CN106574635A - Centrifugal rotary machine - Google Patents
Centrifugal rotary machine Download PDFInfo
- Publication number
- CN106574635A CN106574635A CN201580042896.2A CN201580042896A CN106574635A CN 106574635 A CN106574635 A CN 106574635A CN 201580042896 A CN201580042896 A CN 201580042896A CN 106574635 A CN106574635 A CN 106574635A
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- CN
- China
- Prior art keywords
- dividing plate
- rotary machine
- rotary shaft
- centrifugal
- confining part
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D25/00—Component parts, details, or accessories, not provided for in, or of interest apart from, other groups
- F01D25/24—Casings; Casing parts, e.g. diaphragms, casing fastenings
- F01D25/246—Fastening of diaphragms or stator-rings
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D17/00—Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal pumps
- F04D17/08—Centrifugal pumps
- F04D17/10—Centrifugal pumps for compressing or evacuating
- F04D17/12—Multi-stage pumps
- F04D17/122—Multi-stage pumps the individual rotor discs being, one for each stage, on a common shaft and axially spaced, e.g. conventional centrifugal multi- stage compressors
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D25/00—Component parts, details, or accessories, not provided for in, or of interest apart from, other groups
- F01D25/16—Arrangement of bearings; Supporting or mounting bearings in casings
- F01D25/162—Bearing supports
- F01D25/164—Flexible supports; Vibration damping means associated with the bearing
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/08—Sealings
- F04D29/083—Sealings especially adapted for elastic fluid pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/08—Sealings
- F04D29/16—Sealings between pressure and suction sides
- F04D29/161—Sealings between pressure and suction sides especially adapted for elastic fluid pumps
- F04D29/162—Sealings between pressure and suction sides especially adapted for elastic fluid pumps of a centrifugal flow wheel
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/40—Casings; Connections of working fluid
- F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
- F04D29/4206—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for elastic fluid pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D25/00—Component parts, details, or accessories, not provided for in, or of interest apart from, other groups
- F01D25/24—Casings; Casing parts, e.g. diaphragms, casing fastenings
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D17/00—Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal pumps
- F04D17/08—Centrifugal pumps
- F04D17/10—Centrifugal pumps for compressing or evacuating
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- F05D2300/00—Materials; Properties thereof
- F05D2300/40—Organic materials
- F05D2300/43—Synthetic polymers, e.g. plastics; Rubber
- F05D2300/432—PTFE [PolyTetraFluorEthylene]
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
Provided is a centrifugal rotary machine that comprises: a rotor (2) that has a rotary shaft (4) that rotates around an axis (P), and impellers (3) that rotate together with the rotary shaft (4); a casing (7) that surrounds the rotor (2) from an outer peripheral side; diaphragms (6) that are provided such that a plurality thereof are stacked in a direction of the axis (P) between the rotor (2) and the casing (7), and that define a flow channel for a fluid (G) that is pressure fed by the impellers (3); and restraining members (20) that restrain the diaphragms (6) from an outer peripheral side.
Description
Technical field
The present invention relates to have the centrifugal rotary machine of multiple impellers.
The application CLAIM OF PRIORITY based on Japanese Patent Application 2014-164735 filed in August in 2014 13 days, by it
Appearance is incorporated in this.
Background technology
The dividing plate of the centrifugal rotary machines such as centrifugal compressor generally in rotary bodies such as rotary shaft-impellers and around it etc.
There is gap between meront.Therefore, most cases are that gap between rotary body and meront is provided with suppression workflow
The sealing device that body is flowed into.In the case of for centrifugal compressor, sealing device be arranged at the entrance of impeller metal cap,
At different levels of multi-stage impeller and the dummy piston portion of final level setting in multi-stage impeller etc..Also, such sealing device
For example using damping seal, labyrinth sealing etc..
In sealing device, in order to suppress leakage rate, therefore the gap between containment member and rotary body such as fin is sealed
It is set to small size (such as 0.1mm～number mm).When centrifugal compressor operates, in the dividing plate of centrifugal compressor
Deform because of heat, stress and centrifugal force Deng positions such as inner part, impellers.Thus, rotary body and meront are because of sealing
The size in the gap of device different and come in contact, the reason for become the unstable vibration of rotary shaft.
In recent years, for example in the centrifugal compressor towards gas field, spraying the high-pressure trend of pressure gradually becomes notable.Example
Such as require to spray high pressure compressor of the pressure for more than 20MPa.Therefore, the deformation of meront-rotary body is in the big trend of change.
In addition, with the high-pressure trend of centrifugal compressor, such as the pressure distribution produced around the inner parts such as dividing plate
The absolute value of pressure reduction also becomes big.It is thereby possible to be subjected to displacement inner part.If consider such deformation, displacement and increase close
The gap of seal apparatus can then cause the reduction of the performance of centrifugal compressor to prevent contact, therefore the gap of sealing device
Setting becomes difficult.
Patent document 1 describe the ring of the deformation for possessing opposing sealing device in order to suppress the deformation of sealing device from
Core type compressor.
Citation
Patent document
Patent document 1：Japanese Unexamined Patent Publication 2011-32908 publications
The content of the invention
Invent problem to be solved
However, in the construction that patent document 1 is recorded, it is impossible to suppress deformation, the displacement of dividing plate.Thus, produce sometimes close
Situations such as gap of seal apparatus becomes uneven because of the deformation of dividing plate, displacement, so as to produce the unstable vibration of rotary shaft.
It is an object of the present invention to provide can suppress the deformation of dividing plate, displacement and prevent the rotation of centrifugal rotary machine
The centrifugal rotary machine of the unstable vibration of rotating shaft.
For solving the scheme of problem
First scheme of the invention, centrifugal rotary machine is characterised by that the centrifugal rotary machine possesses：
Rotor, it has the rotary shaft for rotating about the axis and the impeller rotated together with the rotary shaft；Housing, it is from outer circumferential side bag
Enclose the rotor；Dividing plate, it is set between the rotor and the housing along axis direction to be laminated with multiple, and marks off
By the stream of the fluid of the impeller pressurized delivered；And confining part, it constrains the dividing plate from outer circumferential side.
According to such structure, confining part plays the function of the deformation, the displacement that suppress dividing plate, thus, it is possible to suppress with every
The change of the relative position of the associated meront of the deformation of plate, displacement and rotary body, prevents meront from contacting with rotary body.
In above-mentioned centrifugal rotary machine, it is also possible to be set to following structure：The confining part be embedded in it is described every
The ring of the ring-type of the outer peripheral face of plate, the outer peripheral face of the ring is formed as being abutted with the inner peripheral surface of the housing.
According to such structure, the gap between dividing plate and housing can be remained constant.In other words, can suppress every
Plate diametrically carries out displacement.In addition, it is also possible to suppress the deformation of dividing plate.Thus, by sealing device in the case of dividing plate,
It is prevented from being come in contact in the gap of sealing device.
In above-mentioned centrifugal rotary machine, it is also possible to be set to following structure：The confining part is formed by resin.
According to such structure, it is possible to increase the sliding between housing and confining part.
In above-mentioned centrifugal rotary machine, it is also possible to be set to following structure：Formed in the outer peripheral face of the confining part
There is the groove for circumferentially, equally spaced being formed.
According to such structure, it is possible to increase the sliding between housing and confining part.
In above-mentioned centrifugal rotary machine, the confining part can also be continuously formed with the adjacent dividing plate
Keyway and the key component chimeric with the keyway.
According to such structure, the combination of axially connected dividing plate can be made using key component becomes firm.Thus, energy
Enough suppress dividing plate to be subjected to displacement, in the case where sealing device is arranged at into dividing plate, be prevented from being sent out in the gap of sealing device
Raw contact.
In above-mentioned centrifugal rotary machine, it is also possible to be set to following structure：The impeller includes：First impeller sets, its
The first side for being configured on axis direction simultaneously makes the fluid circulate towards the middle position on the axis direction of the rotary shaft；
With the second impeller sets, its second side contrary with first side being configured on axis direction simultaneously makes the fluid towards described
Middle position circulation on the axis direction of rotary shaft, the centrifugal rotary machine has the two ends for being arranged at the rotary shaft
Portion and be the bearing that can rotate by the rotation e axle supporting, the confining part is arranged at the middle position of the dividing plate
Near.
According to such structure, can effectively suppress and the support of the rotary shaft i.e. centrally located position of bearing lie farthest away
Deformation, the displacement of the dividing plate near putting.
Invention effect
According to the present invention, confining part plays the function of the deformation, the displacement that suppress dividing plate, can suppress the displacement with dividing plate
Deformation, change of the associated meront with the relative position of rotary body, prevents meront from contacting with rotary body.
Description of the drawings
Fig. 1 is the diagrammatic cross-sectional view of the centrifugal compressor of the first embodiment of the present invention.
Fig. 2 is the partial enlarged drawing of the centrifugal compressor of the first embodiment of the present invention.
Fig. 3 is the figure observed from axis direction of the deformation confinement ring of the variation of the first embodiment of the present invention.
Fig. 4 is the figure observed from axis direction of the distance piece of the variation of the first embodiment of the present invention.
Fig. 5 is the partial enlarged drawing of the centrifugal compressor of second embodiment of the present invention.
Specific embodiment
(first embodiment)
Hereinafter, it is that centrifugal compressor is illustrated to the centrifugal rotary machine of the first embodiment of the present invention.
As shown in figure 1, the centrifugal compressor 1 of present embodiment is the single-shaft multi-stage formula for possessing multiple impellers 3 (impeller)
Centrifugal compressor.
Centrifugal compressor 1 has：Rotor 2, it is rotated centered on axis P；The housing 7 of drum, its
Rotor 2 is surrounded from outer circumferential side；And multiple dividing plates 6, it is set to be laminated with along axis direction between rotor 2 and housing 7
It is multiple, and formed by the stream of the process gas G (fluid) of the pressurized delivered of impeller 3.
Rotor 2 has rotary shaft 4 and the multiple impellers 3 rotated together with rotary shaft 4.Impeller 3 is mounted to rotary shaft
4 and using centrifugal force come the impeller of compression process gas G.
In addition, rotary shaft 4 is linked with the driving machines such as motor (not shown), rotor 2 is driven to rotate by the driving machine.
Rotary shaft 4 is formed as column and extends along the direction of axis P.Two ends quilt of the rotary shaft 4 on the direction of axis P
The supporting of bearing 16 is to rotate.Suitably arrange between the rotary shaft 4 and multiple impellers 3 and dividing plate 6 that constitute rotary body
There is sealing device 5.
Multiple impellers 3 are disposed between the bearing 16 that the two ends on the direction of the axis P of rotary shaft 4 are arranged.Separately
Outward, multiple impellers 3 be formed in blade on the direction of the axis P of rotary shaft 4 toward each other towards two groups of opposition side of three-level
Formula impeller sets 3A, 3B.First impeller sets 3A, the second impeller sets 3B are making each other rear side towards the central authorities on the direction of axis P
The state of position C is installed on rotary shaft 4.
First impeller sets 3A are configured at the first side on axis direction (left side in Fig. 1).Second impeller sets 3B are configured at
Second side (right side in Fig. 1) contrary with the first side on axis direction.Each impeller sets 3A, 3B with along axis direction row
Each impeller 3 of row accordingly possesses the compressor stage of three-level.
Impeller 3 possesses respectively：Substantially discoid disk component 8, it is with towards on the direction of the axis P in rotary shaft 4
Middle position C and it is gradually expanding to the radial outside of axis P；Multiple blades 9, it is in the circumferentially spaced compartment of terrain of axis P
It is radially disposed at the disk component 8；And shield 10, it is opposed to arrange and cover multiple blades 9 with disk component 8.
Process gas G by each impeller sets in the first impeller sets 3A, the second impeller sets 3B towards the side of axis P
Middle position C upwards circulates and is compressed.
Bearing 16 is each provided with one at the both ends of rotary shaft 4, and rotary shaft 4 is supported to rotate.As bearing
16, can for example adopt the bearing of journals with multiple bearing shells.
Housing 7 is formed as cylindric, and its center axis are consistent with axis P.Housing 7 internally contains multiple dividing plates 6.It is many
Individual dividing plate 6 is arranged with being laminated multiple modes in the axial direction.
Multiple dividing plates 6 are arranged in correspondence with each compressor stage of centrifugal compressor 1.Specifically, multiple dividing plates 6 are wrapped
Include multiple dividing plate 6A corresponding with the first impeller sets 3A and multiple dividing plate 6B corresponding with the second impeller sets 3B.With the first impeller sets
The corresponding multiple dividing plate 6A of 3A connect via stage portion.Multiple dividing plate 6B corresponding with the second impeller sets 3B also connects via stage portion
Connect.It should be noted that although adjacent dividing plate 6A near the C of middle position contacts with dividing plate 6B, but not via stage portion company
Connect.
The gap S of regulation is formed between the housing 7 and multiple dividing plates 6 of drum.That is, the inner peripheral surface of housing 7 with
The outer peripheral face of multiple dividing plates 6 is separated across the gap S of regulation.Gap S is set to equally on axis direction and circumference.
The inside of the dividing plate 6 after stacking, in the position of the radial outside of the end of the first side on axis direction
It is formed with suction inlet 11A annular in shape.In addition, the impeller 3 positioned at side in suction inlet 11A and three-level formula impeller sets 3A
Stream between be formed with connection stream 12A and the stream of the impeller 3 is connected with suction inlet 11A.Thereby, it is possible to by process gas
Body G is imported externally to three-level formula impeller sets 3A.
Connection stream 14A, being located in the connection stream 14A and three-level formula impeller sets 3A have been internally formed in dividing plate 6
The stream connection of the impeller 3 of the second side simultaneously extends to the outside of radial direction.In the central authorities on axis direction of the inside of dividing plate 6
The position of the radial outside of position C is formed with the outlet 15A for being formed as ring-type, and outlet 15A connects with stream 14A is connected
Connect.
It is being provided with the position of three-level formula impeller sets 3B, is also being internally formed housing stream 13B, suction in dividing plate 6
Mouth 11B, connection stream 12B, 14B, outlet 15B.And they be configured in the middle position C on axis direction as boundary with
Housing stream 13A, suction inlet 11A, connection stream 12A, 14A, outlet 15A symmetrical in the axial direction position.
In addition, rotary shaft 4 outer peripheral face and between three-level formula impeller sets 3A and three-level formula impeller sets 3B, be provided with use
In the dummy piston 17 of the thrust of adjustment impeller 3.In the centrifugal compressor 1 of present embodiment, by rotary shaft 4, Duo Geye
Wheel 3 and dummy piston 17 constitute rotor 2.
Quilt after the process gas G near the middle position C of rotary shaft 4 is compressed and reached in three-level formula impeller sets 3A
Import three-level formula impeller sets 3B and be further compressed, and arrive again at middle position C nearby (with reference to the dotted line of Fig. 1).Therefore,
It is have pressure differential between three-level formula impeller sets 3A and three-level formula impeller sets 3B in the middle position C of rotary shaft 4.
The centrifugal compressor 1 of present embodiment is provided with three kinds of sealing devices 5.
First sealing device 5 is the first sealing dress that the outer peripheral face to dummy piston 17 is sealed with the gap of dividing plate 6
Put 5a.Second sealing device 5 is the second sealing dress that the outer peripheral face of the shield 10 to impeller 3 is sealed with the gap of dividing plate 6
Put 5b.Third sealing device 5 is that the outer peripheral face of rotary shaft 4 is sealed with the gap of dividing plate 6 in the interval of the disconnection of impeller 3
Third sealing device 5c.
Here, illustrating the sealing device 5 of present embodiment using first sealing device 5a.First sealing device 5a is arranged
For prevent process gas G because of the pressure differential between three-level formula impeller sets 3A and three-level formula impeller sets 3B in middle position C from three
Level formula impeller sets 3B circulate towards three-level formula impeller sets 3A along axis P.
Sealing device 5 has the seal body for being installed on dividing plate 6 and prolongs towards rotor 2 from seal body
The multiple sealing fins stretched.Multiple sealing fins are respectively facing the ground of rotor 2 and extend to inner circumferential side from seal body, and edge
Circumferentially extending.These sealing fins are diametrically formed with minim gap with rotor 2.
Sealing device 5 constitutes so-called labyrinth sealing by multiple sealing fins.It should be noted that sealing device
5 seal constructions for being used are not limited to labyrinth sealing, and can also be using damping seal (pass sealing, honeycomb seal).
The centrifugal compressor 1 of present embodiment possesses from outer circumferential side the deformation confinement ring 20 of the ring-type for constraining dividing plate 6.Change
Yan Zhi, deforms the confining part that confinement ring 20 is created as the thickness and cylindrical shape diametrically with regulation.Deformation is about
The internal diameter that beam ring 20 is formed as deforming confinement ring 20 is roughly the same with the diameter of dividing plate 6 or more slightly smaller than the diameter of dividing plate 6.That is,
Deformation confinement ring 20 is set to be embedded in internal diameter as the outer peripheral face of dividing plate 6.
As shown in Fig. 2 the outer peripheral face that deformation confinement ring 20 is formed as deforming confinement ring 20 is abutted with the inner peripheral surface of housing 7.
That is, the outer peripheral face of dividing plate 6 is fixed in the inner circumferential side for deforming confinement ring 20, deforms the outer circumferential side of confinement ring 20 and the inner circumferential of housing 7
Face contacts.
In addition, deformation confinement ring 20 is configured in the way of along confinement ring groove 21, the confinement ring groove 21 is in dividing plate 6
The groove that circumferentially formed of outer peripheral face.Confinement ring is corresponding with the width of deformation confinement ring 20 with the well width of groove 21.
Deformation confinement ring 20 is for example by sliding as polytetrafluoroethylene (PTFE) (polytetrafluoroethylene, PTFE)
The high resin of dynamic property is formed.This is not limited to as the material for forming deformation confinement ring 20, as long as sliding height and ratio of rigidity
Form the low material of the material of housing 7.For example, it is also possible to using polyacetal resin etc..
The deformation confinement ring 20 of present embodiment is installed on the supporting-point i.e. bearing 16 with rotary shaft 4 in multiple dividing plates 6
Two dividing plates 6 of lie farthest away.That is, the dividing plate 6 that confinement ring 20 is installed near outlet 15A, 15B is deformed.In other words, deform
Confinement ring 20 be installed in multiple dividing plate 6A corresponding with the first impeller sets 3A most by middle position C sides dividing plate A, Yi Jiyu
The dividing plate 6B of middle position C sides is most depended in the corresponding multiple dividing plate 6B of second impeller sets 3B.
According to above-mentioned embodiment, the confining part for being configured at gap S deforms the change that confinement ring 20 plays suppression dividing plate 6
Shape, the function of displacement.Thereby, it is possible to suppress the relative position of the meront associated with the displacement of dividing plate 6 and the grade rotary body of rotor 2
Change, prevent contact of the meront with rotary body.
In addition, being formed as the deformation confinement ring 20 of ring-type for being set to confining part to be embedded in the outer peripheral face of dividing plate 6, and make
The outer peripheral face of deformation confinement ring 20 is abutted with the inner peripheral surface of housing 7.Thus, the gap S between dividing plate 6 and housing 7 can keep
For constant.In addition, it is also possible to suppress the deformation of dividing plate 6.In other words, dividing plate 6 can be suppressed to carry out displacement along radial direction.Thus,
It is prevented from being come in contact in the gap of sealing device 5.
In addition, by forming deformation confinement ring 20 by resin, it is possible to increase the slip between housing 7 and deformation confinement ring 20
Property.
In addition, by the way that deformation confinement ring 20 is configured near the C of middle position, can effectively suppress to be located at and rotary shaft 4
Support be the dividing plate 6 near the middle position C of the lie farthest away of bearing 16 displacement.
In addition, by the confinement ring configuration deformation confinement ring 20, Neng Goufang of groove 21 formed along the outer peripheral face in dividing plate 6
Only deform confinement ring 20 axially to offset.
It should be noted that the deformation confinement ring 20 of above-mentioned embodiment has in the circumferential identical cross sectional shape, but
It is not limited to this.For example, it is also possible to variation as shown in Figure 3 is like that, it is formed with week in the outer peripheral face of deformation confinement ring 20B
It is upwardly formed as equally spaced groove 24.
It is set to like that intermittently configure multiple distance piece 20C's in the circumferential alternatively, it is also possible to variation as shown in Figure 4
Structure.The gap that distance piece 20C for example can be configured between dividing plate 6 and housing 7 by being adhered to dividing plate 6.
According to above-mentioned variation, it is possible to increase the sliding between housing 7 and confining part 20B, 20C.
(second embodiment)
Hereinafter, the confining part of second embodiment of the present invention is illustrated based on accompanying drawing.It should be noted that in this reality
In applying mode, the main distinctive points illustrated with above-mentioned first embodiment, to same part, the description thereof will be omitted.
As shown in figure 5, the confining part of present embodiment is and is configured at the phase each other near the position of middle position C
Keyway 22 and the key component 20D chimeric with keyway 22 that adjacent dividing plate 6A, 6B is continuously formed.The keyway of present embodiment
Two positions of the 22 and key component 20D both sides for being arranged at dividing plate 6.
Keyway 22 is the rectangular groove of the cross sectional shape for axially extending.
The embedded keyways 22 being continuously formed with dividing plate 6A, 6B of key component 20D.Can also be using fastening members such as screw elements
Key component 20D is fixed on into dividing plate 6.In addition, key component 20D not only can adopt two ends as shown in Figure 5 for square
Key component, it would however also be possible to employ at least one party in two ends is circular key component.The shape of keyway 22 need not be with key component 20D mono-
Cause, the length on long side direction is longer than key component 20D.
In addition, above-mentioned keyway 22 and key component 20D are arranged at two positions of the both sides of dividing plate 6, but it is not limited to
This, it is also possible to it is arranged at top.Alternatively, it is also possible to be set to only arrange the structure of keyway 22 and key component 20D at a position.
According to above-mentioned embodiment, using key component 20D the combination of axially connected dividing plate 6 can be made to become firm.By
This, can suppress dividing plate 6 to be subjected to displacement, and in the case where sealing device 5 is arranged at into dividing plate 6, be prevented from sealing device 5
Gap come in contact.
It should be noted that the technical scope of the present invention is not limited to above-mentioned embodiment, can be without departing from this
Various changes in addition in the range of bright purport.
For example, in the respective embodiments described above, confining part is applied to into centrifugal compressor, but as long as being to include having
The rotor of impeller, the housing that rotor is surrounded from outer circumferential side and mark off fluid by impeller pressurized delivered stream dividing plate
Centrifugal rotary machine.For example, it is also possible to the confining part of the respective embodiments described above is applied to into centrifugal pump.
Industrial applicability
According to the centrifugal rotary machine, the meront associated with the deformation of dividing plate, displacement and rotary body can be suppressed
The change of relative position, prevents contact of the meront with rotary body.
Description of reference numerals：
1 centrifugal compressor；
2 rotors；
3 impellers；
4 rotary shafts；
5 sealing devices；
6th, 6A, 6B dividing plate；
7 housings；
8 disk components；
9 blades；
10 shields；
11A, 11B suction inlet；
12A, 12B, 14A, 14B connection stream (stream)；
13A, 13B housing stream (stream)；
15A, 15B outlet；
16 bearings；
17 dummy pistons；
20th, 20B deformations confinement ring (confining part)；
20C distance pieces (confining part)；
20D key components；
21 confinement ring grooves；
22 keyways；
24 grooves；
G process gas (fluid)；
P axis；
S gaps.
Claims (6)
1. a kind of centrifugal rotary machine, wherein,
The centrifugal rotary machine possesses：
Rotor, it has the rotary shaft for rotating about the axis and the impeller rotated together with the rotary shaft；
Housing, it surrounds the rotor from outer circumferential side；
Dividing plate, it is set between the rotor and the housing along axis direction to be laminated with multiple, and is formed by the leaf
The stream of the fluid of wheel pressurized delivered；And
Confining part, it constrains the dividing plate from outer circumferential side.
2. the centrifugal rotary machine according to claim 1, wherein,
The confining part is the ring of the ring-type of the outer peripheral face for being embedded in the dividing plate, the outer peripheral face of the ring be formed as with it is described
The inner peripheral surface of housing is abutted.
3. centrifugal rotary machine according to claim 2, wherein,
The confining part is formed by resin.
4. the centrifugal rotary machine according to Claims 2 or 3, wherein,
The groove for circumferentially, equally spaced being formed is formed with the outer peripheral face of the confining part.
5. centrifugal rotary machine according to claim 1, wherein,
The confining part is the keyway and the key component chimeric with the keyway being continuously formed with the adjacent dividing plate.
6. centrifugal rotary machine according to any one of claim 1 to 5, wherein,
The impeller includes：
First impeller sets, its first side being configured on axis direction simultaneously makes the fluid towards the axis direction of the rotary shaft
On middle position circulation；With
Second impeller sets, its second side contrary with first side being configured on axis direction simultaneously makes the fluid towards institute
The middle position circulation on the axis direction of rotary shaft is stated,
The centrifugal rotary machine has the both ends for being arranged at the rotary shaft and by the rotation e axle supporting to revolve
The bearing for turning,
The confining part is arranged near the middle position of the dividing plate.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2014164735A JP2016040461A (en) | 2014-08-13 | 2014-08-13 | Centrifugal rotary machine |
| JP2014-164735 | 2014-08-13 | ||
| PCT/JP2015/051049 WO2016024409A1 (en) | 2014-08-13 | 2015-01-16 | Centrifugal rotary machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106574635A true CN106574635A (en) | 2017-04-19 |
Family
ID=55304044
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201580042896.2A Pending CN106574635A (en) | 2014-08-13 | 2015-01-16 | Centrifugal rotary machine |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US20170226896A1 (en) |
| EP (1) | EP3171037A4 (en) |
| JP (1) | JP2016040461A (en) |
| CN (1) | CN106574635A (en) |
| WO (1) | WO2016024409A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108425859A (en) * | 2018-01-29 | 2018-08-21 | 固耐重工（苏州）有限公司 | Magnetic suspension Large-power High-Speed centrifuge multi-stage compression structure |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR3063778A1 (en) | 2017-03-08 | 2018-09-14 | BD Kompressor GmbH | CENTRIFUGAL TURBOCHARGER |
| JP7012616B2 (en) * | 2018-08-06 | 2022-01-28 | 株式会社日立インダストリアルプロダクツ | Centrifugal multi-stage compressor |
| IT201800011099A1 (en) * | 2018-12-14 | 2020-06-14 | Nuovo Pignone Tecnologie Srl | PROPANE DE-HYDROGENATION SYSTEM WITH A SINGLE BOX REACTOR EFFLUENT COMPRESSOR AND METHOD |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3044684A (en) * | 1961-02-24 | 1962-07-17 | Cooper Bessemer Corp | Centrifugal compressor construction |
| JPS61247897A (en) * | 1985-04-25 | 1986-11-05 | Mitsubishi Heavy Ind Ltd | Vibration-proof structure for centrifugal compressor |
| US5087172A (en) * | 1989-02-13 | 1992-02-11 | Dresser-Rand Company, A General Partnership | Compressor cartridge seal method |
| CN201428625Y (en) * | 2009-05-27 | 2010-03-24 | 沈阳鼓风机集团有限公司 | Single-axis multi-stage centrifugal blower |
| JP2011111990A (en) * | 2009-11-27 | 2011-06-09 | Mitsubishi Heavy Ind Ltd | Centrifugal compressor |
| CN202946434U (en) * | 2012-11-09 | 2013-05-22 | 沈阳透平机械股份有限公司 | Sealing structure used for reducing centrifugal compressor gas excitation |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5954800A (en) * | 1982-09-22 | 1984-03-29 | Hitachi Ltd | Horizontally separated casing |
| EP1860326A1 (en) * | 2006-05-26 | 2007-11-28 | Siemens Aktiengesellschaft | Multistage turbocompressor |
| JP5868646B2 (en) * | 2011-09-28 | 2016-02-24 | 三菱重工コンプレッサ株式会社 | Rotating machine |
| JP5931708B2 (en) * | 2012-12-04 | 2016-06-08 | 三菱重工業株式会社 | Sealing device and rotating machine |
| JP5951477B2 (en) * | 2012-12-28 | 2016-07-13 | 三菱重工業株式会社 | Diaphragm connection structure, rotating machine, and manufacturing method of rotating machine |
| US9303655B2 (en) * | 2013-07-08 | 2016-04-05 | Dresser-Rand Company | Seal for a high-pressure turbomachine |
-
2014
- 2014-08-13 JP JP2014164735A patent/JP2016040461A/en active Pending
-
2015
- 2015-01-16 US US15/503,135 patent/US20170226896A1/en not_active Abandoned
- 2015-01-16 EP EP15831349.4A patent/EP3171037A4/en not_active Withdrawn
- 2015-01-16 WO PCT/JP2015/051049 patent/WO2016024409A1/en active Application Filing
- 2015-01-16 CN CN201580042896.2A patent/CN106574635A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3044684A (en) * | 1961-02-24 | 1962-07-17 | Cooper Bessemer Corp | Centrifugal compressor construction |
| JPS61247897A (en) * | 1985-04-25 | 1986-11-05 | Mitsubishi Heavy Ind Ltd | Vibration-proof structure for centrifugal compressor |
| US5087172A (en) * | 1989-02-13 | 1992-02-11 | Dresser-Rand Company, A General Partnership | Compressor cartridge seal method |
| CN201428625Y (en) * | 2009-05-27 | 2010-03-24 | 沈阳鼓风机集团有限公司 | Single-axis multi-stage centrifugal blower |
| JP2011111990A (en) * | 2009-11-27 | 2011-06-09 | Mitsubishi Heavy Ind Ltd | Centrifugal compressor |
| CN202946434U (en) * | 2012-11-09 | 2013-05-22 | 沈阳透平机械股份有限公司 | Sealing structure used for reducing centrifugal compressor gas excitation |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108425859A (en) * | 2018-01-29 | 2018-08-21 | 固耐重工（苏州）有限公司 | Magnetic suspension Large-power High-Speed centrifuge multi-stage compression structure |
Also Published As
| Publication number | Publication date |
|---|---|
| EP3171037A4 (en) | 2017-08-09 |
| EP3171037A1 (en) | 2017-05-24 |
| WO2016024409A1 (en) | 2016-02-18 |
| JP2016040461A (en) | 2016-03-24 |
| US20170226896A1 (en) | 2017-08-10 |
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Application publication date: 20170419 |
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