CN105387946A - High temperature resistant temperature sensor - Google Patents
High temperature resistant temperature sensor Download PDFInfo
- Publication number
- CN105387946A CN105387946A CN201510912022.XA CN201510912022A CN105387946A CN 105387946 A CN105387946 A CN 105387946A CN 201510912022 A CN201510912022 A CN 201510912022A CN 105387946 A CN105387946 A CN 105387946A
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- CN
- China
- Prior art keywords
- temperature sensor
- isolated body
- thermistor chip
- semicircle housing
- case
- 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.)
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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
- G01K1/08—Protective devices, e.g. casings
- G01K1/12—Protective devices, e.g. casings for preventing damage due to heat overloading
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Measuring Temperature Or Quantity Of Heat (AREA)
- Thermistors And Varistors (AREA)
Abstract
The invention discloses a high temperature resistant temperature sensor. The high temperature resistant temperature sensor includes a thermistor chip, an isolation body, a shell, an armoring pipe and a tail cable; core line plugging holes of the armoring pipe are arranged at two sides of a protruding bar or a recessed groove in the isolation body; one end of the armoring pipe is welded to the tail cable; the thermistor chip is arranged in the isolation body; two core lines are welded to the two core line plugging holes of the armoring pipe; and the shell is buckled at the outer side of the isolation body and is in plugging connection with the armoring pipe. According to the high temperature-resistant temperature sensor of the invention, the isolation body is made of a high temperature resistant and high-insulating ceramic material, and the thermistor chip and the core lines connected with the armoring pipe are reasonably installed in the isolation body, and therefore, the temperature resistance limit of the high temperature resistant temperature sensor of the invention is improved, and the defects of high possibility of being burnt and damaged, low work reliability and high possibility of data distortion of a temperature sensor under a high-temperature working environment can be eliminated.
Description
Technical field
The present invention relates to detecting instrument field of instrumentation technology, especially a kind of resistant to elevated temperatures temperature sensor.
Background technology
Temperature sensor is widely used in the field such as electromechanical equipment, motor car engine and household electrical appliance of industry, plays the transmitting effect of temperature detection, control and temperature signal.As for automobile engine tail gas temperature sensing, engine fuel whether Thorough combustion can be judged according to detecting temperature, carry out respective handling the need of the tail gas discharged it, to prevent its contaminated environment, measure the levels of emissions of vehicle exhaust.Temperature sensor sensor thermistor chip is installed on the position that equipment needs detecting temperature, the cable section of Sensor tail is connected with electrical control instrument, temperature sensor is obtained by thermistor chip, and be transferred to electrical control instrument by the change of its resistance value, can obtain the temperature being detected position, electrical control instrument sends corresponding instruction according to the operation of this temperature to equipment.The temperature sensor of prior art, because the mode of the isolated body many employings encapsulating between thermistor chip and case completes, Problems existing is, the isolated body of encapsulating can only use under the environment below 300 DEG C, the request for utilization of environmental baseline at higher temperature cannot be met, trace it to its cause is that the working environment of pyrostat exists the huge temperature difference, can ftracture after encapsulating expands with heat and contract with cold, cause the critical defect that thermistor heart yearn is broken by encapsulating, temperature sensor is caused easily to be burnt, damage, functional reliability reduces, data distortion, constrain the application of temperature sensor under high-temperature work environment.
Summary of the invention
The resistant to elevated temperatures temperature sensor of the one that the object of the invention is to provide for the deficiencies in the prior art, the present invention adopts ceramic material isolated body that is high temperature resistant, high-insulativity, and make thermistor chip and be reasonably installed in isolated body with the heart yearn of armored pipes line, improve resistance to extreme temperature of the present invention, overcome temperature sensor easily to burn under high-temperature work environment, damage, the low and volatile genuine defect of data of functional reliability.
The concrete technical scheme realizing the object of the invention is:
A kind of resistant to elevated temperatures temperature sensor, its feature comprises thermistor chip, isolated body, case, armored pipes and tail cable, described thermistor chip is provided with two heart yearns, one end of armored pipes is provided with two heart yearn jacks, case is the cylindrical drum that one end is closed, its openend is provided with step, isolated body is fastened by the first semicircle housing and the second semicircle housing and forms, wherein, one section of convex tendon is provided with vertically in first semicircle housing, one section of groove is provided with vertically in second semicircle housing, after first semicircle housing and the second semicircle housing fasten, this section of isolated body is also divided into two cavitys by convex tendon and engagement vertically,
Two heart yearn jacks of described armored pipes one end are located at the both sides of isolated body inner convex rib or groove, the other end of armored pipes welds with tail cable, thermistor chip is located in isolated body, and two heart yearns weld with two heart yearn jacks of armored pipes respectively, case spiral-lock is in the outside of isolated body, and step on case and armored pipes grafting; Described isolated body is ceramic material; Described case is that stainless steel material makes.
