{"id":4284,"date":"2023-04-23T20:40:31","date_gmt":"2023-04-23T12:40:31","guid":{"rendered":"http:\/\/www.dcl-controls.com\/?p=4284"},"modified":"2025-03-31T09:27:20","modified_gmt":"2025-03-31T09:27:20","slug":"why-explosion-proof-actuator","status":"publish","type":"post","link":"https:\/\/dclcontrols.com\/cs_cz\/podpora\/aktuator-2\/proc-pohon-odolny-proti-vybuchu","title":{"rendered":"Pro\u010d n\u011bkter\u00e9 pohony pot\u0159ebuj\u00ed ochranu proti v\u00fdbuchu?"},"content":{"rendered":"
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\u00a0<\/p>

1. Co je to exploze?<\/strong><\/h2>

K v\u00fdbuchu doch\u00e1z\u00ed, kdy\u017e ho\u0159lav\u00e9 l\u00e1tky se m\u00eds\u00ed s kysl\u00edkem<\/strong> a za ur\u010dit\u00fdch podm\u00ednek se vzn\u00edt\u00ed. Pokud rychlost reakce p\u0159ekra\u010duje rychlost zvuku<\/strong>, m\u00e1 to za n\u00e1sledek ni\u010div\u00e1 explozn\u00ed vlna<\/strong>.<\/p>

2. Co je ochrana proti v\u00fdbuchu?<\/strong><\/h2>

Na zabr\u00e1nit v\u00fdbuch\u016fm<\/strong>, mus\u00ed b\u00fdt kontrolov\u00e1n alespo\u0148 jeden ze t\u0159\u00ed kl\u00ed\u010dov\u00fdch faktor\u016f:<\/p>

  1. Ho\u0159lav\u00e9 l\u00e1tky<\/strong><\/p><\/li>

  2. Kysl\u00edk<\/strong><\/p><\/li>

  3. Zdroj zap\u00e1len\u00ed<\/strong><\/p><\/li><\/ol>

    Od ho\u0159lav\u00fdm l\u00e1tk\u00e1m a kysl\u00edku se \u010dasto nelze vyhnout<\/strong> v pr\u016fmyslov\u00e9m prost\u0159ed\u00ed, zdroj zap\u00e1len\u00ed mus\u00ed b\u00fdt kontrolov\u00e1n<\/strong>.<\/p>

    Elektrick\u00e9 za\u0159\u00edzen\u00ed je potenci\u00e1ln\u00ed zdroj vzn\u00edcen\u00ed<\/strong> kv\u016fli:
    \u2714 Povrchov\u00e9 zah\u0159\u00edv\u00e1n\u00ed b\u011bhem provozu<\/strong>
    \u2714 Elektrostatick\u00fd v\u00fdboj<\/strong>
    \u2714 Jiskry z elektrick\u00fdch proud\u016f<\/strong><\/p>

    Elektrick\u00e1 za\u0159\u00edzen\u00ed v nev\u00fdbu\u0161n\u00e9m proveden\u00ed jsou navr\u017eeno tak, aby zabr\u00e1nilo nadm\u011brn\u00fdm povrchov\u00fdm teplot\u00e1m a elektrick\u00fdm jiskr\u00e1m<\/strong>, \u010d\u00edm\u017e se zajist\u00ed, \u017ee nest\u00e1v\u00e1 se zdrojem vzn\u00edcen\u00ed<\/strong>.<\/p>

    <\/p>

    3. Klasifikace nebezpe\u010dn\u00fdch prost\u0159ed\u00ed<\/strong><\/h2>

    Elektrick\u00e1 za\u0159\u00edzen\u00ed v nev\u00fdbu\u0161n\u00e9m proveden\u00ed se d\u011bl\u00ed do dvou kategori\u00ed:<\/p>

    • Kategorie I<\/strong>Vybaven\u00ed pro uheln\u00e9 doly<\/strong><\/p><\/li>

    • Kategorie II<\/strong>Vybaven\u00ed pro jin\u00e1 prost\u0159ed\u00ed s v\u00fdbu\u0161n\u00fdmi plyny<\/strong><\/p><\/li><\/ul>

      Za\u0159\u00edzen\u00ed kategorie II<\/strong><\/h3>

      1. Skupiny v\u00fdbu\u0161nosti (na z\u00e1klad\u011b bezpe\u010dnostn\u00ed mezery a z\u00e1paln\u00e9ho proudu)<\/strong><\/p>

