Apparatus for mechanically preventing reverse rotation of canned motor pump
The mechanical anti-reverse rotation device for canned motor pumps addresses the need for external lubrication and power by using a rotor-stator-wedge system with a permanent magnet and sensor, ensuring stable operation and real-time wear detection, enhancing safety and efficiency.
WO2026155515A1PCT designated stage Publication Date: 2026-07-23HYOSUNG GOODSPRINGS
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Patent Information
- Authority / Receiving Office
- WO · WO
- Patent Type
- Applications
- Current Assignee / Owner
- HYOSUNG GOODSPRINGS
- Filing Date
- 2026-01-13
- Publication Date
- 2026-07-23
AI Technical Summary
Technical Problem
Existing anti-reverse devices for canned motor pumps require external lubrication and electrical power, making them unsuitable for hazardous environments and prone to failure during power outages, and lack real-time wear detection capabilities.
Method used
A mechanical anti-reverse rotation device using a rotor, stator, hinges, and wedges with a permanent magnet, which operates without external lubrication or power, and includes a sensor unit for real-time wear detection and maintenance prediction.
Benefits of technology
Ensures stable operation in hazardous environments, prevents reverse rotation without external power, and provides real-time wear detection and maintenance alerts, enhancing safety and efficiency.
✦ Generated by Eureka AI based on patent content.
Smart Images
Figure KR2026000688_23072026_PF_FP_ABST
Abstract
According to an embodiment of the present invention, an apparatus for mechanically preventing the reverse rotation of a canned motor pump comprises: a rotor (110) rotating together with a main shaft of a motor; a stator (120) provided to be spaced apart from the outer circumferential surface of the rotor (110) by a first distance; a plurality of hinges (130) provided in parallel with the main shaft, positioned between the outer circumferential surface of the rotor (110) and the inner circumferential surface of the stator (120), and disposed at a preconfigured interval on a circumference spaced apart from the outer circumferential surface of the rotor (110) by a second distance which is half the first distance; and a plurality of wedges (140) rotatably coupled to the hinges (130) and rotated in one direction by a centrifugal force applied thereto along the direction of flow of a fluid (F) provided in a space formed between the rotor (110) and the stator (120). A gap (D) is formed between the wedges (130) and the rotor (110) during a forward rotation such that the fluid (F) can pass through the same. During a reverse rotation, one end of each wedge (140) returns to a position in which same contacts the outer circumferential surface of the rotor (110). At the same time, the other end of each wedge (140) contacts the inner circumferential surface of the stator (120) such that the gap (D) disappears, thereby limiting the reverse rotation of the rotor (110).
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