GB2525514A - Base for installing rotary machine - Google Patents

Abstract

This base (100) for installing a rotary machine is provided with: a driving machine installation space (104) in which is installed a driving machine (101); a driven machine installation space (105) in which is installed driven machines (102, 103); an auxiliary machine installation space (106) in which is installed an auxiliary machine; anti-vibration mounts (107, 108, 109) having an elastic action and a dampening action, two mounts being installed below the driving machine installation space (104) and one mount being installed below the driven machine installation space (105); main girders (110) that extend on both side surface sections of the driving machine installation space (104) and the driven machine installation space (105) in the longitudinal direction thereof; and at least one stiffening girder (111) installed in addition to the main girders (110).

Description

DESCRIPTION

TITLE OF INVENTION

BASE FOR INSTALLING ROTARY MACHINE

TECHNICAL FTFLD

[0001] The present invention relates to a base for installing a rotary machine.

BACICGROiThD ART [0002] Conventionally, with a development of petroleum and gas industries, a demand for rotary machines has increased, such as compressors and turbomachines which are used for isolation and purification of petroleum and gas. These rotary machines wh:cn are draven machines aie cypicaly _nstallaC on Dases serving as foundations, together with driving machines such as a motor and auxiliary machines such-as an oil -supply system.

Furthcr, upsizang of the rotan machines is progressing for improvement in efficiency and expansion in application.

[0003] with this progress, bases have been upsized. The increased amount of materials for the upsized base-s increases a manufacturing cost; therefore, reduction in the manufacturing cost has been demanded. In addition, in recent years, active development of offshore oil fields in recent years has caused a challenge to reduce the weight of bases which are mounted on floating facilities floating at sea.

[0004] Meanwhile, when a base is designed, the size of the entire base and the arrangement of girders which reinforce the base are determined so that the strength and deformation of the base satisfy the standards in consideration of the weight of each device on the base and a load such as a motoi. torque applied to the base.

[0005] Examples of simple girder arrangement include a method in which girders are arranged in a grid pattern in the 1ongitidnel direczion and in the width direction of Lhe base, and the girders are arranged with predetermined intervals or at positions supporting the devices on the base, in other words, parts to which the weights of the devices are applied. However, the base receives non-uniform loads which are different in places depending on the arrangement and the weights of the devices.

[0006] Accordingly, this example of simple and uniform girder arrangement in a grid pattern may generate a part. having an excessive rigidity more than necessary inside the base1 resulting in an increase in the manufacturing cost and the weight of the base. Further, a load unique to the marine due to waves and winds is applied to a base which is mounted on an offshore floating facility, in addition to the load (load weight) due to weights of the devices and the motor torque.

(0007] ks backgzo.nd technclosee ot the present technical field, Patent Literature 1 discloses a technology in which "in a rectangular shaped base which is three-point supported by anti-vibration mounts, a Y-shaped girder which includes a V-shaped girder and connects the three-point support positions is installed".

(0008] Patent Literature 2 discloses a technology in which "an elongated torque -absorbing member having a circular cross 3D secLion is nstalled in the longatadinal direction of cA lower portion of a rectangular shaped base which is three-point supported, and a plurality of girders are arranged in a right angle direction of the torque-absorbing member'. :1

(0009] Patent Literature 3 discloses a technology in which "an elongated hollow torque---absorbing member having a rectangular cross section is installed in the longitudinal direction of a lower portion of a base; and a plurality of girders are arranged in a transverse direction of a right angle direction of the member'.

CITATION LIST

Patent Literature [0010] Patent Literature 1; United States Patent 7552903 B2 Patent Literature 2: Japanese Patent Application Pbiicataon No ScF3-024699 Patent Literature 3; United States Patent: 6230481 Ri gUNMAn OF INVENTION Technical Problem (0011] As described above, as for the arrangement of girders which reinforce a base, the method in which the girders are arranged in a grid pattern in the longitudinal direction and in the width direction of the base may generate a part having an excessive rigidity more than necessary inside the base, resulting in an increase in the manufacturing cost and the weight of the base.

[0012] Patent Literature 1 employs the base being three-point supported by the anti-vibration mounts while taking the load at sea into consdera4 ion, and thc structure n whac te Y-shaped girder which connects the three-point support positions s snstdllod in the base UoweveL, is difficult to say that the girder arrangement in Patent Literature 1 attains proper girder arrangement because the support positions are considered but the arrangement of the devices on the base and the weight relation thereof are not considered.

[0013] Moreover, Patent Literat.re 2 and Patent Literature 3 employ the structure in 9vhich tne torque-arsorbing matuber which S restncts a torsion of t:e entire base s nstalled, whh retults in corrplcated connection sructure because a connection between the hollow-like torque--absorbing member and the other members is difficult regardless of LIe reduced number of members, thereby increasing the manufacturing cost.

Moreover, it is difficult to say that the structures attain the proper girder arrangement because the other members are arranged in a grid pattern in the right angle direction with respect to the torque-absorbing member.

(001.4] The present invention has been made to solve the above problems, and an object thereof is to provide a base for installing a rotary machine in which a girder having a proper ngdity is disposea at a proper pos.taon tn a base, thereby making it possible to reduce a manufacturing cost and a weight thereof.

Solution to Problem [0015] A base for installing a rctary machine according to claim 1 is configured such that a driving machine installation, space in which a driving machine is installed is provided inside a base; a driven machine installation space in which a driven machine is installed is provided inside the base; an auxiliary machine installation space in which an auxiliary machine other than the driving machine and the driven machine other than is installed is provided inside the base; anti-vibration mounts iaving an elasL3cty and a damping acLon a:e a.nstalied, Lo of the anti-vibration mounts being installed on lower portions of the driving machine installation space and one of the

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anti-vibration mounts being installed on a lower portion of the driven machine installation space; main girders which extend in a longitudinal direction of the base are installed on both side surface portions of the base in the driving machine installation space and the driven machine installation space; and at least one stiffening girder in addit.ion to the main girders is installed in the base (0016J A base for installing a rotary machine according to claim 3 is configured such that a driving machine installation space in which a driving machine i.s installed is provided inside a base; a driven machine installation space in which a driven machine is installed is provided inside the base; an auxiliary machine installation space in which an auxiliary machine other than the driving machine and the driven machine other than is intal led is prov ded inside the base; main girders which extend in a longitudinal direction of the base are installed on botn side surface portions of the base in the driving machine installation space and the driven machine installation space; and at least one stiffening girder in addition to the main girders is installed in the base, wherein the stiffening girder has a rigidity lower than that of the main girders.

