CN204852005U - A permanent magnet bearing device for expander - Google Patents
A permanent magnet bearing device for expander Download PDFInfo
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- CN204852005U CN204852005U CN201520492145.8U CN201520492145U CN204852005U CN 204852005 U CN204852005 U CN 204852005U CN 201520492145 U CN201520492145 U CN 201520492145U CN 204852005 U CN204852005 U CN 204852005U
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Abstract
The utility model discloses a permanent magnet bearing device for expander, including rotor (1), axial magnetic unit (2), radial magnetic unit (3) and casing (6), its characterized in that: axial magnetic unit (2) including axial outer lane magnet (21) and axial inner circle magnet (22), just both constitute contactless normal running fit to the magnetic polarity on the opposite face of axial outer lane magnet (21) and axial inner circle magnet (22) on the contrary, radial magnetic unit (3) including radial outer lane magnet (31) and radial inner circle magnet (32), just both constitute contactless normal running fit to the magnetic polarity on the opposite face of radial outer lane magnet (31) and radial inner circle magnet (32) on the contrary. The utility model discloses an expander permanent magnet bearing device magnetic field is stable, simple structure, can eliminate mechanical friction, reduces wearing and tearing, energy consumption and noise, need not lubrication sealing and long service life, makes the long -time steady operation of expander.
Description
Technical field
The utility model relates to bearing means, refer in particular to a kind of permanent-magnet bearing arrangement for decompressor that simultaneously can produce stable radial suspension force, axial force, specifically a kind of utilize the permanent magnet magnetic line of force to have longitudinal tensile resistence and horizontal compression resistance force character thus the permanent-magnet bearing arrangement for decompressor making the suspension support power between permanent magnet, axial force perpendicular with the air gap magnetic line of force respectively.
Background technique
At present, the bearing that decompressor industry generally uses is gas bearing.Be exactly beat some holes on bearing, logical upper nitrogen or air; Although frictional force is little, air film supported ability is little, poor stability, and processing request is very high.
Summary of the invention
The purpose of this utility model is for prior art Problems existing, provide a kind of utilize the permanent magnet magnetic line of force to have longitudinal tensile resistence and horizontal compression resistance force character thus the permanent-magnet bearing arrangement for decompressor making the suspension support power between permanent magnet, axial force perpendicular with the air gap magnetic line of force respectively.
The purpose of this utility model solves by the following technical programs:
A kind of permanent-magnet bearing arrangement for decompressor, comprise rotor, axial magnetic group, radial magnetic group and housing, it is characterized in that: described axial magnetic group comprises axial outer ring magnet and axial inner ring magnet, axial outer ring magnet and axial outer ring magnet contrary with the magnetic field polarity on the opposing side of axial inner ring magnet and axial inner ring magnet form not contact and are rotatably assorted to provide radial suspension to adjust power and limit the axial outer ring magnet of corresponding setting and diametrically moving of axial inner ring magnet; Described radial magnetic group comprises radial outer ring magnet and radial inner ring magnet, and radial outer ring magnet and radial outer ring magnet contrary with the magnetic field polarity on the opposing side of radial inner ring magnet forms not contact with radial inner ring magnet and be rotatably assorted to provide axial adjustment power to limit the radial outer ring magnet of corresponding setting and the axial relative movement of radial inner ring magnet.
The two ends of described housing be respectively equipped be fixedly installed on housing by screw two ends end face on for the end cap magnetic support of enclosing housing, rotor is provided with and is fixedly installed on rotor and follows magnetic support in rotor turns, interior magnetic support is positioned at the inner side of end cap magnetic support, the axial outer ring magnet be arranged on each end cap magnetic support axial inner ends face forms one group of axial magnetic group with the axial inner ring magnet be arranged on interior magnetic support axial outer end face, makes two groups of axial magnetic groups and the acting in conjunction of radial magnetic group allow housing not contact with rotor formation and is rotatably assorted.
