Impact turbine energy storage system

Abstract

The invention relates to an energy storage system of an impulse turbine, belongs to the technical field of energy storage, and solves the technical problem that the existing single energy storage unit is inconvenient to use. The impact type water turbine energy storage system comprises a water turbine set, an energy storage unit and a transmission part. The water turbine set is used for converting potential energy into rotating kinetic energy. The multiple energy storage units are used for converting kinetic energy of the hydraulic turbine set into other energy for storage, the multiple energy storage units are arranged in the first direction, and the first direction is in the horizontal direction; one end of the transmission part is in transmission connection with the hydraulic turbine set; the transmission part is in transmission connection with the energy storage unit. Therefore, according to the impulse turbine energy storage system, the multiple energy storage units are used for storing energy, so that the impulse turbine energy storage system is suitable for different energy storage requirements, energy storage and energy release of other energy storage units are not affected when a single energy storage unit breaks down, and the energy storage system can be adjusted and used more flexibly.

Description

Technical Field

[0001] The invention belongs to the technical field of energy storage, and in particular relates to an impulse turbine energy storage system. Background Art

[0002] Energy storage technology refers to a technology that stores energy through a medium or device and releases it when needed. Energy storage technology can be divided into mechanical energy storage, electrochemical energy storage, thermal energy storage and other types according to different media. The application of energy storage technology can solve the problem of asynchronous energy production and use, and can also break through the limitations of environmental, geographical location and other factors.

[0003] Pumped storage is the most widely used energy storage technology at present. The turbine unit is an important equipment in the hydropower station, which uses the water level difference to generate electricity. When there is excess electricity in the system, the pumped storage unit drives the turbine unit to pump water from downstream into the reservoir, converting the electrical energy into water potential energy and storing it.

[0004] However, traditional pumped storage systems often use a single energy storage unit in their energy storage unit configuration. When the power system's demand for energy storage and release changes, a single energy storage unit is often difficult to adjust, thus affecting the flexibility of the entire system. Summary of the invention

[0005] The invention provides an impulse turbine energy storage system, which is used to solve the technical problem that the current single energy storage unit is inconvenient to use.

[0006] The present invention is implemented through the following technical scheme: an impulse turbine energy storage system, comprising a turbine unit, an energy storage unit and a transmission member, wherein the turbine unit is used to convert potential energy into rotational kinetic energy; multiple energy storage units are used to convert the kinetic energy of the turbine unit into other energy forms for storage, and the multiple energy storage units are arranged along the first direction, and the first direction is along the horizontal direction; one end of the transmission member is transmission-connected to the turbine unit, the transmission member is transmission-connected to the energy storage unit, and the transmission member is transmission-connected to multiple energy storage units in sequence along the first direction to drive the energy storage unit to store energy.

[0007] Optionally, the transmission member includes a screw, a moving block, a bearing and a first transmission unit, one end of the screw is transmission-connected to the turbine unit, and the axial direction of the screw is parallel to the first direction; the moving block is rotatably installed on the screw, and the screw rotates to drive the moving block to move along the axial direction of the screw; the bearing is installed on the moving block, and the movement of the moving block drives the bearing to move along the axial direction of the screw; the first transmission wheel is rotatably installed on the bearing, and the first transmission wheel is transmission-connected to the energy storage unit to drive the energy storage unit to store energy.

[0008] Optionally, the transmission member further includes a second transmission wheel, which is in transmission connection with the water turbine unit and the first transmission wheel, and the second transmission wheel rotates to drive the first transmission wheel to rotate.

[0009] Optionally, the energy storage unit includes a third transmission wheel, which is transmission-connected to the first transmission wheel, and the first transmission wheel rotates to drive the third transmission wheel to rotate; the energy storage weight is transmission-connected to the third transmission wheel, and the third transmission wheel rotates to drive the energy storage weight to move upward along the direction of gravity to convert kinetic energy into gravitational potential energy for storage.

