Inner supporting device of pipeline buckling joint and full-bore buckling connection method

Abstract

The invention belongs to the technical field of pipe joints, and particularly relates to an inner supporting device of a pipeline buckling joint and a full-bore buckling connection method. The inner supporting device is used for carrying out full-bore buckling connection on the pipe joint and a pipeline, and is particularly suitable for non-reducing type buckling connection of an oil conveying middle-high pressure composite pipeline and the pipe joint. According to the main technical scheme, the inner supporting device comprises a supporting body arranged in a joint core pipe, wherein the surface of the supporting body is attached to the inner wall of the joint core pipe; the supporting body is formed by splicing two or more supporting strips; and the supporting strips are provided with wedge-shaped splicing faces. The inner supporting device is simple in structure and convenient to use, and is arranged in the pipe joint, so that mounting and dismounting are facilitated; and by means of the buckling connection method of the inner supporting device, the joint core pipe cannot be radially contracted when the pipe joint and the pipeline are connected in a buckling manner, full-bore connection is achieved, and the beneficial effects of being firm in connection, tight in sealing, smooth in conveying and high in safety performance are achieved.

Description

technical field [0001] The invention belongs to the technical field of pipe joints, and in particular relates to an inner support device and a full-diameter crimping connection method for pipe joints, which are used for full-diameter crimping connections between pipe joints and pipes, and are especially suitable for various high, Non-reducing buckle connection of medium and low pressure rubber and composite hoses and pipe joints. Background technique [0002] In petrochemical and hydraulic equipment, pipe joints are often connected with flexible rubber hoses or composite hoses to achieve the purpose of connecting and transporting media or transmitting power; generally, the buckle connection method is used, that is, a processed joint core tube Insert it into the pipe body, rely on the radial contraction force of the crimping machine to squeeze the joint jacket, so that the jacket and the core tube are deformed, so that the tube body and the joint core tube are fastened. Most ...

AI Technical Summary

Problems solved by technology

[0002] In petrochemical and hydraulic equipment, pipe joints are often connected with flexible rubber hoses or composite hoses to achieve the purpose of connecting and transporting media or transmitting power; generally, the buckle connection method is used, that is, a processed joint core tube Insert it into the pipe body, rely on the radial contraction force of the crimping machine to squeeze the joint jacket, so that the jacket and the core tube are deformed, so that the tube body and the joint core tube are fastened. Most of the flexible hoses used now are rubber hoses or composite pipes , the structure of the pipe wall is complex, thick, and hard. Therefore, it is necessary to significantly increase the radial shrinkage force of the crimping machine to improve the crimping effect when crimping the connection. However, in actual production, it is often difficult to accurately control the mechanical force. It often causes the radial shrinkage of the joint core tube, which causes a large error between the effective diameter of the joint after crimping and the nominal diameter of the pipe body, and the joint is prone to breakage, prolapse, leakage or eddy current phenomenon when the pipe is in use. , which greatly affects the safety performance of the pipeline

Images