CN107131960A - A kind of low temperature measurement device and method - Google Patents
A kind of low temperature measurement device and method Download PDFInfo
- Publication number
- CN107131960A CN107131960A CN201710434838.5A CN201710434838A CN107131960A CN 107131960 A CN107131960 A CN 107131960A CN 201710434838 A CN201710434838 A CN 201710434838A CN 107131960 A CN107131960 A CN 107131960A
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- China
- Prior art keywords
- moving plate
- thermometer
- measured
- contact
- quiet disk
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K1/00—Details of thermometers not specially adapted for particular types of thermometer
- G01K1/14—Supports; Fastening devices; Arrangements for mounting thermometers in particular locations
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Measuring Temperature Or Quantity Of Heat (AREA)
Abstract
The present invention relates to a kind of low temperature measurement device and method, multiple conductive stationary contacts (2b) are disposed with quiet disk (2a) circumference, four conductive movable contacts (1c) are disposed with Moving plate (1b) circumference, four thermometer lead-out wires (3a) of each road thermometer (3) are along quiet disk (2a) circumference, and electrically connected with stationary contact (2b), four measurement lines (4) are drawn on four movable contacts (1c) on Moving plate (1b), during measurement temperature, rotation Moving plate axle (1a) causes four movable contacts (1c) arranged on Moving plate (1b) to be contacted with four stationary contacts (2b) that some thermometer (3) on quiet disk (2a) is connected, the conductive path of thermometer (3) so to be measured realizes whole conducting, so as to carry out temperature survey by four measurement lines (4), when needing to change thermometer to be measured (3), rotate Moving plate axle (1a), so that the stationary contact (2b) that the movable contact (1c) is connected with thermometer to be measured (3) realizes electrical contact.
Description
Technical field
The present invention relates to a kind of low temperature measurement device and method, more particularly to a kind of multichannel temperature measurement method.
Background technology
In low-temperature physic experiment, low temperature environment, the particularly low temperature environment of liquid helium region (near 4.2K) are maintained extremely
It is difficult, it is necessary to take a variety of insulations to reduce heat transfer of the environment to low-temperature components to greatest extent, especially in the accurate measurement of needs
In the case of, control external environment all seems most important to the small heat transfer of low temperature test object.
Temperature is the most basic physical quantity for needing in low temperature test to measure, and thermometer is in itself generally using " four draw
Collimation method " realizes high-precision measurement, wherein two leads are used for galvanization, two leads are used to survey voltage, i.e. temperature in addition
Meter needs four measurement lines to be connected directly to indoor temperature end to complete the measurement of temperature from low-temperature end one in itself.To ensure the essence of temperature survey
Degree, when thermometer is used require thermometer have in itself with object under test it is good thermally contact, such external environment passes through described four
The heat of root measurement line transmission is absorbed by thermometer and object under test, and then influences the precision of temperature survey and the reality of object under test
Border temperature.
In low temperature test, in order to ensure the accuracy and integrality of experimentation data, it usually needs in experimental subjects
The multiple temperature measuring points of upper arrangement, which adds the quantity of thermometer measure line, during need to considering multichannel temperature measurement
Heat transfer problem.In existing multichannel temperature measurement technology, each road thermometer is separate, and each thermometer passes through four surveys
Measure line and carry out temperature survey, when the quantity of thermometer is few, the heat transmitted by thermometer measure line influences not on experiment
Greatly, the influence now caused by thermometer can be neglected；When the quantity increase of thermometer so that passed by thermometer measure line
The total amount of heat passed is excessive and triggers the hot-fluid fluctuation of experimental subjects and thermometer in itself, thus inevitably results in temperature survey
Measure the experimental error of error and correlation.
The e measurement technology for not yet having correlation at present is reported to solve this problem.
The content of the invention
The purpose of the present invention is：Overcome the disadvantages mentioned above of existing multichannel temperature measurement technology, propose that a kind of cryogenic temperature is surveyed
Device and method is measured, the problem of multi way temperature meter heat output is excessive in low temperature test is solved.
The technical scheme is that.
