Butterfly valve with fault early warning system

Abstract

The invention discloses a butterfly valve with a fault early warning system, and relates to the technical field of butterfly valves, the butterfly valve comprises a gear box, a main driving rod, a gear A, a gear B, a valve rod, a valve seat and a butterfly valve, the main driving rod is arranged in the gear box, the gear A is located below the gear box and engaged with the gear B, the valve rod is fixedly connected to the axis of the gear B, the valve seat is arranged below the gear box, and the butterfly valve is fixedly connected to the valve seat. The valve rod is inserted into the valve seat in a penetrating mode and fixedly connected with the butterfly valve, solution adopted in a fluid bin in the first assembly is designed to be electrorheological fluid, the solution can serve as a magnetorheological elastomer shock absorption layer, the self-adaptive shock absorption function is achieved, and the magnetorheological elastomer shock absorption layer can automatically adjust the damping coefficient according to the vibration frequency; under different working conditions, no matter high-frequency vibration caused by load impact or low-frequency vibration caused by other factors, the damping layer can be adjusted in real time, proper damping force can be provided, and the vibration amplitude of a transmission system is effectively reduced.

Description

Technical Field

[0001] This invention relates to the field of butterfly valve technology, specifically to a butterfly valve with a fault early warning system. Background Technology

[0002] In industrial pipeline fluid control systems, butterfly valves, as core control components, typically consist of a valve body, butterfly plate, valve stem, transmission housing, and actuator components. Among these, the transmission gears within the transmission housing serve as the key hub for power transmission, undertaking the crucial function of accurately transmitting power from the actuator to the valve stem, driving the butterfly plate to achieve opening and closing actions.

[0003] However, existing technologies have significant shortcomings in the monitoring and maintenance of butterfly valve drive gears. On the one hand, the monitoring methods for gear tooth wear and tooth breakage caused by insufficient lubrication and load impact are relatively limited. Traditional monitoring methods mostly rely on manual periodic inspections or fault diagnosis based solely on indirect parameters such as pressure and flow rate. These methods cannot obtain real-time and accurate data on gear lubrication status and load impact, making it difficult to detect potential faults such as abnormal gear wear and tooth breakage in advance. For example, relying solely on pressure sensors to monitor pipeline pressure changes cannot provide timely warnings in the early stages of tooth wear. Faults are often only detected after serious leakage has occurred, exhibiting a significant lag. On the other hand, existing technologies lack effective maintenance mechanisms for gear transmission components. Most butterfly valves use a timed and quantitative lubrication method, which cannot dynamically adjust the lubrication strategy according to the actual wear of the gears and the operating conditions. This easily leads to problems such as excessive lubrication causing resource waste and insufficient lubrication aggravating tooth surface wear. At the same time, the system cannot take proactive protective measures when faced with sudden load impacts, causing the gears to be damaged more quickly under frequent impacts, which significantly shortens the overall service life of the butterfly valve. If the drive gears of a butterfly valve experience tooth wear or breakage due to insufficient lubrication or load impact, a series of serious problems will arise. Gear wear can cause valve opening and closing difficulties, abnormal torque, and affect the valve's control accuracy and response speed, leading to inaccurate flow control of pipeline fluids. Broken gears, on the other hand, can directly cause valve malfunction, resulting in media leakage. This not only wastes energy and pollutes the environment but can also trigger major safety accidents such as fires and explosions, causing huge economic losses and safety hazards to industrial production. Therefore, there is an urgent need to develop a technical solution that can effectively monitor the operating status of the butterfly valve drive gears and achieve intelligent maintenance to improve the reliability and safety of butterfly valves.

[0004] Therefore, this invention proposes a butterfly valve with a fault early warning system to solve the above problems. Summary of the Invention

[0005] In view of this, the technical problem to be solved by the present invention is to provide a butterfly valve with a fault early warning system in order to solve the problems existing in the prior art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a butterfly valve with a fault early warning system, comprising: a gearbox, a main drive rod, gear A, gear B, valve stem, valve seat, and butterfly valve, and further comprising: a first component; The first component includes a shock-absorbing rubber pad attached to the top wall of the gearbox cavity, a mounting bracket attached to the shock-absorbing rubber pad, and the mounting bracket being fixedly connected to the top wall of the gearbox cavity by fastening screws inserted through the shock-absorbing rubber pad. A fluid chamber is provided inside the mounting bracket. A connecting rod is vertically slidably connected to the mounting bracket, a perforated plate is slidably connected inside the fluid chamber, the bottom surface of the perforated plate is fixedly connected to the top of the connecting rod, a spring is fixedly connected to the top of the perforated plate, the top of the spring is fixedly connected to the top wall of the fluid chamber, and a threaded screw sleeve is threadedly connected to the connecting rod. The bottom end of the connecting rod is fixedly connected to a grooved clamping plate, and electrode plate A, electrode plate B, and strain gauge are fixedly installed on the grooved clamping plate through the mounting groove. An early warning module is fixedly connected to the gearbox.

[0007] As an improvement, the main drive rod is located inside the gearbox, gear A is located below the gearbox and meshes with gear B, the valve stem is fixedly connected to the shaft of gear B, a valve seat is provided below the gearbox, and the valve stem passes through the valve seat and is fixedly connected to the butterfly valve. As an improvement, the second component includes a lubricating oil storage tank fixedly connected to the inner wall of the gearbox, a solenoid valve fixedly connected to the lubricating oil storage tank, and a lubrication pipe fixedly connected to the solenoid valve.

[0008] As an improvement, the grooved clamp plate has a cavity, and the grooved clamp plate has oblique oil outlet grooves at equal intervals. The cavity in the grooved clamp plate is connected to the oblique oil outlet grooves.

[0009] As an improvement, a stabilizing rod is fixedly connected to the bottom surface of the main drive rod, and symmetrical insertion slots are provided at the bottom of the main drive rod.

[0010] As an improvement, a secondary drive rod is rotatably connected to the bottom of the gearbox cavity. A stabilizing groove is provided at the center of the secondary drive rod. Medium chambers are symmetrically provided on the secondary drive rod, and a plug rod is slidably connected inside the medium chamber.

[0011] As an improvement, an electric oil pump is fixedly connected to the lubricating oil storage tank, a connecting pipe is fixedly connected to the electric oil pump, and an annular transmission ring is fixedly connected to the end of the connecting pipe away from the electric oil pump. An electrical contact A is fixedly connected to the bottom surface of the main drive rod.

[0012] As an improvement, an electrical contact B is fixedly connected to the top surface of the secondary drive rod.

[0013] Compared with the prior art, the present invention provides a butterfly valve with a fault early warning system, which has the following beneficial effects: 1. The design of the first component in this invention brings the following benefits to the overall operation: Improving monitoring accuracy and timeliness: The integrated monitoring method of electrode A, electrode B, and strain gauge can detect abnormalities in the early stages of reduced lubrication or sudden increase in stress on the gear teeth of meshing gears A and B. Compared with traditional monitoring methods that rely on manual periodic inspections or fault diagnosis based solely on indirect parameters such as pressure and flow, which cannot obtain real-time and accurate data on gear lubrication status and load impact, this method significantly shortens the fault warning time and prevents faults from developing into serious leaks before being discovered. This effectively improves the accuracy and timeliness of valve body operating status monitoring. Improved valve control precision and safety: By promptly detecting potential faults such as gear wear and broken teeth, it avoids valve opening and closing jams and abnormal torque caused by gear problems, ensuring valve control precision and response speed, and making pipeline fluid flow control more accurate; at the same time, it effectively prevents major safety accidents such as valve malfunction and media leakage caused by broken gear teeth, significantly improving the safety of industrial production and reducing economic losses and environmental hazards caused by accidents.

[0014] Reduced manual maintenance costs and intensity: It changes the traditional model of relying on regular manual inspections. The components achieve automated real-time monitoring, which greatly reduces the frequency and time investment of manual inspections. Furthermore, through early warning modules, maintenance personnel can address problems in a targeted manner, avoiding blind troubleshooting, thus reducing manual maintenance costs and alleviating the workload of workers.

[0015] 2. By using an electrorheological fluid as the solution in the fluid chamber of the first component, this invention can serve as a magnetorheological elastomer damping layer, bringing the following benefits to the overall operation: Adaptive damping: The magnetorheological elastomer damping layer can automatically adjust the damping coefficient according to the vibration frequency. Under different working conditions, whether it is high-frequency vibration caused by load impact or low-frequency vibration caused by other factors, the damping layer can adjust in real time to provide appropriate damping force and effectively reduce the vibration amplitude of the transmission system. This not only helps to protect the transmission gears from additional wear and fatigue damage caused by excessive vibration, but also reduces the vibration level of the entire valve body device and improves its stability and operating quality. Precise monitoring ensures accuracy: By ensuring the installation accuracy of electrode plates A, B, and strain gauges on the grooved clamp, the above electronic devices can more accurately collect electrical and strain signals related to wear and fracture of transmission teeth; stable installation accuracy reduces sensor position offset or signal interference caused by vibration, thereby providing more accurate data for the monitoring system, which helps to judge the state of transmission teeth in a timely and accurate manner and improve the reliability of early warning. Improved system stability: Reduced vibration protects gear A, gear B, and all components of the entire device, reducing friction and wear between parts, minimizing fatigue damage caused by vibration, and stable installation and adaptive vibration damping help maintain the stable operation of the entire monitoring and early warning system. In complex industrial environments, the system can operate continuously without vibration interference, ensuring real-time monitoring and timely early warning of the transmission gear status, providing strong support for the stable operation of industrial pipeline fluid control systems, and reducing production interruptions and losses caused by system failures.

[0016] 3. The design of the second component in this invention brings the following advantages to the overall operation: To ensure lubrication and prevent insufficient lubrication: With the assistance of the first component monitoring, the component can replenish the lubricating oil between the gear transmission components in a timely manner, avoiding the aggravation of tooth surface wear due to insufficient lubrication; maintaining good lubrication can reduce the friction coefficient between gears, reduce energy loss, and improve transmission efficiency. Optimized lubrication management: Compared with the traditional timed and quantitative lubrication method, this component can replenish lubricating oil according to the actual working condition of the gears, realizing more precise and reasonable lubrication management and avoiding resource waste and environmental pollution caused by excessive lubrication; Protecting transmission components and preventing overload damage: In the event of excessive impact, the component can cut off the power transmission between the main drive rod and the auxiliary drive rod, preventing gear A and gear B from breaking teeth or deforming under excessive load. This helps extend the service life of gears and other transmission components, reducing equipment maintenance and replacement costs. At the same time, timely power cut-off can avoid a series of chain reactions caused by gear damage, such as valve malfunction and media leakage, thereby ensuring the safe and stable operation of the industrial pipeline fluid control system and reducing potential safety accidents and economic losses. Improving system reliability and enhancing operational stability: By replenishing lubricating oil in a timely manner and cutting off overload power, this component helps maintain the stable operation of the gear transmission system within the gearbox, reducing system failures and downtime caused by lubrication problems and overload impacts, thereby improving the reliability and production efficiency of the entire device; It can effectively adapt to complex working conditions, enabling the butterfly valve to better adapt to different working conditions and load changes. Whether under high load and high impact conditions or under long-term continuous operation, it can ensure the safety of the transmission system and improve the system's adaptability and flexibility.

[0017] 4. By designing the second component to use lubricating oil as both a lubricating medium and a power medium, this invention provides the following advantages to the second component and the overall device: Functional integration and space optimization simplify structural design: The lubricant has two functions, reducing the need for separate power medium and related conveying equipment, making the structure of the second component more compact; no additional device for pushing the plug rod is required, saving space and reducing the complexity and manufacturing cost of the device; Lubrication and power coordination ensure stability: The presence of lubricating oil in the medium chamber provides stable movement for the connector rod, preventing jamming between components. This provides favorable conditions for power cut-off when overload occurs, i.e., when the connector rod inserted into the connector slot is removed, ensuring rapid and stable power cut-off. Convenient maintenance and management, unified media management: Only one medium, namely lubricating oil, needs to be managed and maintained, simplifying the maintenance process. Staff do not need to monitor, replenish, and replace different media in the lubrication system and power system separately, reducing maintenance difficulty and workload. Attached Figure Description

