Valve electric actuating mechanism suitable for long-distance pipeline

Abstract

The invention relates to the technical field of valves, in particular to a valve electric actuating mechanism suitable for a long-distance pipeline, which comprises a valve body, an actuating box is fixedly connected to the top of the valve body, a valve rod is rotatably connected in the valve body, and a valve ball matched with the valve body is fixedly connected to the bottom end of the valve rod. The top end of the valve rod is fixedly connected with a rotating disc located in the execution box, a movable block and a fixed block are arranged on the two sides of the rotating disc respectively, the rotating disc is provided with a reset piece matched with the movable block, the fixed block is fixedly connected with the rotating disc, and the execution box is provided with a damping driving assembly used for driving the rotating disc to rotate. The execution box is provided with a positioning locking structure used for positioning the positions of the movable block and the fixed block. The damping driving assembly drives the rotating disc to rotate to the preset position, when the damping driving assembly breaks down, the position of the valve rod can be locked through the positioning locking structure, and fluid conveying is prevented from being affected.

Description

Technical Field

[0001] The present invention relates to the field of valve technology, and in particular to an electric valve actuator suitable for long-distance pipelines. Background Art

[0002] Valves are pipe accessories used to open and close pipes, control flow direction, and adjust and control the parameters (temperature, pressure, and flow) of the conveying medium. Valves are control components in fluid conveying systems and have functions such as shutoff, regulation, flow diversion, backflow prevention, pressure stabilization, flow diversion, or overflow pressure relief.

[0003] Most of the existing electric actuators of valves use motors to drive multiple gears to achieve transmission, drive the valve stem inside the valve to rotate, and realize the function of valve opening and closing. However, it is worth considering that after the valve stem drives the valve ball to rotate to the preset position, the position of the valve stem is not locked and limited. When the motor fails, as the fluid continues to be delivered, it is easy to cause the position of the valve ball and the valve stem to change, affecting the delivery of the fluid, which has certain limitations.

[0004] Therefore, in order to solve the above problems, a related facility that better meets the usage requirements is needed. Summary of the invention

[0005] In view of this, the purpose of the present invention is to propose a valve electric actuator suitable for long-distance pipelines to solve the above-mentioned problem that when the motor fails, the position of the valve ball and the valve stem may change as the fluid continues to be transported.

[0006] Based on the above-mentioned purpose, the present invention provides an electric valve actuator suitable for long-distance pipelines, including a valve body, the top of the valve body is fixedly connected to an actuator box, the valve body is rotatably connected to a valve stem, the bottom end of the valve stem is fixedly connected to a valve ball matched with the valve body, the top end of the valve stem is fixedly connected to a rotating disk located in the actuator box, a movable block and a fixed block are respectively provided on both sides of the rotating disk, the rotating disk is equipped with a reset part matched with the movable block, the fixed block and the rotating disk are fixedly connected, the actuator box is equipped with a damping drive assembly for driving the rotating disk to rotate, and the actuator box is equipped with a positioning locking structure for positioning the positions of the movable block and the fixed block.

[0007] Optionally, the positioning locking structure includes a fixed seat and an adjustment seat arranged above the rotating disk, the bottom of the fixed seat is fixedly connected with an arc plate adapted to the movable block, the execution box is fixedly installed with a plurality of first hydraulic telescopic rods, and the telescopic ends of the first hydraulic telescopic rods are fixedly connected to the arc plate, the two sides of the fixed block are respectively provided with a first stop block and a second stop block, the top of the first stop block is fixedly connected to the bottom of the adjustment seat, the second stop block is fixedly connected to the inner wall of the execution box, the execution box is installed with a position adjustment mechanism for driving the adjustment seat to move, and the fixed seat and the adjustment seat are respectively provided with locking parts adapted to the rotating disk.

[0008] Optionally, the position adjustment mechanism includes a support sleeve arranged above the rotating disk, and the axes of the support sleeve and the valve stem are consistent, the external rotating sleeve of the support sleeve is provided with a support frame, the support frame and the inner wall of the execution box are fixedly connected, the execution box is equipped with a rotating unit for driving the support sleeve to rotate, an avoidance hole is provided on the adjustment seat, and the support sleeve passes through the avoidance hole, two guide grooves are provided on the inner wall of the avoidance hole, two guide strips are fixedly connected to the outer wall of the support sleeve, and the guide strips pass through the corresponding guide grooves, and the execution box is equipped with a vertical mover compatible with the adjustment seat.

[0009] Optionally, the vertical mover includes an arc-shaped bar arranged in the execution box, and a plurality of second hydraulic telescopic rods are fixedly installed on the execution box. The telescopic ends of the second hydraulic telescopic rods are fixedly connected to the arc-shaped bar, and a sliding groove is opened on the inner wall of the arc-shaped bar. The top of the adjustment seat is fixedly connected with a support part, and the support part is fixedly installed with a sliding block located in the sliding groove.

