CN2435732Y - Armoured thermocouple material - Google Patents
Armoured thermocouple material Download PDFInfo
- Publication number
- CN2435732Y CN2435732Y CN 00241799 CN00241799U CN2435732Y CN 2435732 Y CN2435732 Y CN 2435732Y CN 00241799 CN00241799 CN 00241799 CN 00241799 U CN00241799 U CN 00241799U CN 2435732 Y CN2435732 Y CN 2435732Y
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- wires
- monopole
- filler
- pole silk
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- Measuring Temperature Or Quantity Of Heat (AREA)
Abstract
The utility model discloses armored thermocouple materials used for an ultralow temperature thermocouple, which is provided with column-shaped fillings with magnesia material. At least one hole group is arranged in the fillings along the axial direction. Each hole group is provided with two separated through holes. Nickel-chromium monopole wires, gold iron monopole wires, or pure copper monopole wires, and the gold iron monopole wires which all form thermocouple wires are respectively in each group of corresponding through holes. A metal sleeve barrel is arranged on the outside of the fillings. The monopole wires, the through holes, the fillings, and the metal sleeve barrel are tightly matched. The surface of each monopole wire is provided with a protective layer. Consequently, erosion which is caused by the magnesia fillings to gold iron wires is overcome. Damage to the surfaces of the gold and iron monopole wires in the course of armored formation is conspicuously reduced.
Description
The utility model relates to a kind of armoured thermocouple material that temperature thermocouple is used.
The Shanghai science and technology is published " electrical material commonly used " the 1165th page of structure of having introduced the armoured thermocouple material that Du's in October, 1988 first published is published, this armoured thermocouple material, insulate with magnesium hydroxide filler between the one pole silk of its thermopair, pack in the metal sleeve, make solid subassembly through the drawing undergauge.According to request for utilization, the external diameter of this subassembly is φ 8 to φ 0.25mm, and length can reach tens meters, but free bend, the armoured thermocouple of making is not subjected to erosion medium resistance, and withstand voltage height is shock-resistant, vibration resistance, the temperature-sensitive sensitivity can be installed to complicated thermometric position, thereby be used widely.
Yet,, be difficult to realize the measuring armoured thermocouple material of ultralow temperature according to said structure.Because the thermocouple wire that the ultralow temperature that can adapt to-270 °～0 ℃ is measured is generally nickel chromium triangle-Jin iron wire or copper-Jin iron wire, the chemical constitution of gold iron wire is Au+ atomic percent 0.07Fe, is subject to the magnesian erosion of heat conduction good insulation performance filler and changes its thermoelectricity capability.The line footpath of golden iron wire of while is 0.2mm only, when the thermocouple material armouring, and the magnesium hydroxide filler generation deformation in the metal sleeve, extruding force, friction force that deformation produces act on the relatively poor golden iron wire surface of mechanical property, can cause the wearing and tearing on golden iron wire surface, plucking, even the fracture and scrap.
For this reason, the purpose of this utility model provides a kind of ultralow temperature that is used for and measures the armoured thermocouple material that thermopair is used, and it can overcome the erosion of magnesium hydroxide filler to golden iron wire, alleviates or eliminates in the armouring shaping mechanical wounding to golden iron wire.
The utility model is to realize like this; the armoured thermocouple material that is provided; cylindricality filler with magnesium oxide material; has one group of hole at least along its axis direction in the filler; there is two branches through hole at a certain distance in every group of hole; in two through holes of every group of hole group, be installed with nickel chromium triangle one pole silk, golden iron one pole silk or the fine copper one pole silk, the golden iron one pole silk that constitute thermocouple wire respectively; outside described filler, be with metal sleeve; reaching between described filler and the metal sleeve between described one pole silk and the through hole is wringing fit, matcoveredn on the described every one pole silk outside surface.
Described protective seam is the plastics cladding.
Described protective seam also can be the double-decker of enamel-cover layer and plastics cladding.
Armoured thermocouple material of the present utility model; because matcoveredn on the one pole silk surface of formation thermocouple wire; to bring following three benefits: first protective seam makes that magnesium oxide material is spaced in golden iron one pole silk and the filler, has avoided the erosion pollution of magnesium oxide material to golden iron one pole silk surface.It two is after having added protective seam, to make thermocouple wire, and the rigidity and the fastness of particularly golden iron one pole silk are improved, and avoids because of careless manipulation damage thermocouple wire; During manufacturing, also be convenient to golden iron one pole silk is through in the through hole of filler, and do not damage the metal surface of one pole silk.It three is when armouring; filler generation deformation in the metal sleeve; the friction to thermocouple wire that deformation produced, extruding force protected seam cushion and decay, thus can significantly reduce armouring the time to thermocouple wire, especially to the mechanical damage of golden iron one pole silk metal surface.
In sum, the utility model provides the ultralow temperature armoured thermocouple of being convenient to implement material.
Below in conjunction with drawings and embodiments the utility model is described in further detail.
Fig. 1 is the structural representation of the utility model armoured thermocouple material.
Fig. 2 be Fig. 1 along A-A to cut-open view.
