A calibration method for a segmented magnetic float level gauge

Abstract

This invention discloses a calibration method for a segmented magnetic float level gauge. The calibration method includes: providing support rods; the number of support rods is the same as the number of floats in the segmented magnetic float level gauge, and each support rod corresponds to one float; using the support rods, the magnetic floats inside the floats are sequentially lifted from the inlet at the bottom of the float to the top of the float, maintaining the position of the magnetic floats; recording the first output signal of the transmitter when at least one magnetic float is at a first preset position during the lifting process; comparing the first output signal with a first standard electrical signal to verify whether the segmented magnetic float level gauge is functioning correctly; wherein, the first standard electrical signal is the preset standard electrical signal value when the magnetic float is at the first preset position in the float. This invention provides a simple and efficient calibration method for segmented magnetic float level gauges, reducing calibration costs.

Description

Technical Field

[0001] This invention relates to the field of instrumentation technology, and in particular to a calibration method for a segmented magnetic float level gauge. Background Technology

[0002] Magnetic float level gauges can be used to measure the floodwater level within the containment of a nuclear power plant. They are used to measure the floodwater level in the containment during nuclear accident conditions, providing post-accident monitoring capabilities for operators. Since the ability of single-segment level gauges to monitor level changes is limited by the float height, which in turn is constrained by manufacturing processes, segmented magnetic float level gauges have been introduced into existing technology. To ensure the measurement accuracy of segmented magnetic float level gauges, calibration is necessary.

[0003] The existing calibration method involves gradually filling the float of the level gauge with water to change the position of the magnetic float inside the float, and then measuring the current output by the transmitter to complete the instrument calibration. However, the existing calibration method has the following problems:

[0004] 1) The operation of filling and draining the float is complicated and the verification efficiency is low; in addition, the float includes a bottom water inlet and a top water outlet, both of which are difficult to seal to maintain the water level. During the verification, liquid leakage or even water runoff is likely to occur, which will bring safety hazards.

[0005] 2) The wet calibration method requires connecting a bypass level plate to each float to determine the water level inside the float, thus resulting in high calibration costs. Furthermore, the preparation steps before calibration involve the installation of multiple pipe fittings and bypass level plates, making the calibration process cumbersome. Additionally, this method is not very practical in real-world application scenarios (where space is limited and the total height reaches over ten meters), making it impossible to perform calibration based on actual installation conditions.

[0006] Therefore, existing verification methods suffer from high verification costs, complex operations, and low efficiency. Summary of the Invention

[0007] This invention provides a calibration method for segmented magnetic float level gauges, enabling simple and efficient calibration of segmented magnetic float level gauges and reducing calibration costs.

[0008] This invention provides a calibration method for a segmented magnetic float level gauge, comprising:

[0009] Provide support rods; the number of support rods is the same as the number of floats in the segmented magnetic float level gauge, and the support rods correspond one-to-one with the floats;

[0010] Using the support rod, the magnetic floats inside the float are sequentially lifted from the water inlet at the bottom of the float to the top of the float, and the position of the magnetic floats is maintained; the first output signal of the transmitter is recorded when at least one of the magnetic floats is in a first preset position during the lifting process.

[0011] The first output signal is compared with the first standard electrical signal to verify whether the segmented magnetic float level gauge is normal; wherein, the first standard electrical signal is the preset standard electrical signal value of the magnetic float when it is in the first preset position in the float.

[0012] Optionally, the first preset position is the top of the pontoon.

[0013] Optionally, the number of the floats is n, and each float corresponds to one of the first standard electrical signals; the i-th first standard electrical signal is less than the (i+1)-th first standard electrical signal; i is a positive integer less than n.

[0014] Optionally, the first output signal of the transmitter is recorded when all the magnetic floats are in the first preset position during the lifting process.

[0015] Optionally, after all the magnetic floats have been lifted to the top of the pontoon, the method further includes:

[0016] Using the support rod, the magnetic floats inside the buoy are controlled to descend from the top to the bottom of the buoy in reverse order, and the position of the magnetic floats is maintained; the second output signal of the transmitter is recorded when at least one of the magnetic floats is in a second preset position during the descent.

