1、 Determine the type of pneumatic booster pump based on the boosting medium. For example, if the pressurization medium required is gas: air, nitrogen, hydrogen, etc., we will choose between air booster pump and gas booster pump. The pressurized medium is liquid, so we choose from pneumatic liquid booster pumps.
二、根據系統所需壓力初步確定氣動增壓泵的型號。一般情況下氣動增壓泵的驅動氣壓為4-8bar。而增壓比的計算方法是Po/Pa。 其中，Po是系統的輸出壓力; Pa是氣動增壓泵的驅動壓力，正常情況下取大值0.7MPa。 根據計算出來的增壓比，在相應類型的泵表中選擇型號。注意，通常我們會選擇增壓比略高于計算值的氣動增壓泵，以確保我們的泵在通常情況下都能輸出系統所需壓力。
2、 The model of the pneumatic booster pump is preliminarily determined based on the required pressure of the system. Generally, the driving pressure of the pneumatic booster pump is 4-8 bar. The calculation method for the boost ratio is Po/Pa. Where Po is the output pressure of the system; Pa is the driving pressure of the pneumatic booster pump, and the maximum value is 0.7MPa under normal conditions. Select a model from the corresponding type of pump table based on the calculated boost ratio. Note that we usually choose a pneumatic booster pump with a boost ratio slightly higher than the calculated value to ensure that our pump can normally output the pressure required by the system.
3、 Check whether the flow of the pneumatic booster pump meets the system requirements.
當我們根據氣動增壓泵的出口壓力初步選擇了型號后，下一步需要核算該氣體增壓泵、液體增壓泵的流量是否滿足要求。首先液體增壓泵的流量計算方法是這樣的:每沖程的排量x每分鐘的動作頻率(一般以50計) 。比如，DKA40氣動液體增壓泵，我們在泵表中查到它每沖程的排量是63.3ml，那么它的流量63.3mlx 50= 3165ml/min= 3.165L/min。
After we have preliminarily selected the model based on the outlet pressure of the pneumatic booster pump, the next step is to check whether the flow of the gas booster pump and the liquid booster pump meet the requirements. Firstly, the flow calculation method for a liquid booster pump is as follows: displacement per stroke x operating frequency per minute (generally calculated as 50). For example, for the DKA40 pneumatic liquid booster pump, we found in the pump table that its displacement per stroke is 63.3ml, so its flow rate is 63.3mlx 50=3165ml/min=3.165L/min.
Compare this flow rate with the flow rate required by the system to see if it meets the requirements. If the flow rate is insufficient, then we will select a pump with a similar boost ratio and a relatively large flow rate, and calculate the flow rate until it meets the system flow requirements. The calculation method for a gas booster pump is as follows: First of all, it should be understood that the flow rate referred to in nL (standard liter) refers to the flow rate at atmospheric pressure. Because gas has compressibility and liquid does not exist, it is necessary to calculate the gas flow rate in a unified unit. nL/min means that the medium (pure gas) pressurized by the gas booster pump within 1 minute is placed at atmospheric pressure to measure its volume.
Therefore, for gases, we need to consider the magnitude of the pre pressurization pressure. For example, if we use an air booster DTE02 to pressurize 7bar of air to 1.4MPa, its flow rate is 1.6nL * 7 * 50=562688ml/min ≈ 562.7nL/min. Select the material of the pneumatic booster pump according to the boosting medium. After the above three steps, we can choose the basic model of the pump.
However, the correct model also needs to consider the requirements of the medium to be contacted by the pneumatic booster pump. Normally, we can choose aluminum alloy. If the pressurized medium requires high material requirements, such as strong oxidizing gases such as oxygen and ozone, it is necessary to contact our sales or technical personnel to develop relevant supporting plans.
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