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Uniform speed flow measuring device possessing speed raising function

A flow measurement device and functional technology, which is applied in the field of uniform velocity flow measurement devices, can solve the problems of no uniform velocity and narrow application range of pipe diameter, etc., and achieve the effects of good uniform velocity performance, increased signal boosting function, and low measurement lower limit

Inactive Publication Date: 2006-05-24
温汉璋
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The present invention overcomes the problems of the prior art that there is no uniform velocity function and the applicable range of the pipe diameter is narrow

Method used

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  • Uniform speed flow measuring device possessing speed raising function
  • Uniform speed flow measuring device possessing speed raising function
  • Uniform speed flow measuring device possessing speed raising function

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] 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

[0025] 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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Abstract

The invention relates to a device for measuring fluid flow, in particular to an average speed flow measuring device with a speed increasing function. In order to solve the problems of no uniform velocity function and narrow application range of pipe diameters in the prior art, the technical solution is: a uniform velocity flow measurement device with a speed increasing function, which is composed of a measuring rod and a connector. The measuring rod is determined by the total pressure The width of the total pressure tube and the static pressure tube is the widest at the shared partition and the width of the total pressure tube is greater than the width of the static pressure tube; the measuring rod is provided with an array of total pressure and static pressure points; The total pressure sampling hole is arranged at the symmetrical arc joint of the pipe wall of the total pressure pipe; the static pressure sampling hole is symmetrically arranged on the pipe wall near the partition on the static pressure pipe. On the outside of the above-mentioned measuring rod, two speed-increasing plates are arranged parallel and symmetrically along the axial direction of the measuring rod. The outer surface is a straight line or a smooth arc convex outward.

Description

Technical field: [0001] The invention relates to a device for measuring fluid flow, in particular to an average speed flow measuring device with speed increasing function. Background technique: [0002] With the rapid development of electronic technology, the development of flow measurement secondary instruments has reached a very high level, but the development of flow measurement primary instruments is relatively slow, and there are many deficiencies. Invented two patent technologies with patent numbers "98 2 32751.X" and "00 2 34506.4". However, in actual use, some new problems have been discovered: 1. Design according to the average speed point, without the function of average speed: In the actual process flow of the use site, the length of the straight pipe section of the given large pipeline flowmeter is relatively short and Diversified types of resistance parts lead to non-standard flow field and strange changes in the cross-sectional flow velocity distribution of ea...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01F1/44G01F1/34
Inventor 温汉璋
Owner 温汉璋
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