CN205036540U - Latent oily linear electric motor oil production device of two effects - Google Patents

Abstract

The utility model discloses a double-acting submersible linear motor oil production device, which comprises an oil pipe, a pump cylinder, a plunger, a linear motor and a one-way valve. The sealing sleeve is set on the driving connecting pipe, the upper end of the driving connecting pipe is connected and fixed to the bottom of the plunger, and the upper port of the ring cavity is fixed with a first one-way valve, the first one-way valve is located in the oil pipe cavity, and the bottom of the ring cavity The oil outlet hole on the wall of the pump barrel is connected with the lower cavity. The upper end of the pump barrel is fixed with a second one-way valve, and the upper end of the plunger is fixed with a third one-way valve. A fourth one-way valve is provided, the upper cavity communicates with the inner cavity of the oil pipe through the second one-way valve, and the inner cavity of the drive connecting pipe is respectively connected with the upper cavity and the lower cavity through the third one-way valve and the fourth one-way valve. cavities communicate. The utility model can draw oil and discharge oil during the up stroke and the down stroke, saving power consumption.

Description

Double-acting submersible linear motor oil extraction device

technical field

The utility model relates to an oil production equipment used in an oil field, in particular to a double-action submersible linear motor oil production device.

Background technique

In the mechanical oil recovery process, the oil well pump is a key equipment. Most of the ordinary oil well pumps generally enter and discharge oil once in one stroke, and the downstroke runs empty, resulting in energy waste and low pump efficiency. Moreover, the existing oil well pumps generally have rods for oil extraction, which easily cause eccentric wear of the rods and tubes, and the ground pumping units have a large footprint and high cost.

Contents of the invention

The purpose of the utility model is to provide a double-acting submersible linear motor oil extraction device with simple structure and convenient use, which can draw oil and discharge oil during the upstroke and downstroke, increase the pump efficiency and increase the output.

In order to achieve the above purpose, the technical solution adopted by the utility model is: the double-acting submersible linear motor oil extraction device includes an oil pipe, a pump barrel, a plunger, a linear motor and a one-way valve, and the plunger is arranged in the cavity of the pump barrel. The inner cavity of the pump cylinder is divided into an upper cavity and a lower cavity, and the linear motor is fixedly arranged at the bottom of the oil pipe through a fixed pipe, and an oil inlet hole is arranged on the wall of the fixed pipe, and the feature is that the pump cylinder is fixedly arranged at the bottom of the oil pipe At the bottom of the inner cavity, there is an annular cavity between the outer wall of the pump barrel and the inner wall of the oil pipe. The bottom of the oil pipe is fixed with a partition seal sleeve, which is arranged on the outer wall of the drive connection pipe. The shaft is fixedly connected, the lower end wall of the driving connecting pipe is provided with an oil inlet hole, the upper end of the driving connecting pipe is connected and fixed with the bottom of the plunger, and the upper port of the ring cavity is fixedly provided with a first one-way valve, the first one-way valve is located at In the oil pipe cavity, the bottom of the annular cavity communicates with the lower cavity through the oil outlet hole on the wall of the pump barrel. The upper end of the pump barrel is fixed with a second one-way valve, and the upper end of the plunger is fixed with a third one-way valve. The side wall of the driving connecting pipe is fixed with a fourth one-way valve, the upper cavity communicates with the inner cavity of the oil pipe through the second one-way valve, and the inner cavity of the driving connecting pipe passes through the third one-way valve and the fourth one-way valve respectively. The valve communicates with the upper cavity and the lower cavity.

The utility model has the beneficial effects that: the structure is simple, the use is convenient, and oil can be sucked and discharged during the up stroke and the down stroke; the linear motor is used to drive the plunger to move, the sucker rod is canceled, and the rodless oil production is realized. The phenomenon of eccentric wear is avoided; the pump efficiency is improved and the power consumption is saved.

Description of drawings

Fig. 1 is a schematic cross-sectional view of the structure of the utility model.

In the figure: 1. oil pipe; 2. first one-way valve; 3. second one-way valve; 4. upper cavity; 5. plunger; 6. ring chamber; 7. fourth one-way valve; 8. pump 9. Drive connecting pipe; 10. Linear motor; 11. Oil inlet hole; 12. Separate sealing sleeve; 13. Oil outlet hole; 14. Lower cavity; 15. The third one-way valve.

