CN103453783B - A kind of stored energy power source drives and the cooling tower run - Google Patents

Abstract

The invention relates to a cooling tower driven and operated by an energy storage power source, which includes a cooling tower main body with a water return pipe and a water outlet pipe, a fan, a water turbine, a motor, a gear, a governor, a bracket, a temperature measuring sensor, and a speed measuring sensor , wherein: the fan is connected to the water turbine, the motor is connected to the governor, the return pipe and the outlet pipe are respectively provided with temperature measuring sensors, the output shaft of the water turbine and the output shaft of the governor are respectively provided with speed measuring sensors, and it is characterized in that it also includes a flywheel device The energy storage power source device is connected with the motor through the chain, and the energy storage power source device is composed of a supercapacitor and a battery connected in parallel. The signals of the temperature measurement sensor and the speed measurement sensor are input to the intelligent controller, and the intelligent controller controls the adjustment respectively. Gearbox and energy storage power source device. The invention has the advantage of dual control of driving and operating the cooling tower by adopting an energy storage power source, ensures energy saving and consumption reduction of the cooling tower, and improves the operating efficiency of the cooling tower.

Description

A cooling tower driven and operated by an energy storage power source

technical field

The invention relates to a cooling tower, in particular to a cooling tower driven and operated by an energy storage power source.

Background technique

A cooling tower is a heat exchange device that uses the principle of heat exchange to reduce the water temperature by convectively exchanging high temperature water with low temperature air. Cooling tower equipment is used in many industries such as electric power, petroleum, chemical industry, metallurgy, and commercial service industries. The application range of cooling towers is very wide. However, cooling tower equipment consumes a lot of energy during the heat exchange process. How to reduce cooling tower equipment? The energy consumption of operation will play an important role in alleviating the contradiction between current energy supply and demand tension. Known cooling tower drive operation modes include electric drive, water drive and hydroelectric dual power drive. Among them: electric drive is driven by a motor to drive the cooling tower fan. The cooling tower fan needs to consume a lot of electric energy. The economical efficiency of cooling tower operation Very poor; water drive refers to using the abundant water head at the outlet of the circulating cooling water to drive the fan of the cooling tower to run through the water turbine, also known as the water-driven fan cooling tower, but in actual operation, it will inevitably occur due to insufficient driving energy of the water turbine. To meet the needs of cooling tower fan operation and other issues; hydroelectric dual power drive is to use electric drive to compensate when the water drive is insufficient to ensure the normal operation of the cooling tower fan, but the actual power consumption is still relatively large.

Chinese patent application 201210056352.X discloses "a cooling tower hydroelectric hybrid power device", which removes the main motor and installs a hydroelectric integrated machine device consisting of a water turbine and an auxiliary motor for power compensation at the position of the original motor outside the cooling tower air duct , although this scheme can make full use of the kinetic energy of the water turbine to save the energy consumption of the high-power main motor, and can ensure the normal operation of the hydropower integrated device by supplementing the motor with a small power when the energy of the water turbine is insufficient, but the scheme still has the following deficiencies : First, the actual power consumption is still relatively large, and the operating cost of using daytime power is very high; second, the cooling tower operating system lacks intelligent control, and the overall operating efficiency is not high; The reliability of tower operation is reduced.

How to overcome the deficiencies in the prior art has become one of the major problems to be solved urgently in the technical field of cooling towers today.

Contents of the invention

The purpose of the present invention is to provide a cooling tower driven and operated by an energy storage power source in order to overcome the deficiencies of the prior art. Consumption, improve the efficiency of cooling tower operation.

