技术领域technical field
本发明涉及磁悬浮技术领域，更具体地说，涉及一种可调整腔内动平衡的磁悬浮转子及其动平衡调整方法。The invention relates to the technical field of magnetic suspension, and more specifically relates to a magnetic suspension rotor capable of adjusting dynamic balance in a cavity and a dynamic balance adjustment method thereof.
背景技术Background technique
磁悬浮泵是一种采用磁轴承作为转子支承的泵，它利用磁轴承将转子稳定地悬浮在空中，使转子在高速工作过程中与定子之间没有机械接触，具有无机械磨损、能耗低、允许转速高、噪声低、寿命长、无需润滑等优点。在磁悬浮人工心脏泵等特殊场合，对转子的外表面的加工处理非常复杂，一旦处理完成，外表面不允许再有其它损伤。但是，在加工过程中，由于外壳本身的不均匀或加工处理造成的不均匀，会引起转子的动不平衡。转子内部灌封过程中，由于转子外壳不均匀，流入转子外壳和转子内部结构之间的灌封材料也会加剧转子的动不平衡。磁悬浮转子没有机械支撑，在被动悬浮的自由度上具有阻尼很小的谐振特性。转子旋转时还有陀螺效应。微小的动不平衡就会被谐振环节和陀螺效应放大，造成严重后果，如转子撞击定子、磁悬浮发热甚至磁悬浮失效。The magnetic levitation pump is a pump that uses magnetic bearings as the rotor support. It uses magnetic bearings to suspend the rotor stably in the air, so that there is no mechanical contact between the rotor and the stator during high-speed operation. It has no mechanical wear, low energy consumption, It has the advantages of high speed, low noise, long life and no need for lubrication. In special occasions such as magnetic levitation artificial heart pumps, the processing of the outer surface of the rotor is very complicated. Once the processing is completed, no other damage to the outer surface is allowed. However, in the process of processing, due to the unevenness of the shell itself or the unevenness caused by processing, the dynamic imbalance of the rotor will be caused. During the internal potting process of the rotor, due to the unevenness of the rotor shell, the potting material flowing between the rotor shell and the internal structure of the rotor will also aggravate the dynamic imbalance of the rotor. The magnetic levitation rotor has no mechanical support, and has resonance characteristics with little damping in the degree of freedom of passive levitation. There is also a gyroscopic effect when the rotor rotates. A small dynamic imbalance will be amplified by the resonance link and the gyroscopic effect, causing serious consequences, such as the rotor hitting the stator, the magnetic levitation heating and even the magnetic levitation failure.
发明内容Contents of the invention
有鉴于此，本发明提供了一种可调整腔内动平衡的磁悬浮转子及其动平衡调整方法。In view of this, the present invention provides a magnetic levitation rotor capable of adjusting the dynamic balance in the chamber and a method for adjusting the dynamic balance thereof.
为了解决上述技术问题，本发明提供了一种可调整腔内动平衡的磁悬浮转子，包括转子叶轮和转子外壳，所述转子外壳内设有转子磁悬浮结构、腔内动平衡调整槽，所述转子外壳上开有用于熔融液滴输送微针穿透的转子轴心微孔；所述转子磁悬浮结构为圆柱状，所述腔内动平衡调整槽设置于所述转子磁悬浮结构的内壁上。In order to solve the above-mentioned technical problems, the present invention provides a magnetic levitation rotor capable of adjusting dynamic balance in the chamber, which includes a rotor impeller and a rotor casing. The outer casing is provided with a rotor axis microhole for the penetration of the microneedle transporting molten droplets; the rotor magnetic levitation structure is cylindrical, and the dynamic balance adjustment groove in the cavity is arranged on the inner wall of the rotor magnetic levitation structure.
优选的，所述腔内动平衡调整槽轴向对称分布。Preferably, the dynamic balance adjustment grooves in the cavity are axially symmetrically distributed.
优选的，所述熔融液滴输送微针通过所述转子轴心微孔插入所述转子磁悬浮结构中，且熔融液滴输送微针沿轴向插入深度可以调整。Preferably, the molten liquid droplet delivery microneedle is inserted into the rotor magnetic levitation structure through the rotor axis microhole, and the axial insertion depth of the molten droplet delivery microneedle can be adjusted.
优选的，所述转子轴心微孔的直径小于0.5mm。Preferably, the diameter of the microhole at the center of the rotor shaft is less than 0.5mm.
本发明还提供了一种所述磁悬浮转子的动平衡调整方法，包括：The present invention also provides a method for adjusting the dynamic balance of the magnetic levitation rotor, comprising:
将熔融液滴微针通过所述转子轴心微孔将熔融液滴送入转子空腔，使熔融液滴落入所述腔内动平衡调整槽中并凝固粘附，实现动平衡调整。Sending the molten droplet into the cavity of the rotor through the microneedle of the molten droplet through the micropore of the rotor axis, so that the molten droplet falls into the dynamic balance adjustment groove in the cavity and solidifies and adheres to realize dynamic balance adjustment.