The axial inner ends face of described interior magnetic support is also provided with axial inner ring magnet, and on the outside end face of lumen shaft of the housing corresponding with on the axial inner ends face of interior magnetic support, be also provided with the corresponding axial outer ring magnet of axial inner ring magnet with this, be positioned at axial inner ring magnet on the axial inner ends face of magnetic support and the axial outer ring magnet be positioned on the outside end face of lumen shaft of housing also forms one group of axial magnetic group, four groups of axial magnetic groups and the acting in conjunction of radial magnetic group allow housing form not contact with rotor and be rotatably assorted.
The radial outer ring magnet be arranged in the inner chamber inner radial wall of housing forms one group of radial magnetic group with the radial inner ring magnet be arranged on the radial outer peripheral surface of rotor.
The radial outer peripheral surface of the interior magnetic support of described two ends of rotor is all provided with radial inner ring magnet, and the radial outer ring magnet that the inner chamber inner radial wall of corresponding with the radial outer peripheral surface of the above-mentioned interior magnetic support respectively housing of above-mentioned radial inner ring magnet is arranged forms two groups of radial magnetic groups.
Described axial outer ring magnet is all magnet ring with axial inner ring magnet and this magnet ring adopts identical, that magnetic intensity the is identical annular permanent magnet of magnetic field polarity to make; Described radial outer ring magnet is all magnet ring with radial inner ring magnet and this magnet ring adopts identical, that magnetic intensity the is identical annular permanent magnet of magnetic field polarity to make.
Select a pair magnet ring to form axial outer ring magnet and axial inner ring magnet respectively in same group of axial magnetic group, and select a pair magnet ring to form radial outer ring magnet and radial inner ring magnet respectively in same group of radial magnetic group.
Select multipair magnet ring to form axial outer ring magnet and axial inner ring magnet respectively in same group of axial magnetic group, and select a pair magnet ring to form radial outer ring magnet and radial inner ring magnet respectively in same group of radial magnetic group.
Select a pair magnet ring to form axial outer ring magnet and axial inner ring magnet respectively in same group of axial magnetic group, and select multipair magnet ring to form radial outer ring magnet and radial inner ring magnet respectively in same group of radial magnetic group.
Select multipair magnet ring to form axial outer ring magnet and axial inner ring magnet respectively in same group of axial magnetic group, and select multipair magnet ring to form radial outer ring magnet and radial inner ring magnet respectively in same group of radial magnetic group.
When selecting multipair magnet ring to form axial outer ring magnet and axial inner ring magnet respectively in same group of axial magnetic group, the magnetic field polarity of the adjacent magnet ring in same group of axial outer ring magnet is contrary and magnetic force size is identical, and the magnetic field polarity of adjacent magnet ring in same group of axial inner ring magnet is contrary and magnetic force size is identical.
When selecting multipair magnet ring to form radial outer ring magnet and radial inner ring magnet respectively in same group of radial magnetic group, the magnetic field polarity of the adjacent magnet ring in same group of radial outer ring magnet is contrary and magnetic force size is identical, and the magnetic field polarity of adjacent magnet ring in same group of radial inner ring magnet is contrary and magnetic force size is identical.
The utility model has the following advantages compared to existing technology:
The utility model by utilize the permanent magnet magnetic line of force to have the character of longitudinal tensile resistence and horizontal compression resistance force to make the suspension support power between permanent magnet, axial force perpendicular with the air gap magnetic line of force respectively and and then produce stable radial suspension force, axial force, power limits diametrically the moving of the axial outer ring magnet of corresponding setting and axial inner ring magnet, radial magnetic group provides axial adjustment power to limit the radial outer ring magnet of corresponding setting and the axial relative movement of radial inner ring magnet to make axial magnetic group provide radial suspension to adjust; This permanent-magnet bearing arrangement being used for decompressor utilizes permanent magnet two like magnetic poles repel each other, the characteristic that there is a natural attraction between the sexes, can eliminate mechanical friction, reduces wearing and tearing, energy consumption and noise, without the need to lubrication, sealing and long service life, makes decompressor long-time steady operation.
Accompanying drawing explanation
Accompanying drawing 1 is permanent-magnet bearing arrangement embodiment one structural representation for decompressor of the present utility model;
Accompanying drawing 2 is permanent-magnet bearing arrangement embodiment two structural representation for decompressor of the present utility model.
