CN112238873B - Natural liquid cooling heat conduction pipe and natural liquid cooling split vacuum pipeline structure with same - Google Patents
Natural liquid cooling heat conduction pipe and natural liquid cooling split vacuum pipeline structure with same Download PDFInfo
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- CN112238873B CN112238873B CN201910638809.XA CN201910638809A CN112238873B CN 112238873 B CN112238873 B CN 112238873B CN 201910638809 A CN201910638809 A CN 201910638809A CN 112238873 B CN112238873 B CN 112238873B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61B—RAILWAY SYSTEMS; EQUIPMENT THEREFOR NOT OTHERWISE PROVIDED FOR
- B61B13/00—Other railway systems
- B61B13/10—Tunnel systems
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L13/00—Electric propulsion for monorail vehicles, suspension vehicles or rack railways; Magnetic suspension or levitation for vehicles
- B60L13/04—Magnetic suspension or levitation for vehicles
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/08—Cooling; Ventilating
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L2200/00—Type of vehicles
- B60L2200/26—Rail vehicles
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Abstract
The invention provides a natural liquid cooling heat pipe and a natural liquid cooling split vacuum pipeline structure with the same, wherein the natural liquid cooling heat pipe comprises a cooling section and a heat absorption section, the cooling section and the heat absorption section are connected end to form a closed pipeline, the closed pipeline is provided with a liquid cavity, cooling liquid is filled in the liquid cavity, the heat absorption section is arranged in the vacuum pipeline structure and is close to an electric coil in the vacuum pipeline structure, and the cooling section is arranged outside the vacuum pipeline structure; the natural liquid cooling heat pipe absorbs heat dissipated by the electric coil through cooling liquid in the heat absorption section, and the cooling liquid absorbing the heat moves up to the cooling section due to the fact that the density of the cooling liquid becomes small so as to dissipate the absorbed heat into air for cooling and drive the cooling liquid in the cooling section to enter the heat absorption section for absorbing the heat to complete the process of natural circulation liquid cooling. By applying the technical scheme of the invention, the technical problems of overhigh temperature rise of the electric coil, high line construction cost, large occupied area and high construction difficulty in the prior art are solved.
Description
Technical Field
The invention relates to the technical field of vacuum pipeline magnetic suspension traffic systems, in particular to a natural liquid cooling heat conduction pipe and a natural liquid cooling split vacuum pipeline structure with the same.
Background
In order to reduce the running resistance, the wheels and the steel rails of the traditional railway traffic are eliminated, the levitation force and the guiding force of the vehicle are provided by using the magnetic levitation technology, and the traction force and the braking force are provided for the vehicle by using the linear motor. And in order to reduce the air resistance of the train running at high speed, the train is sealed in the pipeline, and the pipeline is vacuumized.
Compared with the conventional wheel track system, the magnetic suspension system needs to lay coils capable of providing suspension force, guiding force, propelling force and braking force on the track, the electric coils can generate large current when in operation, so that the coils can generate heat, and particularly the coils for providing the propelling and braking actions can generate more heat due to longer electrifying time. In the vacuum pipeline, the air density is very low (the vacuum pipeline is not completely vacuum, and thin air exists), the heat dissipation effect is very poor, and the working performance and the service life of the vacuum pipeline are affected due to overhigh temperature of the coil when the vacuum pipeline is used for a long time.
The vacuum pipelines in the prior art do not enter the engineering implementation and application stage worldwide, and from the disclosed information, all the vacuum pipelines do not consider how to radiate heat of the coil, and the heat generated by the coil is accumulated to a higher temperature when the vacuum pipelines are used for a long time, so that the insulation performance of the coil is influenced, and the service life of the coil is shortened.
In addition, the cross section of the existing vacuum pipeline is of a complete circular pipe structure, and particularly as shown in fig. 6, the vacuum pipeline of the circular pipe structure is not beneficial to improving the vertical rigidity of the cross section, the occupied area in the horizontal direction is large, the pipeline erection difficulty is large, and the construction investment cost of the vacuum pipeline is high.
From the above, the vacuum pipe of the prior art has several technical disadvantages.
First, the vacuum pipes do not consider how to dissipate heat of the coil, and heat generated by the coil is accumulated to a higher temperature when the vacuum pipes are used for a long time, so that the insulation performance of the coil is affected and the service life of the coil is shortened.
Secondly, the strength properties of concrete materials and steel materials are not fully exploited. The action load on the pipeline when a vehicle runs in the vacuum pipeline is mainly vertical, so that the section of the pipeline is required to have high bending rigidity in the vertical direction, the horizontal direction does not need too high rigidity, and the bending capacities of the whole circular steel pipe in the vertical direction and the horizontal direction are the same and unreasonable. In addition, the section geometry of the concrete part cannot be designed too high due to the limitation of the round pipe, more materials are distributed in the horizontal direction, the vertical rigidity of the pipeline is insufficient, the horizontal rigidity is excessive, and the strength performance of the materials is not fully utilized.
