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  8BHAU E04H 20060101A Ll 20060

 12/08 6BHAU 30 (21)

 Application No: 2006200834

  (22)

  Application Date:

 2006.02.27 (30)

 Priority Data

  (31)

 Number (32) Date

 10 2005 009 592.2 2005.02.28 (33)

 Country

 DE

  (43)

 Publication Date:

  2006.09.14

  (43)

 Publication Journal Date: 2006.09.14

  (71)

 Applicant(s)

 (19)

 AUSTRA Ll AN PATENT OFFICE (11) Application

 No.

 AU 2006200834 A 1

 (54) Title

 Fast assembly

 meth 口 d f 口 r large

 steam

 generat 口 rs

  (51) 6 International

 Patent Classification( s)

 E04 日 1 /1 9

 (2006.01)

  20060101A Ll 2006030

 E04H 12/08 (2006.01) 8BHAU F22B F22 日 37/00 (2006.01) 37/00

 F22 日 37/24 (2006.01) 2 060101ALI 00 030

 E04B 1/19 . 6BHAU F22B 20060101AFI2006030

  37/24

 Alstom

 Technol 口 gy

 Lt d

  (72) Inventor(s)

 Gartne r_ R 口 I f; Heidrich , Jurgen

  (74) AgentlAttorney

 Watermark Patent & Trademark

 Attorneys , The Glassh 口 use 290 日 u 附口口 d R 口 ad , Ha w1 h 口 rn ,

 VI 巳 3122

 -2-

  " e ) b n o d i s n "工 £L o a,←」 m a 2 L U 8 n , V 4 i飞 ·工 、1 2 J ( t 0 P L a 口 r · ­ u a μ m s s a

 口 P - e e s b a q d e q d r a 1 4

 S ←M

 I - - e V 晴 》A · m m r e E L a ←l w p h u n r 俨 E晶 。h

 s l S a ) x 晴 c c ·『/ d s q】

 m -" r b a E J P‘

 回i 寸m ∞C C N A V C O N A V C C N A O L 卜N

 Abstract

 For

  the

  rational

  erection

  of

  large

  steam

  generators

 (1) , a

 boiler

 structural

 steelwork

 (2) 1S

 first

 erected

 with

 an

 outer

 roof

 section

 (7) , which

 includes

  a

 ma1n

 beams

 (7a

 to 7c) . At

 least

 。口 e , e. g.

 (7b) ,

 to

 be

 erected.

 When

 the main

 beams

 (7a

 to assembled , the

 erection of

 the

 upper

 boiler

 wall

 commences , whereby

 the

 corresponding parts

 are

 lifted

 between

 the

 ma1口

 beams

 (7a

 to

 7c) from

  above

 into

 the

 boiler

 structural

 steelwork

 and

 positioned.

 The

 erection

 of

  the

 inner boiler

 structural

 steelwork

 roof

 (8) ,

 工 n one

 p1ece

 or divided

 into

 roof

 modules

 suspe 口 ded beneath

 工 ts

 subsequent

 installation

 the

 space

 bounded

 by the

 boiler

 columns

 begins

 immediately.

 Internal

 components

 are

 fixed to

 the

 roof

 modules

 (8a , 8b) .

 The

 construction

 unit

 thus

 erected 1S

 raised

 upwards all in

  one

  piece or

 roof

 module

 by roof

 module

 and

 assembled between

 the main

 beams

 (7a , 7b , 7c)

 or

 be 口eath

 the

 same.

 The

 production

 method

 proposed in

 this

 regard

 a further

 shortening of

 the

 co 口 struction

 times

 steam

 generators , in

  particular when their gas cross-section which exceeds the dimensions

  (Fig.

 1)

 -3-

  寸m∞C C N。C O N 。C C N A O L 卜N

 1/8

  7c

  /1

 9

 19a

  5

  Fig.

 "1

 -4

  寸m ∞C C N。C O N A V C C N A O L 卜N

  AUSTRA Ll A

  Patents Act

 1990

 P ∞ 1

 Section 29

 Regulation 3.2(2)

 COMPLETE SPECIFICATION

 STANDARD PATENT

 Application Number:

  Lodged:

 Invention Title:

 Fast assembly method for large steam generators

  The following statement is a full description of this invention , including the best method of

 performing it known to us:

 -5

  s

 · s d k e r d o -- -w v

 」 a ←l ← α d- n n q de -- - n r o p p u m o q d c

 口 v 1 4 e 0 r e p t s 喃 d 口 a q】

 I o t a z e m g - 1 d n a t s 1中 a n r e t n - l S E e rM a e h r s e - L P -

 地 h 在L e m s W 卡E 口 e 口 u r o s - - - 『! ­

 a w p‘ e m l o- ­ c o h u u u

 d e n - - d r e n -- -‘h

 ←L

 V a o r a b d e m r O A + L n 0 4 i e 1 4 f -­

 O G J e ←I M

 n d 主 e 咽。

 e p‘ e q de r r c e a x h L e w " l

 " l t s a t e u h o " "工 ‘d

 s 1 4 n s · l · - o o k p b 寸m ∞C C N。C O N A V C C N A O L 卜N

 FAST

  ASSEMBLY

  METHOD

  FOR

  LARGE

  STEAM

  GENERATORS

 The

 lnvention

 relates

 to

 an

 assembly

 method

 for

 the

 fast

 erection of

 ge 口 erator.

 steam

 generators

 and a

 corresponding

 steam

  steam ge 口 erators are designed nowadays

 almost without

 as

  tube-wall steam generators , the

 boiler

 wall

 工 S or

 vertically arranged

 tubes

 con 口ected

 to 。口e

 The

 boiler

 wall

  surrounds

 a

 pass , for

 example

 工 n

 the

 form

 of

 a

 duct

  Arranged

 口 the

 upper

 part

 thereof

 are

 such

 as economlsers , reheaters ,

 other

 surfaces.

