CN201556856U - Integrated cabinet of high-voltage electrical appliance of electrical locomotive - Google Patents

Abstract

The utility model discloses an integrated cabinet of a high-voltage electrical appliance of an electrical locomotive, which can improve the working environment of the high-voltage electrical appliance of the electrical locomotive, prolong the service life of the high-voltage electrical appliance, enhance the application reliability of the locomotive and reduce the maintenance working load of the high-voltage electrical appliance. The integrated cabinet comprises a metal cabinet body (1), wherein a cabinet door of the metal cabinet body (1) is provided with a lock (2); the metal cabinet body (1) is provided with a grounding wire (3) and internally provided with a high-voltage isolating switch (4), a high-voltage potential transformer (5), a vacuum main breaker (6), a high-voltage grounding switch (7) and a lightning arrester (8) which are connected with the grounding wire (3); and the high-voltage grounding switch (7) is a double lock cylinder high-voltage grounding switch, the operation surface is arranged outside the metal cabinet body (1) and a controlled lock cylinder key is matched with a lock cylinder of the lock (2).

Description

Electric locomotive High-Voltage Electrical Appliances integrated cabinet

Technical field:

The utility model relates to a kind of electrical equipment integrated cabinet, especially a kind of electric locomotive High-Voltage Electrical Appliances integrated cabinet that improves locomotive high-voltage electrical work environment, raising High-Voltage Electrical Appliances useful life and locomotive operation reliability, reduces the High-Voltage Electrical Appliances maintenance workload.

Background technology:

At present, the electric power system of China's electric locomotive is to adopt 25000 volts of Alternating Current Power Supplies.For avoiding High-Voltage Electrical Appliances (high voltage isolator, high voltage potential transformer, line vacuum circuit breaker, high voltage ground switch and lightning arrester etc.) that driver and conductor's safety is constituted a threat to and to locomotive internal unit electromagnetic interference etc., the high-voltage electrical equipment of existing electric locomotive is external mode, promptly places on the top cover of vent external.But external mode but exists following problem:

1. there are dust, salt fog, sleet etc. as the interval environment of locomotive operation, just very easily attached on the external high-voltage electrical equipment, directly reduced the insulation distance of high-tension apparatus, in case cause the high voltage fault discharge, not only cause the scaling loss of locomotive itself, also seriously jeopardize driver and conductor's life security, therefore limited the locomotive application environment.

2. the temperature in locomotive operation interval and psychrometric difference very easily cause external High-Voltage Electrical Appliances flashover discharge, and insulator arrangement is produced galvanic corrosion, reduce parts useful life; In addition, being exposed to the sun of sunlight also reduced the useful life of silicon rubber insulation parts greatly.Particularly during the locomotive high-speed cruising, huge windage and branch, aerial floating thing etc. all will make external high electrical equipment produce very serious mechanical failure.

3. the operation of forbidding to climb to the top of a mountain under the high-voltage fence of electric highway section, break down in this highway section as external high-tension apparatus and also can't rush to repair, very inconvenience is even enter no barrier, the service work of climbing to the top of a mountain still belongs to high-risk operations, and potential safety hazard is big, overhaul of the equipments is wasted time and energy, maintenance cost strengthens.

Summary of the invention:

The utility model is in order to solve the above-mentioned technical problem of existing in prior technology, a kind of electric locomotive High-Voltage Electrical Appliances integrated cabinet that improves locomotive high-voltage electrical work environment, raising High-Voltage Electrical Appliances useful life and locomotive operation reliability, reduces the High-Voltage Electrical Appliances maintenance workload to be provided.

Technical solution of the present utility model is: a kind of electric locomotive High-Voltage Electrical Appliances integrated cabinet, metal cabinet 1 is arranged, lock 2 is installed on the cabinet door of metal cabinet 1, it is characterized in that: on metal cabinet 1, be provided with ground link 3, in metal cabinet 1, be provided with the high voltage isolator 4, high voltage potential transformer 5, line vacuum circuit breaker 6, high voltage ground switch 7 and the lightning arrester 8 that join with ground link 3, described high voltage ground switch 7 is twin-lock core high voltage ground switchs, and its operating surface places metal cabinet 1 lock core outer and controlled lock core key wherein and lock 2 to match.