[0018] Figure 1 This is a structural diagram of the main body of the present invention; Figure 2 This is a three-dimensional view of the gearbox of the present invention after sectional cutting; Figure 3 This is a front view of the gearbox of the present invention after sectional cutting; Figure 4 This is a diagram showing the structural positions of gear B, electrode A, and electrode B in the first component of this invention. Figure 5 This is a structural diagram of the first component of the present invention; Figure 6 This is a bottom view of the main structure of the grooved clamping plate, electrode A, electrode B, and strain gauge of the present invention; Figure 7 This is a top view of the gearbox of the present invention after sectional cutting; Figure 8 This is a perspective view of the gearbox of the present invention after it has been cut open. Figure 9 This is a diagram showing the working state of the first component in this invention; Figure 10 This is a diagram showing the working state of the second component in this invention; Figure 11 This is an anatomical diagram of the main structure of the second component of the present invention; Figure 12 This is a diagram showing the working state of the second component of the present invention.

[0019] In the picture: 1. Gearbox; 2. Main drive rod; 3. Gear A; 4. Gear B; 5. Valve stem; 6. Valve seat; 7. Butterfly valve; First Component: 801, Shock-absorbing rubber pad; 802, Mounting bracket; 803, Fluid chamber; 804, Connecting rod; 805, Perforated plate; 806, Spring; 807, Threaded screw sleeve; 808, Grooved clamping plate; 809, Electrode A; 810, Electrode B; 811, Strain gauge; 812, Early warning module; Second component: 901, Lubricating oil storage tank; 902, Solenoid valve; 903, Lubrication pipe; 904, Angled oil outlet groove; 905, Stabilizing rod; 906, Insertion groove; 907, Secondary drive rod; 9071, Stabilizing column groove; 908, Medium tank; 909, Insertion rod; 910, Electric oil pump; 911, Connecting pipe; 9111, Annular transmission ring; 912, Electrical contact A; 913, Electrical contact B. Detailed Implementation

[0020] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0021] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. Example

[0022] Please refer to Figures 1 to 9 As shown: To address the problems mentioned in the technical solutions, this application provides a butterfly valve with a fault warning system, comprising: a gearbox 1, a main drive rod 2, gear A3, gear B4, valve stem 5, valve seat 6, and butterfly valve 7. The main drive rod 2 is disposed inside the gearbox 1, gear A3 is located below the gearbox 1 and meshes with gear B4, valve stem 5 is fixedly connected to the shaft of gear B4, valve seat 6 is disposed below the gearbox 1, valve stem 5 passes through valve seat 6 and is fixedly connected to butterfly valve 7, and further comprises: a first component and a second component, the first component being located on one side of the second component; The first component is used for monitoring and early warning of tooth surface wear and tooth breakage in gear transmission components due to insufficient lubrication and load impact. The first component includes a shock-absorbing rubber pad 801 attached to the top wall of the inner cavity of the gearbox 1. A mounting bracket 802 is attached to the shock-absorbing rubber pad 801. The mounting bracket 802 is fixedly connected to the top wall of the inner cavity of the gearbox 1 after being inserted through the shock-absorbing rubber pad 801 by fastening screws. A fluid chamber 803 is opened in the mounting bracket 802. A connecting rod 804 is vertically slidably connected to the mounting bracket 802. A perforated plate 805 is slidably connected in the fluid chamber 803. The bottom surface of the perforated plate 805 is fixedly connected to the top of the connecting rod 804. A spring 806 is fixedly connected to the top of the perforated plate 805. The top of the spring 806 is fixedly connected to the top wall of the fluid chamber 803. A threaded screw sleeve 807 is threadedly connected to the connecting rod 804. A grooved clamping plate 808 is fixedly connected to the bottom end of the connecting rod 804. An electrode plate A809, an electrode plate B810, and a strain gauge 811 are fixedly installed in the grooved clamping plate 808 through a mounting groove. A warning module 812 is fixedly connected to the gearbox 1.

