Efficient energy-saving intelligent cooling tower

Abstract

The invention relates to the technical field of cooling towers, in particular to a high-efficiency energy-saving intelligent cooling tower which comprises a tower body, a water tank, a water pump, a flow valve, a heat exchanger, a plurality of pipelines, a water turbine, a generator and a compensation motor, the water tank is arranged at the bottom of the tower body, a water outlet of the water tank is connected with the water pump through a pipeline, and a water outlet of the water pump is connected with the flow valve through a pipeline; one end of the flow valve is connected with a heat exchanger through a pipeline, a water outlet of the heat exchanger is connected with a water turbine through a pipeline, and a center shaft of the water turbine is connected with a generator and a compensation motor. According to the efficient energy-saving intelligent cooling tower, the center shaft of the water turbine is connected with the generator, rotation power is transmitted through the center shaft, the generator generates electricity and creates renewable energy, and due to the fact that the generator is connected with external electrical equipment, electric energy can be provided for the external electrical equipment, kinetic energy of the water turbine is fully utilized, and the cooling tower is more energy-saving and environmentally friendly; the center shaft of the water turbine is connected with the compensation motor, and normal use can be guaranteed when the temperature is low.

Description

Technical Field

[0001] The invention relates to the technical field of cooling towers, in particular to a high-efficiency, energy-saving and intelligent cooling tower. Background Art

[0002] A traditional cooling tower is a heat exchange device that uses a motor to drive a fan to form air convection and use air to cool circulating water, providing circulating cooling water that meets process requirements.

[0003] A circulating water cooling tower is a device that uses water as a circulating coolant to absorb heat from a system and discharge it into the atmosphere to reduce the water temperature. The top fans of existing circulating water cooling towers are all driven by a separate motor, and the circulating water is driven by a circulating water pump to the top of the tower and then falls naturally. A large amount of electrical energy is required to drive the top fan, but the gravitational potential energy of the cooling water and the excess head of the circulating water pump are not effectively utilized, resulting in a waste of resources.

[0004] The Chinese patent application number 201620058731.6 discloses a turbine cooling tower, which specifically includes a tower body, a fan blade, a turbine, a pool and a water pump. The output shaft of the turbine is connected to the fan blade, the output end of the water pump is connected to the input end of the turbine through a first pipe, the tower body is provided with a lever for driving the fan blade to rotate, the lever is hinged to the outside of the tower body, the side wall of the tower body is provided with a travel hole for one end of the lever to penetrate and swing, and the outer wall of the tower body is provided with a second pipe, one end of the second pipe is connected to the first pipe, and the other end is provided with a driving member for driving the lever to swing. The turbine cooling tower drives the lever to rotate by a piston rod, so that the lever swings around the hinge so that the lever drives the fan blade to rotate along the direction of rotation of the fan blade, and the rotation of the fan blade drives the output shaft of the turbine to rotate, and then the turbine rotates continuously under the action of the circulating water input by the first pipe, so that the turbine is ensured to start normally and rotate continuously to make the turbine cooling tower work normally.

[0005] Although the above-mentioned circulating water cooling tower eliminates the motor and reducer in the cooling tower, saves energy, and can ensure the continuous rotation of the turbine, its structure is complex, and the residual pressure generated by the turbine during continuous rotation is not well utilized, which still leads to waste of resources. In addition, when the water temperature drops slowly in summer and the cooling effect is poor, the pressure to drive the turbine is insufficient, making the circulating water cooling tower system unable to work normally. Summary of the invention

[0006] 1. Technical issues to be resolved

[0007] In view of the deficiencies in the prior art, the present invention provides a highly efficient and energy-saving intelligent cooling tower, which solves the problems of the existing cooling towers wasting resources and not being able to be used normally in bad weather.

[0008] (II) Technical solution

[0009] The present invention provides the following technical solution: an efficient and energy-saving intelligent cooling tower, comprising a tower body, a water tank, a water pump, a flow valve, a heat exchanger, a plurality of pipes, a turbine, a generator and a compensating motor, wherein the water tank is arranged at the bottom of the tower body, the water outlet of the water tank is connected to the water pump through a pipe, the water outlet of the water pump is connected to the flow valve through a pipe, one end of the flow valve is connected to the heat exchanger through a pipe, the water outlet of the heat exchanger is connected to the turbine through a pipe, and the central axis of the turbine is connected to the generator and the compensating motor.

