Overhead line system icing detection device

Abstract

The utility model provides an overhead line system icing detection device, and belongs to the technical field of overhead line system icing detection.The overhead line system icing detection device is used for being installed on a train running on a track and specifically comprises a first conductive contact plate, a second conductive contact plate, a power source and a current collection assembly which are arranged at intervals; the first conductive contact plate is connected with one electrode of the power supply through a wire, and the second conductive contact plate is connected with the other electrode of the power supply through a wire; the current acquisition assembly is used for acquiring current flowing through the first conductive contact plate or the second conductive contact plate, and when the overhead line system is not frozen, the first conductive contact plate and the second conductive contact plate are in contact with the surface of the overhead line system; and when the overhead line system is frozen, the first conductive contact plate and / or the second conductive contact plate are / is in contact with accumulated ice on the surface of the overhead line system. Whether the contact network is iced or not is judged by detecting the current of the conductive contact plate, and the icing of the contact network can be dynamically monitored on the running deicing special train.

Description

Technical Field

[0001] This application relates to the field of catenary icing detection, and in particular to a catenary icing detection device. Background Art

[0002] Rain, snow and freezing weather pose great challenges to the transportation industry. Among them, the track catenary will freeze due to the influence of freezing rain weather. The ice layer reduces the contact performance between the pantograph and the catenary, resulting in power outages, short circuits, arcing and other phenomena, seriously affecting the operation efficiency and safety of railways. In addition, catenary icing also occurs in subways and light rails running on the ground.

[0003] At present, the de-icing of the catenary mainly includes manual de-icing, mechanical de-icing, DC de-icing, UAV de-icing and some other methods. The detection of catenary icing is essential for track de-icing. The existing detection methods along the track are as follows: (1) Manual inspection; this method has low efficiency and poor safety; (2) Icing detection devices along the track, that is, using icing sensors based on different principles: easy to use, but prone to false alarms and missed alarms; (3) UAV inspection: requires manual operation, and freezing rain affects the safety of UAVs; (4) Image processing technology: This method has been vigorously developed in recent years, and there are already many data processing methods for icing detection; however, it is difficult to detect icing at night; moreover, the image processing speed is slow, and dynamic monitoring cannot be achieved on a moving special train. Summary of the Utility Model

[0004] In view of this, this application provides a catenary icing detection device, which solves the problems in the prior art and realizes dynamic monitoring of catenary icing on a moving de-icing special train.

[0005] A catenary icing detection device provided by this application adopts the following technical solutions:

[0006] A catenary icing detection device is used to be installed on a train running on a track. The catenary icing detection device includes a first conductive contact plate, a second conductive contact plate, a power supply and a current acquisition component which are arranged at intervals. The first conductive contact plate and the second conductive contact plate are arranged at intervals along the traveling direction of the train. One of the electrodes of the first conductive contact plate and the power supply is connected by a wire, and the other electrode of the second conductive contact plate and the power supply is connected by a wire;

[0007] Among them, the first conductive contact plate and the second conductive contact plate are used to contact the catenary, and the current acquisition component is used to collect the current flowing through the first conductive contact plate or the second conductive contact plate. When the catenary is not iced, the first conductive contact plate and the second conductive contact plate contact the surface of the catenary; when the catenary is iced, the first conductive contact plate and / or the second conductive contact plate contact the ice accumulated on the surface of the catenary.

[0008] Optionally, the catenary icing detection device further includes a current-limiting resistor, and the current-limiting resistor and the power supply are connected in series between the first conductive contact plate and the second conductive contact plate.

[0009] Optionally, the tops of the first conductive contact plate and the second conductive contact plate are used to contact the catenary, and the first conductive contact plate and the second conductive contact plate are installed on the top of the train through a support frame.

[0010] Optionally, the support frame includes a support rod and a spring. The bottom end of the support rod is fixedly connected to the top of the train. The first conductive contact plate and the second conductive contact plate are installed at the top end of the support rod through insulating parts. One end of the spring is installed on the top of the train, and the other end of the spring is connected to the support rod. The spring provides an upward elastic force for the support rod, so that the first conductive contact plate and the second conductive contact plate have an upward acting force, and the first conductive contact plate and the second conductive contact plate have a pressing force towards the catenary.

