A valve electric actuator suitable for long distance pipelines

Abstract

The application relates to the technical field of valves, in particular to a valve electric actuator suitable for long-distance pipelines, which comprises a valve body, the top of the valve body is fixedly connected with an execution box, a valve rod is rotationally connected in the valve body, the bottom end of the valve rod is fixedly connected with a valve ball matched with the valve body, the top end of the valve rod is fixedly connected with a rotating disc located in the execution box, the two sides of the rotating disc are respectively provided with a movable block and a fixed block, the rotating disc is provided with a reset piece matched with the movable block, the fixed block is fixedly connected with the rotating disc, the execution box is provided with a damping driving assembly for driving the rotating disc to rotate, and the execution box is provided with a positioning locking structure for positioning the positions of the movable block and the fixed block; when the damping driving assembly fails, the position of the valve rod can be locked through the positioning locking structure, so that the fluid conveying is not affected.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of valves, in particular to a valve electric actuator suitable for long-distance pipelines. BACKGROUND

[0002] The valve is used to open and close the pipeline, control the flow direction, adjust and control the parameters (temperature, pressure and flow) of the conveying medium. The valve is a control component in the fluid conveying system, which has the functions of cutting off, regulating, guiding flow, preventing backflow, stabilizing pressure, dividing flow or overflow pressure relief, etc.

[0003] The existing valve electric actuators are mostly driven by a motor to drive multiple gears to achieve transmission, drive the valve stem in the valve to rotate, and achieve the function of opening and closing the valve. However, it is worth thinking 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, the position of the valve ball and the valve stem is easily changed with the continuous conveying of the fluid, which affects the conveying of the fluid and has certain limitations.

[0004] Therefore, in order to solve the above problems, a more suitable related facility needs to appear. SUMMARY

[0005] Therefore, the purpose of the present application is to provide a valve electric actuator suitable for long-distance pipelines to solve the above problem that when the motor fails, the position of the valve ball and the valve stem is easily changed with the continuous conveying of the fluid.

[0006] In order to achieve the above purpose, the present application provides a valve electric actuator suitable for long-distance pipelines, which comprises a valve body, the top of the valve body is fixedly connected with an execution box, a valve stem is rotatably connected in the valve body, the bottom end of the valve stem is fixedly connected with a valve ball matched with the valve body, the top end of the valve stem is fixedly connected with a rotating disc located in the execution box, the two sides of the rotating disc are respectively provided with a movable block and a fixed block, the rotating disc is installed with a reset piece matched with the movable block, the fixed block is fixedly connected with the rotating disc, the execution box is installed with a damping drive assembly for driving the rotating disc to rotate, and the execution box is installed with a positioning locking structure for positioning the positions of the movable block and the fixed block.

[0007] Optionally, the positioning locking structure comprises a fixed seat and an adjusting seat arranged above the rotating disc, the bottom of the fixed seat is fixedly connected with an arc-shaped plate matched with 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 with the arc-shaped 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 with the bottom of the adjusting seat, the second stop block is fixedly connected with the inner wall of the execution box, the execution box is installed with a position adjusting mechanism for driving the adjusting seat to move, and the fixed seat and the adjusting seat are respectively provided with a locking piece matched with the rotating disc.

[0008] Optionally, the position adjusting mechanism comprises a supporting sleeve arranged above the rotating disc, the supporting sleeve is coaxial with the valve rod, a supporting frame is arranged on the outer part of the supporting sleeve, the supporting frame is fixedly connected with the inner wall of the executing box, the executing box is provided with a rotating unit for driving the supporting sleeve to rotate, the adjusting seat is provided with an avoiding hole, the supporting sleeve penetrates through the avoiding hole, two guide grooves are arranged on the inner wall of the avoiding hole, two guide strips are fixedly connected on the outer wall of the supporting sleeve and penetrate through the corresponding guide grooves, and the executing box is provided with a vertical mover matched with the adjusting seat.

[0009] Optionally, the vertical mover comprises an arc-shaped strip arranged in the executing box, the executing box is fixedly provided with a plurality of second hydraulic telescopic rods, the telescopic ends of the second hydraulic telescopic rods are fixedly connected with the arc-shaped strip, a sliding groove is arranged on the inner wall of the arc-shaped strip, the top of the adjusting seat is fixedly connected with a supporting part, and the supporting part is fixedly provided with a sliding block located in the sliding groove.