优选的，在完成动平衡调整后利用激光对所述转子轴心微孔进行烧熔封堵。Preferably, after the dynamic balance adjustment is completed, a laser is used to melt and seal the micropores of the rotor shaft.
本发明提供了一种可调整动平衡的磁悬浮转子，包括转子叶轮、转子磁悬浮结构、转子外壳、腔内动平衡调整槽、转子轴心微孔、熔融液滴输送微针；所述转子磁悬浮结构为圆柱状，置于所述转子外壳内；所述腔内动平衡调整槽设置于所述转子磁悬浮结构的内壁上。本发明的方案针对转子外壳的不均匀问题，通过熔融液滴调整转子空腔中的质量分布，使转子达到动平衡。本发明所述方法，在转子的内部空腔中进行动平衡调整，特别适用于对外表面要求非常严格，且由于外壳不均匀引起的转子动不平衡情况，如磁悬浮人工心脏血泵转子。The invention provides a magnetic levitation rotor with adjustable dynamic balance, which includes a rotor impeller, a rotor magnetic levitation structure, a rotor shell, a dynamic balance adjustment groove in a cavity, a microhole in the rotor axis, and a microneedle for transporting molten droplets; the rotor magnetic levitation structure It is cylindrical and placed in the rotor casing; the dynamic balance adjustment groove in the cavity is arranged on the inner wall of the rotor magnetic levitation structure. The solution of the present invention aims at the problem of unevenness of the rotor shell, and adjusts the mass distribution in the cavity of the rotor through molten liquid droplets, so that the rotor can achieve dynamic balance. The method of the present invention performs dynamic balance adjustment in the internal cavity of the rotor, and is especially suitable for very strict requirements on the outer surface, and the dynamic unbalance of the rotor caused by uneven casing, such as the rotor of a magnetic levitation artificial heart blood pump.
本发明还提供了一种所述磁悬浮转子的动平衡调整方法，包括：将熔融液滴微针通过所述转子轴心微孔将熔融液滴送入转子空腔，使熔融液滴落入所述腔内动平衡调整槽中并凝固粘附，实现动平衡调整。然后将所述转子轴心微孔封堵，使转子外表面无大损伤，又能够调整磁悬浮转子的动态平衡。The present invention also provides a method for adjusting the dynamic balance of the magnetic levitation rotor, comprising: sending the molten droplet into the cavity of the rotor through the microneedle of the molten droplet through the microhole of the rotor axis, so that the molten droplet falls into the The dynamic balance adjustment groove in the cavity is solidified and adhered to realize the dynamic balance adjustment. Then, the micropores in the center of the rotor are blocked, so that the outer surface of the rotor has no major damage, and the dynamic balance of the magnetic levitation rotor can be adjusted.
附图说明Description of drawings
为了更清楚地说明本发明实施例或现有技术中的技术方案，下面将对实施例或现有技术描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本发明的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only These are some embodiments of the present invention. Those skilled in the art can also obtain other drawings based on these drawings without creative work.
图1为本发明提供的可调整动平衡的磁悬浮转子的剖面图结构示意图。Fig. 1 is a cross-sectional structural schematic diagram of an adjustable dynamic balance magnetic levitation rotor provided by the present invention.
具体实施方式detailed description
本发明公开了一种磁悬浮转子腔内动平衡调整装置与方法。The invention discloses a dynamic balance adjustment device and method in a cavity of a magnetic levitation rotor.
下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整的描述，显然，所描述的实施例仅仅是本发明一部分实施例，而不是全部的实施例。基于本发明的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts fall within the protection scope of the present invention.
如图1所示，图1为本法明提供的磁悬浮转子腔内动平衡调整装置与方法剖面图结构示意图。As shown in Fig. 1, Fig. 1 is a schematic structural diagram of a sectional view of a dynamic balance adjustment device and method in a magnetic levitation rotor cavity provided by the present invention.
本发明提供一种磁悬浮转子腔内动平衡调整装置和方法，包括转子叶轮、转子磁悬浮结构、转子外壳、腔内动平衡调整槽、转子轴心微孔、熔融液滴输送微针。所述磁悬浮调整槽及本体为圆柱状，置于所述磁悬浮转子内的空腔中。本发明的方案针对转子外壳的不均匀问题，通过熔融液滴调整转子空腔中的质量分布，使转子达到动平衡。The invention provides a device and method for adjusting dynamic balance in a cavity of a magnetic levitation rotor, including a rotor impeller, a rotor magnetic levitation structure, a rotor shell, a cavity dynamic balance adjustment groove, a microhole in the rotor axis, and a microneedle for transporting molten droplets. The magnetic levitation adjustment groove and the main body are cylindrical and placed in the cavity of the magnetic levitation rotor. The solution of the present invention aims at the unevenness of the rotor shell, and adjusts the mass distribution in the cavity of the rotor through the molten liquid droplets, so that the rotor can achieve dynamic balance.
