An electromagnetic flowmeter calibration device and method

Abstract

This invention relates to the field of flow detection equipment technology, and in particular to an electromagnetic flowmeter calibration device and method, comprising a flow divider box, with flow divider pipes provided at both the front and rear ends of one side wall of the flow divider box; a return pipe located on one side of the flow divider box, with two sets of branch pipes connected through one end of the return pipe; a placement frame installed at both the front and rear sides between the flow divider box and the return pipe; a rotating frame installed on the upper part of the placement frame; brackets fixed at the four ends of the rotating frame, and the brackets having different sizes; and an installation assembly, including docking plates fixedly installed at one end of the branch pipe, one end of the flow divider pipe, and both sides of the brackets, with pressure cylinders evenly spaced along the circumference of one side wall of the docking plate; and U-shaped plates fixed at both the front and rear ends of the outer wall of the docking plate. This electromagnetic flowmeter calibration device can realize the rapid assembly and disassembly of the electromagnetic flowmeter under test, has a wide range of applications, and can realize continuous measurement and calibration of multiple electromagnetic flowmeters under test.

Description

Technical Field

[0001] This invention relates to the field of flow detection equipment technology, and in particular to an electromagnetic flowmeter calibration device and method. Background Technology

[0002] Electromagnetic flow meters are a new type of flow measurement instrument that has developed rapidly with the development of electronic technology. Electromagnetic flow meters are instruments that use the principle of electromagnetic induction to measure the flow rate of conductive fluid based on the electromotive force induced when conductive fluid passes through an external magnetic field. They are mainly composed of a magnetic circuit system, measuring conduit, electrodes, housing, lining, and converter. To ensure the accuracy of fluid measurement values, electromagnetic flowmeters are typically calibrated using either actual flow calibration or dry calibration methods after prolonged use and post-production. Actual flow calibration requires a dedicated calibration device for measurement and calibration, offering high accuracy. For example, existing public document CN220670668U – A Calibration Device for Electromagnetic Flowmeter – discloses such a device. While existing electromagnetic flowmeter calibration devices can achieve circuit board splitting, they still have certain shortcomings in practical use: First, existing devices use bolts to install the electromagnetic flowmeter to be tested, suspended by a crane, onto the measuring pipe. This method requires repeated installation of multiple bolts, greatly increasing the complexity of the operation and affecting overall work efficiency. Second, existing devices can only calibrate and measure a single standard electromagnetic flowmeter on the same pipe, which affects the overall efficiency of the device and the calibration measurement efficiency, resulting in wasted testing resources. Finally, existing devices can only measure and calibrate electromagnetic flowmeters of a single fixed size, thus limiting their applicability. Therefore, it is necessary to improve the existing technology to solve the above-mentioned technical problems. Summary of the Invention

[0003] The purpose of this section is to outline some aspects of embodiments of the present invention and to briefly describe some preferred embodiments. Simplifications or omissions may be made in this section, as well as in the abstract and title of this application, to avoid obscuring the purpose of these documents; however, such simplifications or omissions should not be construed as limiting the scope of the invention.

[0004] In view of the problem that the existing electromagnetic flowmeter calibration device requires repeated installation of multiple bolts during the installation of the electromagnetic flowmeter, which greatly increases the cumbersomeness of the operation process and affects the overall work efficiency, an electromagnetic flowmeter calibration device is proposed.

[0005] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a slitting device for plate production, comprising a flow distribution box, wherein flow distribution pipes are provided at both the front and rear ends of one side wall of the flow distribution box; a return pipe, located on one side of the flow distribution box, wherein two sets of branch pipes are connected through one end of the return pipe; a placement frame is installed at both the front and rear sides between the flow distribution box and the return pipe; a rotating frame is provided above the interior of the placement frame; brackets are fixed at all four ends of the rotating frame, and the brackets are of different sizes; and an installation assembly, comprising a docking plate fixedly installed at one end of the branch pipe, one end of the flow distribution pipe, and both sides of the brackets; pressure cylinders are evenly spaced along the circumference of one side wall of the docking plate; U-shaped plates are fixed at both the front and rear ends of the outer wall of the docking plate; a U-shaped ring is provided on one side wall of the docking plate; and a rotating ring is rotatably installed on the outer wall of the U-shaped ring. A toothed ring is fixed at the center of the inner wall of the rotating ring. A screw is evenly spaced and rotated along the circumference of one side of the inner wall of the U-shaped ring. The other end of the screw passes through the through hole on the U-shaped ring and the pressure cylinder in sequence, and is screwed into the threaded hole on the rotating plate. A first toothed disc is fixed on one side of the outer wall of the screw, and a first fixing plate is fixed on the other side of the outer wall of the screw. A tension spring is sleeved in the middle of the outer wall of the screw. A connecting frame is fixed at the center of the outer wall of the rotating plate. A first rotating shaft is fixed through one side of the inner wall of the connecting frame. The two ends of the first rotating shaft are respectively rotatably installed in the bearings on the inner wall of the adjacent U-shaped plates. A torsion spring is sleeved on the outer wall of the first rotating shaft. The cross-section of the pressure cylinder is convex. The rack on the outer wall of the toothed ring meshes with the rack on the outer wall of the first toothed disc. The two ends of the tension spring are respectively fixed on one side wall of the first fixing plate and the inner wall of the pressure cylinder.

