Steam Turbine Drain Valve Leak Monitoring at Sealing Interfaces
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Solution Overview
Problem
Existing leakage monitoring devices for steam turbine pneumatic drain valves have limited monitoring range and performance, requiring manual effort and unable to monitor additional valve bodies or installation interfaces in real time.
Innovation Solution
A leakage monitoring device with an additional valve body, sealing cover, and integrated monitoring assembly that includes a scale processor display screen, leak detector, and filtering pipe fitting, allowing for real-time leakage detection and monitoring of the installation interface between the valve body and sealing cover.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a hand-held leakage detector is used for monitoring, then the device is simple and easy to operate, but it requires manual effort and cannot monitor in real time
Solution Approach 1:
The patent replaces the mechanical hand-held leakage detector with an automated monitoring system that uses acoustic sensors and electronic signal processing to detect and locate leaks automatically, eliminating the need for manual operation while providing continuous real-time monitoring
Solution Approach 2:
The monitoring system performs self-diagnosis and automatic leak detection without requiring human intervention, with the electronic system automatically processing signals and identifying leak positions through built-in algorithms
2Device complexity
If a fixed-point monitoring device is used, then the device structure is simple, but the monitoring range is limited and cannot cover additional valve bodies
Solution Approach 1:
The monitoring device is designed with multi-functional capabilities to monitor multiple locations including the original valve body, additional valve bodies, and various installation interfaces simultaneously, making it universally applicable to different monitoring points without requiring separate devices
Solution Approach 2:
The monitoring system is divided into multiple independent detection modules that can be positioned at different locations (valve body, additional valve body, installation interfaces), with each module contributing to the overall monitoring coverage while maintaining system simplicity
3Device complexity
If existing monitoring devices are used, then the device structure is simple, but they cannot monitor the installation interface between additional valve body and additional sealing cover
Solution Approach 1:
The monitoring system extends detection coverage to previously unmonitored dimensions by placing sensors at the installation interfaces between additional valve bodies and sealing covers, adding new spatial dimensions to the monitoring coverage without significantly increasing device complexity
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables comprehensive and real-time leakage monitoring of pneumatic drain valves, including additional valve bodies and installation interfaces, reducing manpower requirements and preventing steam and water wastage.
Implementation Method 1
a leak detector installed in a middle of a bottom of the scale processor display screen, and is inserted on the top of the additional sealing cover
Data Source
AI summary
Provided is a leakage monitoring device for a pneumatic drain valve of a steam turbine. The disclosure relates to the technical field of leakage monitoring of drain valve. The device includes an additional valve body, a top flange of the additional valve body is provided with an additional sealing cover, a bucket is installed in a middle of an inner side of the additional valve body, an upper part of a left side of an outer surface of the additional valve body is fixedly connected with a water inlet pipe, a first guide cavity is vertically arranged on the inner side of the additional valve body and close to the water inlet pipe and is communicated with the water inlet pipe.