CN208505485U - A kind of surface temperature measurement instrument - Google Patents
A kind of surface temperature measurement instrument Download PDFInfo
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- CN208505485U CN208505485U CN201821086144.3U CN201821086144U CN208505485U CN 208505485 U CN208505485 U CN 208505485U CN 201821086144 U CN201821086144 U CN 201821086144U CN 208505485 U CN208505485 U CN 208505485U
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- 238000009529 body temperature measurement Methods 0.000 title claims abstract description 28
- 238000005259 measurement Methods 0.000 claims abstract description 102
- 239000000523 sample Substances 0.000 claims abstract description 21
- 230000005619 thermoelectricity Effects 0.000 claims description 2
- 230000005611 electricity Effects 0.000 claims 1
- 239000012530 fluid Substances 0.000 description 10
- 239000004020 conductor Substances 0.000 description 7
- 239000000463 material Substances 0.000 description 6
- 238000010438 heat treatment Methods 0.000 description 5
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- 238000013461 design Methods 0.000 description 2
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- 238000002474 experimental method Methods 0.000 description 2
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- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 238000012271 agricultural production Methods 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
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- 239000003814 drug Substances 0.000 description 1
- 238000005485 electric heating Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 238000004441 surface measurement Methods 0.000 description 1
- 238000004861 thermometry Methods 0.000 description 1
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Abstract
The utility model provides the surface temperature measurement instrument that a kind of error is small and measurement accuracy is high.Surface temperature temperature measurer includes probe and temperature measuring instrument, and probe includes temperature compensation means, feeler lever, measurement thermocouple and temperature-control heat couple；Temperature compensation means includes temperature controller and temperature compensation block, and temperature compensation block is set on the end face of one end of feeler lever, and the measurement end for measuring thermocouple is located at the outside of temperature compensation block；The cathode thermocouple wire of reference end of measurement thermocouple is electrically connected with the cathode thermocouple wire of the reference end of temperature-control heat couple, the positive thermocouple wire for measuring the reference end of thermocouple is connected with the cathode of temperature controller, the positive thermocouple wire of the reference end of temperature-control heat couple is connected with the anode of temperature controller, and the output end of temperature controller is connected with temperature compensation block；One end of temperature measuring instrument is connected to the positive thermocouple wire of the reference end of measurement thermocouple, and the other end of temperature measuring instrument is connected to the cathode thermocouple wire of the reference end of measurement thermocouple.
Description
Technical field
The utility model relates to thermometry field, in particular to a kind of surface temperature measurement instrument.
Background technique
The measurement of surface temperature is very important, and is the class that current research is least thorough, problem is most.?
In industrial and agricultural production and scientific experiment, the surface temperature of accurate measuring cell, material, structural member and apparatus casing is generally required,
And effectively incorporate the traceability system of country.Especially surface temperature is traced to the source the flat plate type electrothermal constant temperature system with high requirement
System, such as LED industry and the constant temperature electric heating platform of other precise electronic industry sealings, dispensing, the perseverance of biological medicine experiment
Warm heating plate, and the normative surface temperature source for surface temperature meter calibrating etc., still lack corresponding calibrating installation at present
Such as the standard surface temperature measurer of high-precision and high-stability, it is difficult to realize to working plate surface temperature accuracy, uniformity and wave
The accurate measurement of the measuring parameters such as dynamic property.
The temperature measurement error Producing reason of existing temperature measurer mainly has the following: one is due to being tested planar surface
Material and touch sensor thermal conductivity are different, place the destruction of thermal field original for planar surface after sensor, distort and draw
The error risen；The second is non-ideal between touch sensor and tested planar surface contacts, it is constantly present thermal resistance, due to heat
Error caused by the presence of resistance；The third is due to the different structure design of touch sensor and contact form, sensor
Temperature-sensitive point and the practical temperature measuring point for really needing thermometric always have a distance, thus caused error.
Utility model content
The small and high measurement accuracy surface temperature measurement the technical problem to be solved by the utility model is to provide a kind of error
Instrument.
