System for improving temperature and humidity uniformity between tobacco strip bins and control method thereof

Abstract

The invention discloses a system for improving temperature and humidity uniformity between tobacco strip bins and a control method thereof, and relates to the technical field of tobacco strip curing alcoholization, a plurality of tobacco stacks are stacked in the tobacco strip bin, a wall side roadway is formed between each tobacco stack stacked close to a wall body of the tobacco strip bin and the wall body, and a dehumidification chimney is arranged in the wall side roadway and corresponds to each tobacco stack; an inlet and an outlet of the dehumidification chimney are located at the bottom of the tobacco stack and the top in the tobacco strip bin respectively. Based on the objective condition that the temperature and humidity of the wall corner area in the tobacco lamina bin are large, natural airflow is formed under the effect of the temperature difference between the wall corner area and the top in the tobacco lamina bin; and the work of the cooling and dehumidifying equipment and each thermal power section is controlled according to the temperature and humidity between the bins in the flue-cured tobacco strip bin, the temperature and humidity of the wall corner area and the temperature of the top end in the dehumidifying chimney, so that cooling and dehumidifying of the wall corner area in the flue-cured tobacco strip bin are realized, the vertical space of the bin is fully utilized, the air flow direction is increased, and the uniformity of the temperature and humidity between the bins is improved.

Description

Technical Field

[0001] The invention relates to the technical field of tobacco strip curing and aging, and in particular to a system for improving the uniformity of temperature and humidity between tobacco strip bins and a control method thereof. Background Art

[0002] In order to ensure the storage safety and aging quality of tobacco leaves, tobacco barns are usually equipped with cooling and dehumidification equipment such as cooling dehumidifiers or air conditioners to control the temperature and humidity of the barn environment. However, in actual production, under high temperature and high humidity conditions, some accidental events (such as carbonization of tobacco leaves and rainwater leakage) will still cause significant local temperature rise or humidity in the barn. At the same time, affected by the thermal bridge effect of the building structure between tobacco barns, the corner area between the tobacco stack and the wall (spacing ≤0.5m) is prone to form a relatively hot and humid area due to air stagnation, so accidental events often occur at the bottom of the tobacco stack near the corner of the wall.

[0003] At present, forced ventilation is usually used in production to promote the uniformity of temperature and humidity in smoke storage places.

[0004] Through prior art search, there are the following known technical solutions: Prior art 1: A temperature and humidity uniformity adjustment system Application number: CN202011611457.8, application date: 2020.12.30, publication (announcement) date: 2021.05.11.

[0005] Prior art 1 relates to a temperature and humidity uniformity adjustment system, including: an airtight enclosure; a static pressure box, fixedly hoisted in the airtight enclosure, the static pressure box realizes gas communication between the inside and outside of the static pressure box through the top and bottom; and at least one fan or blower, arranged on the top of the static pressure box, configured to circulate the gas inside and outside the static pressure box after being turned on, so as to promote the uniformity of temperature and humidity at different positions in the airtight enclosure. At the same time, combined with a heating device and a humidity control device, the temperature and humidity of the warehouse can be accurately and uniformly regulated, which can reduce the temperature and humidity fluctuations of the storage space, and is conducive to the stable storage of cultural relics, books, Chinese medicinal materials, tobacco, etc.

[0006] Prior art 2: An air conditioning system for improving the uniformity of temperature and humidity in a high-bay warehouse in a cigarette factory Application number: CN201310091758.6, application date: 2013.03.21, publication (announcement) date: 2013.06.05.

[0007] The prior art 2 relates to an air conditioning air supply system for improving the temperature and humidity uniformity in the elevated warehouse of a cigarette factory. The system includes an air compression device, an air supply system, and a return air system. The air supply system includes an upper air supply pipeline, swirl air outlets, jet air outlets, a lower air supply pipeline, and double-layer louver air outlets. The upper air supply pipeline is connected to the air outlet of the air compression device. The swirl air outlets and jet air outlets are distributed on the upper air supply pipeline. The lower air supply pipeline is connected to the air compression device. The double-layer louver air outlets are arranged on the lower air supply pipeline. The return air system includes a return air pipeline and single-layer louver air outlets. The single-layer louver air outlets are distributed on the return air pipeline. The return air pipeline is connected to the air return port of the air compression device. The present invention can achieve the purpose of making the temperature and humidity in the warehouse meet the design requirements and the temperature and humidity uniformity between the upper and lower layers of the storage area. On this basis, the number of warehouse air change times is reduced, and the air supply energy consumption of the air conditioner is lowered.

