Blade descaling method for blast furnace gas remaining pressure power generation turbine

Abstract

A vane scale removal method for blast gas overpressure power turbine belongs to mechanical scale removal technical field; the technical field of mechanical; the scale removal steps comprise: providing interplant purification cycle water for the steel factory; the pressure of the clean circulating water is 0.5MPa-0.8MPa for cooling the TRT generator and the lubricating system; the contact is opened at the clean circulating water pipeline surround the turbine; the stainless manual ball valve with diameter DN 20mm is installed, and seamless steel tube with diameter DN 20 is laid; the pipeline isled to the outlet of the turbine and entered into inside of the unit through the opening pipeline of the turbine; rear end of the high presser water pipe is flattened to produce nozzle to adhere to 5-8 mm the surface of the secondary dynamic leaf; the unit runs for 2-2.5 months or when the bearing vibration value of the turbine increases, the rotate speed of the unit is reduced to the rotate speed of the jigger; the water door is opened to spray wash the vane or recover to start the machine after the pipeline leaks at the lowest position. The advantages of the invention is that it solves the problem of stopping the machine of the unit, reduces the time of stopping the unit, improves generated energy and reduces the maintenance operation cost.

Description

technical field [0001] The invention belongs to the technical field of mechanical descaling, and in particular provides a blade descaling method for blast furnace gas residual pressure power generation turbines, which is suitable for blades on blast furnace gas residual pressure power generation turbines using dry dust removal technology Descale. Background technique [0002] At present, iron-making blast furnace gas dry dedusting method is more and more widely used. In the dry dedusting mode, the turbine blades of blast furnace gas residual pressure power generation (hereinafter referred to as TRT) generally have serious fouling phenomenon. Scaling on the blades causes the rotor to be unbalanced. After the TRT vibration exceeds the standard, the scales on the blades must be removed before the machine can be started. At present, the conventional descaling method is to remove the cylinder of the turbine, and clean the rotor with a high-pressure water gun after it is taken ou...

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Problems solved by technology

[0003] The purpose of the present invention is to provide a blade descaling method for the blast furnace gas residual pressure power generation turbine, which solves the problem that the rotor blades of the TRT turbine rotor are seriously fouled and causes the unit to shut down under the dry dust removal method, and in order to reduce the Unit downtime, increased power generation, and reduced maintenance and operating costs played a decisive role

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