CN219654674U

CN219654674U - Beam-pumping unit

Info

Publication number: CN219654674U
Application number: CN202320867806.5U
Authority: CN
Inventors: 杨威; 苏亮; 郑重; 严水林
Original assignee: Oped Servo Motor Energy Saving System Co ltd
Current assignee: Oped Servo Motor Energy Saving System Co ltd
Priority date: 2023-04-18
Filing date: 2023-04-18
Publication date: 2023-09-08
Anticipated expiration: 2033-04-18

Abstract

The utility model provides a beam pumping unit which comprises a reduction gearbox, a motor and a gear reducer, wherein the gear reducer comprises a driving gear, a driven gear and a shell, the driven gear is connected with an input shaft of the reduction gearbox, the driving gear is connected with an output shaft of the motor, lubricating oil is contained in the shell, the motor is arranged on one side, away from the lubricating oil level, of the driven gear, the rotating speed range of the motor is 1000rpm-3000rpm, in a projection view along the axial direction of the output shaft of the motor, the center of the driven gear is connected with the center of the motor to form a vector line OD, the center of the driven gear vertically extends upwards to form a vector line OC, the included angle between OC and OD is Q, and the value range of Q is 0-135 degrees. Through holding lubricating oil and setting up the suitable mounted position of motor in the casing, can ensure that during operation, the bearing of meshing gear and the rotatory driving gear of bearing high speed can both obtain lubricating oil lubrication and cooling.

Description

Beam-pumping unit

Technical Field

The utility model relates to oil extraction equipment, in particular to a semi-direct-drive beam pumping unit, wherein IPC is classified as E21B43/00 (2006.01).

Background

Chinese patent CN217270148U discloses a beam pumping unit with a gear reducer, in which the temperature of the transmission gear and the support bearing of the gear reducer is raised due to the high-efficiency high-speed running speed of the motor, so that they are to be lubricated and cooled in an effective manner.

Other related terms and common knowledge can be found in the mechanical engineering handbook and the motor engineering handbook (writing group, 1997 edition 2 of mechanical industry press), the oil drilling and production equipment and process overview (Li Jizhi Chen Rongzhen, 1992 edition 1 of oil university press), and the Chinese patent CN217270148U, a kind of beam pumping unit and pumping unit.

Disclosure of Invention

In order to solve the problems in the prior art, the utility model provides a beam pumping unit which comprises a reduction gearbox, a motor and a gear reducer, wherein the gear reducer comprises a driving gear, a driven gear and a shell, the driven gear is connected with an input shaft of the reduction gearbox, the driving gear is connected with an output shaft of the motor, the output shaft of the motor is parallel to the input shaft of the reduction gearbox and is positioned on the same side of the gear reducer, lubricating oil is contained in the shell, the motor is arranged on one side, away from the lubricating oil level, of the driven gear, the rotating speed range of the motor is 1000rpm-3000rpm, in a projection view along the axial direction of the output shaft of the motor, the center of the driven gear is connected with the center of the motor to form a vector line OD, the center of the driven gear vertically extends upwards to form a vector line OC, the included angle Q is formed between OC and OD, and the value range of Q is 0-135 degrees.

Through holding lubricating oil in the casing and setting up the suitable mounted position of motor, can ensure when the operation, motor drive gear operation splashes lubricating oil to gear reducer casing inner chamber surface, utilizes gear reducer casing and lubricating oil to carry out heat exchange heat dissipation. Moreover, the bearings of the meshing gear and the driving gear which support the high-speed rotation can be lubricated and cooled by the lubricating oil.

Preferably, the rotation speed of the motor is between 1000rpm and 1500rpm, and the included angle Q is between 135 degrees and 60 degrees.

Preferably, the rotation speed of the motor is between 1500rpm and 2000rpm, and the included angle Q is between 135 degrees and 45 degrees.

Preferably, the rotation speed of the motor is between 2000rpm and 3000rpm, and the included angle Q is between 135 degrees and 0 degrees.

Further, the level of the lubricating oil contained in the housing needs to satisfy: before the motor runs, the initial oil level of the lubricating oil is slightly higher than the bottom of the driving gear; after the motor is operated, the lubricant level drops to a position slightly above the bottom of the driven gear.

Drawings

Fig. 1 is a schematic structural view of a beam pumping unit according to an embodiment of the present utility model.

Fig. 2 is an enlarged view of I of fig. 1.