[0006] As a preferred embodiment of the electromagnetic flowmeter calibration device of the present invention, a standard electromagnetic flowmeter body is installed on the outer wall of the return pipe by bolts, the electromagnetic flowmeter body to be tested is installed inside the bracket, and an inlet pipe is provided at the center of the other side wall of the diversion box.

[0007] The beneficial effects of this invention are as follows: by installing the assembly, under the meshing action of the gear ring and multiple first gear discs, multiple screws rotate and are screwed together with the threaded holes on the rotating plate, so that multiple screws are screwed onto the rotating plate simultaneously, thereby quickly realizing the installation and disassembly of the electromagnetic flowmeter body to be measured, reducing the cumbersomeness of operation and increasing work efficiency.

[0008] Given that existing electromagnetic flowmeter calibration devices can only perform calibration measurements on a single electromagnetic flowmeter to be tested on the same pipeline, which affects the overall efficiency of the device and the calibration measurement efficiency, resulting in a waste of testing resources, a further improvement to a slitting device for plate production is proposed.

[0009] As a preferred embodiment of the electromagnetic flowmeter calibration device of the present invention, it further includes an opening and closing assembly disposed inside the flow divider box. The opening and closing assembly includes a first side plate fixed to the front end of the flow divider box surface and a first motor mounted on the front end of the first side plate. The output shaft of the first motor passes through the bearing on the first side plate and is connected to the first spline sleeve through a coupling. A second side plate is symmetrically disposed directly behind the first side plate.

[0010] In a preferred embodiment of the electromagnetic flowmeter calibration device of the present invention, a second spline sleeve is rotatably mounted at the center of the front end face of the second side plate, a first electromagnetic block is embedded in the inner wall of both the first and second spline sleeves, a worm is provided between the first and second spline sleeves, and a spline shaft is fixed at the center of the front and rear end faces of the worm.

[0011] As a preferred embodiment of the electromagnetic flowmeter calibration device of the present invention, a worm wheel is provided at both the front and rear ends of one side of the worm gear, a second rotating shaft is fixed at the center of the bottom of the worm wheel, the bottom end of the second rotating shaft passes through the bearing on the surface of the flow divider box and is connected to the second gear plate, a toothed plate is provided on one side of the second gear plate, and one side wall of the toothed plate is fixed at the center of one side wall of the sealing plate.

[0012] In a preferred embodiment of the electromagnetic flowmeter calibration device of the present invention, the sealing plate is slidably mounted on the outer wall of the slide rail, and a second fixing plate is fixedly provided on both sides of the outer wall of the slide rail. A spring is sleeved on the outer wall of the slide rail. The end of the spline shaft is slidably connected to the interior of the adjacent first spline sleeve and second spline sleeve. The first electromagnetic block and the spline shaft are magnetically attracted. The worm gear and the adjacent worm wheel are engaged in transmission. The rack on the outer wall of the second gear plate is engaged with the rack on the outer wall of the gear plate. The spring is located between the sealing plate and the second fixing plate. The sealing plate is correspondingly arranged with the diverter pipe.

[0013] Another beneficial effect of the present invention is that by setting up an opening and closing assembly, the first electromagnetic block is used in conjunction with the magnetic attraction of the spline shaft to adjust the front and rear positions of the worm gear and cooperate with each worm wheel respectively. Then, the second motor is used to drive the front and rear sealing plates to move, thereby achieving the purpose of adjusting the opening and closing of each diversion pipe. The electromagnetic flowmeter body to be tested located on different pipes can be measured and calibrated sequentially to achieve continuous measurement and calibration, improve measurement and calibration efficiency, reduce the time spent on equipment downtime to replace the electromagnetic flowmeter body to be tested, and at the same time reduce the use of standard electromagnetic flowmeter bodies, thus reducing waste.

[0014] Given that existing electromagnetic flowmeter calibration devices can only measure and calibrate electromagnetic flowmeters of a single fixed size, which affects the applicability of the calibration device, a further improvement to a slitting device for plate production is proposed.

[0015] As a preferred embodiment of the electromagnetic flowmeter calibration device of the present invention, it further includes a rotating assembly disposed on one side of the placement frame. The rotating assembly includes a second motor mounted on the surface of the placement frame and a drive pulley mounted on the output shaft of the second motor. The outer wall of the drive pulley is connected to the outer wall of the driven pulley via a belt. A third rotating shaft is installed at the center of one end face of the driven pulley. The other end of the third rotating shaft passes through a bearing on the outer wall of the placement frame and is connected to a bearing on the inner wall of the placement frame at the center of the rotating frame.

[0016] As a preferred embodiment of the electromagnetic flowmeter calibration device of the present invention, it further includes a diameter adjustment component disposed inside the diversion pipe. The diameter adjustment component includes an adjustment cylinder disposed on the diversion pipe and a diameter adjustment plate slidably installed inside the adjustment cylinder. The top and bottom ends of the adjustment cylinder are provided with moving grooves, and the inner walls on both sides of the moving grooves are provided with sliding grooves.

[0017] In a preferred embodiment of the electromagnetic flowmeter calibration device of the present invention, a second electromagnetic block is embedded in the center of the inner walls on both sides of the slide groove, and a slider is fixed at the outer end of the inner walls on both sides of the adjusting plate, with an iron block embedded in the center of the slider; wherein the adjusting plate is slidably installed in the corresponding moving groove, the slider is slidably connected in the adjacent slide groove, and the second electromagnetic block and the iron block are attracted by magnetic force.