A cooling tower driven and operated by an energy storage power source according to the present invention includes a cooling tower main body with a return pipe and an outlet pipe, a fan, a water turbine, an electric motor, a gear, a governor, a bracket, a temperature sensor, The speed measuring sensor, wherein: the fan is connected to the water turbine, the motor is set on the bracket fixed to the main body of the cooling tower, the motor is connected to the governor, the return pipe and the outlet pipe are respectively equipped with temperature measuring sensors, the output shaft of the water turbine and the governor The output shafts are respectively equipped with speed measuring sensors, which are characterized in that they also include a flywheel device, an energy storage power source device and an intelligent controller. The flywheel device is connected to the governor through a chain, the energy storage power source device is connected to the motor, and the energy storage power source device It is composed of a supercapacitor and a battery connected in parallel. The signals of the temperature sensor and the speed sensor are input to the intelligent controller, and the intelligent controller controls the governor and the energy storage power source device respectively.

The working principle of the present invention is as follows: firstly, the present invention cleverly utilizes the function of the energy storage power source device to store electric energy at night and release electric energy during the day, which can not only solve the problem of insufficient electricity consumption during the day but sufficient electricity consumption at night, but also can be used at night Low electricity cost to solve the problem of high energy consumption of cooling towers; secondly, under the control of the intelligent controller, the supercapacitor and battery in the energy storage power source device work in parallel. When the power of the turbine cannot meet the requirements, the supercapacitor Provide a strong starting current to the motor to drive the motor to rotate, and when the motor rotates normally, the battery will provide a smaller current to support the normal operation of the motor, so as to realize the smooth operation of the cooling tower; thirdly, the water turbine and the motor jointly drive the cooling tower device During the operation of the fan, the intelligent controller analyzes the turbine speed, motor speed, return water temperature, and outlet water temperature in real time, controls the governor in real time, and intelligently distributes the respective power output of the turbine and the motor to ensure the air volume required by the cooling tower. At the same time, the purpose of energy saving is achieved to the greatest extent; Fourth, the flywheel device provided by the present invention will enable the electric motor and the water turbine to alternately switch into or out of operation in real time.

Compared with the prior art, the present invention has the following remarkable advantages: First, on the basis of retaining the existing dual-power drive of hydropower, it further exerts the dual-control advantages of the energy storage power source drive and the operation of the cooling tower, highlighting the effect of energy saving and consumption reduction Significantly, the energy consumption and operation cost of the cooling tower is reduced by more than 30%; secondly, the intelligent control of the entire cooling tower system by the PID intelligent controller is used to ensure the optimization of the operating efficiency of the cooling tower; The function of fast alternate conversion and smooth operation or withdrawal ensures the reliable operation of the cooling tower device. The invention is suitable for wide popularization and application in various fields such as electric power, refrigeration, petroleum, chemical industry, metallurgy and commercial service industry.

Description of drawings

Fig. 1 is a schematic front view sectional view of a cooling tower driven and operated by an energy storage power source proposed by the present invention.

Fig. 2 is a schematic block diagram of the energy storage power source device proposed by the present invention.

Fig. 3 is a front sectional schematic view of the flywheel device proposed by the present invention.

Fig. 4 is a top half-sectional schematic diagram of the flywheel device proposed by the present invention.

Fig. 5 is a schematic diagram of the working principle of the intelligent controller proposed by the present invention to control the outlet water temperature.

Fig. 6 is a schematic diagram of the workflow of the intelligent controller controlling the energy storage power source device proposed by the present invention.

Detailed ways

The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

1, the present invention proposes a cooling tower driven and operated by an energy storage power source, which includes a cooling tower main body (1) with a return pipe (10) and an outlet pipe (11), a fan (2), a water turbine (3), motor (4), gear (5), governor (6), bracket (7), temperature sensor (8), speed sensor (9), flywheel device (12), chain (13), An energy storage power source device and an intelligent controller (16), wherein: the fan (2) is connected to the water turbine (3), the motor (4) is set on a support (7) fixed to the cooling tower main body (1), and the motor ( 4) Connect with the governor (6), set the temperature measuring sensor (8) on the return pipe (10) and the outlet pipe (11) respectively, and install the output shaft of the turbine (3) and the output shaft of the governor (6) The speed sensor (9) is set, the flywheel device (12) is connected to the governor (6) through the chain (13), the energy storage power source device is connected to the motor (4), and the energy storage power source device is composed of a supercapacitor (14) and The batteries (15) are connected in parallel, the signals of the temperature measuring sensor (8) and the speed measuring sensor (9) are input to the intelligent controller (16), and the intelligent controller (16) controls the governor (6) and the energy storage power source device respectively . A further preferred solution of the present invention is: the flywheel device (12) includes a jacket (17), a core (18), a flat file (19), a wire file (20), a core washer (21), a jack (22), a jack Spring (23), steel ball (24) and internal tooth (25), wherein: outer cover (17) is connected with core (18) slidingly by steel ball (24), and flat file (19) passes wire file (20) and The core washer (21) is fixedly connected with the core (18), the jack (22) is compressed and connected with the jack spring (23), and the inner teeth (25) are meshed with the jack (22); the intelligent controller (16) is PID controlled device.

