CN201159091Y - 迎汽式蜂窝密封 - Google Patents

迎汽式蜂窝密封 Download PDF

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Publication number
CN201159091Y
CN201159091Y CNU2007201786873U CN200720178687U CN201159091Y CN 201159091 Y CN201159091 Y CN 201159091Y CN U2007201786873 U CNU2007201786873 U CN U2007201786873U CN 200720178687 U CN200720178687 U CN 200720178687U CN 201159091 Y CN201159091 Y CN 201159091Y
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China
Prior art keywords
steam
honeycomb
cellular band
seal
facing
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Expired - Fee Related
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CNU2007201786873U
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English (en)
Inventor
蒋瑞华
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DANDI POWER TECHNOLOGICAL Co Ltd SHANGHAI
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Individual
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Abstract

本专利公开了一种迎汽式蜂窝密封。它应用于汽轮机组的汽封系统，旨在增加阻汽效果，提高汽轮机组的级效率。它改进了现有技术——新型汽轮机组级间密封及轴封装置(专利号：ZL99254365.7)的结构，保留了一部分蜂窝带。同时，在汽封齿的迎汽面钎焊一圈蜂窝带，且令其蜂窝孔的正六面体母线与其轴线、亦即转子轴线平行。此种结构旨在将其安装于汽轮机时，直接阻挡汽流，进一步增加阻汽效果。

Description

迎汽式蜂窝密封
技术领域
本专利所属的的技术领域为火力发电行业汽轮机组的蒸汽密封系统。
背景技术
本发明是在已有实用新型专利——新型汽轮机组级间密封及轴封装置(专利号：ZL99254365.7)基础上的创新。
发明内容
本专利所要解决的问题是提高蜂窝式密封的封严效果。第一，本发明所用的蜂窝带是由大量几何尺寸相同的蜂窝孔规则排列而成，如图1所示，每个蜂窝孔都是正六面体芯格。蜂窝孔的正六面体芯格由厚度为0.05至0.10mm耐高温合金箔制成。第二，如图2所示，在汽封环1的汽封齿2的迎汽面3之根部钎焊一圈蜂窝带4，该蜂窝带钎焊于汽封齿2上，且令该蜂窝带蜂窝芯格的母线与转子6的轴线平行。第三，汽封环1剩余的内表面钎焊蜂窝带5，蜂窝带5的蜂窝芯格母线垂直于转子6的轴线。第四，蜂窝带4与蜂窝带5之间保持间隙D，2≤D≤8。第五，图2表示了钎焊成型的迎汽式蜂窝密封与汽轮机转子6的装配关系。第六，这种结构的有益效果：利用蜂窝带4的直接阻汽作用，进一步增强阻汽功能，提高汽轮机组的级效率。
说明书附图
图1即为蜂窝带图。
图2即为蜂窝带钎焊于汽封环的效果图。
具体实施方式
蜂窝带4、蜂窝带5是用厚度为0.05至0.10mm耐高温合金箔经特殊工艺成型，再通过激光焊接成连续的蜂窝芯格。蜂窝芯格均为几何尺寸一致的正六面体。蜂窝带4钎焊于汽封环1的汽封齿2的迎汽面3之根部，且令该蜂窝带钎焊于汽封齿2上，使其蜂窝芯格的母线与转子6轴线平行。汽封环1内表面的剩余部分再沿圆周方向钎焊蜂窝带5，蜂窝带5的蜂窝芯格母线垂直于转子6轴线。蜂窝带4与蜂窝带5之间保持间隙D，且2≤D≤8。

Claims (3)

1.本专利为一种迎汽式蜂窝密封，其特征是，将蜂窝带(4)钎焊于汽封环(1)的汽封齿(2)的迎汽面(3)之根部，且令该蜂窝带钎焊于汽封齿(2)上，使其蜂窝芯格的母线与转子(6)轴线平行，汽封环(1)内表面的剩余部分再沿圆周方向钎焊蜂窝带(5)，蜂窝带(4)与蜂窝带(5)之间保持一定间隙。
2.权利要求1所述的迎汽式蜂窝密封，其中汽封环(1)内表面的剩余部分再沿圆周方向钎焊蜂窝带(5)，其特征是，蜂窝带(5)的蜂窝芯格母线垂直于转子(6)的轴线。
3.权利要求1所述的迎汽式蜂窝密封，其中蜂窝带(4)与蜂窝带(5)之间保持一定间隙，其特征是，该间隙值为D，且2≤D≤8。
CNU2007201786873U 2007-09-19 2007-09-19 迎汽式蜂窝密封 Expired - Fee Related CN201159091Y (zh)

Priority Applications (1)

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CNU2007201786873U CN201159091Y (zh) 2007-09-19 2007-09-19 迎汽式蜂窝密封

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CNU2007201786873U CN201159091Y (zh) 2007-09-19 2007-09-19 迎汽式蜂窝密封

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CN201159091Y true CN201159091Y (zh) 2008-12-03

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106089322A (zh) * 2016-08-10 2016-11-09 西安西热节能技术有限公司 一种磁弹簧布莱登汽封
CN106437873A (zh) * 2016-10-18 2017-02-22 东方电气集团东方汽轮机有限公司 一种拂配式汽封装置

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106089322A (zh) * 2016-08-10 2016-11-09 西安西热节能技术有限公司 一种磁弹簧布莱登汽封
CN106437873A (zh) * 2016-10-18 2017-02-22 东方电气集团东方汽轮机有限公司 一种拂配式汽封装置

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