Novel vertical shaft energy storage system
By designing a ring-shaped heavy-duty silo and lifting transfer bucket in an abandoned vertical shaft, and using an electric winch and generator, the efficient conversion of gravitational potential energy into electrical energy was achieved, solving the problems of resource waste and environmental burden in existing technologies, and improving the energy efficiency and flexibility of the energy storage system.
Patent Information
- Application Number
- CN202511161620.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-08-19
- Publication Date
- 2025-11-25
AI Technical Summary
Existing technologies for converting gravitational potential energy into electrical energy require the construction of new specialized facilities or complex equipment, which involve large investments and occupy a lot of land. They cannot effectively utilize existing basic resources, such as existing abandoned shaft structures, and are therefore not economically viable or feasible.
The design employs a ring-shaped heavy cargo bin and a lifting transfer bucket. Using an electric winch and generator, heavy objects are lifted and lowered in the abandoned vertical shaft, realizing the conversion of gravitational potential energy into electrical energy. The transfer of heavy objects is optimized by combining a conical bottom and an opening and closing door structure, and energy is stored using the existing vertical shaft structure.
By making full use of abandoned vertical shaft structures, the problems of high investment and large land occupation are avoided, energy efficiency and flexible adaptability are improved, the problem of easy blockage during the transfer of heavy materials is solved, the storage and transfer capacity of the energy storage system is enhanced, and the conversion efficiency of gravitational potential energy into electrical energy is improved.
Smart Images
Figure CN121007097A_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the technical field of energy storage, in particular to a novel vertical shaft energy storage system. BACKGROUND
[0002] In the field of energy, the demand for grid peak shaving and intermittent compensation of renewable energy such as wind and solar energy is increasing. The existing energy storage technologies mainly include pumped storage, compressed air energy storage and battery energy storage. Among them, pumped storage relies on specific topographic conditions and a large amount of civil engineering, with long construction period, high cost and great impact on the ecological environment; compressed air energy storage has the problems of large heat loss, low system efficiency and high maintenance cost, and usually needs to build large gas storage tanks or underground caverns, which is limited in site selection; battery energy storage has fast response, but high initial investment, limited service life, heavy metal pollution and recycling and processing difficulties, and great environmental risk. From the perspective of structure and process, the above-mentioned energy storage methods are multiple conversions of electric energy to other forms and back to electric energy, resulting in efficiency loss and difficulty in meeting the multiple requirements of low cost, high reliability and environmental friendliness.
[0003] With the increasing demand for grid peak shaving and intermittent compensation of renewable energy, energy storage technology that converts gravitational potential energy into electric energy has gradually attracted attention. This energy storage method can alleviate the pressure on the power grid to some extent and improve energy utilization efficiency, which is of great significance to promote the large-scale application of renewable energy. It provides a new way to solve the imbalance between energy supply and demand, and helps to optimize the energy structure and promote sustainable development. In the process of converting the gravitational potential energy of heavy objects into electric energy, the traditional method is to use electric energy to lift heavy objects such as concrete blocks and metal blocks to store gravitational potential energy. When power generation is needed, the heavy objects fall to drive the rope or gear system, which drives the rotor of the generator to rotate, and then converts the mechanical energy into electric energy through the generator, realizing the conversion of gravitational potential energy into electric energy to adjust the demand for power supply.
[0004] However, the existing technology of converting gravitational potential energy into electric energy needs to build special facilities or complex equipment, which requires large investment and occupies a lot of land, and cannot effectively utilize existing infrastructure resources such as existing abandoned vertical shaft structures, especially in areas lacking ideal natural conditions, which is not economical and feasible. SUMMARY
[0005] In order to make full use of the existing abandoned vertical shaft structure and improve the energy efficiency and flexible adaptability of gravitational energy storage technology, the present application provides a novel vertical shaft energy storage system.
[0006] The novel vertical shaft energy storage system provided by the present application adopts the following technical scheme: A novel vertical shaft energy storage system, comprising: The well body is internally provided with a top and a bottom, and each of the top and the bottom is fixed with a ring-shaped heavy object bin, and a plurality of storage cavities for storing heavy objects are arranged along the circumference of the ring-shaped heavy object bin; one of the ring-shaped heavy object bins is configured as an upper heavy object bin, and the other is configured as a lower heavy object bin; A support frame is fixed to the top of the well body, and an electric winch is fixed to the support frame, and a free end of a cable of the electric winch is fixed with a lifting transfer bucket for transferring heavy objects. A feeding pipe is fixed to the bottom of the ring-shaped heavy object bin, and the feeding pipe is arranged to be inclined downward toward a side of the center of the well body, and the bottom of the feeding pipe is provided with an electric feeding bin door.
