Cable float type liquid level switch measuring system

Abstract

The invention relates to a cable float type liquid level switch measuring system. The liquid level switch measuring system comprises an outer shell and an inner shell. The inner shell is arranged in the outer shell so as to divide the interior of the outer shell into an upper part and a lower part; the upper part is provided with a microswitch unit, the microswitch unit is provided with a magnetic conductive element, the lower part is provided with a floater unit, and one end of the floater unit is provided with a magnetic element; when liquid enters the lower part and the liquid level rises, the floater unit drives the magnetic element to move up and down, and the magnetic field of the magnetic element acts on the magnetic conducting element, so that the microswitch unit is triggered to act and generate a switching signal. Opening and closing of a circuit are controlled through the floater along with rising and falling of the liquid level, and therefore monitoring of the liquid level is achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of liquid level measurement, and more particularly to a cable float type liquid level switch measurement system. Background Art

[0002] In the field of liquid level measurement and control, float level switches are commonly used. Mercury switches primarily implement internal switches. These utilize the mercury's position changes as the float moves up and down, connecting or disconnecting the two metal electrodes within a glass tube to achieve a normally open or normally closed state. However, mercury switches have numerous drawbacks: the glass tube is fragile and susceptible to damage during use and transportation; mercury itself is toxic and complex, necessitating a simple, reliable level switch for liquid level measurement. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to provide a cable float type liquid level switch measurement system to address the problems of the prior art mercury switch being fragile, toxic and having a complex structure. A cable float type liquid level switch measurement system is provided.

[0004] The technical solution adopted by the present invention to solve the technical problem is: constructing a cable float type liquid level switch measurement system, which can be installed on the inner wall of the spent fuel pool, and the liquid level switch measurement system includes an outer shell and an inner shell; the inner shell is arranged in the outer shell to divide the interior of the outer shell into an upper part and a lower part;

[0005] The upper part is provided with a micro switch unit, the micro switch unit is provided with a magnetic conductive element, the lower part is provided with a float unit, and one end of the float unit is provided with a magnetic element;

[0006] When liquid enters the lower part and the liquid level rises, the float unit drives the magnetic element to move up and down, and the magnetic field of the magnetic element acts on the magnetic conductive element, thereby triggering the micro switch unit to operate and generate a switch signal.

[0007] In one embodiment, the device further comprises a signal transmission unit for receiving the switch signal and transmitting the signal to an external instrument.

[0008] In one embodiment, the inner shell is in the shape of a groove, the groove extends upward into the upper portion, and the magnetic element is located in the groove;

[0009] The float unit includes a float element. One end of the float element is connected to the magnetic element through a connecting rod to drive the magnetic element to move up and down in the groove of the inner shell.

[0010] In one embodiment, a limiting ring is provided on the connecting rod, the diameter of the limiting ring is larger than the width of the groove of the inner shell, and the position of the limiting ring on the connecting rod can be adjusted to limit the up and down movement range of the float element.

[0011] In one embodiment, the other end of the float element is connected to a counterweight rod for adjusting the balance state and up and down movement speed of the float element.

[0012] In one embodiment, the micro switch unit includes a balancing device, an actuating element, and a counterweight;

[0013] One end of the balancing device is connected to the magnetic conductive element, and the other end is connected to the counterweight block. The action element is arranged at the counterweight end of the balancing device and connected to the signal receiving unit.

[0014] When the liquid level rises, the float element drives the magnetic element to move upward, and the magnetic field of the magnetic element acts on the magnetic conductive element, causing the balancing device to lose balance, and the actuating element is actuated to generate a switch signal and transmit it to the signal receiving unit;

[0015] When the liquid level drops, the float element drives the magnetic element to move downward, the magnetic field weakens, and the action element resets and stops transmitting the switch signal to the signal receiving unit.

[0016] In one embodiment, the micro switch unit further comprises a spring element and a straight handle element;

[0017] The counterweight end of the balancing device is connected to the spring element via the straight handle element, and the spring element is connected to the signal receiving unit via the action element;

[0018] When the liquid level rises, the balancing device loses balance, the straight handle element drives the spring element to be compressed, and the action element generates the switching signal and transmits it to the signal receiving unit;

[0019] When the liquid level drops, the straight handle element drives the spring element to return to its original state, and the action element resets and stops transmitting the switch signal.

