CN216894350U - Non-beam type large-transmission-ratio speed-reducing oil pumping machine - Google Patents

Abstract

A walking-beam-free high-transmission-ratio speed-reducing pumping unit comprises a motor, wherein a power output end of the motor is connected with a power input end of a corrugated gear reducer through a V-shaped belt and a belt wheel, a power output end of the corrugated gear reducer is connected with a connecting end of a crank, a plurality of pin holes are formed in the crank, the pin holes are connected with one end of a steel wire rope, and the other end of the steel wire rope bypasses a pulley to be connected with a Christmas tree; the motor transmits power to the belt wheel through an output shaft anticlockwise, the power is input into a wave generator of the wave tooth speed reducer through the V-shaped belt and the belt wheel, the speed is reduced through the flexible wheel and the steel wheel, the output shaft of the wave tooth speed reducer is directly connected with the crank, and the rotary motion is converted into linear reciprocating motion, so that the reversing of the oil pumping unit is completed, and the oil extraction operation is realized; the utility model has the advantages of small volume, light weight, large transmission ratio, compact structure, high efficiency and convenient movement and transportation.

Description

A beamless large transmission ratio deceleration pumping unit

technical field

The utility model relates to an oil exploitation machine, in particular to a beamless large transmission ratio deceleration pumping unit.

Background technique

At present, beam pumping units or beamless pumping units are widely used in oil fields. These two types of pumping units have mature technologies and are suitable for oil production under most conditions.

With the gradual development of conventional oil fields, low-permeability reservoirs have received more and more attention. my country's low-permeability oil reservoirs are rich in oil reserves, and the unproduced reserves of low-permeability oil reservoirs account for more than 50% of the total unproduced reserves in the country. However, the conventional pumping unit is limited by the reducer and cannot reduce the speed with a large transmission ratio. It is necessary to design a new type of pumping unit for application in low-permeability oil wells to reduce oil production costs and improve economic efficiency.

SUMMARY OF THE INVENTION

In order to overcome the defects of the above-mentioned prior art, the purpose of the present utility model is to provide a beamless large transmission ratio deceleration pumping unit, which can solve the problem that the transmission ratio of the conventional pumping unit transmission system is small through the application of the wave gear reducer. The problem of low working efficiency in low-permeability oil wells has the advantages of large transmission ratio, compact structure and high efficiency.

In order to solve the above-mentioned technical problem, the concrete technical scheme that the utility model adopts is as follows:

A beamless large transmission ratio deceleration pumping unit, including a motor 2, the power output end of the motor 2 is connected with the power input end of the wave gear reducer 5 through a V belt and a pulley 4, and the wave gear reducer is connected. The power output end of 5 is connected with the connecting end of the crank 6, and the crank 6 is provided with a plurality of pin holes 12, the pin holes 12 are connected with one end of the wire rope 9, and the other end of the wire rope 9 bypasses the pulley 7 and is connected with the Christmas tree 10; The free end of the crank 6 is connected with an arc-shaped counterweight 11 .

The pulley 7 is mounted on the top of the frame 8 , a small mounting frame 1 is provided at the bottom of the motor 2 , and a large mounting frame 3 is provided at the bottom of the corrugated reducer 5 .

The wire rope 9 is connected to the Christmas tree 10 perpendicularly to the direction of the oil wellhead after bypassing the pulley 7 .

The plurality of pin holes 12 are located on the central axis of the crank 6, and the stroke of the pumping unit can be changed by adjusting the connection position of the wire rope 9 between the plurality of pin holes 12.

The wave-tooth reducer 5 is connected with V-belts and pulleys 4 of different specifications to change the rotational speed.

The wave gear reducer 5 includes a steel wheel 15, a flexible wheel 13 and a wave generator 14 arranged from the outside to the inside. The wave generator 14 is installed in the flexible wheel 13, and the teeth at both ends of the long diameter of the flexible wheel 13 are just in line with the steel wheel 15. The teeth are completely meshed, and the teeth at the short diameter of the flexible wheel 13 are completely disengaged; the teeth of the flexible wheel 13 change with the long and short diameters of the wave generator 14, and the teeth of the steel wheel 15 are in different transition states of meshing or meshing out. .

The original cross section of the flex wheel 13 is circular, the teeth of the flex wheel 13 and the teeth of the steel wheel 15 have the same pitch; the number of teeth of the flex wheel 13 is less than that of the steel wheel 15 .

