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Unraveling the Operating Principle of a Gas Accumulator

When exploring the working principle of a Gas Accumulator (also commonly known as an air cushion), we can analyze it from multiple perspectives. The following is a detailed explanation of the working principle of gas accumulators:

Basic working principle:
The working principle of a gas accumulator is mainly based on the pressure and flow characteristics of the gas. When gas is injected into the accumulator, gas molecules collide with each other, resulting in pressure. This pressure causes the gas molecules below the cushion to be pushed upwards, forming a force to support the object.
When external pressure is applied or an object is loaded onto an air cushion, the gas inside the cushion will be compressed. Due to the properties of gas that can change shape and elasticity, an air cushion will generate a force equal to pressure to support or reduce the pressure on an object.
Steady state and dynamic working principles:
Steady state working principle: When the air cushion is subjected to a uniform static load, the gas is in a stable state, the pressure is evenly distributed, and the pressure in contact between the air cushion surface and the object surface is averaged.
Dynamic working principle: When the air cushion is subjected to dynamic loads or changes in external forces, gas will flow, causing the pressure inside the air cushion to adjust according to the motion state and load changes, in order to provide better shock absorption and support effects.
Application and classification of air cushion:
Gas accumulators are widely used in various fields, such as air cushion transportation platforms, air cushion ships, and air cushion trains.
According to the formation and maintenance methods of air cushions, they can be divided into two types: peripheral jet type and booster chamber type. The peripheral jet type air cushion uses a fan to drive air into the airway, which is sprayed out by the peripheral nozzles and bent outward to form a jet type air curtain; The pressurized chamber air cushion, on the other hand, forms a larger chamber between the spacecraft and the operating surface, which is driven by a fan to generate a pressurization effect.
Parameters and performance:
The performance of a gas accumulator is influenced by multiple parameters, such as air pressure, gas flow rate, and lift height. By adjusting these parameters, the load-bearing capacity and shock absorption effect of the air cushion can be changed.
The selection of materials and structural design are also important factors affecting the performance of air cushions.
Special application: Anti pressure ulcer cushion:
In the medical field, there is a special type of anti pressure ulcer air cushion that alternates between odd and even trachea timing to inflate and deflate, changing the contact surface between the body and the bed surface at regular intervals, effectively dispersing pressure from various parts of the body, and avoiding the formation of skin pressure ulcers. This type of air cushion also has an automatic turning function, which can promote the squeezing and phlegm elimination of the patient’s lungs, improve blood circulation, and increase activity.
In summary, the working principle of a gas accumulator is mainly based on the pressure and flow characteristics of the gas. By adjusting relevant parameters and structural design, different load-bearing and shock absorption effects can be achieved. At the same time, there are various types and special designs of gas accumulators depending on the application field.



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