CN204188286U - A kind of thermopair thermo wires and thermopair - Google Patents
A kind of thermopair thermo wires and thermopair Download PDFInfo
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- CN204188286U CN204188286U CN201420514486.6U CN201420514486U CN204188286U CN 204188286 U CN204188286 U CN 204188286U CN 201420514486 U CN201420514486 U CN 201420514486U CN 204188286 U CN204188286 U CN 204188286U
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Abstract
The utility model relates to a kind of thermopair thermo wires and comprises thermo wires body, thermo wires body comprises reducing thermo wires, excessively thermo wires and normal footpath thermo wires, described reducing thermo wires diameter is greater than normal footpath thermo wires diameter, described normal footpath thermo wires is two, increase the diameter of thermocouple temperature measurement end thermo wires, the change of thermocouple temperature measurement end thermo wires diameter does not affect the accuracy of thermometric, which increases the anti-fusing of thermometric end thermo wires and oxidation resistant ability, obviously extends the life-span of thermopair.
Description
Technical field
The utility model relates to thermometric tinsel, especially a kind of thermopair thermo wires.
Background technology
Electronics, electrically production industry and high temperature stove device all employ a large amount of thermopairs for thermometric, because the working temperature of thermopair is very high, require it is also higher to the job stability of thermopair, thermopair operation irregularity directly causes product defect rate to improve, and even production line stops production.For S type thermopair thermo wires use noble metal expensive, the life-span is short, the thermo wires of thermometric end is easy to be fused, thermopair is caused directly to be scrapped, the thermopair more renewed, the high production cost that causes of replacement frequency increases, and causes enterprise cost to waste, and increases maintenance and the replacement cost of user, have a strong impact on product quality, bring inconvenience to commercial production.
Utility model content
Technical problem to be solved in the utility model is to provide a kind of thermopair thermo wires increased the service life;
The utility model additionally provides the thermopair adopting above-mentioned thermo wires to make.
For solving the problems of the technologies described above, the technical scheme that the utility model thermo wires adopts is as follows:
A kind of thermopair thermo wires, comprise reducing thermo wires, excessively thermo wires and normal footpath thermo wires, described reducing thermo wires diameter is greater than normal footpath thermo wires diameter, described normal footpath thermo wires is two, two described normal footpath thermo wires are connected with described reducing thermo wires two ends respectively by two excessive thermo wires, and described excessive thermo wires is taper type, and described normal footpath thermo wires diameter is: 0.3mm-0.45mm, described reducing thermo wires diameter is: 0.46mm-1mm, and described reducing thermo wires length is 50mm-200mm.
Furtherly, described reducing thermo wires diameter is: 0.5mm-0.8mm.
Furtherly, described reducing thermo wires diameter is: 0.55mm-0.6mm.
Furtherly, described reducing thermo wires diameter is: 0.57mm.
Furtherly, described reducing thermo wires length is 70mm-160mm.
Furtherly, described reducing thermo wires length is 85mm-120mm.
Furtherly, described reducing thermo wires length is 100mm.
Furtherly, described normal footpath thermo wires diameter is: 0.35mm-0.43mm.
Furtherly, described normal footpath thermo wires diameter is: 0.42mm.
The technical scheme that thermopair adopts is as follows: the thermopair that a kind of thermopair thermo wires is made, and comprising thermocouple well body, thermo wires, being arranged on for placing the thermo wires hole of thermo wires in body, two normal footpath thermo wires of described thermo wires are plugged on body through thermo wires hole.
Good effect of the present utility model is as follows:
Increase the diameter of thermocouple temperature measurement end thermo wires, the change of thermocouple temperature measurement end thermo wires diameter does not affect the accuracy of thermometric, which increases the anti-fusing of thermometric end thermo wires and oxidation resistant ability, obviously extends the life-span of thermopair.
Adopt this thermopair thermo wires optimum diameter and optimum length can reduce unnecessary waste, avoid increasing blindly thick and lengthen; After the reliability of thermopair increases thereupon, reduce replacement frequency and reduce enterprise's maintenance cost, the reduction of thermopair failure rate also improves enterprises production efficiency; And the thermo wires of the technical program proposition optimum increases the length thick with increasing of the diameter slightly, the working time that improve thermocouple wire and work efficiency as far as possible, optimal proportion is found between raising performance and increase cost, also enhance the life cycle of thermocouple wire simultaneously, decrease the replacement frequency of thermocouple wire, decrease user's maintenance and replacement cost.
Accompanying drawing explanation
Fig. 1 the utility model thermo wires structural representation;
Fig. 2 the utility model is applied to thermocouple structure schematic diagram;
In the accompanying drawings: 1 reducing thermo wires, 2 excessive thermo wires, 3 normal footpath thermo wires, 4 bodys, 5 thermo wires holes.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is elaborated.
