High-temperature self-adaptive electronic soft start device and method

An adaptive and soft-start technology, applied in earthwork drilling, adjusting electrical variables, instruments, etc., can solve problems such as current shock, communication errors of formation testing instruments, and affecting the communication quality of formation testing instruments, so as to prevent the impact of communication quality , Improve safety and stability, and ensure quality

Pending Publication Date: 2021-11-16
CHINA NAT OFFSHORE OIL CORP +1
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

Since the power of the refrigeration system is relatively large, when the refrigeration system is turned on, it will cause a large current impact on the power supply system of the downhole instrument, causing the AC voltage of the cable to drop by 30V instantaneously.
Therefore, if only according to the prior art, the communication quality of the stratum testing instrument will be affected, and the communication of the stratum testing instrument will be wrong

Method used

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  • High-temperature self-adaptive electronic soft start device and method
  • High-temperature self-adaptive electronic soft start device and method
  • High-temperature self-adaptive electronic soft start device and method

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Embodiment Construction

[0039] Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited by the embodiments set forth herein. Rather, these embodiments are provided for more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art.

[0040] figure 1 A schematic structural diagram of a high-temperature self-adaptive electronic soft-start device according to an embodiment of the present invention is shown, as figure 1 As shown, the device includes: a first sampling module 101, a second sampling module 102, a temperature acquisition module 103, a control module 104, an adjustment module 105 and a soft start module 106; wherein,

[0041] In the first sampling modu...

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Abstract

The invention discloses a high-temperature self-adaptive electronic soft start device and method. The device comprises a first sampling module, a second sampling module, a temperature acquisition module, a control module, an adjusting module and a soft start module, the control module is used for receiving an input end voltage signal, a load end voltage signal, a load end current signal and a temperature signal acquired by the first sampling module, the second sampling module and the temperature acquisition module, calculating a control signal curve for controlling the adjusting module, and controlling the adjusting module by using the control signal curve; and the input end of the soft start module is connected with the control module, and the soft start time of the device is controlled by adjusting parameters of the soft start module. According to the invention, the working parameters in the device can be adaptively adjusted, the soft start of the device is realized, the current at the load end slowly rises, and the safety and stability of the operation of the whole device are effectively improved.

Description

technical field [0001] The invention relates to the field of formation testing, in particular to a high-temperature self-adaptive electronic soft-start device and method. Background technique [0002] With the development of high-temperature formation testing technology, the precision requirements for downhole testing are getting higher and higher, and the high temperature downhole will cause the dark current noise of the optical sensor in the testing instrument to increase exponentially. In order to ensure the quality of these optical signals in the test instrument, it is necessary to control the cooling of the main optical components in the downhole, so that the optical probe can always work in a low temperature environment. [0003] In the prior art, the refrigeration system for downhole testing instruments usually adopts semiconductor secondary refrigeration design, and the refrigeration temperature difference can reach 40°C. Since the power of the refrigeration system ...

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Application Information

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IPC IPC(8): G05F1/46E21B49/00
CPCG05F1/46E21B49/00
Inventor沈阳周明高
OwnerCHINA NAT OFFSHORE OIL CORP