CN102907220A - Circular inflation modified atmosphere grain storage device and method using device - Google Patents
Circular inflation modified atmosphere grain storage device and method using device Download PDFInfo
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- CN102907220A CN102907220A CN2012102998085A CN201210299808A CN102907220A CN 102907220 A CN102907220 A CN 102907220A CN 2012102998085 A CN2012102998085 A CN 2012102998085A CN 201210299808 A CN201210299808 A CN 201210299808A CN 102907220 A CN102907220 A CN 102907220A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
- Y02A40/10—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in agriculture
- Y02A40/51—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in agriculture specially adapted for storing agricultural or horticultural products
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P60/00—Technologies relating to agriculture, livestock or agroalimentary industries
- Y02P60/80—Food processing, e.g. use of renewable energies or variable speed drives in handling, conveying or stacking
- Y02P60/85—Food storage or conservation, e.g. cooling or drying
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Abstract
The invention discloses circular inflation modified atmosphere grain storage device and method using the device. The device comprises a nitrogen inflation system, a nitrogen preparation circulation system, a grain barn system and an automatic control system. The nitrogen inflation system comprises a nitrogen inflation/preparation unit. The circulation system comprises a nitrogen preparation circulation unit and a circulation pipeline. The grain barn system comprises a barn body, a grain pile, a grain face film gasbag disposed above the grain pile, and a grain storage ventilation pipeline, a nitrogen inflation pipeline, a circular nitrogen inflation pipeline and a gas outlet pipe disposed in the grain pile. The automatic control system comprises a central processor, a nitrogen inflation/preparation unit control module, a nitrogen preparation circulation unit control module, a pressure sensor, an oxygen concentration sensor, and a grain pile temperature/humidity sensor. By cooperative operation of the nitrogen inflation system and the circulation system, the device and the method greatly improve working efficiency, save energy consumption, guarantee grain storage quality, and achieve significant pest killing effect.
Description
Technical field
The present invention relates to the grain storage technical field, especially relate to and fill ring air-conditioning storing grain system and device and utilize filling of this device to encircle the air-conditioning storing grain method.
Background technology
Grain often can infect the problem that insect pest and grain quality descend in storage, cause the loss of grain or quality to descend and inedibility.At present, in order to guarantee the safety of foodstuff preservation, grain depot mostly adopts the phosphine fumigation technology that the grain heap is carried out desinsection and processes.But utilize the phosphine fumigation desinsection to process not only meeting residual chemicals in grain, also can damage the operator of fumigant insect killing is healthy.Moreover, use for a long time the phosphine fumigation desinsection that the grain storage insect pest is developed immunity to drugs.
Along with improving constantly of people's living standard, people are to the living environment pay attention to day by day, and are more and more higher to demand high-quality, pollution-free pollution-free food.And FAO (Food and Agriculture Organization of the United Nation) has carried out further restriction to the use of fumigant in the grain and oil storage.Therefore, existing grain storage process begins to adopt the air-conditioning storing grain technology, this technology is to utilize the artificial composition of air of adjusting in the grain warehouse, produce anoxic or anaerobic, the metabolic activity that stops pest reaches the multiplying and spread of control insect pest, mould fungus inhibition breeding, reduces that grain is breathed and the purpose of physiological metabolism intensity and the ageing of delay grain quality.
Air-conditioning storing grain mainly contains following several mode: fall oxygen, add nitrogen or carbonic acid gas, oxygen scavenging chemical.
One, falling oxygen is to adopt oxygenerator or molecular sieve to remove the interior airborne oxygen of grain warehouse, makes it content and drops to below 3%, and then can effectively suppress the existence of various grain storage pests.Present utilization in this respect is mainly at rice vacuum storage technical elements, and Chinese scholars was done a large amount of experimental studies.At 20 century 70s, the people such as American scholar history Toure research thinks that vacuum storage rice is the generation of Control pests effectively.The cooking quality of rice behind the vacuum storage has been studied by Muscovite Moscow food technology research institute, the result shows: the rice that adopts the vacuum method storage, its cooking quality is better than the rice of conventional stored condition in air, digestion time is short, the expansion rate of rice is large, the look kahikatea is loose, this explanation vacuum storage method can keep the original quality of rice for a long time, consistent with the people's such as Japanese scholars rock Qi Zhemi research conclusion, they think that also the food flavor of the rice stored is better than the rice of storing in air under vacuum state.Primary Study work has been done to the vacuum storage technology of rice by the units such as domestic He'nan University of Technology, Sichuan grain research institute, has obtained the conclusion consistent with the foreign scholar.
