CN213123893U

CN213123893U - Composite thermocouple compensation lead

Info

Publication number: CN213123893U
Application number: CN202021614582.XU
Authority: CN
Inventors: 徐建康
Original assignee: Heilongjiang Jinda Cable Co Ltd
Current assignee: Heilongjiang Jinda Cable Co Ltd
Priority date: 2020-08-06
Filing date: 2020-08-06
Publication date: 2021-05-04
Anticipated expiration: 2030-08-06

Abstract

The utility model discloses a compound thermocouple compensation wire, including wire main part, polytetrafluoroethylene insulating layer, fire resistant mica tape, anti-corrosion coating, nylon fiber layer, glass fiber filler and cable core, the inboard parcel of wire main part has the oversheath, the inboard parcel of oversheath has the fire resistant mica tape, the inboard parcel in fire resistant mica tape has anti-corrosion coating, the glass fiber filler inboard is equipped with the polytetrafluoroethylene insulating layer, the inboard parcel of polytetrafluoroethylene insulating layer has the elastic layer, the elastic layer inboard is equipped with fire-retardant layer, the inboard parcel of fire-retardant layer has the cable core. The utility model discloses a be equipped with anti-corrosion coating and fire resistant mica tape, be applicable to high temperature corrosive gas environment, whole device improves the physical properties and the mechanical properties of galvanic couple temperature measurement circuit, adopts stranded sinle silk or diameter compensation wire can improve the winding nature of circuit, and not only the wiring is convenient, but also adjustable line resistance or shielding external disturbance.

Description

Composite thermocouple compensation lead

Technical Field

The utility model relates to a compensation wire field for the thermocouple particularly, relates to a compound thermocouple compensation wire.

Background

The principle of thermocouple temperature measurement is based on the fact that when two different conductors or semiconductors are connected into a closed loop, and the temperatures of two junctions are different, thermoelectric potential is generated in the loop, and the phenomenon is called thermoelectric effect and is also called Seebeck effect. The temperature measuring device is the most widely applied temperature device in temperature measurement, and is mainly characterized by wide temperature measuring range, stable performance, simple structure, good dynamic response, capability of transmitting 4-20mA electric signals remotely and convenience for automatic control and centralized control. However, the electric signal of the thermocouple needs a special lead for transmission, namely the compensation lead is divided into a compensation type and an extension type, different thermocouples need different compensation leads, and the main function of the thermocouple is to be connected with the thermocouple, so that the reference end of the thermocouple is far away from a power supply, and the temperature of the reference end is stable.

The method generally adopted is to coat an insulating material on the surface of a conductor with the same thermoelectric property as a noble metal thermocouple to prepare a flexible cable. Because the capability of the soft cable insulating material for resisting high temperature and corrosion is limited to a certain extent, the soft cable insulating material is often used in some high-temperature corrosive gas environments, is easy to damage and deteriorate, and directly influences the accuracy and automatic control effect of temperature measurement; especially, when the temperature controller can be connected to the environment higher than the temperature field at the cold end of the noble metal thermocouple, the cold end extension and the temperature compensation can not be realized, and a composite thermocouple compensation lead is needed to solve the problem.

An effective solution to the problems in the related art has not been proposed yet.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a compound thermocouple compensation wire to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a compound thermocouple compensation wire, includes wire main part, polytetrafluoroethylene insulating layer, fire resistant mica tape, anti-corrosion coating, nylon fiber layer, glass fiber filler and cable core, the inboard parcel of wire main part has the oversheath, the inboard parcel of oversheath has the fire resistant mica tape, the inboard parcel in fire resistant mica tape has anti-corrosion coating, anti-corrosion coating inboard is equipped with the nylon fiber layer, the inside parcel of nylon fiber layer has the glass fiber filler, the glass fiber filler inboard is equipped with the polytetrafluoroethylene insulating layer, the inboard parcel of polytetrafluoroethylene insulating layer has the elastic layer, the elastic layer inboard is equipped with fire-retardant layer, the inboard parcel of fire-retardant layer has the cable core.

Furthermore, the inner side of the fire-resistant mica tape is wrapped with a copper strip shielding layer, and the thickness of the copper strip shielding layer is 0.25 mm.

Further, an inner sheath wraps the inner side of the anti-corrosion layer, and the thickness of the inner sheath is 0.15 mm.

Further, the thickness of the outer sheath is 0.15mm, and the thickness of the inner sheath is the same as that of the outer sheath.

Furthermore, a waterproof layer is wrapped on the inner side of the elastic layer, and the thickness of the waterproof layer is 0.15 mm.

Further, the thickness of the polytetrafluoroethylene insulating layer is 0.25mm, and the thickness of the fire-resistant mica tape is 0.25 mm.

Compared with the prior art, the utility model discloses following beneficial effect has:

(1) the utility model relates to a compound thermocouple compensation wire, this device is equipped with anti-corrosion coating and fire-resistant mica tape, be applicable to high temperature corrosive gas environment, whole device improves the physical properties and the mechanical properties of galvanic couple temperature measurement circuit, adopt stranded sinle silk or diameter compensation wire can improve the flexibility of circuit, it is convenient not only to work a telephone switchboard, also adjustable line resistance or shielding external disturbance, adopt thick diameter and the big compensation wire of coefficient of conductivity to replace the thermode, thermocouple loop resistance can be reduced, do benefit to measurement and automatic control, and is suitable for being generalized to use.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic structural view of a composite thermocouple compensation lead according to an embodiment of the present invention;

fig. 2 is a schematic structural view of the inside of a composite thermocouple compensation lead according to an embodiment of the present invention;

fig. 3 is a schematic structural view of a teflon insulating layer of a composite thermocouple compensation lead according to an embodiment of the present invention.

