CN114485209B - Intelligent closed cooling tower and control method thereof - Google Patents
Intelligent closed cooling tower and control method thereof Download PDFInfo
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- CN114485209B CN114485209B CN202210096559.3A CN202210096559A CN114485209B CN 114485209 B CN114485209 B CN 114485209B CN 202210096559 A CN202210096559 A CN 202210096559A CN 114485209 B CN114485209 B CN 114485209B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28C—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA COME INTO DIRECT CONTACT WITHOUT CHEMICAL INTERACTION
- F28C1/00—Direct-contact trickle coolers, e.g. cooling towers
- F28C1/14—Direct-contact trickle coolers, e.g. cooling towers comprising also a non-direct contact heat exchange
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- 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
- F28F25/02—Component parts of trickle coolers for distributing, circulating, and accumulating liquid
- F28F25/06—Spray nozzles or spray pipes
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- 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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F27/00—Control arrangements or safety devices specially adapted for heat-exchange or heat-transfer apparatus
- F28F27/003—Control arrangements or safety devices specially adapted for heat-exchange or heat-transfer apparatus specially adapted for cooling towers
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- 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
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
Abstract
The application discloses an intelligent closed cooling tower, which belongs to the field of cooling towers and comprises a tower body, wherein a control system, a heat dissipation coil pipe for allowing condensate to flow, a spraying system for spraying and cooling the heat dissipation coil pipe, a ventilation system for introducing external air and a filler for cooling spray water are arranged in the tower body; the cooling tower has the effects of adapting to environmental changes and saving the power consumption of the cooling tower.
Description
Technical Field
The invention relates to the field of cooling towers, in particular to an intelligent closed cooling tower and a control method thereof.
Background
The cooling tower is a common cooling and heat dissipation device, utilizes water as a coolant to absorb heat and exchange the heat to the air, so as to realize heat dissipation, and is widely applied to the fields of air-conditioning cooling systems, refrigeration, injection molding, power generation, steam turbines, aluminum profile processing, air compressors and the like.
Closed cooling tower is common among the cooling tower, mainly is applied to cooling system's heat dissipation, and closed cooling tower internally mounted generally has the heat exchanger, and in cooling system's condensate got into the heat exchanger, be provided with fan and shower head in the closed cooling tower, took away the heat of heat exchanger through the air and the shower water of circulation to carry out the heat exchange to the condensate, realize the cooling of condensate.
Generally speaking, closed cooling tower needs to utilize simultaneously mobile air and shower water to cool off the heat dissipation, but to the cold condition of weather, natural environment's temperature can effectually carry out the heat exchange to the condensate in the heat exchanger already, leads to the extravagant consumption of fan and the shower head of continuous operation, extravagant energy.
Disclosure of Invention
In order to adapt to environmental changes and save the power consumption of a cooling tower, the application provides an intelligent closed cooling tower and a control method thereof.
The application provides a pair of intelligence closed cooling tower adopts following technical scheme:
the utility model provides an intelligence closed cooling tower, includes the tower body, be provided with control system in the tower body, be used for the cooling coil that the condensate liquid flows, be used for right the cooling coil sprays the spraying system of cooling, is used for letting in outside air's ventilation system and is used for carrying out refrigerated filler to the spray water, control system is including the tower outside temperature sensor who is used for acquireing the tower body outside ambient temperature, be used for acquireing the tower internal temperature in temperature sensor, be used for acquireing the pipe wall temperature sensor of cooling coil lateral wall temperature and be used for controlling spraying system with ventilation system's operating power's controller.
By adopting the technical scheme, the spraying system sprays the heat dissipation coil pipe, and the ventilation system blows air to the heat dissipation coil pipe to dissipate heat and cool condensate in the heat dissipation coil pipe; in addition, the temperature sensors outside the tower, the temperature sensor inside the tower and the pipe wall temperature sensor acquire temperature data to jointly control the operation of the spraying system and the ventilation system, so that the operating power of the spraying system and the ventilation system is adjusted by combining the environmental temperature, the natural conditions are fully utilized, the power consumption generated by the spraying system and the ventilation system is reduced, and the energy is saved.
Optionally, the tower body is provided with an air inlet and an air outlet, the ventilation system comprises a fan arranged at the air outlet, and the controller is electrically connected with the fan.
Through adopting above-mentioned technical scheme, the fan can accelerate the air flow in the tower body.
Optionally, the air inlet is provided with an air inlet shutter, and the controller is further configured to control a blade inclination angle of the air inlet shutter.
By adopting the technical scheme, the power of the fan and the air inlet area of the air inlet are controlled, the utilization rate of cold air outside the tower body is improved in a matching manner, and energy is saved.
