{"id":710601,"date":"2024-09-24T14:20:50","date_gmt":"2024-09-24T13:20:50","guid":{"rendered":"https:\/\/www.thermal-engineering.org\/?p=710601"},"modified":"2024-09-24T14:20:50","modified_gmt":"2024-09-24T13:20:50","slug":"cach-ong-pitot-do-toc-do-luu-luong","status":"publish","type":"post","link":"https:\/\/www.thermal-engineering.org\/vi\/cach-ong-pitot-do-toc-do-luu-luong\/","title":{"rendered":"C\u00e1ch \u1ed1ng pitot \u0111o t\u1ed1c \u0111\u1ed9 l\u01b0u l\u01b0\u1ee3ng"},"content":{"rendered":"

C\u00e1ch \u1ed1ng pitot \u0111o t\u1ed1c \u0111\u1ed9 l\u01b0u l\u01b0\u1ee3ng: T\u00ecm hi\u1ec3u c\u00e1ch th\u1ee9c ho\u1ea1t \u0111\u1ed9ng c\u1ee7a \u1ed1ng pitot v\u00e0 vai tr\u00f2 c\u1ee7a n\u00f3 trong \u0111o l\u01b0\u1eddng t\u1ed1c \u0111\u1ed9 d\u00f2ng ch\u1ea3y trong c\u00e1c \u1ee9ng d\u1ee5ng k\u1ef9 thu\u1eadt.<\/p>\n

\"C\u00e1ch<\/p>\n

C\u00e1ch \u1ed0ng Pitot \u0110o T\u1ed1c \u0110\u1ed9 L\u01b0u L\u01b0\u1ee3ng<\/h2>\n

\u1ed0ng Pitot l\u00e0 m\u1ed9t thi\u1ebft b\u1ecb quan tr\u1ecdng trong l\u0129nh v\u1ef1c k\u1ef9 thu\u1eadt nhi\u1ec7t, d\u00f9ng \u0111\u1ec3 \u0111o t\u1ed1c \u0111\u1ed9 l\u01b0u l\u01b0\u1ee3ng c\u1ee7a ch\u1ea5t l\u1ecfng ho\u1eb7c kh\u00ed trong c\u00e1c h\u1ec7 th\u1ed1ng kh\u00e1c nhau. Thi\u1ebft b\u1ecb n\u00e0y ho\u1ea1t \u0111\u1ed9ng d\u1ef1a tr\u00ean nguy\u00ean l\u00fd c\u1ee7a \u0111\u1ed9ng l\u1ef1c h\u1ecdc ch\u1ea5t l\u1ecfng, v\u00e0 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng r\u1ed9ng r\u00e3i trong nhi\u1ec1u \u1ee9ng d\u1ee5ng c\u00f4ng nghi\u1ec7p v\u00e0 h\u00e0ng kh\u00f4ng.<\/p>\n

Nguy\u00ean L\u00fd Ho\u1ea1t \u0110\u1ed9ng C\u1ee7a \u1ed0ng Pitot<\/h2>\n

\u1ed0ng Pitot \u0111\u01b0\u1ee3c ph\u00e1t minh b\u1edfi k\u1ef9 s\u01b0 ng\u01b0\u1eddi Ph\u00e1p Henri Pitot v\u00e0o \u0111\u1ea7u th\u1ebf k\u1ef7 18. N\u00f3 ho\u1ea1t \u0111\u1ed9ng d\u1ef1a tr\u00ean nguy\u00ean l\u00fd Bernoulli, cho th\u1ea5y m\u1ed1i quan h\u1ec7 gi\u1eefa \u00e1p su\u1ea5t v\u00e0 t\u1ed1c \u0111\u1ed9 d\u00f2ng ch\u1ea3y c\u1ee7a ch\u1ea5t l\u1ecfng.<\/p>\n

\u1ed0ng Pitot bao g\u1ed3m hai ph\u1ea7n ch\u00ednh: m\u1ed9t \u1ed1ng th\u1eb3ng \u0111\u1ee9ng, nh\u1ecf, \u0111\u1ed1i di\u1ec7n tr\u1ef1c ti\u1ebfp v\u1edbi d\u00f2ng ch\u1ea3y \u0111\u1ec3 \u0111o t\u1ed5ng \u00e1p su\u1ea5t, v\u00e0 m\u1ed9t \u1ed1ng kh\u00e1c b\u1ed1 tr\u00ed vu\u00f4ng g\u00f3c \u0111\u1ec3 \u0111o \u00e1p su\u1ea5t t\u0129nh. S\u1ef1 ch\u00eanh l\u1ec7ch gi\u1eefa t\u1ed5ng \u00e1p su\u1ea5t v\u00e0 \u00e1p su\u1ea5t t\u0129nh cho ta bi\u1ebft v\u1ec1 \u00e1p su\u1ea5t \u0111\u1ed9ng, t\u1eeb \u0111\u00f3 c\u00f3 th\u1ec3 t\u00ednh to\u00e1n \u0111\u01b0\u1ee3c t\u1ed1c \u0111\u1ed9 d\u00f2ng ch\u1ea3y.<\/p>\n

C\u00e1ch X\u00e1c \u0110\u1ecbnh T\u1ed1c \u0110\u1ed9 T\u1eeb Ch\u00eanh L\u1ec7ch \u00c1p Su\u1ea5t<\/h2>\n

\u0110\u1ec3 t\u00ednh to\u00e1n t\u1ed1c \u0111\u1ed9 d\u00f2ng ch\u1ea3y t\u1eeb c\u00e1c gi\u00e1 tr\u1ecb ch\u00eanh l\u1ec7ch \u00e1p su\u1ea5t, ta s\u1eed d\u1ee5ng ph\u01b0\u01a1ng tr\u00ecnh Bernoulli v\u00e0 ph\u01b0\u01a1ng tr\u00ecnh li\u00ean t\u1ee5c:<\/p>\n

