{"id":2110,"date":"2025-03-01T10:24:39","date_gmt":"2025-03-01T02:24:39","guid":{"rendered":"https:\/\/led.amasly.com\/?p=2110"},"modified":"2025-12-27T20:27:32","modified_gmt":"2025-12-27T12:27:32","slug":"nektere-znalosti-o-ventilatorech-odolnych-proti-vybuchu","status":"publish","type":"post","link":"https:\/\/led.amasly.com\/cs\/zarizeni-odolna-proti-vybuchu\/nektere-znalosti-o-ventilatorech-odolnych-proti-vybuchu\/","title":{"rendered":"Nev\u00fdbu\u0161n\u00e9 ventil\u00e1tory: v\u00fdb\u011br, pou\u017eit\u00ed a bezpe\u010dnostn\u00ed normy"},"content":{"rendered":"

Pr\u016fvodce nev\u00fdbu\u0161n\u00fdmi ventil\u00e1tory: v\u00fdb\u011br, pou\u017eit\u00ed a bezpe\u010dnostn\u00ed normy<\/strong><\/h1>\n\n\n\n

Ventil\u00e1tor odoln\u00fd proti v\u00fdbuchu<\/strong>s<\/h2>\n\n\n\n

P\u0159i doprav\u011b ho\u0159lav\u00fdch a v\u00fdbu\u0161n\u00fdch plyn\u016f a prach\u016f jsou statick\u00e1 elekt\u0159ina a jiskry mimo\u0159\u00e1dn\u011b nebezpe\u010dn\u00fdmi faktory, kter\u00e9 mohou zp\u016fsobit v\u00fdbuch a dal\u0161\u00ed bezpe\u010dnostn\u00ed nehody, pokud nejsou p\u0159ijata zvl\u00e1\u0161tn\u00ed manipula\u010dn\u00ed opat\u0159en\u00ed.<\/p>\n\n\n\n

