A special measurement and calibration device for liquid level gauge

Abstract

The present invention belongs to the technical field of liquid level gauge calibration, and in particular, is a special metrological calibration device for liquid level gauges, comprising three legs, wherein the top ends of the three legs are fixedly connected to the same vertical adjustment mechanism, the legs are distributed in a circular array on the side of the vertical adjustment mechanism, a liquid control calibration mechanism is detachably installed in the vertical adjustment mechanism, an anti-shake support assembly is detachably provided on the outer side of the liquid control calibration mechanism, and the anti-shake support assembly is connected to the three legs, and the liquid control calibration mechanism will automatically flip over and maintain a vertical state after the liquid is injected. The present invention injects liquid into the liquid control calibration mechanism, and under the counterweight of the liquid, the vertical adjustment mechanism can keep the liquid control calibration mechanism in a vertical state on an uneven table surface, thereby ensuring that the liquid level in the measuring cup remains horizontal, and avoiding the situation where the liquid level is tilted and causes inaccurate calibration results.

Description

Technical Field

[0001] The present invention relates to the technical field of liquid level gauge calibration, and in particular to a special measurement and calibration device for liquid level gauges. Background Art

[0002] The liquid level meter needs to be calibrated before it is used in the factory to ensure its liquid level measurement accuracy. The measurement method is mainly to first record the current height of the liquid level, then measure it with the liquid level meter, and finally compare the values. If the value of the liquid level meter can match the recorded value, it means that the liquid level meter is good. In order to ensure the accuracy of the test results, it is necessary to continuously adjust the liquid level height and perform multiple value comparisons.

[0003] When calibrating the radar level meter, the calibration device needs to be installed in advance. During the calibration, due to the simple environment, it is impossible to provide a completely horizontal table to place the calibration device. If the angle of the calibration device deviates, it is easy to cause an error in the calibration of the radar level meter, affecting the calibration of the radar level meter. In addition, the existing calibration device has a single structure, which mainly adjusts the liquid level height by manually increasing or decreasing the amount of liquid. This cannot ensure the accuracy of the adjusted liquid level height. For this reason, a special metrological calibration device for level meters is proposed. Summary of the Invention

[0004] In order to solve the shortcomings in the prior art, the present invention proposes a special measurement and calibration device for a liquid level meter.

[0005] In order to achieve the above-mentioned purpose, the present invention adopts the following technical solutions: a special metrological calibration device for a liquid level gauge, comprising three legs, the top ends of the three legs being fixedly connected to the same vertical adjustment mechanism, the legs being distributed in a circular array on the side of the vertical adjustment mechanism, a liquid control calibration mechanism being detachably installed in the vertical adjustment mechanism, a detachable sleeve being provided on the outer side of the liquid control calibration mechanism with an anti-shake support assembly, the anti-shake support assembly being connected to the three legs, the liquid control calibration mechanism will automatically flip over and maintain a vertical state after liquid is injected, the anti-shake support assembly being used to maintain the vertical state of the liquid control calibration mechanism, and a clamping mechanism for clamping the liquid level gauge body being fixedly installed on the top of the liquid control calibration mechanism.

[0006] Preferably, the vertical adjustment mechanism includes an annular ring 1, the top ends of the three legs are fixedly connected to the outer side of the annular ring 1, an annular ring 2 is rollingly installed on the inner side of the annular ring 1, an annular ring 3 is rotatably installed on the inner side of the annular ring 2, an annular ring 4 is fixedly installed on the inner side of the annular ring 3, and the annular ring 4 is detachably mounted on the outer side of the liquid control calibration mechanism.

[0007] Preferably, two coaxially arranged rotating shafts 1 are fixedly installed on the outer side of the annular ring 2, and rollers are rotatably sleeved on the two annular rings 1. An annular groove 1 is opened on the inner side of the annular ring 1, and two rollers are rollingly installed in the annular groove 1. Two coaxially arranged rotating shafts 2 are fixedly installed on the outer side of the annular ring 3, and the two rotating shafts 2 pass through the annular ring 2 and are rotatably connected to the annular ring 2, and the rotating shafts 2 and the rotating shaft 1 are vertically distributed.

[0008] Preferably, the liquid control and verification mechanism includes a measuring cup, the annular ring is detachably mounted on the outside of the measuring cup, a supporting ring is fixedly mounted on the top of the measuring cup, a drain valve and a drain pipe are fixedly mounted through the bottom of the measuring cup, and the liquid control and verification mechanism also includes a syringe, and the drain pipe and the syringe are connected by a same hose.