[0011] Optionally, the catenary icing detection device includes a pantograph. The pantograph includes a base, a support structure, a pantograph lifting and lowering structure, and a pantograph head. The base is installed on the top of the train. The base, the support structure and the pantograph lifting and lowering structure of the pantograph serve as the support frame, and the pantograph head of the pantograph includes the first conductive contact plate and the second conductive contact plate.

[0012] Optionally, both the first conductive contact plate and the second conductive catenary are carbon sliding plates.

[0013] Optionally, the power supply is a DC power supply.

[0014] Optionally, the current detection component is an ammeter, and the ammeter and the DC power supply are connected in series between the first conductive contact plate and the second conductive contact plate.

[0015] Optionally, the voltage output by the DC power supply is less than or equal to 36V.

[0016] In summary, the present application includes the following beneficial technical effects:

[0017] The catenary icing detection device of the present application determines whether there is icing on the catenary according to whether the first conductive contact plate and the second conductive contact plate are in direct contact with the catenary. It can detect the icing of the catenary in real time as the train travels, can realize dynamic monitoring on the de-icing train during driving, and the collected data is only current, without complex data processing, improving the detection efficiency and reliability. Description of the Drawings

[0018] To more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0019] Figure 1 It is a schematic circuit principle diagram of the detection device for icing on the catenary of the present application;

[0020] Figure 2 It is a schematic circuit principle diagram of the detection device when the catenary of the present application is not iced;

[0021] Figure 3 It is a schematic structural diagram of the first conductive contact plate, the second conductive contact plate and the support rod of the present application.

[0022] Explanation of reference numerals: 1. First conductive contact plate; 2. Second conductive contact plate; 3. Power supply; 4. Ammeter; 5. Current limiting resistor; 6. Support rod; 7. Catenary. Detailed implementation manners

[0023] The following will describe the embodiments of the present application in detail with reference to the drawings.

[0024] The following illustrates the implementation manners of the present application through specific examples. Those skilled in the art can easily understand other advantages and effects of the present application from the content disclosed in this specification. Obviously, the described embodiments are only some embodiments of the present application, rather than all embodiments. The present application can also be implemented or applied through other different specific implementation manners. Various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of the present application. It should be noted that, without conflict, the following embodiments and the features in the embodiments can be combined with each other. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present application without creative efforts belong to the scope of protection of the present application.

[0025] Note that the following describes various aspects of embodiments within the scope of the appended claims. It should be apparent that the aspects described herein can be embodied in a wide variety of forms, and any specific structure and / or function described herein is illustrative only. Based on this application, those skilled in the art should understand that one aspect described herein can be implemented independently of any other aspect, and two or more of these aspects can be combined in various ways. For example, any number of aspects described herein can be used to implement a device and / or practice a method. Additionally, this device can be implemented and this method can be practiced using other structures and / or functionality in addition to one or more of the aspects described herein.

[0026] It should also be noted that the diagrams provided in the following embodiments only illustrate the basic concept of this application schematically. Only the components related to this application are shown in the diagrams, rather than being drawn according to the number, shape, and size of the components in actual implementation. The type, quantity, and proportion of each component in actual implementation can be arbitrarily changed, and the layout type of its components may also be more complex.

[0027] In addition, in the following description, specific details are provided to facilitate a thorough understanding of the examples. However, those skilled in the art will understand that the aspects described can be practiced without these specific details.

[0028] An embodiment of this application provides a catenary icing detection device.

[0029] As Figure 1 and Figure 2 shown, a catenary icing detection device is for installation on a train running on a track. The catenary icing detection device includes a first conductive contact plate 1, a second conductive contact plate 2, a power supply 3, and a current acquisition component that are spaced apart. The first conductive contact plate 1 and the second conductive contact plate 2 are spaced apart along the train traveling direction. One of the electrodes of the first conductive contact plate 1 and the power supply 3 is connected by a wire, and the other electrode of the second conductive contact plate 2 and the power supply 3 is connected by a wire.

