CN107421660B - A kind of small temp difference measurer - Google Patents
A kind of small temp difference measurer Download PDFInfo
- Publication number
- CN107421660B CN107421660B CN201710063811.XA CN201710063811A CN107421660B CN 107421660 B CN107421660 B CN 107421660B CN 201710063811 A CN201710063811 A CN 201710063811A CN 107421660 B CN107421660 B CN 107421660B
- Authority
- CN
- China
- Prior art keywords
- thermal insulation
- temperature
- heat sensor
- duct
- fastening bolt
- 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.)
- Expired - Fee Related
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Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K17/00—Measuring quantity of heat
- G01K17/06—Measuring quantity of heat conveyed by flowing media, e.g. in heating systems e.g. the quantity of heat in a transporting medium, delivered to or consumed in an expenditure device
- G01K17/08—Measuring quantity of heat conveyed by flowing media, e.g. in heating systems e.g. the quantity of heat in a transporting medium, delivered to or consumed in an expenditure device based upon measurement of temperature difference or of a temperature
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K7/00—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements
- G01K7/16—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements using resistive elements
- G01K7/22—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements using resistive elements the element being a non-linear resistance, e.g. thermistor
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N25/00—Investigating or analyzing materials by the use of thermal means
- G01N25/20—Investigating or analyzing materials by the use of thermal means by investigating the development of heat, i.e. calorimetry, e.g. by measuring specific heat, by measuring thermal conductivity
Abstract
Column is used the invention patent relates to a kind of, the small temp difference measurer of pearl and spherical heat sensor, by heat sensor, thermal insulation plug, temperature-sensitive cavity, thermal insulation sealing bolt, seal washer, clamping cap, supporter, flow into duct and outflow duct composition, heat sensor is placed in temperature-sensitive cavity, the connection of temperature-sensitive cavity flows into duct and outflow duct, the thermal stability of overall structure and arrangement is good, it can be convenient combination, structure is simple, compactedness is good, high degree of automation, realize reference measurement, eliminate non-specific heat interference, high sensitivity, there is advantage applied to field assay and test, it can apply in various thermometric analysis, the fields such as calorimetric biosensor.
Description
Technical field
The present invention relates to a kind of small temp difference measurers, in particular by the small temperature of column, pearl and spherical heat sensor
Difference measuring device can be applied in fields such as various thermometric analysis, calorimetric biosensors.
Background technique
Thermometric analysis method is analyzed by testing the thermal change of biochemical reaction process, is suitable for most of
Biochemical reaction is not influenced by sample properties such as color, muddiness and electrochemistry, and the testing principle of calorimetric method it is simple, can
It leans on, is increasingly becoming the important directions that exploitation is quickly detected in the fields such as food safety, environment, medicine.It is quick by the biology such as desmoenzyme
The calorimetric biosensor of sensing unit can greatly improve the specificity of calorimetry, and speed is surveyed and on-line analysis field at the scene
With advantage, it is particularly suitable for detecting untreated actual sample.
The useful signal of thermometric analysis method is thermal change, and the different complicated thermal signals of real process coexist, and it is filled
Set have the characteristics that various structure types and.Current heat sensor (temperature sensor, heat flow transducer etc.) is mainly temperature-sensitive electricity
Resistance and thermoelectric pile, there is plate, sheet, column, pearl and the forms such as spherical, and individual heat sensor is not able to satisfy different calorimetrics point
The measurement request of analysis apparatus and complicated thermal signal requires the own characteristic for adapting to apparatus for thermal analysis, heat sensor, guarantees heat
Stability is good and heat transfer is well arranged, and high sensitivity, realizes reference measurement etc..Small temp difference measurer adapts to above-mentioned want
It asks, by the variation of heat sensor timely perception studies object temperature and heat, structure arrangement is able to satisfy different thermometric analysis and wants
Summation heat sensor design feature (contact need plane or immerse arrangement form etc.) can guarantee strong heat exchange, thermostabilization and sensitive
Degree is high, and compact-sized, adaptable.
Summary of the invention
Present invention aim to address in existing thermometric analysis and calorimetric biosensor thermal parameter measurement technology lack
It falls into, a kind of small temp difference measurer using column, pearl and spherical heat sensor is provided.
The technical solution adopted by the present invention to solve the technical problems is that small temp difference measurer is exhausted by heat sensor, heat
Edge plug, thermal insulation sealing bolt, seal washer, clamping cap, supporter, flows into duct and outflow duct composition at temperature-sensitive cavity,
The heat sensor is the heat sensor of column, pearl and balled form, preferably thermistor, and the thermal insulation plug is round
Cylindricality, center opening are the inflow duct, and an end face is disposed with the protrusion of semicolumn hemicone, and the other end is provided with threaded hole,
Threaded hole bottom is provided with the temperature-sensitive cavity that bore is less than screw thread bore dia, arranges heat sensor, institute in the temperature-sensitive cavity
Stating thermal insulation fastening bolt center opening is the outflow duct, the spiral shell of the thermal insulation fastening bolt and the thermal insulation plug
Pit cooperation, by compressing the closed temperature-sensitive cavity of seal washer, the clamping cap center is provided with through-hole, the mouth of through-hole
Diameter is greater than the thermal insulation fastening bolt outer diameter and is less than thermal insulation plug outer diameter, and the clamping cap is covered to be fastened in the thermal insulation
On bolt, the clamping cap is threadedly engaged with the supporter, can screw thread push the thermal insulation plug to the heat absolutely
The raised end face direction shift position of edge plug.
