CN102297574B - Solar device for drying materials - Google Patents
Solar device for drying materials Download PDFInfo
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- CN102297574B CN102297574B CN201110175453.4A CN201110175453A CN102297574B CN 102297574 B CN102297574 B CN 102297574B CN 201110175453 A CN201110175453 A CN 201110175453A CN 102297574 B CN102297574 B CN 102297574B
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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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/40—Solar thermal energy, e.g. solar towers
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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
- Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
- Y02P90/50—Energy storage in industry with an added climate change mitigation effect
Abstract
The invention provides a solar device for drying materials, which belongs to the technical field of material drying and solves the technical problems that in the prior art, separated electric energy is high, separated electric energy for drying is greatly influenced by weather, and the like. The solar device for drying the materials comprises a solar heat collector, a fan, an auxiliary electric energy heating unit and a material drying tank which are sequentially connected by adopting a ventilation pipeline. The device for drying the materials further comprises a temperature sensor I and a control unit, wherein the temperature sensor I is arranged on a ventilation pipeline arranged between the fan and the auxiliary electric energy heating unit; the control unit is connected with the auxiliary electric energy heating unit and the temperature sensor I; the temperature sensor I can be used for transmitting the detected temperature signal to the control unit; and the control unit can be used for controlling the work state of the auxiliary electric energy heating unit according to the received temperature signal. According to the device, solar energy and electric energy are mixed to dry the materials, thus consumption of conventional energy sources can be saved, and the device can be ensured not to be influenced by weather.
Description
Technical field
The invention belongs to dry materials technical field, relate to a kind of material drying device, particularly a kind of solar energy material drying device.
Background technology
A technical term in material ，Shi China production field.Manufacturing enterprise's custom is referred to as " material " by tailing, waste material and various refuses outside final products, that certainly lead in all materials (no matter it is from the means of production or means of livelihood), fuel, parts, semi-finished product, cooperation part and the production process of production field circulation.
The materials such as some of them material, particularly some products, fuel, parts, semi-finished product need to be dried, and remove inner moisture and then store or proceed to next process.
The various ways such as current drying materials system mainly contains hot-air seasoning, naturally dries, baking box oven dry.It is mainly to adopt coal and charcoal fire heating that baking box is dried, and ambient air temperature is raise, thereby make the material dewatering in baking box dry.Naturally dry main employing solar light irradiation and make material intensification dehydration.
The air themperature that the main electric energy of hot-air seasoning heats to realize in certain area raises, and air themperature realizes flowing of air under the effect of blower fan after raising, and thermal air current makes material intensification dehydration when material.As long as the advantage of electric energy heating is that electricity just can make this device work, be not subject to the impact of the factor of the outsides such as weather, but shortcoming is that electric energy heating, drying energy consumption is larger, consume electric energy many, the electricity charge are higher, cause production cost to rise.
A kind of solar heat pump pulsate fluidizing dryer as disclosed in patent (CN201561621U), comprise fluidisation material bin, fluidisation material bin top is provided with material inlet and standby moisture exhausting port, its bottom is provided with rotating shaft, rotating shaft is provided with and supports the gentle body distributor of web plate, supporting web plate is located on gas distributor, rotating shaft top is provided with blowing rod, lower end is provided with material outlet, there is a motor to be connected with rotating shaft, fluidisation material bin one sidewall is provided with solar absorber plate, at fluidisation material bin opposite side, be provided with gas outlet and air inlet, high temperature heat pump evaporimeter and high temperature heat pump condenser are installed outside gas outlet, both are connected with thermal insulation air channel, thermal insulation air channel is connected with the air inlet of fluidisation material bin, thermal insulation air channel is provided with HTHP blower fan.Though this device can utilize solar energy realize to dry, complicated structure, and the utilization of the energy is more single, once solar energy is not enough, such as raining and cloudy time, this device just cannot start.
Summary of the invention
The object of the invention is the problems referred to above that exist for existing technology, a kind of solar energy material drying device is provided, this device can be realized and utilize solar energy and electric energy to mix to come dried material, and energy consumption is smaller, and environmental pollution is little.
