An automatically calibrated smart sensor metal tube float flowmeter

Abstract

The application discloses an automatic calibration intelligent sensor metal tube float flowmeter, and relates to the technical field of metal tube float flowmeters.The automatic calibration intelligent sensor metal tube float flowmeter comprises an equivalent mass adjusting assembly, the equivalent mass adjusting assembly comprises a float body in a circular truncated cone structure, and a hollow sealed cavity is axially arranged in the float body.The movement of the counterweight in the application does not increase or decrease the actual mass of the float body, but adjusts the barycentric position, changes the matching mode of the force acting on the float body and the fluid, and changes the medium pressure into the position change of the counterweight through the corrugated diaphragm.The position change of the counterweight accurately matches the stress characteristics of the float body in the straight wall pipeline in the circular truncated cone structure, finally realizes the self-adaptive adjustment of the equivalent mass, and makes the equivalent mass of the float body dynamically adapt to the buoyancy regardless of the fluctuation of the medium pressure, thereby avoiding the top dead center or the bottom dead center.

Description

Technical Field

[0001] This invention relates to the field of metal tube float flowmeter technology, specifically to an automatically calibrated intelligent sensor metal tube float flowmeter. Background Technology

[0002] A float flow meter is an instrument specifically designed to measure the flow rate of liquids or gases in pipelines. The sensor section consists of an input pipe, an output pipe, a riser, a measuring tube, a conical float, a lower limit ring, an upper limit ring, and an orifice plate. The input and output pipes are installed on the left and right sides of the lower end of the riser. The upper end of the measuring tube is fixedly connected to the upper end of the riser via a flange, and the lower end of the measuring tube communicates with the input pipe. An outlet orifice is located at the upper end of the measuring tube. The lower and upper limit rings are fixedly installed at the upper and lower ends of the measuring tube, respectively. The guide rods at the upper and lower ends of the conical float slide and engage with the lower and upper limit rings, respectively. The orifice plate is fixedly installed inside the measuring tube and corresponds to the conical float. Its working principle is that the medium enters the measuring tube from the input tube and flows upward. The conical float is subjected to upward lifting force, buoyancy, and downward gravity. When these three forces are balanced, the conical float stays at a certain position. The conical float and the orifice plate form an annular flow surface. This annular flow surface has a certain relationship with the flow rate. The larger the area of ​​the annular flow surface, the larger the flow rate. The magnet in the conical float is coupled with the magnet on the rotating shaft in the converter. The converter converts the flow rate into a value, which is indicated by the pointer scale or output as a 4-20mA current signal.

[0003] Existing vertical float flow meters require pre-matching of the medium conditions and the flow meter's measurement threshold during installation. However, their float mass is fixed, making it unable to adapt to fluctuations or adjustments in the medium pressure within the pipeline during actual use. This leads to a tendency for measurement failure: On the one hand, when the flow rate suddenly increases, the medium velocity accelerates, and the fluid lift plus static pressure buoyancy on the float increases sharply. Since the float mass is fixed, it cannot increase the equivalent gravity in time, causing the float to quickly rise to the top of the flow channel and become stuck, losing its measurement capability. On the other hand, when the flow rate suddenly drops, the buoyancy weakens rapidly. The fixed-mass float, due to gravity exceeding buoyancy, quickly sinks to the bottom of the flow channel and cannot rise with small changes in flow rate, causing the lower limit of measurement to fail. Regardless of which of these situations occurs, the installed float flow meter will undoubtedly lose its measurement function. Summary of the Invention

[0004] The purpose of this invention is to provide an automatically calibrated intelligent sensor metal tube float flowmeter to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: an automatic calibration intelligent sensor metal tube float flowmeter, comprising an equivalent mass adjustment component, wherein the equivalent mass adjustment component comprises a float body with a frustum-shaped structure, wherein a hollow sealed cavity is axially opened inside the float body, and brackets are axially parallel to each other on the inner walls of both sides of the hollow sealed cavity. The brackets on both sides are L-shaped structures with opposite concave openings, and guide grooves are symmetrically opened on the inner walls of the concave openings of the brackets on both sides. A counterweight is built into the hollow sealed cavity, and the counterweight is a cylindrical slider. The diameter of the counterweight is larger than the bottom distance between the brackets on both sides. Buffer pads are installed at the upper and lower ends of the counterweight, and guide pins are radially fixed at both ends of the outer circle of the counterweight. The guide pins are limited and engaged with the guide grooves on the inner walls of the adjacent side brackets.

