CN218912971U - Expansion end variable cross-section nozzle of high-speed centrifugal air compressor - Google Patents
Expansion end variable cross-section nozzle of high-speed centrifugal air compressor Download PDFInfo
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- CN218912971U CN218912971U CN202222599209.7U CN202222599209U CN218912971U CN 218912971 U CN218912971 U CN 218912971U CN 202222599209 U CN202222599209 U CN 202222599209U CN 218912971 U CN218912971 U CN 218912971U
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Abstract
The utility model provides a but high-speed centrifugal air compressor expansion end variable cross-section nozzle, includes the fixed disk, and the rear side of fixed disk evenly is equipped with a plurality of rotary vane and a plurality of fixed blade along the circumference, fixed blade passes through the holder and is connected with the fixed disk, rotary vane passes through the blade pole and installs on the fixed disk, and the blade pole activity wears out the fixed disk and stretches to the fixed disk front side and link firmly with the plectrum, the fixed disk outside is equipped with the rotary disk, and the rotary disk passes through the plectrum seat and is connected with the plectrum. The rotary disk drives the blade rod and the rotary blade to rotate through the poking piece when rotating so as to adjust the gap between the rotary blade and the fixed blade, thereby adjusting the air inflow, and the gap between the rotary blade and the fixed blade can be adjusted in real time according to the high-temperature gas flow discharged by the fuel cell stack, so that the air inflow of the expansion end is matched with the air displacement of the fuel cell stack, the waste of gas energy is avoided, the expansion end is always in the optimal working state, and the integral performance of the high-speed centrifugal air compressor is improved.
Description
Technical field:
the utility model relates to a variable cross-section nozzle at an expansion end of a high-speed centrifugal air compressor.
The background technology is as follows:
at present, the development of new energy fuel cell automobiles is considered as an important link of traffic energy power transformation, and in order to ensure the normal operation of fuel cell engines, the engines generally need auxiliary systems such as a hydrogen supply subsystem, an air supply subsystem, a circulating water cooling management subsystem and the like, and a great deal of researches show that the supply of high-pressure and large-flow air has obvious effect on improving the power output of the existing fuel cell engines. Therefore, a centrifugal air compressor is an energy conversion device for achieving the aim, which is one of important parts of an air supply system of a fuel cell engine, for boosting intake air before the intake air enters the engine.
The applicant applies for patent application with publication number of CN114893419A, namely a fuel cell single-stage high-speed centrifugal air compressor and expander integrated system, in 2022, 5 and 23, and discloses a structural form in which an air compressor and an expander are integrated, high-temperature gas discharged by a fuel cell stack enters the expander to push an expansion impeller to rotate, and the expansion impeller is used for recovering gas energy discharged by the fuel cell stack and providing assistance for a rotor. In specific work, the applicant finds that the flow rate of high-temperature gas discharged from the fuel cell stack is unstable, the flow rate is large and small, the current air inlet channel of the expansion end is fixed, the flow rate of gas in unit time is fixed, and when the flow rate of gas is too large, the expansion end is not recovered timely, so that the waste of gas energy can be caused; when the gas flow is too small, the gas pressure is insufficient, the rotation speed of the expansion impeller can be reduced, the power provided for the rotor can be reduced, and no good method is provided at present for ensuring that the expansion end is always in the optimal working state.
In summary, the problem of air inflow at the expansion end of a high-speed centrifugal air compressor has become a technical problem to be solved in the industry.
The utility model comprises the following steps:
the utility model provides a variable cross-section nozzle at an expansion end of a high-speed centrifugal air compressor to make up for the defects of the prior art, and solves the problems that an air inlet channel of the expansion end is fixed and the air flow is fixed in unit time in the past.
The technical scheme adopted by the utility model for solving the technical problems is as follows:
the utility model provides a but high-speed centrifugal air compressor expansion end cross-section nozzle, includes the fixed disk, the rear side of fixed disk evenly is equipped with a plurality of rotary vane and a plurality of fixed blade along the circumference, fixed blade passes through the holder and is connected with the fixed disk, rotary vane passes through the blade pole and installs on the fixed disk, and the blade pole activity wears out the fixed disk and stretches to the fixed disk front side and link firmly with the plectrum, the fixed disk outside is equipped with the rotary disk, and the rotary disk passes through the plectrum seat and is connected with the plectrum.
The fixed blades are arranged on the outer sides of the rotating blades, the number of the fixed blades is the same as that of the rotating blades, and each fixed blade is arranged corresponding to the position of each rotating blade.
The retainer comprises two retaining rings which are arranged at intervals, and the fixed blades are uniformly and obliquely arranged between the two retaining rings along the circumference.
The front side of the rotary disk is provided with a driving column, the driving column is connected with a driving piece arranged on the fixed disk, and the driving piece is used for driving the rotary disk to rotate.
The inner side of the rotating disk is provided with a limiting groove, and a limiting column is arranged on the fixed disk at a position corresponding to the limiting groove.
The fixed disk is provided with an arc clamping groove at the position corresponding to the limit column.
