A pressure adaptive regulating ball valve

Abstract

This utility model relates to the field of ball valve technology, specifically: a pressure adaptive regulating ball valve, comprising a valve body, characterized in that sealing seats are provided on both sides of the interior of the valve body, and sealing rings are fixedly connected to the outside of the sealing seats. The valve body also provides an adaptive regulating component for adjusting the sealing seats, the adaptive regulating component including sliding grooves on both sides of the interior of the valve body and a miniature air pump fixedly connected to the outside of the valve body. In this utility model, the adaptive regulating component, through the cooperation of the miniature air pump, air pipe, and slip ring, can drive the sealing seats to move along the sliding grooves according to changes in fluid pressure. When the fluid pressure increases, the sealing pressure is enhanced to prevent leakage; when the pressure decreases, the pressure is reduced to prevent wear. No manual adjustment is required, solving the defect of poor adaptability of traditional fixed sealing seats.

Description

Technical Field

[0001] This utility model relates to the field of ball valve technology, and in particular to a pressure adaptive regulating ball valve for complex fluid conditions. Background Technology

[0002] Ball valves, as a commonly used fluid control valve, are widely used in industries such as petrochemicals, water treatment, energy, and pharmaceuticals due to their simple structure, rapid opening and closing, and low flow resistance. They play a core role in fluid on / off control and flow regulation. In actual industrial production, fluid conditions are often complex and variable. For example, fluid pressure in oil pipelines may rise and fall suddenly due to changes in transport distance and pump power, while fluid pressure in water treatment systems may fluctuate locally due to changes in impurity content. These complex conditions place extremely high demands on the sealing performance and adaptability of ball valves. If a ball valve fails to seal, it will not only cause fluid leakage, leading to resource waste and environmental pollution, but may even cause safety accidents due to the leakage of flammable and explosive fluids. Therefore, ball valves are key components for ensuring the stable and safe operation of fluid systems, and their performance directly affects the reliability of the entire production process.

[0003] In traditional ball valves, the sealing ring is usually fixedly connected to the sealing seat, and the position of the sealing seat cannot be adjusted. The contact pressure between the sealing ring and the valve core is a fixed value. When the fluid pressure increases, the fixed sealing pressure cannot withstand the impact of the high-pressure fluid, which can easily lead to the sealing ring and the valve core not fitting tightly, resulting in fluid leakage. Utility Model Content

[0004] To address the technical problem that the sealing ring of traditional ball valves is mostly fixedly connected to the sealing seat and the position of the sealing seat cannot be adjusted, this utility model provides a pressure adaptive regulating ball valve.

[0005] The technical solution adopted by this utility model is as follows: a pressure adaptive regulating ball valve, including a valve body, with sealing seats provided on both sides of the valve body, and sealing rings fixedly connected to the outside of the sealing seats. The valve body is also provided with an adaptive regulating component for adjusting the sealing seats. The adaptive regulating component includes sliding grooves provided on both sides of the valve body and a miniature air pump fixedly connected to the outside of the valve body. A slip ring is slidably connected in the sliding groove, and the slip ring is fixedly connected to the sealing seat. An air hole is provided on the outside of the sliding groove. An output pipe is fixedly connected to the output end of the miniature air pump. An output pipe is fixedly connected to the output end of the output pipe. A first air pipe and a second air pipe are fixedly connected to the output end of the output pipe. The first air pipe and the second air pipe are respectively fixedly connected to two air pipes.

[0006] In one embodiment, a controller is fixedly connected to the outside of the valve body, and pressure sensors are installed in both the valve body and the slide groove. The pressure sensors and the micro air pump are electrically coupled to the controller.

[0007] In one embodiment, the sealing ring consists of an elastic support adjustment layer, a pressure-sensitive deformation layer, a reinforced anti-corrosion layer, and an anti-erosion and wear-resistant layer from the inside out.

[0008] In one embodiment, the elastic support adjustment layer is made of a composite material of modified nitrile rubber and carbon fiber, and has a thickness of 3-5 mm.

[0009] In one embodiment, the pressure-sensitive deformation layer is made of a composite material of shape memory alloy powder and silicone rubber, and has a thickness of 2-3 mm.

