Superconducting suspension propulsion integrated system

Abstract

The invention relates to the technical field of magnetic suspension, and discloses a superconducting suspension propulsion integrated system. The system comprises a track beam, a sliding rail, a superconducting magnet, a suspension sensing unit and a propelling unit, the track beam is of a U-shaped groove structure, a track is arranged on the upper portion of the track beam, the superconducting magnet is arranged at the bottom of the sledge, and the suspension sensing unit and the propelling unit are arranged on the inner walls of the left side and the right side of a U-shaped groove. The suspension sensing unit interacts with the superconducting magnet to generate a suspension force and a guiding force, the propelling unit interacts with the superconducting magnet to generate a propelling force, and in the test process, after the sledge moves on the sliding rail under the action of the propelling force and accelerates to a first preset speed, the test piece on the sledge is unlocked and separated from the sledge; the sledge car is decelerated and recovered under the action of braking force, and the test piece continues to move under the inertia action until the test piece touches the target. The system can provide larger thrust and higher thrust quality, and reliable ultra-high-speed propulsion is achieved.

Description

Technical Field

[0001] The present invention relates to the field of magnetic suspension technology, and in particular to a superconducting suspension propulsion integrated system. Background Art

[0002] The existing rocket sled technology uses rockets as the power source, and the thrust fluctuation is large, which cannot meet the application requirements of high thrust quality. For example, the Holloman high-speed test track test line in the United States has a high degree of similarity with the ultra-high-speed rocket sled in many application scenarios. The Holloman test line uses superconducting electric suspension technology, and the suspension and guidance system uses double-slot guide rails. Each slot is mainly composed of two superconducting magnets and four suspension induction copper plates; the propulsion system uses rocket boosters, which provide large thrust fluctuations and are unstable.

[0003] Based on this, a propulsion system that can provide high thrust quality is needed. Summary of the invention

[0004] The present invention provides a superconducting suspension propulsion integrated system, which can solve the technical problems in the prior art.

[0005] The present invention provides a superconducting suspension propulsion integrated system, wherein the system comprises a track beam, a slide rail, a superconducting magnet, a suspension induction unit and a propulsion unit, the track beam adopts a U-shaped groove structure, the track is arranged on the upper part of the track beam, the superconducting magnet is arranged on the bottom of a sled, the suspension induction unit and the propulsion unit are both arranged on the inner walls on the left and right sides of the U-shaped groove, the suspension induction unit interacts with the superconducting magnet to generate a suspension force and a guiding force, and the propulsion unit interacts with the superconducting magnet to generate a propulsion force. During the test, the sled moves on the slide rail under the action of the propulsion force and accelerates to a first predetermined speed, then the test piece on the sled is unlocked and separated from the sled, the sled is decelerated and recovered under the action of the braking force, and the test piece continues to move under the action of inertia until it hits the target.

[0006] Preferably, the sled vehicle comprises an electromagnetic sled and a test sled connected to each other, the superconducting magnet is arranged at the bottom of the electromagnetic sled, and the test piece is arranged on the test sled. During the test, the electromagnetic sled pushes the test sled to accelerate to a first predetermined speed under the action of thrust, and then the test sled is unlocked and separated from the electromagnetic sled. The electromagnetic sled is decelerated and recovered under the action of braking force. The test sled continues to move under the action of inertia and is unlocked and separated from the test piece after decelerating to a second predetermined speed, and the test piece continues to move until it hits the target.

[0007] Preferably, the suspension sensing unit is a suspension sensing plate.

[0008] Preferably, the suspension induction plate is a copper plate.

[0009] Preferably, the propulsion unit includes a plurality of propulsion coils, which are symmetrically arranged on the inner walls on the left and right sides of the U-shaped slot. The m propulsion coils along the movement direction serve as a unit stator, and adjacent unit stators along the movement direction are connected in series, and the corresponding unit stators on the inner walls on the left and right sides of the U-shaped slot are connected in parallel.

[0010] Preferably, the propulsion unit is powered by a segmented power supply method, and each power supply segment includes a plurality of unit stators connected in series.

[0011] Preferably, the superconducting magnet comprises a cryogenic container and a superconducting coil disposed in the cryogenic container, and magnetic poles N and magnetic poles S formed by the superconducting coil are alternately arranged.