A kind of low temperature measurement device of the present invention includes：Quiet disk, Moving plate and thermometer.Quiet disk and Moving plate are by electric insulation material
Material makes, and coaxially arranged.Multiple (at least four multiples) conductive stationary contact, Moving plate circumference are disposed with quiet disk circumference
On be disposed with four conductive movable contacts, be fixed with Moving plate axle in Moving plate upper surface center, cause when dynamic Shaft rotation
Moving plate synchronous rotary, while so that the movable contact is contacted with stationary contact.
Four lead-out wires of each road thermometer are electrically connected along quiet disk circumference, and with stationary contact realization, then in Moving plate
On four movable contacts on draw four measurement lines, during measurement temperature, rotation Moving plate axle to arrange on Moving plate four are dynamic to be touched
Four stationary contacts that point is connected with Jing Panshangmou roads thermometer are contacted, and the conductive path of thermometer so to be measured realizes that whole process is led
It is logical, so as to carry out temperature survey by four measurement lines, when needing to change thermometer to be measured, Moving plate axle only need to be rotated,
So that the stationary contact that the movable contact is connected with thermometer to be measured realizes electrical contact.
The present invention only needs four measurement lines to connect different thermometers, realizes the measurement of multi way temperature, simultaneously for
For multichannel temperature measurement, heat transfer matchmaker of the equal only one of which thermometer as external environment with low temperature test object is measured every time
It is situated between；The quantity of design temperature meter is N in theory, then heat output corresponding compared to existing multichannel temperature measurement technology, the present invention
The corresponding heat output of the multichannel temperature measurement technology is only its 1/N times, it is thus possible to greatly reduce external environment real with low temperature
The heat transfer of object is tested, so as to improve measurement accuracy.
Brief description of the drawings
Fig. 1 Moving plate structural representations of the present invention；
The quiet dish structure schematic diagram of Fig. 2 present invention；
Fig. 3 thermometer structural representations of the present invention；
Fig. 4 overall structure diagrams of the present invention.
Embodiment
The present invention is further illustrated below in conjunction with the drawings and specific embodiments.
As shown in figure 1, in the present invention, Moving plate 1b is made by electrically insulating material, Moving plate 1b upper surfaces center is fixed with dynamic
Four conductive movable contact 1c have been evenly arranged on dish axle 1a, Moving plate 1b circumference.Movable contact 1c is aciculiform in present embodiment,
Length be more than Moving plate 1b thickness, movable contact 1c run through Moving plate 1b, and Moving plate 1b upper and lower surface respectively expose about 1cm conduction touch
Head, the conductive contact that upper end is exposed is used to connect measurement line 4, and the conductive contact that lower end is exposed is used to overlap the stationary contact on quiet disk 2a
Point 2b.Electrically insulating material used in Moving plate 1b can be plank, epoxy plate etc..
As shown in Fig. 2 quiet disk 2a is made by electrically insulating material, multiple (design temperatures have been evenly arranged on quiet disk 2a circumference
The number of meter 3 is N, and due to each thermometer 3 four stationary contact 2b of correspondence, then stationary contact 2b number is 4N, and N is positive integer,
Most preferred N values meet the interval 3-5mm between adjacent stationary contact 2b；Conductive stationary contact 2b, quiet disk 2a are used to be electrically insulated
Material can be plank, epoxy plate etc..
As shown in figure 3, one end of thermometer 3 is connected with four thermometer lead-out wire 3a, surveyed for " four leads methods "
Electric connection terminal needed for amount, the thermometer lead-out wire 3a other end is realized with the stationary contact 2b successively to be electrically connected.
As shown in figure 4, measuring method of the present invention is as follows：The corresponding thermometer lead-out wire 3a of each road thermometer 3 is along quiet disk 2a
Circumference, and electrically connected with stationary contact 2b realizations, four measurement lines are then drawn on four on Moving plate 1b movable contact 1c
4, quiet disk 2a and Moving plate 1b are coaxially positioned into completion installation process.
During measurement temperature, rotation Moving plate axle 1a causes four movable contact 1c being arranged on Moving plate 1b and quiet disk 2a, and upper some is warm
Four stationary contact 2b contacts that degree meter 3 is connected, the conductive path of thermometer 3 so to be measured realizes whole conducting, so as to
Temperature survey is carried out by four measurement lines 4, when needing to change thermometer 3 to be measured, only Moving plate axle 1a need to be rotated so that described
The stationary contact 2b that movable contact 1c is connected with thermometer 3 to be measured realizes electrical contact.
