Magnetic induction liquid level meter and liquid level detection system

Abstract

The utility model provides a magnetic induction liquid level meter and a liquid level detection system. The magnetic induction liquid level meter is directly installed on a magnetic turning plate liquid level meter of a storage tank through an external binding type installation module. In the use process, when the liquid level in the storage tank changes, the magnetic floater of the magnetic turning plate liquid level meter is driven to move up and down, in the moving process of the magnetic floater, the magnetic coupling principle is utilized, a position signal of the magnetic floater is obtained, and the position signal is processed by the transmitter and then sent to a production far-end monitoring assembly. And the effects of on-site monitoring and remote monitoring of the liquid level of the storage tank are achieved. The magnetic induction liquid level meter provided by the utility model is combined with a magnetic turning plate liquid level meter which is arranged on the storage tank in the prior art, so that the magnetic induction liquid level meter does not need to be inserted into the storage tank and does not need to reform the structure of the storage tank, and the problems of high equipment maintenance difficulty and low equipment maintenance cost caused by far-end liquid level monitoring in the prior art are solved. And when a fault occurs, the whole chemical production process can be influenced.

Description

Technical Field

[0001] This utility model belongs to the technical field of liquid level measurement equipment in chemical production, specifically relating to a magnetic induction liquid level gauge and a liquid level detection system. Background Technology

[0002] Chemical production often involves high temperatures, high pressures, and flammable, explosive, or toxic and hazardous media. If the liquid level becomes uncontrolled (such as a storage tank overflow), it can lead to serious accidents such as leaks, fires, and explosions. Liquid level measurement provides data support for safety control systems by monitoring the liquid level in real time within equipment, ensuring that the liquid level remains within a safe range. Therefore, in chemical production sites, liquid level gauges are critical monitoring equipment and are of great significance for ensuring the stable operation of processes.

[0003] In existing technologies, magnetic float level gauges are often installed on the outside of storage tanks at chemical production sites for on-site liquid level monitoring. At the same time, for remote monitoring and data acquisition, insertion-type double flange level gauges or non-insertion-type double flange level gauges are also installed for remote liquid level monitoring.

[0004] However, in practical use, insertion-type dual-flange level gauges require insertion into the tank, making maintenance extremely difficult. A malfunction can disrupt the entire production process. Non-insertion-type dual-flange level gauges, based on the U-tube principle, connect to the gas and liquid phases of the container via upper and lower flanges. However, in practical applications, the vibration, temperature, and corrosion characteristics of chemical production often lead to decreased flange sealing, creating a risk of leakage and resulting in significant maintenance difficulties and disruption to the chemical production process. Therefore, existing remote level monitoring methods used in chemical production all suffer from the technical problems of high maintenance requirements and the potential impact of malfunctions on the entire chemical production process. Summary of the Invention

[0005] To address the technical problems in the background art, such as the high difficulty of equipment maintenance and the impact of malfunctions on the entire chemical production process when using insertion-type or non-insertion-type dual-flange level gauges for remote liquid level monitoring, this utility model provides a magnetic induction level gauge and liquid level detection system.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] In the first aspect, this utility model provides a magnetic induction level gauge for use in storage tanks in chemical production. The storage tank is equipped with a magnetic float level gauge, which includes: a cylinder, a transmitter module, a magnetic sensor module, and an external mounting module.

[0008] A receiving groove is provided in the cylinder along the axial direction, and the magnetic sensor module is arranged in the receiving groove along the axial direction of the cylinder.

[0009] The external mounting module is fixedly installed on the outside of the cylinder and is used to install the cylinder on the magnetic float level gauge.

[0010] The transmitter module is disposed at the upper end of the cylinder, and the transmitter module is electrically connected to the magnetic sensor module;

[0011] When the magnetic float in the magnetic level gauge changes with the liquid level, the magnetic sensor outputs a signal to the transmitter module under the action of the magnetic float, and the signal is then processed by the transmitter module and sent out.

[0012] Optionally, the magnetic sensor module includes multiple magnetic sensors, which are arranged sequentially and evenly in the receiving groove along the axial direction of the cylinder, and each magnetic sensor is electrically connected to the transmitter module.

[0013] Optionally, the magnetic sensor module further includes an insulating protective component, which extends along the axial direction of the cylinder and is disposed in the receiving groove. A plurality of magnetic sensors are sequentially and evenly installed on the inner wall of the insulating protective component along the axial direction of the cylinder.

