Long-acting leakage-proof type real-time self-inspection forged steel butterfly valve

Abstract

The invention discloses a long-acting anti-leakage type real-time self-inspection forged steel butterfly valve and relates to the technical field of forged steel butterfly valves, the long-acting anti-leakage type real-time self-inspection forged steel butterfly valve comprises a valve body and a control module, a transmission rod is arranged on the upper side of the valve body, the output end of a gearbox is fixedly connected with the transmission rod, and the lower end of the transmission rod extends into the valve body; a transmission rod is arranged in the valve body, a valve plate is fixedly connected to the outer wall, located in the valve body, of the transmission rod, a valve ring is fixedly connected to the inner wall of the valve body, and the inner wall of the valve ring makes contact with the outer wall of the valve plate. The data is compared with the normal pressure ratio of the upstream pipeline, if the peak value is abnormally reduced, it can be judged that leakage occurs between the valve plate and the valve ring, it is further reflected that the sealing performance is reduced, the early-stage leakage detection capacity is effectively improved, and the method has the advantages of being high in practicability and capable of improving the safety under the use working condition.

Description

Technical Field

[0001] The present invention relates to the technical field of forged steel butterfly valves, and particularly to a long-lasting leak-proof real-time self-checking forged steel butterfly valve. Background Art

[0002] As a key control element in industrial fluid control systems, butterfly valves are widely used in fields such as petrochemical, power, metallurgy, and water treatment. They have a compact structure, rapid opening and closing, low pressure loss, and low cost, and have significant advantages especially in large-diameter pipeline systems. Among them, forged steel butterfly valves are often used in application scenarios with high pressure resistance, complex working media, or harsh environments due to their excellent pressure resistance and corrosion resistance; However, traditional butterfly valves generally have the following technical shortcomings: First, the sealing pair is prone to wear and aging after long-term operation, resulting in poor contact between the valve plate and the sealing ring in the closed state and causing internal leakage; Second, existing devices mostly rely on manual inspections or regular disassembly inspections, and cannot achieve real-time monitoring and early warning of the degradation of sealing performance; Third, the valve body structure is fixed, and once the sealing surface is worn, it cannot be adjusted or compensated, and the entire sealing component needs to be replaced, resulting in high maintenance costs and slow response; Fourth, the change in the operating load during the opening and closing process of the valve is not fully utilized, and it is difficult to reflect the internal state evolution process such as wear and jamming; Especially in high-pressure or high-frequency opening and closing systems, butterfly valves are significantly affected by water hammer shock. After the sealing performance decreases, it is extremely easy to form a small amount of leakage at the moment of closing. Traditional detection means are difficult to respond to such transient leakage, causing potential safety hazards to the system; The Chinese patent with the publication number CN109027266B discloses a leak-proof hydraulic control opening and closing butterfly valve, including a butterfly plate structure provided with a sealing ring and a locking device, using a hydraulic control system to achieve the opening and closing action, and ensuring the stability of the opening and closing state through a hydraulic lock. Although this solution has a certain leak-proof ability, it has the following deficiencies: Its opening and closing state depends on hydraulic control. Once the hydraulic system fails, it is easy to cause sealing failure or misoperation. The sealing structure is a static pressing type, lacking real-time wear compensation and state feedback functions, and the long-term operation stability is poor. In addition, this valve does not set an opening and closing angle adjustment and dynamic leakage monitoring mechanism, which is not conducive to judging the wear trend and optimizing the maintenance cycle; Therefore, there is an urgent need for a butterfly valve structure with reasonable structure, rapid response, self-checking ability, and capable of dynamically compensating for the degradation of sealing performance to improve its practical value and safety performance in high-frequency working conditions and high-reliability application scenarios. Summary of the Invention

[0003] The purpose of the present invention is to provide a long-lasting leak-proof real-time self-checking forged steel butterfly valve to solve the problems raised in the above background art.

