CN211406901U - Grain storage analogue means of accurate accuse temperature - Google Patents
Grain storage analogue means of accurate accuse temperature Download PDFInfo
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- CN211406901U CN211406901U CN201922137039.9U CN201922137039U CN211406901U CN 211406901 U CN211406901 U CN 211406901U CN 201922137039 U CN201922137039 U CN 201922137039U CN 211406901 U CN211406901 U CN 211406901U
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Abstract
A grain storage simulation device with accurate temperature control comprises a bin body, a liquid refrigerant temperature control unit and a gas control unit; the wall of the bin body is provided with a temperature control layer, the top of the bin body is provided with a movable top cover, and heat preservation layers are arranged at the bottom of the bin body, the temperature control layer and an interlayer of the movable top cover; the outer side of the lower end of the temperature control layer is provided with a water inlet which is connected with a water outlet of the liquid refrigerant temperature control unit; the outer side of the upper end of the temperature control layer is provided with a water outlet and an overflow port which are connected with a water inlet of the liquid refrigerant temperature control unit; an overground cage is arranged in the center of the inner side of the bottom of the bin body, and an air inlet communicated with the overground cage is arranged on the wall of the bin body and is connected with a nitrogen making device and a ventilation device; the upper end of the bin body is provided with an air outlet which is connected with a nitrogen making device; the upper part in the bin body is provided with a grain condition measuring and controlling machine, a nitrogen concentration detector and an electronic hygrothermograph which are connected with a measuring and controlling panel; the grain condition measuring and controlling machine is connected with a temperature measuring cable. The utility model discloses the device can accurate accuse temperature, and the precision is up to 0.1 ℃.
Description
Technical Field
The utility model relates to a grain storage analogue means, concretely relates to grain storage analogue means of accurate accuse temperature.
Background
"Min is the national base and Gu is the civil life". Grain is a main resource for the survival and the development of the nation, and grain safety is an important foundation for national safety, so that grain storage has very important significance for ensuring the long-term safety of the grain safety in China. The method has the advantages that the grain reserve in China is large, the storage period is long, the quality loss is scientifically and reasonably reduced, and the energy consumption for storage is always the key point of attention of the grain industry in China, so that the influence of factors such as temperature, humidity and gas components in a grain storage ecological system on the grain is particularly important to be researched. In the existing research technology, the grain storage warehouse research has various inconvenient factors such as uncontrollable environmental conditions, more manual intervention measures, higher test cost and the like, so that the container is gradually used for simulation storage research.
CN208060495U discloses a simulation test chamber for grain storage, which uses hot air or cold air generated by an air conditioner to enter a temperature adjusting chamber to control the temperature of a grain storage chamber by the conduction of the inner wall. However, due to the reasons of unstable volume of gas, easy compression and expansion, low specific heat capacity and the like, the temperature control by using gas has the technical defects of uneven heat transfer, overhigh or overlow local temperature, incapability of achieving the temperature control effect at partial dead corner parts, quick heat dissipation, low temperature control precision, and the like, and the highest precision can only achieve the precision of +/-0.5 ℃.
CN108184444A discloses a grain storage device with constant temperature control function, which is used for controlling the temperature of internal grains and playing a role in storing grains. However, in terms of grain storage, 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, mildewing and the like of the grain pile are easy to occur, the environmental temperature cannot be simulated, and the effect of simulating storage research is difficult to achieve.
CN205510992U discloses a grain storage device with constant temperature control function, which is used for controlling the temperature of internal grains and playing a role in storing grains. However, in terms of grain storage, although the device solves the problem of uneven heating compared with the prior art, the electric heating device does not have a refrigeration effect, is not suitable for grain storage in summer or grain storage 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 condensation parameter detection device and method, wherein an airflow cold source and an airflow heat source are respectively connected to two opposite bin walls of an experimental bin to maintain temperature difference, so that the dew condensation phenomenon of grain piles in the experimental bin is promoted to research the quality heat transfer and dew condensation rule of grains. However, the device is a research on special conditions (condensation phenomenon), different in area, incapable of simulating the temperature of the whole barn in the conventional environment, difficult to simulate the change mechanism of the whole grain stack in different temperature environments, and poor in temperature control uniformity and precision due to the fact that the device adopts an airflow cold source and an airflow heat source for temperature control.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that, overcome the above-mentioned defect that prior art exists, provide one kind and can high simulation grain storage real storehouse, accurate simulation including storing up various grain influence factors such as grain gas composition, gas flow rate and humiture difference, explore the change law that stores up grain ecosystem, accuse temperature is accurate, stable, the grain storage analogue means of accurate accuse temperature of low-loss heat transfer.
