CN106104006A - The manufacture method of centrifugal compressor, booster and centrifugal compressor - Google Patents

Abstract

The present invention provides a kind of centrifugal compressor (10), possesses: be installed on armature spindle (30) and compression from inlet port (11a) leaked-in air and makes its impeller (11) discharged from outlet (11b)；The air housing impeller (11) guides cylinder (12)；It is configured at the scroll portion (13) that air guides the outer circumferential side of cylinder (12) and the compressed air for discharging to flow into from outlet (11b)；Upstream side and multiple demarcation strips (14) of length on the axis X direction of armature spindle (30) with regulation relative to the circulating direction that inlet port (11a) is arranged at air；And there is the muffler (15) of the silencer casing (15a) housing multiple demarcation strips, multiple demarcation strips (14) radially configure centered on axis (X), and be thickness of slab be more than 4mm and for the rolled steel of below 9mm.

Description

The manufacture method of centrifugal compressor, booster and centrifugal compressor

Technical field

The present invention relates to the manufacture method of centrifugal compressor, booster and centrifugal compressor.

Background technology

In the past, it is known that a kind of centrifugal compressor (referring for example to patent document 1), as being fed to what boats and ships etc. were used The air of internal combustion engine brings up to the compressor of the booster of more than atmospheric pressure.Centrifugal compressor possesses the leaf being installed on armature spindle Wheel, the scroll portion guiding cylinder and the compressed air discharged from guiding cylinder to be flowed into housing impeller.Centrifugal compressor compression is from entering Entrance leaked-in air in the axial direction simultaneously guides to the direction tilting from axis direction and discharges compressed air from outlet.

In centrifugal compressor, it is possible to occur because high-speed rotary then the impact of the centrifugal force of generation cause of impeller Divide explosion or the unfavorable condition coming off.Patent Document 2 discloses rushing of a kind of fuel tank being provided with protection collecting lubricating oil Hit the centrifugal compressor absorbing next door, though the feelings dispersed outward because of centrifugal force in the part of impeller (compressor impeller) Under condition, also lubricating oil will be made to spill because of the impeller that disperses.

Prior art literature

Patent document

Patent document 1: Japanese Unexamined Patent Publication 2011-117417 publication

Patent document 2: Japanese Unexamined Patent Publication 2001-132465 publication

In centrifugal compressor disclosed in patent document 2, the impact at the centrifugal force occurring because of high-speed rotary then producing is led Cause impeller a part explosion or come off unfavorable condition when, protection house lubricating oil fuel tank.

But, impeller all or part of burst or come off and with guide cylinder collision in the case of, due to this impact Loading is relatively big and makes guiding cylinder damaged, have guide all or part of of cylinder with impeller all or part of together with fly to outside The possibility dissipating.Even if in addition, in the case of guiding cylinder unbroken, also having guiding cylinder entirety or one part from installation site Come off, the possibility dispersed to the direction away from scroll portion along the axis of armature spindle.In this case, the whole of cylinder or are guided Part is dispersed and is caused the generation gap, local (opening) at centrifugal compressor, and the part having impeller damaged is outside from this gap The possibility dispersed in portion.

Content of the invention

The present invention completes in view of such situation, its object is to provide a kind of centrifugal compressor, is guiding cylinder All or part of burst with all or part of of impeller or come off and in the case of disperse, the complete of impeller can be suppressed The unfavorable condition that portion or a part are dispersed to outside.

In addition, it is an object of the invention to provide a kind of booster having possessed above-mentioned centrifugal compressor and above-mentioned from The manufacture method of heart compressor.

For solving the means of problem

In order to reach above-mentioned purpose, the present invention uses following means.

The centrifugal compressor of the 1st aspect of the present invention is characterised by possessing: impeller, and this impeller is installed on armature spindle, and Compression is from the fluid of inlet port inflow and discharges this fluid from outlet；Guiding cylinder, this guiding cylinder houses this impeller；Vortex Portion, this scroll portion is configured at the outer circumferential side of this guiding cylinder, and the flow of compressed fluid for discharging from described outlet enters；Multiple separations Plate, this demarcation strip is arranged on the upstream side of the circulating direction of fluid relative to described inlet port, and at the axis of described armature spindle There is on direction the length of regulation；And muffler, this muffler has the silencer casing housing the plurality of demarcation strip, described Multiple demarcation strips radially configure centered on described axis, and this demarcation strip be thickness of slab be more than 4mm and below 9mm Rolled steel.

According to the centrifugal compressor of the 1st aspect of the present invention, in all or part of situation bursting or coming off of impeller Under, all or part of of impeller disperses, and collides with guiding cylinder.Cylinder is guided to be formed the axis direction along armature spindle from inlet port The fluid flowing into guides to the direction tilting from axis direction and guides the stream of outlet.Complete when the impeller dispersing to radial direction Portion or a part, with when guiding cylinder collision, apply the impact of radial direction at guiding cylinder.Same, when the impeller dispersing to axis direction All or part of with guide cylinder collision when, guide cylinder apply axis direction impact.The impact of axis direction is to make to draw All or part of impact dispersed to the direction away from scroll portion of guide, therefore have guide cylinder all or part of from peace The possibility that holding position comes off.

According to the centrifugal compressor of the 1st aspect of the present invention, at the upstream side of circulating direction of the fluid of inlet port, Length multiple demarcation strip on axis direction with regulation radially configures centered on axis.Therefore, the impeller dispersing All or part of, the produced impact of dispersing of impeller cause the air dispersing to the direction away from scroll portion to guide cylinder All or part of collides with the multiple demarcation strip being contained in silencer casing.Multiple demarcation strips are that thickness of slab is more than 4mm and is The rolled steel of below 9mm, is suitably plastically deformed owing to guiding all or part of collision of cylinder, absorbs what collision produced Energy.Thereby, it is possible to suppress following unfavorable condition: all or part of of guiding cylinder disperses thus in the local of centrifugal compressor Producing gap, all or part of of impeller disperses from this gap to outside.

In the centrifugal compressor of the 1st aspect of the present invention, it is preferred that described scroll portion has volute case, this whirlpool Rotation shell forms volute room, this volute case and the described silencer casing being flowed into from the compression fluid that described outlet is discharged Multiple first restraint locations in the circumference around described axis pass through multiple first fastening bolts extending along described axis direction Being fastened, described volute case and described silencer casing are that the first cylindric distance member is inserted into described first is tight Being fastened in the state of the axle portion of fixing bolt, the internal diameter of described first distance member is than the head of described first fastening bolt Diameter is little.

According to the centrifugal compressor of this structure, when all or part of of the guiding cylinder dispersing to the direction away from scroll portion When colliding with the silencer casing housing demarcation strip, silencer casing is being applied from the direction that volute case zooms out impact. This impact carries out shrinking by the first tubular distance piece being configured between the head of the first fastening bolt and silencer casing is inhaled Receive.For example, as the first distance member, use and have until the rolled steel of the ductility destroyed after bigger being plastically deformed Material such that it is able to absorb the kinetic energy that axial impact produces.So, quilt in the state of inserting the first fastening bolt is utilized First tubular distance piece of fastening absorbs the impact of axis direction, thus suppresses the unfavorable condition of the first fastening bolt explosion.By This, can suppress following unfavorable condition: guide all or part of the dispersing of cylinder to cause producing in the local of centrifugal compressor Gap, all or part of of impeller disperses from this gap to outside.

In the centrifugal compressor of said structure, it is preferred that described first fastening bolt possesses and is formed at described axle portion From described head to the external screw thread of the outer peripheral face of top ends.

