Cooling device for flywheel energy storage and flywheel energy storage equipment

Abstract

The embodiment of the invention provides a cooling device for flywheel energy storage and flywheel energy storage equipment. The cooling device comprises a cooling water pipe, a water inlet pipe and a water outlet pipe, wherein the cooling water pipe is wound around the periphery of a flywheel, and the section of a pipe opening of the cooling water pipe is square; the water inlet pipe communicates with a water inlet of the cooling water pipe; a water inlet of the water inlet pipe is communicated with an external cooling water source, the water outlet pipe is used for discharging cooling water absorbing heat, and a water outlet of the water outlet pipe is communicated with a water return system. In the invention, the section of the pipe orifice of the cooling water pipe is square, so that the cooling water pipe can be better attached to the outer surface of the flywheel, the contact area with the flywheel is increased, and the heat conduction efficiency is improved. The cooling water pipe is tightly arranged on the outer side of the flywheel in a winding mode, and it is ensured that the flywheel is cooled in all directions.

Description

Technical Field

[0001] Embodiments of the present disclosure belong to the technical field of flywheel energy storage, and particularly relate to a cooling device for flywheel energy storage and a flywheel energy storage device. Background Art

[0002] With the continuous development of flywheel energy storage technology, its applications in fields such as power systems and rail transit are becoming increasingly widespread.

[0003] However, a large amount of heat is generated during the high-speed rotation of the flywheel. If heat cannot be dissipated in a timely and effective manner, the performance and service life of the flywheel will be affected. Traditional cooling methods are difficult to meet the requirements of the flywheel energy storage system for cooling efficiency and uniformity.

[0004] Therefore, a new type of cooling device is needed to solve this problem. Summary of the Invention

[0005] Embodiments of the present disclosure aim to at least solve one of the technical problems existing in the prior art, and provide a cooling device for flywheel energy storage and a flywheel energy storage device.

[0006] In a first aspect of the embodiments of the present disclosure, a cooling device for flywheel energy storage is provided, including: a cooling water pipe wound around the outer periphery of the flywheel and having a square cross-section at the pipe orifice, an inlet pipe communicating with the water inlet of the cooling water pipe, and an outlet pipe communicating with the water outlet of the cooling water pipe;

[0007] The water inlet of the inlet pipe is communicated with an external cooling water source, the outlet pipe is used to discharge the cooling water after absorbing heat, and the water outlet of the outlet pipe is communicated with a return water system.

[0008] Optionally, there are multiple cooling water pipes, and the multiple cooling water pipes are arranged in sequence along the axial direction of the flywheel;

[0009] The inlet pipe is arranged along the axial direction of the flywheel and is respectively communicated with the water inlets of the multiple cooling water pipes, and the outlet pipe is arranged along the axial direction of the flywheel and is respectively communicated with the water outlets of the multiple cooling water pipes.

[0010] Optionally, the multiple cooling water pipes are arranged at equal intervals along the axial direction of the flywheel.

[0011] Optionally, the pipe orifice of the inlet pipe has a square cross-section, and the pipe orifice of the outlet pipe has a square cross-section.

[0012] Optionally, the material of the cooling water pipe includes metal.

[0013] Furthermore, it further includes: a flow regulating valve, which is arranged on the inlet pipe and is used to regulate the flow rate of the cooling water in the inlet pipe.

[0014] Further, it further includes: a temperature sensor disposed on the outlet pipe for real-time monitoring of the water outlet temperature in the outlet pipe.

[0015] In a second aspect of the embodiments of the present disclosure, a flywheel energy storage device is provided, including:

[0016] An energy storage shell;

[0017] A flywheel disposed within the energy storage shell; and, the cooling device described above.

[0018] Further, it further includes: a fixing bracket configured to fix the cooling water pipe to the flywheel.

[0019] Optionally, when the cooling device is provided with the flow regulating valve and the temperature sensor, the flywheel energy storage device further includes: a control unit electrically connected to the flow regulating valve and the temperature sensor respectively.