In order to solve the above-mentioned technical problem, the technical solution adopted in the utility model are as follows:
A kind of surface temperature measurement instrument, including probe and temperature measuring instrument, it is described probe include temperature compensation means, feeler lever,
Measure thermocouple and temperature-control heat couple；
The temperature compensation means includes temperature controller and temperature compensation block, and the temperature compensation block is set to the one of feeler lever
On the end face at end, the measurement end of the measurement thermocouple is located at the outside of temperature compensation block, the thermocouple of the measurement thermocouple
Silk passes through temperature compensation block, and the measurement end of the temperature-control heat couple is set to the inside of temperature compensation block, the temperature-control heat couple
Reference end is set to the outside of temperature compensation block；
The cathode thermocouple of the reference end of the cathode thermocouple wire and temperature-control heat couple of the reference end of the measurement thermocouple
The positive thermocouple wire of silk electrical connection, the reference end of the measurement thermocouple is connected with the cathode of temperature controller, the temperature control
The positive thermocouple wire of the reference end of thermocouple is connected with the anode of temperature controller, the output end and temperature of the temperature controller
Compensation block is spent to be connected；
One end of the temperature measuring instrument is connected to the positive thermocouple wire of the reference end of measurement thermocouple, the temperature
The other end of measuring instrumentss is connected to the cathode thermocouple wire of the reference end of measurement thermocouple.
Further, the probe further includes heat collecting sheet, and the shape of the heat collecting sheet is band-like, the longitudinal direction of the heat collecting sheet
Section is arc, and the both ends of the heat collecting sheet of arc are connected with the end face of temperature compensation block, and the heat collecting sheet is along temperature-compensating
The axial direction of block and prominent towards the direction far from temperature compensation block, the measurement end of the measurement thermocouple are located at heat collecting sheet close to popping one's head in
One side center and form temperature-sensitive point.
It further, further include supporting leg, the supporting leg is " L " type, and one end of the supporting leg is connected with the side wall of feeler lever, institute
Be axially facing temperature compensation block of the other end along feeler lever of supporting leg is stated, the end of the other end of the supporting leg is tip.
It further, further include the other end being sheathed on from pouring weight on feeler lever and positioned at supporting leg and feeler lever from pouring weight
Between.
It further, further include hurricane globe, the hurricane globe is sheathed on feeler lever and is located at the institute between pouring weight and supporting leg
The opening of hurricane globe is stated towards temperature-compensating Block direction, the supporting leg and heat collecting sheet are located in hurricane globe.
Further, the number of the supporting leg is at least three.
Further, the conducting wire between the measurement thermocouple and temperature-control heat couple and temperature controller is respectively arranged on feeler lever
It is interior.
Further, the probe further includes elastic and limited post；
One end of the elastic is connected with the end face of temperature compensation block, and the other end of the elastic is mended towards far from temperature
Repay the direction of block and along the axially extending of temperature compensation block, the other end of the elastic, which supports, is set to heat collecting sheet close to temperature-compensating
In the one side of block；
The length of the limited post is less than the length of elastic, one end of the limited post and the end face phase of temperature compensation block
Even, between elastic and the edge of temperature compensation block, the limited post is arranged in parallel the limited post with elastic, described
The other end of limited post, which supports, is set to heat collecting sheet in the one side of temperature compensation block；
The number of the elastic is at least two, and the number of the limited post is at least two, the elasticity column symmetry
Setting, the limited post are symmetrical arranged.
The utility model has the beneficial effects that:
(1) sensor of the thermocouple as surface temperature measurement instrument, and thermal response small compared to surface thermal resistor sensor thermal capacity
Speed is fast, reaches that the thermally equilibrated time is short with surface to be measured, and the temperature measured is more acurrate；
(2) devise temperature compensation means, reduce measurement thermocouple heat dissipation so that measurement thermocouple as far as possible close to
The temperature on surface is surveyed, so that hot-fluid disappears or reduces, reduces the influence for treating master plate surface original thermal field, to obtain more quasi-
True temperature；
(3) guarantee that sensor is contacted with constant angle and pressure with surface to be measured equipped with from pouring weight at feeler lever, reduce and survey
The error of generation is artificially pressed when amount；
(4) external hurricane globe is added, ambient wind velocity is avoided to influence the thermal balance on surface to be measured；
(5) heat collecting sheet effectively reduces the influence to former thermal field along being laid by master plate isothermal level, while tight by elastic
It is pressed on the case where measured surface also reduces temperature-sensitive point at a distance from practical temperature measuring point, effectively improves non-ideal contact.
