Sealed anti-interference roof high-voltage sensor

Abstract

The utility model provides a sealed anti-interference roof high-voltage sensor which comprises a base which is located on the lower side of a contact net and a height limiting line and fixed to the top of a locomotive, a push plate is installed on the base, an installation plate is installed on the push plate, a high-voltage sensor body is fixed to the installation plate, and a damping structure is installed between the push plate and the installation plate. A heat dissipation structure is arranged in the base, an air blowing head is arranged on the base in a running fit mode, the air blowing head corresponds to the push plate, and the heat dissipation structure corresponds to the air blowing head. According to the utility model, the push plate is mounted on the base, the electric cylinder is mounted in the base, the damping structure is mounted between the push plate and the mounting plate, the height of the high-voltage sensor body can be adjusted according to the heights of a height limiting line and a contact network, so that the accuracy is ensured, and the heat dissipation structure is mounted in the base, so that the heat dissipation of the high-voltage sensor body can be realized. The service life of the high-voltage sensor body is prolonged, non-contact voltage measurement can be carried out through the high-voltage sensor body, and safety is guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of high-voltage sensor technology, specifically a sealed anti-interference roof high-voltage sensor. Background Technology

[0002] The overhead contact line maintenance vehicle is a crucial piece of equipment in electrified railway transportation, carrying and assisting maintenance personnel in inspecting, testing, repairing, and troubleshooting the overhead contact line. Before operation, the voltage of the power supply lines to the overhead contact line in the work area must be checked to ensure the work area is de-energized before the vehicle can proceed. Currently, detecting whether the overhead contact line is energized mainly involves installing a voltage detector on an insulating rod. For example, patent CN206132844U discloses an overhead contact line voltage measuring device, which includes an insulating shell with a capacitor mounted on top. The capacitor has a clip on top and is connected to a signal processing circuit. The capacitor includes an epoxy fiberglass board with copper foil sheets on its upper and lower surfaces. The device is manually held against the overhead contact line by holding the voltage detector rod to check for energization. However, the normal voltage of the overhead contact line is around 27.5KV, thus requiring high insulation performance from the insulating rod. Frequent maintenance of the insulating rod is necessary to maintain its insulation performance, posing a significant safety hazard.

[0003] Therefore, this utility model provides a sealed, anti-interference roof-mounted high-voltage sensor. Utility Model Content

[0004] To address the shortcomings of existing technologies, the purpose of this invention is to provide a sealed, anti-interference roof-mounted high-voltage sensor to solve the problems mentioned in the background section. This invention allows for adjustment of the high-voltage sensor body's height based on the height of the height limit line and the overhead contact line, thereby ensuring accuracy. It also provides heat dissipation for the high-voltage sensor body, extending its service life, and enables non-contact voltage measurement through the sensor body, ensuring safety.

[0005] To achieve the above objectives, this utility model is implemented through the following technical solution: a sealed anti-interference roof-mounted high-voltage sensor, comprising a base located below the contact wire and height limit line and fixed to the top of the locomotive, a push plate mounted on the base, an mounting plate mounted on the push plate, a high-voltage sensor body fixed on the mounting plate, a shock-absorbing structure between the push plate and the mounting plate, a heat dissipation structure inside the base, and an air blowing head rotatably mounted on the base, the air blowing head corresponding to the push plate, and the heat dissipation structure corresponding to the air blowing head.

[0006] Furthermore, an electric cylinder is fixed inside the base, and the output end of the electric cylinder is fixedly connected to the push plate.

[0007] Furthermore, the damping structure includes a damper, which is fixedly connected to the push plate and the mounting plate.

[0008] Furthermore, the heat dissipation structure includes an exhaust fan, which is fixed on both sides of the base, and the exhaust end of the exhaust fan is connected to the air blowing head.

[0009] Furthermore, an infrared rangefinder is fixed on the base.

[0010] Furthermore, a rotating frame is fixed on the base, and a rotating shaft is rotatably fitted inside the rotating frame. The rotating shaft is fixedly connected to the air blowing head.

