Stop valve self-adaptive to flow proportion

Abstract

The invention relates to the technical field of valves, and discloses a self-adaptive flow proportion stop valve which comprises a valve body, a valve rod, a valve rod, a valve rod and a valve rod. The liquid inlet pipe is used for introducing fluid into the stop valve, and the liquid inlet pipe is fixedly connected to the left side of the valve body; and the liquid outlet pipe is used for discharging the fluid from the stop valve. According to the stop valve self-adaptive to the flow proportion, the cutting mechanism is arranged, when liquid passes through the impeller, the impeller is driven to rotate clockwise, and the cutting column rotates reversely relative to the impeller, so that pressure fluctuation in the liquid flowing process can be effectively relieved, the water hammer effect or impact caused by sudden pressure change is reduced, and other assemblies in a system are protected; particularly, when the liquid flow is large or the flow speed is high, the rotating action of the cutting column rotating reversely relative to the impeller is beneficial to generating a resistance mechanism in the liquid flowing process, and the reverse power action can consume part of kinetic energy of the liquid, so that sudden pressure fluctuation possibly generated in the fluid is relieved.

Description

Technical Field

[0001] The invention relates to the technical field of valves, in particular to a stop valve with adaptive flow ratio. Background Art

[0002] The stop valve is a valve that relies on the pressure of the valve stem to block the flow channel through the valve plug. It is a forced sealing valve. When the stop valve is closed, the valve stem needs to apply external force to press the valve plug against the valve seat to achieve the sealing function. Its opening and closing parts usually adopt a conical or flat structure to improve the sealing performance and wear resistance. The stop valve is suitable for cutting off or regulating the flow of fluids and is often used in pipeline systems with high pressure, high temperature or corrosive media.

[0003] Oil or oil-containing fluids are dense and compressible, which allows them to temporarily store energy when they are under pressure and transfer energy by expansion when the pressure is released. This characteristic causes the fluid to transfer energy through compression and expansion when there is a sudden change in pressure in the pipeline system, which intensifies the pressure fluctuation and forms a shock wave. The pressure gradient is the main reason for driving the fluid flow. When the pressure suddenly increases somewhere in the pipeline system, an additional driving force is generated, which pushes the fluid to flow faster. Conversely, when the pressure drops suddenly, the fluid may produce reverse flow or slow down due to inertia. This pressure change directly affects the flow rate of the fluid and causes drastic dynamic changes under certain conditions. For example, when a stop valve is quickly closed in a pipeline, the fluid flow rate will change suddenly. Due to the rapid change in momentum of the fluid, a large inertial force is generated, causing the pressure in the pipeline to increase rapidly. The compressibility of petroleum-based fluids further amplifies this pressure change, causing the pressure wave to propagate along the pipeline in a stronger form and may be superimposed with the reflected pressure wave to form a water hammer effect. The pressure wave in the water hammer effect will propagate through the compressibility of the liquid, and the impact energy it carries will directly act on the pipe wall and valve, causing the equipment to bear additional stress. This impact will cause valve seal failure, pipeline vibration fatigue and even local structural damage, posing a threat to the safe operation of the pipeline system. Through the above analysis, it can be made clear that the density and compressibility characteristics of oil or oil-containing fluids amplify the impact of pressure fluctuations, rapid flow rate changes are the key to the formation of the water hammer effect, and the propagation and superposition of pressure waves are the root causes of the impact on pipelines and valves. Summary of the invention

[0004] Technical issues solved In view of the deficiencies in the prior art, the present invention provides a stop valve with an adaptive flow ratio, which solves the problem that petroleum or oil-containing fluids are prone to water hammer effect when the pressure suddenly changes due to their high density and compressibility, causing impact damage to pipelines and valves.

[0005] (II) Technical solution To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a stop valve with adaptive flow ratio, comprising: a valve body, used to carry and fix the various components of the stop valve; a liquid inlet pipe, used to introduce fluid into the stop valve, the liquid inlet pipe is fixedly connected to the left side of the valve body; a liquid outlet pipe, used to discharge fluid from the stop valve, the liquid outlet pipe is fixedly connected to the right side of the valve body; an adaptive flow ratio mechanism, the adaptive flow ratio mechanism is arranged on the liquid outlet pipe and the valve body, and is used to adjust the excessive pressure in the liquid outlet pipe; an energy absorption mechanism, the energy absorption mechanism is arranged on the inner wall of the liquid inlet pipe, and is used to alleviate and absorb the water hammer effect; a power storage mechanism, which is used to store energy by power storage; a cutting mechanism, which is used to cut and buffer the liquid flow under normal circumstances, and when encountering water hammer, it rotates in the opposite direction to alleviate pressure fluctuations and reduce impact; a buffer mechanism, which is used to absorb and mitigate the impact force in the fluid flow.

[0006] Preferably, the adaptive flow proportional mechanism includes a spring 1, one end of which is fixedly connected to the inner wall of the liquid outlet pipe, the other end of which is fixedly connected to a disc block 1, the outer wall of the disc block 1 is fixedly connected to one end of a connecting transmission rod, the other end of the connecting transmission rod is fixedly connected to a blocking square disc, and a hollow connecting block is fixedly connected to the inner wall of the valve body.