[0020] The beneficial effects of the embodiments of the present disclosure include:

[0021] In the present invention, the cross-section of the orifice of the cooling water pipe is square, which can better fit the outer surface of the flywheel, increase the contact area with the flywheel, and thus improve the heat conduction efficiency. The cooling water pipes are tightly arranged around the flywheel in a winding manner to ensure all-round cooling of the flywheel. Description of the Drawings

[0022] Figure 1 It is a schematic structural diagram of a flywheel energy storage device according to an embodiment of the present disclosure;

[0023] Figure 2 It is a schematic structural diagram of a structure for flywheel energy storage according to an embodiment of the present disclosure;

[0024] Figure 3 It is a schematic top view structural diagram of a cooling device for flywheel energy storage according to an embodiment of the present disclosure;

[0025] Figure 4 It is a schematic structural diagram of a fly according to an embodiment of the present disclosure.

[0026] In the figure, 10, flywheel energy storage device; 1, cooling water pipe; 2, inlet pipe; 3, outlet pipe; 11, energy storage shell; 12, flywheel. Detailed Embodiments

[0027] To enable those skilled in the art to better understand the technical solutions of the present disclosure, the present disclosure will be further described in detail below with reference to the drawings and specific embodiments.

[0028] The following further describes the implementation manners of the present application in conjunction with the accompanying drawings and embodiments. The detailed descriptions and drawings of the following embodiments are used to exemplarily illustrate the principles of the present application, but cannot be used to limit the scope of the present application, that is, the present application is not limited to the described embodiments. In the description of the present application, it should be noted that unless otherwise stated, the meaning of "a plurality of" is two or more; the orientation or positional relationships indicated by the terms "upper", "lower", "left", "right", "inner", "outer", etc. are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be construed as a limitation of the present application. In addition, the terms "first", "second", etc. are only used for descriptive purposes and cannot be construed as indicating or implying relative importance. "Vertical" is not strictly vertical, but within the allowable error range. "Parallel" is not strictly parallel, but within the allowable error range.

[0029] In the description of the present application, it should also be noted that unless otherwise clearly specified and limited, the terms "mounted", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected, or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0030] As Figures 1-4 shown, a cooling device for flywheel energy storage includes: a cooling water pipe 1 wound around the outer periphery of a flywheel 12 and having a square cross-section at the pipe orifice, a water inlet pipe 2 communicating with the water inlet of the cooling water pipe 1, and a water outlet pipe 3 communicating with the water outlet of the cooling water pipe 1.

[0031] The water inlet of the water inlet pipe 2 is communicated with an external cooling water source, the water outlet pipe 3 is used to discharge the cooling water after absorbing heat, and the water outlet of the water outlet pipe 3 is communicated with a return water system.

[0032] In the present invention, the cross-section of the pipe orifice of the cooling water pipe 1 is square, which can better fit the outer surface of the flywheel 12, increase the contact area with the flywheel 12, and thus improve the heat conduction efficiency. The cooling water pipe 1 is closely arranged on the outside of the flywheel 12 in a winding manner to ensure all-round cooling of the flywheel 12.

[0033] In some embodiments, there are a plurality of the cooling water pipes 1, and the plurality of cooling water pipes 1 are sequentially arranged along the axial direction of the flywheel 12.

[0034] The water inlet pipe 2 is arranged along the axial direction of the flywheel 12 and is respectively communicated with the water inlets of the plurality of cooling water pipes 1, and the water outlet pipe 3 is arranged along the axial direction of the flywheel 12 and is respectively communicated with the water outlets of the plurality of cooling water pipes 1.

[0035] In the present invention, by providing a plurality of cooling water pipes 1, the outer surface of the flywheel 12 can be effectively covered, ensuring effective cooling of the flywheel 12.

[0036] In some embodiments, the plurality of cooling water pipes 1 are arranged at equal intervals along the axial direction of the flywheel 12.

[0037] In the present invention, by arranging the plurality of cooling water pipes 1 at equal intervals, the cooling uniformity of the flywheel 12 can be ensured.

