A self-correcting magnetostrictive level gauge and method of use

Abstract

The invention provides a self-correcting magnetostrictive liquid level gauge and a use method, belonging to the technical field of liquid level gauges. The self-correcting magnetostrictive liquid level gauge comprises a fixed plate, a probe rod and a meter head. The outer surface of the probe rod is provided with a suspension component, and the suspension component is arranged inside a filter component. The filter component is slidably connected to the outer surface of the probe rod. A moving component is fixedly installed on the lower surface of the fixed plate, and a connecting component is installed on the moving component. With the arrangement of the suspension component, a worker can add water to the inside of a suspension ball according to the density of the solution to change the weight of the suspension. Since the density of each liquid surface is different, the weight of the suspension balls at different positions can be made different by adjusting the weight of the suspension balls, so that a plurality of suspension balls can float on different solutions, thereby achieving the purpose of measuring multi-layer liquid surfaces.

Description

Technical Field

[0001] The invention belongs to the technical field of liquid level gauges, and in particular relates to a self-correcting magnetostrictive liquid level gauge and a use method thereof. Background Art

[0002] At present, magnetostrictive level gauges are developed based on the buoyancy principle and magnetostrictive lines. The cylinder of the magnetostrictive level gauge is connected to the container to form a communicating vessel. The liquid level in the container is at the same height as the liquid level in the cylinder of the magnetostrictive level gauge. When the liquid level in the measured container rises or falls, the liquid level in the cylinder of the level gauge also rises or falls accordingly. The float built into the cylinder floats up and down with the liquid level. Since a group of permanent magnets are installed in the float, the float generates a magnetic field at the same time. When the current magnetic field meets the float magnetic field, a "distorted" pulse, or "return" pulse, is generated. The time difference between the "return" pulse and the current pulse is converted into a pulse signal, thereby calculating the actual position of the float and measuring the liquid level with high measurement accuracy.

[0003] In some application scenarios, liquid materials with larger particles are filled in the container. These granular materials will affect the normal operation of the float, that is, they will hinder the float's rising and falling movement with the liquid level, affecting the accuracy of the liquid level measurement. In addition, a float is generally used. When it is necessary to measure the stratified liquid level in the solution, it is inconvenient. In addition, when the accuracy of the level meter is calibrated and measured, the staff is required to remove the level meter from the solution barrel, and then the staff manually slides the float to change its position on the probe rod, and detects the level meter according to the reading displayed on the head. Disassembly and assembly requires a lot of time and manpower. For this reason, we propose a self-correcting magnetostrictive level meter and a method for using it. Summary of the invention

[0004] The purpose of the present invention is to provide a self-correcting magnetostrictive liquid level gauge, which aims to solve the problem that particulate materials in the prior art will affect the normal operation of the float, that is, it will hinder the rise and fall movement of the float with the liquid level, affecting the accuracy of the liquid level measurement, and the existing generally uses a float, when it is necessary to measure the stratified liquid level in the solution, it is inconvenient, and when the accuracy calibration measurement of the liquid level gauge is performed, the staff is required to remove the liquid level gauge from the solution barrel, and then the staff manually slides the float to change the position on the probe rod, and detects the liquid level gauge according to the indication displayed on the meter head, and the disassembly and assembly requires a lot of time and manpower.

[0005] To achieve the above object, the present invention provides the following technical solution: a self-correcting magnetostrictive liquid level gauge, comprising a fixed plate, a probe rod and a meter head, the outer surface of the probe rod is provided with a suspension component, and the suspension component is arranged inside a filter assembly, the filter assembly is slidably connected to the outer surface of the probe rod, a moving component is fixedly installed on the lower surface of the fixed plate, and a connecting component is installed on the moving component;

[0006] The suspension assembly includes a suspension ball, which is slidably connected to the outer surface of the probe rod, the upper surface of the suspension ball is fixedly connected to a sealing cover by screws, and the outer surface of the suspension ball is fixedly connected to a towing rod;

[0007] The filter assembly comprises a hemispherical filter, the upper surface of which is fixedly connected with a suspension ring, and the upper surface of which is provided with a positioning groove.

