Compressed air energy storage aeration system and control method for compressed air energy storage aeration

Abstract

The present application provides a compressed air energy storage aeration system and a control method for compressed air energy storage aeration. It includes: a gas dispersion device, a blower, an air compression tank, an air compressor, a detection device and a controller. One end of the air compression tank is connected to the air compressor and is used for storing compressed air. The other end of the air compression tank is connected to the gas dispersion device. Among them, the air compressor is used to compress air into the air compression tank, and the gas dispersion device is arranged in the aeration tank. The blower is connected to the gas dispersion device and is used to transport the compressed air to the gas dispersion device. At least part of the detection device is arranged in the aeration tank and is used to detect the oxygen concentration and sludge concentration in the aeration tank. The controller is respectively connected to the detection device, the blower and the air compression tank, and controls the blower to transport the compressed air in the air compression tank to the gas dispersion device according to the received oxygen concentration and sludge concentration detected by the detection device, so as to reduce the aeration cost and improve the aeration efficiency.

Description

Technical Field

[0001] This application relates to the field of energy technologies, and in particular, to a compressed air energy storage aeration system and a control method for compressed air energy storage aeration. Background Art

[0002] During the sewage treatment process in a sewage treatment plant, it is necessary to aerate the sewage through a blower and an aeration system so that microorganisms can degrade the pollutants in the water. When microorganisms degrade the pollutants in the water, the demand for oxygen also changes continuously. Therefore, in order to ensure the removal effect of pollutants in the sewage, the sewage treatment plant usually uses a high-power blower to increase the air volume to ensure sufficient oxygen supply. However, too much oxygen may cause an increase in dissolved oxygen during the denitrification stage, inhibit the nitrogen removal process, and result in high energy consumption, high cost, and poor degradation effect.

[0003] In the prior art, an intelligent aeration control system using artificial intelligence and mathematical model algorithms is usually used to monitor and calculate the sewage treatment process. By predicting the aeration volume required by the sewage treatment plant, the frequency conversion of the blower is adjusted to achieve refined control of the aeration in the sewage treatment plant. However, at present, the frequency conversion range of the variable-frequency blower is limited and cannot provide the required aeration volume. Moreover, high-frequency frequency conversion will damage the blower, thus increasing the cost.

[0004] Based on this, in the prior art, there are problems of high aeration control cost and low aeration control efficiency. Summary of the Invention

[0005] An embodiment of this application provides a compressed air energy storage aeration system and a control method for compressed air energy storage aeration, which reduce blower loss, lower aeration control cost, and improve control efficiency.

[0006] In a first aspect, this application provides a compressed air energy storage aeration system, including a gas dispersion device, a blower, an air compression tank, an air compressor, a detection device, and a controller:

[0007] The gas dispersion device is arranged in the aeration tank;

[0008] The blower is connected to the gas dispersion device and is used to transport air to the gas dispersion device;

[0009] One end of the air compression tank is connected to the air compressor, and the other end of the air compression tank is connected to the gas dispersion device. Among them, the air compressor is used to compress air into the air compression tank, and the air compression tank is used to store compressed air and transport the compressed air to the gas dispersion device;

[0010] At least part of the detection device is arranged in the aeration tank and is used to detect the oxygen concentration and sludge concentration in the aeration tank;

[0011] The controller is respectively connected to the detection device, the fan, and the air compression tank, and is used to receive the oxygen concentration and sludge concentration detected by the detection device. According to the oxygen concentration and sludge concentration, it controls the fan to transport air to the gas dispersion device and controls the air compression tank to transport compressed air to the gas dispersion device.

[0012] Optionally, the above detection device includes a first sludge concentration detection probe and a second sludge concentration detection probe;

[0013] The first sludge concentration detection probe is arranged at the underwater bottom of the aeration tank and is used to detect the sludge concentration at the bottom of the water body;

[0014] The second sludge concentration detection probe is arranged in the upper part of the water body of the aeration tank and is used to detect the sludge concentration in the upper part of the water body.

[0015] Optionally, the above detection device includes a water surface gas collection hood, a gas oxygen concentration monitoring probe, a first gas flowmeter, and a second gas flowmeter;

[0016] The water surface gas collection hood is arranged on the water surface of the aeration tank, and at least part of the gas oxygen concentration monitoring probe is arranged inside the water surface gas collection hood and is used to detect the oxygen concentration of the escaping gas;

[0017] The first gas flowmeter is arranged between the fan and the gas dispersion device and is used to detect the flow rate of the fan;

[0018] The second gas flowmeter is arranged between the air compression tank and the gas dispersion device and is used to detect the flow rate of the air compression tank.

[0019] Optionally, the above compressed air energy storage aeration system further includes a heat exchange tube;

[0020] The heat exchange tube is wound around the outer wall of the air compression tank and is used to store the heat energy generated by the air compression tank.

[0021] Optionally, the above compressed air energy storage aeration system further includes a first heat exchanger;

[0022] The first heat exchanger is connected to the heat exchange tube and is used to utilize the heat energy stored in the heat exchange tube.