Thirdly, construction at elevated bridge sections is difficult. When the vacuum pipeline is used, the vacuum pipeline is made into a section with the length of dozens of meters, the vacuum pipeline is installed on a viaduct by using bridging equipment, the upper side of the pipeline of the whole circular pipe structure is arc-shaped, only one layer of steel plate is arranged, and the dead weight of a bridge girder erection machine cannot be borne, so that the engineering construction difficulty of the vacuum pipeline is high, and the problem of high construction cost is caused.
Fourth, the line built by such pipelines occupies a large area. Because the transverse and vertical dimensions of the circular tube are the same, the diameter of the circular tube must be increased in order to increase the bending vertical rigidity, and the increase of the transverse dimension increases the occupied area of the vacuum pipeline circuit, which causes the increase of the line construction cost.
Disclosure of Invention
The invention provides a natural liquid cooling heat conduction pipe and a natural liquid cooling split vacuum pipeline structure with the same, and the natural liquid cooling heat conduction pipe can solve the technical problems of overhigh temperature rise of an electric coil, high line construction cost, large occupied area and high construction difficulty in the prior art.
According to an aspect of the present invention, there is provided a natural liquid cooling heat pipe, including a cooling section and a heat absorbing section, the cooling section and the heat absorbing section being connected end to form a closed pipeline, the closed pipeline having a liquid cavity, the liquid cavity being filled with a cooling liquid, the heat absorbing section being disposed inside a vacuum pipeline structure and near an electric coil disposed inside the vacuum pipeline structure, the cooling section being disposed outside the vacuum pipeline structure; the natural liquid cooling heat pipe absorbs heat dissipated by the electric coil through cooling liquid in the heat absorption section, and the cooling liquid absorbing the heat moves up to the cooling section due to the fact that the density of the cooling liquid becomes small so as to dissipate the absorbed heat into air for cooling and drive the cooling liquid in the cooling section to enter the heat absorption section for absorbing the heat to complete the process of natural circulation liquid cooling.
Furthermore, the cooling section comprises a plurality of cooling sections which are sequentially connected and arranged in a snake shape; the heat absorption section comprises a plurality of heat absorption subsections, and the plurality of heat absorption subsections are connected in sequence and are arranged in a snake shape.
Further, the natural liquid cooling heat pipe is made of a non-conductive material.
According to another aspect of the present invention, there is provided a natural liquid cooling type split vacuum pipe structure, which includes a first structure, a second structure and a natural liquid cooling heat pipe as described above, the natural liquid cooling heat pipe is disposed in the second structure and is adjacent to an electric coil located in the second structure, the second structure is used for providing a running track for a vehicle, the second structure is disposed at a lower portion of the first structure, the first structure and the second structure are connected to form a pipe body, and the pipe body is used for providing an airtight vacuum pipe environment.
Furthermore, the natural liquid cooling type split vacuum pipeline structure also comprises a heat conducting element, wherein the heat conducting element is arranged between the electric coil and the natural liquid cooling heat conducting pipe; the second structure is made of reinforced concrete and heat-conducting aggregate.
Further, the material of the first structure comprises steel, and the material of the second structure comprises reinforced concrete.
Further, the natural liquid cooling type split vacuum pipeline structure further comprises a sealing element, the sealing element is arranged at the connecting position of the first structure and the second structure, and the sealing element is used for achieving sealing connection between the first structure and the second structure.
Furthermore, the natural liquid cooling type split vacuum pipeline structure further comprises reinforcing rib plates, the reinforcing rib plates are welded outside the pipeline body, and the reinforcing rib plates are used for improving the strength of the pipeline body and increasing the heat dissipation area of the split vacuum pipeline structure.
Further, the natural liquid cooling type split vacuum pipeline structure also comprises an airtight coating, and the airtight coating is coated outside the second structure; the material of the second structure also comprises an air-tight agent.
Furthermore, the natural liquid cooling split vacuum pipeline structure comprises a plurality of first natural liquid cooling heat conduction pipes and a plurality of second natural liquid cooling heat conduction pipes, the structure of the first structure is an arc arch structure, the structure of the second structure is a U-shaped structure, the second structure comprises a first side wall and a second side wall, a plurality of first electric coils are continuously arranged in the first side wall, and the plurality of first natural liquid cooling heat conduction pipes and the plurality of first electric coils are arranged in a one-to-one correspondence manner; and a plurality of second electric coils are continuously arranged in the second side wall, and the plurality of second electric coils are respectively arranged in one-to-one correspondence with the plurality of first electric coils and the plurality of second natural liquid cooling heat conduction pipes.
