Efficient compressed air energy storage system

Abstract

The utility model relates to the technical field of electric power energy storage, and discloses an efficient compressed air energy storage system which comprises an energy storage mechanism, the energy storage mechanism comprises an energy storage tank, the bottom end of the energy storage tank is buried in soil, the outer side of the energy storage tank is connected with a ground retaining ring, and the ground retaining ring is located above the ground and tightly attached to the ground. A partition piece and a rubber ring used for sealing are installed in the energy storage tank in a sliding mode, the partition piece divides the energy storage tank into an upper movement space and a lower air storage space, the lower portion of the energy storage tank is connected with two air passing pipelines, and after air enters the air storage space in the lower portion of the energy storage tank, the partition piece and a balancing weight can be jacked and moved upwards, so that the energy storage tank can move upwards. When air is exhausted, the balancing weight can exert extra pressure on the partition piece, the air outlet pressure is guaranteed, and compared with the prior art, the device is simpler in structure, few in exposed parts, not prone to damage and aging and easier to maintain.

Description

Technical Field

[0001] The utility model relates to the technical field of electric energy storage, in particular to a highly efficient compressed air energy storage system. Background Art

[0002] Although the existing compressed air energy storage equipment has been continuously innovated and developed and basically meets people's needs, there is still room for improvement.

[0003] For example, the patent document with announcement number CN210003472U discloses a high-efficiency constant-pressure compressed air energy storage system, including a concrete floor, a support column, a top plate, a left side plate, a servo motor, a rotating shaft, a reel, a right side plate, a bearing seat, a support shaft, a steel wire rope, an outer barrel, an air inlet, an air outlet, a one-way valve, a flange, a sealing ring, an inner barrel, a concrete block, a lifting ring and a stabilizing component, wherein the left and right sides of the top of the concrete floor are fixedly connected with support columns. Through the cooperation of the concrete floor, the support column, the top plate, the left side plate, the servo motor, the rotating shaft, the reel, the right side plate, the bearing seat, the support shaft, the steel wire rope, the outer barrel, the air inlet, the air outlet, the one-way valve, the inner flange, the sealing ring, the inner barrel, the concrete block, the lifting ring and the stabilizing component, the phenomenon of rapid pressure drop in the storage space can be completely avoided, and a very high pressure output can be provided from the beginning to the end, which has strong practicality.

[0004] Although the above-mentioned compressed air equipment can increase the air pressure intensity at the end of the exhaust by dropping the counterweight, its operation requires a motor to continuously pull the counterweight, which not only consumes excess energy during use, but also the mechanical parts are easily damaged and worn, increasing the difficulty of maintenance for the staff. There are still certain inconveniences in actual use. Therefore, an efficient compressed air energy storage system is urgently needed to solve the above problems. Utility Model Content

[0005] In order to overcome the above-mentioned technical problems, the purpose of the utility model is to provide an efficient compressed air energy storage system to solve the above-mentioned compressed air equipment proposed in the above-mentioned background technology. Although the air pressure intensity at the end of the air outlet can be increased by a falling counterweight, during its operation, a motor is required to continuously pull the counterweight, which not only consumes excess energy during use, but also the mechanical parts are easily damaged and worn, which increases the difficulty of maintenance for the staff, and there are still certain inconveniences in actual use.

[0006] The utility model provides the following technical solutions: an efficient compressed air energy storage system, comprising an energy storage mechanism, the energy storage mechanism comprising an energy storage tank, and the bottom end of the energy storage tank is buried in the soil, the outer side of the energy storage tank is connected to a ground retaining ring, and the ground retaining ring is located above the ground and close to the ground, the interior of the energy storage tank is slidably installed with a separator and a rubber ring for sealing on the outer side thereof, and the separator divides the energy storage tank into an upper movement space and a lower air storage space, the lower part of the energy storage tank is connected to two air pipelines, and the air pipelines are provided with electric control valves, which are respectively used for air intake and air outlet, and the top end of the separator is connected to a counterweight block that can move in the upper space of the energy storage tank;

[0007] The oil lubrication mechanism is arranged inside the energy storage tank.

[0008] To implement the above technical solution, after air enters the gas storage space at the bottom of the energy storage tank, the separator and the counterweight block can be lifted and moved upward. When the gas is discharged, the counterweight block will exert additional pressure on the separator to ensure the gas outlet pressure. Compared with the prior art, the structure of the device is simpler, with fewer exposed parts, is less prone to damage and aging, and is easier to maintain.

