Impeller and centrifugal compressor

Abstract

The utility model discloses an impeller and a centrifugal compressor. The impeller comprises a wheel disc and a plurality of blades, the wheel disc comprises a central cylinder and a base plate, the blades are arranged at intervals, the inner side faces of the blades are attached to the peripheral face of the central cylinder, and the bottom faces of the blades are attached to the base plate; grinding materials with the particle size ranging from 1 micrometer to 10 micrometers are used for conducting rough polishing on the impeller so as to remove protrusions or uneven parts on the impeller; fine polishing is conducted on the impeller through an abrasive with the particle size ranging from 0.5 micrometer to 1 micrometer; and finally, the impeller is subjected to ultra-precision polishing through an abrasive with the particle size ranging from 0.05 micrometer to 0.1 micrometer. The impeller is subjected to rough polishing, fine polishing and ultra-fine polishing, so that the surface quality of the impeller can be effectively improved, damage such as microcracks and scratches on the surface of the impeller can be avoided, the efficiency of fluid passing can be improved, pure and stable system operation is guaranteed, the service life of equipment can be prolonged, the overall operation efficiency can be improved, and stability and reliability can be improved.

Description

Technical Field

[0001] This utility model relates to the field of compressors, and in particular to an impeller and a centrifugal compressor. Background Technology

[0002] A centrifugal compressor is a driven fluid machine that raises low-pressure gas to high-pressure gas. Centrifugal compressors are widely used in industries such as air conditioning, heat pumps, and ice storage.

[0003] As one of the most crucial moving parts in a centrifugal compressor, the impeller performs work on the gas, thereby compressing it. The quality of the impeller design plays a decisive role in the performance of the centrifugal compressor.

[0004] Currently, the impeller requires a long polishing time during manufacturing to achieve the desired effect, which affects production efficiency. Utility Model Content

[0005] The technical problem to be solved by this utility model is to overcome the above-mentioned defects in the prior art where the impeller requires a long polishing time during the manufacturing process to achieve the expected effect, and to provide an impeller and a centrifugal compressor.

[0006] The present invention solves the above-mentioned technical problems through the following technical solution:

[0007] An impeller includes a disk and multiple blades. The disk includes a central column and a base. The multiple blades are spaced apart, with the inner surface of each blade conforming to the outer circumferential surface of the central column and the bottom surface of each blade conforming to the base. The impeller is coarsely polished using abrasive particles with a particle size range of 1-10 micrometers to remove protrusions or uneven parts. Subsequently, the impeller is finely polished using abrasive particles with a particle size range of 0.5-1 micrometer. Finally, the impeller is ultra-finely polished using abrasive particles with a particle size range of 0.05-0.1 micrometer.

[0008] In this solution, by adopting the above structure, the surface quality of the impeller can be effectively improved by performing coarse polishing, fine polishing and ultra-fine polishing. This can avoid damage such as micro-cracks and scratches on the impeller surface, improve the efficiency of fluid flow, ensure the purity and stability of system operation, extend equipment life and improve overall operating efficiency, and enhance stability and reliability.

[0009] Optionally, when coarse polishing the impeller, a polishing disc is used, the polishing disc including a wool disc;

[0010] Alternatively, when coarsely polishing the impeller, a polishing pad, including a nylon pad, may be used.

[0011] Optionally, the abrasive material may include alumina or diamond.

[0012] Optionally, when fine polishing the impeller, a polishing pad is used, the polishing pad including a polyurethane pad;

[0013] Alternatively, when performing ultra-fine polishing on the impeller, a polishing disc, comprising a cloth, may be used.

[0014] Optionally, when performing ultra-fine polishing on the impeller, a polishing fluid is also used, which includes abrasives and deionized water.

[0015] Optionally, the pressure applied during fine polishing of the impeller is less than the pressure applied during coarse polishing of the impeller;

[0016] And / or, the pressure during ultra-fine polishing of the impeller is less than the pressure during fine polishing of the impeller.

[0017] Optionally, before coarse polishing the impeller, the impeller can be pre-cleaned to remove oil or dust.

[0018] Optionally, after the impeller is ultra-fine polished, it is cleaned and dried to remove residual abrasive and polishing fluid.

[0019] Optionally, after the impeller is ultra-fine polished, the impeller is inspected and evaluated.

[0020] A centrifugal compressor comprising an impeller as described above.

[0021] Based on common knowledge in the field, the above-mentioned preferred conditions can be combined arbitrarily to obtain various preferred embodiments of this utility model.

[0022] The positive and progressive effects of this utility model are as follows:

[0023] This invention can effectively improve the surface quality of the impeller by performing coarse polishing, fine polishing and ultra-fine polishing, which can avoid damage such as micro-cracks and scratches on the impeller surface, improve the efficiency of fluid flow, ensure the purity and stability of system operation, extend equipment life and improve overall operating efficiency, and improve stability and reliability. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the impeller structure of this utility model.