[0020] In one embodiment, the liquid level switch measurement system further includes a hysteresis adjustment unit connected to the signal transmission unit, wherein the hysteresis adjustment unit is used to determine the hysteresis value of the liquid level switch device according to the switch signal, and to determine whether the liquid level switch measurement system needs to be adjusted according to the hysteresis value.

[0021] In one embodiment, determining whether the liquid level switch measurement system needs to be adjusted according to the hysteresis value includes:

[0022] Determine whether the hysteresis value meets a preset hysteresis range;

[0023] If satisfied, it is determined that the liquid level switch measurement system needs to be adjusted.

[0024] In one embodiment, when the hysteresis adjustment unit determines that the liquid level switch measurement system needs to be adjusted, the adjustment is achieved by adjusting the magnetic field strength of the magnetic element, the weight of the counterweight, or the position of the limit ring on the connecting rod.

[0025] The present invention has the beneficial effect of providing a cable float-type liquid level switch measurement system, comprising an outer shell and an inner shell; the inner shell is disposed within the outer shell to divide the interior of the outer shell into an upper portion and a lower portion; the upper portion is provided with a microswitch unit having a magnetic conductive element, and the lower portion is provided with a float unit having a magnetic element disposed at one end thereof; when liquid enters the lower portion and the liquid level rises, the float unit drives the magnetic element up and down, and the magnetic field of the magnetic element acts on the magnetic conductive element, thereby triggering the microswitch unit to operate and generate a switch signal. The present invention controls the opening and closing of a circuit by the rise and fall of the float in response to the liquid level, thereby achieving liquid level monitoring. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The present invention will be further described below with reference to the accompanying drawings and embodiments, in which:

[0027] Figure 1 This is a structural diagram of a cable float type liquid level switch measurement system of the present application;

[0028] Figure 2 This is a structural diagram of the liquid level switch of the present application;

[0029] Figure 3 This is a schematic diagram of the structure of another state of the liquid level switch of this application.

[0030] Part Number:

[0031] 1. Liquid level switch measurement system; 10. Outer shell; 20. Inner shell; 21. Upper part; 211. Micro switch unit; 2111. Magnetic element; 2112. Balancing device; 2113. Actuating element; 2114. Counterweight; 2115. Spring element; 2116. Straight handle element; 22. Lower part; 221. Float unit; 2211. Magnetic element; 2212. Float element; 2213. Connecting rod; 2214. Limiting ring; 2215. Counterweight rod; 30. Signal transmission unit. DETAILED DESCRIPTION

[0032] The present application is further described in detail below by means of specific embodiments in conjunction with the accompanying drawings. Similar elements in different embodiments are numbered with associated similar elements. In the following embodiments, many detailed descriptions are provided to enable the present application to be better understood. However, those skilled in the art will readily appreciate that some of the features may be omitted in different circumstances, or may be replaced by other elements, materials, or methods. In some cases, some operations related to the present application are not shown or described in the specification. This is to avoid the core portion of the present application being overwhelmed by excessive descriptions. For those skilled in the art, it is not necessary to describe these related operations in detail. They can fully understand the related operations based on the description in the specification and the general technical knowledge in the art.

[0033] like Figure 1 As shown, Figure 1 It is a schematic diagram of the structure of the cable float type liquid level switch measurement system 1;

[0034] The technical solution adopted by the present invention to solve the technical problem is: constructing a cable float type liquid level switch measurement system 1, which can be installed on the inner wall of the spent fuel pool. The liquid level switch measurement system 1 includes an outer shell 10 and an inner shell 20; the inner shell 20 is arranged in the outer shell 10 to divide the interior of the outer shell 10 into an upper part 21 and a lower part 22;

[0035] The upper portion 21 is provided with a micro switch unit 211, and the micro switch unit 211 is provided with a magnetic element 2111. The lower portion 22 is provided with a float unit 221, and one end of the float unit 221 is provided with a magnetic element 2211.