\"\"<\/figure><\/div>\n\n\n\n

1 Jak potvrdit nev\u00fdbu\u0161nost ventil\u00e1tor\u016f?<\/strong><\/h2>\n\n\n\n

Chcete-li p\u0159esn\u011b ov\u011b\u0159it, zda je ventil\u00e1tor nev\u00fdbu\u0161n\u00fd, m\u016f\u017eete to posoudit pomoc\u00ed n\u00e1sleduj\u00edc\u00edch metod: nejprve zkontrolujte, zda m\u00e1 nev\u00fdbu\u0161n\u00fd pl\u00e1\u0161\u0165 ventil\u00e1toru nebo elektrick\u00e1 ovl\u00e1dac\u00ed sk\u0159\u00ed\u0148ka. zna\u010dka odolnosti proti v\u00fdbuchu.<\/strong> Tento symbol obsahuje \u00fadaje o t\u0159\u00edd\u011b nev\u00fdbu\u0161nosti, typu plynu nebo prachu, pro kter\u00fd plat\u00ed, typu nev\u00fdbu\u0161nosti atd. V \u010c\u00edn\u011b tyto normy stanovuje AQSIQ. V \u010c\u00edn\u011b tyto normy stanovuje a vyhla\u0161uje AQSIQ.
     Za druh\u00e9 je d\u016fle\u017eit\u00e9 m\u00edt hlubok\u00e9 znalosti o stupn\u00edch ochrany proti v\u00fdbuchu. Stupn\u011b ochrany proti v\u00fdbuchu se obvykle vyjad\u0159uj\u00ed ve dvou norm\u00e1ch: IP a EX. Norma IP se zab\u00fdv\u00e1 p\u0159edev\u0161\u00edm \u00farovn\u00ed ochrany, zat\u00edmco norma EX je ur\u010dena speci\u00e1ln\u011b pro nev\u00fdbu\u0161n\u00e1 za\u0159\u00edzen\u00ed. V norm\u011b EX p\u0159edstavuj\u00ed dal\u0161\u00ed dv\u011b \u010d\u00edslice \u00farove\u0148 nev\u00fdbu\u0161nosti, nap\u0159\u00edklad u EXdIICT6 p\u0159edstavuje \u201cd\u201d nev\u00fdbu\u0161n\u00fd pl\u00e1\u0161\u0165, \u201cII\u201d p\u0159\u00edslu\u0161n\u00fd typ plynu nebo prachu, \u201cCT6\u201d mezn\u00ed n\u00e1r\u016fst teploty. \u201cCT6\u201d ozna\u010duje mezn\u00ed hodnotu n\u00e1r\u016fstu teploty.
    D\u00e1le je d\u016fle\u017eit\u00e9 rozpoznat ozna\u010den\u00ed nev\u00fdbu\u0161nosti ventil\u00e1toru a odpov\u00eddaj\u00edc\u00ed certifikaci. Ozna\u010den\u00ed nev\u00fdbu\u0161nosti se obecn\u011b d\u011bl\u00ed na Ex a D. Ozna\u010den\u00ed Ex je b\u011b\u017en\u00e9 evropsk\u00e9 a mezin\u00e1rodn\u00ed ozna\u010den\u00ed nev\u00fdbu\u0161nosti, zat\u00edmco ozna\u010den\u00ed D je specifick\u00e9 pro N\u011bmecko. Krom\u011b toho mus\u00ed nev\u00fdbu\u0161n\u00e9 ventil\u00e1tory proj\u00edt tak\u00e9 odpov\u00eddaj\u00edc\u00ed certifikac\u00ed nev\u00fdbu\u0161nosti, nap\u0159\u00edklad certifikac\u00ed ATEX Evropsk\u00e9 unie a \u010d\u00ednskou certifikac\u00ed CCC.
     Sou\u010dasn\u011b je d\u016fle\u017eit\u00e9 pln\u011b porozum\u011bt po\u017eadavk\u016fm na prost\u0159ed\u00ed a pou\u017eit\u00ed ventil\u00e1tor\u016f s ochranou proti v\u00fdbuchu. Ventil\u00e1tory s ochranou proti v\u00fdbuchu se pou\u017e\u00edvaj\u00ed p\u0159edev\u0161\u00edm v ho\u0159lav\u00e9m a v\u00fdbu\u0161n\u00e9m prost\u0159ed\u00ed, jako jsou chemick\u00e9 z\u00e1vody, petrochemie, uheln\u00e9 doly atd. P\u0159i v\u00fdb\u011bru nev\u00fdbu\u0161n\u00e9ho ventil\u00e1toru je t\u0159eba podrobn\u011b porozum\u011bt podm\u00ednk\u00e1m prost\u0159ed\u00ed, v\u010detn\u011b stupn\u011b plynu, kapaliny, prachu atd. a teploty, vlhkosti a dal\u0161\u00edch faktor\u016f.
     Nakonec je nutn\u00e9 ur\u010dit vhodn\u00fd stupe\u0148 nev\u00fdbu\u0161nosti (nap\u0159. Exd, Exe) a stupe\u0148 kryt\u00ed (nap\u0159. IP54, IP65) podle konkr\u00e9tn\u00edch podm\u00ednek prost\u0159ed\u00ed a pracovn\u00edch po\u017eadavk\u016f. A tak\u00e9 zva\u017ete materi\u00e1ly pou\u017eit\u00e9 pro ventil\u00e1tor, jako je hlin\u00edkov\u00e1 slitina, nerezov\u00e1 ocel atd. a odolnost t\u011bchto materi\u00e1l\u016f proti korozi a vysok\u00fdm teplot\u00e1m.<\/p>\n\n\n\n

2 Nev\u00fdbu\u0161n\u00e9 ventil\u00e1tory pro jak\u00e1 m\u00edsta<\/strong><\/h2>\n\n\n\n

Nev\u00fdbu\u0161n\u00e9 ventil\u00e1tory se hojn\u011b pou\u017e\u00edvaj\u00ed v mnoha pr\u016fmyslov\u00fdch oblastech, kde je t\u0159eba zabr\u00e1nit v\u00fdbuch\u016fm zp\u016fsoben\u00fdm jiskrami nebo vysok\u00fdmi teplotami. N\u00ed\u017ee jsou uvedeny n\u011bkter\u00e9 b\u011b\u017en\u00e9 oblasti pou\u017eit\u00ed nev\u00fdbu\u0161n\u00fdch ventil\u00e1tor\u016f:<\/p>\n\n\n\n

