CN116519101B - Automatic detection, calibration and correction system for wide-range liquid level meter - Google Patents
Automatic detection, calibration and correction system for wide-range liquid level meter Download PDFInfo
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- CN116519101B CN116519101B CN202310039096.1A CN202310039096A CN116519101B CN 116519101 B CN116519101 B CN 116519101B CN 202310039096 A CN202310039096 A CN 202310039096A CN 116519101 B CN116519101 B CN 116519101B
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- 238000006073 displacement reaction Methods 0.000 abstract description 8
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F25/00—Testing or calibration of apparatus for measuring volume, volume flow or liquid level or for metering by volume
- G01F25/20—Testing or calibration of apparatus for measuring volume, volume flow or liquid level or for metering by volume of apparatus for measuring liquid level
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
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Abstract
The invention discloses an automatic detection, calibration and correction system of a wide-range liquid level meter, which belongs to the field of liquid level meter calibration equipment and solves the technical problems that the detection and calibration precision is low and automatic correction cannot be realized in the prior art; the system also comprises an upper computer and a detection control module; the simulation of the floating ball of the detected liquid level meter along with the movement of the liquid level is realized through the movement driving mechanism, the accurate displacement distance of the floating ball is collected through the detector, the movement distance of the floating ball output by the detected liquid level meter is collected and recorded in real time through the upper computer, and the upper computer can calculate the correction value according to the movement distance of the installation sliding block of the detector and the movement distance of the floating ball output by the detected liquid level meter and write the correction value into the detected liquid level meter. Automatic calibration and high-precision correction of the wide-range liquid level meter are realized.
Description
Technical Field
The invention relates to the field of liquid level meter measurement and calibration, in particular to an automatic detection, calibration and correction system for a wide-range liquid level meter.
Background
The precision of liquid level measurement affects aspects of petrochemical industry, not only affects the quality of final finished products, but also is safe and environment-friendly. The precision inaccuracy can influence the production process ratio, influences the quality of finished products, can also make the unable accurate judgement storage tank liquid level how much simultaneously, the condition that takes place storage tank, reactor roof or dry pot very easily damages equipment, and the serious explosion accident that takes place simultaneously is toxic, harmful substance roof can pollute the environment too, so the calibration detection of level gauge appears vital.
The wide-range liquid level meter comprises a cable type magnetostriction liquid level meter, a cable type floating ball liquid level meter, a radar liquid level meter, an ultrasonic liquid level meter and the like, particularly the cable type magnetostriction liquid level meter is used as a high-precision continuous liquid level measurement product, compared with a non-contact type radar or ultrasonic liquid level meter, the anti-interference capability and the measurement reliability of the cable type magnetostriction liquid level meter are far superior to those of the cable type magnetostriction liquid level meter, but the research on a calibration detection system of the wide-range liquid level meter is far less in China, and the measurement accuracy of the wide-range liquid level meter is far poor in comparison of a communicating vessel scale, and the measurement accuracy of the wide-range liquid level meter is far less in comparison of the communicating vessel scale. Due to the scientificalness of the domestic detection and calibration method, the detection and calibration error is increased, so that the reliability and the application range of the domestic wide-range cable-type magnetostrictive liquid level meter are greatly reduced, and the wide-range cable-type magnetostrictive liquid level meter under the current many high-precision linkage liquid level control working conditions mainly depends on foreign import. Therefore, under the current environment, the research of the large-range intelligent calibration detection system of the high-precision liquid level meter is very important, the large-range liquid level meter is related to the large-range domestic liquid level meter to largely ban imported similar products, and meanwhile, the safety and reliability of liquid level measurement can be improved.
The traditional liquid level meter calibration detection device and method have a plurality of defects, and are specifically expressed in:
1. in the prior art, the liquid level meter calibration and detection device and method mostly adopt the principle of a communicating vessel and carry out measurement verification and calibration through a scale comparison method, the measurement error is usually larger, the measurement range of the measuring method of the communicating vessel is generally smaller, and if the communicating vessel is also vertically installed, the large-range liquid level meter calibration is likely to cause inconvenient detection and too high cost. In the conventional liquid level meter compared with the traditional liquid level meter in the Chinese patent CN113819982A, the defect that the minimum scale of the conventional steel ruler is 1mm is pointed out, so that the measurement accuracy is not too high, the more densely the scale marks of the ruler are distributed, the higher the measurement accuracy is, but the actual scale marks are not too dense, on one hand, too dense scale marks are not easy to process, and meanwhile, the naked eyes of people are not easy to distinguish, and the short-distance number scale marks are also needed. Another disadvantage is that for different liquid level heights, the observation orientation is not completely looking up, especially when the liquid level is low, the top view is easy, and when the liquid level is high, the liquid level value read in this way is inaccurate. The device is greatly improved on the basis of the traditional liquid level meter calibration device, a servo motor is adopted to drive and collect high-precision grating scale displacement signals as true signals, measurement precision and intelligent degree are greatly improved, but the device is only limited to rod type liquid level meter verification of below 4 to 5 meters, and the technical scheme of the device can only calibrate and detect the liquid level in a small range and cannot cover the large-range because of the current grating scale and servo motor technology and cost.