[0014] Optionally, the insulating protective element includes heat shrink tubing and multiple insulating support elements;

[0015] The heat shrink tubing is arranged in the receiving groove along the axial direction of the cylinder, and there is a gap between it and the inner wall of the receiving groove;

[0016] Multiple magnetic sensors are sequentially and evenly installed on the inner wall of the heat shrink tubing along the axial direction of the cylinder.

[0017] Multiple insulating support members are evenly and side by side arranged between the heat shrink tubing and the inner wall of the receiving groove to support the heat shrink tubing.

[0018] Optionally, the magnetic sensor is a 360-degree XY-axis magnetic sensor.

[0019] Optionally, the lower end of the cylinder is provided with an opening, which communicates with the receiving groove;

[0020] The lower end of the cylinder is also provided with a plug, which is detachably connected to the opening.

[0021] Optionally, the transmitter module includes a transmitter housing, a transmitter, and connecting wires;

[0022] The transmitter housing has a hollow structure, and the transmitter is disposed inside the transmitter housing;

[0023] The transmitter housing is located at the upper end of the cylinder;

[0024] The connecting line electrically connects the transmitter and all of the magnetic sensors;

[0025] The transmitter is used to receive the signal output by the magnetic sensor when the level of the magnetic float in the magnetic level gauge changes, and to process and transmit the signal externally.

[0026] Optionally, the transmitter housing is detachably connected to the upper end of the cylinder.

[0027] Optionally, the magnetic induction level gauge further includes a lifting flange and a magnetic float;

[0028] The lifting flange is located at the upper end of the cylinder and close to the transmitter module;

[0029] The magnetic float is detachably fitted onto the outside of the cylinder, and there is a gap between the magnetic float and the outside of the cylinder.

[0030] Secondly, this utility model provides a liquid level detection system for chemical production, including a remote monitoring component and any of the magnetic induction liquid level gauges provided above.

[0031] The magnetic induction level gauge is mounted on the magnetic flip level gauge via an external mounting module.

[0032] The remote monitoring component is electrically connected to the transmitter module of the magnetic induction level gauge.

[0033] The beneficial effects of this utility model are:

[0034] This invention provides a magnetic induction level gauge. Utilizing an external mounting module, the gauge's cylinder can be directly installed onto a storage tank, similar to a conventional magnetic float level gauge installed on the tank, without requiring modification of the tank structure, thus reducing installation costs and complexity. A magnetic sensor module is axially positioned within a receiving groove in the cylinder. In use, the magnetic float level gauge is used for level detection at the production site. When the liquid level in the tank changes, it causes the built-in magnetic float to move up and down. During the float's movement, the magnetic sensor module uses the principle of magnetic coupling to acquire the float's position signal. This signal is then processed by a transmitter and sent to a remote monitoring unit, achieving both on-site and remote monitoring of the tank's liquid level. By combining the magnetic induction level gauge provided by this utility model with the existing magnetic float level gauge installed on the storage tank, it can be installed or replaced from the outside of the storage tank without the need to insert it into the tank or modify the tank structure. This avoids the technical problems of high equipment maintenance difficulty and the impact on the entire chemical production process when using insertion-type or non-insertion-type dual-flange level gauges for remote level monitoring in the prior art. Attached Figure Description

[0035] Figure 1 This is a schematic diagram of the magnetic induction level gauge provided in this utility model;

[0036] Figure 2 This is a schematic diagram of the magnetic induction level gauge installed on the storage tank in this utility model;

[0037] Figure 3 This is a schematic diagram of the transmitter module and the magnetic sensor module in this utility model;

[0038] Figure 4 This is a schematic diagram of the insulating protective component and the plug in this utility model;

[0039] Figure 5 This is a schematic diagram of the magnetic induction level gauge of this utility model with a lifting flange and a magnetic float.

[0040] The components include: 1. Storage tank; 11. Magnetic level gauge; 12. Magnetic float; 2. Cylinder; 21. Receiving tank; 22. Opening; 23. Plug; 3. Transmitter module; 31. Transmitter housing; 32. Transmitter; 33. Connecting wire; 4. Magnetic sensor module; 41. Magnetic sensor; 42. Insulation protection component; 421. Heat shrink tubing; 422. Insulation support component; 5. External binding installation module; 6. Lifting flange; 7. Magnetic float. Detailed Implementation

[0041] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit this utility model or its application or use. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0042] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to the present invention. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0043] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps described in these embodiments do not limit the scope of this invention. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0044] In the description of this utility model, it should be understood that the orientation or positional relationship indicated by directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" is usually based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this utility model and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this utility model. The directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

[0045] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0046] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be construed as limiting the scope of protection of this utility model.

