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

Abstract

The invention provides a compressed air energy storage aeration system and a compressed air energy storage aeration control method. Comprising a gas dispersing device, a fan, an air compression tank, an air compressor, a detection device and a controller, one end of the air compression tank is connected with the air compressor and used for storing compressed air, the other end of the air compression tank is connected with the gas dispersing device, and the air compressor is used for compressing air into the air compression tank; the gas dispersing device is arranged in the aeration tank; the fan is connected with the gas dispersing device and is used for transporting compressed air to the gas dispersing device; the detection device is at least partially arranged in the aeration tank and is used for detecting the oxygen concentration and the sludge concentration of the aeration tank; the controller is respectively connected with the detection device, the fan and the air compression tank, and is used for controlling the fan 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. The aeration cost is reduced, and the aeration efficiency is improved.

Description

Technical Field

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

[0002] During the sewage treatment process, sewage treatment plants need to aerate sewage through fans and aeration systems to allow microorganisms to degrade pollutants in the water. When microorganisms degrade pollutants in the water, the demand for oxygen is constantly changing. Therefore, in order to ensure the removal effect of pollutants in sewage, sewage treatment plants usually use high-power fans to increase the air volume to ensure sufficient oxygen supply. However, too much oxygen may cause the dissolved oxygen to increase in the denitrification stage, inhibiting the nitrogen removal process, resulting in high energy consumption, high costs and poor degradation effect.

[0003] In the prior art, an intelligent aeration control system based on 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 fan is frequency-controlled to achieve fine-grained control of the aeration of the sewage treatment plant. However, the frequency control range of the current variable frequency fan is limited and cannot provide the required aeration volume. In addition, high-frequency frequency conversion will damage the fan, thereby increasing costs.

[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] The embodiments of the present application provide a compressed air energy storage aeration system and a compressed air energy storage aeration control method, which reduce fan losses, reduce aeration control costs and improve control efficiency.

[0006] In the first aspect, the present application proposes a compressed air energy storage aeration system, including a gas dispersion device, a fan, 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 fan 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, wherein the air compressor is used to compress air into the air compression tank, and the air compression tank is used to store the compressed air and transport the compressed air to the gas dispersion device;

[0010] At least part of the detection device is disposed 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, and control the fan to transport air to the gas dispersion device according to the oxygen concentration and the sludge concentration, and control 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 at the upper part of the water body in the aeration tank, and is used for detecting the sludge concentration at 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 flow meter and a second gas flow meter;

[0016] The water surface gas collecting hood is arranged on the water surface of the aeration tank, and at least a part of the gas oxygen concentration monitoring probe is arranged in the water surface gas collecting hood to detect the oxygen concentration of the escaped gas;

[0017] The first gas flow meter 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 flow meter is arranged between the air compression tank and the gas dispersion device, and is used for detecting the flow of the air compression tank.

[0019] Optionally, the compressed air energy storage aeration system as above 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 compressed air energy storage aeration system as above further includes a first heat exchanger;

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

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

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

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

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

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

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

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

[0030] In a possible implementation, the detection device includes a first sludge concentration detection probe and a second sludge concentration detection probe, and the detection device also includes a water surface gas collection hood, a gas oxygen concentration monitoring probe, a first gas flow meter and a second gas flow meter;

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

[0032] 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 top of the water body detected by the second sludge concentration detection probe;

[0033] Calculate the actual oxygen consumption according to the fugitive gas oxygen concentration 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;

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

[0035] In a possible implementation, according to the water mixing coefficient and the actual oxygen consumption, the fan is controlled to transport air to the gas dispersion device, and the air compression tank is controlled to transport compressed air to the gas dispersion device, including:

[0036] If the water mixing coefficient is not greater than the preset water mixing coefficient threshold, the air volume of the fan is increased, and the amount of compressed air in the air compression tank and / or the frequency of the fan is adjusted according to the flow of the fan detected by the first gas flow meter and the flow of the air compression tank detected by the second gas flow meter;

[0037] 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 is adjusted according to the power of the fan.

