CN105351220B - Vertical-shaft wind rotating machine is combined the cooling tower and control method of driving with motor - Google Patents

Abstract

The invention discloses a cooling tower combined with a vertical axis wind turbine and a motor and a control method. The cooling tower includes: a spiral vertical axis wind turbine arranged on the cooling tower body for driving the fan to rotate , the helical vertical axis wind turbine is provided with a helical fan blade for converting wind energy into kinetic energy; a backup motor arranged on the cooling tower body is used to assist in driving the fan to rotate; The intelligent control device connected to the motor is used to control the standby motor to turn on and assist the fan to rotate to the rated speed when the spiral vertical axis wind turbine drives the fan to rotate less than a predetermined number of revolutions. The invention provides an energy-saving cooling device combined with wind power and motor, mainly driven by wind power, which greatly reduces energy consumption and saves a lot of electric energy.

Description

Cooling tower driven by combination of vertical axis wind turbine and motor and control method

technical field

The invention relates to the technical field of energy-saving equipment, in particular to a cooling tower driven by a vertical-axis wind turbine and a motor.

Background technique

In the prior art, a cooling tower is a device that uses the contact between air and water (directly or indirectly) to cool water. It uses water as a circulating coolant to absorb heat from a system and discharge it to the atmosphere, thereby reducing the circulation in the tower. The temperature of the water is used to make the equipment that the cooling water can be recycled. The cooling tower is an important part of the central air-conditioning system and other cooling systems. It is a relatively energy-consuming device, and the internal cooling fan is the main energy-consuming component. Cooling towers can be divided into natural ventilation cooling towers, mechanical ventilation cooling towers, and mixed ventilation cooling towers according to the type of ventilation.

At present, the most widely used in China is the mechanical ventilation cooling tower. The traditional mechanical ventilation cooling tower relies on the electric motor to drive the fan to attract or force the air to fully contact the circulating water, thereby reducing the temperature of the circulating water. According to statistics, the energy consumption of 1m³/h circulating water on the mechanical ventilation cooling tower is 0.07-0.10KW, of which the power consumption of the motor is 0.025-0.060KW, which is nearly half of the energy consumption of the cooling system. Relevant data shows that the annual running hours of the motor of the mechanical ventilation cooling tower is about 8000 hours, then the energy consumption of the motor on the mechanical ventilation cooling tower with 1m³/h of circulating water can reach 200-480KW/h in one year, then a traditional A mechanical ventilation cooling tower motor consumes a lot of electricity for one year of operation. That is, the mechanical ventilation cooling tower in the prior art consumes a lot of electricity and high energy consumption, which is not conducive to energy saving and environmental protection.

Therefore, the prior art still needs to be improved and developed.

Contents of the invention

The technical problem to be solved by the present invention is to provide a cooling tower driven by a combination of a vertical axis wind turbine and a motor, aiming at the above-mentioned defects of the prior art. Provided is an energy-saving cooling device combining wind power and a motor, mainly driven by wind power, which greatly reduces energy consumption and saves a lot of electric energy.

The technical solution adopted by the present invention to solve technical problems is as follows:

A cooling tower driven by a vertical axis wind-driven rotating machine and a motor, comprising: a cooling tower body, a fan arranged in the cooling tower body, wherein it also includes:

A helical vertical-axis wind-powered rotor for driving the fan to rotate on the cooling tower body, the helical vertical-axis wind-powered rotor is provided with a helical blade for converting wind energy into kinetic energy;

A spare motor arranged on the cooling tower body to assist in driving the fan to rotate;

And an intelligent control device connected with the backup motor for controlling the backup motor to turn on to assist in driving the fan to reach the rated speed when the spiral vertical axis wind turbine drives the fan to rotate less than a predetermined number of revolutions.

The cooling tower driven by the combination of the vertical axis wind turbine and the motor, wherein the spiral vertical axis wind turbine also includes: a spiral blade rotating shaft connected to support the spiral wind blade, arranged on the spiral wind blade The spiral fan blade shaft gear at the lower end of the blade shaft.

