TWI879160B - Smart flow meter with a power generation device - Google Patents

Abstract

Present invention discloses a smart flow meter with a power generation device, comprising: a main body, a wheel blade, a first rotating member, a second rotating member, a circuit module, a power generation module, and a rotation detection module; wherein the main body has an upper part and a lower part, the upper part having a bottom plate; the wheel blade is positioned on the inner side of the lower part, and the first rotating member is positioned between the wheel blade and the bottom surface of the bottom plate, multiple first magnetic elements disposed on the first rotating member; the second rotating member is positioned above the bottom plate, and multiple second magnetic elements disposed on the second rotating member, such that the first rotating member is able to drive the second rotating member to rotate through magnetic interaction between the first magnetic components and the second magnetic components; the power generation module comprises at least one induction coil, with at least one induction coil configured to sense multiple second magnetic components and generate electrical current.

Description

Smart flow meter with power generation device

The present invention relates to a smart flow meter with a power generation device, and in particular to a smart flow meter with a power generation device for detecting and calculating the flow velocity and flow rate of a fluid.

Early water meters or flow meters usually used mechanical structures, and their operation mode was that the fluid drove the blades to rotate, and then the blades drove the mechanical counter to rotate. Since the mechanical counter uses a contact transmission structure, it is easy to wear and produce errors after long-term use. In addition, the measured data cannot be output in the form of electronic signals, and the measured data must be read through manual meter reading, which causes great inconvenience in use and cannot meet the requirements of the automation system.

In order to improve the shortcomings of mechanical flowmeters, non-contact flowmeters have appeared on the market. One type of existing non-contact flowmeter generally includes a blade that can be driven to rotate by the fluid, a rotating disk connected to the blade, and a detection element for detecting the rotating motion of the rotating disk. The rotating disk has a reflective surface, which is divided into multiple reflective areas and non-reflective areas. The detection element projects a detection signal on the reflective surface of the rotating disk. When the rotating disk rotates, the reflection state of the detection signal projected by the detection element on the surface of the reflective area and the non-reflective area will change. Therefore, the detection element detects the angular velocity and direction of the rotating disk by sensing the power change of the reflected signal, so as to calculate the flow rate, flow velocity and flow direction of the fluid.

However, in the conventional non-contact flow meter, the rotor and the impeller are connected via a shaft, and the housing of the flow meter needs to be provided with a hole for the shaft to pass through, and a shaft seal to seal the hole, so that water can easily penetrate into the interior of the housing, causing the interior of the flow meter housing to become damp or flooded, causing impurities in the fluid to adhere to the reflective surface of the rotating part, or causing moss to grow on the reflective surface, resulting in a decrease in the sensitivity of the sensing signal.

In addition, in recent years, there has been a trend of combining various instruments with communication units. However, existing flow meters do not have the power generation function and are insufficient to supply the power required by circuit components other than the flow meter. Therefore, the flow meter only has the function of simply detecting the flow velocity and flow rate of the fluid, and cannot transmit the detection data to the cloud.

Furthermore, if existing smart flow meters are to be integrated with a communication module, it is necessary to install a disposable battery or connect to an external power source to supply the power required by the communication module. However, if a battery or external power source is installed in the flow meter, the interference of the outdoor ambient temperature must be considered, so it can only be used in an indoor environment.

Due to the above factors, existing flow meters have shortcomings. Therefore, how to overcome the above defects through structural design improvements has become one of the important issues that the industry wants to solve.

The technical problem to be solved by the present invention is to provide a smart flow meter with a power generation device to address the shortcomings of the existing flow meter technology.