By doing that such that it is able to utilize the first fastening bolt, above-mentioned unfavorable condition is suppressed, this first fastening bolt Uniformly thus increase the energy absorption of impact by making the deformation everywhere of the outer peripheral face in the axle portion from head to top ends.

In the centrifugal compressor of said structure, it is preferred that possess bearing block, this bearing block has the described rotor of supporting The bearing portion of axle and the flange part of the described scroll portion of supporting, this flange part and described volute case are around multiple the of described axis Two restraint locations are fastened by multiple second fastening bolts extending along described axis direction, described flange part and described vortex Shell is to be fastened in the state of the second cylindric distance member is inserted into the axle portion of described second fastening bolt, institute The internal diameter stating the second distance member is less than the diameter of the head of described second fastening bolt.

According to the centrifugal compressor of the manner, when all or part of of the guiding cylinder dispersing to the direction away from scroll portion When colliding with the silencer casing housing demarcation strip, rushing of the direction that volute case is zoomed out by applying from the flange part of bearing block Hit.This impact carries out shrinking by the second tubular distance piece being configured between the head of the second fastening bolt and volute case is inhaled Receive.So, the second tubular distance piece being fastened in the state of inserting the second fastening bolt is utilized to absorb axis direction Impact, thus suppress second fastening bolt explosion unfavorable condition.Thereby, it is possible to suppress following unfavorable condition: guide cylinder The all or part of generation gap, local causing at centrifugal compressor of dispersing, all or part of of impeller from this gap to Disperse in outside.

In the centrifugal compressor of aforesaid way, it is preferred that described second fastening bolt possesses and is formed at described axle portion From described head to the external screw thread of the outer peripheral face of top ends.

By doing that such that it is able to utilize the second fastening bolt, above-mentioned unfavorable condition is suppressed, this second fastening bolt Uniformly thus increase the energy absorption of impact by making the deformation everywhere of the outer peripheral face in the axle portion from head to top ends.

The centrifugal compressor of the 2nd aspect of the present invention is characterised by possessing: impeller, and this impeller is installed on armature spindle, and Compression is from the fluid of inlet port inflow and discharges this fluid from outlet；Guiding cylinder, this guiding cylinder houses this impeller；Vortex Portion, this scroll portion is configured at the outer circumferential side of this guiding cylinder, and has volute case, and this volute case is formed from described outlet row The volute room that the compression fluid going out is flowed into；Bearing block, this bearing block has bearing portion and the supporting institute supporting described armature spindle State the flange part of scroll portion；The multiple flange part fastening bolts extending along described axis direction, the plurality of flange part fastening bolt By described flange part and described volute case at multiple restraint locations of the axis around described armature spindle；And multiple clamping part, This clamping part have from outer circumferential side surround the periphery edge of described flange part and the periphery edge of described volute case recess, And to this recess opening and the through hole extending along described axis direction, any one party in described flange part or described volute case Circumference around described axis has multiple fastener hole extending along described axis direction, outside described flange part or described vortex Any one party in shell and described clamping part are by being inserted in the clamping part fastening bolt of described through hole and described fastener hole Fastened, the end face of the described axis direction of any the opposing party in described flange part or described volute case and described recess Described axis direction end face between be provided with the gap of regulation.

According to the centrifugal compressor of the 2nd aspect of the present invention, even if making bearing block in the explosion of multiple flange part fastening bolts Flange part in the case of separate with volute case, the end face of the axis direction of any the opposing party in flange part or volute case Also the end contact of the axis direction with recess.The produced impact of this contact is multiple by be installed in the circumference of axis Clamping part is absorbed.Thereby, it is possible to suppress following unfavorable condition: all or part of the dispersing of impeller causes in centrifugal pressure The generation gap, local of contracting machine, all or part of of impeller disperses from this gap to outside.

In aforesaid way, it is preferred that described flange part has described fastener hole, and passes through institute with described clamping part State clamping part fastening bolt to be fastened, at the described axle of end face and described recess of the described axis direction of described volute case Being provided with the gap of regulation between the end face in line direction, described flange part has connection contact surface and the end face of described flange part Stage portion, this contact surface contacts with described volute case, and this end face forms the second flow path that described compression fluid is circulated, and phase Described second trackside is configured at for described contact surface.

By doing so it is possible, make the flange part of bearing block separate with volute case in the explosion of multiple flange part fastening bolts, whirlpool In the case of the end contact of the axis direction of end face and the recess of the axis direction of rotation shell, by the existence of stage portion thus Opening between suppression flange part and volute case.

Further, by making the width width in gap that the width ratio of the axis direction of stage portion specifies such that it is able to more reliable Ground suppression opening.

The booster of the present invention is characterised by possessing: the centrifugal compressor described in any of the above-described item；And turbine, this turbine Rotated around described axis by the exhaust discharged from internal combustion engine, and this turbine is linked to described armature spindle.

According to the booster of the present invention, following unfavorable condition can be suppressed: the guiding cylinder that centrifugal compressor is possessed disperses Causing the generation gap, local at centrifugal compressor, a part for impeller is dispersed from this gap to outside.

The manufacture method of the centrifugal compressor of the present invention is characterised by possessing following operation: impeller is installed to armature spindle Operation, this fluid is simultaneously discharged by the fluid that this wheel compresses flows into from inlet port from outlet；To house the side of described impeller Formula installs the operation guiding cylinder and forming the stream of outlet described in the direct fluid that will flow into from described inlet port；Will be from described The scroll portion that the compression fluid that outlet is discharged is flowed into is configured to the radial direction orthogonal with described axis direction of described guiding cylinder The operation of outer circumferential side；And be more than 4mm by thickness of slab and be arranged at relative to described inlet port for multiple demarcation strips of below 9mm The upstream side of the circulating direction of fluid and by the plurality of demarcation strip in the way of there is the length of regulation at described axis direction The operation radially configuring centered on described axis.

According to the centrifugal compressor being manufactured by the manufacture method of the present invention, all or part of of impeller bursts or comes off In the case of, all or part of of impeller disperses, and collides with guiding cylinder.Guide cylinder formed by along armature spindle axis direction from The fluid that inlet port flows into guides to the direction tilting from axis direction and guides the stream of outlet.Therefore, when flying to radial direction All or part of of the impeller dissipating, with when guiding cylinder collision, applies the impact of radial direction at guiding cylinder.Same, when to axis side To the impeller dispersing all or part of with guide cylinder collision when, guide cylinder apply axis direction impact.Axis direction Impact be all or part of impact dispersed to the direction away from scroll portion making guiding cylinder, therefore have guide cylinder whole Or the possibility that a part comes off from installation site.

According to the centrifugal compressor being manufactured by the manufacture method of the present invention, multiple demarcation strips are radially joined around axis It is placed in the upstream side of the circulating direction of the fluid of inlet port.Therefore, the impeller dispersing all or part of, the institute of dispersing of impeller The impact producing cause the air that disperses to the direction away from scroll portion guide cylinder all or part of be contained in muffler Multiple demarcation strip collision of shell.Multiple demarcation strips be thickness of slab be more than 4mm and for the rolled steel of below 9mm, owing to guiding All or part of of cylinder collides and is suitably plastically deformed, and absorbs the energy that collision produces.Thereby, it is possible to suppression is bad as follows Situation: all or part of guiding cylinder disperses thus in the generation gap, local of centrifugal compressor, impeller whole or one Divide and disperse to outside from this gap.

Invention effect

In accordance with the invention it is possible to provide a kind of centrifugal compressor, guiding complete with impeller of all or part of of cylinder Portion or part explosion or in the case of come off and disperse, that can suppress that all or part of of impeller disperse to outside is bad Situation.

In addition, in accordance with the invention it is possible to provide a kind of booster having possessed above-mentioned centrifugal compressor and above-mentioned from The manufacture method of heart compressor.