[0008] Preferably, the moving assembly comprises a fixing frame, a threaded rod is mounted on the fixing frame via a bearing, a support plate is threadedly connected to the outer surface of the threaded rod, and the top end of the threaded rod is fixedly connected to the output end of the servo motor.

[0009] Preferably, a motor mounting seat is fixedly connected to one side of the fixing frame, a servo motor is fixedly mounted to one side of the motor mounting seat, and the support plate is slidably connected to the fixing frame.

[0010] Preferably, the connecting assembly includes an electric push rod, one side of the support plate is fixedly connected to the electric push rod, one end of the electric push rod away from the support plate is fixedly connected to the plug plate, and the outer surface of the suspension ring is fixedly connected to a positioning seat.

[0011] Preferably, the tow bar is arranged above the positioning groove, and the inner dimension of the positioning groove is larger than the outer dimension of the tow bar.

[0012] Preferably, a limiting ring is sleeved on the outer surface of the probe rod, and the limiting ring is fixedly connected to the probe rod via a positioning handle.

[0013] Preferably, the interior of the suspension ball is hollow, the outer surface of the probe rod is fixedly connected to a limiting protrusion, and the interior of the suspension ball is provided with a limiting groove matched with the limiting protrusion.

[0014] Preferably, the outer surface of the probe rod is provided with a scale bar.

[0015] Preferably, the size of the inserting plate is smaller than the size of the inner groove of the positioning seat, and the inserting plate can be inserted into the interior of the positioning seat.

[0016] Preferably, the method of use is as follows:

[0017] When the liquid level needs to be measured;

[0018] S1 The staff can determine the density of the liquid to be measured and the number of layers of the liquid surface to be measured;

[0019] S2 According to the number of layers of the determined liquid, the same number of suspension balls can be installed on the probe rod, and then according to the density of the liquid, the sealing cover on the suspension ball is opened, water is added into the interior, and the weight of the suspension ball is adjusted to make the suspension ball float on the liquid surface;

[0020] S3 inserts the liquid level meter into the solution barrel, and fixes the fixing plate to the top of the solution barrel;

[0021] S4 As the liquid level inside the solution barrel rises, the suspended ball moves on the probe rod, and the height of the liquid surface can be measured.

[0022] Compared with the prior art, the present invention has the following beneficial effects:

[0023] 1. The self-correcting magnetostrictive level meter and its use method, through the setting of the suspension component, the staff can add water to the suspension ball according to the density of the solution to change the weight of the suspension. Since the density of each liquid surface is different, by adjusting the weight of the suspension ball, the weight of the suspension ball at different positions can be different, then multiple suspension balls will float on different solutions, and the purpose of measuring multiple liquid levels can be achieved.

[0024] 2. The self-correcting magnetostrictive liquid level meter and its use method can wrap the suspended ball through the hemispherical filter, which can effectively isolate the particulate debris in the solution, so that the filtered water enters the interior of the hemispherical filter. The suspended ball floats due to the buoyancy of the solution, and the particulate debris is isolated, which can effectively reduce the impact of the debris on the suspended ball and improve the measurement accuracy of the suspended ball.

[0025] 3. The self-correcting magnetostrictive liquid level gauge and its use method, through the setting of the moving component and the connecting component, the electric push rod drives the plug plate to be inserted into the positioning seat, and then restarts the servo motor to control the support plate to move upward, which can drive the suspension circle to move upward. In the process of the suspension circle moving upward, the drag rod on the suspension ball can be inserted into the positioning groove of the suspension circle, so that the suspension circle and the suspension ball can move together. The position of the suspension ball can be judged by whether the indication of the scale bar is consistent with the data displayed on the head display screen. If they are consistent, it means that the accuracy of the liquid level gauge is accurate. If not, the indication on the display screen can be adjusted to make it consistent with the scale on the probe rod, and the correction can be completed without re-disassembling the liquid level gauge, which greatly reduces labor and saves time. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0027] Figure 1 It is a schematic diagram of the axonometric structure in the present invention;

