What is the function of the cylinder? Calculation of cylinder force

What is the function of the cylinder

The function of the cylinder:Convert the pressure energy of compressed air into mechanical energy, and the driving mechanism makes linear reciprocating motion , swing and rotation motion.

1. The cylinder is a cylindrical metal part that guides the piston to perform linear reciprocating motion in the cylinder. The working fluid converts thermal energy into mechanical energy through expansion in the engine cylinder;the gas is compressed by the piston in the compressor cylinder to increase the pressure.

2. The casings of turbines, rotary piston engines, etc. are also usually called "cylinder". Application areas of cylinders: printing (tension control), semiconductors (spot welding machines, chip grinding), automation control, robots, etc.

The cylinder is the casing of the steam turbine. The main function of the cylinder is to isolate the flow-through part of the steam turbine (nozzle, partition, rotor, etc.) from the atmosphere to ensure that the steam completes the work process in the steam turbine. In addition, it also supports some stationary parts of the steam turbine (partition plates, nozzle chambers, steam seals, etc.), bears their weight, and also bears the thermal stress caused by uneven temperature distribution along the axial and radial directions of the cylinder.

Calculation of cylinder force

The calculation formula for cylinder pressure is: F=P*A-f. F: Cylinder output (kgf) A: Cross-sectional area (cm2) P: Used pressure (kgf/cm2) f: Friction resistance (kgf). Calculate the pressure and multiply it by the stressed area. The pressure is the pressure of the air source, and the force-bearing area is the area of ​​the piston.

Supercharger cylinder output calculation formula = Booster ratio * Air source pressure * Cylinder piston area = Cylinder piston area / Booster rod area * Air source pressure * Cylinder piston area, calculation The formula shows that the boost ratio is calculated by the cylinder piston area/boost rod area.

It also depends on your cylinder pressure. When I originally made it, I always adjusted it to 5 atmospheres. (Of course it can be larger, but there will be other problems if it is larger). With a diameter of 32mm, you can calculate the area of ​​the piston. Effective pressure is found by subtracting one atmosphere (air pressure) from 5 atmospheres. The effective pressure is multiplied by the area force. Of course, if you want to calculate accurately. Also consider the area of ​​the cylinder rod. In this way, the force when the cylinder extends and retracts is different. The difference is the product of effective pressure and cylinder rod cross-sectional area. But this product is small.

In actual calculations, gas and liquidThe cylinder piston area and boosting rod area of ​​the supercharged cylinder will not be expressed in the parameter table. The specific information is Consult the manufacturer for technical advice. Usually the cylinder selection manual provides thrust calculations for different types of cylinders. formula. And provides reference thrust for different diameters under different pressures. That should prevail.