[0038] The embodiments of the present application provide a compressed air energy storage aeration system and a method for controlling compressed air energy storage aeration. The compressed air 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 an 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, wherein 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, in which the fan frequency conversion is intelligently controlled, the present application reduces damage to the fan and reduces the cost of aeration control by compressing and storing the air, and then transporting the air to the gas dispersion device and transmitting it to the aeration tank through the fan. At least part of the detection device is arranged in the aeration tank, and is used to detect the oxygen concentration and sludge concentration of 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 according to the oxygen concentration and the sludge concentration, 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. The present application detects the actual oxygen concentration and sludge concentration in the aeration tank through 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, thereby improving the accuracy of the gas delivery amount and effectively improving the aeration control efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application.

[0040] Figure 1 A schematic diagram of the structure of a compressed air energy storage aeration system provided in this application;

[0041] Figure 2 A schematic diagram of a control method for compressed air energy storage aeration provided in this application Figure 1 ;

[0042] Figure 3 A schematic diagram of a control method for compressed air energy storage aeration provided in this application Figure 2 ;

[0043] Figure 4 A schematic diagram of a control method for compressed air energy storage aeration provided in this application Figure 3;

[0044] Figure 5 A schematic diagram of a control method for compressed air energy storage aeration provided in this application Figure 4 ;

[0045] Figure 6 A schematic diagram of the structure of a control device for compressed air energy storage aeration provided in this application;

[0046] Figure 7 A schematic structural diagram of a compressed air energy storage aeration control device provided in this application.

[0047] The above drawings have shown clear embodiments of the present application, which will be described in more detail later. These drawings and text descriptions are not intended to limit the scope of the present application in any way, but to illustrate the concept of the present 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: compressed air tank;

[0052] 104: Air compressor;

[0053] 105: detection device;

[0054] 1051: the first sludge concentration detection probe;

[0055] 1052: second sludge concentration detection probe;

[0056] 1053: Surface air collection hood;

[0057] 1054: Gas oxygen concentration monitoring probe;

[0058] 1055: a first gas flow meter;

[0059] 1056: a second gas flow meter;

[0060] 106: controller;

[0061] 107: Control valve;

[0062] 108: heat exchange tube;

[0063] 109: first heat exchanger;

[0064] 110: Second heat exchanger. DETAILED DESCRIPTION

[0065] Exemplary embodiments will be described in detail herein, examples of which are shown in the accompanying drawings. When the following description refers to the drawings, the same numbers in different drawings represent the same or similar elements unless otherwise indicated. The implementations described in the following exemplary embodiments do not represent all implementations consistent with the present application. Instead, 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 used for analysis, stored data, displayed data, etc.) involved in this application are all information and data authorized by the user or fully authorized by all parties, and the collection, use and processing of relevant data must comply with relevant laws, regulations and standards, and provide corresponding operation entrances for users to choose to authorize or refuse.

[0067] Sewage treatment plants usually use biological treatment methods to degrade pollutants in sewage through microorganisms. In the process of sewage treatment, microorganisms need to consume a large amount of oxygen. Therefore, sewage treatment plants can aerate sewage through fans and aeration systems to allow microorganisms to degrade pollutants in the water. When microorganisms degrade pollutants in the water, the demand for oxygen is constantly changing. In order to ensure that pollutants in sewage can be completely degraded, high-power fans are usually used to increase the air volume to ensure sufficient oxygen supply. However, too much oxygen may cause the dissolved oxygen to increase in the denitrification stage, inhibiting the nitrogen removal process, resulting in high energy consumption, high costs and poor degradation effects.

[0068] In the prior art, an intelligent aeration control system based on 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 fan is frequency-controlled to achieve fine-grained control of the aeration of the sewage treatment plant. However, the frequency control range of the current variable frequency fan is limited and cannot provide the required aeration volume. In addition, high-frequency frequency conversion will damage the fan, thereby increasing costs.

