A tobacco atmosphere conditioning and curing system

Abstract

This invention relates to a modified atmosphere storage system for tobacco. The system includes multiple flexible, airtight tents configured to house stacked tobacco; a gas source configured to provide high-purity nitrogen; a distributed pipeline network comprising modified atmosphere pipes distributed above or underground within the tobacco storage facility and extending to the vicinity of the multiple flexible, airtight tents, the modified atmosphere pipes being connected to the gas source, and the modified atmosphere pipes having multiple supply and exhaust ends near the multiple flexible, airtight tents, the supply ends being connected to the air inlets of the flexible, airtight tents via flexible pipes, and the exhaust ends being connected to the exhaust outlets of the flexible, airtight tents via flexible pipes; and a comprehensive monitoring station configured to detect, display, and adjust the modified atmosphere parameters within the multiple flexible, airtight tents. This invention can efficiently achieve tobacco preservation.

Description

Technical Field

[0001] The invention relates to the technical field of tobacco curing, in particular to a tobacco atmosphere conditioning curing system. Background Art

[0002] Tobacco needs to be stored in the warehouse for more than 3 years for natural aging before it can be used for production. For large-volume tobacco stacks, the weight of tobacco in each stack is mostly in the range of several tons to dozens of tons. During the storage of tobacco stacks, problems such as insects and mold often occur. At present, dehumidifiers and air conditioners are often configured in storage warehouses to suppress tobacco leaf insect pests and mildew. However, insect pests and mildew problems still occur from time to time, causing serious economic losses.

[0003] As a green and environmentally friendly storage technology, controlled atmosphere curing technology is gradually applied to tobacco storage. At present, controlled atmosphere curing technology has been applied to tobacco curing and aging. However, the current tobacco controlled atmosphere curing technology system still requires a lot of manual operations, such as opening and closing of pipeline valves, measuring the controlled atmosphere parameters in the airtight enclosure and uploading the measured data, etc. Not only is the operation of the controlled atmosphere curing system inconvenient, but it is also difficult to monitor the controlled atmosphere parameters in the tobacco stack. Therefore, the art is in urgent need of a more convenient and intelligent controlled atmosphere curing system. Summary of the invention

[0004] In view of the technical problems existing in the prior art, according to one aspect of the present invention, a tobacco atmosphere conditioning and curing system is proposed, comprising: a plurality of flexible airtight tents configured to accommodate stacked tobacco; a distributed pipe network; a plurality of comprehensive monitoring atmosphere conditioning stations, and an air source configured to provide high-purity nitrogen;

[0005] Wherein, the distributed pipe network includes an air-conditioning pipeline distributed above or underground in the tobacco curing warehouse and extending to the vicinity of the multiple flexible tents, the air-conditioning pipeline is connected to the air source, and the air-conditioning pipeline is provided with multiple air supply ends and air outlet ends near the multiple flexible air-tight tents, the air supply end is connected to the air inlet of the flexible air-tight tent through a flexible pipe, and the air outlet end is connected to the exhaust port of the flexible air-tight tent through a flexible pipe;

[0006] The comprehensive monitoring gas conditioning station includes a processor, a gas conditioning module, a detection module, a communication module, and an input-output module; the processor is electrically connected to the gas conditioning module, the detection module and the input-output module; the gas conditioning module is connected to a plurality of solenoid valves on the gas conditioning pipeline, and adjusts and / or maintains the oxygen content and humidity in a plurality of nearby flexible air-tight tents by controlling the switches of the plurality of solenoid valves; the detection module is configured to detect the oxygen content and humidity of the gas from a plurality of nearby flexible air-tight tents; the communication module is configured to send the oxygen content and humidity of the gas from a plurality of nearby flexible air-tight tents of the detection module to a remote service platform; the input-output module is configured to display the oxygen content and humidity of the gas in a plurality of nearby flexible air-tight tents, and is capable of receiving instructions from a user and sending them to the processor; the processor is capable of responding to the user's instructions and controlling the gas conditioning module and / or the detection module to perform corresponding actions.

[0007] Optionally, the gas conditioning module of the integrated monitoring gas conditioning station is configured to control multiple solenoid valves on the gas pipeline to form a gas channel from one of the multiple nearby flexible air-tight tents to the detection module; the integrated monitoring gas conditioning station is further configured to extract gas from the flexible air-tight tent for detection.

[0008] Optionally, the detection module includes an air suction port, an internal air circuit, a fan, an oxygen sensor, and a humidity sensor; the air suction port is connected to the air inlet of the internal air circuit, and the air outlet of the internal air circuit is provided with branches respectively connected to the air inlets of the oxygen sensor and the humidity sensor, and independently detects the oxygen content and humidity of the gas in the flexible airtight tent at the same time, and the air outlets of the oxygen sensor and the humidity sensor are connected to the fan through the internal air circuit.

[0009] Optionally, a temperature sensor is respectively provided in the multiple flexible airtight tents, and the temperature in the flexible airtight tents is sent to the comprehensive monitoring and gas conditioning station in a wired or wireless manner, and then sent to the remote service platform via the comprehensive monitoring and gas conditioning station.

[0010] Optionally, in response to the oxygen content and / or humidity in the multiple flexible air-tight tents exceeding a predetermined range, the comprehensive monitoring gas conditioning station is configured to open the corresponding solenoid valve by controlling the gas conditioning module, thereby forming multiple gas channels from the gas source through the distributed pipeline network to the multiple flexible air-tight tents, so as to introduce gas-conditioned high-purity nitrogen into the multiple flexible air-tight tents and discharge the gas in the multiple flexible air-tight tents through the distributed pipeline network, and part of the gas discharged from the multiple flexible air-tight tents passes through the detection module of the comprehensive monitoring gas conditioning station.

[0011] Optionally, the comprehensive monitoring gas conditioning station is configured to control the gas conditioning module to open the corresponding solenoid valve, thereby forming multiple gas channels from the multiple flexible airtight tents to the detection module in a time-sharing manner, so as to realize the oxygen content and / or humidity monitoring of the gas in the multiple flexible airtight tents.

[0012] Optionally, in response to the temperature in one or more of the flexible airtight tents exceeding a predetermined range, the remote service platform is configured to instruct a zone temperature control facility to adjust the temperature of the area where the one or more flexible airtight tents are located.

