CN106471261A - Centrifugal compressor - Google Patents
Centrifugal compressor Download PDFInfo
- Publication number
- CN106471261A CN106471261A CN201580035234.2A CN201580035234A CN106471261A CN 106471261 A CN106471261 A CN 106471261A CN 201580035234 A CN201580035234 A CN 201580035234A CN 106471261 A CN106471261 A CN 106471261A
- Authority
- CN
- China
- Prior art keywords
- spray
- hole
- annular portion
- line part
- centrifugal compressor
- 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.)
- Pending
Links
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
- F01D9/00—Stators
- F01D9/06—Fluid supply conduits to nozzles or the like
- F01D9/065—Fluid supply or removal conduits traversing the working fluid flow, e.g. for lubrication-, cooling-, or sealing fluids
-
- 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
- F04D29/70—Suction grids; Strainers; Dust separation; Cleaning
- F04D29/701—Suction grids; Strainers; Dust separation; Cleaning especially adapted for elastic fluid pumps
- F04D29/705—Adding liquids
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
- B08B3/02—Cleaning by the force of jets or sprays
-
- 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
- F04D29/00—Details, component parts, or accessories
- F04D29/60—Mounting; Assembling; Disassembling
- F04D29/62—Mounting; Assembling; Disassembling of radial or helico-centrifugal 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
- F04D29/70—Suction grids; Strainers; Dust separation; Cleaning
-
- 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
- F01D25/002—Cleaning of turbomachines
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
- Cleaning By Liquid Or Steam (AREA)
Abstract
The centrifugal compressor that the present invention provides possesses：There is the main casing of entrance and outlet；At least one impeller in the inside of described main casing is configured in the way of can rotating；Connect with described entrance and from described entrance, detached position has the suction casing of suction inlet in the axial direction；The washer fluid spraying apparatus of the described suction inlet side in the inside of described suction casing can be configured；And to described washer fluid spraying apparatus supply cleanout fluid cleaning solution supplying device, described washer fluid spraying apparatus have the inside of described suction casing can be configured to along intersects with described axis direction face extension pipe and the multiple spray-holes being arranged at described pipe.
Description
Technical field
The present invention relates to centrifugal compressor.
Background technology
Patent Document 1 discloses a kind of centrifugal compressor, it possesses：Have entrance and outlet main casing and
The impeller of the inside in main casing is configured in the way of can rotating.This centrifugal compressor possesses：Using impeller as cleaning object
And supply the supplying tubing of cleanout fluid and be arranged on the entrance side of main casing and by the cleanout fluid supplying from supplying tubing to leaf
The cleanout fluid injection nozzle of wheel surface injection.According to this centrifugal compressor, the dust being attached to impeller surface is cleaned by liquid flushing
Fall.
Citation
Patent documentation
Patent documentation 1：Japanese Unexamined Patent Publication 8-338397 publication
Brief summary of the invention
Invention technical task to be solved
In centrifugal compressor disclosed in patent documentation 1, from a cleanout fluid spray of the entrance being arranged on main casing
Penetrate nozzle jet cleaning liquid.In this case, due to cleanout fluid injection nozzle only, and from cleanout fluid injection nozzle to
The distance of impeller is short, therefore fully cannot spread before reaching impeller from the cleanout fluid of cleanout fluid injection nozzle injection.Therefore,
Cleanout fluid possibly cannot cannot equalize and fully clean impeller equably in the whole region of flow path width on the whole
Surface.
Content of the invention
In view of the foregoing, the purpose of at least one embodiment of the present invention is to provide a kind of centrifugal compressor, should be from
Heart compressor can make cleanout fluid equably throughout the whole region of flow path width, can equalize on the whole and fully clean leaf
The surface of wheel.
Means for solving the problems
(1) centrifugal compressor involved by least one embodiment of the present invention is characterised by possessing：
Main casing, it has entrance and outlet；
At least one impeller, it is configured in the inside of described main casing in the way of can rotating；
Suction casing, it is connected with described entrance, from described entrance, detached position has suction inlet in the axial direction；
Washer fluid spraying apparatus, it can configure the described suction inlet side in the inside of described suction casing；And
Cleaning solution supplying device, it supplies cleanout fluid to described washer fluid spraying apparatus,
Described washer fluid spraying apparatus have：
Pipe, it can be configured to extend along the face intersecting with described axis direction in the inside of described suction casing；With
And
Multiple spray-holes, its setting is on the tube.
According to the structure of above-mentioned (1), by from multiple spray-hole jet cleaning liquid, cleanout fluid can be made in suction casing
Dispersion.And, because cleanout fluid scattered in suction casing fully spread before reaching impeller, therefore cleanout fluid can be equal
Evenly throughout the whole region of flow path width, equalize and fully clean the surface of impeller on the whole.
(2) in some embodiments, on the basis of the structure of above-mentioned (1),
Described pipe can keep out of the way position in the outside of the operating position of the inside of described suction casing and described suction casing
Reciprocal between putting.
According to the structure of above-mentioned (2), due to pipe can be made to be located at operating position in the cleaning of impeller, make pipe when usual
Keep out of the way retreating position, therefore when usual, with impeller clean when compared with can reduce flow path resistance in suction casing.
(3) in some embodiments, on the basis of the structure of above-mentioned (1) or (2),
Described pipe includes overlooking circular annular portion,
The plurality of spray-hole is arranged at described annular portion in the way of circumferentially distributed along described annular portion.
According to the structure of above-mentioned (3), due to from being arranged at the multiple of annular portion in the way of circumferentially distributed along annular portion
Spray-hole jet cleaning liquid, therefore, it is possible to make cleanout fluid circumference dispersion along annular portion in suction casing.And, circumferentially divide
Scattered cleanout fluid can spread before reaching impeller.As a result, cleanout fluid can be equably whole throughout flow path width
Region, equalizes and fully cleans the surface of impeller on the whole.