 The

 boiler

 provided

 on its

 with

 buckstays

 and

 wall

 boxes , which

 include

 headers

 arra 口 ged

 on

 cross-bars.

 The

 lower

 end

 of

 the boiler

 wall

 is followed

 by

 a

 boiler

 hopper , which

 hangs

 over

 a

 so-

 called

 boiler

 floor. The whole boiler , to

 which

 the

 aforementioned

 elements

 belong , 工 S

 arranged

 suspended

 工 n a

 boiler

 structural

 steelwork.

 The

 boiler

 structural

 steelwork

 stands

 on

 a

 base

 bordering

 the

 boiler

 floor

 and

 has

 several

 boiler

 columns

 braced together

 by mea 口 S of

 cross-bars

 and

 bracings , said

 boiler

 columns

 carrylng a

 boiler

 structural

 steelwork

 roof.

 The

 boiler

 structural

 steelwork

 roof

 carries the boiler , which

 is provided

 with a

 boiler

 roof

 at the

 top

 beneath

 the

 boiler

 structural

 steelwork

 roof.

 For

 the

 fast

 erectio 口 of

 larger

 stea盯 l

 of this

 DE

  100

  14

 758

 C2

  proposes

 a

 which

 makes it

 to erect

 simultaneously

 the

 upper

 part of

 the

 wall

 and

 the

 internal

 to be

 there.

 For

 this

 purpose , the

 structural

 roof

 lS divided

 into

 a 口

 outer

 roof

 section

 and

 into

  an

 lnner

 roof

 section.

 The

 boiler

 structural

 steelwork 工 S first

 erected

 with

 the

 outer

 roof

 section.

 The

 latter

 lS

 designed ln

 such

 a

 way

 that

 it offers

 access

 from above

 to

 -6

  V 4 V d

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 ∞ - l + L r a p -

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 r o h t o f e ←L a r e n e - i V J

 Z b e h t e 卡w

 s t e q d h d e s o -- - c n e s t 口 e n o t · - n d 1 4 a z u +」 c u z W q h 仨L d 『上 - l u h u e h t . 、4 W 呻 ∞ F M q u t q n n e - L n d 卡I S o u p‘ 、4 m c O R C - L 寸m ∞C C N A V C O N A V C C N A O L 卜N 2

  the

 volume

 boiler

 structural

 steelwork.

 By

 mea 口 S

  of

 a

 crane ,

 parts

 for

 the

 erection

 of

 the

 boile 工

 wall , J. n

 particular

 the

 upper

 boiler

 wa11 , can

 be

 1ifted

 J. n

 froπ1

 above

 through

 an

 openi 口q

 1eft

 J. n

 the

 outer

 roof

 section.

 This

 enables

 the

 assembly

 of

 the

 upper

 boiler

 wa11

 by

 means

  of

  a

  suitab1y

 1arge

 crane.

 At

  the

 same

 time ,

 there

 can

 be

 erected

 on

 the

 boi1er

 f1oor , or

 just

 above

 the

 latter , the

 口ner

 roof

 section of

 the

 boiler

 structural

 stee1work

 roof.

 The

 1atter

 J. s

 he1d

 for

 examp1e

 by

  traction

 ropes , the

 hoisting systems

 whereof

 are

 anchored

 J. n

 the

 boi1er

 structura1

 stee1work , e.g.

 to

 the

 outer

 roof

 section

 of the

 boi1er

 structura1

 stee1work

 roof.

 The

 口 ecessary

 interna1

 are

  now erected beneath the

 J. nner

 roof

 section

 boi1er

 structura1

 stee1work

 roof ,

 the

 J. nner

 boi1er

 structura1

 stee1work

 roof

 can

 be

 raised

 step

 by

 step.

 The

 assemb1y

 of

 the

 upper

 wal1

 and

 the

 assembly

 of

 the

 interna1

 components

 thus

 run

 J. n

 para11e1

 J. n

 ter 盯 lS of

 timing.

 Because

 both

 assembly

 procedures

 are

 工 n

 each

 case

 very

 time-intensive , a

 large

 amount

 of

 time

 can

 thus

 be

 the

 para11e1

 assembly.

 When

 upper

 boi1er

 wa11

 interna1

 are

 each

 completed , the

 internal

 components

 the

 J. n 口er

 boi1er structura1

 stee1work

 roof

 are

 taken upwards

 point.

 and

 fixed

 and

 connected

 at

 their

 insta11ation

  This

 method

 has

 been

 tried

 and

 tested

 for

 the

 erection

  of

 1arger

 steam

 It does

 however

 have

 its

 1imitations

 1arge

 steam

 ge 口 erators , the

 boiler

 roof

  whereof

 has

 at

 least

 one ,

 but

 preferab1y

 a p1ura1ity

 of

 undivided

 main

 beams

 the

 gas

 pass.

  The

 prob1em

 of

 the

 invention

 工 S

 to

 provide

 a

 method

 and

 a

 steam

 generator

 which

 a1so

 permits

 the

 rationa1

 erection

 of

 particular1y

 large

 steam

 generators.