Object of the present invention can realize by following technical proposal: a kind of solar energy material drying device, it is characterized in that, comprise the solar thermal collector that adopts successively air pipeline to be connected, blower fan, auxiliary electric energy heating unit and drying materials tank, described blower fan can make air flowing in ventilation duct, this device also comprises a temperature sensor one and control module, described temperature sensor one is arranged on the air pipeline between blower fan and auxiliary electric energy heating unit, described control module and auxiliary electric energy heating unit, temperature sensor one is connected, described temperature sensor one can pass to control module by the temperature signal detecting, described control module can be controlled according to the temperature signal receiving the duty of auxiliary electric energy heating unit.
Solar thermal collector absorbs sunshine, the temperature of the air of heating heat collector inside, after blower fan work, can make the Air Flow in air pipeline, after common airflow passes heat collector, become thermal air current, thermal air current is flowed through after auxiliary electric energy heating unit and is flow in drying materials tank again, and material is dried.When thermal air current flow in the air pipeline of auxiliary electric energy heating unit front end, thermal air current in a pair of this place's air pipeline of temperature sensor detects, and the temperature signal detecting is passed to control module, control module judges temperature information, when detected temperature is greater than design temperature, control module does not start auxiliary electric energy heating unit, when detected temperature is less than design temperature, control module starts auxiliary electric energy heating unit and starts to carry out post bake, the temperature that makes to arrive the thermal air current at drying materials tank place reaches in preset temperature region.This device can be realized and utilize solar energy and electric energy to mix to come dried material, converts solar energy into heat, can save the consumption of conventional energy resource, thereby reduce production costs, increases economic efficiency; When bad weather, can start again electric energy heating simultaneously, make this device can not be subject to the impact of weather, improve adaptability.
In above-mentioned a kind of solar energy material drying device, on described solar thermal collector and the air pipeline between blower fan, be connected with storage heater.In order to make full use of the heat of solar energy collecting, be necessary to arrange an energy snubber device, for saving the excess energy of solar irradiation place while going out peak value.
In above-mentioned a kind of solar energy material drying device, described storage heater comprise an inner chamber and with air inlet and the gas outlet of this intracavity inter-connection, in described inner chamber, be equiped with cobblestone, between described cobblestone and the wall body of inner chamber, be provided with thermal insulation layer.Cobblestone is economical and practical, has again the effect of accumulation of heat.
In above-mentioned a kind of solar energy material drying device, described thermal insulation layer adopts mineral wool or rock wool to make, and the thickness of described thermal insulation layer is 50mm to 150mm.Mineral wool is lower than rock wool unit weight, slag ball content is few, thermal conductivity factor is low, service life is long, tenacity of fibre is large, but the maximum operation (service) temperature of rock wool is high, is up to 600 degrees Celsius of left and right, and mineral wool only has 260 degrees Celsius of left and right; Mineral wool is generally used for the insulation position lower than 200 degrees Celsius, is used for the insulation of buildings in general or cryogenic piping, and rock wool is generally used for temperature at the insulation position of 500 degrees Celsius, is used for the insulation of high temperature heat distribution pipeline or power equipment.
In above-mentioned a kind of solar energy material drying device, as preferred version, the thickness of described thermal insulation layer is 100mm.
In above-mentioned a kind of solar energy material drying device, the volume of the inner chamber of described storage heater is 3m
3to 8m
3.
In above-mentioned a kind of solar energy material drying device, as preferred version, the volume of the inner chamber of described storage heater is 5m
3.