Chemick\u00e9 z\u00e1vody: V chemick\u00e9m pr\u016fmyslu se vyskytuje mnoho ho\u0159lav\u00fdch a v\u00fdbu\u0161n\u00fdch l\u00e1tek. Nev\u00fdbu\u0161n\u00e9 ventil\u00e1tory se pou\u017e\u00edvaj\u00ed k zaji\u0161t\u011bn\u00ed toho, aby p\u0159i manipulaci s chemick\u00fdmi l\u00e1tkami, jejich m\u00edch\u00e1n\u00ed nebo doprav\u011b nevznikaly jiskry nebo vysok\u00e9 teploty, \u010d\u00edm\u017e se sni\u017euje riziko po\u017e\u00e1ru nebo v\u00fdbuchu.<\/p>\n\n\n\n

Ropn\u00fd a plyn\u00e1rensk\u00fd pr\u016fmysl: Ventil\u00e1tory odoln\u00e9 proti v\u00fdbuchu se pou\u017e\u00edvaj\u00ed k manipulaci a p\u0159eprav\u011b ropy a plynu v rafin\u00e9ri\u00edch, na ropn\u00fdch a plynov\u00fdch vrtn\u00fdch plo\u0161in\u00e1ch, v tankovi\u0161t\u00edch atd., aby byl zaji\u0161t\u011bn bezpe\u010dn\u00fd provoz v prost\u0159ed\u00ed s ho\u0159lav\u00fdmi plyny.<\/p>\n\n\n\n

\"\"<\/a><\/figure><\/div>\n\n\n\n

T\u011b\u017eba: V d\u016fln\u00edch provozech se kv\u016fli p\u0159\u00edtomnosti ho\u0159lav\u00fdch plyn\u016f nebo prachu pou\u017e\u00edvaj\u00ed nev\u00fdbu\u0161n\u00e9 ventil\u00e1tory k v\u011btr\u00e1n\u00ed, odv\u00e1d\u011bn\u00ed v\u00fdfukov\u00fdch plyn\u016f a zaji\u0161t\u011bn\u00ed toho, aby v dole nevznikaly jiskry, kter\u00e9 by mohly zp\u016fsobit v\u00fdbuch.<\/p>\n\n\n\n

Farmaceutick\u00e1 v\u00fdroba: Ve farmaceutick\u00e9m pr\u016fmyslu se nev\u00fdbu\u0161n\u00e9 ventil\u00e1tory pou\u017e\u00edvaj\u00ed k manipulaci s l\u00e9ky, pr\u00e1\u0161ky nebo roztoky a k zaji\u0161t\u011bn\u00ed toho, aby b\u011bhem v\u00fdrobn\u00edho procesu nedo\u0161lo k n\u00e1hodn\u00e9mu v\u00fdbuchu.<\/p>\n\n\n\n

Pr\u016fmysl barev a lak\u016f: Ventil\u00e1tory odoln\u00e9 proti v\u00fdbuchu se pou\u017e\u00edvaj\u00ed ve v\u00fdrobn\u00edch link\u00e1ch barev a lak\u016f, aby se zabr\u00e1nilo po\u017e\u00e1r\u016fm nebo v\u00fdbuch\u016fm zp\u016fsoben\u00fdm hromad\u011bn\u00edm par rozpou\u0161t\u011bdel nebo pevn\u00fdch \u010d\u00e1stic.<\/p>\n\n\n\n

Zpracov\u00e1n\u00ed potravin: Ventil\u00e1tory odoln\u00e9 proti v\u00fdbuchu se pou\u017e\u00edvaj\u00ed k zaji\u0161t\u011bn\u00ed bezpe\u010dnosti p\u0159i v\u00fdrob\u011b potravin v potravin\u00e1\u0159sk\u00e9m pr\u016fmyslu, zejm\u00e9na v prost\u0159ed\u00ed, kde je t\u0159eba manipulovat s prachem nebo ho\u0159lav\u00fdmi plyny.<\/p>\n\n\n\n