In order to solve the above technical problems, one of the technical solutions adopted by the present invention is to provide a smart flow meter with a power generation device, which includes: a body, the body can define a central axis, the body includes an upper part and a lower part, the lower part of the body has a plurality of fluid openings for allowing fluid to enter or flow out of the lower part, the upper part of the body is connected to the upper end of the lower part, the upper part has a bottom plate, the bottom plate separates the upper part and the lower part, so that the interior of the upper part forms a closed accommodation space; a blade, accommodated in the body The invention relates to an inner part of the lower part of the housing, wherein the impeller is configured to be driven to rotate by the fluid entering the lower part; a first rotating member, arranged between the upper end of the impeller and the bottom surface of the bottom plate, wherein the first rotating member has a first rotating shaft aligned with the central axis, and a plurality of first magnetic members arranged on the first rotating member at equal angles, wherein the first rotating member is connected to the impeller and can be driven to rotate by the impeller; a second rotating member, arranged at the bottom side of the accommodating space, wherein the second rotating member has a second rotating shaft aligned with the central axis, and a plurality of first magnetic members arranged on the first rotating member at equal angles. a plurality of second magnetic members disposed on the second rotating member; a circuit module disposed in the accommodating space; a rotation detection module configured to detect the rotation of the second rotating member, the circuit module configured to calculate the flow velocity, flow rate or flow direction of the fluid according to the information of the rotation detection module detecting the rotation of the second rotating member; and a power generation module, the power generation module comprising at least one induction coil, at least one of the induction coils being disposed above the second rotating member, and at least one of the induction coils being disposed at a position corresponding to the position of the second rotating member passing through the second rotating member. The second magnetic forces are arranged on a virtual circle of the plurality of the second magnetic forces, so that when the second rotating member rotates, it can drive the plurality of the second magnetic members to rotate and pass under at least one of the induction coils, so that at least one of the induction coils is induced to generate current; wherein, when the first rotating member rotates, it can drive the plurality of the first magnetic members to rotate, and through the magnetic interaction between the plurality of the first magnetic members and the plurality of the second magnetic members, drive the second rotating member to rotate, thereby causing at least one of the induction coils of the power generation module and the plurality of the second magnetic members to be induced to generate current.

One of the beneficial effects of the present invention is that the first rotating member and the second rotating member of the present invention drive the second rotating member to rotate through the magnetic interaction between multiple first magnetic members and multiple second magnetic members, and the power generation module generates current through induction by at least one induction coil and the second magnetic member, thereby reducing the number of parts of the power generation module and simplifying the structure, and being able to generate sufficient power to supply the power required for the operation of the smart flow meter.

To further understand the features and technical contents of the present invention, please refer to the following detailed description and drawings of the present invention. However, the drawings provided are only used for reference and description and are not used to limit the present invention.

The following is an explanation of the implementation of the "non-contact smart flow meter" disclosed in the present invention through specific concrete embodiments. Technical personnel in this field can understand the advantages and effects of the present invention from the contents disclosed in this manual. The present invention can be implemented or applied through other different specific embodiments, and the details in this manual can also be modified and changed in various ways based on different viewpoints and applications without departing from the concept of the present invention. In addition, the drawings of the present invention are only simple schematic illustrations and are not depicted according to actual dimensions. Please note in advance. The following implementation will further explain the relevant technical contents of the present invention in detail, but the disclosed contents are not intended to limit the scope of protection of the present invention. In addition, the term "or" used herein may include any one or a combination of multiple of the associated listed items as appropriate.

[First embodiment]

1 to 7 , an embodiment of the present invention provides a smart flow meter 1 with a power generation device, which includes: a body 100 , a blade 200 , a first rotating member 300 , a second rotating member 400 , a circuit module 500 , a power generation module 600 , and a rotation detection module 700 .

As shown in FIGS. 1 to 3 , the main body 100 is substantially cylindrical and includes an upper portion 110 and a lower portion 120. The upper portion 110 has a sealed accommodation space 112 formed inside and a closed bottom plate 113 at the bottom. The second rotating member 400, the circuit module 500, the power generation module 600, and the rotation detection module 700 are accommodated in the accommodation space 112 of the upper portion 110. The upper end of the upper portion 110 has an upper cover 111 for sealing the accommodation space 112 of the upper portion 110.

