Air film granary, control method thereof, electronic device and storage medium

Abstract

The application discloses a kind of air film granary and its control method, electronic equipment and storage medium.The air film granary includes: storehouse, outer membrane component, inner membrane component, detection unit and air curtain generating device;The outer membrane component and inner membrane component are arranged in the inside of storehouse, and the inner membrane component is enclosed to form the internal storage space of granary, for storing grain, and the outer membrane component is wrapped outside the inner membrane component, and the closed interlayer space between the two is air curtain interlayer;The detection unit is arranged in the inside of storehouse, for detecting the temperature and humidity of air film granary and the airflow state in air curtain interlayer;The air curtain generating device is connected with the interlayer space, for providing external gas to the interlayer space, to form continuous air isolation barrier.The application solves the technical problems that the existing anti-condensation means has high energy consumption, airflow organization is complex and may damage the technical effect of air-conditioned grain storage environment, realizes energy-saving regulation and control anti-condensation.

Description

Technical Field

[0001] This invention relates to the field of grain storage, specifically to an air-supported membrane grain silo and its control method, electronic equipment, and storage medium. Background Technology

[0002] In the grain storage sector, air-supported membrane silos (i.e., inflatable membrane grain storage facilities) are gradually becoming an important technological direction to replace traditional brick-concrete or steel silos due to their significant engineering advantages. Their short construction cycle, excellent overall sealing performance, and low overall cost have led to their increasingly widespread application in modern grain depot construction. However, with the deepening of practical use, the inherent defects of traditional single-membrane or simple double-layer membrane structures in terms of heat and humidity control are becoming increasingly prominent, with condensation being the most challenging issue.

[0003] Specifically, when the ambient temperature drops sharply (e.g., during severe winters or nighttime hours with large diurnal temperature variations), the grain inside the storage silo continuously releases heat and moisture due to the grain's own respiration and metabolism, creating a temperature and humidity difference field of "cold outside, hot inside." At this time, the temperature of the inner surface of the silo wall easily drops below the dew point temperature of the air inside, causing saturated water vapor to condense into dense water droplets on the smooth inner wall of the membrane material. This condensate not only drips directly onto and wets the surface of the grain pile, causing localized mold growth, but also provides a suitable microenvironment for the breeding of stored grain pests, seriously threatening grain quality and safety.

[0004] To address this technical challenge, existing technologies often employ passive defense strategies such as adding a single layer of insulation or localized heating. However, these methods are typically energy-intensive and offer only coarse-grained temperature control, making it difficult to accurately respond to instantaneous changes in the climate inside and outside the warehouse. Even though some double-layer membrane structures incorporate the concept of interlayer air insulation, they still lack an active intervention mechanism: once the air inside the interlayer cools due to the temperature difference between the inside and outside, condensation can still occur on the surface of the inner membrane. Furthermore, current methods for preventing grain pests largely rely on chemical agents or simple gas replacement, lacking a solution that organically combines "gas replacement for pest control" with "physical anti-condensation."

[0005] Therefore, there is a need for an air-supported film grain silo and its control method that can intelligently monitor environmental parameters, automatically adjust the interlayer temperature to prevent condensation, and simultaneously possess nitrogen preservation and energy-saving features. Summary of the Invention

[0006] To address the shortcomings of existing technologies, this invention provides an air-supported membrane grain silo and its control method, electronic equipment, and storage medium.

[0007] The present invention adopts the following technical solution.

[0008] The first aspect of the present invention discloses an air-supported membrane grain silo, comprising: a silo body, an outer membrane assembly, an inner membrane assembly, a detection unit, and an air curtain generating device; Both the outer membrane assembly and the inner membrane assembly are located inside the silo. The inner membrane assembly encloses and forms the internal grain storage space of the silo for storing grain. The outer membrane assembly wraps around the inner membrane assembly, and the two form a closed interlayer space called an air curtain interlayer. The detection unit is located inside the silo and is used to detect and obtain the temperature and humidity of the air-film grain silo and the airflow status in the air curtain interlayer. The air curtain generator is located at the bottom of the chamber or the lower edge of the outer membrane assembly and is connected to the interlayer space. It is used to provide external gas to the interlayer space to form a continuous air isolation barrier.

[0009] Preferably, the outer membrane assembly includes: an outer flow guiding membrane and an exhaust port; The lower edge of the outer flow guiding membrane is sealed and fixed to the bottom base of the chamber, forming a closed interlayer space, and an exhaust port is provided on the upper part of the outer flow guiding membrane.

[0010] Preferably, the inner membrane assembly includes: a gas valve, an inner flow guiding membrane, and an inner membrane chamber; The inner layer of the flow guiding membrane is fixedly connected to the opening of the inner membrane chamber to form an internal grain storage space. The inner membrane chamber is used to store grain. An air inlet is provided on the inner layer of the flow guiding membrane, and there is a gas valve at the air inlet.

[0011] Preferably, the detection unit includes: The temperature and humidity sensor inside the warehouse is installed inside the warehouse to collect the temperature and humidity inside the warehouse. Pressure sensors and outer membrane temperature and humidity sensors are located on the inner side of the outer guiding membrane, and are used to capture air pressure and airflow data in the interlayer space and to collect the temperature and humidity of the interlayer air, respectively. An oxygen concentration detector and an inner membrane temperature and humidity sensor are installed on the inner side of the inner flow guiding membrane to collect the oxygen concentration in the inner membrane chamber and the temperature and humidity of the air in the inner membrane chamber, respectively.