[0023] in: Gear A3 and gear B4 are meshed and properly matched.

[0024] The first component is used for monitoring and early warning of tooth surface wear and tooth breakage in gear transmission components caused by insufficient lubrication and load impact.

[0025] The fluid chamber 803 is equipped with electrorheological fluid and a metal sheet for triggering, which serves as a magnetorheological elastomer damping layer. The damping coefficient can be automatically adjusted according to the vibration frequency to ensure that the electrode sheet A809, electrode sheet B810 and strain gauge 811 set on the groove clamp plate 808 maintain the installation accuracy under vibration acceleration.

[0026] The threaded screw sleeve 807 is used to assemble and connect the connecting rod 804 with the threaded post at the bottom of the mounting bracket 802.

[0027] The grooved clamping plate 808 is provided with mounting grooves for mounting electrode A809, electrode B810 and strain gauge 811.

[0028] The arc-shaped center of electrode A809 and electrode B810 is perpendicular to the line connecting the gear shaft center and the gear end face.

[0029] The contact surfaces of electrode plates A809 and B810 with the gear are covered with polytetrafluoroethylene insulating films to prevent direct contact and short circuits between the gear's metal surface and the electrode plates.

[0030] Electrode plates A809 and B810 are located at the gear meshing point. Their working principle is based on the relationship between capacitance and dielectric constant. The lubricating oil film on the gear surface acts as the medium of the capacitor. When lubrication is insufficient, the oil film thickness decreases and the capacitance changes. The sensor converts the capacitance signal into an electrical signal output. By monitoring the change in capacitance, the oil film thickness data can be obtained in real time to determine the lubrication status.

[0031] The early warning module 812 includes an audible and visual alarm and a wireless communication module. When the data processing unit analyzes and finds that there is an abnormality in the gear transmission component, it triggers the audible and visual alarm to alert the operator. At the same time, the wireless communication module sends the fault information to the remote monitoring center so that maintenance personnel can understand the equipment status in a timely manner and take appropriate measures.

[0032] In this invention, all circuit elements are electrically connected to the data processing unit, which uses a microprocessor as its core to receive data signals such as oil film thickness and stress torque from the monitoring module. The data undergoes preprocessing such as filtering, amplification, and analog-to-digital conversion. Then, a preset algorithm model is used to analyze the data, such as determining insufficient lubrication based on an oil film thickness threshold and predicting tooth surface wear and tooth breakage risks based on the trends in torque and acceleration. Specifically, this can be implemented as follows: Core chip: AD7746 capacitor-to-digital converter; Circuit function: Converts the capacitance value between electrode plates into an I2C digital signal, incorporates a built-in temperature compensation algorithm, and corrects the influence of oil viscosity changes on the dielectric constant.

[0033] A further embodiment: Please refer to Figure 2 , Figure 3 , Figure 8 , Figures 10 to 12 As shown: The second component is used for lubrication of gear transmission components and power cut-off when impact is excessive. The second component includes a lubricating oil storage tank 901 fixedly connected to the inner wall of gearbox 1, a solenoid valve 902 fixedly connected to the lubricating oil storage tank 901, a lubrication pipe 903 fixedly connected to the solenoid valve 902, a cavity formed within a grooved clamping plate 808, and oblique oil outlet grooves 904 equidistantly formed on the grooved clamping plate 808. The cavity within the grooved clamping plate 808 communicates with the oblique oil outlet grooves 904. A stabilizing rod 905 is fixedly connected to the bottom surface of the main drive rod 2, and insertion slots 906 are symmetrically formed at the bottom of the main drive rod 2. A secondary drive rod 907 is rotatably connected to the bottom of the inner cavity of wheel box 1. A stabilizing groove 9071 is provided at the center of the secondary drive rod 907. A medium chamber 908 is symmetrically provided on the secondary drive rod 907. A plug rod 909 is slidably connected in the medium chamber 908. An electric oil pump 910 is fixedly connected to the lubricating oil storage tank 901. A connecting pipe 911 is fixedly connected to the electric oil pump 910. An annular transmission ring 9111 is fixedly connected to the end of the connecting pipe 911 away from the electric oil pump 910. An electrical contact B913 is fixedly connected to the top surface of the secondary drive rod 907. An electrical contact A912 is fixedly connected to the bottom surface of the main drive rod 2.

