Low-value compressed air recycling device

Abstract

The utility model relates to the technical field of compressed air recycling, in particular to a low-value compressed air recycling device which comprises an air compressor group, a first air pipe fixedly arranged at an air outlet of the air compressor group, a buffer tank arranged at one end of the first air pipe, a drying machine group arranged on one side of the air compressor group, and a second air pipe fixedly arranged at an air outlet of the drying machine group. The device has the advantages that gas discharged by the air compressor group is communicated with gas discharged by the drying machine group in a cold blowing mode, emission noise is reduced, the gas discharged by the air compressor group and the gas discharged by the drying machine group in the cold blowing mode are used for power generation, and the device is energy-saving and environment-friendly. And the gas discharged by the air compressor group and the gas discharged by cold blowing of the drying machine group are reused for aeration of the wastewater station, so that the electricity consumption of an aeration fan of the wastewater station is reduced, and the energy consumption of the wastewater station is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of compressed air recycling, in particular to a low-value compressed air recycling device. Background Art

[0002] Compressed air is a gas widely used in the industrial field and can be used as a power source for a variety of mechanical equipment. Low-value compressed air refers to gas with a pressure of 0.1-1MPa, which is suitable for various low-power and low-flow industrial production processes.

[0003] When the air compressor system of SAIC Volkswagen Energy Center is in operation, the air compressor unloading exhaust and the dryer cold blowing exhaust are both low-value compressed air of 0.25Mpa, with low pressure, and are directly and continuously discharged without any treatment.

[0004] However, in the implementation of relevant technologies, it was found that the existing air compressor system has the following problems: the existing air compressor unloading exhaust and the dryer cold blowing exhaust are directly discharged without any treatment, resulting in gas waste and increased costs. In view of this, a low-value compressed air recycling device is provided to overcome the above-mentioned defects. Utility Model Content

[0005] The utility model aims to solve the shortcomings in the prior art and proposes a low-value compressed air recycling device.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a low-value compressed air recycling device, comprising an air compressor group, a first air pipe is fixedly provided at the air outlet of the air compressor group, a buffer tank is provided at one end of the first air pipe, a dryer group is provided on one side of the air compressor group, a second air pipe is fixedly provided at the air outlet of the dryer group, a third air pipe is provided at the air outlet of the buffer tank, a flow meter is provided on the side of the third air pipe, a turbine generator is provided at one end of the third air pipe, a fourth air pipe is provided at the air outlet of the turbine generator, a fifth air pipe is provided on the side of the fourth air pipe, an aeration fan is provided at one end of the fifth air pipe, a wastewater tank is provided on the side of the fourth air pipe, a control cabinet is provided on the side of the turbine generator, a voltage stabilizing cabinet is provided on one side of the control cabinet, a communication cabinet is provided on one side of the voltage stabilizing cabinet, and a grid-connected cabinet is provided on one side of the communication cabinet.

[0007] As a further description of the above technical solution: a first one-way valve is provided on the side of the first air pipe, and a second one-way valve is provided on the side of the second air pipe. The first one-way valve allows the gas in the first air pipe to flow in only one direction.

[0008] As a further description of the above technical solution: a third one-way valve is provided on the side of the fourth air pipe, and a fourth one-way valve is provided on the side of the fifth air pipe. The third one-way valve allows the gas in the fourth air pipe to flow in one direction only, and the fourth one-way valve allows the gas in the fifth air pipe to flow in one direction only, thereby avoiding cross-flow of gases.

[0009] As a further description of the above technical solution: one end of the first air pipe is fixedly connected to the air inlet of the buffer tank, and one end of the second air pipe is fixedly connected to the side of the first air pipe. The first air pipe facilitates the delivery of the gas discharged from the air compressor group into the buffer tank.

[0010] As a further description of the above technical solution: the air outlet of the aeration fan is fixedly connected to one end of the fifth air pipe, and the other end of the fifth air pipe is fixedly connected to the side of the fourth air pipe, so that the aeration fan can provide an air source for the wastewater pool.

