CN112229484A - Radar level meter measurement accuracy detection device - Google Patents
Radar level meter measurement accuracy detection device Download PDFInfo
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- CN112229484A CN112229484A CN202011129795.8A CN202011129795A CN112229484A CN 112229484 A CN112229484 A CN 112229484A CN 202011129795 A CN202011129795 A CN 202011129795A CN 112229484 A CN112229484 A CN 112229484A
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- 238000001514 detection method Methods 0.000 title claims abstract description 21
- 238000005259 measurement Methods 0.000 title claims abstract description 13
- 238000004804 winding Methods 0.000 claims abstract description 82
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 58
- 239000010959 steel Substances 0.000 claims abstract description 58
- 239000003638 chemical reducing agent Substances 0.000 claims description 10
- 239000011358 absorbing material Substances 0.000 claims description 4
- 230000005540 biological transmission Effects 0.000 abstract description 7
- 238000010586 diagram Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 2
- -1 chemical engineering Substances 0.000 description 1
- 238000003889 chemical engineering Methods 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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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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- Fluid Mechanics (AREA)
- General Physics & Mathematics (AREA)
- Optical Radar Systems And Details Thereof (AREA)
Abstract
The invention relates to a radar level gauge measuring precision detecting device, which is characterized by comprising a driving device (1), a slideway platform (3), a reflecting plate (4), a laser range finder (8), a laser range finder display (81) and a wave-absorbing cover (9), wherein the driving device comprises a servo motor, a first winding roller, a second winding roller, a ball screw linear sliding table device and a gear transmission mechanism, wherein the servo motor is arranged on a rack; two ends of a steel wire rope (2) are wound on the first winding roller and the second winding roller; a slide rail and a steel wire rope positioning guide pulley block are arranged on the slide way platform, the reflecting plate is in sliding fit with the slide rail on the slide way platform through a slide block, and the steel wire rope drives the reflecting plate to slide back and forth on the slide way platform; the laser range finder and the radar level meter (A) are arranged on a frame body of the driving device; the laser range finder measures the distance from the radar level meter to the reflecting plate and compares the distance to detect the measurement accuracy of the radar level meter, and the laser range finder is simple and convenient to operate, high in efficiency and high in detection accuracy.
Description
Technical Field
The invention relates to a device for detecting the measurement accuracy of a radar level gauge.
Background
The radar level gauge is widely used for level measurement in industries such as petroleum, chemical engineering, coal, steel, medicine, water conservancy and the like.
The radar level meter consists of a meter head assembly and an antenna assembly, and during measurement, the radar level meter transmits a short pulse through an antenna emitter, the pulse propagates in space and meets the surface of a measured medium, and part of energy of the pulse is reflected back and received by the same antenna. The time interval between the transmitted pulse and the received pulse is proportional to the distance between the antenna and the surface of the measured medium, and the height of the material level is calculated.
The measurement precision of the radar level meter is +/-3 mm (the basic error is +/-3 mm, the repeatability is 1.5 mm), and the measuring range reaches 30 m. In the prior art, the measurement precision of the radar level gauge is detected by pasting a measuring tape on the ground to mark at least 5 scale marks with 20%, 40%, 60%, 80% and 100% of measuring ranges, manually moving a reflecting plate to the scale marks of each measuring range, comparing the difference value between the measurement value and the actual distance of the radar level gauge, and detecting the precision of the radar level gauge.
The method for detecting the measurement accuracy of the radar level meter wastes time and labor, is operated manually completely, has large operation errors of the scale marks of the measuring range and the position of the manually moved reflecting plate, and cannot fully ensure the detection of the detection accuracy of the radar level meter.
Disclosure of Invention
The invention aims to provide a radar level gauge measuring precision detection device which is high in detection precision, convenient to detect and high in efficiency.
The invention relates to a radar level gauge measuring precision detecting device which comprises a driving device, a slideway platform, a reflecting plate device, a laser range finder display and a wave-absorbing cover.
The driving device comprises a rack, a servo motor arranged on the rack, a servo motor reducer, a servo motor controller, a reducer output shaft gear, a first idle wheel gear, a first winding roller gear, a second winding roller gear, a ball screw linear sliding table device, a screw rod gear, a second idle wheel gear and a lead frame.
An output shaft gear of the speed reducer drives a first winding roller gear to drive a first winding roller to rotate through a first intermediate gear; the first winding roller gear drives the lead screw to rotate through the second intermediate wheel gear, and the lead screw gear drives the second winding roller gear to drive the second winding roller to rotate; and winding two ends of the steel wire rope on the first winding roller and the second winding roller.
