Electromagnetic flowmeter sealing performance test equipment

Abstract

The invention relates to the technical field of fluid measuring equipment detection, in particular to electromagnetic flowmeter sealing performance testing equipment which comprises a base, a mounting cover and a control console are sequentially arranged at the top of the base from left to right, a front opening is formed in the front side of the mounting cover, and a mounting assembly used for mounting a testing pipeline is arranged at the bottom of the mounting cover. An abutting assembly is installed on the top of the installation cover, and a vibration mechanism for testing the dynamic sealing performance of the electromagnetic flowmeter is installed on the side wall of the installation cover. According to the invention, closing and pressurization of the electromagnetic flowmeter and the test pipeline are completed through the mounting assembly and the pressing assembly, and accurate detection of static sealing performance is realized; meanwhile, the side wall of the electromagnetic flowmeter is subjected to multi-angle dynamic knocking through the vibration mechanism, the vibration environment in the actual working condition is simulated, and the air pressure fluctuation is continuously observed, so that the dynamic sealing performance is comprehensively evaluated, the test content is more comprehensive through the static and dynamic combined test mode, and the result has more practical significance.

Description

Technical Field

[0001] The present invention relates to the technical field of fluid measurement device detection, and specifically to a sealing performance testing device for electromagnetic flowmeters. Background Art

[0002] An electromagnetic flowmeter is an instrument that measures the volumetric flow rate of conductive liquids based on Faraday's law of electromagnetic induction and is widely used in industrial process control, water treatment, chemical engineering, and other fields. The structure of existing electromagnetic flowmeters is as Figure 11 shown. The electromagnetic flowmeter consists of flanges on both sides, a pipeline in the test area, and a dashboard connected to the pipeline. Since the electromagnetic flowmeter needs to ensure no leakage during operation to guarantee the accuracy of measurement data and avoid potential safety risks or environmental pollution caused by fluid leakage, it is necessary to test the sealing performance of the electromagnetic flowmeter.

[0003] The equipment actually used to test the electromagnetic flowmeter usually first connects and seals the electromagnetic flowmeter to the test pipeline through flanges, and at the same time uses a pressurizing device to inject gas or liquid into it to a set pressure, and monitors the pressure decay under static conditions through a sensor to determine whether there is leakage.

[0004] Although the above testing method can perform static testing on the sealing performance of the electromagnetic flowmeter, in actual use, the electromagnetic flowmeter may be affected by various vibrations (such as vibrations transmitted by pipelines at both ends or vibrations generated during its own operation). These vibrations may cause dynamic interference to its sealing performance. However, due to the lack of the ability to simulate complex vibration environments in existing equipment, it is difficult to comprehensively evaluate the sealing performance of the electromagnetic flowmeter under dynamic working conditions; in addition, if vibration testing is added to perform dynamic sealing performance testing, and existing vibration testing mostly uses a single-direction or single-position testing method, while the actual vibration sources have multi-directionality and position diversity, resulting in insufficient matching between the test data and the actual working conditions. Summary of the Invention

[0005] To solve the above technical problems, the technical solution adopted by the present invention is as follows: An electromagnetic flowmeter sealing performance testing device includes a base, on the top of which an installation cover and a console are sequentially arranged from left to right. The front side of the installation cover is provided with a front opening, and its bottom is provided with an installation component for installing a test pipeline. A pressing component is installed on the top of the installation cover, and a vibration mechanism for testing the dynamic sealing performance of the electromagnetic flowmeter is installed on the side wall of the installation cover; the installation component cooperates with the pressing component to combine the electromagnetic flowmeter and the test pipeline and complete the enclosure; the vibration mechanism includes installation columns symmetrically fixed on the inner wall of the installation cover from left to right. A fixed ring is jointly installed between the two installation columns. An installation notch is provided on the front side of the fixed ring. Limiting columns are symmetrically fixed on the left and right sides of the bottom of the fixed ring. A moving ring is slidably connected to the two limiting columns together. An avoidance notch is provided on the front side of the moving ring. A pushing component is connected between the fixed ring and the moving ring; three sliding components capable of knocking on the electromagnetic flowmeter are circumferentially and evenly arranged on the side surface of the moving ring. An adjusting component capable of adjusting the knocking angle of the sliding component is connected between the sliding component and the fixed ring. Guide components are fixed on the inner side wall of the installation cover corresponding to the position of each sliding component. The purpose of multi-position and multi-angle knocking vibration of the sliding component is realized through the cooperation of the guide component and the adjusting component.