Detailed description of the invention
Fig. 1 is the side schematic view of the surface temperature measurement instrument of the utility model embodiment；
Fig. 2 is the structural schematic diagram of the temperature compensation means of the utility model embodiment；
Fig. 3 is the longitudinal cross-section schematic diagram under the surface temperature measurement instrument assembled state of the utility model embodiment；It (does not show anti-
Fan housing and from pouring weight)
Label declaration:
1, it pops one's head in；
11, temperature compensation means；111, temperature compensation block；112, temperature controller；
12, feeler lever；
13, thermocouple is measured；
14, temperature-control heat couple；
15, heat collecting sheet；151, temperature-sensitive point；
16, elastic；
17, limited post；
2, temperature measuring instrument；
3, supporting leg；
4, from pouring weight；
5, hurricane globe；
6, surface to be measured.
Specific embodiment
For technology contents, the objects and the effects that the utility model is described in detail, below in conjunction with embodiment and match
Attached drawing is closed to be explained.
When there are two types of different conductors or semiconductor groups into a circuit, when both ends are connected with each other, one end is known as working
End or measurement end, the other end are known as free end (also referred to as reference end) or cold end, will in circuit as long as the temperature at two nodes is different
An electromotive force is generated, the direction of the electromotive force and size are related with the temperature of the material of conductor and two contacts.This phenomenon claims
For " pyroelectric effect ", the circuit of two kinds of conductors composition is known as " thermocouple ", both conductors are known as " thermode ", generation it is electronic
Gesture is then known as " thermo-electromotive force ", and one of conductor is properly termed as positive thermocouple wire, another conductor is properly termed as cathode heat
Thermocouple wire.The measurement end or cold end of thermocouple described in the utility model refer to measurement end and reference that this field is known together
The meaning at end.
The design of the utility model most critical is: temperature compensation means is devised, for reducing export hot-fluid.
Fig. 1-3, a kind of surface temperature measurement instrument, including probe 1 and temperature measuring instrument 2 are please referred to, the probe 1 includes temperature
Compensation device 11, feeler lever 12, measurement thermocouple 13 and temperature-control heat couple 14；
The temperature compensation means 11 includes temperature controller 112 and temperature compensation block 111, the temperature compensation block 111
On the end face of one end of feeler lever 12, the measurement end of the measurement thermocouple 13 is located at the outside of temperature compensation block 111, described
The thermocouple wire for measuring thermocouple 13 passes through temperature compensation block 111, and the measurement end of the temperature-control heat couple 14 is set to temperature-compensating
The inside of block 111, the reference end of the temperature-control heat couple 14 are set to the outside of temperature compensation block 111；
The cathode heat of the reference end of the cathode thermocouple wire and temperature-control heat couple 14 of the reference end of the measurement thermocouple 13
The positive thermocouple wire of thermocouple wire electrical connection, the reference end of the measurement thermocouple 13 is connected with the cathode of temperature controller 112,
The positive thermocouple wire of the reference end of the temperature-control heat couple 14 is connected with the anode of temperature controller 112, the temperature control
The output end of device 112 is connected with temperature compensation block 111；
One end of the temperature measuring instrument 2 is connected to the positive thermocouple wire of the reference end of measurement thermocouple 13, described
The other end of temperature measuring instrument 2 is connected to the cathode thermocouple wire of the reference end of measurement thermocouple 13.
The working principle of the utility model are as follows: it is succinct for narration, the measurement end for measuring thermocouple is known as main measurement end, it will
The measurement end of temperature-control heat couple is known as auxiliary measurement end.
Illustrate the working principle of temperature compensation means first.Main measurement end is contacted with surface to be measured, and temperature measuring instrument is aobvious
Show the temperature that main measurement end measures, due to there are temperature difference, measured between main measurement end and reference end thermocouple itself with it is to be measured
It there is also temperature difference between surface, therefore measures between thermocouple and surface to be measured and there is export hot-fluid, export hot-fluid is to be measured
Surface flows through the reference end of main measurement end flow direction measurement thermocouple, this phenomenon with measurement thermocouple measurement end and reference end it
Between temperature difference increase and aggravate.
