CN218566643U - Ultrasonic wave level gauge calibrating device - Google Patents
Ultrasonic wave level gauge calibrating device Download PDFInfo
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- CN218566643U CN218566643U CN202222090293.XU CN202222090293U CN218566643U CN 218566643 U CN218566643 U CN 218566643U CN 202222090293 U CN202222090293 U CN 202222090293U CN 218566643 U CN218566643 U CN 218566643U
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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
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- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
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Abstract
The utility model relates to an ultrasonic wave level gauge calibrating device, including the transmitting terminal, the reflection end that can set up relatively, install the ultrasonic wave level gauge sample that waits to detect on the transmitting terminal, its characterized in that: the transmitting end comprises a ranging laser sensor A, an auxiliary positioning laser B and an auxiliary positioning laser C which are arranged on a transmitting end fixing frame, and the positions of the ranging laser sensor A, the auxiliary positioning laser B and the auxiliary positioning laser C form a transmitting end triangle; the sample of the ultrasonic liquid level meter is fixed on the transmitting end fixing frame, and the laser transmitting direction of the sample of the ultrasonic liquid level meter is vertical to the plane of the triangle of the transmitting end; the reflecting end comprises a positioning point A, a positioning point B and a positioning point C which are arranged on the reflecting plate, and the three points form a reflecting end triangle which can be correspondingly superposed with the transmitting end triangle; the reflecting plate is arranged on the reflecting end fixing frame; the transmitting end fixing frame and the reflecting end fixing frame are respectively and independently arranged; the field calibration can be realized, and the calibration can be realized without large-area flat terrain.
Description
Technical Field
The utility model relates to a calibration technical field of liquid level detection instrument, concretely relates to ultrasonic wave level gauge calibrating device.
Background
The ultrasonic liquid level meter is a non-contact liquid level measuring instrument, and has high measuring precision, so that it may be used widely in measuring water level, water level difference, flow rate, etc.
However, the working environment condition of the ultrasonic liquid level meter is often severe, and the measurement accuracy of the ultrasonic liquid level meter cannot be maintained for a long time due to the severe environments such as low-temperature humidity, corrosion, insolation and the like during liquid level monitoring in the environments such as water treatment, petroleum or chemical industry and the like, thereby bringing about great potential safety hazard. At present, the domestic calibration method for the ultrasonic liquid level meter can be divided into two types according to the calibration place: laboratory calibration and field calibration. Two main methods for laboratory calibration are available, one is to calibrate a liquid level meter by matching a water tank type detection device with a standard instrument, and the method is more accurate and is the most widely used method; the other method is to use a horizontal liquid level simulation calibrating device to simulate the reflecting plate into a liquid level surface, and the calibrating and calibration of the ultrasonic liquid level meter are realized by reading different distances of the reflecting plate and comparing the distances with standard measuring tools.
The existing calibration method for the ultrasonic liquid level meter in the laboratory is mature, but is limited by factors such as environment, instrument and equipment size, and the ultrasonic liquid level meter can only be calibrated after being sent to the laboratory, but certain deviation can be generated in field use due to the fact that the laboratory calibration cannot simulate field working conditions and the difference of working conditions such as medium types, temperature, pressure, flow ranges and the like cannot be avoided. After the ultrasonic liquid level meter is installed and used for a long time, the ultrasonic liquid level meter is influenced by various environments, the measurement precision of the ultrasonic liquid level meter is influenced inevitably, and the ultrasonic liquid level meter is disassembled and then sent to a laboratory for calibration, so that the potential safety hazard of engineering is avoided, and the calibration is very complicated. Therefore, the calibration service of the liquid level meter after the liquid level meter is put into use cannot be effectively realized in laboratory calibration.
