CN110375869A - A kind of high stability high-temperature temperature sensor - Google Patents
A kind of high stability high-temperature temperature sensor Download PDFInfo
- Publication number
- CN110375869A CN110375869A CN201910652824.XA CN201910652824A CN110375869A CN 110375869 A CN110375869 A CN 110375869A CN 201910652824 A CN201910652824 A CN 201910652824A CN 110375869 A CN110375869 A CN 110375869A
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- CN
- China
- Prior art keywords
- thermal resistance
- thermocouple cable
- armoured thermocouple
- shield
- temperature sensor
- 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.)
- Pending
Links
- 238000003466 welding Methods 0.000 claims abstract description 17
- 239000003292 glue Substances 0.000 claims abstract description 11
- 230000001939 inductive effect Effects 0.000 claims abstract description 11
- 238000005452 bending Methods 0.000 claims description 21
- 239000000243 solution Substances 0.000 claims description 12
- 238000005538 encapsulation Methods 0.000 claims description 11
- 239000000843 powder Substances 0.000 claims description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 9
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 7
- 229910052814 silicon oxide Inorganic materials 0.000 claims description 7
- 238000010438 heat treatment Methods 0.000 claims description 5
- 239000000463 material Substances 0.000 claims description 4
- 238000010792 warming Methods 0.000 claims description 4
- 238000010276 construction Methods 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 claims description 3
- 238000002360 preparation method Methods 0.000 claims description 3
- 239000002994 raw material Substances 0.000 claims description 3
- 229910001220 stainless steel Inorganic materials 0.000 claims description 3
- 239000010935 stainless steel Substances 0.000 claims description 3
- 239000011259 mixed solution Substances 0.000 claims description 2
- 239000004831 Hot glue Substances 0.000 claims 1
- 238000007599 discharging Methods 0.000 claims 1
- NMFHJNAPXOMSRX-PUPDPRJKSA-N [(1r)-3-(3,4-dimethoxyphenyl)-1-[3-(2-morpholin-4-ylethoxy)phenyl]propyl] (2s)-1-[(2s)-2-(3,4,5-trimethoxyphenyl)butanoyl]piperidine-2-carboxylate Chemical compound C([C@@H](OC(=O)[C@@H]1CCCCN1C(=O)[C@@H](CC)C=1C=C(OC)C(OC)=C(OC)C=1)C=1C=C(OCCN2CCOCC2)C=CC=1)CC1=CC=C(OC)C(OC)=C1 NMFHJNAPXOMSRX-PUPDPRJKSA-N 0.000 description 7
- PNEYBMLMFCGWSK-UHFFFAOYSA-N Alumina Chemical compound [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 3
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 241000463219 Epitheca Species 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 230000005619 thermoelectricity Effects 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Classifications
-
- 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
- G01K1/08—Protective devices, e.g. casings
-
- 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
- G01K7/02—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements using thermoelectric elements, e.g. thermocouples
Abstract
The present invention discloses a kind of high stability high temperature sensor, including sequentially connected thermal resistance shield, armoured thermocouple cable, high temperature wire and connector；Inductive head center position inside the thermal resistance shield is equipped with thermal resistance, and the other end pin of thermal resistance is connected with armoured thermocouple cable one end pin, and the other end pin of armoured thermocouple cable successively draws high temperature wire and connector；Realize that inductive head encapsulates between armoured thermocouple cable and thermal resistance shield by welding；The periphery of the thermal resistance is filled with thermostable heat-conductive glue inside thermal resistance shield.The present invention is measured for automobile exhaust emission system temperature, at low cost, and leakproofness excellent stability is high.
Description
Technical field
The invention belongs to temperature sensor technologies, and in particular to a kind of high stability high-temperature temperature sensor.
Background technique
With the formal implementation in Europe five and state six, motor vehicle exhaust emission control is increased both at home and abroad, more and more enterprises
Industry is directed to after-treatment system, and especially exhaust emissions measurement temperature sensor has had more mature research.
Exhaust gas temperature sensor is broadly divided into thermal resistance type and thermojunction type both at home and abroad at present, and thermal resistance is divided into positive temperature again
Coefficient thermal resistance and negative temperature coefficient thermal resistance.Positive temperature coefficient temperature sensor is with the hatch frame of Sen Sata and stone Rui Ji
Based on closed configuration, hatch frame temperature sensor intensity is high, but at high cost, and hatch frame also leads to thermal resistance local environment
Badly, life of product is low；Silent temperature sensor is at low cost, but intensity is low, cannot guarantee that long-term reliability.