Wherein: 1-rotor; 2-axial magnetic group; 21-axial outer ring magnet; 22-axial inner ring magnet; 3-radial magnetic group; 31-radial outer ring magnet; 32-radial inner ring magnet; 4-end cap magnetic support; 5-interior magnetic support; 6-housing; 7-screw.
Embodiment
Below in conjunction with accompanying drawing and embodiment, the utility model is further described.
As shown in Figure 1-2: a kind of permanent-magnet bearing arrangement for decompressor, comprise rotor 1, axial magnetic group 2, radial magnetic group 3 and housing 6, the two ends of housing 6 be respectively equipped be fixedly installed on housing 6 by screw 7 two ends end face on for the end cap magnetic support 4 of enclosing housing 6, rotor 1 is provided with and is fixedly installed on rotor 1 and follows magnetic support 5 in rotor 1 rotation, interior magnetic support 5 is positioned at the inner side of end cap magnetic support 4.Wherein axial magnetic group 2 comprises axial outer ring magnet 21 and axial inner ring magnet 22, and axial outer ring magnet 21 and axial outer ring magnet 21 and axial inner ring magnet 22 contrary with the magnetic field polarity on the opposing side of axial inner ring magnet 22 form not contact and be rotatably assorted to provide radial suspension to adjust power and limit the axial outer ring magnet 21 of corresponding setting and diametrically moving of axial inner ring magnet 22; Radial magnetic group 3 comprises radial outer ring magnet 31 and radial inner ring magnet 32, and radial outer ring magnet 31 and radial outer ring magnet 31 and radial inner ring magnet 32 contrary with the magnetic field polarity on the opposing side of radial inner ring magnet 32 form not contact and be rotatably assorted to provide axial adjustment power to limit the radial outer ring magnet 31 of corresponding setting and the axial relative movement of radial inner ring magnet 32.In axial magnetic group 2 and radial magnetic group 3, axial outer ring magnet 21 is all magnet ring with axial inner ring magnet 22 and this magnet ring adopts identical, that magnetic intensity the is identical annular permanent magnet of magnetic field polarity to make, and same radial outer ring magnet 31 is all magnet ring with radial inner ring magnet 32 and this magnet ring adopts identical, that magnetic intensity the is identical annular permanent magnet of magnetic field polarity to make.For the magnet ring quantity in axial magnetic group 2 and radial magnetic group 3, sum up following four kinds of modes: 1), select a pair magnet ring to form axial outer ring magnet 21 and axial inner ring magnet 22 respectively in same group of axial magnetic group 2, and select a pair magnet ring to form radial outer ring magnet 31 and radial inner ring magnet 32 respectively in same group of radial magnetic group 3; 2), select multipair magnet ring to form axial outer ring magnet 21 and axial inner ring magnet 22 respectively in same group of axial magnetic group 2, and select a pair magnet ring to form radial outer ring magnet 31 and radial inner ring magnet 32 respectively in same group of radial magnetic group 3; 3), select a pair magnet ring to form axial outer ring magnet 21 and axial inner ring magnet 22 respectively in same group of axial magnetic group 2, and select multipair magnet ring to form radial outer ring magnet 31 and radial inner ring magnet 32 respectively in same group of radial magnetic group 3; 4), select multipair magnet ring to form axial outer ring magnet 21 and axial inner ring magnet 22 respectively in same group of axial magnetic group 2, and in same group of radial magnetic group 3, select multipair magnet ring to form radial outer ring magnet 31 and radial inner ring magnet 32(structure respectively as shown in accompanying drawing 1,2).On the permanent magnetism magnetic suspension carrying roller of above-mentioned four kinds of modes, when selecting multipair magnet ring to form axial outer ring magnet 21 and axial inner ring magnet 22 respectively in same group of axial magnetic group 2, the magnetic field polarity of the adjacent magnet ring in same group of axial outer ring magnet 21 is contrary and magnetic force size is identical, and the magnetic field polarity of adjacent magnet ring in same group of axial inner ring magnet 22 is contrary and magnetic force size is identical; And when selecting multipair magnet ring to form radial outer ring magnet 31 and radial inner ring magnet 32 respectively in same group of radial magnetic group 3, the magnetic field polarity of the adjacent magnet ring in same group of radial outer ring magnet 31 is contrary and magnetic force size is identical, and the magnetic field polarity of adjacent magnet ring in same group of radial inner ring magnet 32 is contrary and magnetic force size is identical.