The field calibration is not common at present, and the field calibration of the existing ultrasonic liquid level meter is similar to the method of a horizontal liquid level simulation calibrating device in a laboratory; and the field calibration technology is also harsh to the terrain and installation requirements of the field. For example, patent No. CN112212947A, entitled "an apparatus and method for on-site calibration of ultrasonic level meter", the invention proposes "an apparatus for on-site calibration of ultrasonic level meter, comprising an ultrasonic level meter transmitting part and an ultrasonic wave reflecting part; the ultrasonic transmitting part comprises a bottom plate A, the fixing unit comprises a transmitting plate vertically arranged on the bottom plate A, the right-angle stand fixing bottom plate A and the fixing unit comprise transmitting plates, the lower end of the bottom plate A is provided with an adjustable supporting foot A, the bottom plate A is also provided with a level gauge A, and the level gauge A and the bottom plate A are matched with each other to level the bottom plate; the ultrasonic liquid level meter fixing flange is arranged in the middle of the fixing unit including the transmitting plate through a stud A and a butterfly nut, a strong spring is sleeved on the stud A, and the ultrasonic liquid level meter to be calibrated is arranged on the ultrasonic liquid level meter fixing flange; the invention relates to a method for calibrating a liquid level of a highway tunnel, which comprises the steps of installing an infrared range finder A and an infrared range finder B on the top of a transmitting plate, and installing an infrared range finder C on the bottom of the transmitting plate. And the three high-precision laser distance measuring instruments are needed to realize that the generating end face is parallel to the reflecting surface, the cost expenditure is high, and whether the stability of the three laser distance measuring instruments is consistent or not can not be ensured.
Therefore, aiming at the defects of the prior art, the invention provides the calibration device and the calibration method of the ultrasonic liquid level meter, which have low cost and are relatively accurate, can realize field calibration, and can calibrate without large-area flat terrain.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome prior art not enough, provide an ultrasonic wave level gauge calibrating device, can realize the on-the-spot calibration, and need not large tracts of land flat topography and can calibrate, and ensure that the precision is not influenced down, the use cost of this scheme is lower, and can need not to dismantle to the ultrasonic wave level gauge that has already gone into the engineering use, off-line alright realize measuring the calibration, do benefit to the safe and steady operation of assurance engineering.
The purpose of the utility model is realized through the following technical scheme:
ultrasonic wave level gauge calibrating device, including the transmitting terminal, the reflection end that can set up relatively, install the ultrasonic wave level gauge sample that waits to detect on the transmitting terminal, its characterized in that: the transmitting end comprises a ranging laser sensor A, an auxiliary positioning laser B and an auxiliary positioning laser C which are arranged on a transmitting end fixing frame, and the positions of the ranging laser sensor A, the auxiliary positioning laser B and the auxiliary positioning laser C form a transmitting end triangle;
the sample of the ultrasonic liquid level meter is fixed on the transmitting end fixing frame, and the laser transmitting direction of the sample is vertical to the plane of the triangle of the transmitting end;
the reflecting end comprises a positioning point A, a positioning point B and a positioning point C which are arranged on the reflecting plate, and the three points form a reflecting end triangle which can be correspondingly superposed with the transmitting end triangle; the reflecting plate is arranged on the reflecting end fixing frame; the transmitting end fixing frame and the reflecting end fixing frame are respectively and independently arranged;
during calibration, when the ranging laser sensor A, the auxiliary positioning laser B and the auxiliary positioning laser C respectively irradiate the corresponding positioning point A, the positioning point B and the positioning point C, laser emitted by the ultrasonic liquid level meter sample is perpendicular to the reflecting plate.
The calibration principle of the scheme is as follows: when the three laser energies of the ranging laser sensor A, the auxiliary positioning laser B and the auxiliary positioning laser C are simultaneously irradiated on the corresponding positioning point A, the positioning point B and the positioning point C, the ranging laser vertical reflecting plate is ensured, and therefore the distance is accurately measured; the plane is determined by three points, and the scheme ensures that the invention is in a state of being capable of implementing calibration and has high measurement precision by the direct vertical correspondence of the plane and the plane; therefore, in the aspect of the calibration principle, the scheme is different from the principle that a plurality of high-precision ranging laser sensors are needed to directly measure the distance in the prior art.