[0006] Preferably, the installation component includes an installation seat fixed on the top of the installation cover. A positioning square groove is provided in the installation seat. Horizontally guiding columns are symmetrically and horizontally slidably connected to the left and right side walls of the installation seat. The end of the horizontally guiding column located outside the installation seat is fixed with an installation circular plate. A compression spring is connected between the installation circular plate and the installation seat. The end of the horizontally guiding column located inside the installation seat is fixed with a limiting folding plate.

[0007] Preferably, the pressing component includes a hydraulic cylinder fixed on the top of the installation cover. The pushing end of the hydraulic cylinder is fixed with a closing plate. A gas booster is installed at the bottom of the closing plate. A pressure sensor is installed at the bottom of the gas booster through a telescopic structure.

[0008] Preferably, the telescopic structure includes a limiting sleeve fixed at the bottom of the gas booster. An embedded rod is vertically slidably connected inside the limiting sleeve. A plurality of positioning holes are vertically and evenly provided on the limiting sleeve. A positioning hole is provided on the embedded rod. A positioning pin is jointly connected between the positioning hole and the positioning hole at the corresponding position.

[0009] Preferably, the pushing component includes a connecting plate fixed on the fixed ring. A counterpoint plate corresponding to the connecting plate is fixed on the outer ring surface of the moving ring. A cylinder is installed between the connecting plate and the counterpoint plate.

[0010] Preferably, the sliding member includes a U-shaped plate slidably connected to the moving ring. The two vertical segments of the U-shaped plate are slidably engaged with the moving ring. Square plates are symmetrically fixed to the opposite sides of the two vertical segments of the U-shaped plate. A return spring is connected between the square plate and the moving ring. A rotating rod is rotatably installed between the two vertical segments of the U-shaped plate. An auxiliary structure for improving the vibration effect is provided between the rotating rod and the U-shaped plate. One end of the rotating rod close to the guiding member is connected to the adjusting member.

[0011] Preferably, the auxiliary structure includes a through groove opened in the rotating rod. A sliding rod is slidably connected in the through groove. A tension spring is connected between the sliding rod and the through groove. Avoidance grooves are opened on the sides of the rotating rod parallel to the vertical segments of the U-shaped plate. Guide rods are fixed at the positions of the sliding rod corresponding to the avoidance grooves. Guide grooves are opened on the two vertical segments of the U-shaped plate.

[0012] Preferably, the guide groove is jointly composed of a square segment and inclined segments symmetrically distributed above and below the square segment. By matching the guide rod with the square segment of the guide groove, the sliding rod and the rotating rod can strike the electromagnetic flowmeter more efficiently. A coordination groove is provided in the rotating rod. A trigger rod is fixed at the position of the sliding rod corresponding to the coordination groove.

[0013] Preferably, the adjusting member includes a right-angled connecting rod horizontally slidably connected to the side wall of the fixed ring. The vertical segment of the right-angled connecting rod is hinged with a telescopic rod. The telescopic end of the telescopic rod is connected to the sliding member.

[0014] Preferably, the guiding member includes a fixing plate fixed to the sliding member. One end of the fixing plate away from the moving ring is fixed with a guiding track rod. An installation block is fixed on the inner wall of the installation cover corresponding to the guiding track rod. A plurality of guiding plates are vertically and evenly rotatably installed on the installation block. A torsion spring is connected between the guiding plate and the installation block. A limiting block for limiting the guiding plate is fixed on the side of the installation block and at the bottom of the guiding plate. A track groove for the guiding track rod to pass through is opened on the guiding plate.

[0015] The beneficial effects of the present invention are as follows: First, the present invention completes the sealing and pressurization of the electromagnetic flowmeter and the test pipeline through the installation component and the pressing component, and combines with the console to monitor the air pressure change in real time to achieve the precise detection of the static sealing performance; at the same time, the vibration mechanism performs multi-angle dynamic knocking on the side wall of the electromagnetic flowmeter to simulate the vibration environment in the actual working condition, and continuously observes the air pressure fluctuation, so as to comprehensively evaluate the dynamic sealing performance. Furthermore, through the test method combining static and dynamic, the test content is more comprehensive and the result is more meaningful in practice.

[0016] Second, the present invention adjusts the knocking angle of the sliding member through an adjusting member, and uses a guiding member to guide the guiding track rod to move along a preset track groove, so that the rotating rod can knock the side wall of the electromagnetic flowmeter at different angles; this multi-angle knocking method for making the electromagnetic flowmeter vibrate simulates various complex directions of the pipeline transmission vibration and its own operation vibration in the actual use of the electromagnetic flowmeter, thus significantly improving the authenticity and coverage of the dynamic test, and making the vibration more multi-directional and diverse in vibration positions.