[0010] Preferably, the generator is connected to an external electrical device to provide electrical energy to the external electrical device.

[0011] Preferably, the water-guiding blades of the water turbine include a base plate, a turntable, blades and a cover plate, the blade annular array is between the base plate and the cover plate, the cover plate is provided with an arc groove, the base plate is provided with a limiting column, the upper end surface of the blade is provided with a connecting column adapted to the arc groove, the lower end surface is provided with a groove adapted to the limiting column, and the turntable is provided with a circular hole adapted to the connecting column.

[0012] Preferably, an external thread is provided on the outer side of one of the connecting columns, and the connecting column passes through the circular hole and the arc groove in sequence to the upper side of the cover plate, and fixes the blades by a nut.

[0013] Preferably, the cooling tower is connected to a management system, which includes a monitoring module and a control module. The monitoring module monitors vibration, rotation speed, equipment temperature, valve opening, water temperature, operating time and equipment failure, and connects the above operating data with the DCS system and displays it on a display screen; the control module controls the normal operation of the cooling tower.

[0014] (III) Beneficial effects

[0015] Compared with the prior art, the present invention provides a high-efficiency, energy-saving and intelligent cooling tower, which has the following beneficial effects:

[0016] 1. In this high-efficiency and energy-saving intelligent cooling tower, the central axis of the turbine is connected to the generator, and the rotational power is transmitted through the central axis to enable the generator to generate electricity and create renewable energy. Since the generator is connected to external electrical equipment, it can provide electrical energy for external electrical equipment, so that the kinetic energy of the turbine is fully utilized, which is more energy-saving and environmentally friendly; the central axis of the turbine is connected to the compensating motor. When the temperature is low and the water temperature drops quickly, the compensating motor is generally not enabled to achieve energy-saving effects. However, in summer when the circulating water cools down slowly, the turbine has insufficient residual pressure on the circulating water, or when the circulating water volume is small, the power is insufficient. At this time, the cooling tower cannot operate normally and cannot meet the use requirements. Therefore, it is necessary to start the compensating motor to quickly drive the turbine to quickly cool the water to meet production needs and ensure that the cooling tower can be used normally in any severe weather. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of an embodiment of a high-efficiency energy-saving intelligent cooling tower of the present invention;

[0018] Figure 2 It is a structural schematic diagram of a water turbine, a generator and a compensating motor of an embodiment of a high-efficiency energy-saving intelligent cooling tower of the present invention;

[0019] Figure 3 The present invention is a schematic structural diagram of a water guide blade of an embodiment of a high-efficiency, energy-saving, intelligent cooling tower.

[0020] In the figure: 1. tower body; 2. water tank; 3. water pump; 4. flow valve; 5. heat exchanger; 6. pipeline; 7. turbine; 8. generator; 9. compensation motor; 10. water guide blade; 101. bottom plate; 102. turntable; 103. blade; 104. cover plate; 105. arc groove; 106. limit column; 107. connecting column; 108. round hole; 109. external thread; 1010. nut; 11. fan blade. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0022] As introduced in the background technology, there are deficiencies in the prior art. In order to solve the above technical problems, this application proposes a high-efficiency, energy-saving and intelligent cooling tower.

[0023] See also Figure 1-3A high-efficiency and energy-saving intelligent cooling tower includes a tower body 1, a water tank 2, a water pump 3, a flow valve 4, a heat exchanger 5, multiple pipes 6, a turbine 7, a generator 8 and a compensation motor 9. The water tank 2 is arranged at the bottom of the tower body 1, the water outlet of the water tank 2 is connected to the water pump 3 through the pipe 6, the water outlet of the water pump 3 is connected to the flow valve 4 through the pipe 6, one end of the flow valve 4 is connected to the heat exchanger 5 through the pipe 6, the water outlet of the heat exchanger 5 is connected to the turbine 7 through the pipe 6, and the central axis of the turbine 7 is connected to the generator 8 and the compensation motor 9.

