High-pressure self-tightening flange

Abstract

The invention discloses a high-pressure self-tightening flange ZY, relating to a novel pipe connector, which comprises a sleeve joint, a clamping sleeve, a sealing ring and a Spherical bolt, characterized in that the tendon part and the lip of the sealing ring form a T-shape, and the two sets of clamping ribs form a strong integral with the pipe under the action of the clamping sleeve. The sealing cone of the two sets of sealing surfaces and the two lips of the T-shaped sealing ring form a seal respectively, and the advantages: 1. The main force of the sleeve is replaced by the main force of the bolt. Under the action of the sleeve, the sealing ring under the action of the sleeve is 360 o. With the pressure fluctuation, the lip of the T-type seal ring is elastically deformed. With the increase of the pressure, the seal specific pressure is increased, the traditional flange pressure is increased, the seal is lower than the pressure, that is, the self-close sealing effect is better, and it has the functions of -fatigue resistance, -vibration resistance, and temperature difference resistance. The sealing ring can be used repeatedly. The strength of the connection point is higher than that of the pipe parent material; 6. The Spherical bolt axis is set perpendicular to the pipe centerline.

Description

technical field [0001] The invention relates to a brand-new pipeline connection method, especially a pipeline connection widely used in the fields of petroleum, petrochemical, chemical industry, coal chemical industry, shipbuilding, metallurgy, aviation, aerospace, military affairs, national defense, synthetic materials and the like. Background technique [0002] Flanges are essential for industrial production devices, transportation engineering, aerospace, national defense, military and other equipment and pipelines, as well as connections between equipment, and they are also general-purpose parts that are in great demand. In the past, traditional flanges and pipes were generally connected, and the seal was realized by the local plastic extrusion deformation of the gasket. The reliability of the connection was poor, and the joints were prone to running, popping, dripping, and leaking problems. Therefore, accidents occurred frequently and a lot of time was needed. To repair ...

AI Technical Summary

Problems solved by technology

Since the axis of the connecting bolt is set parallel to the axial direction of the pipeline, the additional load of the pipeline system generated in the operating state will be directly borne by the connecting bolt, which will also affect the sealing performance

The sealing ring is generally harder than the flange, and the seal is formed by extrusion local plastic deformation, without the function of self-tightening and self-reinforcement, and the seal is easily invalidated by external force

[0005] At present, in the ship pipeline system, the traditional flange and threaded joints are mainly used. However, the pipeline connection of the high-pressure launch system, high-pressure oil circulation lubrication system, superheated steam system, and diesel engine system, due to vibration, Insufficient temperature stress and high pressure strength lead to many connection failures, frequent maintenance, decreased accuracy, difficult maintenance, long maintenance time, long-term safety hazards, frequent occurrence of safety accidents, and great harm to personnel and equipment

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