CN114352705A

CN114352705A - Combined transmission system of tower type oil pumping unit

Info

Publication number: CN114352705A
Application number: CN202011037187.4A
Authority: CN
Inventors: 毛宏伟; 王文翰
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-09-28
Filing date: 2020-09-28
Publication date: 2022-04-15

Abstract

The invention relates to a combined transmission system of a tower type pumping unit, which consists of a speed reducing mechanism, wherein a driving gear embedded in an output shaft of a frequency-reducing low-speed asynchronous servo motor is meshed with a driven gear ring on a rope pulley. The combined transmission system solves the problems that the tooth clearance between the driving gear of the output shaft of the motor and the driven gear ring on the rope pulley can be adjusted and the gear box is sealed, so that the speed reduction transmission structure is more compact, simple and durable, the manufacturing cost is lower, the maintenance points are fewer, and the mechanical efficiency is higher.

Description

Combined transmission system of tower type oil pumping unit

Technical Field

The invention relates to a combined transmission system of a tower type pumping unit of mechanical oil extraction equipment in the petroleum industry

Background

The tower type oil pumping unit has the advantages of high intelligent degree, high efficiency, energy conservation, prolonged service life of the oil pumping rod and the oil well pump, low cost and large discharge capacity, can partially replace the submersible electric pump with high energy consumption and high cost, and is gradually accepted by the petroleum industry. However, the key that restricts market promotion is that the maintenance difficulty of the conventional tower type pumping unit speed reducer is large and the service life of the steel wire rope is short; the tower type motor direct-drive oil pumping unit is limited by overhigh manufacturing cost of the motor, the problems that the fatigue life of a steel wire rope is too short, the oil well equipment is seriously damaged due to the wind load influence of a broadband traction sucker rod and the like cannot be solved, and the popularization and the application of the market are restricted. The combined transmission system of the original tower type pumping unit is originally a primary gear speed reduction plus a primary V belt, a synchronous belt and a secondary gear speed reduction plus a primary belt speed reduction, and the rated rotation speed of a motor is 300-600 turns. The V belt of the combined transmission system of the tower type pumping unit is a vulnerable part, and the normal operation of the pumping unit can be maintained only by frequently adjusting the tension degree of the V belt in use; the intermediate machine has high cost and long purchase period by adopting an imported synchronous belt and needs to be replaced forcibly at regular intervals; the two-stage gear of the large-scale machine has high deceleration noise, the rotating speed of a driving gear on an output shaft of the motor is 600 revolutions, the driving gear is not suitable for dipping oil for lubrication, and the sealing problem of lubricating oil is difficult to solve by using a welding gear box for splash lubrication. These problems restrict the popularization and spread of tower pumping units. Therefore, a new tower type oil pumping unit needs to be developed, the transmission efficiency is improved, the problem of welding the gear box seal and a combined transmission system with higher cost performance is solved, and the use requirements of the market are met.

The combined transmission system of the tower type pumping unit is driven by a 6-8-stage 80-180 conversion frequency-reduction asynchronous servo motor, an output shaft of the motor is embedded with a driving gear which is meshed with a driven gear ring on a rope pulley, and the rope pulley is driven to drive a sucker rod to move up and down to complete oil extraction work. The low-speed large torque of the frequency-reduction low-speed asynchronous servo motor selected by the novel combined transmission system replaces the speed reduction links of a V belt, a synchronous belt and a second-stage gear, and the cost increase part of the motor is lower than the comprehensive cost of eliminating a first-stage V belt, a synchronous belt and a gear. The novel combined transmission system reduces the transmission link, removes two bearings of one shaft, has higher operation efficiency, removes a V belt, a synchronous belt and a primary gear, has more compact transmission structure, reduces the maintenance amount of the oil pumping unit, integrates the technical characteristics and the economic intersection point of gear reduction transmission and a motor, and improves the cost performance of the combined transmission system.

A gear in a gear box of a traditional transmission system is fixed on a transmission shaft, sealing measures are convenient to take, an existing driving gear is embedded on an output shaft of a motor, a combined transmission system of an oil pumping unit needs to replace motors of different models according to oil well requirements, therefore, the position of the motor needs to be moved by adjusting the meshing gap between the driving gear embedded on the output shaft of the motor and a driven gear ring on a rope pulley, and the sealing of the output shaft of the motor is the key of success or failure of the combined transmission system. The measure and the method for adding the sealing adjusting plate to the sealing device of the gear box solve the group of contradictions of adjusting the sealing of the motor and the output shaft, and make the combined transmission system more accord with the market requirement of environmental protection.