detailed description

Make the utility model with reference to Fig. 1. The double-acting submersible linear motor oil production device includes oil pipe 1, pump barrel 8, plunger 5, linear motor 10 and check valve, plunger 5 is arranged in pump barrel 8 cavity, and pump barrel 8 inner cavity is divided into The upper cavity 4 and the lower cavity 14, the linear motor 10 is fixedly arranged at the bottom of the oil pipe 1 through the fixed pipe, and the wall of the fixed pipe is provided with an oil inlet hole 11, which is characterized in that: the pump cylinder 8 is fixedly arranged in the oil pipe 1 At the bottom of the cavity, between the outer wall of the pump barrel 8 and the inner wall of the oil pipe 1 is an annular chamber 6. The bottom of the oil pipe 1 is fixed with a partition seal sleeve 12, and the partition seal sleeve 12 seal sleeve is arranged on the outer wall of the drive connection pipe 9, and the drive connection pipe 9 The lower end of the lower end is fixedly connected with the drive shaft of the linear motor 10, the lower end wall of the drive connection pipe 9 is provided with an oil inlet hole 11, the upper end of the drive connection pipe 9 is connected and fixed with the bottom of the plunger 5, and the upper port of the ring chamber 6 is fixed. There is a first one-way valve 2, the first one-way valve 2 is located in the cavity of the oil pipe 1, the bottom of the annular cavity 6 communicates with the lower cavity 14 through the oil outlet hole 13 on the wall of the pump cylinder 8, and the upper end of the pump cylinder 8 is fixed. There is a second one-way valve 3, a third one-way valve 15 is fixed on the upper end of the plunger 5, a fourth one-way valve 7 is fixed on the side wall of the drive connecting pipe 9, and the upper cavity 4 passes through the second one-way valve. The valve 3 communicates with the inner cavity of the oil pipe 1 , and the inner cavity of the driving connecting pipe 9 communicates with the upper cavity 4 and the lower cavity 14 through the third one-way valve 15 and the fourth one-way valve 7 respectively.

When using the utility model, start the linear motor 10, and during the upstroke, drive the connecting pipe 9 to move the plunger 5 upward, at this moment, the first check valve 2 and the third check valve 15 are closed, and the second check valve 3 and the third check valve 15 are closed. The fourth one-way valve 7 is opened, the oil in the upper cavity 4 enters the cavity of the oil pipe 1, the oil in the oil well enters the cavity of the driving connecting pipe 9 from the oil inlet hole 11, and flows into the lower cavity 14 and the annular cavity 6. Complete one oil pumping and oil discharge; during the downstroke, the first check valve 2 and the third check valve 15 are opened, the second check valve 3 and the fourth check valve 7 are closed, and the lower cavity 14 and the annular cavity 6 The oil inside enters the oil pipe 1 cavity from the first one-way valve 2, and the oil in the oil well enters the drive connection pipe 9 cavity from the oil inlet hole 11, and then enters the upper cavity 4; thus, the reciprocating cycle achieves oil recovery. The purpose of the field test shows that after the utility model is used to replace the current oil well pump, the output is increased by about 30% while maintaining the same power consumption.

Claims (1)

1. Double-acting submersible linear motor oil recovery device, including oil pipe (1), pump barrel (8), plunger (5), linear motor (10) and check valve, plunger (5) is set in the pump barrel (8 ) cavity, and the inner cavity of the pump cylinder (8) is divided into an upper cavity (4) and a lower cavity (14). The linear motor (10) is fixed on the bottom of the tubing (1) through the There is an oil inlet hole (11) on the wall, and the feature is that the pump barrel (8) is fixedly arranged at the bottom of the inner cavity of the oil pipe (1), and the outer wall of the pump barrel (8) and the inner wall of the oil pipe (1) are ring chambers (6), the bottom of the oil pipe (1) is fixed with a separation seal sleeve (12), the separation seal sleeve (12) seal sleeve is arranged on the outer wall of the drive connection pipe (9), and the lower end of the drive connection pipe (9) is connected to the linear motor The driving shaft of (10) is fixedly connected, the lower end wall of the driving connecting pipe (9) is provided with an oil inlet hole (11), the upper end of the driving connecting pipe (9) is connected and fixed with the bottom of the plunger (5), and the ring cavity (6 ) is fixed with a first one-way valve (2), the first one-way valve (2) is located in the cavity of the oil pipe (1), and the bottom of the ring cavity (6) passes through the oil outlet on the wall of the pump cylinder (8) The hole (13) communicates with the lower cavity (14), the upper end of the pump cylinder (8) is fixed with a second one-way valve (3), and the upper end of the plunger (5) is fixed with a third one-way valve (15 ), the fourth one-way valve (7) is fixed on the side wall of the drive connecting pipe (9), and the upper cavity (4) communicates with the inner cavity of the oil pipe (1) through the second one-way valve (3). The inner cavity of the connecting pipe (9) communicates with the upper cavity (4) and the lower cavity (14) through the third one-way valve (15) and the fourth one-way valve (7) respectively.