Vertical turbine flowmeter device

Abstract

The utility model discloses a vertical turbine flowmeter device, and relates to the technical field of flow metering, the vertical turbine flowmeter device comprises a shell, an accommodating cavity is formed in the shell, a main rotor and an auxiliary rotor are rotatably arranged in the accommodating cavity, the main rotor and the auxiliary rotor are stacked up and down, and inclined blades are arranged on the main rotor and the auxiliary rotor; the motor further comprises a control unit, a driving mechanism and a rotating speed collecting unit, the control unit is electrically connected with the driving mechanism and the rotating speed collecting unit, the driving mechanism is arranged on the shell and used for driving the main rotor to rotate, and the rotating speed collecting unit is used for collecting the rotating speed of the main rotor and the rotating speed of the auxiliary rotor. The flowmeter has high-stability zero value detection and calibration, when fluid flow is smaller than nominal flow, the magnet on the main rotor is driven by the electromagnetic coil to rotate, and the problem that a traditional flowmeter does not rotate when small flow exists due to friction force, and the small flow cannot be detected is solved.

Description

Technical Field

[0001] This utility model belongs to the field of flow measurement technology, and specifically relates to a vertical turbine flow meter device. Background Technology

[0002] A flow meter is a device used to measure the flow rate of fluid in a pipeline. There are many types of flow meters, each with different measurement principles. Some flow meters rely entirely or partially on the fluid's flow power to drive certain components, thereby powering the flow meter's measurement mechanism. Flow meters that rely entirely on fluid power include volumetric flow meters, turbine flow meters, and float flow meters; flow meters that rely partially on fluid power include differential pressure flow meters, vortex flow meters, and thermal mass flow meters.

[0003] Existing high-precision flow meters refer to those with small measurement errors; wide-range flow meters can maintain accuracy across the minimum to maximum flow range.

[0004] For example, Coriolis mass flow meters, ultrasonic flow meters, vortex flow meters, electromagnetic flow meters, turbine flow meters, etc., are all high-cost flow meter products that require an external power supply, and they all exhibit instability when detecting the zero point value of the flow. Utility Model Content

[0005] The purpose of this invention is to overcome the problems and deficiencies in the existing technology and to provide a vertical turbine flow meter device.

[0006] To achieve the above-mentioned objectives, this utility model adopts the following technical solution:

[0007] A vertical turbine flow meter device includes:

[0008] A housing, the interior of which is formed with a receiving cavity;

[0009] The main rotor is rotatably disposed within the receiving cavity;

[0010] The secondary rotor is rotatably disposed within the receiving cavity;

[0011] The main rotor and the auxiliary rotor are stacked one on top of the other, and both the main rotor and the auxiliary rotor are provided with inclined blades;

[0012] It also includes a control unit, a drive mechanism, and a speed acquisition unit. The control unit is electrically connected to the drive mechanism and the speed acquisition unit, respectively. The drive mechanism is mounted on the housing and is used to drive the main rotor to rotate. The speed acquisition unit is used to acquire the speeds of the main rotor and the auxiliary rotor.

[0013] Further technology of this utility model:

[0014] Preferably, pipe sections are provided on both sides of the housing as fluid inlet and fluid outlet for connecting the internal receiving cavity. The fluid inlet is connected to the main rotor and the fluid outlet is connected to the auxiliary rotor. Fluid flows in through the fluid inlet and flows out through the fluid outlet after passing through the receiving cavity.

[0015] Preferably, the housing is further provided with an impeller box, which encloses the main rotor and the auxiliary rotor. The impeller box is provided with a guide groove to control the fluid to enter and flow out at an inclined angle.

[0016] Preferably, the impeller box is a cavity formed by an upper impeller box and a lower impeller box, and the enclosed end is sealed by a sealing ring. Both the upper and lower impeller boxes are provided with guide grooves, and the guide grooves on the upper and lower impeller boxes have opposite guide directions.

[0017] Preferably, a hollow bearing sleeve is sandwiched between the upper impeller box and the lower impeller box. An auxiliary rotor shaft is provided above the bearing sleeve, and the auxiliary rotor is set above the bearing sleeve through the auxiliary rotor shaft. A main rotor shaft is provided below the bearing sleeve, and the main rotor is set above the bearing sleeve through the auxiliary rotor shaft.

