CN201440161U - Locomotive Roof Insulation Testing Equipment - Google Patents

Abstract

The utility model discloses a locomotive roof insulation detection device. The locomotive roof insulation detection device comprises: a power input port, an inverter, a high-voltage equipment connection port and a voltage detection device; wherein, the power input port is connected to an external The power supply is connected to obtain direct current; the inverter is connected to the input port of the power supply to convert the direct current into alternating current; the connection port of the high-voltage equipment is connected to the inverter to convert the alternating current generated by the inverter The voltage is transmitted to the external high-voltage equipment; the voltage detection device is connected to the connection port of the high-voltage equipment to detect the voltage of the external high-voltage equipment. The locomotive roof insulation detection device can quickly and accurately judge whether the roof high-voltage equipment is grounded or the insulation is reduced, and the implementation is simple, providing effective technical guarantee for the safe operation of the electric locomotive.

Description

Locomotive Roof Insulation Testing Equipment

technical field

The utility model relates to the field of electric locomotives, in particular to a locomotive roof insulation detection device.

Background technique

Usually, the high-voltage equipment on the roof of the locomotive is installed outdoors, so high-voltage electrical equipment and the roof of the locomotive are required to have good insulation performance to effectively prevent wind, sand, rain, snow and other harsh weather and lightning attacks. When the locomotive is running, if the high-voltage equipment on the roof fails, such as pantograph scraping, main circuit breaker porcelain explosion, porcelain bottle flashing, etc., it will lead to high-voltage discharge and grounding, resulting in damage to high-voltage equipment and failure of the operating catenary. Paralyzed, seriously affecting the normal order of traffic safety and railway transportation.

At present, the existing locomotive roof insulation detection equipment is too complicated and the detection is not fast enough and accurate enough. In this case, if the high-voltage equipment fails, the fault cannot be detected in time when the locomotive is raised and the main circuit breaker is started. Cause great damage, even hurt people's bodies.

Utility model content

The purpose of the utility model is to provide a locomotive roof insulation detection device, which can solve the problem that the high-voltage equipment on the roof cannot be easily, quickly and accurately detected whether it is grounded or the insulation is lowered.

In order to solve the above problems, the utility model provides a locomotive roof insulation detection equipment, including: a power input port, an inverter, a high-voltage equipment connection port and a voltage detection device; wherein,

The power input port is connected to an external power source to obtain direct current;

The inverter is connected to the power input port to convert the direct current into alternating current;

The high-voltage equipment connection port is connected to the inverter, and the alternating current generated by the inverter is transmitted to the external high-voltage equipment;

The voltage detection device is connected to the connection port of the high-voltage equipment to detect the voltage of the external high-voltage equipment.

The implementation of the embodiment of the utility model can quickly and accurately judge whether the high-voltage equipment on the roof is grounded or the insulation is lowered, and the implementation is simple, providing effective technical guarantee for the safe operation of the electric locomotive.

Description of drawings

The accompanying drawings described here are used to provide a further understanding of the utility model, constitute a part of the application, and do not constitute a limitation to the utility model. In the attached picture:

Fig. 1 is the structural representation of the locomotive roof insulation detection equipment of the utility model embodiment;

Fig. 2 is another structural schematic diagram of the insulation detection equipment for the roof of a locomotive according to the embodiment of the present invention.

Fig. 3 is a specific embodiment of the structural diagram of the insulation detection equipment for the roof of the locomotive in the utility model embodiment in Fig. 2 .

Fig. 4 is another specific embodiment of the structure schematic diagram of the insulation detection equipment for the roof of the locomotive according to the utility model embodiment in Fig. 2 .

Fig. 5 is a schematic diagram of the application of the locomotive roof insulation detection device in the embodiment of the present invention on an electric locomotive.

Detailed ways

In order to make the purpose, technical solutions and advantages of the utility model clearer, the embodiments of the utility model will be further described in detail below in conjunction with the accompanying drawings. Here, the exemplary embodiment of the utility model and its description are used to explain the utility model, but not as a limitation to the utility model.