The thermal insulation plug and the thermal insulation fastening bolt are made of high chemically inert heat insulator, preferably
Polytetrafluoroethylene (PTFE) (hydrophilic modification).
Further, it is arranged in using twinned structure with two small temp difference measurers of the twin heat sensor with above-mentioned
Measurement and reference are used separately as on the supporter, the signal output of twin heat sensor is concatenated according to difference output mode, group
Cooperation is one group of Measurement channel and reference channel, is such as multiplied Measurement channel and reference channel, it can be achieved that multiple groups channel simultaneously
While measure.
The invention has the advantages that small temp difference measurer structure arrangement adapts to the knot of heat sensor and apparatus for thermal analysis
Structure feature, it is more convenient using highly sensitive heat sensor, improve the signal strength of small differential temperature survey, high sensitivity；It can be square
Just it combines, realizes reference measurement, what is obtained is difference component, eliminates non-specific heat interference, improves measurement accuracy；It can be convenient group
It closes, measurement while being able to achieve multiplexer channel；The thermal stability of overall structure and arrangement is good, can reduce environmental disturbances, subtract
Few error；Structure is simple, cheap, and compactedness is good, high degree of automation, and adaptability is good, is applied to field assay and test
With advantage.
Detailed description of the invention
Present invention will be further explained below with reference to the attached drawings and examples.
Fig. 1 is the structural schematic diagram of small temp difference measurer.
Fig. 2 is the structural schematic diagram of small temp difference measurer binding reactor.
Wherein: 1, heat sensor, 2, thermal insulation plug, 3, temperature-sensitive cavity, 4, thermal insulation sealing bolt, 5, seal washer,
6, clamping cap, 7, supporter, 8, inflow duct, 9, outflow duct.
Specific embodiment
Present invention combination nationality by below in conjunction with embodiment illustrate the content of the present invention, the model being not intended to limit the present invention
It encloses.
As shown in Figure 1, small temp difference measurer is sealed by heat sensor 1, thermal insulation plug 2, temperature-sensitive cavity 3, thermal insulation
Bolt 4, clamping cap 6, supporter 7, flows into duct 8 and outflow duct 9 composition at seal washer 5, and heat sensor 1 selects pearl heat
Quick resistance, cylindrical 2 center opening of thermal insulation plug are to flow into duct 8, and cylindrical 2 bottom end face of thermal insulation plug is disposed with half
Cylinder hemicone protrusion, upper surface are provided with threaded hole, and threaded hole bottom opening diameter has the cylindrical temperature-sensitive less than screw thread bore dia
Cavity 3, the volume of temperature-sensitive cavity 3 are 1.0 ml, and heat sensor 1 is arranged in inside temperature-sensitive cavity 3, and when measurement is immersed in reaction solution
In, the threaded hole of thermal insulation fastening bolt 4 and thermal insulation plug 2 cooperates, and seal washer 5 is compressed after screwing and realizes temperature-sensitive cavity 3
Closed, 4 center opening of thermal insulation fastening bolt is outflow duct 9, and 6 center of clamping cap is provided with through-hole, inner diameter size circle of through-hole
Between 2 outer diameter of 4 outer diameter of thermal insulation fastening bolt and thermal insulation plug, 6 sets of clamping cap in thermal insulation fastening bolt 4, are compressed
Lid 6 is threadedly engaged with supporter 7, can screw thread push thermal insulation plug 2 mobile to the bottom end face direction of thermal insulation plug 2
Position, vice versa.Thermal insulation plug 2 and thermal insulation fastening bolt 4 are made of polytetrafluoroethylene (PTFE) (hydrophilic modification).
It is arranged on supporter using two small temp difference measurers of twinned structure and twin heat sensor 1 and forms one group of survey
It pings and reference channel.As shown in Fig. 2, by the end socket of the protrusion insertion microresponse device outlet on thermal insulation plug 2, and
Clamping cap 6 is screwed, guarantees that runner is closed, wherein a reactor is reference reaction device, another reactor is test reactor, works as quilt
Sample is reacted in the test reactor of TCH test channel, and is not reacted in reference reaction device, so that the two is deposited
It is detected in the size of the temperature difference, difference variation by being placed on the small temp difference measurer of reactor outlet, small differential temperature survey
The signal output of the twin heat sensor of device is concatenated according to difference output mode, obtains test reactor and reference reaction device
Small temperature signal can reflect the amount of sample after processing.
