CN112172840B

CN112172840B - Vacuum pipeline system of high-speed magnetic suspension train

Info

Publication number: CN112172840B
Application number: CN201910583115.0A
Authority: CN
Inventors: 毛凯; 张艳清; 李少伟; 刘骁; 李萍; 陈松; 余笔超
Original assignee: Casic Feihang Technology Research Institute of Casia Haiying Mechanical and Electronic Research Institute
Current assignee: Casic Feihang Technology Research Institute of Casia Haiying Mechanical and Electronic Research Institute
Priority date: 2019-07-01
Filing date: 2019-07-01
Publication date: 2022-08-09
Anticipated expiration: 2039-07-01
Also published as: CN112172840A

Abstract

The invention relates to the technical field of rail transit and discloses a vacuum pipeline system of a high-speed magnetic suspension train. The system comprises a train part and a track beam part, wherein the train part comprises a maglev train body and vehicle-mounted superconducting magnets arranged on two inner side walls of the maglev train body, the track beam part comprises a track beam, a propelling suspension unit, a semi-surrounding pipeline support ring and a sealing layer, the propelling suspension unit is arranged on the side wall of the track beam in an embedding mode, the sealing layer is arranged on the outer surface of the propelling suspension unit and the side wall and the upper surface of the track beam, two ends of the semi-surrounding pipeline support ring are connected with the sealing layer part arranged on the upper surface of the track beam to form a sealed pipeline space between the semi-surrounding pipeline support ring and the track beam through the sealing layer part, a vacuum sealed pipeline is formed by vacuumizing the sealed space, and the train part is arranged in the vacuum sealed pipeline. Therefore, the vacuum pipeline can be reduced in volume while providing a vacuum operation environment for the high-speed magnetic suspension train.

Description

Vacuum pipeline system of high-speed magnetic suspension train

Technical Field

The invention relates to the technical field of rail transit, in particular to a vacuum pipeline system of a high-speed magnetic suspension train.

Background

With the continuous progress of science and technology, the use requirements of high-speed magnetic suspension trains in social life are increasing day by day. The high-speed magnetic suspension train is subjected to air resistance in the running process, the influence of the air resistance is continuously increased along with the increase of the train speed, the optimization of the appearance design is difficult to meet the requirement of the train speed, and the method is particularly applied to the field of transonic speed. In order to solve the problem caused by air resistance, a navigation pipeline can be arranged outside a magnetic suspension train system, the air resistance borne by the train in the advancing process is reduced in a vacuumizing mode, and the speed of the train is further improved. The magnetic suspension train has no mechanical friction and no air resistance, so that the running speed of the high-speed magnetic suspension train reaches supersonic speed and feasibility is achieved, and the vacuum pipeline technology is an essential key technology of the ultrahigh-speed magnetic suspension train.

Currently, most vacuum pipes are designed as shown in fig. 1 (fig. 1 is a schematic diagram of a vacuum pipe system of a conventional high-speed magnetic levitation train). In combination with the current high-speed maglev train form (taking the form of a japanese maglev train as an example), the problems mainly exist in the following points:

(1) the problems of heat dissipation and insulation of the stator coil of the linear motor

A high-speed magnetic suspension train propulsion system generally uses a high-temperature superconducting linear synchronous motor, and for providing large thrust of a train, the current of a stator coil in a track beam is large, and the coil body generates heat seriously. In vacuum, the heat dissipation capability of the coil is reduced, and meanwhile, the turn-to-turn insulation capability of the coil is poor, so that the design of a stator coil of a linear motor system is difficult.

(2) Magnetic loss problem of superconducting magnet and vacuum steel pipe

In order to provide larger thrust of the train, the train generally carries a vehicle-mounted superconducting magnet with a larger magnetic field. In order to support the internal and external pressure difference caused by the vacuum pumping of the pipeline, the pipeline material is generally selected from metal materials such as steel and the like. The dynamic superconducting magnet generates eddy current on a steel-cast vacuum pipeline in the movement process, so that loss is generated, and the efficiency of a propulsion system is reduced.

(3) The vacuum pipeline has large volume and large construction cost and vacuumizing cost

As can be seen from FIG. 1, the vacuum pipes designed at present are large in size, and mainly envelope the rail system in which the train runs in a vacuum environment. The larger vacuum envelope environment is less economical from both the construction of the pipeline and the cost of evacuating the pipeline.

