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Instantaneous flow velocity and direction measuring instrument of fluid in pipelines
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A technology of instantaneous flow rate and internal fluid, applied in the direction of velocity/acceleration/impact measurement, measurement device, instrument, etc., to achieve the effect of simple installation, small energy loss and simple structure
Inactive Publication Date: 2011-01-19
HARBIN INST OF TECH
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[0003] In order to solve the problem that the existing pipeline flow velocity measuring instrument cannot measure the instantaneous flow velocity of the fluid and the flow direction of the fluid, the present invention proposes a method for measuring the fluid in the pipeline. Instantaneous velocity flow direction measuring instrument
Method used
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specific Embodiment approach 1
[0011] Specific implementation mode 1. Combination figure 1 and figure 2 Describe the specific embodiment, the instantaneous flow velocity and flow direction measuring instrument of the fluid in the pipeline, which includes the impeller 1, the transmission shaft 2, the grating 3, the light source 4, the photosensitive element 5, the signal acquisition module 6, the signal analysis module 7, the tube barrel 10, the connection Rod 19, pulp board 20, first terminal 21, second terminal 22, third terminal 23, fourth terminal 24 and contact switch 25, have shaft hole on the cylinder wall of tube tube 10, described shaft The inner diameter of the hole is the same as the section diameter of the transmission shaft 2, the transmission shaft 2 passes through the shaft hole and is perpendicular to the wall of the tube 10, one end of the transmission shaft 2 is fixedly connected to the center of the impeller 1, the The other end of the drive shaft 2 is fixedly connected to the center of...
specific Embodiment approach 2
[0015] Specific embodiment two, combine image 3 Describe this specific embodiment, the difference between this specific embodiment and the instantaneous flow velocity and flow direction measuring instrument of the fluid in the pipeline described in the first specific embodiment is that it also includes a first baffle plate 11, a second baffle plate 12, and a third baffle plate 13 and the fourth baffle plate 14, the first baffle plate 11, the second baffle plate 12, the third baffle plate 13 and the fourth baffle plate 14 are all fixed on the inner wall of the pipeline 10, and each baffle plate is connected with a Corresponding to the terminal, the pulp board 20 is located in the area formed by the four baffles, and its length is greater than the length of the diagonal line formed by the four baffles. The two ends of described paddle plate 20 are respectively positioned at the different sides of two baffle plates that are mutually diagonal.
[0016] In this embodiment, four b...
specific Embodiment approach 3
[0017] Embodiment 3. The difference between this embodiment and the instrument for measuring the instantaneous flow velocity and direction of the fluid in the pipeline described in Embodiment 1 or 2 is that the photosensitive element is a phototransistor or a photoresistor.
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Abstract
The invention discloses an instantaneous flow velocity and direction measuring instrument of fluid in pipelines. The invention solves the problem that the existing flow velocity measuring instrument can not measure the instantaneous flow velocity or direction of the fluid. The impellers and grating of the measuring instrument are parallel with each other and are fixedly connected through a transmission shaft; a light source is arranged right above the light-sensitive surface of a light-sensitive element, and the light-sensitive component is fixed on the outer wall of a pipe barrel; light and dark stripes of the external fringe of the grating are placed between the light source and the light-sensitive element, and the same side wall of the pipe barrel is provided with four binding posts which are arranged in a shape of a quadrilateral; a pulp board drives a touch switch to be connected with contact points arranged on binding posts. The instantaneous flow velocity and direction measuring instrument of fluid in pipelines is applicable to measuring process of flow velocity of the fluid in the pipeline.
Description
technical field [0001] The invention relates to a flow velocity and direction measuring instrument. [0002] Background technique [0003] Existing flow rate measuring instruments mostly use a turbine to measure the water flow rate of an open channel. The turbine rotates under the drive of the water flow, and induces an electromagnetic switch to generate electrical signal pulses. The flow rate of the turbine is measured according to the pulse signal, and then the water flow rate is determined. However, the water flow resistance of the turbine in the water pipeline is relatively large, and the flow velocity can only be calculated once the turbine rotates. The measurement cycle is long, and the instantaneous flow velocity in the water pipeline cannot be measured; at the same time, the existing fluid flow direction is directly in the open channel. Visually, it is impossible to measure the flow direction of fluid in non-open channels. [0004] Contents of the invention [00...
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Application Information
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