[0017] The second output signal is compared with the second standard electrical signal to verify whether the segmented magnetic float level gauge is normal; wherein, the second standard electrical signal is the preset standard electrical signal value of the magnetic float when it is in the second preset position in the float.

[0018] Optionally, the number of the floats is at least two, and each float corresponds to one of the second standard electrical signals;

[0019] The second preset position is lower than the first preset position; correspondingly, for the same float, the second standard electrical signal is less than the first standard electrical signal.

[0020] Optionally, the second preset position is the bottom of the pontoon.

[0021] Optionally, the support rod includes: a support rod sleeve, an inner rod, a support claw, and a handle;

[0022] The inner rod is movably disposed within the support rod sleeve; the support claw is connected to the top end of the inner rod, and the handle is connected to the bottom end of the inner rod.

[0023] The handle is used to move the inner rod downwards when the position of the support sleeve remains unchanged, thereby retracting the claw into the top of the support sleeve; or to move the inner rod upwards to release the claw.

[0024] Optionally, before lifting the magnetic float inside the float from the inlet at the bottom of the float to the top of the float using the support rod, the method further includes:

[0025] Keeping the claw retracted into the support rod sleeve, extend the support rod sleeve into the water inlet at the bottom of the corresponding float;

[0026] Release the claws so that they lift the bottom of the magnetic float.

[0027] Optionally, the calibration method for the segmented magnetic float level gauge further includes:

[0028] The support sleeve is marked with a scale according to the effective movement distance of the magnetic float in the float; the scale is used to characterize the movement distance of the magnetic float in the float.

[0029] The calibration method for segmented magnetic float level gauges provided in this invention eliminates the need for liquid throughout the process. Instead, calibration is achieved by supporting the magnetic float with a support rod, fundamentally solving the difficulties of filling and draining water associated with wet calibration methods. Specifically, the support-type calibration method technically avoids the risks to calibration personnel and equipment caused by leaks and spills inherent in wet calibration methods. Furthermore, it avoids the use of tools for filling, draining, and sealing, effectively simplifying the calibration steps, improving calibration efficiency, and reducing costs. Moreover, by extending the support rod into the water inlet at the bottom of the float to move the magnetic float, operations such as disassembling and assembling the bottom flange of the float are avoided, further simplifying the calibration steps and improving efficiency. Therefore, compared to existing technologies, this invention provides a simple and efficient calibration method for segmented magnetic float level gauges, while reducing calibration costs.

[0030] It should be understood that the description in this section is not intended to identify key or essential features of the embodiments of the present invention, nor is it intended to limit the scope of the invention. Other features of the invention will become readily apparent from the following description. Attached Figure Description

[0031] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0032] Figure 1 This is a schematic diagram of the structure of a segmented magnetic float level gauge provided in an embodiment of the present invention;

[0033] Figure 2 This is a schematic diagram of the structure of a measurement component provided in an embodiment of the present invention;

[0034] Figure 3 This is a schematic diagram of the structure of a water outlet provided in an embodiment of the present invention;

[0035] Figure 4 This is a flowchart illustrating a calibration method for a segmented magnetic float level gauge provided in an embodiment of the present invention.

[0036] Figure 5 This is a flowchart illustrating another calibration method for a segmented magnetic float level gauge provided in an embodiment of the present invention.

[0037] Figure 6 This is a schematic diagram of the structure of a support rod provided in an embodiment of the present invention;

[0038] Figures 7-10 This is a schematic diagram of the movement of the support rod during the verification process provided in an embodiment of the present invention. Detailed Implementation

[0039] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of the present invention.

[0040] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this invention are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of the invention described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process or method comprising a series of steps is not necessarily limited to those explicitly listed, but may include other steps not explicitly listed or inherent to such processes or methods.

[0041] As described in the background section, existing verification methods suffer from high verification costs, complex operations, and low efficiency. The following section will first combine... Figures 1-3 The structure and working principle of the segmented magnetic float level gauge are explained.

[0042] See Figures 1-3 The segmented level gauge includes multiple measuring components and a transmitter 40. The multiple measuring components are connected sequentially via cables, with the last measuring component connected to the transmitter 40 via a cable. Each measuring component includes a float 10, a magnetic float 20 (equipped with magnetic components) disposed within the float 10, and a reed switch resistor assembly 30 fixed to the outside of the float 20. The reed switch resistor assembly 30 is a magnetically sensitive element. See details... Figure 2 The float 10 has a water outlet 12 at the top and a water inlet 11 at the bottom, and the bottom of the float 10 is equipped with a bottom flange 13. Both the water inlet 11 and the water outlet 12 can be configured as follows: Figure 3 The mesh pattern is shown. Furthermore, a spring 14 can be fixedly installed at the bottom of the float 10 as a buffer device when the magnetic float 20 falls. The measurement principle of a single measuring component is as follows: liquid enters the float 10 through the inlet 11, causing the magnetic float 20 to float; the magnetic components carried by the magnetic float 20 control the on / off state of the reed switch resistor assembly 30 through magnetic coupling, thereby changing the resistance value of the reed switch resistor assembly 30.

[0043] by Figure 1Taking a liquid level gauge comprising five measuring components as an example, in actual use, the five measuring components are installed at different heights within the liquid container. During installation, for two adjacent floats 10, the height difference between the top of the lower float 10 and the bottom of the upper float 10 should be within the allowable range. The measuring components are defined as 1-5 from low to high. The top of the reed switch resistor assembly 30 in one measuring component is electrically connected to the bottom of the reed switch resistor assembly 30 in the next measuring component via a wire; the top of the reed switch resistor assembly 30 in the fifth measuring component is connected to the transmitter 40. The transmitter 40 outputs a current signal IOUT based on the resistance of each segment of the reed switch resistor assembly 30 to characterize the liquid level height. Specifically, the liquid enters the float 10 from the bottom of the lowest point, and the liquid level successively submerges the five measuring components from low to high. For example, in one measuring assembly, the lower the position of the magnetic float 20, the greater the resistance of the reed switch resistor assembly 30; the resistance of the reed switch resistor assembly 30 changes linearly with the position of the magnetic float 20. Thus, from the moment the magnetic float 20 in the first measuring assembly is at the bottom of the float 10 until the magnetic float 20 in the fifth measuring assembly is at the top of the float 10, the current signal IOUT output by the transmitter 40 gradually increases; the range of the current signal IOUT output by the transmitter 40 is, for example, 4-20mA.

[0044] In existing technologies, the calibration of such level gauges typically employs a wet calibration method, which involves equipping each measuring component with a bypass level plate. This calibration method has the following problems:

[0045] 1. Due to the structure of the float 10, it is difficult to seal the inlet 11 and outlet 12 of the float 10. During the test, leakage or even water runoff may occur, which may pose a safety hazard to personnel and equipment below.

[0046] 2. Since both the inlet 11 and the outlet 12 are mesh, it is difficult and inefficient to fill and drain the float 10 during the calibration period.

[0047] 3. Existing technologies involve the installation of dozens of pipe fittings and glass liquid level plates, which are not very practical and difficult to implement in actual application scenarios.

[0048] 4. According to the inventor's analysis, the existing technology can only support the calibration of the level gauge when all floats 10 are placed on the same plane (i.e., calibration before instrument installation), and cannot be applied to the calibration scenario after the instrument is installed in sequence according to height.

[0049] Based on the above research, this invention provides a calibration method for a segmented magnetic float level gauge. This method uses a dry calibration method, which is simple to operate and easy to implement. Figure 4 This is a flowchart illustrating a calibration method for a segmented magnetic float level gauge provided in an embodiment of the present invention. See also... Figure 4 The verification method includes the following steps:

[0050] S110. Provide support rods; the number of support rods is the same as the number of floats in the segmented magnetic float level gauge, and the support rods and floats correspond one-to-one.

[0051] The length of the support rod is greater than or equal to the distance the magnetic float moves in the float to ensure calibration of the level gauge across its entire range.

[0052] S120. Using a support rod, the magnetic floats inside the float are lifted sequentially from the water inlet at the bottom of the float to the top of the float, and the position of the magnetic floats is maintained; the first output signal of the transmitter is recorded when at least one magnetic float is in the first preset position during the lifting process.

