CN218410784U - Energy-saving cooling tower fan electromechanical device - Google Patents
Energy-saving cooling tower fan electromechanical device Download PDFInfo
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- CN218410784U CN218410784U CN202221766235.8U CN202221766235U CN218410784U CN 218410784 U CN218410784 U CN 218410784U CN 202221766235 U CN202221766235 U CN 202221766235U CN 218410784 U CN218410784 U CN 218410784U
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- cooling tower
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- temperature sensor
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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 utility model discloses an energy-saving cooling tower fan electromechanical device, which comprises a cooling tower fan arranged on a cooling tower, wherein a low-speed direct current driving motor is directly connected to the cooling tower fan or is connected to the cooling tower fan through a coupler; a fan of the cooling tower is provided with a rotating speed sensor, a water return pipe of the cooling tower is provided with a first water temperature sensor, and a cooling water tank of the cooling tower or a water outlet main pipe of a circulating water pump unit is provided with a second water temperature sensor; the direct current driving motor, the rotating speed sensor, the first water temperature sensor and the second water temperature sensor are connected to the control module. The utility model has the advantages that the low-speed direct drive motor is directly connected with the cooling tower fan or connected through the shaft coupling, and no other transmission device is arranged, thereby improving the transmission efficiency; according to changes of ambient temperature, heat load and the like, the maximum economic cooling capacity of the current cooling tower system is combined, the operation of a fan of the cooling tower is adjusted in a closed loop mode, and energy is saved and consumption is reduced on the premise that production requirements are met.
Description
Technical Field
The utility model belongs to the technical field of the recirculated cooling water system technique and specifically relates to an energy-saving cooling tower fan electromechanical device is related to.
Background
The circulating cooling water system is widely applied to various fields of national economy production such as steel, nonferrous metals, petroleum, chemical engineering, chemical fertilizers, building materials, electric power and the like, and has the core function of heat exchange, wherein the main energy consumption equipment is a circulating water pump, and the secondary energy consumption equipment is a cooling tower fan.
The traditional cooling tower of the circulating water system is provided with a plurality of cooling tower fans, the fans are generally driven by motors through reduction boxes, the air supply effect of the fans enables water flow entering the cooling tower to be cooled through rapid heat dissipation, and then the water flow returns to a cooling water pool through self weight. However, this system also has the following problems:
1. the reduction gearbox between the fan and the motor has low transmission efficiency and large energy consumption. The reduction gearbox has multiple faults, the maintenance cost is higher, and the safety production is greatly influenced.
2. The adjustment means is extensive. The cooling tower fan is in a starting mode, and is normally fully opened in summer and partially operated in other seasons. Frequency-converter-based speed regulation is basically manual frequency regulation. The cooling tower fan can not be according to the change of ambient temperature and thermal load etc. the running state of automatic adjustment motor, and unit operating efficiency is lower, and the energy waste is great.
3. The wet bulb temperature represents the lowest temperature at which water may be cooled under the prevailing atmospheric conditions, i.e. the limit value for the temperature of the cooling tower outlet water. When the outlet water temperature of the cooling tower is equal to or greater than a certain value of the wet bulb temperature, the outlet water temperature hardly changes even if the air volume continues to increase. The traditional cooling tower fan operation control does not pay attention to the maximum economic cooling capacity of the current cooling tower system, and unnecessary energy waste is caused.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide an energy-saving cooling tower fan electromechanical device, it can improve cooling tower fan operational reliability and reduce the running energy consumption.
In order to solve the above technical problem, an embodiment of the present invention provides an energy-saving cooling tower fan electromechanical device, which includes a cooling tower fan (1) disposed on a cooling tower, and further includes: the low-speed direct current driving motor (3) is directly connected to the cooling tower fan or is connected to the cooling tower fan through a coupler;
a fan of the cooling tower is provided with a rotating speed sensor (2), a water return pipe of the cooling tower is provided with a first water temperature sensor (6), and a cooling water pool of the cooling tower or a water outlet main pipe of a circulating water pump unit is provided with a second water temperature sensor (7);
the direct current driving motor, the rotating speed sensor, the first water temperature sensor and the second water temperature sensor are connected to the control module.
Further, the cooling tower is provided with an outdoor wet bulb temperature sensor (5) which is connected to the control module.