Two, add nitrogen or carbonic acid gas, the principle that adds nitrogen or titanium dioxide is basic identical, all is to be filled with nitrogen or the carbonic acid gas that produces in the industrial processes in grain warehouse, reduces the oxygen content in air in the warehouse.Ca cold storage does not produce any illeffects, is conducive to environmental protection, should be the Green Grain Storage technology that has development prospect.As: the grain storage of carbonic acid gas controlled atmosphere.The know-why of its grain storage is: utilize outside the storehouse large-scale for air distribution system, supporting silo CO2 automatic checkout system, warehouse cycle intelligent ventilated control system and warehouse pressure-regulating device, CO2 gas is concentrated the good controlled atmosphere warehouse of input airtight performance, forced circulation system makes that the CO2 gas concentration evenly reaches technique concentration in the storehouse, automatically monitor CO2 gas concentration in the storehouse, make it to be maintained within a certain range, thereby reach the constituent that changes gas in the silo, destroy insect and mould ecotope, suppressing grain breathes, kill grain storage pest, the ageing of delay grain quality.
Three, oxygen scavenging chemical
Remove oxygen method in the silo by adding oxygen scavenging chemical.
But it is large that existing deoxidation method exists energy consumption, and efficient is low, the defective of DeGrain.
Summary of the invention
First technical problem that the present invention will solve provides a kind of ring air-conditioning storing grain system and device that fills.This device has the advantages such as energy consumption is low, efficient is high, quality guarantee is good, insecticidal effect is good.
Second technical problem that the present invention will solve provides a kind of utilization and fills the method that ring air-conditioning storing grain system and device fills the ring air-conditioning storing grain.
For solving above-mentioned first technical problem, a kind of ring air-conditioning storing grain system and device that fills of the present invention comprises Nitrogen filling system, azo-cycle streaming system processed, silo system and automatic control system;
Described Nitrogen filling system comprises and fills nitrogen nitrogen making machine group; This nitrogen outlet end that fills nitrogen nitrogen making machine group is connected with the grain storage ventilation shaft air inlet of silo by the nitrogen blanketing valve road and communicates, and described nitrogen blanketing valve road is provided with intake valve; The major function of Nitrogen filling system is inflated with nitrogen in the airtight silo;
Described circulation system comprises azo-cycle stream unit processed and circulating line; Described circulating line comprises aspirating air pipe in the silo, circulation supervisor and silo outside circulation arm; Aspirating air pipe is arranged on the top of grain heap in the described silo; The nitrogen outlet end of described azo-cycle processed stream unit is connected by circulation nitrogen blanketing valve road with the grain storage ventilation shaft of silo and communicates, and described circulation nitrogen blanketing valve road is provided with valve; Aspirating air pipe passes grain face film and is connected with the silo escape pipe and communicates in the described silo; Aspirating air pipe is provided with valve in the described silo;
Described silo system comprises warehouse, grain heap, is arranged on the grain face film air bag of grain heap top, is arranged on grain storage ventilation shaft, nitrogen blanketing valve road, circulation nitrogen blanketing valve road and escape pipe in the grain heap; Form an airtight space between described grain face film air bag and the grain heap surface; Described escape pipe and silo outside circulation supervisor's a end is connected with silo outside circulation arm and communicates; The import that described silo outside circulation supervisor's the other end and azo-cycle processed flow unit is connected and communicates.Because the setting of grain face film air bag, so that the amount of oxygen concentration in the grain heap more can be controlled effectively; Described escape pipe is provided with valve, establishes valve on the described silo outside circulation arm;
Described automatic control system comprises central processing unit, fills nitrogen nitrogen making machine group control module, azo-cycle processed stream unit control module, pressure sensor, oxygen concentration sensor and grain stack temperature humidity sensor; Described central processing unit respectively with fill nitrogen nitrogen making machine group control module, azo-cycle processed stream unit control module, pressure sensor, oxygen concentration sensor and be connected with grain stack temperature humidity sensor; Wherein, central processing unit is used for the signal that reception is returned from various sensor feedback, by analysis and the processing to signal, then controls the operation of relevant device by control module; Described pressure sensor is used for measuring the pressure between grain face and the air bag; Described oxygen concentration sensor is used for measuring the concentration of grain heap oxygen; Described grain stack temperature humidity sensor is used for measuring the temperature of grain heap;
Aspirating air pipe, circulation supervisor form the Cyclic Rings circulation road in grain storage ventilation shaft in described azo-cycle stream unit processed, circulation nitrogen blanketing valve road, the grain heap, the silo;
Described grain storage ventilation shaft and escape pipe formation of filling in nitrogen nitrogen making machine group, nitrogen blanketing valve road, the grain heap filled the nitrogen passage.
Preferably, the described nitrogen nitrogen making machine group of filling is the varying-voltage adsorption nitrogen machine group, and working flow is 60～250m
3/ h, the outlet nitrogen gas concn is 98～99.5%; Perhaps the described nitrogen nitrogen making machine group of filling is film separate type nitrogen making machine group, and working flow is 30～200m
3/ h, the outlet nitrogen gas concn is 95～99.5%; Described azo-cycle stream unit processed is film separate type nitrogen making machine group, and working flow is 30～200m
3/ h, the outlet nitrogen gas concn is 95～99.5%.
