Adjustable high pressure resistant triple offset butterfly valve

Abstract

The application provides an adjustable high-pressure-resistant three-eccentric butterfly valve, and relates to the technical field of valves.The adjustable high-pressure-resistant three-eccentric butterfly valve comprises a high-pressure-resistant three-eccentric butterfly valve body, a linkage adjusting mechanism is arranged in the middle of the high-pressure-resistant three-eccentric butterfly valve body, and a monitoring and early warning mechanism is arranged at the bottom of the high-pressure-resistant three-eccentric butterfly valve body.The monitoring and early warning mechanism is arranged, when trace leakage occurs at the connection between the high-pressure-resistant three-eccentric butterfly valve body and the connecting pipe, the water collecting bucket can collect the leaked water and drive the trigger rod to descend, so that the trigger piece presses the press-type trigger switch, the sound and light alarm is triggered to timely send a sound and light signal, and the inspection personnel are reminded to maintain;at the same time, the descent of the trigger rod also drives the marker pen to leave marks on the marker plate, and the cooperation of the indicating plate and the scale plate directly displays the water level change and the leakage degree, so that the operator can quickly judge the leakage position and the development trend, and the design can timely find the water leakage risk in the early stage.

Description

Technical Field

[0001] This invention relates to the field of valves, and more specifically, to an adjustable, high-pressure resistant triple eccentric butterfly valve. Background Technology

[0002] High-pressure butterfly valves are widely used in industrial pipeline systems, primarily for precise control of fluid flow, pressure, and direction. These valves are suitable for various industries, including chemical, petroleum, natural gas, power, metallurgy, and municipal water supply. They maintain the stability of valve opening and closing and the sealing of the fluid passage under high pressure, high temperature, or highly corrosive media conditions. By rotating the valve plate, the butterfly valve can achieve rapid opening and closing and continuous adjustment, thereby controlling the flow distribution and pressure changes of the medium in the pipeline, while reducing the energy consumption of the pipeline system.

[0003] However, several problems still exist in actual use. First, the sealing performance of the butterfly valve at the pipeline connection is unstable, especially under high pressure or long-term operation. Small leaks are prone to occur on the valve sealing surface. These micro-leakages are often difficult to detect in time, leading to valve body corrosion, pipeline pressure fluctuations, and even equipment shutdown or safety accidents. Second, existing technologies usually rely on fixed sealing structures or single pressure regulating devices to ensure valve sealing. Although this can reduce leakage to some extent, it cannot detect leaks in the early stages, nor can it flexibly adjust the valve plate opening and closing angle and sealing pre-tightening force under various operating conditions. Third, some existing leak prevention measures, such as traditional sealing rings, bolt tightening, or manual inspection, have problems such as slow response, long maintenance cycles, and easy to miss or false alarms, and cannot achieve real-time, visual leak monitoring and recording.

[0004] Therefore, we have made improvements and proposed an adjustable, high-pressure resistant triple eccentric butterfly valve. Summary of the Invention

[0005] The purpose of this invention is to provide an adjustable high-pressure resistant triple eccentric butterfly valve, which solves the problems mentioned in the background art.

[0006] Specifically, this application describes an adjustable, high-pressure resistant triple-eccentric butterfly valve. It includes a high-pressure resistant triple eccentric butterfly valve body, with a linkage adjustment mechanism in the middle of the high-pressure resistant triple eccentric butterfly valve body and a monitoring and early warning mechanism at the bottom of the high-pressure resistant triple eccentric butterfly valve body; The monitoring and early warning mechanism includes a water tank, a trigger rod, a trigger element, a push-button trigger switch, an audible and visual alarm, and a reset spring rod. The trigger rod is fixedly connected to the bottom end of the water tank, and the trigger element is threadedly connected to the bottom end of the trigger rod. The bottom of the trigger element is placed on top of the push-button trigger switch. The audible and visual alarm is electrically connected to the push-button trigger switch. The free ends of the two reset spring rods are fixedly connected to the bottom end of the water tank. The linkage adjustment mechanism includes a motor, a first support arm, a second support arm, an adjusting rod, a first connecting member, a second connecting member, and a first transmission shaft. The first connecting member is rotatably connected to the outer side of the first support arm, and a second connecting member is provided on one side of the first connecting member. The two ends of the adjusting rod are threadedly connected to the first connecting member and the second connecting member, respectively. The second support arm is rotatably connected to the inner side of the second connecting member. The first transmission shaft is fixedly connected to the bottom end of the second support arm. The output end of the motor is fixedly connected to the second transmission shaft, and the outer side of the second transmission shaft is fixedly connected to the inner side of the first support arm.