The laser matching of 'one measurement for two assistance' is realized through a distance measurement laser sensor A, an auxiliary positioning laser B and an auxiliary positioning laser C; the both ends face location and the calibration range finding of accomplishing the device through two assistance-localization real-time laser generator and a high accuracy range finding laser promptly, light all is the rectilinear propagation, consequently only is used for two assistance-localization real-time laser generator accuracy-free requirements of location, this scheme only need adopt a high accuracy range finding laser can to this scheme cost is lower than prior art.
Furthermore, the reflecting end fixing frame also comprises a cross-shaped supporting bottom frame and a fixing frame;
a square upright is vertically arranged on the cross-shaped supporting underframe; the reflecting plate is arranged on the front surface of the fixing frame through screws, and the fixing frame is arranged on the front side of the top of the square upright rod through a shovel-shaped vertical connecting piece. So as to ensure the flatness and stability of the surface of the reflecting plate.
Furthermore, the fixing frame is arranged at the top of the square upright stanchion through an adjusting plate a and an adjusting plate b; the adjusting plate a is fixed in the middle of the back of the fixing frame through a bolt, and the adjusting plate b is arranged on the end face of the front side of the shovel-shaped vertical connecting piece;
the adjusting plate a and the adjusting plate b are both provided with a central through hole; a through hole is respectively formed in the upper part, the lower part, the left part and the right part of the center hole of the adjusting plate b; a threaded hole is respectively formed in the upper side, the lower side, the left side and the right side of the center hole of the adjusting plate a, and the threaded hole and the through hole are correspondingly formed; the adjusting plate a and the adjusting plate b are correspondingly connected through four through holes and four threaded holes by four adjusting bolts;
and a steel ball is clamped between the two central through holes, and the diameter of the steel ball is larger than that of the central through hole, so that a gap is formed between the adjusting plate a and the adjusting plate b. The shovel-shaped vertical connecting piece is fixed at the top end of the square upright stanchion through two right-angle triangular connecting pieces, so that the adjusting plate b and the fixed mount are suspended in the air. The position relation of the adjusting plate a and the adjusting plate b is adjusted through the adjusting bolt, and therefore the left-right and pitching inclination angle adjustment of the reflecting plate can be achieved.
Furthermore, the transmitting end fixing frame comprises an H-shaped supporting frame, and four corners of the bottom of the H-shaped supporting frame are respectively provided with an adjustable supporting leg.
Furthermore, a long upright post is vertically arranged above the cross frame of the H-shaped support frame, and a sample fixing table for fixing a sample of the ultrasonic liquid level meter is arranged at the top of the long upright post;
the top of the crossing part of the H-shaped support frame cross frame and the vertical frame is respectively provided with a short upright post, and the auxiliary positioning laser B and the auxiliary positioning laser C are respectively and correspondingly arranged on the two short upright posts.
Further, the sample fixing table comprises a screw rod sliding table clamp, and the screw rod sliding table clamp is fixedly arranged at the top end of the long upright post;
the lead screw sliding table clamp comprises a lead screw rotatably mounted on a sliding table and two half-moon-shaped clamping piece sliding tables oppositely arranged on the lead screw, and the groove openings of the two half-moon-shaped clamping piece sliding tables are oppositely arranged so as to be convenient for clamping an ultrasonic liquid level meter sample;
the top end of the lead screw penetrates out of the top plate of the sliding table upwards and then is provided with a knob;
when the ultrasonic liquid level meter sample is installed, the knob is rotated, and the two half-moon-shaped clamping piece sliding tables move oppositely along the vertical direction until the ultrasonic liquid level meter sample is clamped. As the front end parts of most of the ultrasonic liquid level meters are cylindrical, the ultrasonic liquid level meter samples can be oppositely clamped and fixed through the half-moon-shaped clamping piece sliding table. And the design of semilunar clamping piece slip table for this scheme can need not to dismantle, off-line alright realize measuring the calibration to the ultrasonic wave level gauge that drops into the engineering use, does benefit to the safe and stable operation of guaranteeing the engineering.