In above-mentioned a kind of solar energy material drying device, the air inlet of described storage heater and gas outlet are connected with respectively an accumulation of heat air inlet branch road and the accumulation of heat branch road of giving vent to anger, described accumulation of heat air inlet branch road and the accumulation of heat branch road of giving vent to anger is connected with blower fan with solar thermal collector respectively, described accumulation of heat air inlet branch road and accumulation of heat are given vent to anger on branch road and are respectively equipped with two-port valve one and two-port valve two, on described accumulation of heat air inlet branch road, are also provided with anemobiagraph.Can open or close accumulation of heat air inlet branch road and the accumulation of heat branch road of giving vent to anger by two-port valve one and two-port valve two like this, the flowing velocity that can test the thermal air current in this place's air pipeline after anemobiagraph is set.
In above-mentioned a kind of solar energy material drying device, the front end of the bleeding point of described blower fan is provided with a triple valve, two reduction of fractions to a common denominators of described triple valve are not connected on air pipeline, threeway and the external world of described triple valve are connected, and can make the air pipeline at extraneous and this place be connected when the valve position of this triple valve in threeway.In the time of bad weather, the sunshine that solar thermal collector absorbs is not enough, the pure auxiliary electric energy heating unit that relies on adds hot-air, in order to reduce the power of blower fan, the valve position of triple valve is turned to threeway position, air pipeline and the external world of the front end of blower fan are connected, reduce the length of the air pipeline of blower fan exhausting.
In above-mentioned a kind of solar energy material drying device, described solar thermal collector comprises the some groups of thermal-arrest unit that are connected in parallel on air pipeline, and described thermal-arrest unit comprises the some vacuum tubes that are arranged in parallel.
In above-mentioned a kind of solar energy material drying device, the spacing between the adjacent vacuum tube in described thermal-arrest unit is 80 to 120mm.
In above-mentioned a kind of solar energy material drying device, as preferred version, the spacing between the adjacent vacuum tube in described thermal-arrest unit is 90mm.In order to make full use of solar energy irradiation energy, avoid mutually blocking between thermal-collecting tube, the spacing of all-glass vacuum tube has been carried out to design targetedly according to local solar energy incident angle feature.
In above-mentioned a kind of solar energy material drying device, the thermal-arrest gross area of described solar thermal collector is 150 to 200m
2.
In above-mentioned a kind of solar energy material drying device, as preferred version, the thermal-arrest gross area of described solar thermal collector is 183m
2, this solar thermal collector comprises three groups of thermal-arrest unit.When one group of thermal-arrest unit wherein damages or service time when long needing repairing, can be by the thermal-arrest unit replacement of this group, also remaining two groups of thermal-arrest unit absorb solar energy.
In above-mentioned a kind of solar energy material drying device, each described thermal-arrest unit includes air intake branch and goes out gas branch pipe, described go out on gas branch pipe, to be equipped with control valve and temperature sensor two, described control valve is all connected with control module with temperature sensor, and the temperature signal that described control module can transmit according to temperature sensor two controls to adjust the flow of valve.By the detection of temperature sensor, make control module control to adjust the flow that gas branch pipe of valve regulation thermal-arrest unit, thereby reach, make the thermal air current temperature of each thermal-arrest unit output consistent.
In above-mentioned a kind of solar energy material drying device, the cross sectional shape of described air pipeline is rectangle.The air pipeline strength ratio of rectangle is higher, and rate of air circulation is larger.
In above-mentioned a kind of solar energy material drying device, described control module is PLC, and described PLC is connected with a liquid crystal touch display screen.By liquid crystal touch display screen, watch each data in this device, can input some instructions simultaneously.
In above-mentioned a kind of solar energy material drying device, described auxiliary electric energy heating unit comprises an electrically heated boiler, and the two ends of electrically heated boiler are connected with air pipeline.
Compared with prior art, this device can be realized and utilize solar energy and electric energy to mix to come dried material, converts solar energy into heat, can save the consumption of conventional energy resource, thereby reduce production costs, increases economic efficiency; When bad weather, can start again electric energy heating simultaneously, make this device can not be subject to the impact of weather, improve adaptability.Arrange after an energy snubber device, can make full use of the heat of solar energy collecting, for saving the excess energy of solar irradiation place while going out peak value.
Accompanying drawing explanation
Fig. 1 is the structural representation of this solar energy material drying device.