[0007] As a preferred technical solution of this application, both ends of the high-pressure resistant triple eccentric butterfly valve body are connected to connecting pipes, and both sides of the high-pressure resistant triple eccentric butterfly valve body are fitted with a first protective ring and a second protective ring, and two adjacent first protective rings and second protective rings are connected to each other by bolt assemblies.

[0008] As a preferred technical solution of this application, the inner sides of the first protective ring and the second protective ring are both provided with mounting grooves, the top of the second protective ring is engaged with a transparent sealing plug, the bottom of the high-pressure resistant triple eccentric butterfly valve body is fixedly connected with a connecting plate, and the top of the connecting plate is fixedly connected with two guide rails.

[0009] As a preferred technical solution of this application, the two sides of the water container are slidably connected to the inner sides of two guide rails, and the inner sides of the two guide rails are slidably connected to limit members. The bottom end of the reset spring rod is fixedly connected to the top end of the limit member, and the outer sides of the limit member and the guide rails are provided with locking holes.

[0010] As a preferred technical solution of this application, both guide rails are provided with locking pins on their outer sides, and one end of the locking pin passes through the locking hole on the outer side of the guide rail and the locking hole on the outer side of the limiting member in sequence.

[0011] As a preferred technical solution of this application, the bottom end of the push-button trigger switch is fixedly connected to the inner side of the connecting plate, and the outer side of the connecting plate is fixedly connected to the audible and visual alarm.

[0012] As a preferred technical solution of this application, an installation plate is fixedly connected to the inner wall of the connecting plate, a marking plate is engaged with the outer side of the installation plate, a limit rod is fixedly connected to the middle of the connecting plate, an installation component is fixedly connected to the outer side of the trigger rod, and the middle of the installation component is vertically slidably connected to the limit rod.

[0013] As a preferred technical solution of this application, one end of the mounting component is fixedly connected to a spring rod, one end of the spring rod is fixedly connected to a marker pen, one end of the marker pen is attached to the outside of the marking plate, an indicator plate is fixedly connected to the outside of the spring rod, a scale plate is fixedly connected to the outside of the mounting plate, and one end of the indicator plate is attached to the outside of the scale plate.

[0014] As a preferred technical solution of this application, the top end of the high-pressure resistant triple eccentric butterfly valve body is fixedly connected to a first connecting frame and a second connecting frame, the inner side of the first connecting frame is rotatably connected to a first drive shaft, and the inner side of the second connecting frame is rotatably connected to a second drive shaft.

[0015] As a preferred technical solution of this application, the bottom end of the motor is fixedly connected to the top end of the second transmission shaft, and the water-holding hopper is placed at the bottom of the first protective ring.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows: In the scheme of this application: 1. By setting up a monitoring and early warning mechanism, when a small leak occurs at the connection between the high-pressure triple eccentric butterfly valve body and the connecting pipe, the water collection hopper can collect the leaking water and drive the trigger rod to descend. This causes the trigger element to press the push-button trigger switch, triggering the audible and visual alarm to promptly issue an audible and visual signal, reminding the inspection personnel to perform maintenance. At the same time, the descent of the trigger rod also causes the marker pen to leave a mark on the marking plate. The water level change and the degree of leakage are displayed intuitively through the cooperation of the indicator plate and the scale plate, allowing operators to quickly determine the location and development trend of the leak. This design can detect the risk of leakage in the early stage, avoiding the leakage from expanding and causing corrosion of the high-pressure triple eccentric butterfly valve body, seal damage, or abnormal pipeline pressure. This solves the problem in the existing technology that small leaks are difficult to detect in time and are prone to causing equipment damage and downtime. 2. By installing water-sensitive curing agent in the first and second protective rings, when leakage occurs at the connection pipe of the high-pressure triple eccentric butterfly valve body, the water-sensitive curing agent will immediately change color upon contact with water and quickly solidify to form an emergency waterproof layer, providing initial blockage of the leakage. This design not only visually indicates the location of the leakage through color change, but also forms a temporary seal in the early stage of leakage, reducing the risk of media leakage and avoiding safety hazards caused by emergency intervention by personnel. The rapid reaction and solidification characteristics of the water-sensitive curing agent enable the butterfly valve to maintain its waterproof capability under high-pressure conditions, significantly improving the safety and reliability of the system. This solves the problem in the existing technology that the valve cannot automatically stop the leakage in the early stage of leakage and requires manual handling. 3. By using a multi-stage sealing ring system formed by the first and second protective rings and bolt assemblies, the high-pressure triple eccentric butterfly valve body can maintain stable sealing performance even under high pressure conditions during opening and closing. The installation grooves, transparent sealing plugs, and connecting plates of the first and second protective rings enable the sealing rings to automatically compensate for wear caused by valve plate rotation or long-term use, while reducing the risk of media penetration and ensuring the safe operation of the pipeline system. This multi-stage protection design can maintain valve body sealing under high pressure differential and high flow conditions, extend the service life of the sealing rings, and reduce operating resistance, thereby solving the problems of easy wear of the sealing surface, short sealing life, and high opening and closing resistance of butterfly valves under high pressure in the prior art. 4. By setting up a linkage adjustment mechanism, the opening and closing angle and sealing pre-tightening force of the high-pressure triple eccentric butterfly valve body plate can be precisely adjusted under different flow and pressure conditions. The motor drives the second transmission shaft to rotate, and through the multi-stage linkage of the first support arm, the second support arm, the first connecting part, the second connecting part, and the adjusting rod, the first transmission shaft drives the valve plate to rotate smoothly, thereby controlling the opening and closing state of the valve. This adjustment mechanism can adapt to various working conditions such as high pressure and large flow or low pressure and small flow, so that the valve can maintain sealing and operational flexibility under different conditions, and prevent leakage or increased resistance due to excessive tightness or looseness. This solves the problems of existing fixed pre-tightening force structures being unable to accommodate multiple working conditions, large valve opening and closing resistance, and insufficient sealing. Attached Figure Description

