A fast-adjustable electric actuator and a debugging method thereof

Abstract

The present invention relates to the technical field of valve actuators, and specifically to an electric actuator that can be quickly debugged and a debugging method thereof; the actuator comprises a valve and a cylinder body connected to the valve, and also comprises a No. 1 worm gear, wherein the No. 1 worm gear is fixedly connected to the valve; a pointer fixedly connected to the valve is arranged at one end of the cylinder body away from the valve; a No. 1 worm gear meshing with the No. 1 worm gear is arranged on one side of the No. 1 worm gear; the present invention provides a limiting unit so that the No. 2 worm gear in the limiting unit can drive the No. 2 worm gear to rotate, and since the blocking block installed on the surface of the No. 2 worm gear can block and limit the No. 1 worm gear, the opening and closing angle of the valve driven by the No. 1 worm gear is limited by the No. 2 worm gear, and the preset opening and closing range can be adjusted by controlling the rotation angle of the No. 2 worm gear, thereby avoiding the valve from working only within the preset opening and closing range, thereby enabling the present invention to adapt to various working condition changes encountered in actual operation, thereby improving the practicality of the present invention.

Description

Technical Field

[0001] The invention relates to the technical field of valve actuators, in particular to an electric actuator capable of rapid debugging and a debugging method thereof. Background Art

[0002] Actuators are control mechanisms used to control the opening and closing of valves. They are divided into three types according to energy supply: pneumatic, electric, and hydraulic. Electric actuators are more widely used because they do not require additional pneumatic or hydraulic systems. They avoid the leakage of compressed air or fluids that occurs in pneumatic or hydraulic actuators, and reduce the complexity and failure points introduced by intermediate conversion links. In addition, electric actuators are also one of the core equipment for long-distance natural gas pipelines. In remote and difficult areas, natural gas pipelines often span hundreds or even thousands of kilometers. In this regard, the use of electric actuators can quickly respond to remote control signals to ensure rapid operation of valves in emergency situations.

[0003] In this regard, technical solutions for electric actuators that can be quickly debugged and methods of using the same have also appeared in the prior art. For example, a Chinese patent with publication number CN117212531B discloses an electric actuator that can be quickly debugged and methods of using the same, including a valve, a cylinder body, a spindle core body, a valve input assembly and a stopper. The valve is connected to the cylinder body, the spindle core body is arranged in the cylinder body, the spindle core body includes a direct drive assembly and a magnetic core, the direct drive assembly is used to provide electromagnetic force to control the magnetic core to make linear reciprocating motion, the valve input assembly is arranged in the cylinder body and connected to the valve, the valve input assembly includes a drive crank and an input disk pair, the input disk pair is connected to the valve, the drive crank is used to connect the magnetic core and the input disk pair, when the magnetic core moves, the drive crank drives the input disk pair to rotate to control the valve to open or close, the stopper includes a core body limit assembly and a disk pair limit assembly, the core body limit assembly is used to limit the position of the magnetic core, and the disk pair limit assembly is used to limit the rotation of the input disk pair. It has the effects of simple structure, rapid execution response and easy and quick debugging;

[0004] This technical solution provides electromagnetic force to drive the magnetic core to reciprocate in a straight line direction through the direct-acting drive assembly in the spindle core body, and drives the input disk pair to rotate by driving the crank when the magnetic core moves in a straight line, thereby quickly driving the valve to open or close. The direct-acting drive assembly enables the magnetic core to respond quickly to movement, thereby quickly controlling the valve to open or close, and accurately limits the position of the magnetic core under the action of the limiter, and at the same time limits the input disk pair, so that the valve remains in the corresponding position state;

[0005] However, although the core limit assembly provided in the technical solution can limit the opening and closing angle of the valve, the installation position of the core limit assembly is fixed. Since the opening and closing angle of the valve is limited by the core limit assembly, that is, the opening and closing angle of the valve is also fixed, the valve can only work within a preset opening and closing range, and the preset opening and closing range cannot adapt to the various working conditions encountered in actual operation. For example, when the pressure of natural gas in the pipeline changes due to seasonal demand, the electric opening and closing angle of the valve needs to be adjusted according to demand, which causes the fixed core limit assembly to hinder the actuator from adjusting the opening and closing angle.

[0006] In view of this, in order to overcome the above technical problems, the present invention proposes an electric actuator that can be quickly debugged and a debugging method thereof, which solves the above technical problems. Summary of the invention

[0007] In order to make up for the deficiencies of the prior art, the present invention proposes an electric actuator that can be quickly debugged and a debugging method thereof. The present invention sets a limit unit so that the No. 2 worm in the limit unit can drive the No. 2 worm wheel to rotate. Since the blocking block installed on the surface of the No. 2 worm wheel can block and limit the No. 1 worm wheel, the opening and closing angle of the valve driven by the No. 1 worm wheel is limited by the No. 2 worm wheel. By controlling the rotation angle of the No. 2 worm wheel, the preset opening and closing range can be adjusted, thereby preventing the valve from only working within the preset opening and closing range. The present invention can adapt to various working condition changes encountered in actual operation, thereby improving the practicality of the present invention.