[0007] Preferably, the outer wall of the disc block 1 is connected to the inner wall piston of the liquid outlet pipe, the inner wall of the hollow connection block is connected to the blocking square disc piston, the outer wall of the connecting transmission rod is slidably connected to the inner wall of the liquid outlet pipe, and the inner wall of the hollow connection block is slidably connected to the inner wall of the liquid outlet pipe.

[0008] Preferably, the energy absorbing mechanism comprises a disc block 2, the piston of the disc block 2 is connected to the inner wall of the liquid inlet pipe, the outer wall of the disc block 2 is fixedly connected to one end of a sealed telescopic tube, the other end of the sealed telescopic tube is fixedly connected to a positioning block, the inner wall of the sealed telescopic tube is fixedly connected to one end of a spring 2, the other end of the spring 2 is fixedly connected to the positioning block, a through hole groove is provided on the inner wall of the positioning block, a connecting plate is fixedly connected to the inner wall of the positioning block, one end of a spring 3 is fixedly connected to the outer wall of the connecting plate, the other end of the spring 3 is fixedly connected to a sealing plate, the outer wall of the sealing plate is fixedly connected to one end of a telescopic rod 1, and the other end of the telescopic rod 1 is fixedly connected to the outer wall of the connecting plate.

[0009] Preferably, the outer wall of the positioning block is fixedly connected to the inner wall of the liquid inlet pipe, and the inner wall of the sealing plate is provided with tiny through holes.

[0010] Preferably, the force storage mechanism includes a telescopic rod 2, one end of which is rotatably connected to the inner wall of the disc block 2, the other end of which is fixedly connected to the central connecting shaft, the outer wall of the liquid inlet pipe is fixedly connected to an annular part, the inner wall of the annular part is fixedly connected to one end of a volute spring, the other end of the volute spring is fixedly connected to the outer wall of the central connecting shaft, the outer wall of the telescopic rod 2 is fixedly connected to one end of a spring 4, driving the other end of the spring 4 to be fixedly connected to a trapezoidal block, the inner wall of the liquid inlet pipe is fixedly connected to a fixing ring part, and the inner wall of the fixing ring part is fixedly connected to a positioning trapezoidal part.

[0011] Preferably, the outer wall of the trapezoidal block is slidably connected to the inner wall of the second telescopic rod, and a plurality of positioning trapezoidal members are provided, and the positioning trapezoidal members are arranged in a circular array.

[0012] Preferably, the cutting mechanism comprises a telescopic rod three, one end of the telescopic rod three is fixedly connected to the outer wall of the telescopic rod two, the other end of the telescopic rod three is fixedly connected to a right cylindrical block, the outer wall of the right cylindrical block is fixedly connected to a cutting column, the outer wall of the right cylindrical block is fixedly connected to a right gear ring, an intermediate bevel gear is rotatably connected to the inner wall of the liquid inlet pipe, the intermediate bevel gear is meshed with the right gear ring, a left connecting shaft is rotatably connected to the inner wall of the liquid inlet pipe, the outer wall of the left connecting shaft is fixedly connected to a left cylindrical block, the outer wall of the left cylindrical block is fixedly connected to an impeller, the outer wall of the left cylindrical block is fixedly connected to a left gear ring, and the outer wall of the left gear ring is meshed with the intermediate bevel gear.

[0013] Preferably, the buffer mechanism includes a fixed positioning piece, the fixed positioning piece is fixedly connected to the inner wall of the liquid inlet pipe, the outer wall of the fixed positioning piece is fixedly connected to one end of a spring five, the other end of the spring five is fixedly connected to a disc block three, the outer wall of the disc block three is fixedly connected to one end of a telescopic rod four, the other end of the telescopic rod four is fixedly connected to the outer wall of the fixed positioning piece, the outer wall of the disc block three is fixedly connected to one end of a connecting rod, the other end of the connecting rod is fixedly connected to a cylindrical trigger block, and a hollow cylindrical block is fixedly connected to the inner wall of the liquid inlet pipe.

[0014] (III) Beneficial effects Compared with the prior art, the present invention provides a stop valve with adaptive flow ratio, which has the following beneficial effects: 1. This adaptive flow ratio stop valve is set up with a cutting mechanism. When the liquid passes through the impeller, it drives the impeller to rotate clockwise. The cutting column rotates inversely relative to the impeller, which can effectively alleviate the pressure fluctuations in the liquid flow, reduce the water hammer effect or impact caused by sudden pressure changes, and protect other components in the system, especially when the liquid flow is large or the flow rate is fast. The reverse rotation of the cutting column relative to the impeller helps to produce a "resistance" mechanism in the liquid flow. This reverse dynamic action will consume part of the kinetic energy of the liquid, thereby alleviating the sudden pressure fluctuations that may occur in the fluid.