By applying the technical scheme of the invention, the natural liquid cooling heat conduction pipe is provided with the cooling section and the heat absorption section, the heat absorption section is arranged in the vacuum pipeline structure and is close to the electric coil in the vacuum pipeline structure, when in use, the electric coil generates heat, the temperature of the liquid at the heat absorption section close to the electric coil is increased, the density is reduced, the mass in unit volume is lightened and flows upwards, the liquid absorbing the heat enters the cooling section from the heat absorption section to dissipate the absorbed heat into the air for cooling, the low-temperature liquid in the cooling section is supplemented into the heat absorption section for absorbing the heat, therefore, a natural circulation liquid cooling process is formed, heat of the electronic coil can be taken away, the temperature of the electronic coil is reduced, the reduction of the temperature of the electronic coil is beneficial to improving the conductivity of the coil and the insulating property of the insulating layer of the coil, and the service life of the coil is prolonged.
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 and 2 illustrate cross-sectional views of a natural liquid-cooled split vacuum pipe structure provided according to a first embodiment of the present invention;
FIG. 3 illustrates a left side view of the natural liquid cooled split vacuum piping structure provided in FIG. 1;
FIG. 4 illustrates a front view of a natural liquid cooled split vacuum piping structure provided in accordance with a second embodiment of the present invention;
FIG. 5 illustrates a left side view of the natural liquid cooled split vacuum piping structure provided in FIG. 4;
fig. 6 shows a cross-sectional view of a vacuum duct provided in the prior art.
Wherein the figures include the following reference numerals:
10. cooling the heat conduction pipe by natural liquid; 11. a cooling section; 111a, a first cooling section; 111b, a second cooling section; 111. cooling and segmenting; 12. a heat absorption section; 121. heat absorption segmentation; 121a, a first heat absorption section; 121b, a second heat absorbing segment; 20. a first structure; 30. a second structure; 31. a first side wall; 311. a first electric coil; 32. a second side wall; 321. a second electric coil; 40. a heat conducting element; 50. a seal member; 60. reinforcing rib plates; 70. a hermetic coating; 101. a first natural liquid cooling heat pipe; 102. the second natural liquid cooling heat conduction pipe; 80. a connecting bolt; 90. a thermally conductive aggregate.
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.
As shown in fig. 1 to 5, according to an embodiment of the present invention, a natural liquid cooling heat pipe is provided, where the natural liquid cooling heat pipe 10 includes a cooling section 11 and a heat absorbing section 12, the cooling section 11 is connected with the heat absorbing section 12 end to form a closed pipeline, the closed pipeline has a liquid cavity, the liquid cavity is filled with a cooling liquid, the heat absorbing section 12 is disposed in a vacuum pipeline structure and is close to an electric coil located in the vacuum pipeline structure, and the cooling section 11 is disposed outside the vacuum pipeline structure; the natural liquid cooling heat pipe absorbs heat dissipated by the electric coil through cooling liquid in the heat absorption section 12, and the cooling liquid absorbing the heat moves up to the cooling section 11 due to the fact that the density of the cooling liquid becomes small so as to dissipate the absorbed heat into air for cooling and drive the cooling liquid in the cooling section 11 to enter the heat absorption section 12 for absorbing heat to complete the natural circulation liquid cooling process.
By applying the configuration mode, the natural liquid cooling heat conduction pipe is provided with the cooling section and the heat absorption section, the heat absorption section is arranged in the vacuum pipeline structure and is close to the electric coil positioned in the vacuum pipeline structure, when in use, the electric coil generates heat, the temperature of the liquid at the heat absorption section close to the electric coil is increased, the density is reduced, the mass in unit volume is lightened and flows upwards, the liquid absorbing the heat enters the cooling section from the heat absorption section to dissipate the absorbed heat into the air for cooling, the low-temperature liquid in the cooling section is supplemented into the heat absorption section for absorbing the heat, the process forms a natural circulation liquid cooling process, can take away the heat of the electronic coil, reduces the temperature of the electronic coil, and the reduction of the temperature of the electronic coil is beneficial to improving the conductivity of the coil, improving the insulating property of the insulating layer of the coil and prolonging the service life of the coil. In the present invention, water may be used as the cooling liquid in consideration of the cost of the cooling liquid and the ease of acquisition.