[0009] Preferably, the clamping mechanism includes a rectangular plate fixedly mounted on the top of the supporting ring, four rectangular blocks distributed in a rectangular shape are fixedly mounted on the top of the rectangular plate, wherein the same guide rod is fixedly mounted between two of the rectangular blocks, and the same screw rod is rotatably mounted between the other two rectangular blocks, the sliding sleeve on the guide rod is provided with two sliders, the threaded sleeve on the screw rod is provided with two moving blocks, the slider and the moving block on the same side are fixedly mounted with the same horizontal plate, the bottoms of the two horizontal plates are fixedly mounted with a splint, one end of the screw rod is fixedly mounted with a handwheel, a circular level ruler is fixedly mounted on the top of the rectangular plate, a through hole is opened on the rectangular plate, and the through hole is coaxially arranged with the measuring cup.

[0010] Preferably, the screw rod is provided with two sections of threads with opposite rotation directions, the two moving blocks are respectively adapted to the threads with corresponding rotation directions, and the sides of the two clamping plates close to each other are both V-shaped.

[0011] Preferably, the anti-shake support assembly includes an open ring 1 that is detachably mounted on the outside of the measuring cup, an annular groove 2 is provided on the outside of the open ring 1, an open ring 2 is rotatably installed in the annular groove 2, both the open ring 1 and the open ring 2 are open, and a support mechanism is connected between the open ring 2 and the support leg.

[0012] Preferably, the support mechanism includes a damping telescopic rod, and the two ends of the damping telescopic rod are respectively hinged with a hinge block 1 and a hinge block 2, the hinge block 1 is rotatably connected to the corresponding support leg, and the hinge block 2 is rotatably connected to the open ring 2.

[0013] Preferably, a scale window is provided on the outside of the measuring cup.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] 1. The present invention injects liquid into the liquid control and verification mechanism. Under the counterweight of the liquid, the vertical adjustment mechanism can keep the liquid control and verification mechanism vertical on an uneven surface, thereby ensuring that the liquid level in the measuring cup remains level, avoiding the situation where the liquid level tilts and causes inaccurate verification results.

[0016] 2. The anti-shake support component can ensure that the measuring cup will not shake randomly even if the device is hit by external force during the calibration process, thereby ensuring stability during the calibration process;

[0017] 3. By setting up a clamping mechanism, the clamping and fixing of liquid level gauges of different sizes can be completed, making this device suitable for the calibration of liquid level gauges of various sizes. By sucking the liquid in the measuring cup with a syringe, the liquid level in the measuring cup can be accurately adjusted, thereby improving the accuracy and convenience of adjusting the liquid level. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the overall structure of a special measurement and calibration device for a liquid level gauge proposed by the present invention;

[0019] Figure 2 This is a structural diagram of a vertical adjustment mechanism in a special measurement and calibration device for a liquid level gauge proposed by the present invention;

[0020] Figure 3 This is a structural schematic diagram of the annular ring 2 in a special measurement and calibration device for a liquid level gauge proposed by the present invention;

[0021] Figure 4 This is a structural diagram of a control liquid calibration mechanism in a special measurement and calibration device for a liquid level gauge proposed by the present invention;

[0022] Figure 5 This is a structural diagram of a clamping mechanism in a special measurement and calibration device for a liquid level gauge proposed by the present invention;

[0023] Figure 6 This is a structural schematic diagram of an anti-shake support assembly in a special measurement and calibration device for a liquid level gauge proposed by the present invention;

[0024] Figure 7 This is a structural diagram of the support mechanism in a special measurement and calibration device for a liquid level gauge proposed by the present invention.