[0010] Optionally, the rotating unit includes a worm wheel fixedly mounted on the outside of the supporting sleeve, a worm rotatably connected in the execution box and meshing with the worm wheel, a first servo motor is fixedly installed on the execution box, and an output end of the first servo motor is fixedly connected to the worm wheel.

[0011] Optionally, the locking member includes a first fixed plate respectively arranged above the fixed seat and the adjusting seat, the fixed seat and the adjusting seat are respectively penetrated by positioning columns, the top of the positioning column and the bottom of the first fixed plate are fixedly connected, the fixed seat and the adjusting seat are respectively connected to the corresponding first fixed plate through a tension spring, and the rotating plate is provided with a first positioning hole and a second positioning hole respectively adapted to the two positioning columns.

[0012] Optionally, the reset member includes a base plate arranged below the movable block, the base plate and the bottom of the rotating disk are fixedly connected via a connecting plate, at least two guide columns are fixedly connected to the bottom of the movable block, the bottom ends of the guide columns pass through the base plate, and the bottom ends of the guide columns are fixedly connected to a second fixed disk located below the base plate, and the movable block and the base plate are connected via a first compression spring.

[0013] Optionally, the damping drive assembly includes a fixed column fixedly mounted on the top of the rotating disk, and a support sleeve is sleeved on the outside of the fixed column, the axes of the fixed column and the support sleeve are consistent, a groove is opened on the top of the fixed column, a prism is slidably arranged in the groove, a second compression spring is arranged in the groove, two ends of the second compression spring are respectively abutted against the bottom of the prism and the bottom inner wall of the groove, a first damping disk located above the execution box is fixedly connected to the top of the prism, a second damping disk is contacted with the top of the first damping disk, and a driver adapted to the second damping disk is installed in the execution box.

[0014] Optionally, the driver includes a support block fixedly mounted on the top of the second damping disk, a mounting shell is provided on the top contact of the execution box, the execution box is equipped with a disassembly and assembly part compatible with the mounting shell, the mounting shell is a cavity structure with an opening at the bottom, and the first damping disk and the second damping disk are both located in the mounting shell, the mounting shell is fixedly mounted with a second servo motor, the output end of the second servo motor is fixedly connected with a card block located in the mounting shell, a card slot compatible with the card block is provided on the top of the support block, and the card block is located in the card slot.

[0015] Optionally, the disassembly and assembly parts include a plurality of mounting plates fixedly mounted on the outer wall of the mounting shell, a screw rod passing through the mounting plate, the bottom end of the screw rod is fixedly connected to the top of the execution box, a nut is sleeved on the top end of the screw rod, the bottom of the nut is in contact with the top of the mounting plate, and the bottom of the mounting plate is in contact with the top of the execution box.

[0016] The beneficial effects of the present invention are as follows: the damping drive assembly drives the rotating disk to rotate, the rotating disk drives the valve ball to rotate through the valve stem, and the rotating disk drives the movable block and the fixed block to rotate synchronously. When the rotating disk rotates to a preset position, the positions of the movable block, the fixed block and the rotating disk are positioned by the positioning locking structure, so that the rotating disk, the valve stem and the valve ball are locked relative to the valve body. The damping drive assembly drives the rotating disk to rotate to a preset position. When the damping drive assembly fails, the position of the valve stem can be locked by the positioning locking structure to avoid affecting the fluid delivery. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings in the following description are only for the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present invention;

[0019] Figure 2 This is a schematic diagram of the structure inside the execution box of an embodiment of the present invention;

[0020] Figure 3 This is a structural schematic diagram of the installation position of the worm according to an embodiment of the present invention;

[0021] Figure 4 This is a schematic diagram of the structure of the curved plate according to an embodiment of the present invention;

[0022] Figure 5 It is a structural schematic diagram of an adjustment seat according to an embodiment of the present invention;

[0023] Figure 6 It is a structural schematic diagram of a rotating disk according to an embodiment of the present invention;

[0024] Figure 7 It is a structural schematic diagram of a reset member according to an embodiment of the present invention;

[0025] Figure 8 It is a schematic diagram of the structure of the fixed column, the first damping disc and the second damping disc separated according to an embodiment of the present invention.

