Axial cold-extruding type pipeline connection device with trough
A connecting device and cold extrusion technology, applied in the direction of non-removable pipe connection, pipe/pipe joint/pipe fitting, passing element, etc., can solve the problem of low connection strength, poor reliability, unable to meet the high connection strength requirements of pipeline connection, etc. problem, to achieve the effect of improving connection strength, improving connection strength and sealing
Inactive Publication Date: 2012-09-05
CHINA AERO POLYTECH ESTAB
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Problems solved by technology
[0002] At present, the known connection method of cold extruded pipelines is the external crimping type. There are only bushing joints without external pressure sleeves. The connection is directly crimped by the outside through tools. The plastic deformation of the plastic deformation keeps the interference, and the connection strength mainly depends on the friction between the connecting parts. Therefore, the connection strength is small and the reliability is poor. It can only be used for pipeline connections with low connection strength requirements and cannot meet High connection strength requirements for pipeline connections on aviation products
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[0011] See attached Figure 1~3 As shown, this kind of axial cold extrusion pipeline connection device includes two external pressure sleeves 1 and bushing joints 2, the external pressure sleeve 1 is a cylinder with a central through hole 13, the cylinder There is an annular protruding step on the outer edge of one end to form a load-bearing shoulder 11, and the central through hole 13 of the external pressure sleeve 1 is open at the end with the load-bearing shoulder 11, and the opening forms a bushing joint 2's connector lead-in end 12;
[0012] The bushing joint 2 is also a cylinder with a central hole 23, and a section of thin-walled tube 24 is provided at both ends of the cylinder. The thin-walled tube 24 forms a tapered slope toward the middle of the bushing joint 2 to form an external pressure sleeve. The leading-in end 22 of the jacket, the leading-in end 22 has three annular grooves on the inner wall of the middle part of the bushing joint 2 to form a two-tooth and t...
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The invention belongs to the technical field of connection, and relates to an axial cold-extruding type pipeline connection device with a trough, and the connection device is used for connection of aviation pipelines. The connection device comprises two external pressure pipe sleeves and a bush-type joint; the external pressure pipe sleeve is a cylinder with a central through hole; the inner wall of the bush-type joint is provided with three annular grooves; and the outer wall of the bush on the annular groove is thickened to form a micro bulge. During installation, conduits are respectively placed in the bush-type joint; as a certain interference exists between the external pressure pipe sleeve and the bush-type joint and a structure with two teeth and three troughs is partially processed on the inner surface of the bush-type joint, the contact position of the bush-type joint with two teeth and three troughs and the conduit deforms continuously, so that the bush-type joint and the conduit are tightly extruded and pipeline connection with a certain connection strength is formed. Therefore, the connection strength of pipeline connection is enhanced and the operating requirements of pipeline connection requiring high voltage withstand and high strength is met for aviation products.
Description
technical field [0001] The invention belongs to the technical field of connections, and relates to a grooved axial cold extrusion type pipeline connection device used for the connection of aviation pipelines. Background technique [0002] At present, the known connection method of cold extruded pipelines is the external crimping type. There are only bushing joints without external pressure sleeves. The connection is directly crimped by the outside through tools. The plastic deformation of the plastic deformation keeps the interference, and the connection strength mainly depends on the friction between the connecting parts. Therefore, the connection strength is small and the reliability is poor. It can only be used for pipeline connections with low connection strength requirements and cannot meet High connection strength requirements for pipeline connections on aviation products. Contents of the invention [0003] The purpose of the present invention is to propose a groove...
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IPC IPC(8): F16L13/16
Inventor 文放林晶王宗武李俊昇焦志强
Owner CHINA AERO POLYTECH ESTAB