论文部分内容阅读
大口径输水管道的计量,在我国给水事业上,还不很完善。目前使用的各种计量设备,在实际应用中尚存在不少问题。为了解决这一矛盾,我公司从1975年下半年开始进行均速管流量计的研制工作。在研制过程中,我们得到了同济大学、复旦大学、无锡轻工业学院、江苏省建筑科研所的大力支持和帮助。现将我们的研制情况报告于下:构造和测量原理均速管流量计,是由毕托管流速计演变而来的,由流线形的测量体和差压计(二次仪表)两部分组成(如图1)。测量原理:置于被测流体中的测量元件,在迎流方向的横向端面上,沿纵向母线按一定间距配置φ3的感受孔,感受到流体
The measurement of large-diameter aqueducts is still not perfect in China’s water supply business. There are still many problems in practical applications for various metering equipments currently used. In order to solve this contradiction, our company began to develop the equal flow tube flowmeter from the second half of 1975. In the development process, we have received strong support and assistance from Tongji University, Fudan University, Wuxi Institute of Light Industry, and the Jiangsu Institute of Architectural Research. Now we report on the development of the following: Structure and measurement principle Speed tube flowmeter, is derived from the pitot tube flowmeter evolved from the streamlined measurement body and differential pressure meter (secondary instrument) composed of two parts (Figure 1). Measuring principle: The measuring element placed in the fluid to be measured, on the transverse end face in the direction of flow, the phi 3 feel hole is arranged along the longitudinal generatrix at a certain distance, and the fluid is felt