Electromagnetic flow measuring device
A measuring device and electromagnetic flow technology, which is applied to the measuring device, the electromagnetic flowmeter is used to detect the fluid flow, the volume/mass flow generated by the electromagnetic effect, etc. It is not high enough, the range ratio of the electromagnetic flowmeter is not wide enough, etc., to achieve the effect of stable and reliable measurement, long-term stability and reliability, and simple structure
Pending Publication Date: 2020-04-17
NINGBO DONGHAI GRP CORP
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Problems solved by technology
The measuring tubes of electromagnetic flowmeters on the market are mostly circular measuring tubes, such as the Chinese utility model patent "An Electromagnetic Flowmeter for Farmland Irrigation" with the authorized announcement number CN209181846U (application number 201920107065.4), and the authorized announcement number CN209069356U (application number No. 201822192038.X) Chinese utility model patent "An Electromagnetic Flowmeter". The electromagnetic flowmeters disclosed in these patents all have circular measuring tubes. In actual use, the starting flow rate of the electromagnetic flowmeter is Not low enough, so that the electromagnetic flowmeter has the problem that the range ratio is not wide enough, and there is also the problem that the volume accuracy of the liquid medium is not high enough
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[0018] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.
[0019] Such as Figure 1 to Figure 3 As shown, the electromagnetic flow measuring device in this embodiment includes a main body 1 with a through passage, the main body 1 includes a measuring section 11, a connecting section 12 for matching connection with the flow channel of a conductive liquid medium, and a transition connection connecting In the transition section 13 between section 12 and measurement section 11, two opposite excitation coils 2 are arranged on the outer wall of measurement section 11, and a magnetic core 3 is arranged in each excitation coil 2, and two opposite excitation coils 2 are arranged inside measurement section 11. The electrode 4.
[0020] Wherein the connecting section 12 is a tubular structure with a circular cross section, the end of the connecting section 12 is covered with a flange 5, which can be fixedly con...
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The invention relates to an electromagnetic flow measuring device. The electromagnetic flow measuring device comprises a hollow measuring section, connecting sections which are arranged at the two ends of the measuring section respectively and used for being connected with a flow channel of a conductive liquid medium in a matched mode, a transition section which is connected between the connectingsections and the measuring section in a transition mode, two exciting coils which are oppositely arranged on the outer wall of the measuring section, a magnetic core which is arranged in each exciting coil, and two electrodes which are oppositely embedded in the measuring section. Channels for a conductive liquid medium to flow is formed in the measuring section, the transition section and the connecting sections in a penetrating manner; the inner diameter of the measuring section in the horizontal direction is the same as the inner diameter of the connecting sections, the inner diameter of the measuring section in the vertical direction is smaller than the inner diameter of the connecting sections, the two exciting coils are oppositely arranged in the vertical direction, and the two electrodes are oppositely arranged in the horizontal direction. The electromagnetic flow measuring device is good in connectivity, capable of increasing the measuring range ratio and the starting flow, capable of reducing power consumption, high in metering accuracy, small in flow and high in sensitivity.
Description
technical field [0001] The invention relates to the technical field of flow measurement, in particular to an electromagnetic flow measurement device. Background technique [0002] Electromagnetic flowmeter is a flow meter that uses Faraday's law of electromagnetic induction as its principle. It is a speed flow meter that measures the volume flow of conductive liquid. Usually, the inner part of the measuring tube of the electromagnetic flowmeter in contact with the liquid medium is a cylindrical measuring straight tube. A group of excitation coils is symmetrically installed on the measuring tube up and down, and a pair of horizontally installed measuring electrodes are inlaid in the middle, and the two are distributed in a symmetrical cross. The amplitude of the electrode signal generated by the electromagnetic flowmeter is proportional to the flow velocity of the fluid, so the flow data is obtained after being processed by the circuit signal converter. It has the advantage...
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IPC IPC(8): G01F1/58
CPCG01F1/58G01F1/588
Inventor 林志良王青陆平韩春立
Owner NINGBO DONGHAI GRP CORP