CN210426005U - Dry regulation and control device of combined type granary - Google Patents
Dry regulation and control device of combined type granary Download PDFInfo
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- CN210426005U CN210426005U CN201921309140.1U CN201921309140U CN210426005U CN 210426005 U CN210426005 U CN 210426005U CN 201921309140 U CN201921309140 U CN 201921309140U CN 210426005 U CN210426005 U CN 210426005U
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Abstract
The utility model relates to a granary ventilation drying technique especially indicates a dry regulation and control device of combined type granary. The system comprises a two-stage heat pump system, a refrigerating system and a rotary wheel dehumidification system, wherein the two-stage heat pump system comprises a compressor I, an air-cooled condenser I, an air-cooled evaporator I, a compressor II, an air-cooled condenser II and an air-cooled evaporator II; the refrigerating system comprises a compressor III, an air-cooled condenser III, a liquid storage device, an air-cooled evaporator III and an air-cooled evaporator IV; the rotating wheel dehumidification system comprises an air treatment circulation and a regeneration air circulation and comprises an air cooling evaporator III, a rotating wheel dehumidification section I, an air cooling evaporator IV, an electric heater I, a sensible heat exchanger, an air cooling condenser I, an air cooling condenser II and an electric heater II, and all the devices are connected through pipelines. The utility model discloses a runner dehumidification method obtains low temperature or high temperature dry air, and the lower than that air relative humidity can drop, therefore under the same conditions, the drying efficiency and the fresh-keeping rate of grain are higher.
Description
Technical Field
The utility model relates to a granary ventilation drying technique especially indicates a dry regulation and control device of combined type granary.
Background
During the storage of the grains, the quality and quantity of the grains are affected by the changes of grain conditions such as temperature, humidity, moisture, insect pests and the like. The temperature in the granary is higher, and higher temperature can influence the quality of storing grain, consequently, need carry out ventilation to the granary and handle, and current ventilation system energy consumption is high, and when outside air humidity is great, the entering of outside air leads to the moulding of grain in the granary.
With the implementation of a series of national policies of benefiting agriculture, the large-scale planting of grains is promoted, the area of grains collected by a concentrator is increased, a farmer can sell newly harvested wheat without airing, and the quality control of grain warehoused grains is difficult, so that the phenomenon that high-moisture grains are directly warehoused is caused. In order to ensure the safe storage of the grains, the grains must be dried moderately, and the existing drying method, such as drying by a dryer, consumes a large amount of fossil energy, is high in cost, and natural ventilation drying is long in time consumption and is greatly influenced by external environmental weather factors. Although the dehumidification and drying technology by a condensation method can also meet the drying requirements of grains, the equipment has high operation cost, low efficiency under the conditions of high humidity and large air volume, inconvenient water drainage during operation and the like.
Patent CN201910097403.5 disclosed in the earlier stage of this subject group discloses a method for drying grains in a warehouse by preparing dry air through the combination of heat pump solution dehumidification. The outdoor air is cooled by the evaporator and then sent to the dehumidifier to be dehumidified by heat and mass exchange with the solution. The advantage of cooling the air before dehumidification is that the temperature rise of the solution in the dehumidification process is inhibited, and the dehumidification efficiency is improved. The dried air dehumidified by the dehumidifier flows through another evaporator to be cooled, and the requirement of low-temperature drying air supply parameters in the bin is met. The heat pump solution dehumidifying system needs to use corrosion-resistant devices due to the fact that the system contains dehumidifying liquid containing corrosive components such as lithium bromide and lithium chloride, cost is high, the system is complex, the system is free of corrosion, manufacturing cost is low, service life is long, and energy-saving effect is obvious.
SUMMERY OF THE UTILITY MODEL
The utility model provides a dry regulation and control device of combined type granary has solved the technical problem who acquires low temperature or high temperature dry air fast in the high moisture granary.
The technical scheme of the utility model is realized like this:
the combined type granary drying regulation and control device comprises a two-stage heat pump system, a refrigerating system and a rotating wheel dehumidification system, wherein the two-stage heat pump system comprises a compressor I, an air-cooled condenser I, an air-cooled evaporator I, a compressor II, an air-cooled condenser II and an air-cooled evaporator II; the refrigerating system comprises a compressor III, an air-cooled condenser III, a liquid storage device, an expansion valve III, an expansion valve IV, an air-cooled evaporator III and an air-cooled evaporator IV; the rotating wheel dehumidification system comprises an air treatment circulation and a regeneration air circulation, the air treatment circulation comprises an air cooling evaporator III, a rotating wheel dehumidification section I, an air cooling evaporator IV and an electric heater I, the regeneration air circulation comprises a sensible heat exchanger, an air cooling condenser I, an air cooling condenser II and an electric heater II, and all the devices are connected through pipelines.
