Leak point location method of buried gas pipeline
A positioning method and technology for gas pipelines, which are used in pipeline systems, gas/liquid distribution and storage, mechanical equipment, etc., can solve problems such as low positioning accuracy, waste of manpower, material resources and time, and inability to accurately locate leakage points.
Active Publication Date: 2020-09-25
GUANGZHOU SPECIAL PRESSURE EQUIP INSPECTION & RES INST
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However, the positioning accuracy of the above method is low, and the leak point cannot be accurately located. Therefore, after the leak signal is detected, it is necessary to use large-scale excavation to further find the leak point, resulting in a serious waste of manpower, material resources and time.
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[0035] In order to make the above objects, features and advantages of the present invention more comprehensible, specific implementations of the present invention will be described in detail below in conjunction with the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. However, the present invention can be implemented in many other ways different from those described here, and those skilled in the art can make similar improvements without departing from the connotation of the present invention, so the present invention is not limited by the specific implementations disclosed below.
[0036] It should be noted that when an element is referred to as being “disposed on” another element, it may be directly on the other element or there may also be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connect...
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The invention relates to a method for locating leakage points of a buried gas pipeline. The method includes the steps of S100, arranging at least two acoustic emission sensors on the buried gas pipeline at intervals along the length direction of buried gas pipeline and allowing the acoustic emission sensors to acquire acoustic emission signals of an emission source; S200, acquiring distance D between the two adjacent acoustic emission sensors and sound velocity V of the material of the buried gas pipeline; V300, acquiring time difference T between the two acoustic emission sensors adjacent tothe leakage points receiving the acoustic emission signals generated by leakage; S400, acquiring the distance d=0.5 (D-T V) from the leakage points to the acoustic emission sensor close to the leakagepoints. The method is high in locating precision and capable of saving manpower, material resources and time.
Description
technical field [0001] The invention relates to the technical field of pipeline detection, in particular to a method for locating leakage points of buried gas pipelines. Background technique [0002] Buried gas pipelines can be used to transport gas media such as gas, and play an important role in national economy and industrial production. Due to factors such as pipeline aging, inevitable corrosion or man-made damage, buried gas pipelines are prone to leakage. Because buried gas pipelines usually transport extremely dangerous flammable and explosive gas media, once a buried gas pipeline leaks, if the leak point cannot be found, serious consequences are likely to occur, such as mass death Therefore, the location of the leakage point of the buried gas pipeline is of great significance to reduce the occurrence of safety accidents. [0003] In the traditional technology, the commonly used methods for locating the leak point of buried gas pipelines include infrared thermograph...
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IPC IPC(8): F17D5/06
CPCF17D5/005F17D5/06
Inventor 周杨飞王志刚肖超波邵翔杨波李洪刚张在东
Owner GUANGZHOU SPECIAL PRESSURE EQUIP INSPECTION & RES INST