[0004] To solve the above technical problems, the present invention provides the following technical solution: a long-lasting leak-proof real-time self-checking forged steel butterfly valve, comprising a valve body and a control module. A gearbox is provided on the upper side of the valve body. The output end of the gearbox is fixedly connected to a transmission rod, and the lower end of the transmission rod extends into the interior of the valve body. An outer wall of the transmission rod inside the valve body is fixedly connected to a valve plate, and an inner wall of the valve body is fixedly connected to a valve ring. An inner wall of the valve ring contacts an outer wall of the valve plate. An input end of the gearbox is fixedly connected to a torque detection module, and an input end of the torque detection module is fixedly connected to a turntable. A dislocation mechanism is further provided on the outer side of the valve body; The dislocation mechanism includes a connection component and a sealing plate; The sealing plate is located on the outer side of the valve body, and the sealing plate can rotate relative to the valve body. An outer wall of the gearbox is fixedly connected to an outer wall of the sealing plate; A detection mechanism is further provided on the lower side of the valve body; Realize the overall integration of the valve body and the whole, ensure that the actuator drives the valve plate to rotate synchronously, and improve the opening and closing accuracy.

[0005] According to the above technical solution, a circular hole penetrating up and down is provided at the lower side of the gearbox on the upper part of the valve body. The lower end of the transmission rod extends into the interior of the valve body through the circular hole. The torque detection module is electrically connected to the control module. A detection hole penetrating inside and outside is provided on the lower side of the valve body. The structure perforation is used to arrange the shaft parts and the sensing components, which is convenient for data collection and system response linkage.

[0006] According to the above technical solution, the dislocation mechanism further includes a sealing ring. The sealing ring is of a ring structure, and there are two sealing rings. Inner walls of the two sealing rings are fixedly connected to an outer wall of the valve body. The sealing plate is located outside the two sealing rings, and an inner wall of the sealing plate contacts an outer wall of the sealing ring. The inner wall of the sealing plate is rotatably connected to the outer wall of the valve body through a bearing. An outer wall of the sealing plate is fixedly connected to a first connection block. An outer wall of the first connection block is hinged to a hydraulic telescopic rod. The other end of the hydraulic telescopic rod is hinged to a second connection block. An outer wall of the second connection block is fixedly connected to an outer wall of the valve body. The multi-ring support and bearing connection method is adopted to ensure the controllable deflection of the sealing plate structure and contribute to the fine adjustment of the sealing angle.

[0007] According to the above technical solution, a round hole is provided on the upper side of the sealing plate. The inner wall of the round hole on the upper side of the sealing plate is in contact with the outer wall of the transmission rod. A rubber gasket cylinder is fixedly connected to the outer wall of the transmission rod. A fixed bearing is fixedly connected to the outer wall of the rubber gasket cylinder. The outer wall of the fixed bearing is fixedly connected to the inner wall of the round hole on the upper side of the valve body. The inner diameter of the round hole provided on the valve body is larger than the inner diameter of the round hole provided on the sealing plate. The outer diameter of the rubber gasket cylinder is larger than the inner diameter of the round hole provided on the sealing plate. An installation window is provided on the lower side of the sealing plate. The detection mechanism is located inside the installation window. Multiple layers of flexible connections and an outer wall fixing ring are provided to achieve enhanced sealing and optimized force distribution of the valve.

[0008] According to the above technical solution, the hydraulic telescopic rod is electrically connected to the control module. The rubber gasket cylinder is a cylindrical structure made of elastic rubber material. An elastic element is introduced to enhance the buffering and adaptation ability when the valve plate is pressed and delay the loss of the aging sealing surface.

[0009] According to the above technical solution, the detection mechanism includes an installation cylinder. The outer wall of the installation cylinder is fixedly connected to the inner wall of the detection hole provided on the lower side of the valve body. A pressure detection module is provided inside the installation cylinder. The inner wall of the installation cylinder is in contact with the outer wall of the pressure detection module. A connection ring is fixedly connected to the outer wall of the pressure detection module. The outer wall of the connection ring is in contact with the middle inner wall of the installation cylinder. A spring is fixedly connected to one side of the outer wall of the connection ring. The other end of the spring is fixedly connected to the inner wall of the installation cylinder. The input end of the pressure detection module extends to the outside of the installation cylinder. A pressure sensing component is designed to monitor the instantaneous pressure fluctuation during liquid leakage and enhance the sensitivity of leakage detection.