[0008] The technical solution adopted by the present invention to solve the technical problem is: the electric actuator capable of rapid debugging described in the present invention comprises a valve and a cylinder connected to the valve, and also comprises:

[0009] A No. 1 worm wheel, the No. 1 worm wheel is fixedly connected to the valve; a pointer fixedly connected to the valve is provided at one end of the cylinder body away from the valve; a No. 1 worm screw meshing with the No. 1 worm wheel is provided on one side of the No. 1 worm wheel; the No. 1 worm screw is rotatably connected to the inner wall of the cylinder body; a transmission shaft is provided above the No. 1 worm screw; the transmission shaft is slidably connected to the No. 1 worm screw; a screw is provided above the No. 1 worm wheel; the screw screw is connected to the cylinder body in a spiral transmission; a hand wheel is fixedly connected to the upper end of the screw screw; the screw screw and the transmission shaft are connected in a belt transmission through a transmission belt;

[0010] A bevel gear ring, the bevel gear ring is fixedly mounted on the surface of the screw; a drive motor is mounted on one side of the cylinder body; the output shaft of the drive motor is fixedly connected to the bevel gear shaft; the bevel gear ring is meshed with the bevel gear shaft; a mounting rod is slidably connected to the lower end of the screw; the mounting rod and the transmission shaft are connected by a transmission belt;

[0011] A limiting unit, which is installed inside the cylinder body; the limiting unit is used to limit the position of the No. 1 worm wheel; the limiting unit includes a No. 2 worm wheel, which is rotatably connected to the inner wall of the cylinder body; a blocking groove is provided on the side of the No. 2 worm wheel close to the No. 1 worm wheel; a blocking block is connected in a sliding seal in the blocking groove; the blocking block is fixedly connected to the bottom of the blocking groove by a connecting spring; an electromagnetic sheet is embedded in the bottom of the blocking groove; a slot matching the blocking block is provided on the side of the No. 1 worm wheel close to the No. 2 worm wheel; a No. 2 worm gear meshing with the No. 2 worm gear is arranged above the No. 2 worm gear; the No. 2 worm gear is connected to the mounting rod by a clutchable transmission unit;

[0012] A feedback unit is installed inside the cylinder body and is used to monitor the position of the valve.

[0013] Preferably, the transmission unit includes a connecting rod and a driving rod; a groove is provided at the lower end of the mounting rod; the connecting rod is slidingly and sealingly connected in the groove; the driving rod is rotationally connected to the cylinder body; a slot matching the driving rod is provided at the lower end of the connecting rod; the driving rod is located directly below the slot; the driving rod is connected to the No. 2 worm gear through a bevel gear set.

[0014] Preferably, the transmission unit also includes a push plate; an oil storage tank is provided on one side of the cylinder body; the push plate is slidably connected in the oil storage tank; a screw rod is rotatably connected in the oil storage tank and is helically connected to the push plate; a servo motor is fixedly installed on one side of the cylinder body; a spur gear set is provided between the servo motor and the screw rod; the servo motor drives the screw rod to rotate through the spur gear set; an airbag is sleeved on the surface of the screw rod; an annular groove connected to the groove is provided on the surface of the mounting rod; an airway is provided inside the cylinder body; one end of the airway is connected to the airbag, and the other end is connected to the annular groove.

[0015] Preferably, the feedback unit comprises a pressure sensor, which is embedded in the inner wall of the cylinder body; a rubber block is slidably connected in the slot of the No. 1 worm gear; and the rubber block is fixedly connected to the slot wall via a supporting spring.

[0016] Preferably, a bellows is sleeved on the surface of the driving rod; the bellows is made of PTFE material.

[0017] A debugging method for an electric actuator capable of rapid debugging, the method being applicable to the above-mentioned electric actuator capable of rapid debugging, including an electric mode and a manual mode:

[0018] The steps of using the electric mode include:

[0019] S1: When the operator remotely controls the operation of the driving motor, the driving motor drives the mounting rod to rotate through the screw rod, so that the mounting rod drives the transmission shaft to rotate through the transmission belt, so that the transmission shaft drives the No. 1 worm gear to rotate through the No. 1 worm gear, so that the No. 1 worm gear drives the slot on the surface to the blocking block, so that the blocking block enters the slot under the push of the restoring force of the connecting spring, and at this time the blocking block limits the No. 1 worm gear;

[0020] S2: When the blocking block is inserted into the slot, the blocking block pushes the rubber block in the slot to extend out from the other end of the slot, so that the rubber block extending out of the slot squeezes the pressure sensor embedded in the inner wall of the cylinder body, so that the pressure sensor transmits an electrical signal to the drive motor, causing the drive motor to stop;

[0021] S3: When it is necessary to adjust the preset position of the blocking block, first control the servo motor to operate, so that the servo motor drives the push block to squeeze the airbag through the screw rod, so that the hydraulic oil in the airbag enters the groove and pushes the connecting rod in the groove to extend downward out of the groove, so that the driving rod is inserted into the slot at the lower end of the connecting rod; then control the driving motor to drive the second worm to rotate through the mounting rod, so that the second worm drives the second worm wheel to drive the blocking block to rotate, thereby realizing the change of the position of the blocking block;

[0022] The steps of using the manual mode include:

