Bidirectional synchronous electric valve mechanical transmission structure

Abstract

The utility model discloses a two-way synchronous electric valve mechanical transmission structure which comprises a motor, a one-way transmission gear set and a valve body, a first worm gear is arranged at the end of the motor, the one-way transmission gear set is provided with a second worm gear, output shafts are arranged on the two sides of the second worm gear respectively, transmission gears are arranged at the ends of the two output shafts respectively, and the transmission gears are connected with the first worm gear and the second worm gear respectively. The first worm gear is meshed with the second worm gear so that transmission gears at the ends of the output shafts on the two sides can be driven to rotate, rubber valve elements are oppositely arranged on the two transverse sides in the valve body, the ends of the rubber valve elements are fixedly connected with valve element top plates, and threads are arranged on the inner wall of the valve body and the surfaces of the valve element top plates. The valve core top plate is connected with a top rod gear through a push rod, the top rod gear is meshed with the transmission gear, a packing box is longitudinally arranged on the valve body, a pumping unit polish rod is arranged in the packing box, and the pumping unit polish rod extends to the position between the two rubber valve cores.

Description

Technical Field

[0001] The utility model relates to the field of valves, in particular to a bidirectional synchronous electric valve mechanical transmission structure. Background Art

[0002] The existing oil field wellheads usually use rubber gates to shut in the wells. The rubber gates are sealed in such a way that the rubbers on the left and right sides elastically fit tightly with the central pumping rod for sealing. Hand wheels are provided on the outside of both sides of the equipment, and the hand wheels on both sides are connected to the rubbers on both sides through transmission shafts respectively. By turning the hand wheels, the rubber can be driven to move toward the pumping rod to close the wellhead.

[0003] The rubber gate is very heavy, and a lot of force is needed to open and close it. When closing it by hand, the rubber and the bare rod seal will leak because the force is not enough. Usually, a force rod is used to close it (the switch is especially tight in winter).

[0004] When the valve is closed, the rubber elastically deforms and stores force, causing rebound. The valve has no locking function and rotates back a short distance.

[0005] In addition, two people are required to operate the switch at the same time. During operation, the torque applied on both sides will be different, and the rubber and the bare rod on both sides will be unevenly stressed, causing the gate to not close tightly. Utility Model Content

[0006] The utility model solves the problem that the existing valve is not tightly closed.

[0007] The technical scheme adopted by the utility model is: a bidirectional synchronous electric valve mechanical transmission structure, including a motor, a one-way transmission gear set and a valve body, the motor end is provided with a first worm gear, the one-way transmission gear set has a second worm gear, both sides of the second worm gear are provided with output shafts, the ends of the two output shafts are provided with transmission gears, the first worm gear is meshed with the second worm gear, so as to drive the transmission gears at the ends of the output shafts on both sides to rotate, the valve body is relatively provided with rubber valve cores on both sides in the horizontal direction, the ends of the rubber valve core are fixedly connected to the valve core top plate, the inner wall of the valve body and the surface of the valve core top plate are provided with threads, the valve core top plate is connected with the push rod gear through a push rod, the push rod gear is meshed with the transmission gear, the valve body is provided with a packing box in the longitudinal direction, a pumping unit polished rod is provided in the packing box, and the pumping unit polished rod extends between the two rubber valve cores.

[0008] Compared with the prior art, the beneficial effects of the utility model are as follows: it solves the problem in the prior art that the synchronous force on the switching valve cores on both sides is uneven, resulting in the gate not being closed tightly. The one-way transmission gear set of the present application realizes constant torque output on the left and right sides through the meshing connection of the gears on both sides, realizes the synchronization problem when the valve cores on both sides are switched, and solves the problem in the prior art that the rubber elastically deforms and accumulates force when tightened, resulting in rebound. The present application uses a one-way transmission gear set, one side of which is meshed with the motor, and the other side is meshed with the valve core assembly, to play the role of one-way transmission from the motor to the valve core and shutdown locking, thereby preventing the valve core from rebounding after being closed. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 It is the front view of the utility model;

[0010] Figure 2 It is an exploded view of the utility model;

[0011] Figure 3 This is a schematic diagram of the structure of a one-way transmission gear set of the utility model;

[0012] Figure 4 This is a schematic diagram of the structure of the transmission shaft fixing platform of the utility model;

[0013] Figure 5 The utility model is a schematic diagram of the sealing structure formed by the rubber valve cores on both sides and the polished rod of the oil pump.

