CN204371579U - A kind of Pressurized Note Water Pump of Hydraulic Pressure - Google Patents

Abstract

The utility model discloses a hydraulic pressurized water injection pump, which comprises a support plate, on which a hydraulic station, a control cabinet and at least one group of hydraulic cylinders, a motor with an oil pump and a water injection cylinder are arranged, the hydraulic station communicates with the motor with an oil pump, and the motor The oil pump is connected to the hydraulic cylinder, and both ends of the hydraulic cylinder are connected to a water injection cylinder connected to its cavity. The hydraulic cylinder is provided with a piston rod that extends into the water injection cylinder on both sides of the hydraulic cylinder. There are pistons in the middle position, and the water injection pipe with low-pressure water inlet is divided into two lines, one is directly connected to the water inlet of the water injection cylinder at the water inlet through a valve, and the other is connected to the water inlet of the water injection cylinder at the water outlet through a pipe and a valve , the water outlet pipe with the high-pressure water outlet is divided into two routes, one is directly connected with the water outlet of the water injection tank at the water outlet, and the other is connected with the water outlet of the water injection tank at the water inlet. Due to the use of hydraulic pressure, the hydraulic thrust is large, so it saves energy. Because of the simple structure, it has low cost, low maintenance cost and low noise.

Description

A hydraulic booster water injection pump

technical field

The utility model relates to a device for underground water injection in an oil field, in particular to a hydraulic booster water injection pump.

Background technique

The water injection pump of the existing water boosting equipment includes a multistage centrifugal pump, a motor, an A water feeding pump, a pool, an upper water pipe, a B water feeding pump and a return pipe. There are two feed water pumps, A feed water pump and B feed water pump, one is spare. During work, the B feeding water pump is standby, and the A feeding water pump draws water from the pool 4, and enters the multistage centrifugal pump through the upper water pipe, and the multistage centrifugal pump injects water into the ground under the drive of the motor. The water return pipe is connected between the upper water pipe and the pool.

The multi-stage centrifugal pump pressurizes and transports water through one stage and one stage, so the energy loss is large and the overall efficiency is low. As the corrosion and wear of the blades intensify, the overall efficiency will continue to decline; the multi-stage centrifugal pump The blades are always eroded with water under high pressure, which is prone to corrosion, wear, and short life. The internal structure is complex, the installation accuracy is high, and the internal blades, bearings and other parts are prone to failure. Once they fail, they must be replaced, resulting in maintenance. and maintenance workload, high cost.

At the same time, most of the existing water injection pumps use motors, gearboxes and plungers to pressurize, and the electric wheel must be replaced every time the pressure is raised, so the energy consumption is large, the maintenance cost is high, and the service life of parts is short. And because the piston adopts a steel cylinder type piston, the diameter is small, so the stroke is small. When a certain stroke needs to be achieved, more steel cylinders are needed, so the number of steel cylinders is relatively large, and the overall noise generated is relatively large.

Utility model content

In order to solve the above technical problems, the utility model provides a hydraulic pressurized water injection pump with low maintenance cost, low noise and long service life of components. Due to the use of hydraulic pressure, the hydraulic thrust is large, so energy is saved.

The utility model is realized through the following technical solutions:

A hydraulic pressurized water injection pump, comprising a support plate, on which a hydraulic station, a control cabinet and at least one group of hydraulic cylinders, a motor with an oil pump and a water injection cylinder are arranged, the hydraulic station is connected with the motor with an oil pump, and the motor with an oil pump It communicates with the hydraulic cylinder, and both ends of the hydraulic cylinder are connected with a water injection cylinder communicating with its cavity. The hydraulic cylinder is provided with a piston rod that extends into the water injection cylinder on both sides of the hydraulic cylinder. The piston rod Pistons are installed at both ends and in the middle, and the water injection pipe with low-pressure water inlet is divided into two lines, one of which is directly connected to the water inlet of the water injection tank at the water inlet through the valve, and the other is connected with the water injection tank at the water outlet through the pipe and valve. The water inlet is connected, and the water outlet pipe with the high-pressure water outlet is divided into two routes, one of which is directly connected with the water outlet of the water injection tank at the water outlet, and the other with the water outlet of the water injection tank at the water inlet.

