High-precision horizontal measuring instrument capable of being used for discontinuous plane

By designing a high-precision level measuring instrument composed of a measuring cylinder, ventilation valve, communication valve, communication hose, measurement tube, scale plate and gas filling piston, the height difference is calculated by calculating the movement of anhydrous ethanol and bubbles, the current solution is solved In the art, there are problems of insufficient measurement accuracy of discontinuous planes and the impact of obstacles, and the effect of 0.001mm accuracy and large-scale measurement has been achieved.

CN222336359UActive Publication Date: 2025-01-10SHIGANG JINGCHENG EQUIP TECH CO LTD
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Patent Information

Application Number
CN202420305114.6
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-02-19
Publication Date
2025-01-10
Estimated Expiration
2034-02-19

AI Technical Summary

Technical Problem

The existing level measurement instruments are insufficient in measuring discontinuous planes and are affected by obstacles and professional level of operators, so they cannot meet the needs of high-precision and large-scale measurements.

Method used

A high-precision level measuring instrument consisting of a measuring cylinder, ventilation valve, communication valve, communication hose, measurement tube, scale plate and gas filling piston is designed to measure the plane height difference by using the movement of anhydrous ethanol and bubbles. The area ratio of the measuring cylinder and the measuring tube is calculated by calculating the height difference, which is simple to operate and not affected by obstacles.

Benefits of technology

It realizes high-precision measurement of discontinuous planes, with an accuracy of 0.001mm, which is easy to operate, is suitable for large-scale measurements, and is not affected by the professional level of the measuring personnel, and meets daily production needs.

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Abstract

The utility model discloses a high-precision horizontal measuring instrument capable of being used for a discontinuous plane, belongs to the technical field of horizontal measuring instruments, and is used for carrying out high-precision horizontal measurement on the discontinuous plane. According to the technical scheme, measuring cylinders are horizontally placed cylinders, vent valves are installed at the upper ends of cylinder bodies of the two measuring cylinders respectively, communicating valves are installed on the end faces of one ends of the two measuring cylinders respectively, and the outer ends of the two communicating valves are connected with one ends of two communicating hoses respectively; the other ends of the two communicating hoses are connected to the two ends of a measuring tube respectively, the measuring tube is fixed to a rectangular scale plate, scales are arranged on the scale plate in the length direction, an air adding piston is installed in the center of the measuring tube, and the measuring cylinder, the communicating hoses and the measuring tube are filled with communicated absolute ethyl alcohol. According to the utility model, discontinuous planes can be measured without being influenced by an obstacle between two measurement planes, the operation is simple, the measurement range is large, and the measurement precision can be improved to 0.001 mm.
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Description

Technical Field

[0001] The utility model relates to an instrument capable of performing high-precision level measurement on a discontinuous plane, belonging to the technical field of level measurement instruments. Background Art

[0002] Currently, the main methods of measuring levelness are spirit level measurement and level.

[0003] The level ruler can only measure the levelness of a single plane. The accuracy of an industrial-grade high-precision level ruler is 0.02mm / m. The measuring length of the level ruler is usually 100mm to 300mm. The measurement accuracy is low, the measuring range is small, and it is limited to the same plane.

[0004] Although the level measurement can measure the horizontal height difference between two planes, the highest measurement accuracy of S05 level is only 0.5mm, and it requires a relatively high level of operation from the measurement personnel. The line of sight is also easily affected by obstacles during the measurement process, so it must be operated by professionals.

[0005] With the development of scientific research and the progress of production, the horizontal measurement accuracy of existing general-purpose levels can no longer meet the needs of scientific research and production, and high-grade levels have complex structures and high prices. Therefore, it is very necessary to develop a high-precision horizontal measuring instrument that can be widely used in grassroots units to meet the needs of daily production. Utility Model Content

[0006] The technical problem to be solved by the utility model is to provide a high-precision level measuring instrument that can be used for discontinuous planes. The high-precision level measuring instrument can measure discontinuous planes and is not affected by obstacles between the two measuring planes. The operation is simple and the measuring range is large. The measuring accuracy can be improved to 0.001mm.