[0008] Although the prior art 1 and the prior art 2 can improve the temperature and humidity uniformity in the cut tobacco storage room, they also have the following defects at the same time: First, power equipment such as a fan or an air compressor needs to be set up, and the energy demand is large. Second, a large number of ventilation pipes need to be arranged on the warehouse floor plan, which has a great impact on the daily operations of the warehouse. Third, although the air flow in the horizontal plane of the storage room is strengthened, the utilization rate of the vertical space is small.

[0009] Through the above retrieval, it is found that the above technical solutions do not affect the novelty of the present invention; and the mutual combination of the above prior arts does not destroy the creativity of the present invention. Summary of the Invention

[0010] The present invention precisely aims to avoid the deficiencies existing in the above prior arts, and provides a system for improving the temperature and humidity uniformity in the cut tobacco storage room and its control method.

[0011] The present invention adopts the following technical solutions to solve the technical problems: A system for improving the temperature and humidity uniformity in the cut tobacco storage room, where multiple stacks of tobacco stacks are palletized in the cut tobacco warehouse. Between each of the tobacco stacks palletized close to the wall of the cut tobacco warehouse and the wall, a side wall lane is formed, and multiple dehumidifying chimneys are provided. In the side wall lane, a dehumidifying chimney is respectively configured corresponding to each tobacco stack. During actual setting, if the tobacco stacks close to the wall on one side only form a side wall lane on one side, then one dehumidifying chimney is configured in the corresponding side wall lane on that side. When the tobacco stacks are palletized at the corner of the cut tobacco warehouse, the two sides adjacent to the tobacco stacks are both against the wall, and side wall lanes are formed on both sides. Then, one dehumidifying chimney should be configured in each side wall lane, that is, the dehumidifying chimneys are configured at both corners of the tobacco stack. The inlet and outlet of the dehumidifying chimney are respectively located at the bottom of the tobacco stack and the top inside the cut tobacco bin, guiding the airflow at the bottom of the tobacco stack to flow through the dehumidifying chimney to the top inside the cut tobacco bin.

[0012] Due to the aging effect of tobacco leaves, the humidity at the bottom of the tobacco stack is relatively high and the temperature is relatively high, resulting in a temperature difference between the bottom and the top of the dehumidifying chimney. Under the guidance of the dehumidifying chimney, an upward airflow is naturally formed to discharge the moisture accumulated at the bottom of the tobacco stack, preventing the tobacco leaves at the bottom of the tobacco stack from mildewing and carbonizing.

[0013] Further, the dehumidifying chimney includes a guiding section, a thermodynamic section and a main body section which are connected in sequence from bottom to top; The inlet of the guiding section serves as the inlet of the dehumidifying chimney, and the opening faces the flowing direction of the cooling and dehumidifying airflow; the thermodynamic section is a heating jacket with a tubular structure, and the main body section is in a tubular structure, and its outlet serves as the outlet of the dehumidifying chimney and is located at the top inside the cut tobacco bin.

[0014] The thermodynamic section is used to heat the area at the bottom of the tobacco stack to increase the temperature difference between the bottom and the top of the dehumidifying chimney, promote the flow of the upward airflow in the dehumidifying chimney, and accelerate the moisture discharge rate.

[0015] Further, a PID temperature control system is built in the thermodynamic section.

[0016] Further, it also includes a top thermometer, a cooling and dehumidifying device, a corner temperature and humidity meter and a warehouse temperature and humidity meter; The cooling and dehumidifying device and the warehouse temperature and humidity meter are arranged inside the cut tobacco bin. A cooling and dehumidifying airflow is formed inside the cut tobacco bin under the action of the cooling and dehumidifying device, and the top thermometer is arranged at the top inside the main body section; The dehumidifying chimney is arranged at the turning position on the leeward side of the corresponding tobacco stack in the cooling and dehumidifying airflow; the corner temperature and humidity meter is arranged corresponding to the dehumidifying chimney, and the corner temperature and humidity meter is arranged at the middle bottom end of the corresponding wall-side roadway.

[0017] In actual setting, the installation height of the warehouse temperature and humidity meter from the ground plane is preferably 1.6 m to 1.8 m. Further, the cooling and dehumidifying devices are arranged symmetrically and away from each other on the midline in the length direction of the cut tobacco bin, and the dry air output port is located at its own top, and the dry air output direction is inclined upward along the midline in the length direction of the cut tobacco bin.

[0018] Further, an operation plane penetrating the cut tobacco bin is arranged in the middle of the cut tobacco bin, and a stack roadway is formed between adjacent stacks; the bin-interior temperature and humidity meter is arranged at the intersection of the operation plane and the stack roadway and is located in the middle in the up-down direction of the cut tobacco bin.

