CN203688106U - Temperature sensor of elliptic contact head - Google Patents
Temperature sensor of elliptic contact head Download PDFInfo
- Publication number
- CN203688106U CN203688106U CN201420053637.2U CN201420053637U CN203688106U CN 203688106 U CN203688106 U CN 203688106U CN 201420053637 U CN201420053637 U CN 201420053637U CN 203688106 U CN203688106 U CN 203688106U
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- China
- Prior art keywords
- sleeve
- sheath
- temperature sensor
- temperature
- heart yearn
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- Expired - Lifetime
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- 238000011049 filling Methods 0.000 claims description 12
- 239000000463 material Substances 0.000 claims description 11
- 238000003825 pressing Methods 0.000 claims description 4
- 238000010276 construction Methods 0.000 claims description 3
- 238000007599 discharging Methods 0.000 claims description 2
- 239000000945 filler Substances 0.000 abstract 1
- 238000003466 welding Methods 0.000 description 10
- 238000000034 method Methods 0.000 description 7
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 6
- 239000007789 gas Substances 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 5
- 239000000843 powder Substances 0.000 description 4
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 229910052757 nitrogen Inorganic materials 0.000 description 3
- 238000005498 polishing Methods 0.000 description 3
- 230000001681 protective effect Effects 0.000 description 3
- 230000032683 aging Effects 0.000 description 2
- 238000005538 encapsulation Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000000746 purification Methods 0.000 description 2
- 230000001603 reducing effect Effects 0.000 description 2
- 239000004071 soot Substances 0.000 description 2
- 239000004215 Carbon black (E152) Substances 0.000 description 1
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- GQPLMRYTRLFLPF-UHFFFAOYSA-N Nitrous Oxide Chemical class [O-][N+]#N GQPLMRYTRLFLPF-UHFFFAOYSA-N 0.000 description 1
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004202 carbamide Substances 0.000 description 1
- 229910002091 carbon monoxide Inorganic materials 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 230000003197 catalytic effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 210000002268 wool Anatomy 0.000 description 1
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- Measuring Temperature Or Quantity Of Heat (AREA)
Abstract
The utility model relates to the technical field of temperature sensors, and especially provides a temperature sensor of an elliptic contact head. The temperature sensor is used for measuring temperature of exhausted tail gas in an automobile exhaust pipe and converting the temperature into a usable output signal. The temperature sensor is equipped with an armoured thermocouple cable. The armoured thermocouple cable comprises a core wire and a sheath wrapping the core wire. The front end of the core wire is connected with a temperature detector. The rear end of the core wire is connected with a wire. The front end of the sheath is sleeved with a sleeve. The internal space formed between the sheath and the sleeve is loaded with fillers. The cross section shape of the sleeve is elliptic. A cover cap with an elliptic cross section is arranged at the front end of the sleeve and thus the sleeve is an enclosed structure. The temperature sensor solves the problem of sheath deformation caused by gas expansion of a core wire in a sheath at a high temperature in a temperature sensor in the prior art.
Description
Technical field
The utility model relates to the technical field of temperature sensor, especially a kind of temperature sensor of ellipse contact head.
Background technology
Motor vehicle emission pollutant out mainly comprises hydrocarbon, nitrogen oxygenate, carbon monoxide, particulate etc., active layer by better catalytic converter, air injection reaction and with the application of the technology such as the exhaust gas recycling system of cooling device, control and reduce automotive emissions, to reach the standard below specified value.
Also there are two kinds of main upgrading schemes four epoch in state: a class is by using SCR technology, utilizing urea liquid to process the oxides of nitrogen in tail gas; Also having a class is by particle trapper or particulate catalyst, the EGR Technology that the particulate producing for burning is processed.
At present, domestic Ji Jia large-scale diesel engine factory mostly reduces soot by emission controls by improving combustion, then utilizes SCR Techniques For Reducing discharged nitrous oxides, to meet the regulation to soot and oxides of nitrogen in state's IV Abgasgesetz.In two above-mentioned class schemes, all need temperature to detect, and feed back to system, by system, discharge is processed to reach emission standard, need thus to adopt pyrostat to monitor in real time.
But, it is generally after chip and heart yearn welding, to be installed in airtight protective metal shell that existing vehicle exhaust is measured with pyrostat, because it is used in hot environment, gas in protective metal shell can expand phenomenon under hot environment for a long time, easily cause protective metal shell to deform, and then affected the thermometric effect of sensor
Summary of the invention
The technical problems to be solved in the utility model is: in order to solve the problem proposing in above-mentioned background technology, the utility model provides a kind of temperature sensor of ellipse contact head, and the temperature sensor that solves prior art issues angry measure expansion and cause the problem of sheath distortion because of the heart yearn in sheath in hot environment.
