High-strength thermal-insulation double-wall corrugated tube

Abstract

The invention discloses a high-strength thermal-insulation double-wall corrugated tube. The high-strength thermal-insulation double-wall corrugated tube comprises an inner wall, a thermal-insulation layer, a buffer device, a corrugated outer wall, a fiber reinforcing layer, a male joint and a female joint, wherein the thermal-insulation layer is fixedly arranged on the outer surface of the inner wall; the buffer device is arranged at the outer side of the thermal-insulation layer; the buffer device comprises an upper gasket, a lower gasket and a spring; one side of the upper gasket is fixed with the outer surface of the thermal-insulation layer; the other side of the upper gasket is fixedly connected with one end of the spring; the other end of the spring is fixedly connected with one sideof the lower gasket; and one side, away from the spring, of the lower gasket is fixedly connected with the bottom of the corrugated outer wall. According to the high-strength thermal-insulation double-wall corrugated tube disclosed by the invention, the thermal-insulation layer can be used for performing thermal insulation on liquid transported inside the inner wall, and further can be used for preventing the inner wall from a thermal-expansion cold-contraction phenomenon when the outside temperature fiercely changes, so that the inner wall is protected, the inner wall is prevented from beingdamaged, and the service life of the inner wall is prolonged; and moreover, pressure on the corrugated outer wall is eliminated through the buffer device, so that the corrugated outer wall is prevented from being damaged.

Description

technical field [0001] The invention relates to the technical field of double-wall bellows, in particular to a high-strength thermal insulation double-wall bellows. Background technique [0002] Double-wall corrugated pipe is a new type of pipe with a ring-shaped outer wall and a smooth inner wall. It was first successfully developed in Germany in the early 1980s. After more than ten years of development and improvement, it has developed from a single variety to a complete product series. At present, the production process and application technology are very mature. Due to its excellent performance and relatively economical cost, it has been greatly promoted and applied in developed countries such as Europe and the United States. In my country, the promotion and application of double-wall corrugated pipes are on the rise, and all technical indicators have reached the use standards. [0003] However, the existing double-wall corrugated pipe does not have a special insulati...

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Problems solved by technology

[0003] However, the existing double-wall corrugated pipe does not have a special insulation device. When the outside temperature drops, the inner wall is easily damaged due to thermal expansion and contraction, and the corrugated outer wall of the existing double-wall corrugated pipe has no buffer device, so it cannot Eliminate the pressure on the corrugated outer wall, which is easy to damage the corrugated outer wall. Therefore, we propose a high-strength thermal insulation double-wall corrugated pipe

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