        • IIA<\/strong><\/p><\/li>

        • IIB<\/strong> (lze pou\u017e\u00edt v podm\u00ednk\u00e1ch IIA)<\/p><\/li>

        • IIC<\/strong> (lze pou\u017e\u00edt v podm\u00ednk\u00e1ch IIA a IIB)<\/p><\/li><\/ul><\/li>

        • Teplotn\u00ed skupiny (na z\u00e1klad\u011b maxim\u00e1ln\u00ed povrchov\u00e9 teploty)<\/strong><\/p>

          • T1 (450 \u00b0C)<\/strong><\/p><\/li>

          • T2 (300 \u00b0C)<\/strong><\/p><\/li>

          • T3 (200 \u00b0C)<\/strong><\/p><\/li>

          • T4 (135 \u00b0C)<\/strong><\/p><\/li>

          • T5 (100 \u00b0C)<\/strong><\/p><\/li>

          • T6 (85 \u00b0C)<\/strong><\/p><\/li><\/ul><\/li><\/ol>

            V\u00edce ne\u017e 90% v\u00fdbu\u0161n\u00fdch plyn\u016f<\/strong> spadat pod Skupiny IIA, IIB<\/strong> a Teplotn\u00ed klasifikace T1\u2013T4<\/strong>.<\/p>

            <\/p>

            4. Jak je dosa\u017eeno ochrany proti v\u00fdbuchu?<\/strong><\/h2>

            N\u011bkolik metod zaji\u0161\u0165uje, \u017ee elektrick\u00e9 za\u0159\u00edzen\u00ed bezpe\u010dn\u00e9 pro v\u00fdbu\u0161n\u00e9 prost\u0159ed\u00ed<\/strong>, jak je definov\u00e1no GB3836, IEC60079, EN50014<\/strong> standardy.<\/p>

            <\/p>

            Proveden\u00ed odoln\u00e9 proti v\u00fdbuchu (Exd)<\/strong><\/h3>

            Pohony DCL v nev\u00fdbu\u0161n\u00e9m proveden\u00ed se vyr\u00e1b\u011bj\u00ed v souladu s:
            \u2714 GB3836.1-2010, GB3836.2-2010<\/strong>
            \u2714 IEC 60079-0, IEC 60079-1, IEC 60079-31<\/strong>
            \u2714 ISO\/IEC 80079-36, ISO\/IEC 80079-37<\/strong><\/p>

            Z\u00e1sady n\u00e1vrhu v ohnivzdorn\u00fdch (Exd) podm\u00ednk\u00e1ch<\/strong><\/h4>

            <\/p>

            \u2714 Uvnit\u0159 za\u0159\u00edzen\u00ed m\u016f\u017ee doj\u00edt k v\u00fdbuchu<\/strong>, ale kryt br\u00e1n\u00ed vzn\u00edcen\u00ed vn\u011bj\u0161\u00edho prost\u0159ed\u00ed.
            \u2714 Ohnivzdorn\u00e9 spoje<\/strong> jsou navr\u017eeny se spr\u00e1vn\u00fdm mezera a d\u00e9lka<\/strong> k zastaven\u00ed vnit\u0159n\u00edch exploz\u00ed.
            \u2714 Pevn\u00e9 kryty<\/strong> odolat vysok\u00fd vnit\u0159n\u00ed tlak<\/strong> bez zlomen\u00ed.<\/p>

            DCL komponenty odoln\u00e9 proti v\u00fdbuchu<\/strong><\/h3>

            \u2714 Motorov\u00fd prostor<\/strong>
            \u2714 Prostor elektrick\u00fdch sou\u010d\u00e1stek<\/strong>
            \u2714 P\u0159ihr\u00e1dka pro kabel\u00e1\u017e<\/strong><\/p>