Preferably, between grain face film air bag and grain heap surface, establish pressure sensor.
Preferably, described pressure sensor is rangefinder, and this rangefinder is arranged between grain face film air bag and the silo top.Operation principle is: utilize the distance between air bag top and silo top, the variation of reflection intracapsular pressure; Described rangefinder is installed in Cang Ding, measures at any time the high-order bit of air bag apart from the distance of Cang Ding, when distance reaches setting value, can be transferred to calculator, and the analysis situation releases news, and control is filled nitrogen nitrogen making machine group and azo-cycle processed stream units and filled ring and fall oxygen and operate.
Preferably, between grain heap surface and grain face film air bag, in circulation supervisor and the grain heap, be provided with at least respectively 1 oxygen concentration sensor; Preferably, the oxygen concentration sensor in the described grain heap is provided with 5 at least, establishes an oxygen concentration sensor at the central point of grain heap, and other oxygen concentration sensor is arranged on the circumference centered by central point.
Preferably, in order to guarantee that air-breathing evenly aspirating air pipe comprises air-breathing supervisor and air-breathing arm in the described silo, vertically vertical being arranged on the air-breathing supervisor of described air-breathing arm; Be similar on the whole and be " Gui " character form structure.
Preferably, described circulation nitrogen blanketing valve road is provided with isocon, and this isocon is provided with valve.
For solving above-mentioned second technical problem, the method that ring air-conditioning storing grain system and device fills the ring air-conditioning storing grain is filled in a kind of utilization of the present invention, comprises the steps:
1) the nitrogen nitrogen making machine group control module of filling by automatic control system starts and to fill nitrogen nitrogen making machine group, and this nitrogen that fills nitrogen nitrogen making machine group enters the grain storage ventilation shaft in the grain heap, makes grain face film air bag and grain pile space between the surface and fills nitrogen and fall oxygen; Filling nitrogen closes to escape pipe nitrogen concentration expressed in percentage by volume 〉=85% and fills nitrogen nitrogen making machine group; Preferably, close behind escape pipe nitrogen concentration expressed in percentage by volume 〉=95% and fill nitrogen nitrogen making machine group, fill the face film intracapsular pressure≤20Pa of nitrogen process China Oil and Food Import and Export Corporation;
2) the azo-cycle stream unit control module processed by automatic control system starts azo-cycle stream unit processed, the nitrogen that this azo-cycle processed stream unit makes enters grain storage ventilation shaft in the grain heap by circulation nitrogen blanketing valve road, enter into again between grain heap surface and the grain face film air bag, get back to azo-cycle processed by aspirating air pipe in the silo and circulation supervisor again and flow unit and circulate and fill nitrogen;
3) data of collection oxygen sensor, the input central processing unit is processed, and the oxygen concentration expressed in percentage by volume reaches grain storage request setting value in the grain heap, stops the work of azo-cycle stream unit processed; Oxygen concentration does not reach grain storage request setting value in grain heap, repeats above-mentioned steps 1) and 2) carry out tonifying Qi;
4) collect the data of pressure sensor, the input central processing unit is processed, when the pressure between grain face film air bag and the grain heap surface≤-during 10Pa, repetition above-mentioned steps 1) and 2) carry out tonifying Qi.
Further, inhomogeneous or fill nitrogen nitrogen making machine group when breaking down when the distribution nitrogen in the grain heap, described azo-cycle stream unit processed carries out reverse circulating and fills nitrogen, be that the nitrogen that described azo-cycle stream unit makes oppositely enters aspirating air pipe in the silo through the circulation supervisor, then enter the nitrogen blanketing valve road or enter circulation nitrogen blanketing valve road through the grain storage ventilation shaft, form the nitrogen process of oppositely filling.
The method that ring air-conditioning storing grain system and device fills the ring air-conditioning storing grain is filled in a kind of utilization of the present invention, comprises the steps:
1) the nitrogen nitrogen making machine group control module of filling by automatic control system starts and to fill nitrogen nitrogen making machine group, and this nitrogen that fills nitrogen nitrogen making machine group enters the grain storage ventilation shaft in the grain heap, makes grain face film air bag and grain pile space between the surface and fills nitrogen and fall oxygen; Simultaneously, azo-cycle stream unit control module processed by automatic control system starts azo-cycle stream unit processed, the nitrogen that this azo-cycle processed stream unit makes enters grain storage ventilation shaft in the grain heap by circulation nitrogen blanketing valve road, enter into again between grain heap surface and the grain face film air bag, get back to azo-cycle stream unit processed by aspirating air pipe in the silo and circulation supervisor again;
2) data of collection pressure sensor, the input central processing unit is processed; When the pressure between grain face film air bag and the grain heap surface 〉=20Pa, stop to fill the work of nitrogen nitrogen making machine group; Circulation system carries out separately the rich nitrogen of circulation and falls the oxygen process;
3) data of collection oxygen sensor, the input central processing unit is processed, and oxygen concentration reaches grain storage request setting value in the grain heap, stops the work of circulation system; Oxygen concentration does not reach grain storage request setting value in grain heap (301), repetition above-mentioned steps 1) and 2) carry out tonifying Qi;
4) collect the data of pressure sensor (403), input central processing unit (400) is processed, when the pressure between grain face film air bag (302) and grain heap (301) surface≤-during 10Pa, repetition above-mentioned steps 1) and 2) carry out tonifying Qi.
