Thread Content
After the equipment is manufactured, it often requires a voltage withstand test. A pressure gauge is used during pressure testing; have you all noticed that the connector between the pressure gauge and the equipment is curved? Why is the pipe below the pressure gauge bent? The elbow pipe below the pressure gauge is called the pressure gauge buffer tube; workers, out of habit, refer to it as the pressure gauge pipe elbow. It comes in two forms: one is an annular bend, and the other is a U-shaped bend. The latter name is more intuitive and appropriate. This seemingly unremarkable design actually plays a significant role; it is a design based on principles of engineering and science, and its impact cannot be underestimated, which is evident in the following two aspects. On the one hand, it is to protect the pressure gauge from being damaged due to excessive pressure; on the other hand, it is to ensure the accuracy of the pressure gauge’s readings. It is understood that abroad, what serves a similar purpose to the bend in pressure gauges is a pressure relief hole; through these simple designs, it is possible to provide better protection for the pressure gauge and ensure its proper operation. A pressure buffer tube, as the name suggests, is capable of buffering pressure. The substances transported through pipelines can be either liquids or gases, and both types of substances possess fluid pressure. When the pressure of the medium in the pipeline is too high, or when there are large fluctuations in the pressure of the substance being transported, without this pressure buffer tube, that pressure will act directly on the pressure gauge. When the fluctuations are slight, they only cause a deviation in the gauge reading, resulting in inaccurate values ； In severe cases, the pressure gauge is directly damaged, causing maintenance and replacement issues in subsequent operations. The function of bending the pressure gauge tube is to protect the pressure gauge from damage caused by various controllable factors; it can be said to be a testament to human ingenuity.