[0007] By adopting the above technical scheme, when heavy objects need to be stored at night or when excess electric energy needs to be stored, the electric winch is started to move the lifting transfer bucket to the lower heavy object bin by means of the cable, the electric feeding bin door at the bottom of the feeding pipe of the lower heavy object bin is opened, the heavy objects fall from the storage cavities into the lifting transfer bucket through the feeding pipe, then the electric winch is started again to move the lifting transfer bucket upward to the top of the upper heavy object bin by means of the cable, then the heavy objects in the lifting transfer bucket are transferred to the storage cavities of the upper heavy object bin, so that the lifting and storage of the heavy objects are completed, and the electric energy is converted into the gravitational potential energy of the heavy objects; when power generation is needed during the day or during the power consumption peak, the electric winch is started to move the lifting transfer bucket to the upper heavy object bin by means of the cable, the electric feeding bin door at the bottom of the feeding pipe of the upper heavy object bin is opened, the heavy objects fall from the storage cavities into the lifting transfer bucket through the feeding pipe, then the electric winch is loosened, the lifting transfer bucket carrying the heavy objects moves downward, the rotor of the generator in the electric winch rotates, the gravitational potential energy of the heavy objects is converted into electric energy, and when the lifting transfer bucket reaches the lower heavy object bin, the electric feeding bin door at the bottom of the feeding pipe of the lower heavy object bin is opened, so that the heavy objects fall into the storage cavities of the lower heavy object bin. The vertical shaft energy storage system can make full use of the existing abandoned vertical shaft structure, avoid high investment and land occupation caused by new special facilities or complex equipment, effectively utilize the existing resources, and has higher energy efficiency and flexibility, and can be used for power grid peak shaving, intermittent compensation of renewable energy and the like; meanwhile, the ring-shaped heavy object bin can store more heavy objects, and each storage cavity is an independent storage unit, so that the problem of blockage of the heavy objects during the transfer of the heavy objects into the lifting transfer bucket is solved.
[0008] Optionally, the lifting transfer bucket has a cylindrical structure, and the bottom of the lifting transfer bucket has a conical structure.
[0009] By adopting the technical scheme, when it is needed to transfer the heavy object from the upper heavy object bin to the lower heavy object bin to generate electricity, the lifting and transferring bucket is in a cylindrical structure and the bottom is in a conical structure, so that the conical bottom shape can reduce the wind resistance when falling in the shaft, reduce the energy loss caused by the wind resistance, improve the conversion efficiency of the heavy object gravity potential energy into electric energy, and improve the energy efficiency of the whole energy storage system.
[0010] Optionally, a plurality of discharge ports are formed in the bottom side of the lifting and transferring bucket along the circumferential direction of the lifting and transferring bucket, and a sliding door plate for closing the discharge port is slidably connected to one side of the discharge port in the vertical direction.
[0011] By adopting the technical scheme, when the lifting and transferring bucket moves to the top of the upper heavy object bin or the top of the lower heavy object bin to unload, the sliding door plate slides upward in the vertical direction to open the discharge port, and at this time, the heavy object in the lifting and transferring bucket can be discharged from the discharge port; after the heavy object is unloaded, the sliding door plate slides downward in the vertical direction to close the discharge port, and the plurality of discharge ports can accelerate the unloading speed of the heavy object in the lifting and transferring bucket and improve the transfer efficiency of the heavy object in the lifting and transferring bucket.
[0012] Optionally, a gear ring is rotatably arranged on the outer wall of the lifting and transferring bucket, the inner and outer sides of the gear ring are respectively provided with internal teeth and external teeth, a driving motor is fixedly arranged in the lifting and transferring bucket, and an output shaft of the driving motor is fixedly provided with a driving gear, which is engaged with the internal teeth of the gear ring. A screw rod is rotatably connected to the top of the sliding door plate, a lifting sleeve is threadedly connected to the outer side of the screw rod, the lifting sleeve is rotatably connected to the outer wall of the lifting and transferring bucket, and a driven gear, which is engaged with the external teeth of the gear ring, is fixedly arranged on the outer side of the lifting sleeve.
