CN206990712U - A kind of soil thermo-electric generation experimental provision - Google Patents
A kind of soil thermo-electric generation experimental provision Download PDFInfo
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- CN206990712U CN206990712U CN201720822023.XU CN201720822023U CN206990712U CN 206990712 U CN206990712 U CN 206990712U CN 201720822023 U CN201720822023 U CN 201720822023U CN 206990712 U CN206990712 U CN 206990712U
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Abstract
A kind of soil thermo-electric generation experimental provision, including soil box, heating cable, temperature controller, temperature probe, heat absorbing fins, gravity assisted heat pipe, thermo-electric generation sheet, resistance, thermocouple, soil temperature-moisture sensor, current transducer, data acquisition and emission system；The heating cable can be heated to soil, and the temperature of soil is controlled with reference to temperature controller and temperature probe；The soil thermo-electric generation experimental provision can gather soil temperature and humidity, temperature, current and voltage data, and transfer data to platform of internet of things by GPRS network；The utility model can promote the correlative study of soil thermo-electric generation, be provided the foundation experiment porch for the research of powering of the low power devices that work in particular circumstances.
Description
Technical field
A kind of soil thermo-electric generation experimental provision is the utility model is related to, is passed suitable for the experiment of soil thermo-electric generation and soil
Hot Mechanism Study.This soil thermo-electric generation experimental provision can control the experiment parameters such as the temperature difference, humidity, resistance, carry out soil temperature
Poor generator experimental, temperature, humidity, electric current, voltage real time value can also be obtained, data base is provided for the research of soil thermoelectricity
Plinth.
Background technology
The rapid development of technology of Internet of things makes it be widely applied in forestry, and substantial amounts of wireless sensing is arranged in forest
Device collects various data required for us, and due to the particularity of forest environment, wireless senser powerup issue seems more
It is prominent, it is difficult to obtain continual and steady electric energy, the problem of stringing is difficult and cost is high be present using line powering, using battery powered
The problem of being polluted to forest zone is dealt with improperly in the presence of changing difficulty, being difficult to replacing and used batteries in time, constrains wireless biography
Application of the sensor in forest zone.Therefore inevitable choice is turned into using the power supply mode in situ gathered materials on the spot.
Correlation monitoring and research show that soil can be used for powering for forestry wireless senser.Concrete thought is as follows：Will weight
Power heat pipe is embedded in forest soil, the heat energy in soil is transferred into earth's surface using the circulating phase-change of gravity assisted heat pipe working medium, so
Semiconductor temperature differential generating piece, thermo-electric generation sheet another side and air contact are sticked in gravity assisted heat pipe radiating end afterwards, utilizes both sides
The temperature difference carries out the supply sensor use that generates electricity.According to above-mentioned thinking, the utility model devises a set of soil thermo-electric generation experiment
Device.
Utility model content
For problem above, the utility model devises a kind of soil thermo-electric generation experimental provision, including a wooden soil
Earth container, soil moisture control system, soil electricity generation system, data acquisition and emission system, soil temperature-moisture sensor, thermoelectricity
Even summation current transducer, wherein：
The wood soil container is experimental provision basic platform, and size is 50cm × 50cm × 40cm, soil during use
Soil, electricity generation system of being placed into the soil in soil and sensor are placed in container.It can be needed to change soil type according to experiment
Come the influence studied its heat-transfer effect and its exported to soil electricity generation system electric energy.
The soil moisture control system includes temperature controller, external temperature probe and heating cable.Heating cable uses S-shaped
Wood soil container bottom is arranged in, simulation plane heat source is heated to soil, and heating cable is powered by temperature controller.Outside
Put temperature probe to be arranged in soil, close to soil electricity generation system heat absorbing fins, temperature controller feeds back according to external temperature probe
Temperature signal controls the connection of heating cable power supply and disconnection, and temperature is maintained into setting fixed value.
The soil electricity generation system is made up of heat absorbing fins, gravity assisted heat pipe and 8 pieces of thermo-electric generation sheet three parts, heat absorbing fins
It is placed at gravity assisted heat pipe heat absorbing end, increases the heat absorption efficiency of gravity assisted heat pipe；Thermo-electric generation sheet is fitted in gravity heat by sleeve
At pipe radiating end；Resistance is accessed in 8 pieces of thermo-electric generation sheets circuit in series and forms current loop, resistance is 10 Ω.
