CN110731178A - grain storage simulation storehouse with accurate temperature control - Google Patents
grain storage simulation storehouse with accurate temperature control Download PDFInfo
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- CN110731178A CN110731178A CN201911221907.XA CN201911221907A CN110731178A CN 110731178 A CN110731178 A CN 110731178A CN 201911221907 A CN201911221907 A CN 201911221907A CN 110731178 A CN110731178 A CN 110731178A
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- 238000004088 simulation Methods 0.000 title claims abstract description 53
- 239000010410 layer Substances 0.000 claims abstract description 114
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 55
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 20
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 10
- 238000009413 insulation Methods 0.000 claims abstract description 6
- 239000011229 interlayer Substances 0.000 claims abstract description 4
- 230000007246 mechanism Effects 0.000 claims description 47
- 230000003014 reinforcing effect Effects 0.000 claims description 21
- 239000004033 plastic Substances 0.000 claims description 16
- 229920003023 plastic Polymers 0.000 claims description 16
- 229920006327 polystyrene foam Polymers 0.000 claims description 11
- 238000004321 preservation Methods 0.000 claims description 10
- 229910000831 Steel Inorganic materials 0.000 claims description 9
- 239000010959 steel Substances 0.000 claims description 9
- 241000251468 Actinopterygii Species 0.000 claims description 5
- 229920005830 Polyurethane Foam Polymers 0.000 claims description 5
- 239000011496 polyurethane foam Substances 0.000 claims description 5
- 238000007789 sealing Methods 0.000 claims description 3
- 238000005259 measurement Methods 0.000 abstract description 5
- 239000003507 refrigerant Substances 0.000 description 19
- 239000007788 liquid Substances 0.000 description 14
- 239000007789 gas Substances 0.000 description 11
- 238000012546 transfer Methods 0.000 description 9
- 238000013461 design Methods 0.000 description 8
- 238000000034 method Methods 0.000 description 7
- 239000010963 304 stainless steel Substances 0.000 description 6
- 229910000589 SAE 304 stainless steel Inorganic materials 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
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- 230000006835 compression Effects 0.000 description 4
- 238000007906 compression Methods 0.000 description 4
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- 238000011160 research Methods 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 238000005728 strengthening Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 238000004378 air conditioning Methods 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000005485 electric heating Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
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- 239000007787 solid Substances 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
- 238000009827 uniform distribution Methods 0.000 description 1
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01F—PROCESSING OF HARVESTED PRODUCE; HAY OR STRAW PRESSES; DEVICES FOR STORING AGRICULTURAL OR HORTICULTURAL PRODUCE
- A01F25/00—Storing agricultural or horticultural produce; Hanging-up harvested fruit
- A01F25/14—Containers specially adapted for storing
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01F—PROCESSING OF HARVESTED PRODUCE; HAY OR STRAW PRESSES; DEVICES FOR STORING AGRICULTURAL OR HORTICULTURAL PRODUCE
- A01F25/00—Storing agricultural or horticultural produce; Hanging-up harvested fruit
- A01F25/16—Arrangements in forage silos
-
- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23B—PRESERVING, e.g. BY CANNING, MEAT, FISH, EGGS, FRUIT, VEGETABLES, EDIBLE SEEDS; CHEMICAL RIPENING OF FRUIT OR VEGETABLES; THE PRESERVED, RIPENED, OR CANNED PRODUCTS
- A23B9/00—Preservation of edible seeds, e.g. cereals
- A23B9/10—Freezing; Subsequent thawing; Cooling
-
- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23B—PRESERVING, e.g. BY CANNING, MEAT, FISH, EGGS, FRUIT, VEGETABLES, EDIBLE SEEDS; CHEMICAL RIPENING OF FRUIT OR VEGETABLES; THE PRESERVED, RIPENED, OR CANNED PRODUCTS
- A23B9/00—Preservation of edible seeds, e.g. cereals
- A23B9/16—Preserving with chemicals
- A23B9/18—Preserving with chemicals in the form of gases, e.g. fumigation; Compositions or apparatus therefor
- A23B9/20—Preserving with chemicals in the form of gases, e.g. fumigation; Compositions or apparatus therefor in a controlled atmosphere, e.g. partial vacuum, comprising only CO2, N2, O2 or H2O
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
- Y02A40/10—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in agriculture
- Y02A40/51—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in agriculture specially adapted for storing agricultural or horticultural products
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- Chemical & Material Sciences (AREA)
- Environmental Sciences (AREA)
- Wood Science & Technology (AREA)
- Zoology (AREA)
- Food Science & Technology (AREA)
- Polymers & Plastics (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Storage Of Harvested Produce (AREA)
Abstract
grain storage simulation storehouse with accurate temperature control, the wall of the simulation storehouse body is provided with a temperature control layer, the top of the simulation storehouse body is provided with a movable top cover, the bottom of the simulation storehouse body, the temperature control layer and the interlayer of the movable top cover are provided with heat insulation layers, the outer side of the lower end of the temperature control layer is provided with a water inlet, the outer side of the upper end of the temperature control layer is provided with a water outlet and an overflow port, the center of the inner side of the bottom of the simulation storehouse body is provided with an overground cage, the wall is provided with an air inlet communicated with the overground cage, the upper end of the simulation storehouse body is provided with an air outlet, the upper part in the simulation storehouse body is provided with a grain condition measurement and control machine, a nitrogen concentration detector and an.