Reference numerals:

1. a lead body; 2. an outer sheath; 3. a polytetrafluoroethylene insulating layer; 4. fire-resistant mica tapes; 5. a copper strip shielding layer; 6. an anti-corrosion layer; 7. an inner sheath; 8. a nylon fiber layer; 9. a glass fiber filler; 10. an elastic layer; 11. a waterproof layer; 12. a flame retardant layer; 13. and a cable core.

Detailed Description

The following, with reference to the drawings and the detailed description, further description of the present invention is made:

referring to fig. 1-3, a composite thermocouple compensation wire according to an embodiment of the present invention includes a wire main body 1, a teflon insulating layer 3, a mica tape 4, an anti-corrosion layer 6, a nylon fiber layer 8, a glass fiber filler 9, and a cable core 13, wherein an outer sheath 2 wraps the inner side of the wire main body 1, the inner side of the outer sheath 2 wraps the mica tape 4, the inner side of the mica tape 4 wraps the anti-corrosion layer 6, the inner side of the anti-corrosion layer 6 is provided with the nylon fiber layer 8, the nylon fiber layer 8 mainly functions to enhance high temperature resistance, stability, and reliability of the wire, the nylon fiber layer 8 wraps the glass fiber filler 9, the inner side of the glass fiber filler 9 is provided with the teflon insulating layer 3, the inner side of the teflon insulating layer 3 wraps an elastic layer 10, the inner side of the elastic layer 10 is provided with a flame-retardant layer 12, and the inner side of the flame-retardant layer 12 is wrapped with the cable core 13.

Through the above technical scheme of the utility model, 4 inboard parcels of fire resistant mica tape have copper strips shielding layer 5, copper strips shielding layer 5's thickness is 0.25mm, 6 inboard parcels of anti-corrosion coating have inner sheath 7, the thickness of inner sheath 7 is 0.15mm, the thickness of oversheath 2 is 0.15mm, the thickness of inner sheath 7 is the same with the thickness of

oversheath

2, 10 inboard parcels of elastic layer have waterproof layer 11, waterproof layer 11's thickness is 0.15mm, polytetrafluoroethylene insulating layer 3's thickness is 0.25mm, fire resistant mica tape 4's thickness is 0.25 mm.

When specifically using, the utility model relates to a compound thermocouple compensation wire, this device is equipped with anti-corrosion coating 6 and fire-resistant mica tape 4, be applicable to high temperature corrosive gas environment, whole device improves the physical properties and the mechanical properties of galvanic couple temperature measurement circuit, adopt stranded sinle silk or diameter compensation wire can improve the flexibility of circuit, it is convenient not only to work a telephone switchboard, also can adjust line resistance or shield external disturbance, adopt the compensation wire that thick diameter and conductivity are big to replace the thermode, thermocouple loop resistance can be reduced, do benefit to measurement and automatic control, be fit for using widely.

In the description of the present invention, it should be noted that the terms "top", "bottom", "one side", "the other side", "front", "back", "middle part", "inside", "top", "bottom", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, which is only for the convenience of description and simplification of the description, but does not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention; the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance; furthermore, unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, as they may be fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The composite thermocouple compensation wire is characterized by comprising a wire main body (1), a polytetrafluoroethylene insulating layer (3), a fire-resistant mica tape (4), an anti-corrosion layer (6), a nylon fiber layer (8), a glass fiber filler (9) and a cable core (13), wherein an outer sheath (2) is wrapped on the inner side of the wire main body (1), the fire-resistant mica tape (4) is wrapped on the inner side of the outer sheath (2), the anti-corrosion layer (6) is wrapped on the inner side of the fire-resistant mica tape (4), the nylon fiber layer (8) is arranged on the inner side of the anti-corrosion layer (6), the glass fiber filler (9) is wrapped on the inner side of the nylon fiber layer (8), the polytetrafluoroethylene insulating layer (3) is wrapped on the inner side of the glass fiber filler (9), an elastic layer (10) is wrapped on the inner side of the polytetrafluoroethylene insulating layer (3), the cable is characterized in that a flame-retardant layer (12) is arranged on the inner side of the elastic layer (10), and the cable core (13) is wrapped on the inner side of the flame-retardant layer (12).

2. The composite thermocouple compensation lead according to claim 1, wherein the refractory mica tape (4) is wrapped with a copper tape shielding layer (5), and the thickness of the copper tape shielding layer (5) is 0.25 mm.

3. A composite thermocouple compensation wire according to claim 1, characterised in that the corrosion protection layer (6) is wrapped inside with an inner sheath (7), the inner sheath (7) having a thickness of 0.15 mm.

4. A composite thermocouple compensation wire according to claim 3, characterised in that the thickness of the outer sheath (2) is 0.15mm and the thickness of the inner sheath (7) is the same as the thickness of the outer sheath (2).

5. A composite thermocouple compensation lead according to claim 1, wherein the elastic layer (10) is wrapped with a waterproof layer (11), and the thickness of the waterproof layer (11) is 0.15 mm.

6. A composite thermocouple compensation lead according to claim 1, characterised in that the insulating layer of polytetrafluoroethylene (3) has a thickness of 0.25mm and the tapes of fire-resistant mica (4) has a thickness of 0.25 mm.