[0026] The markings in the figure are:

[0027] 1. Valve body; 2. Actuator box; 3. Valve stem; 4. Valve ball; 5. Rotating plate; 6. Movable block; 7. Fixed block; 8. Curved plate; 9. Fixed seat; 10. Adjusting seat; 11. First stop block; 12. Second stop block; 13. Support sleeve; 14. Support frame; 15. Avoidance hole; 16. Guide groove; 17. Guide bar; 18. First hydraulic telescopic rod; 19. Curved bar; 20. Second hydraulic telescopic rod; 21. Support part; 22. Slide groove; 23. Sliding block; 24. Worm gear; 25. Worm; 26. First servo motor; 2 7. First fixed plate; 28. Positioning column; 29. ​​Tension spring; 30. First positioning hole; 31. Second positioning hole; 32. Bottom plate; 33. Connecting plate; 34. Guide column; 35. Second fixed plate; 36. First compression spring; 37. Fixed column; 38. Groove; 39. Prism; 40. Second compression spring; 41. First damping plate; 42. Second damping plate; 43. Mounting shell; 44. Second servo motor; 45. Block; 46. Support block; 47. Slot; 48. Mounting plate; 49. Screw; 50. Nut. DETAILED DESCRIPTION

[0028] In order to make the objectives, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with specific embodiments.

[0029] This embodiment proposes a valve electric actuator suitable for long-distance pipelines, such as Figure 1 and Figure 2As shown, it includes a valve body 1, the top of the valve body 1 is fixedly connected to an execution box 2, a valve stem 3 is rotatably connected in the valve body 1, the bottom end of the valve stem 3 is fixedly connected to a valve ball 4 adapted to the valve body 1, the top of the valve stem 3 is fixedly connected to a rotating disk 5 located in the execution box 2, a movable block 6 and a fixed block 7 are respectively provided on both sides of the rotating disk 5, the rotating disk 5 is equipped with a reset piece adapted to the movable block 6, the fixed block 7 is fixedly connected to the rotating disk 5, the execution box 2 is equipped with a damping drive component for driving the rotating disk 5 to rotate, and the execution box 2 is equipped with a damping drive component for positioning the movable block 6 and the fixed block 7 The damping drive assembly drives the rotating disk 5 to rotate, and the rotating disk 5 drives the valve ball 4 to rotate through the valve stem 3, and the rotating disk 5 drives the movable block 6 and the fixed block 7 to rotate synchronously. When the rotating disk 5 rotates to the preset position, the positions of the movable block 6, the fixed block 7 and the rotating disk 5 are positioned by the positioning locking structure, so that the rotating disk 5, the valve stem 3 and the valve ball 4 are locked relative to the valve body 1. The damping drive assembly drives the rotating disk 5 to rotate to the preset position. When the damping drive assembly fails, the position of the valve stem 3 can be locked by the positioning locking structure to avoid affecting the fluid delivery.

[0030] In some optional specific embodiments, such as Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6As shown, the positioning locking structure includes a fixed seat 9 and an adjusting seat 10 arranged above the rotating disk 5, the bottom of the fixed seat 9 is fixedly connected with an arc plate 8 adapted to the movable block 6, the execution box 2 is fixedly installed with a plurality of first hydraulic telescopic rods 18, and the telescopic ends of the first hydraulic telescopic rods 18 are fixedly connected to the arc plate 8, and the two sides of the fixed block 7 are respectively provided with a first stop block 11 and a second stop block 12, the top of the first stop block 11 is fixedly connected to the bottom of the adjusting seat 10, and the second stop block 12 is fixedly connected to the inner wall of the execution box 2, and the execution box 2 is installed with a position adjustment mechanism for driving the adjustment seat 10 to move. The fixed seat 9 and the adjustment seat 10 are respectively provided with locking parts adapted to the rotating disk 5. The position adjustment mechanism includes a support sleeve 13 arranged above the rotating disk 5, and the axis of the support sleeve 13 and the valve stem 3 are consistent. The outer rotating sleeve of the support sleeve 13 is provided with a support frame 14, and the support frame 14 is fixedly connected to the inner wall of the execution box 2. The execution box 2 is equipped with a rotating unit for driving the support sleeve 13 to rotate. An avoidance hole 15 is provided on the adjustment seat 10, and the support sleeve 13 passes through the avoidance hole 15. Two guide grooves 16 are provided on the inner wall of the avoidance hole 15. Two guide strips 17 are fixedly connected to the outer wall of the support sleeve 13, and the guide strips 17 are fixedly connected to the outer wall of the support sleeve 13. The strip 17 passes through the corresponding guide groove 16, the execution box 2 is equipped with a vertical mover adapted to the adjustment seat 10, the vertical mover includes an arc strip 19 arranged in the execution box 2, the execution box 2 is fixedly installed with a plurality of second hydraulic telescopic rods 20, the telescopic ends of the second hydraulic telescopic rods 20 are fixedly connected to the arc strip 19, a slide groove 22 is provided on the inner wall of the arc strip 19, the top of the adjustment seat 10 is fixedly connected with a support portion 21, the support portion 21 is fixedly installed with a slider 23 located in the slide groove 22, the rotating unit includes a worm gear 24 fixedly sleeved on the outside of the support sleeve 13, and the execution box 2 is rotatably connected with the worm gear 24 meshing worm 25, the execution box 2 is fixedly installed with a first servo motor 26, and the output end of the first servo motor 26 is fixedly connected to the worm 25, the locking member includes a first fixed disk 27 respectively arranged above the fixed seat 9 and the adjustment seat 10, and the fixed seat 9 and the adjustment seat 10 are respectively penetrated by a positioning column 28, the top of the positioning column 28 is fixedly connected to the bottom of the first fixed disk 27, the fixed seat 9 and the adjustment seat 10 are respectively connected to the corresponding first fixed disk 27 through a tension spring 29, and the rotating disk 5 is provided with a first positioning hole 30 and a second positioning hole 31 respectively adapted to the two positioning columns 28;