The cooling tower driven by the combination of the vertical axis wind turbine and the motor, wherein the spiral vertical axis wind turbine further includes: a first one-way bearing, and the helical wind blade rotating shaft gear passes through the first The one-way bearing is installed at the lower end of the rotating shaft of the spiral fan blade.

The cooling tower driven by the combination of the vertical axis wind turbine and the motor, wherein the cooling tower body is provided with a fan bracket for installing the fan, and the fan is installed on the fan frame through a fan shaft , and a fan gear is fixedly installed on the fan shaft, and the fan gear meshes with the helical fan blade shaft gear.

The cooling tower driven by the combination of the vertical-axis wind turbine and the motor, wherein the rotating shaft of the spiral fan blade is provided with a speed measuring instrument for measuring the speed of the spiral vertical-axis wind turbine.

The cooling tower driven by the combination of the vertical axis wind turbine and the motor, wherein it also includes: a motor gear connected to the backup motor and driven by the backup motor, the motor gear is connected to the rotating shaft of the backup motor through the second one-way bearing connected; the gear of the motor meshes with the gear of the fan.

The cooling tower driven by the combination of the vertical axis wind turbine and the motor, wherein the spiral fan blade rotating shaft gear, the fan gear and the motor gear are installed on the same horizontal plane and meshed normally; When the blade drives the rotating shaft gear of the spiral fan blade, the rotating shaft gear of the spiral fan blade drives the fan gear to rotate, and the fan gear drives the motor gear to rotate. Due to the effect of the second one-way bearing, the rotating shaft of the motor is not affected by the torque;

When the motor is working, the rotating shaft of the helical fan blade will not be affected by the torque from the motor.

The cooling tower driven by the combination of the vertical axis wind turbine and the motor, wherein a bracket for supporting and installing the helical vertical axis wind turbine is arranged on the cooling tower body, and the bracket includes a first bracket and a second bracket;

A first tapered roller bearing and a second tapered roller bearing for vertically installing the spiral fan blade on the cooling tower through the bracket are sleeved in turn on the lower part of the spiral fan shaft; the first tapered roller bearing The bearing is connected with the first bracket, and the second tapered roller bearing is connected with the second bracket.

The cooling tower driven by the combination of the vertical axis wind turbine and the motor, wherein a baffle plate for blocking the air discharged from the cooling tower air outlet is installed at the first tapered roller bearing, the baffle plate The size of the plate is the same as the width of the spiral wind blade.

A control method for a cooling tower driven by a combination of a vertical axis wind turbine and a motor as described in any one of the above, including:

When the helical fan blades of the helical vertical axis wind power turning machine arranged on the cooling tower body for driving the fan to rotate are driven by the wind to rotate, the helical fan blades drive the helical fan blade shaft gears to rotate, and the helical fan blades rotate. The fan blade shaft gear drives the fan gear to rotate, and the fan gear drives the motor gear to rotate;

The intelligent control device compares the speed data of the spiral vertical axis wind turbine measured by the speed measuring instrument with the set minimum speed value of the spiral wind blade, and when the measured real-time speed of the spiral wind blade is low When the set minimum speed of the spiral fan blade, the intelligent control device controls the motor to be powered on and enters the working state, and the motor drives the fan to rotate to the rated speed;

The operation of the fan in the cooling tower body will attract or force air into the cooling tower body, so that the air can fully contact the circulating water in the cooling tower for heat exchange, thereby reducing the temperature of the circulating water.

The cooling tower provided by the present invention is driven by the combination of the vertical axis wind turbine and the motor. The present invention mainly uses the spiral vertical axis wind turbine as the driving device to drive the fan of the cooling tower. Cooling tower of the present invention adopts helical vertical axis wind-force rotating machine to have following advantage:

1. The starting wind speed is low, because the helical fan blade has a large wind receiving area and the utilization rate of wind energy is also improved, so the corresponding starting wind speed is low, and it can start and operate under extremely low wind speed conditions. The rotating speed of the fan of the traditional mechanical ventilation cooling tower is 210r-320r/min, but the rotating speed of the spiral vertical axis wind turbine of the present invention can reach 150r/min when the wind speed is 8m/s.