[0012] Preferably, the air curtain generating device includes: a blower, a filter, an air inlet distribution pipe, an auxiliary heater, and an air inlet valve; The blower draws in clean external air, filters it through the filter, and then sends it evenly into the outer guide membrane via the intake valve and the intake distribution pipe. The auxiliary heater is located inside the blower to increase the temperature of the intake airflow.

[0013] Preferably, the air-supported membrane grain silo further includes a nitrogen supply device; The nitrogen supply device is located outside the chamber and is connected to the inner membrane assembly via the gas valve to continuously or intermittently fill the interior of the inner membrane assembly with nitrogen.

[0014] Preferably, the air-supported membrane grain silo further includes a condensing unit; the condensing unit is connected to the inside of the silo body via copper pipes for cooling the silo body.

[0015] Preferably, the air-supported grain silo further includes a controller; the controller is connected to the detection unit and the air curtain generating device respectively, and is used to process the data collected by the detection unit and then adjust the air curtain generating device.

[0016] A second aspect of the present invention discloses a control method for controlling an air-supported membrane grain silo as described in the first aspect, comprising the following steps: Step S1: Data acquisition and preprocessing; The detection unit collects the temperature and humidity inside the inner membrane compartment. and interlayer temperature According to the temperature and humidity inside the inner membrane chamber and interlayer temperature Calculate the dew point temperature inside the warehouse and inner membrane surface temperature ; Step S2: Based on the dew point temperature inside the warehouse obtained in step S1 and inner membrane surface temperature Determine whether the condensation risk conditions are met. If they are met, proceed to step S4 and execute the enhanced anti-condensation mode; otherwise, proceed to step S3. Step S3: Collect external meteorological data. Based on the external meteorological data, determine whether the current external environment is under extreme conditions. If it is under extreme conditions, proceed to step S5 and execute the heat preservation / optimization mode. If it is not under extreme conditions, proceed to step S6 and execute the normal anti-condensation mode.

[0017] Preferably, the condensation risk condition is:

[0018] in This is a preset safety margin.

[0019] Preferably, the external meteorological data includes: external temperature. and external wind speed ; The extreme operating conditions are as follows: , or Any one of them, among which , and This is a preset threshold.

[0020] Preferably, the enhanced anti-condensation mode involves increasing the frequency of the blower and activating the auxiliary heater to raise the intake air temperature to the dew point temperature inside the chamber. above; The insulation / optimization mode involves reducing the frequency of the blower. The normal anti-condensation mode is to maintain the frequency of the blower.

[0021] Preferably, it also includes: nitrogen synergistic protection; The nitrogen-assisted protection involves real-time acquisition and detection of the oxygen concentration inside the inner membrane chamber. If the oxygen concentration exceeds the set concentration, the gas valve is opened to replenish nitrogen through the nitrogen supply device; otherwise, it remains closed.

[0022] A third aspect of the present invention discloses an electronic device including a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the computer program, when loaded onto the processor, implements the control method described in the second aspect.

[0023] A fourth aspect of the present invention discloses a storage medium comprising a stored program, wherein, when the program is executed, the device on which the storage medium is located executes the control method described in the second aspect.

[0024] Compared with the prior art, the beneficial effects of the present invention include at least the following: 1. Dual-membrane anti-condensation synergistic control architecture: The outer guiding membrane has a specific porosity and air permeability distribution, which can not only ensure the formation and uniformity of the air curtain, but also serve as a second line of defense, allowing a small amount of water vapor that permeates through the inner membrane to be discharged through the guiding membrane, preventing water accumulation inside the interlayer.

[0025] 2. Dynamic Air Curtain Anti-Condensation Structure: This design abandons the traditional method of filling the entire sandwich structure with cold air, instead employing a double-layer space formed by an inner membrane and an outer porous flow-guiding membrane. An air inlet is located within the outer flow-guiding membrane, while an air outlet / overflow outlet is located at the top or upper side. Clean, dry, low-velocity airflow is injected into the bottom, causing it to flow upwards along the inner membrane surface, forming a continuous "air curtain." This air curtain isolates the warm, humid air inside the chamber from the relatively cool inner membrane surface, preventing the warm, humid air from reaching the dew point.

[0026] 3. Intelligent control based on air pressure difference and airflow velocity: The controller monitors not only temperature and humidity, but also the air pressure difference and airflow velocity within the interlayer. When an increase in humidity or a temperature difference approaching a critical value is detected inside the chamber, the opening of the air inlet valve is automatically adjusted to maintain the continuity and integrity of the air curtain. If the air curtain is interrupted (e.g., due to excessively low wind speed), an alarm is triggered or the air supply is increased; if the air curtain is stable and there is no risk of condensation, it enters the insulation / optimization mode. Simultaneously, energy-saving effects are achieved through the above-mentioned control. Attached Figure Description

[0027] To more clearly illustrate the technical solutions in the embodiments of this disclosure or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this disclosure. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0028] Figure 1 This is a schematic diagram of the air-supported membrane grain silo structure in this invention; Figure 2 This is the system control logic diagram in this invention; In the picture: 100. Warehouse body; 101. Warehouse ambient temperature and humidity sensor; 200. Condensing chiller unit; 300. Outer membrane assembly; 301. Pressure sensor; 302. Outer flow-guiding membrane; 303. Exhaust port; 304. Outer membrane temperature and humidity sensor; 400. Inner membrane assembly; 401. Gas valve; 402. Oxygen concentration detector; 403. Inner membrane temperature and humidity sensor; 404. Inner flow-guiding membrane; 500. Nitrogen supply unit; 600. Air curtain generating device; 601. Blower; 602. Filter; 603. Intake distribution pipe; 604. Intake valve. Detailed Implementation

[0029] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of this invention. The embodiments described in this application are merely some embodiments of this invention, and not all embodiments. Based on the spirit of this invention, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this invention.

