TWI457543B - Eddy current sensor and its application - Google Patents

Description

Vortex flu detector and its application

The invention relates to a vortex flu detector and an application thereof, in particular to using a vortex effect of a fluid to induce an electromotive force to be induced by a coil, and a signal for taking a voltage change thereof is applied as a reference value of a flow measurement to calculate a flow rate, and at the same time The electromotive force application is a vortex flu detector for power supply and its application.

Press, the vortex flu detector is a device that uses the vortex effect to perform flow sensing. The most common application is to assemble a vortex flowmeter. The structure of a conventional vortex flu detector basically comprises: a fluid passage having a fluid inlet end and a fluid outlet end; and a vortex blunt body disposed in the fluid passage to divide the fluid passage into an upstream region And a downstream section, the fluid enters the upstream section via the fluid inlet end of the fluid passage, and then impacts the vortex blunt body, that is, a vortex phenomenon occurs in the downstream section (also known as Karman vortex street) a sensing rod is inserted in the downstream section and is subjected to a reciprocating displacement motion by a vortex phenomenon generated by the fluid; and a magnetic field is disposed at the top end of the sensing rod; the sensing rod is displaced The magnetic field produces a cutting action, so the signal corresponding to the change in the magnetic field is used as a reference value for the flow measurement to calculate the fluid flow.

Because the signal of the magnetic field changes is weak and unstable, it can be used after multiple sorting, so the overall calculation operation is complicated and the accuracy is relatively low. In addition, today's measuring instruments (such as flow meters) use electronic and arithmetic units equipped with soft and hard hardware for signal reception, data comparison and data remote transmission. This requires the use of an electric drive. The above-mentioned conventional vortex flu detector only has the function of sensing the flow of the fluid, except that it has no other use, and the vortex fluometer is often installed in the wilderness where the vortex flowmeter is assembled, and the use of electricity is quite considerable. Inconvenient, it is often necessary to apply for the power company to pull the cable, so the installation cost is greatly increased, and the real value is improved.

In view of the above-mentioned deficiencies, the inventors have intensively conceived research and development improvements, and after a long period of effort, the present invention has been produced.

Therefore, the main object of the present invention is to provide a vortex flu detector which can generate an electromotive force by itself, draw a voltage signal as a reference value of a flow measurement to calculate a flow rate, and apply an electromotive force as a power source. application.

In order to achieve the above object, the present invention provides a vortex flu detector comprising a fluid passage, a vortex bluff body, a sensing rod, a magnetic field and a coil, wherein the fluid passage has a fluid inlet end and a fluid outlet The vortex blunt body is a body-shaped object disposed inside the fluid passage to divide the internal space of the fluid passage into an upstream section and a downstream section; the sensing rod passes through the fluid passage from above The wall body is further inserted into the downstream section, and the sensing rod is spaced apart from the eddy current blunt body by a small distance; the magnetic field is disposed on the outer wall of the fluid passage, and the magnetic field line surrounds the top of the sensing rod a head; the coil is mounted on the periphery of the sensing rod; in use, after the fluid enters the upstream section through the fluid inlet end of the fluid passage, a smooth flow phenomenon occurs, and then the eddy current blunt body is impacted, and then A vortex phenomenon occurs in the downstream section, and the sensing rod is pushed to generate a reciprocating displacement motion, so that the magnetic field is cut to generate a change, and an electromotive force is induced in the coil.

In the above vortex flu detector, the eddy blunt body is a piece of body shape, A state perpendicular to the fluid flow direction is disposed inside the fluid passage.

In the above vortex detector, the sensing rod is covered with a protective member, and an object similar to a bushing or a bearing is disposed inside to assist in stabilizing the sensing rod and passing the sensing rod.

In the above vortex detector, the protection member is formed of an insulating material.

In the above vortex detector, the coil is connected to a power collector.

In the above vortex ray detector, the magnetic field is composed of a first magnetic member and a second magnetic member which are located on two sides of the sensing rod, and the magnetic lines of force generated are in a lateral passing mode.

In the above vortex ray detector, the magnetic field is formed by a magnetic member formed into a ring shape, and the magnetic lines of force generated are in a pattern of up and down.

