De-icing device for electrified railway tunnels

Abstract

The application discloses a kind of deicing equipment for electrified railway tunnel, it is related to electrified railway tunnel auxiliary equipment technical field.The deicing equipment includes arc baffle and heating assembly, arc baffle is used to be installed in the tunnel top of electrified railway tunnel at intervals, and arc baffle is adapted to tunnel top, arc baffle is insulating structure, the top surface of arc baffle is equipped with collection groove, the bottom surface of collection groove is arc surface, collection groove is used to collect and guide the seepage of tunnel top, heating assembly is arranged at the side wall of collection groove in the circumferential direction of arc baffle, in the case where deicing equipment is in first state, heating assembly stops working, the seepage in collection groove can freeze, and ice column is formed on heating assembly;In the case where deicing equipment is in second state, heating assembly heats and melts the root of ice column on heating assembly.This application can solve the problem of low deicing efficiency and large cost of current deicing equipment.

Description

Technical Field

[0001] This application belongs to the technical field of auxiliary equipment for electrified railway tunnels, and specifically relates to a de-icing device for electrified railway tunnels. Background Technology

[0002] In cold regions, icicles on the ceilings of old electrified railway tunnels pose a significant threat to train safety. Due to water seepage from the tunnel ceiling, icicles easily form under low temperatures. If not cleared promptly, these icicles can discharge onto the overhead contact line or pantograph, potentially burning through the contact line or catenary cables, leading to railway accidents and severely impacting the normal operation of trains.

[0003] Existing methods for de-icing the roof of electrified railway tunnels mainly include manual de-icing, mechanical de-icing, and warm air de-icing. Manual de-icing requires at least 4 to 6 people to work together, and tunnels with severe icing may need to be inspected and de-iced every 6 hours, resulting in low de-icing efficiency and high personal safety risks. Mechanical de-icing is costly and carries high safety risks. Warm air de-icing mainly involves installing electric heating fans in the tunnel and then sending warm air through ducts to the seepage points on the tunnel roof. This continuous operation prevents ice from forming at the seepage points, but this method is not only inefficient but also requires the purchase of various equipment, resulting in high costs. Summary of the Invention

[0004] The purpose of this application is to provide a de-icing device for electrified railway tunnels, which can solve the problems of low de-icing efficiency and high cost of current de-icing devices.

[0005] To solve the above-mentioned technical problems, this application is implemented as follows: This application provides a de-icing device for electrified railway tunnels, including arc-shaped baffles and a heating assembly. The arc-shaped baffles are spaced apart and adapted to the tunnel roof. The arc-shaped baffles are insulated, and their top surface has a flow-collecting groove with an arc-shaped bottom surface. The flow-collecting groove collects and guides seepage water from the tunnel roof. The heating assembly is located on the circumferential sidewall of the flow-collecting groove of the arc-shaped baffle. When the de-icing device is in the first state, the heating component stops working, the seepage water in the collection tank can freeze, and ice columns form on the heating component; when the de-icing device is in the second state, the heating component heats and melts the base of the ice columns on the heating component.

[0006] In this embodiment, an arc-shaped baffle is installed at the top of the electrified railway tunnel, and a collection trough for collecting and diverting seepage water from the tunnel top is opened on the top surface of the arc-shaped baffle. At the same time, a heating component is installed on the circumferential sidewall of the collection trough of the arc-shaped baffle. When the de-icing equipment is in the first state, the heating component stops working. At this time, the seepage water from the tunnel top drips into the collection trough. Because the ambient temperature is low, the seepage water in the collection trough can freeze. And because the heating component is installed on the circumferential sidewall of the collection trough of the arc-shaped baffle, icicles form on the heating component after a long time. When the de-icing equipment is in the second state, that is, when the icicles reach a certain height, the heating component heats and melts the base of the icicles attached to the heating component. At this time, the icicles fall off the heating component, thereby achieving the purpose of de-icing.