Description
Technical Field
The invention relates to grain storage simulation bins, in particular to grain storage simulation bins with accurate temperature control.
Background
The grain storage method is characterized in that the grain storage capacity is large in China, the storage period is long, the reduction of quality loss and the reduction of storage energy consumption are important points of the grain industry in China, and therefore, the influence of factors such as temperature, humidity and gas components in a grain storage ecological system on the grain is particularly important when the grain storage ecological system is researched.
CN208060495U discloses grain storage simulation test storehouse, it is the hot-blast or cold wind that adopts the air conditioner to produce gets into the temperature regulation intracavity and controls the temperature to the grain storage room through the conduction of inner wall, however, because the volume instability of gas, be easy to compress and expand, reasons such as specific heat capacity are low, utilize gas temperature control to have heat transfer uneven again, local temperature too high or low, some dead angle position can't reach the temperature control effect, the heat loss is very fast, control the temperature precision not high, can only reach technical defect such as the accuracy of + -0.5 ℃ at most.
CN108184444A discloses grain storage devices with constant temperature control function, which control the temperature of internal grains and play a role in storing grains, however, in terms of storing grains, the heating device in the device is constant inside the grain pile, only local grains can be heated, the grain pile is heated unevenly, the problems of dewing and mildewing of the grain pile are easy to occur, the environmental temperature cannot be simulated, and the function of simulating storage research is difficult to play.
CN205510992U discloses grain storage devices with constant temperature control function, which control the temperature of the internal grain and play a role in storing grain, however, in terms of storing grain, although the device solves the problem of uneven heating, the electric heating device adopted does not have refrigeration effect, is not suitable for storing grain in summer or in high temperature areas, cannot simulate the environmental temperature, and is difficult to play a role in simulating storage research.
CN109060873A discloses a grain quality heat transfer and dew formation parameter detection device and method, wherein an airflow cold source and an airflow heat source are respectively connected to two opposite bin walls of a test bin to maintain temperature difference, and the dew formation phenomenon of a grain pile in the test bin is promoted to research the quality heat transfer and the dew formation rule of grains.
Disclosure of Invention
The invention aims to solve the technical problem of overcoming the defects in the prior art, and provides grain storage simulation warehouses capable of simulating grain storage solid bins highly, accurately simulating various grain storage influence factors including grain storage gas composition, gas flow rate, temperature and humidity difference and the like, and exploring the change rule of a grain storage ecosystem, and the grain storage simulation warehouses with accurate temperature control, accurate and stable temperature control and low-loss heat transfer.
The grain storage simulation bin comprises grain storage simulation bins with accurate temperature control, wherein the walls of the simulation bin bodies are provided with temperature control layers, the tops of the bin bodies are provided with movable top covers, the bottoms of the bin bodies, the temperature control layers and the interlayers of the movable top covers are internally provided with heat insulation layers, the outer sides of the lower ends of the temperature control layers are provided with water inlets, the outer sides of the upper ends of the temperature control layers are provided with water outlets and water overflow ports, the centers of the inner sides of the bottoms of the bin bodies are provided with ground cages which are longitudinally connected with the bin walls on two sides, air inlets which are communicated with the ground cages are arranged on the bin walls, the upper ends of the bin bodies are provided with air outlets, the upper parts in the bin bodies are provided with grain condition measuring and controlling machines, nitrogen concentration detectors and electronic hygrothermographs which are connected with measuring and controlling panels outside the bin bodies.
