Air compression device utilizing gravity energy storage and operation method

Abstract

The present invention discloses an air compression device and an operating method utilizing gravity energy storage, and relates to the technical field of compressed air energy storage, comprising: a placement platform arranged on the ground, a processing tank and an air storage module being fixedly connected to the top of the placement platform, a lifting and lowering pressure tank being slidably connected inside the processing tank, an air film being fixedly connected between the lifting and lowering pressure tank and the bottom end inside the processing tank, a lifting device being fixedly connected to the top of the processing tank, air inside the air film being compressed by the gravitational potential energy of the lifting and lowering pressure tank when it descends, and a sensor being arranged inside the air film to monitor the pressure of the air, and when the specified pressure is reached, a control valve arranged outside the air intake conveying pipe is opened to convey the gas to the inside of the air storage module, and when electricity is scarce in the later stage, the air storage module is connected to an external generator, and the compressed gas inside the air storage module is released to drive the generator to generate electricity, thereby achieving the effect of energy storage.

Description

Technical Field

[0001] The present invention relates to the technical field of compressed air energy storage, and in particular to an air compression device utilizing gravity energy storage and an operating method thereof. Background Art

[0002] Large-scale energy storage technologies mainly include pumped storage, compressed air storage and gravity storage. Among them, the operating principle of gravity storage is: when storing energy, heavy objects such as rocks are transferred to a high place by electric drive, and the electrical energy is converted into the gravitational potential energy of the rocks; when releasing energy, heavy objects such as rocks are placed from a high place to a low place to drive the generator to generate electricity, and the gravitational potential energy is converted back into electrical energy. Its advantages are: modular system (large-scale energy storage can be achieved), high energy storage efficiency (80%-90%), short response time, long operation time (30-50 years), low construction cost, and flexible layout. However, it also has some disadvantages, such as low energy density (0.2-0.4Wh / kg), low power per unit module, and large footprint. The principle of compressed air energy storage is that when there is excess electricity, the energy storage system consumes electricity to compress the air and store it in the air storage chamber, so that the electrical energy can be converted into compressed air; when there is a shortage of electricity, the high-pressure air in the air storage chamber is released, and then enters the combustion chamber to be heated by fuel combustion, and then drives the turbine to generate electricity.

[0003] The patent application with reference publication number CN116428140A discloses an air compression device utilizing gravity energy storage, including a work platform, a bulk material pit is arranged on one side of the work platform, a pipeline accommodating chamber and a discharge channel are provided in the work platform, the pipeline accommodating chamber is connected with the discharge channel, the discharge port of the discharge channel is placed in the bulk material pit, a compression pipeline is arranged in the pipeline accommodating chamber, a suction machine, a high-pressure gas storage tank and a generator are arranged on the upper surface of the work platform, a bulk material feed pipeline and a bulk material discharge pipeline are arranged on the suction machine, the outlet end of the bulk material discharge pipeline is connected with the pipeline accommodating chamber, a gas transmission pipeline is arranged on the high-pressure gas storage tank, and the high-pressure gas storage tank is connected with the generator, and an operation method is also disclosed. The present invention uses bulk material as a heavy object for gravity energy storage, utilizes the gravity of bulk material to compress air, converts excess electrical energy into the internal energy of compressed gas, utilizes excess electricity, realizes the comprehensive utilization of resources, and greatly improves the comprehensive benefits of the system.

[0004] In the above device, the sand and gravel are transported to the interior of the storage frame by the conveying device, and then the air is compressed by the downward potential energy of the storage frame. However, the space inside the storage frame is limited, and there are gaps between the sand and gravel, so a large amount of space cannot be utilized, thereby reducing the downward gravitational potential energy of the storage frame. However, if water is pumped, its weight is lighter than that of sand and gravel, so the weight of the storage box cannot be maximized without fully utilizing the space. In addition, work will inevitably be done in the process of compressing the air, and doing work will inevitably generate heat, and the released heat cannot be effectively recovered.

[0005] Therefore, it is necessary to provide an air compression device and an operating method that utilizes gravity energy storage to solve the above-mentioned technical problems. Summary of the invention

[0006] The object of the present invention is to provide an air compression device and an operating method utilizing gravity energy storage to solve the defects of the prior art mentioned in the above background technology.

[0007] Based on the above ideas, the present invention provides the following technical solution: an air compression device utilizing gravity energy storage, comprising:

[0008] A placement platform is arranged on the ground, a treatment tank and an air storage module are fixedly connected to the top of the placement platform, a lifting and lowering pressure tank is slidably connected inside the treatment tank, an air film is fixedly connected between the lifting and lowering pressure tank and the bottom end of the treatment tank, a lifting device is fixedly connected to the top of the treatment tank, a winding shaft of the lifting device is fixedly connected to the top of the lifting and lowering pressure tank through a steel wire rope, and is used to control the descent of the lifting and lowering pressure tank to compress the air inside the air film, a plurality of sand flow troughs and a plurality of water flow troughs are provided on the outside of the lifting and lowering pressure tank, and the water flow trough is arranged at the lower part of the sand flow trough;

[0009] A filter push plate, the filter push plate is arranged at the bottom end of the lifting and lowering pressure tank and seals the water flow channel, a water inlet connecting pipe is fixedly connected to the inside of the placement platform, the water inlet connecting pipe passes through the filter push plate and is slidably connected to the filter push plate, and a stirring component is arranged outside the water inlet connecting pipe;

[0010] A sand storage box is fixedly connected to the top of the placement platform for providing sand and gravel for the lifting and pressure tank. A water storage tank is also fixedly connected to the top of the placement platform for providing water to the inside of the lifting and pressure tank. When sand and gravel and water are transported to the inside of the lifting and pressure tank, the sand and gravel are stirred and mixed by the stirring component.

