Pipeline thread airtight connection method and device

Abstract

The defects that in the pipeline installation process, time cost, material cost and labor cost are high, pipeline sealing reliability is poor, and pipelines made of different materials can only be installed through different installation methods are mainly overcome. A pipeline thread airtight connection method is achieved by a pipeline thread airtight connection device and is completed by combining the pipeline thread airtight connection device, sealing gaskets, external thread pipes and set screws. The pipeline thread airtight connection method is characterized in that when the external thread pipes are screwed with the pipeline thread airtight connection device, the external thread pipes which are oppositely screwed into the pipeline thread airtight connection device are in airtight butt joint through the sealing gaskets, or the external thread pipes are in airtight connection with the pipeline thread airtight connection device. The pipeline thread airtight connection method is further characterized in that the external thread pipes and the pipeline thread airtight connection device are fastened together through the set screws, so that the long-term effect of pipeline airtight connection is ensured. The technical scheme is suitable for installation of water supply and heating pipelines of industry, agriculture, commerce, buildings, municipal administration, life, indoor parts and outdoor parts and is very wide in application.

Description

technical field [0001] A pipe thread airtight connection method and a connection device thereof described in the present invention relate to the technical field of pipe thread airtight connection. Background technique [0002] Pipe thread airtight connection technology is widely used in various fields of daily life and production, including household cold and hot water pipe connection and natural gas pipeline connection, outdoor drainage pipe connection and heating pipe connection, etc. There are two main types of traditional pipe thread connection methods: one is to add filler to the thread to achieve a sealed connection, and the other is to use flange connection or union. The screw connection method with filler is safe and reliable, but the connection speed is slow and the installation cost is high; the flange connection also has the problems of high installation cost and complicated procedures, and even welding is required to ensure its tightness; while the existing union...

AI Technical Summary

Problems solved by technology

The screw connection method with filler is safe and reliable, but the connection speed is slow and the installation cost is high; the flange connection also has the problems of high installation cost and complicated procedures, and even welding is required to ensure its tightness; while the existing union technology It is very easy to cause loosening and leakage of the wire connection during installation and use, so it is not suitable for outdoor use

With the wide application of PPR pipes and PVC pipes, glue bonding and in-line quick-connection technologies have emerged for quick-connection of pipes. However, due to the dependence on pipe materials, glue bonding technology and in-line quick-connection Applied in the environment and PPR and PVC pipes, the universal applicability is extremely limited

Therefore, no matter what kind of pipeline connection device and method is used, there are irreparable defects: the joint technology cannot avoid the loosening of the joint due to frequent rotation and vibration of the pipeline during installation or use, resulting in the failure of the sealing gasket and leakage Among them, the leakage of hose joints is still common; the labor cost and time cost of traditional threaded and filler connections are high; the joints of PVC pipes bonded by glue are damaged due to external pressure, vibration or insufficient uniformity of glue application or excessive temperature difference. Leakage is also common; in-line fittings can only be used on low pressure and PPR or smooth high cost tubing

The pipe thread connection method and its connection device introduced in the present invention solve the technical problems existing in the prior art, such as slow installation speed of pipe connection, high installation cost, poor reliability of anti-leakage, etc.

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