[0013] By adopting the technical scheme, when it is needed to open the discharge port of the lifting and transferring bucket to unload, the driving motor in the lifting and transferring bucket is started, the driving motor drives the driving gear on the output shaft to rotate, the driving gear drives the gear ring to rotate due to the engagement between the driving gear and the internal teeth of the gear ring, the gear ring drives the driven gear to rotate due to the engagement between the external teeth of the gear ring and the driven gear on the outer side of the lifting sleeve, the driven gear drives the lifting sleeve to rotate, the lifting sleeve is threadedly connected to the screw rod, the screw rod is rotatably connected to the top of the sliding door plate, and the screw rod moves vertically when the lifting sleeve rotates, thereby driving the sliding door plate to move upward or downward, so as to open or close the discharge port. The driving motor can simultaneously drive a plurality of sliding door plates to move upward or downward, which can conveniently and quickly open the discharge port of the lifting and transferring bucket, improve the unloading efficiency, and simplify the driving structure of the plurality of sliding door plates, thereby reducing the complexity and cost of the equipment.
[0014] Optionally, the inner bottom wall of the lifting and transferring bucket is centrally upwardly protruded to form an inclined surface.
[0015] By adopting the above technical scheme, when the opening and closing door plate is opened, the heavy object in the lifting transfer hopper will slide down along the inclined surface formed by the upward protrusion of the inner bottom wall center under the action of its own gravity, so that the heavy object can be more smoothly unloaded from the lifting transfer hopper, the residual accumulation of the heavy object in the lifting transfer hopper is reduced, and the efficiency and completeness of unloading are improved.
[0016] Optionally, a ring-shaped sliding rail is fixed at the top of the ring-shaped heavy object bin, a movable frame that can move circumferentially along the ring-shaped sliding rail is slidably connected to the ring-shaped sliding rail, a feeding pipe that is downwardly inclined from the center to the edge of the shaft body is fixed on the movable frame along the radial direction of the shaft body, and the feeding pipe has a feeding inlet at the top and a feeding outlet at the bottom.
[0017] By adopting the above technical scheme, when the heavy object is transferred, the movable frame can move circumferentially along the ring-shaped sliding rail at the top of the ring-shaped heavy object bin, when the lifting transfer hopper transfers the heavy object to the corresponding position, the heavy object can enter through the feeding inlet at the top of the feeding pipe and then be sent out from the feeding outlet at the bottom along the inclined feeding pipe to complete the transfer of the heavy object. The movable frame can move circumferentially along the ring-shaped sliding rail at the top of the ring-shaped heavy object bin to switch between different storage chambers in the ring-shaped heavy object bin, and store heavy objects in each storage chamber one by one to avoid uneven storage of heavy objects in each storage chamber. At the same time, the ring-shaped heavy object bin cooperates with the feeding structure to further enhance the storage and transfer capacity of the vertical shaft energy storage system.
[0018] Optionally, a plurality of moving rollers are rotatably connected to the movable frame, and the moving rollers are internally provided with hub motors.
[0019] By adopting the above technical scheme, when the hub motor is started, it can drive the moving rollers to rotate, so that the movable frame can move circumferentially along the ring-shaped sliding rail to realize autonomous movement of the movable frame without the need for additional complex driving devices. This makes the movement of the movable frame on the ring-shaped sliding rail more flexible and convenient, and further more efficiently cooperates with the lifting transfer hopper to complete the transfer of the heavy object, thereby improving the operation efficiency and flexibility of the entire vertical shaft energy storage system.
[0020] Optionally, a collecting and distributing cover is fixed at the top of the feeding pipe, and a reinforcing support is fixed between the feeding pipe close to the top side and the movable frame.
[0021] By adopting the above technical scheme, when the heavy object falls from the discharge port on the lifting transfer hopper into the collecting and distributing cover at the top of the feeding pipe, the collecting and distributing cover can collect the falling heavy object to prevent the heavy object from splashing outside the feeding pipe and ensure that the heavy object smoothly enters the feeding pipe. The reinforcing support is used to improve the structural stability of the feeding pipe to prevent it from being deformed or damaged during long-term use.
[0022] Optionally, a guide rod arranged in the vertical direction is fixed between the support frame and the bottom of the shaft body, and the lifting transfer bucket is slidably sleeved outside the guide rod.