[0007] The technical solution to solve the above technical problems is:

[0008] The invention discloses a high-precision level measuring instrument which can be used for discontinuous planes. The instrument comprises a measuring cylinder, a vent valve, a connecting valve, a connecting hose, a measuring tube, a scale plate and a gas-filling piston. The measuring cylinder is a horizontally placed cylindrical body, both ends of which are closed. The upper ends of the cylinder bodies of the two measuring cylinders are respectively provided with vent valves, and the end surfaces of one end of the two measuring cylinders are respectively provided with connecting valves. The outer ends of the two connecting valves are respectively connected with one end of two connecting hoses, and the other ends of the two connecting hoses are respectively connected with the two ends of a measuring tube. The measuring tube is fixed on a rectangular scale plate, the length of the scale plate matches the length of the measuring tube, and there are scales on the scale plate along the length direction. The gas-filling piston is installed at the center of the measuring tube, and the measuring cylinder, the connecting hose and the measuring tube are filled with connected anhydrous ethanol.

[0009] The above-mentioned high-precision level measuring instrument that can be used for discontinuous planes, the measuring cylinder is composed of a base, a cylindrical body, and an upper cover. The base is a rectangular plate, the lower end of the cylindrical body is fixed to the upper surface of the base, the central axis of the cylindrical body is parallel to the bottom surface of the base, the upper end of the cylindrical body has an opening, the upper cover is placed on the opening, the edge of the upper cover is sealed with the opening, there is a screw hole in the center of the upper cover, and the lower end of the vent valve is connected to the central screw hole of the upper cover through a thread.

[0010] The above-mentioned high-precision level measuring instrument can be used for discontinuous planes. The two ends of the connecting hose are respectively provided with quick-connect connectors connected to the connecting valve and the measuring tube. The measuring tube is made of transparent material, and the scale on the scale plate behind the measuring tube can be seen through the tube wall of the measuring tube.

[0011] The high-precision level measuring instrument that can be used for discontinuous planes has a ratio of the cross-sectional area of ​​the cylindrical body of the measuring barrel to the cross-sectional area of ​​the tube body of the measuring tube of 2000:1.

[0012] The above-mentioned high-precision level measuring instrument that can be used for discontinuous planes, the gas-filled piston is composed of a cylinder, a piston, and a sealing ring. There is a circular hole at the upper end of the middle position of the measuring tube. The cylinder of the gas-filled piston is placed vertically, and the lower end of the cylinder is connected to the circular hole at the upper end of the measuring tube. The upper inner wall of the cylinder is threaded, and the piston is inserted into the cylinder. The upper outer wall of the piston is threaded to match the inner wall thread of the cylinder. The upper thread of the piston is meshed with the inner wall thread of the cylinder. The lower part of the piston is located at the lower part of the inner cavity of the cylinder. A sealing ring is installed between the lower outer wall of the piston and the inner wall of the cylinder. The sealing ring tightly seals the lower outer wall of the piston and the inner wall of the cylinder. There is a rotating handle on the top of the piston.

[0013] The beneficial effects of the utility model are:

[0014] The utility model connects a measuring cylinder and a measuring tube through a connecting hose, and anhydrous ethanol is poured into the measuring cylinder, the connecting hose and the measuring tube, and a gas-filling piston and a scale are installed in the middle of the connecting hose. When two measuring cylinders are in different planes, the two connected measuring cylinders cause the anhydrous ethanol to flow from a higher side to a lower side due to the height difference of the planes where the two measuring cylinders are located, and the height difference of the planes where the two measuring cylinders are located can be calculated through the moving distance of the bubbles in the measuring tube and the ratio of the cross-sectional area of ​​the measuring cylinder to that of the measuring tube.

