A protection device for buried pipelines

A protection device, buried pipeline technology, applied in the direction of pipeline protection, pipeline support, pipe/pipe joints/pipe fittings, etc., can solve the problems of displacement of the main line and casing, easy water ingress, etc., to eliminate displacement difference, improve thermal insulation and heat tracing effect

Inactive Publication Date: 2017-12-26
FOSHAN GAOFU PETROCHINA FUEL ASPHALT
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  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

[0003] Asphalt is transported through pipelines, generally using casing-type buried pipelines, and heat tracing devices are installed in the pipelines. However, after long-term use of the buried pipelines from the underground, water is easy to enter, and small animals such as mice are also easy to enter the casing. Displacement difference will also be caused by thermal expansion and contraction between the wire and the casing

Method used

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  • A protection device for buried pipelines

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Embodiment Construction

[0025] The preferred embodiments of the present invention will be described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described here are only used to illustrate and explain the present invention, and are not intended to limit the present invention.

[0026] A protection device for buried pipelines according to the present invention includes a main pipe 1 and a casing 2, a heat tracing device is provided inside the main pipe 1, the main pipe 1 is inserted into the casing 2, and a cover plate is provided at the connecting position of the main pipe 1 and the casing 2 3. The cover plate 3 is at the position where the casing 2 is 200-300 mm above the ground, the diameter of the cover plate 3 is larger than the diameter of the casing 2, and the flat steel 4 is covered between the edge of the cover plate 3 and the casing 2, and the flat steel 4 has 5-10mm wide.

[0027] A radial spring 5 is installed circumferentially ...

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Abstract

The invention discloses a protecting device for a buried pipeline. The protecting device comprises a main pipe and a sleeve. The main pipe is inserted into the sleeve. A cover plate is arranged at the junction between the main pipe and the sleeve. The diameter of the cover plate is larger than that of the sleeve. The space between the edge of the cover plate and the sleeve is wrapped with flat steel. Radial springs are installed between the main pipe and the sleeve in the circumferential direction. Axial springs are arranged between the sleeve and the cover plate. According to the protecting device for the buried pipeline, through the arrangement of the cover plate and the flat steel, the heat preservation effect and the heat tracing effect of a main pipeline are improved, the displacement difference caused by thermal expansion between the main pipeline and the sleeve can be eliminated, and small animals such as rats can be prevented from entering the sleeve.

Description

technical field [0001] The invention belongs to a protection device, and in particular relates to a protection device for buried pipelines. Background technique [0002] In recent years, my country's transportation industry has maintained a good momentum of sustained, rapid and healthy development. Highway construction has developed rapidly. The construction of expressways and urban and rural roads has achieved historic breakthroughs, becoming an important booster for economic and social development. The development of highway construction , not only improves the transportation capacity, but also plays an important role in improving the investment environment and optimizing the industrial layout. Therefore, the demand for asphalt is also increasing. [0003] Asphalt is transported through pipelines, generally using casing-type buried pipelines, and heat tracing devices are installed in the pipelines. However, after long-term use of the buried pipelines from the underground, w...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16L7/02F16L57/04
CPCF16L7/02F16L57/04
Inventor 陈美英吴国彬陈志明
Owner FOSHAN GAOFU PETROCHINA FUEL ASPHALT
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