[0030] like Figure 1 As shown, Embodiment 1 of the present invention provides an air-supported membrane grain silo, which includes: a silo body 100, an outer membrane assembly 300, an inner membrane assembly 400, a detection unit, and an air curtain generating device 600.

[0031] Both the outer membrane assembly 300 and the inner membrane assembly 400 are located inside the silo body 100. The inner membrane assembly 400 encloses and forms the internal grain storage space of the silo for storing grain. The outer membrane assembly 300 wraps around the inner membrane assembly 400, and the two form a closed interlayer space, namely an air curtain interlayer.

[0032] The detection unit is located inside the silo body 100 and is used to detect and obtain the temperature and humidity of the air-supported grain silo and the airflow status within the air curtain interlayer.

[0033] The air curtain generating device 600 is located at the bottom of the chamber 100 or the lower edge of the outer membrane assembly 300 and is connected to the interlayer space. It is used to provide external gas to the interlayer space. The external gas forms a continuous airflow that moves upward along the inner membrane assembly 400, thereby forming a continuous dynamic air curtain that is closely attached to the inner membrane assembly 400, i.e., an air isolation barrier.

[0034] In a preferred but non-limiting embodiment of the present invention, the outer membrane assembly 300 includes: an outer flow guiding membrane 302 and an exhaust port 303; The lower edge of the outer flow guiding membrane 302 is sealed and fixed on the bottom base of the chamber body 100 to form a closed interlayer space. An exhaust port 303 is provided on the upper part or side of the outer flow guiding membrane 302 to allow excess airflow to overflow into the environment and maintain the air pressure balance inside the chamber.

[0035] In a preferred but non-limiting embodiment of the present invention, the inner membrane assembly 400 includes: a gas valve 401, an inner flow guiding membrane 404, and an inner membrane chamber; The inner layer guiding membrane 404 is fixedly connected to the opening of the inner membrane chamber to form an internal grain storage space. The inner membrane chamber is used to store grain. An air inlet is provided on the inner layer guiding membrane 404. There is a gas valve 401 at the air inlet. The air inlet is connected to an external nitrogen supply device 500. Nitrogen is continuously or intermittently injected into the internal space of the inner membrane assembly 400 through the air inlet.

[0036] In a preferred but non-limiting embodiment of the present invention, both the outer flow guiding membrane 302 and the inner flow guiding membrane 404 are made of high-strength polyethylene (PE) film with a thickness of 0.5 mm, which has a certain strength, good gas flow guiding performance, and excellent tensile strength and weather resistance. The outer flow guiding membrane 302 is provided with tiny micropores.

[0037] More preferably, the pore size d of the micropores ranges from 50 μm to 200 μm, and is more preferably from 80 μm to 120 μm; the porosity of the outer flow guiding membrane 302 is 3% to 8%, and it is arranged in a square grid to form a micropore array.

[0038] As the airflow passes through the micropore array of the outer guide membrane 302, it is dispersed into countless tiny jets. Constrained by the narrow gap between the inner guide membrane 404 and the outer guide membrane 302, these initial jets rapidly merge into a single longitudinal flow field in the vertical direction. The airflow then moves upward along the surface of the inner guide membrane 404, no longer dispersing, forming a continuous air curtain tightly adhering to the inner membrane surface.

[0039] The continuous air curtain has a high airflow velocity, which generates significant shear force, "pushing away" or "sucking away" the hot and humid air that attempts to contact the surface of the inner guide membrane 404, thereby blocking the direct contact between the hot and humid air and the low-temperature inner guide membrane 404.

[0040] In addition, the permeability of the micropores can automatically balance the small pressure difference between the interlayer space and the external environment, preventing the air film structure from undergoing irreversible deformation due to pressure fluctuations; and it allows the small amount of water vapor accumulated in the interlayer to diffuse outward through the micropores, preventing condensation inside the interlayer.

[0041] When the airflow reaches the top of the compartment or the set overflow height, the excess airflow can be discharged to the external environment or the space above the compartment through the exhaust port 303. This process maintains a slightly positive pressure state in the interlayer to prevent cold air from flowing back in.

[0042] The detection unit is located inside the silo body 100 and is used to detect and obtain the temperature and humidity of the air-film grain silo and the airflow status in the air curtain interlayer. In a preferred but non-limiting embodiment of the present invention, the detection unit includes: The temperature and humidity sensor 101 is installed inside the warehouse body 100 and is used to collect the temperature and humidity inside the warehouse body 100. Pressure sensor 301 and outer membrane temperature and humidity sensor 304 are disposed on the inner side of the outer layer guide membrane 302, and are used to capture air pressure and airflow data of the interlayer space and collect the temperature and humidity of the interlayer air, respectively. The oxygen concentration detector 402 and the inner membrane temperature and humidity sensor 403 are disposed on the inner side of the inner layer guide membrane 404, and are used to collect the oxygen concentration in the inner membrane chamber and the temperature and humidity of the air in the inner membrane chamber, respectively.

[0043] More preferably, a plurality of outer membrane temperature and humidity sensors 304 can be arranged along the inner side of the outer flow guiding membrane 302 to take the average value, and a plurality of inner membrane temperature and humidity sensors 403 can be arranged along the inner side of the inner flow guiding membrane 404 to take the average value, so as to make the value more accurate.