[0017] Figure 1 A schematic diagram of the structure of an adjustable high-pressure resistant triple eccentric butterfly valve provided in this application; Figure 2 A schematic diagram of the bottom structure of the adjustable high-pressure resistant triple eccentric butterfly valve body provided in this application; Figure 3 A schematic diagram of one side of the body of an adjustable high-pressure resistant triple eccentric butterfly valve provided in this application. Figure 4 A schematic diagram of the structure of the body of an adjustable high-pressure resistant triple eccentric butterfly valve provided in this application. Figure 5 This application provides an adjustable, high-pressure resistant triple eccentric butterfly valve. Figure 4 Enlarged view of point A in the middle; Figure 6 An exploded view of the first protective ring portion of an adjustable high-pressure resistant triple eccentric butterfly valve provided in this application; Figure 7 A schematic diagram of the motor section of an adjustable high-pressure resistant triple eccentric butterfly valve provided in this application; Figure 8This application provides an adjustable, high-pressure resistant triple eccentric butterfly valve. Figure 7 Enlarged view at point B in the middle; Figure 9 A schematic diagram of the connecting pipe portion of an adjustable high-pressure resistant triple eccentric butterfly valve provided in this application; Figure 10 This application provides an adjustable, high-pressure resistant triple eccentric butterfly valve. Figure 9 Enlarged view at point C; Figure 11 A schematic diagram of the water hopper section of an adjustable high-pressure resistant triple eccentric butterfly valve provided in this application; Figure 12 This application provides an adjustable, high-pressure resistant triple eccentric butterfly valve. Figure 11 Enlarged view of point D in the middle.

[0018] The image shows: 1. Connecting pipe; 2. High-pressure resistant triple eccentric butterfly valve body; 3. Linkage adjustment mechanism; 301. Motor; 302. First connecting frame; 303. First support arm; 304. First connecting piece; 305. Adjusting rod; 306. Second connecting piece; 307. Second support arm; 308. First drive shaft; 309. Second connecting frame; 310. Second drive shaft; 4. Monitoring and early warning mechanism; 401. Audible and visual alarm; 402. Connecting plate; 403. First protective ring; 404. Guide rail; 405. 406. Transparent sealing plug; 407. Bolt assembly; 408. Mounting groove; 409. Second protective ring; 410. Water container; 411. Locking pin; 412. Locking hole; 413. Trigger rod; 414. Trigger element; 415. Reset spring rod; 416. Limiting element; 417. Press-type trigger switch; 418. Limiting rod; 419. Scale plate; 420. Mounting plate; 421. Marking plate; 422. Indicator plate; 423. Marking pen; 424. Mounting element; 425. Spring rod. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, 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.