The lead screw sliding block of the ball screw linear sliding table device is fixedly connected with a lead frame, a first winding roller steel wire rope guide hole seat sleeve and a second winding roller steel wire rope guide hole seat sleeve are respectively arranged on the lead frame corresponding to a first winding roller and a second winding roller, and a first winding roller steel wire rope guide pulley block and a second winding roller steel wire rope guide pulley block are respectively arranged on the lead frame corresponding to the first winding roller steel wire rope guide hole seat sleeve and the second winding roller steel wire rope guide hole seat sleeve so as to ensure that the steel wire ropes are aligned to the first winding roller steel wire rope guide hole seat sleeve and the second winding roller steel wire rope guide hole seat sleeve.
The slideway platform consists of a frame body, slide rails respectively fixedly arranged on the left side and the right side of the upper end of the frame body, a left wire rope positioning guide pulley block and a right wire rope positioning guide pulley block which are arranged on the front end of the frame body, a plurality of wire rope supporting pulleys arranged on the frame body, and a wire rope turning and tensioning mechanism arranged on the rear end of the frame body; the steel wire rope is arranged on the upper end surface of the slideway platform frame body through a left steel wire rope positioning guide pulley block, a right steel wire rope positioning guide pulley block, a steel wire rope support pulley and a steel wire rope reverse turning tensioning mechanism on the slideway platform frame body.
The reflecting plate device consists of a supporting frame, a reflecting plate vertically and fixedly arranged on the supporting frame and sliding blocks respectively fixed on the left side and the right side of the lower end of the supporting frame, the supporting frame is in sliding fit with a sliding rail on the detection platform frame through the sliding blocks on the left side and the right side of the lower end of the supporting frame, and the lower end of the supporting frame is fixedly connected with a steel wire rope on one side; the steel wire rope drives the support frame to slide back and forth on the slide rail of the slide platform.
The laser range finder and the laser range finder display are arranged on the frame body of the driving device.
The upper end face of the frame of the driving device is provided with a radar level gauge positioning mounting seat.
The driving device, the slideway platform and the reflecting plate device are integrally arranged in the wave-absorbing cover, the wave-absorbing cover is provided with a personnel access door, and the inner surface of the wave-absorbing cover is provided with wave-absorbing materials.
The servo motor controller controls the servo motor, and the servo motor performs high-precision transmission through the gear transmission mechanism; the servo motor drives the first winding roller and the second winding roller to synchronously and reversely rotate through gear transmission, so that one end of the steel wire rope is wound and the other end of the steel wire rope is discharged; meanwhile, a servo motor drives a lead screw of the ball screw linear sliding table to rotate through gear transmission, a lead screw sliding block is driven to horizontally reciprocate, and the lead screw sliding block is connected with a first winding roller steel wire rope guide pulley block/a second winding roller steel wire rope guide pulley block arranged on a lead frame to enable the steel wire ropes to be tiled and wound on the first winding roller/the second winding roller; the steel wire rope drives the supporting frame of the reflecting plate device to slide on the sliding rail of the detection platform frame to move back and forth, so that the stopping position and time of the reflecting plate are realized, and the repeated action control is realized.
The distance from the radar level gauge A to the reflecting plate 42 is measured by the laser range finder 8 and sent to the laser range finder display 81, the data is compared with the distance from the radar level gauge A to the reflecting plate 42, and the measurement accuracy of the radar level gauge A can be detected by comparing the data with the data of the radar level gauge A.
The invention has the advantages of convenient manufacture, high detection precision and high efficiency. The precision of the laser range finder 8 is +/-0.5 mm, the precision of a servo motor system can be guaranteed to be within +/-0.1 mm, and the reflector plate 42 can be accurately controlled to move to at least 5 positions of 20%, 40%, 60%, 80% and 100% of the specified detection range; and can easily realize the accurate positioning of the wide-range reflecting plate 42 of more than 30m, ensure the accuracy of the whole detection device within +/-1 mm, and can detect the radar level gauge with the accuracy of +/-3 mm. Meanwhile, the wave-absorbing material in the wave-absorbing cover 9 can absorb interference signals, simulate the change of the on-site material level and further ensure the detection precision.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment of the present invention.
Fig. 2 and 3 are schematic structural diagrams of an embodiment of the driving device 1.
Fig. 4 is a schematic structural diagram of an embodiment of the reflection plate device 4.