[0010] Optionally, the rotating unit comprises a worm wheel fixedly arranged on the outer part of the supporting sleeve, a worm is rotatably connected in the executing box and engaged with the worm wheel, the executing box is fixedly provided with a first servo motor, and the output end of the first servo motor is fixedly connected with the worm.

[0011] Optionally, the locking member comprises a first fixed disc arranged above the fixed seat and the adjusting seat respectively, the fixed seat and the adjusting seat are respectively penetrated by a positioning column, the top end of the positioning column is fixedly connected with the bottom of the first fixed disc, the fixed seat and the adjusting seat are respectively connected with the corresponding first fixed disc through the tensile spring, and the rotating disc is provided with a first positioning hole and a second positioning hole matched with the two positioning columns respectively.

[0012] Optionally, the reset member comprises a bottom plate arranged below the movable block, the bottom plate and the bottom of the rotating disc are fixedly connected through a connecting plate, the bottom of the movable block is fixedly connected with at least two guide columns, the bottom end of the guide column penetrates through the bottom plate, the bottom end of the guide column is fixedly connected with a second fixed disc located below the bottom plate, and the movable block and the bottom plate are connected through a first compression spring.

[0013] Optionally, the damping driving assembly comprises a fixed column fixedly installed on the top of the rotating disc, the supporting sleeve is arranged on the outer part of the fixed column, the fixed column and the supporting sleeve are coaxial, a recess is arranged on the top of the fixed column, a prism is slidably arranged in the recess, a second compression spring is arranged in the recess, the two ends of the second compression spring are respectively in abutment with the bottom of the prism and the inner wall of the bottom of the recess, the top of the prism is fixedly connected with a first damping disc located above the executing box, the top of the first damping disc is in contact with a second damping disc, and the executing box is provided with a driver matched with the second damping disc.

[0014] Optionally, the driver comprises a support block fixedly installed on the top of the second damping disc, the top of the execution box is in contact with a mounting shell, the execution box is provided with a detachable member matched with the mounting shell, the mounting shell is a cavity structure with an open bottom, and the first damping disc and the second damping disc are located in the mounting shell, the mounting shell is fixedly installed with a second servo motor, the output end of the second servo motor is fixedly connected with a clamping block located in the mounting shell, and the top of the support block is provided with a clamping groove matched with the clamping block, and the clamping block is located in the clamping groove.

[0015] Optionally, the detachable member comprises a plurality of mounting plates fixedly installed on the outer wall of the mounting shell, a lead screw is penetrated through the mounting plate, the bottom end of the lead screw is fixedly connected with the top of the execution box, the top end of the lead screw is sleeved with a nut, 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 application are as follows: the damping drive assembly drives the rotating disc to rotate, the rotating disc drives the valve ball to rotate through the valve rod, and the rotating disc drives the movable block and the fixed block to rotate synchronously, the positions of the movable block, the fixed block and the rotating disc are positioned through the positioning locking structure when the rotating disc rotates to the preset position, so that the rotating disc, the valve rod and the valve ball are locked relative to the valve body, the damping drive assembly drives the rotating disc to rotate to the preset position, and when the damping drive assembly fails, the position of the valve rod can be locked through the positioning locking structure, so that the fluid conveying is not affected. BRIEF DESCRIPTION OF DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the present application or prior art, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings in the following description are only a part of the present application, and other drawings can also be obtained by those skilled in the art without creative labor.

[0018] Figure 1 It is a whole structure schematic view of the embodiment of the present application;

[0019] Figure 2 It is a structure schematic view of the inside of the execution box of the embodiment of the present application;

[0020] Figure 3 It is a structure schematic view of the worm installation position of the embodiment of the present application;

[0021] Figure 4 It is a structure schematic view of the arc-shaped plate of the embodiment of the present application;

[0022] Figure 5 It is a structure schematic view of the adjusting seat of the embodiment of the present application;

[0023] Figure 6 It is a structure schematic view of the rotating disc of the embodiment of the present application;

[0024] Figure 7 Figure 1 is a structural schematic diagram of a reset member of an embodiment of the present application;

[0025] Figure 8 Figure 2 is a structural schematic diagram of a fixed column, a first damping disc and a second damping disc of an embodiment of the present application.