[0012] Through the above technical solution, a suspension propulsion integrated topology can be adopted, and the mover part shares a set of superconducting magnets, which has the advantages of compact structure topology, light magnet mass, high magnetic field utilization, high economy, etc., and can provide greater thrust and higher thrust quality, and achieve reliable ultra-high-speed propulsion. In addition, the skid can be effectively recovered and reused, which improves the utilization rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The included drawings are used to provide a further understanding of the embodiments of the present invention, which constitute a part of the specification, are used to illustrate the embodiments of the present invention, and together with the text description, explain the principles of the present invention. Obviously, the drawings in the following description are only some embodiments of the present invention, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0014] Figure 1 A schematic diagram of the overall structure of a superconducting suspension propulsion integrated system according to an embodiment of the present invention is shown;

[0015] Figure 2 A schematic diagram of the structure of a skid vehicle according to an embodiment of the present invention is shown;

[0016] Figure 3 A longitudinal cross-sectional view of a skid car circuit according to an embodiment of the present invention is shown;

[0017] Figure 4 A schematic diagram of a skid steer experiment process according to an embodiment of the present invention is shown;

[0018] Figure 5 A schematic diagram of a superconducting synchronous linear motor according to an embodiment of the present invention is shown;

[0019] Figure 6 A schematic diagram of the magnetic levitation load reduction principle according to an embodiment of the present invention is shown. DETAILED DESCRIPTION

[0020] It should be noted that, in the absence of conflict, the embodiments in this application and the features in the embodiments can be combined with each other. The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is by no means intended to limit the present invention and its application or use. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0021] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0022] Unless otherwise specifically stated, the relative arrangement of the parts and steps described in these embodiments, numerical expressions and numerical values ​​do not limit the scope of the present invention. At the same time, it should be understood that, for ease of description, the sizes of the various parts shown in the accompanying drawings are not drawn according to the actual proportional relationship. The technology, method and equipment known to ordinary technicians in the relevant field may not be discussed in detail, but in appropriate cases, the technology, method and equipment should be regarded as a part of the authorization specification. In all examples shown and discussed here, any specific value should be interpreted as being merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, so once a certain item is defined in an accompanying drawing, it does not need to be further discussed in subsequent drawings.

[0023] Figure 1 A schematic diagram of the overall structure of a superconducting suspension propulsion integrated system according to an embodiment of the present invention is shown.

[0024] like Figure 1As shown, an embodiment of the present invention provides a superconducting suspension propulsion integrated system, wherein the system includes a track beam 1, a slide rail 2, a superconducting magnet 3, a suspension induction unit 4 and a propulsion unit 5, the track beam 1 adopts a U-shaped groove structure, the track 2 is arranged on the upper part of the track beam 1, the superconducting magnet 3 is arranged at the bottom of the sled 6, the suspension induction unit 4 and the propulsion unit 5 are both arranged on the inner walls on the left and right sides of the U-shaped groove (the suspension induction unit and the propulsion unit are arranged on the inner walls on the left and right sides of the U-shaped groove, the suspension induction units on both sides are symmetrically arranged, and the propulsion units on both sides are also symmetrically arranged), the suspension induction unit 4 interacts with the superconducting magnet 3 to generate suspension force and guiding force, and the propulsion unit 5 interacts with the superconducting magnet 4 to generate propulsion force. During the test, the sled 6 moves on the slide rail 2 under the action of the propulsion force and accelerates to a first predetermined speed, and then the test piece 7 on the sled 6 is unlocked and separated from the sled 6, and the sled 6 is decelerated and recovered under the action of the braking force, and the test piece 7 continues to move under the action of inertia until it hits the target (collides with the target).

[0025] The track beam adopts a U-shaped groove design, and the equipment is installed inside the U-shaped groove, which can make the skid car and track system smaller. The magnetic fields on both sides of the superconducting magnet interact with the suspension induction unit and the propulsion unit to generate suspension force and propulsion force, making full use of the magnetic field of the superconducting magnet.

[0026] Through the above technical solution, a suspension propulsion integrated topology can be adopted, and the mover part shares a set of superconducting magnets, which has the advantages of compact structure topology, light magnet mass, high magnetic field utilization, high economy, etc., and can provide greater thrust and higher thrust quality, and achieve reliable ultra-high-speed propulsion. In addition, the skid can be effectively recovered and reused, which improves the utilization rate.

[0027] Figure 2 A schematic diagram of the skid structure according to an embodiment of the present invention is shown.