[0010] Optionally, the energy storage unit also includes a drum, a connecting rope and a pulley, wherein the drum is connected to the third transmission wheel, and the third transmission wheel rotates to drive the drum to rotate; one end of the connecting rope is wound around the drum, and the other end is installed on the energy storage weight, and the drum rotates to drive the energy storage weight to move; the connecting rope abuts the pulley.

[0011] Optionally, it further includes a first limit switch, which is located on one side of the energy storage weight. When the energy storage weight abuts against the first limit switch, the drum stops rotating, the energy storage weight stops moving, and energy storage stops.

[0012] Optionally, a second limit switch is further included, which is located on the side of the energy storage weight away from the first limit switch. When the energy storage weight abuts against the second limit switch, the drum stops rotating, the energy storage weight stops moving, and stops releasing energy.

[0013] Optionally, the turbine unit includes a spray needle and a turbine bucket, the spray needle is connected to a water source; the turbine bucket, water flows through the spray needle to drive the turbine bucket to rotate, and the impact turbine bucket rotates to convert potential energy into kinetic energy.

[0014] Optionally, a fixing rod is further included, the moving block is provided with a fixing hole, the fixing rod is passed through the fixing hole, the axial direction of the fixing rod is parallel to the axial direction of the lead screw, and the fixing rod is used to prevent the moving block from rotating synchronously with the lead screw.

[0015] Optionally, the first transmission wheel is separated from the third transmission wheel of any one of the energy storage units, the energy storage weight is in contact with the first limit switch, and the energy storage weight stops storing energy.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] An impulse turbine energy storage system provided by the present invention includes a turbine unit, an energy storage unit and a transmission member, wherein the turbine unit is used to convert potential energy into rotational kinetic energy; multiple energy storage units are used to convert the kinetic energy of the turbine unit into other energy forms for storage, and the multiple energy storage units are arranged along a first direction, and the first direction is along a horizontal direction; one end of the transmission member is transmission-connected to the turbine unit, the transmission member is transmission-connected to the energy storage unit, and the transmission member is transmission-connected to the multiple energy storage units in sequence along the first direction to drive the energy storage units to store energy.

[0018] Through the above structure, when the impulse turbine energy storage system provided by the present invention is storing energy, the water flow drives the turbine unit to rotate, the turbine unit converts the potential energy of water into the kinetic energy of rotation, drives the transmission member to move along the first direction, sequentially connects with multiple energy storage units in turn, and drives the energy storage unit to store energy. Therefore, the impulse turbine energy storage system stores energy by using multiple energy storage units to facilitate different energy storage needs. When a single energy storage unit fails, it does not affect the energy storage and release of other energy storage units, so that the energy storage system can be adjusted and used more flexibly. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0020] Figure 1 It is a structural schematic diagram of an impulse turbine energy storage system provided by the present invention;

[0021] Figure 2 is a schematic structural diagram of an energy storage unit in an embodiment of the present invention;

[0022] Figure 3 Schematic diagram of the structure of the transmission member in the embodiment of the present invention.

[0023] In the figure:

[0024] 1-turbine unit; 11-spray needle; 12-turbine bucket;

[0025] 2-energy storage unit; 21-third transmission wheel; 22-energy storage weight; 23-drum; 24-connecting rope; 25-pulley;

[0026] 3-transmission member; 31-screw; 32-moving block; 33-bearing; 34-first transmission wheel; 35-second transmission wheel;

[0027] 4-first limit switch; 5-second limit switch; 6-fixing rod; 7-generator set. DETAILED DESCRIPTION

[0028] In the description of the present application, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0029] The terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, unless otherwise specified, "plurality" means two or more.

[0030] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "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 a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0031] To make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be described in detail below. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other implementation methods obtained by ordinary technicians in this field without creative work belong to the scope of protection of the present invention.