[0011] As a further solution of the present invention: a conveying device is arranged outside the sand storage box, the output end of the conveying device is fixedly connected to the top of the processing tank, a sand conveying pipe is fixedly connected between the conveying device and the top of the lifting and lowering pressure tank, a water pump is arranged outside the water storage tank, the input end of the water pump is fixedly connected to the water storage tank through a first connecting pipe, a water pipe is fixedly connected between the output end of the water pump and the processing tank, and a water hose is fixedly connected between the water pipe and the top of the water inlet connecting pipe.

[0012] As a further solution of the present invention: a rotating cylinder is rotatably connected in the middle of the water inlet connecting pipe, and both ends of the water inlet connecting pipe are respectively fixedly connected to the bottom and top of the treatment tank, and an impeller is fixedly connected inside the rotating cylinder. When water passes through the rotating cylinder, the rotating cylinder is driven to rotate by the impeller. A driving motor is provided at the top of the water inlet connecting pipe, and a transmission rod is fixedly connected to the middle of the impeller. The transmission rod passes through the top of the water inlet connecting pipe and is rotatably connected to the water inlet connecting pipe, and the output shaft of the driving motor is connected to the transmission rod via a clutch.

[0013] As a further solution of the present invention: the stirring assembly includes a plurality of fixed frames fixedly connected to the outside of the rotating cylinder, the plurality of fixed frames are fixedly connected to connecting frames, the plurality of connecting frames are provided with reciprocating screws, the reciprocating screws penetrate the connecting frames and are rotatably connected to the connecting frames, a lifting ring is provided between the plurality of connecting frames, the plurality of reciprocating screws penetrate the lifting rings and are connected to the lifting rings through ball nut pairs, and the lifting rings are fixedly connected with a plurality of stirring plates.

[0014] As a further solution of the present invention: the stirring assembly also includes a protection frame, which is rotatably connected to the top of the lifting and lowering pressure tank. A fixed inner gear ring is arranged inside the protection frame, and the fixed inner gear ring is fixedly connected to the top of the lifting and lowering pressure tank. A plurality of reciprocating screws penetrate the protection frame and are rotatably connected to the protection frame. The tops of the plurality of protection frames are fixedly connected to transmission gears, and the plurality of transmission gears are meshed with the fixed inner gear ring.

[0015] As a further solution of the present invention: a plurality of flow holes for filtering sand and gravel are provided on the top of the filter push plate, a sealing baffle corresponding to a plurality of sand flow troughs is fixedly connected to the top of the filter push plate, a plurality of fixing rods are fixedly connected to the bottom of the filter push plate, the plurality of fixing rods penetrate the lifting and lowering pressure tank and are slidably connected to the lifting and lowering pressure tank, a connecting disk is fixedly connected to the bottom of the plurality of fixing rods, a reset spring is sleeved on the outer side of the plurality of fixing rods, both ends of the reset spring are fixedly connected to the lifting and lowering pressure tank and the connecting disk respectively, a plurality of sand outlet troughs and a plurality of water outlet troughs are provided on the outer side of the processing tank, when the lifting and lowering pressure tank descends to the bottom of the processing tank, the plurality of sand outlet troughs overlap with the plurality of sand flow troughs respectively, and the plurality of water outlet troughs overlap with the plurality of water flow troughs respectively.

[0016] As a further solution of the present invention: a sand collection frame is fixedly connected to the outside of the processing tank, the sand collection frame is communicated with the inside of the processing tank through a sand outlet trough, a sand outlet pipe is fixedly connected to the bottom of the sand collection frame, the sand outlet pipe is fixedly connected to a sand storage box, the processing tank is fixedly connected to a water collection frame, the water collection frame is communicated through a water outlet trough, a water collection box is fixedly connected to the top of the placement platform, a water collection pipe is fixedly connected between the water collection frame and the water collection box, and the water collection box is fixedly connected to the water storage tank through a second connecting pipe.

[0017] As a further solution of the present invention: a circulation sleeve is fixedly connected to the bottom of the lifting and lowering pressure tank, and the circulation sleeve is arranged on the outside of the air film. A plurality of spacer rings are fixedly connected inside the circulation sleeve, and ventilation grooves are provided on the outsides of the plurality of spacer rings. The inner side of the circulation sleeve is fixedly connected to the air film, and an air intake pipe is fixedly connected between the air storage module and the bottom of the circulation sleeve. A gas delivery device is fixedly connected to the top of the placement platform, and an output end of the gas delivery device is connected to an air delivery pipe, which passes through the lifting and lowering pressure tank and is fixedly connected to the air film. A heat absorption sleeve is provided on the outside of the circulation sleeve, and an extrusion plate is fixedly connected to the bottom of the heat absorption sleeve, and the extrusion plate is fixedly connected to the connecting plate. The top of the heat absorption sleeve is fixedly connected to the lifting and lowering pressure tank, and a water inlet pipe for water intake and a water outlet pipe for water discharge are fixedly connected to the outside of the heat absorption sleeve.