[0025] Figure 2 Figure 1 Process flow diagram of the impeller.

[0026] Explanation of reference numerals in the attached figures:

[0027] Impeller 100

[0028] Roulette 11

[0029] Central column 12

[0030] Chassis 13

[0031] Leaf 14 Detailed Implementation

[0032] The present invention will be described more clearly and completely below by way of embodiments and in conjunction with the accompanying drawings, but the present invention is not limited to the scope of the embodiments.

[0033] like Figures 1-2 As shown, this embodiment includes an impeller 100 and a centrifugal compressor, the centrifugal compressor including the impeller 100 as described above.

[0034] exist Figure 1 In the impeller 100, there are a disk 11 and multiple blades 14. The disk 11 includes a central column 12 and a base 13. The multiple blades 14 are spaced apart. The inner surface of the blades 14 is attached to the outer circumferential surface of the central column 12, and the bottom surface of the blades 14 is attached to the base 13. The impeller 100 is coarsely polished with abrasive particles with a particle size range of 1 micrometer to 10 micrometers to remove protrusions or uneven parts on the impeller 100. Then, the impeller 100 is finely polished with abrasive particles with a particle size range of 0.5 micrometers to 1 micrometer. Finally, the impeller 100 is ultra-finely polished with abrasive particles with a particle size range of 0.05 micrometers to 0.1 micrometers. By performing coarse polishing, fine polishing and ultra-fine polishing on the impeller 100, the surface quality of the impeller 100 can be effectively improved, and damage such as micro-cracks and scratches on the surface of the impeller 100 can be avoided. It can also improve the efficiency of fluid flow, ensure the purity and stability of system operation, extend equipment life and improve overall operating efficiency, and improve stability and reliability.

[0035] The impeller 100 in this example ensures efficient operation in pumps, fans, compressors, and related industrial applications, while also integrating vibration damping and noise reduction functions. With the rapid development of fluid machinery technology, the requirements for the working efficiency and stability of the impeller 100 are increasing, while vibration and noise issues during equipment operation are also receiving growing attention. The impeller 100 in this example meets the requirements for efficient flow while effectively reducing vibration and noise.

[0036] The impeller 100, through surface treatment processes combined with advanced computational fluid dynamics (CFD) technology and optimization design methods, significantly improves fluid flow efficiency, ensures clean and stable system operation, extends equipment life, and enhances overall operating efficiency. It ensures smooth fluid flow, reduces turbulence losses, and further improves the impeller 100's performance. By increasing efficiency and reducing unnecessary energy loss, it helps lower overall energy consumption, aligning with modern environmental and energy-saving trends. The product is manufactured in strict accordance with international safety standards and undergoes rigorous quality control testing to ensure its long-term stability and reliability.

[0037] Combination Figure 2 When coarsely polishing the impeller 100, a polishing disc, including a wool disc, is used. Alternatively, a polishing pad, including a nylon pad, can also be used. Appropriate coarse polishing parameters can be set: based on the material and shape of the workpiece, the appropriate polishing pressure, speed, and time can be set. Polishing then begins by fixing the impeller 100 to the fixture, starting the polishing machine, and performing preliminary polishing to remove larger protrusions or uneven areas.

[0038] The abrasive material can include alumina or diamond.

[0039] When fine polishing the impeller (100mm), a polishing pad, including a polyurethane pad, should be used. Compared to coarse polishing, the polishing disc or pad needs to be replaced with a softer one, such as a polyurethane pad. Polishing parameters also need to be adjusted, appropriately reducing polishing pressure and speed, and extending polishing time to obtain a smoother surface. The pressure used for fine polishing of the impeller (100mm) is lower than the pressure used for coarse polishing.

[0040] When performing ultra-fine polishing of the impeller 100, a polishing disc, including a cloth, is used. A polishing slurry, consisting of abrasive particles and deionized water, is also used. Compared to fine polishing, ultra-fine polishing requires the selection of a polishing slurry, which is made by mixing nano-sized abrasive particles with deionized water or other solvents. A very soft polishing disc or pad, such as a cloth or polyurethane pad, also needs to be selected. Polishing parameters need to be adjusted to further reduce polishing pressure and speed, and extend polishing time to achieve extremely high surface finish. Then, ultra-fine polishing begins until a nano-level surface finish is achieved. The pressure used for ultra-fine polishing of the impeller 100 is lower than that used for fine polishing.

[0041] Before rough polishing the impeller 100, it undergoes a pre-cleaning process to remove oil and dust. Specifically, the workpiece surface can be thoroughly cleaned using a lint-free cloth and deionized water or a suitable solvent to remove oil, dust, and other impurities. Following this, an inspection is performed, carefully examining the workpiece surface to ensure there are no cracks, scratches, or other defects. If necessary, repairs are carried out first.