As shown in accompanying drawing 1 ~ 2, the utility model comprises: thermo wires body, thermo wires body comprises reducing thermo wires 1, excessively thermo wires 2 and normal footpath thermo wires 3, described reducing thermo wires 1 diameter is greater than normal footpath thermo wires 3 diameter, described normal footpath thermo wires 3 is two, two described normal footpath thermo wires 3 are connected with described reducing thermo wires 1 two ends respectively by two excessive thermo wires 2, described excessive thermo wires 2 is taper types, described normal footpath thermo wires 3 diameter is: 0.3mm-0.45mm, described reducing thermo wires 1 diameter is: 0.46mm-1mm, and described reducing thermo wires 1 length is 50mm-200mm.
Using thermopair of the present utility model, comprise thermocouple well body 4, being arranged on for placing the thermo wires hole 5 of thermo wires in body 4, described two normal footpath thermo wires 3 are plugged on body 4 through thermo wires hole 5.
Reducing thermo wires diameter is utilized to be greater than normal footpath thermo wires diameter, determine the optimum value 0.57mm of reducing thermo wires diameter, the best 0.42mm of normal footpath thermo wires diameter, also determine the optimum length 100mm of reducing thermo wires simultaneously, increase heating end diameter, reduce the fusing phenomenon of thermo wires, extend the serviceable life of thermopair.
Embodiment one
As shown in accompanying drawing 1 ~ 2, for S type thermo wires normal footpath thermo wires diameter be: 0.42mm, reducing thermo wires diameter is: 0.57mm, reducing thermo wires length is 100mm, when producing assembling thermopair, two excessive thermo wires 2 alignment are made reducing thermo wires 1 doubling, two normal footpath thermo wires 3 overlap, again two normal footpath thermo wires 3 are each passed through two thermo wires holes 5 on body 4, thermo wires after doubling has body 4 one end to penetrate, passed by the other end, thermo wires two thermo wires when going out thermo wires hole 5 are set with two insulation sleeves, avoid two thermo wires short circuits.Usually the thermo wires passing thermo wires hole 5 is normal footpath thermo wires 3, and thermo wires pipe body 4 one end at the bending part place after reducing thermo wires 1 doubling is thermometric end, and this end realizes temp sensing function.
When thermo wires hole is four, two normal footpath thermo wires 3 are each passed through two adjacent thermo wires holes 5, remaining two thermo wires holes 5 can be idle, also can install another root thermo wires, two identical thermo wires can be installed in the thermo wires pipe in four thermo wires holes, also can install different thermo wires.
The thermo wires of thermopair is thermometric end at the connecting portion of bending, and also cry working end, the other end is free end; Reducing thermo wires 1 is welded to form by two kinds of different metals, and two groups of excessive thermo wires 2 at reducing thermo wires 1 two ends and the material of normal footpath thermo wires 3 material of holding that is connected with reducing thermo wires 1 is identical.
For (S type) thermo wires material in follow-up working practice, the optimum length of reducing thermo wires is 100mm, reducing thermo wires diameter is 0.57mm, normal footpath thermo wires diameter is 0.42mm, in time, is detected to national indication department when using 5 years continuously, indices still meets national standard, and common thermocouple serviceable life was at 0.5 year-1 year.
Because whole thermo wires presents the large reducing thermo wires 1 of diameter and the little normal footpath thermo wires 3 of two diameters, the excessive thermo wires 2 of transition portion is just had at reducing thermo wires 1 with two positions be connected of normal footpath thermo wires 3 like this with regard to sample, it is taper type that excessive thermo wires 2 is taken out separately, large face is connected with reducing thermo wires 1, little face is connected with normal footpath thermo wires 3, the position of such thermo wires diameter change just defines good transition, when producing, thermo wires is one-body molded, and the position that the excessive thermo wires of transitional region 2 that thermo wires diameter changes is connected with reducing thermo wires 1 and normal footpath thermo wires 3 is smoother.
Reducing district is the working end that temperature is higher, Chang Jing district is the free end that temperature is lower, under general Chang Jing district is in certain stationary temperature, normal footpath thermo wires can reasonably apart from interior about optimum value 0.57mm diameter being increased to reducing thermo wires before reducing district, the length and the thick diameter of increasing that increase thick reducing thermo wires 1 are determined by the actual working environment of thermopair, and the diameter of same model working temperature higher reducing thermo wires 1 is larger and length is longer.
During thermocouple temperature measurement, after utilizing reducing thermo wires to record thermopower, the temperature of measured medium can be learnt.
Embodiment two
Be with embodiment difference, footpath thermo wires diameter is: 0.42mm, and reducing thermo wires 1 diameter is: 0.6mm, and reducing thermo wires 1 length is 120mm.
