CN211448888U

CN211448888U - Mechanical energy storage wind power generation device

Info

Publication number: CN211448888U
Application number: CN201921529448.7U
Authority: CN
Inventors: 王伟国
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-09-06
Filing date: 2019-09-06
Publication date: 2020-09-08
Anticipated expiration: 2029-09-06

Abstract

The utility model discloses a mechanical energy storage wind power generation set is continuous, invariable, controllable energy output with intermittent type, wave nature, random wind energy coupling to realize the mechanical device of energy storage and electricity generation in step. The utility model discloses can carry out moment coupling, storage with intermittent type nature energy to change into invariable moment output and give the generator, not only simplify control system, eliminate secondary chemical pollution, reduce cost, improve wind power generation, the development and the application of energy such as wave energy electricity generation, tidal energy can be used for wind power generation, wave energy electricity generation, tidal energy.

Description

Mechanical energy storage wind power generation device

Technical Field

The utility model belongs to a mechanical energy storage wind power generation set, in particular to convert nature intermittent type nature energy into continuity energy to the mechanical device who carries out energy storage and electricity generation in step is applied to wind power generation and development to nature intermittent type nature energy.

Background

At present, most of known natural energy, such as wind energy, wave energy, tidal energy and the like, is intermittent, fluctuating and random nonlinear energy, is difficult to directly utilize, needs to be converted into continuous, stable and controllable linear energy for utilization through an intermediate energy collecting and storing process, and energy storage technologies for natural energy power generation are divided into mechanical energy storage (pumped storage, dam-building water storage, compressed air, flywheel energy storage), electromagnetic energy storage (super capacitor, superconducting energy storage), chemical energy storage (chemical storage battery, liquid flow energy storage battery) and thermal energy storage, and have the problems of low utilization rate, high cost, short service life, secondary pollution and the like.

The small wind-driven generator converts wind energy into electric energy through an impeller, a speed change mechanism and a generator, stores the electric energy into a storage battery, and modulates the electric energy into a 50Hz power frequency power supply through a direct current/alternating current inverter to supply the power frequency power supply to a terminal user.

The large and medium-sized wind driven generator mainly has two forms, one of which is that a fan impeller is of a fixed-pitch stall regulation type, belongs to a constant-speed machine type, generally uses a synchronous motor or a squirrel-cage asynchronous motor as a generator, and a wind turbine controlled by the fixed-pitch stall keeps the rotating speed of the generator at a constant value, so that the rotating frequency of a stator magnetic field after the wind turbine generator set is connected to the grid is equal to the frequency of a power grid, the variation range of a rotor and the impeller is small, and the efficiency of capturing wind energy is. Secondly, the fan impeller is of a variable speed and variable pitch type, a double-fed motor or a permanent magnet synchronous motor is generally adopted, the rotating speed of the impeller can change in a wider range along with the change of the wind speed by a method of combining a speed regulator and variable pitch control, and the optimal tip speed ratio is kept to operate, so that the energy capture efficiency is maximized. The electric energy generated by the generator is adjusted by the converter to be changed into electric energy with the same frequency, phase and amplitude as the power grid and transmitted to the power grid. In contrast, variable speed wind generators offer advantages, but increase the complexity of the control system and the cost of manufacture.

In the wave energy power generation process, the collected intermittent mechanical energy needs to be converted into pressure energy or gravitational potential energy through an energy storage facility, and then power generation or seawater desalination and the like are effectively utilized, so that the energy storage facility investment is high, and the construction difficulty is high.

In order to overcome the defects in the process of utilizing the nonlinear energy in the nature, the utility model provides a mechanical device which couples and stores the torque of the intermittent, fluctuating and random nonlinear energy and converts the torque into the torque output of the continuous, stable and controllable linear energy so as to improve the utilization rate of the energy.

Disclosure of Invention

A mechanical energy storage wind power generation device comprises a wind impeller, a nonlinear moment input unit, a moment coupling unit, a mechanical energy storage unit, a linear moment output unit and a generator, wherein the moment coupling unit and the energy storage unit adopt a planetary gear mechanism, a fan impeller converts fluctuating, random and intermittent wind energy into nonlinear moment as input, and after the moment coupling and the energy storage, the linear moment of continuous, stable and controllable linear energy is output and provided for the generator to generate power, and the electric energy with constant frequency is output outwards.

The nonlinear moment collected by the wind power impeller and the linear moment required by the generator are respectively connected with a gear ring and a sun wheel of the planetary gear mechanism, a planetary gear carrier is fixedly connected with the constant force wheel and rotates around the main shaft, and the input nonlinear moment is coupled into linear moment output through the planetary gear carrier and the planetary gear.

Compared with the prior art, the utility model discloses a planetary gear no longer is the mechanism of variable speed transmission moment, but the coupling of non-linear moment, linear moment and the mechanism of energy storage dual function.

