CN205352979U - Protection hot plate method plane table thermo -conductivity meter - Google Patents
Protection hot plate method plane table thermo -conductivity meter Download PDFInfo
- Publication number
- CN205352979U CN205352979U CN201521046928.XU CN201521046928U CN205352979U CN 205352979 U CN205352979 U CN 205352979U CN 201521046928 U CN201521046928 U CN 201521046928U CN 205352979 U CN205352979 U CN 205352979U
- Authority
- CN
- China
- Prior art keywords
- temperature
- thermocouple
- control unit
- tracking control
- solid
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn - After Issue
Links
Abstract
The utility model belongs to the technical field of measuring instrument and specifically relates to a protection hot plate method plane table thermo -conductivity meter. The utility model discloses the voltage input method of protecting heating unit heating power of improving on current conductometer basis is according to the automatic follow -up of measurement unit hot side temperature. Improve the mobile heat exchange mode of cooling unit cooling water, improve the cold -boundary temperature accuracy of equalization. Improve a test hot side, huyashi -chuuka (cold chinese -style noodles), protection heating unit temperature measurement precision, adopt digital electric force measuring instrument to improve the protection hot plate method plane table thermo -conductivity meter that the measurement unit adds thermoelectric power measurement precision. The utility model relates to an easy operation does not need empirical data. The cooling water flows rationally, and the chilling temperature is even, and the difference in temperature is little. Temperature measurement, it is accurate that the measurement unit adds thermoelectric power measurement, the accurate mW level that arrives of electric power measurement. Thereby coefficient of heat conductivity detects the protection hot plate method plane table thermo -conductivity meter that the precision improves greatly.
Description
Technical field
This utility model relates to measuring instrument field, specifically a kind of Guarded hot plate plate heat conduction coefficient measuring instrument device.
Background technology
Heat conductivity is an important parameter of adiabator, especially relates to the transmission of heat in chemical industry, building trade, and accurately measuring of heat conductivity is even more important.Heat conductivity is the function of material own temperature, is generally adopted experimental technique and determines, is broadly divided into steady state method and cold store enclosure.Wherein, Guarded hot plate is a kind of steady state measurement method of standard; it is applicable to measure dry test specimen; it is widely used in engineering, national defence and college teaching experiment; wide with its temperature range width, range, without measuring unit being carried out the advantage attention always such as demarcation, so occurring in that based on the thermal conductivity measurement instrument that stable state protects hot plate method to develop.As: grant number CN20270795U flat band method conductometer utility model patent.
In currently used double-test-piece protection hot plate method Stable Flat Measuring Instrument for Thermal Conductivity use procedure, it has been found that there are the following problems affects its plate heat conduction coefficient determination precision, it is necessary to improve.First, the protection heating unit heats power for test specimen side insulated heat manually changes.Operator to empirically determine the protection heating unit heats power of the insulated heat at each test temperature, inputs corresponding voltage value.The people's operation lacked experience, the excessive generation thermal inertia of input voltage is impacted, big at the upper and lower amplitude in thermal balance position, not easily stable.The too small heat of input voltage value is followed the tracks of temperature and is not caught up with, and heat balance time is long, it is achieved test specimen periphery thermal insulation is stitched zero temperature difference and quickly followed the tracks of difficulty.Adiabatic bad, produce additional heat flow field and distort.The edge of heating unit and test specimen is adiabatic bad makes heat flow field in test specimen deviate the root of one-dimensional heat flow field, is also one of the principal element of this kind of apparatus measures measurement error.Its two, its cooling unit cooling water inlet of currently used instrument and outlet are in the same side, and water flow path is unreasonable, and it is relatively big that cooling water inlet and outlet exist the temperature difference, produce cold-boundary temperature inconsistent, cause that in test specimen, heat flow field heat flow density is uneven.Its three, this instrument metering units heating electric power measurement use pointer-type power meter.This table minimum range 37.5W, dial scale 75 lattice, every lattice instruction 0.5W, below 0.5W precision to estimate reading.This instrument measures heating electric power scope 0～10W at ordinary times, within the 27% of minimum range, is the poor region of the analog measurement linearity, and certainty of measurement is bad.
