CN219938557U - High-temperature-power-resistant constant electric tracing band - Google Patents

Abstract

The utility model discloses a high-temperature-resistant power constant electric tracing band, and belongs to the technical field of electric tracing bands. The structure comprises a sheath layer, an explosion-proof layer is arranged inside the sheath layer, an inner insulating layer is arranged on the inner side of the explosion-proof layer, four symmetrically distributed heating belts are arranged inside the inner insulating layer, annular arrays are distributed at positions between the heating belts, a wire core insulating layer is arranged inside the inner insulating layer, two symmetrically distributed buses are arranged inside the wire core insulating layer, wire core shielding layers are arranged on the outer sides of the buses, and bus isolation belts are arranged between the buses. The electric tracing band adopts a mode of combining a heating wire and a glass fiber rope to replace the former 2080 nickel-chromium alloy wire, so that the expansion coefficient of the glass fiber is smaller in the heating process of the heating band, and the heating rope cannot be elongated; meanwhile, the heating wire is copper-nickel wire, so that good thermal stability is maintained in the heating process, and the resistance value is relatively improved along with the temperature rise.

Description

High-temperature-power-resistant constant electric tracing band

Technical Field

The utility model relates to the technical field of electric tracing bands, in particular to a high-temperature-resistant power-constant electric tracing band.

Background

The electric tracing band is composed of conductive polymer, two parallel metal wires and insulating protecting layer. The conductive polymer has high positive temperature coefficient, and can be connected in parallel, so that the output power can be automatically regulated along with the temperature change of a heated system, the heating temperature can be automatically limited, the conductive polymer can be arbitrarily shortened or lengthened in a certain range for use, and the conductive polymer can be allowed to be overlapped in a plurality of times without high temperature points and burnout.

The current market circulation line, the principle of generating heat is by the monofilament, and the material is 2080 nichrome, and the temperature that generates heat is high, and the alloy wire appears the phenomenon of design after generating heat, and when the temperature that generates heat is high, the expansion phenomenon appears in the insulating layer, and the heater strip winding is inseparable, does not have elasticity. After cooling, the fluoroplastic shrinks, so that the heating wire cannot shrink back after being elongated, and the elongated heating wire can be bent, thereby influencing the use.

There is also a problem in welding, the heater strip material is 2080 nichrome, the sinle silk material is tinned annealed copper wire, the welding material is tin, the material of three different materials is in the same place through soldering tin welding, can appear welding insecure problem to soldering tin can appear under high temperature environment and the phenomenon of desoldering, thereby influences normal use.

When the electric power is on, the heating wire with high winding density will generate vortex phenomenon, under the long-time power on, the bus is forced to generate heat, the heating wire generates heat, the bus also generates heat, thereby forming temperature increase, and the temperature control device needs to be additionally arranged.

Disclosure of Invention

The utility model aims to provide a high-temperature-resistant power constant electric tracing band so as to solve the problems in the background technology.

In order to achieve the above purpose, the present utility model provides the following technical solutions:

the utility model provides a invariable electric tracing band of high temperature resistant power, includes the restrictive coating, the inside explosion-proof layer that is provided with of restrictive coating, the explosion-proof layer inboard is provided with the inner insulation layer, the inside four symmetrically distributed's of being provided with of inner insulation layer heating band, the position is annular array distribution between the heating band, the inside sinle silk insulating layer that is provided with of inner insulation layer, sinle silk insulating layer inside is provided with two symmetrically distributed's generating lines, the generating line outside all is provided with sinle silk shielding layer, be provided with the busbar median between the generating line.

As a further scheme of the utility model: the heating belt comprises a heating wire, glass fiber ropes, a teflon insulating separation sheet, insulating heat conducting particles and an isolation layer, wherein the heating wire is positioned at the inner position of the inner insulating layer, the glass fiber ropes are arranged on the outer sides of the heating wire, the teflon insulating separation sheet is arranged on the lower sides of the glass fiber ropes, and the isolation layer is arranged on the lower sides of the teflon insulating separation sheet.

As still further aspects of the utility model: insulating heat conduction particles are arranged in the teflon insulating separation sheet.

As still further aspects of the utility model: the sheath layer is made of aluminum.

As still further aspects of the utility model: the inner insulating layer is made of glass fiber.

Compared with the prior art, the utility model has the beneficial effects that:

1. the heating wire and glass fiber rope combined mode is adopted in the electric tracing band, the former 2080 nickel-chromium alloy wire is replaced, the expansion coefficient of the glass fiber is small in the heating process of the heating band, and the heating rope cannot be elongated.

2. In the heating process of the electric tracing band, the vortex phenomenon can occur in the heating band, the vortex phenomenon can also occur in the heating wire in the heating band, the two are mutually interfered, and the condition of heating of a bus cannot occur; in addition, the heating wire is copper-nickel wire, so that good thermal stability is maintained in the heating process, and the resistance value is relatively improved along with the temperature rise.

3. Glass fiber is adopted as an inner insulating layer material, and the temperature resistance grade is higher; the sheath layer is made of aluminum, and the heat resistance grade is stronger than that of a common product.

Drawings

FIG. 1 is a cross-sectional view of the utility model;

fig. 2 is a partial enlarged view of the utility model a.