The utility model provides a technical scheme that its technical problem adopted as follows: a grain storage simulation device with accurate temperature control comprises a bin body, a liquid refrigerant temperature control unit and a gas control unit; the bin wall of the bin body is provided with a temperature control layer, the top of the bin body is provided with a movable top cover, and heat preservation layers are arranged at the bottom of the bin body, the temperature control layer and an interlayer of the movable top cover; the outer side of the lower end of the temperature control layer is provided with a water inlet which is connected with a water outlet of the liquid refrigerant temperature control unit; the outer side of the upper end of the temperature control layer is provided with a water outlet and an overflow port which are respectively connected with a water inlet of the liquid refrigerant temperature control unit; an overground cage is arranged in the center of the inner side of the bottom of the bin body, the overground cage is longitudinally connected with bin walls on two sides, an air inlet communicated with the overground cage is arranged on the bin walls, and the air inlet is connected with a nitrogen making device and a ventilation device of the air control unit; the upper end of the bin body is provided with an air outlet which is connected with a nitrogen making device of the air control unit; the upper part in the bin body is provided with a grain condition measuring and controlling machine, a nitrogen concentration detector and an electronic hygrothermograph which are connected with a measuring and controlling panel outside the bin body; the grain condition measuring and controlling machine is connected with temperature measuring cables distributed in the bin body.
The utility model discloses the device has abandoned the gas quality refrigerant of current general use, because gaseous volume instability, easily is compressed and the inflation, and the reason such as specific heat capacity is low utilizes the gas quality refrigerant accuse temperature to have the heat transfer inequality, and local high temperature or low excessively, and partial dead angle position can't reach the accuse temperature effect, and the heat scatters and disappears very fast, and technical defect such as the temperature control precision is not high, and other accuse temperature modes such as coil pipe have the space again, can't densely cover whole space, lead to the uneven scheduling problem of heat transfer. And the utility model discloses a liquid matter refrigerant accuse temperature, compares other temperature control modes such as gas or coil pipe, and liquid matter accuse temperature has the distribution evenly, passes heat the high efficiency, accuse temperature advantage such as precision height. The utility model discloses the liquid refrigerant temperature control unit that the device used is external device, and it can effectually avoid heating, refrigerating plant to produce the heat and cause the influence to temperature control layer and the storehouse body to compare built-in mode, effectively improves accuse temperature precision, and external mode can make things convenient for temperature control system's maintenance simultaneously, and the maintenance is changed the upgrading scheduling problem.
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 wall of the bin is provided with an air inlet communicated with the overground cage and connected with a nitrogen making device and a ventilation device of the gas control unit through a three-way pipe; and the air outlet of the bin body is connected with the nitrogen making device of the gas control unit and the external atmosphere through a three-way pipe.
The utility model discloses the working process of device does: 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 through the liquid refrigerant temperature control unit, and the liquid refrigerant returns to the liquid refrigerant temperature control unit 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; the air control unit sucks air out of the air inlet which is arranged on the bin wall and is communicated with the overground cage through the ventilation device or injects nitrogen into the air inlet which is arranged on the bin wall and is communicated with the overground cage through the nitrogen making device; 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.
Preferably, the temperature control layer is of a hollow structure, and is divided into a closed flow guide channel from bottom to top by the flow guide mechanism. The core purpose of the design of the flow guide mechanism is as follows: 1) adjusting a refrigerant flow path, redistributing the refrigerant and ensuring that the refrigerant can fully exchange heat with each position 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 to influence the uniformity, and meanwhile, the problem that the kinetic energy is converted into heat energy to influence the temperature control accuracy due to too large resistance can be avoided. The liquid refrigerant circulates in the temperature control layer along the flow guide channels separated by the flow guide mechanism.
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 flow guide area, and the height of the overflow port is more than or equal to 6cm higher than that of the water outlet. The purpose that the overflow opening must be higher than the water outlet is to ensure that the temperature control layer has a sufficiently high liquid level, namely, the liquid level is higher than the surface layer of the grain pile.