[0013] Optionally, the processor is configured to open the corresponding solenoid valve by controlling the atmosphere control module, thereby forming multiple gas channels from the gas source through the distributed pipeline network to the multiple flexible air-tight tents, so as to introduce atmosphere-controlled high-purity nitrogen into the multiple flexible air-tight tents and keep the oxygen content in the multiple flexible air-tight tents below 1%, thereby achieving insecticidal maintenance of the tobacco in the multiple flexible air-tight tents.

[0014] Optionally, the system also includes a remote monitoring platform running on the remote service platform, which is used to receive the oxygen content, humidity and / or temperature of the gas in the flexible airtight tent reported by the comprehensive monitoring gas conditioning station, and to query, analyze and display the oxygen content, humidity and / or temperature of the gas in the flexible airtight tent.

[0015] Optionally, the exhaust port and the air outlet of the flexible airtight tent are connected to the flexible pipe via quick-connect plugs.

[0016] Optionally, a manually adjustable valve is provided on the pipeline connecting the multiple flexible airtight tents and the gas source to control the gas flow entering the multiple flexible airtight tents.

[0017] According to another aspect of the present invention, a tobacco atmosphere conditioning and maintenance method is provided, comprising: in response to the oxygen content and / or humidity in a plurality of the flexible airtight tents storing tobacco stacks exceeding a predetermined range, controlling the atmosphere conditioning module to open corresponding solenoid valves, thereby forming a plurality of gas channels from a gas source through a distributed pipeline network to the plurality of the flexible airtight tents, for introducing atmosphere-conditioned high-purity nitrogen into the plurality of flexible airtight tents and discharging the gas in the plurality of flexible airtight tents through the distributed pipeline network, and the gas discharged from the plurality of flexible airtight tents partially passes through the detection module of the comprehensive monitoring atmosphere conditioning station.

[0018] Optionally, in response to the temperature in one or more of the flexible airtight tents exceeding a predetermined range, the zone temperature control facility is instructed to control the temperature of the area where the one or more flexible airtight tents are located.

[0019] Optionally, by controlling the atmosphere control module to open the corresponding solenoid valve, multiple gas channels are formed from the gas source through the distributed pipeline network to the multiple flexible air-tight tents, so as to introduce atmosphere-conditioned high-purity nitrogen into the multiple flexible air-tight tents and keep the oxygen content in the multiple flexible air-tight tents below 1%, thereby achieving insecticide maintenance for the tobacco in the multiple flexible air-tight tents.

[0020] The tobacco atmosphere conditioning and maintenance system proposed in this application uses flexible airtight tents to seal tobacco stacks, and uses distributed pipe networks, comprehensive monitoring atmosphere conditioning stations and other equipment to establish an "airtight, constant humidity, clean, low-oxygen, stable" maintenance and aging environment for each tobacco stack; a comprehensive monitoring atmosphere conditioning station is used to adjust and monitor environmental parameters in multiple flexible airtight tents to achieve tobacco leaf insecticide, mildew prevention and antibacterial protection measures. Moreover, the tobacco atmosphere conditioning and maintenance system of this application is easy to operate, highly intelligent, and can reduce the loss of tobacco during storage and aging. It is a high-selling technical solution worthy of promotion. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The preferred embodiments of the present invention will be further described in detail below with reference to the accompanying drawings, wherein:

[0022] Figure 1 is a schematic structural diagram of a tobacco curing system according to an embodiment of the present invention;

[0023] Figure 2 is a schematic structural diagram of a comprehensive monitoring system for a tobacco curing system according to an embodiment of the present invention;

[0024] Figure 3 is a schematic diagram of a tobacco atmosphere conditioning and curing system according to an embodiment of the present invention; and

[0025] Figure 4 The present invention is a flowchart of a tobacco atmosphere conditioning and curing method according to an embodiment of the present invention. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0027] In the following detailed description, reference may be made to the various specification drawings that are part of the present application and are used to illustrate specific embodiments of the present application. In the accompanying drawings, similar reference numerals describe substantially similar components in different figures. The various specific embodiments of the present application are described below in sufficient detail so that a person of ordinary skill in the art with relevant knowledge and skills in the art can implement the technical solutions of the present application. It should be understood that other embodiments may also be used or structural, logical or electrical changes may be made to the embodiments of the present application.

[0028] Figure 1 1 is a schematic diagram of the structure of a tobacco curing system according to an embodiment of the present invention. As shown in the figure, the tobacco curing system of this embodiment is applied to a tobacco curing warehouse 101. The tobacco curing system of this embodiment includes: a plurality of flexible airtight tents 102, a distributed pipe network 104, a comprehensive detection gas conditioning station 106, and an air source 103. The plurality of flexible airtight tents 102 are used to place stacked tobacco stacks. The air source 103 is used to provide high-purity nitrogen. The distributed pipe network 104 is connected to the air source 103. The comprehensive detection gas conditioning station 106 is used to detect the gas conditioning parameters in the plurality of flexible airtight tents 102, and can adjust the gas conditioning parameters in the flexible airtight tents 102 through the distributed pipe network 104. In some embodiments, the gas conditioning parameters include oxygen content, humidity or other parameters.

[0029] The flexible airtight tent 102 includes one or more flexible airtight layers. Optionally, the flexible airtight tent 102 may include an airtight door. The airtight door is disposed on the flexible airtight layer of the flexible airtight tent. The air change rate of the flexible airtight tent of the present invention is less than 0.05d -1 The preferred ventilation rate is less than 0.01d -1 (The volume of gas exchanged in one day in an airtight enclosure as a percentage of the total volume using the carbon dioxide or oxygen notation method). The flexible airtight layer includes but is not limited to airtight film materials such as PVC film and airtight cloth. The flexible airtight layer can be opaque or translucent. In order to facilitate observation of the interior of the tent, in some embodiments, transparent PVC film and other materials can also be used. In the case of selecting a non-transparent flexible airtight layer, an airtight observation window can be added or a transparent airtight door can be used. In some embodiments, the airtight door is a zipper door, a magnetic door, an adhesive door, etc., such as a soft door with a zipper, which plays a locking role after being tightened. In some embodiments, an exhaust port is provided on the flexible airtight layer at the top of the flexible airtight tent, and an air inlet is provided at the bottom of its side. As understood by those skilled in the art, the air inlet and exhaust hole of the flexible airtight tent 102 can include many other different settings.