[0018] Another beneficial effect of the present invention is that by setting up a rotating component and a diameter adjustment component, the operation of the second motor can adjust the position of each bracket on the rotating frame, and under the magnetic force of the second electromagnetic block and the iron block, the distance between the two diameter adjustment plates can be adjusted, so as to achieve the measurement and calibration of various types of electromagnetic flowmeters to be tested. It has a wide range of applications. At the same time, the pipe diameter can be adjusted to a suitable size according to the electromagnetic flowmeter body of different sizes, so as to avoid damage to the electromagnetic flowmeter caused by the impact force of water flow.

[0019] In addition, the present invention also provides the following technical solution: a calibration method for an electromagnetic flowmeter calibration device, wherein the electromagnetic flowmeter calibration device performs calibration operations according to the following steps; S1: First, under the action of the second motor, adjust the bracket of the electromagnetic flowmeter body to be tested to the pipe connection. Then, apply force to the rotating ring to install the electromagnetic flowmeter body to be tested inside the bracket. Similarly, connect the two ends of the bracket to the pipes on both sides. S2: Then, by using the magnetic force between the second electromagnetic block and the iron block, the distance between the two sets of adjusting plates inside the adjusting cylinder is adjusted to achieve the purpose of adjusting the diameter of the diversion pipe. S3: Next, the position of the worm is adjusted by using the first electromagnetic block and the spline shaft to make the worm contact the worm wheel at one end. Then, the sealing plate is opened under the action of the first motor, and water flow is introduced into the electromagnetic flowmeter body under test and the standard electromagnetic flowmeter body in conjunction with the external circulation equipment to complete the measurement and calibration of the electromagnetic flowmeter body under test. S4: After the measurement and calibration of one electromagnetic flowmeter body is completed, repeat the operation in S3 to make the worm gear contact the worm wheel at the other end, and open the sealing plate at the other end under the action of the first motor to complete the subsequent measurement and calibration of the electromagnetic flowmeter body. Attached Figure Description

[0020] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the following description of the embodiments will be briefly introduced. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Wherein: Figure 1 This is a schematic diagram of the overall structure of the electromagnetic flowmeter calibration device in this invention.

[0021] Figure 2 This is a disassembly diagram of the electromagnetic flowmeter calibration device in this invention.

[0022] Figure 3 For the present invention Figure 2 A schematic diagram of the flow divider box in the structure.

[0023] Figure 4 For the present invention Figure 2 A schematic diagram of the reflux pipe in the structure.

[0024] Figure 5 For the present invention Figure 2 A schematic diagram of the structure in which the rack is placed.

[0025] Figure 6 For the present invention Figure 5 A schematic diagram of the rotating frame in the structure.

[0026] Figure 7 For the present invention Figure 6 Vertical sectional view of the components installed in the structure.

[0027] Figure 8 For the present invention Figure 7 Disassembly diagram of the components installed in the structure Figure 1 .

[0028] Figure 9 For the present invention Figure 7 Disassembly diagram of the components installed in the structure Figure 2 .

[0029] Figure 10 For the present invention Figure 3 Structural diagram of the opening and closing components in the structure Figure 1 .

[0030] Figure 11 For the present invention Figure 3 Structural diagram of the opening and closing components in the structure Figure 2 .

[0031] Figure 12 For the present invention Figure 11 Vertical sectional view of the first spline sleeve, the second spline sleeve, and the worm gear in the structure.

[0032] Figure 13 For the present invention Figure 3 A disassembly diagram of the diameter adjustment component in the structure.

[0033] Figure 14 For the present invention Figure 13 Vertical sectional view of the diameter adjustment component in the structure.

[0034] The attached diagram lists the components represented by each number as follows: 100. Diverter box; 101. Diverter pipe; 102. Placement rack; 103. Rotating rack; 104. Bracket; 200. Return pipe; 201. Standard electromagnetic flowmeter body; 202. Branch pipe; 300. Mounting assembly; 301. Connecting plate; 301a. Pressure cylinder; 301b. U-shaped plate; 302. U-shaped ring; 303. Rotating ring; 303a. Gear ring; 304. Screw; 304a. First fixing plate; 304b. First gear plate; 305. Tension spring; 306. Rotating plate; 306a. Connecting frame; 306b. First rotating shaft; 306c. Torsion spring; 400. Opening and closing assembly; 401. First side plate; 402. Second side plate; 403. First motor; 403a, First spline sleeve; 404, Second spline sleeve; 404a, First electromagnetic block; 405, Worm; 405a, Spline shaft; 406, Second rotating shaft; 406a, Worm wheel; 406b, Second gear plate; 407, Sealing plate; 407a, Gear plate; 408, Slide rail; 408a, Second fixed plate; 409, Spring; 500, Rotating assembly; 501, Second motor; 501a, Driving pulley; 502, Third rotating shaft; 502a, Driven pulley; 600, Diameter adjustment assembly; 601, Adjusting cylinder; 601a, Moving groove; 601b, Slide groove; 601c, Second electromagnetic block; 602, Diameter adjustment plate; 602a, Slider; 602b, Iron block. Detailed Implementation

[0035] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0036] Many specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and those skilled in the art can make similar extensions without departing from the spirit of the invention. Therefore, the invention is not limited to the specific embodiments disclosed below.

[0037] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that is mutually exclusive with other embodiments.