[0007] Compared to existing technologies that continuously supply warm air to the tunnel ceiling, the de-icing device in this application only heats and de-ices the ice column once it reaches a certain height. This means the heating component does not need to operate continuously, resulting in higher de-icing efficiency. Furthermore, the intermittent operation of the heating component significantly reduces energy consumption for de-icing. Additionally, the device has a simple structure and lower equipment cost. Therefore, the embodiments of this application can solve the problems of low de-icing efficiency and high cost of current de-icing devices. Attached Figure Description Figure 1 This is a schematic diagram of the de-icing equipment and the tunnel roof disclosed in the embodiments of this application; Figure 2 This is a schematic diagram of the de-icing device disclosed in the embodiments of this application; Figure 3 This is a schematic diagram of the heating assembly disclosed in an embodiment of this application.

[0008] Explanation of reference numerals in the attached figures: 100 - Arc-shaped baffle, 110 - Flow collection groove, 111 - Bottom surface, 113 - First side surface, 115 - Third side surface, 116 - Fourth side surface, 117 - Arc-shaped side surface, 120 - Receiving groove; 200 - Heating assembly, 210 - Heating element, 220 - Annular mounting bracket; 300 - Tunnel top. Detailed Implementation

[0009] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0010] The terms "first," "second," etc., used in the specification and claims of this application are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such use of data can be interchanged where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first," "second," etc., are generally of the same class and the number of objects is not limited; for example, a first object can be one or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0011] The de-icing equipment for electrified railway tunnels provided in this application will be described in detail below with reference to the accompanying drawings, through specific embodiments and application scenarios.

[0012] like Figures 1 to 3 As shown, this application embodiment provides a de-icing device for electrified railway tunnels. Of course, the de-icing device can also be used for other types of tunnels, and this application embodiment does not impose specific limitations on this.

[0013] The de-icing device includes an arc-shaped baffle 100 and a heating component 200. The arc-shaped baffle 100 is installed intermittently on the tunnel top 300 of an electrified railway tunnel, meaning there is a certain distance between the top surface of the arc-shaped baffle 100 and the tunnel top 300. Optionally, the arc-shaped baffle 100 can be fixed to the tunnel top 300 using fasteners such as screws. The connection method between the arc-shaped baffle 100 and the tunnel top 300 is not specifically limited. Furthermore, the arc-shaped baffle 100 is adapted to the tunnel top 300, which is typically an arc-shaped structure. Therefore, the structure of the arc-shaped baffle 100 in this application is adapted to the tunnel top 300, facilitating its installation. The arc-shaped baffle 100 is an insulated structure to prevent short circuits caused by electrical conduction with the contact network of the tunnel top 300, thereby improving train operation safety. The top surface of the arc-shaped baffle 100 is provided with a collection groove 110, which can specifically be the outer circumferential surface of the arc-shaped baffle 100. The bottom surface 111 of the collection groove 110 is an arc-shaped surface. The collection groove 110 is used to collect and guide the seepage water from the top 300 of the tunnel. The heating component 200 is disposed on the circumferential side wall of the collection groove 110 on the arc-shaped baffle 100. When the de-icing device is in the first state, the heating component 200 stops working, the seepage water in the collection groove 110 can freeze, and an ice column is formed on the heating component 200. This ice column can extend downward from the edge of the arc-shaped baffle 100 along the direction of gravity. When the de-icing device is in the second state, the heating component 200 heats and melts the base of the ice column on the heating component 200. That is to say, the above-mentioned de-icing device switches between the first state and the second state.

[0014] In this embodiment, an arc-shaped baffle 100 is installed at the top 300 of the electrified railway tunnel, and a collection trough 110 is opened on the top surface of the arc-shaped baffle 100 to collect and guide the seepage water from the top 300 of the tunnel. At the same time, a heating component 200 is installed on the circumferential sidewall of the collection trough 110 of the arc-shaped baffle 100. When the de-icing equipment is in the first state, the heating component 200 stops working. At this time, the seepage water from the top 300 of the tunnel drips into the collection trough 110. Because the ambient temperature is low, the seepage water in the collection trough 110 can freeze. And because the heating component 200 is installed on the circumferential sidewall of the arc-shaped baffle 100 of the collection trough, ice columns form on the heating component 200 after a long time. When the de-icing equipment is in the second state, that is, when the ice column reaches a certain height, the heating component 200 heats and melts the base of the ice column attached to the heating component 200. At this time, the ice column falls off the heating component 200, thereby achieving the purpose of de-icing.