[0019] The number of the bin-interior temperature and humidity meters to be arranged shall be adjusted accordingly according to the area of the cut tobacco bin. Preferably, one bin-interior temperature and humidity meter is arranged for every 500 m 2 , and multiple bin-interior temperature and humidity meters are preferably arranged in the cut tobacco bin in a uniformly distributed manner.

[0020] Further, the heat power section and the main body section are in a circular tube structure, and the guiding section is in an arc-shaped plate structure, and the concave surface of the guiding section faces the flowing direction of the cooling and dehumidifying air flow.

[0021] A control method for improving the temperature and humidity uniformity in a cut tobacco bin uses the above system for improving the temperature and humidity uniformity in a cut tobacco bin to control the temperature and humidity uniformity in the cut tobacco bin, and includes the following processes: In the first step, the ambient temperature measured by the corner temperature and humidity meter in real time is T 底 , the relative humidity is RH 底 , the ambient temperature measured by the top thermometer in real time is T 顶 , the ambient temperature measured by the bin-interior temperature and humidity meter in real time is T 仓 , and the relative humidity is RH 仓 : If each T 底 and each T 仓 are all < T 0 , and each RH 底 and each RH 仓 are all < RH 0 , at this time, the environment is in a low-temperature and low-humidity state, and accidental events (such as tobacco leaf carbonization) in a high-temperature and high-humidity environment will not occur. Then, each heat power section and the cooling and dehumidifying equipment all enter or maintain the shutdown state, and the first step is cycled until the system for improving the temperature and humidity uniformity in the cut tobacco bin shuts down; Otherwise, go to the second step; Among them, T 0 is the preset allowable ambient temperature, and RH 0 is the preset allowable relative humidity; In the second step, if there is any T 仓 ≥T 0 and / or any RH 仓 ≥RH 0 , or there is any RH 底 ≥RH 0, at this time, the overall environment in the bin is in a high-temperature and / or high-humidity state, or partially in a high-humidity state. Start the cooling and dehumidification equipment to quickly achieve cooling and / or dehumidification of the bin environment; continuously monitor the T measured by each top thermometer. 顶 Until each T 顶 Remains stable, and proceed to the third step; Otherwise, proceed to the fourth step; Third step, approve and update the marking status of each ΔT1 and RH 底 Of the markings; Subsequently, judge the value of each T 底 Satisfying T 底 ≥T 0 Of T 底 Corresponding ΔT 1 Markings, judge the value of each RH 底 Satisfying RH 底 ≥RH 0 Of RH 底 Markings; Judge the marking status of ΔT 1 And RH 底 Of the markings: If there is any marked ΔT 1 And / or there is a marked RH 底 , then proceed to the fifth step, and repeat the third step before the end of the fifth step; At this time, there are local high-temperature and / or local high-humidity areas in the cut tobacco bin. Since it takes a certain amount of time to cool and / or dehumidify the local area, before the temperature and / or humidity in the local area drop to the normal temperature and / or humidity, new changes may still occur in the environmental temperature and relative humidity of the bin and each area inside the bin. Therefore, since the cooling and dehumidification equipment has been started, only the ΔT 1 And / or RH 底 Corresponding to the newly emerged local high-temperature and / or local high-humidity areas need to be marked; Otherwise, turn off the cooling and dehumidification equipment and proceed to the first step; Among them, ΔT 1 Is the difference between a corresponding set of T 底 And T 顶 ; Fourth step, approve and update the marking status of each ΔT 1 Of the markings; Subsequently, judge the value of each T 底 Satisfying T 底 ≥T 0 Of T 底 Corresponding ΔT 1 Markings, and judge the marking status of ΔT 1 Of the markings: If there is any marked ΔT1 , perform the fifth step and repeat the first step before the end of the fifth step; At this time, there are local high-temperature areas in the cut tobacco bin. Since it takes a certain amount of time for the local areas to cool down, before the temperature of the local areas drops to the normal temperature, new changes may still occur in the ambient temperature and relative humidity of the bin and each area inside the bin. Therefore, the ambient temperature and relative humidity of the bin and each area inside the bin should be continuously monitored to timely control the start of the cooling and dehumidification equipment and timely mark the ΔT corresponding to the newly emerged local high-temperature area 1 for marking; Otherwise, perform the first step; Fifth step, continuously approve and update each ΔT 1 and RH 底 marking situation: If there is a marked RH 底 , immediately start the corresponding heat power section of the marked RH 底 , then dynamically adjust the heating temperature T of this heat power section 热 , keep ΔT 2 > 5°C, Utilize the air flow formed under the temperature difference ΔT between T 热 and T 顶 to further cool and dehumidify the local area; 2 Until the T corresponding to this RH < T 底 , RH 底 < RH 0 , each T 底 < T 0 , each RH 仓 < RH 0 , and ΔT 仓 < RH 0 , and ΔT 3 ≤ 2°C, ΔRH ≤ 2%, turn off this heat power section and cancel the mark of this RH 底 , and repeat the fifth step; If there is no marked RH 底 , and there is a marked ΔT 1 , then continuously monitor the value of the marked ΔT 1 , and immediately start the corresponding heat power section of the marked ΔT when any ΔT 1 satisfies ΔT 1 < 5°C, then dynamically adjust the heating temperature T of the heat power section 1 , keep ΔT 热 > 5°C, utilize the temperature difference ΔT between T 2 and T 热 to perform further cooling and dehumidification in the local area 顶 , and the temperature difference ΔT 2Further cool a local area of the air flow formed under the action. until this ΔT 1 corresponding T 底 <T 0 , RH 底 <RH 0 each T 仓 is <T 0 each RH 仓 is <RH 0 , and ΔT 3 ≤2°C, ΔRH≤2%, close this thermal power section and cancel the marking of this ΔT 1 and repeat the fifth step; Otherwise, turn off the cooling and dehumidifying equipment or maintain the shutdown state of the cooling and dehumidifying equipment, end the fifth step, and proceed to the first step; wherein, ΔT 2 is the difference between a corresponding group of T 热 and T 顶 , ΔT 3 is the largest one among the differences between a certain T 底 and each T 仓 , ΔRH is the largest one among the differences between a certain RH 底 and each RH 仓 .