[0023] By adopting the above technical scheme, the guide rod provides a clear trajectory and guidance for the up-down movement of the lifting transfer bucket, so that the lifting transfer bucket remains stable during the up-down movement and is not prone to violent shaking, thereby ensuring the stability and safety of the heavy object transfer process.
[0024] Optionally, a plurality of vibration motors are fixed to the outer wall of the annular heavy object bin.
[0025] By adopting the above technical scheme, when it is necessary to discharge the heavy objects in the annular heavy object bin to the lifting transfer bucket, the plurality of vibration motors on the outer wall of the annular heavy object bin are started, the vibration motors are operated to generate vibration, the heavy objects are prevented from being accumulated and blocked in the storage chamber and the discharge pipeline, and the heavy objects can smoothly fall from the storage chamber into the lifting transfer bucket through the discharge pipeline, thereby ensuring the smoothness of the heavy object transfer process and the stability of the operation of the vertical shaft energy storage system.
[0026] In summary, the present application has at least one of the following beneficial technical effects: 1. The vertical shaft energy storage system can make full use of the existing abandoned shaft structure, avoid high investment and land occupation caused by new special facilities or complex equipment, effectively utilize the existing resources, and has higher energy efficiency and flexible adaptability compared with the battery energy storage, has a longer service life, and can fill the structural resource waste and environmental burden problem in the current technical system, can be used for power grid peak shaving, intermittent compensation of renewable energy, etc.;At the same time, the annular heavy object bin can store more heavy objects, and each storage chamber is an independent storage unit, which solves the problem that the heavy objects are easily blocked when being discharged and transferred to the lifting transfer bucket; 2. The conical shape of the bottom of the lifting transfer bucket can reduce the wind resistance when falling in the shaft, reduce the energy loss caused by wind resistance, improve the conversion efficiency of the heavy object gravitational potential energy to electric energy, and improve the energy efficiency of the entire energy storage system. 3. When the heavy objects are discharged, the opening and closing door plate slides downward along the vertical direction to block the discharge port, and the plurality of discharge ports can accelerate the discharge speed of the heavy objects in the lifting transfer bucket and improve the transfer efficiency of the heavy objects in the lifting transfer bucket;The driving motor can synchronously drive the plurality of opening and closing door plates to move up and down, so that the discharge port of the lifting transfer bucket can be conveniently and quickly opened, the discharge efficiency is improved, the driving structure of the plurality of opening and closing door plates is simplified, and the complexity and cost of the equipment are reduced. 4. The mobile frame can move circumferentially on the annular slide rail on the top of the annular heavy object bin, thereby switching between different storage chambers in the annular heavy object bin, and storing heavy objects in each storage chamber one by one, avoiding uneven storage of heavy objects in each storage chamber. Meanwhile, the annular heavy object bin cooperates with the feeding structure, further enhancing the storage and transfer capacity of the vertical shaft energy storage system. BRIEF DESCRIPTION OF DRAWINGS
[0027] Figure 1 is a structural schematic diagram of the vertical shaft energy storage system of the present application; Figure 2 is a schematic diagram of the top structure of the new vertical shaft energy storage system; Figure 3 is a partial sectional view of the vertical shaft energy storage system; Figure 4 is a schematic diagram of the structure when the lifting transfer hopper moves above the upper heavy object bin; Figure 5 is a schematic diagram of the structure after the opening and closing door plate on the lifting transfer hopper is opened; Figure 6 is a schematic diagram of the structure; Figure 5 is a partial enlarged schematic diagram of part A in Figure 7 is a partial sectional view of the lifting transfer hopper.
[0028] BRIEF DESCRIPTION OF DRAWINGS: 1, shaft body; 2, support frame; 21, guide rod; 3, electric winch; 4, lifting transfer hopper; 41, discharge port; 42, opening and closing door plate; 43, gear ring; 44, driving motor; 45, driving gear; 46, screw rod; 47, lifting sleeve; 48, driven gear; 5, annular heavy object bin; 51, storage chamber; 52, vibration motor; 6, discharge pipeline; 61, electric discharge bin door; 7, annular slide rail; 71, mobile frame; 72, feeding pipeline; 721, feeding port; 722, feeding port; 73, mobile roller; 74, collection and distribution cover; 741, avoidance hole; 75, reinforcing support. DETAILED DESCRIPTION
[0029] The following will be described in detail in combination with the accompanying drawings. Figures 1-7 The present application will be further described in detail.
