CN205452924U - Voltage transformer cubical switchboard handcart - Google Patents

Abstract

This utility model discloses a voltage transformer switchgear trolley, including a frame, a voltage transformer mounted on the upper part of the frame, an insulator bracket mounted in the middle of the frame, an insulator fixed on the insulator bracket, a support at the end of the insulator, a contact arm fixedly mounted on the support, a contact at the end of the contact arm, an overvoltage protector mounted on the lower part of the frame, and a chassis trolley mounted at the bottom of the frame, with a door push plate mounted on the chassis trolley. This utility model has the following advantages: 1. Simple structure, reasonable layout, low cost, short processing cycle, convenient assembly and maintenance. Simultaneously, the overvoltage protector enables the entire PT trolley electrical equipment system to operate more effectively, better solving the insulation problem of high-current PT trolleys, protecting them from overvoltage damage, and making safety performance more reliable; 2. It also provides a new option for the PT trolley structure of a 1000mm wide centrally located switchgear cabinet.

Description

A kind of handcart for voltage transformer switchgear

technical field

The utility model relates to the technical field of switch cabinets, in particular to a handcart for a voltage transformer switch cabinet.

Background technique

The PT cabinet is also called the voltage transformer cabinet. The function of the voltage transformer is to measure the primary voltage and convert the voltage into a standard low voltage in proportion, which is used for voltage measurement, electric energy measurement and relay protection signal; in the general PT cabinet There are PT handcarts, lightning arresters and some secondary equipment, because PT handcarts have: voltage measurement, providing voltage loops for measuring meters; providing operation and control power; installation of overvoltage protectors for each busbar; relay protection With the development and demand of the power market and the advancement of high-voltage switch technology, it has accelerated the need for some PT hand switches with high technical parameters and reliable performance. Vehicle research, especially social development requires that complete sets of equipment be transferred to the direction of high current. The PT handcarts that are equipped are required to be more reliable in performance and easier to maintain. At the same time, more structural forms of high-current PT handcarts are required.

Utility model content

The technical problem to be solved by the utility model is to provide a voltage transformer switch cabinet handcart with reasonable layout, convenient assembly and high safety performance in view of the deficiencies in the prior art.

In order to solve the above-mentioned technical problems, the technical solution of the utility model is: a handcart for a voltage transformer switch cabinet, including a vehicle frame, a voltage transformer is installed on the upper part of the vehicle frame, and a An insulator bracket, an insulator is fixed on the insulator bracket, a support is provided at the end of the insulator, a contact arm is fixedly installed on the support, and a contact is provided at the end of the contact arm. The lower part of the frame is provided with an overvoltage protector, the bottom of the frame is provided with a chassis, and the chassis is provided with a valve push plate.

The contacts described are plum-blossom contacts.

The front end of the vehicle frame is provided with a front panel, the top of the vehicle frame is provided with a middle sealing plate, and the left and right sides of the vehicle frame are respectively provided with a left sealing plate and a right sealing plate.

The contact arm sleeve is sleeved on the contact arm.

The overvoltage protector is connected with the support.

The utility model adopts the above-mentioned structure and has the following advantages: 1. Simple structure, reasonable layout, low cost, short processing cycle, convenient assembly and maintenance, and at the same time, the overvoltage protector can make the entire PT vehicle electrical equipment system run more effectively and more efficiently. It solves the insulation problem of high-current PT handcarts, making it free from overvoltage damage, and the safety performance is more reliable; 2. In addition, it also provides a PT car structure style for the 1000mm cabinet width center-mounted handcart cabinet. new options.

Description of drawings

Below in conjunction with accompanying drawing and specific embodiment the utility model is described in further detail;

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

Fig. 2 is the structural representation of front panel in the utility model;

In Figures 1 to 2, 1. Vehicle frame; 2. Voltage transformer; 3. Fused core; 4. Insulator; 5. Support; 6. Contact; 7. Contact arm; 8. Insulator support; 9. Voltage protector; 10, valve push plate; 11, chassis car; 12, left sealing plate; 13, middle sealing plate; 14, right sealing plate.

detailed description

As shown in Figures 1 to 2, a voltage transformer switch cabinet handcart includes a frame 1, and a voltage transformer 2 is installed on the upper part of the frame 1. The voltage transformer 2 has the function of converting the high voltage into 100V or 100V in proportion. The standard secondary voltage of a lower level is used for protection, metering, and instrumentation; an insulator bracket 8 is installed in the middle of the vehicle frame 1, and an insulator 4 is fixed on the insulator bracket 8, and the insulator 4 ensures that the vehicle Insulation of shelf 1. The end of the insulator 4 is provided with a support 5, and the contact arm 7 is fixedly installed on the support 5. The end of the contact arm 7 is provided with a contact 6. The contact 6 is a plum blossom contact, and the plum blossom contact 6 is connected to the cabinet of the switch cabinet. The bottom of the vehicle frame 1 is provided with an overvoltage protector 9, which can protect the insulation of electrical equipment from overvoltage damage; the overvoltage protector 9 is connected to the support 5.

The bottom of vehicle frame 1 is provided with chassis car 11, is provided with valve push pedal 10 on the chassis car 11, and valve push pedal 10 is connected to the rear end end of chassis car 11. The voltage transformer 2 and the support 5 are connected through a fuse 3 . A front panel 15 is arranged on the front end of the vehicle frame 1, a middle sealing plate 13 is arranged on the top of the vehicle frame 1, a left sealing plate 12, a right sealing plate 14 are respectively arranged on the left and right sides of the vehicle frame 1, a middle sealing plate 13, a left sealing plate 12. The right sealing plate 14 plays a very good role in protecting the vehicle frame 1. The contact arm 7 is sleeved with a contact arm sleeve to ensure the insulation between the contact arm 7 and the outside world.

The utility model has the advantages of simple structure, convenient assembly and maintenance, and at the same time, can protect the PT vehicle from overvoltage damage, make the equipment run more effectively and safely, and also enrich the structural style of the PT vehicle.

The utility model has been exemplarily described above in conjunction with the accompanying drawings. Obviously, the specific implementation of the utility model is not limited by the above methods, as long as the various improvements of the technical solution of the utility model are adopted, or directly applied to other applications without improvement. Occasions, all within the protection scope of the present utility model.

Claims (5)

1. A voltage transformer switchgear handcart, is characterized in that: comprise vehicle frame, the top of described vehicle frame is equipped with voltage transformer, and the middle part of described vehicle frame is equipped with insulator support, and described insulator support An insulator is fixed on the top of the insulator, a support is provided at the end of the insulator, a contact arm is fixedly installed on the support, a contact is provided at the end of the contact arm, and an overvoltage protection device is provided at the lower part of the frame. Protector, the bottom of the frame is provided with a chassis, and the chassis is provided with a valve push plate. 2. The handcart of a voltage transformer switch cabinet according to claim 1, characterized in that: said contacts are plum blossom contacts. 3. A handcart for a voltage transformer switch cabinet according to claim 1, wherein a front panel is provided on the front end of the vehicle frame, a middle sealing plate is provided on the top of the vehicle frame, and the The left and right sides of the vehicle frame are respectively provided with a left sealing plate and a right sealing plate. 4. The handcart of a voltage transformer switch cabinet according to claim 1, characterized in that: the contact arm sleeve is sleeved on the contact arm. 5. A handcart for voltage transformer switchgear according to claim 1, characterized in that: said overvoltage protector is connected to the support.