Two sets of hydraulic cylinders, motor belt oil pumps and water injection cylinders are arranged on the support plate, wherein one set of water injection cylinders (5) includes two water injection cylinders.

The hydraulic cylinder is fixedly connected with the water injection cylinders at both ends through the guide block, and the inner side of the guide block clamps the piston rod.

Lubricating devices for providing lubrication to the water injection cylinder are provided on the guide blocks.

The lubricating device is an oil pipe.

Pistons with corrosion-resistant isolation plates are arranged at both ends of the piston rod.

Compared with the prior art, the utility model has the following beneficial technical effects:

The hydraulic pressurized water injection pump provided by the utility model replaces the engine drive in the prior art by setting a hydraulic cylinder, and at the same time improves the piston of the hydraulic cylinder, thus simplifying the overall structure and avoiding the existing The noise generated when multiple steel cylinder pistons work as a whole in the technology.

Because the utility model adopts hydraulic pressure, unnecessary links are reduced, and the hydraulic thrust is large, so energy is saved. And because the structure of the water injection pump is simple, the cost is reduced, and at the same time, due to the simple structure, energy loss in multiple links is avoided and energy is saved.

Description of drawings

Fig. 1 is the top view of the hydraulic booster water injection pump provided by the utility model;

Fig. 2 is the perspective view of the hydraulic booster water injection pump provided by the utility model;

Fig. 3 is the right side view of the hydraulic booster water injection pump provided by the utility model;

Fig. 4 is the front view of the hydraulic booster water injection pump provided by the utility model;

Fig. 5 is a cross-sectional view of the hydraulic booster water injection pump provided by the utility model.

Among them: 1 is hydraulic station; 2 is hydraulic cylinder; 3 is motor with oil pump; 4 is control cabinet; 5 is water injection cylinder; 6 is low pressure water inlet; 7 is high pressure water outlet; 8 is piston rod; 9 is piston; 10 11 is a lubricating device; 12 is a support plate; 13 is a separation plate.

Detailed ways

Below in conjunction with accompanying drawing, the utility model is described in further detail:

Referring to Figures 1 to 5, a hydraulic booster water injection pump includes a support plate 12 on which a hydraulic station 1, a control cabinet 4, two groups of hydraulic cylinders 2, a motor with an oil pump 3, and a water injection cylinder are arranged. 5. Among them, a group of water injection cylinders 5 are two water injection cylinders. The hydraulic station 1 communicates with the motor belt oil pump 3, and the motor belt oil pump 3 communicates with the hydraulic cylinder 2. Both ends of the hydraulic cylinder 2 are fixedly connected with the chamber through the guide block 10 body connected water injection cylinder 5, the inner side of the guide block 10 clamps the piston rod 8, the hydraulic cylinder 2 is provided with a piston rod 8 that both ends extend into the water injection cylinder 5 on both sides, and the piston rod Pistons 9 are provided at both ends and the middle of the piston rod 8, wherein the pistons 9 provided at both ends of the piston rod 8 have corrosion-resistant isolation plates 13, and the water injection pipe with the low-pressure water inlet 6 is divided into two routes, one of which directly passes through the valve and The water inlets of each water injection cylinder 5 at the water inlet are connected, and one road is connected with the water inlets of each water injection cylinder 5 at the water outlet through pipelines and valves. The water outlets of the water injection cylinders 5 are connected, and one way is connected with the water outlets of the water injection cylinders 5 at the water inlet end. The guide blocks 10 are all provided with oil pipes 11 for providing lubrication to the water injection cylinders 5 . Wherein, the valve is an electro-hydraulic reversing valve.

Working principle of the utility model:

When starting to work: the motor with the oil pump drives its oil pump, the oil pump absorbs oil from the hydraulic station, the oil is injected into the hydraulic cylinder through the oil pump in the form of high pressure, the hydraulic cylinder moves to the left, and the water injection cylinder at the water inlet is from the low pressure water inlet 6 The low-pressure water is directly sucked into the water injection pipe of the pump, and the water injection cylinder at the water outlet is discharged from the high-pressure water outlet at the same time. When the hydraulic cylinder moves to the right, the water injection cylinder at the water outlet end absorbs water from the water injection pipe of the low-pressure water inlet 6, and the water flows into it through the water injection pipe above it, and at the same time, the water in the water outlet of the water injection cylinder at the water inlet end passes through the pipe connected to the water outlet pipe , flowing out from the high-pressure water outlet 7.