2. The large-range calibration detection device in the prior art mostly adopts a communicating vessel principle, adopts a vertical installation mode, has individual technology to increase certain intelligent design on the basis of a traditional calibration device, such as a Chinese patent CN213180246U, on the basis of a traditional communicating vessel scale measurement comparison method, a set of center distance of a detected liquid level meter is designed in a mode that an adjustable motor is matched with a screw nut, the flexible adjustment of the center distance of a connecting flange facilitates the installation of the liquid level meter, the pressurizing motor is further used for controlling the movement of a connecting piston block to realize the liquid evacuation after the detection, the angle of installation and disassembly is greatly improved compared with that of the traditional liquid level meter, but the acquisition mode of the liquid level meter is also a traditional scale comparison method, only a certain optimization is performed on the installation mode and the operation process, the intelligent liquid level signal processing and the calibration error are relatively large, the technology does not describe the range of the range which can be detected, the measuring range is more than ten meters from the prior patent technology, the flexible adjustment of the center distance of the connecting flange facilitates the installation of the liquid level meter, the liquid level meter is not convenient to observe the liquid level meter in the installation space, the measurement range is not convenient to observe the error in the high degree of the liquid level meter, and the error is not convenient to observe the liquid level in the high degree of the measurement range, and the error is easy to observe by naked eyes.
3. The prior art large-range calibration detection device mostly only focuses on calibration detection devices, the problems of detection control, liquid level error correction after detection and the like are not considered, the measurement range of the design device is relatively fixed, the measurement precision is low, automatic calibration, generation of a history curve and automatic control of calibration processes cannot be realized, for example, the traditional large-range liquid level meter calibration is greatly improved as shown in Chinese patent CN204043760U, but the following problems are also existed, which are urgently needed to be optimally solved. Firstly, this technique is in order to realize the height adjustment of liquid level gauge in vertical direction, place the liquid level gauge with on the vertical guide rail in the both ends of demarcation support, but unable removal in the horizontal direction is realized to the height position, the detection range of liquid level gauge just receives the influence of liquid level gauge with the part, the length can only with the liquid level gauge with both ends with the liquid level gauge with the part middle distance in the same place can measure, otherwise can't accomplish the liquid level gauge both ends and tighten, too short can only press from both sides one end, the detection zone is outside will be placed in to one of them one end detection length region of overlength liquid level gauge, serious restriction detection range. Secondly, the technology is a plurality of liquid level meter supporting pieces which are arranged for preventing the liquid level meter to be detected from being excessively bent to influence the detection precision, the device really achieves the purpose of preventing the liquid level meter to be detected from being bent because the supporting positions are uniformly distributed in a static state, but as the technology is adopted, the liquid level meter supporting piece 5 is a V-shaped supporting frame, a supporting power device 4 connected with the liquid level meter supporting piece 5 is also arranged, and if the liquid level meter driving part 2 passes through the liquid level meter supporting piece 5, the supporting power device 4 drives the liquid level meter supporting piece 5 to move downwards in the vertical direction. In the normal measurement condition, in order to prevent the support from blocking the movement of the driving component, when the liquid level meter driving component reaches the designated position of the support, the support moves downwards, so that the sudden downwards movement of the support at the position tends to cause the bending of the measurement point in the measurement process, and the liquid level meter driving component just measures the position signal of the point, so that the technical scheme does not achieve the aim of preventing the liquid level meter to be measured from excessively bending from the design point of view. Thirdly, the detection component of the technology adopts the photoelectric sensor, the photoelectric sensor is not high in measurement precision as a detection standard signal, the quality of the installation horizontal position of the photoelectric sensor and the position of the reflecting platform plate can influence the measurement precision of the photoelectric sensor because the calibration device of the wide-range liquid level meter is relatively long, meanwhile, the technology adopts the driving motor, the additional error can be increased because the photoelectric sensor receives the interference of the working of the driving motor, and in the calibration process, the photoelectric sensor and the reflecting platform plate cannot be provided with any shielding object, so that the detection precision is reduced. And fourthly, according to the technology, a liquid level meter driving part drives the liquid level change of the liquid level meter to be measured, the liquid level meter to be measured displays the liquid level data, and meanwhile, a liquid level detecting part senses the position of the liquid level meter driving part to obtain the liquid level data, and the liquid level data obtained in two times are compared. The technology determines the measurement precision of the detected liquid level meter by comparing the display data of the liquid level meter with the liquid level change signal detected by the photoelectric sensor of the liquid level detection component, only errors can be detected by comparison, and error correction cannot be realized, meanwhile, the comparison method can only observe the liquid level errors of limited points, and can not realize the liquid level error display and the historical curve data of the whole range section.
Disclosure of Invention
The invention aims to solve the technical problems that the detection and calibration accuracy of a wide-range liquid level meter is low, the automatic calibration cannot be realized, and the operation is complex and inconvenient in the prior art.
