CN105432262A - Natural low-temperature barn and grain storage method thereof - Google Patents
Natural low-temperature barn and grain storage method thereof Download PDFInfo
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- CN105432262A CN105432262A CN201510896862.1A CN201510896862A CN105432262A CN 105432262 A CN105432262 A CN 105432262A CN 201510896862 A CN201510896862 A CN 201510896862A CN 105432262 A CN105432262 A CN 105432262A
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- temperature
- grain
- temperature sensor
- blower fan
- air
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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
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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
- A01F25/16—Arrangements in forage silos
- A01F25/22—Ventilating arrangements
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D27/00—Simultaneous control of variables covered by two or more of main groups G05D1/00 - G05D25/00
- G05D27/02—Simultaneous control of variables covered by two or more of main groups G05D1/00 - G05D25/00 characterised by the use of electric means
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- Life Sciences & Earth Sciences (AREA)
- Environmental Sciences (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Storage Of Harvested Produce (AREA)
Abstract
The invention discloses a natural low-temperature barn. The barn comprises a barn body, a ventilation window, an air inlet, ventilation pipelines, a circulating pipeline, a third fan, refrigeration equipment, multiple first temperature sensors, multiple humidity sensors, multiple second temperature sensors and meteorological monitoring equipment. The ventilation window is formed in the upper surface of the barn body, the air inlet is formed in the lower surface of the barn body, the ventilation pipelines are buried inside grain stacks, and the first ends of the ventilation pipelines are communicated with the air inlet, wherein a first fan is arranged inside the ventilation window and used for exhausting air inside space above the grain stacks to the external environment and/or a second fan is arranged inside the air inlet and used for introducing air in the external environment into the grain stacks; the air inlet end of the circulating pipeline is also communicated with the first ends of the ventilation pipelines, and the third fan is arranged inside the circulating pipeline. The invention further discloses a grain storage method of the natural low-temperature barn. Energy is saved, the refrigeration effect is good, and temperature distribution is even.
Description
Technical field
The present invention relates to low-temperature grain-storage correlative technology field.More particularly, the present invention relates to a kind of Temperature Storage of Grain and storing grain method thereof.
Background technology
At present, in food storage process, the cool-down method often adopted is air-conditioning temperature-reducing.But it is convenient that this method advantage is cooling, and cooling rate is fast, and shortcoming is that power consumption is huge, operating cost is too high, makes many grain depots to bear.Some grain depot also adopts gravity-flow ventilation to reduce the temperature in silo, this method has the advantage of conserve energy, but refrigeration is poor, and cold air is not easy to be evenly distributed, and adopt gravity-flow ventilation cooling to be also easily subject to the impact of seasonal variation, very unstable.Therefore, need design one badly and can make full use of natural low temperature, and have again stronger refrigeration, freeze uniform silo and storing grain method.
Summary of the invention
An object of the present invention is to provide a kind of Temperature Storage of Grain, it directly reequips on traditional silo, and cost is low, natural low temperature and refrigeration plant is combined, economize energy, good refrigeration effect, uniformity of temperature profile.
An object of the present invention is to provide a kind of storing grain method of Temperature Storage of Grain, it is according to the temperature of the inner each position of the temperature of external environment condition and silo, and change the mode of operation of Temperature Storage of Grain, the method has economize energy, good refrigeration effect, the advantage of uniformity of temperature profile.
In order to realize, according to these objects of the present invention and other advantage, providing a kind of Temperature Storage of Grain, comprising:
Silo body, its inside is stacked with grain heap;
Vent window, air inlet and ventilation shaft, described vent window is opened in the upper face of described silo body, the sash can opening or close described vent window is provided with in described vent window, described air inlet is opened in the lower surface of described silo body, the air door can opening or close described air inlet is provided with in described air inlet, described ventilation shaft is embedded in grain heap, and the first end of described ventilation shaft is communicated with described air inlet; Wherein, be provided with in described vent window for by grain, the air piled in superjacent air space drains in the first blower fan of external environment condition and/or described air inlet and is provided with for the air in external environment condition being introduced the second inner blower fan of grain heap;
Circulating line and the 3rd blower fan, the outlet side of described circulating line is stretched into described silo body and is positioned at grain heap superjacent air space, the inlet end of described circulating line is also communicated to the first end of described ventilation shaft, described 3rd blower fan is arranged in described circulating line, for air inner for grain heap is introduced grain heap superjacent air space;
Refrigeration plant, its gas outlet is positioned at grain heap superjacent air space;
Multiple first temperature sensor, multiple humidity sensor, multiple second temperature sensor and weather monitoring device, described first temperature sensor is arranged at grain heap superjacent air space, for detecting the temperature of grain heap superjacent air space, described multiple humidity sensor is arranged at grain heap superjacent air space, for detecting the humidity of grain heap superjacent air space, it is inner that described second temperature sensor is distributed in grain heap, for detecting grain heap internal temperature, described weather monitoring device is arranged at described silo body exterior, for detecting the temperature and humidity of silo body exterior environment.