            5. Certifikace pohonu DCL v nev\u00fdbu\u0161n\u00e9m proveden\u00ed<\/strong><\/h2>

            \u00darove\u0148 ochrany proti v\u00fdbuchu: Exd IIC T4 Gb<\/strong><\/h3>

            \u2714 B\u00fdval\u00fd<\/strong> \u2013 Ozna\u010den\u00ed pro nev\u00fdbu\u0161n\u00e9 prost\u0159ed\u00ed
            \u2714 d<\/strong> \u2013 Typ odoln\u00fd proti plameni (\u201eExd\u201c)
            \u2714 II.<\/strong> \u2013 Aplikace mimo t\u011b\u017ebu
            \u2714 C<\/strong> \u2013 Skupina v\u00fdbu\u0161nosti (vy\u0161\u0161\u00ed bezpe\u010dnostn\u00ed po\u017eadavky)
            \u2714 T4<\/strong> \u2013 Maxim\u00e1ln\u00ed povrchov\u00e1 teplota 135 \u00b0C<\/strong>
            \u2714 GB<\/strong> \u2013 \u00darove\u0148 ochrany za\u0159\u00edzen\u00ed<\/p>

            Z\u00e1v\u011br<\/strong><\/h3>

            Pohony odoln\u00e9 proti v\u00fdbuchu jsou nezbytn\u00e9 v nebezpe\u010dn\u00e1 prost\u0159ed\u00ed<\/strong> zabr\u00e1nit vzn\u00edcen\u00ed v\u00fdbu\u0161n\u00fdch plyn\u016f<\/strong>DCL Pohony s certifikac\u00ed Exd IIC T4 Gb<\/strong> zajistit bezpe\u010dnost t\u00edm, \u017ee:
            \u2714 Zadr\u017eov\u00e1n\u00ed vnit\u0159n\u00edch exploz\u00ed<\/strong>
            \u2714 Zabr\u00e1n\u011bn\u00ed jisk\u0159en\u00ed a nadm\u011brn\u00e9mu teplu<\/strong>
            \u2714 Odol\u00e1v\u00e1 vysok\u00e9mu tlaku bez prasknut\u00ed<\/strong><\/p>

            Tato konstruk\u010dn\u00ed opat\u0159en\u00ed zaji\u0161\u0165uj\u00ed Spolehliv\u00e9 a bezpe\u010dn\u00e9 pohony DCL<\/strong> pro pr\u016fmyslov\u00e9 aplikace ve v\u00fdbu\u0161n\u00e9m prost\u0159ed\u00ed<\/strong>.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<\/div>","protected":false},"excerpt":{"rendered":"

            \u00a0 1. Co je to v\u00fdbuch? K v\u00fdbuchu doch\u00e1z\u00ed, kdy\u017e se ho\u0159lav\u00e9 l\u00e1tky sm\u00edchaj\u00ed s kysl\u00edkem a za ur\u010dit\u00fdch podm\u00ednek se vzn\u00edt\u00ed. Pokud rychlost reakce p\u0159ekro\u010d\u00ed rychlost zvuku, vznikne destruktivn\u00ed v\u00fdbu\u0161n\u00e1 vlna. 2. Co je to ochrana proti v\u00fdbuchu? Aby se zabr\u00e1nilo v\u00fdbuch\u016fm, je nutn\u00e9 kontrolovat alespo\u0148 jeden ze t\u0159\u00ed kl\u00ed\u010dov\u00fdch faktor\u016f: [\u2026]<\/p>","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"elementor_theme","format":"standard","meta":{"_acf_changed":true,"footnotes":""},"categories":[91],"tags":[53,66,39],"class_list":["post-4284","post","type-post","status-publish","format-standard","hentry","category-an-actuator","tag-actuator","tag-explosion-proof-actuator","tag-faq"],"acf":[],"_links":{"self":[{"href":"https:\/\/dclcontrols.com\/cs_cz\/wp-json\/wp\/v2\/posts\/4284","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/dclcontrols.com\/cs_cz\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/dclcontrols.com\/cs_cz\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/dclcontrols.com\/cs_cz\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/dclcontrols.com\/cs_cz\/wp-json\/wp\/v2\/comments?post=4284"}],"version-history":[{"count":0,"href":"https:\/\/dclcontrols.com\/cs_cz\/wp-json\/wp\/v2\/posts\/4284\/revisions"}],"wp:attachment":[{"href":"https:\/\/dclcontrols.com\/cs_cz\/wp-json\/wp\/v2\/media?parent=4284"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/dclcontrols.com\/cs_cz\/wp-json\/wp\/v2\/categories?post=4284"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/dclcontrols.com\/cs_cz\/wp-json\/wp\/v2\/tags?post=4284"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}