Disclosure of Invention

The invention provides a vacuum pipeline system of a high-speed magnetic suspension train, which can solve the problems in the prior art.

The invention provides a vacuum pipeline system of a high-speed maglev train, which comprises a train part and a track beam part, wherein the train part comprises a maglev train body and a vehicle-mounted superconducting magnet arranged on two side walls in the maglev train body, the track beam part comprises a track beam, a propelling and suspending unit, a semi-surrounding pipeline support ring and sealing layers, the propelling and suspending unit is arranged on the side wall of the track beam in an embedding mode, the sealing layers are arranged on the outer surface of the propelling and suspending unit and the side wall and the upper surface of the track beam, two ends of the semi-surrounding pipeline support ring are connected between the semi-surrounding pipeline support ring and the track beam through the sealing layer part arranged on the upper surface of the track beam to form a sealed pipeline space, and the sealed space is vacuumized to form a vacuum sealed pipeline, the train part is arranged in a vacuum sealed pipeline, and the vehicle-mounted superconducting magnet interacts with the propelling suspension unit to provide propelling force and suspension force for the maglev train body.

Preferably, both ends of the semi-surrounding pipe support ring and a sealing layer part arranged on the upper surface of the track beam are fixed on the upper surface of the track beam in a bolt fastening mode, and a sealing ring is arranged between both ends of the semi-surrounding pipe support ring and the sealing layer in contact with the semi-surrounding pipe support ring.

Preferably, the sealing ring is an O-ring.

Preferably, the sealing layer part arranged on the upper surface of the track beam and the two ends of the semi-surrounding pipeline support ring are in a shape of mutually matched tooth grooves.

Preferably, the material of the semi-surrounding pipe support ring is metal.

Preferably, the metal is steel or stainless steel.

Preferably, the sealing layer is a non-magnetically conductive sealing layer.

Preferably, the sealing layer has a thickness in the range of 1-5 mm.

According to the technical scheme, the sealing layers can be arranged on the outer surface of the propelling suspension unit and the side wall and the upper surface of the track beam, the two ends of the semi-surrounding pipeline support ring can be connected with the sealing layer part arranged on the upper surface of the track beam to form a sealed pipeline space between the semi-surrounding pipeline support ring and the track beam, and the sealed space is vacuumized to form a vacuum sealed pipeline. Therefore, the vacuum sealing pipeline can only envelop a high-speed magnetic suspension train, the propelling part (namely, the stator part of the superconducting linear synchronous motor) is isolated outside a vacuum layer, the volume of the vacuum pipeline can be reduced while a vacuum operation environment is provided for the high-speed magnetic suspension train, the construction cost and the vacuumizing cost are reduced, and the high-speed magnetic suspension train vacuum sealing pipeline has good economy.

Drawings

The accompanying drawings, which are included to provide a further understanding of the embodiments of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention. It is obvious that the drawings in the following description are only some embodiments of the invention, and that for a person skilled in the art, other drawings can be derived from them without inventive effort.

FIG. 1 is a schematic diagram of a vacuum piping system of a high-speed magnetic levitation train in the prior art

FIG. 2 is a schematic view of a vacuum piping system for a high speed magnetic levitation train in accordance with an embodiment of the present invention;

FIG. 3 is a schematic diagram of a maglev vehicle body and onboard superconducting magnet according to an embodiment of the present invention;

fig. 4 is a schematic view of a semi-enclosed pipe support ring and a seal layer on the upper surface of a track beam according to an embodiment of the present invention.

Detailed Description

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.

The relative arrangement of the components and steps, the numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate. In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.

Fig. 2 is a schematic diagram of a vacuum piping system of a high-speed magnetic levitation train according to an embodiment of the present invention.

Fig. 3 is a schematic diagram of a maglev vehicle body and a vehicle-mounted superconducting magnet according to an embodiment of the invention.

