Working principle of diaphragm accumulator

A diaphragm accumulator is a device used to store liquid or gas energy, and its working principle is based on the elastic deformation of the diaphragm. The following is the basic working principle of a diaphragm accumulator:

Structural composition: Diaphragm accumulators typically consist of two opposing membranes or a membrane and a container, forming a sealed isolation space between them. This diaphragm is usually made of elastic materials, such as rubber or synthetic rubber.

Storage fluid: The container of a diaphragm accumulator is filled with liquid or gas, which is the medium that needs to store energy. In hydraulic applications, liquids such as oil are commonly used as media, while in pneumatic applications, gas is used.

Compression and expansion: When external pressure is applied (an increase in liquid or gas), the diaphragm undergoes elastic deformation, resulting in a decrease in the volume of the storage medium. This is achieved through the elasticity of the diaphragm. When the external pressure decreases, the diaphragm returns to its original state, increasing the volume of the storage medium.

Energy storage: The key to diaphragm energy storage lies in the ability of its elastic membrane to store elastic potential energy. When the storage medium is compressed, potential energy is stored in the form of an elastic film. When the stored energy needs to be released, the pressure decreases, and the elastic film pushes the medium to expand again, releasing the stored energy.

Application: Diaphragm accumulators are commonly used in hydraulic and pneumatic systems to smooth fluid pressure fluctuations, absorb shocks and vibrations in the system, and provide a way to store energy for release when needed. The application areas of this device include automotive braking systems, hydraulic machinery, air conditioning systems, etc.

Overall, diaphragm accumulators store and release energy by utilizing the deformation of elastic membranes, thereby playing a role in smoothing pressure, reducing vibration and impact in hydraulic and pneumatic systems.