In order to solve the technical problems, the technical scheme of the invention is as follows: the automatic detection, calibration and correction system for the wide-range liquid level meter comprises a frame, wherein a first guide rail and a second guide rail which are parallel to each other are arranged on the frame, a floating ball fixing sliding block is movably arranged on the first guide rail, a floating ball fixing mechanism is arranged on the floating ball fixing sliding block, a detector mounting sliding block is movably arranged on the second guide rail, the detector mounting sliding block is used for mounting a detector, a connecting plate is fixedly arranged between the detector mounting sliding block and the floating ball fixing sliding block, and a liquid level meter fixing mechanism and a moving driving mechanism for driving the connecting plate to move are further arranged on the frame; the detecting instrument comprises a detecting instrument mounting sliding block, a detecting instrument, a detecting control module and an upper computer, wherein the detecting instrument is used for sending the moving distance of the detecting instrument mounting sliding block to the upper computer through the detecting control module, the upper computer is used for collecting the moving distance of a floating ball output by the detected liquid level meter, calculating a correction value according to the moving distance of the detecting instrument mounting sliding block and the moving distance of the floating ball output by the detected liquid level meter, and writing the correction value into the detected liquid level meter.
As the preferable technical scheme, a third guide rail parallel to the first guide rail and the second guide rail is further arranged on the frame, the third guide rail is positioned between the first guide rail and the second guide rail, a driving slide block is movably mounted on the third guide rail, the connecting plate is fixedly mounted on the driving slide block, and the movable driving mechanism is arranged between the driving slide block and the third guide rail.
As the preferable technical scheme, the floating ball fixing mechanism comprises a telescopic rod fixedly arranged on the floating ball fixing sliding block, a supporting column is fixedly arranged at the upper end of the telescopic rod, and a floating ball clamping piece is fixedly arranged on the supporting column.
As the preferable technical scheme, the liquid level meter fixing mechanism comprises at least two liquid level meter installation sliding blocks movably installed on the first guide rail, a position locking mechanism is arranged between the liquid level meter installation sliding blocks and the first guide rail, and a liquid level meter clamping piece is arranged on the liquid level meter installation sliding blocks.
As the preferable technical scheme, be equipped with universal supporting mechanism between the level gauge installation slider with the level gauge joint spare, universal supporting mechanism is including establishing the spherical recess on the supporting shoe, movable mounting has the universal ball in the spherical recess, universal supporting mechanism is still including downwardly compressing tightly the limiting plate of universal ball, be equipped with on the limiting plate and supply the through-hole that the upper portion of universal ball was exposed, the limiting plate with be equipped with down fixing bolt between the supporting shoe, the upper portion fixed mounting of universal ball has the support column, fixed mounting has the level gauge joint spare on the support column, the supporting shoe with be equipped with installation mechanism between the level gauge installation slider.
As the preferable technical scheme, install the swing board on the drive slider rotation, the swing board is two, two the swing board is located respectively the both sides of floater, the axis of rotation perpendicular to of swing board drive slider's upper surface, fixed mounting has flexible bracing piece on the swing board, flexible bracing piece upper end fixed mounting has the support column, fixed mounting has the removal joint spare on the support column.
As the preferable technical scheme, remove joint spare the level gauge joint spare with floater joint spare all includes fixed mounting the joint seat on the support column, articulated on the joint seat have arc joint board or be equipped with elastic connection spare between joint seat and the arc joint board, the arc joint board with be equipped with chucking connecting piece between the joint seat, the joint seat with the internal surface of arc joint board all is equipped with rubber cushion.
As the preferable technical scheme, movable sliding blocks positioned on two sides of the floating ball fixed sliding block are movably arranged on the first guide rail, and a detachable fixed mounting mechanism is arranged between the movable sliding block and the swinging plate.
As the preferable technical scheme, still movable mounting has and is located preceding spacing slider and the back spacing slider of detector installation slider both sides on the second guide rail, preceding spacing slider back spacing slider with be equipped with slider position locking mechanical system between the second guide rail, preceding spacing slider with install proximity switch on the back spacing slider respectively, fixed mounting has spacing signal reflecting plate on the detector installation slider.
As the preferable technical scheme, be equipped with the recess on the rubber cushion of removal joint spare respectively, movable mounting has the rubber ball seat in the recess, rotate on the rubber ball seat and install the rubber ball, the rubber ball seat with be equipped with supporting spring between the bottom of recess.