[0030] In some embodiments, the flexible airtight tent can be made on site. First, the film cover is made according to the size of the stack. For example, the film cover is pre-made using a high barrier film. In the maintenance warehouse, a layer of flexible backing (such as a carton) is first laid on the tobacco stack, and the pre-made film cover is laid on the flexible backing. Then, the tobacco is placed and stacked to form a tobacco stack. The number of tobacco stacks can be set as needed, generally 100-200 boxes, about 20-40 tons; for high-bay cargo positions, tobacco can be stacked up to several thousand boxes, or even tens of thousands of boxes; at this time, it is better to use a high airtight warehouse. After the tobacco stacks are stacked, the flexible airtight tent is made on site using sealing equipment such as cutting, hot pressing, and end sealing. In some embodiments, the surface of the film cover has a pre-set exhaust port and air inlet. In some embodiments, the exhaust port can also be installed on the flexible airtight layer on the upper part of the flexible airtight tent on site, and the air inlet can be installed at the bottom of its side. Further, the exhaust port and the air inlet can be connected to the exhaust pipeline and the air inlet pipeline of the distributed pipe network near the stack.

[0031] In some embodiments, a temperature sensor may be provided in the flexible airtight tent, which transmits the temperature in the flexible airtight tent to the integrated monitoring and gas conditioning station in a wired or wireless manner, and then transmits it to the on-site operation platform and / or remote service platform via the integrated monitoring and gas conditioning station.

[0032] In some embodiments, a humidity sensor may be provided in the flexible airtight tent, which includes a probe that can be inserted into the tobacco stack to detect the humidity inside the tobacco stack. The tobacco humidity sensor sends the measured tobacco humidity to the integrated monitoring and gas conditioning station in a wired or wireless manner, and then sends it to the on-site operation platform and / or the remote service platform via the integrated monitoring and gas conditioning station.

[0033] A distributed pipe network 104 is provided in the maintenance warehouse 101. In one embodiment, the distributed pipe network is provided above the maintenance warehouse 101, and the height is higher than the height of the tobacco stack. It will neither affect the tobacco stack nor the vehicles entering and exiting the maintenance warehouse. In another embodiment, the distributed pipe network is provided in the maintenance warehouse 101 and is pre-buried under the ground of the maintenance warehouse. Near each predetermined tobacco stack position in the maintenance warehouse 101, the distributed pipe network 104 includes a reserved air intake pipeline and an exhaust pipeline.

[0034] In one embodiment, the distributed pipe network 104 arranged above the maintenance warehouse 101 includes a rigid gas supply pipeline 1041, which extends above each predetermined tobacco stack position in the maintenance warehouse 101. One end of the rigid gas supply pipeline 1041 is connected to the gas source 103. The rigid gas supply pipeline 1041 includes gas supply branches near each predetermined tobacco stack position. The end of the gas supply branch includes a gas supply end. The gas supply end can be connected to the air inlet of the flexible airtight tent through a flexible pipe. In some embodiments, manual valves are provided on each gas supply branch of the rigid gas supply pipeline 1041 to manually control the gas flow entering the multiple flexible airtight tents. Since the size of the tobacco stack may be different, the required gas flow is also different; while the gas supply branch is the same. The manual valve enables the user to adjust the gas flow entering the flexible airtight tent according to the size of the stack. It is not only conducive to accurately controlling the gas conditioning parameters in the flexible airtight tent, but also can effectively save energy. In some embodiments, the distributed pipe network includes a plurality of parallel rigid air supply pipelines 1041, which are used to provide nitrogen of different purity or humidity (for example, 90%, 99%, and 99.99% nitrogen are provided at the same time). A plurality of parallel rigid air supply pipelines can be connected to the air supply branch through solenoid valves, respectively, so as to provide nitrogen of different purity to the flexible airtight tent. Providing nitrogen of different purity is conducive to quickly reducing the oxygen in the flexible airtight tent by step oxygen reduction. In some embodiments, the distributed pipe network includes a plurality of humidifiers. The humidifier is connected to the rigid air supply pipeline through the air inlet pipeline and the air outlet pipeline and humidifies the gas flowing therethrough (for example, through a water tank). When humidified gas is required, the solenoid valves on the air inlet pipeline and the air outlet pipeline are opened, so that part of the gas in the rigid air supply pipeline flows through the humidifier, thereby obtaining gas with a certain humidity. Providing gas of different humidity is conducive to independently regulating the humidity in the airtight tent, and a plurality of parallel rigid air supply pipelines greatly improves the flexibility of air conditioning for different flexible airtight tents.

[0035] In some embodiments, the distributed pipe network 104 includes a rigid exhaust pipeline 1042. The rigid air supply pipeline 1041 is arranged roughly in parallel with the rigid exhaust pipeline 1042. The rigid exhaust pipeline 1042 also extends above each predetermined tobacco stack position in the maintenance warehouse 101. The end of the rigid exhaust pipeline 1041 is connected to the outside world. The rigid exhaust pipeline 1042 includes an air outlet branch near each predetermined tobacco stack position. One end of the air outlet branch is connected to the comprehensive monitoring gas conditioning station 106, and the comprehensive monitoring gas conditioning station is further connected to the rigid exhaust pipeline 1042. The other end of the air outlet branch includes an air outlet end. The air outlet end can be connected to the air outlet of the flexible airtight tent through a flexible pipeline. Of course, the air outlet branch can also be directly connected to the rigid exhaust pipeline 1042, and then connected to the comprehensive monitoring gas conditioning station 106 through a detection pipeline. In some embodiments, the detection pipeline can adopt a small-diameter pipeline.

[0036] In some embodiments, the rigid exhaust pipe 1042 is not necessary. Instead, a flexible pipe and an outlet branch from the outlet end of the flexible airtight tent 102 to the integrated monitoring and gas conditioning station 106 are necessary.