Preferably, 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 each adjacent layer are equal and are 16-70 cm. If the inclination angle of the diversion mechanism is too small, the number of turns of the coil is increased, the interval of the diversion channel is reduced, and when the interval is reduced to a certain degree, the flow resistance is increased, and meanwhile, the diversion path is lengthened, so that the kinetic energy is converted into heat energy; if the inclination angle of the flow guide mechanism is too large, the flow resistance is large, the cyclic replacement efficiency is low, and the interval of the flow guide channels is increased, so that the uniformity of temperature control is influenced. Therefore, the proper inclination angle can ensure smaller flow resistance, and simultaneously, the liquid refrigerant is convenient to discharge, so that the liquid refrigerant is not blocked and deposited in the temperature control layer. And the spiral upwards extends to the design at top for the path that the refrigerant flows covers whole storehouse surface and does not have the dead angle, and flow resistance is little, and the cyclic replacement efficiency is higher, and the accuse temperature is more even.
Preferably, the diversion mechanism is parallel to the bottom surface of the bin body, the diversion mechanism divides the temperature control layer into 2n +1 layers, n continuous and longitudinal S-shaped diversion mechanisms are further arranged in the temperature control layer on one side of the water inlet, the water outlet and the overflow port, the arc outer sides of the uppermost end and the lowermost end of the S-shaped diversion mechanism face the water outlet and the water inlet respectively, the horizontal diversion mechanism is connected with the arc outer sides, and the horizontal diversion mechanism is 9-30 cm away from the arc inner sides. And n is more than or equal to 1. The arc-shaped structure can convert the kinetic energy of the refrigerant into potential energy, so that the loss of the kinetic energy can be reduced, the circulating speed is accelerated, and the kinetic energy can be better prevented from being converted into heat energy due to the effect of too large resistance.
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 on one side provided with the water inlet, the water outlet and the overflow port are parallel to each other and form a 20-30-degree angle 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. The smaller inclination angle can better reduce the resistance of refrigerant flow, reduce the loss of kinetic energy and accelerate the circulating speed, and compared with a flow guide mechanism which extends upwards in a spiral parallel manner, the flow guide mechanism has the advantages that part of pressure can be shared, the stepped design of the flow guide mechanism on one side can increase the stress area, and the pressure at the bottom of the bin body is reduced.
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, the reinforcing ribs are arranged one by one at every 20-30 cm of the relative vertical distance.
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.
Preferably, the connected pipelines are provided with ball valves. All the pipe orifices are provided with ball valves to ensure air tightness and water tightness.
Preferably, the nitrogen production device is connected in sequence by an air compressor, an air purification assembly, a cold dryer and a pressure swing adsorption tower. And simulating and controlling the gas components in the bin through a nitrogen making device of the gas control unit. The air purification assembly can remove particles such as dust in the gas and prevent the molecular sieve in the pressure swing adsorption tower from being blocked; the freeze dryer removes moisture from the gas and lowers the temperature of the gas.
Preferably, the freeze dryer is provided with a water outlet.
Preferably, the ventilation means is a suction fan. The flow rate of the gas in the bin is controlled in a simulated manner through a ventilation device of the gas control unit. Compared with a press-in type fan, the air flow in the bin body is from bottom to top, so that lighter grains on the surface of a grain pile can be easily scattered, and the ventilation device adopts a suction type fan, so that the damage to the grain surface can be effectively avoided.
Preferably, a water pump, a temperature measuring device, a heating device, a refrigerating device and a numerical control module are arranged in the liquid refrigerant temperature control unit. The temperature measuring device detects the temperature of the liquid in the liquid refrigerant temperature control unit in real time, feeds the temperature to the numerical control module in time to start and stop the heating device and the refrigerating device, and heats or refrigerates the liquid to reach the set temperature.
The base material of the device of the utility model is preferably 304 stainless steel with the thickness of 3 mm.