[0017] Third, the present invention adopts a sliding rod that cooperates with a guiding rod and a guiding groove and realizes elastic expansion and contraction under the action of a tension spring, and quickly resets under the drive of a reset spring; when the rotating rod rotates to the horizontal position and the sliding rod contacts the electromagnetic flowmeter, the cooperation between the trigger rod and the coordination groove further triggers a secondary knock; the way that the sliding rod and the rotating rod cooperate to complete the secondary knock greatly improves the knocking frequency and force, thereby enhancing the vibration frequency and amplitude of the electromagnetic flowmeter, making the dynamic seal performance test more sensitive and closer to the actual vibration working conditions, and thus making the test results more practically significant. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The present invention will be further described below in conjunction with the drawings and embodiments.

[0019] Figure 1 It is a schematic structural diagram of the present invention.

[0020] Figure 2 It is a schematic structural diagram of the first perspective after removing part of the console of the mounting cover and the vibration mechanism in the present invention.

[0021] Figure 3 It is a schematic structural diagram of the second perspective after removing part of the console of the mounting cover and the vibration mechanism in the present invention.

[0022] Figure 4 It is a front partial sectional view of the mounting component in the present invention.

[0023] Figure 5 It is a sectional structural diagram of the mounting cover and the partial vibration mechanism in the present invention.

[0024] Figure 6 It is a partial sectional structural diagram of the vibration mechanism in the present invention.

[0025] Figure 7 It is a side partial sectional view of the vibration mechanism in the present invention.

[0026] Figure 8 It is a partial sectional view of the vibration mechanism along the sliding rod in the present invention.

[0027] Figure 9 It is a schematic diagram of the change in the rotation angle of the rotating rod when the moving ring moves downward from top to bottom in the present invention.

[0028] Figure 10 This is a schematic cross-sectional view of the structure during the test of the electromagnetic flowmeter of the present invention.

[0029] Figure 11 This is a schematic structural diagram of the electromagnetic flowmeter.

[0030] In the figure: 1, base; 2, console; 3, installation cover; 31, installation component; 311, installation seat; 312, positioning square groove; 313, horizontal guide post; 314, installation round plate; 315, limiting folding plate; 32, pressing component; 321, hydraulic cylinder; 322, closing plate; 323, gas booster; 324, pressure sensor; 325, limiting sleeve; 326, embedded rod; 4, vibration mechanism; 41, installation column; 411, fixing ring; 412, installation notch; 413, limiting column; 414, moving ring; 42, pushing member; 421, connecting plate; 422, alignment plate; 423, air cylinder; 43, sliding member; 431, U-shaped plate; 432, rotating rod; 433, sliding rod; 434, avoidance groove; 435, guide rod; 436, guide groove; 437, trigger rod; 44, adjusting member; 441, right-angle connecting rod; 442, telescopic rod; 45, guiding member; 451, fixing plate; 452, guiding track rod; 453, installation block; 454, guiding plate; 455, limiting block; 456, track groove. Detailed implementation manners

[0031] The embodiments of the present invention will be described in detail below. The described embodiments are exemplary and are only used to explain the present invention and should not be construed as a limitation to the present invention. For those not specified in the embodiments regarding specific technologies or conditions, they shall be carried out according to the technologies or conditions described in the literature in this field or according to the product specifications.

[0032] Refer to Figure 1 - Figure 2 , a sealing performance test device for an electromagnetic flowmeter, including a base 1. An installation cover 3 and a console 2 are sequentially arranged on the top of the base 1 from left to right. The front side of the installation cover 3 is provided with a front opening, and an installation component 31 for installing a test pipeline is arranged at the bottom thereof. A pressing component 32 is installed on the top of the installation cover 3, and a vibration mechanism 4 for testing the dynamic sealing performance of the electromagnetic flowmeter is installed on the side wall of the installation cover 3.

[0033] The present invention combines and closes the electromagnetic flowmeter and the test pipeline through the installation component 31 and the pressing component 32, and at the same time, the vibration mechanism 4 knocks on the side wall of the electromagnetic flowmeter to make it vibrate, so as to simulate the situation where the actual electromagnetic flowmeter is vibrated by the vibration transmitted by the installation pipeline during use or the vibration generated by the operation of the electromagnetic flowmeter itself, thereby dynamically testing the sealing performance of the electromagnetic flowmeter during actual use.

