A pontoon liquid level meter weighing type debugging device and method

Abstract

The present application relates to a kind of float liquid level gauge weighing type debugging device and method, including the bracket for being fixed with float liquid level gauge, weighing assembly is arranged in the bracket, the weighing assembly includes electronic scale and the conducting rod being arranged on electronic scale, the conducting rod is contacted with float from below and stretches into the inside of shell, base assembly for adjusting the height of electronic scale is also arranged in the bracket.The debugging device is simulated by setting bracket and using fine adjustment lifting base assembly in the bracket by adjusting lifting to simulate buoyancy, and the simulated buoyancy is transferred to float on conducting rod by weighing of precision electronic scale, to carry out float liquid level gauge calibration, this calibration mode is separated from liquid level, directly carries out dry measurement, and further by setting displacement monitoring device, the displacement degree of conducting rod after being stressed is monitored, the position deviation of float after being stressed is added to calibration, improve precision.

Description

Technical Field

[0001] This invention belongs to the field of liquid level gauge calibration technology, specifically relating to a weighing-type debugging device and method for a float liquid level gauge. Background Technology

[0002] A float level gauge typically consists of a housing and a float. A lever and a torsion tube are installed at the top of the float. The buoyancy force on the float causes the lever to move, which in turn causes the torsion tube to deform. A detection device transmits the deformation of the torsion tube as an electrical signal to obtain the liquid level measurement result. The rise and fall of the float level gauge during the deformation of the torsion tube is generally small and can be ignored under low-precision requirements. However, with long-term use, problems such as local deformation of the lever and non-linear deformation of the torsion tube may occur, requiring calibration.

[0003] In the calibration of float level gauges, the water calibration method is generally used. During calibration, the liquid level at each detection point must be converted into the water level according to the density of the medium used. After the liquid level at each detection point is converted, water is injected into the level gauge, and the water level is gradually raised from zero to the height of each detection point. The entire calibration process requires repeated injection and drainage of water in stages, which is not efficient. In addition, when calibrating float level gauges that have been installed at field control points, especially when the control points are at high locations, it is very inconvenient to provide water during the calibration process. Summary of the Invention

[0004] The purpose of this invention is to provide a weighing-type debugging device and method for a float level gauge in order to solve the above-mentioned problems.

[0005] The present invention achieves the above objectives through the following technical solutions: A weighing-type adjustment device for a float level gauge includes a bracket for fixing the float level gauge. The float level gauge includes a housing, a float, a lever, a torsion tube, and a detection device. A weighing component is disposed within the bracket. The weighing component includes an electronic scale and a transmission rod disposed on the electronic scale. The transmission rod extends from below into the housing and contacts the float. A base assembly for adjusting the height of the electronic scale is also disposed within the bracket. The bracket is further provided with a displacement monitoring device for recording the rise of the transmission rod after the electronic scale displays a reading.

[0006] As a further optimization of the present invention, the float level gauge also includes a connecting pipe disposed on the housing and a drain outlet disposed at the bottom, and a connecting rod disposed at the top of the float and movably connected to the lever.

[0007] As a further optimization of the present invention, the displacement monitoring device includes a controller and a photoelectric probe. The controller is electrically connected to the photoelectric probe and the electronic scale. The transmission rod is provided with a grating marker corresponding to the photoelectric probe. This solution specifically sets up a displacement monitoring device, which is used to monitor the degree of buoyancy of the buoy when the buoy is subjected to force.

[0008] As a further optimization of the present invention, the base assembly includes a base plate and a telescopic joint disposed on the base plate. The telescopic end of the telescopic joint is provided with a tray for mounting the electronic scale. The base plate is also provided with a column, and a worm gear is rotatably disposed on the top of the column. A worm gear that meshes with the worm gear is rotatably disposed on the telescopic joint. A threaded rod is provided at the bottom of the tray. The worm gear has a threaded groove corresponding to the threaded rod. This solution allows the electronic scale to rise slightly by specifically arranging the base assembly, so as to apply pressure to the transmission rod.

[0009] As a further optimization of the present invention, the base plate is provided with a horizontal adjustment component to ensure that the force applied upward by the electronic scale is in the vertical direction.

[0010] As a further optimization of the present invention, the bottom of the transmission rod is provided with a base and the top is provided with a threaded structure, which is connected and fixed to the threaded hole provided at the center of the bottom of the float. This solution proposes a connection structure between the transmission rod and the float. This solution is connected to the float through the threaded structure to prevent slippage and displacement when an upward force is applied.