[0006] Furthermore, the top opening of the hollow sealing cavity is provided with a sealing groove, and a guide rod is connected to the outside of the top opening of the hollow sealing cavity. The guide rod coincides with the axis of the float body. An end is fixedly installed on one end of the guide rod near the float body, and the end is fixed to the end plane of the float body by bolts. A sealing ring is installed on the inner side of the end, and the sealing ring is sealed and matched with the sealing groove provided at the top of the opening of the hollow sealing cavity.

[0007] Furthermore, a pressure sensing component is installed at the bottom of the hollow sealing cavity. The pressure sensing component includes a corrugated diaphragm bolted to the bottom opening of the hollow sealing cavity. A connecting rod is fixedly connected to the middle of the inner side of the corrugated diaphragm. Under the action of medium pressure, the corrugated diaphragm deforms towards the hollow sealing cavity and generates axial thrust through the connecting rod. The corrugated diaphragm and its end cap seal the openings at both ends of the hollow sealing cavity to prevent medium from seeping in.

[0008] Furthermore, the pressure sensing component also includes a guide frame that slides axially with the connecting rod. The center of the guide frame and the sliding engagement point with the connecting rod form a ring structure, and the spokes around the guide frame are fixed to the inner wall of the hollow sealed cavity.

[0009] Furthermore, the pressure sensing component also includes a shaft bracket fixedly installed on both sides of the top end of the connecting rod. A gear is rotatably installed inside the shaft bracket, and a fixed rack is meshed on one side of the gear. The fixed rack is fixed to the bottom end of the bracket on the corresponding side.

[0010] Furthermore, the pressure sensing component also includes a movable rack meshing with the gear on the other side, the movable rack being slidably mounted on the inner side of the guide rail, and the guide rail being fixed to the bottom end of the bracket on the corresponding other side.

[0011] Furthermore, the pressure sensing component also includes an extension plate fixedly installed on the top side of the movable rack. A top rod is fixedly connected to the top of the extension plate, and the end of the top rod facing away from the extension plate is fixed to the counterweight. The axes of the top rod, the counterweight, and the connecting rod are coincident.

[0012] Furthermore, the float body moves axially up and down inside the tube, and flanges are integrally fixed at both ends of the tube, and the tube is bolted to the adjacent pipe through the flanges at both ends.

[0013] Furthermore, a stop frame is fixedly installed on the inner wall of the top end of the tube, and the stop frame is in a limiting sliding fit with the guide rod. A perforated plate is fixedly installed on the inner wall of the bottom end of the tube, and the axial through hole of the perforated plate matches the frustum shape of the float body.

[0014] Furthermore, an installation plate is integrally fixed to the outer wall of the tube, and a display is bolted to the outside of the installation plate. A sensing magnet is connected to the inside of the display, and the sensing magnet is coupled to the magnet in the float body through a through hole in the side wall of the tube.

[0015] This invention provides an automatically calibrated intelligent sensor metal tube float flowmeter, which has the following beneficial effects; 1. In this application, the movement of the counterweight does not increase or decrease the actual mass of the float body. Instead, it changes the matching method between the float body and the fluid force by adjusting the position of the center of gravity. The change in medium pressure is directly converted into a change in the position of the counterweight through the corrugated diaphragm. The change in the position of the counterweight precisely matches the force characteristics of the frustum-shaped float body in the straight-walled pipe, and finally achieves adaptive adjustment of the equivalent mass. This ensures that no matter how the medium pressure fluctuates, the equivalent mass of the float body can dynamically adapt to the buoyancy and remain stable within the measurement range, thereby avoiding jamming or sinking.

