Plasma Generator DLZ-DA-300 of Plasma Ignition System
Plasma Generator is the core equipment of plasma ignition and combustion stabilization system. Plasma arc from generator DLZ-DA-300 is stabilized by secondary swirl air. Its working principle is: after setting the value of the output current of the power supply system, the cathode 2 moves forward to contact with the anode 1, and the output current gradually increases to the set value and remains constant. Then, the cathode slowly leaves the anode, forming an arc between the cathode and anode. And then carrier medium passes through the arc, it is ionized into a plasma, and its jet is ejected from the anode outlet, forming a flame with a core temperature of about 5000K.
1.Anode 2.Cathode 3.Power Supply
Anode bearing assembly: It is the Platform of installation for other parts,like anode, cathode, arc striking mechanism.Besides, it can introduce and distribute the cooling water and medium air with corresponding connections on it.
Transition anode assembly:When the generator is started, the cathode contacts with the arc striking cone of the transition anode, and then the cathode is pulled back to establish the arc. Driven by the primary carrier air, the arc passes through the compressed structure of the transition anode chamber and the root reaches the front of the main anode wall.
Transition anode assembly
Main anode: After the arc pass through transition anode and further compressed by the secondary carrier air at the nozzle , the arc root of the anode falls on the inner wall of the main anode, and the plasma jet is ejected from its nozzle to form a flame. The main anode will be damaged due to high temperature ablation during operation until it is burnt out. It needs to be checked and replaced regularly.
Cathode conduit: As shown in Figure3.6, the cathode conduit is mainly composed of cathode head, body, cathode seat. During operation, the cathode head is damaged by high-temperature radiation heat and positive ion bombardment, and needs to be replaced regularly.
Arc striking mechanism: It includes a motor, a pull-push rod and a hook. The rod drives the cathode conduit forward through the hook and contacts with the anode. After the arc striking current is established and stabilized, pull the cathode backward to complete the generator startup.
Arc striking mechanism