CN115165046A

CN115165046A - Radar level gauge calibration device

Info

Publication number: CN115165046A
Application number: CN202210665905.5A
Authority: CN
Inventors: 杨翔; 刘信; 胡洋
Original assignee: Anhui Wesike Automation Instrument Co ltd
Current assignee: Anhui Wesike Automation Instrument Co ltd
Priority date: 2022-06-13
Filing date: 2022-06-13
Publication date: 2022-10-11

Abstract

The invention discloses a radar liquid level meter calibration device which comprises a shell, wherein a liquid inlet pipe is fixedly connected to the top of the shell, a radar liquid level meter is fixedly installed at the top of the shell and positioned on one side of the liquid inlet pipe, a probe is fixedly connected to the tail end of the bottom of the radar liquid level meter and extends into the shell, a calibration box is fixedly installed on the side wall of the shell, a motor is fixedly connected to the top of the calibration box, and an anti-splashing mechanism is arranged on the inner top wall of the shell. According to the invention, the accurate recording of the height of the liquid level of the added liquid is realized through the floating calibration mechanism, the stable calibration effect of the swaying liquid level is achieved, and the problem of large measurement error caused by swaying of the liquid level in the liquid adding process in the prior art is solved. Meanwhile, the radar liquid level meter is synchronously opened through the matching arrangement among the threaded rod, the threaded sleeve, the conductive block and the conductive seat, the problem that the internal liquid level is difficult to observe is solved, the measurement efficiency is improved, and the measurement precision is ensured.

Description

Radar level gauge calibration device

Technical Field

The invention relates to the technical field of metering and measuring devices, in particular to a radar liquid level meter calibration device.

Background

The radar liquid level meter has the working principle that a measuring instrument based on the time travel principle is adopted, radar waves run at the speed of light, the running time can be converted into a level signal through electronic components, high-frequency pulses sent by a probe are transmitted in space at the speed of light, and when the pulses meet the surface of a material and are reflected, the pulses are received by a receiver in the instrument, so that distance signals are converted into the level signal.

In order to guarantee the accuracy when using, present radar level gauge need mark the radar level gauge, and present radar level gauge calibration device has following technical defect when using: the liquid level rocks great behind the filler at every turn, leads to the liquid level actual height inaccurate to lead to calibration error great, meanwhile, along with liquid level's increase during the filler, liquid splashes to the radar probe, leads to the measuring result to produce great deviation.

Disclosure of Invention

The invention aims to solve the problems in the prior art, and provides a calibration device for a radar liquid level meter.

In order to achieve the purpose, the invention adopts the following technical scheme:

a radar liquid level meter calibration device comprises a shell, wherein a liquid inlet pipe is fixedly connected to the top of the shell, a radar liquid level meter is fixedly mounted at the top of the shell and located on one side of the liquid inlet pipe, a probe is fixedly connected to the bottom end of the radar liquid level meter and extends into the shell, a calibration box is fixedly mounted on the side wall of the shell, a motor is fixedly connected to the top of the calibration box, an anti-splashing mechanism is arranged on the inner top wall of the shell, two limiting grooves are symmetrically formed in one side, close to the calibration box, of the inner wall of the shell, and a floating calibration mechanism is arranged inside the limiting grooves;

the utility model discloses a floating calibration mechanism, including two spacing inslot portions, the equal fixedly connected with of one end that the spacing groove was kept away from to the movable block floats the cover, the equal fixed mounting of inner wall that floats the cover has float the piece, and is adjacent the mounting groove has all been seted up to the lateral wall that floats the cover, the inside fixed mounting of mounting groove has the elasticity vaulting pole, the equal fixedly connected with piezoceramics in end of elasticity vaulting pole, the equal fixed connection in end of piezoceramics is on the inner wall of mounting groove, the other end of movable block is equipped with showy touching mechanism.

Preferably, the floating touch mechanism comprises a magnetic support rod fixedly connected to the movable block and far away from the tail end of the floating sleeve, a partition plate is fixedly mounted on the side wall of the shell along the vertical direction, the partition plate divides the calibration box from the shell, magnetic movable seats are arranged on the magnetic support rod and are located on the symmetrical sides of the partition plate, conductive seats are fixedly mounted on the side wall of the magnetic movable seat far away from the partition plate, and a liquid level floating height detection mechanism is arranged on the side of the partition plate close to the calibration box.

