{"id":2701,"date":"2024-12-09T13:36:46","date_gmt":"2024-12-09T12:36:46","guid":{"rendered":"https:\/\/jureknawrocki.com\/?p=2701"},"modified":"2026-02-24T12:07:52","modified_gmt":"2026-02-24T11:07:52","slug":"przekroczenia-na-kroccach-jak-sobie-radzic","status":"publish","type":"post","link":"https:\/\/jureknawrocki.com\/en\/przekroczenia-na-kroccach-jak-sobie-radzic\/","title":{"rendered":"Nozzles loads \u2013 how to deal with them."},"content":{"rendered":"<p>The bottleneck in the calculations is the strength of the nozzles. I have a few observations on how to deal with this. <\/p>\n\n\n\n<p>The first rule is to increase the flexibility of the pipeline system by not blocking axial and lateral movement. In this case, there will always be a reaction force on the nozzle according to Newton's third law of dynamics. <\/p>\n\n\n\n<p>The second rule, which is also related to Newton's Third Law, is to use low friction supports near the nozzles. Using a Teflon washer under the triunion will reduce the friction force three-fold and consequently the torque on the nozzle three-fold. The moment arm remains constant. Such applications have Lisega. <a href=\"https:\/\/www.lisega.de\/en\/downloads-en\/catalog\/lisega-standard-supports-2020-en\/\">Lisega <\/a>for example  <\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"224\" height=\"233\" src=\"https:\/\/jureknawrocki.com\/wp-content\/uploads\/Ropa-3.jpg\" alt=\"\" class=\"wp-image-2704\" style=\"width:282px;height:auto\" srcset=\"https:\/\/jureknawrocki.com\/wp-content\/uploads\/Ropa-3.jpg 224w, https:\/\/jureknawrocki.com\/wp-content\/uploads\/Ropa-3-12x12.jpg 12w\" sizes=\"(max-width: 224px) 100vw, 224px\" \/><\/figure>\n\n\n\n<p>The third rule is to carefully model the triunions on the elbow. This is especially important for large diameters. <\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"595\" height=\"660\" src=\"https:\/\/jureknawrocki.com\/wp-content\/uploads\/Ropa-2.jpg\" alt=\"\" class=\"wp-image-2703\" style=\"width:395px;height:auto\" srcset=\"https:\/\/jureknawrocki.com\/wp-content\/uploads\/Ropa-2.jpg 595w, https:\/\/jureknawrocki.com\/wp-content\/uploads\/Ropa-2-480x532.jpg 480w\" sizes=\"(min-width: 0px) and (max-width: 480px) 480px, (min-width: 481px) 595px, 100vw\" \/><\/figure>\n\n\n\n<p>The fourth rule is to use springs at the top of vertical sections, especially when media temperatures are significant. <\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"296\" height=\"624\" src=\"https:\/\/jureknawrocki.com\/wp-content\/uploads\/Ropa-4.jpg\" alt=\"\" class=\"wp-image-2705\" srcset=\"https:\/\/jureknawrocki.com\/wp-content\/uploads\/Ropa-4.jpg 296w, https:\/\/jureknawrocki.com\/wp-content\/uploads\/Ropa-4-142x300.jpg 142w, https:\/\/jureknawrocki.com\/wp-content\/uploads\/Ropa-4-6x12.jpg 6w\" sizes=\"(max-width: 296px) 100vw, 296px\" \/><\/figure>\n\n\n\n<p> <\/p>","protected":false},"excerpt":{"rendered":"<p>W\u0105skim gard\u0142em w obliczeniach jest wytrzyma\u0142o\u015b\u0107 kr\u00f3\u0107c\u00f3w. Mam kilka obserwacji jak sobie z tym radzi\u0107. Pierwsza zasada to zwi\u0119kszenie elastyczno\u015bci systemu ruroci\u0105gowego przez nie blokowanie przesuwu osiowego i bocznego. W takim przypadku zawsze pojawi si\u0119 na kr\u00f3\u0107cu si\u0142a reakcji zgodnie z III zasad\u0105 dynamiki Newtona. Druga zasada maj\u0105ca tak\u017ce zwi\u0105zek z III zasad\u0105 Newtona, jest [&hellip;]<\/p>\n","protected":false},"author":3,"featured_media":2702,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_et_pb_use_builder":"off","_et_pb_old_content":"","_et_gb_content_width":"","footnotes":""},"categories":[123,15],"tags":[16],"class_list":["post-2701","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-obliczenia-wytrzymalosciowe-rur-i-aparatow","category-projekty","tag-naprezenia"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.6 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Przekroczenia na kr\u00f3\u0107cach - jak sobie radzi\u0107. - Jerzy Nawrocki<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/jureknawrocki.com\/en\/przekroczenia-na-kroccach-jak-sobie-radzic\/\" \/>\n<meta property=\"og:locale\" content=\"en_GB\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Przekroczenia na kr\u00f3\u0107cach - jak sobie radzi\u0107. - Jerzy Nawrocki\" \/>\n<meta property=\"og:description\" content=\"W\u0105skim gard\u0142em w obliczeniach jest wytrzyma\u0142o\u015b\u0107 kr\u00f3\u0107c\u00f3w. Mam kilka obserwacji jak sobie z tym radzi\u0107. Pierwsza zasada to zwi\u0119kszenie elastyczno\u015bci systemu ruroci\u0105gowego przez nie blokowanie przesuwu osiowego i bocznego. W takim przypadku zawsze pojawi si\u0119 na kr\u00f3\u0107cu si\u0142a reakcji zgodnie z III zasad\u0105 dynamiki Newtona. 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