Troubleshooting Method for Insulation Faults of Oil and Gas Pipeline Monitoring Valve Chamber

A technology for oil and gas pipelines and insulation failures, applied in instruments, testing dielectric strength, measuring devices, etc., can solve problems such as damage to insulation components, affecting the effect of cathodic protection, corrosion of oil and gas pipelines, etc., to ensure safety and ensure the effect of cathodic protection. Effect

Active Publication Date: 2020-10-09
PETROCHINA CO LTD
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  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

[0003] If there is an insulation failure of the insulation component, for example, the insulation component is damaged, the cathodic protection current will be transmitted to the grounding equipment through the pipeline, and the pressure transmitter, temperature transmitter, valve actuator and other equipment connected to the pipeline, making the cathodic protection current Loss, affecting the effect of cathodic protection, leading to corrosion of oil and gas pipelines

Method used

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  • Troubleshooting Method for Insulation Faults of Oil and Gas Pipeline Monitoring Valve Chamber
  • Troubleshooting Method for Insulation Faults of Oil and Gas Pipeline Monitoring Valve Chamber

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Embodiment Construction

[0035] In order to make the technical solutions and advantages of the present invention clearer, the embodiments of the present invention will be further described in detail below in conjunction with the accompanying drawings. Unless otherwise defined, all technical terms used in the embodiments of the present invention have the same meanings as commonly understood by those skilled in the art.

[0036] figure 1 It shows a method for troubleshooting the insulation fault of an oil and gas pipeline monitoring valve room, such as figure 1 As shown, the troubleshooting method includes the following steps:

[0037] Step 101, acquiring the potential of the oil and gas pipeline in the monitoring valve chamber and the potential of the grounding equipment in the monitoring valve chamber.

[0038] Step 102, judging whether the potential of the grounding device is lower than a preset value and whether the difference between the potential of the oil and gas pipeline and the potential of ...

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Abstract

The invention discloses an insulation fault checking method for an oil gas pipe monitoring valve chamber. The method comprises that the potential of an oil gas pipe in the monitoring valve chamber andthe potential of a grounding device in the same are obtained; whether the potential of the grounding device is lower than a preset value and whether a potential difference between the oil gas pipe and the grounding device is within a preset range are determined; and if YES, an overground pipe insulator performance tester is used to test the insulation performances of different insulation assemblies in the monitoring chamber. According to the method, whether there is an insulation fault in the monitoring valve chamber is determined, insulation performances of the insulation assemblies in the monitoring valve chamber with the insulation fault are tested one by one, an accurate position of the insulation fault is obtained by checking, and thus, the insulation fault can be corrected timely, acathode protection effect is guaranteed, and the safety of oil gas transmission is ensured.

Description

technical field [0001] The invention relates to the technical field of insulation of an oil and gas pipeline monitoring valve chamber, in particular to a method for troubleshooting insulation faults of an oil and gas pipeline monitoring valve chamber. Background technique [0002] The monitoring valve chamber (that is, the valve chamber with the Remote Terminal Unit (RTU), referred to as the RTU valve chamber) is a kind of long-distance oil and gas pipeline shut-off valve chamber. Pressure transmitters, temperature transmitters, valve actuators, cathodic protection equipment, and programmable logic controller (Programmable Logic Controller, PLC) cabinets and other equipment are arranged in the monitoring valve room. Among them, the pressure transmitter, temperature transmitter and valve actuator are connected with the oil and gas pipeline, and are used to monitor the pressure and temperature in the oil and gas pipeline and control the opening and closing of the valve on the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01R31/12
CPCG01R31/1263
Inventor 刘文会滕延平任涛姜有文温文刘猛孙伶马霖马宏宇张耀坦张一韩朔
Owner PETROCHINA CO LTD
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