JP2010539426A5 - - Google Patents

Claims (9)

A stepped combustion grate for an incineration or combustion plant, the plant comprising one or more grate compartments, the grate compartment being obliquely downward in the direction of fuel movement on the top of the grate A plurality of grate beams (1), the grate beam (1) having a grate top (2) stepped downward in the direction, and an outer surface (3 ) Are arranged in close proximity to each other across the width of the fuel grate, and the adjacent grate beams (1) are reciprocally movable in the longitudinal direction, and the grate beam (1) In a stepped combustion grate adapted to a possible closed loop passage of the heat transfer medium therethrough, wherein the heat transfer medium blockage (4) is one or more U-shaped bent plate elements (5) The side of the staircase grate top ( ) In response to being cut stepwise, characterized in that it is welded to the underside of the grate top (2), stepped fuel grate.   A first dividing plate (6) is further provided inside each heat transfer medium blocking portion (4), and the first dividing plate (6) includes a step corresponding to the grate top (2). Formed and positioned at a constant distance from the grate top (2) so as to provide a mainly constant cross-section for the flow of the heat transfer medium directly below the grate top (2) The step-like combustion grate according to claim 1.   A second dividing plate (7) for dividing the volume under the first dividing plate (6) inside the sealing part (4) into an inlet chamber (8) and an outlet chamber (9); The inlet and outlet chambers (8, 9) are arranged in the vicinity of the second dividing plate (7) for supplying a heat transfer medium to the sealing part (4) and discharging it from the sealing part (4). Stepwise combustion grate according to claim 2, characterized in that it comprises inlet and outlet connections (10, 11) positioned on both sides.   Each grate beam (1) comprises two sealing parts (4A, 4B), the sealing parts (4A, 4B) for the flow of the heat transfer medium passing through the sealing parts (4A, 4B) A stepped combustion grate according to any one of claims 1 to 3, characterized in that it is connected in series (12).   Each grate beam (1) is provided with a primary air opening (13) in the form of a series of longitudinally extending grooves (13), said primary air opening (13) being said blocking part (4A, 4B). ), In communication with the primary air space below the grate (1) and in the middle of the grate top (2A, 2B). 4. The step-like combustion grate according to 4.   The groove (13) is provided in the predominantly horizontally extending part of the grate top (2A, 2B), preferably over the entire length of the horizontally extending part. 5. The step-like combustion grate according to 5.   Each grate beam (1) is provided by two grate beam modules, said modules each having a grate top (2A, 2B) and a block (4A, 4B), in the form of a groove (13). Positioned relative to each other so as to provide the primary air opening (13), the primary vertical groove (13) is located at the top of the stepped grate top (2A, 2B). Step-like shape according to any of the preceding claims, characterized in that it is connected to one another by welding to ensure that it only opens into the predominantly horizontal surface of the grid top (2A, 2B). Burning grate.   The grate beam module is provided with two widths A and B, and a combination of A + A, A + B, and B + B provides three different width grate beams (1), respectively. Item 8. A stepped fuel grate according to Item 7.   Stepwise fuel grate according to any one of the preceding claims, characterized in that the blocking part (4) is constructed to provide a closed loop circulation of the heat transfer medium.