In conjunction with Fig. 2, the embodiment of the energy storage power source device proposed by the present invention is: the energy storage power source device adopts a hybrid energy storage power source connected in parallel with a supercapacitor (14) and a storage battery (15), and the intelligent controller of the present invention Under control, the supercapacitor (14) provides a strong starting current to the motor (4) to drive the motor (4) to rotate. After the motor (4) rotates normally, the supercapacitor (14) is disconnected from the motor (4), and the battery (15) Provide a small current to support the normal operation of the motor (4).

3 and 4, the embodiment of the flywheel device (12) proposed by the present invention is: the energy storage power source device of the present invention is connected with the motor (4), the motor (4) is connected with the governor (6), and the speed regulator (6) The gear (6) is connected with the outer gear (17) of the flywheel device (12) through a chain (13), and when the motor (4) is running, the internal teeth (25) of the flywheel device (12) mesh with the jack (22) , the jack (22) is connected to the core (18), and the core (18) is connected to the fan (2), thereby driving the fan (2) to rotate and realizing the requirement of transmitting the power of the motor (4) to the fan (2); When the motor (4) was out of operation, the speed governor (6) and the chain (13) stopped rotating, and the flywheel device (12) under the synergy of its jack (22) and jack spring (23), the overcoat (17) and Internal tooth (25) stops rotating, and internal tooth (25) disengages with very heavy (22) simultaneously, and conversion drives core (18) and very heavy (22) to rotate by water turbine (3) and blower fan (2). The flywheel device (12) plays the role of quickly and alternately switching the electric motor (4) and the water turbine (3) and putting them into or out of operation smoothly. The water turbine (3) is coaxial with the fan (2), so their angular velocities are equal. If the angular velocity of the output shaft of the water turbine (3) is ω ₁ , the angular velocity of the flywheel device (12) is ω ₂ , and the angular velocity of the output shaft of the governor (6) is ω ₃ . Wherein there is a conversion coefficient between ω ₂ and ω ₃ , and the conversion coefficient is determined by the gear ratio between the gear of the flywheel device (12) and the gear (5). Taking ω ₁ and ω ₂ as examples below, the power ratio between the turbine (3) and the motor (4) will be described. Under working condition, flywheel device (12) and gear (5) all are clockwise rotation work. When ω ₁ >ω ₂ , it can be seen from Fig. 3 that the flywheel device (12) does not generate torque force on the output shaft of the fan (2), and only relies on the water turbine (3) as the power source for the operation of the fan (2); when ω ₁ When <ω ₂ , the flywheel device (12) drives the output shaft of the fan (2) to run on the basis of the work of the water turbine (3), that is, the water turbine (3) and the motor (4) are jointly used as the power source of the fan (2).

In conjunction with Fig. 5, the embodiment of the intelligent controller (16) proposed by the present invention to control the outlet water temperature: first, the present invention sets a given outlet water temperature value for the outlet water temperature, and the outlet pipe (11) measured by the temperature sensor (8) ) is compared with the given outlet water temperature value and then input to the intelligent controller (16), and the intelligent controller (16) adjusts the governor (6) and the energy storage power source device accordingly according to the input signal; The second is that after the intelligent controller (16) comprehensively analyzes the input signals such as the speed of the water turbine (3), the speed of the output shaft of the governor (6), the temperature of the return water, and the temperature of the outlet water, it determines the speed of the governor (6) and the energy storage power. The working mode of the source device, thereby intelligently controlling the power distribution between the water turbine (3) and the electric motor (4).