[0010] According to the above technical solution, a connection cylinder is fixedly connected to the outer wall of the end of the installation cylinder located outside the valve body. A baffle is fixedly connected to the outer wall of the connection cylinder. A fixed sleeve is fixedly connected to one end of the pressure detection module. A laser ranging module is fixedly connected to the outer wall of the fixed sleeve. The structure integrates a displacement detection component to assist in judging the dynamic response ability of the leakage or abnormal flow state.

[0011] According to the above technical solution, the position of the laser ranging module is correspondingly set with the position of the baffle. Both the pressure detection module and the laser ranging module are electrically connected to the control module. Through double signal verification of position and pressure, the accuracy of abnormal state identification and the system stability are ensured.

[0012] Compared with the prior art, the beneficial effects achieved by the present invention are as follows: By providing a torque detection module for monitoring the torque change of the actuator, the rotational torque data can be obtained in real time during the opening and closing process of the valve. By comparing the historical trends through the control module, it is possible to effectively identify whether aging, blockage, or stuck wear has occurred at the connection between the transmission rod and the valve body and at the contact part between the valve plate and the valve ring, thereby realizing the real-time self-check function of the degradation trend of the valve opening and closing performance; By providing a peak pressure detection mechanism, the peak pressure caused by the water hammer effect can be collected at the moment when the valve plate closes, and the ratio of this data to the normal pressure of the upstream pipeline is compared. If the peak value decreases abnormally, it can be judged that there is a leak between the valve plate and the valve ring, further reflecting the decline in the sealing performance and effectively improving the early leak detection ability; By providing a misalignment mechanism with adjustable angle and a hydraulic telescopic rod for pushing the sealing plate to rotate, after discovering seal failure or wear at the seal line position, the deflection angle can be controlled through the control module to make the transmission rod contact eccentrically with the sealing surface, thereby realizing the correction of the contact of the sealing pair to avoid the wear area, extending the seal life and reducing the leakage probability; By providing a spring, a laser ranging module, and a baffle, when the liquid impact pressure detection module is detected at the moment when the valve closes, part of the impact energy can be absorbed to relieve the loss of the pressure measuring device. At the same time, the laser ranging module is used to collect the displacement change of the pressure detection module in real time, and the data consistency is monitored through the position-pressure ratio. If a deviation occurs, an abnormal prompt can be automatically triggered, effectively avoiding misjudgment caused by sensor drift or damage. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The drawings are used to provide a further understanding of the present invention and constitute a part of the specification. They are used to explain the present invention together with the embodiments of the present invention and do not constitute a limitation to the present invention. In the drawings: Figure 1 is a three-dimensional structural schematic diagram of the present invention; Figure 2 is a rear-side structural schematic diagram of the present invention; Figure 3 is a disassembled structural schematic diagram of the present invention; Figure 4 is a partial structural schematic diagram of the misalignment mechanism of the present invention; Figure 5 is a structural schematic diagram of the detection mechanism of the present invention; Figure 6 is an internal structural schematic diagram of the detection mechanism of the present invention.

[0014] In the figure: 1, valve body; 2, gearbox; 3, transmission rod; 4, valve plate; 5, torque detection module; 6, turntable; 7, dislocation mechanism; 8, detection mechanism; 9, valve ring; 701, sealing ring; 702, sealing plate; 703, first connecting block; 704, hydraulic telescopic rod; 705, second connecting block; 706, rubber gasket cylinder; 707, fixed bearing; 708, installation window; 801, installation cylinder; 802, pressure detection module; 803, connecting ring; 804, spring; 805, fixed sleeve; 806, laser ranging module; 807, baffle; 808, connecting cylinder. Specific implementation mode

