1. Differences in working principle:
(1) Working principle of gas booster pump:
A gas booster pump is a piston type booster pump that uses compressed air as the power source. When entering the air, the valve core of the booster gas control valve switches back and forth to work, controlling the booster valve piston to reciprocate at an extremely fast speed. As the output pressure increases and remains constant, the reciprocating speed of the piston slows down until it stops. After the output pressure reaches a constant level, energy consumption reaches a low level and various components stop working. When the pressure in the pressure maintaining circuit drops, the booster valve will automatically start to supplement the leaked pressure. Regardless of the pressure drop caused by any reason, the booster engine will always maintain a constant circuit pressure.
(2) Working principle of gas-liquid booster pump:
Gas-liquid booster pump is a reciprocating piston pump that uses gas as the power source, and the boost ratio determines the pump's large output pressure. It uses the low-pressure gas driving surface at the large piston end to convert it into high-pressure liquid at the small piston end.
When the driving piston runs backwards, the booster pump sucks the liquid into the pump, and the one-way valve at the inlet opens and the outlet one-way valve closes. When the piston moves forward, a certain pressure will be formed on one side of the liquid. At this time, the one-way valve at the inlet is closed, and the one-way valve at the outlet is opened. High pressure liquid will flow out from the outlet.
The gas-liquid booster pump can achieve automatic circulation. When the outlet pressure increases, the pump will slow down and produce a certain resistance to the piston; When the force is balanced, the pump will automatically stop running, and at this time, the pressure at the high-pressure piston end reaches equilibrium with the liquid pressure; The piston remains stationary, with low energy consumption and no oil temperature issues, and all components stop working. When the outlet pressure decreases or the gas drive pressure increases, the liquid pump will automatically start running.
2. Differences in types:
Although both are pneumatic booster pumps, the former is a piston pump, and the booster medium is gas, such as compressed air, nitrogen, carbon dioxide, water vapor, natural gas, etc. The latter is a plunger pump, and the booster medium is liquid, such as water, kerosene, hydraulic oil, petroleum, lotion, etc.
The working principle of gas booster pump and gas-liquid booster pump drive components is the same, but the pressure is different, because the gas is compressible, and the compressibility of the liquid can be ignored.