[0015] 2. The adaptive flow ratio stop valve is set up with an adaptive flow ratio mechanism. When the liquid pressure output from the valve body to the outlet pipe is too high, the high-pressure oil in the outlet pipe forms pressure on the disc block 1, so that the disc block 1 compresses the spring 1, so that the disc block 1 drives the connecting transmission rod, and the connecting transmission rod drives the blocking square disc to move to the left, so that the left side of the valve body is blocked, thereby reducing the liquid entering the valve body, thereby avoiding excessive flow, and playing a role in adaptive flow control. By reducing the flow, it can effectively prevent instability caused by excessive pressure in the system, and avoid pressure fluctuations caused by excessive flow. This adjustment mechanism can reduce the impact of excessive flow or pressure on the valve body and the entire pipeline system, avoid water hammer effect or other potential damage, and ensure the safe operation of the system.

[0016] 3. The adaptive flow proportional stop valve is set up with an energy absorption mechanism. The instantaneous high impact force is partially absorbed and dispersed to prevent it from being directly transmitted to other components of the pipeline system, avoiding equipment damage caused by instantaneous high pressure. The air in the sealed telescopic tube is discharged by squeezing and pushing the sealing plate open, but when the spring tries to return to its original state, the air can only enter slowly through the tiny through-holes. This design increases the resistance of the spring to release the compression energy, delays the elongation process of the sealed telescopic tube, and prevents the absorbed impact force from being released quickly, avoiding the generation of secondary shock waves. The water hammer effect usually accumulates pressure due to repeated reflections of shock waves, leading to greater system damage. This structure breaks the cumulative effect of the water hammer impact force through buffering and staged release, reducing the harm of water hammer to the system from the source.

[0017] 4. The stop valve with adaptive flow ratio is set by a buffer mechanism. When the water hammer effect of the liquid comes, the liquid impacts the disc block three, so that the disc block three squeezes the spring five, so that it plays a buffering role. At the same time, the disc block three drives the connecting rod, and the connecting rod drives the cylindrical trigger block to be pushed quickly. When the cylindrical trigger block moves quickly and impacts the full non-Newtonian fluid placed in the hollow cylindrical block, it can drive the hollow cylindrical block to move. At this time, the hollow cylindrical block drives the disc block two to move to the right, and the disc block two drives one end of the telescopic rod two to move The second telescopic rod drives the trapezoidal block to move to the right. At this time, the positioning trapezoidal piece no longer limits the trapezoidal block, so that the trapezoidal block can rotate clockwise. At this time, the volute spring is released to drive the second telescopic rod to rotate. The second telescopic rod drives the third telescopic rod to rotate. The third telescopic rod drives the cutting column to rotate clockwise. The cutting column drives the left cylindrical block to rotate counterclockwise through the middle bevel gear. The left cylindrical block drives the impeller to rotate counterclockwise. When the impeller rotates counterclockwise, it drives the liquid to move away from the second telescopic rod, and the water hammer is offset, thereby further effectively reducing the impact of the water hammer effect. The water hammer effect generated when the valve body adjusts the flow rate adaptively is further avoided. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the overall structure of a stop valve with adaptive flow ratio proposed by the present invention; Figure 2 It is a structural schematic diagram of an adaptive flow ratio mechanism of a stop valve with adaptive flow ratio proposed by the present invention; Figure 3 A schematic diagram of the cross-sectional structure of a liquid inlet pipe of a stop valve with an adaptive flow ratio proposed by the present invention; Figure 4 This is a schematic structural diagram of a sealing expansion pipe of a stop valve with adaptive flow ratio proposed by the present invention; Figure 5 A schematic cross-sectional structure diagram of a sealing expansion pipe of a stop valve with adaptive flow ratio proposed by the present invention; Figure 6 This is a schematic diagram of the structure of a small through hole of a stop valve with adaptive flow ratio proposed by the present invention; Figure 7 This is a structural schematic diagram of a stop valve force storage mechanism with adaptive flow ratio proposed by the present invention; Figure 8 This is a schematic structural diagram of a stop valve fixing ring with adaptive flow ratio proposed by the present invention; Fig. 9 This is a structural schematic diagram of a trapezoidal block of a stop valve with adaptive flow ratio proposed by the present invention; Fig.10 It is a structural schematic diagram of a telescopic rod 3 of a stop valve with adaptive flow ratio proposed by the present invention; Fig.11 A schematic diagram of the structure of a cut-off valve with adaptive flow ratio proposed by the present invention; Fig.12 This is a structural schematic diagram of a stop valve buffer mechanism with adaptive flow ratio proposed by the present invention; Fig.13 The cross-sectional structure diagram of a hollow cylindrical block of a stop valve with adaptive flow ratio proposed by the present invention.