[0015] The utility model is easy to operate and can measure two discontinuous planes. When there is an obstacle between the two planes, the use of the utility model is not affected. To a certain extent, it is not limited by the distance between the points to be measured. The measurement accuracy can reach more than 0.001mm, and the measurement result is not affected by the operation and professional level of the measurement personnel, and can meet the needs of daily production. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of the utility model;

[0017] Figure 2 It is a schematic diagram of the structure of the measuring cylinder;

[0018] Figure 3 It is a schematic diagram of the structure of the measuring tube;

[0019] Figure 4 It is a calibration schematic diagram of the utility model;

[0020] Figure 5 It is a measurement schematic diagram of the utility model.

[0021] The markings in the figure are as follows: measuring cylinder 1, ventilation valve 2, connecting valve 3, connecting hose 4, measuring tube 5, scale plate 6, gas filling piston 7, scale 8, anhydrous ethanol 9, bubble 10, base 11, cylinder 12, upper cover 13, cylinder 14, piston 15, sealing ring 16, rotating handle 17. DETAILED DESCRIPTION

[0022] Figure 1 It is shown that the utility model comprises two measuring tubes 1, two ventilation valves 2, two connecting valves 3, two connecting hoses 4 and a measuring tube 5, a scale plate 6 and a gas filling piston 7.

[0023] Two measuring cylinders 1 are placed horizontally, and ventilation valves 2 are respectively installed on the upper ends of the cylinder bodies of the two measuring cylinders 1, and connecting valves 3 are respectively installed on the end surfaces of one end of the two measuring cylinders. The outer ends of the two connecting valves 3 are respectively connected to one end of two connecting hoses 4, and the other ends of the two connecting hoses 4 are respectively connected to the two ends of a measuring tube 5. The measuring tube 5 is fixed on a rectangular scale plate 6, and the length of the scale plate 6 matches the length of the measuring tube 5. There are scales 8 on the scale plate 6 along the length direction. A gas filling piston 7 is installed at the center of the measuring tube 5. The measuring cylinder 1, the connecting hose 4 and the measuring tube 5 are filled with connected anhydrous ethanol 9.

[0024] Figure 1 It shows that two measuring cylinders 1 and a measuring tube 5 form a communicating vessel through a connecting hose 4. The two ends of the two measuring cylinders 1 are connected to the connecting hose 4 through connecting valves 3 respectively. The measuring tube 5 is fixed on a scale plate 6, and the position of the bubble 10 in the measuring tube 5 can be seen through the scale 8 on the scale plate 6.

[0025] Figure 2As shown, the measuring cylinder 1 is composed of a base 11, a cylindrical body 12, and an upper cover 13. The base 11 is a rectangular plate, the lower end of the cylindrical body 12 is fixed to the upper surface of the base 11, and the central axis of the cylindrical body 12 is parallel to the bottom surface of the base 11. The upper end of the cylindrical body 12 has an opening, and the upper cover 13 is placed on the opening. The edge of the upper cover 13 is sealed with the opening, and the center of the upper cover 13 has a screw hole, and the lower end of the vent valve 2 is connected to the central screw hole of the upper cover 13 through a thread.

[0026] Figure 3 As shown, both ends of the measuring tube 5 are connected to the connecting hose 4 with quick-connect connectors respectively. The measuring tube 5 is made of transparent material, and the scale 8 on the scale plate 6 behind the measuring tube 5 can be seen through the tube wall of the measuring tube 5. The gas-filling piston 7 installed in the middle of the measuring tube 5 is composed of a cylinder 14, a piston 15, and a sealing ring 16. A circular hole is provided at the upper end of the middle position of the measuring tube 5. The cylinder 14 of the gas-filling piston 7 is placed vertically, and the lower end of the cylinder 14 is connected to the circular hole at the upper end of the measuring tube 5. The upper inner wall of the cylinder 14 is threaded, and the piston 15 is inserted into the cylinder 14. The upper outer wall of the piston 15 is threaded to match the inner wall thread of the cylinder 14. The upper thread of the piston 15 is engaged with the inner wall thread of the cylinder 14. The lower part of the piston 15 is located at the lower part of the inner cavity of the cylinder 14. A sealing ring 16 is installed between the lower outer wall of the piston 15 and the inner wall of the cylinder 14. The sealing ring 16 tightly seals the lower outer wall of the piston 15 and the inner wall of the cylinder 14. A rotating handle 17 is provided at the top of the piston 15. When in use, the rotary handle 17 is turned, the piston 15 moves downward, and the air in the cylinder 14 is pushed into the measuring tube 5 to form a bubble 10. The horizontality of the positions of the two measuring tubes 1 can be measured by the moving position of the bubble 10.

