Negative pressure leak detection cover for ship pipeline

Abstract

Provided is a ship pipeline negative pressure leakage detection cover. The negative pressure leakage detection cover is of a rectangular bag structure, and comprises films, a framework clamping chain, mighty cement gum, vacuum sealing silicone grease, an elastic belt and a magnet. The negative pressure leakage detection cover coats a piece to be tested tightly. The framework clamping chain is used for sealing the thermoplastic polyurethane film, pressure-sensitive adhesives (the mighty cement gum) and the magnet are used for sealing the sealing surface of a pipeline externally, and the elastic belt coats the pipeline for sealing internally. When negative pressure leakage occurs in the piece to be detected, the detection cover contracts fast and is attached to the surface of the piece to be tested, and the leakage degree can be determined by reading the pressure difference of a digital negative pressure meter. The negative pressure leakage detection cover is an online testing device, can check and determine the leakage portions fast, is convenient and fast to install, convenient to use and obvious in indication, can detect leakage conveniently and fast, and is especially suitable for detection and maintenance of a ship cabin, a steam turbine, refrigeration equipment and an air pumping system.

Description

technical field [0001] The invention relates to a vacuum detection auxiliary device, in particular to a ship pipeline negative pressure leak detection cover used in a vacuum (negative pressure) system of ships and other equipment. Background technique [0002] With the high development of modern science and technology, the vacuum vessels and systems used in industry, commerce, science and research institutions are getting larger and larger. Since the manufacturing process cannot be perfect, there are tens of thousands of sealing points. During use, as the components age and loosen, the sealing device inevitably has the possibility of leakage. In actual production and life, it is impossible for any part that requires sealing to be absolutely "no leakage". The "no leakage" or "no leakage" we usually talk about just means that the actual leakage is very small, and people use it. If the instrument cannot detect or affect a certain use requirement, people stipulate that the leak...

AI Technical Summary

Problems solved by technology

The domestic and foreign research on online leak detection of vacuum systems is mainly in the following aspects: (1) Ultrasonic detection. Ultrasonic technology detects vacuum system leaks. It has the characteristics of simple, accurate and low cost detection, but it needs to use Suspected leaks are detected at close range (within 15cm), and ultrasonic testing requires that leaks must emit ultrasonic waves of a certain intensity. Once leaks do not meet the requirements, or the background ultrasonic noise is too large, leaks cannot be detected; (2) Candle detection , the candle method is the most primitive method, and it is still used in some emergency or simple occasions, but the candle method has potential safety hazards

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