In conjunction with Fig. 6, the intelligent controller (16) proposed by the present invention controls the implementation of the energy storage power source device: when the measured rotational speed of the water turbine (3) cannot meet the driving force requirement, the intelligent controller (16) uses the energy storage The power source device puts the motor (4) into operation, specifically: firstly, the intelligent controller (16) controls the supercapacitor (14) in the energy storage power source device as the starting power of the motor (4); secondly, when the motor (4) ) into normal operation, the intelligent controller (16) controls the battery (15) in the energy storage power source device as the operating power of the motor (4); thirdly, the intelligent controller (16) analyzes the measured water turbine ( 3) The speed and the required speed of the fan (2) determine the power that the motor (4) needs to provide, and adjust the corresponding power through the governor (6).

Now take the cooling tower device with a flow rate of 500t/h as an example, and disclose the parameters of the main components of a cooling tower device driven and operated by a kind of energy storage power source proposed by the present invention: the supercapacitor of the energy storage power source device adopts SPSC120V62F (rated voltage 120V, rated capacity 62F), the output voltage of the battery is 10-120V, and the output current is 50-80A; the intelligent controller (16) adopts a PID controller, model ModiconM218; The diameter of the top circle is 310mm; the governor (6) adopts a DC governor, model HG-590C; the motor (4) adopts HPM10KW (rated power 10kW, rated voltage 120V).

The above specific implementation methods and examples are specific support for the technical idea of a cooling tower driven and operated by an energy storage power source proposed by the present invention, and cannot limit the scope of protection of the present invention. Any equivalent changes or equivalent changes made on the basis of the technical solution still belong to the protection scope of the technical solution of the present invention.

Claims (2)

1. A cooling tower driven and operated by an energy storage power source, it comprises a cooling tower main body (1), a blower fan (2), a water turbine (3), an electric motor ( 4), gear (5), governor (6), bracket (7), temperature sensor (8), speed sensor (9), wherein: fan (2) is connected with water turbine (3), motor (4) It is arranged on the bracket (7) fixedly connected with the main body (1) of the cooling tower, the motor (4) is connected with the governor (6), and the temperature measuring sensors (8 ), the output shaft of the water turbine (3) and the output shaft of the governor (6) are respectively provided with a speed sensor (9), which is characterized in that it also includes a flywheel device (12), an energy storage power source device and an intelligent controller (16) , the flywheel device (12) is connected to the governor (6) through a chain (13), the energy storage power source device is connected to the motor (4), and the energy storage power source device is composed of a supercapacitor (14) and a battery (15) connected in parallel , the signals of the temperature measuring sensor (8) and the speed measuring sensor (9) are input to the intelligent controller (16), and the speed governor (6) and the energy storage power source device are respectively controlled by the intelligent controller (16); wherein: Described flywheel device (12) comprises overcoat (17), core (18), flat file (19), silk file (20), core washer (21), very heavy (22), very heavy spring (23), steel Balls (24) and internal teeth (25); the outer casing (17) is slidably connected to the core (18) through steel balls (24), and the flat gear (19) is passed through the wire gear (20) and the core washer (21) Fixedly connected with the core (18), the jack (22) is compressed and connected with the jack spring (23), and the inner teeth (25) are meshed with the jack (22); The turbine (3) is coaxial with the fan (2), and their angular velocities are equal; if the angular velocity of the output shaft of the hydraulic turbine (3) is ω ₁ , the angular velocity of the flywheel device (12) is ω ₂ , and the governor (6) outputs The shaft angular velocity is ω ₃ ; there is a conversion coefficient between the ω ₂ and ω ₃ , and the conversion coefficient is determined by the gear ratio between the gear of the flywheel device (12) and the gear (5). 2. A cooling tower driven and operated by an energy storage power source according to claim 1, characterized in that said intelligent controller (16) is a PID controller.