Chamber type limit self-tightening type seal

A self-tightening and limiting technology, applied in the direction of engine seals, engine components, mechanical equipment, etc., can solve the problem of poor self-limiting and positioning functions of box-type sealing devices, reducing the reliability of box-type equipment and the convenience of operation. It can reduce the processing difficulty and processing requirements, the structure is simple, and the processing requirements are low.
CN101216104AInactive Publication Date: 2008-07-09่‚–ๆ ‹
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Patent Information

Authority / Receiving Office
CN ยท China
Patent Type
Applications(China)
Current Assignee / Owner
่‚–ๆ ‹
Publication Date
2008-07-09
Estimated Expiration
Not applicable ยท inactive patent

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Abstract

A box-type limited self-tight sealer belongs to a sealing device. A rectangular Y-shaped groove and a trapezoid gasket are arranged the a flange surface of a flange pair. The trapezoid gasket is positioned inside the rectangular Y-shaped groove of the flange. The sealer has the advantages that: 1. the sealer changes the shapes of the flange surface and a seal ring, changes the stress mode of the seal ring, and realize the position limitation while improving the sealing property; 2. one flange surface is provided with the rectangular Y-shaped groove and the other one is planar or curved; 3. the rectangular Y-shaped groove is processed by the conventional milling machine, or processed by welding a flat plate with a solder or by spot welding, so as to greatly reduce the difficulty and requirement for processing the flange surfaces; 4. the rectangular Y-shaped groove of the flange surface has large frictional force and ensures good limiting effect and easy installation; 5. the structure is simple, the operation is simplified, the cost is reduced and the sealing effect is improved; 6. the sealer has wider application range in size and pressure without the limitation of seal ring size; and 7. the sealer has simple structure, easy fabrication and small pre-tightening force of screws.
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Description

technical field

[0001] The patent of the present invention relates to a sealing device, especially a box-type position-limiting self-tightening seal. Background technique

[0002] At present, the sealing forms commonly used in pressure vessels are divided into forced seals, semi-self-tightening seals and self-tightening seals according to the sealing methods: Among them: mandatory seals include: flat gasket seals, Kazali seals and octagonal gasket seals; semi-self-tightening seals include: : Double-cone seal; self-tightening seals include: wedge seal, combined seal that is Wood seal, hollow metal O-ring seal, C-ring seal, B-ring seal, triangular pad seal, octagonal pad seal and flat pad self-tightening seal. The various sealing devices mentioned above use forced, semi-self-tightening or self-tightening methods to seal the area to be sealed under the mutual extrusion of the contact surfaces of the flanges and through the deformation of the gasket.

[0003] The following prob...

Claims

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