The simulation cabin discards the existing commonly used gas refrigerant, and due to the reasons of unstable volume of gas, easiness in compression and expansion, low specific heat capacity and the like, the technical defects that the temperature control by using the gas refrigerant is uneven in heat transfer, too high or too low in local temperature, the temperature control effect cannot be achieved at partial dead corner parts, the heat dissipation is fast, the temperature control precision is low and the like exist, and the heat transfer is uneven due to the fact that the whole space cannot be densely distributed because gaps exist in other temperature control modes such as a coil pipe and the like. The invention adopts liquid refrigerant to control temperature, and compared with other temperature control modes such as gas or coil pipes, the liquid refrigerant temperature control has the advantages of uniform distribution, high heat transfer efficiency, high temperature control precision and the like.
If the mode of circulating downward-inward-upward-outward is adopted in the temperature control layer, the constant of the flow velocity of the liquid refrigerant can be ensured, the stability of temperature control is facilitated, and if the mode of upward-inward-downward-outward is adopted, the flow velocity is larger than that of the water inlet due to the initial speed of the water outlet and the gravity action of the liquid refrigerant, which are easily brought by a water pump, and the refrigerant can flow to the water outlet through the shortest path to form a linear shape, so that the uniform temperature control on the surface position is not facilitated, and the uneven liquid distribution in the.
The design of overflow hole is when the flow of water inlet is greater than the flow of delivery port, can effectually carry out the pressure release to the liquid matter refrigerant in the accuse temperature layer, avoids the destruction in accuse temperature layer. The grain temperature, the nitrogen concentration in the bin, the temperature and humidity of the bin and other information of each part of the grain heap are monitored through the grain condition measuring and controlling machine, the nitrogen concentration detector and the electronic hygrothermograph, so that the operator can conveniently master the information in the bin.
The working process of the simulation bin of the invention is as follows: after the grain is filled in the bin body, the movable top cover is closed, liquid refrigerant is injected into the temperature control layer from a water inlet on the outer side of the lower end of the temperature control layer, and the liquid refrigerant is discharged through a water outlet and an overflow port on the outer side of the upper end of the temperature control layer after circulating in the temperature control layer; sucking air out or injecting nitrogen through an air inlet which is arranged on the bin wall and is communicated with the overground cage; meanwhile, a measurement and control panel outside the bin body controls or reads numerical values on the grain condition measurement and control machine, the nitrogen concentration detector and the electronic hygrothermograph.
The core of the design of the flow guide mechanism is that 1) the flow path of the refrigerant is adjusted to redistribute the refrigerant, so that the refrigerant can fully exchange heat with every positions of the temperature control layer in time, 2) the refrigerant flows smoothly, namely the resistance in the flowing process is small, the heat is not deposited at individual positions, the uniformity is influenced, and the problem that the kinetic energy is converted into heat energy to influence the accuracy of temperature control due to too large resistance can be avoided.
Preferably, the water inlet, the water outlet and the overflow port on the outer side of the temperature control layer are matched with the water inlet end and the water outlet end of the sealed flow guide channel.
Preferably, the overflow port and the water outlet are in the same diversion area, and the overflow port is higher than the water outlet by more than or equal to 6 cm., and the overflow port must be higher than the water outlet in order to ensure that the temperature control layer has enough high liquid level, namely, the liquid level is higher than the surface layer of the grain pile.
Preferably, the flow guide mechanisms and the bottom surface of the bin body form an angle of 2-8 degrees, the flow guide mechanisms in the temperature control layer spirally extend upwards to the top end of the temperature control layer in parallel, the relative vertical distances between the flow guide mechanisms in adjacent layers are equal and are 16-70 cm., if the inclination angle of the flow guide mechanisms is too small, the number of turns of the coils is increased, the interval of the flow guide channels is reduced, when the interval is reduced to , the flow resistance is increased, meanwhile, the flow guide path is lengthened, the kinetic energy is converted into heat energy, if the inclination angle of the flow guide mechanisms is too large, the flow resistance is large, the circulation replacement efficiency is low, the interval of the flow guide channels is increased, and the uniformity of temperature control is affected.