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

[0070] In order to solve the above problems, the core concept of the present application is to provide a compressed air energy storage aeration system including a gas dispersion device, a fan, 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 fan so that the fan transports the air to the gas dispersion device; thereby reducing the number of frequency conversions of the fan, reducing damage to the fan, and thus reducing the cost of aeration regulation. The oxygen concentration and sludge concentration of the aeration tank are detected in real time by a detection device at least partially arranged in the aeration tank; the controller is respectively connected to the detection device, the fan and the air compression tank, and according to the oxygen concentration and sludge concentration detected by the detection device, the compressed air in the air compression tank is transported to the gas dispersion device, thereby realizing accurate transmission of air.

[0071] The technical solution of the present application and how the technical solution of the present application solves the above-mentioned technical problems are described in detail below with specific embodiments. The following specific embodiments can be combined with each other, and the same or similar concepts or processes may not be repeated in some embodiments. The embodiments of the present application will be described below in conjunction with the accompanying drawings.

[0072] Figure 1 This is a schematic diagram of the structure of a compressed air energy storage aeration system provided in this application. Figure 1 As shown, the compressed air energy storage aeration system includes: a gas dispersion device 101, a fan 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 disposed in the aeration tank so as to transport air to the aeration tank so that the microorganisms can degrade the pollutants in the water.

[0075] The fan 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 fan 102 is connected to the gas dispersion device 101 to transmit air to the gas dispersion device 101, so that the air is transmitted to the aeration tank through the gas dispersion device 101, thereby 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, wherein 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 the air during the low-peak period of electricity consumption or at night to obtain compressed air, and store the compressed air in the air compression tank 103 to ensure that the air content is sufficient and sufficient air can be provided when a large amount of air is urgently needed.

[0079] At least part of the detection device 105 is disposed in the aeration tank 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 disposed in the aeration tank, and can accurately detect the oxygen concentration and sludge concentration of the aeration tank, so as 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 fan 102 and the air compression tank 103, and is used to receive the oxygen concentration and sludge concentration detected by the detection device 105, and control the fan 102 to transport air to the gas dispersion device 101 according to the oxygen concentration and the sludge concentration, and control the air compression tank 103 to transport compressed air to the gas dispersion device 101.

[0082] In this embodiment, the controller 106 is used to accurately control the fan 102 and the air compression tank 103 based on the oxygen concentration and sludge concentration detected by the detection device 105, so that the content of air entering the aeration tank is accurate, resource loss is reduced, and aeration control 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 disposed 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 disposed 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, the sludge concentration at the bottom of the aeration tank and the sludge concentration at the top of the water body are detected respectively by the first sludge concentration detection probe 1051 and the second sludge concentration detection probe 1052, 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 gas collection cover 1053, a gas oxygen concentration monitoring probe 1054, a first gas flow meter 1055 and a second gas flow meter 1056;

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

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

[0090] The first gas flow meter 1055 is disposed between the fan 102 and the gas dispersion device 101 and is used to detect the flow of the fan 102 .

[0091] In this embodiment, the flow rate of the fan 102 is detected by the first gas flow meter 1055 so as to timely feed back the air content transmitted by the fan 102 to the detection device 105 .

[0092] The second gas flow meter 1056 is disposed between the compressed air tank 103 and the gas dispersion device 101 , and is used to detect the flow of the compressed air tank 103 .

[0093] In this embodiment, the flow rate of the compressed air tank 103 is detected by the second gas flow meter 1056 so as to timely feed back the air content transmitted by the compressed air 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 fan 102 and / or controls the compressed air transportation of the air compression tank 103 through the plurality of control valves 107 .

[0096] In this embodiment, the air transport of the fan 102 and / or the compressed air transport of the air compression tank 103 are precisely controlled by the control valve 107 to avoid insufficient or excessive air content in the aeration tank, thereby improving the accuracy of air content transmission.

[0097] In this embodiment, the compressed air energy storage aeration system further includes a heat exchange pipe 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 and is used to store the heat 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 for utilizing the heat energy stored in the heat exchange tube 108 .

[0100] In this embodiment, for example, during low-peak electricity consumption or at night, when air is compressed by the air compressor 104 and stored in the air compression tank 103, heat energy is generated, which is stored in the heat exchange tube 108. The heat energy stored in the heat exchange tube 108 is utilized by the first heat exchanger 109, for example, for nighttime heating.