[0032] Example

[0033] The present invention provides an impulse turbine energy storage system to solve the technical problem that a single energy storage unit is inconvenient to use. The impulse turbine energy storage system comprises a turbine unit 1, an energy storage unit 2 and a transmission member 3, wherein:

[0034] The water turbine unit 1 is driven by water flow. When the water flows through the water turbine unit 1 , the water flow drives the blades of the water turbine unit 1 to rotate, thereby converting the potential energy of the water into kinetic energy for the rotation of the water turbine unit 1 .

[0035] There are a plurality of energy storage units 2, which are used to convert kinetic energy into other energy forms for storage. The energy storage unit 2 can be a gravity energy storage device, a hydraulic energy storage device, or other forms of energy storage devices, which are used to convert the received kinetic energy into a storable energy form. The plurality of energy storage units 2 are arranged in sequence along a first direction, and the first direction is along an arbitrary horizontal direction, so as to facilitate driving the energy storage unit 2 and then storing energy. The energy stored in the energy storage unit 2 can be released during peak hours to drive the generator to generate electricity and provide additional power support for the power system. The energy storage unit 2 can be increased or decreased according to actual needs, thereby realizing flexible adjustment of the energy capacity of the environment that is not suitable for use, so as to adapt to different energy storage needs. By using multiple energy storage units 2 to store energy, when a single energy storage unit 2 fails, it will not affect the energy storage and release of other energy storage units 2, so that the energy storage system can be more flexibly adjusted and used.

[0036] One end of the transmission member 3 is transmission-connected to the turbine unit 1, and the turbine unit 1 can drive the transmission member 3 to rotate synchronously when it rotates. The transmission member 3 is transmission-connected to the energy storage unit 2, and the other end is transmission-connected to the energy storage unit 2. The transmission member 3 is transmission-connected to multiple energy storage units 2 in sequence along a first direction, and the transmission method can be gear transmission, friction wheel transmission, chain transmission, etc. When the turbine unit 1 rotates, the transmission member 3 rotates accordingly and drives each energy storage unit 2 to work in sequence, so as to drive the energy storage unit 2 to store energy.

[0037] Through the above structure, when the impulse turbine energy storage system provided by the present invention is storing energy, the water flow drives the turbine unit 1 to rotate, the turbine unit 1 converts the potential energy of water into the kinetic energy of rotation, drives the transmission member 3 to move along the first direction, sequentially connects with the multiple energy storage units 2 in sequence, and drives the energy storage units 2 to store energy. Therefore, the impulse turbine energy storage system stores energy by using multiple energy storage units 2, so as to be suitable for different energy storage needs, and when a single energy storage unit 2 fails, it does not affect the energy storage and release of other energy storage units 2, so that the energy storage system can be adjusted and used more flexibly.

[0038] An optional implementation of this embodiment is as follows: the transmission member 3 includes a screw 31, a moving block 32, a bearing 33 and a first transmission wheel 34, wherein one end of the screw 31 is transmission-connected to the turbine unit 1, and the axial direction of the screw is parallel to the first direction; the moving block 32 is rotatably mounted on the screw 31, and when the screw 31 rotates, the moving block 32 moves along the axial direction of the screw 31 through the threaded structure of the screw 31, thereby converting the rotational motion of the screw 31 into the linear motion of the moving block 32; the bearing 33 is mounted on the moving block 32, and the movement of the moving block 32 drives the bearing 33 to move along the axial direction of the screw 31; the first transmission wheel 34 is rotatably mounted on The bearing 33 and the first transmission wheel 34 are connected to the energy storage unit 2 in a transmission manner to drive the energy storage unit 2 to store energy. Specifically, the inner ring of the bearing 33 is fixedly connected to the moving block 32, so that when the moving block 32 moves axially along the lead screw 31, the bearing 33 will also move along with it. The first transmission wheel 34 is installed on the outer ring of the bearing 33. When the moving block 32 rotates with the lead screw and moves along the lead screw 31, the moving block 32 drives the bearing 33 and the first transmission wheel 34 to move. When the first transmission wheel 34 rotates to drive the energy storage unit 2, the bearing 33 rotates to reduce the rotation of the moving block 32 when the first transmission wheel 34 rotates. It is ensured that the moving block 32 moves axially along the lead screw 31, and at the same time, the first transmission wheel 34 can rotate to drive the energy storage unit 2.