Embodiment three
Be with embodiment difference, footpath thermo wires diameter is: 0.42mm, and reducing thermo wires 1 diameter is: 0.55mm, and reducing thermo wires 1 length is 85mm.
Embodiment four
Be with embodiment difference, footpath thermo wires diameter is: 0.42mm, and reducing thermo wires 1 diameter is: 0.5mm, and reducing thermo wires 1 length is 160mm.
It should be noted that, diameter due to thermo wires does not affect the thermometric effect of thermopair, in national standard and industry, concrete regulation be there is no to the diameter of thermo wires, when producing because thermo wires is comparatively thin and long, therefore the diameter of thermo wires adds in one of percentage millimeter precision and has error man-hour, and therefore through a large amount of practice, the technical program show that the optimum diameter of reducing thermo wires 1 is 0.57mm.
It should be noted that reducing thermo wires 1 is the conductor composition of two kinds of heterogeneity materials, S type thermopair thermo wires one end is platinum-rhodium alloy, the other end is that pure platinum is welded, the position of reducing thermo wires 1 doubling is the position of two kinds of unlike material welding, said is above all the general knowledge of this area, and be also the basic theoretical knowledge of thermocouple temperature measurement, reducing thermo wires 1 of the present utility model first carries out soldering formation, doubling is by solder joint doubling when installing, and solder joint is in the middle part of reducing thermo wires 1.
Above embodiment only in order to the technical solution of the utility model to be described, is not intended to limit; Although be described in detail the utility model with reference to previous embodiment, those of ordinary skill in the art is to be understood that: it still can be modified to the technical scheme described in previous embodiment, or carries out equivalent replacement to wherein portion of techniques feature; And these amendments or replacement, do not make the essence of appropriate technical solution depart from the spirit and scope of the utility model embodiment technical scheme.
Claims (10)
1. a thermopair thermo wires, it is characterized in that: it comprises reducing thermo wires (1), excessive thermo wires (2) and normal footpath thermo wires (3), described reducing thermo wires (1) diameter is greater than normal footpath thermo wires (3) diameter, described normal footpath thermo wires (3) is two, two described normal footpaths thermo wires (3) are connected with described reducing thermo wires (1) two ends respectively by two excessive thermo wires (2), described excessive thermo wires (2) is taper type, described normal footpath thermo wires (3) diameter is: 0.3mm-0.45mm, described reducing thermo wires (1) diameter is: 0.46mm-1mm, described reducing thermo wires (1) length is 50mm-200mm.
2. a kind of thermopair thermo wires according to claim 1, is characterized in that: described reducing thermo wires (1) diameter is: 0.5mm-0.8mm.
3. a kind of thermopair thermo wires according to claim 2, is characterized in that: described reducing thermo wires (1) diameter is: 0.55mm-0.6mm.
4. a kind of thermopair thermo wires according to claim 3, is characterized in that: described reducing thermo wires (1) diameter is: 0.57mm.
5. a kind of thermopair thermo wires according to claim 1, is characterized in that: described reducing thermo wires (1) length is 70mm-160mm.
6. a kind of thermopair thermo wires according to claim 5, is characterized in that: described reducing thermo wires (1) length is 85mm-120mm.
7. a kind of thermopair thermo wires according to claim 6, is characterized in that: described reducing thermo wires (1) length is 100mm.
8. a kind of thermopair thermo wires according to claim 1, is characterized in that: described normal footpath thermo wires (3) diameter is: 0.35mm-0.43mm.
9. a kind of thermopair thermo wires according to claim 8, is characterized in that: described normal footpath thermo wires (3) diameter is: 0.42mm.
10. adopt the thermopair that any one of claim 1-9 thermo wires is made, it is characterized in that: it comprises thermocouple well body (4), thermo wires, be arranged on body (4) in for placing the thermo wires hole (5) of thermo wires, two normal footpaths thermo wires (3) of described thermo wires are plugged on body (4) through thermo wires hole (5).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420514486.6U CN204188286U (en) | 2014-09-09 | 2014-09-09 | A kind of thermopair thermo wires and thermopair |
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| CN201420514486.6U CN204188286U (en) | 2014-09-09 | 2014-09-09 | A kind of thermopair thermo wires and thermopair |
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| CN204188286U true CN204188286U (en) | 2015-03-04 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106052892A (en) * | 2016-08-02 | 2016-10-26 | 中国航空工业集团公司沈阳发动机设计研究所 | Thermocouple |
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2014
- 2014-09-09 CN CN201420514486.6U patent/CN204188286U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106052892A (en) * | 2016-08-02 | 2016-10-26 | 中国航空工业集团公司沈阳发动机设计研究所 | Thermocouple |
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