Recompression device for vacuum ducts

Abstract

The application provides a supercharging device for a vacuum pipeline, which comprises a plurality of first supercharging valves, a variable-diameter multi-pass pipeline assembly arranged outside the vacuum pipeline, the variable-diameter multi-pass pipeline assembly comprising a plurality of branch pipelines and a main pipeline, the diameters of the plurality of branch pipelines are different, the plurality of branch pipelines are in communication with the main pipeline, the main pipeline is in communication with the vacuum pipeline, the plurality of first supercharging valves are in one-to-one correspondence with the plurality of branch pipelines and in communication with the plurality of branch pipelines, and the relationship between the effective area A of the main pipeline and the effective areas A1, A2, … A i , … A n of each branch pipeline satisfies the technical scheme of the application, so as to solve the technical problem that the supercharging device is difficult to be applied to the safe and rapid supercharging demand of the large-size vacuum pipeline in the prior art.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of low vacuum and pipeline transportation, and particularly relates to a pressure recovery device for a vacuum pipeline. BACKGROUND

[0002] A pipeline train is a new transportation system which uses a train as a carrier, uses superconducting magnetic levitation technology to realize contact between the train and the ground to eliminate frictional resistance, and uses an internal near-vacuum pipeline environment to greatly reduce air resistance, so as to realize a train with a theoretical speed of more than 1000 km / h. A low-vacuum pipeline train can greatly shorten the time and space distance between cities, has the advantages of being not affected by weather conditions, not being limited by air traffic flow, being seamlessly connected with a city rail system, and the like.

[0003] In addition to establishing and maintaining a vacuum environment in a large-size pipeline space, a vacuum pipeline also has a requirement of recovering from a vacuum environment to normal pressure to meet requirements of daily maintenance and emergency escape of the pipeline. Safe and rapid pressure recovery of a large-size vacuum pipeline requires a pressure recovery device with reliable functions.

[0004] At present, there are few pressure recovery devices for a large-size vacuum pipeline, and similar pressure recovery devices are as follows.

[0005] A patent application "Low-pressure gas pressure recovery device and method" (application number 201410569134.5) discloses a low-pressure gas pressure recovery device and method, which can realize on-site high-ratio pressure recovery of gas without external power input.

[0006] A patent application "Vacuum valve device capable of being freely opened and closed and realizing high air tightness and manufacturing method" (application number 201410546519.X) gives a vacuum valve device, which can realize safe and reliable dynamic sealing effect without oil pollution, and effectively solves the contradiction between frequent opening and closing and high air tightness required by a vacuum chamber of a low-temperature refrigerator in actual application.

[0007] The above-mentioned vacuum valve devices are designed for respective use scenarios, and a pressure recovery device applied to a large-size vacuum pipeline usually has a large air flow impact. The pressure recovery devices provided in the prior art are difficult to be applied to safe and rapid pressure recovery requirements of a large-size vacuum pipeline. SUMMARY

[0008] The present application provides a pressure recovery device for a vacuum pipeline, which can solve the technical problem that a pressure recovery device in the prior art is difficult to be applied to safe and rapid pressure recovery requirements of a large-size vacuum pipeline.

[0009] The application provides a kind of for vacuum pipeline's complex pressure device, for vacuum pipeline's complex pressure device includes: multiple first complex pressure valve;Variable diameter multi-pass pipeline assembly, variable diameter multi-pass pipeline assembly is arranged outside vacuum pipeline, variable diameter multi-pass pipeline assembly includes multiple branch pipeline and main pipeline, the pipe diameter of multiple branch pipeline is different, multiple branch pipeline is connected with main pipeline, main pipeline is connected with vacuum pipeline, multiple first complex pressure valve is connected with multiple branch pipeline one by one, the relationship between the effective area A of main pipeline and the effective area A1, A2, … A i 、…A n Between satisfy

[0010] Further, for vacuum pipeline's complex pressure device further includes diffuser, diffuser is arranged in vacuum pipeline, diffuser is connected with main pipeline, diffuser is used to divide the direction of main pipeline's air flow into multi-direction flow.

[0011] Further, first complex pressure valve includes non-insertion plate valve type vacuum valve, complex pressure device further includes second complex pressure valve, second complex pressure valve is arranged between variable diameter multi-pass pipeline assembly and diffuser.

