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Non-contact power transmission system and its application in downhole rotary steerable mechanism

A power transmission system and non-contact technology, applied in the control/regulation system, output power conversion device, electrical components, etc., can solve the problems of harsh underground working environment, life and reliability cannot be guaranteed, slip rings are easy to wear, etc. , to improve safety and reliability, meet power demand, and reduce system loss

Active Publication Date: 2018-11-23
BEIJING HENGTAI WANBO GASOLINEEUM TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, contact slip rings are generally used to achieve energy transmission. However, the underground working environment is very harsh. Under strong shock and vibration, slip rings are easy to wear and tear, and their life and reliability cannot be guaranteed.

Method used

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  • Non-contact power transmission system and its application in downhole rotary steerable mechanism
  • Non-contact power transmission system and its application in downhole rotary steerable mechanism
  • Non-contact power transmission system and its application in downhole rotary steerable mechanism

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Experimental program
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Effect test

Embodiment 1

[0032] Such as Figure 1-2 As shown, the embodiment of the present invention provides a non-contact power transmission system, which includes in sequence according to the current direction: an alternator, a primary power frequency rectification filter circuit, a high frequency inverter circuit, a rotary transformer, and a secondary high frequency rectification filter circuit , a voltage stabilizing circuit and a DC motor, the rotary transformer includes a rotor and a stator, the rotor is located inside the stator, the rotor can rotate relative to the stator, and there is a gap between the rotor and the stator Air gap, a primary magnetic core is provided on the outer surface of the rotor, a secondary magnetic core is provided on the inner surface of the stator, and both the primary magnetic core and the secondary magnetic core are E-type magnetic cores , the opening faces of the two E-shaped magnetic cores are opposite to form two small windows, and a primary coil and a seconda...

Embodiment 2

[0066] An embodiment of the present invention provides an application of a non-contact power transmission system in an underground rotary steering mechanism, the alternator is a mud generator, the rotor is a drill collar, and the stator is a deflection-correcting looper.

[0067] Wherein, the structure and function of the non-contact power transmission system are described in detail in Embodiment 1, and will not be repeated here.

[0068] When the alternator is a mud generator, the rotor is a drill collar, and the stator is a deflection-correcting looper, the non-contact power transmission system can be applied to the downhole rotary steering mechanism to meet the power requirements of the downhole rotary steering mechanism. requirements, avoiding various disadvantages of contact energy transmission, and greatly improving the safety and reliability of the system.

[0069] By adopting the above technical solution disclosed in the present invention, the following beneficial effe...

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Abstract

The invention discloses a contactless power transmission system and an application thereof in an underground rotary steering mechanism, and relates to the technical field of oil drilling equipment. According to the power transmission system, energy transmission of power from a rotatable part to a non-rotatable part is finished through a separable rotary transformer, various disadvantages of contact energy transmission are avoided and the safety and the reliability of the system are greatly improved, so that the electricity demand of the underground rotary steering mechanism is met; and meanwhile, no signal interaction is needed between a primary circuit and a secondary circuit of the rotary transformer and the circuit complexity is greatly reduced. Furthermore, the system loss is reduced through a soft switching technology and a resonance technology and the transmission efficiency is improved.

Description

technical field [0001] The invention relates to the technical field of petroleum drilling equipment, in particular to a non-contact electric energy transmission system and its application in an underground rotary steering mechanism. Background technique [0002] Rotary steerable and logging while drilling systems represent the highest level of drilling and logging technology in the world today. The hydraulic drive mechanism of the rotary steerable system is designed on the deviation correction loop, and the required electric energy is provided by the mud generator on the drill collar. , while there is relative rotation between the drill collar and the deflection correcting looper. At present, contact slip rings are generally used to realize energy transmission. However, the underground working environment is very harsh. Under strong shock and vibration, slip rings are easy to wear, and their life and reliability cannot be guaranteed. Contents of the invention [0003] The...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J50/12H02M3/335H02K47/06
CPCH02K47/06H02M3/33523
Inventor 高增欣
Owner BEIJING HENGTAI WANBO GASOLINEEUM TECH