CN202001377U - Centrifugal compressed intermediate casing with diffusing blades - Google Patents
Centrifugal compressed intermediate casing with diffusing blades Download PDFInfo
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- CN202001377U CN202001377U CN2011200890522U CN201120089052U CN202001377U CN 202001377 U CN202001377 U CN 202001377U CN 2011200890522 U CN2011200890522 U CN 2011200890522U CN 201120089052 U CN201120089052 U CN 201120089052U CN 202001377 U CN202001377 U CN 202001377U
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- intermediate casing
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- diffusion blade
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Abstract
The utility model discloses a centrifugal compressed intermediate casing with diffusing blades. The centrifugal compressed intermediate casing comprises a plurality of intermediate casing bodies arranged in series, and each stage of intermediate shell is internally provided with an air inlet channel and an air-exhaust diffusing channel, wherein each air-exhaust diffusing channel is internally and fixedly provided with a plurality of diffusing blades, and the diffusing blades are uniformly distributed on the corresponding intermediate shell body along a circumferential direction. In the utility model, by arranging the diffusing blades in the air-exhaust diffusing channels, high-speed airflow is decelerated so that kinetic energy is effectively converted into pressure energy, the airflow can be effectively prevented from rotating excessively to result in back flow, and the pneumatic efficiency can be improved.
Description
Technical field
The utility model relates to centrifugal gas compression technical equipment field, especially a kind of centrifugal compression intermediate casing with the diffusion blade.
Background technique
Centrifugal gas compression equipment pressing force height is divided into centrifugal compressor, centrifugal blower, centrifugal blower.Applying pressure scope separately is: centrifugal compressor＞120kPa, centrifugal blower 10-100kPa, centrifugal blower＜20kPa.The pressure of centrifugal blower has played the effect of forming a connecting link between centrifugal compressor and centrifugal blower, belong to medium-voltage equipment in whole centrifugal compression equipment, also can be regarded as the compressor of low pressure or the blower fan of high pressure.Domestic formulation commonly used " centrifugal blower " refers to centrifugal blower, correspondingly centrifugal blower is called " centrifugal high pressure fan " in order to distinguish.In the application of pressure range 100-150kPa, using centrifugal compressor is with its lower limit ability, uneconomical.Especially for being difficult to competent centrifugal compressor model under the heavy traffic condition.Chinfan
TMFull intelligent high-pressure centrifugal blower pushes away the centrifugal blower technology and goes a step further, pressure range has risen to 150kPa, and can satisfy big traffic demand up to 90000m3/h, utilize the modern computational means to make overall efficiency surpass 80%, filled up the centrifugal compression of middle pressure and be equipped in the world-technology blank that big-flow high-pressure rises scope the runner optimal design.
Chinfan
TMFull intelligent high-pressure centrifugal blower is based on gas dynamics and centrifugal principle of boosting, by complete three-dimensional gas dynamics, rotor dynamics, the calculating of dynamics of solids and analysis, press centrifugal compression equipment in the complete series that each critical component of optimal design forms, realized the compactness of complete machine, high reliability, high-performance, have considerable energy saving and environment-friendly advantage: (1) adopts multistage compression, do not need overdrive gear with the motor direct connection, a plurality of series have been planned, each serial compression unit pressure superposition, multistage flexible combination, thus broad range of flow (100-90000m3/h) and pressure range (3-150kPa) covered; (2) complicated complete three-dimensional pneumatic design analytical technology route is taked in the inner flow passage design, not only parts are carried out runner optimization, the coherence also is optimized to the complete machine aeroperformance, the performance design index that reaches world-class levels, the core component pneumatic efficiency surpasses 90%, the pneumatic efficiency of compression primitive level surpasses 85%, than traditional energy-conservation 5-20% of the centrifugal equipment of middle pressure; (3) adopt advanced structural strength finite element analysis and rotor dynamics to calculate Aided Design, effectively control the rotary component centrifugal stress, the frequency conversion rotational speed effectively is controlled at below 80% of rotor first critical speed, realize optimum structure and rotor design, thereby guarantee the reliable and stable of equipment operation; (4) adopt the international Chinfan that initiates
TMThe full intelligent frequency-conversion control of high pressure positive blower CIC
TMTechnology, in control chip, insert mathematical model, computer program, database, image data is calculated in real time, obtain the actual performance curve of blower fan, automatically finish the fully-automatic intelligent control of the data capture of on-the-spot process parameter, the monitoring of equipment and report to the police interlocking, target variable and system's control of many typhoons machine, make whole high-pressure blowing-in system operate under the optimum system effectiveness the energy-conservation 10-30% of system synthesis.
Chinfan
TMFull intelligent high-pressure centrifugal blower can be widely used in the every field of industry, municipal administration, environmental protection, comprise that steel industry, carbon black industry, paper industry, printing industry, oil refining sulfur recovery, power plant desulfurization, ore floatation, garbage loading embeading gas extract, process gas boosts, fluidized combustion, pneumatic tool, vacuumize, municipal sewage treatment, industrial sewage processing etc., have the huge market space.
The general vaneless diffuser that adopts in common centrifugal gas compression equipment.Vaneless radial diffuser has broad operating range, and simpler on making, and therefore mostly traditional centrifugal compression device is to adopt vaneless Diffuser; Because of air-flow is obstructed in grain direction, make its velocity attitude deflection bigger, flow path is longer, and frictional loss is big, and its pneumatic efficiency is not best.
The model utility content
The purpose of this utility model be to provide a kind of simple in structure, prevent air-flow excessively rotation so that reflux, can improve the centrifugal compression intermediate casing of band diffusion blade of the optimization runner design of pneumatic efficiency.
For achieving the above object, the centrifugal compression intermediate casing of the utility model band diffusion blade, comprise the some grades of intermediate casing bodies that the string installing is put, be provided with gas-entered passageway and exhaust diffusion passage in each grade intermediate casing body, wherein be provided with several diffusion blades at exhaust diffusion passage internal fixation, these diffusion blades along the circumferential direction are evenly distributed on the intermediate casing body.
Further, the inner annular channel that constitutes of the described exhaust diffusion passage sidewall that is adjacent two-stage intermediate casing body.
Further, described diffusion blade and described intermediate casing body integrally casting form.
Further, the quantity of described diffusion blade is 8～14.
Further, described diffusion blade is two-dimentional blade structure.
Further, the cross section blade profile parameters of described diffusion blade is:
| The point position | Y coordinate y/D2 | Abscissa x/D2 | The point position | Y coordinate y/D2 | Abscissa x/D2 | The point position | Y coordinate y/D2 | Abscissa x/D2 |
| 1 | 0.5000 | 0.0025 | 11 | 0.5483 | -0.1507 | 21 | 0.5366 | -0.1577 |
| 2 | 0.5022 | 0.0011 | 12 | 0.5499 | -0.1688 | 22 | 0.5332 | -0.1419 |
| 3 | 0.5051 | -0.0063 | 13 | 0.5517 | -0.1871 | 23 | 0.5293 | -0.1240 |
| 4 | 0.5115 | -0.0192 | 14 | 0.5524 | -0.2033 | 24 | 0.5257 | -0.1083 |
| 5 | 0.5204 | -0.0404 | 15 | 0.5522 | -0.2132 | 25 | 0.5215 | -0.0908 |
| 6 | 0.5286 | -0.0639 | 16 | 0.5498 | -0.2156 | 26 | 0.5158 | -0.0675 |
| 7 | 0.5355 | -0.0870 | 17 | 0.5474 | -0.2136 | 27 | 0.5094 | -0.0431 |
| 8 | 0.5407 | -0.1075 | 18 | 0.5456 | -0.2034 | 28 | 0.5031 | -0.0200 |
| 9 | 0.5433 | -0.1202 | 19 | 0.5432 | -0.1914 | 29 | 0.4998 | -0.0080 |
| 10 | 0.5471 | -0.1413 | 20 | 0.5397 | -0.1732 | 30 | 0.4976 | -0.0007 |
| 31 | 0.5000 | 0.0025 |
Wherein the round dot of x, y coordinate is on the center line of rotary main shaft, and D2 is the pitch diameter in described diffusion blade forward position.
Further, the initial pitch diameter in diffusion district is D1 in the described exhaust diffusion passage, and the terminal node circular diameter is D4, and described diffusion blade forward position pitch diameter is D2, and described diffusion blade tail is D3 along pitch diameter, and it satisfies following relation:
D2/D1＝1.05～1.1，D3/D1＝1.25～1.35，D4/D1＝1.4～1.5。
The utility model slows down high velocity air by in exhaust diffusion passage the diffusion blade being set, and makes kinetic energy effectively be converted into the pressure energy, can prevent effectively that air-flow from excessively rotating so that reflux, and can improve pneumatic efficiency.
Description of drawings
Fig. 1 is the applied centrifugal gas compression equipment configuration schematic representation of the utility model;
Fig. 2 is the utility model structural representation;
Fig. 3 is the cross section leaf structure schematic representation of diffusion blade;
Fig. 4 is the along the circumferential direction equally distributed structural representation of diffusion blade.