[0015] Compared to existing technologies that continuously supply warm air to the tunnel ceiling 300, the de-icing device in this application only heats and de-ices the ice column after it reaches a certain height. This means the heating component 200 does not need to operate continuously, resulting in higher de-icing efficiency. Furthermore, the intermittent operation of the heating component 200 significantly reduces energy consumption for de-icing. Additionally, the device has a simple structure and lower cost. Therefore, the embodiments of this application can solve the problems of low de-icing efficiency and high cost of current de-icing devices.

[0016] It should be noted that the dimensions of the aforementioned arc-shaped baffle 100 (i.e., the length of the arc-shaped baffle 100 in the direction of its extension along its central axis and the arc length in its circumferential direction) can be selected according to the actual leakage area of ​​the tunnel top 300, and this application embodiment does not impose specific limitations on this; in addition, in the above embodiment, when there is a lot of ice in the collection channel 110, the ice can seal the seepage point of the tunnel top 300, thereby preventing water from seeping from the seepage point.

[0017] Furthermore, in the above embodiments, compared with manual de-icing, using the above-mentioned de-icing equipment can save manpower, has higher de-icing efficiency, and is also safer.

[0018] Optionally, the heating component 200 can be directly disposed on the side wall of the collecting groove 110 in the circumferential direction of the arc-shaped baffle 100; or, in other optional embodiments, the arc-shaped baffle 100 is further provided with a receiving groove 120 communicating with the collecting groove 110, the receiving groove 120 being located on the side wall of the collecting groove 110 in the circumferential direction of the arc-shaped baffle 100, and the heating component 200 being disposed in the receiving groove 120, which can avoid the heating component 200 occupying the space in the collecting groove 110.

[0019] In a further optional embodiment, the heating assembly 200 includes a heating element 210 disposed within the receiving groove 120. The heating element 210 has a plate-like structure. When the de-icing device is in a first state, the heating element 210 stops working, and an icicle forms on the heating element 210. When the de-icing device is in a second state, the heating element 210 heats and melts the base of the icicle. By disposing of the heating element 210 within the receiving groove 120 of the arc-shaped baffle 100, the seepage water collected in the collecting groove 110 flows into the receiving groove 120 and freezes there, forming an icicle over a long period. When the icicle reaches a certain size, the heating element 210 heats it to melt the base, and then the icicle falls off the heating element 210. The heating component 200 in this design has a simple structure and few parts, making it easy to install. Furthermore, designing the heating element 210 as a plate structure provides a large surface area, which facilitates the formation of multiple icicles on the heating element 210, thereby extending the time the heating element 210 is not in operation and further reducing energy consumption. Of course, the heating element 210 can also be designed as a block structure. In one optional embodiment, the heating element 210 is a heating mesh, in which case the icicles will wrap around the heating mesh. Around the circumference of the arc-shaped baffle 100, the receiving groove 120 extends to the end face of the arc-shaped baffle 100. The heating element 210 is located at the bottom or middle of the receiving groove 120, where the bottom is the end of the receiving groove 120 closest to the end face of the arc-shaped baffle 100. Water seeping into the receiving groove 120 can form icicles on the side of the heating element 210 facing the ground (i.e., the side facing away from the tunnel roof). The portion of the icicle within the receiving groove 120 is relatively small. When the heating element 210 heats the icicle, only a small amount of heat is needed to melt the base of the icicle, which then falls off under its own weight. This further reduces the energy consumption of the heating element 210. Additionally, the heating mesh has a large heating area, which further improves the heating efficiency of the heating element 210. Of course, the heating element 210 can also be located at the top of the receiving groove 120.