[0037] The flexible pipe between the air inlet end of the air supply branch and the air inlet of the flexible airtight tent and between the air outlet end of the air outlet branch and the air outlet of the flexible airtight tent has a certain margin. In this way, even if the positions of the air outlet and the air inlet of the flexible airtight tent are slightly different for different stacking positions, the airtight connection between the flexible airtight tent and the air supply branch and the air outlet branch can be ensured.

[0038] In some embodiments, a solenoid valve is provided at the connection between the rigid gas supply pipeline 1041 and the gas source 103. The solenoid valve can be controlled by the on-site operation platform or the remote service platform. When the gas source 103 starts to supply gas, opening the solenoid valve can provide high-purity (purity greater than 99.99%) nitrogen to one or more flexible airtight tents through the rigid gas supply pipeline.

[0039] In some embodiments, the gas supply branch includes a solenoid valve that can control the gas channel of the corresponding flexible airtight tent. Similarly, the gas outlet branch includes a solenoid valve that can control the gas channel between the corresponding flexible airtight tent and the corresponding comprehensive monitoring gas conditioning station. As shown in the figure, the same comprehensive monitoring gas conditioning station 106 can correspond to multiple airtight tents (generally 6-20). The comprehensive monitoring gas conditioning station 106 controls the solenoid valves on the gas supply branch and the gas outlet branch of the corresponding multiple flexible airtight tents, thereby controlling the gas supply and gas conditioning parameter monitoring of the corresponding flexible airtight tent. The introduction of the comprehensive monitoring gas conditioning station 106 can greatly reduce the construction cost of the tobacco gas conditioning maintenance system, and also provide a basis for low-cost and precise control of tobacco gas conditioning maintenance.

[0040] In some embodiments, the exhaust port and the air outlet of the flexible airtight tent are connected to the flexible pipe via quick-connect plugs.

[0041] In some embodiments, the gas source 103 includes one or more nitrogen generators configured to provide nitrogen of one or more purities and provide pressure to provide the nitrogen to the distributed pipeline. In some embodiments, multiple nitrogen generators of the gas source 103 can be distributed in different locations in the warehouse and can be controlled to start or shut down independently.

[0042] In some embodiments, the gas source 103 includes a movable gas source, such as a vehicle-mounted nitrogen generator or a nitrogen generator vehicle. The mobile gas source can be moved to a desired location in the warehouse and connected to a distributed pipe network to provide the required high-purity nitrogen. The mobile gas source is very helpful in reducing the investment cost of the tobacco curing system of the present invention.

[0043] Figure 2 1 is a schematic diagram of the structure of the comprehensive monitoring system of the tobacco curing system according to an embodiment of the present invention. As shown in the figure, the comprehensive monitoring gas conditioning station 106 includes a processor 201, a gas conditioning module 202, a detection module 203, a communication module 204 and an input and output module 205. The gas conditioning module 202 is electrically connected to the processor 201, and is configured to receive instructions from the processor 201 to control a plurality of solenoid valves on the gas supply branch and the gas outlet branch of the corresponding flexible airtight tent on the distributed pipe network connected thereto, so as to form one or more air inlet channels from the gas source 103 to one or more flexible airtight tents 102 for storing tobacco stacks, and one or more exhaust channels from one or more flexible airtight tents 102 to the comprehensive monitoring gas conditioning station 106, so as to adjust and / or maintain the oxygen content and / or humidity in one or more flexible airtight tents 102.

[0044] The detection module 203 is electrically connected to the processor 201 and is configured to communicate with one or more exhaust channels to receive gas from one or more flexible airtight tents 102 and detect gas conditioning parameters such as oxygen content and / or humidity of the gas.

[0045] The communication module 204 sends the atmosphere parameters such as oxygen content and / or humidity from the detection module 203 to the remote service platform or the on-site operation platform. On the other hand, the communication module 204 receives the control instruction from the remote service platform or the on-site operation platform and sends the control instruction to the processor 201. The processor 201 controls the atmosphere module 202 to adjust the atmosphere parameters in the specified flexible airtight tent.

[0046] The input-output module 205 includes a display for displaying the atmosphere parameters such as oxygen content and / or humidity from the detection module 203, so that the user can directly understand the atmosphere parameters in one or more flexible airtight tents managed by the comprehensive monitoring atmosphere station 106. On the other hand, the input-output module 205 includes an input device (such as a keyboard or a touch screen, etc.) for receiving instructions from the user and sending the user's instructions to the processor 201.

[0047] In some embodiments, the comprehensive monitoring gas conditioning station 106 is generally set on the distributed pipe network. It is convenient to control multiple solenoid valves on the gas supply branch and the gas outlet branch nearby, and it can also avoid possible damage caused by tobacco stacking operations and other ground operations. For example, the comprehensive monitoring gas conditioning station 106 is set above the maintenance warehouse.

[0048] However, the fact that the comprehensive monitoring gas conditioning station 106 is set far from the ground may bring a problem. It is inconvenient for users to view and use the input and output module 205. In some embodiments, the comprehensive monitoring gas conditioning station 106 includes a first shell and a second shell, and the processor 201, the gas conditioning module 202, the detection module 203 and the communication module 204 are arranged in the first shell; the input and output module 205 is arranged in the second shell; the first shell and the second shell are connected by wire. In this way, the first shell can be arranged on a distributed pipe network, such as above a maintenance warehouse; the second shell can be arranged in a convenient place, such as a wall or a pillar close to the ground. Similarly, the implementation method also includes: the detection module 203 is arranged in the first shell, and the processor 201, the gas conditioning module 202, the communication module 204, and the input and output module 205 are arranged in the second shell. It should be understood by those skilled in the art that there may be other discrete methods. These methods are also within the scope of the present invention.

[0049] In some embodiments, the processor 201 is configured to receive instructions from a remote service platform, an on-site operation platform or the input and output module 205 and control the opening and / or closing of one or more air inlet channels and / or exhaust channels for one or more flexible airtight tents through the atmosphere control module 102.

