CN1185472C - Heat-measuring type sensor for judging foam medium state - Google Patents
Heat-measuring type sensor for judging foam medium state Download PDFInfo
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- CN1185472C CN1185472C CNB021036055A CN02103605A CN1185472C CN 1185472 C CN1185472 C CN 1185472C CN B021036055 A CNB021036055 A CN B021036055A CN 02103605 A CN02103605 A CN 02103605A CN 1185472 C CN1185472 C CN 1185472C
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- sensor
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- resistance wires
- heating
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Abstract
The present invention relates to a calorimetric sensor for judging foam medium states, which belongs to the technical field of the manufacturing technologies of temperature sensors and the measurement of the foam medium states. The present invention is characterized in that the calorimetric sensor comprises thermocouples coaxially hung in a ceramic tube, resistance wires winding around the outer wall of the ceramic tube, lead wires for heating connected with the resistance wires, ceramic insulation packages for orderly packing the resistance wires from interior to exterior in a radial direction and the metal containment shells of the ceramic insulation packages, insulation material arranged on the ends of the resistance wires for orderly coating the thermocouples from interior to exterior in a radial direction and the containment shells of the insulation material, and armoured cables connected with the metal containment shells; the present invention is also a differential sensor composed of the two calorimetric sensors whose tail ends are fixedly connected together. The present invention has the advantage of simple installation and low cost, can be directly installed in various existing industrial production facilities, can continuously operate for a long time under a maintenance-free condition, and can be used in various industrial occasions, such as foam flotation, beer manufacture, fire protection, paper manufacture, radioactive waste water concentration, detergent production, etc.
Description
Technical field
The temperature sensor that a kind of difference of measuring heating lower sensor temperature and environment temperature is used belongs to technical field of sensor manufacture, is applicable to whether the identification medium belongs to foam state.
Background technology
The present invention relates to a kind of sensor of armouring heating element formation of built-in thermoelectric idol.
Granted publication day is 1996.3.20, the patent No. is ZL92111801.5, name is called " injection molding probe that has coaxial thermocouple tube and heating element ", Granted publication day is 2001.9.5, the patent No. is ZL00249184.2, Chinese invention patent and Granted publication day that name is called " the armouring heating element of built-in thermoelectric idol " are 1986.10.14, the patent No. is in 4617455 the foreign patent of invention, all relate to this sensor, their feature is to close thermopair and heating element as a whole by soldering or armouring technology, thereby make heating element give new temp monitoring function, and have the various environment of adaptation, highly sensitive, the advantage of good reliability and long service life.
Summary of the invention
The purpose of this invention is to provide a kind of the heating down temperature of sensor and sensor of the residing environment temperature of heating medium not in the medium measured, promptly must be simultaneously and measure the temperature separately of these two tested physical objecies in real time, both difference temperature are judged the input parameter of foam medium state as the follow-up data treating apparatus.Obviously, above-mentioned armouring heated type temperature sensor can not satisfy this requirement, and sensor provided by the invention must make improvements on number of elements, structure, connected mode, forms of sensor.Because the sensor element and the sensor that use adopt similar structure, thereby has the advantage of the various environment of adaptation, highly sensitive, good reliability and long service life.
The invention is characterized in: the temperature sensor that the difference of described measurement heating lower sensor temperature and environment temperature is used, it is to be fixedly attached to the differential type temperature sensor that following sensor element together constitutes by two at afterbody, and wherein each sensor element contains; The outstanding coaxially thermopair that is contained in the insulating ceramics pipe, be wrapped in heating on the above-mentioned ceramic pipe outer wall with resistance wire and the lead that is attached thereto, radially successively by the insulating medium and the metal casing of lining and outer package resistance wire, radially encase the insulating material and the involucrum thereof of thermopair successively by lining and other places in the resistance wire end, the four-core sheathed cable that links to each other with metal casing.
Use proof: it can record the environment temperature and the heated temperatures of sensor own at medium place, sensor place simultaneously, has reached its intended purposes.
Description of drawings
Fig. 1, sensor element structural drawing of the present invention;
Fig. 2, sensor synoptic diagram of the present invention.
Embodiment
Ask for an interview Fig. 2, sensor of the present invention comprises the sensor element 11 of two same structures, and the shell of sensor element 11 is joined by metal casing of using as measuring junction 4 and four-core sheathed cable 13 and forms, with the cover 12 formation sensors that are fixed together.