1. When the wind direction changes, there is no need to face the wind, because the fan blades of the spiral vertical axis wind turbine of the present invention are helical, and the wind in any direction can make the spiral fan blades rotate under force, and the characteristics of not needing to face the wind are also improved. utilization of wind energy. The helical vertical axis wind turbine transmits mechanical energy to the cooling tower fan through gear transmission and makes it work. Setting a lower gear transmission ratio can reach the rated speed of the cooling tower fan at a lower wind speed. When the speed of the spiral vertical axis wind turbine is matched according to the gear transmission ratio, the speed of the cooling tower fan reaches its rated speed, and the spiral vertical axis wind turbine drives the cooling tower fan to work to attract or forcibly charge air to the cooling tower. Inside the tower, the air and circulating water are fully contacted inside the cooling tower for heat exchange to achieve the purpose of cooling the circulating water and save the power consumed by the cooling tower motor. When the wind speed is too low and the speed of the spiral vertical axis wind turbine is matched according to the gear transmission ratio, the speed of the cooling tower fan cannot reach its rated speed, the standby motor is powered on and enters the working state, and the motor is used as the driving device to drive the cooling tower fan to run Work. Since the one-way bearing is installed at the rotating shaft gear of the helical vertical axis wind turbine, the low-speed rotation of the helical vertical axis wind turbine does not affect the normal operation of the motor and does not increase the load on the motor when the motor is energized. Using the helical vertical axis wind turbine as the main driving device to drive the cooling tower fan to work and equipped with a backup motor saves a lot of electric energy, so the energy consumption of the motor after the improved cooling tower runs for one year will be greatly reduced.

Description of drawings

Fig. 1 is an overall structural view of a preferred embodiment of a cooling tower driven by a combination of a vertical axis wind turbine and a motor according to the present invention.

Fig. 2 is a structural diagram of a spiral fan blade in a preferred embodiment of a cooling tower driven by a combination of a vertical axis wind turbine and a motor according to the present invention.

Fig. 3 is an enlarged view of three parts in Fig. 1 .

Fig. 4 is a schematic diagram of fan structure and gear engagement of a preferred embodiment of a cooling tower driven by a vertical axis wind turbine and a motor in combination with the present invention.

Fig. 5 is a gear structure and a one-way bearing structure diagram of a preferred embodiment of a cooling tower driven by a vertical axis wind turbine and a motor in combination with the present invention.

Wherein, the label of each part is represented as follows: 1, spiral wind blade 2, spiral wind blade rotating shaft 3, spiral wind blade and cooling tower body docking part 4, cooling tower body 5, baffle plate 6, the first tapered roller bearing 7. The second tapered roller bearing 8, the first bracket 9, the spiral fan blade shaft gear 10, the fan gear 11, the backup motor 12, the reducer 13, the motor gear 14, the fan bracket 15, the fan 16, the first one-way Bearing 17, second support 18, second one-way bearing.

Detailed ways

In order to make the object, technical solution and advantages of the present invention more clear and definite, the present invention will be further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

Please refer to FIG. 1 , which is a schematic structural diagram of a cooling tower driven by a combination of a vertical-axis wind turbine and a motor according to the present invention. The cooling tower driven by the combination of the vertical axis wind turbine and the motor shown in Fig. 1, the cooling tower of the present invention is mainly composed of two parts: the spiral vertical axis wind turbine and the cooling tower body.

Among them, Figure 1 is the overall structure of the cooling tower driven by the combination of the vertical axis wind turbine and the motor of the present invention. Structural diagram, Fig. 3 is an enlarged view of part 3 in Fig. 1, and 4 in the overall structural diagram of the cooling tower in Fig. 1 is the main part of the cooling tower.