It is worth noting that in the present embodiment, the bottom plate 113 of the upper portion 110 of the main body 100 is a closed plate, so that the fluid flowing in the lower portion 120 of the main body 100 cannot penetrate through the bottom plate 113 into the accommodating space 112 of the upper portion 110, thereby ensuring that the circuit module 500, a power generation module 600, a rotation detection module 700 and other circuit components arranged in the accommodating space 112 will not come into contact with the fluid. Furthermore, in this embodiment, the bottom plate 113 of the upper portion 110 is provided with a plurality of magnetically conductive components 130, the plurality of magnetically conductive components 130 are made of a high magnetic permeability material, and the plurality of magnetically conductive components 130 are arranged at equal angle intervals on a virtual circle centered on the central axis C passing through the main body 100.

The lower portion 120 of the body 100 is connected to the bottom side of the bottom plate 113 of the upper portion 110, and a space for accommodating the blade 200 is formed inside the lower portion 120, and a plurality of fluid openings 121 and 122 are provided on the side wall of the lower portion 120 for allowing fluid to enter the space inside the lower portion 120 to drive the blade 200 to rotate. The plurality of fluid openings on the side wall of the lower portion 120 include a plurality of upper rows of fluid openings 121 arranged on the upper section of the side wall of the lower portion 120, and a plurality of fluid openings 122 arranged on the lower section of the side wall of the lower portion 120. The multiple fluid openings 121 in the upper row and the multiple fluid openings 122 in the lower row are arranged on the side wall of the lower portion 120 in an inclined manner, and the inclination directions of the fluid openings 121 in the upper row and the multiple fluid openings 122 in the lower row are different from each other. Therefore, when the fluid flows through the lower portion 120 in different directions, vortices can be formed inside the lower portion 120 and drive the impeller 200 to rotate forward or reverse.

As shown in FIG1 , when the smart flow meter 1 with a power generating device is used, the body 100 of the smart flow meter 1 with a power generating device is placed on the upper part of a mounting seat 800 with the lower part 120 facing downward, and the mounting seat 800 has a mounting portion 810 for placing the body 100, and a fluid inlet 820 and a fluid outlet 830 arranged at opposite ends of the mounting seat 800. The lower part 120 of the body 100 can be accommodated in the mounting portion 810 of the mounting seat 800, and the fluid flowing in the mounting seat 800 can enter the interior of the lower part 120 from the plurality of fluid openings 121, 122 on the lower part 120, thereby driving the impeller 200 to rotate.

The first rotating member 300 is accommodated inside the lower portion 120 between the impeller 200 and the bottom surface of the bottom plate 113. In this embodiment, the first rotating member 300 is a substantially circular plate body, and the center of the first rotating member 300 has a first rotating shaft 310, and the lower end of the first rotating shaft 310 is connected to the impeller 200, so that the first rotating member 300 can be driven to rotate by the impeller 200. The first rotating member 300 is provided with a plurality of first magnetic members 320, and the plurality of first magnetic members 320 are magnets, and the plurality of first magnetic members 320 are arranged at equal angles on a virtual circle centered on the central axis C. Furthermore, preferably, the diameter of the virtual circle in which the first magnetic members 320 are arranged can be configured to correspond to the virtual circle in which the magnetic conductive components 130 are arranged, so that the magnetic lines of force of the first magnetic members 320 can reach the accommodation space 112 above the base plate 113 through conduction of the magnetic conductive components 130 .

The second rotating member 400 is disposed at the bottom side of the accommodation space 112 at the upper portion of the body 100. The second rotating member 400 has a second rotating shaft 410 that contacts the top surface of the bottom plate 113 and is aligned with the central axis C of the body 100, so that the second rotating member 400 can rotate around the second rotating shaft 410. A plurality of second magnetic members 420 are disposed on the second rotating member 400, and the bottom ends of the plurality of second magnetic members 420 are adjacent to the top surface of the bottom plate 113. The plurality of second magnetic members 420 on the second rotating member 400 are arranged at equal angles on a virtual circle centered on the central axis C, and the virtual circle in which the plurality of second magnetic members 420 are arranged corresponds to the virtual circle in which the first magnetic member 320 and the magnetic conductive member 130 are arranged.

The plurality of second magnetic members 420 are made of magnets, so that when the first rotating member 300 rotates, the plurality of second magnetic members 420 can be driven to rotate around the central axis C by the magnetic force of the plurality of first magnetic members 320, thereby driving the second rotating member 400 to rotate.

The present invention, through the above-mentioned configuration, does not need to connect the impeller 200 and the second rotating member 400 through a shaft, and can drive the second rotating member 400 to rotate through a non-contact magnetic transmission method, and then drive the power generation module 600 and the rotation detection module 700 to operate through the second rotating member 400. Therefore, it is unnecessary to set a hole for the shaft to pass through the bottom plate 113, and it is even unnecessary to set a shaft seal for sealing the gap between the shaft and the hole. Therefore, it can ensure that water will not enter the accommodating space 112 of the main body 100, and can also reduce the friction resistance of the impeller 200 and the second rotating member 400 to rotate.

The following further describes the arrangement of the first magnetic member 320 and the second magnetic member 420 on the first rotating member 300 and the second rotating member 400 and the plurality of magnetic conductive components 130 on the bottom plate 113 in this embodiment, and the operating principle of the non-contact magnetic transmission adopted by the present invention.

As shown in FIG. 4 , in this embodiment, the first rotating member 300 is roughly a circular plate, and the first rotating member 300 can be made by plastic injection molding. The plurality of first magnetic members 320 are roughly cylindrical magnets, and the plurality of first magnetic members 320 can be arranged on the first rotating member 300 by injection coating means, or a plurality of mounting holes matching the first magnetic members 320 are first arranged on the first rotating member 300, and the plurality of first magnetic members 320 are installed in the plurality of mounting holes on the first rotating member 300. The centers of the plurality of first magnetic members 320 are arranged at equal angles on a virtual circle centered on the central axis C.

It is worth noting that in this embodiment, the number of the plurality of first magnetic members 320 on the first rotating member 300 is limited to an even number, and the magnetic poles of every two adjacent first magnetic members 320 are in opposite directions, so every two adjacent first magnetic members 320 of different polarities constitute a magnetic pole pair.

As shown in FIG5 , a plurality of second magnetic members 420 are disposed on the second rotating member 400. The combination of the plurality of second magnetic members 420 and the second rotating member 400 is similar to that of the first rotating member 300 and the first magnet, and therefore will not be described again in this specification. The number of the plurality of second rotating members 400 is also limited to an even number, and the magnetic poles of every two adjacent second magnetic members 420 are in opposite directions, and together form a magnetic pole pair.

In this embodiment, a plurality of magnetically conductive components 130 are disposed on the bottom plate 113 of the upper portion 110 of the main body 100. The plurality of magnetically conductive components 130 are made of a high magnetic permeability material (such as iron, iron-nickel alloy, etc.), and the center points of the plurality of magnetically conductive components 130 are arranged on a virtual circle corresponding to the arrangement positions of the plurality of first magnetic components 320 and the plurality of second magnetic components 420, so that they can be used to conduct the magnetic lines of force of the plurality of first magnetic components 320 and the plurality of second magnetic components 420.

It is worth noting that, in this embodiment, the number of the first magnetic members 320 and the second magnetic members 420 must be an even number, and the number of the magnetic conductive components 130 is limited to half of the total number of the first magnetic members 320 and the second magnetic members 420. For example, in this embodiment, the number of the first magnetic members 320 is 16, the number of the second magnetic members 420 is 4, and the number of the magnetic conductive components 130 is 10.

As shown in FIG. 7 , in this embodiment, the plurality of first magnetic members 320 on the first rotating member 300 can together form 8 sets of magnetic pole pairs, and the plurality of second magnetic members 420 on the second rotating member 400 can together form two sets of magnetic pole pairs. The plurality of magnetic conductive components 130 are disposed between the plurality of first magnetic members 320 and the plurality of second magnetic members 420, and the number of the plurality of magnetic conductive components 130 is one-half of the total number of the first magnetic members 320 and the second magnetic members 420. In other words, the number of the plurality of magnetic conductive components 130 is the total number of magnetic pole pairs formed by the plurality of first magnetic members 320 and the number of magnetic pole pairs formed by the plurality of second magnetic members 420.