Nev\u00fdbu\u0161n\u00e9 ventil\u00e1tory hraj\u00ed d\u016fle\u017eitou roli v r\u016fzn\u00fdch pr\u016fmyslov\u00fdch odv\u011btv\u00edch a pou\u017e\u00edvaj\u00ed se k zaji\u0161t\u011bn\u00ed bezpe\u010dn\u00e9ho provozu a v\u00fdroby v ho\u0159lav\u00e9m a v\u00fdbu\u0161n\u00e9m prost\u0159ed\u00ed.<\/p>\n\n\n\n

3 Jak\u00fd je princip nev\u00fdbu\u0161n\u00e9ho ventil\u00e1toru?<\/strong><\/strong><\/h2>\n\n\n\n

Principem nev\u00fdbu\u0161n\u00e9ho ventil\u00e1toru je. schopnost zabr\u00e1nit p\u0159\u00edpadn\u00fdm jiskr\u00e1m, oblouk\u016fm a nebezpe\u010dn\u00fdm teplot\u00e1m b\u011bhem provozu nebo pr\u00e1ce, a t\u00edm zajistit, aby jeho provoz nemohl zap\u00e1lit okoln\u00ed v\u00fdbu\u0161n\u00e9 prost\u0159ed\u00ed.<\/strong>.<\/p>\n\n\n\n

Hnac\u00ed motor nev\u00fdbu\u0161n\u00e9ho ventil\u00e1toru je vyroben z nev\u00fdbu\u0161n\u00e9ho motoru a materi\u00e1l ob\u011b\u017en\u00e9ho kola a pl\u00e1\u0161t\u011b je vyroben z p\u00e1rov\u00e9ho materi\u00e1lu, kter\u00fd spl\u0148uje po\u017eadavky na nev\u00fdbu\u0161nost. Mont\u00e1\u017e pl\u00e1\u0161t\u011b a ob\u011b\u017en\u00e9ho kola ventil\u00e1toru odoln\u00e9ho proti v\u00fdbuchu, ochrana p\u0159\u00edvodu a odvodu vzduchu, vliv zat\u00ed\u017een\u00ed na zv\u00fd\u0161en\u00ed teploty motoru a ochrann\u00e9 uzem\u0148ovac\u00ed za\u0159\u00edzen\u00ed atd. by rovn\u011b\u017e m\u011bly spl\u0148ovat po\u017eadavky normy odolnosti proti v\u00fdbuchu.<\/p>\n\n\n\n

Existuje mnoho typ\u016f nev\u00fdbu\u0161n\u00fdch ventil\u00e1tor\u016f, nap\u0159\u00edklad nev\u00fdbu\u0161n\u00e9 axi\u00e1ln\u00ed ventil\u00e1tory, nev\u00fdbu\u0161n\u00e9 odst\u0159ediv\u00e9 ventil\u00e1tory, nev\u00fdbu\u0161n\u00e9 ventil\u00e1tory s bo\u010dn\u00ed st\u011bnou, nev\u00fdbu\u0161n\u00e9 st\u0159e\u0161n\u00ed ventil\u00e1tory atd.<\/p>\n\n\n\n

4 Obecn\u00e9 po\u017eadavky na nev\u00fdbu\u0161n\u00e9 ventil\u00e1tory<\/strong><\/strong><\/h2>\n\n\n\n

I. Po\u017eadavky na v\u00fdkonnost nev\u00fdbu\u0161n\u00fdch ventil\u00e1tor\u016f<\/strong><\/strong><\/h3>\n\n\n\n

1. V rozsahu jmenovit\u00fdch ot\u00e1\u010dek a stanoven\u00e9ho pr\u016ftoku mus\u00ed odchylka mezi nam\u011b\u0159en\u00fdm pneumatick\u00fdm v\u00fdkonem ventil\u00e1toru a stanoven\u00fdm pneumatick\u00fdm v\u00fdkonem spl\u0148ovat n\u00e1sleduj\u00edc\u00ed ustanoven\u00ed:<\/p>\n\n\n\n

a) P\u0159i stanoven\u00e9m pr\u016ftoku nep\u0159ekro\u010d\u00ed hodnota tlaku ventil\u00e1toru s \u010d\u00edslem stroje men\u0161\u00edm nebo rovn\u00fdm \u010d\u00edslu 10 -8 %~+ 5% stanoven\u00e9 hodnoty; hodnota tlaku ventil\u00e1toru s \u010d\u00edslem stroje v\u011bt\u0161\u00edm ne\u017e \u010d\u00edslo 10 nep\u0159ekro\u010d\u00ed -5%~+5% stanoven\u00e9 hodnoty.<\/p>\n\n\n\n

b) \u00da\u010dinnost ventil\u00e1toru nesm\u00ed b\u00fdt ni\u017e\u0161\u00ed ne\u017e 8% jeho odpov\u00eddaj\u00edc\u00ed bodov\u00e9 \u00fa\u010dinnosti.<\/p>\n\n\n\n

