CN2938049Y - Cotact surface temp measuring device - Google Patents
Cotact surface temp measuring device Download PDFInfo
- Publication number
- CN2938049Y CN2938049Y CN200620050744.5U CN200620050744U CN2938049Y CN 2938049 Y CN2938049 Y CN 2938049Y CN 200620050744 U CN200620050744 U CN 200620050744U CN 2938049 Y CN2938049 Y CN 2938049Y
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- CN
- China
- Prior art keywords
- contact
- thermocouple
- temperature
- thermocouple wire
- wire
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Abstract
Disclosed is a measuring device for measuring the temperatures of a contact surface, comprising two thermocouple wires. The thermocouple wire is coated by an insulating cement and is pasted tightly with an object and passed through the object. The working end of the thermocouple wire is in the same horizontal line with the contact surface; the working end of the thermocouple wire and the contact surface close to each other but do not contact with each other. The two thermocouple wires are connected with the object on the contact surface, which forms a guiding back circuit. The cold end of the thermocouple wire is connected with the data acquisition system of a computer or a temperature measuring instrument by means of a compensation wire. As the temperature measuring point of the utility model directly reaches the contact surface with little thermal inertia and thermal resistance, an accurate and reliable result can be obtained either the surface is in a constant temperature or in a variable temperature with a simple method and more economic thermocouple wire than the traditional one.
Description
Technical field the utility model relates to a kind of surface of contact temperature measuring equipment, belongs to the metrology and measurement field.
Background technology applied optics, radiation or infrared thermometer are accurately measured the surface of contact temperature, because can't the Direct observation surface of contact and can not realize.And with traditional thermocouple thermometer for static surface of contact, though can contact with it to survey surface temperature, but since the thermal inertia of traditional hot galvanic couple and thermal resistance very big also can't be in real time accurate thermometric, the traditional hot galvanic couple can't contact with the surface when surface of contact has relative motion, therefore there is the people to be placed on apart from nearer place, surface, temperature value is extrapolated to the surface with the estimated statement surface temperature from here, and its error of the temperature value that obtains so often exceeds the engineering allowed band and loses using value.
Summary of the invention the utility model provides a kind of surface of contact temperature measuring equipment, solving aircraft, train, automobile, and the bearing shell and the surface of contact temperature survey problems such as detent, friction and antifriction material test, engine inner wall of various plant equipment, application the utility model help the economy, safety of above-mentioned each equipment, reliably turn round and machinery, material etc. the field scientific research is more effective carries out.
The utility model adopts " idol altogether " technology realization surface of contact temperature accurately to measure.
The surface of contact temperature measuring equipment, comprise: two thermocouple wires, thermocouple wire coats and is fixed therein on the object with insulating gel, the working end of thermocouple wire and two articles surface of contact maintain an equal level, close to each other but do not contact, two thermocouple wires join with another object that constitutes surface of contact and constitute the galvanic circle, and the cold junction of thermocouple wire links to each other with computer data acquisition system or temperature instrumentation by compensating wire.
Thermocouple wire is the thermocouple wire of traditional hot galvanic couple.
When two articles produced relative motion, the cold junction of thermocouple wire linked to each other with data acquisition system (DAS) or temperature instrumentation by slip ring and compensating wire.
For the surface of contact that two articles is formed has required pressure, pressue device can be set in the object outer face.
As long as two contact point place temperature equate that its temperature indication will be consistent with the traditional hot galvanic couple, does not promptly need calibration again with the utility model thermometric,, use the utility model thermometric and will do suitable local conductive processing for the surface of contact that insulating bodies forms.
The utility model can be used for the surface of contact thermometric of following each equipment and occasion: bearing, engine inner wall, aircraft, train, the automotive brake of friction material test machine, antifriction material testing machine, ground dynamic test stand, aircraft, train, automobile and plant equipment.
Compare with traditional thermocouple temperature measuring apparatus, the utlity model has following major advantage:
Because through surface in contact of point for measuring temperature and common idol have little thermal inertia and thermal resistance, therefore no matter the surface is in constant temperature still is the alternating temperature state, can both obtain result accurately and reliably, and the actual measurement of traditional hot galvanic couple is the medial temperature of working end pad, be not the temperature of surface of contact, this also is another reason of its precision and poor reliability.
Method is simple, and thermocouple wire is more economical than the traditional hot galvanic couple, and the former software and hardware that is used for traditional thermocouple temperature measurement in most cases also is applicable to the requirement that the utility model is used.
The energy measuring tool has the surface of contact temperature of relative motion, and this point can't be realized with the traditional hot galvanic couple.
Description of drawings
Fig. 1: the utility model structural representation.
Embodiment:
Below in conjunction with accompanying drawing the utility model is further described.