Fig. 1 is a schematic structural diagram of a locomotive roof insulation testing device according to an embodiment of the present invention.

As shown in Figure 1, the insulation detection equipment on the roof of the locomotive in this embodiment includes a power input port 101, an inverter 102, a high voltage equipment connection port 103 and a voltage detection device 104;

When the locomotive roof insulation detection device in this embodiment is working, the power input port 101 is connected to an external power source to obtain direct current; the inverter 102 converts the direct current provided by the power input port 101 into alternating current, and transmits it to the high-voltage equipment connection port 103; the high-voltage equipment connection port 103 transmits the alternating current generated by the inverter 102 to the external high-voltage equipment; the voltage detection device 104 is connected to the high-voltage equipment connection port 104, and is used to detect the voltage change of the connected external high-voltage equipment, thereby detecting the vehicle Insulation performance of high voltage equipment.

Fig. 2 is another structural schematic diagram of the insulation detection equipment for the roof of a locomotive according to the embodiment of the present invention.

The locomotive roof insulation testing equipment in this embodiment also includes a locomotive roof insulation testing equipment shell, and the insulation testing equipment shell includes: a detection switch 201, which is connected to the power input port 101, and controls the working state of the locomotive roof insulation testing equipment. When testing, the locomotive roof insulation testing equipment can operate normally only when the testing switch 201 is pressed;

The indicator light 203 is connected to the voltage detection device 104 and the detection switch 201, which is convenient for observing the working state and detection results of the insulation detection equipment on the roof of the locomotive more intuitively. Indicator lights 203 include:

The power indicator light 2031 is connected with the detection switch 201 to indicate the working status of the insulation detection equipment on the roof of the locomotive. When the detection switch 201 is pressed, if the power indicator light 2031 is on, it indicates that the equipment is working normally; if it is not on, it indicates that it is working. Abnormal, at this time, check whether the power input port has power input;

The grounding indicator light 2032 is connected with the voltage detection device 104 to indicate grounding or insulation reduction. When this light and the power indicator light 2031 are on at the same time, it proves that the measured high-voltage equipment on the roof is grounded;

The normal indicator light 2033 is connected with the voltage detection device 104. When this light and the power indicator light 2031 are on simultaneously, it shows that the insulation performance of the high-voltage equipment on the roof of the vehicle is good.

The electrical connector 202 is connected to the power input port 101 and is used for connecting power input and output signal lines.

When the insulation detection equipment on the roof of the locomotive in the embodiment shown in Fig. 2 is working, the external power supply 110V DC is connected to the power input port 101 through the electrical connector 202, and the detection switch 201 is pressed, and the power indicator light 2031 is on at this time, It proves that the insulation detection equipment on the roof of the locomotive is working normally; after the inverter 102 converts the direct current into alternating current, it outputs to the external high-voltage equipment through the high-voltage equipment connection port 103, and the voltage detection device 104 is connected to the high-voltage equipment connection port 104 to detect The voltage change of the connected external high-voltage equipment, if the voltage detection device 104 detects that the external high-voltage equipment is normal, that is, the insulation performance is good, and the normal indicator light 2033 is on at this time, if the external high-voltage equipment is abnormal, that is, the insulation is reduced or grounded, then the current The ground indicator light 2032 is on.

Embodiment one:

Fig. 3 is a specific embodiment of the structural diagram of the insulation detection equipment for the roof of the locomotive in the utility model embodiment in Fig. 2 .

As shown in Figure 3, in the present embodiment, the high-voltage equipment connection port 103 of the locomotive roof insulation detection equipment is connected to the high-voltage voltage transformer of the locomotive, and the high-voltage voltage transformer is connected to the high-voltage equipment on the locomotive roof. The voltage of the secondary winding is used to detect the insulation performance of the high-voltage equipment on the roof of the locomotive.

