Vacuum pipeline inter-beam sealing structure and vacuum pipeline having the same

Abstract

The present invention provides a vacuum pipe beam sealing structure and a vacuum pipe having the same, the sealing structure comprises a first sealing fitting, a second sealing fitting and a sealing member, the first sealing fitting is fixedly arranged at the end of the first vacuum pipe beam along the periphery of the first vacuum pipe beam end, the second sealing fitting is fixedly arranged at the end of the second vacuum pipe beam along the periphery of the second vacuum pipe beam end, a wedge-shaped sealing groove is formed between the first sealing fitting and the second sealing fitting, the sealing member is arranged in the wedge-shaped sealing groove, and the sealing member is tightly fitted on the first sealing fitting and the second sealing fitting constituting the wedge-shaped sealing groove under the action of atmospheric pressure to realize a sealed connection between the first vacuum pipe beam and the second vacuum pipe beam. The technical solution of the present invention is applied to solve the technical problems in the prior art that the sealing structure is high in cost and difficult to disassemble.

Description

Technical Field

[0001] The invention relates to the technical field of vacuum pipeline transportation systems, and in particular to a vacuum pipeline inter-beam sealing structure and a vacuum pipeline having the same. Background Art

[0002] For high-speed public transportation, whether airplanes or high-speed trains, the main resistance to their operation is air resistance. Air resistance limits the increase in speed and also causes huge energy consumption. In order to increase the operating speed, people have long proposed the concept of vacuum pipes, placing the vehicle's running track in a closed pipe and using vacuum equipment to evacuate the pipe.

[0003] Considering the feasibility of engineering construction and the characteristics of thermal expansion and contraction of the structure, the vacuum pipeline must be designed to be composed of several sections of pipeline beams, and a sealing structure is designed between the pipeline beams to achieve the sealing between the sections of pipeline beams. The vacuum degree in the pipeline (the industry defines vacuum degree as atmospheric pressure minus the actual air pressure in the pipeline) is related to the type and capacity of the vacuum equipment, and also to the sealing performance of the vacuum pipeline itself. Obviously, the better the sealing performance of the pipeline itself, the higher the vacuum degree that can be achieved, and the lower the energy consumption required to maintain the vacuum.

[0004] For vacuum pipelines, we must not only pursue the sealing performance of their sealing structure, but also pay attention to the construction cost of the vacuum pipeline and the rescuability in the event of a train failure in the pipeline.

[0005] At present, vacuum pipeline transportation has not been implemented and applied in the world. Domestic and foreign related materials introduce the overall large circular tube pipeline beam (such as Fig.10 and Fig.11 As shown), and a corrugated pipe-beam sealing structure between the pipe beams, such as Fig.12 and Fig.13 shown.

[0006] This bellows sealing structure connects two adjacent pipe beams by welding to achieve sealing. Fig.14 As shown, the thermal expansion and contraction between the pipe beam sections are achieved by relying on the elastic deformation of the bellows.

[0007] The existing corrugated tube-shaped pipeline beam sealing structure connects two adjacent pipeline beams by welding, which can achieve good sealing performance of the vacuum pipeline, but it also has the following technical disadvantages.

[0008] First, the cost is high. The minimum size of the vacuum pipe used for transportation is 5m to 6m. The price of such a large-sized corrugated pipe is relatively high, which raises the construction cost of the vacuum pipe.

[0009] Second, this sealing structure welds the various sections of the pipeline beams together. When an accident occurs while a train is running in the pipeline and rescue is required, it is difficult to dismantle the pipeline and to rescue the accident vehicle. Summary of the invention

[0010] The present invention provides a vacuum pipe inter-beam sealing structure and a vacuum pipe having the same, which can solve the technical problems in the prior art that the sealing structure is high in cost and difficult to disassemble.

[0011] According to one aspect of the present invention, a sealing structure between vacuum pipe beams is provided, and the sealing structure is used to achieve a sealed connection between a first vacuum pipe beam and a second adjacent vacuum pipe beam, and the sealing structure comprises: a first sealing fitting, which is fixedly arranged at the end of the first vacuum pipe beam along the periphery of the end of the first vacuum pipe beam; a second sealing fitting, which is fixedly arranged at the end of the second vacuum pipe beam along the periphery of the end of the second vacuum pipe beam, and a wedge-shaped sealing groove is formed between the first sealing fitting and the second sealing fitting; a sealing member, which is arranged in the wedge-shaped sealing groove, and the sealing member is tightly fitted on the first sealing fitting and the second sealing fitting constituting the wedge-shaped sealing groove under the action of atmospheric pressure to achieve a sealed connection between the first vacuum pipe beam and the second vacuum pipe beam.

[0012] Furthermore, the sealing structure also includes a sealing layer, which is tightly fitted on the sealing component, the first sealing fitting and the second sealing fitting. The sealing layer is used to isolate the sealing component from the external atmosphere and improve the sealing performance between the first vacuum pipe beam and the second vacuum pipe beam.