Brief description

Fig. 1 is the longitudinal section of the embodiment representing booster.

Fig. 2 is that the A-A of the muffler shown in Fig. 1 is to arrow sectional view.

Fig. 3 is that the B-B of the muffler shown in Fig. 2 is to arrow sectional view.

Fig. 4 is the partial enlarged drawing near the restraint location representing the silencer casing shown in Fig. 1 and volute case.

Fig. 5 is the partial enlarged drawing near the restraint location representing the volute case shown in Fig. 1 and flange part.

Fig. 6 is the figure of the periphery edge observing volute case and flange part from the P direction shown in Fig. 1.

Fig. 7 be the C-C of the periphery edge of the volute case shown in Fig. 6 and flange part to arrow sectional view, be to represent outside vortex The figure of the state that shell contacts with flange part.

Fig. 8 be the C-C of the periphery edge of the volute case shown in Fig. 6 and flange part to arrow sectional view, be to represent outside vortex Shell and flange portion from the figure of state.

Symbol description

10 centrifugal compressors

11 impellers

11a inlet port

11b outlet

11d blade

11e stream

12 air guide cylinder (guiding cylinder)

13 scroll portion

13b volute case

13d flange part

13f flange part

13h stream (second flow path)

13i end face

14 demarcation strips

15 mufflers

15a silencer casing

15b stream (first flow path)

15c flange part

20 bearing blocks

20a flange part

20e contact surface

20f end face

20g stage portion

30 armature spindles

40 fastening bolts (the first fastening bolt)

41 fastening bolts (the second fastening bolt；Flange part fastening bolt)

43 fastening bolts (the 3rd fastening bolt；Clamping part fastening bolt)

50 tubular distance pieces (the first distance member)

51 tubular distance pieces (the second distance member)

60 clamping parts

60a recess

60b through hole

60c gap

60d gap

60e end face

100 boosters

Detailed description of the invention

Referring to the drawings the booster 100 of present embodiment is illustrated.

The booster 100 of present embodiment is following device: be fed to the marine diesel (internal combustion engine) for boats and ships Air (gas) be increased to more than atmospheric pressure, thus improve the efficiency of combustion of marine diesel.

As it is shown in figure 1, the booster 100 of present embodiment possesses centrifugal compressor the 10th, turbine (omitting diagram) and bearing Seat 20.Centrifugal compressor 10 and turbine are linked to armature spindle 30 respectively.Armature spindle 30 passes through bearing block 20 can revolve around axis X The state turning is supported by.

Centrifugal compressor 10 is following device: compression is from the outside leaked-in air of booster 100, by the air of compression (hereinafter referred to as compressed air (compression fluid)) supply is to the inside with the cylinder jacket (omitting diagram) constituting marine diesel even Logical inlet manifold (omitting diagram).Centrifugal compressor 10 possesses impeller the 11st, air and guides cylinder 12 (guiding cylinder), scroll portion the 13rd, Demarcation strip 14 and muffler 15.

In the booster 100 of present embodiment, guide the exhaust discharged from marine diesel to turbine, make to be mounted with The turbine disk of the turbine wing rotates around axis X.The impeller 11 linking via armature spindle 30 rotates with the rotation of the turbine disk, from entering Entrance 11a leaked-in air is compressed, and compressed air is discharged from outlet 11b.The compressed air stream discharged from outlet 11b Enter scroll portion 13, and be directed to the inlet manifold of marine diesel.

Air guides cylinder 12 and scroll portion 13 due to the shape of formation complexity by the metal parts being manufactured by casting Constitute.As this metal parts, for example, use with iron as principal component and the cast iron of Fe-C system alloy of carbon containing more than 2%.As long as It is cast iron, then can use the various materials such as casting pig, but the spheroidal graphite of the black smoke spheroidizing in Base Of Preferrence tissue is cast Iron (FCD:Ferrum Casting Ductile).The metal material that casting is formed easily forms the shape of complexity because of cast molding Shape, but then, has crisp characteristic.

Then, each structure possessing centrifugal compressor 10 illustrates.

As it is shown in figure 1, impeller 11 is installed on the armature spindle 30 extending along axis X, and adjoint armature spindle 30 is around the rotation of axis X Then rotate around axis X.Rotated around axis X by impeller 11, compress from inlet port 11a leaked-in air and make it from discharge Mouth 11b discharges.

As it is shown in figure 1, impeller 11 possesses and is installed on the wheel hub 11c of armature spindle 30, is installed on the outer peripheral face of wheel hub 11c Blade 11d and stream 11e.It is provided with the outer peripheral face of wheel hub 11c and the inner peripheral surface delimitation of air guiding cylinder 12 at impeller 11 Space, this space is separated into multiple space by more blades 11d.Further, impeller 11 is to along axis X direction from inlet port 11a Leaked-in air applies the centrifugal force of radial direction and makes it to direction (radial direction of the impeller 11) row orthogonal with axis X direction Go out, make to flow into diffuser 13a from the compressed air that outlet 11b discharges.

It is such as lower component that air guides cylinder 12: house impeller 11, and makes axis X direction along armature spindle 30 from inlet port 11a leaked-in air is discharged from outlet 11b.Air guides cylinder 12 to constitute stream 11e, this stream 11e edge together with impeller 11 The orthogonal radial directed of axis X from inlet port 11a leaked-in air and is directed to outlet 11b along axis X.

Scroll portion 13 is following device: makes to flow into from the compressed air that outlet 11b discharges, and will be given to compression sky The kinetic energy (dynamic pressure) of gas is transformed to pressure energy (static pressure).Scroll portion 13 be configured at air guide cylinder 12 with axis X direction just The outer circumferential side of the radial direction handed over.

Scroll portion 13 possesses diffuser 13a, volute case 13b and volute room 13c.Volute room 13c is by volute case 13b The space being formed.As in figure 2 it is shown, the flange part 20a that volute case 13b is linked to bearing block 20 by fastening bolt 41.

Diffuser 13a is arranged in the aerofoil member in the downstream of the outlet 11b of impeller 11, formed by compressed air from Outlet 11b guides to the stream of volute room 13c.Diffuser 13a is to surround the compressed-air actuated of the complete cycle being arranged at impeller 11 The mode of outlet 11b is set.

Diffuser 13a is slowed down by making the compressed-air actuated flow velocity of the outlet 11b discharge from impeller 11, thus will give Compressed-air actuated kinetic energy (dynamic pressure) is transformed to pressure energy (static pressure).Compression after flow velocity is decelerated when by diffuser 13a Air flows into the volute room 13c connecting with diffuser 13a.The action fluid flowing into volute room 13c (saves sketch map to discharging pipe arrangement Show) discharge.

Demarcation strip 14 is following plate-shaped member: be arranged at the upstream side of the circulating direction of air relative to inlet port 11a, and Axis X direction has the length of regulation.As in figure 2 it is shown, demarcation strip 14 is by four demarcation strip 14a, 14b, 14c, 14d structures Become.Four demarcation strips 14a, 14b, 14c, 14d radially configure centered on axis X.Demarcation strip 14 is designed to conduct Absorb the impact absorbing material function of impact guiding all or part of of cylinder 12 to collide with air and producing.In addition, Demarcation strip 14 supports the silencer casing 15a of muffler 15, and also serves as carrying out rectification to the air of circulation in muffler 15 Cowling panel function.

As it is shown on figure 3, the cross section along axis X of demarcation strip 14b is rectangle longer on axis X direction.In figure 3 Only diagram demarcation strip 14b, but other demarcation strips 14a, 14c, 14d are also respectively identical cross sectional shape.