[0014] Figure numerals: motor 100; one-way transmission gear set 200; valve body 300; first worm gear 110; second worm gear 210; output shaft 220; transmission gear 230; rubber valve core 310; valve core top plate 320; push rod 330; top rod gear 340; packing box 301; oil pumping unit bare rod 302; speed change gear box 250; transmission shaft fixing platform 260; first umbrella gear 261; second umbrella gear 262; third umbrella gear 263; fourth umbrella gear 264; protective cover 101; fuel filler port 102. DETAILED DESCRIPTION

[0015] like Figures 1 to 5The invention discloses a bidirectional synchronous electric valve mechanical transmission structure, comprising a motor 100, a one-way transmission gear set 200 and a valve body 300. The motor 100 is provided with a first worm gear 110 at the end thereof, and the one-way transmission gear set 200 has a second worm gear 210. Both sides of the second worm gear 210 are provided with output shafts 220. Both ends of the two output shafts 220 are provided with transmission gears 230. The first worm gear 110 is meshed with the second worm gear 210, so as to drive the transmission gears 230 at the ends of the output shafts 220 on both sides to rotate. The valve body 300 is provided with rubber valve cores 310 on both sides thereof, the ends of the rubber valve core 310 are fixedly connected to the valve core top plate 320, the inner wall of the valve body 300 and the surface of the valve core top plate 320 are provided with threads, the valve core top plate 320 is connected with a push rod gear 340 through a push rod 330, the push rod gear 340 is meshed with the transmission gear 230, a packing box 301 is provided in the longitudinal direction of the valve body 300, a pumping unit polished rod 302 is provided in the packing box 301, and the pumping unit polished rod 302 extends between the two rubber valve cores 310.

[0016] When in use, the motor 100 drives the second worm gear 210 to rotate through the first worm gear 110, and the rotation of the second worm gear 210 drives the transmission gear 230 to rotate through the output shaft 220, and the transmission gear 230 drives the top rod gear 340 to rotate, and the top rod gear 340 drives the valve core top plate 320 to rotate through the push rod 330, so that the valve core top plate 320 is threadedly engaged with the inner wall thread of the valve body 300 through the thread, and can drive the rubber valve core 310 to rotate in or out of the valve body 300, and the rotation of the rubber valve core 310 in the valve body 300 can form a mating sealing state or an open state with the pumping unit bare rod 302, thereby realizing the opening and closing of the oil well.

[0017] In order to solve the problem in the prior art that the switching valve cores on both sides are subjected to uneven force synchronously, resulting in the gate not closing tightly, the one-way transmission gear set 200 of the present application realizes constant torque output on the left and right sides through the meshing connection of the gears on both sides, realizes the synchronization problem when the valve cores on both sides are switched, and solves the problem in the prior art that the rubber elastically deforms and accumulates force when tightened, resulting in rebound. The present application uses a one-way transmission gear set 200, one side of which is meshed with the motor 300 and the other side is meshed with the valve core assembly, to play the one-way transmission and shutdown locking functions from the motor to the valve core, thereby preventing the valve core from closing and rebounding.

[0018] A speed change gear box 250 is provided in the output shaft 220 on both sides of the second worm gear 210. A transmission shaft fixing platform 260 is provided in the speed change gear box 250. The transmission shaft fixing platform 260 has four umbrella-shaped gears to form a master-slave transmission structure. The first umbrella-shaped gear 261 is fixedly connected to the second worm gear 210 through the input shaft 201. The first umbrella-shaped gear 261 is meshed with the second umbrella-shaped gear 262 and the third umbrella-shaped gear 263. The second umbrella-shaped gear 262 and the third umbrella-shaped gear 263 are driven transmission gears and move with the first umbrella-shaped gear 261. The fourth umbrella-shaped gear 264 is fixedly connected to the output shaft 220. The fourth umbrella-shaped gear 264 is meshed with the second umbrella-shaped gear 262 and the third umbrella-shaped gear 263.

[0019] The second umbrella gear 262 and the third umbrella gear 263 are both connected to the transmission shaft fixing platform 260 through bearings. The second umbrella gear 262, the third umbrella gear 263 and the transmission shaft fixing platform 260 can rotate freely relative to the output shaft 220. When there is a difference in the speed of the input shaft 201 and the output shaft 220 of the speed change gear box, the transmission shaft fixing platform 260 drives the transmission shaft fixing platform 260 to rotate around the output shaft 220 to offset the speed difference between the input shaft 201 and the output shaft 220, and can transmit torque at equal speed and torque between the first umbrella gear 261 and the fourth umbrella gear 264.