Optionally, the air inlet tripe still including connect in blade both ends and rotate connect in the axis of rotation of air intake lateral wall, connect in the driving sprocket of axis of rotation, mesh in driving sprocket's drive chain belt and be used for the drive driving piece that driving sprocket pivoted, the controller is used for controlling the driving piece function.
Through adopting above-mentioned technical scheme, under the effect of driving piece, driving sprocket and drive chain belt, make the blade rotate, realize the controller to the adjustment of blade inclination to control the air inlet area.
Optionally, the heat dissipation coil pipe includes that many are snakelike heat exchange tube, communicate in many of extending the feed liquor pipe of heat exchange tube entrance and communicate in many the drain pipe of heat exchange tube exit, the middle part of heat exchange tube is equipped with the bending segment of buckling and extending, adjacent two the bending segment outer wall of heat exchange tube laminates each other, pipe wall temperature sensor acquires two the temperature of bending segment outer wall junction.
By adopting the technical scheme, the serpentine extension design can enable the path of the condensate flowing in the tower body to be longer, the cooling process to be prolonged, and the opportunities of heat exchange between the condensate and cold air and spray water to be increased, so that the effect of cooling the condensate by heat dissipation is improved; two sections of buckling laminate each other, play the effect of mutual support, improve heat dissipation coil's overall stability to the setting up of the section of buckling makes the heat of the condensate in the adjacent heat exchange tube transmit each other, makes the temperature at the outer wall temperature of the section of buckling can more accurate reflection heat exchange tube middle part, can feed back out the temperature of condensate as better reference, with this control fan and the power that sprays the pump, and reduce the fan and spray the produced consumption of pump.
Optionally, the spraying system includes a spraying pipe disposed above the heat dissipation coil pipe, a water accumulation plate disposed below the filler, and a spraying pump communicated with the spraying pipe and the water accumulation plate.
Through adopting above-mentioned technical scheme, the shower water is cooled off when filling, and the water after the cooling is concentrated in ponding dish, and the spray pump is in pumping back the shower with water again, realizes the cyclic utilization of water.
The application further provides a control method of the intelligent closed cooling tower, which adopts the following technical scheme:
acquiring the ambient temperature outside the tower body, the temperature inside the tower body and the temperature of the side wall of the heat dissipation coil;
and adjusting the operating power of the spraying system and the ventilation system by the controller according to the ambient temperature outside the tower body, the temperature inside the tower body and the temperature of the side wall of the heat dissipation coil.
By adopting the technical scheme, the operating power of the spraying system and the ventilation system is adjusted by combining the temperatures, and the adjustment flexibility is improved.
Optionally, the method for adjusting the operating power of the spraying system and the ventilation system by the controller includes:
when the temperature of the environment outside the tower body is higher than a preset value a, the controller instructs the fan to operate according to 95% -100% of rated power, and the controller instructs the spray pump to operate according to 95% -100% of rated power;
when the temperature of the environment outside the tower body is smaller than a preset value a and the temperature in the tower body is larger than a preset value b, the controller instructs the fan to operate according to 80-85% of rated power, and the controller instructs the spray pump to operate according to 70-80% of the rated power;
when the ambient temperature outside the tower body is less than a preset value a, the temperature inside the tower body is less than a preset value b, and the difference between the temperature of the outer wall of the heat exchange tube and the temperature inside the tower body is less than a preset value c, the controller instructs the fan to operate according to 50% -60% of rated power, and the controller instructs the spray pump to operate according to 40% -50% of rated power;
and when the ambient temperature outside the tower body is less than a preset value a, the temperature inside the tower body is less than a preset value b, and the difference between the temperature of the outer wall of the heat exchange tube and the temperature inside the tower body is greater than a preset value c, the controller instructs the fan to be closed, and the controller instructs the spray pump to be closed.
By adopting the technical scheme, when the ambient temperature outside the tower body is high, the blowing and spraying strength is required to be higher so as to ensure the cooling effect, so that a fan and a spraying pump are required to operate under higher power; and along with the reduction of the ambient temperature outside the tower body, the temperature in the tower body also can reduce thereupon, and required blowing and spraying intensity reduce, therefore the power of fan and spray pump can reduce to the difference between heat exchange tube outer wall temperature and the temperature in the tower body is big more, means that the effect of temperature in the tower body to condensate cooling can be more obvious, consequently can further stop the use of fan and spray pump, reach the effect that reduces the consumption, energy-concerving and environment-protective.