[0036] like Figure 2 As shown, when the liquid enters the lower part 22 and the liquid level rises, the float unit 221 drives the magnetic element 2211 to move up and down, and the magnetic field of the magnetic element 2211 acts on the magnetic conductive element 2111, thereby triggering the micro switch unit 211 to operate and generate a switch signal. The magnetic element 2211 can be circular as shown in FIG. Figure 1 The circular magnetic element 2211 connected to the limit ring and the connecting rod as shown or Figure 2 The square magnetic element 2211 is shown.

[0037] Alternatively, the float unit 221 is a float, which provides buoyancy for the movable parts. Since the float is immersed in liquid for a long time, the float must be resistant to high temperatures, acids and alkalis, and at the same time, the float must ensure sealing to prevent liquid from entering the interior of the float, which increases the weight of the float and prevents it from generating buoyancy normally. In actual production, the float shell 10 can be made of titanium alloy or stainless steel. The float processing method can be to seamlessly weld the upper and lower hemispheres to form an integral ball. This method can fully ensure airtightness and has high reliability. Another method is to combine the two hemispheres into a whole by threading the upper and lower hemispheres, and add a high-temperature and corrosion-resistant sealing ring at the joint. In order to further ensure the reliability of the float, high-temperature resistant solid foam can be filled inside the float. Even if the sealing ring fails, only a small amount of liquid can enter the interior of the float, which can still ensure the normal operation of the float.

[0038] The liquid level switch measurement system 1 of the present invention has the advantages of simple structure, high reliability, environmental protection and safety, strong applicability and rapid response. The system adopts a design of separating the outer shell 10 and the inner shell 20, which not only simplifies the overall structure, but also facilitates installation and maintenance. Through the interaction between the magnetic element 2211 and the magnetic conductive element 2111, the reliable triggering of the micro switch unit 211 is ensured, thereby improving the accuracy of the measurement. The mercury-free design eliminates the risk of mercury leakage and meets environmental protection requirements. The system is suitable for liquid level control of various containers and storage tanks, especially in applications that are cost-sensitive and do not require high-precision monitoring. It has obvious advantages. In addition, the float unit 221 responds quickly to changes in liquid level and can output switch signals in time to meet the needs of real-time monitoring.

[0039] Furthermore, the system further includes a signal transmission unit 30 for receiving a switch signal and transmitting the signal to an external instrument.

[0040] Furthermore, the inner shell 20 is in the shape of a groove, the groove extending upwardly into the upper portion 21, and the magnetic element 2211 is located in the groove;

[0041] The float unit 221 includes a float element 2212 . One end of the float element 2212 is connected to the magnetic element 2211 via a connecting rod 2213 , so as to drive the magnetic element 2211 to move up and down in the groove of the inner shell 20 .

[0042] It should be noted that the liquid level switch measurement system 1 of the present invention achieves efficient and stable liquid level measurement. The inner housing 20 is recessed and extends upward into the upper portion 21. The magnetic element 2211 is located within the recess. The float unit 221 includes a float element 2212, one end of which is connected to the magnetic element 2211 via a connecting rod 2213, thereby driving the magnetic element 2211 up and down within the recess of the inner housing 20. When the liquid level changes, the float element 2212 rises and falls accordingly, driving the magnetic element 2211 within the recess via the connecting rod 2213. The magnetic field of the magnetic element 2211 acts on the magnetic conductive element 2111 of the microswitch unit 211, triggering the microswitch to operate and generate a switching signal. This design not only improves the stability and accuracy of the system, but also enhances its durability and reliability. By reducing friction and wear between components, the system's service life is extended. Furthermore, this structural design ensures that the system maintains excellent performance under various environmental conditions, meeting various liquid level measurement requirements.

[0043] Furthermore, a limiting ring 2214 is provided on the connecting rod 2213 . The diameter of the limiting ring 2214 is larger than the width of the groove of the inner shell 20 . The limiting ring 2214 can be adjusted to the position of the connecting rod 2213 to limit the up and down movement range of the float element 2212 .