[0023] A1: Valve opening and closing: The user directly turns the hand wheel, so that the hand wheel can directly drive the screw connected to it to rotate, so that the screw drives the transmission shaft to rotate through the mounting rod, so that the transmission shaft drives the worm wheel No. 1 to rotate through the worm No. 1, so that the worm wheel No. 1 drives the valve to open and close;

[0024] A2: Preset opening and closing angle: The user first rotates the screw to extend out of one end of the cylinder body, so that the screw drives the push plate to squeeze the airbag, so that the hydraulic oil in the airbag enters the groove, and the driving rod is inserted into the slot at the lower end of the connecting rod; then the handwheel is rotated so that the handwheel can drive the mounting rod to rotate the connecting rod through the screw, so that the connecting rod drives the No. 2 worm to rotate through the driving rod, so that the No. 2 worm can drive the No. 2 worm wheel to rotate the blocking block.

[0025] The beneficial effects of the present invention are as follows:

[0026] 1. The present invention sets a limit unit so that the No. 2 worm in the limit unit can drive the No. 2 worm wheel to rotate. Since the blocking block installed on the surface of the No. 2 worm wheel can block and limit the No. 1 worm wheel, the opening and closing angle of the valve driven by the No. 1 worm wheel is limited by the No. 2 worm wheel. By controlling the rotation angle of the No. 2 worm wheel, the preset opening and closing range can be adjusted, thereby preventing the valve from operating only within the preset opening and closing range. The present invention can adapt to various working condition changes encountered in actual operation, thereby improving the practicality of the present invention.

[0027] 2. The present invention sets a pressure sensor so that when the blocking block is extended into the slot, the rubber block in the slot will be pushed by the blocking block to squeeze the supporting spring, so that the rubber block in the slot extends from the other end of the slot and contacts the pressure sensor, so that the rubber block applies pressure to the pressure sensor, so that the pressure sensor senses the pressure of the rubber block and transmits an electrical signal to the drive motor, so that the drive motor stops, thereby avoiding the overload problem caused by the drive motor running for too long, reducing the waste of electric energy, and at the same time increasing the service life of the drive motor. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The present invention is further described below in conjunction with the accompanying drawings and implementation modes.

[0029] Figure 1 is a stereogram of the present invention;

[0030] Figure 2 It is a schematic diagram of the structure of the present invention;

[0031] Figure 3 yes Figure 2 The enlarged view of point A in the middle;

[0032] Figure 4 yes Figure 2 The enlarged view of point B in the middle;

[0033] Figure 5 It is a schematic diagram of the structure of the valve body used in the present invention;

[0034] Figure 6 yes Figure 5 Enlarged view of point C in the middle;

[0035] Figure 7 is a method flow chart of the electric mode of the present invention;

[0036] Figure 8 is a method flow chart of the manual mode of the present invention;

[0037] In the figure: 1, valve; 11, cylinder; 111, pointer; 12, worm wheel No. 1; 121, worm gear No. 1; 122, transmission shaft; 13, screw; 131, hand wheel; 132, bevel gear ring; 133, mounting rod; 134, groove; 135, connecting rod; 14, transmission belt; 15, driving motor; 151, bevel gear shaft; 16, oil storage tank; 161, push plate; 162, screw; 163, Servo motor; 164, spur gear set; 165, airbag; 17, annular groove; 171, airway; 18, pressure sensor; 2, worm gear No. 2; 21, blocking groove; 22, blocking block; 23, connecting spring; 24, electromagnetic sheet; 25, slot; 251, rubber block; 252, supporting spring; 26, worm gear No. 2; 27, driving rod; 271, slot; 272, bellows; 28, bevel gear set. DETAILED DESCRIPTION

[0038] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0039] like Figures 1 to 8 As shown, the electric actuator capable of rapid debugging of the present invention comprises a valve 1 and a cylinder 11 connected to the valve 1, and further comprises:

[0040] A number one worm wheel 12, the number one worm wheel 12 is fixedly connected to the valve 1; a pointer 111 fixedly connected to the valve 1 is provided at one end of the cylinder body 11 away from the valve 1; a number one worm 121 meshing therewith is provided on one side of the number one worm wheel 12; the number one worm 121 is rotatably connected to the inner wall of the cylinder body 11; a transmission shaft 122 is provided above the number one worm 121; the transmission shaft 122 is slidably connected to the number one worm 121; a screw 13 is provided above the number one worm wheel 12; the screw 13 is connected to the cylinder body 11 in a spiral transmission manner; a hand wheel 131 is fixedly connected to the upper end of the screw 13; the screw 13 and the transmission shaft 122 are connected in a belt transmission manner through a transmission belt 14;

[0041] A bevel gear ring 132, the bevel gear ring 132 is fixedly mounted on the surface of the screw 13; a drive motor 15 is mounted on one side of the cylinder body 11; the output shaft of the drive motor 15 is fixedly connected to a bevel gear shaft 151; the bevel gear ring 132 is meshed with the bevel gear shaft 151; a mounting rod 133 is slidably connected to the lower end of the screw 13; the mounting rod 133 is connected to the transmission shaft 122 through a transmission belt 14 for belt transmission;