Preferably, described Temperature Storage of Grain, described Temperature Storage of Grain is at least in the first mode of operation, switch between the second mode of operation and the 3rd mode of operation, wherein, in this first operative mode, described sash, described air door, described first blower fan and/or described second blower fan are opened, and reduce grain heap internal temperature by the cold air introduced in external environment condition; Under described second mode of operation, described 3rd blower fan is opened, described first blower fan, described second blower fan closedown, and described sash and described air door are closed, and are balanced the temperature of grain heap inside and grain heap superjacent air space by the circulation of the air of grain heap inside; Under described 3rd mode of operation, described refrigeration plant and described 3rd blower fan are opened, described first blower fan, described second blower fan are closed, and described sash and described air door are closed, and the cold air produced by refrigeration plant reduces the temperature of grain heap inside and grain heap superjacent air space.
Preferably, described Temperature Storage of Grain, the second end of described ventilation shaft is closed, and the tube wall of described ventilation shaft evenly offers multiple fish scale hole; Described ventilation shaft be also connected with multiple branch vent, the free end of described branch vent is closed, and the tube wall of described branch vent evenly offers multiple fish scale hole.
Preferably, described Temperature Storage of Grain, the outer surface of described silo body, described circulating line outer surface, the outer surface of described sash and the outer surface of described air door all scribble heat-insulation layer.
Preferably, described Temperature Storage of Grain, described multiple first temperature sensor is set in qually spaced in the top of described silo body, described multiple second temperature sensor is divided into many groups, each is organized the second temperature sensor and all arranges along vertical spacing such as the short transverses of the internal side wall of described silo body, and the level interval of two adjacent groups second temperature sensor is equal.
Preferably, described Temperature Storage of Grain, also comprises:
Controller, it is all connected with described sash, described air door, described first blower fan and/or described second blower fan, described 3rd blower fan, described refrigeration plant, described humidity sensor, described first temperature sensor, described second temperature sensor, described weather monitoring device, to realize described Temperature Storage of Grain at least in the first mode of operation, switch between the second mode of operation and the 3rd mode of operation.
A storing grain method for Temperature Storage of Grain, comprising:
When the temperature of external environment condition is lower than first threshold, and be less than Second Threshold with the difference of silo mean temperature, and the humidity of external environment condition is when being more than or equal to silo interior humidity, described sash, described air door, described first blower fan and/or described second blower fan are opened, make the circulation of natural low temperature air and silo body interior air to reduce the temperature of grain heap, described Temperature Storage of Grain is in the first mode of operation;
When grain piles inner maximum temperature difference higher than the 3rd threshold value, described 3rd blower fan is opened, and the circulation of piling the air of inside of the air and the grain that make grain pile superjacent air space is to balance grain and pile and the temperature of superjacent air space piled by grain, and described Temperature Storage of Grain is in the second mode of operation;
When grain heap mean temperature is higher than the 4th threshold value, and the temperature of external environment condition higher than the 5th threshold value time, described 3rd blower fan and described refrigeration plant are opened, and make refrigeration plant produce cold air to reduce the temperature of grain heap inside and grain heap superjacent air space, described Temperature Storage of Grain is in the 3rd mode of operation;
Wherein, described silo mean temperature is the mean value of the temperature that all first temperature sensors and all second temperature sensors detect, the maximum difference that inner maximum temperature difference is the temperature that each second temperature sensor detects piled by described grain, and described grain heap mean temperature is the mean value of the temperature that all second temperature sensors detect;
Wherein, described 5th threshold value is greater than described 4th threshold value, and described 4th threshold value is greater than described first threshold, and described Second Threshold is less than the difference of described silo mean temperature and atmospheric dew point temperature.