The utility model utilizes high-tension electricity isolation technology, high-tension electricity shield technology and safety interlocking technology, successfully high voltage isolator, high voltage potential transformer, line vacuum circuit breaker, high voltage ground switch and lightning arrester etc. are placed in the cabinet, even in normal working conditions, the attendant also can free-hand touching cabinet, guarantees being perfectly safe of driver and conductor; Communication apparatus to locomotive inside does not have influence, guarantees Control System of Microcomputer equipment operate as normal.Also overcome all baneful influences that prior art (external mode) causes High-Voltage Electrical Appliances because of bad operational environment simultaneously, improved locomotive operation reliability, adaptability; Prolong the useful life of High-Voltage Electrical Appliances, reduced the replacing component costs; Improve the locomotive maintenance simplicity, the high-risk operations such as service work of having avoided climbing to the top of a mountain, repairing, easy to maintenance reduces the component maintenance workload, further reduces the locomotive overall life cycle cost.

Description of drawings:

Fig. 1 is the structural representation of the utility model embodiment.

Embodiment:

Below in conjunction with description of drawings embodiment of the present utility model.As shown in Figure 1: metal cabinet 1 is arranged, utilize the reflection, absorption of metal screen layer and the function that skin effect realizes preventing electromagnetic interference and electromagnetic radiation.

Lock 2 is installed on the cabinet door of metal cabinet 1, on metal cabinet 1, be provided with ground link 3, in metal cabinet 1, be provided with the high voltage isolator 4 that joins with ground link 3, high voltage potential transformer 5, line vacuum circuit breaker 6, high voltage ground switch 7 and lightning arrester 8, creepage distance of self and the electric clearance between parts will be satisfied in the installation site of each High-Voltage Electrical Appliances, simultaneously, adopt string by line, the mode of parallel-connection multiple ground connection makes whole metal cabinet 1 and locomotive and the earth UNICOM, make cabinet 1 become a spherical equipotentiality body, reach in normal working conditions, the attendant also can free-hand touching and personnel are perfectly safe, even the high tension apparatus fault discharge also can pass through ground link, locomotive flows into the earth to rail.Described high voltage ground switch 7 adopts existing twin-lock core high voltage ground switch (model 35KSDP), i.e. a master control lock core, a controlled lock core, after the key of master control lock core inserts, just can carry out safety operations such as ground connection, the key that is inserted on the controlled lock core just can take off ...The operating surface of twin-lock core high voltage ground switch places metal cabinet 1 lock core outer and its controlled lock core key and lock 2 to match.The utility model can be integrated in the locomotive high-voltage safety locking system, in the master control lock core on the key insertion twin-lock core high voltage ground switch, high voltage ground switch is beaten to the ground connection position, and the induced voltage of roof high-tension electricity is by safety ground like this, non-inductive high-tension electricity in the car.Can take out the key of controlled lock core on the twin-lock core high voltage ground switch this moment, could opening installation lock 2 on 1 of metal cabinet, promptly only under the situation of net side loop dead ground, just can open the cabinet door of locomotive high-voltage Electric Appliance Cabinet (metal cabinet), could operate the High-Voltage Electrical Appliances in the metal cabinet 1, can avoid operating personnel's misoperation under high pressure, guarantee personal safety, the key of master control this moment lock core then can't take out.Vice versa, have only all cabinet doors of working as to close and lock, twin-lock core high voltage ground switch just can be beaten to normal operation position, and the master control lock core key could take out, just can carry out such as rising bow gas circuit valve open, rising bow, 25000 volts of high-tension electricities be introduced waited the safety interlocking operation in the metal cabinet 1.

Claims (1)

1. electric locomotive High-Voltage Electrical Appliances integrated cabinet, metal cabinet (1) is arranged, lock (2) is installed on the cabinet door of metal cabinet (1), it is characterized in that: on metal cabinet (1), be provided with ground link (3), in metal cabinet (1), be provided with the high voltage isolator (4) that joins with ground link (3), high voltage potential transformer (5), line vacuum circuit breaker (6), high voltage ground switch (7) and lightning arrester (8), described high voltage ground switch (7) is a twin-lock core high voltage ground switch, and its operating surface places metal cabinet (1) lock core outer and controlled lock core key and lock (2) to match.

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