[0018] As a further solution of the present invention: it also includes a control module, and the control module is connected to the gas storage module, the lifting device, the conveying equipment, the gas delivery device and the water pump respectively.

[0019] The present invention also provides an operating method of an air compression device utilizing gravity energy storage, comprising the following steps:

[0020] Step 1: When the power generation of the power grid is at its peak, the control module is used to control the lifting device to pull the lifting and lowering pressure tank upward and move it to the upper end of the processing tank;

[0021] Step 2: Start the conveying equipment and water pump to convey water and sand and gravel into the lifting and lowering pressure tank, and drive the stirring component through the impact of water to fully mix the water and sand and gravel;

[0022] Step 3: Inflate the air film through the air delivery device. After the inflation is completed, release the lifting and lowering pressure tank to squeeze the gas inside the lifting and lowering pressure tank. When it is compressed to a specified pressure, it is transported to the inside of the gas storage module.

[0023] Step 4: When the lifting and lowering pressure tank moves to the bottom, the filter push plate squeezes the water and sand upward, so that the water and sand are separated and flow out from the sand flow trough and the water flow trough respectively.

[0024] Compared with the prior art, the present invention has the following beneficial effects:

[0025] 1. The air inside the air film is compressed by the gravitational potential energy of the lower pressure tank when it descends, and a sensor is installed inside the air film to monitor the air pressure. When the specified pressure is reached, the control valve installed on the outside of the air intake pipe is opened to transport the gas to the inside of the gas storage module. When electricity is scarce in the later stage, the gas storage module is connected to the external generator, and the compressed gas inside the gas storage module is released to drive the generator to generate electricity, thereby achieving the effect of energy storage.

[0026] 2. A reciprocating screw is provided inside each of the multiple connection frames. The reciprocating screw drives the fixedly connected transmission gear to rotate. The transmission gear rotates the reciprocating screw by meshing with the fixed inner gear ring, and then the lifting ring outside the reciprocating screw is lifted and lowered reciprocatingly, so that the multiple stirring plates fixedly connected to the inner wall of the lifting ring move up and down, thereby further improving the mixing effect of water and sand and gravel, thereby achieving the utilization rate of the space inside the lifting and lowering pressure tank, thereby increasing the weight of the lifting and lowering pressure tank when it is descending.

[0027] 3. As the filter push plate rises, the sand flow groove of the sealing baffle is exposed, and the sand and gravel flow into the sand collection frame through the sand flow groove for collection. The bottom of the sand collection frame is set to an inclined shape, so that the sand and gravel can flow back to the sand storage box through the sand outlet pipe, thereby achieving the effect of separating the sand and gravel, preparing for the next transportation. When the lifting device is lifted, the lifting and lowering pressure tank can rise quickly.

[0028] 4. When the gas flows through the circulation sleeve, the water fully absorbs the heat in the gas. When the connecting plate is lowered and contacts the bottom of the processing tank, the extrusion plate squeezes the heat-absorbing sleeve to discharge the heated water inside through the outlet pipe. When the lifting and lowering pressure tank rises, the reset spring pushes the connecting plate down, and then the water inside the water inlet pipe is sucked into the heat-absorbing sleeve through negative pressure, and automatically replenished and discharged. In addition, one-way valves are installed on the outside of the water inlet pipe and the water outlet pipe, respectively, so as to collect the heat in the compressed air and improve the utilization rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0030] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0031] Figure 2 It is a schematic diagram of the structure of the processing tank and the sand storage box of the present invention;

[0032] Figure 3 It is a schematic diagram of the cross-sectional structure of the lifting and lowering pressure tank of the present invention;

[0033] Figure 4 It is a schematic diagram of the structure of the gas storage module of the present invention;

[0034] Figure 5 This is a schematic diagram of the structure of the processing tank of the present invention when viewed from above;

[0035] Figure 6 It is a schematic diagram of the cross-sectional structure of the lifting and lowering pressure tank of the present invention;

[0036] Figure 7 It is a schematic diagram of the structure of the filter push plate of the present invention;

[0037] Figure 8 The present invention Figure 7 A schematic diagram of the enlarged structure of part A;

[0038] Fig. 9 It is a schematic diagram of the structure of the stirring assembly of the present invention;

[0039] Fig.10 It is a schematic diagram of the cross-sectional structure of the processing tank of the present invention;

[0040] Fig.11 It is a schematic diagram of the circulation sleeve structure of the present invention;

[0041] Fig.12 It is a schematic diagram of the control structure of the present invention.