Preferably, the storing grain method of described Temperature Storage of Grain, described first threshold is 16 DEG C, and described Second Threshold is 3 DEG C, and described 3rd threshold value is 3 DEG C, and described 4th threshold value is 18 DEG C, and described 5th threshold value is 25 DEG C.Preferably, the storing grain method of described Temperature Storage of Grain, described controller scans the first coupled temperature sensor and the second temperature sensor to obtain the temperature of silo body interior each position;
When the temperature of external environment condition is higher than 25 DEG C, described controller is with first frequency each first temperature sensor of scanning and each second temperature sensor; When the temperature of external environment condition is higher than 28 DEG C, described controller is with second frequency each first temperature sensor of scanning and each second temperature sensor; When the temperature of external environment condition is higher than 31 DEG C, described controller is with each first temperature sensor of the 3rd frequency scanning and each second temperature sensor; When the temperature of external environment condition is higher than 33 DEG C, described controller is with each first temperature sensor of the 4th frequency scanning and each second temperature sensor;
Wherein, described 4th frequency is greater than described 3rd frequency, and described 3rd frequency is greater than described second frequency, and described second frequency is greater than described first frequency.
Preferably, the storing grain method of described Temperature Storage of Grain, described controller with coupled the second temperature sensor of the 5th frequency scanning to obtain the temperature that inner each position piled by grain;
The maximum difference of the temperature detected in each moment when any one second temperature sensor within the scope of setting-up time is less than the first critical value, and described controller is with this second temperature sensor of the 6th frequency scanning; The maximum difference of the temperature detected in each moment when any one second temperature sensor within the scope of setting-up time is greater than the second critical value, and described controller is with this second temperature sensor of the 7th frequency scanning;
Wherein, described first critical value is less than described second critical value, and described 6th frequency is less than described 5th frequency, and described 7th frequency is greater than described 5th frequency.
The present invention at least comprises following beneficial effect:
(1) Temperature Storage of Grain of the present invention directly can carry out repacking and obtains on traditional silo, has greatly saved cost.
(2) the present invention can make full use of natural low temperature to reduce grain heap internal temperature, and the service time of refrigeration plant is short, has greatly saved the energy.
(3) the present invention can change the mode of operation of Temperature Storage of Grain in time according to the temperature of the inner each position of the temperature of external environment condition and silo, and the method has economize energy, good refrigeration effect, the advantage of uniformity of temperature profile.
Part is embodied by explanation below by other advantage of the present invention, target and feature, part also will by research and practice of the present invention by those skilled in the art is understood.
Accompanying drawing explanation
Fig. 1 is the structural representation of Temperature Storage of Grain of the present invention;
Fig. 2 is the distribution map of the second temperature sensor of the present invention;
Fig. 3 is the schematic diagram of ventilation shaft of the present invention.
Embodiment
Below in conjunction with accompanying drawing, the present invention is described in further detail, can implement according to this with reference to specification word to make those skilled in the art.
Should be appreciated that used hereinly such as " to have ", other element one or more do not allotted in " comprising " and " comprising " term or the existence of its combination or interpolation.
As shown in Figure 1,2 and 3, the invention provides a kind of Temperature Storage of Grain, comprising:
Silo body 1, its inside is stacked with grain heap 2;
Vent window 8, air inlet and ventilation shaft 5, described vent window 8 is opened in the upper face of described silo body, the sash can opening or close described vent window 8 is provided with in described vent window 8, described air inlet is opened in the lower surface of described silo body 1, the air door can opening or close described air inlet is provided with in described air inlet, described ventilation shaft 5 is embedded in grain heap, and the first end of described ventilation shaft 5 is communicated with described air inlet; Wherein, be provided with in described vent window 8 for by grain, the air piled in superjacent air space drains in the first blower fan of external environment condition and/or described air inlet and is provided with for the air in external environment condition being introduced the second inner blower fan 4 of grain heap;
Circulating line 6 and the 3rd blower fan 7, the outlet side of described circulating line 6 is stretched into described silo body 1 and is positioned at grain heap superjacent air space, the inlet end of described circulating line 6 is also communicated to the first end of described ventilation shaft 5, described 3rd blower fan 7 is arranged in described circulating line 6, for air inner for grain heap is introduced grain heap superjacent air space;
Refrigeration plant 9, its gas outlet is positioned at grain heap superjacent air space;
Multiple first temperature sensor, multiple humidity sensor, multiple second temperature sensor and weather monitoring device, described first temperature sensor is arranged at grain heap superjacent air space 3, for detecting the temperature of grain heap superjacent air space, described multiple humidity sensor is arranged at grain heap superjacent air space, for detecting the humidity of grain heap superjacent air space 3, it is inner that described second temperature sensor is distributed in grain heap, for detecting grain heap internal temperature, described weather monitoring device is arranged at described silo body exterior, for detecting the temperature and humidity of silo body exterior environment.