[0031] The arc plate 8 is in contact with the movable block 6, the fixed block 7 is in contact with the second stop block 12, and the bottom end of the positioning column 28 on the fixed seat 9 is located in the first positioning hole 30. The positioning column 28 and the first positioning hole 30 are designed to fix the rotating disk 5 and the valve stem 3 relative to the actuator box 2 and the valve body 1. When the position of the valve stem 3 and the valve ball 4 needs to be adjusted, the worm 25 is driven to rotate by the first servo motor 26, and the worm 25 drives the support sleeve 13 to rotate through the worm gear 24. The support sleeve 13 drives the adjustment seat 10 to rotate synchronously through the guide strip 17, thereby changing the position of the positioning column 28 and the first stop block 11 on the adjustment seat 10, and the adjustment seat 10 drives the slider 23 to slide in the slide groove 22 through the support portion 21. When the first stop block 11 moves to the preset position, the adjustment seat 10 drives the slider 23 to slide in the slide groove 2 ... The arc strip 19 is driven downward by the second hydraulic telescopic rod 20, and the arc strip 19 drives the adjustment seat 10 and the first stop block 11 to move downward through the slider 23 and the support part 21. The adjustment seat 10 slides relative to the guide strip 17 and the support sleeve 13, and the bottom end of the positioning column 28 on the adjustment seat 10 contacts the top of the rotating disk 5. As the adjustment seat 10 continues to move downward, the adjustment seat 10 slides relative to the positioning column 28, and the tension spring 29 located above the adjustment seat 10 is in a stretched state, and the arc plate 8 and the fixed seat 9 are driven upward by the first hydraulic telescopic rod 18, so that the bottom end of the positioning column 28 on the fixed seat 9 is disengaged from the first positioning hole 30, thereby releasing the limitation on the position of the rotating disk 5, and the bottom horizontal position of the arc plate 8 is higher than the top horizontal position of the movable block 6. At this time The damping drive assembly drives the rotating disk 5 to rotate, and the bottom end of the positioning column 28 on the adjustment seat 10 rotates relative to the top sliding movable block 6 of the rotating disk 5 to the bottom of the arc plate 8. When the fixed block 7 and the first stop block 11 are in contact, the positioning column 28 on the adjustment seat 10 moves to the top of the second positioning hole 31, and the tension spring 29 located above the adjustment seat 10 drives the first fixed disk 27 and the positioning column 28 to move downward, so that the bottom end of the positioning column 28 is inserted into the second positioning hole 31, so that the rotating disk 5 automatically stops after rotating to the preset position, and the rotating disk 5 is locked and fixed relative to the execution box 2 and the valve body 1. When the valve needs to be closed to reset the valve stem 3 and the valve ball 4 to the initial position, the arc plate 8 is driven downward to the initial height by the first hydraulic telescopic rod 18. , and the arc plate 8 pushes the movable block 6 to move downward, the bottom end of the positioning column 28 on the fixed seat 9 abuts against the top of the rotating disk 5, and the second hydraulic telescopic rod 20 drives the arc bar 19 to move up to the initial height, so that the bottom end of the positioning column 28 on the adjustment seat 10 is disengaged from the second positioning hole 31, and the limit on the position of the rotating disk 5 is released. The rotating disk 5 is driven to rotate in the opposite direction by the damping drive component. When the rotating disk 5 drives the fixed block 7 to rotate in the opposite direction to the initial position, the fixed block 7 contacts the second stop block 12, and at this time, the positioning column 28 on the fixed seat 9 moves to the top of the first positioning hole 30, and the tension spring 29 above the fixed seat 9 drives the first fixed disk 27 and the positioning column 28 to move downward, so that the bottom end of the positioning column 28 is inserted into the first positioning hole 30,The top of the movable block 6 no longer contacts the bottom of the arc plate 8, and the reset member drives the movable block 6 to move up to the initial height, which can limit the position of the movable block 6, the fixed block 7 and the rotating disk 5 again, so that the rotating disk 5 is locked and fixed relative to the valve body 1. When the damping drive assembly drives the rotating disk 5 to rotate to the preset position, the position of the valve stem 3 can still be locked by the positioning locking structure when the damping drive assembly fails.

