阅读说明：本技术 高温超导磁浮系统直线平移动态性能测试装置及测量方法 (High-temperature superconducting magnetic suspension system linear translation dynamic performance testing device and measuring method ) 是由 周大进 史景文 程翠华 赵勇 于 2021-06-18 设计创作，主要内容包括：本发明公开高温超导磁浮系统直线平移动态性能测试装置及测量方法,其包括底座、水平滑台模组、垂直滑台模组、三轴力传感器、低温杜瓦和永磁轨道；所述水平滑台模组设于底座上,所述永磁轨道连接于水平滑台模组上并由水平滑台模组带动做直线平移往返运动；所述低温杜瓦设于永磁轨道的上方,低温杜瓦的底部固定有高温超导块,所述低温杜瓦的顶部通过三轴力传感器与垂直滑台模组连接,所述垂直滑台模组带动低温杜瓦做垂直运动。本发明通过直线平移往返运动,实现了系统连续动态运行,同时解决了永磁轨道线路长度有限及圆环形永磁轨道线路带来的轨道曲率偏差,使测量结果更加接近系统实际运行状况下的动态特性。(The invention discloses a device and a method for testing linear translation dynamic performance of a high-temperature superconducting magnetic suspension system, wherein the device comprises a base, a horizontal sliding table module, a vertical sliding table module, a triaxial force sensor, a low-temperature Dewar and a permanent magnet track; the permanent magnet track is connected to the horizontal sliding table module and is driven by the horizontal sliding table module to do linear translation reciprocating motion; the low temperature dewar is located permanent magnetism orbital top, and the bottom of low temperature dewar is fixed with high temperature superconductive piece, the top of low temperature dewar is passed through triaxial force sensor and is connected with perpendicular slip table module, perpendicular slip table module drives the low temperature dewar and is vertical motion. The invention realizes the continuous dynamic operation of the system through the linear translation reciprocating motion, and simultaneously solves the problems of limited length of the permanent magnet track circuit and track curvature deviation caused by the circular ring-shaped permanent magnet track circuit, so that the measurement result is closer to the dynamic characteristic of the system under the actual operation condition.)

1. The high-temperature superconducting magnetic levitation system linear translation dynamic performance testing device is characterized in that: the device comprises a base, a horizontal sliding table module, a vertical sliding table module, a triaxial force sensor, a low-temperature Dewar and a permanent magnet track;

the permanent magnet track is connected to the horizontal sliding table module and is driven by the horizontal sliding table module to do linear translation reciprocating motion;

the low temperature dewar is located permanent magnetism orbital top, and the bottom of low temperature dewar is fixed with high temperature superconductive piece, the top of low temperature dewar is passed through triaxial force sensor and is connected with perpendicular slip table module, thereby perpendicular slip table module drives the low temperature dewar and is vertical motion and changes the suspension clearance between low temperature dewar and the permanent magnetism track.

2. The testing device for the linear translation dynamic performance of the high-temperature superconducting magnetic levitation system according to claim 1, is characterized in that: the horizontal sliding table module is a single structure or a combined structure of any two or more than two of a mechanical sliding table, a high-temperature superconducting magnetic suspension sliding table, a normally conductive magnetic suspension sliding table, a permanent magnetic suspension sliding table and an air suspension sliding table.

3. The testing device for the linear translation dynamic performance of the high-temperature superconducting magnetic levitation system according to claim 2, is characterized in that: the horizontal sliding table module is a mechanical sliding table, and the mechanical sliding table comprises a horizontal driving motor, a horizontal sliding table supporting seat, a horizontal screw rod and a horizontal sliding block; horizontal slider is along horizontal direction sliding connection on horizontal slip table supporting seat, the both ends of horizontal lead screw are rotated and are connected in the both ends of horizontal slip table supporting seat, and the one end and the horizontal driving motor transmission of horizontal lead screw are connected, horizontal lead screw is connected with the nut seat transmission of horizontal slider bottom, permanent magnetism track pass through the basement and fix on horizontal slider, through horizontal driving motor control permanent magnetism orbital horizontal movement speed and stroke.

4. The testing device for the linear translation dynamic performance of the high-temperature superconducting magnetic levitation system according to claim 1, is characterized in that: the vertical sliding table module comprises a vertical pillar, a vertical moving beam, a vertical screw rod, a secondary commutator, a transverse screw rod, a primary steering gear and a vertical driving motor; the top of the low-temperature Dewar is sequentially connected with a II-shaped connecting piece, a triaxial force sensor and a vertical moving beam; the vertical moving beam is connected to the vertical pillar in a sliding mode in the vertical direction, and the vertical driving motor controls vertical movement of the vertical moving beam sequentially through the primary steering gear, the transverse screw rod, the secondary steering gear and the vertical screw rod.

