A mobile rail cooling device for high-speed railway continuous welded rail

Abstract

The present invention discloses a mobile rail cooling device for high-speed railway seamless lines, which includes an upper plate arranged at an equal distance from the rail. A refrigeration tank is arranged on the upper plate. Upper covers are arranged at both ends of the upper plate. A conveying cavity is formed in the upper cover. The upper cover is connected with two relatively arranged cooling boxes through a locking component. A cooling cavity is formed in the cooling box along the axis. A plurality of mounting openings penetrating the side wall are formed in the side wall of the cooling cavity, and driving wheels are arranged in the mounting openings. In the present invention, a high-pressure refrigerant impeller is generated by a refrigeration component to make the driving wheels rotate, thereby driving the whole device to move. The driving wheels in contact with the rail can effectively cool the rail, realizing the mobile cooling of the rail, thereby effectively improving the cooling efficiency to reduce the occurrence of phenomena such as rail buckling or track buckling and expansion on high-speed railway seamless lines.

Description

Technical Field

[0001] The present invention relates to the technical field of railway line rail cooling, and particularly to a mobile rail cooling device for high-speed railway seamless lines. Background Art

[0002] High-speed railways generally adopt seamless lines. The seamless lines eliminate the gaps between rails, greatly reducing the wheel-rail impact force, improving the train comfort, and reducing equipment wear. However, with the disappearance of the rail gaps, when the temperature of the rails changes, they cannot freely expand and contract longitudinally, thus generating huge temperature stresses inside the rails, which becomes one of the causes of track diseases. In severe cases, problems such as rail buckling and track creep will occur, seriously affecting the operation safety of high-speed railways.

[0003] Currently, the cooling of rails is carried out manually by laying covers on the rails and repeatedly watering. The Yunnan Zhaotong Track Maintenance Section even adopted the method of manually sliding ice blocks to cool the rails, which has attracted wide attention from the media for railway maintenance work.

[0004] In view of the fact that the traditional manual method has high requirements for the labor intensity of workers, and the time required to reduce the rail temperature is long, its efficiency is very low, the workload is extremely large, and the effect is not good. During the cooling process, it is impossible to quickly and effectively cool a long track, and there are many restrictive factors for the cooling effect. Therefore, a mobile rail cooling device for high-speed railway seamless lines is proposed to solve the deficiencies of the prior art. Summary of the Invention

[0005] The purpose of the present invention is to solve the problems in the prior art, and a mobile rail cooling device for high-speed railway seamless lines is proposed.

[0006] To achieve the above purpose, the present invention adopts the following technical solutions:

[0007] A mobile rail cooling device for high-speed railway seamless lines includes an upper plate arranged at an equal distance from the rail. It is characterized in that a refrigeration tank is arranged on the upper plate, upper covers are arranged at both ends of the upper plate, a refrigerant cavity is opened in the upper cover, the refrigerant output end of the refrigeration tank is connected to the refrigerant cavity through a conveying channel, a cooling plate in contact with the rail is arranged at the bottom of the refrigerant cavity, the upper cover is connected to two relatively arranged cooling boxes through a locking component, a cooling cavity is opened in the cooling box, a plurality of mounting openings penetrating the side wall are opened on the side wall of the cooling cavity facing the rail, a driving wheel is arranged in each mounting opening, a channel for the refrigerant to enter the driving wheel from the refrigerant cavity is opened between the upper cover and the cooling box, and a return channel for receiving the refrigerant discharged after passing through the driving wheel is opened in the cooling box, and the return channel is connected to the refrigeration tank through a return pipe fitting.

[0008] Preferably, a refrigeration assembly is provided inside the refrigeration tank. The refrigeration assembly includes a refrigerator connected to an external power supply provided inside the refrigeration tank. The refrigerator is connected to an air delivery pipe for delivering refrigerant through an air delivery pump. An inner hole is formed in the upper plate as a delivery channel.