 -7

  g d n e "工

  S d u 口 e ←L

 X e C . 、4 1↓ s u m e t s a e r n 、 d v d t V 4 、

  P E n S O 1a e s m k 山 l P -a ! U m e M t a b x 石L h o q d u o r h - l h。

 e ←」 e c- ­ - L a v r e d u t c + 」 r a y u p‘ s d e q】

 O P &

 p u s e r r r .牛 、 s m e a t -工

 S 1 4 r h t ←」 m ‘ p n L ·工 . 、4 s e x u a S

 。

 y " e e p n电 -- - t b + L s h a q】

 q d←L

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  This

 method

 工 S

  solved

 by

 the

 method

 according

 to

 claim l

 and

 the

 steam

 generator

 according

 to

 claim

 8.

 It 二Ln

 the method

 according

 to

 the

 invention

 that

 outer

 roof

 section

 has

 a

 plurality

 of

 main

 beams ,

 whereof

 at least

 one

 extends

 transversely over the

 gas

 pass , whereby

 beam

 intermediate

 spaces

 are

 present

 between

 the

 varlous

 main

 beams.

 The

 beam

  intermediate

 spaces

 serve

 as a口

 access

 open 工 ng ,

 which

 components

 to be

 assembled

 ln the

 upper

 part

 the

 gas

 pass , such as

 buckstays , wall

 boxes

 or boiler

 wall

 parts , can

 be

 guided

 to

 their

 point of

 installation

 by

  means

  of

 a

  crane.

 The

 crane

 ca口

 guide

 the

 parts

 二 Ln

 a

 suspended

 fashion

 through

 the beam intermediate spaces.

 While

 the

 of

  the

 boiler

 lS largely

 erected

 and

 completed

 way , it

 is possible

 at

 the

 same

 time , ln

 a

  construction

 area

 lying

 vertically

 below

 the

 aforesaid ,

 above

 the

 boiler

 floor , to

 assemble

 the

 工 nner

 roof

 section

 of the

 boiler

 structural

 steelwork

 roof

 and , beneath

 the

 latter , the

 boiler

 roof

 and

 the

 internal

 cornpo 口ents.

 The

 concer 口ed

 can be

 held

 at the

 respective desired

 and

 connected

 togethe 工, for

 example

 by

 means

  of a

 It is also possible to erect the

 lnner

 boiler

 steelwork

 roof

 by

 suitable

 口 teans

 and

 to assernble

 suspended

 therefrom

 the

 boiler

 roof

 to

 be

 assernbled thereunder

 and the

 internal cornpone 口 ts. The inner

 roof

 sectlon

  of

 the

 boiler

 structural

 steelwork

 roof

 can

 also

 be

 suspended

 on

  strands

 or

 traction

 ropes

 which

 are

 attached

 to suitable

 cable

 The

 cable

 hoisting

 include , for

 lifters ,

 which

 can

 set

 up

 on

 the

 rnal 口

 outer

 boiler

 structural

 steelwork

 roof.

 The

 ma 工 n

 bearn

 transversely

 over

 the

 gas

 pass

  can

 in

 particular

 be

 for

 the

 suspension

 of

 the

 inner

 boiler

 structural

 steelwork

 roof

 or

 roof

 modules

 into which

 the

 inner

 boiler

 structural

 steelwork roof

 is

 divided.

 -8

  【U

 P←L e o q J a 牛L

 n a v - d

 a n r v e e q dn n o -- - - l r t e c r e 1 4 · L o e 1 4 n " " D ←」 - L

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 0 d e d n e q】

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 S a e S

 O U q u v 1 4 n h h o S 1牛

  a g vd←I g uu u q d ·工 M -- - 由 e q M - l s d r o e 此 n e d 、 a 口 α da q u w a e r t l u m "工 q u v A U e s q】

 s a p o 出 q u p - f

 l - "工 s s o r p o o r a t q d u

 。

 d e s o p e l o p &

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 1 4

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 C n r e e工 α J

 V a a o t o u e r x r n ←」 e p -工 p

 S

 S - & 寸m ∞C C N A V C O N A V C C N A O L 卜N 4

  The

 of

 n

 of

 the

 this

 the

 erection

 boiler

 wall

 and

 the

 buil t-in

 compartments at

 vertically spaced apart

 from

 one

 another

 and

 bringing-together

 ,

 whereby

 the

 工 n 口er

  roof

 with

 internal

 components

 therefrom 工 S

 汇 aised

 upwards , also

 n the

 case

 very

 large

 steam

 with

 which an

 nner

 roof

 section

 the

 whole

 and an

 outer

  roof

 standi 口 9

 completely

 of

 the

 would

 lead

 to

 uneconomical solutions.

 With

 the

 of the

 boiler

 structural

 steelwork

 roof

 n

 the

 proposed

 manner , whereby

 at least

 one

 ma n

 beam of

 the

 outer

 roof

 section

 runs

 across

 the

 gas

 pass , gas

 passes of , for

 m

 X

 30 m cross-section

 can

 be

 bridged

 without

 The

 口 \a n

 beams

 are

 preferably

 designed

 free

 from

 which

 offers

 static

 and

 dynamic

 and

 a reduction 工口

 loaded

 points

 separation.

 With

 the

 very large

 boiler

 structural

 steelwork

 can

 divided

 into an

 nner

 and

 outer

 工 oof

 section

 and

 can be

 brought together

 after

 the

 wall

 and

 the

 internal

 components

  It 工 S

 possible

 to design

 the

 工 nner

 roof

 section

 as

 single-

  P 工 ece

 。

 r

 multi-piece , e.g.

  divided

  into

  roof

  modules.

