In order to order the pneumatic booster pump in the best working condition, in the selection of pneumatic booster pump must be considered from many aspects:
1. Working pressure and flow rate
Pneumatic booster pump and power unit working pressure refer to the driving pressure of 0.6Mpa pump output pressure and flow. Safety measures should be considered if the pump’s maximum output pressure is greater than the required working pressure. For maximum output pressure, refer to the “Approximate Ratio table of Driving gas Pressure and output hydraulic Pressure at static” in the product catalog. The selection of power unit is consistent with that of pump. For working traffic, see “Performance Graph” in the product catalog.
2. Driving gas pressure and flow rate
The driving pressure of gas booster pump and power unit is not more than 0.8Mpa in continuous work, and can reach 0.8Mpa in intermittent work. For the gas consumption of the pneumatic pump in the optimal performance state, please refer to the required driving gas flow meter.
3. Conveying liquid medium
The liquid medium transported by gas booster pump is an important part in the selection of pneumatic booster pump. The material of the hydraulic part and the hydraulic seal ring are determined by the liquid medium transported. Pumps can be oil, water and most liquid media.
The main hydraulic seals of the standard pump are butadiene rubber and polyurethane, and the check valve seat is sealed with Teflon. Other sealing materials include fluorocarbons and ethylene-propylene, which are mainly used as special media for transport. Please consult the factory or local distributor for seal material selection.
4. Acceptable volume and weight of gas booster pump For some applications, the size and weight of pneumatic booster pump and power unit should also be considered. According to the pressure and flow requirements of customers, we can select the pneumatic booster pump according to the following process.
Calculate the minimum booster Ratio of pump ≥ customer pressure /0.7MPa.
Calculate the pump’s minimum per stroke displacement q≥ the customer needs to achieve flow /(40~60).
According to the above calculation results, choose the most suitable (pressure and flow are close, the price is the cheapest – under the same pressure level, the larger the pump price is more expensive; In the same series, the higher the pressure grade, the more expensive) pump.
In order to clarify the expression and selection process of gas booster pump, here is an example. For example, the oil pressure needs to be 150MPa, and the flow is only required to reach 30ml/min when pre-charging. Accordingly, we first determine the minimum booster Ratio of pump ≥150MPa/0.7MPa=215.