In the figure: 1. a sheath layer; 2. an explosion-proof layer; 3. a heating belt; 4. an inner insulating layer; 5. a wire core insulating layer; 6. a wire core shielding layer; 7. a bus isolation belt; 8. a bus; 31. a heating wire; 32. glass fiber ropes; 33. teflon insulating separator; 34. insulating heat conducting particles; 35. an isolation 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.

In the description of the present utility model, it should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "top," "bottom," "inner," "outer," and the like indicate or are based on the orientation or positional relationship shown in the drawings, merely to facilitate description of the present utility model and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

Example 1

Referring to fig. 1-2, the embodiment provides a high temperature power resistant constant electric tracing band, which comprises a sheath layer 1, wherein an explosion-proof layer 2 is arranged inside the sheath layer 1, an inner insulating layer 4 is arranged inside the explosion-proof layer 2, four symmetrically distributed heating bands 3 are arranged inside the inner insulating layer 4, the positions between the heating bands 3 are distributed in an annular array, a wire core insulating layer 5 is arranged inside the inner insulating layer 4, two symmetrically distributed buses 8 are arranged inside the wire core insulating layer 5, wire core shielding layers 6 are arranged outside the buses 8, and bus isolation bands 7 are arranged between the buses 8. The heating principle of this electric tracing band is that the copper nickel alloy silk generates heat, and the inside heater strip 31 of heater strip 3 is when generating heat, and the fine expansion coefficient of glass is little, and heater strip 3 can not be elongated, and heater strip 31 is twined into the spring form, even elongate, the spring can be stretched, can shrink back after the cooling, can not appear heater strip 31 and be elongated the phenomenon. The wire core shielding layer 6 arranged on the outer side of the bus 8 can ensure that energy generated by the bus 8 in the heating process can not interfere with the outside, and the bus isolation belt 7 can play an isolating role on the two buses 8, so that the stability of the heat tracing temperature of the electric heat tracing belt is further improved.

Further, the heating belt 3 comprises a heating wire 31, a glass fiber rope 32, a teflon insulating separation sheet 33, insulating heat conducting particles 34 and an isolation layer 35, wherein the heating wire 31 is positioned at the inner position of the inner insulating layer 4, the glass fiber rope 32 is arranged at the outer side of the heating wire 31, the teflon insulating separation sheet 33 is arranged at the lower side of the glass fiber rope 32, and the isolation layer 35 is arranged at the lower side of the teflon insulating separation sheet 33.

Still further, the teflon insulating separator 33 is internally provided with insulating heat conductive particles 34. The insulating and thermally conductive particles 34 are magnesium oxide particles. The electric heating belt is flatter, the surface heating load is reduced, the heat transfer area of the pipeline is increased, and the heat transfer efficiency and the highest maintenance temperature of the electric heating belt are improved.

Still further, the material of the sheath layer 1 is aluminum. Compared with common products, the aluminum material has stronger heat resistance, thereby further enhancing the stability of the electric tracing band in the working process.

Still further, the material of the inner insulating layer 4 is glass fiber. The glass fiber fluid maintains the temperature of 180-205 ℃ and meets the high-temperature heat tracing requirement.

The electric tracing band has good stability, can be applied to tracing of petroleum, chemical industry, electric power, metallurgy and other pipeline systems, storage tanks, valves and pump bodies, and can meet the actual use requirements, and the process temperature maintenance or freezing prevention of meter pipelines.

It should be noted that, the foregoing embodiments only specifically and clearly describe the technical solutions and technical features of the present utility model. And those skilled in the art will not be able to describe in detail the above embodiments regarding the schemes or features belonging to the prior art or common general knowledge.

In addition, the technical solutions of the present utility model are not limited to the above-mentioned embodiments, and those skilled in the art should consider the description as a whole, and the technical solutions in the embodiments may be appropriately combined, so as to form other embodiments that can be understood by those skilled in the art.

Claims (5)

1. The utility model provides a invariable electric tracing band of high temperature resistant power, its characterized in that, including restrictive coating (1), restrictive coating (1) inside is provided with explosion-proof layer (2), explosion-proof layer (2) inboard is provided with interior insulating layer (4), interior insulating layer (4) inside is provided with four symmetric distribution's heating band (3), the position is annular array and distributes between heating band (3), interior insulating layer (4) inside is provided with sinle silk insulating layer (5), sinle silk insulating layer (5) inside is provided with two symmetric distribution's generating lines (8), generating line (8) outside all is provided with sinle silk shielding layer (6), be provided with busbar median (7) between generating line (8).

2. The high-temperature-power-resistant constant electric tracing band according to claim 1, wherein the heating band (3) comprises a heating wire (31), a glass fiber rope (32), a teflon insulating separation sheet (33), insulating heat conducting particles (34) and an isolating layer (35), the heating wire (31) is located at the inner position of the inner insulating layer (4), the glass fiber rope (32) is arranged on the outer side of the heating wire (31), the teflon insulating separation sheet (33) is arranged on the lower side of the glass fiber rope (32), and the isolating layer (35) is arranged on the lower side of the teflon insulating separation sheet (33).

3. A high temperature power resistant constant electric tracing band according to claim 2, characterized in that said teflon insulating separator sheet (33) is internally provided with insulating heat conducting particles (34).

4. The high-temperature-power-resistant constant electric tracing band according to claim 1, wherein the material of the sheath layer (1) is aluminum.

5. The high-temperature-power-resistant constant electric tracing band according to claim 1, wherein the inner insulating layer (4) is made of glass fiber.