[0020] The speed change gearbox 250 transmits the torque from the input shaft 201 to the output shaft 220 in one direction through the meshing transmission of the first worm gear 110 and the second worm gear 210 , and locks the torque of the output shaft 220 to the input shaft 201 in one direction.

[0021] The device is also provided with a protective cover 101, which is sleeved on the outer sides of the transmission gear 230 and the push rod gear 340. The protective cover 101 is provided with a refueling port 102, which is convenient for maintenance, produces good lubrication, and reduces mechanical damage.

[0022] The double-valve synchronous switching electric mechanism of the utility model effectively eliminates the problem of different torques on both sides of the manual switching valve, and can conveniently use a reduction motor to synchronize the constant torque switch of the valve cores on both sides, and can automatically match the different input rotation speeds on both sides to offset the airtight fitting tolerances and errors of the rubber on both sides and the middle pipe column caused by the different closing positions of the valves themselves or long-term rubber eccentric wear. When closed, the two sides have the same torque, and the number of rotations on both sides can be asynchronous. The function of automatically matching the error of the closing position of the valve cores on both sides and the number of rotations of the threaded tappet can always close the valve core in good synchronization, so that the quality and efficiency of well shut-in are guaranteed.

[0023] Replacing the manual work of using a booster rod to manually switch the machine greatly reduces the intensity of manual work, reduces the working time, improves work efficiency, and reduces the risks brought by manual operation.

[0024] The rebound of the valve core after closing is solved, and the output shaft has a reverse locking function. This eliminates the possibility of the valve core automatically loosening after being tightened for a period of time, and improves the quality of well closing.

Claims

1. A bidirectional synchronous electric valve mechanical transmission structure, characterized in that: The invention comprises a motor (100), a one-way transmission gear set (200) and a valve body (300). The motor (100) is provided with a first worm gear (110) at the end thereof. The one-way transmission gear set (200) has a second worm gear (210). Output shafts (220) are provided on both sides of the second worm gear (210). Transmission gears (230) are provided at the ends of the two output shafts (220). The first worm gear (110) is meshed with the second worm gear (210), thereby driving the transmission gears (230) at the ends of the output shafts (220) on both sides to rotate. The valve body (300) is provided with a plurality of transmission gears (230) at the ends of the two output shafts (220). A rubber valve core (310) is arranged opposite to each other on both sides, and the end of the rubber valve core (310) is fixedly connected to the valve core top plate (320). The inner wall of the valve body (300) and the surface of the valve core top plate (320) are both provided with threads. The valve core top plate (320) is connected to a push rod gear (340) through a push rod (330). The push rod gear (340) is meshed with the transmission gear (230). A packing box (301) is arranged in the longitudinal direction of the valve body (300). A pumping unit polished rod (302) is arranged in the packing box (301). The pumping unit polished rod (302) extends between the two rubber valve cores (310).

2. The bidirectional synchronous electric valve mechanical transmission structure according to claim 1, characterized in that: A speed change gear box (250) is provided in the output shafts (220) on both sides of the second worm gear (210), and a transmission shaft fixing platform (260) is provided in the speed change gear box (250).

3. The bidirectional synchronous electric valve mechanical transmission structure according to claim 2 is characterized in that: The transmission shaft fixing platform (260) has four bevel gears forming a master-slave transmission structure, wherein the first bevel gear (261) is fixedly connected to the second worm gear (210) via the input shaft (201), the first bevel gear (261) is meshedly connected with the second bevel gear (262) and the third bevel gear (263), the second bevel gear (262) and the third bevel gear (263) are driven transmission gears and move with the first bevel gear (261), the fourth bevel gear (264) is fixedly connected to the output shaft (220), and the fourth bevel gear (264) is meshedly connected with the second bevel gear (262) and the third bevel gear (263).

4. The bidirectional synchronous electric valve mechanical transmission structure according to claim 3 is characterized in that: The second bevel gear (262) and the third bevel gear (263) are both connected to the transmission shaft fixing platform (260) via bearings, and the second bevel gear (262), the third bevel gear (263) and the transmission shaft fixing platform (260) can rotate freely relative to the output shaft (220).

5. The bidirectional synchronous electric valve mechanical transmission structure according to claim 1, characterized in that: A protective cover (101) is also provided, and the protective cover (101) is sleeved on the outer sides of the transmission gear (230) and the push rod gear (340).

6. The bidirectional synchronous electric valve mechanical transmission structure according to claim 5, characterized in that: The protective cover (101) is provided with a refueling port (102).

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