自适应矿井排水泵组系统

The adaptive mine drainage pump system, controlled by series pump sets and frequency converters, solves the problems of head adjustment and shaft seal reliability in deep well drainage systems. It achieves flexible head adjustment and improved seal stability, adapts to different drainage needs, and ensures efficient system operation and emergency response capabilities.

CN121520212BActive Publication Date: 2026-07-17XINGCHENG CITY WATER PUMP MFG CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
XINGCHENG CITY WATER PUMP MFG CO LTD
Filing Date
2025-11-14
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

Traditional multistage centrifugal pumps in deep well drainage systems suffer from problems such as large structural size, difficult transportation and installation, and poor long-term reliability of shaft sealing systems. They also have difficulty adapting to water scaling, pipeline corrosion, and changes in pipeline resistance caused by flow rate variations, resulting in insufficient head adjustment capability.

Method used

An adaptive mine drainage pump system is adopted, which connects type A, type B and type D pumps in series and uses a pressure detection unit and frequency converter to control the speed of type D pump. The total output head of the pump set is adjusted to match the changes in pipeline resistance. At the same time, a stepped pressure reduction gap sealing device is set at the shaft seal of the high-pressure pump body to achieve automatic head adjustment and improve the stability of the seal.

Benefits of technology

It enables flexible adjustment of the pump head in deep well drainage systems, improves the stability of pump unit operation and the reliability of shaft sealing system, adapts to different drainage needs, and ensures efficient system operation and emergency response capabilities.

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Abstract

本发明涉及离心泵技术领域，具体是一种自适应矿井排水泵组系统。包括：额定流量相同的甲型泵、多个乙型泵和丁型泵依次串联构成的泵组单元；用于检测所述泵组单元及其中各泵运行压力的压力检测单元；控制单元，以及由所述控制单元控制的变频器；丁型泵的额定扬程高于乙型泵的额定扬程。采用特定串联结构的泵组单元并配合压力检测与控制单元，使丁型泵具备转速调节能力，该系统能够根据管路阻力的变化情况相应调整泵组的总输出扬程，对维持泵组运行工况的稳定性具有积极作用，为解决多泵串联系统中的扬程匹配问题提供了技术途径。
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Citation Information

Patent Citations

  • Rotary shaft sealing device

    CN102003403A

  • Self-balancing multi-stage pump water outlet section stepped spiral groove annular dynamic sealing structure

    CN215566829U