[0018] Preferably, the main rotor shaft and the auxiliary rotor shaft are coaxially arranged and independent of each other.

[0019] Preferably, the fluid inlet is connected to the guide groove of the lower impeller box, and the fluid flows into the main rotor through the fluid inlet and the guide groove of the lower impeller box; the fluid outlet is connected to the guide groove of the upper impeller box, and the fluid flows into the secondary rotor through the main rotor, the secondary rotor, the fluid inlet, the guide groove of the upper impeller box and the fluid outlet.

[0020] Preferably, a valve is installed at the fluid outlet, and a PCB permanent magnet motor and a drive gear set are installed on the outer wall of the impeller box. A screw nut is installed on the drive gear set, and the screw nut is connected to a pressure relief lever. The pressure relief lever is connected to the valve. The PCB permanent magnet motor drives the gear set and the screw nut to drive the pressure relief lever to move the valve up and down, opening and closing the valve.

[0021] Preferably, the drive mechanism includes at least one set of lower electromagnetic coils, which are arranged around the lower part of the housing. At least one magnet is provided on the main rotor. Below the dividing flow rate, the main rotor is driven by the lower electromagnetic coils below the housing to rotate the magnet on the main rotor.

[0022] Preferably, the flow meter device further includes a power generation and energy storage device. An upper electromagnetic coil is provided above the housing, and at least one magnet is provided on the secondary rotor. When the flow rate is above the boundary flow rate, the upper electromagnetic coil generates electricity by having its magnetic lines of force cut by the magnet on the secondary rotor, which then stores the energy in the energy storage device.

[0023] The beneficial effects of this utility model are:

[0024] The flow meter of this invention features highly stable zero-point detection and calibration. When the fluid flow rate is less than the nominal flow rate, the magnet on the main rotor is driven to rotate by the electromagnetic coil. This overcomes the problem that traditional flow meters do not rotate when the flow rate is small due to friction, thus making it impossible to detect small flow rates. Furthermore, it avoids zero-point drift caused by factors such as bearing wear, ensuring the accuracy of the flow meter during long-term use and achieving reliable precision correction.

[0025] It features self-powered operation, which reduces costs and significantly increases the lifespan of the flow meter. Attached Figure Description

[0026] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0027] Figure 1 This is a front cross-sectional structural diagram of the vertical turbine flow meter device of this utility model;

[0028] Figure 2 This is a front view schematic diagram of the vertical turbine flow meter device structure of this utility model;

[0029] Figure 3 This is the utility model Figure 2 A schematic diagram of the AA lateral cross-sectional structure in the image;

[0030] Figure 4 This is a top view schematic diagram of the vertical turbine flow meter device structure of this utility model;

[0031] Figure 5 This is a schematic diagram of the internal structure of the shell of this utility model;

[0032] Figure 6 This is a utility model Figure 5 Schematic diagram of the structure after removing the lower impeller box;

[0033] Figure 7 This is a schematic diagram of the main rotor and auxiliary rotor structure of this utility model;

[0034] In the attached figures, the following labels are used:

[0035] 10. Housing; 11. Main rotor; 12. Auxiliary rotor; 13. Blade; 14. Fluid inlet; 15. Fluid outlet; 16. Upper impeller box; 17. Lower impeller box; 18. Guide groove; 19. Bearing sleeve; 20. Main rotor shaft; 21. Auxiliary rotor shaft; 22. Upper electromagnetic coil; 23. Lower electromagnetic coil; 24. Magnet; 26. Valve; 27. PCB permanent magnet motor; 28. Drive gear set; 29. ​​Screw nut; 30. Pressure relief lever. Detailed Implementation

[0036] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be further described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0037] like Figure 1-7 This embodiment provides a vertical turbine flow meter device, including:

[0038] The housing 10 has an internal cavity.

[0039] The main rotor 11 is rotatably disposed within the receiving cavity;

[0040] The auxiliary rotor 12 is rotatably disposed within the receiving cavity;

[0041] The main rotor 11 and the auxiliary rotor 12 are stacked one on top of the other. Both the main rotor 11 and the auxiliary rotor 12 are provided with inclined blades 13, and the inclined blades 13 of the main rotor 11 and the auxiliary rotor 12 are inclined in opposite directions. In this embodiment, the inclination angle of the blades 13 is selected as 35°.

