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B/ZDirective technical document of Harbin Turbine Company

Limited

B/Z58.422010

Technical principles for turbine rotor high-speed dynamic

balancing

2010-05-01! 2010-05-01"#

Issued on ay 1! 2010 Implemented on ay 1! 2010

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!

Issued by Harbin Turbine Company Limited

B/Z58.422010

"reface

#$%5&'(2)200*!"#

$%&'()

This standard is revised accordin+ to #$%5&'(2-200*,Technical

principle for turbine rotor hi+h-speed dynamic balancin+'

*+,-3 #$%5&'(2)200*)

This standard substitutes #$%5&'(2-200* be+innin+ from the date ofimplementation'

679:;

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B/Z58.422010

Technical principle for turbine rotor hi+h-speed dynamic

balancin+

1 [

3cope

\W]^A_`$%(abcD`def

g850H4 h 90H4:ijikilimn

A(op)

This standard specifies the process re;uirements for hi+h-speeddynamic balancin+ test at room temperature of rotors ith +ravity centerithin supportin+ span for stationary steam turbine 850H4 and

90H4:industrial steam turbine! semi-speed steam turbine! fan! and marine

turbines in hi+h-speed dynamic balancin+ test chamber'

qrs^A_`$%(abcD`de(

fg850H4 h 90H4:ijikilimn

(A)

This standard is applicable to hi+h-speed dynamic balancin+ test atroom temperature of rotors ith +ravity center ithin supportin+ span for

stationary steam turbine 850H4 and 90H4:industrial steam turbine! semi-

speed steam turbine! fan! and marine turbines in hi+h-speed dynamicbalancin+ test chamber'

2 \turvw

6pplicable documents

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The folloin+ documents shall form an inte+ral part of this standard tothe e

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+ood state aitin+ for operation' The drain+s used for the rotor aitin+for balance shall be complete'

A'2 $A_op\W

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6ll values shall satisfy the re;uirements of drain+ and the relevantprovisions and acceptable certificate shall be +iven before the rotorenterin+ the test chamber to do balancin+' 6nd or/piece shall be chec/edhether it meet the folloin+ balancin+ re;uirement.

2

B/Z58.422010

aDT (b@^bs(

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6ny rotor is not alloed to operate in the condition ith temperature undernon-tou+hness transition temperature DT of rotor material' Thisre;uirement has special meanin+ for cold season 8especial for H"$I" rotorsof steam turbine:'

bbs 15(_$A_"^

900rpm -^ 20 20Cx\W

bop)

If the rotor ust +ets into test chamber from outside ith temperature belo15 ! it should rotate to speed at least 900 rpm and stay indoor ithtemperature 20EC or above at least for specified hours to meet the

re;uirement for rotor temperature'

_b out temperature stop time

* 2(-1 A&-1& 52

cno>

?(n)

Chec/ hether there is any e

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there shall be ;uality problems on rotor! there shall be defect sheets! but the;uality defects at the /ey positions is forbidden! such as burrs on shaft

ournal! etc'

d)Chec/ for the complete fi

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passa+e of H" oil shall be cleaned ith H" forced ind to avoid shaftabrasion based on the actual situation'

('2 3@

e bearin+.

('2'1DED3@+rlF0-. 2GA

Circular and elliptical bearin+. >irstly it shall be cleaned ith H"forced ind to blo! and then the ac/in+ oil can be put into runnin+ forto to three times'

('2'2 HI3@+rlF0J.K.KLMNirstly it shall be cleaned ith H" forced ind toblo! and then ma/e the oil circulatin+! and the time shall be determined by

(

B/Z58.422010

the strainer conditions! and if the strainer pressure decreases! strainer shallbe cleaned! and meanhile the circulatin+ time for fillin+ the oil shall bee