Optionally, the method for adjusting the operating power of the spraying system and the ventilation system by the controller further comprises:
when the ambient temperature outside the tower body is larger than a preset value a, the controller instructs the driving piece to adjust the inclination angle of the blade to 30-40 degrees;
when the ambient temperature outside the tower body is smaller than a preset value a and the temperature inside the tower body is larger than a preset value b, the controller instructs the driving piece to adjust the inclination angle of the blade to 30-40 degrees;
when the ambient temperature outside the tower body is less than a preset value a, the temperature inside the tower body is less than a preset value b, and the difference between the temperature of the outer wall of the heat exchange tube and the temperature inside the tower body is less than a preset value c, the controller instructs the driving piece to adjust the inclination angle of the blade to 50-60 degrees;
when the ambient temperature outside the tower body is smaller than a preset value a, the temperature inside the tower body is smaller than a preset value b, and the difference between the temperature of the outer wall of the heat exchange tube and the temperature inside the tower body is larger than a preset value c, the controller instructs the driving piece to adjust the inclination angle of the blades to 80-90 degrees.
Through adopting above-mentioned technical scheme, the air inlet area cooperation temperature and the intensity of spraying of air inlet tripe are adjusted, have both guaranteed that the air that flows is enough to be used for cooling down, also avoid the condition that water drifted away from the air intake as far as possible, using water wisely.
Optionally, the preset value a is 30-32 ℃, the preset value b is 12-15 ℃, and the preset value c is 20-25 ℃.
Through adopting above-mentioned technical scheme, the setting of above-mentioned predetermined value is effectual to the cooling of condensate, and the adaptation temperature range is wide.
In summary, the present application has the following beneficial effects:
1. according to the cooling system, closed circulating cooling is realized by adopting a closed cooling tower, the spraying system sprays the heat dissipation coil, and the ventilation system blows air to the heat dissipation coil to dissipate heat and cool condensate in the heat dissipation coil; in addition, the work of the spraying system and the ventilation system is jointly controlled through the acquired data of the temperature sensor outside the tower, the temperature sensor inside the tower and the temperature sensor on the pipe wall, so that the running power of the spraying system and the ventilation system is adjusted by combining the environmental temperature, the natural conditions are fully utilized, the power consumption generated by the spraying system and the ventilation system is reduced, and the energy is saved;
2. through three kinds of temperature parameters joint control fans, spray pump and air inlet tripe of environment temperature outside the tower body, temperature in the tower body and heat exchange tube outer wall temperature, realize intelligent control, and adapt to multiple temperature condition, the flexibility of control is high, and the energy consumption is little.
Drawings
Fig. 1 is a plan structure view of an intelligent closed cooling tower in embodiment 1 of the present application.
Fig. 2 is a plan structure view of the inside of the intelligent closed cooling tower in embodiment 1 of the present application.
Fig. 3 is a plan view of the air intake louver in embodiment 1 of the present application.
FIG. 4 is a side view of a heat exchange tube of example 1 of the present application.
FIG. 5 is a plan view of a heat exchange tube of example 1 of the present application.
Description of reference numerals:
1. a tower body; 2. a heat-dissipating coil pipe; 21. a heat exchange tube; 22. a liquid inlet pipe; 23. a liquid outlet pipe; 24. bending the section; 3. a shower pipe; 31. a water accumulation plate; 32. a spray pump; 33. a spray head; 4. a fan; 5. a filler; 6. air inlet shutter; 61. a blade; 62. a rotating shaft; 63. a drive sprocket; 64. a drive chain belt; 65. a drive member; 7. a temperature sensor outside the tower; 71. a temperature sensor in the tower; 72. and a pipe wall temperature sensor.
Detailed Description
The present application is described in further detail below with reference to figures 1-5.
The temperature of the condensate when entering and leaving the cooling tower is respectively the original temperature and the cooling temperature, generally speaking, a refrigeration system corresponding to the cooling tower is unchanged, and the temperature of the condensate output by the refrigeration system is unchanged because the refrigeration system is unchanged, so the original temperature and the cooling temperature are basically constant values, slight floating can be realized in the actual use process, the temperature of the condensate supplemented into the refrigeration system after the cooling tower is cooled can be a qualified standard value, for the cooling tower of the application, the original temperature of the condensate is basically 37 ℃, and the cooling temperature is less than 32 ℃ and is qualified.
Example 1:
the embodiment 1 of the application discloses intelligence closed cooling tower. As shown in fig. 1 and 2, an intelligent closed cooling tower comprises a tower body 1, wherein the tower body 1 is of a square and hollow three-dimensional structure, a control system, a heat dissipation coil 2, a spraying system, a ventilation system and a filler 5 are arranged inside the tower body 1, and the condensate input into the tower body 1 is cooled.