[0011] As a further description of the above technical solution: one end of the third air pipe is fixedly connected to the air inlet of the turbine generator, and the air outlet of the buffer tank is fixedly connected to the other end of the third air pipe, so that the turbine generator can generate electricity.

[0012] As a further description of the above technical solution: the air outlet of the turbine generator is fixedly connected to one end of the fourth air pipe, and the other end of the fourth air pipe is located inside the wastewater pool. The fourth air pipe facilitates the discharge of gas in the turbine generator into the wastewater pool to provide a gas source for the wastewater pool.

[0013] The utility model has the following beneficial effects:

[0014] The utility model designs a low-value compressed air recycling device. Through design coordination, the gas discharged by the air compressor group and the gas discharged by the cold blow of the dryer group are mixed in the first air pipe, and the mixed gas is discharged into the buffer tank, and the mixed gas is discharged into the turbine generator through the third air pipe. The turbine drives the generator to work, and the compressed air pressure at this time will drop to 0.05Mpa. Then the gas is transported to the wastewater station through the fourth air pipe, supplied to the wastewater pool for aeration, and becomes the air source of the wastewater pool. The aeration fan becomes a standby equipment. When the compressed air is stopped, the aeration fan is started to save electricity for the aeration fan, so that the gas discharged by the air compressor group is connected with the gas discharged by the cold blow of the dryer group, and the emission noise is reduced. The gas discharged by the air compressor group and the gas discharged by the cold blow of the dryer group are used for power generation, which plays a role in energy saving and consumption reduction. The gas discharged by the air compressor group and the gas discharged by the cold blow of the dryer group are reused for aeration of the wastewater station, which reduces the power consumption of the aeration fan of the wastewater station and reduces the energy consumption of the wastewater station. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0016] Figure 2 This is a schematic diagram of the installation structure of the buffer tank of the utility model;

[0017] Figure 3 This is a schematic diagram of the installation structure of the turbine generator of the utility model;

[0018] Figure 4 It is a schematic diagram of the internal structure of the wastewater pool of the utility model.

[0019] Legend:

[0020] 1. Air compressor group; 2. First air pipe; 3. Buffer tank; 4. Dryer group; 5. Second air pipe; 6. Third air pipe; 7. Flow meter; 8. Turbine generator; 9. Fourth air pipe; 10. Fifth air pipe; 11. Aeration fan; 12. Wastewater tank; 13. Control cabinet; 14. Voltage stabilizer cabinet; 15. Communication cabinet; 16. Grid-connected cabinet; 17. First non-return valve; 18. Second non-return valve; 19. Third non-return valve; 20. Fourth non-return valve. DETAILED DESCRIPTION