[0022] Furthermore, 30°C ≤ T 0 ≤ 32°C, 60% ≤ RH 0 ≤ 65%, 35°C ≤ T 热 ≤ 40°C.

[0023] The present invention provides a system and its control method for improving the temperature and humidity uniformity in a cut tobacco warehouse, having the following beneficial effects: 1. Based on the objective condition that the temperature and humidity in the corner area of the inner wall of the cut tobacco warehouse are relatively high, the present invention utilizes the natural air flow formed under the temperature difference between the corner area of the inner wall and the top of the cut tobacco warehouse to realize the cooling and dehumidification of the corner area of the inner wall of the cut tobacco warehouse, makes full use of the vertical space of the warehouse, increases the air flow direction, and improves the temperature and humidity uniformity in the warehouse.

[0024] 2. The thermal power section of the dehumidification chimney of the present invention can increase the temperature difference between the bottom and the top in the dehumidification chimney by locally heating and raising the temperature inside the dehumidification chimney, promoting the upward discharge of the air flow through the bottom of the dehumidification chimney, and further improving the cooling and dehumidification effect in the corner area of the inner wall of the cut tobacco warehouse.

[0025] 3. The control method provided by the present invention controls the operation of the cooling and dehumidifying equipment and each thermal power section according to the temperature and humidity in the bin, the temperature and humidity in the wall corner area, and the temperature at the top of the dehumidifying chimney. It can reasonably control the uniformity of the temperature and humidity in the bin according to different situations of the temperature and humidity in the bin, ensuring the safe storage of tobacco leaves.

[0026] 4. The present invention is easy to be implemented by transformation on the existing production site, without the need for external power equipment investment, and basically does not affect production operations. It can effectively solve the problems of uneven temperature and humidity distribution in the cut tobacco bin and the easy exceeding of the temperature and humidity standards in the wall corner area of the bin during high-temperature and high-humidity seasons, and has good technical economy and environmental friendliness. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 is a schematic structural diagram of the present invention; Figure 2 is a schematic structural diagram of the dehumidifying chimney of the present invention; Figure 3 is a flowchart of the control method of the present invention.

