CN203443680U - Thermocouple structure - Google Patents
Thermocouple structure Download PDFInfo
- Publication number
- CN203443680U CN203443680U CN201320411858.8U CN201320411858U CN203443680U CN 203443680 U CN203443680 U CN 203443680U CN 201320411858 U CN201320411858 U CN 201320411858U CN 203443680 U CN203443680 U CN 203443680U
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- Prior art keywords
- thermocouple
- layer
- inner sheath
- sealant
- oversheath
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- Expired - Fee Related
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Abstract
The utility model discloses a thermocouple structure. The thermocouple structure includes a temperature measurement end and a display end, the temperature measurement end is composed of a thermocouple wire and a protective tube sleeved on the thermocouple wire, the protective tube is composed of a corundum core, an inner sheath and an outer sheath, a filling layer is disposed between the inner sheath and the outer sheath, a sealing layer is disposed at the top of the filling layer, and a thermal insulation layer is disposed between the filling layer and the sealing layer. The thermocouple has advantages of comparative high compression strength, good sealing performance and long service life.
Description
Technical field
The utility model relates to the thermometric operation technique field under the conditions of high temperature such as metallurgy, machinery, thermal treatment, relates in particular to a kind of thermopair.
Background technology
Thermopair is temperature element conventional in temperature measuring instrument, by two different metals silks, is linked together, and the different principle of electromotive force of utilizing different metal to produce is made.Thermopair is precise temperature measurement instrument, and in the serviceable life of the meeting shortening heat galvanic couple of at high temperature working for a long time, in order to prevent from damaging thermopair, can there be protecting tube general thermopair outside by cover, and the material of protecting tube is generally aluminium oxide or corundum etc.During some equipment operation, in high pressure or low-pressure state, if protecting tube damages gas leakage, will make equipment internal pressure unstable, equipment and product are impacted.Protecting tube is easily damaged, need often change, and belongs to easily-consumed products; and price; the quality of protecting tube is also directly connected to the measuring accuracy of thermopair simultaneously, even if protecting tube has small damage also must change, this has just caused unnecessary waste.Protecting tube is used in high pressure or low-voltage equipment is outer, easily gas leakage after it is damaged, and there is no thermofin, excess Temperature can affect the effect of protecting tube end seal layer.
Summary of the invention
The purpose of this utility model is to overcome above-mentioned deficiency, and a kind of anti-pressure ability that has is provided, good seal performance, the thermocouple structure of long service life.
The utility model is achieved by the following technical solution: a kind of thermocouple structure; comprise thermometric end and display end; described thermometric end consists of thermocouple wire and the protection tube being enclosed within on thermocouple wire; described protection tube is comprised of corundum core, inner sheath, oversheath; between described inner sheath and oversheath, be provided with packed layer; the top of described packed layer is provided with sealant, between described packed layer and sealant, is provided with thermofin.
Described inner sheath adopts alumina material to make, and oversheath adopts heat-resisting steel to make.
Described packed layer is silicon carbide powder layer, and sealant is solid glue-line, and thermofin is asbestos layer.
The utility model compared with prior art has following beneficial effect:
Protection tube of the present utility model adopts Multi-layer design to improve anti-pressure ability, and between interior oversheath, fill resistant to elevated temperatures dusty material and with solid gum sealing, can play double protection, even if protection tube is outer, damage, can not cause equipment gas leakage, the safe operation of double shield equipment yet; In addition, between filler layer and sealant, thermofin is set, even if filler layer excess Temperature also can guarantee the stability of solid gum sealant, more protection effect, in the serviceable life of improving thermopair, saves manufacturing cost.
Accompanying drawing explanation
Fig. 1 is the structural representation of the utility model embodiment.
Sequence number in figure: 1, corundum core, 2, inner sheath, 3, oversheath, 4, packed layer, 5, sealant, 6, thermofin, 7, display end.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.
Shown in Fig. 1, a kind of thermocouple structure of the utility model, comprise thermometric end and display end 7, described thermometric end consists of thermocouple wire and the protection tube being enclosed within on thermocouple wire, described protection tube is comprised of corundum core 1, inner sheath 2, oversheath 3, between described inner sheath 2 and oversheath 3, be provided with packed layer 4, the top of described packed layer 4 is provided with sealant 5, between described packed layer 4 and sealant 5, is provided with thermofin 6; Described inner sheath 2 adopts alumina material to make, and oversheath 3 adopts heat-resisting steel to make, and described packed layer 4 is silicon carbide powder layer, and sealant 5 is solid glue-line, and thermofin 6 is asbestos layer.
Embodiment is just for the ease of understanding the technical solution of the utility model; do not form the restriction to the utility model protection domain; every interior any simple modification, equivalent variations and modification of perhaps according to technical spirit of the present utility model, above scheme being done that does not depart from technical solutions of the utility model, within all still belonging to the utility model protection domain.
Claims (3)
1. a thermocouple structure; comprise thermometric end and display end (7); described thermometric end consists of thermocouple wire and the protection tube being enclosed within on thermocouple wire; it is characterized in that: described protection tube is comprised of corundum core (1), inner sheath (2), oversheath (3); between described inner sheath (2) and oversheath (3), be provided with packed layer (4); the top of described packed layer (4) is provided with sealant (5), between described packed layer (4) and sealant (5), is provided with thermofin (6).
2. a kind of thermocouple structure according to claim 1, is characterized in that: described inner sheath (2) adopts alumina material to make, and oversheath (3) adopts heat-resisting steel to make.
3. a kind of thermocouple structure according to claim 1 and 2, is characterized in that: described packed layer (4) is silicon carbide powder layer, and sealant (5) is solid glue-line, and thermofin (6) is asbestos layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320411858.8U CN203443680U (en) | 2013-07-11 | 2013-07-11 | Thermocouple structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320411858.8U CN203443680U (en) | 2013-07-11 | 2013-07-11 | Thermocouple structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203443680U true CN203443680U (en) | 2014-02-19 |
Family
ID=50094718
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320411858.8U Expired - Fee Related CN203443680U (en) | 2013-07-11 | 2013-07-11 | Thermocouple structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203443680U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104458041A (en) * | 2014-11-27 | 2015-03-25 | 中国科学院上海硅酸盐研究所 | Ampoule for testing temperature field of hearth |
| CN106989838A (en) * | 2017-05-22 | 2017-07-28 | 天津市中环温度仪表有限公司 | The double branch multipoint thermocouple core bodys of one kind synthesis |
-
2013
- 2013-07-11 CN CN201320411858.8U patent/CN203443680U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104458041A (en) * | 2014-11-27 | 2015-03-25 | 中国科学院上海硅酸盐研究所 | Ampoule for testing temperature field of hearth |
| CN106989838A (en) * | 2017-05-22 | 2017-07-28 | 天津市中环温度仪表有限公司 | The double branch multipoint thermocouple core bodys of one kind synthesis |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140219 Termination date: 20180711 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |