Diseño y Medicion de Caudal Canaleta Parshall

8/20/2019 Diseño y Medicion de Caudal Canaleta Parshall

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DISEÑO Y MEDICION DE CAUDALDE UNA CANALETA PARSHALL

INTEGRANTES:

ARIAS RUIDIAZ PAUL KLEMENTBLANCO DURAN DAGOBERTO LUIS

QUINTERO ORTIZ RICHARD EDUARDO

DOCENTE:

Ing. LEONEL ROJAS

UNIVERSIDAD POPULAR DEL CESARFACULTAD DE INGENIERIAS Y TECNOLOGIA

INGENIERIA AMBIENTAL & SANITARIAVALLEDUPAR CESAR

!"#$


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INTRODUCCI%N

R'() P*+)'' ,-n*/0123 45 6n5* +/gn/7/,/8 ' ,6(- 45 ' /ng5n/5*9 45*/5g- ,-n 5' 45+**-''- 45 1n 4/+(-+//8- 45 654/,/3n 45 7'1- ;15 +5 )//n+*165n-+ 45*5g/+*- 7+5 45 g1 7-*4-* V5n1*/>. C-6=n65n5 5+-+ 7-*4-*5+ -,n'5+ +-n 1/'/


3/19

CANALETA PARSHALL

L ,n'5 P*+)'' 5+ 1n 5'565n- (*/6*/- 45 ,14' ,-n 1n 6('/ g6 45('/,,/-n5+ (* 654/* 5' ,14' 5n ,n'5+ 0/5*-+. P1545 +5* 1+4- (*654/* 5' 7'1- 5n *9-+ ,n'5+ 45 /**/g,/3n 2- 45 45+g5 +'/4+ 45 ',n*/''+

g1+ *5+/41'5+ 85*/4-+ 45 70*/,+ 5, L Cn'5 P*+)'' A*-n 5+70*/,4 ,-n (-'/(*-(/'5n- '- ;15 '5 (5*6/5 *5+/+/* 56(5*1*+ 45 )+ " '/*5 '/0*5 +/n 560*g- 5' g1 ;15 7'125 (-* ' ,n'5 n- (1545 5+* ,-ng5'4. A456+ ' Cn'5 P*+)'' (1545 *5+/+/* +-'1,/-n5+ 45 +'5+/n-*gn/,+ ,/4-+ 2 0+5+ ;15 n- (*5+5n5n 715*5+ (*-(/5445+ 45 -/4,/3n 21n ' ,-n,5n*,/3n 45 4/+-'85n5+ -*gn/,-+. E' 6- 6/6- 45 '-+ +3'/4-+5n +1+(5n+/3n n- (1545 +5* +1(5*/-* ' " 45 ' n,)1* 45' ,15''- 45 ',n'5.

VENTAJAS

• P5*4/4 45 5n5*g9 *5'/865n5 0 85,5+ /n75*/-* ;15 5n ,*5++

(*-n1n,/4+• P-, +5n+/0/'/44 ' 4/+*/01,/3n 45 85'-,/44 5n 5' ,n' 45 ,5*,6/5n-• M54/,/3n 45 ,14' /n,'1+- 5n ,-n4/,/-n5+ 45 /n1n44-• L 85'-,/44 45n*- 45 ' ,n'5 P*+)'' 5+ +17/,/5n565n5 ' (*

(*585n/* ' 45(-+/,/3n 45 +54/65n-+ - ' ,161',/3n 45 5+,-60*-+ M9n/6- *5;1/+/-+ 45 6n5n/6/5n-

• A6('/- *ng- 45 ,14'5+• L*g 8/4 =/'

DESVENTAJAS

• P* ' ,-n+*1,,/3n 45 5+ ,n'5 +5 (*5,/+ 45 ' 45,1,/3n 45 1n

+//- 45 45+,*g 44- ;15 5+5 4505 (-+55* 1n /n,'/n,/3n ;15 (5*6/ '7-*6,/3n 1n 7'1- ,*9/,- 5n ' g*gn 45 ' ,n'5.