[0020] Therefore, the following detailed description of embodiments of the present invention is not intended to limit the scope of the claimed invention, but merely illustrates some embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0021] It should be noted that, unless otherwise specified, the embodiments and features and technical solutions in the present invention can be combined with each other.

[0022] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0023] In the description of this invention, it should be noted that the terms "upper," "lower," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this invention is in use, or the orientation or positional relationship commonly understood by those skilled in the art. These terms are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention. In addition, the terms "first," "second," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0024] Please see Figures 1 to 12 The present invention provides a technical solution: an adjustable high-pressure resistant triple eccentric butterfly valve, including a high-pressure resistant triple eccentric butterfly valve body 2, a linkage adjustment mechanism 3 in the middle of the high-pressure resistant triple eccentric butterfly valve body 2, and a monitoring and early warning mechanism 4 at the bottom of the high-pressure resistant triple eccentric butterfly valve body 2. The monitoring and early warning mechanism 4 includes a water tank 409, a trigger rod 412, a trigger element 413, a push-button trigger switch 416, an audible and visual alarm 401, and a reset spring rod 414. The trigger rod 412 is fixedly connected to the bottom end of the water tank 409, and the trigger element 413 is threadedly connected to the bottom end of the trigger rod 412. The bottom of the trigger element 413 is placed on the top of the push-button trigger switch 416. The audible and visual alarm 401 is electrically connected to the push-button trigger switch 416. The free ends of the two reset spring rods 414 are fixedly connected to the bottom end of the water tank 409. The linkage adjustment mechanism 3 includes a motor 301, a first support arm 303, a second support arm 307, an adjusting rod 305, a first connecting member 304, a second connecting member 306, and a first transmission shaft 308. The first connecting member 304 is rotatably connected to the outer side of the first support arm 303. The second connecting member 306 is provided on one side of the first connecting member 304. The two ends of the adjusting rod 305 are threadedly connected to the first connecting member 304 and the second connecting member 306, respectively. The second support arm 307 is rotatably connected to the inner side of the second connecting member 306. The first transmission shaft 308 is fixedly connected to the bottom end of the second support arm 307. The output end of the motor 301 is fixedly connected to the second transmission shaft 310. The outer side of the second transmission shaft 310 is fixedly connected to the inner side of the first support arm 303.

[0025] like Figures 1-7As shown, in a preferred embodiment, based on the above method, further, both ends of the high-pressure resistant triple eccentric butterfly valve body 2 are connected to connecting pipes 1, and both sides of the high-pressure resistant triple eccentric butterfly valve body 2 are fitted with first protective rings 403 and second protective rings 408. Adjacent first protective rings 403 and second protective rings 408 are connected to each other by bolt assemblies 406. Both ends of the high-pressure resistant triple eccentric butterfly valve body 2 are connected to connecting pipes 1, and the connecting pipes 1 are made of carbon steel lined with polytetrafluoroethylene to ensure corrosion resistance of high-pressure fluids. The valve body is fitted with first protective rings 403 and second protective rings 408 on both sides. The protective rings are made of high-temperature resistant engineering plastics. The protective rings are tightly fixed to the valve body by bolt assemblies 406. Adjacent first protective rings 403 and second protective rings 408 are locked to each other by bolt assemblies 406. During operation, the clamping force of the protective rings can be adjusted by tightening the bolts to enhance the sealing between the valve body and the pipeline, prevent the leakage of high-pressure media, facilitate installation, simplify maintenance and operation, and play a role in isolation and safety protection in the early stage of pipeline leakage, while ensuring long-term stable operation of the valve.

[0026] like Figures 8-12 As shown, in a preferred embodiment, based on the above method, further, the inner sides of both the first protective ring 403 and the second protective ring 408 are provided with mounting grooves 407. A transparent sealing plug 405 is engaged with the top of the second protective ring 408. A connecting plate 402 is fixedly connected to the bottom of the high-pressure resistant triple eccentric butterfly valve body 2. Two guides are fixedly connected to the top of the connecting plate 402. The inner sides of both the first protective ring 403 and the second protective ring 408 are provided with mounting grooves 407. The mounting grooves 407 adopt a C-shaped groove design, and a water-sensitive curing agent can be embedded in the groove for automatic color change and solidification in the event of a small leak. The second protective ring... The top of the ring 408 engages with the transparent sealing plug 405, which is made of pressure-resistant transparent polycarbonate material, allowing for clear observation of leakage. The bottom of the high-pressure resistant triple eccentric butterfly valve body 2 is fixedly connected to the connecting plate 402, which is made of thickened stainless steel. Two guide rails 404 are fixed at the top of the connecting plate 402. The guide rails 404 are chrome-plated precision guide rails 404, which can be slidably connected to the water tank 409 to guide the leaking water. During operation, the water tank 409 slides smoothly on the guide rail 404, and the trigger rod 412 moves up and down with the water level, realizing a sensitive response of the early warning mechanism and improving system safety and maintenance efficiency.