[0016] 2. In use, when the corrugated diaphragm bends upward under the pressure of the medium, the diaphragm drives the gear to rotate around the fixed shaft through the connecting rod. The gear meshes with the fixed rack on the left, driving the movable rack on the right to move upward to amplify the stroke, ultimately pushing the counterweight upward. When the diaphragm rebounds, the gear rotates in the opposite direction, and the movable rack drives the counterweight downward. This perfectly matches the linkage logic between pressure and counterweight. By adjusting the appropriate gear ratio, the small bending deformation of the corrugated diaphragm can be converted into a large linear stroke of the movable rack. A single-stage transmission can achieve several times the stroke amplification. Similarly, if a multi-stage transmission is designed, i.e., the movable rack of the previous stage is linked with the gear of the next stage, the amplification effect can be superimposed, which can fully meet the required movement distance of the counterweight, allowing the counterweight to move a distance sufficient to significantly change the equivalent mass.

[0017] 3. In use, this application changes the equivalent mass of the float body by axial sliding of the counterweight driven by pressure, thereby achieving real-time matching with the medium pressure and ultimately maintaining buoyancy balance and measurement effectiveness. The magnet material built into the float body is coupled with the sensing magnet of the flow meter display, providing real-time feedback on the position of the float body and thus inferring the flow rate of the medium in the pipe. This allows the metal tube float flow meter of this application to intelligently adapt to different pressure conditions, greatly expanding its application range. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall assembly structure of the device of the present invention; Figure 2 This is a schematic diagram of the internal structure of the device of the present invention; Figure 3 This is a schematic diagram of the internal structure of the tube body of the present invention; Figure 4 This is a schematic cross-sectional view of the float body of the present invention; Figure 5 This is a schematic diagram of the equivalent mass adjustment component structure of the present invention; Figure 6 This is a schematic diagram of the exploded structure of the float body of the present invention; Figure 7 This is a schematic diagram of the pressure sensing component structure of the present invention.

[0019] In the diagram: 1. Equivalent mass adjustment component; 101. Float body; 102. Hollow sealing cavity; 103. Bracket; 104. Guide groove; 105. Counterweight; 106. Buffer pad; 107. Guide pin; 2. Sealing groove; 3. Guide rod; 4. End; 5. Sealing ring; 6. Pressure sensing component; 601. Corrugated diaphragm; 602. Connecting rod; 603. Guide frame; 604. Shaft frame; 605. Gear; 606. Fixed rack; 607. Movable rack; 608. Guide rail; 609. Extension plate; 610. Top rod; 7. Tube body; 8. Flange; 9. Stop frame; 10. Orifice plate; 11. Mounting plate; 12. Display; 13. Sensing magnet. Detailed Implementation

