A mine underground roadway compressed air energy storage device

Abstract

The utility model discloses a kind of mine underground roadway compressed air energy storage devices, a kind of mine underground roadway compressed air energy storage devices, including mine underground roadway, two first partition wall and two second partition wall, characterized in that, every the second partition wall side wall is fixedly connected with mine underground roadway inner wall, first sealing box is fixedly connected with the second partition wall one end side wall, first piston is sealingly slidably connected in the first sealing box inner wall, second sealing box is fixedly connected with the second partition wall other end side wall, second piston is sealingly slidably connected in the second sealing box inner wall, the through hole is through second partition wall and the one end side wall of second sealing box. The utility model will be discharged after excess air pressure, first piston resets under the pressure effect in second partition wall, so that second piston moves downward, so as to drive third piston to seal sliding downward, complete the plugging of pressure relief passage, avoid air pressure continuous leakage.

Description

Technical Field

[0001] This utility model relates to the field of compressed air energy storage technology, and in particular to a compressed air energy storage device for underground mine roadways. Background Technology

[0002] Mines include coal mines, metallic mines, non-metallic mines, and mineral chemical mines. During mining operations, pneumatic tools are used extensively to improve efficiency and safety, resulting in a large consumption of compressed air. However, this compressed air is generated by motor-driven compressors, consuming a significant amount of electricity during the production process.

[0003] Current compressed air energy storage devices require internal pressure monitoring to prevent excessive internal pressure. Therefore, during use, staff need to monitor internal pressure changes in real time, increasing workload. In addition, when the internal pressure becomes too high, manual depressurization is required, increasing costs and limiting the device's capabilities. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a compressed air energy storage device for underground mine roadways.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A compressed air energy storage device for underground mine roadways includes an underground mine roadway, two first partition walls, and two second partition walls. The device is characterized in that each second partition wall sidewall is fixedly connected to the inner wall of the underground mine roadway; a first sealing box is fixedly connected to one end of the second partition wall sidewall; a first piston is slidably connected to the inner wall of the first sealing box; a second sealing box is fixedly connected to the other end of the second partition wall sidewall; a second piston is slidably connected to the inner wall of the second sealing box; a through hole is provided in the sidewall of the first sealing box, penetrating one end of the second partition wall and the second sealing box; a pressure relief channel is fixedly connected to each second partition wall sidewall; a third piston is slidably connected to the inner wall of the pressure relief channel; a connecting rod is symmetrically fixedly connected to the top of each second piston; two connecting rods are jointly fixedly connected to a connecting plate; and the connecting plate is fixedly connected to the bottom end of the third piston.

[0007] Preferably, each of the two side walls of the first partition wall 2 is fixedly connected to the inner wall of the underground mine roadway 1, each of the first partition walls 2 is fixedly connected to the second partition wall 3, and each of the side walls of the first partition wall 2 is fixedly connected to the side wall of the underground mine roadway 1.

[0008] Preferably, each of the pressure relief channels is symmetrically fixedly connected to a spring at its bottom end, and one end of each spring is fixedly connected to the top end of the connecting plate.

[0009] Preferably, an air compressor is fixedly connected to the bottom end of one of the first partition walls, and an air inlet pipe is fixedly connected to one end of the air compressor.

[0010] Preferably, a control valve is installed inside the air intake pipe, and one end of the air intake pipe passes through the second partition wall.

[0011] Preferably, one of the inner walls of the first partition wall is fixedly connected to a gas pipe, a control valve is installed inside the gas pipe, and a pressure detector is fixedly connected through the inner wall of the first partition wall.

[0012] The beneficial effects of this utility model are:

[0013] 1. When the pressure between the second partition walls is too high, the internal pressure pushes the two first pistons downward. Because the first piston slides in a sealed manner with the first sealing box and the second piston slides in a sealed manner with the second sealing box, the first piston and the second piston are sealed. During the downward movement of the first piston, the pressure between the first piston and the second piston is used to make the second piston move upward. Through the two connecting rods, the third piston moves upward until the bottom of the third piston leaves the pressure relief channel. This allows the excess air pressure between the second partition walls to enter the pressure relief channel and be discharged through the pressure relief pipe, thus completing the pressure relief.

