CN207924550U - A kind of constant-temperaturetest test device suitable for tobacco thermophysical property measurement - Google Patents
A kind of constant-temperaturetest test device suitable for tobacco thermophysical property measurement Download PDFInfo
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- CN207924550U CN207924550U CN201820039965.5U CN201820039965U CN207924550U CN 207924550 U CN207924550 U CN 207924550U CN 201820039965 U CN201820039965 U CN 201820039965U CN 207924550 U CN207924550 U CN 207924550U
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Abstract
A kind of constant-temperaturetest test device suitable for tobacco thermophysical property measurement, it is characterised in that：Oil bath system including sample bin, to provide constant temperature outside sample bin is the air-channel system and data collecting system that heated nitrogen is provided in sample bin storehouse, control system and computer.Oil bath system in the device can guarantee that nitrogen is passed through in sample bin by sample bin constant temperature, air-channel system, make tobacco sample starvation, while accelerating sample interior equalized temperature.Cycle oil bath and the nitrogen of room temperature~300 DEG C can be selected in the utility model, to realize the control to sample temperature and pyrolysis state.And cycle oil bath temperature and the parameters such as nitrogen flow and temperature can be adjusted respectively, effectively control the temperature and atmosphere in sample bin.The device adapts to a variety of test parameters, ensures that tobacco thermophysical property measurement environment temperature and atmosphere are constant under higher temperature conditions, is tobacco（Pyrolysis section）Thermophysical property measurement provides reliable and stable test platform.
Description
Technical field
Tobacco thermophysical property measurement the utility model is related to tobacco thermophysical property measurement field, especially temperature more than 100 DEG C,
More particularly to a kind of constant-temperaturetest test device and method suitable for tobacco thermophysical property measurement.
Background technology
Heating non-combustion-cigarette straw-made articles is a kind of novel strategic tobacco product, compared with traditional cigarette, usually can be incited somebody to action
Harmfulness reduces by 80%.Heating non-combustion-cigarette straw-made articles Mass and heat transfer problem is the key problem of product design and development, and tobacco
Hot physical property（Thermal coefficient, thermal diffusion coefficient and volumetric heat capacity etc.）It is closely related with conduction heat transfer process.Heat non-burning tobacco
Material system study on thermal property analyzes phenomenon of Heat, flue gas generation mechanism and product structure design are extremely important.
It is two important factors to heat the gentle atmosphere of temperature in non-burning tobacco material system thermophysical property measurement, and temperature is gentle
Whether atmosphere controllably directly affects the validity and reliability that tobacco heats thermophysical property measurement under non-burning state.Tobacco is a kind of heat
Quick property biological material can occur physically or chemically to change when temperature is higher, or even burning, this will certainly influence tobacco system
Hot physical property.Temperature control is accurate, atmosphere is controllable and measurement is conveniently the necessary item for heating non-burning tobacco material system study on thermal property
Part.
In conclusion tobacco thermal physical property parameter is to carry out phenomenon of Heat analysis, flue gas generation mechanism and product structure to set
The important foundation data of meter, and temperature and atmosphere are two important parameters of tobacco thermophysical property measurement under higher temperature conditions.Before
People is concentrated mainly on tobacco heat physical property under room temperature to the research of tobacco heat physical property, is seldom related to 100 DEG C or more tobacco heat physical property
Research.
Invention content
The above-mentioned deficiency of present situation and the prior art for tobacco study on thermal property, the purpose of this utility model are to provide one
Constant-temperaturetest test device of the kind suitable for tobacco thermophysical property measurement, to adapt to tobacco thermophysical property measurement under higher heating temperature condition
It needs.
The purpose of this utility model is achieved through the following technical solutions：It is a kind of suitable for tobacco thermophysical property measurement
Constant-temperaturetest test device, including sample bin, the oil bath system to provide constant temperature outside sample bin, be that heating nitrogen is provided in sample bin storehouse
The air-channel system and data collecting system of gas, control system and computer, the oil bath system include constant temperature circulating oil pump,
Oil bath case and respective cycle pipeline, constant temperature circulating oil pump make the conduction oil for reaching set temperature enter oil bath case, sample bin setting
In oil bath case；The air-channel system includes the nitrogen inlet duct road being connected to sample bin, outlet pipe and is arranged in nitrogen
Gas heater on gas air inlet pipeline；The data collecting system includes that the temperature being arranged on sample bin inlet, outlet passes
Sensor, temperature sensor and data collecting card on oil bath case are constituted；The control system includes being arranged in nitrogen inlet duct
The mass flow controller of road, the PID temperature controllers being arranged on gas heater, heater outlet air flow temperature sensor and
Relay；The data collecting system and control system are connected with computer.