Due to the adoption of the technical scheme, the automatic detection, calibration and correction system for the wide-range liquid level meter comprises a rack, wherein a first guide rail and a second guide rail which are parallel to each other are arranged on the rack, a floating ball fixing sliding block is movably arranged on the first guide rail, a floating ball fixing mechanism is arranged on the floating ball fixing sliding block, a detector mounting sliding block is movably arranged on the second guide rail, the detector mounting sliding block is used for mounting a detector, a connecting plate is fixedly arranged between the detector mounting sliding block and the floating ball fixing sliding block, and a liquid level meter fixing mechanism and a moving driving mechanism for driving the connecting plate to move are further arranged on the rack; the upper computer is used for calculating a correction value according to the moving distance of the installation sliding block of the detector and the moving distance of the floating ball output by the liquid level meter to be detected, and writing the correction value into the liquid level meter to be detected; the simulation of the floating ball of the detected liquid level meter along with the movement of the liquid level is realized through the movement driving mechanism, the accurate displacement distance of the floating ball is collected through the detector, the movement distance of the floating ball output by the detected liquid level meter is collected and recorded in real time through the upper computer, and the upper computer can calculate the correction value according to the movement distance of the installation sliding block of the detector and the movement distance of the floating ball output by the detected liquid level meter and write the correction value into the detected liquid level meter. Automatic calibration and high-precision correction of the wide-range liquid level meter are realized.
Drawings
FIG. 1 is a schematic diagram of an embodiment of the present invention;
FIG. 2 is an enlarged view of a portion of FIG. 1 at I;
FIG. 3 is a schematic view of a floating ball joint according to an embodiment of the present invention;
FIG. 4 is a schematic view of the opening position of the spherical recess according to the embodiment of the present invention;
FIG. 5 is a schematic view showing an installation state of a rubber ball in the embodiment of the present invention;
FIG. 6 is a schematic view of the installation position of the magnetic grating ruler in the embodiment of the invention;
fig. 7 is a partial enlarged view at II in fig. 1.
In the figure: 1. a frame; 2. a first guide rail; 3. a second guide rail; 4. the floating ball fixes the sliding block; 5. the detector is provided with a sliding block; 6. a connecting plate; 7. an upper computer; 8. a liquid level meter to be detected; 9. a floating ball; 10. a third guide rail; 11. driving a sliding block; 12. a telescopic rod; 13. a support column; 14. the liquid level meter is provided with a sliding block; 15. a spherical groove; 16. a universal ball; 17. a limiting plate; 18. a through hole; 19. pressing down the fixing bolt; 20. a swinging plate; 21. a telescopic support rod; 22. a clamping seat; 23. an arc-shaped clamping plate; 24. a rubber cushion block; 25. moving the slide block; 26. a front limit slide block; 27. a rear limit slide block; 28. a proximity switch; 29. a limit signal reflecting plate; 30. a groove; 31. a rubber ball seat; 32. rubber balls; 33. a support spring; 34. an elastic connection member; 35. a detector; 36. clamping the connecting piece; 37. a support block; 38. a rubber suction cup; 39. a magnetic grating ruler; 40. a magnetic grid detection display; 41. a magnetic grating ruler protecting cover; 42. a gauge body of the liquid level gauge to be detected; 43. moving the clamping piece; 44. the liquid level meter clamping piece; 45. a floating ball clamping piece; 46. and a detection control module.
Detailed Description
As shown in fig. 1 and fig. 2, the automatic detection calibration correction system for the wide-range liquid level meter comprises a frame 1, wherein a first guide rail 2 and a second guide rail 3 which are parallel to each other are arranged on the frame 1, a floating ball fixing sliding block 4 is movably arranged on the first guide rail 2, a floating ball fixing mechanism is arranged on the floating ball fixing sliding block 4, a detector mounting sliding block 5 is movably arranged on the second guide rail 3, the detector mounting sliding block 5 is used for mounting a detector 35, a connecting plate 6 is fixedly arranged between the detector mounting sliding block 5 and the floating ball fixing sliding block 4, and the frame 1 is also provided with a liquid level meter fixing mechanism and a moving driving mechanism for driving the connecting plate 6 to move; the detector 35 sends the moving distance of the detector mounting sliding block 5 to the upper computer 7 through the detection control module 46, the upper computer 7 collects the moving distance of the floating ball output by the detected liquid level meter 8, and the upper computer 7 calculates a correction value according to the moving distance of the detector mounting sliding block 5 and the moving distance of the floating ball 9 output by the detected liquid level meter 8 and writes the correction value into the detected liquid level meter 8. Along with the movement of the detector mounting slider 5, the detector 35 can accurately measure the movement distance of the detector mounting slider 5, thereby detecting the accurate movement distance of the floating ball 9. The simulation of the movement of the floating ball 9 of the detected liquid level meter 8 along with the liquid level is realized through the movement driving mechanism, the accurate displacement distance of the floating ball is collected through the detector 35, the movement distance of the floating ball output by the detected liquid level meter 8 is collected and recorded in real time through the upper computer 7, the upper computer 7 can calculate a correction value according to the movement distance of the installation sliding block 5 of the detector and the movement distance of the floating ball 9 output by the detected liquid level meter 8, and the correction value is written into the detected liquid level meter 8. Automatic calibration and high-precision correction of the wide-range liquid level meter are realized. And the automation and correction precision of the calibration of the wide-range liquid level meter are effectively improved. The mobile driving mechanism is electrically connected with the detection control module 46, the upper computer 7 controls the movement of the connecting plate 6 through the detection control module 46, the mobile driving mechanism can be regulated through the upper computer, and the speed and the moving distance of the connecting plate 6 can be operated and modified on the upper computer 7. The detector 35 comprises a magnetic grating ruler 39, a magnetic grating detection display 40 and a magnetic grating ruler signal detector, wherein the magnetic grating ruler 39 is adhered to the side wall of the second guide rail 3 through 3M double faced adhesive tape, as shown in fig. 6, a magnetic grating ruler protection cover 41 is stuck to the outer surface of the magnetic grating ruler 39, and the magnetic grating ruler protection cover 41 prevents the magnetic grating ruler 39 from being damaged. When the moving driving mechanism drives the connecting plate 6, the detector mounting slide block 5 also synchronously moves, and the magnetic grating ruler signal detector feeds back the detected displacement signal to the upper computer 7 through the detection control module 46 for automatic acquisition, recording and calculation, and displays the moving displacement condition on the magnetic grating detection display 40. Preferably, the detected liquid level meter 8 is connected with the upper computer 7 through the HART modem, so that the upper computer 7 can collect the moving distance of the floating ball output by the detected liquid level meter 8, and the upper computer 7 can write the correction value into the detected liquid level meter 8.