  The

 工 nner

 roof

 sectio口

 can

 be

 erected

 on

 the

 boiler

 floor

 or

 can

 be

 brought

 there

 工 n

 the

 form

 of

 prefabricated

 units.

 The

 boiler

 roof

 to

 be

 assembled

 thereunder

 and

 internal

 components can then be assembled suspended from it , whereby

 the inner roof section remains at the same , sufficient

 height

  or

 height.

 s

 raised

 step

 by

 step

 proceeding

 from

 a

 lower

 If

 the inner roof

 section is

 designed

 in

 one piece , it will

 工 n

 any

 event

 be

 moved

 upwards

 as

 a

 whole

 with

 the

 internal

 -9

  V 4 e l h V 4 1 4 1 4

 a u d h u E m e s s a + L

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 v d ←L

 v . " - 1 4 . l D · L x e -、- d 俨& 口 ·· · · - 〉 ‘, v d 嘈 1 4

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 e ·工 。

 b b - l s s 1 4

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  components

 suspended thereunder , when the upper boiler

 wall

 is complete

 and the

 internal

 components

 suspended on it are

 ready

 assembled.

 1f , however , the

 1nner

 roof

 section lS

 divided

 into

 roof

 modules ,

 two

 different

 procedures

 can

 alternatively

  be

 carried

 out , 1.e.

 工口

 first

 place

 sy 口chronous

 ra1s1ng of

 all

 the

 roof

 modules

 with

 the

 internal

 compone 口ts

 suspended

 thereunder

 to

 the

 or

 工口

 the

 seco 口d

 place

 the

 roof

 components

 beneath

 the

 roof

 module

 one

 after

 the

 other ,

 1.e.

 at

 t 工 mes.

 1n

 the

 latter

 case , the

 boiler

 roof

 must

 also

 be

 designed

 multi-piece , so

 that

 each

 工且 ner

 roof

 module

 has its own

 boiler

 roof

 section assigned to it.

  Whilst

 the

 first-mentioned procedure has the advantage that

 internal

 components

 can

 simultaneously be carried by a

 plurality

  of

 roof

 rnodules , 1.e.

 can

 area

 that

 is

 larger than

 that of

 a single

 roof

 the

 second-

 mentioned

 procedure

 has

 the

 advantage that

 the

 erection

 of

 the

 upper

 boiler

 wall

 and

 the

 erection of

 the

 inter 口 al

 cornponents

 can

  be

 linked

 to

 one

 another

 more

 closely

  1n

 terms of

 procedure

 and

 timing.

 1f , for

 example , a

 very

 large

 stearn

 with

 four

 boiler

 walls is

 being

 erected ,

 walls

 being

 orientated

 for

 example

 to

 the

 north , east , south

 and

 and

 if

 the

 northern

 boiler

 wall

 aηd , around

 the

 corners , a part of

 the

 eastern

 and

 the

 western

 are

 already

 completed ,

 the

 roof

 module

 to

 the

 norther 口

 boiler

 wall

 can

 be

 components

 whilst lying

 further

 thereunder

 roof

 are

 modules

 still

 with being

 erected

 over

 the

 boiler

 floor

 and

 the

 eastern , western

 and

 southern

 boiler

 walls

 are

 still

 completed.

 This

 procedure

 components

 also to

 the

 erected.

 and

 to

 the

 internal

 work , for

 example , lS

 facilitated.

 The

 with

 regard to

 the

 organisation of

 the

 production

 sequence

 permits

 the

 latter

 to

 be

 compressed

 so

 as

 to achieve

 the

 -10-

  k r o w - 4

 v de r e 1 4 ·工 O V --D A U a e r 1 4

 a s e c u d o r & e

 h ←L

 1 4

 b a r e 白」 t s 1 4 在l占 , d 2 a 盯

  山 e d D n a L D & ← q d 0 w - ·工 c u r + L C U 1 4 S e d r e d n y " u

 q y n b a r 2 P U

 e r " L E u d t · L 1 4 i b e h + L P E t s V A 1 4 1 4 n a a p‘ C d n q d "工 n d - l r S - L C e v d p l s e e e d o n c o c r e h + L

 ι在 e h r o 石上 p‘ a q】

 e r r o c F 卡」 - l 可 t y e h ←t」e

 Z o r L h h q d +」 t

 n ← q d t

 u S e 1 4 u a -- - h

 c "工 h w z "工

 r 口

 o n p a p ­ p‘

 u s s +」 o h t 1 1 4

 n u ‘G

 "工 O

 O P - m A 寸m ∞C C N A V C O N A V C C N A O L 卜N 6

  shortest

 generators.

 possible

 building

 times

 for

 large

 steam

  The

 advantages

 are

 obtained

 with

 the

 steam

 generator

 to

 claim

 8. The

 undivided

 ma 工 n

 beam of

 the

 outer

 boiler

 roof

 spanηing the gas pass

 endows

 the

 boiler

 structural

 steelwork with particular

 stability and offers a suspension

 inner boiler

 structural steelwork roof

 or the

 thereof. The result is a statically

 favourable

 construction

 combined

 with

 the

 aforementioned

 advantages

 as

 regards

 the

 erection

 of

 the

 steam

 generator.

  工 s

 not

 essential , it has proved advantageous to

 a 工 ign

 beams of

 the

 outer

 boiler

 structural

 steelwork

 roof

 parallel

 to one

 another.

 This

 a clearly

 arra 口ged

 structure.