Preferably, it still includes the terminal threaded rod of fixed mounting at motor output shaft to float touching mechanism, the thread bush has been cup jointed to the upper end screw thread of threaded rod, the both sides that are located the threaded rod of thread bush all run through and install the slide bar, one side lateral wall fixed mounting that the thread bush is close to the baffle has the fagging, the diapire fixedly connected with conducting block of fagging.

Preferably, the liquid level floating height detection mechanism comprises a conductive contact fixedly mounted on the right side of the bottom wall of the magnetic movable seat, the conductive contact is tightly attached to the partition plate, and the partition plate is made of non-magnetic metal with good conductive performance, specifically copper or zinc.

Preferably, the anti-splashing mechanism comprises a rotating shaft fixedly connected to the inner top wall of the shell, the rotating shaft is located between the liquid inlet pipe and the radar liquid level meter, the anti-splashing plate is rotatably mounted at the lower end of the rotating shaft, an electromagnet is fixedly mounted on the inner top wall of the shell, and the electromagnet is located between the rotating shaft and the liquid inlet pipe.

Preferably, an elastic telescopic sleeve is fixedly installed on the bottom wall of the electromagnet, a spring is arranged inside the elastic telescopic sleeve, the top end of the spring is fixedly installed on the electromagnet, a permanent magnet is fixedly connected to the bottom end of the spring, the permanent magnet is fixedly installed on the splash shield, and the electromagnet and the permanent magnet are the same in magnetism.

Preferably, the piezoelectric ceramic is electrically connected with the motor; the conductive contact and the partition plate are electrically connected with the electromagnet.

Compared with the prior art, the invention provides a radar level gauge calibration device, which has the following beneficial effects:

1. according to the invention, the liquid level is accurately measured through the floating calibration mechanism, and the accurate recording of the height of the liquid level of the added liquid is realized through the matching arrangement among the floating sleeve, the mounting groove, the piezoelectric ceramic, the floating piece and the elastic support rod, so that the effect of stably calibrating the shaking liquid level is achieved, and the problem of large measurement error caused by liquid level shaking in the liquid adding process in the prior art is solved.

2. According to the invention, the precise recording of the measured liquid level is realized through the floating touch mechanism, and the synchronous opening of the radar liquid level meter is realized through the matching arrangement of the threaded rod, the threaded sleeve, the conductive block and the conductive seat, so that the automatic opening of the liquid level measurement when the liquid level is in a standing state is realized, the problem that the internal liquid level is difficult to observe is solved, the measurement efficiency is improved, and the measurement precision is ensured.

3. According to the invention, the floating calibration mechanism is used for accurately measuring different liquid levels, and the magnetic movable seat is driven to synchronously move upwards by floating the magnetic support rod to different degrees in different liquid levels, so that the detection result of the liquid level floating height detection mechanism is transmitted to the anti-splashing mechanism, and the synchronous opening of the anti-splashing mechanism is ensured.

4. According to the invention, the liquid splashing in the continuous material adding process can be effectively reduced through the splashing prevention mechanism, meanwhile, the rotation of the splashing prevention plate is realized through the matching arrangement of the electromagnet, the elastic telescopic sleeve, the spring, the permanent magnet and the splashing prevention plate, the synchronous rotation of the splashing prevention plate is realized when different liquid level heights are reached, the splashing prevention effect of the splashing prevention plate is obviously improved, and the measurement accuracy of the radar liquid level meter is further enhanced.

Drawings

FIG. 1 is a schematic perspective view of the present invention;

FIG. 2 is a schematic view of the internal cross-sectional three-dimensional structure of the housing of the present invention;

FIG. 3 is a schematic perspective view of the floating calibration mechanism of the present invention;

FIG. 4 is a schematic cross-sectional internal view of the housing of the present invention;

FIG. 5 is an enlarged view of the structure at A in FIG. 4 according to the present invention;

FIG. 6 is an enlarged view of the structure at B in FIG. 4 according to the present invention;

FIG. 7 is an enlarged view of the structure at C in FIG. 4 according to the present invention.

In the figure: 1. a housing; 2. a liquid inlet pipe; 3. a radar level gauge; 31. a probe; 4. a calibration box; 5. a motor; 51. a threaded rod; 52. a threaded sleeve; 53. a slide bar; 54. a supporting plate; 55. a conductive block; 6. a limiting groove; 7. a movable block; 8. a floating sleeve; 81. mounting grooves; 82. piezoelectric ceramics; 9. a float member; 10. an elastic stay bar; 11. a magnetic stay bar; 12. a partition plate; 13. a magnetic movable seat; 131. a conductive contact; 132. a conductive seat; 14. a splash shield; 141. a rotating shaft; 142. an electromagnet; 143. an elastic telescopic sleeve; 144. a spring; 145. and a permanent magnet.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like, are used in the orientations and positional relationships indicated in the drawings, which are based on the orientations and positional relationships indicated in the drawings, and are used for convenience of description and simplicity of description, but do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.