[0012] Further, non-insertion plate valve type vacuum valve includes flap valve or electromagnetic valve, second complex pressure valve includes insertion plate valve.

[0013] Further, for vacuum pipeline's complex pressure device further includes filter assembly, filter assembly is connected with multiple first complex pressure valve, filter assembly is used to filter the impurities in air.

[0014] Further, filter assembly includes multiple filters, multiple filters are connected with multiple first complex pressure valve one by one.

[0015] Further, complex pressure device further includes multiple drivers, multiple drivers are connected with multiple complex pressure valves one by one, and the driver is used to control the opening and closing of the complex pressure valve, wherein, when the complex pressure device fails, the complex pressure valve keeps closed state.

[0016] Further, complex pressure device further includes first silencer and / or second silencer, first silencer is arranged outside vacuum pipeline and is arranged close to the pipe wall of vacuum pipeline, and the first silencer is used to reduce noise;Second silencer is arranged inside vacuum pipeline and is arranged close to the pipe wall of vacuum pipeline, and the second silencer is used to reduce noise.

[0017] Further, complex pressure device further includes rain and dust cover group, rain and dust cover group covers the upper part of multiple complex pressure valves, and the rain and dust cover group is used to prevent the damage of external rain and dust to complex pressure device.

[0018] Further, the repressing device further comprises a detachable soundproof barrier, which is arranged outside the plurality of first repressing valves and the variable-diameter multi-pass pipeline assembly, and is used to reduce the noise generated by the repressing device.

[0019] The technical scheme of the present application provides a repressing device for a vacuum pipeline, which comprises a variable-diameter multi-pass pipeline assembly, and a plurality of branch pipelines are connected with a main pipeline, and the main pipeline is connected with the vacuum pipeline, which can effectively reduce the impact of high-speed airflow on the instruments and equipment in the pipeline during the repressing process, and at the same time, the repressing time is not obviously affected. i 、…A n The technical scheme of the present application provides a repressing device for a vacuum pipeline, which comprises a variable-diameter multi-pass pipeline assembly, and a plurality of branch pipelines are connected with a main pipeline, and the main pipeline is connected with the vacuum pipeline, which can effectively reduce the impact of high-speed airflow on the instruments and equipment in the pipeline during the repressing process, and at the same time, the repressing time is not obviously affected. BRIEF DESCRIPTION OF DRAWINGS

[0020] The accompanying drawings included to provide a further understanding of the embodiments of the present application and constitute a part of the specification, illustrate the embodiments of the present application and together with the text description serve to explain the principles of the present application. Obviously, the drawings described below are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor on the basis of these drawings.

[0021] Figure 1 Fig. 1 shows a structural schematic diagram of a repressing device for a vacuum pipeline according to a first embodiment of the present application;

[0022] Figure 2 Fig. 2 shows a structural schematic diagram of a repressing device for a vacuum pipeline according to a second embodiment of the present application;

[0023] Figure 3 Fig. 3 shows a structural schematic diagram of a variable-diameter multi-pass pipeline assembly according to a specific embodiment of the present application.

[0024] Among them, the above drawings include the following reference signs:

[0025] 10, first repressing valve; 20, variable-diameter multi-pass pipeline assembly; 21, branch pipeline; 22, main pipeline; 30, flow diffuser; 40, second repressing valve; 50, filter assembly; 60, first silencer; 70, rain and dust protection cover set; 80, detachable soundproof barrier. DETAILED DESCRIPTION ​

[0026] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the present invention or its application or use. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0027] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0028] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps set forth in these embodiments do not limit the scope of the invention. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following figures denote similar items; therefore, once an item is defined in one figure, it need not be further discussed in subsequent figures.