 Furthermore

 ,

 ma 工口

 beams

 are

 preferably

 undivided.

 They

 can be

 erected

 ln a

 previous construction

  phase

 工 n

  which

 the

 wall

 has

 not yet been

 completed.

 The intermediate spaces between

 the

 main

 beams

 are

 designed

 sufficiently

 large

 to

 permit

 boiler

 wall

 sections

 and other parts to be lifted from

 above

 口 to

 the boiler

 structural

 steelwork.

 The

 ma 工 n

 beams

 are

 as box-section

 beams.

 A

 sufficient

 lS achieved

 with

 the

 the

 construction

 phase ln

 gas pass , s 。

 that

  the

 main

 beam

 gas

 pass

 ln

 particular

 can

 also

 serve

 as

 a

 the

 cable

 hoisting systems

 for

 ralslng

 the

 inner boiler

 structural

 steelwork roof.

 Further

 details

  of

 advantageous

 embodiments of

 the

 steam

 generator are the subject-matter of

 description

 and sub-claims.

 the

 drawing ,

 the

 -11

  V 4 1 4

 e e z u q J ←L

 e - - p m o c n "工 " L . d ι俨

 e r e n 口 i ←E M C V d e

 " k

 r o b r b -- - b m e e e r w e - - 4 h v de w e 1 4

 1 4

 卡」 q J S 口

 S a s h ,"工 - l a ←L C M " ←」 ←」 " 旨 l R r l a e v d w r a r . M U a a x p - r h - 【D u 卡 」 c u r ←」 S 口 e v e -工 n噜 r m t a ·工 e l l g L

 . 1 - 0 e L - l r 旦 ←」 P 出 U a g U t G『 e c s u -- -z a t r s q d n - l w a r s e l p d m a e x n T】U ←V

 嘈 I 寸m ∞C C N A V C O N A V C C N A O L 卜N

 of

 ernbodirne 口 t

 。f

 7

 the

  invention

  are

  illustrated

  工 n

 In

 the

 figures:

 Figure 1

 shows

 an essentially

 assernbled

 stea盯 l

 generator a

 diagrarnrnatic

 perspective

 view ,

 Figures

 2

 to

 5

 show

 the

 steam

 gene 工 ator

 1n

  var 工 ous

 construction

 illustrates

 a

 boiler

  and

 2

 outer

 the

 工口 ner

 boiler

 structural

 steelwork

 roof

 already

 crane ,

 erected

 as

 well

 as

 an

 assernbly

  Figure

 3

 illustrates a

 subsequent

 construction

 stage

 。主 the

 boiler

 structural

 steelwork

 with

 buckstays

 and wall

 boxes

 already

 partially

 assembled ,

 Figure

  4

  illustrates

  a construction

 stage , 1n

 which

 with

 the the

 boiler

 outer

 structural

 boiler

 steelwork structural

 steelwork

 roof

 lS erected

 and

 the

 boiler

 walls

 are

 being

 assembled ,

 whilst

 ancillary

 heating

 surfaces

 are

 being

 assernbled

 at

 the

 sarne

 tirne

 above

 the boiler

 floor , and

  Figure

 5

 illustrates

 a

  building

 stage

 1n which

 the

 surfaces , after

 their

 have

 bee 口

 steelwork

 the

 roof

 into

 boiler

 their

 installation

 latter ,

 position

 and

 fixed

 1n

 the

 -12

  C - l t a m a r q d a i - d

 d n r e q d ­ n w ·工

 e e a - 1 4

 - - 0 -- l w e - 1 4 V d i o -- - v m a x e b "工 u e b v - 1 4

 咱 - 2 - a n 0 r 1 4 a z 0 a t t c a q de u .『4 ←L

 r e 口 n "工 P L

 C U E 卡」 S c e s r r u e e ←」 q d p v d S 1 4 - l L a c - - t r e v l e a -- - r -- - u 月M Z a + L

 C u p - r

 ←」 1 - a A U

  仨L e n G J

 O n

 ? " s a ·工 r r z o

 a n‘ 寸m ∞C C N A V C O N A V C C N A O L 卜N 8

  Figure

 6

 shows a

 simplified

 embodiment of a

 steam

 generator

 according

 to the

 invention

 工 n

 a

 diagrammatic

 simplified

 plan view ,

  Figures

 7

 to

 9

 show

 different

 configurations of

 the

 divided

 roof ln

 boiler

 a

 structural

 steelwork vertical

  Figure

 10

 shows

 an embodiment

 of the

 steam

 according

 to the

 in 飞 rention

 stage

 工 n

 a simplified

  Figure

 1 illustrates

 a

 steam

 generator

 1 in

 the

 manner

 of

 a

 tower construction , which is

 carried

 by

 a

 boiler

 structural

 steelwork

 2. Boiler

 structural

 steelwork 2

 includes

 vertically

 arranged boiler

 columns

 3 which

 rest

 on

 suitable

 foundations.

 Boiler

 columns

 3 erected

 ln a

 square

 and

 are

 co 口nected

 to 。口e

 another by

 boiler

 steelwork

 bars

 4 which

 are

 arranged

 ln

 tiers.

 Bracings

 5

 are provided

 for

 the

 purpose

 of

 reinforcement.

 At

 the

 top , boi1er

 structural

 steelwork

 2

 carrles

 a boiler structural

 steelwork

 roof

 6 , which lS

 divided

 into

 an

 outer

 roof

 section 7

 and

  an

 工口ner

 roof

 section 8.

