Air compressor unloading energy recovery device and recovery method

Abstract

The present invention relates to an air compressor unloading energy recovery device and a recovery method, comprising multiple air compressor systems, recovery pipelines, multiple check valves, generators, batteries and diodes, multiple check valves are connected to the exhaust ports of multiple air compressor systems in a one-to-one correspondence, the generators are respectively connected to the multiple check valves through the recovery pipelines, the batteries are connected to the generators through a controller, the batteries are connected to a mains power supply and a lighting control box through a line, and diodes are provided on the lines between the batteries and the lighting control box and between the mains power supply and the lighting control box. Through this mechanism, the problem of frequent unloading of air compressors, direct discharge of high-pressure air into the environment, serious energy waste, and reduced net power index of air compressors is solved.

Description

Technical Field

[0001] The invention relates to the technical field of air compressor unloading energy recovery and utilization, and in particular to an air compressor unloading energy recovery device and a recovery method. Background Art

[0002] Large industrial and mining enterprises are equipped with air compressor stations, equipped with more than a dozen or even more air compressors to provide compressed air energy. When the air compressor is operating normally or in low demand operation, the air compressor is unloaded after the working pressure reaches the set unloading pressure. After the oil tank pressure drops to 2 bar, the air compressor enters a dormant state and the motor stops. When the working pressure drops to the set loading pressure, the motor restarts, the machine starts to generate compressed air, and reloads. Frequent unloading of the air compressor directly discharges high-pressure air into the environment, resulting in serious energy waste and reducing the net power index of the air compressor. Summary of the invention

[0003] The present invention provides an air compressor unloading energy recovery device and a recovery method, which solves the problem that the air compressor is frequently unloaded and high-pressure air is directly discharged into the environment, resulting in serious energy waste and reducing the net power index of the air compressor.

[0004] The technical solution of the present invention to solve the above technical problems is as follows:

[0005] An air compressor unloading energy recovery device includes multiple air compression systems, recovery pipelines, multiple check valves, generators, batteries and diodes. The multiple check valves are connected to the exhaust ports of the multiple air compression systems in a one-to-one correspondence. The generators are connected to the multiple check valves through the recovery pipelines. The batteries are connected to the generators through a controller. The batteries are connected to a mains power supply and a lighting control box through lines. Diodes are provided on the lines between the batteries and the lighting control box and on the lines between the mains power supply and the lighting control box.

[0006] The beneficial effect of adopting the above further scheme is that the energy in the unloading process of multiple air compressor systems is collected by using the recovery pipeline, and the generator is connected to generate electricity. Then, the battery is used for energy storage. A check valve is set at the exhaust port of the air compressor system to prevent the pressure relief air from impacting the discharge pipeline, ensuring that the pressure relief air always flows to the generator. A diode is set at the battery outlet and the mains power supply circuit to ensure that the current always flows to the lighting control box. The device controls the output of the electric energy output by the generator through the controller. The controller detects whether the lighting control box and the generator are working, and receives the information fed back by the lighting control box and the generator. Then, the controller allocates the route of the electric energy output by the generator. The device uses the air energy discharged during the unloading process of the recycled air compressor for power generation, uses the battery for energy storage, provides indoor lighting when the indoor illumination is low, realizes self-sufficiency of lighting in the air compressor station, achieves the purpose of energy saving and emission reduction, and improves energy utilization efficiency.

[0007] Furthermore, multiple groups of batteries are provided, and the multiple groups of batteries are connected to the generator. The discharge ends of the multiple groups of batteries are provided with inverters, and the charging ends of the multiple groups of batteries are provided with rectifiers. The inverter is arranged between the battery and the lighting control box, and the rectifier is arranged between the battery and the controller.

[0008] The beneficial effect of adopting the above further solution is that it can supply power to a variety of electrical equipment according to the actual situation on site. The rectifier converts the AC power output by the generator into DC power, which is stored in the battery. Then, the battery converts the DC power into AC power for use by the AC lighting load through the inverter.

[0009] Furthermore, the air compressors in the multi-group air compression system are screw air compressors.

[0010] The beneficial effect of adopting the above further solution is that the heat generated by the screw air compressor during operation can be recycled and used in industrial or civil fields.

[0011] Furthermore, screw air compressors are divided into process air compressors and instrument air compressors.

[0012] The beneficial effect of adopting the above further solution is that it is easy to collect energy from different types of air compressors and improve the applicability of the device.