The temperature compensation means of the utility model includes temperature compensation block and temperature controller.Measure thermocouple and temperature control heat
In galvanic couple, all it is set to other than the reference end of the measurement end of measurement thermocouple, the reference end of measurement thermocouple and temperature-control heat couple
In temperature compensation block, the measurement end of temperature-control heat couple, i.e., auxiliary measurement end can measure the temperature of temperature compensation block, as a result, if
The temperature of main measurement end is greater than the temperature of auxiliary measurement end, it is meant that the temperature on surface to be measured is greater than the temperature of temperature compensation block at this time
Degree has the reference end that export hot-fluid measures thermocouple from the measurement end flow direction of measurement thermocouple.
The cathode thermocouple wire of the reference end of the measurement thermocouple and the reference end cathode thermocouple wire of temperature-control heat couple
The positive thermocouple wire of electrical connection, the reference end of the measurement thermocouple is connected with the cathode of temperature controller, the temperature control heat
The positive thermocouple wire of the reference end of galvanic couple is connected with temperature controller anode, in this way, if the temperature of main measurement end is greater than auxiliary
The temperature of measurement end, the output end of temperature controller will control temperature compensation block heating, until main measurement end and auxiliary measurement end
Temperature is identical namely the temperature of temperature compensation block is also identical as the temperature of main measurement end, there will be no export hot-fluids to be measured
Then the case where surface is flowed out passes through the temperature measuring instrument precise measurement surface temperature to be measured of connection measurement thermocouple.
Similarly, if the temperature of main measurement end is less than the temperature of auxiliary measurement end, the output end of temperature controller can also control temperature
Compensation block stopping heating being down to identical as the temperature of main measurement end.
Because the temperature on surface to be measured generally can be higher than room temperature, the temperature of temperature compensation block is not being heated in general
Surface temperature to be measured is not exceeded under state, so usually temperature compensation block elder generation heating temperature rises when actual measurement, if
Temperature be more than surface temperature to be measured, temperature compensation block heating stop temperature decline, again below after surface temperature to be measured again plus
Heat, infinite approach surface temperature to be measured, it is possible thereby to obtain more accurate measured value.
As can be seen from the above description, the utility model has the beneficial effects that:
(1) sensor of the thermocouple as surface temperature measurement instrument, and thermal response small compared to surface thermal resistor sensor thermal capacity
Speed is fast, reaches that the thermally equilibrated time is short with surface to be measured, and the temperature measured is more acurrate；
(2) devise temperature compensation means, reduce measurement thermocouple heat dissipation so that measurement thermocouple as far as possible close to
The temperature on surface is surveyed, so that hot-fluid disappears or reduces, reduces the influence for treating master plate surface original thermal field, to obtain more quasi-
True temperature；
(3) guarantee that sensor is contacted with constant angle and pressure with surface to be measured equipped with from pouring weight at feeler lever, reduce and survey
The error of generation is artificially pressed when amount；
(4) external hurricane globe is added, ambient wind velocity is avoided to influence the thermal balance on surface to be measured；
(5) heat collecting sheet effectively reduces the influence to former thermal field along being laid by master plate isothermal level, while tight by elastic
It is pressed on the case where measured surface also reduces temperature-sensitive point at a distance from practical temperature measuring point, effectively improves non-ideal contact.
Further, the probe 1 further includes heat collecting sheet 15, and the shape of the heat collecting sheet 15 is band-like, the heat collecting sheet
15 longitudinal cross-section is arc, and the both ends of the heat collecting sheet 15 of arc are connected with the end face of temperature compensation block 111, the thermal-arrest
Axial direction of the piece 15 along temperature compensation block 111 and prominent, the survey of the measurement thermocouple 13 towards the direction far from temperature compensation block 111
Amount end is located at heat collecting sheet 15 close to the center of the one side of probe 1 and forms temperature-sensitive point 151.
Seen from the above description, highly heat-conductive material can be used in the heat collecting sheet 15, increases the thermoelectricity to measurement thermocouple 13
The heat collecting sheet 15 of the heat supply of thermo wires, arc has elasticity, after contacting and being pressurized with surface 6 to be measured, heat collecting sheet
15 can deformation occurs at flat band-like and be tiled in surface 6 to be measured, so that more accurate temperature is obtained, simultaneously as collection
The both ends of backing 15 are connected with temperature compensation block 111, therefore thermal-arrest 15 there will not be the presence of export hot-fluid.