Preferably, the flow guide mechanism is parallel to the bottom surface of the bin body, the flow guide mechanism equally divides the temperature control layer into 2n +1 layers, n continuous and longitudinal S-shaped flow guide mechanisms are further arranged in the temperature control layer on the side provided with the water inlet, the water outlet and the overflow port , the arc outer sides of the uppermost end and the lowermost end of each S-shaped flow guide mechanism respectively face the water outlet and the water inlet, the horizontal flow guide mechanism is connected with the arc outer sides, the horizontal flow guide mechanism is 9-30 cm. away from the arc inner sides, n is larger than or equal to 1, the arc structure can convert the kinetic energy of the refrigerant into potential energy, the loss of the kinetic energy can be reduced, the circulation rate is accelerated, and the kinetic energy can be better prevented from being converted into heat energy due to the effect of too.
Preferably, the upper arc and the lower arc of the S-shaped flow guide mechanism are tangent, the radius of the arc is 0.4-0.8 m, and the angle of the arc is 60-70 degrees.
Preferably, the flow guide mechanisms of adjacent layers in the temperature control layer provided with the water inlet, the water outlet and the overflow port are parallel to each other and form a plane of 20-30 degrees with the bottom surface of the bin body, the relative vertical distances between the flow guide mechanisms of the adjacent layers are equal and are 30-50 cm, and the flow guide mechanisms of the other three sides extend in parallel with the bottom surface of the bin body, a smaller inclination angle can better reduce the resistance of refrigerant flowing, reduce the loss of kinetic energy and accelerate the circulating speed, and compared with the flow guide mechanisms which extend upwards in a spiral parallel way, the flow guide mechanisms have the advantages that partial pressure can be shared, and the pressure on the bottom of the bin body can be reduced due to the stepped design of the flow guide mechanism on the side.
Preferably, the thickness of the temperature control layer is 9-11 mm. The heat exchange of the refrigerant and the unit area of the 304 stainless steel material must be equal, and the specific heat capacity, the density and related formulas are calculated, the heat loss in the actual heat transfer process is comprehensively considered, and the thickness of the temperature control layer is optimal to be 9-11 mm.
Preferably, reinforcing ribs are arranged outside two sides of the temperature control layer and are fixed by screws. The mode of fixing the strengthening rib in accuse temperature layer both sides with the screw has utilized the strengthening rib intensity high, the difficult characteristics that deform, through the pulling force that apportions screw single-point and bear, avoids the local deformation of screw fixation department accuse temperature layer wall face to improve the upper limit of pressure-bearing, play the resistance to compression effect, guarantee that accuse temperature layer wall does not take place deformation.
Preferably, reinforcing ribs are arranged at the relative vertical distance of every 20-30 cm.
Preferably, the reinforcing ribs are hollow steel bars, the width of the reinforcing ribs is 6-10 cm, and the thickness of the reinforcing ribs is 1-3 cm. The hollow steel bar is made of a 304 stainless steel plate with the thickness of 2-4 mm. The hollow steel bars are filled with polystyrene foam plastic plates.
Preferably, the distance for fixing the screw is 20-40 cm.
Preferably, the heat preservation is detachable bilayer structure, and the inlayer is polystyrene foam plastic board, and the skin is the steel sheet, polystyrene foam plastic board's thickness is 2 ~ 4 cm. The polystyrene foam plastic board on the inner layer of the heat-insulating layer of the bin wall is matched with the shape of the reinforcing rib. The steel plate is preferably a 304 stainless steel plate 3mm thick. The double-layer structure can prevent the heat exchange between the inside and the outside of the storage system, and ensure the stability of temperature control. The polystyrene foam plastic board is adopted as a heat insulation material, so that the heat insulation material can better approach the real-warehouse condition, the simulation degree is higher, and meanwhile, the heat insulation material has the advantages of excellent heat insulation, excellent high-strength compression resistance, excellent hydrophobic and moisture-proof properties, light weight, convenience in use, good stability and corrosion resistance, environmental friendliness and the like.
Preferably, the upper end of the heat preservation layer outside the temperature control layer is provided with a buckle matched with the outer side of the top end of the temperature control layer. The buckle makes the heat preservation convenient dismantlement.
Preferably, the inner side of the movable top cover is provided with an electric hydraulic push rod connected with the bin wall of the bin body.