As shown in fig. 1 and 2, a third guide rail 10 parallel to the first guide rail 2 and the second guide rail 3 is further arranged on the frame, the third guide rail 10 is located between the first guide rail 2 and the second guide rail 3, a driving slide block 11 is movably installed on the third guide rail 10, the connecting plate 6 is fixedly installed on the driving slide block 11, and the moving driving mechanism is arranged between the driving slide block 11 and the third guide rail 10. The connecting plate 6 is fixedly arranged on the driving sliding block 11, and the connecting plate 6 can be driven to move through the movement of the driving sliding block 11, so that the detector mounting sliding block 5 and the floating ball fixing sliding block 4 are driven to synchronously move, and the detector 35 can accurately measure the moving distance of the floating ball 9. The movable driving mechanism comprises a driving motor, a driving gear is arranged on an output shaft of the driving motor, a rack parallel to the third guide rail 10 is arranged on the third guide rail 10 of the frame 1, the rack is matched with the driving gear, and the driving slider 11 is driven to move through rotation of the driving gear of the driving motor.
As shown in fig. 2, the floating ball fixing mechanism comprises a telescopic rod 12 fixedly mounted on the floating ball fixing sliding block 4, a supporting column 13 is fixedly mounted at the upper end of the telescopic rod 12, and a floating ball clamping piece 45 is fixedly mounted on the supporting column 13. The telescopic rod comprises a sleeve and a movable column, the sleeve is fixedly arranged on the floating ball fixing sliding block 4, the movable column is in threaded fit with the sleeve, the support column 13 is fixedly arranged at the upper end of the movable column, and the height of the telescopic rod can be adjusted by rotating the movable column.
As shown in fig. 1, 2, 3 and 4, the fixing mechanism of the liquid level meter comprises at least two liquid level meter mounting sliding blocks 14 movably mounted on the first guide rail 2, a position locking mechanism is arranged between the liquid level meter mounting sliding blocks 14 and the first guide rail 2, the position locking mechanism comprises a jacking bolt mounted on the liquid level meter mounting sliding blocks 14, the jacking bolt is jacked on the side surface of the first guide rail 2, and a liquid level meter clamping piece 44 is arranged on the liquid level meter mounting sliding blocks 14.
The universal support mechanism is arranged between the liquid level meter mounting slide block 14 and the liquid level meter clamping piece 44, and comprises a spherical groove 15 arranged on a support block 37, a universal ball 16 is movably mounted in the spherical groove 15, the universal support mechanism further comprises a limiting plate 17 which is used for downwards pressing the universal ball 16, a through hole 18 for exposing the upper portion of the universal ball 16 is formed in the limiting plate 17, a pressing fixing bolt 19 is arranged between the limiting plate 17 and the support block 37, a support column 13 is fixedly mounted on the upper portion of the universal ball 16, a liquid level meter clamping piece 44 is fixedly mounted on the support column 13, and a mounting mechanism is arranged between the support block 37 and the liquid level meter mounting slide block 14. The cooperation of the spherical groove 15 and the universal ball 16 enables the angle of the liquid level meter clamping piece 44 to be conveniently adjusted, and the liquid level meter 8 to be conveniently installed and fixed. The mounting mechanism comprises a rubber sucker 38 fixedly mounted on the lower surface of the supporting block 37, and the rubber sucker 38 is adsorbed on the liquid level meter mounting sliding block 14. The provision of the rubber suction cup facilitates adjustment of the position of the gauge clamp 44 relative to the gauge mounting slide 14.