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

[0102] In this embodiment, for example, during peak electricity consumption or during the day, when the flow rate of the air compression tank 103 is controlled by the control valve 107 to be output to the gas dispersion device 101, the total amount of compressed air in the air compression tank 103 is reduced, while the total volume of the air compression tank 103 is not changed, so the compressed air expands to generate cold energy, and the generated cold energy is stored in the heat exchange tube 108, and the cold energy stored in the heat exchange tube 108 is utilized by the second heat exchanger 110, for example, for cooling the air-conditioning system or the fan 102.

[0103] The compressed air energy storage aeration system provided by the present application; air is compressed by an air compressor 104, stored in an air compression tank 103, and the compressed air is transported to a gas dispersion device 101, and then transmitted to an aeration tank; and the gas dispersion device 101 is connected to a fan 102, so that the fan 102 transports air to the gas dispersion device 101; dual control of air transmission is achieved, thereby reducing the number of frequency conversions of the fan 102, reducing damage to the fan 102, and thus reducing the cost of aeration regulation. The oxygen concentration and sludge concentration of the aeration tank are detected in real time through the detection device 105; the controller 106 is respectively connected to the detection device 105, the fan 102 and the air compression tank 103, and according to the oxygen concentration and sludge concentration detected by the detection device 105, the compressed air in the air compression tank 103 is transported to the gas dispersion device 101, thereby improving the efficiency of aeration regulation.

[0104] Figure 2 A schematic diagram of a control method for compressed air energy storage aeration provided in this application Figure 1 The compressed air energy storage aeration control method is applied to Figure 1 The controller of the compressed air energy storage aeration system shown in FIG. Figure 2 As shown, the method includes:

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

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

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

[0108] In this embodiment, different oxygen supply conditions are obtained through oxygen concentration and sludge concentration, and the air is transported to the gas dispersion device through the fan, and the air compression tank is controlled to transport compressed air to the gas dispersion device. Corresponding to different conditions, the air content in the aeration tank is increased or decreased, thereby achieving precise aeration control.

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

[0110] Figure 3 A schematic diagram of a control method for compressed air energy storage aeration provided in this application Figure 2 In this embodiment Figure 2 Based on the example, Figure 3 As shown, the detection device includes a first sludge concentration detection probe and a second sludge concentration detection probe, and the detection device also includes a water surface gas collection cover, a gas oxygen concentration monitoring probe, a first gas flow meter and a second gas flow meter; then in the above step S202, according to the oxygen concentration and the sludge concentration, the fan is controlled to transport air to the gas dispersion device, and the air compression tank is controlled to transport compressed air to the gas dispersion device, including:

[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 top of the water body detected by the second sludge concentration detection probe.

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

[0113]

[0114] Where S2 is the sludge concentration at the bottom of the water body, and S1 is the sludge concentration at the top of the water body.

[0115] S302, calculating the actual oxygen consumption according to the fugitive gas oxygen concentration 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] Wherein, 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. According to the water body mixing coefficient and the actual oxygen consumption, the fan is controlled to transport the air to the gas dispersion device, and the air compression tank is controlled to transport the compressed air to the gas dispersion device.

[0120] In this embodiment, the water mixing coefficient and the actual oxygen consumption are compared with the preset water mixing coefficient and the preset oxygen consumption threshold value to 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 implement the air transportation strategy, so as to achieve precise control of the air content in the aeration tank.

[0121] The control method of compressed air energy storage aeration provided in the embodiment of the present application calculates the water 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 implement the air transportation strategy, so as to achieve precise control of the air content in the aeration tank, thereby improving the aeration regulation efficiency.

[0122] Figure 4 A schematic diagram of a control method for compressed air energy storage aeration provided in this application Figure 3 In this embodiment Figure 3 Based on the example, Figure 4 As shown, the above step S303 controls the fan to transport air to the gas dispersion device according to the water mixing coefficient and the actual oxygen consumption, and controls the air compression tank to transport compressed air to the gas dispersion device, including:

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

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

[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, Figure 5 As shown, the preset oxygen consumption threshold can be obtained by manual setting or 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 lowered to reduce the compressed air delivery 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 compressed air from the air compression tank and reduce the power of the fan.