[0019] In the figure: 1, valve body; 2, liquid inlet pipe; 3, liquid outlet pipe; 4, adaptive flow ratio mechanism; 41, spring 1; 42, disc block 1; 43, connecting transmission rod; 44, blocking square disc; 45, hollow connecting block; 5, energy absorption mechanism; 51, disc block 2; 52, sealing telescopic tube; 53, positioning block; 54, spring 2; 55, through hole groove; 56, connecting plate; 57, spring 3; 58, sealing plate; 59, telescopic rod 1; 510, tiny through hole; 6, power storage mechanism; 61, telescopic rod 2; 62, ring member; 63, vortex Coil spring; 64, center connecting shaft; 65, spring four; 66, trapezoidal block; 67, fixed ring; 68, positioning trapezoidal member; 7, cutting mechanism; 71, telescopic rod three; 72, right cylindrical block; 73, cutting column; 74, right ring gear; 75, intermediate bevel gear; 76, left connecting shaft; 77, left cylindrical block; 78, impeller; 79, left ring gear; 8, buffer mechanism; 81, fixed positioning member; 82, spring five; 83, disc block three; 84, telescopic rod four; 85, connecting rod; 86, hollow cylindrical block; 87, cylindrical trigger block. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0021] See also Figure 1-Figure 13, a stop valve with adaptive flow ratio, comprising: a valve body 1, used to carry and fix various components of the stop valve, and provide a basic structure for fluid channel and flow control, the valve body 1 is an electric valve body 1, which can adaptively adjust the flow ratio, automatically adjust the fluid flow rate according to system requirements, so as to achieve precise flow control, the flow control of the oil pipeline by the valve body 1 will cause a water hammer effect, mainly because the electric valve body 1 may produce a sudden change in flow velocity when adjusting the flow, when the valve body 1 is quickly switched or the flow is adjusted too quickly, the momentum of the fluid changes drastically, resulting in the formation of pressure waves, petroleum fluids have a large density and a certain compressibility, the fluid will accelerate or decelerate rapidly when the pressure suddenly changes, causing pressure waves to propagate in the pipeline, when these pressure waves encounter the resistance of the pipeline or the control of the valve, they may be reflected and superimposed, forming a water hammer effect, causing impact and damage to the pipeline and the valve, the electric valve body 1 is an existing technology, so it is not repeated; a liquid inlet pipe 2, used to introduce the fluid into the stop valve, the liquid inlet pipe 2 is fixedly connected to the left side of the valve body 1; a liquid outlet pipe 3, used to discharge the fluid from the stop valve, the liquid outlet pipe 3 is fixedly connected to the adaptive flow ratio mechanism 4 on the right side of the valve body 1, the adaptive flow ratio mechanism 4 is arranged on the liquid outlet pipe 3 and the valve body 1, and is used to adjust the excessive pressure in the liquid outlet pipe 3; energy absorption mechanism 5, the energy absorption mechanism 5 is arranged on the inner wall of the liquid inlet pipe 2, and is used to alleviate and absorb the water hammer effect, and reduce the damage to the valve body 1 and the pipeline system caused by the shock wave caused by the sudden change of fluid pressure; the power storage mechanism 6 is used to store energy through power storage so that it can be released when needed, help to smoothly control the fluid flow, alleviate the water hammer effect, and ensure the stability and reliability of the valve operation; the cutting mechanism 7 is used to cut and buffer the liquid flow under normal circumstances to stabilize the fluid flow, and when encountering water hammer, it rotates in the opposite direction to alleviate the pressure fluctuation and reduce the impact, so as to avoid the damage of the water hammer effect to the pipeline and valve; the buffer mechanism 8 is used to absorb and mitigate the impact force in the fluid flow, especially when encountering the water hammer effect, by triggering the power storage mechanism 6 to release energy, relieve the pressure fluctuation, thereby further reducing the damage to the pipeline and valve.

[0022] The adaptive flow ratio mechanism 4 includes a spring 41, one end of which is fixedly connected to the inner wall of the liquid outlet pipe 3, the other end of which is fixedly connected to a disc block 42, the outer wall of which is fixedly connected to one end of a connecting transmission rod 43, the other end of which is fixedly connected to a blocking square disc 44, and a hollow connecting block 45 is fixedly connected to the inner wall of the valve body 1. When the pressure of the liquid output from the valve body 1 to the liquid outlet pipe 3 is too high, the high-pressure oil in the liquid outlet pipe 3 forms pressure on the disc block 42, so that the disc block 42 compresses the spring 41, so that the disc block 42 drives the connecting transmission rod 43, and the connecting transmission rod 43 drives the blocking square disc 44 to move to the left, so that the left side of the valve body 1 is blocked, thereby reducing the liquid entering the valve body 1, thereby avoiding excessive flow, and playing the role of adaptive flow control. By reducing the flow, it can effectively prevent the instability caused by excessive pressure in the system and avoid pressure fluctuations caused by excessive flow. This regulating mechanism The control can reduce the impact of excessive flow or pressure on the valve body 1 and the entire pipeline system, avoid water hammer effect or other potential damage, and ensure the safe operation of the system. The outer wall of the disc block 42 is connected to the inner wall piston of the liquid outlet pipe 3 to avoid liquid leakage and ensure that the fluid only flows along the predetermined channel. The inner wall of the hollow connecting block 45 is connected to the piston of the blocking square disc 44. The blocking square disc 44 slides left and right to block and open the through groove of the hollow connecting block 45. The outer wall of the connecting transmission rod 43 is slidably connected to the inner wall of the liquid outlet pipe 3, and the inner wall of the hollow connecting block 45 is slidably connected to the inner wall of the liquid outlet pipe 3.

