CN106762839A - Eliminate the large-scale vapor scroll casing of centrifugal compressor and its method of secondary flow loss - Google Patents
Eliminate the large-scale vapor scroll casing of centrifugal compressor and its method of secondary flow loss Download PDFInfo
- Publication number
- CN106762839A CN106762839A CN201611043324.9A CN201611043324A CN106762839A CN 106762839 A CN106762839 A CN 106762839A CN 201611043324 A CN201611043324 A CN 201611043324A CN 106762839 A CN106762839 A CN 106762839A
- Authority
- CN
- China
- Prior art keywords
- spiral case
- case body
- centrifugal compressor
- diffuser
- vapor
- 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
- 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
- F04D29/44—Fluid-guiding means, e.g. diffusers
- F04D29/441—Fluid-guiding means, e.g. diffusers especially adapted for elastic fluid pumps
- F04D29/444—Bladed diffusers
-
- 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
- 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
- F04D29/44—Fluid-guiding means, e.g. diffusers
- F04D29/441—Fluid-guiding means, e.g. diffusers especially adapted for elastic fluid pumps
Abstract
A kind of large-scale vapor scroll casing of centrifugal compressor and its method for eliminating secondary flow loss, belongs to evaporation and concentration and field of dynamic engineering.Spiral case proposed by the present invention by diffuser, left deflector, right deflector, the composition such as spiral case body.Using being installed at the intrinsic deflector of spiral case, effectively reduce the secondary vortex flow loss formed in process fluid flow in spiral case, the aeroperformance of spiral case is improved, while by the crossfire hole on deflector, reducing the deflector wall flow losses to be formed because boundary-layer is thickened；Additionally, reducing deflection of the spiral case body under compressor inside and outside differential pressure, supporting role is served to spiral case body, reduce the possibility that impeller is scraped with compressor case.The present invention effectively reduces flow losses of the diffuser air-flow in spiral case, improves the operational efficiency of centrifugal compressor, and improves the security that negative pressure runs centrifugal compressor, meets the target of National Industrial energy-saving and emission-reduction development strategy.
Description
Technical field
The present invention relates to a kind of large-scale vapor scroll casing of centrifugal compressor and its method for eliminating secondary flow loss, belong to steaming
Hair concentration and field of dynamic engineering.
Background technology
Vapor compressor is evaporation and concentration field, particularly the core component in vapor recompression system, by compression
The temperature and pressure of machine lifting vapor are to set up its heat transfer temperature difference with supplied materials, so that the latent heat of vapor is reclaimed, with aobvious
The energy-saving effect of work.After air-flow in compressor exits into spiral case from diffuser, due to there is secondary flow loss in spiral case,
The pneumatic efficiency for ultimately resulting in spiral case is low, and because vapor compressor is operated under condition of negative pressure, unavoidably makes spiral case
Radial deformation is produced, the scraping of impeller and casing is ultimately resulted in, the security of compressor operating is reduced.And at present to lifting water
Pistonless compressor spiral case pneumatic efficiency and the research suppressed in terms of corresponding deformation do not have and draw attention, and lack effective solution party
Method.
The content of the invention
It is an object of the invention to propose it is a kind of eliminate secondary flow loss large-scale vapor scroll casing of centrifugal compressor and its
Method.
A kind of large-scale vapor scroll casing of centrifugal compressor for eliminating secondary flow loss, including spiral case body and positioned at spiral case sheet
Diffuser in the middle of body；
It is characterized in that：
2-3 arc deflector is disposed between spiral case body and diffuser,
The first end of arc deflector is connected with diffuser exit, and the second end extends to spiral case body outlet flow；
Arc deflector is provided with crossfire hole.
The large-scale vapor scroll casing of centrifugal compressor method of above-mentioned elimination secondary flow loss, it is characterised in that including following mistake
Journey：Enter diffuser by the vapor after impeller acceleration, vapor is led into spiral case body and arc after diffuser diffusion
Stream plate shape into several runners in, meanwhile, the air-flow between runner can radially be spread by crossfire hole, final runner
The vapor of outflow is exported through spiral case body and flowed out.
