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Electric control energy saving device for oil pump unit

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

Inactive Publication Date: 2005-03-02
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 shown pumping electromechanical energy-saving device of the present invention includes: a set of three-phase (380 volt alternating current) air switch 1, which is used to cut off the external power supply and the internal circuit of the pumping electromechanical energy-saving device At the same time, it can also be used as a protection element for short-circuit or extreme over-current; a group of relays 2 are connected to the downstream end of the air switch 1, when a phase loss or over-current occurs, the output of the controller Ct Under signal control, the relay 2 disconnects the main circuit and protects the pumping unit motor 24 connected to the main circuit; a set of variable step-down inductors 9, 10, 11, which are respectively composed of main circuit inductance coils L1, L3, L5 and auxiliary inductance coils L2, L4, L6 are formed. The main loop inductance coils L1, L3, and L5 are connected in series with each phase power line of the pumping unit mo...

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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 an energy-saving device for a motor of a pumping unit in an oil field. Specifically, the electrical 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 work load of the pumping unit by improving the output power control device of the motor to achieve the effect of energy saving. Background technique [0002] Pumping unit is a kind of oil extraction machinery widely used in my country's oil fields. 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. Chinese patent documents CN2559835, CN1512656A, CN2473728, CN1188340A, CN2282746, CN2033444, etc. disclose that the power factor can be improved by adjusting the matching relationship between the output power of the motor and t...

Claims

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Application Information

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