Metal layer sealing method, composite pipe and pipe connecting structure
A connection structure and composite pipe technology, which is applied in the direction of pipeline connection layout, pipe/pipe joint/fitting, coating, etc., can solve the problems that the metal layer cannot be completely sealed, the composite pipe expands, and the pipe bursts, etc.
Inactive Publication Date: 2019-03-08
RIFENG TECH CO LTD +2
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Problems solved by technology
In the composite pipe, it is necessary to prevent the metal layer in the middle from contacting with water. The metal layer will rust and corrode when it contacts with water, which will lead to the separation of the metal and the plastic layer, causing quality problems such as expansion and bursting of the composite pipe.
[0003] When the traditional composite pipe is connected with the pipe fittings, it is necessary to seal the metal layer on the end face at the bottom of the U-shaped groove of the pipe fitting so that the water does not come into contact with the metal layer. Failure to insert the tube in place will prevent the metal layer from being completely sealed and there is a risk that the metal layer will come into contact with water
Method used
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[0026] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific implementation methods. It should be understood that the specific embodiments described here are only used to explain the present invention, and do not limit the protection scope of the present invention.
[0027] It should be noted that when an element is referred to as being “fixed” to another element, it can be directly on the other element or there can also be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and similar expressions are used herein for purposes of illustration only and are not intended to represent the only embodiments.
[0028] Unless otherw...
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The invention relates to a metal layer sealing method, a composite pipe and a pipe connecting structure, and discloses a metal layer sealing method. The sealing method comprises the following steps that a metal layer at the end of the composite pipe is removed, and a filling groove is formed in the end of the composite pipe; and the end of the composite pipe is heated, so that a plastic layer at the end of the composite pipe is in a molten state, and the filling groove is sealed. The composite pipe comprises a first plastic layer, a second plastic layer and the metal layer; the first plastic layer and the second plastic layer are arranged in a spaced mode; the metal layer is arranged between the first plastic layer and the second plastic layer; the first plastic layer and / or the second plastic layer are used for sealing the metal layer after being heated into a molten state. The pipe connecting structure comprises the composite pipe and a pipe fitting, and the composite pipe is arranged in the pipe fitting in a penetrating mode.
Description
technical field [0001] The invention relates to the technical field of pipe fittings, in particular to a metal layer sealing method, a composite pipe and a pipe fitting connection structure. Background technique [0002] The inner and outer layers of the composite pipe are plastic layers, and the middle layer is a metal layer. The composite pipe not only has the characteristics of good bending resistance and pressure resistance of metal, but also has the characteristics of good corrosion resistance of plastic, smooth inside and not easy to breed bacteria. In the composite pipe, it is necessary to prevent the metal layer in the middle from contacting with water. The metal layer will rust and corrode when in contact with water, resulting in the separation of the metal and plastic layers, causing quality problems such as expansion and bursting of the composite pipe. [0003] When the traditional composite pipe is connected with the pipe fittings, it is necessary to seal the met...
Claims
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Patent Timeline
Login to View More IPC IPC(8): F16L58/10F16L9/147F16L47/02
CPCF16L9/147F16L47/02F16L58/10
Inventor 周龙飞林细勇刁振彬邱邦龙李茜民何旺枝
Owner RIFENG TECH CO LTD