[0028] In the figure: Reference numerals: 1, wall; 2, dehumidifying chimney, 2-1, guiding section, 2-2, thermal power section, 2-3, main body section; 2-4, top thermometer; 3, tobacco stack; 5, cooling and dehumidifying equipment; 6, corner temperature and humidity meter; 7, bin temperature and humidity meter; a, side wall roadway; b, tobacco stack roadway; c, operation plane. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0029] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the embodiments of the present invention. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0030] A system for improving the uniformity of temperature and humidity in a cut tobacco bin, as Figure 1 shown, its structural relationship is as follows: Twelve tobacco stacks 3 are evenly stacked in a 6*2 form in a rectangular cut tobacco bin, and two cooling and dehumidifying devices 5 with a dehumidifying capacity of 50 kg / h are provided. The two cooling and dehumidifying devices 5 are arranged back to back and symmetrically on the center line in the length direction of the cut tobacco bin. Their dry air output ports are located at their own tops, and the dry air output direction is inclined upward along the center line in the length direction of the cut tobacco bin, with an angle of 15° with the horizontal direction; A cooling and dehumidifying air flow is formed in the cut tobacco bin under the action of the cooling and dehumidifying device 5. For the flow direction of the cooling and dehumidifying air flow, see Figure 1 .

[0031] In the middle part of the cut tobacco bin along the length direction of the rectangle, an operation plane c running through the cut tobacco bin is arranged, and a cut tobacco stack roadway b is formed between adjacent cut tobacco stacks 3; two inter-bin temperature and humidity sensors 7 are respectively arranged at the intersection positions of the operation plane c and the two cut tobacco stack roadways b located on the midline in the length direction of the cut tobacco bin, and the installation height is 1.6 m from the ground plane.

[0032] Among the 12 cut tobacco stacks, 4 are located at the corner positions of the rectangle. A wall-side roadway a is formed between each of these 4 cut tobacco stacks 3 and the side walls 1 on both sides, and a dehumidifying chimney 2 is respectively arranged at the edge turning positions of these 4 cut tobacco stacks 3 in the downwind direction of the cooling and dehumidifying air flow in the corresponding wall-side roadways a on both sides; for the remaining 8 cut tobacco stacks 3, a wall-side roadway a is formed only on one side between them and the wall 1, and a dehumidifying chimney 2 is arranged at the edge turning position of these 8 cut tobacco stacks 3 in the downwind direction of the cooling and dehumidifying air flow in the corresponding wall-side roadway a on this side. A total of 16 dehumidifying chimneys 2 are arranged.

[0033] The dehumidifying chimney 2 includes a guiding section 2-1, a thermo-dynamic section 2-2, and a main body section 2-3 which are connected in sequence from bottom to top. A wireless top thermometer 2-4 is arranged at the top inside the main body section 2-3. The total length of the dehumidifying chimney 2 is 3.4 m, the vertical distance from the bottom to the ground plane of the bin is 5 cm, and the vertical distance from the top to the ceiling of the bin is 10 cm. The guiding section 2-1 is in the shape of an arc-shaped plate structure, with the concave surface facing the flow direction of the cooling and dehumidifying air flow, and the vertical height is 20 cm; the thermo-dynamic section 2-2 is a heating jacket with a circular tubular structure with a built-in PID temperature control system, the axial height is 30 cm, and the set working temperature range is 35°C - 40°C; the main body section 2-3 is in a tubular structure, with an inner diameter of 10 cm, and is made of aluminum or stainless steel with a thermal conductivity ≥ 200 W / (m·K).

[0034] The corner temperature and humidity sensors 6 are arranged in one-to-one correspondence with the dehumidifying chimneys 2, and a total of 16 are arranged. The corner temperature and humidity sensors 6 are arranged in the middle of the corresponding wall-side roadways a, and the installation height is 20 cm from the ground plane.

