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公开(公告)号：US09599335B2
公开(公告)日：2017-03-21
申请号：US14421003
申请日：2013-08-09
Applicant: MITSUBISHI HITACHI POWER SYSTEMS, LTD.
Inventor： Toshihiko Mine , Kenji Kiyama , Miki Shimogori , Satoshi Tadakuma , Hitoshi Wakamatsu , Noriyuki Ohyatsu , Koji Kuramashi , Kenichi Ochi , Yusuke Ochi , Hirofumi Okazaki
CPC classification number: F23D1/00 , F23C7/006 , F23C7/008 , F23D2201/20 , F23K3/02 , F23K2203/008 , F23K2203/201
Abstract: A solid-fuel burner includes: a venturi having a constricting portion where the transverse cross section of a fuel passage is reduced in a fuel nozzle for supplying a solid fuel; and a fuel concentrator for diverting the flow in the nozzle outward in the wake side of the venturi, and the nozzle is formed so that (a) the aperture in the vicinity of an opening portion of a boiler furnace wall surface has a flat shape, (b) cross-sectional shape thereof orthogonal to a nozzle center axis C on the outer peripheral wall of the nozzle is circular in a transverse cross section up to the constricting portion of the venturi, (c) a portion that has a gradually increasing degree of flatness is provided between the constricting portion and the opening portion, and (d) the flat shape in the opening portion is where the degree of flatness reaches a maximum.
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公开(公告)号：US20150241058A1
公开(公告)日：2015-08-27
申请号：US14421003
申请日：2013-08-09
Applicant: MITSUBISHI HITACHI POWER SYSTEMS, LTD.
Inventor： Toshihiko Mine , Kenji Kiyama , Miki Shimogori , Satoshi Tadakuma , Hitoshi Wakamatsu , Noriyuki Ohyatsu , Koji Kuramashi , Kenichi Ochi , Yusuke Ochi , Hirofumi Okazaki
CPC classification number: F23D1/00 , F23C7/006 , F23C7/008 , F23D2201/20 , F23K3/02 , F23K2203/008 , F23K2203/201
Abstract: A solid-fuel burner includes: a venturi having a constricting portion where the transverse cross section of a fuel passage is reduced in a fuel nozzle for supplying a solid fuel; and a fuel concentrator for diverting the flow in the nozzle outward in the wake side of the venturi, and the nozzle is formed so that (a) the aperture in the vicinity of an opening portion of a boiler furnace wall surface has a flat shape, (b) cross-sectional shape thereof orthogonal to a nozzle center axis C on the outer peripheral wall of the nozzle is circular in a transverse cross section up to the constricting portion of the venturi, (c) a portion that has a gradually increasing degree of flatness is provided between the constricting portion and the opening portion, and (d) the flat shape in the opening portion is where the degree of flatness reaches a maximum.
Abstract translation: 固体燃料燃烧器包括：文丘里管，其具有收缩部分，在用于供应固体燃料的燃料喷嘴中燃料通道的横截面减小; 以及用于将喷嘴中的流向外转向文丘里管的尾流侧的燃料浓缩器，并且喷嘴形成为使得（a）锅炉炉壁表面的开口部附近的孔具有扁平形状， （b）与喷嘴的外周壁上的喷嘴中心轴线C正交的截面形状在文丘里管的收缩部分的横截面为圆形，（c）逐渐增加的部分 在收缩部和开口部之间设置有平坦度，（d）开口部的平坦形状是平坦度达到最大的程度。
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公开(公告)号：US10359193B2
公开(公告)日：2019-07-23
申请号：US14902961
申请日：2014-07-08
Applicant: MITSUBISHI HITACHI POWER SYSTEMS, LTD.
Inventor： Kenji Kiyama , Miki Shimogori , Toshihiko Mine , Satoshi Tadakuma , Kenichi Ochi , Koji Kuramashi , Yusuke Ochi , Akira Baba , Yuki Kondo
Abstract: In accordance with the flow distribution of combustion gas including an unburned portion, an after-air port (AAP) arranged downstream of the two-stage combustion burner can effectively reduce the unburned portion by dividing as appropriate so as to avoid interaction, and by mixing together, two types of after-air having functions of linearity and spreading. As the configuration of this AAP, a primary nozzle for supplying primary after-air and having a vertical height greater than the horizontal width is provided in the center in the opening of the AAP, a secondary nozzle for supplying secondary after-air is provided in the opening outside of the primary nozzle, and one or more secondary after-air guide vanes having a fixed or variable tilt angle relative to the after-air port center axis are provided at the outlet of the said secondary nozzle to deflect and supply the secondary after-air horizontally to the left or right.
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