Electric control energy saving device for oil pump unit

An energy-saving device, electromechanical technology, applied in the direction of AC motor control, energy industry, electrical components, etc., can solve problems such as power grid impact, external equipment interference, etc., and achieve the effect of filtering harmonic interference

Inactive Publication Date: 2006-10-11
郭士森 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When multiple motors are running in the power grid, concentrated harmonics are likely to cause a huge impact on the power grid and seriously interfere with external equipment

Method used

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  • Electric control energy saving device for oil pump unit

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Embodiment Construction

[0023] see figure 1 The electric control energy-saving device of the motor of the pumping unit shown in the present invention includes: a group of three-phase (380 volts alternating current) air switch 1, which is used to cut off the internal circuit of the external power supply and the electric control energy-saving device of the motor of the pumping unit The connection between them can also be used as a short circuit or extreme overcurrent protection element; a group of relays 2 are connected to the downstream end of the air switch 1, and when a phase loss or overcurrent condition occurs, the output of the controller Ct Under signal control, the relay 2 disconnects the main circuit to protect the pumping unit motor 24 connected to the main circuit; a group of variable step-down inductors 9, 10, 11 are respectively composed of the main circuit inductance coils L1, L3, L5 and auxiliary inductance coil L2, L4, L6 constitute, and its described main loop inductance coil L1, L3, L...

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Abstract

In this invention, the electric control energy-saving device for oil-pumping motor comprises: (1). the variable voltage-dropping inductors, composed of main-loop induction coils (L1, L3, L5) and auxiliary induction coils (L2, L4, L6), said main-loop induction coils being connected to the power lines of the three phases of the oil-pumping motor; (2) the bidirectional silicon control, which being series connected to said auxiliary induction coils; (3). power induction devices, being equipped to the power lines of three phase of the motor; and (4). a controller, which signal input end being conencted to the output end of the power induction device, while which signal output end being connected to the control pole of the bidirectional silicon control. This invention product has advantages of: saving energy and lowering consumption of unavilable power, and eliminating the impact of resonance wave against electric network.

Description

technical field [0001] The invention relates to a motor energy-saving device for an oil field pumping unit. Specifically, the motor electric control energy-saving device of the pumping unit of the present invention further improves the matching relationship between the output power of the motor and the working load of the pumping unit through the improvement of the motor output power control device to achieve the effect of energy saving. Background technique [0002] The pumping unit is a kind of oil production machinery widely used in my country's oilfields. In various oil fields in our country, the number of pumping units is large, the capacity is large, the instantaneous active power is large, and the average active power is small, so the power factor is low. In Chinese patent documents CN2559835, CN1512656A, CN2473728, CN1188340A, CN2282746, CN2033444, etc., it is disclosed that the power factor is improved by adjusting the matching relationship between the output power...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02P25/00H02J3/18E21B43/12
CPCY02E40/30Y02P80/10
Inventor 郭士森
Owner 郭士森
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