[0042] It also includes a control unit, a drive mechanism, and a speed acquisition unit. The control unit is electrically connected to the drive mechanism and the speed acquisition unit, respectively. The drive mechanism is mounted on the housing 10 and is used to drive the main rotor 11 to rotate. The speed acquisition unit is used to acquire the speeds of the main rotor 11 and the auxiliary rotor 12.

[0043] The housing 10 has pipe sections on both sides, which serve as fluid inlet 14 and fluid outlet 15 to connect to the internal receiving cavity. Fluid flows in through fluid inlet 14 and flows out through fluid outlet 15 after passing through the receiving cavity.

[0044] The fluid inlet 14 is connected to the main rotor 11, and the fluid outlet 15 is connected to the auxiliary rotor 12.

[0045] The flow meter device also includes an impeller box, which is disposed inside the housing 10. The impeller box encloses the main rotor 11 and the auxiliary rotor 12. The impeller box is provided with a guide groove 18 to control the fluid to enter and exit at an inclined angle.

[0046] The impeller box is a cavity formed by the upper impeller box 16 and the lower impeller box 17. The enclosed end is sealed by a sealing ring. Both the upper impeller box 16 and the lower impeller box 17 are provided with flow guide grooves 18, and the flow guide directions of the flow guide grooves 18 on the upper impeller box 16 and the lower impeller box 17 are opposite.

[0047] Lower impeller box: The main rotor is driven by the lower electromagnetic coil 23 to drive the four magnets 24 on the rotor impeller. Below the boundary flow rate, the control unit controls the electromagnetic coil 22 to be energized. The electromagnetic coil 22 acts on the main rotor 11, driving the main rotor to rotate. At the same time, the speed acquisition unit detects the rotation frequency and time of the main rotor. The fluid in the lower guide channel can stably drive the main rotor to rotate without affecting the measurement due to fluid fluctuations, and can achieve accurate measurement of the flow meter at zero flow and small flow.

[0048] Furthermore, the bearing wear coefficients of the main rotor 11 and auxiliary rotor 12 are determined by comparing with a standard time. For example, tests are performed at regular intervals; if the time decreases, it indicates wear on the bearings corresponding to the rotors. By subtracting the wear coefficient from the flow formula, the accuracy of flow measurement can be ensured. Through the above structural design and measurement method, the service life of the flow meter can be estimated, and self-correcting flow accuracy can be achieved.

[0049] Above the threshold flow rate, the electromagnetic coil 22 receives power from the four magnets 24 on the rotor impeller cutting magnetic lines of force to generate electricity, which is then stored in the energy storage device to supply power to the controller.

[0050] Upper Impeller Box: The auxiliary rotor generates electricity via the upper electromagnetic coil 22, which is cut by the magnetic lines of force by eight magnets 24 on the rotor impeller, thus storing energy in the accumulator. Simultaneously, a flow sensor detects the rotation frequency and time of the rotor impeller. The upper guide channel stably guides the fluid from the rotating rotor impeller, improving flow metering due to the orderly drainage. Furthermore, it generates electromagnetic damping above the flow threshold, reducing the rotor impeller speed, increasing the overload flow threshold, and extending bearing life.

[0051] It should be noted that both the lower electromagnetic coil 23 and the upper electromagnetic coil 22 are PCB board electromagnetic coils.

[0052] The combination and coordination of the upper and lower rotor impellers and the impeller box guide channels ensure optimal fluid metering. This includes the angles of the upper and lower rotor impellers, the angle of the impeller box guide channels, the angle of the main rotor relative to the angle of the lower impeller box guide channels that introduce the flow, and the angle of the auxiliary rotor relative to the angle of the impeller box flow outlet guide channels.