5. The testing device for the linear translation dynamic performance of the high-temperature superconducting magnetic levitation system according to claim 1, is characterized in that: the low-temperature Dewar refrigerates the high-temperature superconducting block by a single method of injecting liquid nitrogen, low-pressure treatment or refrigerating by a refrigerator or a combination method of any two or more than two.

6. The testing device for the linear translation dynamic performance of the high-temperature superconducting magnetic levitation system according to claim 1, is characterized in that: the high-temperature superconducting block is a single structure or a combined structure of any two or more than two of a block material, a strip material stack or a coil of ReBaCuO, wherein Re is a rare earth element.

7. The testing device for the linear translation dynamic performance of the high-temperature superconducting magnetic levitation system according to claim 1, is characterized in that: the permanent magnet track is a single structure of a permanent magnet, an electromagnet or a superconducting coil magnet or a combined structure of any two or more than two.

8. The testing device for the linear translation dynamic performance of the high-temperature superconducting magnetic levitation system according to claim 7, is characterized in that: the permanent magnet tracks are arranged in a Halbach array structure along the transverse direction by adopting permanent magnets.

9. The measuring method of the high-temperature superconducting magnetic levitation system linear translation dynamic performance testing device adopted by the device of claim 1 is characterized in that: the measuring method comprises the following steps:

1) the low-temperature Dewar is enabled to be opposite to the permanent magnet track, and the low-temperature Dewar is moved to the set initial cooling height through the vertical sliding table module;

2) injecting liquid nitrogen into the low-temperature Dewar until the high-temperature superconducting block is completely in a superconducting state;

3) the low-temperature Dewar is driven to ascend or descend to a set working height through the vertical sliding table module;

4) setting the round trip, times and speed of the horizontal sliding table module to enable the low-temperature Dewar to carry out round trip movement at two ends of the permanent magnet track;

5) the suspension force, the guiding force and the magnetic resistance force in the dynamic operation process of the system are measured through the triaxial force sensor, and data are derived after the test is finished.

Technical Field

The invention relates to the field of dynamic performance testing of a high-temperature superconducting magnetic suspension system, in particular to a device and a method for testing the linear translation dynamic performance of the high-temperature superconducting magnetic suspension system.

Background

In the measurement of the dynamic performance of a high-temperature superconducting magnetic suspension system, a curved-to-straight method is usually adopted due to the limitation of the length and the field of a permanent magnet track, a circular permanent magnet track turntable is used for replacing a linear permanent magnet track, a low-temperature Dewar is arranged above the circular permanent magnet track, and the continuous dynamic operation of the low-temperature Dewar on the permanent magnet track is indirectly simulated through the rotation of the turntable. Because the circular permanent magnet track has a certain curvature and is different from the actual permanent magnet track, the dynamic performance measurement result based on the turntable system cannot truly reflect the magnetic suspension performance of the system under actual linear translation.

Disclosure of Invention

The invention provides a high-temperature superconducting magnetic suspension system linear translation dynamic performance testing device and a measuring method based on the defects of the prior art, and realizes the simulation of the continuous dynamic running effect of the system under the condition of limited length of a testing track, so that the measuring result is closer to the dynamic magnetic suspension characteristic of the actual system.

In order to achieve the purpose, the invention adopts the following technical scheme:

the high-temperature superconducting magnetic suspension system linear translation dynamic performance testing device comprises a base, a horizontal sliding table module, a vertical sliding table module, a triaxial force sensor, a low-temperature Dewar and a permanent magnet track;

the permanent magnet track is connected to the horizontal sliding table module and is driven by the horizontal sliding table module to do linear translation reciprocating motion;

the low temperature dewar is located permanent magnetism orbital top, and the bottom of low temperature dewar is fixed with high temperature superconductive piece, the top of low temperature dewar is passed through triaxial force sensor and is connected with perpendicular slip table module, thereby perpendicular slip table module drives the low temperature dewar and is vertical motion and changes the suspension clearance between low temperature dewar and the permanent magnetism track.

Furthermore, the horizontal sliding table module is a single structure or a combined structure of any two or more than two of a mechanical sliding table, a high-temperature superconducting magnetic floating sliding table, a normally-conductive magnetic floating sliding table, a permanent magnetic floating sliding table and an air floating sliding table.