[0009] Furthermore, an exhaust pipe is connected to the outer side of the upper space of the energy storage tank for communicating with the inside and outside, and the exhaust pipe is L-shaped with its opening facing the ground.

[0010] By implementing the above technical solution, the compressed gas in the upper movement space of the energy storage tank can be discharged.

[0011] Furthermore, a limiting groove is provided at the top end of the counterweight block, a limiting rod is inserted into the limiting groove, and the top end of the limiting rod is connected to the inner surface of the energy storage tank.

[0012] To implement the above technical solution, the limiting effect of the limiting rod and the limiting groove is utilized to improve the guidance and stability of the movement of the counterweight.

[0013] Furthermore, the lubrication mechanism includes an oil pipe, which is embedded in the energy storage tank and always located above the partition plate. The end of the oil pipe is connected to a connector with a sealing plug for docking with the lubricating oil bottle.

[0014] To implement the above technical solution, oil can be input into the energy storage tank through the oil pipeline to help the separator and the rubber ring move smoothly and increase the sealing effect.

[0015] Furthermore, a ramp seat is connected to the partition plate at the bottom end of the oil pipeline for guiding the oil.

[0016] Implementing the above technical solution makes it easier for oil to move to the point where the rubber ring is in close contact with the inner wall of the energy storage tank.

[0017] Furthermore, a grooved ring frame is connected to the inner surface of the energy storage tank at the bottom end of the oil pipeline, and oil leakage holes are evenly opened at the bottom end of the grooved ring frame, and the maximum rising stroke of the separator is always located at the bottom end of the grooved ring frame.

[0018] To implement the above technical solution, the grooved ring frame can make it easier for the oil to be dispersed on the inner wall of the energy storage tank.

[0019] Technical effects and advantages of the utility model:

[0020] 1. The utility model adopts the method that after air enters the gas storage space at the lower part of the energy storage tank, the separator and the counterweight block can be lifted and moved upward, and when the air is discharged, the counterweight block will apply additional pressure to the separator to ensure the outlet pressure.

[0021] 2. Compared with the prior art, the structure of the device of the utility model is simpler, and there are fewer exposed parts, which is less prone to damage and aging, and is easier to maintain. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a top three-dimensional schematic diagram of the overall structure of the utility model in an exploded state.

[0023] Figure 2 It is a top three-dimensional schematic diagram of the overall structure of the utility model.

[0024] Figure 3 It is a bottom-up stereoscopic schematic diagram of the overall structure of the utility model.

[0025] Figure 4 It is a bottom-up stereoscopic schematic diagram of the groove ring frame structure of the utility model.

[0026] The accompanying drawings are marked as follows: 1. energy storage mechanism; 110. energy storage tank; 111. ground retaining ring; 112. air duct; 113. separator; 114. rubber ring; 115. counterweight; 116. limit groove; 117. limit rod; 118. exhaust pipe; 2. oil lubrication mechanism; 210. oil pipeline; 211. ramp seat; 212. groove ring frame. DETAILED DESCRIPTION

[0027] The technical solution of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the present invention.

[0028] Embodiment 1:

[0029] Refer to the attached drawings in the specification Figure 1-3The utility model provides an efficient compressed air energy storage system, including an energy storage mechanism 1, the energy storage mechanism 1 includes an energy storage tank 110, and the bottom end of the energy storage tank 110 is buried in the soil, the outer side of the energy storage tank 110 is connected to a ground retaining ring 111, and the ground retaining ring 111 is located above the ground and close to the ground, the energy storage tank 110 is slidably installed with a separator 113 and a rubber ring 114 for sealing on the outer side, and the separator 113 divides the energy storage tank 110 into an upper movement space and a lower gas storage space, the lower part of the energy storage tank 110 is connected to two air pipelines 112, and the air pipelines 112 are provided with electric control valves for air intake and air outlet, respectively, and the top of the separator 113 is connected to a counterweight block 115 that can move in the upper space of the energy storage tank 110;

[0030] The lubrication mechanism 2 is arranged inside the energy storage tank 110. An exhaust pipe 118 is connected to the outside of the upper space of the energy storage tank 110 for passing through the inside and outside. The exhaust pipe 118 is L-shaped with its opening facing the ground. A limiting groove 116 is provided at the top of the counterweight block 115. A limiting rod 117 is inserted into the limiting groove 116, and the top of the limiting rod 117 is connected to the inner surface of the energy storage tank 110.