[0028] Figure 2 It is a schematic diagram of the rear axonometric structure of the present invention;

[0029] Figure 3 It is a schematic diagram of the axonometric structure in the present invention when viewed from above;

[0030] Figure 4 It is a schematic diagram of the cross-section axonometric structure of the present invention;

[0031] Figure 5 It is one of the partial enlarged structural schematic diagrams in the present invention;

[0032] Figure 6 This is the second schematic diagram of the local enlarged structure in the present invention;

[0033] Figure 7 This is the third schematic diagram of the local enlarged structure in the present invention;

[0034] Figure 8 This is the fourth schematic diagram of the local enlarged structure in the present invention;

[0035] Fig. 9 This is the fifth schematic diagram of the partially enlarged structure in the present invention.

[0036] In the figure: 1. fixing plate; 2. probe rod; 3. meter head; 4. suspension ball; 5. sealing cover; 6. drag rod; 7. hemispherical filter; 8. suspension ring; 9. positioning groove; 10. fixing frame; 11. threaded rod; 12. support plate; 13. servo motor; 14. motor mounting seat; 15. electric push rod; 16. plug-in plate; 17. positioning seat; 18. limiting ring; 19. positioning handle; 20. limiting protrusion; 21. limiting groove; 22. scale bar. DETAILED DESCRIPTION

[0037] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. 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. Example

[0038] See also Figure 1-9The present invention provides the following technical solutions: a self-correcting magnetostrictive liquid level gauge, comprising a fixed plate 1, a probe rod 2 and a meter head 3, a suspension component is arranged on the outer surface of the probe rod 2, and the suspension component is arranged inside the filter assembly, the filter assembly is slidably connected to the outer surface of the probe rod 2, a moving assembly is fixedly installed on the lower surface of the fixed plate 1, and a connecting assembly is installed on the moving assembly;

[0039] The suspension assembly includes a suspension ball 4, which is slidably connected to the outer surface of the probe rod 2, a sealing cover 5 is fixedly connected to the upper surface of the suspension ball 4 by screws, and a towing rod 6 is fixedly connected to the outer surface of the suspension ball 4;

[0040] The filter assembly comprises a hemispherical filter 7 , the upper surface of which is fixedly connected with a suspension ring 8 , and the upper surface of the suspension ring 8 is provided with a positioning groove 9 .

[0041] When in use, according to the density of the liquid, open the sealing cover 5 on the suspension ball 4, add water into the interior, and adjust the weight of the suspension ball 4 so that the suspension ball 4 can be suspended on the liquid surface; insert the liquid level meter into the solution barrel, and fix the fixing plate 1 to the top of the solution barrel; as the liquid level inside the solution barrel rises, the suspension ball 4 moves on the probe 2. Since the density of each liquid surface is different, by adjusting the weight of the suspension ball 4, the weight of the suspension ball 4 at different positions can be different, so that multiple suspension balls 4 will float on different solutions. The purpose of measuring multi-layer liquid levels can be achieved. Due to the setting of the filter assembly, the suspension circle 8 is hollow and a water adding pipe is arranged on the top. The staff can add water to the suspension circle 8 to adjust the dead weight of the suspension circle 8 according to the needs. The hemispherical filter 7 can wrap the suspension ball 4, which can effectively isolate the particulate debris in the solution, and make the filtered water enter the hemispherical filter 7. Then, the suspension ball 4 floats due to the buoyancy of the solution, and the particulate debris is isolated, which can effectively reduce the influence of the debris on the suspension ball 4 and improve the measurement accuracy of the suspension ball 4.

[0042] See also Figure 1 , Figure 2 , Figure 3 and Figure 5 As shown, the moving assembly includes a fixed frame 10, on which a threaded rod 11 is installed through a bearing. The outer surface of the threaded rod 11 is threadedly connected to a support plate 12, and the top end of the threaded rod 11 is fixedly connected to the output end of a servo motor 13.

[0043] During specific use, through the arrangement of the fixing frame 10, the threaded rod 11 and the servo motor 13, the servo motor 13 can provide the threaded rod 11 with rotational power. Due to the arrangement of the bearing, the threaded rod 11 can rotate more smoothly during the rotation process.