Furthermore, the sliding table is vertically fixed at the top of the fixed platform through an L-shaped connecting plate;
the bottom plate of the L-shaped connecting plate and the upper surface of the fixed platform, and the side plate of the L-shaped connecting plate and the back surface of the sliding table are respectively locked and fixed through screws;
the bottom end of the fixed platform is provided with a vertical connecting piece and is fixed at the top end of the long upright post through the vertical connecting piece.
Furthermore, the bottoms of the H-shaped supporting frames are respectively provided with a first roller, and four second rollers are arranged below the cross-shaped supporting underframe.
The utility model has the advantages that: (1) The transmitting end of the scheme adopts a distance measuring laser sensor A, an auxiliary positioning laser B and an auxiliary positioning laser C, and the distance measuring laser vertical reflecting plate is ensured in a mode that three points of laser at the transmitting end can simultaneously hit three corresponding positioning points A, B and C on the reflecting plate, so that the accurate measurement of the distance is realized; the laser matching of 'one measurement for two assistance' is realized by the ranging laser sensor A, the auxiliary positioning laser B and the auxiliary positioning laser C, namely, the positioning and the calibration ranging of two end faces of the device are completed by two auxiliary positioning laser generators and one high-precision ranging laser, and the light is transmitted linearly, so that the two auxiliary positioning laser generators only used for positioning have no precision requirement;
(2) The reflecting plate can change the inclination angle of the reflecting plate by adjusting the different depths of four adjusting bolts on the shovel-shaped vertical connecting piece in four through holes respectively so that the pitching and left-right angle of the reflecting plate is changed, the transmitting end and the reflecting end of the scheme are independently arranged, when the scheme is calibrated on uneven ground, the two end faces are opposite and parallel by adjusting the height of the lifting supporting foot or the inclination angle of the reflecting plate, the angles of the reflecting plate are accurately adjusted by four adjusting bolts so that the distance measuring laser sensor A and the auxiliary positioning lasers B and C can simultaneously irradiate on the corresponding positioning points A, B and C, the faces are determined by three points, and the invention is ensured to be in a practical calibration state by the direct vertical correspondence of the faces; the scheme can be further used for measuring and calibrating the ultrasonic liquid level meter on the engineering site without guaranteeing the ground flatness; in the scheme, the ultrasonic liquid level meter sample to be measured is clamped through the half-moon-shaped sliding table, and the ultrasonic liquid level meter sample can be directly measured and calibrated without being offline;
(3) The device reflection end is detachable, and the triangle connecting piece that links to each other with the perpendicular connecting piece of shovel form can be realized the reflecting plate and the separation of cross support frame through dismantling to take out, the outdoor transportation of being convenient for.
Drawings
Fig. 1 is a schematic view of the present invention;
FIG. 2 is a schematic diagram of the reflecting end and the emitting end of the present invention;
FIG. 3 is a schematic view of the reflection end of the present invention;
fig. 4 is a schematic diagram of the transmitting end of the present invention;
FIG. 5 is a schematic view of the back of the reflection end of the present invention;
FIG. 6 is a side view of the connection between the adjusting plate a and the adjusting plate b;
FIG. 7 is a schematic view of the connection at the spade-shaped vertical connector of the present invention;
FIG. 8 is a top view of the connection between the adjusting plate a and the adjusting plate b;
fig. 9 is a schematic top view of the transmitting end of the present invention;
fig. 10 is a schematic top view of the reflecting end of the present invention;
FIG. 11 is a schematic view of a sample holding stage according to the present invention;
fig. 12 is a schematic view of the L-shaped connection plate side of the sample fixing table of the present invention;
fig. 13 is a schematic view of the transmitting end of the present invention;
1-1, a distance measuring laser sensor A;1-2, assisting to position a laser B;1-3, auxiliary positioning laser C;2-1, positioning points A;2-2, positioning point B;2-3, positioning points C; 1. the supporting legs can be adjusted; 2. an H-shaped support frame; 3. a short upright post; 4. (ii) a 5. A long upright post; 6. a sample holding stage; 7. a cross-shaped support chassis; 8. a reflective plate; 9. a fixed mount; 10. an adjusting plate a; 11. an adjusting plate b; 12. a spade-shaped vertical connector; 13. a triangular connector; 14. adjusting the bolt; 15. a direction vertical rod; 16. a bevel support rod; 18. steel balls; 101. a first roller; 601. fixing the platform; 602. an L-shaped connecting plate; 603. a screw rod sliding table clamp; 701. a second roller; 6011. a vertical connecting member; 6031. a half-moon shaped clip sliding table; 6032. a screw rod; 6033. a knob; 6034. slip table, 6035, slip table slide rail.
