Uniform speed flow measuring device possessing speed raising function
A flow measurement device and function technology, applied in the field of average velocity flow measurement devices, can solve the problems of no uniform velocity, narrow pipe diameter application range, etc., achieve good uniform velocity performance, increase the signal boosting function, and improve the radial automatic uniform velocity effect of function
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Embodiment 1
[0026] Example 1, see figure 1 , figure 2 . The product described in this embodiment 1 is composed of a measuring rod 7, a reinforcing sleeve 6, a mounting base 8, a sealing gasket 5 and a connecting head. Said measuring rod 7 is welded and installed on the lower side of the flanged connection plate 4 in the joint head. Three connection nozzles are installed on the upper surface of the flange connection plate 4: the total pressure connection nozzle 3, the temperature socket 2 and the static pressure connection nozzle 1, and there is also one on the total pressure connection nozzle 3 and the static pressure connection nozzle 1 Blow out the nozzle. Said measuring stick 7 cross section is " big head fish " shape, is made of total pressure pipe 11 and static pressure pipe 15 . The section of the tube wall 12 of said total pressure tube 11 and static pressure tube 15 is made of symmetrical arc and shared dividing plate 16 respectively, and the arc of total pressure tube 11 is ...
Embodiment 2
[0028] Example 2, see image 3 , Figure 4 . This program is improved on the basis of the measuring stick 7 described in Example 1, and its difference from Example 1 is that a speed-up plate 17 is added on both sides of the measuring stick 7, and the speed-up plate 17 is based on the measuring stick The axis of symmetry of the section is symmetrical and parallel to the measuring rod 7. The cross-section of the speed-raising plate 17 is equal in length to the cross-section of the measuring rod 7. The inner profile of the section is an arc line, and the outer profile is a straight line. A plurality of positioning partitions 18 are arranged along the length direction between the measuring rod 7 and the speed-increasing plate 17, and the measuring rod 7 is divided into two or more rectangular Venturi nozzles with precise dimensions. Taking pipe diameter D=400mm as an example, five positioning partitions 18 are set to divide the measuring rod 7 into four rectangular Venturi nozzl...
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