Fig. 3 is an axial cross-sectional view of an embodiment of the utility model after the gear reducer is coupled to the motor.

Fig. 4 is a radial cross-sectional view of an embodiment of the utility model after the gear reducer is coupled to the motor.

Fig. 5 is a front view of one of the gear reducer and motor connection positions in an embodiment of the utility model.

Fig. 6 is a front view of a second connection position of the gear reducer and the motor according to the embodiment of the present utility model.

Fig. 7 is a front view of a third gear reducer and motor connection location in accordance with an embodiment of the present utility model.

Reference numerals:

the motor 1, the reduction gearbox 2, the gear reducer 3, the crank 4, the balance weight 5, the connecting rod 6, the walking beam 7, the horsehead 8, the bracket 9, the base 10, the driving gear 31, the driven gear 32, the ventilation plug 33, the shell 34,

Detailed Description

As shown in the drawings, the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. In describing the pumping unit structure of the present utility model, the walking beam is used as the upper side or the upper side, and the base is used as the lower side or the lower side. The embodiments described below by referring to the drawings are illustrative and intended to explain the present utility model and should not be construed as limiting the utility model.

The beam pumping unit of the utility model is improved in the beam pumping unit of the prior art, as shown in figures 1-2, the inherited structure comprises: the reduction gearbox 2, the output shaft of reduction gearbox 2 links to each other with the one end of crank 4, and the mid portion of crank 4 is connected with the lower extreme of connecting rod 6, and when reduction gearbox 2 drove crank 4 rotatory, crank 4 makes connecting rod 6 do the up-and-down motion, has become the up-and-down motion of connecting rod 6 with the rotary motion of motor. The upper end of connecting rod 6 is connected with the one end of walking beam 7, and the other end and the horse head 8 of walking beam 7 are connected, and support 9 supports in the intermediate position of walking beam 7, makes walking beam 7 both ends drive under the up-and-down motion of connecting rod 6, and walking beam 7 is the luffing motion around support 9 fulcrum, drives horse head 8 up-and-down motion. The balance weight 5 is arranged at the other end of the crank 4 and is used for balancing the power required by the up-and-down stroke of the pumping unit to be basically equal. The base 10 serves as a base member for supporting and mounting the above-described components and is located at the bottommost portion of the entire apparatus. The input shaft of the reduction gearbox 2 is fixedly connected with a gear reducer 3. The gear reducer 3 has a structure as shown in fig. 3 and 4, and comprises a driving gear 31 at an input end, a driven gear 32 at an output end, bearings and a housing 34 for fixing and supporting the gears, wherein the driving gear 31 and the driven gear 32 form a reduction gear pair. The output end of the driven gear 32 is in coupling transmission connection with an input shaft (not shown) of the reduction gearbox 2, the driving gear 31 is in coupling transmission connection with an output shaft of the motor 1, and the motor 1 and the reduction gearbox 2 are positioned on the same side of the gear reducer 3 and are parallel in axis.

The rotation speed of the motor 1 is designed to be 1000rpm-3000rpm, preferably 1000rpm,1250rpm,1500rpm,2000rpm,2500rpm,3000rpm. The speed and moment are reduced and increased through the gear reducer 3, and then the speed reducer is coupled with the reduction gearbox 2 for transmission. Analysis and experiments show that compared with the traditional design, the scheme ensures that the rotating speed of the motor 1 runs in a high-speed interval with high efficiency performance of the motor, the motor efficiency can be generally more than 95%, and meanwhile, the motor size can be reduced, so that the efficiency of the pumping unit is improved, and the energy consumption of the pumping unit is reduced.

The improved design of the utility model is as follows:

1. the inner cavity of the shell of the gear reducer 3 is provided with lubricating oil, as shown in fig. 4, the lubricating oil level adopts a double-oil-level design, namely, the lubricating oil level under the lubrication condition and the initial oil level meeting the heat dissipation of the gear are met. The initial oil level of the lubricating oil is associated with the lowest position where the motor 1 is installed, and the initial oil level is required to be slightly higher than the bottom of the driving gear 31. When the motor drives the gear to operate, the gear operates to splash lubricating oil on the inner cavity surface of the gear reducer shell, and at the moment, the lubricating oil level is lowered to a lubricating oil level position capable of meeting gear lubrication, namely, the lubricating oil level position is slightly higher than the bottom of the driven gear 32 at the moment. The lubricating oil splashes to the inner cavity surface of the gear reducer shell, and the gear reducer shell can exchange heat with the lubricating oil for heat dissipation;