High temperature sensor entrucking working environment is complicated, and general failure mode is hot end short circuit or open circuit, long-term
It is insufficient in stability.
Summary of the invention
Goal of the invention: it is an object of the invention to solve the deficiencies in the prior art, it is high to provide a kind of high stability
Temperature sensors.
Technical solution: a kind of high stability high-temperature temperature sensor of the invention, including sequentially connected thermal resistance shield
Cover, armoured thermocouple cable, high temperature wire and connector；Inductive head center position installation inside the thermal resistance shield
Have thermal resistance, the other end pin of thermal resistance is connected with armoured thermocouple cable one end pin, armoured thermocouple cable it is another
End pin successively draws high temperature wire and connector；It is realized between armoured thermocouple cable and thermal resistance shield by welding
Inductive head encapsulation；
The periphery of the thermal resistance (2) is filled with thermostable heat-conductive glue, the thermostable heat-conductive inside thermal resistance shield
Its raw material of glue includes silicon oxide powder and water；And the mass percent of silicon oxide powder and water is (100:16)~(100:14)；
Its it is specific the preparation method comprises the following steps:
1) oxide powder and water of corrresponding quality percentage, are weighed, and is stirred for being uniformly mixed；
2), the mixed solution in step 1) is poured into inside thermal resistance shield, then room temperature 8h；
3) solution after standing in step 2), is warming up to 120 DEG C from room temperature, entire heating time is 20min；And it should
120 DEG C of solution constant temperature after heating place 1h；
4) solution that step 3) obtains, is warming up to 700 DEG C from 120 DEG C, it is entire to heat used time 3h；And by this 700 DEG C
Solution constant temperature places 1h；
5) the 700 DEG C of solution obtained in step 4), are cooled to 250 DEG C, entire temperature fall time used time 2.5h.
The high-temperature temperature sensor completed with this, armoured thermocouple cable wall thickness is in 0.5-0.6mm, after being sintered in this way
Just meeting color is uniform for armoured thermocouple cable appearance, bright.
And existing thermostable heat-conductive glue is made frequently with aluminium oxide, organic siliconresin and methanol, but its performance is bad.
In order to one-off drawing molding, save the cost reduces assembly process, while being also able to satisfy inductive head high temperature tolerance
With quick response speed, the thermal resistance shield by single-ended closed configuration (thermal resistance shield is made of SUS310S material,
And pass through mold variable diameter drawing and forming), forward tip is arcuation enclosed construction, and the rear part and armoured thermocouple cable outer wall
Between by welding encapsulation；The production material of thermal resistance shield is SUS310S stainless steel, and the tip internal diameter of thermal resistance shield is
2.3-2.5mm (for example, by using 2.5mm, thickness can protect inside chip, resistance and conducting wire, but will not because of blocked up and
Influence its performance), the wall thickness of thermal resistance shield is 0.25-0.28mm (such as can use 0.25mm).
To guarantee proper alignment and preferable weldability, subtle weld seam due to caused by mismate is avoided, can guarantee length
Greater than 6mm, (i.e. it is big to assemble length to thermal resistance shield described in the package reliability of time for it with armoured thermocouple cable length of fit
In 6 millimeters), first by thermal resistance shield riveting on armoured thermocouple cable epitheca, then the two is welded and completes encapsulation.
Further, the domed structure of lead tail end of the armoured thermocouple cable and thermal resistance welding, domes
Thermal resistance be can guarantee in shield center, in addition play the role of buffering transition, thermal resistance and armoured thermocouple can be reinforced
Vibration strength after cable welding, the maximum stress that straight pin configuration is born are 1.06 times of arch pin configuration.Wherein, arch knot
Structure integrally includes three bending parts, and the left part of right side bending part and armoured thermocouple cable distance is L1 in three bending parts,
And the radian of the bending part is R1；The top of intermediate bending part and the left part of armoured thermocouple cable distance are L2, and the folding
The radian of turn of bilge is R2；The left part of left side bending part and armoured thermocouple cable distance is L3, and the radian of the bending part is
R3.L1 is 0.5~1mm, and L2 is 2~3mm, and L3 is 3.5~5mm；R1 is 0.75~1.5mm, and R2 is 0.6~1.2mm, and R3 is
0.75~1.5mm.