2. Hluk ventil\u00e1toru v nejlep\u0161\u00edm pracovn\u00edm bod\u011b, ne\u017e je hladina hluku A Hodnota Las by m\u011bla b\u00fdt v souladu s ustanoven\u00edmi JB\/T 8690.<\/p>\n\n\n\n

3. Zv\u00fd\u0161en\u00ed teploty lo\u017eiska a rychlost podp\u016frn\u00fdch vibrac\u00ed ventil\u00e1toru mus\u00ed spl\u0148ovat n\u00e1sleduj\u00edc\u00ed ustanoven\u00ed:<\/p>\n\n\n\n

a) Teplota lo\u017eiska nam\u011b\u0159en\u00e1 na jeho povrchu nesm\u00ed b\u00fdt vy\u0161\u0161\u00ed ne\u017e teplota okol\u00ed o v\u00edce ne\u017e 40 \u2103.<\/p>\n\n\n\n

b) Efektivn\u00ed hodnota rychlosti vibrac\u00ed nesm\u00ed p\u0159ekro\u010dit 4,6 mm\/s u tuh\u00fdch lo\u017eisek a 7,1 mm\/s u pru\u017en\u00fdch lo\u017eisek.<\/strong><\/p>\n\n\n\n

II. Struktur\u00e1ln\u00ed po\u017eadavky<\/strong>\u3000\u3000<\/p>\n\n\n\n

1. Z\u00e1kladn\u00ed po\u017eadavky na konstrukci<\/p>\n\n\n\n

a) Za stanoven\u00fdch pracovn\u00edch podm\u00ednek mus\u00ed b\u00fdt ventil\u00e1tor a pomocn\u00e9 za\u0159\u00edzen\u00ed navr\u017eeny na \u017eivotnost nejm\u00e9n\u011b 10a (s v\u00fdjimkou opot\u0159ebiteln\u00fdch d\u00edl\u016f) a na dobu bezpe\u010dn\u00e9ho provozu nejm\u00e9n\u011b 18 000 h p\u0159ed prvn\u00ed gener\u00e1ln\u00ed opravou.<\/p>\n\n\n\n

b) Kritick\u00e1 rychlost tuh\u00e9ho h\u0159\u00eddele ventil\u00e1toru mus\u00ed b\u00fdt 1,3n\u00e1sobek maxim\u00e1ln\u00ed pracovn\u00ed rychlosti.<\/p>\n\n\n\n

c) Z\u00e1kladn\u00ed typ, rozm\u011brov\u00e9 parametry a v\u00fdkonov\u00e1 k\u0159ivka ventil\u00e1toru by m\u011bly odpov\u00eddat ustanoven\u00edm GB\/T 3235.<\/p>\n\n\n\n

d) Ventil\u00e1tor v konstrukci, po\u017eadavky na rotuj\u00edc\u00ed \u010d\u00e1sti a p\u0159ilehl\u00e9 statick\u00e9 \u010d\u00e1sti, aby se zabr\u00e1nilo t\u0159en\u00ed, aby se zabr\u00e1nilo vzniku jisker. M\u011bly by b\u00fdt spln\u011bny dal\u0161\u00ed aspekty, jako je konstrukce, typ, pevnost, tuhost atd. axi\u00e1ln\u00ed ventil\u00e1tor by m\u011bl b\u00fdt v souladu s p\u0159\u00edslu\u0161n\u00fdmi ustanoven\u00edmi JB\/T 10562, odst\u0159ediv\u00fd ventil\u00e1tor by m\u011bl b\u00fdt v souladu s p\u0159\u00edslu\u0161n\u00fdmi ustanoven\u00edmi JB\/T 10563 a ostatn\u00ed ventil\u00e1tory by m\u011bly b\u00fdt v souladu s ustanoven\u00edmi p\u0159\u00edslu\u0161n\u00fdch norem.<\/p>\n\n\n\n