Preferably, a polyurethane foam plastic strip which is matched with the upper edge of the bin wall of the bin body in a sealing mode is arranged on the inner side of the movable top cover. The polyurethane foam plastic strip has the advantages of high density, compression resistance, strong resilience, good sealing property and the like.
Preferably, the ground cage is an arc-shaped wind net, and fish scale type air holes are distributed in the wind net. The design of the ground cage can ensure that the air quantity at each position of the ground cage is uniform and is not easy to block, thereby ensuring the uniformity of the air quantity at each position of the grain pile in the air conditioning process.
Preferably, the length of the ground cage is matched with the size of the cabin body, the width of the ground cage is 30-50 cm, the height of the ground cage is 20-35 cm, and the thickness of the ground cage is 1.0-3.0 mm.
Preferably, the scale-shaped pores have a size of 10 × 5 × 1 mm.
Preferably, the temperature measuring cables are hung from four corners of the top of the bin body and the center of the bin body, each temperature measuring cable is provided with more than or equal to 3 temperature measuring points, the temperature measuring points comprise 1 temperature measuring point positioned in the center of the grain pile, and the distance between the uppermost temperature measuring point and the lowermost temperature measuring point and the top end or the bottom of the grain pile is 0.1-0.2 m. The temperature measuring cable can monitor the grain temperature of each part of the grain pile at any time.
Preferably, the outer side of the bin body is provided with a handle, and the bottom of the bin body is provided with a land wheel. The installation of handle and land wheel can make things convenient for the storehouse body to remove along with other devices.
The base material of the simulated chamber of the present invention is preferably 304 stainless steel 3mm thick.
The simulation bin has the following beneficial effects: the simulation bin regulates the temperature of the bin wall by using a liquid medium, highly simulates a grain storage real bin, realizes high-efficiency low-loss heat transfer and accurate temperature control of a bin body, creatively provides various interlayer flow guide structures suitable for liquid quality temperature control on the premise of ensuring the accuracy and stability of temperature control, has no temperature control dead angle in the whole bin body, and ensures that the temperature control accuracy reaches +/-0.1 ℃ by design in the aspects of heat preservation, temperature control, temperature equalization and the like, thereby realizing the simulation of the external environment temperature of the grain bin; through monitoring the internal parameters of the bin body, the accurate simulation and related experiments of various grain storage influence factors including grain storage gas composition, gas flow rate, temperature and humidity difference and the like can be realized, and the change rule of a grain storage ecosystem is explored.
Drawings
FIG. 1 is a longitudinal sectional view of the side of an 1 grain storage simulation bin with accurate temperature control according to the embodiment of the invention;
FIG. 2 is a longitudinal sectional view of another side of the simulated granary body of 1 grain storage simulation granary with accurate temperature control according to embodiment 1 of the present invention;
FIG. 3 is a longitudinal sectional view of a temperature control layer and an insulating layer of 1 grain storage simulation warehouses with precise temperature control according to the embodiment of the invention;
FIG. 4 is an expanded view of the longitudinal section of the temperature control layer of 1 grain storage simulation silos with precise temperature control in accordance with the present invention;
FIG. 5 is a front view of the temperature control layer of 1 grain storage simulation bins with precise temperature control in accordance with example 1 of the present invention;
FIG. 6 is an expanded view of the longitudinal section of the temperature control layer of 2 grain storage simulation silos with precise temperature control in accordance with the present invention;
fig. 7 is a longitudinal section development view of the temperature control layer of 3 grain storage simulation silos with precise temperature control according to the embodiment of the present invention.
Detailed Description
The invention is further illustrated in the following examples and figures.
The base material of the simulation bin is 304 stainless steel with the thickness of 3 mm; the devices or components used in the embodiments of the present invention are commercially available in a conventional manner unless otherwise specified.
