CN111235966B - Vacuum pipeline and installation assembly for high-speed train - Google Patents
Vacuum pipeline and installation assembly for high-speed train Download PDFInfo
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- CN111235966B CN111235966B CN202010063819.8A CN202010063819A CN111235966B CN 111235966 B CN111235966 B CN 111235966B CN 202010063819 A CN202010063819 A CN 202010063819A CN 111235966 B CN111235966 B CN 111235966B
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
- E01B2/00—General structure of permanent way
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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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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
- E01B25/00—Tracks for special kinds of railways
Abstract
The invention belongs to the technical field of vacuum pipeline trains, and particularly relates to a vacuum pipeline and an installation assembly for a high-speed train, which comprise a reinforced concrete foundation member arranged on a flat base body, wherein the reinforced concrete foundation member is provided with a vacuum pipeline; an emergency air inlet hole controlled by an electromagnetic valve is arranged on the vacuum pipeline; the vacuum track is obtained by splicing a section type vacuum pipeline assembly, wherein the section type vacuum pipeline assembly comprises a lower pipeline prefabricated part and an upper pipeline prefabricated part; the vacuum pipeline is provided with an inner blocking working bin and a vacuum pump room, and two ends of the vacuum pipeline are provided with outer blocking devices. Compared with the prior art, the invention has the following advantages: the mounting assembly of the vacuum pipeline is reasonable in structure arrangement, and is convenient for batch production; the length can be adjusted according to actual requirements, and the smoothness of the line can be ensured by ensuring the construction quality; effectively deal with various emergencies and have high safety.
Description
Technical Field
The invention belongs to the technical field of vacuum pipeline trains, and particularly relates to a vacuum pipeline and an installation assembly for a high-speed train.
Background
The vacuum pipeline train runs in the pipeline, is not influenced by climate and environment, is safe, high-speed and accurate, can reach two cities which are separated by thousands of kilometers in one hour or even dozens of minutes, and is the main development trend of traffic among extra-large central cities in the future; the airplane is the fastest transportation tool in the prior art, but the airplane needs a runway with the length of several kilometers, and the occupied area is large, so that an airport is usually constructed in the suburbs, a proper position is difficult to find in the center of a city, and the lifting of the airplane also has certain noise influence, so that a vacuum pipeline train is not slower than the airplane in speed, the occupied area of a station is small, the noise similar to the airplane is not generated, but the construction difficulty is large, and the airplane is the main research direction of the land rapid transportation tool.
The design, construction and operation of the high-speed rail train in China have been accumulated over ten years of experience, the civil engineering of the pipeline for the existing vacuum pipeline train and the design and construction method of a concrete foundation and a foundation part mainly use high-speed rail, but the operation speed of the vacuum pipeline train is higher than that of the ordinary high-speed rail, the leveling degree of the civil engineering foundation cannot use the numerical value of the high-speed rail, and the running pipeline of the train needs to be long enough, so that further research needs to be carried out on how to improve the leveling degree of the civil engineering foundation of the running pipeline of the train.
Disclosure of Invention
The invention aims to provide an integral structure of a vacuum pipeline used for a high-speed train, a component and an installation method thereof, so that a channel for long-distance running of the high-speed train can be formed. Only the vacuum pipeline which runs for a long distance can the train run at high speed in the pipeline, and a series of problems which occur in the running process, including relevant data of the terrace flatness, can be found and solved.