[0013] Furthermore, the sealing structure between the vacuum pipe beams also includes a first reinforcing rib and / or a second reinforcing rib, the first reinforcing rib is respectively connected to the first sealing fitting and the first vacuum pipe beam, the first reinforcing rib is used to improve the stiffness and strength of the first sealing fitting, the second reinforcing rib is respectively connected to the second sealing fitting and the second vacuum pipe beam, the second reinforcing rib is used to improve the stiffness and strength of the second sealing fitting.

[0014] Furthermore, the sealing structure between the vacuum duct beams includes a plurality of first reinforcing ribs and a plurality of second reinforcing ribs, wherein the plurality of first reinforcing ribs are evenly spaced along the periphery of the end of the first vacuum duct beam between the first sealing fitting and the first vacuum duct beam, and the plurality of second reinforcing ribs are evenly spaced along the periphery of the end of the second vacuum duct beam between the second sealing fitting and the second vacuum duct beam.

[0015] Furthermore, the sealing element includes silicone rubber or fluororubber.

[0016] According to another aspect of the present invention, a vacuum pipe is provided, which includes a first vacuum pipe beam, a second vacuum pipe beam and a sealing structure between the vacuum pipe beams. The sealing structure between the vacuum pipe beams is the sealing structure between the vacuum pipe beams as described above. The first vacuum pipe beam is sealedly connected to the second vacuum pipe beam through the sealing structure between the vacuum pipe beams.

[0017] Furthermore, the first vacuum pipe beam includes a first pipe upper structure and a first track beam, the first track beam is arranged at the lower part of the first pipe upper structure, and the first pipe upper structure is connected to the first track beam to form a first pipe body; the second vacuum pipe beam includes a second pipe upper structure and a second track beam, the second track beam is arranged at the lower part of the second pipe upper structure, and the second pipe upper structure is connected to the second track beam to form a second pipe body; the first track beam and the second track beam are both used to provide a running track for the vehicle, and the first pipe body and the second pipe body are both used to provide an airtight vacuum pipe environment.

[0018] Further, the first sealing fitting includes a first upper sealing fitting element and a first track beam sealing fitting element, the first upper sealing fitting element is fixedly arranged on the end periphery of the first pipe upper structure, and the first track beam sealing fitting element is fixedly arranged on the end periphery of the first track beam; the second sealing fitting includes a second upper sealing fitting element and a second track beam sealing fitting element, the second upper sealing fitting element is fixedly arranged on the end periphery of the second pipe upper structure, and the second track beam sealing fitting element is fixedly arranged on the end periphery of the second track beam.

[0019] Furthermore, the materials of the first pipeline superstructure and the second pipeline superstructure both include steel, and the materials of the first track beam and the second track beam both include concrete.

[0020] Furthermore, the first vacuum pipe beam also includes a first sealing connector, which is arranged at the connection position between the first pipe superstructure and the first track beam, and the first sealing connector is used to achieve a sealed connection between the first pipe superstructure and the first track beam; the second vacuum pipe beam also includes a second sealing connector, which is arranged at the connection position between the second pipe superstructure and the second track beam, and the second sealing connector is used to achieve a sealed connection between the second pipe superstructure and the second track beam.

[0021] By applying the technical solution of the present invention, a sealing structure between vacuum pipe beams is provided, which can utilize the air pressure difference between the inside and outside of the vacuum pipe to achieve sealing between the pipe beams, thereby ensuring the sealing effect of the vacuum pipe. The sealing structure only needs to respectively set a first sealing fitting and a second sealing fitting at the ends of two adjacent vacuum pipe beams, and a wedge-shaped sealing groove is formed between the first sealing fitting and the second sealing fitting. A sealing member is inserted into the wedge-shaped sealing groove, and the sealing member tightly fits on the first sealing fitting and the second sealing fitting constituting the wedge-shaped sealing groove under the action of atmospheric pressure to achieve sealing between the two vacuum pipe beams, thereby greatly reducing the sealing cost of the joints between the vacuum pipe beams. Furthermore, the sealing structure between the pipe beams provided by the present invention is very easy to disassemble, and it is only necessary to restore the vacuum pipe to an atmospheric pressure state, and then take out the sealing members in the wedge-shaped sealing grooves at the ends of two adjacent sections of the vacuum pipe beams. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] 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.