[0020] The embodiments of the present invention will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and should not be construed as limiting the scope of the invention. Please see Figures 4 to 6This invention provides a technical solution: an automatically calibrated intelligent sensor metal tube float flowmeter, including an equivalent mass adjustment component 1. The equivalent mass adjustment component 1 includes a frustum-shaped float body 101. A hollow sealed cavity 102 is axially formed inside the float body 101, and brackets 103 are axially and parallelly fixed to the inner walls of both sides of the hollow sealed cavity 102. The two brackets 103 have an "L"-shaped structure with opposing concave openings, and guide grooves 104 are symmetrically formed on the inner walls of the concave openings of the two brackets 103. A counterweight 105 is built into the hollow sealed cavity 102, and the counterweight 105 is a cylindrical slider with a diameter larger than the bottom distance between the two brackets 103. The counterweight 105 is equipped with buffer pads 106 at both ends, and guide pins 107 are radially fixed at both ends of the outer circle of the counterweight 105. The guide pins 107 are limited to the guide grooves 104 on the inner wall of the adjacent side bracket 103. The top opening of the hollow sealing cavity 102 is provided with a sealing groove 2, and a guide rod 3 is connected to the top opening of the hollow sealing cavity 102. The guide rod 3 is coincident with the axis of the float body 101. An end head 4 is fixedly installed at one end of the guide rod 3 near the float body 101. The end head 4 is fixed to the end plane of the float body 101 by bolts. A sealing ring 5 is installed on the inner side of the end head 4, and the sealing ring 5 is sealed to the sealing groove 2 provided at the top opening of the hollow sealing cavity 102. The specific operation is as follows: When the medium is introduced into the pipeline, the medium pressure first acts on the corrugated diaphragm 601 at the bottom of the float body 101. On the one hand, under high pressure conditions, the high medium pressure results in strong buoyancy. The diaphragm pushes the counterweight 105 upward within the hollow sealing cavity 102, causing the counterweight 105 to move closer to the top of the hollow sealing cavity 102, thus shifting the center of gravity of the float body 101 upward. This reduces the lever arm difference between the float body 101 and the fluid force. At this time, the float body 101 needs to exhibit a larger effective force-bearing mass to resist the greater fluid thrust. This is reflected in the equivalent mass as a numerical increase, which just balances the strong buoyancy under high pressure, thereby preventing the float body 101 from being overloaded. 01. Excessive upward buoyancy can cause the float to become stuck. On the other hand, under low-pressure conditions, the low medium pressure results in weak buoyancy. The diaphragm rebound causes the counterweight 105 to move downward within the hollow sealed cavity 102, bringing it closer to the bottom of the cavity and lowering the center of gravity of the float body 101. This increases the lever arm difference between the float body and the fluid force. At this point, the buoyancy of the fluid is weak under low pressure, requiring a reduction in the effective mass of the float body 101 to be lifted. In other words, after the center of gravity shifts downward, the leverage effect of the fluid force is enhanced. Under the same actual weight, the equivalent mass exhibited by the float body 101 decreases, which is just right to match the weak buoyancy under low pressure, thus preventing the float body 101 from becoming stuck. In this application, the movement of the counterweight 105 does not increase or decrease the actual mass of the float body 101. Instead, it adjusts the center of gravity, changing the force matching between the float body 101 and the fluid. Changes in medium pressure are directly converted into changes in the position of the counterweight 105 through the corrugated diaphragm 601. These changes in position precisely match the force characteristics of the frustum-shaped float body 101 in a straight-walled pipe, ultimately achieving adaptive adjustment of the equivalent mass. This ensures that regardless of fluctuations in medium pressure, the equivalent mass of the float body 101 dynamically adapts to buoyancy, remaining stable within the measurement range, thus preventing jamming or... The float body 101 retains the traditional conical shape, but the interior is hollowed out to form a cylindrical hollow sealed cavity 102. The inner walls of the hollow sealed cavity 102 are axially parallel to the brackets 103. When the counterweight 105 moves axially within the hollow sealed cavity 102 to adjust the equivalent mass, its radially fixed guide pin 107 slides in the guide groove 104 inside the bracket 103, thereby restricting the counterweight 105 to move only along the axis of the float body 101, avoiding rotation or displacement that would cause the center of gravity to tilt. Furthermore, PTFE buffer pads 106 are installed at both ends of the counterweight 105 to prevent vibration noise caused by impact when the counterweight 105 is under pressure fluctuation. Please see Figures 6 to 7A pressure sensing component 6 is installed at the bottom of the hollow sealed cavity 102. The pressure sensing component 6 includes a corrugated diaphragm 601 bolted to the bottom opening of the hollow sealed cavity 102. A connecting rod 602 is fixedly connected to the middle of the inner side of the corrugated diaphragm 601. Under the action of medium pressure, the corrugated diaphragm 