CN217737942U - Cooling tower - Google Patents
Cooling tower Download PDFInfo
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- CN217737942U CN217737942U CN202220907907.6U CN202220907907U CN217737942U CN 217737942 U CN217737942 U CN 217737942U CN 202220907907 U CN202220907907 U CN 202220907907U CN 217737942 U CN217737942 U CN 217737942U
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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
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- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
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Abstract
A cooling tower comprises at least two water towers, each of which is provided with at least one fan; one end of the water supply pipe is communicated with the at least two water towers, and the other end of the water supply pipe is communicated with cooling equipment externally connected with the cooling tower; one end of the water return pipe is communicated with the at least two water towers, and the other end of the water return pipe is communicated with the cooling equipment; the water pump is arranged on the water supply pipe and used for supplying water output by the water tower to the cooling equipment, and the water pump is arranged on the water return pipe and used for returning return water output by the cooling equipment to the water tower, wherein the temperature of the return water is higher than that of the outlet water; one end of the bypass valve is connected with the water supply pipe, and the other end of the bypass valve is connected with the water return pipe; at least two water towers are arranged in sequence in a mode of sharing a water supply pipe, a water return pipe and a water pump, the cooling tower adjusts the running state of at least one fan according to the water outlet temperature of the water supply pipe, and adjusts the state of the bypass valve according to the water return temperature of the water return pipe. The energy consumption of the cooling tower can be reduced, the energy efficiency is improved, energy conservation and environmental protection are facilitated, and the carbon neutralization and carbon peak reaching concepts are met.
Description
Technical Field
The application relates to the technical field of water cooling, in particular to a cooling tower.
Background
The cooling tower is widely applied to industrial production and daily life as an energy conversion device and is used for supplying cooling water to cooling equipment such as an ice maker. The cooling tower generally removes heat by evaporation using contact between water and air, thereby lowering the temperature of water by latent heat exchange, and when the air in contact with water vapor is saturated, water molecules are not evaporated and are in a dynamic equilibrium state. At this time, the number of water molecules evaporated out is equal to the number of water molecules returned from the air into the water, and the water temperature is kept constant. Because current cooling tower can't maintain leaving water temperature at the temperature that can just satisfy the cooling demand, probably lead to leaving water temperature too high or cross lowly, if leaving water temperature is too high, then can't satisfy the cooling demand, if leaving water temperature is crossed lowly, cause the energy waste easily.
SUMMERY OF THE UTILITY MODEL
In view of the above, a cooling tower is needed to solve the above technical problem that the temperature of the outlet water cannot be maintained at a temperature that can just meet the cooling requirement, so that the cooling requirement cannot be met or the energy is wasted.
The present application provides a cooling tower comprising:
each water tower is provided with at least one fan;
one end of the water supply pipe is communicated with the at least two water towers, and the other end of the water supply pipe is communicated with cooling equipment externally connected with the cooling tower;
one end of the water return pipe is communicated with the at least two water towers, and the other end of the water return pipe is communicated with the cooling equipment;
the water pump is arranged on the water supply pipe and used for supplying outlet water output by the water towers to the cooling equipment through the water supply pipe, the other water pump is arranged on the water return pipe and used for returning return water output by the cooling equipment to the at least two water towers through the water return pipe, and the temperature of the return water is higher than that of the outlet water;
one end of the bypass valve is connected to the water supply pipe, and the other end of the bypass valve is connected to the water return pipe;
the at least two water towers are sequentially arranged in a mode of sharing the water supply pipe, the water return pipe and the two water pumps, the cooling tower adjusts the running state of the at least one fan according to the water outlet temperature of the water supply pipe, and adjusts the state of the bypass valve according to the water return temperature of the water return pipe.
Optionally, the number of the cooling towers is at least two, and the at least two cooling towers are sequentially arranged in a manner of sharing the water supply pipe, the water return pipe and the two water pumps.
Optionally, the bypass valve is a normally closed bypass valve, and the closed state is changed into the connected state when the return water temperature is lower than a preset temperature.