(4) in some embodiments, on the basis of the structure of above-mentioned (3),
At least a portion spray-hole in the plurality of spray-hole is arranged on the inner peripheral surface of described annular portion.
According to the structure of above-mentioned (4), by the multiple spray-holes from the inner peripheral surface being arranged on annular portion towards annular portion
Central-injection cleanout fluid, thus enables that cleanout fluid is circumferentially dispersed in the inner side of annular portion.And, due to cleanout fluid
Injection direction intersects with respect to the flow direction of fluid, and therefore circumferentially homodisperse cleanout fluid is expanded by the flowing of fluid
Dissipate.Therefore, cleanout fluid can equalize and fully clean the table of impeller on the whole equably throughout the whole region of flow path width
Face.Further, since from annular portion towards radially inner side jet cleaning liquid, therefore, it is possible to suppress cleanout fluid to be attached in suction casing
Wall.Thereby, it is possible to reduce the waste of the cleanout fluid of the cleaning being not used for impeller.
(5) in some embodiments, on the basis of the structure of above-mentioned (3),
At least a portion spray-hole in the plurality of spray-hole is arranged on the upstream side of described annular portion.
According to the structure of above-mentioned (5), due to the multiple spray-hole jet cleaning liquid from the upstream side being arranged on annular portion, because
This makes cleanout fluid fully spread by the fluid of the internal flow in suction casing.Thus, cleanout fluid can be equably throughout stream
The whole region of degree of having a lot of social connections, equalizes and fully cleans the surface of impeller on the whole.
(6) in some embodiments, on the basis of any structure in above-mentioned (3)～(5),
Described pipe includes overlooking circular path annular portion, this path annular portion little with described annular portion phase diameter group and
With described annular portion concentric arrangement,
At least a portion spray-hole in the plurality of spray-hole is in the way of circumferentially distributed along described path annular portion
It is arranged at described path annular portion.
According to the structure of above-mentioned (6), due to from being arranged at path annulus in the way of circumferentially distributed along path annular portion
Multiple spray-hole jet cleaning liquid in portion, therefore also can be reliably to the center of inside supply of the suction casing away from annular portion
Cleanout fluid.And, the cleanout fluid spraying from the spray-hole being arranged at path annular portion passes through the center of inside stream in suction casing
Dynamic fluid and fully spread.Thus, cleanout fluid can equalize and fill equably throughout the whole region of flow path width on the whole
Divide the surface of ground cleaning impeller.
(7) in some embodiments, on the basis of any structure in above-mentioned (3) to (5),
At least one line part of 2 points on circumference that described pipe includes link described annular portion,
At least a portion spray-hole in the plurality of spray-hole is divided with the length direction along at least one line part described
The mode of cloth is arranged at described line part.
According to the structure of above-mentioned (7), due to from the length direction distribution with the line part along link annular portion 2 points
Multiple spray-hole jet cleaning liquid that mode is arranged, therefore also can be reliably in the inside away from the suction casing of annular portion
Centre supply cleanout fluid.And, the cleanout fluid spraying from the spray-hole being arranged at line part passes through the center of inside in suction casing
Flowing fluid and fully spread.Thus, cleanout fluid can equably throughout the whole region of flow path width, on the whole equilibrium and
Fully clean the surface of impeller.
(8) in some embodiments, on the basis of any structure in above-mentioned (3) to (5),
Described pipe includes being radially oriented, from described annular portion, at least one protuberance that center projects,
At least a portion spray-hole in described spray-hole is arranged at described protuberance.
According to the structure of above-mentioned (8), due to from the spray-hole jet cleaning liquid being arranged at protuberance, therefore also can be reliable
Ground supplies cleanout fluid to the center of inside of the suction casing away from annular portion.And, spray from the spray-hole being arranged at protuberance
Cleanout fluid by suction casing center of inside flowing fluid and fully spread.Thus, cleanout fluid can equably time
And the whole region of flow path width, equalize and fully clean the surface of impeller on the whole.
(9) in some embodiments, on the basis of any structure in above-mentioned (1) or (2),
Described pipe includes at least one linear line part,
The plurality of spray-hole by along at least one line part described length direction distribution in the way of be arranged at described in extremely
A few line part.
According to the structure of above-mentioned (9), due to from the multiple spray-hole jet cleanings being arranged in the way of being distributed along line part
Liquid, therefore, it is possible to make cleanout fluid length direction dispersion along line part in suction casing.And, it is scattered along its length clear
Washing liquid can spread before reaching impeller.As a result, cleanout fluid can be whole equably throughout the whole region of flow path width
Equalize and fully clean the surface of impeller on body.
(10) in some embodiments, on the basis of the structure of above-mentioned (9),
The plurality of spray-hole is arranged on the upstream side of at least one line part described.
According to the structure of above-mentioned (10), due to the multiple spray-hole injections from the upstream side being arranged at least one line part
Cleanout fluid, therefore makes cleanout fluid fully spread by the fluid of the internal flow in suction casing.Thus, cleanout fluid can be uniform
Ground, throughout the whole region of flow path width, equalizes and fully cleans the surface of impeller on the whole.
(11) in some embodiments, on the basis of the structure of above-mentioned (9) or (10),
The plurality of spray-hole is arranged on the both sides on the width of at least one line part described.
According to the structure of above-mentioned (11), multiple due to the both sides on the width being arranged at least one line part
Spray-hole jet cleaning liquid, therefore, it is possible to make the length direction along line part in suction casing for the cleanout fluid be uniformly dispersed.And
And, the homodisperse cleanout fluid of length direction along line part can spread before reaching impeller.Thus, cleanout fluid can be equal
Evenly throughout the whole region of flow path width, equalize and fully clean the surface of impeller on the whole.
Invention effect
According at least one embodiment of the present invention, can make cleanout fluid equably throughout the whole region of flow path width,
Equalize and fully clean the surface of impeller on the whole.