Fig. 5 is a schematic structural diagram of an embodiment of the wire rope reverse turning tensioning mechanism 5.
Detailed Description
The invention relates to a radar level gauge measuring precision detection device, which comprises a driving device 1, a slideway platform 3, a reflecting plate device 4, a laser range finder 8, a laser range finder display 81 and a wave-absorbing cover 9.
The driving device 1 comprises a frame 10, a servo motor 11 arranged on the frame 10, a servo motor reducer 111, a servo motor controller 112, a reducer output shaft gear 110, a first idle gear 12, a first winding roller 13, a first winding roller gear 130, a second winding roller 14, a second winding roller gear 140, a ball screw linear sliding table device 15, a screw gear 150, a second idle gear 16 and a lead frame 17.
The reducer output shaft gear 110 drives the first winding roller gear 130 to drive the first winding roller 13 to rotate through the first intermediate wheel gear 12; the first winding roller gear 130 drives the lead screw gear 150 to rotate through the second intermediate gear 16, and the lead screw gear 150 drives the second winding roller gear 140 to drive the second winding roller 14 to rotate; both ends of the wire rope 2 are wound around the first winding roller 13 and the second winding roller 14.
The reducer output shaft gear 110 drives the first winding roller gear 130 to drive the first winding roller 13 to rotate through the first intermediate wheel gear 12; the first winding roller gear 130 drives the lead screw gear 150 to drive the lead screw 152 to rotate through the second intermediate gear 16, and the lead screw gear 150 drives the second winding roller gear 140 to drive the second winding roller 14 to rotate; both ends of the wire rope 2 are wound around the first winding roller 13 and the second winding roller 14.
A lead frame 17 is fixedly connected to a lead screw slider 151 of the ball screw linear sliding table device 15, a first winding roller wire rope guide hole seat cover 173 and a second winding roller wire rope guide hole seat cover 174 are respectively formed on the lead frame 17 corresponding to the first winding roller 13 and the second winding roller 14, and a first winding roller wire rope guide pulley block 176 and a second winding roller wire rope guide pulley block 178 are respectively formed on the lead frame 17 corresponding to the first winding roller wire rope guide hole seat cover 173 and the second winding roller wire rope guide hole seat cover 174.
The slideway platform 3 is composed of a frame body 31, slide rails 32 respectively fixedly installed at the left and right sides of the upper end of the frame body 31, a left wire rope positioning guide pulley block 21a and a right wire rope positioning guide pulley block 21b which are installed at the upper front end of the frame body 31, a plurality of wire rope support pulleys 33 which are installed on the frame body 31, and a wire rope reverse turning tensioning mechanism 5 which is installed at the rear end of the frame body 31. The steel wire rope 2 is arranged on the upper end surface of the slideway platform frame 31 through a left steel wire rope positioning guide pulley block 21a and a right steel wire rope positioning guide pulley block 21b on the slideway platform frame 31, a steel wire rope support pulley 33 and a steel wire rope reverse turning tensioning mechanism 5.
The reflecting plate device 4 is composed of a supporting frame 41, a reflecting plate 42 vertically and fixedly installed on the supporting frame 41, and sliding blocks 43 respectively fixed on the left side and the right side of the lower end of the supporting frame 41, the supporting frame 41 is in sliding fit with the sliding rails 32 on the detection platform frame 3 through the sliding blocks 43 on the left side and the right side of the lower end of the supporting frame 41, and the lower end of the supporting frame 41 is fixedly connected with the steel wire rope 2 on one side; the steel wire rope 2 drives the support frame 41 to slide back and forth on the slide rail 32 of the slide platform 3.
The laser range finder 8 and the laser range finder display 81 are mounted on the frame body 10 of the driving device 1.
A radar level gauge a positioning mounting 18 is provided on the upper end face of the frame 10 of the drive unit 1.
In the embodiment shown in the drawings, the locking device 5 is composed of a pair of slide rods 51 fixed at the rear end of the detection platform 3, a slide plate 52 slidably fitted on the slide rods 51, a pair of wire rope 2 tensioning reverse guide pulleys 53 mounted on the slide plate 52, and a tensioning adjusting screw 54 mounted at the rear end of the detection platform 3 and acting on the slide plate 52.
The driving device 1, the slideway platform 3 and the reflecting plate device 4 are integrally arranged in the wave-absorbing cover 9, a personnel access door is arranged on the wave-absorbing cover 9, and the inner surface of the wave-absorbing cover 9 is provided with wave-absorbing materials 91, such as pyramid wave-absorbing sponge.