[0038] Secondly, the present invention is described in detail with reference to the schematic diagrams. When detailing the embodiments of the present invention, for ease of explanation, the cross-sectional views illustrating the device structure may be partially enlarged, not according to the usual scale. Furthermore, the schematic diagrams are merely examples and should not limit the scope of protection of the present invention. In addition, actual fabrication should include three-dimensional spatial dimensions of length, width, and depth. Example 1

[0039] Reference Figure 1 , Figure 2 , Figure 5 and Figure 6 This is the first embodiment of the present invention. This embodiment provides an electromagnetic flowmeter calibration device, which can make multiple sets of screws 304 rotate synchronously, realize the rapid disassembly and assembly of the electromagnetic flowmeter body under test, reduce the cumbersomeness of the traditional installation process, and achieve high work efficiency.

[0040] Specifically, the distribution box 100 has a distribution pipe 101 at both the front and rear ends of one side wall; the return pipe 200 is located on one side of the distribution box 100, and one end of the return pipe 200 is connected to two sets of branch pipes 202; a placement rack 102 is installed at both the front and rear of the distribution box 100 and the return pipe 200; a rotating rack 103 is installed on the upper part of the placement rack 102; brackets 104 are fixed at the four ends of the rotating rack 103, and the brackets 104 are of different sizes; and the mounting assembly 300 includes a docking plate 301 fixedly installed at one end of the branch pipe 202, one end of the distribution pipe 101, and both sides of the brackets 104; pressure cylinders 301a are evenly spaced along the circumference of one side wall of the docking plate 301.

[0041] For details, please refer to Figure 6 , Figure 7 , Figure 8 and Figure 9U-shaped plates 301b are fixed to both the front and rear ends of the outer wall of the mating plate 301. A U-shaped ring 302 is provided on one side wall of the mating plate 301. A rotating ring 303 is rotatably mounted on the outer wall of the U-shaped ring 302. A toothed ring 303a is fixed at the center of the inner wall of the rotating ring 303. A screw 304 is rotatably mounted at even intervals along the circumference of the U-shaped ring 302 on one side of the inner wall. The other end of the screw 304 passes through the through hole on the U-shaped ring 302 and the pressure cylinder 301a in sequence and is screwed into the threaded hole on the rotating plate 306. A first toothed disc 304b is fixed to one side of the outer wall of the screw 304, and a first fixing plate is fixed to the other side of the outer wall of the screw 304. 304a, a tension spring 305 is sleeved in the middle of the outer wall of the screw 304, a connecting frame 306a is fixed at the center of the outer wall of the rotating plate 306, a first rotating shaft 306b is fixed through one side of the inner side of the connecting frame 306a, the two ends of the first rotating shaft 306b are respectively rotatably installed in the bearings on the inner wall of the adjacent U-shaped plate 301b, and a torsion spring 306c is sleeved on the outer wall of the first rotating shaft 306b; wherein, the cross-section of the pressure cylinder 301a is convex, the rack on the outer wall of the toothed ring 303a meshes with the rack on the outer wall of the first toothed disc 304b, and the two ends of the tension spring 305 are respectively fixed on one side wall of the first fixed plate 304a and the inner wall of the pressure cylinder 301a; In use, the bracket 104 is first adjusted to the appropriate size to match the electromagnetic flowmeter body to be tested. Then, the electromagnetic flowmeter body is placed on the bracket 104. Next, the rotating plates 306 at the front and rear of the connecting plate 301 are pushed, causing them to rotate under the action of the first rotating shaft 306b and the torsion spring 306c, and engage with the outer side of the flange at the end of the electromagnetic flowmeter body. Then, force is applied to the rotating ring 303, causing it to rotate along the outer wall of the U-shaped ring 302. The rotation of the rotating ring 303 drives the toothed ring 303a on its inner wall to rotate. The rack on the outer wall of the toothed ring 303a meshes with the racks on the outer walls of multiple sets of first toothed discs 304b. Therefore, when the toothed ring 303a rotates, it drives the first toothed discs 304b to rotate synchronously, causing the screw 304 on its inner wall to rotate. The external thread on the outer wall of the screw 304 engages with the screw on the rotating plate 306. The internal thread in the threaded hole wall engages with the rotating plate 306, so when the screw 304 rotates, it connects and is installed with the rotating plate 306 under the action of the thread. This allows the rotating plate 306 to be stably locked on the outside of the flange of the electromagnetic flowmeter body under test. When the screw 304 is screwed in, it will move to one side and compress the tension spring 305. At the same time, multiple screws 304 are screwed onto the rotating plate 306 simultaneously, thus quickly realizing the installation of the electromagnetic flowmeter body under test, reducing the complexity of operation and increasing work efficiency. Similarly, during disassembly, the rotating ring 303 is rotated in the opposite direction. After the screw 304 separates from the rotating plate 306, the tension of the tension spring 305 can pull the first fixing plate 304a back to the inside of the pressure cylinder 301a, causing the U-shaped ring 302 to move outward. Then, under the action of the first rotating shaft 306b, the rotating plates 306 at the front and rear ends are flipped open, and finally the electromagnetic flowmeter body under test can be disassembled.