[0021] Reference Figure 1-Figure 4The utility model provides a low-value compressed air recycling device: it includes an air compressor group 1, a first air pipe 2 is fixedly provided at the air outlet of the air compressor group 1, the first air pipe 2 is convenient for sending the gas discharged from the air compressor group 1 into a buffer tank 3, a buffer tank 3 is provided at one end of the first air pipe 2, the buffer tank 3 is convenient for mixing the gas discharged from the air compressor group 1 with the gas discharged by the cold blow of the dryer group 4, a dryer group 4 is provided on one side of the air compressor group 1, a second air pipe 5 is fixedly provided at the air outlet of the dryer group 4, the second air pipe 5 is convenient for sending the gas discharged by the cold blow of the dryer group 4 into the first air pipe 2, a third air pipe 6 is provided at the air outlet of the buffer tank 3, the third air pipe 6 is convenient for sending the mixed gas into a turbine generator 8, a flow meter 7 is provided on the side of the third air pipe 6, the flow meter 7 is convenient for monitoring and controlling the gas flow, a turbine generator 8 is provided at one end of the third air pipe 6, a fourth air pipe 9 is provided at the air outlet of the turbine generator 8, and a third air pipe 9 is provided on the side of the fourth air pipe 9 Five air pipes 10, an aeration fan 11 is provided at one end of the fifth air pipe 10, and the aeration fan 11 is convenient for providing power to the wastewater pool 12. A wastewater pool 12 is provided on the side of the fourth air pipe 9, and the wastewater pool 12 is convenient for collecting and storing sewage. A control cabinet 13 is provided on the side of the turbine generator 8, and the control cabinet 13 has a built-in control system. The control system adopts Siemens S7-1200PLC to realize the speed control of the turbine generator 8, the turbine generator 8 overspeed alarm, voltage overlimit alarm, undervoltage alarm, power generation statistics, flow statistics, pipeline pressure control, and linkage of the aeration fan 11. A voltage stabilizing cabinet 14 is provided on one side of the control cabinet 13, and the voltage stabilizing cabinet 14 is convenient for maintaining the voltage stability of the equipment. A communication cabinet 15 is provided on one side of the voltage stabilizing cabinet 14, and the communication cabinet 15 is convenient for realizing the effective distribution of electricity. A grid-connected cabinet 16 is provided on one side of the communication cabinet 15, and the grid-connected cabinet 16 is used to control and balance the current, voltage and frequency to ensure the stability and safety of the power grid.

[0022] As a further implementation scheme of the above technical scheme: a first one-way valve 17 is provided on the side of the first air pipe 2, and a second one-way valve 18 is provided on the side of the second air pipe 5. The first one-way valve 17 allows the gas in the first air pipe 2 to flow in only one direction.

[0023] As a further implementation scheme of the above technical scheme: a third one-way valve 19 is provided on the side of the fourth air pipe 9, and a fourth one-way valve 20 is provided on the side of the fifth air pipe 10. The third one-way valve 19 allows the gas in the fourth air pipe 9 to flow in one direction only, and the fourth one-way valve 20 allows the gas in the fifth air pipe 10 to flow in one direction only, so as to avoid cross-flow of gases.

[0024] As a further implementation scheme of the above technical scheme: one end of the first air pipe 2 is fixedly connected to the air inlet of the buffer tank 3, and one end of the second air pipe 5 is fixedly connected to the side of the first air pipe 2, so that the first air pipe 2 is convenient for delivering the gas discharged from the air compressor group 1 into the buffer tank 3.

[0025] As a further implementation scheme of the above technical scheme: the air outlet of the aeration fan 11 is fixedly connected to one end of the fifth air pipe 10, and the other end of the fifth air pipe 10 is fixedly connected to the side of the fourth air pipe 9, so that the aeration fan 11 can provide an air source for the wastewater pool 12.

[0026] As a further implementation scheme of the above technical scheme: one end of the third air pipe 6 is fixedly connected to the air inlet of the turbine generator 8, and the air outlet of the buffer tank 3 is fixedly connected to the other end of the third air pipe 6, so that the turbine generator 8 can generate electricity.

[0027] As a further implementation scheme of the above technical scheme: the air outlet of the turbine generator 8 is fixedly connected to one end of the fourth air pipe 9, and the other end of the fourth air pipe 9 is located inside the wastewater tank 12. The fourth air pipe 9 facilitates the discharge of gas in the turbine generator 8 into the wastewater tank 12, thereby providing a gas source for the wastewater tank 12.

[0028] Working principle:

[0029] When the utility model is used, the gas discharged from the air compressor group 1 is discharged into the buffer tank 3 through the first air pipe 2, and the gas discharged by the cold blowing of the drying machine group 4 is discharged into the first air pipe 2 through the second air pipe 5, and mixed with the gas in the first air pipe 2 and discharged into the buffer tank 3. The first one-way valve 17 allows the gas discharged from the air compressor group 1 to flow in one direction, and the second one-way valve 18 allows the gas discharged by the cold blowing of the drying machine group 4 to flow in one direction to prevent cross-flow. After the two gases are mixed in the buffer tank 3, they are discharged into the turbine generator 8 through the third air pipe 6, and the turbine drives the generator to work. At this time, the compressed air pressure will drop to 0.05Mpa, and then the gas is transported to the wastewater station through the fourth air pipe 9, and supplied to the wastewater pool 12 for aeration, becoming the gas source of the wastewater pool 12, and the aeration fan 11 It becomes a backup equipment. When the compressed air is stopped, the aeration fan 11 is started to save electricity for the aeration fan 11. The control system adopts Siemens S7-1200PLC to realize the speed control of the turbine generator 8, the overspeed alarm of the turbine generator 8, the over-voltage alarm, the under-voltage alarm, the power generation statistics, the flow statistics, the pipeline pressure control, and the linkage of the aeration fan 11, so that the gas discharged by the air compressor group 1 is connected with the gas discharged by the cold blow of the dryer group 4, and the emission noise is reduced. The gas discharged by the air compressor group 1 and the gas discharged by the cold blow of the dryer group 4 are used for power generation, which plays a role in energy saving and consumption reduction. The gas discharged by the air compressor group 1 and the gas discharged by the cold blow of the dryer group 4 are reused for aeration of the wastewater station, which reduces the electricity consumption of the aeration fan 11 of the wastewater station and reduces the energy consumption of the wastewater station.

[0030] Finally, it should be noted that the above are only preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A low-value compressed air recycling device, comprising an air compressor group (1), characterized in that: A first air pipe (2) is fixedly provided at the air outlet of the air compressor group (1), a buffer tank (3) is provided at one end of the first air pipe (2), a drying machine group (4) is provided on one side of the air compressor group (1), a second air pipe (5) is fixedly provided at the air outlet of the drying machine group (4), a third air pipe (6) is provided at the air outlet of the buffer tank (3), a flow meter (7) is provided on the side of the third air pipe (6), a turbine generator (8) is provided at one end of the third air pipe (6), and a flow meter (7) is provided on the side of the turbine generator (8). A fourth air pipe (9) is provided at the air outlet, a fifth air pipe (10) is provided on the side of the fourth air pipe (9), an aeration fan (11) is provided at one end of the fifth air pipe (10), a wastewater tank (12) is provided on the side of the fourth air pipe (9), a control cabinet (13) is provided on the side of the turbine generator (8), a voltage stabilizing cabinet (14) is provided on one side of the control cabinet (13), a communication cabinet (15) is provided on one side of the voltage stabilizing cabinet (14), and a grid-connected cabinet (16) is provided on one side of the communication cabinet (15).

2. A low-value compressed air recycling device according to claim 1, characterized in that: A first one-way valve (17) is provided on the side of the first air pipe (2), and a second one-way valve (18) is provided on the side of the second air pipe (5).

3. A low-value compressed air recycling device according to claim 1, characterized in that: A third one-way valve (19) is provided on the side of the fourth air pipe (9), and a fourth one-way valve (20) is provided on the side of the fifth air pipe (10).

4. A low-value compressed air recycling device according to claim 1, characterized in that: One end of the first air pipe (2) is fixedly connected to the air inlet of the buffer tank (3), and one end of the second air pipe (5) is fixedly connected to the side of the first air pipe (2).

5. The low-value compressed air recycling device according to claim 1, characterized in that: The air outlet of the aeration fan (11) is fixedly connected to one end of the fifth air pipe (10), and the other end of the fifth air pipe (10) is fixedly connected to the side of the fourth air pipe (9).

6. The low-value compressed air recycling device according to claim 1, characterized in that: One end of the third air pipe (6) is fixedly connected to the air inlet of the turbine generator (8), and the air outlet of the buffer tank (3) is fixedly connected to the other end of the third air pipe (6).

7. The low-value compressed air recycling device according to claim 1, characterized in that: The air outlet of the turbine generator (8) is fixedly connected to one end of a fourth air pipe (9), and the other end of the fourth air pipe (9) is located inside the wastewater tank (12).

Images