[0053] In this process, after one magnetic buoy is lifted to the top of the float by a support rod, the next magnetic buoy is lifted by another support rod; at the same time, the previous magnetic buoy must be kept at the top of the float. This is equivalent to simulating the process of liquid level rising.

[0054] S130. Compare the first output signal with the first standard electrical signal to verify whether the segmented magnetic float level gauge is normal; wherein, the first standard electrical signal is the preset standard electrical signal value when the magnetic float is in the first preset position in the float.

[0055] The system comprises n floats, where n is an integer greater than or equal to 2; each float corresponds to a first standard electrical signal; the floats are numbered 1 to 1i sequentially from low to high along the direction closest to the transmitter. The 1i-th first standard electrical signal is less than the (i+1)-th first standard electrical signal; i is a positive integer less than n. A first output signal is considered to match its corresponding first standard electrical signal when the first output signal is equal to the corresponding first standard electrical signal, or when the difference between the first output signal and the corresponding first standard electrical signal is within an allowable range. The segmented magnetic float level gauge is considered normal when all first output signals recorded in S120 match their corresponding first standard electrical signals. An abnormality in the segmented magnetic float level gauge is determined if any pair of first output signals does not match their corresponding first standard electrical signals. For example, a comparison can be performed after each recorded first output signal; or, a comparison can be performed after all first output signals have been recorded; the specific timing of the comparison is not limited here.

[0056] The calibration method for segmented magnetic float level gauges provided in this invention eliminates the need for liquid throughout the process. Instead, calibration is achieved by supporting the magnetic float with a support rod, fundamentally solving the difficulties of filling and draining water associated with wet calibration methods. Specifically, the support-type calibration method technically avoids the risks to calibration personnel and equipment caused by leaks and spills inherent in wet calibration methods. Furthermore, it avoids the use of tools for filling, draining, and sealing, effectively simplifying the calibration steps, improving calibration efficiency, and reducing costs. Moreover, by extending the support rod into the water inlet at the bottom of the float to move the magnetic float, operations such as disassembling and assembling the bottom flange of the float are avoided, further simplifying the calibration steps and improving efficiency. Therefore, compared to existing technologies, this invention provides a simple and efficient calibration method for segmented magnetic float level gauges, while reducing calibration costs.

[0057] Based on the above embodiments, optionally, in S120, the first output signal of the transmitter obtained when all magnetic floats are in the first preset position during the lifting process can be recorded to realize the verification of all measuring components and improve the verification accuracy.

[0058] Based on the above embodiments, optionally, the first preset position is the top of the float, and correspondingly, the value of the i-th first standard electrical signal is: Imin + (i / n) * (Imax - Imin); where Imin is the preset output current of the transmitter when the magnetic float in the first measuring component is located at the bottom of the float, that is, the minimum value of the range of the current signal output by the transmitter. Imax is the preset output current of the transmitter when the magnetic float in the n-th measuring component is located at the top of the float, that is, the maximum value of the range of the current signal output by the transmitter.

[0059] The above embodiments exemplify the calibration process of the level gauge under simulated liquid level rise, but are not intended to limit the present invention. In other embodiments, the liquid level can also be simulated to calibrate the level gauge.

[0060] Figure 5 This is a flowchart illustrating another calibration method for a segmented magnetic float level gauge provided in an embodiment of the present invention. See also... Figure 5 In one implementation, the verification method may optionally include:

[0061] S210, provides a support rod.

[0062] The structure of the support rod can be seen in [reference]. Figure 6For example, the support rod 100 includes a hollow support rod sleeve 110, an inner rod 120, a claw 130, and a handle 140. The inner rod 120 is movably disposed within the support rod sleeve 110; the claw 130 is connected to the top end of the inner rod 120, and the handle 140 is connected to the bottom end of the inner rod 120. The handle 140 acts as a switch to retract the claw 130 into and release it from the support rod sleeve 110 by moving the inner rod 120 up and down. Specifically, when the position of the support rod sleeve 110 remains unchanged, the handle 140 drives the inner rod 110 downward, retracting the claw 130 into the top of the support rod sleeve 110 (it can be fully or partially retracted). Figure 6 This is a schematic diagram showing the claw 130 fully retracted into the support sleeve 110. Alternatively, with the support sleeve 110 in the same position, the handle 140 moves the inner rod 120 upwards, releasing the claw 130. For example, the length of the inner rod 120 is greater than or equal to the length of the support sleeve 110 to ensure effective release of the claw 130. It should be noted that... Figure 6 In this configuration, the claw 130 and part of the inner rod 120 are located inside the support sleeve 110 and cannot be actually observed from the outside of the support sleeve 110. However... Figure 6 To clearly illustrate the structure of the support rod 100, the claw 130 and inner rod 120 inside the support rod sleeve 110 are shown.