[0044] The air curtain generator 600 is located at the bottom of the chamber 100 or the lower edge of the outer membrane assembly 400 and is connected to the interlayer space. It is used to provide external gas to the interlayer space to form a continuous air isolation barrier.

[0045] In a preferred but non-limiting embodiment of the present invention, the air curtain generating device 600 includes: a blower 601, a filter 602, an air inlet distribution pipe 603, and an air inlet valve 604; The blower 601 draws in clean external air (or air that has been dehumidified), filters it through the filter 602, and then sends it evenly into the outer layer of the flow guide membrane 302 through the air inlet valve 604 on the outer layer of the flow guide membrane 302 via the air inlet distribution pipe 603.

[0046] Specifically, clean and dry air enters the interlayer space through the air inlet at the bottom of the silo 100. Driven by the blower 601 and the combined action of thermal buoyancy (if the auxiliary heater is activated), it flows vertically upward along the surface of the inner guide membrane 404. This directional flow forms a stable and continuous air isolation barrier, which can effectively resist the natural upward convection of humid and hot air inside the grain silo.

[0047] More preferably, the upper side of the air intake distribution pipe 603 is covered with holes to ensure that the airflow is sprayed upwards evenly along the height direction of the inner membrane.

[0048] The holes allow for the construction of a uniform air curtain, dispersing the airflow output from the air inlet distribution pipe 603 into a uniform upward laminar flow, forming a continuous air isolation barrier. This air isolation barrier forms a boundary layer with momentum, i.e., a dynamic air curtain, on the outer surface of the inner guide membrane 404. The dynamic air curtain maintains the surface temperature of the inner guide membrane 404 facing the grain storage space above the dew point temperature inside the storage space by performing convective heat transfer and temperature regulation on the outer side of the inner guide membrane 404, thereby preventing water vapor inside the storage space from condensing on the inner surface of the inner membrane.

[0049] More preferably, the air curtain generating device 600 further includes an auxiliary heater, which is disposed inside the blower 601 and is used to increase the temperature of the intake airflow.

[0050] In a preferred but non-limiting embodiment of the present invention, the air-film grain silo further includes a condenser unit 200; the condenser unit 200 is connected to the interior of the silo body 100 via copper pipes and is used to cool the interior of the silo body 100 to provide a suitable storage temperature.

[0051] In a preferred but non-limiting embodiment of the present invention, the air-supported membrane grain silo further includes a nitrogen supply device 500; the nitrogen supply device 500 is disposed outside the silo body 100 and connected to the inner membrane assembly 400.

[0052] In a preferred but non-limiting embodiment of the present invention, the air-supported film grain silo further includes a controller; the controller is connected to the detection unit and the air curtain generating device 600 respectively, and is used to process the data collected by the detection unit and adjust the air curtain generating device 600 to realize the formation of a continuous dynamic air curtain flowing upward along the surface of the inner film assembly in the air curtain interlayer, and to keep the surface temperature of the inner film assembly above the dew point temperature inside the silo.

[0053] like Figure 2 As shown, Embodiment 2 of the present invention provides a control method for controlling an air-supported film grain silo as described in Embodiment 1, comprising the following steps: Step S1: Data Acquisition and Preprocessing The controller collects real-time temperature and humidity data inside the inner membrane compartment via a detection unit. ) and interlayer temperature and humidity ( According to the temperature and humidity inside the inner membrane chamber ( ) and interlayer temperature and humidity ( Calculate the dew point temperature inside the warehouse. and inner membrane surface temperature .

[0054] In a preferred but non-limiting embodiment of the invention, the dew point temperature inside the chamber... The calculation method is based on the temperature inside the warehouse. and relative humidity inside the warehouse It is obtained by calculation using the formula for the properties of moist air. The inner membrane surface temperature The calculation method is to obtain the currently set air curtain wind speed. And according to the air curtain wind speed and the temperature inside the inner membrane chamber The pre-defined correspondence between the inner and inner convective heat transfer coefficients determines the inner convective heat transfer coefficient of the inner membrane. Meanwhile, based on the interlayer temperature The pre-defined correspondence between the inner membrane and the outer convective heat transfer coefficient determines the outer convective heat transfer coefficient of the inner membrane. .

[0055] The preset correspondence can be established in advance through experimental calibration, empirical data, or heat transfer models, and stored in the controller in the form of a lookup table, fitting function, or piecewise correspondence. In a preferred embodiment, the controller uses a preset lookup table to determine the inner convection heat transfer coefficients respectively. and the external convective heat transfer coefficient .

[0056] Neglecting the influence of the inner membrane's own heat capacity on short-term temperature changes, the heat transfer process across the inner membrane is approximated as a quasi-steady-state heat transfer process. Based on the heat balance relationship between the inner and outer sides of the inner membrane, the following formula is used:

[0057] Calculate and obtain a real-time estimate of the inner membrane surface temperature. The estimated value Subsequently, the dew point temperature inside the warehouse was measured. Compare the results to determine the risk of condensation.

[0058] Step S2: Primary Judgment – ​​Condensation Risk Assessment, based on the dew point temperature inside the warehouse obtained in Step S1. and inner membrane surface temperature Determine whether the condensation risk conditions are met:

[0059] in As a preset safety margin, it is usually taken as 1~3°C (e.g. ).

[0060] If the condition is met (high risk): Proceed to step S4 and execute the enhanced anti-condensation mode; If the conditions are not met (low risk): Proceed to step S3 to perform an environmental adaptability assessment.