[0053] In this embodiment, the housing 10 is cylindrical with two pipe sections connected on both sides. The central portion allows free rotation of the main rotor 11 and the auxiliary rotor 12. Fluid enters through the fluid inlet 14. Below the boundary flow rate in the lower impeller box 17, the main rotor 11 is driven to rotate by the electromagnetic coil 23 and the introduced fluid. Above the boundary flow rate, the introduced fluid cuts magnetic lines of force to generate electricity and measures the fluid flow rate. Then, the fluid coupling drives the auxiliary rotor 12 to rotate, and the fluid is discharged from the upper impeller box 16 and exited through the fluid outlet 15.

[0054] It should be noted that the above-mentioned boundary flow rate refers to the critical flow rate value that divides the flow meter into high and low flow rate ranges. The allowable error range varies for different flow rate ranges.

[0055] The upper impeller box 16 and the lower impeller box 17 are sandwiched together with a hollow bearing sleeve 19. A secondary rotor shaft 21 is provided above the bearing sleeve 19. The secondary rotor 12 is set above the bearing sleeve 19 through the secondary rotor shaft 21. A main rotor shaft 20 is provided below the bearing sleeve 19. The main rotor 11 is set above the bearing sleeve 19 through the secondary rotor shaft 21.

[0056] The main rotor 11 and the auxiliary rotor 12 are provided with clearance by the bearing sleeve 19. The bearing sleeve 19 is sandwiched in the middle by the upper impeller box 16 and the lower impeller box 17 and connected into a whole by ultrasonic welding.

[0057] The main rotor shaft 20 and the auxiliary rotor shaft 21 are coaxially arranged vertically and are independent of each other.

[0058] The fluid inlet 14 is connected to the guide groove 18 of the lower impeller box 17, and the fluid flows into the main rotor 11 through the fluid inlet 14 and the guide groove 18 of the lower impeller box 17; the fluid outlet 15 is connected to the guide groove 18 of the upper impeller box 16, and the fluid flows into the secondary rotor 12 through the main rotor 11, the secondary rotor 12, the fluid inlet 14, the guide groove 18 of the upper impeller box 16 and the fluid outlet 15.

[0059] Both the main rotor 11 and the auxiliary rotor 12 are configured as turbine rotors, with the main rotor 11 positioned upstream of the auxiliary rotor 12. By configuring the main rotor 11 and the auxiliary rotor 12 to be tightly coupled, the main rotor 11 and the auxiliary rotor 12 rotate in opposite directions. The fluid flowing out of the main rotor 11 affects the inlet incident angle of the auxiliary rotor 12, thereby hydraulically coupling the two rotors. More specifically, the fluid vortex conditions of the main rotor 11 have opposite effects on the auxiliary rotor 12. If the main rotor 11 decelerates due to the vortex effect, the auxiliary rotor 12 will accelerate at the same percentage, and vice versa. If the main rotor 11 accelerates, the auxiliary rotor 12 will decelerate.

[0060] A valve 26 is installed at the fluid outlet. A PCB permanent magnet motor and a drive gear set 28 are mounted on the outer wall of the impeller box. A screw nut 29 is mounted on the drive gear set 28, which is connected to a pressure relief lever 30. The pressure relief lever 30 is connected to the valve 26. The PCB permanent magnet motor drives the gear set 28 and the screw nut 29, which in turn drives the pressure relief lever 30 to move the valve 26 up and down, opening and closing the valve 26. This design allows for linear flow regulation based on the flow rate and valve 26, with low power consumption during switching. It is suitable for various flow meter users' needs.

[0061] More specifically: when valve 26 is closed, to open valve 26, the PCB permanent magnet motor drives the gear set 28 and the screw nut 29 to move the pressure relief lever 30 downward, first opening the pressure relief hole on the valve plate to release pressure, and then the lever continues to move downward until the valve plate is fully open.

[0062] When valve 26 is open, to close valve 26, the PCB permanent magnet motor drives the gear set 28 and the screw nut 29 to move the pressure relief lever 30 upward, first closing the pressure relief hole on the valve plate to prevent pressure relief, and then the lever continues to move upward until the valve plate is completely closed.

[0063] In this embodiment, the drive of the PCB permanent magnet motor is also controlled by the control unit.

[0064] It should be noted that the rotor blades 13 are made of polypropylene with hollow microspheres, making the overall density of the rotor blades 13 the same as that of water, facilitating suspension on water. The magnet 24 is a component made of neodymium iron boron phosphor steel or ferrite. The fluids referred to in the embodiments include liquids and gases.