The ventilation system comprises a fan 4, the bottom of the side wall of the tower body 1 is provided with an air inlet, the air inlet is provided with an air inlet shutter 6, the top of the tower body 1 is provided with an air outlet, and the fan 4 is arranged at the air outlet; starting fan 4, fan 4 drives outside air and gets into tower body 1 from the air intake, and the air is by supreme flow down to finally discharge from the air outlet, take away the heat of tower body 1 inside.
As shown in fig. 2 and 3, the heat dissipation coil 2 includes a plurality of heat exchange tubes 21, a liquid inlet tube 22 and a liquid outlet tube 23, and the heat exchange tubes 21 are provided with a plurality of serpentine extensions, so that the path of the condensate flowing in the tower body 1 is extended, the cooling process is extended, and the cooling effect is improved; feed liquor pipe 22 communicates in many heat exchange tubes 21's entrance, drain pipe 23 communicates in many heat exchange tubes 21's exit, feed liquor pipe 22 is provided with the water inlet, drain pipe 23 is provided with the delivery port, the condensate gets into feed liquor pipe 22 through the water inlet, then gets into heat exchange tubes 21, get into drain pipe 23 after the cooling, discharge through the delivery port at last, the setting of feed liquor pipe 22 and drain pipe 23 makes the condensate can be through many heat exchange tubes 21's cooling simultaneously, raises the efficiency.
As shown in fig. 2 and 4, a bent section 24 extending in a bent manner is integrally formed in the middle of the heat exchange tube 21, and the middle is a position starting from the inlet of the heat exchange tube 21 and ending at the outlet of the heat exchange tube 21 and located at a position half of the total extension length of the heat exchange tube 21; specifically, the inside confession condensate that bends 24 flows, and per two are a set of between many heat exchange tubes 21, and the same group of the bend 24 of heat exchange tube 21 is close to each other and the outer wall is laminated fixedly each other, plays the effect of mutual support to same group of heat exchange tube 21, improves heat dissipation coil 2's overall stability.
As shown in fig. 2, the spraying system includes a spraying pipe 3, a water accumulation plate 31 and a spraying pump 32, the spraying pipe 3 is located above the heat dissipation coil 2 and below the fan 4, the spraying pipe 3 is communicated with a plurality of nozzles 33, and the nozzles 33 are basket nozzles 33; the heat exchange tube 21 is sprayed by the spray head 33 after the spray tube 3 is filled with water, and the heat of the heat exchange tube 21 is taken away by the spray water, so that the spray water exchanges heat with the condensate in the heat exchange tube 21, and the function of cooling the condensate is achieved.
The packing 5 is positioned below the heat exchange tube 21, the water accumulation disc 31 is positioned below the packing 5, spray water takes away heat of the heat exchange tube 21 and flows into the packing 5, water flows in the packing 5 and is matched with flowing air to realize heat dissipation, and water in the packing 5 flows into the water accumulation disc 31; the spray pump 32 is communicated between the water accumulation disc 31 and the spray pipe 3, the spray pump 32 pumps the water in the water accumulation disc 31 back to the spray pipe 3 again, the water is recycled, and the temperature of the cooled water is reduced and the cooled water can be reused for spraying.
As shown in fig. 5, the air inlet louver 6 includes a blade 61, a rotating shaft 62, a driving sprocket 63, a driving chain belt 64 and a driving member 65, wherein the blade 61 is arranged in a strip shape, the blade 61 is provided with a plurality of blades and distributed along the height direction of the air inlet, the rotating shaft 62 is fixedly installed at two ends of the blade 61 along the length direction, the rotating shaft 62 is penetrated and rotatably connected to the side wall of the air inlet, the tower body 1 is located inside the side wall of the air inlet and is provided with an accommodating cavity, the driving sprocket 63 is fixed on the rotating shaft 62 at one end of the blade 61, the driving sprocket 63 is located in the accommodating cavity, the driving chain belt 64 is sleeved with the driving sprockets 63 of the plurality of blades 61, the driving chain belt 64 is engaged with the driving sprocket 63, the driving member 65 is fixedly installed in the accommodating cavity, the driving member 65 is specifically a servo motor, and the output end of the servo motor is fixedly connected with one of the driving sprockets 63; starting servo motor, drive driving sprocket 63 rotates to drive all the other driving sprocket 63 through drive chain belt 64 and rotate, realize the rotation of blade 61, thereby adjust the blade 61 inclination of air inlet tripe 6, the inclination that this application mentioned means when blade 61 is close to the inside one side downward sloping of tower body 1, the contained angle of blade 61 side and vertical face, the air inlet area of air intake can be adjusted to regulation blade 61 inclination.