[0034] Specifically, first, install the test pipeline for testing the sealing performance of the electromagnetic flowmeter at the installation component 31. After the installation of the test pipeline is completed, the tester places the electromagnetic flowmeter on the test pipeline and quickly aligns the flanges at the corresponding positions on the test pipeline and the electromagnetic flowmeter. After the alignment is completed, connect the test pipeline and the electromagnetic flowmeter with screws. Subsequently, the tester controls the pressing component 32 through the console 2 to complete the pressing action on the top of the electromagnetic flowmeter, continuously pressurize the inside of the electromagnetic flowmeter and the test pipeline, and keep it stable for a period of time. Then, observe the air pressure changes inside the electromagnetic flowmeter and the test pipeline throughout the process through the cooperation of the console 2 and the pressing component 32. After the observation is completed, tap the electromagnetic flowmeter through the vibration mechanism 4 to make it vibrate. At this time, continuously observe the air pressure changes inside the electromagnetic flowmeter and the test pipeline throughout the process through the cooperation of the console 2 and the pressing component 32, so as to evaluate the sealing performance of the electromagnetic flowmeter according to the air pressure changes.

[0035] Refer to Figure 2 - Figure 4 , the installation component 31 includes an installation seat 311 fixed on the top of the installation cover 3. A positioning square groove 312 is opened in the installation seat 311. Horizontally sliding columns 313 are symmetrically and horizontally connected to the left and right sides of the side wall of the installation seat 311. One end of the horizontally sliding column 313 outside the installation seat 311 is fixed with an installation circular plate 314. A compression spring is connected between the installation circular plate 314 and the installation seat 311. One end of the horizontally sliding column 313 inside the installation seat 311 is fixed with a limiting folding plate 315.

[0036] The installation component 31 is used for quickly installing the test pipeline. It mainly completes the quick installation of the test pipeline by matching the positioning square block preset on the test pipeline with the positioning square groove 312. At the same time, by guiding the test pipeline during the installation process through the limiting folding plate 315, it can not only ensure the quick installation of the test pipeline, but also adapt to the installation of test pipelines of different sizes.

[0037] Specifically, first, the tester vertically inserts the test pipeline into the installation seat 311, and then limits the test pipeline through the limiting folding plate 315. With the limiting effect of the limiting folding plate 315, the positioning square block at the bottom of the test pipeline will be pressed against the positioning square groove 312 at the bottom of the installation seat 311. Then rotate the test pipeline until the positioning square block is completely embedded with the positioning square groove 312 to complete the installation of the test pipeline.

[0038] Refer to Figure 2 and Figure 10 , the pressing component 32 includes a hydraulic cylinder 321 fixed on the top of the installation cover 3. A closing plate 322 is fixed at the pushing end of the hydraulic cylinder 321. A gas booster 323 is installed at the bottom of the closing plate 322. A pressure sensor 324 is installed at the bottom of the gas booster 323 through a telescopic structure.

[0039] The telescopic structure includes a limit sleeve 325 fixed to the bottom of the gas booster 323. An inner embedded rod 326 is vertically and slidably connected within the limit sleeve 325. A plurality of positioning holes are vertically and evenly formed in the limit sleeve 325. A counterposition hole is formed in the inner embedded rod 326. A positioning pin is commonly connected between the counterposition hole and the positioning hole at the corresponding position.

[0040] The pressing assembly 32 is used to cooperate with the control console 2 to pressurize the test pipeline and the inside of the electromagnetic flowmeter and continuously detect the air pressure, so as to detect the leakage situation in real time. At the same time, the height of the pressure sensor 324 on the lower side is adjusted by the telescopic structure, so as to adapt to electromagnetic flowmeters of different lengths, and further ensure that the pressure sensor 324 can detect the connection position of the test pipeline and the electromagnetic flowmeter in real time.

[0041] Specifically, after the test pipeline is installed, the tester concentrically places the electromagnetic flowmeter to be tested on the test pipeline, and a sealing gasket is provided between the two. Then, by rotating the electromagnetic flowmeter to be tested, the flanges of the electromagnetic flowmeter to be tested and the test pipeline are aligned. Subsequently, the two are fixed with screws in cooperation with the flanges on the test pipeline and the electromagnetic flowmeter. After the electromagnetic flowmeter is installed, first quickly adjust the telescopic structure according to the length of the electromagnetic flowmeter. Remove the positioning pin, and then adjust the vertical position of the inner embedded rod 326 until the counterposition hole on the inner embedded rod 326 is aligned with the positioning hole again. At this time, insert the positioning pin into the positioning hole and the counterposition hole. After the height adjustment of the pressure sensor 324 is completed, control the hydraulic cylinder 321 through the control console 2 to drive the closing plate 322, the gas booster 323 and the pressure sensor 324 to move downward. At the same time, a sealing gasket is placed in advance at the position where the closing plate 322 contacts the electromagnetic flowmeter. After the closing plate 322 presses against the top of the electromagnetic flowmeter, the pressure sensor 324 can move to the connection position of the electromagnetic flowmeter and the test pipeline. Subsequently, continuously pressurize the inside of the electromagnetic flowmeter and the test pipeline through the gas booster 323 and stabilize for a period of time.