The end of arc deflector second is highly less than in the large-scale vapor scroll casing of centrifugal compressor of above-mentioned elimination secondary flow loss
Spiral case body is exported, and decile spiral case body outlet flow, advantageously reduces the flow losses that spiral case inside Secondary Flow is produced, and is carried
Rise spiral case pneumatic efficiency.
The large-scale vapor scroll casing of centrifugal compressor diffuser of above-mentioned elimination secondary flow loss is vane diffuser structure.
Be conducive to being lifted the overall flow efficiency of diffuser.
The large-scale vapor scroll casing of centrifugal compressor arc deflector of above-mentioned elimination secondary flow loss is welded with spiral case body
Entirety is connected into, is conducive to the lifting of volute structure security.
The large-scale vapor scroll casing of centrifugal compressor arc deflector first end and diffusion of above-mentioned elimination secondary flow loss
Device outlet circumference is tangent, is conducive to tissue air-flow, reduces flow losses.
Compared with prior art, the present invention at least has the following advantages that：By setting deflector, effectively tissue vapor expands
Pressure gas stream, by the airflow diversion in original spiral case, can effectively reduce vortex in spiral case, and the secondary vortex flow for particularly producing is to snail
The adverse effect of sheath gas efficiency of movement, simultaneously because the presence in crossfire hole, can make the air-flow between runner produce Radial Flow, reduces
Because deflector wall boundary-layer thickens caused boundary-layer loss, the energy head coefficient and adiabatic efficiency of compressor are improved；This
Outward, the setting of deflector actually reduces deflection of the spiral case body under compressor inside and outside differential pressure, and spiral case body is served
Supporting role, reduces the possibility that impeller is scraped with compressor case.The safety that the present invention realizes vapor compressor is high
Effect operation, improves the overall utilization ratio of the energy, meets the development strategic objective of national energy-saving emission reduction.
Brief description of the drawings
Fig. 1 is existing vapor compressor scroll；
Fig. 2 is the large-scale vapor scroll casing of centrifugal compressor that the present invention eliminates secondary flow loss；
Label title in figure：1 diffuser, 2 spiral case bodies, 3 right deflectors, 4 left deflectors, 5 crossfire holes.
Specific embodiment
The operation of the large-scale vapor scroll casing of centrifugal compressor of secondary flow loss is eliminated referring to Fig. 1, Fig. 2 explanation
Journey.
Fig. 2 is the large-scale vapor scroll casing of centrifugal compressor of elimination secondary flow loss proposed by the present invention.The work of the system
Make process as follows：Enter diffuser by the vapor after impeller acceleration, vapor enters spiral case body after diffuser diffusion
In 3 runners formed with right deflector, left deflector, meanwhile, the air-flow between runner can be by crossfire hole radially
Diffusion, the vapor of final runner outflow is exported through spiral case body and flowed out.
The above is only presently preferred embodiments of the present invention, and any formal limitation is not done to the present invention,
Those skilled in the art make a little simple modification, equivalent variations or modification using the technology contents of the disclosure above, all fall within this
In the protection domain of invention.
Claims (6)
1. a kind of large-scale vapor scroll casing of centrifugal compressor for eliminating secondary flow loss, including spiral case body（2）With positioned at spiral case
Body（2）Middle diffuser（1）；
It is characterized in that：
Spiral case body (2) and diffuser（1）Between be disposed with 2-3 arc deflector,
The first end of arc deflector is connected with diffuser exit, and the second end extends to spiral case body (2) outlet flow；
Arc deflector is provided with crossfire hole (5).
2. it is according to claim 1 eliminate secondary flow loss large-scale vapor scroll casing of centrifugal compressor, it is characterised in that：
The end of above-mentioned arc deflector second highly exports less than spiral case body (2), and decile spiral case body (2) outlet flow.
3. it is according to claim 1 eliminate secondary flow loss large-scale vapor scroll casing of centrifugal compressor, it is characterised in that：
Above-mentioned diffuser（1）It is vane diffuser structure.