[0061] Step S3: Secondary Judgment – ​​Environmental Adaptability Selection: Under the premise of no condensation risk, collect external meteorological data ( Based on external meteorological data, determine whether the current external environment constitutes an "extreme working condition"; The extreme operating condition is defined as: 1. The outside temperature is too low: (For example ); 2. External temperature is too high: (For example ); 3. Excessive external wind speed: (For example ).

[0062] The , and The criteria are set according to the specific implementation location. If any one of the above extreme operating conditions is met, the current external environment is considered to be an "extreme operating condition".

[0063] If it is an extreme working condition: proceed to step S5 and execute the insulation / optimization mode. The purpose is to minimize heat loss or prevent the membrane from being impacted by strong winds while ensuring the basic barrier.

[0064] If it is not an extreme operating condition (mild environment): proceed to step S6 and execute the normal anti-condensation mode, the purpose of which is to maintain the continuity of the air curtain with low energy consumption.

[0065] Step S4: Execute the enhanced anti-condensation mode. Start the auxiliary heater to raise the intake air temperature to the chamber dew point temperature. In addition, the blower frequency is increased to maintain high-frequency operation, which is used to quickly raise the surface temperature of the inner membrane, form a high-strength drying barrier, and completely eliminate the risk of condensation.

[0066] Step S5: Execute heat preservation / optimization mode Turn off the auxiliary heater, reduce the blower frequency, and maintain the blower at a low frequency. Utilize the thermal resistance characteristics of still or low-speed air to reduce heat loss through the air curtain (at low temperatures) or prevent external heat from entering (at high temperatures), while maintaining a very weak airflow to prevent local dead zones.

[0067] Step S6: Execute normal anti-condensation mode The auxiliary heater is turned off, and the blower is kept running at medium frequency. In a mild environment, the physical barrier function of the air curtain is maintained with the lowest necessary energy consumption to prevent the slow infiltration of hot and humid air.

[0068] At this time, even if the temperature of the inner membrane body is low, the humid and hot air inside the chamber is relieved and cooled down because of the dry hot airflow (or normal temperature airflow) covering its surface, thus avoiding condensation.

[0069] Step S7: Nitrogen Co-protection Regardless of the airflow mode, the nitrogen supply inside the inner membrane operates independently throughout the entire process, ensuring a safe grain storage environment. The controller collects and monitors the oxygen concentration inside the inner membrane chamber in real time; if the oxygen concentration exceeds a set concentration, for example... If the gas valve 401 is opened, nitrogen is supplied through the nitrogen supply device 500; otherwise, it remains closed.

[0070] It is worth noting that this process is independent of the aforementioned airflow control cycle, and the operation of the air curtain will not affect the nitrogen concentration inside the chamber.

[0071] In this embodiment of the invention, "steps + numbers" is merely a way of expressing the specific implementation of the test method, rather than an absolute restriction on the order of the steps. Under the guidance of the core concept of this invention, changing the order of these steps to obtain the same or similar technical effects all fall within the scope of this invention.

[0072] Embodiment 3 of the present invention provides a fault or anomaly handling method for a control method of an air-supported film grain silo as described in Embodiment 2. Specifically, the anomaly handling in all modes should be unified as follows: 1. Sensor malfunction: If the detection unit fails, the system defaults to conservative mode (i.e., it is considered to be at risk of condensation), automatically switches to enhanced anti-condensation mode, and sends a fault alarm.

[0073] 2. Fan malfunction: If the actual wind speed is detected to be much lower than the set value and continues for more than the set time (e.g., 5 minutes), it is determined to be a fan malfunction, the system will shut down and alarm, and manual intervention is recommended.

[0074] 3. Abnormal membrane deformation / pressure difference: If the differential pressure sensor detects that the pressure difference between the inside and outside of the interlayer exceeds the safety threshold (e.g.) The system immediately closes the intake valve, opens the emergency pressure relief valve (if applicable), or increases the exhaust port opening to protect the membrane structure.

[0075] Example 4: Normal anti-condensation mode. Taking a spring night as an example, the external temperature is moderate, the internal temperature of the grain in the warehouse is slightly higher due to respiration heat, but the overall environment is stable and there is no risk of drastic temperature difference or high humidity. The normal anti-condensation mode is explained.

[0076] Basic parameter settings: Chamber structure: Average gap between inner membrane module 400 and outer membrane module 300 m; radius of curvature of the chamber (Consider it as a plane, correction factor) ).

[0077] Sensor layout: Five temperature sensors 403 are evenly distributed along the height direction on the surface of the inner 404 membrane. ), with a spacing of 2 meters.

[0078] Air curtain medium: clean, dry air, initial temperature set to ambient temperature. Maximum heating temperature .

[0079] Safety margin: (i.e., the required inner membrane surface temperature) ). Critical wind speed calculation model: Under standard operating conditions, the minimum critical wind speed reference value for maintaining the continuity of the air curtain is calculated. It is 0.8 m / s.

[0080] Specifically, the controller uses real-time data from the inner membrane temperature and humidity sensor 403, including the internal temperature... and humidity inside the warehouse The system also uses internationally accepted formulas for the properties of moist air to calculate the air density inside the grain warehouse in real time. :

[0081] in, The density of air inside the warehouse (kg / m³); Local atmospheric pressure (Pa); is the gas constant for dry air; Moisture content, from and Calculate it together.