The working mode of this equipment is 24-hour regular work, the maximum pressure of the equipment is 31.5MPa, the rated working pressure is 25MPa, and the motor power is 90KW-4 to meet the power demand of the equipment; the cooling of the equipment adopts a large flow air cooling device as the oil of the hydraulic station The temperature control provides guarantee to keep the oil temperature within 60 degrees to meet the needs of use; the hydraulic oil filter adopts two filters, oil suction filter and high pressure filter, to ensure the normal use of the hydraulic valve and the cleanliness of the oil.

Each water injection pump is equipped with four water injection cylinders, two of which are in a group. The two groups of water injection cylinders work alternately and reciprocatingly and synchronously. They are respectively controlled by two electro-hydraulic reversing valves. The oil cylinders push the water cylinders to move to achieve water absorption and water discharge. The reciprocating time of the hydraulic cylinder is adjustable from 46s to 60s; the motor starts with a soft start to avoid excessive starting current; the hydraulic valve electromagnet on the hydraulic station uses 24V; the reciprocating control of the hydraulic cylinder is controlled by a photoelectric switch.

Because the utility model adopts hydraulic pressure, unnecessary links are reduced, and the hydraulic thrust is large, so energy is saved. And because the structure of the water injection pump is simple, the cost is reduced.

The basic principles and main features of the present utility model and the advantages of the present utility model have been shown and described above. Those skilled in the art should understand that the utility model is not limited by the above-mentioned embodiments. The above-mentioned embodiments and descriptions only illustrate the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model The new model also has various changes and improvements, and these changes and improvements all fall within the scope of the claimed utility model. The scope of protection required by the utility model is defined by the appended claims and their equivalents.

Claims (6)

1. A hydraulic booster water injection pump is characterized in that it comprises a support plate (12), and the described support plate (12) is provided with a hydraulic station (1), a control cabinet (4) and at least one group of hydraulic cylinders ( 2), motor belt oil pump (3) and water injection cylinder (5), hydraulic station (1) is connected with motor belt oil pump (3), motor belt oil pump (3) is connected with hydraulic cylinder (2), hydraulic cylinder (2) two Both ends are connected with a water injection cylinder (5) communicated with its cavity, and the hydraulic cylinder (2) is provided with a piston rod (8) whose both ends extend into the water injection cylinder (5) on both sides, so Pistons (9) are provided at both ends and in the middle of the piston rod (8) described above, and the water injection pipe with the low-pressure water inlet (6) is divided into two paths, one of which directly passes through the valve and the water injection cylinder (5) at the water inlet end. The water inlet is connected, and one way is connected with the water inlet of the water injection cylinder (5) at the water outlet through a pipeline and a valve. The water outlet links to each other, and all the way links to each other with the water outlet of the water injection tank (5) at the water inlet end. 2. The hydraulic pressurized water injection pump according to claim 1, characterized in that two groups of hydraulic cylinders (2), motor belt oil pump (3) and water injection cylinder (5) are arranged on the support plate (12) , comprising two water injection cylinders in one group of water injection cylinders (5). 3. The hydraulic booster water injection pump according to claim 1, characterized in that, the hydraulic cylinder (2) and the water injection cylinders (5) at both ends are fixedly connected through guide blocks (10), and the inside of the guide blocks (10) Block the piston rod (8). 4. The hydraulic booster water injection pump according to claim 3, characterized in that, said guide blocks (10) are provided with lubricating devices (11) for providing lubrication to the water injection cylinder (5). 5. The hydraulic booster water injection pump according to claim 4, characterized in that, the lubricating device (11) is an oil pipe. 6. The hydraulic pressurized water injection pump according to claim 1 or 4, characterized in that a piston (9) with a corrosion-resistant isolation plate (13) is provided at both ends of the piston rod (8).