[0042] Furthermore, multiple branch pipes 101 can be installed on the branch box 100 according to actual usage needs. Multiple sets of branch pipes 202, placement racks 102, mounting components 300, and rotating components 500 are also installed simultaneously. Multiple sets of brackets 104 are installed, and various different models are available for installing different models of electromagnetic flowmeters. The rotating ring 303 is rotatably installed on the outer wall of the U-shaped ring 302. The external thread on the outer wall of the screw 304 is helically engaged with the internal thread in the threaded hole wall of the rotating plate 306. Under the elastic performance of the tension spring 305, the U-shaped ring 302 can be pulled to the outside. Under the elastic performance of the torsion spring 306c, the rotating plate 306 can be flipped to both sides.

[0043] Read in detail Figure 2 , Figure 3 and Figure 4 As shown, a standard electromagnetic flowmeter body 201 is bolted to the outer wall of the return pipe 200, the electromagnetic flowmeter body to be tested is installed inside the bracket 104, and an inlet pipe is provided at the center of the other side wall of the diversion box 100.

[0044] Furthermore, the return pipe 200 and the diversion box 100 are respectively connected to the external circulation equipment to achieve the purpose of water flow circulation. The external circulation equipment is existing technology, so it will not be described in detail here. Example 2

[0045] Reference Figure 3 , Figure 10 , Figure 11 and Figure 12 This is the second embodiment of the present invention. This embodiment is based on the previous embodiment, but the difference is that, in order to achieve continuous measurement and calibration of multiple electromagnetic flowmeter bodies to be tested, the position of the worm 405 is adjusted to mesh with the worm wheel 406a at different positions under the cooperation of the first electromagnetic block 404a and the spline shaft 405a, so as to realize the displacement adjustment of the sealing plate 407 at different positions and quickly open and close the diversion pipe 101.

[0046] Specifically, it also includes an opening and closing assembly 400 disposed inside the diverter box 100. The opening and closing assembly 400 includes a first side plate 401 fixed to the front end of the surface of the diverter box 100 and a first motor 403 mounted on the front end face of the first side plate 401. The output shaft of the first motor 403 passes through the bearing on the first side plate 401 and is connected to the first spline sleeve 403a through a coupling. A second side plate 402 is symmetrically disposed directly behind the first side plate 401. A second spline sleeve 404 is rotatably mounted at the center position of the front end face of the second side plate 402. A first electromagnetic block 404a is embedded in the inner wall of both the first spline sleeve 403a and the second spline sleeve 404. A worm gear 405 is disposed between the first spline sleeve 403a and the second spline sleeve 404. A spline shaft 405a is fixed at the center position of the front and rear end faces of the worm gear 405. A worm wheel 406a is disposed at both the front and rear ends of one side of the worm gear 405. A second rotating worm wheel 406a is fixed at the center position of the bottom of the worm wheel 406a. Shaft 406, the bottom end of the second rotating shaft 406 passes through the bearing on the surface of the diverter box 100 and is connected to the second gear disk 406b. A gear plate 407a is provided on one side of the second gear disk 406b, and one side wall of the gear plate 407a is fixed at the center of one side wall of the sealing plate 407. The sealing plate 407 is slidably mounted on the outer wall of the slide rail 408. A second fixing plate 408a is fixed on both sides of the outer wall of the slide rail 408, and a spring 409 is sleeved on the outer wall of the slide rail 408. Among them, the flower The end of the key shaft 405a is slidably connected inside the adjacent first spline sleeve 403a and second spline sleeve 404. The first electromagnetic block 404a and the spline shaft 405a are magnetically attracted. The worm 405 is driven and meshed with the adjacent worm wheel 406a. The rack on the outer wall of the second gear plate 406b meshes with the rack on the outer wall of the gear plate 407a. The spring 409 is located between the sealing plate 407 and the second fixing plate 408a. The sealing plate 407 is correspondingly arranged with the diverter pipe 101. In use, during the measurement and calibration of the electromagnetic flowmeter body, the first electromagnetic block 404a in the first spline sleeve 403a is energized. After energization, the first electromagnetic block 404a generates a magnetic attraction with the adjacent spline shaft 405a, causing the worm 405 to slide towards the front end with the assistance of the spline shaft 405a and the first spline sleeve 403a. At this time, the worm 405 meshes with the worm wheel 406a located in front. Then, the first motor 403 is started, and the output shaft of the first motor 403 rotates in the coupling. The first spline sleeve 403a, worm 405, and second spline sleeve 404 are rotated by the worm gear 405. The rotation of the worm gear 405 drives the worm wheel 406a at the front end to rotate, causing the second shaft 406 and the second gear plate 406b to rotate synchronously. The rack on the outer wall of the second gear plate 406b meshes with the rack on the outer wall of the adjacent gear plate 407a. Therefore, when the second gear plate 406b rotates, it drives the rack to move, causing the sealing plate 407 to move along the outer wall of the slide rail 408 and compress the spring 409. At this time, the diverter 1 located at the front... 01 is turned on, and then water is pumped into the pipeline using an external circulation device, causing the water to flow in the body of the electromagnetic flowmeter under test and the body of the standard electromagnetic flowmeter 201. The accuracy of the data of the electromagnetic flowmeter under test is judged by observing the values ​​of the electromagnetic flowmeter under test and the standard electromagnetic flowmeter 201. After the electromagnetic flowmeter under test is measured, the power supply to the second electromagnetic block 601c in front is stopped, and the power supply to the second electromagnetic block 601c in the second spline sleeve 404 is turned on, causing the worm gear 405 to move backward and connect with the rear... The worm gear 406a contacts the electromagnetic flowmeter, thereby opening the sealing plate 407 located at the rear branch pipe 101 under the action of the transmission structure, and continuing to measure and calibrate the electromagnetic flowmeter body to be tested located at the rear. By adjusting the opening and closing of each branch pipe 101, the electromagnetic flowmeter bodies to be tested located on different pipes are measured and calibrated in sequence, realizing continuous measurement and calibration, improving measurement and calibration efficiency, reducing the time spent on equipment downtime to replace the electromagnetic flowmeter body to be tested, and reducing the use of standard electromagnetic flowmeter bodies 201, thus reducing waste.

