Calipers flange welded type bellows

Abstract

The invention relates to a calipers flange welded type bellows, which comprises the bellows, connecting ends arranged at the two ends of the bellows, and calipers flanges connected with the connecting ends, wherein the connecting ends are provided with straight pipes; a welding step is arranged at one end of each straight pipe, and the other ends of the straight pipes are connected with the calipers flanges; seam parts of the calipers flanges and the straight pipes are welded to form a whole through argon arc welding; clamping platforms used for being connected with the end parts of the other ends of the straight pipes and inner ring-shaped grooves are arranged on the inner sides of the calipers flanges; and an outer ring-shaped groove is arranged at the end part of one end of each calipers flange. The calipers flange welded type bellows has the advantages that through connecting the calipers flanges with the straight pipes and welding the calipers flanges and the straight pipes through argon arc welding, the welding and melting evenness and uniformity are realized during welding, the tension contractility of the bellows is increased and the quality yield is improved; and the calipers flange welded type bellows has the advantages of convenience and rapidity in the whole mounting process, safety, reliability, low maintenance cost, steadiness in connection and high sealing performance, the welding firmness is increased, vacuum surface deformation caused by the welding is avoided, and the calipers flange welded type bellows is suitable for volume production.

Description

technical field [0001] The invention relates to a bellows, in particular to a caliper flange welded bellows. Background technique [0002] As sensitive components, shock absorbing components, compensation components, sealing components, valve components and pipeline connectors, metal bellows are widely used in automatic control and measuring instruments, vacuum technology, machinery industry, electric power industry, transportation and atomic energy industry and other fields . The existing metal bellows connection methods are divided into flange connection, welding, threaded connection, and quick joint connection. Small-diameter metal hoses are generally connected by threaded joints and quick joints, and larger-diameter metal hoses are generally connected by flange connection and welding. [0003] The connection structure of each bellows in China is relatively complicated, which affects the mass production of bellows, especially the existing welded metal bellows. The main p...

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Problems solved by technology

[0003] The connection structure of each bellows in China is relatively complicated, which affects the mass production of bellows, especially the existing welded metal bellows. The main purpose of welded metal bellows in China is that the equipment requires a vacuum environment or has vibration isolation. Environment, or special gas isolation, is also often used in semiconductor equipment, optoelectronic equipment, vacuum precision instruments, exhaust equipment, analytical instruments, nuclear energy-related equipment, accelerators, medical equipment, inspection equipment, etc. At present, there is no manufacturing technology in China. The hose imported from abroad is welded and repaired in China, but when the bellows and the joint are welded, it is easy to cause uneven welding melting, poor sealing, more complicated structure, inconvenient installation, high engineering cost and high defective rate, which affects the corrugation Tube tensile shrinkage and service life of bellows

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