[0050] The gas conditioning module 202 controls the electromagnetic valves on the corresponding air supply branches of the multiple flexible airtight tents to form an air intake channel for one or more flexible airtight tents. In some embodiments, if the gas conditioning module 202 performs gas conditioning on multiple flexible airtight tents at the same time, the gas conditioning module 202 can form an exhaust channel between one of the multiple flexible airtight tents and the detection module 203 in a time-sharing manner. That is, the detection module 203 will first detect the gas conditioning parameters in one of the flexible airtight tents, and then turn to detect the gas conditioning parameters in another flexible airtight tent, until all the flexible airtight tents are traversed, and then return to the first flexible airtight tent. In this way, even if the gas conditioning parameters in each flexible airtight tent are different, the same comprehensive monitoring gas conditioning station can also achieve its own independent gas conditioning control. In other embodiments, if the gas conditioning parameters of multiple flexible airtight tents are the same or close, the gas conditioning module 202 can form an exhaust channel between all multiple flexible airtight tents and the detection module 203, until the gas conditioning parameters meet the standard, the gas conditioning operation is completed. That is to say, the detection module 203 will simultaneously detect the gas conditioning parameters after the gas mixture in all flexible airtight tents. In this way, the simultaneous adjustment of the air conditioning parameters in multiple flexible airtight tents can be achieved more efficiently.

[0051] In some embodiments, reference Figure 2, the detection module 203 is connected to the exhaust passage. The detection module 203 includes an air extraction port, an internal air circuit 2011, a fan 2012, an oxygen sensor 2013, and a humidity sensor 2014. The air extraction port is connected to the air inlet of the internal air circuit 2011, and the air outlet of the internal air circuit 2011 is provided with branches respectively connected to the oxygen sensor 2013 and the humidity sensor 2014, and the oxygen content and humidity of the gas from the flexible airtight tent are independently detected at the same time. After passing through the oxygen sensor 2013 and the humidity sensor 2014, the gas passes through the internal air circuit 2011 and then through the fan 2012 to be connected to the outside world. In the detection module 203, the independent detection of oxygen content and humidity does not interfere with each other, and a more accurate detection result can be obtained.

[0052] In some embodiments, in order to avoid the influence of the existing gas in the flexible channel and the air outlet pipeline on the accuracy of the detection result, it is necessary to calculate the time when the gas from the flexible airtight tent enters the detection module. According to the number of revolutions and air volume of the fan 2012, the volume of gas extracted by the detection module through the air extraction port per second is understood, and then the total volume of the gas in the two is calculated according to the length of the flexible channel and the length of the air outlet branch. Thus, the time when the gas in the flexible airtight tent enters the detection module can be calculated. Furthermore, the lengths of the flexible channels and air outlet branches of different flexible airtight tents are different, and the total volume of the gas in the two is also different, so the time when the gas enters is also different. In addition, in different modes, such as the adjustment of the gas conditioning parameters of a single and multiple flexible airtight tents, the time when the gas enters is also different. The detection module can pre-store the time when the gas enters the detection module in different flexible airtight tents and different modes, so as to provide more accurate detection results.

[0053] In some embodiments, the detection module 203 also receives temperature parameters from temperature sensors in the corresponding plurality of flexible airtight tents. The communication module 204 also sends the temperature parameters to the on-site operation platform or the remote service platform.

[0054] In some embodiments, the detection module 203 also includes a gas sensor data processing unit. The gas sensor data processing unit stores a database of standard samples of different alcoholization degrees. Specifically, a certain tobacco with different alcoholization processes is used as a standard sample, and the volatile gas generated by the standard sample is passed into the gas sensor data processing unit. A certain tobacco alcoholization degree of excellent alcoholization quality, good alcoholization quality, medium alcoholization quality, and poor alcoholization quality can be selected as a standard sample; then, the signal collected by the gas sensor is recorded and a corresponding relationship with the alcoholization quality is established. In some embodiments, the gas sensor data processing unit includes a gas filtration module with a successively decreasing pore size, which can separate gas molecules of different sizes based on the molecular sieve effect gradient, so as to perform spectral expansion of the gas response signal at the molecular size, and realize multi-component gas detection in a complex atmosphere.

[0055] Figure 3 Schematic diagram of a tobacco atmosphere conditioning system according to an embodiment of the present invention. As shown in the figure, multiple comprehensive monitoring atmosphere conditioning stations are data collection points in the system. The comprehensive monitoring atmosphere conditioning stations collect the respective atmosphere conditioning data from multiple flexible airtight tents under management, and send the atmosphere conditioning data to the on-site operation platform and / or the remote service platform respectively.

[0056] In some embodiments, the field operation platform includes a processor, a memory, a communication device, an input and output device, and a display, which is used to monitor and adjust the gas conditioning parameters in each flexible airtight tent on site in the maintenance warehouse. As understood, when there are multiple maintenance warehouses, the field operation platform corresponds to the comprehensive monitoring gas conditioning station in the multiple maintenance warehouses. The field operation platform uses a communication device to obtain and summarize the state of the gas conditioning parameters in all flexible airtight tents from each comprehensive monitoring gas conditioning station, and can display it to the field operator through a display. The field staff can also use the field operation platform to input instructions to adjust the gas conditioning parameters in one or more flexible airtight tents. The field operation platform forwards the input instructions to the designated comprehensive monitoring gas conditioning station. The comprehensive monitoring gas conditioning station controls the solenoid valves on the gas supply branch and the exhaust branch to open; the field operation platform controls the solenoid valves on the distributed pipeline network and the gas source to open, thereby forming a gas supply channel from the gas source to the designated one or more flexible airtight tents and an exhaust channel from the designated one or more flexible airtight tents to the corresponding comprehensive monitoring gas conditioning station. Air is supplied to the flexible airtight tent through an air supply channel and the air conditioning parameters in the flexible airtight tent are monitored through a comprehensive monitoring air conditioning station to achieve adjustment of the air conditioning parameters.