[0023] Optionally, the above compressed air energy storage aeration system further includes a second heat exchanger;

[0024] The second heat exchanger is connected to the heat exchange tube and is used to utilize the cold energy stored in the heat exchange tube.

[0025] Optionally, the above compressed air energy storage aeration system further includes a plurality of control valves;

[0026] Multiple control valves are connected to a controller, and the controller controls the air transportation of the fan and / or the compressed air transportation of the air compression tank through the multiple control valves.

[0027] In a second aspect, the present application proposes a control method for compressed air energy storage aeration, which is applied to the controller of the compressed air energy storage aeration system as described above. The method includes:

[0028] Receiving the oxygen concentration and sludge concentration detected by the detection device;

[0029] According to the oxygen concentration and sludge concentration, controlling the fan to transport air to the gas dispersion device, and controlling the air compression tank to transport compressed air to the gas dispersion device.

[0030] In a possible implementation manner, the detection device includes a first sludge concentration detection probe and a second sludge concentration detection probe. The detection device further includes a water surface air collection hood, a gas oxygen concentration monitoring probe, a first gas flowmeter, and a second gas flowmeter;

[0031] According to the oxygen concentration and sludge concentration, controlling the fan to transport air to the gas dispersion device, and controlling the air compression tank to transport compressed air to the gas dispersion device, includes:

[0032] Calculating the water body mixing degree coefficient according to the bottom sludge concentration of the water body detected by the first sludge concentration detection probe and the upper sludge concentration of the water body detected by the second sludge concentration detection probe;

[0033] Calculating the actual oxygen consumption according to the oxygen concentration of the escaped gas detected by the gas oxygen concentration monitoring probe, the flow rate of the fan detected by the first gas flowmeter, and the flow rate of the air compression tank detected by the second gas flowmeter;

[0034] According to the water body mixing degree coefficient and the actual oxygen consumption, controlling the fan to transport air to the gas dispersion device, and controlling the air compression tank to transport compressed air to the gas dispersion device.

[0035] In a possible implementation manner, according to the water body mixing degree coefficient and the actual oxygen consumption, controlling the fan to transport air to the gas dispersion device, and controlling the air compression tank to transport compressed air to the gas dispersion device, includes:

[0036] If the water body mixing degree coefficient is not greater than the preset water body mixing degree coefficient threshold, increasing the air volume of the fan, and adjusting the compressed air volume of the air compression tank and / or the frequency of the fan according to the flow rate of the fan detected by the first gas flowmeter and the flow rate of the air compression tank detected by the second gas flowmeter;

[0037] If the actual oxygen consumption is not less than the preset oxygen consumption threshold, reduce the air volume of the fan, and adjust the compressed air volume of the air compression tank and / or the frequency of the fan according to the power of the fan.

[0038] An air compression energy storage aeration system and a control method for air compression energy storage aeration provided by an embodiment of the present application. The air compression energy storage aeration system includes a gas dispersion device, a fan, an air compression tank, an air compressor, a detection device, and a controller; the gas dispersion device is arranged in the aeration tank, and the gas dispersion device is connected to the fan so that the fan transports air to the gas dispersion device; the first end of the gas dispersion device is connected to the second end of the air compression tank, and the first end of the air compression tank is connected to the air compressor. Among them, the air compressor is used to compress air into the air compression tank, and the air compression tank is used to store compressed air and transport the compressed air to the gas dispersion device. Compared with the prior art, by intelligently regulating the frequency conversion of the fan, in this application, air is compressed and stored, and then the fan transports the air to the gas dispersion device and transmits it into the aeration tank, reducing the damage to the fan and lowering the aeration regulation cost. At least part of the detection device is arranged in the aeration tank and is used to detect the oxygen concentration and sludge concentration in the aeration tank; the controller is respectively connected to the detection device, the fan, and the air compression tank, and is used to receive the oxygen concentration and sludge concentration detected by the detection device, and control the fan to transport air to the gas dispersion device according to the oxygen concentration and sludge concentration, and control the air compression tank to transport compressed air to the gas dispersion device. In this application, the actual oxygen concentration and sludge concentration in the aeration tank are detected by the detection device, so that the fan can accurately transport a fixed amount of air from the air compression tank to the gas dispersion device, improving the accuracy of the gas delivery volume and effectively enhancing the aeration regulation efficiency. Description of the Drawings

[0039] The drawings here are incorporated into the specification and form a part of this specification, showing embodiments consistent with the present application, and are used together with the specification to explain the principles of the present application.

[0040] Figure 1 It is a schematic structural diagram of an air compression energy storage aeration system provided by the present application;

[0041] Figure 2 It is a schematic flow chart of a control method for air compression energy storage aeration provided by the present application Figure 1 ;

[0042] Figure 3 It is a schematic flow chart of a control method for air compression energy storage aeration provided by the present application Figure 2 ;

[0043] Figure 4 It is a schematic flow chart of a control method for air compression energy storage aeration provided by the present application Figure 3;

[0044] Figure 5 Schematic flow chart of a control method for compressed air energy storage aeration provided by this application Figure 4 ;

[0045] Figure 6 Schematic structural diagram of a control device for compressed air energy storage aeration provided by this application;

[0046] Figure 7 Schematic structural diagram of a control device for compressed air energy storage aeration provided by this application.