Optionally, the number of the cooling towers is at least two, at least two water towers sequentially arranged in one cooling tower are connected in parallel with at least two water towers sequentially arranged in another cooling tower, the one cooling tower and the another cooling tower share a water supply main pipe and are respectively communicated with two water supply pipes through the water supply main pipe, the two water supply pipes are used for respectively supplying water to the two cooling devices, one end of each of the two water return pipes is communicated with a water return main pipe, and the other end of each of the two water return pipes is respectively communicated with the two cooling devices so as to respectively supply the water return of the two cooling devices to the one cooling tower and the another cooling tower through the water return main pipe.
Optionally, the fan of each water tower is a fixed frequency fan.
Optionally, the fan of each water tower is a combination of a fixed frequency fan and a variable frequency fan.
Optionally, the cooling tower further comprises:
the water replenishing device is connected with the at least two water towers and is used for replenishing water for the at least two water towers;
and one end of the water replenishing pipe is communicated with the water replenishing device, and the other end of the water replenishing pipe is communicated with the at least two water towers.
Optionally, the cooling tower further comprises:
and the water quality detection device is connected with the at least two water towers and is used for detecting the water quality of the water in the at least two water towers.
Optionally, the cooling tower further comprises:
the dosing device, dosing device's one end connect in water quality testing device, dosing device's the other end communicate in the moisturizing pipe, dosing device is used for when the quality of water of at least two water towers normal water is unqualified the warp add water treatment agent to through the moisturizing pipe to at least two water towers.
Optionally, the cooling tower further comprises:
the one end of blow off pipe communicate in two at least water towers, the blow off pipe is equipped with the solenoid valve, the blow off pipe is in open when the quality of water of two at least water tower normal water is unqualified the solenoid valve to the impurity in the discharge water, until close when the quality of water of two at least water tower normal water is qualified the solenoid valve.
The application provides a cooling tower can be based on the running state of leaving water temperature regulation fan to adjust leaving water temperature, maintain near target temperature with leaving water temperature, when satisfying the cooling demand, reduce the energy consumption, improve the efficiency, be favorable to energy-concerving and environment-protective, accord with carbon neutralization, carbon reaches the peak theory.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, it is obvious that the drawings in the following description are only embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
FIG. 1 is a schematic diagram of an application environment of a cooling tower according to a preferred embodiment of the present application.
Fig. 2 is a schematic structural diagram of a cooling tower according to an embodiment of the present application.
Fig. 3 is a schematic structural diagram of a cooling tower according to another embodiment of the present application.
Fig. 4 is a schematic structural diagram of a cooling tower according to another embodiment of the present application.
Fig. 5 is a schematic structural diagram of a cooling tower according to another embodiment of the present application.
Description of the main elements
Wet bulb temperature transmitter 111
Main water supply pipe 112
Return main 113
Return pipe 13
Water circulation adjusting pipeline 15
Water quality detecting device 16
Water replenishing device 18
Blow-off pipe 19
The following detailed description will further illustrate the present application in conjunction with the above-described figures.
Detailed Description
In order that the above objects, features and advantages of the present application may be more clearly understood, a detailed description of the present application is given below in conjunction with the accompanying drawings and specific embodiments. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.
In the following description, numerous specific details are set forth to provide a thorough understanding of the present application, and the described embodiments are merely a subset of the embodiments of the present application and are not all embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments in the present application without making any creative effort belong to the protection scope of the present application.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in the description of the present application herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application.
Fig. 1 is a schematic view of an application environment of a cooling tower according to a preferred embodiment of the present application.
The cooling tower 10 includes, but is not limited to, at least two water towers 11, a water supply pipe 12, a water return pipe 13, two water pumps 141, 142, and a bypass valve 150.
In one embodiment, at least one fan 110 is provided on each water tower 11. At least one fan 110 is provided on each water tower 11. The fan 110 is used to cool the water in the water tower 11.
One end of the water supply pipe 12 is communicated with the at least two water towers 11, and the other end of the water supply pipe 12 is communicated with the external cooling device 2 of the cooling tower 10.
One end of the water return pipe 13 is communicated with the at least two water towers 11, and the other end of the water return pipe 13 is communicated with the cooling device 2. In one embodiment, the temperature reducing device 2 may be an ice maker, a compressor, or the like.