The maximum diameter of the wave generator 14 is larger than the diameter of the inner circle of the flex wheel 13; when the wave generator 14 rotates once, the flex wheel 13 rotates in the opposite direction through the difference in the number of teeth between the flex wheel 13 and the steel wheel 15 to obtain Reduced drive.

Compared with the prior art, the beneficial effects of the present utility model are:

The wave-tooth transmission deceleration pumping unit of the utility model utilizes the V-belt 4 and the wave-tooth reducer 5 for transmission, and has the advantages of large transmission ratio, compact structure, high efficiency and high movement precision. Compared with the cylindrical gear reducer with the same transmission ratio, the volume and weight are greatly reduced, so it is very convenient to move and transport. Compared with the conventional pumping unit, the utility model has significant advantages in improving pump efficiency and system efficiency, and is especially suitable for low permeability and low liquid volume oil wells.

Description of drawings

Figure 1 is a schematic diagram of the overall structure of the utility model.

FIG. 2 is a schematic structural diagram of the corrugated gear reducer 5 of the present invention.

FIG. 3 is a schematic structural diagram of the flexible wheel 13 in the wave-tooth reducer 5 of the present invention.

FIG. 4 is a schematic structural diagram of the wave generator 14 in the wave gear reducer 5 according to the present invention.

FIG. 5 is a schematic structural diagram of the steel wheel 15 in the corrugated gear reducer 5 of the present invention.

FIG. 6 is a schematic diagram of a partial structure of FIG. 2 of the present invention.

In the figure: 1. Small mounting frame; 2. Electric motor; 3. Large mounting frame; 4. V-belt; 5. Corrugated gear reducer; 6. Crank; 7. Pulley; 8. Frame; 9. Steel wire rope; 10. Christmas tree; 11. Circular counterweight; 12. Pin hole; 13. Flexible wheel; 14. Wave generator; 15. Steel wheel.

Detailed ways

The present utility model will be further described in detail below in conjunction with the accompanying drawings.

Referring to Figure 1, a beamless large transmission ratio deceleration pumping unit includes a motor 2, the power output end of the motor 2 is connected with the power input end of the corrugated gear reducer 5 through a V-belt and a pulley 4, The power output end of the corrugated gear reducer 5 is connected with the connection end of the crank 6. The crank 6 is provided with a plurality of pin holes 12. The pin holes 12 are connected with one end of the wire rope 9, and the other end of the wire rope 9 bypasses the pulley 7 and the Christmas tree 10. Connected; the free end of the crank 6 is connected with an arc-shaped counterweight 11 .

The pulley 7 is mounted on the top of the frame 8 , a small mounting frame 1 is provided at the bottom of the motor 2 , and a large mounting frame 3 is provided at the bottom of the corrugated reducer 5 .

The wire rope 9 is connected to the Christmas tree 10 perpendicularly to the direction of the oil wellhead after bypassing the pulley 7 .

The plurality of pin holes 12 are located on the central axis of the crank 6, and the stroke of the pumping unit can be changed by adjusting the connection position of the wire rope 9 between the plurality of pin holes 12.

The wave-tooth reducer 5 is connected with V-belts and pulleys 4 of different specifications to change the rotational speed.

Referring to FIGS. 2 to 6 , the wave gear reducer 5 includes a steel wheel 15 , a flexible wheel 13 and a wave generator 14 arranged from the outside to the inside. The wave generator 14 is installed in the flexible wheel 13 , and the flexible wheel 13 has two long diameters The teeth of the end just mesh with the teeth of the steel wheel 15 completely, and the teeth at the short diameter of the flexible wheel 13 are completely disengaged; or the different transition states that are engulfed.

Referring to FIG. 3 and FIG. 6 , the original cross section of the flex wheel 13 is circular, and the tooth pitch of the flex wheel 13 and the steel wheel 15 is the same; the number of teeth of the flex wheel 13 is less than that of the steel wheel 15 .

Referring to FIG. 4 , the maximum diameter of the wave generator 14 is larger than the inner diameter of the flexible wheel 13 .

When the wave generator 14 rotates once, the flex wheel 13 rotates in the opposite direction through the difference in the number of teeth between the flex wheel 13 and the steel wheel 15 to obtain a deceleration transmission.