The combined transmission system is convenient to optimize the structure according to the needs of oil wells, can be designed into a compact structure according to the places limited by the occupied area of pumping equipment such as offshore platforms and the like besides the requirement of land use, meets the installation requirement that the well spacing of offshore oil production platforms is only 1.8-2 meters, fills the blank of mechanical oil production of sucker-rod pumps of offshore platforms, and enables the tower type oil pumping unit to be suitable for different requirements of oil wells in different areas.

The attached drawings of the specification:

FIG. 1 is a front view of a first embodiment of the patented compound transmission system of the invention

FIG. 2 is a left side view of the first embodiment of the patented compound transmission system of the invention

FIG. 3 is a top view of a first embodiment of the patented compound transmission system of the invention

FIG. 4 is a front view of a second compact embodiment of the combination drive system of the present invention

FIG. 5 is a schematic view of a first embodiment of a compound transmission bracket of the compound transmission system of the present invention

FIG. 6 is a schematic view of a third embodiment of the combination drive system of this invention

FIG. 7 is a schematic view of the first embodiment of the patented combined transmission system installed on the upper platform

FIG. 8 is a schematic view of a tower-type pumping unit according to the present invention

FIG. 9 is a front view of the gear box of the patented combination transmission system of the invention

FIG. 10 is a schematic view of the output shaft of the sealed motor of the gearbox of the transmission system of the invention

FIG. 11 is a top view of the output shaft of the sealed motor of the gearbox of the patented combination transmission system of the invention

The parts in the drawings are numbered as follows:

1. a driven gear ring; 2. a sheave; 3. a gear case; 4. a drive train support; 5. a drive train base; 6, a motor base; 7. a motor; 8. a brake; 9. a driving gear; 10. an upper platform; 11. motor guide rail 12, tower; 13. a motor output shaft sealing device; 14. sealing the cover plate; 15. a seal adjustment plate; 16. the sealing plate 17 is used for sealing the oil felt strip; an O-shaped seal ring; 19. the seal adjustment plate fastens the bolt.

SUMMARY OF THE PATENT FOR INVENTION

The combined transmission system of the tower type pumping unit comprises: a driven gear ring 1; a rope wheel assembly 2; a gear case 3; a transmission system support 4; a transmission system base 5; a motor base 6; a motor 7; a brake 8; a driving gear 9; a motor guide rail 11; a tower 12; a motor output shaft sealing device 13; a sealing cover plate 14; a seal adjustment plate 15; a sealing plate 16; sealing the felt strip 17; an O-ring 18; the seal adjustment plate fastens the bolt 19.

The combined transmission system of the tower type pumping unit is arranged on an upper platform 10 at the top of a tower 12, a motor base 6 of a motor 7 is arranged at the rear side of a transmission system support 4, an output shaft of the motor 7 is inlaid with a driving gear 9, the driving gear 9 is meshed with a driven gear ring 1 inlaid on a rope pulley 2, the rope pulley 2 is arranged in the middle of the transmission system support 4, a labyrinth anti-seepage gear box 3 is arranged outside the driving gear 9 and the driven gear ring 1 for lubrication, a sealing adjusting plate 15, an O-shaped sealing ring 18 and a sealing felt strip 17 are arranged in a sealing cover plate 14 of a sealing device 13 of the output shaft of the motor 7 of the gear box 3, the sealing adjusting plate 15 is fixed in the sealing device 13 by a sealing adjusting plate fastening bolt 17, a sealing plate 16 at the outer side of the gear box 3, the transmission system support 4 is connected with the motor base 6 by a connecting hole by a bolt, and a tail shaft of the motor 7 is provided with a brake 8, the combined transmission system is arranged on an upper platform 10 of the tower type oil pumping machine, and the upper platform 10 is fixed on a tower 12 of the tower type oil pumping machine.

The following detailed description of the preferred embodiments of the present invention, taken in conjunction with the accompanying drawings, will make the advantages and features of the invention easier to understand for those skilled in the art and will thus define the scope of the invention more clearly.

