Vortex-enhanced bionic electromagnetic vortex flowmeter

Today we introduce a national invention patent - a bionic electromagnetic vortex flowmeter with vortex reinforcement.

Background of the invention

At present, most of the vortex flowmeters use piezoelectric sensors, which are susceptible to external vibration interference and affect measurement accuracy. The electromagnetic vortex flowmeter utilizes the principle of electromagnetic induction to overcome the shortcomings of the vortex flowmeter's anti-interference ability. In the field of petroleum water injection, the flowmeter is usually required to have a small volume, a wide measurement range, and a high pressure resistance, and the current electromagnetic vortex flowmeter on the market is large in size and sealed. Difficulties need further improvement.

Summary of the invention

The object of the present invention is to provide a bionic electromagnetic vortex flowmeter with vortex strengthening ability, which solves the problems that the existing vortex generating body is prone to horseshoe vortex and vortex frequency and low strength.



Schematic diagram of fluid flow in the main channel

The object of the present invention is achieved by the present invention: a bionic electromagnetic vortex flowmeter having a vortex strengthening capability, comprising: a main channel, a vortex generator, an electrode, an upper magnet, a lower magnet, and a vortex The body is arranged in the main channel, a hollow cylindrical cavity is fixed above the main channel, and a signal processing converter is installed above the cylindrical cavity. The cylindrical cavity is provided with an electrode and an upper magnet in turn, and the electrode is connected to the signal processing converter through the wire, and the lower end of the upper magnet Passing through the main channel wall into the main channel, a lower magnet is fixed below the main channel, and the vortex generating body is disposed between the main channel inlet and the upper magnet extending into the main channel.

The present invention may further include: 1. The vortex generating body is based on a tetragonal vortex generating body, and has a fish tail groove at a front end portion thereof, and a concave surface on each side thereof at a rear end thereof. a circular arc groove, the concave surface has a cross section of 1.5 sinusoidal wave shape, and a jet hole is arranged in the vortex generating body, and the two ends of the jet hole are respectively located on the fish tail groove and the circular groove, and The jet orifice is parallel to the tangential direction of the valley of the positively swirling wave shape. 2. The fishtail groove of the vortex generator faces the flow direction in the main channel.

The invention has the advantages that the bionic vortex street body of the invention has a fish tail groove on the flow surface, and the groove has a jet hole, which can greatly reduce the resistance to the water flow, and the fluid flowing out through the jet hole is at the right end. The surface is parallel to the fluid flowing from the side of the groove, which significantly enhances the fluid flow rate. At the same time, the side grooves are also more favorable for the vortex shedding, so the vortex generator can enhance the strength of the vortex and have a higher Strouhal number. The higher the Sr value, the higher the frequency of vortex shedding when the flow rate in the measuring tube and the width of the generating body are fixed, that is, the more vortices that fall off from the body in a unit time, for the different diameter of the body, when the diameter of the pipe When the width of the upstream surface of the generating body is fixed, the higher Sr value means that the vortex generating body can separate more vortices when the flow rate is the same, and the generating body can effectively reduce the lower limit of the flow rate that the vortex flowmeter can measure.

For further information, please download the full specification of the patent.

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