[0032] In some optional specific embodiments, such as Figure 1 , Figure 2 , Figure 3 , Figure 6 , Figure 7 and Figure 8 As shown, the reset member includes a bottom plate 32 arranged below the movable block 6, the bottom plate 32 and the bottom of the rotating disk 5 are fixedly connected by a connecting plate 33, at least two guide columns 34 are fixedly connected to the bottom of the movable block 6, the bottom ends of the guide columns 34 pass through the bottom plate 32, and the bottom ends of the guide columns 34 are fixedly connected to a second fixed disk 35 located below the bottom plate 32, the movable block 6 and the bottom plate 32 are connected by a first compression spring 36, and the damping drive assembly includes a fixed column 37 fixedly installed on the top of the rotating disk 5, and the support The support sleeve 13 is sleeved on the outside of the fixed column 37, and the axis of the fixed column 37 and the support sleeve 13 are consistent. A groove 38 is opened on the top of the fixed column 37, and a prism 39 is slidably arranged in the groove 38. A second compression spring 40 is arranged in the groove 38. The two ends of the second compression spring 40 are respectively abutted against the bottom of the prism 39 and the bottom inner wall of the groove 38. The top of the prism 39 is fixedly connected to a first damping disk 41 located above the execution box 2. The top of the first damping disk 41 is in contact with a second damping disk 42. The travel box 2 is equipped with a driver adapted to the second damping disk 42, and the driver includes a support block 46 fixedly mounted on the top of the second damping disk 42. The top contact of the execution box 2 is provided with a mounting shell 43, and the execution box 2 is equipped with a disassembly and assembly part adapted to the mounting shell 43. The mounting shell 43 is a cavity structure with an opening at the bottom, and the first damping disk 41 and the second damping disk 42 are both located in the mounting shell 43. The mounting shell 43 is fixedly installed with a second servo motor 44, and the output end of the second servo motor 44 is fixedly connected to a The block 45 in the mounting shell 43 is provided with a slot 47 adapted to the block 45 on the top of the support block 46, and the block 45 is located in the slot 47. The disassembly and assembly parts include a plurality of mounting plates 48 fixedly mounted on the outer wall of the mounting shell 43, a screw rod 49 passes through the mounting plate 48, the bottom end of the screw rod 49 is fixedly connected to the top of the execution box 2, a nut 50 is sleeved on the top of the screw rod 49, the bottom of the nut 50 is in contact with the top of the mounting plate 48, and the bottom of the mounting plate 48 is in contact with the top of the execution box 2;

[0033] The first compression spring 36 is initially in a compressed state, and the first compression spring 36 applies an upward thrust to the movable block 6 so that the top of the second fixed plate 35 and the bottom of the bottom plate 32 are in close contact. When the arc plate 8 presses the movable block 6 to move downward, the movable block 6, the guide column 34 and the second fixed plate 35 move downward relative to the bottom plate 32, and the length of the first compression spring 36 becomes shorter. When the top of the movable block 6 is no longer in contact with the bottom of the arc plate 8, the first compression spring 36 drives the movable block 6 to move up to the initial height, and the second fixed plate 35 is pressed against the bottom plate 32. The top of the second compression spring 40 is in contact with the bottom of the bottom plate 32, and the initial state of the second compression spring 40 is in a compressed state. The second compression spring 40 applies a thrust to the prism 39 and the first damping disc 41, so that the first damping disc 41 and the second damping disc 42 are tightly attached. The second servo motor 44 drives the block 45, the support block 46 and the second damping disc 42 to rotate. The second damping disc 42 drives the first damping disc 41, the prism 39 and the fixed column 37 to rotate synchronously through the friction force, and the fixed column 37 can drive the rotating disk 5, the movable block 6 and The fixing block 7 rotates. When the fixing block 7 contacts the second stop block 12 or the first stop block 11, as the second damping disc 42 continues to rotate, the second damping disc 42 cannot drive the first damping disc 41 to rotate synchronously by friction, so that the rotating disc 5 automatically stops after rotating to the preset position. The staff drives the nut 50 to rotate so that the nut 50 is disengaged from the screw rod 49, thereby releasing the position restriction of the mounting plate 48 and the mounting shell 43. The staff drives the mounting shell 43 and the mounting plate 48 to move upward so that the screw rod 49 is disengaged. The mounting shell 43 is separated from the mounting plate 48, and the mounting shell 43 is dismantled, and the mounting shell 43 drives the card block 45 to disengage from the card slot 47 through the second servo motor 44, thereby releasing the limitation on the position of the second damping disk 42. The staff drives the second damping disk 42 to move upward to complete the removal of the second damping disk 42. The staff drives the first damping disk 41 and the prism 39 to move upward so that the bottom end of the prism 39 is no longer located in the groove 38, thereby completing the removal of the first damping disk 41, and facilitating the replacement of the first damping disk 41 and the second damping disk 42.