On the basis of said structure, the even number set axial magnetic groups 2 such as two groups or four groups are generally set, the structure of two groups of axial magnetic groups 2 is: be arranged on axial outer ring magnet on each end cap magnetic support 4 axial inner ends face 21 and the axial inner ring magnet 22 be arranged on interior magnetic support 5 axial outer end face forms one group of axial magnetic group 2, makes two groups of axial magnetic groups 2 and the acting in conjunction of radial magnetic group 3 allow housing 6 form not contact with rotor 1 and be rotatably assorted.In order to make the operation of this decompressor more stable, also can add two groups of axial magnetic groups 2 again, then four groups of axial magnetic groups 2 with the addition of following structure on the basis of two groups of axial magnetic group 2 structures: on the axial inner ends face of interior magnetic support 5, be also provided with axial inner ring magnet 22, and the axial outer ring magnet 21 that axial inner ring magnet 22 is corresponding with this is also provided with on the outside end face of lumen shaft of the housing 6 corresponding with on the axial inner ends face of interior magnetic support 5, the axial inner ring magnet 22 be positioned on the axial inner ends face of magnetic support 5 also forms one group of axial magnetic group 2 with the axial outer ring magnet 21 be positioned on the outside end face of lumen shaft of housing 6, four groups of axial magnetic groups 2 and the acting in conjunction of radial magnetic group 3 allow housing 6 form not contact with rotor 1 and be rotatably assorted.As for position and the structure thereof of radial magnetic group 3, generally there is the following two kinds, Yi Zhongshi: the radial outer ring magnet 31 be arranged in the inner chamber inner radial wall of housing 6 forms one group of radial magnetic group 3 with the radial inner ring magnet 32 be arranged on the radial outer peripheral surface of rotor 1; The radial outer peripheral surface of the second magnetic support 5 in rotor 1 two ends is all provided with radial inner ring magnet 32, and the radial outer ring magnet 31 that the inner chamber inner radial wall of corresponding with the radial outer peripheral surface of the above-mentioned interior magnetic support 5 respectively housing 6 of above-mentioned radial inner ring magnet 32 is arranged forms two groups of radial magnetic groups 3.
The further instruction permanent-magnet bearing arrangement for decompressor of the present utility model is carried out below by specific embodiment and its function.
Embodiment one
The structural drawing of the embodiment one of the permanent-magnet bearing arrangement for decompressor that the utility model provides as shown in Figure 1, this permanent-magnet bearing arrangement being used for decompressor comprises rotor 1, four groups of axial magnetic groups 2, one group of radial magnetic group 3 and housing 6, wherein axial magnetic group 2 comprises axial outer ring magnet 21 and axial inner ring magnet 22, axial outer ring magnet 21 and axial outer ring magnet 21 and axial inner ring magnet 22 contrary with the magnetic field polarity on the opposing side of axial inner ring magnet 22 form not contact and are rotatably assorted to provide radial suspension to adjust power and limit the axial outer ring magnet 21 of corresponding setting and diametrically moving of axial inner ring magnet 22, radial magnetic group 3 comprises radial outer ring magnet 31 and radial inner ring magnet 32, and radial outer ring magnet 31 and radial outer ring magnet 31 and radial inner ring magnet 32 contrary with the magnetic field polarity on the opposing side of radial inner ring magnet 32 form not contact and be rotatably assorted to provide axial adjustment power to limit the radial outer ring magnet 31 of corresponding setting and the axial relative movement of radial inner ring magnet 32.The two ends of housing 6 be respectively equipped be fixedly installed on housing 6 by screw 7 two ends end face on for the end cap magnetic support 4 of enclosing housing 6, rotor 1 is provided with and is fixedly installed on rotor 1 and follows magnetic support 5 in rotor 1 rotation, interior magnetic support 5 is positioned at the inner side of end cap magnetic support 4, and the axial outer ring magnet 21 be arranged on each end cap magnetic support 4 axial inner ends face forms one group of axial magnetic group 2 with the axial inner ring magnet 22 be arranged on interior magnetic support 5 axial outer end face; The axial inner ends face of interior magnetic support 5 is also provided with axial inner ring magnet 22, and the axial outer ring magnet 21 that axial inner ring magnet 22 is corresponding with this is also provided with on the outside end face of lumen shaft of the housing 6 corresponding with on the axial inner ends face of interior magnetic support 5, the axial inner ring magnet 22 be positioned on the axial inner ends face of magnetic support 5 also forms second group of axial magnetic group 2 with the axial outer ring magnet 21 be positioned on the outside end face of lumen shaft of housing 6.The radial outer ring magnet 31 be arranged in addition in the inner chamber inner radial wall of housing 6 forms one group of radial magnetic group 3 with the radial inner ring magnet 32 be arranged on the radial outer peripheral surface of rotor 1, and this radial magnetic group 3 closes on the axial magnetic group 2 at rotor 1 left end place.