It further, further include supporting leg 3, the supporting leg 3 is " L " type, one end of the supporting leg 3 and the side wall phase of feeler lever 12
Even, the other end of the supporting leg 3 is axially facing temperature compensation block 111 along feeler lever 12, and the end of the other end of the supporting leg 3 is
Tip.
Seen from the above description, in actual measurement, the feeler lever of surface temperature measurement instrument is the mode downward of temperature compensation block 111
Grip, feeler lever is disposed vertically, on standing upright on surface 6 to be measured under the cooperation of pouring weight 4 and supporting leg 13.When measurement, heat collecting sheet 15
After deformation occurs under the action of from pouring weight 4 after contacting with surface 6 to be measured, the end of the other end of supporting leg 3 connects with surface 6 to be measured
Touching, due to end be tip, minimize with the contact on surface 6 to be measured, avoid the destruction to 6 thermal field of surface to be measured.
Further, further include from pouring weight 4, it is described that supporting leg 3 and feeler lever 12 are sheathed on feeler lever 12 and be located at from pouring weight 4
Between the other end.
Seen from the above description, after 3 end of supporting leg is contacted with surface 6 to be measured, apply pressure by certainly towards 6 direction of surface to be measured
The weight of pouring weight 4 determines, it is this can be designed with self-pressurized type avoid to greatest extent the introducing of manual operation hand-held probe 1 with
The influence of chance error difference.The angle that heat collecting sheet 15, thermocouple when this influence mainly presses as temperature-sensing element are contacted with surface
Degree and pressure cannot keep it is constant cause, and by setting supporting leg 3 and from pouring weight 4, so that it may guarantee the surface temperature measurement in measurement
Angle between instrument and surface to be measured 6 is any primary all consistent.
It further, further include hurricane globe 5, the hurricane globe 5 is sheathed on feeler lever 12 and is located at from pouring weight 4 and supporting leg 3
Between, for the opening of the hurricane globe 5 towards 111 direction of temperature compensation block, the supporting leg 3 and heat collecting sheet 15 are located at hurricane globe
In 5.
Seen from the above description, hurricane globe 5 effectively prevents the quick flowing of air to temperature-sensitive point 151 and measured surface 6
The influence of heat dissipation reduces the uncertain factor of surface-interrogating process.Simultaneously measurement when, due to hurricane globe 5 formed it is closed
Space, in high temperature surface measurement, the air themperature in hurricane globe 5 understands rapid increase, this is to the export hot-fluid for slowing down probe 11
And have certain benefit, the effect of thermal compensation is played to a certain extent.
Further, the number of the supporting leg 3 is at least three.
Seen from the above description, the condition that at least three supporting leg 3 can make surface temperature measurement instrument help in no external force
Under can also be stable be placed on surface 6 to be measured, to reduce extraneous influence.
Further, the conducting wire between the measurement thermocouple 13 and temperature-control heat couple 14 and temperature controller 3 is set respectively
In in feeler lever 12.
Seen from the above description, conducting wire is located in feeler lever 12, can play a protective role to conducting wire.
Further, the probe 1 further includes elastic 16 and limited post 17；
One end of the elastic 16 is connected with the end face of temperature compensation block 111, and the other end of the elastic 16 is towards remote
Direction from temperature compensation block 111 and along the axially extending of temperature compensation block 111, the other end of the elastic 16, which supports, is set to collection
Backing 15 is in the one side of temperature compensation block 111；
The length of the limited post 17 is less than the length of elastic 16, one end of the limited post 17 and temperature compensation block
111 end face is connected, and the limited post 17 is between elastic 16 and the edge of temperature compensation block 111, the limited post 17
It is arranged in parallel with elastic 16, the other end of the limited post 17, which supports, is set to heat collecting sheet 15 close to the one side of temperature compensation block 111
On；
The number of the elastic 16 is at least two, and the number of the limited post 17 is at least two, the elastic
16 are symmetrical arranged, and the limited post 17 is symmetrical arranged.