The utility model solves the technical scheme that its technical matters adopts: a kind of temperature sensor of ellipse contact head, the temperature of the tail gas of discharging for measured automobiles gas outlet also becomes usable output signal by temperature inversion, there is armoured thermocouple cable, armoured thermocouple cable comprises heart yearn and is coated on the sheath outside heart yearn, the front end of heart yearn is connected with hygrosensor, the rear end of heart yearn is connected with wire, the front end sleeve of sheath is provided with sleeve, the inner space forming between sheath and sleeve is filled with filling material, the cross sectional shape of sleeve is oval, being provided with cross sectional shape at the front end sleeve of sleeve is oval-shaped block, make sleeve become enclosed construction.
Further limit: the leading section of wire is coated with middle cover, and middle cover is coated with overcoat, and the leading section of overcoat is sheathed on the rearward end of sheath, and armoured thermocouple cable is electrically connected with wire, in the back segment portion of middle cover and overcoat, jointly compresses and form pressing groove.
Further limit: the middle part of sheath is installed with locating flange and is positioned at the mounting nuts of locating flange top.
The beneficial effects of the utility model: the temperature sensor of this ellipse contact head, by auto-filling filling material in sheath, because this filling material had both met high temperature, close with the thermal expansivity of sheath again, and can reach certain insulating requirements in the time of high temperature, therefore the temperature sensor that this temperature sensor solves prior art issues angry measure expansion and causes the problem of sheath distortion because of the heart yearn in sheath in hot environment.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the utility model is further illustrated.
Fig. 1 is the structural representation of the temperature sensor of ellipse contact head of the present utility model;
Fig. 2 is that the temperature sensor of ellipse contact head of the present utility model is arranged on the structural representation on automobile exhaust pipe;
Fig. 3 is the structural representation of heart yearn.
In figure 1, heart yearn, 1-1, boss structure, 2, sheath, 3, hygrosensor, 4, wire, 5, sleeve, 6, filling material, 7, block, 8, middle cover, 9, overcoat, 10, pressing groove, 11, locating flange, 12, mounting nuts, 13, gas outlet, 14, mount pad.
Embodiment
The temperature sensor of ellipse contact head as depicted in figs. 1 and 2, there is armoured thermocouple cable, armoured thermocouple cable comprises heart yearn 1 and is coated on the sheath 2 outside heart yearn 1, the front end of heart yearn 1 is connected with hygrosensor 3, the rear end of heart yearn 1 is connected with wire 4, the front end sleeve of sheath 2 is provided with sleeve 5, the inner space forming between sheath 2 and sleeve 5 is filled with filling material 6, wherein filling material 6 can be selected the material of MGO powdery, sleeve 5 cross sectional shapes are oval, being provided with cross sectional shape at the front end sleeve of sleeve 5 is oval-shaped block 7, make 5 one-tenth enclosed constructions of sleeve.
The leading section of wire 4 is coated with middle cover 8, and middle cover 8 is coated with overcoat 9, and the leading section of overcoat 9 is sheathed on the rearward end of sheath 2, and armoured thermocouple cable is electrically connected with wire 4, jointly compresses and form pressing groove 10 in the back segment portion of middle cover 8 and overcoat 9.Wire 4 is subject to this snap-in force to act on afterbody and forms throat structure, the throat structure of wire 4 is fixing cord 4 effectively, also can avoid water or other liquid to enter in wire 4 and cause the problem of sensor failure, the diameter of wire 4 reducings and width will be considered the extensibility of material.
The middle part of sheath 2 is installed with locating flange 11 and is positioned at the mounting nuts 12 of locating flange 11 tops, to facilitate on the mount pad 14 of installation of sensors on automobile exhaust pipe 13.
The preparation method of the temperature sensor of this ellipse contact head, the method comprises the following steps:
One, first with rag wheel, the part of the heart yearn 1 being connected with hygrosensor 3 is carried out to polishing, after heart yearn 1 and hygrosensor 3 are welded mutually, rag wheel wherein can be wool polishing wheel, it is to very smooth of heart yearn 1 polishing grinding; The wherein part of the heart yearn 1 being connected with hygrosensor 3 in step 1, utilize stamping machine to carry out punching press to it, can form boss structure 1-1 at the front end of heart yearn 1, as shown in Figure 3, adopt again welding gear to weld two heart yearns 1, allow on two heart yearns 1 boss structure 1-1 separately weld together, wherein welding gear can be resistance welding equipment, on two heart yearns 1, the boss structure 1-1 separately stretching resistance numerical value after welding together is generally 16～17N, and being does not have 2 times of stretching resistance numerical value after two heart yearns, 1 welding of boss structure 1-1;
Two, then at the sheathed sleeve 5 of front end of sheath 2, hygrosensor 3 is placed in sleeve 5, and the front end of hygrosensor 3 in sleeve 5, and sheath 2 and the connecting portion of sleeve 5 is welded with welding machine, welding machine wherein can be laser welder;
Three, adopt again powder filling equipment toward the filling filling material 6 in inner space forming between sheath 2 and sleeve 5;
Four, again the front end of sleeve 5 is carried out to encapsulation process; Wherein in step 4, the front end of sleeve 5 is carried out to encapsulation process, first the front end of sleeve 5 is flattened and forms ellipticity, 3 type directions of the direction of its flattening and hygrosensor are consistent, sleeve 5 is exerted pressure and made it near the long-pending larger end face of 3 profiles of hygrosensor, and then at the sheathed block 7 of front end of sleeve 5, and adopting welding machine to weld sleeve 5 and the connecting portion of block 7, welding machine is wherein laser welder.