[0042] In the figure: 1. Placement platform; 2. Processing tank; 201. Sand outlet trough; 202. Water outlet trough; 3. Lifting and lowering pressure tank; 301. Sand flow trough; 302. Water flow trough; 4. Filter push plate; 401. Fixed rod; 402. Connecting plate; 403. Reset spring; 405. Sealing baffle; 5. Water inlet connecting pipe; 501. Rotating cylinder; 502. Impeller; 503. Fixed frame; 504. Connecting frame; 505. Reciprocating screw rod; 506. Fixed inner gear ring; 507. Transmission gear; 508. Protection frame; 509. Lifting ring; 510. Stirring plate; 6. Air film; 7 01. circulation sleeve; 702. spacer ring; 7021. ventilation groove; 703. water inlet pipe; 704. water outlet pipe; 8. heat absorption sleeve; 801. extrusion plate; 9. gas storage module; 901. air inlet conveying pipe; 10. water storage tank; 101. water collection frame; 102. water collection box; 103. water collection pipe; 11. water delivery pipe; 111. water delivery hose; 12. sand storage box; 121. sand collection frame; 122. sand outlet pipe; 13. conveying equipment; 131. sand delivery pipe; 14. gas delivery pipe; 15. gas delivery device; 16. lifting device; 17. transmission rod; 18. driving motor. DETAILED DESCRIPTION

[0043] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0044] like Figures 1 to 12 As shown, an air compression device utilizing gravity energy storage includes the following embodiments:

[0045] like Figures 1 to 3 As shown, embodiment 1 includes:

[0046] A placement platform 1 is arranged on the ground, a treatment tank 2 and an air storage module 9 are fixedly connected to the top of the placement platform 1, a lifting and lowering pressure tank 3 is slidably connected inside the treatment tank 2, an air film 6 is fixedly connected between the lifting and lowering pressure tank 3 and the bottom end of the treatment tank 2, a lifting device 16 is fixedly connected to the top of the treatment tank 2, a winding shaft of the lifting device 16 is fixedly connected to the top of the lifting and lowering pressure tank 3 through a steel wire rope, and is used to control the lifting and lowering pressure tank 3 to descend and compress the air inside the air film 6, a plurality of sand flow troughs 301 and a plurality of water flow troughs 302 are provided on the outside of the lifting and lowering pressure tank 3, and the water flow trough 302 is arranged at the lower part of the sand flow trough 301;

[0047] The filter push plate 4 is arranged at the bottom end of the lifting and lowering pressure tank 3 and seals the water flow groove 302. The water inlet connecting pipe 5 is fixedly connected to the inside of the placement platform 1. The water inlet connecting pipe 5 passes through the filter push plate 4 and is slidably connected to the filter push plate 4. A stirring component is arranged outside the water inlet connecting pipe 5.

[0048] A sand storage box 12 is fixedly connected to the top of the placement platform 1, which is used to provide sand and gravel for the lifting and pressure tank 3. A water storage tank 10 is also fixedly connected to the top of the placement platform 1, which is used to provide water to the inside of the lifting and pressure tank 3. When sand and gravel and water are transported to the inside of the lifting and pressure tank 3, the sand and gravel are stirred and mixed by the stirring component.

[0049] It also includes a control module, which is respectively connected to the gas storage module 9, the lifting device 16, the conveying equipment 13, the gas delivery device 15 and the water pump.

[0050] During specific implementation, when the power generation of the power grid is at its peak, the electricity needs to be stored. If the storage device is directly used for storage, there is not much storage space. Therefore, in this scheme, the lifting device 16 is started to pull the lifting and lowering pressure tank 3 up and move it to the upper end of the processing tank 2. Then, the sand and gravel in the sand storage box 12 and the water in the water storage tank 10 are transported to the lifting and lowering pressure tank 3 through the conveying equipment 13 and the water pump. The air inside the air film 6 is compressed by the gravitational potential energy when the lifting and lowering pressure tank 3 descends, and a sensor is provided inside the air film 6 to monitor the air pressure. When the specified pressure is reached, the control valve provided on the outside of the air intake conveying pipe 901 is opened to transport the gas to the inside of the gas storage module 9. When electricity is scarce in the later stage, the gas storage module 9 is connected to the external generator, and the compressed gas inside the gas storage module 9 is released to drive the generator to generate electricity, thereby achieving the effect of energy storage.

[0051] like Figures 4 to 5 As shown, in this embodiment, a conveying device 13 is arranged outside the sand storage box 12, the output end of the conveying device 13 is fixedly connected to the top of the processing tank 2, a sand conveying pipe 131 is fixedly connected between the conveying device 13 and the top of the lifting and lowering pressure tank 3, a water pump is arranged outside the water storage tank 10, the input end of the water pump is fixedly connected to the water storage tank 10 through a first connecting pipe, a water pipe 11 is fixedly connected between the output end of the water pump and the processing tank 2, and a water hose 111 is fixedly connected between the water pipe 11 and the top of the water inlet connecting pipe 5.

[0052] During specific implementation, sand and gravel are transported to the interior of the lifting and lowering pressure tank 3 through the sand transport pipe 131 at one end of the transporting equipment 13, and water is transported to the interior of the water inlet connecting pipe 5 through the water transport hose 111, so that water enters the interior of the lifting and lowering pressure tank 3. The sand transport pipe 131 and the water transport hose 111 are retractable tubes, so that they can be raised and lowered along with the lifting and lowering pressure tank 3.

[0053] like Fig. 9 As shown, embodiment 2: a rotating cylinder 501 is rotatably connected in the middle of the water inlet connecting pipe 5, and both ends of the water inlet connecting pipe 5 are respectively fixedly connected to the bottom and top of the treatment tank 2, and an impeller 502 is fixedly connected inside the rotating cylinder 501. When water passes through the rotating cylinder 501, the rotating cylinder 501 is driven to rotate by the impeller 502. A driving motor 18 is provided on the top of the water inlet connecting pipe 5, and a transmission rod 17 is fixedly connected to the middle of the impeller 502. The transmission rod 17 passes through the top of the water inlet connecting pipe 5 and is rotatably connected to the water inlet connecting pipe 5, and the output shaft of the driving motor 18 is connected to the transmission rod 17 through a clutch.

