Inner-locking type tube fitting of connecting rod structure device

Abstract

The invention relates to an inner-locking type tube fitting of a connecting rod structure device, and the inner-locking type tube fitting is used as a sealing tube fitting. The inner-locking type tubefitting comprises a blocking plug (1), a locking ring (2), a fastening bolt (3), a connecting rod (4), a connecting handle (5), a driving plate (6), a pin (7), an O-shaped ring (8), a spiral base (9), a fixed bolt (10), a four-way tube fitting (11) and a dowel pin (12). The design idea of the inner-locking type tube fitting refers to discarding a conventional connecting way, and a unique structure is designed for locking and sealing inside. The inner-locking type tube fitting has the effects that: firstly, the inner-locking type tube fitting is good in sealing effect in a product, does not have outer leakage hidden danger, is safe and reliable, is self-locked by a device on the blocking plug, does not need to open a pin hole in a tube fitting flange, keeps the integral integrity of the tube fitting flange, avoids the outer leakage hidden danger, and is safe and reliable in use; secondly, manufacturing difficulty of the tube fitting is reduced; and thirdly, mounting is convenient and quick.

Description

technical field [0001] The invention relates to a plugging device in pipeline maintenance and emergency repair construction operations, in particular to an inner-locking pipe fitting of a connecting rod structure device. Background technique [0002] Pipeline blocking device is a component for emergency repair and sealing of pipelines conveying natural gas or fuel oil or other media. In the field of non-stop pipeline technology, in order not to stop the pipeline conveying medium during construction, it is usually erected on the side of the part that needs emergency repairs The temporary bypass pipe allows the medium to be transported temporarily through the bypass pipe. After the emergency repair is completed, after the emergency repair is blocked, it is transported through the repaired pipeline, and then the bypass pipe is closed. [0003] In the process of operation, a plugging device is required. The existing plugging device used in pipeline maintenance and repair constru...

AI Technical Summary

Problems solved by technology

The deficiencies in the use of this structural method are: 1. Multiple locking holes for locking pins need to be opened on the pipe fitting flange, which makes there are many sealing points on the pipe fitting flange, and there is a large leakage hidden danger; 2. It is difficult to manufacture, and multiple pin holes need to be made on the outer circle of the flange; 3. The installation process is slow, and the internal thread of the lock pin hole may be damaged due to improper use of the hexagon socket wrench, which affects the progress of the project

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