The water pump 141 is provided in the water supply pipe 12, and the water pump 142 is provided in the return pipe 13. Preferably, the water pumps 141, 142 are fixed frequency water pumps. The water pump 141 is used for supplying the outlet water output by the water tower 11 to the temperature reduction device 2 through the water supply pipe 12, and the outlet water absorbs the heat of the frozen water in the temperature reduction device 2, and then the outlet water returns the return water to the water tower 11 through the water return pipe 13 by the water pump 142 for cooling, and then the return water is sent to the temperature reduction device 2 for recycling. And the temperature of the return water is greater than that of the outlet water.
One end of the bypass valve 150 is connected to the water supply pipe 12, and the other end of the bypass valve 150 is connected to the return pipe 13.
In one embodiment, at least two water towers 11 are arranged in sequence by sharing the water supply pipe 12, the water return pipe 13 and the water pumps 141 and 142.
The cooling tower 10 adjusts the operation state of at least one fan 110 according to the outlet water temperature of the water supply pipe 12, and adjusts the state of the bypass valve 150 according to the return water temperature of the return pipe 13.
In one embodiment, the cooling tower 10 is further provided with a wet bulb temperature transmitter 111 for detecting the ambient wet bulb temperature of the cooling tower 10. The wet bulb temperature is the lowest temperature that the current environment can reach by evaporating only moisture.
In one embodiment, the water supply pipe 12 is provided with a first temperature transmitter 120 for detecting the temperature of the outlet water of the cooling tower 10. The return pipe 13 is provided with a second temperature transmitter 130 for detecting the return temperature of the return pipe 13.
Fig. 2 is a schematic structural diagram of a cooling tower according to an embodiment of the present disclosure. At least two water towers 11 of the cooling tower 10 are sequentially arranged in a way of sharing a water supply pipe 12, a water return pipe 13 and water pumps 141 and 142, and the cooling tower 10 is connected with a cooling device 2. The fan 110 cools the water in the water tower 11, the water is conveyed to the cooling device 2 through the water pump 141, the water flows through the cooling device 2, the water outlet temperature of the water tower 11 is lower than the temperature of the chilled water in the cooling device 2, the heat of the chilled water can be absorbed, the heat of the chilled water in the cooling device 2 is absorbed, and the return water is returned to the water tower 11 through the water pump 142 to be cooled, so that circulation is formed.
In one embodiment, the cooling tower 10 adjusts the operation state of at least one fan 110 according to the outlet water temperature of the water supply pipe 12. The operating state of the fan 110 includes at least one of on, variable frequency, and off.
In one embodiment, the cooling tower 10 controls the operation state of the at least one fan 110 according to the difference between the outlet water temperature and the target temperature. Optionally, the target temperature is the sum of the ambient wet bulb temperature and a preset temperature, the preset temperature being 3 ℃. The target temperature is +3 ℃ of the environmental wet bulb temperature, is the temperature determined according to experience, cannot meet the cooling requirement due to overhigh temperature, and cannot cause energy waste due to overlow temperature.
As shown in fig. 2, in the first embodiment of the cooling tower, the at least two water towers 11 have the same structure, and the fans 110 of the at least two water towers 11 are all constant frequency fans, and the at least two water towers 11 in the cooling tower 10 are arranged in sequence and share the water supply pipe 12, the water return pipe 13 and the water pumps 141 and 142.
In the first embodiment of the cooling tower, if the difference between the effluent temperature and the target temperature is greater than 0 and the absolute value of the difference is greater than the predetermined value, the cooling tower 10 turns on the fans 110 of the at least two water towers 11 as needed in the first order until the absolute value of the difference between the effluent temperature and the target temperature is less than or equal to the predetermined value. The first sequence is from right to left as shown in fig. 2, that is, the sequence of the distance from the temperature reducing device 2 from near to far, and the sequence is set to at least reduce unnecessary transmission loss, which refers to loss occurring during the transmission process from the outlet water of the water tower 11 to the temperature reducing device 2, for example, the outlet water of the water tower 11 is subjected to heat exchange with the outside in the water supply pipe 12 to increase or lose the temperature, and the longer the water supply pipe 12 is, the larger the loss is generally. Based on the first order, the target temperature for the first water column 11 (the right water column 11 in fig. 2) is ambient wet bulb temperature +3 deg.c and the target temperature for the second water column 11 (the left water column 11 in fig. 2) is ambient wet bulb temperature +3.5 deg.c. It should be noted that, after the first water tower is started, the adjustment of the outlet water temperature needs a certain delay time to be stable, the target temperature of the second water tower is set to be +3.5 ℃ of the environmental wet bulb temperature, which is slightly higher than the target temperature of the first water tower, and the fans 110 of the at least two water towers 11 are started according to the first sequence, so that the delay caused by the same target temperature of the two water towers can be avoided, further the cooling tower system oscillation caused by frequent starting and closing of the water towers can be avoided, and meanwhile, the target temperature is set to be higher, the requirements on the number or frequency of the fans are lower, and the energy-saving effect can be achieved.
