CN110566514A - Noise reduction blade structure of centrifugal compressor - Google Patents
Noise reduction blade structure of centrifugal compressor Download PDFInfo
- Publication number
- CN110566514A CN110566514A CN201911020945.9A CN201911020945A CN110566514A CN 110566514 A CN110566514 A CN 110566514A CN 201911020945 A CN201911020945 A CN 201911020945A CN 110566514 A CN110566514 A CN 110566514A
- Authority
- CN
- China
- Prior art keywords
- blade
- cam
- connecting rod
- centrifugal compressor
- noise reduction
- 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
- 230000009467 reduction Effects 0.000 title claims description 11
- 230000008878 coupling Effects 0.000 claims abstract description 4
- 238000010168 coupling process Methods 0.000 claims abstract description 4
- 238000005859 coupling reaction Methods 0.000 claims abstract description 4
- 230000000670 limiting effect Effects 0.000 claims description 6
- 230000033001 locomotion Effects 0.000 claims description 5
- 230000000694 effects Effects 0.000 description 3
- 230000003068 static effect Effects 0.000 description 3
- 238000005273 aeration Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000010349 pulsation Effects 0.000 description 2
- 230000002829 reductive effect Effects 0.000 description 2
- 239000010865 sewage Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006477 desulfuration reaction Methods 0.000 description 1
- 230000023556 desulfurization Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
Classifications
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- 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
- F04D27/002—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids by varying geometry within the pumps, e.g. by adjusting vanes
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- 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
- F04D29/44—Fluid-guiding means, e.g. diffusers
- F04D29/46—Fluid-guiding means, e.g. diffusers adjustable
- F04D29/462—Fluid-guiding means, e.g. diffusers adjustable 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
- F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
- F04D29/661—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps
- F04D29/663—Sound attenuation
-
- 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
- F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
- F04D29/661—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps
- F04D29/667—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps by influencing the flow pattern, e.g. suppression of turbulence
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- F05D2240/00—Components
- F05D2240/10—Stators
- F05D2240/12—Fluid guiding means, e.g. vanes
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Geometry (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The utility model relates to a centrifugal compressor blade technical field, specifically a centrifugal compressor falls blade structure of making an uproar, including a plurality of blades, the executor, the connecting rod, first cam, the drive ring, second cam and rim plate, a plurality of blades rotate to be connected on the rim plate, and a plurality of blade circumference distributes, a plurality of first cams respectively with every blade coaxial coupling, the eccentric position of a plurality of first cams rotates to be connected on the drive ring, the drive ring edge is equipped with the lug, the second cam rotates to be connected on the lug, the eccentric position and the connecting rod one end fixed connection of second cam, the other end of connecting rod is with the output fixed connection of executor, a plurality of blade front ends are equipped with the inclined plane, the blade is located between rim plate and the wheel cap, one side of blade. This scheme has solved the problem that current blade caused high frequency aerodynamic noise easily.
Description
Technical Field
The invention relates to the technical field of centrifugal compressor blades, in particular to a noise reduction blade structure of a centrifugal compressor.
Background
The single-stage centrifugal blower is widely applied to the fields of sewage treatment aeration, power plant desulfurization and denitrification, oxidation processes and the like due to the advantages of high efficiency, energy conservation and the like. The single-stage centrifugal blower mainly comprises an impeller, a diffuser, a volute and the like, as shown in figure 1; in order to improve the efficiency of a single-stage centrifugal blower applied to the field of sewage treatment and aeration, guide vane blades are often arranged in a diffuser, and the strong dynamic and static interference effect is formed between the impeller and the outlet blades of the diffuser when the impeller rotates at a high speed in the type of unit, so that the prominent high-frequency aerodynamic noise is caused.
Disclosure of Invention
The invention aims to provide a noise reduction blade structure of a centrifugal compressor, which aims to solve the problem that the conventional blade is easy to cause high-frequency aerodynamic noise.
In order to achieve the above object, the basic scheme of the invention is as follows: centrifugal compressor falls blade structure of making an uproar, including a plurality of blades, executor, connecting rod, first cam, drive ring, second cam, rim plate and wheel cover, it is a plurality of the blade rotates to be connected on the rim plate, and a plurality of blade circumference distributes, and is a plurality of first cam rotates respectively with every blade coaxial coupling, and is a plurality of the eccentric position of first cam rotates to be connected on the drive ring, the drive ring edge is equipped with the lug, the second cam rotates to be connected on the lug, the eccentric position and the connecting rod one end fixed connection of second cam, the other end of connecting rod is with the output fixed connection of executor, and is a plurality of the blade front end is equipped with the inclined plane, the blade is located between rim plate and the wheel cover, one side of blade leaves the clearance.