The constant temperature circulating oil pump has heating and temperature controlling function.
The quantity of sample bin is two, is arranged in oil bath case, is connected to air-channel system in sample bin, in two samples
It is both provided with temperature sensor on the gas outlet in storehouse.
It is coated with heat preserving and insulating material in oil bath system and the respective line of air-channel system
In the present invention, the control mode of control system is controlled using closed loop.Thermostatical storehouse uses PID Self-tuning Systems
Constant-temperature control method, the temperature value by feeding back temperature sensor measurement controls the break-make of relay compared with setting value
And then control whether heater works.
The constant temperature test method of tobacco thermophysical property measurement is carried out using above-mentioned apparatus is：By respectively to oil bath temperature, nitrogen
The parameters such as throughput and temperature control effectively so that sample bin ambient temperature and the nitrogen temperature for entering sample bin keep permanent
Definite value improves tobacco heat object under higher temperature conditions to ensure the stabilization of tobacco sample temperature and inert atmosphere in sample bin
Property measure validity and reliability.
The constant-temperaturetest test device suitable for tobacco thermophysical property measurement using the above structure, feature are：
1) constant temperature circulating oil pump has heating and temperature controlling function, and the pipeline being connect with oil bath case is cladded with thermal insulation material, and one
The conduction oil of constant temperature degree is passed through oil bath case, and sample bin in oil bath case is made to maintain the temperature of setting, and control system uses closed loop control
System, temperature regulating range are room temperature~300 DEG C, and temperature control precision is ± 0.2 DEG C.
2) nitrogen flow being passed through is controlled by mass flow controller, keeps sample bin interior and oxygen-barrier, to protect
It demonstrate,proves tobacco sample thermophysical property measurement environment temperature and atmosphere keeps stablizing, while controlling being passed through gas temperature, to accelerate
Sample to be tested internal temperature reaches setting condition.
The advantages of the utility model, is as follows：
Sample bin temperature control is aided with heated nitrogen and is passed through, temperature control range is wide using cycle oil bath heating（Room temperature~300 DEG C）,
Temperature-controlled precision is high；It is passed through nitrogen to ensure tobacco sample starvation and accelerate sample interior equalized temperature, it is ensured that in test process
It does not burn, ensures that measurement result is effectively reliable.
Description of the drawings
Fig. 1 is the constant-temperaturetest test device structural schematic diagram suitable for tobacco thermophysical property measurement of the utility model.
In Fig. 1：1- constant temperature circulating oil pumps；2- oil bath casees；3- sample bins；3.1- sample bin inlet air flow temperature sensors；
3.2- oil bath case temperature sensors；3.3- sample bin exit flow temperature sensors；4- gas heaters；5- heater outlet gas
Flow temperature sensor；6- mass flow controllers；7-PID temperature controllers；8- relays；9- data collecting cards；10- computers.
Specific implementation mode
The utility model is described further below in conjunction with attached drawing embodiment：
As described in Figure 1：A kind of constant-temperaturetest test device suitable for tobacco thermophysical property measurement, including sample bin 3, be sample bin
Outside provides oil bath system, the air-channel system to provide heated nitrogen in sample bin storehouse and data collecting system, the control of constant temperature
System processed and computer 10.
The oil bath system includes constant temperature circulating oil pump 1, oil bath case 2 and respective cycle pipeline, and constant temperature circulating oil pump 1 makes to reach
Conduction oil to set temperature enters oil bath case 2, and sample bin 3 is arranged in oil bath case 2；
The air-channel system include the nitrogen inlet duct road being connected to sample bin, outlet pipe and setting nitrogen into
Gas heater on air pipe；
The data collecting system includes the temperature sensor 3.1,3.3 being arranged on sample bin inlet, outlet, oil bath case
On temperature sensor 3.2 and data collecting card 9 constitute；
The control system includes the mass flow controller 6 being arranged on nitrogen inlet duct road, setting in gas heating
PID temperature controllers 7, heater outlet air flow temperature sensor 5 on device 4 and relay 8；The data collecting system and control are
System is connected with computer 10.
The constant temperature circulating oil pump 1 has heating and temperature controlling function.
The quantity of the sample bin 3 is two, is arranged in oil bath case 2, is connected to air-channel system, in two sample bins
Gas outlet on be both provided with temperature sensor 3.3.