601 deforms towards the hollow sealed cavity 102 and generates axial thrust through the connecting rod 602. The corrugated diaphragm 601 and the end 4 seal the openings at both ends of the hollow sealed cavity 102 to prevent medium leakage. The pressure sensing component 6 also includes a guide frame 603 that slides axially with the connecting rod 602. The center of the guide frame 603 and the sliding engagement point with the connecting rod 602 form a ring structure, and the spokes around the guide frame 603 are fixed to the inner wall of the hollow sealed cavity 102. The pressure sensing component 6 also includes components fixedly installed on the connecting rod. The pressure sensing component 6 includes a shaft bracket 604 on both sides of the top of the 602. A gear 605 is rotatably mounted inside the shaft bracket 604. A fixed rack 606 is meshed with one side of the gear 605. The fixed rack 606 is fixed to the bottom end of the bracket 103 on the corresponding side. The pressure sensing component 6 also includes a movable rack 607 meshed with the other side of the gear 605. The movable rack 607 is slidably mounted inside the guide rail 608. The guide rail 608 is fixed to the bottom end of the bracket 103 on the corresponding side. The pressure sensing component 6 also includes an extension plate 609 fixedly mounted on the top side of the movable rack 607. A top rod 610 is fixedly connected to the top of the extension plate 609. The end of the top rod 610 away from the extension plate 609 is fixed to the counterweight 105. The axes of the top rod 610, the counterweight 105, and the connecting rod 602 are coincident. The specific operation is as follows: To amplify the relatively small deformation of the corrugated diaphragm 601 to match the lifting stroke of the counterweight 105, this application arranges a micro gear 605 rack mechanism on the inner side of the diaphragm body facing the hollow sealing cavity 102. The gear 605 is rotatably mounted on the connecting rod 602 fixed in the middle of the inner side of the corrugated diaphragm 601 via the shaft bracket 604. The left fixed rack 606 is rigidly connected to the bracket 103 on the corresponding side, and the right movable rack 607 is connected to the counterweight 105 via the push rod 610. The overall structure is compact and does not occupy too much space. When the corrugated diaphragm 601 bends upward under the action of medium pressure, the corrugated diaphragm 601 pushes the gear 605 to rotate around the fixed shaft via the connecting rod 602. The gear 605 and the left The fixed rack 606 engages, driving the movable rack 607 on the right to move upward, thus amplifying the stroke and ultimately pushing the counterweight 105 upward. When the diaphragm rebounds, the gear 605 rotates in the opposite direction, and the movable rack 607 drives the counterweight 105 downward. This perfectly matches the linkage logic between pressure and counterweight. By adjusting the appropriate gear ratio of the gear 605, the slight bending deformation of the corrugated diaphragm 601 can be converted into a large linear stroke of the movable rack 607. A single-stage transmission can achieve several times the stroke amplification. Similarly, if a multi-stage transmission is designed, i.e., the movable rack 607 of the previous stage is linked with the gear 605 of the next stage, the amplification effect can be superimposed, which can fully meet the required movement distance of the counterweight 105, allowing the counterweight to move a distance sufficient to significantly change the equivalent mass. Please see Figures 1 to 4 The float body 101 is axially raised and lowered inside the tube body 7, and the upper and lower ends of the tube body 7 are integrally fixed with flanges 8. The tube body 7 is bolted to the adjacent pipe through the flanges 8 at both ends. A stop frame 9 is fixedly installed on the inner wall of the top end of the tube body 7, and the stop frame 9 is limited and slidably engaged with the guide rod 3. A perforated plate 10 is fixedly installed on the inner wall of the bottom end of the tube body 7, and the perforated plate 10 is axially connected to the truncated cone shape of the float body 101. An installation plate 11 is integrally fixedly installed on the outer wall of the tube body 7, and a display 12 is bolted to the outside of the installation plate 11. A sensing magnet 13 is connected to the inner side of the display 12, and the sensing magnet 13 is coupled to the magnet in the float body 101 through the through hole in the side wall of the tube body 7. The specific operation is as follows: the top opening of the hollow sealing cavity 102 is bolted to the guide rod 3 through the cooperation of the sealing ring 5 and the sealing groove 2. A micro-corrugated diaphragm 601 is installed in the pressure transmission hole at the bottom opening of the hollow sealing cavity 102 to ensure that the medium does not seep into the inner cavity, while ensuring the overall sealing and waterproof and corrosion-resistant capabilities of the float. During use, the axial sliding of the counterweight driven by pressure changes the equivalent mass of the float body 101, achieving real-time matching with the medium pressure, and ultimately maintaining buoyancy balance and measurement effectiveness. The magnet material built into the float body 101 is coupled with the sensing magnet 13 of the flow meter display 12, providing real-time feedback on the position of the float body 101 and thus inferring the flow rate of the medium in the tube 7. This allows the metal tube float flow meter of this application to intelligently adapt to different pressure conditions, greatly expanding its application range.