[0042] It should be noted that the method of the control console 2 combining the pressure sensor 324 and the gas booster 323 to complete pressurization and continuous detection is relatively common in the existing equipment for testing the sealing performance of electromagnetic flowmeters and is not the main inventive point of the present invention, so it will not be elaborated.

[0043] Refer to Figure 2 、 Figure 3 、 Figure 5 and Figure 6, the vibration mechanism 4 includes mounting posts 41 symmetrically fixed to the inner wall of the mounting cover 3 on the left and right. A fixing ring 411 is commonly installed between the two mounting posts 41. An installation notch 412 is formed on the front side of the fixing ring 411. Limiting posts 413 are symmetrically fixed to the bottom of the fixing ring 411 on the left and right. A moving ring 414 is slidably connected to the two limiting posts 413. An avoidance notch is formed on the front side of the moving ring 414. A pushing member 42 is connected between the fixing ring 411 and the moving ring 414.

[0044] Three sliding members 43 capable of knocking on the electromagnetic flowmeter are evenly arranged circumferentially on the side surface of the moving ring 414. An adjusting member 44 capable of adjusting the knocking angle of the sliding member 43 is connected between the sliding member 43 and the fixing ring 411. Guide members 45 are fixed to the inner side wall of the mounting cover 3 corresponding to the position of each sliding member 43; the pushing member 42 includes a connecting plate 421 fixed to the fixing ring 411. A counterpoint plate 422 corresponding to the connecting plate 421 is fixed to the outer ring surface of the moving ring 414. A cylinder 423 is installed between the connecting plate 421 and the counterpoint plate 422.

[0045] The cooperation of the guide member 45 and the adjusting member 44 realizes the purpose of knocking and vibrating the sliding member 43 at multiple positions and angles, so as to simulate the vibration transmitted from both ends and the vibration generated by its own operation during the actual use of the electromagnetic flowmeter, so that the test content covers the static seal performance test and the dynamic seal performance test, making the test more comprehensive and the test results more specific and practical. And by the way that the sliding members 43 at three positions knock simultaneously to vibrate the electromagnetic flowmeter, not only can space be made for the installation and positioning of the electromagnetic flowmeter, but also the vibration frequency and amplitude of the electromagnetic flowmeter can be increased through multi-point knocking, making the vibration effect better.

[0046] Specifically, after the console 2 cooperates with the pressing component 32 to observe the air pressure change inside the electromagnetic flowmeter and the test pipeline to complete the static seal performance detection, control the cylinder 423 to drive the counterpoint plate 422 and the moving ring 414 to move up and down reciprocally. As the moving ring 414 moves downward, the sliding member 43 on the moving ring 414 will continuously complete angle adjustment under the action of the adjusting member 44, and complete the knocking and vibrating action on the side wall of the electromagnetic flowmeter under the guiding action of the guiding member 45.

[0047] Refer to Figure 5 - Figure 9, the sliding member 43 includes a U-shaped plate 431 slidably connected to the moving ring 414. The two vertical segments of the U-shaped plate 431 are slidably engaged with the moving ring 414. Square plates are symmetrically fixed to the opposite sides of the two vertical segments of the U-shaped plate 431. A return spring is connected between the square plate and the moving ring 414. A rotating rod 432 is rotatably installed between the two vertical segments of the U-shaped plate 431. An auxiliary structure for improving the vibration effect is provided between the rotating rod 432 and the U-shaped plate 431. One end of the rotating rod 432 close to the guiding member 45 is connected to the adjusting member 44.

[0048] The auxiliary structure includes a through groove opened in the rotating rod 432. A sliding rod 433 is slidably connected in the through groove. A tension spring is connected between the sliding rod 433 and the through groove. Avoidance grooves 434 are opened on the sides of the rotating rod 432 parallel to the vertical segments of the U-shaped plate 431. A guiding rod 435 is fixed at the position of the sliding rod 433 corresponding to the avoidance groove 434. Guiding grooves 436 are opened on the two vertical segments of the U-shaped plate 431; the guiding groove 436 is jointly composed of a square segment and inclined segments symmetrically distributed above and below the square segment. By matching the guiding rod 435 with the square segment of the guiding groove 436, the sliding rod 433 and the rotating rod 432 can have higher efficiency when knocking on the electromagnetic flowmeter. A coordination groove is provided in the rotating rod 432. A trigger rod 437 is fixed at the position of the sliding rod 433 corresponding to the coordination groove.

