Types of telescopic welded bellows

Writer： admin Time：2021-09-08 22:12 Browse：℃

Types of bellows for telescopic welded bellows Bellows mainly include metal bellows, corrugated expansion joints, corrugated heat exchange tubes, diaphragm diaphragms and metal hoses. Metal bellows are mainly used to compensate pipeline thermal deformation, shock absorption, and absorb pipeline settlement deformation. It is widely used in petrochemical, instrumentation, aerospace, chemical, electric power, cement, metallurgy and other industries. Plastic and other corrugated pipes play an irreplaceable role in the fields of medium transmission, power threading, machine tools, and home appliances. Bellows: A pressure measuring elastic element in pressure measuring instruments. It is a cylindrical thin-walled corrugated shell with multiple transverse corrugations. The bellows is elastic and can produce displacement under the action of pressure, axial force, transverse force or bending moment. Bellows are widely used in instruments and meters, and their main purpose is to convert pressure into displacement or force as a measuring element of pressure measuring instruments. The wall of the corrugated tube is thinner, and the sensitivity is high, and the measurement range is from tens of Pa to tens of MPa. In addition, the bellows can also be used as a sealing isolation element to separate the two media or prevent harmful fluids from entering the measuring part of the device. It can also be used as a compensating element to compensate for the temperature error of the instrument using the variability of its volume. Sometimes it is also used as an elastic joint of two parts. Corrugated pipes can be divided into metal corrugated pipes and non-metallic corrugated pipes according to their constituent materials; according to their structure, they can be divided into single-layer and multi-layers. There are many applications of single-layer corrugated pipes. The multi-layer corrugated pipe has high strength, good durability and low stress, and is used in important measurements. The material of the bellows is generally bronze, brass, stainless steel, Monel and Inconel.