Further, inhomogeneous or fill nitrogen nitrogen making machine group when breaking down when the distribution nitrogen in the grain heap, described azo-cycle stream unit processed carries out reverse circulating and fills nitrogen, be that the nitrogen that described azo-cycle stream unit makes oppositely enters aspirating air pipe in the silo through the circulation supervisor, then enter the nitrogen blanketing valve road or enter circulation nitrogen blanketing valve road through the grain storage ventilation shaft, form the nitrogen process of oppositely filling.
The present invention has following beneficial effect:
The present invention is by the cooperation collaborative work of Nitrogen filling system and circulation system, so that operating efficiency improves greatly, measuring and calculating has been saved and filled the nitrogen time about 1/3 by experiment; Also saved simultaneously energy consumption, measuring and calculating is energy-conservation between 10～50% by experiment; Thereby guaranteed the quality that grain stores, insecticidal effect is obvious.
Description of drawings
Below in conjunction with accompanying drawing the specific embodiment of the present invention is described in further detail
Fig. 1 is the ring air-conditioning storing grain system and device structural representation that fills of the present invention;
Fig. 2 is that the method flow diagram that ring air-conditioning storing grain system and device fills the ring air-conditioning storing grain is filled in utilization of the present invention;
Fig. 3 is aspirating air pipe structural representation in the silo;
Fig. 4 is oxygen concentration sensor layout points schematic diagram in the grain heap;
Fig. 5 is pressure sensor layout points schematic diagram among the embodiment 2.
Embodiment
Referring to shown in Figure 1, a kind of ring air-conditioning storing grain system and device that fills of the present invention comprises Nitrogen filling system, azo-cycle streaming system processed, silo system and automatic control system;
Referring to shown in Figure 1, described Nitrogen filling system comprises and fills nitrogen nitrogen making machine group 100; This nitrogen outlet end that fills nitrogen nitrogen making machine group 100 is connected with the grain storage ventilation shaft air inlet of silo by nitrogen blanketing valve road 303 and communicates, and described nitrogen blanketing valve road 303 is provided with intake valve 501; The major function of Nitrogen filling system is inflated with nitrogen in the airtight silo;
Referring to shown in Figure 1, described circulation system comprises azo-cycle stream unit 200 processed and circulating line; Described circulating line comprises aspirating air pipe 201 in the silo, circulation supervisor 202 and silo outside circulation arm 203; Aspirating air pipe 201 is arranged in top layer, top, top layer or below, the top layer 100mm of grain heap 301 in the described silo; The nitrogen outlet end of described azo-cycle processed stream unit 200 is connected by circulation nitrogen blanketing valve road 304 with the grain storage ventilation shaft of silo and communicates, and described circulation nitrogen blanketing valve road 304 is provided with valve 502; Aspirating air pipe 201 passes grain face film air bag 302 and is connected with silo escape pipe 305 and communicates in the described silo; Aspirating air pipe 201 is provided with valve 506 in the described silo;
The grain storage ventilation shaft that described silo system comprises warehouse 300, grain heap 301, be arranged on the grain face film air bag 302 of grain heap top, be arranged in the grain heap is (not shown referring to shown in Figure 1! ), nitrogen blanketing valve road 303, circulation nitrogen blanketing valve road 304 and escape pipe 305; Described grain face film air bag 302 and grain are piled and are formed an airtight space between 301 surfaces; An end of described escape pipe 305 and silo outside circulation supervisor 202 is connected to be connected with silo outside circulation arm and is communicated; The import that described silo outside circulation supervisor 203 the other end and azo-cycle processed flow unit 200 is connected and communicates; Because the setting of grain face film air bag 302, so that the amount of oxygen concentration in the grain heap 301 more can be controlled effectively; Described escape pipe 305 is provided with valve 503, establishes valve 504 on the described silo outside circulation arm 203;
Referring to shown in Figure 1, described automatic control system comprises central processing unit 400, fills nitrogen nitrogen making machine group control module 401, azo-cycle processed stream unit control module 402, pressure sensor 403, oxygen concentration sensor 404 and grain stack temperature humidity sensor 405; Described central processing unit 400 respectively with fill nitrogen nitrogen making machine group control module 401, azo-cycle processed stream unit control module 402, pressure sensor 403, oxygen concentration sensor 404 and be connected with grain stack temperature humidity sensor 405; Wherein, central processing unit 400 is used for the signal that reception is returned from various sensor feedback, by analysis and the processing to signal, then controls the operation of relevant device by control module; Described pressure sensor 403 is used for measuring the pressure between grain face and the grain face film air bag 302; Described oxygen concentration sensor 404 is used for measuring the concentration of grain heap 301 oxygen; Described grain stack temperature humidity sensor 405 is used for measuring the temperature of grain heap 301;
Aspirating air pipe 201, circulation supervisor 202 form the Cyclic Rings circulation road in grain storage ventilation shaft in described azo-cycle stream unit 200 processed, circulation nitrogen blanketing valve road 304, the grain heap, the silo;
Described grain storage ventilation shaft and escape pipe 305 formations of filling in nitrogen nitrogen making machine group 100, nitrogen blanketing valve road 303, the grain heap are filled the nitrogen passage.