[0026] In the figure, the following are marked:

[0027] 1, valve body; 2, actuator box; 3, valve rod; 4, valve ball; 5, rotary disc; 6, movable block; 7, fixed block; 8, arc plate; 9, fixed seat; 10, adjusting seat; 11, first stop block; 12, second stop block; 13, support sleeve; 14, support frame; 15, avoiding hole; 16, guide groove; 17, guide strip; 18, first hydraulic telescopic rod; 19, arc strip; 20, second hydraulic telescopic rod; 21, support part; 22, sliding groove; 23, sliding block; 24, worm wheel; 25, worm; 26, first servo motor; 27, first fixed disc; 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 disc; 36, first compression spring; 37, fixed column; 38, groove; 39, prism; 40, second compression spring; 41, first damping disc; 42, second damping disc; 43, mounting shell; 44, second servo motor; 45, clamping block; 46, support block; 47, clamping groove; 48, mounting plate; 49, screw rod; 50, nut. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical scheme and advantages of the present application more clear, the present application is further described in detail below in combination with specific embodiments.

[0029] The present embodiment proposes an electric actuator for a valve for long-distance pipelines, as shown in Figure 1 and Figure 2As shown, including valve body 1, the top fixedly connected with the valve body 1, 2, valve body 1 in the rotating connection with the valve stem 3, the bottom end of valve stem 3 fixedly connected with the valve ball 4 adapted to valve body 1, the top end of valve stem 3 fixedly connected with the rotary disc 5 located in the execution box 2, the two sides of rotary disc 5 are respectively provided with movable block 6 and fixed block 7, rotary disc 5 is installed with reset piece adapted to movable block 6, fixed block 7 and rotary disc 5 are fixedly connected, the execution box 2 is installed for driving rotary disc 5 rotation damping drive assembly, the execution box 2 is installed for positioning movable block 6 and fixed block 7 position of positioning lock structure, through damping drive assembly drive rotary disc 5 rotation, rotary disc 5 through valve stem 3 drive valve ball 4 rotation, and rotary disc 5 drive movable block 6 and fixed block 7 synchronous rotation, when rotary disc 5 rotates to the preset position, through the positioning lock structure position of movable block 6, fixed block 7 and rotary disc 5, to make rotary disc 5, valve stem 3 and valve ball 4 relative to valve body 1 lock, damping drive assembly drive rotary disc 5 rotation to the preset position, when damping drive assembly failure, the position of valve stem 3 can be locked through positioning lock structure, avoid affecting the delivery of fluid.

[0030] In some optional embodiments, such as Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 and Figure 6As shown, the positioning locking structure comprises a fixed seat 9 and an adjusting seat 10 arranged above the rotating disc 5, the bottom of the fixed seat 9 is fixedly connected with an arc-shaped plate 8 matched with 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 with the arc-shaped plate 8, 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 with the bottom of the adjusting seat 10, the second stop block 12 is fixedly connected with the inner wall of the execution box 2, the execution box 2 is installed with a position adjusting mechanism for driving the adjusting seat 10 to move, the fixed seat 9 and the adjusting seat 10 are respectively provided with a locking piece matched with the rotating disc 5, the position adjusting mechanism comprises a support sleeve 13 arranged above the rotating disc 5, and the support sleeve 13 is consistent with the axis of the valve rod 3, a support frame 14 is rotatably sleeved on the outside of the support sleeve 13, the support frame 14 is fixedly connected with the inner wall of the execution box 2, the execution box 2 is installed with a rotating unit for driving the support sleeve 13 to rotate, the adjusting seat 10 is provided with an avoiding hole 15, and the support sleeve 13 penetrates through the avoiding hole 15, two guide grooves 16 are arranged on the inner wall of the avoiding hole 15, two guide strips 17 are fixedly connected on the outer wall of the support sleeve 13, and the guide strips 17 penetrate through the corresponding guide grooves 16, the execution box 2 is installed with a vertical mover matched with the adjusting seat 10, the vertical mover comprises an arc-shaped 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 with the arc-shaped strip 19, a sliding groove 22 is arranged on the inner wall of the arc-shaped strip 19, the top of the adjusting seat 10 is fixedly connected with a support part 21, the support part 21 is fixedly installed with a sliding block 23 located in the sliding groove 22, the rotating unit comprises a worm wheel 24 fixedly sleeved on the outside of the support sleeve 13, a worm 25 is rotatably connected in the execution box 2 and engaged with the worm wheel 24, 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 with the worm 25, the locking piece comprises a first fixed disc 27 arranged above the fixed seat 9 and the adjusting seat 10 respectively, a positioning column 28 penetrates through the fixed seat 9 and the adjusting seat 10 respectively, the top end of the positioning column 28 is fixedly connected with the bottom of the first fixed disc 27, the fixed seat 9 and the adjusting seat 10 are connected with the corresponding first fixed disc 27 through a tensile spring 29 respectively, the rotating disc 5 is provided with a first positioning hole 30 and a second positioning hole 31 matched with the two positioning columns 28 respectively;