[0063] S220. Using a support rod, the magnetic floats inside the float are lifted sequentially from the water inlet at the bottom of the float to the top of the float, and the position of the magnetic floats is maintained; the first output signal of the transmitter is recorded when at least one magnetic float is in the first preset position during the lifting process.

[0064] For a single measuring component, the process of using a support rod to lift the magnetic float from the inlet of the float to the top of the float can be found in [reference needed]. Figures 7-9 For example, the process includes: first as follows Figure 7 As shown, with the claw 130 retracted into the support rod sleeve 110, extend the support rod sleeve 110 into the water inlet 11 at the bottom of the corresponding float 10. Then, as... Figure 8 As shown, release the claw 130, allowing it to lift the bottom of the magnetic levitation 20. Move the support rod 100 upwards; the upward thrust of the support rod 100 and the gravity of the magnetic levitation 20 interact to move the magnetic levitation 20 within its range until it reaches a position as indicated. Figure 9 The location shown is the top of the pontoon 10.

[0065] S230. Determine whether the first output signal and the first standard electrical signal are fully matched; if yes, execute S240; if no, execute S270.

[0066] When the first output signal matches the first standard electrical signal completely, the next step of verification can be performed; when the first output signal does not match the first standard electrical signal completely, the level gauge can be directly determined to be abnormal.

[0067] S240. Using a support rod, the magnetic floats inside the buoy are controlled to descend from the top to the bottom of the buoy in reverse order, and the position of the magnetic floats is maintained; the second output signal of the transmitter is recorded when at least one magnetic float is in the second preset position during the descent.

[0068] In this process, after the i-th magnetic float descends to the bottom of the float 10, the (i-1)-th magnetic float is then controlled to descend; at the same time, the i-th magnetic float must be kept at the bottom of the float. This is equivalent to simulating the process of liquid level drop.

[0069] For example, for a measuring component, the process of controlling the magnetic buoy to descend from the top to the bottom of the buoy using a support rod can be found in [reference needed]. Figures 9-10 For example, the process includes: the self-magnetic levitation 20 being positioned as... Figure 9 The starting point is shown in the image. Figure 10 As shown, the support rod 100 is lowered, causing the magnetic float 20 to fall with the support rod 100 until the top of the support rod sleeve 110 is flush with the bottom of the float 10. Then, the claw 130 is retracted, causing the magnetic float 20 to descend to a position similar to... Figure 7 The location shown is the bottom of the pontoon 10.

[0070] S250. Determine whether the second output signal and the second standard electrical signal are fully matched; if yes, execute S260; if no, execute S270.

[0071] This step is equivalent to comparing the second output signal with the second standard electrical signal to verify whether the segmented magnetic float level gauge is functioning correctly. The second standard electrical signal is the preset standard electrical signal value when the magnetic float is at the second preset position within the float. Each float corresponds to one second standard electrical signal. The matching conditions can be referred to in S130 for the matching conditions between the first output signal and the first standard electrical signal, and will not be repeated here.

[0072] Optionally, the second preset position is lower than the first preset position; correspondingly, for the same buoy, the second standard electrical signal is less than the first standard electrical signal. For example, when the first preset position is the top of the buoy and the second preset position is the bottom of the buoy, the value of the i-th first standard electrical signal can be set to be equal to the value of the (i+1)-th second standard electrical signal; or, considering the difference in installation height of the buoys, the (i+1)-th second standard electrical signal can be set to be slightly greater than the i-th first standard electrical signal, with the difference determined based on the difference in installation height.

[0073] The S260 segmented magnetic float level gauge is functioning normally.

[0074] S270, segmented magnetic float level gauge malfunction.