[0015] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0016] Please refer to Figures 1-6 , the present invention provides a technical solution: a long-lasting leak-proof real-time self-checking forged steel butterfly valve, including a valve body 1 and a control module. A gearbox 2 is arranged on the upper side of the valve body 1. The output end of the gearbox 2 is fixedly connected with a transmission rod 3. The lower end of the transmission rod 3 extends into the interior of the valve body 1. The outer wall of the transmission rod 3 inside the valve body 1 is fixedly connected with a valve plate 4. And the inner wall of the valve body 1 is fixedly connected with a valve ring 9. The inner wall of the valve ring 9 contacts the outer wall of the valve plate 4. The input end of the gearbox 2 is fixedly connected with a torque detection module 5. The input end of the torque detection module 5 is fixedly connected with a turntable 6. A dislocation mechanism 7 is also arranged on the outside of the valve body 1. A detection mechanism 8 is also arranged on the lower side of the valve body 1. A circular hole penetrating up and down is opened at the lower side of the upper part of the valve body 1 where the gearbox 2 is located. The lower end of the transmission rod 3 extends into the interior of the valve body 1 through the circular hole. The torque detection module 5 is electrically connected with the control module. A detection hole penetrating inside and outside is opened at the lower side of the valve body 1.

[0017] In practical applications, both sides of the valve body 1 are respectively connected to the front and rear section pipelines. By rotating the turntable 6, the flipping of the valve plate 4 is started. During the rotation of the turntable 6, the torque detection module 5 monitors the force during the rotation of the turntable 6, and records and collects it in real time. Subsequently, the output end of the torque detection module 5 drives the input end of the gearbox 2 to rotate, and further makes the output end of the gearbox 2 drive the transmission rod 3 and the valve plate 4 to rotate, so as to achieve the effect of opening the valve plate 4 by rotation. After the torque detection module 5 collects the force of the turntable 6, it transmits it to the control module. The control module generates the torque change trend during the rotation process, and then compares it with the historical data, so that the staff can understand the aging and wear progress of each component in the gearbox 2, the connection between the transmission rod 3 and the valve body 1, and the contact part between the valve plate 4 and the valve ring 9 during the use of this device through the historical trend change, achieving the reminder function of early maintenance and repair.

[0018] The long-term leak-proof type real-time self-checking forged steel butterfly valve described in this application includes a valve body 1, a transmission mechanism, a sealing pair, a real-time monitoring unit, and a dynamic compensation unit. The transmission mechanism includes a gearbox 2 and a transmission rod 3 and other driving components connected to the valve plate 4 in the valve body 1. The real-time monitoring unit includes a torque detection module 5 connected to the input end of the gearbox and a detection mechanism 8 communicated with the fluid cavity of the valve body 1. The dynamic compensation unit includes a sealing plate 702 arranged outside the valve body 1 and capable of rotating relative to the valve body and an actuator for driving the deflection of the sealing plate. Both the torque detection module 5 and the detection mechanism 8 are electrically connected to the control module. The control module judges the sealing performance according to the torque change and the pressure peak value change at the moment of closing, and drives the actuator to deflect the sealing plate 702 when the sealing performance decreases, adjusting the contact position between the valve plate 4 and the valve ring 9, realizing real-time self-checking and dynamic compensation. The present invention significantly improves the sealing reliability of the butterfly valve in high-pressure or high-frequency opening and closing environments through a dual real-time monitoring and dynamic compensation mechanism, reduces the risk of micro-leakage caused by seal wear, and avoids the high maintenance cost of shutdown disassembly and inspection. At the same time, the butterfly valve can correct the wear offset through fine-tuning compensation without replacing the seal, extending the service life. And the control module can compare the monitoring data with the historical data and upload it to the monitoring system to realize fault warning and maintenance plan optimization, greatly improving the operation safety and economy of the system.

[0019] In the example of the present application, the detection mechanism 8 includes an installation cylinder 801. The outer wall of the installation cylinder 801 is fixedly connected to the inner wall of the detection hole opened on the lower side of the valve body 1. A pressure detection module 802 is arranged inside the installation cylinder 801, and the inner wall of the installation cylinder 801 is in contact with the outer wall of the pressure detection module 802. A connection ring 803 is fixedly connected to the outer wall of the pressure detection module 802, and the outer wall of the connection ring 803 is in contact with the middle inner wall of the installation cylinder 801. A spring 804 is fixedly connected to one side of the outer wall of the connection ring 803, and the other end of the spring 804 is fixedly connected to the inner wall of the installation cylinder 801. The input end of the pressure detection module 802 extends to the outside of the installation cylinder 801. In the example of the present application, the input end of the pressure detection module 802 is slidably and sealingly connected to the installation cylinder 801.

