Flow velocity sensor
A flow rate sensor, resistance strain technology, applied in fluid velocity measurement, instrument, velocity/acceleration/shock measurement, etc., can solve the problems of impeller-type flowmeter with large flow resistance, high requirements for use of ring, difficult installation, etc., to ensure stability The effect of increasing the contact area and convenient connection
Inactive Publication Date: 2016-10-26
WUXI LEHUA AUTOMATION TECH
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Problems solved by technology
[0007] The technical problem to be solved by the present invention is: to overcome the technical problems in the prior art, such as the high cost of optical and acoustic flow meters, the high requirements for the use of rings, the large flow resistance of the impeller type flow meter, and the difficulty in installation, etc., to provide a flow sensor
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[0024] The present invention is described in further detail now in conjunction with accompanying drawing. These drawings are all simplified schematic diagrams, which only illustrate the basic structure of the present invention in a schematic manner, so they only show the configurations related to the present invention.
[0025] Such as figure 1 As shown, the present invention is a flow rate sensor, including a support plate used to be arranged on the inner wall of the pipeline and a clamping plate connected to the outer wall of the pipeline, and a cavity for installing a resistance strain band is arranged in the support plate. A trapezoidal support block is provided in the middle of the installation cavity of the resistance strain band, an elastic adhesive layer is provided on the surface of the support block, and resistance strain bands are fixed at both axial ends of the support plate corresponding to the installation cavity of the resistance strain band. Groove; the middle...
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The invention relates to a flow velocity sensor comprising a supporting plate arranged on the inner wall of a pipeline and a clamping plate connected to the outer wall of the pipeline. A resistance strain belt installation cavity is arranged in the supporting plate. A trapezoidal supporting block is arranged in the middle of the resistance strain belt installation cavity. An elastic rubber layer is arranged on the surface of the supporting block. The two axial ends, corresponding to the resistance strain belt installation cavity, of the supporting plate are each provided with a resistance strain belt fixing slot. The middle of a resistance strain belt is in contact with the elastic rubber layer, and the two ends of the resistance strain belt are fixed into the resistance strain belt fixing slots respectively. The clamping plate and the supporting plate are fixedly connected by screws. Two connecting pipes are arranged on the supporting plate. A conductive rod is arranged inside each connecting pipe. The ends of the conductive rods are connected through conduction with the resistance wire of the resistance strain belt. A conductor connected with the conductive rods through conduction is arranged in the clamping plate, and the conductor extends to the outside of the clamping plate to be connected with a Wheatstone bridge.
Description
technical field [0001] The invention relates to a flow velocity sensor, which belongs to the field of pipeline flow velocity sensors. Background technique [0002] As a device for measuring the velocity of water flow, the flow meter can be divided into several categories according to the field, such as mechanical type, optical type, and acoustic wave type, among which: [0003] The optical type and the acoustic wave type have high data acquisition accuracy, timely flow rate feedback, and no attenuation on the pipeline flow rate. They are widely used in some high-precision fields, such as: pharmaceuticals, precision chemicals, fluid model building, pipelines and pumps, etc. Precision fluid conveying equipment testing, etc.; optical type and acoustic type are mainly manufactured through media such as sound waves and electromagnetic waves, using the concept of different attenuation effects and different propagation speeds on sound waves and electromagnetic waves under different...
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IPC IPC(8): G01P5/08
CPCG01P5/08G01P5/086
Inventor 钱国东
Owner WUXI LEHUA AUTOMATION TECH