As shown in fig. 1 and fig. 2, the driving slide 11 is rotatably provided with two swinging plates 20, the two swinging plates 20 are respectively located at two sides of the floating ball 9, the rotation axis of the swinging plate 20 is perpendicular to the upper surface of the driving slide 11, the swinging plate 20 is fixedly provided with a telescopic supporting rod 21, the upper end of the telescopic supporting rod 21 is fixedly provided with a supporting column 13, and the supporting column 13 is fixedly provided with a movable clamping piece 43. The telescopic supporting rod also comprises a sleeve and a movable column, the sleeve is fixedly arranged on the swinging plate 20, the movable column is in threaded fit with the sleeve, and the upper end of the movable column is fixedly provided with the supporting column 13. The height of the telescopic support bar 21 can be adjusted by rotating the movable column.
As shown in fig. 1, the first guide rail 2 is movably provided with a moving slide block 25 positioned at two sides of the floating ball fixed slide block 4, and a detachable fixed mounting mechanism is arranged between the moving slide block 25 and the swinging plate 20. The movable slider 25 is arranged to enable the movable clamping piece 43 to move more stably along with the driving slider 11, and the detected liquid level meter body 42 can be supported more effectively. The detachable fixed mounting mechanism may employ a connecting bolt that fixes the swing plate 20 to the movable slider 25.
The movable clamping piece 43 can effectively slow down the bending sagging of the detected liquid level meter body 42, prevent the measurement error caused by bending, the telescopic supporting rod 21 can also adjust the supporting height, and the movable clamping piece 43 and the floating ball fixing mechanism are fixedly connected with the driving sliding block 11, can synchronously move, and effectively avoid the bending sagging of the detected liquid level meter body 42 caused by the change of the supporting distance. The swinging plate 20 can rotate relative to the driving sliding block, so that the number of the movable clamping pieces 43 for supporting the detected liquid level meter 8 can be changed, when the detected liquid level meter 8 is not required to be supported, the swinging plate 20 can be swung to be parallel to the first guide rail 2, the moving range of the floating ball 9 can be enlarged, and the movable clamping pieces are suitable for detecting and calibrating the liquid level meter with smaller measuring range.
As shown in fig. 5, the movable clamping member 43, the liquid level meter clamping member 44 and the floating ball clamping member 45 each comprise a clamping seat 22 fixedly mounted on the supporting column 13, an arc-shaped clamping plate 23 is hinged on the clamping seat 22 or an elastic connecting member 34 is arranged between the clamping seat 22 and the arc-shaped clamping plate 23, a clamping connecting member 36 is arranged between the arc-shaped clamping plate 23 and the clamping seat 22, and rubber cushion blocks 24 are arranged on the inner surfaces of the clamping seat 22 and the arc-shaped clamping plate 23. The clamping connector 36 may be a bolt, etc., and the bolt is connected between the clamping seat 22 and the arc-shaped clamping plate 23.
As shown in fig. 1 and 7, the second guide rail 3 is further movably provided with a front limit slide block 26 and a rear limit slide block 27 which are positioned at two sides of the detector mounting slide block 5, a slide block position locking mechanism is arranged between the front limit slide block 26 and the rear limit slide block 27 and the second guide rail 3, the slide block position locking mechanism comprises a locking fixing bolt arranged on the front limit slide block 26 and the rear limit slide block 27, the inner end of the locking fixing bolt is tightly propped against the second guide rail 3, the front limit slide block 26 and the rear limit slide block 27 are respectively provided with a proximity switch 28, and the detector mounting slide block 5 is fixedly provided with a limit signal reflecting plate 29. The moving distance of the driving slide block 11 can be automatically controlled through the proximity switch 28 and the limit signal reflecting plate 29 fixedly arranged on the detector mounting slide block 5, so that the automation of detection is improved.
When the moving driving mechanism drives the connecting plate 6 through driving the detector mounting slide block 5, the magnetic grating ruler signal detector feeds back the detected displacement signal to the upper computer 7 through the detection control module 46 for automatic acquisition, recording and calculation, and the moving displacement condition is displayed on the magnetic grating detection display 40. Preferably, the detected liquid level meter 8 is connected with the upper computer 7 through the HART modem, so that the upper computer 7 can collect the moving distance of the floating ball output by the detected liquid level meter 8, and the upper computer 7 can write the correction value into the detected liquid level meter 8.
As shown in fig. 1 and fig. 2, the driving motor automatically controls the moving speed and the start-stop position of the detector mounting slide block 5 through a limit signal reflecting plate 29 on the detector mounting slide block 5, an upper computer 7 and a detection control module 46, wherein the speed of the driving motor can be written in a display interface of the upper computer 7 to control the uniform motion of the detector mounting slide block 5, the speed can be adjusted, and the automatic start-stop control is realized through the fact that a proximity switch 28 is respectively mounted on a front limit slide block 26 and a rear limit slide block 27, and the limit signal reflecting plate 29 is fixedly mounted on the detector mounting slide block 5.