The utility model discloses the beneficial effect of device is as follows: the utility model utilizes liquid medium to regulate and control the wall temperature, highly simulates a grain storage real bin, realizes high-efficiency low-loss heat transfer and accurate temperature control of the bin body, creatively provides a plurality of interlayer flow guide structures suitable for liquid temperature control on the premise of ensuring the accuracy and stability of temperature control, has no temperature control dead angle in the whole internal environment of the bin body, and ensures the temperature control accuracy to be +/-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 granary; the gas environment in the granary body is regulated and controlled through the gas control unit, so that the simulation of the gas environment in the granary is realized; 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 (connected to a liquid refrigerant temperature control unit) of one side of a bin body of a grain storage simulation device with accurate temperature control according to embodiment 1 of the present invention;
fig. 2 is a longitudinal sectional view (connected with a gas control unit) of the other side of the bin body of the grain storage simulation device with accurate temperature control in the embodiment 1 of the present invention;
fig. 3 is a longitudinal sectional view of a temperature control layer and a heat insulation layer of a grain storage simulation device with accurate temperature control according to embodiment 1 of the present invention;
fig. 4 is an expanded view of a longitudinal section of a temperature control layer of a grain storage simulation apparatus with precise temperature control according to embodiment 1 of the present invention;
fig. 5 is a front view of a temperature control layer of a grain storage simulation apparatus with precise temperature control according to embodiment 1 of the present invention;
fig. 6 is an expanded view of a longitudinal section of a temperature control layer of a grain storage simulation apparatus with precise temperature control according to embodiment 2 of the present invention;
fig. 7 is a longitudinal section development view of a temperature control layer of a grain storage simulation apparatus with precise temperature control according to embodiment 3 of the present invention.
Detailed Description
The present invention will be further explained with reference to the following examples and drawings.
The base material of the device of the utility model 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.
Grain storage analogue means embodiment 1 of accurate accuse temperature
As shown in fig. 1 to 5, the device comprises a bin body 1, a liquid refrigerant temperature control unit 2 and a gas control unit 3; the wall of the bin body 1 is provided with a temperature control layer 1-1 (with the length of 1.5m, the width of 1.0m and the height of 1.3 m) with the thickness of 1cm, the top of the bin body 1 is provided with a movable top cover 1-2, and the bottom of the bin body 1, the temperature control layer 1-1 and the movable top cover 1-2 are externally provided with heat preservation layers 1-3; the outer side of the lower end of the temperature control layer 1-1 is provided with a water inlet 1-1-1 which is connected with a water outlet 2-1 of the liquid refrigerant temperature control unit 2; the outer side of the upper end of the temperature control layer 1-1 is provided with a water outlet 1-1-2 and an overflow port 1-1-3 which are respectively connected with a water inlet 2-2 of the liquid refrigerant temperature control unit 2; the center of the inner side of the bottom of the bin body 1 is provided with an overground cage 1-4 (the length is 1m, the width is 0.4m, and the height is 0.26 m), the overground cage 1-4 is longitudinally connected with bin walls at two sides, the bin walls are provided with air inlets 1-1-4 communicated with the overground cage 1-4, and the air inlets 1-1-4 are connected with a nitrogen making device 3-1 and an extraction type fan 3-2 of a gas control unit 3 through a three-way pipe; the upper end of the bin body 1 is provided with an air outlet 1-5 which is connected with a nitrogen making device 3-1 of the gas control unit 3 and the outside atmosphere through a three-way pipe; the upper part in the bin body 1 is provided with a grain condition measuring and controlling machine 1-7, a nitrogen concentration detector 1-8 and an electronic hygrothermograph 1-9 which are connected with a measuring and controlling panel 1-6 outside the bin body 1; the grain condition measuring and controlling machine 1-7 is connected with temperature measuring cables 1-7-1 distributed in the bin body 1;