[0023] The energy absorbing mechanism 5 comprises a disc block 2 51, the piston of the disc block 2 51 is connected to the inner wall of the liquid inlet pipe 2, the outer wall of the disc block 2 51 is fixedly connected to one end of a sealed telescopic tube 52, the other end of the sealed telescopic tube 52 is fixedly connected to a positioning block 53, the inner wall of the sealed telescopic tube 52 is fixedly connected to one end of a spring 2 54, the other end of the spring 2 54 is fixedly connected to the positioning block 53, a through hole groove 55 is provided on the inner wall of the positioning block 53, a connecting plate 56 is fixedly connected to the inner wall of the positioning block 53, the outer wall of the connecting plate 56 is fixedly connected to one end of a spring 3 57, the other end of the spring 3 57 is fixedly connected to a sealing plate 58, the outer wall of the sealing plate 58 is fixedly connected to one end of a telescopic rod 1 59, the other end of the telescopic rod 1 59 is fixedly connected to the outer wall of the connecting plate 56, the outer wall of the positioning block 53 is fixedly connected to the inner wall of the liquid inlet pipe 2, and a tiny through hole 510 is provided on the inner wall of the sealing plate 58.

[0024] The force storage mechanism 6 includes a telescopic rod 61, one end of which is rotatably connected to the inner wall of the disc block 51, and the other end of the telescopic rod 61 is fixedly connected to a central connecting shaft 64. The outer wall of the liquid inlet pipe 2 is fixedly connected to a ring member 62, and the inner wall of the ring member 62 is fixedly connected to one end of a spiral spring 63, and the other end of the spiral spring 63 is fixedly connected to the outer wall of the central connecting shaft 64. The outer wall of the telescopic rod 61 is fixedly connected to one end of a spring 65, which drives the other end of the spring 65 to be fixedly connected to a trapezoidal block 66. A fixed ring member 67 is fixedly connected to the inner wall of the liquid inlet pipe 2, and a positioning trapezoidal member 68 is fixedly connected to the inner wall of the fixed ring member 67. The outer wall of the trapezoidal block 66 is slidably connected to the inner wall of the telescopic rod 61, and a plurality of positioning trapezoidal members 68 are provided, and the positioning trapezoidal members 68 are arranged in a circular array.

[0025] The cutting mechanism 7 includes a telescopic rod three 71, one end of the telescopic rod three 71 is fixedly connected to the outer wall of the telescopic rod two 61, the other end of the telescopic rod three 71 is fixedly connected to a right cylindrical block 72, the outer wall of the right cylindrical block 72 is fixedly connected to a cutting column 73, the outer wall of the right cylindrical block 72 is fixedly connected to a right ring gear 74, an intermediate bevel gear 75 is rotatably connected to the inner wall of the liquid inlet pipe 2, the intermediate bevel gear 75 is meshed with the right ring gear 74, a left connecting shaft 76 is rotatably connected to the inner wall of the liquid inlet pipe 2, the outer wall of the left connecting shaft 76 is fixedly connected to a left cylindrical block 77, the outer wall of the left cylindrical block 77 is fixedly connected to an impeller 78, the outer wall of the left cylindrical block 77 is fixedly connected to a left ring gear 79, and the outer wall of the left ring gear 79 is meshed with the intermediate bevel gear 75. When the liquid passes through the impeller 78, it drives the impeller 78 to rotate clockwise. The impeller 78 drives the right gear ring 74 to rotate counterclockwise through the intermediate bevel gear 75. The right gear ring 74 drives the right cylindrical block 72 to rotate counterclockwise. The right cylindrical block 72 drives the cutting column 73 to rotate counterclockwise. The cutting column 73 rotates in reverse relative to the impeller 78, which can effectively alleviate the pressure fluctuations in the liquid flow, reduce the water hammer effect or impact caused by the sudden change of pressure, and protect other components in the system, especially when the liquid flow rate is large or the flow rate is fast. The reverse rotation of the cutting column 73 relative to the impeller 78 helps to produce a "resistance" mechanism in the liquid flow. Specifically, when the liquid flow rate is high, or when a sudden pressure change occurs during the flow process, the reverse rotating cutting column 73 can exert a certain resistance or regulating effect on the fluid. This reverse dynamic action will consume a part of the kinetic energy of the liquid, thereby alleviating the sudden pressure fluctuations that may occur in the fluid. At this time, the telescopic rod three 71 drives the telescopic rod two 61 to rotate, so that when the telescopic rod two 61 rotates counterclockwise, it drives the trapezoidal block 66 to rotate, and the inclined surface of the trapezoidal block 66 contacts the inclined surface of the positioning trapezoidal member 68. At this time, the trapezoidal block 66 is squeezed by the positioning trapezoidal member 68, so that the trapezoidal block 66 repeatedly squeezes the spring four 65 downward. At this time, the rotation of the telescopic rod two 61 drives the central connecting shaft 64 to rotate, and the central connecting shaft 64 drives the volute spring 63 to store force. When the telescopic rod two 61 rotates clockwise, it drives the trapezoidal block 66 to rotate clockwise. The straight surface of the trapezoidal block 66 contacts the straight surface of the positioning trapezoidal member 68, so that the trapezoidal block 66 cannot rotate clockwise, so that the telescopic rod two 61 can only rotate counterclockwise at this time to drive the volute spring 63 to store force.