As shown in Figure 1, the armoured thermocouple material has a metal sleeve 1, the cylindricality filler 2 that useful magnesium oxide material is fired in the sleeve pipe, its axis direction of end face upper edge of filler has a hole group, this hole group has the through hole 5 of two spaced-apart certain distances, 8, in these two through holes 5,8, be installed with the nickel chromium triangle one pole silk 3 and the Jin Tie one pole silk 6 that constitute a pair of thermocouple wire respectively.The chemical constitution of nickel chromium triangle one pole silk is: 10% Cr, and all the other are Ni; The chemistry of gold iron one pole silk becomes branch Au+ atomic percent 0.07Fe.A protective seam 4 is respectively arranged on the metal surface of nickel chromium triangle one pole silk 3 and Jin Tie one pole silk 6; 7; this protective seam is the plastics cladding; adopt polytetrafluoroethylmaterial material; perhaps for coating with lacquer the double-decker of chromatograph and plastics cladding; so that make the metal surface of thermocouple wire and magnesium oxide material spaced-apart, avoid the corrosional drift of thermo emf of magnesium oxide to golden iron one pole silk.Between the nickel chromium triangle one pole silk 3 of described band protective seam 4 and the through hole 5 of filler 2, between the through hole 8 of the golden iron one pole silk 6 of described band protective seam 7 and filler 2 and be wringing fit between filler 2 outside surfaces and sleeve pipe 1 inside surface, thereby constituted the armouring galvanic couple material that ultralow temperature measurement thermopair is used.
During manufacturing; the golden iron one pole silk 6 that will have the nickel chromium triangle one pole silk 3 of protective seam earlier and have a protective seam is through the through hole 5 of cylindricality filler 2 respectively; in 8; outside filler 2, put metal sleeve 1 then; insert in the mould of drawing machine; carry out the drawing undergauge; casing inner diameter is reduced; make the cylindricality filler generation deformation in the sleeve pipe 1; be that cylindricality filler pressurized is pulverized powder displacement, its internal pore of filling; and be compacted shaping, make sleeve pipe, filler and thermocouple wire three become the solid subassembly that is closely linked.Because there is the protection of plastics cladding the metal surface of thermocouple wire, in drawing diameter reducing process process, can alleviate the filler grain after pressurized is pulverized extruding, move and cause to the thermocouple wire metal surface damage of especially golden iron one pole silk metal surface.
Certainly, also available fine copper one pole silk replaces the nickel chromium triangle one pole silk of upside to implement the armoured thermocouple material that ultralow temperature measurement thermopair is used, and its structure is fully identical with last example.
Two hole groups (not shown) also can be arranged in the above-mentioned filler; each Kong Zuzhong has two through holes that divide mutually at a certain distance; nickel chromium triangle one pole silk, golden iron one pole silk or the fine copper one pole silk, the golden iron one pole silk that constitute one group of thermocouple wire are arranged respectively in two through holes of each hole group; each one pole silk surface matcoveredn; this protective seam is the polytetrafluoroethylplastic plastic cladding, perhaps the double-decker of enamel-cover+polytetrafluoroethylplastic plastic cladding.This armoured thermocouple material that comprises two groups of thermocouple wires, the temperature thermocouple that it is made can reduce temperature measurement error, improves measuring accuracy.
Three groups of hole groups can also be arranged in above-mentioned filler, adorn three groups of identical thermocouple wires, to reach the purpose that crucial point for measuring temperature precision is compared and controls.
Can make-270 ℃～0 ℃ ultralow temperature temperature thermocouple with above-mentioned armoured thermocouple material, be widely used in Launch Vehicle Engine fuel, as the temperature survey of liquid hydrogen, liquid oxygen, liquid nitrogen, and other physical study department relevant with low temperature, as the temperature survey of low temperature superconducting material research.
Claims (4)
1. armoured thermocouple material; cylindricality filler with magnesium oxide material; has one group of hole group at least along its axis direction in the filler; every group of hole group has two branches through hole at a certain distance; nickel chromium triangle one pole silk, golden iron one pole silk or the fine copper one pole silk, the golden iron one pole silk that constitute a pair of thermocouple wire are arranged respectively in two through holes of every group of hole group; outside described filler, metal sleeve is arranged; reaching between described filler outside surface and the metal sleeve between described one pole silk and the through hole is wringing fit, matcoveredn on the described every one pole silk outside surface.
2. armoured thermocouple material according to claim 1 is characterized in that described protective seam is the plastics cladding.
3. armoured thermocouple material according to claim 1 is characterized in that described protective seam is the double-decker of enamel-cover layer and plastics cladding.
4. according to the described armoured thermocouple material of arbitrary claim in the claim 2 to 3, it is characterized in that the plastics cladding adopts polytetrafluoroethylplastic plastic.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00241799 CN2435732Y (en) | 2000-07-18 | 2000-07-18 | Armoured thermocouple material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00241799 CN2435732Y (en) | 2000-07-18 | 2000-07-18 | Armoured thermocouple material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2435732Y true CN2435732Y (en) | 2001-06-20 |
Family
ID=33602142
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 00241799 Expired - Fee Related CN2435732Y (en) | 2000-07-18 | 2000-07-18 | Armoured thermocouple material |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2435732Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103180703A (en) * | 2010-09-07 | 2013-06-26 | 斯通瑞智公司 | Temperature sensor |
-
2000
- 2000-07-18 CN CN 00241799 patent/CN2435732Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103180703A (en) * | 2010-09-07 | 2013-06-26 | 斯通瑞智公司 | Temperature sensor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |