Self-aligning reaction kettle risk monitoring system

Abstract

This invention provides a self-aligning reaction vessel risk monitoring system, characterized by comprising a set of level gauges, a monitoring module, a comparison module, and a shifting module. Three sets of monitoring modules are arranged along the height of the reaction vessel. The base ring of the lowest set of monitoring modules is fixed to the reaction vessel, while the base rings of the remaining two sets of monitoring modules can move up and down within the reaction vessel. The shifting module is used to synchronize the rise and fall of the highest set of monitoring modules with the liquid level in the reaction vessel and to maintain the middle set of monitoring modules in a position precisely between the lowest and highest sets. The comparison module compares the actual monitoring value of the monitoring modules with the monitoring value under ideal conditions. This invention has the advantage of high detection accuracy, enabling online measurement of the reaction environment and reaction rate inside the reaction vessel, thereby achieving the measurement of reaction vessel safety and improving the reaction rate inside the reaction vessel.

Description

Technical Field

[0001] This invention relates to the field of risk monitoring systems for self-centering reactors, and in particular to a risk monitoring system for self-centering reactors. Background Technology

[0002] Reactors are tools used in chemical plants to realize chemical production. The normal operation of the chemical production process, and the control and guarantee of product quality and output, depend on the adaptation and normal operation of various reactors.

[0003] In the existing technology, in order to ensure the normal operation of the chemical industry, it is often necessary to conduct inspections of chemical workshops, including lines and pipelines. For reaction equipment such as reactors and separators, pressure testing or vibration testing is usually used for safety testing. However, this testing is more focused on safety. In actual production, the efficiency of chemical reactions has already begun to decline in the early stages of reactor damage. The existing technology lacks monitoring equipment that can detect problems in the early stages of reactor damage. Summary of the Invention

[0004] This invention provides a self-aligning reactor risk monitoring system with high detection accuracy. It can measure the reaction environment and reaction rate inside the reactor online, thereby enabling the measurement of reactor safety and improving the reaction rate inside the reactor.

[0005] To achieve the above objectives, the present invention adopts the following technical solution.

[0006] A self-aligning reaction vessel risk monitoring system is characterized by comprising a set of level gauges, monitoring modules, comparison modules, and displacement modules. The monitoring modules include at least a temperature monitoring module, a pH monitoring module, a product concentration monitoring module, and a reactant concentration monitoring module. Three sets of monitoring modules are arranged along the height of the reaction vessel. Each set includes a base ring extending circumferentially along the reaction vessel and several monitoring modules connected to the base ring. Monitoring modules on the same base ring extend along the extension direction of the base ring. The base ring in the lowest set of monitoring modules is fixed to the reaction vessel. The remaining modules... The base rings of the two sets of monitoring modules can move up and down within the reactor. Initially, the middle set of monitoring modules is positioned precisely between the bottom and top sets. The shifting module ensures that the top set of monitoring modules rises and falls synchronously with the liquid level in the reactor. It also maintains the middle set of monitoring modules in the exact midpoint between the bottom and top sets. The comparison module compares the actual monitoring values ​​with the ideal values. This technical solution ensures that the monitoring modules remain in one of three positions (top, middle, or bottom) when the liquid level changes, providing accurate detection.

[0007] By monitoring the internal temperature, pH value, liquid level, and reaction rate of the reactor, it is possible to monitor the internal environment and reaction rate of the reactor. The monitoring module has multiple settings in the height direction of the reactor, which enables more systematic and comprehensive monitoring of the reactor interior and improves the reliability of the monitoring results.

[0008] Preferably, the system also includes an adjustment module, which comprises a heating device, an acid / base addition component, and a reactant addition component. Based on the comparison results from the comparison module, the adjustment module can automatically adjust parameters such as temperature, pH level, and reactant concentration, thereby increasing the reaction rate inside the reactor.

[0009] Preferably, the monitoring modules are arranged in a grid pattern on the inner wall of the reactor. This forms multiple monitoring points in a grid pattern, improving the reliability of the monitoring results.

[0010] Preferably, the monitoring module is equipped with a wireless transmission module that transmits data from the monitoring module to the comparison module for storage and comparison. The monitoring module uses wireless transmission, eliminating the need for wiring to connect the inside and outside of the reactor, thus ensuring the reliability of the reaction environment inside the reactor.