[0054] In specific implementation, when water and sand and gravel are transported to increase the weight of the lifting and pressure tank 3, since the space of the lifting and pressure tank 3 is limited, if only sand and gravel are filled, there will be a large number of gaps. At the same time, if only water is transported, the weight increase is limited. Therefore, in this scheme, water and sand and gravel are transported, and the gaps between the sand and gravel are fully filled with water, so as to increase the weight of the lifting and pressure tank 3 to the maximum extent within the limited space. The specific gravity of sand and gravel is relatively large, so water flows into the gaps between sand and gravel relatively slowly, affecting the energy storage efficiency. Therefore, a stirring component is added in this scheme, and the water is made to flow quickly into the gaps between the sand and gravel through the stirring component.

[0055] like Figures 6 to 8 As shown, in this embodiment, the stirring assembly includes a plurality of fixed frames 503 fixedly connected to the outside of the rotating cylinder 501, the plurality of fixed frames 503 are fixedly connected to the inside of the plurality of fixed frames 503, the plurality of connecting frames 504 are provided with reciprocating screws 505, the reciprocating screws 505 penetrate the connecting frames 504 and are rotatably connected to the connecting frames 504, a lifting ring 509 is provided between the plurality of connecting frames 504, the plurality of reciprocating screws 505 penetrate the lifting ring 509 and are connected to the lifting ring 509 through a ball nut pair, and the lifting ring 509 is fixedly connected to a plurality of stirring plates 510.

[0056] The stirring assembly also includes a protection frame 508, which is rotatably connected to the top of the lifting and lowering pressure tank 3. A fixed inner gear ring 506 is arranged inside the protection frame 508, and the fixed inner gear ring 506 is fixedly connected to the top of the lifting and lowering pressure tank 3. A plurality of reciprocating screw rods 505 penetrate the protection frame 508 and are rotatably connected to the protection frame 508. The tops of the plurality of protection frames 508 are all fixedly connected to transmission gears 507, and the plurality of transmission gears 507 are all meshedly connected to the fixed inner gear ring 506.

[0057] In specific implementation, when water is transported to the inside of the water inlet connecting pipe 5, the water flows through the rotating cylinder 501, and through the impeller 502 fixedly connected inside the rotating cylinder 501, the water drives the impeller 502 to rotate, and the impeller 502 drives the rotating cylinder 501 to rotate. When the rotating cylinder 501 rotates, it drives the multiple fixed frames 503 fixedly connected to the outside to rotate, and the fixed frames 503 stir the sand and gravel inside the lifting and lowering pressure tank 3 through the connecting frame 504. In this embodiment, by setting a driving motor 18, as the amount of internal sand and gravel increases, the clutch is started at this time to connect the output shaft of the driving motor 18 with the transmission rod 17, so that the transmission rod 17 is driven to rotate by starting the driving motor 18, and then the impeller 502 is driven to rotate, providing the power of stirring, and the water flow is used to provide the initial power to make it rotate. It is worth mentioning that the angle of the blades on the impeller 502 can be used to ensure the normal use of the impeller 502;

[0058] In addition, a reciprocating screw 505 is provided inside the multiple connection frames 504. The reciprocating screw 505 drives the fixedly connected transmission gear 507 to revolve. The transmission gear 507 meshes with the fixed inner gear ring 506 to make the reciprocating screw 505 rotate on itself, and then the lifting ring 509 outside the reciprocating screw 505 is lifted and lowered reciprocatingly, so that the multiple stirring plates 510 fixedly connected to the inner wall of the lifting ring 509 move up and down, thereby further improving the mixing effect of water and sand and gravel, thereby improving the utilization rate of the space inside the lifting and lowering pressure tank 3, thereby increasing the weight of the lifting and lowering pressure tank 3 when it is descending. In order to protect the reciprocating screw 505, a retractable sleeve can be sleeved on the outside of the reciprocating screw 505, and the sleeve is sleeved on the upper and lower sides of the lifting ring 509, so as not to affect the normal lifting of the gas storage module 9.

[0059] like Figure 10 to Figure 11 As shown, embodiment three: a plurality of flow holes for filtering sand and gravel are provided on the top of the filter push plate 4, a sealing baffle 405 corresponding to a plurality of sand flow grooves 301 is fixedly connected to the top of the filter push plate 4, a plurality of fixed rods 401 are fixedly connected to the bottom of the filter push plate 4, the plurality of fixed rods 401 penetrate the lifting and lowering pressure tank 3 and are slidably connected to the lifting and lowering pressure tank 3, a connecting plate 402 is fixedly connected to the bottom of the plurality of fixed rods 401, a return spring 403 is sleeved on the outer side of the plurality of fixed rods 401, and the two ends of the return spring 403 are fixedly connected to the lifting and lowering pressure tank 3 and the connecting plate 402 respectively, a plurality of sand outlet grooves 201 and a plurality of water outlet grooves 202 are provided on the outer side of the processing tank 2, when the lifting and lowering pressure tank 3 descends to the bottom of the processing tank 2, the plurality of sand outlet grooves 201 overlap with the plurality of sand flow grooves 301 respectively, and the plurality of water outlet grooves 202 overlap with the plurality of water flow grooves 302 respectively.