Brief description
Fig. 1 is the longitudinal section of the structure schematically illustrating the centrifugal compressor involved by one embodiment of the present invention.
Fig. 2 be shown in solid lines the state making the washer fluid spraying apparatus shown in Fig. 1 enter into operating position and with imagination
The longitudinal section of the state that line illustrates to make washer fluid spraying apparatus keep out of the way retreating position.
Fig. 3 is the vertical view cutaway drawing schematically illustrating the washer fluid spraying apparatus involved by an embodiment.
Fig. 4 is the vertical view cutaway drawing schematically illustrating the washer fluid spraying apparatus involved by an embodiment.
Fig. 5 is the vertical view cutaway drawing schematically illustrating the washer fluid spraying apparatus involved by an embodiment.
Fig. 6 is the vertical view cutaway drawing schematically illustrating the washer fluid spraying apparatus involved by an embodiment.
Fig. 7 is the sectional elevation schematically illustrating the washer fluid spraying apparatus involved by an embodiment.
Fig. 8 is the vertical view cutaway drawing schematically illustrating the washer fluid spraying apparatus involved by an embodiment.
Fig. 9 is the sectional elevation schematically illustrating the washer fluid spraying apparatus involved by an embodiment.
Specific embodiment
Some embodiments hereinafter, with reference to the accompanying drawings of the present invention.But, record as embodiment or accompanying drawing
The scope of the present invention is not defined in this, only only by the size of shown component parts, material, shape, its relative configuration etc.
It is that example is described.
For example, " in some directions ", " along certain direction ", " parallel ", " orthogonal ", " " center ", " concentric " or " coaxial "
Not only closely represent such configuration Deng the expression representing relative or absolute configuration, also illustrate that with tolerance or can obtain
The angle of the degree of identical function or distance and the state of relative displacement.
In addition, for example, quadrilateral shape, drum etc. represent that the expression of shape not only represents geometrically under precise meanings
Quadrilateral shape, the shape such as drum, can obtain also illustrating that including jog, chamfered section etc. in the range of same effect
Shape.
On the other hand, " have ", " outfit ", " possessing ", " inclusion " or " having " structural element such expression simultaneously
It is not the exclusiveness expression of the presence of exclusion other structures key element.
Fig. 1 is the sectional view schematically illustrating the structure of centrifugal compressor 1 involved by one embodiment of the present invention.
As shown in Figure 1, the centrifugal compressor 1 involved by embodiments of the present invention is the centrifugation pressure of single-shaft multi-stage formula
Contracting machine, possess main casing 2, at least one impeller 3, suction casing 41,42, discharge housing 51,52, washer fluid spraying apparatus 6 with
And cleaning solution supplying device 7.
Main casing 2 has entrance 21,22 and outlet 23,24.Main casing 2 involved by present embodiment is respectively at two
Position possesses entrance 21,22 and outlet 23,24.
On the other hand, rotary shaft 37 insertion main casing 2 in the way of can rotating configures.Specifically, rotary shaft 37 quilt
It is separately positioned on the bearing of journals 27A, 27B of the both sides of main casing 2 and thrust bearing 28A, 28B support as rotating.
Entrance 21,22 and outlet 23,24 arrange along rotary shaft 37, in FIG, from left side be configured with successively entrance 21,
Outlet 23, outlet 24 and entrance 22.Adjacent entrance 21 and a pair of outlet 23 formation, adjacent entrance 22 and outlet 24 formation
A pair.Outlet 23 is connected with each other by pipe arrangement (not shown) with entrance 22.
In the inside of main casing 2, as at least one impeller 3, impeller 31～33 and impeller 34～36 are rotating
Mode configure.
Impeller 31～33 and impeller 34～36 are respectively relative to rotary shaft 37 and fix with one heart.Specifically, impeller 31～
Partly going up of the rotary shaft 37 extending between entrance 21 and outlet 23 is fixed in 33 series connection, and impeller 34～36 series connection is fixed on
Between entrance 22 and outlet 24, the rotary shaft 37 of extension partly goes up.
Impeller 31～33 and impeller 34～36 are internally formed stream R in main casing 2 respectively.Inside in main casing 2
It is provided with bubbler 25,26 as the static stream being connected in series the stream R of impeller 31～33 and impeller 34～36.
Suction casing 41,42 is connected with entrance 21,22, with respect to axis M from entrance 21,22 to suction casing 41,42,
N direction, the such as detached position in lower section have suction inlet 41A, 42A.Suction casing 41,42 is with from suction inlet 41A, 42A court
The reduced diameter to entrance 21,22, with from suction inlet 41A, 42A towards entrance 21,22 flow path section amass gradually subtract
Few.In the present embodiment, suction casing 41,42 is configured to, with the flow path section shape generally circular in shape of suction inlet 41A, 42A side
The flow path section of shape and entrance 21,22 sides is shaped as the mode of rectangular shape, with from suction inlet 41A, 42A side towards entrance
21st, 22 sides make the flow path section shape of suction casing 41,42 gradually be deformed into rectangular shape from round-shaped.
Discharge housing 51,52 23,24 to be connected with outlet, with respect to exporting 23, the 24 axis sides to discharge housing 51,52
To, the such as detached position in lower section, there is outlet 51A, 52A.For example, axis M, N direction of suction casing 41,42 and row
The axis direction going out housing 51,52 is orthogonal with the axis direction of rotary shaft 37.
In centrifugal compressor 1, the fluid of compressed object is made to be flowed into from suction inlet 41A by making rotary shaft 37 rotate
In suction casing 41.The fluid of compressed object through entrance 21, by stream R and the bubbler 25 of the impeller 31～33 of rotation
And compressed.Afterwards, the fluid through overcompression passes through to export 23 and discharges housing 51 temporarily to the outside discharge of main casing 2.