[0049] The adjusting member 44 includes a right-angle connecting rod 441 slidably connected horizontally to the side wall of the fixed ring 411. A telescopic rod 442 is hinged to the vertical segment of the right-angle connecting rod 441. The telescopic end of the telescopic rod 442 is connected to the rotating rod 432.

[0050] The guiding member 45 includes a fixing plate 451 fixed to the sliding member 43. A guiding track rod 452 is fixed to the end of the fixing plate 451 away from the moving ring 414. An installation block 453 is fixed to the inner wall of the installation cover 3 at the position corresponding to the guiding track rod 452. A plurality of guiding plates 454 are rotatably installed vertically and evenly on the installation block 453. A torsion spring is connected between the guiding plate 454 and the installation block 453. A limiting block 455 for limiting the guiding plate 454 is fixed to the side of the installation block 453 and at the bottom of the guiding plate 454. A track groove 456 for accommodating the guiding track rod 452 to pass through is opened on the guiding plate 454.

[0051] The rotation angle of the rotating rod 432 is adjusted through the adjusting member 44, so that the knocking angle of the rotating rod 432 changes, thereby simulating various complex situations of the actual electromagnetic flowmeter receiving vibrations transmitted by the pipelines at both ends and the vibrations generated by the electromagnetic flowmeter itself during operation. And through the auxiliary structure, it can ensure that the rotating rod 432 improves the knocking frequency and knocking force during the targeted knocking on the electromagnetic flowmeter, thereby increasing the vibration frequency and amplitude of the electromagnetic flowmeter, making the test process closer to the vibration situation generated by the electromagnetic flowmeter itself during operation.

[0052] Specifically, when the cylinder 423 is activated on the operation console 2 to push the alignment plate 422 and the moving ring 414 to slide downward along the limit post 413, the moving ring 414 will drive the three sliding members 43 to move downward synchronously. At this time, the right-angle connecting rod 441 will not move up and down due to the limiting effect of the fixed ring 411, while the rotating rod 432 will continue to move downward, causing the position of the telescopic rod 442 and the vertical section of the right-angle connecting rod 441 to change. Thus, it will first contract and drive the rotating rod 432 to rotate to the horizontal position, and then extend, making the end of the rotating rod 432 away from the telescopic rod 442 lower than the height of the telescopic rod 442.

[0053] During the process of the angle deflection of the rotating rod 432 and its downward movement along with the moving ring 414, the guiding track rod 452 will be guided by the guiding plate 454 to drive the U-shaped plate 431 to move away from the electromagnetic flowmeter, and stretch the return spring. When the guiding track rod 452 moves to the position of the track groove 456, the guiding track rod 452 will pass through the track groove 456 and continue to move downward along with the downward movement of the moving ring 414. After the guiding track rod 452 passes through the track groove 456 and separates from the guiding plate 454, the U-shaped plate 431, the guiding track rod 452, the rotating rod 432, and the right-angle connecting rod 441 will quickly move towards the electromagnetic flowmeter due to the elastic force of the two return springs, thereby completing the knocking action on the electromagnetic flowmeter through the sliding rod 433.

[0054] When the rotating rod 432 rotates to the position biased upward and downward, the sliding rod 433 continuously stretches the tension spring due to the guiding action of the two inclined sections of the guiding rod 435 and the guiding groove 436, and makes the sliding rod 433 move synchronously with the U-shaped plate 431 and the rotating rod 432 at this time, without relative movement. When the rotating rod 432 rotates to the horizontal position (i.e., when the guiding rod 435 moves to the square section of the guiding groove 436), at this time, the U-shaped plate 431 is first guided by the guiding member 45 to move away from the electromagnetic flowmeter. At this time, the sliding rod 433 will also move along with the U-shaped plate 431 due to the connection of the tension spring. After the guiding track rod 452 separates from the guiding plate 454, the U-shaped plate 431 will drive the sliding rod 433 to quickly move towards the electromagnetic flowmeter. When the sliding rod 433 contacts the electromagnetic flowmeter, the sliding rod 433 will first knock on the electromagnetic flowmeter, and then the U-shaped plate 431 will have a relative displacement with the sliding rod 433, thereby continuing to drive the rotating rod 432 to move towards the electromagnetic flowmeter. When the mating groove in the mating groove of the rotating rod 432 presses against the trigger rod 437, the rotating rod 432 will cooperate with the sliding rod 433 that continues to contact the electromagnetic flowmeter by knocking the trigger rod 437 to knock on the electromagnetic flowmeter again, thereby increasing the knocking frequency and knocking force, making the amplitude and vibration frequency of the electromagnetic flowmeter higher.

