Granary local targeting air conditioning system and control method

Abstract

The invention discloses a granary local targeting air conditioning system and a control method, and the granary local targeting air conditioning system comprises a warehouse which is internally provided with a main gas concentration detection sensor and a plurality of auxiliary gas concentration detection sensors; the first inflating assembly is connected to the warehouse and used for inflating nitrogen and / or chlorine dioxide into the warehouse; the second air inflation assembly is connected to the warehouse and comprises a second air outlet pipe and a plurality of air inflation ports which are communicated with the second air outlet pipe and are arranged in one-to-one correspondence with the auxiliary gas concentration detection sensors, and the second air outlet pipe can independently inflate nitrogen and / or chlorine dioxide into the multiple air inflation ports; when the difference value between the numerical value of the main gas concentration detection sensor and the numerical value of the auxiliary gas concentration detection sensor is larger than a first preset value, the second inflation assembly inflates the corresponding inflation inlet. Targeted inflation and nitrogen and / or chlorine dioxide supplementation are carried out through independent inflation channels, and the problems of insufficient local concentration, non-uniform gas distribution and insect pest high temperature caused by warehouse air leakage are solved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of grain storage, in particular to a local targeted controlled atmosphere system for a grain storehouse and a control method applied to the local targeted controlled atmosphere system. BACKGROUND

[0002] In the field of grain storage, it is a crucial task to ensure the quality and safety of grain and reduce pest damage. Nitrogen controlled atmosphere storage technology, as a green and environmentally friendly storage method, has been widely used. By filling high-concentration nitrogen into the grain storehouse, the oxygen content in the storehouse is reduced, thereby inhibiting the respiratory metabolism of pests and achieving the purpose of killing pests. However, due to the limitations of storehouse structure, sealing materials, construction technology and other factors, it is difficult to completely seal the storehouse, and external air can easily enter the storehouse through the gaps, doors and windows of the storehouse, thereby diluting the nitrogen concentration in the storehouse. When the nitrogen concentration is reduced to a certain extent, it cannot maintain effective pest control levels, resulting in a significant reduction in the effect of nitrogen controlled atmosphere pest control. Moreover, during actual grain storage, there is often a large difference in nitrogen concentration in different areas of the grain pile. Some areas may not effectively inhibit pests due to insufficient nitrogen concentration, forming so-called "gas dead angles". These local areas become a breeding ground for pests, which further affects the safety of the entire grain storehouse.

[0003] In addition, pests generate heat during their activities, causing the temperature in local areas to rise. The high-temperature environment in local areas not only benefits the survival and reproduction of pests, but also may accelerate the adaptation of pests to adverse environments, resulting in resistance. At the same time, due to the existence of local gas concentration and high temperature problems, the traditional nitrogen controlled atmosphere storage system often cannot effectively address these local problems. SUMMARY

[0004] The present application aims to at least solve one of the technical problems existing in the prior art. To this end, the present application proposes a local targeted controlled atmosphere system for a grain storehouse, which precisely monitors through main and auxiliary gas concentration detection sensors and main and auxiliary temperature detection sensors, and targets nitrogen and / or chlorine dioxide charging and supplementing through independent charging channels, thereby solving the problems of local concentration deficiency, uneven gas distribution and high temperature caused by air leakage in the storehouse, achieving dynamic self-adaptive gas and temperature control, and improving the safety and effect of grain storage.

[0005] The present application also proposes a control method applied to the local targeted controlled atmosphere system for a grain storehouse.

[0006] According to the local targeted controlled atmosphere system for a grain storehouse, the system comprises: a storehouse for storing grain, a main gas concentration detection sensor is arranged in the storehouse, the main gas concentration detection sensor is located in the middle of the grain and is used for detecting the concentration of nitrogen and / or chlorine dioxide in the storehouse; a first gas filling assembly connected to the warehouse and used for filling nitrogen and / or chlorine dioxide into the warehouse; a second gas filling assembly connected to the warehouse, the second gas filling assembly comprising a second gas outlet pipe and a plurality of gas filling ports in communication with the second gas outlet pipe, the plurality of gas filling ports being respectively arranged at the wall edges of the warehouse and in communication with the interior of the warehouse, and the second gas outlet pipe being capable of independently filling nitrogen and / or chlorine dioxide into the plurality of gas filling ports; The warehouse is provided with a plurality of auxiliary gas concentration detection sensors, the auxiliary gas concentration detection sensors are arranged one-to-one with the gas filling ports, and when the difference between the value of the main gas concentration detection sensor and the value of the auxiliary gas concentration detection sensor is greater than a first preset value, the second gas filling assembly fills gas into the corresponding gas filling port.