[0027] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 and Figure 8As shown, in a preferred embodiment, based on the above method, further, the two sides of the water container 409 are slidably connected to the inner sides of two guide rails 404, and the inner sides of both guide rails 404 are slidably connected to limit members 415. The bottom end of the reset spring rod 414 is fixedly connected to the top end of the limit member 415. Locking holes 411 are provided on the outer sides of both the limit member 415 and the guide rails 404. The two sides of the water container 409 are slidably connected to the inner sides of two guide rails 404. The guide rails 404 are made of high-hardness chrome-plated steel, and the inner sides are slidably connected to the limit members 415. The positioning component 415 is made of wear-resistant alloy material. The bottom end of the reset spring rod 414 is fixedly connected to the top end of the limiting component 415. Locking holes 411 are opened on the outer side of the guide rail 404 and the limiting component 415. During operation, the water tank 409 rises and falls with the leakage, driving the trigger rod 412 to descend and trigger the switch. The reset spring rod 414 provides restoring force, and the limiting component 415 ensures that the water tank 409 slides smoothly in the guide rail 404 to prevent shaking. The operation is simple, and the water volume change can be intuitively reflected by the indicator plate 421 and the scale plate 418, which improves the monitoring accuracy and valve operation safety.

[0028] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 and Figure 8 As shown, in a preferred embodiment, based on the above method, a further step is to provide locking pins 410 on the outer sides of both guide rails 404. One end of the locking pin 410 passes through the locking hole 411 on the outer side of the guide rail 404 and the locking hole 411 on the outer side of the limiting member 415. The locking pin 410 is made of high-strength stainless steel and one end passes through the locking hole 411 on the outer side of the guide rail 404 and the locking hole 411 on the outer side of the limiting member 415. The locking pin 410 fixes the guide rail 404 and the limiting member 415, ensuring that the water tank 409 moves smoothly on the guide rail 404 without deviation. During operation, the guide rail 404 can be maintained or replaced by disassembling the locking pin 410. The structure is compact, preventing abnormal displacement of the leakage trigger mechanism, ensuring the reliability of the trigger rod 412, the trigger member 413 and the push-button trigger switch 416, and improving the valve's safety warning capability and long-term stable operation effect.

[0029] like Figures 9-12As shown, in a preferred embodiment, based on the above method, the bottom end of the push-button trigger switch 416 is fixedly connected to the inner side of the connecting plate 402, and the outer side of the connecting plate 402 is fixedly connected to the audible and visual alarm 401. The trigger switch adopts a waterproof micro switch, and the audible and visual alarm 401 adopts a combination of high-brightness LED and buzzer. During operation, the water tank 409 drives the trigger rod 412 to descend and press the trigger element 413 to trigger the switch. The alarm simultaneously sounds and lights to indicate leakage. The operation is simple and reliable, and maintenance is convenient. Users can quickly judge the location and degree of leakage, monitor the valve leakage status in real time, and improve system safety and response speed.

[0030] like Figures 9-12 As shown, in a preferred embodiment, based on the above method, further, a mounting plate 419 is fixedly connected to the inner wall of the connecting plate 402, a marking plate 420 is engaged with the outer side of the mounting plate 419, a limit rod 417 is fixedly connected to the middle of the connecting plate 402, and a mounting member 423 is fixedly connected to the outer side of the trigger rod 412. The middle part of the mounting member 423 is vertically slidably connected to the limit rod 417. The mounting plate 419 is fixedly installed on the inner wall of the connecting plate 402. The mounting plate 419 is made of stainless steel plate, and the outer side... The marking plate 420 is made of transparent polycarbonate. A limiting rod 417 is fixed in the middle of the connecting plate 402. A mounting part 423 is fixedly connected to the outside of the trigger rod 412. The middle part of the mounting part 423 is vertically slidably connected to the limiting rod 417. During operation, the mounting part 423 slides synchronously with the trigger rod 412 as it descends, which drives the elastic rod 424 to push the marking pen 422 to leave a mark on the marking plate 420. This allows for a direct record of the leakage triggering process. The operation is simple and can help determine the amount and location of the leakage, improving maintenance and analysis efficiency.