[0020] During the use of this device, when the valve plate 4 is closed instantaneously, the liquid in the front-section pipeline will generate a water hammer effect, which will cause the pressure on the left side of the valve plate 4 to increase instantaneously. After the sealing effect deteriorates, the instantaneous pressure increase will cause liquid leakage, and then the pressure in the area of the detection mechanism 8 will decrease compared with that before the leakage. During the use process, the pressure detection module 802 will collect all the instantaneous peak pressure values. This peak pressure will only appear when the valve plate 4 is closed instantaneously. After the pressure detection module 802 collects the peak pressure, it will transmit the value to the control module. The control module calculates the ratio of this value to the internal pressure of the upstream water supply pipeline and conducts a historical comparison. When an abnormal decrease occurs, it is judged that the valve plate 4 has a leakage situation, and the situation where the compressive capacity of the valve plate 4 and the valve ring 9 weakens before aging and leakage can be screened out.

[0021] The detection mechanism 8 described in the present application ensures a firm structure by reserving a detection hole on the lower side of the valve body 1 and fixedly connecting a high-strength installation cylinder 801. The inner wall of the installation cylinder 801 is closely attached to the outer wall of the pressure detection module 802, and an elastic connection mechanism is formed by the connection ring 803 and the spring 804, which ensures the stable positioning of the pressure detection module 802 during water hammer impact and provides a buffering and shock-absorbing function. The pressure detection module 802 inside the installation cylinder 801 directly exposes its input end in the fluid cavity of the valve body 1, collects the pressure peak signal generated instantaneously when the valve plate 4 is closed in real time, and converts the signal into an electrical signal and transmits it to the control module. The control module relies on a preset algorithm to perform a ratio operation on the collected instantaneous peak value and the normal pressure data of the upstream pipeline, and then makes an accurate comparison with the historical ratio curve to realize the online monitoring and early warning of the performance degradation of the sealing pair, so as to accurately diagnose the leakage risk of the butterfly valve and guide the maintenance without disassembly and inspection.

[0022] In the example of the present application, the dislocation mechanism 7 includes a connection component and a sealing plate 702. The sealing plate 702 is located outside the valve body 1, and the sealing plate 702 can rotate relative to the valve body 1. The outer wall of the gearbox 2 is fixedly connected to the outer wall of the sealing plate 702. The dislocation mechanism 7 further includes a sealing ring 701. The sealing ring 701 is a ring structure, and there are two sealing rings 701. The inner walls of the two sealing rings 701 are fixedly connected to the outer wall of the valve body 1. The sealing plate 702 is located outside the two sealing rings 701, and the inner wall of the sealing plate 702 contacts the outer wall of the sealing ring 701. The sealing ring 701 is used for the sealing plate 702 to be rotationally and sealingly connected to the valve body 1. Preferably, the inner wall of the sealing plate 702 is rotationally connected outside the two sealing rings 701 through a bearing.

[0023] In the example of the present application, a first connection block 703 is fixedly connected to the outer wall of the sealing plate 702. A hydraulic telescopic rod 704 is hinged to the outer wall of the first connection block 703. The other end of the hydraulic telescopic rod 704 is hinged to a second connection block 705. The outer wall of the second connection block 705 is fixedly connected to the outer wall of the valve body 1. A round hole is provided on the upper side of the sealing plate 702. The inner wall of the round hole on the upper side of the sealing plate 702 contacts the outer wall of the transmission rod 3. A rubber cushion cylinder 706 is fixedly connected to the outer wall of the transmission rod 3. A fixed bearing 707 is fixedly connected to the outer wall of the rubber cushion cylinder 706. The outer wall of the fixed bearing 707 is fixedly connected to the inner wall of the round hole on the upper side of the valve body 1. The inner diameter of the round hole provided on the valve body 1 is larger than the inner diameter of the round hole provided on the sealing plate 702. The outer diameter of the rubber cushion cylinder 706 is larger than the inner diameter of the round hole provided on the sealing plate 702. An installation window 708 is provided on the lower side of the sealing plate 702. The detection mechanism 8 is located inside the installation window 708. The hydraulic telescopic rod 704 is electrically connected to the control module. The rubber cushion cylinder 706 is a cylindrical structure made of elastic rubber material.