[0047] Through the above-mentioned drawings, specific embodiments of this application have been shown, and there will be more detailed descriptions hereinafter. These drawings and textual descriptions are not intended to limit the scope of the concept of this application in any way, but to illustrate the concept of this application to those skilled in the art by referring to specific embodiments.

[0048] Reference numerals

[0049] 101: Gas dispersion device;

[0050] 102: Fan;

[0051] 103: Air compression tank;

[0052] 104: Air compressor;

[0053] 105: Detection device;

[0054] 1051: First sludge concentration detection probe;

[0055] 1052: Second sludge concentration detection probe;

[0056] 1053: Water surface gas collection hood;

[0057] 1054: Gas oxygen concentration monitoring probe;

[0058] 1055: First gas flowmeter;

[0059] 1056: Second gas flowmeter;

[0060] 106: Controller;

[0061] 107: Control valve;

[0062] 108: Heat exchange tube;

[0063] 109: First heat exchanger;

[0064] 110: Second heat exchanger. Detailed implementation manners

[0065] Exemplary embodiments will be described in detail herein, and examples thereof are shown in the accompanying drawings. When the following description refers to the accompanying drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present application. On the contrary, they are merely examples of devices and methods consistent with some aspects of the present application as detailed in the appended claims.

[0066] It should be noted that the information (including but not limited to device information, parameter information, etc.) and data (including but not limited to data for analysis, stored data, displayed data, etc.) involved in the present application are all information and data authorized by the user or fully authorized by all parties. Moreover, the collection, use, and processing of relevant data need to comply with relevant laws, regulations, and standards, and corresponding operation entrances are provided for users to choose to authorize or reject.

[0067] Sewage treatment plants usually adopt biological treatment methods to degrade pollutants in sewage through microorganisms. During the sewage treatment process, microorganisms consume a large amount of oxygen. Therefore, sewage treatment plants can aerate the sewage through blowers and aeration systems to enable microorganisms to degrade the pollutants in the water. When microorganisms degrade the pollutants in the water, the demand for oxygen also changes continuously. To ensure that the pollutants in the sewage can be completely degraded, high-power blowers are usually used to increase the air volume, thereby ensuring sufficient oxygen supply. However, too much oxygen may cause the dissolved oxygen to increase during the denitrification stage, inhibit the nitrogen removal process, and result in high energy consumption, high cost, and poor degradation effect.

[0068] In the prior art, an intelligent aeration control system using artificial intelligence and mathematical model algorithms is usually adopted to monitor and calculate the sewage treatment process. By predicting the required aeration volume of the sewage treatment plant, the frequency conversion of the blower is adjusted to achieve refined control of the aeration in the sewage treatment plant. However, at present, the frequency conversion control range of the frequency conversion blower is limited and cannot provide the required aeration volume, and high-frequency frequency conversion will damage the blower, thereby increasing the cost.

[0069] Based on this, in the prior art, there are problems of high aeration control cost and low aeration control efficiency.

[0070] To solve the above problems, the core concept of this application is as follows: Provide a compressed air energy storage aeration system including a gas dispersion device, a blower, an air compression tank, an air compressor, a detection device, and a controller; the first end of the air compression tank is connected to the air compressor, and the air is compressed by the air compressor and stored in the air compression tank; the second end of the air compression tank is connected to the first end of the gas dispersion device to transport the compressed air to the gas dispersion device; the gas dispersion device is arranged in the aeration tank, and the gas dispersion device is connected to the blower so that the blower transports air to the gas dispersion device; thereby reducing the frequency conversion times of the blower, reducing the damage to the blower, and thus reducing the aeration regulation cost. Through the detection device at least partially arranged in the aeration tank, the oxygen concentration and sludge concentration of the aeration tank are detected in real time; the controller is respectively connected to the detection device, the blower, and the air compression tank, and transports the compressed air in the air compression tank to the gas dispersion device according to the oxygen concentration and sludge concentration detected by the detection device, thereby realizing the accurate transmission of air.

[0071] The following uses specific embodiments to detail the technical solutions of this application and how the technical solutions of this application solve the above technical problems. These several specific embodiments below can be combined with each other, and the same or similar concepts or processes may not be repeated in some embodiments. The embodiments of this application will be described below in conjunction with the accompanying drawings.

[0072] Figure 1 It is a schematic structural diagram of a compressed air energy storage aeration system provided by this application. As Figure 1 shown, the compressed air energy storage aeration system includes: a gas dispersion device 101, a blower 102, an air compression tank 103, an air compressor 104, a detection device 105, and a controller 106:

[0073] The gas dispersion device 101 is arranged in the aeration tank.

[0074] In this embodiment, the gas dispersion device 101 is arranged in the aeration tank to transport air to the aeration tank, enabling microorganisms to degrade pollutants in the water.

[0075] The blower 102 is connected to the gas dispersion device 101 and is used to transport air to the gas dispersion device 101.