[0055] The working steps of the present invention are as follows: In the first step, first vertically insert the test pipeline into the mounting seat 311 of the mounting component 31. At the same time, limit and guide through the limit folding plate 315, so that the positioning square block at the bottom of the test pipeline is embedded in the positioning square groove 312, and then rotate the test pipeline to complete the fixation to ensure its quick installation.

[0056] In the second step, after the test pipeline is installed, concentrically place the electromagnetic flowmeter to be tested on the test pipeline. After padding the sealing gasket, rotate and align the flanges, and fix the flanges of the test pipeline and the electromagnetic flowmeter with screws.

[0057] In the third step, after the electromagnetic flowmeter and the test pipeline are installed, first adjust the telescopic structure according to the length of the electromagnetic flowmeter, remove the positioning pin, slide the inner embedded rod 326 until the alignment hole is aligned with the positioning hole, reinsert the pin, so that the pressure sensor 324 is aligned with the connection between the electromagnetic flowmeter and the pipeline. Subsequently, start the hydraulic cylinder 321 through the console 2 to drive the closing plate 322 to press against the top of the electromagnetic flowmeter, and the gas booster 323 pressurizes and stabilizes the inside of the electromagnetic flowmeter and the test pipeline, and the pressure sensor 324 monitors the air pressure change in real time to evaluate the static sealing performance.

[0058] In the fourth step, after the static sealing performance test is completed, start the cylinder 423 through the console 2 to drive the moving ring 414 to move up and down. Under the action of the sliding member 43, the adjusting member 44 and the guiding member 45, the side wall of the electromagnetic flowmeter is knocked at multiple angles. The guiding track rod 452 moves along the track groove 456, driving the rotating rod 432 to knock periodically. Combining the tension spring and the return spring to enhance the impact force, simulating the actual vibration environment, and at the same time continuously monitoring the air pressure change inside the electromagnetic flowmeter and the test pipeline to comprehensively evaluate the dynamic sealing performance.

[0059] Step 5: Evaluate the sealing performance of the electromagnetic flowmeter based on the air pressure changes inside the electromagnetic flowmeter and the test pipeline. If the air pressure at the connection between the electromagnetic flowmeter and the test pipeline continues to decrease and exceeds the allowable error range after the pressure stabilization, it indicates that the static sealing performance of the electromagnetic flowmeter is poor. In this case, there is no need to measure the dynamic sealing performance. If the air pressure at the connection between the electromagnetic flowmeter and the test pipeline decreases within the allowable error range or does not decrease after the pressure stabilization, it indicates that the static sealing performance of the electromagnetic flowmeter meets the requirements. Subsequently, a dynamic sealing performance test is conducted. During the dynamic sealing performance test, if the air pressure at the connection between the electromagnetic flowmeter and the test pipeline continues to decrease and exceeds the allowable error range, and there is an obvious trough, it indicates that the dynamic sealing performance of the electromagnetic flowmeter is poor, that is, the sealing performance of the electromagnetic flowmeter to be tested does not meet the requirements. If the air pressure at the connection between the flowmeter and the test pipeline decreases within the allowable error range or does not decrease, and there is no obvious trough, it indicates that the dynamic sealing performance of the electromagnetic flowmeter meets the requirements, that is, the sealing performance of the electromagnetic flowmeter to be tested meets the requirements.

[0060] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present invention, and still be covered by the protection scope of the present invention.

Claims

1. An electromagnetic flowmeter sealing performance test device, comprising a base, a mounting cover and a control console are arranged on the top of the base from left to right, characterized in that: The front side of the installation cover is provided with a front opening and the bottom thereof is provided with an installation assembly for installing a test pipe, the top of the installation cover is provided with a pressing assembly, and the side wall of the installation cover is provided with a vibration mechanism for testing the dynamic sealing performance of the electromagnetic flowmeter; The mounting assembly cooperates with the pressing assembly to combine and seal the electromagnetic flowmeter and the test pipe; the vibration mechanism includes mounting columns symmetrically fixed to the inner wall of the mounting cover, a fixing ring is installed between the two mounting columns, a mounting notch is opened on the front side of the fixing ring, and a limiting column is fixed symmetrically on the bottom of the fixing ring, a moving ring is slidably connected to the two limiting columns, an avoidance notch is opened on the front side of the moving ring, and a pushing member is connected between the fixing ring and the moving ring; Three sliding components capable of knocking the electromagnetic flowmeter are evenly arranged on the circumference of the side of the moving ring. An adjusting component capable of adjusting the knocking angle of the sliding component is connected between the sliding component and the fixed ring. A guide component is fixed on the inner wall of the mounting cover corresponding to the position of each sliding component. The purpose of knocking and vibrating the sliding component at multiple positions and angles is achieved by cooperating with the guiding component and the adjusting component.