[0024] After the valve plate 4 is worn during long-term use, even when in the closed state, the sealing performance of its contact surface with the valve ring 9 still decays relative to the working conditions in the early stage of use. Therefore, if it is detected by the detection mechanism 8 that the sealing ability of the valve plate 4 and the valve ring 9 decreases or there is still liquid flowing in the pipeline after the valve plate 4 is closed, the hydraulic telescopic rod 704 can be started through the control module after the valve plate 4 is opened. Then, the hydraulic telescopic rod 704 can push the sealing plate 702 to deflect by a small angle. During the deflection of the sealing plate 702, the sealing plate 702 drives the gearbox 2 to move synchronously, so that the outer wall of the transmission rod 3 squeezes the rubber cushion cylinder 706 to deform, thereby supporting the transmission rod 3 to drive an angular change. Then, the valve plate 4 is closed, so that the original contact surface of the valve plate 4 and the valve ring 9 is misaligned, and then the worn positions are avoided from contacting each other, which can reduce the possibility of leakage.

[0025] As a specific implementation manner of the present application, the dislocation mechanism 7 is jointly constituted by two annular sealing rings 701 fixed on the outer wall of the valve body 1, a sealing plate 702 rotatable relative to the valve body 1, and a hydraulic telescopic rod 704 for driving the sealing plate 702 to deflect by a small angle. During daily operation, when the detection mechanism monitors that the sealing ability between the valve plate 4 and the valve ring 9 decreases or there is continuous micro-flow in the pipeline, the control module immediately sends a deflection instruction to the hydraulic telescopic rod 704. The hydraulic telescopic rod 704 drives the sealing plate 702 to complete a small-angle rotation of about several degrees. This rotation drives the transmission gearbox 2 and the transmission rod 3 to generate synchronous displacement and, by means of the elastic extrusion of the rubber gasket cylinder 706, changes the contact position between the valve plate 4 and the valve ring 9 to avoid the worn parts and restore the sealing performance. Then, the detection mechanism verifies the sealing effect again to complete the closed-loop self-check. The dislocation mechanism described in the present application combines hydraulic telescopic drive with elastic support. When sealing degradation is detected, it realizes a small-angle dislocation of the contact surface between the valve plate 4 and the valve ring 9, continuously avoids the worn areas, thereby prolonging the service life of the sealing parts, reducing the replacement frequency, having a compact structure, enabling on-line self-check and dynamic compensation without disassembly, greatly improving the safety and reliability of the butterfly valve under high-pressure and high-frequency opening and closing conditions, and significantly reducing the maintenance cost.

[0026] In the example of the present application, one end outer wall of the installation cylinder 801 located outside the valve body 1 is fixedly connected with a connecting cylinder 808. The outer wall of the connecting cylinder 808 is fixedly connected with a baffle 807. One end of the pressure detection module 802 is fixedly connected with a fixed sleeve 805. The outer wall of the fixed sleeve 805 is fixedly connected with a laser ranging module 806. The position of the laser ranging module 806 is correspondingly set with the position of the baffle 807. And both the pressure detection module 802 and the laser ranging module 806 are electrically connected to the control module. In the example of the present application, the control module includes an embedded microprocessor, a historical data storage unit and a communication unit, and can upload the real-time monitoring data to the upper computer monitoring system through a bus or wirelessly.