[0044] See also Figure 3 and Figure 7As shown, a motor mounting seat 14 is fixedly connected to one side of the fixing frame 10 , a servo motor 13 is fixedly mounted to one side of the motor mounting seat 14 , and a support plate 12 is slidably connected to the fixing frame 10 .

[0045] During specific use, the servo motor 13 is installed on the motor mounting seat 14 through the setting of the motor mounting seat 14, so that the servo motor 13 can be installed and fixed more firmly, and the servo motor 13 can run more stably.

[0046] See also Figure 2 and Figure 5 As shown, the connecting assembly includes an electric push rod 15, one side of the support plate 12 is fixedly connected to the electric push rod 15, the end of the electric push rod 15 away from the support plate 12 is fixedly connected to the plug plate 16, and the outer surface of the suspension ring 8 is fixedly connected to the positioning seat 17.

[0047] During specific use, through the arrangement of the electric push rod 15, the plug plate 16, the suspension ring 8 and the positioning seat 17, when the accuracy test of the liquid level meter is required, the staff can start the electric push rod 15 to insert the plug plate 16 into the positioning seat 17, and then control the movement of the support plate 12 to move the suspension ring 8, and then control the suspension ball 4 to slide on the probe rod 2, so as to facilitate the movement of the position of the suspension ball 4.

[0048] See also Figure 5 As shown, the tow bar 6 is arranged above the positioning groove 9 , and the inner dimension of the positioning groove 9 is larger than the outer dimension of the tow bar 6 .

[0049] During specific use, through the setting of the drag rod 6 and the positioning groove 9, during detection, the drag rod 6 can cooperate with the positioning groove 9, so that the suspension ring 8 and the suspension ball 4 are connected as one and move together. After the detection is completed, the drag rod 6 is conveniently separated from the inside of the positioning groove 9, so that the suspension ball 4 and the suspension ring 8 can work normally.

[0050] See also Figure 2 and Figure 6 As shown, a limit ring 18 is sleeved on the outer surface of the probe rod 2 , and the limit ring 18 is fixedly connected to the probe rod 2 via a positioning handle 19 .

[0051] During specific use, the suspension ball 4 can be shielded by the setting of the limiting ring 18 and the positioning handle 19, and the limiting ring 18 can be removed, and the staff can install the required number of suspension balls 4 according to needs.

[0052] See also Figure 2 , Figure 6 , Figure 8 and Fig. 9 As shown, the interior of the suspension ball 4 is hollow, the outer surface of the probe rod 2 is fixedly connected to the limiting protrusion 20 , and the interior of the suspension ball 4 is provided with a limiting groove 21 matched with the limiting protrusion 20 .

[0053] During specific use, by setting the limiting protrusion 20 and the limiting groove 21, the suspension ball 4 is less likely to be displaced when moving, and the movement is more stable.

[0054] See also Figure 4 As shown, the outer surface of the probe rod 2 is provided with a scale bar 22 .

[0055] During specific use, the setting of the scale bar 22 makes it convenient for the staff to observe the position of the suspension ball 4 and compare it with the display of the meter head 3 to judge the accuracy of the liquid level meter.

[0056] See also Figure 5 As shown, the size of the inserting plate 16 is smaller than the inner groove size of the positioning seat 17 , and the inserting plate 16 can be inserted into the positioning seat 17 .