[0034] Working principle: The damping drive assembly drives the rotating disk 5 to rotate, and the rotating disk 5 drives the valve ball 4 to rotate through the valve stem 3, and the rotating disk 5 drives the movable block 6 and the fixed block 7 to rotate synchronously. When the rotating disk 5 rotates to the preset position, the movable block 6, the fixed block 7 and the rotating disk 5 are positioned by the positioning locking structure, so that the rotating disk 5, the valve stem 3 and the valve ball 4 are locked relative to the valve body 1. The damping drive assembly drives the rotating disk 5 to rotate to the preset position. When the damping drive assembly fails, the position of the valve stem 3 can be locked by the positioning locking structure to avoid affecting the delivery of the fluid;

[0035] The arc plate 8 is in contact with the movable block 6, the fixed block 7 is in contact with the second stop block 12, and the bottom end of the positioning column 28 on the fixed seat 9 is located in the first positioning hole 30. The positioning column 28 and the first positioning hole 30 are designed to fix the rotating disk 5 and the valve stem 3 relative to the actuator box 2 and the valve body 1. When the position of the valve stem 3 and the valve ball 4 needs to be adjusted, the worm 25 is driven to rotate by the first servo motor 26, and the worm 25 drives the support sleeve 13 to rotate through the worm gear 24. The support sleeve 13 drives the adjustment seat 10 to rotate synchronously through the guide strip 17, thereby changing the position of the positioning column 28 and the first stop block 11 on the adjustment seat 10, and the adjustment seat 10 drives the slider 23 to slide in the slide groove 22 through the support portion 21. When the first stop block 11 moves to the preset position, the adjustment seat 10 drives the slider 23 to slide in the slide groove 2 ... The arc strip 19 is driven downward by the second hydraulic telescopic rod 20, and the arc strip 19 drives the adjustment seat 10 and the first stop block 11 to move downward through the slider 23 and the support part 21. The adjustment seat 10 slides relative to the guide strip 17 and the support sleeve 13, and the bottom end of the positioning column 28 on the adjustment seat 10 contacts the top of the rotating disk 5. As the adjustment seat 10 continues to move downward, the adjustment seat 10 slides relative to the positioning column 28, and the tension spring 29 located above the adjustment seat 10 is in a stretched state, and the arc plate 8 and the fixed seat 9 are driven upward by the first hydraulic telescopic rod 18, so that the bottom end of the positioning column 28 on the fixed seat 9 is disengaged from the first positioning hole 30, thereby releasing the limitation on the position of the rotating disk 5, and the bottom horizontal position of the arc plate 8 is higher than the top horizontal position of the movable block 6. At this time The damping drive assembly drives the rotating disk 5 to rotate, and the bottom end of the positioning column 28 on the adjustment seat 10 rotates relative to the top sliding movable block 6 of the rotating disk 5 to the bottom of the arc plate 8. When the fixed block 7 and the first stop block 11 are in contact, the positioning column 28 on the adjustment seat 10 moves to the top of the second positioning hole 31, and the tension spring 29 located above the adjustment seat 10 drives the first fixed disk 27 and the positioning column 28 to move downward, so that the bottom end of the positioning column 28 is inserted into the second positioning hole 31, so that the rotating disk 5 automatically stops after rotating to the preset position, and the rotating disk 5 is locked and fixed relative to the execution box 2 and the valve body 1. When the valve needs to be closed to reset the valve stem 3 and the valve ball 4 to the initial position, the arc plate 8 is driven downward to the initial height by the first hydraulic telescopic rod 18. , and the arc plate 8 pushes the movable block 6 to move downward, the bottom end of the positioning column 28 on the fixed seat 9 abuts against the top of the rotating disk 5, and the second hydraulic telescopic rod 20 drives the arc bar 19 to move up to the initial height, so that the bottom end of the positioning column 28 on the adjustment seat 10 is disengaged from the second positioning hole 31, and the limit on the position of the rotating disk 5 is released. The rotating disk 5 is driven to rotate in the opposite direction by the damping drive component. When the rotating disk 5 drives the fixed block 7 to rotate in the opposite direction to the initial position, the fixed block 7 contacts the second stop block 12, and at this time, the positioning column 28 on the fixed seat 9 moves to the top of the first positioning hole 30, and the tension spring 29 above the fixed seat 9 drives the first fixed disk 27 and the positioning column 28 to move downward, so that the bottom end of the positioning column 28 is inserted into the first positioning hole 30,The top of the movable block 6 is no longer in contact with the bottom of the arc plate 8, and the reset member drives the movable block 6 to move up to the initial height, so that the positions of the movable block 6, the fixed block 7 and the rotating disk 5 can be limited again, so that the rotating disk 5 is locked and fixed relative to the valve body 1. When the damping drive assembly drives the rotating disk 5 to rotate to the preset position, when the damping drive assembly fails, the position of the valve stem 3 can still be locked by the positioning locking structure;