The beneficial effects of the basic scheme are as follows: (1) in the scheme, the actuator drives the connecting rod to act, the connecting rod enables the driving ring to move through the second cam, and the driving ring acts to drive the second cam to act, so that the diffuser blades are driven to rotate to achieve the flow regulation function.
(2) the front end of the blade in the scheme is provided with the inclined plane, so that the front edge of the blade is far away from the impeller, the blade is provided with a half of free space, the dynamic and static interference influence of the impeller and the blade is restrained to a certain degree, the pressure pulsation on the impeller and the blade is reduced, and the blade has a certain noise reduction function.
(3) In the scheme, a gap is reserved on one side of the blade, so that half of free space is left between the wheel disc and the wheel cover to adjust the air flow, the air flow loss is minimum, certain inhibiting effect can be obtained on the dynamic and static interference influence of the impeller and the outlet diffuser blade again, the pressure pulsation on the impeller and the diffuser blade is reduced, and the certain noise reduction function is achieved.
Further, still include the connecting rod cover, the connecting rod cover is fixed between connecting rod and second cam. The connecting rod sleeve is convenient for the connecting rod and the second cam to be fixed.
Furthermore, the intersection of the inclined plane of the blade and the upper end surface is designed to be a fillet. The fillet design is more favorable to stablizing the air current to avoid producing the aerodynamic noise of high frequency.
Further, the device also comprises a limiting block, wherein the limiting block is fixed on the wheel disc and can limit the motion of the driving ring. The motion of stopper to the rim plate is spacing, avoids the rim plate transitional movement to lead to the blade rotation angle too big.
Further, the gap width on one side of the blade is equal to the thickness of the blade. Under the condition of ensuring the normal work of the blade, a good adjusting effect can be obtained, and the noise reduction performance is ensured.
Drawings
FIG. 1 is a top view of an embodiment of the present invention;
FIG. 2 is a bottom view of an embodiment of the present invention;
FIG. 3 is a schematic view of a blade according to an embodiment of the present invention;
FIG. 4 is a schematic illustration of the position of the blades, disk and shroud in an embodiment of the invention.
Detailed Description
The following is further detailed by way of specific embodiments:
reference numerals in the drawings of the specification include: the device comprises a blade 1, an actuator 2, a connecting rod 3, a first cam 4, a connecting rod sleeve 5, a driving ring 6, a second cam 7, a wheel disc 8, a limiting block 9, a bump 10, an inclined plane 11 and a wheel cover 12.
Examples
substantially as shown in the attached figures 1 and 2: centrifugal compressor falls 1 structure of blade of making an uproar, including nine blades 1, executor 2, connecting rod 3, first cam 4, connecting rod cover 5, drive ring 6, second cam 7, rim plate 8, wheel cap 12 and stopper 9, nine blades 1 rotate to be connected on rim plate 8, and 1 circumference of nine blades distributes, nine first cam 4 respectively with every blade 1 coaxial coupling, nine first cam 4's eccentric position rotates to be connected on drive ring 6, drive ring 6 edge is equipped with lug 10, second cam 7 rotates to be connected on lug 10, second cam 7's eccentric position and connecting rod 3 one end fixed connection, connecting rod cover 5 is fixed between connecting rod 3 and second cam 7. The other end of the connecting rod 3 is fixedly connected with the output end of the actuator 2, the limiting block 9 is fixed on the wheel disc 8, and the limiting block 9 can limit the motion of the driving ring 6. Referring to fig. 3, the front end of the blade 1 is provided with an inclined surface 11, and the intersection of the inclined surface 11 and the upper end surface of the blade 1 is designed to be a round angle. Referring to fig. 4, the blade 1 is located between the wheel disc 8 and the wheel cover 12, and a side of the blade 1 close to the wheel cover 12 is left with a gap (or a side close to the wheel disc 8 is left with a gap, and in this embodiment, a side close to the wheel cover 12 is preferably selected).
The specific implementation process is as follows: the actuator 2 drives the connecting rod 3 to move, the connecting rod 3 drives the driving ring 6 to move through the second cam 7, and the driving ring 6 drives the second cam 7 to move, so that the diffuser blades 1 are driven to rotate to achieve the function of regulating the flow.
The foregoing is merely an example of the present invention and common general knowledge in the art of specific structures and/or features of the invention has not been set forth herein in any way. It should be noted that, for those skilled in the art, without departing from the structure of the present invention, several changes and modifications can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicability of the patent. The scope of the claims of the present application shall be determined by the contents of the claims, and the description of the embodiments and the like in the specification shall be used to explain the contents of the claims.