[0042] After ultra-precision polishing of impeller 100, it is cleaned and dried to remove residual abrasive and polishing fluid. Specifically, during cleaning, deionized water and a lint-free cloth can be used to thoroughly clean the workpiece surface and remove residual abrasive and polishing fluid. Ultrasonic cleaning can also be used for deep cleaning, ensuring a clean and residue-free surface. Drying is then performed using a clean lint-free cloth or compressed air to thoroughly dry the workpiece surface.

[0043] After ultra-precision polishing of impeller 100, it undergoes inspection and evaluation. Specifically, surface roughness can be measured using a surface roughness meter to ensure the required smoothness is achieved. Microscopic inspection can also be used to observe the microscopic morphology of the surface and check for defects such as scratches and cracks. Interferometry can also be used; for workpieces requiring high precision, an interferometer can be used to measure surface flatness and waviness.

[0044] The impeller 100 can also undergo post-processing, such as applying a protective layer. A protective layer, such as an anti-oxidation coating or an anti-scratch coating, can be applied to the polished surface. Finally, the processed workpieces are packaged and stored in a clean, dry environment to avoid contamination and damage.

[0045] Impeller 100 uses abrasives of different grit sizes to gradually refine the surface, from coarse grinding to fine grinding and then to ultra-fine polishing to achieve a high surface finish (Ra value), which can reduce friction loss and improve hydrodynamic performance.

[0046] By precisely controlling the material removal rate and amount by adjusting the polishing pressure, speed, and time, over-polishing can be avoided, thus preventing dimensional deviations.

[0047] Impeller 100 has better uniformity. By using automated equipment or precision fixtures, it is ensured that impeller 100 is stable and subjected to uniform force during the polishing process, thus ensuring the consistency of polishing of the entire impeller 100 surface and avoiding local overheating or uneven wear.

[0048] The manufacturing of Impeller 100 is more environmentally friendly and safer. It uses closed polishing equipment and is equipped with an effective dust removal and wastewater treatment system. Operators wear appropriate protective equipment to reduce environmental pollution such as dust and waste liquid generated during the polishing process and to ensure the safety of operators.

[0049] After processing, the surface finish of impeller 100 can be improved, and it can be used in pumps, fans, compressors and related industries. It can improve the surface quality of impeller 100 and uniformly organize the airflow inside the flow channel.

[0050] While specific embodiments of this utility model have been described above, those skilled in the art should understand that these are merely illustrative examples, and the scope of protection of this utility model is defined by the appended claims. Those skilled in the art can make various changes or modifications to these embodiments without departing from the principles and essence of this utility model, but all such changes and modifications fall within the scope of protection of this utility model.

Claims

1. An impeller, characterized by, The impeller comprises a wheel disc and a plurality of blades, the wheel disc comprises a center column and a bottom disc, the plurality of blades are arranged at intervals, the inner side surface of the blade is attached to the outer peripheral surface of the center column, and the bottom surface of the blade is attached to the bottom disc; A rough polishing powder with a particle size ranging from 1 micron to 10 microns is used to polish the impeller to remove protrusions or uneven parts on the impeller, then a fine polishing is performed on the impeller using a polishing powder with a particle size ranging from 0.5 micron to 1 micron, and finally an ultra-fine polishing is performed on the impeller using a polishing powder with a particle size ranging from 0.05 micron to 0.1 micron.

2. The impeller of claim 1, wherein When the rough polishing is performed on the impeller, a polishing disc is used, and the polishing disc comprises a wool disc. Alternatively, when the rough polishing is performed on the impeller, a polishing pad is used, and the polishing pad comprises a nylon pad.

3. The impeller of claim 1 wherein, The material of the polishing powder comprises aluminum oxide or diamond.

4. The impeller of claim 1 wherein, When the fine polishing is performed on the impeller, a polishing pad is used, and the polishing pad comprises a polyurethane pad. Alternatively, when the ultra-fine polishing is performed on the impeller, a polishing disc is used, and the polishing disc comprises a flannel.

5. The impeller of claim 1 wherein, When the ultra-fine polishing is performed on the impeller, a polishing liquid is also used, and the polishing liquid comprises a polishing powder and deionized water.

6. The impeller of claim 1 wherein, The pressure when the fine polishing is performed on the impeller is less than the pressure when the rough polishing is performed on the impeller. And / or, the pressure when the ultra-fine polishing is performed on the impeller is less than the pressure when the fine polishing is performed on the impeller.

7. The impeller of claim 1 wherein, Before the rough polishing is performed on the impeller, a cleaning pretreatment is performed on the impeller to remove oil stains or dust on the impeller.

8. The impeller of claim 1 wherein, After the ultra-fine polishing is performed on the impeller, the impeller is cleaned and dried to remove residual polishing powder and polishing liquid.

9. The impeller of claim 1 wherein, After the ultra-fine polishing is performed on the impeller, the impeller is detected and evaluated.

10. A centrifugal compressor characterized by, The centrifugal compressor comprises the impeller as claimed in any one of claims 1 to 9.

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