[0013] Furthermore, a discharge pipeline is provided at the exhaust port.

[0014] The beneficial effect of adopting the above further solution is that the exhaust port is connected to the recovery pipeline through the discharge pipeline, so that the energy unloaded in the air compression system enters the recovery pipeline through the exhaust port to provide energy for the generator to generate electricity.

[0015] Furthermore, a check valve is provided on the discharge pipeline, and the discharge pipeline is connected to the recovery pipeline.

[0016] The beneficial effect of adopting the above further solution is that a check valve is provided on the discharge pipeline to prevent the depressurized air from impacting the discharge pipeline, thereby ensuring that the depressurized air always flows to the generator.

[0017] Furthermore, the generator is an AC generator.

[0018] The beneficial effect of adopting the above further scheme is that the energy unloaded in the air compressor system is converted into AC power by the AC generator, and then the AC power is converted into DC power by the rectifier, and the DC power is stored by the battery.

[0019] Furthermore, a controller is provided between the generator and the lighting control box. The generator and the controller are connected via a feedback line, and the lighting control box and the controller are connected via a feedback line.

[0020] The beneficial effect of adopting the above further solution is that a controller is arranged between the generator and the lighting control box. The controller detects whether the lighting control box and the generator are working, receives information fed back by the lighting control box and the generator, and then allocates the route of the power output.

[0021] On the other hand, an air compressor unloading energy recovery method is based on an air compressor unloading energy recovery device, and the recovery method is:

[0022] S1: Collect the energy during the unloading process of multiple air compressor systems through the recovery pipeline;

[0023] S2: providing the energy collected by the recovery pipeline to the generator, so that the generator uses the energy to rotate and generate electricity, and outputs electrical energy;

[0024] S3: storing the electric energy output by the generator through the battery;

[0025] S4: The alternating current is converted into direct current through a rectifier, and the battery stores the converted direct current energy. Then, the battery uses an inverter to convert the direct current into alternating current and supplies power to the lighting control box.

[0026] S5: When the battery power is low, the lighting control box is powered by AC power instead.

[0027] The beneficial effect of adopting the above further scheme is that the energy in the unloading process of multiple air compressor systems is collected by using a recovery pipeline, and connected to the generator for power generation. Then, the battery is used for energy storage. A check valve is set at the exhaust port of the air compressor system to prevent the depressurized air from impacting the exhaust pipeline, ensuring that the depressurized air always flows to the generator. Diodes are set at the battery outlet and on the mains power supply circuit to ensure that the current always flows to the lighting control box. The rectifier converts the AC power output by the generator into DC power and stores energy through the battery. Then, the battery converts the DC power into AC power through the inverter and supplies power to the lighting control box. This device uses the air energy discharged during the unloading process of the recycled air compressor for power generation, uses the battery for energy storage, provides indoor lighting when the indoor illumination is low, realizes self-sufficiency of lighting in the air compressor station, achieves the purpose of energy conservation and emission reduction, and improves energy utilization efficiency.

[0028] Furthermore, an air compressor unloading energy recovery method includes, before step S1, the following steps: S11: installing an upper check valve at each exhaust port of multiple air compressor systems;

[0029] S12: connecting multiple exhaust ports in parallel through a recovery pipeline, and then connecting them to a generator;

[0030] S13: Connect the battery to the generator;

[0031] The process after step S2 includes: S21: supplying power to the lighting control box via the generator.

[0032] The beneficial effect of adopting the above further solution is that multiple exhaust ports are connected in parallel through the recovery pipeline, and a check valve is provided on each exhaust pipeline to prevent the decompression air from impacting the exhaust pipeline, ensuring that the decompression air always flows to the generator. The energy unloaded in the air compression system enters the recovery pipeline through the exhaust port to provide energy for the generator to generate electricity. The electrical energy output by the generator is stored in the battery. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 It is a structural schematic diagram of an air compressor unloading energy recovery device and a recovery method of the present invention;

[0034] Figure 2 for Figure 1 A magnified view of the structure of the middle A part;

[0035] Figure 3 The present invention is a flow chart of an air compressor unloading energy recovery device and a recovery method.

[0036] In the attached drawings, the components represented by each reference numeral are listed as follows: 1. air compressor system; 11. exhaust port; 12. discharge pipe; 2. recovery pipe; 3. check valve; 4. generator; 5. battery; 51. inverter; 52. rectifier; 6. diode; 7. AC power supply; 8. lighting control box; 9. controller; 91. feedback line. DETAILED DESCRIPTION

[0037] The principles and features of the present invention are described below in conjunction with the accompanying drawings. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.