[0020] In another optional embodiment, the heating element 210 is a heating plate. The heating plate has a large structural strength. When the seepage water freezes in the receiving tank 120, the heating plate has good stability and is not easily deformed by the freezing pressure. This helps to extend the service life of the heating element 210.

[0021] Optionally, the side wall of the receiving tank 120 is provided with a drain outlet, which is located higher than the position of the heating element 210. The de-icing equipment also includes a drain pipe, one end of which is connected to the drain outlet. A drain valve is provided in the drain outlet. When the de-icing equipment is in the third state, that is, when the ambient temperature is high, once there is a lot of water in the receiving tank 120, the drain valve is opened, and the water in the receiving tank 120 is discharged through the drain pipe. Furthermore, when the de-icing equipment is in the second state, after the heating element 210 heats the base of the ice column, there is a certain amount of water in the receiving tank 120. The drain valve is opened, and the water in the receiving tank 120 is discharged through the drain pipe. This can extend the closing time of the heating element 210.

[0022] In another optional embodiment, the receiving groove 120 extends to the top surface of the arc-shaped baffle 100, and in the circumferential direction of the arc-shaped baffle 100, the receiving groove 120 extends to the end face of the arc-shaped baffle 100. The heating assembly 200 also includes an annular mounting bracket 220, which is disposed in the receiving groove 120 and connected to the side wall of the receiving groove 120. The heating element 210 is disposed in the receiving cavity of the annular mounting bracket 220 and is connected to the arc-shaped baffle 100 through the annular mounting bracket 220. During the installation of the de-icing equipment, the heating element 210 can be installed into the arc-shaped baffle 100 to form an installation module. Then, the heating component 200 can be installed into the receiving groove 120 of the arc-shaped baffle 100. The receiving groove 120 extends to the top surface of the arc-shaped baffle 100, and in the circumferential direction of the arc-shaped baffle 100, the receiving groove 120 extends to the end face of the arc-shaped baffle 100. This facilitates the installation and removal of the heating component 200.

[0023] Optionally, the annular mounting bracket 220 can be a metal structure with good thermal conductivity, which can improve the de-icing efficiency of the heating element 210.

[0024] In a further optional embodiment, the collecting trough 110 has a first sidewall and a second sidewall arranged opposite to each other in the circumferential direction of the arc-shaped baffle 100. Both the first sidewall and the second sidewall are provided with receiving grooves 120. The number of heating components 200 is at least two, including a first heating component and a second heating component. The first heating component is disposed in the receiving groove 120 of the first sidewall, and the second heating component is disposed in the receiving groove 120 of the second sidewall. When seepage water from the tunnel top 300 drips into the collection channel 110 of the arc-shaped baffle 100, the seepage water at the highest point of the bottom surface 111 of the collection channel 110 can flow along the arc surfaces on both sides to the first side wall and the second side wall, respectively. In the circumferential direction of the arc-shaped baffle 100, the seepage water on both sides of the first vertical plane (the central axis of the circumference of the arc-shaped baffle 100 lies within the first vertical plane) flows along the arc surfaces on both sides of the bottom surface 111 to the first side wall and the second side wall, respectively. The first heating component is used to heat the base of the icicles on the first side wall and cause them to fall off, and the second heating component is used to heat the base of the icicles on the second side wall and cause them to fall off, thereby further improving the de-icing efficiency of the de-icing equipment. Alternatively, the heating component 200 can be installed only on the first or second side wall.