Compared with the prior art, the beneficial effects of the utility model are that: the coupling of the nonlinearity and the linear torque is realized by a mechanical structure, the nonlinear energy utilization rate is improved, the defects of secondary pollution and short service life caused by using a chemical storage battery as energy storage are overcome, a complex control system of the double-fed motor is simplified, and the cost of a power generation device is reduced.

Drawings

Fig. 1 is a schematic diagram of the principle structure of the present invention, in fig. 1, a wind turbine (1) transmits the non-linear energy torque to a rotating shaft (4) through a rotating shaft (2) and a positioning bearing (3), the rotating shaft (4) transmits the non-linear energy torque to a gear (6) through a positioning bearing (5), the gear (6) is engaged with a gear (7), the gear (7) is connected with a gear ring (11) through a connecting piece (8), the gear ring (11) is positioned and installed on a rack (9) through a bearing (10), the internal teeth of the gear ring (11) are engaged with a planetary gear (12), the planetary gear (12) is simultaneously engaged with a sun gear (22), the sun gear (22) is fixedly connected with a gear (23), the gear (23) is engaged with a gear (24), the gear (24) is connected through a transmission shaft (27), and the transmission shaft (27) is positioned and installed on a rack (25) through a bearing; the planetary gear (12) is positioned on a planet carrier (15) through a bearing (13) and a rotating shaft (14), the planet carrier (15) is fixedly connected with a constant force wheel (16), the constant force wheel (16) is positioned and installed on a central shaft (18) through a bearing (17), and the central shaft (18) is fixed on a rack; a flexible rope (19) is wound in a groove on the circumference of the excircle of the constant force wheel (16), a constant force is applied to the tail end of the rope (19), the constant force is from a suspended heavy object (20) and acts on the planet carrier (15) together to form a constant moment; the constant force wheel (16), the planet gear carrier (15), the planet wheel rotating shaft (14), the planet wheel bearing (13) and the planet gear (12) form a whole and rotate around the central shaft (18) through the bearing (17) together.

Detailed Description

The following description of the embodiments of the present invention will be made with reference to the accompanying drawings 1

The non-linear torque, the linear torque and the constant torque formed by the constant force wheel to the planet carrier are interacted and coupled, wherein the directions of the non-linear torque and the linear torque are the same, the direction of the constant force wheel torque is opposite to that of the non-linear torque and the linear torque, and when the device works, the following three instantaneous working conditions exist among the non-linear torque instantaneous value of the wind power impeller, the constant torque of the planet carrier and the linear torque of the generator:

firstly, when the sum of the nonlinear moment instantaneous value of the wind power impeller (1) and the linear moment required by the generator (29) is equal to the constant moment of the planet wheel carrier, the planet wheel carrier (15) and the constant force wheel (16) are in a relative balance state;

secondly, when the sum of the nonlinear moment instantaneous value of the wind power impeller (1) and the linear moment required by the generator (29) is larger than the constant moment of the planet wheel carrier, the redundant moment can be absorbed by increasing the potential energy of the constant force wheel (16) so as to maintain the linear moment required by the generator (29);

thirdly, when the sum of the nonlinear moment instantaneous value of the wind power impeller (1) and the linear moment required by the generator (29) is smaller than the constant moment of the planet wheel carrier, the potential energy stored on the constant force wheel (16) is released to maintain the linear moment required by the generator (29);

in fig. 1, the non-linear torque of the wind impeller (1) is connected as input to the drive shaft (4), and the linear torque required by the generator (29) is connected to the drive shaft (27), which can be reversed.

The wind power generator device shown in the attached figure 1 is installed at a high position through a support frame (21), so that more wind power can be absorbed, the constant force of the embodiment is from a suspended heavy object (20), and the applied constant force can be gravity, elastic force, electromagnetic force, fluid pressure and the like.

Claims

1. The utility model provides a mechanical energy storage wind power generation set, includes four units of nonlinear moment input, moment coupling, mechanical energy storage, linear moment output and the generator of wind-force impeller and constitutes, moment coupling unit wherein adopts planetary gear mechanism, its characterized in that: the planet carrier (15) is fixedly connected with the constant force wheel (16) and rotates around the central shaft (18) together, the central shaft (18) is fixed on the frame, the groove on the constant force wheel (16) is wound with the flexible rope (19), and the constant force applied at the tail end of the rope (19) and the constant force wheel (16) form a constant moment and act on the planet carrier (15) together.

2. The mechanical energy storage wind power generation device of claim 1, wherein the input shaft and the output shaft corresponding to the nonlinear torque input and the linear torque output can be exchanged.

3. A mechanical energy storage wind power plant according to claim 1, characterized in that the constant force wheel (16), the planet wheel carrier (15), the planet wheel spindle (14), the planet wheel bearing (13), and the planet wheel (12) form a whole, and rotate together around the central shaft (18) through the bearing (17).

4. The mechanical energy storage wind power generation device according to claim 1, wherein the constant force applied by the end of the flexible rope (19) can be gravity, elastic force, electromagnetic force, fluid pressure.