As shown in fig. 2 and 4, the control system includes an outside-tower temperature sensor 7, an inside-tower temperature sensor 71, a pipe wall temperature sensor 72 and a controller, the outside-tower temperature sensor 7 is installed on an outer side wall of the tower body 1, the outside-tower temperature sensor 7 is used for acquiring a temperature of an environment outside the tower body 1, the inside-tower temperature sensor 71 is installed on an inner side wall of the tower body 1, the inside-tower temperature sensor 71 is used for acquiring a temperature of air inside the tower body 1, the pipe wall temperature sensor 72 is installed on a side wall of the heat exchange pipe 21, the pipe wall temperature sensor 72 is used for acquiring a temperature of a side wall of the heat exchange pipe 21, the outside-tower temperature sensor 7, the inside-tower temperature sensor 71 and the pipe wall temperature sensor 72 are all electrically connected with the controller, the controller is electrically connected with the fan 4, the controller is used for controlling a power of the fan 4, the controller is electrically connected with the spray pump 32, the controller is used for controlling a power of the spray pump 32, the controller is electrically connected with the servo motor, and the controller is used for controlling an operation of the servo motor.
Specifically, pipe wall temperature sensor 72 acquires the temperature of the junction of the outer walls of two bending sections 24, the setting of bending sections 24 makes the condensate phase of two heat exchange pipes 21 close, the heat of the condensate in adjacent heat exchange pipes 21 can be mutually transferred, the temperature of the outer wall temperature of bending sections 24 can more accurately reflect the temperature in the middle of heat exchange pipes 21, the middle outer wall of heat exchange pipes 21 is taken as a better reference point, the temperature information of the condensate can be fed back, the power of fan 4 and spray pump 32 is controlled, and the effect on energy conservation and cooling is better.
The embodiment 1 of the application also discloses a control method of the intelligent closed cooling tower.
The method comprises the steps that an external temperature sensor 7 obtains the external environment temperature of a tower body 1, when the external environment temperature of the tower body 1 is larger than a preset value a, a controller instructs a fan 4 to operate according to 95% -100% of rated power, the fan 4 operates according to 100% of the rated power in the embodiment, the controller instructs a spray pump 32 to operate according to 95% -100% of the rated power, the spray pump 32 operates according to 100% of the rated power in the embodiment, the controller instructs a servo motor to adjust the inclination angle of a blade 61 to 30-35 degrees, and the inclination angle of the blade 61 is 30 degrees in the embodiment; the preset value a is 30-32 deg.C, and the preset value a is 32 deg.C in this embodiment.
When the external environment temperature of the tower body 1 is higher than 30-32 ℃, the external environment temperature has less influence on the cooling effect of the condensate in the heat exchange tube 21, so that the condensate is required to be cooled by flowing air and spray water more, the fan 4 and the spray pump 32 are controlled to operate under higher power, higher blowing and spraying strength is provided, the cooling effect is ensured, the air inlet amount can be ensured by the 30-degree inclination angle of the air inlet shutter 6, and the situation that water drifts away from the air inlet is avoided as much as possible.
The closed cooling tower of this embodiment is tested, and the test closed cooling tower is to the cooling effect of condensate, and the test includes the initial temperature and the cooling temperature of condensate, and the ambient temperature is 37.2 ℃ outside the tower body 1 in the test process.
And (3) testing results: the original temperature of the condensate is 37.4 ℃, and the cooling temperature of the condensate is 31.8 ℃, which shows that the cooling tower has good cooling effect on the condensate.
Example 2:
as shown in fig. 2, embodiment 2 of the present application is different from embodiment 1 in that the specific situations of the control method are different, in this embodiment, the outside-tower temperature sensor 7 obtains the outside environment temperature of the tower body 1, the inside-tower temperature sensor 71 obtains the inside temperature of the tower body 1, when the outside environment temperature of the tower body 1 is less than the preset value a and the inside temperature of the tower body 1 is greater than the preset value b, the controller instructs the fan 4 to operate according to 80% -85% of the rated power, in this embodiment, the fan 4 operates according to 80% of the rated power, the controller instructs the spray pump 32 to operate according to 70% -80% of the rated power, in this embodiment, the controller instructs the servo motor to adjust the inclination angle of the blade 61 to 30-40 °, and in this embodiment, the inclination angle of the blade 61 is specifically 30 °; the preset value a is 30-32 ℃, the preset value b is 12-15 ℃, the preset value a is specifically 32 ℃ in the embodiment, and the preset value b is specifically 12 ℃.