Demarcation strip 14 is made up of the metal parts being manufactured by rolling.As this metal parts, for example, use with iron is Principal component and the rolled steel of the Fe-C system alloy containing trace (about 0.2%) carbon.As long as rolled steel, then can use each Plant the material of various kinds, but rolled steel for general structure (the JIS G3101 of referred to as SS400 is preferably used；ASTM A283).

The metal material that rolling is formed is constituted by being suitable for forming of rolling process, has straight after bigger being plastically deformed To the ductility destroyed.On the other hand, the metal material that casting is formed is constituted by being suitable for forming of casting process, until destroying Elongation than rolling formed metal material little.So, what rolling was formed is metal material until the elongation of destruction Bigger than the metal material that casting is formed, i.e. ductility is high.Therefore, the metal material that rolling is formed has the gold being formed than casting Belong to the characteristic of the high breakdown strength to impact of material.

For example, under normal temperature, ductile cast iron material and SS400 material are respectively provided with 400～500N/mm²The tensile strength of left and right. On the other hand, ductile cast iron material has an elongation at break of about 10%, on the other hand, S400 material have 20% with On.Therefore, the ductility of SS400 material is higher than ductile cast iron material.

In the centrifugal compressor 10 of present embodiment, if all or part of explosion or de-of the blade 11d of impeller 11 Fall and disperse to radial direction, then guide cylinder 12 to collide with air.The stream 11e of centrifugal compressor 10 becomes from inlet port 11a to row Outlet 11b delays semi-steep stream from axis X direction.Therefore, cylinder 12 is guided to apply impulsive force and the axis X side of radial direction air To impulsive force.The impulsive force in axis X direction is to make air guide the impulsive force that cylinder 12 disperses to the direction away from scroll portion 13, Therefore the possibility being guided by the air being constituted by casting the metal parts that manufactures cylinder 12 to have a breakage and coming off from installation site.

All or part of of cylinder 12 is guided to come off from installation site at air, and in the case that muffler 15 disperses, Collide with the demarcation strip 14 of the inside being configured at muffler 15.Therefore, by by rolling the separation that the metal parts being formed is constituted Plate 14 bigger is plastically deformed ductility due to have till destroying, is therefore become by plasticity when producing impact weight Shape thus the kinetic energy that absorbs impact.The all or part of of cylinder 12 is guided to disperse thereby, it is possible to prevent air.That is, by event Meaning makes demarcation strip 14 deform breakage absorbing impact, thus suppresses air to guide cylinder 12 to disperse to the outside of booster 100, to it He impacts and produces the such unfavorable condition in gap (opening) in position.

The thickness of slab of the demarcation strip 14 of present embodiment is at more than 4mm and in the scope of below 9mm.In addition, be more preferably 5mm Above and in the scope of below 7mm, thickness of slab is particularly preferably made to be 6mm.If the rigidity of demarcation strip 14 is too low, even if then due to breakage And the air that disperses guides all or part of impact weight of cylinder 12 to make demarcation strip 14 significantly deform also cannot to fully absorb Impact weight, all or part of of air guiding cylinder 12 disperses to the outside of booster 100.

On the other hand, if the rigidity of demarcation strip 14 is too high, then demarcation strip 14 guides the whole of cylinder 12 for the air dispersing Or the deformation of a part of impact weight tails off.Like this, demarcation strip 14 can not absorb impact weight, and impact weight is to other Position is propagated and is produced gap (opening).

Invention people change the thickness of slab of demarcation strip 14 while testing, and discovery air guides cylinder 12 not fly to outside Dissipate and the thickness of slab in other generation gaps, position (opening) is not more than 4mm and the scope for below 9mm, therefore become this scope Thickness of slab.

Muffler 15 shown in Fig. 1 is the device making the sound level producing in centrifugal compressor 10 decline.Such as Fig. 1 institute Showing, muffler 15 possesses silencer casing 15a.Silencer casing 15a delimit the direction shown in arrow from Fig. 1 (with axis X Orthogonal direction) leaked-in air guides to air the stream 15b of inlet port 11a guiding cylinder 12.Around stream 15b with The mode surrounding stream 15b is configured with noise reduction material 15e.By this noise reduction material 15e, thus absorb and produce in centrifugal compressor 10 The part of noise, make sound level decline.

As it is shown in figure 1, demarcation strip 14 is housed in inside by silencer casing 15a.The end of demarcation strip 14 is linked to noise reduction Device shell 15a.Therefore, demarcation strip 14 is also as the supporting parts function of supporting silencer casing 15a.

Then, the structure of the fastening restraint location with volute case 13b for the silencer casing 15a is illustrated.

As it was previously stated, if all or part of of air guiding cylinder 12 comes off from installation site and disperse, then air guides All or part of of cylinder 12 collides with demarcation strip 14.In above-mentioned, illustrate following situation: when producing impact weight, by The demarcation strip 14 that rolled steel is constituted is absorbed by being plastically deformed and prevents the kinetic energy of impact.Afterwards, will be to passing through divide The structure of the kinetic energy absorbing impact beyond plate 14 illustrates.

As shown in Figure 4, be arranged at muffler 15 side of volute case 13b end flange part 13d be arranged at noise reduction The flange part 15c of the end of the volute case 13b side of device shell 15a leads at the restraint location (the first restraint location) shown in Fig. 4 Cross fastening bolt 40 (the first fastening bolt) to be fastened.

Fig. 4 only illustrates restraint location at, but restraint location is provided with many in the circumference around axis X at certain intervals Place.On the restraint location of this many places, flange part 13d is fastened by fastening bolt 40 with flange part 15c.

As fastening bolt 40, the chrome-molybdenum steel of the carbon amounts 0.33～0.38% of referred to as SCM435 is preferably used.SCM435's Advantage is that intensity is high, and when being applied in stretching loading, the elongation till explosion is bigger.

Flange part 15c is provided with the fastener hole 15d extending along axis X.In addition, be provided with along axis X at flange part 13d The fastener hole 13e extending.Inner peripheral surface at these fastener holes 15d, 13e is formed with internal thread.On the other hand, prolonging along axis X The outer peripheral face of the axle portion 40b of the fastening bolt 40 stretched is formed with external screw thread, and this external screw thread is formed at from head 40a and axle portion 40b Boundary member near until axle portion 40b top ends near whole surface.

Uniform, even if thus producing stretching lotus in fastening bolt 40 by the deformation everywhere that makes the outer peripheral face of axle portion 40b Weight, in the case of being plastically deformed until elongation quantitative change greatly stops, owing to stress is difficult to focus on local, therefore until significantly extending Till, bolt 40 will not burst, therefore preferably.

Flange part 13d and flange part 15c is with by cylindric tubular distance piece 50 (first spacer portion with specific length Part) state of axle portion 40b that is inserted into fastening bolt 40 fastened, and this tubular distance piece 50 has the head than fastening bolt 40 The little internal diameter d1 of the diameter d2 of 40a.In this condition, be formed at fastening bolt 40 axle portion 40b external screw thread be formed at tight Gu the internal thread of the inner peripheral surface of hole 15d, 13e becomes the state of engagement.

Tubular distance piece 50 is made up of the metal parts being manufactured by rolling.As this metal parts, for example, use with iron The rolled steel of the Fe-C system alloy for principal component and containing trace (about 0.2%) carbon.As long as rolled steel, then can use Various materials, but rolled steel for general structure (the JIS G3101 of referred to as SS400 is preferably used；ASTM A283).

The metal material that rolling is formed has after bigger being plastically deformed until the ductility destroyed, therefore, has ratio Cast the characteristic of the high breakdown strength to impact of the metal material being formed.