[0034] in: The second component is used for lubrication of gear transmission components and for cutting off power in case of excessive impact.

[0035] The stabilizing rod 905 is adapted to the stabilizing column groove 9071 to ensure that the main drive rod 2 and the auxiliary drive rod 907 do not undergo vertical displacement when they are disengaged.

[0036] The auxiliary drive rod 907 has a through hole, which is used to assist the connecting pipe 911 in transporting / extracting lubricating oil from the lubricating oil storage tank 901 to the medium chamber 908, thereby enabling the insertion rod 909 to move up and down in the medium chamber 908, thereby enabling the insertion / non-insertion action with the insertion slot 906 at the bottom of the main drive rod 2.

[0037] The plug rod 909 is plugged into the plug slot 906 for adaptation.

[0038] Electrical contacts A912 and B913 are used to assist in the docking of the main drive rod 2 and the auxiliary drive rod 907. When electrical contacts A912 and B913 are in contact, the main controller of the device will control the electric oil pump 910 to indirectly pump lubricating oil into the medium tank 908, so that the vertically sliding plug rod 909 on the auxiliary drive rod 907 can be inserted into the plug groove 906 on the main drive rod 2, thereby achieving stable docking. After the docking is completed, the pumping of lubricating oil will stop.

[0039] The working principle of all the content in the above embodiments is as follows: In the initial state: Spring 806 is not compressed, stabilizing rod 905 is inserted into stabilizing column groove 9071, and insertion rod 909 is inserted into insertion groove 906 with the auxiliary support of lubricating oil in medium chamber 908. Electrical contact A912 and electrical contact B913 are in contact.

