Classification and working principle of voltage regulators
2025-08-26
1. Classified by medium
Gas regulator
Application: Oxygen, nitrogen, hydrogen, natural gas, etc.
Characteristics: High sealing requirements are required to prevent gas leakage (such as the use of grease in oxygen regulators).
Liquid regulator
Application: Water, oil, hydraulic oil, etc.
Characteristics: Need to consider liquid viscosity and corrosiveness (such as hydraulic system pressure regulating valves).
2. Classify by structure
Direct acting regulator
Principle: By directly balancing the medium pressure through spring force, the valve disc is driven to open and close.
Features: Simple structure, low cost, but low precision (suitable for civilian gas stoves).
Pilot operated regulator
Principle: By controlling the opening of the main valve through a pilot valve, high-precision regulation can be achieved.
Features: Fast response speed, stable output pressure (suitable for industrial high-pressure gas systems).
3. Classify by function
Single-stage voltage regulator
Principle: Reduce pressure to the target pressure in one go.
Features: Simple structure, but the output pressure is greatly affected by input pressure fluctuations (such as laboratory nitrogen supply).
Dual stage voltage regulator
Principle: Two levels of pressure reduction, first level of coarse adjustment, and second level of fine adjustment.
Features: More stable output pressure (such as acetylene gas regulator for welding).
Back pressure regulator
Principle: Maintain a constant return oil or air pressure in the system (such as a hydraulic system back pressure valve).
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