In plate heat conduction coefficient measurement process, the uniformity of flat test piece both sides temperature, accuracy and give two parameter errors of flat test piece heating power the impact of heat conductivity result of calculation is very big.Therefore reducing these generation bias factors that currently used double-test-piece protection hot plate method Stable Flat Measuring Instrument for Thermal Conductivity exists, the accuracy improving plate heat conduction instrument parameter measurement is extremely important.
Summary of the invention
This utility model provides a kind of on existing double-test-piece protection hot plate method Stable Flat Measuring Instrument for Thermal Conductivity basis, improves the voltage input method of protection heating unit heats power, automatically follows up according to metering units hot-face temperature.Improve cooling unit flow of cooling water heat exchange mode, improve the cold-boundary temperature accuracy of equalization.Improve test block hot side, huyashi-chuuka (cold chinese-style noodles), protection heating unit temperature measurement accuracy, adopt digital electric force measuring instrument to improve the Guarded hot plate plane table thermo of metering units heating electric power certainty of measurement.
Technical solutions of the utility model accompanying drawings is as follows: a kind of Guarded hot plate plane table thermo; this conductometer includes cooling unit 1, soaking plate 2, huyashi-chuuka (cold chinese-style noodles) thermocouple 4, follows the tracks of thermocouple 5, hot side thermocouple 6, protection heater 7 and heating metering units 8, and described cooling unit 1, soaking plate 2, test block 3, huyashi-chuuka (cold chinese-style noodles) thermocouple 4, to follow the tracks of thermocouple 5, hot side thermocouple 6 be symmetrical above and below arrange two identical sets relative to protection heater 7 and heating metering units 8；Wherein protection heater 7 and heating metering units 8 are arranged in middle same plane；Described huyashi-chuuka (cold chinese-style noodles) thermocouple 4 is arranged in the soaking plate 2 of cooling surface and multipoint-parallel；Described hot side thermocouple 6 is arranged in the soaking plate 2 of heating surface, and multipoint-parallel corresponding with heating metering units 8 position；Described thermocouple 5 of following the tracks of is arranged in the soaking plate 2 of heating surface, and multipoint-parallel corresponding with protection heater 7 position；This conductometer also includes automatic control system；Described automatic control system includes air switch 13, alternating voltage pressure regulator 14, power measurement instrument 15, temperature tracking control unit 16, resistance 17, solid-state relay 18, solid-state voltage regulator 19, A.C. voltmeter 20 and temperature indicator 21；One input of wherein said temperature tracking control unit 16 is connected with hot side thermocouple 6, and the other end of hot side thermocouple 6, for measuring point, measures test block 3 hot-face temperature；Another input of temperature tracking control unit 16 is connected with following the tracks of thermocouple 5, follows the tracks of the other end of thermocouple 5 for measuring point, measures protection heater 7 hot-face temperature；One outfan of described temperature tracking control unit 16 is connected with resistance 17 and solid-state voltage regulator 19；Another outfan is connected with solid-state relay 18, and two outfans are connected with voltmeter 20 and protection heater 7；Described air switch 13 is connected with alternating voltage pressure regulator 14, temperature tracking control unit 16 and temperature indicator 21 respectively；Connect between described power measurement instrument 15 current input terminal with voltage regulator 14 and heating metering units 8, in parallel between voltage input end with heating metering units 8；Described temperature indicator 21 input is connected with huyashi-chuuka (cold chinese-style noodles) thermocouple 4, and the other end of huyashi-chuuka (cold chinese-style noodles) thermocouple 4, for measuring point, measures test block 3 coldface temperature.
Described temperature tracking control unit 16 adds a temperature pick-up output module, it is temperature pick-up outfan with resistance 17 connected port, this temperature pick-up output module one resistance 17 of series connection, power taking hinders the voltage signal command potential as solid-state voltage regulator (19) at 17 two ends；Described temperature tracking control unit 16 is switching signal outfan with solid-state relay 18 connected port, exports one and control protection heater 7 and control the switching signal of the open and close in loop and dutycycle.
On described temperature tracking control unit 16, the electric current of temperature pick-up output module is 4mA～20mA, is the temperature pick-up according to hot side thermocouple 6.