[0047] It should be noted that, where there is no conflict, the embodiments and features in the embodiments of this utility model can be combined with each other. The present utility model will now be described in detail with reference to the accompanying drawings and embodiments.

[0048] In chemical production, high temperatures, high pressures, and the handling of flammable, explosive, or toxic media are common. Uncontrolled liquid levels (such as tank overflows) can lead to serious accidents like leaks, fires, and explosions. Liquid level measurement provides data support for safety control systems by monitoring the liquid height within equipment in real time, ensuring that the liquid level remains within a safe range. Furthermore, with the development of information technology, remote liquid level monitoring is also necessary to improve the intelligence and digitalization of chemical production, enabling comprehensive monitoring and analysis of chemical processes and improving both production efficiency and safety.

[0049] In existing technologies, magnetic level gauges are often installed on the outside of storage tanks at chemical production sites for on-site liquid level monitoring. Simultaneously, for remote monitoring and data acquisition, insertion-type or non-insertion-type dual-flange level gauges are also installed for remote liquid level monitoring. However, because insertion-type dual-flange level gauges need to be inserted into the tank, their maintenance is extremely difficult. If a malfunction occurs, the entire production line must be shut down, the tank opened for replacement and repair, disrupting the entire production process. Non-insertion-type dual-flange level gauges, based on the U-tube principle, connect to the gas and liquid phases of the container through upper and lower flanges respectively. However, in application, due to the vibration, temperature, and corrosion characteristics present in chemical production, the sealing performance at the flanges often deteriorates, creating a risk of leakage and posing significant maintenance difficulties. Furthermore, replacement or repair also requires shutting down the entire production line, disrupting the chemical production process.

[0050] The existing magnetostrictive level gauges on the market have two application methods: insertion type and non-insertion type. The insertion type requires the magnetostrictive level gauge to be inserted into the tank body, which also has the problems of inconvenient operation and high maintenance difficulty. The non-insertion type also requires its magnetic float to be placed into the tank body and a guide rod to be installed on the magnetic float to prevent the magnetic float from deviating and affecting the detection effect. In this process, the tank body still needs to be opened for placement and installation, and its operation and maintenance difficulty is still very high.

[0051] Firstly, see [the following] Figures 1 to 2This diagram illustrates a magnetic induction level gauge of the present invention. The magnetic induction level gauge is used in a storage tank 1 for chemical production. The storage tank 1 is equipped with a magnetic float level gauge 11, comprising: a cylinder 2, a transmitter module 3, a magnetic sensor module 4, and an external mounting module 5. An axially oriented receiving groove 21 is provided in the cylinder 2, and the magnetic sensor module 4 is disposed in the receiving groove 21 along the axial direction of the cylinder 2. The external mounting module 5 is fixedly disposed on the outside of the cylinder 2 for mounting the cylinder 2 onto the magnetic float level gauge 11. The transmitter module 3 is disposed at the upper end of the cylinder 2 and is electrically connected to the magnetic sensor module 4. When the magnetic float 12 in the magnetic float level gauge 11 changes with the liquid level, the magnetic sensor module 4, under the action of the magnetic float 12, outputs a signal to the transmitter module 3, which processes the signal before transmitting it externally.

[0052] In this embodiment, the external mounting module 5 allows the cylinder 2 of the magnetic induction level gauge to be directly installed onto the existing magnetic float level gauge 11 on the storage tank 1 without modifying the structure of the storage tank 1, thus reducing installation costs and complexity. A magnetic sensor module 4 is axially arranged in the receiving groove 21 of the cylinder 2. In use, the magnetic float level gauge 11 is used as a liquid level detector on the production site. When the liquid level in the storage tank 1 changes, it drives the built-in magnetic float 12 to move up and down. During the movement of the magnetic float 12, the magnetic sensor module 4 uses the principle of magnetic coupling to obtain the position signal of the magnetic float 12, and sends the position signal to the remote monitoring component of the production site after processing by the transmitter module 3, thereby realizing the on-site and remote monitoring of the liquid level of the storage tank 1.