[0026] The buffer mechanism 8 includes a fixed positioning member 81, which is fixedly connected to the inner wall of the liquid inlet pipe 2, and the outer wall of the fixed positioning member 81 is fixedly connected to one end of a spring five 82, and the other end of the spring five 82 is fixedly connected to a disc block three 83, and the outer wall of the disc block three 83 is fixedly connected to one end of a telescopic rod four 84, and the other end of the telescopic rod four 84 is fixedly connected to the outer wall of the fixed positioning member 81, and the outer wall of the disc block three 83 is fixedly connected to one end of a connecting rod member 85, and the other end of the connecting rod member 85 is fixedly connected to a cylindrical trigger block 87, and a hollow cylindrical block 86 is fixedly connected to the inner wall of the liquid inlet pipe 2. The hollow cylindrical block 86 is filled with non-Newtonian fluid, so that the disc block 3 83 is subjected to a small impact under normal circumstances, and the disc block 3 83 drives the connecting rod 85 and the cylindrical trigger block 87 to move relatively slowly; when the water hammer effect of the liquid comes, the liquid impacts the disc block 3 83, so that the disc block 3 83 squeezes the spring 5 82, so that it plays a buffering role, and at the same time the disc block 3 83 drives the connecting rod 85, and the connecting rod 85 drives the cylindrical trigger block 87 to be pushed quickly, and the cylindrical trigger block 87 moves quickly to impact the full non-Newtonian fluid placed in the hollow cylindrical block 86, so that the hollow cylindrical block 86 can be driven to move, and at this time the hollow cylindrical block 86 drives the disc block 2 51 to move to the right. The disc block 2 51 drives one end of the telescopic rod 2 61 to move rightward, and the telescopic rod 2 61 drives the trapezoidal block 66 to move rightward. At this time, the positioning trapezoidal member 68 no longer limits the trapezoidal block 66, so that the trapezoidal block 66 can rotate clockwise. At this time, the volute spring 63 is released to drive the telescopic rod 2 61 to rotate, and the telescopic rod 2 61 drives the telescopic rod 3 71 to rotate. The telescopic rod 3 71 drives the cutting column 73 to rotate clockwise, and the cutting column 73 drives the left cylindrical block 77 to rotate counterclockwise through the intermediate bevel gear 75. The left cylindrical block 77 drives the impeller 78 to rotate counterclockwise. When the impeller 78 rotates counterclockwise, it drives the liquid to move in the direction away from the telescopic rod 2 61, so as to offset the water hammer, thereby further effectively reducing the impact force of the water hammer effect.

[0027] To sum up, for the stop valve with adaptive flow ratio, when the pressure of the liquid output from the valve body 1 to the liquid outlet pipe 3 is too high, the high-pressure oil in the liquid outlet pipe 3 forms pressure on the disc block 42, so that the disc block 42 compresses the spring 41, so that the disc block 42 drives the connecting transmission rod 43, and the connecting transmission rod 43 drives the blocking square disc 44 to move to the left, so that the left side of the valve body 1 is blocked, thereby reducing the liquid entering the valve body 1, thereby avoiding excessive flow, and playing a role of adaptive flow control. By reducing the flow, it can effectively prevent instability caused by excessive pressure in the system, and avoid pressure fluctuations caused by excessive flow. This adjustment mechanism can reduce the impact of excessive flow or pressure on the valve body 1 and the entire pipeline system, avoid water hammer effect or other potential damage, and ensure the safe operation of the system.

[0028] When the liquid passes through the impeller 78, it drives the impeller 78 to rotate clockwise. The impeller 78 drives the right gear ring 74 to rotate counterclockwise through the intermediate bevel gear 75. The right gear ring 74 drives the right cylindrical block 72 to rotate counterclockwise. The right cylindrical block 72 drives the cutting column 73 to rotate counterclockwise. The cutting column 73 rotates in reverse relative to the impeller 78, which can effectively alleviate the pressure fluctuations in the liquid flow, reduce the water hammer effect or impact caused by the sudden change of pressure, and protect other components in the system, especially when the liquid flow rate is large or the flow rate is fast. The reverse rotation of the cutting column 73 relative to the impeller 78 helps to produce a "resistance" mechanism in the liquid flow. Specifically, when the liquid flow rate is high, or when a sudden pressure change occurs during the flow process, the reverse rotating cutting column 73 can exert a certain resistance or regulating effect on the fluid. This reverse dynamic action will consume a part of the kinetic energy of the liquid, thereby alleviating the sudden pressure fluctuations that may occur in the fluid.

[0029] At this time, the telescopic rod three 71 drives the telescopic rod two 61 to rotate, so that when the telescopic rod two 61 rotates counterclockwise, it drives the trapezoidal block 66 to rotate, and the inclined surface of the trapezoidal block 66 contacts the inclined surface of the positioning trapezoidal member 68. At this time, the trapezoidal block 66 is squeezed by the positioning trapezoidal member 68, so that the trapezoidal block 66 repeatedly squeezes the spring four 65 downward. At this time, the rotation of the telescopic rod two 61 drives the central connecting shaft 64 to rotate, and the central connecting shaft 64 drives the volute spring 63 to store force. When the telescopic rod two 61 rotates clockwise, it drives the trapezoidal block 66 to rotate clockwise. The straight surface of the trapezoidal block 66 contacts the straight surface of the positioning trapezoidal member 68, so that the trapezoidal block 66 cannot rotate clockwise, so that the telescopic rod two 61 can only rotate counterclockwise at this time to drive the volute spring 63 to store force.