[0047] Furthermore, by supplying power to the first electromagnetic block 404a at different positions, magnetic attraction is generated in conjunction with the spline shaft 405a, causing the worm 405 to move and adjust its position in the spline shaft 405a, the first spline sleeve 403a, and the second spline sleeve 404. After the worm 405 is disengaged from the worm wheel 406a on one side, the corresponding sealing plate 407 will be pushed to the initial position under the action of the elastic properties of the spring 409, thus closing the diversion pipe 101. Example 3

[0048] Reference Figure 3 , Figure 13 and Figure 14This is the third embodiment of the present invention. This embodiment is based on the previous embodiment, but the difference is that, in order to enable the installation of various types of electromagnetic flow meters, the second motor 501 is used to adjust the connection between the brackets 104 of different types and the pipes on both sides, and with the cooperation of the second electromagnetic block 601c and the iron block 602b, the distance between the two sets of adjusting plates 602 is adjusted to reduce the impact of water flow on different types of electromagnetic flow meters.

[0049] Specifically, it also includes a rotating assembly 500 disposed on one side of the placement rack 102. The rotating assembly 500 includes a second motor 501 mounted on the surface of the placement rack 102 and a drive pulley 501a mounted on the output shaft of the second motor 501. The outer wall of the drive pulley 501a is connected to the outer wall of the driven pulley 502a via a belt. A third rotating shaft 502 is mounted at the center of one end face of the driven pulley 502a. The other end of the third rotating shaft 502 passes through a bearing on the outer wall of the placement rack 102 and is connected to a bearing on the inner wall of the placement rack 102 at the center of the interior of the rotating rack 103. It also includes a diameter adjustment assembly 600 disposed inside the diversion pipe 101. The diameter adjustment assembly 600 includes a diameter adjustment assembly 600 disposed inside the diversion pipe 101. The flow tube 101 has an adjusting cylinder 601 and an adjusting plate 602 that is slidably installed inside the adjusting cylinder 601. The top and bottom of the adjusting cylinder 601 are provided with moving grooves 601a, and the inner walls on both sides of the moving grooves 601a are provided with sliding grooves 601b. The center of the inner walls on both sides of the sliding grooves 601b is embedded with a second electromagnetic block 601c. The outer ends of the two sides of the adjusting plate 602 are fixed with sliders 602a, and the center of the sliders 602a is embedded with iron blocks 602b. The adjusting plate 602 is slidably installed inside the corresponding moving groove 601a, and the sliders 602a are slidably connected inside the adjacent sliding grooves 601b. The second electromagnetic block 601c and the iron block 602b are attracted by magnetic force. In use, when it is necessary to measure and calibrate the electromagnetic flowmeter body of different sizes, the second motor 501 is started. The output shaft of the second motor 501 rotates, driving the drive pulley 501a to rotate. The outer wall of the drive pulley 501a is connected to the outer wall of the driven pulley 502a via a belt. Therefore, when the drive pulley 501a rotates, it will drive the driven pulley 502a to rotate under the action of the belt. The rotation of the driven pulley 502a will drive the third rotating shaft 502 to rotate, causing the rotating frame 103 and the bracket 104 to rotate, thereby adjusting the electromagnetic flowmeter body to be measured. The bracket 104 of the body size rotates to the connection of the pipes at both ends to achieve measurement and calibration of various models of electromagnetic flowmeters to be tested, with a wide range of applications. At the same time, the second electromagnetic block 601c in the slide groove 601b is energized. After the second electromagnetic block 601c is energized, it is magnetically attracted to the iron block 602b in the slider 602a, so that the two adjusting plates 602 slide inside the moving groove 601a to adjust the distance between them. The pipe diameter can be adjusted to a suitable size according to the electromagnetic flowmeter body of different sizes to be tested, avoiding damage to the electromagnetic flowmeter caused by water flow impact.

[0050] Furthermore, the driving pulley 501a and the driven pulley 502a are connected by a belt, which serves as a transmission connection. Through the magnetic force between the second electromagnetic block 601c and the iron block 602b, the two sets of adjusting plates 602 can be moved and the distance between them can be adjusted to achieve the purpose of adjusting the pipe diameter. Example 4