[0010] In one embodiment, the reinforced anti-corrosion layer is made of a composite material of polytetrafluoroethylene propylene and glass fiber, and has a thickness of 1-2 mm.

[0011] In one embodiment, the erosion-resistant and wear-resistant layer is made of silicon carbide particle-reinforced copper alloy composite material and has a thickness of 0.5-1 mm.

[0012] The beneficial effects of this utility model are as follows: Compared with the prior art, in this utility model, the adaptive adjustment component can drive the sealing seat to move along the slide groove with the fluid pressure change through the cooperation of a micro air pump, air pipe and slip ring. When the fluid pressure increases, the sealing pressure is enhanced to prevent leakage, and when the pressure decreases, the pressure is reduced to avoid wear. No manual adjustment is required, which solves the defect of poor adaptability of traditional fixed sealing seats. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic diagram of the ball valve in this utility model; Figure 3 This is a cross-sectional structural diagram of the ball valve in this utility model; Figure 4 yes Figure 3 Enlarged structural diagram of region A in the middle; Figure 5 This is a schematic diagram of the layered structure of the sealing ring in this utility model.

[0014] The following are labeled in the diagram: 1. Valve body; 2. Miniature air pump; 3. Output pipe; 4. First air pipe; 5. Second air pipe; 6. Air hole; 7. Slide groove; 8. Slip ring; 9. Packing; 10. Sealing seat; 11. Sealing ring; 12. Elastic support adjustment layer; 13. Pressure-sensing deformation layer; 14. Reinforced anti-corrosion layer; 15. Erosion-resistant and wear-resistant layer. Detailed Implementation

[0015] In the description of this utility model, it should be noted that the terms "front", "up", "down", "left", "right", "vertical", "horizontal", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model 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. Therefore, they should not be construed as limitations on this utility model.

[0016] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0017] The following is in conjunction with the appendix Figure 1-5 The present invention will be further described below.

[0018] To address the problems existing in the background art, this application proposes the following technical solution: a pressure adaptive regulating ball valve, comprising a valve body 1, with sealing seats 10 provided on both sides of the interior of the valve body 1, and sealing rings 11 fixedly connected to the outside of the sealing seats 10. The valve body 1 also provides an adaptive regulating component for adjusting the sealing seats 10. The adaptive regulating component includes sliding grooves 7 provided on both sides of the interior of the valve body 1 and a miniature air pump 2 fixedly connected to the outside of the valve body 1. A slip ring 8 is slidably connected in the sliding groove 7, and a packing 9 is provided at the position corresponding to the slip ring 8 in the sliding groove 7 to increase the sealing performance. The slip ring 8 is fixedly connected to the sealing seat 10. An air hole 6 is provided on the outside of the sliding groove 7. An output pipe 3 is fixedly connected to the output end of the miniature air pump 2. A first air pipe 4 and a second air pipe 5 are fixedly connected to the output end of the output pipe 3. The first air pipe 4 and the second air pipe 5 are respectively fixedly connected to two air pipes.

[0019] The valve body 1, serving as the core load-bearing component and fluid transport channel of the ball valve, is made of high-strength, corrosion-resistant alloy material. This allows it to withstand long-term erosion under complex fluid conditions (such as fluids containing impurities, high viscosity, or corrosiveness), preventing leakage due to wear or corrosion and ensuring the safety and stability of fluid transport. The sealing seats 10 on both sides inside the valve body 1 are key components for achieving ball valve sealing. Their externally fixed sealing rings 11 are made of aging-resistant, highly elastic sealing materials (such as fluororubber), which tightly fit the valve core and the inner wall of the valve body 1, effectively blocking fluid leakage. Especially under high-pressure conditions, they maintain excellent sealing performance, solving the problem of traditional sealing structures easily failing due to pressure fluctuations.

[0020] The adaptive adjustment component is the core structure for coping with pressure changes in complex fluid conditions: the sliding grooves 7 on both sides inside the valve body 1 provide a stable sliding track for the slip ring 8. The slip ring 8 is fixedly connected to the sealing seat 10, allowing the sealing seat 10 to move flexibly along the sliding groove 7 with the slip ring 8, thereby adjusting the contact pressure between the sealing seat 10 and the valve core; the miniature air pump 2 outside the valve body 1 delivers or extracts gas into the sliding groove 7 through the first air pipe 4 and the second air pipe 5, using air pressure to drive the slip ring 8 to move the sealing seat 10. When the fluid pressure increases, the air pressure in the sliding groove 7 can be increased to push the sealing seat 10 closer to the valve core, enhancing the sealing pressure and preventing high-pressure fluid leakage; when the fluid pressure decreases, the air pressure can be reduced to allow the sealing seat 10 to reset appropriately, avoiding excessive sealing pressure that could cause valve core wear and extending the service life of the sealing component.

