Explosion-proof self-temperature-control heating tape and preparation method thereof

Abstract

The invention discloses an anti-explosion self-temperature-control heating tape and a preparation method thereof. The anti-explosion self-temperature-control heating tape comprises wires, a PTC, a heating wire layer, an inner sheath, a metal shielding layer and an outer sheath from inside to outside, the number of the wires is two, the two wires are arranged in parallel, and the PTC is tightly wrapped outside the two wires. The heating wire layer is prepared by tightly wrapping a heating wire outside the PTC in a winding manner, the inner sheath is tightly wrapped outside the heating wire layer, the outer layer of the inner sheath is a net-shaped woven metal shielding layer, and the outer sheath is tightly wrapped outside the metal shielding layer. According to the anti-explosion self-temperature-control heating tape and the preparation method thereof, the anti-explosion self-temperature-control heating tape is reasonable in structural design, uniform in heating, high in heating efficiency and excellent in flexibility, is free of pipeline damage, is capable of tracing heat for a long distance and is anti-explosion, anti-bending, anti-oxidation, waterproof and anti-electric shock; the whole-line self-adaptive temperature control effect of the heating tape is achieved through the self-adaptive temperature control characteristic of PTC, and the preparation method is simple.

Description

technical field [0001] The invention belongs to the field of heating elements, and in particular relates to an explosion-proof self-temperature-control heating belt and a preparation method thereof. Background technique [0002] Most of the crude oil produced in my country is highly viscous, easy to condense, and high in wax content. Generally, the wax content is 15-25%. When the temperature is low, the paraffin in the crude oil will condense and deposit in the oil pipeline. , The deposited paraffin will significantly reduce the oil transportation capacity of the oil pipeline. The oil itself will also become viscous, and even impurities in the oil pipeline will be silted up and blocked, which will affect the normal oil transportation. In severe cases, it may lead to dangerous accidents such as pipe wall rupture. Pipeline heat tracing. [0003] In the prior art, the heating tape used for heat tracing of pipes has the following technical problems: 1. The construction cost is ...

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Problems solved by technology

[0003] In the prior art, the heating tape used for heat tracing of pipes has the following technical problems: 1. The construction cost is high, the mechanical properties are poor, it is easy to burst, it is easy to damage the pipe, it cannot be used for long-distance heat tracing, and its service life is short; 2. The heating tape The heat tracing power is small and there are many power supply points, so it is very difficult to repair the fault; 3. The heating method is difficult to realize the self-control of the temperature

[0004] The Chinese patent application number is CN202021744161.9, which discloses a fuel-type heating belt and a heating system, including a protective shell; a microbial hard medium, and the microbial hard medium is distributed with interconnected medium pores; The fuel air pipe is located inside the microbial hard culture medium, and a plurality of fuel air pipe escape holes are distributed on the surface, and the fuel air pipe escape holes communicate with the medium pores; the air pipe, the air pipe is located in the Inside the hard culture medium for microorganisms, a plurality of air pipe escape holes are distributed on the surface, and the air pipe escape holes are connected with the medium pores. At the same time, microorganisms are used to directly use fuel gas energy substances to realize heat energy supply. The heating method is relatively complicated, and it is difficult to realize self-control of temperature, and no preparation method is given.

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