[0040] The following is the working process of the first component: In operation, the main drive rod 2, assisted by the stabilizing rod 905 and the connecting rod 909, drives the auxiliary drive rod 907 to rotate gear A3. During this rotation, gear A3, via gear B4, drives the valve stem 5 to close the butterfly valve 7 in the valve seat 6. During this period, the first component detects the lubricating oil between gears A3 and B4, as well as the stress between them. Since electrode plates A809 and B810 are located at the gear meshing point, their working principle is based on the relationship between capacitance and dielectric constant, with the lubricating oil film on the gear surface acting as the dielectric of the capacitor. When lubrication is insufficient, the oil film thickness decreases and the capacitance value changes. The sensor converts the capacitance signal into an electrical signal output. By monitoring the change in capacitance value, the oil film thickness data can be obtained in real time to determine the lubrication status. Therefore, when the electrode plates A809 and B810, which are set on the groove clamping plate 808 and located between the teeth of gear A3 and gear B4, detect that there is less lubricating oil and that the teeth are prone to wear during transmission, the first component will send a maintenance protection signal to the second component through the controller electrically connected to itself, so that the second component can perform the lubricating oil adding action. Furthermore, the entire device vibrates during operation due to both its own movement and the impact of external water. During this process, the perforated plate 805, which is slidably connected within the fluid chamber 803 of the mounting bracket 802, cooperates with the connecting rod 804, which is fixed to the mounting bracket 802 by the threaded screw sleeve 807. The operator can use the electrorheological fluid and the metal plate for triggering within the fluid chamber 803 as a magnetorheological elastomer damping layer to automatically adjust the damping coefficient according to the vibration frequency. This changes the movement resistance of the perforated plate 805, which is fixed to the connecting rod 804, within the fluid chamber 803. This non-rigid fixing method provides a complete and stable auxiliary to the component that fixes the mounting bracket 802 and the connecting rod 804 into a whole by the threaded screw sleeve 807; ensuring that the electrode plates A809, B810, and strain gauges 811 on the grooved clamp plate 808 maintain their installation accuracy under vibration acceleration. Furthermore, if the flow rate of the medium to be blocked by the butterfly valve 7 is too fast, or if other external factors indirectly cause the stress between gear A3 and gear B4 to exceed the normal stress level, the strain gauge 811 located between gear A3 and gear B4 will reflect this change, thereby indirectly causing the second component to perform a power cut-off action through the main controller. Furthermore, by using an electrorheological fluid design for the solution within the fluid chamber 803 of the first component, it can serve as a magnetorheological elastomer damping layer, thereby achieving adaptive damping. The magnetorheological elastomer damping layer can automatically adjust its damping coefficient according to the vibration frequency. Under different operating conditions, whether it is high-frequency vibration caused by load impact or low-frequency vibration caused by other factors, the damping layer can adjust in real time to provide appropriate damping force, effectively reducing the vibration amplitude of the transmission system. This not only helps protect the transmission gears from additional wear and fatigue damage caused by excessive vibration, but also reduces the vibration level of the entire valve body device, improving its stability and operating quality. Meanwhile, by ensuring the installation accuracy of electrode plates A809, B810, and strain gauges 811 on the grooved clamping plate 808, the aforementioned electronic devices can more accurately collect electrical and strain signals related to wear and fracture of the transmission teeth. Stable installation accuracy reduces sensor position offset or signal interference caused by vibration, thereby providing more accurate data for the monitoring system, which helps to judge the state of the transmission teeth in a timely and accurate manner and improves the reliability of early warning. Furthermore, reducing vibration protects gears A3 and B4, as well as all components of the entire device, reducing friction and wear between parts, minimizing fatigue damage caused by vibration, and ensuring stable operation of the entire monitoring and early warning system through stable installation and adaptive vibration damping. In complex industrial environments, the system can operate continuously without vibration interference, ensuring real-time monitoring and timely early warning of the transmission gear status, providing strong support for the stable operation of industrial pipeline fluid control systems, and reducing production interruptions and losses caused by system failures. Please refer to the above work process. Figures 1 to 9 .

[0041] The following is the working process of the second component: Furthermore, after the second component receives the need to supply lubricating oil between gears A3 and B4, it controls the solenoid valve 902 to transport the lubricating oil in the lubricating oil storage tank 901 to the cavity opened in the groove clamp 808 through the lubrication pipe 903, and realize the lubricating oil replenishment operation through the inclined oil outlet groove 904 opened on it. Furthermore, when the second component receives a request for power cut-off, the electric oil pump 910 on the lubricating oil storage tank 901, aided by the connecting pipe 911 and the annular transmission ring 9111, draws lubricating oil from the medium chamber 908 through the through hole on the auxiliary drive rod 907. As the lubricating oil is drawn in, the plug rod 909, which is no longer supported by lubricating oil, moves out of the plug slot 906 in the main drive rod 2. At this point, there is no effective fixed connection between the main drive rod 2 and the auxiliary drive rod 907, meaning that the main drive rod 2 will idle, and the auxiliary drive rod 907 will not overload the gear B4 through gear A3. Simultaneously, the main controller will send a signal to relevant personnel through the warning module 812 to prompt the operator to take appropriate action. Furthermore, by designing the lubricating oil in the second component to serve as both a lubricating medium and a power medium, functional integration and space optimization can be effectively achieved, simplifying the structural design. In other words, the lubricating oil has two functions, reducing the need for a separate power medium and related conveying equipment, making the structure of the second component more compact. There is no need to install an additional device for pushing the plug rod 909, saving space and reducing the complexity and manufacturing cost of the device. Meanwhile, the presence of lubricating oil in the medium chamber 908 provides stable motion protection for the movement of the plug rod 909, preventing jamming between components. This provides favorable conditions for power cut-off when overload occurs, i.e., when the plug rod 909 inserted in the plug slot 906 is removed. This combination of lubrication and power protection effectively ensures the rapid and stable operation of power cut-off. In addition, the above design also has the advantages of convenient maintenance and management and unified media management; that is, only one medium, namely lubricating oil, needs to be managed and maintained, which simplifies the maintenance process. Staff do not need to monitor, replenish and replace different media in the lubrication system and power system separately, which reduces the difficulty and workload of maintenance.