[0023] Figure 1 A cross-sectional view showing the installation of a vacuum duct beam sealing structure provided in a specific embodiment of the present invention at the ends of a first vacuum duct beam and a second vacuum duct beam;

[0024] Figure 2 A partial cross-sectional view of the installation of the vacuum duct beam sealing structure provided in a specific embodiment of the present invention at the ends of the first vacuum duct beam and the second vacuum duct beam is shown;

[0025] Figure 3 A schematic diagram of the structure of the vacuum pipe beam sealing structure provided by a specific embodiment of the present invention under the action of atmospheric pressure is shown;

[0026] Figure 4 A schematic cross-sectional view of a first vacuum pipe beam (a second vacuum pipe beam) provided according to a specific embodiment of the present invention is shown;

[0027] Figure 5 A front view of a first vacuum duct beam (a second vacuum duct beam) provided with a first sealing fitting (a second sealing fitting) according to a specific embodiment of the present invention is shown;

[0028] Figure 6 Shows Figure 5A partial cross-sectional view at AA of a first vacuum duct beam (second vacuum duct beam) provided with a first sealing fitting (second sealing fitting);

[0029] Figure 7 Shows Figure 5 A partial cross-sectional view at BB of a first vacuum duct beam (second vacuum duct beam) provided with a first sealing fitting (second sealing fitting);

[0030] Figure 8 A side view of a first vacuum duct beam (a second vacuum duct beam) provided with a first sealing fitting (a second sealing fitting) at both ends according to a specific embodiment of the present invention is shown;

[0031] Fig. 9 A side cross-sectional view of a vacuum duct beam sealing structure between a first vacuum duct beam and a second vacuum duct beam provided according to a specific embodiment of the present invention is shown;

[0032] Fig.10 The figure shows a front view of a pipeline beam in the shape of an overall large circular tube provided in the prior art;

[0033] Fig.11 Shows Fig.10 A side view of the pipe beam provided in;

[0034] Fig.12 A front view of a corrugated tube-shaped pipe beam sealing structure provided in the prior art is shown;

[0035] Fig.13 Shows Fig.12 A side view of a corrugated tubular pipe inter-beam sealing structure provided in;

[0036] Fig.14 The schematic diagram of the structure of the corrugated tube-shaped inter-sealing structure installed between two sections of pipeline beams provided in the prior art is shown.

[0037] The above drawings include the following reference numerals:

[0038] 10. First sealing fitting; 11. First upper sealing fitting element; 12. First track beam sealing fitting element; 20. Second sealing fitting; 21. Second upper sealing fitting element; 22. Second track beam sealing fitting element; 30. Sealing member; 40. Sealing adhesive layer; 50. First reinforcing rib; 60. Second reinforcing rib; 100. Vacuum pipe beam sealing structure; 100a. Wedge-shaped sealing groove; 200. First vacuum pipe beam; 210. First pipe upper structure; 220. First track beam; 230. First sealing connector; 300. Second vacuum pipe beam; 310. Second pipe upper structure; 320. Second track beam; 330. Second sealing connector; 400. Bolt. DETAILED DESCRIPTION

[0039] 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.

[0040] 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.

[0041] Unless otherwise specifically stated, the relative arrangement, numerical expressions and numerical values ​​of the parts and steps set forth in these embodiments do not limit the scope of the present invention. Meanwhile, 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 those of ordinary skill in the relevant art may not be discussed in detail, but in appropriate cases, the technology, method and equipment should be considered as a part of the 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, and therefore, once a certain item is defined in an accompanying drawing, it does not need to be further discussed in subsequent drawings.

[0042] like Figures 1 to 9 As shown, according to a specific embodiment of the present invention, a sealing structure between vacuum pipe beams is provided, and the sealing structure is used to realize a sealed connection between an adjacent first vacuum pipe beam and a second vacuum pipe beam. The sealing structure includes a first sealing fitting 10, a second sealing fitting 20 and a sealing member 30. The first sealing fitting 10 is fixedly arranged at the end of the first vacuum pipe beam along the periphery of the first vacuum pipe beam end, and the second sealing fitting 20 is fixedly arranged at the end of the second vacuum pipe beam along the periphery of the second vacuum pipe beam end. A wedge-shaped sealing groove 100a is formed between the first sealing fitting 10 and the second sealing fitting 20, and the sealing member 30 is arranged in the wedge-shaped sealing groove 100a. Under the action of atmospheric pressure, the sealing member 30 is tightly fitted on the first sealing fitting 10 and the second sealing fitting 20 constituting the wedge-shaped sealing groove 100a to realize a sealed connection between the first vacuum pipe beam and the second vacuum pipe beam.

[0043] By applying this configuration, a sealing structure between vacuum pipe beams is provided, which can realize the sealing between pipe beams by utilizing the air pressure difference inside and outside the vacuum pipe, thereby ensuring the sealing effect of the vacuum pipe; the sealing structure only needs to respectively set a first sealing fitting and a second sealing fitting at the ends of two adjacent vacuum pipe beams, and a wedge-shaped sealing groove is formed between the first sealing fitting and the second sealing fitting, and a sealing member is inserted into the wedge-shaped sealing groove. Under the action of atmospheric pressure, the sealing member tightly fits on the first sealing fitting and the second sealing fitting constituting the wedge-shaped sealing groove to realize the sealing between the two vacuum pipe beams, thereby greatly reducing the sealing cost of the splicing parts of the vacuum pipe beams; furthermore, the sealing structure between pipe beams provided by the present invention is very easy to disassemble, and it is only necessary to restore an atmospheric pressure state in the vacuum pipe, and then take out the sealing members in the wedge-shaped sealing grooves at the ends of two adjacent sections of vacuum pipe beams. Specifically, in the present invention, the wedge-shaped sealing groove specifically refers to a groove whose width on the side close to the atmospheric environment is greater than the width on the side close to the vacuum environment.