In this embodiment, the voltage detection device 104 is a network voltage gauge 204, which is connected in parallel to both ends of the high-voltage equipment connection port 103, that is, connected in parallel to both ends of the high-voltage voltage transformer, and used to measure the voltage of the secondary winding of the high-voltage voltage transformer; The seven-pin socket 301 is used as an electrical connector to connect the power input and output signal lines, that is, to input 110V direct current, which is supplied by the internal power supply of the locomotive; the headlight switch 302 is used to provide the detection signal power of the locomotive roof insulation detection equipment , when the headlight switch 302 is closed, the internal power supply of the locomotive can provide 110V power for the detection equipment; the detection switch 201 is used to control the working state of the entire locomotive roof insulation detection equipment, and when the detection equipment is determined to be used, the detection switch 201 is turned on , then the detection equipment can work normally.

The indicator light 203 has three indicator lights, which are beneficial to more intuitively and accurately judge the insulation status of the high-voltage equipment on the roof of the locomotive. The indicator lights are respectively:

The power indicator light 2031 is used to indicate whether the insulation detection equipment on the roof of the locomotive is working normally;

Grounding indicator light 2032, when the roof high-voltage equipment is grounded, the indicator light is on;

Normal indicator light 2033, when the roof high-voltage equipment works normally, this indicator light is on.

When the roof insulation detection equipment in this embodiment is working, first disconnect the locomotive key 303, that is, disconnect the main circuit breaker, and make the locomotive in a stopped state. At this time, connect the seven-pin socket 301, and close the locomotive headlight switch 302, that is, Connect the power supply and the signal source of the whole locomotive roof detection equipment; secondly, press the detection switch 201, if the power indicator light 2031 is bright, then it shows that the equipment works normally and can be detected.

During detection, the inverter 102 converts the obtained 110V direct current into 50Hz/100V alternating current, and transmits it to the locomotive high-voltage voltage transformer through the high-voltage equipment connection port 103, and the high-voltage voltage transformer boosts the 50Hz/100V alternating current to 25KV and then adds On roof high voltage equipment. If the high-voltage equipment on the roof is normal, the network voltage gauge 204 shows 25KV, which indicates that the high-voltage equipment on the roof is well insulated, and the normal indicator light 2033 is on; Characteristics and equipotential characteristics, network voltage gauge 204 then shows as 0V, and grounding indicator light 2032 is bright simultaneously, shows that the roof high-voltage equipment has been grounded at this moment, must not raise pantograph. That is, the insulation performance of the high-voltage equipment on the roof of the locomotive can be visually detected by observing the voltage value displayed by the network voltage gauge and the indicator light.

Embodiment two:

Fig. 4 is another specific embodiment of the structure schematic diagram of the insulation detection equipment for the roof of the locomotive according to the utility model embodiment in Fig. 2 .

As shown in Figure 4, in the locomotive roof insulation detection equipment in this embodiment, the DC power 110V required by the equipment is provided by the battery 401, and the operation of the battery is controlled by a contact switch 402, and the contact switch 402 also controls the entire locomotive The working status of the roof insulation testing equipment. Only when it is determined to use the detection device, close the contact switch 402, at this time, the insulation detection device on the roof of the locomotive obtains direct current, and starts detection at the same time. The voltage detection device 104 is also a network voltage gauge 204, which measures the voltage at both ends of the secondary winding of the high voltage voltage transformer.

The indicator light device 203 has three indicator lights, which are beneficial to more intuitively and accurately judge the insulation status of the high-voltage equipment on the roof of the locomotive. The indicator lights are respectively:

Power indicator light 2031, which is connected to the power input port 101, is used to indicate whether the insulation detection equipment on the roof of the locomotive is working normally. When the power input port has current, this light is on, indicating that the insulation detection equipment on the roof of the locomotive can work normally;

Grounding indicator light 2032, when the high-voltage equipment on the roof is grounded or the insulation is lowered, the indicator light is on;

Normal indicator light 2033, when the roof high-voltage equipment works normally, this indicator light is on.