[0082] Based on the air density inside the warehouse Air density outside the warehouse Based on the average gap height H of the interlayer space formed by the inner membrane component 400 and the outer membrane component 300, and the average radius of curvature R of the grain silo body, the required set wind speed is calculated in real time according to the following formula. At this time, set the wind speed. The minimum critical wind speed reference value is considered :

[0083] in, A safety factor (usually 1.2~1.5) is used to ensure the stability of the air curtain; For curvature correction term, It is the acceleration due to gravity. This refers to the air density inside the grain warehouse. This refers to the air density outside the grain warehouse. This is the flow coefficient (usually taken as 0.6~0.8).

[0084] Pick , (The system allows users to customize the above thresholds based on their local climate zone, such as cold temperate, warm temperate, or subtropical, to adapt to the actual operational needs of different regions.)

[0085] Step 401. Data Acquisition and Status Assessment: Sensor readings: Inside the warehouse: , ; Interlayer temperature: . Average inner membrane surface temperature: .

[0086] By looking up a table or calculating Dew point temperature at time . Current margin: .

[0087] because It was determined to be low risk.

[0088] Check environmental conditions: external temperature It is not at extreme low temperatures and does not require strong insulation.

[0089] Step 402. Control strategy execution: Mode selection: Enter "Normal Anti-condensation Mode". Perform the following actions: Airflow adjustment: The controller adjusts the blower frequency to the medium setting and sets the airflow speed. This speed is below the critical value. Due to the large temperature difference and weak natural convection, this low-speed airflow is sufficient to maintain the static coverage of the air curtain and prevent the intrusion of hot and humid air.

[0090] Heating control: Turn off the auxiliary heater.

[0091] Nitrogen synergy: Oxygen concentration detector display Keep the nitrogen valve closed.

[0092] In this mode, the system consumes only the electrical energy needed to maintain the minimum fan speed, achieving anti-condensation protection under zero-energy heating and significantly reducing operating costs.

[0093] Example 5: Enhanced anti-condensation mode, simulating a scenario of high humidity and high risk on a summer morning after a heavy rain followed by clear skies, with a sharp rise in external humidity and afternoon solar radiation causing a temperature increase on the outer membrane surface, followed by a rapid temperature drop at night. Alternatively, simulating a winter morning when a large amount of moisture accumulates inside the warehouse due to grain respiration, while the temperature of the outer membrane drops sharply due to nighttime radiative cooling.

[0094] Basic parameter settings: Chamber structure: Average gap between inner membrane module 400 and outer membrane module 300 m; radius of curvature of the chamber (Consider it as a plane, correction factor) ).

[0095] Sensor layout: Five temperature sensors 403 are evenly distributed along the height direction on the surface of the inner 404 membrane. ), with a spacing of 2 meters.

[0096] Air curtain medium: clean, dry air, initial temperature set to ambient temperature. Maximum heating temperature .

[0097] Safety margin: (i.e., the required inner membrane surface temperature) ). Critical wind speed calculation model: Under standard operating conditions, the minimum critical wind speed reference value for maintaining the continuity of the air curtain is calculated. It is 0.8 m / s.

[0098] Step 501. Data Acquisition and Status Assessment: Sensor readings: Inside the warehouse: , (High humidity).

[0099] Interlayer temperature: (The outer membrane is cooled), and the temperature at the top of the interlayer is measured at this time.

[0100] Average temperature of inner membrane surface .

[0101] By looking up a table or calculating At that time, dew point temperature .

[0102] Current margin: . The controller reads the current outside temperature. External wind speed .

[0103] because And there are local sensors (such as The temperature is far below the dew point, which is considered a high-risk area.

[0104] Step 502. Control strategy execution: Mode selection: Switch to "Enhanced Anti-condensation Mode" immediately.

[0105] Perform the following actions: Airflow adjustment: The controller quickly increases the blower frequency to a high setting to adjust the airflow speed. The high-speed airflow generates strong shear force, forcibly dispersing the humid and hot boundary layer near the inner membrane surface.

[0106] Heating control: The controller detected far below Start the auxiliary electric heater. Set the intake air temperature target value. Due to the low ambient temperature, the heater operates at full power, causing the airflow blown into the jacket to reach a temperature of [missing information]. .

[0107] Stability monitoring: The differential pressure sensor showed that the interlayer pressure fluctuation was within the normal range, confirming that the air curtain was continuous and uninterrupted.

[0108] Step 503. Dynamic adjustment process: As the heating airflow continues to act, the sensor provides feedback after 10 minutes. Temperature rises to , Rise to At this point, the margin has recovered to The controller gradually reduces the heater power to the maintenance position and adjusts the fan speed back to normal. It smoothly transitions from "enhanced mode" back to "normal mode".

[0109] By employing a dual approach of "high-speed airflow + active heating," the serious risk of condensation was eliminated in a short period of time, preventing grain spoilage caused by dripping condensate.

[0110] Example 6: Insulation / Optimization Mode. In late autumn, with ample sunlight during the day, the outer membrane absorbs heat, causing the interlayer temperature to rise, while the internal temperature remains relatively low. The primary concern here is not condensation, but rather preventing heat transfer or energy waste due to overheating of the interlayer, while simultaneously balancing the air pressure.

[0111] Basic parameter settings: Chamber structure: Average gap between inner membrane module 400 and outer membrane module 300 m; radius of curvature of the chamber (Consider it as a plane, correction factor) ).

[0112] Sensor layout: Five temperature sensors 403 are evenly distributed along the height direction on the surface of the inner 404 membrane. ), with a spacing of 2 meters.

[0113] Air curtain medium: clean, dry air, initial temperature set to ambient temperature. Maximum heating temperature .