As shown in fig. 5, the rubber cushion blocks 24 of the movable clamping piece 43 are respectively provided with a groove 30, a rubber ball seat 31 is movably installed in the grooves 30, a rubber ball 32 is rotatably installed on the rubber ball seat 31, and a supporting spring 33 is arranged between the rubber ball seat 31 and the bottom of the grooves 30. The supporting spring 33 enables the rubber ball seat 31 to float for a certain degree relative to the groove 30, and the rubber ball 32 can rotate relative to the rubber ball seat 31, so that the movable clamping piece 43 can move more smoothly relative to the detected liquid level meter body 42 while clamping the detected liquid level meter body 42, and the movable clamping piece 43 can effectively prevent the detected liquid level meter body 42 from bending and sagging.
When the upper computer 7 sends a liquid level change simulation instruction to the detection control module 46, the mobile driving mechanism controls the driving sliding block 11 to drive the magnetic grating ruler signal detector, the floating ball fixing sliding block 4 and the mobile clamping piece 43 to synchronously move through the connecting plate 6, when the position of the proximity switch 28 is reached, the proximity switch 28 feeds back to the detection control module 46 to control the stop of the driving motor, in the process that the floating ball 9 of the detected liquid level meter 8 moves at a uniform speed along with the floating ball clamping piece 45 arranged on the floating ball fixing sliding block 4, the detection control module 46 can acquire the moving distance of the detector mounting sliding block 5 in real time so as to accurately simulate the actual change value of the liquid level, the upper computer 7 calculates a correction value according to the moving distance of the detector mounting sliding block 5 and the moving distance of the floating ball 9 output by the detected liquid level meter 8, and the upper computer 7 can acquire a plurality of groups of moving distances of the floating balls 9 output by the corresponding detected liquid level meters 8, and calculate the correction value through the existing algorithm, so that the correction value is more accurately calculated, and the correction value is written into the detected liquid level meter 8 through the HART modem.
The foregoing has shown and described the basic principles, main features and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present invention, and various changes and modifications may be made without departing from the spirit and scope of the invention, which is defined in the appended claims. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (5)
1. The automatic detection, calibration and correction system for the wide-range liquid level meter is characterized by comprising a frame (1), wherein a first guide rail (2) and a second guide rail (3) which are parallel to each other are arranged on the frame (1), a floating ball fixing sliding block (4) is movably arranged on the first guide rail (2), a floating ball fixing mechanism is arranged on the floating ball fixing sliding block (4), a detector mounting sliding block (5) is movably arranged on the second guide rail (3), the detector mounting sliding block (5) is used for mounting a detector (35), a connecting plate (6) is fixedly arranged between the detector mounting sliding block (5) and the floating ball fixing sliding block (4), and a liquid level meter fixing mechanism and a mobile driving mechanism for driving the connecting plate (6) to move are further arranged on the frame (1); the device comprises a liquid level meter (8), a detector (35), an upper computer (7) and a detection control module (46), wherein the detector (35) sends the moving distance of the detector mounting slide block (5) to the upper computer (7) through the detection control module (46), the upper computer (7) collects the moving distance of a floating ball (9) output by the liquid level meter (8) to be detected, and the upper computer (7) calculates a correction value according to the moving distance of the detector mounting slide block (5) and the moving distance of the floating ball (9) output by the liquid level meter (8) to be detected and writes the correction value into the liquid level meter (8) to be detected; the machine frame (1) is also provided with a third guide rail (10) parallel to the first guide rail (2) and the second guide rail (3), the third guide rail (10) is positioned between the first guide rail (2) and the second guide rail (3), the third guide rail (10) is movably provided with a driving slide block (11), the connecting plate (6) is fixedly arranged on the driving slide block (11), and the movable driving mechanism is arranged between the driving slide block (11) and the third guide rail (10); the floating ball fixing mechanism comprises a telescopic rod (12) fixedly arranged on the floating ball fixing sliding block (4), a supporting column (13) is fixedly arranged at the upper end of the telescopic rod (12), and a floating ball clamping piece (45) is fixedly arranged on the supporting column (13); the liquid level meter fixing mechanism comprises at least two liquid level meter mounting sliding blocks (14) movably mounted on the first guide rail (2), a position locking mechanism is arranged between the liquid level meter mounting sliding blocks (14) and the first guide rail (2), and a liquid level meter clamping piece (44) is arranged on the liquid level meter mounting sliding blocks (14); swing plates (20) are rotatably arranged on the driving sliding blocks (11), the number of the swing plates (20) is two, the two swing plates (20) are respectively positioned on two sides of the floating ball (9), the rotation axis of the swing plates (20) is perpendicular to the upper surface of the driving sliding blocks (11), telescopic supporting rods (21) are fixedly arranged on the swing plates (20), supporting columns (13) are fixedly arranged on the upper ends of the telescopic supporting rods (21), and movable clamping pieces (43) are fixedly arranged on the supporting columns (13); the movable sliding blocks (25) positioned on two sides of the floating ball fixing sliding block (4) are movably mounted on the first guide rail (2), and a detachable fixing and mounting mechanism is arranged between the movable sliding blocks (25) and the swinging plate (20).