The described nitrogen nitrogen making machine group of filling is the varying-voltage adsorption nitrogen machine group, and working flow is 60～250m
3/ h, the outlet nitrogen gas concn is 98～99.5%; Described azo-cycle stream unit processed is film separate type nitrogen making machine group, and working flow is 30～200m
3/ h, the outlet nitrogen gas concn is 95～99.5%.
Referring to shown in Figure 1, described pressure sensor 403 is arranged on grain and piles between 301 surfaces and the grain face film air bag 302.
Shown in Fig. 1,4, pile between 301 surfaces and the grain face film air bag 302 at grain and to be provided with 1 oxygen concentration sensor 404; Be provided with 1 oxygen concentration sensor 404 in the circulation supervisor 202; Be provided with 5 oxygen concentration sensors 404 in the grain heap 301, establish one at the central point of grain heap 301, on other 4 circumference that are arranged on centered by central point.
Referring to shown in Figure 3, for guarantee air-breathing evenly, aspirating air pipe 201 comprises air-breathing supervisor 204 and air-breathing arm 205, described air-breathing arm 205 vertical vertical being arranged on the air-breathing supervisor 204 in the described silo; Be similar on the whole and be " Gui " character form structure.
Described circulation nitrogen blanketing valve road 304 is provided with isocon 306, and this isocon 304 is provided with valve 505.
Valve 501,502,503,504 in this enforcement, 505 and 506 can adopt artificial valve, also can adopt autocontrol valve.
Embodiment 2
Referring to shown in Figure 5, repeat embodiment 1, its difference only is: described pressure sensor 403 is rangefinder, and this rangefinder is arranged between grain face film air bag 302 and the silo top.Operation principle is: utilize the distance between air bag 302 tops and silo top, the variation of reflection intracapsular pressure; Described rangefinder is installed in Cang Ding, measures at any time the high-order bit of air bag apart from the distance of Cang Ding, when distance reaches setting value, can be transferred to calculator, and the analysis situation releases news, and control is filled nitrogen nitrogen making machine group and azo-cycle processed stream units and filled ring and fall oxygen and operate.
Embodiment 3
A kind of method that ring air-conditioning storing grain system and device fills the ring air-conditioning storing grain of filling of utilizing above-described embodiment 1 comprises the steps:
1) fills nitrogen nitrogen making machine group 100 by nitrogen nitrogen making machine group control module 401 startups of filling of automatic control system, at this moment, valve 501,503 and 504 is opened, valve 502 and 505 is closed, the nitrogen that fills nitrogen nitrogen making machine group 100 enters the grain storage ventilation shaft in the grain heap, makes grain face film air bag 302 and grain pile space between 301 surfaces and fills nitrogen and fall oxygen; Filling nitrogen closes to escape pipe 305 nitrogen gas concns 〉=85% concentration expressed in percentage by volume and fills nitrogen nitrogen making machine group 100; Preferably, fill nitrogen process China Oil and Food Import and Export Corporation face film air bag 302 internal pressures≤20Pa; Escape pipe 305 nitrogen gas concns 〉=95%;
2) close and fill nitrogen nitrogen making machine group 100, the azo-cycle stream unit control module 402 processed by automatic control system starts azo-cycle processed and flows unit 200; At this moment, valve 501,503,504,505 and 506 is opened, and valve 502, closes; The nitrogen that azo-cycle processed stream unit 200 makes enters grain storage ventilation shaft in the grain heap 301 by circulation nitrogen blanketing valve road 304, enter into again grain and pile between 301 surfaces and the grain face film air bag 302, get back to azo-cycle processed by aspirating air pipe in the silo 201 and circulation supervisor 202 again and flow unit 202 and circulate and fill nitrogen;
3) data of collection oxygen sensor 404, input central processing unit 400 is processed, oxygen concentration reaches grain storage request setting value in grain heap 301, (usually, grain storage request setting value is set according to the grain storage request, for example: when keeping grain heap oxygen concentration to be 5～12%, keep more than 60 days, can reduce the respiratory rate of grain, reduce the pest population growth rate, mould fungus inhibition increases; It is not too serious that this requirement is mainly used in the grain insect pest, needs to guarantee the silo of stored grain quality.When the oxygen concentration in the grain heap is lower than 2%, or nitrogen gas concn is higher than at 98 o'clock, keeps more than 30 days, and the most grain storage pests in the grain heap are dead, and aerobic mould can be suppressed, and grain self respiratory intensity also can obviously reduce; Be mainly used in the serious silo of grain insect.Grain storage request setting value is those skilled in the art's common practise.) stop the work of azo-cycle processed stream unit 200; Oxygen concentration does not reach grain storage request setting value in grain heap 301, repeats above-mentioned steps 1) and 2) carry out tonifying Qi;
4) collect the data of pressure sensor 403, input central processing unit 400 is processed, when the pressure between grain face film air bag 302 and the grain heap surface 301≤-during 10Pa, repetition above-mentioned steps 1) and 2) carry out tonifying Qi.