[0009] Preferably, an impeller is provided inside the driving wheel. A rotating shaft is provided at the center of the impeller. Both ends of the rotating shaft are installed in the top plate and the bottom plate of the cooling box.

[0010] Preferably, impact ports are formed in an inclined manner on the inner wall of the cooling cavity above the driving wheel. A mating port adapted to the impact ports is formed at the bottom of the refrigerant cavity. A sealing ring is provided on the contact surface between the cooling box and the upper cover plate around the mating port.

[0011] Preferably, the return channel includes a return box. The return box is connected to the refrigeration tank through return pipe fittings. A return cavity communicating with the cooling cavity is formed inside the return box. A communication channel is formed in the bottom plate of the cooling box to communicate the cavity area at the bottom of the driving wheel and the return cavity.

[0012] Preferably, the buckle assembly includes docking blocks fixedly connected to both sides of the cooling box. A U-shaped opening is formed in the docking block. A fastening bolt is threadedly connected to the inner wall of the U-shaped opening.

[0013] Preferably, docking strips are connected to the side walls of the upper cover plate through fastening blocks. A rectangular fastening opening adapted to the U-shaped opening is formed in the docking strip.

[0014] Preferably, sealing blocks for sealing the upper and lower openings of the driving wheel are provided on both the upper and lower inner walls of the installation opening.

[0015] Preferably, exhaust holes are formed on the wheel surface of the driving wheel and the temperature reduction plate.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0017] The buckle assembly is used to assemble and connect the cooling box and the upper cover plate, so that a driving wheel is provided on the cooling box to abut against both sides of the rail. The refrigeration assembly in the refrigeration tank provided on the upper plate will generate refrigeration to produce high-pressure refrigerant and deliver it into the upper cover plate. The temperature reduction plate provided on the upper cover plate will initially cool the upper surface of the track. And the driving wheel provided in the cooling box will rotate under the power of the high-pressure refrigerant acting on the impeller, thereby driving the entire device to move. The device will move on the rail, and the driving wheel in contact with the rail will effectively cool the rail, realizing mobile cooling of the rail, thereby effectively improving the cooling efficiency and reducing the occurrence of phenomena such as rail buckling or thermal expansion and track buckling on the seamless line of high-speed railways. Description of the Drawings

[0018] Figure 1Schematic three-dimensional structure diagram of a mobile rail cooling device for high-speed railway seamless tracks proposed by the present invention;

[0019] Figure 2 is Figure 1 The enlarged structural diagram at position A in;

[0020] Figure 3 Schematic front cross-sectional structure diagram of a mobile rail cooling device for high-speed railway seamless tracks proposed by the present invention;

[0021] Figure 4 is Figure 3 The enlarged structural diagram at position B in

[0022] Figure 5 Schematic structure diagram of the driving wheel in a mobile rail cooling device for high-speed railway seamless tracks proposed by the present invention;

[0023] Figure 6 Schematic structure diagram of the locking component in a mobile rail cooling device for high-speed railway seamless tracks proposed by the present invention.

[0024] In the figure: 1 upper plate, 2 refrigeration tank, 3 upper cover plate, 4 refrigerant chamber, 5 cooling plate, 6 cooling box, 7 cooling chamber, 8 driving wheel, 9 return pipe fitting, 10 refrigerator, 11 conveying channel, 12 cavity area, 13 rotating shaft, 14 impeller, 15 sealing block, 16 impact port, 17 mating port, 18 return box, 19 return chamber, 20 docking block, 21 fastening bolt, 22 docking strip. Detailed implementation manners

