Pumping unit energy-saving device
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- WEIFANG SHENGLI GASOLINEEUM MACHINERY
- Publication Date
- 2017-05-03
- Estimated Expiration
- Not applicable · inactive patent
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Abstract
Description
technical field
[0001] The invention belongs to the technical field of pumping units, in particular to an energy-saving device for pumping units. Background technique
[0002] The pumping unit is an essential equipment in traditional oil extraction, and generally each crude oil production well uses at least one pumping unit. During the working process of the pumping unit, the donkey head suspension point is affected by two types of loads, namely static load and dynamic load (sucker rod string and liquid column load, vibration and impact load, friction load, etc.), dynamic load is inertial load, The inertial load acting on the suspension point divides the upstroke into four stages as the speed changes, the acceleration load increase process, the uniform speed load reduction process, the acceleration load reduction process and the deceleration load increase process. The stage of the loading process corresponds to the process in which the donkey head of the pumping unit descen...