[0042] A limiting unit is installed inside the cylinder body 11; the limiting unit is used to limit the No. 1 worm gear 12; the limiting unit includes a No. 2 worm gear 2, and the No. 2 worm gear 2 is rotatably connected to the inner wall of the cylinder body 11; a blocking groove 21 is provided on the side of the No. 2 worm gear 2 close to the No. 1 worm gear 12; a blocking block 22 is slidably sealed in the blocking groove 21; the blocking block 22 is fixedly connected to the bottom of the blocking groove 21 by a connecting spring 23; an electromagnetic sheet 24 is inlaid at the bottom of the blocking groove 21; a slot 25 matching with the blocking block 22 is provided on the side of the No. 1 worm gear 12 close to the No. 2 worm gear 2; a No. 2 worm 26 meshing with the No. 2 worm gear 2 is arranged above the No. 2 worm gear 2; the No. 2 worm gear 26 is connected to the mounting rod 133 by a clutchable transmission unit;

[0043] A feedback unit is installed inside the cylinder body 11 , and is used to monitor the position of the valve 1 .

[0044] As an embodiment of the present invention, the transmission unit includes a connecting rod 135 and a driving rod 27; a groove 134 is provided at the lower end of the mounting rod 133; the connecting rod 135 is slidingly and sealingly connected in the groove 134; the driving rod 27 is rotationally connected to the cylinder body 11; a slot 271 matching the driving rod 27 is provided at the lower end of the connecting rod 135; the driving rod 27 is located directly below the slot 271; the driving rod 27 and the second worm gear 26 are connected through a bevel gear set 28.

[0045] As an embodiment of the present invention, the transmission unit further includes a push plate 161; an oil storage tank 16 is provided on one side of the cylinder body 11; the push plate 161 is slidably connected in the oil storage tank 16; a screw rod 162 which is rotatably connected in the oil storage tank 16 and is spirally connected to the push plate 161; a servo motor 163 is fixedly installed on one side of the cylinder body 11; a spur gear set 164 is provided between the servo motor 163 and the screw rod 162; the servo motor 163 drives the screw rod 162 to rotate through the spur gear set 164; an air bag 165 is sleeved on the surface of the screw rod 162; an annular groove 17 which is connected to the groove 134 is provided on the surface of the mounting rod 133; an air passage 171 is provided inside the cylinder body 11; one end of the air passage 171 is connected to the air bag 165, and the other end is connected to the annular groove 17;

[0046] When working, although the existing electric actuator can limit the opening and closing angle of the valve 1, the installation position of the core limit assembly is fixed. Since the opening and closing angle of the valve 1 is limited by the core limit assembly, that is, the opening and closing angle of the valve 1 is also fixed, the valve 1 can only work within a preset opening and closing range, and the preset opening and closing range cannot adapt to the various working conditions encountered in actual operation; for example, when the pressure of natural gas in the pipeline changes due to seasonal demand, the opening and closing angle of the valve 1 needs to be adjusted according to the demand, which causes the fixed core limit assembly to hinder the actuator from adjusting the opening and closing angle;

[0047] In this regard, the present invention sets a limiting unit so that the second worm 26 in the limiting unit can drive the second worm wheel 2 to rotate. Since the blocking block 22 installed on the surface of the second worm wheel 2 can block and limit the first worm wheel 12, the opening and closing angle of the valve 1 driven by the first worm wheel 12 is limited by the second worm wheel 2. By controlling the rotation angle of the second worm wheel 2, the preset opening and closing range can be adjusted, thereby preventing the valve 1 from working only within the preset opening and closing range. In addition, the present invention can adapt to various working condition changes encountered in actual operation, thereby improving the practicality of the present invention.

[0048] In the initial state, the spur gear set 164 includes two spur gears, one of which is fixedly connected to the output shaft of the servo motor 163, and the other spur gear is fixedly connected to the screw 162, and the two spur gears are in a meshing state; the bevel gear set 28 includes two bevel gears, one of which is fixedly connected to the lower end of the drive rod 27, and the other bevel gear is fixedly connected to the second worm 26, and the two bevel gears are meshed with each other; when the user remotely controls the valve 1 to be closed, it is only necessary to control the drive motor 15 to operate, so that the drive motor 15 drives the bevel gear shaft 151 fixedly connected thereto to rotate, so that the rotating bevel gear shaft 151 drives the screw 13 to rotate through the bevel gear ring 132 meshing therewith, so that the screw 13 can drive the mounting rod 133 slidably connected thereto to rotate during the rotation; since the mounting rod 133 The screw rod 13 is connected to the transmission shaft 122 through the transmission belt 14, so that the screw rod 13 can drive the transmission shaft 122 to rotate through the mounting rod 133, so that the transmission shaft 122 drives the No. 1 worm 121 slidably connected at the lower end to rotate, so that the No. 1 worm 121 can drive the valve 1 to rotate to a closed state through the No. 1 worm gear 12; similarly, when the valve 1 needs to be opened, it is only necessary to control the driving motor 15 to rotate in the opposite direction, so that the driving motor 15 can drive the No. 1 worm gear 12 to drive the valve 1 to rotate in the opening direction; because the end of the cylinder body 11 away from the valve 1 is rotatably connected to the pointer 111, when the No. 1 worm gear 12 rotates, the No. 1 worm gear 12 can drive the pointer 111 fixed thereto to rotate, and the user can observe the position indicated by the pointer 111 through the monitor to know the opening and closing angle of the valve 1;