2. Ob\u011b\u017en\u00e9 kolo<\/p>\n\n\n\n

a) Ob\u011b\u017en\u00e9 kolo ventil\u00e1toru mus\u00ed b\u00fdt podrobeno zkou\u0161ce nadm\u011brn\u00fdch ot\u00e1\u010dek a ob\u011b\u017en\u00e9 kolo mus\u00ed b\u00fdt provozov\u00e1no p\u0159i ot\u00e1\u010dk\u00e1ch nejm\u00e9n\u011b 110 % maxim\u00e1ln\u00edch pracovn\u00edch ot\u00e1\u010dek po dobu nejm\u00e9n\u011b 2 minut a v souladu s ustanoven\u00edmi JB\/T 6445.<\/p>\n\n\n\n

b) Ob\u011b\u017en\u00e9 kolo by m\u011blo b\u00fdt vyv\u00e1\u017eeno a opraveno a \u00farove\u0148 kvality vyv\u00e1\u017een\u00ed by m\u011bla b\u00fdt v souladu s ustanoven\u00edmi JB\/T 9101.<\/p>\n\n\n\n

c) n\u00fdty pro n\u00fdtovan\u00e9 \u010d\u00e1sti ob\u011b\u017en\u00e9ho kola s pr\u016fchoz\u00edm pr\u016fm\u011brem podle p\u0159\u00edslu\u0161n\u00fdch ustanoven\u00ed, po\u017eadavky na kvalitu n\u00fdtov\u00e1n\u00ed by m\u011bly b\u00fdt v souladu s ustanoven\u00edmi JB \/ T 10214.<\/p>\n\n\n\n

III. Hlavn\u00ed \u010d\u00e1sti<\/strong><\/p>\n\n\n\n

a) Pokud je ob\u011b\u017en\u00e9 kolo ventil\u00e1toru vyrobeno z hlin\u00edkov\u00e9 slitiny, mus\u00ed b\u00fdt vstupn\u00ed komora a pl\u00e1\u0161\u0165 vyrobeny z uhl\u00edkov\u00e9 oceli.<\/p>\n\n\n\n

b) ob\u011b\u017en\u00e9 kolo ventil\u00e1toru z ocelov\u00fdch materi\u00e1l\u016f, krou\u017eek \u00fast\u00ed vstupn\u00ed komory odst\u0159ediv\u00e9ho ventil\u00e1toru a n\u00fdty mus\u00ed b\u00fdt pou\u017eity mosazn\u00e9 nebo hlin\u00edkov\u00e9; v \u010d\u00e1stech mosazn\u00e9ho nebo hlin\u00edkov\u00e9ho krou\u017eku a p\u0159\u00edslu\u0161n\u00fdch n\u00fdt\u016f mus\u00ed b\u00fdt pou\u017eita ocelov\u00e1 sk\u0159\u00ed\u0148 axi\u00e1ln\u00edho ventil\u00e1toru odpov\u00eddaj\u00edc\u00ed ob\u011b\u017en\u00e9mu kolu.  <\/p>\n\n\n\n

c) Pou\u017eit\u00ed jin\u00fdch materi\u00e1l\u016f, by m\u011blo b\u00fdt pou\u017eito k rotaci a statick\u00e9 \u010d\u00e1sti materi\u00e1lu nevytv\u00e1\u0159\u00ed jiskry, technick\u00e9 po\u017eadavky by m\u011bly b\u00fdt v souladu s ustanoven\u00edmi JB \/ T 10562 a JB \/ T 10563.<\/p>\n\n\n\n

IV.<\/strong><\/p>\n\n\n\n

a) Po\u017eadavky na odlitky Kvalita odlitk\u016f by m\u011bla b\u00fdt v souladu s p\u0159\u00edslu\u0161n\u00fdmi ustanoven\u00edmi.<\/p>\n\n\n\n

b) Po\u017eadavky na n\u00fdtovan\u00e9 d\u00edly Kvalita sva\u0159ov\u00e1n\u00ed, v\u00fdroba n\u00fdtovan\u00fdch d\u00edl\u016f a dal\u0161\u00ed po\u017eadavky na sva\u0159ov\u00e1n\u00ed mus\u00ed b\u00fdt v souladu s p\u0159\u00edslu\u0161n\u00fdmi ustanoven\u00edmi.<\/p>\n\n\n\n