[0029] like Figures 1 to 3 As shown in the figure, a pressure-repressurizing device for a vacuum pipeline is provided according to a specific embodiment of the present invention. This pressure-repressurizing device includes multiple first pressure-repressurizing valves 10 and a variable-diameter multi-way pipe assembly 20. The variable-diameter multi-way pipe assembly 20 is disposed outside the vacuum pipeline and includes multiple branch pipes 21 and a main pipe 22. The diameters of the multiple branch pipes 21 are all different, and each branch pipe 21 is connected to the main pipe 22. The main pipe 22 is connected to the vacuum pipeline. The multiple first pressure-repressurizing valves 10 are connected to the multiple branch pipes 21 in a one-to-one correspondence. The effective area A of the main pipe 22 corresponds to the effective areas A1, A2, ... A1 of each branch pipe 21. i ...An the relationship between the effective area A of the main pipeline and the effective areas A1, A2, … A

[0030] By using this configuration, a repressing device for a vacuum pipeline is provided, which is connected with the vacuum pipeline through the variable-diameter multi-pass pipeline assembly, and the multiple branch pipelines are connected with the main pipeline. This configuration can effectively reduce the impact of high-speed airflow on the instruments and equipment in the pipeline during the repressing process, while minimizing the impact on the repressing time. In addition, the relationship between the effective area A of the main pipeline and the effective areas A1, A2, … A i , … A n is set to satisfy to avoid throttling and prevent affecting the repressing efficiency. Therefore, compared with the prior art, the repressing device for a vacuum pipeline can be applied to the safe and rapid repressing requirements of large-size vacuum pipelines, and effectively avoids the impact of high-speed airflow on the key instruments and equipment in the pipeline.

[0031] In the present application, in order to further reduce the impact of high-speed airflow, the repressing device for a vacuum pipeline further comprises a flow diffuser 30, which is arranged in the vacuum pipeline and is connected with the main pipeline 22. The flow diffuser 30 is used to divide the airflow direction of the main pipeline 22 into multiple directions.

[0032] In this configuration, by arranging the flow diffuser 30 in the pipeline, the flow diffuser 30 can control the direction and dispersion degree of the incident airflow to avoid the impact of airflow on the key instruments and equipment in the pipeline. In order to avoid throttling and affect the repressing efficiency of the repressing device, the effective total flow area of the flow diffuser should be greater than the effective total flow area A of the repressing valve.

[0033] Further, in the present application, in order to ensure the good sealing, service life and reliability of the repressing device, the first repressing valve 10 can be configured as a vacuum valve of the non-plug valve type. The repressing device further comprises a second repressing valve 40, which is arranged between the variable-diameter multi-pass pipeline assembly 20 and the flow diffuser 30.

[0034] As a second embodiment of the present application, as shown in Figure 1As shown, the vacuum valve of the non-plug valve type includes a flap valve or a solenoid valve, the second pressure recovery valve 40 includes a plug valve, and the pressure recovery device includes a plurality of flap valves (or solenoid valves) that are connected in one-to-one correspondence with the plurality of branch pipelines, and the plug valve is arranged between the main pipeline and the vacuum pipeline. Since the plug valve has good sealing performance, but affects the service life of the valve, the wear of the valve is large, and the reliability is relatively poor, the flap valve is easy to open, the response is fast, and the reliability is high, but the sealing performance is poor. By respectively arranging the flap valve and the plug valve, the advantages of good sealing performance of the plug valve and high reliability of the flap valve can be combined to ensure the good sealing, service life and reliability of the pressure recovery device.

[0035] As a second embodiment of the present application, as shown in Figure 2 The pressure recovery device can also be provided with only a plurality of first pressure recovery valves, the first pressure recovery valves include plug valves, and the plurality of plug valves are connected in one-to-one correspondence with the plurality of branch pipelines. This kind of way can also achieve the pressure recovery requirement of the vacuum pipeline.

[0036] Further, in the present application, in order to improve the cleanliness of the pressure recovery airflow, the pressure recovery device for the vacuum pipeline can be further provided with a filter assembly 50, the filter assembly 50 is connected in communication with the plurality of first pressure recovery valves 10, and the filter assembly 50 is used to filter impurities in the air.

[0037] In this configuration, by arranging the filter assembly in the pressure recovery device, 10 μm or more dust and obvious stones, fine sand and the like in the outside can be filtered out. At the same time, in order to avoid the occurrence of throttling affecting the pressure recovery efficiency, the effective flow area of the filter should be greater than the effective flow area A of the pressure recovery valve. The filter assembly can also have a sound attenuation function.

[0038] In addition, the filter assembly 50 can also be provided with a plurality of filters, and the plurality of filters are connected in one-to-one correspondence with the plurality of first pressure recovery valves. The outside air is filtered by the plurality of filters and then enters the plurality of first pressure recovery valves. This kind of way filters the air for the plurality of pressure recovery channels respectively, and the filtering efficiency is higher.