[0011] Preferably, the generatrix of the outer circumferential surface of the base ring is a vertically extending straight line. The outer circumferential surface of the base ring rests flat on the inner circumferential surface of the reactor. Several vertical planes are provided on the inner circumferential surface of the base ring, and these vertical planes penetrate the upper and lower end faces of the base ring. The monitoring modules are correspondingly snapped onto these vertical planes. The fact that "the generatrix of the outer circumferential surface of the ring is a vertically extending straight line" prevents the base ring from tipping over or swaying, thereby improving the accuracy of centering the middle base ring.

[0012] Preferably, the vertical plane has a connecting hole. The inner end of the connecting hole has an inner conical section with a smaller outer end and a larger inner end, and the outer end has an outer conical section with a smaller inner end and a larger outer end. The monitoring module has a connector. The root of the connector has a root conical section that mates with the conical surface of the outer conical section. The free end of the connector has several elastic flaps distributed circumferentially around the connector. The outer surface of the free end of each elastic flap has a hook that mates with the conical surface of the inner conical section. The hook hooks onto the inner conical section, sealing the root conical section and the outer conical section together. This design prevents the connector from easily detaching, ensures a reliable seal between the connector and the connecting hole, and prevents shaking.

[0013] Preferably, the inner conical surface section is provided with several annular teeth distributed axially along the conical surface section with the tooth tips facing inward. Adjacent annular teeth form barbed grooves. The surface of the hook head that mates with the inner conical surface section is provided with several barbed teeth facing outward from the connecting hole. The barbed teeth hook into the barbed grooves to prevent the connector head from exiting the connecting hole. This improves the reliability of the seal. Because, in order to achieve a seal, the hook head and the inner end of the connecting hole are in a conical fit with a smaller outer end and a larger inner end, this fit can cause disengagement. This technical solution solves the problem of easy disengagement.

[0014] Preferably, a gap is provided between the monitoring module and the base ring, surrounding the connector. An elastic sealing ring is provided within this gap to seal the monitoring module and the base ring together, with its radially outer end extending to the periphery of the monitoring module. This allows for reliable sealing by increasing the insertion depth of the connector, compensating for wear and preventing objects from entering the gap and hindering cleaning.

[0015] Preferably, the monitoring module includes a wireless transmission module for transmitting data detected by the monitoring module to a comparison module for storage and comparison. The base ring has a hollow structure, the connecting hole extends through a vertical plane, the wireless transmission module is located inside the base ring, the connector has a tubular structure, and the wires of the monitoring module pass through the connector and into the mounting hole to connect with the wireless transmission module. The base ring has a heat-insulating structure. This design makes the wireless transmission module less susceptible to the temperature inside the reactor, improving transmission reliability.

[0016] Preferably, the upper surface of the base ring is provided with a plurality of vertically extending mounting holes penetrating the internal space of the base ring. The mounting holes include, from top to bottom, an upper conical segment (larger at the top and smaller at the bottom), a straight segment, and a lower conical segment (larger at the top and smaller at the bottom). The diameters of the lower end of the upper conical segment, the straight segment, and the upper end of the lower conical segment are equal. The upper end of the wireless transmission module has a large-diameter segment, through which the wireless transmission module is suspended on the lower conical segment. The upper conical segment is fitted with a plug that provides a conical surface fit and sealing connection. This design makes installing and removing the wireless transmission module convenient and reliable.

[0017] Preferably, the topmost monitoring module and the middle monitoring module can sink in the liquid inside the reactor under their own weight. The displacement module includes a weight suspended on the liquid surface inside the reactor, a suspension shaft fixed to the upper part of the reactor interior, a winding roller rotatably connected to the suspension shaft, and a torsion spring that drives the winding roller to rotate. The winding roller has a first take-up reel and a second take-up reel, the radius of the first take-up reel being half the radius of the second take-up reel. The base ring of the middle monitoring module is connected to the first take-up reel via a first sling, and the weight is connected to the second take-up reel via a second sling. The base ring of the topmost monitoring module is suspended from the weight via a third sling. The torsion spring drives the winding roller to rotate so that the first sling is wound onto the first take-up reel and the second sling is wound onto the second take-up reel. As the liquid level in the reactor decreases, the weight drives the winding roller to rotate against the spring force of the torsion spring. The direction of rotation of the winding roller driven by the weight is opposite to the direction of rotation driven by the spring force of the torsion spring. A specific technical solution for a shifting module is provided. It has a simple structure, is implemented mechanically, and is reliable.

[0018] The present invention has the following advantages: it can measure the reaction environment and reaction rate inside the reactor online, thereby realizing the measurement of reactor safety and improving the reaction rate inside the reactor; and it has good accuracy in detection. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of the present invention.

[0020] Figure 2 for Figure 1 A magnified view of a portion of point A.

[0021] Figure 3 This is a schematic diagram showing the connection relationship between the mounting module and the base ring.

[0022] Figure 4 for Figure 3 A magnified view of part B.

[0023] Figure 5 for Figure 4 A magnified view of a portion of point C.

[0024] Figure 6 for Figure 3 A magnified view of a portion of point D.

[0025] In the diagram: Monitoring module 1, Comparison module 2, Level gauge 7, Reactor 9, Heating coil 10, Feed port 11, Acid port 12, Alkali port 13, Feed pump 14, Acid pump 15, Alkali pump 16, End cap 17, Base ring 3, Wireless transmission module 4, Outer circumferential surface of base ring 5, Vertical plane 6, Connecting hole 18, Inner conical section 19, Outer conical section 20, Connector 21, Root conical section 22, Elastic flap 23, Hook 24, Ring tooth 25, Barbed tooth 26, Gap 27, Elastic sealing ring 28, Wire of monitoring module 30, Mounting hole 31, Upper conical section 32, Straight section 33, Lower conical section 34, Large diameter section 35, Plug 36, Weight 37, Suspension shaft 38, Winding roller 39, Torsion spring 40, First take-up reel 41, Second take-up reel 42, First sling 43, Second sling 44, Third sling 45. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of the embodiments of this invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this invention. Based on the embodiments of this invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this invention.

[0027] See Figures 1 to 6A self-regulating reactor risk monitoring system includes a monitoring module 1 and a comparison module 2. Monitoring module 1 includes a temperature monitoring module, a pH monitoring module, a product concentration monitoring module, and a reactant concentration monitoring module. It also includes at least one set of level gauges 7 to monitor the liquid level inside the reactor. The comparison module 2 compares the actual monitoring value of monitoring module 1 with the monitoring value under ideal conditions. The temperature monitoring module, pH monitoring module, product concentration monitoring module, and reactant concentration monitoring module employ corresponding functional sensors. The level gauges 7 are glass tube level gauges. By monitoring the internal temperature, pH value, liquid level, and reaction rate of the reactor, the system can monitor the internal environment and internal reaction rate of the reactor. The monitoring module is provided in three groups along the height of the reactor. Each group of monitoring modules includes a base ring 3 extending circumferentially along the reactor and several monitoring modules 1 connected to the base ring. The monitoring modules on the same base ring extend along the extension of the base ring. The base ring of the monitoring module in the lowermost group is fixed to the reactor. The base rings of the remaining two groups of monitoring modules can move up and down inside the reactor. In the initial state, the monitoring module in the middle is located in the middle between the monitoring module in the lowermost group and the monitoring module in the uppermost group. The shifting module is used to make the monitoring module in the uppermost group rise and fall synchronously with the liquid level of the reactor. The shifting module is also used to keep the monitoring module in the middle group in the middle position between the monitoring module in the lowermost group and the monitoring module in the uppermost group.

[0028] The risk monitoring system disclosed in this embodiment also includes an adjustment module, which comprises a heating device, an acid-base addition component, and a reactant addition component. Based on the comparison results of the comparison module 2, the adjustment module can automatically adjust environmental parameters such as temperature, pH value, and reactant concentration, thereby increasing the reaction rate inside the reactor. The monitoring modules 1 are arranged in a matrix on the inner wall of the reactor to form a grid. The multiple monitoring points in the grid form improve the reliability of the monitoring results and can form a monitoring layout with an approximate coordinate system. The monitoring position of a single monitoring module 1 can help determine the fault point inside the reactor. The data from the monitoring modules 1 is wirelessly transmitted to the comparison module 2 for storage and comparison. That is, the monitoring module is equipped with a wireless transmission module 4 that transmits the data from the monitoring modules to the comparison module for storage and comparison. The monitoring modules 1 use wireless transmission, eliminating the need for wiring to connect the inside and outside of the reactor, thus ensuring the reliability of the reaction environment inside the reactor.

[0029] The comparison module 2 is located outside the reactor 9, and the adjustment module is set on the wall of the reactor 9. The comparison module 2 receives and processes signals from the monitoring module wirelessly, and the division of labor and placement of each module are reasonable. Heating coils 10 are installed on the circumferential side wall of the reactor 9 to form a heating device that can heat the internal temperature of the reactor 9. A feed port 11, an acid port 12, and an alkali port 13 are provided on the upper side of the reactor 9. The feed port 11 is connected to the feed pump 14 and the material tank through a pipeline to form a reactant addition component. The acid port 12 is connected to the acid pump 15 and the acid tank through a pipeline, and the alkali port 13 is connected to the alkali pump 16 and the alkali tank through a pipeline to form an acid-alkali addition component. The heating coils 10, feed pump 14, acid pump 15, and alkali pump 16 are controlled by the control circuit of the comparison module 2.

[0030] The generatrix of the outer circumferential surface 5 of the base ring is a vertically extending straight line. The outer circumferential surface of the base ring is flat on the inner circumferential surface of the reactor. Several vertical planes 6 are provided on the inner circumferential surface of the base ring, and the vertical planes penetrate the upper and lower end faces of the base ring. The monitoring modules are correspondingly snapped onto the vertical planes. The vertical planes are provided with connecting holes 18. The inner end of the connecting hole is provided with an inner conical surface section 19 with a smaller outer end and a larger inner end, and the outer end is provided with an outer conical surface section 20 with a smaller inner end and a larger outer end. The monitoring module is provided with a connector 21. The root of the connector is provided with a root conical surface section 22 that mates with the conical surface of the outer conical surface section. The free end of the connector is provided with several elastic petals 23 distributed along the circumference of the connector. The outer surface of the free end of the elastic petals is provided with a hook 24 that mates with the conical surface of the inner conical surface section. The hook hooks onto the inner conical surface section, so that the root conical surface section and the outer conical surface section are sealed together. The inner conical section has several annular teeth 25 distributed axially along the conical section with their tips facing inward. Adjacent annular teeth form barbed grooves. The hook head has several barbed teeth 26 on its mating surface with the inner conical section, with their tips facing outwards. These barbed teeth engage in the barbed grooves to prevent the connector from exiting the connector. A gap 27 surrounds the connector between the monitoring module and the base ring. An elastic sealing ring 28 seals the monitoring module and the base ring together within this gap, extending radially outwards to the periphery of the monitoring module. The base ring is a hollow structure (i.e., a tubular structure). The connector hole penetrates the vertical plane. The wireless transmission module is located inside the base ring. The connector is a tubular structure. The wire 30 of the monitoring module passes through the mounting hole inside the connector and connects to the wireless transmission module. The base ring is a heat-insulating structure. The upper surface of the base ring has several vertically extending mounting holes 31 that penetrate the internal space of the base ring. The mounting holes include an upper conical segment 32 (larger at the top and smaller at the bottom), a straight segment 33, and a lower conical segment 34 (larger at the top and smaller at the bottom), distributed from top to bottom. The upper conical segment, the straight segment, and the lower conical segment are coaxial. The diameter of the lower end of the upper conical segment, the diameter of the straight segment, and the diameter of the upper end of the lower conical segment are equal. The upper end of the wireless transmission module has a large-diameter segment 35, through which the wireless transmission module is suspended on the lower conical segment. The upper conical segment is fitted with a plug 36 for a conical surface mating and sealing connection.The topmost set of monitoring modules and the middle set of monitoring modules can sink in the liquid inside the reactor under their own weight. The displacement module includes a weight 37 suspended on the liquid surface inside the reactor, a suspension shaft 38 fixed to the upper part of the reactor interior, a winding roller 39 rotatably connected to the suspension shaft, and a torsion spring 40 driving the winding roller to rotate. The winding roller has a first take-up reel 41 and a second take-up reel 42. The radius of the first take-up reel is half the radius of the second take-up reel. The base ring of the middle set of monitoring modules passes through... The first sling 43 is connected to the first take-up reel, and the sinker is connected to the second take-up reel via the second sling 44. The base ring of the uppermost set of monitoring modules is suspended from the sinker via the third sling 45. The torsion spring is used to drive the winding roller to rotate so that the first sling is wound onto the first take-up reel and the second sling is wound onto the second take-up reel. As the liquid level in the reactor decreases, the sinker drives the winding roller to rotate against the elastic force of the torsion spring. When the sinker descends, the direction of rotation of the winding roller is opposite to the direction of rotation of the winding roller driven by the elastic force of the torsion spring.

[0031] The process of conducting risk monitoring of reaction vessels using this invention includes the following steps: A. The reactor is operating normally upon startup; B. Compare the liquid level monitoring value in the reactor; if the liquid level drops at a rate exceeding the set range, the reactor must be shut down for inspection to check for leaks; if the liquid level monitoring value is normal compared to the ideal state detection value, proceed to step C. C. Compare the rate of change in the concentration of the reactants; If the rate of change of reactant concentration is normal, the equipment is considered to be functioning properly, and step B is repeated. If the rate of change in reactant concentration is slow, it is determined to be an abnormal reaction, and the following steps are performed in sequence: C1. Compare the reactant concentration. If the concentration is low, add reactants to the reactor through the reactant addition component. If the concentration is normal, proceed to step C2. C2. Compare the temperature environment inside the reactor. If the temperature is low, raise the temperature using a heating device. If the temperature is normal, proceed to step C3. C3. Compare the pH value inside the reactor. If the pH value is abnormal, correct it using the acid-base addition component. If the pH value is normal, proceed to step D. D. Compare the temperature monitoring values ​​of different monitoring modules 1; If, in step D, the temperature monitoring values ​​of each monitoring module 1 exceed the fluctuation threshold, the reactor is deemed abnormal and shut down for maintenance. If the temperature monitoring values ​​of each monitoring module are within the fluctuation threshold range, the reactor is deemed normal, and step B is repeated. In step D, the set fluctuation threshold for the temperature monitoring values ​​of each monitoring module 1 is within 5 to 10 degrees Celsius. When the temperature monitoring values ​​of each monitoring module 1 exceed the fluctuation threshold, a equipment risk point is established, requiring maintenance. The fluctuation threshold for the temperature monitoring values ​​is determined based on the amount of reactants; generally, the larger the amount of reactants, the higher the designed fluctuation threshold.

[0032] The method of this application first monitors the liquid level and the rate of liquid level decrease inside the reactor to determine the leakage situation of the reactor, which is the most important detection content for reactor safety. Then, it monitors the overall concentration of reactants, internal temperature of the reactor, and pH value. When these are all normal, it uses multiple monitoring modules set up at multiple points to achieve lateral comparative detection of local areas of the reactor. In step D, when stress deformation occurs inside the reactor, the reaction rate of reactants and the temperature environment will change relative to other normal areas. Lateral comparison can quickly find the problem location. At this time, the reactor as a whole is in normal working condition, but the actual equipment has already shown a risk point. This monitoring system and method can intuitively and quickly detect the relevant location.

Claims

1. A self-regulating risk monitoring system for a reaction vessel, characterized in that, The system includes a set of level gauges, a monitoring module, a comparison module, and a shifting module. The monitoring module includes at least a temperature monitoring module, a pH monitoring module, a product concentration monitoring module, and a reactant concentration monitoring module. Three sets of monitoring modules are arranged along the height of the reactor. Each set includes a base ring extending circumferentially along the reactor and several monitoring modules connected to the base ring. The monitoring modules on the same base ring are distributed along the extension direction of the base ring. The base ring of the bottommost set of monitoring modules is fixed to the reactor. The base rings of the remaining two sets of monitoring modules can move up and down within the reactor. Initially, the middle set of monitoring modules is located precisely between the bottommost and topmost sets. The shifting module is used to synchronize the rise and fall of the topmost set of monitoring modules with the reactor's liquid level. The shifting module also keeps the middle set of monitoring modules in the exact middle position between the bottommost and topmost sets. The comparison module compares the actual monitoring value of the monitoring module with the ideal monitoring value.

2. The risk monitoring system for a self-aligning reaction vessel according to claim 1, characterized in that, The system also includes an adjustment module, which comprises a heating device, an acid-base addition component, and a reactant addition component. The monitoring module is arranged in a grid pattern on the inner wall of the reactor.

3. The risk monitoring system for a self-aligning reaction vessel according to claim 1, characterized in that, The monitoring module is equipped with a wireless transmission module that transmits data from the monitoring module to the comparison module for storage and comparison.