[0035] Example 1 Using the above system for improving the temperature and humidity uniformity in the cut tobacco bin to control the temperature and humidity uniformity in the cut tobacco bin, take T 0 = 32°C, RH 0 = 65%: First step, the corner temperature and humidity sensors 6 measure the ambient temperature as T 底 , the relative humidity RH 底 in real time, the top thermometer 2-4 measures the ambient temperature T 顶 in real time, and the inter-bin temperature and humidity sensors 7 measure the ambient temperature T 仓 , the relative humidity RH 仓 in real time; Second step, during the daily storage and maintenance process of the cut tobacco bin, Figure 1The temperature and humidity of the corner thermometer 6 marked at α corresponds to T 底 = 31.5 °C, RH 底 = 72.4%, and the remaining T 底 ∈ [30.6 °C, 31.9 °C], RH 底 ∈ [62.4%, 64.1%], T 仓 ∈ [29.8 °C, 31.1 °C], RH 仓 ∈ [61.3%, 62.0%]; At this time, there is RH 底 ≥ RH 0 , then there is a situation of high humidity in the local area at α, and it is possible that external water vapor seeps in. Start the cooling and dehumidification equipment 5, and set the target relative humidity of the cooling and dehumidification equipment 5 to 60%; Continuously monitor the T measured by each top thermometer 2 - 4 顶 until each T 顶 remains stable, T 顶 ∈ [28.1 °C, 29.0 °C], and proceed to the third step; Third step, verify and update the marking status of each ΔT1 and RH 底 and judge the value of each T 底 . At this time, the T at α 底 is 30.9 °C, and the remaining T 底 are all < 32 °C, so there is no need to mark ΔT1; judge the value of each RH 底 . At this time, the RH at α 底 = 70.6%, satisfying RH 底 ≥ RH 0 , and the remaining RH 底 are all < 65%, mark the RH at α 底 ; Judge the marking status of ΔT 1 and RH 底 : If the RH at α 底 is marked, proceed to the fifth step, and repeat the third step before the end of the fifth step; Fifth step, continuously verify and update the marking status of each ΔT 1 and RH 底 until the end of the fifth step. During this process, repeat the third step, and there are no newly marked ΔT 1 and RH 底 ; If the RH at α 底 is marked, start the thermodynamic section 2 - 2 in the dehumidification chimney 2 corresponding to α. At this time, the T at α 顶 = 28.4 °C, let T 热 = 35 °C, and dynamically adjust the heating temperature T of this thermodynamic section 2 - 2热 , maintain ΔT 2 > 5 °C; After two hours, the T corresponding to α 底 = 29.4 °C, RH 底 = 61.4%, each T 仓 ∈ [28.7 °C, 29.6 °C], each RH 仓 ∈ [60.9%, 61.1%], for each T except at α 底 ∈ [29.6 °C, 30.4 °C], for each RH except at α 底 ∈ [60.5%, 62.1%], satisfying T 底 < T 0 、RH 底 < RH 0 、each T 仓 is < T 0 、each RH 仓 is < RH 0 , and ΔT 3 ≤ 2 °C, ΔRH ≤ 2%, close the thermo - dynamic section 2 - 2 corresponding to α, cancel the marking of RH at α 底 , repeat step five; For the second time in step five, continuously verify and update the marking conditions of each ΔT 1 and RH 底 : At this time, there is no marked ΔT 1 and RH 底 , turn off the cooling and dehumidification equipment 5, end step five, proceed to step one, and enter the daily storage and maintenance state of the cut - tobacco warehouse.

[0036] Example 2 Use the above - mentioned system for improving the temperature and humidity uniformity in the cut - tobacco warehouse to control the temperature and humidity uniformity in the cut - tobacco warehouse. Take T 0 = 32 °C, RH 0 = 65%: Step one, the corner thermometer 6 measures the ambient temperature as T 底 , the relative humidity RH 底 , the top thermometer 2 - 4 measures the ambient temperature T 顶 , the warehouse thermometer 7 measures the ambient temperature T 仓 , the relative humidity RH 仓 ; Step two, during the daily storage and maintenance of the cut - tobacco warehouse in the high - temperature and high - humidity season, each T 仓 ∈ [33.4 °C, 34.2 °C], each RH 仓 ∈ [67.5%, 72.1%], each T 底 ∈ [34.5 °C, 36.7 °C], each RH底 ∈[70.3%, 74.2%], satisfying that there exists any T 仓 ≥T 0 and any RH 仓 ≥RH 0 , and at the same time satisfying that there exists any RH 底 ≥RH 0 , start the cooling and dehumidifying device 5, and set the target relative humidity of the cooling and dehumidifying device 5 to 55%; Continuously monitor the T measured by each top thermometer 2 - 4 顶 , until two hours later, each T 顶 remains stable; at this time, T 顶 ∈[29.1°C, 30.2°C], T 底 ∈[33.3°C, 35.2°C], RH 底 ∈[66.5%, 67.4%], T 仓 ∈[30.2°C, 30.9°C], RH 仓 ∈[58.4%, 60.4%], proceed to the third step; The third step, verify and update the marking status of each ΔT1 and RH 底 ; Subsequently, judge the value of each T 底 , at this time, T 底 ∈[33.3°C, 35.2°C], each T 底 all satisfy T 底 ≥T 0 , mark all ΔT 1 ; judge the value of each RH 底 , at this time, RH 底 ∈[66.5%, 67.4%], each RH 底 all satisfy RH 底 ≥RH 0 , mark all RH 底 ; Judge the marking status of ΔT 1 and RH 底 : There exist marked ΔT 1 and RH 底 , proceed to the fifth step, and repeat the third step before the end of the fifth step; The fifth step, continuously verify and update the marking status of each ΔT 1 and RH 底 until the end of the fifth step. During this process, repeat the third step, and there are no newly marked ΔT 1 and RH 底 ; Each RH 底All are marked, and each thermal power section 2-2 is started. At this time, T 顶 ∈[29.1 °C, 30.2 °C]. Let each T 热 = 40 °C, then ΔT 2 ∈[9.9 °C, 10.8 °C]. Dynamically adjust the heating temperature T 热 of each thermal power section 2-2 to keep each ΔT 2 > 5 °C; Until the RH 底 corresponding to a certain place, the corresponding T 底 < T 0 、RH 底 < RH 0 、each T 仓 is < T 0 、each RH 仓 is < RH 0 , and ΔT 3 ≤ 2 °C, ΔRH ≤ 2%. Turn off the thermal power section 2-2 at this place and cancel the marking of RH 底 at this place, and repeat the fifth step; …… The last time to perform the fifth step, continuously verify and update the marking situations of each ΔT 1 and RH 底 : At this time, there is no marked ΔT 1 and RH 底 . Turn off the cooling and dehumidification equipment 5, end the fifth step, perform the first step, and enter the daily storage and maintenance state of the cut tobacco warehouse.

