Oil pumping machine and its control system and control method

A technology of control system and pumping unit, applied in the direction of control system, vector control system, motor generator control, etc., can solve the problems of energy saving and consumption reduction and increase production, and achieve increased production capacity, high degree of intelligence, and easy operation simple effect
CN101245697AInactive Publication Date: 2008-08-20项援 +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
项援
Publication Date
2008-08-20
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention relates to an oil extractor which includes a combined main frame, an oil extracting rod, a motor, a motor control system, a transmission device and a weight balanced body. The top part of the main frame is provided with a platform. The platform is provided with the motor, a multi-stage decelerator and a double wrap sheave. The motor is connected with the double wrap sheave by the decelerator. A draught steel wire for the weight balancing body led out from the hole on the circle of the double wrap sheave is fixed on a tighter on the weight balanced body, thus forming a weight balanced operation draught system. The oil extracting rod and one decelerator are connected with one end of a suspension rope. The other end of the suspension rope is fixed on a fixing adjuster on the circle of the double wrap sheave to form an oil extracting rod operation draught system. The oil extractor is characterized in that the combined main frame is also provided with directive wheels that can be separated and combined. The directive wheels are arranged between the decelerator and the fixing adjuster. The invention also relates to a control system and a control method of the oil extractor.
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Description

technical field

[0001] The invention relates to an oil pumping unit, a control system and a control method. technical background

[0002] Pumping units are widely used in oil fields, and beam-type crank-balanced pumping units are widely used in non-spontaneous well production in oil fields. This type has a history of more than 100 years, and its energy consumption is high, the efficiency is low, and the mechanical wear is relatively large at the same time.

[0003] In order to reduce the cost of oil production, energy saving and consumption reduction have become a major issue in increasing the efficiency of various oilfields. In this regard, the petroleum sector has been working hard to make a major breakthrough in terms of energy saving and pumping unit manufacturing cost.

[0004] Chinese patent application 200310100186.X discloses a novel oil pumping and workover rig, which includes a sky wheel shaft, a reducer, a large gear, a pinion, a motor, a hoisting rope of the sk...

Claims

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