[0030] Among them, the first conductive contact plate 1 and the second conductive contact plate 2 are used to contact the catenary 7. The current acquisition component is used to acquire the current flowing through the first conductive contact plate 1 or the second conductive contact plate 2. When the catenary 7 is not frozen, the first conductive contact plate 1 and the second conductive contact plate 2 contact the surface of the catenary 7. The first conductive contact plate 1, the second conductive contact plate 2, the catenary 7, the power supply 3 and the wire form a first circuit. At this time, the current in the first circuit is relatively large, and the current acquisition component acquires a relatively large current value of the first current of the first conductive contact plate 1 and the second conductive contact plate 2. When the catenary 7 is frozen, the first conductive contact plate 1 and / or the second conductive contact plate 2 contact the ice accumulated on the surface of the catenary 7. The second circuit formed by the first conductive contact plate 1, the second conductive contact plate 2, the ice accumulation, the catenary 7, the power supply 3 and the wire has a very small current in the second circuit because the resistance of the ice accumulation is very large, almost approaching zero. At this time, the current acquisition component acquires a very small current value of the second current of the first conductive contact plate 1 and the second conductive contact plate 2, which is smaller than the first current. Therefore, it is possible to judge whether the catenary 7 is frozen according to the magnitude of the current value acquired by the current acquisition component. By setting an appropriate threshold, when the current acquired by the current acquisition component is less than the threshold, it indicates that the catenary is frozen.

[0031] The catenary icing detection device of the present application judges whether there is icing on the catenary 7 according to whether the first conductive contact plate 1 and the second conductive contact plate 2 are in direct contact with the catenary 7. It can perform real-time icing detection on the catenary 7 as the train travels, can realize dynamic monitoring on a moving de-icing train, and the collected data is only current, without complex data processing, improving the detection efficiency and reliability.

[0032] The catenary icing detection device further includes a current-limiting resistor 5, and the current-limiting resistor 5 and the power supply 3 are connected in series between the first conductive contact plate 1 and the second conductive contact plate 2. The function of the protection resistor is to prevent the current in the first circuit from being too large and play a role in protecting the circuit.

[0033] The tops of the first conductive contact plate 1 and the second conductive contact plate 2 are used to contact the catenary 7. The first conductive contact plate 1 and the second conductive contact plate 2 are installed on the top of the train through a support frame.

[0034] For the support frame, in one embodiment, the support frame includes a support rod 6 and a spring. The bottom end of the support rod 6 is fixedly connected to the top of the train. The first conductive contact plate 1 and the second conductive contact plate 2 are mounted on the top end of the support rod 6 through insulating members. One end of the spring is mounted on the top of the train, and the other end of the spring is connected to the support rod 6. The spring provides an upward elastic force for the support rod 6, so that the first conductive contact plate 1 and the second conductive contact plate 2 have an upward acting force, and the first conductive contact plate 1 and the second conductive contact plate 2 have a pressing force towards the catenary 7, ensuring that when the catenary 7 is not frozen, the first conductive contact plate 1 and the second conductive contact plate 2 can stably contact the catenary 7, improving the reliability of detection.

[0035] For the support frame, in another embodiment, the catenary icing detection device includes a pantograph. The pantograph includes a base, a support structure, a pantograph raising and lowering structure, and a pantograph head. The base is mounted on the top of the train, the support structure is mounted on the base, and the pantograph raising and lowering structure is used to drive the pantograph head to rise and fall. The base, the support structure, and the pantograph raising and lowering structure of the pantograph serve as the support frame, and the pantograph head of the pantograph includes the first conductive contact plate 1 and the second conductive contact plate 2. The first conductive contact plate 1, the second conductive contact plate 2, and the support frame adopt the structure of the pantograph, enabling the first conductive contact plate 1 and the second conductive contact plate 2 to have the function of lifting and lowering while also enabling the first conductive contact plate 1 and the second conductive contact plate 2 to stably contact the catenary when the catenary 7 is not frozen. Generally, the sliding plate on the pantograph head is connected to the power supply circuit of the train power system. In the embodiment of the present application, the first conductive contact plate 1 and the second conductive contact plate 2 are connected in series with the power supply 3 and the current limiting resistor 5 and are not connected to the power supply circuit of the train power system.