Advantageous Effects of Invention [0017] The present invention can achieve a base for installing a rotary machine in which a girder having a proper rigidity is disposed at a proper position in the base, thereby making it possible to reduce a manufacturing cost and a weight thereof.

BRIEF DESCRIPTION OF DRAWINGS

ju [OOLBJ FIGl is a perspective view of a base for installing a rotary machine viewed obliquely from below according to a first embodiment of the present invention.

FIG..2 is a top view of the base for installing a rotary machine according to the first embodiment.

FIG. 3 is a bottom view of the base for installing a rotary machine according to the first embodiment.

FIG.4 is a perspective view illustrating a placement example of the base for installing a rotary machine viewed ool:quely from below according to ne rirst embodiment of the present i nvenL.on FIG. 5 is a perspective view of a base for installing a rotary machine viewed obliquely from below according to a second embodiment of the present invention.

F1G.6 is a top view of the base for installing a rotary machine according to the second embodiment.

FIG. 7 s a cross-sectional view of a oase hollow section viewed from the A-A line cross section in FIG.5.

FIG,8 is a bottom view of a base for installing a rotary machine according to a third embodiment, FIG 9 i.s a bot tort vew of a base or installing a rotary macF.ne in a first example according to a fouflIl errbodiment FIG. 10 is a bottom view of a base for installing a rotary machine in a second example according to the fourth embodiment.

FIG. 11 is a bottom view of a base for installing a rotary machine in a third example according to the fourth embodiment.

DESCRIPTION OF EMBODIMENTS

(0019] Hereinafter, embodiments of the present invention will he described with reference to the accompanying drawings.

<<First Embodiment>> FIG.' is a perspective view of a base 100 for installing a rotary machine seen obliquely from below according to a first embodiment of the present invention. FIG.2 is a top view of the base 100 for installing a rotary machine according to the first erplDodiment, and P1(3.3 is a bottom view of the base 100 for installing a rotary machine according to the first embodiment, [0020] The base 100 for installing a rotary machine (hereinafter, referred to as nasa 100) accordlng to the first embodiment is a base on which a rotary machine such as a compressor or a turbomachine is installed.

The base 100 is configured to properly arrange girders that are stiffening members inside the base 100 in consideration of the arrangement and weights of devices to be installed therein to reduce the amount of the girders, thereby attaining reduction in manufacturing cost and reduction in weight.

[002 1.] The base 100 is provided with a driving machine installation space 104 in which a driving machine such as a motor 101 is installed, a driven machine installation space 105 in which di ivan machines such as a step-up gear 102 and a compressor 103 which are driven by the driving machine are installed, and an auxiliary machine installation space 106 inwhich an auxiliary machine such as another oil supply system (not shown) is installed (0022] In an upper surface portion of the base 100, a plate member lOOi such as a steel plate which is suhjected to rustproofing processing is fixed by welding to girders (110 to 115) to he described later.

Further, the plate member 1001 may be fixed to the girders using a method such as fixation with bolts or rivets other than a method by welding, however, the method by welding which allows continuous fixation is preferable.

(0023] In a lower portion of the driving machine installation space 104 to which the weight of the driving machine such as the motor 101 and a rotation load (vibration) due to the rotation movemeit thereof are applied, two anti -vibration mou.ts 107 aid 108 are installed.

In a lower iortion of the driven machine installation space 105 to which the weights of the step--up gear 102 and the compressoi 103 That are the driven traclvtnes a'-id rotation loads cvi rat-on) due to L1e totation moverrent Thereof are ap)l ied, one anti-vibration mount 109 is installed. In other words, the base 100 is supported by the three anti-vibration mounts 107, 108 and 109 in total.

[0024] The anti-vibration mounts 107, 108 and 109 are configured to include a spring or a damper, Specifically, the anti-vibration mounts 107, 108 and 109 attenuate a vibration to be applied by an elastic energy due toarigidityof the spring, an internal friction of the spring, an elastic damping force of the damper, or the like. Further, a material such as a rubber having elastic and dampIng actions, other than the spnng and the dampet, iray be applied to the ant] -v]hrat ion mounts 107, LOS and 109 [0025] The anti-vibration mount 109 illustrated in FiG.3 is free, in other words, has no restraint in an Xdirection (the longitudinal direction of the base 100) with respect toamember for placement (not shown) in which the base 100 is installed.

The antivibration mount 107 is free, in other words, has no restraint in a Y direction (the transverse direction of the base 100) with respect to the member for placement (not shown) in which the base 100 is installed.

(0026] in contrast, the antivibration mount 108 is fixed. to the member for placement (not shown) in which the base 100 is placed.

This can relieve a deformation of the base 100 or the member for placement (mt shown) in which the base]O0 is piaeed due the bat U, the X aa4 ?Ø 4irectiozs (the longitudiriái 4j44 transverse thre:ctiona of the base i:Q). in other wcrds,, this ca: pr; the 4ç !ø. of one gf the base tOO arid the tiithéth Lox p1taentezt trcs being.ntluenced to the other.

Aaaatdii4i3a th opearatton. teliatility of the devcea prcide4 on the,,ase io caa be seure& and the reflabi1it, oi the devices can be impravced. Further wethQds other than to the exempli±iS rnethofl may be 3jqy4 the method of áttãthitS the àñt± tbttid ifioutS lG7, 108 &nd ZA9.