• L-+ ,-+-+ 45 ,-n+*1,,/3n 45(5n45n 45 '+ ,*,5*9+/,+ 45 ' 45+,*g

44- ;15 5++ /n7'125n 5n 5' /(- 45 65*/' 45 ,-n+*1,,/3n ,-6- 5n '+4/65n+/-n5+ 45' 4/+5-.

FUNCIONAMIENTO DE LA CANALETA PARSHALL

S1 71n,/-n6/5n- 5+ 0+4- 5n ' +1n,/3n 45 ;15 5' 7'1- ,*//,- +5 (*-41,55+*5,)n4- ' n,)1* 45 ' g*gn 45 ' ,n'5 2 '58nn4- ' 0+5@ 5+5575,- -0'/g ' g1 5'58*+5 - *56n+*+5 (*-,5+- ;15 450/4- ',5'5*,/3n 45' 7'1- (5*6/5 5+0'5,5* 1n *5',/3n 656/, 5n*5 ' 5'58,/3n45' g1 2 5' g+-.


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MANUAL DE INSTALACI%N DE MEDIDORES DE FLUJO PARSHALL

ANTECEDENTES

E' ,n' P*+)'' 5+ 1n 5+*1,1* 6-'454 5n 1n +-' (/5V5n1*> 45 7'1- ,*9/,-.

P-* +1 (5n4/5n5 ),/ 0- /n85*/4 45 ' g*gn '5 (5*6/5 71n,/-n* 45,1465n5 5n *ng-+ 6+ '-+ g1+ 0- g1+ **/0 45' n/85'. E+ 5'6+ /n4/,4- (* 654/,/3n 45 7'1- 45 g1 5n g1+ ,'*+ g1+ *5+/41'5+ 2,n'5+ 45 */5g-.

REQUERIMIENTOS DE INSTALACION FISICA

Velocidad de llegada de la corriente

L+ 85'-,/445+ 65n-*5+ 45 ". 6+ 7,/'/n 5' ,*5,/6/5n- 45 6'5


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/n,'1/* 5' n,)- 45' ,n' '145+ (*-71n4/445+ 2 ' '1* 45 '-+ 0-*4-+ (-* g1+ **/0 ,-n 5+(5,/' 5n,/3n +1 ,(,/44 45 ,-n5n5* 5' /n,*565n- 45n/85' ,1+4- (-* ' /n+',/3n 45' 7-*4-*.

Erosión

I45'65n5 5' *6- +5'5,,/-n4- 45' ,n' 4505 +5* 5+0'5. En 'g1n-+ *6-+45' ,n' ' +54/65n,/3n -,1**5 41*n5 ' ?(-, 45 5+/5. L +54/65n,/3n(1545 ,60/* ' 85'-,/44 45' ,5*,6/5n- - (1545 /n,'1+- 5n5*** '5+*1,1* 2 ' 5*-+/3n (1545 +-,8* 5' ,/6/5n- 2 45+g+* 2 *-6(5* 5' P*+)''.D505 *58/+*+5 5' 5+n,6/5n- 45' g1 n5+ 45' 7-*4-*. Un 5+n,6/5n-5,5+/8- ,-6=n65n5 (*-8-, +54/65n,/3n 450/4- ' *541,,/3n 5n '+85'-,/445+ 45 ''5g4.

Trao recto ínio antes del Pars!all

Un 45 '+ (*/n,/('5+ *5+*/,,/-n5+ ;15 4505 5n5* 1n +//- 4-n45 +5 8 ,-'-,* 5' 654/4-* 5+ ' 1n/7-*6/44 45 ' ,-**/5n5. E+- +/gn/7/, ;15 n5+ 45' 654/4-* +5 4505 5n5* 1n *6- *5,- 2 +/n -0+,1'-+ 45 1n '-ng/14 69n/6. L-+-0+,1'-+ (1545n +5* /n,'1+/85 0n,-+ 45 *5n - 45 g*8 +5n4-+ 5n 5'7-n4- 45' ,n' ,-6- (*-41,- 45'