[0044] In one embodiment, the limit ring 2214 in the liquid level switch measurement system 1 is designed to precisely control the range of movement of the float element 2212. A limit ring 2214 is provided on the connecting rod 2213, and its diameter is greater than the width of the groove of the inner shell 20 to ensure that the limit ring 2214 does not slip into the groove. The position of the limit ring 2214 is adjustable. By adjusting its position on the connecting rod 2213, the range of up and down movement of the float element 2212 can be limited, thereby ensuring that the float element 2212 operates within the set liquid level range. This design improves the accuracy of liquid level measurement and the stability of the system, while protecting the float element 2212 from damage due to excessive movement. The adjustability of the limit ring 2214 also enables the system to adapt to different liquid level measurement requirements, enhancing the flexibility and applicability of the system.

[0045] like Figure 2 and Figure 3 As shown, further, the other end of the float element 2212 is connected to the counterweight rod 2215 for adjusting the balance state and the up and down movement speed of the float element 2212.

[0046] The precise weight distribution of counterweight rod 2215 ensures that float element 2212 maintains a stable equilibrium in the liquid. The speed of float element 2212's vertical movement can be controlled by adjusting the weight and position of counterweight rod 2215, thereby optimizing the response speed and stability of float element 2212. The design of counterweight rod 2215 ensures that float element 2212 rises and falls smoothly as the liquid level changes, avoiding excessive swing or instability caused by changes in buoyancy.

[0047] Counterweight rod 2215 adjusts the center of gravity of float element 2212 to ensure its stable balance in the liquid, preventing instability caused by changes in buoyancy. Counterweight rod 2215 also precisely controls the vertical movement speed of float element 2212, ensuring a moderate response speed and preventing overly rapid or slow responses. Furthermore, the design of counterweight rod 2215 ensures smooth movement of float element 2212, reducing unnecessary oscillation and improving measurement accuracy. Its adjustability also enhances the system's adaptability to varying liquid densities and viscosities, expanding its range of applications. By optimizing the motion characteristics of float element 2212, counterweight rod 2215 effectively improves system reliability and reduces the risk of false triggering and failures caused by mechanical vibration or instability.

[0048] Furthermore, the micro switch unit 211 includes a balancing device 2112, an action element 2113 and a counterweight 2114;

[0049] One end of the balancing device 2112 is connected to the magnetic element 2111, and the other end is connected to the counterweight 2114. The action element 2113 is provided at the counterweight end of the balancing device 2112 and is connected to the signal receiving unit.

[0050] When the liquid level rises, the float element 2212 drives the magnetic element 2211 to move upward. The magnetic field of the magnetic element 2211 acts on the magnetic conductive element 2111, causing the balancing device 2112 to lose balance. The actuating element 2113 is activated, generating a switch signal and transmitting it to the signal receiving unit.

[0051] When the liquid level drops, the float element 2212 drives the magnetic element 2211 to move downward, the magnetic field weakens, and the action element 2113 resets and stops transmitting the switch signal to the signal receiving unit.

[0052] It should be noted that the micro switch unit 211 has high sensitivity and can respond to changes in liquid level, and generate or stop switch signals in time, thereby improving the real-time and accuracy of the measurement. Its stability is due to the balancing device 2112 and the counterweight block 2114, which ensure the stable operation of the action element 2113 and reduce the risk of false triggering. Through the action of the magnetic field on the magnetic conductive element 2111, the micro switch unit 211 is reliably triggered, enhancing the overall reliability of the system. The direct connection between the action element 2113 and the signal receiving unit ensures the accuracy and speed of signal transmission. In addition, the design has a wide range of adaptability and is particularly suitable for a variety of liquid level change scenarios that require fast response and precise measurement, showing excellent performance.