Further, inhomogeneous or fill nitrogen nitrogen making machine group 100 when breaking down when the distribution nitrogen in the grain heap 301, described azo-cycle stream unit 200 processed carries out reverse circulating and fills nitrogen, be that the nitrogen that described azo-cycle stream unit 200 processed makes oppositely enters aspirating air pipe 201 in the silo through circulation supervisor 202, then enter nitrogen blanketing valve road 303 or enter circulation nitrogen blanketing valve road 304 through the grain storage ventilation shaft, form the nitrogen process of oppositely filling.
Embodiment 4
A kind of above-described embodiment 1 that utilizes fills the method that ring air-conditioning storing grain system and device fills the ring air-conditioning storing grain, comprises the steps:
1) fills nitrogen nitrogen making machine group 100 by nitrogen nitrogen making machine group control module 401 startups of filling of automatic control system, this nitrogen that fills nitrogen nitrogen making machine group 100 enters the grain storage ventilation shaft in the grain heap, makes grain face film air bag 302 and grain pile space between 301 surfaces and fills nitrogen and fall oxygen; Simultaneously, azo-cycle stream unit control module 402 processed by automatic control system starts azo-cycle stream unit 200 processed, the nitrogen that this azo-cycle processed stream unit 200 makes enters grain storage ventilation shaft in the grain heap by circulation nitrogen blanketing valve road 303, enter into again grain and pile between 301 surfaces and the grain face film air bag 302, get back to azo-cycle stream unit 200 processed by aspirating air pipe in the silo 201 and circulation supervisor 202 again; At this moment, valve 501,502,503,504 and 506 is opened, and valve 505 is closed; Fill nitrogen nitrogen making machine group 100 and work simultaneously with azo-cycle stream unit 200 processed, the oxygen process falls in the nitrogen that fills that fills nitrogen and the combination of ring nitrogen;
2) data of collection pressure sensor 403, input central processing unit 400 is processed; When grain face film air bag 302 and grain are piled pressure between 301 surfaces 〉=20Pa, stop to fill 100 work of nitrogen nitrogen making machine group; Circulation system carries out separately the rich nitrogen of circulation and falls the oxygen process;
3) data of collection oxygen sensor 404, input central processing unit 400 is processed, and oxygen concentration reaches grain storage request setting value in grain heap 301, stops the work of circulation system; Oxygen concentration does not reach grain storage request setting value in grain heap 301, repeats above-mentioned steps 1) and 2) carry out tonifying Qi;
4) collect the data of pressure sensor 403, input central processing unit 400 is processed, when grain face film air bag 302 and grain pile pressure between 301 surfaces≤-during 10Pa, repetition above-mentioned steps 1) and 2) carry out tonifying Qi.
Further, inhomogeneous or fill nitrogen nitrogen making machine group 100 when breaking down when the distribution nitrogen in the grain heap 301, described azo-cycle stream unit 200 processed carries out reverse circulating and fills nitrogen, be that the nitrogen that described azo-cycle stream unit 200 processed makes oppositely enters aspirating air pipe 201 in the silo through circulation supervisor 202, then enter nitrogen blanketing valve road 303 or enter circulation nitrogen blanketing valve road 304 through the grain storage ventilation shaft, form the nitrogen process of oppositely filling.
The word in the description orientation that adopts herein " on ", D score, " left side ", " right side " etc. all be for the convenience that illustrates based on the orientation shown in the drawing in the accompanying drawing, these orientation may be because the disposing way of device and different in actual device.