[0039] An optional implementation of this embodiment is as follows: the transmission member 3 also includes a second transmission wheel 35, which is transmission-connected to the turbine unit 1 and the first transmission wheel 34, and the turbine unit 1 is used to drive the second transmission wheel 35 to rotate, thereby driving the first transmission wheel 34 to rotate, and the first transmission wheel 34 and the second transmission wheel 35 are connected by gears, friction wheels or other methods, so that when the first transmission wheel 34 moves along the axial direction of the screw 31, the first transmission wheel 34 is always connected to the second transmission wheel 35, so as to drive the first transmission wheel 34 to rotate through the second transmission wheel 35.

[0040] An optional implementation of this embodiment is as follows: the energy storage unit 2 includes a third transmission wheel 21 and an energy storage weight 22, wherein the third transmission wheel 21 is connected to the first transmission wheel 34 in transmission connection, and the third transmission wheel 21 and the first transmission wheel 34 can use gear transmission, friction wheel transmission or other methods, so that the first transmission wheel 34 is connected to the third transmission wheels 21 in the plurality of energy storage units 2 arranged along the first direction during the axial movement of the lead screw 31, so as to ensure that when the first transmission wheel 34 is driven by the second drive wheel to rotate, it can drive the third transmission wheel 2 1 is rotated; the energy storage weight 22 is connected to the third transmission wheel 21 in transmission connection. When the third transmission wheel 21 rotates, the energy storage weight 22 is driven to move vertically upward along the direction of gravity. During the movement of the energy storage weight 22, its height gradually increases, thereby converting kinetic energy into gravitational potential energy. When the first transmission wheel 34 is separated from the third transmission wheel 21 of any energy storage unit 2, the energy storage unit 2 stops storing energy, and the first transmission wheel 34 moves with the moving block 32 and abuts against the third transmission wheel 21 of the next energy storage unit 2, thereby driving the next energy storage unit 2 to store energy. Optionally, the transmission ratio between the first transmission wheel 34, the second transmission wheel 35 and the third transmission wheel 21, the weight of the energy storage weight 22 and the moving distance can be set according to actual needs to ensure that the energy storage unit 2 can store energy efficiently and release the stored gravitational potential energy when needed.

[0041] An optional implementation of this embodiment is as follows: the energy storage unit 2 also includes a drum 23, a connecting rope 24 and a pulley 25, wherein the drum 23 is connected to the third transmission wheel 21 in a transmission manner. When the third transmission wheel 21 is driven to rotate, the drum 23 is driven to rotate; one end of the connecting rope 24 is wound around the drum 23, and the other end is installed on the energy storage hammer 22. When the drum 23 rotates, the connecting rope 24 will be wound around or released on the drum 23, thereby driving the energy storage hammer 22 to move in the direction of gravity. The energy is transferred through the connecting rope 24 to ensure that the storage In order to ensure the stable movement of the energy storage weight 22, a steel wire rope can be used for the connecting rope 24; the pulley 25 connecting rope 24 is abutted against the pulley 25, the number and position of the pulley 25 can be adjusted according to actual use requirements to optimize the energy transfer path and efficiency, the pulley 25 can also use a movable pulley 25 group, which reduces the force required to drive the energy storage weight 22 to move, and further improves the energy conversion efficiency of the system. The generator set 7 for power generation can be connected to the drum 23 in transmission, and the drum 23 is driven to rotate when the energy storage weight 22 releases energy, thereby driving the generator set 7 to generate electricity.

[0042] An optional implementation of this embodiment is as follows: it also includes a first limit switch 4, which is located on one side of the energy storage weight 22. Specifically, the first switch is located above the energy storage weight 22. When the energy storage weight 22 is raised to store energy under the drive of the drum 23, when the energy storage weight 22 reaches a predetermined position and abuts against the first limit switch 4, the drum 23 stops rotating and the energy storage process is completed.