Please refer to fig. 1, fig. 2, fig. 3, fig. 5, fig. 7, fig. 8, fig. 9, fig. 10, and fig. 11, which illustrate an embodiment of the present invention, including:

a120-turn frequency-reduction low-speed high-torque asynchronous servo motor for a combined transmission system of a tower type pumping unit reduces a primary speed reduction transmission link, and a gear box of the combined transmission system can meet the condition that a driving gear on an output shaft of a movable adjusting motor is meshed with a driven gear ring on a rope pulley to form a gear gap, can ensure that the gear box of the output shaft of the motor is sealed to prevent oil leakage, improves the operation efficiency and reduces the manufacturing and maintenance cost.

The implementation scheme is as follows: a120-rotation motor 7 is arranged on a motor base 6 on the left side of a transmission system bracket 4, a driving gear 9 arranged on an output shaft of the motor 7 drives a driven gear ring 1 with the diameter of 1200mm assembled with a rope pulley 2 to be meshed with the driven gear ring 1 with the diameter of 1200mm, the rope pulley 2 with the diameter of 1000mm is driven to rotate positively and negatively, a polished rod and a counterweight steel wire rope fixed on two sides of a rope groove of the rope pulley 2 are driven to complete oil extraction work, a brake device 8 is arranged on a tail shaft of the motor 7, a gear box 3 of a combined transmission system is of a welding structure, 10mm of regulating quantity in four directions of a sealing device 13 of the gear box 3 meets the requirement of gear assembly regulating precision, a sealing cover plate 14 in a motor output shaft sealing device of the gear box 3 is provided with a sealing regulating plate 15, an O-shaped sealing ring 18 and a sealing felt strip 17, a sealing plate 16 is arranged outside the gear box 3 to prevent oil leakage and water inflow, when the gear box 3 is installed, a gap between the driving gear 9 on the output shaft of the motor 7 and the driven gear ring 1 embedded in the rope pulley 2 is firstly regulated, fixing a motor 7 on a motor base 6; and then a sealing adjusting plate 15 is fastened in a sealing device 13 of the gear box 3 by a sealing adjusting plate fastening bolt 19 to ensure that the sealing device 13 of the gear box 3 of the output shaft of the motor 7 is sealed, the gear box 3 is seamed, a mounting hole which is fixed with the upper platform 10 by a bolt is arranged on the transmission system support base 5, and the upper platform 10 is fixed on a tower 12 of the tower type pumping unit.

Please refer to fig. 4, 9, 10, and 11, which illustrate a second embodiment of the present invention:

a compact combined transmission system of a tower pumping unit developed according to the narrowness of an offshore oil production platform is disclosed: a120-rotation motor 7 is arranged on a motor base 6 below a rope wheel 2 with the diameter of 1000mm, a motor guide rail 11 is arranged on the motor base 6, the motor 7 is connected with a transmission system support 3 and can move back and forth so as to be convenient to adjust and replace, the upper end of the motor 7 and the lower end of the rope wheel 2 have a space of more than 30mm, a driving gear 9 arranged on an output shaft of the motor 7 drives a driven gear ring 1 with the diameter of 1600mm assembled with the rope wheel 2 to be meshed to drive the rope wheel 2 to rotate forward and backward, a polished rod and a counterweight steel wire rope fixed on two side rope grooves of the rope wheel 2 are driven to complete oil extraction work, a brake device 8 is arranged on a tail shaft of the motor 7, the gear box 3 adopts a labyrinth mode to prevent oil leakage and water inflow, a sealing adjusting plate 15, an O-shaped sealing ring 18 and a sealing oil felt strip 17 are arranged on the inner side, after the gear clearance between the driving gear 9 on the output shaft of the motor 7 and the driven gear ring 1 on the rope wheel 2 is adjusted, the motor 7 is fixed on the motor base 6, the sealing adjusting plate 15 is arranged in the sealing device 13 of the gear box 3 by the sealing adjusting plate fastening bolt 19, the gear box 3 is seamed after the sealing device 13 of the gear box 3 of the output shaft of the motor 7 is sealed, the transmission system support base 5 is provided with a mounting hole which is fixed with the upper platform 10 by a bolt, and the upper platform 10 is fixed on the tower 12 of the tower type oil pumping unit.