Seen from the above description, due to being provided with elastic 16 between heat collecting sheet 15 and the end face of temperature compensation block 111,
Pressure can be uniformly dispersed on heat collecting sheet 15, so that heat collecting sheet 15 is almost laid on surface 6 to be measured along thermoisopleth, thermal-arrest
Piece 15 is pressed on measured surface, is reduced temperature-sensitive point 151 at a distance from practical temperature measuring point, is effectively improved non-ideal contact
Situation.And the presence of limited post 17 guarantees that heat collecting sheet 15 is unlikely to that non-reversible deformation occurs and damages in extruding.
Please refer to Fig. 1-3, the embodiments of the present invention one are as follows:
A kind of surface temperature measurement instrument, including probe 1, temperature measuring set 2, supporting leg 3, from pouring weight 4 and hurricane globe 5, the probe 1
Including temperature compensation means 11, feeler lever 12, measurement thermocouple 13, temperature-control heat couple 14, elastic 16 and limited post 17, the survey
Calorimetric galvanic couple and temperature-control heat couple are all made of common " K " type thermocouple.
The temperature compensation means 11 includes temperature controller 112 and temperature compensation block 111, the material of temperature compensation block 111
Material is metal, and the temperature compensation block 111 is set on the end face of one end of feeler lever 12, the measurement end position of the measurement thermocouple 13
In the outside of temperature compensation block 111, the thermocouple wire of the measurement thermocouple 13 passes through temperature compensation block 111, the temperature control heat
The measurement end of galvanic couple 14 is set to the inside of temperature compensation block 111, and the reference end of the temperature-control heat couple 14 is set to temperature compensation block
111 outside；
The cathode heat of the reference end of the cathode thermocouple wire and temperature-control heat couple 14 of the reference end of the measurement thermocouple 13
The positive thermocouple wire of thermocouple wire electrical connection, the reference end of the measurement thermocouple 13 is connected with the cathode of temperature controller 112,
The positive thermocouple wire of the reference end of the temperature-control heat couple 14 is connected with the anode of temperature controller 112, the temperature control
The output end of device 112 is connected with temperature compensation block 111, the measurement thermocouple 13 and temperature-control heat couple 14 and temperature controller
Conducting wire between 112 is respectively arranged in feeler lever 12；
One end of the temperature measuring instrument 2 is connected to the positive thermocouple wire of the reference end of measurement thermocouple 13, described
The other end of temperature measuring instrument 2 is connected to the cathode thermocouple wire of the reference end of measurement thermocouple 13.
The shape of the heat collecting sheet 15 be it is band-like, the longitudinal cross-section of the heat collecting sheet 15 is arc, the thermal-arrest of arc
The both ends of piece 15 are connected with the end face of temperature compensation block 111, the heat collecting sheet 15 along temperature compensation block 111 axial direction and towards separate
The direction of temperature compensation block 111 is prominent, and the measurement end of the measurement thermocouple 13 is located at the one side of the close probe 1 of heat collecting sheet 15
Center simultaneously forms temperature-sensitive point 151.
One end of the elastic 16 is connected with the end face of temperature compensation block 111, and the other end of the elastic 16 is towards remote
Direction from temperature compensation block 111 and along the axially extending of temperature compensation block 111, the other end of the elastic 16, which supports, is set to collection
Backing 15 is in the one side of temperature compensation block 111；
The length of the limited post 17 is less than the length of elastic 16, one end of the limited post 17 and temperature compensation block
111 end face is connected, and the limited post 17 is between elastic 16 and the edge of temperature compensation block 111, the limited post 17
It is arranged in parallel with elastic 16, the other end of the limited post 17, which supports, is set to heat collecting sheet 15 close to the one side of temperature compensation block 111
On；
The number of the elastic 16 is at least two, and the number of the limited post 17 is at least two, the elastic
16 are symmetrical arranged, and the limited post 17 is symmetrical arranged, due to the presence of limited post 17, in the two sides of the heat collecting sheet 15 of arc
A lug boss is respectively produced towards the outside of heat collecting sheet 15, limited post 17 can guarantee that the deformation that heat collecting sheet 15 occurs is allowing model
In enclosing；
The supporting leg 3 is " L " type, and the number of the supporting leg 3 is four, one end of the supporting leg 3 and the side wall of feeler lever 12
It is connected, the other end of the supporting leg 3 is axially facing temperature compensation block 111, the end of the other end of the supporting leg 3 along feeler lever 12
For tip, the supporting leg 3 is arrived along the axial distance to 111 end face of temperature compensation block of temperature compensation block 111 no more than temperature-sensitive point 151
The distance of temperature compensation block 111.