Due to disclosed in embodiment one in the permanent-magnet bearing arrangement of decompressor, the two ends of rotor 1 are all provided with two groups of axial magnetic groups 2, and axial outer ring magnet 21 in two groups of axial magnetic groups 2 at rotor 1 left end place and axial inner ring magnet 2 is made up of two pairs of magnet rings respectively, axial outer ring magnet 21 in two groups of two groups of axial magnetic groups 2 at rotor 1 right-hand member place and axial inner ring magnet 2 form radial outer ring magnet 31 in the radial magnetic group 3 of the axial magnetic group 2 of closing on rotor 1 left end place by three pairs of magnet rings respectively and radial inner ring magnet 32 is then made up of eight pairs of magnet rings respectively.This is used for the permanent-magnet bearing arrangement of decompressor in use, due to the deadweight of rotor 1 or thrust load make axial inner ring magnet 22 have a tendency moved down time, because the permanent magnet magnetic line of force has the character of longitudinal tensile resistence and horizontal compression resistance force, make that the corresponding magnet ring in the axial outer ring magnet 21 that is oppositely arranged and axial inner ring magnet 22 produces radial gravitation, adjacent magnet ring produces radial repulsion to stop the radial deflection of rotor 1, thus the support force formed upwards, make rotor 1 have radial stability; Otherwise be also like this to axial outer ring magnet 21, but axial magnetic group 2 is unstable in the axial direction.And between the radial outer ring magnet 31 often organizing corresponding setting and radial inner ring magnet 32, once radial inner ring magnet 32 produces axial dipole field, because the permanent magnet magnetic line of force has the character of longitudinal tensile resistence and horizontal compression resistance force, make that the corresponding magnet ring in the radial outer ring magnet 31 that is oppositely arranged and axial inner ring magnet 22 produces axial gravitation, adjacent magnet ring produces vertical repulsive force to stop the axial dipole field of rotor 1, thus forms stable axial force; Otherwise diameter is also like this to outer ring magnet 31.The radial magnetic group 3 of four groups of axial magnetic groups 2 and one group with the use of, make rotor 1 realize suspending and reach the requirement of stability and rigidity.
