空预器密封器的有排污槽的空腔铰轴制造技术
Cavity hinge shaft with drain tank for air preheater sealing device
The utility model relates to a cavity joint axle with a discharge tank for an air preheater sealing device, belonging to the technical field of thermal power generation. The two axis shoulder 1 between the center shaft stem 3, the shaft head 1 at the two ends and the shaft stem 3 shaft head 2. Long axis cavity 5 hinge axis. The shaft dry 3 is a cylinder, and half of the half barrel is cut, so that the axle cavity 5 is opened outwards. Two spindle head 1 radial drain tank 4. Each of the two shaft shoulders 2 is provided with a limit table 6, and the limit position of the sealing plate hinged on the hinge shaft can be limited. The hinge shaft welding has a connecting seat mounted on the rotor of the air preheater 7. The two shaft head is provided with 1 outer shaft seats, and the shaft seat is provided with a sealing plate. The hinge shaft connects the connecting seat 7 and the shaft seat and the sealing plate to form a sealing device. Dust sealing device consists of a shaft echo around the stem 3 open diameter shaft cavity 5, discharged from the 1 shaft ends, the avoidance of dust; the dust and dirt into the bearing gap time can be bonded, sewage tank 4 scraping and discharged from the 1 shaft ends. Air preheater for thermal power generation.
【技术实现步骤摘要】
空预器密封器的有排污槽的空腔铰轴
火力发电。
技术介绍
火电站的空气预热器，业内简称“空预器”，是一种利用燃料燃烧排出的甚高温烟气，预热参与燃烧的空气，以此提高锅炉的热效率。现行回转式空预器，把烟气侧与空气侧隔开的垂板式密封器，密封是靠一块顶边用柱铰型铰轴固定的密封板，运行过程中垂板绕摆轴被动起伏。因为垂板工作在高温高尘高蚀的环境，积尘结垢严重，摆动阻滞；甚至抬起不落，密封失效。
技术实现思路
空预器密封器的有排污槽的空腔铰轴要解决的技术问题是：空预器的密封器能及时排除积尘，防止结垢。采用的技术方案是：密封器的铰轴心部为空腔，轴头有径向排污槽。空预器密封器的有排污槽的空腔铰轴(图1)由居中的轴干3、两端的轴头1和轴干3轴头1之间的两轴肩2构成。铰轴通长有轴腔5。轴干3为圆筒切掉一半的半筒，使轴腔5对外敞开。两轴头1有径向排污槽4。两轴肩2上各有一个限位台6，可限定铰连在铰轴上的密封板上摆极限位置。铰轴焊有往空预器转子上安装的连座7.两轴头1外套轴座，轴座上装有密封板。铰轴把连座7和轴座、密封板连接在一起构成一个密封器。空预器密封器的有排污槽的空腔铰轴的有益效果是：密封器周围的烟尘埃，可由轴干3的敞开口经轴腔5，从轴头1两端排出，免生积尘；进入轴承间隙内的尘埃以及日久粘结的尘垢，可被排污槽4刮除并从轴头1两端排出。附图说明图1是空预器密封器的有排污槽的空腔铰轴结构立体示意图。图中：1-轴头；2-轴肩；3-轴干；4-排污槽；5-轴腔；6-限位台；7-连座。具体实施方式实现本申请的优选方式，对照图1详述如下：铰轴全长350mm，轴肩2、轴干3段外径38mm。轴腔5内...
【技术保护点】
空预器密封器的有排污槽的空腔铰轴，密封器的铰轴心部为空腔，轴头有径向排污槽，其特征是：由居中的轴干(3)、两端的轴头(1)和轴干(3)轴头(1)之间的两轴肩(2)构成；铰轴通长有轴腔(5)；轴干(3)为圆筒切掉一半的半筒，使轴腔(5)对外敞开；两轴头(1)有径向排污槽(4)；两轴肩(2)上各有一个限位台(6)。
【技术特征摘要】
1.空预器密封器的有排污槽的空腔铰轴，密封器的铰轴心部为空腔，轴头有径向排污槽，其特征是：由居中的轴干(3)、两端的轴头(1)和轴干(3)轴头(1)之间的两轴肩(2)构成；铰轴通长有轴腔(5)；轴干(3)为圆筒切掉一半的半筒，使轴腔(5)对外敞开；两轴头(1)有径向排污槽(4)；两轴肩(2)上各有一个限位台(6)。2.根据权利要求1...
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