In technique scheme, silo body 1 can be similar with traditional silo shape, and main body is square, has arc top, and silo body 1 inside is stacked with grain heap, and the space between grain heap top and silo is that superjacent air space 3 piled by grain.Ventilation shaft 5 is buried in grain heap, and ventilation shaft 5 needs to pile inside with grain and carries out gas exchanges, the ventilation shaft 5 but grain can not bleed.First blower fan is arranged in vent window 8, discharges silo for the hotter air piled by grain in superjacent air space.Second blower fan 4 is arranged on air inlet, for being introduced by cold air in external environment condition in grain heap inside.First blower fan and the second blower fan can optional settings, also can arrange simultaneously, its object is all the circulation in order to realize the air in silo and the cold air in external environment condition, introduces grain heap inner by natural low temperature, utilizes natural low temperature to reduce grain heap internal temperature.Circulating line 6 and the 3rd blower fan 7 are for realizing the circulation of silo inner air, and circulating line 6 is also communicated with ventilation shaft 5, and utilize the 3rd blower fan 7 that air inner for grain heap is introduced grain heap superjacent air space 3, thus make silo various places inside temperature, humidity even.Refrigeration plant 9 can be air-conditioning, for providing cold air to grain heap superjacent air space 3.Can find out, technique scheme according to external environment condition and silo internal environment, can use natural low temperature or uses silo inner loop or use refrigeration plant 9 to carry out grain storage.In addition, vent window 8, ventilation shaft 5, first blower fan, the second blower fan, circulating line 6 and the 3rd blower fan 7, refrigeration plant 9 can carry out increase and decrease quantity, to adapt to various situation according to factors such as silo size, regional climates.
In another kind of example, described Temperature Storage of Grain, described Temperature Storage of Grain is at least in the first mode of operation, switch between the second mode of operation and the 3rd mode of operation, wherein, in this first operative mode, described sash, described air door, described first blower fan and/or described second blower fan are opened, and reduce grain heap internal temperature by the cold air introduced in external environment condition; Under described second mode of operation, described 3rd blower fan is opened, described first blower fan, described second blower fan closedown, and described sash and described air door are closed, and are balanced the temperature of grain heap inside and grain heap superjacent air space by the circulation of the air of grain heap inside; Under described 3rd mode of operation, described refrigeration plant and described 3rd blower fan are opened, described first blower fan, described second blower fan are closed, and described sash and described air door are closed, and the cold air produced by refrigeration plant reduces the temperature of grain heap inside and grain heap superjacent air space.Here there is provided three kinds of mode of operations of Temperature Storage of Grain.In a first operation mode, open vent window 8 and the first blower fan or vent window and the second blower fan or vent window and the first blower fan and the second blower fan, by grain, the hot-air piled in upper space drains into external environment condition and/or the second blower fan 4 cold air in external environment condition to be sucked grain heap inner first blower fan, thus realize the circulation of silo extraneous air and silo inner air, namely make full use of natural low temperature.In the second operation mode, only open the 3rd blower fan 7, and close sash and silo is closed by air door, carry out grain heap superjacent air space 3 and the inner gas circulation of grain heap, namely realize silo inner loop.In the third mode of operation, unlatching refrigeration plant 9 and the 3rd blower fan 7, and close sash and silo is closed by air door, refrigeration plant 9 manufactures cold air at grain heap superjacent air space 3, and utilize the 3rd blower fan 7 to make grain heap superjacent air space 3 and grain heap inside carry out gas circulation, namely make full use of refrigeration plant 9 and freeze.Can find out, this Three models constantly switches fully can adapt to extraneous meteorological change, no matter and under that mode of operation, the gas of silo inside can fully circulate, and makes the uniformity of temperature profile of each several part in silo.
In another kind of example, described Temperature Storage of Grain, the second end of described ventilation shaft 5 is closed, and the tube wall of described ventilation shaft 5 evenly offers multiple fish scale hole; Described ventilation shaft be also connected with multiple branch vent 51, the free end of described branch vent 51 is closed, and the tube wall of described branch vent 51 evenly offers multiple fish scale hole.As shown in Figure 3, the bottom of 102 expression silo bodies, provide a kind of a kind of structure of ventilation shaft 5, fish scale hole needs to realize ventilation does not make again grain enter ventilation shaft, during the existence of branch vent can make grain pile, each several part all can participate in gas circulation, make grain pile inner each several part Temperature Distribution evenly.