[0025] Figure: 1. Support leg; 2. Vertical adjustment mechanism; 21. Annular ring 1; 211. Annular groove 1; 22. Annular ring 2; 221. Rotating shaft 1; 222. Roller; 23. Annular ring 3; 231. Rotating shaft 2; 24. Annular ring 4; 3. Liquid control and calibration mechanism; 31. Measuring cup; 311. Support ring; 312. Scale window; 313. Drain pipe; 32. Drain valve; 33. Syringe; 34. Hose; 4. Clamping mechanism ; 41. Rectangular plate; 42. Rectangular block; 43. Guide rod; 44. Screw rod; 45. Moving block; 46. Slider; 47. Horizontal plate; 48. Handwheel; 49. Clamp; 410. Through hole; 411. Circular level; 5. Anti-shake support assembly; 51. Open ring one; 511. Annular groove two; 52. Open ring two; 53. Support mechanism; 531. Damping telescopic rod; 532. Articulated block one; 533. Articulated block two. DETAILED DESCRIPTION

[0026] The following will clearly and completely describe the technical solutions of the present invention in conjunction with the accompanying drawings. Obviously, the embodiments described are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0027] Please refer to Figure 1-Figure 7 The present invention provides a technical solution: a special metrological calibration device for a liquid level gauge, comprising three legs 1, the tops of the three legs 1 being fixedly connected with a same vertical adjustment mechanism 2, the legs 1 being distributed in a circular array on the side of the vertical adjustment mechanism 2, a liquid control calibration mechanism 3 being detachably installed in the vertical adjustment mechanism 2, an anti-shake support assembly 5 being detachably provided on the outer side of the liquid control calibration mechanism 3, the anti-shake support assembly 5 being connected to the three legs 1, the liquid control calibration mechanism 3 will automatically flip over and maintain a vertical state after liquid is injected, the anti-shake support assembly 5 is used to maintain the vertical state of the liquid control calibration mechanism 3, and a clamping mechanism 4 for clamping the liquid level gauge body is fixedly installed on the top of the liquid control calibration mechanism 3.

[0028] The vertical adjustment mechanism 2 includes an annular ring 21, and the top ends of the three legs 1 are fixedly connected to the outer side of the annular ring 21. An annular ring 22 is rollingly installed on the inner side of the annular ring 21, and an annular ring 3 23 is rotatably installed on the inner side of the annular ring 22. An annular ring 4 24 is fixedly installed on the inner side of the annular ring 3 23. The annular ring 4 24 is detachably mounted on the outer side of the liquid control verification mechanism 3.

[0029] Two coaxially arranged rotating shafts 221 are fixedly installed on the outer side of the annular ring 22, and rollers 222 are rotatably sleeved on the two annular rings 21. An annular groove 211 is opened on the inner side of the annular ring 21, and the two rollers 222 are both rollingly installed in the annular groove 211. Two coaxially arranged rotating shafts 231 are fixedly installed on the outer side of the annular ring 3 23, and the two rotating shafts 231 both penetrate the annular ring 22 and are rotatably connected to the annular ring 22. The rotating shafts 231 and the rotating shaft 1 221 are vertically distributed.

[0030] The liquid control and verification mechanism 3 includes a measuring cup 31, an annular ring 21 is detachably mounted on the outside of the measuring cup 31, a supporting ring 311 is fixedly mounted on the top of the measuring cup 31, a drain valve 32 and a drain pipe 313 are fixedly mounted through the bottom of the measuring cup 31, and the liquid control and verification mechanism 3 also includes a syringe 33, and a hose 34 is connected between the drain pipe 313 and the syringe 33.

[0031] Furthermore, by sucking the liquid in the measuring cup 31 through the syringe 33, the liquid level inside the measuring cup 31 can be accurately controlled without causing waste or leakage of the liquid.

[0032] The clamping mechanism 4 includes a rectangular plate 41 fixedly mounted on the top of the supporting ring 311, and four rectangular blocks 42 distributed in a rectangular shape are fixedly mounted on the top of the rectangular plate 41, wherein the same guide rod 43 is fixedly mounted between two of the rectangular blocks 42, and the same screw rod 44 is rotatably mounted between the other two rectangular blocks 42, two sliders 46 are slidingly sleeved on the guide rod 43, and two moving blocks 45 are threadedly sleeved on the screw rod 44, and the same horizontal plate 47 is fixedly mounted on the top of the slider 46 and the moving block 45 on the same side, and a splint 49 is fixedly mounted on the bottom of the two horizontal plates 47, a handwheel 48 is fixedly mounted on one end of the screw rod 44, and a circular level 411 is fixedly mounted on the top of the rectangular plate 41, and a through hole 410 is opened on the rectangular plate 41, and the through hole 410 is coaxially arranged with the measuring cup 31.

[0033] Furthermore, the circular level ruler 411 can be used to observe whether the rectangular plate 41 is in a horizontal state. Only when the rectangular plate 41 is in a horizontal state can the calibration of the liquid level meter body be more standardized.