2. The automatic detection, calibration and correction system for a wide-range liquid level meter according to claim 1, wherein a universal supporting mechanism is arranged between the liquid level meter mounting sliding block (14) and the liquid level meter clamping piece (44), the universal supporting mechanism comprises a spherical groove (15) arranged on a supporting block (37), a universal ball (16) is movably arranged in the spherical groove (15), the universal supporting mechanism further comprises a limiting plate (17) for downwards pressing the universal ball (16), a through hole (18) for exposing the upper part of the universal ball (16) is formed in the limiting plate (17), a pressing fixing bolt (19) is arranged between the limiting plate (17) and the supporting block (37), a supporting column (13) is fixedly arranged on the upper part of the universal ball (16), a liquid level meter clamping piece (44) is fixedly arranged on the supporting column (13), and a mounting mechanism is arranged between the supporting block (37) and the liquid level meter mounting sliding block (14).
3. The automatic detection, calibration and correction system for a wide-range liquid level meter according to claim 1, wherein the movable clamping piece (43), the liquid level meter clamping piece (44) and the floating ball clamping piece (45) comprise clamping seats (22) fixedly installed on the supporting columns (13), the clamping seats (22) are hinged with arc clamping plates (23) or elastic connecting pieces (34) are arranged between the clamping seats (22) and the arc clamping plates (23), clamping connecting pieces (36) are arranged between the arc clamping plates (23) and the clamping seats (22), and rubber cushion blocks (24) are arranged on the inner surfaces of the clamping seats (22) and the arc clamping plates (23).
4. The automatic detection, calibration and correction system for the wide-range liquid level meter according to claim 1, wherein a front limit slider (26) and a rear limit slider (27) which are positioned on two sides of the detector mounting slider (5) are movably mounted on the second guide rail (3), a slider position locking mechanism is arranged between the front limit slider (26), the rear limit slider (27) and the second guide rail (3), a proximity switch (28) is mounted on the front limit slider (26) and the rear limit slider (27) respectively, and a limit signal reflecting plate (29) is fixedly mounted on the detector mounting slider (5).
5. A wide range liquid level meter automatic detection calibration correction system according to claim 3, characterized in that the rubber cushion blocks (24) of the movable clamping pieces (43) are respectively provided with grooves (30), rubber ball seats (31) are movably installed in the grooves (30), rubber balls (32) are rotatably installed on the rubber ball seats (31), and supporting springs (33) are arranged between the rubber ball seats (31) and the bottoms of the grooves (30).
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| CN202310039096.1A CN116519101B (en) | 2023-01-13 | 2023-01-13 | Automatic detection, calibration and correction system for wide-range liquid level meter |
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| CN117367548A (en) * | 2023-10-27 | 2024-01-09 | 北京菲舍波特科技发展有限公司 | Device and method for calibrating length of detection scale rod of magnetic liquid level meter |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2412405A1 (en) * | 2001-11-29 | 2003-05-29 | Joseph C. Fiore | Liquid level gauge and specific gravity calibration therefor |
| CN107747995A (en) * | 2017-10-19 | 2018-03-02 | 中国南方电网有限责任公司超高压输电公司检修试验中心 | The liquid level gauge filed detection system and method for a kind of high voltage direct current converter valve cooling system |
| CN108779998A (en) * | 2016-03-25 | 2018-11-09 | 高准公司 | Method and relevant device for maximizing flowmeter downward |
| CN210922783U (en) * | 2019-09-19 | 2020-07-03 | 天津市计量监督检测科学研究院 | Horizontal type calibrating device for floating ball liquid level meter |
| CN113390754A (en) * | 2021-06-11 | 2021-09-14 | 山东非金属材料研究所 | Automatic verification/calibration device and method for glass float meter |
| CN216283831U (en) * | 2021-11-29 | 2022-04-12 | 阿米检测技术有限公司 | Horizontal guide rod magnetic floater level gauge calibrating device |
-
2023
- 2023-01-13 CN CN202310039096.1A patent/CN116519101B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2412405A1 (en) * | 2001-11-29 | 2003-05-29 | Joseph C. Fiore | Liquid level gauge and specific gravity calibration therefor |
| CN108779998A (en) * | 2016-03-25 | 2018-11-09 | 高准公司 | Method and relevant device for maximizing flowmeter downward |
| CN107747995A (en) * | 2017-10-19 | 2018-03-02 | 中国南方电网有限责任公司超高压输电公司检修试验中心 | The liquid level gauge filed detection system and method for a kind of high voltage direct current converter valve cooling system |
| CN210922783U (en) * | 2019-09-19 | 2020-07-03 | 天津市计量监督检测科学研究院 | Horizontal type calibrating device for floating ball liquid level meter |
| CN113390754A (en) * | 2021-06-11 | 2021-09-14 | 山东非金属材料研究所 | Automatic verification/calibration device and method for glass float meter |
| CN216283831U (en) * | 2021-11-29 | 2022-04-12 | 阿米检测技术有限公司 | Horizontal guide rod magnetic floater level gauge calibrating device |
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