[0036] The first compression spring 36 is initially in a compressed state, and the first compression spring 36 applies an upward thrust to the movable block 6 so that the top of the second fixed plate 35 and the bottom of the bottom plate 32 are in close contact. When the arc plate 8 presses the movable block 6 to move downward, the movable block 6, the guide column 34 and the second fixed plate 35 move downward relative to the bottom plate 32, and the length of the first compression spring 36 becomes shorter. When the top of the movable block 6 is no longer in contact with the bottom of the arc plate 8, the first compression spring 36 drives the movable block 6 to move up to the initial height, and the second fixed plate 35 is pressed against the bottom plate 32. The top of the second compression spring 40 is in contact with the bottom of the bottom plate 32, and the initial state of the second compression spring 40 is in a compressed state. The second compression spring 40 applies a thrust to the prism 39 and the first damping disc 41, so that the first damping disc 41 and the second damping disc 42 are tightly attached. The second servo motor 44 drives the block 45, the support block 46 and the second damping disc 42 to rotate. The second damping disc 42 drives the first damping disc 41, the prism 39 and the fixed column 37 to rotate synchronously through the friction force, and the fixed column 37 can drive the rotating disk 5, the movable block 6 and The fixing block 7 rotates. When the fixing block 7 contacts the second stop block 12 or the first stop block 11, as the second damping disc 42 continues to rotate, the second damping disc 42 cannot drive the first damping disc 41 to rotate synchronously by friction, so that the rotating disc 5 automatically stops after rotating to the preset position. The staff drives the nut 50 to rotate so that the nut 50 is disengaged from the screw rod 49, thereby releasing the position restriction of the mounting plate 48 and the mounting shell 43. The staff drives the mounting shell 43 and the mounting plate 48 to move upward so that the screw rod 49 is disengaged. The mounting shell 43 is separated from the mounting plate 48, and the mounting shell 43 is dismantled, and the mounting shell 43 drives the card block 45 to disengage from the card slot 47 through the second servo motor 44, thereby releasing the limitation on the position of the second damping disk 42. The staff drives the second damping disk 42 to move upward to complete the removal of the second damping disk 42. The staff drives the first damping disk 41 and the prism 39 to move upward so that the bottom end of the prism 39 is no longer located in the groove 38, thereby completing the removal of the first damping disk 41, and facilitating the replacement of the first damping disk 41 and the second damping disk 42.

[0037] Those skilled in the art should understand that the discussion of any of the above embodiments is merely illustrative and is not intended to imply that the scope of the present invention is limited to these examples. Under the concept of the present invention, the technical features in the above embodiments or different embodiments may be combined, the steps may be implemented in any order, and there are many other variations of the different aspects of the present invention as described above, which are not provided in detail for the sake of simplicity.

Claims

1. An electric valve actuator suitable for long-distance pipelines, comprising a valve body (1), characterized in that: The top of the valve body (1) is fixedly connected to an actuator box (2), a valve stem (3) is rotatably connected inside the valve body (1), the bottom end of the valve stem (3) is fixedly connected to a valve ball (4) matched with the valve body (1), the top end of the valve stem (3) is fixedly connected to a rotating disk (5) located in the actuator box (2), a movable block (6) and a fixed block (7) are respectively provided on both sides of the rotating disk (5), the rotating disk (5) is installed with a reset member matched with the movable block (6), the fixed block (7) and the rotating disk (5) are fixedly connected, the actuator box (2) is installed with a damping drive component for driving the rotating disk (5) to rotate, and the actuator box (2) is installed with a positioning locking structure for positioning the movable block (6) and the fixed block (7).

2. The electric valve actuator for long-distance pipeline according to claim 1 is characterized in that: The positioning locking structure comprises a fixed seat (9) and an adjusting seat (10) arranged above the rotating disk (5); the bottom of the fixed seat (9) is fixedly connected to an arc plate (8) adapted to the movable block (6); a plurality of first hydraulic telescopic rods (18) are fixedly installed on the execution box (2); and the telescopic ends of the first hydraulic telescopic rods (18) are fixedly connected to the arc plate (8); a first stop block (11) and a second stop block (12) are respectively arranged on both sides of the fixed block (7); the top of the first stop block (11) is fixedly connected to the bottom of the adjusting seat (10); the second stop block (12) is fixedly connected to the inner wall of the execution box (2); the execution box (2) is installed with a position adjustment mechanism for driving the adjusting seat (10) to move; and locking parts adapted to the rotating disk (5) are respectively arranged on the fixed seat (9) and the adjusting seat (10).

