Oil pumping unit

Abstract

The invention discloses an oil pumping unit. The oil pumping unit comprises a base, a screw and a connecting rod. A seat is arranged on the upper part of the base, a universal ring is arranged at thebottom of the seat, and a ring groove is formed in the top of the base. The universal ring is arranged in the ring groove, a connecting piece is rotatably arranged on the upper surface of the base, the top of the connecting piece is rotatably connected with a stud, the upper end of the stud is in threaded connection with the lower end of a rotating screw sleeve, the upper end of the rotating screwsleeve is rotatably connected to the lower surface of the seat, the lower end of the screw penetrates the seat and is attached to the upper surface of the base, a bracket is arranged at the upper left of the seat, and an opening is formed in the middle of the bracket. The pumping unit is provided with a sliding rod, a sliding groove and a compression spring. When a walking beam rotates, the sliding rod on one side of the rotation direction of the walking beam slides into the sliding groove, at the same time, the compression spring is extruded, and the compression spring absorbs kinetic energyand reduces the inertial load during rotation of the walking beam; and until the walking beam rotates in the reverse direction, the compression spring releases the kinetic energy, and the effects ofreducing the damage to the capacity and reducing the pressure of the inertial load on a gear are achieved.

Description

technical field [0001] The invention relates to the technical field of oil pumping units, in particular to an oil pumping unit. Background technique [0002] The pumping unit is a kind of machinery used to exploit crude oil in the formation. Among them, the beam pumping unit is widely used because of its simple structure and high stability. Reciprocating motion, while the inertial load when the donkey head swings increases the pressure on the motor gear, and also increases the power loss, reducing the energy utilization efficiency of the beam pumping unit, and the existing beam pumping unit The start-up power of the engine is more than double the normal power, which further reduces the utilization rate of the drive motor power. Due to the complex stratum structure, oil production and water injection cannot completely fill the stratum gap after oil production, which will inevitably lead to partial ground subsidence, making The pumping unit is skewed. The existing pumping uni...

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Problems solved by technology

[0003] The purpose of the present invention is to provide a pumping unit to solve the problem that the donkey head reciprocates up and down when the existing beam pumping unit proposed in the above-mentioned background technology is in operation, and the inertial load increases when the donkey head swings. The pressure on the motor gear also increases the power loss and reduces the energy utilization efficiency of the beam pumping unit, and the starting power of the existing beam pumping unit is about twice the normal power. The utilization rate of the drive motor power is further reduced. Due to the complex stratum structure, oil production and water injection cannot completely fill the stratum gap after oil production, which will inevitably lead to partial ground subsidence, causing the pumping unit to skew. The existing pumping unit is usually not There is a skew compensation structure. Once the pumping unit is skewed, the engineering personnel need to adjust the height of each point of the base. This adjustment method requires a lot of work and is very inconvenient to use.

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