(00281 Cê±ié±á1i% thE ttotot sot ha neaviet weight amøas the deflees instafled on tIie kae 1OL 4 also a large rotation toad &te to ttott* ts±qe6e mtmre, e baset 100 is ton±1qtred such that the two ai&Lwibraton mQPnta 107 aM o the three:aati-tik*ti&tithCWttS ar:s installed on the 1wet portion ot the drivin1g madhlne ±nsttZát4p41 pçe *.P4 to prevent the vthrati.ons (a forced vabfltiotl, an unique vibratiotsr or the lute) caised due to the load by, th,,,: wfi* ,: te (rotation) ic, ant the base 100 fbffl being deforme& (GO] the base 0O j by the mtilttj:lesitdEtS (110 t 115) and the plate taut in order to suppcrt the 41vid10 the base]Ø e g&idsZ'S (flo to fl5 are H-Stápéd èthéi a the like1 a thE plate it a steelpiate which is subjecte rustprofing pr4tg.

(0030] Driving Mactine tnstaflat:ion $pa,e 104: an4 PtVen Machine 8 Installation space IOS In the driving maçhinI ±nstalIatio space.Ø4 a..4 the driven machine inatallatiali sate tos as flrders, a pair o gain gir4ers 110 110 which exten4 In M'aZ with or ao,g the longitudinal, direction of the báS 100: an installed on both eide surface portions (including the the: Q:. sj4e siafaces:) of the ba8e 100.

(0*31] The main g4rdèrs 110 á±é inStallEd, so ãà t thtit beth of the driving machine instaflation a he dven !cW:,, i j0fl ace 105 t1t&öa iii thE ettite: ±thqt Of, btth Of the spaces 104 and is or in a partial range across ot..

of tb.. spaces.Q4: and 105. FiG.l to FiG3 ifluat te a case where the main girders flL 1JM are provi4ed on the bo si4e: suz2iea i: the 4flflng machine installatiSi SpEoe 104 d thE dt;itet MtttL installation spate 2O5.

The bcve a $-jfl mounts lot and 1fláè1ttUEbhd to the main ±i èTh no at the tb, si4e snraoe portions,.

LS [OOfli Th the dtiii± nathirte ittataflatiors spate 104 and:he d±iven machine irl5taiza;tton space 105, devices hstlng a ie weight such as thE ftiOtt 101 tht tne drSflng machIne an4 the compressor 103 that is tM e: jv ci1e axe installEd P. 1!ebe in ordE± ta ptESt thE baSe 100 fit being detormea S the gn?vity diz'ection (4efortt$d in 4:!*k direction in flG 1:) by then: didè, j jj:;5 110 rnat an a higher rifld±ty than the other girders.

Füttbfl, in a1 aase where the base IGó is used at se is coden4. a 4nerflal fodé b aWE ai:o a beaiEg sttess by winds and applied not only to the raviy aireØ (:( irddti Ct a axis) ot the base iSGO ut also to hE width di±atit (the ttastansetrection of the base 100, a t-axis 4irecticni, sq tIfl f the base 100 in the width diltect iøn is also rsire to be unproved.

10034] In torn ideratiox at this requirement:, in the pre:sent

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first embodiment, the main girders 110 having a high rigidity are installed on the both side surface portions of the base 100, and this structure allows the flexural rigidity of the entire base 100 in the width direction (the transverse direction of S the base 100, the Y-axis direction) to be improved, and the deformation of the base 100 in the width direction from being prevented.

[0035] As for the girders, in addition to the main girders 110, main machine stiffening girders which extend in arbitrary directions are installed in the driving machine installation space 104 and the driven machine installation space 105.

The main machine stiffening girders are installed as appropriate as explained below in consideration of the arrangement of the devices and the weights thereof in the driving machine installation space 104 and the driven machine installation space 105, [00361 For example, as illustrated in FIG.1, main machine stiffening girders iii which receive the weight of the motor 101 is provided below the motor 101 in the driving machine installation space 104 so as to extend in the width direction of the base 100 (the transverse direction of the base 100, the Y-axis direction.) [0037] The above anti-vibration mount 109 is attached to a center portion of a main machine stiffening girder lila which is provided in the driven machine installation space 105 so as to extend in the width direction of the base 100 (the transverse direction of the base 100, the Y-axis direction) [0038] Moreover, main machine stiffening girders 112 or the like are installed which respectively extend while widening in slant directions from an attached part of the anti-vibration mount 109 below the compressor 103 in the driven machine installation space 105 toward the main girders 110, are fixed to the main girders 110, and are thus formed in a n shape. Specifically, S ends of the main machine stiffening girders 112 are rigidly fixed by welding, by bolting, or the like to the center portion of the main machine stiffen.inq girder ll:La at which the anti-vibration mount 109 is attached. Further, the other ends of the main machine stiffening girders 112 are rigidly fixed to the right and left main girders 110, by welding, bolting or the like.

(0039] With this! the main machine stiffening girders 112 extend while widening in the slant directions from the attached part of the anti-vibration mount 109 at the center portion of the main machine stiffening girder illa toward the main girders 110 are fixed to the left-side arid right-side main girders 110, and are thus formed in a n shape. The main machine stiffening girders U ta extend wh1e widening n the slain arect' ons from the attached part of the antivibration mount 109 (an edge portion in the longitudinal direction of the driven machine installation space and a center lower portion in the width direction thereof) toward the main girders 110, are fixed to the left-side and right-side main girders 110, and are thus formed in a ri shape, to allow the rigidity with respect to a load in an XY direction of the driving machine installation space 104 and the driven machine installation space 105 (a horizontal direction of the base ioU) or axial torsion in the XY direction (the horizontal direction of the base 100) to be enhanced.

[0040] In addition, the main machine stiffening girders can be disposed so as to he extended in the arbitrary directions in

I

acoraance with the nightstand the arrangement of the drivLng:1 machine: and the diven n4Sns. Ti aflows the adequate fltdars inaecordance with the weights and the an gement of the driving m;cbize 44 t: @4v, ti$seg to be provided.

[0041] the main gii4as iio support greater part of the riiditS* náéêáiä± fbi thé d±iIit; rn4dtth i2istaflatiofl spaa 104 and the drinn madhfàà insta]Jation spa ze: LO5; therefore, the *táiñ shine stiffening giriers in, ma and 112 znay have rigid±ty wn than that of iS main g.rd-s 4:.

(00421 in other words, the main machine nil and 112 may have a th±thetthtoitheSS atd asm&fl-sizedshap:t to lowet the section modulus, loweflng the rigidity.