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FIG. 1

L-+ 7-*4-*5+ P*+)'')n +/4- 1+4-+,-6=n65n5 41*n561,)- /56(- 450/4- 5+5 1+- +5 '5 ) (-4/4-


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5+0'5,5* 654/4+ -(/6+ 45,15*4- '-+ ,14'5+ 6/6-+ 269n/6-+ ;15 5+-+ (14/5+5n +-(-**5+-+ ;15 8n 5n 71n,/3n 45' n,)- 45' g*gn 5' ,1' (-456-+

4/8/+* 5n ' +/g1/5n5 0' ,-n +1+,',1'-+ (*5455*6/n4-+ (* ,41n 45 '+ +5,,/-n5+ 45 ' )-n5*/-*.

TABLA 1


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DISEÑO DE UN CANAL PARSHALL

T5n/5n4- 5n ,15n '+ 4/65n+/-n5+ 2 (*55+0'5,/4+ 5n ' 0' # 4/+5*56-+1n ,n'5 P*+)'' (* 1n C14' M/6- 45 " L+ ". 6 +.

Y5n4- ' T0' # 455*6/n6-+ '+ 4/65n+/-n5+ (*55+0'5,/4+ (* ',n'5 -05n/5n4- (* ,4 +5,,/3n '-+ +/g1/5n5+ 8'-*5+.

".#$K"."M".D#.$!N".!"K"."C#.!!"G".#$

A (*/* 45 5+-+ (*-,5456-+ ,',1'* '-+ *5;15*/6/5n-+ 45 ' ,n'5:

# A'1* g1+ **/0 45 ' +5,,/3n 45 654/,/3n

H 0= K Q M =0.608∗(0.760)0.639=0.510metros

! An,)- 45 ' +5,,/3n 45 654/,/3n

D'

=2 ( D−W )+W

3 =2 (1.572−0.915 )+0.915

3 =1.048metros

V5'-,/44 5n ' +5,,/3n 45 654/,/3n

V 0=

Q

D' ∗ H 0

= 0.760

1.048∗0.510=1.42metros /segundos

C14' 5+(5,97/,- 5n ' g*gn

q= QW =0.7600.915

=0.83metros2/segundos

$ C*g H/4*1'/, D/+(-n/0'5


9/19

E0= H

0+ N +( V 0

2

2g )=0.510+0.230+[ (1.42 )2

2∗9.81 ]=0.84metros

C-+5n- 45

cosα = −q∗g

[( 2 g3 )∗ E0]1.5=

−0.83∗9.81

[(2∗9.813 )∗0.84]1.5=−0.63

V'-* 45 H5g5+/6'

α =cos−1(−0.63)=129 ° 3' 0.44

V5'-,/44 n5+ 45' *5+'-

129° 3' 0.44 } over {3} right )} =3.29 metros/segundos

¿¿

V 1=2√ 2 g∗ E0

3 ∗cos

α

3=

2√ 2∗9.81∗0.843

∗cos¿

A'1* 45' g1

H 1=

q

V 1

=0.83

3.29=0.25metros

#" N=65*- 45 F*-145 *ng- 45 ! .$

Nf = V

1

√ gH 1=

3.29

√ 9.81∗0.25=2.1

## A'1* 45' R5+'-

H 2=

H 1(√ 1+8 Nf

2−1)

2=0.25(√ 1+8∗(2.1)

2−1)2

=0.63metros

#! V5'-,/44 5n 5' *5+'-


10/19

V 2=

Q

W ∗ H 2

= 0.760

0.915∗0.63=1.32metros /segundos

# A'1* 5n ' +5,,/3n 45 +'/4 5n ' ,n'5

H 3= H 2−( N − K ' )=0.63−(0.23−0.08 )=0.48metros

# V5'-,/44 5n ' +5,,/3n 45 +'/4

V 3=

Q

C ∗ H 3

= 0.760

1.22∗0.48=1.30metros

#$ P?*4/4 45 ,*g 5n 5' *5+'-

H p=

H 0+

K ' −

H 3=

0.510

+0.08

−0.48

=0.11metros

# T/56(- 45 M5


11/19

=n/,65n5 45 ' ,*g H 45 ' 5n*4@ (5*- ,1n4- ' ,*g H0 457/5*5 (-,- 45' ,*g H +5 4/,5 ;15 5' 654/4-* *0 ,-n S165*+/3n 2 5n-n,5+ 5' g+- 5+

71n,/3n 45 '+ 4-+ ,*g+ H 2 H0. A ' *5',/3n = H!