[0025] In one optional embodiment, the collection trough 110 is symmetrically arranged about a first vertical plane. The central axis of the circumference of the bottom surface 111 of the collection trough 110, the central axis of the circumference of the arc-shaped baffle 100, and the central axis of the circumference of the tunnel top 300 are all located in the first vertical plane. The arc-shaped baffle 100 disclosed in this solution has a symmetrical structure and is symmetrically arranged about the central axis of the circumference of the tunnel top 300. At this time, the arc-shaped baffle 100 is subjected to relatively uniform force at both ends in its circumferential direction, which is beneficial to improving the stability of the arc-shaped baffle 100. Furthermore, since the collection trough 110 is symmetrically arranged about the first vertical plane, when the seepage water in the collection trough 110 freezes, the arc-shaped baffle 100 is subjected to relatively uniform force at both ends in its circumferential direction, which is beneficial to further improving the stability of the arc-shaped baffle 100 and preventing the arc-shaped baffle 100 from tilting due to uneven force.

[0026] Of course, the central axis of the circumference of the aforementioned arc-shaped baffle 100 can also be offset from the central axis of the circumference of the tunnel top 300 in the width direction of the tunnel, or the central axis of the circumference of the collection channel 110 can also be offset from the central axis of the circumference of the tunnel top 300 in the width direction of the tunnel. Optionally, the central axis of the circumference of the bottom surface 111 of the collecting trough 110 is located in the plane of the supporting surface of the heating component 200, that is, the supporting surface of the heating component 200 is perpendicular to the bottom surface 111 of the collecting trough 110. This allows the seepage water guided by the bottom surface 111 of the collecting trough 110 to fully contact the heating component 200 and form ice columns on the heating component 200.

[0027] In one optional embodiment, the inner surface of the collecting trough 110 includes a first side surface 113, a second side surface, a third side surface 115, and a fourth side surface 116. All four sides are planar structures. The first side surface 113 and the second side surface are arranged opposite each other in the circumferential direction of the arc-shaped baffle 100, and the third side surface 115 and the fourth side surface 116 are arranged opposite each other in the axial direction of the arc-shaped baffle 100. Optionally, the first side surface 113, the third side surface 115, the second side surface 116, and the fourth side surface 116 are arranged opposite each other in the axial direction of the arc-shaped baffle 100. The fourth side 116 can be connected end to end in sequence; or, any two adjacent sides among the first side 113, the third side 115, the second side, and the fourth side 116 can be connected by an arc-shaped side 117, thereby reducing the rate of curvature change at the connection between any two adjacent sides among the first side 113, the third side 115, the second side, and the fourth side 116. This facilitates the full flow of seepage water collected in the collection tank 110 to the heating component 200, thereby improving the water collection and flow guiding efficiency of the collection tank 110.

[0028] In another optional embodiment, the de-icing device further includes a monitoring component and a control component. Both the monitoring component and the heating assembly 200 are electrically connected to the control component. The monitoring component monitors the icicles on the heating assembly 200. Optionally, the monitoring component can be an image sensor, such as a camera; this embodiment does not impose specific limitations on this. The control component controls the operating state of the heating assembly 200 based on the icicle information detected by the monitoring component. Specifically, when the icicle information detected by the monitoring component indicates that de-icing is needed, this can be determined based on the size of the icicle (e.g., its length). The control component then controls the heating assembly 200 to heat the icicles to melt the base, thereby removing them. Additionally, workers can determine the mud content in the icicles based on the information. If the mud content is high, workers need to pay attention to whether there is a potential for tunnel roof cavities in the tunnel ceiling 300 to ensure tunnel safety. Of course, the heating assembly 200 can also operate at intervals to remove the icicles.

[0029] Optionally, the de-icing equipment also includes an alarm, which is electrically connected to the control unit. When the heating component 200 malfunctions, the control unit can activate the alarm to alert staff to conduct a timely inspection.

[0030] The embodiments of this application have been described above with reference to the accompanying drawings. However, this application is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of this application without departing from the spirit and scope of the claims, and all of these forms are within the protection scope of this application.