The magnetically conductive component 130 is configured to be used as a modulator of the magnetic force of the first magnetic component 320 and the second magnetic component 420. When the first rotating component 300 rotates, the plurality of magnetically conductive components 130 can sense the magnetic lines of force generated by the plurality of first magnetic components 320, thereby generating harmonic components of the magnetic lines of force of the first magnetic components 320, and further generating mutual repulsion with the magnetic lines of force of the plurality of second magnetic components 420, thereby generating an electromagnetic torque, and driving the second rotating component 400 to rotate in a direction opposite to the first rotating component 300.

Through the above configuration, each time the first rotating member 300 rotates a magnetic pole pair angle (i.e., the total interval angle of the two first magnetic members 320), the second rotating member 400 will also correspondingly rotate a magnetic pole pair angle (i.e., the total interval angle of the two second magnetic members 420), that is, the number of magnetic pole pairs rotated when the first rotating member 300 rotates one circle will be equal to the number of magnetic pole pairs rotated by the second rotating member 400. In this embodiment, since the number of magnetic pole pairs of the first rotating member 300 is 8 groups, and the number of magnetic pole pairs of the second rotating member 400 is 2 groups, when the first rotating member 300 rotates one circle, the second rotating member 400 can rotate four circles, resulting in a speed ratio of 1:4.

The first rotating member 300 and the second rotating member 400 of the present invention adopt a non-contact magnetic transmission method, which can produce the following benefits: (1) the first rotating member 300 and the second rotating member 400 are not connected by a shaft, so the bottom plate 113 does not need to be opened to avoid the risk of water leakage causing the accommodating space 112 of the upper part 110 of the main body 100 to enter the water; (2) because the first rotating member 300 and the second rotating member 400 adopt a non-contact transmission and there is no friction between the shaft seal and the rotating shaft, the friction loss of the transmission is reduced, and The movement sensitivity of the second rotating member 400 is improved; and (3) the purpose of variable speed transmission can be achieved without providing a transmission gear set or a speed change mechanism between the first rotating member 300 and the second rotating member 400, and an action amplification effect is provided between the first rotating member 300 and the second rotating member 400, so that the rotation speed of the second rotating member 400 can be several times that of the first rotating member 300, thereby improving the power generation power of the power generation module 600 and improving the detection sensitivity of the rotation detection module 700.

Next, the structure and operation of the circuit module 500, the power generation module 600, and the rotation detection module 700 used in this embodiment are introduced. As shown in FIG2 and FIG3, in this embodiment, the circuit module 500 includes a printed circuit board 510, a circuit component 520 disposed on the printed circuit board 510, a bracket 530 disposed above the printed circuit board 510, and a display component 540 disposed on the bracket 530.

The circuit module 500 is accommodated in the accommodation space 112 of the upper part 110, wherein the printed circuit board 510 is disposed above the second rotating member 400. The circuit assembly 520 is disposed on the printed circuit board 510, and the circuit assembly 520 can include a microprocessor and a plurality of different electronic components. More specifically, the circuit assembly 520 can include but is not limited to a microprocessor for computing and processing data, a memory and storage unit for storing data, and various control circuits, and a communication unit and antenna for communicating and transmitting data. The bracket 530 is disposed above the printed circuit board 510, and the height of the top of the bracket 530 is close to the bottom surface of the upper cover 111, and the display assembly 540 is disposed at the top of the bracket 530, so that the display assembly 540 is installed at a position close to the bottom surface of the upper cover 111. In addition, in this embodiment, the upper cover 111 can include a transparent plate, so that the image of the data or operation screen displayed by the display assembly 540 can be displayed on the outer side of the upper cover 111.

In this embodiment, the power generation module 600 includes at least one induction coil 610, a battery 620 for storing electricity, and a charge and discharge control circuit not shown in the figure. Among them, at least one induction coil 610 is arranged on the side of the printed circuit board 510 facing the second rotating member 400, so that at least one induction coil 610 is located above the second rotating member 400. And the position where at least one induction coil 610 is arranged corresponds to the virtual circle passing through the plurality of second magnetic members 420, so that when the second rotating member 400 rotates, the plurality of second magnetic members 420 will pass under the induction coil 610. The induction coil 610 can generate current by induction with the magnetic field of the plurality of second magnetic members 420. The battery 620 is disposed on the printed circuit board 510 , and the current generated by the plurality of inductive coils 610 can be stored in the battery 620 to supply the power required for the operation of the smart flow meter 1 .