[0034] The screw rod 44 is provided with two sections of threads with opposite rotation directions, and the two moving blocks 45 are respectively adapted to the threads with corresponding rotation directions. The two clamping plates 49 are both arranged in a V shape on the sides close to each other.

[0035] Furthermore, since the sides of the two clamping plates 49 that are close to each other are both arranged in a V-shape, the two clamping plates 49 can clamp liquid level gauge bodies of different sizes.

[0036] The anti-shake support assembly 5 includes an open ring 1 51 that is detachably mounted on the outside of the measuring cup 31. An annular groove 2 511 is provided on the outside of the open ring 1 51. An open ring 2 52 is rotatably installed in the annular groove 2 511. Both the open ring 1 51 and the open ring 2 52 are open, and a support mechanism 53 is connected between the open ring 2 52 and the support leg 1.

[0037] Furthermore, since both the open ring 1 51 and the open ring 2 52 are set to be open, it is convenient for the staff to observe the scale window 312 from the opening.

[0038] The supporting mechanism 53 includes a damping telescopic rod 531 , and the two ends of the damping telescopic rod 531 are respectively hinged with a hinge block 1 532 and a hinge block 2 533 . The hinge block 1 532 is rotatably connected to the corresponding support leg 1 , and the hinge block 2 533 is rotatably connected to the open ring 2 52 .

[0039] Furthermore, the damping telescopic rod 531 can be extended and retracted smoothly when subjected to a uniform external force, but when subjected to a sudden and violent external force, the damping telescopic rod 531 will not be extended and retracted smoothly. Since the damping telescopic rod 531 is rotatably connected to the support leg 1 and the open ring 2 52 through the hinge block 1 532 and the hinge block 2 533 respectively, the damping telescopic rod 531 can also be turned and extended accordingly during the process of following the measuring cup 31 to flip, ensuring that the three damping telescopic rods 531 can provide stable support for the open ring 1 51 and the open ring 2 52, and ensuring that the measuring cup 31 will not swing randomly when the device is bumped.

[0040] A scale window 312 is provided on the outside of the measuring cup 31 .

[0041] In this embodiment, when in use, the device is first placed on a table so that the bottoms of the three legs 1 are in contact with the table. Then, the liquid level gauge body is passed through the through hole 410. The hand wheel 48 is then manually cranked. The hand wheel 48 rotates and drives the screw 44 to rotate. The rotation of the screw 44 drives the two horizontal plates 47 to move closer to each other through the two moving blocks 45. The two horizontal plates 47 drive the two clamping plates 49 to move closer to each other and clamp the liquid level gauge body.

[0042] Liquid is then poured into the measuring cup 31 from the top opening. As the amount of liquid in the measuring cup 31 increases, its weight increases. Under the action of gravity, the measuring cup 31 rotates around the annular ring 4 24 and the annular ring 3 23, and the two second rotating shafts 231. The annular ring 1 21 drives the two rollers 222 to roll in the annular groove 1 211, so that the measuring cup 31 can remain in a vertical position.

[0043] As the measuring cup 31 drives the annular ring 22 and the annular ring 3 23 to flip, the open ring 1 51 and the open ring 2 52 will cause the three supporting mechanisms 53 to expand and contract to varying degrees. Furthermore, as the annular ring 22 rotates around the axis of the annular ring 1 21 , the measuring cup 31 will drive the open ring 1 51 to rotate around the axis of the open ring 2 52 . Alignment verification is then performed by observing the liquid level height on the scale window 312 and the liquid level height on the level gauge body.

[0044] The liquid in the measuring cup 31 is sucked by the syringe 33, and the liquid level height inside the measuring cup 31 is adjusted to the liquid level height on the liquid level meter body for multiple alignment checks, thereby completing the calibration of the liquid level meter body.