[0053] The magnetic induction level gauge provided by this utility model can be combined with the conventionally installed magnetic float level gauge 11 on the storage tank 1. It does not need to be inserted into the storage tank 1, nor does it require structural modification of the storage tank 1. It can be installed or replaced from the outside of the storage tank 1. This avoids the technical problems of high equipment maintenance difficulty and the impact on the entire chemical production process when using insertion-type double flange level gauges or non-insertion-type double flange level gauges for remote level monitoring in the prior art.

[0054] Furthermore, the transmitter module 3 in this invention can be electrically connected to the remote monitoring component of the production line via a cable, thereby transmitting monitoring data.

[0055] Furthermore, the external binding installation module 5 in this embodiment can be selected as a clamp, strap, fixture or other installation structure known to those skilled in the art, and is not further limited in this embodiment.

[0056] In specific applications, the cylinder 2 is fixed to the outer tube of the magnetic float level gauge 11 by the external binding installation module 5, and the movement trajectory of the cylinder 2 and the magnetic float 12 are kept parallel. When the magnetic float 12 moves with the liquid level, its magnetic field change is captured by the magnetic sensor module 4. The signal is converted into a standard electrical signal (such as 4-20mA) by the transmitter module 3 and transmitted to the production remote monitoring component.

[0057] Furthermore, the cylinder 2 in this utility model can be selected as a stainless steel pipe.

[0058] Optionally, refer to Figure 3 The magnetic sensor module 4 in this utility model includes multiple magnetic sensors 41, which are arranged in a uniform manner along the axial direction of the cylinder 2 in the receiving groove 21. Each magnetic sensor 41 is electrically connected to the transmitter module 3.

[0059] In this embodiment, multiple magnetic sensors 41 are evenly distributed along the axial direction to expand the detection range, avoid single-point failure, and improve the reliability of detection. When the magnetic float 12 changes with the liquid level, the magnetic sensor 41 at the corresponding position detects and acquires the change in its magnetic field, thereby analyzing and acquiring the change signal of the liquid level in the storage tank 1, and processing and transmitting the signal through the transmitter module 3.

[0060] Specifically, depending on the accuracy requirements, a magnetic sensor 41 can be installed in the receiving groove 21 at axial intervals of 1cm to 2cm. When the accuracy requirement is high, the interval between adjacent magnetic sensors 41 can be selected as 1cm; when the accuracy requirement is low, the interval between adjacent magnetic sensors 41 can be selected as 2cm.

[0061] It should be noted that those skilled in the art can select the spacing between adjacent magnetic sensors 41 according to actual production and usage needs, and no further limitation is made in this embodiment.

[0062] Furthermore, the number of cylinder 2, receiving groove 21 and magnetic sensor 41 in this utility model can be further designed according to actual usage requirements.

[0063] Optionally, refer to Figure 3 The magnetic sensor module 4 in this utility model also includes an insulating protective component 42. The insulating protective component 42 extends along the axial direction of the cylinder 2 and is disposed in the receiving groove 21. Multiple magnetic sensors 41 are installed sequentially and evenly on the inner wall of the insulating protective component 42 along the axial direction of the cylinder 2.

[0064] In this embodiment, the magnetic sensor 41 is isolated from the metal cylinder 2 by the insulating protective component 42 to prevent short circuits or electromagnetic interference and ensure the accuracy of liquid level detection.

[0065] Optionally, refer to Figure 4 The insulating protective component 42 in this utility model includes a heat shrink tubing 421 and a plurality of insulating support components 422; the heat shrink tubing 421 is arranged in the receiving groove 21 along the axial direction of the cylinder 2 and has a gap between it and the inner wall of the receiving groove 21; a plurality of magnetic sensors 41 are installed sequentially and evenly on the inner wall of the heat shrink tubing 421 along the axial direction of the cylinder 2; a plurality of insulating support components 422 are evenly and side by side arranged between the heat shrink tubing 421 and the inner wall of the receiving groove 21 for supporting the heat shrink tubing 421.

[0066] In this embodiment, the position of the magnetic sensor 41 is fixed by a combination of heat shrink tubing 421 and insulating support 422, which provides insulation and prevents displacement caused by vibration. At the same time, the gap design between the heat shrink tubing 421 and the receiving groove 21 allows for a certain degree of thermal expansion and contraction deformation, adapting to temperature changes in the chemical environment.