[0060] During specific implementation, when the filter push plate 4 is at the bottom end of the lifting and lowering pressure tank 3, a sealing baffle 405 is fixedly connected to the top of the filter push plate 4 to seal and cover the sand flow groove 301, while the filter push plate 4 seals and blocks the water flow groove 302. As the lifting and lowering pressure tank 3 compresses the air film 6, when the lifting and lowering pressure tank 3 descends to the bottom end of the processing tank 2, the connecting plate 402 at the bottom of the filter push plate 4 contacts the bottom of the lifting and lowering pressure tank 3, and the connecting plate 402 is fixedly connected to the filter push plate 4 through the fixing rod 401. At this time, the fixing rod 401 rises relative to the lifting and lowering pressure tank 3, thereby pushing the filter push plate 4 to move upward through the fixing rod 401. When the filter push plate 4 moves upward, the water flow groove 302 is first exposed, and then the water flow groove 302 is exposed. The filter push plate 4 squeezes the sand and water on the upper part, so that the water quickly passes through the flow hole on the top of the filter push plate 4, and then flows into the outer water collection frame 101 through the water flow trough 302, and finally flows into the water collection box 102 through the water collection pipe 103 for collection; as the filter push plate 4 rises, the sealing baffle 405 is exposed at this time, and the sand and gravel flow through the sand flow trough 301 into the sand collection frame 121 for collection, and the bottom end of the sand collection frame 121 is set to an inclined shape, so that the sand and gravel can flow back to the sand storage box 12 through the sand outlet pipe 122, thereby achieving the effect of separating the sand and gravel, and preparing for the next transportation. When the lifting device 16 is lifted, the lifting and lowering pressure tank 3 can be quickly raised.

[0061] like Fig.10 As shown, embodiment four: a sand collection frame 121 is fixedly connected to the outside of the processing tank 2, the sand collection frame 121 is communicated with the inside of the processing tank 2 through a sand outlet trough 201, a sand outlet pipe 122 is fixedly connected to the bottom of the sand collection frame 121, the sand outlet pipe 122 is fixedly connected to the sand storage box 12, the processing tank 2 is fixedly connected to a water collection frame 101, the water collection frame 101 is communicated through a water outlet trough 202, a water collection box 102 is fixedly connected to the top of the placement platform 1, a water collection pipe 103 is fixedly connected between the water collection frame 101 and the water collection box 102, and the water collection box 102 is fixedly connected to the water storage tank 10 through a second connecting pipe.

[0062] A circulation sleeve 701 is fixedly connected to the bottom of the lifting and lowering pressure tank 3, and the circulation sleeve 701 is sleeved on the outside of the air film 6. A plurality of spacer rings 702 are fixedly connected inside the circulation sleeve 701, and ventilation grooves 7021 are provided on the outsides of the plurality of spacer rings 702. The inner side of the circulation sleeve 701 is fixedly connected to the air film 6, and an air intake pipe 901 is fixedly connected between the air storage module 9 and the bottom of the circulation sleeve 701. A gas delivery device 15 is fixedly connected to the top of the placement platform 1, and an output end of the gas delivery device 15 is connected to a gas delivery pipe 14, which passes through the lifting and lowering pressure tank 3 and is fixedly connected to the air film 6. A heat absorption sleeve 8 is sleeved on the outside of the circulation sleeve 701, and an extrusion plate 801 is fixedly connected to the bottom of the heat absorption sleeve 8, and the extrusion plate 801 is fixedly connected to the connecting plate 402. The top of the heat absorption sleeve 8 is fixedly connected to the lifting and lowering pressure tank 3, and the outside of the heat absorption sleeve 8 is fixedly connected with a water inlet pipe 703 for water inlet and a water outlet pipe 704 for water outlet.

[0063] In specific implementation, when the lowering pressure tank 3 lowers the air film 6, the compressed air will do work, and work will inevitably generate heat. When the air film 6 is compressed, the air with heat will flow into the upper part of the circulation sleeve 701 by opening the control valve on the outside of the air intake conveying pipe 901, and pass through the spacer ring 702 to separate the layers, thereby increasing the flow path of the gas, and finally pass through the air intake conveying pipe 901 to fill the inside of the gas storage module 9, and a heat absorption sleeve 8 is provided on the outside of the circulation sleeve 701, and water for absorbing heat is stored in the heat absorption sleeve 8. When the gas flows from the inside of the circulation sleeve 701, the water fully absorbs the heat in the gas. When the connecting plate 402 descends and contacts the bottom end of the processing tank 2, due to the extrusion plate 801 and the connecting plate 402 is fixedly connected, and the top of the heat absorption sleeve 8 is fixedly connected to the lifting and lowering pressure tank 3. When the connecting plate 402 rises relative to the lifting and lowering pressure tank 3, the extrusion plate 801 will squeeze the heat absorption sleeve 8, so that the internal heated water is discharged through the outlet pipe 704. When the lifting and lowering pressure tank 3 rises, the connecting plate 402 is no longer in contact with the bottom end of the processing tank 2. The return spring 403 sleeved on the outside of the fixed rod 401 pushes the connecting plate 402 to descend, and then the water inside the water inlet pipe 703 is sucked into the heat absorption sleeve 8 through the negative pressure, and is automatically replenished and discharged. In addition, one-way valves are respectively installed on the outside of the water inlet pipe 703 and the water outlet pipe 704, so as to collect the heat in the compressed air and improve the utilization rate.