4. The risk monitoring system for a self-aligning reaction vessel according to claim 1, characterized in that, The generatrix of the outer circumferential surface of the base ring is a vertically extending straight line. The outer circumferential surface of the base ring is flat on the inner circumferential surface of the reactor. Several vertical planes are provided on the inner circumferential surface of the base ring. The vertical planes penetrate the upper and lower end faces of the base ring. The monitoring modules are correspondingly snapped onto the vertical planes.

5. The self-aligning reaction vessel risk monitoring system according to claim 4, characterized in that, The base ring has a connecting hole on its inner circumferential surface. The inner end of the connecting hole has an inner conical surface section with a smaller outer end and a larger inner end, and the outer end has an outer conical surface section with a smaller inner end and a larger outer end. The monitoring module has a connector. The root of the connector has a root conical surface section that mates with the conical surface of the outer conical surface section. The free end of the connector has several elastic flaps distributed circumferentially along the connector. The outer surface of the free end of the elastic flaps has a hook that mates with the conical surface of the inner conical surface section. The hook hooks onto the inner conical surface section, so that the root conical surface section and the outer conical surface section are sealed together.

6. The risk monitoring system for a self-aligning reaction vessel according to claim 5, characterized in that, The inner conical section is provided with several annular teeth with the tooth tips facing inward and distributed along the axial direction of the conical section. A barb groove is formed between adjacent annular teeth. The surface of the hook head that mates with the inner conical section is provided with several barb teeth of the connecting hole with the tooth tips facing outward. The barb teeth hook into the barb groove to prevent the connector head from exiting from the connecting hole.

7. A risk monitoring system for a self-aligning reaction vessel according to claim 5 or 6, characterized in that, A gap is provided between the monitoring module and the base ring, surrounding the connector. An elastic sealing ring is provided within the gap to seal the monitoring module and the base ring together. The radial outer end of the elastic sealing ring extends to the periphery of the monitoring module.

8. A risk monitoring system for a self-aligning reaction vessel according to claim 5 or 6, characterized in that, The monitoring module is equipped with a wireless transmission module that transmits the data detected by the monitoring module to the comparison module for storage and comparison. The base ring is a hollow structure, the connection hole extends through the vertical plane, the wireless transmission module is located inside the base ring, the connector is a tubular structure, and the wire of the monitoring module passes through the mounting hole from the connector and is connected to the wireless transmission module. The base ring is a heat-insulating structure.

9. A risk monitoring system for a self-aligning reaction vessel according to claim 8, characterized in that, The upper surface of the base ring has several vertically extending mounting holes penetrating the internal space of the base ring. These mounting holes include, from top to bottom, an upper conical segment (larger at the top, smaller at the bottom), a straight segment, and a lower conical segment (larger at the top, smaller at the bottom). The diameters of the lower end of the upper conical segment, the straight segment, and the upper end of the lower conical segment are equal. The upper end of the wireless transmission module has a large-diameter segment, through which the wireless transmission module is suspended on the lower conical segment. The upper conical segment is fitted with a plug that provides a conical surface fit and sealing connection. This design ensures convenient and reliable installation and removal of the wireless transmission module.

10. A risk monitoring system for a self-aligning reaction vessel according to any one of claims 1, 2, 3, 4, 5, or 6, characterized in that, The topmost and middle sets of monitoring modules sink in the liquid within the reactor under their own weight. The displacement module includes a weight suspended above the liquid surface, a suspension shaft fixed to the upper part of the reactor interior, a winding roller rotatably connected to the suspension shaft, and a torsion spring driving the winding roller. The winding roller has a first take-up reel and a second take-up reel, the radius of the first take-up reel being half the radius of the second take-up reel. The base ring of the middle set of monitoring modules is connected to the first take-up reel via a first sling, and the weight is connected to the second take-up reel via a second sling. The base ring of the topmost set of monitoring modules is suspended from the weight via a third sling. The torsion spring drives the winding roller to rotate, causing the first sling to wind onto the first take-up reel and the second sling to wind onto the second take-up reel. As the liquid level in the reactor decreases, the weight drives the winding roller to rotate against the torsion spring's force. The direction of rotation of the winding roller as the weight descends is opposite to the direction of rotation driven by the torsion spring's force.

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