[0057] In some embodiments, the remote service platform includes a communication device and one or more servers for monitoring and adjusting the gas conditioning parameters in each flexible airtight tent on site in the maintenance warehouse. The remote service platform uses the communication device to communicate with each comprehensive monitoring gas conditioning station to obtain and summarize the state of the gas conditioning parameters in all flexible airtight tents. In some embodiments, the manager can log in to the remote service platform, view the gas conditioning parameters in each flexible airtight tent through the display interface, and input instructions for remote control. In some embodiments, the remote service platform includes a client, and the manager can view the gas conditioning parameters in each flexible airtight tent by logging in to the client. The manager can also use the client to input instructions and then adjust the gas conditioning parameters in one or more flexible airtight tents through the remote service platform. The remote service platform forwards the input instructions to the designated comprehensive monitoring gas conditioning station. The comprehensive monitoring gas conditioning station controls the solenoid valves on the gas supply branch and the exhaust branch to open. The remote service platform or its client can also communicate with the on-site operation platform to control the opening of the solenoid valves on the distributed pipe network and the gas source, thereby forming a gas supply channel from the gas source to the designated one or more flexible airtight tents and an exhaust channel from the designated one or more flexible airtight tents to the corresponding comprehensive monitoring gas conditioning station. Air is supplied to the flexible airtight tent through an air supply channel and the air conditioning parameters in the flexible airtight tent are monitored through a comprehensive monitoring air conditioning station to achieve adjustment of the air conditioning parameters.

[0058] In other embodiments, the client of the remote service platform can be used as the software for field operation, and the field operation platform adopts a simplified design. The field operation platform does not communicate with each other, but obtains instructions from the remote service platform to realize the control of the gas source and the solenoid valve on the distributed pipe network. For example, the manager logs in to the client of the remote service platform in the maintenance warehouse to view the gas conditioning parameters of multiple flexible airtight tents. According to the needs, the client issues an instruction to adjust the gas conditioning parameters in multiple flexible airtight tents. After receiving the instruction, the remote service platform sends the instruction to the field operation platform and the designated comprehensive monitoring gas conditioning station respectively. After receiving the instruction, the field operation platform controls the gas source to start working and opens the solenoid valves on the distributed pipe network and the gas source. The designated comprehensive monitoring gas conditioning station controls the solenoid valves on the gas supply branch and the exhaust branch of the designated flexible airtight tent to open, and starts to adjust the gas of the designated flexible airtight tent. At the same time, the detection module of the comprehensive monitoring gas conditioning station starts to detect the gas conditioning parameters from the designated flexible airtight tent. The comprehensive monitoring gas conditioning station sends the detected gas conditioning parameters to the remote service platform. The remote service platform sends the detected gas conditioning parameters to the on-site client. The management personnel can view the changes of the gas conditioning parameters in the flexible airtight tent in real time until the gas conditioning parameters in the designated flexible airtight tent reach the desired parameter values. The remote service platform sends instructions to the on-site operation platform and the designated comprehensive monitoring gas conditioning station to end the gas conditioning operation.

[0059] In some embodiments, the client of the remote monitoring platform of the tobacco atmosphere conditioning and maintenance system of the present invention can be installed on one or more of a desktop computer, a laptop computer, a smart phone, and a tablet computer. It can be used to remotely or on-site receive the atmosphere conditioning parameters such as oxygen content, humidity, and / or temperature of the gas in the flexible airtight tent reported by each comprehensive monitoring atmosphere conditioning station, and realize the query, analysis, and display of the oxygen content, humidity, and / or temperature of the gas in the flexible airtight tent; it can also accept the control of a predetermined program or user instruction to realize the adjustment of the atmosphere conditioning parameters in the flexible airtight tent.

[0060] In some embodiments, the integrated monitoring gas conditioning station can receive the gas conditioning parameter configuration of one or more flexible airtight tents from the on-site operation platform or the remote service platform. The detection module of the integrated monitoring gas conditioning station detects the gas from the corresponding multiple flexible airtight tents regularly or irregularly; the processor determines whether the detected gas conditioning parameters meet the gas conditioning parameter configuration. If it is found that it exceeds the range determined by the gas conditioning parameter configuration, the integrated detection gas conditioning station will issue an alarm to the on-site operation platform and / or the remote service platform. The on-site operation platform or the remote service platform responds and initiates the gas conditioning parameter adjustment operation.

[0061] In other embodiments, the comprehensive monitoring gas conditioning station can also be the initiator of the gas conditioning parameter adjustment operation. The detection module of the comprehensive monitoring gas conditioning station detects the gas from one or more flexible airtight tents regularly or irregularly; the processor determines whether the detected gas conditioning parameters meet the gas conditioning parameter configuration. If it is found that it exceeds the range determined by the gas conditioning parameter configuration, the comprehensive detection gas conditioning station actively initiates the gas conditioning parameter adjustment operation for the flexible airtight tent. In some embodiments, the comprehensive monitoring gas conditioning station communicates with the field operation platform. The field operation platform controls the solenoid valves on the gas source and the distributed pipeline network, and the comprehensive monitoring gas conditioning station controls the solenoid valves on the gas supply branch and the exhaust branch of the flexible airtight tent to form an air intake channel and an exhaust channel to implement gas conditioning parameter adjustment. In other embodiments, the comprehensive monitoring gas conditioning station directly controls the solenoid valves on the gas source and the distributed pipeline network, and can also actively implement the gas conditioning parameter adjustment operation. The advantage of this method is that it can minimize the components involved in decision-making and ensure that the gas conditioning parameters in the flexible airtight tent are always within the range of the gas conditioning parameter configuration.

[0062] Figure 4It is a flow chart of a tobacco atmosphere conditioning and curing method according to an embodiment of the present invention. As shown in the figure, the tobacco atmosphere conditioning and curing method comprises the following steps: in step S410, a flexible airtight tent is made on site to seal the tobacco stack, and the flexible airtight tent is connected to a distributed pipe network. The sealing method of the flexible airtight tent made on site in the embodiment has little effect on the operation of the tobacco stack, and the distributed pipe networks are all set at positions that do not affect the operation of the stack, and will not affect the efficiency of tobacco warehousing. Since the distributed pipe network and the comprehensive monitoring and atmosphere conditioning station are pre-set, they can support multiple flexible airtight tents at the same time. This makes the tobacco atmosphere conditioning and curing method of this embodiment very efficient as a whole.

[0063] In step S420, the tobacco stacks in the flexible airtight tent are subjected to oxygen reduction and insecticide / mold removal. In response to the insecticide / mold removal instructions of the on-site operation platform or the remote service platform, multiple gas channels are formed from the gas source through the distributed pipeline network to multiple flexible airtight tents; and multiple flexible airtight tents are subjected to oxygen reduction. In some embodiments, the oxygen content in the flexible airtight tent is reduced to 1%, 0.5%, or 0.2% to achieve the purpose of insecticide and mold removal. In some embodiments, a mold remover, such as chlorine dioxide, can also be released into the tobacco stacks in this step to better achieve the effect of removing mold.