Obviously, the above embodiment of the present invention only is for example of the present invention clearly is described, and is not to be restriction to embodiments of the present invention.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here can't give all embodiments exhaustive.Everyly belong to the row that apparent variation that technical scheme of the present invention extends out or change still are in protection scope of the present invention.
Claims (10)
1. fill ring air-conditioning storing grain system and device, it is characterized in that: comprise Nitrogen filling system, azo-cycle streaming system processed, silo system and automatic control system;
Described Nitrogen filling system comprises and fills nitrogen nitrogen making machine group (100); This nitrogen outlet end that fills nitrogen nitrogen making machine group (100) is connected with the grain storage ventilation shaft air inlet of silo by nitrogen blanketing valve road (303) and communicates, and described nitrogen blanketing valve road (303) is provided with intake valve (501);
Described circulation system comprises azo-cycle stream unit (200) processed and circulating line; Described circulating line comprises aspirating air pipe (201) in the silo, circulation supervisor (202) and silo outside circulation arm (203); Aspirating air pipe (201) is arranged on top layer, top, top layer or the below, top layer of grain heap (301) in the described silo; The nitrogen outlet end of described azo-cycle processed stream unit (200) is connected by circulation nitrogen blanketing valve road (304) with the grain storage ventilation shaft of silo and communicates, and described circulation nitrogen blanketing valve road (304) is provided with valve (502); Aspirating air pipe (201) passes grain face film air bag (302) and is connected with silo escape pipe (305) and communicates in the described silo; Aspirating air pipe (201) is provided with valve (506) in the described silo;
Described silo system comprises warehouse (300), grain heap (301), is arranged on the grain face film air bag (302) of grain heap top, is arranged on grain storage ventilation shaft, nitrogen blanketing valve road (303), circulation nitrogen blanketing valve road (304) and escape pipe (305) in the grain heap (301); Form an airtight space between described grain face film air bag (302) and grain heap (301) surface; Described escape pipe (305) and silo outside circulation supervisor's (202) a end is connected 203 with silo outside circulation arm) be connected and communicate; The import that described silo outside circulation supervisor's (202) the other end and azo-cycle processed flow unit (200) is connected and communicates; Described escape pipe (305) is provided with valve (503), establishes valve (504) on the described silo outside circulation arm (203);
Described automatic control system comprises central processing unit (400), fills nitrogen nitrogen making machine group control module (401), azo-cycle processed stream unit control module (402), pressure sensor (403), oxygen concentration sensor (404) and grain stack temperature humidity sensor (405); Described central processing unit (400) respectively with fill nitrogen nitrogen making machine group control module (401), azo-cycle processed stream unit control module (402), pressure sensor (403), oxygen concentration sensor (404) and be connected with grain stack temperature humidity sensor (405);
Aspirating air pipe (201), circulation supervisor (202) form the Cyclic Rings circulation road in grain storage ventilation shaft in described azo-cycle stream unit (200) processed, circulation nitrogen blanketing valve road (304), the grain heap, the silo;
Described grain storage ventilation shaft and escape pipe (305) formation of filling in nitrogen nitrogen making machine group (100), nitrogen blanketing valve road (303), the grain heap filled the nitrogen passage.
2. according to claim 1 filling encircled the air-conditioning storing grain system and device, and it is characterized in that: the described nitrogen nitrogen making machine group (100) of filling is the varying-voltage adsorption nitrogen machine group, and working flow is 60～250m
3/ h, the outlet nitrogen gas concn is 98～99.5%; Perhaps the described nitrogen nitrogen making machine group (100) of filling is film separate type nitrogen making machine group, and working flow is 30～200m
3/ h, the outlet nitrogen gas concn is 95～99.5%; Described azo-cycle stream unit processed (200) is film separate type nitrogen making machine group, and working flow is 30～200m
3/ h, the outlet nitrogen gas concn is 95～99.5%.
3. the ring air-conditioning storing grain system and device that fills according to claim 1 is characterized in that: establish pressure sensor (403) between grain face film air bag (302) and grain heap (301) surface.
4. according to claim 1 filling encircled the air-conditioning storing grain system and device, it is characterized in that:, described pressure sensor (403) is rangefinder, this rangefinder (403) is arranged between grain face film air bag (302) and the silo top.
5. arbitrary described ring air-conditioning storing grain system and device that fills according to claim 1-4, it is characterized in that: between grain heap (301) surface and grain face film air bag (302), circulation supervisor (202) and grain piles in (301), is provided with at least respectively 1 oxygen concentration sensor (404); Preferably, oxygen concentration sensor (404) in the described grain heap (301) is provided with 5 at least, central point at grain heap (301) is established an oxygen concentration sensor (404), and other oxygen concentration sensor (404) is arranged on the circumference centered by central point.
6. according to claim 5 filling encircled the air-conditioning storing grain system and device, it is characterized in that: for guarantee air-breathing evenly, aspirating air pipe (201) comprises air-breathing supervisor (204) and air-breathing arm (205) in the described silo, vertically vertical being arranged on the air-breathing supervisor (204) of described air-breathing arm (205).