In the two-stage heat pump system, an expansion valve I is arranged between an air-cooled condenser I and an air-cooled evaporator I, and an expansion valve II is arranged between an air-cooled condenser II and an air-cooled evaporator II; i export of compressor links to each other with air-cooled condenser I, and air-cooled evaporator I links to each other with compressor I, and II exports of compressor link to each other with air-cooled condenser II, and air-cooled evaporator I, air-cooled evaporator II and air-cooled condenser III set up with the coplanar, and wherein air-cooled evaporator II sets up in the front side of air-cooled evaporator I.
In the refrigerating system, an expansion valve III is arranged between a liquid storage device and an air cooling evaporator III, an expansion valve IV and an electromagnetic valve are sequentially arranged between the liquid storage device and the air cooling evaporator IV, an outlet of a compressor III is connected with an air cooling condenser III, an outlet of the air cooling condenser III is connected with the liquid storage device, the liquid storage device is divided into two paths, one path of the two paths of the.
In the air treatment circulation, an air cooling evaporator III, a rotating wheel dehumidification section I, an air cooling evaporator IV and an electric heater I are arranged in sequence and are arranged on the same horizontal plane.
In the regeneration air circulation, a sensible heat exchanger, an air-cooled condenser I, an air-cooled evaporator II, an electric heater II and a rotating wheel dehumidification section I are adjacently and sequentially arranged and are arranged on the same horizontal plane.
The compressor I selects R134a or R22 normal temperature heat pump working medium, and the compressor II selects high temperature heat pump working medium or carbon dioxide working medium with critical temperature more than 120 ℃.
And all the devices in the regeneration air circulation and the air treatment circulation are connected by heat-preservation air channels, and the ports of the heat-preservation air channels are driven by fans to supply air.
According to the control method of the composite granary drying regulation and control device, the electric heater I is not started when the granary is dried at a low temperature, and the electric heater I is started when the granary is dried at a high temperature.
The utility model discloses in heat pump system theory of operation as follows:
the working principle of the refrigerating system is as follows: the high-temperature high-pressure gas compressed by the compressor III enters the air-cooled condenser III to be condensed and released heat to become high-temperature high-pressure liquid, then the high-temperature high-pressure liquid enters the liquid storage device, a refrigerant from the liquid storage device is divided into two paths, one path of refrigerant enters the air-cooled evaporator III through the expansion valve III, and heat from processing air is absorbed to assist preliminary dehumidification; and the other path of the air enters an air-cooled evaporator IV through an expansion valve IV to absorb the heat of the back air from the rotary dehumidifier.
The working principle of the double-stage heat pump system is as follows: the double-stage heat pump is formed by two steam compression type circulations, the first stage is a normal-temperature heat pump circulation, the second stage is a high-temperature heat pump circulation, mixed air heat after being heated by the air-cooled condenser III and preheated by the sensible heat exchanger in a Carnot circulation principle is absorbed in a refrigerating system and is pumped to a regeneration air circulation system, the air-cooled evaporator II of the compressor II is arranged on the front side, the high condensing temperature of the second-stage high-temperature heat pump can be kept, the heating temperature of regeneration air is improved to the maximum extent, the principle of the second-stage heat pump is adopted, heat pump cascade heating is utilized, and the system can be stably heated and operated.
The rotating wheel dehumidification system comprises an air treatment cycle and a regeneration air cycle, wherein in the air treatment cycle, fresh air is cooled and assisted for dehumidification through an air-cooled evaporator I, then enters a rotating wheel for dehumidification, then enters an air-cooled evaporator II for cooling, and finally is treated to a corresponding temperature through an electric heater, in the regeneration air treatment cycle, the fresh air and the regeneration air coming out of the rotating wheel are heated through a sensible heat exchanger, then enter an air-cooled condenser I and an air-cooled condenser II for gradient heating, then are heated to a required temperature through the electric heater I, then enter a rotating wheel dehumidification section I, come out and enter a sensible heat exchanger, and finally are mixed with hot air heated by an air-cooled condenser III.