In another example, described Temperature Storage of Grain, the outer surface of described silo body 1, described circulating line outer surface, the outer surface of described sash and the outer surface of described air door all scribble heat-insulation layer.Here namely heat-insulation layer is the insulation in order to realize silo, avoids cold to leak, causes energy loss
In another kind of example, described Temperature Storage of Grain, described multiple first temperature sensor 10 is set in qually spaced in the top of described silo body 1, described multiple second temperature sensor 11 is divided into many groups, each is organized the second temperature sensor 11 and all arranges along vertical spacing such as the short transverses of the internal side wall of described silo body 1, and the level interval of two adjacent groups second temperature sensor 11 is equal.As shown in Figure 2,101 represent silo body inwall, provide a kind of preferred distribution mode of the first temperature sensor 10, second temperature sensor 11, thus the temperature of the inner each position of silo can be detected, enable silo carry out the switching of mode of operation exactly.
In another kind of example, described Temperature Storage of Grain, also comprises:
Controller 13, it is all connected with described sash, described air door, described first blower fan and/or described second blower fan 4, the 3rd blower fan 7, described refrigeration plant 9, described first temperature sensor 10, described second temperature sensor 11, described humidity sensor, described weather monitoring device 12, to realize described Temperature Storage of Grain at least in the first mode of operation, switch between the second mode of operation and the 3rd mode of operation.Here, sash and air door can adopt electronic, thus can realize mode of operation switching automatically, exactly with controller 13.
A storing grain method for Temperature Storage of Grain, comprising:
When the temperature of external environment condition is lower than first threshold, and be less than Second Threshold with the difference of silo mean temperature, and the humidity of external environment condition is when being more than or equal to silo interior humidity, described sash, described air door, described first blower fan and/or described second blower fan are opened, make the circulation of natural low temperature air and silo body interior air to reduce the temperature of grain heap, described Temperature Storage of Grain is in the first mode of operation, finally makes grain pile mean temperature close to 0 DEG C;
When grain piles inner maximum temperature difference higher than the 3rd threshold value, described 3rd blower fan is opened, the circulation of piling the air of inside of the air and the grain that make grain pile superjacent air space is to balance grain and pile and the temperature of superjacent air space piled by grain, described Temperature Storage of Grain is in the second mode of operation, finally makes grain pile the temperature of interior point equal or close to equal;
When grain heap mean temperature is higher than the 4th threshold value, and the temperature of external environment condition higher than the 5th threshold value time, described 3rd blower fan and described refrigeration plant are opened, refrigeration plant is made to produce cold air to reduce the temperature of grain heap inside and grain heap superjacent air space, described Temperature Storage of Grain is in the 3rd mode of operation, until grain heap mean temperature is lower than the 6th threshold value;
Wherein, described silo mean temperature is the mean value of the temperature that all first temperature sensors and all second temperature sensors detect, the maximum difference that inner maximum temperature difference is the temperature that each second temperature sensor detects piled by described grain, and described grain heap mean temperature is the mean value of the temperature that all second temperature sensors detect;
Wherein, described 5th threshold value is greater than described 4th threshold value, and described 4th threshold value is greater than described first threshold, and described Second Threshold is less than the difference of described silo mean temperature and atmospheric dew point temperature.
Here, provide and use Temperature Storage of Grain to carry out the method for grain storage, namely according to the temperature of external environment condition, humidity and silo internal temperature, humidity factor, utilize the switching of three kinds of mode of operations to carry out grain storage, ensure that silo internal environment is beneficial to food storage.Here, first threshold, Second Threshold, the 3rd threshold value, the 4th threshold value, the 5th threshold value and the 6th threshold value all according to on-site weather setting and can adjust, to ensure stored grain safety.
In another kind of example, the storing grain method of described Temperature Storage of Grain, described first threshold is 16 DEG C, and described Second Threshold is 3 DEG C, and described 3rd threshold value is 3 DEG C, and described 4th threshold value is 18 DEG C, and described 5th threshold value is 25 DEG C.This provide the preferred value of a threshold value, Second Threshold, the 3rd threshold value, the 4th threshold value and the 5th threshold value.
