CN204571947U - A kind of all-hydraulic potential energy recovering economizing oil pumper - Google Patents

Abstract

A kind of all-hydraulic potential energy recovering economizing oil pumper, belongs to oil exploration equipment technical field.The utility model comprises body unit and potential energy recovering hydraulic system unit, body unit is made up of frame, reel, outstanding rope, pulley and sucker rod, potential energy recovering hydraulic system unit is made up of Hydraulic Station, hydraulic motor and auxiliary oil pump, eliminate in the past complicated transmission and reducing gear, simple and compact for structure, can floor space be effectively reduced, reduce manufacturing cost simultaneously.The utility model potential energy that sucker rod can be declined is that hydraulic energy is stored in accumulator, the intermittent power of main oil pump is also stored in accumulator simultaneously, and the hydraulic energy after reclaiming is used for use of next time pumping, while raising oil pumper operational efficiency, compared with traditional beam pumping unit, also can reduce the installed power of 40%, thus reduce the overall energy consumption of oil pumper, achieve the object of energy conservation.

Description

A fully hydraulic potential energy recovery energy-saving pumping unit

technical field

The utility model belongs to the technical field of petroleum exploitation equipment, in particular to a fully hydraulic potential energy recovery and energy-saving pumping unit.

Background technique

As one of the important oil extraction equipment, the pumping unit is also the most important lifting equipment in the rod pumping system. At present, there are a large number of mechanical pumping units in my country, mainly beam pumping units, with nearly 300,000 sets of equipment. The total installed capacity of electric motors in them has reached about 3,500 megawatts, and the annual power consumption has exceeded 10 billion. kWh.

At the present stage, the average operating efficiency of pumping units in my country is only 25.96%, while the average operating efficiency of foreign pumping units can reach 30.05%. Therefore, if the average operating efficiency of my pumping units can be raised to the average level of foreign countries, Will be able to save about billions of kilowatt-hours of electricity. In addition, the traditional beam pumping units in my country still have many problems such as large floor area, complex and heavy structure, many transmission links, large installed capacity of the system and low efficiency. The technological requirements of miniaturization, simple structure, energy saving and high efficiency are put forward. Obviously, the traditional beam pumping unit cannot meet this technological requirement.

Therefore, it is urgent to design a pumping unit with small footprint, simple and compact structure, low manufacturing cost and low energy consumption, so as to replace the traditional beam pumping unit and achieve the purpose of saving energy.

Utility model content

Aiming at the problems existing in the prior art, the utility model provides a fully hydraulic potential energy recovery energy-saving pumping unit, which not only has the advantages of small footprint, simple and compact structure, low manufacturing cost and low energy consumption, but also can pump oil Potential energy of rod descending is converted into hydraulic energy for recovery, and the recovered hydraulic energy is reused to achieve the purpose of saving energy.

In order to achieve the above object, the utility model adopts the following technical scheme: a fully hydraulic potential energy recovery energy-saving pumping unit, including a body unit and a potential energy recovery hydraulic system unit, and the body unit includes a frame, a reel, a suspension rope, a pulley and the sucker rod, the pulley is installed on the top of the frame, one end of the suspension rope is connected to the sucker rod, and the other end of the suspension rope is connected to the reel by going around the pulley; The lower limit travel position is equipped with a travel control switch;

The potential energy recovery hydraulic system unit includes a hydraulic station, a hydraulic motor and an auxiliary oil pump. The hydraulic motor is connected to one end of the reel through a coupling, and the other end of the reel is connected to the auxiliary oil pump through an electromagnetic clutch brake; the hydraulic station includes a main Oil pump, three-position four-way electromagnetic reversing valve, accumulator and oil tank, the oil inlet of the main oil pump is connected with the oil tank, and the oil outlet of the main oil pump is connected with the oil inlet of the three-position four-way electromagnetic reversing valve , the oil inlet of the accumulator is connected, the oil outlet of the three-position four-way electromagnetic reversing valve is connected with the hydraulic motor; the oil inlet of the auxiliary oil pump is connected with the fuel tank, and the oil outlet of the auxiliary oil pump One path is connected with the oil inlet of the accumulator, and the other path is connected with the fuel tank.

The oil outlet of the main oil pump is connected with a first one-way valve, the oil inlet of the first one-way valve is connected with the oil outlet of the main oil pump, and the oil outlet of the first one-way valve is connected with the three-position four The oil inlet of the electromagnetic reversing valve and the oil inlet of the accumulator are connected.

The oil outlet of the auxiliary oil pump is connected with a second one-way valve, the oil inlet of the second one-way valve is connected with the oil outlet of the auxiliary oil pump, and the oil outlet of the second one-way valve is connected with the accumulator all the way. The oil inlet is connected, and the other is connected with the fuel tank.

A pressure relay and a first relief valve are sequentially connected on the oil path between the oil outlet of the second check valve and the oil tank.