H" +5 '5 ''6 'rado de

Suersión 2 5+ ' ;15 455*6/n +/ 5n 1n 6-65n- 44- 5' 654/4-* *0 ,-n45+,*g '/0*5 - ,-n +165*+/3n 5++ ,*,5*9+/,+ 45 5+,1**/6/5n- 5+n455*6/n4+ ,-n '-+ +/g1/5n5+ 8'-*5+ '96/5+:

TAMAÑO DEL MEDIDOR DESCARGA LIBRE CON SUMERSI%N

L+ /n85+/g,/-n5+ 45 P*+)'' 6-+**-n ;15 ,1n4- 5' g*4- 45 +165*+/3n 5+62-* 45 $ ' 455*6/n,/3n 45' g+- +5 815'85 612 /n,/5* 450/5n4-4-(*+5 (-* '- n- $ ,-6- 8'-* 6/6- 45 SUMERGENCIA.

$ESCAR'A L"(RE

L 5,1,/3n g5n5*' 5+ 44 (-* ' +/g1/5n5 5(*5+/3n:

TABLA !

Q= M ∗( H ")n

C14'.

: (*-71n4/44 45' g1 5n 1n 10/,,/3n 455*6/n4 45' 7-*4-*.

2 n: +-n 8'-*5+ 4/75*5n5+ (* ,4 6- 45 7-*4-*.


12/19

P*+)'' '-g*3 456-+** ;15 (* ,4 n,)- 45 ' g*gn +5 (-49455*6/n* 1n 71n,/3n 4/+/n 45 6 2 n ,-6- ,-n+n5+ +9 6/+6- 5'0-*373*61'+ 0+4+ 5n 5' n,)- 45 ' g*gn ,-6- *ng- =n/,- ' ,1' 5+ 5n71n,/3n 45 ' '1* 2 1n-+ 8'-*5+ ,-n+n5+ *5(*5+5n/8-+ 45 6 2 n. En '+/g1/5n5 0' (*5,/6-+ '+ 73*61'+ 45 C14' (* ,4 *ng- 45 5(*5+4 5n 65*-+ 2 (/5+.

TABLA

$ESCAR'A C#N S)*ERS"#N # AH#'A$A

Q= M ∗( H " )n−C


13/19

L 5,1,/3n g5n5*' 5+ 44 (-* ' +/g1/5n5 73*61':

D5 4-n45 C 5+ 1n 7,-* 45 ,-**5,,/3n -05n/4- (*/* 45 '+ +/g1/5n5+ 73*61'+01'4+ 45 ,15*4- ' n,)- 45 ' g*gn. E' (*-,54/6/5n- 45' ,',1'- 45',14' +5 ),5 45 ' 6/+6 7-*6 ;15 5n 45+,*g '/0*5 n +3'- )2 ;15 *5+*

5+5 ,-57/,/5n5.

E+-+ 7,-*5+ 8n '/g4-+ ;15 ,1n4- +5 *0 ,-n 45+,*g )-g4 5',-,/5n5 5n*5 '+ '1*+ 45 '+ ,-+ 45 '6/n 45 g1 n5+ 2 45+(1?+ 45 'g*gn (5*,5(/0'565n5 n- (*5+5nn 4/75*5n,/ 'g1n 450/4- ' g*n6gn/14 ;15 (14/5+5 5+* *n+(-*n4- 5n ,14' 5' ,n'55 (-* 5+- P*+)''56/n3 5+5 (*-0'56 2 455*6/n- 575,/865n5 5+-+ ,-57/,/5n5+ 45,-**5,,/3n ;15 ,5n=n 5' ,14' ;15 5n +9 +/ +5 5+ *n+(-*n4-.