[0076] In this embodiment, the blower 102 is connected to the gas dispersion device 101 to transmit air to the gas dispersion device 101, enabling air to be transmitted to the aeration tank through the gas dispersion device 101 and realizing the process of microorganisms degrading pollutants in the water.

[0077] One end of the air compression tank 103 is connected to the air compressor 104, and the other end of the air compression tank 103 is connected to the gas dispersion device 101. Among them, the air compressor 104 is used to compress air into the air compression tank 103, and the air compression tank 103 is used to store compressed air and transport the compressed air to the gas dispersion device 101.

[0078] In this embodiment, for example, the air compressor 104 can compress air during the low electricity consumption period or at night to obtain compressed air and store the compressed air in the air compression tank 103 to ensure sufficient air content and be able to provide sufficient air when a large amount of air is urgently needed.

[0079] At least part of the detection device 105 is arranged in the aeration tank and is used to detect the oxygen concentration and sludge concentration in the aeration tank.

[0080] In this embodiment, at least part of the detection device 105 is arranged in the aeration tank, and the oxygen concentration and sludge concentration in the aeration tank can be accurately detected to obtain accurate oxygen concentration and sludge concentration data in the aeration tank.

[0081] The controller 106 is respectively connected to the detection device 105, the blower 102 and the air compression tank 103, and is used to receive the oxygen concentration and sludge concentration detected by the detection device 105. According to the oxygen concentration and sludge concentration, it controls the blower 102 to transport air to the gas dispersion device 101 and controls the air compression tank 103 to transport compressed air to the gas dispersion device 101.

[0082] In this embodiment, through the controller 106, based on the oxygen concentration and sludge concentration detected by the detection device 105, precise control of the blower 102 and the air compression tank 103 is realized, so that the air content entering the aeration tank is accurate, resource consumption is reduced, and the aeration regulation efficiency is improved.

[0083] Optionally, in this embodiment, the detection device 105 includes a first sludge concentration detection probe 1051 and a second sludge concentration detection probe 1052;

[0084] The first sludge concentration detection probe 1051 is arranged at the underwater bottom of the aeration tank and is used to detect the sludge concentration at the bottom of the water body;

[0085] The second sludge concentration detection probe 1052 is arranged in the upper part of the water body of the aeration tank and is used to detect the sludge concentration in the upper part of the water body.

[0086] In this embodiment, through the first sludge concentration detection probe 1051 and the second sludge concentration detection probe 1052, the sludge concentration at the bottom of the water body and the sludge concentration in the upper part of the water body of the aeration tank are respectively detected, so as to obtain accurate sludge concentration and avoid errors that affect the calculation of the air content to be transmitted.

[0087] Optionally, in this embodiment, the detection device 105 includes a water surface air collection hood 1053, a gas oxygen concentration monitoring probe 1054, a first gas flowmeter 1055, and a second gas flowmeter 1056;

[0088] The water surface air collection hood 1053 is arranged on the water surface of the aeration tank, and at least part of the gas oxygen concentration monitoring probe 1054 is arranged inside the water surface air collection hood 1053 for detecting the oxygen concentration of the escaped gas.

[0089] In this embodiment, the water surface air is collected through the water surface air collection hood 1053, and the oxygen concentration of the escaped gas is detected through the gas oxygen concentration monitoring probe 1054, so as to obtain an accurate oxygen concentration of the escaped gas.

[0090] The first gas flowmeter 1055 is arranged between the blower 102 and the gas dispersion device 101 for detecting the flow rate of the blower 102.

[0091] In this embodiment, the flow rate of the blower 102 is detected through the first gas flowmeter 1055, so as to timely feedback the air content transmitted by the blower 102 to the detection device 105.

[0092] The second gas flowmeter 1056 is arranged between the air compression tank 103 and the gas dispersion device 101 for detecting the flow rate of the air compression tank 103.

[0093] In this embodiment, the flow rate of the air compression tank 103 is detected through the second gas flowmeter 1056, so as to timely feedback the air content transmitted by the air compression tank 103 to the detection device 105.

[0094] In this embodiment, the compressed air energy storage aeration system further includes a plurality of control valves 107;

[0095] The plurality of control valves 107 are connected to the controller 106, and the controller 106 controls the air transportation of the blower 102 and / or the compressed air transportation of the air compression tank 103 through the plurality of control valves 107.

[0096] In this embodiment, through the control valve 107, the air transportation of the blower 102 and / or the compressed air transportation of the air compression tank 103 are precisely controlled, avoiding insufficient or excessive air content in the aeration tank, and improving the accuracy of air content transmission.

[0097] In this embodiment, the compressed air energy storage aeration system further includes a heat exchange tube 108, a first heat exchanger 109, and a second heat exchanger 110;

[0098] The heat exchange tube 108 is wound around the outer wall of the compression tank for storing the thermal energy generated by the air compression tank 103.

[0099] The first heat exchanger 109 is connected to the heat exchange tube 108 and is used to utilize the thermal energy stored in the heat exchange tube 108.

[0100] In this embodiment, for example, during the low electricity consumption period or at night, when the air compressor 104 compresses the air and stores it in the air compression tank 103, thermal energy is generated. The generated thermal energy is stored in the heat exchange tube 108, and the first heat exchanger 109 is used to utilize the thermal energy stored in the heat exchange tube 108, for example, for night heating.