[0021] In summary, when using this automatically calibrated smart sensor metal tube float flowmeter: First, when a medium is introduced into the pipeline, the medium pressure acts on the corrugated diaphragm 601 at the bottom of the float body 101. On the one hand, under high-pressure conditions, the high medium pressure results in strong buoyancy. The diaphragm pushes the counterweight 105 upward within the hollow sealing cavity 102, causing the counterweight 105 to move closer to the top of the hollow sealing cavity 102, thus shifting the center of gravity of the float body 101 upward. This reduces the lever arm difference between the float body 101 and the fluid force. At this time, the float body 101 needs to exhibit a larger effective force-bearing mass to resist the greater fluid thrust, which is reflected in an increase in the equivalent mass value. This balances the strong buoyancy under high pressure, thus preventing the float body 101 from excessively rising and becoming stuck. On the other hand, under low-pressure conditions, the low medium pressure results in weak buoyancy. The diaphragm rebounds, causing the counterweight 105 to move downward within the hollow sealing cavity 102, causing the counterweight 105 to move closer to the bottom of the hollow sealing cavity 102, thus shifting the center of gravity of the float body 101 downward. This increases the lever arm difference between the float body 101 and the fluid force. Under low pressure, the buoyancy of the fluid is weak, and the effective force-bearing mass of the float body 101 needs to be reduced in order to be lifted. That is, after the center of gravity is lowered, the leverage effect of the fluid force is enhanced. Under the same actual weight, the equivalent mass of the float body 101 is reduced, which is just right to match the weak buoyancy under low pressure, thereby avoiding the float body 101 from sinking to the bottom excessively. In this application, the movement of the counterweight 105 does not increase or decrease the actual mass of the float body 101, but changes the matching method between the float body 101 and the fluid force by adjusting the position of the center of gravity. The change of medium pressure is directly converted into the position change of the counterweight 105 through the corrugated diaphragm 601. The position change of the counterweight 105 precisely matches the force characteristics of the frustum-shaped float body 101 in the straight-walled pipe, and finally achieves the adaptive adjustment of the equivalent mass. This allows the equivalent mass of the float body 101 to dynamically adapt to the buoyancy regardless of the fluctuation of the medium pressure, and always remain stable within the measurement range, thereby avoiding being stuck or sinking to the bottom. Secondly, to amplify the relatively small deformation of the corrugated diaphragm 601 to match the lifting stroke of the counterweight 105, this application arranges a micro gear 605 rack mechanism on the inner side of the diaphragm body facing the hollow sealing cavity 102. The gear 605 is rotatably mounted on the connecting rod 602 fixed in the middle of the inner side of the corrugated diaphragm 601 via the shaft bracket 604. The left fixed rack 606 is rigidly connected to the bracket 103 on the corresponding side, and the right movable rack 607 is connected to the counterweight 105 via the push rod 610. The overall structure is compact and does not occupy too much space. When the corrugated diaphragm 601 bends upward under the action of medium pressure, the corrugated diaphragm 601 pushes the gear 605 to rotate around the fixed shaft via the connecting rod 602. The gear 605 and the left fixed rack 602 are connected to the counterweight 105. The fixed rack 606 engages, driving the right movable rack 607 to move upward to amplify the stroke, ultimately pushing the counterweight 105 upward. When the diaphragm rebounds, the gear 605 rotates in the opposite direction, and the movable rack 607 drives the counterweight 105 downward. This perfectly matches the linkage logic between pressure and counterweight. By adjusting the appropriate gear ratio of the gear 605, the slight bending deformation of the corrugated diaphragm 601 can be converted into a large linear stroke of the movable rack 607. A single-stage transmission can achieve several times the stroke amplification. Similarly, if a multi-stage transmission is designed, i.e., the previous movable rack 607 and the next gear 605 are linked, the amplification effect can be superimposed, which can fully meet the required movement distance of the counterweight 105, allowing the counterweight to move a distance sufficient to significantly change the equivalent mass. Finally, this application retains the traditional conical shape of the float body 101, but hollows out the interior to form a cylindrical hollow sealed cavity 102. Supports 103 are axially and parallelly fixed to the inner walls of both sides of the hollow sealed cavity 102. When the counterweight 105 moves axially within the hollow sealed cavity 102 to adjust its equivalent mass, its radially fixed guide pin 107 slides in the guide groove 104 inside the support 103, thus restricting the counterweight 105 to move only along the axis of the float body 101, preventing rotation or offset that could cause the center of gravity to tilt. Furthermore, PTFE buffer pads 106 are installed at both ends of the counterweight 105 to prevent vibration noise caused by impact during pressure fluctuations. The top opening of the hollow sealed cavity 102 is sealed with a sealing ring 5. The groove 2 is fitted to achieve bolt connection with the guide rod 3. A micro-corrugated diaphragm 601 is installed in the pressure transmission hole at the bottom opening of the hollow sealing cavity 102 to ensure that the medium does not seep into the inner cavity, while ensuring the overall sealing and waterproof and corrosion-resistant capabilities of the float. During use, the axial sliding of the counterweight driven by pressure changes the equivalent mass of the float body 101, achieving real-time matching with the medium pressure, and ultimately maintaining buoyancy balance and measurement effectiveness. The magnet material built into the float body 101 is coupled with the sensing magnet 13 of the flow meter display 12, providing real-time feedback on the position of the float body 101 and thus inferring the flow rate of the medium in the tube 7. This allows the metal tube float flow meter of this application to intelligently adapt to different pressure conditions, greatly expanding its application range.