[0031] When in use, one of the air passages 112 starts to take in air, so that the air pressure in the air storage space at the lower part of the energy storage tank 110 gradually increases, so that the partition sheet 113 and the rubber ring 114 move upward, and the counterweight 115 moves upward in the upper movement space of the energy storage tank 110, and the air in the upper space is squeezed out from the limit rod 117;

[0032] At the same time, when exhaust begins through the other air duct 112 , the counterweight 115 exerts additional pressure on the partition plate 113 due to its own weight when pressing downward.

[0033] Embodiment 2:

[0034] Refer to the attached drawings in the specification Figure 4 The difference between the second embodiment and the first embodiment is that the lubricating mechanism 2 includes an oil delivery pipe 210, which is embedded and installed on the energy storage tank 110 and is always located above the separator 113. The end of the oil delivery pipe 210 is connected with a connector with a sealing plug for docking with the lubricating oil bottle. The separator 113 at the bottom end of the oil delivery pipe 210 is connected with a ramp seat 211 for guiding oil. A groove ring frame 212 is connected to the inner surface of the energy storage tank 110 at the bottom end of the oil delivery pipe 210, and oil leakage holes are evenly opened on the bottom end of the groove ring frame 212. The maximum rising stroke of the separator 113 is always located at the bottom end of the groove ring frame 212.

[0035] When shutting down for maintenance, the sealing plug at the end of the oil pipe 210 can be removed, and the lubricating oil bottle can be connected to it. The oil bottle can be squeezed so that the oil flows along the oil pipe 210 into the energy storage tank 110 and into the groove ring frame 212, and finally the oil is dispersed from the oil leakage hole to the inner wall of the energy storage tank 110.

[0036] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or basic features of the present invention. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the present invention.

Claims

1. An efficient compressed air energy storage system, comprising an energy storage mechanism (1), wherein the energy storage mechanism (1) comprises an energy storage tank (110), and the bottom end of the energy storage tank (110) is buried in soil, characterized in that: The outer side of the energy storage tank (110) is connected to a ground retaining ring (111), and the ground retaining ring (111) is located above the ground and in close contact with the ground. A separator (113) and a rubber ring (114) for sealing on the outer side are slidably mounted inside the energy storage tank (110), and the separator (113) divides the energy storage tank (110) into an upper movement space and a lower gas storage space. The lower part of the energy storage tank (110) is connected to two air pipelines (112), and the air pipelines (112) are provided with electric control valves for air intake and air outlet, respectively. The top end of the separator (113) is connected to a counterweight (115) that can move in the upper space of the energy storage tank (110); An oil lubrication mechanism (2), wherein the oil lubrication mechanism (2) is arranged inside the energy storage tank (110).

2. An efficient compressed air energy storage system according to claim 1, characterized in that: An exhaust pipe (118) is connected to the outer side of the upper space of the energy storage tank (110) for connecting the inside and the outside, and the exhaust pipe (118) is L-shaped with its opening facing the ground.

3. An efficient compressed air energy storage system according to claim 1, characterized in that: A limiting groove (116) is provided at the top end of the counterweight block (115), a limiting rod (117) is inserted into the limiting groove (116), and the top end of the limiting rod (117) is connected to the inner surface of the energy storage tank (110).

4. An efficient compressed air energy storage system according to claim 1, characterized in that: The lubrication mechanism (2) comprises an oil delivery pipe (210), the oil delivery pipe (210) being embedded and installed on the energy storage tank (110) and always located above the partition sheet (113), and a connector with a sealing plug being connected at the end of the oil delivery pipe (210) for docking with a lubricating oil bottle.

5. An efficient compressed air energy storage system according to claim 4, characterized in that: A slope seat (211) is connected to the partition sheet (113) at the bottom end of the oil delivery pipe (210) for guiding oil.

6. An efficient compressed air energy storage system according to claim 5, characterized in that: A grooved ring frame (212) is connected to the inner surface of the energy storage tank (110) at the bottom end of the oil delivery pipe (210), and oil leakage holes are evenly opened at the bottom end of the grooved ring frame (212), and the maximum rising stroke of the partition plate (113) is always located at the bottom end of the grooved ring frame (212).

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