Fig. 2 is the structural representation of thermal-arrest unit in this solar thermal collector.
In figure, 1, solar thermal collector; 2, blower fan; 3, auxiliary electric energy heating unit; 4, drying materials tank; 5, air pipeline; 6, temperature sensor one; 7, storage heater; 8, accumulation of heat air inlet branch road; 9, the accumulation of heat branch road of giving vent to anger; 10, two-port valve one; 11, two-port valve two; 12, anemobiagraph; 13, triple valve; 14, thermal-arrest unit; 15, air intake branch; 16, go out gas branch pipe; 17, control valve; 18, temperature sensor two.
The specific embodiment
Be below specific embodiments of the invention by reference to the accompanying drawings, technical scheme of the present invention is further described, but the present invention be not limited to these embodiment.
As depicted in figs. 1 and 2, this solar energy material drying device comprises solar thermal collector 1, blower fan 2, auxiliary electric energy heating unit 3 and the drying materials tank 4 that adopts successively air pipeline 5 to be connected, and the cross sectional shape of air pipeline 5 is rectangle.Air pipeline 5 strength ratios of rectangle are higher, and rate of air circulation is larger.Blower fan 2 can make air flowing in ventilation duct.Auxiliary electric energy heating unit 3 comprises an electrically heated boiler, and the two ends of electrically heated boiler are connected with air pipeline 5.
This device also comprises a temperature sensor 1 and control module, and control module is PLC, and PLC is connected with a liquid crystal touch display screen.By liquid crystal touch display screen, watch each data in this device, can input some instructions simultaneously.Temperature sensor 1 is arranged on the air pipeline 5 between blower fan 2 and auxiliary electric energy heating unit 3, control module is connected with auxiliary electric energy heating unit 3, temperature sensor 1, temperature sensor 1 can pass to control module by the temperature signal detecting, and control module can be controlled according to the temperature signal receiving the duty of auxiliary electric energy heating unit 3.
On air pipeline 5 between solar thermal collector 1 and blower fan 2, be connected with storage heater 7.In order to make full use of the heat of solar energy collecting, be necessary to arrange an energy snubber device, for saving the excess energy of solar irradiation place while going out peak value.Storage heater 7 comprise an inner chamber and with air inlet and the gas outlet of this intracavity inter-connection, in inner chamber, be equiped with cobblestone, between cobblestone and the wall body of inner chamber, be provided with thermal insulation layer.Cobblestone is economical and practical, has again the effect of accumulation of heat.Thermal insulation layer adopts mineral wool or rock wool to make, and the thickness of thermal insulation layer is 50mm to 150mm.Mineral wool is lower than rock wool unit weight, slag ball content is few, thermal conductivity factor is low, service life is long, tenacity of fibre is large, but the maximum operation (service) temperature of rock wool is high, is up to 600 degrees Celsius of left and right, and mineral wool only has 260 degrees Celsius of left and right; Mineral wool is generally used for the insulation position lower than 200 degrees Celsius, is used for the insulation of buildings in general or cryogenic piping, and rock wool is generally used for temperature at the insulation position of 500 degrees Celsius, is used for the insulation of high temperature heat distribution pipeline or power equipment.As preferred version, the thickness of thermal insulation layer is 100mm.The volume of the inner chamber of storage heater 7 is 3m
3to 8m
3.As preferred version, the volume of the inner chamber of storage heater 7 is m
3.The air inlet of storage heater 7 and gas outlet are connected with respectively an accumulation of heat air inlet branch road 8 and the accumulation of heat branch road 9 of giving vent to anger, accumulation of heat air inlet branch road 8 and the accumulation of heat branch road 9 of giving vent to anger is connected with blower fan 2 with solar thermal collector 1 respectively, accumulation of heat air inlet branch road 8 and accumulation of heat are given vent to anger on branch road 9 and are respectively equipped with two-port valve 1 and two-port valve 2 11, on accumulation of heat air inlet branch road 8, are also provided with anemobiagraph 12.Can open or close accumulation of heat air inlet branch road 8 and the accumulation of heat branch road 9 of giving vent to anger by two-port valve 1 and two-port valve 2 11 like this, the flowing velocity that can test the thermal air current in this place's air pipeline 5 after anemobiagraph 12 is set.