[0030] The embodiment of the present application discloses a new vertical shaft energy storage system. Referring to Figure 1 and Figure 2, the vertical shaft energy storage system comprises a shaft body 1, a support frame 2, an electric winch 3 and a lifting transfer bucket 4, wherein the shaft body 1 is the basic structure of the entire energy storage system, and an existing abandoned vertical shaft is used. The support frame 2 is fixed at the top of the shaft body 1; the electric winch 3 is installed on the support frame 2, and the free end of the cable thereof is connected with the lifting transfer bucket 4 used for transferring heavy objects. The electric winch 3 can be forward or reverse rotated, when the heavy object is lifted, the electric winch 3 is forward rotated to wind up the cable and drive the lifting transfer bucket 4 to rise; when the heavy object falls, the electric winch 3 is reverse rotated to drive the generator rotor in the electric winch 3 to rotate and generate electricity, or other forms of electricity generation such as brake generation can be used here.
[0031] With reference to Figure 3 and Figure 4 , the top and bottom of the shaft body 1 are fixed with annular heavy object storages 5, the bottom of each annular heavy object storage 5 is fixedly connected with a discharging pipeline 6, the discharging pipeline 6 is downwardly inclined towards the center of the shaft body 1, and the bottom of the discharging pipeline 6 is provided with an electric discharging bin door 61. A plurality of storage cavities 51 for storing heavy objects are arranged along the circumference of each annular heavy object storage 5, each storage cavity 51 is an independent storage unit and can independently store heavy objects, so as to solve the problem that the heavy objects are easily blocked when being transferred to the lifting transfer bucket 4, and the material of the annular heavy object storage 5 can be high-strength steel or reinforced concrete to ensure the structural strength and durability. The annular heavy object storage 5 at the top of the shaft body 1 is an upper heavy object storage, and the annular heavy object storage 5 at the bottom of the shaft body 1 is a lower heavy object storage.
[0032] When the heavy objects need to be stored at night or when the electricity is surplus, the electric winch 3 is started to move the lifting transfer bucket 4 to the lower heavy object storage by the cable, the electric discharging bin door 61 at the bottom of the discharging pipeline 6 of the lower heavy object storage is opened, the heavy objects in the storage cavities 51 fall into the lifting transfer bucket 4 through the discharging pipeline 6, then the electric winch 3 is started again to move the lifting transfer bucket 4 upward to the top of the upper heavy object storage by the cable, and then the heavy objects in the lifting transfer bucket 4 are transferred to the storage cavities 51 of the upper heavy object storage, so that the lifting and storage of the heavy objects are completed, and the electric energy is converted into the gravitational potential energy of the heavy objects.
[0033] When the power is needed during the day or power peak, the electric winch 3 is started to move the lifting transfer bucket 4 to the upper heavy material bin by the cable, the electric discharge bin door 61 at the bottom of the upper heavy material bin discharge pipeline 6 is opened, the heavy material falls from the storage chamber 51 to the lifting transfer bucket 4 through the discharge pipeline 6, then the electric winch 3 releases the cable, the lifting transfer bucket 4 carrying the heavy material moves downward, drives the generator rotor in the electric winch 3 to rotate, converts the gravitational potential energy of the heavy material into electric energy, after reaching the lower heavy material bin, the electric discharge bin door 61 at the bottom of the lower heavy material bin discharge pipeline 6 is opened, so that the heavy material falls into the storage chamber 51 of the lower heavy material bin. The shaft energy storage system can make the abandoned shaft be fully utilized, avoid the high investment and land occupation problem of newly built special facilities, and through the cooperation of the annular heavy material bin 5 and the lifting transfer bucket 4, the lifting and falling of the heavy material can be orderly carried out, the conversion of gravitational potential energy and electric energy is realized, which is used for power grid peak shaving, intermittent compensation of renewable energy and the like, and fills the structural resource waste and environmental burden problem in the current technical system.