The characteristics of the power generation module 600 adopted in this embodiment are that the power generation module 600 generates electricity by induction of the induction coil 610 and the second magnetic members 420 of the second rotating member 400, and no additional movable components and transmission components are required, so the structure of the power generation module 600 is simple. In addition, since the first rotating member 300 and the second rotating member 400 are transmitted by non-contact magnetic transmission, the rotation speed of the second rotating member 400 can be increased, thereby increasing the power generation power of the power generation module 600, and enabling the circuit module 500 to obtain sufficient power supply without an external power supply, and the circuit module 500 can have more complex functions.

The rotation detection module 700 is configured to detect the rotation of the second rotating member 400, so as to provide the circuit module 500 with the calculation of the flow rate, flow velocity, flow direction and other parameters of the fluid. The rotation detection module 700 includes at least one first detection member 710 and at least one second detection member 720. Among them, at least one first detection member 710 is arranged on the second rotating member 400, so that when the second rotating member 400 rotates, at least one first detection member 710 can rotate together. The second detection member 720 is configured to cooperate with the first detection member 710 to detect the rotation of the second rotating member 400. At least one second detection member 720 can be disposed on a side of the printed circuit board 510 facing the second rotating member 400 , and the position where the at least one second detection member 720 is disposed corresponds to the rotation path of the first rotating member 300 .

In this embodiment, at least one first detection element 710 can be a magnet or a magnetic material, and at least one second detection element 720 can be a magnetic sensor (e.g., a Hall sensor). Therefore, when the first rotating element 300 rotates, when at least one first detection element 710 rotates to a position corresponding to the second detection element 720, the second detection element 720 can generate a detection signal. The circuit module 500 can calculate the angular velocity, number of revolutions, and rotation direction of the second rotating element 400 according to the detection signals of the first detection element 710 and the second detection element 720, and further calculate the flow rate, flow rate, and flow direction of the water flow.

It should be noted that, in this embodiment, the first detection element 710 and the second detection element 720 of the rotation detection module 700 disclosed are a combination of a magnetic element and a magnetic sensor, but the present invention is not limited thereto. For example, at least one first detection element 710 and at least one second detection element 720 of the rotation detection module 700 can be a combination of a mechanical trigger and a micro switch, or a combination of an optical transmitter and an optical receiver. In addition, the rotation detection module 700 can also be a rotation encoder (not shown) connected to the second rotating shaft 410 of the second rotating member 400, or the rotation detection module 700 can be a detection circuit built into the circuit module 500, and the detection circuit is coupled to the multiple induction coils 610 of the power generation module 600. It can detect and calculate the angular velocity, number of rotations, and direction of the second rotating member 400 by detecting the voltage changes of the multiple induction coils 610.

[Second embodiment]

As shown in Figures 8 to 10, the second embodiment of the smart flow meter with a power generation device of the present invention is shown. It should be noted that the basic structure of this embodiment is similar to that of the first embodiment, so the similar technical contents of the two embodiments will not be repeated.

As shown in FIG8 , in this embodiment, the smart flow meter 1 is different from the first embodiment in that a plurality of first magnetic members 330 are disposed on the first rotating member 300, and a plurality of second magnetic members 430 equal in number to the first magnetic members 330 are disposed on the second rotating member 400 at positions corresponding to the plurality of first magnetic members 330, and the bottom plate 113 of the upper portion 110 of the main body 100 is not provided with the magnetic conductive member, so that the magnetic force of the first magnetic member 330 directly interacts with the magnetic force of the second magnetic member 430.