[0007] The local targeted gas regulation system for the warehouse has at least the following beneficial effects: the main gas concentration detection sensor arranged in the middle of the warehouse is used to monitor the overall nitrogen and / or chlorine dioxide concentration, and the auxiliary gas concentration detection sensor arranged one-to-one with the corresponding gas filling port at the wall edge of the warehouse where the gas concentration difference is prone to occur is used to accurately obtain the local gas concentration information in real time; in application, when the difference between the value of the main gas concentration detection sensor and the value of the auxiliary gas concentration detection sensor is greater than a first preset value, it indicates that the nitrogen and / or chlorine dioxide concentration in the corresponding local area is obviously insufficient, at this time, the second gas filling assembly can independently fill nitrogen and / or chlorine dioxide into the corresponding gas filling port, accurately solving the problem of local gas concentration unevenness caused by the difficulty of completely sealing the warehouse, the dilution of the nitrogen concentration caused by the entry of external air, and the difference in the gap of the grain pile, avoiding the situation that the local stored grain pests cannot be killed due to insufficient nitrogen concentration, and effectively improving the local pest treatment effect; and the second gas filling assembly can fill gas according to the concentration difference at different positions, improve the gas utilization efficiency, reduce unnecessary gas waste, and further ensure the effective implementation of the local targeted gas regulation function.

[0008] The local targeted gas regulation system for the warehouse has at least the following beneficial effects: the main gas concentration detection sensor arranged in the middle of the warehouse is used to monitor the overall nitrogen and / or chlorine dioxide concentration, and the auxiliary gas concentration detection sensor arranged one-to-one with the corresponding gas filling port at the wall edge of the warehouse where the gas concentration difference is prone to occur is used to accurately obtain the local gas concentration information in real time; in application, when the difference between the value of the main gas concentration detection sensor and the value of the auxiliary gas concentration detection sensor is greater than a first preset value, it indicates that the nitrogen and / or chlorine dioxide concentration in the corresponding local area is obviously insufficient, at this time, the second gas filling assembly can independently fill nitrogen and / or chlorine dioxide into the corresponding gas filling port, accurately solving the problem of local gas concentration unevenness caused by the difficulty of completely sealing the warehouse, the dilution of the nitrogen concentration caused by the entry of external air, and the difference in the gap of the grain pile, avoiding the situation that the local stored grain pests cannot be killed due to insufficient nitrogen concentration, and effectively improving the local pest treatment effect; and the second gas filling assembly can fill gas according to the concentration difference at different positions, improve the gas utilization efficiency, reduce unnecessary gas waste, and further ensure the effective implementation of the local targeted gas regulation function.

[0009] The local targeted gas regulation system for the warehouse has at least the following beneficial effects: the main gas concentration detection sensor arranged in the middle of the warehouse is used to monitor the overall nitrogen and / or chlorine dioxide concentration, and the auxiliary gas concentration detection sensor arranged one-to-one with the corresponding gas filling port at the wall edge of the warehouse where the gas concentration difference is prone to occur is used to accurately obtain the local gas concentration information in real time; in application, when the difference between the value of the main gas concentration detection sensor and the value of the auxiliary gas concentration detection sensor is greater than a first preset value, it indicates that the nitrogen and / or chlorine dioxide concentration in the corresponding local area is obviously insufficient, at this time, the second gas filling assembly can independently fill nitrogen and / or chlorine dioxide into the corresponding gas filling port, accurately solving the problem of local gas concentration unevenness caused by the difficulty of completely sealing the warehouse, the dilution of the nitrogen concentration caused by the entry of external air, and the difference in the gap of the grain pile, avoiding the situation that the local stored grain pests cannot be killed due to insufficient nitrogen concentration, and effectively improving the local pest treatment effect; and the second gas filling assembly can fill gas according to the concentration difference at different positions, improve the gas utilization efficiency, reduce unnecessary gas waste, and further ensure the effective implementation of the local targeted gas regulation function.

[0010] According to some embodiments of the present invention, a local targeted atmosphere control system for grain storage is provided, wherein a nitrogen control valve is provided in the nitrogen branch to control the on / off state of the nitrogen branch; and a chlorine dioxide control valve is provided in the chlorine dioxide branch to control the on / off state of the chlorine dioxide branch.

