CN109356866A - A kind of flexibility treated casing centrifugal compressor - Google Patents
A kind of flexibility treated casing centrifugal compressor Download PDFInfo
- Publication number
- CN109356866A CN109356866A CN201811580833.4A CN201811580833A CN109356866A CN 109356866 A CN109356866 A CN 109356866A CN 201811580833 A CN201811580833 A CN 201811580833A CN 109356866 A CN109356866 A CN 109356866A
- Authority
- CN
- China
- Prior art keywords
- partition
- mounting groove
- spiral case
- screw
- impeller
- 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.)
- Granted
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Classifications
-
- 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
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D27/00—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids
- F04D27/02—Surge control
- F04D27/0207—Surge control by bleeding, bypassing or recycling fluids
- F04D27/0215—Arrangements therefor, e.g. bleed or by-pass valves
-
- 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
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention discloses a kind of flexible treated casing centrifugal compressors, including spiral case and impeller, two side ends offer outlet passageway inside spiral case, spiral case front side surface offers air inlet in inlet channel, two side ends offer gas outlet at outlet passageway inside spiral case, impeller installation cavity is interconnected with inlet channel and outlet passageway respectively, inlet channel two sidewalls offer casing slot, partition is laterally fixedly installed in casing slot, partition side surface is provided with flexible baffle, is formed and is had the gap between flexible baffle outboard end and casing bottom surface.What the present invention carried out on the basis of not changing original centrifugal compressor spiral case treated casing mechanism, it is simple and convenient, flow losses are in turn avoided to a certain extent while further widening centrifugal compressor stable operation range, effectively prevent the reduction of centrifugal compressor efficiency.
Description
Technical field
The present invention relates to centrifuge industry technology fields, more specifically, in particular to a kind of flexible treated casing centrifugation
Compressor.
Background technique
Wheeled compressor includes axial-flow type and centrifugal two kinds of fundamental types.Axial-flow compressor single-stage Asia is than low, circulation
Ability is strong, is suitable for large-scale multi-stage compression system.Compared with axial-flow compressor, centrifugal-flow compressor have single-stage pressure ratio it is high,
The features such as structure is simple, small in size, light-weight, and higher efficiency can be kept in wider range of operation, thus extensively
Applied to fields such as vehicle, ship, part industry and aviations.
Centrifugal compressor is one of core key part of internal combustion engine turbocharger.In recent years, combustion engine energy-saving and CO2
The technical requirements such as emission reduction, internal combustion engine high power density, plateau power recovery are higher and higher, pushed internal-combustion engine booster compression ratio
It is continuously improved.Centrifugal compressor is rapidly reduced as vane type machinery, stable operation range with the raising of pressure ratio, it is difficult to
Meet Vehicular internal combustion engine use demand, the aerodynamic stability of centrifugal compressor and the steady research of expansion are the core and difficulty of the area research
Point.
Centrifugal compressor treated casing technology is the axial groove at inducer casing, can greatly widen steady operation model
It encloses, and low in cost.In blocking operating condition, axial groove passes the fluid through its bypass, to increase blocking flow；Permit in nearly surging condition
Perhaps impeller is drawn by the conduit and reentered to stall fluid, to postpone surge.But traditional machine pocket is rigidity
Structure, the width of slot do not change with centrifugal compressor operating condition and are changed, and which has limited it to expand steady ability, and affect and calm the anger
The maximal efficiency of machine.
Summary of the invention
The purpose of the present invention is to provide a kind of flexible treated casing centrifugal compressors.
In order to achieve the above object, The technical solution adopted by the invention is as follows: a kind of flexibility treated casing centrifugal compressor,
Including spiral case and impeller, it is fixedly plugged with rotary shaft in the middle part of the impeller, the surface that impeller is in inside spiral case is fixedly installed with
Multiple groups blade, spiral case inside middle part laterally offer inlet channel, offer impeller installation cavity at impeller inside spiral case,
Two side ends offer outlet passageway inside spiral case, and the impeller is mounted in impeller installation cavity, and the spiral case front side surface exists
Inlet channel offers air inlet, and two side ends offer gas outlet, the impeller installation cavity at outlet passageway inside spiral case
It is interconnected respectively with inlet channel and outlet passageway, the inlet channel two sidewalls offer casing slot, and casing slot is close
One side opening of impeller installation cavity is conduit import, and casing slot is channel outlet, equal cross in casing slot close to one side opening of air inlet
To partition is fixedly installed with, the partition side surface is provided with flexible baffle, the flexible baffle outboard end and casing slot bottom table
It is formed and is had the gap between face.
