CN202441337U

CN202441337U - Double-decelerating and double-balancing energy saving oil pumper with positive torque

Info

Publication number: CN202441337U
Application number: CN2012200426636U
Authority: CN
Inventors: 梁宏宝; 陈颖; 李冰; 王岩; 赵玲; 梁宇宁; 刘恒溢
Original assignee: Northeast Petroleum University
Current assignee: Northeast Petroleum University
Priority date: 2012-02-10
Filing date: 2012-02-10
Publication date: 2012-09-19
Anticipated expiration: 2022-02-10

Abstract

The utility model discloses a double-decelerating and double-balancing energy saving oil pumper with positive torque, which solves defects of large installed power, low system power, poor motion performance and the like in the traditional oil pumper. The oil pumper is additionally provided with a balanced decelerating mechanism; a motor and a decelerator as well as the decelerator and the balanced decelerating mechanism are respectively connected with each other by shaft couplings; the balanced decelerating mechanism is connected with a secondary crank balancing block; in addition, the oil pumper adopts a flexible oil pumping rope for transmission and reversion; therefore, small energy transmission links are achieved. Through secondarily decelerated and secondarily balanced, the oil pumper disclosed by the utility model achieves a target that a crank torque curve and motor power are constantly positive values and also achieves a purpose of reducing energy consumption.

Description

The two positive moment of torsion energy-saving pumping units of balance of two decelerations

Technical field

The utility model relates to used lifting device in the oil recovery field, oil field, and concrete is a kind of novel energy-conserving oil pumper.

Background technology

In current mechanical oil recovery, beam pumping unit accounts for more than 70% of oil pumper, and is simple to operate because of it, reliability is high gains great popularity.But because the beam pumping unit polished rod load is the periodicity fluctuating load; In the one-period of work; Oil pumper load on upstroke and down stroke is unbalanced, though in beam pumping unit, adopt balance weight to improve this non-equilibrium state because the underground working of oil well is different; And constantly change, exist negative torque to cause system motor generating and system's poor efficiency.Because the superimposed curves of the torque curve that torque curve and the crank counterbalance of polished rod load on the reducer crank axle produces, i.e. the fluctuation of net torque curve on the crank axle is very big, and negative value occurs; And the rotating speed and the moment of torsion substantial constant of the output of common threephase asynchronous are constant; For satisfying the requirement of peak torque, the oil pumper more powerful motor of adapted of having to causes motor power (output) factor and operating efficiency to reduce; Particularly negative torque moment, electric efficiency is lower.Defectives such as so the common problem that beam pumping unit exists is that installed power is big, system effectiveness is low, and energy consumption is big, and the oil pumper exercise performance is poor, and power of motor and reducer output shaft torque ripple are big, and has big negative value, and pay(useful) load is low, and cost performance is low.

Summary of the invention

The purpose of the utility model provides a kind of energy-saving pumping unit; This oil pumper operates steadily, simple in structure, reduced the energy transmission link, reduced motor power output and reducing gear torque ripple; And can realize power of motor permanent on the occasion of, have energy-efficient characteristics.

For realizing the foregoing invention purpose; The technical scheme that the application adopts is: the two positive moment of torsion energy-saving pumping units of balance of two decelerations; Comprise motor, reducer, balance reducing gear, one-level crankshaft balance weight, secondary crankshaft balance weight, derrick and flexible oil pumping rope, wherein between motor and the reducer, be connected through shaft coupling respectively between reducer and the balance reducing gear, said balance reducing gear comprises power shaft, jackshaft and the output shaft that sets gradually from top to bottom; Above-mentioned three are parallel to each other and are positioned on the same vertical plane; Gear drive between each connects the one-level crankshaft balance weight on the output shaft, on the crank of one-level crankshaft balance weight roller is set; The other end of power shaft connects the secondary crankshaft balance weight, and the rotating ratio of power shaft and output shaft is 2:1; The top rail one end fixing flexible of said derrick is pumped and is restricted, and the other end is provided with guide wheel, and flexible oil pumping rope passes from the roller lower end and on the guide wheel successively, its free end connection sucker rod.