[0011] Furthermore, a push plate is fixed to the side of the push plate, and the push plate is in contact with the air blowing head.

[0012] Furthermore, a controller is fixed inside the base, and the controller is electrically connected to the high-voltage sensor body.

[0013] The beneficial effects of this utility model are as follows: This utility model is a sealed anti-interference roof high-voltage sensor, which includes a base; a push plate; an electric cylinder; a mounting plate; a shock-absorbing structure; a height limit line; a contact wire; a high-voltage sensor body; and a heat dissipation structure.

[0014] A push plate is installed on the base, an electric cylinder is installed inside the base, and a shock-absorbing structure is installed between the push plate and the mounting plate. The height of the high-voltage sensor body can be adjusted according to the height of the height limit line and the contact wire, thereby ensuring accuracy. A heat dissipation structure is installed inside the base to dissipate heat from the high-voltage sensor body, extending its service life. Furthermore, non-contact voltage measurement can be performed through the high-voltage sensor body, ensuring safety. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the assembly structure of the contact wire, locomotive, height limit line, and base in the sealed anti-interference roof high-voltage sensor of this utility model;

[0016] Figure 2 This is a schematic diagram of the three-dimensional assembly structure of the base and the high-voltage sensor body in the sealed anti-interference roof high-voltage sensor of this utility model;

[0017] Figure 3 This is a schematic diagram of the assembly cross-sectional structure of the base and the high-voltage sensor body in the sealed anti-interference roof high-voltage sensor of this utility model.

[0018] In the diagram: 1. Overhead contact wire; 2. Locomotive; 3. Height restriction line; 4. Base; 5. High voltage sensor body; 6. Electric cylinder; 7. Exhaust fan; 8. Rotating frame; 9. Rotating shaft; 10. Air blower; 11. Push plate; 12. Shock absorber; 13. Mounting plate; 14. Infrared rangefinder; 15. Auxiliary plate. Detailed Implementation

[0019] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0020] Please see Figures 1 to 3 This utility model provides a technical solution: a sealed anti-interference roof-mounted high-voltage sensor, including a base 4 located below the contact wire 1 and the height limit line 3 and fixed to the top of the locomotive 2. A push plate 11 is mounted on the base 4, and an mounting plate 13 is mounted on the push plate 11. A high-voltage sensor body 5 is fixed on the mounting plate 13. A shock-absorbing structure is installed between the push plate 11 and the mounting plate 13. A heat dissipation structure is installed inside the base 4. An air blowing head 10 is rotatably fitted on the base 4. The air blowing head 10 corresponds to the push plate 11, and the heat dissipation structure corresponds to the air blowing head 10.

[0021] The high-voltage sensor body 5 detects the voltage of the contact wire 1 by detecting electromagnetic induction. Then, based on the voltage and height parameters of the contact wire 1 and the height parameters of the locomotive 2, it calculates the effective value of the voltage of the contact wire 1. This scheme can effectively shield other interference signals, thereby improving the accuracy of detection.

[0022] The high-voltage sensor body 5 calculates the high-voltage signal of the contact wire 1 by detecting the induced current generated by the magnetic field strength near the contact wire 1 through a conductor. According to the electric field formula, the detected current value is directly proportional to the contact wire voltage and inversely proportional to the distance from the detection point. According to the "Railway Technical Management Regulations," the rated operating voltage of the contact wire is 25kV, the maximum operating voltage is 27.5kV, and the minimum operating voltage is 19kV. According to the relevant design standard GB 146.1, the maximum height of the contact wire in my country is currently 6.5m, and the design height of the contact wire operation vehicle is 4.65m. Therefore, the distance between the operation vehicle and the contact wire is 1.85m, while the height of the sensor's mounting base is 0.15m. Therefore, the sensing distance needs to be ≤1.7 meters. Thus, the system's high-voltage sensor can detect a contact wire voltage signal of 19kV or higher within a 2-meter range, and considers it a valid high-voltage signal.

