Coal mine gas extraction pump energy-saving stable operation regulation and control system and control method thereof

Abstract

The invention discloses a coal mine gas extraction pump energy-saving stable operation regulation and control system and a control method thereof. The coal mine gas extraction pump energy-saving stable operation regulation and control system comprises an equipment operation system, a data collection system and an energy-saving control system. The data collection system is used for collecting, displaying and transmitting the shaft power of a gas extraction pump, the extraction negative pressure, the gas flow, the viscosity of anti-drag liquid, the flow, the temperature and the like. The energy-saving control system sequentially regulates the liquid injection amount of an intelligent liquid preparation filling machine from small to large, and the minimum value of the shaft power of the gas pump, the optimal energy-saving viscosity value of the anti-drag liquid and the corresponding liquid supply flow value are sought under the condition that the requirements for gas extraction negative pressure and flow are not changed. The optimal energy-saving rate and the minimum power consumption value of the gas extraction pump are found out from the optimal matching relation between the viscosity of the anti-drag liquid and the liquid supply amount of the gas extraction pump and the extraction negative pressure (the extraction flow), intelligent control over energy-saving stable operation of the gas extraction pump is achieved, and the optimal energy-saving effect of the gas extraction pump can be kept.

Description

technical field [0001] The invention relates to the technical field of coal mine gas drainage, in particular to an energy-saving and stable operation control system and a control method for a coal mine gas drainage pump. Background technique [0002] At present, the optimization of the coal mine gas drainage system in my country mainly focuses on reducing the resistance of the drainage pipe network, improving the drainage process, and regulating the extraction negative pressure and flow rate, while generally ignoring the power source of the gas drainage system—the gas drainage pump. Energy saving and stable operation. There are tens of thousands of gas drainage pumps running continuously in coal mines in my country throughout the year, and the annual power consumption exceeds 20 billion kWh. Its high consumption, low efficiency and operational stability have always been difficult engineering problems to solve. For this reason, technicians in this field have innovatively prop...

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Problems solved by technology

[0003] However, this technology still has two deficiencies: (1) The operating conditions of the coal mine gas drainage system are complex and changeable. The optimal parameters of liquid resistance (such as viscosity, liquid supply, etc.) are closely related to the type, speed, negative pressure, coal powder and water quality of the mining area of ​​the gas drainage pump. However, there are no corresponding theories and methods for on-site guidance. The implementation of this technology relies entirely on manual experience to adjust and control, and it is impossible to intelligently adjust the concentration of drag reducing fluid to achieve the optimal energy-saving viscosity according to different pumping conditions, so that the maximum energy-saving benefit of this technology cannot be realized, which is not conducive to its application and development. (2) This technology does not take into account the influence of the operation stability of the gas drainage pump on its energy-saving effect, and the stable operation of the gas pump is the basis and premise for realizing its energy saving and consumption reduction, and the related technologies at home and abroad have not Research on intelligent diagnosis and treatment of gas drainage pump operation faults

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