[0028] According to an embodiment of the present invention, Figure 2 As shown, the sled 6 includes an electromagnetic sled 61 and a test sled 62 that are connected to each other. The superconducting magnet 3 is arranged at the bottom of the electromagnetic sled 61, and the test piece 7 is arranged on the test sled 62. During the test, the electromagnetic sled 61 pushes the test sled 62 to accelerate to a first predetermined speed under the action of thrust, and then the test sled 62 is unlocked and separated from the electromagnetic sled 61. The electromagnetic sled 61 is decelerated and recovered under the action of braking force. The test sled 62 continues to move under the action of inertia and is unlocked and separated from the test piece 7 after decelerating to a second predetermined speed. The test piece 7 continues to move until it hits the target.

[0029] Among them, both the electromagnetic sled and the test sled fly on the slide rail (that is, they move in the form of slide rail constraints). As a device that fully utilizes the safe, controllable and reusable characteristics of electromagnetic force to carry out high-speed tests, the electromagnetic sled has a high frequency of use and a wide range of tests, and must have sufficient reliability.

[0030] More specifically, refer to Figure 3 and Figure 4 The test sled is continuously accelerated in the acceleration section under the thrust of the electromagnetic sled. After reaching the idle section, the test sled is unlocked and separated from the electromagnetic sled. The electromagnetic sled is decelerated and recovered along the straight braking section under the action of the braking force (eddy current braking) (for example, it stops at a position about 20m away from the end of the track). The test sled flies along the straight braking section by inertia (flying with the slide rail restraint). After reaching the end of the braking section, the test piece is separated from the main structure of the test sled, and the test piece lands on the target after flying a short distance. In order to avoid collision between the main structure of the test sled and the test piece, a curved track can be set at the end of the braking section. The main structure of the test sled sinks along the curved track and hits the end protection device to achieve recovery.

[0031] This ensures that the test piece can be quickly targeted after separation.

[0032] According to an embodiment of the present invention, the suspension sensing unit 4 is a suspension sensing plate.

[0033] The use of an induction plate type suspension induction unit can effectively achieve the magnetic suspension load reduction effect.

[0034] According to an embodiment of the present invention, the suspension sensing plate is a copper plate.

[0035] Those skilled in the art should understand that the above copper plate is merely exemplary and is not intended to limit the present invention.

[0036] In the present invention, the propulsion coil and the superconducting magnet together form a superconducting synchronous linear motor, which is a long primary and short secondary structure. The primary is fixed on the ground as a stator, and the secondary moves with the vehicle body as a mover. The magnetic field generated by the motor mover (superconducting magnet) interacts with the traveling wave magnetic field generated by the motor stator (primary winding) to generate an electromagnetic driving force, driving the motor mover to move linearly. Among them, the motor stator can adopt a double-layer staggered centralized winding structure, such as Figure 5 shown.

[0037] This setting can significantly reduce thrust fluctuation and improve thrust quality.

[0038] According to one embodiment of the present invention, the propulsion unit 5 includes a plurality of propulsion coils, which are symmetrically arranged on the inner walls on the left and right sides of the U-shaped slot. The m propulsion coils along the movement direction serve as a unit stator, and the adjacent unit stators along the movement direction are connected in series, and the corresponding unit stators on the inner walls on the left and right sides of the U-shaped slot are connected in parallel.

[0039] For example, the motor stator can be an m-phase concentrated winding, including 2 rows of propulsion coils, 1 row of propulsion coils on each of the left and right inner walls. The m coils along the direction of motion are regarded as a unit stator, the corresponding phases of the unit stators along the direction of motion are connected in series, and the corresponding phases of the propulsion coils on the left and right inner walls are connected in parallel. The 2 rows of propulsion coils on the left and right inner walls are arranged symmetrically.

[0040] According to an embodiment of the present invention, the propulsion unit 5 is powered by a segmented power supply method, and each power supply segment includes a plurality of unit stators connected in series.

[0041] That is, the motor stator adopts a segmented power supply form, each segment is composed of a certain number of unit stators connected in series, and the stators on the left and right sides are powered independently.

[0042] The propulsion part adopts a superconducting long-stator synchronous linear motor with high thrust density. The long-stator segmented power supply can meet the demand for long-distance propulsion. The present invention can accelerate a ton-level test piece to a maximum speed of ≮340m / s.

[0043] According to an embodiment of the present invention, the superconducting magnet 3 includes a cryogenic container and a superconducting coil disposed in the cryogenic container, and the magnetic poles N and the magnetic poles S formed by the superconducting coil are alternately arranged.

[0044] In the case of two columns of superconducting magnets, the magnetic poles corresponding to the two columns of superconducting magnets have the same polarity.