[0038] In some embodiments, the cross-sectional shape of the nozzle of the water inlet pipe 2 is square, and the cross-sectional shape of the nozzle of the water outlet pipe 3 is square.

[0039] In the present invention, by selecting the square water inlet pipe 2 and the square water outlet pipe 3, they can be better adapted and connected to the cooling water pipe 1, ensuring the reliability of the connection.

[0040] In some embodiments, the material of the cooling water pipe 1 includes metal.

[0041] In some embodiments, the metal includes pure copper, copper alloy, aluminum alloy or stainless steel.

[0042] In the present invention, by selecting a metal material with good heat conduction performance, the cooling water pipe 1 and the flywheel 12 can effectively conduct heat, thereby ensuring the cooling efficiency.

[0043] In some embodiments, the cooling device further includes a flow regulating valve, and the flow regulating valve is arranged on the water inlet pipe 2 for regulating the flow rate of the cooling water in the water inlet pipe 2.

[0044] In some embodiments, the cooling device further includes a temperature sensor, and the temperature sensor is arranged on the water outlet pipe 3 for real-time monitoring of the outlet water temperature in the water outlet pipe 3.

[0045] Specifically, the present device is mainly composed of a square cooling water pipe 1 wound around the outer circumference of the flywheel 12, a square water inlet pipe 2 and a square water outlet pipe 3, etc.

[0046] The square cooling water pipe 1 wound and attached to the outer circumference of the flywheel 12 is made of a metal material with good heat conduction performance. Its nozzle cross-sectional shape is square, which can better fit the outer surface of the flywheel 12, increase the contact area with the flywheel 12, and thus improve the heat conduction efficiency. The cooling water pipe 1 is tightly arranged on the outside of the flywheel 12 in a winding manner to ensure all-round cooling of the flywheel 12.

[0047] The square water inlet pipe 2 is connected to an external cooling water source to introduce the cooling water into the square cooling water pipe 1. A flow regulating valve is provided on the water inlet pipe 2 to adjust the flow rate of the cooling water according to actual needs.

[0048] The square outlet pipe 3 is used to discharge the cooling water after absorbing heat. A temperature sensor is installed on the outlet pipe 3 to monitor the outlet water temperature in real time, so as to timely understand the cooling effect and the heat generation situation of the flywheel 12.

[0049] Beneficial effects:

[0050] The design of the square cooling water pipe 1 can better fit the surface of the flywheel 12. Compared with the traditional circular water pipe, it improves the cooling area and cooling efficiency, enables the flywheel 12 to operate within a more stable temperature range, and extends the service life of the flywheel 12.

[0051] Through the cooperation of the flow regulating valve and the temperature sensor, precise control of the cooling process can be achieved. The cooling water flow is automatically adjusted according to the actual heat generation situation of the flywheel 12, saving water resources and energy while ensuring the cooling effect.

[0052] This cooling device has a compact structure and is easy to install. It is applicable to flywheel 12 energy storage systems of various specifications, and has good versatility and practicability.

[0053] Device installation:

[0054] First, according to the size and shape of the flywheel 12, design and manufacture a suitable square cooling water pipe 1 that wraps around the outer circumference of the flywheel 12 to ensure that it can closely fit the outside of the flywheel 12.

[0055] Install the square wound cooling water pipe 1 on the flywheel 12 through a fixed bracket. The fixing method of the fixed bracket is firm and reliable to ensure that the cooling water pipe 1 will not loosen or shift during the operation of the flywheel 12.

[0056] Connect the square inlet pipe 2 and the square outlet pipe 3. The inlet pipe 2 is connected to an external cooling water source, and the outlet pipe 3 can be connected to a return water system or other cooling equipment. Install a flow regulating valve on the inlet pipe 2 and a temperature sensor on the outlet pipe 3 to ensure that the sensor is normally connected to the control system.

[0057] Cooling process:

[0058] Start the external cooling water source, and the cooling water enters the square cooling water pipe 1 through the square inlet pipe 2. According to the initial temperature and operating conditions of the flywheel 12, adjust the flow of the cooling water through the flow regulating valve so that the cooling water flows at a suitable flow rate in the cooling water pipe 1.