[0021] The air hole 6 ensures that the air pressure in the slide groove 7 can quickly respond to the adjustment of the micro air pump 2, realizing the real-time dynamic adjustment of the sealing seat 10. The first air pipe 4 and the second air pipe 5 are respectively connected to the two slide grooves 7, and the positions of the sealing seats 10 on both sides of the valve body 1 can be adjusted independently to adapt to the pressure difference that may occur on both sides of the valve body 1 under different working conditions, further improving the sealing reliability, avoiding local leakage caused by excessive pressure on one side, and allowing the ball valve to maintain stable sealing and control performance under complex and changing fluid working conditions.

[0022] In this embodiment, a controller is fixedly connected to the outside of the valve body 1, and pressure sensors are installed in both the valve body 1 and the slide groove 7. The pressure sensors and the micro air pump 2 are electrically coupled to the controller.

[0023] The controller outside the valve body 1 uses a programmable logic control module, which is the "central system" for the entire ball valve's adaptive pressure regulation. It can realize the automated linkage of pressure detection, data analysis, and execution control without manual intervention, greatly improving regulation efficiency and accuracy. The pressure sensor inside the valve body 1 can monitor the actual pressure changes of the fluid in real time and convert the pressure data into an electrical signal for transmission to the controller. The pressure sensor in the slide groove 7 provides real-time feedback on the air pressure status within the slide groove 7, providing data for the controller to adjust the micro air pump 2, forming a closed-loop control of "pressure monitoring, data feedback, air pressure regulation, and seal optimization".

[0024] When fluid conditions change (such as a sudden increase or decrease in pressure), the pressure sensor of valve body 1 immediately detects the pressure anomaly and transmits it to the controller. The controller quickly determines whether the position of the sealing seat 10 needs to be adjusted based on the preset pressure threshold and adjustment algorithm: if the fluid pressure is higher than the threshold, the controller instructs the micro air pump 2 to inflate the slide groove 7 through the air pipe, increasing the air pressure in the slide groove 7 to push the slip ring 8 and the sealing seat 10 closer to the valve core, thereby enhancing the sealing pressure; if the fluid pressure is lower than the threshold, the controller instructs the micro air pump 2 to extract some gas, reducing the air pressure in the slide groove 7, so that the sealing seat 10 can be properly reset under the balance of fluid pressure and air pressure in the slide groove 7, avoiding excessive wear of the seal.

[0025] The usage method of this embodiment is as follows: Before using this pressure adaptive regulating ball valve, check the condition of each component: ensure that the valve body 1 is undamaged, the sealing ring 11 is not aged or deformed, the micro air pump 2, the pressure sensor, and the controller are electrically coupled securely, and the first air pipe 4 and the second air pipe 5 are connected without looseness or leakage. Preset the normal threshold range of the fluid pressure using the controller (set according to actual working conditions) and calibrate the pressure sensor to ensure pressure detection accuracy.

[0026] After the ball valve is installed into the target fluid pipeline system, the power to the controller and the micro air pump 2 is turned on. The pressure sensor inside the valve body 1 begins to monitor the fluid pressure in the pipeline in real time, and the pressure sensor inside the slide groove 7 monitors the air pressure in the slide groove 7 and continuously transmits the data to the controller. When the fluid pressure is within the normal threshold range, the controller maintains the current air pressure in the slide groove 7, the sealing seat 10 maintains the initial sealing state, and the ball valve normally achieves fluid on / off control.