As shown in fig. 2 and 3, the embodiment of the present invention provides a vacuum piping system for a high-speed maglev train, wherein the system comprises a train portion and a track beam portion, the train portion comprises a maglev train body 1 and an on-board superconducting magnet 2 arranged on two side walls in the maglev train body 1, the track beam portion comprises a track beam 3, a propelling and suspending unit 4, a semi-enclosed pipe support ring 5 and a sealing layer 6, the propelling and suspending unit 4 is arranged on the side wall of the track beam 3 by embedding, the sealing layer 6 is arranged on the outer surface of the propelling and suspending unit 4 and the side wall and the upper surface of the track beam 3, two ends of the semi-enclosed pipe support ring 5 are connected between the semi-enclosed pipe support ring 5 and the track beam 3 by a portion of the sealing layer 6 arranged on the upper surface of the track beam 3 to form a sealed pipe space, and a vacuum sealed pipeline is formed by vacuumizing the sealed space, the train part is arranged in the vacuum sealed pipeline, and the vehicle-mounted superconducting magnet 2 interacts with the propelling and suspending unit 4 to provide propelling force and suspending force for the maglev train body 1.

According to the technical scheme, the sealing layers can be arranged on the outer surface of the propelling suspension unit and the side wall and the upper surface of the track beam, the two ends of the semi-surrounding pipeline support ring can be connected with the sealing layer part arranged on the upper surface of the track beam to form a sealed pipeline space between the semi-surrounding pipeline support ring and the track beam, and the sealed space can be vacuumized to form a vacuum sealed pipeline. Therefore, the vacuum sealing pipeline can only envelop a high-speed magnetic suspension train, the propelling part (namely, the stator part of the superconducting linear synchronous motor) is isolated outside a vacuum layer, the volume of the vacuum pipeline can be reduced while a vacuum operation environment is provided for the high-speed magnetic suspension train, the construction cost and the vacuumizing cost are reduced, and the high-speed magnetic suspension train vacuum sealing pipeline has good economy.

For example, the superconducting vehicle magnet 2 may be a low temperature superconducting magnet, a high temperature superconducting magnet, or any magnet capable of generating a large magnetic field.

The propulsion levitation unit 4 may include linear motor stator coils and levitation coils/levitation plates according to one embodiment of the present invention.

For example, a sealing layer 6 may be disposed on the outer surface of the propulsion levitation unit 4 and the side walls and the upper surface of the track beam 3 in a fitting manner; alternatively, the sealing layer 6 may also be formed integrally with the propulsion levitation unit and then the integrated unit is mounted on the track beam to achieve the arrangement of the sealing layer 6 on the outer surface of the propulsion levitation unit 4 and the side walls and the upper surface of the track beam 3.

In other words, in any case, the sealing layer 6 is closely attached to the outer surface of the propulsion levitation unit 4 and the side walls and the upper surface of the track beam 3 to achieve sealing.

According to an embodiment of the present invention, the semi-enclosed pipe support halo 5 may have a shape satisfying the omega semi-enclosed shape of a high-speed magnetic levitation train.

According to an embodiment of the present invention, both ends of the semi-surrounding pipe support ring 5 and a portion of the sealing layer 6 disposed on the upper surface of the track beam 3 are fixed to the upper surface of the track beam 3 by bolts, and a sealing ring is disposed between both ends of the semi-surrounding pipe support ring 5 and the sealing layer 6 in contact therewith.

The sealing effect can be better improved by arranging the sealing ring.

Wherein, the sealing ring can be an O-shaped sealing ring.

According to an embodiment of the invention, as shown in fig. 4, the part of the seal 6 provided on the upper surface of the track beam 3 (i.e. the part of the seal located on the upper surface of the track beam) and the two ends of the semi-enclosed pipe support ring are in the shape of mutually matching tooth grooves.

That is, the half-surrounding pipeline support ring and the sealing layer binding face are designed into a tooth groove structure to increase the sealing gradient (namely, the sealing reliability can be increased, and meanwhile, the two rings of fixing faces are simultaneously combined with the upper surface of the track beam, so that the fixing is firm and reliable). For example, one or more spline mating surfaces may be used.

According to one embodiment of the invention, the material of the semi-enclosed pipe support ring 5 is metal.

Wherein the metal may be steel or stainless steel.

It will be understood by those skilled in the art that the above description of the material of the semi-enclosed tube support ring 5 is exemplary only and not intended to limit the present invention. For example, any metal material having a load-bearing capacity may be used as the material of the semi-enclosed pipe support ring 5.