[0059] The heat generated by the flywheel 12 during operation is transferred to the square cooling water pipe 1 through heat conduction. The cooling water absorbs heat and its temperature rises, and then is discharged through the square outlet pipe 3. The temperature sensor monitors the outlet water temperature in real time and transmits the signal to the control system.

[0060] The control unit automatically adjusts the opening degree of the flow regulating valve according to the change of the outlet water temperature, thereby adjusting the cooling water flow rate. When the outlet water temperature is too high, the opening degree of the flow regulating valve is increased to increase the cooling water flow rate and enhance the cooling effect. When the outlet water temperature is within a reasonable range, the flow rate is kept stable to achieve the purpose of energy saving.

[0061] Reference Figure 1 and Figure 4 , in the second aspect of the embodiments of the present disclosure, a flywheel 12 energy storage device 10 is provided. The flywheel energy storage device 10 includes an energy storage shell 11, a flywheel 12, and the cooling device described above. The flywheel 12 is disposed inside the energy storage shell 11.

[0062] In some embodiments, the flywheel energy storage device 10 further includes a fixing bracket configured to fix the cooling water pipe 1 to the flywheel 12.

[0063] In some embodiments, when the cooling device is provided with the flow regulating valve and the temperature sensor, the flywheel energy storage device 10 further includes a control unit, and the control unit is electrically connected to the flow regulating valve and the temperature sensor respectively.

[0064] It can be understood that the above embodiments are merely exemplary embodiments adopted to illustrate the principle of the present disclosure. However, the present disclosure is not limited thereto. For those of ordinary skill in the art, various modifications and improvements can be made without departing from the spirit and essence of the present disclosure, and these modifications and improvements are also regarded as the protection scope of the present disclosure.

Claims

1. A cooling device for flywheel energy storage, characterized in that, Comprising: Cooling water pipes wound around the outer periphery of the flywheel and having a square cross-section at the pipe orifice, an inlet pipe communicating with the water inlet of the cooling water pipes, and an outlet pipe communicating with the water outlet of the cooling water pipes; The water inlet of the inlet pipe is communicated with an external cooling water source, the outlet pipe is used for discharging the cooling water after absorbing heat, and the water outlet of the outlet pipe is communicated with a return water system.

2. The cooling device according to claim 1, characterized in that, There are multiple cooling water pipes, and the multiple cooling water pipes are sequentially arranged along the axial direction of the flywheel; The inlet pipe is arranged along the axial direction of the flywheel and is respectively communicated with the water inlets of the multiple cooling water pipes, and the outlet pipe is arranged along the axial direction of the flywheel and is respectively communicated with the water outlets of the multiple cooling water pipes.

3. The cooling device according to claim 2, characterized in that, The multiple cooling water pipes are arranged at equal intervals along the axial direction of the flywheel.

4. The cooling device according to claim 1, characterized in that, The orifice cross-section of the inlet pipe is square, and the orifice cross-section of the outlet pipe is square.

5. The cooling device according to claim 1, characterized in that, The material of the cooling water pipe includes metal.

6. The cooling device according to claim 1, characterized in that, Further comprising: A flow regulating valve, which is arranged on the inlet pipe and is used for regulating the flow rate of the cooling water in the inlet pipe.

7. The cooling device according to claim 1, characterized in that, Further comprising: A temperature sensor, which is arranged on the outlet pipe and is used for monitoring the outlet water temperature in the outlet pipe in real time.

8. A flywheel energy storage device, characterized in that, Comprising: An energy storage shell; A flywheel, which is arranged inside the energy storage shell; And, the cooling device according to any one of claims 1-7.

9. The flywheel energy storage device according to claim 8, characterized in that, Further comprising: A fixing bracket configured to fix the cooling water pipe to the flywheel.

10. The flywheel energy storage device according to claim 8, characterized in that, When the cooling device is provided with the flow regulating valve and the temperature sensor, the flywheel energy storage device further comprises: a control unit, and the control unit is electrically connected to the flow regulating valve and the temperature sensor respectively.

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