The invention also provides an application of a vortex flu detector comprising a fluid channel, a vortex bluff body, a sensing rod, a magnetic field and a coil, wherein the fluid channel has a fluid inlet and a fluid The eddy current blunt body is a body-shaped object disposed inside the fluid passage to divide the internal space of the fluid passage into an upstream section and a downstream section; the sensing rod passes through the fluid passage from above The wall body is further inserted into the downstream section, and the sensing rod is spaced apart from the eddy current blunt body by a small distance; the magnetic field is disposed on the outer wall of the fluid passage, and the magnetic field line surrounds the sensing rod a top end; the coil is mounted on the periphery of the sensing rod; after the fluid enters the upstream section through the fluid inlet end of the fluid passage, a smooth flow phenomenon occurs first, and then the eddy current blunt body is impacted, and then the downstream area is A vortex phenomenon occurs in the segment, and the sensing rod is pushed to generate a reciprocating displacement motion, so that the magnetic field is cut to change, and an electromotive force is induced in the coil, and then the voltage is drawn. After the signal of, amplified, filtered, converted finishing processes various items, for the application of flow measurement reference value, thereby calculating the fluid flow rate.

The invention further provides an application of a vortex flu detector, the vortex flu detector comprises a a fluid passage, a vortex bluff body, a sensing rod, a magnetic field and a coil, wherein the fluid passage has a fluid inlet end and a fluid outlet end; the vortex blunt body is a body-shaped object disposed on the fluid Inside the channel, the internal space of the fluid channel is divided into an upstream segment and a downstream segment; the sensing rod passes through the wall of the fluid channel from above and is inserted into the downstream segment inwardly. The measuring rod is spaced apart from the eddy current blunt body by a small distance; the magnetic field is disposed on the outer wall of the fluid passage, and the magnetic field line surrounds the top end of the sensing rod; the coil is disposed at the periphery of the sensing rod; the fluid passes through the fluid After the fluid inlet end of the channel enters the upstream section, there is a smooth flow phenomenon, and then impacts the eddy current blunt body, and then a vortex phenomenon occurs in the downstream section, and the sensing rod is pushed to generate a reciprocating displacement. Movement, so the cutting of the magnetic field changes, and the electromotive force is induced in the coil, and the generated electromotive force is collected, and after being regulated, rectified, and transformed, the electricity is stored as electricity. Application.

1‧‧‧Vortex Influenza Detector

10‧‧‧ fluid passage

101‧‧‧ fluid inlet

102‧‧‧ Fluid outlet

11‧‧‧Upstream section

12‧‧‧Downstream section

20‧‧‧Vortex blunt body

30‧‧‧Sensing rod

31‧‧‧protection

40‧‧‧ magnetic field

41‧‧‧First magnetic parts

42‧‧‧Second magnetic parts

43‧‧‧ Third magnetic parts

50‧‧‧ coil

The first figure shows a perspective view of a first embodiment of the present invention.

The second figure shows a top view of the first embodiment of the present invention.

The third figure shows a side view of the first embodiment of the present invention.

The fourth figure shows a schematic view of the top view of the first embodiment of the present invention.

Figure 5 is a perspective view of a second embodiment of the present invention.

Figure 6 is a plan view showing a second embodiment of the present invention.

Figure 7 is a side view showing the second embodiment of the present invention.

In order to achieve the above object, the technical means and the achievable effects of the present invention are described in detail below with reference to the accompanying drawings. Fully understand.

Referring to the first to fourth figures, the vortex flu detector 1 of the first embodiment of the present invention includes a fluid channel 10, a vortex bluff body 20, a sensing rod 30, a magnetic field 40, and a coil 50. The fluid passage 10 has a fluid inlet end 101 and a fluid outlet end 102. The vortex bluff body 20 is a body-shaped object disposed inside the fluid passage 10 perpendicular to the fluid flow direction to the fluid. The internal space of the channel 10 is divided into an upstream section 11 and a downstream section 12. After the fluid enters the upstream section 11 through the fluid inlet end 101 of the fluid passage 10, a smooth flow phenomenon occurs first, and then the impact is reached. The vortex blunt body 20, and then a vortex phenomenon (also known as Karman vortex street) is generated in the downstream section 12; that is, the vortex blunt body 20 is formed as an obstacle to the fluid flow process, causing the fluid to pass through the The vortex blunt body 20 then creates a vortex phenomenon in the downstream section 12. The eddy current blunt body 20 can have many appearances and is not limited by the specification and the drawings of the present invention. Therefore, the eddy current defined by the present invention is a block body which can cause an eddy current phenomenon after a fluid impact. Blunt body 20.

The sensing rod 30 passes through the wall of the fluid channel 10 from above and is positioned and protected by a member like a bushing or a bearing and a waterproof gasket between the wall of the fluid channel 10, and is inserted in the downstream direction. In the section 12, the sensing rod 30 is spaced apart from the eddy current blunt body 20 by a small distance. Therefore, when the sensing rod 30 is pushed by the vortex phenomenon generated by the fluid, a slight reciprocating displacement phenomenon is accompanied, and the displacement direction is accompanied. Vortex and movement. In order to stabilize the sensing rod 30, a protective member 31 is further disposed on the outside of the sensing rod 30, and is formed of an insulating material, and an object similar to a bushing or a bearing is disposed inside to assist in stabilizing the sensing rod 30 and The sensing rod 30 is passed through.