As a first embodiment of the present invention, as shown in fig. 1 to 3, when viewed from a side view, the natural liquid cooling heat pipe has an 8-shaped bent structure, the cooling section includes a first cooling section 111a and a second cooling section 111b, the heat absorbing section includes a first heat absorbing section 121a and a second heat absorbing section 121b, the first cooling section 111a and the first heat absorbing section 121a are both disposed along a vertical direction, the second cooling section 111b is disposed at an angle to the first cooling section 111a, the second heat absorbing section 121b is disposed at an angle to the first heat absorbing section 121a, the second heat absorbing section 121b, the first heat absorbing section 121a, the second cooling section 111b and the first cooling section 111a are sequentially connected end to form an 8-shaped structure, wherein the second heat absorbing section 121b arranged obliquely is disposed near the electric coil, and the oblique arrangement is used for increasing a contact area of the natural liquid cooling heat pipe and the electric coil, the heat dissipation effect is enhanced. A plurality of natural liquid cooling heat pipes are sequentially, uniformly and continuously arranged along the length direction of the vacuum pipeline structure and used for guiding out heat generated by the plurality of electric coils.
Further, in the present invention, as a second embodiment of the present invention, in order to improve the heat dissipation efficiency of the natural liquid cooling heat conduction pipe, as shown in fig. 4 and 5, the cooling section 11 may be configured to include a plurality of cooling sections 111, and the plurality of cooling sections 111 are connected in sequence and arranged in a serpentine shape; the heat absorbing section 12 comprises a plurality of heat absorbing sections 121, and the plurality of heat absorbing sections 121 are connected in sequence and arranged in a serpentine shape. As shown in fig. 5, the cooling section 11 includes four cooling sections 111, the four cooling sections 111 are all slightly inclined horizontal sections, and the four cooling sections 111 are connected in sequence and arranged in a serpentine shape; the heat absorbing section 12 comprises four heat absorbing sections 121, the four heat absorbing sections 121 are sequentially connected and arranged in a serpentine shape, and the four heat absorbing sections 121 are connected with the four cooling sections 111. The arrangement mode can increase the heat conduction area and improve the heat dissipation efficiency of the natural liquid cooling heat conduction pipe. As another embodiment of the present invention, the natural liquid cooling heat pipe may also have another structure, as long as the heat dissipated by the electric coil can be conducted out, which is not limited herein.
Further, in the present invention, in order to avoid the formation of an eddy current in the natural liquid cooling heat pipe when the maglev train is in operation, the natural liquid cooling heat pipe may be configured to be made of a non-conductive material. As other embodiments of the invention, the eddy current effect can be weakened by reducing the diameter of the natural liquid cooling heat conduction pipe.
According to another aspect of the present invention, there is provided a natural liquid cooling type split vacuum pipe structure, which includes a first structure 20, a second structure 30, and the natural liquid cooling heat pipe 10 as described above, the natural liquid cooling heat pipe 10 is disposed in the second structure 30 and near an electric coil located in the second structure 30, the second structure 30 is used for providing a running track for a vehicle, the second structure 30 is disposed at a lower portion of the first structure 20, and the first structure 20 and the second structure 30 are connected to form a pipe body for providing an airtight vacuum pipe environment.
By applying the configuration mode, the natural liquid cooling type split vacuum pipeline structure comprises the natural liquid cooling heat conduction pipe, and the natural liquid cooling heat conduction pipe can lead out heat generated by the electric coil, so that the temperature of the electric coil is reduced, the reduction of the temperature is favorable for improving the electric conductivity of the coil and the insulating property of an insulating layer of the coil, and the service life of the coil is prolonged. Therefore, the natural liquid cooling heat conduction pipe is applied to the natural liquid cooling split vacuum pipeline structure, and the working performance of the vacuum pipeline structure can be greatly improved. Furthermore, this nature liquid cooling formula components of a whole that can function independently vacuum pipeline structure is through setting up the pipeline body into the components of a whole that can function independently, and first structure and second structure are connected in order to be used for providing gas tightness vacuum pipeline environment, and this kind of mode makes pipeline structure's height dimension and width dimension can freely design, and each other does not influence, can not increase the area of horizontal size and circuit when effectively increasing the vertical rigidity of pipeline. In addition, during construction of the elevated road section, the natural liquid cooling type split vacuum pipeline structure provided by the invention is a split pipeline, so that the second structure positioned at the lower part can form a working line of a bridge girder erection machine during construction, and the first structures at the upper part are installed in place one by using the bridge girder erection machine after the second structure positioned at the lower part of the vacuum pipeline structure is installed, so that the engineering construction is very convenient, and the line construction cost is low.
In addition, in the present invention, in order to further enhance the heat conduction effect, the natural liquid cooling type split vacuum pipe structure may be configured to further include a heat conduction element 40, the heat conduction element 40 being disposed between the electric coil and the natural liquid cooling heat pipe 10; the material of the second structure 30 includes reinforced concrete and heat conductive aggregate. In this configuration, the heat dissipated by the electric coil can be transferred to the natural liquid cooling heat pipe through the heat conducting element 40 with good heat conducting performance, and the heat can be dissipated through the natural liquid cooling heat pipe. As an embodiment of the present invention, a heat conductive silicone grease or a heat conductive silicone sheet may be used as the heat conductive element 40, and in addition, an aggregate having a better heat conductivity, such as an iron oxide aggregate, may be used in the reinforced concrete near the electric coil.
