Metering and calibrating device special for liquid level meter

Abstract

The invention belongs to the technical field of liquidometer verification, and particularly relates to a metering verification device special for a liquidometer, which comprises three supporting legs, the top ends of the three supporting legs are fixedly connected with the same vertical adjusting mechanism, and the supporting legs are distributed on the side surface of the vertical adjusting mechanism in a circumferential array manner; a liquid control verification mechanism is detachably installed in the vertical adjusting mechanism, the outer side of the liquid control verification mechanism is detachably sleeved with an anti-shake supporting assembly, the anti-shake supporting assembly is connected with the three supporting legs, and the liquid control verification mechanism is automatically overturned and kept in a vertical state after liquid is injected into the liquid control verification mechanism. According to the invention, liquid is injected into the liquid control verification mechanism, and under the counterweight of the liquid, the vertical adjustment mechanism can keep the liquid control verification mechanism in a vertical state on an uneven table top, so that the liquid level in the measuring cup is kept horizontal, and the situation that the verification result is inaccurate due to inclination of the liquid level is avoided.

Description

Technical Field

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

[0002] The liquid level meter needs to be calibrated before leaving 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 height of the liquid level and perform multiple value comparisons.

[0003] When the calibration device is calibrated for 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 a level meter 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 scheme: a special metrological calibration device for a liquid level meter, comprising three legs, the top ends of the three legs are fixedly connected with 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, the anti-shake support assembly is 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 is used to maintain the vertical state of the liquid control calibration mechanism, and a clamping mechanism for clamping the liquid level meter body is 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 inspection 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 through two of the rectangular blocks, and the same screw rod is rotatably mounted through the other two rectangular blocks, two sliders are provided on the sliding sleeve of the guide rod, and two moving blocks are provided on the threaded sleeve of the screw rod, the same cross plate is fixedly mounted on the top of the slider and the moving block on the same side, and clamps are fixedly mounted on the bottom of the two cross plates, a handwheel is fixedly mounted on one end of the screw rod, 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 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 comprises a damping telescopic rod, and both ends of the damping telescopic rod are respectively hinged with an articulated block 1 and an articulated block 2, the articulated block 1 is rotatably connected to the corresponding leg, and the articulated 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 in a vertical state on an uneven table surface, thereby ensuring that the liquid level in the measuring cup remains horizontal, thus avoiding the situation where the liquid level is tilted 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, thus ensuring the stability of 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 meter proposed by the present invention;

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

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

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

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

[0024] Figure 7 A structural schematic diagram of a support mechanism in a special measurement and calibration device for a liquid level meter proposed by the present invention

[0025] In the 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, supporting 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. cross plate; 48. handwheel; 49. splint; 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. hinge block one; 533. hinge block two. DETAILED DESCRIPTION

[0026] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work 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 meter, comprising a leg 1, wherein the number of the legs 1 is three, the top ends of the three legs 1 are fixedly connected with a 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, 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 meter body is fixedly installed on the top of the liquid control calibration mechanism 3.

[0028] 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 22 is rollingly installed on the inner side of the annular ring 1 21, 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, and 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 1 221 are fixedly installed on the outer side of the annular ring 22, and rollers 222 are rotatably sleeved on the two annular rings 1 21. An annular groove 1 211 is opened on the inner side of the annular ring 1 21, and the two rollers 222 are rollingly installed in the annular groove 1 211. 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, and 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 height 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 a same guide rod 43 is fixedly mounted through two of the rectangular blocks 42, and a same screw rod 44 is rotatably mounted through the other two rectangular blocks 42, two sliders 46 are slidably sleeved on the guide rod 43, and two moving blocks 45 are threadedly sleeved on the screw rod 44, and a same cross plate 47 is fixedly mounted on the top of the sliders 46 and the moving blocks 45 on the same side, and a clamping plate 49 is fixedly mounted on the bottom of the two cross plates 47, a hand wheel 48 is fixedly mounted on one end of the screw rod 44, and a circular level ruler 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 matched with 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.

[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 the liquid level meter bodies of different sizes.

[0036] The anti-shake support assembly 5 includes an open ring 1 51 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 the opening ring 1 51 and the opening ring 2 52 are both set as openings, it is convenient for the staff to observe the scale window 312 from the openings.