Further, the partition is fixedly mounted in the middle part of casing slot.
Further, the flexible baffle has clamping plate close to the fixed engaging of a side end surface of partition, and the partition leans on
Mounting groove is offered into one side surface of impeller installation cavity, the flexible baffle is inserted in mounting groove by clamping plate, the partition
Outer surface is provided with screw at mounting groove, and flexible baffle and Boards wall are mounted on mounting groove by screw by the partition
Interior, the screw cap end of the screw is fixedly welded on partition outer surface.
Further, the flexible baffle has clamping plate close to the fixed engaging of a side end surface of partition, and the partition leans on
Mounting groove is offered into one side surface of air inlet, the flexible baffle is inserted in mounting groove by clamping plate, the partition appearance
Face is provided with screw at mounting groove, and flexible baffle and Boards wall are mounted in mounting groove by the partition by screw, institute
The screw cap end for stating screw is fixedly welded on partition outer surface.
Further, the flexible baffle has clamping plate, the partition pair close to the fixed engaging of a side end surface of partition
Mounting groove should be offered in one side surface of casing bottom surface medium position, the flexible baffle is inserted in mounting groove by clamping plate
Interior, the partition outer surface is provided with screw at mounting groove, and the partition is pacified flexible baffle and Boards wall by screw
In mounting groove, the screw cap end of the screw is fixedly welded on partition outer surface.
Compared with the prior art, the advantages of the present invention are as follows:
A kind of flexible treated casing centrifugal compressor of the present invention places flexible baffle in casing slot, do not change it is original from
It is carried out on the basis of heart compressor volute treated casing mechanism, it is simple and convenient, stablize work further widening centrifugal compressor
Make in turn avoid flow losses to a certain extent while range, effectively prevents the reduction of centrifugal compressor efficiency.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
It obtains other drawings based on these drawings.
Fig. 1 is a kind of cross-sectional view of flexibility treated casing centrifugal compressor in the embodiment of the present invention 1；
Fig. 2 is structure enlargement diagram at A in Fig. 1；
Fig. 3 is a kind of cross-sectional view of flexibility treated casing centrifugal compressor in the embodiment of the present invention 2；
Fig. 4 is a kind of cross-sectional view of flexibility treated casing centrifugal compressor in the embodiment of the present invention 3
In figure: 1 spiral case, 11 inlet channels, 111 air inlets, 12 impeller installation cavitys, 13 outlet passageways, 14 gas outlets, 2 leaves
Wheel, 21 blades, 3 rotary shafts, 4 flexible baffles, 41 clamping plates, 5 casing slots, 51 conduit imports, 52 channel outlets, 6 partitions, 61 installations
Slot.
Specific embodiment
The preferred embodiment of the present invention is described in detail with reference to the accompanying drawing, so that advantages and features of the invention energy
It is easier to be readily appreciated by one skilled in the art, so as to make a clearer definition of the protection scope of the present invention.
Embodiment one
Refering to fig. 1 and shown in Fig. 2, the present invention provides a kind of flexible treated casing centrifugal compressor, including spiral case 1 and impeller
2, it is characterised in that: rotary shaft 3 is fixedly plugged in the middle part of impeller 2, the surface that impeller 2 is in inside spiral case 1 is fixedly installed with more
Group blade 21,1 inside middle part of spiral case laterally offer inlet channel 11, offer impeller installation cavity at impeller 2 inside spiral case 1
12,1 inside two side ends of spiral case offer outlet passageway 13, and impeller 2 is mounted in impeller installation cavity 12,1 front side surface of spiral case
Air inlet 111 is offered in inlet channel 11,1 inside two side ends of spiral case offer gas outlet 14, leaf at outlet passageway 13
It takes turns installation cavity 12 to be interconnected with inlet channel 11 and outlet passageway 13 respectively, 11 two sidewalls of inlet channel offer casing slot
5, casing slot 5 is conduit import 51 close to one side opening of impeller installation cavity, and casing slot 5 is slot close to 111 1 side opening of air inlet
Road exports 52, and partition 6 is laterally fixedly installed in casing slot 5, and partition 6 is fixedly mounted on 5 middle part of casing slot, 6 side table of partition
Face is provided with flexible baffle 4, is formed and is had the gap between 5 bottom surface of 4 outboard end of flexible baffle and casing slot, flexible baffle 4 is close
The fixed engaging of one side end surface of partition 6 has clamping plate 41, and partition 6 leans on into 12 1 side surface of impeller installation cavity and offers mounting groove
61, flexible baffle 4 is inserted in mounting groove 61 by clamping plate 41, and 6 outer surface of partition is provided with screw, partition at mounting groove 61
6 are fixedly mounted on flexible baffle 4 and clamping plate 41 in mounting groove 61 by screw, and the screw cap end of screw is fixedly welded on partition 6
Outer surface.