[0031] like Figures 9-12As shown, in a preferred embodiment, based on the above method, further, one end of the mounting member 423 is fixedly connected to a spring rod 424, one end of the spring rod 424 is fixedly connected to a marker pen 422, one end of the marker pen 422 is attached to the outside of the marking plate 420, an indicator plate 421 is fixedly connected to the outside of the spring rod 424, a scale plate 418 is fixedly connected to the outside of the mounting plate 419, one end of the indicator plate 421 is attached to the outside of the scale plate 418, one end of the mounting member 423 is fixedly connected to the spring rod 424, and one end of the spring rod 424 is fixedly connected to the marker pen 422. The marker 422 is attached to the outside of the marking plate 420. The outer side of the elastic rod 424 is fixedly connected to the indicator plate 421. The outer side of the mounting plate 419 is fixed to the scale plate 418. The indicator plate 421 is attached to the outer side of the scale plate 418. During operation, the water tank 409 descends, driving the trigger rod 412 and the mounting part 423. The elastic rod 424 pushes the marker 422 to leave a visible mark on the marking plate 420. At the same time, the indicator plate 421 displays the water level change scale. The operation is simple and can accurately determine the leakage amount, improve the visualization and analysis convenience of leakage records, and realize intelligent valve monitoring.

[0032] like Figures 1-7 As shown, in a preferred embodiment, based on the above method, the top end of the high-pressure resistant triple eccentric butterfly valve body 2 is further fixedly connected to a first connecting frame 302 and a second connecting frame 309. The inner side of the first connecting frame 302 is rotatably connected to a first drive shaft 308, and the inner side of the second connecting frame 309 is rotatably connected to a second drive shaft 310. The top end of the high-pressure resistant triple eccentric butterfly valve body 2 is fixedly connected to a first connecting frame 302 and a second connecting frame 309. The inner side of the first connecting frame 302 is rotatably connected to the first drive shaft 308, and the inner side of the second connecting frame 309 is rotatably connected to the second drive shaft 310. The connecting frames are made of high-strength aluminum alloy, and the drive shafts are made of high-strength alloy steel. During operation, the output end of the motor 301 drives the second drive shaft 310 to rotate. The second drive shaft 310 drives the first support arm 303, the second support arm 307, and the connecting parts to rotate in linkage, accurately controlling the opening and closing angle of the valve plate, realizing high-precision adjustment and smooth opening and closing of the valve, and improving the valve operating efficiency and sealing reliability.

[0033] like Figures 1-7As shown, in a preferred embodiment, based on the above method, the bottom end of the motor 301 is fixedly connected to the top end of the second transmission shaft 310, and the water tank 409 is placed at the bottom of the first protective ring 403. The motor 301 is an explosion-proof servo motor 301. During operation, the rotation of the motor 301 can drive the second transmission shaft 310 and the linkage mechanism to control the opening and closing of the valve body. At the same time, the water tank 409 collects the leaked water. The alarm is triggered by the reset spring rod 414, the trigger rod 412 and the trigger element 413. The leakage is visually recorded by combining the marking plate 420, the scale plate 418 and the indicator plate 421. The operation is simple and the maintenance is efficient, realizing the efficient linkage and safety protection functions of valve adjustment and monitoring.