[0127] The method for controlling compressed air energy storage aeration provided in the embodiment of the present application accurately controls the air delivered by the fan and the air compression tank through a specific water mixing coefficient, a preset water mixing coefficient threshold, actual oxygen consumption and a preset oxygen consumption threshold.

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

[0129] The receiving module 601 is used to receive the oxygen concentration and sludge concentration detected by the detection device.

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

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

[0132] The water body mixing coefficient is calculated based on the sludge concentration at the bottom of the water body detected by the first sludge concentration detection probe and the sludge concentration at the top of the water body detected by the second sludge concentration detection probe.

[0133] Calculate the actual oxygen consumption according to the fugitive gas oxygen concentration 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;

[0134] According to the water body mixing coefficient and the actual oxygen consumption, the fan is controlled to transport the air to the gas dispersion device, and the air compression tank is controlled to transport the compressed air to the gas dispersion device.

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

[0136] If the water mixing coefficient is not greater than the preset water mixing coefficient threshold, the air volume of the fan is increased, and the compressed air volume of the air compression tank and / or the frequency of the fan are adjusted according to the flow of the fan detected by the first gas flow meter and the flow of the air compression tank detected by the second gas flow meter.

[0137] 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 is adjusted according to the power of the fan.

[0138] The present embodiment provides a control device for compressed air energy storage aeration, which can execute the method provided in the above method embodiment. Its implementation principle and technical effect are similar, and will not be described in detail in this embodiment.

[0139] Figure 7 This is a schematic diagram of the structure of a control device for compressed air energy storage aeration provided in this application. Figure 7 As 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 also includes a communication component 703. The processor 701, the memory 702 and the communication component 703 are connected via a bus 704.

[0140] In a specific implementation process, at least one processor 701 executes the computer-executable 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 be found in the above method embodiment, and its implementation principle and technical effect are similar, so this embodiment will not be repeated here.

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

[0143] The memory may include a high-speed memory (Random Access Memory, RAM), and may also include a non-volatile memory (NVM), such as at least one disk storage.

[0144] The bus can be an Industry Standard Architecture (ISA) bus, a Peripheral Component Interconnect (PCI) bus, or 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 ease of representation, the bus in the drawings of this application is not limited to only one bus or one type of bus.

[0145] The present application also provides a computer-readable storage medium, in which computer-executable instructions are stored. When a processor executes the computer-executable instructions, the above method is implemented.

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

[0147] An exemplary readable storage medium is coupled to a processor so that the processor can read information from the readable storage medium and write information to the readable storage medium. Of course, the readable storage medium can also be a component of the processor. The processor and the readable storage medium can be located in an application specific integrated circuit (Application Specific Integrated Circuits, referred to as: ASIC). Of course, the processor and the readable storage medium can also exist in the device as discrete components.

[0148] The division of units is only a logical function division, and there may be other divisions in actual implementation, such as 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 mutual coupling or direct coupling or communication connection shown or discussed can be an indirect coupling or communication connection through some interface, device or unit, which can be electrical, mechanical or other forms.

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

[0150] In addition, each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into 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 this understanding, the technical solution of the present invention, or the part that contributes to the prior art, or the part of the technical solution, can be embodied in the form of a software product. The computer software product is stored in a storage medium, including several instructions for a computer device (which can be a personal computer, server, or network device, etc.) to perform all or part of the steps of the methods of each embodiment of the present invention. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), disk or optical disk, etc. Various media that can store program codes.

[0152] Those skilled in the art can understand that all or part of the steps of implementing the above-mentioned method embodiments can be completed by hardware related to program instructions. The aforementioned program can be stored in a computer-readable storage medium. When the program is executed, the steps of the above-mentioned method embodiments are executed; and the aforementioned storage medium includes: ROM, RAM, disk or optical disk and other media 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 common knowledge or customary technical means in the art not disclosed by the present invention, are not limited to the precise structure described above and shown in the drawings, and may be modified and changed in various ways without departing from the scope thereof. The scope of the present invention is limited only by the appended claims.

Claims

1. A compressed air energy storage aeration system, characterized in that: Including gas dispersion device, fan, air compression tank, air compressor, detection device and controller: The gas dispersion device is arranged in the aeration tank; The fan is connected to the gas dispersion device and is used to transport 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 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; At least part of the detection device is disposed in the aeration tank, and is used to detect the oxygen concentration and sludge concentration of 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 the 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 the sludge concentration, and control the air compression tank to transport the compressed air to the gas dispersion device.

2. The compressed air energy storage aeration system according to claim 1, characterized in that: The detection device comprises a first sludge concentration detection probe and a second sludge concentration detection probe; 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; The second sludge concentration detection probe is arranged at the upper part of the water body of the aeration tank, and is used to detect the sludge concentration at the upper part of the water body.

3. The compressed air energy storage aeration system according to claim 1, characterized in that: The detection device includes a water surface gas collection hood, a gas oxygen concentration monitoring probe, a first gas flow meter and a second gas flow meter; The water surface gas collecting hood is arranged on the water surface of the aeration tank, and at least a part of the gas oxygen concentration monitoring probe is arranged in the water surface gas collecting hood for detecting the oxygen concentration of the escaped gas; The first gas flow meter is arranged between the fan and the gas dispersion device, and is used to detect the flow of the fan; The second gas flow meter is arranged between the air compression tank and the gas dispersion device, and is used to detect the flow of the air compression tank.

4. The compressed air energy storage aeration system according to any one of claims 1 to 3, characterized in that: Also includes heat exchange tubes; 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.

5. The compressed air energy storage aeration system according to claim 4, characterized in that: Also included is a first heat exchanger; The first heat exchanger is connected to the heat exchange tube and is used for utilizing the heat energy stored in the heat exchange tube.

6. The compressed air energy storage aeration system according to claim 5, characterized in that: Also included is a second heat exchanger; The second heat exchanger is connected to the heat exchange tube and is used for utilizing the cold energy stored in the heat exchange tube.

7. The compressed air energy storage aeration system according to any one of claims 1 to 3, characterized in that: Also included are a plurality of control valves; The multiple control valves are connected to the controller, and the controller controls the air transportation of the fan and / or controls the compressed air transportation of the air compression tank through the multiple control valves.

8. A method for controlling compressed air energy storage aeration, characterized in that: A controller for a compressed air energy storage aeration system according to any one of claims 1 to 7, the method comprising: Receiving oxygen concentration and sludge concentration detected by a detection device; According to the oxygen concentration and the sludge concentration, the fan is controlled to transport air to the gas dispersion device, and the air compression tank is controlled to transport the compressed air to the gas dispersion device.

9. The method according to claim 8, characterized in that The detection device comprises a first sludge concentration detection probe and a second sludge concentration detection probe, and the detection device also comprises a water surface gas collection hood, a gas oxygen concentration monitoring probe, a first gas flow meter and a second gas flow meter; According to the oxygen concentration and the sludge concentration, controlling the fan to transport air to the gas dispersion device, and controlling the air compression tank to transport the compressed air to the gas dispersion device, comprises: Calculating a 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 top of the water body detected by the second sludge concentration detection probe; Calculate the actual oxygen consumption according to the fugitive gas oxygen concentration 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; According to the water body mixing coefficient and the actual oxygen consumption, the fan is controlled to transport air to the gas dispersion device, and the air compression tank is controlled to transport the compressed air to the gas dispersion device.

10. The method according to claim 9, characterized in that According to the water body mixing 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 the compressed air to the gas dispersion device, comprises: If the water body mixing coefficient is not greater than the preset water body mixing coefficient threshold, the air volume of the fan is increased, and the compressed air volume of the air compression tank and / or the frequency of the fan are adjusted according to the flow of the fan detected by the first gas flow meter and the flow of the air compression tank detected by the second gas flow meter; 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.

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