IS itt. thts manner, the tMi *ahiiie Stifféaift girdeiMs 111k tala and 112 hating a reduced S±ze aiow the atnauM o!terSaU to be savéL 4 flow the mmUftctut±tt c&st related to the utatetiai e enses of the fgiz4ers and he wei4hta thereof to be reSthe4, cipa4 with a cae where all the flflets in the base mot have U* same igidity as the: main giz4ers flO: aaiiat: Naitett: taI1&tSd spats LO;6i In e auadiiary mahne jtáliatiGti S CS 10 ifl whith an oil SA$ly sysüm, a cantrol devie. and the iike which are nct ilitstratedr other than the dnthg mathine?and the d±i*t machines are tëtidedL) A illtEstflted in flG I t FIG. 3, auxSuary mactine sttflning gi4r! in, fl4 an4 115 which exten4 ii arbitit dittiSi±t installed. :1: The auxiliary machine stiffening &flen fl, J34 and l15 an ji4ta1Le4 as apptopflste as explained below jn consideration ot the qment qt the 4eyiqes an4 the w'44 teq 4, the auxiliary macbiñe iitftalaUaap s4ce 106.

(00:441 erierally, an auxiliary machine such as the oil supply system has a lighter weight than the main machine such as the motor 101 or the compreSsor 103, so that; the auxiliary machine installation space 106 receives a small load from the auxiliary S machine.

Accordingly, the auxiliary machine stiffening girders 113 tlhich are provided to both side surface portions (including tne vac:rntyof the botn side surfaces) of the auxiliary rrach3 tie installation space 106 are not required to be girders having a high rigidity such as the main girders 110, and may have a low rigidity. Further, in FI(Ll to FIG.3, a case in which the auxiliary machine stiffening girders 113 are provided on the boh sde surfaces of the auxiliary tracnine nstaitatwn space 106 is illustrated.

[0045] The auxiliary machine stiffening girders 113 may be installed, in accordance with an installation area of the auxiliary machine, which is not illustrated, so as to be coupled or connected to the train girders 110 in parallel with or along the extensions of the main girders 110, or may be installed in arbitrary directions at positions which are neither coupled nor connected to the main girders 110.

[0046) As for the other auxiliary machine stiffening girders which are provided in the auxiliary machine installation space 106, for example, as illustrated in FiO-.l and FIG3, the auxiliary machine stiffening girder 114 which extends in the approximate center longitudinal direction of the auxtliary machine installation space 106 of the base 100 and the auxiliary machine stiffening girders 115 which extend in slant directions from the auxiliary machine stiffening girder 114 toward the auxiliary machine stiffening girders 113 at both side portions are installed in a trifurcate shape in a space of the auxiliary machine installation space 106. A start point of the trifurcate shape is positioned, in the top view, between the anti -vibrat ion mount 109 which is installed on the lower portion of the driven machine installation space 105 and the auxiliary machine, which is not illustrated, in the auxiliary machine installation space 105, so that the star..t point of the trifurcate shape can receive both loads of the weight of the auxiliary machine and the load supported by the anti-vibration mount 109.

[0047] Moreover, the auxiliary machine stiffening girders 113 which extend in the longitudinal direction at the both side portions are coupled to the auxiliary machine stiffening girder 114 ac tfle centex portun witn me auxi I:ary nach:ne stiffening girders 115 which extend in the slant directions from the auxiliary machine stiffening girder 114 at the center portion toward the auxiliary machine stiffening girders 113 at the both side portions, so that a stiffening member can be formed in the longitudinal direction and in the width direction inside the auxiliary machine installation space 106 only with the auxl J ary macnine st:ffening girders 115 whi ch extend in Lhe longitudinal direction (X direction) and in the width direction (Y direction) In other words, the auxiliary machine stiffening girders 115 are caused to extend in the longitudinal direction and in the width direction inside the auxiliary machine installation space 106 as the stiffening member to allow the rigidt In the longitu'nnal direction and an the width direction of the auxilrary machane nsta1lacion space sOG to he added.

[0048] Further1 in addition to the rigidity above, the auxiliary machine stiffening girders 115 which extend in the longitudinal direction (X direction) and in the width direction (Y direction) can also increase the rigidity with respect to the horizontal axial torque deformation in the XY direction. Further, the auxiliary machine stiffening girder 114 at the center portion is run through below the auxiliary machine in the auxiliary macnine nstallation space 106, so that the auxCiary nachine stiffening girder 114 can effectively support the weight of the auxiliary machine.

In addition, the auxiliary machine stiffening girders 113, 124 and l5 can be disposed so a tobe extended in the arbrrary directions in accordance with the weigthts and the arrangement of the auxiliary machines. This allows the adequate girders in accordance with the weights and the arrangement of the auxiliary machines to be provided in the auxiliary machine installation space 106.

[0049] Moreover, if it is considered that girders are installed so as to cover (he. positioned at) the lower portions of all the devices installed in the auxiliary machine installation space 106, the girders being installed in slant directions such as the auxiliary machine stiffening girders 115 can secure the necessary rigidity with the further reduced number of members and can reduce the more amount of the girders than the girders in the conventional art which are simply installed in a grid pattern in the longitudinal direction and in the width direction.

This can reduce the manufacturing cost, such as material expenses and assembly expenses, of the base 100, and the weight thereof.

[0050] The auxiliary machine stiffening girders 113 may he connected to the main girders 110, and be caused to extend in arbitrary directions of the base 100 in the auxiliary machine installation space 1.06. This allows the auxiliary machine stiffening girders 113, together with the main girders 110, to connect and support the loads in the driving machine installation space 104, the driven machine installation space 105, and the auxiliary machine installation space 106.

[0051] In addition, the auxiliary machine stiffening girders 113, 114 and 115 can have a lower rigidity than the main girders 110, similar to the main machine stiffening girders 111, 1flnd 112, and reduce the sizes in thickness, shape, and the like related to the section modulus indicating the rigidity, thereby saving maerials. This can reduce the amount of tbe girders, compared with a case where all the girders in the base 100 have the same rigidity as the main qirders 110, and can reduce the material expenses, the manufacturing cost related to the assembly, and the weight, of the girders.