The working principle of the utility model is:

The motor 2 transmits the power to the pulley through the output shaft counterclockwise, input to the wave generator 14 of the wave gear reducer 5 through the V-belt 4, decelerates with the steel wheel 15 through the flexible pulley 13, and the output shaft of the wave gear reducer 5 is directly connected The crank 6 converts the rotary motion into linear reciprocating motion, thereby completing the reversing of the pumping unit and realizing the oil extraction operation. Compared with the cylindrical gear reducer with the same transmission ratio, the gear reducer has a large transmission ratio, compact structure and high efficiency. Compared with the conventional pumping unit, the utility model has significant advantages in improving pump efficiency and system efficiency, and is especially suitable for low permeability and low liquid volume oil wells.

Obviously, the embodiments in the above specific embodiments are only used to illustrate the technical solutions of the present invention and not to limit them. Although the present invention has been described in detail with reference to the above specific embodiments, those of ordinary skill in the art can still understand the present invention. The specific embodiments of the present invention are modified or equivalently replaced, and any modification or equivalent replacement that does not depart from the spirit and scope of the present invention shall be covered by the scope of the present claims.

Claims (9)

1. The utility model provides a big drive ratio speed reduction beam-pumping unit of no walking beam, includes motor (2), its characterized in that, the power take off of motor (2) is connected with the power input end of ripples tooth reduction gear (5) through V area and band pulley (4), and the power take off of ripples tooth reduction gear (5) is connected with the link of crank (6), is equipped with a plurality of pinholes (12) on crank (6), and pinhole (12) are connected with the one end of wire rope (9), and wire rope (9) other end is walked around pulley (7) and is connected with production tree (10).

2. The walking-beam-free high-transmission-ratio speed-reducing pumping unit according to claim 1, characterized in that the pulley (7) is mounted at the top end of the frame (8), the small mounting frame (1) is arranged at the bottom of the motor (2), and the large mounting frame (3) is arranged at the bottom of the wave-tooth speed reducer (5).

3. The walking-beam-free high-transmission-ratio reduction pumping unit as claimed in claim 1, wherein the steel wire rope (9) is wound around the pulley (7) and then vertically connected with a Christmas tree (10) in the direction of an oil well mouth.

4. A walking-beam-free high-transmission-ratio speed-reducing oil pumping unit as claimed in claim 1, characterized in that the free end of the crank (6) is connected with a circular arc counterweight (11).

5. The walking-beam-free high-transmission-ratio speed-reducing pumping unit according to claim 1, wherein the pin holes (12) are located on a central axis of the crank (6), and the stroke of the pumping unit is changed by adjusting the connecting position of the steel wire rope (9) among the pin holes (12).

6. A walking-beam-free high-transmission-ratio reduction pumping unit as claimed in claim 1 or 2, wherein the wave-tooth reducer (5) is connected with pulleys of different diameters to change the rotating speed.

7. The walking-beam-free large-transmission-ratio speed-reducing pumping unit according to claim 1 or 2, wherein the wave-tooth speed reducer (5) comprises a steel wheel (15), a flexible wheel (13) and a wave generator (14) which are arranged from outside to inside, the wave generator (14) is arranged in the flexible wheel (13), teeth at two ends of the long diameter of the flexible wheel (13) are just completely meshed with teeth of the steel wheel (15), and teeth at the short diameter of the flexible wheel (13) are completely disengaged; the teeth of the flexible gear (13) are changed along with the long diameter and the short diameter of the wave generator (14) and are in different transition states of meshing in or meshing out with the teeth of the steel gear (15).

8. The walking-beam-free high-transmission-ratio deceleration pumping unit according to claim 7, characterized in that the original cross section of the flexible gear (13) is circular, and the tooth pitch of the flexible gear (13) is the same as that of the steel gear (15); the number of teeth of the flexible gear (13) is less than that of the steel gear (15).

9. A walking-beam-free high-transmission-ratio reduction pumping unit according to claim 7, wherein the maximum diameter of the wave generator (14) is larger than the inner circle diameter of the flexible gear (13); when the wave generator (14) rotates for a circle, the flexible gear (13) rotates through the difference of the number of teeth of the flexible gear (13) and the number of teeth of the steel gear (15) in the opposite direction, and the speed reduction transmission is obtained.

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