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System and method for fault diagnosis and fault positioning of plurality of metal couple insulation structures

A technology of fault diagnosis and insulation structure, applied in the system field, can solve problems such as misremoval and replacement of insulation structures, changing the internal resistance of equivalent primary batteries, changing the polarity of equivalent primary batteries, etc.

Active Publication Date: 2018-06-12
中国船舶重工集团公司第七0一研究所 +1
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

Especially when the insulation of one of the galvanic structures is damaged, it may seriously affect the equivalent galvanic characteristics of other galvanic structures in the same system, such as greatly increasing or reducing the voltage of the galvanic structure in the same system, changing its equivalent The internal resistance of the primary cell, even changing the polarity of the equivalent primary cell of the adjacent galvanic couple structure
Therefore, if the external characteristic parameters such as voltage, internal resistance, and output current are measured and analyzed according to the law of a single galvanic couple structure, it is very likely that the faulty galvanic couple structure will be misjudged.
In addition, in actual engineering, for seawater pipelines, especially for important equipment such as large-scale pipelines, pumps, and valves, misjudgment of the faulty galvanic structure may lead to the wrong disassembly and replacement of the insulation structure of the seawater pipeline system, resulting in manpower Serious loss of material resources and construction period

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  • System and method for fault diagnosis and fault positioning of plurality of metal couple insulation structures
  • System and method for fault diagnosis and fault positioning of plurality of metal couple insulation structures
  • System and method for fault diagnosis and fault positioning of plurality of metal couple insulation structures

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Embodiment Construction

[0052] Before the system and method for diagnosing and locating faults of multiple metal galvanic insulation structures described in the present invention are further described in detail, the basic principles of the present invention will be described in conjunction with the accompanying drawings.

[0053] figure 1 A dissimilar metal couple structure in a seawater pipeline system that can use the system for fault diagnosis and location of multiple metal couple insulation structures according to the present invention is illustrated.

[0054] Such as figure 1 As shown, the seawater pipeline system in this embodiment includes hull steel pipe 10, sea valve 20, B10 seawater pipe 30, stainless steel filter 40 and seawater pump 50, wherein, hull steel pipe 10, sea valve 20, B10 seawater pipe 30 and stainless steel The filter 40 is made of different metal materials, and an insulator 60 is arranged between the hull steel pipe 10, the sea valve 20, the B10 seawater pipe 30 and the stai...

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Abstract

The invention discloses a system for the fault diagnosis and the fault positioning of a plurality of metal couple insulation structures. The system is configured to be connected with a plurality of heterogeneous metal couple structures which are connected together in series. Each heterogeneous metal couple structure comprises a first metal element, a second metal element connected with the first metal element, and an insulator arranged between the first metal element and the second metal element. The first metal element and the second metal element are made of different metals respectively. The system comprises a control and processing unit, a combined measurement input unit connected with the control and processing unit, and a combined measurement unit connected with the control and processing unit. The combined measurement input unit comprises a plurality of sub-units which are in one-to-one correspondence with the plurality of heterogeneous metal couple structures. The invention further discloses a method for the fault positioning of a plurality of metal couple insulation structures.

Description

technical field [0001] The present invention relates to a system and method, in particular to a system and method for diagnosing and locating galvanic insulation faults. Background technique [0002] Dissimilar metal connection parts of ship equipment and piping systems, such as copper valves are fixedly connected to the steel hull through flanges and bolts, and form a galvanic structure under the action of electrolytes such as seawater, forming a galvanic current in the case of direct connection , resulting in electrochemical corrosion. Insulation structures are usually installed between fastening joints of dissimilar metal materials in ship hulls, valves, piping and other equipment structures to isolate them. This technology is an effective method to prevent and reduce electrochemical corrosion between dissimilar metals, and can isolate galvanic currents. , to reduce and avoid the electrochemical corrosion between metals, so it has been paid more and more attention in the...

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Application Information

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IPC IPC(8): G01R31/08
CPCG01R31/088
Inventor 黄国安张聪岳智君高新华徐金文周欢丁雨洁刘建春杨银清杜章林阮书标邱斌刘袁康张晓东李竹影
Owner 中国船舶重工集团公司第七0一研究所
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