[0053] Furthermore, the micro switch unit further includes a spring element 2115 and a straight handle element 2116;

[0054] The end of the counterweight 2114 of the balancing device is connected to the spring element via the straight handle element 2116, and the spring element is connected to the signal receiving unit via the action element 2113;

[0055] When the liquid level rises, the balancing device 2112 loses balance, the straight handle element 2116 drives the spring element 2115 to be compressed, and the action element 2113 generates a switch signal and transmits it to the signal receiving unit;

[0056] When the liquid level drops, the straight handle element 2116 drives the spring element 2115 to return to its original state, and the action element 2113 resets and stops transmitting the switch signal.

[0057] It should be noted that the microswitch contains a spring element 2115. When the liquid level changes, the spring element 2115 will react and immediately send a signal, ensuring timely and accurate measurement results. At the same time, the combination of the straight handle element 2116 and the spring element 2115 ensures smooth switch operation and prevents random triggering due to small liquid level fluctuations, thus ensuring stability. When the spring is compressed or restored, it can reliably trigger the switch without error, making the entire system reliable. Moreover, the switch and the signal receiving part are directly connected. This design not only responds quickly to liquid level changes, but also adapts to various liquid level measurement scenarios, making it particularly suitable for those places where precise and fast measurement is required.

[0058] In a specific embodiment, the micro switch unit 211 includes a balancing device 2112, an action element 2113 and a counterweight 2114; the action element further includes a spring element 2115 and a straight handle element 2116;

[0059] In one specific embodiment, the balancing device 2112 is a balance bar, and the magnetic conductive element 2111 is a permanent magnet. A balance bar with a balance structure is mounted below the microswitch, with a permanent magnet on one side and a counterweight 2114 on the other. This ensures that both ends are balanced under normal conditions. A spring element 2115 within the microswitch depresses the microswitch handle downward, causing the balance bar to tilt downward toward the counterweight 2114.

[0060] As the float rises, driving external magnetic element 2211 upward, it approaches the permanent magnet on the left side of the balance bar. As the liquid level rises, and the attraction between the two becomes greater than the spring force of the microswitch, the permanent magnet on the left side of the balance bar descends from its highest point to its lowest point (assuming a height difference of L, which is related to the length of the balance bar and the microswitch handle). Consequently, the distance between the permanent magnet on the left side of the balance bar and external magnetic element 2211 decreases by L, further increasing the attraction between them. Even if the liquid level fluctuates, causing the float to fluctuate, as long as the fluctuation range is within L, the two remain fully engaged. This engagement depresses the microswitch handle, closing it.

[0061] As the float descends, driving the external magnetic element 2211 downward, it moves away from the permanent magnet on the left side of the balance bar. As the liquid level drops, when the attraction between the two becomes less than the spring force of the microswitch, the permanent magnet on the left side of the balance bar rises from its lowest point to its highest point. Consequently, the distance between the permanent magnet on the left side of the balance bar and the external magnetic element 2211 increases by L, further reducing the attraction between them. Even if the liquid level fluctuates, causing the float to fluctuate, as long as the fluctuation range is less than L, the two remain fully separated. Once separated, the microswitch handle returns to its original position, disconnecting the microswitch. This describes the operating principle of a microswitch as a liquid level sensor. Microswitches offer the following advantages as liquid level sensors: they can withstand high current and voltage; they do not require a separate power supply to operate; and different types of liquid level switches can be implemented by matching different microswitch types with different mechanical structures. Microswitches are easy to install, cost-effective, and highly reliable.

[0062] Furthermore, the liquid level switch measurement system 1 also includes a hysteresis adjustment unit connected to the signal transmission unit 30, which is used to determine the hysteresis value of the liquid level switch device according to the switch signal, and determine whether the liquid level switch measurement system 1 needs to be adjusted according to the hysteresis value.

[0063] In one specific embodiment, a hysteresis adjustment unit is connected to the signal transmission unit 30 to monitor and analyze the switch signal in real time. When the liquid level changes, the switch signal triggers the hysteresis adjustment unit, which determines whether adjustments to the liquid level switch measurement system 1 are necessary based on a preset hysteresis value. If the liquid level change exceeds the set hysteresis range, the hysteresis adjustment unit issues an adjustment signal to ensure the accuracy and reliability of the liquid level switch measurement system 1.

