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HDPE double-wall corrugated pipe online drilling method

A corrugated pipe and wave ring technology, which is applied in the field of online drilling of HDPE double-wall corrugated pipes, can solve the problems affecting the performance of the pipe and achieve the effect of smooth inner wall.

Active Publication Date: 2007-10-17
公元管道(上海)有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

And the pressure difference will exert force on the pipe wall in response to the change of ambient temperature, which will affect the performance of the pipe.

Method used

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  • HDPE double-wall corrugated pipe online drilling method
  • HDPE double-wall corrugated pipe online drilling method

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Embodiment Construction

[0016] In order to make the technical means, creative features, goals and effects achieved by the present invention easy to understand, the present invention will be further described below in conjunction with specific illustrations.

[0017] As shown in Figure 1, a HDPE double-wall corrugated pipe of the present invention has been perforated. The inner wall 6 of the corrugated pipe is provided with spaced hollow outer wall corrugations 7, and the top surface of each outer wall corrugation 7 is provided with a small wave trough 8. , there are process holes at 8 places in the small wave valley, such as process holes 10, 20, 30, 40 and 50 in the figure. In the pipe production process, the inner wall 6 and the outer wall corrugated ring 7 are extruded by two extruders. During the production process, the molten inner and outer wall materials are bonded together by the head mold and the forming module. After the pipe is formed, the outer wall is corrugated. The process hole of the ...

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Abstract

The present invention relates to a HDPE double-wall corrugated pipe having pierces on the external wall, and a perforating device and a perforating method thereof. A plurality of special hollow external wall corrugated rings are arranged outside the inner wall of the corrugated pipe. The top surface of each external wall corrugated ring is provided with small wave trough, and pierce is arranged at the position where the wave trough is positioned. In the present invention, after the forming of the tubular goods, the pressure difference between the corrugated ring and atmospheric pressure can be adjusted through the pierce of the external wall corrugated ring, and the service performance of the tubular goods will not be influenced. Because the pierce is arranged only on the external wall corrugated ring, water leak phenomenon will not occur. Compared with the tubular goods without pierce, the physical property test of the tubular goods which has the same Kilogram / Meter represents that the HDPE tubular goods with pierce has flattening inner wall without influencing the annular rigidity, the annular flexibility, the falling weight impact test, and the service performance.

Description

technical field [0001] The invention generally relates to the field of plastic pipes, in particular to an online drilling method for HDPE double-wall corrugated pipes. Background technique [0002] In recent years, my country's plastic pipe industry has developed rapidly and its application fields have continued to expand. It has become one of the important industries in the national economy and is known as the blood vessel in the city. It has attracted more and more attention from governments at all levels and relevant departments. At the same time, the relevant national policy guidance has enabled the further promotion and application of plastic pipes. "National Chemical Building Materials Industry Tenth Five-Year Plan and 2010 Development Plan Outline", the Ministry of Construction's "Announcement on Issuing <The Ministry of Construction's Promotion and Application and Restriction and Prohibited Technology" (Ministry of Construction No. 218) and other related documents...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B26F1/24B26D5/30B29C47/26B29C47/08B29C47/88B29L24/00B29C48/09B29C48/13B29C48/18B29C48/335
CPCB29C47/0033B29C47/06B29C47/0023B29C48/09B29C48/13B29C48/18
Inventor 张建均王杰军
Owner 公元管道(上海)有限公司
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