Furthermore, the outdoor wet bulb temperature sensor (5) is arranged on the outer edge of the top platform of the cooling tower.
Further, the control module is arranged on a control cabinet (4), and the control cabinet is arranged on the top of the cooling tower.
Further, the control module is a PLC.
Furthermore, a positioning device is arranged on a butt joint structure of a power output end of the low-speed direct current driving motor and a fan blade shaft of the cooling tower fan. For example, when the two are connected by the flange, the flange is provided with a plurality of positioning protrusions and a plurality of positioning grooves which are matched with each other, or the flange at the power output end of the low-speed direct current driving motor is provided with an annular groove, and the flange of the fan blade shaft of the cooling tower fan is provided with a convex ring. The structure can improve the assembly efficiency and the installation stability.
The utility model discloses following beneficial effect has:
1. the low-speed direct drive motor is directly connected with the cooling tower fan or connected through the coupler, other transmission devices are omitted, and transmission efficiency is improved.
2. According to the changes of the environmental temperature, the heat load and the like, the maximum economic cooling capacity of the current cooling tower system is combined, the operation of a fan of the cooling tower is adjusted in a closed loop mode, and the energy is saved and the consumption is reduced on the premise of meeting the production requirement.
Drawings
Fig. 1 is a schematic structural diagram of an electromechanical device of an energy-saving cooling tower fan.
Detailed Description
In order to make the technical means, creation features, achievement purposes and functions of the present invention easy to understand, the present invention will be further described with reference to the following embodiments.
An embodiment of the utility model provides an energy-saving cooling tower fan electromechanical device, see fig. 1, it includes cooling tower fan 1, speed sensor 2, low-speed direct current drive motor 3, switch board 4, outdoor wet bulb temperature sensor 5, first temperature sensor 6, second temperature sensor 7.
Fig. 1 shows a cooling tower and a cooling tower fan 1 installed on the top of the cooling tower, and the structure of the cooling tower is prior art and will not be described herein. In this embodiment, the low-speed dc driving motor 3 is directly connected to the cooling tower fan or the low-speed dc driving motor is connected to the cooling tower fan through a coupling, for example, the low-speed dc driving motor is directly connected to the cooling tower fan, a complex transmission system between the low-speed dc driving motor and the cooling tower fan may be omitted, and after the low-speed dc driving motor is installed at the top of the cooling tower, the fan blade of the cooling tower fan is vertically assembled through the driving power output end of the vertically configured low-speed dc driving motor, and the flange disc structure may be configured between the power output end of the low-speed dc driving motor and the fan blade shaft of the cooling tower fan to perform interconnection. In order to detect the rotating speed, a rotating speed sensor 2 can be arranged at the shaft extension end of the fan of the cooling tower, and the rotating speed sensor 2 detects the rotating speed of the fan in real time.
It is worth mentioning that, this embodiment satisfies the tower fan operational reliability requirement except that structural design is last, still sets up first temperature sensor 6 at the wet return of cooling tower, and the cooling water pool (or circulating water pump unit play water main pipe department) of cooling tower is provided with second temperature sensor 7, and when the second temperature sensor 7 of cooling water pool was installed in the cooling water pool, can be a plurality of groups, the average temperature of comprehensive measurement.
Besides the monitoring of the data, the cooling tower is provided with an outdoor wet bulb temperature sensor 5, and the outdoor wet bulb temperature sensor 5 is arranged on the outer edge of a tower top platform of the cooling tower.
In this embodiment, there is a control module, which may be disposed in the control cabinet 4 at the top of the cooling tower. Direct current driving motor, speed sensor, first water temperature sensor, second water temperature sensor, outdoor wet bulb temperature sensor 5 connect in control module, and the control unit among the control module includes but not only is limited to PLC, and the control unit can connect human-computer interface and carry out the interaction.
The control cabinet 4 controls the low-speed direct-current drive motor 3 (low-speed direct drive motor) to operate. The parameters of the real-time detection of the rotating speed sensor 2, the outdoor wet bulb temperature sensor 5, the first water temperature sensor 6 of the water return pipe and the second water temperature sensor 7 of the cooling pool are transmitted into the control cabinet 4, the control cabinet 4 automatically controls and operates the cooling tower fan electromechanical device according to the set control principle according to the set parameter variable, the parameters of the real-time detection of the sensors and the like [ the name of the control software used in the patent ]: circulating water energy-saving modification control software V1.0 registration number 2021SR0322662 certificate number: soft literary dendration No. 7044889.