As shown in Figure 4, air guides cylinder 12 to be arranged at, by inserting, the flange part that air guides cylinder 12 with volute case 13b The fastening bolt 42 of the through hole of 12a is fastened.Fig. 4 only illustrates restraint location at, but restraint location is at the Zhou Fang around axis X It is upwards provided with many places at certain intervals.On the restraint location of this many places, air guides cylinder 12 and volute case 13b by tightly Fixing bolt 42 is fastened.

Absorb and prevent the kinetic energy of impact above-mentioned middle record by being plastically deformed of demarcation strip 14, but record at this The structure of the kinetic energy of impact can be absorbed by the fastening bolt 40 beyond divide plate 14 and tubular distance piece 50.

If as previously mentioned air guide cylinder 12 all or part of come off from installation site and disperse, then air guide cylinder All or part of of 12 collides with demarcation strip 14.Owing to this collision causes applying silencer casing 15a from volute case 13b The impact in the direction separating.This impact acts on the restraint location of fastening bolt 40 and flange part 15c and flange part 13d.

As shown in Figure 4, fastening with the state that tubular distance piece 50 inserts the axle portion 40b of fastening bolt 40 is to make fastening The length in the axis X direction of bolt 40 guarantees that elongation is bigger.The length of the regulation of tubular distance piece 50 is at least than fastening The diameter of the axle portion 40b of bolt 40 is long, is set to the length not hindering terminal operation.By making elongation quantitative change big such that it is able to Prevent fastening bolt 40 from bursting, and by fastening bolt 40 elongation thus absorb air guide cylinder 12 all or part of Come off from installation site and disperse and collide the kinetic energy of the impact producing with fastening bolt 40.

It is because in addition, arrange tubular distance piece 50 as shown in Figure 4, make the interval being made up of the malleable rolled steel of tool Sleeve pipe 50 absorbs the kinetic energy of impact.By the restraint location impulses in fastening bolt 40 and flange part 15c, make to be configured at tightly The Length Contraction in the axis X direction of the tubular distance piece 50 between the head 40a of fixing bolt 40 and flange part 15c.By rolled steel The tubular distance piece 50 constituting has after being significantly plastically deformed until the ductility destroyed, therefore by along the contraction of axis X direction, Kinetic energy produced by above-mentioned impact can be absorbed.

Then, the structure of the fastening restraint location with bearing block 20 for the volute case 13b is illustrated.

As it is shown in figure 1, the bearing block 20 of present embodiment possesses flange part 20a and the support of rotor shaft of supporting scroll portion 13 The bearing portion 20b of 30.

As it is shown in figure 5, be arranged at the flange part 13f of the end of bearing block 20 side of volute case 13b and be arranged at bearing The flange part 20a of end of the volute case 13b side of seat 20 on the restraint location (the second restraint location) shown in Fig. 5 by tightly Fixing bolt 41 (the second fastening bolt) is fastened.

As fastening bolt 41, the chrome-molybdenum steel of the carbon amounts 0.33～0.38% of referred to as SCM435 is preferably used.SCM435's Advantage is that intensity is high, and elongation is bigger.

Flange part 13f is provided with the fastener hole 13g extending along axis X.In addition, be provided with along axis X at flange part 20a The fastener hole 20c extending.Inner peripheral surface at these fastener holes 13g, 20c is formed with internal thread.On the other hand, prolonging along axis X The outer peripheral face of the axle portion 41b of the fastening bolt 41 stretched is formed with external screw thread, and this external screw thread is formed at and from head 41a to top ends is Whole surface only.

Flange part 13f and flange part 20a is so that cylindric tubular distance piece 51 (the second distance member) is inserted into fastening The state of the axle portion 41b of bolt 41 is fastened, and this tubular distance piece 51 has less than the diameter d4 of the head 41a of fastening bolt 41 Internal diameter d3.In this condition, be formed at fastening bolt 41 axle portion 41b external screw thread be formed at fastener hole 13g, 20c The internal thread of inner peripheral surface becomes the state of engagement.

Tubular distance piece 51 is made up of the metal parts being manufactured by rolling.As this metal parts, for example, use with iron The rolled steel of the Fe-C system alloy for principal component and containing trace (about 0.2%) carbon.As long as rolled steel, then can use Various materials, but rolled steel for general structure (the JIS G3101 of referred to as SS400 is preferably used；ASTM A283).

The metal material that rolling is formed has after bigger being plastically deformed until the ductility destroyed, therefore, has ratio Cast the characteristic of the high breakdown strength to impact of the metal material being formed.

As described above, all or part of of air guiding cylinder 12 comes off from installation site and disperse, air guides cylinder 12 All or part of collide with demarcation strip 14.Apply the side making volute case 13b separate from bearing block 20 due to this collision To impact.This impact acts on the restraint location of fastening bolt 41 and flange part 13f and flange part 20a.

As it is shown in figure 5, the state fastening of the axle portion 41b so that tubular distance piece 51 to insert fastening bolt 41 is to make fastening The length in the axis X direction of bolt 41 guarantees that elongation is bigger.By making elongation quantitative change big such that it is able to prevent fastening Bolt 41 bursts, and by fastening bolt 41 elongation thus absorb air guide cylinder 12 all or part of from installation position Put and come off and disperse and collide the kinetic energy of the impact producing with fastening bolt 41.

In addition, arranging tubular distance piece 51 as shown in Figure 5 is to make the interval being made up of the malleable rolled steel of tool Sleeve pipe 51 absorbs the kinetic energy of impact.By acting on the impact of fastening bolt 41 and the restraint location of flange part 13f, thus configure The length in the axis X direction of the tubular distance piece 51 between the head 41a and flange part 13f of fastening bolt 41 shrinks.By The tubular distance piece 51 that rolled steel is constituted has until destroying ductility after bigger being plastically deformed, and therefore passes through along axis X-direction is shunk such that it is able to absorb kinetic energy produced by above-mentioned impact.

Then, illustrate to being installed on the clamping part 60 with the periphery edge of bearing block 20 for the volute case 13b.Vortex Near the restraint location of the flange part 20a of the flange part 13f of shell 13b and bearing block 20 as shown in Figure 6.Fig. 6 is from shown in Fig. 1 P direction observe the figure of periphery edge of flange part 13f and flange part 20a of volute case 13b.

As shown in Figure 6, in the circumference around axis X, at the multiple restraint locations being fastened by fastening bolt 41, (second is tight Maintenance is put) between multiple clamping part 60 is installed.

As it is shown in fig. 7, clamping part 60 has recess 60a, this recess 60a surrounds the periphery of flange part 20a from outer circumferential side The periphery edge of the flange part 13f of edge and volute case 13b.In addition, clamping part 60 has through hole 60b, this through hole 60b exists Recess 60a opening and along axis X direction extend.

As it is shown in fig. 7, flange part 20a has the fastener hole 20d extending along axis X direction.Fig. 7 only illustrates and fastens at one Hole 20d, but it has been disposed at equal intervals many places along the circumference around axis X.Inner peripheral surface at fastener hole 20d is formed with internal thread.Separately On the one hand, the outer peripheral face in the axle portion of the fastening bolt 43 (the 3rd fastening bolt) inserting through hole 60b and fastener hole 20d is formed External screw thread.Flange part 20a is engaged by tightly with the internal thread of fastener hole 20d by the external screw thread of fastening bolt 43 with clamping part 60 Gu.

In the state of clamping part 60 is anchored on flange part 20a, at the end face 13i in the axis X direction of volute case 13b And it is provided with the gap 60c of regulation between the end face 60e in the axis X direction of recess 60a.It along the width of the axis X of gap 60c is d5。

In addition, flange part 20a possesses: the contact surface 20e contacting with volute case 13b；Form what compressed air was circulated The end face 20f of stream 13h (second flow path)；And connect stage portion 20g of contact surface 20e and end face 20f.As it is shown in fig. 7, end face 20f is configured at stream 13h side relative to contact surface 20e.