Described cooling unit 1 is that the snakelike plate of water jacket is divided into two regions；Being provided above two intake tunnels and left intake tunnel 9 and right intake tunnel 11 at water jacket, the water inlet of two intake tunnels is that diagonal is arranged；Described left and right intake tunnel 9,11 is arranged on cooling unit water jacket panel, and the position of each pipelined channel that corresponding snakelike plate is formed is drilled with hole, and the diameter of hole is different；It is that cornerwise position arranges corresponding left and right exhalant canal 10,12 with water inlet in water jacket side, two bursts of cooling water cross flow one.
The current measuring range of described power measurement instrument 15 is 0mA～5000mA.
This utility model patent provides the benefit that:
(1), this utility model patent formula is when the making of this Guarded hot plate plane table thermo, debugging; ambient temperature is used according to this Guarded hot plate plane table thermo; the associated temperature parameters such as the thermal capacity of this instrument, specific heat calculate, the protection heating unit heats power curve of the empirically determined insulated heat of Binding experiment.The protection heating unit heats power of the insulated heat at each test temperature that operator to be empirically determined; input corresponding voltage value, become the function of this test temperature, become the signal of telecommunication by measuring temperature pick-up; instrument, from motion tracking, inputs corresponding voltage value.In use just need not empirically determine the protection heating unit heats power of insulated heat at each test temperature.For unfamiliar operator; particularly student; as long as by the electrical power changing heating metering units; it is transferred to the temperature oneself surveyed; the Guarded hot plate plane table thermo of this programme will automatically determine the protection heating unit heats power of corresponding insulated heat according to the temperature to survey, makes insulated heat face form zero temperature difference.Quickly, accurately.Simple to operate.
(2), flow of cooling water reasonable, chilling temperature is uniform, has a narrow range of temperature.Measure homogeneous temperature, accurately.
(3), metering units heating electric power measure accurately, electric power measurement is accurate to mW level.Thus, heat conductivity accuracy of detection is greatly improved.
Accompanying drawing explanation
Fig. 1 is this utility model structural representation；
Fig. 2 is this utility model cooling unit structural representation；
Fig. 3 is this utility model electric control system wiring diagram.
In figure: 1, cooling unit；2, soaking plate；3, test block；4, huyashi-chuuka (cold chinese-style noodles) thermocouple；5, thermocouple is followed the tracks of；6, hot side thermocouple；7, protection heater；8, heating metering units；9, left intake tunnel；10, left outlet；11, right intake tunnel；12, right outlet；13, air switch；14, alternating voltage pressure regulator；15, power measurement instrument；16, temperature tracking control unit；17, resistance；18, solid-state relay；19, solid-state voltage regulator；20, alternating current buckling；21, temperature indicator.
Detailed description of the invention
Consult Fig. 1, Fig. 3; a kind of Guarded hot plate plane table thermo; this conductometer includes cooling unit 1, soaking plate 2, huyashi-chuuka (cold chinese-style noodles) thermocouple 4, follows the tracks of thermocouple 5, hot side thermocouple 6, protection heater 7, heating metering units 8 and electric control system, and described cooling unit 1, soaking plate 2, test block 3, huyashi-chuuka (cold chinese-style noodles) thermocouple 4, to follow the tracks of thermocouple 5, hot side thermocouple 6 be symmetrical above and below arrange two identical sets relative to protection heater 7 and heating metering units 8；Wherein protection heater 7 and heating metering units 8 are arranged in middle same plane；Described huyashi-chuuka (cold chinese-style noodles) thermocouple 4 is arranged in the soaking plate 2 of cooling surface and multipoint-parallel；Described hot side thermocouple 6 is arranged in the soaking plate 2 of heating surface, and multipoint-parallel corresponding with heating metering units 8 position；Described thermocouple 5 of following the tracks of is arranged in the soaking plate 2 of heating surface, and multipoint-parallel corresponding with protection heater 7 position.
This utility model is protected on hot plate method stable state flat board thermal conductivity coefficient analyzer basis at existing double-test-piece, adds the automatic control system measuring test specimen side insulated heat.Described automatic control system includes air switch 13, alternating voltage pressure regulator 14, power measurement instrument 15, temperature tracking control unit 16, resistance 17, solid-state relay 18, solid-state voltage regulator 19, A.C. voltmeter 20 and temperature indicator 21.
One input of described temperature tracking control unit 16 is connected with hot side thermocouple 6, and the other end of hot side thermocouple 6, for measuring point, measures test block 3 hot-face temperature；Another input of temperature tracking control unit 16 is connected with following the tracks of thermocouple 5, follows the tracks of the other end of thermocouple 5 for measuring point, measures protection heater 7 hot-face temperature.