[0014] 2. After the excess air pressure is released, the first piston resets under the pressure inside the second partition wall, causing the second piston to move downward, which in turn drives the third piston to slide downward to seal and block the pressure relief channel, thus preventing continuous air pressure leakage. Attached Figure Description

[0015] Figure 1 This is a three-dimensional cross-sectional view of a compressed air energy storage device for underground mine roadways proposed in this utility model.

[0016] Figure 2 This is a three-dimensional structural diagram of the first and second partition walls in a compressed air energy storage device for underground mine roadways proposed in this utility model.

[0017] Figure 3 This is a three-dimensional structural diagram of a compressed air energy storage device for underground mine roadways proposed in this utility model.

[0018] Figure 4 This is a three-dimensional structural diagram of a compressed air energy storage device for underground mine roadways, as shown from below.

[0019] In the diagram: 1. Mine underground roadway; 2. First partition wall; 3. Second partition wall; 4. First sealing box; 5. First piston; 6. Second sealing box; 7. Second piston; 8. Through hole; 9. Connecting rod; 10. Connecting plate; 11. Pressure relief channel; 12. Third piston; 13. Spring; 14. Pressure relief pipe; 15. Air compressor; 16. Inlet pipe; 17. Air supply pipe; 18. Air pressure detector. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0021] Reference Figures 1-4 A compressed air energy storage device for underground mine roadways includes an underground mine roadway 1, two first partition walls 2, and two second partition walls 3. The device is characterized in that each second partition wall 3 has its sidewall fixedly connected to the inner wall of the underground mine roadway 1. A first sealing box 4 is fixedly connected to one sidewall of the second partition wall 3, and a first piston 5 is slidably connected to the inner wall of the first sealing box 4. A second sealing box 6 is fixedly connected to the other sidewall of the second partition wall 3, and a second piston 7 is slidably connected to the inner wall of the second sealing box 6. A through hole 8 is provided on the sidewall of the first sealing box 4, penetrating one sidewall of the second partition wall 3 and the second sealing box 6. A pressure relief channel 11 is fixedly connected to the sidewall of each second partition wall 3, with one end of the pressure relief channel 11 being a closed structure. A third piston 12 is slidably connected to the inner wall of the pressure relief channel 11. A connecting rod 9 is symmetrically fixedly connected to the top of each second piston 7, and two connecting rods 9 are jointly fixedly connected to a connecting plate 10. The connecting plate 10 is fixedly connected to the bottom end of the third piston 12.

[0022] Each first partition wall 2 is fixedly connected to the inner wall of the underground mine roadway 1, and each first partition wall 2 is fixedly connected to the second partition wall 3, thereby forming a gas storage space between the underground mine roadway 1, the first partition wall 2 and the second partition wall 3. The two side walls of the two first partition walls 2 are fixedly connected to the side walls of the underground mine roadway 1, and the remaining two side walls are left with gaps between them and the underground mine roadway 1.

[0023] Each pressure relief channel 11 is symmetrically fixedly connected to a spring 13 at its bottom end. One end of each spring 13 is fixedly connected to the top end of the connecting plate 10. During the sealing process, the elastic force provided by the spring 13 pushes the third piston 12 to reset.

[0024] An air compressor 15 is fixedly connected to the bottom of one of the first partition walls 2, and an air inlet pipe 16 is fixedly connected to one end of the air compressor 15. A control valve is installed inside the air inlet pipe 16, and one end of the air inlet pipe 16 passes through the second partition wall 3. When the electricity price is flat or low, the air compressor 15 is turned on and the air inlet control valve in the air inlet pipe 16 is opened to store compressed air in the second partition wall 3. When the pressure value in the second partition wall 3 reaches the design value, the control valve in the air inlet pipe 16 and the air compressor 15 are closed.

[0025] The inner wall of the first partition wall 2 is fixedly connected to a gas supply pipe 17. A control valve is installed inside the gas supply pipe 17. When gas is needed in the mine, the control valve inside the gas supply pipe 17 is opened, and compressed air is delivered to the mine through the gas supply pipe 17. A pressure detector 18 is fixedly connected through the inner wall of the first partition wall 2. The pressure detector 18 is used to detect the pressure in the sealed chamber.