[0034] Specifically, referring to Figure 3 and Figure 4 , the guide rod 21 arranged in the vertical direction is fixed between the support frame 2 and the bottom of the shaft body 1, the lifting transfer bucket 4 is slidably sleeved outside the guide rod 21, the guide rod 21 provides a clear track and guide for the lifting transfer bucket 4 to move up and down, so that the lifting transfer bucket 4 keeps stable during the up and down movement and is not easy to shake violently, thereby ensuring the stability and safety of the heavy material transfer process. The outer wall of the annular heavy material bin 5 is fixed with a plurality of vibration motors 52, when the heavy material in the annular heavy material bin 5 needs to be discharged to the lifting transfer bucket 4, the plurality of vibration motors 52 on the outer wall of the annular heavy material bin 5 are started, the vibration motors 52 operate to generate vibration, which reduces the accumulation and blockage of the heavy material in the storage chamber 51 and the discharge pipeline 6, so that the heavy material can smoothly fall from the storage chamber 51 to the lifting transfer bucket 4 through the discharge pipeline 6.
[0035] Specifically, referring to Figure 4 and Figure 5 , the lifting transfer bucket 4 has a cylindrical structure as a whole, and the bottom thereof has a conical structure. The conical bottom is used to reduce the wind resistance when the lifting transfer bucket 4 carrying the heavy material moves downward to generate electricity, and to improve the conversion efficiency of the gravitational potential energy of the heavy material into electric energy. The shape of the bottom of the lifting transfer bucket 4 can also be replaced by other structures capable of reducing wind resistance, such as a hemispherical structure. A plurality of discharge ports 41 are formed in the side of the lifting transfer bucket 4 close to the bottom along the circumferential direction thereof. A side of each discharge port 41 is slidably connected with an opening and closing door plate 42 for blocking the discharge port 41. When the lifting transfer bucket 4 moves to the top of the annular heavy material bin 5 for unloading, the plurality of discharge ports 41 can accelerate the unloading speed of the heavy material in the lifting transfer bucket 4, and improve the transfer efficiency of the heavy material in the lifting transfer bucket 4.
[0036] Referring to Figure 5 and Figure 6The outer side wall of the lifting transfer hopper 4 is rotatably sleeved with a gear ring 43, the inner and outer sides of the gear ring 43 are respectively provided with internal and external teeth, the lifting transfer hopper 4 is internally fixed with a driving motor 44, the output shaft of the driving motor 44 is fixedly sleeved with a driving gear 45, and the driving gear 45 is in mesh with the internal teeth of the gear ring 43. The top of the opening and closing door is rotatably connected with a screw rod 46, the outer side of the screw rod 46 is threadedly connected with a lifting sleeve 47, the lifting sleeve 47 is rotatably connected with the outer side wall of the lifting transfer hopper 4, and the outer side of the lifting sleeve 47 is fixedly sleeved with a driven gear 48 in mesh with the external teeth of the gear ring 43.
[0037] When it is required to open the discharge port 41 of the lifting transfer hopper 4 to unload, the driving motor 44 is started, the driving motor 44 drives the driving gear 45 on the output shaft to rotate, the driving gear 45 drives the gear ring 43 to rotate, the gear ring 43 drives the driven gear 48 to rotate through the external teeth, the driven gear 48 drives the lifting sleeve 47 to rotate, the lifting sleeve 47 is threadedly connected with the screw rod 46, so that the screw rod 46 moves up and down, the opening and closing door plate 42 is driven to move up and down, and the opening and closing of the discharge port 41 is realized. The driving motor 44 can synchronously drive a plurality of opening and closing door plates 42 to move up and down, the discharge port 41 of the lifting transfer hopper 4 can be conveniently and quickly opened, the unloading efficiency is improved, the driving structure of the plurality of opening and closing door plates 42 is simplified, and the complexity and cost of the equipment are reduced.
[0038] With reference to Figure 7 The inner bottom wall of the lifting transfer hopper 4 is centrally upwardly protruded to form an inclined surface, after the opening and closing door plate 42 is opened, the heavy object in the lifting transfer hopper 4 slides downward along the inclined surface out of the lifting transfer hopper 4, the heavy object is smoothly unloaded, the unloading efficiency is improved, and the residual accumulation of the heavy object in the lifting transfer hopper 4 is reduced. The annular heavy object bin 5 is fixedly provided with an annular slide rail 7, the annular slide rail 7 is slidably connected with a moving frame 71 which can move along the circumference of the annular slide rail 7, the moving frame 71 is fixedly provided with a feeding pipe 72 which is downwardly inclined from the center to the edge of the shaft body 1 along the radial direction of the shaft body 1, the feeding pipe 72 is provided with a feeding port 721 at the top and a feeding port 722 at the bottom.