[0027] If changes in fluid conditions cause abnormal pressure: When the pressure sensor of valve body 1 detects that the fluid pressure is higher than the preset threshold, the controller immediately commands the micro air pump 2 to start, and inflate the corresponding slide groove 7 through the first air pipe 4 and the second air pipe 5. The increased air pressure in slide groove 7 pushes the slip ring 8 to move the sealing seat 10 towards the valve core, increasing the contact pressure between the sealing seat 10 and the valve core until the fluid pressure stabilizes within the threshold. The controller then commands the micro air pump 2 to stop inflating. When the fluid pressure is lower than the preset threshold, the controller commands the micro air pump 2 to extract some gas from the slide groove 7, reducing the air pressure in slide groove 7. The sealing seat 10 is appropriately reset under the action of fluid pressure, reducing the sealing pressure and avoiding excessive wear between the valve core and the sealing ring 11.

[0028] During use, data such as fluid pressure and chute 7 air pressure can be viewed in real time through the controller panel. If the pressure threshold needs to be adjusted, the parameters can be modified directly on the controller. When use is finished or the pipeline system is shut down, first turn off the fluid delivery, then turn off the power to the controller and the micro air pump 2. Regularly check the wear of the sealing ring 11, the sensitivity of the pressure sensor, and the air pipe sealing to ensure that the ball valve can still achieve normal pressure adaptive adjustment when used next.

[0029] Other possible embodiments include: The sealing ring 11 consists of an elastic support adjustment layer 12, a pressure-sensitive deformation layer 13, a reinforced anti-corrosion layer 14, and an anti-erosion and wear-resistant layer 15 from the inside out.

[0030] The above technical solution is explained as follows: Material selection for the elastic support adjustment layer: A composite material of modified nitrile rubber (NBR) and carbon fiber (CF) is selected. Nitrile rubber has excellent elasticity, oil resistance, and abrasion resistance. Modification (such as introducing functional groups like carboxyl and hydroxyl groups) can further improve its high-temperature resistance and corrosion resistance. Carbon fiber has high strength, high modulus, and low density. Adding it as a reinforcing phase to nitrile rubber can significantly improve the strength, rigidity, and deformation resistance of the elastic support adjustment layer without affecting its elastic recovery performance.

[0031] Thickness setting: The thickness of this layer is set to 3-5mm.

[0032] In the existing technology, the production method for this layer is briefly as follows: a mixing-molding process is used. The specific steps are as follows: Mixing: Modified nitrile rubber raw material, carbon fiber (0.5-1mm in length), vulcanizing agent (such as sulfur, peroxide), accelerator (such as tetramethylthiuram disulfide), antioxidant (such as N-isopropyl-N'-phenyl-p-phenylenediamine), and other raw materials are added to an internal mixer according to a certain formula ratio for mixing. The mixing temperature is controlled at 80-100℃, and the mixing time is 15-20 minutes to ensure that the raw materials are evenly dispersed and form a homogeneous rubber compound.

[0033] Preforming: The mixed rubber compound is placed into a preforming mold and pre-pressed under a pressure of 10-15MPa and a temperature of 50-60℃ to obtain a preform blank of the elastic support adjustment layer. The preforming time is 5-10 minutes. The purpose is to remove air bubbles in the rubber compound and to preliminarily determine the shape and size of the blank.

[0034] Compression molding: The preformed blank is placed into the final molding die and subjected to compression molding and vulcanization at a pressure of 20-30 MPa and a temperature of 150-170℃. The vulcanization time is determined according to the thickness, usually 15-25 minutes, to ensure complete vulcanization of the rubber compound and form an elastic support and adjustment layer with excellent elasticity and strength. During the compression molding process, uniformly distributed micro-bumps (0.2-0.3 mm in diameter and 0.1-0.2 mm in height) are formed on the outer surface of the elastic support and adjustment layer by the mold. These micro-bumps will serve as the basic structure for connection with the pressure-sensitive deformation layer.

[0035] Material selection for the pressure-sensitive deformation layer: A composite material of shape memory alloy (SMA) powder and silicone rubber (SR) is selected. Shape memory alloys (such as Ni-Ti alloys) have a unique shape memory effect and superelasticity, capable of generating large deformations under changes in temperature and pressure, and returning to their original shape when external conditions recover. Silicone rubber has excellent high-temperature resistance, corrosion resistance, and elasticity. Adding shape memory alloy powder as a functional phase to silicone rubber allows the pressure-sensitive deformation layer to generate corresponding deformations under pressure changes, achieving adaptive pressure regulation. At the same time, the elasticity of silicone rubber can enhance the deformation recovery capability of the shape memory alloy.