[0026] In this invention, during operation, when electricity prices are flat or low, the air compressor 15 is turned on and the intake control valve in the intake pipe 16 is opened to store compressed air in the sealed chamber enclosed by the first partition wall 2 and the second partition wall 3. The air pressure in the sealed chamber is detected by the air pressure detector 18. When the pressure value in the sealed chamber reaches the design value, the control valve in the intake pipe 16 and the air compressor 15 are closed. When the mine needs air, the control valve in the air supply pipe 17 is opened to supply compressed air to the mine.

[0027] During compressed air storage, when the pressure inside the sealed cavity enclosed by the first partition wall 2 and the second partition wall 3 becomes excessive, the internal pressure pushes the two first pistons 5 downwards. Because the first piston 5 slides in a sealed manner with the first sealing box 4, and the second piston 7 slides in a sealed manner with the second sealing box 6, a seal is formed between the first piston 5 and the second piston 7. During the downward movement of the first piston 5, the pressure between the first piston 5 and the second piston 7 causes the second piston 7 to move upwards. This, in turn, drives the third piston 12 upwards via the two connecting rods 9, until the bottom of the third piston 12 leaves the pressure relief channel 11. This allows the excess air pressure inside the sealed cavity enclosed by the first partition wall 2 and the second partition wall 3 to enter the pressure relief channel 11. 1. Finally, the compressed air is discharged through the pressure relief pipe 14, thus completing the pressure relief. The two side walls of the two first partition walls 2 are fixedly connected to the side walls of the underground mine roadway 1, and the other two side walls are left with gaps between them and the underground mine roadway 1, so as to ensure that the air pressure above the first piston 5 and the second piston 7 is not consistent. After the excess compressed air is discharged, the first piston 5 is reset under the action of the air pressure in the sealed cavity enclosed by the first partition wall 2 and the second partition wall 3, so that the second piston 7 moves downward, thereby driving the third piston 12 to slide downward to seal and complete the sealing of the pressure relief channel 11, preventing the continuous leakage of compressed air. During the sealing process, the elastic force provided by the spring 13 pushes the third piston 12 to reset.

[0028] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A mine underground roadway compressed air energy storage device, comprising a mine underground roadway (1), two first partition walls (2) and two second partition walls (3), characterized in that, Each of the second partition walls (3) is fixedly connected to the inner wall of the underground roadway (1) of the mine. A first sealing box (4) is fixedly connected to one side wall of the second partition wall (3). A first piston (5) is slidably connected to the inner wall of the first sealing box (4). A second sealing box (6) is fixedly connected to the other side wall of the second partition wall (3). A second piston (7) is slidably connected to the inner wall of the second sealing box (6). A through hole (8) is opened on the side wall of the first sealing box (4). The through hole (8) passes through one side wall of the second partition wall (3) and the second sealing box (6). A pressure relief channel (11) is fixedly connected to each side wall of the second partition wall (3). A third piston (12) is slidably connected to the inner wall of the pressure relief channel (11). A connecting rod (9) is symmetrically fixedly connected to the top of each second piston (7). A connecting plate (10) is fixedly connected to both connecting rods (9). The connecting plate (10) is fixedly connected to the bottom of the third piston (12).

2. The mine underground roadway compressed air energy storage device according to claim 1, characterized in that, Each of the first partition walls (2) has two side walls that are fixedly connected to the inner wall of the underground roadway (1) of the mine, each of the first partition walls (2) has a fixed connection to the second partition wall (3), and each of the side walls of the first partition walls (2) has a fixed connection to the side wall of the underground roadway (1) of the mine.

3. The mine underground roadway compressed air energy storage device according to claim 1, characterized in that, Each of the pressure relief channels (11) is symmetrically fixedly connected to a spring (13) at its bottom end, and one end of each spring (13) is fixedly connected to the top end of the connecting plate (10).

4. The mine underground roadway compressed air energy storage device according to claim 1, characterized in that, An air compressor (15) is fixedly connected to the bottom of one of the first partition walls (2), and an air inlet pipe (16) is fixedly connected to one end of the air compressor (15).

5. A mine underground roadway compressed air energy storage device according to claim 4, characterised in that, The intake pipe (16) is equipped with a control valve, and one end of the intake pipe (16) passes through the second partition wall (3).

6. The mine underground roadway compressed air energy storage device according to claim 1, characterized in that, One of the first partition walls (2) has a fixed connection to a useful air pipe (17) on its inner wall. A control valve is installed inside the useful air pipe (17). A pressure detector (18) is fixedly connected through the inner wall of the first partition wall (2).

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