The front end of the bleeding point of blower fan 2 is provided with a triple valve 13, two reduction of fractions to a common denominators of triple valve 13 are not connected on air pipeline 5, threeway and the external world of triple valve 13 are connected, and can make the air pipeline 5 at extraneous and this place be connected when the valve position of this triple valve 13 in threeway.In the time of bad weather, the sunshine that solar thermal collector 1 absorbs is not enough, the pure auxiliary electric energy heating unit 3 that relies on adds hot-air, in order to reduce the power of blower fan 2, the valve position of triple valve 13 is turned to threeway position, air pipeline 5 and the external world of the front end of blower fan 2 are connected, reduce the length of the air pipeline 5 of blower fan 2 exhausting.
Solar thermal collector 1 comprises the some groups of thermal-arrest unit 14 that are connected in parallel on air pipeline 5, and thermal-arrest unit 14 comprises the some vacuum tubes that are arranged in parallel.Spacing between adjacent vacuum tube in thermal-arrest unit 14 is 80 to 120mm.As preferred version, the spacing between the adjacent vacuum tube in thermal-arrest unit 14 is 90mm.In order to make full use of solar energy irradiation energy, avoid mutually blocking between thermal-collecting tube, the spacing of all-glass vacuum tube has been carried out to design targetedly according to local solar energy incident angle feature.The thermal-arrest gross area of solar thermal collector 1 is 150 to 200m
2.As preferred version, the thermal-arrest gross area of solar thermal collector 1 is 183m
2, this solar thermal collector 1 comprises three groups of thermal-arrest unit 14.When one group of thermal-arrest unit 14 wherein damages or service time when long needing repairing, the thermal-arrest unit of this group 114 can be changed, also remaining two groups of thermal-arrest unit 14 absorb solar energy.Each thermal-arrest unit 14 includes air intake branch 15 and goes out gas branch pipe 16, go out and on gas branch pipe 16, be equipped with control valve 17 and temperature sensor 2 18, control valve 17 is all connected with control module with temperature sensor, and the temperature signal that control module can transmit according to temperature sensor 2 18 controls to adjust the flow of valve 17.By the detection of temperature sensor, make control module control to adjust valve 17 and regulate the flow that gas branch pipe 16 of thermal-arrest unit 14, thereby reach, make the thermal air current temperature of each thermal-arrest unit 14 outputs consistent.
Principle is as follows: solar thermal collector 1 absorbs sunshine, the temperature of the air of heating heat collector inside, after blower fan 2 work, can make the Air Flow in air pipeline 5, after common airflow passes heat collector, become thermal air current, thermal air current is flowed through after auxiliary electric energy heating unit 3 and is flow in drying materials tank 4 again, and material is dried.When thermal air current flow in the air pipeline 5 of auxiliary electric energy heating unit 3 front ends, thermal air current in one 6 pairs of these place's air pipelines 5 of temperature sensor detects, and the temperature signal detecting is passed to control module, control module judges temperature information, when detected temperature is greater than design temperature, control module does not start auxiliary electric energy heating unit 3, when detected temperature is less than design temperature, control module starts auxiliary electric energy heating unit 3 and starts to carry out post bake, the temperature that makes to arrive the thermal air current at drying materials tank 4 places reaches in preset temperature region.This device can be realized and utilize solar energy and electric energy to mix to come dried material, converts solar energy into heat, can save the consumption of conventional energy resource, thereby reduce production costs, increases economic efficiency; When bad weather, can start again electric energy heating simultaneously, make this device can not be subject to the impact of weather, improve adaptability.