It is described to be sheathed on feeler lever 12 and between supporting leg 3 and the other end of feeler lever 12 from pouring weight 4, from the material of pouring weight 4
Expect that copper or other metal materials can be used, the hurricane globe 5 is sheathed on feeler lever 12 and is located at the institute between pouring weight 4 and supporting leg 3
The opening of hurricane globe 5 is stated towards 111 direction of temperature compensation block, the supporting leg 3 and heat collecting sheet 15 are located in hurricane globe 5.
When in use, surface 6 to be measured is placed upward first, by the hand-held feeler lever 12 directed downwardly of temperature compensation block 111.Then
Feeler lever 12 is moved downward, and heat collecting sheet 15 is contacted with surface 6 to be measured, unclamps feeler lever 12, heat collecting sheet under the action of from pouring weight 4 at this time
15 are crushed under gravity, due to be from the quality of pouring weight 4 it is preset, adjusting dead weight block 4 can be passed through
Weight control heat collecting sheet 15 flat degree, and pre-set the length of supporting leg 3, guarantee heat collecting sheet 15 in predetermined flatness
When supporting leg 3 play a supporting role.Again due to being provided with elastic 16 between heat collecting sheet 15 and the end face of temperature compensation block 111,
Pressure can be uniformly dispersed on heat collecting sheet 15, so that heat collecting sheet 15 is almost laid on surface 6 to be measured along thermoisopleth, limit
The presence of column 17 guarantees that heat collecting sheet 15 is unlikely to damage again.
In surface temperature measurement instrument, the thermocouple wire of the thermocouple wire and temperature-control heat couple 14 that measure thermocouple 13 can be arranged
It is embedded in temperature compensation block 111 again in ceramic tube, and the measurement thermocouple 13 being located at outside temperature compensation block 111 can leave no room for manoeuvre
It is laid with after edge processing (being such as arranged insulating layer) along the surface that the surface of heat collecting sheet 15 is attached to heat collecting sheet 15 as far as possible.
In conclusion the utility model provides the surface temperature measurement instrument that a kind of error is small and measurement accuracy is high.The surface
Temperature measurer will (it is small and thermal response is fast to compare surface thermal resistor sensor thermal capacity for sensor of the thermocouple as surface temperature measurement instrument
Degree is fast, reaches that the thermally equilibrated time is short with surface to be measured, and the temperature measured is more acurrate；Temperature compensation means is devised, is reduced
The heat dissipation of thermocouple is measured, so that measurement thermocouple reduces close to the temperature on surface to be measured so that hot-fluid disappears or reduces as far as possible
The influence of master plate surface original thermal field is treated, to obtain more accurate temperature；Equipped with from pouring weight at feeler lever, guarantee sensor
It is contacted with constant angle and pressure with surface to be measured, reduces the error for artificially pressing generation when measurement；External hurricane globe is added,
Ambient wind velocity is avoided to influence the thermal balance on surface to be measured；Heat collecting sheet is effectively reduced along being laid by master plate isothermal level to former thermal field
Influence, while measured surface is tightly pressed against by elastic and also reduces temperature-sensitive point at a distance from practical temperature measuring point, effectively changed
The case where being apt to non-ideal contact.
The above description is only the embodiments of the present invention, and therefore it does not limit the scope of the patent of the utility model, all
Equivalents made based on the specification and figures of the utility model are applied directly or indirectly in relevant technology neck
Domain is also included in the patent protection scope of the utility model.