[0114] Safety margin: (i.e., the required inner membrane surface temperature) ). Critical wind speed calculation model: Under standard operating conditions, the minimum critical wind speed reference value for maintaining the continuity of the air curtain is calculated. It is 0.8 m / s.

[0115] Step 601. Data Acquisition and Status Assessment: Sensor readings: Inside the warehouse: , . Interlayer temperature: (Heated).

[0116] Average inner membrane surface temperature: . By looking up a table or calculating At that time, dew point temperature .

[0117] Current margin: far greater than There is no risk of condensation. The controller reads the current outside temperature. External wind speed . It is worth noting that here Although it is within a mild range, the key is... The temperature was abnormally high, and the system needed to prevent heat transfer. Therefore, additional checks were performed, and the interlayer temperature was detected. Significantly higher than the temperature inside the warehouse Furthermore, the external wind speed is relatively low. Maintaining high-volume ventilation would carry away valuable heat from the warehouse, resulting in energy waste.

[0118] Step 602. Control strategy execution: Mode selection: Enter "Insulation / Optimization Mode". Perform the following actions: Airflow adjustment: The controller sets the blower frequency to a low setting, maintaining the airflow speed at an extremely low level. This speed is only used to maintain a slight air displacement, balance the internal and external pressure difference, and prevent the membrane from bulging, but it does not allow for effective heat exchange. Heating control: Ensure the heater is completely turned off.

[0119] While ensuring the basic continuity of the air curtain to prevent occasional condensation, the system minimizes heat loss within the chamber, demonstrating its intelligent energy-saving characteristics.

[0120] This invention solves the technical problems of condensation easily occurring on the inner surface of the warehouse wall in traditional air-supported membrane grain silos under large temperature difference environments, as well as the problems of grain becoming damp, moldy, and infested with pests. At the same time, it solves the technical problems of high energy consumption, complex airflow organization, and potential damage to the controlled atmosphere storage environment of existing anti-condensation methods (such as direct cold air circulation). It achieves energy reduction while solving the problem of grain silo anti-condensation, thus realizing energy-saving effect.

[0121] Embodiment 7 of the present invention provides an electronic device, including a memory, a processor, and a computer program stored in the memory and executable on the processor. When the computer program is loaded onto the processor, it implements the above-described detection method.

[0122] Embodiment 8 of the present invention provides a storage medium storing a computer program, which, when executed by a processor, implements the detection method disclosed in the present invention.

[0123] This disclosure can be a system, method, and / or computer program product. A computer program product may include a computer-readable storage medium having computer-readable program instructions loaded thereon for causing a processor to implement various aspects of this disclosure.

[0124] Computer-readable storage media can be tangible devices capable of holding and storing instructions for use by an instruction execution device. Computer-readable storage media can be, for example—but not limited to—electrical storage devices, magnetic storage devices, optical storage devices, electromagnetic storage devices, semiconductor storage devices, or any suitable combination of the foregoing. More specific examples (a non-exhaustive list) of computer-readable storage media include: portable computer disks, hard disks, random access memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM or flash memory), static random access memory (SRAM), portable compact disc read-only memory (CD-ROM), digital multifunction disc (DVD), memory sticks, floppy disks, mechanical encoding devices, such as punch cards or recessed protrusions storing instructions thereon, and any suitable combination of the foregoing. The computer-readable storage media used herein are not to be construed as transient signals themselves, such as radio waves or other freely propagating electromagnetic waves, electromagnetic waves propagating through waveguides or other transmission media (e.g., light pulses through fiber optic cables), or electrical signals transmitted through wires.

[0125] The computer-readable program instructions described herein can be downloaded from computer-readable storage media to various computing / processing devices, or downloaded via a network, such as the Internet, local area network, wide area network, and / or wireless network, to an external computer or external storage device. The network may include copper transmission cables, fiber optic transmission, wireless transmission, routers, firewalls, switches, gateway computers, and / or edge servers. A network adapter card or network interface in each computing / processing device receives the computer-readable program instructions from the network and forwards them to the computer-readable storage media in the respective computing / processing device.

[0126] Computer program instructions used to perform the operations of this disclosure may be assembly instructions, instruction set architecture (ISA) instructions, machine instructions, machine-dependent instructions, microcode, firmware instructions, status setting data, or source code or object code written in any combination of one or more programming languages, including object-oriented programming languages ​​such as Smalltalk, C++, etc., and conventional procedural programming languages ​​such as the "C" language or similar programming languages. The computer-readable program instructions may execute entirely on the user's computer, partially on the user's computer, as a standalone software package, partially on the user's computer and partially on a remote computer, or entirely on a remote computer or server. In cases involving a remote computer, the remote computer may be connected to the user's computer via any type of network—including a local area network (LAN) or a wide area network (WAN)—or may be connected to an external computer (e.g., via the Internet using an Internet service provider). In some embodiments, electronic circuitry, such as programmable logic circuitry, field-programmable gate arrays (FPGAs), or programmable logic arrays (PLAs), is personalized by utilizing the status information of the computer-readable program instructions to implement various aspects of this disclosure.

[0127] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that modifications or equivalent substitutions can still be made to the specific implementation of the present invention. Any modifications or equivalent substitutions that do not depart from the spirit and scope of the present invention should be covered within the protection scope of the claims of the present invention.