[0039] With reference to Figure 3 and Figure 4The movable frame 71 is rotationally connected with a plurality of movable rollers 73, the movable rollers 73 are internally provided with a hub motor, the hub motor can drive the movable frame 71 to move on the annular slide rail 7, so as to realize the position adjustment of the feeding pipe 72. The feeding pipe 72 is fixed with a collecting cover 74 at the top, the collecting cover 74 is provided with a avoiding hole 741 at the middle position, the inner diameter of the avoiding hole 741 is matched with the outer diameter of the lifting transfer hopper 4, and the collecting cover 74 can collect the heavy objects falling from the discharge port 41 of the lifting transfer hopper 4, so that the heavy objects are not easy to splash outside the feeding pipe 72. The feeding pipe 72 is fixed with a reinforcing support 75 between the movable frame 71 and the side close to the top, the reinforcing support 75 can strengthen the stability of the feeding pipe 72, so that the feeding pipe 72 is not easy to deform or damage in the long-term use.
[0040] When the heavy objects are transferred, the movable frame 71 can move along the circumference on the annular slide rail 7 at the top of the annular heavy object warehouse 5, when the lifting transfer hopper 4 transfers the heavy objects to the corresponding position, the heavy objects can enter the feeding pipe 72 through the feeding port 721 at the top of the feeding pipe 72, and then are sent out from the feeding port 722 at the bottom along the inclined feeding pipe 72, so as to complete the transfer of the heavy objects.
[0041] When the movable frame 71 needs to move along the circumference on the annular slide rail 7 at the top of the annular heavy object warehouse 5, so as to switch between different storage chambers 51 in the annular heavy object warehouse 5, first, the hub motor is started, then the hub motor can drive the movable rollers 73 to rotate, the movable rollers 73 can drive the movable frame 71 to move along the circumference of the annular slide rail 7, so as to realize the autonomous movement of the movable frame 71 with the feeding pipe 72, and store the heavy objects in each storage chamber 51 one by one, so as to avoid the problem of uneven storage of heavy objects in each storage chamber 51, and the movable frame 71 can move on the annular slide rail 7 more flexibly and conveniently without additional complex driving devices, so as to more efficiently cooperate with the lifting transfer hopper 4 to complete the transfer work of the heavy objects, and improve the operation efficiency and flexibility of the whole vertical shaft energy storage system.
[0042] The implementation principle of the novel vertical shaft energy storage system in the embodiment of the application is as follows: when it is night or when energy needs to be stored, the electric winch 3 is started to move the lifting transfer hopper 4 to the lower heavy object bin by using the cable, the electric unloading bin door 61 at the bottom of the unloading pipeline 6 of the lower heavy object bin is opened, the heavy objects fall into the lifting transfer hopper 4 from the storage chamber 51 through the unloading pipeline 6, then the electric winch 3 is started again to move the lifting transfer hopper 4 upward to the top of the upper heavy object bin by using the cable, then the heavy objects in the lifting transfer hopper 4 are transferred to the storage chamber 51 of the upper heavy object bin, that is, the lifting and storage of the heavy objects are completed, and the electric energy is converted into the gravitational potential energy of the heavy objects; when it is daytime or when power needs to be generated, the electric winch 3 is started to move the lifting transfer hopper 4 to the upper heavy object bin by using the cable, the electric unloading bin door 61 at the bottom of the unloading pipeline 6 of the upper heavy object bin is opened, the heavy objects fall into the lifting transfer hopper 4 from the storage chamber 51 through the unloading pipeline 6, then the electric winch 3 releases the cable, the lifting transfer hopper 4 carrying the heavy objects moves downward, the generator rotor in the electric winch 3 rotates, the gravitational potential energy of the heavy objects is converted into electric energy, when the lifting transfer hopper 4 reaches the lower heavy object bin, the electric unloading bin door 61 at the bottom of the unloading pipeline 6 of the lower heavy object bin is opened, and the heavy objects fall into the storage chamber 51 of the lower heavy object bin.