[0011] According to some embodiments of the present invention, a local targeted atmosphere control system for grain storage is provided, wherein a cooling chamber is provided between the first gas outlet pipe and the first gas mixing chamber, and the cooling chamber is used to cool the gas input into the first gas mixing chamber and output it to the first gas outlet pipe.

[0012] According to some embodiments of the present invention, a local targeted controlled atmosphere system for grain storage is provided, wherein a main temperature detection sensor is installed in the storage room to detect the temperature inside the storage room.

[0013] According to some embodiments of the present invention, a grain warehouse local targeted controlled atmosphere system is provided, wherein multiple secondary temperature detection sensors are provided at the side of the warehouse wall, and the secondary temperature detection sensors are arranged in a one-to-one correspondence with the air inlet.

[0014] According to some embodiments of the present invention, in a grain warehouse local targeted controlled atmosphere system, when the difference between the value of the main temperature detection sensor and the value of the secondary temperature detection sensor is greater than a second preset value, the second inflation component inflates the corresponding inflation port.

[0015] According to some embodiments of the present invention, a localized targeted atmosphere control system for grain storage includes a second gas filling component comprising a second mixing chamber, a second nitrogen branch, and a second chlorine dioxide branch. The second nitrogen branch and the second chlorine dioxide branch are independently connected to the second mixing chamber. The second nitrogen branch is equipped with a second nitrogen control valve to control the on / off state of the second nitrogen branch. The second chlorine dioxide branch is equipped with a second chlorine dioxide control valve to control the on / off state of the second chlorine dioxide branch. The second mixing chamber is equipped with a second gas outlet pipe, which is connected to the storage room and fills the storage room with gas.

[0016] The control method according to the present invention includes a local targeted atmosphere control system for grain storage as described in the present invention, the control method comprising the following steps: Global inflation: The first inflation component inflates nitrogen and / or chlorine dioxide into the chamber, driving the nitrogen concentration inside the chamber to reach 98% or a set concentration, and the chlorine dioxide concentration inside the chamber to ≤3ppm, and then stops inflation; Targeted inflation: After global inflation, when the difference between the value of the main gas concentration detection sensor and the value of the secondary gas concentration detection sensor is greater than a first preset value, the second inflation component inflates the corresponding inflation port. After driving the difference between the value of the main gas concentration detection sensor and the value of the secondary gas concentration detection sensor to be less than 50% of the first preset value, inflation stops. Supplemental inflation: After global inflation, when the difference between the value of the main temperature sensor and the value of the secondary temperature sensor is greater than a second preset value, and the difference between the value of the main gas concentration sensor and the value of the secondary gas concentration sensor is less than 50% of a first preset value, the second inflation component inflates the corresponding inflation port. Inflation stops after driving the difference between the value of the main gas concentration sensor and the value of the secondary gas concentration sensor to be less than 10% of the first preset value.

[0017] The control method of the present invention has at least the following beneficial effects: Through three orderly steps—global aeration, targeted aeration, and supplementary aeration—comprehensive and precise control of gas concentration and temperature within the storage warehouse is achieved. Specifically, the global aeration stage creates a stable and effective gas environment for grain storage throughout the warehouse, effectively inhibiting the survival and reproduction of pests. The targeted aeration stage, based on the numerical difference between the main gas concentration detection sensor and the secondary gas concentration detection sensor, specifically aerates areas with insufficient local gas concentration using a second aeration component, thus solving the problems caused by factors such as warehouse airtightness and grain pile structure. This addresses the issue of uneven local gas concentrations, ensuring that each area achieves an effective insecticidal concentration. During the supplementary aeration phase, by combining the temperature difference between the main and secondary temperature sensors, it identifies scenarios where pests or mold have significantly exceeded the standard. In areas with locally high temperatures and gas concentrations close to the standard, further gas is added to further deteriorate the living environment of pests or mold, thereby completely eliminating them. Through this tiered and precise control strategy, the effect of localized targeted controlled atmosphere storage in grain warehouses is comprehensively improved, maximizing the safety and quality of stored grain and reducing the harm caused by stored grain pests.

[0018] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0019] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which: Figure 1 This is a schematic diagram of a localized targeted atmosphere control system for grain storage according to an embodiment of the present invention; Figure 2This is a flowchart of a control method for a localized targeted atmosphere control system in a grain warehouse, as described in an embodiment of the present invention.