[0075] In summary, this embodiment achieves the calibration of the segmented magnetic float level gauge through S210-S270 without the need for water, which fundamentally solves the difficulties caused by filling and draining water and the risks caused by leaks, and can improve test efficiency, thereby improving the safety and economic benefits of nuclear power plants.

[0076] Optionally, based on the methods described above, the verification method further includes: marking the support sleeve with a scale, such that after marking... Figure 6 The scale 111 marked on the support sleeve 110 is used to characterize the distance the magnetic levitation float travels within the float. This scale 111 can be determined based on the effective travel distance (effective range) of the magnetic levitation float within the float and the method of fixing the magnetic levitation float, etc. Exemplarily, this step can be performed when the support rod is provided.

[0077] This setup allows the movement distance and position of the magnetic levitation float within the float pod to be determined by reading scale 111, enabling the calibration method to support verification of the magnetic levitation float in various positions. For example, the 0-scale line is marked at the position where the support sleeve 110 is flush with the bottom flange surface when the magnetic levitation float 20 is at the bottom of the float pod 10. During movement, by reading scale 111 at the position where the support sleeve 110 is flush with the bottom flange surface, the position of the magnetic levitation float 20 within the float pod can be determined. This allows the standard value of the transmitter's output signal at that position to be found, thus verifying the actual output signal of the transmitter.

[0078] The following is based on Figure 1 Taking the liquid level gauge as an example, let's define the five measuring components from bottom to top as number 1 to 5, and explain their specific calibration process. The calibration process includes:

[0079] 1. Confirm that the initial real reading of the instrument is 0%.

[0080] The instrument real number can be understood as a percentage of the value calculated according to the following formula: (Ireal-Imin) / (Imax-Imin), where Ireal represents the actual value of the current signal IOUT output by transmitter 40.

[0081] 2. Keep the claws retracted into the support rod sleeve, insert the first support rod into the bottom inlet of the first float, open the claws to support the first magnetic float, and then move the support rod upward according to the scale of the support rod so that the magnetic float slowly reaches the top of the float. Check whether the instrument reading is 20%.

[0082] 3. Keep the claws retracted into the support rod sleeve, insert the second support rod into the bottom inlet of the second float, open the claws to support the second magnetic float, and then move the support rod upward according to the scale of the support rod so that the magnetic float slowly reaches the top of the float. Check if the instrument reading is 40%.

[0083] 4. Keep the claws retracted into the support rod sleeve, insert the third support rod into the bottom inlet of the third float, open the claws to support the third magnetic float, and then move the support rod upward according to the scale of the support rod so that the magnetic float slowly reaches the top of the float. Check if the instrument reading is 60%.

[0084] 5. Keep the claws retracted into the support rod sleeve, insert the fourth support rod into the bottom inlet of the fourth float, open the claws to support the fourth magnetic float, and then move the support rod upward according to the support rod scale to slowly move the magnetic float to the top of the float. Check if the instrument reading is 80%.

[0085] 6. Keep the claws retracted into the support rod sleeve, insert the 5th support rod into the bottom inlet of the 5th float, open the claws to support the 5th magnetic float, and then move the support rod upward according to the support rod scale to slowly move the magnetic float to the top of the float. Check if the instrument reading is 100%.

[0086] 7. According to the scale of the support rod, slowly lower the 5th support rod until the 5th magnetic float lands at the bottom of the 5th float, and check whether the instrument reading is 80%.

[0087] 8. According to the scale of the support rod, slowly lower the fourth support rod until the fourth magnetic float lands at the bottom of the fourth float, and check whether the instrument reading is 60%.

[0088] 9. According to the scale on the support rod, slowly lower the third support rod until the third magnetic float lands at the bottom of the third float, and check if the instrument reading is 40%.

[0089] 10. According to the scale on the support rod, slowly lower the second support rod until the second magnetic float lands at the bottom of the second float, and check if the instrument reading is 20%.

[0090] 11. According to the scale of the support rod, slowly lower the first support rod until the first magnetic float lands at the bottom of the first float, and check whether the instrument reading is 0%.

[0091] During the verification process, the position of each measurement component is not limited; they can be placed side by side or according to the arrangement used in actual applications.