[0038] Example 1

[0039] like Figure 1-2 As shown, an air compressor unloading energy recovery device includes multiple air compression systems 1, recovery pipelines 2, multiple check valves 3, generators 4, batteries 5 and diodes 6. The multiple check valves 3 are connected to the exhaust ports 11 of the multiple air compression systems 1 in a one-to-one correspondence. The generators 4 are respectively connected to the multiple check valves 3 through the recovery pipelines 2. The batteries 5 are connected to the generators 4 through a controller 9. The batteries 5 are connected to a mains power supply 7 and a lighting control box 8 through lines. Diodes 6 are provided on the lines between the batteries 5 and the lighting control box 8 and on the lines between the mains power supply 7 and the lighting control box 8.

[0040] Specifically, the energy during the unloading process in the multiple air compressor systems 1 is collected by using the recovery pipeline 2, and connected to the generator 4 for power generation. Then, the battery 5 is used for energy storage. A check valve 3 is then provided at the exhaust port 11 of the air compressor system 1 to prevent the decompressed air from impacting the exhaust pipeline 12, thereby ensuring that the decompressed air always flows to the generator 4. A diode 6 is provided at the outlet of the battery 5 and on the loop of the AC power supply 7 to prevent the current from flowing back into the battery 5. The device controls the output of the electric energy output by the generator 4 through the controller 9. The controller 9 detects whether the lighting control box 8 and the generator 4 are working, and receives the information fed back from the lighting control box 8 and the generator 4. Then, the controller 9 allocates the route for the output of the electric energy output by the generator 4.

[0041] like Figure 1-2 As shown, multiple groups of batteries 5 are provided, and the multiple groups of batteries 5 are all connected to the generator 4. The discharge ends of the multiple groups of batteries 5 are all provided with inverters 51, and the charging ends of the multiple groups of batteries 5 are all provided with rectifiers 52. The inverter 51 is arranged between the battery 5 and the lighting control box 8, and the rectifier 52 is arranged between the battery 5 and the controller 9.

[0042] Specifically, the battery 5 can be added according to the actual situation on site to power various electrical equipment. The rectifier 52 converts the AC power output by the generator 4 into DC power, and stores energy through the battery 5. Then, the battery 5 converts the DC power into AC power for use by the AC lighting load through the inverter 51.

[0043] like Figure 1-2 As shown, the air compressor in the multi-group air compression system 1 is a screw air compressor.

[0044] Specifically, the heat generated by the screw air compressor during operation can be recycled and used in industrial or civilian fields.

[0045] like Figure 1-2 As shown, screw air compressors are divided into process air compressors and instrument air compressors.

[0046] Specifically, it is convenient to collect the energy of different types of air compressors and improve the applicability of the device. In this embodiment, nine screw air compressor units are set, six of which are used for process and three of which are used for instrument.

[0047] In this embodiment, a unified compressed air system is set up for the whole plant to supply gas to each gas point. According to the calculation and gas requirements of various professions, an air compressor room is set up, which is 36m long and 18m wide. Nine screw air compressors are installed, including six process air compressors. The design working condition is five running and one standby. The flow rate of a single air compressor is 62.1Nm 3 / min, the pressure is 0.8MPa. There are three air compressors for instruments, the design working condition is two in operation and one in standby, the flow rate of a single air compressor is 43.1Nm 3 / min, the pressure is 0.8MPa. When the pressure reaches 0.8MPa, unloading begins, and when the pressure reaches 0.45MPa, loading and charging begins.

[0048] like Figure 1-2 As shown, a discharge pipeline 12 is provided at the exhaust port 11 .

[0049] Specifically, one end of the discharge pipeline 12 is connected to the exhaust port 11, and the other end of the discharge pipeline 12 is connected to the recovery pipeline 2. The energy unloaded in the air compression system 1 enters the recovery pipeline 2 through the exhaust port 11 to provide energy for the generator 4 to generate electricity.

[0050] like Figure 1-2 As shown, a check valve 3 is provided on the discharge pipeline 12 , and the discharge pipeline 12 is connected to the recovery pipeline 2 .