During heat absorbing fins and gravity assisted heat pipe the latter half are placed into the soil during experiment, thermo-electric generation sheet and gravity assisted heat pipe top half expose soil
Earth surface.
The data acquisition and emission system include data collecting card and GPRS data transport module, and data collecting card can be adopted
Signal, the GPRS such as collection temperature, humidity, loop current, loop voltage are transmitted data to Internet of Things data and deposited by 2G, 3G network
Store up terminal.
The soil temperature-moisture sensor is used to measuring the humiture of soil in containers of soil, is placed on heat absorption fins during use
Near piece, signal wire is connected to the data acquisition and emission system.
The thermocouple is used to measure heat absorbing fins, gravity assisted heat pipe heat absorbing end, gravity assisted heat pipe back, gravity assisted heat pipe radiating end
With temperature of the cold side of the power generation temperature, heat absorbing fins near-thermal pipe end, the remote heat pipe end of heat absorbing fins, gravity heat are placed individually into during use
In the middle part of pipe heat absorbing end, gravity assisted heat pipe at back, gravity assisted heat pipe top radiating end and temperature of the cold side of the power generation, corresponding isolation is carried out
Soil or air themperature measure, signal wire are connected to the data acquisition and emission system.
The current transducer is used to measure soil electricity generation system circuit loop electric current, and soil is connected in series to during use and is generated electricity system
In system current loop, and it is connected to the data acquisition and emission system.
This experimental provision is rational in infrastructure, can change the soil moisture and humidity, can automatic measurement soil temperature and humidity, thermo-electric generation
The piece both ends temperature difference and current and voltage data, platform of internet of things is transmitted data to by GPRS, device reliability is high, and transmission is stable
Property it is good, for soil thermo-electric generation research and the research of soil heat transfer mechanism there is huge facilitation.
The purpose of this utility model is：, can be with using the utility model based on the needs of forest soil thermo-electric generation research
The control soil moisture is higher than air themperature, experiment is no longer limited by season, accelerates the flow of research of soil thermo-electric generation.Go
Soil heat transfer mechanism research can be also carried out in laboratory after removing soil electricity generation system, makes up deficiency and the field of simulation study
The limitation of experiment.Research for forest soil thermo-electric generation, the research of the power supply for forest zone low-power component have extremely
Important meaning.
The beneficial effects of the utility model are：Soil is heated by using heating cable, temperature controller and thermometric are visited
The use of head can control the soil moisture in different setting values.This experimental provision has multi signal acquisition function, can adopt simultaneously
Collect soil temperature and humidity, metal temperature, electric current and voltage signal；Terminal is stored by GPRS wireless networks to Internet of Things data to send
Data, it can in any place network and check, it is reliable convenient.Can be by changing soil types, changing soil in containers of soil
The modes such as moisture content carry out the research of soil HEAT TRANSFER LAW in soil thermo-electric generation indoors.The utility model can also be by changing
Heating length of tube, soil heating-up temperature, thermo-electric generation sheet quantity study influence of the above-mentioned factor to generating effect.
Brief description of the drawings
Accompanying drawing 1：Soil thermo-electric generation experimental provision global design figure
Accompanying drawing 2：Soil heat transfer mechanism research schematic diagram
Accompanying drawing 3：Soil moisture control system schematic diagram
Accompanying drawing 4：Thermo-electric generation sheet places schematic diagram
Accompanying drawing 5：Heat absorbing fins schematic diagram
Accompanying drawing 6：Thermo-electric generation sheet connection diagram
Reference：
S1-S2, S4, S6-S8 --- thermocouple
S3 --- current transducer
S5 --- soil temperature-moisture sensor
1 --- resistance
2 --- data acquisition and emission system
3 --- containers of soil
4 --- temperature probe
5 --- heating cable
6 --- temperature controller
7 --- heat absorbing fins
8 --- gravity assisted heat pipe
9 --- thermo-electric generation sheet
10 --- sleeve
Embodiment
In order that narration of the present utility model is more detailed with complete, with reference to the accompanying drawings and examples, to this practicality
It is new to be described in detail.Identical number represents same or like component in accompanying drawing, but the embodiment provided is not
To limit the scope that the utility model is covered.