[0045] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. A special metrological calibration device for a liquid level gauge, comprising a support leg (1), characterized in that: The number of the legs (1) is three, and the top ends of the three legs (1) are fixedly connected to the same vertical adjustment mechanism (2). The legs (1) are distributed in a circular array on the side of the vertical adjustment mechanism (2). A liquid control calibration mechanism (3) is detachably installed in the vertical adjustment mechanism (2). An anti-shake support assembly (5) is detachably provided on the outer side of the liquid control calibration mechanism (3). The anti-shake support assembly (5) is connected to the three legs (1). After the liquid is injected, the liquid control calibration mechanism (3) will automatically turn over and maintain a vertical state. The anti-shake support assembly (5) is used to maintain the vertical state of the liquid control calibration mechanism (3). A clamping mechanism (4) for clamping the liquid level meter body is fixedly installed on the top of the liquid control calibration mechanism (3); The vertical adjustment mechanism (2) includes an annular ring 1 (21), the top ends of the three legs (1) are fixedly connected to the outer side of the annular ring 1 (21), an annular ring 2 (22) is rotatably mounted on the inner side of the annular ring 1 (21), an annular ring 3 (23) is rotatably mounted on the inner side of the annular ring 2 (22), an annular ring 4 (24) is fixedly mounted on the inner side of the annular ring 3 (23), and the annular ring 4 (24) is detachably mounted on the outer side of the liquid control and calibration mechanism (3); The liquid control and verification mechanism (3) includes a measuring cup (31), the annular ring (21) is detachably mounted on the outside of the measuring cup (31), a supporting ring (311) is fixedly mounted on the top of the measuring cup (31), and a drain valve (32) and a drain pipe (313) are fixedly mounted through the bottom of the measuring cup (31). The liquid control and verification mechanism (3) also includes a syringe (33), and a hose (34) is connected between the drain pipe (313) and the syringe (33).

2. A liquid level gauge dedicated measurement and calibration device according to claim 1, characterized in that: Two coaxially arranged rotating shafts (221) are fixedly installed on the outer side of the annular ring (22), and rollers (222) are rotatably sleeved on the two annular rings (21). An annular groove (211) is provided on the inner side of the annular ring (21), and the two rollers (222) are both rotatably installed in the annular groove (211). Two coaxially arranged rotating shafts (231) are fixedly installed on the outer side of the annular ring (23), and the two rotating shafts (231) both penetrate the annular ring (22) and are rotatably connected to the annular ring (22), and the rotating shafts (231) and the rotating shaft (221) are vertically distributed.

3. The liquid level gauge dedicated measurement and calibration device according to claim 1, characterized in that: The clamping mechanism (4) comprises a rectangular plate (41) fixedly mounted on the top of the supporting ring (311), four rectangular blocks (42) distributed in a rectangular shape are fixedly mounted on the top of the rectangular plate (41), a guide rod (43) is fixedly mounted between two of the rectangular blocks (42), and a screw rod (44) is rotatably mounted between the other two rectangular blocks (42), two sliders (46) are provided on the sliding sleeve of the guide rod (43), two moving blocks (45) are provided on the threaded sleeve of the screw rod (44), the sliders (46) and the moving blocks (45) on the same side are fixedly mounted on the top of the same horizontal plate (47), the bottoms of the two horizontal plates (47) are fixedly mounted with a clamping plate (49), one end of the screw rod (44) is fixedly mounted with a hand wheel (48), a circular level ruler (411) is fixedly mounted on the top of the rectangular plate (41), a through hole (410) is opened on the rectangular plate (41), and the through hole (410) is coaxially arranged with the measuring cup (31).

4. The liquid level gauge dedicated measurement and calibration device according to claim 3, characterized in that: The screw rod (44) is provided with two sections of threads with opposite rotation directions, and the two moving blocks (45) are respectively adapted to the threads with corresponding rotation directions, and the two clamping plates (49) are both arranged in a V-shape on the sides close to each other.

5. The liquid level meter special measurement and calibration device according to claim 1, characterized in that: The anti-shake support assembly (5) comprises an open ring (51) detachably mounted on the outside of the measuring cup (31), an annular groove (511) is provided on the outside of the open ring (51), an open ring (52) is rotatably mounted in the annular groove (511), the open ring (51) and the open ring (52) are both open, and a support mechanism (53) is connected between the open ring (52) and the support leg (1).

6. The liquid level gauge special measurement and calibration device according to claim 5, characterized in that: The support mechanism (53) comprises a damping telescopic rod (531), and the two ends of the damping telescopic rod (531) are respectively hinged with a hinge block 1 (532) and a hinge block 2 (533), the hinge block 1 (532) is rotatably connected to the corresponding support leg (1), and the hinge block 2 (533) is rotatably connected to the open ring 2 (52).

7. The liquid level meter dedicated measurement and calibration device according to claim 1, characterized in that: A scale window (312) is provided on the outside of the measuring cup (31).

Images