[0051] Specifically, a check valve 3 is provided on the discharge pipeline 12. When the check valve 3 is opened, the energy unloaded in the air compression system 1 enters the recovery pipeline 2 through the exhaust port 11, preventing the decompression air from impacting the discharge pipeline 12 and ensuring that the decompression air always flows to the generator 4.

[0052] like Figure 1-2 As shown, the generator 4 is an AC generator 4 .

[0053] Specifically, the energy unloaded in the air compression system 1 is converted into DC power by the AC generator 4, and the DC power is stored by the battery 5. In this embodiment, the AC generator 4 is a pneumatic generator 4, which is convenient for driving the generator 4 to rotate by high-pressure air, so as to convert the energy of the high-pressure air into electrical energy.

[0054] like Figure 1-2 As shown, a controller 9 is provided between the generator 4 and the lighting control box 8 , the generator 4 and the controller 9 are connected via a feedback line 91 , and the lighting control box 8 and the controller 9 are connected via a feedback line 91 .

[0055] Specifically, a controller 9 is provided between the generator 4 and the lighting control box 8. The controller 9 detects whether the lighting control box 8 and the generator 4 are working, and receives information fed back from the lighting control box 8 and the generator 4, and then the controller 9 allocates the route of the electric energy output.

[0056] In this embodiment, when the generator 4 and the lighting control box 8 work simultaneously, the generator 4 transmits electric energy to the lighting control box 8, and the lighting control box 8 provides power for indoor lighting.

[0057] When the generator 4 is working and the lighting control box 8 is not working, the generator 4 transmits the electric energy to the battery 5 for energy storage.

[0058] When the generator 4 is not working and the lighting control box 8 is working, the storage battery 5 transmits electric energy to the lighting control box 8, and the lighting control box 8 provides power for indoor lighting.

[0059] The beneficial effect of this embodiment is: the energy in the unloading process of the multiple air compressor systems 1 is collected by the recovery pipeline 2, and the high-pressure air unloaded by the multiple air compressor systems 1 drives the generator 4 to rotate, thereby converting the energy of the high-pressure air into electrical energy. Then, the converted electrical energy is stored by the storage battery 5. Then, a check valve 3 is set at the exhaust port 11 of the air compressor system 1 to prevent the decompression air from impacting the discharge pipeline 12, so as to ensure that the decompression air always flows to the generator 4. A diode 6 is set at the outlet of the storage battery 5 and on the loop of the mains power supply 7 to ensure that the current always flows to the lighting control box 8. This device controls the output of the electrical energy output by the generator 4 through the controller 9. The controller 9 detects whether the lighting control box 8 and the generator 4 are working, and receives the information fed back by the lighting control box 8 and the generator 4. Then, the controller 9 allocates the route of the electrical energy output by the generator 4. The device utilizes the air energy discharged during the unloading process of the recovered air compressor to generate electricity, utilizes the storage battery 5 to store energy, provides indoor lighting when the indoor illumination is low, realizes self-sufficiency of lighting in the air compressor station, achieves the purpose of energy saving and emission reduction, and improves energy utilization efficiency.

[0060] The working process of this embodiment is as follows: the process air compressor, the flow rate of a single air compressor is 62.1Nm 3 / min, pressure is 0.8MPa. Instrument air compressor, flow rate of a single air compressor is 43.1Nm 3 / min, the pressure is 0.8MPa. Unloading starts when the pressure reaches 0.8MPa, and loading and charging starts when the pressure reaches 0.45MPa. The energy generated by unloading multiple process air compressors and multiple instrument air compressors is discharged into the recovery pipeline 2 through the exhaust port 11. Then, the recovery pipeline 2 is used to collect the energy during the unloading process in the multiple air compression systems 1. The high-pressure air unloaded by the multiple air compression systems 1 drives the generator 4 to rotate, thereby converting the energy of the high-pressure air into electrical energy.

[0061] When the generator 4 and the lighting control box 8 work simultaneously, the generator 4 transmits electric energy to the lighting control box 8, and the lighting control box 8 provides power for indoor lighting.

[0062] When the generator 4 is working and the lighting control box 8 is not working, the generator 4 transmits the electric energy to the battery 5 for energy storage.

[0063] When the generator 4 is not working and the lighting control box 8 is working, the storage battery 5 transmits electric energy to the lighting control box 8, and the lighting control box 8 provides power for indoor lighting.

