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How much do you know about the correct use of the temperature of the bellows?

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How much do you know about the correct use of the temperature of the bellows?

Release date:2018-03-01 Author: Click:

How much do you know about the correct use of the temperature of the bellows?


A bellows is a tubular elastic sensitive element that is connected in the direction of folding and telescopic direction with foldable wrinkles.

Bellows are widely used in instruments and instruments. The main purpose is to use the pressure measurement instrument as a measuring element to convert the pressure into displacement or force. The wall of the corrugated pipe is thin and the sensitivity is high. The measurement range is from dozens of PPA to dozens MPa lined CPVC fiberglass composite power cable tube. Its open end is fixed, the sealing end is in a free state and the auxiliary spiral spring or reed is used to increase the elasticity. Under the action of internal pressure, the work is extended along the length of the tube, so that the movement end produces a certain relationship with the pressure. The movable end leads the pointer directly to indicate the size of the pressure. Bellows are often combined with displacement sensors to form pressure sensors that output electricity, and sometimes used as isolation elements. Due to the extension of ripple tube for volume changes greatly, so the response speed of the Bourdon tube below. The bellows are suitable for measuring low pressure.

How much do you know about the correct use of the temperature of the bellows?

The temperature range of the metal bellows components is very wide, and is generally given before the design and manufacture of the elastic elements. Some special uses of the bellows, the inner cavity through the liquid oxygen (-196) or lower temperature of liquid nitrogen, the pressure up to 25MPa. The large bellows expansion joint (nominal diameter sometimes exceeds LM) for pipe connection is required to bear 4MPa, to withstand 400 degrees of temperature and has certain corrosion resistance. The temperature adaptability of the elastic element depends on the temperature resistance of the elastic material used. Therefore, according to the service temperature range of the elastic element, we choose the elastic material with suitable temperature and performance parameters to manufacture qualified corrugated pipe components lined with CPVC FRP power cable pipe.


内衬CPVC玻璃钢复合电力电缆管


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