CN205117298U - Hold and draw hydro -cylinder hydraulic pumping unit - Google Patents

Abstract

The utility model mentions a hydraulic pumping unit with a tension cylinder, and its technical proposal is: the upper pulley assembly is installed on the top of the base and the bracket assembly; the lower pulley assembly is installed on the lower part of the base and the bracket assembly; the oil cylinder assembly The upper end of the assembly is installed on the top of the base and bracket assembly; the movable pulley assembly is installed at the lower end of the cylinder rod of the oil cylinder assembly; the counterweight assembly is located in the bracket of the base and bracket assembly and can move up and down; one end of the power wire rope is fixed on the On the base of the base and bracket assembly, the other end goes around the moving pulley assembly and the lower pulley assembly and is fixed on the lower part of the counterweight assembly; one end of the working wire rope is connected to the upper part of the counterweight assembly, and the other end goes around the upper pulley assembly into connection with the rope hanger. The beneficial effects are: the oil cylinder assembly is inverted, the cylinder rod only bears the pulling force, the oil cylinder has a long stroke, a small diameter, and low cost; the counterweight assembly is provided with a fixed support for the working wire rope and the power wire rope, the wire rope transmission is soft, and the pumping unit is noisy. Small, easy to install, safe and environmentally friendly.

Description

A tension cylinder hydraulic pumping unit

technical field

The utility model relates to an oil extraction machine used in the petroleum industry, in particular to a hydraulic oil pumping unit and a method for a tension oil cylinder.

Background technique

At present, there are many types of pumping units used in oil production in oil fields. Beam pumping units have many parts, heavy installation workload, low efficiency, complex equipment maintenance, high installed power, large energy consumption, large load changes, and short strokes. The chain pumping unit is noisy, and the stroke cannot be adjusted or is difficult to adjust; the forward and reverse motor pumping unit has a large starting current, low efficiency, and high cost; the hydraulic pumping unit or oil cylinder is thick or the system is complex, and the working conditions are bad; or the stroke is short, Expensive.

Contents of the invention

The purpose of this utility model is to aim at the above-mentioned defects existing in the prior art, and to provide a hydraulic oil pumping unit and a method thereof. The rope device goes up, and the plunger of the oil pump goes up; the gravity of the sucker rod column drives the counterweight to go up through the rope hanger and the wire rope, and drives the movable pulley to go down, so that the plunger of the oil pump goes down. The oil cylinder assembly provides the oil cylinder piston position signal to the hydraulic station assembly to control the reversing of the electromagnetic reversing valve group.

The tension cylinder hydraulic pumping unit mentioned in the utility model includes base and support assembly (1), upper pulley assembly (2), counterweight assembly (3), lower pulley assembly (4), oil cylinder assembly assembly (5), moving pulley assembly (6), working wire rope (7), power wire rope (8), hydraulic station assembly (9), rope hanger (10), the base and bracket assembly (1) There are mounting supports for upper pulley assembly (2), lower pulley assembly (4), oil cylinder assembly (5), and power wire rope (8); the counterweight assembly (3) is connected to the working wire rope (7) and Power wire rope (8); the upper pulley assembly (2) is installed on the top of the base and bracket assembly (1); the lower pulley assembly (4) is installed at the bottom of the base and bracket assembly (1); the oil cylinder The upper end of the assembly (5) is installed on the top of the base and bracket assembly (1); the movable pulley assembly (6) is installed at the lower end of the cylinder rod of the oil cylinder assembly (5); the counterweight assembly (3) is located between the base and the The bracket of the bracket assembly (1) can move up and down; one end of the power wire rope (8) is fixed on the base and the base of the bracket assembly (1), and the other end goes around the movable pulley assembly (6) and the lower pulley assembly ( 4) It is fixed on the lower part of the counterweight assembly (3); one end of the working wire rope (7) is connected to the upper part of the counterweight assembly (3), and the other end goes around the upper pulley assembly (2) and the rope hanger (10 ) connection; the hydraulic station assembly (9) is installed on the base of the base and the bracket assembly (1); the hydraulic station assembly (9) supplies hydraulic oil to the oil cylinder assembly (5); the oil cylinder assembly (5) supplies the hydraulic The station assembly (9) provides the oil cylinder piston position signal to control the reversing of the electromagnetic reversing valve group.

The above-mentioned oil cylinder assembly (5) is installed upside down, wherein the lower end of the cylinder rod is connected to the movable pulley assembly (6), and the cylinder rod only bears tension; the stroke of the pumping unit can be adjusted by adjusting the position of the piston position sensor.

The above-mentioned counterweight assembly (3) is located in the support of the base and support assembly (1) and can move up and down, and the mass of the counterweight assembly (3) is smaller than that of other pumping units with the same load.

The above-mentioned oil cylinder assembly (5) is provided with a piston position sensor and a connecting ear plate of the movable pulley assembly (6).

The above-mentioned hydraulic station assembly (9) is equipped with a pump unit, an oil tank, an accumulator, an electromagnetic reversing valve group, a cooling system, pipelines, pipe fittings and valve parts, and the piston position sensor on the oil cylinder assembly (5) is on the upper and lower The specified position sends out signals alternately to control the electromagnetic reversing valve group to alternate direction.