The present invention adopts ceramic material isolated body that is high temperature resistant, high-insulativity, and make thermistor chip and be reasonably installed in isolated body with the heart yearn of armored pipes line, improve resistance to extreme temperature of the present invention, overcome temperature sensor easily to burn under high-temperature work environment, damage, the low and volatile genuine defect of data of functional reliability.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention;
Fig. 2 is the structural representation of isolated body;
Fig. 3 is the schematic cross-section of the first semicircle housing of isolated body;
Fig. 4 is the schematic cross-section of the second semicircle housing of isolated body.
Embodiment
Consult Fig. 1, Fig. 2, Fig. 3, Fig. 4, the present invention includes thermistor chip 1, isolated body 2, case 3, armored pipes 4 and tail cable 5, described thermistor chip 1 is provided with two heart yearns 11, one end of armored pipes 4 is provided with two heart yearn jacks 41, the cylindrical drum that case 3 is closed for one end, its openend is provided with step 31, isolated body 2 is fastened by the first semicircle housing 21 and the second semicircle housing 22 and forms, wherein, one section of convex tendon 211 is provided with vertically in first semicircle housing 21, one section of groove 221 is provided with vertically in second semicircle housing 22, after first semicircle housing 21 and the second semicircle housing 22 fasten, convex tendon 211 engages with groove 221 and this section of isolated body 2 is divided into two cavitys vertically,
Two heart yearn jacks 41 of described armored pipes 4 one end are located at the both sides of isolated body (2) inner convex rib 211 or groove 221, the other end of armored pipes 4 welds with tail cable 5, thermistor chip 1 is located in isolated body 2, and two heart yearns 11 weld with two heart yearn jacks 41 of armored pipes 4 respectively, case 3 spiral-lock is in the outside of isolated body 2, and step on case 3 31 and armored pipes 4 grafting; Described isolated body 2 is ceramic material; Described case 3 is stainless steel material making.
Embodiment:
Assembling of the present invention:
Consult Fig. 1, Fig. 2, Fig. 3, Fig. 4, because isolated body 2 of the present invention is formed by the first semicircle housing 21 and the second semicircle housing 22 fastening, wherein, one section of convex tendon 211 is provided with vertically in first semicircle housing 21, one section of groove 221 is provided with vertically in second semicircle housing 22, after the first semicircle housing 21 and the second semicircle housing 22 fasten, convex tendon 211 engages with groove 221 and this section of isolated body 2 is divided into two cavitys vertically, and another section not being provided with convex tendon 211 or groove 221 in isolated body 2 still remains a cavity, be thermistor chip chamber;
During assembling, two of thermistor chip 1 heart yearns 11 are welded with two heart yearn jacks 41 of armored pipes 4 one end respectively; The other end of armored pipes 4 is welded with tail cable 5; Thermistor chip 1 is located in the thermistor chip chamber of isolated body 2, two heart yearns 11 after welding and two heart yearn jacks 41 is located at respectively in two cavitys that isolated body 2 separated by convex tendon 211; First semicircle housing 21 and the second semicircle housing 22 are fastened, the convex tendon 211 in the first semicircle housing 21 is engaged with the groove 221 in the second semicircle housing 22; Finally by case 3 spiral-lock in the outside of isolated body 2, and step on case 3 31 and armored pipes 4 grafting, the present invention installs.
Use of the present invention:
Consult Fig. 1, Fig. 2, case 3 end of thermistor chip 1 will be provided with, the equipment of being installed on needs the position of detecting temperature, the tail cable 5 of sensor is connected with electrical control instrument, temperature sensor is obtained by thermistor chip 1, and be transferred to electrical control instrument by the change of its resistance value, the temperature being detected position can be obtained, electrical control instrument sends corresponding instruction according to the operation of this temperature to equipment, realizes the present invention under high ambient conditions to the detection of device temperature and control.
Isolated body 2 of the present invention is burnt cast-type by stupalith, case 3 is by stainless steel material drawing and forming, not only have rational in infrastructure, assemble simple and convenient, reduce the advantage of manufacturing cost, and stupalith and stainless steel material all have the good advantage of stability of material under hot environment, make the reliability of product be improved.
