CN201247623Y

CN201247623Y - Compensating conductor for temperature measurement

Info

Publication number: CN201247623Y
Application number: CNU2008200363058U
Authority: CN
Inventors: 吴川中
Original assignee: JIANGSU HUAGUANG CABLE AND ELECTRICAL APPLIANCE CO Ltd
Current assignee: JIANGSU HUAGUANG CABLE AND ELECTRICAL APPLIANCE CO Ltd
Priority date: 2008-05-19
Filing date: 2008-05-19
Publication date: 2009-05-27
Anticipated expiration: 2018-05-19

Abstract

The utility model discloses a temperature-measuring compensating lead which comprises positive wires A (3) and a negative wire B (1). The temperature-measuring compensating lead is characterized in that an insulating layer (2) is arranged outside the single negative wire B (1) or a plurality of negative wires B (1), the positive wires A (3) formed by winding or weaving a plurality of bear leads are arranged outside the insulating layer (2), and an insulating layer (4) is arranged outside the positive wires A (3); a metal shielding layer (5) is arranged outside the insulating layer (4), and a protective sleeve layer (6) is arranged outside the metal shielding layer (5). The utility model has the advantages of good anti-jamming function, high temperature-measuring precision, relatively smaller wire diameter, and the like.

Description

The thermometric compensating wire

Technical field

The utility model relates to a kind of thermometric compensating wire, is specifically related to the extension lead of a kind of thermometric with thermocouple.

Background technology

Thermometric compensating wire described in the utility model is a thermometric with the lead that is connected between thermocouple and the electrical control center.

Existing thermometric is 2 leads of configuration mutually with the lead that is connected between thermocouple and the electrical control center.

Along with the raising of temperature measurement accuracy, require thermometric to have anti-interference function with lead; And for the resource consumption that reduces precious metal with conveniently use on-the-spot wiring, require it to dwindle the line footpath again, solve the deficiency of mechanical properties such as the intensity of its small bore lead is relatively poor simultaneously.And the described lead of existing technology can not satisfy above-mentioned requirement.

Summary of the invention

The utility model aims to provide a kind of function of shielding that has, and the line footpath is less relatively, and the thermometric compensating wire that temperature measurement accuracy is higher to be to satisfy the needs of modern production.

The utility model realizes that its purpose technical scheme is:

A kind of thermometric compensating wire comprises positive wire A and cathode conductor B, and its innovative point is, at single or many cathode conductor B peripheral hardware insulating barriers; At the insulating barrier peripheral hardware by some bare leads by the positive wire A that twines or braiding constitutes, and peripheral hardware insulating barrier; At insulating barrier peripheral hardware metal screen layer; At metal screen layer peripheral hardware restrictive coating.

In technique scheme, because positive wire A adopts some bare thin wires to twine or the mode of braiding, be coated on the appearance of cathode conductor B, thereby constitute the both positive and negative polarity concentric conductor, dwindled the line footpath, saved materials; And also have metal screen layer, thereby make it have anti-interference function, effectively improved temperature measurement accuracy.Realized the purpose of this utility model thus.

The utility model is advocated the described insulating barrier that is located at positive wire A appearance, is the double-layer coextrusion layer of insulation material layer and fire proofing layer.To give the utility model insulation and fire-retardant dual-use function.And can improve the production effect, reduce production costs.

The utility model is also advocated, the sectional area sum of the some bare leads of described formation positive wire A equates with the sectional area of the solid conductor of cathode conductor B or the sectional area sum of multiple conducting wires.To realize the coupling of positive wire and cathode conductor, further improve temperature measurement accuracy of the present utility model.

The utility model is also advocated, described metal screen layer is metal wire knitted or metal tape lapped shielding layer.Described two kinds of screens are that the utility model institute is preferred.But be not limited to this.

The utility model is also advocated, the metal ingredient of described positive wire A and cathode conductor B is respectively copper and copper nickel 0.6, or iron and copper nickel 22, or copper and copper nickel 40, or nickel chromium triangle 10 and nisiloy 3, or iron and copper nickel 18, or nickel chromium triangle 14 and nisiloy, or nisiloy 10 and copper nickel 45, or iron and copper nickel 22, or copper and copper nickel 45.This is preferred according to the regulation institute of the relevant positive and negative pole material of GB GB/T4989-94.But be not limited to this.

After technique scheme was implemented, the utility model was compared with same specification electric wire commonly used, and its total sectional area dwindles about 25%, and line directly reduces about 10%, weight saving about 10%.It had has function of shielding, and the line footpath is less relatively, and characteristics such as temperature measurement accuracy height are self-evident.

Description of drawings

Fig. 1 is the schematic cross-section of a kind of embodiment of the utility model.

Embodiment

Embodiment 1, as shown in Figure 1.

A kind of thermometric compensating wire comprises positive wire A and cathode conductor B, at single or many cathode conductor B1 peripheral hardware insulating barriers 2; At insulating barrier 2 peripheral hardwares by some bare leads by the positive wire A3 that twines or braiding constitutes, and peripheral hardware insulating barrier 4; At insulating barrier 4 peripheral hardware metal screen layers 5; At metal screen layer 5 peripheral hardware restrictive coatings 6.And described insulating barrier 2 is double-layer coextrusion layers of insulation material layer and fire proofing layer.The sectional area sum of the some bare leads of described formation positive wire A3 equates with the sectional area of the solid conductor of cathode conductor B1 or the sectional area sum of multiple conducting wires.Described metal screen layer 5 is metal wire knitted or metal tape lapped shielding layer.And the metal ingredient of described positive wire A3 and cathode conductor B1 is respectively copper and copper nickel 0.6.

Other embodiment: as shown in Figure 1.

A kind of thermometric compensating wire, the metal ingredient of its described positive wire A3 and cathode conductor B1 is iron and copper nickel 22, or copper and copper nickel 40, or nickel chromium triangle and nisiloy 3, or iron and copper nickel 18, or nickel chromium triangle 14 and nisiloy, or nisiloy 10 and copper nickel 45, or iron and copper nickel 22, or copper and copper nickel 45, in addition, other is all as one of embodiment.

Claims

1, a kind of thermometric compensating wire comprises positive wire A and cathode conductor B, it is characterized in that, at single or many cathode conductor B (1) peripheral hardware insulating barriers (2); At insulating barrier (2) peripheral hardware by some bare leads by the positive wire A (3) that twines or braiding constitutes, and peripheral hardware insulating barrier (4); At insulating barrier (4) peripheral hardware metal screen layer (5); At metal screen layer (5) peripheral hardware restrictive coating (6).

2, thermometric compensating wire according to claim 1 is characterized in that, described insulating barrier (2) is the double-layer coextrusion layer of insulation material layer and fire proofing layer.

3, thermometric compensating wire according to claim 1 is characterized in that, the sectional area sum of the some bare leads of described formation positive wire A (3) equates with the sectional area of the solid conductor of cathode conductor B (1) or the sectional area sum of multiple conducting wires.

4, thermometric compensating wire according to claim 1 is characterized in that, described metal screen layer (5) is metal wire knitted or metal tape lapped shielding layer.