[0020] Explanation of icon numbers: Warehouse 100; Protective cover 101; Main gas concentration detection sensor 110; Auxiliary gas concentration detection sensor 120; Main temperature detection sensor 130; Auxiliary temperature detection sensor 140; First inflation assembly 200; first mixing chamber 201; cooling chamber 202; nitrogen branch line 210; nitrogen control valve 211; chlorine dioxide branch line 220; chlorine dioxide control valve 221; first outlet pipe 230; Second inflation assembly 300; inflation port 301; second mixing chamber 302; second outlet pipe 310; nitrogen branch 2 320; nitrogen control valve 2 321; chlorine dioxide branch 2 330; chlorine dioxide control valve 2 331. Detailed Implementation

[0021] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0022] In the description of this invention, it should be understood that the orientation descriptions, such as up, down, front, back, left, right, etc., are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting this invention.

[0023] In the description of this invention, "several" means one or more, "more than" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. The use of "first" and "second" in the description is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0024] In the description of this invention, unless otherwise explicitly defined, terms such as "set up," "install," and "connect" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this invention in conjunction with the specific content of the technical solution.

[0025] In the description of this invention, the terms "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0026] In the field of grain storage, ensuring grain quality and safety and reducing pest losses are crucial tasks. Nitrogen-controlled atmosphere storage technology, as a green and environmentally friendly method, reduces the oxygen content in grain silos by introducing high concentrations of nitrogen, thereby inhibiting the respiration and metabolism of pests and achieving pest control. It is currently widely used. However, due to limitations in silo structure, sealing materials, and construction techniques, it is difficult to achieve complete airtightness. Outside air can easily enter the silo through gaps, doors, and windows, diluting the nitrogen concentration. When the nitrogen concentration drops to a certain level, it becomes impossible to maintain an effective level of pest control, significantly reducing the effectiveness of nitrogen-controlled atmosphere storage. Furthermore, in actual grain storage, there are often significant differences in nitrogen concentration between different areas of the grain pile. Some areas may lack sufficient nitrogen concentration to effectively suppress pests, forming so-called "gas dead zones." These localized areas become breeding grounds for pests, ultimately affecting the overall safety of the stored grain.

[0027] Furthermore, pests generate heat during their activity, leading to localized temperature increases. These high temperatures not only benefit pests' survival and reproduction but may also accelerate their adaptation to adverse environments, fostering resistance. Simultaneously, due to uneven gas concentrations and high temperatures, traditional nitrogen-based controlled atmosphere storage systems often struggle to effectively address these localized issues.

[0028] Therefore, such as Figure 1As shown, this invention proposes a localized targeted controlled atmosphere system for grain storage, comprising a grain storage silo 100, a main gas concentration detection sensor 110 installed within the grain storage 100, a first inflation component 200 connected to the grain storage 100 for injecting nitrogen and / or chlorine dioxide into the grain storage 100, and a second inflation component 300 connected to the grain storage 100 for injecting nitrogen and / or chlorine dioxide into the grain storage 100. Specifically, the second inflation component 300 includes a second outlet pipe 310 and multiple inflation ports 301 connected to the second outlet pipe 310. The multiple inflation ports 301 are located at the walls of the grain storage 100 and are connected to the interior of the grain storage 100. The second outlet pipe 310 can independently inject nitrogen and / or chlorine dioxide into the multiple inflation ports 301. Furthermore, multiple auxiliary gas concentration detection sensors 120 are installed inside the storage 100. Each auxiliary gas concentration detection sensor 120 is arranged in a one-to-one correspondence with an inflation port 301. In application, the main gas concentration detection sensor 110 is located in the middle of the grain and is used to detect the concentration of nitrogen and / or chlorine dioxide inside the storage 100. When the difference between the value of the main gas concentration detection sensor 110 and the value of the auxiliary gas concentration detection sensor 120 is greater than a first preset value, the second inflation component 300 inflates the corresponding inflation port 301. For example, the values ​​of both the main gas concentration detection sensor 110 and the auxiliary gas concentration detection sensor 120 may both be nitrogen concentration values. Another example is that both the main gas concentration detection sensor 110 and the auxiliary gas concentration detection sensor 120 may both be chlorine dioxide concentration values. Yet another example is that both the main gas concentration detection sensor 110 and the auxiliary gas concentration detection sensor 120 have built-in multi-gas detectors, capable of detecting the concentrations of nitrogen and chlorine dioxide separately. It should be noted that the overall nitrogen and / or chlorine dioxide concentration is monitored by the main gas concentration sensor 110 located in the center of the warehouse 100. Simultaneously, multiple auxiliary gas concentration sensors 120 are arranged at the walls of the warehouse 100, corresponding to the gas inlets 301, where gas concentration differences are likely to occur. This allows for real-time and accurate acquisition of local gas concentration information. In application, when the difference between the values ​​of the main gas concentration sensor 110 and the auxiliary gas concentration sensor 120 exceeds a first preset value, it indicates that the nitrogen and / or chlorine dioxide concentration in the corresponding local area is significantly insufficient. At this time, the first... The second inflation component 300 can independently inflate nitrogen and / or chlorine dioxide into the corresponding inflation port 301, precisely solving the problems of uneven local gas concentration caused by the difficulty in completely sealing the warehouse 100, the dilution of nitrogen concentration by outside air, and the unevenness of gaps in the grain pile. This avoids the situation where local stored grain pests cannot be killed due to insufficient nitrogen concentration, effectively improving the local pest control effect. Furthermore, the second inflation component 300 can perform targeted inflation according to the concentration differences in different locations, improving gas utilization efficiency, reducing unnecessary gas waste, and further ensuring the effective realization of the local targeted modified atmosphere function.