Detailed Description
The technical solutions of the present invention are further described in detail below with reference to the accompanying drawings, but the scope of the present invention is not limited to the following descriptions.
As shown in fig. 1 to 13, the ultrasonic level meter calibration device includes a transmitting end and a reflecting end which can be oppositely arranged, wherein an ultrasonic level meter sample to be detected is installed on the transmitting end, the transmitting end includes a ranging laser sensor A1-1, an auxiliary positioning laser B1-2 and an auxiliary positioning laser C1-3 which are arranged on a transmitting end fixing frame, and the positions of the ranging laser sensor A1-1, the auxiliary positioning laser B1-2 and the auxiliary positioning laser C1-3 form a transmitting end triangle, and the laser transmitting directions of the ranging laser sensor A1-1, the auxiliary positioning laser B1-2 and the auxiliary positioning laser C1-3 are all perpendicular to the plane where the transmitting end triangle is located; meanwhile, the sample of the ultrasonic liquid level meter is fixed on a transmitting end fixing frame, and the laser transmitting direction of the sample is vertical to the plane of the triangle of the transmitting end; the reflection end comprises a positioning point A2-1, a positioning point B2-2 and a positioning point C2-3 which are arranged on the reflection plate 8, and the three points form a reflection end triangle which can be correspondingly superposed with the emission end triangle; the reflecting plate 8 is arranged on the reflecting end fixing frame; the transmitting end fixing frame and the reflecting end fixing frame are respectively and independently arranged.
During calibration, when the ranging laser sensor A1-1, the auxiliary positioning laser B1-2 and the auxiliary positioning laser C1-3 respectively irradiate the corresponding positioning point A2-1, the positioning point B2-2 and the positioning point C2-3, laser emitted by the sample of the ultrasonic liquid level meter is vertical to the reflecting plate 8.
The distance measurement laser sensor A1-1, the auxiliary positioning laser B1-2 and the auxiliary positioning laser C1-3 form a laser matching of 'one measurement and two assistance'; the distance measuring laser sensor A1-1, the auxiliary positioning laser B1-2 and the auxiliary positioning laser C1-3 form three-point laser of a transmitting end, the distance measuring laser vertical reflecting plate 8 and the distance can be accurately measured in a mode that the three-point laser of the transmitting end can simultaneously hit three corresponding positioning point positioning points A2-1, B2-2 and C2-3 on the reflecting plate 8, and the matching of 'one measuring two assisting' only needs to guarantee the precision of the distance measuring laser sensor A1-1, so that the cost is lower.
As shown in fig. 2 and 4, in the present solution, the reflection end fixing frame further includes a cross-shaped supporting bottom frame 7 and a fixing frame 9; a square upright rod 15 is vertically and upwards arranged on the cross-shaped supporting underframe 7; the reflecting plate 8 is arranged on the front surface of a fixing frame 9 through screws, and the fixing frame 9 is arranged on the front side of the top of a square upright rod 15 through a shovel-shaped vertical connecting piece 12. So as to ensure the flatness and stability of the surface of the reflecting plate 8.
