Method for avoiding failure of bolt connection assembly under high temperature and adopted unloading mechanism

• Main Authors: LEI HENGZHANG, LI WENJIANG, WANG JIANXING, ZOU ZHIYONG, LI KUIWU, LIU TIANHUA
• Format: Patent
• Language: Chinese; English
• Published: 01.12.2010
• Subjects: BLASTING; DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS ORMACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS,CLIPS, WEDGES, JOINTS OR JOINTING; ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS; HEATING; LIGHTING; MECHANICAL ENGINEERING; THERMAL INSULATION IN GENERAL; WEAPONS

The invention discloses a method for avoiding the failure of a bolt connection assembly under high temperature and an adopted unloading mechanism, mainly applied to a polycrystalline ingot furnace heater used in the solar energy field. The method for avoiding the failure of the bolt connection assembly under high temperature adopts the technical scheme that at least one group of stress unloading device is arranged between a connected piece and the bolt connection assembly, the stress unloading device comprises a bowl-shaped gasket and a flat gasket arranged at the opening side of the bowl-shaped gasket, a gap is formed between the bowl-shaped gasket and the flat gasket, and a chock block with the diameter smaller than the opening diameter of the bowl-shaped gasket is arranged at the outer side of the flat gasket. By utilizing the stress unloading device, the invention favorably solves the problem of easy failure of the connected threads under high temperature, greatly prolongs the service life of the bolt, an