本发明公开了一种倾斜倒置的U形压力计及压差检测方法，包括底部朝上、顶部朝下倒置并倾斜固定在支架上的U形压力计本体，压力计本体两个端部均连接有排放管、引压管；排放管用于气柱和/或液体的排出，两个引压管的另一端位于不同的气压待测点。采用本发明，克服了U形压力计常规使用时读数困难、误差大的问题，倾斜倒置的U形压力计，增大了液体上表面的面积，该种可对U 形压力计本体的直线段与液体表面接触点进行读数，减弱了普通U形压力计造成的视觉读数的误差；此外，两个直线段可同时读取最左侧或最右侧的数据，能进一步减小读数的误差；结构简单，可使用普通的U形压力计进行改装，成本低。

The invention discloses an inclined inverted U-shaped pressure gauge and a differential pressure detection method, including a U-shaped pressure gauge body with the bottom up, the top down inverted and inclined fixed on the bracket. The two ends of the pressure gauge body are connected with a discharge pipe and a pressure pipe. The discharge pipe is used for the discharge of gas column and / or liquid, and the other end of the two pressure pipes is located at different pressure measuring points. The invention overcomes the problem of difficult reading and large error in the conventional use of U-shaped pressure gauge. The inclined inverted U-shaped pressure gauge increases the area of the upper surface of the liquid. This kind of U-shaped pressure gauge can read the straight line segment of the U-shaped pressure gauge body and the contact point of the liquid surface, which reduces the error of visual reading caused by the ordinary U-shaped pressure gauge. In addition, the two straight line segments can simultaneously read the data on the left or right side, which can further reduce the error of reading ; the structure is simple, and it can be modified with an ordinary U-shaped pressure gauge with low cost.