Pressure balance elements How to balance pressure - Wuxi Sinceriend New Material Technology Co., Ltd.

1. Pressure balance based on balanced piston
In some pressure systems, pressure balance elements with balanced piston structure are used. The piston is placed in a specific cavity, and its two sides are connected to different pressure areas. When there is a difference in pressure on both sides, the pressure difference will act on the piston. Since the piston area is fixed, according to the pressure calculation formula F=pS (F is pressure, p is pressure, and S is the force area), the pressure difference will drive the piston to move. For example, in a hydraulic system, if the oil inlet pressure is higher than the oil outlet pressure, the piston will move toward the oil outlet until the pressure on both sides tends to balance under the action of the piston. At this time, the piston stops moving, achieving pressure balance and ensuring stable operation of the system.
2. Pressure balance with bellows
A bellows is a pressure balance element with retractable characteristics. It is usually made of metal material and has a corrugated structure. When one end of the bellows is connected to the high-pressure area and the other end is connected to the low-pressure area, the high pressure will compress the bellows, and the low pressure will cause it to stretch. In this process, the bellows adjusts the size of the internal space through its own elastic deformation, thereby adjusting the pressure on both sides. For example, in the pressure regulating device of some precision instruments, the bellows can keenly sense the pressure change, respond quickly by stretching and contracting, reduce the pressure difference, reach a balanced state, provide a stable pressure environment for the instrument, and ensure the accuracy of measurement or work.
3. Using the pressure balance of the diaphragm
The diaphragm is used as a pressure balancing element, and its elastic properties are used to balance the pressure. The diaphragm separates two pressure areas. When the pressure is different, the diaphragm will bend to the side with lower pressure. For example, in the air pressure control system, the air pressure on both sides of the diaphragm is different, and the diaphragm bends and deforms, driving the mechanical structure connected to it, such as valves, to adjust the gas flow and thus change the pressure. When the pressure on both sides is equal, the diaphragm returns to its initial position to maintain pressure balance, ensure the stability of the pressure in the system, and avoid the normal operation of the equipment due to pressure fluctuations.
If you are interested in the actual application scenarios and specific design details of one of the above pressure balancing elements, or want to know more about other types of pressure balancing elements, please continue to ask questions.