As shown in Figure 1, the utility model provides a kind of soil thermo-electric generation experimental provision, including containers of soil (3),
Soil moisture control system (4,5,6), soil electricity generation system (7,8,9,10), data acquisition and emission system (2), resistance (1),
Current transducer (S3), thermocouple (S1-S2, S4, S6-S8) and soil temperature-moisture sensor (S5).
Wood soil container (3) is the basic platform of experimental provision, and size is 50cm × 50cm × 40cm, in containers of soil
The soil for being collected in forest is placed, can be needed to change Different Soil according to experiment and change soil moisture.Containers of soil
Length and width mainly be determined according to soil heat transfer mechanisms Research Requirements, height mainly according to research soil longitudinal direction
Heat transfer is established with insulation optimum size.Soil moisture control system includes heating cable (5), temperature controller (6) and external thermometric and visited
Head (4), heating cable (5) are arranged in the bottom (accompanying drawing 3) of containers of soil (3) using S-shaped, and electricity is connected by temperature controller (6)
It source, can be considered that plane heat source heats to soil, the soil moisture is higher than air, break limitation of the season to experiment, temperature controller
External temperature probe (4) is placed in the soil of heat absorbing fins (7) nearby, and soil moisture signal is fed back into temperature controller (6), temperature
Control device (6) controls the connection and disconnection of heating cable (5) power supply according to whether the temperature signal of feedback reaches set temperature value,
It is constant that soil is heated to keeping temperature after setting fixed temperature.
Soil electricity generation system is by the heat absorbing fins 7 (accompanying drawing 5) of gravity assisted heat pipe (8) bottom, middle gravity assisted heat pipe (8) and upper
Thermo-electric generation sheet (9) three parts composition that 8 pieces of portion is cascaded.It is excellent that there is gravity assisted heat pipe common metal can not compare
Thermal conductivity, gravity assisted heat pipe are divided into heat absorbing end, adiabatic back and radiating end three parts, are that the work easily undergone phase transition is situated between in heat pipe
Matter, liquid refrigerant absorb heat in heat absorbing end and evaporated, and gaseous working medium rises to radiating end release heat, and steaming is flowed back to again after condensing into drop
Start, realize that heat energy independently transmits after iterative cycles.The utility model uses normal temperature type gravity assisted heat pipe, length 2m, external diameter
40mm, shell, end cap and the back material of gravity assisted heat pipe are stainless steel, and liquid-sucking core is porous material, and working medium is inorganic salts.Heat absorption
Fin is one section of copper pipe, is fixed with 6 pieces of copper sheets on alien invasion, interior facade is bonded with gravity assisted heat pipe heat absorbing end to be conducted heat, copper sheet
Contact and absorbed heat with soil, internal diameter of copper pipe 40mm, length is also 40mm, and copper sheet length is 250mm, thickness 1mm.The temperature difference
The principle of power generation sheet is Seebeck effect, and as the theoretical foundation of thermoelectric energy switch technology, Seebeck effect is pointed out, at two kinds
In the loop of metal A and B composition, if the temperature of different metal junction is variant, then electric current can be caused to produce in loop,
And trigger corresponding electromotive force, i.e. thermoelectrical potential.The Seebeck effect of semi-conducting material is the most obvious in existing material, so at present
Thermo-electric generation sheet be made of semi-conducting material.Used in the utility model by U.S. Marlow Industries
The TG12-6-02 type thermo-electric generation sheets of company's production, length 44mm, width 40mm, thickness 3.3mm.Thermo-electric generation sheet
(9) (accompanying drawing 4) is bonded with sleeve (10) between gravity assisted heat pipe (8), realizes the transition from cylinder to plane, sleeve is copper
Matter or silver square, there is through hole to be assembled with gravity assisted heat pipe between top and bottom, four additional face is bonded with thermo-electric generation sheet；
Between gravity assisted heat pipe and sleeve fitting surface, sleeve and thermo-electric generation sheet binding face and gravity assisted heat pipe and heat absorbing fins binding face
Heat conductive silica gel is coated with, improves heat transfer efficiency.Thermo-electric generation sheet is attached to outside heat pipe heat radiation end, using between radiating end and air
Temperature difference is generated electricity.8 pieces of thermo-electric generation sheets are connected into current loop, and resistance (1) and current transducer (S3) are accessed in circuit
(accompanying drawing 6).