[0011] As a further optimization of the present invention, a shaft is provided at the top of the guide rod, and a rotating sleeve is rotatably connected to the outside of the shaft. A support rod is rotatably provided on the surface of the rotating sleeve. The axis of rotation of the support rod is perpendicular to the support rod and along the radial direction of the rotating sleeve. A first helical gear is provided at the top of the shaft, and a second helical gear is provided at the end of the shaft. A first groove and a second groove are respectively provided on the upward surface of the support rod for engaging with adjacent support rods when the support rod rotates horizontally. This solution proposes another contact method between the guide rod and the float, which is applied to floats without screw holes at the bottom. The diameter of the support surface for the float is increased by extending the support rod.

[0012] As a further optimization of the present invention, the support rod is also provided with a limiting mechanism for clamping the buoy when in contact with it. This mechanism includes a limiting post slidably mounted on the support rod, a hinged rod rotatably mounted inside the support rod, and a pressure rod extending out of the support rod at the non-rotating end of the hinged rod. The lower surface of the support rod is provided with several first ratchet teeth, and the upper surface away from the pressure rod is provided with second ratchet teeth. The hinged rod passes through the bottom slide of the limiting post, and the slide is provided with pawls corresponding to the first and second ratchet teeth respectively. The limiting post is pushed towards the pressure rod by a spring fitted on the hinged rod. This solution further provides a limiting post to prevent the buoy from slipping on the support rod.

[0013] To apply the aforementioned debugging device, this invention also proposes a debugging method based on the aforementioned float level gauge weighing-type debugging device, including... S1: Connect the bracket to the float level gauge so that the top of the transmission rod contacts the float and the bottom contacts the electronic scale, and then fix the bracket to the housing of the float level gauge; S2: Adjust the height of the electronic scale slightly through the base assembly. Record the initial height of the electronic scale when it shows a reading. Continuously adjust the height of the electronic scale so that it applies a supporting force to the bottom of the float through the transmission rod to simulate buoyancy. Record the real-time reading of the detection device and the change in the height of the electronic scale. S3: Obtain the height change of the float based on the height change of the electronic scale, obtain the simulated liquid level height based on the height change of the float and the buoyancy of the float, and correct the real-time reading of the detection device based on the simulated liquid level height.

[0014] The beneficial effects of this invention are as follows: This invention uses a bracket with a finely adjustable base assembly within it to simulate buoyancy by adjusting the lifting height. The simulated buoyancy is then measured using a precision electronic scale and transmitted to the float via a transmission rod for calibration of the float level gauge. This calibration method is independent of the liquid level and performs direct dry measurement. Furthermore, by incorporating a displacement monitoring device, the displacement of the transmission rod under stress is monitored, and the positional shift of the float after being stressed is included in the calibration, thereby improving accuracy. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of Embodiment 1 of the present invention; Figure 2 This is the invention Figure 1 Enlarged view of the structure of section A in the middle; Figure 3 This is a schematic diagram of the conductive rod structure of Embodiment 2 of the present invention; Figure 4 This is the invention Figure 3 Top view; Figure 5 This is the invention Figure 3 Cross-section Figure 1 ; Figure 6 This is the invention Figure 3 Cross-section Figure 2 ; Figure 7 This is a schematic diagram of the support rod in Embodiment 3 of the present invention; Figure 8 This is the invention Figure 7 Enlarged view of section B; In the diagram: 1. Bracket; 11. Fixing component; 12. Controller; 13. Photoelectric probe; 14. Grating marker; 2. Base assembly; 21. Base plate; 22. Horizontal adjustment component; 23. Telescopic pair; 24. Tray; 25. Column; 26. Threaded rod; 27. Worm gear; 28. Worm wheel; 3. Weighing assembly; 31. Electronic scale; 32. Conducting rod; 33. Base; 34. Rotating sleeve; 35. Shaft; 36. Damping bearing; 37. First helical gear 38. Wheel; 39. Second helical gear; 310. Support rod; 311. First groove; 312. Second groove; 4. Float level gauge; 41. Housing; 42. Drain outlet; 43. Connecting pipe; 44. Float; 45. Connecting rod; 46. Lever; 47. Torque tube; 48. Detection device; 5. Limiting mechanism; 51. Hinge rod; 52. Pressure rod; 53. First ratchet; 54. Second ratchet; 55. Limiting post; 56. Spring; 57. Pawl. Detailed Implementation

[0016] The present application will now be described in further detail with reference to the accompanying drawings. It should be noted that the following specific embodiments are only used to further illustrate the present application and should not be construed as limiting the scope of protection of the present application. Those skilled in the art can make some non-essential improvements and adjustments to the present application based on the above application content.