EJERCICIOS DE DESCARGA LIBRE.


14/19

#. D55*6/n5 5' g+- (* 1n 7-*4-* (*+)'' ;15 /5n5 1n n,)- 45g*gn 45 $". 66 2 1n (*-71n4/44 45 #"" 66

Q= M ∗( H ")n

D-+W =50.8mm H "=100mm

E' 55*,/,/- +5 5n,15n* 45+,*g '/0*5 2 45 ,15*4- ' 5,1,/3n 45056-+

01+,* '-+ 8'-*5+ 45 M # n 5n ' 0' *5+(5,/8.

M =0002702

n=155

S5 *56('


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2.50−15.00 (2.293W +0.474) ( H ")1.6

B+n4-+5 5n ' 7-*61' +5 *556('


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C-6- 5' g*4- 45 +165*g5n,/ +5 5n,15n* 5n 5' /n5*8'- 45 ". ".$+5 4/,5 ;15 5+ +165*+/3n (-* '- n- +5 *5+15'85 (-* 45+,*g)-g4 450/4- 5+- +5 /5n5 ;15 *5'/


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Q= M ∗( H " )n−C

Q=14.45∗(1.50 )1.60−3.10

Q=27.64−3.10

Q=24.54 m

3

s

C#NCL)S"#N

E' ,',1'- (* 5' (*-25,- 5 /n+',/3n 45 1n 654/4-* P*+)'' +5 *541,5=n/,65n5 ,-6(** ' *5',/3n 45' (* 45 8'-*5+. T6- 2 (?*4/4 45

,*g ( ,-**5+(-n4/5n5 ;15 /5n5n '1g* 5n 4/75*5n5+ 6-+ 45 654/4-*5+,-n 5' -05- 45 5+,-g5* ;15' ;15 (*5+5n5 62-*5+ 85n+. E' 015n71n,/-n6/5n- 45 ' 5+*1,1* n- +3'- 45(5n45 45 1n 6- 45,14- +/n-60/?n 45 1n ,-**5, /n+',/3n 2 (* 5''- 5+ n5,5+*/- ,-n-,5* 45n56n- ' (?*4/4 45 ,*g ;15 -*/g/n ' 5+*1,1* (* 4-(* 1n ,-**5,5'58,/3n 45 ' ,*5+ +-0*5 ' ('n/'' 45' ,n' (15+ +5 ,-**5 5' */5+g- 45,-'-,* 5' 654/4-* 456+/4- 0- ),/5n4- ;15 =n (* g+-+ (5;15-+*05 ,-n +165*+/3n - 0/5n 456+/4- '- ,-n '- ,1' 456+ 45 5'58* /nn5,5+*/65n5 5' /*n5 g1+ **/0 45' 654/4-* +5 165n 5,5+/865n5' 85'-,/44 5n ' +'/4 ;15 (1545 ,1+* 5*-+/-n5+ 5n 5' ,n'.


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("(L"#'RA,"A

S//-+ 50 45 C-n+1':

http://arkon.co.uk/spa/products/parshall-fumes

http://www.esa.com.m/productos/med!dores-parshall/manual-de-!nstalac!on-

de-med!dores-de-fu"o-parshall.html

http://www.ps!.#o$.pe/docs/%&'$!$l!oteca%&'manuales

%&'cal!$rac!on(estructuras.pd)

http://es.sl!deshare.net/ra)ada*!mende+/canaleta-parshall

http://h!draul!ca.um!ch.m/la$orator!o/!ma#es/man(pd)/,o/,(p.pd)

L/0*-+ 45 C-n+1':

HIDRAULICA DE CANALES P54*- R-4*9g15< R1/<

MANUAL DE HIDRAULICA A,5854-

HIDRAULICA II V5n T5 C)-[


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Diseño y Medicion de Caudal Canaleta Parshall

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