 In

 the

 present

 example

 of

 embodiment , outer

 roof

 section

 7

 lS formed by three main beams

 7a , 7b , 7c , which

 rest ln

 and spaced apart from

 one

 another on

 boiler

 steelwork

 2.

 At

 least

 。口 e

 of

 mal 口

 beams

 7a , 7b , 7c , 工 n

 the

 present

 middle

 ma 工 n

 beam

 7b ,

 spans

 a

 central

 free

 space

  工口

 structural

 steelwork

 2 , in which

 a

 gas pass

 is to be

 erected.

 All main

 beams

 7a ,

 7b , 7c , but

 at

 least

 middle

 main

 beam

 7b , are

 preferably

 designed

 undivided

 viewed

 over

 the

 length.

 Main

 beams

 7a ,

 7b , 7c

 ca 口 be

 divided

 along

 longitudinally

 running

 jointing

 -13

  s n o - ­ q d e z ) 川 m t r ­ f A U - U

 时 E m I ‘ P U L O r s a - 4

 s p‘ r

 e y p 1 4

 " D a r e 石上 e n y U e n 、 ←L

 n r p & ,工 C u a Q J - i 1 4

 1 4

 a m a e b q】

 ←E W t s 口 e r t w r M ∞ b

 a m p -- 1 r e -。『,J

 e q u r e v s n u a 8 p m O C a r - - S " r ,工 o " b 2 b e s e ←E W

 L + n a e e n h o r p‘ e - - 4 q d (

 a 口 r e 卡 」 n 、牛 m p ­ r o u c s ←」 寸m ∞C C N。C O N A V C C N A O L 卜N 9

  planes

 into

 There

 are

 however

 no continuous

  Inner

 roof

 section

 8

 二LS

 carried

 by

 outer

 roof

  section

 7

 and

 工 S

 connected

 to

 the

 latter.

 The

 outline , l.e.

 the

 max 工 mum

 external

 dimensions , of

 口ner

 roof

 sect 工 0 口 8

 lS

 at

 least

 somewhat

 smaller

 than

 the

 clear

 width of

 the

 space

 surrounded

 by

  a

 boiler

 wall

 19

 ln

 steam

 generator

 1 , at

 least

 工 n its

 upper

 section

 9. In

 this

 section , illustrated

 steam

 tubing

 1

 工 S

 with

 vertical

  Provided

 ln

 section

 9

  of

 steam

 generator

 l are

 internal

 including economisers ,

 reheaters

 and

 These

 are

 formed

 in

 each

 case by

 horizontally

 arranged

 tube

 bundles , which

 extend

 transversely through

 the

 gas

 pass

 defined by

 steam

 generator

 1 and the

 connections

 whereof

 are

 led

 through

 boiler

 wall

 19 , ln

 particular

 its

 sect 工 on

 19a.

 The

 latter

 工 S surrounded

 externally

  by

 buckstays

 12 , which

 boiler

 wall 19

 externally

 and

 are

 carried

 by

 the

 These

 buckstays

 are

 connected to

 one

 another

 at

 boiler

 corner as

 well

 as

 to

 boiler

 wall

 19.

 Moreover , the

 buckstays

 formed

 by

 horizontal , rigid

 beams

 are

 connected

 to 。口e

 a 口 other

 by

 vertical beams , so-called struts.

 In 口er

 roof

 section

 8

 of

 boiler

 structural

 steelwork

 roof

  6

  lS

 formed

 by

 。ne

 or , as i 工工 ustrated in figure 1 ,two

  roof

 modules

 8a , 8b , which are carried by main beams

 7a , 7b , 7c.

 Modules

 8a , Bb are

 preferably

 held

 at

 the

 same

 height

 and

 for

 their

 part

 carry

 boiler

 roof

 19c

 shown

 工 n

 figure

  7 ,

 which

 terminates

 the

 gas

 pass

 to

 the

 top , as

 well

 as

 the

 suspended beneath the boiler

 roof.

 Roof

 modules

 8a ,

 are

 screwed

 or

 welded

 to main beams

 7a , 7b ,

 7c. However , roof modules 8a , 8b

  form

  independent

 units

 which

 are

 pre-assembled

 independently

 of

 main

 beams

 7a , 7b ,

 7c and

 are

 subsequently fixed to the latter.

 -14

  "· e b y h T } Q J 1 4

 e

 U

 GA -- - 1 4 b o 1 4

 4 《

 4 · k z e o r

 W u-- ­ q de " l f - - -

 e + lw

 S A U e ←L

 S

 在牛 V 4 ·工 《d 如L Q】

 1 4 h k c u h u - i

 a u d 1 v s s 2 d e d - - V O uu m m d x ­ A

 r p P -- ‘ e r e h ←F

 L d o q n - l u n ·工 V 4 1 4

 " D

 m e A U e t r a t t n s o s c a s 寸m ∞C C N。C O N A V C C N A O L 卜N 10

  Section

 9

 of

 the

 boiler

 工 S

 fol1owed

 be10w

  by

  a

 further

 section

 10

 of

 the

 boiler

 with

 a

 boiler

 wall

 section

 which 工 S

 with

 tubing

 vertica11y 。主

 Buckstays

 support

 boi1er

 wa11

 sectìon

 19b

 from

 exterior and are carried by

 the 1atter.

 There

 fo11ows be10w

 a

 boi1er

 hopper

 11

 which is a1so provided with buckstays.

 Steam

 generator

 1 il1ustrated

 in

 this

 the

 sequence

 illustrated

 in

 figures

 2

 regard

 to

 5.