[0052] W:tri r1 e abovemenrioned configuiat:on the proper mnber of girders each having a proper rigidity are arranged. at proper positions arid in proper directions, in the spaces of the driving machine installation space 104, the driven machine installation space 105, and the auxiliary machine installation space 106, The girders provided tn the entire base 100 are made to he proper in accordance with the driving machine, the driven machine, and the auxiliary machine to allow the number of manufacturing processes, the number of members, and the size to be reduced, thereby making it possible to reduce the manufacturing cost and the weight of the base 100.

[0053] <Placement of Base 100> FIG. 4 illustrates a placement example of the base 100 for installing a rotary machine according to the first embodiment of the present invention.

For example, the anti--vibration mounts 107, 105 and 109 of the base 100 are respectively lnsLalled on antivihration mount installation portions 121, 122 and 123 on a foundation that is a member for placement of a facility in which the rotary machine is used.

[0054] As for the facility in which the rotary machine is used, a floating facility floating at sea and a bottommounted facility fixed to the seafloor of an offshore plant, and various kinds of facilities of a land-based plant, and the like are assumed, and t:e-hase 100 of the present first embodiment is applicable to any of the facilities.

[0055J Further, wlen vibration and noise of the base 100 or the foundation 120 specially cause no problem, a part of a main body of the base 100 may be directly fixed to a base main body installation portion 124 on the foundation 120 with bolts, or may be embedded thereon by welding and tne like, wthou the anti-vibration mounts 107, 108 and 109 being provided. This case also needs the reduced number of girders as described in the foregoing, thereby exhibiting effects of reduction in cost and reduction in weight.

[0056] When differences between the configuration of the base in the present first embodiment and the configurations in the documents of the related technologies are listed, firstly, Patent Literature 1 employs the structure in which a Y-shaped girder which connects the three-point support positions is installed, and the support positions are considered but the arrangement of the devices on the base and the relation between the weights thereof and the girder are not considered.

[0057] In contrast, the base 100 in the present first embodiment includes the girders with the proper positions, directions, and rtgidity in consderation of, in addtn to the support positions by the girders, the arrangement and the weights of the motor 101 that is a driving machine, the step--up gear 102 and the compressor 103 that are drivers machines, other auxiliary machines, and the like, which are irisL-*lied on the base 100.

[0058] Moreover, Patent Literature 2 and Patent Literature 3 employ the structure in which the circular or rectangular tube that is a torque-absorbing member which restricts a torsion of the entire base is installed, which results in a complicated connection structure because a connection between the hollow-like torque-absorbing member and other members is difficult regardless of the reduced number of members, thereby increasing the manufacturing cost.

[0059] In contrast, the base 100 in the present first embodiment employs the structure in which the main girders 110 having a -ugh ngidty are installed on both side surface portions in the driving machine installation space 104 and the driven machine installation space 105, and cars achieve a high torque--absorbing structure which is also highly resistant to torsion with the simple structure.

[0060] ifl addition, the rigidity of the main machine stiffening girders ill, lIla and 112 and the a* -xiliary machine stiffening girders 113, 114 and 115 is made to be lower than that of the main girders 110 to reduce the use amount of the girders, thereby making it possible to reduce the manufacturing cost and the weights of the girders.

[0061] Further, H-shaped steel is generally used as the girders (110, 111, Illa, 112, 113, 114 and 115) which are installed n the snarts of the driving machine installation space 104, the driven machtne insta±lation space lOn, and the auxinary machine installation space 106 in the present first embodiment; however, steel of other various shapes, such as tshaped steel or Tshaped steel, or a plate may he used.

[0062] Moreover, the main girders 110, the main machine S stiffening girders ill, llla and 112, and the auxiliary machine stiffening girders 113, 114 and 115 may have different rigidities.

In addition, FIG, 1 to FIG.4 illustrate a tardem type base structure in which two compressors 103 are installed on the base 100; however, the present first embodiment (the present invention) is applicable to a singletype base structure in which one compressor 10:3 is installed.

(0063] <<Second Embodiment>> FIG. 5 is a perspective view of a base 200 for installing a rotary machine seen obliquely from below according to a second embodiment of the present invention. FIG.6 is a top view of the base 200 for installing a rotary machine according to the second embodiment.

The base 200 for installing a rotary machine (hereinafter, tefeired to as base 200) accord'g to the second emnodsment is configured to add a base hollow section 217 between a driving machine installation space 204 and a driven machine installation space 205. and to install an auxiliary machine 216 in the base hollow section 217.

[0064] Cf the hace 200 n the cecond ernbodwent, tne parts havang the same configuration and function as those of the base 100 in FIG.1 to FIG.4 in the first embodiment which have already been described are illustrated using a 200 reference numeral instead of a 100 reference numeral, and thus detailed

description thereof will be ornitted

(0065] FiG; 7: illustrates a coss-sectional view of the base: hefl s tc. fl7 viewed, fr afl A-A line dtoáS

FIG

The: hpllow çicti9n 217 is prôvidèd bSfwéêñ the: S &iA rnatthlse iflstaflati*n space 204 and ëS 4riven wachlne itii space S to itstall the a xi1i&?thahu1e 2:tG: aôi itión Whid &eS nt &ntetfere w&th a carneetlon shafl between a 4W nøz4iie such as a motor 201 End dtienthaohthi mmli as a step-up gear 202 and compressors 203 in other wd beLow e eL S:%* (006$] The regkvn e1pw the Sfl Otj: is efdtètt ithtd AS alt ftfStt:l l:atio P iOn f the awtiJiary: mactine flG t an itstaila t region, whtch is separately requited1 is of tte:at11iE±thhSte nç atiah: idispb8td: in an auxiliary machine installation space Cinst:aflaflon spacer of the auxiliary machine 21G:, and to redtzee Ia size of the base 2* as a whQle, thereby making: t posfble to reduce: the: we:isJ%t of 3: the aae fl9.

Mbreoter the members which ate dispçse in te Ps 2fl within t region of the base hl1OW segtion 217 become j:::3sa;: betaase the auxiliary machine 23 is; inflafle& thenky z:aing in the redued Wd4ht f the base 200.