[0039] Further, in the present application, in order to improve the opening and closing efficiency of the pressure recovery valve, the pressure recovery device can be further provided with a plurality of drivers, the plurality of drivers are connected in one-to-one correspondence with the plurality of pressure recovery valves, and the driver is used to control the opening and closing of the pressure recovery valve. When the pressure recovery device fails, the pressure recovery valve remains in a normally closed state. In the present application, the driver can include an electric drive unit or a pneumatic drive unit, and the pressure recovery valve can be driven by a motor or a pneumatic drive mechanism. When the driver of the pressure recovery device fails or is powered off, the driver will be in a closed state, so as not to affect the internal pressure state in the vacuum pipeline. In addition, the pressure recovery valve is provided with two operation modes of electric (or pneumatic) and manual, and after the pressure recovery valve is self-closed and isolated, the opening and closing of the valve can also be manually performed.

[0040] In addition, in the present application, in order to reduce the impact of noise generated in the process of supercharging on the surrounding, the supercharging device can be configured to further include a first silencer 60 and / or a second silencer, the first silencer 60 is arranged outside the vacuum pipeline and close to the wall of the vacuum pipeline, the first silencer 60 is used to reduce noise; the second silencer is arranged inside the vacuum pipeline and close to the wall of the vacuum pipeline, and the second silencer is used to reduce noise.

[0041] Further, in the present application, in order to improve the service life of the supercharging device, the supercharging device can be configured to further include a rain and dust protection cover group 70, the rain and dust protection cover group 70 covers the upper part of the plurality of supercharging valves, and the rain and dust protection cover group 70 is used to prevent damage to the supercharging device by external rain and dust. In addition, in the present application, in order to avoid the impact of dust, rain, snow, hail and the like on each component of the supercharging device, the entire device can share a rain and dust protection cover, or a corresponding number of rain and dust protection covers can be selected according to the number of supercharging valves; at the same time, the moving parts (motor (or pneumatic driving mechanism), transmission mechanism) of the valve are avoided to be directly exposed to the outside, so as to prevent the influence of the external harsh environment.

[0042] In addition, in the present application, in order to reduce the noise pollution of the supercharging device, the supercharging device can be configured to further include a detachable soundproof barrier 80, the detachable soundproof barrier 80 is arranged outside the plurality of supercharging valves and the variable-diameter multi-way pipeline assembly 20, and the detachable soundproof barrier 80 is used to reduce the noise generated by the supercharging device.

[0043] In order to have a further understanding of the present application, the following will combine the specific embodiments of the present application with the accompanying drawings to make a detailed description. Figures 1 to 3 The supercharging device for the vacuum pipeline provided by the present application is described in detail.

[0044] As Figures 1 to 3As shown, the specific embodiments according to the present application provide a repressing device for a vacuum pipeline, which meets the safe and fast repressing requirements under different scenarios and needs of the vacuum pipeline. From the use of the vacuum pipeline and the functional requirements of the repressing device, the vacuum pipeline repressing device needs to have the following functions: (1) rain and dust prevention functions. The vacuum pipeline repressing device is directly exposed to the field, and is subjected to the invasion of wind, dust, rain, snow, hail and the like in daily life, and needs to ensure the long-term reliability of the repressing device; (2) filtering function. The vacuum pipeline needs to ensure good cleanliness to avoid the introduction of dust during the repressing process; (3) sound reduction function. The high-speed airflow in the repressing process of the vacuum pipeline is easy to induce high noise, and there are noise control requirements inside and outside the vacuum pipeline; (4) airflow impact suppression. To ensure the safety of the equipment and instruments in the vacuum pipeline, the airflow during the repressing process should be controlled and adjusted, and a flow dispersing device can be added to avoid direct airflow impact; (5) fault isolation function. The valve should be in a normally closed state under power failure and fault to not affect the pressure state in the vacuum pipeline; (6) modularization and expansion function. The repressing device is a multifunctional device, and the modularization and expansion function should be considered to increase or decrease modules or adjust the arrangement order to meet the actual use requirements.

[0045] In the present embodiment, a rain and dust prevention cover 70 is arranged on the top of the entire repressing device to avoid the impact of dust, rain, snow, hail and the like on each component. The entire device can share one rain and dust prevention cover 70, or a corresponding number of rain and dust prevention covers 70 can be selected according to the number of repressing valves. At the same time, the moving parts (motor (or pneumatic driving mechanism), transmission mechanism) of the repressing valve are not directly exposed to avoid the influence of the external harsh environment.