The invention is realized by the following technical scheme: a vacuum pipeline and an installation assembly for a high-speed train comprise a reinforced concrete foundation member arranged on a flat base body, wherein the reinforced concrete foundation member is provided with a vacuum pipeline, the reinforced concrete foundation member in the vacuum pipeline is provided with a track base plate, and the track base plate is provided with a track; an emergency air inlet hole controlled by an electromagnetic valve is arranged on the vacuum pipeline; the vacuum pipeline is obtained by splicing a section type vacuum pipeline assembly, the section type vacuum pipeline assembly comprises a lower pipeline prefabricated part and an upper pipeline prefabricated part, the lower pipeline prefabricated part is symmetrically arranged on two sides of a reinforced concrete foundation part, the lower pipeline prefabricated part comprises L-shaped supporting legs at the bottom, the bottoms of the L-shaped supporting legs are arranged in the reinforced concrete foundation part, L-shaped supports are formed by extending outwards above the L-shaped supporting legs, and concave platforms are arranged at the corners of the L-shaped supports; the bottom of the upper pipeline prefabricated part is provided with a strip-shaped groove matched with the concave table, and the strip-shaped groove of the upper pipeline prefabricated part is welded and fixed after being butted with the concave table to obtain a parallel inner straight welding line and a parallel outer straight welding line; a plurality of groups of tensioning bolt brackets which are oppositely arranged are uniformly distributed on the outer wall of the upper pipeline prefabricated part adjacent to the upper pipeline prefabricated part, and the corresponding tensioning bolt brackets are fixed by tensioning bolts; the part of the reinforced concrete foundation piece, which is positioned outside the L-shaped support leg, is provided with a pull-down piece, the pull-down piece comprises an L-shaped support arranged inside the reinforced concrete foundation piece, the upper end of the L-shaped support is positioned above the reinforced concrete foundation piece, and the upper end of the pull-down piece extends towards the segmented vacuum pipeline assembly to form a lower fixing plate which is obliquely arranged; an upper pulling piece is fixed on the side wall of the upper pipeline prefabricated part and comprises a seat body fixedly welded with the upper pipeline prefabricated part, the bottom of the seat body extends outwards to form an upper fixing plate arranged in parallel with a lower fixing plate, and the lower fixing plate and the upper fixing plate are connected and fixed through a tensioning stud bolt assembly;
an inner blocking working bin is arranged in the middle of the vacuum pipeline every other preset running length, and outer blocking devices are arranged at two ends of the vacuum pipeline; a vacuum pump room is arranged on the vacuum pipeline; and cement is used for blocking the positions, which are positioned above the reinforced concrete foundation member, on the two outer sides of the vacuum pipeline.
Specifically, the base body is a leveled roadbed, and a terrace reinforced concrete foundation piece is arranged on the leveled roadbed; the base body is a bridge step with a smooth upper surface, and a bridge foundation reinforced concrete foundation piece is installed on the bridge step.
Specifically, electric wire supports are uniformly distributed at positions close to the top in the vacuum pipeline, power supply bare wires penetrating through the vacuum pipeline are installed at the bottom of each electric wire support, a transition rod driving device is installed on one side of the inner blocking working bin, a transition rod is arranged below the transition rod driving device, and the transition rod can rotate 90 degrees in the horizontal direction under the action of the transition rod driving device and can be perpendicular to the power supply bare wires or connected with the power supply bare wires; the wire bracket, the transition rod, the vacuum pipeline and other accessories are insulators, and parts of the accessories are conventional materials in the field and are not listed; when the train normally runs, the top of the train is provided with an electric bow, the transition rod is communicated with a power supply bare wire under the action of the transition rod driving device, and a conductive sliding plate on the electric bow can normally slide through the transition rod; when the inner plugging plate needs to be closed, the transition rod rotates 90 degrees under the action of the transition rod driving device, so that the inner plugging plate can smoothly fall to close the vacuum pipeline; the train adopts the subregion power supply, separates with the insulator, and the outage does not influence the train in the very short time.
Specifically, a pipeline door is arranged on the side wall of the vacuum pipeline and used as a safety emergency channel, a boss plane is pressed on the side wall of the vacuum pipeline provided with the pipeline door, the pipeline door is hinged with the boss plane through a hinge, and the pipeline door is opened outwards; the inside and outside sides of the pipeline door are respectively provided with a hand wheel for opening the door, a sealing gasket is arranged at the joint of the pipeline door and the shaft end of the hand wheel, and a door sealing gasket is arranged at the joint of the pipeline door and the plane of the boss; rotating a hand wheel to control the cams to be positioned at different heights, wherein the cams are abutted against the lock bolts, and lock bolt return springs are arranged between the lock bolts and the cams;
when the vacuum pipeline is in a vacuum state, the pipeline door has several tons of pressure, and the pipeline door cannot be opened; when the air pressure in and out of the vacuum pipeline is equal, the pipeline door can be opened through the hand wheel, and three lock bolts controlled by the cam are arranged for safety.