Furthermore, the horizontal sliding table module is a mechanical sliding table, and the mechanical sliding table comprises a horizontal driving motor, a horizontal sliding table supporting seat, a horizontal screw rod and a horizontal sliding block; horizontal slider is along horizontal direction sliding connection on horizontal slip table supporting seat, the both ends of horizontal lead screw are rotated and are connected in the both ends of horizontal slip table supporting seat, and the one end and the horizontal driving motor transmission of horizontal lead screw are connected, horizontal lead screw is connected with the nut seat transmission of horizontal slider bottom, permanent magnetism track pass through the basement and fix on horizontal slider, through horizontal driving motor control permanent magnetism orbital horizontal movement speed and stroke.

Furthermore, the vertical sliding table module comprises a vertical pillar, a vertical moving beam, a vertical screw rod, a secondary commutator, a transverse screw rod, a primary steering gear and a vertical driving motor; the top of the low-temperature Dewar is sequentially connected with a II-shaped connecting piece, a triaxial force sensor and a vertical moving beam; the vertical moving beam is connected to the vertical pillar in a sliding mode in the vertical direction, and the vertical driving motor controls vertical movement of the vertical moving beam sequentially through the primary steering gear, the transverse screw rod, the secondary steering gear and the vertical screw rod.

Furthermore, the low-temperature Dewar refrigerates the high-temperature superconducting block by injecting liquid nitrogen, low-pressure treatment or a single method of refrigerating by a refrigerator or a combination method of any two or more than two.

Further, the high-temperature superconducting block is a single structure or a combined structure of any two or more of a block material of ReBaCuO (Re is a rare earth element), a strip stack or a coil.

Further, the permanent magnet track is a single structure or a combined structure of any two or more than two of a permanent magnet, an electromagnet or a superconducting coil magnet.

Furthermore, the permanent magnet tracks are arranged in a Halbach array structure along the transverse direction by adopting permanent magnets.

The invention relates to a measuring method of a linear translation dynamic performance testing device of a high-temperature superconducting magnetic suspension system, which comprises the following steps:

1) the low-temperature Dewar is enabled to be opposite to the permanent magnet track, and the low-temperature Dewar is moved to the set initial cooling height through the vertical sliding table module;

2) injecting liquid nitrogen into the low-temperature Dewar until the high-temperature superconducting block is completely in a superconducting state;

3) the low-temperature Dewar is driven to ascend or descend to a set working height through the vertical sliding table module;

4) setting the round trip, times and speed of the horizontal sliding table module to enable the low-temperature Dewar to carry out round trip movement at two ends of the permanent magnet track;

5) the suspension force, the guiding force and the magnetic resistance force in the dynamic operation process of the system are measured through the triaxial force sensor, and data are derived after the test is finished.

Compared with the prior art, the invention has the beneficial effects that: the system can continuously and dynamically operate by linear translation reciprocating motion, and simultaneously solves the problems of limited length of the permanent magnet track circuit and track curvature deviation caused by the circular permanent magnet track circuit, so that the measurement result is closer to the dynamic characteristic of the system under the actual operation condition.

Drawings

The invention is described in further detail below with reference to the accompanying drawings and the detailed description;

FIG. 1 is a transverse view of a measuring device of the present invention;

FIG. 2 is a front view of a measuring device of the present invention;

FIG. 3 is a schematic diagram of the dynamic back and forth operation of the measuring device of the present invention;

names of reference numbers in the drawings:

1-horizontal sliding table module, 101-horizontal driving motor, 102-horizontal sliding table supporting seat, 103-horizontal screw rod, 104-horizontal sliding block, 2-vertical sliding table module, 201-vertical support, 202-vertical moving beam, 203-three-axis force sensor, 204- 'II' -shaped connecting piece, 205-low temperature Dewar, 206-high temperature superconducting block, 207-permanent magnet track, 208-track base, 209-vertical screw rod, 210-secondary steering gear, 211-transverse screw rod, 212-primary steering gear, 213-vertical driving motor, 3-base, Gap-suspension Gap, CH-initial cooling height and WH-working height.

Detailed Description

As shown in fig. 1 and 2, the present invention provides a linear translation dynamic performance testing apparatus for a high temperature superconducting magnetic levitation system, which includes a base 3, a horizontal sliding table module 1, a vertical sliding table module 2, a triaxial force sensor 203, a low temperature dewar 205 and a permanent magnet track 207;

the horizontal sliding table module 1 is arranged on the base 3, and the permanent magnet track 207 is connected to the horizontal sliding table module 1 and is driven by the horizontal sliding table module 1 to do linear translation reciprocating motion;

low temperature dewar 205 locates the top of permanent magnetism track 207, and low temperature dewar 205's bottom is fixed with high temperature superconducting block 206, low temperature dewar 205's top is connected with perpendicular slip table module 2 through "II" shape connecting piece 204, triaxial force transducer 203, thereby perpendicular slip table module 2 drives low temperature dewar 205 and makes vertical motion change the suspension clearance Gap between low temperature dewar 205 and permanent magnetism track 207.

