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How much do you know about welding bellows

How much do you know about welding bellows

Mar. 05, 2021


How much do you know about welding bellows

Welded bellows is a new type of component which is rising at home and abroad in recent years. It can be used as sensitive element, sealing element, isolation medium, pipeline connection and temperature compensator. In addition to the advantages of pressure resistance, temperature resistance, corrosion resistance and good sealing performance, it has two outstanding advantages over the traditional corrugated pipe: large deformation and long service life. 

Welded bellows is a new type of component which is rising at home and abroad in recent years. It can be used as sensitive element, sealing element, isolation medium, pipeline connection and temperature compensator. In addition to the advantages of pressure resistance, temperature resistance, corrosion resistance and good sealing performance, it has two outstanding advantages compared with the traditional corrugated pipe: large deformation and long service life. The welded bellows is a kind of metal pipe with high bending and expansion made by precise welding with many thin hollow diaphragms formed by stamping. Its composition is that two hollow diaphragms are concentric The inner edge is welded to form a diaphragm pair in a circular way, and then the outer edges of multiple diaphragm pairs are welded together to form a corrugated section, and then the metal at both ends and the end plate are welded together to form a bellows group. In this way, the reciprocating motion can be performed with other moving parts according to the external needs.

With the development of science and technology, the application field of welded bellows is expanding day by day. The main use of welded bellows is: as the detection element of control mechanism, transmitter or regulator, it can also be used as the measuring element of temperature, pressure and liquid level, as well as various sealing and energy transfer components.

Welded bellows not only can be used as measuring elements, but also can be used as sealing, connecting, compensating and isolating elements. It has a wide application prospect in many fields.

1.Instrument Industry

Welded bellows are mainly used as pressure measuring elements in measuring and controlling instruments, which can replace bellows string. The welded bellows can also be used as volume compensation element in gyroscope, sealing isolation element in regulating valve, flexible coupling and pressure switch.

2.Aerospace

Welded bellows are also used in aviation and aerospace. In addition to some instruments used in aircraft, welded bellows are also used in parachute automatic release pressure regulator. In addition, it can also be used as a shaft sealing door on a rocket engine. 

3.Electronic industry and other industries

Welded bellows are also used in electronic devices. For example, in the klystron of satellite communication ground station, micro welded bellows with outer diameter of 10 mm, inner diameter of 5 mm and wall thickness of 0.05 mm are used. It has been used as vacuum sealing device, axial connector, expansion joint, oil reservoir, accumulator and so on. 

 

How much do you know about welding bellows


 

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