Claims (3)
1. a kind of small temp difference measurer seals spiral shell by heat sensor (1), thermal insulation plug (2), temperature-sensitive cavity (3), thermal insulation
Bolt (4), clamping cap (6), supporter (7), flows into duct (8) and outflow duct (9) composition at seal washer (5), and feature exists
In, the heat sensor (1) is the heat sensor of column, pearl or balled form, and the thermal insulation plug (2) is cylinder,
Center opening is the inflow duct (8), and an end face is disposed with the protrusion of semicolumn hemicone, and the other end is provided with threaded hole, spiral shell
Pit bottom is provided with the temperature-sensitive cavity (3) that bore is less than screw thread bore dia, and the arrangement heat passes in the temperature-sensitive cavity (3)
Sensor (1), thermal insulation fastening bolt (4) center opening are the outflow duct (9), the thermal insulation fastening bolt (4)
Cooperate with the threaded hole of the thermal insulation plug (2), by compressing the closed temperature-sensitive cavity (3) of seal washer (5), institute
Clamping cap (6) center is stated to be provided with bore greater than thermal insulation fastening bolt (4) outer diameter and be less than thermal insulation plug (2) outer diameter
Through-hole, the clamping cap (6) cover on the thermal insulation fastening bolt (4), the clamping cap (6) and the supporter (7) spiral shell
Line cooperation, can screw thread push the mobile position in the raised end face direction of thermal insulation plug (2) the Xiang Suoshu thermal insulation plug (2)
It sets, further, is arranged in the support using two small temp difference measurers of twinned structure and the twin heat sensor (1)
Measurement and reference are used separately as on body (7), the signal output of the twin heat sensor (1) is concatenated according to difference output mode,
Combination is used as one group of Measurement channel and reference channel, realizes small differential temperature survey.
2. a kind of small temp difference measurer according to claim 1, it is characterised in that the heat sensor (1) is temperature-sensitive electricity
Resistance.
3. a kind of small temp difference measurer according to claim 1, it is characterised in that the thermal insulation plug (2) and described
Thermal insulation fastening bolt (4) is made of high chemically inert heat insulator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710063811.XA CN107421660B (en) | 2017-02-04 | 2017-02-04 | A kind of small temp difference measurer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710063811.XA CN107421660B (en) | 2017-02-04 | 2017-02-04 | A kind of small temp difference measurer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107421660A CN107421660A (en) | 2017-12-01 |
| CN107421660B true CN107421660B (en) | 2019-04-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710063811.XA Expired - Fee Related CN107421660B (en) | 2017-02-04 | 2017-02-04 | A kind of small temp difference measurer |
Country Status (1)
| Country | Link |
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| CN (1) | CN107421660B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109084913B (en) * | 2018-10-29 | 2020-04-28 | 中国空气动力研究与发展中心超高速空气动力研究所 | Step type plug type calorimeter |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1853903A1 (en) * | 2005-02-22 | 2007-11-14 | CNR Consiglio Nazionale Delle Ricerche | Low cost multimode calorimeter |
| CN201974397U (en) * | 2011-01-31 | 2011-09-14 | 谢斌 | Enzyme thermal bioreactor device |
| CN202547820U (en) * | 2012-03-02 | 2012-11-21 | 恒新基电子（青岛）有限公司 | Screw type temperature sensor |
| RU2535527C1 (en) * | 2013-08-23 | 2014-12-10 | Шлюмберже Текнолоджи Б.В. | Method of determining quantitative composition of multi-component medium (versions) |
| CN204115907U (en) * | 2014-10-22 | 2015-01-21 | 孝感华工高理电子有限公司 | Measure the thermistor probe of body surface temperature |
-
2017
- 2017-02-04 CN CN201710063811.XA patent/CN107421660B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1853903A1 (en) * | 2005-02-22 | 2007-11-14 | CNR Consiglio Nazionale Delle Ricerche | Low cost multimode calorimeter |
| CN201974397U (en) * | 2011-01-31 | 2011-09-14 | 谢斌 | Enzyme thermal bioreactor device |
| CN202547820U (en) * | 2012-03-02 | 2012-11-21 | 恒新基电子（青岛）有限公司 | Screw type temperature sensor |
| RU2535527C1 (en) * | 2013-08-23 | 2014-12-10 | Шлюмберже Текнолоджи Б.В. | Method of determining quantitative composition of multi-component medium (versions) |
| CN204115907U (en) * | 2014-10-22 | 2015-01-21 | 孝感华工高理电子有限公司 | Measure the thermistor probe of body surface temperature |
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| Publication number | Publication date |
|---|---|
| CN107421660A (en) | 2017-12-01 |
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Granted publication date: 20190423 Termination date: 20200204 |