[0049] In addition, natural gas pipelines often span hundreds or even thousands of kilometers, especially when crossing complex terrains such as mountains, forests and deserts. These obstacles can cause attenuation or reflection of electrical signals, resulting in the actuator having a slow response time due to signal interference. For example, after the drive motor 15 drives the No. 1 worm gear 12 to drive the valve 1 to rotate to a specified opening and closing angle, the drive motor 15 fails to receive the stop signal of the remote control due to signal interference, and continues to drive the No. 1 worm gear 12 to rotate, causing the No. 1 worm gear 12 to drive the valve 1 to continue to increase its opening and closing angle.

[0050] In the initial state, one end of the airbag 165 is fixedly connected to the push plate 161, and the other end is fixedly connected to the inner wall of the oil storage tank 16; when the user installs the valve 1, the blocking block 22 on one side of the second worm gear 2 is inserted into the slot 25 on one side of the first worm gear 12. At this time, the first worm gear 12 and the second worm gear 2 are in a connected state. The user first controls the servo motor 163 to operate, so that the servo motor 163 can drive the screw rod 162 to rotate through the spur gear set 164, so that the screw rod 162 can drive the push plate 161 connected to its spiral transmission to move in the oil storage tank 16, so that the push plate 161 moves toward the direction close to the airbag 165. Since the airbag 165 is filled with hydraulic oil, when the push plate 161 pushes the airbag 165, the hydraulic oil in the airbag 165 is squeezed and flows from the air passage 171 into the annular groove 17; since the mounting rod 133 is rotatably sealed and connected to the cylinder body 11, the hydraulic oil flowing into the annular groove 17 will enter the groove 134 connected to the annular groove 17, so that the hydraulic oil entering the groove 134 pushes the connecting rod 135 in the groove 134 to extend out of the groove 134, so that the connecting rod 135 drives the card slot 271 to descend, so that the driving rod 27 can be inserted into the card slot 271 at the lower end of the connecting rod 135, and then the driving rod 27 can be used. The operator controls the driving motor 15 to operate, so that the driving motor 15 can drive the screw 13 to rotate, so that the screw 13 can drive the connecting rod 135 to rotate synchronously through the mounting rod 133. At this time, the mounting rod 133 drives the No. 1 worm gear 12 to rotate through the transmission shaft 122, and the connecting rod 135 drives the No. 2 worm gear 26 to rotate through the driving rod 27 and the bevel gear set 28. At this time, the No. 2 worm gear 26 and the No. 1 worm gear 121 are in a synchronous rotation state, so that the No. 2 worm gear 26 and the No. 1 worm gear 121 respectively drive the No. 1 worm gear 12 and the No. 2 worm gear 2 to rotate synchronously; at this time, the user who installs the valve 1 can see the indicated position of the pointer 111. The position of the blocking block 22 is determined by the position; when the pointer 111 points to the preset opening and closing angle, the driving motor 15 is controlled to stop, and the servo motor 163 runs in the reverse direction, so that the servo motor 163 drives the screw 13 to rotate in the reverse direction through the spur gear set 164, so that the screw 13 drives the push plate 161 to pull the airbag 165 connected thereto to extend, and at this time, the space in the airbag 165 increases and the pressure decreases, so that the hydraulic oil in the groove 134 flows back to the airbag 165 through the annular groove 17 and the air channel 171, and the pressure in the groove 134 decreases, so that the connecting rod 135 enters the groove 134 under the push of the pressure difference;At this time, the connecting rod 135 is separated from the driving rod 27, so that the second worm gear 2 drives the blocking block 22 to point to the position of the preset opening and closing angle. At this time, the control electromagnetic sheet 24 is energized, so that the electromagnetic sheet 24 in the blocking groove 21 can absorb the blocking block 22 and squeeze the connecting spring 23 into the blocking groove 21, so that the blocking block 22 extends out of the slot 25, so that the first worm gear 12 is separated from the second worm gear 2. At this time, the user controls the driving motor 15 to rotate in the opposite direction, so that the driving motor 15 drives the second worm gear 2 to rotate in the opposite direction, so that the second worm gear 2 drives The valve 1 that is automatically opened and closed is closed, and the pointer 111 rotates and is in a horizontal state under the drive of the second worm gear 2; then the electromagnetic plate 24 is controlled to be de-energized, and at this time, the blocking block 22 is pushed by the connecting spring 23 to extend out of the blocking slot 21 and contact the first worm gear 12; when the remote control valve 1 is opened and closed, the driving motor 15 drives the first worm gear 12 to rotate, so that the first worm gear 12 drives the slot 25 to rotate in the direction close to the blocking block 22, and at this time the blocking block 22 is in sliding contact with the first worm gear 12 until the slot 25 rotates to the blocking block 2 2, the blocking block 22 is pushed by the restoring force of the connecting spring 23 and inserted into the slot 25, so that the first worm gear 12 is connected to the second worm gear 2 through the blocking block 22. Since the second worm gear 2 and the second worm 26 are in meshing state, and the worm gear transmission has self-locking property; therefore, when the disturbed driving motor 15 continues to drive the first worm gear 12 to rotate, the first worm gear 12 is blocked by the blocking block 22 and cannot effectively rotate, thereby ensuring that the valve 1 driven by the first worm gear 12 can be limited at the specified opening and closing position; in addition, the use of When the preset opening and closing angle needs to be adjusted, the second worm gear 2 can be controlled to rotate so that the second worm gear 2 drives the blocking block 22 to rotate, thereby adjusting the preset opening and closing angle position of the blocking block 22; when the pressure of the natural gas in the pipeline changes due to seasonal demand, the second worm gear 2 can drive the blocking block 22 to rotate to change the opening and closing angle position of the valve 1, so that the adjustable preset opening and closing range can adapt to various working conditions encountered in actual operation, so that the practicality of the present invention is further improved;