Here, "as needed" means that the operation state of the fan 110 is controlled with the absolute value of the difference between the outlet water temperature and the target temperature being less than or equal to a preset value as a control target. If this control target is not reached, an action of controlling the operation state of the fan 110 is executed, i.e., there is such a control need; if this control target is reached, the action of controlling the operating state of the fan 110 is no longer performed, i.e. there is no such control need. The same applies hereinafter.
It should be noted that, if the difference between the outlet water temperature and the target temperature is greater than 0 and the absolute value is greater than the preset value, it is indicated that the outlet water temperature is greater than the target temperature, and the difference between the outlet water temperature and the target temperature is large, and the cooling requirement of the cooling device 2 cannot be met, so that the water in the water tower is cooled by starting the fixed-frequency fan, so as to reduce the outlet water temperature and meet the cooling requirement of the cooling device 2.
If the difference between the effluent temperature and the target temperature is less than or becomes less than 0 and the absolute value of the difference is greater than the preset value, the cooling tower 10 turns off the fans 110 of the at least two water towers 11 as needed in a second order opposite to the first order until the absolute value of the difference between the effluent temperature and the target temperature is less than or equal to the preset value. The second sequence is a water tower sequence from left to right as shown in fig. 2.
It should be noted that, if the difference between the outlet water temperature and the target temperature is less than 0 and the absolute value is greater than the preset value, it is indicated that the outlet water temperature is less than the target temperature, the difference between the outlet water temperature and the target temperature is large, and the outlet water temperature is too low, so that the cooling effect on the water in the water tower is reduced by turning off the constant-frequency fan, and the energy is saved.
Referring to fig. 3, in a second embodiment of the cooling tower, at least two water towers 11 have the same structure, and the fans 110 of the at least two water towers 11 are a combination of constant frequency fans and variable frequency fans, and at least two water towers 11 in the cooling tower 10 are sequentially arranged and share the water supply pipe 12, the water return pipe 13 and the water pumps 141 and 142.
In a second embodiment of the cooling tower, if the difference between the outlet water temperature and the target temperature is greater than 0 and the absolute value is greater than the predetermined value, the cooling tower 10 starts the variable frequency fan, and the frequency of the variable frequency fan is changed according to the difference between the outlet water temperature and the target temperature.
Specifically, if the difference between the outlet water temperature and the target temperature is greater than 0 and the absolute value is greater than the preset value, the cooling tower 10 starts the variable frequency fan, gradually increases the frequency of the variable frequency fan, and simultaneously determines whether the absolute value of the difference between the outlet water temperature and the target temperature becomes less than or equal to the preset value, stops increasing the frequency of the variable frequency fan if the absolute value of the difference between the outlet water temperature and the target temperature becomes less than or equal to the preset value, and continues to increase the frequency of the variable frequency fan until the upper limit of the frequency is reached if the absolute value of the difference between the outlet water temperature and the target temperature is still greater than the preset value.
If the variable frequency fan reaches the upper frequency limit, the cooling tower 10 starts the fixed frequency fan, and the frequency of the variable frequency fan is changed in cooperation with the fixed frequency fan according to the difference between the outlet water temperature and the target temperature until the absolute value of the difference between the outlet water temperature and the target temperature is less than or equal to the preset value. Wherein, can open one or more according to the demand and decide the fan frequently.
Specifically, if the variable frequency fan reaches the upper frequency limit, the absolute value of the difference between the outlet water temperature and the target temperature is still larger than the preset value, the fixed frequency fan is started, and the frequency of the variable frequency fan is reduced until the absolute value of the difference between the outlet water temperature and the target temperature is smaller than or equal to the preset value.