Above example is provided just for the sake of the description purpose of the present invention, and is not intended to limit the scope of the present invention.This
The scope of invention is defined by the following claims.The various equivalent substitutions that do not depart from spirit and principles of the present invention and make and repair
Change, all should cover within the scope of the present invention.
Claims (5)
1. a kind of low temperature measurement device, it is characterised in that including：Quiet disk, Moving plate and thermometer；It is disposed with quiet disk circumference
Four conductive movable contacts are disposed with multiple conductive stationary contacts, Moving plate circumference, are fixed in Moving plate upper surface center
There is Moving plate axle, cause Moving plate synchronous rotary when dynamic Shaft rotation, while so that the movable contact is contacted with stationary contact；Each road temperature
Four lead-out wires of meter are spent along quiet disk circumference, and are electrically connected with stationary contact realization；Draw on four movable contacts on Moving plate
Go out four measurement lines, during measurement temperature, rotation Moving plate axle causes four movable contacts arranged on Moving plate and some is to be measured on quiet disk
Four stationary contacts contact that thermometer is connected, the conductive path of thermometer to be measured realizes whole conducting, so as to pass through four surveys
Measure line and carry out temperature survey, when needing to change thermometer to be measured, only need to rotate Moving plate axle so that the movable contact is with treating thermometric
The connected stationary contact of degree meter realizes electrical contact.
2. low temperature measurement device according to claim 1, it is characterised in that：The multiple conductive stationary contact is extremely
Few four multiple.
3. low temperature measurement device according to claim 1, it is characterised in that：The quiet disk and Moving plate are coaxially arranged.
4. low temperature measurement device according to claim 1, it is characterised in that：The quiet disk and Moving plate are by electric insulation material
Material makes.
5. a kind of low temperature measurement method, it is characterised in that step is：During measurement temperature, rotation Moving plate axle causes cloth on Moving plate
Four stationary contacts that four movable contacts put are connected with some thermometer to be measured on quiet disk are contacted, and thermometer so to be measured is led
Electric pathway realizes whole conducting, so as to carry out temperature survey by four measurement lines, when needing to change thermometer to be measured,
Rotate Moving plate axle so that the stationary contact that the movable contact is connected with thermometer to be measured realizes electrical contact.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710434838.5A CN107131960B (en) | 2017-06-10 | 2017-06-10 | low-temperature measuring device and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710434838.5A CN107131960B (en) | 2017-06-10 | 2017-06-10 | low-temperature measuring device and method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107131960A true CN107131960A (en) | 2017-09-05 |
| CN107131960B CN107131960B (en) | 2019-12-06 |
Family
ID=59735012
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710434838.5A Active CN107131960B (en) | 2017-06-10 | 2017-06-10 | low-temperature measuring device and method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107131960B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117232669A (en) * | 2023-10-24 | 2023-12-15 | 常州宏川石化仓储有限公司 | Temperature sensor assembly, incineration system and waste gas treatment method |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2035137U (en) * | 1988-03-28 | 1989-03-29 | 毕震华 | Rotory switch for pendant lamp |
| US5988877A (en) * | 1997-09-15 | 1999-11-23 | C E M Corporation | Method and apparatus for temperature calibration in microwave assisted chemistry |
-
2017
- 2017-06-10 CN CN201710434838.5A patent/CN107131960B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2035137U (en) * | 1988-03-28 | 1989-03-29 | 毕震华 | Rotory switch for pendant lamp |
| US5988877A (en) * | 1997-09-15 | 1999-11-23 | C E M Corporation | Method and apparatus for temperature calibration in microwave assisted chemistry |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117232669A (en) * | 2023-10-24 | 2023-12-15 | 常州宏川石化仓储有限公司 | Temperature sensor assembly, incineration system and waste gas treatment method |
| CN117232669B (en) * | 2023-10-24 | 2024-01-30 | 常州宏川石化仓储有限公司 | Temperature sensor assembly, incineration system and waste gas treatment method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107131960B (en) | 2019-12-06 |
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