[0017] Example 1

[0018] like Figure 1-2 As shown, a weighing-type debugging device for a float level gauge includes a bracket 1 for fixing the float level gauge 4. A fixing member 11 is provided on the bracket 1, which is clamped to the outer surface of the float level gauge 4 to achieve a fixing effect. The float level gauge 4 includes a housing 41, a float 44, a lever 46, a torsion tube 47, and a detection device 48. A weighing component 3 is provided inside the bracket 1. The weighing component 3 includes an electronic scale 31 and a transmission rod 32 provided on the electronic scale 31. The transmission rod 32 extends into the housing 41 from below and contacts the float 44. A base assembly 2 for adjusting the height of the electronic scale 31 is also provided inside the bracket 1. The bracket 1 is also provided with a displacement monitoring device for recording the rise of the transmission rod 32 after the electronic scale 31 shows a reading.

[0019] This solution uses a bracket 1 and a base assembly 2 with fine-tuning lifting mechanism within the bracket 1 to simulate buoyancy by adjusting the lifting height. The simulated buoyancy is then measured by a precision electronic scale 31 and transmitted to the float 44 via a transmission rod 32 for level gauge calibration. This calibration method is independent of the liquid level and performs direct dry measurement. Furthermore, a displacement monitoring device is installed to monitor the displacement of the transmission rod 32 after being subjected to force, and the positional shift of the float 44 after being subjected to force is added to the calibration to improve accuracy.

[0020] It should be noted that the electronic scale 31 displays a reading because the transmission rod 32 is in contact with the float 44 and is under force. The situation where the electronic scale 31 displays a reading due to the weight of the transmission rod 32 itself can be eliminated by the tare function of the electronic scale 31.

[0021] The float level gauge 4 also includes a connecting pipe 43 on the housing 41 and a drain port 42 at the bottom. The top of the float 44 is provided with a connecting rod 45 that is movably connected to the lever 46. The drain port 42 at the bottom of the float level gauge 4 facilitates the entry of the transmission rod 32.

[0022] The displacement monitoring device includes a controller 12 and a photoelectric probe 13. The controller 12 is electrically connected to the photoelectric probe 13 and the electronic scale 31. A grating marker 14 corresponding to the photoelectric probe 13 is set on the transmission rod 32. This scheme specifically sets up a displacement monitoring device, which is used to monitor the degree of buoyancy of the float 44 when the float 44 is under force. This is beneficial to correct the influence of the slight rise and fall of the float 44 on the reading.

[0023] In this embodiment, the base assembly 2 includes a base plate 21 and a telescopic joint 23 disposed on the base plate 21. The telescopic end of the telescopic joint 23 is provided with a tray 24 for mounting the electronic scale 31. A column 25 is also disposed on the base plate 21, with a worm gear 28 rotatably disposed on the top of the column 25. A worm 27, meshing with the worm gear 28, is rotatably disposed on the telescopic joint 23. A threaded rod 26 is disposed at the bottom of the tray 24. A threaded groove corresponding to the threaded rod 26 is formed in the worm gear 28. This base assembly 2 achieves a first-stage reduction speed through the worm gear 28 and worm 27, and a second-stage reduction speed through the threaded rod 26 and threaded groove, allowing for minute adjustment of the height of the electronic scale 31 to achieve the desired reading. Furthermore, a horizontal adjustment component 22 is disposed on the base plate 21 to ensure that the upward force applied by the electronic scale is vertical.

[0024] The bottom of the transmission rod 32 is provided with a base 33 and the top is provided with a threaded structure, which is connected and fixed to the threaded hole located at the center of the bottom of the float 44. This solution proposes a connection structure between the transmission rod 32 and the float 44. This solution is connected to the float 44 through the threaded structure to prevent slippage and displacement when an upward force is applied.