Specifically, the reinforced concrete foundation parts positioned at two sides of the track base plate in the inner blocking working bin are fixedly provided with mutually symmetrical vertical supports, the top ends of the two vertical supports are provided with a transverse support, the inner sides of the vertical supports are provided with vertical guide grooves, an inner plugging plate is arranged in the vertical guide groove, strip-shaped guide blocks capable of moving up and down in the vertical guide groove are arranged on two sides of the inner plugging plate, a support rod is arranged at the middle position of the vertical height of the strip-shaped guide block and extends outwards from the guide groove, a rectangular through groove is arranged at the part of the support rod positioned at the outer side of the vertical bracket, a support column which is vertical to the transverse support and is horizontally arranged is fixedly arranged in the rectangular through groove, a vertical hydraulic cylinder is arranged in the reinforced concrete foundation member outside the vertical support, the vertical hydraulic cylinder comprises a cylinder barrel and a piston rod, the cylinder barrel is fixedly arranged in the reinforced concrete foundation member, and the top of the piston rod is movably sleeved outside the support column;
the outer plugging device comprises an outer plugging plate, the outer plugging plate is hinged with the vacuum pipeline, the reinforced concrete foundation parts on two sides of the vacuum pipeline are provided with obliquely arranged tension hydraulic cylinders, the tension hydraulic cylinders are rotatably connected with the outer plugging plate through pull rods, and the outer plugging plate is turned towards one side far away from the vacuum pipeline from a vertical state under the action of the tension hydraulic cylinders;
the vertical hydraulic cylinder and the pull hydraulic cylinder are controlled by a hydraulic pump station, and the hydraulic pump station is powered by an emergency power supply; the inner plugging plate and the outer plugging plate are made of high-strength cold plates, and sealing rubber pads are wrapped on the surfaces of the inner plugging plate and the outer plugging plate.
Specifically, the longitudinal section of the vacuum pipeline is a part of an ellipse, and an elliptical interface has better external pressure resistance.
Specifically, evenly set up the strengthening rib that the circular arc groove formed of colding pressing on the upper tube way prefab, can increase vacuum pipe's intensity, can also be used for installing light etc. simultaneously.
Specifically, after the upper pipeline prefabricated part is welded and fixed on the concave table, the connecting part of the inner wall of the upper pipeline prefabricated part and the L-shaped support leg forms a smooth inner wall surface; go up the outside bellied arc wall in end of pipeline prefab, the interior upper tube way prefab of assembled adjacent installation passes through the arc wall and butts against with the part that does not set up the arc wall, and the arc wall depth degree of groove is the same with the wall thickness of upper tube way prefab, makes the internal face of its junction keep level and smooth.
Specifically, the positions of the two sides of the track base plate in the reinforced concrete foundation member are provided with radiating fins, so that heat dissipation can be facilitated, the heat dissipation performance can be enhanced, and heat in a vacuum pipeline is reduced.
The two ends of the vacuum pipeline are provided with pressure increasing and reducing transition areas, the outer blocking device is closed after the train enters from the beginning at normal pressure, the pipeline is decompressed to a standard value, the inner blocking plate of the inner blocking working bin at the corresponding position is opened, and the train drives into the vacuum pipeline; when the train reaches the pressure increasing and decreasing transition region at the other end, the train stops, the inner plugging plate of the inner plugging working bin at the corresponding position is closed, the pressure of the pressure increasing and decreasing transition region is increased to be equal to the atmospheric pressure, the outer plugging device at the end is opened, and the train is pulled out.
The electromagnetic valve for controlling the air inlet and the first closing device of the inner blocking working bin are provided with an emergency power supply besides a line power supply.
At the corner, the centrifugal force is balanced by the component force of gravity through speed reduction and roadbed inclination; and accurately designing each track substrate according to actual conditions.
Compared with the prior art, the invention has the following advantages: the mounting assembly of the vacuum pipeline is reasonable in structure arrangement, and is convenient for batch production; the reasonable arrangement of the joints can ensure the installation flatness, and a plurality of welding lines are arranged inside and outside the vacuum pipeline at the lap joint, so that the sealing property can be ensured; after the adjacent segmental vacuum pipeline assemblies are installed, the segmental vacuum pipeline assemblies are fixed by the tensioning bolts, so that the connection strength of the segmental vacuum pipeline assemblies can be increased, and the segmental vacuum pipeline assemblies are prevented from being pulled apart when expanded with heat and contracted with cold; the outer side surface of the vacuum pipeline is provided with an upper pulling piece which is matched with a lower pulling piece pre-embedded in the reinforced concrete foundation piece and is tensioned by a stud bolt assembly, so that the rigidity and the side wind pressure resistance of the vacuum pipeline can be improved; the pipeline door can be arranged to realize personnel withdrawal or maintenance personnel entry in emergency; the arrangement of the inner blocking working bin can realize braking of the train in a power failure state, and the safety of passengers and workers is ensured; the vacuum pump room is arranged, so that the vacuum pump is communicated with the vacuum pipeline, a vacuum degree calibration value is set, the vacuum pump room can be automatically started to pump air according to actual requirements, and the vacuum degree in the vacuum pipeline is ensured to be lower than the calibration value; pressure increasing and decreasing transition areas are arranged at two ends of the vacuum pipeline so as to realize safe driving in and out of the train; the installation vacuum pipeline is obtained by combining the sectional vacuum pipeline assemblies, the length can be adjusted according to actual requirements, and the smoothness of the line can be ensured by ensuring the construction quality; can effectively deal with various emergencies and has high safety.
