CN101355291A - Super conductive motor and manufacturing method thereof - Google Patents
Super conductive motor and manufacturing method thereof Download PDFInfo
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- CN101355291A CN101355291A CNA2008101432539A CN200810143253A CN101355291A CN 101355291 A CN101355291 A CN 101355291A CN A2008101432539 A CNA2008101432539 A CN A2008101432539A CN 200810143253 A CN200810143253 A CN 200810143253A CN 101355291 A CN101355291 A CN 101355291A
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Abstract
The invention provides a superconducting motor and a manufacture method thereof. The superconducting motor comprises a superconducting rotor, a stator, an closure of the driving end, an end closure of the non-driving end and a liquid neon container, wherein the superconducting rotor is formed by nesting, sealing and welding an internal rotor and an external rotor which form two nested sealing containers; the internal rotor consists of a thin-wall long-thin tube, an end shaft of the non-driving end, a torque tube, of the non-driving end a connecting tube, a superconducting magnetic pole, the liquid neon container filled with liquid neon, a torque tube of the driving end, an axial contraction compensating mechanism, and an end shaft of the driving end; the thin-wall long-thin tube is arranged in a center hole of the end shaft of the non-driving end and inside the torque tube of the non-driving end and is communicated with the liquid neon container through the connecting tube; the superconducting magnetic pole is arranged on the periphery of the liquid neon container; and the bottom end of the liquid neon container is connected with the end shaft of the driving end through the torque tube of the driving end and the axial contraction compensating mechanism. The invention also comprises the method for manufacturing the superconducting motor which has a power factor up to 1 and small volume.
Description
Technical field
The present invention relates to a kind of motor and manufacture method thereof, especially relate to a kind of superconducting motor and manufacture method thereof.
Background technology
Existing known common electric machine, its stator, rotor be operation at normal temperatures all, and the power factor of motor is all less than 1.The general structure of known superconducting motor is: stator is the superconduction stator, and rotor is conventional threephase asynchronous machine rotor.This superconducting motor, volume is bigger, required refrigerating efficiency height, power factor is still less than 1.
Summary of the invention
The object of the present invention is to provide a kind of volume little, power factor can reach 1, and loss is zero superconducting motor and manufacture method thereof.
Technical scheme of the present invention is:
The present invention's superconducting motor comprises superconducting rotor, stator, drive end end cap, non-drive end shield, liquid neon container, the structure of described stator is identical with the structure of existing known threephase asynchronous machine stator, described superconducting rotor is by internal rotor and nestable airtight being welded of external rotor, and internal rotor and external rotor constitute two nestable closed containers; Described internal rotor is made of thin-wall slim pipe, anti-drive end end axle, anti-drive end moment pipe, tube connector, superconduction magnetic pole, the liquid neon container that liquid neon is housed, drive end moment pipe, axial shrinkage compensation arrangement, drive end end axle; Thin-wall slim pipe places in anti-drive end end axle centre bore and the anti-drive end moment pipe, and is communicated with liquid neon container by tube connector; The superconduction magnetic pole places liquid neon container periphery; Liquid neon container bottom joins by drive end moment pipe and axial shrinkage compensation arrangement and drive end end axle.
Described thin-wall slim pipe draw ratio is suitable 〉=and 6, thickness is suitable≤1mm.
Described tube connector should be docked with the aluminum pipe taper by stainless steel tube and constitute, the stainless steel tube interface of tube connector is the concave cone type, the aluminum pipe interface is the convex cone type, and such docking mode adds friction welding (FW) welding, can effectively improve the firmness that stainless steel tube docks with aluminum pipe and the reliability of work; The stainless steel pipe end of tube connector is connected with thin-wall slim pipe, and the aluminum pipe end of tube connector is packed in the mating holes of liquid neon container.
Described axial shrinkage compensation arrangement can be selected dish-like shell fragment for use.
The key technical problem that the present invention's superconducting motor manufacturing need solve comprises: inner and outer rotors welding sealing method, the thin-wall slim pipe processing method of motor, " stainless steel+aluminium " foreign material welding method of tube connector, the freezing assembling method of interference fit of each parts of liquid neon container assemblies, by internal rotor assembly method and the dynamic balance checking method that the multistage parts constitute, inner and outer rotors welding back method for removing stress.
