CN203721283U

CN203721283U - Compensating cable dedicated for low temperature resistant thermocouple

Info

Publication number: CN203721283U
Application number: CN201420081996.9U
Authority: CN
Inventors: 付世财
Original assignee: Anhui Jianghuai Cable Group Co Ltd
Current assignee: Anhui Jianghuai Cable Group Co Ltd
Priority date: 2014-02-26
Filing date: 2014-02-26
Publication date: 2014-07-16
Anticipated expiration: 2024-02-26

Abstract

The utility model discloses a compensating cable dedicated for a low temperature resistant thermocouple. The compensating cable comprises two or more cable cores, compensating wire cores, a ceramic fluororubber outer sheath, a copper-clad steel armor layer, a flame retardant mica tape and a tin plating wire braided shielding layer. Each cable core is formed by extruding a silica ceramic insulating layer onto a nickel chromium-nickel silicon alloy conductor; each compensating wire core is formed by extruding a heating element into a heat conducting sheath; the tin plating wire braided shielding layer horizontally extrudes the two or more cable cores; each compensating core wire is disposed in a vertical gap between each two adjacent cable cores; and the copper-clad steel armor layer, the flame retardant mica tape and the ceramic fluororubber outer sheath are extruded sequentially from inside to outside onto the tin plating wire braided shielding layer. According to the utility model, the temperature loss of the cable is compensated through the compensating wire cores so that a product can operate normally for a long time in an environment with a temperature from 80 to 500 DEG C; and the compensating cable dedicated for the low temperature resistant thermocouple has good flame and radiation resistance performance, thereby reducing cracking phenomena due to temperature shocks, maintaining a stable signal and extending the service life.

Description

The special compensating cable of a kind of low temperature resistant thermocouple

Technical field

The utility model relates to cable, relates in particular to the special compensating cable of a kind of low temperature resistant thermocouple.

Background technology

Up to now, the special compensating cable of a kind of low temperature resistant thermocouple is widely used in the fields such as metallurgy, casting, oil refining, chemical industry, machinery, especially in the adverse circumstances of low temperature, the conventional cable of the signal transmssion line of electrical instrumentation and automation control system is usually because temperature is too low, cause cable easily damaged under low-temperature impact, signal transmission is influenced, causes instrument system at low temperature and emergency circumstances cisco unity malfunction, has caused huge loss.

Utility model content

According to above-mentioned situation, the utility model object is to provide the special compensating cable of a kind of low temperature resistant thermocouple.

Scheme of the present utility model is as follows: the special compensating cable of a kind of low temperature resistant thermocouple, comprise two or many cable cores, compensation core, ceramic fluorubber oversheath, copper covered steel armour, fire-retardant mica tape and tin plated wire woven shields, described cable core is to be extruded on nickel chromium triangle-nickel silicon alloy conductor and to be formed by SiO 2-ceramic insulating barrier; Described compensation core is to extrude heater by heat conduction sheath to form; Described tin plated wire woven shield extrudes two or many cable core levels; Between every two adjacent cable cores, upper and lower gap location arranges a compensation core; Described copper covered steel armour, fire-retardant mica tape and ceramic fluorubber oversheath are from inside to outside extruded on tin plated wire woven shield successively.

The beneficial effects of the utility model: the utility model is by the temperature loss of compensation core compensating cable, product can normally be moved for a long time in the environment of-80 DEG C to 500 DEG C, and there is good anti-flammability, radiation resistance, reduce the cracking phenomena that temperature shock causes, inhibit signal is unimpeded, has greatly extended the life-span.

Brief description of the drawings

Fig. 1 is structural representation of the present utility model;

Wherein: 1, ceramic fluorubber oversheath; 2, copper covered steel armour; 3, fire-retardant mica tape; 4, tin plated wire woven shield; 5, nickel chromium triangle-nickel silicon alloy conductor; 6, SiO 2-ceramic insulating barrier; 7, heater; 8, heat conduction sheath.

Embodiment

Below in conjunction with accompanying drawing, the utility model is described further;

As shown in Figure 1, the special compensating cable of a kind of low temperature resistant thermocouple, comprise two or many cable cores, compensation core, ceramic fluorubber oversheath 1, copper covered steel armour 2, fire-retardant mica tape 3 and tin plated wire woven shields 4, described cable core is to be extruded on nickel chromium triangle-nickel silicon alloy conductor 5 and to be formed by SiO 2-ceramic insulating barrier 6; Described compensation core is to extrude heater 7 by heat conduction sheath 8 to form; Described tin plated wire woven shield 4 extrudes two or many cable core levels; Between every two adjacent cable cores, upper and lower gap location arranges a compensation core; Described copper covered steel armour 2, fire-retardant mica tape 3 and ceramic fluorubber oversheath 1 are from inside to outside extruded on tin plated wire woven shield 4 successively.

Although above embodiment of the present utility model has been given to describe in detail and explanation; but what should indicate is; we can carry out various equivalences to above-mentioned execution mode according to conception of the present utility model and change and amendment; when its function producing does not exceed spiritual that specification contains yet, all should be within protection range of the present utility model.

Claims

1. the special compensating cable of low temperature resistant thermocouple, comprise two or many cable cores, compensation core, ceramic fluorubber oversheath, copper covered steel armour, fire-retardant mica tape and tin plated wire woven shields, it is characterized in that: described cable core is to be extruded on nickel chromium triangle-nickel silicon alloy conductor and to be formed by SiO 2-ceramic insulating barrier; Described compensation core is to extrude heater by heat conduction sheath to form; Described tin plated wire woven shield extrudes two or many cable core levels; Between every two adjacent cable cores, upper and lower gap location arranges a compensation core; Described copper covered steel armour, fire-retardant mica tape and ceramic fluorubber oversheath are from inside to outside extruded on tin plated wire woven shield successively.