[0029] In the actual operating environment of a grain silo, grain particles in the grain pile can shift due to various factors such as ventilation and vibration, posing a risk of entering the air inlet 301 and causing blockage. In this regard, refer to... Figure 1 In some embodiments of the present invention, a protective cover 101 is provided inside the storage room 100, corresponding one-to-one with the air inlet 301 and placing the air inlet 301 therein. For example, the protective cover 101 is a hollow structure or a mesh structure, which allows gas to flow out and prevents grains from entering from the outside, providing physical protection for the air inlet 301, effectively blocking the intrusion of grains and other debris, and ensuring that the air inlet 301 is always unobstructed. Furthermore, this ensures that when the second air inflation component 300 injects nitrogen and / or chlorine dioxide into local areas such as the walls of the storage room 100 through the air inlet 301, the gas can pass smoothly, avoiding the problem of local gas concentration not being replenished in time due to blockage of the air inlet 301. This maintains the stability and reliability of the system's regulation of local gas concentration, thereby ensuring the effective implementation of the local targeted modified atmosphere function and improving the control effect against local pests during grain storage.

[0030] Refer to Figure 1In some embodiments of the present invention, the first gas filling component 200 includes a first gas mixing chamber 201, a nitrogen branch 210, and a chlorine dioxide branch 220. The nitrogen branch 210 and the chlorine dioxide branch 220 are independently connected to the first gas mixing chamber 201 and are capable of filling the first gas mixing chamber 201. The first gas mixing chamber 201 is provided with a first gas outlet pipe 230, which is connected to the storage room 100 and fills the storage room 100. In actual grain storage, the filling of nitrogen and chlorine dioxide can be independently controlled according to different grain storage needs and the gas conditions inside the storage room 100, giving the system a high degree of flexibility in gas filling. For example, when only a low-oxygen environment using nitrogen is needed to suppress pests, nitrogen branch 210 can be opened alone. Alternatively, if nitrogen and chlorine dioxide are needed to work synergistically to enhance the insecticidal effect, both branches can be opened simultaneously. After the two gases are fully mixed in the first mixing chamber 201, they are evenly injected into the storage room 100 through the first outlet pipe 230, creating a suitable gaseous environment for the entire storage room 100. This helps maintain the overall nitrogen and / or chlorine dioxide concentration within the storage room 100, laying a good foundation for subsequent localized targeted controlled atmosphere treatment and enhancing the overall control capability of the controlled atmosphere system against stored grain pests. Optionally, nitrogen branch 210 is equipped with a nitrogen control valve 211 to control the on / off state of nitrogen branch 210; chlorine dioxide branch 220 is equipped with a chlorine dioxide control valve 221 to control the on / off state of chlorine dioxide branch 220, providing the system with precise gas flow control capabilities. During grain storage operations, staff can precisely control the injection of nitrogen and chlorine dioxide based on real-time gas concentration monitoring data within warehouse 100 and specific grain storage requirements. For example, when the nitrogen concentration in warehouse 100 is low but the chlorine dioxide concentration meets the standard, the nitrogen injection rate can be adjusted independently via nitrogen control valve 211. Similarly, when chlorine dioxide is needed for auxiliary pest control, its injection timing and flow rate can be precisely controlled via chlorine dioxide control valve 221. This precise control not only improves the efficiency of gas resource utilization and avoids unnecessary gas waste, but also more accurately maintains the gas concentration balance within warehouse 100, ensuring that the gas concentration remains at a level that effectively inhibits pests, thereby enhancing grain storage safety and the effectiveness of controlled atmosphere storage.

