Sectorial sealplate and manufacturing method thereof

Abstract

The invention relates to a sectorial sealplate. The sectorial sealplate comprises a sectorial steel plate, a plurality of supporting and hanging devices arranged on the sectorial steel plate and a reinforcing rib; and each of the supporting and hanging devices comprises supporting and hanging angle steel, a nut arranged on the supporting and hanging angle steel and a bolt matched with the nut. The invention also relates to a manufacturing method of the sectorial sealplate, which comprises the following steps of: blanking to form a sectorial steel plate; welding the reinforcing rib and the supporting and hanging devices to the sectorial steel plate; removing welding stress by using vibration aging; and performing flatness correction by a mechanical correction method. The low-cost sectorial sealplate has a simple structure and the manufacturing method of the sectorial sealplate is simple, the using performance and the requirement of a rotary air pre-heater can be met, manufacturing cost is greatly reduced and raw materials are saved.

Description

technical field [0001] The invention relates to a fan-shaped sealing plate used for a rotary air preheater and a flue gas heater, and a manufacturing method of the fan-shaped sealing plate, belonging to the technical field of rotary heat exchanger equipment. Background technique [0002] Rotary air preheaters and flue gas heaters are the core components of boiler equipment in thermal power plants. Its main function is to absorb the waste heat flue gas discharged from the boiler, and use the waste heat flue gas to heat the air used for boiler combustion and pulverized coal transportation, or to reheat the flue gas cooled by the desulfurization system. The rotary air preheater and flue gas heater separate the air and flue gas during the heat exchange process through three-way seals (radial seal, axial seal and bypass seal), while the fan-shaped sealing plate is radial A major component in a sealing system. Such as figure 1 As shown, the traditional fan-shaped sealing plate ...

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Problems solved by technology

[0012] In summary, the traditional fan-shaped sealing plate in the current prior art is in the manufacturing process: 1. It needs a large-scale annealing furnace of 3000mm×2000mm×10000mm for annealing heat treatment; 2. It needs a large-scale 3000mm×10000mm plane processing equipment to Process and correct the flatness of the fan-shaped sealing plate; 3. A fan-shaped sealing plate weighs about 8 tons, and a rotary air preheater needs 6 fan-shaped sealing plates weighing 48 tons, accounting for the total 5-6% of the weight; thus causing the high production cost of the fan-shaped sealing plate

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