[0064] Example 2

[0065] like Figure 1-3 As shown, a method for recovering air compressor unloading energy is based on Example 1, and the recovery method is:

[0066] S1: Collecting energy during unloading of multiple air compressor systems 1 through recovery pipeline 2;

[0067] S2: providing the energy collected by the recovery pipeline 2 to the generator 4, so that the generator 4 uses the energy to rotate and generate electricity, and outputs electrical energy;

[0068] S3: storing the electric energy output by the generator 4 through the battery 5;

[0069] S4: The rectifier 52 converts the AC power into DC power, and the battery 5 stores the converted DC power. Then, the battery 5 uses the inverter 51 to convert the DC power into AC power and supplies it to the lighting control box 8;

[0070] S5: When the battery 5 is low on electricity, the lighting control box 8 is supplied with electricity from the mains power supply 7 .

[0071] The beneficial effects of this embodiment are: the device utilizes the air energy discharged during the unloading process of the recovered air compressor to generate electricity, utilizes the battery 5 to store energy, provides indoor lighting when the indoor illumination is low, realizes self-sufficiency in lighting in the air compressor station, achieves the purpose of energy conservation and emission reduction, and improves energy utilization efficiency.

[0072] The working process of this embodiment is: the energy in the unloading process of the multiple air compressor systems 1 is collected by using the recovery pipeline 2, and the high-pressure air unloaded by the multiple air compressor systems 1 drives the generator 4 to rotate, thereby converting the energy of the high-pressure air into electrical energy. Then, the battery 5 is used to store energy. A check valve 3 is then set at the exhaust port 11 of the air compressor system 1 to prevent the decompressed air from impacting the discharge pipeline 12, so as to ensure that the decompressed air always flows to the generator 4. A diode 6 is set at the outlet of the battery 5 and on the loop of the mains power supply 7 to ensure that the current always flows to the lighting control box 8. The rectifier 52 converts the AC power output by the generator 4 into DC power and stores energy through the battery 5. Then, the battery 5 converts the DC power into AC power through the inverter 51 for use by the AC lighting load.

[0073] In this embodiment, the process air compressor has a flow rate of 62.1Nm 3 / min, pressure is 0.8MPa. Instrument air compressor, flow rate of a single air compressor is 43.1Nm 3 / min, the pressure is 0.8MPa. Unloading starts when the pressure reaches 0.8MPa, and loading and charging starts when the pressure reaches 0.45MPa. The energy generated by unloading multiple process air compressors and multiple instrument air compressors is discharged into the recovery pipeline 2 through the exhaust port 11. The recovery pipeline 2 is used to collect the energy during the unloading process in the multiple air compression systems 1. The high-pressure air unloaded by the multiple air compression systems 1 drives the generator 4 to rotate, thereby converting the energy of the high-pressure air into electrical energy. The generator 4 transfers the electrical energy to the battery 5 to provide indoor lighting when the indoor illumination is low. When the battery 5 is low on power, the AC power supply 7 is used to supply power to the user.

[0074] When the generator 4 is working and the lighting control box 8 is not working, the generator 4 transmits the electric energy to the battery 5 for energy storage.

[0075] When the generator 4 is not working and the lighting control box 8 is working, the storage battery 5 transmits electric energy to the lighting control box 8, and the lighting control box 8 provides power for indoor lighting.

[0076] Example 3

[0077] like Figure 1-3 As shown, an air compressor unloading energy recovery method is based on Example 2, and before step S1, it includes: S11: setting an upper check valve 3 at each exhaust port 11 of multiple air compressor systems 1;

[0078] S12: connecting the plurality of exhaust ports 11 in parallel through the recovery pipeline 2, and then connecting the plurality of exhaust ports 11 to the generator 4;

[0079] S13: connecting the battery 5 to the generator 4;

[0080] The process after step S2 includes: S21: supplying power to the lighting control box 8 via the generator 4.

[0081] The working process of this embodiment is as follows: the energy in the unloading process of the multiple air compressor systems 1 is collected by the recovery pipeline 2, and the high-pressure air unloaded by the multiple air compressor systems 1 drives the generator 4 to rotate, thereby converting the energy of the high-pressure air into electrical energy. The rectifier 52 converts the AC power output by the generator 4 into DC power, and stores the energy through the battery 5. Then, the battery 5 converts the DC power into AC power for the AC lighting load through the inverter 51. Then, a check valve 3 is set at the exhaust port 11 of the air compressor system 1 to prevent the decompression air from impacting the exhaust pipeline 12, so as to ensure that the decompression air always flows to the generator 4.