[0031] In grain storage environments, gas temperature has a significant impact on stored grain. Excessively high gas temperatures may promote pest reproduction and adversely affect grain quality, such as accelerating respiration and causing the grain to heat up and mold. In some embodiments of the present invention, such as... Figure 1As shown, a cooling chamber 202 is provided between the first gas outlet pipe 230 and the first mixing chamber 201. This cooling chamber 202 cools the gas input into the first mixing chamber 201 and outputs it to the first gas outlet pipe 230. It is understood that the presence of the cooling chamber 202 can regulate the gas input into the first mixing chamber 201 to a suitable temperature, preventing high-temperature gas from directly entering the storage room 100 and adversely affecting the grain storage environment. By lowering the gas temperature, a more stable and suitable grain storage environment is created for the grain storage room, which helps improve the effectiveness of nitrogen-based modified atmosphere packaging for pest control, while protecting the quality of the grain, reducing potential risks to grain storage due to temperature factors, and further enhancing the reliability and effectiveness of the entire grain storage system. For example, an evaporator is installed inside the cooling chamber 202. During operation, the evaporator absorbs heat from the environment inside the cooling chamber 202, thereby reducing the temperature of the gas inside the cooling chamber 202. A compressor and condenser are correspondingly configured to form a refrigeration system with the evaporator, similar to the working principle of air conditioning refrigeration, which will not be elaborated here.

[0032] In nitrogen-controlled atmosphere storage of grain, temperature is a critical environmental parameter, closely related to the survival and reproduction of pests and the effectiveness of the controlled atmosphere treatment. (Refer to...) Figure 1In some embodiments of the present invention, a main temperature sensor 130 is installed inside the storage room 100 to detect the temperature inside the storage room 100, providing important reference for the operation of the grain storage system. In application, staff can use the temperature data fed back by the main temperature sensor 130 to determine whether the current temperature inside the storage room 100 is within a range favorable for grain storage, and whether adjustments to the gas filling strategy and temperature regulation measures are necessary. This sensor provides basic data support for subsequent localized targeted atmosphere regulation based on temperature, helping to achieve comprehensive and precise control of the grain storage environment inside the storage room 100, ensuring the safety and quality of stored grain. Furthermore, multiple secondary temperature sensors 140 are installed along the walls of the storage room 100, with each secondary temperature sensor 140 corresponding to a gas filling port 301. On the one hand, the walls of warehouse 100 are typically areas where outside air easily seeps in, making them prone to localized temperature anomalies. The secondary temperature sensor 140 can accurately monitor the temperature in these localized areas, acquiring real-time temperature information from key locations such as the walls. This helps to promptly identify and resolve localized high-temperature issues, enabling effective monitoring and regulation of localized temperatures within warehouse 100, further enhancing the stability and safety of the grain storage environment. On the other hand, insufficient nitrogen or chlorine dioxide filling at the walls makes it easier for pests and mold to proliferate. If pests or mold levels are significantly excessive, their respiration generates considerable heat. Therefore, the secondary temperature sensor 140 can detect and determine when pests or mold levels are significantly excessive. Combined with the second inflation component 300, further gas replenishment can be provided to areas with localized high temperatures and near-compliant gas concentrations, effectively eliminating pests and mold. In some applications, precise targeted adjustment based on temperature differences is used. When the difference between the value of the main temperature sensor 130 and the value of the secondary temperature sensor 140 exceeds a second preset value, the second inflation component 300 inflates the corresponding inflation port 301 to address issues that may be caused by pest activity, uneven gas distribution, or other factors. At this time, the second inflation component 300 injects nitrogen and / or chlorine dioxide into the localized area through the corresponding inflation port 301. This replenishes any potentially insufficient gas concentration in the area, and the low-temperature injected gas helps alleviate localized high temperatures. This targeted adjustment method can simultaneously address both gas concentration and temperature issues in localized areas, effectively improving the local grain storage environment, enhancing grain safety and quality, and achieving precise control of the local environment within the warehouse 100.Furthermore, similar to the first inflation assembly 200, the second inflation assembly 300 includes a second mixing chamber 302, a nitrogen branch 320, and a chlorine dioxide branch 330. The nitrogen branch 320 and the chlorine dioxide branch 330 are independently connected to the second mixing chamber 302. The nitrogen branch 320 is equipped with a nitrogen control valve 321 to control the on / off state of the nitrogen branch 320. The chlorine dioxide branch 330 is equipped with a chlorine dioxide control valve 331 to control the on / off state of the chlorine dioxide branch 330. The second mixing chamber 302 is equipped with a second outlet pipe 310, which is connected to the storage room 100 and inflates the storage room 100. Understandably, the nitrogen branch 320 and the chlorine dioxide branch 330 are independently connected to the second mixing chamber 302, allowing for flexible adjustment of the nitrogen and chlorine dioxide injection ratios according to the actual needs of localized areas such as the walls of the storage 100 when injecting gas. To this end, the nitrogen control valve 321 and the chlorine dioxide control valve 331 control the on / off state of their respective branches, enabling precise control of the gas injection volume and timing, further optimizing the control of gas injection into localized areas. In application, after the second mixing chamber 302 thoroughly mixes the two gases, the mixture is injected into the storage 100 through the second outlet pipe 310, achieving precise gas supply to localized areas. This precise control improves the accuracy and effectiveness of localized gas concentration and temperature regulation, better meeting the diverse needs of targeted gas control in grain storage areas and enhancing the effectiveness of targeted gas control.

[0033] In one practical application, a local grain temperature of 26.6°C was detected. After 7 days, the temperature rose to 29.0°C due to local insect infestation. After local aeration treatment, the local grain temperature dropped to 24.8°C after 5 days, a decrease of 4.2°C, which was very effective.

[0034] Refer to Figure 2 The control method according to an embodiment of the present invention is applied to a grain warehouse local targeted atmosphere control system according to an embodiment of the present invention, wherein the control method includes the following steps: S100, Global inflation: The first inflation component 200 inflates nitrogen and / or chlorine dioxide into the chamber 100, driving the nitrogen concentration inside the chamber 100 to reach 98% or the set concentration, and stopping inflation after the chlorine dioxide concentration inside the chamber 100 is ≤3ppm. S200, Targeted inflation: After global inflation, when the difference between the value of the main gas concentration detection sensor 110 and the value of the secondary gas concentration detection sensor 120 is greater than a first preset value, the second inflation component 300 inflates the corresponding inflation port 301. After driving the difference between the value of the main gas concentration detection sensor 110 and the value of the secondary gas concentration detection sensor 120 to be less than 50% of the first preset value, inflation stops. S300, Supplemental inflation: After global inflation, when the difference between the value of the main temperature sensor 130 and the value of the secondary temperature sensor 140 is greater than a second preset value, and the difference between the value of the main gas concentration sensor 110 and the value of the secondary gas concentration sensor 120 is less than 50% of the first preset value, the second inflation component 300 inflates the corresponding inflation port 301. Inflation stops after driving the difference between the value of the main gas concentration sensor 110 and the value of the secondary gas concentration sensor 120 to be less than 10% of the first preset value.

[0035] According to the control method of this invention, comprehensive and precise control of gas concentration and temperature within the storage warehouse 100 is achieved through three orderly steps: global inflation, targeted inflation, and supplementary inflation. The global inflation stage creates a stable and effective gas environment for grain storage throughout the storage warehouse 100, effectively inhibiting the survival and reproduction of pests. The targeted inflation stage, based on the difference between the values ​​detected by the main gas concentration sensor 110 and the secondary gas concentration sensor 120, specifically inflates areas with insufficient gas concentration using the second inflation component 300, thus addressing the issues caused by factors such as the airtightness of the storage warehouse 100 and the structure of the grain pile. To address the issue of uneven local gas concentrations caused by pests, this system ensures that each area reaches an effective insecticidal concentration. During the supplementary aeration phase, by combining the temperature difference between the main temperature sensor 130 and the secondary temperature sensor 140, it identifies scenarios where pests or mold have significantly exceeded the standard. In these areas with high local temperatures and gas concentrations close to the standard, further gas is supplemented to further deteriorate the living environment of pests or mold, thereby completely eliminating them. Through this tiered and precise control strategy, the effect of localized targeted controlled atmosphere storage in grain silos is comprehensively improved, maximizing the safety and quality of stored grain and reducing the harm caused by stored grain pests.

[0036] Other configurations and operations of the control method according to embodiments of the present invention are known to those skilled in the art and will not be described in detail here.

[0037] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present invention.

