![\"\u0110\u1ed3ng](\"https:\/\/www.thermal-engineering.org\/wp-content\/uploads\/2024\/07\/dong_ho_do_venturi_nguyen_ly_cac_loai_toc_do_dong_chay.png\")
<\/p>\n\u0110\u1ed3ng H\u1ed3 \u0110o Venturi l\u00e0 thi\u1ebft b\u1ecb \u0111o t\u1ed1c \u0111\u1ed9 d\u00f2ng ch\u1ea3y d\u1ef1a tr\u00ean nguy\u00ean l\u00fd Venturi, v\u1edbi c\u00e1c lo\u1ea1i v\u00e0 \u1ee9ng d\u1ee5ng kh\u00e1c nhau trong k\u1ef9 thu\u1eadt nhi\u1ec7t.<\/p>\n
<\/p>\n
\u0110\u1ed3ng h\u1ed3 \u0111o Venturi l\u00e0 m\u1ed9t thi\u1ebft b\u1ecb th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong l\u0129nh v\u1ef1c k\u1ef9 thu\u1eadt nhi\u1ec7t \u0111\u1ec3 \u0111o t\u1ed1c \u0111\u1ed9 d\u00f2ng ch\u1ea3y c\u1ee7a ch\u1ea5t l\u1ecfng ho\u1eb7c kh\u00ed. Thi\u1ebft k\u1ebf c\u1ee7a \u0111\u1ed3ng h\u1ed3 \u0111o n\u00e0y d\u1ef1a tr\u00ean nguy\u00ean l\u00fd c\u1ee7a \u1ed1ng Venturi, m\u1ed9t ph\u00e1t minh n\u1ed5i ti\u1ebfng trong v\u1eadt l\u00fd l\u01b0u ch\u1ea5t. B\u00e0i vi\u1ebft n\u00e0y s\u1ebd tr\u00ecnh b\u00e0y nguy\u00ean l\u00fd ho\u1ea1t \u0111\u1ed9ng, c\u00e1c lo\u1ea1i \u0111\u1ed3ng h\u1ed3 \u0111o Venturi v\u00e0 c\u00e1ch t\u00ednh to\u00e1n t\u1ed1c \u0111\u1ed9 d\u00f2ng ch\u1ea3y.<\/p>\n
\u0110\u1ed3ng h\u1ed3 \u0111o Venturi ho\u1ea1t \u0111\u1ed9ng d\u1ef1a tr\u00ean nguy\u00ean l\u00fd Bernoulli<\/em>, m\u1ed9t nguy\u00ean l\u00fd c\u01a1 b\u1ea3n trong \u0111\u1ed9ng l\u1ef1c h\u1ecdc l\u01b0u ch\u1ea5t. Nguy\u00ean l\u00fd n\u00e0y cho bi\u1ebft r\u1eb1ng t\u1ed5ng \u00e1p su\u1ea5t t\u0129nh, \u00e1p su\u1ea5t \u0111\u1ed9ng v\u00e0 tr\u1ecdng l\u1ef1c trong m\u1ed9t d\u00f2ng ch\u1ea3y kh\u00f4ng \u0111\u1ed5i \u1edf c\u00e1c \u0111i\u1ec3m kh\u00e1c nhau trong d\u00f2ng ch\u1ea3y \u0111\u00f3 l\u00e0 kh\u00f4ng \u0111\u1ed5i. C\u00f4ng th\u1ee9c Bernoulli c\u00f3 th\u1ec3 vi\u1ebft d\u01b0\u1edbi d\u1ea1ng:<\/p>\n \\[ P + \\frac{1}{2} \\rho v^2 + \\rho gh = \\text{const} \\]\n Trong \u0111\u00f3:<\/p>\n <\/u1><\/p>\n \u0110\u1ed3ng h\u1ed3 \u0111o Venturi c\u00f3 nhi\u1ec1u lo\u1ea1i kh\u00e1c nhau \u0111\u1ec3 ph\u00f9 h\u1ee3p v\u1edbi nhi\u1ec1u \u1ee9ng d\u1ee5ng v\u00e0 y\u00eau