[0067] Furthermore, the gap between the heat shrink tubing 421 and the inner wall of the receiving groove 21 can be 2mm to 10mm, specifically, 2mm, 5mm, 8mm or 10mm can be selected.

[0068] Specifically, the insulating support 422 can be made of PVC material.

[0069] Optionally, the magnetic sensor 41 in this invention is a 360-degree magnetic sensor along the XY axis.

[0070] In this embodiment, the magnetic sensor 41 is a 360-degree XY-axis magnetic sensor, which can detect the components of the magnetic field in both the X and Y axes, thereby achieving comprehensive perception of changes in the direction, angle, or position of the magnetic field. It has a 360-degree measurement range, which can cover magnetic field changes in the entire plane, thus providing accurate measurement data.

[0071] Specifically, a 360-degree magnetic sensor of type TLE493D can be used.

[0072] Optionally, refer to Figure 4 In this utility model, the lower end of the cylinder 2 is provided with an opening 22, which is connected to the receiving groove 21; the lower end of the cylinder 2 is also provided with a plug 23, which is detachably connected to the opening 22.

[0073] In this embodiment, an opening 22 and a plug 23 are provided at the lower end of the cylinder 2, so that components such as the magnetic sensor module 4 in the receiving groove 21 can be replaced and repaired through the plug 23 and the opening 22.

[0074] Furthermore, the opening 22 of the cylinder 2 is a machined threaded hole, and the plug 23 is made of stainless steel and sealed with PTFE tape.

[0075] Optionally, refer to Figure 3The transmitter module 3 in this utility model includes a transmitter housing 31, a transmitter 32, and a connecting line 33. The transmitter housing 31 has a hollow structure, and the transmitter 32 is disposed inside the transmitter housing 31. The transmitter housing 31 is disposed at the upper end of the cylinder 2. The connecting line 33 electrically connects the transmitter 32 and all the magnetic sensors 41. The transmitter 32 is used to receive the signal output by the magnetic sensor 41 when the liquid level of the magnetic float 12 in the magnetic level gauge 11 changes, and then transmits the processed signal externally.

[0076] In this embodiment, the transmitter housing 31 is used to house the transmitter 32 to prevent the transmitter 32 from aging due to chemical contamination; the magnetic sensor 41 and the transmitter 32 are connected by a connecting line 33, and the signal detected by the magnetic sensor 41 is transmitted to the transmitter 32. After being processed by the transmitter 32, the signal is sent out to realize remote monitoring of the liquid level of the storage tank 1.

[0077] Optionally, the transmitter housing 31 in this invention can be detachably connected to the upper end of the cylinder 2.

[0078] In this embodiment, the transmitter housing 31 is detachably connected to the upper end of the cylinder 2, which facilitates the disassembly and maintenance of the transmitter module 3 and improves work efficiency.

[0079] Optionally, refer to Figure 5 The magnetic induction level gauge of this utility model also includes a lifting flange 6 and a magnetic float 7; the lifting flange 6 is set at the upper end of the cylinder 2 and close to the transmitter module 3; the magnetic float 7 is detachably sleeved on the outside of the cylinder 2, and there is a gap between the magnetic float 7 and the outside of the cylinder 2.

[0080] In this embodiment, a detachable magnetic float 7 and a lifting flange 6 are provided, enabling the magnetic induction level gauge of this invention to be used in an insertion-type configuration. Specifically, the cylinder 2 is suspended above the tank 1 or other liquid storage device via the lifting flange 6, and part of the cylinder 2 is inserted into the liquid, with the magnetic float 7 floating on the liquid surface. When the liquid level changes, the liquid level causes the magnetic float 7 to move up and down along the cylinder 2, allowing the magnetic sensor 41 at the corresponding position to detect the change in magnetic field, thereby analyzing and acquiring liquid level data. The magnetic induction level gauge in this embodiment has a wider range of applications.

[0081] Secondly, this utility model also provides a liquid level detection system for chemical production, including a remote monitoring component and any of the above-mentioned magnetic induction liquid level gauges; a magnetic float liquid level gauge 11 is installed on the tank 1 of the chemical production; the magnetic induction liquid level gauge is installed on the magnetic float liquid level gauge 11 through an external binding installation module 5; the remote monitoring component is electrically connected to the transmitter module 3 of the magnetic induction liquid level gauge.

[0082] This embodiment provides a liquid level detection system for chemical production, which has the advantages of simple maintenance and low cost. It should be noted that the magnetic induction liquid level gauge in this embodiment has the same structure as the magnetic induction liquid level gauge in the above embodiments, and its beneficial effects are similar, so it will not be described again here.