[0064] The present invention also provides an operating method of an air compression device utilizing gravity energy storage, comprising the following steps:

[0065] Step 1: When the power grid is at its peak, the control module is used to control the lifting device 16 to pull the lifting and lowering pressure tank 3 upward and move it to the upper end of the processing tank 2;

[0066] Step 2: Start the conveying device 13 and the water pump to convey water and sand and gravel into the lifting and lowering pressure tank 3, and drive the stirring component through the impact of water to fully mix the water and sand and gravel;

[0067] Step 3: Inflate the air film 6 through the air delivery device 15. After the inflation is completed, the lifting and lowering pressure tank 3 is released to squeeze the gas inside the lifting and lowering pressure tank 3. When the gas is compressed to a specified pressure, it is delivered to the inside of the gas storage module 9.

[0068] Step 4: When the lifting and lowering pressure tank 3 moves to the bottom, the filter push plate 4 squeezes the water and sand upward, so that the water and sand are separated and flow out from the sand flow trough 301 and the water flow trough 302 respectively.

[0069] Meanwhile, the contents not described in detail in this specification belong to the prior art known to those skilled in the art.

[0070] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0071] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An air compression device utilizing gravity energy storage, characterized in that: include: A placement platform (1) is arranged on the ground, the top of the placement platform (1) is fixedly connected with a treatment tank (2) and an air storage module (9), the inside of the treatment tank (2) is slidably connected with a lifting and lowering pressure tank (3), an air film (6) is fixedly connected between the lifting and lowering pressure tank (3) and the bottom end of the inside of the treatment tank (2), the top of the treatment tank (2) is fixedly connected with a lifting device (16), the winding shaft of the lifting device (16) is fixedly connected to the top of the lifting and lowering pressure tank (3) through a steel wire rope, and is used to control the lifting and lowering pressure tank (3) to descend to compress the air inside the air film (6), and the outside of the lifting and lowering pressure tank (3) is provided with a plurality of sand flow troughs (301) and a plurality of water flow troughs (302), and the water flow troughs (302) are arranged at the bottom of the sand flow troughs (301); A filter push plate (4), the filter push plate (4) being arranged at the bottom end of the lifting and lowering pressure tank (3) and sealing the water flow channel (302), the placement platform (1) being internally fixedly connected with a water inlet connecting pipe (5), the water inlet connecting pipe (5) penetrating the filter push plate (4) and being slidably connected to the filter push plate (4), and a stirring component being arranged outside the water inlet connecting pipe (5); The top of the placement platform (1) is fixedly connected to a sand storage box (12) for providing sand and gravel to the lifting and lowering pressure tank (3). The top of the placement platform (1) is also fixedly connected to a water storage tank (10) for providing water to the inside of the lifting and lowering pressure tank (3). When the sand and gravel and water are transported to the inside of the lifting and lowering pressure tank (3), the sand and gravel are stirred and mixed with the water by a stirring component. The top of the filter push plate (4) is provided with a plurality of flow holes for filtering sand and gravel. The top of the filter push plate (4) is fixedly connected with a sealing baffle (405) corresponding to the plurality of sand flow troughs (301) one by one. The bottom of the filter push plate (4) is fixedly connected with a plurality of fixing rods (401). The plurality of fixing rods (401) penetrate the lifting and lowering pressure tank (3) and are slidably connected to the lifting and lowering pressure tank (3). The bottom of the plurality of fixing rods (401) is fixedly connected with a connecting plate (402). The outer sides of the plurality of fixing rods (401) are A return spring (403) is sleeved on each of the two ends of the return spring (403), and the two ends of the return spring (403) are respectively fixedly connected to the lifting and lowering pressure tank (3) and the connecting plate (402). A plurality of sand outlet grooves (201) and a plurality of water outlet grooves (202) are provided on the outside of the processing tank (2). When the lifting and lowering pressure tank (3) descends to the bottom of the processing tank (2), the plurality of sand outlet grooves (201) respectively overlap with the plurality of sand flow grooves (301) in a one-to-one correspondence, and the plurality of water outlet grooves (202) respectively overlap with the plurality of water flow grooves (302) in a one-to-one correspondence.

2. The air compression device utilizing gravity energy storage according to claim 1, characterized in that: A conveying device (13) is arranged outside the sand storage box (12), the output end of the conveying device (13) is fixedly connected to the top of the processing tank (2), a sand conveying pipe (131) is fixedly connected between the conveying device (13) and the top of the lifting and lowering pressure tank (3), a water pump is arranged outside the water storage tank (10), the input end of the water pump is fixedly connected to the water storage tank (10) through a first connecting pipe, a water delivery pipe (11) is fixedly connected between the output end of the water pump and the processing tank (2), and a water delivery hose (111) is fixedly connected between the water delivery pipe (11) and the top of the water inlet connecting pipe (5).