One outfan of described temperature tracking control unit 16 is connected with resistance 17 and solid-state voltage regulator 19, and the electric current of described temperature tracking control unit 16 temperature pick-up output module is 4mA～20mA, is the temperature pick-up according to hot side thermocouple 6.This output module one resistance 17 of series connection, power taking hinders the voltage signal command potential as solid-state voltage regulator 19 at 17 two ends, controls protection heater 7 maximum output voltage (peak power output) under corresponding temperature.Another outfan of temperature tracking control unit 16 is connected with solid-state relay 18, controls the open and close of solid-state relay 18, and then controls to protect the switching of heater 7 circuit, protects heater 7 electromotive power output duration with the Duty ratio control of solid-state relay 18.
Two outfans of temperature tracking control unit 16 are connected with voltmeter 20 and protection heater 7；Described air switch 13 is connected with alternating voltage pressure regulator 14, temperature tracking control unit 16 and temperature indicator 21 respectively.
Connect between described power measurement instrument 15 current input terminal with voltage regulator 14 and heating metering units 8, in parallel between voltage input end with heating metering units 8；Described temperature indicator 21 input is connected with huyashi-chuuka (cold chinese-style noodles) thermocouple 4, and the other end of huyashi-chuuka (cold chinese-style noodles) thermocouple 4, for measuring point, measures test block 3 coldface temperature.Temperature indicator 21 read test part 3 coldface temperature.Remove test block coldface temperature and Thermal protection and follow the tracks of permutator between temperature, it is to avoid change the error of remnants voltage and maloperation during student experimenting operation each time.Power measurement instrument 15 instead of existing pointer-type power meter, and the current measuring range of power measurement instrument 15 is set in 0mA～5000mA, and power measurement is accurate to mW, and numerical value shows.
Wherein said temperature tracking control unit 16 increases a temperature pick-up output module is set, this module exports at an outfan according to hot side thermocouple 6 input temp signal transmitting direct current weak current signal, the electric current of this temperature pick-up output module is 4mA～20mA, this temperature pick-up output module is changed into voltage signal by a resistance 17 of having connected, power taking hinders the voltage signal command potential as solid-state voltage regulator 19 at 17 two ends, control the maximum voltage peak value output angle of solid-state voltage regulator 19, thus controlling the protection heater 7 maximum output voltage (i.e. power) size at this test temperature.One switching signal of another outfan output on described temperature tracking control unit 16, controls protection heater 7 and controls the open and close in loop and dutycycle, it is achieved control the thermal power protecting heater 7 increase in demand according to temperature.This avoid artificial input value excessive, or too small cause that insulated heat is bad, the measurement error caused.Simultaneously also heat balance time, shortens the testing time.Particularly, student interior when laboratory can do several groups of data more, carries out analysis of the accuracy.This switching signal is that test block 3 hot-face temperature measured by temperature tracking control unit 16 heat-obtaining fever sensation of the face galvanic couple 6, follows the tracks of thermocouple 5 and measures protection heater 7 hot-face temperature, the two temperature difference, calculates through PID and convert output.Protection heater 7 is so made to follow the tracks of metering units hot-face temperature with rational heating electric power, firing rate, it is to avoid the excessive generation thermal inertia of input voltage occurred when manually adjusting is impacted, big at the upper and lower amplitude in thermal balance position, not easily stable；The too small heat of input voltage value is followed the tracks of temperature and is not caught up with, and heat balance time is long, and test specimen periphery thermal insulation is stitched zero temperature difference and quickly followed the tracks of difficulty；Ensure insulated heat measure.
Consulting Fig. 2, described cooling unit 1 is that the snakelike plate of water jacket is divided into two regions；Being provided above two intake tunnels and left intake tunnel 9 and right intake tunnel 11 at water jacket, the water inlet of two intake tunnels is that diagonal is arranged；On described left and right intake tunnel 9,11 region cooling unit water jacket panel, the position of each pipelined channel that corresponding snakelike plate is formed is drilled with hole, and empty diameter is different, and the diameter in hole is through calculating, it is ensured that the flow of each pipelined channel is identical；It is that cornerwise position arranges corresponding left and right exhalant canal 10,12 with water inlet in water jacket side.The cooling water turnover of such water jacket two parts is staggered, cooling equilibrium, homogeneous temperature.
