CN218957442U

CN218957442U - Fire-resistant compensation wire for thermocouple

Info

Publication number: CN218957442U
Application number: CN202223368150.7U
Authority: CN
Inventors: 陶玲天
Original assignee: Anhui Shangziyi Regulator Equipment Co ltd
Current assignee: Anhui Shangziyi Regulator Equipment Co ltd
Priority date: 2022-12-14
Filing date: 2022-12-14
Publication date: 2023-05-02
Anticipated expiration: 2032-12-14

Abstract

The utility model belongs to the technical field of compensation wire equipment, and particularly relates to a fire-resistant compensation wire for a thermocouple. According to the utility model, the high-purity magnesium oxide insulating layer and the refractory layer formed by 304 stainless steel are arranged on the surfaces of the positive electrode conductor and the negative electrode conductor, so that the wire has good refractory performance, meanwhile, the tensile core and the tensile net are arranged on the outer side of the refractory layer, the corrosion-resistant layer formed by magnesium oxide and the sheath layer formed by cold drawing of the 304 stainless steel pipe are arranged on the periphery of the tensile net, and the wire has good tensile and compression-resistant effects and corrosion-resistant effects in the use process, so that the practicability of the wire is greatly improved.

Description

Fire-resistant compensation wire for thermocouple

Technical Field

The utility model relates to the technical field of compensation wire equipment, in particular to a fire-resistant compensation wire for a thermocouple.

Background

The cable is used for transmitting electric (magnetic) energy, information and wire products for electromagnetic energy conversion. Typically a rope-like cable formed by twisting at least two wires of each of several groups of wires, each group being insulated from each other and often twisted around a center, the whole being covered with a highly insulating coating. The compensating wire is a pair of insulating wires with the same nominal value as the thermoelectromotive force of the matched thermocouple in a certain temperature range (including normal temperature 0), and the thermocouple and the measuring device are connected by the insulating wires so as to compensate the error generated by the temperature change of the connection part of the thermocouple and the measuring device.

The prior art has the following problems:

1. the existing compensation lead is easy to age and poor in fire resistance due to the fact that a thermal effect is generated when working, and the use safety is affected;

2. the existing compensating wire has poor acid-base corrosion resistance and influences the practicability of the wire.

Disclosure of Invention

Aiming at the defects of the prior art, the utility model provides a flame retardant coating which solves the problems of poor ageing resistance and poor corrosion resistance existing in the prior art.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides a fire-resistant compensation wire for thermocouple, includes the restrictive coating, the inside corrosion-resistant layer that is provided with of restrictive coating, the inside anti-pull net that is provided with of corrosion-resistant layer, the inside resistance to compression core that is provided with of anti-pull net, the inside positive pole conductor and the negative pole conductor of being provided with of anti-pull net, positive pole conductor and negative pole conductor surface are provided with the insulating layer, the insulating layer surface is provided with the flame retardant coating.

As a preferable technical scheme of the utility model, the sheath layer is manufactured by cold drawing of a 304 stainless steel tube.

As a preferable technical scheme of the utility model, the inside of the sheath layer is provided with a corrosion-resistant layer, and the material of the corrosion-resistant layer is magnesium oxide.

As a preferable technical scheme of the utility model, the tensile net is distributed in a cylindrical shape, and the tensile net is made of copper.

As a preferable technical scheme of the utility model, the cross section of the compression-resistant core is fan-shaped, and the compression-resistant material is formed by weaving aramid fibers.

As a preferable technical scheme of the utility model, the insulating layer is filled with high-purity magnesia material, and the thickness of the insulating layer is 0.6-0.7mm.

As a preferable technical scheme of the utility model, the refractory layer is made of 304 stainless steel.

As a preferable technical scheme of the utility model, the positive electrode conductor and the negative electrode conductor are axisymmetric with respect to the center line of the sheath layer.

Compared with the prior art, the utility model provides a refractory compensating wire for a thermocouple, which has the following beneficial effects:

1. the refractory compensation wire for the thermocouple is made of 304 stainless steel, an insulating layer is filled with high-purity magnesium oxide, and a sheath layer is made of 304 stainless steel pipes through cold drawing.

2. According to the refractory compensation wire for the thermocouple, the corrosion-resistant layer is arranged in the sheath layer, the material of the corrosion-resistant layer is magnesium oxide, and the magnesium oxide has the characteristics of corrosion resistance, high and low temperature resistance, high insulating strength and the like, so that the service life of the wire is greatly prolonged.

Drawings

FIG. 1 is a schematic diagram of the overall structure of the present utility model;

FIG. 2 is a schematic view of the transverse cross-sectional structure of the present utility model;

FIG. 3 is a schematic view of a longitudinal cross-sectional structure of the present utility model;

fig. 4 is a schematic side view of the present utility model.

