CN201080814Y

CN201080814Y - Beam type energy-saving oil pump

Info

Publication number: CN201080814Y
Application number: CNU2007201027223U
Authority: CN
Inventors: 任晓明; 梁新文; 樊世耀; 郭冬梅
Original assignee: Individual
Current assignee: Individual
Priority date: 2007-09-30
Filing date: 2007-09-30
Publication date: 2008-07-02
Anticipated expiration: 2017-09-30

Abstract

The utility model relates to an oil pumping machinery used in oil field, in particular to a walking beam type energy-saving oil pump unit, which solves the problem that the prior walking beam type oil pump unit is difficult to realize real energy saving due to the limitation of work principle and structure. The utility model comprises a central support, a walking beam arranged at top end of the central support, a sucker rod, and a crank that is driven by motor and speed reducer and arranged fixedly with a balance block at one end, wherein one end of the walking beam is arranged fixedly with a horse head that is connected with the sucker rod by steel cable, the other end of the walking beam is connected with the crank by lever, an energy storage utilization device is arranged fixedly at two ends of the central support below the upper walking beam, the energy storage utilization device comprises a fixed seat that is slantingly arranged fixedly on the central support and provided with a through-hole, and a support rod, one end of the support rod is hinged with the walking beam, the other end of the support rod goes through the through-hole on the fixed seat, an adjusting press sleeve is arranged fixedly on the support rod, a spring is sleeved between the fixed seat and the adjusting press sleeve on the support rod. The utility model has the advantages of simple and reasonable structure, good energy-saving effect. The utility model is applicable for walking beam type oil pumping units of all other balance types.

Description

Beam type energy-saving oil pumping machine

Technical field

The utility model relates to the oil pumping machinery that use in the oil field, is specially a kind of beam type energy-saving oil pumping machine.

Background technology

Existing beam pumping unit, comprise central bracket, be arranged at the walking beam, oil pumping pump rod on central bracket top and drive the crank that an end that rotates is fixed with balance weight by motor, reducer, walking beam one end is fixed with the horse head that connects the oil pumping pump rod by cable wire, and the other end is connected with crank by connecting rod.Crank drives balance weight and turns round continuously under the driving of motor, reducer, driving walking beam by connecting rod is that center of rotation back and forth moves up and down with the central bracket top, and then drive the oil pumping pump rod by horse head, cable wire and move back and forth vertically, realize the extraction of layer depth place crude oil over the ground.In entire work process, crank drives the balance weight process of running continuously, pause kinetic energy loss when not having commutation under the driving of motor, reducer; And oil pumper is upwards when oil pumping and backhaul, and motor rated speed running input power is maximum in commutation instantaneous power maximum, energy output, and when oil pumper was upwards pumped, the balancing gravity acting increased the potential energy of oil pumping pump rod, and speed is reduced to zero simultaneously.At this moment the walking beam of oil pumper, horse head, connecting rod etc. all pause when commutation, and the pump rod of pumping simultaneously, fluid deadweight also pause when commutation, and kinetic energy all is converted into potential energy (also can be regarded as kinetic energy rejection), causes the energy loss of complete machine.In addition, in each oil pumping cyclic process, the walking beam of oil pumper, horse head, connecting rod etc., and oil pumping pump rod, fluid need the motor acting, makeup energy from the starting that focuses on after commutation pauses; Inertia in the time of also need overcoming commutation simultaneously will expend motor power in a large number, cause the problem of energy waste.Operating principle and the structural limitations studying carefully its main reason and be by beam pumping unit cause, and particularly because to the understanding limitation of course of work mechanism, thereby are difficult to realize truly energy-conservation.

Summary of the invention

The utility model particularly to the understanding limitation of course of work mechanism, is difficult to realize real problem of energy saving at the restriction of existing beam pumping unit because of operating principle and structure, and a kind of mechanical efficiency height, beam type energy-saving oil pumping machine that energy consumption is low are provided.

The utility model is to adopt following technical scheme to realize: beam type energy-saving oil pumping machine, comprise central bracket, be arranged at the walking beam on central bracket top, the oil pumping pump rod, with by motor, reducer drives the crank that an end that rotates is fixed with balance weight, walking beam one end is fixed with the horse head that connects the oil pumping pump rod by cable wire, the other end is connected with crank by connecting rod, walking beam bottom center support both sides are fixed with energy respectively and store use device, described energy stores use device and comprises the holder that has through hole that tilts to be fixed on the central bracket, support bar, support bar one end and walking beam are hinged, the other end passes the through hole on the holder, be fixed with the adjusting gland on the support bar, be with spring between support bar upper fixed seat and the adjusting gland.In order to fix spring, (deformation quantity is inconsistent) compressed in not run-off the straight everywhere when guaranteeing length of spring compressed, and both ends of the spring is fixed with spring base and the contact block that is placed on the support bar.

During work, walking beam is in the process that moves up and down, the support bar that drives the energy storage use device of central bracket both sides tilts to pump, when walking beam in motion during near top dead centre or lower dead center (reversal point), the adjusting gland that is fixed on the support bar presses contact block, make the compression that is placed on the support bar, kinetic energy is converted into elastic potential energy (being that energy stores), when moving to reversal point, elastic potential energy is converted into kinetic energy (being that energy discharges), the inertia force when overcoming commutation, walking beam is oppositely released, continue backhaul, need not additionally do work by motor, and then conserve energy.

Compared with prior art, the utility model is set up energy and is stored use device in walking beam bottom center support both sides, with the walking beam of oil pumper, horse head, connecting rod etc., and oil pumping pump rod, fluid are stored from the elastic potential energy that the kinetic energy that focuses on commutation is converted into spring, can overcome inertia force during release commutates, need not additionally do work by motor, and then conserve energy.