Five, again the sensor after powder filling is carried out to high temperature purification processing, purified treatment temperature is 840 ℃～860 ℃, and the purified treatment time is 2～3 minutes, and high temperature purification processing can be absorbed the impurity in powder, also the unnecessary material in powder can be emitted;
Six, connect wire 4 in the rear end of heart yearn 1 again;
Seven, sensor is carried out to entirety again and dry, bake out temperature is 90 ℃～110 ℃;
Eight, finally sensor is carried out to high temperature ageing processing, burin-in process temperature is 840 ℃～860 ℃, and ageing treatment time is 24 hours, after burin-in process, sensor is being carried out to oil inspection.
Claims (3)
1. the temperature sensor of an ellipse contact head, the temperature of the tail gas of discharging for measured automobiles gas outlet also becomes usable output signal by temperature inversion, it is characterized in that: there is armoured thermocouple cable, armoured thermocouple cable comprises heart yearn (1) and is coated on the outer sheath (2) of heart yearn (1), the front end of heart yearn (1) is connected with hygrosensor (3), the rear end of heart yearn (1) is connected with wire (4), the front end sleeve of sheath (2) is provided with sleeve (5), the inner space forming between sheath (2) and sleeve (5) is filled with filling material (6), the cross sectional shape of sleeve (5) is oval, being provided with cross sectional shape at the front end sleeve of sleeve (5) is oval-shaped block (7), make sleeve (5) become enclosed construction.
2. the temperature sensor of ellipse contact head as claimed in claim 1, it is characterized in that: the leading section of described wire (4) is coated with middle cover (8), middle cover (8) is coated with overcoat (9), the leading section of overcoat (9) is sheathed on the rearward end of described sheath (2), described armoured thermocouple cable is electrically connected with wire (4), in the back segment portion of middle cover (8) and overcoat (9), jointly compresses and form pressing groove (10).
3. the temperature sensor of ellipse contact head as claimed in claim 1 or 2, is characterized in that: the middle part of described sheath (2) is installed with locating flange (11) and is positioned at the mounting nuts (12) of locating flange (11) top.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420053637.2U CN203688106U (en) | 2014-01-27 | 2014-01-27 | Temperature sensor of elliptic contact head |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420053637.2U CN203688106U (en) | 2014-01-27 | 2014-01-27 | Temperature sensor of elliptic contact head |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203688106U true CN203688106U (en) | 2014-07-02 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420053637.2U Expired - Lifetime CN203688106U (en) | 2014-01-27 | 2014-01-27 | Temperature sensor of elliptic contact head |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203688106U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105436642A (en) * | 2014-08-21 | 2016-03-30 | 刘浩荫 | Manufacturing method for temperature sensor and temperature sensor thereof |
| 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 |
| CN113483903A (en) * | 2021-06-04 | 2021-10-08 | 东风汽车集团股份有限公司 | Exhaust temperature sensor and manufacturing method thereof |
-
2014
- 2014-01-27 CN CN201420053637.2U patent/CN203688106U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105436642A (en) * | 2014-08-21 | 2016-03-30 | 刘浩荫 | Manufacturing method for temperature sensor and temperature sensor thereof |
| CN105436642B (en) * | 2014-08-21 | 2018-03-20 | 冯必骏 | The manufacture method and its temperature inductor of a kind of temperature inductor |
| 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 |
| CN113483903A (en) * | 2021-06-04 | 2021-10-08 | 东风汽车集团股份有限公司 | Exhaust temperature sensor and manufacturing method thereof |
| CN113483903B (en) * | 2021-06-04 | 2023-12-26 | 东风汽车集团股份有限公司 | Exhaust gas temperature sensor and method for manufacturing exhaust gas temperature sensor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140702 |
|
| CX01 | Expiry of patent term |