42results about How to "Avoid destructive phenomena" patented technology

An electric heating exhaust gas treatment device with a double-layer casing structure is arranged in the exhaust system of an internal combustion engine, and includes an inner layer casing, an outer layer casing and a metal catalyst carrier. The inner layer casing is provided with a metal catalyst carrier, and at least one The heating honeycomb element is located in the inner sleeve and arranged above the metal catalyst carrier. There is an insulating gap between the heating honeycomb element and the metal catalyst carrier. The upper end of the inner sleeve is located on the inner side of the outer sleeve and a The annular U-shaped processing groove separates the upper end of the inner casing into a circular arc, one end of the heating honeycomb element is electrically connected to the circular arc, and a conductive element is electrically connected to the circular arc after penetrating through the outer sleeve. The outer wall of the arc ring; thus, the present invention can effectively reduce or avoid the adverse effects of accelerated oxidation and corrosion in the contact area between the end of the electric conductor and the honeycomb core body, and especially avoid the high torque generated during the actual assembly process so that Damage caused by electrically sensitive parts.

The present invention relates to a supporting and protecting structure for an underground laneway in hanging and assembling way. the supporting and protecting structure is characterized in that a plurality of supporting and protecting plates are assembled into a supporting and protecting layer; each supporting and protecting plate is hung over the wall rock by a roof bolt; a flexible gap is kept between two adjacent plates; the width of the flexible gap is determined by the size of the laneway; the bigger the laneway deforms, the wider the flexible gap is; a flexible sealing strip is pressed into the flexible gap; the present invention has the beneficial effects that every supporting and protecting plate is hung by the roof bolt, which takes fully advantages of the supporting and protecting of the roof bolt that the wall rock is fixed together by the roof bolt and the supporting and protecting plates are hung over the wall rock by the roof bolt, thereby playing in a hanging role; the plate structure is constructed easier than the one-whole structure; the flexible gap is kept between two adjacent plates, and during the deforming of the wall rock, the gaps between the plates are contracted to release a part of the ground pressure, which changes the rigid supporting and protecting into the flexible supporting and protecting, thereby conforming to the modern flexible supporting and protecting principle; due to the release of the ground pressure, the supporting and protecting pressure is reduced, thereby avoiding the damage of the supporting and protecting layer.