Please refer to Fig. 1 to Fig. 5, a kind of cooling tower driven by a vertical axis wind power rotating machine and a motor according to an embodiment of the present invention includes: a cooling tower body 4, a fan 15 arranged in the cooling tower body 4, wherein, It also includes:

The helical vertical axis wind power turning machine for driving the fan 15 to rotate on the cooling tower body 4 is provided with a spiral wind blade 1 for converting wind energy into kinetic energy on the helical vertical axis wind power turning machine ;

The spare motor 11 that is used to auxiliary drive the fan 15 to rotate on the cooling tower body 4;

And the intelligent control connected with the backup motor 11 for controlling the backup motor 11 to turn on and assist the rotation of the fan 15 to reach the rated speed when the spiral vertical axis wind turbine drives the fan 15 to rotate less than a predetermined number device (not shown in the figure).

The cooling tower driven by the combination of the vertical axis wind turbine and the motor according to the embodiment of the present invention, as shown in Figure 2 and Figure 5, the spiral vertical axis wind turbine also includes: connecting and supporting the spiral wind blade 1 The spiral fan blade rotating shaft 2 is arranged on the spiral fan blade rotating shaft gear 9 at the lower end of the spiral fan blade rotating shaft 2 . Preferably, the helical vertical axis wind turbine further includes: a first one-way bearing 16, and the helical fan rotor shaft gear 9 is mounted on the helical wind turbine through the first one-way bearing 16. The lower end of the leaf rotating shaft 2.

Further, the cooling tower driven by the combination of the vertical axis wind turbine and the motor, as shown in FIG. A fan shaft is installed on the fan frame 14, and a fan gear 10 is fixedly installed on the fan shaft, and the fan gear 10 is meshed with the spiral fan blade shaft gear 9. Preferably, in the present invention, a rotational speed measuring instrument (not shown in the figure) for measuring the rotational speed of the helical vertical axis wind turbine is set on the helical fan blade rotating shaft 9 .

Preferably, the cooling tower driven by the combination of the vertical axis wind turbine and the motor of the present invention, as shown in Figure 5, also includes: a motor gear 13 connected with the backup motor 11 and driven by the backup motor 11, the The motor gear 13 is connected to the rotating shaft of the spare motor 11 through the second one-way bearing 18 ; the motor gear 13 is meshed with the fan gear 10 .

As shown in Figure 5, the spiral fan shaft gear 9, the fan gear 10, and the motor gear 13 are installed on the same horizontal plane and meshed normally; when the spiral fan blade 1 drives the spiral fan shaft gear When 9 rotated, the spiral fan blade shaft gear 9 drives the fan gear 10 to rotate, and the fan gear 10 drives the motor gear 13 to rotate. Due to the effect of the second one-way bearing 18, the rotating shaft of the motor is not affected by the torque.

When the motor is working, the helical blade rotating shaft 9 will not be affected by the torque from the motor.

Further, as shown in Figure 2, a bracket for supporting and installing the helical vertical axis wind turbine is provided on the cooling tower body 4, and the bracket includes a first bracket 8 and a second bracket 17;

A first tapered roller bearing 6 and a second tapered roller bearing 7 for vertically installing the spiral fan 1 on the cooling tower through the bracket are sleeved in turn on the lower part of the spiral fan shaft 2; A tapered roller bearing 6 is connected to the first support 8 , and a second tapered roller bearing 7 is connected to the second support 17 .

Further, the cooling tower driven by the combination of the vertical-axis wind turbine and the motor, as shown in Figure 3, is installed at the first tapered roller bearing 6 for blocking the air discharged from the cooling tower outlet. Air baffle 5, the size of the baffle 5 is the same as the width of the spiral fan 1.

It can be seen that the cooling tower driven by the combination of the vertical axis wind turbine and the motor in the embodiment of the present invention mainly includes: the spiral fan blade 1, the spiral fan blade rotating shaft 2, the docking part 3 of the spiral fan blade and the cooling tower body 4, and the cooling tower Body 4, and the cooling tower fan 15 arranged in the cooling tower body 4. Wherein, the design width of the spiral fan blade 1 should be equal to the diameter of the cooling tower body 4. In the present invention, the structure diagram of the spiral fan blade is shown in Figure 2, and the spiral fan blade 1 with a spiral structure has a large wind receiving area. , it can be started at a lower wind speed, and it does not need to face the wind when the wind direction changes, so it has a very high utilization rate of wind energy. The function of the helical fan shaft 2 is to fix the helical fan 1 and transmit the mechanical energy of the helical fan to the cooling tower fan 15, so the helical fan shaft 2 is required to be made of a material with high strength and good tensile properties.