[0024] The invention discloses an efficient and energy-saving intelligent cooling tower, which mainly comprises a tower body 1, a water tank 2, a water pump 3, a flow valve 4, a heat exchanger 5, a plurality of pipes 6, a turbine 7, a generator 8 and a compensation motor 9, wherein the water tank 2 is arranged at the bottom of the tower body 1, and is filled with cold water; the water pump 3 is connected to the water tank 2, and pumps the water in the water tank into the heat exchanger 5 for heating, and the heated hot water is transported to the turbine 7 and the generator 8 through the pipe 6, and the turbine 7 uses the kinetic energy of water to drive the water guide blades 10 therein to rotate, thereby generating mechanical energy, so that the fan blades 11 thereon rotate, and the effect of lowering the water temperature is achieved; the pipe 6 is also provided with a flow valve 4, which can control the flow entering the turbine according to the water temperature, thereby reducing energy waste. The central axis of the water turbine 7 is connected to the generator 8, which transmits the rotational power through the central axis, so that the generator generates electricity and creates renewable energy. Since the generator 8 is connected to external electrical equipment, it can provide electrical energy for the external electrical equipment, so that the kinetic energy of the water turbine is fully utilized, which is more energy-saving and environmentally friendly; the central axis of the water turbine 7 is connected to the compensation motor 9. When the temperature is low and the water temperature drops quickly, the compensation motor 9 is generally not enabled to achieve the effect of energy saving. However, in summer, when the circulating water cools slowly, the water turbine is insufficient to provide residual pressure for the circulating water, or when the circulating water volume is small, the power is insufficient. At this time, the cooling tower cannot operate normally and cannot meet the use requirements. Therefore, it is necessary to start the compensation motor 9 to quickly drive the water turbine 7, so that the water quickly cools down to meet the production needs and ensure that the cooling tower can be used normally in any bad weather. The compensation motor solves the problem of power compensation when the return water condition of the cooling tower is not enough to support the water turbine to reach the rated speed. The compensation is to make up for the shortfall based on the existing power.

[0025] In a preferred embodiment, referring to Figure 3The water guide blade 10 of the water turbine of the cooling tower includes a bottom plate 101, a rotating disk 102, a blade 103 and a cover plate 104. The blade 103 is arranged in an annular array between the bottom plate 101 and the cover plate 104. The cover plate 104 is provided with an arc groove 105. The bottom plate 101 is provided with a limiting column 106. The upper end surface of the blade 103 is provided with a connecting column 107 adapted to the arc groove 105, and the lower end surface is provided with a groove adapted to the limiting column 106. The rotating disk 102 is provided with a circular hole 108 adapted to the connecting column 107. An external thread 109 is provided on the outer side of the connecting column 107. The connecting column 107 passes through the circular hole 108 and the arc groove 105 to the upper side of the cover plate 104 in sequence, and fixes the blade 103 through a nut 1010.

[0026] Specifically, the water guide blade 10 is driven to rotate by the water flow to impact the blade 103, and it has the functions of guiding the water flow, controlling the water flow speed, increasing the kinetic energy of the water flow, and reducing the eddy current loss of the water flow. Most of the existing water guide blades are fixed structures, which cannot control the water flow well, resulting in waste of resources. Therefore, the water guide blade 10 of the present application is set as a detachable structure. At the same time, the blade 103 therein can also adjust the angle according to the water temperature, reducing energy waste. When the angle of the blade 103 needs to be adjusted, the nut 1010 is first loosened to make the connecting column 107 rotate in the arc groove 105. At the same time, the blade 103 will rotate with the rotation of the connecting column 107. Since the bottom thereof is provided with a groove and connected to the limit column 106, the blade 103 will rotate a certain angle. At this time, the water flow will increase or decrease the performance of the turbine due to the change in angle, ensuring the service life of the turbine. After the angle of the blade 103 is adjusted, the blade 103 is locked by the nut.

[0027] The cooling tower is connected to a management system, which includes a monitoring module and a control module. The monitoring module monitors vibration, rotation speed, equipment temperature, valve opening, water temperature, operating time and equipment failure, and connects the above operating data to the DCS system and displays it on the display screen; the control module controls the normal operation of the cooling tower.

[0028] China SEI cooling tower design standard: 5000m 3 / h tower is equipped with a 250kw motor, calculated based on the 440~500kw motor of a 10,000-ton cooling tower device:

[0029] Traditional cooling tower energy consumption:

[0030] Calculated based on an average of 8,000 hours per year, 500kW / h×8,000h / year=4 million kW / year. Traditional tower water loss:

[0031] The floating water rate is calculated based on 0.0015 tons of circulating water per hour. The floating water loss of a 10,000-ton tower per year is:

[0032] 10,000 tons / year×0.0015=150,000 tons / year.