Example one

Referring to fig. 1-7, a radar level gauge calibration device, a housing 1, a liquid inlet pipe 2 is fixedly connected to the top of the housing 1, a liquid to be measured is firstly added into the housing 1 through the liquid inlet pipe 2 before liquid level measurement starts, a radar level gauge 3 is fixedly installed at the top of the housing 1 and at one side of the liquid inlet pipe 2, a probe 31 is fixedly connected to the bottom end of the radar level gauge 3 and extends into the housing 1, a calibration box 4 is fixedly installed on the side wall of the housing 1, a motor 5 is fixedly connected to the top of the calibration box 4, an anti-splash mechanism is arranged on the inner top wall of the housing 1, two limit grooves 6 are symmetrically arranged on one side of the inner wall of the housing 1, which is close to the calibration box 4, and a floating calibration mechanism is arranged inside the limit grooves 6;

the floating calibration mechanism comprises a movable block 7 movably installed inside two limiting grooves 6, the movable block 7 is far away from the equal fixedly connected with floating sleeve 8 at one end of the limiting groove 6, the inner wall of the floating sleeve 8 is fixedly provided with a floating part 9, the liquid level continuously rises along with the continuous addition of liquid, under the action of liquid buoyancy, the floating sleeve 8 and the floating part 9 continuously rise, the movable block 7 is driven to rise along the inside of the limiting groove 6, a mounting groove 81 is formed in the side wall of each adjacent floating sleeve 8, an elastic support rod 10 is fixedly installed in the inside of the mounting groove 81, the terminal equal fixedly connected with piezoelectric ceramics 82 of the elastic support rod 10 is fixedly connected onto the inner wall of the mounting groove 81, after the liquid is added, the liquid level continuously shakes, the floating sleeve 8 swings on the upper end of the liquid level, the elastic support rod 10 deforms along with the side wall, the piezoelectric ceramics 82 at the two ends of the elastic support rod 10 generate piezoelectric current, after the liquid level is static, the floating sleeve 8 tends to be stable, the liquid level does not deform, the piezoelectric ceramics 82 disappears, the other end of the floating sleeve is accurately calibrated by the floating sleeve 9, the floating measurement of the floating sleeve, and the floating sleeve 9, and the floating measurement of the floating sleeve is accurately calibrated liquid level.

Example two

As shown in fig. 1 to 7, this embodiment is substantially the same as embodiment 1, preferably, the floating touch mechanism includes a magnetic support rod 11 fixedly connected to the end of the movable block 7 far from the floating sleeve 8, a partition plate 12 is fixedly installed on the side wall of the housing 1 along the vertical direction, the partition plate 12 separates the calibration box 4 from the housing 1, magnetic movable seats 13 are installed on the magnetic support rod 11 on the symmetrical sides of the partition plate 12, a conductive seat 132 is fixedly installed on the side wall of the magnetic movable seat 13 far from the partition plate 12, and a liquid level floating height detection mechanism is installed on the side of the partition plate 12 close to the calibration box 4, so as to drive the movable block 7 and the magnetic support rod 11 to move up synchronously with the rise of the liquid level, and further drive the magnetic movable seats 13 to rise synchronously under the adsorption effect of magnetic force, and when the addition of the liquid stops, the magnetic movable seats 13 tends to be stable; the floating touch mechanism further comprises a threaded rod 51 fixedly installed at the tail end of an output shaft of the motor 5, a threaded sleeve 52 is sleeved at the upper end of the threaded rod 51 in a threaded sleeve mode, sliding rods 53 are installed on two sides, located on the threaded rod 51, of the threaded sleeve 52, a supporting plate 54 is fixedly installed on one side wall, close to the partition plate 12, of the threaded sleeve 52, a conductive block 55 is fixedly connected to the bottom wall of the supporting plate 54, when piezoelectric ceramics 82 in the floating calibration mechanism do not generate piezoelectric current any more, the motor 5 is started to drive the threaded rod 51 to rotate, under the limiting effect of the sliding rods 53, the threaded sleeve 52 moves downwards along the threaded rod 51, the supporting plate 54 and the conductive block 55 move downwards synchronously, the conductive block 55 and the conductive block 132 on the side wall of the magnetic movable seat 13 are contacted and electrified, the radar liquid level gauge 3 is started at the moment, accurate recording of the liquid level is achieved through the floating touch mechanism, meanwhile, synchronous starting of the radar liquid level gauge 3 is achieved through matching setting among the threaded sleeve 51, the threaded sleeve 52, the conductive block 55 and the conductive block 132, the synchronous starting of the radar liquid level gauge is achieved, the automatic starting of the liquid level gauge when the liquid level is in a standing state is achieved, the problem that the liquid level is difficult to observe is solved, the liquid level, the efficiency is improved, and the measuring accuracy is guaranteed.