the temperature control layer 1-1 is of a hollow structure, and the temperature control layer 1-1 is divided into a closed flow guide channel from bottom to top by a flow guide mechanism 1-1-5; the water inlet 1-1-1, the water outlet 1-1-2 and the overflow port 1-1-3 on the outer side of the temperature control layer 1-1 are matched with the water inlet end and the water outlet end of the sealed flow guide channel; the overflow port 1-1-3 and the water outlet 1-1-2 are in the same flow guide area, and the overflow port 1-1-3 is 1-1-210 cm higher than the water outlet; the flow guide mechanisms 1-1-5 and the bottom surface of the bin body 1 form an angle of 5.0 degrees, the flow guide mechanisms spirally extend upwards in parallel in the temperature control layer 1-1 to reach the top end of the temperature control layer 1-1, and the relative vertical distances between the flow guide mechanisms 1-1-5 of adjacent layers are equal and are 43.2 cm; the thickness of the temperature control layer 1-1 is 10 mm; reinforcing ribs 1-1-6 are arranged outside two sides of the temperature control layer 1-1 and are fixed by screws 1-1-6-1; the reinforcing ribs 1-1-6 are arranged every 25cm in relative vertical distance, the reinforcing ribs 1-1-6 are hollow steel bars, the width of each reinforcing rib is 8cm, the thickness of each reinforcing rib is 2cm, each hollow steel bar is made of a 304 stainless steel plate with the thickness of 3mm, and polystyrene foam plastic plates are filled in the hollow steel bars; the fixed distance of the screw 1-1-6-1 is as follows: the wide side of the temperature control layer 1-1 is 33cm (2 reinforcing ribs 1-1-6 near the top of the bin) and 25cm (2 reinforcing ribs 1-1-6 near the bottom of the bin), and the long side of the temperature control layer 1-1 is 37.5cm (2 reinforcing ribs 1-1-6 near the top of the bin) and 30cm (2 reinforcing ribs 1-1-6 near the bottom of the bin);
the heat-insulating layer 1-3 is a detachable double-layer structure, the inner layer is a polystyrene foam plastic plate with the thickness of 4cm, the inner layer of the polystyrene foam plastic plate of the heat-insulating layer 1-3 of the bin wall is matched with the shape of the reinforcing rib 1-1-6, and the outer layer is a 304 stainless steel plate with the thickness of 3 mm; the upper end of the heat insulation layer 1-3 outside the temperature control layer 1-1 is provided with a buckle 1-3-3 matched with the outer side of the top end of the temperature control layer 1-1; an electric hydraulic push rod 1-2-1 connected with the bin wall of the bin body 1 is arranged on the inner side of the movable top cover 1-2; a polyurethane foam plastic strip 1-2-2 hermetically matched with the upper edge of the bin wall of the bin body 1 is arranged on the inner side of the movable top cover 1-2; the ground cages 1-4 are arc-shaped air nets, and the air nets are fully distributed with fish scale type air holes; the size of the ground cage 1-4 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 1-7-1 are hung from four corners and the center of the top of the bin body 1, each temperature measuring cable is provided with 3 temperature measuring points 1-7-1-1, wherein 1 temperature measuring point is positioned in the center of the grain pile, and the distance from the temperature measuring point 1-7-1-1 at the uppermost end and the temperature measuring point 1-7-1-1 at the lowermost end to the top end or the bin bottom of the grain pile is 0.15 m; the outer side of the bin body 1 is provided with a handle 1-10, and the bottom of the bin body 1 is provided with a land wheel 1-11; the connected pipelines are provided with ball valves 1-12;
the nitrogen making device 3-1 is formed by sequentially connecting an air compressor 3-1-1, an air purification assembly 3-1-2, a cold dryer 3-1-3 and a pressure swing adsorption tower 3-1-4; a water outlet 3-1-3-1 is arranged on the cold dryer 3-1-3; and a water pump 2-3, a temperature measuring device 2-4, a heating device 2-5, a refrigerating device 2-6 and a numerical control module 2-7 are arranged in the liquid refrigerant temperature control unit 2.
The utility model discloses the working process of device does: after the grain is filled in the bin body 1, the movable top cover 1-2 is closed, liquid refrigerant is injected into the temperature control layer 1-1 from a water inlet 1-1-1 on the outer side of the lower end of the temperature control layer 1-1 through the liquid refrigerant temperature control unit 2, the liquid refrigerant circulates in the temperature control layer 1-1 along a flow guide channel separated by a flow guide mechanism 1-1-5, and then returns to the liquid refrigerant temperature control unit 2 through a water outlet 1-1-2 on the outer side of the upper end of the temperature control layer 1-1 and an overflow port 1-1-3; the air control unit 3 sucks air out of the air inlet 1-1-4 formed in the bin wall and communicated with the ground upper cage 1-4 through the suction-type fan 3-2 or injects nitrogen into the bin wall through the nitrogen making device 3-1 through the air inlet 1-1-4 formed in the bin wall and communicated with the ground upper cage 1-4; meanwhile, the measurement and control panel 1-6 outside the bin body 1 controls or reads the numerical values on the grain condition measurement and control machine 1-7, the nitrogen concentration detector 1-8 and the electronic hygrothermograph 1-9.