Drawings
Fig. 1 is a schematic structural view of the present invention.
FIG. 2 is a sectional view of a vacuum line A-A in example 1.
Fig. 3 is a sectional view B-B.
Figure 4 is a side view of the inner plug working chamber.
Fig. 5 is a front view of the inner blocking working bin.
Fig. 6 is a schematic view of the structure of the duct gate.
Fig. 7 is a side view of the duct door.
FIG. 8 is an elevation view of an outer upper duct preform.
FIG. 9 is a side view of an outer upper duct preform.
FIG. 10 is an elevation view of a lower duct preform.
FIG. 11 is a side view of a lower duct preform.
Fig. 12 is a schematic structural diagram of a transition rod connection power supply bare wire.
Fig. 13 is a schematic structural view of the transition rod perpendicular to the power supply bare wire.
FIG. 14 is a sectional view of a vacuum line A-A in example 2.
Detailed Description
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. 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.
Example 1
As shown in fig. 1 to 13, a vacuum pipe and mounting assembly for a high-speed train includes a reinforced concrete foundation 11 mounted on a flat base, a vacuum pipe 1 mounted on the reinforced concrete foundation 11, a rail base plate 12 provided on the reinforced concrete foundation 11 in the vacuum pipe 1, and a rail 121 provided on the rail base plate 12; an emergency air inlet 5 controlled by an electromagnetic valve is arranged on the vacuum pipeline 1; the vacuum pipeline 1 is obtained by splicing a section type vacuum pipeline assembly, the section type vacuum pipeline assembly comprises a lower pipeline prefabricated part and an upper pipeline prefabricated part 15, the lower pipeline prefabricated part is symmetrically arranged on two sides of a reinforced concrete foundation part 11, the lower pipeline prefabricated part comprises L-shaped supporting legs 161 at the bottom, the bottoms of the L-shaped supporting legs 161 are arranged in the reinforced concrete foundation part 11, L-shaped supports 162 are formed by outwards extending the upper parts of the L-shaped supporting legs 161, corners of the L-shaped supports 162 are concave platforms 163, strip-shaped grooves 155 matched with the concave platforms 163 are arranged at the bottom of the upper pipeline prefabricated part 15, the strip-shaped grooves 155 of the upper pipeline prefabricated part 15 are fixedly welded to the concave platforms 163 after being butted, and then parallel inner straight welding seams 141 and parallel outer straight welding seams 151 are obtained; a plurality of groups of tensioning bolt brackets 7 which are oppositely arranged are uniformly distributed on the outer wall of the adjacent upper pipeline prefabricated part 15, and the tensioning bolt brackets 7 which are correspondingly arranged are fixed by tensioning bolts 71; the part of the reinforced concrete foundation 11, which is positioned outside the L-shaped support leg 161, is provided with a pull-down piece, the pull-down piece comprises an L-shaped support 811 arranged inside the reinforced concrete foundation 11, the upper end of the L-shaped support is positioned above the reinforced concrete foundation 11, and the upper end of the pull-down piece extends towards the segmented vacuum pipeline assembly to form a lower fixing plate 812 which is obliquely arranged; an upper pulling piece is fixed on the side wall of the upper pipeline prefabricated part 15, the upper pulling piece comprises a base 821 fixedly welded with the upper pipeline prefabricated part 15, the bottom of the base 821 extends outwards to form an upper fixing plate 822 arranged in parallel with a lower fixing plate, and the lower fixing plate 812 and the upper fixing plate 822 are connected and fixed through a tensioning stud bolt assembly 83;
