CN2362253Y

CN2362253Y - Mineral insulated heating cable

Info

Publication number: CN2362253Y
Application number: CN 99205365
Authority: CN
Inventors: 武志远
Original assignee: 武志远
Current assignee: Langfang Shengda petroleum electric heating equipment Co., Ltd.
Priority date: 1999-03-23
Filing date: 1999-03-23
Publication date: 2000-02-02
Anticipated expiration: 2009-03-23

Abstract

The utility model discloses a mineral insulated heating cable. The mineral insulated heating cable uses a solid core wire made of manganese white copper or nickel-chromium materials as a heating core body, and the periphery of the heating core body is circularly distributed with insulated layers made of densed mineral insulated materials; the outside of the insulated layers are wrapped with a metal sheath. The utility model has the advantages of fire resistance, explosion resistance, corrosion resistance, aging resistance, vibration resistance, abrasion resistance, homogeneous heating, etc. With firm building, the utility model can meet the construction requirements under various environmental conditions, with 20 years of service life, the utility model is an ideal heating cable.

Description

A kind of mineral insulation heating cable

The utility model relates to a kind of heating cable, relates in particular to a kind of particularly cable of mineral oil heating of oil that is used for.

In the present prior art, electric tracing as pipeline or oil tank adopts ribbon heater or electrothermal tube more, because what adopted the ribbon heater is organic material, heat-resisting, fire-resistant, wear-resisting, decay resistance is relatively poor, and easily aging, and electrothermal tube is owing to limited by technology and shape, its insulating material is can't can closely knit, heat conductivility is reduced, very easily blow and influence useful life.

The purpose of this utility model provides a kind of heating cable of heat-resisting, fire-resistant, corrosion-resistant, antivibration wear resistant, makes it both have good heat-conducting, has long useful life again.

Concrete structure of the present utility model is such, and it comprises a heating core body, and uniform ring is around being distributed with the mineral insulation layer around the heating core body, and the outside sealing of mineral insulation layer is with the metal armouring crust.

The heating core body is the solid heart yearn of being made by manganese-copper or nickel chromium triangle material.

The metal armouring crust of sealing shroud outside the mineral insulation layer is the metallic sheath of being made by stainless steel or copper-nickel alloy.

Around the heating core body uniform ring around the mineral insulation layer be with the closely knit insulating barrier of magnesia powder or silica flour compacting.

The utility model is compared with conventional art, has advantages such as fire-resistant explosion-proof, corrosion-resistant, anti-aging, antivibration wear resistant, heating be even, and firm in structure, the life-span can be satisfied the construction requirement under the various environment for 20 years.

Be described in further detail as follows below in conjunction with accompanying drawing to embodiment of the present utility model:

Fig. 1 is the cutaway view of mineral insulation heating cable;

Fig. 2 is the sectional view of mineral insulation heating cable;

Mineral insulation heating cable described in the figure, it has a heating core body 1, it is that the solid heart yearn that adopts manganese-copper or nickel chromium triangle material to make constitutes, the mineral insulation layer 2 that uniform ring constitutes around distributing closely knit magnesium oxide or quartz sand around the heating core body 1, the mineral insulation layer is with the sealing metal sheath of being made by stainless steel or copper-nickel alloy 3 outward, before making heating cable, its heating core body is the directly bar-shaped of 8 millimeters of Φ 5～Φ, stainless steel or copper-nickel alloy sheath are the pipes of 50 millimeters of Φ 35～Φ, its insulating material is to be pressed in the outer tube of packing in single file behind the suit, because the insulating case location is arranged, thereby guaranteed the concentricity of core body and oversheath, pass through drawing so again, anneal, make the mineral insulation heating cable of the various diameters of designing requirement.

Claims

1. a mineral insulation heating cable is characterized in that it comprises that heating core body (1), uniform ring are around being distributed in heating core body (1) mineral insulation layer (2) and the metal armouring crust (3) of sealing shroud outside mineral insulation layer (2) on every side.

2. mineral insulation heating cable according to claim 1 is characterized in that said heating core body (1) is the solid heart yearn of being made by manganese-copper or nickel chromium triangle material.

3. mineral insulation heating cable according to claim 1 is characterized in that the metal armouring crust (3) of sealing shroud outside mineral insulation layer (2) is the metallic sheath of being made by stainless steel or copper-nickel alloy.

4. mineral insulation heating cable according to claim 1, it is characterized in that generating heat core body (1) on every side uniform ring around mineral insulation layer (2) be with magnesia powder or the closely knit insulating barrier of silica flour compacting.