Flow into from suction inlet 42A after by chiller cooling for example (not shown) from the fluid discharging housing 51 discharge
To in suction casing 42.The fluid flowing into through entrance 22, by stream R and the bubbler 26 of the impeller 34～36 of rotation
Compressed.Afterwards, the fluid through overcompression passes through to export 24 and discharges the outside discharge to main casing 2 for the housing 52.
Washer fluid spraying apparatus 6 can configure the suction inlet 41A side of the inside of the suction casing 41 in a side, from cleanout fluid
Feedway 7 supplies cleanout fluid to washer fluid spraying apparatus 6.
In washer fluid spraying apparatus 6, off and on from cleaning solution supplying device in the state of making centrifugal compressor 1 operate
7 supply cleanout fluid to washer fluid spraying apparatus 6.Supply cleanout fluid to washer fluid spraying apparatus 6 to being flowed into suction casing 41
The fluid injection as compressed object, in the fluid as compressed object disperse, together with the fluid as compressed object
Reach the surface of impeller 31～33.The cleanout fluid reaching the surface of impeller 31～33 rinses out the surface being attached to impeller 31～33
Dust, cleaning impeller 31～33 surface.
In addition, in some embodiments, the inside of suction casing 41 have can be configured to along with axis M direction
Pipe 61 and the multiple spray-holes 62 (with reference to Fig. 3) being arranged at pipe 61 that the face intersecting extends.
According to this structure, by from multiple spray-hole 62 jet cleaning liquid, thus, it is possible to make cleaning in suction casing 41
Liquid disperses.And, because the cleanout fluid after disperseing in suction casing 41 fully spread before reaching impeller 3, therefore clean
Liquid equably throughout the whole region of flow path width, can equalize and fully clean the surface of impeller 31～33 on the whole.
Fig. 2 be shown in solid lines make the pipe 61 shown in Fig. 1 be located at suction casing 41 the state of the operating position of inside and
The state of the retreating position of outside being illustrated with imaginary line (double dot dash line) to make the pipe 61 shown in Fig. 1 keep out of the way suction casing 41
Longitudinal section.
As shown in Figure 2, in some embodiments, pipe 61 can the operating position of the inside of suction casing 41 with
Reciprocal between the retreating position of the outside of suction casing 41.
According to this structure, pipe 61 can be made when impeller cleans to be located at operating position, so that pipe 61 is kept out of the way when usual and move back
Keep away position.Thereby, it is possible to reduce the flow path resistance in suction casing 41 with impeller compared with when cleaning when usual.
Pipe 61 back and forth can manually or power set (not shown) are carried out, for example, based in the case of manually,
Pipe 61 can be made reciprocal by carrying out rotation process to handle (not shown), in the case of power set, can be by making
Power set operate and make pipe 61 reciprocal.
Fig. 3～Fig. 6 is the vertical view cutaway drawing illustrating the washer fluid spraying apparatus involved by an embodiment.
As Fig. 3～as shown in Figure 6, in some embodiments, pipe 61 includes overlooking circular annular portion 63, multiple
At least a portion spray-hole 62A in spray-hole 62 is arranged at annular portion 63 in the way of circumferentially distributed along annular portion 63.
According to this structure, due to from the multiple injections being arranged at annular portion 63 in the way of circumferentially distributed along annular portion 63
Hole 62A jet cleaning liquid, therefore, it is possible to make cleanout fluid circumference dispersion along annular portion 63 in suction casing 41.And, in week
Scattered cleanout fluid can spread before reaching impeller 31 upwards.As a result, cleanout fluid can be equably throughout stream width
The whole region of degree, can equalize and fully clean the surface of impeller 31～33 on the whole.
The diameter of annular portion 63 and set location can arbitrarily set, for example, both can be with along suction casing 41
The mode of inwall is set to larger diameter it is also possible to be set to and the diameter of size that connects in entrance 21, with respect to stream center with
The heart is arranged.If being set to larger diameter in the way of the inwall along suction casing 41, cleanout fluid is along suction casing 41
Inwall flows, and can make cleanout fluid throughout the both sides to flow path width.On the other hand, if being set to and the size that connects in entrance 21
Diameter, is arranged concentrically with respect to stream center (section center), then cleanout fluid can be suppressed to be attached to the inwall of suction casing 41
Situation, reduce be not used for impeller 31～33 the cleanout fluid of cleaning waste.
As shown in Figure 3, in some embodiments, at least a portion spray-hole 62A in multiple spray-holes 62 sets
Put the inner peripheral surface in annular portion 63.
According to this structure, by the multiple spray-hole 62A from the inner peripheral surface being arranged on annular portion 63 towards annular portion 63
Central-injection cleanout fluid, thus enables that cleanout fluid is circumferentially dispersed in the inner side of annular portion 63.And, due to cleanout fluid
Injection direction intersect with respect to the flow direction of fluid, the therefore upper homodisperse cleanout fluid of circumference is by the flowing of fluid
Diffusion.Therefore, cleanout fluid can be equably throughout the whole region of flow path width, equilibrium and fully cleaning impeller 31 on the whole
～33 surface.Further, since being radially oriented inner side jet cleaning liquid from annular portion 63, therefore, it is possible to suppress cleanout fluid to be attached to
The situation of the internal face of suction casing 41.Thereby, it is possible to reduce the waste of the cleanout fluid of the cleaning being not used for impeller 31～33.
It is arranged on the circumferential position of multiple spray-hole 62A of the inner peripheral surface of annular portion 63 and diameter can arbitrarily set,
For example, it is possible to make being distributed in the circumference of annular portion 63 uniformly of multiple spray-hole 62A, and make the diameter of multiple spray-hole 62A
Identical, so that equably jet cleaning liquid.Or it is contemplated that the reduced pressure in annular portion 63 is it is also possible to make multiple spray-holes
The region being distributed near the supply unit 64 of supply cleanout fluid of 62A is sparse, in the area intensive away from supply unit 64.If such as
This, because cleanout fluid equably sprays in suction casing 41, therefore cleanout fluid can be equably whole throughout flow path width
Region, equalizes and fully cleans the surface of impeller 31～33 on the whole.