EXAMPLE III

As shown in fig. 1 to 7, this embodiment is substantially the same as embodiment 1, and preferably, the liquid level floating height detection mechanism includes a conductive contact 131 fixedly installed on the right side of the bottom wall of the magnetic movable seat 13, the conductive contact 131 is tightly attached to the partition 12, and as the magnetic movable seat 13 slides and rises, the resistance of the access circuit of the partition 12 changes through the energized position of the conductive contact 131 and the partition 12, and the current magnitude at this time indicates the liquid level height, so as to realize accurate measurement of the liquid level floating height, and the partition 12 with this current magnitude is set as a non-magnetic metal with good conductivity, specifically one of copper and zinc, so that the contact energization between the partition 12 and the conductive contact 131 is ensured while the magnetic movable seat 13 can be driven by the magnetic support rod 11 to rise.

Example four

As shown in fig. 1 to 7, in the present embodiment, basically the same as that of embodiment 1, preferably, the anti-spatter mechanism includes a rotating shaft 141 fixedly connected to the inner top wall of the housing 1, the rotating shaft 141 is located between the liquid inlet pipe 2 and the radar level gauge 3, the lower end of the rotating shaft 141 is rotatably provided with the anti-spatter plate 14, the inner top wall of the housing 1 is fixedly provided with an electromagnet 142, the electromagnet 142 is located between the rotating shaft 141 and the liquid inlet pipe 2, and the current magnitude of the circuit connected through the conductive contact 131 and the partition plate 12 is transmitted to the electromagnet 142, so that the anti-spatter plate 14 of the anti-spatter mechanism with different liquid level heights can be inclined to different degrees;

the bottom wall of the electromagnet 142 is fixedly provided with an elastic telescopic sleeve 143, a spring 144 is arranged inside the elastic telescopic sleeve 143, the top end of the spring 144 is fixedly arranged on the electromagnet 142, the bottom end of the spring 144 is fixedly connected with a permanent magnet 145, the permanent magnet 145 is fixedly arranged on the splash shield 14, the electromagnet 142 and the permanent magnet 145 have the same magnetism, after the electromagnet 142 is opened, the permanent magnet 145 and the splash shield 14 are enabled to move away from one side of the electromagnet 142 under the action of the magnetic repulsion force of the electromagnet, so that the permanent magnet 145 and the splash shield 14 extend to be clockwise rotated along the rotating shaft 141, when the liquid level is higher, the splash shield 14 rotates obliquely at a larger angle, so that the splashed liquid collides with the bottom wall of the splash shield 14, the liquid splashing prevention effect is improved, the liquid is prevented from splashing onto the probe 31, the continuous liquid splashing in the material adding process can be effectively reduced through a splashing prevention mechanism, meanwhile, the rotation of the splash shield 14 is realized through the matching arrangement among the electromagnet 142, the elastic telescopic sleeve 143, the spring 144, the permanent magnet 145 and the splash shield 14, the synchronous rotation of the splash prevention mechanism is obviously improved, and the radar level measurement accuracy of the radar is further improved.

EXAMPLE five

As shown in fig. 1 to 7, in this embodiment, basically the same as embodiment 1, preferably, the piezoelectric ceramic 82 is electrically connected to the motor 5, so as to ensure that the floating calibration mechanism is driven to be synchronously opened after the liquid is settled; the conductive contact 131 and the partition plate 12 are electrically connected with the electromagnet 142, so that the splash-proof mechanism is driven to rotate to different degrees when different liquid level heights are ensured, liquid is prevented from splashing to the probe 31, and the accuracy of liquid level measurement is improved.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.