Further, in the present invention, in order to be suitable for industrial applications and to improve the service life of the vacuum duct, the material of the first structure 20 may be configured to include steel, and the material of the second structure 30 may include reinforced concrete. As a specific embodiment of the invention, the load applied to the pipeline when the vehicle runs in the vacuum pipeline is mainly vertical, so that the section of the pipeline is required to have higher bending rigidity in the vertical direction, and excessive rigidity is not required in the horizontal direction. The natural liquid cooling type split vacuum pipeline structure provided by the invention is a split pipeline, so that the height and width of the pipeline structure can be freely designed, and based on the design, the bending rigidity of the pipeline in the vertical direction can be increased according to the rigidity requirement of a vehicle on the pipeline in actual operation, so that more concrete materials are distributed in the vertical direction, and the strength performance of the materials is fully utilized.
Further, in the present invention, the first structure 20 and the second structure 30 may be connected using bolts. Specifically, as shown in fig. 2, the upper steel first structure 20 and the lower concrete second structure 30 are connected by a plurality of connecting bolts 80, before assembly, the bolts 80 are embedded in the lower concrete second structure 30, the distance between the bolts is tested according to actual requirements, holes are drilled in the upper steel first structure 20 according to the distance between the bolts, gaps between the bolts 80 and the bolt holes are controlled, the connecting strength of the upper portion and the lower portion of the vacuum pipeline is enhanced, and the bearing integrity of the vacuum pipeline can be improved.
In addition, in the present invention, in order to ensure the working performance of the natural liquid cooling type split vacuum pipe structure and prevent air leakage of the vacuum pipe structure during operation, the natural liquid cooling type split vacuum pipe structure may be configured to further include a sealing member 50, the sealing member 50 being disposed at a connection position of the first structure 20 and the second structure 30, the sealing member 50 being used to achieve a sealing connection between the first structure 20 and the second structure 30.
By applying the configuration mode, the sealing element is arranged at the connecting position of the first structure and the second structure, so that air leakage can be effectively prevented when the vacuum pipeline is vacuumized and a subsequent vehicle runs in the vacuum pipeline, and the working performance of the vacuum pipeline is improved. As an embodiment of the present invention, a rubber strip may be used as the sealing member 50, in such a manner that, when the vacuum is drawn in the vacuum pipe, the upper rigid first structure 20 is tightly pressed against the lower reinforced concrete second structure 30 by the sealing rubber strip structure under the action of several thousand tons of air pressure, thereby achieving a very good sealing effect. Other low stiffness, hermetic materials may be used as the seal 50 in other embodiments of the invention.
Further, in the present invention, in order to improve the strength of the vacuum pipe structure and increase the heat dissipation area of the natural liquid cooling type split vacuum pipe structure, the natural liquid cooling type split vacuum pipe structure may be configured to further include a reinforcing rib plate 60, the reinforcing rib plate 60 is welded to the outside of the pipe body, and the reinforcing rib plate 60 is used to improve the strength of the pipe body and increase the heat dissipation area of the split vacuum pipe structure. As a specific embodiment of the present invention, a steel plate may be used as the reinforcing rib plate, and the reinforcing rib plate is welded to the pipe body.
In the present invention, in order to further improve the strength of the vacuum pipe structure and increase the heat dissipation area of the natural liquid cooling type split vacuum pipe structure, the natural liquid cooling type split vacuum pipe structure may be configured to include a plurality of reinforcing ribs 60, and the plurality of reinforcing ribs 60 may be welded to the pipe body at intervals along the length direction of the pipe body. As an embodiment of the present invention, a steel plate may be used as the reinforcing rib, and as shown in fig. 3, the natural liquid cooling type split vacuum pipeline structure includes a plurality of reinforcing ribs welded to the pipeline body at regular intervals along the length direction of the pipeline body. The mode can save the steel consumption, can increase the rigidity and the intensity of the natural liquid cooling type split vacuum pipeline structure, and in addition, the reinforcing rib plate structure can increase the heat dissipation area of the pipeline and play a role of a heat dissipation grid.
Further, in the present invention, in order to further improve the sealing performance of the vacuum pipe, the natural liquid-cooled split vacuum pipe structure may be configured to further include an airtight coating 70, the airtight coating 70 being coated outside the second structure 30; the material of the second structure 30 further includes an air-tight agent. In an embodiment of the present invention, the material of the airtight coating 70 includes asphalt, iron sheet or steel plate, and the material of the second structure mainly includes concrete, and a certain amount of airtight agent is added in the concrete to enhance the airtightness. As other embodiments of the present invention, other materials having an airtight function may be used as the airtight coating layer 70.