[0031] The arc-shaped 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. Through the design of the positioning column 28 and the first positioning hole 30, the rotating disc 5 and the valve rod 3 are fixed relative to the execution box 2 and the valve body 1. When it is necessary to adjust the position of the valve rod 3 and the valve ball 4, the first servo motor 26 drives the worm 25 to rotate, the worm 25 drives the support sleeve 13 to rotate through the worm gear 24, the support sleeve 13 drives the adjusting seat 10 to rotate synchronously through the guide strip 17, the position of the positioning column 28 on the adjusting seat 10 and the first stop block 11 is changed, and the adjusting seat 10 drives the sliding block 23 to slide in the sliding groove 22 through the support part 21. When the first stop block 11 moves to the preset position, the arc-shaped strip 19 is driven to move downward by the second hydraulic telescopic rod 20, the arc-shaped strip 19 drives the adjusting seat 10 and the first stop block 11 to move downward through the sliding block 23 and the support part 21, the adjusting 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 adjusting seat 10 is in contact with the top of the rotating disc 5. With the continuous downward movement of the adjusting seat 10, the adjusting seat 10 slides relative to the positioning column 28, the stretching spring 29 located above the adjusting seat 10 is in a stretching state, and the arc-shaped plate 8 and the fixed seat 9 are driven to move upward by the first hydraulic telescopic rod 18, so that the bottom end of the positioning column 28 on the fixed seat 9 is separated from the first positioning hole 30, the limitation of the position of the rotating disc 5 is removed, and the bottom of the arc-shaped plate 8 is higher than the top of the movable block 6. At this time, the damping driving assembly drives the rotating disc 5 to rotate, the bottom end of the positioning column 28 on the adjusting seat 10 slides relative to the top of the rotating disc 5, the movable block 6 is rotated to the lower side of the arc-shaped plate 8, when the fixed block 7 and the first stop block 11 are in contact, the positioning column 28 on the adjusting seat 10 moves to the upper side of the second positioning hole 31, and the first fixed disc 27 and the positioning column 28 are driven to move downward by the stretching spring 29 above the adjusting seat 10, so that the bottom end of the positioning column 28 is inserted into the second positioning hole 31. Thus, the rotating disc 5 can be automatically stopped after rotating to the preset position, and the rotating disc 5 is locked and fixed relative to the execution box 2 and the valve body 1. When it is necessary to close the valve, the arc-shaped plate 8 is driven to move downward to the initial height by the first hydraulic telescopic rod 18, and the movable block 6 is driven to move downward by the arc-shaped plate 8, the bottom end of the positioning column 28 on the fixed seat 9 is in contact with the top of the rotating disc 5, and the arc-shaped strip 19 is driven to move upward to the initial height by the second hydraulic telescopic rod 20, so that the bottom end of the positioning column 28 on the adjusting seat 10 is separated from the second positioning hole 31, and the limitation of the position of the rotating disc 5 is removed. The rotating disc 5 is reversely rotated by the damping driving assembly, the rotating disc 5 drives the fixed block 7 to reversely rotate to the initial position, the fixed block 7 and the second stop block 12 are in contact, and at this time, the positioning column 28 on the fixed seat 9 moves to the upper side of the first positioning hole 30. The first fixed disc 27 and the positioning column 28 are driven to move downward by the stretching spring 29 above the fixed seat 9, so that the bottom end of the positioning column 28 is inserted into the first positioning hole 30.And the top of the movable block 6 is no longer in contact with the bottom of the arc-shaped plate 8, the reset member drives the movable block 6 to move up to the initial height, that is, the position of the movable block 6, the fixed block 7 and the rotating disc 5 is limited again, so that the rotating disc 5 is locked relative to the valve body 1. When the damping drive assembly drives the rotating disc 5 to rotate to the preset position, the damping drive assembly fails, and the position of the valve stem 3 can still be locked by the positioning and locking structure.

