The invention belongs to the field of utility boilers and steam turbine systems, and specifically relates to a mechanical and hydraulic double-effect backwashing secondary filter. The inlet pipe is connected with the mesh core, and the mesh core is provided with a filter shell outside. The filter shell is connected with an outlet pipe. The diameter of the inlet pipe is equal to the diameter of the mesh core, and the two centerlines coincide; the inlet pipe is provided with a bearing seat support. The middle point of the support frame of the bearing base is provided with a central bearing seat, and the central line of the mesh core is provided with a pipe shaft. One end of the pipe shaft is connected with the actuator located on the end face of the filter shell, and the other end is connected with the central bearing seat. There is a sewage pipe in the mesh core, the central line of the sewage pipe coincides with the central line of the mesh core, and the sewage pipe extends to the intake pipe. There are elbows in the pipe, elbows extend out into the water pipe, sewage buckets are arranged at the midpoint of the pipe shaft, and pollution cleaning steel brushes are arranged at the end of the sewage bucket, and the pollution cleaning steel brushes are in contact with the mesh core. The invention effectively improves the cleaning effect by using negative pressure cleaning and mechanical cleaning. The device has simple and reasonable structure, stable and reliable operation and remarkable cleaning effect.
【技术实现步骤摘要】
一种机械水力双效反洗二次滤网
本专利技术属于电站锅炉及汽轮机系统领域,具体涉及一种机械水力双效反洗二次滤网。
技术介绍
随着燃煤发电厂容量的日趋大型化,及节能减排技术的深入推广执行,挖掘汽轮机冷端系统的节能潜力越来越得到重视。常规凝汽式汽轮机以电厂循环水作为冷却水源,电厂循环水清洁程度较差,长期运行后凝汽器管束内结垢情况加剧,导致传热性能下降,汽轮机汽耗增加。同时循环水中携带各种杂物,特别是海水冷却机组,海生物会造成凝汽器堵塞。另外水生物会在凝汽器内附着生长,堵塞凝汽器冷却管,会造成凝汽器循环水流量下降,影响凝汽器换热效率。二次滤网的主要作用是将凝汽器循环水中的杂物清理干净,必须能够拦截杂物并清除杂物,保证循环水流量不下降。现今主要采用负压反冲洗原理二次滤网,但是对卡在或附着在二次滤网网面杂物清理效果很差。
技术实现思路
为克服上述现有技术的缺点,提供一种机械水力双效反洗二次滤网。为达到上述目的,本专利技术采用以下技术方案予以实现:一种机械水力双效反洗二次滤网,包括进水管,进水管与网芯相连接,网芯外设有滤网外壳,滤网外壳端面设有与网芯相连通的出水管;网芯内旋设有管轴,管轴一端与设于滤网外壳端面的执行机相连接,另一端与排污管相连通;管轴上设有排污斗,排污斗的端面设有清污钢刷,清污钢刷与网芯内表面相接触。本专利技术进一步的改进在于:管轴通过中心轴承座与排污管相连通,中心轴承座设于进水管内的轴承座支撑架上。排污斗设于管轴轴向的中点处。进水管内径与网芯直径相等,两者中心线重合。排污管为弯头状,弯头伸出进水管。弯头中心线与网芯中心线重合。清污钢刷的长度与网芯的长度相等。 ...
【技术保护点】
1.一种机械水力双效反洗二次滤网,其特征在于,包括进水管(1),进水管(1)与网芯(3)相连接,网芯(3)外设有滤网外壳(2),滤网外壳(2)端面设有与网芯(3)相连通的出水管(8);网芯(3)内旋设有管轴(4),管轴(4)一端与设于滤网外壳(2)端面的执行机(5)相连接,另一端与排污管(11)相连通;管轴(4)上设有排污斗(6),排污斗(6)的端面设有清污钢刷(7),清污钢刷(7)与网芯(3)内表面相接触。
【技术特征摘要】
1.一种机械水力双效反洗二次滤网,其特征在于,包括进水管(1),进水管(1)与网芯(3)相连接,网芯(3)外设有滤网外壳(2),滤网外壳(2)端面设有与网芯(3)相连通的出水管(8);网芯(3)内旋设有管轴(4),管轴(4)一端与设于滤网外壳(2)端面的执行机(5)相连接,另一端与排污管(11)相连通;管轴(4)上设有排污斗(6),排污斗(6)的端面设有清污钢刷(7),清污钢刷(7)与网芯(3)内表面相接触。2.根据权利要求1所述的机械水力双效反洗二次滤网,其特征在于,管轴(4)通过中心轴承座(10)与排污管(11)相连通,中心轴承座(10)设于进水管(1)内的轴承座支撑架(9)上。3.根据权利要求1所述的机械水力双效反洗二次滤网,其特征在于,排污斗(6)设于管轴(4)...
【专利技术属性】
技术研发人员:李永康,万超,王耀文,李高潮,于龙文,屈杰,
申请(专利权)人:西安西热节能技术有限公司,西安热工研究院有限公司,
类型:发明
国别省市:陕西,61
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