When the external environment temperature of the tower body 1 is reduced to be lower than 30-32 ℃, the internal temperature of the tower body 1 is generally reduced along with the influence of the external environment temperature of the tower body 1, but because the difference of the internal and external environment conditions of the tower body 1 is large, the external environment temperature of the tower body 1 cannot rapidly influence and change the internal temperature of the tower body 1, the internal temperature of the tower body 1 needs to be obtained besides the external environment temperature of the tower body 1, the blowing and spraying strength in the tower body 1 is reduced, the power of the fan 4 and the spraying pump 32 can be reduced, and the energy consumption is saved.
The closed cooling tower of this embodiment is tested, and the test closed cooling tower is to the cooling effect of condensate, and the test includes the initial temperature and the cooling temperature of condensate, and the ambient temperature is 24.0 ℃ outside tower body 1 among the test process, and the temperature is 18.6 ℃ in the tower body 1.
And (3) testing results: the original temperature of the condensate is 37.1 ℃, the cooling temperature of the condensate is 31.6 ℃, which shows that the cooling tower has good cooling effect on the condensate, and the running power of the fan 4 and the spray pump 32 is low, and the energy consumption is low.
Example 3:
as shown in fig. 2, a difference between embodiment 3 of the present application and embodiment 1 lies in that a specific situation of the control method is different, in this embodiment, an external temperature sensor 7 acquires an external environment temperature of the tower body 1, an internal temperature sensor 71 acquires an internal temperature of the tower body 1, and a pipe wall temperature sensor 72 acquires an external wall temperature of the heat exchange pipe 21, when the external environment temperature of the tower body 1 is less than a preset value a, the internal temperature of the tower body 1 is less than a preset value b, and a difference between the external wall temperature of the heat exchange pipe 21 and the internal temperature of the tower body 1 is less than a preset value c, a controller instructs a fan 4 to operate according to 50% -60% of a rated power, the controller instructs a spray pump 32 to operate according to 40% -50% of the rated power, in this embodiment, the spray pump 32 operates according to 40% of the rated power, the controller instructs a servo motor to adjust an inclination angle of the blade 61 to 50-60 °, and in this embodiment, the inclination angle of the blade 61 is specifically 60 °; the preset value a is 30-32 deg.C, the preset value b is 12-15 deg.C, the preset value c is 30-33 deg.C, the preset value a is 32 deg.C, the preset value b is 12 deg.C, and the preset value c is 33 deg.C.
When the temperature in the tower body 1 is reduced to be lower than 12-15 ℃, the condensate in the heat exchange tube 21 can be well cooled only by the temperature in the tower body 1, so that the dependence of the cooling process of the condensate on blowing and spraying is reduced, the power of the fan 4 and the spraying pump 32 can be further reduced, the energy consumption is saved, the inclination angle of the blades 61 is increased in a matching manner, the air inlet area is increased, the better ventilation quantity is maintained under the condition that the power of the fan 4 is reduced, the cooling effect is improved, the acting force of spraying water drifting outwards is small at the moment, and the condition of increasing the air inlet area is met.
The closed cooling tower of this embodiment is tested, and the test closed cooling tower is to the cooling effect of condensate, and the test includes the original temperature and the cooling temperature of condensate, and the ambient temperature is 13.5 ℃ outside the tower body 1 among the test process, and the temperature is 6.3 ℃ in the tower body 1, and the outer wall temperature of heat exchange tube 21 is 30.2 ℃.
And (3) testing results: the original temperature of the condensate is 37.3 ℃, and the cooling temperature of the condensate is 31.9 ℃, which shows that the cooling tower has good cooling effect on the condensate, and the fan 4 and the spray pump 32 have low operation power and low energy consumption.
Example 4:
as shown in fig. 2, the difference between the embodiment 4 of the present application and the embodiment 1 lies in the specific situation of the control method being different, in this embodiment, the temperature sensor 7 outside the tower acquires the ambient temperature outside the tower 1, the temperature sensor 71 inside the tower acquires the temperature inside the tower 1, the temperature sensor 72 on the tube wall acquires the temperature of the outer wall of the heat exchange tube 21, when the ambient temperature outside the tower 1 is less than the preset value a, the temperature inside the tower 1 is less than the preset value b, and the difference between the temperature of the outer wall of the heat exchange tube 21 and the temperature inside the tower 1 is greater than the preset value c, the controller instructs to turn off the blower 4, the controller instructs to turn off the spray pump 32, and the controller instructs the servo motor to adjust the inclination angle of the blade 61 to 80-90 degrees, in this embodiment, the inclination angle of the blade 61 is specifically 90 degrees; the preset value a is 30-32 ℃, the preset value b is 12-15 ℃, the preset value c is 30-33 ℃, the preset value a is specifically 32 ℃, the preset value b is specifically 12 ℃, and the preset value c is specifically 33 ℃ in the embodiment.