The magnetic field 40 is disposed on the outer wall of the fluid channel 10, and the magnetic field lines surround the top end of the sensing rod 30. Therefore, when the sensing rod 30 is pushed and displaced, the magnetic field lines of the magnetic field 40 are cut to cause a change. The coil 50 is mounted on the periphery of the sensing rod 30 and is surrounded by the protection member 31. The coil 50 is fixedly fixed, and the two ends are passed through the protection member 31, and a power collection is performed. Connected (not shown). In the first to fourth figures, the magnetic field 40 is composed of a first magnetic member 41 (for example, a magnet) and a second magnetic member 42 (for example, a magnet) located on two sides of the sensing rod 30, thereby generating The magnetic field lines are in the lateral pass mode.

Next, referring to the fifth to seventh embodiments, the second embodiment of the present invention has the same structural composition as the first embodiment, and therefore the same structural components are the same component numbers to avoid confusion. The second embodiment is different from the first embodiment in that the magnetic field 40 is composed of a third magnetic member 43 (for example, a magnet) shaped into a ring shape, and the sensing rod 30 is surrounded by the center, so the second The magnetic field lines generated by the magnetic field 40 of the embodiment are in a pattern of up and down. However, in the first embodiment, the magnetic field 40 composed of the first magnetic member 41 and the second magnetic member 42 in the left and right positions or the third magnetic member 43 in the second embodiment is formed. The magnetic field 40 has the same composition principle and function.

The present invention is used in connection with a fluid line, that is, where fluid sensing is to be performed, the fluid line is disconnected, and then the fluid inlet end 101 of the fluid channel 10 of the present invention is connected to the supply end of the fluid line. The fluid outlet 102 is connected to the receiving end of the fluid line and the protective member 31 is placed above the fluid channel 10. When the fluid enters the upstream section 11 via the fluid inlet end 101, there is a smooth flow phenomenon, and then impinges on the vortex blunt body 20, and then a vortex phenomenon occurs in the downstream section 12, and Pushing the sensing rod 30 A phenomenon of reciprocating displacement is generated, so cutting the magnetic field 40 produces a change. At the same time, the electromotive force is induced in the coil 50 based on the magnetoelectric principle, and the protective member 31 is pierced through the two ends, connected to a power collector for receiving, and then regulated, rectified, and regulated by the power collector. After the finishing process such as transformation, it is stored as a power application. At the same time, the signal of the voltage change can be taken. After the process of amplification, filtering and conversion, the application is the reference value of the flow measurement to calculate the fluid flow.

Therefore, the coil 50 of the present invention can be used as follows due to the electromotive force induced by the displacement of the sensing magnetic field by the sensing rod 30:

1. The voltage change signal of the induced electromotive force is extracted, and after being amplified, filtered, and converted, the reference value of the flow measurement can be applied to calculate the fluid flow, and the stability and accuracy thereof are relatively Higher.

2. After the generated electromotive force is collected and assembled, it can be applied as a permanent power source to directly supply the vortex flow detector 1 of the present invention when assembled into a vortex flowmeter, and the electronic unit is equipped with a soft and hard electronic unit. The power needed. Since the fluid flowing through the fluid passage 10 is generally sourced, the electromotive force can be continuously generated for continuous power supply. Therefore, even if the vortex fluometer 1 is assembled into a vortex flowmeter, it is installed in the wilderness of the wilderness, but can still maintain the normal operation of the vortex flowmeter.

3. After the generated electromotive force is collected and sorted, it can be applied as a backup power source to supply electricity that is occasionally needed. For example, a vortex flowmeter installed in a sparsely populated area in the wilderness will still occasionally be inspected and inspected by the inspectors. At this time, the standby power supply can be used to power the inspectors for additional electrical items (such as small illumination illuminators). , data processor, or signal transmitter) for convenience.

In summary, the present invention can achieve the intended purpose of the invention and the efficacy of use, and has been disclosed in detail to enable the skilled person to implement the data, thus completing All meet the requirements for the establishment of invention patents. The above description is only intended to illustrate the preferred embodiments of the present invention, and is not intended to limit the scope of the present invention.