In order to reduce thermal loss, for gravity assisted heat pipe in addition to heat absorbing end and radiating end, remainder is equal in soil electricity generation system
Winding asbestos yarn is incubated.
【Embodiment 1】
As shown in Figure 1, soil electricity generation system (7,8,9,10) is placed into containers of soil (3), heat absorbing fins (7) and
Gravity assisted heat pipe (8) heat absorbing end is placed into the soil, and thermo-electric generation sheet (9), sleeve (10) and gravity assisted heat pipe (8) radiating end expose soil table
Face, soil thickness is 5cm between heat absorbing fins (7) and heating cable (5), makes soil electricity generation system and thermal source --- generates heat
Isolation is opened completely between cable (5), and the heat for ensureing heat pipe transmission is absorbed from soil, rather than is directly absorbed from thermal source.
Sensor is disposed with experimental provision, on fin away from (S6) at heat pipe, fin close to (S7) and gravity assisted heat pipe at heat pipe
Heat absorbing end (S8) arranges thermocouple, can obtain the temperature variation data of these key positions, is the optimization of soil electricity generation system
There is provided data to support, carry out insulation with adiabatic adhesive tape between thermocouple and soil, the temperature data for ensureing to obtain is to be surveyed
The temperature of metal, rather than the soil moisture.Due to soil moisture to soil heat transfer there is considerable influence, be influence soil heat transfer with
The important parameter of system generated energy, so arranging a soil temperature-moisture sensor (S5) again in the soil of sustained height to obtain
Obtain the situation of change of this layer of soil moisture and humidity.In order to evaluate the efficiency of thermal transfer of heat pipe, the adiabatic effect of back part is examined
Fruit, a thermocouple (S4) is also arranged in the middle part of heat pipe, wound with asbestos yarn to completely cut off air themperature.Finally at heat pipe heat radiation end
(S2) it is respectively arranged thermocouple with temperature of the cold side of the power generation (S1) and carries out temperature monitoring, adiabatic adhesive tape is similarly sticked on thermocouple
To completely cut off air themperature.
The resistance (1) that 10 Ω are accessed in the circuit that 8 pieces of thermo-electric generation sheets are composed in series forms current loop, and electric current returns
Another access current transducer (S3) collection current data (accompanying drawing 6) in road, the voltage measurement function of being carried with reference to data collecting card,
The power output of soil electricity generation system is obtained, the performance of soil electricity generation system is made an appraisal according to power and temperature data.Institute
There is sensor to be connected to after data collecting card (2) and Internet of Things data storage terminal is transmitted data to by GPRS wireless networks.
Temperature controller (6) power supply is connected, sets fixed temperature, heating cable (5) starts to heat soil, and the soil moisture starts
Rise, heat absorbing fins (7) absorb heat transfer from soil and give gravity assisted heat pipe (8) heat absorbing end, and gravity assisted heat pipe (8) is carried out to heat
Transmission, radiating end is reached, thermo-electric generation sheet (9) hot junction is transferred heat to by sleeve (10), with thermo-electric generation sheet (9) cold end
The temperature difference is formed, electric energy is produced in thermo-electric generation sheet (9), current loop is formed by resistance (1) and current transducer (S3)；When
When temperature probe (4) place temperature reaches predetermined temperature value, temperature controller (6) disconnects heating cable power supply, stops to soil
Heat, temperature controller (6) connects heating cable power supply again when temperature is less than design temperature at temperature probe, and soil is circulated
Heating, setting fixed value is maintained by the soil moisture；Temperature controller power supply is finally disconnected, the soil moisture declines until room temperature；Entirely
During thermocouple (S1-S2, S4, S6-S8), soil temperature-moisture sensor (S5) and current transducer (S3) will monitor in real time
The data variation of each position, and data are acquired and transmitted with storage by data acquisition and emission system (2).Later stage can be right
The relation of generated energy and the soil moisture, the thermo-electric generation sheet both ends temperature difference is analyzed.