The width d5 than gap 60c for the width d6 in the axis X direction of stage portion 20g is wide.

If air guides coming off from installation site of cylinder 12 as previously mentioned, then air guides cylinder 12 to collide with demarcation strip 14. The impact applying the direction making volute case 13b separate from bearing block 20 due to this collision.This impact acts on fastening bolt The restraint location of 41 and flange part 13f and flange part 20a.

The gap 60c arranging regulation as shown in Figure 7 is because, when all or part of of impeller 11 disperses and produces The impact in axis X direction has not been absorbed, the situation that fastening bolt 41 bursts and makes volute case 13b separate from bearing block 20 Under, by impact produced by the volute case 13b of clamping part 60 absorption and separation.

In addition, in the case of being not provided with the gap 60c of regulation, the fastening force of the vicinity of clamping part 60 improves and makes tight Fixing bolt 41 is difficult to burst.In this case, although be prevented from the explosion of fastening bolt 41, but to (for example, whirlpool, other positions Rotation shell 13b) apply load, there is the possibility of the position explosion being applied with load.

If fastening bolt 41 bursts and makes volute case 13b separate from bearing block 20, then become figure from the state shown in Fig. 7 State shown in 8.

If becoming the state shown in Fig. 8, the axis X side of the end face 13i and recess 60a in the axis X direction of volute case 13b To end face 60e become the state of contact.In a state, the width being partially formed with axis X direction at contact surface 20e is The gap 60d of d5.If this gap 60d connects with stream 13h and produces gap (opening), then there is the part that blade 11d is damaged Deng the possibility dispersed to outside from stream 13h.

In the present embodiment, as shown in Figure 8, the width than gap 60d for the width d6 in the axis X direction of stage portion 20g D5 width.It is therefore prevented that following unfavorable condition: gap 60d connects with stream 13h and produces the gap such as making the parts of breakage pass through (opening).

In the present embodiment, the axle by the end face 13i and recess 60a in the axis X direction of volute case 13b reluctantly Gap 60c is set between the end face 60e of line X-direction, thus the explosion beyond preventing the restraint location of fastening bolt 41.At this base On plinth, in the case that fastening bolt 41 bursts, absorbed by clamping part 60 separate from bearing block 20 because of volute case 13b and The impact producing.

Then, the manufacture method of the centrifugal compressor of present embodiment is illustrated.

In the manufacture method of the centrifugal compressor 10 of present embodiment, manufacture centrifugal compressor by following operation 10。

In the first operation, by compression from inlet port 11a leaked-in air the leaf that this air is discharged from outlet 11b Wheel 11 is installed to armature spindle 30.

In the second operation, air is installed in the way of housing impeller 11 and guides cylinder 12, formed the axle along armature spindle 30 Line X-direction guides from inlet port 11a leaked-in air to the direction tilting from axis X direction and guides the stream of outlet 11b.

In the 3rd operation, the scroll portion 13 that the compressed air discharged from outlet 11b is flowed into is configured to air and draws The outer circumferential side of the radial direction orthogonal with axis X direction of guide 12.

In the 4th operation, by thickness of slab be more than 4mm and the multiple demarcation strips 14 for below 9mm arrange inlet port 11a Air circulating direction upstream side and in the mode of the length on axis X direction with regulation centered on axis X Radially configure.

By above operation, manufacture the centrifugal compressor 10 of present embodiment.

The functions and effects that the centrifugal compressor 10 being possessed the booster 100 of present embodiment described above plays Illustrate.

The centrifugal compressor 10 that booster 100 according to present embodiment is possessed, at all or part of of impeller 11 In the case of bursting or come off, all or part of of impeller 11 disperses to radial direction, and guides cylinder 12 to collide with air.

Guide in cylinder 12 at air, formed by along the axis X direction of armature spindle 30 from inlet port 11a leaked-in air to from The direction that axis X direction tilts guides and guides the stream 11e of outlet 11b.As the whole of the impeller 11 dispersing to radial direction or When a part and air guide cylinder 12 to collide, cylinder 12 is guided to apply the impact of radial direction air.Same, when to axis X direction When all or part of of the impeller 11 dispersing guides with air cylinder 12 to collide, cylinder 12 is guided to apply axis X direction air Impact.The impact in axis X direction be make air guide cylinder 12 all or part of disperse to the direction away from scroll portion 13 Impact, therefore has air to guide all or part of possibility coming off from installation site of cylinder 12.

Centrifugal compressor 10 according to present embodiment, at the upstream side of circulating direction of the air of inlet port 11a, at axle Multiple demarcation strips 14 of the length in line X-direction with regulation radially configure centered on axis X.Therefore, disperse Impeller 11 all or part of, the produced impact of dispersing of impeller 11 sky that causes dispersing to the direction away from scroll portion 13 All or part of of gas guiding cylinder 12 collides with multiple demarcation strips 14.

Multiple demarcation strips 14 be thickness of slab be more than 4mm and for the rolled steel of below 9mm.Owing to air guides the complete of cylinder 12 Portion or a part are collided and are suitably plastically deformed, thus absorb the energy that collision produces.Thereby, it is possible to suppress following bad feelings Condition: air guides all or part of of cylinder 12 to disperse thus in the generation gap, local of centrifugal compressor 10, impeller 11 complete Portion or a part are dispersed from this gap to outside.

Centrifugal compressor 10 according to present embodiment, when the air dispersing to the direction away from scroll portion 13 guides cylinder 12 All or part of with house demarcation strip 14 silencer casing 15a collision when, by silencer casing 15a from volute case Apply impact on the direction zoomed out.This impact is by being configured between the head 40a of fastening bolt 40 and silencer casing 15a Tubular distance piece 50 carries out shrinking and is absorbed.So, the spacer sleeve being fastened in the state of inserting fastening bolt 40 is utilized Pipe 50 absorbs the impact of axis direction, thus suppresses the unfavorable condition that fastening bolt 40 bursts.Thereby, it is possible to suppression is following not Good situation: air guides all or part of generation gap, local causing at centrifugal compressor 10 of dispersing of cylinder 12, impeller All or part of of 11 disperses from this gap to outside.

In the centrifugal compressor 10 of present embodiment, fastening bolt 40 possess be formed at axle portion 40b from head 40a to The external screw thread of the outer peripheral face of top ends.By doing that such that it is able to utilize fastening bolt 40, above-mentioned unfavorable condition is suppressed, This fastening bolt 40 uniformly thus is increased by making the deformation everywhere of the outer peripheral face of the axle portion 40b from head 40a to top ends The energy absorption of impact.

Centrifugal compressor 10 according to present embodiment, when the air dispersing to the direction away from scroll portion 13 guides cylinder 12 All or part of with house demarcation strip 14 silencer casing 15a collision when, apply by volute case 13b from bearing block 20 The impact in direction zoomed out of flange part 20a.This impact is by being configured at the head 41a and volute case 14b of fastening bolt 41 Between tubular distance piece 51 carry out shrinking and absorbed.So, utilization is fastened in the state of inserting fastening bolt 41 Tubular distance piece 51 absorbs the impact in axis X direction, thus suppresses the unfavorable condition that fastening bolt 41 bursts.Thereby, it is possible to press down Make following unfavorable condition: air guides all or part of the dispersing of cylinder 12 to cause between the local of centrifugal compressor 10 produces Gap, all or part of of impeller 11 disperses from this gap to outside.