The present inventor is through long-term test of many times research, and described key technical problem adopts following method to achieve a solution one by one finally:
Inside and outside rotor adopts vertical welding; The vertical milling mode is adopted in the processing of circle in the thin-wall slim pipe; The processing of thin-wall slim pipe cylindrical with interior circle location, is carried out cylindrical processing with expander formula axle as expander; Before the airtight and tube connector of liquid neon container and the welding of liquid neon container mating holes, adopt the freezing suit of interference fit of same material; Stainless steel tube and aluminum pipe interface adopt the friction welding (FW) welding in the tube connector; Horizontal fit is selected in the internal rotor assembling for use, and the connection between each section is expanded from the middle to both ends; The internal rotor dynamic balance checking adopts one group of uniform through hole of increase on the anti-drive end end axle on the internal rotor, and increases by one group of corresponding clamping screw, makes the internal rotor of non-rigid connection be connected into a rigid unitary, carries out dynamic balance checking again; After treating the internal rotor dynamic balance checking, remove clamping screw again, and the uniform through hole on the soldering and sealing anti-drive end end axle, to guarantee the airtight axial motion formula in the space that forms between the inside and outside rotor; Adopt ultrasonic destressing method, eliminate the stress of the airtight Produced after Welding of superconducting rotor.
The freezing suit of the interference fit of described same material is that the aluminum pipe end with tube connector places liquid nitrogen, and in the mating holes of the aluminium matter of packing into fast after freezing contraction liquid neon container, the aluminum pipe end to liquid neon container and tube connector welds again.
The horizontal fit of described internal rotor adopts the mode of middle earlier back two ends expansion to assemble, and promptly earlier from the liquid neon container of interlude, installs each section parts additional to its two ends piecemeal; After each section of internal rotor assembled, again its two ends are positioned over the assembling of rolling on two rolling wheel supports, with the bilayer film of the superconduction magnetic pole appearance on the wraparound internal rotor.
Described ultrasonic destressing method, the above ultrasonic high-frequency energy of usable frequency 20 KHz directly impacts the surface of weldment weld seam.
The superconducting rotor of the present invention's superconducting motor can move under-243 ℃ the low temperature environment that the cold dielectric fluid neon of circulation low temperature produces, power factor can reach 1, loss is zero, increased substantially the power ratio of unit mass, motor volume is little, be an important breakthrough of heavy-duty motor miniaturization, required refrigerating efficiency is low; The present invention's who makes with manufacture method of the present invention superconducting motor, reliable, failure-free operation for a long time.
Description of drawings
Fig. 1 is the structural representation of superconducting motor one embodiment of the present invention.
Fig. 2 is the superconducting rotor structural representation among Fig. 1.
Fig. 3 is the inner rotor core enlarged diagram among Fig. 2.
Fig. 4 is the interior circular milling processing and loading clamp mode schematic diagram of the thin-wall slim pipe among Fig. 3.
Fig. 5 is the cylindrical processing X-pandisk structural representation of the thin-wall slim pipe among Fig. 3.
Fig. 6 is the tube connector foreign material Welding Structure enlarged drawing among Fig. 3.
Among the figure: 1, superconducting rotor, 2, the drive end end cap, 3, stator, 4, non-drive end shield, 5, internal rotor, 6, external rotor, 7, in, the external rotor weld seam, 8; thin-wall slim pipe, 9; anti-drive end end axle; 10; anti-drive end moment pipe, 11; tube connector, 12; superconduction magnetic pole; 13; liquid neon container, 14; liquid neon, 15; drive end moment pipe; 16; dish-like shell fragment, 17; drive end end axle, 18; upper press ring; 19; the parallel folder of anti-rotation, 20; following pressure ring, 21; lower platen; 22; expander formula axle, 23; medium, 24; top board; 25; fastening nut, 26; long stainless steel tube, 27; stainless steel tube; 28; aluminum pipe, 29; long aluminum pipe.
Embodiment
The invention will be further described below in conjunction with accompanying drawing.
With reference to Fig. 1,2,3, superconducting motor embodiment of the present invention comprises superconducting rotor 1, stator 3, drive end end cap 2, non-drive end shield 4, liquid neon container assemblies 13, the structure of stator 3 is identical with the structure of existing known threephase asynchronous machine stator, described superconducting rotor 1 is nestable and carry out airtight being welded by weld seam 7 by internal rotor 5, external rotor 6, and internal rotor 5, external rotor 6 constitute two nestable closed containers;
With reference to Fig. 3, internal rotor 5 is made of thin-wall slim pipe 8, anti-drive end end axle 9, anti-drive end moment pipe 10, tube connector 11, superconduction magnetic pole 12, the liquid neon container 13 that liquid neon 14 is housed, drive end moment pipe 15, dish-like shell fragment (also being axial shrinkage compensation arrangement) 16, drive end end axle 17; Thin-wall slim pipe 8 places in anti-drive end end axle 9 centre bores and the anti-drive end moment pipe 10, and is communicated with liquid neon container 13 by tube connector 11; Superconduction magnetic pole 12 places liquid neon container 13 peripheries; Liquid neon container 13 bottoms join with drive end end axle 17 by drive end moment pipe 15 and dish-like shell fragment 16.