The energy that described energy stores use device stores and exergonic big I is regulated reaching best energy-saving effect according to the size of on-the-spot test, and then the reduction match power.Regulating step is as follows: 1, balancing, and adjust balance with existing way and make oil pumping pump rod and balance weight balance, check whether oil pumping pump rod up stroke is approaching or consistent with the down stroke electric current; 2, regulate the stored energy size (how much) that energy stores use device, during adjusting, regulate gland in (for example: 0 to the 500mm) adjustment within the specific limits of the position of support bar, the distance of at this moment regulating gland and contact block obtains adjusting, be that energy stores use device when walking beam commutates, the decrement of device medi-spring obtains adjusting, and then regulates the storage power and the size that releases energy.Whether suitable, the energy in the time of whether can be with commutation makes full use of if adjusting, with when beam pumping unit oil pumping pump rod commutates, it is good that peak value does not appear in the electric current of motor.

The utility model is simple and reasonable for structure, and good energy-conserving effect is applicable to the beam pumping unit of other all balanced type.

Description of drawings

Fig. 1 is the structural representation of beam type energy-saving oil pumping machine described in the utility model;

Fig. 2 is oil pumping pump rod rising centre position schematic diagram;

Fig. 3 is oil pumping pump rod rising extreme position schematic diagram;

Fig. 4 is oil pumping pump rod decline centre position schematic diagram;

Fig. 5 is oil pumping pump rod falling-threshold position view;

Fig. 6 stores the fixedly schematic diagram of use device for energy;

Fig. 7 stores the structural representation of use device for energy;

Among the figure: the 1-central bracket; The 2-walking beam; The 3-pump rod of pumping; The 4-balance weight; The 5-crank; The 6-cable wire; The 7-horse head; The 8-connecting rod; The 9-through hole; The 10-holder; The 11-support bar; 12-regulates gland; The 13-spring; The 14-spring base; The 15-contact block.

The specific embodiment

Beam type energy-saving oil pumping machine, comprise central bracket 1, be arranged at the walking beam 2 on central bracket 1 top, oil pumping pump rod 3, with by motor, reducer drives the crank 5 that an end that rotates is fixed with balance weight 4, walking beam 2 one ends are fixed with the horse head 7 that connects oil pumping pump rod 3 by cable wire 6, the other end is connected with crank 5 by connecting rod 8, walking beam 2 bottom center support both sides are fixed with energy respectively and store use device, described energy stores use device and comprises the holder that has through hole 9 10 that tilts to be fixed on the central bracket 1, support bar 11, support bar 11 1 ends and walking beam 2 are hinged, the other end passes the through hole 9 on the holder 10, be fixed with on the support bar 11 and regulate gland 12, be with spring 13 between support bar 11 upper fixed seats 10 and the adjusting gland 12.In order to fix spring 13, not run-off the straight compression (deformation quantity is inconsistent everywhere) when guaranteeing spring 13 compressions, spring 13 two ends are fixed with spring base 14 and the contact block 15 that is placed on the support bar 11.

For proving absolutely that energy described in the utility model stores the course of work of use device, extremely shown in Figure 5 as Fig. 2, once oil pumping cyclic process with oil pumper is an example, analysing energy stores use device each duty in the oil pumping circulation: among Fig. 2, crank turn clockwise about 90 the degree, the oil pumping pump rod is in the rising centre position, and walking beam is in level, and energy stores use device and do not work; Among Fig. 3, crank turn clockwise about more than 180 the degree, horse head is lifted to top dead centre, the oil pumping pump rod is in the rising limit, at this moment, the energy of central bracket crank side stores the spring generation deformation in the use device, and deformation quantity maximum, the kinetic energy of the walking beam before soon walking beam will rise to and stops, horse head, crossbeam, connecting rod, oil pumping pump rod, fluid deadweight is converted into elastic potential energy and is stored in the spring, and when walking beam backhaul (promptly beginning to descend), the elastic potential energy of spring is converted into kinetic energy (being about to energy stored discharges fully), overcomes the inertia acting; Among Fig. 4, crank turns clockwise about more than 270 when spending, and the oil pumping pump rod is in the decline centre position, and walking beam is in level, and energy stores use device and do not work; Among Fig. 5, crank turn clockwise about 360 the degree, the oil pumping pump rod is in the falling-threshold position, horse head is reduced to lower dead center, the energy of central bracket horse head side stores use device the kinetic energy that walking beam drops to walking beam when stopping, horse head, crossbeam, connecting rod, sucker rod, fluid deadweight is stored in the spring, the elastic potential energy of retracting spring when walking beam begins to rise is converted into the rising kinetic energy of walking beam, horse head, crossbeam, connecting rod, oil pumping pump rod, fluid deadweight.

Claims

1. beam type energy-saving oil pumping machine, comprise central bracket (1), be arranged at the walking beam (2) on central bracket (1) top, oil pumping pump rod (3), with by motor, reducer drives the crank (5) that an end that rotates is fixed with balance weight (4), walking beam (2) one ends are fixed with the horse head (7) that connects oil pumping pump rod (3) by cable wire (6), the other end is connected with crank (5) by connecting rod (8), it is characterized in that walking beam (2) bottom center support (1) both sides are fixed with energy respectively and store use device, described energy stores use device and comprises the holder that has through hole (9) (10) that tilts to be fixed on the central bracket (1), support bar (11), support bar (11) one ends and walking beam (2) are hinged, the other end passes the through hole (9) on the holder (10), be fixed with on the support bar (11) and regulate gland (12), be with spring (13) between support bar (11) upper fixed seat (10) and the adjusting gland (12).

2. beam type energy-saving oil pumping machine according to claim 1 is characterized in that spring (13) two ends are fixed with spring base (14) and the contact block (15) that is placed on the support bar (11).