In the centrifugal compressor 10 of present embodiment, fastening bolt 41 possess be formed at axle portion 40b from head 41a to The external screw thread of the outer peripheral face of top ends.By doing that such that it is able to utilize fastening bolt 41, above-mentioned unfavorable condition is suppressed, This fastening bolt 41 uniformly thus is increased by making the deformation everywhere of the outer peripheral face of the axle portion 40b from head 41a to top ends The energy absorption of impact.

The centrifugal compressor 10 of present embodiment possesses multiple clamping part 60, and this clamping part 60 has: from outer circumferential side Surround the recess 60a of the periphery edge of flange part 20a and the periphery edge of volute case 13b；And at recess 60a opening and along axle The through hole 60b that line X-direction extends.In addition, flange part 20a have in the circumference around axis X multiple along axis X direction extend Fastener hole 20d.Further, flange part 20a and clamping part 60 are by being inserted in the fastening bolt 43 of through hole 60b and fastener hole 20d Fastened.Further, the end face 60e in the axis X direction of the end face 13i and recess 60a in the axis X direction of volute case 13b it Between be provided with the gap 60c of regulation.

Even if by doing so it is possible, making the flange part 20a and volute case 13b of bearing block 20 in the explosion of multiple fastening bolts 41 In the case of separation, the end face 60e in the end face 13i in the axis X direction of the volute case 13b also axis X direction with recess 60a connects Touch.The produced impact of this contact is absorbed by the multiple clamping parts 60 being installed in the circumference of axis X.Thus, energy Enough suppress following unfavorable condition: air guides the generation gap, local causing at centrifugal compressor 10 of dispersing of cylinder 12, impeller 11 All or part of disperse from this gap to outside.

In the present embodiment, flange part 20a and clamping part 60 are fastened by fastening bolt 43, at volute case 13b Axis X direction end face 13i and recess 60a axis X direction end face 60e between be provided with the gap 60c of regulation.And And, flange part 20a has stage portion 20g of the end face 20f connecting contact surface 20e and flange part 20a, this contact surface 20e and whirlpool Rotation shell 13b contact, this end face 20f forms and makes the stream 13h that compressed air circulates and the stream 13h being configured at contact surface 20e Side.

By doing so it is possible, make the flange part 20a and volute case 13b of bearing block 20 divide in the explosion of multiple fastening bolts 41 From, in the case that the end face 60e in the axis X direction of the end face 13i and recess 60a in the axis X direction of volute case 13b contacts, By the existence of stage portion 20g thus suppress the opening between flange part 20a and volute case 13b.Further, stage portion 20g The width d6 in axis X direction is wider than the width d5 of the gap 60d of regulation, does not therefore produce the gap of connection, can be more reliably Suppression opening.

(other embodiments)

In the above description, it is linked with the armature spindle 30 of the impeller 11 that centrifugal compressor 10 is possessed by utilizing from ship The exhaust discharged by diesel engine and the turbine (omit diagram) that rotates and rotate around axis X but it also may be other modes.Example As, armature spindle 30 also can be other power sources such as the motor by being linked to armature spindle 30 and the structure that rotates.

In the above description, demarcation strip 14 is centered on axis X and radially with the interval configuration four of 90 degree, It may also be other modes.For example, it is also possible to be centered on axis X and radially with the interval configuration six of 60 degree Mode, by 45 degree interval configuration eight in the way of etc., configure arbitrary piece number.

In the above description, clamping part 60 is made to be anchored on the flange part 20a of bearing block 20 but it also may to be its other party Formula.For example, it is also possible to clamping part 60 is fastened to the flange part 13e of volute case 13b.In this case, volute case 13b Flange part 13e have in the circumference around axis X multiple along axis X direction extend fastener hole.Further, by the plurality of Fastener hole fastens fastening bolt 43, thus clamping part 60 is anchored on the flange part 13e of volute case 13b.In addition, in this feelings Under condition, above-mentioned gap 60c is arranged at the end face in the axis X direction of the flange part 20a of bearing block 20 and the recessed of clamping part 60 Between the end face in the axis X direction in portion.

Claims (according to the modification of treaty the 19th article)

1. a centrifugal compressor, it is characterised in that possess:

Impeller, this impeller is installed on armature spindle, and this fluid from the fluid of inlet port inflow and is discharged by compression from outlet；

Guiding cylinder, this guiding cylinder houses this impeller；

Scroll portion, this scroll portion is configured at the outer circumferential side of this guiding cylinder, and the flow of compressed fluid for discharging from described outlet enters；

Multiple demarcation strips, this demarcation strip is arranged on the upstream side of the circulating direction of fluid relative to described inlet port, and described There is on the axis direction of armature spindle the length of regulation；And

Muffler, this muffler has the silencer casing housing the plurality of demarcation strip,

The plurality of demarcation strip radially configures centered on described axis, and this demarcation strip be thickness of slab be more than 4mm and The rolled steel of below 9mm.

2. centrifugal compressor according to claim 1, it is characterised in that

Described scroll portion has volute case, and this volute case forms the whirlpool being flowed into from the compression fluid that described outlet is discharged Shape room,

This volute case and described silencer casing at multiple first restraint locations of the circumference around described axis by along described Multiple first fastening bolts that axis direction extends are fastened,

Described volute case and described silencer casing are that the first cylindric distance member is being inserted into the described first fastening Fastened in the state of the axle portion of bolt, straight than the head of described first fastening bolt of the internal diameter of described first distance member Footpath is little.

3. centrifugal compressor according to claim 2, it is characterised in that

Described first fastening bolt possess be formed at described axle portion from described head to the external screw thread of the outer peripheral face of top ends.

4. the centrifugal compressor according to Claims 2 or 3, it is characterised in that

Possessing bearing block, this bearing block has the flange part of the bearing portion supporting described armature spindle and the described scroll portion of supporting,

This flange part with described volute case at multiple second restraint locations around described axis by prolonging along described axis direction Multiple second fastening bolts stretched are fastened,

Described flange part and described volute case are that the second cylindric distance member is being inserted into described second fastening bolt Axle portion in the state of fastened, the diameter of the head than described second fastening bolt for the internal diameter of described second distance member Little.

5. centrifugal compressor according to claim 4, it is characterised in that

Described second fastening bolt possess be formed at described axle portion from described head to the external screw thread of the outer peripheral face of top ends.

6. a centrifugal compressor, it is characterised in that possess:

Impeller, this impeller is installed on armature spindle, and this fluid from the fluid of inlet port inflow and is discharged by compression from outlet；

Guiding cylinder, this guiding cylinder houses this impeller；

Scroll portion, this scroll portion is configured at the outer circumferential side of this guiding cylinder, and has volute case, and this volute case is formed from described The volute room that the compression fluid that outlet is discharged is flowed into；

Bearing block, this bearing block has and supports the bearing portion of described armature spindle and the flange part supporting described scroll portion；

Along described axis direction extend multiple flange part fastening bolts, the plurality of flange part fastening bolt by described flange part with Described volute case is at multiple restraint locations of the axis around described armature spindle；And

Multiple clamping parts, this clamping part has from the periphery edge of the described flange part of outer circumferential side encirclement and described volute case Periphery edge recess and to this recess opening and along described axis direction extend through hole,

Any one party in described flange part or described volute case has multiple along described axle in the circumference around described axis The fastener hole that line direction extends,

Any one party in described flange part or described volute case and described clamping part are by being inserted in described through hole and institute The clamping part fastening bolt stating fastener hole is fastened,

The end face of the described axis direction of any the opposing party in described flange part or described volute case and described recess It is provided with the gap of regulation between the end face of described axis direction.