The temperature tracking control unit that temperature tracking control unit 16 can select model to be AL808, increases a temperature pick-up output module, the direct current weak current of output 4mA～20mA on former basis.
The power measurement instrument that power measurement instrument 15 can select model to be 601, current measuring range is 0mA～5000mA.
The temperature indicator that temperature indicator 21 can select model to be 501.
Operation principle of the present utility model is: this Novel protective hot plate method plane table thermo is debugged before coming into operation.First using ambient temperature according to this Guarded hot plate plane table thermo, the associated temperature parameter such as the thermal capacity of this instrument, specific heat calculates, it is determined that the protection heating unit heats power curve of insulated heat, and Data correction by experiment.The voltage value of the protection heating unit heats power of the insulated heat at each test temperature that operator to be empirically determined; become the function of this test temperature; the Clamping voltages signal of solid-state voltage regulator, the voltage value that solid-state voltage regulator output is corresponding is become by measurement temperature pick-up.In use just need not empirically determine the protection heating unit heats power of insulated heat at each test temperature.For unfamiliar operator, particularly student, as long as by the electrical power changing heating metering units, being transferred to the temperature oneself surveyed.Determine instrument test part 3 temperature range, and by some for Range of measuring temp decile parts.The command potential input of solid-state voltage regulator 19 is disconnected, and accesses the DC voltage potentiometer of an interim debugging.The output voltage of the alternating voltage pressure regulator 14 of debugging heating metering units 8 heater, makes test block hot-face temperature balance in each temperature province to measure.The hot-face temperature of test block 3 is measured by hot side thermocouple 6, the coldface temperature of test block 3 is measured by huyashi-chuuka (cold chinese-style noodles) thermocouple 4, and measurement data shows on temperature difference tracking control unit 16 and temperature indicator 21.Hand adjustment DC voltage potentiometer, controls the command potential input of solid-state voltage regulator 19, makes the output voltage of solid-state voltage regulator 19 meet the electrical power quickly following the tracks of temperature difference.The output voltage values of solid-state voltage regulator 19 shows on A.C. voltmeter 20.Because the thermal capacity of each experimental apparatus is different, the thermal power needed at different temperatures is different.Linear rule is substantially conformed at low-temperature region (less than 100 DEG C).Adiabatic test specimen Range of measuring temp is also at low-temperature region.Record after the optimum voltage value of each test temperature spot protection heater 7; the command potential input of solid-state voltage regulator 19 is removed the DC voltage potentiometer of interim debugging; access resistance 17 two ends that the direct current weak current (4～20mA) of temperature difference tracking control unit 16 output is connected, as the command potential of solid-state voltage regulator 19.The maximum command potential of the solid-state voltage regulator that the optimum voltage value of protection heater is corresponding during according to maximum range; it is corresponding with temperature difference tracking control unit 16 exports direct current weak current (20mA); resistance 17 in the series connection of this direct current weak current (4～20mA) outfan; make the voltage signal at resistance 17 two ends be consistent with the command potential of solid-state voltage regulator 19, control protection heater output voltage (i.e. power) size.Protection heater 7 controls the deviation between electromotive power output and actual test electrical power, controls switching signal output by the original temperature difference of temperature difference tracking control unit 16 and accesses solid-state relay 18, carrys out quasi-complement by the dutycycle of solid-state relay 18.If test block 3 hot-face temperature is T1, it is T2 that protection hot side follows the tracks of temperature, and as (T1-T2) 0 for accounting for, solid-state relay 18 closes, and is empty during (T1-T2)≤0, and solid-state relay 18 disconnects.Control protection heater 07 electromotive power output duration.1 minute 50 cycle.So, any user all need not adjust protection heater output voltage (i.e. power) size by rule of thumb.