[0046] A filtering assembly 50 is arranged on the repressing device to filter out dust above 10 μm and obvious stones, fine sand and the like from the outside. The effective total flow area of the filtering assembly 50 should be greater than the effective total flow area of the repressing valve. The filtering assembly 50 can have a sound reduction function, and the entire device can share one filtering assembly 50, or the filtering assembly 50 can be configured to include multiple filters, which are connected in correspondence with the multiple first repressing valves 10.

[0047] An acoustic silencer is arranged in the repressing device to meet the noise reduction function. The acoustic silencer can be arranged on the outside, inside or both inside and outside of the vacuum pipeline according to the requirements. At the same time, when the repressing noise is large, a soundproof shielding cover 80 can be added outside, which can be designed and considered together with the rain and dust prevention cover 70.

[0048] In order to inhibit the impact of high-speed airflow in the repressing process, a plurality of repressing valves with different diameters are connected through the variable-diameter multi-pass pipeline assembly 20, and are opened respectively or in stages according to different use requirements, so as to weaken the impact of high-speed airflow; after the high-speed airflow enters the inside of the vacuum pipeline through the repressing device, the flow distributor is arranged in the pipeline, so that the direction and dispersion degree of the incident airflow can be controlled, so as to avoid the impact of the airflow on the key instruments and equipment in the pipeline. The effective total flow area of the flow distributor should be greater than the effective total flow area A of the repressing valve.

[0049] When the repressing valve motor fails or is powered off, the valve is ensured to be in a closed state, so as not to affect the internal pressure state in the vacuum pipeline. The repressing valve is provided with electric and manual operation modes, and after the repressing valve is self-closed and isolated, the opening and closing of the valve can also be manually performed. The main functional units of the repressing device are modularly designed and arranged, and the interfaces are connected through standard flanges and signal ports, so that the functional requirements can be met by plug-and-play or adjustment of the sequence.

[0050] As a first embodiment of the present application, as shown in Figure 1 , the repressing device for the vacuum pipeline is composed of a dustproof and rainproof cover 70, a filter, a plurality of flap valves, a variable-diameter multi-pass pipeline assembly 20, a plug valve, a first silencer 60, a flow distributor 30, etc. As a second embodiment of the present application, as shown in Figure 2 , the repressing device for the vacuum pipeline is composed of a dustproof and rainproof cover 70, a filter, a plurality of plug valves, a variable-diameter multi-pass pipeline assembly 20, a first silencer 60, a flow distributor 30, etc. to realize the functional requirements of the device, and the arrangement sequence of each functional module can be adjusted according to requirements. The device can be externally provided with a detachable soundproof shield 80 according to requirements, so as to avoid noise pollution in the repressing process, and the design of the soundproof shield should avoid the accumulation of rainwater and dust in the shield cover.

[0051] As shown in Figure 3 , a plurality of first repressing valves are connected in parallel through the variable-diameter multi-pass pipeline assembly 20, and the effective areas A1, A2, …, A n of the branch pipelines 21 should be ensured to satisfy the condition that the effective total area is less than the effective area A of the main pipeline, that is, A1 2 +A2 2 +……+A n 2 ≤A 2 When the vacuum pipeline needs to be repressed, the repressing valves with different diameters on the branch pipelines are opened in sequence according to the requirements, so as to weaken the impact of high-speed airflow without affecting the total repressing time.

[0052] In summary, the present application provides a repressing device for a vacuum pipeline, which has the following advantages compared with the prior art.

[0053] (1) Meet the requirements of vacuum pipeline rail transit safety and rapid re-pressurization, through the way of variable-diameter multi-pass connection, opening of various caliber re-pressurization valves and installation of diffusers, to reduce the impact of high-speed airflow on instruments and equipment in the pipeline during re-pressurization, while trying not to have a significant impact on the re-pressurization time.

[0054] (2) Good sealing, service life and reliability of the re-pressurization device are achieved by using flap valves (solenoid valves) in combination with plug valves or specially designed plug valves.

[0055] (3) Modular installation method, realizing plug-and-play of rain and dust prevention, filtration, sound reduction and other functions, meeting various functional requirements of vacuum pipeline re-pressurization.