In the embodiment of the invention, the semi-surrounding pipeline support ring 5 is contacted with the outer air layer and is subjected to the air pressure action with different internal and external pressure differences, and the metal strength of the semi-surrounding pipeline support ring can be used for ensuring the strength of the whole pipeline by adopting a metal material. And the fixing part is mainly connected to the track beam, so that the fixing is reliable. The magnetic field of the superconducting magnet is mainly in a direction perpendicular to the track beam stator coil. The semi-surrounding pipeline support ring 5 is far away from the superconducting magnet and is not opposite to a main magnetic field generated by the superconducting magnet, and eddy current loss generated on the ring is far smaller than that in the prior art.

According to an embodiment of the invention, said sealing layer 6 is a non-magnetically conductive sealing layer.

The material of the non-magnetic conductive sealing layer can be glass fiber reinforced plastics or carbon fiber.

For example, the sealing layer 6 can be used as a surface cover plate of a stator coil of a linear motor while achieving sealing.

According to an embodiment of the invention, the sealing layer 6 has a thickness in the range of 1-5 mm.

Through the thickness of selecting sealing layer 6 from above-mentioned within range, can not influence linear electric motor's mechanical air gap, can effectively keep apart linear electric motor stator coil part simultaneously, let the stator coil arrange in among the air circumstance, guaranteed its heat-sinking capability and insulating ability.

In the description of the present invention, it is to be understood that the orientation or positional relationship indicated by the orientation words such as "front, rear, upper, lower, left, right", "lateral, vertical, horizontal" and "top, bottom", etc. are usually based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and in the case of not making a reverse description, these orientation words do not indicate and imply that the device or element being referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore, should not be considered as limiting the scope of the present invention; the terms "inner and outer" refer to the inner and outer relative to the profile of the respective component itself.

Spatially relative terms, such as "above … …," "above … …," "above … … surface," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

It should be noted that the terms "first", "second", and the like are used to define the components, and are only used for convenience of distinguishing the corresponding components, and the terms have no special meanings unless otherwise stated, and therefore, the scope of the present invention should not be construed as being limited.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The vacuum pipeline system of the high-speed maglev train is characterized by comprising a train part and a track beam part, wherein the train part comprises a maglev train body (1) and vehicle-mounted superconducting magnets (2) arranged on two inner side walls of the maglev train body (1), the track beam part comprises a track beam (3), a propelling and suspending unit (4), a semi-surrounding pipeline support ring (5) and a sealing layer (6), the propelling and suspending unit (4) is arranged on the side wall of the track beam (3) in an embedding mode, the sealing layer (6) is arranged on the outer surface of the propelling and suspending unit (4) and the side wall and the upper surface of the track beam (3), two ends of the semi-surrounding pipeline support ring (5) are connected between the semi-surrounding pipeline support ring (5) and the track beam (3) through the sealing layer (6) partially arranged on the upper surface of the track beam (3) to form a sealed pipeline space The train part is arranged in the vacuum sealed pipeline, the vehicle-mounted superconducting magnet (2) and the propelling suspension unit (4) interact to provide propelling force and suspension force for the magnetic suspension car body (1), two ends of the semi-surrounding pipeline support ring (5) and a sealing layer (6) part arranged on the upper surface of the track beam (3) are fixed on the upper surface of the track beam (3) in a combining manner through bolts, sealing rings are arranged between two ends of the semi-surrounding pipeline support ring (5) and the sealing layer (6) in contact with the semi-surrounding pipeline support ring, the sealing rings are O-shaped sealing rings, and the sealing layer (6) part arranged on the upper surface of the track beam (3) and two ends of the semi-surrounding pipeline support ring (5) are in a tooth groove shape matched with each other, the semi-surrounding pipeline support ring (5) is in an omega semi-surrounding shape.

2. System according to claim 1, characterized in that the material of the semi-enclosed pipe support ring (5) is metal.

3. The system of claim 2, wherein the metal is steel or stainless steel.

4. A system according to claim 3, characterized in that the sealing layer (6) is a non-magnetic conducting sealing layer.

5. System according to claim 4, characterized in that the thickness of the sealing layer (6) is in the range of 1-5 mm.