[0083] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0084] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A magnetic induction liquid level gauge for a storage tank (1) of a chemical production, said storage tank (1) being provided with a magnetic float liquid level gauge (11), characterized in that, The magnetic induction level gauge includes a cylinder (2), a transmitter module (3), a magnetic sensor module (4), and an external mounting module (5). The cylindrical body (2) is provided with a receiving groove (21) along the axial direction, and the magnetic sensor module (4) is provided in the receiving groove (21) along the axial direction of the cylindrical body (2); The external binding installation module (5) is fixedly installed on the outside of the cylinder (2) for mounting the cylinder (2) on the magnetic float level gauge (11); The transmitter module (3) is located at the upper end of the cylinder (2), and the transmitter module (3) is electrically connected to the magnetic sensor module (4); When the magnetic float (12) in the magnetic level gauge (11) changes with the liquid level, the magnetic sensor module (4) outputs a signal to the transmitter module (3) under the action of the magnetic float (12), and the signal is sent out after being processed by the transmitter module (3).

2. The magnetic induction liquid level gauge according to claim 1, characterized in that The magnetic sensor module (4) includes multiple magnetic sensors (41). The multiple magnetic sensors (41) are arranged in sequence and evenly in the receiving groove (21) along the axial direction of the cylinder (2). Each magnetic sensor (41) is electrically connected to the transmitter module (3).

3. The magnetic induction liquid level gauge according to claim 2, characterized in that The magnetic sensor module (4) also includes an insulating protective element (42), which extends along the axial direction of the cylinder (2) and is disposed in the receiving groove (21). A plurality of magnetic sensors (41) are installed sequentially and evenly on the inner wall of the insulating protective element (42) along the axial direction of the cylinder (2).

4. The magnetic induction liquid level gauge according to claim 3, characterized in that The insulating protective component (42) includes heat shrink tubing (421) and multiple insulating support components (422). The heat shrink tubing (421) is arranged in the receiving groove (21) along the axial direction of the cylinder (2) and has a gap between it and the inner wall of the receiving groove (21); Multiple magnetic sensors (41) are sequentially and evenly installed on the inner wall of the heat shrink tubing (421) along the axial direction of the cylindrical body (2); Multiple insulating supports (422) are evenly and side by side arranged between the heat shrink tubing (421) and the inner wall of the receiving groove (21) to support the heat shrink tubing (421).

5. The magnetic induction liquid level gauge according to claim 2, characterized in that The magnetic sensor (41) is a 360-degree magnetic sensor along the XY axis.

6. The magnetic induction liquid level gauge according to claim 2, characterized in that The lower end of the cylinder (2) is provided with an opening (22), which is connected to the receiving groove (21). The lower end of the cylinder (2) is also provided with a plug (23), which is detachably connected to the opening (22).

7. The magnetic induction liquid level gauge according to claim 2, characterized in that The transmitter module (3) includes a transmitter housing (31), a transmitter (32), and a connecting wire (33). The transmitter housing (31) has a hollow structure, and the transmitter (32) is disposed inside the transmitter housing (31); The transmitter housing (31) is located at the upper end of the cylinder (2); The connecting line (33) electrically connects the transmitter (32) and all the magnetic sensors (41). The transmitter (32) is used to receive the signal output by the magnetic sensor (41) when the liquid level of the magnetic float (12) in the magnetic level gauge (11) changes, and to process and transmit the signal.

8. The magnetic induction liquid level gauge according to claim 7, characterized in that The transmitter housing (31) is detachably connected to the upper end of the cylinder (2).

9. The magnetic induction liquid level gauge according to claim 1, characterized in that It also includes a lifting flange (6) and a magnetic float (7); The lifting flange (6) is located at the upper end of the cylinder (2) and close to the transmitter module (3); The magnetic float (7) is detachably sleeved on the outside of the cylinder (2), and there is a gap between the magnetic float (7) and the outside of the cylinder (2).

10. A liquid level detection system for use in chemical production, characterized by Includes a remote monitoring component and a magnetic induction level gauge as described in any one of claims 1 to 9; The magnetic induction level gauge is mounted on the magnetic float level gauge (11) via an external mounting module (5); The remote monitoring component is electrically connected to the transmitter module (3) of the magnetic induction level gauge.

Images