It is coated with heat preserving and insulating material in oil bath system and the respective line of air-channel system
The specific works step and control process of the utility model are as follows：
Referring to Fig. 1, the conduction oil that constant temperature circulating oil pump 1 is up to set temperature is recycled into oil bath case 2, while passing through oil
Bath temperature sensor 3.2 monitors fuel tank heat conduction oil temperature；Nitrogen carries out flow control by mass flow controller 6, through respective tube
Road is passed through gas heater and is heated to certain temperature, into sample bin 3, keeps stablizing to control inert atmosphere in sample bin, together
Shi Caiyong sample bin inlet air flows temperature sensor 3.1 monitors sample bin respectively with sample bin exit flow temperature sensor 3.3
Gas inlet temperature and exit flow temperature；Heater outlet gas is acquired by gas heater exit flow temperature sensor 5
Temperature data is sent to PID temperature controllers 7, compares observed temperature and setting value, and 8 break-make of relay is controlled according to comparison result,
Control 4 heated condition of gas heater；Above-mentioned each temperature, data on flows are transferred to by data collecting card 9 in computer 10
It is stored and processed.
By controling effectively respectively to parameters such as oil bath temperature, nitrogen flow and temperature so that 3 surrounding temperature of sample bin
Degree and the nitrogen temperature for entering sample bin 3 keep constant value, to ensure the stabilization of its interior tobacco sample temperature and inert atmosphere,
Improve the validity and reliability of tobacco thermophysical property measurement under higher temperature conditions.
Claims (5)
1. a kind of constant-temperaturetest test device suitable for tobacco thermophysical property measurement, it is characterised in that：Including sample bin, for outside sample bin
Portion provides oil bath system, the air-channel system to provide heated nitrogen in sample bin storehouse and data collecting system, the control of constant temperature
System and computer, the oil bath system include constant temperature circulating oil pump, oil bath case and respective cycle pipeline, and constant temperature circulating oil pump makes
The conduction oil for reaching set temperature enters oil bath case, and sample bin is arranged in oil bath case；The air-channel system includes and sample bin
Nitrogen inlet duct road, outlet pipe and the gas heater being arranged on nitrogen inlet duct road of connection；The data acquisition
System includes the temperature sensor being arranged on sample bin inlet, outlet, the temperature sensor on oil bath case and data acquisition
Card is constituted；The control system includes the mass flow controller being arranged on nitrogen inlet duct road, is arranged in gas heater
On PID temperature controllers, heater outlet air flow temperature sensor and relay；The data collecting system and control system with
Computer is connected.
2. the constant-temperaturetest test device according to claim 1 suitable for tobacco thermophysical property measurement, it is characterised in that：The perseverance
Warm oil circulating pump has heating and temperature controlling function.
3. the constant-temperaturetest test device according to claim 1 suitable for tobacco thermophysical property measurement, it is characterised in that：Sample bin
Quantity be two, be arranged in oil bath case, be connected to air-channel system in sample bin, it is equal on the gas outlet of two sample bins
It is provided with temperature sensor.
4. the constant-temperaturetest test device according to claim 1 suitable for tobacco thermophysical property measurement, it is characterised in that：In oil bath
It is coated with heat preserving and insulating material in system and the respective line of air-channel system.
5. the constant-temperaturetest test device according to claim 1 suitable for tobacco thermophysical property measurement, it is characterised in that：Control system
System uses closed-loop control temperature regulating range for -300 DEG C of room temperature.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820039965.5U CN207924550U (en) | 2018-01-10 | 2018-01-10 | A kind of constant-temperaturetest test device suitable for tobacco thermophysical property measurement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820039965.5U CN207924550U (en) | 2018-01-10 | 2018-01-10 | A kind of constant-temperaturetest test device suitable for tobacco thermophysical property measurement |
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| CN207924550U true CN207924550U (en) | 2018-09-28 |
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| CN201820039965.5U Active CN207924550U (en) | 2018-01-10 | 2018-01-10 | A kind of constant-temperaturetest test device suitable for tobacco thermophysical property measurement |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108062135A (en) * | 2018-01-10 | 2018-05-22 | 中国烟草总公司郑州烟草研究院 | A kind of constant-temperaturetest test device and method suitable for tobacco thermophysical property measurement |
| CN110280094A (en) * | 2019-06-26 | 2019-09-27 | 中国科学院合肥物质科学研究院 | A kind of greasy dirt automatic cleaning apparatus for the quick water content detection of tobacco |
-
2018
- 2018-01-10 CN CN201820039965.5U patent/CN207924550U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108062135A (en) * | 2018-01-10 | 2018-05-22 | 中国烟草总公司郑州烟草研究院 | A kind of constant-temperaturetest test device and method suitable for tobacco thermophysical property measurement |
| CN110280094A (en) * | 2019-06-26 | 2019-09-27 | 中国科学院合肥物质科学研究院 | A kind of greasy dirt automatic cleaning apparatus for the quick water content detection of tobacco |
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