| Along with the development of economics and the improvement of people's living, the apex and paddle difference of the electrical net has become bigger and bigger, and the runtime of firepower generator unit in part-load operation, is also rise. Generally we need to send oil for combustion-supporting in order to maintain a stabilization burning. But to save the precious oil sources, it is necessary to use none-oil ignition technologies. Plasma ignition technology is the most promising technology. But because of the plasma's super high temperature, exceeding the melting point of most commonly metal and alloy greatly, the life problem of zincous should be regard as a great problem.The purpose of this paper is to find the proper character of cooling water and the ways of it pass in and out the jet, which make sure that the anode of plasma ignition jet will not be ruined, to prolong the useful life of the pole, by using the numerical analyze in plasma ignition torch against heat transfer of anode and cooling-water against convection current heat transfer, and process the simulation calculation by using FLUENT soft.The quantity of heat transfer from plasma ignition jet to anodic mainly depends on inter water-cooling system. Perfect water cooling system should be the one that can take away the heat, generating from the hole of plasma flow, entirely as soon as possible, and prevent cooling "dead water area" coming out in the system, meantime ensure that cooling water will not boil away entirely. So it is significance to investigate the cooling water flow field in the cooling channels of plasma anode. In this problem, with the fast development of computer and numerical calculate technology, it is possible to simulate plasma anode cooling system. In this paper, the investigation in this area is discussed. The flow field configuration simulation analysis of anode cooling system is developed, and by analyzing and discussing flow-temperature coupling to find a cooling mode with the best cooling effect.In this paper, two parts were used to simulate the flow and temperature field of plasma anode cooling system, to find a cooling mode with the best cooling effect. One part is by using FLUENT soft to simulate and analyze the flow and temperature field of none-limited flow anode cooling system. For none-limited flow anode cooling system, cooling water flows pass in and out in the same side, in the different side, flows pass in the top and out the side, in and out the top, the flow and temperature field of these four modes of cooling water pass in and out were simulated. It is found by analyzing anode cooling surface temperature field thatwhen cooling water flows pass in the top and out the side, the inlet velocity of flow is 18 m I s, the length of anode is 500 mm, and the system has the best cooling effect. Another part is also by using FLUENT soft to simulate and analyze the flow and temperature field of limited flow anode cooling system. The method is to add a baffle in the cooling channel, which is apeak the X-Z surface, located in the half of the anode surface and the clearance against the out side is 2 mm. It is found by analyzing that when choosing plasma ignition jet with the anode length 600mm, the inlet velocity of flow is 10mis, either the anode surface temperature or the outlet cooling water none-boiling away or no dead-water area aspect is all the best.It can be summed up from the analyzed result that takes away the heat from plasma to anode by using cooling water, either adopting none-limited or limited cooling water pass in and out mode, can achieve the best cooling effect...
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