[0027] The liquid filled in the measuring cylinder 1, the measuring tube 5 and the connecting hose 4 is low-temperature resistant low-viscosity anhydrous ethanol 9, which can ensure the fluidity of the liquid at low temperatures. The surface tension of anhydrous ethanol 9 is greater than that of water, and it is easier to be divided by bubbles 10. The bubbles 10 formed inside are not easy to break, which facilitates reading the measurement results during the measurement process.

[0028] Figure 4 It is shown that the utility model needs to be calibrated before use, and the calibration process is as follows:

[0029] Place the utility model on a horizontal plane, bring the notches of the bases 11 of the two measuring tubes 1 together, open all the vent valves 2 and the connecting valves 3, connect the measuring tube 1, the connecting hose 4, the measuring tube 5 and the external air, let it stand for 5 minutes, and after the liquid level stabilizes, rotate the rotating handle 17 of the gas filling piston 7 on the measuring tube 5 to move the piston 15 downward, compress the air in the piston 15 and the cylinder 14, allow the air to enter the measuring tube 5, form a bubble 10, close the vent valve 2, and the calibration of the measuring instrument is completed.

[0030] Figure 5 It is shown that the measurement process of the utility model is as follows:

[0031] Place the calibrated measuring instrument on the two planes to be measured, open the ventilation valves 2 on the two measuring cylinders 1, and the anhydrous ethanol 9 in the measuring cylinder 1 at the higher point of the horizontal elevation of the two points to be measured will flow into the measuring cylinder 1 at the lower point of the horizontal elevation through the connecting valve 3, the connecting hose 4 and the measuring tube 5;

[0032] Assume that the height difference between the two points to be measured is h, then the liquid level of the measuring tube 1 at the higher point drops by 1 / 2h, and the liquid level of the measuring tube 1 at the lower point rises by 1 / 2h. If the liquid levels in the two measuring tubes 1 are on the same level, then the volume of anhydrous ethanol 9 flowing out of the measuring tube 1 at the higher point is Vout.

[0033] Vout = 89.44 × 89.44 × π × (h / 2) × 1 / 4

[0034] Then the volume of anhydrous ethanol 9 flowing through the measuring tube 5 is Vmeasured = Vout

[0035] The displacement of the bubble 10 in the measuring tube 5 is L = Vmeasure / (2×2×π×1 / 4) = 1000h

[0036] At this time, the reading of the bubble 10 on the scale plate 6 divided by 1000 is the difference in the horizontal heights of the two points to be measured. In this way, the horizontal measurement result with an accuracy of 0.001mm can be obtained by direct reading;

[0037] After the measurement is completed, close the ventilation valve 2, place the two measuring tubes 1 on the same horizontal plane according to the calibration method, open the ventilation valve 2 again, and let it stand for five minutes to allow the bubbles 10 in the measuring tube 1 to return to the bottom of the gas filling piston 7, rotate the rotating handle 17 of the gas filling piston 7 of the measuring tube 5 in the opposite direction, move the piston 15 upward, and extract the bubbles 10 and part of the anhydrous ethanol 9 in the measuring tube 4. Finally, close all the ventilation valves 2 and connecting valves 3 to prevent the vibration during transportation and movement from causing the anhydrous ethanol 9 in the connecting hose 4 and the measuring tube 5 to mix with air, thereby affecting the measurement accuracy.