Embodiment 1: pressue device 8 adopts air pressure or hydraulic pressurization, its effect is that the surface of contact that two articles is formed has required pressure, two thin thermocouple wires 1 that adopt the traditional hot galvanic couple to use, 2, two are passed moving object 6 separately and also cement with insulating gel and object 6, the working end of two thermocouple wires and surface of contact 3 maintain an equal level, two thermocouple wires are tried one's best close each other but are not contacted, two thermocouple wires form the galvanic circle with another object 7 that constitutes surface of contact, a complete thermocouple sensor is formed on thermocouple wire and testee surface jointly in other words, and the cold junction of thermocouple wire links to each other with computer data acquisition system 5 by slip ring 4 and compensating wire.
Embodiment 2: friction material test specimen 7 is formed surface of contact with mating material 6, test specimen 7 links to each other by feather key with the axle that has flying wheel, air pressure pressue device 8 is with the test specimen 7 and antithesis 6 tight crimping of high speed rotating during test, and its surface of contact heats up owing to friction generates heat, the consequent pyroelectric signal of the cold junction of idol is imported data acquisition system (DAS) 5 altogether.
Embodiment 3: thermal diffusivity is important thermal physical property parameter, can obtain by accurate surface measurements temperature, this moment, object 7 was a sample, object 6 is the diplopore porcelain tube, the spring pressue device is arranged to replace 8 on it, a hole of porcelain tube penetrates the nickel filament of Φ 0.1, another hole penetrates the constantan wire of same diameter, two are solidified as a whole with porcelain tube, its end face and porcelain tube support flat, and two can form the galvanic circle by sample when porcelain tube is pressed in the sample right side, and the left side of sample 7 is subjected to the intense pulsed light uniform irradiation during test, its surface temperature is raise rapidly, heat spreads to the right, the right side temperature is risen, and finally reach maximal value, this thermoelectrical potential inserts data acquisition system (DAS) 5 by ejector 4 and carries out data processing, finally obtains thermal diffusivity.For example, when sample is fine copper, records thermal diffusivity with the art of this patent and be about 1.12cm
2/ s, and be about 0.4cm with traditional hot galvanic couple measured value
2/ s, checking in the thermal diffusivity value according to authoritative handbook is 1.18cm
2/ s.
Claims (3)
1. surface of contact temperature measuring equipment, it is characterized in that: comprise two thermocouple wires, thermocouple wire coats and is fixed therein on the object with insulating gel, the working end of thermocouple wire and two articles surface of contact maintain an equal level, close to each other but do not contact, two thermocouple wires link to each other with another object that constitutes surface of contact and constitute the galvanic circle, and the cold junction of thermocouple wire links to each other with computer data acquisition system or temperature instrumentation by compensating wire.
2. temperature measuring equipment according to claim 1 is characterized in that: also comprise slip ring between the cold junction of thermocouple wire and the data acquisition system (DAS).
3. temperature measuring equipment according to claim 1 is characterized in that: in the object outer face pressue device is set.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200620050744.5U CN2938049Y (en) | 2006-04-26 | 2006-04-26 | Cotact surface temp measuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200620050744.5U CN2938049Y (en) | 2006-04-26 | 2006-04-26 | Cotact surface temp measuring device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2938049Y true CN2938049Y (en) | 2007-08-22 |
Family
ID=38362078
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200620050744.5U Expired - Fee Related CN2938049Y (en) | 2006-04-26 | 2006-04-26 | Cotact surface temp measuring device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2938049Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103353466A (en) * | 2013-07-02 | 2013-10-16 | 中国核动力研究设计院 | Measuring method for heat flux density of solid metal |
| CN103837254A (en) * | 2012-11-21 | 2014-06-04 | 上海宝钢工业技术服务有限公司 | Roller heat treatment technology process temperature detection device |
| CN110687159A (en) * | 2019-09-12 | 2020-01-14 | 无锡江南计算技术研究所 | Thermal resistance measuring device and method for thermal grease |
-
2006
- 2006-04-26 CN CN200620050744.5U patent/CN2938049Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103837254A (en) * | 2012-11-21 | 2014-06-04 | 上海宝钢工业技术服务有限公司 | Roller heat treatment technology process temperature detection device |
| CN103353466A (en) * | 2013-07-02 | 2013-10-16 | 中国核动力研究设计院 | Measuring method for heat flux density of solid metal |
| CN110687159A (en) * | 2019-09-12 | 2020-01-14 | 无锡江南计算技术研究所 | Thermal resistance measuring device and method for thermal grease |
| CN110687159B (en) * | 2019-09-12 | 2022-06-10 | 无锡江南计算技术研究所 | Thermal resistance measuring device and method for thermal grease |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20070822 Termination date: 20140426 |