[0092] It should be understood that the various forms of processes shown above can be used, with steps reordered, added, or deleted. For example, the steps described in this invention can be executed in parallel, sequentially, or in different orders, as long as the desired result of the technical solution of this invention can be achieved, and this is not limited herein.

[0093] The specific embodiments described above do not constitute a limitation on the scope of protection of this invention. Those skilled in the art should understand that various modifications, combinations, sub-combinations, and substitutions can be made according to design requirements and other factors. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this invention should be included within the scope of protection of this invention.

Claims

1. A method of verifying a segmented magnetic float level gauge, characterized in that, include: Provide support rods; The number of the support rods is the same as the number of floats in the segmented magnetic float level gauge, and the support rods correspond one-to-one with the floats; Using the support rods, the magnetic floats inside the float are sequentially lifted from the water inlet at the bottom of the float to the top of the float, and the position of the magnetic floats is maintained. After one magnetic float is lifted to the top of the float by the support rod, the next magnetic float is lifted by the next support rod. At the same time, the previous magnetic float must be kept at the top of the float. The first output signal of the transmitter is recorded when at least one magnetic float is in a first preset position during the lifting process. The first output signal is compared with the first standard electrical signal to verify whether the segmented magnetic float level gauge is normal; wherein, the first standard electrical signal is the preset standard electrical signal value of the magnetic float when it is in the first preset position in the float; The support rod includes: a support rod sleeve, an inner rod, a support claw, and a handle; The inner rod is movably disposed within the support rod sleeve; the support claw is connected to the top end of the inner rod, and the handle is connected to the bottom end of the inner rod. The handle is used to move the inner rod downwards when the position of the support sleeve remains unchanged, thereby retracting the claw into the top of the support sleeve; or to move the inner rod upwards to release the claw. The length of the inner rod is greater than or equal to the length of the support sleeve to ensure the effective release of the claw.

2. The method of calibrating a segmented magnetic floater liquid level meter according to claim 1, wherein, The first preset position is the top of the pontoon.

3. The method of calibrating a segmented magnetic floater liquid level meter according to claim 1, wherein, The number of floats is n, and each float corresponds to one first standard electrical signal; the i-th first standard electrical signal is less than the (i+1)-th first standard electrical signal; i is a positive integer less than n.

4. The calibration method for the segmented magnetic float level gauge according to claim 1, characterized in that, The first output signal of the transmitter is recorded when all the magnetic floats are in the first preset position during the lifting process.

5. The calibration method for the segmented magnetic float level gauge according to any one of claims 1-4, characterized in that, After all the magnetic floats have been lifted to the top of the buoy, the process further includes: Using the support rod, the magnetic floats inside the buoy are controlled to descend from the top to the bottom of the buoy in reverse order, and the position of the magnetic floats is maintained; the second output signal of the transmitter is recorded when at least one of the magnetic floats is in a second preset position during the descent. The second output signal is compared with the second standard electrical signal to verify whether the segmented magnetic float level gauge is normal; wherein, the second standard electrical signal is the preset standard electrical signal value of the magnetic float when it is in the second preset position in the float.

6. The calibration method for the segmented magnetic float level gauge according to claim 5, characterized in that, The number of the floats is at least two, and each float corresponds to one of the second standard electrical signals; The second preset position is lower than the first preset position; correspondingly, for the same float, the second standard electrical signal is less than the first standard electrical signal.

7. The calibration method for the segmented magnetic float level gauge according to claim 5, characterized in that, The second preset position is the bottom of the pontoon.

8. The calibration method for the segmented magnetic float level gauge according to claim 1, characterized in that, Before using the support rod to lift the magnetic float inside the float from the water inlet at the bottom of the float to the top of the float, the process further includes: Keeping the claw retracted into the support rod sleeve, extend the support rod sleeve into the water inlet at the bottom of the corresponding float; Release the claws so that they lift the bottom of the magnetic float.

9. The calibration method for the segmented magnetic float level gauge according to claim 1, characterized in that, Also includes: The support sleeve is marked with scale according to the effective movement distance of the magnetic float in the float; The scale is used to characterize the distance the magnetic buoy moves within the buoy.

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