[0056] (4) The re-pressurization valves in the re-pressurization device are designed to have manual and electric operation modes, and at the same time, ensure that they remain closed in the case of power failure and failure, to avoid unplanned valve opening and resulting vacuum pipeline leakage.

[0057] In the description of the present application, it should be understood that the orientation words such as "front, rear, upper, lower, left, right", "transverse, vertical, perpendicular, horizontal" and "top, bottom" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, without making the opposite statement, these orientation words do not indicate and imply that the devices or elements referred to must have a specific orientation or be constructed and operated in a specific orientation, therefore it cannot be understood as a limitation on the scope of protection of the present application; the orientation words "inner, outer" refer to the inner and outer of the contour of each component itself.

[0058] For the convenience of description, spatial relative terms such as "on", "above", "upper surface", "upper" and the like can be used herein to describe the spatial positional relationship of one device or feature with respect to other devices or features as shown in the drawings. It should be understood that the spatial relative terms are intended to include different orientations in use or operation in addition to the orientation of the devices described in the drawings. For example, if the devices in the drawings are inverted, the device described as "above" or "on" other devices or structures will be positioned "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below" orientations. The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein are interpreted accordingly.

[0059] In addition, it should be noted that the use of "first", "second", and the like words to qualify parts is merely for the convenience of distinguishing the corresponding parts, and the above words have no special meaning unless otherwise stated, and therefore cannot be understood as limiting the scope of protection of the present application.

[0060] The above only describes the preferred embodiments of the present application and is not intended to limit the present application. Various modifications and changes can be made by those skilled in the art based on the spirit and principles of the present application. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present application shall be included in the scope of protection of the present application.

Claims

1. A pressure recovery device for a vacuum conduit, characterized by, The booster device for the vacuum pipeline comprises: a plurality of first booster valves (10); A variable diameter multi-way pipe assembly (20) is disposed outside the vacuum pipeline. The variable diameter multi-way pipe assembly (20) includes multiple branch pipes (21) and a main pipe (22). The diameters of the multiple branch pipes (21) are different, and each of the multiple branch pipes (21) is connected to the main pipe (22). The main pipe (22) is connected to the vacuum pipeline. Multiple first pressure relief valves (10) are connected to the multiple branch pipes (21) one by one. The effective area A of the main pipe (22) and the effective area of ​​each of the branch pipes (21) are... The relationship between them satisfies The pressure-rebalancing device for the vacuum pipeline also includes a diffuser (30), which is disposed inside the vacuum pipeline and connected to the main pipeline (22). The diffuser (30) is used to divide the air outlet direction of the main pipeline (22) into multiple directions. The first pressure-rebalancing valve (10) includes a non-gate valve type vacuum valve. The pressure-rebalancing device also includes a second pressure-rebalancing valve (40), which is disposed between the variable diameter multi-way pipeline assembly (20) and the diffuser (30). The non-gate valve type vacuum valve includes a flap valve. The valve, the second pressure relief valve (40) includes a slide gate valve, the pressure relief device also includes a first silencer (60) and / or a second silencer, the first silencer (60) is disposed outside the vacuum pipe and close to the pipe wall of the vacuum pipe, the first silencer (60) is used to reduce noise; the second silencer is disposed inside the vacuum pipe and close to the pipe wall of the vacuum pipe, the second silencer is used to reduce noise, the pressure relief device also includes a rainproof and dustproof cover assembly (70), the rainproof and dustproof cover assembly (70) is used to prevent external rain and dust from damaging the pressure relief device.

2. The supercharging device for a vacuum tube according to claim 1, wherein The booster device for the vacuum pipeline further comprises a filter assembly (50) which is in communication with the plurality of first booster valves (10), and the filter assembly (50) is used for filtering impurities in air.

3. The supercharging device for a vacuum tube according to claim 2, characterized by The filter assembly (50) comprises a plurality of filters which are in one-to-one correspondence with the plurality of first booster valves (10).

4. The supercharging device for a vacuum tube according to claim 1, wherein The booster device further comprises a detachable soundproof barrier (80) which is arranged outside the plurality of first booster valves (10) and the variable-diameter multi-pass pipeline assembly (20), and the detachable soundproof barrier (80) is used for reducing noise generated by the booster device.

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