Timely detection and repair of leaks is a critical maintenance aspect in ensuring the safe and efficient operation of fire protection piping systems. China's fire protection and water supply departments have widely adopted a variety of advanced leak detection techniques aimed at quickly locating and repairing leaks and reducing water loss. The following are some of the commonly used detection methods in current practice, as well as the outlook for future trends.
1. Environmental Investigation Method: Collection and Analysis of Intuitive Clues
The environmental investigation method is a direct and intuitive means of initial screening, focusing on collecting information on the possible clues and scope of the leak. The method is based on detailed on-site research, including consulting water supply pipe network diagrams, interviewing relevant personnel, and conducting a comprehensive examination of pipe layouts, materials and their surroundings. Potential leakage areas can be initially determined by observing phenomena such as unusually wet road surfaces, early snow melting in winter, lush vegetation, and continuous flow of fresh water from drains. This method lays the foundation for subsequent precise localization.
2. pipeline leak detector audio-audible leak detection method: from clue tracking to accurate positioning
The pipeline leak detector is divided into three levels: valve spigot listening, road surface listening and drilling localization, which serve for the initial positioning and precise confirmation of leaks. pipeline leak detector valve spigot listening and pipeline leak detector road surface listening are used for wide-area investigation, identifying the approximate scope of leaks; while drilling localization uses the pipeline leak detector to locate the leaks in a wide area. Drill Locate utilizes more specialized equipment to probe deeper into the known leak area to pinpoint the leak. This series of steps ensures comprehensive coverage from macro to micro, effectively improving the accuracy of leak detection.
3. pipeline leak detector ground listening method: pinpointing leaks
Once the pipe section suspected of leaking has been locked by the preliminary method, the pipeline leak detector ground listening method becomes the key to further pinpointing the leak. Using a professional leak detector, the pipeline leak detector will listen to the leak every 50 to 70 centimeters and analyze the abnormal signal points until the interval is reduced to less than 20 centimeters. When approaching the leakage point, the sound signal of water leakage captured by the pipeline leak detector will reach its peak value. Considering the interference of ambient noise, such listening operations are usually scheduled between 1:00 and 5:00 in the dead of night to ensure the accuracy of the detection.
Looking to the future: automatic monitoring and zonal detection
With the improvement of water supply network management standards and continuous innovation of technology, regional leakage noise automatic monitoring method and zonal leak detection method is gradually becoming the industry's new favorite. Through continuous monitoring and intelligent analysis, these advanced technologies are able to detect and report leaks at the first time, significantly accelerating the response time and effectively reducing the leakage rate. In the future, the popularization and application of these methods will further enhance the intelligent level of fire pipeline management, promote the efficient use of resources, and provide stronger protection for urban safety.