    \n
  1. \u00c1p su\u1ea5t t\u1ed5ng: P_t<\/sub> = Ps<\/sub> + (1\/2) * \u03c1 * v2<\/sup><\/li>\n
  2. \u00c1p su\u1ea5t t\u0129nh: P_s<\/sub> l\u00e0 \u00e1p su\u1ea5t c\u1ee7a ch\u1ea5t l\u1ecfng kh\u00f4ng ch\u1ecbu t\u00e1c \u0111\u1ed9ng b\u1edfi d\u00f2ng ch\u1ea3y<\/li>\n<\/ol>\n

    Trong \u0111\u00f3, \u03c1 l\u00e0 m\u1eadt \u0111\u1ed9 c\u1ee7a ch\u1ea5t l\u1ecfng ho\u1eb7c kh\u00ed, v l\u00e0 t\u1ed1c \u0111\u1ed9 d\u00f2ng ch\u1ea3y. T\u1eeb \u0111\u00e2y, t\u1ed1c \u0111\u1ed9 d\u00f2ng ch\u1ea3y v c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c t\u00ednh nh\u01b0 sau:<\/p>\n

    v = sqrt((2 * (Pt<\/sub> – Ps<\/sub>)) \/ \u03c1)<\/p>\n

    \u1ee8ng D\u1ee5ng C\u1ee7a \u1ed0ng Pitot<\/h2>\n
      \n
    • Trong h\u00e0ng kh\u00f4ng, \u1ed1ng Pitot \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 \u0111o t\u1ed1c \u0111\u1ed9 c\u1ee7a m\u00e1y bay so v\u1edbi kh\u00f4ng kh\u00ed xung quanh.<\/li>\n
    • Trong h\u1ec7 th\u1ed1ng \u0111i\u1ec1u h\u00f2a kh\u00f4ng kh\u00ed, \u1ed1ng Pitot gi\u00fap \u0111o t\u1ed1c \u0111\u1ed9 d\u00f2ng kh\u00ed trong c\u00e1c \u1ed1ng d\u1eabn.<\/li>\n
    • Trong c\u00f4ng nghi\u1ec7p d\u1ea7u kh\u00ed, \u1ed1ng Pitot \u0111o t\u1ed1c \u0111\u1ed9 d\u00f2ng ch\u1ea3y c\u1ee7a d\u1ea7u ho\u1eb7c kh\u00ed trong c\u00e1c \u0111\u01b0\u1eddng \u1ed1ng.<\/li>\n<\/ul>\n

      K\u1ebft Lu\u1eadn<\/h2>\n

      \u1ed0ng Pitot l\u00e0 m\u1ed9t c\u00f4ng c\u1ee5 \u0111\u01a1n gi\u1ea3n nh\u01b0ng m\u1ea1nh m\u1ebd trong l\u0129nh v\u1ef1c k\u1ef9 thu\u1eadt nhi\u1ec7t, gi\u00fap \u0111o t\u1ed1c \u0111\u1ed9 v\u00e0 l\u01b0u l\u01b0\u1ee3ng c\u1ee7a d\u00f2ng ch\u1ea3y m\u1ed9t c\u00e1ch ch\u00ednh x\u00e1c v\u00e0 \u0111\u00e1ng tin c\u1eady. Hi\u1ec3u r\u00f5 v\u1ec1 nguy\u00ean l\u00fd ho\u1ea1t \u0111\u1ed9ng v\u00e0 c\u00e1ch s\u1eed d\u1ee5ng \u1ed1ng Pitot c\u00f3 th\u1ec3 gi\u00fap c\u00e1c k\u1ef9 s\u01b0 v\u00e0 nh\u00e0 nghi\u00ean c\u1ee9u \u0111\u1ea1t \u0111\u01b0\u1ee3c nh\u1eefng k\u1ebft qu\u1ea3 quan tr\u1ecdng trong nhi\u1ec1u \u1ee9ng d\u1ee5ng kh\u00e1c nhau.<\/p>\n","protected":false},"excerpt":{"rendered":"

      C\u00e1ch \u1ed1ng pitot \u0111o t\u1ed1c \u0111\u1ed9 l\u01b0u l\u01b0\u1ee3ng: T\u00ecm hi\u1ec3u c\u00e1ch th\u1ee9c ho\u1ea1t \u0111\u1ed9ng c\u1ee7a \u1ed1ng pitot v\u00e0 vai tr\u00f2 c\u1ee7a n\u00f3 trong \u0111o l\u01b0\u1eddng t\u1ed1c \u0111\u1ed9 d\u00f2ng ch\u1ea3y trong c\u00e1c \u1ee9ng d\u1ee5ng k\u1ef9 thu\u1eadt.<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":[],"categories":[132],"tags":[],"yoast_head":"\nC\u00e1ch \u1ed1ng pitot \u0111o t\u1ed1c \u0111\u1ed9 l\u01b0u l\u01b0\u1ee3ng<\/title>\n<meta name=\"description\" content=\"C\u00e1ch \u1ed1ng pitot \u0111o t\u1ed1c \u0111\u1ed9 l\u01b0u l\u01b0\u1ee3ng: T\u00ecm hi\u1ec3u c\u00e1ch th\u1ee9c ho\u1ea1t \u0111\u1ed9ng c\u1ee7a \u1ed1ng pitot v\u00e0 vai tr\u00f2 c\u1ee7a n\u00f3 trong \u0111o l\u01b0\u1eddng t\u1ed1c \u0111\u1ed9 d\u00f2ng ch\u1ea3y trong c\u00e1c \u1ee9ng d\u1ee5ng k\u1ef9 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