Embodiment two
The structural drawing of the embodiment two of the permanent magnetism magnetic suspension carrying roller that the utility model provides as shown in Figure 2, this permanent-magnet bearing arrangement being used for decompressor comprises rotor 1, four groups of axial magnetic groups 2, two groups of radial magnetic groups 3 and housing 6, wherein axial magnetic group 2 comprises axial outer ring magnet 21 and axial inner ring magnet 22, axial outer ring magnet 21 and axial outer ring magnet 21 and axial inner ring magnet 22 contrary with the magnetic field polarity on the opposing side of axial inner ring magnet 22 form not contact and are rotatably assorted to provide radial suspension to adjust power and limit the axial outer ring magnet 21 of corresponding setting and diametrically moving of axial inner ring magnet 22, radial magnetic group 3 comprises radial outer ring magnet 31 and radial inner ring magnet 32, and radial outer ring magnet 31 and radial outer ring magnet 31 and radial inner ring magnet 32 contrary with the magnetic field polarity on the opposing side of radial inner ring magnet 32 form not contact and be rotatably assorted to provide axial adjustment power to limit the radial outer ring magnet 31 of corresponding setting and the axial relative movement of radial inner ring magnet 32.The two ends of housing 6 be respectively equipped be fixedly installed on housing 6 by screw 7 two ends end face on for the end cap magnetic support 4 of enclosing housing 6, rotor 1 is provided with and is fixedly installed on rotor 1 and follows magnetic support 5 in rotor 1 rotation, interior magnetic support 5 is positioned at the inner side of end cap magnetic support 4, and the axial outer ring magnet 21 be arranged on each end cap magnetic support 4 axial inner ends face forms one group of axial magnetic group 2 with the axial inner ring magnet 22 be arranged on interior magnetic support 5 axial outer end face; The axial inner ends face of interior magnetic support 5 is also provided with axial inner ring magnet 22, and the axial outer ring magnet 21 that axial inner ring magnet 22 is corresponding with this is also provided with on the outside end face of lumen shaft of the housing 6 corresponding with on the axial inner ends face of interior magnetic support 5, the axial inner ring magnet 22 be positioned on the axial inner ends face of magnetic support 5 also forms second group of axial magnetic group 2 with the axial outer ring magnet 21 be positioned on the outside end face of lumen shaft of housing 6.In addition in rotor 1 two ends magnetic support 5 radial outer peripheral surface on be all provided with radial inner ring magnet 32, and the radial outer ring magnet 31 that the inner chamber inner radial wall of corresponding with the radial outer peripheral surface of the above-mentioned interior magnetic support 5 respectively housing 6 of above-mentioned radial inner ring magnet 32 is arranged is formed between two groups of axial magnetic groups 2 that two groups of radial magnetic groups 3 of radial magnetic groups 3, two groups lay respectively at rotor 1 left end place and between two groups of axial magnetic groups 2 at rotor 1 right-hand member place.
Due to disclosed in embodiment two in the permanent-magnet bearing arrangement of decompressor, the two ends of rotor 1 are all provided with two groups of axial magnetic groups 2 and one group of radial magnetic group 3, and axial outer ring magnet 21 in two groups of axial magnetic groups 2 at rotor 1 left end place and axial inner ring magnet 2 is made up of three pairs of magnet rings respectively, axial outer ring magnet 21 in two groups of two groups of axial magnetic groups 2 at rotor 1 right-hand member place and axial inner ring magnet 2 is made up of two pairs of magnet rings respectively, radial outer ring magnet 31 in two groups of radial magnetic groups 3 and radial inner ring magnet 32 are made up of four pairs of magnet rings all respectively.This is used for the permanent-magnet bearing arrangement of decompressor in use, due to the deadweight of rotor 1 or thrust load make axial inner ring magnet 22 have a tendency moved down time, because the permanent magnet magnetic line of force has the character of longitudinal tensile resistence and horizontal compression resistance force, make that the corresponding magnet ring in the axial outer ring magnet 21 that is oppositely arranged and axial inner ring magnet 22 produces radial gravitation, adjacent magnet ring produces radial repulsion to stop the radial deflection of rotor 1, thus the support force formed upwards, make rotor 1 have radial stability; Otherwise be also like this to axial outer ring magnet 21, but axial magnetic group 2 is unstable in the axial direction.And between the radial outer ring magnet 31 often organizing corresponding setting and radial inner ring magnet 32, once radial inner ring magnet 32 produces axial dipole field, because the permanent magnet magnetic line of force has the character of longitudinal tensile resistence and horizontal compression resistance force, make that the corresponding magnet ring in the radial outer ring magnet 31 that is oppositely arranged and axial inner ring magnet 22 produces axial gravitation, adjacent magnet ring produces vertical repulsive force to stop the axial dipole field of rotor 1, thus forms stable axial force; Otherwise diameter is also like this to outer ring magnet 31.The radial magnetic groups 3 of four groups of axial magnetic groups 2 and two groups with the use of, makes rotor 1 realize suspending and reach the requirement of stability and rigidity, and the permanent-magnet bearing arrangement stability for decompressor that relative embodiment one provides is better.