Claims (8)
1. a kind of surface temperature measurement instrument, including probe and temperature measuring instrument, which is characterized in that the probe includes that temperature-compensating fills
It sets, feeler lever, measure thermocouple and temperature-control heat couple；
The temperature compensation means includes temperature controller and temperature compensation block, and the temperature compensation block is set to one end of feeler lever
On end face, the measurement end of the measurement thermocouple is located at the outside of temperature compensation block, and the thermocouple wire of the measurement thermocouple is worn
Excess temperature compensation block, the measurement end of the temperature-control heat couple are set to the inside of temperature compensation block, the reference of the temperature-control heat couple
End is set to the outside of temperature compensation block；
The cathode thermocouple wire electricity of the reference end of the cathode thermocouple wire and temperature-control heat couple of the reference end of the measurement thermocouple
The positive thermocouple wire of connection, the reference end of the measurement thermocouple is connected with the cathode of temperature controller, the temperature control thermoelectricity
The positive thermocouple wire of even reference end is connected with the anode of temperature controller, and the output end and temperature of the temperature controller are mended
Block is repaid to be connected；
One end of the temperature measuring instrument is connected to the positive thermocouple wire of the reference end of measurement thermocouple, the temperature measurement
The other end of instrument is connected to the cathode thermocouple wire of the reference end of measurement thermocouple.
2. surface temperature measurement instrument according to claim 1, which is characterized in that the probe further includes heat collecting sheet, the thermal-arrest
The shape of piece be it is band-like, the longitudinal cross-section of the heat collecting sheet is arc, the both ends of the heat collecting sheet of arc and temperature compensation block
End face be connected, axial direction of the heat collecting sheet along temperature compensation block and prominent, the measurement towards the direction far from temperature compensation block
The measurement end of thermocouple is located at heat collecting sheet close to the center of the one side of probe and forms temperature-sensitive point.
3. surface temperature measurement instrument according to claim 2, which is characterized in that further include supporting leg, the supporting leg is " L " type, institute
The one end for stating supporting leg is connected with the side wall of feeler lever, the other end of the supporting leg along feeler lever the temperature compensation block that is axially facing, it is described
The end of the other end of supporting leg is tip.
4. surface temperature measurement instrument according to claim 3, which is characterized in that further include from pouring weight, it is described to be sheathed on from pouring weight
On feeler lever and between supporting leg and the other end of feeler lever.
5. surface temperature measurement instrument according to claim 4, which is characterized in that further include hurricane globe, the hurricane globe is sheathed on
On feeler lever and it is located at between pouring weight and supporting leg, the opening of the hurricane globe is towards temperature-compensating Block direction, the supporting leg sum aggregate
Backing is located in hurricane globe.
6. surface temperature measurement instrument according to claim 5, which is characterized in that the number of the supporting leg is at least three.
7. surface temperature measurement instrument according to claim 6, which is characterized in that the measurement thermocouple and temperature-control heat couple and temperature
Conducting wire between degree controller is respectively arranged in feeler lever.
8. surface temperature measurement instrument according to claim 2, which is characterized in that the probe further includes elastic and limited post；
One end of the elastic is connected with the end face of temperature compensation block, and the other end of the elastic is towards far from temperature compensation block
Direction and along the axially extending of temperature compensation block, the other end of the elastic, which supports, is set to heat collecting sheet close to temperature compensation block
On on one side；
The length of the limited post is less than the length of elastic, and one end of the limited post is connected with the end face of temperature compensation block,
Between elastic and the edge of temperature compensation block, the limited post is arranged in parallel the limited post with elastic, the limit
The other end of position column, which supports, is set to heat collecting sheet in the one side of temperature compensation block；
The number of the elastic is at least two, and the number of the limited post is at least two, and the elastic is symmetrical arranged,
The limited post is symmetrical arranged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821086144.3U CN208505485U (en) | 2018-07-10 | 2018-07-10 | A kind of surface temperature measurement instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821086144.3U CN208505485U (en) | 2018-07-10 | 2018-07-10 | A kind of surface temperature measurement instrument |
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| Publication Number | Publication Date |
|---|---|
| CN208505485U true CN208505485U (en) | 2019-02-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821086144.3U Withdrawn - After Issue CN208505485U (en) | 2018-07-10 | 2018-07-10 | A kind of surface temperature measurement instrument |
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| CN (1) | CN208505485U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108469308A (en) * | 2018-07-10 | 2018-08-31 | 厦门市计量检定测试院 | A kind of surface temperature measurement instrument |
-
2018
- 2018-07-10 CN CN201821086144.3U patent/CN208505485U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108469308A (en) * | 2018-07-10 | 2018-08-31 | 厦门市计量检定测试院 | A kind of surface temperature measurement instrument |
| CN108469308B (en) * | 2018-07-10 | 2023-12-12 | 厦门市计量检定测试院 | Surface thermometer |
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