In addition, in the present invention, as shown in fig. 1, in order to ensure uniformity of heat dissipation when a vehicle rapidly runs in a vacuum pipe, the natural liquid cooling split vacuum pipe structure includes a plurality of first natural liquid cooling heat pipes 101 and a plurality of second natural liquid cooling heat pipes 102, a structure of the first structure 20 is an arc-shaped structure, a structure of the second structure 30 is a U-shaped structure, the second structure 30 includes a first sidewall 31 and a second sidewall 32, a plurality of first electric coils 311 are continuously disposed in the first sidewall 31, and the plurality of first natural liquid cooling heat pipes 101 and the plurality of first electric coils 311 are disposed in a one-to-one correspondence; the second side walls 32 are provided with a plurality of second electric coils 321, and the plurality of second electric coils 321 are respectively disposed corresponding to the plurality of first electric coils 311 and the plurality of second natural liquid cooling heat pipes 102.
In order to further understand the present invention, the structure of the natural liquid cooling type split vacuum pipeline of the present invention will be described in detail with reference to fig. 1 to 3.
As shown in fig. 1 to 3, according to an embodiment of the present invention, there is provided a natural liquid cooling type split vacuum pipe structure including a first structure 20, a second structure 30, a natural liquid cooling heat pipe 10, a heat conductive element 40, a sealing member 50, a reinforcing rib 60, and an airtight coating 70, wherein the first structure 20 is made of steel, the second structure 30 is made of concrete, a sealing strip is used as the sealing member 50, a steel plate is used as the reinforcing rib, and the first structure 20 and the second structure 30 are connected to each other by a connecting bolt 80.
The steel first structure 20 on upper portion mainly functions in providing airtight seal for the vacuum pipe structure, adopts the steel sheet panel beating to become the domes, then along the vertical welding multichannel deep floor of pipeline, has saved the steel quantity like this and has increased the rigidity and the intensity of structure simultaneously, and these deep floor structures have still increased the heat radiating area of pipeline in addition, play the effect of radiator grille.
The lower concrete second structure 30 serves two purposes, namely as a track for the vehicle to travel and providing a hermetic seal for the vacuum duct structure. Different from the concrete structure on the common high-speed railway, the sealing requirement is added to the concrete, so a certain amount of air-tight agent is added into the concrete, an air-tight coating 70 is laid and sprayed on the outer side of the concrete structure, and the air-tight coating 70 only needs to be made of materials with air-tight effect, such as asphalt, iron sheet or steel plate.
The first structure 20 of steel on upper portion and the second structure 30 of concrete system of lower part adopt a plurality of connecting bolts 80 to connect, and bolt 80 is pre-buried in the concrete structure of lower part, according to the interval size of actual test bolt, drills in the steel construction of upper portion, and the control bolt is with the clearance of bolt hole, and the joint rigidity of lower part in the reinforcing has improved the integrative nature of the bearing of pipeline.
The sealing strip is made of low-rigidity and sealing materials such as rubber, after the interior of the pipeline is vacuumized, the steel structure at the upper part is tightly pressed on the reinforced concrete structure at the lower part through the sealing strip structure under the action of thousands of tons of air pressure, and a very good sealing effect can be achieved.
In this embodiment, water is used as the cooling liquid, and a natural water-cooling heat conduction pipe is embedded in the lower concrete second structure 30, the natural water-cooling heat conduction pipe is a closed pipeline formed by the cooling section 11 and the heat absorption section 12, the pipeline is filled with water, the heat absorption section of the heat conduction pipe is arranged close to the electric coil, and the cooling section of the heat conduction pipe is arranged in the air.
When the electric coil generates heat, the temperature of the water in the heat absorption section 12 rises and flows upwards, the water enters the cooling section 11 from the upper part of the heat absorption section 12, and the lower part of the heat absorption section 12 is supplemented with the water with lower temperature from the cooling section 11, so that a natural circulation process is formed, the heat of the electric coil is taken away, the temperature of the coil is reduced, the reduction of the temperature is favorable for improving the conductivity of the coil and the insulating property of an insulating layer of the coil, and the service life of the coil is prolonged.
In order to avoid the formation of electric eddy currents in the water-cooling pipelines when the magnetic levitation train runs, the water-cooling heat conduction pipes can be made of non-conductive materials, and the eddy current effect can be weakened by reducing the pipe diameter of the water-cooling pipes.
In order to further enhance the heat conduction effect, a heat conduction element 40, such as a heat conduction silicone grease or a heat conduction silicone sheet, can be arranged between the water-cooling heat conduction pipe and the electric coil, and a heat conduction aggregate 90, such as an iron oxide aggregate, can also be added to the reinforced concrete near the electric coil.
