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Cut-off valve chamber risk prevention and control device

A cut-off valve and protection device technology, which is applied in the direction of circuit devices, emergency protection circuit devices, emergency protection circuit devices for limiting overcurrent/overvoltage, etc., can solve problems such as inability to effectively prevent and control risks in the cut-off valve chamber, To achieve the effect of avoiding risks

Active Publication Date: 2022-06-03
PETROCHINA CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The embodiment of the present application provides a risk prevention and control device for the cut-off valve chamber, which can solve the problem that the risk in the cut-off valve chamber cannot be effectively prevented and controlled in the related art

Method used

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  • Cut-off valve chamber risk prevention and control device
  • Cut-off valve chamber risk prevention and control device
  • Cut-off valve chamber risk prevention and control device

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Embodiment Construction

[0033] In order to make the objectives, technical solutions and advantages of the present application clearer, the embodiments of the present application will be further described in detail below with reference to the accompanying drawings.

[0034] figure 1 It is a schematic structural diagram of a risk prevention and control device for a shut-off valve chamber provided by the embodiment of the present application, such as figure 1 As shown in the figure, the risk prevention and control device for the shut-off valve chamber includes: a first main pipeline 1, a second main pipeline 2, a gas-liquid linkage ball valve 3, a first pressure-limiting equipotential protection device 4, and a second pressure-limiting equipotential protection device 5 And the grounding body 6 of the shut-off valve chamber. The first main pipeline 1 and the second main pipeline 2 are both connected to the gas-liquid linkage ball valve 3, the gas-liquid linkage ball valve 3 is connected to the grounding...

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Abstract

This application discloses a cut-off valve chamber risk prevention and control device, which belongs to the technical field of cut-off valve chamber risk prevention and control. The device includes: the first end of the first voltage-limiting equipotential protection device (4) is connected to the first main pipeline (1), and the first end of the second voltage-limiting equipotential protection device (5) is connected to the second main pipeline (1). 2) Connection, the second end of the first voltage-limiting equipotential protection device (4) and the second end of the second voltage-limiting equipotential protection device (5) are both connected to the grounding body (6) of the cut-off valve chamber, and the first The voltage-limiting equipotential protection device (4) and the second voltage-limiting equipotential protection device (5) are used to control the first voltage-limiting equipotential protection device (4) and the second voltage-limiting equipotential protection according to the detected pipe-to-ground potential. The device (5) is activated to conduct the first main pipe (1) and the second main pipe (2) with the ground body of the cut-off valve chamber, effectively avoiding the occurrence of risks in the cut-off valve chamber.

Description

Technical field [0001] This application relates to the technical field of risk prevention and control of cut-off valve chambers, and in particular to a risk prevention and control device for cut-off valve chambers. Background technique [0002] Usually, the sending end and receiving end of a high-voltage DC transmission line are respectively equipped with grounding bodies of converter stations. When high-voltage DC transmission lines use single-pole operation (maintenance or failure), stray currents often occur. Stray current will flow into the earth through the grounding body of the converter station, then flow through the soil to the underground oil and gas pipelines located near the grounding body of the converter station, and then flow along the oil and gas pipelines to the cut-off valve connected to the underground oil and gas pipelines. room. When stray current flows into the cut-off valve chamber, it will cause insulation damage to the equipment in the cut-off valve...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F17D5/00H02H9/04
CPCF17D5/00H02H9/041Y02E60/60
Inventor 顾清林姜永涛曹国飞张平张火箭王磊磊张国虎吕超刘艳华屠海波张胜利
Owner PETROCHINA CO LTD