Claims

1. A localized targeted controlled atmosphere system for grain storage, characterized in that, include: A warehouse for storing grain, wherein a main gas concentration detection sensor is installed in the warehouse, the main gas concentration detection sensor being located in the middle of the grain and used to detect the concentration of nitrogen and / or chlorine dioxide in the warehouse; A first inflation assembly is connected to the warehouse and used to inflate the warehouse with nitrogen and / or chlorine dioxide. A second inflation assembly is connected to the warehouse. The second inflation assembly includes a second air outlet pipe and a plurality of inflation ports connected to the second air outlet pipe. The plurality of inflation ports are respectively located at the side of the warehouse wall and connected to the interior of the warehouse. The second air outlet pipe can independently inflate the plurality of inflation ports with nitrogen and / or chlorine dioxide. The warehouse is equipped with multiple auxiliary gas concentration detection sensors, which are arranged one-to-one with the inflation ports. When the difference between the value of the main gas concentration detection sensor and the value of the auxiliary gas concentration detection sensor is greater than a first preset value, the second inflation component inflates the corresponding inflation port.

2. The grain storage local targeted atmosphere control system according to claim 1, characterized in that: The warehouse is equipped with multiple protective covers, each corresponding to an air inlet, with the air inlets located inside the protective covers.

3. The grain storage local targeted atmosphere control system according to claim 1, characterized in that: The first inflation assembly includes a first mixing chamber, a nitrogen branch and a chlorine dioxide branch. The nitrogen branch and the chlorine dioxide branch are independently connected to the first mixing chamber and can inflate the first mixing chamber. The first mixing chamber is provided with a first air outlet pipe, which is connected to the warehouse and inflates the warehouse.

4. A grain storage local targeted atmosphere control system according to claim 3, characterized in that: The nitrogen branch is equipped with a nitrogen control valve to control the on / off state of the nitrogen branch; the chlorine dioxide branch is equipped with a chlorine dioxide control valve to control the on / off state of the chlorine dioxide branch.

5. A localized targeted atmosphere control system for grain storage according to claim 3, characterized in that: A cooling chamber is provided between the first gas outlet pipe and the first gas mixing chamber. The cooling chamber is used to cool the gas input into the first gas mixing chamber and output it to the first gas outlet pipe.

6. A grain storage localized targeted atmosphere control system according to claim 1 or 5, characterized in that: The warehouse is equipped with a main temperature detection sensor, which is used to detect the temperature inside the warehouse.

7. A grain storage localized targeted atmosphere control system according to claim 6, characterized in that: Multiple secondary temperature sensors are installed along the walls of the warehouse, and each secondary temperature sensor is arranged in a corresponding manner to an air inlet.

8. A localized targeted controlled atmosphere system for grain storage according to claim 7, characterized in that: When the difference between the value of the main temperature sensor and the value of the auxiliary temperature sensor is greater than a second preset value, the second inflation component inflates the corresponding inflation port.

9. A localized targeted controlled atmosphere system for grain storage according to claim 1, characterized in that: The second inflation assembly includes a second mixing chamber, a second nitrogen branch, and a second chlorine dioxide branch. The second nitrogen branch and the second chlorine dioxide branch are independently connected to the second mixing chamber. The second nitrogen branch is equipped with a second nitrogen control valve to control the on / off state of the second nitrogen branch. The second chlorine dioxide branch is equipped with a second chlorine dioxide control valve to control the on / off state of the second chlorine dioxide branch. The second mixing chamber is equipped with a second air outlet pipe, which is connected to the storage chamber and inflates the storage chamber.

10. A control method, characterized in that: The control method, applied to a grain warehouse local targeted atmosphere control system as described in claim 8, includes the following steps: Global inflation: The first inflation component inflates nitrogen and / or chlorine dioxide into the chamber, driving the nitrogen concentration inside the chamber to reach 98% or a set concentration, and the chlorine dioxide concentration inside the chamber to ≤3ppm, and then stops inflation; Targeted inflation: After global inflation, when the difference between the value of the main gas concentration detection sensor and the value of the secondary gas concentration detection sensor is greater than a first preset value, the second inflation component inflates the corresponding inflation port. After driving the difference between the value of the main gas concentration detection sensor and the value of the secondary gas concentration detection sensor to be less than 50% of the first preset value, inflation stops. Supplemental inflation: After global inflation, when the difference between the value of the main temperature sensor and the value of the secondary temperature sensor is greater than a second preset value, and the difference between the value of the main gas concentration sensor and the value of the secondary gas concentration sensor is less than 50% of a first preset value, the second inflation component inflates the corresponding inflation port. Inflation stops after driving the difference between the value of the main gas concentration sensor and the value of the secondary gas concentration sensor to be less than 10% of the first preset value.

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