It should be noted that, if the difference between the outlet water temperature and the target temperature is greater than 0 and the absolute value is greater than the preset value, it is indicated that the outlet water temperature is greater than the target temperature, and the difference between the outlet water temperature and the target temperature is large, and the cooling requirement of the cooling device 2 cannot be met, so that the frequency of the variable frequency fan is preferentially increased, and if the frequency of the variable frequency fan reaches the upper limit, the outlet water temperature is still too high, the fixed frequency fan is turned on, and the frequency of the variable frequency fan is reduced based on the temperature difference between the outlet water temperature and the target temperature, so that energy waste caused by too high frequency of the fan is avoided.
If the difference between the outlet water temperature and the target temperature is less than or becomes less than 0 and the absolute value is greater than the preset value, the cooling tower 10 closes the opened fixed frequency fan, and adjusts the frequency of the variable frequency fan until the absolute value of the difference between the outlet water temperature and the target temperature is less than or equal to the preset value.
Specifically, if the difference between the outlet water temperature and the target temperature is less than 0 and the absolute value is greater than the preset value, the opened fixed-frequency fan is preferentially closed, the frequency of the variable-frequency fan is gradually increased or decreased, meanwhile, whether the absolute value of the difference between the outlet water temperature and the target temperature is smaller than or equal to the preset value or not is judged, and if the absolute value of the difference between the outlet water temperature and the target temperature is smaller than or equal to the preset value, the frequency of the variable-frequency fan is stopped being increased or decreased.
Referring to fig. 4, in a third embodiment of the cooling tower, at least two water towers 11 sequentially arranged in one cooling tower 10 and at least two water towers 11 sequentially arranged in another cooling tower 10 are connected in parallel with each other, one cooling tower 10 and another cooling tower 10 share a water supply main pipe 112 and are respectively communicated with two water supply pipes 12 through the water supply main pipe 112, the two water supply pipes 12 are used for respectively supplying water to two cooling devices 2, one end of each of two water return pipes 13 is communicated with a water return main pipe 113, and the other end of each of the two water return pipes 13 is respectively communicated with two cooling devices 2 for respectively supplying the water return of the two cooling devices 2 to one cooling tower 10 and another cooling tower 10 through the water return main pipe 113.
In a third embodiment of the cooling tower, the configurations of at least two water towers 11 in two cooling towers 10 are the same, and the fans 110 of at least two water towers 11 are a combination of a fixed frequency fan and a variable frequency fan, the two cooling towers 10 control the operating states of the fans 110 of the respective water towers 11 based on the difference between the outlet water temperature of the water supply pipe 12 and the target temperature, the control logic is to preferentially turn on the fan 110 in the upper cooling tower 10 in fig. 4, and preferentially turn off the fan 110 that is turned on after being turned off, and other control logics are the same as above, and are not described again here.
Referring to fig. 5, in a fourth embodiment of the cooling tower, a plurality of cooling towers 10 are sequentially arranged in a manner of sharing a water supply pipe 12, a water return pipe 13 and water pumps 141, 142, the water pump 141 delivers water to different cooling devices 2 through the water supply pipe 12, and the water pump 142 returns water to two cooling towers 10 through the water return pipe 13.
In one embodiment, the power consumption of the fixed frequency fan is the product of rated power and time. The electricity consumption of the frequency conversion fan is (X/f) max ) 3 Rated power times time. Wherein X is the current frequency of the variable frequency fan, f max Is the maximum frequency of the variable frequency fan. The total power consumption of the cooling tower 10 is the sum of the power consumptions of all the constant frequency fans and the variable frequency fans.
In another embodiment, the power consumption of the fixed-frequency fan is the product of the fan aging coefficient, the rated power and the time. The electricity consumption of the frequency conversion fan is (X/f) max ) 3 And the product of the fan aging coefficient, the rated power and the time. Wherein X is the current frequency of the variable frequency fan, f max Is the maximum frequency of the variable frequency fan. The fan aging factor is a predetermined percentage based on fan conditions, which may include the age and health of the fan.
In other embodiments, the total power consumption of the cooling tower 10 may also be obtained through a plurality of power lines connected to the cooling tower 10. For example, a plurality of power lines connected to the cooling tower 10 are connected through a meter (not shown) to obtain the total power consumption of the cooling tower 10.