The first control principle is as follows: the return water temperature is used as a control index.
After the running is started, firstly, self-checking is carried out, the fan runs at a rated rotating speed, and the return water temperature is lower than a set value at the moment. And detecting the actual rotating speed of the fan, the water temperature of the backwater, the average water temperature of the cold water pool and the temperature of the outdoor wet bulb in real time. When the return water temperature is lower than a set value, the cooling tower fan is slowly decelerated, and the return water temperature is slowly increased; when the return water temperature is higher than a set value, the cooling tower fan is rapidly accelerated, and the return water temperature is rapidly reduced. Meanwhile, the control system adds 3 ℃ (represented by symbols & the like) to the actual outdoor wet bulb temperature to serve as a setting parameter for controlling the water temperature of the cold water pool, neglects the setting when the water temperature of the cold water pool is higher than & and slowly reduces the speed of the fan of the cooling tower when the water temperature of the cold water pool is lower than & and gives an alarm for reminding. When the fan speed of the cooling tower is reduced to a set protection value (such as 30 r/min), the speed is not reduced any more.
And a second control principle: and taking the average water temperature of the cold water pool as a control index.
After the operation is started, firstly, self-checking is carried out, the fan operates at a rated rotating speed, and at the moment, the water temperature of the cooling water pool is lower than a set value. And detecting the actual rotating speed of the fan, the return water temperature, the average water temperature of the cold water tank and the outdoor wet bulb temperature in real time. When the water temperature of the cooling water pool is lower than a set value, the fan of the cooling tower slowly reduces the speed, and the water temperature of the cooling water pool slowly rises; when the water temperature of the cooling water pool is higher than a set value, the fan of the cooling tower is rapidly accelerated, and the water temperature of the cooling water pool is rapidly reduced. Meanwhile, the control system adds 3 ℃ (represented by symbols &) according to the actual outdoor wet bulb temperature, and is used as another set of setting parameters for controlling the water temperature of the cold water pool. When the rotating speed of the fan of the cooling tower is reduced to a set protection value (such as 30 r/min), the speed is not reduced any more.
It will be understood by those skilled in the art that the foregoing embodiments are specific examples of the invention, and that various changes in form and details may be made therein without departing from the spirit and scope of the invention in its practical application.
Claims (3)
1. The utility model provides an energy-saving cooling tower fan electromechanical device, its is including setting up in the cooling tower fan of cooling tower, its characterized in that still includes: the low-speed direct current driving motor (3) is directly connected to the cooling tower fan or is connected to the cooling tower fan through a coupler;
a fan of the cooling tower is provided with a rotating speed sensor (2), a water return pipe of the cooling tower is provided with a first water temperature sensor (6), and a cooling water pool of the cooling tower or a water outlet main pipe of a circulating water pump unit is provided with a second water temperature sensor (7);
the direct current driving motor, the rotating speed sensor, the first water temperature sensor and the second water temperature sensor are connected to the control module;
the cooling tower is provided with an outdoor wet bulb temperature sensor (5) which is connected to the control module;
the control module is arranged on a control cabinet (4), and the control cabinet is arranged on the top of the cooling tower;
the control module is a PLC.
2. The electromechanical device of the fan of the energy-saving cooling tower of claim 1, wherein the outdoor wet bulb temperature sensor (5) is disposed at the outer edge of the top platform of the cooling tower.
3. The electromechanical device of the fan of the energy-saving cooling tower as claimed in claim 1, wherein a positioning device is disposed in a butt joint structure between the power output end of the low-speed dc driving motor and the fan blade shaft of the fan of the cooling tower.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221766235.8U CN218410784U (en) | 2022-07-08 | 2022-07-08 | Energy-saving cooling tower fan electromechanical device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221766235.8U CN218410784U (en) | 2022-07-08 | 2022-07-08 | Energy-saving cooling tower fan electromechanical device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218410784U true CN218410784U (en) | 2023-01-31 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221766235.8U Active CN218410784U (en) | 2022-07-08 | 2022-07-08 | Energy-saving cooling tower fan electromechanical device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218410784U (en) |
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2022
- 2022-07-08 CN CN202221766235.8U patent/CN218410784U/en active Active
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