An overflow oil return pipeline is also arranged at the oil outlet of the main oil pump and the oil tank, and a second overflow valve is arranged on the overflow oil return pipeline.

An oil return filter is arranged between the oil return port of the three-position four-way electromagnetic reversing valve and the oil tank.

Pressure gauges are provided at the oil outlets of the main oil pump and the auxiliary oil pump.

The beneficial effects of the utility model:

Compared with the prior art, the utility model has a simple and compact structure, saves the complicated transmission and deceleration mechanism in the past, can effectively reduce the occupied area, and reduces the manufacturing cost at the same time. The utility model designs a potential energy recovery hydraulic system unit, which can convert the potential energy of the sucker rod down into hydraulic energy for recovery, and reuse the recovered hydraulic energy to improve the operating efficiency of the pumping unit. Compared with the pumping unit, the installed power can be reduced by 40%, thereby reducing the overall energy consumption of the pumping unit and realizing the purpose of saving energy.

Description of drawings

Fig. 1 is the structural schematic diagram of the full hydraulic potential energy recovery energy-saving pumping unit of the present utility model;

Fig. 2 is the side view of Fig. 1;

Fig. 3 is the schematic diagram of the potential energy recovery hydraulic system unit of the utility model;

In the figure, 1—frame, 2—drum, 3—suspension rope, 4—pulley, 5—sucker rod, 6—hydraulic station, 7—hydraulic motor, 8—auxiliary oil pump, 9—electromagnetic clutch brake, 10 —Main oil pump, 11—Three-position four-way electromagnetic reversing valve, 12—Accumulator, 13—Oil tank, 14—Stroke control switch, 15—First check valve, 16—Second check valve, 17—Pressure Relay, 18—first relief valve, 19—second relief valve, 20—oil return filter, 21—air filter, 22—oil well outlet, 23—coupling, 24—pressure gauge, 25—oil Oil temperature gauge.

Detailed ways

Below in conjunction with accompanying drawing and specific embodiment the utility model is described in further detail.

As shown in Figures 1, 2, and 3, a fully hydraulic potential energy recovery energy-saving pumping unit includes a body unit and a potential energy recovery hydraulic system unit. The body unit includes a frame 1, a reel 2, a suspension rope 3, and a pulley 4 and the sucker rod 5, the pulley 4 is installed on the top of the frame 1, one end of the suspension rope 3 is connected with the sucker rod 5, and the other end of the suspension rope 3 is connected with the reel 2 around the pulley 4; The upper limit travel position and the lower limit travel position of the sucker rod 5 are all equipped with a stroke control switch 14;

The potential energy recovery hydraulic system unit includes a hydraulic station 6, a hydraulic motor 7 and an auxiliary oil pump 8. The hydraulic motor 7 is connected to one end of the reel 2 through a coupling 23, and the other end of the reel 2 is connected to the auxiliary oil pump through an electromagnetic clutch brake 9. 8 are connected; the hydraulic station 6 includes a main oil pump 10, a three-position four-way electromagnetic reversing valve 11, an accumulator 12 and an oil tank 13, the oil inlet of the main oil pump 10 is connected with the oil tank 13, and the main oil pump 10 The oil outlet is connected with the oil inlet of the three-position four-way electromagnetic reversing valve 11 and the oil inlet of the accumulator 12 at the same time, and the oil outlet of the three-position four-way electromagnetic reversing valve 11 is connected with the hydraulic motor 7 The oil inlet of the auxiliary oil pump 8 communicates with the oil tank 13, the oil outlet of the auxiliary oil pump 8 communicates with the oil inlet of the accumulator 12 one way, and the other way communicates with the oil tank 13.

The oil outlet of the main oil pump 10 is connected with a first check valve 15, the oil inlet of the first check valve 15 communicates with the oil outlet of the main oil pump 10, and the oil outlet of the first check valve 15 At the same time, it communicates with the oil inlet of the three-position four-way electromagnetic reversing valve 11 and the oil inlet of the accumulator 12 .

The oil outlet of the auxiliary oil pump 8 is connected with a second one-way valve 16, the oil inlet of the second one-way valve 16 is connected with the oil outlet of the auxiliary oil pump 8, and the oil outlet of the second one-way valve 16 is one way It communicates with the oil inlet of the accumulator 12, and the other communicates with the oil tank 13.

A pressure switch 17 and a first relief valve 18 are sequentially connected on the oil path between the oil outlet of the second one-way valve 16 and the oil tank 13 .

The oil outlet of the main oil pump 10 and the oil tank 13 are also provided with an overflow oil return pipeline, and a second overflow valve 19 is arranged on the overflow oil return pipeline.

An oil return filter 20 is arranged between the oil return port of the three-position four-way electromagnetic reversing valve 11 and the oil tank 13 .

Pressure gauges 24 are provided at the oil outlets of the main oil pump 10 and the auxiliary oil pump 8 .