[0036] Thickness setting: The thickness of this layer is set to 2-3mm.

[0037] In existing technology, the production method for this layer is briefly as follows: a solution blending-coating molding process is used, combined with laser micromachining technology. The specific steps are as follows: Solution preparation: Dissolve raw silicone rubber (such as methyl vinyl silicone rubber) in an organic solvent (such as toluene or xylene) to form a silicone rubber solution with a mass fraction of 20%-30%; then add shape memory alloy powder (particle size of 5-10 μm, Ni-Ti alloy content of 30%-40%) to the silicone rubber solution, along with a vulcanizing agent (such as bis-2,4-dichlorobenzoyl peroxide) and a dispersant (such as glyceryl tristearate). Stir in a high-speed stirrer (speed of 1000-1500 r / min) for 30-40 min to ensure that the shape memory alloy powder is uniformly dispersed in the silicone rubber solution to form a stable composite slurry.

[0038] Coating and Molding: The elastic support adjustment layer is fixed on the coating worktable, and the composite slurry is evenly coated onto the outer surface of the elastic support adjustment layer using a scraper. The coating thickness is controlled by the gap of the scraper to ensure that the thickness of the pressure-sensitive deformation layer is 2-3 mm after drying. After coating, it is placed in an oven for drying at 80-100℃ for 2-3 hours to remove organic solvents.

[0039] Vulcanization and Laser Micromachining: The dried blank is placed in a vulcanization mold and vulcanized at a pressure of 10-15 MPa and a temperature of 160-180℃ for 20-30 minutes to ensure complete vulcanization of the silicone rubber and form the initial structure of the pressure-sensitive deformation layer. After vulcanization, laser micromachining technology is used to process uniformly distributed microgrooves (0.3-0.4 mm in diameter and 0.1-0.2 mm in depth) on the outer surface of the pressure-sensitive deformation layer. These microgrooves match the micro-protrusions on the outer surface of the elastic support adjustment layer to form a mechanical interlocking structure. At the same time, a special high-temperature resistant adhesive (such as epoxy resin-based adhesive with added nano-alumina particles to improve bonding strength and high-temperature resistance) is coated inside the microgrooves to further enhance the reliability of the connection between the two layers.

[0040] Material selection for the reinforced anti-corrosion layer: A composite material of perfluoroethylene propylene (FEP) and glass fiber (GF) is selected. FEP possesses excellent corrosion resistance, high temperature resistance, and non-stick properties, making it an ideal anti-corrosion material. Glass fiber has high strength, high insulation, and corrosion resistance; adding it as a reinforcing phase to FEP can improve the strength, rigidity, and impact resistance of the reinforced anti-corrosion layer without affecting its anti-corrosion performance.

[0041] Thickness setting: The thickness of this layer is set to 1-2mm.

[0042] In the existing technology, the production method for this layer is briefly as follows: an extrusion molding-hot pressing composite process is used. The specific steps are as follows: Raw material preparation: Poly(fluoroethylene) propylene resin (particle size 20-30μm) and glass fiber (length 1-2mm, content 20%-30%) are mixed evenly according to a certain formula ratio to obtain composite raw material.

[0043] Extrusion molding: The composite raw material is added to the extruder. The screw temperature of the extruder is controlled at 260-290℃ and the die head temperature is controlled at 300-320℃. The composite raw material is extruded into a film-like semi-finished product with a thickness of 1-2mm through the extruder. The extrusion speed is 1-2m / min to ensure that the film has a uniform thickness and a smooth surface.

[0044] Hot-press lamination: The pressure-sensitive deformation layer is fixed on the lower mold base of the hot-pressing mold. A special fluororesin adhesive (such as a polyimide-based adhesive, which has good compatibility with polytetrafluoroethylene propylene) is coated on its outer surface (the side with micro-grooves). Then, an extruded polytetrafluoroethylene propylene-glass fiber composite film is placed over the outer surface of the pressure-sensitive deformation layer. The upper mold base is closed, and hot-pressing is performed at a pressure of 15-20 MPa and a temperature of 280-300℃ for 10-15 minutes. During the hot-pressing process, the polytetrafluoroethylene propylene-glass fiber composite film softens to a certain extent, fully bonding with the micro-grooves and adhesive on the outer surface of the pressure-sensitive deformation layer to form a strong connection. Simultaneously, spiral-shaped micro-channels (0.5-0.6 mm wide and 0.2-0.3 mm deep) are formed on the outer surface of the reinforced anti-corrosion layer by the mold. These micro-channels guide the flow of fluid media, reducing the scouring effect of the media on the sealing gasket surface.