[0022] It should be noted that, 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 process, method, article, or apparatus.

[0023] This article uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only for the purpose of helping to understand the method and core ideas of the present invention. The above are only preferred embodiments of the present invention. It should be noted that due to the limitations of textual expression, and the existence of an infinite number of specific structures, those skilled in the art can make several improvements, modifications, or changes without departing from the principles of the present invention, and can also combine the above technical features in an appropriate manner. These improvements, modifications, changes, or combinations, or the direct application of the inventive concept and technical solution to other situations without modification, should all be considered within the scope of protection of the present invention.

Claims

1. An automatically calibrated intelligent sensor metal tube float flowmeter, comprising an equivalent mass adjustment assembly (1), characterized in that, The equivalent mass adjustment component (1) includes a frustum-shaped float body (101). A hollow sealed cavity (102) is axially formed inside the float body (101). Supports (103) are axially parallel to each other on the inner walls of both sides of the hollow sealed cavity (102). The supports (103) on both sides have an "L"-shaped structure with opposing notches. Guide grooves (104) are symmetrically formed on the inner walls of the notches of the supports (103) on both sides. A counterweight (105) is built into the hollow sealed cavity (102). The counterweight (105) is a cylindrical slider, and its diameter is larger than the bottom distance between the supports (103) on both sides. Buffer pads (106) are installed at both the upper and lower ends of the counterweight (105). Guide pins (107) are radially fixed at both ends of the outer circle, and the guide pins (107) are limited to the guide grooves (104) on the inner wall of the adjacent side brackets (103). A pressure sensing component (6) is installed at the bottom of the hollow sealing cavity (102). The pressure sensing component (6) includes a corrugated diaphragm (601) bolted to the bottom opening of the hollow sealing cavity (102). A connecting rod (602) is fixedly connected to the middle of the inner side of the corrugated diaphragm (601). Under the action of medium pressure, the corrugated diaphragm (601) deforms towards the hollow sealing cavity (102) and generates axial thrust through the connecting rod (602). The corrugated diaphragm (601) and the end (4) seal the openings at both ends of the hollow sealing cavity (102) to prevent medium from seeping in.