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#efore liftin+ the rotor! chec/ the different adustment positions andplatform trailer! and carefully clean the rotor ournal surface and bearin+or/in+ surface in compliance ith #$T(05& standard! to ensure there isno residual metal flash! burrs! eldin+ sla+! +rease and rust at the rotor

ournal and the blade shroud! place the rotor on pedestal bearin+ ithattention to the rotation direction! and try best to ma/e it in consistenceith its on rotation direction of rotor'

9 {|i3in(5

Installation for the pedestal! bearin+ and connection collar

9'1 5op$%'

The rotor shall be installed strictly accordin+ to the dynamic balancin+5

B/Z58.422010

process re;uirements'

9'2I.@I-op.q#)

Clearance beteen bearin+ pad and oil retainin+ rin+. it must+uarantee the re;uirements for the clearance at the top of bearin+ pad! andthe clearance of oil retainin+ rin+ shall be ade;uate'

9'A 2( 0'05 mm

cc^ 1+ `)

for the rotor hich need to be installed ith connection collar! the run-out of this rotor should no more then 0'05 mm! and connection scre must

be ei+hted! and ei+ht difference shall be ithin 1+'

* 5(\T

Inspection after rotor installation

*'1 (5^67op-`|.ig\T_h

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The installation at all positions shall satisfy the technicalre;uirements! throu+h oil fillin+ and manual turnin+ chec/ to confirm noscrapin+ and oil lea/a+e! and close operator access door after confirmin+nobody in shell as ell as sitch off li+ht in chamber and poer of lift! and+et ready to startup'

*'2\Ti.i.iii92

i-.n%ilOi.

iibn:s)

Bvery system of e;uipment 8ater system! oil system! oil vapore

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#$%(('5-200&

Turbine rotor hi+h-speed dynamic balancin+

I3@ 1?(0-1.200A topechanical vibration-#alance ;ualityre;uirements for rotors in a constant 8ri+id:state

I3@ 11A(2.1??& t(h"

echanical vibration-ethods and criteria forthe mechanical balancin+ of fle

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?0 (c 90 Ks A2

W( ? 9Ks A9W(

10 *Ks (&W( 12

&

A0-(0 of first critical speed of rotor shall be re+arded as lo speedbalancin+ speed' the rotor shall be operated at lo speed for a certain timeuntil the vibration amplitude value chan+es little' If the residual unbalanceei+ht of both plane 1 and plane 2 are about A00 + separately! andei+htin+ for lo speed balancin+ is not re;uired and record the data then

stop the machine' @therise! it shall e

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%)

#alancin+ beforefirst critical speed. normally! 100J200r$min before firstcritical speed is as balancin+ speed! if it meet re;uirements in &'A! ne

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Ko3(KW)

The steam turbine ith capacity of A00F or above. the bearin+vibration and absolute vibration of shaft can be measured at same time!

based on re;uirement! the bearin+ vibration or absolute vibration of shaftcan be evaluation standard'

K@ K#1'&mm$sKC2'&mm$s

KC@K#2'5mm$sKC2'&mm$s

^:(K@

6p-p0'05mm

'( 6p-p0'10mm

A00F

L" rotor. K#1'&mm$sKC2'&mm$s

H" rotor. K#2'5mm$sKC2'&mm$s

Fhen absolute bearin+ is measured at bearin+ ournal! the alloableunbalance vibration is .

6t rate speed. 6p-p0'05mm6t critical speed. 6p-p0'10mm

?'*$A

@verspeed test

Ksh^!or assembled rotor and L" rotor! under some condition! theoverspeed test shall be done firstly and then balancin+ test under certainspeed to +et stable data and reduce balancin+ cycle'

$W( 112-120^

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115-120W([`* 115

W 120WK$} 10)

90H4 $ W ( 112 $}

115)

10

B/Z58.422010

@verspeed is 112-120 of rated speed! under any condition! thespeed of rotor shall not be alloed to e

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?'5 ?'9 z%op)