[0032] In some optional embodiments, as shown in Figure 1 、 Figure 2 、 Figure 3 、 Figure 6 、 Figure 7 and Figure 8 , the reset member includes a bottom plate 32 arranged below the movable block 6, the bottom plate 32 and the bottom of the rotating disc 5 are fixedly connected through a connecting plate 33, the bottom of the movable block 6 is fixedly connected with at least two guide columns 34, the bottom ends of the guide columns 34 penetrate through the bottom plate 32, and the bottom ends of the guide columns 34 are fixedly connected with a second fixed disc 35 below the bottom plate 32, the movable block 6 and the bottom plate 32 are connected through a first compression spring 36, the damping drive assembly includes a fixed column 37 fixedly installed on the top of the rotating disc 5, and the support sleeve 13 is sleeved on the outside of the fixed column 37, the shaft centers of the fixed column 37 and the support sleeve 13 are consistent, a groove 38 is opened at 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, and the two ends of the second compression spring 40 are respectively in abutment with the bottom of the prism 39 and the inner wall of the bottom of the groove 38. The top of the prism 39 is fixedly connected with a first damping disc 41 above the execution box 2, the top of the first damping disc 41 is in contact with a second damping disc 42, the execution box 2 is installed with a drive matched with the second damping disc 42, the drive includes a support block 46 fixedly installed on the top of the second damping disc 42, the top of the execution box 2 is in contact with a mounting shell 43, the execution box 2 is installed with a dismounting member matched with the mounting shell 43, the mounting shell 43 is a cavity structure with an open bottom, and the first damping disc 41 and the second damping disc 42 are both located in the mounting shell 43. The mounting shell 43 is fixedly installed with a second servo motor 44, the output end of the second servo motor 44 is fixedly connected with a clamping block 45 located in the mounting shell 43, the top of the support block 46 is provided with a clamping groove 47 matched with the clamping block 45, and the clamping block 45 is located in the clamping groove 47. The dismounting member includes a plurality of mounting plates 48 fixedly installed on the outer wall of the mounting shell 43, a lead screw 49 penetrates through the mounting plate 48, the bottom end of the lead screw 49 is fixedly connected with the top of the execution box 2, a nut 50 is sleeved on the top end of the lead screw 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, applying an upward thrust to the movable block 6 to make the top of the second fixed plate 35 and the bottom of the base plate 32 fit tightly together. When the arc plate 8 presses the movable block 6 downward, the movable block 6, guide post 34, and second fixed plate 35 move downward relative to the base plate 32, and the length of the first compression spring 36 shortens. 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 upward to the initial height, and the second fixed plate 35... The top of plate 5 contacts the bottom of plate 32. The second compression spring 40 is initially compressed. The second compression spring 40 applies a thrust to the prism 39 and the first damping disk 41, so that the first damping disk 41 and the second damping disk 42 are tightly pressed together. The second servo motor 44 drives the locking block 45, the support block 46 and the second damping disk 42 to rotate. The second damping disk 42 drives the first damping disk 41, the prism 39 and the fixed column 37 to rotate synchronously through friction. The fixed column 37 can then drive the rotating disk 5, the movable block 6 and the... When the fixed block 7 rotates and 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 can no longer drive the first damping disc 41 to rotate synchronously through friction. This causes the rotating disc 5 to automatically stop after rotating to a preset position. The operator then drives the nut 50 to rotate, causing it to disengage from the lead screw 49, thus releasing the restriction on the positions of the mounting plate 48 and the mounting shell 43. The operator then drives the mounting shell 43 and the mounting plate 48 upwards, causing the lead screw 49 to disengage. After removing the mounting plate 48, the mounting shell 43 is removed. The mounting shell 43 is driven by the second servo motor 44 to disengage the locking block 45 from the slot 47, thus releasing the restriction on the position of the second damping disc 42. The operator drives the second damping disc 42 to move upward, thereby removing the second damping disc 42. The operator then drives the first damping disc 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 removing the first damping disc 41 and facilitating the replacement of the first damping disc 41 and the second damping disc 42.