[0037] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "comprising a..." does not exclude the existence of additional identical elements in the process, method, article or device comprising the element.

[0038] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A system for improving the uniformity of temperature and humidity between tobacco strip warehouses, wherein a plurality of tobacco strip warehouse stacks (3) are stacked in the tobacco strip warehouse, and a wall lane (a) is formed between each of the tobacco strip warehouse stacks (3) and the wall (1), characterized in that: A plurality of dehumidification chimneys (2) are provided; In the wall-side tunnel (a), a dehumidification chimney (5) is provided corresponding to each of the chimney stacks (3); The inlet and outlet of the dehumidification chimney (2) are respectively located at the bottom of the smoke stack (3) and the top of the smoke bunker, guiding the airflow located at the bottom of the smoke stack (3) to flow to the top of the smoke bunker via the dehumidification chimney (2).

2. A system for improving the uniformity of temperature and humidity between tobacco strip bins according to claim 1, characterized in that: The dehumidification chimney (2) comprises a guide section (2-1), a thermal power section (2-2) and a main body section (2-3) which are sequentially connected and arranged from bottom to top; The inlet of the guide section (2-1) serves as the inlet of the dehumidification chimney (2), and its opening is opposite to the flow direction of the cooling and dehumidification airflow; the thermal power section (2-2) is a heating jacket with a tubular structure, and the main body section (2-3) is a tubular structure, and its outlet serves as the outlet of the dehumidification chimney (2), and is located at the top of the smoke bunker.

3. A system for improving the uniformity of temperature and humidity between tobacco strip bins according to claim 2, characterized in that: The thermal power section (2-2) is equipped with a built-in PID temperature control system.

4. A system for improving the uniformity of temperature and humidity between tobacco strip bins according to claim 3, characterized in that: It also includes a top thermometer (2-4), a cooling and dehumidification device (5), a corner thermometer and hygrometer (6) and a compartment thermometer and hygrometer (7); The cooling and dehumidifying device (5) and the inter-bin temperature and humidity meter (7) are arranged in the tobacco strip bin, and a cooling and dehumidifying airflow is formed in the tobacco strip bin under the action of the cooling and dehumidifying device (5), and the top thermometer (2-4) is arranged at the top of the main body section (2-3); The dehumidification chimney (2) is arranged at a corresponding chimney stack (3) located at a turning position downwind of the cooling and dehumidification airflow; the corner thermometer and hygrometer (6) is arranged in a one-to-one correspondence with the dehumidification chimney (2), and the corner thermometer and hygrometer (6) is arranged at the bottom end of the middle of the corresponding wall lane (a).

5. A system for improving the uniformity of temperature and humidity between tobacco strip bins according to claim 4, characterized in that: The cooling and dehumidifying equipment (5) is symmetrically arranged away from each other on the midline of the length direction of the tobacco strip bin, and its dry air outlet is located on its top, and the dry air outlet direction is inclined upward along the midline of the length direction of the tobacco strip bin.

6. A system for improving the uniformity of temperature and humidity between tobacco strip bins according to claim 5, characterized in that: An operating plane (c) penetrating the tobacco strip bin is arranged in the middle of the tobacco strip bin, and a tobacco strip tunnel (b) is formed between adjacent tobacco strips (3); the inter-bin temperature and humidity meter (7) is arranged at the intersection of the operating plane (c) and the tobacco strip tunnel (b), and is located in the middle of the tobacco strip bin in the up-down direction.