[0051] If there is a power outage in a remote mountainous area where the electric actuator is located, it is necessary to notify the surrounding operators to manually operate the electric actuator. At this time, the operator only needs to turn the handwheel 131 so that the handwheel 131 can drive the screw 13 to rotate, so that the screw 13 can drive the transmission shaft 122 to rotate through the mounting rod 133, so that the transmission shaft 122 drives the No. 1 worm gear 12 to rotate through the No. 1 worm gear 121 connected thereto; if the operator needs to manually adjust the preset opening and closing angle of the No. 2 worm gear 2, he only needs to manually turn the screw rod 162 to control the connection between the connecting rod 135 and the driving rod 27; and then by turning the handwheel 131, the No. 1 worm gear 12 and the No. 2 worm gear 2 can be driven to rotate synchronously.

[0052] As an embodiment of the present invention, the feedback unit includes a pressure sensor 18, which is embedded in the inner wall of the cylinder body 11; a rubber block 251 is slidably connected in the slot 25 of the No. 1 worm gear 12; the rubber block 251 is fixedly connected to the slot wall of the slot 25 by a support spring 252.

[0053] As an embodiment of the present invention, the surface of the driving rod 27 is sleeved with a bellows 272; the bellows 272 is made of PTFE material;

[0054] During operation, since the natural gas transmission pipeline often spans hundreds or even thousands of kilometers, especially when crossing complex terrains such as mountains, forests and deserts, these obstacles will cause attenuation or reflection of the electrical signal, so that the drive motor 15 fails to receive the stop signal of the remote control due to signal interference. If the drive motor 15 is still in operation, it will cause the drive motor 15 to waste and consume electrical energy. In addition, if the drive motor 15 runs for too long, it will cause the drive motor 15 to be overloaded, thereby causing damage to the drive motor 15 and affecting the service life of the drive motor 15.

[0055] In this regard, the present invention sets a pressure sensor 18, so that when the blocking block 22 is inserted into the slot 25, the rubber block 251 in the slot 25 is pushed by the blocking block 22 to squeeze the support spring 252, so that the rubber block 251 in the slot 25 extends from the other end of the slot 25 and contacts the pressure sensor 18, so that the rubber block 251 applies pressure to the pressure sensor 18, so that the pressure sensor 18 senses the pressure of the rubber block 251 and transmits an electrical signal to the drive motor 15, so that the drive motor 15 stops, thereby avoiding the overload problem caused by the drive motor 15 running for too long, reducing the waste of electric energy, and at the same time increasing the service life of the drive motor 15;

[0056] In the initial state, the slot 25 passes through the No. 1 worm gear 12. When the No. 1 worm gear 12 drives the slot 25 to the blocking block 22, the blocking block 22 is pushed into the slot 25 by the restoring force of the connecting spring 23, so that the rubber block 251 in the slot 25 is pushed by the blocking block 22 to squeeze the supporting spring 252, so that the rubber block 251 in the slot 25 extends from the other end of the slot 25 and contacts the pressure sensor 18, so that the pressure sensor 18 senses the squeezing of the rubber block 251 and generates an electrical signal to the drive motor 15, so that the drive motor 15 stops running, which not only avoids the overload problem of the drive motor 15, but also reduces the electric energy wasted by the delay control of the drive motor 15, so that the practicality of the present invention is improved; The upper end of the driving rod 27 is exposed from the cylinder body 11, so by setting a bellows 272 on the part where the driving rod 27 extends out of the cylinder body 11, the bellows 272 can prevent external wind and sand from falling on the upper end of the driving rod 27, thereby preventing wind and sand from entering the slot 271 under the push of the driving rod 27, preventing wind and sand from blocking the connection between the connecting rod 135 and the driving rod 27, thereby ensuring that the connecting rod 135 and the driving rod 27 can be stably connected, and by setting the bellows 272 to be made of PTFE material, the bellows 272 has the characteristics of smooth surface and wear resistance, thereby reducing the wear of the bellows 272 by external wind and sand, increasing the service life of the bellows 272, and further improving the practical application effect of the present invention.