[0027] In the example of the present application, at the moment when the valve plate 4 closes, the sudden increase in the pressure on the upper side of the pressure detection module 802 will cause the pressure detection module 802 to push downward, and then the spring 804 will be compressed to generate tensile energy storage, and then the impact of the water flow on the pressure detection module 802 will be buffered, reducing the probability of damage to the pressure detection module 802. At the same time, the movement of the pressure detection module 802 will drive the fixed sleeve 805 and the laser ranging module 806 to move. The laser ranging module 806 records the distance between itself and the baffle 807 in real time and outputs the position change to the control module. The control module calculates the ratio of the pressure detected by the pressure detection module 802 to the distance between the laser ranging module 806 and the baffle 807, and compares this ratio with the historical data each time the pressure detection module 802 outputs the peak pressure. When the ratio fluctuates greatly, the maintenance process is started, thereby avoiding the wrong data or equipment damage caused by sensor drift of the device.

[0028] A long-lasting leak-proof real-time self-checking forged steel butterfly valve provided by the present invention drives the overall fine adjustment of the gearbox 2 through the linkage of the deflectable structural sealing plate 702 and the hydraulic telescopic rod 704, so that the transmission rod 3 drives the valve plate 4 to achieve angular deflection after wear, thereby avoiding the original contact wear area and improving the sealing reliability between it and the valve ring 9. At the same time, a rubber gasket cylinder 706 with elastic deformation ability is arranged on the outer wall of the transmission rod 3, and the structural stress is absorbed by radial compression during the deflection of the sealing plate 702 to ensure smooth transmission. A detection mechanism 8 is arranged on the lower side of the valve body 1. The pressure detection module 802 therein collects the peak pressure under the fluid impact at the moment when the butterfly valve is closed, and calculates the ratio with the upstream pressure data, and identifies the sealing attenuation trend through the control module. In addition, through the relative displacement record between the laser ranging module 806 and the baffle 807, while the pressure detection module 802 is displaced by the liquid impact, the displacement change data is output, and a leakage trend model is established by combining the pressure change to avoid misjudgment caused by sensor drift or accidental fluctuation. Each component completes information fusion under the coordinated action of the control module, realizing an integrated intelligent control solution for real-time monitoring of the operation state of the butterfly valve, wear compensation adjustment and early warning of leakage.

[0029] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or device.

[0030] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A long-lasting anti-leakage real-time self-checking forged steel butterfly valve, comprising a valve body (1) and a control module connected to the valve body (1), characterized in that: The valve body (1) is provided with a gearbox (2), the output end of the gearbox (2) is fixedly connected to a transmission rod (3), one end of the transmission rod (3) away from the gearbox (2) extends into the interior of the valve body (1) and is fixedly connected to a valve plate (4), and the inner wall of the valve body (1) is fixedly connected to a valve ring (9), the inner wall of the valve ring (9) contacts the outer wall of the valve plate (4) to form a sealing pair; The input end of the gearbox (2) is fixedly connected to a torque detection module (5), and the torque detection module (5) is electrically connected to the control module and is used to monitor torque changes during the opening and closing process of the valve; The outer side of the valve body (1) is also provided with a misalignment mechanism (7), the misalignment mechanism (7) comprising a connection assembly and a sealing plate (702), the sealing plate (702) being located on the outer side of the valve body (1), the gearbox (2) being arranged on the sealing plate (702), and the sealing plate (702) being rotatable relative to the valve body (1), so as to adjust the contact position between the valve plate (4) and the valve ring (9) when the sealing performance is reduced; The valve body (1) is also provided with a detection mechanism (8) for real-time monitoring of the change in the peak pressure when the valve is closed, so as to judge the sealing performance.

2. A long-lasting anti-leakage real-time self-checking forged steel butterfly valve according to claim 1, characterized in that: The input end of the torque detection module (5) is fixedly connected to a rotating disk (6). During the rotation of the rotating disk (6), the torque detection module (5) monitors and collects the force of the rotating disk (6) during the rotation process and uploads it to the control module. The control module compares the torque change trend diagram during the rotation of the rotating disk (6) with historical data to perform real-time self-checking.

3. A long-lasting anti-leakage real-time self-checking forged steel butterfly valve according to claim 1, characterized in that: A circular hole is provided on the valve body (1) at a position of the gearbox (2) and passes through the valve body (1), and the lower end of the transmission rod (3) extends through the circular hole to the interior of the valve body (1).