Embodiment
As shown in Figure 1, the centrifugal compression intermediate casing of the utility model band diffusion blade is the important component part in the centrifugal compression device.This centrifugal compression device comprises main shaft 1, and inlet casing 2 and exit casing 3 are provided with bearing support 4 on inlet casing 2 and the exit casing 3, and the two ends of main shaft 1 are installed in the corresponding bearing support by bearing 5.
The string installing is equipped with some grades of compression units 6 on the middle part of main shaft 1, and each grade compression unit comprises fluid director 7, impeller 8, intermediate casing body 9, and inlet casing 2, exit casing 3 and several intermediate casing entire combination form casing structure.Be provided with runner in the intermediate casing body 9, the runner after each intermediate casing 9 entire combination, in it splices the gas circuit structure that constitutes in the casing structure mutually.
To shown in Figure 4, the intermediate casing body 9 shown in Fig. 2 is the structural representation after intermediate casing body 9 is simplified among Fig. 1 as Fig. 2, and both all can be used for explaining technical conceive of the present utility model.
The centrifugal compression intermediate casing of the utility model band diffusion blade, the some grades of intermediate casing bodies 9 that the string installing is put, be provided with gas-entered passageway 10 and exhaust diffusion passage 11 in each grade intermediate casing body 9, wherein, be provided with several diffusion blades 12 at exhaust diffusion passage 11 internal fixation, these diffusion blades 12 along the circumferential direction are evenly distributed on the intermediate casing body 9.
In the present embodiment, diffusion blade 12 forms with intermediate casing body 9 integrally castings, in the practical application, the effective Placement that can take any other all can, the quantity of diffusion blade 12 is 8～14.
The centrifugal compression intermediate casing of the utility model is the three dimensional analysis calculation optimization design through computational fluid mechanics (CFD), and this intermediate casing is except the shell that serves as the multistage centrifugal compression device, and its inner flow passage is the important component part of compression unit.
By some grades of intermediate casing bodies 9 are set, and some grades of intermediate casing bodies 9 can go here and there dress easily, form the outside enclosing housing of multistage compression equipment in the utility model.The runner that its inner combination back forms carries out radial and axial flow divert with gas, exhaust diffusion passage 11 is the inner annular channel that the sidewall of adjacent two-stage intermediate casing body constitutes, be the Diffuser structure, high velocity air will slow down after via exhaust diffusion passage 11, make kinetic energy effectively be converted into the pressure energy.
The general vaneless diffuser that adopts in conventional design.Vaneless radial diffuser has broad operating range, and simpler on making, and therefore mostly traditional centrifugal compression device is to adopt vaneless Diffuser; Because of air-flow is obstructed in grain direction, make its velocity attitude deflection bigger, flow path is longer, and frictional loss is big, and its pneumatic efficiency is not best.The Diffuser that adds blade can prevent that air-flow from excessively rotating so that reflux, and can improve pneumatic efficiency.
The centrifugal compression intermediate casing of the utility model band diffusion blade by diffusion blade 12 is set, not only simplifies the structure, has reduced equipment volume, also effectively raises pneumatic efficiency.Diffusion blade 12 belongs to two-dimentional blade, and wherein, the initial pitch diameter in diffusion district is D1 in the exhaust diffusion passage, and the terminal node circular diameter is D4, and described diffusion blade forward position pitch diameter is D2, and described diffusion blade tail is D3 along pitch diameter, and it satisfies following relation:
D2/D1＝1.05～1.1，D3/D1＝1.25～1.35，D4/D1＝1.4～1.5。
The cross section blade profile of diffusion blade 12 determines that by following table wherein the round dot of x, y coordinate is on the center line of rotary main shaft, and D2 is the pitch diameter in blade forward position.Blade adopts little denseness design along circumferentially uniform, has both prevented the air-flow revolution, improves pneumatic efficiency again.