V. Po\u017eadavky na mont\u00e1\u017e<\/strong><\/strong><\/p>\n\n\n\n

a) odst\u0159ediv\u00fd ventil\u00e1tor vstupn\u00ed komora \u00fast\u00ed krou\u017eek a ob\u011b\u017en\u00e9ho kola vstupn\u00ed radi\u00e1ln\u00ed v\u016fle pod\u00e9l obvodu by m\u011bla b\u00fdt rovnom\u011brn\u00e1, \u010d\u00edslo stroje men\u0161\u00ed nebo rovna \u2116.10 ventil\u00e1toru radi\u00e1ln\u00ed jednostrann\u00e1 v\u016fle pro 2,5 mm ~ 4 mm, \u010d\u00edslo stroje v\u011bt\u0161\u00ed ne\u017e No. 10 ventil\u00e1toru radi\u00e1ln\u00ed jednostrannou v\u016fli pro (0,15% ~ 0,4%) D pr\u016fm\u011br ob\u011b\u017en\u00e9ho kola, ale minim\u00e1ln\u00ed radi\u00e1ln\u00ed jednostrann\u00e1 v\u016fle nesm\u00ed b\u00fdt men\u0161\u00ed ne\u017e 2,5 mm, d\u00e9lka axi\u00e1ln\u00edho p\u0159ekryt\u00ed (0,8% ~ 1,2%) D pr\u016fm\u011br ob\u011b\u017en\u00e9ho kola. ~1,2 % ) D pr\u016fm\u011br ob\u011b\u017en\u00e9ho kola.<\/p>\n\n\n\n

b) axi\u00e1ln\u00ed pr\u016ftok ventil\u00e1toru sk\u0159\u00edn\u011b a radi\u00e1ln\u00ed v\u016fle ob\u011b\u017en\u00e9ho kola by m\u011bla b\u00fdt jednotn\u00e1, \u010d\u00edslo stroje je men\u0161\u00ed nebo rovno \u010d. 10 radi\u00e1ln\u00ed jednostrann\u00e9 v\u016fle ventil\u00e1toru 2,5 mm ~ 4 mm, \u010d\u00edslo stroje je v\u011bt\u0161\u00ed ne\u017e \u010d. 10 radi\u00e1ln\u00ed jednostrann\u00e9 v\u016fle ventil\u00e1toru (0,15% ~ 0,35%) D pr\u016fm\u011br ob\u011b\u017en\u00e9ho kola, ale minim\u00e1ln\u00ed radi\u00e1ln\u00ed jednostrann\u00e1 v\u016fle nesm\u00ed b\u00fdt men\u0161\u00ed ne\u017e 2,5 mm.<\/p>\n\n\n\n

VI. Bezpe\u010dnostn\u00ed po\u017eadavky<\/strong>\u3000\u3000<\/p>\n\n\n\n

a) Neho\u0159lav\u00e9 motory a podp\u016frn\u00e9 elektrick\u00e9 p\u0159\u00edslu\u0161enstv\u00ed pou\u017e\u00edvan\u00e9 pro ventil\u00e1tory mus\u00ed spl\u0148ovat p\u0159\u00edslu\u0161n\u00e9 p\u0159edpisy.<\/p>\n\n\n\n

b) Povrch sk\u0159\u00edn\u011b ventil\u00e1toru a povrch pohonn\u00e9 jednotky mus\u00ed b\u00fdt opat\u0159en uzem\u0148ovac\u00edm za\u0159\u00edzen\u00edm, kter\u00e9 spl\u0148uje po\u017eadavky na nev\u00fdbu\u0161nost, a trval\u00fdm symbolem uzemn\u011bn\u00ed na p\u0159\u00edslu\u0161n\u00e9m m\u00edst\u011b.<\/p>\n\n\n\n

