Accessory furnace chamber extending section applied to single crystal furnace

Abstract

The invention relates to the field of single crystal furnace auxiliary equipment, in particular to an accessory furnace chamber extending section applied to a single crystal furnace. The accessory furnace chamber extending section comprises an extending section body, an extending section upper flange, an extending section lower flange, an extending section side flange, a connecting assembly and awaterproof assembly, wherein the extending section body is of a double-layer cylindrical structure and comprises a cylindrical extending section inner cylinder and a cylindrical extending section outer cylinder; the extending section upper flange and the extending section lower flange are arranged at the top end and the bottom end of the extending section body correspondingly in a welded mode; theextending section side flange is arranged on the side part of the extending section outer body through the connecting assembly; the connecting assembly is of a double-layer pipe structure and comprises an extending section side flange inner connecting pipe and an extending section side flange outer connecting pipe; and the waterproof assembly comprises a plurality of extending section waterproofstrips; and the extending section waterproof strips are each of an arc-shaped structure, are parallel to the bottom face of the extending section body and are arranged between the extending section inner cylinder and the extending section outer cylinder in a welded mode. The sealing property of the accessory furnace chamber extending section is improved; and the cooling efficiency is improved, thus the single production weight and length of silicon rods of the single crystal furnace are increased, and the replacing frequency of auxiliary materials is reduced.

Description

technical field [0001] The invention relates to the field of auxiliary equipment for a single crystal furnace, in particular to an extension section of an auxiliary furnace chamber applied to a single crystal furnace. Background technique [0002] Monocrystalline silicon is an important material for solar photovoltaic power generation. Consumables are indispensable in the production of monocrystalline silicon, such as water, electricity, gas, quartz crucible, etc. After each crystal pulling is completed, the furnace needs to be cooled and cleaned to replace the necessary consumables. The crystal pulling needs to be heated from room temperature again. The second stage not only wastes material resources, but also wastes time. With the improvement of the quality of consumables, it can be capable of pulling crystals multiple times. Therefore, the research and development of re-feeding is an imperative project and a key factor to improve the efficiency of the entire production ch...

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