Control method and device of oil pumping unit

A pumping unit and operating frequency technology, applied in the field of control methods and devices of the pumping unit, capable of solving problems such as complicated realization and inaccurate adjustment effect

Inactive Publication Date: 2019-06-04
北京龙鼎源科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The embodiment of the present application provides a control method and device for a pumping unit to at least solve the problems in the related art that the frequency adjustment scheme of the pumping unit is complicated and the adjustment effect is inaccurate

Method used

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  • Control method and device of oil pumping unit
  • Control method and device of oil pumping unit
  • Control method and device of oil pumping unit

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0125] The method embodiment provided in Embodiment 1 of the present application can be executed in a computing device similar to a remote terminal unit (RTU), and the RTU can be used to control the pumping unit and can be integrated on the pumping unit. Take running on the remote terminal unit RTU as an example, Figure 7 It is a block diagram of the hardware structure of the remote terminal unit RTU of the control method of a pumping unit according to the embodiment of the present application, such as Figure 7 As shown, the remote terminal unit RTU may include one or more ( Figure 7 Only one is shown in ) processor 702 (processor 702 may include but not limited to processing devices such as microprocessor MCU or programmable logic device FPGA) and memory 704 for storing data, optionally, the above-mentioned remote terminal unit The RTU may also include transmission means 706 and input and output devices 708 for communication functions. Those of ordinary skill in the art ...

Embodiment 2

[0295] This embodiment also provides a control device for an oil pumping unit, which is used to implement the above embodiments and preferred implementation modes, and those that have already been described will not be repeated. As used below, the term "module" may be a combination of software and / or hardware that realizes a predetermined function. Although the devices described in the following embodiments are preferably implemented in software, implementations in hardware, or a combination of software and hardware are also possible and contemplated.

[0296] According to another embodiment of the present application, a control device for a pumping unit is also provided, including:

[0297] The adjustment module is used to adjust the motor operating frequency of the pumping unit, and obtain the ratio or product corresponding to different motor operating frequencies, wherein the ratio is the ratio of the dynamometer area to the stroke time, or the ratio is the pump The ratio ...

Embodiment 3

[0306] The embodiment of the present application also provides a storage medium. Optionally, in this embodiment, the above-mentioned storage medium may be configured to store program codes for performing the following steps:

[0307] S1, adjust the motor operating frequency of the pumping unit, and obtain the ratio or product corresponding to different motor operating frequencies, wherein the ratio is the ratio of the area of ​​the dynamometer diagram to the stroke time, or the ratio is the ratio of the pump fullness and The ratio of the stroke time, or, the product is the product of the area of ​​the dynamometer diagram and the stroke times, or, the product is the product of the pump fullness and the stroke times of the dynamometer diagram;

[0308] S2. When the ratio or product reaches a maximum value, determine that the stroke corresponding to the maximum value is the optimal stroke, and control the pumping unit to run at the motor operating frequency corresponding to the opt...

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Abstract

The invention provides a control method and device of an oil pumping unit. The method comprises that a factor in positive correlation with a liquid producing volume of the oil pumping unit is obtainedby means of a lot of calculation, the factor can represent relation as ratio or product between work parameters of the oil pumping unit, a motor operation frequency of the oil pumping unit is adjusted to obtain ratios or products corresponding to different frequencies, the present operation frequency of the motor is optimal when the ratio or product is maximal, and the motor is set to run in theoptimal frequency subsequently. The optimal frequency of the motor is found simply and accurately by obtaining the maximum of the ratio or product, and the problem that a frequency regulation scheme of the oil pumping unit in the related art is complex to realize and in accurate in the adjusting effect is solved.

Description

technical field [0001] The present application relates to but is not limited to the petroleum field, and in particular, relates to a method and device for controlling an oil pumping unit. Background technique [0002] In related technologies, the pumping unit oil production controller system is the core of the digital pumping unit, which is integrated in the pumping unit control cabinet and has data acquisition and remote control functions. The oil production control system of the pumping unit generally integrates an oil well data acquisition module to realize the automatic adjustment and balance of the pumping unit, the automatic adjustment of stroke times and the protection of the motor. [0003] Related digital pumping unit features: 1. Automatically adjust the balance. Regulatory goal: energy saving. The balance degree of the pumping unit is adjusted through the forward and reverse rotation control of the balance adjustment motor, and the adjustment target is to make t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02P27/04
Inventor 贺荣汪远广徐仁佐高明殷涛
Owner 北京龙鼎源科技股份有限公司
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