c) komora s\u00e1n\u00ed vzduchu ventil\u00e1toru je p\u0159\u00edmo otev\u0159en\u00e1 do atmosf\u00e9ry, komora s\u00e1n\u00ed vzduchu mus\u00ed b\u00fdt vybavena pevnou ochrannou m\u0159\u00ed\u017ekou (nebo s\u00edt\u00ed), aby se zabr\u00e1nilo nas\u00e1t\u00ed ciz\u00edch p\u0159edm\u011bt\u016f do ventil\u00e1toru. N\u00e1vrh konstrukce ochrann\u00e9 m\u0159\u00ed\u017eky (s\u00edt\u011b) krom\u011b zohledn\u011bn\u00ed velikosti po\u010dtu ventil\u00e1tor\u016f, pracovn\u00edho prost\u0159ed\u00ed a dal\u0161\u00edch faktor\u016f by m\u011bl b\u00fdt tak\u00e9 zv\u00e1\u017een, aby byla p\u0159id\u00e1na ochrann\u00e1 m\u0159\u00ed\u017eka (s\u00ed\u0165) zp\u016fsoben\u00e1 odporem proud\u011bn\u00ed vzduchu minimalizov\u00e1na.<\/p>\n\n\n\n

d) p\u0159evodov\u00e1 skupina, spojka, \u0159emenice, \u0159emeny a dal\u0161\u00ed rotuj\u00edc\u00ed (p\u0159evodov\u00e9) \u010d\u00e1sti by m\u011bly b\u00fdt opat\u0159eny ochrann\u00fdm krytem a v souladu s ustanoven\u00edmi GB\/T 19074. Konstrukce krytu by m\u011bla b\u00fdt pevn\u00e1 a m\u011bla by zabr\u00e1nit kontaktu s rotuj\u00edc\u00edmi \u010d\u00e1stmi. Aby se zabr\u00e1nilo shroma\u017e\u010fov\u00e1n\u00ed statick\u00e9 elekt\u0159iny na krytu a vzniku jisker, m\u011bl by b\u00fdt kryt krytu izolov\u00e1n spolehliv\u00fdm uzem\u0148ovac\u00edm za\u0159\u00edzen\u00edm.<\/p>\n\n\n\n

e) Ot\u00e1\u010dej\u00edc\u00ed se \u010d\u00e1sti ventil\u00e1toru mus\u00ed b\u00fdt pevn\u011b upevn\u011bny a m\u011bla by existovat opat\u0159en\u00ed proti uvoln\u011bn\u00ed (ob\u011b\u017en\u00e9 kolo a h\u0159\u00eddel jsou zaji\u0161t\u011bny; lo\u017eiskov\u00e9 ulo\u017een\u00ed, lo\u017eiskov\u00e1 sk\u0159\u00ed\u0148 a motor a dr\u017e\u00e1k maj\u00ed polohovac\u00ed opat\u0159en\u00ed).<\/p>\n\n\n\n

f) ventil\u00e1tor, kdy\u017e v\u0159eteno ob\u011b\u017en\u00e9ho kola proch\u00e1z\u00ed sk\u0159\u00edn\u00ed, ocelov\u00fd pl\u00e1\u0161\u0165 otvoru h\u0159\u00eddele a h\u0159\u00eddel p\u0159es \u010d\u00e1st by m\u011bly b\u00fdt instalov\u00e1ny s zastaven\u00edm hlin\u00edkov\u00e9ho t\u011bsnic\u00edho izola\u010dn\u00edho krou\u017eku; t\u011bsnic\u00ed izola\u010dn\u00ed krou\u017eek otvoru a h\u0159\u00eddele s jednostrannou v\u016fl\u00ed 0,5 mm.<\/p>\n\n\n\n

5.Pr\u016fvodce v\u00fdb\u011brem a velikost\u00ed<\/h2>\n\n\n\n

V\u00fdb\u011br spr\u00e1vn\u00e9ho nev\u00fdbu\u0161n\u00e9ho ventil\u00e1toru vy\u017eaduje pe\u010dlivou anal\u00fdzu konkr\u00e9tn\u00ed aplikace. Pou\u017eijte n\u00e1sleduj\u00edc\u00ed kontroln\u00ed seznam:<\/p>\n\n\n\n