[0025] To apply the aforementioned debugging device, this invention also proposes a debugging method based on the aforementioned float level gauge weighing-type debugging device, including... S1: Connect bracket 1 to float level gauge 4 so that the top of the transmission rod 32 contacts float 44 and the bottom contacts electronic scale 31. Then fix bracket 1 to housing 41 of float level gauge 4. In this embodiment, transmission rod 32 enters from drain port 42 at the bottom of housing 41 and is screwed to float 44 at the top through threaded structure. S2: The height of the electronic scale 31 is slightly adjusted by the base assembly 2. When the electronic scale 31 shows a reading, the initial height of the electronic scale 31 is recorded. The height of the electronic scale 31 is continuously adjusted so that the electronic scale 31 applies a supporting force to the bottom of the float 44 through the transmission rod 32 to simulate buoyancy. The real-time reading of the detection device 48 and the change in the height of the electronic scale 31 are recorded. Specifically, the worm gear 27 is rotated to drive the worm wheel 28 to rotate. The worm wheel 28 further drives the threaded rod 26 to rise, which in turn drives the tray 24 to rise slightly. S3: The height change of the float 44 is obtained based on the height change of the electronic scale 31. This process can eliminate the error caused by the float 44 rising due to structural deformation and loosening when subjected to buoyancy. The simulated liquid level height is obtained based on the height change of the float 44 and the buoyancy force on the float 44. The buoyancy force on the float 44 can be obtained from the reading of the electronic scale 31. The submersion degree of the float 44 can be calculated by the magnitude of the buoyancy force. Since the float 44 itself rises slightly, the liquid level height at this time can be calculated. The real-time reading of the detection device 48 is corrected based on the simulated liquid level height.

[0026] Example 2

[0027] Unlike Embodiment 1, this embodiment addresses the situation where the bottom of the float 44 lacks a threaded hole, such as... Figure 3-6 As shown, specifically, the top of the transmission rod 32 in this embodiment is provided with a shaft 35, and a damping bearing 36 is provided on the outside of the shaft 35. A rotating sleeve 34 is rotatably connected through the damping bearing 36. A support rod 39 is rotatably provided on the surface of the rotating sleeve 34. The axis of rotation of the support rod 39 is perpendicular to the support rod 39 and along the radial direction of the rotating sleeve 34. A first helical gear 37 is provided on the top of the shaft 35, and a second helical gear 38 is provided at the end of the shaft. A first groove 310 and a second groove 311 are respectively provided on the upward surface of the support rod 39 for engaging with the adjacent support rod 39 when the support rod 39 rotates horizontally.

[0028] In this embodiment, a support rod 39 is provided at the top of the transmission rod 32 to increase the diameter of the contact area between the transmission rod 32 and the bottom of the float 44, which helps to prevent slippage with the float 44 under stress. Although the lateral arrangement of the support rod 39 increases stability, its larger diameter makes it difficult for the transmission rod 32 to enter the housing 41 through the drain port 32, requiring disassembly and assembly of the housing 41, which is cumbersome. To solve this problem, this embodiment rotates the support rod 39 to the top of the rotating sleeve 34. By rotating the rotating sleeve 34, the first helical gear 37 on the shaft 35 drives the second helical gear 38 to rotate, thereby rotating the support rod 39 from vertical to horizontal, and they overlap through grooves to improve stability. Figure 3 As shown, the first groove 310 engages with the second groove 311 of the adjacent support rod 39, making the upper surface of the support rod 39 flush.

[0029] Example 3

[0030] Based on Embodiment 2, this embodiment further provides a limiting mechanism 5 on the support rod 39, which is used to clamp the float 44 when in contact with it. It includes a limiting post 55 slidably disposed on the support rod 39, a hinge rod 51 rotatably disposed inside the support rod 39, and a pressure rod 52 extending out of the support rod 39 at the non-rotating end of the hinge rod 51. The lower surface of the support rod 39 is provided with a plurality of first ratchet teeth 53, and the upper surface away from the pressure rod 52 is provided with second ratchet teeth 54. The hinge rod 51 passes through the bottom slide of the limiting post 55, and the slide is provided with pawls 57 corresponding to the first ratchet teeth 53 and the second ratchet teeth 54 respectively. The limiting post 55 is pushed towards the pressure rod 52 by a spring 56 sleeved on the hinge rod 51.

[0031] Specifically, in use, such as Figure 7-8 As shown, the hinge rod 51 can be rotated upward by a torsion spring, causing the pressure rod 52 to extend. At this time, the limiting post 55 is pushed to the outside and is locked by the second ratchet 54. When the transmission rod 32 enters the housing 41 and the support rod 39 unfolds to a horizontal position, the float 44 contacts the pressure rod 52 and presses the hinge rod 51 horizontally. The second ratchet 54 releases the limiting post 55, which is pushed towards the float 44 by the spring 56 and clamped on the side wall of the float 44. It is locked by the pawl 57 and the first ratchet 53. When the support rod 39 leaves the float 44, the hinge rod 51 rotates, causing the first ratchet 53 to release the limiting post 55. The pawl 57 is a prior art device, which is movably set at the bottom of the limiting post 55 and can move unidirectionally along the ratchet through an elastic component.

[0032] The embodiments described above are merely examples of several implementations of the present invention, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements all fall within the scope of protection of the present invention.