[0030] When the disc block 2 51 encounters a water hammer impact, the disc block 2 51 squeezes the sealing telescopic tube 52, and the spring 2 54 in the sealing telescopic tube 52 is compressed. The water hammer impact force is partially converted into the compression storage force of the spring 2 54, and at this time, the air in the sealing telescopic tube 52 pushes the sealing plate 58 by squeezing, so that the air in the sealing telescopic tube 52 is quickly discharged through the through hole groove 55. When the compression force of the spring 2 54 is to be released to drive the sealing telescopic tube 52 to extend, the air in the sealing telescopic tube 52 can only enter through the tiny through hole 510, so that the sealing telescopic tube 52 continues to apply compression force to the spring 2 54 under the negative pressure of the internal air, so that the spring 2 54 can only extend slowly, avoiding the absorbed impact force from being quickly released. When the disc block 2 51 is impacted by the water hammer effect, it squeezes the sealing telescopic tube 52 and converts the impact force into the compression potential energy of the spring 2 54. In this way, the instantaneous high impact force is partially absorbed and dispersed, preventing it from being directly transmitted to other components of the pipeline system, and avoiding equipment damage caused by instantaneous high pressure. The air in the sealed telescopic tube 52 is discharged by squeezing and pushing the sealing plate 58, but when the spring 2 54 tries to return to its original state, the air can only enter slowly through the tiny through hole 510. This design increases the resistance of the spring to release the compressed energy, delays the elongation process of the sealed telescopic tube 52, and prevents the absorbed impact force from being released quickly, thus avoiding the generation of secondary shock waves. The water hammer effect usually accumulates pressure due to repeated reflections of shock waves, leading to greater system damage. This structure breaks the cumulative effect of the water hammer impact force through buffering and staged release, reducing the harm of water hammer to the system from the source.

[0031] The hollow cylindrical block 86 is filled with non-Newtonian fluid, so that the disc block 83 is subjected to a small impact under normal circumstances, and the disc block 83 drives the connecting rod 85 and the cylindrical trigger block 87 to move relatively slowly; When the water hammer effect of the liquid comes, the liquid impacts the disc block three 83, so that the disc block three 83 squeezes the spring five 82, so that it plays a buffering role. At the same time, the disc block three 83 drives the connecting rod 85, and the connecting rod 85 drives the cylindrical trigger block 87 to be pushed quickly. When the cylindrical trigger block 87 moves quickly and impacts the full non-Newtonian fluid placed in the hollow cylindrical block 86, it can drive the hollow cylindrical block 86 to move. At this time, the hollow cylindrical block 86 drives the disc block two 51 to move right, and the disc block two 51 drives one end of the telescopic rod two 61 to move right, and the telescopic rod two 61 drives the trapezoidal block 6 6 moves to the right, at which time the positioning trapezoidal member 68 no longer limits the trapezoidal block 66, so that the trapezoidal block 66 can rotate clockwise, at which time the volute spring 63 is released to drive the telescopic rod 2 61 to rotate, the telescopic rod 2 61 drives the telescopic rod 3 71 to rotate, the telescopic rod 3 71 drives the cutting column 73 to rotate clockwise, the cutting column 73 drives the left cylindrical block 77 to rotate counterclockwise through the intermediate bevel gear 75, the left cylindrical block 77 drives the impeller 78 to rotate counterclockwise, and the impeller 78 drives the liquid to move away from the telescopic rod 2 61 when rotating counterclockwise, and the water hammer that hits is counteracted, thereby further effectively reducing the impact force of the water hammer effect. The water hammer effect generated when the valve body 1 adaptively adjusts the flow is further avoided.

[0032] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

Claims

1. A stop valve with adaptive flow ratio, characterized in that: include: A valve body (1), used to carry and fix various components of the stop valve; A liquid inlet pipe (2), used for introducing fluid into the stop valve, wherein the liquid inlet pipe (2) is fixedly connected to the left side of the valve body (1); A liquid outlet pipe (3), used for discharging fluid from the stop valve, the liquid outlet pipe (3) being fixedly connected to the right side of the valve body (1); An adaptive flow ratio mechanism (4), wherein the adaptive flow ratio mechanism (4) is arranged on the liquid outlet pipe (3) and the valve body (1) and is used to adjust excessive pressure in the liquid outlet pipe (3); An energy absorbing mechanism (5), the energy absorbing mechanism (5) being arranged on the inner wall of the liquid inlet pipe (2) and being used for alleviating and absorbing the water hammer effect; A power storage mechanism (6) for storing energy by power storage; The cutting mechanism (7) is used to cut and buffer the flow of liquid under normal circumstances, and to rotate in the opposite direction to alleviate pressure fluctuations and reduce impact when encountering water hammer; The buffer mechanism (8) is used to absorb and mitigate the impact force in the flow of fluid.