Claims (9)
1. a solar energy material drying device, it is characterized in that, comprise the solar thermal collector (1) that adopts successively air pipeline (5) to be connected, blower fan (2), auxiliary electric energy heating unit (3) and drying materials tank (4), described blower fan (2) can make air flowing in ventilation duct, this device also comprises a temperature sensor one (6) and control module, described temperature sensor one (6) is arranged on the air pipeline (5) between blower fan (2) and auxiliary electric energy heating unit (3), described control module and auxiliary electric energy heating unit (3), temperature sensor one (6) is connected, described temperature sensor one (6) can pass to control module by the temperature signal detecting, described control module can be controlled according to the temperature signal receiving the duty of auxiliary electric energy heating unit (3), the front end of the bleeding point of described blower fan (2) is provided with a triple valve (13), two reduction of fractions to a common denominators of described triple valve (13) are not connected on air pipeline (5), threeway and the external world of described triple valve (13) are connected, and can make the air pipeline (5) at extraneous and this place be connected when the valve position of this triple valve (13) in threeway.
2. a kind of solar energy material drying device according to claim 1, is characterized in that, on the air pipeline (5) between described solar thermal collector (1) and blower fan (2), is connected with storage heater (7).
3. a kind of solar energy material drying device according to claim 2, it is characterized in that, described storage heater (7) comprise an inner chamber and with air inlet and the gas outlet of this intracavity inter-connection, in described inner chamber, be equiped with cobblestone, between described cobblestone and the wall body of inner chamber, be provided with thermal insulation layer.
4. a kind of solar energy material drying device according to claim 3, is characterized in that, described thermal insulation layer adopts mineral wool or rock wool to make, and the thickness of described thermal insulation layer is 50mm to 150mm, and the volume of the inner chamber of described storage heater (7) is 3m
3to 8m
3
。
5. according to a kind of solar energy material drying device described in claim 2 or 3 or 4, it is characterized in that, the air inlet of described storage heater (7) and gas outlet are connected with respectively an accumulation of heat air inlet branch road (8) and the accumulation of heat branch road (9) of giving vent to anger, described accumulation of heat air inlet branch road (8) is connected with blower fan (2) with solar thermal collector (1) simultaneously, and the accumulation of heat branch road (9) of giving vent to anger is connected with blower fan (2) with solar thermal collector (1) simultaneously, described accumulation of heat air inlet branch road (8) and accumulation of heat are given vent to anger on branch road (9) and are respectively equipped with two-port valve one (10) and two-port valve two (11), on described accumulation of heat air inlet branch road (8), be also provided with anemobiagraph (12).
6. according to a kind of solar energy material drying device described in claim 1 or 2 or 3 or 4, it is characterized in that, described solar thermal collector (1) comprises the some groups of thermal-arrest unit (14) that are connected in parallel on air pipeline (5), and described thermal-arrest unit (14) comprises the some vacuum tubes that are arranged in parallel.
7. a kind of solar energy material drying device according to claim 6, it is characterized in that, spacing between adjacent vacuum tube in described thermal-arrest unit (14) is 80 to 120mm, and the thermal-arrest gross area of described solar thermal collector (1) is 150 to 200m
2.
8. a kind of solar energy material drying device according to claim 7, it is characterized in that, each described thermal-arrest unit (14) includes air intake branch (15) and goes out gas branch pipe (16), described go out on gas branch pipe (16), to be equipped with control valve (17) and temperature sensor two (18), described control valve (17) is all connected with control module with temperature sensor, and the temperature signal that described control module can transmit according to temperature sensor two (18) controls to adjust the flow of valve (17).
9. according to a kind of solar energy material drying device described in claim 1 or 2 or 3 or 4, it is characterized in that, the cross sectional shape of described air pipeline (5) is rectangle, described control module is PLC, described PLC is connected with a liquid crystal touch display screen, described auxiliary electric energy heating unit (3) comprises an electrically heated boiler, and the two ends of electrically heated boiler are connected with air pipeline (5).
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109186103A (en) * | 2018-07-10 | 2019-01-11 | 上海理工大学 | Solar thermal collector heat preservation utilizes and residual heat drying integrated apparatus |
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