an inner blocking working bin 2 is arranged in the middle of the vacuum pipeline 1 at intervals of a preset running length, and outer blocking devices are arranged at two ends of the vacuum pipeline 1; the vacuum pipeline 1 is provided with a vacuum pump room 3, the vacuum pump room is a mature machine with a standard technology, and the number and the distribution mode of the vacuum pump rooms are determined according to the length of a circuit by selecting the vacuum pump room according to the data such as the air displacement required by design, the minimum air pressure of automatic start and the like; domestic common-grade vacuum pumps can automatically start to pump air more than five thousandth, and the construction cost is greatly increased by improving the vacuum degree; cement blocks 161 are used at positions above the reinforced concrete foundation 11 on both outer sides of the vacuum pipes 3, and as shown in fig. 2, the height of the cement blocks 161 is located at the upper position of the L-shaped brackets 162;
the base body is a leveled roadbed, and a terrace reinforced concrete foundation part is arranged on the leveled roadbed;
the electric wire support 91 is uniformly distributed at a position close to the top in the vacuum pipeline 1, the power supply bare wire 9 penetrating through the vacuum pipeline 1 is installed at the bottom of the electric wire support 91, a transition rod driving device 93 is installed at one side of the inner plug working chamber 3, a transition rod 92 is arranged below the transition rod driving device 93, and the transition rod 92 can rotate 90 degrees in the horizontal direction under the action of the transition rod driving device 93 and can be perpendicular to the power supply bare wire 9 or connected with the power supply bare wire 9; the wire bracket 91, the transition rod 92, the vacuum pipeline 1 and other fittings are insulators, and parts of the fittings are made of materials conventional in the field and are not listed; when the train normally runs, the top of the train is provided with the pantograph, the transition rod 92 is communicated with the power supply bare wire 9 under the action of the transition rod driving device 93, and the conductive sliding plate on the pantograph can normally slide through the transition rod 92; when the inner plugging plate 33 needs to be closed, the transition rod 92 rotates 90 degrees under the action of the transition rod driving device 93, so that the inner plugging plate 33 can smoothly fall down to close the vacuum pipeline 1; the train adopts the subregion power supply, separates with the insulator, and the outage does not influence the train in the very short time.
The side wall of the vacuum pipeline 1 is provided with a pipeline door 4 as a safety emergency channel, the side wall of the vacuum pipeline 1 provided with the pipeline door 4 is provided with a boss plane (not shown in the figure) in a pressing mode, the pipeline door 4 is hinged with the boss plane through a hinge 42, and the pipeline door 4 is opened outwards; handwheels 41 for opening the door are respectively arranged on the inner side and the outer side of the pipeline door 4, a sealing gasket 46 is arranged at the joint of the pipeline door 4 and the shaft end of the handwheel, and a door sealing gasket 47 is arranged at the joint of the pipeline door 4 and the plane of the boss; rotating the hand wheel 41 to control the cam 45 to be positioned at different heights, wherein the cam 45 abuts against the lock bolt 44, and a lock bolt return spring 43 is arranged between the lock bolt 44 and the cam 45;
when the vacuum pipeline 1 is in a vacuum state, the pipeline door 4 has several tons of pressure, and the pipeline door 4 cannot be opened; when the inside and outside air pressures of the vacuum duct 1 are equal, the duct door 4 can be opened by the hand wheel 41, and three latches 44 controlled by the cam 45 are provided for security.