It further, further include flange and hood；The flange welding is in the tail end periphery of armoured thermocouple cable, armour
It is also cased with nut on dress thermocouple cable, nut is moved and rotated between flange and connector, the hood and armouring thermoelectricity
Even cable welding, wraps conducting wire and cold end encapsulation is completed in necking.
The utility model has the advantages that compared with prior art, the invention has the following advantages that
1, inductive head can guarantee the long-time stability under entrucking adverse circumstances；
2, thermal resistance encapsulation is durable reliable by high-temp glue, riveting and laser welding triple protection；
3, shield structure is simple, at low cost；
3, thermostable heat-conductive glue good toughness of the present invention, intensity are high, and have better vibration strength, protection that can be more stable
Thermal resistance.
Detailed description of the invention
Fig. 1 is overall structure diagram of the invention；
Fig. 2 is inductive head partial structure diagram in the present invention；
Fig. 3 is arch armoured thermocouple cable pin configuration stress analysis figure in the present invention；
Fig. 4 is straight armoured thermocouple cable pin configuration stress analysis figure in embodiment；
Fig. 5 is the lead tail end partial schematic diagram of armoured thermocouple cable and thermal resistance welding in the present invention.
Specific embodiment
Technical solution of the present invention is described in detail below, but protection scope of the present invention is not limited to the implementation
Example.
As shown in Figure 1, a kind of high stability high-temperature temperature sensor of the invention, including sequentially connected thermal resistance shield
Cover 1, armoured thermocouple cable 4, high temperature wire 8 and connector 9；Inductive head center inside the thermal resistance shield 1
Place is equipped with thermal resistance 2, and the other end pin of thermal resistance 2 is connected with 4 one end pin of armoured thermocouple cable, armoured thermocouple electricity
The other end pin of cable 4 successively draws high temperature wire 8 and connector 9；Between armoured thermocouple cable 4 and thermal resistance shield 1
Realize that inductive head is encapsulated by welding；Thermostable heat-conductive glue is filled in the periphery of the 1 inside thermal resistance 2 of thermal resistance shield
3, described its raw material of thermostable heat-conductive glue 3 includes silicon oxide powder and water；And silicon oxide powder: water=100:15.
Wherein, thermal resistance shield 1 is single-ended closed configuration, and forward tip is arcuation enclosed construction, and the rear part and armour
It fills between 4 outer wall of thermocouple cable through welding encapsulation；The production material of thermal resistance shield 1 is SUS310S stainless steel, thermoelectricity
Hinder the tip internal diameter 2.5mm, the wall thickness 0.25mm of thermal resistance shield 1 of shield 1.
As shown in Fig. 2, above-mentioned thermal resistance shield 1 is greater than 6mm with 4 length of fit of armoured thermocouple cable, first by thermal resistance
Then the two is welded on 4 epitheca of armoured thermocouple cable and completes encapsulation by 1 riveting of shield.Meanwhile armoured thermocouple cable 4
The domed structure of lead welded with thermal resistance 1.As shown in Figure 5, wherein domes integrally include three bending parts, and three
The left part of right side bending part and armoured thermocouple cable distance is L1 in bending part, and the radian of the bending part is R1；It is intermediate
The top of bending part and the left part distance of armoured thermocouple cable are L2, and the radian of the bending part is R2；Left side bending part
Left part distance with armoured thermocouple cable is L3, and the radian of the bending part is R3.L1 be 0.5~1mm, L2 be 2~
3mm, L3 are 3.5~5mm；R1 is 0.75~1.5mm, and R2 is 0.6~1.2mm, and R3 is 0.75~1.5mm.
It is logical to can be seen that public armoured thermocouple cable one end of the invention by the experimental data of embodiment and Fig. 3 to Fig. 4
Cross be shaped as domes guarantee vibration strength and thermal resistance with its weld after occupy shield center；Shield is single-ended closes
Mouth structure guarantees optimizing process while thermal resistance package reliability, reduces cost；Shield and armoured thermocouple cable connect
The mode of laser welding after taking first precompressed to close up is connect, to guarantee to continue excellent leakproofness；Thermal resistance welding, encapsulation after with armour
It fills thermocouple cable and carries out the processing of high temperature binder removal, further strengthen product stability.