[0082] The generator 4 transfers the electric energy to the storage battery 5 to provide indoor lighting when the indoor illumination is low. When the storage battery 5 is insufficient, the mains power supply 7 supplies power to the user instead.

[0083] When the generator 4 and the lighting control box 8 work simultaneously, the generator 4 transmits electric energy to the lighting control box 8, and the lighting control box 8 provides power for indoor lighting.

[0084] When the generator 4 is working and the lighting control box 8 is not working, the generator 4 transmits the electric energy to the battery 5 for energy storage.

[0085] When the generator 4 is not working and the lighting control box 8 is working, the storage battery 5 transmits electric energy to the lighting control box 8, and the lighting control box 8 provides power for indoor lighting.

[0086] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0087] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0088] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0089] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0090] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, mechanisms, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, mechanisms, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, unless they are contradictory.

[0091] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present invention.

Claims

1. An air compressor unloading energy recovery device, characterized in that: The invention comprises a plurality of air compressor systems (1), a recovery pipeline (2), a plurality of check valves (3), a generator (4), a storage battery (5) and a diode (6); the plurality of check valves (3) are connected to the exhaust ports (11) of the plurality of air compressor systems (1) in a one-to-one correspondence; the generator (4) is connected to the plurality of check valves (3) through the recovery pipeline (2); the storage battery (5) and the generator (4) are connected through a controller (9); the storage battery (5) is connected to a mains power supply (7) and a lighting control box (8) through a line; the diode (6) is provided on the line between the storage battery (5) and the lighting control box (8) and the line between the mains power supply (7) and the lighting control box (8).

2. The air compressor unloading energy recovery device according to claim 1, characterized in that: The storage battery (5) is provided in multiple groups, and the multiple groups of storage batteries (5) are all connected to the generator (4). The discharge ends of the multiple groups of storage batteries (5) are all provided with inverters (51), and the charging ends of the multiple groups of storage batteries (5) are all provided with rectifiers (52). The inverter (51) is arranged between the storage battery (5) and the lighting control box (8), and the rectifier (52) is arranged between the storage battery (5) and the controller (9).

3. The air compressor unloading energy recovery device according to claim 1, characterized in that: The air compressors in the multiple groups of the air compression system (1) are screw air compressors.

4. The air compressor unloading energy recovery device according to claim 3 is characterized in that: The screw air compressor is divided into process air compressor and instrument air compressor.

5. The air compressor unloading energy recovery device according to claim 1, characterized in that: A discharge pipeline (12) is provided at the exhaust port (11).

6. The air compressor unloading energy recovery device according to claim 5, characterized in that: The check valve (3) is provided on the discharge pipeline (12), and the discharge pipeline (12) is connected to the recovery pipeline (2).

7. The air compressor unloading energy recovery device according to claim 1, characterized in that: The generator (4) is an alternating current generator.

8. The air compressor unloading energy recovery device according to claim 1, characterized in that: The controller (9) is arranged between the generator (4) and the lighting control box (8); the generator (4) and the controller (9) are connected via a feedback line (91); and the lighting control box (8) and the controller (9) are connected via a feedback line (91).

9. An air compressor unloading energy recovery method, characterized in that: Based on the air compressor unloading energy recovery device described in claims 1-8, the recovery method is: S1: collecting energy during unloading of multiple air compressor systems (1) through a recovery pipeline (2); S2: providing the energy collected by the recovery pipeline (2) to the generator (4), so that the generator (4) uses the energy to rotate and generate electricity, thereby outputting electrical energy; S3: storing the electric energy output by the generator (4) through the storage battery (5); S4: The alternating current is converted into direct current through the rectifier (52), and the battery (5) stores the converted direct current energy. Then, the battery (5) uses the inverter to convert the direct current into alternating current, and then supplies power to the lighting control box (8); S5: When the battery (5) is low on electricity, the lighting control box (8) is supplied with electricity from the mains power supply (7).

10. The air compressor unloading energy recovery method according to claim 9, characterized in that: The method before step S1 includes: S11: installing an upper check valve (3) at each exhaust port (11) of the plurality of air compression systems (1); S12: connecting the plurality of exhaust ports (11) in parallel through the recovery pipeline (2), and then connecting the plurality of exhaust ports (11) to the generator (4); S13: connecting the battery (5) to the generator (4); The process after step S2 includes: S21: supplying power to the lighting control box (8) via the generator (4).

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