 1. S

 erected

 1. n

 Accordi 口 q

 to

 figure

 2 , the

 assemb1y

  of

 boi1er

 structura1

 stee1work

  2

 1. S

 started

 王主 rst.

 Boi1er

 structura1

 stee1work

 co1umns

 3

 and

 boi1er

 structural

 steelwork

 bars

 4

 as

 well

 as

 braci 口gs

 5

 are

 erected

 stage

 by

 stage.

 A

 crane

 16

 can

 be

 used

 for

 the

 assembly.

 Other

 suitable

 means

 are

 also

 possible.

 At

 the

  same

 tìme , roof

  modu1es

 8a , 8b

  are

 pre-assembled

  on

 the

 boi1er

 structural

 stee1work

 f100r

 or

 are

 positio 口 ed

 at

 this

 point

 1n

 a

 pre-assemb1ed state.

 They

 preferab1y

 lie

 more

 or

 1ess precisely

 vertically

 beneath

 the

 location

 they

 will

 subsequently occupy in the installed posi tion. The

 overall

 cross-section

 of the outline , which

 is

 defined

 by

 roof

 modules

 8a , 8b , 工 S

 somewhat

 smaller

 tha 口

 the

 interna1

 clear

 width

 of

 the

 gas

 pass.

 A further

 work

 step lS

 illustrated 1n

 With

 。且 boiler

 structural

 2 , the

 12

 and

 wall

 boxes

 15

 it

 The

 latter

 are

 with

 crane

 16

 as

 pre-

 assembled

 buckstays

 and wall

 boxes

 12" , 15"

 from above

 into

 or onto boiler

 structural

 placed or installed there.

 steelwork

 2

 and

 are

 provisionally

 Whe 口

 buckstays

  and

  wal1

  boxes

 12 , 15

  are

  assembled

  and

 boiler

 structural

 steelwork 2

 has

 reached

 its

 desired

 -15

  σ dv d F e q d 电G p‘ v d o d +」 a e n a h " u

 e n e "工 『/ a q J - - t c e n n o c D‘ + IU

 R a Z r a s s "工 -i x r m 0

  1 4

 z a f - - -

 e a n r z e ←」 e ←E e n - l W n "工 S

 E -- -e q J & L e ­ - i ←」 白U W

 Z 和L

 a 1 4

 P -u o m a x e e s o 毗 呵 -叮-- -

 ←L S E L o h e 1 4

 b a c q d n

  G z ·工

 e ←」h u

 c s 4工 a a t " o " q d h t E e l n n - 1

 0 P‘ e m l a b r ←」 厅M J ­

 E - e c m e e s x a e c 寸m ∞C C N A V C O N A V C C N A O L 卜N 11

  height , outer

 roof

 sectio 口 7

 工 S

  erected , whereby

 mai 口 beams

 7a ,

 7b , 7c

 are

 assembled

 。口 upper

 boiler

 structural

 steelwork

 bars

 4. They

 can

 moreover

 be

 connected

 to

 one

 another

 by

 co 口necting

 beams , as

 for by

 bearn

 7d , which

 lS arranged

 outside

 the

 defined

 boiler

 wall

 19.

 Connecting

 beam

 7d

 supports

 main

 beams

 7b and

 prevents

 the

 latter from having

 to take up

 excessively large tilting loads.

 If

 roof

 modules

 8a , 8b are

 respecti vely divided

 or split up

 still

 further , further

 connecting beams

 ca口

 also

 be

 arranged

 above

 13

 surrounded

 by

 boiler

 wall

 19 , e.g.

 parallel

 to

 connecting beam 7d.

 Accordingly , four roof

 modules

 ln

 a

 square , for example , would then be worked with.

 On outer

  roof

  section

 7 , there

  lS 口ow

 arranged , for

 system

 17 , which

 includes

 several

 devices

 tractio口

 rope

 bundles

 18

 are

  each

  to

 the

 corners

 。f

  roof

  modules

 8a , 8b.

  The

 cable hoisting

 systems can be positioned both on main beams

 7a , 7b , 7c

 and

 on the

 connecting

 beams , for

 example 0 口

 connecting beam 7d.

 The

 erection of

 boiler

 structural

 steelwork 2 工 S

 essentially completed

 with

 this

 building stage.

 The

 simultaneous

 assembly

 of

 boiler

 wall

 19a in upper

 section

 9

 and

 the

 erection of

 internal

 compone 口ts

 beneath

 roof

 modules

 8a , 8b

 lS 口。

 w

 commenced.

 This

 procedure lS

 illustrated

 in

 figure

 4.

 For

 the

 erection

 of

  boiler

 wall

 19a , indi vidual boiler wall parts

 20

 a 口 d , as

 mentioned ,

 also buckstays

 and other parts , as

 required , are introduced

 from

 above

 using crane 16 into

 interior

 space

 13

 and

 secured , for

 example

 suspended

 0 日 outer

 roof

 section 7.

 Boiler

 wall

 19a

 is thus

 e 汇 ected

 as

 ln

 a

 to bottom.

 The

 gas

 pass

 bounded

 by

 the

 and

 工 n

 its

 upper

 section

 9

  still

 has

  a

 free

 cross-

 which

 is bridged

 solely by main

 beam

 7b.