[0034] Specifically, when the high-pressure resistant triple eccentric butterfly valve body 2 is in operation: the first protective ring 403 and the second protective ring 408 set on both sides of the high-pressure resistant triple eccentric butterfly valve body 2 achieve sealing and protection of the butterfly valve connection. When a small amount of leakage occurs at the connection between the high-pressure resistant triple eccentric butterfly valve body 2 and the connecting pipe 1 due to pressure fluctuations, seal aging, or loose bolts, the leaked water first enters the inner area of ​​the first protective ring 403 and the second protective ring 408. Since the installation groove 407 of the two protective rings is pre-filled with a water-sensitive curing agent, the water-sensitive curing agent will quickly undergo a color change reaction after encountering water, changing from light to dark color, and solidifying from a flowing state to a gel or solid state in a short time, thereby forming a preliminary temporary waterproof sealing layer. This process can not only play a preliminary blocking role for micro-leakage, but also indicate to maintenance personnel that the connection has entered an abnormal state through the color change effect. When the leakage worsens or the discolored and solidified water-sensitive curing agent cannot completely stop the leakage, the seeping water will fall into the water tank 409 along the inner side of the protective ring. As the leakage increases, the water level inside the water tank 409 gradually rises, and the weight of the water tank 409 increases accordingly. Under the elastic force of the two reset spring rods 414, the water tank 409 usually maintains the initial position at the top. When the water volume increases enough to overcome the elastic force of the reset spring rods 414, the water tank 409 begins to slide downward and descends smoothly along the inner side of the two guide rails 404. During the descent, the trigger rod 412 fixedly connected to the bottom of the water tank 409 moves downward and drives the trigger element 413 at the bottom of the trigger rod 412 to gradually approach the top of the push-button trigger switch 416. When the trigger 413 touches and presses the push-button trigger switch 416, the push-button trigger switch 416 immediately sends an electrical signal to the audible and visual alarm 401, causing the audible and visual alarm 401 to start quickly and emit a clear audible and visual alarm. This alarm can remind the inspection personnel in a short time that the equipment has a relatively serious leak and that it is necessary to stop the pipeline operation or carry out maintenance work in time. At the same time, during the descent of the trigger rod 412, the mounting part 423 fixedly connected to the outside of the trigger rod 412 slides vertically along the limit rod 417. The elastic rod 424 at one end of the mounting part 423 pushes the marker pen 422 to stick to the outside of the marking plate 420 under the elastic action, so that the marker pen 422 leaves a continuous sliding mark on the marking plate 420. This mark can serve as an important basis for judging the degree of leakage development, trigger time, and displacement of the trigger rod 412, which is convenient for subsequent maintenance personnel to analyze and record. In addition, the indicator plate 421, which is fixedly connected to the outside of the mounting component 423, will fit tightly against the outside of the scale plate 418 when it slides down, thus forming a visual displacement indication effect, enabling staff to intuitively judge the amount of water hopper 409 moving down and the degree of leakage, further improving the reliability of safety monitoring. When adjusting the working state of the high-pressure resistant triple eccentric butterfly valve body 2, the linkage adjustment mechanism 3 plays a key role. After the motor 301 is powered on, its output end drives the second transmission shaft 310 to rotate. The second transmission shaft 310 is fixedly connected to the inner side of the first support arm 303, thereby driving the first support arm 303 to rotate accordingly. The first connecting piece 304 on the outer side of the first support arm 303 moves synchronously during the transmission process, and drives the second connecting piece 306 threadedly connected to it to make corresponding displacement through the adjusting rod 305, so that the second support arm 307 fixed inside the second connecting piece 306 changes angle. As the second support arm 307 rotates, the first transmission shaft 308 fixedly connected to its bottom end rotates synchronously. The first transmission shaft 308 is linked with the valve plate structure inside the high-pressure resistant triple eccentric butterfly valve body 2. By precisely controlling the angle of the first transmission shaft 308, the valve body can smoothly transition between the opening and closing states. The threaded connection of the adjusting rod 305 allows for fine-tuning of the distance between the connecting parts and the rotation angle of the support arm according to usage requirements, thereby achieving higher precision valve opening control. The multi-stage mechanical linkage between the motor 301, the support arm, the connecting parts, and the transmission shaft enables this device to have higher adjustment sensitivity and stability, making it suitable for precise control of fluid flow under high-pressure conditions.

[0035] The above embodiments are only used to illustrate the present invention and are not intended to limit the technical solutions described herein. Although the present invention has been described in detail with reference to the above embodiments, the present invention is not limited to the specific embodiments described above. Therefore, any modifications or equivalent substitutions to the present invention, as well as all technical solutions and improvements that do not depart from the spirit and scope of the invention, are covered within the scope of the claims of the present invention.