The beneficial effects of the utility model reside in that:
1. the utility model discloses a dry air is prepared to the method that the dehumidification of heat pump runner combined together, realizes just drying in storehouses of high moisture grain. One part of the regenerated air is subjected to heat recovery through the sensible heat exchanger, the waste heat of the refrigeration system is used as a heat source of the evaporator of the heat pump system, the heating temperature of the heat pump can be effectively increased, the two-stage heat pump is adopted for heating, the heating temperature of the regenerated air is increased to the maximum extent, and the energy-saving effect of the system is remarkable.
2. The utility model discloses a runner dehumidification method obtains low temperature or high temperature dry air, and the lower than that air relative humidity can drop, therefore under the same conditions, the drying efficiency and the fresh-keeping rate of grain are higher.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic structural view of the heat pump solution composite type grain warehouse drying system of the present invention.
In the figure, 1 a rotary wheel dehumidification section I, 2 an electric heating section II, 3 a compressor II, 4 an air-cooled condenser II, 5 an expansion valve II, 6 a compressor I, 7 an air-cooled condenser I, 8 an expansion valve I, 9 a sensible heat exchanger, 10 an air-cooled condenser III, 11 a compressor III, 12 a liquid storage device, 13 an air-cooled evaporator II, 14 an air-cooled evaporator I, 15 an expansion valve III, 16 an expansion valve IV, 18 an electromagnetic valve, 17 an air-cooled evaporator III, 19 an air-cooled evaporator IV and 20 an electric heater I.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without any creative effort belong to the protection scope of the present invention.
As shown in fig. 1, the embodiment of the utility model discloses a dry regulation and control device of combined type granary, including doublestage heat pump system, refrigerating system and runner dehumidification system, doublestage heat pump system includes compressor I6, air-cooled condenser I7, air-cooled evaporator I14, compressor II 3, air-cooled condenser II 4 and air-cooled evaporator II 13; the refrigerating system comprises a compressor III 11, an air-cooled condenser III 10, a liquid storage device 12, an expansion valve III 15, an expansion valve IV 16, an air-cooled evaporator III 17 and an air-cooled evaporator IV 19; the rotating wheel dehumidification system comprises an air treatment circulation and a regeneration air circulation, the air treatment circulation comprises an air-cooled evaporator III 17, a rotating wheel dehumidification section I1, an air-cooled evaporator IV 19 and an electric heater I20, the regeneration air circulation comprises a sensible heat exchanger 9, an air-cooled condenser I7, an air-cooled condenser II 4 and an electric heater II 2, and all the devices are connected through pipelines. In the two-stage heat pump system, an expansion valve I8 is arranged between an air-cooled condenser I7 and an air-cooled evaporator I14, and an expansion valve II 5 is arranged between an air-cooled condenser II 4 and an air-cooled evaporator II 13; the outlet of the compressor I6 is connected with the air-cooled condenser I7, the air-cooled evaporator I14 is connected with the compressor I6, the outlet of the compressor II 3 is connected with the air-cooled condenser II 4, the air-cooled evaporator I14, the air-cooled evaporator II 13 and the air-cooled condenser III 10 are arranged on the same plane, and the air-cooled evaporator II 13 is arranged on the front side of the air-cooled evaporator I14. In the refrigerating system, an expansion valve III 15 is arranged between a liquid storage device 12 and an air-cooled evaporator III 17, an expansion valve IV 16 and an electromagnetic valve 18 are sequentially arranged between the liquid storage device and an air-cooled evaporator IV 19, an outlet of a compressor III 11 is connected with an air-cooled condenser III 10, an outlet of the air-cooled condenser III 10 is connected with the liquid storage device 12, the liquid storage device 12 is divided into two paths, one path enters the air-cooled evaporator III 17, the other path enters the air-cooled evaporator IV 19, and the air-cooled evaporator III 17 and an outlet of the air-cooled evaporator IV 19 are combined and then return to an inlet of the compressor. In the air treatment circulation, an air cooling evaporator III 17, a rotating wheel dehumidification section I1, an air cooling evaporator IV 19 and an electric heater I20 are arranged in sequence and are arranged on the same horizontal plane. In the regeneration air circulation, a sensible heat exchanger 9, an air-cooled condenser I7, an air-cooled evaporator II 13, an electric heater II 2 and a rotating wheel dehumidification section I1 are adjacently and sequentially arranged and are arranged on the same horizontal plane. The compressor I6 selects R134a or R22 normal temperature heat pump working medium, and the compressor II 3 selects high temperature heat pump working medium or carbon dioxide working medium with critical temperature higher than 120 ℃. And all the devices in the regeneration air circulation and the air treatment circulation are connected by heat-preservation air channels, and the ports of the heat-preservation air channels are driven by fans to supply air. According to the control method of the composite granary drying regulation and control device, when the granary is dried at a low temperature, the electric heater I20 is not started, and when the granary is dried at a high temperature, the electric heater I20 is started.