[0057] A debugging method for an electric actuator capable of rapid debugging, the method being applicable to the above-mentioned electric actuator capable of rapid debugging, including an electric mode and a manual mode:

[0058] The steps of using the electric mode include:

[0059] S1: When the operator remotely controls the operation of the driving motor 15, the driving motor 15 drives the mounting rod 133 to rotate through the screw rod 13, so that the mounting rod 133 drives the transmission shaft 122 to rotate through the transmission belt 14, so that the transmission shaft 122 drives the first worm wheel 12 to rotate through the first worm 121, so that the first worm wheel 12 drives the slot 25 on the surface to the blocking block 22, so that the blocking block 22 enters the slot 25 under the push of the restoring force of the connecting spring 23, and at this time, the blocking block 22 limits the first worm wheel 12;

[0060] S2: When the blocking block 22 is inserted into the slot 25, the blocking block 22 pushes the rubber block 251 in the slot 25 to extend out from the other end of the slot 25, so that the rubber block 251 extending out of the slot 25 squeezes the pressure sensor 18 embedded in the inner wall of the cylinder body 11, so that the pressure sensor 18 transmits an electrical signal to the drive motor 15, so that the drive motor 15 stops;

[0061] S3: When it is necessary to adjust the preset position of the blocking block 22, first control the servo motor 163 to operate, so that the servo motor 163 drives the push block to squeeze the airbag 165 through the screw 162, so that the hydraulic oil in the airbag 165 enters the groove 134 and pushes the connecting rod 135 in the groove 134 to extend downward out of the groove 134, so that the driving rod 27 is inserted into the slot 271 at the lower end of the connecting rod 135; then control the driving motor 15 to drive the second worm 26 to rotate through the mounting rod 133, so that the second worm 26 drives the second worm wheel 2 to drive the blocking block 22 to rotate, thereby realizing the change of the position of the blocking block 22;

[0062] The steps of using the manual mode include:

[0063] A1: Valve 1 opens and closes: The user directly rotates the hand wheel 131, so that the hand wheel 131 can directly drive the screw 13 connected thereto to rotate, so that the screw 13 drives the transmission shaft 122 to rotate through the mounting rod 133, so that the transmission shaft 122 drives the first worm wheel 12 to rotate through the first worm 121, so that the first worm wheel 12 drives the valve 1 to open and close;

[0064] A2: Preset opening and closing angle: The user first rotates the screw rod 162 to extend out of one end of the cylinder body 11, so that the screw rod 162 drives the push plate 161 to squeeze the airbag 165, so that the hydraulic oil in the airbag 165 enters the groove 134, and the driving rod 27 is inserted into the groove 271 at the lower end of the connecting rod 135; then rotate the hand wheel 131, so that the hand wheel 131 can drive the mounting rod 133 through the screw rod 13 to drive the connecting rod 135 to rotate, so that the connecting rod 135 drives the second worm 26 to rotate through the driving rod 27, so that the second worm 26 can drive the second worm wheel 2 to drive the blocking block 22 to rotate.

[0065] In the description of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate directions or positional relationships based on the attached Figure 1 The orientation or positional relationship shown is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation. Therefore, it cannot be understood as limiting the scope of protection of the present invention. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0066] The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A rapidly debuggable electric actuator, comprising a valve (1) and a cylinder (11) connected to the valve (1), characterized in that: Also includes: A number one worm wheel (12), the number one worm wheel (12) being fixedly connected to the valve (1); a pointer (111) fixedly connected to the valve (1) is provided at one end of the cylinder body (11) away from the valve (1); a number one worm (121) meshing therewith is provided on one side of the number one worm wheel (12); the number one worm (121) is rotatably connected to the inner wall of the cylinder body (11); a transmission shaft (122) is provided above the number one worm (121); the transmission shaft (122) is slidably connected to the number one worm (121); a screw (13) is provided above the number one worm wheel (12); the screw (13) is connected to the cylinder body (11) in a spiral transmission manner; a hand wheel (131) is fixedly connected to the upper end of the screw (13); the screw (13) and the transmission shaft (122) are connected in a belt transmission manner via a transmission belt (14); A bevel gear ring (132), wherein the bevel gear ring (132) is fixedly mounted on the surface of the screw rod (13); a driving motor (15) is mounted on one side of the cylinder body (11); an output shaft of the driving motor (15) is fixedly connected to a bevel gear shaft (151); the bevel gear ring (132) is meshed with the bevel gear shaft (151); a mounting rod (133) is slidably connected to the lower end of the screw rod (13); the mounting rod (133) is connected to the transmission shaft (122) by a belt drive via a transmission belt (14); A limiting unit is installed inside the cylinder body (11); the limiting unit is used to limit the position of the first worm gear (12); the limiting unit comprises a second worm gear (2), the second worm gear (2) is rotatably connected to the inner wall of the cylinder body (11); a blocking groove (21) is provided on a side of the second worm gear (2) close to the first worm gear (12); a blocking block (22) is slidably sealed in the blocking groove (21); the blocking block (22) is rotatably connected to the blocking block (21); The bottoms of the grooves (21) are fixedly connected by a connecting spring (23); the bottom of the blocking groove (21) is inlaid with an electromagnetic sheet (24); a slot (25) matching with the blocking block (22) is provided on a side of the first worm wheel (12) close to the second worm wheel (2); a second worm (26) meshing with the second worm wheel (2) is provided above the second worm wheel (2); the second worm (26) is connected to the mounting rod (133) by a detachable transmission unit; A feedback unit is installed inside the cylinder body (11) and is used to monitor the position of the valve (1).