[0064] Furthermore, judging whether the liquid level switch measurement system 1 needs to be adjusted according to the hysteresis value includes:

[0065] Determine whether the hysteresis value meets the preset hysteresis range;

[0066] If satisfied, it is determined that the liquid level switch measurement system 1 needs to be adjusted.

[0067] Furthermore, when the hysteresis adjustment unit determines that the liquid level switch measurement system 1 needs to be adjusted, the adjustment is achieved by adjusting the magnetic field strength of the magnetic element 2211, or the weight of the counterweight 2114, or the position of the limit ring 2214 on the connecting rod 2213.

[0068] In a specific embodiment, the liquid level switch measurement system 1 of the present invention has an adjustable hysteresis design, and the adjustment of the liquid level switch hysteresis is achieved through three structures. First, by adjusting the position of the limit ring 2214, the minimum distance between the magnetic elements 2211 is changed, thereby adjusting the maximum suction force of the magnetic elements 2211, which is suitable for on-site adjustment. Secondly, the magnetic elements 2211 with different suction forces can be fixed at the factory or replaced on-site to adapt to different measurement requirements. Finally, by configuring floats and floats of different diameters, the buoyancy is affected, and then the dead zone of the liquid level switch is adjusted. This is usually determined according to user needs at the factory and is not adjusted on-site.

[0069] The system's operating principle is based on the balance of three primary forces: the weight G of the float and its accessories, the buoyancy F, and the suction force X of the magnetic element 2211. By adjusting the relationship between these forces, the operating characteristics of the liquid level switch can be modified. For example, when the float is in the lower position of the buoyancy bowl, which is the portion of the lower portion 22 that accommodates the float.

[0070] Gravity G is balanced with buoyancy F, and suction X is zero. When the float approaches the top magnetic element 2211, the sum of suction X and buoyancy F is greater than gravity G, so that the float remains adsorbed. When the liquid level drops, causing the float to fall, the sum of suction X and buoyancy F is less than or equal to gravity G, and the float falls.

[0071] The hysteresis adjustment unit determines whether the liquid level switch measurement system 1 needs to be adjusted by judging whether the hysteresis value meets the preset range. Specifically, when the hysteresis value exceeds the preset range, the system needs to be adjusted accordingly. There are three main adjustment methods:

[0072] Adjusting the position of limit ring 2214: By changing the position of limit ring 2214 on connecting rod 2213, the minimum distance between magnetic elements 2211 can be adjusted, thereby changing the maximum suction force of magnetic elements 2211. This method is suitable for on-site adjustment and can flexibly change the dead zone of the liquid level switch.

[0073] Configuring Magnetic Elements 2211 with Different Suction Forces: Selecting magnetic elements 2211 with different suction forces can change the liquid level range required for float attraction. This method can be fixed at the factory, and magnetic elements 2211 can be replaced in the field as needed to adapt to different measurement requirements.

[0074] Configuring floats and buoys of varying diameters: The varying diameters of the float and buoyancy affect buoyancy. Smaller diameter floats require larger changes in liquid level to reduce buoyancy sufficiently for the float to fall, while larger diameter floats respond quickly to smaller changes in liquid level. This method is typically determined at the factory based on user requirements.

[0075] These three adjustment methods each have their own advantages and can be flexibly selected according to actual application scenarios and requirements to achieve precise adjustment and stable operation of the liquid level switch measurement system 1.

[0076] In addition, this system has the following beneficial effects:

[0077] The trigger system realizes the reliable output of liquid level measurement and switch signal without overturning.

[0078] The hysteresis is adjustable and can be flexibly set according to system needs.

[0079] The sensing component can be kept away from the medium to avoid being affected by impurities in the medium.

[0080] The triggering process combines the magnetic element 2211, the micro switch and the balance structure, and uses the gravity of the float to achieve reset.

[0081] It is understandable that the above embodiments only express the preferred implementation modes of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the patent scope of the present invention. It should be pointed out that for ordinary technicians in this field, without departing from the concept of the present invention, the above technical features can be freely combined, and several deformations and improvements can be made, all of which fall within the scope of protection of the present invention. Therefore, all equivalent changes and modifications made to the scope of the claims of the present invention should fall within the scope of coverage of the claims of the present invention.