(0*57] :25 In: addition, t4)e:awaliary maãhiné 2116 Is iltBtalled in the be h 11 Settiø: 217 at a aewer positIon Inside he base to allow a gavay center positSón of theaindiiá1hi 216 ith ±é4ét tb the base: 200 tb be lowered1 ompared with a. case where the auxiliary macbia2Z6 is installed on thS base 200, In this manner, lowering the gnyy q4 poition of the auxiliAry *hiI 316 in"Lde the",ee 200 aflows re6uctLon i mqment an of the atS4liary maafte:]i w4 napefl to the base 200 (arm length of the moment) This reduces the moment applied to the base 200 from the auxiliary machine 216, thereby making it possible to prevent the base 200 from being deformed.

[0068] FrLher, the plate member provided at an pper surface portion of the base 200 is eliminated due to the influence by the base hollow section 217, so that the rigidity of the base itself is lowered; however? the rigidity of the auxiliary machine 216 is added to the base because the auxiliary machine 0 216 15 installed i-tne nase hollow secticn 217 [0069] Moreover, in a case where the rigidity of the base hollow section 217 is insufficient, reinforcing girders 211k may be added at an outer circumference portion surraunding the base hollow section 217 and a bottom surface portion of the base hollow section 217, H-shaped steel, steel of another shape such as an I shape or a T shape, or a plate may he used as the reinforcing girders.

Further, the base hollow section 217 may he provided so as to penetrate through the base 200 in a height direction (Z axis direction) , or may he provided to a part in the height direction over the base 200 within a range as long as the auxiliary machine 216 does not interfere with the connection shaft 2Olj 10070] <<Third Embodiment>> FIG.8 illustrates a bottom view of a base 300 for installing a rotary machine according to a thrd embodiment -The base 300 for installing a rotary machine (hereinafter.

referred to as base 300) according to the third embodiment is configured such that girders are arranged at positions asymmetrical, whereas the girders of the bases 100, 200 in the first and second embodiments are arranged at positions symmetrical with base-width center lines lOOc, 200c.

Of the base 300 in FIG. 3, the parts having the same configuration and function as those of the base 100 in FIG. 1 to FIG4 in the first embodiment which have already been.

described are illustrated usinga 300 reference numeral instead of a 100 reference numeral, and thus description thereof will be omitted, [0071] The gravity centers of devices (a driving machine, a driven machine, and an auxiliary machine) installed on the base 300 are rarely located at positions symmetrical with a base--width center line 30Cc and the devices have different weights, so that the base 300 generally receives loads asymmetrical with the base-width center line 30Cc.

[0072] For example, as illustrated in FIG.2 and FIGG, in a case where the motors 101, 201 are coupled to the compressors 103, 203 via the step-up gears 102, 202, if the motors 101, 201 are disposed on the base-width center lines lOOc, 20Cc, the motor shaft centers lOb, 2Olc are respectively shifted from compressor shaft centers 103c, 203c because the step--up gears 102, 202 are present.

10073] Accordingly, if the motors 101, 201 are disposed on the base-width center lines 10Cc, 20Cc, the compressors 103, 203 are respectively disposed at the positions shifted from the nase-tdth center lines lOGo, 200c in other words, because the gravity centers of the contoressors are shifted from the bas-width centers 10Cc, 20Cc, the girders constituting the bases 100, 200 are also required to be respectively arranged, depending on the shifted positions, at positions asymmetrical with the basewidth centers 10Cc, 20Cc.

[0074] The present third embodiment illustrated in FIG. 8 illustrates an example in which, as for an overall gravity center 3040 of the devices in a driving machine installation apace 304, an overall gravity center 3050 of-the devices in a driven machine installation space 305, and an overall gravity center 3060 of the devices in an auxiliary machine installation apace 306, the gravity center 3040 is positioned at an upper aide of the base--width center line 300c, and the gravity centers 3050 and 3060 are positioned at a lower side of the base-width center Jine 300c.

[0075] Therefore, in the driving machine installation space 304 a main machine stiffening girder 311a is arranged so as to ncrcase the rigidity at the upper side of the nas-wdtn center line 300c depending on the gravity center position 304G. In other words, in consideration of the gravity center position 3040 of the driving machine installation space 304 in which a driving machine is installed and the weight of the driving machine, the main machine stiffening girder 3lla having a proper rigidity (size) is arranged at a position asymmetrical with the base--width center line 300c, In this manner, the girder having an adeq uate rigidity for supporting the weight of the driving machine and the weight at the gravity center position 3040 is arranged as the main machine stiffening girder 311a.

23 [0076] Moreover, in the driven machine installation space 305, a main machine stiffening qrder 312c Is arranged so as to increase the rigidity at the lower side of the base-width center line 300c deenoing on rhe yravty center positon 3050 In other words, in consideration of the gravity center position 3050 of the driven machine installation space 305 in which a driven machine is installed and the weight of the driven machine, the main machine stiffening girder 312c having a proper rigidity (size) is arranged at a position asymmetrical with the basewidth center lifle 30Cc [0077] Moreover, in the aux Aisry nachLne inca1lat ion space 306, auxiliary machine stiffening girders 314 and 315 are arranged so as to increase the rigidity at the lower side of the base-width center line 30Cc depending on the gravity center position 306G.

In other words, the girders 314, 315 of adequate rigidity for supporting the gravity center at the gravity center position 306(3 and supporting the weight of the auxiliary machine are arranged at positions asymmetrical with the base--width center line 30Cc, [0078] In this manner, in consideration of the gravity center positions 304G, 305G and 306(3 and the weights of the driving machine, the driven machine, and the auxiliary machine, the girders 3lla, 3l2c, 314 and 15 having a proper size are arranged at the positions asymmetrical with the base-width center line 300c to allow the rigidity of the base 300 to be improved and a member such as a redundant girder to he reduced, compared with a case vthere the girders are arranged at positions symmetrical with the base-width center line 30Cc.. This can reduce the weight of the base 300.