Please refer to fig. 1, fig. 6, fig. 9, fig. 10, and fig. 11, which illustrate a third embodiment of the present invention:

the tower type pumping unit combined transmission system comprises: the 120-turn motor 7 is arranged on a motor base 6 at the rear side of a rope wheel 2 of a transmission system support 4, a driving gear 9 arranged on an output shaft of the motor 7 drives a 1600 mm-diameter driven gear ring 1 assembled with the rope wheel 2 to be meshed with the driven gear ring 1 to drive the 1000mm rope wheel 2 to rotate positively and negatively to drive a polished rod and a counterweight steel wire rope fixed at two sides of a rope groove of the rope wheel 2 to finish oil extraction work, a brake device is arranged on a tail shaft of the motor 7, the gear box 3 adopts a labyrinth mode to prevent oil leakage and water inflow, after a gear gap between the driving gear 9 arranged on the output shaft of the motor 7 and the driven gear ring 1 arranged on the rope wheel 2 is adjusted, the motor 7 is fixed on the motor base 6, a sealing adjusting plate 15 is welded in a sealing device 13 of the gear box 3 to ensure that the sealing device 13 of the gear box 3 at the output shaft of the motor 7 is sealed, the gear box 3 is then seamed, and the transmission system support base 5 is provided with an installation hole which is fixed with an upper platform 10 by a bolt, the upper platform 10 is fixed on the tower 12 of the tower type oil pumping machine.

The above examples are only for describing the preferred embodiments of the present invention, and are not intended to limit the scope of the present invention, and various modifications and improvements of the technical solution of the present invention by those skilled in the art should fall within the protection scope defined by the claims of the present invention without departing from the spirit of the present invention.

Claims

1. A tower beam-pumping unit combination transmission system characterized in that, includes: a driving gear is arranged on a 6-level and 8-level frequency reduction low-speed asynchronous servo motor with a rated rotating speed of 80-180 revolutions and a motor output shaft, the number range of the driving gear is 19-25 teeth, the driving gear is meshed with a driven gear ring assembled on a rope pulley, the number range of the driven gear ring is 130-200 teeth, the reduction ratio range is 5-8, the driven gear ring is fixed on the rope pulley through a fixing pin and a bolt, a sealing cover plate, a sealing adjusting plate, an O-shaped sealing ring and a sealing oil felt strip are arranged in a sealing device of a labyrinth welding gear box, the gear box sealing device on the motor output shaft is adjusted and embedded in a gap of the driven gear ring on the rope pulley, and the sealing adjusting plate is screwed on the gear box sealing device through a sealing adjusting plate bolt, so that the gear gap of the motor output shaft is adjustable, and the sealing and tight fit of the motor output shaft are ensured.

2. The compact tower pumping unit combination transmission system of claim 1, wherein: the motor can be arranged on a transmission system bracket right below or laterally below the rope pulley and the driven gear ring according to the installation size requirement of the oil pumping unit of the oil well, so that the area of the combined transmission system is reduced, and the area of the upper platform meets the requirement of narrow well spacing; or the combined transmission system with the weight reducing function is directly fixed on the frame of the offshore oil production platform, so that the installation requirement of the oil well interval of the offshore oil production platform is met.

3. The gearbox of a tower pumping unit combination drive train of claim 1, wherein: the gear box sealing device adopts a mode of welding a sealing adjusting plate after adjusting a gear clearance to seal: the gear box sealing device is characterized in that a sealing oil felt strip is arranged on the inner side of the gear sealing ring, an oil baffle plate is arranged in the gear box sealing device to baffle splashed lubricating oil to reduce the pressure of side end sealing, and after a gear gap between a driving gear on the motor output shaft and a driven gear ring on the rope pulley is adjusted and fixed, a sealing adjusting plate is welded on the gear box sealing device to ensure tight sealing and joint of the motor output shaft.

4. The combined transmission system of the tower type pumping unit according to claim 1, wherein: the motor is arranged at the rear side of the transmission system support and is parallel to the rope pulley, the driving gear on the output shaft of the motor is arranged at the left side of the motor, and the whole combined transmission system is positioned at the position, close to the front, of the center of the upper platform.

5. The combined transmission system of claim 1, which can be used in other devices to replace reducers.

6. The tower pumping unit combination transmission system bracket of claim 1 can be installed with motors of different base numbers, and is matched with motor bases of different sizes, so that adjustment and replacement according to oil well load changes are facilitated.