In one embodiment, if the difference between the outlet water temperature and the target temperature is greater than 0 and the absolute value is greater than the preset value, the cooling tower 10 controls the number of the frequency-variable fans and the frequency-variable fans to be turned on, and controls the frequency of the frequency-variable fans until the absolute value of the difference between the outlet water temperature and the target temperature is less than or equal to the preset value, and the total power consumption of the cooling tower is minimized.
Specifically, if the difference between the outlet water temperature and the target temperature is greater than 0 and the absolute value is greater than the preset value, the cooling tower 10 analyzes a plurality of combinations of the number of the fixed-frequency fans that can make the absolute value of the difference between the outlet water temperature and the target temperature smaller than or equal to the preset value, the number of the variable-frequency fans that are turned on, and the frequency of the variable-frequency fans, calculates the total power consumption of each combination, determines the combination with the minimum total power consumption, and controls the number of the fixed-frequency fans that are turned on, and the frequency of the variable-frequency fans based on the data in the combination with the minimum total power consumption.
If the difference between the outlet water temperature and the target temperature is less than or becomes less than 0 and the absolute value is greater than the preset value, the cooling tower 10 controls the number of the frequency-variable fans and the frequency-variable fans to be turned on, and controls the frequency of the frequency-variable fans until the absolute value of the difference between the outlet water temperature and the target temperature is less than or equal to the preset value, and the total power consumption of the cooling tower is minimized.
Specifically, if the difference between the outlet water temperature and the target temperature is less than or becomes less than 0 and the absolute value is greater than the preset value, the cooling tower 10 analyzes a plurality of combinations of the number of the fixed-frequency fans to be turned on, the number of the variable-frequency fans to be turned on, and the frequency of the variable-frequency fans, which enable the absolute value of the difference between the outlet water temperature and the target temperature to become less than or equal to the preset value, calculates the total power consumption of each combination, determines the combination with the minimum total power consumption, and controls the number of the fixed-frequency fans to be turned on and the frequency of the variable-frequency fans based on the data in the combination with the minimum total power consumption.
In one embodiment, the cooling tower 10 further includes a water circulation adjusting line 15, and the water circulation adjusting line 15 is disposed between the water supply pipe 12 and the water return pipe 13. The water circulation adjusting line 15 is provided with a bypass valve 150, and one end of the bypass valve 150 is connected to the water supply pipe 12 and the other end is connected to the return pipe 13.
In one embodiment, the bypass valve 150 is a normally closed bypass valve that transitions from a closed state to an open state when the return water temperature is less than a predetermined temperature. In other embodiments, the bypass valve 150 may be a bypass valve with an adjustable opening.
In one embodiment, the cooling tower 10 also adjusts the state of the bypass valve 150 according to the return water temperature of the return pipe 13. The state of the bypass valve 150 includes an on-off state or opening degree.
Specifically, the cooling tower 10 determines whether the return water temperature is less than the cooling tower minimum cooling temperature. If the return water temperature is less than or equal to the lowest cooling temperature of the cooling tower, the cooling tower 10 controls the bypass valve 150 to open or increase the opening of the bypass valve 150. If the return water temperature is higher than the lowest cooling temperature of the cooling tower, the cooling tower 10 controls the bypass valve 150 to close or reduces the opening of the bypass valve 150.
In one embodiment, the cooling tower minimum cooling temperature is the lower limit of the design leaving water temperature range of the cooling tower 10. It should be noted that, if the return water temperature of the cooling tower 10 is less than or equal to the lowest cooling temperature of the cooling tower, it indicates that the return water temperature is low enough, and the cooling tower 10 is not required to cool the return water again. For example, since the temperature in winter is low, the temperature of the return pipe 13 is also low, so that the temperature of the return water flowing through the return pipe 13 is also low. At this time, the bypass valve 150 is controlled to open or increase the opening degree of the bypass valve 150 so that the return water in the return pipe 13 is supplied to the temperature lowering device 2 without returning to the cooling tower 10, but directly enters the water supply pipe 12 through the water circulation adjustment line 15.
In one embodiment, if the return water temperature of the cooling tower 10 is greater than the minimum cooling temperature of the cooling tower, which indicates that the return water temperature is higher, the cooling tower 10 is required to cool the return water. At this time, the bypass valve 150 is controlled to close or reduce the opening degree of the bypass valve 150 so that the return water in the return pipe 13 is returned to the cooling tower 10 without entering the water supply pipe 12 through the water circulation control pipe 15.