2. The electromagnetic flowmeter sealing performance testing device according to claim 1, characterized in that: The mounting assembly includes a mounting seat fixed on the top of the mounting cover, a positioning square groove is opened in the mounting seat, a horizontal guide column is symmetrically connected to the side wall of the mounting seat for horizontal sliding, a mounting circular plate is fixed to one end of the horizontal guide column located outside the mounting seat, a compression spring is connected between the mounting circular plate and the mounting seat, and a limiting folding plate is fixed to one end of the horizontal guide column located inside the mounting seat.

3. The electromagnetic flowmeter sealing performance testing device according to claim 1, characterized in that: The pressing assembly comprises a hydraulic cylinder fixed on the top of the mounting cover, a closing plate is fixed to the pushing end of the hydraulic cylinder, a gas booster is installed at the bottom of the closing plate, and a pressure sensor is installed at the bottom of the gas booster through a telescopic structure.

4. The electromagnetic flowmeter sealing performance testing device according to claim 3, characterized in that: The telescopic structure includes a limit sleeve fixed at the bottom of the gas booster, an embedded rod is vertically slidably connected in the limit sleeve, a plurality of positioning holes are vertically and evenly opened on the limit sleeve, a positioning hole is opened on the embedded rod, and a positioning pin is commonly connected between the positioning hole and the positioning hole at the corresponding position.

5. The electromagnetic flowmeter sealing performance testing device according to claim 1, characterized in that: The pushing member comprises a connecting plate fixed on the fixing ring, an aligning plate corresponding to the connecting plate is fixed on the outer ring surface of the moving ring, and a cylinder is installed between the connecting plate and the aligning plate.

6. The electromagnetic flowmeter sealing performance testing device according to claim 1, characterized in that: The sliding component includes a U-shaped plate slidably connected to the moving ring, two vertical sections of the U-shaped plate are slidably matched with the moving ring, square plates are symmetrically fixed on the back sides of the two vertical sections of the U-shaped plate, a return spring is connected between the square plate and the moving ring, a rotating rod is rotatably installed between the two vertical sections of the U-shaped plate, an auxiliary structure for improving the vibration effect is arranged between the rotating rod and the U-shaped plate, and one end of the rotating rod close to the guide member is connected to the adjusting member.

7. The electromagnetic flowmeter sealing performance testing device according to claim 6, characterized in that: The auxiliary structure includes a through slot opened in the rotating rod, a sliding rod is slidably connected in the through slot, a tension spring is connected between the sliding rod and the through slot, avoidance slots are opened on the sides of the rotating rod parallel to the vertical section of the U-shaped plate, a guide rod is fixed to the position of the sliding rod corresponding to the avoidance slot, and guide slots are opened on both vertical sections of the U-shaped plate.

8. The electromagnetic flowmeter sealing performance testing device according to claim 7, characterized in that: The guide groove is composed of a square segment and inclined segments symmetrically distributed above and below the square segment. The guide rod cooperates with the square segment of the guide groove to make the sliding rod and the rotating rod more efficient in knocking the electromagnetic flowmeter. A coordination groove is provided in the rotating rod, and a trigger rod is fixed at the position of the sliding rod corresponding to the coordination groove.

9. The electromagnetic flowmeter sealing performance testing device according to claim 1, characterized in that: The adjusting component comprises a right-angle connecting rod horizontally slidably connected to the side wall of the fixing ring, a telescopic rod is hingedly connected to the vertical section of the right-angle connecting rod, and the telescopic end of the telescopic rod is connected to the sliding component.

10. The electromagnetic flowmeter sealing performance testing device according to claim 1, characterized in that: The guide component includes a fixed plate fixed on the sliding component, a guide track rod is fixed on one end of the fixed plate away from the moving ring, a mounting block is fixed on the inner wall of the mounting cover and corresponding to the position of the guide track rod, a plurality of guide plates are mounted on the mounting block for vertical and uniform rotation, a torsion spring is connected between the guide plate and the mounting block, a limit block for limiting the guide plate is fixed on the side of the mounting block and located at the bottom of the guide plate, and a track groove for accommodating the guide track rod to pass through is opened on the guide plate.

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