Through detecting, the utility model discloses the device can regulate and control bulkhead temperature, carries out accurate accuse temperature to the storehouse body, and the design in aspects such as heat preservation, accuse temperature, samming makes its accuse temperature precision reach 0.1 ℃.
Grain storage analogue means embodiment 2 of accurate accuse temperature
The embodiment of the present invention is different from embodiment 1 only in that: as shown in fig. 6, the diversion mechanism 1-1-5 is parallel to the bottom surface of the bin body 1, the diversion mechanism 1-1-5 divides the temperature control layer 1-1 into 3 layers, 1 continuous and longitudinally S-shaped diversion mechanism 1-1-5 is arranged in the temperature control layer 1-1 at one side of the water inlet 1-1-1, the water outlet 1-1-2 and the overflow port 1-1-3, the arc outer sides of the uppermost end and the lowermost end of the S-shaped diversion mechanism 1-1-5 respectively face the water outlet 1-1-2 and the water inlet 1-1-1, the horizontal diversion mechanism 1-1-5 is connected with each arc outer side, and the horizontal diversion mechanism 1-1-5 is separated from each arc inner side by 20 cm; the upper and lower arcs of the S-shaped guide mechanism 1-1-5 are tangent, the radius of the arc is 0.60m, and the angle of the arc is 66.0 degrees. The same as in example 1.
Through detecting, the utility model discloses the device can regulate and control bulkhead temperature, carries out accurate accuse temperature to the storehouse body, and the design in aspects such as heat preservation, accuse temperature, samming makes its accuse temperature precision reach 0.1 ℃.
Grain storage analogue means embodiment 3 of accurate accuse temperature
The embodiment of the present invention is different from embodiment 1 only in that: as shown in figure 7, the flow guide mechanisms 1-1-5 of the adjacent layers in the temperature control layer 1-1 at one side provided with the water inlet 1-1-1, the water outlet 1-1-2 and the overflow port 1-1-3 are parallel to each other and form 23.4 degrees with the bottom surface of the bin body 1, the vertical distances between the flow guide mechanisms 1-1-5 of the adjacent layers are equal and 39.8cm, and the flow guide mechanisms of the other three sides in the temperature control layer 1-1 extend parallel to the bottom surface of the bin body 1. The same as in example 1.
Through detecting, the utility model discloses the device can regulate and control bulkhead temperature, carries out accurate accuse temperature to the storehouse body, and the design in aspects such as heat preservation, accuse temperature, samming makes its accuse temperature precision reach 0.1 ℃.
Claims (9)
1. The utility model provides a grain storage analogue means of accurate accuse temperature which characterized in that: comprises a bin body, a liquid refrigerant temperature control unit and a gas control unit; the bin wall of the bin body is provided with a temperature control layer, the top of the bin body is provided with a movable top cover, and heat preservation layers are arranged at the bottom of the bin body, the temperature control layer and an interlayer of the movable top cover; the outer side of the lower end of the temperature control layer is provided with a water inlet which is connected with a water outlet of the liquid refrigerant temperature control unit; the outer side of the upper end of the temperature control layer is provided with a water outlet and an overflow port which are respectively connected with a water inlet of the liquid refrigerant temperature control unit; an overground cage is arranged in the center of the inner side of the bottom of the bin body, the overground cage is longitudinally connected with bin walls on two sides, an air inlet communicated with the overground cage is arranged on the bin walls, and the air inlet is connected with a nitrogen making device and a ventilation device of the air control unit; the upper end of the bin body is provided with an air outlet which is connected with a nitrogen making device of the air control unit; the upper part in the bin body is provided with a grain condition measuring and controlling machine, a nitrogen concentration detector and an electronic hygrothermograph which are connected with a measuring and controlling panel outside the bin body; the grain condition measuring and controlling machine is connected with temperature measuring cables distributed in the bin body.
2. The grain storage simulation device with 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; 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; the overflow port and the water outlet are in the same flow guiding area, and the height of the overflow port higher than the water outlet is more than or equal to 6 cm.