In the scheme, as shown in fig. 5 and 6, a fixing frame 9 is arranged at the top of a square upright rod 15 through an adjusting plate a10 and an adjusting plate b 11; the adjusting plate a10 is fixed in the middle of the back of the fixing frame 9 through a bolt, and the adjusting plate b11 is arranged on the front end face of the shovel-shaped vertical connecting piece 12; the adjusting plate a10 and the adjusting plate b11 are both provided with a central through hole; a through hole is respectively arranged on the upper part, the lower part, the left part and the right part of a center hole of the adjusting plate b 11; a threaded hole is respectively formed in the upper part, the lower part, the left part and the right part of the center hole of the adjusting plate a10, and the threaded hole and the through hole are correspondingly arranged; the adjusting plate a10 and the adjusting plate b11 are correspondingly connected through four through holes and four threaded holes by four adjusting bolts 14; and steel balls 18 are clamped between the two central through holes at the middle positions of the four adjusting bolts 14, and the diameter of each steel ball 18 is larger than that of each central through hole, so that a gap is formed between the adjusting plate a10 and the adjusting plate b11 at intervals.
Optionally, in this scheme, the shovel-shaped vertical connecting piece 12 is fixed to the top end of the square vertical rod 15 through two right-angled triangular connecting pieces 13, so that the adjusting plate b11 and the fixing frame 9 are suspended in the air.
In this embodiment, the transmitting end fixing frame comprises an H-shaped supporting frame 2, and four corners of the bottom of the H-shaped supporting frame 2 are respectively provided with an adjustable supporting leg 1.
Furthermore, in the scheme, a long upright post 5 is vertically arranged above a cross frame of the H-shaped support frame 2, and a sample fixing table 6 for fixing a sample of the ultrasonic liquid level meter is arranged at the top of the long upright post 5; the top of the crossing part of the horizontal frame and the vertical frame of the H-shaped support frame 2 is respectively provided with a short upright post 3, and the auxiliary positioning laser B1-2 and the auxiliary positioning laser C1-3 are respectively and correspondingly arranged on the two short upright posts 3.
Optionally, the sample fixing table 6 includes a screw rod sliding table clamp 603, and the screw rod sliding table clamp 603 is fixedly installed at the top end of the long upright post 5; the screw rod sliding table clamp 603 comprises a screw rod 6032 rotatably mounted on a sliding table 6034, two sliding table sliding rails 6035 arranged on two sides of the screw rod 6032 in parallel, and two half-moon-shaped clamping piece sliding tables 6031 oppositely arranged on the screw rod 6032, and the groove openings of the two half-moon-shaped clamping piece sliding tables 6031 are oppositely arranged so as to clamp an ultrasonic liquid level meter sample; a through hole matched with the sliding table sliding rail 6035 is formed in the semilunar clamping piece sliding table 6031, and a knob 6033 is arranged after the top end of a lead screw 6032 penetrates out of a top plate of the sliding table 6034; when an ultrasonic liquid level meter sample is installed, the knob 6033 is rotated, and the two half-moon-shaped clamping piece sliding tables 6031 move oppositely along the vertical direction until the ultrasonic liquid level meter sample is clamped. As the front end part of most ultrasonic liquid level meters is cylindrical, the ultrasonic liquid level meter sample can be oppositely clamped and fixed through the half-moon-shaped clamping piece sliding table 6031.
Further, the sliding table 6034 is vertically fixed on the top of the fixed platform 601 through an L-shaped connecting plate 602; the bottom plate of the L-shaped connecting plate 602 is fixed on the upper surface of the fixed platform 601, and the side plate of the L-shaped connecting plate 602 is fixed on the back surface of the sliding table 6034 through screws; the bottom end of the fixed platform 601 is provided with a vertical connecting member 6011, and is fixed at the top end of the long upright post 5 via the vertical connecting member 6011.
Furthermore, in this embodiment, the bottom of the H-shaped supporting frame 2 is further provided with a first roller 101, and four second rollers 701 are further provided below the cross-shaped supporting underframe 7.