[0044] As a specific embodiment of the present invention, Figure 2As shown, both the first sealing fitting 10 and the second sealing fitting 20 are conical structures. The first sealing fitting 10 is fixedly arranged at the end of the first vacuum pipe beam 200, and the angle between the first sealing fitting 10 and the outer surface of the first vacuum pipe beam is an acute angle. The second sealing fitting 20 is fixedly arranged at the end of the second vacuum pipe beam 300, and the angle between the second sealing fitting 20 and the second vacuum pipe beam 300 is an acute angle. As other embodiments of the present invention, the first sealing fitting 10 and the second sealing fitting 20 may also adopt other structural forms, such as a plurality of inclined surfaces connected in sequence to form an annular structure, or other irregular arc surface structures, etc., as long as it can ensure that the sealing fitting and the corresponding vacuum pipe beam are sealed and connected and a wedge-shaped sealing groove can be formed between the first sealing fitting 10 and the second sealing fitting 20.

[0045] In addition, in the present invention, in order to increase the service life of the sealing member, a rubber material such as silicone rubber, fluororubber, etc. that is resistant to aging can be selected as the sealing member 30 .

[0046] Furthermore, in the present invention, in order to improve the service life of the seal 30 and improve the sealing performance between the first vacuum pipe beam and the second vacuum pipe beam, the sealing structure can be configured to also include a sealant layer 40, and the sealant layer 40 is tightly arranged on the seal 30, the first sealing fitting 10 and the second sealing fitting 20. The sealant layer 40 is used to isolate the seal 30 from the external atmosphere and further improve the sealing performance between the first vacuum pipe beam and the second vacuum pipe beam.

[0047] As a specific embodiment of the present invention, the first sealing fitting 10 and the second sealing fitting 20 of the conical surface structure are respectively fixedly arranged on two adjacent sections of the vacuum pipe beam, and the conical surfaces of the first sealing fitting 10 and the second sealing fitting 20 and the sealing member 30 are appropriately ground or polished to ensure the sealing effect. A sealing ring is used as the sealing member 30, and the sealing ring is inserted into the annular wedge-shaped sealing groove between the first sealing fitting 10 and the second sealing fitting 20. In order to increase the force uniformity of the sealing ring, the structural section of the sealing ring can be designed to be the same or similar to the outer surface of the sealing fitting. In order to increase the service life of the sealing ring, a rubber material such as silicone rubber and fluororubber that is resistant to sealing and aging can be used, and a sealant is applied on the side of the sealing ring that contacts the atmosphere, which isolates the sealing ring from oxygen and ozone in the air on the one hand, and also has a sealing performance itself.

[0048] Furthermore, in the present invention, in order to improve the rigidity and strength of the first sealing fitting and the second sealing fitting, the sealing structure 100 between the vacuum pipe beams can be configured to also include a first reinforcing rib 50 and / or a second reinforcing rib 60, the first reinforcing rib 50 is respectively connected to the first sealing fitting 10 and the first vacuum pipe beam, and the first reinforcing rib 50 is used to improve the rigidity and strength of the first sealing fitting 10, the second reinforcing rib 60 is respectively connected to the second sealing fitting 20 and the second vacuum pipe beam, and the second reinforcing rib 60 is used to improve the rigidity and strength of the second sealing fitting 20.

[0049] In addition, since the first sealing fitting and the second sealing fitting are both annular structures, in order to improve the stiffness and strength of the sealing fittings along the circumference of the annular structure, the sealing structure 100 between the vacuum duct beams can be configured to include a plurality of first reinforcing ribs 50 and a plurality of second reinforcing ribs 60, wherein the plurality of first reinforcing ribs 50 are evenly spaced along the periphery of the first vacuum duct beam between the first sealing fitting 10 and the first vacuum duct beam, and the plurality of second reinforcing ribs 60 are evenly spaced along the periphery of the second vacuum duct beam between the second sealing fitting 20 and the second vacuum duct beam.

[0050] According to another aspect of the present invention, a vacuum pipe is provided, which includes a first vacuum pipe beam 200, a second vacuum pipe beam 300 and a sealing structure 100 between the vacuum pipe beams. The sealing structure 100 between the vacuum pipe beams is the sealing structure 100 between the vacuum pipe beams as described above. The first vacuum pipe beam 200 is sealedly connected to the second vacuum pipe beam 300 through the sealing structure 100 between the vacuum pipe beams.