Claims (3)
1. a resistant to elevated temperatures temperature sensor, it is characterized in that it comprises thermistor chip (1), isolated body (2), case (3), armored pipes (4) and tail cable (5), described thermistor chip (1) is provided with two heart yearns (11), one end of armored pipes (4) is provided with two heart yearn jacks (41), the cylindrical drum that case (3) is closed for one end, its openend is provided with step (31), isolated body (2) is fastened by the first semicircle housing (21) and the second semicircle housing (22) and forms, wherein, one section of convex tendon (211) is provided with vertically in first semicircle housing (21), one section of groove (221) is provided with vertically in second semicircle housing (22), after first semicircle housing (21) and the second semicircle housing (22) fasten, convex tendon (211) engages with groove (221) and this section of isolated body (2) is divided into two cavitys vertically,
Two heart yearn jacks (41) of described armored pipes (4) one end are located at the both sides of isolated body (2) inner convex rib (211) or groove (221), the other end of armored pipes (4) welds with tail cable (5), thermistor chip (1) is located in isolated body (2), and two heart yearns (11) are welded with two heart yearn jacks (41) of armored pipes (4) respectively, case (3) spiral-lock is in the outside of isolated body (2), and step (31) on case (3) and armored pipes (4) grafting.
2. the resistant to elevated temperatures temperature sensor of one according to claim 1, is characterized in that isolated body (2) is ceramic material.
3. the resistant to elevated temperatures temperature sensor of one according to claim 1, is characterized in that case (3) is for stainless steel material making.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510912022.XA CN105387946B (en) | 2015-12-11 | 2015-12-11 | A kind of resistant to elevated temperatures temperature sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510912022.XA CN105387946B (en) | 2015-12-11 | 2015-12-11 | A kind of resistant to elevated temperatures temperature sensor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105387946A true CN105387946A (en) | 2016-03-09 |
| CN105387946B CN105387946B (en) | 2018-02-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510912022.XA Active CN105387946B (en) | 2015-12-11 | 2015-12-11 | A kind of resistant to elevated temperatures temperature sensor |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2045108U (en) * | 1989-03-03 | 1989-09-27 | 张殿生 | Precision armored thermal resistance |
| US4929092A (en) * | 1987-06-12 | 1990-05-29 | Mitsubishi Jukogyo Kabushiki Kaisha | Resistance temperature detector |
| JP2618562B2 (en) * | 1992-06-01 | 1997-06-11 | 東京瓦斯株式会社 | Explosion-proof end of corrugated metal tube-coated inorganic insulated cable |
| WO2005075949A1 (en) * | 2004-02-09 | 2005-08-18 | Temperaturmesstechnik Geraberg Gmbh | High-temperature sensor |
| CN1657891A (en) * | 2005-03-04 | 2005-08-24 | 孙文忠 | Built-in armoured Pt thermal resistance and its manufacturing method |
| CN102235914A (en) * | 2010-04-30 | 2011-11-09 | 台达电子工业股份有限公司 | Temperature sensing module and auxiliary fixed seat body thereof |
| CN203893950U (en) * | 2014-06-03 | 2014-10-22 | 深圳市东河仪表有限公司 | Temperature sensor |
-
2015
- 2015-12-11 CN CN201510912022.XA patent/CN105387946B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4929092A (en) * | 1987-06-12 | 1990-05-29 | Mitsubishi Jukogyo Kabushiki Kaisha | Resistance temperature detector |
| CN2045108U (en) * | 1989-03-03 | 1989-09-27 | 张殿生 | Precision armored thermal resistance |
| JP2618562B2 (en) * | 1992-06-01 | 1997-06-11 | 東京瓦斯株式会社 | Explosion-proof end of corrugated metal tube-coated inorganic insulated cable |
| WO2005075949A1 (en) * | 2004-02-09 | 2005-08-18 | Temperaturmesstechnik Geraberg Gmbh | High-temperature sensor |
| CN1657891A (en) * | 2005-03-04 | 2005-08-24 | 孙文忠 | Built-in armoured Pt thermal resistance and its manufacturing method |
| CN102235914A (en) * | 2010-04-30 | 2011-11-09 | 台达电子工业股份有限公司 | Temperature sensing module and auxiliary fixed seat body thereof |
| CN203893950U (en) * | 2014-06-03 | 2014-10-22 | 深圳市东河仪表有限公司 | Temperature sensor |
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| CN105387946B (en) | 2018-02-23 |
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