Thermal insulation device for radial thermal expansion

Abstract

The invention belongs to the technical field of high-temperature equipment and pipeline thermal insulation and particularly relates to a thermal insulation device for radial thermal expansion. The thermal insulation device for radial thermal expansion comprises a protection layer, wherein the protection layer is composed of corrugated plates, a connecting band is wound around the outer circumference of each corrugated plate, the two ends of each connecting band are connected through a spring pull frame, the connecting bands are connected with the corrugated plates through J-shaped clamps, the J-shaped clamps are fastened to the corrugated plates, an S-shaped clamp is arranged at the position where the two corrugated plates adjacent in the vertical direction are in overlap joint, and the two ends of the S-shaped clamp are fastened to the corrugated plates. According to the thermal insulation device for radial thermal expansion, the S-shaped clamp in the same form as the corrugated plates is arranged at the position where the corrugated plates adjacent in the vertical direction are in overlap joint so that protective plates can be connected and fixed in the vertical direction, after thermal insulation is conducted on the whole device, the steel strips are fixed through a J-shaped clamp with corrugations on one side so as to be attached to vertical equipment or a pipeline when steel strips are wound around the vertical equipment or the vertical pipeline, the steel strips for the external protection layer are connected through the spring pull frame used for fixation, the thermal insulation device for radial thermal expansion has a certain extension range, and it is guaranteed that stress of all circles of steel strips are even.

Description

technical field [0001] The invention relates to a radial thermal expansion heat preservation device, which belongs to the technical field of high temperature equipment and pipeline heat preservation. Background technique [0002] In the past petrochemical installations, the scale of the equipment was small, and the outer protective layer of thermal insulation with small specifications of equipment and pipelines used flat plates. The problem of cracking at the joint is not obvious; with the scale-up of the device, the diameter of the high-temperature reactor and the specification of the pipeline connected to it are getting larger and larger. After the rivets are fixed to it, the lap joint cannot expand. When the high-temperature pipeline is running, the radial thermal expansion of the equipment or pipeline exceeds the compression of the inner insulation layer, resulting in cracking at the lap joint of the protective plate, and the steel belt of the binding protective layer is...

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Problems solved by technology

[0002] In the past petrochemical installations, the scale of the equipment was small, and the outer protective layer of thermal insulation with small equipment and pipelines was made of flat plates. The problem of cracking at the joint is not obvious; with the scale-up of the device, the diameter of the high-temperature reactor and the specification of the pipeline connected to it are getting larger and larger. After the rivets are fixed to it, the lap joint cannot expand. When the high-temperature pipeline is running, the radial thermal expansion of the equipment or pipeline exceeds the compression of the inner insulation layer, resulting in cracking at the lap joint of the protective plate, and the steel belt of the binding protective layer is rigidly connected. break, the protective layer falls off and cannot play the role of the protective layer

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