c\u1ea7u k\u1ef9 thu\u1eadt. D\u01b0\u1edbi \u0111\u00e2y l\u00e0 m\u1ed9t s\u1ed1 lo\u1ea1i ph\u1ed5 bi\u1ebfn:<\/p>\n <\/u1><\/p>\n T\u00ednh to\u00e1n t\u1ed1c \u0111\u1ed9 d\u00f2ng ch\u1ea3y qua \u0111\u1ed3ng h\u1ed3 \u0111o Venturi d\u1ef1a tr\u00ean vi\u1ec7c \u0111o ch\u00eanh l\u1ec7ch \u00e1p su\u1ea5t gi\u1eefa \u0111o\u1ea1n \u1ed1ng th\u1eaft v\u00e0 \u0111o\u1ea1n \u1ed1ng m\u1edf r\u1ed9ng. C\u00f4ng th\u1ee9c t\u00ednh t\u1ed1c \u0111\u1ed9 d\u00f2ng ch\u1ea3y (v) c\u00f3 th\u1ec3 bi\u1ec3u di\u1ec5n nh\u01b0 sau:<\/p>\n \\[ v = \\sqrt{ \\frac{2(\\Delta P)}{\\rho \\left( 1 – ( \\frac{A_2}{A_1} )^2 \\right) } } \\]\n Trong \u0111\u00f3:<\/p>\n <\/u1><\/p>\n \u0110\u00e2y l\u00e0 m\u1ed9t trong nh\u1eefng \u1ee9ng d\u1ee5ng c\u1ee7a \u0111\u1ed3ng h\u1ed3 \u0111o Venturi \u0111\u1ec3 ki\u1ec3m so\u00e1t v\u00e0 qu\u1ea3n l\u00fd h\u1ec7 th\u1ed1ng d\u00f2ng ch\u1ea3y trong c\u00e1c ng\u00e0nh c\u00f4ng nghi\u1ec7p nh\u01b0 d\u1ea7u kh\u00ed, h\u00f3a ch\u1ea5t v\u00e0 cung c\u1ea5p n\u01b0\u1edbc.<\/p>\n \u0110\u1ed3ng h\u1ed3 \u0111o Venturi, v\u1edbi nguy\u00ean l\u00fd ho\u1ea1t \u0111\u1ed9ng d\u1ef1a tr\u00ean nguy\u00ean l\u00fd Bernoulli, l\u00e0 m\u1ed9t c\u00f4ng c\u1ee5 \u0111o l\u01b0\u1eddng quan tr\u1ecdng v\u00e0 ph\u1ed5 bi\u1ebfn trong l\u0129nh v\u1ef1c k\u1ef9 thu\u1eadt nhi\u1ec7t. Hi\u1ec3u r\u00f5 nguy\u00ean l\u00fd v\u00e0 c\u00e1ch \u1ee9ng d\u1ee5ng c\u1ee7a n\u00f3 s\u1ebd gi\u00fap c\u00e1c k\u1ef9 s\u01b0 v\u00e0 chuy\u00ean gia t\u1ed1i \u01b0u h\u00f3a h\u1ec7 th\u1ed1ng v\u00e0 qu\u1ea3n l\u00fd t\u00e0i nguy\u00ean hi\u1ec7u qu\u1ea3 h\u01a1n.<\/p>\n","protected":false},"excerpt":{"rendered":" \u0110\u1ed3ng H\u1ed3 \u0110o Venturi l\u00e0 thi\u1ebft b\u1ecb \u0111o t\u1ed1c \u0111\u1ed9 d\u00f2ng ch\u1ea3y d\u1ef1a tr\u00ean nguy\u00ean l\u00fd Venturi, v\u1edbi c\u00e1c lo\u1ea1i v\u00e0 \u1ee9ng d\u1ee5ng kh\u00e1c nhau trong k\u1ef9 thu\u1eadt nhi\u1ec7t.<\/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\u00e1c Lo\u1ea1i \u0110\u1ed3ng H\u1ed3 \u0110o Venturi<\/h2>\n
T\u1ed1c \u0110\u1ed9 D\u00f2ng Ch\u1ea3y<\/h2>\n
K\u1ebft Lu\u1eadn<\/h2>\n