The utility model by utilize the permanent magnet magnetic line of force to have the character of longitudinal tensile resistence and horizontal compression resistance force to make the suspension support power between permanent magnet, axial force perpendicular with the air gap magnetic line of force respectively and and then produce stable radial suspension force, axial force, power limits diametrically the moving of the axial outer ring magnet 21 of corresponding setting and axial inner ring magnet 22, radial magnetic group 3 provides axial adjustment power to limit the radial outer ring magnet 31 of corresponding setting and the axial relative movement of radial inner ring magnet 32 to make axial magnetic group 2 provide radial suspension to adjust; This permanent-magnet bearing arrangement utilizes permanent magnet two like magnetic poles repel each other, the characteristic that there is a natural attraction between the sexes, can eliminate mechanical friction, reduces wearing and tearing, energy consumption and noise, without the need to lubrication, sealing and long service life, makes decompressor long-time steady operation.
Above embodiment is only and technological thought of the present utility model is described, protection domain of the present utility model can not be limited with this, every technological thought according to the utility model proposes, any change that technological scheme basis is done, all falls within the utility model protection domain; The technology that the utility model does not relate to all is realized by prior art.
Claims (12)
1. the permanent-magnet bearing arrangement for decompressor, comprise rotor (1), axial magnetic group (2), radial magnetic group (3) and housing (6), it is characterized in that: described axial magnetic group (2) comprises axial outer ring magnet (21) and axial inner ring magnet (22), axial outer ring magnet (21) and axial outer ring magnet (21) contrary with the magnetic field polarity on the opposing side of axial inner ring magnet (22) forms not contact with axial inner ring magnet (22) and is rotatably assorted; Described radial magnetic group (3) comprises radial outer ring magnet (31) and radial inner ring magnet (32), and radial outer ring magnet (31) and radial outer ring magnet (31) contrary with the magnetic field polarity on the opposing side of radial inner ring magnet (32) forms not contact with radial inner ring magnet (32) and be rotatably assorted.
2. the permanent-magnet bearing arrangement for decompressor according to claim 1, it is characterized in that: the two ends of described housing (6) be respectively equipped be fixedly installed on housing (6) by screw (7) two ends end face on for the end cap magnetic support (4) of enclosing housing (6), rotor (1) is provided with and is fixedly installed on rotor (1) and goes up and follow the interior magnetic support (5) that rotor (1) rotates, interior magnetic support (5) is positioned at the inner side of end cap magnetic support (4), be arranged on axial outer ring magnet (21) on each end cap magnetic support (4) axial inner ends face and the axial inner ring magnet (22) be arranged on interior magnetic support (5) axial outer end face forms one group of axial magnetic group (2), make two groups of axial magnetic groups (2) and the acting in conjunction of radial magnetic group (3) allow housing (6) not contact with rotor (1) formation to be rotatably assorted.
3. the permanent-magnet bearing arrangement for decompressor according to claim 2, it is characterized in that: the axial inner ends face of described interior magnetic support (5) is also provided with axial inner ring magnet (22), and the axial outer ring magnet (21) that axial inner ring magnet (22) is corresponding with this is also provided with on the outside end face of lumen shaft of the housing (6) corresponding with on the axial inner ends face of interior magnetic support (5), be positioned at the axial inner ring magnet (22) on the axial inner ends face of magnetic support (5) and the axial outer ring magnet (21) be positioned on the outside end face of lumen shaft of housing (6) also forms one group of axial magnetic group (2), four groups of axial magnetic groups (2) and the acting in conjunction of radial magnetic group (3) allow housing (6) form not contact with rotor (1) and be rotatably assorted.
4. the permanent-magnet bearing arrangement for decompressor according to Claims 2 or 3, is characterized in that: the radial outer ring magnet (31) be arranged in the inner chamber inner radial wall of housing (6) forms one group of radial magnetic group (3) with the radial inner ring magnet (32) be arranged on the radial outer peripheral surface of rotor (1).
5. the permanent-magnet bearing arrangement for decompressor according to Claims 2 or 3, it is characterized in that: the radial outer peripheral surface of the interior magnetic support (5) at described rotor (1) two ends is all provided with radial inner ring magnet (32), and the radial outer ring magnet (31) that the inner chamber inner radial wall of corresponding with the radial outer peripheral surface of above-mentioned interior magnetic support (5) the respectively housing (6) of above-mentioned radial inner ring magnet (32) is arranged forms two groups of radial magnetic group (3).