In another kind of example, the storing grain method of described Temperature Storage of Grain, described controller 13 scans the first coupled temperature sensor 10 and the second temperature sensor 11 to obtain the temperature of the inner each position of silo body 1;
When the temperature of external environment condition is higher than 25 DEG C, described controller 13 is with first frequency each first temperature sensor 10 of scanning and each second temperature sensor 11; When the temperature of external environment condition is higher than 28 DEG C, described controller 13 is with second frequency each first temperature sensor 10 of scanning and each second temperature sensor 11; When the temperature of external environment condition is higher than 31 DEG C, described controller 13 is with each first temperature sensor 10 of the 3rd frequency scanning and each second temperature sensor 11; When the temperature of external environment condition is higher than 33 DEG C, described controller 13 is with each first temperature sensor 10 of the 4th frequency scanning and each second temperature sensor 11;
Wherein, described 4th frequency is greater than described 3rd frequency, and described 3rd frequency is greater than described second frequency, and described second frequency is greater than described first frequency.Here, controller 13 scans the first temperature sensor 10, second temperature sensor 11 to obtain temperature value, facilitates controller 13 to control Temperature Storage of Grain in the first mode of operation, switch between the second mode of operation and the 3rd mode of operation according to temperature value.When ambient temperature is very high, harmful effect may be caused to the grain in silo.In order to make grain storage process safer, progressively increasing scan frequency when the ambient temperature that weather monitoring device 12 detects raises, to make the switching of controller 13 pairs of mode of operations more accurate, providing the safety of grain storage, reducing unexpected generation.Here the first scan frequency can be 50 times/second, and the second scan frequency can be 80 times/second, and the 3rd scan frequency can be 100 times/second, and the 4th scan frequency can be 120 times/second.
In another kind of example, the storing grain method of described Temperature Storage of Grain, described controller 13 with coupled the second temperature sensor 11 of the 5th frequency scanning to obtain the temperature that inner each position piled by grain;
The maximum difference of the temperature detected in each moment when any one second temperature sensor 11 within the scope of setting-up time is less than the first critical value, and described controller 13 is with this second temperature sensor 11 of the 6th frequency scanning; The maximum difference of the temperature detected in each moment when any one second temperature sensor 11 within the scope of setting-up time is greater than the second critical value, and described controller 13 is with this second temperature sensor 11 of the 7th frequency scanning;
Wherein, described first critical value is less than described second critical value, and described 6th frequency is less than described 5th frequency, and described 7th frequency is greater than described 5th frequency.Here, controller 13 scans the second temperature sensor 11 to obtain temperature, thus switches the mode of operation of silo.When within a period of time, the temperature value difference that second temperature sensor 11 detects is very little, when being namely less than the first critical value, namely scan frequency is reduced, slow acquisition temperature, save electric energy, when within a period of time, the temperature value that second temperature sensor 11 detects differs greatly, and when being namely greater than the second critical value, shows that grain heap internal environment is just in acute variation, at this moment just need to obtain more temperature, at this moment just must increase scan frequency, facilitate the timely switching of controller 13 pairs of mode of operations, ensure stored grain safety.Here the first critical value can be 0.3 DEG C, and the second critical value is 3 DEG C, and the 5th scan frequency can be 100 times/second, and the 6th scan frequency can be 80 times/second, and the 7th scan frequency can be 150 times/second.
Although embodiment of the present invention are open as above, but it is not restricted to listed in specification and embodiment utilization, it can be applied to various applicable the field of the invention completely, for those skilled in the art, can easily realize other amendment, therefore do not deviating under the universal that claim and equivalency range limit, the present invention is not limited to specific details and illustrates here and the legend described.