Claims

1. The radar liquid level meter calibration device comprises a shell (1) and is characterized in that a liquid inlet pipe (2) is fixedly connected to the top of the shell (1), a radar liquid level meter (3) is fixedly mounted at the top of the shell (1) and located on one side of the liquid inlet pipe (2), the tail end of the bottom of the radar liquid level meter (3) extends to a probe (31) fixedly connected to the inside of the shell (1), a calibration box (4) is fixedly mounted on the side wall of the shell (1), a motor (5) is fixedly connected to the top of the calibration box (4), an anti-splashing mechanism is arranged on the inner top wall of the shell (1), two limiting grooves (6) are symmetrically formed in one side, close to the calibration box (4), of the inner wall of the shell (1), and a floating calibration mechanism is arranged inside each limiting groove (6);

the floating calibration mechanism comprises a movable block (7) movably mounted inside two limiting grooves (6), wherein the movable block (7) is away from the equal fixedly connected with floating sleeve (8) at one end of each limiting groove (6), the equal fixedly mounted inner wall of the floating sleeve (8) is provided with a floating part (9) and is adjacent to the side wall of the floating sleeve (8), an elastic supporting rod (10) is fixedly mounted inside the mounting groove (81), the equal fixedly connected with piezoelectric ceramic (82) at the tail end of the elastic supporting rod (10), the equal fixedly connected with piezoelectric ceramic (82) at the tail end of the piezoelectric ceramic (82) is fixedly connected to the inner wall of the mounting groove (81), and a floating touch mechanism is arranged at the other end of the movable block (71).

2. The radar liquid level gauge calibration device according to claim 1, wherein the floating touch mechanism comprises a magnetic stay bar (11) fixedly connected to a movable block (7) far from the end of the floating sleeve (8), a partition plate (12) is fixedly installed on the side wall of the housing (1) along the vertical direction, the partition plate (12) divides the calibration box (4) from the housing (1), a magnetic movable seat (13) is arranged on one side of the magnetic stay bar (11) which is located symmetrically with respect to the partition plate (12), a conductive seat (132) is fixedly installed on the side wall of the magnetic movable seat (13) far from the partition plate (12), and a liquid level floating height detection mechanism is arranged on one side of the partition plate (12) which is close to the calibration box (4).

3. The radar level gauge calibration device according to claim 1, wherein the floating touch mechanism further comprises a threaded rod (51) fixedly mounted at the tail end of the output shaft of the motor (5), a threaded sleeve (52) is sleeved on the upper end of the threaded rod (51) in a threaded manner, a sliding rod (53) is mounted on each of two sides of the threaded sleeve (52) located on the threaded rod (51) in a penetrating manner, a supporting plate (54) is fixedly mounted on one side wall of the threaded sleeve (52) close to the partition plate (12), and a conductive block (55) is fixedly connected to the bottom wall of the supporting plate (54).

4. The radar liquid level gauge calibration device according to claim 2, wherein the liquid level floating height detection mechanism comprises a conductive contact (131) fixedly installed on the right side of the bottom wall of the magnetic movable seat (13), the conductive contact (131) is tightly attached to the partition plate (12), and the partition plate (12) is made of a non-magnetic metal with good electrical conductivity, specifically, one of copper and zinc.

5. The radar liquid level gauge calibration device according to claim 4, wherein the anti-spattering mechanism comprises a rotating shaft (141) fixedly connected to the inner top wall of the housing (1), the rotating shaft (141) is located between the liquid inlet pipe (2) and the radar liquid level gauge (3), the lower end of the rotating shaft (141) is rotatably mounted with the anti-spattering plate (14), the inner top wall of the housing (1) is fixedly mounted with the electromagnet (142), and the electromagnet (142) is located between the rotating shaft (141) and the liquid inlet pipe (2).

6. The radar level gauge calibration device according to claim 5, wherein an elastic telescopic sleeve (143) is fixedly installed on the bottom wall of the electromagnet (142), a spring (144) is arranged inside the elastic telescopic sleeve (143), the top end of the spring (144) is fixedly installed on the electromagnet (142), the bottom end of the spring (144) is fixedly connected with a permanent magnet (145), the permanent magnet (145) is fixedly installed on the splash shield (14), and the electromagnet (142) and the permanent magnet (145) have the same magnetism.

7. The radar level gauge calibration device according to claim 1, wherein said piezoelectric ceramic (82) is electrically connected to the motor (5).

8. The radar level gauge calibration arrangement according to claim 4, wherein said electrically conductive contacts (131) and the partition (12) are electrically connected to an electromagnet (142).