[0051] This embodiment is the fourth embodiment of the present invention. This embodiment provides a calibration method for an electromagnetic flowmeter calibration device, specifically including the following steps; S1: First, under the action of the second motor 501, the bracket 104 of the electromagnetic flowmeter body to be tested is adjusted to the pipe connection. Then, force is applied to the rotating ring 303 to install the electromagnetic flowmeter body to be tested inside the bracket 104. Similarly, the two ends of the bracket 104 are connected to the pipes on both sides. S2: Then, by using the magnetic force between the second electromagnetic block 601c and the iron block 602b, the distance between the two sets of adjusting plates 602 inside the adjusting cylinder 601 is adjusted to achieve the purpose of adjusting the diameter of the diversion pipe 101. S3: Next, the position of the worm 405 is adjusted by using the first electromagnetic block 404a and the spline shaft 405a to make the worm 405 contact with the worm wheel 406a at one end. Then, under the action of the first motor 403, the sealing plate 407 is opened, and water flow is introduced into the electromagnetic flowmeter body to be tested and the standard electromagnetic flowmeter body 201 in conjunction with the external circulation equipment to complete the measurement and calibration of the electromagnetic flowmeter body to be tested. S4: After the measurement and calibration of one electromagnetic flowmeter body is completed, repeat the operation in S3 to make the worm 405 contact the worm wheel 406a at the other end, and open the sealing plate 407 at the other end under the action of the first motor 403, and complete the subsequent measurement and calibration of the electromagnetic flowmeter body to be tested.

[0052] Additionally, it should be noted that components not described in detail in this article are existing technologies.

[0053] It is important to note that the constructions and arrangements of this application shown in several different exemplary embodiments are merely illustrative. Although only a few embodiments are described in detail in this disclosure, those who consult this disclosure will readily understand that many modifications are possible (e.g., variations in the size, dimensions, structure, shape, and proportions of various elements, as well as parameter values ​​(e.g., temperature, pressure, etc.), mounting arrangements, use of materials, color, orientation, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in this application. For example, an element shown as integrally formed may be composed of multiple parts or elements, the position of elements may be inverted or otherwise altered, and the nature or number or position of discrete elements may be changed or altered. Other substitutions, modifications, alterations, and omissions may be made in the design, operation, and arrangement of the exemplary embodiments without departing from the scope of the invention. Therefore, the invention is not limited to the particular embodiments but extends to a variety of modifications that still fall within the scope of the appended claims.

[0054] Furthermore, in order to provide a concise description of exemplary embodiments, not all features of actual embodiments (i.e., those features that are not relevant to the currently considered best mode for carrying out the invention, or those features that are not relevant to implementing the invention) may be omitted.

[0055] It should be understood that numerous specific implementation decisions can be made during the development of any practical implementation, such as in any engineering or design project. Such development efforts may be complex and time-consuming, but for those skilled in the art who benefit from this disclosure, the development effort will be a routine work of design, manufacturing, and production without requiring much experimentation.

[0056] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. An electromagnetic flowmeter calibration device, characterized in that: include, The flow divider box (100) has flow divider pipes (101) at both the front and rear ends of one side wall. A return pipe (200) is located on one side of the distribution box (100). One end of the return pipe (200) is connected to two sets of branch pipes (202). Placement racks (102) are installed at both the front and rear sides of the distribution box (100) and the return pipe (200). A rotating rack (103) is provided above the interior of the placement rack (102). Each of the four ends of the rotating rack (103) is fixed with a bracket (104), and the brackets (104) are of different sizes. The mounting assembly (300) includes a docking plate (301) fixedly mounted at one end of the branch pipe (202), one end of the diversion pipe (101), and both sides of the bracket (104). A pressure cylinder (301a) is evenly spaced along the circumference of one side wall of the docking plate (301). U-shaped plates (301b) are fixedly mounted at both the front and rear ends of the outer wall of the docking plate (301). A U-shaped ring (302) is provided on one side wall of the docking plate (301). A rotating ring (303) is rotatably mounted on the outer wall of the U-shaped ring (302). A toothed ring (303a) is fixedly mounted at the center of the inner wall of the rotating ring (303). A screw (304) is evenly spaced along the circumference of one side of the inner wall of the U-shaped ring (302). The other end of the screw (304) passes through the through hole on the U-shaped ring (302) and the threaded hole on the pressure cylinder (301a) and the rotating plate (306) in sequence. A first gear plate (304b) is fixed on one side of the outer wall of the screw (304), and a first fixing plate (304a) is fixed on the other side of the outer wall of the screw (304). A tension spring (305) is sleeved in the middle of the outer wall of the screw (304). A connecting frame (306a) is fixed at the center of the outer wall of the rotating plate (306). A first rotating shaft (306b) is fixed through one side of the inner wall of the connecting frame (306a). The two ends of the first rotating shaft (306b) are respectively rotatably installed in the bearings on the inner wall of the adjacent U-shaped plate (301b). A torsion spring (306c) is sleeved on the outer wall of the first rotating shaft (306b). The cross-section of the pressure cylinder (301a) is convex, the rack on the outer wall of the toothed ring (303a) meshes with the rack on the outer wall of the first toothed disc (304b), and the two ends of the tension spring (305) are respectively fixed on one side wall of the first fixing plate (304a) and the inner wall of the pressure cylinder (301a).

2. The electromagnetic flowmeter calibration device as described in claim 1, characterized in that: A standard electromagnetic flowmeter body (201) is bolted to the outer wall of the return pipe (200), and the electromagnetic flowmeter body to be tested is installed inside the bracket (104). An inlet pipe is provided at the center of the other side wall of the diversion box (100).

3. The electromagnetic flowmeter calibration device as described in claim 1, characterized in that: It also includes an opening and closing assembly (400) disposed inside the diversion box (100). The opening and closing assembly (400) includes a first side plate (401) fixed to the front end of the surface of the diversion box (100) and a first motor (403) mounted on the front end face of the first side plate (401). The output shaft of the first motor (403) passes through the bearing on the first side plate (401) and is connected to the first spline sleeve (403a) through a coupling. A second side plate (402) is symmetrically disposed directly behind the first side plate (401).