[0034] Working principle: The rotating disk 5 is driven to rotate by the damping drive assembly. The rotating disk 5 drives the valve ball 4 to rotate through the valve stem 3. The rotating disk 5 also drives the movable block 6 and the fixed block 7 to rotate synchronously. When the rotating disk 5 rotates to the preset position, the position of the movable block 6, the fixed block 7 and the rotating disk 5 is 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.

[0035] The arc-shaped 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. Through the design of the positioning column 28 and the first positioning hole 30, the rotating disc 5 and the valve rod 3 are fixed relative to the execution box 2 and the valve body 1. When it is necessary to adjust the position of the valve rod 3 and the valve ball 4, the first servo motor 26 drives the worm 25 to rotate, the worm 25 drives the support sleeve 13 to rotate through the worm gear 24, the support sleeve 13 drives the adjusting seat 10 to rotate synchronously through the guide strip 17, the position of the positioning column 28 on the adjusting seat 10 and the first stop block 11 is changed, and the adjusting seat 10 drives the sliding block 23 to slide in the sliding groove 22 through the support part 21. When the first stop block 11 moves to the preset position, the arc-shaped strip 19 is driven to move downward by the second hydraulic telescopic rod 20, the arc-shaped strip 19 drives the adjusting seat 10 and the first stop block 11 to move downward through the sliding block 23 and the support part 21, the adjusting 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 adjusting seat 10 is in contact with the top of the rotating disc 5. With the continuous downward movement of the adjusting seat 10, the adjusting seat 10 slides relative to the positioning column 28, the stretching spring 29 located above the adjusting seat 10 is in a stretching state, and the arc-shaped plate 8 and the fixed seat 9 are driven to move upward by the first hydraulic telescopic rod 18, so that the bottom end of the positioning column 28 on the fixed seat 9 is separated from the first positioning hole 30, the limitation of the position of the rotating disc 5 is removed, and the bottom of the arc-shaped plate 8 is higher than the top of the movable block 6. At this time, the damping driving assembly drives the rotating disc 5 to rotate, the bottom end of the positioning column 28 on the adjusting seat 10 slides relative to the top of the rotating disc 5, the movable block 6 is rotated to the lower side of the arc-shaped plate 8, when the fixed block 7 and the first stop block 11 are in contact, the positioning column 28 on the adjusting seat 10 moves to the upper side of the second positioning hole 31, and the first fixed disc 27 and the positioning column 28 are driven to move downward by the stretching spring 29 above the adjusting seat 10, so that the bottom end of the positioning column 28 is inserted into the second positioning hole 31. Thus, the rotating disc 5 can be automatically stopped after rotating to the preset position, and the rotating disc 5 is locked and fixed relative to the execution box 2 and the valve body 1. When it is necessary to close the valve, the arc-shaped plate 8 is driven to move downward to the initial height by the first hydraulic telescopic rod 18, and the movable block 6 is driven to move downward by the arc-shaped plate 8, the bottom end of the positioning column 28 on the fixed seat 9 is in contact with the top of the rotating disc 5, and the arc-shaped strip 19 is driven to move upward to the initial height by the second hydraulic telescopic rod 20, so that the bottom end of the positioning column 28 on the adjusting seat 10 is separated from the second positioning hole 31, and the limitation of the position of the rotating disc 5 is removed. The rotating disc 5 is reversely rotated by the damping driving assembly, the rotating disc 5 drives the fixed block 7 to reversely rotate to the initial position, the fixed block 7 and the second stop block 12 are in contact, and at this time, the positioning column 28 on the fixed seat 9 moves to the upper side of the first positioning hole 30. The first fixed disc 27 and the positioning column 28 are driven to move downward by the stretching spring 29 above the fixed seat 9, so that the bottom end of the positioning column 28 is inserted into the first positioning hole 30.And the top of the movable block 6 is no longer in contact with the bottom of the arc-shaped plate 8, the reset member drives the movable block 6 to move up to the initial height, that is, the position of the movable block 6, the fixed block 7 and the rotating disc 5 is limited again, so that the rotating disc 5 is locked relative to the valve body 1, when the damping drive assembly drives the rotating disc 5 to rotate to the preset position, the damping drive assembly fails, the position of the valve stem 3 can still be locked by the positioning and locking structure;