As shown in FIG. 3 , the present invention sequentially installs two first tapered roller bearings 6 and second tapered roller bearings 7 of the same specification for connecting brackets at appropriate positions of the spiral fan blade rotating shaft 2 . The function of the first tapered roller bearing 6 and the second tapered roller bearing 7 is to vertically install the spiral blade 1 on the cooling tower body 4 through a bracket, which includes a first bracket 8 and a second bracket 17 . Preferably, in this embodiment, a rotational speed measuring instrument is installed at the second tapered roller bearing 7, and the rotational speed measuring instrument is used to measure the rotational speed of the helical vertical axis wind turbine in real time.

In the present invention, a baffle plate 5 is installed at the first tapered roller bearing 6. The size of the baffle plate 5 is basically the same as the width of the spiral fan blade 1, and its function is to block the air discharged from the cooling tower outlet. Air, reducing the impact on the normal work of the spiral fan blade. A certain number of first brackets 8 are connected and fixedly installed at the first tapered roller bearing 6 places, and a certain number of second brackets 17 are connected and fixedly installed at the second tapered roller bearing 7 places, the first bracket 8, the second bracket 17 The function is to fix the first tapered roller bearing 6 and the second tapered roller bearing 7 respectively.

As shown in Figure 5, the present invention adopts a first one-way bearing 16 fixedly installed at the bottom end of the spiral fan blade rotating shaft 2 and a spiral fan blade rotating shaft gear 9 is fixedly installed on the outer ring of the first one-way bearing 16. A one-way bearing 16 combined with the helical fan shaft gear 9 is used for one-way transmission of the mechanical energy of the helical fan 1 .

As shown in Figure 3, the present invention adopts that the cooling tower body 4 is provided with a fan support 14, and on the fan support 14 of the cooling tower, a cooling tower fan 15 and a standby motor 11 are fixedly installed. The backup motor 11 is used in conjunction with the speed reducer 12 . A fan gear 10 (with reference to Fig. 5 ) is fixedly installed on the rotating shaft top of fan 15, and a second one-way bearing 18 is fixedly installed on the spare motor 11 rotating shaft top, and a motor gear 13 is fixed on the second one-way bearing 18 outer rings. The spiral fan shaft gear 9, the fan gear 10, and the motor gear 13 are installed on the same horizontal plane and meshed normally, as shown in Figure 5, when the spiral fan blade 1 drives the spiral fan shaft gear 9 to rotate, the spiral The fan blade rotating shaft gear 9 drives the fan gear 10 to rotate, and the fan gear 10 drives the motor gear 13 to rotate. Due to the effect of the second one-way bearing 18, the rotating shaft of the standby motor 11 is not affected by the torque. Similarly, due to the effect of the first one-way bearing 16 , when the backup motor 11 is working, the helical blade rotating shaft 2 will not be affected by the torque from the backup motor 11 .

Preferably, in the embodiment of the present invention, an intelligent control device is installed on the power line of the standby standby motor 11 of the cooling tower. The measured data is compared with the minimum speed value of the set spiral fan 1, when the real-time speed of the spiral fan 1 measured by the speed measuring instrument is lower than the set minimum speed of the spiral fan, the The intelligent control device energizes the standby motor 11 and enters a working state. The energy control device controls the rotational speed of the standby motor 11 according to the data of the rotational speed measuring instrument, so that the rotational speed of the blower fan 15 remains around the rated rotational speed under the joint drive of the spiral fan blade 1 and the spare motor 11. The operation of the fan 15 of the cooling tower will attract or forcibly charge air into the inside of the cooling tower body 4, so that the air can fully contact the circulating water in the cooling tower for heat exchange, thereby reducing the temperature of the circulating water.

The cooling tower of the embodiment of the present invention can be installed on the roof of the building, where the top of the building is rich in wind energy resources, which is more conducive to the utilization of wind energy by the spiral vertical axis wind turbine.