The calibration method of the scheme comprises the following steps:
the method comprises the following steps: the supporting legs 1 can be adjusted by adjusting the transmitting ends according to the terrain to enable the H-shaped supporting frame 2 to be in a proper height and horizontal state;
step two: fixing an ultrasonic liquid level meter sample to be calibrated on a sample fixing table 6, aligning a measuring port of the ultrasonic liquid level meter sample to be calibrated and a measuring port of a ranging laser sensor A1-1 in the same direction, and then clamping and fixing the ultrasonic liquid level meter sample through a knob 6033;
step three: starting the ranging laser and the auxiliary positioning laser, namely starting the ranging laser sensor A1-1, the auxiliary positioning laser B1-2 and the auxiliary positioning laser C1-3, moving the reflecting end to the opposite side of the transmitting end with the required calibration distance, positioning devices at two ends, and enabling the pitching and left-right angle of the reflecting plate 8 to be changed by adjusting the different depths of the four adjusting bolts 14 on the shovel-shaped vertical connecting piece 12 in the four through holes respectively; the three-point laser of the transmitting end can be transmitted to the corresponding positioning points at the same time, so that the ranging laser transmitted by the ranging laser sensor A1-1 can be vertically transmitted to the reflecting plate 8, and accurate ranging is realized;
step four: starting an ultrasonic liquid level meter sample, testing the distance between the liquid level meter sample and the reflecting plate 8, and simultaneously recording the measured data and the data of the ranging laser to realize comparison of the two;
step five: adjusting the distance between the transmitting end and the reflecting end by moving the transmitting end to calibrate and compare data of different calibration points; before testing the data of different calibration points, the third step is repeated to ensure the accuracy of the data.
In the scheme, the measuring port refers to a laser emitting end of an ultrasonic liquid level meter sample or a laser emitting end of a distance measuring laser sensor, and when the measuring port of the ultrasonic liquid level meter sample is aligned with the measuring port of the distance measuring laser sensor A1-1 in the same direction, the laser directions emitted by the measuring port and the distance measuring laser sensor A1-1 are in the same direction and parallel.
The foregoing is illustrative of the preferred embodiments of the present invention, and it is to be understood that the invention is not limited to the precise forms disclosed herein and that the invention is not to be considered as limited to the disclosed embodiments, but is capable of use in various other combinations, modifications, and environments and is capable of changes within the scope of the inventive concept as expressed herein, commensurate with the above teachings, or the skill or knowledge of the relevant art. But that modifications and variations may be effected by those skilled in the art without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (8)
1. Ultrasonic wave level gauge calibrating device, including the transmitting terminal, the reflection end that can set up relatively, install the ultrasonic wave level gauge sample that waits to detect on the transmitting terminal, its characterized in that:
the transmitting end comprises a ranging laser sensor A (1-1), an auxiliary positioning laser B (1-2) and an auxiliary positioning laser C (1-3) which are arranged on a transmitting end fixing frame, and the positions of the ranging laser sensor A, the auxiliary positioning laser B and the auxiliary positioning laser C form a transmitting end triangle;
the sample of the ultrasonic liquid level meter is fixed on the transmitting end fixing frame, and the laser transmitting direction of the sample is vertical to the plane of the triangle of the transmitting end;
the reflection end comprises a positioning point A (2-1), a positioning point B (2-2) and a positioning point C (2-3) which are arranged on the reflection plate (8), and the three points form a reflection end triangle which can be correspondingly superposed with the emission end triangle;
the reflecting plate (8) is arranged on the reflecting end fixing frame;
the transmitting end fixing frame and the reflecting end fixing frame are respectively and independently arranged.
2. An ultrasonic level gauge calibration device according to claim 1, wherein said reflection end fixture further comprises a cross-shaped support chassis (7), a fixture (9);
a square upright (15) is vertically and upwards arranged on the cross-shaped supporting underframe (7);
the reflecting plate (8) is arranged on the front surface of the fixing frame (9) through a screw, and the fixing frame (9) is arranged on the front side of the top of the square upright rod (15) through a shovel-shaped vertical connecting piece (12).
