Rail type gravity energy storage external power station

Abstract

The utility model discloses a rail type gravity energy storage external power station which comprises a power generation device, a rail train is arranged on a rail, and driving plates are arranged on the two sides of the rail train. The power generation device comprises a supporting platform, a supporting frame arranged on the upper side of the supporting platform in a sliding fit mode, a power generator arranged on the upper side of the supporting frame and a friction wheel in transmission connection with the input end of the power generator, the output end of the power generator is electrically connected into the storage battery energy storage control cabinet, and the supporting platform is further provided with a tensioning device connected with the supporting frame. The rail train travels from the upper portion to the lower portion of the rail, and the friction wheels are driven by the tensioning device to press the driving plate on the rail train through the power generation device. Through the external power station, when the train descends, the driving plate can drive the friction wheel to rotate, so that the generator is driven, gravitational potential energy is converted into mechanical energy and then converted into electric energy to be stored, the positions of the friction wheel and the driving plate can be accurately regulated and controlled, and power is effectively transmitted to the generator to generate electricity.

Description

Technical Field

[0001] The utility model belongs to the field of gravity energy storage power generation, and specifically relates to a track-type gravity energy storage external power station. Background Art

[0002] With the rapid development of my country's national economy, the types and numbers of electrical equipment have increased dramatically, causing the peak-to-valley difference of the power grid to continue to increase, which not only aggravates the difficulty of peak regulation of the power grid, but also brings huge challenges to the stability of the power grid. The energy storage system can store energy when the power grid has excess energy and release energy when the power grid needs it. Gravity energy storage, as a new type of long-term and large-capacity energy storage method, has the advantages of high safety, high efficiency, long life, and short construction period. The basic process of energy storage is: using surplus electricity to drive the motor to lift heavy objects, which is converted into high-level potential energy storage; releasing the heavy objects to generate electricity. Due to its large energy storage capacity, long output time, and low unit energy cost, it can accurately track the grid dispatching instructions.

[0003] In gravity energy storage, when stored energy needs to be released during peak electricity demand, the gravity energy storage blocks are returned to a lower track level via a rail train, where their gravitational potential energy is converted into kinetic energy, which is then converted into electricity or other forms of energy. This technology utilizes rail trains to design a gravity energy storage power generation device. To facilitate maintenance of the power station, an external track-mounted power station was also developed.

[0004] In view of this, the present utility model is proposed. Utility Model Content

[0005] The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art and provide a track-type gravity energy storage external power station, which solves the problems raised in the above-mentioned background technology.

[0006] In order to solve the above technical problems, the basic concept of the technical solution adopted by the present invention is:

[0007] A track-type gravity energy storage external power station, comprising: two sets of power generation devices symmetrically arranged on both sides of a track, a track train is arranged on the track and travels from the upper track to the lower track, and drive plates are arranged on both sides of the track train;

[0008] The power generation device includes a support platform, a support frame slidingly fitted on the upper side of the support platform, a generator mounted on the upper side of the support frame, and a friction wheel drivingly connected to the input end of the generator. The output end of the generator is electrically connected to the battery energy storage control cabinet. The support platform is also provided with a tensioning device connected to the support frame.

[0009] The rail train travels downward from the track and passes the power generation device. The tensioning device drives the friction wheel to press against the driving plate on the rail train.

[0010] Furthermore, the battery energy storage control cabinet includes an AC-DC converter, a DC chopper, a battery pack and a main controller. The output end of the generator is connected in series to the AC-DC converter, the DC chopper and the battery pack in sequence. The generator, AC-DC converter, DC chopper and battery pack are all electrically connected to the main controller.

[0011] Furthermore, the tensioning device includes a support block installed on the upper side of the support platform, and a linear telescopic driving member installed on the support block and with an output end fixedly connected to the support frame.

[0012] Furthermore, the linear telescopic driving member is an electric push rod, a hydraulic rod or a cylinder.

[0013] Furthermore, two slide rails are installed on the upper side of the support platform, and a slider fixedly connected to the bottom of the support frame is slidably matched on the upper side of the slide rails.

[0014] Furthermore, the connecting axes of the two sets of friction wheels of the power generation devices are perpendicular to the track.

[0015] Furthermore, the output shaft of the friction wheel is connected to the input shaft of the generator through a coupling.