4. it is according to claim 1 eliminate secondary flow loss large-scale vapor scroll casing of centrifugal compressor, it is characterised in that：
Above-mentioned arc deflector welds integral with spiral case body.
5. it is according to claim 1 eliminate secondary flow loss large-scale vapor scroll casing of centrifugal compressor, it is characterised in that：
Above-mentioned arc deflector first end is tangent with diffuser (1) outlet circumference.
6., using the method for the large-scale vapor scroll casing of centrifugal compressor for eliminating secondary flow loss described in claim 1, it is special
Levy is to include procedure below：Enter diffuser (1) by the vapor after impeller acceleration, water steams after diffuser (1) diffusion
Gas enters in several runners that spiral case body (2) is formed with arc deflector, meanwhile, the air-flow between runner can be by crossfire
Hole (5) is radially spread, and the vapor of final runner outflow is exported through spiral case body (2) and flowed out.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611043324.9A CN106762839B (en) | 2016-11-24 | 2016-11-24 | Eliminate the large-scale vapor scroll casing of centrifugal compressor and its method of secondary flow loss |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611043324.9A CN106762839B (en) | 2016-11-24 | 2016-11-24 | Eliminate the large-scale vapor scroll casing of centrifugal compressor and its method of secondary flow loss |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106762839A true CN106762839A (en) | 2017-05-31 |
| CN106762839B CN106762839B (en) | 2019-02-05 |
Family
ID=58974733
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611043324.9A Active CN106762839B (en) | 2016-11-24 | 2016-11-24 | Eliminate the large-scale vapor scroll casing of centrifugal compressor and its method of secondary flow loss |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106762839B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110360155A (en) * | 2019-08-01 | 2019-10-22 | 全浩铖 | A kind of more flow-guiding channel centrifugal pumps or radial fan shell |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3684396A (en) * | 1970-05-04 | 1972-08-15 | Hg Ind Inc | Centrifugal fan with improved cut off means |
| CN1952408A (en) * | 2005-10-20 | 2007-04-25 | 宣伯民 | Centrifugal blower having volute chamber with subchannel |
| CN1323630C (en) * | 2001-07-03 | 2007-07-04 | 尼尔森创新有限公司 | Highly efficient autonomous vacuum cleaner |
| CN104373385A (en) * | 2014-10-29 | 2015-02-25 | 珠海格力电器股份有限公司 | Volute and centrifugal fan with same |
| CN105697394A (en) * | 2016-03-07 | 2016-06-22 | 南京菲瑞克机电科技有限公司 | Micro-miniature efficient outlet flow field distortionless centrifugal fan |
-
2016
- 2016-11-24 CN CN201611043324.9A patent/CN106762839B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3684396A (en) * | 1970-05-04 | 1972-08-15 | Hg Ind Inc | Centrifugal fan with improved cut off means |
| CN1323630C (en) * | 2001-07-03 | 2007-07-04 | 尼尔森创新有限公司 | Highly efficient autonomous vacuum cleaner |
| CN1952408A (en) * | 2005-10-20 | 2007-04-25 | 宣伯民 | Centrifugal blower having volute chamber with subchannel |
| CN104373385A (en) * | 2014-10-29 | 2015-02-25 | 珠海格力电器股份有限公司 | Volute and centrifugal fan with same |
| CN105697394A (en) * | 2016-03-07 | 2016-06-22 | 南京菲瑞克机电科技有限公司 | Micro-miniature efficient outlet flow field distortionless centrifugal fan |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110360155A (en) * | 2019-08-01 | 2019-10-22 | 全浩铖 | A kind of more flow-guiding channel centrifugal pumps or radial fan shell |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106762839B (en) | 2019-02-05 |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: Large steam centrifugal compressor volute and its method for eliminating secondary flow loss Effective date of registration: 20230926 Granted publication date: 20190205 Pledgee: Industrial Bank Co.,Ltd. Taizhou Branch Pledgor: JIANGSU LEKE ENERGY SAVING TECHNOLOGY Co.,Ltd. Registration number: Y2023980058856 |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right |