The overall structure of the helical vertical axis wind turbine is required to be made of materials with high strength and high bending resistance.

The working principle of the cooling tower driven by the combination of the vertical axis wind turbine and the motor in the embodiment of the present invention: the key point of the cooling tower of the present invention is mainly to drive the fan 16 of the cooling tower body 4 by rotating the spiral fan blade 1 and assisting Use the spare spare motor 11; when the wind speed is too low so that the speed of the spiral vertical axis wind turbine and the speed of the cooling tower fan matched according to the gear transmission ratio cannot reach its rated speed, the spare motor enters the working state to assist in driving the cooling tower fan run.

The helical fan blade 1 of the helical vertical axis wind turbine has a large wind-receiving area, so the corresponding starting wind speed is also low, and can be started and operated under extremely low wind speed conditions. In addition, the helical fan blade 1 does not need to face the wind when the wind direction changes, because the fan blade of the helical vertical axis wind turbine is helical, and the wind in any direction can make the helical fan blade rotate under force, which improves the wind energy. utilization rate.

When the spiral wind blade 1 is rotated by the wind, the mechanical energy of the spiral wind blade of the spiral vertical axis wind turbine rotates the spiral vertical axis wind through the principle of gear transmission through the spiral blade rotating shaft 2 and the rotating shaft of the fan 15. The mechanical energy of the machine is transmitted to the fan and drives the fan to run.

In order to enter the working state of the helical vertical axis wind turbine under the condition of lower wind speed, the diameter of the helical vane rotating shaft gear of the helical vertical axis wind turbine should be greater than the diameter of the fan gear 10, so that when the helical vertical axis wind When the turning machine is at a certain speed, the speed of the fan 15 in the cooling tower body can be increased according to the gear ratio corresponding to the gear, so that the rated speed of the cooling tower fan can be reached more easily.

The operation of fan 15 will form a pressure difference at the air inlet window and air outlet of cooling tower body 4. Because of the existence of pressure difference, air will be forcibly sucked into the cooling tower from the air inlet window of the cooling tower, and the sucked air will flow from the cooling tower The air inlet window at the bottom flows to the air outlet at the top of the cooling tower. When the air flows in the tower, it fully contacts the water dripping from the water distributor. When the water droplets contact the air, on the one hand, due to the direct heat transfer between the air and the water, On the other hand, due to the pressure difference between the surface of the water vapor and the air, evaporation occurs under the action of the pressure. Since the heat used to evaporate the water droplets reduces the temperature of the water, the remaining water is cooled, thereby achieving a reduction in circulation. water temperature purposes.

When the rotation speed of the helical fan blade 1 of the helical vertical axis wind turbine does not reach the rated speed of the matching cooling tower fan, the intelligent control device energizes the standby motor 11 to enter the working state, and the cooling tower fan is driven by the motor. Since the rotating shaft gear of the spiral vertical axis wind turbine is used in conjunction with the one-way bearing, when the motor is energized to drive the fan to run, the low-speed rotation of the spiral vertical axis wind turbine will not affect the normal operation of the motor and will not increase the speed of the motor. load. When the speed of the spiral vertical axis wind turbine reaches the rated speed of the matching cooling tower fan, the intelligent control device will cut off the power of the motor, and the spiral vertical axis wind turbine will enter the working state to drive the cooling tower fan to run. Using the helical vertical axis wind turbine as the main driving device to drive the fan of the cooling tower to operate and supplemented by a backup motor saves a large amount of electric energy required by the cooling tower motor. In this way, the present invention is mainly driven by wind power, which greatly reduces energy consumption and saves a large amount of electric energy.

The cooling tower of the embodiment of the present invention has the following effects:

One, energy-saving, economical: when the cooling tower of the present invention uses the vertical axis wind-driven rotating machine as the driving device to drive the fan of the cooling tower to work, the electric energy consumed by the motor is saved, and it is more economical.

2. Environmental protection: The helical vertical axis wind turbine utilizes wind energy, which is green energy, non-polluting and more environmentally friendly.