Below in conjunction with accompanying drawing, the one-time use process of the present utility model is illustrated:

Carry out the oil pumping action, start the main oil pump 10, and under the joint action of the main oil pump 10 and the accumulator 12, the hydraulic motor 7 is driven to rotate, and the rotation of the hydraulic motor 7 drives the reel 2 to rotate, and then the reel 2 rotates to realize The suspension rope 3 is retracted, and then the sucker rod 5 is pulled up by the suspension rope 3. When the sucker rod 5 moves to the upper limit travel position and triggers the stroke control switch 14, the three-position four-way electromagnetic reversing valve 11 performs reversing. At the same time, the electromagnetic clutch brake 9 is closed, so that the drum 2 is combined with the auxiliary oil pump 8, and the oil pumping process is completed at this time; at the next moment, the main oil pump 10 starts to fill the accumulator 12, and the accumulator 12 The intermittent power of the main oil pump 10 is stored, and the sucker rod 5 starts to descend under the action of gravity at the same time, and the suspension rope 3 is released through the lowering action of the sucker rod 5, and the reel 2 is driven to rotate in the opposite direction during the rope release process of the suspension rope 3 , during the reverse rotation process of the reel 2, it will drive the auxiliary oil pump 8 to work and fill the accumulator 12 with fluid. The accumulator 12 provides energy for the next oil pumping action; when the pressure in the accumulator 12 reaches the set pressure of the pressure relay 17, the electromagnetic clutch brake 9 is disconnected, thereby separating the reel 2 from the auxiliary oil pump 8, and at the same time The electromagnetic clutch brake 9 brakes the reel 2. When the sucker rod 5 drops to the lower limit stroke position and triggers the stroke control switch 14, the three-position four-way electromagnetic reversing valve 11 performs the reversing action again, and a stroke is completed at this time. , and then the next oil pumping action can be performed, and so on.

The schemes in the embodiments are not intended to limit the patent protection scope of the present utility model, and all equivalent implementations or changes that do not deviate from the utility model are included in the patent scope of the present case.

Claims (7)

1. an all-hydraulic potential energy recovering economizing oil pumper, it is characterized in that: comprise body unit and potential energy recovering hydraulic system unit, described body unit comprises frame, reel, outstanding rope, pulley and sucker rod, described pulley is arranged on frame top, one end of outstanding rope is connected with sucker rod, and the other end of outstanding rope is walked around pulley and is connected with reel; All travel control switch is installed in the upper limit stroke position of described sucker rod and lower bound range position;

Described potential energy recovering hydraulic system unit comprises Hydraulic Station, hydraulic motor and auxiliary oil pump, and described hydraulic motor is connected with reel one end by shaft coupling, and the reel other end is connected with auxiliary oil pump by electric clutch-brake; Described Hydraulic Station comprises main oil pump, three-position four-way electromagnetic directional valve, accumulator and fuel tank, the oil-in of described main oil pump is connected with fuel tank, the oil-out of main oil pump is connected with the oil-in of three-position four-way electromagnetic directional valve, the oil-in of accumulator simultaneously, and the oil-out of described three-position four-way electromagnetic directional valve is connected with hydraulic motor; The oil-in of described auxiliary oil pump is connected with fuel tank, and oil-out one tunnel of auxiliary oil pump is connected with the oil-in of accumulator, and another road is connected with fuel tank.

2. one according to claim 1 all-hydraulic potential energy recovering economizing oil pumper, it is characterized in that: be connected with the first one way valve at the oil-out of described main oil pump, the oil-in of the first one way valve is connected with the oil-out of main oil pump, and the oil-out of the first one way valve is connected with the oil-in of three-position four-way electromagnetic directional valve, the oil-in of accumulator simultaneously.

3. one according to claim 1 all-hydraulic potential energy recovering economizing oil pumper, it is characterized in that: be connected with the second one way valve at the oil-out of described auxiliary oil pump, the oil-in of the second one way valve is connected with auxiliary oil pump oil-out, oil-out one tunnel of the second one way valve is connected with the oil-in of accumulator, and another road is connected with fuel tank.

4. one according to claim 3 all-hydraulic potential energy recovering economizing oil pumper, is characterized in that: on the oil circuit between the oil-out and fuel tank of described second one way valve, be connected with pressure switch and the first overflow valve in turn.

5. one according to claim 1 all-hydraulic potential energy recovering economizing oil pumper, is characterized in that: be also provided with at the oil-out of described main oil pump and fuel tank and overflow back oil pipe line, is provided with the second overflow valve overflowing back on oil pipe line.

6. one according to claim 1 all-hydraulic potential energy recovering economizing oil pumper, is characterized in that: between the oil return opening and fuel tank of described three-position four-way electromagnetic directional valve, be provided with return filter.

7. one according to claim 1 all-hydraulic potential energy recovering economizing oil pumper, is characterized in that: be equipped with pressure meter at the oil-out of described main oil pump and auxiliary oil pump.