[0043] The vertical shaft energy storage system fully utilizes the existing abandoned vertical shaft structure, avoids high investment and land occupation of newly built special facilities, is more environmentally friendly and has a longer service life than battery energy storage, has high energy efficiency and flexible adaptability, and can be used for power grid peak shaving, intermittent compensation of renewable energy and the like. Through the arrangement of the annular heavy object bin 5, more heavy objects can be stored, and each storage chamber 51 is independent, so that the problem of heavy object unloading blockage is solved. The special design of the lifting transfer hopper 4, such as the conical bottom, the discharge port 41 structure and the inner bottom wall inclined surface, improves the efficiency of heavy object transfer and power generation. The cooperative work of the electric winch 3, the driving motor 44, the hub motor and other components realizes the orderly lifting and falling of the heavy objects, and efficiently converts the gravitational potential energy of the heavy objects into electric energy.
[0044] The above are preferred embodiments of the application, which do not limit the protection scope of the application, therefore: any equivalent changes made on the basis of the structure, shape and principle of the application should be covered by the protection scope of the application.
Claims
1. A novel vertical shaft energy storage system, characterized in that, include: Well body (1), with annular heavy object chambers (5) fixed at the top and bottom of the well body (1), and multiple storage chambers (51) for storing heavy objects arranged along its circumference inside the annular heavy object chamber (5), with one of the annular heavy object chambers (5) designated as the upper heavy object chamber and the other as the lower heavy object chamber; A support frame (2) is fixed to the top of the well body (1). An electric winch (3) is fixed on the support frame (2). A lifting and transferring bucket (4) for transferring heavy objects is fixed to the free end of the cable of the electric winch (3). The discharge pipe (6) is fixed to the bottom of the annular heavy cargo bin (5), and the discharge pipe (6) is inclined downward toward the center of the well body (1). The bottom of the discharge pipe (6) is provided with an electric discharge bin door (61).
2. The novel vertical shaft energy storage system according to claim 1, characterized in that, The lifting and transfer bucket (4) has a cylindrical structure as a whole, and the bottom of the lifting and transfer bucket (4) has a conical structure.
3. The novel vertical shaft energy storage system according to claim 2, characterized in that, The lifting and transferring bucket (4) has multiple discharge ports (41) on its circumference near the bottom side, and a door panel (42) for sealing the discharge port (41) is slidably connected on one side of the discharge port (41) in the vertical direction.
4. A novel vertical shaft energy storage system according to claim 3, characterized in that, The outer wall of the lifting and transferring bucket (4) is rotatably fitted with a gear ring (43). The gear ring (43) has internal teeth and external teeth on its inner and outer sides respectively. The lifting and transferring bucket (4) is fixed with a drive motor (44). The output shaft of the drive motor (44) is fixedly fitted with a drive gear (45). The drive gear (45) meshes with the internal teeth of the gear ring (43). The top of the opening and closing door is rotatably connected to a screw (46), and a lifting sleeve (47) is threadedly connected to the outside of the screw (46). The lifting sleeve (47) is rotatably connected to the outer wall of the lifting transfer bucket (4), and a driven gear (48) that meshes with the outer teeth of the gear ring (43) is fixedly sleeved on the outside of the lifting sleeve (47).
5. A novel vertical shaft energy storage system according to claim 4, characterized in that, The inner bottom wall of the lifting and transferring bucket (4) protrudes upward to form an inclined surface.
6. A novel vertical shaft energy storage system according to claim 1, characterized in that, The top of the annular heavy cargo bin (5) is fixed with an annular slide rail (7). A movable frame (71) that can move circumferentially along the annular slide rail (7) is slidably connected to the annular slide rail (7). A feeding pipe (72) that is inclined downward from the center of the well body (1) to the edge is fixed on the movable frame (71) along the radial direction of the well body (1). The feeding pipe (72) has an inlet (721) at the top and a feeding port (722) at the bottom.
7. A novel vertical shaft energy storage system according to claim 6, characterized in that, Multiple movable rollers (73) are rotatably connected to the movable frame (71), and each movable roller (73) has a built-in hub motor.
8. A novel vertical shaft energy storage system according to claim 6, characterized in that, The top of the feeding pipe (72) is fixed with a collection cover (74), and a reinforcing bracket (75) is fixed between the feeding pipe (72) and the movable frame (71) near the top.
9. A novel vertical shaft energy storage system according to any one of claims 1-8, characterized in that, A guide rod (21) is fixed between the support frame (2) and the bottom of the well body (1) in a vertical direction, and the lifting transfer bucket (4) is slidably sleeved on the outside of the guide rod (21).
10. A novel vertical shaft energy storage system according to any one of claims 1-8, characterized in that, Multiple vibration motors (52) are fixed to the outer wall of the annular heavy cargo bin (5).