产品功能

Product Function

管道穿越高压线路、交流电气化铁路等干扰源时，由于电容耦合、电阻耦合以及电感耦合等方式对管道造成交流干扰，进一步造成管道阴极保护功能失效并加快腐蚀、甚至损坏外加电流设备等问题。固态去耦合器作为常用的排流设备，对解决高压输电线路感应电流、线路的故障接地短路电流、雷击的接地引入电流等产生的交流干扰有非常显著的排流效果。该设备是集钳位式排流、浪涌保护器和火花间隙于一体的交直流干扰处理产品，可以在保证管道的阴极保护效果的同时，对交流干扰进行有效的缓解与消除。

When pipelines cross interference sources such as high-voltage lines and AC electrified railways, AC interference is caused to the pipelines through capacitive coupling, resistive coupling and inductive coupling, which further leads to the failure of pipeline cathodic protection function, accelerated corrosion, and even damage to impressed current equipment. As the most commonly used drainage equipment, the solid-state decoupler has a very significant drainage effect on solving AC interference caused by induced current of high-voltage transmission lines, fault ground short-circuit current of lines, ground introduction current of lightning strikes, etc. The equipment is an AC-DC interference treatment product integrating clamped drainage, surge protector and spark gap. It can effectively alleviate and eliminate AC interference while ensuring the cathodic protection effect of the pipeline.

应用范围

Application Scope

管道电位梯度垫(接地垫)的去耦合

Decoupling of pipeline potential gradient mat (ground mat)

对设备进行交流故障、雷电和开关暂态过程的过电压保护

Overvoltage protection of equipment against AC faults, lightning strikes and switching transient processes

阴极保护系统中用于电气设备的交流接地和直流隔离

Used for AC grounding and DC isolation of electrical equipment in cathodic protection systems

消减交流感应电压

Reduce AC induced voltage

工作原理

Working Principle

固态去耦合器利用电容元件导通稳态交流干扰电流，同时具备故障电流与雷击浪涌的防护能力，还具有精确的直流导通值。该设备对直击雷和感应雷进行排流和电压限 制。各元器件之间采用特殊的智能能量配合方式，保证交流、直流、直击雷、感应雷干扰之间的智能切换、有效动作和能量配合，保障管道故障电流的安全泄放，同时对管道的阴极保护电位影响几乎可以忽略不计。

The solid-state decoupler uses capacitive components to conduct steady-state AC interference current, and also has the protection ability against fault current and lightning surge, as well as an accurate DC conduction value. The equipment drains and limits the voltage of direct lightning and induced lightning. A special intelligent energy coordination method is adopted between various components to ensure intelligent switching, effective action and energy coordination between AC, DC, direct lightning and induced lightning interference, ensure the safe discharge of pipeline fault current, and have almost negligible impact on the pipeline cathodic protection potential.