The reinforced concrete foundation parts 11 positioned at two sides of the track substrate 12 in the inner blocking working bin 3 are fixedly provided with vertical supports 31 which are mutually symmetrical, the top ends of the two vertical supports 31 are provided with transverse supports 32, the inner sides of the vertical supports 31 are provided with vertical guide grooves (not shown in the figure), inner blocking plates 33 are arranged in the vertical guide grooves, strip-shaped guide blocks (not shown in the figure) which can move up and down in the vertical guide grooves are arranged at two sides of the inner blocking plates 33, the middle positions of the vertical heights of the strip-shaped guide blocks extend out of the guide grooves and are provided with support rods, the parts of the support rods positioned at the outer sides of the vertical supports are provided with rectangular through grooves, support columns which are perpendicular to and horizontally arranged with the transverse supports 32 are fixedly arranged in the rectangular through grooves, the reinforced concrete foundation parts 11 at the outer sides of the vertical supports 31 are internally provided with vertical hydraulic cylinders which comprise cylinder barrels 34 and piston rods 35, the cylinder barrels 34 are fixed in the reinforced concrete foundation parts 11, the top of the piston rod 35 is movably sleeved outside the support column;
the outer plugging device comprises an outer plugging plate 61, the outer plugging plate 61 is hinged with the vacuum pipeline 1, the reinforced concrete foundation pieces 11 on two sides of the vacuum pipeline 1 are provided with obliquely arranged tension hydraulic cylinders 63, the tension hydraulic cylinders 63 are rotatably connected with the outer plugging plate 61 through pull rods 62, and the outer plugging plate 61 is turned towards one side far away from the vacuum pipeline from a vertical state under the action of the tension hydraulic cylinders 63;
the vertical hydraulic cylinder and the pull hydraulic cylinder 63 are controlled by a hydraulic pump station, and the hydraulic pump station is powered by an emergency power supply; the inner plugging plate 33 and the outer plugging plate 61 are made of high-strength cold plates, and sealing rubber pads are wrapped on the surfaces of the inner plugging plate 33 and the outer plugging plate 61.
Reinforcing ribs 152 formed by cold pressing arc grooves are uniformly arranged on the upper pipeline prefabricated part 15, so that the strength of the vacuum pipeline 1 can be increased, and meanwhile, illuminating lamps and the like can be installed as required; after the upper pipe prefabricated member 15 is welded and fixed on the concave platform 163, a smooth inner wall surface is formed at the connecting part of the inner wall of the upper pipe prefabricated member 15 and the L-shaped supporting leg 161; the tail end of the upper pipeline prefabricated part 15 is provided with an arc-shaped groove 153 protruding outwards, the assembled and adjacently installed inner upper pipeline prefabricated part is abutted with a part without the arc-shaped groove through the arc-shaped groove 153 (as shown in fig. 3), the inside and the outside of the abutted part are respectively provided with a welding seam 154 with the same shape as the inside and the outside of the abutted part, the depth of the arc-shaped groove 153 is the same as the wall thickness of the upper pipeline prefabricated part 15, and the inner wall surface of the joint of the arc-shaped groove 153 is kept flat; and the parts connected with the tension bolt brackets 7 are welded and fixed.
The positions, located on two sides of the track base plate 12, in the reinforced concrete foundation 11 are provided with the radiating fins 121, so that heat dissipation can be facilitated, the radiating performance can be enhanced, and heat in the vacuum pipeline 1 is reduced.
The two ends of the vacuum pipeline 1 are provided with pressure increasing and reducing transition areas, the outer blocking device is closed after the train enters from the beginning at normal pressure, the pipeline is decompressed to a standard value, the inner blocking plate 33 of the inner blocking working cabin at the corresponding position is opened, and the train drives into the vacuum pipeline 1; when the train reaches the pressure increasing and decreasing transition region at the other end, the train stops, the inner blocking plate 33 of the inner blocking working bin 3 at the corresponding position is closed, the pressure of the pressure increasing and decreasing transition region is increased to be equal to the atmospheric pressure, the outer blocking device at the end is opened, and the train is driven out.
The electromagnetic valve for controlling the air inlet and the first closing device of the inner blocking working bin are provided with an emergency power supply besides a line power supply.
At the corner, the centrifugal force is balanced by the component force of gravity through speed reduction and roadbed inclination; and accurately designing each track substrate according to actual conditions.
When the vacuum pipeline mounting assembly is used, the vacuum pipeline mounting assembly is reasonable in structure arrangement, and batch production is facilitated; the reasonable arrangement of the joints can ensure the installation flatness, and a plurality of welding lines are arranged inside and outside the vacuum pipeline at the lap joint, so that the sealing property can be ensured; after the adjacent segmental vacuum pipeline assemblies are installed, the segmental vacuum pipeline assemblies are fixed by the tensioning bolts, so that the connection strength of the segmental vacuum pipeline assemblies can be increased, and the segmental vacuum pipeline assemblies are prevented from being pulled apart when expanded with heat and contracted with cold; the outer side surface of the vacuum pipeline is provided with an upper pulling piece which is matched with a lower pulling piece pre-embedded in the reinforced concrete foundation piece and is tensioned by a stud bolt assembly, so that the rigidity and the side wind pressure resistance of the vacuum pipeline can be improved; the pipeline door can be arranged to realize personnel withdrawal or maintenance personnel entry in emergency; the arrangement of the inner blocking working bin can realize braking of the train in a power failure state, and the safety of passengers and workers is ensured; the vacuum pump room is arranged, so that the vacuum pump is communicated with the vacuum pipeline, a vacuum degree calibration value is set, the vacuum pump room can be automatically started to pump air according to actual requirements, and the vacuum degree in the vacuum pipeline is ensured to be lower than the calibration value; pressure increasing and decreasing transition areas are arranged at two ends of the vacuum pipeline so as to realize safe driving in and out of the train; the installation vacuum pipeline is obtained by combining the sectional vacuum pipeline assemblies, the length can be adjusted according to actual requirements, and the smoothness of the line can be ensured by ensuring the construction quality; can effectively deal with various emergencies and has high safety.