[0051] By applying this configuration, a vacuum pipe is provided. Since the sealing structure between the sealing beams of the vacuum pipe of the present invention is low in cost, easy to disassemble and can ensure the sealing performance between adjacent vacuum pipe beams, the sealing structure between the sealing beams of the vacuum pipe of the present invention is applied to the vacuum pipe, which can greatly reduce the construction cost of the vacuum pipe and ensure the sealing performance of the vacuum pipe.

[0052] In the present invention, in order to further reduce the line construction cost, reduce the occupied area and reduce the construction difficulty, the first vacuum pipe beam 200 can be configured to include a first pipe upper structure 210 and a first track beam 220, the first track beam 220 is arranged at the lower part of the first pipe upper structure 210, and the first pipe upper structure 210 is connected to the first track beam 220 to form a first pipe body, the second vacuum pipe beam 300 includes a second pipe upper structure 310 and a second track beam 320, the second track beam 320 is arranged at the lower part of the second pipe upper structure 310, and the second pipe upper structure 310 is connected to the second track beam 320 to form a second pipe body, the first track beam 220 and the second track beam 320 are both used to provide a running track for the vehicle, and the first pipe body and the second pipe body are both used to provide an airtight vacuum pipe environment.

[0053] By applying this configuration, the first vacuum pipe beam and the second vacuum pipe beam are both set as split pipe structures, and the pipe superstructure and the track beam are connected to provide an airtight vacuum pipe environment. This method allows the height and width dimensions of the pipe structure to be freely designed without affecting each other, and can effectively increase the vertical stiffness of the pipe without increasing the lateral dimensions and the footprint of the line. In addition, during the construction of the elevated section, since the first vacuum pipe beam and the second vacuum pipe beam are both split pipe structures, the track beam located at the bottom can form the working route of the bridge erection machine during construction. After the track beam located at the bottom of the vacuum pipe structure is installed, the bridge erection machine can be used to install the pipe superstructure one by one. The construction is very convenient and the line construction cost is low.

[0054] Furthermore, in the present invention, since both the first vacuum pipe beam and the second vacuum pipe beam are split pipe structures, in order to facilitate the installation between the sealing fitting and the vacuum pipe beam, the first sealing fitting 10 can be configured to include a first upper sealing fitting element 11 and a first track beam sealing fitting element 12, the first upper sealing fitting element 11 is fixedly arranged on the end periphery of the first pipe upper structure 210, and the first track beam sealing fitting element 12 is fixedly arranged on the end periphery of the first track beam 220; the second sealing fitting 20 includes a second upper sealing fitting element 21 and a second track beam sealing fitting element 22, the second upper sealing fitting element 21 is fixedly arranged on the end periphery of the second pipe upper structure 310, and the second track beam sealing fitting element 22 is fixedly arranged on the end periphery of the second track beam 320.

[0055] In addition, in the present invention, in order to be suitable for industrial applications and to increase the service life of the vacuum pipe, the materials of the first pipe superstructure 210 and the second pipe superstructure 310 can be configured to include steel, and the materials of the first track beam 220 and the second track beam 320 can include concrete. As a specific embodiment of the present invention, the load acting on the pipe when the vehicle is running in the vacuum pipe is mainly vertical, so the pipe section is required to have a higher bending stiffness in the vertical direction, and no excessive stiffness is required in the horizontal direction. Since the vacuum pipe beams provided by the present invention are all split pipes, the height and width dimensions of the pipe structure can be freely designed. Based on this, the bending stiffness of the pipe in the vertical direction can be increased according to the stiffness requirements of the pipe in the actual operation of the vehicle, so that more concrete materials are distributed in the vertical direction to fully utilize the strength performance of the material.

[0056] Further, in the present invention, the first pipeline upper structure 210 and the first track beam 220 can be connected using bolts 400, and the second pipeline upper structure 220 and the second track beam 320 can also be connected using bolts 400. Specifically, Figure 4 As shown, the first pipeline upper structure 210 (the second pipeline upper structure 220) and the first track beam 220 (the second track beam 320) made of lower concrete material are connected by a plurality of bolts 400. Before assembly, the bolts 400 are embedded in the first track beam 220 (the second track beam 320) made of lower concrete material. The spacing between the bolts is tested according to actual needs, and holes are drilled in the first pipeline upper structure 210 (the second pipeline upper structure 220) according to the spacing between the bolts. The gap between the bolts 400 and the bolt holes is controlled to enhance the connection strength between the upper and lower parts of the vacuum pipeline beam, thereby improving the load-bearing integrity of the vacuum pipeline beam.

