在工作中有时会出现这种情况：需增压气体被断开，却开着增压泵，增压泵噪声也很大。此进增压泵工作频率很高，压力却无法加上去，增压泵噪声也很大。长时间这样工作，很容易损坏泵。同样道理，当增压泵出口压力很低时，增压泵工作频率会很高，增压泵也容易损坏。
Sometimes this happens during work: the booster pump is turned on when the pressurized gas is disconnected, and the noise of the booster pump is also very loud. The booster pump has a high working frequency, but the pressure cannot be added, and the booster pump has a great noise. If you work like this for a long time, it is easy to damage the pump. Similarly, when the outlet pressure of the booster pump is very low, the working frequency of the booster pump will be very high and the booster pump is easy to be damaged.
在实际工作中级连增压泵出现过这种特殊情况：卸压阀不断卸压，增压泵频率很快，增压泵频率低，仔细检查后发现设定值偏小，调高设值后，出现可调压力开关阀大量放气。后来确认是增压泵有问题。原来该增压泵的控制阀上侧与管道连通，没有断开。
In the actual work, this special situation has occurred in the intermediate booster pump: the pressure relief valve continuously relieves the pressure, the booster pump frequency is very fast, and the booster pump frequency is low. After careful inspection, it is found that the set value is too small. After adjusting the set value, there is a large amount of bleeding from the adjustable pressure on-off valve. Later, it was confirmed that there was a problem with the booster pump. It turns out that the upper side of the control valve of the booster pump is connected with the pipeline and is not disconnected.
因此增压泵不断增压，不受控制。换句话说，该泵与设计图纸要求型号一样，但是它少装了一个小零件及气路客道堵头，从而导致工作不正常。这个零件应该安装在泵内，因此不易发现。为了使该设备能够正常工作，采取了的方法：将增压泵进气的截止球阀进气量关小，从而降低了增压泵的工作频率，使泵组维持正常工作。彻底解决则是装上该堵头。
Therefore, the booster pump is constantly pressurized and uncontrolled. In other words, the model of the pump is the same as that required by the design drawing, but it is less equipped with a small part and gas path passenger channel plug, resulting in abnormal operation. This part should be installed in the pump, so it is not easy to find. In order to make the equipment work normally, a new method is adopted: turn down the air intake of the stop ball valve of the booster pump, so as to reduce the working frequency of the booster pump and keep the pump set working normally. The complete solution is to install the plug.
还有一种特殊情况：增压泵突然停止工作，总压力也上不去了。在现场检查，发现它的换向阀V3被顶信不能动弹。于是关了增压泵组的压缩空气，卸下时，发现的阀心被一股气往处弹出。原来导致V3的阀心不能运动是因为该阀右端有压强，没有卸压。之所以没有卸压是因为活塞停在了中间位置，没有碰开控制阀V1。
There is also a special case: the booster pump suddenly stops working, and the total pressure can't go up. During on-site inspection, it was found that its directional valve V3 was jacked and could not move. Therefore, the compressed air of the booster pump set was turned off. When it was unloaded, the valve core was found to be ejected by a stream of air. It turns out that the valve core of V3 cannot move because there is pressure at the right end of the valve and there is no pressure relief. The reason why there is no pressure relief is that the piston stops in the middle position and does not touch the control valve v1.
导致活塞停在中间有三个原因：(1)增压泵出现异常造成增压泵2进气口压国过大;(2)
气体增压泵有两个增压气缸，工作时是双向压缩，双向行程都需要提供驱动;(3)活塞在静止状态下启动时静摩擦力大。装回换向阀V3，打开压缩空气重新启动，泵组工作正常解决这种故障还有一个办法，就是关掉压缩空气，让高压气体出口压强降到3Mpa左右，再重新启动泵组。
There are three reasons why the piston stops in the middle: (1) abnormal booster pump causes excessive pressure at the inlet of booster pump 2; (2) The gas booster pump has two booster cylinders. When working, it is two-way compression, and the two-way stroke needs to be driven; (3) When the piston starts in a static state, the static friction is large. Install the reversing valve V3, open the compressed air and restart. The pump unit works normally. Another way to solve this fault is to turn off the compressed air, reduce the outlet pressure of high-pressure gas to about 3Mpa, and then restart the pump unit.
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