Bourdon tube pressure gauge is an important category of pressure gauge, and is also a widely used and widely used type of pressure gauge in industrial production. Bourdon tube pressure gauge is common with single-coil spring structure. In the fields of chemical industry, metallurgy and other industrial production, bourdon tube pressure gauge is a commonly used pressure detection instrument. If you want to effectively deal with the problems of the pressure gauge in the measurement and detection, you must first understand the working principle of the bourdon tube pressure gauge.
The measuring unit of bourdon tube pressure gauge is pressure, which is an important parameter in many production projects. In production, pressure is usually referred to as pressure. Pressure monitoring is indispensable in oil pipelines, pressure vessels and other work occasions. Pressure calculation formula: P=F/S. Where, F is the force of the object, in N; S is the stress area, in m2. Objects exist in three forms: solid, gaseous and liquid, of which liquid and gas are collectively referred to as fluid. The pressure applied to the liquid will be evenly distributed to all points of the fluid, and the elasticity of the gas will make its pressure and volume inversely proportional, that is, the larger the volume, the smaller the pressure generated. The pressure of the fluid will be transferred to the side wall of the container by the fluid. In production practice, the equivalent property can be used to measure the pressure generated by the object, and the device used for pressure detection is the pressure gauge.
The bourdon tube pressure gauge uses the pressure generated by the fluid to transmit through the elasticity of the spring. The pressure is transmitted through the fixed end of the spring to make the central axis shift on the pointer, and then the pointer points to the corresponding data, thus indicating the magnitude of the generated pressure. The core component of the pressure and displacement transformation is the spring pipe. After the spring pipe is pressurized, the shape becomes circular under the influence of the pressure of the elliptical section, and the front and back arc lengths are the same. In order to increase the range of the pressure gauge, the multi-coil spring tube structure can be used, and its working principle is the same as that of the single-coil spring tube. The material selection of the spring tube is determined by the nature of the medium and the range of pressure measurement. When the pressure is less than 20 MPa, the phosphor copper material is usually used, and when the pressure is more than 20 MPa, the stainless steel or alloy steel material is used. In addition, the measurement must be reasonably avoided according to the measured medium. For example, when measuring the ammonia medium, the spring tube must be made of stainless steel.