Example 2
On the basis of the embodiment 1, as shown in fig. 14, the longitudinal section of the vacuum pipe 1 is a part of an ellipse, and the ellipse interface has better external pressure resistance.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (10)
1. A vacuum pipeline for a high-speed train comprises a reinforced concrete foundation member arranged on a flat base body, wherein the reinforced concrete foundation member is provided with the vacuum pipeline; an emergency air inlet hole controlled by an electromagnetic valve is arranged on the vacuum pipeline; the vacuum pipeline is obtained by splicing sectional vacuum pipeline assemblies, each sectional vacuum pipeline assembly comprises a lower pipeline prefabricated part and an upper pipeline prefabricated part, the lower pipeline prefabricated parts are symmetrically arranged on two sides of a reinforced concrete foundation part, each lower pipeline prefabricated part comprises L-shaped supporting legs at the bottom, the bottoms of the L-shaped supporting legs are arranged in the reinforced concrete foundation part, L-shaped supports are formed by extending outwards above the L-shaped supporting legs, and concave platforms are arranged at the corners of the L-shaped supports; the bottom of the upper pipeline prefabricated part is provided with a strip-shaped groove matched with the concave table, and the strip-shaped groove of the upper pipeline prefabricated part is welded and fixed after being butted with the concave table to obtain a parallel inner straight welding line and a parallel outer straight welding line; a plurality of groups of tensioning bolt brackets which are oppositely arranged are uniformly distributed on the outer wall of the upper pipeline prefabricated part adjacent to the upper pipeline prefabricated part, and the corresponding tensioning bolt brackets are fixed by tensioning bolts; the part of the reinforced concrete foundation piece, which is positioned outside the L-shaped support leg, is provided with a pull-down piece, the pull-down piece comprises an L-shaped support arranged inside the reinforced concrete foundation piece, the upper end of the L-shaped support is positioned above the reinforced concrete foundation piece, and the upper end of the pull-down piece extends towards the segmented vacuum pipeline assembly to form a lower fixing plate which is obliquely arranged; an upper pulling piece is fixed on the side wall of the upper pipeline prefabricated part and comprises a seat body fixedly welded with the upper pipeline prefabricated part, the bottom of the seat body extends outwards to form an upper fixing plate arranged in parallel with a lower fixing plate, and the lower fixing plate and the upper fixing plate are connected and fixed through a tensioning stud bolt assembly;
an inner blocking working bin is arranged in the middle of the vacuum pipeline every other preset running length, and outer blocking devices are arranged at two ends of the vacuum pipeline; a vacuum pump room is arranged on the vacuum pipeline; and cement is used for blocking the positions, which are positioned above the reinforced concrete foundation member, on the two outer sides of the vacuum pipeline.
2. The vacuum pipe according to claim 1, wherein the base body is a leveled road base on which a reinforced concrete foundation member for a floor is installed.
3. The vacuum pipe for high-speed trains according to claim 1, wherein the base body is a bridge stirrup with a flat upper surface, and a bridge foundation reinforced concrete foundation member is installed on the bridge stirrup.
4. The vacuum pipeline for the high-speed train as claimed in claim 1, wherein the wire support is uniformly distributed at a position near the top in the vacuum pipeline, a power supply bare wire penetrating through the vacuum pipeline is installed at the bottom of the wire support, a transition rod driving device is installed at one side of the inner blocking working chamber, a transition rod is arranged below the transition rod driving device, and the transition rod can rotate 90 degrees in the horizontal direction under the action of the transition rod driving device and can be perpendicular to the power supply bare wire or connected with the power supply bare wire; the wire support, the transition rod and the vacuum pipeline are all insulators.