The rotary disk is rotatably arranged on the outer side of the fixed disk, and a limiting boss and a limiting baffle ring are respectively arranged on the fixed disk corresponding to the front side and the rear side of the rotary disk.
The number of the limiting grooves on the rotating disc is the same as the number of the limiting bosses on the fixed disc, and the size of the limiting grooves is larger than that of the limiting bosses.
The front side of the fixed disk is provided with a positioning hole.
And a blade retainer ring is arranged at the rear side of the retainer.
The utility model adopts the scheme and has the following advantages:
the utility model is arranged in the expansion end of the high-speed centrifugal air compressor, and can adjust the gap between the rotating blades and the fixed blades in real time according to the flow of high-temperature gas discharged by the fuel cell stack, so that the air inflow of the expansion end is matched with the exhaust capacity of the fuel cell stack, the waste of gas energy is avoided, the expansion end is ensured to be always in an optimal working state, and the integral performance of the high-speed centrifugal air compressor is improved.
Description of the drawings:
fig. 1 is a schematic front perspective view of the present utility model.
Fig. 2 is a schematic cross-sectional view of the present utility model.
Fig. 3 is a schematic rear perspective view of the utility model with the blade retainer removed.
Fig. 4 is a schematic perspective view of the cage of the present utility model.
Fig. 5 is a schematic front perspective view of the rotary disk of the present utility model.
Fig. 6 is a schematic front perspective view of the fixing plate of the present utility model.
Fig. 7 is a rear perspective view schematically showing a fixing plate of the present utility model.
Fig. 8 is a schematic perspective view of a rotary blade according to the present utility model.
In the figure, 1, fixed disk, 2, rotating vane, 3, fixed vane, 4, holder, 5, vane lever, 6, plectrum, 7, rotary disk, 8, plectrum seat, 9, drive post, 10, drive piece, 11, spacing groove, 12, spacing post, 13, arc draw-in groove, 14, spacing boss, 15, spacing baffle ring, 16, locating hole, 17, vane retaining ring.
The specific embodiment is as follows:
in order to clearly illustrate the technical features of the present solution, the present utility model will be described in detail below with reference to the following detailed description and the accompanying drawings.
As shown in fig. 1-8, a variable cross-section nozzle at the expansion end of a high-speed centrifugal air compressor comprises a fixed disk 1, wherein a plurality of rotary blades 2 and a plurality of fixed blades 3 are uniformly arranged at the rear side of the fixed disk 1 along the circumference, the fixed blades 3 are connected with the fixed disk 1 through a retainer 4, the rotary blades 2 are arranged on the fixed disk 1 through blade rods 5, the blade rods 5 movably penetrate through the fixed disk 1 to extend to the front side of the fixed disk 1 and fixedly connect with a poking piece 6, a rotary disk 7 is arranged at the outer side of the fixed disk 1, the rotary disk 7 is connected with the poking piece 6 through a poking piece seat 8, and the poking piece seat 8 is in a groove shape spliced with the poking piece 6.
The fixed blades 3 are arranged on the outer sides of the rotating blades 2, the number of the fixed blades 3 is the same as that of the rotating blades 2, each fixed blade 3 is arranged corresponding to the position of each rotating blade 2, gaps are formed between each group of fixed blades 3 and the rotating blades 2, and the size of the gaps can be adjusted when the rotating blades 2 rotate.
The retainer 4 comprises two retaining rings which are arranged at intervals, the fixed blades 3 are uniformly and obliquely arranged between the two retaining rings along the circumference, and the retainer 4 is connected with the fixed disc 1 through interference press fit or welding.
The front side of the rotary disk 7 is provided with a driving column 9, the driving column 9 is connected with a driving piece 10 arranged on the fixed disk 1, the driving piece 10 is connected with an external driving mechanism, and the rotary disk 7 is driven to rotate through the driving column 9 when the driving piece 10 rotates.
The inner side of the rotary disk 7 is provided with a limit groove 11, a limit column 12 is arranged on the fixed disk 1 corresponding to the limit groove 11, and the limit column 12 is matched with the limit groove 11 to control the limit rotation angle range of the rotary disk 7.
The fixed disk 1 is provided with an arc clamping groove 13 at a position corresponding to the limiting column 12, and the limiting column 12 is clamped in the arc clamping groove 13 for fixing.
The rotary disk 7 is rotatably arranged on the outer side of the fixed disk 1, a limiting boss 14 and a limiting baffle ring 15 are respectively arranged on the fixed disk 1 corresponding to the front side and the rear side of the rotary disk 7, the rotary disk 7 is limited between the limiting boss 14 and the limiting baffle ring 15, and a rotary guiding effect is achieved on the rotary disk 7.