3. The grain storage simulation device with accurate temperature control according to claim 2, wherein: 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 longitudinally S-shaped flow guide mechanisms are further arranged in the temperature control layer on one side provided with the water inlet, the water outlet and the overflow opening, the arc outer sides of the uppermost end and the lowermost end of the 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, and the horizontal flow guide mechanism is 9-30 cm away from the arc inner sides; the upper and lower arcs of the S-shaped flow guide mechanism are tangent, the arc radius is 0.4-0.8 m, and the arc angle is 60-70 degrees;
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 angle 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 device with the accurate temperature control function according to any one of claims 1 to 3, wherein: the thickness of the temperature control layer is 9-11 mm; reinforcing ribs are arranged outside the two sides of the temperature control layer and are fixed by screws; the reinforcing ribs are arranged one by one at every 20-30 cm of the relative vertical distance; the reinforcing ribs are hollow steel bars, the width of each reinforcing rib is 6-10 cm, and the thickness of each reinforcing rib is 1-3 cm; the distance for fixing the screws is 20-40 cm.
5. The grain storage simulation device with the accurate temperature control function according to any one of claims 1 to 3, wherein: 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; a handle is arranged on the outer side of the bin body, and a land wheel is arranged at the bottom of the bin body; ball valves are arranged on the connected pipelines.
6. The grain storage simulation device with accurate temperature control according to claim 4, wherein: 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; a handle is arranged on the outer side of the bin body, and a land wheel is arranged at the bottom of the bin body; ball valves are arranged on the connected pipelines.
7. The grain storage simulation device with the accurate temperature control function according to any one of claims 1 to 3, wherein: the nitrogen making device is sequentially connected with an air compressor, an air purification assembly, a cold dryer and a pressure swing adsorption tower; a water outlet is arranged on the cold dryer; the ventilation device is a suction type fan; and a water pump, a temperature measuring device, a heating device, a refrigerating device and a numerical control module are arranged in the liquid refrigerant temperature control unit.
8. The grain storage simulation device with accurate temperature control according to claim 4, wherein: the nitrogen making device is sequentially connected with an air compressor, an air purification assembly, a cold dryer and a pressure swing adsorption tower; a water outlet is arranged on the cold dryer; the ventilation device is a suction type fan; and a water pump, a temperature measuring device, a heating device, a refrigerating device and a numerical control module are arranged in the liquid refrigerant temperature control unit.
9. The grain storage simulation device with accurate temperature control according to claim 5, wherein: the nitrogen making device is sequentially connected with an air compressor, an air purification assembly, a cold dryer and a pressure swing adsorption tower; a water outlet is arranged on the cold dryer; the ventilation device is a suction type fan; and a water pump, a temperature measuring device, a heating device, a refrigerating device and a numerical control module are arranged in the liquid refrigerant temperature control unit.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922137039.9U CN211406901U (en) | 2019-12-03 | 2019-12-03 | Grain storage analogue means of accurate accuse temperature |
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| CN201922137039.9U CN211406901U (en) | 2019-12-03 | 2019-12-03 | Grain storage analogue means of accurate accuse temperature |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110959387A (en) * | 2019-12-03 | 2020-04-07 | 湖南粮食集团有限责任公司 | Grain storage simulation device and method with accurate temperature control function |
| CN116784109A (en) * | 2023-08-24 | 2023-09-22 | 滨州市农业科学院 | Seed storage equipment |
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2019
- 2019-12-03 CN CN201922137039.9U patent/CN211406901U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110959387A (en) * | 2019-12-03 | 2020-04-07 | 湖南粮食集团有限责任公司 | Grain storage simulation device and method with accurate temperature control function |
| CN110959387B (en) * | 2019-12-03 | 2024-07-16 | 中南粮油食品科学研究院有限公司 | Grain storage simulation device and method with accurate temperature control |
| CN116784109A (en) * | 2023-08-24 | 2023-09-22 | 滨州市农业科学院 | Seed storage equipment |
| CN116784109B (en) * | 2023-08-24 | 2023-11-07 | 滨州市农业科学院 | Seed storage equipment |
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Effective date of registration: 20230714 Address after: No. 1119, Furong North Road, Kaifu District, Changsha City, Hunan Province Patentee after: ZHONGNAN GRAIN AND OIL FOOD SCIENCE RESEARCH INSTITUTE CO.,LTD. Address before: No. 1119, Furong North Road, Kaifu District, Changsha City, Hunan Province Patentee before: HUNAN GRAIN Group LLC Patentee before: ZHONGNAN GRAIN AND OIL FOOD SCIENCE RESEARCH INSTITUTE CO.,LTD. |