Thin-wall slim pipe 8 draw ratios=6, thickness=1mm; Tube connector 11 is docked with the aluminum pipe taper by stainless steel tube to be formed, and the stainless steel tube interface of tube connector is the concave cone type, and the aluminum pipe interface is the convex cone type; The aluminum pipe end of tube connector is packed in the mating holes of aluminium matter liquid neon container 13.
Below will close manufacturing method for key introduced:
After internal rotor 5 and external rotor 6 weld, constitute two nestable closed containers, superconducting rotor 1 vacuum interlayer is vacuumized, and adopt helium that rotor is carried out leakage-check test, the inside and outside rotor weld seam 7 of superconducting rotor 1, the weld seam leak rate is all less than 5 * 10
-9Pa.L/s, it is qualified to hunt leak.
The freezing suit of interference fit of internal rotor 6 each parts: be that aluminum pipe end with tube connector 11 places liquid nitrogen, in the mating holes of the aluminium matter of packing into fast after freezing contraction liquid neon container 13, to realize both interference fit; On the basis of interference fit, again the aluminum pipe end of liquid neon container 13 with tube connector 11 welded.
Multisection type internal rotor 6 assemblings: because of this internal rotor 5 axially is assembled by the multistage parts, so select horizontal fit for use, the mode of two ends, back expansion is assembled in the middle of adopting earlier simultaneously, promptly earlier from the liquid neon container 13 of interlude, installs each section parts additional to its two ends piecemeal; After internal rotor 5 each section assemblings finish, again its two ends are positioned over the assembling of rolling on two rolling wheel supports, with the bilayer film of superconduction magnetic pole 12 appearances on the wraparound internal rotor 5.
The interior circle processing of thin-wall slim pipe 8: with reference to Fig. 4, thin-wall slim pipe 8 is placed between upper press ring 18 and the following pressure ring 20, adorn the parallel folder 19 of an anti-rotation on the following pressure ring 20, can carry out End Milling Process to circle in the thin-wall slim pipe 8.
The cylindrical processing of thin-wall slim pipe 8: with reference to Fig. 5, thin-wall slim pipe 8 is placed between lower platen 21 and the top board 24, the expander formula axle 22 of passing thin-wall slim pipe 8 dies is equipped with at lower platen 21 and top board 24 centers, be filled with medium 23 between expander formula axle 22 outer walls and thin-wall slim pipe 8 inwalls, expander formula axle 22 1 ends are provided with nut 25, fastening nut 25, thin-wall slim pipe 8 can be located.Then, just can carry out cylindrical processing to thin-wall slim pipe 8.
The processing of tube connector 11: with reference to Fig. 6, tube connector 11 is docked with aluminum pipe 28 tapers by stainless steel tube 27 and constitutes, stainless steel tube 27 ports are inserted in the port of long stainless steel tube 26, the port of aluminum pipe 28 is inserted in the port of long aluminum pipe 29, adopt friction welding (FW) then the taper docking port firm welding of stainless steel tube 27 with aluminum pipe 28.
Superconducting rotor 1 airtight postwelding adopts ultrasonic destressing method: with the direct surface of impacting at the weldment weld seam of the high-frequency energy of 20 KHz.
The detection foundation of ultrasonic destressing method destressing: ASTM standard E837-92.Main measuring instrument is: the static resistance straingauge.Measuring point is arranged as: near the annular angle weld-fusion line of end, superconducting rotor 1 two ends.The residual stress of each point all has obvious decline after ultrasonic destressing method is handled.Adopt ultrasonic destressing method to superconducting rotor 1 welding back destressing, can satisfy fully that this superconducting motor is electric, the requirement of mechanical performance.
Claims (8)
1. superconducting motor, comprise superconducting rotor, stator, drive end end cap, non-drive end shield, liquid neon container, it is characterized in that described superconducting rotor is by internal rotor and nestable airtight being welded of external rotor, internal rotor and external rotor constitute two nestable closed containers; Described internal rotor is made of thin-wall slim pipe, anti-drive end end axle, anti-drive end moment pipe, tube connector, superconduction magnetic pole, the liquid neon container that liquid neon is housed, drive end moment pipe, axial shrinkage compensation arrangement, drive end end axle; Thin-wall slim pipe places in anti-drive end end axle centre bore and the anti-drive end moment pipe, and is communicated with liquid neon container by tube connector; The superconduction magnetic pole places liquid neon container periphery; Liquid neon container bottom joins by drive end moment pipe and axial shrinkage compensation arrangement and drive end end axle.
2. superconducting motor as claimed in claim 1 is characterized in that, described thin-wall slim pipe draw ratio 〉=6, thickness≤1mm.