[0045] Material selection for the erosion-resistant and wear-resistant layer: Silicon carbide (SiC) particle-reinforced metal matrix composites (such as silicon carbide particle-reinforced copper alloy, SiC / Cu) are selected. Silicon carbide has extremely high hardness, excellent wear resistance, and corrosion resistance; copper alloy has good thermal conductivity, electrical conductivity, and processing performance. Adding silicon carbide particles as a reinforcing phase to the copper alloy can significantly improve the hardness, wear resistance, and erosion resistance of the erosion-resistant layer. At the same time, the thermal conductivity of the copper alloy can effectively conduct away the heat generated during the sealing process, avoiding local overheating that could lead to gasket aging.

[0046] Thickness setting: The thickness of this layer is set to 0.5-1mm.

[0047] In the existing technology, the production method for this layer is briefly as follows: A powder metallurgy-plasma spraying process is used. The specific steps are as follows: Powder preparation: Silicon carbide powder (particle size 1-5μm, content 40%-50%) and copper alloy powder (such as brass powder, particle size 5-10μm) are mixed evenly according to a certain formula ratio. Then a small amount of binder (such as polyvinyl alcohol) is added, and the mixture is ball-milled in a ball mill for 1-2 hours to ensure that the two powders are evenly mixed to form a composite powder.

[0048] Preform preparation: The composite powder is placed in a mold and cold-pressed under a pressure of 50-60MPa to obtain a preform of the erosion-resistant and wear-resistant layer. The cold pressing time is 5-10min and the thickness of the preform is 1-2mm (leaving room for subsequent processing).

[0049] Degreasing and sintering: The preform is placed in a degreasing furnace and degreased at a temperature of 300-400℃ for 2-3 hours to remove the binder from the preform; then the degreased preform is placed in a sintering furnace and sintered at a temperature of 900-950℃ under the protection of an inert gas (such as argon) for 3-4 hours to melt the copper alloy powder in the composite powder and combine it with the silicon carbide powder to form a sintered body with a certain strength and hardness.

[0050] Plasma spraying: The reinforced anti-corrosion layer is fixed on the spraying worktable, and its outer surface is sandblasted to improve surface roughness and enhance the adhesion with the erosion-resistant and wear-resistant layer. Then, sintered silicon carbide-copper alloy composite powder is sprayed onto the outer surface of the reinforced anti-corrosion layer using plasma spraying equipment.

[0051] The connection between the elastic support adjustment layer and the pressure-sensitive deformation layer is as follows: During the molding process, uniformly distributed micro-bumps (0.2-0.3 mm in diameter and 0.1-0.2 mm in height) are formed on the outer surface of the elastic support adjustment layer. After vulcanization, the pressure-sensitive deformation layer undergoes laser micromachining technology to process micro-grooves (0.3-0.4 mm in diameter and 0.1-0.2 mm in depth) on its inner surface in contact with the elastic support adjustment layer, matching the micro-bumps. During the lamination process, the micro-bumps of the elastic support adjustment layer are embedded in the micro-grooves of the pressure-sensitive deformation layer, forming a mechanical interlocking structure. This structure effectively transmits shear and tensile forces between the layers, improving the interlayer bonding strength. Simultaneously, a special high-temperature resistant adhesive (epoxy resin-based adhesive with added nano-alumina particles) is coated within the micro-grooves. During curing, the adhesive chemically reacts with the modified nitrile rubber of the elastic support adjustment layer and the silicone rubber of the pressure-sensitive deformation layer, forming a strong chemical bond and further enhancing the reliability of the connection between the two layers.