[0025] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0026] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "inner", "outer", "top / bottom end", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0027] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "mounted / connected", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0028] Reference Figures 1 - 6 , a high-speed railway seamless line movable rail cooling device, comprising an upper plate 1 arranged equidistantly from the rail, the upper plate 1 enables the movement of both sides to be performed synchronously, a refrigeration tank 2 is arranged on the upper plate 1, a refrigeration assembly is arranged in the refrigeration tank 2, further, the refrigeration assembly comprises a refrigerator 10 with an external power supply arranged in the refrigeration tank 2, wherein the refrigeration assembly comprises a heat exchanger, a compressor and other machines, which are prior art and are not described in detail here, the refrigerator 10 is connected to an air pipeline for conveying a refrigerant through an air pump, the refrigerant is pressurized by the air pump, and the pressurized refrigerant can realize the driving device to move on the rail, an inner hole is provided in the upper plate 1 to form a conveying channel 11 for conveying the refrigerant, upper cover plates 3 are provided at both ends of the upper plate 1, and a refrigerant cavity 4 connected to the conveying channel 11 is provided on the upper cover plate 3;

[0029] A cooling plate 5 is provided at the contact part of the bottom of the refrigerant cavity 4 with the rail. It should be noted that the upper plate 1 and the upper cover plate 3 are both heat-insulating materials with poor heat conduction. The upper cover plate 3 is connected with two relatively arranged cooling boxes 6 through a locking component. A cooling cavity 7 is arranged in the cooling box 6 along the axis. A plurality of mounting openings penetrating the side wall are arranged on the side wall of the cooling cavity 7 facing the rail. A driving wheel 8 is arranged in each mounting opening. An impeller 14 is fixedly installed in the driving wheel 8. A shaft hole is arranged at the center of the impeller 14. The driving wheel 8 with the impeller 14 is sleeved on the rotating shaft 13. The two ends of the rotating shaft 13 are fixedly connected with the top plate and the bottom plate of the cooling box 6. Of course, the rotating shaft 13, the impeller 14 and the driving wheel 8 can also be an integrally fixed structure. The two ends of the rotating shaft 13 are installed in the top plate and the bottom plate of the cooling box 6 through bearings. The impeller 14 is arranged in an inclined arc shape, and its angle is perpendicular to the impact opening 16 arranged on the cooling cavity 7. Under the action of the inclined impact opening 16, the refrigerant will be quickly discharged. The obliquely ejected refrigerant will directly act on the impeller 14 arranged in an arc shape on the driving wheel 8. The impeller 14 will be impacted by the refrigerant and drive the connected driving wheel 8 to rotate. Sealing blocks 15 for sealing the upper and lower openings of the driving wheel 8 are arranged on the upper and lower inner walls of the mounting opening. The sealing blocks 15 can completely cover the upper and lower openings of the driving wheel 8 to prevent the refrigerant from overflowing. Of course, it can also not be completely sealed, and part of the refrigerant can flow from the gap between the sealing block 15 and the driving wheel 8 to the rail, which can also achieve the purpose of cooling the rail. Further, an inclined impact opening 16 is arranged on the inner wall of the cooling cavity 7 above the driving wheel 8. A matching opening 17 adapted to the impact opening 16 is arranged at the bottom of the refrigerant cavity 12. A sealing ring is arranged on the contact surface between the cooling box 6 and the upper cover plate 3 around the matching opening 17. A return box 18 is arranged on the side wall of the cooling box 6. The return box 18 is connected with the refrigeration tank 2 through a return pipe fitting 9. A return cavity 19 communicating with the cooling cavity 7 is arranged in the return box 18. The return box 18 and the cooling box 6 can be integrally designed to reduce refrigerant leakage. A communication channel connecting the cavity area 12 at the bottom of the driving wheel 8 and the return cavity 19 is arranged in the bottom plate of the cooling box 6 to discharge the refrigerant and realize the return flow.

[0030] Of course, the return box 18 can also be arranged below the cooling box 6. The return box 18 can also not be arranged, and the cavity area 12 at the bottom plate of the cooling box 6 can be directly connected to the return pipe fitting 9, which can also achieve the purpose of refrigerant recovery.

