CN2176428Y

CN2176428Y - Device of oil extractor for buffer and increasing output

Info

Publication number: CN2176428Y
Application number: CN 94207735
Authority: CN
Inventors: 肖调坤
Original assignee: Oumeike Engineering (changsha) Co Ltd
Current assignee: Oumeike Engineering (changsha) Co Ltd
Priority date: 1994-04-11
Filing date: 1994-04-11
Publication date: 1994-09-07
Anticipated expiration: 2004-04-11

Abstract

The utility model discloses an output increasing and buffering device used for an oil pumping machine for exploiting oil. The output increasing and buffering device used for an oil pumping machine for exploiting oil is suitable for the mechanical oil exploitation of an oil industry. A spring is arranged on a polished rod between the square clamp of the oil pumping machine for exploiting oil and a rope hanging device. The upper stroke and the lower stroke of the plunger of an oil pumping pump are increased by the spring in the process that the spring is compressed and recovered, and thereby, the oil output of the oil pumping machine is increased; meanwhile, the force bearing working conditions of a motor in the oil pumping machine, an oil pumping rod post, and the oil pumping pump are improved by the buffering characteristic of the spring, the breaking and the drop of the oil pumping rod post are reduced, and the service life of the oil pumping rod post is prolonged. In addition, the output increasing and buffering device used for an oil pumping machine for exploiting oil can also reduce electric power energy consumption, and the output increasing and buffering device used for an oil pumping machine for exploiting oil has simple structure and low price. The output increasing and buffering device used for an oil pumping machine for exploiting oil solves the insufficiency existing in the existing oil pumping machine without a buffering device for exploiting oil.

Description

Device of oil extractor for buffer and increasing output

The utility model discloses a kind of volume increase buffer, be applicable to the petroleum industry machinery oil production oil pumper.

At present, on the domestic petroleum industrial machinery oil recovery oil pumper without any buffer, outstanding rope upper end on the oil recovery oil pumper is fixed on the horse head, the lower end connects polished rod eye, polished rod passes polished rod eye, its upper end is fixed on the polished rod eye by square clamp, following termination sucker rod, there are the following problems for present this structure: the static load elastic deformation of (1) rod string and oil pipe, the actual stroke that causes oil pump plunger piston is always less than its theoretical stroke, the actual efficiency of oil well pump is lower, can only reach 70～80% of its theoretical efficiency generally speaking; (2) horse head begins to act on the instantaneous inertial load of rod string and the transfer of liquid bar load and cause that easily the disconnected of rod string takes off when up, and simultaneously, temporary impact load causes motor current value to strengthen, and energy consumption increases.

The purpose of this utility model provides the volume increase buffer on a kind of oil pumper that is used to recover the oil, it can increase the oil production of oil pumper, reduce the consumption of electric power energy, improve the force status of motor in the oil pumper, rod string and oil well pump, reducing the disconnected of rod string takes off, prolong their application life, and simple in structure, cheap.

The purpose of this utility model is achieved in that the volume increase buffer on a kind of oil pumper that is used to recover the oil, outstanding rope upper end on the oil recovery oil pumper is fixed on the horse head, the lower end connects polished rod eye, polished rod passes polished rod eye, its upper end is fixed by square clamp, following termination sucker rod is equipped with spring on the polished rod between square clamp and the polished rod eye.

The utility model has the advantages that: because spring has the characteristic of buffering, when it is installed between oil pumper polished rod eye and the square clamp, in compression and recovery process, all increased the upper and lower stroke of oil pump plunger piston, promptly increased the output of oil pumper.According to the actual test of on-the-spot commerical test, after oil pumper is installed volume increase buffer described in the utility model, can increase output more than 10%, for petroleum industry, this is very considerable rate of growth; And this volume increase buffer is cheap, and for the barreler of daily output more than 20 tons, the interests that volume increase in a day brings just are recoverable to the input expense of this volume increase buffer; Simultaneously, can absorb horse head again and begin the inertial load of rod string when up and the shock loading in the oil pumper running, reduce electric power energy consumption, improve motor, the force status of rod string and box cupling connecting thread, the minimizing rod string is disconnected to take off rate, prolongs their application life;

Fig. 1 is the utility model mounting structure schematic diagram;

Fig. 2 is the structural representation that the utility model adopts rubber spring;

Fig. 3 is the structural representation that the utility model adopts metal spring;

Fig. 4 is the operating principle schematic diagram after oil pumper is installed the utility model;