2. since the motor 1 operates in a high-speed range of high efficiency performance of the motor, heat generated by gear engagement and bearing rotational friction is large, and therefore, heat dissipation needs to be considered. If the motor turns clockwise from the shaft extension end, the motor turns counterclockwise from the motor mounting side as shown in fig. 4-7, and the motor is mounted on the left side of the vertical center line of the driven gear 32, i.e. the motor 1 is mounted on the side of the driven gear 32 away from the lubrication oil level, so that the bearings of the driving gear which facilitate gear engagement and support high-speed rotation can be lubricated and cooled by more sufficient lubrication oil. The installation position of the motor 1 is also related to the rotation speed of the motor, when the rotation speed of the motor changes, the installation position of the motor 1 can be adjusted from the lowest position of the diagram 5 to the highest position of the diagram 7 so as to achieve the optimal lubrication and cooling effect, in order to more conveniently express the installation position of the motor 1, the center of the driven gear 32 is taken as O, the driven gear extends vertically upwards from the point O to form a vector OC, the center of the motor is taken as D, the point O is connected with the vector OD to form a vector OD, the vector OC forms an included angle Q with the vector OD, and the included angle Q is 135 degrees when the diagram 5 is at the lowest position; the angle Q is 90 degrees at the 6 position shown in the drawing, and 0 degree at the highest position of the motor shown in fig. 7. In general, the lower the rotational speed of the motor 1, the closer the motor is mounted to the driven gear 32 from the lubricating oil level region, as shown in fig. 5, the motor lowest position; the higher the rotational speed of the motor 1, the farther the motor 1 is mounted from the driven gear 32 to the lubricant level region, as shown in fig. 7, the higher the motor is.

In order to obtain a good lubricating and cooling effect, the working life of the gear reducer is prolonged, meanwhile, noise is reduced, and further optimization design is required for the rotating speed and the installation position of the motor. For this purpose, tests were carried out with the beam-pumping unit of the above embodiment.

Specifically, the rotational speed of the motor is set at the rated voltage and rated frequency, the lubricating oil meets the oil level requirement of the embodiment, and the motor is mounted at different positions for continuous operation test. During this period, if the noise of the gear reducer suddenly changes, it indicates that the bearings of the meshing gear and the driving gear supporting the high-speed rotation cannot be lubricated and cooled by the lubricant.

The results are shown in the following table:

the foregoing examples illustrate only a few embodiments of the utility model, which are described in detail and are not to be construed as limiting the scope of the utility model. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the utility model, which are all within the scope of the utility model.

Claims

1. The utility model provides a beam-pumping unit, includes reducing gear box (2), motor (1), gear reducer (3) include driving gear (31), driven gear (32), casing (34), the input shaft of reducing gear box (2) is connected to driven gear (32), the output shaft of motor (1) is connected to driving gear (31), the output shaft of motor (1) is parallel and be located the same side of gear reducer (3) with the input shaft of reducing gear box (2), a serial communication port, casing (34) is interior to have lubricating oil, motor (1) are installed in driven gear (32) and are left one side of lubricating oil level, the rotational speed scope of motor (1) is 1000rpm-3000rpm, in the projection diagram along motor output shaft axial, driven gear (32) center links to each other with motor (1) center and forms vector line OD, and the center vertical upward extension of driven gear (32) forms vector line OC, OC to the OD contained angle be Q, and the value scope of Q is 0 degree-135 degrees.

2. A beam-pumping unit according to claim 1, wherein the angle Q is between 135 degrees and 60 degrees when the rotational speed of the motor (1) is between 1000rpm and 1500 rpm.

3. A beam-pumping unit according to claim 1, wherein the angle Q is between 135 degrees and 45 degrees when the rotational speed of the motor (1) is between 1500rpm and 2000 rpm.

4. A beam-pumping unit according to claim 1, wherein the rotation speed of the motor (1) is between 2000rpm and 3000rpm, and the included angle Q is between 135 degrees and 0 degrees.

5. A beam-pumping unit according to claim 1, wherein the initial level of lubricating oil is slightly higher than the bottom of the driving gear (31) before the motor is operated; after the motor is operated, the lubricant level drops to a position slightly above the bottom of the driven gear (32).