[0036] The first compression spring 36 is in a compressed state in the initial state, and the first compression spring 36 applies an upward pushing force to the movable block 6, so that the top of the second fixed disc 35 and the bottom of the bottom plate 32 are tightly attached, when the arc-shaped plate 8 presses the movable block 6 to move down, the movable block 6, the guide column 34 and the second fixed disc 35 move down relative to the bottom plate 32, 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-shaped plate 8, the first compression spring 36 drives the movable block 6 to move up to the initial height, and the top of the second fixed disc 35 and the bottom of the bottom plate 32 are in contact, the second compression spring 40 is in a compressed state in the initial state, the second compression spring 40 applies a pushing force 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 clamping block 45, the supporting 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 friction, the fixed column 37 drives the rotating disc 5, the movable block 6 and the fixed block 7 to rotate, when the fixed block 7 is in contact with the second stop block 12 or the first stop block 11, with the continuous rotation of the second damping disc 42, the second damping disc 42 cannot drive the first damping disc 41 to rotate synchronously through friction, so that the rotating disc 5 stops automatically after rotating to the preset position, the worker drives the nut 50 to rotate, so that the nut 50 is separated from the lead screw 49, the position of the mounting plate 48 and the mounting shell 43 is released, the worker drives the mounting shell 43 and the mounting plate 48 to move up, so that the lead screw 49 is separated from the mounting plate 48, the mounting shell 43 is removed, and the mounting shell 43 drives the clamping block 45 to separate from the clamping groove 47 through the second servo motor 44, the position of the second damping disc 42 is released, the worker drives the second damping disc 42 to move up, so that the second damping disc 42 is removed, the worker drives the first damping disc 41 and the prism 39 to move up, so that the bottom end of the prism 39 is no longer located in the groove 38, so that the first damping disc 41 is removed, and the first damping disc 41 and the second damping disc 42 are replaced.

[0037] Those skilled in the art should understand that the above discussion of any embodiment is only intended to be exemplary in nature and is not intended to suggest that the present application is limited to these examples; under the concept of the present application, the above embodiments or technical features among different embodiments can be combined, steps can be implemented in any order, and there are many other variations of different aspects of the present application as described above, which are not provided in details for the sake of brevity.

Claims

1. A valve electric actuator suitable for long-distance pipelines, comprising a valve body (1), characterized in that, An actuator box (2) is fixedly connected to the top of the valve body (1). A valve stem (3) is rotatably connected inside the valve body (1). A valve ball (4) adapted to the valve body (1) is fixedly connected to the bottom end of the valve stem (3). A rotating disk (5) located inside the actuator box (2) is fixedly connected to the top end of the valve stem (3). Movable blocks (6) and fixed blocks (7) are respectively provided on both sides of the rotating disk (5). A reset component adapted to the movable block (6) is installed on the rotating disk (5). The fixed block (7) and the rotating disk (5) are fixedly connected. The actuator box (2) is equipped with a resistor for driving the rotating disk (5) to rotate. The drive assembly, the actuator box (2) is equipped with a positioning locking structure for positioning the movable block (6) and the fixed block (7); the positioning locking structure includes a fixed seat (9) and an adjusting seat (10) set 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), the actuator 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. The top of the first stop block (11) and the bottom of the adjusting seat (10) are fixedly connected, and the second stop block (12) and the inner wall of the execution box (2) are fixedly connected. The execution box (2) is equipped with a position adjustment mechanism for driving the adjusting seat (10) to move. The fixed seat (9) and the adjusting seat (10) are respectively provided with locking parts adapted to the rotating disk (5). The position adjustment mechanism includes a support sleeve (13) set above the rotating disk (5), and the axis of the support sleeve (13) and the valve stem (3) are aligned. The support sleeve (13) is rotatably fitted with a support frame on its outer side. (14) The inner wall of the support frame (14) and the execution box (2) are fixedly connected. 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 a clearance hole (15), and the support sleeve (13) passes through the clearance hole (15). Two guide grooves (16) are provided on the inner wall of the clearance hole (15). Two guide strips (17) are fixedly connected on the outer wall of the support sleeve (13), and the guide strips (17) pass through the corresponding guide grooves (16). The execution box (2) is equipped with a vertical mover that is compatible with the adjustment seat (10).