4. The electromagnetic flowmeter calibration device as described in claim 3, characterized in that: A second spline sleeve (404) is rotatably mounted at the center of the front end face of the second side plate (402). A first electromagnetic block (404a) is embedded in the inner wall of both the first spline sleeve (403a) and the second spline sleeve (404). A worm gear (405) is provided between the first spline sleeve (403a) and the second spline sleeve (404). A spline shaft (405a) is fixed at the center of the front and rear end faces of the worm gear (405).

5. The electromagnetic flowmeter calibration device as described in claim 4, characterized in that: Worm gears (406a) are provided at both the front and rear ends of one side of the worm (405). A second rotating shaft (406) is fixed at the bottom center of the worm gear (406a). The bottom end of the second rotating shaft (406) passes through the bearing on the surface of the diverter box (100) and is connected to the second gear plate (406b). A toothed plate (407a) is provided on one side of the second gear plate (406b). One side wall of the toothed plate (407a) is fixed at the center of one side wall of the sealing plate (407).

6. The electromagnetic flowmeter calibration device as described in claim 5, characterized in that: The sealing plate (407) is slidably installed on the outer wall of the slide rail (408). A second fixing plate (408a) is fixed on both sides of the outer wall of the slide rail (408). A spring (409) is sleeved on the outer wall of the slide rail (408). The spline shaft (405a) is slidably connected at its end to the interior of the adjacent first spline sleeve (403a) and second spline sleeve (404). The first electromagnetic block (404a) and the spline shaft (405a) are magnetically attracted to each other. The worm (405) is driven to mesh with the adjacent worm wheel (406a). The rack on the outer wall of the second gear plate (406b) meshes with the rack on the outer wall of the gear plate (407a). The spring (409) is located between the sealing plate (407) and the second fixing plate (408a). The sealing plate (407) is correspondingly arranged with the diverter pipe (101).

7. The electromagnetic flowmeter calibration device as described in claim 1, characterized in that: It also includes a rotating assembly (500) disposed on one side of the placement rack (102). The rotating assembly (500) includes a second motor (501) mounted on the surface of the placement rack (102) and a drive pulley (501a) mounted on the output shaft of the second motor (501). The outer wall of the drive pulley (501a) is connected to the outer wall of the driven pulley (502a) via a belt. A third rotating shaft (502) is installed at the center of one end face of the driven pulley (502a). The other end of the third rotating shaft (502) passes through the bearing on the outer wall of the placement rack (102) and the center of the rotating rack (103) and is connected to the bearing on the inner wall of the placement rack (102).

8. The electromagnetic flowmeter calibration device as described in claim 7, characterized in that: It also includes a diameter adjustment assembly (600) disposed inside the diverter pipe (101). The diameter adjustment assembly (600) includes an adjustment cylinder (601) disposed on the diverter pipe (101) and a diameter adjustment plate (602) slidably installed above and below the adjustment cylinder (601). The top and bottom ends of the adjustment cylinder (601) are provided with moving grooves (601a), and the inner walls on both sides of the moving grooves (601a) are provided with sliding grooves (601b).

9. The electromagnetic flowmeter calibration device as described in claim 8, characterized in that: The inner walls of both sides of the slide (601b) are each embedded with a second electromagnetic block (601c), and the outer ends of the two side walls of the adjusting plate (602) are fixed with sliders (602a), and the inner center of the sliders (602a) is embedded with an iron block (602b). The adjusting plate (602) is slidably installed inside the corresponding moving groove (601a), the slider (602a) is slidably connected inside the adjacent sliding groove (601b), and the second electromagnetic block (601c) and the iron block (602b) are magnetically attracted to each other.

10. A calibration method for an electromagnetic flowmeter calibration device, characterized in that: The electromagnetic flowmeter calibration device according to any one of claims 6 to 9 performs calibration operations according to the following steps; S1: First, under the action of the second motor (501), the bracket (104) of the electromagnetic flowmeter body to be tested is adjusted to the pipe connection. Then, force is applied to the rotating ring (303) to install the electromagnetic flowmeter body to be tested inside the bracket (104). Similarly, the two ends of the bracket (104) are connected to the pipes on both sides. S2: Then, by using the magnetic force between the second electromagnetic block (601c) and the iron block (602b), the distance between the two sets of adjusting plates (602) inside the adjusting cylinder (601) is adjusted to achieve the purpose of adjusting the diameter of the diverter pipe (101); S3: Next, the position of the worm (405) is adjusted by using the first electromagnetic block (404a) and the spline shaft (405a) to make the worm (405) contact the worm wheel (406a) at one end. Then, under the action of the first motor (403), the sealing plate (407) is opened, and water flow is introduced into the electromagnetic flowmeter body to be tested and the standard electromagnetic flowmeter body (201) in conjunction with the external circulation equipment to complete the measurement and calibration of the electromagnetic flowmeter body to be tested. S4: After the measurement and calibration of one electromagnetic flowmeter body is completed, repeat the operation in S3 to make the worm (405) contact the worm wheel (406a) at the other end, and open the sealing plate (407) at the other end under the action of the first motor (403) to complete the subsequent measurement and calibration of the electromagnetic flowmeter body.

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