Claims (10)
1. a Temperature Storage of Grain, is characterized in that, comprising:
Silo body, its inside is stacked with grain heap;
Vent window, air inlet and ventilation shaft, described vent window is opened in the upper face of described silo body, the sash can opening or close described vent window is provided with in described vent window, described air inlet is opened in the lower surface of described silo body, the air door can opening or close described air inlet is provided with in described air inlet, described ventilation shaft is embedded in grain heap, and the first end of described ventilation shaft is communicated with described air inlet; Wherein, be provided with in described vent window for by grain, the air piled in superjacent air space drains in the first blower fan of external environment condition and/or described air inlet and is provided with for the air in external environment condition being introduced the second inner blower fan of grain heap;
Circulating line and the 3rd blower fan, the outlet side of described circulating line is stretched into described silo body and is positioned at grain heap superjacent air space, the inlet end of described circulating line is also communicated to the first end of described ventilation shaft, described 3rd blower fan is arranged in described circulating line, for air inner for grain heap is introduced grain heap superjacent air space;
Refrigeration plant, its gas outlet is positioned at grain heap superjacent air space;
Multiple first temperature sensor, multiple humidity sensor, multiple second temperature sensor and weather monitoring device, described first temperature sensor is arranged at grain heap superjacent air space, for detecting the temperature of grain heap superjacent air space, described multiple humidity sensor is arranged at grain heap superjacent air space, for detecting the humidity of grain heap superjacent air space, it is inner that described second temperature sensor is distributed in grain heap, for detecting grain heap internal temperature, described weather monitoring device is arranged at described silo body exterior, for detecting the temperature and humidity of silo body exterior environment.
2. Temperature Storage of Grain as claimed in claim 1, it is characterized in that, described Temperature Storage of Grain is at least in the first mode of operation, switch between the second mode of operation and the 3rd mode of operation, wherein, in this first operative mode, described sash, described air door, described first blower fan and/or described second blower fan are opened, and reduce grain heap internal temperature by the cold air introduced in external environment condition; Under described second mode of operation, described 3rd blower fan is opened, described first blower fan, described second blower fan closedown, and described sash and described air door are closed, and are balanced the temperature of grain heap inside and grain heap superjacent air space by the circulation of the air of grain heap inside; Under described 3rd mode of operation, described refrigeration plant and described 3rd blower fan are opened, described first blower fan, described second blower fan are closed, and described sash and described air door are closed, and the cold air produced by refrigeration plant reduces the temperature of grain heap inside and grain heap superjacent air space.
3. Temperature Storage of Grain as claimed in claim 1, it is characterized in that, the second end of described ventilation shaft is closed, and the tube wall of described ventilation shaft evenly offers multiple fish scale hole; Described ventilation shaft be also connected with multiple branch vent, the free end of described branch vent is closed, and the tube wall of described branch vent evenly offers multiple fish scale hole.
4. Temperature Storage of Grain as claimed in claim 1, it is characterized in that, the outer surface of described silo body, described circulating line outer surface, the outer surface of described sash and the outer surface of described air door all scribble heat-insulation layer.
5. Temperature Storage of Grain as claimed in claim 1, it is characterized in that, described multiple first temperature sensor is set in qually spaced in the top of described silo body, described multiple second temperature sensor is divided into many groups, each is organized the second temperature sensor and all arranges along vertical spacing such as the short transverses of the internal side wall of described silo body, and the level interval of two adjacent groups second temperature sensor is equal.
6. Temperature Storage of Grain as claimed in claim 2, is characterized in that, also comprise:
Controller, it is all connected with described sash, described air door, described first blower fan and/or described second blower fan, described 3rd blower fan, described refrigeration plant, described humidity sensor, described first temperature sensor, described second temperature sensor, described weather monitoring device, to realize described Temperature Storage of Grain at least in the first mode of operation, switch between the second mode of operation and the 3rd mode of operation.
7. a storing grain method for Temperature Storage of Grain as claimed in claim 6, is characterized in that, comprising:
When the temperature of external environment condition is lower than first threshold, and be less than Second Threshold with the difference of silo mean temperature, and the humidity of external environment condition is when being more than or equal to silo interior humidity, described sash, described air door, described first blower fan and/or described second blower fan are opened, make the circulation of natural low temperature air and silo body interior air to reduce the temperature of grain heap, described Temperature Storage of Grain is in the first mode of operation;
When grain piles inner maximum temperature difference higher than the 3rd threshold value, described 3rd blower fan is opened, and the circulation of piling the air of inside of the air and the grain that make grain pile superjacent air space is to balance grain and pile and the temperature of superjacent air space piled by grain, and described Temperature Storage of Grain is in the second mode of operation;
When grain heap mean temperature is higher than the 4th threshold value, and the temperature of external environment condition higher than the 5th threshold value time, described 3rd blower fan and described refrigeration plant are opened, and make refrigeration plant produce cold air to reduce the temperature of grain heap inside and grain heap superjacent air space, described Temperature Storage of Grain is in the 3rd mode of operation;
Wherein, described silo mean temperature is the mean value of the temperature that all first temperature sensors and all second temperature sensors detect, the maximum difference that inner maximum temperature difference is the temperature that each second temperature sensor detects piled by described grain, and described grain heap mean temperature is the mean value of the temperature that all second temperature sensors detect;
Wherein, described 5th threshold value is greater than described 4th threshold value, and described 4th threshold value is greater than described first threshold, and described Second Threshold is less than the difference of described silo mean temperature and atmospheric dew point temperature.