The beneficial effects of the utility model are: the oil cylinder assembly is inverted, the cylinder rod only bears the pulling force, the cylinder stroke is long, the diameter is small, and the cost is low; adjusting the position of the piston position sensor can easily adjust the stroke of the pumping unit; the upper pulley assembly is installed on the base and On the top of the bracket assembly, the lower pulley assembly is installed on the lower part of the base and bracket assembly, the upper end of the oil cylinder assembly is installed on the top of the base and bracket assembly, and the movable pulley assembly is installed on the lower end of the cylinder rod of the oil cylinder assembly. Reasonable and stable; the counterweight assembly is located in the bracket of the base and bracket assembly and can move up and down, and the mass of the counterweight assembly is much smaller than that of other pumping units with the same load; the counterweight assembly is equipped with working wire ropes and power The fixed support of the wire rope makes the transmission of the wire rope soft; the sucker rod string always bears the tension of the gravity of the counterweight assembly, and the polished rod will never press the sucker rod; the pumping unit has low noise, simple installation, safety and environmental protection.

Description of drawings

Accompanying drawing 1 is the structural representation of the utility model;

Accompanying drawing 2 is the left view of the utility model;

Above: base and bracket assembly 1, upper pulley assembly 2, counterweight assembly 3, lower pulley assembly 4, oil cylinder assembly 5, movable pulley assembly 6, working wire rope 7, power wire rope 8, hydraulic station assembly 9, 10 rope hangers.

detailed description

In conjunction with accompanying drawing 1 and 2, the utility model is further described:

A tension cylinder hydraulic pumping unit mentioned in the utility model includes a base and bracket assembly 1, an upper pulley assembly 2, a counterweight assembly 3, a lower pulley assembly 4, an oil cylinder assembly 5, and a movable pulley assembly 6. Working wire rope 7, power wire rope 8, hydraulic station assembly 9, rope hanger 10, upper pulley assembly 2, lower pulley assembly 4, oil cylinder assembly 5, The installation support of the power wire rope 8; the counterweight assembly 3 connects the working wire rope 7 and the power wire rope 8; the upper pulley assembly 2 is installed on the top of the base and the bracket assembly 1; the lower pulley assembly 4 is installed on the base and The lower part of the bracket assembly 1; the upper end of the oil cylinder assembly 5 is installed on the top of the base and the bracket assembly 1; the movable pulley assembly 6 is installed on the lower end of the cylinder rod of the oil cylinder assembly 5; the counterweight assembly 3 is located on the base and the bracket assembly One end of the power wire rope 8 is fixed on the base and the base of the bracket assembly 1, and the other end is fixed on the lower part of the counterweight assembly 3 by going around the movable pulley assembly 6 and the lower pulley assembly 4; One end of the working wire rope 7 is connected to the upper part of the counterweight assembly 3, and the other end is connected to the rope hanger 10 by bypassing the upper pulley assembly 2; the hydraulic station assembly 9 is installed on the base of the base and the support assembly 1; the hydraulic station The assembly 9 supplies hydraulic oil to the oil cylinder assembly 5; the oil cylinder assembly 5 supplies the oil cylinder piston position signal to the hydraulic station assembly 9 to control the reversing of the electromagnetic reversing valve group.

Wherein, the oil cylinder assembly 5 is installed upside down, wherein, the lower end of the cylinder rod is connected with the movable pulley assembly 6, and the cylinder rod only bears the pulling force; the pumping unit stroke can be adjusted by adjusting the position of the piston position sensor.

In addition, the counterweight assembly 3 is located in the support of the base and the support assembly 1 and can move up and down, and the mass of the counterweight assembly 3 is significantly smaller than that of other pumping units with the same load.

The above-mentioned oil cylinder assembly 5 is provided with a piston position sensor and a connecting ear plate of the movable pulley assembly 6 .

Furthermore, the hydraulic station assembly 9 is provided with a pump unit, an oil tank, an accumulator, an electromagnetic reversing valve group, a cooling system, pipelines, pipe fittings, and valves, and the piston position sensor on the oil cylinder assembly 5 alternates between upper and lower specified positions. A signal is sent to control the alternating direction of the electromagnetic reversing valve group.

A method of using a tension cylinder hydraulic pumping unit mentioned in the utility model includes the following methods:

When the hydraulic station assembly 9 is not started to work, the rope hanger 10 and the movable pulley assembly 6 are at the lowest position under the gravity of the sucker rod column; the counterweight assembly 3 is at the highest position; the hydraulic station assembly 9 is powered on continuously After work, the hydraulic station assembly 9 provides high-pressure hydraulic oil to the oil cylinder assembly 5 to drive the oil cylinder assembly 5 to drive the moving pulley assembly 6 to go up, pull the counterweight assembly 3 down through the power wire rope 8, and pull the rope hanger 10 through the working wire rope 7 Upward; when the cylinder assembly 5 drives the movable pulley assembly 6 to ascend to the specified position, the piston position sensor sends out a signal, and the electromagnetic reversing valve group provided on the hydraulic station assembly 9 switches direction, and the cylinder assembly 5 loses the power of the high-pressure hydraulic oil. The movable pulley assembly 6 descends under the pull of its own weight and the gravity of the sucker rod string; the rope hanger 10 descends under the pull of the gravity of the rod string; when the movable pulley assembly 6 descends to the designated position, the piston position sensor sends out a signal, and the hydraulic station assembly 9 The electromagnetic reversing valve set on the upper side changes the direction, the oil cylinder assembly 5 obtains the power of high-pressure hydraulic oil, and the oil cylinder assembly 5 drives the moving pulley assembly 6 to go up; The replacement direction enables the oil cylinder assembly 5 to drive the moving pulley assembly 6 to perform continuous up and down reciprocating linear motion, so as to realize the continuous up and down reciprocating linear motion of the sucker rod string driven by the rope hanger 10 to move upward and the sucker rod string to go downward under the action of gravity, Drive the downhole oil well pump for continuous oil pumping operation.

The oil cylinder assembly of the utility model is inverted, the cylinder rod only bears the pulling force, the oil cylinder has a long stroke, a small diameter, and low cost; adjusting the position of the piston position sensor can easily adjust the stroke of the pumping unit; the upper pulley assembly is installed on the base and the bracket assembly On the top, the lower pulley assembly is installed on the lower part of the base and bracket assembly, the upper end of the oil cylinder assembly is installed on the top of the base and bracket assembly, and the movable pulley assembly is installed on the lower end of the cylinder rod of the oil cylinder assembly, the structure is reasonable and stable; The counterweight assembly is located in the bracket of the base and bracket assembly and can move up and down. The mass of the counterweight assembly is much smaller than that of other pumping units with the same load; Seat, wire rope transmission is soft; the sucker rod column always bears the tension of gravity of the counterweight assembly, and the polished rod will never press the sucker rod; the pumping unit has low noise, simple installation, safety and environmental protection.

The above descriptions are only some of the preferred embodiments of the present invention, and any person skilled in the art may modify the technical solutions described above or modify them into equivalent technical solutions. Therefore, any simple modification or equivalent replacement made according to the technical solution of the utility model belongs to the protection scope of the utility model.

Claims (5)

1. one kind bears oil cylinder hydraulic oil pumper, it is characterized in that: comprise base and bracket assembly (1), top sheave assembly (2), counterweight assembly (3), lower sheave assembly (4), hydraulic cylinder assembly (5), movable pulley assembly (6), load cable (7), power wire rope (8), Hydraulic Station assembly (9), polished rod eye (10), described base and bracket assembly (1) are provided with the erection support of top sheave assembly (2), lower sheave assembly (4), hydraulic cylinder assembly (5), power wire rope (8); Counterweight assembly (3) connects load cable (7) and power wire rope (8); Described top sheave assembly (2) is arranged on the top of base and bracket assembly (1); Lower sheave assembly (4) is arranged on the bottom of base and bracket assembly (1); The upper end of hydraulic cylinder assembly (5) is arranged on the top of base and bracket assembly (1); Movable pulley assembly (6) is arranged on the lower end of the cylinder bar of hydraulic cylinder assembly (5); The support that counterweight assembly (3) is positioned at base and bracket assembly (1) can move up and down; One end of power wire rope (8) is fixed on the base of base and bracket assembly (1), and the other end walks around the bottom that movable pulley assembly (6) and lower sheave assembly (4) are fixed on counterweight assembly (3); One end of load cable (7) is connected with the top of counterweight assembly (3), and the other end is walked around top sheave assembly (2) and is connected with polished rod eye (10); Hydraulic Station assembly (9) is arranged on the base of base and bracket assembly (1); Hydraulic Station assembly (9) supplies hydraulic oil to hydraulic cylinder assembly (5); Hydraulic cylinder assembly (5) provides cylinder piston position signal to control the commutation of solenoid operated directional valve group to Hydraulic Station assembly (9).

2. according to claim 1ly bear oil cylinder hydraulic oil pumper, it is characterized in that: described hydraulic cylinder assembly (5) is inverted and is installed, wherein, the lower end of cylinder bar connects movable pulley assembly (6), and cylinder bar only bears pulling force; The position-adjustable oil pumper stroke of regulating piston position sensor.

3. according to claim 1ly bear oil cylinder hydraulic oil pumper, it is characterized in that: the support that described counterweight assembly (3) is positioned at base and bracket assembly (1) can move up and down, counterweight assembly (3) quality is less than other with load counterweight of oil pumping unit quality.

4. according to claim 1ly bear oil cylinder hydraulic oil pumper, it is characterized in that: described hydraulic cylinder assembly (5) is provided with the connection otic placode of piston position sensor and movable pulley assembly (6).

5. according to claim 1ly bear oil cylinder hydraulic oil pumper, it is characterized in that: described Hydraulic Station assembly (9) is provided with pump group, fuel tank, accumulator, solenoid operated directional valve group, cooling system, pipeline, pipe fitting and valve member, the piston position sensor on hydraulic cylinder assembly (5) alternately sends signal at upper and lower assigned address and controls the alternately commutation of solenoid operated directional valve group.