[0057] When in use, the plug plate 16 and the positioning seat 17 are arranged to facilitate the insertion of the plug plate 16 into the positioning seat 17, and the connection is more convenient. When the liquid level meter needs to be accurately tested and corrected, the staff can observe the condition inside the solution barrel through the window of the solution barrel. The staff can first start the servo motor 13, and the servo motor 13 drives the threaded rod 11 to rotate, so that the support plate 12 moves downward. When the plug plate 16 moves to be parallel to the positioning seat 17, the electric push rod 15 can be started, and the electric push rod 15 drives the plug plate 16 to be inserted into the positioning seat 17, and then the servo motor 13 is restarted to control the support plate 12 to move upward. , it can drive the suspension ring 8 to move upward. During the upward movement of the suspension ring 8, the drag rod 6 on the suspension ball 4 can be inserted into the positioning groove 9 of the suspension ring 8, so that the suspension ring 8 and the suspension ball 4 can move together. The position of the suspension ball 4 can be judged by whether the indication of the scale bar 22 is consistent with the data displayed on the display screen of the meter head 3 to determine the accuracy of the liquid level meter. If they are consistent, it means that the accuracy of the liquid level meter is accurate. If they are inconsistent, the indication on the display screen can be adjusted to make it consistent with the scale on the probe rod 2, and the correction can be completed without re-disassembling the liquid level meter, which greatly reduces labor and saves time.

[0058] The method of use is as follows:

[0059] When the liquid level needs to be measured;

[0060] S1 The staff can determine the density of the liquid to be measured and the number of layers of the liquid surface to be measured;

[0061] S2 According to the number of layers of the determined liquid, the same number of suspension balls 4 can be installed on the probe rod 2, and then according to the density of the liquid, the sealing cover 5 on the suspension ball 4 is opened, water is added to the inside, and the weight of the suspension ball 4 is adjusted to make the suspension ball 4 suspended on the liquid surface;

[0062] S3: inserting the liquid level meter into the solution barrel, and fixing the fixing plate 1 to the top of the solution barrel;

[0063] S4: As the liquid level inside the solution barrel rises, the suspension ball 4 moves on the probe rod 2, and the height of the liquid surface can be measured.

[0064] The working principle and use process of the present invention: a self-correcting magnetostrictive liquid level gauge and a method of use;

[0065] When the liquid level needs to be measured;

[0066] The staff can determine the density of the liquid to be measured and the number of layers of the liquid surface to be measured; according to the number of layers of the liquid determined, the same number of suspension balls 4 can be installed on the probe 2, and then according to the density of the liquid, the sealing cover 5 on the suspension ball 4 is opened, and water is added to the inside, and the weight of the suspension ball 4 is adjusted, so that the suspension ball 4 can be suspended on the liquid surface; the liquid level meter is inserted into the solution barrel, and the fixing plate 1 is fixed to the top of the solution barrel; as the liquid level inside the solution barrel rises, the suspension ball 4 moves on the probe 2, and since the density of each liquid surface is different, by adjusting the weight of the suspension ball 4, the weight of the suspension ball 4 at different positions can be different, so that multiple suspension balls 4 will float on different solutions, and the purpose of measuring multiple liquid surfaces can be achieved;

[0067] Due to the setting of the filter assembly, the suspension circle 8 is hollow and has a water supply pipe on the top. The staff can add water to the suspension circle 8 to adjust the deadweight of the suspension circle 8 according to the needs. The hemispherical filter 7 can wrap the suspension ball 4, which can effectively isolate the particulate debris in the solution, so that the filtered water enters the hemispherical filter 7. Then, the suspension ball 4 is floated by the buoyancy of the solution, and the particulate debris is isolated, which can effectively reduce the influence of the debris on the suspension ball 4 and improve the measurement accuracy of the suspension ball 4.

[0068] When the accuracy detection and correction of the liquid level meter is required, the staff can observe the condition inside the solution barrel through the window of the solution barrel. The staff can first start the servo motor 13, and the servo motor 13 drives the threaded rod 11 to rotate, so that the support plate 12 moves downward. When the plug plate 16 moves to be parallel to the positioning seat 17, the electric push rod 15 can be started, and the electric push rod 15 drives the plug plate 16 to be inserted into the positioning seat 17. Then, the servo motor 13 is restarted to control the support plate 12 to move upward, which can drive the suspension ring 8 to move upward. In the process of the suspension ring 8 moving upward, the tow rod 6 on the suspension ball 4 can be inserted into the positioning groove 9 of the suspension ring 8, so that the suspension ring 8 and the suspension ball 4 can move together. Through the position of the movement of the suspension ball 4, The accuracy of the level meter can be judged by whether the indication of the scale bar 22 is consistent with the data displayed on the display screen of the meter head 3. If they are consistent, it means that the accuracy of the level meter is accurate. If they are inconsistent, the indication on the display screen can be adjusted to make it consistent with the scale on the probe rod 2. Then the correction can be completed without the need to disassemble and reassemble the level meter, which greatly reduces the labor and saves time. After the inspection is completed, the staff only needs to start the electric push rod 15, separate the plug plate 16 from the positioning seat 17, start the servo motor 13, and move the support plate 12 to the top again. Since the size of the positioning groove 9 is larger than the size of the drag rod 6, when the suspension ball 4 floats, the drag rod 6 and the positioning groove 9 can be automatically separated. The level meter can continue to be used after the inspection, which saves time and effort.

