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Electric heater for pipeline

A pipeline electric heater and electric heater technology, applied in pipeline heating/cooling, pipeline systems, pipes/pipe joints/fittings, etc., can solve problems such as uneven heating temperature, low thermal efficiency, and low thermal conductivity of tiles. Achieve the effect of ensuring normal production, large heat conduction area and high thermal conductivity

Inactive Publication Date: 2007-02-07
成都市兴岷江电热电器有限责任公司
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  • Application Information

AI Technical Summary

Problems solved by technology

Its existing problems are, first, it only provides heat with constant power electric heating elements, lacks the detection and control of the actual oil temperature of crude oil, and it is difficult to meet the normal transportation of crude oil. The flow of crude oil in the oil pipeline changes with time, coupled with the change of external ambient temperature, therefore, the external heat provided by the heating source cannot be just a constant value, it should be based on the flow of crude oil and the environment The temperature is used to adjust the heat supply to achieve the purpose of controlling the temperature of the crude oil in the pipeline to meet the normal transportation of crude oil
Second, the thermal conductivity of ceramic tiles is low, so the thermal efficiency of the device is low; Third, the electric heating tiles are fixed on the oil pipeline by bonding, so it is inconvenient to replace and maintain
[0004] In addition, there is a problem of uneven heating temperature in the existing technology of using combustion heat to heat, fasten and seal the heat-shrinkable sleeve at the cable joint

Method used

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Embodiment Construction

[0018] Figure 4 It is shown that the two bush-shaped heat-conducting layers 9, 9a are made of high-efficiency heat-conducting materials (for example, the temperature range is 500°C, the insulation resistance is above 300MΩ, and the thermal conductivity is 0.9W / M°C); the two bush-shaped metal inner shells 7, An electric heating tube 8 is respectively fixed on the inner wall of 7a, and the electric heating tube 8 is coiled and evenly distributed back and forth along the axial direction parallel to the metal inner shell (see Figure 5 ); two bearing pad-shaped forming insulation layers 6, 6a are made of light aluminum silicate material, and the outer surface of the forming insulation layer is provided with two bearing pad-shaped shells 1, 1a, and the shells 1, 1a are stainless steel plates (such as thick 1.5 mm); the above-mentioned formed heat pipes 9, 9a, metal inner shells 7, 7a with electric heating pipes, formed heat insulating layers 6, 6a and outer shells 1, 1a have the s...

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Abstract

An electric heater for pipeline is an electric heater used for heating the pipeline or the medium therein. A temperature control unit is composed of a SCM and a temperature sensor, also has two bush-shape metal endoconches. On the inwall side of the two metal endoconches is fixed with an electric heating pipe, also has two bush-shape molding heat-conducting layers made of heat conducting materials used in shrinking on the pipeline. The outerwall side of the molding heat-conducting layers is joint with the inwall side of two metal endoconches. Also provided are two bush-shape molding insulating layers joint with the outerwall side of the two metal endoconches, two bush-shape shell on the external surface of the two molding insulating layers. Also provided are the fixed links joining the heating module on the pipeline. The invention has the advantages of high thermal efficiency, convenient to assemble and disassemble and is widely used in a variety of pipeline heating occasions.

Description

1. Technical field [0001] The invention relates to an electric heating device, in particular to an electric heating device capable of automatically controlling temperature and heating a pipeline or a medium in the pipeline. 2. Background technology [0002] During the transportation of crude oil in the oil pipeline, due to the change of ambient temperature, the oil temperature of the crude oil changes. After the oil temperature drops, the viscosity of the crude oil increases, which affects the flow of crude oil in the pipeline. Especially in winter, the oil pipeline in the north often Frozen plugging and bursting of pipes will affect the oil delivery volume, and in severe cases, affect the normal production of the pumping well. Therefore, heating measures are generally required for the transportation of crude oil in pipelines. my country's current petroleum pipeline heating has several methods such as oil boilers, coal boilers, gas boilers, electric heating belts, and slend...

Claims

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Application Information

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IPC IPC(8): F16L53/00F17D1/18F16L53/38
CPCF16L53/008F16L53/38
Inventor 谢萍
Owner 成都市兴岷江电热电器有限责任公司
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