5. The vacuum pipeline for the high-speed train as claimed in claim 1, wherein the side wall of the vacuum pipeline is provided with a pipeline door as a safety emergency channel, the side wall of the vacuum pipeline provided with the pipeline door is provided with a boss plane in a pressing mode, the pipeline door is hinged with the boss plane through a hinge, and the pipeline door is opened outwards; the inside and outside sides of the pipeline door are respectively provided with a hand wheel for opening the door, a sealing gasket is arranged at the joint of the pipeline door and the shaft end of the hand wheel, and a door sealing gasket is arranged at the joint of the pipeline door and the plane of the boss; the hand wheel is rotated to control the cams to be positioned at different heights, the cams are abutted against the lock bolts, and lock bolt return springs are arranged between the lock bolts and the cams.
6. The vacuum pipeline for the high-speed train as claimed in claim 1, wherein the reinforced concrete base members at both sides of the track base plate in the inner blocking working bin are fixedly provided with vertical brackets which are symmetrical to each other, the top ends of the two vertical brackets are provided with transverse brackets, the inner sides of the vertical brackets are provided with vertical guide grooves, inner blocking plates are arranged in the vertical guide grooves, both sides of the inner blocking plates are provided with strip-shaped guide blocks which can move up and down in the vertical guide grooves, the middle positions of the vertical heights of the strip-shaped guide blocks extend out of the guide grooves and are provided with support rods, the parts of the support rods, which are positioned at the outer sides of the vertical brackets, are provided with rectangular through grooves, support columns which are perpendicular to the transverse brackets and are horizontally arranged are fixedly arranged in the rectangular through grooves, the reinforced concrete base members at the outer sides of the vertical brackets are internally provided with vertical hydraulic cylinders, the vertical hydraulic cylinders comprise cylinder barrels and piston rods, and the cylinder barrels are fixedly arranged in the reinforced concrete base members, the top of the piston rod is movably sleeved outside the support column;
the outer plugging device comprises an outer plugging plate, the outer plugging plate is hinged with the vacuum pipeline, the reinforced concrete foundation parts on two sides of the vacuum pipeline are provided with obliquely arranged tension hydraulic cylinders, the tension hydraulic cylinders are rotatably connected with the outer plugging plate through pull rods, and the outer plugging plate is turned towards one side far away from the vacuum pipeline from a vertical state under the action of the tension hydraulic cylinders;
the vertical hydraulic cylinder and the pull hydraulic cylinder are controlled by a hydraulic pump station, and the hydraulic pump station is powered by an emergency power supply; the inner plugging plate and the outer plugging plate are made of high-strength cold plates, and sealing rubber pads are wrapped on the surfaces of the inner plugging plate and the outer plugging plate.
7. The vacuum pipe for a high-speed train as claimed in claim 1, wherein the vacuum pipe has a longitudinal section of a part of an oval shape.
8. The vacuum pipeline for the high-speed train as claimed in claim 1, wherein reinforcing ribs formed by cold-pressing arc grooves are uniformly arranged on the upper pipeline prefabricated member.
9. The vacuum pipeline for the high-speed train as claimed in claim 1, wherein after the upper pipeline prefabricated member is welded and fixed on the concave table, a smooth inner wall surface is formed at a connecting part of the inner wall of the upper pipeline prefabricated member and the L-shaped support leg; go up the outside bellied arc wall in end of pipeline prefab, the interior upper tube way prefab of assembled adjacent installation passes through the arc wall and butts against with the part that does not set up the arc wall, and the arc wall depth degree of groove is the same with the wall thickness of upper tube way prefab, makes the internal face of its junction keep level and smooth.
10. The vacuum pipe for high-speed trains according to claim 1, wherein heat radiating fins are provided in the reinforced concrete base member at positions on both sides of the rail base plate.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010063819.8A CN111235966B (en) | 2020-01-20 | 2020-01-20 | Vacuum pipeline and installation assembly for high-speed train |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010063819.8A CN111235966B (en) | 2020-01-20 | 2020-01-20 | Vacuum pipeline and installation assembly for high-speed train |
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| CN111235966A CN111235966A (en) | 2020-06-05 |
| CN111235966B true CN111235966B (en) | 2022-02-11 |
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