[0064] In step S430, the air conditioning parameters in the flexible airtight tent are maintained for a time sufficient to achieve insecticide / mildew removal. After the flexible airtight tent is sealed, the tobacco stack is isolated from the outside world; filter plates are set on the air supply branch and the air outlet branch to filter insect eggs and mold spores. Therefore, insect eggs and mold existing in the outside world will no longer enter the flexible airtight tent. Every year, it is only necessary to reduce oxygen and replace the airtight tent, and after controlling the oxygen content at a low level for a period of time, the insecticide, insect control, mildew prevention and antibacterial effect can be achieved. This can not only greatly reduce the workload, but also improve the quality of tobacco.

[0065] In some embodiments, the insecticide / mold removal operation of step S430 uses a lower oxygen content than the prior art to achieve better insecticide / mold removal effects. In some embodiments, the oxygen content of insecticide / mold removal is less than 1%, and the time of insecticide / mold removal is 5-15 days (for example, when the oxygen content is 1%, the time of insecticide / mold removal is 15 days). Preferably, in some embodiments, the oxygen content of insecticide / mold removal is 0.5%, and the time of insecticide / mold removal is 10 days. More preferably, in some embodiments, the oxygen content of insecticide / mold removal is 0.2%, and the time of insecticide / mold removal is 5 days.

[0066] In some embodiments, during the insecticide / mildew removal process of step S430, a mildew remover, such as chlorine dioxide, may be applied to the plurality of flexible tents to assist in improving the mildew removal effect.

[0067] In the entire step S430, the integrated monitoring gas conditioning station regularly detects the oxygen content in the plurality of flexible airtight tents. If the oxygen content in the flexible airtight tent is higher than the set insecticide / mildew removal maximum oxygen content, the gas conditioning operation for the flexible airtight tent is started until the oxygen content in the flexible airtight tent reaches the set insecticide / mildew removal oxygen content.

[0068] In some embodiments, after the insecticide / mildew removal operation, the atmosphere conditioning operation for each flexible airtight tent is started to increase the oxygen content and control the humidity to reach the set aging atmosphere conditioning parameters to accelerate the aging of tobacco.

[0069] Since the tobacco aging time is relatively long, in some embodiments, the comprehensive monitoring gas conditioning station is used as the core equipment, and the comprehensive monitoring gas conditioning station is used to regularly detect the oxygen content and humidity in the corresponding flexible airtight tent. In response to the oxygen content and / or humidity in one or more flexible airtight tents exceeding the predetermined range; the comprehensive monitoring gas conditioning station sends a prompt to the on-site operation platform or the remote service platform to start the gas conditioning operation for these flexible airtight tents. Specifically, the on-site operation platform and the comprehensive monitoring gas conditioning station cooperate to start the gas source and open the distributed pipelines and the solenoid valves on the gas supply and outlet branches to form multiple gas channels from the gas source to these flexible airtight tents through the distributed pipeline network. The gas-conditioned high-purity nitrogen is introduced into the multiple flexible airtight tents and the gas in the multiple flexible airtight tents is discharged through the distributed pipeline network. The gas discharged from the multiple flexible airtight tents passes through the detection module of the comprehensive monitoring gas conditioning station. During the entire aging cycle, the gas conditioning parameters in the flexible airtight tents are maintained or adjusted. In response to the user's instruction to adjust the gas conditioning parameters or the oxygen content and / or humidity in the multiple flexible airtight tents exceeds the predetermined range; the comprehensive monitoring gas conditioning station controls the gas conditioning module to open the corresponding solenoid valve to form multiple gas channels from the gas source through the distributed pipeline network to the multiple flexible airtight tents, a gas channel from one of the multiple flexible airtight tents to the detection module, and multiple gas channels from the multiple flexible airtight tents to the detection module in a time-sharing manner; the gas-conditioned high-purity nitrogen is introduced into the multiple flexible airtight tents and the gas in the multiple flexible airtight tents is discharged through the distributed pipeline network, and the gas discharged from the multiple flexible airtight tents passes through the detection module of the comprehensive monitoring gas conditioning station to detect the oxygen content and humidity of the gas discharged from the multiple flexible airtight tents. When the detection module detects that the gas conditioning parameters in the flexible airtight tent meet the user's instructions or reach the predetermined range, the comprehensive monitoring gas conditioning station controls the gas conditioning module to close the corresponding solenoid valve.

[0070] The above embodiments are only used to illustrate the present invention, but not to limit the present invention. Ordinary technicians in the relevant technical field can make various changes and modifications without departing from the scope of the present invention. Therefore, all equivalent technical solutions should also fall within the scope of the present invention.