In the figure: 1. a sheath layer; 2. a corrosion resistant layer; 3. a stretch-proof net; 4. a compression resistant core; 5. a positive electrode conductor; 6. a negative electrode conductor; 7. an insulating layer; 8. and a refractory layer.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Referring to fig. 1 to 4, in the present embodiment: the utility model provides a fire-resistant compensation wire for thermocouple, includes restrictive coating 1, and restrictive coating 1 is inside to be provided with corrosion-resistant layer 2, and corrosion-resistant layer 2 is inside to be provided with tensile net 3, and tensile net 3 is inside to be provided with resistance to compression core 4, and tensile net 3 is inside to be provided with positive electrode conductor 5 and negative electrode conductor 6, and positive electrode conductor 5 and negative electrode conductor 6 surface are provided with insulating layer 7, and insulating layer 7 surface is provided with flame retardant coating 8.

In the embodiment, the sheath layer 1 is formed by cold drawing a 304 stainless steel tube, and has a shielding function of safety protection; the inside of the sheath layer 1 is provided with a corrosion-resistant layer 2, the corrosion-resistant layer 2 is made of magnesium oxide, and the magnesium oxide has the characteristics of corrosion resistance, high and low temperature resistance, high insulating strength and the like; the anti-pulling net 3 is distributed in a cylindrical shape, and the anti-pulling net 3 is made of copper, so that the tensile capacity of the lead is conveniently enhanced; the cross section of the compression resistant core 4 is fan-shaped, the compression resistant core 4 is made of aramid fiber, and the compression resistance of the wire is greatly enhanced by the aramid fiber; the insulating layer 7 is filled with high-purity magnesium oxide material, and the thickness of the insulating layer 7 is 0.6-0.7mm, so that the safety performance of the lead is met; the refractory layer 8 is made of 304 stainless steel, and the 304 stainless steel has good refractory performance; the positive electrode conductor 5 and the negative electrode conductor 6 are centrally symmetrical about the central line of the sheath layer 1, so that the whole lead is more attractive.

The working principle and the using flow of the utility model are as follows: an operator is provided with a fire-resistant layer 8 outside the insulating layer, the fire-resistant layer 8 is made of 304 stainless steel, the 304 stainless steel has good fire resistance, the surface of the wire is provided with a sheath layer 1, the sheath layer 1 is made of 304 stainless steel pipes by cold drawing, a tensile net 3 is arranged inside the corrosion-resistant layer 2, the tensile net 3 is made of copper, the tensile performance of the wire is greatly improved, a compression-resistant core 4 is arranged inside the tensile net 3, the compression-resistant core 4 is made of aramid fibers by braiding, and the aramid fibers have good compression resistance, so that the fire resistance and the tensile strength performance meet the actual use requirements; through being provided with corrosion-resistant layer 2 in restrictive coating 1 inside, corrosion-resistant layer 2's material is magnesium oxide, and magnesium oxide has corrosion-resistant, high low temperature resistant, characteristics such as dielectric strength is big, has improved the corrosion resistance of wire and has prolonged the life of wire greatly.

Finally, it should be noted that: the foregoing description is only a preferred embodiment of the present utility model, and the present utility model is not limited thereto, but it is to be understood that modifications and equivalents of some of the technical features described in the foregoing embodiments may be made by those skilled in the art, although the present utility model has been described in detail with reference to the foregoing embodiments. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

Claims

1. A refractory compensating wire for a thermocouple, characterized by: including restrictive coating (1), restrictive coating (1) inside is provided with corrosion-resistant layer (2), corrosion-resistant layer (2) inside is provided with anti-pulling net (3), anti-pulling net (3) inside is provided with resistance to compression core (4), anti-pulling net (3) inside is provided with positive electrode conductor (5) and negative electrode conductor (6), positive electrode conductor (5) and negative electrode conductor (6) surface are provided with insulating layer (7), insulating layer (7) surface is provided with flame retardant coating (8).

2. A refractory compensating wire for a thermocouple as recited in claim 1, wherein: the sheath layer (1) is manufactured by cold drawing of a 304 stainless steel tube.

3. A refractory compensating wire for a thermocouple as recited in claim 1, wherein: the novel anti-corrosion protective sleeve is characterized in that an anti-corrosion layer (2) is arranged in the protective sleeve layer (1), and the anti-corrosion layer (2) is made of magnesium oxide.

4. A refractory compensating wire for a thermocouple as recited in claim 1, wherein: the tensile nets (3) are distributed in a cylindrical shape, and the tensile nets (3) are made of copper.

5. A refractory compensating wire for a thermocouple as recited in claim 1, wherein: the cross section of the compression resistant core (4) is fan-shaped, and the compression resistant core (4) is made of aramid fiber through braiding.

6. A refractory compensating wire for a thermocouple as recited in claim 1, wherein: the insulating layer (7) is filled with high-purity magnesium oxide material, and the thickness of the insulating layer (7) is 0.6-0.7mm.

7. A refractory compensating wire for a thermocouple as recited in claim 1, wherein: the refractory layer (8) is made of 304 stainless steel.

8. A refractory compensating wire for a thermocouple as recited in claim 1, wherein: the positive electrode conductor (5) and the negative electrode conductor (6) are axisymmetric with respect to the center line of the sheath layer (1).