Embodiment two
Refering to Fig. 3, the difference between this embodiment and the first embodiment lies in: flexible baffle 4 is equal close to a side end surface of partition 6
Fixed engaging has clamping plate 41, and partition 6 leans on into 111 1 side surface of air inlet and offers mounting groove 61, and flexible baffle 4 passes through clamping plate 41
It is inserted in mounting groove 61,6 outer surface of partition is provided with screw at mounting groove 61, and partition 6 passes through screw for 4 He of flexible baffle
Clamping plate 41 is fixedly mounted in mounting groove 61, and the screw cap end of screw is fixedly welded on 6 outer surface of partition.
Embodiment three
Refering to Fig. 3, the difference between this embodiment and the first embodiment lies in: flexible baffle 4 is equal close to a side end surface of partition 6
Fixed engaging has clamping plate 41, and partition 6 corresponds to 5 bottom surface medium position of casing slot, one side surface and offers mounting groove 61, flexible
Baffle 4 is inserted in mounting groove 61 by clamping plate 41, and 6 outer surface of partition is provided with screw at mounting groove 61, and partition 6 passes through spiral shell
Flexible baffle 4 and clamping plate 41 are fixedly mounted in mounting groove 61 by nail, and the screw cap end of screw is fixedly welded on 6 outer surface of partition.
Working principle: nearby pressure is not much different 2 conduit of impeller with environmental pressure under normal circumstances, and flexible baffle 4 is curved
Qu Chengdu is small, and gas is not easy the outflow of slave pocket 5, reduces flow losses, can improve compressor efficiency to a certain extent.And
In operating condition of the compressor in nearly surge, 51 pressure of conduit import is greater than the pressure of ambient air, and 52 pressure of channel outlet is lower than
Environment atmospheric pressure, flexible baffle 4 can bend under the action of pressure difference, and with the increase of pressure difference and bending degree is continuous
It increases, the circulation area of gas is also continuously increased, and stall fluid is able to slave pocket 5 and returns in inlet channel 11.And close
51 pressure of conduit import is lower than environmental pressure under the operating condition of blocking, and flexible baffle 4 can bend under the action of this pressure difference, volume
Outer flow enters in inlet channel 11 the blocking flow for increasing compressor through casing slot 5.
Although the embodiments of the invention are described in conjunction with the attached drawings, but patent owner can be in appended claims
Within the scope of make various deformations or amendments, as long as it does not exceed the scope of protection described in the claims to the invention, all should
Within protection scope of the present invention.
Claims (5)
1. a kind of flexibility treated casing centrifugal compressor, including spiral case (1) and impeller (2), it is characterised in that: the impeller (2)
Middle part is fixedly plugged with rotary shaft (3), and impeller (2) is in the internal surface of spiral case (1) and is fixedly installed with multiple groups blade (21), institute
It states the internal middle part of spiral case (1) laterally to offer inlet channel (11), offers impeller installation inside spiral case (1) at impeller (2)
Chamber (12), the internal two side ends of spiral case (1) offer outlet passageway (13), and the impeller (2) is mounted on impeller installation cavity (12)
Interior, spiral case (1) front side surface offers air inlet (111) in inlet channel (11), and the internal two side ends of spiral case (1) are in outlet
Offered at channel (13) gas outlet (14), the impeller installation cavity (12) respectively with inlet channel (11) and outlet passageway
(13) it is interconnected, inlet channel (11) two sidewalls offer casing slot (5), and casing slot (5) is close to impeller installation cavity
One side opening is conduit import (51), and casing slot (5) is channel outlet (52), casing slot close to (111) one side opening of air inlet
(5) it is laterally fixedly installed with partition (6) in, partition (6) side surface is provided with flexible baffle (4), the flexible baffle
(4) it is formed and is had the gap between outboard end and casing slot (5) bottom surface.
2. a kind of flexible treated casing centrifugal compressor according to claim 1, it is characterised in that: the partition (6) is solid
Dingan County is in the middle part of casing slot (5).
3. a kind of flexible treated casing centrifugal compressor according to claim 1, it is characterised in that: the flexible baffle
(4) the fixed engaging of a side end surface close to partition (6) has clamping plate (41), and the partition (6) is leaned on into impeller installation cavity (12)
One side surface offers mounting groove (61), and the flexible baffle (4) is inserted in mounting groove (61) by clamping plate (41), it is described every
Plate (6) outer surface is provided with screw at mounting groove (61), and the partition (6) passes through screw for flexible baffle (4) and clamping plate
(41) it is fixedly mounted in mounting groove (61), the screw cap end of the screw is fixedly welded on partition (6) outer surface.