 -16

  "b "d e s o 8 t e t h " q d C

 ←」 q M ,工

 e P & a e r e 8 n e n o u h p &

 n b 8 e p e n q n w 二 o c - 1 s ←」 e h u M e a p & e

 - 1 n 、 s d r a w n y p e b ←」 盯 S .口 m m C e 咱 I 汇 4 口 沮 E V 4 1 -

 巾 e R M n - l f u u u ←L

 O

  M H p m .工 口 .山 严 e U n 。"工 q】

 a ←」 e L d e m z e 卡 」 n E - - - c u r ←」 q】

 α d - d

 n n o c e - -r ←」 u a e h c e s q d n · l S 4工 r D -

 m o c s · - E J 卡l w n /』 s r ·工 Z L 寸m ∞C C N。C O N A V C C N A O L 卜N 12

  At

  the

 sarne

 tirne

 as

 the

 installation

  of

 parts

 20

 for

 the

 erection of

 boiler

 wall

 19 , the

 internal

 cornponents

 are

 erected beneath

 this

 For

 this

 cable

 hoisti 口9

 systern

 17

 ra 工 ses

 roof

 rnodules

 l 口 each

 case

 to

 a

 height , and

 holds

 thern at

 this

 which

 lS such

 that

 the

 internal

 cornponents

 can

 be

 step by

 step.

 When

 roof

  rnodules

 8a , 8b

 have

 been

 raised

 to

 a

  first

 height , the

 boiler

 roof

 s

 first

 erected

 beneath

 thern

 and

 secured

 in

 a

 suspended

 rnanner.

 Roof

 rnodules

 8a , 8b

 are

 then

 raised

 to

 the

 next

 height , so

 that a

 first

 econornlser

 coil

 21

  can

 run

 beneath

 the

 boiler

 rnodules

 roof

 8a ,

 and

 8b. E气

 with

 further

 28

 to

 coil

 roof

 22

 follows

 after

 further

 lifting.

 Roof

 rnodules

  8 ,

 are

 now each raised step by

 step and , as illustrated in figure 4 , a

 reheater

 coil

 23

 and

 a

 second

 reheater

 coil

 24

 are

 installed

 one

 after

 the

 other , suspended

 on

 carrying

 pipes.

 After

 further

 raising

 of

 roof

 rnodules

 8a , 8b , a

 superheater

 coil

 25

 arranged

 at

 the

 lowerrnost

 point

 can

 be

 installed.

  Roughly

 at the

 sarne

 tirne

 as the

 cornpletion of

 the

 aforernentioned

 internal

 cornponents

 21

 to

 25 , boiler

 wall

 19a

 has

 L 口 the

 rneantirne

 also

 been

 cornpleted.

 工 n

 the

 next

 step

 illustrated

 n figure

 5 , construction

 unit 26

 roof

 rnodules

 8a , 8b

 and

 internal 21

 to raised

 and

 thus

 guided

 boiler

 walls

 19a

 to

 its

 installation

 Roof

 rnodules

 8a , 8b

 are

 raised

 into

 the

 spaces present

 between

 rnain

 bearns

 7a , 7b , 7c

 and

 connected

 there

 to

 rnain

 bearns

 7a ,

 7b , 7c.

 Main

 bearns

 7a , 7b , 7c

 thus

 carry

 roof

 rnodules

 8a ,

 8b and

 the

 loads

 suspended

 frorn

 the

 latter.

 I 口 ternal

 cornpo 口 ents

 21

 to

 25

 can

 now

 be

 con 口 ected.

 Boiler

 wall

 19b

 and

 boiler

 hopper

 11

 are

 subsequent1y

 assernbled

 工口

 order

 to obtain

 the

 finished

 stearn

 ge 口 erator

 according to figure 1.

 -17

  d e s m q d a n e a b r E m a - - - a M d e m O J - - t s s a q M e q】

 Z a V A -

  吁4

 r r - - 1 4

 u b

 川 1 ·口 仁 r d ,U p n n a

 o c I u t - u 1 4 1 4 a w n山 口 P‘ U 山 · P V L V A【/ e n 电 r m l企 e - ­ .工 " o b d a 7 伊 y - D 、G e n E工 在I牛 e A U d n C n 自 、牛 . a a Z r a n o ←L

 a m a r 厅U J

 - - ←L

 P e

 - -h r + L c s e A U a ; ·工

 川 嘈 r q u s a p d e m e e r q d a " c b 7 s a G J b, 叮, e h u ←L r o 卡 」 e ←L

 r a ­ a a r

 f ι e o

 n s

 e n q d I - e a +」 P & 卡 」

  e a s -- -- 寸m ∞C C N A V C O N A V C C N A O L 卜N 13

  Figure

 6 illustrates

 a modified

 embodime 口 t of

 a steam

 1 工 n

 a

 and

 simplified

 plan

 Vlew.

 as exists

 with

 the details

 described

 above , the

 same

 reference

 numbers

 are used and reference

 lS

 made

 to

 the

 above

 A

  total

 of

 three

 main

 beams

 7a , 7b , 7c

 span

 here

 internal

 space

 defined

 by

 boiler

 wall

 19 , whereby

 maln

 beams

 7c are

 aga 工 n

 outside

 7a , 7ab ,

 7c

 are

 19.

 at

 uniform

 distances

 and

 parallel

 to one

 another

 are

 designed

 undivided.

 Main

 beams

 7ab , 7b , 7bc ln

 have

  no

 point of

 separation

 ln

 the

 immediate

 of boiler

 wall

 19

 inside

 interior

 space

 13.

 are to

 outer

 boiler

 structural

 steelwork

 roof

 and

 not

 lnner

 boiler

 structural

 steelwork roof

 8.

  Inner

 boiler

 structural

 steelwork

 roof

  8

 here

 of

 a

 to...

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