Example 1 of grain storage simulation storehouse with accurate temperature control
As shown in fig. 1-5, the wall of the simulated bin body is provided with a temperature control layer 1 (length 1.5m, width 1.0m, height 1.3 m) with thickness of 1cm, the top of the bin body is provided with a movable top cover 2, and the bottom of the bin body, the temperature control layer 1 and the movable top cover 2 are externally provided with heat preservation layers 3; a water inlet 1-1 is formed in the outer side of the lower end of the temperature control layer 1; the outer side of the upper end of the temperature control layer 1 is provided with a water outlet 1-2 and an overflow port 1-3; an overground cage 4 (with the length of 1m, the width of 0.4m and the height of 0.26 m) is arranged in the center of the inner side of the bottom of the bin body, the overground cage 4 is longitudinally connected with bin walls at two sides, and air inlets 1-4 communicated with the overground cage 4 are arranged on the bin walls; an air outlet 5 is arranged at the upper end of the bin body; the upper part in the bin body is provided with a grain condition measuring and controlling machine 7, a nitrogen concentration detector 8 and an electronic hygrothermograph 9 which are connected with a measuring and controlling panel 6 outside the bin body; the grain condition measuring and controlling machine 7 is connected with temperature measuring cables 7-1 distributed in the bin body;
the temperature control layer 1 is of a hollow structure, the temperature control layer 1 is divided into a closed flow guide channel from bottom to top by a flow guide mechanism 1-5, a water inlet 1-1, a water outlet 1-2 and an overflow port 1-3 on the outer side of the temperature control layer 1 are matched with a water inlet end and a water outlet end of the sealed flow guide channel, the overflow port 1-3 and the water outlet 1-2 are in the same flow guide area, the overflow port 1-3 is higher than the water outlet 1-210cm, the flow guide mechanism 1-5 and the bottom of a cabin body are 5.0 degrees, the flow guide mechanism 1-5 extends upwards in the temperature control layer 1 in a spiral parallel manner to the top end of the temperature control layer 1, the relative vertical distance between the flow guide mechanisms 1-5 of adjacent layers is equal and 43.2cm, the thickness of the temperature control layer 1 is 10mm, reinforcing ribs 1-6 are arranged on the outer sides of two sides of the temperature control layer 1 and fixed by screws 1-6-1, the reinforcing ribs 1 are fixed by screws 1-6-1, the reinforcing ribs 1-6 are arranged at the relative vertical distance of every 25cm, the hollow reinforcing ribs 1-6 cm, the hollow reinforcing ribs are made of hollow 636 hollow reinforcing ribs, the hollow reinforcing ribs are made of hollow steel bar (8 cm, the reinforcing ribs, the reinforcing bars are made of the top end of the cabin body) of the cabin body is made of the temperature control layer 1-6 cm, the polystyrene slab) and the polystyrene slab, the hollow temperature control layer is made of the polystyrene slab near;
the heat-insulating layer 3 is of a detachable double-layer structure, the inner layer is a polystyrene foam plastic plate with the thickness of 4cm, the inner polystyrene foam plastic plate of the heat-insulating layer 3 of the bin wall is matched with the reinforcing ribs 1-6 in shape, and the outer layer is a 304 stainless steel plate with the thickness of 3 mm; the upper end of the heat insulation layer 3 outside the temperature control layer 1 is provided with a buckle 3-3 matched with the outer side of the top end of the temperature control layer 1; an electric hydraulic push rod 2-1 connected with the bin wall of the bin body is arranged on the inner side of the movable top cover 2; a polyurethane foam plastic strip 2-2 which is hermetically matched with the upper edge of the bin wall of the bin body is arranged on the inner side of the movable top cover 2; the ground cage 4 is an arc-shaped wind net, and fish scale type air holes are distributed in the wind net; the size of the ground cage 4 is 1000 multiplied by 400 multiplied by 250mm, the thickness is 1.5mm, and the size of the scale-shaped air holes is 10 multiplied by 5 multiplied by 1 mm; the temperature measuring cables 7-1 are hung from the four corners and the center of the top of the bin body, each temperature measuring cable is provided with 3 temperature measuring points 7-1-1, wherein 1 temperature measuring point is positioned in the center of the grain pile, and the distance between the uppermost temperature measuring point 7-1-1 and the lowermost temperature measuring point 7-1 and the top end or the bin bottom of the grain pile is 0.15 m; the outside of the bin body is provided with a handle 10, and the bottom of the bin body is provided with a land wheel 11.