按照本发明的实施例，所述转子由转子叶轮①、转子磁悬浮结构②、转子外壳③、动平衡调整槽④、熔融液滴微针⑤、转子轴心微孔⑥、熔融液滴⑦构成。转子叶轮①的作用是对流体做功、转子磁悬浮结构②的作用是实现转子所有自由度的悬浮。转子叶轮①和转子磁悬浮结构②不是本发明的主要内容，故不展开叙述，图中表示仅作为示意。转子外壳③包裹了转子的所有外表面，且具有一定的质量不均匀性，是动不平衡的主要来源。动平衡调整槽④位于转子内的空腔中，其基体可以与转子磁悬浮结构②不同。熔融液滴微针⑤通过转子轴心微孔⑥插入到转子中，且插入深度可以任意调整。熔融液滴微针⑤送出近似呈球状的熔融液滴⑦。According to an embodiment of the present invention, the rotor is composed of a rotor impeller ①, a rotor magnetic levitation structure ②, a rotor housing ③, a dynamic balance adjustment tank ④, a molten droplet microneedle ⑤, a rotor axis microhole ⑥, and a molten droplet ⑦. The role of the rotor impeller ① is to do work on the fluid, and the role of the rotor magnetic levitation structure ② is to realize the suspension of all degrees of freedom of the rotor. The rotor impeller ① and the rotor magnetic levitation structure ② are not the main content of the present invention, so they will not be described, and the representation in the figure is only for illustration. The rotor casing ③ wraps all the outer surfaces of the rotor, and has a certain quality unevenness, which is the main source of dynamic unbalance. The dynamic balance adjustment groove ④ is located in the cavity in the rotor, and its base body can be different from the rotor magnetic levitation structure ②. The molten droplet microneedle ⑤ is inserted into the rotor through the microhole ⑥ in the rotor shaft, and the insertion depth can be adjusted arbitrarily. The molten droplet microneedle ⑤ sends out approximately spherical molten droplet ⑦.
熔融液滴⑦离开熔融液滴微针⑤后，在重力的作用下下落，落入动平衡调整槽④中。动平衡调整槽④有许多个，呈轴向分布。通过调整熔融液滴微针⑤插入转子空腔的深度，可以控制熔融液滴⑦落入动平衡调整槽④的任意一个槽中。通过调整转子整体绕轴的旋转角度，可以控制熔融液滴⑦落入动平衡调整槽④的任意一个周向位置上。也就是说，通过本发明所述装置与方法，可以控制熔融液滴⑦落在转子动平衡调整槽④的任意轴向位置和任意周向位置上。After the molten droplet ⑦ leaves the molten droplet microneedle ⑤, it falls under the action of gravity and falls into the dynamic balance adjustment tank ④. There are many dynamic balance adjustment grooves ④, distributed axially. By adjusting the depth of the molten drop microneedle ⑤ inserted into the cavity of the rotor, the molten drop ⑦ can be controlled to fall into any groove of the dynamic balance adjustment groove ④. By adjusting the rotation angle of the rotor as a whole around the shaft, it is possible to control the molten drop ⑦ to fall into any circumferential position of the dynamic balance adjustment groove ④. That is to say, through the device and method of the present invention, the molten drop ⑦ can be controlled to fall on any axial position and any circumferential position of the rotor dynamic balance adjustment groove ④.
熔融液滴⑦落在预先设定好的动平衡调整槽④的某一轴向周向确定位置上后，熔融液滴⑦的热量被动平衡调整槽④吸收，熔融液滴⑦会凝固并粘附在动平衡调整槽④上。熔融液滴⑦和动平衡调整槽④采用的材料并不影响本发明的实质内容。举例来说，动平衡调整槽④采用铜，熔融液滴⑦采用电子行业中常用的铅锡合金。铅锡合金在较低的温度下即可熔融，熔融后的铅锡合金液滴具有很高的表面张力，会凝结呈球状。当球状熔融铅锡液滴⑦落在动平衡调整槽④上时，由于铜和铅锡合金有良好的侵润性，在铅锡合金凝固时将牢牢的附着在铜质的动平衡调整槽④上。After the molten drop ⑦ falls on a predetermined position in the axial and circumferential direction of the preset dynamic balance adjustment tank ④, the heat of the molten drop ⑦ is passively absorbed by the balance adjustment tank ④, and the molten drop ⑦ will solidify and adhere On the dynamic balance adjustment groove ④. The material that molten droplet 7. and dynamic balance adjustment tank 4. adopts does not affect the essential content of the present invention. For example, the dynamic balance adjustment tank ④ is made of copper, and the molten drop ⑦ is made of lead-tin alloy commonly used in the electronics industry. The lead-tin alloy can be melted at a relatively low temperature, and the melted lead-tin alloy droplet has a high surface tension and will condense into a spherical shape. When the spherical molten lead-tin drop ⑦ falls on the dynamic balance adjustment tank ④, due to the good wettability of copper and lead-tin alloy, it will firmly adhere to the copper dynamic balance adjustment tank when the lead-tin alloy solidifies ④ on.