The number of the limit grooves 11 on the rotary disk 7 is the same as the number of the limit bosses 14 on the fixed disk 1, and the size of the limit grooves 11 is larger than that of the limit bosses 14. When the rotary disk 7 is installed, the limiting groove 11 is aligned with the limiting boss 14 to push the rotary disk 7 into the outer side of the fixed disk 1, then the rotary disk 7 is rotated for a certain angle, so that the positions of the limiting groove 11 and the limiting boss 14 are staggered, at the moment, the rotary disk 7 can be limited between the limiting boss 14 and the limiting baffle ring 15, and the installation of the rotary disk 7 is facilitated. Then the limiting post 12 is inserted, and the plectrum 6 is inserted into the plectrum seat 8.
The front side of the fixed disk 1 is provided with a positioning hole 16 for installing the fixed disk 1.
The rear side of the retainer 4 is provided with a blade retainer ring 17, which plays a role in protecting the rotary blade 2, and the blade retainer ring 17 is in interference press fit or welding connection with the retainer 4.
Working principle:
the driving piece 10 is driven to rotate through an external driving mechanism, the driving piece 10 drives the rotary disk 7 to rotate through the driving post 9, the rotary disk 7 drives the poking piece 6 to rotate through the poking piece seat 8, the poking piece 6 drives the blade rod 5 and the rotary blade 2 to rotate so as to adjust the gap between the rotary blade 2 and the fixed blade 3, and the rotary blade 2 and the fixed blade 3 are mutually matched to realize the function of adjusting the air inflow.
The above embodiments are not to be taken as limiting the scope of the utility model, and any alternatives or modifications to the embodiments of the utility model will be apparent to those skilled in the art and fall within the scope of the utility model.
The present utility model is not described in detail in the present application, and is well known to those skilled in the art.
Claims (10)
1. The utility model provides a but high-speed centrifugal air compressor machine expansion end variable cross section nozzle which characterized in that: including the fixed disk, the rear side of fixed disk evenly is equipped with a plurality of rotary vane and a plurality of fixed blade along the circumference, fixed blade passes through the holder and is connected with the fixed disk, rotary vane passes through the blade pole and installs on the fixed disk, and the blade pole activity wears out the fixed disk and stretches to the fixed disk front side and link firmly with the plectrum, the fixed disk outside is equipped with the rotary disk, and the rotary disk passes through the plectrum seat and is connected with the plectrum.
2. The variable cross-section nozzle at the expansion end of a high-speed centrifugal air compressor according to claim 1, wherein: the fixed blades are arranged on the outer sides of the rotating blades, the number of the fixed blades is the same as that of the rotating blades, and each fixed blade is arranged corresponding to the position of each rotating blade.
3. The variable cross-section nozzle at the expansion end of a high-speed centrifugal air compressor according to claim 1, wherein: the retainer comprises two retaining rings which are arranged at intervals, and the fixed blades are uniformly and obliquely arranged between the two retaining rings along the circumference.
4. The variable cross-section nozzle at the expansion end of a high-speed centrifugal air compressor according to claim 1, wherein: the front side of the rotary disk is provided with a driving column, the driving column is connected with a driving piece arranged on the fixed disk, and the driving piece is used for driving the rotary disk to rotate.
5. The variable cross-section nozzle at the expansion end of a high-speed centrifugal air compressor according to claim 1, wherein: the inner side of the rotating disk is provided with a limiting groove, and a limiting column is arranged on the fixed disk at a position corresponding to the limiting groove.
6. The variable cross-section nozzle at the expansion end of the high-speed centrifugal air compressor according to claim 5, wherein: the fixed disk is provided with an arc clamping groove at the position corresponding to the limit column.
7. The variable cross-section nozzle at the expansion end of the high-speed centrifugal air compressor according to claim 5, wherein: the rotary disk is rotatably arranged on the outer side of the fixed disk, and a limiting boss and a limiting baffle ring are respectively arranged on the fixed disk corresponding to the front side and the rear side of the rotary disk.
8. The variable cross-section nozzle at the expansion end of a high-speed centrifugal air compressor according to claim 7, wherein: the number of the limiting grooves on the rotating disc is the same as the number of the limiting bosses on the fixed disc, and the size of the limiting grooves is larger than that of the limiting bosses.
9. The variable cross-section nozzle at the expansion end of a high-speed centrifugal air compressor according to claim 1, wherein: the front side of the fixed disk is provided with a positioning hole.
10. The variable cross-section nozzle at the expansion end of a high-speed centrifugal air compressor according to claim 1, wherein: and a blade retainer ring is arranged at the rear side of the retainer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222599209.7U CN218912971U (en) | 2022-09-29 | 2022-09-29 | Expansion end variable cross-section nozzle of high-speed centrifugal air compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222599209.7U CN218912971U (en) | 2022-09-29 | 2022-09-29 | Expansion end variable cross-section nozzle of high-speed centrifugal air compressor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218912971U true CN218912971U (en) | 2023-04-25 |
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ID=86015832
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222599209.7U Active CN218912971U (en) | 2022-09-29 | 2022-09-29 | Expansion end variable cross-section nozzle of high-speed centrifugal air compressor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218912971U (en) |
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2022
- 2022-09-29 CN CN202222599209.7U patent/CN218912971U/en active Active
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