#efore overspeed! if the vibration durin+ speed up and of rated speedis acceptable! then decrease the speed to rated after overspeed! and holdstable runnin+ for 1min! and the record data! shutdon' If there is one itemof vibration is not acceptable before over speed and rated speed! and thevibration data after overspeed and durin+ speed decreased to rated isacceptable! and re-speed up to rated speed hen the speed decreased to500rpm! if all vibration data is acceptable! that means rotor balancin+complete' If one of the vibration data before overspeed and rated is notacceptable! and it is still not acceptable after overspeed until speeddecreases to 4ero! clause ?'5 and ?'9 shall be folloed until the re;uirement

11

B/Z58.422010

is met'

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3peed don and shutdon

_h)*W)!ohi)

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Fhen rotor balancin+ is not acceptable! it is necessary to adust balanceei+ht! after speed decreases to 4ero! or/in+ condition shall be adustedto release vacuum in the chamber'

10 (A(f9

Loc/in+ of balance ei+ht and 3ettlement of test data

10'1 (

Loc/in+ of balance ei+ht

_h(67C(%op

|#\T)

#e sure that the balance ei+ht on rotor is same as in record! and loc/balance ei+ht accordin+ to re;uirement of drain+! and inform the shiftresponsible person after the ei+ht is loc/ed'

12

B/Z58.422010

10'2f9AAA

2V>?8897#:') To settle the test data and dia+ram! and fill the test report! the test reportcan come into effective after si+nature of related personnel and departmentseal 8see 6ppendi< #:! and /eep them in archive'

11

Dismantle rotor

.

To release the balancin+ state and note the folloin+s hiledismantlin+ rotor'

d`3$.

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>ield cleanin+ and rotor delivery inspection

12'1 9i{|i3i.n)

To clean chamber! pedestal! bearin+ and oil retainin+ rin+! etc'

12'2`f)

To shut off all poer in the chamber! and close the door'

12'A,A)

To submit the rotor and test reports to related department for inspection'6ll balancin+ procedures end'

1A r

sa+e and aintenance of B;uipments

ihi%K~5

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The operators shall be ac;uainted to Three MoodsN and >ourCapabilitiesN! and carefully conduct or/! and ta/e responsibilities for fieldand e;uipment safety'

1A

B/Z58.422010

976 86ppendi< 6:

V8Harbin Turbine Company! Ltd':

567op67

Technical e;uirements and ecords for Installation of otor 8hi+h speed balancin+:

otor description 3Drain+ o'

Heat o' ob o'

Connection end of rotor !]!5niversal oint o'g"#3pan of platform trailer

3 #earin+ I II

. @il retainin+ rin+ 1 A

2 (

$W

3et value

I $W

3et value

II

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3

V

pper cover of bearin+

+mm

easured value

I +mm

easured value

II

@perator @perator

1 2 A (!]

niversal

oint

I II

{|%&5

"edestal anchor erector

I II

{|.5"edestal oil pipe erector

I II

Connection dis/

un out g\T

#arrin+ inspection5Brector

emar/s

"rocess ' Chief director

1(

B/Z58.422010

97# 86ppendi< #:

V8Harbin Turbine Company! Ltd':

A

Test report for the dynamic balancin+ of rotor

(

"roduct description

otor

description

3

Drain+ o'

ob o'

Heat o'

A

Test date

6 7 8Technical data :

#alance speed

$

@verspeed

$

@verspeed time

%&'(

Calculation of first critical

speed

r$min +%&'(

easurement of first critical

speed

r$min

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A 8Hi+h-speed dynamic balancin+ test:

x3

6lloable value of bearin+ vibration at or/in+ speed

O mm$s

x3nesidual value of bearin+ vibration at or/in+ speed

I. mm$s . mm$s

%&'(3

6lloable value of first critical bearin+ vibration

O mm$s

%&'(3n

esidual value of first critical bearin+ vibration

I. mm$s . mm$s

2 c