[0101] The second heat exchanger 110 is connected to the heat exchange tube 108 and is used to utilize the cold energy stored in the heat exchange tube 108.

[0102] In this embodiment, for example, during the high electricity consumption period or during the day, when the control valve 107 controls the flow rate output of the air compression tank 103 to the gas dispersion device 101, the total amount of compressed air in the air compression tank 103 decreases, while the overall volume of the air compression tank 103 remains unchanged. Therefore, the compressed air expands, generating cold energy, and the generated cold energy is stored in the heat exchange tube 108. The second heat exchanger 110 is used to utilize the cold energy stored in the heat exchange tube 108, for example, for cooling an air conditioning system or the fan 102.

[0103] The compressed air energy storage aeration system provided by the present application compresses air through the air compressor 104, stores it in the air compression tank 103, transports the compressed air to the gas dispersion device 101, and then transmits it to the aeration tank. Moreover, the gas dispersion device 101 is connected to the fan 102 so that the fan 102 transports air to the gas dispersion device 101, achieving dual control of air transmission, thereby reducing the frequency of frequency conversion of the fan 102, reducing the damage to the fan 102, and thus reducing the aeration regulation cost. Through the detection device 105, the oxygen concentration and sludge concentration in the aeration tank are detected in real time. The controller 106 is respectively connected to the detection device 105, the fan 102, and the air compression tank 103, and transports the compressed air in the air compression tank 103 to the gas dispersion device 101 according to the oxygen concentration and sludge concentration detected by the detection device 105, thereby improving the aeration regulation efficiency.

[0104] Figure 2 Schematic flow of a control method for compressed air energy storage aeration provided by the present application Figure 1 . This control method for compressed air energy storage aeration is applied to the controller of the compressed air energy storage aeration system as shown in Figure 1 and, as shown in Figure 2 , this method includes:

[0105] S201. Receive the oxygen concentration and sludge concentration detected by the detection device.

[0106] In this embodiment, for example, the oxygen concentration obtained by the detection device, the sludge concentration obtained by the detection device, and the sludge concentration.

[0107] S202. According to the oxygen concentration and the sludge concentration, control the fan to transport air to the gas dispersion device, and control the air compression tank to transport compressed air to the gas dispersion device.

[0108] In this embodiment, different situations of oxygen supply are obtained through the oxygen concentration and the sludge concentration. Then, the fan is used to transport air to the gas dispersion device, and the air compression tank is controlled to transport compressed air to the gas dispersion device. Corresponding to different situations, the air content in the aeration tank is increased or decreased, so as to achieve precise aeration regulation.

[0109] The control method of compressed air energy storage aeration provided by the embodiment of the present application receives the oxygen concentration and the sludge concentration detected by the detection device, controls the fan to transport air to the gas dispersion device, and controls the air compression tank to transport compressed air to the gas dispersion device, realizing precise control of the air content in the aeration tank, avoiding energy waste, and improving the accuracy of aeration regulation.

[0110] Figure 3 It is a flow schematic diagram of a control method of compressed air energy storage aeration provided by the present application Figure 2 . On the basis of the Figure 2 embodiment, as Figure 3 shown, the detection device includes a first sludge concentration detection probe and a second sludge concentration detection probe. The detection device also includes a water surface gas collecting hood, a gas oxygen concentration monitoring probe, a first gas flowmeter, and a second gas flowmeter. Then, according to the oxygen concentration and the sludge concentration in the above step S202, controlling the fan to transport air to the gas dispersion device and controlling the air compression tank to transport compressed air to the gas dispersion device includes:

[0111] S301. Calculate the water body mixing coefficient according to the sludge concentration at the bottom of the water body detected by the first sludge concentration detection probe and the sludge concentration at the upper part of the water body detected by the second sludge concentration detection probe.

[0112] In this embodiment, the calculation formula of the water body mixing coefficient is as follows:

[0113]

[0114] In the formula, S2 is the sludge concentration at the bottom of the water body, and S1 is the sludge concentration at the upper part of the water body.

[0115] S302. Calculate the actual oxygen consumption based on the oxygen concentration of the escaped gas detected by the gas oxygen concentration monitoring probe, the flow rate of the fan detected by the first gas flow meter, and the flow rate of the air compression tank detected by the second gas flow meter.

[0116] In this embodiment, the calculation formula of the actual oxygen consumption OUR is as follows:

[0117]

[0118] In the formula, Q1 is the flow rate of the fan detected by the first gas flow meter, Q2 is the flow rate of the air compression tank detected by the second gas flow meter, X0 is the oxygen concentration in the local atmosphere, and Xeff is the oxygen concentration of the escaped gas.

[0119] S303. Control the fan to transport air to the gas dispersion device and control the air compression tank to transport compressed air to the gas dispersion device according to the water body mixing coefficient and the actual oxygen consumption.