[0038] An embodiment of the present utility model is as follows:

[0039] The depth of the measuring tube 1 is 80 mm, the outer diameter of the tube wall is 100 mm, and the inner diameter is 89.44 mm;

[0040] The model of the vent valve 2 is PHV8A;

[0041] The model of connecting valve 3 is PHV8A;

[0042] The connecting hose 4 is a PU tube with a diameter of 8 mm and a length determined according to the distance of the measured plane on site, and the total length is usually less than 100 m;

[0043] The measuring tube 5 has a length of 600 mm and an inner diameter of 2 mm;

[0044] The length of the scale plate 6 is 600 mm and the width is 30 mm;

[0045] The inner diameter of the cylinder 14 of the gas piston 7 is 10 mm, the length is 80 mm, and the height of the piston 15 is 35 mm.

Claims

1. A high-precision level measuring instrument that can be used for discontinuous planes, characterized in that: The measuring tube (1) is composed of a measuring tube (1), a vent valve (2), a connecting valve (3), a connecting hose (4), a measuring tube (5), a scale plate (6), and a gas-filling piston (7). The measuring tube (1) is a horizontally placed cylindrical body. Both ends of the cylindrical body of the measuring tube (1) are closed. The upper ends of the cylindrical bodies of the two measuring tubes (1) are respectively provided with vent valves (2). The end surfaces of one end of the two measuring tubes (1) are respectively provided with connecting valves (3). The outer ends of the two connecting valves (3) are respectively connected to one end of two connecting hoses (4). The other ends of the two connecting hoses (4) are respectively connected to the two ends of a measuring tube (5). The measuring tube (5) is fixed on a rectangular scale plate (6). The length of the scale plate (6) matches the length of the measuring tube (5). The scale plate (6) is provided with scales (8) along the length direction. The center position of the measuring tube (5) is provided with a gas-filling piston (7). The measuring tube (1), the connecting hose (4), and the measuring tube (5) are filled with interconnected anhydrous ethanol (9).

2. The high-precision level measuring instrument applicable to discontinuous planes according to claim 1, characterized in that: The measuring cylinder (1) is composed of a base (11), a cylindrical body (12), and an upper cover (13). The base (11) is a rectangular plate. The lower end of the cylindrical body (12) is fixed to the upper surface of the base (11). The central axis of the cylindrical body (12) is parallel to the bottom surface of the base (11). The upper end of the cylindrical body (12) has an opening. The upper cover (13) is placed on the opening. The edge of the upper cover (13) is sealed with the opening. The center of the upper cover (13) has a screw hole. The lower end of the vent valve (2) is connected to the central screw hole of the upper cover (13) through a thread.

3. The high-precision level measuring instrument applicable to discontinuous planes according to claim 1, characterized in that: The two ends of the connecting hose (4) are respectively provided with quick-connect connectors connected to the connecting valve (3) and the measuring tube (5), respectively. The measuring tube (5) is made of a transparent material, and the scale (8) on the scale plate (6) behind the measuring tube (5) can be seen through the tube wall of the measuring tube (5).

4. The high-precision level measuring instrument applicable to discontinuous planes according to claim 1, characterized in that: The ratio of the cross-sectional area of ​​the cylindrical body of the measuring cylinder (1) to the cross-sectional area of ​​the tube body of the measuring tube (5) is 2000:

1.

5. The high-precision level measuring instrument applicable to discontinuous planes according to claim 1, characterized in that: The gas piston (7) is composed of a cylinder (14), a piston (15), and a sealing ring (16). A circular hole is provided at the upper end of the middle position of the measuring tube (5). The cylinder (14) of the gas piston (7) is placed vertically. The lower end of the cylinder (14) is connected to the circular hole at the upper end of the measuring tube (5). The upper inner wall of the cylinder (14) is threaded. The piston (15) is inserted into the cylinder (14). The upper outer wall of the piston (15) is threaded to match the inner wall thread of the cylinder (14). The upper thread of the piston (15) is meshed with the inner wall thread of the cylinder (14). The lower part of the piston (15) is located at the lower part of the inner cavity of the cylinder (14). A sealing ring (16) is installed between the lower outer wall of the piston (15) and the inner wall of the cylinder (14). The sealing ring (16) tightly seals the lower outer wall of the piston (15) and the inner wall of the cylinder (14). The top of the piston (15) is provided with a rotating handle (17).