The application of the secondary heat pump of the transfer wheel in the drying system of the granary comprises the following specific implementation modes: respectively starting a compressor I6 of the first-stage heat pump system and a compressor II 3 of the second-stage heat pump system to drive the vapor compression type heat pump to circulate; the sensible heat exchangers of the two-stage heat pump system are arranged in a staggered mode, in order to obtain better working effect, the condenser II 4 of the two-stage heat pump system is arranged behind the air-cooled condenser I7 of the first-stage heat pump system, and the air-cooled evaporator II 13 of the two-stage heat pump system is arranged behind the air-cooled evaporator I14 of the first-stage heat pump system in order to obtain higher temperature.
The application of the refrigeration system in the granary drying system comprises the following specific implementation modes: in a low-temperature air supply mode, high-temperature and high-pressure gas compressed by the compressor III 11 enters the air-cooled condenser III 10 to be condensed and released to become high-temperature and high-pressure liquid, then the high-temperature and high-pressure liquid enters the liquid storage device 12, and a refrigerant discharged from the liquid storage device 12 is divided into two paths, one path is throttled and depressurized, and then enters the air-cooled evaporator III 17. The other path enters an air-cooled evaporator IV 19 after being throttled and cooled by an expansion valve IV 16; after the heat of the air-cooled condenser III 10 is transferred to fresh air, the fresh air is mixed with waste gas from a rotary dehumidifier in the rotary dehumidification section I1 and then the mixture is sent to a heat pump circulating system; in a high-temperature air supply mode, high-temperature and high-pressure air compressed by the compressor III 11 enters the air-cooled condenser III 10 to be condensed and released to become high-temperature and high-pressure liquid, then enters the liquid storage device 12, one path of refrigerant discharged from the liquid storage device 12 enters the air-cooled evaporator III 17 after throttling and pressure reduction, and the other path of refrigerant closes the electromagnetic valve 18 and does not circulate any more.
The utility model provides a transfer wheel regeneration wind circulation embodiment in granary drying system, the flow that the runner regeneration wind was handled is that the new trend is with the hot-blast back that passes through sensible heat exchanger 9 heat transfer that comes out from runner dehumidification section I1, get into air-cooled condenser I7, air-cooled evaporator II 13 heats up in proper order, then heat through supplementary electric heater II 2, get into runner dehumidification section I1, it goes into sensible heat exchanger 9 heat transfer and then sends into in two stage heat pump system's air-cooled evaporator II 13 and air-cooled evaporator I14 with the new trend mixture of the air-cooled condenser III 10 through refrigerating system to come out, the atmosphere is discharged at last.
In the embodiment of the low-temperature air treatment method for the granary in the granary drying system, fresh air is driven by a fan, is cooled and assisted to dehumidify through an air-cooled evaporator III 17, then enters a rotating wheel dehumidification section I1 to dehumidify, then enters an air-cooled evaporator IV 19 to cool to dry air at about 20 ℃, an electromagnetic valve 18 is opened during the period, an electric heater I20 is closed,
this application granary high temperature treatment air treatment embodiment among granary drying system, the new trend is driven through fan and is cooled down supplementary dehumidification through air-cooled evaporator III 17 earlier, then gets into I1 further dehumidification of runner dehumidification section, heats the high temperature drying air about 45 ℃ through I20 of electric heater at last, and solenoid valve 18 is closed to the period, closes air-cooled evaporator IV 19.