4. A long-lasting anti-leakage real-time self-checking forged steel butterfly valve according to claim 3, characterized in that: The dislocation mechanism (7) further comprises at least two sealing rings (701) and a hydraulic telescopic rod (704); the sealing plate (702) is located outside the two sealing rings (701); the sealing plate (702) is rotatably connected to the valve body (1) via a bearing; two ends of the hydraulic telescopic rod (704) are respectively hinged to the sealing plate (702) and the outer wall of the valve body (1) via a first connecting block (703) and a second connecting block (705); the hydraulic telescopic rod (704) is electrically connected to a control module and is used to drive the sealing plate (702) to rotate.

5. A long-lasting anti-leakage real-time self-checking forged steel butterfly valve according to claim 4, characterized in that: The sealing plate (702) is provided with a circular hole, the outer wall of the transmission rod (3) is fixedly connected with a rubber washer (706), the outer side of the rubber washer (706) is fixedly connected with a fixed bearing (707), the outer wall of the fixed bearing (707) is fixedly connected to the inner wall of the circular hole on the sealing plate (702), and when the sealing plate (702) rotates relative to the valve body (1), the rubber washer (706) is used to provide deformation buffer for the angle change of the transmission rod (3) when the sealing plate (702) is deflected.

6. According to claim 5, a long-lasting leak-proof real-time self-checking forged steel butterfly valve, the inner wall of the upper circular hole of the sealing plate (702) contacts the outer wall of the transmission rod (3), the outer wall of the transmission rod (3) is fixedly connected with a rubber gasket (706), the outer wall of the rubber gasket (706) is fixedly connected with a fixed bearing (707), the outer wall of the fixed bearing (707) is fixedly connected with the inner wall of the upper circular hole of the valve body (1), and the inner diameter of the circular hole opened on the valve body (1) is larger than the inner diameter of the circular hole opened on the sealing plate (702), and the outer diameter of the rubber gasket (706) is larger than the inner diameter of the circular hole opened on the sealing plate (702).

7. According to claim 6, a long-lasting anti-leakage real-time self-checking forged steel butterfly valve is provided with a detection hole that penetrates inside and outside at the lower side of the valve body (1), and a mounting window (708) is provided at the lower side of the sealing plate (702), and the detection mechanism (8) is located inside the mounting window (708). The detection mechanism (8) comprises a pressure detection module (802), and the input end of the pressure detection module (802) extends into the detection hole of the valve body (1), so as to collect the water hammer pressure peak value at the moment when the valve plate (4) is closed.

8. A long-lasting anti-leakage real-time self-checking forged steel butterfly valve according to claim 7, characterized in that: The detection mechanism (8) comprises a mounting tube (801), the outer wall of the mounting tube (801) being fixedly connected to the inner wall of a detection hole provided at the lower side of the valve body (1), the pressure detection module (802) being arranged inside the mounting tube (801), the outer wall of the pressure detection module (802) being provided with a connecting ring (803), the outer wall of the connecting ring (803) being in contact with the middle inner wall of the mounting tube (801), a spring (804) being provided on one side of the connecting ring (803), the other end of the spring (804) being fixedly connected to the inner wall of the mounting tube (801), and the input end of the pressure detection module (802) extending to the outside of the mounting tube (801).

9. A long-lasting anti-leakage real-time self-checking forged steel butterfly valve according to claim 8, characterized in that: The outer wall of one end of the mounting tube (801) located outside the valve body (1) is fixedly connected to a connecting tube (808), a baffle (807) is arranged on the connecting tube (808), one end of the pressure detection module (802) is fixedly connected to a fixing sleeve (805), a laser distance measuring module (806) is arranged on the fixing sleeve (805), and the position of the laser distance measuring module (806) is arranged corresponding to the position of the baffle (807) for monitoring the displacement change of the pressure detection module (802).

10. A long-lasting anti-leakage real-time self-checking forged steel butterfly valve according to claim 9, characterized in that: The pressure detection module (802) and the laser distance measurement module (806) are both electrically connected to the control module.

Images