一、根据增压介质确定气动增压泵类型。例如需要增压介质是气体：空气、氮气、氢气等，我们就在空气增压泵/气体增压泵中选择。增压介质是液体，我们就在气动液体增压泵中选。
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、根据系统所需压力初步确定气动增压泵的型号。一般情况下气动增压泵的驱动气压为4-8bar。而增压比的计算方法是Po/Pa。 其中，Po是系统的输出压力; Pa是气动增压泵的驱动压力，正常情况下取大值0.7MPa。 根据计算出来的增压比，在相应类型的泵表中选择型号。注意，通常我们会选择增压比略高于计算值的气动增压泵，以确保我们的泵在通常情况下都能输出系统所需压力。
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.
三、核算气动增压泵的流量是否满足系统要求。
3、 Check whether the flow of the pneumatic booster pump meets the system requirements.
当我们根据气动增压泵的出口压力初步选择了型号后，下一步需要核算该气体增压泵、液体增压泵的流量是否满足要求。首先液体增压泵的流量计算方法是这样的:每冲程的排量x每分钟的动作频率(一般以50计) 。比如，DKA40气动液体增压泵，我们在泵表中查到它每冲程的排量是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.
将这个流量与系统需要的流量比较，看是否满足要求，如果流量不够，那么，我们再选择一个增压比相近， 流量比较大的泵，并核算流量，直到满足系统流量要求为止。而气体增压泵的计算方法如下，首先要知道，nL（标升）所说的流量是指常压下的流量，因为气体具有压缩性，液体没有，所以在计算气体流量时，需要统一单位进行计算，nL/min的意思即将1分钟内经过气体增压泵增压的介质(纯净气体)放在常压下去测量它的体积。
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.
所以，对于气体，我们需要考虑预增气压的大小。比如，我们用空气增压器DTE02将7bar的空气增压至1.4MPa，那么它的流量1.6nL*7*50= 562688ml/min≈562.7nL/min。根据增压介质选择气动增压泵的材质。经过上面3个步骤后，我们可以选出泵的基本型号了。
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.
然而正确的型号还需要考虑气动增压泵增压我介质对所接触材质的要求。正常情况下来说，我们选择铝合金就可以。如果增压介质对材质要求较高，比如氧气，臭氧等强氧化气体，就需要与我们的销售或技术联系，制定相关的配套方案。
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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