8. the storing grain method of Temperature Storage of Grain as claimed in claim 7, it is characterized in that, described first threshold is 16 DEG C, and described Second Threshold is 3 DEG C, and described 3rd threshold value is 3 DEG C, and described 4th threshold value is 18 DEG C, and described 5th threshold value is 25 DEG C.
9. the storing grain method of Temperature Storage of Grain as claimed in claim 7, is characterized in that, described controller scans the first coupled temperature sensor and the second temperature sensor to obtain the temperature of silo body interior each position;
When the temperature of external environment condition is higher than 25 DEG C, described controller is with first frequency each first temperature sensor of scanning and each second temperature sensor; When the temperature of external environment condition is higher than 28 DEG C, described controller is with second frequency each first temperature sensor of scanning and each second temperature sensor; When the temperature of external environment condition is higher than 31 DEG C, described controller is with each first temperature sensor of the 3rd frequency scanning and each second temperature sensor; When the temperature of external environment condition is higher than 33 DEG C, described controller is with each first temperature sensor of the 4th frequency scanning and each second temperature sensor;
Wherein, described 4th frequency is greater than described 3rd frequency, and described 3rd frequency is greater than described second frequency, and described second frequency is greater than described first frequency.
10. the storing grain method of Temperature Storage of Grain as claimed in claim 7, is characterized in that, described controller with coupled the second temperature sensor of the 5th frequency scanning to obtain the temperature that inner each position piled by grain;
The maximum difference of the temperature detected in each moment when any one second temperature sensor within the scope of setting-up time is less than the first critical value, and described controller is with this second temperature sensor of the 6th frequency scanning; The maximum difference of the temperature detected in each moment when any one second temperature sensor within the scope of setting-up time is greater than the second critical value, and described controller is with this second temperature sensor of the 7th frequency scanning;
Wherein, described first critical value is less than described second critical value, and described 6th frequency is less than described 5th frequency, and described 7th frequency is greater than described 5th frequency.
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| CN105830673A (en) * | 2016-05-25 | 2016-08-10 | 山东稷丰粮油仓储设备有限公司 | Inner circulatory flow temperature control, hardening-temperqualityregulating and fumigating three-in-one system and process |
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| CN106114652B (en) * | 2016-08-18 | 2017-12-26 | 中国电子科技集团公司第三十八研究所 | A kind of bulk grain transportation vehicle compartment with forced ventilation and gravity-flow ventilation |
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| CN108353648A (en) * | 2018-02-11 | 2018-08-03 | 成都朗博旺科技发展有限公司 | A kind of multi-mode grain heap cooling system and silo for silo |
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| CN110823340B (en) * | 2018-08-10 | 2021-04-09 | 河南工业大学 | Granary detection method and system based on bottom surface two-circle standard deviation polynomial model |
| CN110012737A (en) * | 2019-02-15 | 2019-07-16 | 中国包装和食品机械有限公司 | A kind of potato intelligent control raw material storage |
| CN110012737B (en) * | 2019-02-15 | 2024-03-29 | 中国包装和食品机械有限公司 | Intelligent potato control raw material warehouse |
| CN110810027A (en) * | 2019-12-02 | 2020-02-21 | 吉林大学 | Grain temperature-based circulation temperature control method in granary |
| CN110810027B (en) * | 2019-12-02 | 2021-03-02 | 吉林大学 | Grain temperature-based circulation temperature control method in granary |
| CN111512799B (en) * | 2020-04-20 | 2023-10-24 | 湖州市储备粮管理有限公司 | Granary capable of controlling temperature by refrigerating in granary and temperature control method |
| CN111512799A (en) * | 2020-04-20 | 2020-08-11 | 湖州市储备粮管理有限公司 | Granary with internal refrigeration and temperature control functions and temperature control method |
| CN111903348A (en) * | 2020-08-05 | 2020-11-10 | 石阡县穗香粮油购销有限公司 | Grain storage bin |
| CN113519281A (en) * | 2021-07-16 | 2021-10-22 | 安徽省农业科学院农产品加工研究所 | High-moisture grain storage method |
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