The temperature of the outer wall of the heat exchange tube 21 can not directly reflect the temperature of the condensate, the temperature of the outer wall of the heat exchange tube 21 is used as a parameter reference, and the influence degree of the internal environment of the tower body 1 on the temperature of the condensate is judged by combining the internal temperature of the tower body 1, so that when the internal temperature of the tower body 1 is reduced to be lower than 12-15 ℃, and the difference between the external temperature of the outer wall of the heat exchange tube 21 and the internal temperature of the tower body 1 is greater than 30-33 ℃, the effect of the internal temperature of the tower body 1 on cooling the condensate can be more obvious, the dependence on blowing and spraying in the cooling process of the condensate is further reduced, the fan 4 and the spraying pump 32 can be closed, the energy consumption is saved, and the air inlet shutter 6 does not need to block the spraying water any more, so that the air inlet area can be further increased, better natural air circulation can be maintained, and the cooling effect is improved.
The closed cooling tower of the embodiment is tested, the cooling effect of the closed cooling tower on the condensate is tested, the test comprises the original temperature and the cooling temperature of the condensate, the temperature of the environment outside the tower body 1 is-3.5 ℃, the temperature inside the tower body 1 is-8.6 ℃, and the temperature of the outer wall of the heat exchange tube 21 is 29.5 ℃ in the test process.
And (3) testing results: the original temperature of the condensate is 36.9 ℃, and the cooling temperature of the condensate is 31.8 ℃, which shows that the cooling tower has good cooling effect on the condensate, and the fan 4 and the spray pump 32 do not need to be operated, so that the energy consumption is low.
The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: equivalent changes in structure, shape and principle of the present application shall be covered by the protection scope of the present application.
Claims (4)
1. The utility model provides an intelligence closed cooling tower, includes tower body (1), its characterized in that: the cooling tower is characterized in that a control system, a heat dissipation coil (2) for flowing of condensate, a spraying system for spraying and cooling the heat dissipation coil (2), a ventilation system for introducing external air and a filler (5) for cooling spray water are arranged in the tower body (1), the control system comprises an outside-tower temperature sensor (7) for obtaining the ambient temperature outside the tower body (1), an inside-tower temperature sensor (71) for obtaining the inside temperature of the tower body (1), a pipe wall temperature sensor (72) for obtaining the side wall temperature of the heat dissipation coil (2) and a controller for controlling the operating power of the spraying system and the ventilation system;
the tower body (1) is provided with an air inlet and an air outlet, the ventilation system comprises a fan (4) arranged at the air outlet, and the controller is electrically connected with the fan (4);
the heat dissipation coil pipe (2) comprises a plurality of snakelike extending heat exchange pipes (21), a liquid inlet pipe (22) communicated with inlets of the plurality of heat exchange pipes (21) and a liquid outlet pipe (23) communicated with outlets of the plurality of heat exchange pipes (21), bending and extending bending sections (24) are arranged in the middle of each heat exchange pipe (21), the outer walls of the bending sections (24) of every two adjacent heat exchange pipes (21) are mutually attached, and a pipe wall temperature sensor (72) acquires the temperature of the joint of the outer walls of the two bending sections (24);
the spraying system comprises a spraying pipe (3) arranged above the heat dissipation coil pipe (2), a water accumulation disc (31) arranged below the filler (5) and a spraying pump (32) communicated with the spraying pipe (3) and the water accumulation disc (31);
a control method of an intelligent closed cooling tower comprises the following steps:
acquiring the ambient temperature outside the tower body (1), the internal temperature inside the tower body (1) and the temperature of the side wall of the heat dissipation coil pipe (2);
the controller adjusts the operating power of the spraying system and the ventilation system according to the ambient temperature outside the tower body (1), the temperature inside the tower body (1) and the temperature of the side wall of the heat dissipation coil (2);
the method for the controller to adjust the operating power of the spraying system and the ventilation system comprises the following steps:
when the ambient temperature outside the tower body (1) is greater than a preset value a, the controller instructs the fan (4) to operate according to 95% -100% of rated power, and the controller instructs the spray pump (32) to operate according to 95% -100% of rated power;
when the ambient temperature outside the tower body (1) is less than a preset value a and the temperature inside the tower body (1) is greater than a preset value b, the controller instructs the fan (4) to operate according to 80-85% of rated power, and the controller instructs the spray pump (32) to operate according to 70-80% of rated power;
when the temperature of the environment outside the tower body (1) is less than a preset value a, the temperature in the tower body (1) is less than a preset value b, and the difference between the temperature of the outer wall of the heat exchange tube (21) and the temperature in the tower body (1) is less than a preset value c, the controller instructs the fan (4) to operate according to 50% -60% of rated power, and the controller instructs the spray pump (32) to operate according to 40% -50% of the rated power;
when the external environment temperature of the tower body (1) is less than a preset value a, the internal temperature of the tower body (1) is less than a preset value b, and the difference between the external wall temperature of the heat exchange tube (21) and the internal temperature of the tower body (1) is greater than a preset value c, the controller instructs the fan (4) to be closed, and the controller instructs the spray pump (32) to be closed;
the preset value a is 30-32 ℃, the preset value b is 12-15 ℃, and the preset value c is 30-33 ℃.