(0079] Further, also in the structure of the base 300, respectively installed may be main girders 310 and main machine stiffening girders 311 and 312 in the driving machine installation, space 304 and the driven machine installation space 305 and auxiliary machine stiffening girders 313 in the auxiliary machine insal1ation space 06, and the nan machine stffcning girders 311 and 32 and the auxti tary machine stiffening girders 313 may have a rigidity lower than the rigidity of the main girders 310.

Moreover, the main machine stiffening girders 311a and 312c and the auxiliary machine stiffening girders 314 and 315 may have rigidity lower than the rigidity of the main girders 310.

[0080] ccFourth Embodiment>> F109 illustrates a bottom view of a base bOA for installing a rotary machine in af iret example according to a fourth embodiment.

The base bOA for installing a rotary machine (hereinafter, referred to as base lOOM in the first example according to the fourth embodiment is installed such that main machine stiffening girders ll2a extend while widening in slant directions from the attached part of the anti-vibration mount 109 below the compressor 103 toward the anti-vibration mounts 107 and 108 on the main girders 110, and are thus formed in a n shape, and are connected to the attached parts of the ant-vbrat:cn mount l0 and the anti. vibration mount 108 Since the other configurations of the base bOA are configurations similar to th.e base 100 in the first embodiment, they are given the same reference numerals and. thus detailed

description thereof will be omitted.

[0081] With this, the main machine stiffening girders 112a are configured to couple the three-point support anti-vibration mounts 107, 108 and 109 of the base bOA, thereby making it possible to achieve tile base 1001k with the further increased rigidity with respect to a load in the XY direction of the driving machine installation space 104 and the driven machine installation space 105 (the horizontal direction of the base 1001k) or axial torsion in the XY direction (the horizontal direct ion of the base bOA) £0082] FIG.10 illustrates a bottom view of a base 200A for installing a rotary machine in a second exaarpie according to the Lourth embodiment The base 200A for installing a rotary machine (hereinafter, referred to as a base 200A) in the second example according to the fourth embodiment is installed such that main machine stiffening girders 212a extend while widening in slant directions from an attached part of an anti--vibration mount 209 below tt.e compressor 203 toward anti-vibration mounts 207 and 203 on main girders 210, and are thus formed in a n shape, and are connected to attached parts of the anti--vibration mount 207 and anti-vibration mount 208.

Since the other configurations of the base 200A are cnfiguratons similar:o LnebasL 200 in the seconaerihodment, is they are given the same reference numerals and thus detailed

description thereof will be omitted.

[0083] with t:his, the main machine stiffening girders 212a are configured to couple the three-point upporr anLvibration mounts 207, 208 and 209 of the base 200A, thereby makinq it possible to achieve the base 200A with the further increased rigidity with respect to a load in the XY direction of the driving machine installation space 204 and the driven machine installation space 205 (the horizontal direction of the base 200A) or axial torsion in the XY direction (the horizontal direction of the base 200A) [0084] FicLIl illustrates a bottom view of a base 300A for installing a rotary machine in a third example according to the fourth embodiment.

The base 3 OOA for installing a rotary machine (hereinafter, referred to as base 300A) in the third example according to the fourth errodiment is installed such that main machine stiffening girders 312a extend while widening irs slant directions from attached parts of an anti-vibration mount 309 below compressors 303 toward an anti-vibration mount 307 and an anti-vibration mount 308 of the main girders 310, and are S thus formed in a r shape, and are connected to the attached parts of the anti-vibration mount 307 and the anti-vibration mount 308.

Since the other configurations of the base 300A are configurations similar to the base 300 in the third embodiment, they are qiven the same reference numerals and thus detailed

description thereof wlll be omitted.

[0085] With this, the main machine stiffening girders 312a are configured to couple the three-point support anti-vibration mounts 307, 308 and 309 of the base 300A, thereby making it possible to achieve the base 300A with the further increased rigidity with respect to a load in the XY direction of the driving machine installation, space 304 and the driven machine installation Lpace 305 the honzonta direction of the base 300A) or axial torsion in the XY direction (the horizontal direction of the base 300A) (0086] With the bases 100, 200, 300, bOA, 200A, 300A in which the motors 101, 201, 301, the turbomachines or compressors 10:3, 203, 303, and the like are installed in the first to fourth embodiments, in consideration of the arrangement of the devices on the bases and the weight relations thereof, and the loads, girders having a proper rigidity vhich support the devices at proper positions are arranged to restrict the excessive rigidity in the bases, thereby making it possible to reduce the manufacturing costs and the weights of the bases.

[0087) Moreover, the girder arrangement in the bases 100, 200, 300, bOA, 200A, 300A in which influences by marine loads such as waves and winds are considered can be mounted on an offshore floating facility or bottom-mounted facility. Moreover, as described in the foregoing, the girder arrangement in the bases 100, 200, 300, bOA, 200A, 300A can be also mounted on. a land foundation, Also in these cases, the functional effects having explained can be obtained, [0088] <<Other embodiments>> Further, although the various configurations have been respectively explained in the first to fourth embodiments, these configurations may be combined as appropriate to configure a base f or installing a rotary machine.

Moreover. both side surface portions in the driving machine installation space and the driven machine installation space in claims 1 and 3 include the vicinity of the both side surfaces of the bases 100, 200, 300, bOA, 200A, 300A.

[0089] Although various embodiments of the present invention have been described above, various variations and modifications can be made within the scope of the present invention. In other words, specific forms of the present invention can be appropriately and arbitrarily changed within the range not changing the gist of the present invention.

