Electromagnetic flow velocity sensor
A flow rate sensor and sensor technology, used in fluid velocity measurement, using differential pressure to measure fluid velocity, instruments, etc., can solve the problems of many mechanical parts, single measurement method, large volume, etc., to achieve a wide range of applications, easy to use, dynamic Responsive effect
Pending Publication Date: 2021-03-16
开封开流仪表有限公司
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Problems solved by technology
This traditional method is slightly larger in size, has many mechanical parts, and has narrow heat-sensitive applications. It is mostly used to measure the wind speed of pipelines, etc. In addition, it uses a single measurement method, which is easily affected by magnetic field interference and environmental factors.
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[0035] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0036] In describing the present invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", " The orientation or positional relationship indicated by "outside", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referre...
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The invention provides an electromagnetic flow velocity sensor, which comprises a shell, a first flow velocity testing unit, and a second flow velocity testing unit. The shell comprises a front shell,a connecting part and a rear shell which are connected in sequence, the front end of the front shell is provided with an infusion tube which is inserted along the length direction of the shell, the front end of the infusion tube is provided with a dynamic pressure hole, and the middle end of the front shell is provided with a static pressure hole; the first flow velocity testing unit comprises aflow velocity differential pressure sensor, and the flow velocity differential pressure sensor is arranged between the front shell and the connecting part; the second flow velocity testing unit comprises a magnet exciting coil and an electrode which are arranged in the front shell, the magnet exciting coil is annularly arranged outside the infusion tube, and the electrode is electrically connectedwith the magnet exciting coil; and a flow rate explicit unit is also included. The electromagnetic flow velocity sensor is fast in dynamic response, high in accuracy degree and wide in application range.
Description
technical field [0001] The invention relates to the technical field of flow velocity measurement of conductive liquids, in particular to an electromagnetic flow velocity sensor. Background technique [0002] A flow meter, as the name implies, is an instrument for measuring flow velocity. The application range of the flow meter is very wide. If it is divided according to the measuring instrument, the existing sensors for measuring the flow velocity and flow direction mainly adopt the acoustic method, the sensor mechanical type and the heat sensitive type. [0003] Among them, although the acoustic method is accurate in measurement, it is expensive and difficult to miniaturize. The traditional mechanical method mostly adopts the impeller type or the three-cup type to measure the flow velocity, and the flow direction indicator must be attached to drive the angular displacement sensor to measure the flow direction. This traditional method has a slightly larger volume, more mec...
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Login to View More IPC IPC(8): G01P5/08G01P5/14
CPCG01P5/08G01P5/14
Inventor赵志伟张珂马腾蛟王梅马楠李帅夏石杰田鹏
Owner开封开流仪表有限公司