[0042] Please refer to the above work process. Figure 2 , Figure 3 , Figure 8 , Figures 10 to 12 .

[0043] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes the element.

[0044] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A butterfly valve with a fault early warning system, comprising: The gearbox (1), main drive rod (2), gear A (3), gear B (4), valve stem (5), valve seat (6), and butterfly valve (7) are characterized in that they further include: a first component; The first component includes a shock-absorbing rubber pad (801) attached to the top wall of the inner cavity of the gearbox (1), and a mounting bracket (802) attached to the shock-absorbing rubber pad (801). The mounting bracket (802) is fixedly connected to the top wall of the inner cavity of the gearbox (1) by fastening screws inserted through the shock-absorbing rubber pad (801). A fluid chamber (803) is provided inside the mounting bracket (802); A connecting rod (804) is vertically slidably connected to the mounting bracket (802), and a perforated plate (805) is slidably connected inside the fluid chamber (803). The bottom surface of the perforated plate (805) is fixedly connected to the top of the connecting rod (804). A spring (806) is fixedly connected to the top of the perforated plate (805), and the top of the spring (806) is fixedly connected to the top wall of the fluid chamber (803). A threaded screw sleeve (807) is threadedly connected to the connecting rod (804). The bottom end of the connecting rod (804) is fixedly connected to a grooved clamping plate (808), and the grooved clamping plate (808) is fixedly installed with electrode plate A (809), electrode plate B (810), and strain gauge (811) through the mounting groove. The gearbox (1) is fixedly connected with an early warning module (812).

2. The butterfly valve with a fault early warning system according to claim 1, characterized in that: The main drive rod (2) is located inside the gearbox (1). The gear A (3) is located below the gearbox (1) and meshes with the gear B (4). The valve rod (5) is fixedly connected to the shaft of the gear B (4). A valve seat (6) is provided below the gearbox (1). The valve rod (5) passes through the valve seat (6) and is fixedly connected to the butterfly valve (7).

3. The butterfly valve with a fault early warning system according to claim 1, characterized in that: It also includes a second component; The second component includes a lubricating oil storage tank (901) fixedly connected to the inner wall of the gearbox (1), a solenoid valve (902) fixedly connected to the lubricating oil storage tank (901), and a lubrication pipe (903) fixedly connected to the solenoid valve (902).

4. A butterfly valve with a fault early warning system according to claim 1, characterized in that: The grooved clamp (808) has a cavity, and the grooved clamp (808) has oblique oil outlet grooves (904) at equal intervals. The cavity in the grooved clamp (808) is connected to the oblique oil outlet grooves (904).

5. A butterfly valve with a fault early warning system according to claim 2, characterized in that: The bottom surface of the main drive rod (2) is fixedly connected to a stabilizing rod (905), and the bottom of the main drive rod (2) is symmetrically provided with insertion slots (906).

6. A butterfly valve with a fault early warning system according to claim 2, characterized in that: The gearbox (1) has a secondary drive rod (907) rotatably connected to the bottom of its inner cavity. A stabilizing groove (9071) is provided at the center of the secondary drive rod (907). A medium chamber (908) is symmetrically provided on the secondary drive rod (907). A plug rod (909) is slidably connected inside the medium chamber (908).

7. A butterfly valve with a fault early warning system according to claim 3, characterized in that: An electric oil pump (910) is fixedly connected to the lubricating oil storage tank (901), and a connecting pipe (911) is fixedly connected to the electric oil pump (910). An annular transmission ring (9111) is fixedly connected to one end of the connecting pipe (911) away from the electric oil pump (910). An electric contact A (912) is fixedly connected to the bottom surface of the main drive rod (2).

8. A butterfly valve with a fault early warning system according to claim 6, characterized in that: An electrical contact B (913) is fixedly connected to the top surface of the secondary drive rod (907).

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