Claims (8)
1. a kind of high stability high-temperature temperature sensor, it is characterised in that: including sequentially connected thermal resistance shield (1), armour
Fill thermocouple cable (4), high temperature wire (8) and connector (9)；The internal inductive head centre bit of the thermal resistance shield (1)
The place of setting is equipped with thermal resistance (2), and the other end pin of thermal resistance (2) is connected with armoured thermocouple cable (4) one end pin, armouring
The other end pin of thermocouple cable (4) successively draws high temperature wire (8) and connector (9)；Armoured thermocouple cable (4) with
Realize that inductive head encapsulates between thermal resistance shield (1) by welding；
Thermostable heat-conductive glue (3) are filled in the periphery of the internal thermal resistance (2) of thermal resistance shield (1), the high temperature resistant is led
Hot glue (3) its raw material includes silicon oxide powder and water；And the mass percent of silicon oxide powder and water be (100:16)~(100:
14)；Its it is specific the preparation method comprises the following steps:
1) oxide powder and water of corrresponding quality percentage, are weighed, and is stirred for being uniformly mixed；
2), the mixed solution in step 1) is poured into inside thermal resistance shield, then room temperature 8h；
3) solution after standing in step 2), is warming up to 120 DEG C from room temperature, entire heating time is 20min；And by the heating
120 DEG C of solution constant temperature afterwards place 1h；
4) solution that step 3) obtains, is warming up to 700 DEG C from 120 DEG C, it is entire to heat used time 3h；And by 700 DEG C of the solution
Constant temperature places 1h；
5) the 700 DEG C of solution obtained in step 4), are cooled to 250 DEG C, entire temperature fall time used time 2.5h.
2. high stability high-temperature temperature sensor according to claim 1, it is characterised in that: the silicon oxide powder and
The quality of water compares respectively are as follows: 100:15.
3. high stability high-temperature temperature sensor according to claim 1, it is characterised in that: the thermostable heat-conductive glue
(3) preparation process carries out completing heating by uniformly distributed heater strip in high temperature draft glue discharging furnace, completes to cool down by blower.
4. high stability high temperature sensor according to claim 1, it is characterised in that: the thermal resistance shield (1)
For single-ended closed configuration, forward tip is arcuation enclosed construction, and leads between the rear part and armoured thermocouple cable (4) outer wall
Cross welding encapsulation；The production material of thermal resistance shield (1) is SUS310S stainless steel, and the tip internal diameter of thermal resistance shield (1) is
2.3-2.5mm, the wall thickness of thermal resistance shield (1) are 0.25-0.28mm.
5. high stability high temperature sensor according to claim 1, it is characterised in that: the thermal resistance shield (1)
With armoured thermocouple cable (4) assembly length be greater than 6mm, first by thermal resistance shield (1) riveting armoured thermocouple cable (4) outside
On sheath, then the two is welded and completes encapsulation.
6. high stability high temperature sensor according to claim 1, it is characterised in that: the armoured thermocouple cable
(4) with the domed structure of lead tail end of thermal resistance (1) welding, the domes integrally include three bending parts, three foldings
The left part of right side bending part and armoured thermocouple cable distance is L1 in turn of bilge, and the radian of the bending part is R1；Centre folding
The top of turn of bilge and the left part distance of armoured thermocouple cable are L2, and the radian of the bending part is R2；Left side bending part with
The left part distance of armoured thermocouple cable is L3, and the radian of the bending part is R3.
7. high stability high temperature sensor according to claim 6, it is characterised in that: the L1 is 0.5~1mm,
L2 is 2~3mm, and L3 is 3.5~5mm；The R1 is 0.75~1.5mm, and R2 is 0.6~1.2mm, and R3 is 0.75~1.5mm.