Claims

1. A weighing-type adjustment device for a float level gauge, characterized in that: The system includes a bracket (1) for fixing a float level gauge (4), the float level gauge (4) including a housing (41), a float (44), a lever (46), a torsion tube (47), and a detection device (48). A weighing assembly (3) is provided inside the bracket (1), the weighing assembly (3) including an electronic scale (31) and a guide rod (32) provided on the electronic scale (31). The guide rod (32) extends into the housing (41) from below and contacts the float (44). A base assembly (2) for adjusting the height of the electronic scale (31) is also provided inside the bracket (1). The bracket (1) is also provided with a displacement monitoring device for recording the rise of the guide rod (32) after the electronic scale (31) has a reading. The displacement monitoring device includes a controller (12) and a photoelectric probe (13). The controller (12) is electrically connected to the photoelectric probe (13) and the electronic scale (31). The transmission rod (32) is provided with a grating marker (14) corresponding to the photoelectric probe (13). The base assembly (2) includes a base plate (21) and a telescopic pair (23) disposed on the base plate (21). The telescopic end of the telescopic pair (23) is provided with a tray (24) for mounting an electronic scale (31). The base plate (21) is also provided with a column (25). A worm gear (28) is rotatably disposed on the top of the column (25). A worm (27) that meshes with the worm gear (28) is rotatably disposed on the telescopic pair (23). A threaded rod (26) is disposed at the bottom of the tray (24). A threaded groove corresponding to the threaded rod (26) is opened in the worm gear (28).

2. The float level gauge weighing type debugging device according to claim 1, characterized in that: The float level gauge (4) also includes a connecting pipe (43) on the housing (41) and a drain outlet (42) at the bottom. The top of the float (44) is provided with a connecting rod (45) that is movably connected to a lever (46).

3. The float level gauge weighing type debugging device according to claim 1, characterized in that: A horizontal adjustment component (22) is provided on the base plate (21).

4. The float level gauge weighing type debugging device according to claim 1, characterized in that: The bottom of the transmission rod (32) is provided with a base (33) and the top is provided with a threaded structure, which is connected and fixed to the threaded hole located at the center of the bottom of the float (44).

5. The float level gauge weighing type debugging device according to claim 1, characterized in that: The top of the guide rod (32) is provided with a shaft (35), and the shaft (35) is externally damped and rotatably connected to a rotating sleeve (34). The surface of the rotating sleeve (34) is rotatably provided with a support rod (39). The axis of rotation of the support rod (39) is perpendicular to the support rod (39) and along the radial direction of the rotating sleeve (34). The top of the shaft (35) is provided with a first helical gear (37), and the end of the shaft is provided with a second helical gear (38). The upward surface of the support rod (39) is provided with a first groove (310) and a second groove (311) for engaging with the adjacent support rod (39) when the support rod (39) rotates horizontally.

6. The float level gauge weighing type debugging device according to claim 5, characterized in that: The support rod (39) is also provided with a limiting mechanism (5), which is used to clamp the float (44) when in contact with the float (44). It includes a limiting post (55) slidably disposed on the support rod (39). A hinge rod (51) is rotatably disposed inside the support rod (39). A pressure rod (52) extending out of the support rod (39) is provided at the non-rotating end of the hinge rod (51). A plurality of first ratchet teeth (53) are provided on the lower surface of the support rod (39), and a second ratchet tooth (54) is provided on the upper surface away from the pressure rod (52). The hinge rod (51) passes through the bottom slide of the limiting post (55), and a pawl (57) corresponding to the first ratchet tooth (53) and the second ratchet tooth (54) is provided in the slide. The limiting post (55) is pushed towards the pressure rod (52) by a spring (56) sleeved on the hinge rod (51).

7. A debugging method for a float level gauge weighing-type debugging device based on any one of claims 1-6, characterized in that: include S1: Connect the bracket (1) to the float level gauge (4) so ​​that the top of the transmission rod (32) contacts the float (44) and the bottom contacts the electronic scale (31). Then fix the bracket (1) to the housing (41) of the float level gauge (4). S2: Adjust the height of the electronic scale (31) slightly through the base assembly (2), record the initial height of the electronic scale (31) when the electronic scale (31) shows a reading, and continuously adjust the height of the electronic scale (31) so that the electronic scale (31) applies a supporting force to the bottom of the float (44) through the transmission rod (32) to simulate buoyancy, and record the real-time reading of the detection device (48) and the change in the height of the electronic scale (31); S3: The height change of the float (44) is obtained based on the height change of the electronic scale (31), the simulated liquid level height is obtained based on the height change of the float (44) and the buoyancy of the float (44), and the real-time reading of the detection device (48) is corrected based on the simulated liquid level height.

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