[0120] In this embodiment, for the water body mixing coefficient and the actual oxygen consumption, compare with the preset water body mixing degree and the preset oxygen consumption threshold, determine different air transportation strategies, control the fan to transport air to the gas dispersion device, and control the air compression tank to transport compressed air to the gas dispersion device to execute the air transportation strategy to achieve precise control of the air content in the aeration tank.

[0121] The control method of compressed air energy storage aeration provided by the embodiment of the present application calculates the water body mixing coefficient and the actual oxygen consumption, controls the fan to transport air to the gas dispersion device, and controls the air compression tank to transport compressed air to the gas dispersion device to execute the air transportation strategy to achieve precise control of the air content in the aeration tank, thereby improving the aeration regulation efficiency.

[0122] Figure 4 It is a flow schematic of a control method of compressed air energy storage aeration provided by the present application. Figure 3 This embodiment is based on Figure 3 the embodiment. As Figure 4 shown, the above-mentioned step S303 of controlling the fan to transport air to the gas dispersion device and controlling the air compression tank to transport compressed air to the gas dispersion device according to the water body mixing coefficient and the actual oxygen consumption includes:

[0123] S401. If the water body mixing coefficient is not greater than the preset water body mixing coefficient threshold, increase the air volume of the fan, and adjust the compressed air volume of the air compression tank and / or the frequency of the fan according to the flow rate of the fan detected by the first gas flow meter and the flow rate of the air compression tank detected by the second gas flow meter.

[0124] In this embodiment, for example, as Figure 5 shown, the preset water body mixing degree coefficient threshold can be 0.5. If the flow rate Q1 of the fan detected by the first gas flowmeter is less than the maximum adjustable flow rate Qmax of the fan, the frequency of the fan is increased; if the flow rate Q1 of the fan detected by the first gas flowmeter is not less than the maximum adjustable flow rate Qmax of the fan, the compressed air volume of the air compression tank is adjusted to increase the flow rate Q2 of the air compression tank detected by the second gas flowmeter.

[0125] S402. If the actual oxygen consumption is not less than the preset oxygen consumption threshold, the air volume of the fan is reduced, and the compressed air volume of the air compression tank and / or the frequency of the fan are adjusted according to the power of the fan.

[0126] In this embodiment, for example, as Figure 5 shown, the preset oxygen consumption threshold can be obtained by manual setting or an intelligent control model. If the actual oxygen consumption OUR is not less than the preset oxygen consumption threshold OSR, the air volume of the fan is reduced, and the compressed air volume of the air compression tank and / or the frequency of the fan are adjusted according to the power of the fan. If the power P of the fan is less than the preset maximum power Pmax of the fan, the control valve is turned down to reduce the delivery volume of the compressed air volume of the air compression tank; if the power P of the fan is not less than the preset maximum power Pmax of the fan, the control valve is closed to stop the delivery of the compressed air volume of the air compression tank and reduce the power of the fan.

[0127] The control method for compressed air energy storage aeration provided by the embodiment of the present application accurately controls the air transported by the fan and the air compression tank through specific water body mixing degree coefficients, preset water body mixing degree coefficient thresholds, actual oxygen consumption, and preset oxygen consumption thresholds.

[0128] Figure 6 It is a schematic structural diagram of a control device for compressed air energy storage aeration provided by the present application. As Figure 6 shown, a control device for compressed air energy storage aeration provided in this embodiment includes:

[0129] A receiving module 601, configured to receive the oxygen concentration and sludge concentration detected by the detection device.

[0130] A transmission module 602, configured to control the fan to transport air to the gas dispersion device and control the air compression tank to transport compressed air to the gas dispersion device according to the oxygen concentration and sludge concentration.

[0131] In a possible implementation manner, the transmission module 602 is specifically further configured to:

[0132] Calculate the water body mixing coefficient according to the sludge concentration at the bottom of the water body detected by the first sludge concentration detection probe and the sludge concentration at the upper part of the water body detected by the second sludge concentration detection probe.

[0133] Calculate the actual oxygen consumption according to the oxygen concentration of the escaped gas detected by the gas oxygen concentration monitoring probe, the flow rate of the fan detected by the first gas flowmeter, and the flow rate of the air compression tank detected by the second gas flowmeter;

[0134] Control the fan to transport air to the gas dispersion device and control the air compression tank to transport compressed air to the gas dispersion device according to the water body mixing coefficient and the actual oxygen consumption.

[0135] In a possible implementation manner, the transmission module 602 is specifically further configured to:

[0136] If the water body mixing coefficient is not greater than the preset water body mixing coefficient threshold, increase the air volume of the fan, and adjust the compressed air volume of the air compression tank and / or the frequency of the fan according to the flow rate of the fan detected by the first gas flowmeter and the flow rate of the air compression tank detected by the second gas flowmeter.

[0137] If the actual oxygen consumption is not less than the preset oxygen consumption threshold, reduce the air volume of the fan, and adjust the compressed air volume of the air compression tank and / or the frequency of the fan according to the power of the fan.

[0138] The control device for compressed air energy storage aeration provided in this embodiment can execute the method provided in the above method embodiment, and its implementation principle and technical effect are similar, which will not be elaborated here in this embodiment.