Reference Signs List [0090] 100, 200, 300, bOA, 200A, 300A: Ease for installing rotary machine 101, 201, 301: Motor (Driving machine) 102, 202, 302: Step-up gear (Driven machine) 103, 203, 303; Compressor (Driven machine) 104, 204, 304: Driving machine installation space 105, 205, 305; Driven machine installation space 106, 206, 306: Auxiliary machine installation space 107, 108, 109, 207, 20, 209, 307, 308, 309: Anti--vibration mount 110, 210, 310: Main girder 111, 112, 211, 212, 311, 312, 312c: Main r.achine stiffening girder (Stiffening girder) 113, 114, 115, 213, 214, 215, 313, 314,315: Auxiliary machine stiffening girder 120: Foundation 215: Base hollow section (Hollow section 216: Auxiliary machine 30Cc Dase-width centei line

Claims (12)

1. CLAIMS1. A base for installing a rotary machine, comprising: a driving machine installation space in which a driving machine is installed; a driven machine installation space in which a driven machine driven by the driving machine is ins tailed; an auxiliary machine installation space in which an auxiliary mach.ir.e other than the driving machine and the driven nachne is nsta..led, antivhration mounts having an elasticity and a damping action, two of the antivihration mounts being installed on a lower portion of the driving machine installation space and one of the anti--vibration mounts being installed on a lower portion of the driven machine installation spate; main girders which are installed on both side surface portions in the driving machine installation space and the driven machine installation space and extend in a longitudinal direction thereof; and at least one stiffening girder which is installed in addition to the main girders.
2. 2. The base for installing a rotary machine, according to claim 1, wherein the stiffening girder has a lower rigidity than the main girders.
3. 3. A base for installing-a rotary machine, comprising: a driving machine installation space in which a driving machine is installed; a driven machine installation space in which a driven machine driven by the driving machine is installed; an auxiliary machine installation space in which an auxiliary machine other than the driving machine and the driven machine is installed; main girders which are installed on both side surface portions in the driving machine installation space and the driven machine installation space and extend in a longitudinal direction thereof, arid at least one stiffening girder which is installed in addition to the main girders, wherein the stiffenng girder has a 1 cwr rigid ty than the rnaan girders.
4. 4. The base for installing a rotary machine, according to any one of claim 1 to claim 3, wherein the stiffening girder is a main machine stiffening girder whcri extends in an arbUicry direction in the thrving nact2inc installation space and the driven machine installation space, or an auxiliary machine stiffening girder which extends in an arbitrary direction n the auxiliary machine installation space.
5. 5. The base for installing a rotary machine, according to claim 4, wherein the main machine stiffening girders extend while widening in slant directions toward the both main girders from a start point which is an edge portion in the longitudinal direction of the driven machine installation space and a center lower portion in a width direction thereof, and are fixed to the both main girders and configured in an shape in a top view.
6. 6. The base for installing a rotary machine1 according to claim 1, wherein the stiffening girder has a lower rigidity than the main girders, and the stiffening girder is a main machine stiffening girder which extends in an arbitrary direction in the driving machine installation space and the driven machine installation space, or an auxiliary machine stiffening girder which extends in an arbitrary direction in the auxiliary machine installation I' space; and théáiiiöhiât Etiffehitiq 4itdets 4Mtndt1e widettiny in slant dlnctipns toward i' gir4es rP'!J a point which îó att&diid pá±t of the a±ti-YibfltiCfl mouzit installed In the driven machine Initallation sce and extend in directions to oineet ttAah& pa±ts ttt*c. aati-tibtatic mounts installed on the lpwer ppri4pn In the drfying ç4 installation SpáöE.
7. 7. The base for instafling a ±àary ina4tine, acer1ng to :P ciab'n rç the auxtiiary mOhine si±fenir*g girder is cc ct'ø to and extends in al atbit±th; tn:ttot c ute I: baast in the auriliaty maethine inathilation space.
8. 8. The bate for tnst*liing a rotary m&thth, attarding to diith 4, whttèin the apzt)4azy ic in. flifei:lig g rdér i e&t:tiquted H a tri:froate shape in a top flew by a girder whidh ext:erids in the lqngiudlnal d ti of an approximate center $itioii in the\idth di&UOi tf the se, atd fltdets.,hiah extend while widening in rigi* .n4. ]ft S]4: ectip'lS from a Start Øtit which is a part of the girder extending in the 1ongitu4iná2 direct ion.
9. 9. The baa f fit tailing a rotax machine, accordng tQ ca±m 1, v4aerein the stiffening gIitE± has a id*è& ti'Ld±tt bhat the main flrders, arid the stitttiing gi±dèt iSa itatt.thihe Stifftth gitdst, whSettexids an arbitrary.rect±on in the drSviag mairze ins taflatio space an4 thef driven Ptaciiitte Installation space1 o or an awcflzary mac1u.ne stiftening girder whach extends in an a*tran' direct4pn 4: e auxiliary madhlñt i±àtai]AtSi space p the aim: l*nyrna*t:a 9tU:enifl9$:*rder is aoMiqteu in a trifurcate shape in a top view by a girder which extends in the longitudinal direction of art approximate center portion in the width direction of the base, and girders which extend while widening in right arid left slant directions from a start point S which is a part of the girder extending in the longitudinal direction; and the start point is positioned, in the top view, between the anti-vibration mount installed on the lower portion in the driven machine installation space and the auxiliary machine in the auxiliary machine installation space.
10. 10, The base for installing a rotary machine, according to claim 8, wherein the auxiliary machine stiffening girder runs through below the auxiliary machine in the auxiliary machine installation space.
11. 11, The base for installing a rotary machine, according to any one of claim 1 to claim 3, claim 6 or claim 9, wherein a hollow section is provided between the driving machine and he dnien machine, and the aunliary nachne is natalicd in the hollow section.
12. 12. The base for installing a rotary machine, according to claim 11, w:nerein a reinforcing girder for reinforcing the hollow section iS Installed on either OtO Cr both of an otter circun'feience portion and a bottom surface portion of the hollow section, 13 The base for nta1ng a rotarvmacdane, accorcAing to any one of claim 1 to claim 3, claim 6 or claim 9, wherein the main girders and the stiffening girder are installed at positions right--left asymmetrical with a center line in the width direction or in the longitudinal direction of the base for installing a rotary machine, 14, The base for installing a rotary machine, according to any one of claim 1 to claim 3, claim 6 or claim 9, wherein the base is placed in an offshore floating facility or a bottom--mounted facility.15. The base for installing a rotary machine, according to any one of claim I to claim 3, claim 5 or claim 9, wherein S the base is placed in a land foundation.16. The base for installing a rotary machine, according to any one of claim 1 to claim 3, claim S or claim 9, wherein a motor, a turbomachine or a compressor is installed on the base for installing a rotary machine. *1S