[0069] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A self-correcting magnetostrictive liquid level gauge, comprising a fixing plate (1), a probe rod (2) and a meter head (3), characterized in that: The outer surface of the probe rod (2) is provided with a suspension component, and the suspension component is arranged inside the filter component, the filter component is slidably connected to the outer surface of the probe rod (2), the lower surface of the fixed plate (1) is fixedly mounted with a moving component, and the moving component is mounted with a connecting component; The suspension assembly comprises a suspension ball (4), the suspension ball (4) is slidably connected to the outer surface of the probe rod (2), the upper surface of the suspension ball (4) is fixedly connected to a sealing cover (5) via screws, and the outer surface of the suspension ball (4) is fixedly connected to a towing rod (6); The filter assembly comprises a hemispherical filter (7), the upper surface of the hemispherical filter (7) being fixedly connected to a suspension ring (8), and the upper surface of the suspension ring (8) being provided with a positioning groove (9); The moving assembly comprises a fixed frame (10), a threaded rod (11) is mounted on the fixed frame (10) via a bearing, a support plate (12) is threadedly connected to the outer surface of the threaded rod (11), a top end of the threaded rod (11) is fixedly connected to an output end of a servo motor (13), a motor mounting seat (14) is fixedly connected to one side of the fixed frame (10), a servo motor (13) is fixedly mounted on one side of the motor mounting seat (14), and the support plate (12) is slidably connected to the fixed frame (10); The connecting assembly comprises an electric push rod (15), one side of the support plate (12) is fixedly connected to the electric push rod (15), one end of the electric push rod (15) away from the support plate (12) is fixedly connected to an insert plate (16), the outer surface of the suspension ring (8) is fixedly connected to a positioning seat (17), the drag rod (6) is arranged above the positioning groove (9), and the inner dimension of the positioning groove (9) is larger than the outer dimension of the drag rod (6), the outer surface of the probe rod (2) is sleeved with a limit ring (18), the limit ring (18) is fixedly connected to the probe rod (2) via a positioning handle (19), and the outer surface of the probe rod (2) is provided with a scale bar (22), the size of the insert plate (16) is smaller than the inner groove size of the positioning seat (17), and the insert plate (16) can be inserted into the positioning seat (17).

2. A self-correcting magnetostrictive liquid level gauge according to claim 1, characterized in that: The interior of the suspension ball (4) is hollow, the outer surface of the probe rod (2) is fixedly connected to a limiting protrusion (20), and the interior of the suspension ball (4) is provided with a limiting groove (21) that matches the limiting protrusion (20).

3. A method for using a self-correcting magnetostrictive liquid level gauge according to any one of claims 1 to 2, characterized in that: The method of use is as follows: When the liquid level needs to be measured; S1 The staff can determine the density of the liquid to be measured and the number of layers of the liquid surface to be measured; S2: According to the number of layers of the determined liquid, the same number of suspension balls (4) can be installed on the probe rod (2), and then according to the density of the liquid, the sealing cover (5) on the suspension ball (4) is opened, water is added into the interior, and the weight of the suspension ball (4) is adjusted so that the suspension ball (4) is suspended on the liquid surface; S3 inserts the liquid level meter into the solution barrel, and fixes the fixing plate (1) to the top of the solution barrel; S4 As the liquid level inside the solution barrel rises, the suspension ball (4) moves on the probe rod (2), and the height of the liquid surface can be measured.

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