The permanent magnet track 207 is controlled to perform linear translation reciprocating motion through the horizontal sliding table module 1, the continuous motion of the low-temperature Dewar 205 on a straight guide rail is indirectly simulated, and the dynamic characteristics of the suspension force, the guiding force and the magnetic resistance force in the linear translation process of the system are measured through the three-axis force sensor 203.

The horizontal sliding table module 1 is a single structure or a combined structure of any two or more than two of a mechanical sliding table, a high-temperature superconducting magnetic suspension sliding table, a normally conductive magnetic suspension sliding table, a permanent magnetic suspension sliding table and an air suspension sliding table.

In this embodiment, the horizontal sliding table module 1 is a mechanical sliding table, and the mechanical sliding table includes a horizontal driving motor 101, a horizontal sliding table support base 102, a horizontal screw rod 103 and a horizontal sliding block 104; the horizontal sliding block 104 is connected to the horizontal sliding table supporting seat 102 in a sliding mode along the horizontal direction, two ends of the horizontal screw rod 103 are connected to two ends of the horizontal sliding table supporting seat 102 in a rotating mode, one end of the horizontal screw rod 103 is connected with the horizontal driving motor 101 in a transmission mode, the horizontal screw rod 103 is connected with a nut seat at the bottom of the horizontal sliding block 104 in a transmission mode, the permanent magnet track 207 is fixed to the horizontal sliding block 104 through the base 208, and the horizontal movement speed and the horizontal movement stroke of the permanent magnet track 207 are controlled through the horizontal driving motor 101.

The vertical sliding table module 2 comprises a vertical support 201, a vertical moving beam 202, a vertical screw rod 209, a secondary commutator 210, a transverse screw rod 211, a primary steering gear 212 and a vertical driving motor 213; the top of the low-temperature Dewar 205 is sequentially connected with a II-shaped connecting piece 204, a triaxial force sensor 203 and a vertical moving beam 202; the vertical moving beam 202 is connected to the vertical pillar 201 in a sliding manner along the vertical direction, and the vertical driving motor 213 controls the vertical movement of the vertical moving beam 202 sequentially through the primary steering gear 212, the transverse screw rod 211, the secondary steering gear and the vertical screw rod 209.

The low-temperature dewar 205 refrigerates the high-temperature superconducting block 206 by a single method of injecting liquid nitrogen, low-pressure treatment or refrigerating by a refrigerator, or a combination of any two or more methods.

The high-temperature superconducting block is a single structure or a combined structure of any two or more than two of a block material, a strip material stack or a wire (strip) ring of ReBaCuO (Re is a rare earth element).

The permanent magnet track 207 is a single structure of a permanent magnet, an electromagnet or a superconducting wire (tape) coil magnet, or a combined structure of any two or more.

The permanent magnet track 207 is arranged in a Halbach array structure along the transverse direction by adopting permanent magnets.

As shown in fig. 3, the measuring method of the device for testing linear translation dynamic performance of a high-temperature superconducting magnetic levitation system of the invention comprises the following steps:

1) the low-temperature Dewar 205 is enabled to be opposite to the permanent magnet track 207, and the low-temperature Dewar 205 is moved to the set initial cooling height CH through the vertical sliding table module;

2) injecting liquid nitrogen into the low-temperature Dewar 205 until the high-temperature superconducting block 206 is completely in a superconducting state;

3) the low-temperature Dewar 205 is driven to ascend or descend to a set working height WH by the vertical sliding table module;

4) round trip provided with horizontal sliding table modulesNumber of times ofnSpeed, velocityvMaking the low-temperature Dewar 205 move back and forth at the two ends of the permanent magnet track 207;

5) the suspension force, the guiding force and the magnetic resistance force in the dynamic operation process of the system are measured through the triaxial force sensor, and data are derived after the test is finished.

It can be seen that compared with the prior art, the invention has the beneficial effects that: the system can continuously and dynamically operate by linear translation reciprocating motion, and simultaneously solves the problems of limited length of the permanent magnet track circuit and track curvature deviation caused by the circular permanent magnet track circuit, so that the measurement result is closer to the dynamic characteristic of the system under the actual operation condition.

While the invention has been described in connection with the above embodiments, it is to be understood that the invention is not limited to the disclosed embodiments, which are illustrative and not restrictive, and that those skilled in the art will understand that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention, and they should be construed as being included in the following claims and description.