2. The intelligent closed cooling tower of claim 1, wherein: the air inlet shutter (6) is installed at the air inlet, and the controller is further used for controlling the inclination angle of the blades (61) of the air inlet shutter (6).
3. The intelligent closed cooling tower of claim 2, wherein: air inlet tripe (6) still including connect in blade (61) both ends and rotate connect in axis of rotation (62), connect in the drive sprocket (63) of axis of rotation (62), engage in drive chain belt (64) of drive sprocket (63) and be used for the drive sprocket (63) pivoted driving piece (65), the controller is used for control driving piece (65) function.
4. An intelligent closed cooling tower as claimed in claim 3, wherein:
the method for the controller to regulate the operating power of the spraying system and the ventilation system further comprises the following steps:
when the ambient temperature outside the tower body (1) is greater than a preset value a, the controller instructs the driving piece (65) to adjust the inclination angle of the blade (61) to 30-40 degrees;
when the ambient temperature outside the tower body (1) is less than a preset value a and the temperature inside the tower body (1) is greater than a preset value b, the controller instructs the driving piece (65) to adjust the inclination angle of the blade (61) to 30-40 degrees;
when the environment temperature outside the tower body (1) is less than a preset value a, the temperature inside the tower body (1) is less than a preset value b, and the difference between the temperature of the outer wall of the heat exchange tube (21) and the temperature inside the tower body (1) is less than a preset value c, the controller instructs the driving part (65) to adjust the inclination angle of the blades (61) to 50-60 degrees;
when the environment temperature outside the tower body (1) is smaller than a preset value a, the temperature inside the tower body (1) is smaller than a preset value b, and the difference between the temperature of the outer wall of the heat exchange tube (21) and the temperature inside the tower body (1) is larger than a preset value c, the controller instructs the driving piece (65) to adjust the inclination angle of the blade (61) to 80-90 degrees.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN201327308Y (en) * | 2008-10-15 | 2009-10-14 | 上海汽车资产经营有限公司 | Closed-type multi-source double-effect energy tower |
| CN103776276A (en) * | 2013-07-03 | 2014-05-07 | 烟台荏原空调设备有限公司 | Counter-flow closed-type cooling tower |
| CN205718544U (en) * | 2016-04-21 | 2016-11-23 | 无锡宇诺冷却设备制造有限公司 | Cooling tower device |
| CN109945736A (en) * | 2019-03-20 | 2019-06-28 | 江苏华塔冷却技术有限公司 | A kind of cooling tower of band intelligence induced draught system |
| CN215177057U (en) * | 2021-04-09 | 2021-12-14 | 上海三益建筑设计有限公司 | Closed cooling tower |
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2022
- 2022-01-26 CN CN202210096559.3A patent/CN114485209B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201327308Y (en) * | 2008-10-15 | 2009-10-14 | 上海汽车资产经营有限公司 | Closed-type multi-source double-effect energy tower |
| CN103776276A (en) * | 2013-07-03 | 2014-05-07 | 烟台荏原空调设备有限公司 | Counter-flow closed-type cooling tower |
| CN205718544U (en) * | 2016-04-21 | 2016-11-23 | 无锡宇诺冷却设备制造有限公司 | Cooling tower device |
| CN109945736A (en) * | 2019-03-20 | 2019-06-28 | 江苏华塔冷却技术有限公司 | A kind of cooling tower of band intelligence induced draught system |
| CN215177057U (en) * | 2021-04-09 | 2021-12-14 | 上海三益建筑设计有限公司 | Closed cooling tower |
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| CN114485209A (en) | 2022-05-13 |
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