3. superconducting motor as claimed in claim 1 is characterized in that, described tube connector is docked with the aluminum pipe taper by stainless steel tube and constitutes, and the stainless steel tube interface of tube connector is the concave cone type, and the aluminum pipe interface is the convex cone type; The stainless steel pipe end of tube connector is connected with thin-wall slim pipe, and the aluminum pipe end of tube connector is packed in the mating holes of liquid neon container.
4. superconducting motor as claimed in claim 1 is characterized in that, described axial shrinkage compensation arrangement is dish-like shell fragment.
One kind as superconducting motor as described in one of claim 1-4 manufacture method, it is characterized in that inside and outside rotor adopts vertical welding; The vertical milling mode is adopted in the processing of circle in the thin-wall slim pipe; The processing of thin-wall slim pipe cylindrical with interior circle location, is carried out cylindrical processing with expander formula axle as expander; Before the airtight and tube connector of liquid neon container and the welding of liquid neon container mating holes, adopt the freezing suit of interference fit of same material; Stainless steel tube and aluminum pipe interface adopt the friction welding (FW) welding in the tube connector; Horizontal fit is selected in the internal rotor assembling for use, and the connection between each section is expanded from the middle to both ends; The internal rotor dynamic balance checking adopts one group of uniform through hole of increase on the anti-drive end end axle on the internal rotor, and increases by one group of corresponding clamping screw, makes the internal rotor of non-rigid connection be connected into a rigid unitary, carries out dynamic balance checking again; After treating the internal rotor dynamic balance checking, remove clamping screw again, and the uniform through hole on the soldering and sealing anti-drive end end axle, to guarantee the airtight axial motion formula in the space that forms between the inside and outside rotor; Adopt ultrasonic destressing method, eliminate the stress of the airtight Produced after Welding of superconducting rotor.
6. as the manufacture method of superconducting motor as described in the claim 5, it is characterized in that, the freezing suit of the interference fit of described same material, be that aluminum pipe end with tube connector places liquid nitrogen, in the mating holes of the aluminium matter of packing into fast after freezing contraction liquid neon container, the aluminum pipe end to liquid neon container and tube connector welds again.
7. as the manufacture method of superconducting motor as described in the claim 5, it is characterized in that the horizontal fit of described internal rotor adopts the mode of middle earlier back two ends expansion to assemble, promptly, install each section parts additional to its two ends piecemeal earlier from the liquid neon container of interlude; After each section of internal rotor assembled, again its two ends are positioned over the assembling of rolling on two rolling wheel supports, with the bilayer film of the superconduction magnetic pole appearance on the wraparound internal rotor.
8. as the manufacture method of superconducting motor as described in one of claim 5-7, it is characterized in that described ultrasonic destressing method is the surface of directly impacting the weldment weld seam with the above high-frequency energy of 20 KHz.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008101432539A CN101355291B (en) | 2008-09-19 | 2008-09-19 | Super conductive motor and manufacturing method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008101432539A CN101355291B (en) | 2008-09-19 | 2008-09-19 | Super conductive motor and manufacturing method thereof |
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| CN101355291A true CN101355291A (en) | 2009-01-28 |
| CN101355291B CN101355291B (en) | 2010-12-01 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101795050A (en) * | 2010-03-31 | 2010-08-04 | 哈尔滨工业大学 | Superconductive high dynamic direct drive electric actuator |
| CN102130570A (en) * | 2011-03-17 | 2011-07-20 | 中国船舶重工集团公司第七一二研究所 | High-temperature superconducting motor with axial cold contraction compensation mechanism |
| CN104349357A (en) * | 2013-08-05 | 2015-02-11 | 联想(北京)有限公司 | Method and device for updating signal intensity |
| CN108539937A (en) * | 2018-06-10 | 2018-09-14 | 常州神力电机股份有限公司 | A kind of band casing stator core is freezed expander tooling |
-
2008
- 2008-09-19 CN CN2008101432539A patent/CN101355291B/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101795050A (en) * | 2010-03-31 | 2010-08-04 | 哈尔滨工业大学 | Superconductive high dynamic direct drive electric actuator |
| CN102130570A (en) * | 2011-03-17 | 2011-07-20 | 中国船舶重工集团公司第七一二研究所 | High-temperature superconducting motor with axial cold contraction compensation mechanism |
| CN104349357A (en) * | 2013-08-05 | 2015-02-11 | 联想(北京)有限公司 | Method and device for updating signal intensity |
| CN108539937A (en) * | 2018-06-10 | 2018-09-14 | 常州神力电机股份有限公司 | A kind of band casing stator core is freezed expander tooling |
| CN108539937B (en) * | 2018-06-10 | 2023-07-04 | 常州神力电机股份有限公司 | Stator core welding and expanding tooling with shell |
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| Publication number | Publication date |
|---|---|
| CN101355291B (en) | 2010-12-01 |
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