Claims

1. A tobacco atmosphere conditioning system, used in a tobacco curing warehouse, characterized in that: include: a plurality of flexible airtight tents configured to contain the stacked tobacco; A humidity sensor and a temperature sensor are arranged in the flexible airtight tent, and the humidity sensor includes a probe that can be inserted into the tobacco stack to detect the humidity inside the tobacco stack; Distributed pipe network; Multiple integrated monitoring and gas conditioning stations, and a gas source configured to provide high purity nitrogen; Wherein, the distributed pipe network includes an air-conditioning pipeline distributed above or underground in the tobacco curing warehouse and extending to the vicinity of the multiple flexible air-tight tents, the air-conditioning pipeline is connected to the air source, and the air-conditioning pipeline is provided with multiple air supply ends and air outlet ends near the multiple flexible air-tight tents, the air supply end is connected to the air inlet of the flexible air-tight tent through a flexible pipe, and the air outlet end is connected to the exhaust port of the flexible air-tight tent through a flexible pipe; The comprehensive monitoring gas conditioning station includes a processor, a gas conditioning module, a detection module, a communication module, and an input-output module; the processor is electrically connected to the gas conditioning module, the detection module and the input-output module; the gas conditioning module is connected to a plurality of solenoid valves on the gas conditioning pipeline, and adjusts and / or maintains the oxygen content and humidity in a plurality of nearby flexible air-tight tents by controlling the switches of the plurality of solenoid valves; the detection module is configured to detect the oxygen content and humidity of the gas in a plurality of nearby flexible air-tight tents; the communication module is configured to send the oxygen content and humidity of the gas in a plurality of nearby flexible air-tight tents from the detection module to a server; the input-output module is configured to display the oxygen content and humidity of the gas in a plurality of nearby flexible air-tight tents, and is capable of receiving instructions from a user and sending them to the processor; the processor is capable of responding to the user's instructions and controlling the gas conditioning module and / or the detection module to perform corresponding actions; The detection module includes an air suction port, an internal air path, a fan, an oxygen sensor, and a humidity sensor; the gas in the flexible airtight tent is transmitted to the oxygen sensor through the internal air path and then connected to the outside through the fan, and the oxygen content and humidity of the gas in the flexible airtight tent are independently detected at the same time; when performing gas detection in the flexible airtight tent, the detection module obtains the volume of gas extracted by the detection module through the air suction port according to the number of revolutions and air volume of the fan, and then calculates the total volume of gas in the two according to the length of the flexible channel and the length of the air outlet branch, thereby calculating the time when the gas in the flexible airtight tent enters the detection module; the detection module pre-stores the time when the gas enters the detection module in different flexible airtight tents and under different modes; The detection module also includes a gas sensor data processing unit, which includes a gas filtration module with successively decreasing pore sizes, and is used to separate gas molecules of different sizes based on the molecular sieve effect gradient; the volatile gas generated by tobacco with different alcoholization degrees is introduced into the gas sensor data processing unit, and the gas sensor data processing unit records the collected signals and establishes a corresponding relationship between the signals and the alcoholization quality.

2. The system according to claim 1, characterized in that The gas conditioning module of the integrated monitoring gas conditioning station is configured to control multiple solenoid valves on the gas conditioning pipeline to form a gas channel from one of the multiple nearby flexible airtight tents to the detection module; the integrated monitoring gas conditioning station is further configured to extract gas from the flexible airtight tent for detection.

3. The system according to claim 1, characterized in that The multiple flexible airtight tents are respectively provided with temperature sensors, and the temperature in the flexible airtight tents is sent to the comprehensive monitoring and gas conditioning station in a wired or wireless manner, and then sent to the server via the comprehensive monitoring and gas conditioning station.

4. The system according to claim 1, characterized in that In response to the oxygen content and / or humidity in the multiple flexible air-tight tents exceeding a predetermined range, the comprehensive monitoring gas-conditioning station is configured to open the corresponding solenoid valve by controlling the gas-conditioning module, thereby forming multiple gas channels from the gas source through the distributed pipeline network to the multiple flexible air-tight tents, so as to introduce gas-conditioned high-purity nitrogen into the multiple flexible air-tight tents and discharge the gas in the multiple flexible air-tight tents through the distributed pipeline network, and part of the gas discharged from the multiple flexible air-tight tents passes through the detection module of the comprehensive monitoring gas-conditioning station.

5. The system according to claim 4, characterized in that The comprehensive monitoring gas conditioning station is configured to control the gas conditioning module to open the corresponding solenoid valve, so as to form multiple gas channels from the multiple flexible airtight tents to the detection module in a time-sharing manner, so as to realize the oxygen content and / or humidity monitoring of the gas in the multiple flexible airtight tents.

6. The system according to claim 1, characterized in that In response to the temperature in one or more of the flexible airtight tents exceeding a predetermined range, the server is configured to instruct a zone temperature control facility to adjust the temperature of the area where the one or more flexible airtight tents are located.

7. The system according to claim 1, characterized in that The processor is configured to control the atmosphere-conditioning module to open the corresponding solenoid valve, thereby forming multiple gas channels from the gas source through the distributed pipeline network to the multiple flexible air-tight tents, so as to introduce atmosphere-conditioned high-purity nitrogen into the multiple flexible air-tight tents and keep the oxygen content in the multiple flexible air-tight tents below 1%, thereby achieving insecticide maintenance for the tobacco in the multiple flexible air-tight tents.

8. The system according to claim 1, characterized in that The system also includes a remote monitoring platform running on the server, which is used to receive the oxygen content, humidity and / or temperature of the gas in the flexible airtight tent reported by the comprehensive monitoring gas conditioning station, and to query, analyze and display the oxygen content, humidity and / or temperature of the gas in the flexible airtight tent.

9. The system according to claim 1, characterized in that The exhaust port and the air outlet of the flexible airtight tent are connected to the flexible pipe through quick-connect plugs.

10. The system according to claim 1, characterized in that A manual regulating valve is provided on the pipeline connecting the multiple flexible airtight tents and the air source, so as to control the gas flow entering the multiple flexible airtight tents.

11. A tobacco atmosphere conditioning and curing method, characterized in that: Applied to the tobacco atmosphere conditioning and curing system according to any one of claims 1 to 10, the method comprising: In response to the oxygen content and / or humidity in the multiple flexible air-tight tents storing tobacco stacks exceeding a predetermined range, the atmosphere-conditioning module is controlled to open the corresponding solenoid valves to form multiple gas channels from the gas source through the distributed pipeline network to the multiple flexible air-tight tents, so as to introduce atmosphere-conditioned high-purity nitrogen into the multiple flexible air-tight tents and discharge the gas in the multiple flexible air-tight tents through the distributed pipeline network, and part of the gas discharged from the multiple flexible air-tight tents passes through the detection module of the comprehensive monitoring atmosphere-conditioning station.

12. The method according to claim 11, characterized in that In response to the temperature in one or more of the flexible airtight tents exceeding a predetermined range, the zone temperature control facility is instructed to control the temperature of the area where the one or more flexible airtight tents are located.

13. The method according to claim 11, characterized in that By controlling the gas conditioning module to open the corresponding solenoid valve, a plurality of gas channels are formed from the gas source through the distributed pipeline network to the plurality of flexible air-tight tents, so as to introduce gas-conditioned high-purity nitrogen into the plurality of flexible air-tight tents and keep the oxygen content in the plurality of flexible air-tight tents below 1%, thereby achieving insecticide maintenance for the tobacco in the plurality of flexible air-tight tents.

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