A type of one-to-two hydraulic pumping unit

By combining a one-to-two hydraulic pumping unit design with a temperature sensor heater, the problems of high energy consumption, low oil production, and poor low-temperature fluidity of hydraulic pumping units are solved. Energy recovery and oil tank heating and insulation are achieved, improving production efficiency and work efficiency.

CN224432510UActive Publication Date: 2026-06-30XIAN DAUTES OIL & GAS ENG SERVICE CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
XIAN DAUTES OIL & GAS ENG SERVICE CO LTD
Filing Date
2025-08-26
Publication Date
2026-06-30

AI Technical Summary

Technical Problem

Existing hydraulic pumping units can only extract oil one-to-one, resulting in low oil production, high energy consumption, and the inability to achieve energy recovery. Furthermore, the hydraulic oil has poor fluidity in low-temperature environments, affecting work efficiency.

Method used

The design employs a one-to-two hydraulic pumping unit, utilizing a proportional valve to control two variable pump motors to work alternately, thereby achieving energy recovery. Temperature sensors and electric heaters are used to maintain the temperature of the hydraulic oil in the tank, ensuring its fluidity.

Benefits of technology

It improved production efficiency, reduced energy consumption, ensured working efficiency in low-temperature environments, and achieved effective energy recovery and heating and insulation of the oil tank.

✦ Generated by Eureka AI based on patent content.

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Abstract

This utility model relates to the field of hydraulic pumping unit technology, and in particular to a one-to-two hydraulic pumping unit, comprising a mounting base plate, with support frames mounted on both the left and right sides of the top front side of the mounting base plate. Servo hydraulic cylinders are installed inside the support frames, and displacement sensors are installed inside the servo hydraulic cylinders. A hydraulic oil tank is bolted to the rear side of the top of the mounting base plate, and a proportional valve and a variable displacement pump motor are bolted to the top of the hydraulic oil tank. An accumulator is connected to the front side of the solenoid valve assembly. The proportional valve controls the two variable displacement pump motors to alternately work to supply oil to the servo hydraulic cylinders at both ends. When one servo hydraulic cylinder rises, the other servo hydraulic cylinder descends, transferring hydraulic energy to the other lifting variable displacement pump motor, causing the servo hydraulic cylinders at both ends to reciprocate. This one-to-two configuration achieves energy recovery and improves production efficiency.
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