[0016] After adopting the above technical solution, the present invention has the following beneficial effects compared with the prior art. Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described below at the same time:

[0017] The utility model can place two power generation devices externally on both sides of parallel tracks, making the power generation devices easy to inspect and adjust, and the operating status of the power generation devices is clear at a glance. It is suitable for the environment of rail gravity energy storage projects. The power generation device of the present invention includes a support platform, a support frame slidingly fitted on the upper side of the support platform, a generator installed on the upper side of the support frame, a friction wheel transmission-connected to the input end of the generator, and the output end of the generator is electrically connected to the battery energy storage control cabinet. The support platform is also provided with a tensioning device connected to the support frame. When the rail train travels from the top of the track to the bottom, the driving plates on both sides of the rail train squeeze the friction wheels. Under the action of the tensioning device, the friction wheels maintain tension with the driving plates, thereby driving the friction wheels through the driving plates, and then driving the generator, so that the gravitational potential energy is converted into mechanical energy, and then the mechanical energy is converted into electrical energy through the generator. The converted electrical energy is adjusted and stored by the battery energy storage control cabinet. The external power station can accurately control the position of the friction wheel and the generator, thereby better cooperating with the driving plate of the rail train and effectively transmitting power to the generator for power generation. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The drawings described below are only some embodiments. A person skilled in the art can derive other drawings based on these drawings without inventive effort. In the drawings:

[0019] Figure 1 This is a structural diagram of a gravity energy storage external power station.

[0020] Figure 2 This is a schematic diagram of the generator's power generation and energy storage principle structure.

[0021] In the accompanying drawings, the components represented by the reference numerals are as follows:

[0022] Battery energy storage control cabinet 1, power generation device 2, support platform 204, support frame 201, generator 202, friction wheel 203, track 3, tensioning device 4, support block 401, linear telescopic drive member 402, slide rail 5, slider 6, rail train 7, drive plate 8, flatbed carriage 9, loading plate 10, wheel set 11, coupling 12.

[0023] It should be noted that these drawings and textual descriptions are not intended to limit the conceptual scope of the present invention in any way, but rather to illustrate the concept of the present invention for those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0024] The present invention will now be described in further detail with reference to the accompanying drawings.

[0025] See also Figure 1 As shown, in this embodiment, a rail-type gravity energy storage external power station is provided, including: two groups of power generation devices 2 symmetrically arranged on both sides of the track 3, and a rail train 7 is arranged on the track 3, which travels from the top of the track 3 to the bottom of the track 3, wherein the track 3 is arranged at an angle. When generating electricity, the rail train 7 is loaded with a gravity block and travels from the top of the track 3 to the bottom, converting the gravitational potential energy into mechanical kinetic energy.

[0026] The rail train 7 is composed of multiple flatbed carriages 9 connected by universal joints. Each flatbed carriage 9 includes a frame, a loading plate 10 arranged on the frame, wheel sets 11 installed on both sides of the lower side of the frame, and drive plates 8 arranged on both sides of the loading plate 10. One end between adjacent drive plates 8 is provided with an adaptive notch to avoid collision and interference between the front and rear flatbed carriages 9 drive plates 8 when the rail train 7 climbs a slope or turns.

[0027] The power generation device includes a support platform 204 and a power generation assembly mounted on the support platform 204. The power generation assembly comprises a support frame 201 that slides onto the upper side of the support platform 204, a generator 202 mounted on the upper side of the support frame 201, and a friction wheel 203 drivingly connected to the input end of the generator 202. The output end of the generator 202 is electrically connected to the battery energy storage control cabinet 1. The support platform 204 is also equipped with a tensioning device connected to the support frame 201. The output shaft of the friction wheel 203 is connected to the input shaft of the generator 202 via a coupling 12.

[0028] The rail train 7 travels downward from the track 3 and passes the power generation device. The tensioning device drives the friction wheel 203 to press against the driving plate 8 on the rail train 7.

[0029] In this embodiment, the two power generation devices 2 are placed on both sides of the track 3, so that the power generation devices 2 are easy to inspect and adjust, and the operating status of the power generation devices 2 is clear at a glance, which is suitable for the environment of the track gravity energy storage project. At the same time, the tensioning device 4 in this device can push the friction wheel 203 to be pressed against the drive plate 8 of the track train 7. When the track train 7 travels from top to bottom, the drive plate 8 can drive the friction wheel 203 to rotate through friction, thereby driving the generator 202, so that the gravitational potential energy is converted into mechanical energy, and then the mechanical energy is converted into electrical energy through the generator 202, and the converted electrical energy is adjusted and stored by the battery energy storage control cabinet 1. The tensioning force between the friction wheel 203 and the drive plate 8 is adjusted by the tensioning device 4, so that the friction wheel 203 can cooperate with the drive plate 8 of the track train 7, thereby effectively transmitting power to the generator 202 for power generation.