[0033] CO2 emissions:

[0034] The annual carbon dioxide emissions per 10,000 tons of circulating water system are:

[0035] 500kW / h×8000h / year / 3333kW / ton of coal=1200 tons of standard coal;

[0036] 1200 tons of standard coal × 2.7 tons of carbon dioxide / ton of coal = 3240 tons of carbon dioxide;

[0037] 3240 tons of carbon dioxide x 300 yuan / ton of carbon dioxide = 972,000 yuan.

[0038] It can be seen from this that traditional cooling towers have high energy consumption, large water losses, and large carbon dioxide emissions, and do not have the effect of energy saving and environmental protection.

[0039] The energy-efficient and intelligent cooling tower of the present application has the following characteristics:

[0040] 1. Changing the previous operating principle and mode of cooling towers, this system uses the outlet water temperature as the control point. With the seasonal and day-night temperature changes, it automatically adjusts the production load to always keep the outlet water temperature constant, which can provide reliable guarantees for the smooth operation of production equipment, stable product quality and digital operation management.

[0041] 2. Efficiently utilize the kinetic energy and potential energy of the return water to replace the work of the motor on the tower, which can save more than 90% of electricity. At the same time, when the recovered kinetic energy and potential energy are insufficient, the power compensation device provides double protection to ensure that the fan speed always meets the process requirements, thereby ensuring the temperature reduction effect.

[0042] 3. The intelligent digital management system of the cooling tower has changed the traditional extensive manual operation mode and realized intelligent control of automatic adaptation, automatic monitoring and automatic adjustment. It can achieve accurate and constant water temperature out of the tower under any working conditions, and at the same time save more than 50% of the water loss caused by excessive wind or high temperature.

[0043] 4. The service life of the high-efficiency and energy-saving cooling tower is greatly improved, which greatly reduces the inspection and maintenance costs.

[0044] 5. The system can realize DCS control through configuration. It can also switch between automatic and manual mode, so that the cooling tower can realize automatic control like other production equipment.

[0045] The high-efficiency, energy-saving, intelligent cooling tower of the present invention is aimed at energy conservation and emission reduction of circulating water in large and medium-sized industrial enterprises. It integrates hydraulic machinery, compensation power, temperature vibration sensing, automatic fan speed adjustment, out-of-tower water temperature regulation, monitoring, programs and other machinery and software. It takes the out-of-tower water temperature as the control point and accurately provides the fan speed and out-of-tower water temperature under system control to reduce floating water losses, providing enterprise users with integrated, automated and visualized energy-saving management services. The energy-saving efficiency can be as high as more than 90%, saving more than 60% of floating water losses.

[0046] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A high-efficiency and energy-saving intelligent cooling tower, characterized in that: The utility model comprises a tower body, a water tank, a water pump, a flow valve, a heat exchanger, a plurality of pipes, a water turbine, a generator and a compensating motor. The water tank is arranged at the bottom of the tower body. The water outlet of the water tank is connected to the water pump through a pipe. The water outlet of the water pump is connected to the flow valve through a pipe. One end of the flow valve is connected to the heat exchanger through a pipe. The water outlet of the heat exchanger is connected to the water turbine through a pipe. The central axis of the water turbine is connected to the generator and the compensating motor.

2. The high-efficiency energy-saving intelligent cooling tower according to claim 1 is characterized in that: The generator is connected to external electrical equipment to provide electrical energy to the external electrical equipment.

3. The high-efficiency energy-saving intelligent cooling tower according to claim 1 is characterized in that: The water guide blades of the water turbine include a base plate, a rotating disk, blades and a cover plate. The blade annular array is between the base plate and the cover plate. The cover plate is provided with an arc groove, and the base plate is provided with a limiting column. The upper end surface of the blade is provided with a connecting column matched with the arc groove, and the lower end surface is provided with a groove matched with the limiting column. The rotating disk is provided with a circular hole matched with the connecting column.

4. The high-efficiency energy-saving intelligent cooling tower according to claim 3 is characterized in that: An external thread is arranged on the outer side of the connecting column, and the connecting column passes through the circular hole and the arc groove in sequence to the upper side of the cover plate, and fixes the blades through a nut.

5. The high-efficiency and energy-saving intelligent cooling tower according to claim 1 is characterized in that: The cooling tower is connected to a management system, which includes a monitoring module and a control module. The monitoring module monitors vibration, rotation speed, equipment temperature, valve opening, water temperature, operating time and equipment failure, and connects the above operating data with the DCS system and displays it on the display screen; the control module controls the normal operation of the cooling tower.

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