The water-cooling heat conduction pipe has various structural forms, fig. 5 shows another form, and the natural water-cooling heat conduction pipe is basically characterized in that a heat absorption section and a cooling section jointly form a closed pipeline, the pipeline is filled with water, the heat absorption section is embedded in concrete and close to a coil, and the cooling section is placed in air. The heat generated by the electric coil is led into the air by utilizing the heat generated by the electric coil to form the circulation of water in the heat conducting pipe.
The vacuum pipeline structure of the present invention is formed by connecting two parts, i.e., a first structure made of steel at the upper part and a second structure made of concrete at the lower part, and the upper and lower structures are connected by a connecting bolt 80 to form a whole. The height and width of the vacuum pipeline structure can be freely designed without influencing each other, and the vertical rigidity of the pipeline is effectively increased without increasing the transverse size and the floor area of the pipeline.
In addition, the vacuum pipeline structure is very convenient to construct in the elevated road section, the lower concrete second structures are sequentially hoisted to the bridge pier by using the bridge girder erection machine, the lower concrete second structures form a working line of the bridge girder erection machine, the upper steel first structures are installed in place one by using the bridge girder erection machine after the lower concrete second structures are installed, and the construction difficulty is reduced and the construction cost is reduced.
In summary, the present invention provides a natural liquid cooling heat pipe and a natural liquid cooling split vacuum pipe structure, which have the following advantages compared with the prior art.
Firstly, the split vacuum pipeline structure provided by the invention solves the problem of temperature rise caused by heating of the electric coil in the pipeline by introducing the natural liquid cooling heat conduction pipe, improves the performance of the electric coil, including resistance reduction and insulation performance improvement, and prolongs the service life of the coil.
Secondly, the height and width of the split vacuum pipeline structure can be freely designed, the height of the pipeline can be increased according to the requirement, the vertical rigidity of the pipeline is improved, the transverse size is controlled, the use of steel and concrete materials is reduced, and the floor area of a line is reduced.
Thirdly, the split type vacuum pipeline structure provided by the invention is very convenient for construction of elevated road sections, firstly, the concrete structures at the lower part are sequentially hoisted to the bridge piers by using the bridge girder erection machine, the concrete structures at the lower part form a running working line of the bridge girder erection machine, and after the concrete structures at the lower part are installed, the bridge girder erection machine is used for installing the upper parts in place one by one, so that the construction difficulty and the construction cost are reduced.
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 … …," "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 (7)
1. The natural liquid cooling type split vacuum pipeline structure is characterized by comprising a first structure (20), a second structure (30) and a natural liquid cooling heat pipe (10), wherein the natural liquid cooling heat pipe (10) is arranged in the second structure (30) and is close to an electric coil in the second structure (30), the second structure (30) is used for providing a running track for a vehicle, the second structure (30) is arranged at the lower part of the first structure (20), the first structure (20) and the second structure (30) are connected to form a pipeline body, and the pipeline body is used for providing an airtight vacuum pipeline environment; the natural liquid cooling heat conduction pipe (10) comprises a cooling section (11) and a heat absorption section (12), the cooling section (11) and the heat absorption section (12) are connected end to form a closed pipeline, the closed pipeline is provided with a liquid cavity, cooling liquid is filled in the liquid cavity, the heat absorption section (12) is arranged in the vacuum pipeline structure and is close to an electric coil in the vacuum pipeline structure, and the cooling section (11) is arranged outside the vacuum pipeline structure; the natural liquid cooling heat pipe absorbs heat emitted by the electric coil through cooling liquid in the heat absorption section (12), and the cooling liquid absorbing the heat moves upwards to the cooling section (11) due to the fact that the density of the cooling liquid is reduced so as to dissipate the absorbed heat into air for cooling and drive the cooling liquid in the cooling section (11) to enter the heat absorption section (12) for absorbing the heat to complete a natural circulation liquid cooling process; the cooling section (11) comprises a plurality of cooling sections (111), and the plurality of cooling sections (111) are sequentially connected and arranged in a snake shape; the heat absorption section (12) comprises a plurality of heat absorption sections (121), and the plurality of heat absorption sections (121) are sequentially connected and arranged in a snake shape; the natural liquid cooling split vacuum pipeline structure comprises a plurality of first natural liquid cooling heat pipes (101) and a plurality of second natural liquid cooling heat pipes (102), the structure of the first structure (20) is an arc arch structure, the structure of the second structure (30) is a U-shaped structure, the second structure (30) comprises a first side wall (31) and a second side wall (32), a plurality of first electric coils (311) are continuously arranged in the first side wall (31), and the plurality of first natural liquid cooling heat pipes (101) and the plurality of first electric coils (311) are arranged in a one-to-one correspondence manner; a plurality of second electric coils (321) are continuously arranged in the second side wall (32), and the plurality of second electric coils (321) are respectively arranged corresponding to the plurality of first electric coils (311) and the plurality of second natural liquid cooling heat conduction pipes (102) one by one.
