, comprise air cooling platform (1), described air cooling platform (1) is provided with air cooling tubes condenser and is arranged at least one blower fan apparatus below described air cooling tubes condenser, it is characterized in that, described blower fan apparatus is the blower fan apparatus described in any one of claim 1 to 5, and in described blower fan apparatus, air duct (1-1) is arranged downward.
7. Air-Cooling Island as claimed in claim 6, is characterized in that, also comprise with lower component:
Temperature detection part, for detecting the surface temperature signal of air cooling tubes condenser;
Controller, is electrically connected with described temperature detection part, according to the aperture of the temperature signal control blower fan valve (1-3) corresponding with this air cooling tubes condenser that described temperature detection part detects.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520972413.6U CN205209272U (en) | 2015-11-30 | 2015-11-30 | Air cooling island and blower device thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520972413.6U CN205209272U (en) | 2015-11-30 | 2015-11-30 | Air cooling island and blower device thereof |
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| CN205209272U true CN205209272U (en) | 2016-05-04 |
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| CN201520972413.6U Active CN205209272U (en) | 2015-11-30 | 2015-11-30 | Air cooling island and blower device thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110234953A (en) * | 2017-01-30 | 2019-09-13 | 比利时斯派奇干式冷却公司 | Air cooled condenser with airflow diffuser |
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2015
- 2015-11-30 CN CN201520972413.6U patent/CN205209272U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110234953A (en) * | 2017-01-30 | 2019-09-13 | 比利时斯派奇干式冷却公司 | Air cooled condenser with airflow diffuser |
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