The working process of the simulation bin of the invention is as follows: after the grain bin is filled with grains, the movable top cover 2 is closed, liquid refrigerant is injected into the temperature control layer 1 from a water inlet 1-1 on the outer side of the lower end of the temperature control layer 1, and the liquid refrigerant is discharged through a water outlet 1-2 and an overflow port 1-3 on the outer side of the upper end of the temperature control layer 1 after circulating in the temperature control layer 1 along a flow guide channel separated by a flow guide mechanism 1-5; sucking air out or injecting nitrogen through air inlets 1-4 formed in the bin wall and communicated with the overground cage 4; meanwhile, the measurement and control panel 6 outside the bin body controls or reads numerical values on the grain condition measurement and control machine 7, the nitrogen concentration detector 8 and the electronic hygrothermograph 9.
Through detection, the simulation bin can regulate and control the temperature of the bin wall, the temperature of the bin body is accurately controlled, and the temperature control precision reaches +/-0.1 ℃ due to the design in the aspects of heat preservation, temperature control, temperature equalization and the like.
The difference between the embodiment of the invention and the embodiment 1 is that as shown in fig. 6, the flow guide mechanism 1-5 is parallel to the bottom surface of the bin body, the flow guide mechanism 1-5 equally divides the temperature control layer 1 into 3 layers, 1 continuous and longitudinally S-shaped flow guide mechanisms 1-5 are further arranged in the temperature control layer 1 on the side provided with the water inlet 1-1, the water outlet 1-2 and the overflow port 1-3 , the arc outer sides of the uppermost end and the lowermost end of the S-shaped flow guide mechanism 1-5 respectively face the water outlet 1-2 and the water inlet 1-1, the horizontal flow guide mechanism 1-5 is connected with each arc outer side, the horizontal flow guide mechanism 1-5 is separated from each arc inner side by 20cm, the upper and lower arc of the S-shaped flow guide mechanism 1-5 are tangent, the arc radius is 0.60m, and the arc angle is 66.0 degrees, and the same as the embodiment 1.
Through detection, the simulation bin can regulate and control the temperature of the bin wall, the temperature of the bin body is accurately controlled, and the temperature control precision reaches +/-0.1 ℃ due to the design in the aspects of heat preservation, temperature control, temperature equalization and the like.
The difference between the embodiment of the invention and the embodiment 1 is that as shown in figure 7, the flow guide mechanisms 1-5 of the adjacent layers in the temperature control layer 1 provided with the water inlet 1-1, the water outlet 1-2 and the overflow port 1-3 are parallel to each other and form 23.4 degrees with the bottom surface of the bin body, the vertical distances between the flow guide mechanisms 1-5 of the adjacent layers are equal and 39.8cm, and the flow guide mechanisms in the temperature control layer 1 of the other three sides extend parallel to the bottom surface of the bin body, which is the same as the embodiment 1.
Through detection, the simulation bin can regulate and control the temperature of the bin wall, the temperature of the bin body is accurately controlled, and the temperature control precision reaches +/-0.1 ℃ due to the design in the aspects of heat preservation, temperature control, temperature equalization and the like.
Claims (6)
- The grain storage simulation bin is characterized in that a temperature control layer is arranged on the bin wall of a simulation bin body, a movable top cover is arranged on the top of the simulation bin body, heat insulation layers are arranged in the bottom of the simulation bin body, the temperature control layer and a movable top cover interlayer, a water inlet is arranged on the outer side of the lower end of the temperature control layer, a water outlet and an overflow opening are arranged on the outer side of the upper end of the temperature control layer, an overground cage is arranged in the center of the inner side of the bottom of the simulation bin body, the overground cage is longitudinally connected with the bin walls on two sides, an air inlet communicated with the overground cage is formed in the bin wall, an air outlet is formed in the upper end of the simulation bin body, a grain condition measuring and controlling machine, a nitrogen concentration detector and an electronic hygrothermograph which are connected with a measuring and controlling panel.
- 2. The grain storage simulation bin with the accurate temperature control according to claim 1, wherein the temperature control layer is of a hollow structure and is divided into a closed flow guide channel from bottom to top by a flow guide mechanism, a water inlet, a water outlet and an overflow opening on the outer side of the temperature control layer are matched with a water inlet end and a water outlet end of the closed flow guide channel, the overflow opening and the water outlet are in the same flow guide area, and the height of the overflow opening is more than or equal to 6cm higher than the water outlet.