2. The natural liquid cooled split vacuum pipe structure according to claim 1, further comprising a heat conducting element (40), said heat conducting element (40) being arranged between said electrical coil and said natural liquid cooled heat pipe (10); the second structure (30) is made of reinforced concrete and heat-conducting aggregate.
3. A natural liquid cooled split vacuum pipe structure according to claim 1, wherein the material of the first structure (20) comprises steel and the material of the second structure (30) comprises reinforced concrete.
4. A natural liquid cooled split vacuum pipe structure according to claim 1, further comprising a seal (50), said seal (50) being arranged at the connection position of said first structure (20) and said second structure (30), said seal (50) being used for achieving a sealed connection between said first structure (20) and said second structure (30).
5. A natural liquid cooled split vacuum pipe structure according to any of claims 1 to 4, further comprising a stiffener plate (60), the stiffener plate (60) being welded to the outside of the pipe body, the stiffener plate (60) being used to increase the strength of the pipe body and to increase the heat dissipation area of the split vacuum pipe structure.
6. The natural liquid cooled split vacuum pipe structure as claimed in claim 5, further comprising an airtight coating (70), the airtight coating (70) being coated outside the second structure (30); the material of the second structure (30) further comprises an air-tight agent.
7. The natural liquid cooled split vacuum piping structure as claimed in claim 1, wherein the natural liquid cooled heat pipe is made of a non-conductive material.
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| CN201910638809.XA CN112238873B (en) | 2019-07-16 | 2019-07-16 | Natural liquid cooling heat conduction pipe and natural liquid cooling split vacuum pipeline structure with same |
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| DE2446408A1 (en) * | 1974-09-28 | 1976-04-08 | Krauss Maffei Ag | Magnetic hover vehicle support and guiding system - with auxiliary cooled hollow conductor coils near vehicle mounted electromagnet field coils |
| JP2002118018A (en) * | 2000-10-06 | 2002-04-19 | Hitachi Ltd | Ground coil for magnetically levitated railway |
| CN1876959B (en) * | 2005-06-08 | 2011-08-03 | 上海磁浮交通工程技术研究中心 | Method and apparatus for cooling levitating magnet of low-speed magnetic levitation vehicle |
| CN100360337C (en) * | 2005-07-29 | 2008-01-09 | 上海磁浮交通工程技术研究中心 | Cooling method of suspended magnetic iron structure of magnetic suspension vehicle and its device |
| CN1323863C (en) * | 2005-07-29 | 2007-07-04 | 上海磁浮交通工程技术研究中心 | Suspended magnetic iron structure of magnetic suspension vehicle and its production mehtod |
| CN201199017Y (en) * | 2008-05-05 | 2009-02-25 | 厦门市三安光电科技有限公司 | Water cooling LED street lamp |
| CN201215646Y (en) * | 2008-06-25 | 2009-04-01 | 尹全权 | Automatic fluid supply type water cooling self-cycling heat radiator for electronic elements |
| CN103904804A (en) * | 2012-12-28 | 2014-07-02 | 上海微电子装备有限公司 | Coil unit for machine winding and planar motor using the coil unit |
| CN104417569B (en) * | 2013-09-09 | 2018-11-09 | 大连奇想科技有限公司 | Transparent vacuum pipeline |
| CN104009586B (en) * | 2014-06-09 | 2016-08-24 | 清华大学 | A kind of motor cooling radiator structure |
| RU2681763C1 (en) * | 2018-01-19 | 2019-03-12 | Открытое Акционерное Общество "Российские Железные Дороги" | Cooling system of the vacuum pipeline for magnet-levitation vehicles |
| CN108372864B (en) * | 2018-01-22 | 2020-10-30 | 武汉理工大学 | Vacuum pipeline train magnetic suspension EMS/EDS hybrid bearing structure |
| CN208216700U (en) * | 2018-04-26 | 2018-12-11 | 中国航天科工飞航技术研究院（中国航天海鹰机电技术研究院） | Pipeline transportation tool line system |
| CN208311653U (en) * | 2018-06-06 | 2019-01-01 | 北京九州动脉隧道技术有限公司 | A kind of transport under water uses pipeline configuration |
| CN210554796U (en) * | 2019-07-16 | 2020-05-19 | 中国航天科工飞航技术研究院（中国航天海鹰机电技术研究院） | Natural liquid cooling heat conduction pipe and natural liquid cooling split vacuum pipeline structure with same |
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