Claims (5)
1. Centrifugal compressor falls blade structure of making an uproar, its characterized in that: including a plurality of blades, executor, connecting rod, first cam, drive ring, second cam, rim plate and wheel lid, it is a plurality of the blade rotates to be connected on the rim plate, and a plurality of blade circumference distributes, and is a plurality of first cam rotates respectively with every blade coaxial coupling, and is a plurality of the eccentric position of first cam rotates and connects on the drive ring, the drive ring edge is equipped with the lug, the second cam rotates and connects on the lug, the eccentric position and the connecting rod one end fixed connection of second cam, the other end of connecting rod is with the output fixed connection of executor, and is a plurality of the blade front end is equipped with the inclined plane, the blade is located between rim plate and the wheel lid, one side of blade leaves the clearance.
2. The centrifugal compressor noise reduction blade structure of claim 1, wherein: the connecting rod sleeve is fixed between the connecting rod and the second cam.
3. the centrifugal compressor noise reduction blade structure of claim 2, wherein: the intersection of the inclined plane of the blade and the upper end surface is designed to be a fillet.
4. The centrifugal compressor noise reduction blade structure of claim 3, wherein: the limiting block is fixed on the wheel disc and can limit the motion of the driving ring.
5. The centrifugal compressor noise reduction blade structure of claim 1, wherein: the width of the gap on one side of the blade is equal to the thickness of the blade.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911020945.9A CN110566514A (en) | 2019-10-25 | 2019-10-25 | Noise reduction blade structure of centrifugal compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911020945.9A CN110566514A (en) | 2019-10-25 | 2019-10-25 | Noise reduction blade structure of centrifugal compressor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110566514A true CN110566514A (en) | 2019-12-13 |
Family
ID=68785863
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911020945.9A Pending CN110566514A (en) | 2019-10-25 | 2019-10-25 | Noise reduction blade structure of centrifugal compressor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110566514A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101109394A (en) * | 2007-08-14 | 2008-01-23 | 西安交通大学 | Centrifugal type enclosed type impeller with gap between impeller vane and trochal disk/trochal cover |
| JP2012026443A (en) * | 2010-07-26 | 2012-02-09 | Hamilton Sundstrand Corp | Variable diffuser for rotating machine and rotating machine |
| CN106286406A (en) * | 2016-10-25 | 2017-01-04 | 珠海格力电器股份有限公司 | Rotating machinery structure and vane diffuser thereof |
| CN206636828U (en) * | 2017-02-23 | 2017-11-14 | 苏州工业园区星德胜电机有限公司 | A kind of small size mixed-flow impeller |
| CN208364486U (en) * | 2018-06-14 | 2019-01-11 | 安徽虎渡科达流体机械有限公司 | A kind of high-speed centrifugal blower inlet guide vane and diffuser vane joint debugging mechanism |
| CN208870843U (en) * | 2018-10-12 | 2019-05-17 | 重庆通用工业(集团)有限责任公司 | A kind of impeller and air blower |
| CN211039161U (en) * | 2019-10-25 | 2020-07-17 | 重庆通用工业(集团)有限责任公司 | Noise reduction blade structure of centrifugal compressor |
-
2019
- 2019-10-25 CN CN201911020945.9A patent/CN110566514A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101109394A (en) * | 2007-08-14 | 2008-01-23 | 西安交通大学 | Centrifugal type enclosed type impeller with gap between impeller vane and trochal disk/trochal cover |
| JP2012026443A (en) * | 2010-07-26 | 2012-02-09 | Hamilton Sundstrand Corp | Variable diffuser for rotating machine and rotating machine |
| CN106286406A (en) * | 2016-10-25 | 2017-01-04 | 珠海格力电器股份有限公司 | Rotating machinery structure and vane diffuser thereof |
| CN206636828U (en) * | 2017-02-23 | 2017-11-14 | 苏州工业园区星德胜电机有限公司 | A kind of small size mixed-flow impeller |
| CN208364486U (en) * | 2018-06-14 | 2019-01-11 | 安徽虎渡科达流体机械有限公司 | A kind of high-speed centrifugal blower inlet guide vane and diffuser vane joint debugging mechanism |
| CN208870843U (en) * | 2018-10-12 | 2019-05-17 | 重庆通用工业(集团)有限责任公司 | A kind of impeller and air blower |
| CN211039161U (en) * | 2019-10-25 | 2020-07-17 | 重庆通用工业(集团)有限责任公司 | Noise reduction blade structure of centrifugal compressor |
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