Magnetic flux leakage pig
A technology of magnetic flux leakage and body, applied in the direction of permanent magnets, magnetic objects, electrical components, etc., can solve the problems of complicated pipelines, difficult to maintain the integrity and stability of pipelines, etc.
Active Publication Date: 2022-02-22
韩国天然气公社
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Problems solved by technology
[0002] Pipeline facilities are one of the structures of various infrastructures, and with the development of industry, large-scale structures have increased, so the pipelines used for this structure have also become complicated
For example, a complex pipeline system is required to transport natural gas from LNG terminals to ordinary households or industrial sites, and the pipeline system is laid underground according to urban and land use plans, making it difficult to maintain pipeline integrity and ensure its stability
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[0028] Objects, specific advantages and novel features of embodiments of the present invention will become more apparent from the following detailed description and exemplary embodiments in connection with the accompanying drawings. It should be noted that, in this specification, when reference numerals are given to components of each drawing, even if the same components are shown on different drawings, they have the same reference numerals. Additionally, terms such as "upper surface", "lower surface", "first", and "second" are used to distinguish one element from another, and these elements are not limited by these terms. Hereinafter, in describing the embodiments of the present invention, detailed descriptions of related well-known technologies that may unnecessarily obscure the subject matter of the embodiments of the present invention are omitted.
[0029] Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawi...
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A magnetic leakage flux PIG according to an embodiment of the present invention includes: a body formed to move in a gas flow direction inside a pipe; and a plurality of magnetization modules coupled to an outer peripheral surface of the body in its circumferential direction. . Each magnetizing module includes: a support coupled to the body; a module body configured to contact the inner peripheral surface of the pipe; a pair of rods axially coupled to the module body at their respective one ends, and The other end of the shaft is axially coupled to the opposite end of the support, so that the magnetization module shrinks or expands according to the diameter change of the pipe, and it can be rotated by the bidirectional rotation of each shaft coupling part; and the suspension part, the suspension part Including: an elastic support body having one surface fixed on the support and elastically supporting the rod; and a pair of first rollers respectively coupled to opposite ends of the elastic support body and rod contact.
Description
technical field [0001] The present invention generally relates to a magnetic flux leakage PIG. More particularly, the present invention relates to a magnetic flux leakage PIG configured to allow reducing friction between the pipeline and the PIG, enabling the PIG to operate in pipelines with low operating pressures. Background technique [0002] The piping facility is one of the structures of various infrastructures, and with the development of the industry, large-scale structures have been increased, and therefore, the pipelines used for the structures have also become complicated. For example, complex pipeline systems are required to transport natural gas from LNG terminals to common household or industrial sites, and the pipeline systems are laid underground according to city and state use plans, making it difficult to maintain pipeline integrity and ensure its stability. Therefore, it has become very important to discover pipeline defects due to aging or corrosion of th...
Claims
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IPC IPC(8): F16L55/28H01F13/00H01F7/02F16L101/30
CPCF16L55/28H01F7/02H01F13/00F16L2101/30
Inventor 刘辉龙赵诚浩金东奎金相爀金大光金在晙梁承雄
Owner 韩国天然气公社