As shown in FIG9 and FIG10, in this embodiment, the number of the first magnetic members 330 and the second magnetic members 430 on the first rotating member 300 and the second rotating member 400 is equal, and when the first rotating member 300 rotates, the shear force generated by the attraction and repulsion magnetic force between the first magnetic members 330 and the second magnetic members 430 can generate a magnetic torque, thereby rotating the second rotating member 400. It is worth noting that in this embodiment, the rotation direction of the second rotating member 400 is consistent with that of the first rotating member 300, and the speed ratio of the second rotating member 400 to the first rotating member 300 is 1:1.

[Beneficial Effects of Embodiments]

One of the beneficial effects of the present invention is that the first rotating member 300 and the second rotating member 400 are driven to rotate by the magnetic interaction between multiple first magnetic members 320 and multiple second magnetic members 420, and the power generation module 600 generates current through induction by at least one induction coil 610 and the second magnetic member 420, thereby reducing the number of parts of the power generation module 600 and simplifying the structure, and being able to generate sufficient power to supply the power required for the operation of the smart flow meter.

Furthermore, another beneficial effect of the present invention is that the first rotating member 300 and the second rotating member 400 of the present invention adopt non-contact magnetic transmission, so that there is no need to set a rotating shaft for transmission between the impeller 200 and the second rotating member 400, and there is no need to set holes and shaft seals for penetrating the rotating shaft on the bottom plate 113. On the one hand, it can ensure that the accommodating space 112 of the upper part 110 of the main body 100 is sealed and waterproof, and on the other hand, it simplifies the transmission structure of the impeller 200 and the second rotating member 400, and reduces friction loss, thereby improving the sensitivity and accuracy of the flow meter.

The contents disclosed above are only preferred feasible embodiments of the present invention and are not intended to limit the scope of the patent application of the present invention. Therefore, all equivalent technical changes made using the contents of the specification and drawings of the present invention are included in the scope of the patent application of the present invention.

1: Smart flow meter 100: Body 110: Upper part 111: Upper cover 112: Accommodation space 113: Bottom plate 120: Lower part 121: Fluid opening 122: Fluid opening 130: Magnetic component 200: Impeller 300: First rotating part 310: First rotating shaft 320, 330: First magnetic component 400: Second rotating part 410: Second rotating shaft 420, 430: Second magnetic component 500: Circuit module 510: Printed circuit board 520: Circuit assembly 530: Bracket 540: Display assembly 600: Power generation module 610: Induction coil 620: Battery 700: Rotation detection module 710: First detection part 720: Second detection part 800: Mounting seat 810: Mounting part 820: Fluid inlet 830: Fluid outlet C: Center axis

FIG1 is a three-dimensional schematic diagram of a first embodiment of a smart flow meter with a power generation device according to the present invention.

FIG. 2 is a schematic three-dimensional exploded view of the first embodiment of the smart flow meter with a power generation device of the present invention.

FIG3 is a schematic cross-sectional diagram of the first embodiment of the smart flow meter with a power generation device according to the present invention.

FIG. 4 is a schematic top view of the first rotating member used in the first embodiment of the present invention.

FIG. 5 is a schematic top view of the second rotating member used in the first embodiment of the present invention.

FIG6 is a schematic top view of the upper portion of the main body used in the first embodiment of the present invention.

FIG. 7 is a schematic diagram showing the operation principle of the magnetic zone motion method between the first rotating member and the second rotating member used in the first embodiment of the present invention.

FIG8 is a schematic cross-sectional diagram of the second embodiment of the smart flow meter with a power generation device according to the present invention.

FIG. 9 is a schematic top view of the first rotating member used in the second embodiment of the present invention.

FIG. 10 is a schematic top view of the second rotating member used in the second embodiment of the present invention.

1: Smart flow meter

100:Entity

110: Upper part

111: Upper cover

112: Storage space

113: Base plate

120: Lower part

121: Fluid opening

122: Fluid opening

130: Magnetic conductive components

200: Blades

300: First rotating member

310: First axis

320: First magnetic part

400: Second rotating member

410: Second axis

420: Second magnetic part

500: Circuit module

510: Printed circuit board

520: Circuit components

530: Bracket

540: Display component

600: Power generation module

610: Induction coil

620:Battery

700: Rotation detection module

710: First detection device

720: Second detection device

Claims (8)

