Adjustable cathode fixing device for high-voltage wet electrostatic precipitator

Abstract

The invention discloses an adjustable cathode fixing device for a high-voltage wet electrostatic precipitator. A cathode frame is provided with groove steel for a cathode fixing pile to be connected with the frame. A cathode girder is located above an anode pipe of the cathode frame and is fixed through two clamping flanges and clamping bolts. The cathode fixing pile is arranged between the cathode girder and the cathode frame and is installed in a connection channel between the cathode girder of an upper air chamber and the cathode frame of a lower air chamber. A cathode wire is laid in the anode pipe in the channel. An adjusting bolt is fixed to the bottom of the cathode fixing pile, a screw rod of the adjusting bolt penetrates through the groove steel and the cathode frame, and an adjusting nut matched with the adjusting bolt is arranged below the cathode frame. The adjustable cathode fixing device is suitable for treatment of exhaust gas of large power stations, exhaust gas of sintering machines, pellets, cement and chemical engineering of the iron and steel industry and a large amount of exhaust gas of the nonferrous metallurgy industry. Ultra-low emission improvement is carried out on existing power plants and steel mills and is of great significance in high efficiency and energy conservation advocated by the country and long-term safe, stable and standard operation of a system.

Description

technical field [0001] The invention relates to the technical field of smoke and dust treatment equipment, in particular to an adjustable cathode fixing device for a high-pressure wet electrostatic precipitator. Background technique [0002] At present, the domestic existing technology adopts two fixing methods for the cathode: [0003] One is that the negative girder of the upper air chamber is loaded by the insulators inside the insulation box outside the tower, and is suspended under the suspension rod in the sealed side pipe under the insulation box. The bypass of the gas to the clean flue gas causes a large amount of untreated dusty flue gas to escape. The cathode beam is laid on the cathode girder, and the cathode wire is fixed between the upper and lower beams. The thermal expansion of the cathode wire and the binding tension force The tightness is inconsistent, and the pole spacing is different after the slack deviation occurs, resulting in failure to operate at ful...

AI Technical Summary

Problems solved by technology

[0003] One is that the negative girder of the upper air chamber is loaded by the insulators inside the insulation box outside the tower, and is suspended under the suspension rod in the sealed side pipe under the insulation box. The bypass of the gas to the clean flue gas causes a large amount of untreated dusty flue gas to escape. The cathode beam is laid on the cathode girder, and the cathode wire is fixed between the upper and lower beams. The thermal expansion of the cathode wire and the binding tension force The tightness is inconsistent, and the pole spacing is different after the slack deviation occurs, resulting in failure to operate at full load or even flashover and disconnection accidents;

[0004] In particular, the lower cathodes of large-scale wet electrostatic precipitators connected in parallel with multiple electric fields have insulation failure, flashover, disconnection, low operating efficiency, and long-term safe and standard operation.

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