[0057] In addition, in the present invention, in order to ensure the airtight performance of the first vacuum pipe beam 200 and the second vacuum pipe beam 300 themselves, the first vacuum pipe beam 200 can be configured to also include a first sealing connector 230, which is arranged at the connection position between the first pipe superstructure 210 and the first track beam 220, and the first sealing connector 230 is used to achieve a sealed connection between the first pipe superstructure 210 and the first track beam 220; the second vacuum pipe beam 300 also includes a second sealing connector 330, which is arranged at the connection position between the second pipe superstructure 310 and the second track beam 320, and the second sealing connector 330 is used to achieve a sealed connection between the second pipe superstructure 310 and the second track beam 320. As a specific embodiment of the present invention, a rubber strip can be used as a sealing connector. In this way, when the vacuum pipe is evacuated, the atmospheric pressure will generate tens of tons of downward pressure on the upper structure of the pipe per meter in length. The sealing rubber strip structure is tightly pressed on the first track beam 220 (second track beam 320) at the bottom, which can achieve a very good sealing effect. As other embodiments of the present invention, other low-rigidity, sealing materials can also be used as the first sealing connector 230 (second sealing connector 330).

[0058] By applying this configuration, a seal is provided at the connection position between the first pipe superstructure 210 (the second pipe superstructure 220) and the first track beam 220 (the second track beam 320), so that the splicing sealing performance between the vacuum pipe beams can be ensured.

[0059] In order to further understand the present invention, the following Figures 1 to 9 The vacuum pipe inter-beam sealing structure and the vacuum pipe of the present invention are described in detail.

[0060] like Figures 1 to 9 As shown, according to a specific embodiment of the present invention, a vacuum pipe beam sealing structure and a vacuum pipe are provided, wherein the vacuum pipe beam sealing structure includes a first sealing fitting 10 in the form of a conical surface, a second sealing fitting 20 in the form of a conical surface, a sealing member 30, a sealing adhesive layer 40, a plurality of first reinforcing ribs 50 and a plurality of second reinforcing ribs 60.

[0061] The first sealing fitting 10 and the second sealing fitting 20 are respectively fixedly arranged on two adjacent sections of the vacuum pipe beam, and the conical surfaces of the first sealing fitting 10 and the second sealing fitting 20 and the sealing member 30 are appropriately ground or polished to ensure the sealing effect. A sealing ring is used as the sealing member 30, and the sealing ring is inserted into the annular wedge-shaped sealing groove between the first sealing fitting 10 and the second sealing fitting 20. In order to increase the force uniformity of the sealing ring, the structural section of the sealing ring can be designed to be the same or similar to the outer surface of the sealing fitting. In order to increase the service life of the sealing ring, a rubber material such as silicone rubber and fluororubber that is resistant to sealing and aging can be used, and a sealant is applied on the side of the sealing ring that contacts the atmosphere, which, on the one hand, isolates the sealing ring from oxygen and ozone in the air, and on the other hand, it also has a sealing performance.

[0062] The sealing ring in the sealing structure provided in this embodiment is actually just a sealing strip, which is cut to the required length according to the needs of the construction site and forms a sealing ring at the connection of the vacuum pipe. Therefore, the production efficiency is particularly high, the cost is low, and it is suitable for batch engineering applications.

[0063] A plurality of first reinforcing ribs 50 are evenly spaced along the periphery of the first vacuum duct beam 200 between the first sealing fitting 10 and the first vacuum duct beam to improve the stiffness and strength of the first sealing fitting 10 , and a plurality of second reinforcing ribs 60 are evenly spaced along the periphery of the second vacuum duct beam 300 between the second sealing fitting 20 and the second vacuum duct beam to improve the stiffness and strength of the second sealing fitting 20 .

[0064] After the vacuum pipe is evacuated, an atmospheric pressure difference is generated on the inner and outer surfaces of the seal. Figure 3 As shown, under this pressure, the seal 30 is closely fitted with the first sealing fitting 10 and the second sealing fitting 20, which naturally ensures the sealing effect. When the seal needs to be replaced, the vacuum pipe is first restored to atmospheric pressure, and then the inserted seal ring is pushed out from the inside to the outside inside the vacuum pipe.

[0065] The vacuum pipe includes a split first vacuum pipe beam 200, a split second vacuum pipe beam 300 and a sealing structure 100 between the vacuum pipe beams. The first vacuum pipe beam 200 includes a first pipe upper structure 210 and a first track beam 220. The first track beam 220 is arranged at the lower part of the first pipe upper structure 210. The first pipe upper structure 210 and the first track beam 220 are connected by bolts 400 to form a first pipe body. A sealing strip is used to achieve sealing between the first pipe upper structure 210 and the first track beam 220.

[0066] The second vacuum pipe beam 300 includes a second pipe upper structure 310 and a second track beam 320. The second track beam 320 is arranged at the lower part of the second pipe upper structure 310. The second pipe upper structure 310 and the second track beam 320 are connected by bolts 400 to form a second pipe body. A sealing strip is used to seal the second pipe upper structure 310 and the second track beam 320. The first track beam 220 and the second track beam 320 are both used to provide a running track for the vehicle, and the first pipe body and the second pipe body are both used to provide an airtight vacuum pipe environment. The materials of the first pipe upper structure 210 and the second pipe upper structure 310 are both steel, and the materials of the first track beam 220 and the second track beam 320 are both concrete.