The servo motor drives the first winding roller 13 and the second winding roller 14 to synchronously and reversely rotate through the gear transmission mechanism, so that one end of each of two ends of the steel wire rope 2 is wound and the other end of each of the two ends of the steel wire rope is discharged; meanwhile, the servo motor drives the lead screw 152 of the ball screw linear sliding table 15 to rotate through gear transmission, drives the lead screw sliding block 151 to horizontally reciprocate, and the lead screw sliding block is connected with a first winding roller steel wire rope guide pulley block 176/a second winding roller steel wire rope guide pulley block 178 arranged on the lead frame 17 so that the steel wire rope 2 is flatly paved and wound on the first winding roller 13/the second winding roller 14; the steel wire rope 2 drives the supporting frame 41 of the reflecting plate device to slide on the slide rail 32 of the detection platform frame to move back and forth, and the stopping position and time of the reflecting plate 42 are controlled by repeated actions.
Claims (2)
1. The radar level gauge measurement accuracy detection device is characterized by comprising a driving device (1), a slideway platform (3), a reflecting plate device (4), a laser range finder (8) and a laser range finder display (81);
the driving device (1) consists of a rack (10), a servo motor (11) arranged on the rack (10), a servo motor reducer (111), a servo motor controller (112), a reducer output shaft gear (110), a first idle wheel gear (12), a first winding roller (13), a first winding roller gear (130), a second winding roller (14), a second winding roller gear (140), a ball screw linear sliding table device (15), a screw rod gear (150), a second idle wheel gear (16) and a lead frame (17);
the reducer output shaft gear (110) drives the first winding roller shaft gear (130) to drive the first winding roller (13) to rotate through the first intermediate wheel gear (12); the first winding roller gear (130) drives the lead screw gear (150) to drive the lead screw (152) to rotate through the second intermediate gear (16), and the lead screw gear (150) drives the second winding roller gear (140) to drive the second winding roller (14) to rotate; winding two ends of the steel wire rope (2) on a first winding roller (13) and a second winding roller (14);
a lead screw sliding block (151) of the ball screw linear sliding table device (15) is fixedly connected with a lead frame (17), a first winding roller steel wire rope guide hole seat sleeve (173) and a second winding roller steel wire rope guide hole seat sleeve (174) are respectively arranged on the lead frame (17) corresponding to a first winding roller (13) and a second winding roller (14), and a first winding roller steel wire rope guide pulley block (176) and a second winding roller steel wire rope guide pulley block (178) are respectively arranged on the lead frame (17) corresponding to the first winding roller steel wire rope guide hole seat sleeve (173) and the second winding roller steel wire rope guide hole seat sleeve (174);
the slideway platform (3) is composed of a frame body (31), slide rails (32) respectively fixedly installed on the left side and the right side of the upper end of the frame body (31), a left steel wire rope positioning guide pulley block (21a) and a right steel wire rope positioning guide pulley block (21b) which are installed on the upper front end of the frame body (31), a plurality of steel wire rope supporting pulleys (33) which are installed on the frame body (31), and a steel wire rope reverse turning tensioning mechanism (5) which is installed on the rear end of the frame body (31); the steel wire rope (2) is arranged on the upper end surface of the slideway platform frame body (31) through a left steel wire rope positioning guide pulley block (21a) and a right steel wire rope positioning guide pulley block (21b) on the slideway platform frame body (31), a steel wire rope support pulley (33) and a steel wire rope reverse turning tensioning mechanism (5);
the reflecting plate device (4) is composed of a supporting frame (41), a reflecting plate (42) vertically and fixedly installed on the supporting frame (41) and sliding blocks (43) respectively fixed on the left side and the right side of the lower end of the supporting frame (41), the supporting frame (41) is in sliding fit with sliding rails (32) on the detection platform frame (3) through the sliding blocks (43) on the left side and the right side of the lower end of the supporting frame (41), and the lower end of the supporting frame (41) is fixedly connected with a steel wire rope (2) on one side; the steel wire rope (2) drives the support frame (41) to slide back and forth on the slide rail (32) of the slide platform (3);
the laser range finder (8) and the laser range finder display (81) are arranged on the frame body (10) of the driving device (1);
the upper end face of a frame (10) of the driving device (1) is provided with a positioning mounting seat (18) of a radar level gauge (A).