The invention has the beneficial effects as follows: the two positive moment of torsion energy-saving pumping units of balance of this pair deceleration; Adopt reducer to connect the secondary speed-reducing mode of balance reducing gear; Be connected with the secondary crank counterbalance on the power output shaft of balance reducing gear, the secondary crank counterbalance can more effectively balance the minimum value and the maximum value of reducer moment of torsion, makes the reducer output shaft torque ripple steady; And do not have negative value, promptly the degree of balance of oil pumper increases; Adopt the derrick that caters to system architecture also greatly to reduce the suspension point moment of torsion in addition, the maximal rate of suspension point and the peak value of acceleration all decline to a great extent, and maximum polished rod load reduces, and load fluctuation diminishes; Directly adopt shaft coupling to connect between reducer and the balance reducing gear, so both reduced the transmission energy loss, improved transmission efficiency again; Adopt flexible oil pumping rope to replace the linkage oil pumping in addition, improved the power performance of complete machine; The oil pumper operating ratio that provides of the application is more steady in a word, has reduced power of motor, has reached energy-efficient purpose.

Description of drawings

Fig. 1 is the structural representation of the application's oil pumper.

Fig. 2 is the lateral view of Fig. 1.

Fig. 3 is the structural representation of balance reducing gear.

The specific embodiment

Below in conjunction with accompanying drawing the application is further described:

Combine shown in Figure 2 by Fig. 1: the two little positive moment of torsion energy-saving pumping units of balance of two decelerations; Comprise motor 1, reducer 2, balance reducing gear 3, one-level crankshaft balance weight 5, secondary crankshaft balance weight 6, derrick 7 and flexible oil pumping rope 8; Wherein be connected through shaft coupling between motor 1 and the reducer 2; Also be connected between reducer 2 and the balance reducing gear 3 through shaft coupling, but because the needs in space also are provided with bearing support 4 between shaft coupling and balance reducing gear; By shown in Figure 3: said balance reducing gear 3 comprises power shaft 31, jackshaft 32 and the output shaft 33 that sets gradually from top to bottom; Above-mentioned three are parallel to each other and are positioned on the same vertical plane; Gear drive between each connects one-level crankshaft balance weight 5 on the output shaft 33, roller 9 is set on the crank of one-level crankshaft balance weight 5; The other end of power shaft 31 connects secondary crankshaft balance weight 6, and power shaft 31 is 2:1 with the rotating ratio of output shaft 33; By shown in Figure 2: the top rail one end fixing flexible of said derrick 7 oil pumping rope 8, the other end is provided with guide wheel 10, flexible oil pumping rope 8 successively from roller 9 lower ends and guide wheel 10 upper ends pass, its free end connects sucker rod 11.

Claims

1. the two positive moment of torsion energy-saving pumping units of balance of two decelerations; Comprise motor, reducer, balance reducing gear, one-level crankshaft balance weight, secondary crankshaft balance weight, derrick and flexible oil pumping rope; Wherein between motor and the reducer, be connected through shaft coupling respectively between reducer and the balance reducing gear; It is characterized in that: said balance reducing gear comprises power shaft, jackshaft and the output shaft that sets gradually from top to bottom, and above-mentioned three are parallel to each other and are positioned on the same vertical plane, gear drive between each; Connect the one-level crankshaft balance weight on the output shaft; On the crank of one-level crankshaft balance weight roller is set, the other end of power shaft connects the secondary crankshaft balance weight, and the rotating ratio of power shaft and output shaft is 2:1; The top rail one end fixing flexible of said derrick is pumped and is restricted, and the other end is provided with guide wheel, and flexible oil pumping rope passes from the roller lower end and on the guide wheel successively, its free end connection sucker rod.