3. Ease of maintenance: the cooling tower implemented in the present invention is very convenient in the maintenance and maintenance process of the equipment because of the simple structure, light weight and humanized design of the spiral vertical axis wind turbine.

Based on the above embodiments, the present invention also provides a control method for a cooling tower driven by a combination of a vertical axis wind turbine and a motor as described in the above embodiments, which includes the following steps:

When the helical fan blades of the helical vertical axis wind power turning machine arranged on the cooling tower body for driving the fan to rotate are driven by the wind to rotate, the helical fan blades drive the helical fan blade shaft gears to rotate, and the helical fan blades rotate. The fan blade shaft gear drives the fan gear to rotate, and the fan gear drives the motor gear to rotate;

The intelligent control device compares the speed data of the spiral vertical axis wind turbine measured by the speed measuring instrument with the set minimum speed value of the spiral wind blade, and when the measured real-time speed of the spiral wind blade is low When the set minimum speed of the spiral fan blade, the intelligent control device controls the motor to be powered on and enters the working state, and the motor drives the fan to rotate to the rated speed;

The operation of the fan in the cooling tower body will attract or forcibly fill the air into the cooling tower body, so that the air can fully contact the circulating water in the cooling tower for heat exchange, thereby reducing the temperature of the circulating water

To sum up, the cooling tower provided by the present invention is driven by the combination of the vertical axis wind turbine and the motor. The present invention mainly uses the spiral vertical axis wind turbine as the driving device to drive the fan of the cooling tower. Cooling tower of the present invention adopts helical vertical axis wind-force rotating machine to have following advantage:

1. The starting wind speed is low, because the helical fan blade has a large wind receiving area and the utilization rate of wind energy is also improved, so the corresponding starting wind speed is low, and it can start and operate under extremely low wind speed conditions. The rotating speed of the fan of the traditional mechanical ventilation cooling tower is 210r-320r/min, but the rotating speed of the spiral vertical axis wind turbine of the present invention can reach 150r/min when the wind speed is 8m/s.

1. When the wind direction changes, there is no need to face the wind, because the fan blades of the spiral vertical axis wind turbine of the present invention are helical, and the wind in any direction can make the spiral fan blades rotate under force, and the characteristics of not needing to face the wind are also improved. utilization of wind energy. The helical vertical axis wind turbine transmits mechanical energy to the cooling tower fan through gear transmission and makes it work. Setting a lower gear transmission ratio can reach the rated speed of the cooling tower fan at a lower wind speed. When the speed of the spiral vertical axis wind turbine is matched according to the gear transmission ratio, the speed of the cooling tower fan reaches its rated speed, and the spiral vertical axis wind turbine drives the cooling tower fan to work to attract or forcibly charge air to the cooling tower. Inside the tower, the air and the circulating water are fully contacted inside the cooling tower for heat exchange to achieve the purpose of cooling the circulating water and save the power consumed by the cooling tower motor. When the wind speed is too low and the speed of the spiral vertical axis wind turbine is matched according to the gear transmission ratio, the cooling tower fan speed cannot reach its rated speed, the backup motor is powered on and enters the working state, and the motor is used as the driving device to drive the cooling tower fan to run Work. Since the one-way bearing is installed at the rotating shaft gear of the helical vertical axis wind turbine, the low-speed rotation of the helical vertical axis wind turbine does not affect the normal operation of the motor and does not increase the load on the motor when the motor is energized. Using the spiral vertical axis wind turbine as the main driving device to drive the cooling tower fan to work and equipped with a backup motor saves a lot of electric energy, so the energy consumption of the motor after the improved cooling tower runs for one year will be greatly reduced.

It should be understood that the application of the present invention is not limited to the above examples, and those skilled in the art can make improvements or transformations according to the above descriptions, and all these improvements and transformations should belong to the protection scope of the appended claims of the present invention.