4. a kind of flexible treated casing centrifugal compressor according to claim 1, it is characterised in that: the flexible baffle
(4) the fixed engaging of a side end surface close to partition (6) has clamping plate (41), and the partition (6) is leaned on into air inlet (111) side
Surface offers mounting groove (61), and the flexible baffle (4) is inserted in mounting groove (61) by clamping plate (41), the partition
(6) outer surface is provided with screw at mounting groove (61), and the partition (6) passes through screw for flexible baffle (4) and clamping plate (41)
It is fixedly mounted in mounting groove (61), the screw cap end of the screw is fixedly welded on partition (6) outer surface.
5. a kind of flexible treated casing centrifugal compressor according to claim 1, it is characterised in that: the flexible baffle
(4) the fixed engaging of a side end surface close to partition (6) has clamping plate (41), and the partition (6) corresponds to casing slot (5) bottom table
One side surface of Middle face position offers mounting groove (61), and the flexible baffle (4) is inserted in mounting groove by clamping plate (41)
(61) in, partition (6) outer surface is provided with screw at mounting groove (61), and the partition (6) is kept off flexibility by screw
Plate (4) and clamping plate (41) are fixedly mounted in mounting groove (61), and the screw cap end of the screw is fixedly welded on partition (6) appearance
Face.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811580833.4A CN109356866B (en) | 2018-12-24 | 2018-12-24 | Flexible casing treatment centrifugal compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811580833.4A CN109356866B (en) | 2018-12-24 | 2018-12-24 | Flexible casing treatment centrifugal compressor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109356866A true CN109356866A (en) | 2019-02-19 |
| CN109356866B CN109356866B (en) | 2020-12-04 |
Family
ID=65329958
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811580833.4A Expired - Fee Related CN109356866B (en) | 2018-12-24 | 2018-12-24 | Flexible casing treatment centrifugal compressor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109356866B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110118200A (en) * | 2019-06-14 | 2019-08-13 | 东风汽车集团有限公司 | Compressor housings and compressor |
| CN111622978A (en) * | 2019-02-27 | 2020-09-04 | 三菱重工业株式会社 | Centrifugal compressor and turbocharger |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003106293A (en) * | 2001-09-28 | 2003-04-09 | Mitsubishi Heavy Ind Ltd | Fluid machinery |
| CN204200674U (en) * | 2014-06-27 | 2015-03-11 | 哈尔滨工程大学 | The centrifugal-flow compressor casing bleed recirculation structure of variable geometry |
| CN105570157A (en) * | 2015-12-28 | 2016-05-11 | 潍柴动力股份有限公司 | Booster system and low noise control method |
| CN107035721A (en) * | 2017-03-14 | 2017-08-11 | 合肥工业大学 | A kind of adjustable centrifugal compressor processor box of groove width |
| US20170260987A1 (en) * | 2016-03-11 | 2017-09-14 | Daikin Applied Americas Inc. | Centrifugal compressor with casing treatment bypass |
-
2018
- 2018-12-24 CN CN201811580833.4A patent/CN109356866B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003106293A (en) * | 2001-09-28 | 2003-04-09 | Mitsubishi Heavy Ind Ltd | Fluid machinery |
| CN204200674U (en) * | 2014-06-27 | 2015-03-11 | 哈尔滨工程大学 | The centrifugal-flow compressor casing bleed recirculation structure of variable geometry |
| CN105570157A (en) * | 2015-12-28 | 2016-05-11 | 潍柴动力股份有限公司 | Booster system and low noise control method |
| US20170260987A1 (en) * | 2016-03-11 | 2017-09-14 | Daikin Applied Americas Inc. | Centrifugal compressor with casing treatment bypass |
| CN107035721A (en) * | 2017-03-14 | 2017-08-11 | 合肥工业大学 | A kind of adjustable centrifugal compressor processor box of groove width |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111622978A (en) * | 2019-02-27 | 2020-09-04 | 三菱重工业株式会社 | Centrifugal compressor and turbocharger |
| CN111622978B (en) * | 2019-02-27 | 2021-09-07 | 三菱重工业株式会社 | Centrifugal compressor and turbocharger |
| CN110118200A (en) * | 2019-06-14 | 2019-08-13 | 东风汽车集团有限公司 | Compressor housings and compressor |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109356866B (en) | 2020-12-04 |
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