【Embodiment 2】
As shown in Figure 2.Soil electricity generation system is got rid of, soil is placed in containers of soil, positioned at the containers of soil plane of symmetry
On soil temperature-moisture sensor S5-1, S5-2, S5-3 be arranged in sustained height, be 10cm apart from containers of soil distance from bottom,
S5-4, S5-5, S5-6 are respectively 20cm apart from containers of soil distance from bottom, S5-7, S5-8, S5-9 are located at directly over it
Directly over it at the 30cm of containers of soil bottom.All soil temperature-moisture sensors are connected to the data acquisition and transmitting
System.
Open temperature controller (6) and monitoring system power supply start to test, be heated to stable state --- each position temperature is no longer
Insulation a period of time turns off temperature controller (6) power supply after change, treats that it is cooled to room temperature, you can obtain whole heating-insulating-drop
The data of warm process, the data of each Temperature Humidity Sensor are analyzed with the Heat transmission rule that can draw soil.In experiment not
Different temperatures and control soil different humidity can be set on temperature controller (6) with group experiment.
In summary, preferred embodiment of the present utility model is these are only, is not intended to limit of the present utility model
Protection domain.All any modification, equivalent substitution and improvements within the spirit and principles of the utility model, made etc., all should be wrapped
It is contained within the scope of protection of the utility model.
Claims (6)
1. a kind of soil thermo-electric generation experimental provision, including containers of soil (3), soil moisture control system, soil electricity generation system,
Data acquisition and emission system (2), resistance (1), current transducer (S3), thermocouple and soil temperature-moisture sensor (S5), its
It is characterised by：
Soil is placed in containers of soil (3)；The soil moisture control system includes heating cable (5), temperature controller (6) and external survey
Temperature probe (4), heating cable (5) are arranged in containers of soil (3) bottom using S-shaped, and power supply is connected by temperature controller (6), external
Temperature probe (4) is placed near heat absorbing fins (7)；The soil electricity generation system is by heat absorbing fins (7), gravity assisted heat pipe (8), temperature
Poor power generation sheet (9) and sleeve (10) composition, heat absorbing fins (7) coordinate with gravity assisted heat pipe (8) heat absorbing end, and thermo-electric generation sheet (9) is logical
Sleeve (10) fitting gravity assisted heat pipe (8) radiating end is crossed, 8 pieces of thermo-electric generation sheets (9) are composed in series current loop, electricity is accessed in loop
(1) and current transducer (S3) are hindered, heat absorbing fins (7) are embedded in the soil in containers of soil (3) with gravity assisted heat pipe (8) heat absorbing end
In, the distance 5cm between heating cable (5), TRT and gravity assisted heat pipe (8) radiating end expose soil surface；Thermocouple pastes
Thermo-electric generation sheet (9) cold end is closed, thermocouple fits to gravity assisted heat pipe (8) radiating end, and thermocouple is fitted in gravity assisted heat pipe (8)
Portion, thermocouple fit to heat absorbing fins (7) away from gravity assisted heat pipe position, and thermocouple fits to heat absorbing fins (7) close to gravity heat
Pipe position；In soil where soil temperature-moisture sensor (S5) is placed on heat absorbing fins (7)；Thermocouple, soil temperature and humidity sensing
Device (S5), current transducer (S3) are all connected to data acquisition and emission system (2),
Temperature controller (6) power supply is connected, sets fixed temperature, heating cable (5) starts to heat soil, soil moisture rise, inhales
Hot fin (7) absorbs heat transfer from soil and gives gravity assisted heat pipe (8) heat absorbing end, and gravity assisted heat pipe is transmitted to heat, passed through
Sleeve (10) transfers heat to thermo-electric generation sheet (9) hot junction, and the temperature difference, thermo-electric generation sheet are formed with thermo-electric generation sheet (9) cold end
(9) electric energy is produced in, current loop is formed by resistance (1) and current transducer (S3)；When temperature probe (4) place, temperature reaches
During set temperature value, temperature controller (6) disconnects heating cable power supply, stops heating soil, and temperature probe (4) place temperature, which is less than, to be set
Temperature controller (6) connects heating cable power supply again when constant temperature is spent, and circulating-heating is carried out to soil, and it is solid that the soil moisture is maintained into setting
Definite value；Temperature controller (6) power supply is finally disconnected, the soil moisture will decline until room temperature；Thermocouple, soil temperature and humidity in whole process
Sensor (S5) and current transducer (S3) change the humidity for continuing to monitor each position, temperature, electric current, voltage data, pass through
Data acquisition and emission system (2) are acquired and transmitted storage to data.