8. high stability high temperature sensor according to claim 1, it is characterised in that: further include flange and hood；
The flange welding is in being also cased with nut on the tail end periphery of armoured thermocouple cable, armoured thermocouple cable, and nut is in flange
It moves and rotates between connector, the hood and armoured thermocouple cable weld, and wrap conducting wire and cold end is completed in necking
Encapsulation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910652824.XA CN110375869A (en) | 2019-07-19 | 2019-07-19 | A kind of high stability high-temperature temperature sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910652824.XA CN110375869A (en) | 2019-07-19 | 2019-07-19 | A kind of high stability high-temperature temperature sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110375869A true CN110375869A (en) | 2019-10-25 |
Family
ID=68254074
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910652824.XA Pending CN110375869A (en) | 2019-07-19 | 2019-07-19 | A kind of high stability high-temperature temperature sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110375869A (en) |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000266609A (en) * | 1999-03-19 | 2000-09-29 | Ngk Spark Plug Co Ltd | Temperature sensor |
| JP2005055254A (en) * | 2003-08-01 | 2005-03-03 | Ngk Spark Plug Co Ltd | Temperature sensor and its manufacturing method |
| US20080036569A1 (en) * | 2006-07-21 | 2008-02-14 | Beru Aktiengesellschaft | Temperature sensor for a resistance thermometer, in particular for use in the exhaust gas system of combustion engines |
| JP2008209267A (en) * | 2007-02-27 | 2008-09-11 | Denso Corp | Temperature sensor and method of manufacturing the same |
| WO2014125078A1 (en) * | 2013-02-18 | 2014-08-21 | Klaus Irrgang | Temperature sensor for rapid temperature changes |
| CN204514494U (en) * | 2015-02-13 | 2015-07-29 | 重庆材料研究院有限公司 | Thermometric armoured thermocouple device |
| CN107631812A (en) * | 2017-07-25 | 2018-01-26 | 首凯汽车零部件（江苏）有限公司 | A kind of high temperature compact substance is into porcelain thermistor temperature sensor |
| CN207019808U (en) * | 2017-07-31 | 2018-02-16 | 久茂自动化(大连)有限公司 | Abrasion resistant thermocouple |
| CN108332868A (en) * | 2017-01-20 | 2018-07-27 | 广东美的生活电器制造有限公司 | Temperature sensor assembly and cooking machine |
| CN109556750A (en) * | 2019-01-23 | 2019-04-02 | 浙江泰索科技有限公司 | A kind of high temperature resisting thermocouple exhaust gas temperature sensor |
| CN210774403U (en) * | 2019-07-19 | 2020-06-16 | 首凯汽车零部件（江苏）有限公司 | High-stability high-temperature sensor |
-
2019
- 2019-07-19 CN CN201910652824.XA patent/CN110375869A/en active Pending
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000266609A (en) * | 1999-03-19 | 2000-09-29 | Ngk Spark Plug Co Ltd | Temperature sensor |
| JP2005055254A (en) * | 2003-08-01 | 2005-03-03 | Ngk Spark Plug Co Ltd | Temperature sensor and its manufacturing method |
| US20080036569A1 (en) * | 2006-07-21 | 2008-02-14 | Beru Aktiengesellschaft | Temperature sensor for a resistance thermometer, in particular for use in the exhaust gas system of combustion engines |
| JP2008209267A (en) * | 2007-02-27 | 2008-09-11 | Denso Corp | Temperature sensor and method of manufacturing the same |
| WO2014125078A1 (en) * | 2013-02-18 | 2014-08-21 | Klaus Irrgang | Temperature sensor for rapid temperature changes |
| CN204514494U (en) * | 2015-02-13 | 2015-07-29 | 重庆材料研究院有限公司 | Thermometric armoured thermocouple device |
| CN108332868A (en) * | 2017-01-20 | 2018-07-27 | 广东美的生活电器制造有限公司 | Temperature sensor assembly and cooking machine |
| CN107631812A (en) * | 2017-07-25 | 2018-01-26 | 首凯汽车零部件（江苏）有限公司 | A kind of high temperature compact substance is into porcelain thermistor temperature sensor |
| CN207019808U (en) * | 2017-07-31 | 2018-02-16 | 久茂自动化(大连)有限公司 | Abrasion resistant thermocouple |
| CN109556750A (en) * | 2019-01-23 | 2019-04-02 | 浙江泰索科技有限公司 | A kind of high temperature resisting thermocouple exhaust gas temperature sensor |
| CN210774403U (en) * | 2019-07-19 | 2020-06-16 | 首凯汽车零部件（江苏）有限公司 | High-stability high-temperature sensor |
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