在测量仪器的协助下，根据测得的动平衡修正量和修正位置，重复上述过程，利用熔融液滴，不断地调整转子的动平衡特征。最终，转子的动不平衡情况逐渐被降低到一个可以接受的范围。当动平衡调整结束后，熔融液滴微针⑤将从转子轴心微孔⑥中抽出。转子轴心微孔⑥的直径在0.5mm以下，利用激光烧熔后会完成自我封堵，最后进行相应的表面处理。由于转子轴心微孔⑥处于转子轴心处，且激光烧熔封堵的过程中没有外加物质，因此转子轴心微孔⑥的激光烧熔封堵过程不影响转子整体的动平衡性能。With the assistance of measuring instruments, the above-mentioned process is repeated according to the measured dynamic balance correction amount and correction position, and the dynamic balance characteristics of the rotor are continuously adjusted by using molten liquid droplets. Finally, the dynamic unbalance of the rotor is gradually reduced to an acceptable range. After the dynamic balance adjustment is completed, the molten droplet microneedle ⑤ will be drawn out from the microhole ⑥ of the rotor axis. The diameter of the rotor axis microhole ⑥ is less than 0.5mm, and will be self-sealing after laser ablation, and finally the corresponding surface treatment will be carried out. Since the rotor axis microhole ⑥ is located at the rotor axis, and there is no external substance in the process of laser melting and sealing, the laser melting and sealing process of the rotor axis microhole ⑥ does not affect the overall dynamic balance performance of the rotor.
对所公开的实施例的上述说明，使本领域专业技术人员能够实现或使用本发明。对这些实施例的多种修改对本领域的专业技术人员来说将是显而易见的，本文中所定义的一般原理可以在不脱离本发明的精神或范围的情况下，在其它实施例中实现。因此，本发明将不会被限制于本文所示的这些实施例，而是要符合与本文所公开的原理和新颖特点相一致的最宽的范围。The above description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the present invention will not be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410088873.2ACN103850979B (en) | 2014-03-12 | 2014-03-12 | Dynamically balanced magnetic suspension rotor and dynamic balance adjusting method thereof in adjustable chamber |
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410088873.2ACN103850979B (en) | 2014-03-12 | 2014-03-12 | Dynamically balanced magnetic suspension rotor and dynamic balance adjusting method thereof in adjustable chamber |
| Publication Number | Publication Date |
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| CN103850979A CN103850979A (en) | 2014-06-11 |
| CN103850979Btrue CN103850979B (en) | 2016-04-06 |
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410088873.2AActiveCN103850979B (en) | 2014-03-12 | 2014-03-12 | Dynamically balanced magnetic suspension rotor and dynamic balance adjusting method thereof in adjustable chamber |
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| CN (1) | CN103850979B (en) |
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| Publication number | Publication date |
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| CN103850979A (en) | 2014-06-11 |
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| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right | Effective date of registration:20190203 Address after:Room 311, Building 2, Yangchenghu International Science and Technology Pioneering Park, 116 Chengyang Road, Xiangcheng District, Suzhou City, Jiangsu Province Patentee after:SUZHOU ZHUOYITE ELECTROMECHANICAL TECHNOLOGY CO.,LTD. Address before:215123 199 Ren Yan Road, Suzhou Industrial Park, Jiangsu Patentee before:Soochow University | |
| CP02 | Change in the address of a patent holder | ||
| CP02 | Change in the address of a patent holder | Address after:G4-701, Artificial Intelligence Industrial Park, No. 88, Jinji Lake Avenue, Suzhou Industrial Park, Jiangsu Province, 215127 Patentee after:Suzhou suci Intelligent Technology Co.,Ltd. Address before:Room 311, Building 2, Yangchenghu International Science and Technology Pioneering Park, 116 Chengyang Road, Xiangcheng District, Suzhou City, Jiangsu Province Patentee before:Suzhou suci Intelligent Technology Co.,Ltd. |