Claims

1. An adjustable, high-pressure resistant triple eccentric butterfly valve, characterized in that, Includes a high-pressure resistant triple eccentric butterfly valve body (2), the middle of which is provided with a linkage adjustment mechanism (3), and the bottom of which is provided with a monitoring and early warning mechanism (4). The monitoring and early warning mechanism (4) includes a water tank (409), a trigger rod (412), a trigger element (413), a push-button trigger switch (416), an audible and visual alarm (401), and a reset spring rod (414). The bottom end of the water tank (409) is fixedly connected to the trigger rod (412), and the bottom end of the trigger rod (412) is threadedly connected to the trigger element (413). The bottom of the trigger element (413) is placed on top of the push-button trigger switch (416). The audible and visual alarm (401) is electrically connected to the push-button trigger switch (416). The free ends of the two reset spring rods (414) are fixedly connected to the bottom end of the water tank (409). The linkage adjustment mechanism (3) includes a motor (301), a first support arm (303), a second support arm (307), an adjustment rod (305), a first connector (304), a second connector (306), and a first transmission shaft (308). The first support arm (303) is rotatably connected to the outer side of the first connector (304), and a second connector (306) is provided on one side of the first connector (304). The two ends of the adjustment rod (305) are threadedly connected to the first connector (304) and the second connector (306) respectively. The second support arm (307) is rotatably connected to the inner side of the second connector (306). The bottom end of the second support arm (307) is fixedly connected to the first transmission shaft (308). The output end of the motor (301) is fixedly connected to the second transmission shaft (310), and the outer side of the second transmission shaft (310) is fixedly connected to the inner side of the first support arm (303).

2. The adjustable high-pressure resistant triple eccentric butterfly valve according to claim 1, characterized in that, Both ends of the high-pressure resistant triple eccentric butterfly valve body (2) are connected to connecting pipes (1). Both sides of the high-pressure resistant triple eccentric butterfly valve body (2) are fitted with a first protective ring (403) and a second protective ring (408). Two adjacent first protective rings (403) and second protective rings (408) are connected to each other by bolt assemblies (406).

3. The adjustable high-pressure resistant triple eccentric butterfly valve according to claim 2, characterized in that, The first protective ring (403) and the second protective ring (408) are both provided with mounting grooves (407). The top of the second protective ring (408) is fitted with a transparent sealing plug (405). The bottom of the high-pressure resistant triple eccentric butterfly valve body (2) is fixedly connected with a connecting plate (402). The top of the connecting plate (402) is fixedly connected with two guide rails (404).

4. The adjustable high-pressure resistant triple eccentric butterfly valve according to claim 3, characterized in that, The two sides of the water container (409) are slidably connected to the inner sides of the two guide rails (404). The inner sides of the two guide rails (404) are slidably connected to the limit member (415). The bottom end of the reset spring rod (414) is fixedly connected to the top end of the limit member (415). The limit member (415) and the outer side of the guide rail (404) are both provided with locking holes (411).

5. An adjustable high-pressure resistant triple eccentric butterfly valve according to claim 4, characterized in that, Both guide rails (404) are provided with locking pins (410) on their outer sides. One end of the locking pin (410) passes through the locking hole (411) on the outer side of the guide rail (404) and the locking hole (411) on the outer side of the limiting member (415) in sequence.

6. An adjustable high-pressure resistant triple eccentric butterfly valve according to claim 5, characterized in that, The bottom end of the push-button trigger switch (416) is fixedly connected to the inner side of the connecting plate (402), and the outer side of the connecting plate (402) is fixedly connected to the sound and light alarm (401).

7. An adjustable high-pressure resistant triple eccentric butterfly valve according to claim 6, characterized in that, An installation plate (419) is fixedly connected to the inner wall of the connecting plate (402), and a marking plate (420) is engaged with the outer side of the installation plate (419). A limit rod (417) is fixedly connected to the middle part of the connecting plate (402), and an installation component (423) is fixedly connected to the outer side of the trigger rod (412). The middle part of the installation component (423) is vertically slidably connected to the limit rod (417).

8. An adjustable high-pressure resistant triple eccentric butterfly valve according to claim 7, characterized in that, One end of the mounting component (423) is fixedly connected to a spring rod (424), and one end of the spring rod (424) is fixedly connected to a marker pen (422). One end of the marker pen (422) is attached to the outside of the marking plate (420). An indicator plate (421) is fixedly connected to the outside of the spring rod (424). A scale plate (418) is fixedly connected to the outside of the mounting plate (419), and one end of the indicator plate (421) is attached to the outside of the scale plate (418).

9. An adjustable high-pressure resistant triple eccentric butterfly valve according to claim 8, characterized in that, The top of the high-pressure resistant triple eccentric butterfly valve body (2) is fixedly connected to a first connecting frame (302) and a second connecting frame (309). The first connecting frame (302) is rotatably connected to a first drive shaft (308), and the second connecting frame (309) is rotatably connected to a second drive shaft (310).

10. An adjustable high-pressure resistant triple eccentric butterfly valve according to claim 9, characterized in that, The bottom end of the motor (301) is fixedly connected to the top end of the second transmission shaft (310), and the water container (409) is placed at the bottom of the first protective ring (403).

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