3. The air compression device utilizing gravity energy storage according to claim 1, characterized in that: A rotating cylinder (501) is rotatably connected in the middle of the water inlet connecting pipe (5), and both ends of the water inlet connecting pipe (5) are respectively fixedly connected to the bottom and top of the treatment tank (2). An impeller (502) is fixedly connected inside the rotating cylinder (501). When water passes through the rotating cylinder (501), the impeller (502) drives the rotating cylinder (501) to rotate. A driving motor (18) is arranged at the top of the water inlet connecting pipe (5), and a transmission rod (17) is fixedly connected in the middle of the impeller (502). The transmission rod (17) passes through the top of the water inlet connecting pipe (5) and is rotatably connected to the water inlet connecting pipe (5). The output shaft of the driving motor (18) and the transmission rod (17) are connected via a clutch.

4. The air compression device utilizing gravity energy storage according to claim 3, characterized in that: The stirring assembly comprises a plurality of fixed frames (503) fixedly connected to the outside of the rotating cylinder (501), the plurality of fixed frames (503) are each fixedly connected to a connecting frame (504), the plurality of connecting frames (504) are each provided with a reciprocating screw (505), the reciprocating screw (505) passes through the connecting frame (504) and is rotatably connected to the connecting frame (504), a lifting ring (509) is provided between the plurality of connecting frames (504), the plurality of reciprocating screws (505) pass through the lifting ring (509) and are connected to the lifting ring (509) via a ball nut pair, and the lifting ring (509) is fixedly connected to a plurality of stirring plates (510).

5. The air compression device utilizing gravity energy storage according to claim 4, characterized in that: The stirring assembly also includes a protection frame (508), the protection frame (508) is rotatably connected to the top of the interior of the lifting and lowering pressure tank (3), a fixed inner gear ring (506) is arranged inside the protection frame (508), the fixed inner gear ring (506) is fixedly connected to the top of the interior of the lifting and lowering pressure tank (3), a plurality of reciprocating screw rods (505) penetrate the protection frame (508) and are rotatably connected to the protection frame (508), the tops of the plurality of protection frames (508) are all fixedly connected to transmission gears (507), and the plurality of transmission gears (507) are all meshingly connected to the fixed inner gear ring (506).

6. The air compression device utilizing gravity energy storage according to claim 1, characterized in that: The outside of the processing tank (2) is fixedly connected to a sand collecting frame (121), the sand collecting frame (121) is communicated with the inside of the processing tank (2) through a sand outlet groove (201), the bottom of the sand collecting frame (121) is fixedly connected to a sand outlet pipe (122), the sand outlet pipe (122) is fixedly connected to a sand storage box (12), the processing tank (2) is fixedly connected to a water collecting frame (101), the water collecting frame (101) is connected through a water outlet groove (202), the top of the placement platform (1) is fixedly connected to a water collecting box (102), a water collecting pipe (103) is fixedly connected between the water collecting frame (101) and the water collecting box (102), and the water collecting box (102) is fixedly connected to a water storage tank (10) through a second connecting pipe.

7. The air compression device utilizing gravity energy storage according to claim 6, characterized in that: The bottom of the lifting and lowering pressure tank (3) is fixedly connected to a circulation sleeve (701), the circulation sleeve (701) is sleeved on the outside of the air film (6), the inside of the circulation sleeve (701) is fixedly connected to a plurality of spacer rings (702), and the outsides of the plurality of spacer rings (702) are provided with ventilation grooves (7021), the inside of the circulation sleeve (701) is fixedly connected to the air film (6), the air storage module (9) and the bottom of the circulation sleeve (701) are fixedly connected to an air intake pipe (901), the top of the placement platform (1) is fixedly connected to a gas delivery device (15), and the The output end of the gas delivery device (15) is connected to a gas delivery pipe (14), the gas delivery pipe (14) passes through the lifting and lowering pressure tank (3) and is fixedly connected to the gas film (6), the outer side of the circulation sleeve (701) is provided with a heat absorption sleeve (8), the bottom of the heat absorption sleeve (8) is fixedly connected to an extrusion plate (801), the extrusion plate (801) is fixedly connected to the connecting plate (402), the top of the heat absorption sleeve (8) is fixedly connected to the lifting and lowering pressure tank (3), and the outer side of the heat absorption sleeve (8) is fixedly connected to a water inlet pipe (703) for water inlet and a water outlet pipe (704) for water outlet.

8. The air compression device utilizing gravity energy storage according to claim 1, characterized in that: It also includes a control module, which is respectively connected to the gas storage module (9), the lifting device (16), the conveying equipment (13), the water storage tank (10), the gas delivery device (15) and the water pump.

9. An operating method of an air compression device utilizing gravity energy storage, applicable to an air compression device utilizing gravity energy storage as claimed in any one of claims 1 to 8, characterized in that: The following steps are involved: Step 1: When the power generation of the power grid is at its peak, the control module is used to control the lifting device (16) to start the lifting and lowering pressure tank (3) to rise and move it to the upper end of the processing tank (2); Step 2: Start the conveying device (13) and the water pump to convey water and sand and gravel into the lifting and lowering pressure tank (3), and drive the stirring component through the impact of water to fully mix the water and sand and gravel; Step 3: Inflate the air film (6) through the air delivery device (15), and after the inflation is completed, release the lifting and lowering pressure tank (3) to squeeze the gas inside the lifting and lowering pressure tank (3), and when it is compressed to a specified pressure, deliver it to the inside of the gas storage module (9); Step 4: When the lifting and lowering pressure tank (3) moves to the bottom, the filter push plate (4) squeezes the water and sand upward, so that the water and sand are separated and flow out from the sand flow trough (301) and the water flow trough (302) respectively.

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