In one embodiment, the cooling tower 10 further includes a water quality detection device 16. The water quality detection device 16 is connected with the water tower 11 and is used for detecting the water quality of the water in the water tower 11 and judging whether the water quality is qualified. Optionally, the water quality detection device 16 includes a conductivity meter 161 and a pH meter 162. Conductivity meter 161 is used to detect the conductivity of the water in water tower 11 and pH meter 162 is used to detect the pH of the water in water tower 11. If the conductivity of the water detected by the conductivity meter 161 is greater than the conductivity threshold and/or the pH of the water detected by the pH meter 162 is outside the standard pH range, the water quality detection device 16 determines that the water in the water tower 11 is of a non-acceptable quality. If the conductivity of the water detected by the conductivity meter 161 is less than or equal to the conductivity threshold and/or the pH of the water detected by the pH meter 162 is within the standard pH range, the water quality detection device 16 determines that the water in the water tower 11 is of a qualified quality.
In one embodiment, the cooling tower 10 further comprises a water replenishing device 18 externally connected to the at least two water towers 11 for replenishing the at least two water towers 11 with water.
In one embodiment, the cooling tower 10 further includes a water replenishing pipe 181, one end of the water replenishing pipe 181 is connected to the water replenishing device 18, and the other end is connected to the at least two water towers 11. The water replenishing pipe 181 is provided with a flow meter 182 for detecting the amount of the replenished water.
Optionally, the water replenishing device 18 comprises a water tank and a water pump (not shown), and when the at least two water towers 11 need to be replenished, the water pump (not shown) of the water replenishing device 18 delivers the water stored in the water tank to the at least two water towers 11 via the water replenishing pipe 181.
In an embodiment, the cooling tower 10 further comprises a dosing device 17. One end of the dosing device 17 is connected to the water quality detection device 16, and the other end of the dosing device 17 is communicated with the water replenishing pipe 181. The dosing device 17 is used for adding water treatment agent to the at least two water towers 11, purifying the water in the at least two water towers 11.
In one embodiment, the cooling tower 10 further includes a blowdown pipe 19. One end of the blow-off pipe 19 is communicated with the at least two water towers 11 and is used for discharging impurities in the at least two water towers 11. The sewage draining pipe 19 is provided with an electromagnetic valve 190.
In an embodiment, if the water quality detecting device 16 determines that the water quality of the water in the at least two water towers 11 is not qualified, a chemical adding instruction is sent to the chemical adding device 17, when the water replenishing device 18 replenishes the water in the at least two water towers 11 through the water replenishing pipe 181, the chemical adding device 17 adds the water treatment chemical to the water in the water replenishing pipe 181 based on a preset chemical concentration, the water containing the water treatment chemical is replenished to the at least two water towers 11 through the water replenishing pipe 181, and the water in the water towers 11 can be purified after the water treatment chemical flows into the water towers 11. When the water quality detection device 16 determines that the water quality of the water in the at least two water towers 11 is qualified, the water quality detection device 16 sends a sewage discharge instruction to the electromagnetic valve 190, and the electromagnetic valve 190 is controlled to be opened, so that the sewage discharge pipe 19 discharges impurities in the water.
In one embodiment, during the water replenishing process through the water replenishing pipe 181, the flow meter 182 may detect the amount of the replenished water, and the amount of the water treatment agent added to the water tower 11 may be calculated based on the amount of the replenished water and the concentration of the agent in the replenished water. If the amount of the water treatment agent added to the cooling tower 10 reaches the preset amount, the dosing device 17 stops dosing.
The application provides a cooling tower can be based on the running state of leaving water temperature regulation fan to adjust leaving water temperature, maintain near target temperature with leaving water temperature, when satisfying the cooling demand, reduce the energy consumption, improve the efficiency, do benefit to energy-concerving and environment-protective, accord with carbon neutralization, carbon reaches the peak theory.
It will be evident to those skilled in the art that the present application is not limited to the details of the foregoing illustrative embodiments, and that the present application may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the application being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned. Furthermore, it is obvious that the word "comprising" does not exclude other elements or steps, and the singular does not exclude the plural. Several units or means recited in the apparatus claims may also be embodied by one and the same item or means in software or hardware. The terms first, second, etc. are used to denote names, but not any particular order.