7. according to claim 6 filling encircled the air-conditioning storing grain system and device, and it is characterized in that: described circulation nitrogen blanketing valve road (304) is provided with isocon (306), and this isocon (306) is provided with valve (505).
8. the method that ring air-conditioning storing grain system and device fills the ring air-conditioning storing grain is filled in a utilization as claimed in claim 1, it is characterized in that, comprises the steps:
1) fills nitrogen nitrogen making machine group (100) by nitrogen nitrogen making machine group control module (401) startup of filling of automatic control system, this nitrogen that fills nitrogen nitrogen making machine group (100) enters the grain storage ventilation shaft in the grain heap (301), makes grain face film air bag (302) and grain pile space between (301) surface and fills nitrogen and fall oxygen; Filling nitrogen closes to escape pipe (305) nitrogen gas concn 〉=85% concentration expressed in percentage by volume and fills nitrogen nitrogen making machine group (100); Preferably, fill nitrogen process China Oil and Food Import and Export Corporation face film air bag (302) internal pressure≤20Pa; Escape pipe (305) nitrogen gas concn 〉=95%;
2) the azo-cycle stream unit control module processed (402) by automatic control system starts azo-cycle stream unit (200) processed, the nitrogen that this azo-cycle processed stream unit (200) makes enters grain by circulation nitrogen blanketing valve road (304) and piles grain storage ventilation shaft in (301), enter into again between grain heap (301) surface and the grain face film air bag (302), be responsible for (202) by aspirating air pipe (201) in the silo and circulation again and get back to azo-cycle processed and flow unit (200) and circulate and fill nitrogen;
3) data of collection oxygen sensor (404), input central processing unit (400) is processed, and the oxygen concentration expressed in percentage by volume reaches grain storage request setting value in grain heap (301), stops the work of azo-cycle stream unit processed (200); Oxygen concentration does not reach grain storage request setting value in grain heap (301), repetition above-mentioned steps 1) and 2) carry out tonifying Qi;
4) collect the data of pressure sensor (403), input central processing unit (400) is processed, when the pressure between grain face film air bag (302) and the grain heap surface (301)≤-during 10Pa, repetition above-mentioned steps 1) and 2) carry out tonifying Qi.
9. one kind is utilized the method that ring air-conditioning storing grain system and device fills the ring air-conditioning storing grain of filling as claimed in claim 1, it is characterized in that, comprises the steps:
1) fills nitrogen nitrogen making machine group (100) by nitrogen nitrogen making machine group control module (401) startup of filling of automatic control system, this nitrogen that fills nitrogen nitrogen making machine group (100) enters the grain storage ventilation shaft in the grain heap (301), makes grain face film air bag (302) and grain pile space between (301) surface and fills nitrogen and fall oxygen; Simultaneously, azo-cycle stream unit control module processed (402) by automatic control system starts azo-cycle stream unit (200) processed, the nitrogen that this azo-cycle processed stream unit (200) makes enters grain by circulation nitrogen blanketing valve road (304) and piles grain storage ventilation shaft in (301), enter into again between grain heap (301) surface and the grain face film air bag (302), get back to azo-cycle stream unit processed by aspirating air pipe (201) in the silo and circulation supervisor (202) again;
2) data of collection pressure sensor (403), input central processing unit (400) is processed; When the pressure between grain face film air bag (302) and grain heap (301) surface 〉=20Pa, stop to fill nitrogen nitrogen making machine group (100) work; Circulation system carries out separately the rich nitrogen of circulation and falls the oxygen process;
3) data of collection oxygen sensor (404), input central processing unit (400) is processed, and oxygen concentration reaches grain storage request setting value in grain heap (301), stops the work of circulation system; Oxygen concentration does not reach grain storage request setting value in grain heap (301), repetition above-mentioned steps 1) and 2) carry out tonifying Qi;
4) collect the data of pressure sensor (403), input central processing unit (400) is processed, when the pressure between grain face film air bag (302) and grain heap (301) surface≤-during 10Pa, repetition above-mentioned steps 1) and 2) carry out tonifying Qi.
10. arbitrary described method of filling the ring air-conditioning storing grain according to claim 8 or in 9, it is characterized in that, distribution nitrogen in grain heap (301) is inhomogeneous or fill nitrogen nitrogen making machine group (100) when breaking down, described azo-cycle stream unit processed (200) carries out reverse circulating and fills nitrogen, be that the nitrogen that described azo-cycle stream unit processed (200) makes oppositely enters aspirating air pipe in the silo (201) through circulation supervisor (202), then enter nitrogen blanketing valve road (303) or enter circulation nitrogen blanketing valve road (304) through the grain storage ventilation shaft, form the nitrogen process of oppositely filling.
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