System comprising a discharge electrode assembly and an electrostatic precipitator unit comprising such a system

A system for an electrostatic precipitator unit configured for insertion in a flue gas passageway, comprising:

• a flue gas inlet configured to receive a flow of flue gas,
• a flue gas outlet configured to vent the flow of flue gas,
• a pipe forming a flow passage extending between the flue gas inlet and the flue gas outlet, and
• a discharge electrode assembly,
• wherein the discharge electrode assembly comprises:
• a discharge electrode arranged in the flow passage and configured to be electrically connected to an associated high voltage generator, which provides an electric field in a region around the discharge electrode during use,
• an insulator arranged between the associated high voltage generator and the discharge electrode during use, the insulator having a longitudinal axis fixedly arranged parallel to a central axis of the pipe forming the flow passage,
• a connector pin connected to the discharge electrode at a first end, and
• an insulator connector connecting the insulator and a second end of the connector pin,
• wherein:
• the connector pin comprises a first locking surface at the first end and a second locking surface at the second end,
• the discharge electrode comprises a third locking surface at an upper end,
• the insulator connector comprises a fourth locking surface, and a fifth locking surface, and
• the insulator comprises a sixth locking surface,
• wherein:
• the first and the third locking surfaces are configured to form a fixed mutual engagement preventing translational and rotational movement of the discharge electrode in relation to the connector pin,
• the second and the fourth locking surfaces are configured to form a fixed mutual engagement preventing translational and rotational movement of the connector pin in relation to the insulator connector, and
• the fifth and the sixth locking surfaces are configured to form a fixed mutual engagement preventing translational and rotational movement of the insulator connector in relation to the insulator,
• so that when all the locking surfaces are in their respective mutual engagements, a longitudinal axis of the discharge electrode is aligned with the central axis of the pipe.