Although the present application has been described in detail with reference to preferred embodiments, it should be understood by those skilled in the art that various changes may be made and equivalents may be substituted for elements thereof without departing from the spirit and scope of the present application.
Claims (10)
1. A cooling tower, comprising:
each water tower is provided with at least one fan;
one end of the water supply pipe is communicated with the at least two water towers, and the other end of the water supply pipe is communicated with cooling equipment externally connected with the cooling tower;
one end of the water return pipe is communicated with the at least two water towers, and the other end of the water return pipe is communicated with the cooling equipment;
the water pump is arranged on the water supply pipe and used for supplying outlet water output by the water towers to cooling equipment through the water supply pipe, the water pump is arranged on the water return pipe and used for returning return water output by the cooling equipment to the at least two water towers through the water return pipe, and the temperature of the return water is higher than that of the outlet water;
one end of the bypass valve is connected with the water supply pipe, and the other end of the bypass valve is connected with the water return pipe;
the at least two water towers are sequentially arranged in a mode of sharing the water supply pipe, the water return pipe and the two water pumps, the cooling tower adjusts the running state of the at least one fan according to the water outlet temperature of the water supply pipe, and adjusts the state of the bypass valve according to the water return temperature of the water return pipe.
2. The cooling tower of claim 1, wherein: the number of the cooling towers is at least two, and the at least two cooling towers are sequentially arranged in a mode of sharing the water supply pipe, the water return pipe and the two water pumps.
3. The cooling tower of claim 1, wherein: the bypass valve is a normally closed bypass valve, and is switched from a closed state to an open state when the return water temperature is lower than a preset temperature.
4. The cooling tower of claim 1, wherein: the cooling tower comprises at least two cooling towers, at least two water towers sequentially arranged in one cooling tower and at least two water towers sequentially arranged in the other cooling tower are mutually connected in parallel, the cooling tower and the other cooling tower share a water supply main pipe and are respectively communicated with two water supply pipes through the water supply main pipe, the two water supply pipes are used for respectively supplying water to two cooling devices, one end of each of the two water return pipes is communicated with a water return main pipe, and the other end of each of the two water return pipes is respectively communicated with the two cooling devices so as to respectively supply the water return of the two cooling devices to the cooling tower and the other cooling tower through the water return main pipe.
5. A cooling tower according to any one of claims 1 to 4 wherein the fan of each water tower is a fixed frequency fan.
6. The cooling tower of any one of claims 1 to 4, wherein the fan of each water tower is a combination of a fixed frequency fan and a variable frequency fan.
7. The cooling tower of claim 1, further comprising:
the water replenishing device is connected with the at least two water towers and is used for replenishing water for the at least two water towers;
and one end of the water replenishing pipe is communicated with the water replenishing device, and the other end of the water replenishing pipe is communicated with the at least two water towers.
8. The cooling tower of claim 7, further comprising:
and the water quality detection device is connected with the at least two water towers and is used for detecting the water quality of the water in the at least two water towers.
9. The cooling tower of claim 8, further comprising:
the dosing device, dosing device's one end connect in water quality testing device, dosing device's the other end communicate in the moisturizing pipe, dosing device is used for when the quality of water of at least two water towers normal water is unqualified the warp add water treatment agent to through the moisturizing pipe to at least two water towers.
10. The cooling tower of claim 8 or 9, further comprising:
the one end of blow off pipe communicate in two at least water towers, the blow off pipe is equipped with the solenoid valve, the blow off pipe is in open when the quality of water of two at least water tower normal water is unqualified the solenoid valve, in order to discharge the impurity in the unqualified aquatic of quality of water closes when the quality of water of two at least water tower normal water is qualified the solenoid valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220907907.6U CN217737942U (en) | 2022-04-19 | 2022-04-19 | Cooling tower |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220907907.6U CN217737942U (en) | 2022-04-19 | 2022-04-19 | Cooling tower |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217737942U true CN217737942U (en) | 2022-11-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220907907.6U Active CN217737942U (en) | 2022-04-19 | 2022-04-19 | Cooling tower |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217737942U (en) |
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2022
- 2022-04-19 CN CN202220907907.6U patent/CN217737942U/en active Active
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