[0036] Both the first conductive contact plate 1 and the second conductive catenary 7 are carbon sliding plates.

[0037] The power supply 3 is a DC power supply. Among them, the DC power supply is a low-voltage DC power supply, and the output voltage is less than or equal to 36V. In other embodiments, the power supply 3 can also be a single-phase AC power supply 3.

[0038] The current detection component is an ammeter 4, and the ammeter 4 and the DC power supply are connected in series between the first conductive contact plate 1 and the second conductive contact plate 2.

[0039] As described above, only the specific embodiments of the present application are provided, but the protection scope of the present application is not limited thereto. Any changes or substitutions that can be easily thought of by those skilled in the art within the technical scope disclosed in the present application should be covered by the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. An OCS icing detection device, characterized in that, For installation on a train running on a track, the catenary icing detection device includes a first conductive contact plate (1), a second conductive contact plate (2), a power supply (3) and a current acquisition component which are arranged at intervals. The first conductive contact plate (1) and the second conductive contact plate (2) are arranged at intervals along the train running direction. One electrode of the first conductive contact plate (1) and the power supply (3) is connected by a wire, and the other electrode of the second conductive contact plate (2) and the power supply (3) is connected by a wire; Wherein, the first conductive contact plate (1) and the second conductive contact plate (2) are used to contact the catenary (7), and the current acquisition component is used to acquire the current flowing through the first conductive contact plate (1) or the second conductive contact plate (2). When the catenary (7) is not iced, the first conductive contact plate (1) and the second conductive contact plate (2) contact the surface of the catenary (7); when the catenary (7) is iced, the first conductive contact plate (1) and / or the second conductive contact plate (2) contact the ice accumulated on the surface of the catenary (7).

2. The catenary icing detection device according to claim 1, characterized in that, The catenary icing detection device further includes a current limiting resistor (5), and the current limiting resistor (5) and the power supply (3) are connected in series between the first conductive contact plate (1) and the second conductive contact plate (2).

3. The catenary icing detection device according to claim 1, wherein The tops of the first conductive contact plate (1) and the second conductive contact plate (2) are used to contact the catenary (7), and the first conductive contact plate (1) and the second conductive contact plate (2) are installed on the top of the train through a support frame.

4. The catenary icing detection device according to claim 3, wherein The support frame includes a support rod (6) and a spring. The bottom end of the support rod (6) is fixedly connected to the top of the train. The first conductive contact plate (1) and the second conductive contact plate (2) are installed at the top end of the support rod (6) through insulating parts. One end of the spring is installed on the top of the train, and the other end of the spring is connected to the support rod (6). The spring provides an upward elastic force for the support rod (6) so that the first conductive contact plate (1) and the second conductive contact plate (2) have an upward acting force, and the first conductive contact plate (1) and the second conductive contact plate (2) have a pressing force towards the catenary (7).

5. The catenary icing detection device according to claim 3, characterized in that, The catenary icing detection device includes a pantograph. The pantograph includes a base, a support structure, a pantograph raising and lowering structure and a pantograph head. The base is installed on the top of the train. The base, the support structure and the pantograph raising and lowering structure of the pantograph serve as the support frame, and the pantograph head of the pantograph includes the first conductive contact plate (1) and the second conductive contact plate (2).

6. The catenary icing detection device according to claim 1, characterized in that Both the first conductive contact plate (1) and the second conductive catenary (7) are carbon sliding plates.

7. The catenary icing detection device according to any one of claims 1-6, characterized in that, The power supply (3) is a DC power supply.

8. The catenary icing detection device according to claim 7, characterized in that The current acquisition component is an ammeter (4), and the ammeter (4) and the DC power supply are connected in series between the first conductive contact plate (1) and the second conductive contact plate (2).

9. The catenary icing detection device according to claim 7, characterized in that, The voltage output by the DC power supply is less than or equal to 36V.

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