Bellows for sensorsThe manufacturer believes that the corrugated pipe is a tubular elastic sensitive element connected by foldable corrugated sheets along the folding and stretching directions. Bellows are widely used in instrumentation, mainly as the measuring element of pressure measuring instruments, converting pressure into displacement or force. The bellows wall is thin and the sensitivity is high. Its open end is fixed, and the sealing end is in a free state. The elasticity is increased by using an auxiliary coil spring or reed. When working, under the action of internal pressure, it is stretched along the length of the pipeline, so that the movable end produces a pressure-related displacement. The movable end drives the pointer to directly indicate the pressure. Bellows are often combined with displacement sensors to form a pressure sensor, whose output is electricity and sometimes used as an isolation element. Since the expansion of the bellows requires a large volume change, its response speed is lower than that of the Baudon tube. The bellows is suitable for measuring low pressure.

Bellows for sensors manufacturers believe that pressure resistance is an important parameter of bellows performance. At room temperature, the larger static pressure that the bellows can withstand without plastic deformation of the waveform is the larger pressure of the bellows. Normally, the bellows work under a certain pressure (internal pressure or external pressure), so it needs to withstand this pressure during the entire working process without plastic deformation.

Bellows for sensors manufacturers believe that the pressure resistance of bellows actually belongs to the strength category of bellows. The key to the calculation is stress analysis, that is, the stress analysis of the bellows wall. As long as the stress at the larger stress point on the bellows wall does not exceed the yield strength of the material, the pressure on the bellows cannot reach its pressure resistance.

Under the same other conditions, the stability of the same bellows under external pressure is better than that under internal pressure, so the allowable pressure resistance under external pressure is higher than that under internal pressure.

　　Bellows for sensorsThe manufacturer believes that when the two ends of the bellows are fixed, if sufficient pressure is introduced into the inner cavity of the bellows, the wave crest of the bellows may be damaged by explosion. When the bellows starts to burst, the pressure inside the bellows is called the burst pressure. Burst pressure is a parameter that characterizes the larger compressive strength of the bellows. In the whole working process, the working pressure of the bellows is far less than the burst pressure, otherwise the bellows will be broken and damaged.

The bellows manufacturer of the sensor believes that when the ripple length is less than or equal to the outer diameter, the calculation result is very close to the actual burst pressure. The actual burst pressure of the slender bellows is much lower. The bursting pressure is about 3 to 10 times the allowable working pressure.

　　Bellows for sensorsThe manufacturer believes that the double-wall corrugated pipe is a new type of pipe that was first developed in Germany in the early 1980 s, with an annular outer wall and a smooth inner wall. Double-wall corrugated pipe has the characteristics of strong resistance to external pressure, low engineering cost and long service life. It is mainly used for large-scale water delivery, water supply, drainage, sewage discharge, exhaust, subway ventilation, mine ventilation and farmland irrigation with working pressure below 0.6MPa.

The above is the sensor with bellows manufacturers to explain some common sense of bellows for you.