Claims

1. A cable float type liquid level switch measurement system, characterized in that: The liquid level switch measurement system can be arranged on the inner wall of the spent fuel pool, and the liquid level switch measurement system includes an outer shell and an inner shell; the inner shell is arranged in the outer shell to divide the interior of the outer shell into an upper part and a lower part; The upper part is provided with a micro switch unit, the micro switch unit is provided with a magnetic conductive element, the lower part is provided with a float unit, and one end of the float unit is provided with a magnetic element; When liquid enters the lower part and the liquid level rises, the float unit drives the magnetic element to move up and down, and the magnetic field of the magnetic element acts on the magnetic conductive element, thereby triggering the micro switch unit to operate and generate a switch signal.

2. The cable float type liquid level switch measurement system according to claim 1, characterized in that: The device also includes a signal transmission unit for receiving the switch signal and transmitting the signal to an external instrument.

3. The cable float type liquid level switch measurement system according to claim 2, characterized in that: The inner shell is in the shape of a groove, the groove extends upward into the upper portion, and the magnetic element is located in the groove; The float unit includes a float element. One end of the float element is connected to the magnetic element through a connecting rod to drive the magnetic element to move up and down in the groove of the inner shell.

4. The cable float type liquid level switch measurement system according to claim 3, characterized in that: The connecting rod is provided with a limiting ring, the diameter of which is larger than the width of the groove of the inner shell, and the position of the limiting ring on the connecting rod can be adjusted to limit the up and down movement range of the float element.

5. The cable float type liquid level switch measuring system according to claim 4, characterized in that: The other end of the float element is connected to the counterweight rod, which is used to adjust the balance state and the up and down movement speed of the float element.

6. The cable float type liquid level switch measurement system according to claim 5, characterized in that: The micro switch unit includes a balancing device, an action element and a counterweight; One end of the balancing device is connected to the magnetic conductive element, and the other end is connected to the counterweight block. The action element is arranged at the counterweight end of the balancing device and connected to the signal receiving unit. When the liquid level rises, the float element drives the magnetic element to move upward, and the magnetic field of the magnetic element acts on the magnetic conductive element, causing the balancing device to lose balance, and the actuating element is actuated to generate a switch signal and transmit it to the signal receiving unit; When the liquid level drops, the float element drives the magnetic element to move downward, the magnetic field weakens, and the action element resets and stops transmitting the switch signal to the signal receiving unit.

7. The cable float type liquid level switch measurement system according to claim 6, characterized in that: The micro switch unit further comprises a spring element and a straight handle element; The counterweight end of the balancing device is connected to the spring element via the straight handle element, and the spring element is connected to the signal receiving unit via the action element; When the liquid level rises, the balancing device loses balance, the straight handle element drives the spring element to be compressed, and the action element generates the switching signal and transmits it to the signal receiving unit; When the liquid level drops, the straight handle element drives the spring element to return to its original state, and the action element resets and stops transmitting the switch signal.

8. The cable float type liquid level switch measurement system according to claim 7, characterized in that: The liquid level switch measurement system also includes a hysteresis adjustment unit connected to the signal transmission unit, and the hysteresis adjustment unit is used to determine the hysteresis value of the liquid level switch device according to the switch signal, and to determine whether the liquid level switch measurement system needs to be adjusted according to the hysteresis value.

9. The cable float type liquid level switch measurement system according to claim 8, characterized in that: Determining whether the liquid level switch measurement system needs to be adjusted according to the hysteresis value includes: Determine whether the hysteresis value meets a preset hysteresis range; If satisfied, it is determined that the liquid level switch measurement system needs to be adjusted.

10. The cable float type liquid level switch measurement system according to claim 9, characterized in that: When the hysteresis adjustment unit determines that the liquid level switch measurement system needs to be adjusted, the adjustment is achieved by adjusting the magnetic field strength of the magnetic element, the weight of the counterweight, or the position of the limit ring on the connecting rod.

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