2. The self-adaptive flow ratio stop valve according to claim 1, characterized in that: The adaptive flow ratio mechanism (4) comprises a spring 1 (41), one end of which is fixedly connected to the inner wall of the liquid outlet pipe (3), the other end of which is fixedly connected to a disc block 1 (42), the outer wall of which is fixedly connected to one end of a connecting transmission rod (43), the other end of which is fixedly connected to a blocking square disc (44), and the inner wall of the valve body (1) is fixedly connected to a hollow connecting block (45).

3. The self-adaptive flow ratio stop valve according to claim 2, characterized in that: The outer wall of the disc block (42) is connected to the inner wall piston of the liquid outlet pipe (3), the inner wall of the hollow connecting block (45) is connected to the piston of the blocking square disc (44), the outer wall of the connecting transmission rod (43) is slidably connected to the inner wall of the liquid outlet pipe (3), and the inner wall of the hollow connecting block (45) is slidably connected to the inner wall of the liquid outlet pipe (3).

4. The self-adaptive flow ratio stop valve according to claim 2, characterized in that: The energy absorbing mechanism (5) comprises a second disc block (51), a piston of the second disc block (51) being connected to the inner wall of the liquid inlet pipe (2), an outer wall of the second disc block (51) being fixedly connected to one end of a sealed telescopic tube (52), the other end of the sealed telescopic tube (52) being fixedly connected to a positioning block (53), an inner wall of the sealed telescopic tube (52) being fixedly connected to one end of a second spring (54), the other end of the second spring (54) being fixedly connected to the positioning block (53), A through hole groove (55) is formed on the inner wall of the positioning block (53); a connecting plate (56) is fixedly connected to the inner wall of the positioning block (53); one end of a spring three (57) is fixedly connected to the outer wall of the connecting plate (56); the other end of the spring three (57) is fixedly connected to a sealing plate (58); one end of a telescopic rod one (59) is fixedly connected to the outer wall of the sealing plate (58); the other end of the telescopic rod one (59) is fixedly connected to the outer wall of the connecting plate (56).

5. The self-adaptive flow ratio stop valve according to claim 4, characterized in that: The outer wall of the positioning block (53) is fixedly connected to the inner wall of the liquid inlet pipe (2), and a tiny through hole (510) is provided on the inner wall of the sealing plate (58).

6. The self-adaptive flow ratio stop valve according to claim 5, characterized in that: The force storage mechanism (6) comprises a second telescopic rod (61), one end of which is rotatably connected to the inner wall of the second disc block (51), the other end of which is fixedly connected to a central connecting shaft (64), the outer wall of the liquid inlet pipe (2) is fixedly connected to an annular member (62), the inner wall of the annular member (62) is fixedly connected to one end of a spiral spring (63), the other end of the spiral spring (63) is fixedly connected to the outer wall of the central connecting shaft (64), the outer wall of the second telescopic rod (61) is fixedly connected to one end of a fourth spring (65), the other end of which is driven to be fixedly connected to a trapezoidal block (66), the inner wall of the liquid inlet pipe (2) is fixedly connected to a fixing ring member (67), and the inner wall of the fixing ring member (67) is fixedly connected to a positioning trapezoidal member (68).

7. The self-adaptive flow ratio stop valve according to claim 6, characterized in that: The outer wall of the trapezoidal block (66) is slidably connected to the inner wall of the second telescopic rod (61), and a plurality of positioning trapezoidal members (68) are provided, and the positioning trapezoidal members (68) are arranged in a circular array.

8. The self-adaptive flow ratio stop valve according to claim 7, characterized in that: The cutting mechanism (7) comprises a telescopic rod three (71), one end of the telescopic rod three (71) is fixedly connected to the outer wall of the telescopic rod two (61), the other end of the telescopic rod three (71) is fixedly connected to a right cylindrical block (72), the outer wall of the right cylindrical block (72) is fixedly connected to a cutting column (73), the outer wall of the right cylindrical block (72) is fixedly connected to a right gear ring (74), an inner wall of the liquid inlet pipe (2) is rotatably connected to an intermediate bevel gear (75), the intermediate bevel gear (75) meshes with the right gear ring (74), a left connecting shaft (76) is rotatably connected to the inner wall of the liquid inlet pipe (2), the outer wall of the left connecting shaft (76) is fixedly connected to a left cylindrical block (77), the outer wall of the left cylindrical block (77) is fixedly connected to an impeller (78), the outer wall of the left cylindrical block (77) is fixedly connected to a left gear ring (79), the outer wall of the left gear ring (79) meshes with the intermediate bevel gear (75).

9. The self-adaptive flow ratio stop valve according to claim 8, characterized in that: The buffer mechanism (8) comprises a fixed positioning member (81), the fixed positioning member (81) being fixedly connected to the inner wall of the liquid inlet pipe (2), the outer wall of the fixed positioning member (81) being fixedly connected to one end of a spring five (82), the other end of the spring five (82) being fixedly connected to a disc block three (83), the outer wall of the disc block three (83) being fixedly connected to one end of a telescopic rod four (84), the other end of the telescopic rod four (84) being fixedly connected to the outer wall of the fixed positioning member (81), the outer wall of the disc block three (83) being fixedly connected to one end of a connecting rod member (85), the other end of the connecting rod member (85) being fixedly connected to a cylindrical trigger block (87), and the inner wall of the liquid inlet pipe (2) being fixedly connected to a hollow cylindrical block (86).

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