[0023] In this embodiment, an electric cylinder 6 is fixed inside the base 4, and the output end of the electric cylinder 6 is fixedly connected to the push plate 11. The shock absorption structure includes a shock absorber 12, which is fixedly connected to the push plate 11 and the mounting plate 13. An infrared rangefinder 14 is fixed on the base 4.

[0024] Specifically, the contact wire 1 usually has a certain curvature. The height of the contact wire 1 can be measured by the infrared rangefinder 14. Based on the height of the contact wire 1, the electric cylinder 6 is activated, which pushes the push plate 11 to move, thereby pushing the high voltage sensor body 5 to adjust its height up and down.

[0025] The heat dissipation structure includes an exhaust fan 7, which is fixed on both sides of the base 4. The exhaust end of the exhaust fan 7 is connected to the air blowing head 10. A rotating frame 8 is fixed on the base 4. A rotating shaft 9 is rotatably fitted inside the rotating frame 8. The rotating shaft 9 is fixedly connected to the air blowing head 10. A push plate 11 is fixed on the side of the push plate 11. The push plate 11 is in contact with the air blowing head 10. A controller is fixed inside the base 4. The controller is electrically connected to the high-voltage sensor body 5.

[0026] Specifically, the high-voltage sensor body 5 can be cooled by drawing air out through the exhaust fan 7 and blowing it out through the air blower 10. When the push plate 11 moves up and down, it can push the air blower 10 to rotate, thereby changing the blowing angle and ensuring the heat dissipation effect.

[0027] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A sealed, interference-resistant roof high-pressure sensor, comprising a base (4) located under the catenary (1) and height-limiting line (3) and fixed to the roof of a locomotive (2), characterized in that, The base (4) is provided with a push plate (11), the push plate (11) is provided with a mounting plate (13), the mounting plate (13) is fixed with a high pressure sensor body (5), a damping structure is arranged between the push plate (11) and the mounting plate (13), a heat dissipation structure is arranged in the base (4), the base (4) is rotatably provided with a blowing head (10), the blowing head (10) corresponds to the push plate (11), and the heat dissipation structure corresponds to the blowing head (10).

2. The sealed, tamper-resistant roof high pressure sensor of claim 1, wherein: The base (4) is provided with a push plate (11), the push plate (11) is provided with a mounting plate (13), the mounting plate (13) is fixed with a high pressure sensor body (5), a damping structure is arranged between the push plate (11) and the mounting plate (13), a heat dissipation structure is arranged in the base (4), the base (4) is rotatably provided with a blowing head (10), the blowing head (10) corresponds to the push plate (11), and the heat dissipation structure corresponds to the blowing head (10).

3. The sealed, tamper-resistant roof high pressure sensor of claim 1, wherein: The damping structure comprises a shock absorber (12), and the shock absorber (12) is fixedly connected with the push plate (11) and the mounting plate (13).

4. The sealed, tamper-resistant roof high pressure sensor of claim 1, wherein: The heat dissipation structure comprises an exhaust fan (7), the exhaust fan (7) is fixed on both sides of the base (4), and the exhaust fan (7) is communicated with the blowing head (10) through an air outlet.

5. The sealed, tamper-resistant roof-mounted high pressure sensor of claim 1, wherein: The base (4) is provided with an infrared range finder (14).

6. The sealed, tamper-resistant roof-mounted high pressure sensor of claim 1, wherein: The base (4) is provided with a rotating frame (8), the rotating frame (8) is rotatably provided with a rotating shaft (9), and the rotating shaft (9) is fixedly connected with the blowing head (10).

7. The sealed, tamper-resistant roof-mounted high pressure sensor of claim 1, wherein: The side surface of the push plate (11) is fixed with a push plate (11), and the push plate (11) is in contact with the blowing head (10).

8. The sealed, tamper-resistant roof-mounted high pressure sensor of claim 1, wherein: The base (4) is provided with a controller, and the controller is electrically connected with the high pressure sensor body (5).

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