A smart flow meter with a power generation device, comprising: A body, the body can define a central axis, the body includes an upper part and a lower part, the lower part of the body has a plurality of fluid openings for fluid to enter or flow out of the lower part, the upper part of the body is connected to the upper end of the lower part, the upper part has a bottom plate, the bottom plate separates the upper part and the lower part, so that the interior of the upper part forms a closed accommodation space; A blade, accommodated in the interior of the lower part of the body, the blade is configured to be driven to rotate by the fluid entering the lower part; A first rotating member is arranged between the upper end of the blade and the bottom surface of the bottom plate, the first rotating member has a first rotating shaft aligned with the central axis, and a plurality of first magnetic members arranged on the first rotating member at equal angle intervals, the first rotating member is connected to the blade and can be driven to rotate by the blade; A second rotating member is arranged at the bottom side of the accommodating space, the second rotating member has a second rotating shaft aligned with the central axis, and a plurality of second magnetic members arranged on the second rotating member at equal angle intervals; A circuit module is arranged in the accommodating space; A rotation detection module configured to detect the rotation of the second rotating member, the circuit module configured to calculate the flow velocity, flow rate or flow direction of the fluid according to the information of the rotation detection module detecting the rotation of the second rotating member; and A power generation module, the power generation module includes at least one induction coil, at least one of the induction coils is arranged above the second rotating member, and at least one of the induction coils corresponds to a virtual circle passing through a plurality of the second magnetic members, so that when the second rotating member rotates, it can drive a plurality of the second magnetic members to rotate through at least one of the induction coils, so that at least one of the induction coils is induced to generate current; When the first rotating member rotates, it can drive the plurality of the first magnetic members to rotate, and through the interaction of the magnetic forces of the plurality of the first magnetic members and the plurality of the second magnetic members, the second rotating member is driven to rotate, thereby causing at least one of the induction coils and the plurality of the second magnetic members of the power generation module to generate current by induction; Wherein, the power generation module further includes a battery, which is coupled to at least one of the induction coils to store the current generated by the plurality of the induction coils, and the circuit module includes a printed circuit board located above the second rotating member, and at least one of the induction coils is arranged on a side of the printed circuit board facing the second rotating member. An intelligent flow meter with a power generation device as described in claim 1, wherein the rotation detection module includes at least one first detection element arranged on the second rotating element, and at least one second detection element arranged at a position corresponding to the rotation path of the first detection element in the accommodating space, and the rotation detection module can detect the rotation movement of the second rotating element through the cooperation of at least one first detection element and at least one second detection element; wherein at least one first detection element and at least one second detection element can be selected from: a paired magnetic element and a magnetic sensor, or a paired trigger and a micro switch, or a paired optical transmitter and optical receiver, or a paired optical reflector and a photoelectric switch combination. An intelligent flow meter with a power generation device as described in claim 1, wherein the rotation detection module is a detection circuit built into the circuit module, the detection circuit is coupled to at least one of the induction coils of the power generation module, and the detection circuit is configured to detect the rotational movement of the second rotating member by detecting voltage changes of at least one of the induction coils. An intelligent flow meter with a power generation device as described in claim 1, wherein the rotation detection module is a rotation encoder connected to the second rotating shaft of the second rotating member, and the rotation encoder is configured to detect the rotation movement of the second rotating shaft. A smart flow meter with a power generation device as described in claim 1, wherein the number of the first magnetic elements is configured as an even number, and the magnetic poles of every two adjacent first magnetic elements are in opposite directions; the number of the second magnetic elements is configured as an even number, and the magnetic poles of every two adjacent second magnetic elements are in opposite directions. A smart flow meter with a power generation device as described in claim 5, wherein the number of the first plurality of magnetic components is equal to the number of the second plurality of magnetic components. As described in claim 5, the smart flow meter with a power generation device, wherein a plurality of magnetic conductive components are also arranged on the base plate between the plurality of the first magnetic components and the plurality of the second magnetic components. A smart flow meter with a power generation device as described in claim 7, wherein the number of the plurality of magnetic conductive components is limited to half of the total number of the plurality of first magnetic components and the plurality of second magnetic components.

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