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Aluminum-plastic composite pipe pressure-resistant and anti-leakage piping system

A technology of aluminum-plastic composite pipes and leakage pipes, which is applied in the direction of pipes/pipe joints/fittings, sealing surface connections, passing components, etc., can solve problems such as leakage and poor sealing effect, and achieve loosening prevention, good sealing, and guarantee Effects on Reliability and Stability

Active Publication Date: 2018-01-19
张天林
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The composite pipe is fixed on the pipe joint by the compression force exerted by the nut, which has a poor sealing effect and there is a risk of leakage after the nut is loosened

Method used

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  • Aluminum-plastic composite pipe pressure-resistant and anti-leakage piping system
  • Aluminum-plastic composite pipe pressure-resistant and anti-leakage piping system
  • Aluminum-plastic composite pipe pressure-resistant and anti-leakage piping system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Example 1: See attached Figure 1-3 , The present invention provides an aluminum-plastic composite pipe pressure-resistant and anti-leakage pipeline system. The pipeline system includes an improved aluminum-plastic composite pipe 3 and a matching pipe connection device. The key is that the pipe connection device includes at least one end and The tapered pipe joint 1 matched with the flared end of the improved aluminum-plastic composite pipe 3 and the lock nut 2 threadedly connected with the tapered pipe joint 1 will be improved by the double-cone sealing surface self-locking structure formed in the pipe connecting device The flared end of the aluminum-plastic composite pipe 3 is compressed in parallel to form a pressure-resistant and leak-proof pipeline structure.

[0023] The structure of the tapered pipe joint 1 includes a tapered sealing end 1-1 that matches the flared end of the aluminum-plastic composite pipe 3, an external threaded connection portion 1-3 that matches...

Embodiment 2

[0033] Example 2: See attached Figure 4 , The difference from the first embodiment is that a front lock nut 5 is provided between the tapered pipe joint 1 and the lock nut 2. The lock nut 2 and the front lock nut 5 share the external thread connecting portion 1-3. In the specific installation process, first install the front lock nut 5 on the tapered pipe joint 1. After the lock nut 2 compresses the composite pipe, then 7 rotate the front lock nut 5 to make the front lock nut 5 It is pressed against each other with the lock nut 2 to prevent the lock nut 2 from loosening.

Embodiment 3

[0034] The third embodiment: the difference from the second embodiment is that only the lock nut 2 and the front lock nut 5 are provided.

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PUM

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Abstract

The invention discloses a pressure-resisting leakage-prevention pipeline system of a polyethylene-aluminum compound pipe, and belongs to the technical field of compound pipe connecting. The pipeline system comprises an improved polyethylene-aluminum compound pipe and a pipe connecting device matched with the improved polyethylene-aluminum compound pipe and is characterized in that the pipe connecting device internally comprises a conical pipe joint with at least one end matched with the flared end of the improved polyethylene-aluminum compound pipe and a locking nut in threaded connection with the conical pipe joint; by means of a double-conical-seal-face self-locking structure formed in the pipe connecting device, the flared end of the improved polyethylene-aluminum compound pipe is in advanced compressing to form a pressure-resisting leakage-prevention pipeline structure; and the system has the beneficial effects that a spiral self-locking groove in the locking nut is matched with a spiral sealing groove to form the self-locking structure of the compound pipe, loosening of the compound pipe is prevented effectivley, grooves, in the positive direction and the negative direction, in the inner wall of the locking nut and the inner wall of a locking conical sleeve can effectively prevent the locking nut obtained after the whole pipe connecting device is mounted from loosening, and reliability and stability of long-time use of the compound pipe after connection are ensured.

Description

Technical field [0001] The invention belongs to the technical field of composite pipe connection, and is specifically a pipeline system formed by connecting an aluminum-plastic composite pipe and a pipe connection device. Background technique [0002] With the development of technology, plumbing pipes are converted from metal pipes to composite pipes. The composite pipe is a new generation of pipe material formed by combining aluminum, copper, steel and other materials with inner and outer layers of plastic, nylon or special synthetic materials. Aluminum-plastic composite pipes have become the first choice pipe combination material for daily life and some industrial occasions because of their excellent corrosion resistance and good deformation adaptability. [0003] At present, the above-mentioned joints for aluminum-plastic composite pipes often adopt a clamp-on type and a nut-bite type structure. Among them, the clamp-type joint needs to be installed with special pressure tongs...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16L19/08F16L19/02
CPCF16L19/0225F16L19/08
Inventor 张天林郝凯风
Owner 张天林