[0043] An optional implementation of this embodiment is as follows: it also includes a second limit switch 5, which is located on the side of the energy storage weight 22 away from the first limit switch 4. Specifically, the second switch limit switch is located below the energy storage weight 22. When the energy storage weight 22 needs to release the stored energy, the energy storage weight 22 drops to a predetermined position and abuts against the second limit switch 5, the drum 23 stops rotating, and the energy storage weight 22 stops moving, completing the energy release process.

[0044] An optional implementation of this embodiment is as follows: the turbine unit 1 includes a spray needle 11 and a turbine bucket 12, wherein the spray needle 11 is connected to a water source, and water flows out through the spray needle 11; the turbine bucket 12 is located below the spray needle 11, and the spray needle 11 is used to adjust and control the flow rate, speed and direction of the water flow to maximize the impact efficiency of the water flow. The water flows out from the spray needle 11 and impacts the turbine bucket 12 at a high speed. The turbine bucket 12 will be affected by the impact force of the water flow and start to rotate to convert the potential energy in the water flow into kinetic energy.

[0045] An optional implementation of this embodiment is as follows: In order to ensure that the moving block 32 can move axially along the screw 31 without rotating synchronously with the screw 31, the impulse turbine energy storage system also includes a fixing rod 6, and the moving block 32 is provided with a fixing hole. The shape and size of the fixing hole match the fixing rod 6, so that the fixing rod 6 can be smoothly inserted into the fixing hole. When the screw 31 rotates, the fixing rod 6 blocks the moving block 32 from rotating axially along the screw 31.

[0046] An optional implementation of this embodiment is as follows: during the energy storage process of the energy storage unit 2, the first transmission wheel 34 moves with the moving block 32. When the first transmission wheel 34 is separated from the third transmission wheel 21 of any energy storage unit 2, the energy storage weight 22 abuts against the first limit switch 4, the drum 23 stops rotating, and the energy storage weight 22 stops storing energy.

[0047] Through the above structure, when the impulse turbine energy storage system provided by the present invention is storing energy, water flows out from the spray needle 11 and impacts the turbine bucket 12 at high speed. The turbine bucket 12 will be affected by the impact force of the water flow and start to rotate. The turbine unit 1 drives the lead screw 31 and the second transmission wheel 35 to rotate. When the lead screw 31 rotates, the moving block 32 moves along the axial direction of the lead screw 31 through the threaded structure of the lead screw 31, thereby converting the rotational motion of the lead screw 31 into the linear motion of the moving block 32. The rotation of the second transmission wheel 35 drives the first transmission wheel 34 to rotate. The rotation of the first transmission wheel 34 drives the third transmission wheel 21 of an energy storage unit 2 to rotate, thereby driving the drum 23 to rotate. The drum 23 drives the energy storage weight 22 to move upward along the gravity direction through the connecting rope 24. During the movement of the energy storage weight 22 During the process, its height gradually increases, thereby converting kinetic energy into gravitational potential energy, and the first transmission wheel 34 moves with the moving block 32, and the first transmission wheel 34 is separated from the third transmission wheel 21 of any energy storage unit 2, and the energy storage weight 22 abuts against the first limit switch 4, the drum 23 stops rotating, and the energy storage weight 22 stops storing energy, and the first transmission wheel 34 continues to move with the moving block 32, and abuts against the third transmission wheel 21 of the next energy storage unit 2, thereby storing energy for multiple energy storage units 2 in turn. When the energy storage weight 22 needs to release the stored energy, the energy storage weight 22 descends to drive the drum 23 to rotate, and the drum 23 drives the generator set 7 to generate electricity. The energy storage weight 22 reaches the predetermined position and abuts against the second limit switch 5, the drum 23 stops rotating, and the energy storage weight 22 stops moving accordingly, completing the energy release process. Therefore, the impulse turbine energy storage system stores energy by using multiple energy storage units 2 so as to adapt to different energy storage needs. When a single energy storage unit 2 fails, it does not affect the energy storage and release of other energy storage units 2, so that the energy storage system can be adjusted and used more flexibly.