[0065] In this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0066] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0067] The above description is merely an example and illustration of the structure of this utility model. Those skilled in the art can make various modifications or additions to the specific embodiments described or use similar methods to replace them, as long as they do not deviate from the structure of the utility model or exceed the scope defined in the claims, they should all fall within the protection scope of this utility model.

Claims

1. A vertical turbine flow meter device, characterized in that, include: A housing, the interior of which is formed with a receiving cavity; The main rotor is rotatably disposed within the receiving cavity; The secondary rotor is rotatably disposed within the receiving cavity; The main rotor and the auxiliary rotor are stacked one on top of the other, and both the main rotor and the auxiliary rotor are provided with inclined blades; It also includes a control unit, a drive mechanism, and a speed acquisition unit. The control unit is electrically connected to the drive mechanism and the speed acquisition unit, respectively. The drive mechanism is mounted on the housing and is used to drive the main rotor to rotate. The speed acquisition unit is used to acquire the speeds of the main rotor and the auxiliary rotor.

2. The vertical turbine flow meter device according to claim 1, characterized in that, The shell has pipe sections on both sides, which serve as fluid inlets and fluid outlets to connect to the internal receiving cavity. The fluid inlet is connected to the main rotor and the fluid outlet is connected to the auxiliary rotor. Fluid flows in through the fluid inlet and flows out through the fluid outlet after passing through the receiving cavity.

3. The vertical turbine flow meter device according to claim 1, characterized in that, The housing also includes an impeller box that encloses the main rotor and the auxiliary rotor. The impeller box has guide grooves to control the fluid to enter and exit at an inclined angle.

4. The vertical turbine flow meter device according to claim 3, characterized in that, The impeller box is a cavity formed by an upper impeller box and a lower impeller box, and the enclosed end is sealed by a sealing ring. Both the upper and lower impeller boxes are provided with guide grooves, and the guide grooves on the upper and lower impeller boxes have opposite guide directions.

5. The vertical turbine flow meter device according to claim 4, characterized in that, A hollow bearing sleeve is sandwiched between the upper and lower impeller boxes. An auxiliary rotor shaft is located above the bearing sleeve, and the auxiliary rotor is mounted above the bearing sleeve via the auxiliary rotor shaft. A main rotor shaft is located below the bearing sleeve, and the main rotor is mounted above the bearing sleeve via the auxiliary rotor shaft.

6. The vertical turbine flow meter device according to claim 5, characterized in that, The main rotor shaft and the auxiliary rotor shaft are coaxially arranged vertically and are independent of each other.

7. The vertical turbine flow meter device according to claim 6, characterized in that, The fluid inlet is connected to the guide groove of the lower impeller box, and the fluid flows into the main rotor through the fluid inlet and the guide groove of the lower impeller box; the fluid outlet is connected to the guide groove of the upper impeller box, and the fluid flows into the secondary rotor through the main rotor, the secondary rotor, the fluid inlet, the guide groove of the upper impeller box, and the fluid outlet.

8. The vertical turbine flow meter device according to claim 7, characterized in that, A valve is installed at the fluid outlet. A PCB permanent magnet motor and a drive gear set are installed on the outer wall of the impeller box. A screw nut is installed on the drive gear set. The screw nut is connected to a pressure relief lever. The pressure relief lever is connected to the valve. The PCB permanent magnet motor drives the gear set and the screw nut to drive the pressure relief lever to move the valve up and down, opening and closing the valve.

9. The vertical turbine flow meter device according to claim 1, characterized in that, The drive mechanism includes at least one set of lower electromagnetic coils, which are arranged around the lower part of the housing. At least one magnet is provided on the main rotor. Below the dividing flow rate, the main rotor is driven by the lower electromagnetic coils below the housing to rotate the magnet on the main rotor.

10. The vertical turbine flow meter device according to claim 9, characterized in that, The flow meter device also includes a power generation and energy storage device. An upper electromagnetic coil is provided above the housing, and at least one magnet is provided on the secondary rotor. When the flow rate is above the boundary, the upper electromagnetic coil generates electricity by the magnet on the secondary rotor cutting the magnetic lines of force, which is then used to store energy in the energy storage device.

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