[0031] The refrigeration tank 2 is connected to the side wall of the cooling chamber 7 through a reflux pipe fitting 9; the upper cover plate 3 is connected to the cooling box 6 through a locking component. The locking component includes docking blocks 20 fixedly connected to both sides of the cooling box 6. A U-shaped opening is provided on the docking block 20, and a fastening bolt 21 is threadedly connected to the inner wall of the U-shaped opening. Docking strips 22 are connected to the side walls of the upper cover plate 3 through fastening blocks. A rectangular fastening opening adapted to the U-shaped opening is provided on the docking strip 22. Both the driving wheel 8 and the cooling plate 5 are made of metal materials with good heat conduction properties.

[0032] It should be noted that in the present invention, a conveying channel 11 for conveying refrigerant is provided in the upper plate 1, and a refrigerant chamber 4 communicating with the conveying channel 11 is provided on the upper cover plate 3. As another variation, of course, a conveying channel 11 for conveying refrigerant can also be provided in the upper plate 1, and an external pipeline connecting the refrigerant chamber 4 and the refrigeration tank 2 can be used as the conveying channel 11 instead.

[0033] It should be noted that the present invention can cool the rail through the heat conduction of the driving wheel 8 and the cooling plate 5 from the perspective of facilitating the recovery of refrigerant for recycling. In order to improve the cooling efficiency, in the case of abandoning or reducing the recovery of refrigerant, exhaust holes are provided on the wheel surface of the driving wheel 8 and the cooling plate 5 in this embodiment, and the gaseous refrigerant is sprayed onto the rail through the exhaust holes to achieve efficient cooling. Of course, on the basis of setting the exhaust holes, an outer cover can be provided outside each pair of cooling boxes 6 to cover the cooling boxes 6 and the rail between the two cooling boxes 6, so that the refrigerant can be in contact with the rail for a longer time, and a refrigerant recovery pipeline can also be connected to the outer cover.

[0034] When the present invention is in use, the device is first installed on the rail. Specifically, the device is first installed on two rails. The upper plate 1 arranged equidistant from the rails is placed on the rail, and the upper cover plates 3 arranged at both ends of the upper plate 1 are respectively connected to the two cooling boxes 6 at the bottom. The connection is made through a locking component, so that the driving wheels 8 provided on the cooling boxes 6 are in sliding contact with the "I"-shaped rail to complete the connection;

[0035] When the installation is completed, the impact port 16 provided in the cooling chamber 7 will be docked with the mating port 17 provided in the refrigerant chamber 4 to achieve communication.

[0036] The refrigeration machine 10 is powered by an external power supply. The refrigerant inside the refrigeration machine 10 will be conveyed through an air delivery pipe after being pressurized by an air delivery pump. Under the action of the conveying channel 11 provided on the upper plate 1, the refrigerant will be conveyed into the refrigerant chamber 4. The cooling plate 5 provided at the bottom of the refrigerant chamber 4 will be in direct contact with the refrigerant, enabling the cooling plate 5 to effectively cool the upper surface of the rail, so as to reduce the occurrence of rail buckling or thermal expansion and runway phenomena in the seamless track of high-speed railways;

[0037] The refrigerant will be transmitted downward from the mating port 17 through the impact port 16. Under the action of the inclined impact port 16, the refrigerant will be quickly discharged. The obliquely ejected refrigerant will directly act on the impeller 14 arranged in an arc shape on the driving wheel 8. When the impeller 14 is acted upon by the refrigerant, it will receive an impact force, thereby driving the connected driving wheel 8 to rotate. When multiple driving wheels 8 rotate, the driving wheels 8 will drive the entire device to move on the rail. While the driving wheels 8 are rotating, the refrigerant will use the driving wheels 8 as a medium to fully contact both sides of the rail, thereby effectively cooling both sides of the rail. The driving wheels 8 will drive the device to move. While the device is moving on the rail, mobile cooling of the rail is achieved, thereby effectively improving the cooling efficiency. After heat exchange, the refrigerant will be transported into the reflux chamber 19 in the reflux tank 18 and return to the refrigeration tank through the reflux pipe to achieve circulation.