7. centrifugal compressor according to claim 6, it is characterised in that

Described flange part has described fastener hole, and is fastened by described clamping part fastening bolt with described clamping part,

Arrange between the end face of the end face of described axis direction of described volute case and the described axis direction of described recess There is the gap of regulation,

Described flange part has the stage portion connecting contact surface and the end face of described flange part, this contact surface and described volute case Contact, this end face forms the second flow path that described compression fluid is circulated, and is configured at described second relative to described contact surface Stream side.

8. centrifugal compressor according to claim 7, it is characterised in that

The width width in the gap of regulation described in the width ratio of the described axis direction of described stage portion.

9. a booster, it is characterised in that possess:

Centrifugal compressor according to any one of claim 1-8；And

Turbine, this turbine is rotated around described axis by the exhaust discharged from internal combustion engine, and this turbine is linked to described rotor Axle.

10. the manufacture method of a centrifugal compressor, it is characterised in that possess following operation:

Impeller is installed to the operation of armature spindle, and this fluid is simultaneously arranged by the fluid that this wheel compresses flows into from inlet port from outlet Go out；

In the way of housing described impeller, guiding cylinder is installed and is formed and discharge described in the direct fluid that will flow into from described inlet port The operation of the stream of mouth；

That the compression scroll portion that flowed into of fluid discharged from described outlet is configured to described guiding cylinder with described axis side Operation to the outer circumferential side of orthogonal radial direction；And

It is more than 4mm by thickness of slab and multiple demarcation strips of below 9mm are arranged at the circulating direction of fluid relative to described inlet port Upstream side and by the plurality of demarcation strip in the way of there is the length of regulation at described axis direction with described axis be The operation that the heart radially configures.

11. 1 kinds of mufflers, it is installed on centrifugal compressor, and this centrifugal compressor possesses: impeller, and this impeller is installed on rotor Axle, and compress from the fluid of inlet port inflow and this fluid is discharged from outlet；Guiding cylinder, this guiding cylinder houses this impeller； And scroll portion, this scroll portion is configured at the outer circumferential side of this guiding cylinder, and the flow of compressed fluid for discharging from described outlet enters, should Muffler is characterised by,

Possessing: multiple demarcation strips, this demarcation strip is arranged at the upstream side of the circulating direction of fluid relative to described inlet port, and There is on the axis direction of described armature spindle the length of regulation；And

Silencer casing, this silencer casing houses the plurality of demarcation strip,

The plurality of demarcation strip radially configures centered on described axis, and this demarcation strip be thickness of slab be more than 4mm and The rolled steel of below 9mm.

Claims (10)

1. a centrifugal compressor, it is characterised in that possess:

Impeller, this impeller is installed on armature spindle, and this fluid from the fluid of inlet port inflow and is discharged by compression from outlet；

Guiding cylinder, this guiding cylinder houses this impeller；

Scroll portion, this scroll portion is configured at the outer circumferential side of this guiding cylinder, and the flow of compressed fluid for discharging from described outlet enters；

Multiple demarcation strips, this demarcation strip is arranged on the upstream side of the circulating direction of fluid relative to described inlet port, and described There is on the axis direction of armature spindle the length of regulation；And

Muffler, this muffler has the silencer casing housing the plurality of demarcation strip,

The plurality of demarcation strip radially configures centered on described axis, and this demarcation strip be thickness of slab be more than 4mm and The rolled steel of below 9mm.

2. centrifugal compressor according to claim 1, it is characterised in that

Described scroll portion has volute case, and this volute case forms the whirlpool being flowed into from the compression fluid that described outlet is discharged Shape room,

This volute case and described silencer casing at multiple first restraint locations of the circumference around described axis by along described Multiple first fastening bolts that axis direction extends are fastened,

Described volute case and described silencer casing are that the first cylindric distance member is being inserted into the described first fastening Fastened in the state of the axle portion of bolt, straight than the head of described first fastening bolt of the internal diameter of described first distance member Footpath is little.

3. centrifugal compressor according to claim 2, it is characterised in that

Described first fastening bolt possess be formed at described axle portion from described head to the external screw thread of the outer peripheral face of top ends.

4. the centrifugal compressor according to Claims 2 or 3, it is characterised in that

Possessing bearing block, this bearing block has the flange part of the bearing portion supporting described armature spindle and the described scroll portion of supporting,

This flange part with described volute case at multiple second restraint locations around described axis by prolonging along described axis direction Multiple second fastening bolts stretched are fastened,

Described flange part and described volute case are that the second cylindric distance member is being inserted into described second fastening bolt Axle portion in the state of fastened, the diameter of the head than described second fastening bolt for the internal diameter of described second distance member Little.

5. centrifugal compressor according to claim 4, it is characterised in that

Described second fastening bolt possess be formed at described axle portion from described head to the external screw thread of the outer peripheral face of top ends.

6. a centrifugal compressor, it is characterised in that possess:

Impeller, this impeller is installed on armature spindle, and this fluid from the fluid of inlet port inflow and is discharged by compression from outlet；

Guiding cylinder, this guiding cylinder houses this impeller；

Scroll portion, this scroll portion is configured at the outer circumferential side of this guiding cylinder, and has volute case, and this volute case is formed from described The volute room that the compression fluid that outlet is discharged is flowed into；

Bearing block, this bearing block has and supports the bearing portion of described armature spindle and the flange part supporting described scroll portion；

Along described axis direction extend multiple flange part fastening bolts, the plurality of flange part fastening bolt by described flange part with Described volute case is at multiple restraint locations of the axis around described armature spindle；And

Multiple clamping parts, this clamping part has from the periphery edge of the described flange part of outer circumferential side encirclement and described volute case Periphery edge recess and to this recess opening and along described axis direction extend through hole,

Any one party in described flange part or described volute case has multiple along described axle in the circumference around described axis The fastener hole that line direction extends,

Any one party in described flange part or described volute case and described clamping part are by being inserted in described through hole and institute The clamping part fastening bolt stating fastener hole is fastened,

The end face of the described axis direction of any the opposing party in described flange part or described volute case and described recess It is provided with the gap of regulation between the end face of described axis direction.

7. centrifugal compressor according to claim 6, it is characterised in that

Described flange part has described fastener hole, and is fastened by described clamping part fastening bolt with described clamping part,

Arrange between the end face of the end face of described axis direction of described volute case and the described axis direction of described recess There is the gap of regulation,

Described flange part has the stage portion connecting contact surface and the end face of described flange part, this contact surface and described volute case Contact, this end face forms the second flow path that described compression fluid is circulated, and is configured at described second relative to described contact surface Stream side.

8. centrifugal compressor according to claim 7, it is characterised in that

The width width in the gap of regulation described in the width ratio of the described axis direction of described stage portion.

9. a booster, it is characterised in that possess:

Centrifugal compressor according to any one of claim 1-8；And

Turbine, this turbine is rotated around described axis by the exhaust discharged from internal combustion engine, and this turbine is linked to described rotor Axle.

10. the manufacture method of a centrifugal compressor, it is characterised in that possess following operation:

Impeller is installed to the operation of armature spindle, and this fluid is simultaneously arranged by the fluid that this wheel compresses flows into from inlet port from outlet Go out；

In the way of housing described impeller, guiding cylinder is installed and is formed and discharge described in the direct fluid that will flow into from described inlet port The operation of the stream of mouth；

That the compression scroll portion that flowed into of fluid discharged from described outlet is configured to described guiding cylinder with described axis side Operation to the outer circumferential side of orthogonal radial direction；And

It is more than 4mm by thickness of slab and multiple demarcation strips of below 9mm are arranged at the circulating direction of fluid relative to described inlet port Upstream side and by the plurality of demarcation strip in the way of there is the length of regulation at described axis direction with described axis be The operation that the heart radially configures.