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

[0039] Furthermore, the damping telescopic rod 531 can be stably extended and retracted when subjected to a uniform external force, but will not be smoothly extended and retracted when subjected to a sudden and violent external force. 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 over 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 disposed on the outer side of the measuring cup 31 .

[0041] In this embodiment: when in use, the device is first placed on a tabletop so that the bottoms of the three legs 1 are in contact with the tabletop, and then the liquid level meter body is passed through the through hole 410, and then the hand wheel 48 is turned by hand, and the hand wheel 48 rotates and drives the screw rod 44 to rotate, and the screw rod 44 rotates to drive the two horizontal plates 47 to approach each other through the two moving blocks 45, and the two horizontal plates 47 drive the two clamping plates 49 to approach each other and clamp the liquid level meter body;

[0042] Then, liquid is injected into the measuring cup 31 from the top opening. As the amount of liquid in the measuring cup 31 increases, its own weight increases continuously. Under the action of gravity, the measuring cup 31 rotates with the annular ring 4 24, the annular ring 3 23 and the two rotating shafts 231 as the center of the circle, and 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 maintain a vertical state.

[0043] In the process of the measuring cup 31 driving the annular ring 22 and the annular ring 3 23 to turn over, the open ring 1 51 and the open ring 2 52 will make the three supporting mechanisms 53 show different degrees of expansion and contraction, and in the process of the annular ring 22 rotating around the axis of the annular ring 1 21 as the center, the measuring cup 31 will drive the open ring 1 51 to rotate around the axis of the open ring 2 52 as the center, and then the alignment and calibration are performed by observing the liquid level height on the scale window 312 and the liquid level height on the liquid level meter 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 align and calibrate with the liquid level height on the liquid level meter body for multiple times, thereby completing the calibration of the liquid level meter body.

[0045] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A special measurement and calibration device for a liquid level meter, 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 and calibration mechanism (3) is detachably installed in the vertical adjustment mechanism (2). An anti-shake support component (5) is detachably mounted on the outer side of the liquid control and calibration mechanism (3). The anti-shake support component (5) is connected to the three legs (1). After liquid is injected into the liquid control and calibration mechanism (3), the liquid control and calibration mechanism (3) will automatically flip over and maintain a vertical state. The anti-shake support component (5) is used to maintain the vertical state of the liquid control and calibration mechanism (3). A clamping mechanism (4) for clamping the liquid level meter body is fixedly installed on the top of the liquid control and calibration mechanism (3).

2. A liquid level meter special measurement and calibration device according to claim 1, characterized in that: The vertical adjustment mechanism (2) comprises 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 rollably 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 sleeved on the outer side of the liquid control and verification mechanism (3).

3. A liquid level meter special measurement and calibration device according to claim 2, 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 rollingly 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) penetrate the annular ring (22) and are rotatably connected to the annular ring (22), and the rotating shafts (231) and the rotating shafts (221) are vertically distributed.

4. A liquid level meter special measurement and calibration device according to claim 2, characterized in that: The liquid control and verification mechanism (3) comprises 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), 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 comprises a syringe (33), and a hose (34) is connected between the drain pipe (313) and the syringe (33).

5. A liquid level meter special measurement and calibration device according to claim 4, characterized in that: The clamping mechanism (4) comprises 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 a guide rod (43) is fixedly mounted between two rectangular blocks (42), and a screw rod (44) is rotatably mounted between the other two rectangular blocks (42), and two sliders (46) are slidably sleeved on the guide rod (43), and a threaded sleeve is provided on the screw rod (44). There are two moving blocks (45), a same horizontal plate (47) is fixedly mounted on the top of the slider (46) and the moving block (45) located on the same side, a clamping plate (49) is fixedly mounted on the bottom of the two horizontal plates (47), a hand wheel (48) is fixedly mounted on one end of the screw rod (44), 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).

6. A liquid level meter special measurement and verification device according to claim 5, 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 matched with the threads with corresponding rotation directions, and the two clamping plates (49) are arranged in a V shape on the sides close to each other.

7. A liquid level meter special measurement and verification device according to claim 4, characterized in that: The anti-shake support assembly (5) comprises an open ring (51) detachably sleeved 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).

8. A liquid level meter special measurement and calibration device according to claim 7, characterized in that: The support mechanism (53) comprises a damping telescopic rod (531), and 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).

9. A liquid level meter special measurement and verification device according to claim 4, characterized in that: The outer side of the measuring cup (31) is provided with a scale window (312).

Images