Fig. 1 is the structural drawing of sensor element 11, wherein 1 is the outstanding K type thermopair that is contained in the insulating ceramics pipe 10, the 2nd, be wrapped in the double wrap resistance wire on ceramic pipe 10 outer walls, the 3rd, the ceramic insulation medium packaging body of encapsulation double wrap resistance wire 2, the 4th, the metal casing of insulating medium packaging body 3 outsides, the 5th, the heating lead that links to each other with double wrap resistance wire 2 with heating, the 6th, the K type compensation lead of thermocouple that links to each other with K type thermopair 1, the 7th, with the involucrum of 1Cr18Ni9Ti material, the 8th, MgO powder insulating material, the 9th, the argon arc welding solder joint, the 10th, guarantee the insulating ceramics pipe that insulate between K type thermopair 1 and the resistive heater 2.
Sensor of the present invention adopts a pair of sensor element 11 that has heating arrangement, measure sensor temperature and environment temperature under the fixing heat release amount, promptly when measuring, one of them sensor element 11 is heated by resistance wire, and another does not heat, and sensor is these two temperature values of environment temperature of the heated temperature of output transducer element and medium simultaneously.In follow-up data processing equipment, these two temperature values can be carried out difference calculates, and this difference is converted into characteristic temperature according to heat transfer theory, again by calculated characteristics variation of temperature rate, obtain corresponding medium threshold value identification temperature, at last characteristic temperature and medium threshold value identification temperature are carried out the medium state that place, sensor element 11 places is derived in logic analysis.
Sensor of the present invention since directly the physical quantity of measuring be temperature, generally be applicable to various medium, therefore can use at froth flotation, beer manufacturing, paper-making process, radioactive wastewater to concentrate and multiple industrial occasions such as washing agent production.Sensor is installed simple, and can long-term operation continuously under non-maintaining condition.Sensor is cheap, is suitable for industrial large-scale application.
Claims (2)
1, the temperature sensor that the difference of measurement heating lower sensor temperature and environment temperature is used, it is characterized in that: it is to be fixedly attached to the differential type temperature sensor that sensor element together constitutes by two afterbodys, wherein each sensor element contains: the outstanding coaxially thermopair that is contained in the insulating ceramics pipe, be wrapped in heating on the above-mentioned ceramic pipe outer wall with resistance wire and the lead that is attached thereto, radially successively by the insulating medium and the metal casing of lining and outer package resistance wire, radially encase the insulating material and the involucrum thereof of thermopair successively by lining and other places in the resistance wire end, the four-core sheathed cable that links to each other with metal casing.
2, the temperature sensor of using according to the difference of the measurement of claim 1 heating lower sensor temperature and environment temperature, it is characterized in that: described temperature thermocouple, its model are the K type.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB021036055A CN1185472C (en) | 2002-01-29 | 2002-01-29 | Heat-measuring type sensor for judging foam medium state |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB021036055A CN1185472C (en) | 2002-01-29 | 2002-01-29 | Heat-measuring type sensor for judging foam medium state |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1358989A CN1358989A (en) | 2002-07-17 |
| CN1185472C true CN1185472C (en) | 2005-01-19 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB021036055A Expired - Fee Related CN1185472C (en) | 2002-01-29 | 2002-01-29 | Heat-measuring type sensor for judging foam medium state |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1185472C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101613003A (en) * | 2008-06-13 | 2009-12-30 | 克朗斯股份有限公司 | The equipment and the method that are used for marking plastic containers |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101071654B (en) * | 2007-06-20 | 2010-06-09 | 中国原子能科学研究院 | Single-point contact type sodium leakage detector for sodium-cooled fast reactor main container |
| CN105657873B (en) * | 2014-08-27 | 2019-04-23 | 陈亮 | A kind of manufacture craft of double wrap silk structural resistance silk production heating tube |
| CN107560748B (en) * | 2017-08-09 | 2020-01-24 | 深圳艺点创新科技有限公司 | Electrothermal ceramic device with temperature signal output and temperature monitoring method |
| CN107536114B (en) * | 2017-09-06 | 2018-10-02 | 深圳市新宜康电子技术有限公司 | Accurate field temperature control effect atomization core and preparation method thereof |
| CN117606584A (en) * | 2021-08-02 | 2024-02-27 | 北京锐达仪表有限公司 | Medium layering interface measuring device |
-
2002
- 2002-01-29 CN CNB021036055A patent/CN1185472C/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101613003A (en) * | 2008-06-13 | 2009-12-30 | 克朗斯股份有限公司 | The equipment and the method that are used for marking plastic containers |
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| Publication number | Publication date |
|---|---|
| CN1358989A (en) | 2002-07-17 |
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| PB01 | Publication | ||
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20050119 Termination date: 20110129 |