Claims (6)

1. a kind of cooling tower driven by vertical axis wind-driven rotating machine and motor, comprising: cooling tower body, the blower fan that is arranged in cooling tower body, it is characterized in that, it also includes: A helical vertical-axis wind-powered rotor for driving the fan to rotate on the cooling tower body, and a helical blade for converting wind energy into kinetic energy is arranged on the helical vertical-axis wind-powered rotor; A spare motor arranged on the cooling tower body to assist in driving the fan to rotate; And an intelligent control device connected to the backup motor for controlling the backup motor to turn on and assist in driving the fan speed to the rated speed when the speed of the fan driven by the spiral vertical axis wind turbine is lower than a predetermined speed; The spiral vertical axis wind-driven machine further includes: a spiral blade shaft gear arranged at the lower end of the spiral blade shaft connected to and supporting the spiral blade; The helical vertical axis wind turbine further includes: a first one-way bearing, the gear of the helical fan shaft is mounted on the lower end of the helical fan shaft through the first one-way bearing; The cooling tower also includes: a motor gear connected to the backup motor and driven by the backup motor, the motor gear is connected to the rotating shaft of the backup motor through a second one-way bearing; the motor gear is meshed with the fan gear; The spiral fan shaft gear, the fan gear, and the motor gear are installed on the same horizontal plane and meshed normally; when the spiral fan blade drives the spiral fan shaft gear to rotate, the spiral fan shaft gear Drive the fan gear to rotate, and the fan gear drives the motor gear to rotate. Due to the effect of the second one-way bearing, the motor shaft is not affected by the torque; When the motor is working, the helical fan shaft will not be affected by the torque from the motor; When the motor is energized to drive the fan to run, the low-speed rotation of the spiral vertical axis wind turbine will not affect the normal operation of the motor and will not increase the load on the motor: The helical fan blades with a helical structure have a large wind receiving area, can be started at low wind speeds, and do not need to face the wind when the wind direction changes, and have extremely high wind energy utilization. 2. The cooling tower driven by the combination of the vertical axis wind turbine and the motor according to claim 1, wherein a fan support for installing the fan is arranged in the cooling tower body, and the fan passes through a fan shaft It is installed on the frame of the fan, and a fan gear is fixedly installed on the fan rotating shaft, and the fan gear is meshed with the spiral fan blade rotating shaft gear. 3. The cooling tower driven by the combination of the vertical axis wind turbine and the motor according to claim 2, wherein the rotating shaft of the spiral fan blade is provided with a rotating speed for measuring the rotation speed of the spiral vertical axis wind turbine Measuring instrument. 4. The cooling tower driven by the combination of the vertical axis wind turbine and the motor according to claim 1, wherein a bracket for supporting and installing the spiral vertical axis wind turbine is arranged on the cooling tower body, The support includes a first support and a second support; The first tapered roller bearing and the second tapered roller bearing used to vertically install the vertical axis wind turbine on the cooling tower through the bracket are sequentially sleeved on the lower part of the spiral fan blade shaft; the first tapered roller bearing The sub-bearing is connected with the first bracket, and the second tapered roller bearing is connected with the second bracket. 5. The cooling tower driven by the combination of the vertical axis wind turbine and the motor according to claim 4, characterized in that, at the first tapered roller bearing, a device for blocking the discharge from the cooling tower outlet is installed. An air baffle, the size of the baffle is the same as the width of the spiral fan blade. 6. A control method for a cooling tower driven by a vertical axis wind turbine and a motor in combination with any one of claims 1-5, characterized in that it comprises: When the helical fan blades of the helical vertical axis wind power rotating machine used to drive the fan to rotate on the cooling tower body are driven by the wind to rotate, the helical fan blades drive the helical fan blade rotating shaft gear to rotate, and the spiral fan blades The fan blade shaft gear drives the fan gear to rotate, and the fan gear drives the motor gear to rotate; The intelligent control device compares the speed data of the spiral vertical axis wind turbine measured by the speed measuring instrument with the set minimum speed value of the spiral wind blade, and when the measured real-time speed of the spiral wind blade is low At the set minimum speed of the spiral fan blade, the intelligent control device controls the motor to be energized and enters the working state, and drives the fan to rotate to the rated speed through the motor; The operation of the fan in the cooling tower body will attract or force air into the cooling tower body, so that the air can fully contact the circulating water in the cooling tower for heat exchange, thereby reducing the temperature of the circulating water.