Fig. 7 is the sectional elevation schematically illustrating the washer fluid spraying apparatus involved by an embodiment.
As shown in Figure 7, in some embodiments, at least a portion spray-hole 62B in multiple spray-holes 62 sets
Put the upstream side in annular portion 63, oblique towards upstream open.
According to this structure, due to the multiple spray-hole 62B from the upstream side being arranged on annular portion 63 oblique towards injected upstream
Cleanout fluid, the fluid H hence with the internal flow in suction casing 41 makes cleanout fluid fully spread.Thus, cleanout fluid can
Equably throughout the whole region of flow path width, equalize and fully clean the surface of impeller 31～33 on the whole.
It is arranged on the circumferential position of multiple spray-hole 62B of the upstream side of annular portion 63 and diameter can arbitrarily set,
For example, it is possible to make multiple spray-hole 62B's to be distributed in annular portion 63 uniformly, and make multiple spray-hole 62B diameter identical, with
Just equably jet cleaning liquid.Or it is considered to the reduced pressure in annular portion 63 is it is also possible to make the distribution of multiple spray-hole 62A
Sparse in the region of the supply unit 64 near supply cleanout fluid, in the area intensive away from supply unit 64.If it does, due to cleaning
Liquid equably sprays in suction casing 41, and therefore cleanout fluid can be equably throughout the whole region of flow path width, on the whole
The surface of equilibrium and fully cleaning impeller 31～33.
As shown in Figure 4, in some embodiments, pipe 61 includes and and annulus less with annular portion 63 phase diameter group
Portion 63 configures in the path annular portion 65 circular with vertical view in the heart, at least a portion spray-hole in multiple spray-holes 62
62C is arranged at path annular portion 65 in the way of circumferentially distributed along path annular portion 65.
According to this structure, due to from being arranged at path annular portion 65 in the way of circumferentially distributed along path annular portion 65
Multiple spray-hole 62C jet cleaning liquid, therefore can also be reliably to the center of inside of the suction casing 41 away from annular portion 63
Supply cleanout fluid.And, the cleanout fluid spraying from the spray-hole 62C being arranged at path annular portion 65 passes through in suction casing 41
Center of inside flowing fluid and fully spread.Thus, cleanout fluid can be overall equably throughout the whole region of flow path width
The surface of upper equilibrium and fully cleaning impeller 31～33.
As long as the diameter of path annular portion 65 is less than annular portion 63, can arbitrarily set.Thus, for example, can be by annulus
Portion 63 is set to larger diameter in the way of the inwall along suction casing 41, by path annular portion 65 be set to entrance 21 in connect
The diameter of size, and it is arranged on stream center.In addition, path annular portion 65 need not necessarily lie in and annular portion identical plane, example
As it is also possible to path annular portion 65 is arranged on the downstream of annular portion 63.
In addition, being arranged at the circumferential position of multiple spray-hole 62C of path annular portion 65 and diameter can arbitrarily set,
For example, it is possible to make being distributed in the circumference of path annular portion 65 uniformly of multiple spray-hole 62C, and make multiple spray-hole 62C's
Diameter is identical, so that equably jet cleaning liquid.Or it is considered to the reduced pressure of path annular portion 65 is it is also possible to make multiple sprays
The region being distributed near the supply unit 64 of supply cleanout fluid of perforation 62A is sparse, in the area intensive away from supply unit 64.If
So, because cleanout fluid equably sprays in suction casing 41, therefore cleanout fluid can be equably whole throughout flow path width
Individual region, equalizes and fully cleans the surface of impeller 31～33 on the whole.
As shown in Figure 5, in some embodiments, pipe 61 include link annular portion 63 circumference on 2 points extremely
A few line part 66, at least a portion spray-hole 62D in multiple spray-holes 62 is with the length direction distribution along line part 66
Mode be arranged at line part 66.
According to this structure, due to from the length direction distribution being set to the line part 66 along link annular portion 63 2 points
Multiple spray-hole 62D jet cleaning liquid, therefore also can be reliably to the center of inside of the suction casing 41 away from annular portion 63
Supply cleanout fluid.And, the cleanout fluid spraying from the spray-hole 62D being arranged at line part 66 passes through in the inside of suction casing 41
Central authorities flowing fluid and fully spread.Thus, cleanout fluid can be equably throughout the whole region of flow path width, on the whole all
The surface of weighing apparatus and fully cleaning impeller 31～33.
It is arranged at the circumferential position of multiple spray-hole 62D of line part 66 and diameter can arbitrarily set, for example, both may be used
Be disposed at equal intervals so as equably jet cleaning liquid it is also possible to be set near supply unit 64 region sparse and away from
The area intensive of supply unit.In this case, the diameter of multiple spray-hole 62D is identical, sprays same traffic from each spray-hole 62D
Cleanout fluid.If it does, the surface of impeller 31～33 can be equalized on the whole and fully clean.
In addition, in some modes, pipe 61 includes the first straight line portion 66A at the center through annular portion and first
The second straight line portion 66B that the both sides of line part 66A and first straight line portion 66A are abreast arranged.And, in multiple spray-holes 62
At least a portion spray-hole 62D is arranged in the way of the length direction distribution along first straight line portion 66A and second straight line portion 66B
In first straight line portion 66A and second straight line portion 66B.In addition, multiple spray-hole 62D are arranged at first straight line portion 66A's
Both sides on width.If it does, due to the multiple spray-holes from the length direction distribution being set to along first straight line portion 66A
62D jet cleaning liquid, the fluid hence with the center of inside flowing in suction casing 41 makes cleanout fluid fully spread.Thus,
Cleanout fluid can equalize and fully clean the table of impeller 31～33 on the whole equably throughout the whole region of flow path width
Face.