The heating voltage of metering units 8, electrical power electricity consumption force measuring instrument 15 are measured, and numerical value shows, need not estimate reading.Current measuring range is set in 0～5000mA, and power measurement is accurate to mW.The magnitude of voltage of protection heater 7 is measured by A.C. voltmeter 20, and numerical value shows.Test block 3 hot-face temperature hot side thermocouple 6 is measured, and on temperature difference tracking control unit 16, numerical value shows.Test block 3 coldface temperature huyashi-chuuka (cold chinese-style noodles) thermocouple 4 is measured, and on temperature indicator 21, numerical value shows.Protection hot side tracking temperature tracking thermocouple 5 is measured numerical value on temperature difference tracking control unit 16 and is shown.Remove conversion open-loop, reduce error link, reduce maloperation factor.This utility model is a kind of novel Guarded hot plate plane table thermo, and this conductometer is easy and simple to handle, and measurement data is accurate.
Claims (5)
1. a Guarded hot plate plane table thermo; this conductometer includes cooling unit (1), soaking plate (2), huyashi-chuuka (cold chinese-style noodles) thermocouple (4), follows the tracks of thermocouple (5), hot side thermocouple (6), protection heater (7) and heating metering units (8), described cooling unit (1), soaking plate (2), test block (3), huyashi-chuuka (cold chinese-style noodles) thermocouple (4), follow the tracks of thermocouple (5), hot side thermocouple (6) is relative to protection heater (7) and to heat metering units (8) be symmetrical above and below arrange two identical sets；Heater (7) and heating metering units (8) is wherein protected to be arranged in middle same plane；Described huyashi-chuuka (cold chinese-style noodles) thermocouple (4) is arranged in the soaking plate (2) of cooling surface and multipoint-parallel；Described hot side thermocouple (6) is arranged in the soaking plate (2) of heating surface, and multipoint-parallel corresponding with heating metering units (8) position；Described tracking thermocouple (5) is arranged in the soaking plate (2) of heating surface, and multipoint-parallel corresponding with protection heater (7) position；It is characterized in that, this conductometer also includes automatic control system；Described automatic control system includes air switch (13), alternating voltage pressure regulator (14), power measurement instrument (15), temperature tracking control unit (16), resistance (17), solid-state relay (18), solid-state voltage regulator (19), A.C. voltmeter (20) and temperature indicator (21)；One input of wherein said temperature tracking control unit (16) is connected with hot side thermocouple (6), and the other end of hot side thermocouple (6), for measuring point, measures test block (3) hot-face temperature；Another input of temperature tracking control unit (16) is connected with following the tracks of thermocouple (5), follows the tracks of the other end of thermocouple (5) for measuring point, measures protection heater (7) hot-face temperature；One outfan of described temperature tracking control unit (16) is connected with resistance (17) and solid-state voltage regulator (19)；Another outfan is connected with solid-state relay (18), and two outfans are connected with voltmeter (20) and protection heater (7)；Described air switch (13) is connected with alternating voltage pressure regulator (14), temperature tracking control unit (16) and temperature indicator (21) respectively；Connect between described power measurement instrument (15) current input terminal with voltage regulator (14) and heating metering units (8), in parallel between voltage input end with heating metering units (8)；Described temperature indicator (21) input is connected with huyashi-chuuka (cold chinese-style noodles) thermocouple (4), and the other end of huyashi-chuuka (cold chinese-style noodles) thermocouple (4), for measuring point, measures test block (3) coldface temperature.
2. a kind of Guarded hot plate plane table thermo according to claim 1, it is characterized in that, described temperature tracking control unit (16) adds a temperature pick-up output module, it is temperature pick-up outfan with resistance (17) connected port, this temperature pick-up output module one resistance (17) of series connection, the voltage signal at power taking resistance (17) two ends is as the command potential of solid-state voltage regulator (19)；Described temperature tracking control unit (16) is gone up and solid-state relay (18) connected port is switching signal outfan, exports a switching signal controlling to protect heater 7 to control the open and close in loop and dutycycle.
3. a kind of Guarded hot plate plane table thermo according to claim 2, it is characterized in that, the electric current of the upper temperature pick-up output module of described temperature tracking control unit (16) is 4mA～20mA, is the temperature pick-up according to hot side thermocouple (6).
4. a kind of Guarded hot plate plane table thermo according to claim 1, it is characterised in that described cooling unit (1) is that the snakelike plate of water jacket is divided into two regions；Being provided above two intake tunnels and left intake tunnel (9) and right intake tunnel (11) at water jacket, the water inlet of two intake tunnels is that diagonal is arranged；On described left and right intake tunnel (9,11) region cooling unit water jacket panel, the position of each pipelined channel that corresponding snakelike plate is formed is drilled with hole, and the diameter of hole is different；It is that cornerwise position arranges corresponding left and right exhalant canal (10,12) with water inlet in water jacket side, two bursts of cooling water cross flow one.