| The point position | Y coordinate y/D2 | Abscissa x/D2 | The point position | Y coordinate y/D2 | Abscissa x/D2 | The point position | Y coordinate y/D2 | Abscissa x/D2 |
| 1 | 0.5000 | 0.0025 | 11 | 0.5483 | -0.1507 | 21 | 0.5366 | -0.1577 |
| 2 | 0.5022 | 0.0011 | 12 | 0.5499 | -0.1688 | 22 | 0.5332 | -0.1419 |
| 3 | 0.5051 | -0.0063 | 13 | 0.5517 | -0.1871 | 23 | 0.5293 | -0.1240 |
| 4 | 0.5115 | -0.0192 | 14 | 0.5524 | -0.2033 | 24 | 0.5257 | -0.1083 |
| 5 | 0.5204 | -0.0404 | 15 | 0.5522 | -0.2132 | 25 | 0.5215 | -0.0908 |
| 6 | 0.5286 | -0.0639 | 16 | 0.5498 | -0.2156 | 26 | 0.5158 | -0.0675 |
| 7 | 0.5355 | -0.0870 | 17 | 0.5474 | -0.2136 | 27 | 0.5094 | -0.0431 |
| 8 | 0.5407 | -0.1075 | 18 | 0.5456 | -0.2034 | 28 | 0.5031 | -0.0200 |
| 9 | 0.5433 | -0.1202 | 19 | 0.5432 | -0.1914 | 29 | 0.4998 | -0.0080 |
| 10 | 0.5471 | -0.1413 | 20 | 0.5397 | -0.1732 | 30 | 0.4976 | -0.0007 |
| 31 | 0.5000 | 0.0025 |
Claims (7)
1. be with the centrifugal compression intermediate casing of diffusion blade, it is characterized in that, this intermediate casing comprises the some grades of intermediate casing bodies that the string installing is put, be provided with gas-entered passageway and exhaust diffusion passage in each grade intermediate casing body, wherein be provided with several diffusion blades at exhaust diffusion passage internal fixation, these diffusion blades along the circumferential direction are evenly distributed on the intermediate casing body.
2. the centrifugal compression intermediate casing of band diffusion blade as claimed in claim 1 is characterized in that, the inner annular channel that the sidewall that described exhaust diffusion passage is adjacent two-stage intermediate casing body constitutes.
3. the centrifugal compression intermediate casing of band diffusion blade as claimed in claim 2 is characterized in that, described diffusion blade and described intermediate casing body integrally casting form.
4. the centrifugal compression intermediate casing of band diffusion blade as claimed in claim 3 is characterized in that the quantity of described diffusion blade is 8～14.
5. the centrifugal compression intermediate casing of band diffusion blade as claimed in claim 4 is characterized in that described diffusion blade is two-dimentional blade structure.
6. the centrifugal compression intermediate casing of band diffusion blade as claimed in claim 5 is characterized in that, the cross section blade profile parameters of described diffusion blade is:
Wherein the round dot of x, y coordinate is on the center line of rotary main shaft, and D2 is the pitch diameter in described diffusion blade forward position.
7. the centrifugal compression intermediate casing of band diffusion blade as claimed in claim 6, it is characterized in that, the initial pitch diameter in diffusion district is D1 in the described exhaust diffusion passage, the terminal node circular diameter is D4, described diffusion blade forward position pitch diameter is D2, described diffusion blade tail is D3 along pitch diameter, and it satisfies following relation:
D2/D1＝1.05～1.1，D3/D1＝1.25～1.35，D4/D1＝1.4～1.5。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200890522U CN202001377U (en) | 2011-03-30 | 2011-03-30 | Centrifugal compressed intermediate casing with diffusing blades |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200890522U CN202001377U (en) | 2011-03-30 | 2011-03-30 | Centrifugal compressed intermediate casing with diffusing blades |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202001377U true CN202001377U (en) | 2011-10-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200890522U Expired - Fee Related CN202001377U (en) | 2011-03-30 | 2011-03-30 | Centrifugal compressed intermediate casing with diffusing blades |
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| CN (1) | CN202001377U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102400960A (en) * | 2011-12-20 | 2012-04-04 | 中国船舶重工集团公司第七�三研究所 | Centrifugal oxygen-enriched air compressor and application thereof |
| CN106593899A (en) * | 2017-01-04 | 2017-04-26 | 江苏亚太工业泵科技发展有限公司 | VPSA large-capacity centrifugal vacuum pump |
| CN110319058A (en) * | 2019-08-20 | 2019-10-11 | 西安陕鼓动力股份有限公司 | Compressor welding casing and compressor |
-
2011
- 2011-03-30 CN CN2011200890522U patent/CN202001377U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102400960A (en) * | 2011-12-20 | 2012-04-04 | 中国船舶重工集团公司第七�三研究所 | Centrifugal oxygen-enriched air compressor and application thereof |
| CN106593899A (en) * | 2017-01-04 | 2017-04-26 | 江苏亚太工业泵科技发展有限公司 | VPSA large-capacity centrifugal vacuum pump |
| CN110319058A (en) * | 2019-08-20 | 2019-10-11 | 西安陕鼓动力股份有限公司 | Compressor welding casing and compressor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20111005 Termination date: 20180330 |