2. The automatically calibrated intelligent sensor metal tube float flowmeter according to claim 1, characterized in that, The top opening of the hollow sealing cavity (102) is provided with a sealing groove (2), and a guide rod (3) is connected to the top opening of the hollow sealing cavity (102). The guide rod (3) coincides with the axis of the float body (101). An end (4) is fixedly installed on one end of the guide rod (3) near the float body (101), and the end (4) is fixed to the end plane of the float body (101) by bolts. A sealing ring (5) is installed on the inner side of the end (4), and the sealing ring (5) is sealed and fitted with the sealing groove (2) provided at the top opening of the hollow sealing cavity (102).

3. The automatically calibrated intelligent sensor metal tube float flowmeter according to claim 2, characterized in that, The pressure sensing component (6) also includes a guide frame (603) that slides axially with the connecting rod (602). The center of the guide frame (603) and the sliding engagement point with the connecting rod (602) form an annular structure, and the spokes around the guide frame (603) are fixed to the inner wall of the hollow sealed cavity (102).

4. The automatically calibrated intelligent sensor metal tube float flowmeter according to claim 3, characterized in that, The pressure sensing component (6) also includes a shaft bracket (604) fixedly installed on both sides of the top end of the connecting rod (602). A gear (605) is rotatably installed inside the shaft bracket (604), and a fixed rack (606) is meshed on one side of the gear (605). The fixed rack (606) is fixed to the bottom end of the bracket (103) on the corresponding side.

5. The automatically calibrated intelligent sensor metal tube float flowmeter according to claim 4, characterized in that, The pressure sensing component (6) also includes a movable rack (607) meshing with the gear (605) on the other side. The movable rack (607) is slidably mounted on the inner side of the guide rail (608), and the guide rail (608) is fixed to the bottom end of the bracket (103) on the corresponding other side.

6. The automatically calibrated intelligent sensor metal tube float flowmeter according to claim 5, characterized in that, The pressure sensing component (6) also includes an extension plate (609) fixedly installed on the top side of the movable rack (607). A top rod (610) is fixedly connected to the top of the extension plate (609), and the end of the top rod (610) away from the extension plate (609) is fixed to the counterweight (105). The axes of the top rod (610), the counterweight (105) and the connecting rod (602) are coincident.

7. The automatically calibrated intelligent sensor metal tube float flowmeter according to claim 6, characterized in that, The float body (101) is axially raised and lowered inside the tube body (7), and the upper and lower ends of the tube body (7) are integrally fixed with flanges (8), and the tube body (7) is bolted to the adjacent pipe through the flanges (8) at both ends.

8. The automatically calibrated intelligent sensor metal tube float flowmeter according to claim 7, characterized in that, A stop frame (9) is fixedly installed on the inner wall of the top end of the tube (7), and the stop frame (9) is in a limiting sliding fit with the guide rod (3). A perforated plate (10) is fixedly installed on the inner wall of the bottom end of the tube (7), and the axial through hole of the perforated plate (10) matches the truncated shape of the float body (101).

9. The automatically calibrated intelligent sensor metal tube float flowmeter according to claim 8, characterized in that, The outer wall of the tube (7) is integrally fixed with an installation plate (11), and the display (12) is fixed to the outside of the installation plate (11) with bolts. The inner side of the display (12) is connected with a sensing magnet (13), and the sensing magnet (13) is coupled to the magnet in the float body (101) through the through hole in the side wall of the tube (7).

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