[0045] Reference below Figure 6 The magnetic levitation load reduction of the present invention is described. After the skid car starts to move due to the traction of the motor, a relative movement occurs between the superconducting magnet installed on the skid car and the suspension induction plate. Due to the existence of the eddy current effect, the suspension induction plate generates an electromagnetic repulsion force on the superconducting magnet. Since the electromagnetic repulsion force has a vertical component, it can offset part of the gravity, reduce the contact force between the skid car and the slide rail, and thus reduce the friction resistance between the skid car and the slide rail.

[0046] In addition, there is a horizontal component of the electromagnetic repulsion. When the high-speed moving superconducting coil of the mover is in the middle position of the left and right suspension induction plates, the eddy current magnetic fields generated by the magnetic field of the mover's superconducting magnet in the left and right suspension induction plates are equal, so the guiding forces just cancel each other out; when the mover deviates from the middle position, the eddy current magnetic fields generated by the magnetic field of the mover's superconducting magnet in the left and right suspension induction plates are unequal in size and have the same direction. The electromagnetic force generated by the eddy current in the suspension induction plate when the mover is close to the mover repels the mover, and the electromagnetic force generated by the current in the suspension induction plate when the mover is away from the mover attracts the mover. Under the action of the electromagnetic forces on both sides, the mover is pushed toward the middle position.

[0047] It can be seen that the weight reduction effect of the suspension part of the present invention is obvious, and the suspension electromagnetic force is large. When the skid drives the magnet to deviate from the guide, the system exhibits a guide restoring force, which can ensure the stability of the superconducting magnet's guide direction.

[0048] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings. They are only for the convenience of describing the present invention and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the devices or elements referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of the present invention. The directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0049] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0050] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. If not otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the present invention.

[0051] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A superconducting suspension propulsion integrated system, It is characterized in that The system comprises a track beam (1), a slide rail (2), a superconducting magnet (3), a suspension induction unit (4) and a propulsion unit (5); the track beam (1) adopts a U-shaped groove structure; the track (2) is arranged on the upper part of the track beam (1); the superconducting magnet (3) is arranged on the bottom of a sled (6); the suspension induction unit (4) and the propulsion unit (5) are both arranged on the inner walls on the left and right sides of the U-shaped groove; the suspension induction unit (4) interacts with the superconducting magnet (3) to generate a suspension force and a guiding force; the propulsion unit (5) interacts with the superconducting magnet (4) to generate a propulsion force; during a test, the sled (6) moves on the slide rail (2) under the action of the propulsion force and accelerates to a first predetermined speed; then the test piece (7) on the sled (6) is unlocked and separated from the sled (6); the sled (6) is decelerated and recovered under the action of a braking force; and the test piece (7) continues to move under the action of inertia until it hits a target.

2. The system according to claim 1, It is characterized in that The sled vehicle (6) comprises an electromagnetic sled (61) and a test sled (62) which are connected to each other. The superconducting magnet (3) is arranged at the bottom of the electromagnetic sled (61), and the test piece (7) is arranged on the test sled (62). During the test, the electromagnetic sled (61) pushes the test sled (62) to accelerate to a first predetermined speed under the action of thrust, and then the test sled (62) is unlocked and separated from the electromagnetic sled (61). The electromagnetic sled is decelerated and recovered under the action of braking force. The test sled (62) continues to move under the action of inertia and is unlocked and separated from the test piece (7) after decelerating to a second predetermined speed. The test piece (7) continues to move until it hits a target.

3. The system according to claim 1, It is characterized in that The suspension sensing unit (4) is a suspension sensing plate.

4. The system according to claim 3, It is characterized in that The suspension induction plate is a copper plate.

5. The system according to claim 4, It is characterized in that The propulsion unit (5) comprises a plurality of propulsion coils which are symmetrically arranged on the inner walls on the left and right sides of the U-shaped slot, wherein the m propulsion coils along the moving direction serve as a unit stator, and adjacent unit stators along the moving direction are connected in series, and corresponding unit stators on the inner walls on the left and right sides of the U-shaped slot are connected in parallel.

6. The system according to claim 5, It is characterized in that The propulsion unit (5) is powered by a segmented power supply method, and each power supply segment includes a plurality of unit stators connected in series.

7. The system according to claim 6, It is characterized in that The superconducting magnet (3) comprises a cryogenic container and a superconducting coil arranged in the cryogenic container, wherein magnetic poles N and magnetic poles S formed by the superconducting coil are arranged alternately.

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