- 3. The grain storage simulation bin with the accurate temperature control function according to claim 2, characterized in that: the diversion mechanisms and the bottom surface of the bin body form an angle of 2-8 degrees, the diversion mechanisms spirally extend upwards in parallel in the temperature control layer to the top end of the temperature control layer, and the relative vertical distances between the diversion mechanisms of adjacent layers are equal and are 16-70 cm;or the flow guide mechanism is parallel to the bottom surface of the bin body, the flow guide mechanism equally divides the temperature control layer into 2n +1 layers, n continuous and S-shaped flow guide mechanisms are further arranged in the temperature control layer on the side provided with the water inlet, the water outlet and the overflow port , the arc outer sides of the uppermost end and the lowermost end of each S-shaped flow guide mechanism respectively face the water outlet and the water inlet, the horizontal flow guide mechanism is connected with each arc outer side, and the horizontal flow guide mechanism is 9-30 cm away from each arc inner side;or the flow guide mechanisms of adjacent layers in the temperature control layer provided with the water inlet, the water outlet and the overflow port are parallel to each other and form a 20-30 DEG plane with the bottom surface of the bin body, the relative vertical distances between the flow guide mechanisms of the adjacent layers are equal and are 30-50 cm, and the flow guide mechanisms of the other three sides in the temperature control layer extend in parallel with the bottom surface of the bin body.
- 4. The grain storage simulation bin with the accurate temperature control according to of claims 1-3, wherein the thickness of the temperature control layer is 9-11 mm, the outer portions of both sides of the temperature control layer are provided with reinforcing ribs and fixed by screws, reinforcing ribs are arranged at a relative vertical distance of every 20-30 cm, the reinforcing ribs are hollow steel bars, the width of the reinforcing ribs is 6-10 cm, the thickness of the reinforcing ribs is 1-3 cm, and the distance of the screw fixation is 20-40 cm.
- 5. The grain storage simulation bin with the accurate temperature control according to of claims 1-3, wherein the heat preservation layer is a detachable double-layer structure, the inner layer is a polystyrene foam plastic plate, the outer layer is a steel plate, the thickness of the polystyrene foam plastic plate is 2-4 cm, the upper end of the heat preservation layer outside the temperature control layer is provided with a buckle matched with the outer side of the top end of the temperature control layer, the inner side of the movable top cover is provided with an electric hydraulic push rod connected with the bin wall of the bin body, the inner side of the movable top cover is provided with a polyurethane foam plastic strip matched with the bin wall of the bin body in a sealing manner, the ground cage is an arc air net, the air net is fully distributed with fish scale type air holes, the length of the ground cage is matched with the size of the bin body, the width of the ground cage is 30-50 cm, the height of the ground cage is 20-35 cm, the thickness of the ground cage is 1.0-3.0 mm, the size of the fish scale type air holes is 10 x 5 x 1mm, each temperature measuring cable hangs down from the top and is provided with more than or more than 3 temperature measuring points from the top of the bin body, wherein the grain storage simulation bin body is provided with the grain storage simulation bin body with the grain storage.
- 6. The grain storage simulation bin with the accurate temperature control function according to claim 4, wherein the grain storage simulation bin is characterized in that: the heat-insulating layer is of a detachable double-layer structure, the inner layer is a polystyrene foam plastic plate, the outer layer is a steel plate, and the thickness of the polystyrene foam plastic plate is 2-4 cm; the upper end of the heat insulation layer outside the temperature control layer is provided with a buckle matched with the outer side of the top end of the temperature control layer; an electric hydraulic push rod connected with the bin wall of the bin body is arranged on the inner side of the movable top cover; a polyurethane foam plastic strip which is hermetically matched with the upper edge of the bin wall of the bin body is arranged on the inner side of the movable top cover; the ground cage is an arc-shaped wind net, and fish scale type air holes are distributed in the wind net; the length of the ground cage is matched with the size of the cabin body, the width is 30-50 cm, the height is 20-35 cm, and the thickness is 1.0-3.0 mm; the scale-shaped air holes are 10 multiplied by 5 multiplied by 1mm in size; the temperature measuring cables are hung from four corners and the center of the top of the bin body, each temperature measuring cable is provided with more than or equal to 3 temperature measuring points, the temperature measuring points comprise 1 temperature measuring point positioned in the center of the grain pile, and the distance between the uppermost temperature measuring point and the lowermost temperature measuring point and the top end or the bottom of the grain pile is 0.1-0.2 m; the outside of the bin body is provided with a handle, and the bottom of the bin body is provided with a land wheel.
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