[0139] Figure 7 It is a schematic structural diagram of a control device for compressed air energy storage aeration provided by this application. As Figure 7 shown, the control device for compressed air energy storage aeration provided in this embodiment includes: at least one processor 701 and a memory 702. Optionally, the control device for compressed air energy storage aeration further includes a communication component 703. Among them, the processor 701, the memory 702, and the communication component 703 are connected through a bus 704.

[0140] In the specific implementation process, at least one processor 701 executes the computer execution instructions stored in the memory 702, so that at least one processor 701 executes the above method.

[0141] The specific implementation process of the processor 701 can refer to the above method embodiment, and its implementation principle and technical effect are similar, which will not be elaborated here in this embodiment.

[0142] In the above embodiments, it should be understood that the processor may be a central processing unit (CPU for short), or other general-purpose processors, digital signal processors (DSP for short), application specific integrated circuits (ASIC for short), etc. The general-purpose processor may be a microprocessor or any conventional processor, etc. The steps of the method disclosed in combination with the invention can be directly implemented by a hardware processor, or implemented by a combination of hardware and software modules in the processor.

[0143] The memory may include a random access memory (RAM), and may also include a non-volatile memory (NVM), such as at least one disk memory.

[0144] The bus may be an industry standard architecture (ISA) bus, a peripheral component interconnect (PCI) bus, an extended industry standard architecture (EISA) bus, etc. The bus can be divided into an address bus, a data bus, a control bus, etc. For the sake of representation, the buses in the drawings of this application are not limited to only one bus or one type of bus.

[0145] This application also provides a computer-readable storage medium. The computer-readable storage medium stores computer-executable instructions. When the processor executes the computer-executable instructions, the above method is implemented.

[0146] The above-readable storage medium can be implemented by any type of volatile or non-volatile storage device or a combination thereof, such as a static random access memory (SRAM), an electrically erasable programmable read-only memory (EEPROM), an erasable programmable read-only memory (EPROM), a programmable read-only memory (PROM), a read-only memory (ROM), a magnetic memory, a flash memory, a disk, or an optical disc. The readable storage medium can be any available medium accessible by a general-purpose or special-purpose computer.

[0147] An exemplary readable storage medium is coupled to a processor, enabling the processor to read information from and write information to the readable storage medium. Of course, the readable storage medium can also be part of the processor. The processor and the readable storage medium can be located in an Application Specific Integrated Circuits (ASIC). Of course, the processor and the readable storage medium can also exist as discrete components in a device.

[0148] The division of units is only a logical function division. In actual implementation, there may be other division methods. For example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the couplings or direct couplings or communication connections shown or discussed among each other can be indirect couplings or communication connections through some interfaces, devices or units, and can be in electrical, mechanical or other forms.

[0149] The units described as separate components may or may not be physically separated. The components shown as units may or may not be physical units, that is, they can be located in one place or distributed to multiple network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0150] In addition, in each embodiment of the present invention, the functional units can be integrated in a processing unit, or each unit can exist physically alone, or two or more units can be integrated in one unit.

[0151] If the function is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on such an understanding, the technical solution of the present invention, in essence, or the part that contributes to the prior art or part of this technical solution can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions for causing a computer device (which can be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the methods in each embodiment of the present invention. The foregoing storage medium includes: various media such as USB flash drives, mobile hard disks, read-only memories (ROMs), random access memories (RAMs), magnetic disks or optical discs that can store program codes.

[0152] Those of ordinary skill in the art can understand that all or part of the steps of implementing the above method embodiments can be completed by hardware related to program instructions. The foregoing program can be stored in a computer-readable storage medium. When the program is executed, it performs the steps of the above method embodiments; and the foregoing storage medium includes: various media such as ROM, RAM, magnetic disk, or optical disk that can store program codes.

[0153] Finally, it should be noted that those skilled in the art will readily conceive of other embodiments of the present invention after considering the specification and practicing the invention disclosed herein. The present invention is intended to cover any variations, uses, or adaptations of the present invention, which follow the general principles of the present invention and include known common knowledge or conventional technical means in the technical field not disclosed by the present invention. It is not limited to the exact structures described above and shown in the drawings, and various modifications and changes can be made without departing from its scope. The scope of the present invention is only limited by the appended claims.