3. The electric valve actuator for long-distance pipeline according to claim 2 is characterized in that: The position adjustment mechanism comprises a support sleeve (13) arranged above the rotating disk (5), and the axis of the support sleeve (13) and the valve stem (3) are consistent, the outer rotating sleeve of the support sleeve (13) is provided with a support frame (14), the support frame (14) is fixedly connected to the inner wall of the execution box (2), the execution box (2) is equipped with a rotating unit for driving the support sleeve (13) to rotate, the adjustment seat (10) is provided with an avoidance hole (15), and the support sleeve (13) passes through the avoidance hole (15), the inner wall of the avoidance hole (15) is provided with two guide grooves (16), the outer wall of the support sleeve (13) is fixedly connected with two guide strips (17), and the guide strips (17) pass through the corresponding guide grooves (16), and the execution box (2) is equipped with a vertical mover adapted to the adjustment seat (10).

4. The electric valve actuator for long-distance pipeline according to claim 3 is characterized in that: The vertical mover comprises an arc-shaped bar (19) arranged in an execution box (2), a plurality of second hydraulic telescopic rods (20) are fixedly installed in the execution box (2), the telescopic ends of the second hydraulic telescopic rods (20) are fixedly connected to the arc-shaped bar (19), a slide groove (22) is provided on the inner wall of the arc-shaped bar (19), a support part (21) is fixedly connected to the top of the adjustment seat (10), and a slider (23) located in the slide groove (22) is fixedly installed in the support part (21).

5. The electric valve actuator for long-distance pipeline according to claim 3 is characterized in that: The rotating unit comprises a worm wheel (24) fixedly sleeved on the outside of the supporting sleeve (13); a worm (25) rotatably connected in the execution box (2) and meshing with the worm wheel (24); a first servo motor (26) is fixedly mounted on the execution box (2); and an output end of the first servo motor (26) is fixedly connected to the worm wheel (25).

6. The electric valve actuator for long-distance pipeline according to claim 2 is characterized in that: The locking member comprises a first fixed disk (27) respectively arranged above the fixed seat (9) and the adjusting seat (10); a positioning column (28) respectively penetrates the fixed seat (9) and the adjusting seat (10); the top of the positioning column (28) is fixedly connected to the bottom of the first fixed disk (27); the fixed seat (9) and the adjusting seat (10) are respectively connected to the corresponding first fixed disk (27) through a tension spring (29); and a first positioning hole (30) and a second positioning hole (31) respectively matched with the two positioning columns (28) are opened on the rotating disk (5).

7. The electric valve actuator for long-distance pipeline according to claim 1 is characterized in that: The reset member comprises a bottom plate (32) arranged below the movable block (6); the bottom plate (32) and the bottom of the rotating disk (5) are fixedly connected via a connecting plate (33); at least two guide columns (34) are fixedly connected to the bottom of the movable block (6); the bottom ends of the guide columns (34) penetrate the bottom plate (32); and the bottom ends of the guide columns (34) are fixedly connected to a second fixed disk (35) located below the bottom plate (32); and the movable block (6) and the bottom plate (32) are connected via a first compression spring (36).

8. The electric valve actuator for long-distance pipeline according to claim 3 is characterized in that: The damping drive assembly comprises a fixed column (37) fixedly mounted on the top of the rotating disk (5), and a support sleeve (13) is sleeved on the outside of the fixed column (37), the axis of the fixed column (37) and the support sleeve (13) are consistent, a groove (38) is opened on the top of the fixed column (37), a prism (39) is slidably arranged in the groove (38), a second compression spring (40) is arranged in the groove (38), two ends of the second compression spring (40) are respectively abutted against the bottom of the prism (39) and the bottom inner wall of the groove (38), a first damping disk (41) located above the execution box (2) is fixedly connected to the top of the prism (39), a second damping disk (42) is contacted on the top of the first damping disk (41), and a driver adapted to the second damping disk (42) is installed on the execution box (2).

9. The electric valve actuator for long-distance pipeline according to claim 8, characterized in that: The driver comprises a support block (46) fixedly mounted on the top of the second damping disk (42); a mounting shell (43) is provided on the top of the execution box (2); a disassembly component matched with the mounting shell (43) is installed on the execution box (2); the mounting shell (43) is a cavity structure with an opening at the bottom; the first damping disk (41) and the second damping disk (42) are both located in the mounting shell (43); a second servo motor (44) is fixedly mounted on the mounting shell (43); an output end of the second servo motor (44) is fixedly connected to a clamping block (45) located in the mounting shell (43); a clamping slot (47) matched with the clamping block (45) is provided on the top of the support block (46); and the clamping block (45) is located in the clamping slot (47).

10. The electric valve actuator for long-distance pipeline according to claim 9, characterized in that: The disassembly and assembly parts include a plurality of mounting plates (48) fixedly mounted on the outer wall of the mounting shell (43), a screw rod (49) passing through the mounting plate (48), the bottom end of the screw rod (49) being fixedly connected to the top of the execution box (2), a nut (50) being sleeved on the top of the screw rod (49), the bottom of the nut (50) being in contact with the top of the mounting plate (48), and the bottom of the mounting plate (48) being in contact with the top of the execution box (2).

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