In addition, the circumference of the spray-hole 62D along the length direction setting of first straight line portion 66A and second straight line portion 66B
Position and diameter can arbitrarily set, for example, it is possible to make multiple spray-hole 62D with straight along first straight line portion 66A and second
The mode of the length direction distribution of line portion 66B is arranged at first straight line portion 66A and second straight line portion 66B, equably to spray
Penetrate cleanout fluid.In this case, the diameter of multiple spray-hole 62D is identical, sprays the cleaning of same traffic from each spray-hole 62D
Liquid.If it does, due to equably jet cleaning liquid, therefore cleanout fluid can be whole equably throughout the whole region of flow path width
Equalize and fully clean the surface of impeller 31～33 on body.
As shown in Figure 6, in some embodiments, pipe 61 include from annular portion 63 be radially oriented center project to
A few protuberance 67, at least a portion spray-hole 62E in spray-hole 62 is arranged at protuberance 67.
According to this structure, due to from the spray-hole 62E jet cleaning liquid being arranged at protuberance 67, therefore can also be reliably
Supply cleanout fluid to the center of inside of the suction casing 41 away from annular portion 63.And, from being arranged at the spray-hole of protuberance 67
The cleanout fluid of 62E injection is fully spread by the fluid in the center of inside flowing of suction casing 41.Thus, cleanout fluid can
Equably throughout the whole region of flow path width, equalize and fully clean the surface of impeller 31～33 on the whole.
Specifically, pipe 61 includes being radially oriented the position (annular portion 63) of annular portion 63 quartering from circumference respectively
Four protuberances 67 that center projects, at least a portion spray-hole 62E in spray-hole 62 is arranged at protuberance 67.In more detail
Say, at least a portion spray-hole 62E in spray-hole 62 is arranged on the front end of protuberance 67 and the width of protuberance 67
Both sides.If it does, due to from the spray-hole 62E jet cleaning liquid being arranged at protuberance 67, therefore passing through in suction casing 41
Center of inside flowing fluid so that cleanout fluid is fully spread.Thus, cleanout fluid can be equably whole throughout flow path width
Region, equalizes and fully cleans the surface of impeller 31～33 on the whole.
Fig. 8 is the vertical view cutaway drawing schematically illustrating the washer fluid spraying apparatus involved by an embodiment.
As shown in Figure 8, in some embodiments, pipe 61 includes at least one linear line part 68, multiple
Spray-hole 62E is arranged at least one line part 68 in the way of the length direction distribution along at least one line part 68.
According to this structure, due to from being set to the multiple spray-hole 62E jet cleaning liquid along line part 68 distribution, therefore can
Enough make cleanout fluid length direction dispersion along line part in suction casing 41.And, scattered cleaning liquid energy along its length
Enough diffusions before reaching impeller 31～33.As a result, cleanout fluid can be whole equably throughout the whole region of flow path width
Equalize and fully clean the surface of impeller 31～33 on body.
The set location of line part 68 can arbitrarily set, for example, it is possible to be set to cross the stream of suction casing 41.If
It is set to cross the stream of suction casing 41, then cleanout fluid is also equably ejected into the stream central authorities of suction casing 41, therefore clearly
Washing liquid can equalize and fully clean the surface of impeller 31～33 on the whole equably throughout the whole region of flow path width.
Fig. 9 is the sectional elevation schematically illustrating the cleaning injection apparatus involved by an embodiment.
As shown in Figure 9, in some embodiments, multiple spray-hole 62F are arranged at least one line part 68
Upstream side, oblique towards upstream open.
According to this structure, due to the oblique court of multiple spray-hole 62F from the upstream side being arranged at least one line part 68
Injected upstream cleanout fluid, therefore makes cleanout fluid fully spread by the fluid H of the internal flow in suction casing 41.Thus, clearly
Washing liquid can equalize and fully clean the surface of impeller 31～33 on the whole equably throughout the whole region of flow path width.
It is arranged on the lengthwise location of multiple spray-hole 62F of the upstream side of line part 68 and diameter can arbitrarily set
Fixed, for example, it is possible to multiple spray-hole 62F are set at equal intervals, so that equably jet cleaning liquid.In addition, both can be set to
Middle section intensive and the two side areas becoming its both sides sparse it is also possible to be set to sparse and becoming it in middle section
The two side areas of both sides are intensive.In this case, the diameter of multiple spray-hole 62F is identical, sprays same stream from each spray-hole 62F
The cleanout fluid of amount.If it does, due to equably jet cleaning liquid, therefore cleanout fluid can be equably whole throughout flow path width
Region, equalizes and fully cleans the surface of impeller 31～33 on the whole.
As shown in Figure 9, in some embodiments, multiple spray-hole 62F are arranged at least one line part 68
Both sides on width.
According to this structure, due to multiple spray-holes of the both sides on the width being arranged at least one line part 68
62F jet cleaning liquid, therefore, it is possible to make cleanout fluid be uniformly dispersed along the length direction of line part 68 in suction casing 41.And
And, the homodisperse cleanout fluid of length direction along line part 68 can spread before reaching impeller 31～33.Thus, clean
Liquid energy enough equably throughout the whole region of flow path width, equalizes and fully cleans the surface of impeller 31～33 on the whole.
Above-mentioned pipe 61, annular portion 63, path annular portion 65, line part 66, first straight line portion 66A, second straight line portion
As long as the shape that the section shape of 66B, protuberance 67 and line part 68 is suitable for the injection of cleanout fluid then can arbitrarily select,
For instance, it is possible to arbitrarily select toroidal, elliptical shape, oblong shape, streamline shape or tear-drop shape etc..