Claims

1. An air-supported membrane grain silo, characterized in that, include: The chamber body (100), outer membrane assembly (300), inner membrane assembly (400), detection unit and air curtain generator (600); The outer membrane assembly (300) and the inner membrane assembly (400) are both located inside the silo body (100). The inner membrane assembly (400) encloses and forms the internal grain storage space of the silo for storing grain. The outer membrane assembly (300) wraps around the inner membrane assembly (400), and the two form a closed interlayer space called an air curtain interlayer. The detection unit is located inside the silo body (100) and is used to detect and obtain the temperature and humidity of the air-film grain silo and the airflow status in the air curtain interlayer; The air curtain generator (600) is connected to the interlayer space and is used to provide external gas to the interlayer space to form a continuous air isolation barrier.

2. The air-supported membrane grain silo according to claim 1, characterized in that, The outer membrane assembly (300) includes: an outer flow guiding membrane (302) and an exhaust port (303); The lower edge of the outer flow guiding membrane (302) is sealed and fixed on the bottom base of the chamber body (100) to form a closed interlayer space, and an exhaust port (303) is provided on the outer flow guiding membrane (302).

3. The air-supported membrane grain silo according to claim 1, characterized in that, The inner membrane assembly (400) includes: a gas valve (401), an inner flow guiding membrane (404), and an inner membrane chamber; The inner layer of the flow guiding membrane (404) is fixedly connected to the opening of the inner membrane chamber to form an internal grain storage space. The inner membrane chamber is used to store grain. An air inlet is provided on the inner layer of the flow guiding membrane (404), and a gas valve (401) is provided at the air inlet.

4. The air-supported membrane grain silo according to claim 1, characterized in that, The detection unit includes: An internal temperature and humidity sensor (101) is installed inside the chamber (100) to collect the temperature and humidity inside the chamber (100); Pressure sensor (301) and outer membrane temperature and humidity sensor (304) are disposed on the inner side of outer flow guiding membrane (302) and are used to capture air pressure and airflow data of interlayer space and collect temperature and humidity of interlayer air, respectively. An oxygen concentration detector (402) and an inner membrane temperature and humidity sensor (403) are installed on the inner side of the inner flow guiding membrane (404) to collect the oxygen concentration in the inner membrane chamber and the temperature and humidity of the air in the inner membrane chamber, respectively.

5. The air-supported membrane grain silo according to claim 2, characterized in that, The air curtain generating device (600) includes: a blower (601), a filter (602), an air inlet distribution pipe (603), an auxiliary heater, and an air inlet valve (604). The blower (601) draws in clean air from the outside, filters it through the filter (602), and then sends it evenly into the outer guide membrane (302) through the intake valve (604) and the intake distribution pipe (603). The auxiliary heater is located inside the blower (601) to increase the temperature of the intake airflow.

6. The air-supported membrane grain silo according to claim 3, characterized in that, The air-supported grain silo also includes a nitrogen supply device (500). The nitrogen supply device (500) is located outside the chamber (100) and is connected to the inner membrane assembly (400) through the gas valve (401) to continuously or intermittently fill the interior of the inner membrane assembly (400) with nitrogen.

7. The air-supported membrane grain silo according to claim 1, characterized in that, The air-film grain silo also includes a condenser unit (200); the condenser unit (200) is connected to the inside of the silo body (100) through copper pipes and is used to cool the inside of the silo body (100).

8. The air-supported membrane grain silo according to claim 1, characterized in that, The air-supported grain silo also includes a controller; the controller is connected to the detection unit and the air curtain generator (600) respectively, and is used to process the data collected by the detection unit and adjust the air curtain generator (600).

9. A control method for controlling an air-supported membrane grain silo based on any one of claims 1-8. Its features are, Includes the following steps: Step S1: Data acquisition and preprocessing; The detection unit collects the temperature and humidity inside the inner membrane compartment. and interlayer temperature According to the temperature and humidity inside the inner membrane chamber and interlayer temperature Calculate the dew point temperature inside the warehouse and inner membrane surface temperature ; Step S2: Based on the dew point temperature inside the warehouse obtained in step S1 and inner membrane surface temperature Determine whether the condensation risk conditions are met. If they are met, proceed to step S4 and execute the enhanced anti-condensation mode; otherwise, proceed to step S3. Step S3: Collect external meteorological data. Based on the external meteorological data, determine whether the current external environment is under extreme conditions. If it is under extreme conditions, proceed to step S5 and execute the heat preservation / optimization mode. If it is not under extreme conditions, proceed to step S6 and execute the normal anti-condensation mode.

10. The control method according to claim 9, characterized in that, The condensation risk conditions are as follows: in This is a preset safety margin.

11. The control method according to claim 9, characterized in that, The external meteorological data includes: external temperature. and external wind speed ; The extreme operating conditions are as follows: , or Any one of them, among which , and This is a preset threshold.

12. The control method according to claim 9, characterized in that, The enhanced anti-condensation mode involves increasing the frequency of the blower (601) and activating the auxiliary heater to raise the intake air temperature to the dew point temperature inside the chamber. above; The insulation / optimization mode is to reduce the frequency of the blower (601); The normal anti-condensation mode is to maintain the frequency of the blower (601).

13. The control method according to claim 9, characterized in that, Also includes: Nitrogen gas synergistic protection; The nitrogen-assisted protection is to collect and detect the oxygen concentration in the inner membrane chamber in real time. If the oxygen concentration is greater than the set concentration, the gas valve (401) is opened to supplement nitrogen through the nitrogen supply device (500); otherwise, it remains closed.

14. An electronic device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that, When the computer program is loaded into the processor, it implements the control method according to any one of claims 9-13.

15. A storage medium, characterized in that: The storage medium includes a stored program, wherein, when the program is executed, it controls the device containing the storage medium to perform the control method as described in any one of claims 9-13.

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