7. A system for improving the uniformity of temperature and humidity between tobacco strip bins according to claim 4, characterized in that: The thermodynamic section (2-2) and the main section (2-3) are in the form of a circular tube structure, the guide section (2-1) is in the form of an arc-shaped plate structure, and the concave surface of the guide section (2-1) is opposite to the flow direction of the cooling and dehumidifying airflow.

8. A control method for improving the uniformity of temperature and humidity between tobacco strip bins, using the system for improving the uniformity of temperature and humidity between tobacco strip bins as claimed in any one of claims 4 to 7 to control the uniformity of temperature and humidity between tobacco strip bins, characterized in that: The process includes: In the first step, the ambient temperature measured by the corner thermometer and hygrometer (6) is T 底 , relative humidity is RH 底 The ambient temperature measured by the top thermometer (2-4) is T 顶 The ambient temperature measured in real time by the inter-compartment thermometer and humidity meter (7) is T 仓 , relative humidity is RH 仓 : If each T 底 and each T 仓 are both < T0, and each RH 底 and each RH 仓 are both < RH0, then each thermodynamic section (2-2) and the dehumidifying and cooling equipment (5) both enter or maintain the shutdown state, and the first step is cycled until the system for improving the temperature and humidity uniformity in the cut tobacco storage warehouse shuts down; Otherwise, proceed to step 2; Wherein, T0 is the preset allowable ambient temperature, and RH0 is the preset allowable relative humidity; Step 2: If there is any T 仓 ≥T0 and / or any RH 仓 ≥RH0, or any RH exists 底 ≥RH0, start the cooling and dehumidification equipment (5), and continuously monitor the T measured by the top thermometers (2-4). 顶 Until each T 顶 All remain stable and proceed to the third step; Otherwise, proceed to step 4; Step 3: Approve and update each ΔT1 and RH 底 The marking situation; Then, judge each T 底 The value of T 底 T ≥ T0 底 The corresponding ΔT1 mark determines each RH 底 The value of RH will satisfy 底 RH ≥ RH0 底 mark; For ΔT1 and RH 底 The marking situation is judged: If any labeled ΔT1 and / or labeled RH are present 底 , then proceed to step 5, and repeat step 3 before the end of step 5; Otherwise, turn off the cooling and dehumidification equipment (5) and proceed to the first step; Among them, ΔT1 is the corresponding set of T 底 With T 顶 The difference between Step 4: approve and update the marking status of each ΔT1; Then, judge each T 底 The value of T 底 T ≥ T0 底 The corresponding ΔT1 mark is used to judge the marking status of ΔT1: If there is any marked ΔT1, proceed to step 5, and repeat step 1 before step 5 is completed; Otherwise, proceed to the first step; Step 5: Continue to review and update ΔT1 and RH 底 Marking situation: If there is a marked RH 底 , then immediately start the marked RH 底 corresponding to the thermodynamic section (2-2), and then dynamically adjust the heating temperature T of the thermodynamic section (2-2) 热 , keep ΔT2 > 5°C until the T 底 corresponding to this RH 底 < T0, RH 底 < RH0, each T 仓 is < T0, each RH 仓 is < RH0, and ΔT3 ≤ 2°C, ΔRH ≤ 2%, turn off the thermodynamic section (2-2) and cancel the marking of this RH 底 , repeat step five; If there is no marked RH 底 , and there is a marked ΔT1, continuously monitor the value of the marked ΔT1. When any ΔT1 satisfies ΔT1 < 5°C, immediately start the thermodynamic section (2-2) corresponding to the marked ΔT1, and then dynamically adjust the heating temperature T of the thermodynamic section (2-2) 热 , and keep ΔT2 > 5°C until the T corresponding to this ΔT1 底 < T0, RH 底 < RH0, each T 仓 are all < T0, each RH 仓 are all < RH0, and ΔT3 ≤ 2°C, ΔRH ≤ 2%, close the thermodynamic section (2-2) and cancel the mark of this ΔT1, and repeat the fifth step; Otherwise, the cooling and dehumidifying device (5) is turned off or the cooling and dehumidifying device (5) is kept in a stopped state, the fifth step is ended, and the first step is performed; Among them, ΔT2 is the corresponding set of T 热 With T 顶 The difference between ΔT3 and T 底 With each T 仓 The largest difference among the two, ΔRH is a certain RH 底 With each RH 仓 The largest difference among the .

9. A control method for improving the uniformity of temperature and humidity between tobacco strip bins according to claim 8, characterized in that: 30℃≤T0≤32℃,60%≤RH0≤65%,35℃≤T 热 ≤40℃。

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