In addition, pipe 61, annular portion 63, path annular portion 65, line part 66, first straight line portion 66A, second straight line portion 66B,
As long as the size that the flow path section of protuberance 67 and line part 68 amasss the injection being suitable for cleanout fluid then can arbitrarily set, example
As being set as uniformly big from multiple spray-holes 62, the flow of the cleanout fluid of 62A, 62B, 62C, 62D, 62E injection or pressure
Little.Specifically, by pipe 61, annular portion 63, path annular portion 65, line part 66, first straight line portion 66A, second straight line portion
The section shape of 66B, protuberance 67 and line part 68 be set to round-shaped in the case of, by pipe 61, annular portion 63, path circle
Ring portion 65, line part 66, first straight line portion 66A, the flow path section of second straight line portion 66B, protuberance 67 and line part 68 amass
It is set as more than 10 times of sectional area of spray-hole 62,62A, 62B, 62C, 62D, 62E.
The invention is not restricted to above-mentioned embodiment, also include above-mentioned embodiment be with the addition of with the mode of deformation or incite somebody to action
The appropriately combined mode of above-mentioned mode.
For example, pipe 61 can also include annular portion 63 and line part 68, for example, it is also possible to be set to position in axis M side
Stagger upwards.In such a situation it is preferred that annular portion 63 is arranged at entrance 21, line part 68 is arranged on annular portion and entrance 21
Between.
Reference
1 centrifugal compressor
2 main casings
21st, 22 entrance
23rd, 24 outlet
25th, 26 bubblers (static stream)
27A, 27B bearing of journals
28A, 28B thrust bearing
3rd, 31～36 impeller
37 rotary shafts
6 washer fluid spraying apparatus
7 cleaning solution supplying devices
41st, 42 suction casing
41A, 42A suction inlet
51st, 52 discharge housing
51A, 52A outlet
61 pipes
62nd, 62A, 62B, 62C, 62D, 62E, 62F spray-hole
63 annular portion
64 supply units
65 path annular portion
66 line parts
66A first straight line portion
66B second straight line portion
67 protuberances
68 line parts
R stream
M axis
N axis
Claims (11)
1. a kind of centrifugal compressor is it is characterised in that possess：
Main casing, it has entrance and outlet；
At least one impeller, it is configured in the inside of described main casing in the way of can rotating；
Suction casing, it is connected with described entrance, from described entrance, detached position has suction inlet in the axial direction；
Washer fluid spraying apparatus, it can configure the described suction inlet side in the inside of described suction casing；And
Cleaning solution supplying device, it supplies cleanout fluid to described washer fluid spraying apparatus,
Described washer fluid spraying apparatus have：
Pipe, it can be configured to extend along the face intersecting with described axis direction in the inside of described suction casing；And
Multiple spray-holes, its setting is on the tube.
2. centrifugal compressor according to claim 1 it is characterised in that
Described pipe can the retreating position of the operating position of the inside of described suction casing and the outside of described suction casing it
Between reciprocal.
3. centrifugal compressor according to claim 1 and 2 it is characterised in that
Described pipe includes overlooking circular annular portion,
The plurality of spray-hole is arranged at described annular portion in the way of circumferentially distributed along described annular portion.
4. centrifugal compressor according to claim 3 it is characterised in that
At least a portion spray-hole in the plurality of spray-hole is arranged on the inner peripheral surface of described annular portion.
5. centrifugal compressor according to claim 3 it is characterised in that
At least a portion spray-hole in the plurality of spray-hole is arranged on the upstream side of described annular portion.
6. the centrifugal compressor according to any one of claim 3 to 5 it is characterised in that
Described pipe includes overlooking circular path annular portion, this path annular portion little with described annular portion phase diameter group and with institute
State annular portion concentric arrangement,
At least a portion spray-hole in the plurality of spray-hole is arranged in the way of circumferentially distributed along described path annular portion
In described path annular portion.
7. the centrifugal compressor according to any one of claim 3 to 5 it is characterised in that
At least one line part of 2 points on circumference that described pipe includes link described annular portion,
At least a portion spray-hole in the plurality of spray-hole is distributed with the length direction along at least one line part described
Mode is arranged at described line part.
8. the centrifugal compressor according to any one of claim 3 to 5 it is characterised in that
Described pipe includes being radially oriented, from described annular portion, at least one protuberance that center projects,
At least a portion spray-hole in described spray-hole is arranged at described protuberance.
9. centrifugal compressor according to claim 1 and 2 it is characterised in that
Described pipe includes at least one linear line part,
The plurality of spray-hole by along at least one line part described length direction distribution in the way of be arranged at described at least one
Individual line part.
10. centrifugal compressor according to claim 9 it is characterised in that
The plurality of spray-hole is arranged on the upstream side of at least one line part described.