[0067] When using the sealing structure of the present invention, Figures 5 to 7 As shown, first, the first upper sealing fitting component 11 is welded at both ends of the first pipeline upper structure 210, and the first track beam sealing fitting component 12 made of metal is embedded in the first track beam 220; the second upper sealing fitting component 21 is welded at both ends of the second pipeline upper structure 310, and the second track beam sealing fitting component 22 made of metal is embedded in the second track beam 320. Thus, an annular wedge-shaped sealing groove is formed at the ends of two adjacent sections of the vacuum pipeline beam, and a sealing tape of a suitable length is cut according to the circumference of the annular wedge-shaped sealing groove, and the sealing tape is inserted into the annular wedge-shaped sealing groove structure to form a sealing ring. After vacuuming, the sealing ring is further compacted, and then a sealant is applied to form a sealant layer 40 to isolate the sealing ring from oxygen and ozone in the air, thereby improving the anti-aging performance of the sealing tape and further enhancing the sealing effect.

[0068] The height and width of this split vacuum pipeline can be designed freely. The height of the pipeline can be increased as needed to improve the vertical stiffness of the pipeline, while controlling the lateral dimensions, reducing the use of steel and concrete materials and reducing the footprint of the line. Furthermore, the split vacuum pipeline is very convenient for elevated road construction. First, the lower concrete structure will be sequentially hoisted onto the bridge pier using a bridge erecting machine. These lower concrete structures themselves form the working line of the bridge erecting machine. After the lower concrete structure is installed, the upper structure can be installed one by one using a bridge erecting machine. The construction is very convenient. These factors have greatly reduced the cost of line construction.

[0069] In summary, the present invention provides a vacuum pipe inter-beam sealing structure and a vacuum pipe. Compared with the prior art, the sealing structure and the vacuum pipe have the following advantages.

[0070] First, the sealing structure provided by the present invention can utilize the air pressure difference between the inside and outside of the vacuum pipeline to achieve sealing between the pipeline beams, thereby ensuring the sealing effect of the split vacuum pipeline.

[0071] Secondly, the cost of the sealing structure provided by the present invention is very low. It only requires adding a simple conical sealing fitting at the end of the pipeline beam, and inserting a sealing member made of a flexible material such as rubber into the annular wedge-shaped sealing groove between the conical sealing fittings at the ends of two adjacent beam sections to complete the sealing of the vacuum pipeline, thereby greatly reducing the cost of building the vacuum pipeline.

[0072] Third, the sealing structure between the vacuum pipe beams provided by the present invention is very easy to disassemble. It is only necessary to restore the vacuum pipe to an atmospheric pressure state, and then remove the seal inserted between the wedge-shaped sealing grooves at the ends of two adjacent sections of the vacuum pipe beams.

[0073] Fourthly, the split vacuum pipe beams provided by the present invention are formed by connecting the upper and lower bodies by bolts. After the sealing structures at both ends of a pipe beam section are disassembled, the upper structure of the pipe beam section is also very easy to lift, and opening the vacuum pipe further facilitates the rescue of the accident train.

[0074] Fifth, the height and width dimensions of the split vacuum pipeline provided by the present invention can be freely designed, which reduces the use of steel and concrete materials and reduces the floor space occupied by the line.

[0075] Sixth, the split vacuum pipe structure provided by the present invention is very convenient for the construction of elevated road sections. First, a bridge-building machine is used to sequentially lift the lower concrete structure onto the bridge piers. The lower concrete structure itself forms the working route of the bridge-building machine. After the installation of the lower concrete structure is completed, the bridge-building machine is used to install the upper structure one by one, which makes the construction very convenient.

[0076] 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.

[0077] 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.

[0078] 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.

[0079] 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 vacuum pipe beam sealing structure, characterized in that: The sealing structure is used to achieve a sealed connection between adjacent first vacuum pipe beams and second vacuum pipe beams, and the sealing structure comprises: a first sealing fitting (10), the first sealing fitting (10) being fixedly arranged at the end of the first vacuum pipe beam along the periphery of the end of the first vacuum pipe beam; a second sealing fitting (20), the second sealing fitting (20) being fixedly arranged at the end of the second vacuum pipe beam along the periphery of the end of the second vacuum pipe beam, a wedge-shaped sealing groove (100a) being formed between the first sealing fitting (10) and the second sealing fitting (20); the first sealing fitting (10) and the second sealing fitting (20) are both conical structures; or the first sealing fitting (10) and the second sealing fitting (20) are both connected in sequence by a plurality of inclined surfaces to form an annular structure; A sealing member (30), wherein the sealing member (30) is arranged in the wedge-shaped sealing groove (100a), and the sealing member (30) is tightly fitted on the first sealing fitting member (10) and the second sealing fitting member (20) constituting the wedge-shaped sealing groove (100a) under the action of atmospheric pressure to achieve a sealed connection between the first vacuum pipe beam and the second vacuum pipe beam; the sealing structure also includes a sealing adhesive layer (40), wherein the sealing adhesive layer (40) is tightly fitted on the sealing member (30), the first sealing fitting member (10) and the second sealing fitting member (20), and the sealing adhesive layer (40) is used to isolate the sealing member (30) from the outside atmosphere and to improve the sealing performance between the first vacuum pipe beam and the second vacuum pipe beam.

