{"id":1492,"date":"2015-05-19T19:28:12","date_gmt":"2015-05-19T23:28:12","guid":{"rendered":"https:\/\/www.mdaturbines.com\/?p=1492"},"modified":"2025-11-05T16:16:15","modified_gmt":"2025-11-05T21:16:15","slug":"advanced-sealing-system","status":"publish","type":"post","link":"https:\/\/www.mdaturbines.com\/resources\/advanced-sealing-system\/","title":{"rendered":"Steam Turbine Advanced Sealing System"},"content":{"rendered":"<p><a href=\"https:\/\/www.mdaturbines.com\/parts\/steam-turbine\/\">MD&amp;A Parts Division&#8217;s<\/a> Advanced Sealing system for steam turbines consists of the <a href=\"https:\/\/www.mdaturbines.com\/parts\/turbine-packing-seals\/guardian-packing\/\">Patented Guardian\u00ae<\/a> &amp; <a href=\"https:\/\/www.mdaturbines.com\/parts\/turbine-packing-seals\/vortex-shedder-spill-strips\/\"> Vortex Shedder\u00ae Sealing<\/a> Technology which improves steam turbine efficiency above design!<\/p>\n<p><strong>View our new 3D video below and then call MD&amp;A Parts Division for your next Advanced Sealing System at <\/strong><strong>(518) 885-3199 or use our <a href=\"https:\/\/www.mdaturbines.com\/contact\/\">Contact form<\/a>.<\/strong><\/p>\n<div class=\"embed-container\"><iframe loading=\"lazy\" title=\"Steam Turbine Advanced Sealing System\" width=\"1400\" height=\"788\" src=\"https:\/\/www.youtube.com\/embed\/j2FS8I80mSo?feature=oembed\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" referrerpolicy=\"strict-origin-when-cross-origin\" allowfullscreen><\/iframe><\/div>\n<p>In an impulse steam path design, conventional seals &amp; shaft-packing attribute to leakages up to 29% loss of stage efficiency.<\/p>\n<p>Guardian Packing rings can be installed in the HP, IP, and LP turbine sections along with all gland seal areas in any steam turbine.<\/p>\n<p>Unlike other packing designs, Guardian Packing rings maintain a positive radial seal during start-up, shutdown, turning gear, and unit operation. Positive radial sealing is a fundamental component to maintaining unit efficiency.<\/p>\n<p>Guardian posts, used to maintain the integrity of the packing teeth, are constructed of a patented, non-galling, low coefficient of friction material.<\/p>\n<p>The Guardian posts are set with a radial clearance 5 mils less than the conventional teeth. Should a rub occur, the Guardian strips would contact the rotor first preventing damage to the knife-edged teeth, and thus maintaining the efficiency of the seal.<\/p>\n<p>Conventional teeth can become dull over time due to unit operation and transient events such as rubs during start-up, therefore, leading to unit inefficiency and additional steam leakage.<\/p>\n<p>In addition to packing, Steam leakage occurs at the tip seals over the buckets.<\/p>\n<p>Whether the steam path design is impulse, reaction, or a combination of both, our stainless steel Vortex Shedder Tip Seals work by creating vortices at the admission side of the seal.<\/p>\n<p>The Vortex Shedder also operates on a reaction steam path design where you can apply it to the rotating seal strip and the stationary seal strip.<\/p>\n<p>These vortices reduce the pressure drop, resulting in lower flow and less leakage across the seal. This translates to improved stage heat rate performance for the steam turbine.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>MD&amp;A Parts Division&#8217;s Advanced Sealing system for steam turbines consists of the Patented Guardian\u00ae &amp; Vortex Shedder\u00ae Sealing Technology which improves steam turbine efficiency above&#8230;<\/p>\n","protected":false},"author":2,"featured_media":74780,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"content-type":"","footnotes":""},"categories":[211,209,25],"tags":[181,77,87],"class_list":["post-1492","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-parts","category-steam-turbine","category-videos","tag-advanced-sealing-system","tag-steam-turbine","tag-video"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.9 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Advanced Sealing System - 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