[0030] In this embodiment, the battery energy storage control cabinet 1 is arranged on one side of the power generation device 2. Figure 2 As shown, it is equipped with an AC-DC converter, a DC chopper, a battery pack, and a master controller. The output end of generator 202 is connected in series to the AC-DC converter, DC chopper, and battery pack. Generator 202, AC-DC converter, DC chopper, and battery pack are all electrically connected to the master controller. When generator 202 is generating electricity, the master controller controls the operation of generator 202. Generator 202 converts the mechanical kinetic energy transmitted by friction wheel 203 into alternating current, which is then converted into direct current via the AC-DC converter. The DC chopper then stably stores the direct current in the battery pack. Using a generator to convert kinetic energy into electrical energy is a common method of power generation, and the AC-DC converter and DC chopper are both common circuit components.

[0031] In this embodiment, the support platform 204 is used to carry the above-mentioned components. The generator 202 uses the power transmitted by the rail train 7 to generate electricity. The axial direction of the friction wheel 203 is perpendicular to the track 3 and can rotate in the horizontal plane. The drive plate 8 on the rail train 7 will rub the friction wheel 203 and transmit power to the generator 202, thereby realizing power generation.

[0032] like Figure 1 As shown, the tensioning device 4 of this embodiment includes a support block 401 mounted on the upper side of the support platform 1, and a linear telescopic drive member 402 mounted on the support block 401 and with its output end fixedly connected to the support frame 201; the linear telescopic drive member 402 is an electric push rod, a hydraulic rod or a cylinder; two slide rails 5 are mounted on the upper side of the support platform 1, and a slider 6 fixedly connected to the bottom of the support frame 201 is slidably engaged on the upper side of the slide rails 5;

[0033] Among them, the linear telescopic drive component 402 is one of an electric push rod, a hydraulic rod or a cylinder, which drives the support frame 201 and the generator 202 installed on the support frame 201, and the friction wheel 203 to move back and forth through the relative movement of the slider 6 on the slide rail 5, so that the friction wheel 203 maintains contact with the drive plate 8 on the rail train 7 and has a certain clamping force. At the same time, the linear telescopic drive component 402 can adjust the clamping force between the friction wheel 203 and the drive plate 8 by adjusting the output force.

[0034] Working principle:

[0035] When entering the power station for work, the rail train 7 travels from the top of the track 3 to the bottom. When the rail train 7 reaches the power station, the driving plate on the rail train 7 squeezes the friction wheel 203. The pressing force given by the telescopic end of its linear telescopic driving member 402 presses the friction wheel 203 and the driving plate 8 on the rail train 7 through the support frame 201. The rail train 7 travels downward, causing the driving plate 8 to drive the friction wheel 203 to rotate, thereby driving the generator 202, so that the gravitational potential energy is converted into mechanical energy, and then converted into electrical energy to be stored in the battery energy storage control cabinet 1.

[0036] The present invention is not limited to the above-described embodiments. Any structural changes made under the guidance of the present invention should be understood by anyone. Any technical solution that is the same or similar to the present invention falls within the scope of protection of the present invention. The technology, shape, and structure not described in detail in the present invention are all known technologies.

Claims

1. A track-type gravity energy storage external power station, characterized in that: include: Two sets of power generation devices are symmetrically arranged on both sides of the track. A rail train is arranged on the track and travels from the upper track to the lower track. Drive plates are arranged on both sides of the rail train. The power generation device includes a support platform, a support frame slidingly fitted on the upper side of the support platform, a generator mounted on the upper side of the support frame, and a friction wheel drivingly connected to the input end of the generator. The output end of the generator is electrically connected to the battery energy storage control cabinet. The support platform is also provided with a tensioning device connected to the support frame. The rail train travels downward from the track and passes the power generation device. The tensioning device drives the friction wheel to press against the driving plate on the rail train.

2. A rail-type gravity energy storage external power station according to claim 1, characterized in that: The battery energy storage control cabinet includes an AC-DC converter, a DC chopper, a battery pack and a main controller. The output end of the generator is connected in series to the AC-DC converter, the DC chopper and the battery pack in sequence. The generator, AC-DC converter, DC chopper and battery pack are all electrically connected to the main controller.

3. A rail-type gravity energy storage external power station according to claim 1, characterized in that: The tensioning device comprises a support block installed on the upper side of the support platform, and a linear telescopic driving member installed on the support block and with an output end fixedly connected to the support frame.

4. A rail-type gravity energy storage external power station according to claim 3, characterized in that: The linear telescopic drive member is an electric push rod, a hydraulic rod or a cylinder.

5. A rail-type gravity energy storage external power station according to claim 4, characterized in that: Two slide rails are installed on the upper side of the support platform, and a slider fixedly connected to the bottom of the support frame is slidably matched on the upper side of the slide rails.

6. The rail-type gravity energy storage external power station according to claim 1, characterized in that: The connecting axes of the two sets of friction wheels of the power generation devices are perpendicular to the track.

7. The rail-type gravity energy storage external power station according to claim 1, characterized in that: The output shaft of the friction wheel is connected to the input shaft of the generator through a coupling.

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