When the roof insulation detection device in this embodiment works, first close the contact switch 402, connect the battery 401, the power input port 101 obtains the 110V direct current provided by the battery, and the inverter 102 converts the obtained 110V direct current into 50Hz/ The 100V alternating current is transmitted to the locomotive high-voltage voltage transformer through the high-voltage equipment connection port 103, and the high-voltage voltage transformer boosts the 50Hz/100V alternating current to 25KV and then adds it to the high-voltage equipment on the roof. If the high-voltage equipment on the roof is normal, the network voltage gauge 204 shows 25KV, indicating that the high-voltage equipment on the roof is well insulated, and the normal indicator light 2033 is on; Characteristic and equipotential characteristic, network voltage gauge 204 then shows as 0V, and grounding indicator light 2032 is bright simultaneously, shows that the roof high-voltage equipment has been grounded at this moment, must not raise pantograph. That is, the insulation performance of the high-voltage equipment on the roof of the locomotive can be visually detected by observing the voltage value displayed by the network voltage gauge and the indicator light.

Fig. 5 is a schematic diagram of the application of the locomotive roof insulation detection device in the embodiment of the present invention on an electric locomotive. Before the electric locomotive is started, it is necessary to check the insulation performance of the high-voltage equipment on the roof of the locomotive to ensure the safety of the train.

As shown in Figure 5, the locomotive roof insulation detection equipment described in the embodiment of the present invention is suitable for locomotives or engineering vehicles working under single-phase, power frequency, AC voltage 25KV catenary, and must be unmanned and unattended on the locomotive roof. Can only be used with the roof doors locked. The locomotive roof insulation testing equipment can be installed on the operating platform of the driver's cab to facilitate the driver's observation. In addition, shielded cables are used for cables connecting the locomotive roof insulation testing equipment and high-voltage voltage transformers.

The specific embodiments described above further describe the purpose, technical solutions and beneficial effects of the present utility model in detail. Within the protection scope of the utility model, any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the utility model shall be included in the protection scope of the utility model.

Claims (10)

1. The utility model provides a locomotive roof insulation check out test set which characterized in that, locomotive roof insulation check out test set includes: the device comprises a power input port, an inverter, a high-voltage equipment connecting port and a voltage detection device; wherein,

the power supply input port is connected with an external power supply to obtain direct current;

the inverter is connected with the power input port and converts the direct current into alternating current;

the high-voltage equipment connecting port is connected with the inverter and transmits alternating current generated by the inverter to external high-voltage equipment;

the voltage detection device is connected with the high-voltage equipment connection port and used for detecting the voltage of external high-voltage equipment.

2. The locomotive roof insulation detection device of claim 1, wherein the high voltage device connection port is connected to a locomotive high voltage transformer.

3. The locomotive roof insulation detection device of claim 1, wherein the voltage detection means is a grid voltage meter.

4. The locomotive roof insulation detection device of claim 1, wherein the external power source may be a locomotive internal power source or a battery.

5. The locomotive roof insulation detection device of claim 1, further comprising a locomotive roof insulation detection device housing.

6. The locomotive roof insulation detection device of claim 5, wherein the locomotive roof insulation detection device housing comprises:

the detection switch is connected with the power input port and controls the working state of the locomotive roof insulation detection equipment;

and the indicating lamp is connected with the voltage detection device and the detection switch and indicates a detection result.

7. The locomotive roof insulation detection device of claim 5, wherein the locomotive roof insulation detection device housing comprises:

and the electric connector is connected with the power input port and is connected with a power input/output signal wire.

8. The locomotive roof insulation detection apparatus of claim 6, wherein the indicator light comprises:

and the power indicator light is connected with the detection switch and indicates the working state of the locomotive roof insulation detection system.

9. The locomotive roof insulation detection apparatus of claim 6, wherein the indicator light comprises:

and the grounding indicator light is connected to the voltage detection device and indicates grounding or insulation reduction.

10. The locomotive roof insulation detection apparatus of claim 6, wherein the indicator light comprises:

and the normal indicator light is connected with the voltage detection device and has good indication insulation performance.

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