2. The vacuum pipe beam sealing structure according to claim 1, characterized in that: The vacuum pipe beam sealing structure (100) further comprises a first reinforcing rib (50) and / or a second reinforcing rib (60), wherein the first reinforcing rib (50) is respectively connected to the first sealing fitting (10) and the first vacuum pipe beam, and the first reinforcing rib (50) is used to improve the rigidity and strength of the first sealing fitting (10), and the second reinforcing rib (60) is respectively connected to the second sealing fitting (20) and the second vacuum pipe beam, and the second reinforcing rib (60) is used to improve the rigidity and strength of the second sealing fitting (20).

3. The vacuum pipe beam sealing structure according to claim 2, characterized in that: The vacuum duct beam sealing structure (100) comprises a plurality of first reinforcing ribs (50) and a plurality of second reinforcing ribs (60), wherein the plurality of first reinforcing ribs (50) are evenly spaced along the periphery of the first vacuum duct beam end between the first sealing fitting (10) and the first vacuum duct beam, and the plurality of second reinforcing ribs (60) are evenly spaced along the periphery of the second vacuum duct beam end between the second sealing fitting (20) and the second vacuum duct beam.

4. The vacuum pipe beam sealing structure according to any one of claims 1 to 3, characterized in that: The sealing element (30) comprises silicone rubber or fluororubber.

5. A vacuum pipeline, characterized in that: The vacuum pipe comprises a first vacuum pipe beam (200), a second vacuum pipe beam (300) and a sealing structure (100) between the vacuum pipe beams. The sealing structure (100) between the vacuum pipe beams is the sealing structure (100) between the vacuum pipe beams as claimed in any one of claims 1 to 4. The first vacuum pipe beam (200) is sealedly connected to the second vacuum pipe beam (300) through the sealing structure (100) between the vacuum pipe beams.

6. The vacuum pipe according to claim 5, characterized in that: The first vacuum pipe beam (200) comprises a first pipe upper structure (210) and a first track beam (220), wherein the first track beam (220) is arranged at the lower part of the first pipe upper structure (210), and the first pipe upper structure (210) is connected to the first track beam (220) to form a first pipe body; the second vacuum pipe beam (300) comprises a second pipe upper structure (310) and a second track beam (320), wherein the second track beam (320) is arranged at the lower part of the second pipe upper structure (310), and the second pipe upper structure (310) is connected to the second track beam (320) to form a second pipe body; the first track beam (220) and the second track beam (320) are both used to provide a running track for a vehicle, and the first pipe body and the second pipe body are both used to provide an airtight vacuum pipe environment.

7. The vacuum pipe according to claim 6, characterized in that: The first sealing fitting (10) comprises a first upper sealing fitting element (11) and a first track beam sealing fitting element (12); the first upper sealing fitting element (11) is fixedly arranged on the periphery of the end of the first pipeline upper structure (210), and the first track beam sealing fitting element (12) is fixedly arranged on the periphery of the end of the first track beam (220); the second sealing fitting (20) comprises a second upper sealing fitting element (21) and a second track beam sealing fitting element (22); the second upper sealing fitting element (21) is fixedly arranged on the periphery of the end of the second pipeline upper structure (310), and the second track beam sealing fitting element (22) is fixedly arranged on the periphery of the end of the second track beam (320).

8. The vacuum pipe according to claim 7, characterized in that: The materials of the first pipeline superstructure (210) and the second pipeline superstructure (310) both include steel, and the materials of the first track beam (220) and the second track beam (320) both include concrete.

9. The vacuum pipe according to claim 8, characterized in that: The first vacuum pipe beam (200) further comprises a first sealing connection member (230), which is arranged at a connection position between the first pipe superstructure (210) and the first track beam (220), and the first sealing connection member (230) is used to achieve a sealed connection between the first pipe superstructure (210) and the first track beam (220); the second vacuum pipe beam (300) further comprises a second sealing connection member (330), which is arranged at a connection position between the second pipe superstructure (310) and the second track beam (320), and the second sealing connection member (330) is used to achieve a sealed connection between the second pipe superstructure (310) and the second track beam (320).

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