Below in conjunction with accompanying drawing the utility model is done further to discuss in detail:

Embodiment 1:

Volume increase buffer on a kind of oil pumper that is used to recover the oil, outstanding rope 2 on the oil recovery oil pumper, the upper end is fixed on the horse head 11, the lower end connects polished rod eye 8, polished rod 4 passes polished rod eye 8, its upper end is fixed by square clamp 3, following termination sucker rod 13, on the polished rod 4 between square clamp 3 and the polished rod eye 8 the volume increase buffer is housed, the volume increase buffer is by spring 6, urceolus 5 and inner core 7 are formed, and spring 6 is contained between urceolus 5 and the inner core 7, have hole 1 on urceolus 5 and the inner core 7, polished rod 4 passes hole 1, and the tube Gao Jun of urceolus 5 and inner core 7 is less than the height of spring 6 after being compressed under the ultimate load effect, and inner core 7 is inserted in the urceolus 5.

Wherein, spring 6 is rubber springs, is formed by stacking by one or more pieces flexible members, and flexible member is to be formed by rubber bodies 9 and metallic framework 10 bondings; According to the type and spec of oil recovery oil pumper, adjust elastomeric physical performance index and physical dimension thereof, can obtain the rubber spring of different-stiffness.

Spring 6 described in the utility model is polyurethane spring, metal spring, air spring, silicone oil spring, hydro-pneumatic spring etc. also, the rigidity of these springs all should be complementary with its service load, and promptly the oil pumper of different model and specification is selected the spring of different-stiffness for use.

But volume increase buffer described in the utility model is also only singly adorned a spring 6 or is singly added an inner core 7 or a urceolus 5 that plays the fixing spring effect again on the polished rod 4 between square clamp 3 and the polished rod eye 8

The course of work of the present utility model is as follows:

As shown in Figure 4, when pumping unit horsehead 11 went downwards to bottom dead centre, the oil pumper roofbolt had peak acceleration upwards and downward maximum inertia force; Simultaneously, horse head 11 beginnings are up, and travelling valve 15 is closed, and fluid column load is transferred on the plunger 14 by oil pipe 12, increases the load of rod string; By the transmission of power, downward maximum inertia force and fluid column load transfer have destroyed the original balance of spring 6, increase load promptly for spring 6, and spring 6 is compressed, thereby increase the downward stroke of plunger 14;

When pumping unit horsehead 11 was up to top dead-centre, the oil pumper roofbolt had downward peak acceleration and the maximum inertia force that makes progress; Simultaneously, horse head 11 beginnings are descending, and standing valve 16 is closed, fluid column load is transferred on the oil pipe 12 by plunger 14, maximum inertia force upwards and fluid column load transfer show as to spring 6 unloadings, spring 6 reinstatement attitudes (i.e. elongation), that is increase the stroke that plunger 14 makes progress;

The increase of plunger 14 upper and lower strokes, its result has increased the oil pumping pump delivery, thereby increases the output of oil pumper.

Crude oil is by oil-in 17 inspirations, by oil-out 18 dispatch.

Claims

1, the volume increase buffer on a kind of oil pumper that is used to recover the oil, outstanding rope (2) on the oil recovery oil pumper, the upper end is fixed on the horse head (11), the lower end connects polished rod eye (8), polished rod (4) passes polished rod eye (8), its upper end is fixing by square clamp (3), and following termination sucker rod (13) is characterized in that: on the polished rod (4) between square clamp (3) and the polished rod eye (8) spring (6) is housed.

2, the volume increase buffer on the oil pumper that is used to recover the oil as claimed in claim 1, it is characterized in that: spring (6) is contained between urceolus (5) and the inner core (7), have hole (1) on urceolus (5) and the inner core (7), polished rod (4) passes hole (1), and the tube Gao Jun of urceolus (5) and inner core (7) is less than the height of spring (6) after being compressed under the ultimate load effect.

3, the volume increase buffer on the oil pumper that is used to recover the oil as claimed in claim 1 or 2, it is characterized in that: spring (6) is made up of elastic body (9), metallic framework (10), and elastic body (9) is bonded on the metallic framework (10).

4, the volume increase buffer on the oil pumper that is used to recover the oil as claimed in claim 3, it is characterized in that: spring (6) can be rubber spring or polyurethane spring.

5, the volume increase buffer on the oil pumper that is used to recover the oil as claimed in claim 1 or 2, it is characterized in that: spring (6) can be metal spring or air spring or silicone oil spring or hydro-pneumatic spring.