5. a kind of Guarded hot plate plane table thermo according to claim 1, it is characterised in that the current measuring range of described power measurement instrument (15) is 0mA～5000mA.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521046928.XU CN205352979U (en) | 2015-12-15 | 2015-12-15 | Protection hot plate method plane table thermo -conductivity meter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521046928.XU CN205352979U (en) | 2015-12-15 | 2015-12-15 | Protection hot plate method plane table thermo -conductivity meter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205352979U true CN205352979U (en) | 2016-06-29 |
Family
ID=56169144
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201521046928.XU Withdrawn - After Issue CN205352979U (en) | 2015-12-15 | 2015-12-15 | Protection hot plate method plane table thermo -conductivity meter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205352979U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105372292A (en) * | 2015-12-15 | 2016-03-02 | 吉林大学 | Plane table thermo-conductivity meter based on guarded hot plate method |
| CN106841287A (en) * | 2017-03-20 | 2017-06-13 | 湘潭大学 | A kind of High Accuracy Flat method measuring thermal conductivity device based on saturated vapor heating |
-
2015
- 2015-12-15 CN CN201521046928.XU patent/CN205352979U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105372292A (en) * | 2015-12-15 | 2016-03-02 | 吉林大学 | Plane table thermo-conductivity meter based on guarded hot plate method |
| CN106841287A (en) * | 2017-03-20 | 2017-06-13 | 湘潭大学 | A kind of High Accuracy Flat method measuring thermal conductivity device based on saturated vapor heating |
| CN106841287B (en) * | 2017-03-20 | 2019-06-11 | 湘潭大学 | A kind of High Accuracy Flat method measuring thermal conductivity device based on saturated vapor heating |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105588667B (en) | A kind of high-accuracy compensation by thermistor calibrating installation | |
| CN107101741A (en) | A kind of temp measuring system and method | |
| RU2013113171A (en) | MEASUREMENT OF TEMPERATURE OF A TECHNOLOGICAL FLUID | |
| CN107044999B (en) | Battery cell specific heat capacity testing system and method | |
| CN103558881B (en) | A kind of method and device heating blood in testing pipes | |
| CN105372292B (en) | A kind of Guarded hot plate plane table thermo | |
| CN102288316B (en) | Digital transformer winding temperature measuring device | |
| KR20000005423A (en) | Liquid metering | |
| CN205352979U (en) | Protection hot plate method plane table thermo -conductivity meter | |
| CN103868948A (en) | Method for correcting heat exchange power of heat conductivity tester through single-test piece guarded hot plate method | |
| CN104267060A (en) | Method for measuring heat conductivity of active heat-protection type calorimeter by virtue of quasi-steady-state method and correction method of active heat-protection type calorimeter | |
| CN106772186B (en) | A kind of substitution efficiency measurement method and system of double load waveguide calorimeters | |
| CN104749214A (en) | Transient plane source method-based constant-temperature heating bath device for measuring liquid thermal conductivity | |
| CN102435334B (en) | Method for measuring temperature of transformer winding | |
| CN103728546B (en) | The system of transistor life test acceleration and stabilization of operating point | |
| CN105021650A (en) | Device for measuring heat conduction coefficient by means of guarded hot plate method | |
| CN104122469B (en) | Method for increasing measured seebeck coefficient accuracy of thermoelectric material | |
| CN202119565U (en) | Standard constant temperature groove touch screen intelligent measurement and control and automatic metering detection system | |
| CN203629720U (en) | Thermal paint temperature detection device | |
| CN202018348U (en) | Temperature sensor comprehensive verification bench | |
| CN104064076A (en) | Experimental facility using unbalanced bridge to design electrical resistance thermometer | |
| CN204064363U (en) | A kind of sensor circuit for thermal type gas quality flow meter | |
| CN210720572U (en) | Rapid measuring device for resistance temperature coefficient of heating element | |
| CN209117203U (en) | A kind of Hull Welding temperature monitoring device | |
| CN206649794U (en) | Thermistor temp characteristic curve demonstrator |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20160629 Effective date of abandoning: 20180615 |