A shaft seal water flow monitoring device
By installing a DC generator and flow processing device at the end of the shaft seal water pipeline of a large water pump in a nuclear power plant, the flow rate is monitored by converting kinetic energy into electrical energy. Combined with LED indicator lights, long-distance, economical, and accurate flow monitoring is achieved, solving the problem of long-distance monitoring of the flow rate of the shaft seal water in nuclear power plant water pumps.
CN122106872APending Publication Date: 2026-05-29CNNC FUJIAN FUQING NUCLEAR POWER
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- CNNC FUJIAN FUQING NUCLEAR POWER
- Filing Date
- 2024-11-29
- Publication Date
- 2026-05-29
AI Technical Summary
Technical Problem
The flow rate of shaft seal water in large water pumps at nuclear power plants is difficult to monitor remotely. Existing methods are costly or rely on inaccurate manual observation, which increases the risk of equipment operation.
Method used
Design a shaft seal water flow monitoring device that utilizes a DC generator and a flow processing device to convert kinetic energy into electrical energy through an impeller, and combines it with LED indicator lights to achieve long-distance flow monitoring. An alarm value can be set by adjusting the knob.
Benefits of technology
It enables long-distance, economical, and intuitive flow monitoring, reduces personnel workload, lowers equipment modification costs, and improves the accuracy and timeliness of monitoring.
✦ Generated by Eureka AI based on patent content.
Smart Images
Figure CN122106872A_ABST
Abstract
This invention belongs to the field of water pump shaft seal water flow monitoring technology, specifically relating to a shaft seal water flow monitoring device. One end of the device bracket is connected parallel to a DC generator, and the other end is fixedly connected to the end of the shaft seal water pipeline. The hydraulic impeller faces the outlet of the shaft seal water pipeline. One end of the DC generator is connected to the hydraulic impeller, and the other end is connected to a flow processing device via a lead wire. The upper right side of the flow processing device has a junction box for indicator lights, which is connected to a red lower limit alarm light, a white alarm light, a yellow upper limit alarm light, and a green normal operation light. The lower right side of the flow processing device includes a flow upper limit setting display screen, a flow upper limit setting knob, a flow lower limit setting display screen, a flow lower limit setting knob, a pre-alarm display screen, a pre-alarm setting knob, and an actual flow display screen. Four blades are distributed at 90° around the hydraulic impeller shaft. This invention enables remote observation or remote camera observation of whether the shaft seal flow of a large water pump is normal.
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