11. centrifugal compressors according to claim 9 or 10 it is characterised in that
The plurality of spray-hole is arranged on the both sides on the width of at least one line part described.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2014191514A JP2016061261A (en) | 2014-09-19 | 2014-09-19 | Centrifugal compressor |
| JP2014-191514 | 2014-09-19 | ||
| PCT/JP2015/061885 WO2016042826A1 (en) | 2014-09-19 | 2015-04-17 | Centrifugal compressor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106471261A true CN106471261A (en) | 2017-03-01 |
Family
ID=55532873
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201580035234.2A Pending CN106471261A (en) | 2014-09-19 | 2015-04-17 | Centrifugal compressor |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US20170226881A1 (en) |
| EP (1) | EP3196481A1 (en) |
| JP (1) | JP2016061261A (en) |
| CN (1) | CN106471261A (en) |
| WO (1) | WO2016042826A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113272523A (en) * | 2018-12-27 | 2021-08-17 | 诺沃皮尼奥内技术股份有限公司 | Stator aerodynamic component with nozzle and method for cleaning a turbomachine |
| CN118622712A (en) * | 2024-08-09 | 2024-09-10 | 佛山市肯富来工业泵有限公司 | A multistage centrifugal pump |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP7108515B2 (en) * | 2018-10-25 | 2022-07-28 | 三菱重工コンプレッサ株式会社 | compressor |
| CN118959330B (en) * | 2024-10-14 | 2025-01-24 | 深圳市大麦智创科技有限公司 | An air flow driving assembly for an industrial air cooler and a driving method thereof |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05141397A (en) * | 1991-11-15 | 1993-06-08 | Hitachi Ltd | Impeller washing device for rotary machine having impeller |
| JPH07269302A (en) * | 1994-03-30 | 1995-10-17 | Mitsubishi Heavy Ind Ltd | Blade washing method of axial flow compressor and device thereof |
| JPH08338397A (en) * | 1995-06-14 | 1996-12-24 | Hitachi Ltd | Impeller washing device of single-shaft multistage centrifugal compressor |
| US6413043B1 (en) * | 2000-11-09 | 2002-07-02 | General Electric Company | Inlet guide vane and shroud support contact |
| CN1908383A (en) * | 2005-08-04 | 2007-02-07 | 通用电气公司 | Gas turbine on-line compressor water wash system |
| CN101191426A (en) * | 2006-11-28 | 2008-06-04 | 燃气涡轮机效率瑞典公司 | Washing system and method for cleaning aviation compressor |
| JP2012229701A (en) * | 2009-08-21 | 2012-11-22 | Gas Turbine Efficiency Sweden Ab | Staged compressor water wash system |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7703272B2 (en) * | 2006-09-11 | 2010-04-27 | Gas Turbine Efficiency Sweden Ab | System and method for augmenting turbine power output |
| EP2052792A3 (en) * | 2007-10-09 | 2011-06-22 | Gas Turbine Efficiency Sweden AB | Drain valve, washing system and sensing of rinse and wash completion |
-
2014
- 2014-09-19 JP JP2014191514A patent/JP2016061261A/en not_active Withdrawn
-
2015
- 2015-04-17 WO PCT/JP2015/061885 patent/WO2016042826A1/en active Application Filing
- 2015-04-17 CN CN201580035234.2A patent/CN106471261A/en active Pending
- 2015-04-17 US US15/503,145 patent/US20170226881A1/en not_active Abandoned
- 2015-04-17 EP EP15842413.5A patent/EP3196481A1/en not_active Withdrawn
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05141397A (en) * | 1991-11-15 | 1993-06-08 | Hitachi Ltd | Impeller washing device for rotary machine having impeller |
| JPH07269302A (en) * | 1994-03-30 | 1995-10-17 | Mitsubishi Heavy Ind Ltd | Blade washing method of axial flow compressor and device thereof |
| JPH08338397A (en) * | 1995-06-14 | 1996-12-24 | Hitachi Ltd | Impeller washing device of single-shaft multistage centrifugal compressor |
| US6413043B1 (en) * | 2000-11-09 | 2002-07-02 | General Electric Company | Inlet guide vane and shroud support contact |
| CN1908383A (en) * | 2005-08-04 | 2007-02-07 | 通用电气公司 | Gas turbine on-line compressor water wash system |
| CN101191426A (en) * | 2006-11-28 | 2008-06-04 | 燃气涡轮机效率瑞典公司 | Washing system and method for cleaning aviation compressor |
| JP2012229701A (en) * | 2009-08-21 | 2012-11-22 | Gas Turbine Efficiency Sweden Ab | Staged compressor water wash system |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113272523A (en) * | 2018-12-27 | 2021-08-17 | 诺沃皮尼奥内技术股份有限公司 | Stator aerodynamic component with nozzle and method for cleaning a turbomachine |
| CN113272523B (en) * | 2018-12-27 | 2024-02-27 | 诺沃皮尼奥内技术股份有限公司 | Stator aerodynamic component with nozzle and method for cleaning a turbomachine |
| CN118622712A (en) * | 2024-08-09 | 2024-09-10 | 佛山市肯富来工业泵有限公司 | A multistage centrifugal pump |
| CN118622712B (en) * | 2024-08-09 | 2024-10-18 | 佛山市肯富来工业泵有限公司 | Multistage centrifugal pump |
Also Published As
| Publication number | Publication date |
|---|---|
| EP3196481A1 (en) | 2017-07-26 |
| JP2016061261A (en) | 2016-04-25 |
| US20170226881A1 (en) | 2017-08-10 |
| WO2016042826A1 (en) | 2016-03-24 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106471261A (en) | Centrifugal compressor | |
| EP1138955B1 (en) | Method and apparatus for increasing the efficiency of a multi-stage compressor | |
| JP5675121B2 (en) | Centrifugal compressor and cleaning method | |
| CN104105886B (en) | Rotary machine | |
| CN106471260A (en) | Centrifugal compressor | |
| CN106215733B (en) | A kind of pressure break powder liquid blending device | |
| EP3241998B1 (en) | Turbofan engine and a method for exhausting breather air of an oil separator in a turbofan engine | |
| CN101721829B (en) | Revolving bed | |
| JP5575308B2 (en) | Centrifugal compressor | |
| KR101559812B1 (en) | A Vacuum Pump Ejector | |
| EP2562430A1 (en) | Method for washing an axial compressor | |
| JP5869044B2 (en) | Centrifugal compressor | |
| JP5461143B2 (en) | Centrifugal compressor | |
| US9441870B2 (en) | Snow making apparatus | |
| US10598449B2 (en) | Self-rotating tube cleaning nozzle assembly | |
| WO2011089155A2 (en) | Device and method for cleaning a face seal of a jet engine | |
| JP5307680B2 (en) | Centrifugal compressor | |
| JP5536261B2 (en) | Centrifugal compressor | |
| JP7108515B2 (en) | compressor | |
| CN111250476A (en) | Residual liquid removal device | |
| IT201800021067A1 (en) | STATOR AERODYNAMIC COMPONENTS WITH NOZZLES AND METHODS FOR CLEANING A TURBOMACHINE | |
| CN111466593B (en) | Agricultural fruit vegetables belt cleaning device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20170301 |