2. The valve electric actuator suitable for long-distance pipelines according to claim 1, characterized in that, The vertical mover includes an arc-shaped bar (19) set in the execution box (2). The execution box (2) is fixedly installed with several second hydraulic telescopic rods (20). The telescopic ends of the second hydraulic telescopic rods (20) are fixedly connected to the arc-shaped bar (19). A groove (22) is opened 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). A slider (23) located in the groove (22) is fixedly installed in the support part (21).

3. The valve electric actuator suitable for long-distance pipelines according to claim 1, characterized in that, The rotating unit includes a worm gear (24) fixedly sleeved outside the support sleeve (13), a worm (25) rotatably connected inside the execution box (2) and meshing with the worm gear (24), and a first servo motor (26) fixedly installed in the execution box (2), and the output end of the first servo motor (26) and the worm (25) are fixedly connected.

4. The valve electric actuator suitable for long-distance pipelines according to claim 1, characterized in that, The locking component includes a first fixed plate (27) respectively disposed above the fixed base (9) and the adjusting base (10). The fixed base (9) and the adjusting base (10) are respectively provided with positioning pins (28). The top of the positioning pins (28) and the bottom of the first fixed plate (27) are fixedly connected. The fixed base (9) and the adjusting base (10) are respectively connected to the corresponding first fixed plate (27) by tension springs (29). The rotating plate (5) is provided with a first positioning hole (30) and a second positioning hole (31) respectively adapted to the two positioning pins (28).

5. The electric valve actuator suitable for long-distance pipelines according to claim 1, characterized in that, The reset component includes a base plate (32) disposed below the movable block (6). The bottom of the base plate (32) and the rotating disk (5) are fixedly connected by a connecting plate (33). At least two guide posts (34) are fixedly connected to the bottom of the movable block (6). The bottom end of the guide post (34) penetrates the base plate (32), and the bottom end of the guide post (34) is fixedly connected to a second fixed disk (35) located below the base plate (32). The movable block (6) and the base plate (32) are connected by a first compression spring (36).

6. The valve electric actuator suitable for long-distance pipelines according to claim 1, characterized in that, The damping drive assembly includes a fixed column (37) fixedly installed on the top of the rotating disk (5), and a support sleeve (13) sleeved on the outside of the fixed column (37). The fixed column (37) and the support sleeve (13) are aligned. A groove (38) is provided on the top of the fixed column (37). A prism (39) is slidably provided in the groove (38). A second compression spring (40) is provided in the groove (38). The two ends of the second compression spring (40) abut against the bottom of the prism (39) and the bottom inner wall of the groove (38), respectively. 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). A driver adapted to the second damping disk (42) is installed in the execution box (2).

7. The valve electric actuator suitable for long-distance pipelines according to claim 6, characterized in that, The driver includes a support block (46) fixedly installed on the top of the second damping disc (42). The top of the actuator (2) is in contact with a mounting shell (43). The actuator (2) is equipped with a disassembly and assembly part that is compatible with the mounting shell (43). The mounting shell (43) is a cavity structure with an open bottom. The first damping disc (41) and the second damping disc (42) are both located inside the mounting shell (43). The mounting shell (43) is fixedly installed with a second servo motor (44). The output end of the second servo motor (44) is fixedly connected to a locking block (45) located inside the mounting shell (43). The top of the support block (46) is provided with a slot (47) that is compatible with the locking block (45), and the locking block (45) is located inside the slot (47).

8. The valve electric actuator suitable for long-distance pipelines according to claim 7, characterized in that, The assembly / disassembly assembly includes several mounting plates (48) fixedly installed on the outer wall of the mounting housing (43). A lead screw (49) passes through the mounting plate (48). The bottom end of the lead screw (49) is fixedly connected to the top of the execution box (2). A nut (50) is sleeved on the top end of the lead screw (49). The bottom of the nut (50) is in contact with the top of the mounting plate (48). The bottom of the mounting plate (48) is in contact with the top of the execution box (2).

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