[0038] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, makes equivalent substitutions or changes, and should be covered by the protection scope of the present invention.

Claims

1. A mobile rail cooling device for high-speed railway seamless lines, including an upper plate (1) arranged at an equal distance from the rail, characterized in that, A refrigeration tank (2) is arranged on the upper plate (1), and upper covers (3) are arranged at both ends of the upper plate (1). A refrigerant cavity (4) is provided in the upper cover (3). The refrigerant output end of the refrigeration tank (2) is connected to the refrigerant cavity (4) via a conveying channel (11). A cooling plate (5) in contact with the rail is provided at the bottom of the refrigerant cavity (4). The upper cover (3) is connected to two cooling boxes (6) arranged opposite to each other via a locking assembly. A cooling cavity (7) is provided in the cooling box (6). The side wall of the cooling cavity (7) facing the rail is provided with a plurality of mounting openings penetrating the side wall. A driving wheel (8) is provided in each mounting opening. A channel for refrigerant to enter the driving wheel (8) from the refrigerant cavity (4) is provided between the upper cover (3) and the cooling box (6), and a reflux channel for receiving the refrigerant discharged after passing through the driving wheel (8) is provided in the cooling box (6). The flow channel is connected to the refrigeration tank (2) through a return pipe (9); an impeller (14) is arranged in the driving wheel (8), a rotating shaft (13) is arranged at the center of the impeller (14), and both ends of the rotating shaft (13) are installed in the top plate and the bottom plate of the cooling box (6); an impact hole (16) arranged obliquely is opened on the inner wall of the cooling chamber (7) above the driving wheel (8), a matching hole (17) matched with the impact hole (16) is opened at the bottom of the refrigerant chamber (4), and a sealing ring is arranged on the contact surface between the cooling box (6) and the upper cover plate (3) around the matching hole (17); a refrigeration assembly is arranged in the refrigeration tank (2), and the refrigeration assembly includes a refrigeration machine (10) connected to an external power supply arranged in the refrigeration tank (2), the refrigeration machine (10) is connected to a gas pipeline for conveying refrigerant through an air pump, and an inner hole is opened in the upper plate (1) as a conveying channel (11).

2. The mobile rail cooling device for high-speed railway seamless lines according to claim 1, characterized in that, The reflux channel comprises a reflux box (18), the reflux box (18) being connected to the refrigeration tank (2) via a reflux pipe (9), a reflux chamber (19) being provided in the reflux box (18) and communicating with the cooling chamber (7); a communication channel connecting the cavity area (12) at the bottom of the driving wheel (8) and the reflux chamber (19) is provided in the bottom plate of the cooling box (6).

3. The mobile rail cooling device for high-speed railway seamless lines according to claim 1, characterized in that, The locking assembly comprises a docking block (20) fixedly connected to two sides of the cooling box (6), the docking block (20) being provided with a U-shaped opening, and a fastening bolt (21) being threadedly connected to the inner wall of the U-shaped opening.

4. A mobile rail cooling device for high-speed railway seamless lines according to claim 3, characterized in that, The side walls of the upper cover plate (3) are connected to a docking strip (22) via a fastening block, and the docking strip (22) is provided with a rectangular fastening opening that matches the U-shaped opening.

5. A mobile rail cooling device for high-speed railway seamless lines according to claim 1, characterized in that, The upper and lower inner walls of the installation opening are both provided with sealing blocks (15) for sealing the upper and lower openings of the driving wheel (8).

6. The mobile rail cooling device for high-speed railway seamless lines according to claim 1, characterized in that, Exhaust holes are provided on the wheel surface of the driving wheel (8) and the cooling plate (5).

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