2. The electric actuator capable of rapid debugging according to claim 1, characterized in that: The transmission unit comprises a connecting rod (135) and a driving rod (27); a groove (134) is provided at the lower end of the mounting rod (133); the connecting rod (135) is slidably sealed and connected in the groove (134); the driving rod (27) is rotationally connected to the cylinder body (11); a groove (271) matching with the driving rod (27) is provided at the lower end of the connecting rod (135); the driving rod (27) is located directly below the groove (271); the driving rod (27) is transmission-connected to the second worm gear (26) via a bevel gear set (28).

3. The electric actuator capable of rapid debugging according to claim 2, characterized in that: The transmission unit further comprises a push plate (161); an oil storage tank (16) is provided on one side of the cylinder body (11); the push plate (161) is slidably connected in the oil storage tank (16); a screw rod (162) which is rotatably connected in the oil storage tank (16) and is helically connected to the push plate (161); a servo motor (163) is fixedly mounted on one side of the cylinder body (11); a spur gear is provided between the servo motor (163) and the screw rod (162). The servo motor (163) drives the screw rod (162) to rotate via the spur gear group (164); the surface of the screw rod (162) is sleeved with an air bag (165); the surface of the mounting rod (133) is provided with an annular groove (17) which is in communication with the groove (134); the cylinder body (11) is provided with an air passage (171); one end of the air passage (171) is in communication with the air bag (165), and the other end is in communication with the annular groove (17).

4. The electric actuator capable of rapid debugging according to claim 3, characterized in that: The feedback unit comprises a pressure sensor (18), wherein the pressure sensor (18) is embedded in the inner wall of the cylinder body (11); a rubber block (251) is slidably connected in the slot (25) of the first worm gear (12); and the rubber block (251) is fixedly connected to the slot wall of the slot (25) via a support spring (252).

5. The electric actuator capable of rapid debugging according to claim 4, characterized in that: The surface of the driving rod (27) is sleeved with a bellows (272); the bellows (272) is made of PTFE material.

6. A debugging method for a rapidly debuggable electric actuator, the method being applicable to the rapidly debuggable electric actuator as claimed in claim 5, characterized in that: Including electric mode and manual mode: The steps of using the electric mode include: S1: During the operation of the driving motor (15) controlled remotely by the operator, the driving motor (15) drives the mounting rod (133) to rotate through the screw rod (13), so that the mounting rod (133) drives the transmission shaft (122) to rotate through the transmission belt (14), so that the transmission shaft (122) drives the first worm gear (12) to rotate through the first worm gear (121), so that the first worm gear (12) drives the slot (25) on the surface to the blocking block (22), so that the blocking block (22) enters the slot (25) under the push of the restoring force of the connecting spring (23), and at this time, the blocking block (22) limits the first worm gear (12); S2: When the blocking block (22) is inserted into the slot (25), the blocking block (22) pushes the rubber block (251) in the slot (25) to extend out from the other end of the slot (25), so that the rubber block (251) extending out of the slot (25) squeezes the pressure sensor (18) embedded in the inner wall of the cylinder body (11), so that the pressure sensor (18) transmits an electrical signal to the drive motor (15), so that the drive motor (15) stops; S3: When it is necessary to adjust the preset position of the blocking block (22), first control the servo motor (163) to operate, so that the servo motor (163) drives the push block to squeeze the airbag (165) through the screw rod (162), so that the hydraulic oil in the airbag (165) enters the groove (134) and pushes the connecting rod (135) in the groove (134) to extend downward out of the groove (134), so that the driving rod (27) is inserted into the slot (271) at the lower end of the connecting rod (135); then control the driving motor (15) to drive the second worm gear (26) to rotate through the mounting rod (133), so that the second worm gear (26) drives the second worm wheel (2) to drive the blocking block (22) to rotate, thereby realizing the change of the position of the blocking block (22); The steps of using the manual mode include: A1: Valve (1) opens and closes: the user directly rotates the hand wheel (131), so that the hand wheel (131) can directly drive the screw (13) connected thereto to rotate, so that the screw (13) drives the transmission shaft (122) to rotate through the mounting rod (133), so that the transmission shaft (122) drives the first worm wheel (12) to rotate through the first worm (121), so that the first worm wheel (12) drives the valve (1) to open and close; A2: Preset opening and closing angle: The user first rotates the screw rod (162) to extend one end of the cylinder body (11), so that the screw rod (162) drives the push plate (161) to squeeze the airbag (165), so that the hydraulic oil in the airbag (165) enters the groove (134), so that the driving rod (27) is inserted into the groove (271) at the lower end of the connecting rod (135); then the hand wheel (131) is rotated, so that the hand wheel (131) can drive the installation rod (133) to drive the connecting rod (135) to rotate through the screw rod (13), so that the connecting rod (135) drives the second worm gear (26) to rotate through the driving rod (27), so that the second worm gear (26) can drive the second worm wheel (2) to drive the blocking block (22) to rotate.

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