6. the permanent-magnet bearing arrangement for decompressor according to claim 1, is characterized in that: described axial outer ring magnet (21) is all magnet ring with axial inner ring magnet (22) and this magnet ring adopts identical, that magnetic intensity the is identical annular permanent magnet of magnetic field polarity to make; Described radial outer ring magnet (31) is all magnet ring with radial inner ring magnet (32) and this magnet ring adopts identical, that magnetic intensity the is identical annular permanent magnet of magnetic field polarity to make.
7. the permanent-magnet bearing arrangement for decompressor according to claim 4, it is characterized in that: in same group of axial magnetic group (2), select a pair magnet ring to form axial outer ring magnet (21) and axial inner ring magnet (22) respectively, and select a pair magnet ring to form radial outer ring magnet (31) and radial inner ring magnet (32) respectively in same group of radial magnetic group (3).
8. the permanent-magnet bearing arrangement for decompressor according to claim 4, it is characterized in that: in same group of axial magnetic group (2), select multipair magnet ring to form axial outer ring magnet (21) and axial inner ring magnet (22) respectively, and select a pair magnet ring to form radial outer ring magnet (31) and radial inner ring magnet (32) respectively in same group of radial magnetic group (3).
9. the permanent-magnet bearing arrangement for decompressor according to claim 4, it is characterized in that: in same group of axial magnetic group (2), select a pair magnet ring to form axial outer ring magnet (21) and axial inner ring magnet (22) respectively, and select multipair magnet ring to form radial outer ring magnet (31) and radial inner ring magnet (32) respectively in same group of radial magnetic group (3).
10. the permanent-magnet bearing arrangement for decompressor according to claim 4, it is characterized in that: in same group of described axial magnetic group (2), select multipair magnet ring to form axial outer ring magnet (21) and axial inner ring magnet (22) respectively, and select multipair magnet ring to form radial outer ring magnet (31) and radial inner ring magnet (32) respectively in same group of radial magnetic group (3).
The permanent-magnet bearing arrangement for decompressor described in 11. according to Claim 8 or 10, it is characterized in that: when selecting multipair magnet ring to form axial outer ring magnet (21) and axial inner ring magnet (22) respectively in same group of described axial magnetic group (2), the magnetic field polarity of the adjacent magnet ring in same group of axial outer ring magnet (21) is contrary and magnetic force size is identical, and the magnetic field polarity of adjacent magnet ring in same group of axial inner ring magnet (22) is contrary and magnetic force size is identical.
12. permanent-magnet bearing arrangements for decompressor according to claim 9 or 10, it is characterized in that: when selecting multipair magnet ring to form radial outer ring magnet (31) and radial inner ring magnet (32) respectively in described same group radial magnetic group (3), the magnetic field polarity of the adjacent magnet ring in same group of radial outer ring magnet (31) is contrary and magnetic force size is identical, and the magnetic field polarity of adjacent magnet ring in same group of radial inner ring magnet (32) is contrary and magnetic force size is identical.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520492145.8U CN204852005U (en) | 2015-07-09 | 2015-07-09 | A permanent magnet bearing device for expander |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520492145.8U CN204852005U (en) | 2015-07-09 | 2015-07-09 | A permanent magnet bearing device for expander |
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| Publication Number | Publication Date |
|---|---|
| CN204852005U true CN204852005U (en) | 2015-12-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520492145.8U Active CN204852005U (en) | 2015-07-09 | 2015-07-09 | A permanent magnet bearing device for expander |
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| CN (1) | CN204852005U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104948585A (en) * | 2015-07-09 | 2015-09-30 | 南京艾凌节能技术有限公司 | Permanent magnet bearing device for expansion machine |
-
2015
- 2015-07-09 CN CN201520492145.8U patent/CN204852005U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104948585A (en) * | 2015-07-09 | 2015-09-30 | 南京艾凌节能技术有限公司 | Permanent magnet bearing device for expansion machine |
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