1‧‧‧Vortex Influenza Detector

10‧‧‧ fluid passage

101‧‧‧ fluid inlet

102‧‧‧ Fluid outlet

11‧‧‧Upstream section

12‧‧‧Downstream section

20‧‧‧Vortex blunt body

30‧‧‧Sensing rod

31‧‧‧protection

40‧‧‧ magnetic field

41‧‧‧First magnetic parts

42‧‧‧Second magnetic parts

50‧‧‧ coil

Claims (6)

A vortex flu detector includes a fluid passage, a vortex bluff body, a sensing rod, a magnetic field and a coil, wherein the fluid passage has a fluid inlet end and a fluid outlet end; the vortex blunt body is a block body The object of the shape is disposed inside the fluid passage perpendicular to the fluid flow direction to divide the inner space of the fluid passage into an upstream section and a downstream section; the sensing rod passes through the wall of the fluid passage from above And the inward insertion is disposed in the downstream section, the sensing rod is spaced apart from the eddy current blunt body by a small distance, and the sensing rod is externally covered with a protective member formed of an insulating material, and is internally disposed to assist in stabilizing the a sensing rod and an object for the sensing rod to pass; the magnetic field is disposed on the outer wall of the fluid passage, and the magnetic field line surrounds the top end of the sensing rod; the coil is disposed on the periphery of the sensing rod; After the fluid enters the upstream section through the fluid inlet end of the fluid passage, a smooth flow phenomenon is first, and then the vortex blunt body is impacted, and then a vortex phenomenon occurs in the downstream section, and the vortex phenomenon is promoted. Generating a reciprocating displacement movement of the spindle, thus cutting the magnetic field generating variation, i.e., while the induction coil generates an electromotive force. The vortex finder according to claim 1, wherein the coil is connected to a power collector. The vortex ray detector of claim 1, wherein the magnetic field is composed of a first magnetic member and a second magnetic member located on two sides of the sensing rod, and the magnetic lines of force generated are in a lateral passing mode. The vortex ray detector according to claim 1, wherein the magnetic field is formed by a magnetic member formed into a ring shape, and the generated magnetic lines are in a pattern of up and down. An application method of a vortex flu detector includes a fluid passage, a vortex bluff body, a sensing rod, a magnetic field and a coil, wherein the fluid passage has a fluid inlet end and a fluid outlet end; The eddy current blunt body is a body-shaped object, and is disposed inside the fluid passage in a state perpendicular to a fluid flow direction to divide the inner space of the fluid passage into an upstream section and a downstream section; the sensing rod is from above The wall of the fluid passage is inserted into the downstream section, and the sensing rod is spaced apart from the eddy current blunt body by a distance, and the outer surface of the sensing rod is covered with a protective member formed of an insulating material. The inner portion is configured to assist in stabilizing the sensing rod and the object for the sensing rod to pass through; the magnetic field is disposed on the outer wall of the fluid passage, and the magnetic field line surrounds the top end of the sensing rod; the coil is installed in the sense The periphery of the measuring rod; after the fluid enters the upstream section through the fluid inlet end of the fluid passage, there is a smooth flow phenomenon, and then impacts the eddy current blunt body, and then a vortex phenomenon occurs in the downstream section. And the driving rod is driven to generate a reciprocating displacement motion, so that the magnetic field is cut to change, and the electromotive force is induced in the coil, and then the signal of the voltage change is taken, after being amplified, filtered, and converted, the finishing process is performed. The application is the reference value of the flow measurement to calculate the fluid flow. An application method of a vortex flu detector includes a fluid passage, a vortex bluff body, a sensing rod, a magnetic field and a coil, wherein the fluid passage has a fluid inlet end and a fluid outlet end; The eddy current blunt body is a body-shaped object, and is disposed inside the fluid passage in a state perpendicular to a fluid flow direction to divide the inner space of the fluid passage into an upstream section and a downstream section; the sensing rod is from above The wall of the fluid passage is inserted into the downstream section, and the sensing rod is spaced apart from the eddy current blunt body by a distance, and the outer surface of the sensing rod is covered with a protective member formed of an insulating material. An internal arrangement is provided to assist in stabilizing the sensing rod and the object through which the sensing rod passes; the magnetic field is disposed on an outer wall of the fluid passage, and the magnetic field lines are covered The sensing rod top end; the coil is mounted on the periphery of the sensing rod, and the coil is connected to a power collector; after the fluid enters the upstream section through the fluid inlet end of the fluid passage, the smooth flow phenomenon occurs first. Then impinging on the eddy current blunt body, and then creating a vortex phenomenon in the downstream section, and pushing the sensing rod to generate a reciprocating displacement motion, thereby cutting the magnetic field to change, and the electromotive force is induced in the coil, and The power collector receives and collects, and after being subjected to the process of voltage regulation, rectification, and voltage transformation, it is stored as a power application.