[0052] The connection between the pressure-sensitive deformation layer and the reinforced anti-corrosion layer is as follows: The outer surface of the pressure-sensitive deformation layer (the side in contact with the reinforced anti-corrosion layer) is laser-micromachined to form a microgroove structure. During the lamination process, a special fluoropolymer adhesive (polyimide-based adhesive) is first coated on the outer surface of the pressure-sensitive deformation layer. This adhesive has good compatibility with the silicone rubber of the pressure-sensitive deformation layer and the polytetrafluoroethylene propylene (PTFE) of the reinforced anti-corrosion layer, forming a strong chemical bond between them. Then, an extruded PTFE-glass fiber composite film is applied to the outer surface of the pressure-sensitive deformation layer using a hot-pressing process. During the hot-pressing process (temperature 280-300℃, pressure 15-20MPa), the PTFE-glass fiber composite film softens to a certain extent, and its molecular chains diffuse and entangle with the adhesive molecular chains, forming a physical bond. At the same time, the presence of glass fibers increases the roughness of the composite film, forming a mechanical interlock with the microgrooves of the pressure-sensitive deformation layer, further improving the interlayer bonding strength. In addition, the special fluoropolymer adhesive cures at high temperatures, forming a high-strength adhesive layer that ensures a strong bond between the pressure-sensitive deformation layer and the reinforced anti-corrosion layer.

[0053] The connection between the reinforced anti-corrosion layer and the erosion-resistant and wear-resistant layer is as follows: First, the outer surface of the reinforced anti-corrosion layer is sandblasted to further improve the surface roughness, remove the oxide layer and impurities on the surface, and enhance the adhesion with the coating. Then, it is fixed by adhesive bonding to fix the reinforced anti-corrosion layer and the erosion-resistant and wear-resistant layer together.

[0054] All standard parts used in this utility model can be purchased from the market, and irregular parts can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art. In addition, the circuit connection adopts conventional connection methods in the prior art, which will not be described in detail here. The contents not described in detail in this specification belong to the prior art known to those skilled in the art.

[0055] Although embodiments of the present invention have been shown and described, the scope of the present invention will be defined by the appended claims and their equivalents for those skilled in the art.

Claims

1. A pressure adaptive regulating ball valve, comprising a valve body (1), characterized in that, The valve body (1) is provided with sealing seats (10) on both sides inside. A sealing ring (11) is fixedly connected to the outside of the sealing seat (10). The valve body (1) is also provided with an adaptive adjustment component for adjusting the sealing seat (10). The adaptive adjustment component includes a sliding groove (7) provided on both sides inside the valve body (1) and a micro air pump (2) fixedly connected to the outside of the valve body (1). A slip ring (8) is slidably connected in the sliding groove (7). The slip ring (8) is fixedly connected to the sealing seat (10). An air hole (6) is provided on the outside of the sliding groove (7). An output pipe (3) is fixedly connected to the output end of the micro air pump (2). A first air pipe (4) and a second air pipe (5) are fixedly connected to the output end of the output pipe. The first air pipe (4) and the second air pipe (5) are fixedly connected to the two air pipes respectively.

2. The pressure adaptive regulating ball valve according to claim 1, characterized in that, The valve body (1) is externally fixedly connected to a controller. Pressure sensors are installed in both the valve body (1) and the slide groove (7). The pressure sensors and the micro air pump (2) are electrically coupled to the controller.

3. The pressure adaptive regulating ball valve according to claim 1, characterized in that, The sealing ring (11) consists of an elastic support adjustment layer (12), a pressure-sensitive deformation layer (13), a reinforced anti-corrosion layer (14), and an anti-erosion and wear-resistant layer (15) from the inside out.

4. The pressure adaptive regulating ball valve according to claim 3, characterized in that, The elastic support adjustment layer (12) is made of a composite material of modified nitrile rubber and carbon fiber, and has a thickness of 3-5 mm.

5. A pressure adaptive regulating ball valve according to claim 4, characterized in that, The pressure-sensitive deformation layer (13) is made of a composite material of shape memory alloy powder and silicone rubber, and has a thickness of 2-3 mm.

6. A pressure adaptive regulating ball valve according to claim 5, characterized in that, The reinforced anti-corrosion layer (14) is made of a composite material of poly(fluoroethylene propylene) and glass fiber, and has a thickness of 1-2 mm.

7. A pressure adaptive regulating ball valve according to claim 6, characterized in that, The erosion-resistant and wear-resistant layer (15) is made of silicon carbide particle-reinforced copper alloy composite material and has a thickness of 0.5-1mm.

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