2. The radar level gauge measurement accuracy detection device according to claim 1, wherein:
the driving device (1), the slideway platform (3) and the reflecting plate device (4) are integrally arranged in the wave absorbing cover (9), the wave absorbing cover (9) is provided with an personnel access door, and the inner surface of the wave absorbing cover (9) is provided with wave absorbing materials (91).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011129795.8A CN112229484A (en) | 2020-10-21 | 2020-10-21 | Radar level meter measurement accuracy detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011129795.8A CN112229484A (en) | 2020-10-21 | 2020-10-21 | Radar level meter measurement accuracy detection device |
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| Publication Number | Publication Date |
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| CN112229484A true CN112229484A (en) | 2021-01-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202011129795.8A Pending CN112229484A (en) | 2020-10-21 | 2020-10-21 | Radar level meter measurement accuracy detection device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU206346U1 (en) * | 2021-06-11 | 2021-09-07 | Общество с ограниченной ответственностью "Метрология-Комплект" | Metrological stand for level gauge calibration |
| CN113654621A (en) * | 2021-08-12 | 2021-11-16 | 江西省天驰高速科技发展有限公司 | Radar checking device and method |
| CN118168633A (en) * | 2024-05-14 | 2024-06-11 | 中仪雷科(苏州)电子科技有限公司 | Dynamic detection radar fixed mounting overlap joint device |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2036779A1 (en) * | 1990-02-26 | 1991-08-27 | Akio Nagamune | In-furnace level meter and antenna therefor |
| JPH0953925A (en) * | 1995-08-18 | 1997-02-25 | Oki Ceramic Kogyo Kk | Ultrasonic reflection type range finder |
| CN201852617U (en) * | 2010-11-08 | 2011-06-01 | 中交第三航务工程局有限公司 | Sand surface detector |
| CN103674176A (en) * | 2013-12-19 | 2014-03-26 | 重庆川仪自动化股份有限公司 | Material level detection method and device |
| CN105157794A (en) * | 2015-09-07 | 2015-12-16 | 丹东通博电器(集团)有限公司 | Guided wave radar liquidometer detection device |
| CN213658028U (en) * | 2020-10-21 | 2021-07-09 | 丹东通博电器(集团)有限公司 | Radar level meter measurement accuracy detection device |
| CN116358671A (en) * | 2023-04-07 | 2023-06-30 | 河南省计量科学研究院 | Ultrasonic liquid level meter field calibration equipment |
| CN220472764U (en) * | 2023-07-12 | 2024-02-09 | 北京京仪仪器仪表研究总院有限公司 | Reflecting plate lifting device for radar level gauge precision detection |
-
2020
- 2020-10-21 CN CN202011129795.8A patent/CN112229484A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2036779A1 (en) * | 1990-02-26 | 1991-08-27 | Akio Nagamune | In-furnace level meter and antenna therefor |
| JPH0953925A (en) * | 1995-08-18 | 1997-02-25 | Oki Ceramic Kogyo Kk | Ultrasonic reflection type range finder |
| CN201852617U (en) * | 2010-11-08 | 2011-06-01 | 中交第三航务工程局有限公司 | Sand surface detector |
| CN103674176A (en) * | 2013-12-19 | 2014-03-26 | 重庆川仪自动化股份有限公司 | Material level detection method and device |
| CN105157794A (en) * | 2015-09-07 | 2015-12-16 | 丹东通博电器(集团)有限公司 | Guided wave radar liquidometer detection device |
| CN213658028U (en) * | 2020-10-21 | 2021-07-09 | 丹东通博电器(集团)有限公司 | Radar level meter measurement accuracy detection device |
| CN116358671A (en) * | 2023-04-07 | 2023-06-30 | 河南省计量科学研究院 | Ultrasonic liquid level meter field calibration equipment |
| CN220472764U (en) * | 2023-07-12 | 2024-02-09 | 北京京仪仪器仪表研究总院有限公司 | Reflecting plate lifting device for radar level gauge precision detection |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU206346U1 (en) * | 2021-06-11 | 2021-09-07 | Общество с ограниченной ответственностью "Метрология-Комплект" | Metrological stand for level gauge calibration |
| CN113654621A (en) * | 2021-08-12 | 2021-11-16 | 江西省天驰高速科技发展有限公司 | Radar checking device and method |
| CN118168633A (en) * | 2024-05-14 | 2024-06-11 | 中仪雷科(苏州)电子科技有限公司 | Dynamic detection radar fixed mounting overlap joint device |
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