[0048] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by any person skilled in the art within the technical scope recorded in the present invention should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention shall be based on the protection scope of the claims.

Claims

1. An impulse turbine energy storage system, characterized in that: include: A water turbine unit, used to convert potential energy into kinetic energy of rotation; A plurality of energy storage units, used for converting the kinetic energy of the turbine unit into other energy forms for storage, wherein the plurality of energy storage units are arranged along the first direction, and the first direction is along the horizontal direction; A transmission member has one end drivingly connected to the turbine unit, the transmission member is drivingly connected to the energy storage unit, and the transmission member is drivingly connected to multiple energy storage units in sequence along the first direction to drive the energy storage units to store energy.

2. The impulse turbine energy storage system according to claim 1, characterized in that: The transmission member comprises: A screw, one end of which is drivingly connected to the turbine unit, and the axial direction of the screw is parallel to the first direction; A moving block is rotatably mounted on the lead screw, and the lead screw rotates to drive the moving block to move along the axial direction of the lead screw; A bearing is mounted on the moving block, and movement of the moving block drives the bearing to move along the axial direction of the lead screw; The first transmission wheel is rotatably mounted on the bearing, and the first transmission wheel is transmission-connected with the energy storage unit to drive the energy storage unit to store energy.

3. The impulse turbine energy storage system according to claim 1, characterized in that: The transmission member also includes: The second transmission wheel is connected to the water turbine assembly and the first transmission wheel, and the second transmission wheel rotates to drive the first transmission wheel to rotate.

4. The impulse turbine energy storage system according to claim 2, characterized in that: The energy storage unit comprises: A third transmission wheel is connected to the first transmission wheel, and the first transmission wheel rotates to drive the third transmission wheel to rotate; The energy storage weight is connected to the third transmission wheel in transmission connection. The third transmission wheel rotates to drive the energy storage weight to move upward along the direction of gravity, so as to convert kinetic energy into gravitational potential energy for storage.

5. The impulse turbine energy storage system according to claim 3, characterized in that: The energy storage unit also includes: The drum is connected to the third transmission wheel in transmission connection, and the third transmission wheel rotates to drive the drum to rotate; A connecting rope, one end of which is wound around the drum, and the other end of which is installed on the energy storage hammer, and the drum rotates to drive the energy storage hammer to move; A pulley is provided, and the connecting rope abuts against the pulley.

6. The impulse turbine energy storage system according to claim 4, characterized in that: Also includes: The first limit switch is located at one side of the energy storage weight. When the energy storage weight contacts the first limit switch, the drum stops rotating, the energy storage weight stops moving, and energy storage stops.

7. The impulse turbine energy storage system according to claim 1, characterized in that: Also includes: The second limit switch is located on a side of the energy storage weight away from the first limit switch. When the energy storage weight abuts against the second limit switch, the drum stops rotating, the energy storage weight stops moving, and stops releasing energy.

8. The impulse turbine energy storage system according to claim 1, characterized in that: The water turbine unit comprises: A spray needle connected to a water source; The water turbine bucket is driven by water flow through the nozzle to rotate the water turbine bucket, and the impact water turbine bucket rotates to convert potential energy into kinetic energy.

9. The impulse turbine energy storage system according to claim 1, characterized in that: Also includes: A fixing rod, the moving block is provided with a fixing hole, the fixing rod is passed through the fixing hole, the axial direction of the fixing rod is parallel to the axial direction of the lead screw, and the fixing rod is used to prevent the moving block from rotating synchronously with the lead screw.

10. The impulse turbine energy storage system according to claim 1, characterized in that: The first transmission wheel is separated from the third transmission wheel of any one of the energy storage units, the energy storage weight is in contact with the first limit switch, and the energy storage weight stops storing energy.

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