Claims

1. A compressed air energy storage aeration system, characterized in that, It includes a gas dispersion device, a blower, an air compression tank, an air compressor, a detection device and a controller. The detection device includes a first sludge concentration detection probe, a second sludge concentration detection probe, a water surface gas collection hood, a gas oxygen concentration monitoring probe, a control valve, a first gas flowmeter and a second gas flowmeter: The gas dispersion device is arranged in the aeration tank; The blower is connected to the gas dispersion device for transporting air to the gas dispersion device; One end of the air compression tank is connected to the air compressor, and the other end of the air compression tank is connected to the gas dispersion device. Wherein, the air compressor is used for compressing air into the air compression tank, and the air compression tank is used for storing compressed air and transporting the compressed air to the gas dispersion device; At least part of the detection device is arranged in the aeration tank for detecting the oxygen concentration and sludge concentration in the aeration tank; the first sludge concentration detection probe is arranged at the underwater bottom of the aeration tank for detecting the sludge concentration at the bottom of the water body; the second sludge concentration detection probe is arranged at the upper part of the water body in the aeration tank for detecting the sludge concentration at the upper part of the water body; the water surface gas collection hood is arranged on the water surface of the aeration tank, and at least part of the gas oxygen concentration monitoring probe is arranged in the water surface gas collection hood for detecting the oxygen concentration of the escaping gas; the first gas flowmeter is arranged between the blower and the gas dispersion device for detecting the flow rate of the blower; the second gas flowmeter is arranged between the air compression tank and the gas dispersion device for detecting the flow rate of the air compression tank; The controller is respectively connected to the detection device, the blower and the air compression tank, and is used for receiving the oxygen concentration of the escaping gas, the flow rate of the blower, the flow rate of the air compression tank, the sludge concentration at the bottom of the water body and the sludge concentration at the upper part of the water body detected by the detection device, determining the water body mixing degree coefficient according to the sludge concentration at the bottom of the water body and the sludge concentration at the upper part of the water body; calculating the actual oxygen consumption according to the oxygen concentration of the escaping gas, the flow rate of the blower and the flow rate of the air compression tank; if the water body mixing degree coefficient is not greater than the preset water body mixing degree coefficient threshold, increasing the air volume of the blower, and when the flow rate of the blower detected by the first gas flowmeter is less than the maximum adjustable flow rate of the blower, increasing the frequency of the blower; and when the flow rate of the blower is not less than the maximum adjustable flow rate, adjusting the compressed air volume of the air compression tank to increase the flow rate of the air compression tank detected by the second gas flowmeter; If the actual oxygen consumption is not less than the preset oxygen consumption threshold, reducing the air volume of the blower, and when the power of the blower is less than the preset maximum power of the blower, reducing the delivery volume of the compressed air of the air compression tank by lowering the control valve; and when the power of the blower is greater than the preset maximum power of the blower, closing the control valve to stop the delivery of the compressed air volume of the air compression tank and reducing the power of the blower.

2. The compressed air energy storage aeration system according to claim 1, wherein It further includes a heat exchange tube; The heat exchange tube is wound around the outer wall of the air compression tank for storing the heat energy generated by the air compression tank.

3. The compressed air energy storage aeration system according to claim 2, wherein It further includes a first heat exchanger; The first heat exchanger is connected to the heat exchange tubes and is used for utilizing the thermal energy stored in the heat exchange tubes.

4. The compressed air energy storage aeration system according to claim 3, characterized in that, It further includes a second heat exchanger; The second heat exchanger is connected to the heat exchange tubes and is used for utilizing the cold energy stored in the heat exchange tubes.

5. The compressed air energy storage aeration system according to claim 1, wherein There are multiple control valves; The multiple control valves are connected to the controller, and the controller controls the air transportation of the blower and / or the compressed air transportation of the air compression tank through the multiple control valves.

6. A control method for compressed air energy storage aeration, characterized in that, For a controller applied to the compressed air energy storage aeration system according to any one of claims 1 to 5, the method includes: Receiving the oxygen concentration and sludge concentration detected by the detection device; According to the oxygen concentration and the sludge concentration, controlling the blower to transport air to the gas dispersion device and controlling the air compression tank to transport the compressed air to the gas dispersion device.

7. The method according to claim 6, wherein The detection device includes a first sludge concentration detection probe and a second sludge concentration detection probe. The detection device further includes a water surface gas collection hood, a gas oxygen concentration monitoring probe, a first gas flowmeter, and a second gas flowmeter; The step of, according to the oxygen concentration and the sludge concentration, controlling the blower to transport air to the gas dispersion device and controlling the air compression tank to transport the compressed air to the gas dispersion device includes: Calculating the water body mixing degree coefficient according to the sludge concentration at the bottom of the water body detected by the first sludge concentration detection probe and the sludge concentration at the upper part of the water body detected by the second sludge concentration detection probe; Calculating the actual oxygen consumption according to the oxygen concentration of the escaped gas detected by the gas oxygen concentration monitoring probe, the flow rate of the blower detected by the first gas flowmeter, and the flow rate of the air compression tank detected by the second gas flowmeter; According to the water body mixing degree coefficient and the actual oxygen consumption, controlling the blower to transport air to the gas dispersion device and controlling the air compression tank to transport the compressed air to the gas dispersion device.

8. The method according to claim 7, wherein The step of, according to the water body mixing degree coefficient and the actual oxygen consumption, controlling the blower to transport air to the gas dispersion device and controlling the air compression tank to transport the compressed air to the gas dispersion device includes: If the water body mixing degree coefficient is not greater than the preset water body mixing degree coefficient threshold, increasing the air volume of the blower and adjusting the compressed air volume of the air compression tank and / or the frequency of the blower according to the flow rate of the blower detected by the first gas flowmeter and the flow rate of the air compression tank detected by the second gas flowmeter; If the actual oxygen consumption is not less than the preset oxygen consumption threshold, reducing the air volume of the blower and adjusting the compressed air volume of the air compression tank and / or the frequency of the blower according to the power of the blower.

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