Claims

1. A de-icing device for electrified railway tunnels, characterized in that, The system includes an arc-shaped baffle (100) and a heating assembly (200). The arc-shaped baffle (100) is installed at intervals on the tunnel top (300) of the electrified railway tunnel, and the arc-shaped baffle (100) is adapted to the tunnel top (300). The arc-shaped baffle (100) is an insulating structure. The top surface of the arc-shaped baffle (100) is provided with a flow collection groove (110), and the bottom surface (111) of the flow collection groove (110) is an arc-shaped surface. The flow collection groove (110) is used to collect and guide seepage water from the tunnel top (300). The heating assembly (200) is disposed on the side wall of the flow collection groove (110) in the circumferential direction of the arc-shaped baffle (100). When the de-icing device is in the first state, the heating component (200) stops working, the seepage water in the collection tank (110) can freeze, and ice columns are formed on the heating component (200); when the de-icing device is in the second state, the heating component (200) heats and melts the base of the ice columns on the heating component (200).

2. The de-icing device according to claim 1, characterized in that, The arc-shaped baffle (100) is also provided with a receiving groove (120) connected to the collecting groove (110). The receiving groove (120) is located on the side wall of the collecting groove (110) in the circumferential direction of the arc-shaped baffle (100), and the heating component (200) is disposed in the receiving groove (120).

3. The de-icing device according to claim 2, characterized in that, The heating assembly (200) includes a heating element (210), which is disposed within the receiving groove (120). The heating element (210) has a plate-like structure. When the de-icing device is in the first state, the heating element (210) stops working, and the ice column forms on the heating element (210); When the de-icing device is in the second state, the heating element (210) heats and melts the base of the ice column.

4. The de-icing device according to claim 3, characterized in that, The heating element (210) is a heating mesh. In the circumferential direction of the arc-shaped baffle (100), the receiving groove (120) extends to the end face of the arc-shaped baffle (100), and the heating element (210) is located at the bottom or middle of the receiving groove (120).

5. The de-icing device according to claim 3, characterized in that, The heating element (210) is a heating plate.

6. The de-icing device according to claim 3, characterized in that, The receiving groove (120) extends to the top surface of the arc-shaped baffle (100). In the circumferential direction of the arc-shaped baffle (100), the receiving groove (120) extends to the end face of the arc-shaped baffle (100). The heating assembly (200) also includes an annular mounting bracket (220). The annular mounting bracket (220) is disposed in the receiving groove (120). The annular mounting bracket (220) is connected to the side wall of the receiving groove (120). The heating element (210) is disposed in the receiving cavity of the annular mounting bracket (220). The heating element (210) is connected to the arc-shaped baffle (100) through the annular mounting bracket (220).

7. The de-icing device according to claim 2, characterized in that, The collecting trough (110) has a first sidewall and a second sidewall arranged opposite to each other in the circumferential direction of the arc-shaped baffle (100), and both the first sidewall and the second sidewall are provided with the receiving groove (120). The number of heating components (200) is at least two, including a first heating component and a second heating component. The first heating component is disposed in the receiving groove (120) of the first sidewall, and the second heating component is disposed in the receiving groove (120) of the second sidewall.

8. The de-icing device according to claim 1, characterized in that, The flow collection channel (110) is symmetrically arranged about the first vertical plane. The central axis of the circumference of the bottom surface (111), the central axis of the circumference of the arc-shaped baffle (100) and the central axis of the circumference of the tunnel top (300) are all located in the first vertical plane.

9. The de-icing device according to claim 1, characterized in that, The side of the collection channel (110) includes a first side (113), a second side, a third side (115), and a fourth side (116). The first side (113), the second side, the third side (115), and the fourth side (116) are all planar structures. The first side (113) and the second side are arranged opposite to each other in the circumferential direction of the arc-shaped baffle (100). The third side (115) and the fourth side (116) are arranged opposite to each other in the axial direction of the arc-shaped baffle (100). Any two adjacent sides of the first side (113), the third side (115), the second side, and the fourth side (116) are connected by an arc-shaped side (117).

10. The de-icing device according to claim 1, characterized in that, The de-icing device also includes a monitoring component and a control component. The monitoring component and the heating component (200) are both electrically connected to the control component. The monitoring component is used to monitor the ice column on the heating component (200), and the control component is used to control the working state of the heating component (200) according to the ice column information monitored by the monitoring component.

Images