3. The ultrasonic level gauge calibrating device according to claim 2, wherein the fixing frame (9) is mounted on the top of a square upright (15) through an adjusting plate a (10) and an adjusting plate b (11);
the adjusting plate a (10) is fixed in the middle of the back of the fixing frame (9) through a bolt, and the adjusting plate b (11) is installed on the end face of the front side of the shovel-shaped vertical connecting piece (12);
the adjusting plate a (10) and the adjusting plate b (11) are both provided with a central through hole;
a through hole is respectively formed in the upper part, the lower part, the left part and the right part of a central hole of the adjusting plate b (11);
a threaded hole is respectively formed in the upper part, the lower part, the left part and the right part of a central hole of the adjusting plate a (10), and the threaded hole and the through hole are correspondingly formed;
the adjusting plate a (10) and the adjusting plate b (11) are correspondingly connected through four through holes and four threaded holes by four adjusting bolts (14);
and a steel ball (18) is clamped between the two central through holes, and the diameter of the steel ball (18) is larger than that of the central through hole so as to separate a gap between the adjusting plate a (10) and the adjusting plate b (11).
4. The calibrating device for the ultrasonic liquid level meter according to claim 3, wherein the transmitting end fixing frame comprises an H-shaped supporting frame (2), and four corners of the bottom of the H-shaped supporting frame (2) are respectively provided with an adjustable supporting leg (1).
5. The ultrasonic level gauge calibrating device according to claim 4, wherein a long upright (5) is vertically arranged above the cross frame of the H-shaped supporting frame (2), and a sample fixing table (6) for fixing a sample of the ultrasonic level gauge is arranged at the top of the long upright (5);
the top of the crossing part of the transverse frame and the vertical frame of the H-shaped support frame (2) is respectively provided with a short upright post (3), and the auxiliary positioning laser B (1-2) and the auxiliary positioning laser C (1-3) are respectively and correspondingly arranged on the two short upright posts (3).
6. The ultrasonic liquid level meter calibrating device according to claim 5, wherein the sample fixing table (6) comprises a screw rod sliding table clamp (603), and the screw rod sliding table clamp (603) is fixedly arranged at the top end of the long upright post (5);
the lead screw sliding table clamp (603) comprises a lead screw (6032) rotatably mounted on a sliding table (6034), and two half-moon-shaped clamping piece sliding tables (6031) oppositely arranged on the lead screw (6032), and the groove openings of the two half-moon-shaped clamping piece sliding tables (6031) are oppositely arranged so as to be convenient for clamping an ultrasonic liquid level meter sample;
the top end of the lead screw (6032) penetrates out of the top plate of the sliding table (6034) upwards and then is provided with a knob (6033);
when an ultrasonic liquid level meter sample is installed, the knob (6033) is rotated, and the two half-moon-shaped clamping piece sliding tables (6031) move oppositely along the vertical direction until the ultrasonic liquid level meter sample is clamped.
7. The ultrasonic level gauge calibrating device of claim 6, wherein the slide table (6034) is vertically fixed on the top of the fixed platform (601) through an L-shaped connecting plate (602);
a bottom plate of the L-shaped connecting plate (602) is fixedly connected with the upper surface of the fixed platform (601), and a side plate of the L-shaped connecting plate (602) is fixedly locked with the back surface of the sliding table (6034) through screws;
the bottom end of the fixed platform (601) is provided with a vertical connecting piece (6011) and is fixed at the top end of the long upright post (5) through the vertical connecting piece (6011).
8. The ultrasonic liquid level meter calibrating device according to claim 7, wherein the bottom of the H-shaped supporting frame (2) is further provided with a first roller (101), and four second rollers (701) are further arranged below the cross-shaped supporting underframe (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222090293.XU CN218566643U (en) | 2022-08-09 | 2022-08-09 | Ultrasonic wave level gauge calibrating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222090293.XU CN218566643U (en) | 2022-08-09 | 2022-08-09 | Ultrasonic wave level gauge calibrating device |
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| CN117928694A (en) * | 2024-01-24 | 2024-04-26 | 淮安市计量测试中心 | Reflective liquid level meter verification system and method based on Internet of things |
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