The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (6)
1. The utility model provides a dry regulation and control device of combined type granary which characterized in that: the system comprises a two-stage heat pump system, a refrigerating system and a rotary wheel dehumidification system, wherein the two-stage heat pump system comprises a compressor I (6), an air-cooled condenser I (7), an air-cooled evaporator I (14), a compressor II (3), an air-cooled condenser II (4) and an air-cooled evaporator II (13); the refrigerating system comprises a compressor III (11), an air-cooled condenser III (10), a liquid storage device (12), an expansion valve III (15), an expansion valve IV (16), an air-cooled evaporator III (17) and an air-cooled evaporator IV (19); the rotating wheel dehumidification system comprises an air treatment circulation and a regeneration air circulation, the air treatment circulation comprises an air cooling evaporator III (17), a rotating wheel dehumidification section I (1), an air cooling evaporator IV (19) and an electric heater I (20), the regeneration air circulation comprises a sensible heat exchanger (9), an air cooling condenser I (7), an air cooling condenser II (4) and an electric heater II (2), and all the devices are connected through pipelines.
2. The composite granary drying regulation and control device according to claim 1, wherein: in the two-stage heat pump system, an expansion valve I (8) is arranged between an air-cooled condenser I (7) and an air-cooled evaporator I (14), and an expansion valve II (5) is arranged between an air-cooled condenser II (4) and an air-cooled evaporator II (13); the outlet of the compressor I (6) is connected with the air-cooled condenser I (7), the air-cooled evaporator I (14) is connected with the compressor I (6), the outlet of the compressor II (3) is connected with the air-cooled condenser II (4), the air-cooled evaporator I (14), the air-cooled evaporator II (13) and the air-cooled condenser III (10) are arranged on the same plane, and the air-cooled evaporator II (13) is arranged on the front side of the air-cooled evaporator I (14).
3. The composite granary drying regulation and control device according to claim 1, wherein: in the refrigerating system, an expansion valve III (15) is arranged between a liquid storage device (12) and an air cooling evaporator III (17), an expansion valve IV (16) and an electromagnetic valve (18) are sequentially arranged between the liquid storage device and an air cooling evaporator IV (19), an outlet of a compressor III (11) is connected with an air cooling condenser III (10), an outlet of the air cooling condenser III (10) is connected with the liquid storage device (12), the liquid storage device (12) is divided into two paths, one path enters the air cooling evaporator III (17), the other path enters the air cooling evaporator IV (19), and the air cooling evaporator III (17) and an outlet of the air cooling evaporator IV (19) are combined and then return to an inlet of the compressor III (11).
4. The composite granary drying regulation and control device according to claim 1, wherein: in the air treatment circulation, an air-cooled evaporator III (17), a rotating wheel dehumidification section I (1), an air-cooled evaporator IV (19) and an electric heater I (20) are arranged in sequence and are arranged on the same horizontal plane.
5. The composite granary drying regulation and control device according to claim 1, wherein: in the regeneration air circulation, a sensible heat exchanger (9), an air-cooled condenser I (7), an air-cooled evaporator II (13), an electric heater II (2) and a rotating wheel dehumidification section I (1) are adjacently and sequentially arranged and are arranged on the same horizontal plane.
6. The composite granary drying regulation and control device according to claim 1, wherein: the compressor I (6) selects a R134a or R22 normal temperature heat pump working medium, and the compressor II (3) selects a high temperature heat pump working medium or a carbon dioxide working medium with the critical temperature of more than 120 ℃.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201921309140.1U CN210426005U (en) | 2019-08-13 | 2019-08-13 | Dry regulation and control device of combined type granary |
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| CN201921309140.1U CN210426005U (en) | 2019-08-13 | 2019-08-13 | Dry regulation and control device of combined type granary |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110455067A (en) * | 2019-08-13 | 2019-11-15 | 河南中瑞制冷科技有限公司 | Double stage heat pump runner combined type silo drying system |
| CN112138964A (en) * | 2020-10-24 | 2020-12-29 | 苏州兆和空调技术工程有限公司 | Air supply system used in battery electrode coating oven |
| CN115451688A (en) * | 2022-10-10 | 2022-12-09 | 刘慧卿 | Heat pump drying equipment and control method |
-
2019
- 2019-08-13 CN CN201921309140.1U patent/CN210426005U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110455067A (en) * | 2019-08-13 | 2019-11-15 | 河南中瑞制冷科技有限公司 | Double stage heat pump runner combined type silo drying system |
| CN112138964A (en) * | 2020-10-24 | 2020-12-29 | 苏州兆和空调技术工程有限公司 | Air supply system used in battery electrode coating oven |
| CN115451688A (en) * | 2022-10-10 | 2022-12-09 | 刘慧卿 | Heat pump drying equipment and control method |
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