2. a kind of soil thermo-electric generation experimental provision according to claim 1, wherein heating cable (5) combine temperature controller
(6) soil is heated with the external temperature probe (4) that is arranged in soil where heat absorbing fins, and eventually through soil temperature
The degree control system control soil moisture is higher than air themperature.
3. a kind of soil thermo-electric generation experimental provision according to claim 1, it is characterised in that passed using soil temperature and humidity
Sensor (S5), thermocouple and current transducer (S3) gather soil temperature and humidity, metal temperature, loop current, road loop electricity in real time
Data are pressed, and Internet of Things data is sent said data to by GPRS cordless communication networks and stores terminal.
4. a kind of soil thermo-electric generation experimental provision according to claim 2, it is characterised in that can be low in the soil moisture
Thermo-electric generation experiment is carried out under air temperature conditions.
A kind of 5. soil thermo-electric generation experimental provision according to claim 1, it is characterised in that gravity assisted heat pipe (8) heat absorbing end
Upper have heat absorbing fins (7), and heat absorbing fins (7) are rectangular sheet structure, from center to surrounding linear extension.
6. a kind of soil thermo-electric generation experimental provision according to claim 1, it is characterised in that radiated in gravity assisted heat pipe (8)
Sleeve (10) is employed between end and thermo-electric generation sheet (9), bush material is silver, copper.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720822023.XU CN206990712U (en) | 2017-07-09 | 2017-07-09 | A kind of soil thermo-electric generation experimental provision |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720822023.XU CN206990712U (en) | 2017-07-09 | 2017-07-09 | A kind of soil thermo-electric generation experimental provision |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206990712U true CN206990712U (en) | 2018-02-09 |
Family
ID=61404812
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720822023.XU Expired - Fee Related CN206990712U (en) | 2017-07-09 | 2017-07-09 | A kind of soil thermo-electric generation experimental provision |
Country Status (1)
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107091963A (en) * | 2017-07-09 | 2017-08-25 | 北京林业大学 | A kind of soil thermo-electric generation experimental provision |
| CN108663227A (en) * | 2018-07-26 | 2018-10-16 | 农业部南京农业机械化研究所 | A kind of soil radio frequency sterilizing equipment decontaminating apparatus test platform and method |
| CN113138376A (en) * | 2021-05-21 | 2021-07-20 | 中国科学院长春光学精密机械与物理研究所 | Device for automatically correcting thermo-optic of laser radar |
-
2017
- 2017-07-09 CN CN201720822023.XU patent/CN206990712U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107091963A (en) * | 2017-07-09 | 2017-08-25 | 北京林业大学 | A kind of soil thermo-electric generation experimental provision |
| CN107091963B (en) * | 2017-07-09 | 2023-08-04 | 北京林业大学 | Soil thermoelectric generation experimental apparatus |
| CN108663227A (en) * | 2018-07-26 | 2018-10-16 | 农业部南京农业机械化研究所 | A kind of soil radio frequency sterilizing equipment decontaminating apparatus test platform and method |
| CN108663227B (en) * | 2018-07-26 | 2023-12-05 | 农业部南京农业机械化研究所 | Soil radio frequency disinfection equipment test platform and method |
| CN113138376A (en) * | 2021-05-21 | 2021-07-20 | 中国科学院长春光学精密机械与物理研究所 | Device for automatically correcting thermo-optic of laser radar |
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Granted publication date: 20180209 Termination date: 20190709 |