CN216489067U - Tower machine high voltage power supply system - Google Patents

Abstract

The utility model belongs to the technical field of tower cranes, and in particular relates to a high-voltage power supply system for tower cranes, comprising a ground high-voltage power supply cabinet installed at the bottom of the tower, a box-type substation installed on the top platform of the tower crane, and a high-voltage feeder cabinet connected to the substation and The ground high-voltage power supply cabinet, the ground high-voltage power supply cabinet and the high-voltage cable of the box-type substation, the box-type substation is composed of a high-voltage power supply unit, a transformer unit and a low-voltage power consumption unit connected in sequence, and the outgoing line of the ground high-voltage power supply cabinet is connected to the The high-voltage power-in unit is connected, and the low-voltage power-consuming unit is connected with each power-consuming unit of the tower crane. The utility model provides a high-voltage power supply system for a tower crane, which adopts a high-voltage power supply mode to supply power for the tower crane, which can greatly reduce the nominal cross-section of a single-phase power supply cable, is simple in manufacture, is convenient in on-site installation and reduces in cost.

Description

A high-voltage power supply system for tower cranes

technical field

The utility model belongs to the technical field of tower cranes, in particular to a high-voltage power supply system for tower cranes.

Background technique

In the existing tower crane industry, the low-voltage three-phase AC 380V/400V power supply is generally used for power supply, but for large or super-large tower cranes, due to the large power required, if the low-voltage three-phase AC 380V/400V power supply is used, the single-phase Due to the large current carried by the cable, the nominal cross-section of the single-phase cable may even reach more than 300 square millimeters, which is expensive and causes great difficulties in manufacturing and on-site installation and construction.

Utility model content

In view of the above problems, the present invention provides a high-voltage power supply system for tower cranes.

For realizing the above-mentioned purpose, the utility model adopts the following technical scheme:

A high-voltage power supply system for a tower crane includes a ground high-voltage power supply cabinet installed at the bottom of the tower, a box-type substation installed on the top platform of the tower crane, and a high-voltage feeder cabinet connecting the substation and the ground high-voltage power supply cabinet, and the ground high-voltage power supply cabinet and the box. A high-voltage cable of a high-voltage substation, the box-type substation is composed of a high-voltage power inlet unit, a transformer unit and a low-voltage power consumption unit connected in sequence. The unit is connected with each power unit of the tower crane.

Further, the ground high-voltage power supply cabinet mainly includes an isolating switch, a vacuum circuit breaker, a voltage transformer, and a current transformer which are connected in sequence.

Further, the ground high-voltage power supply cabinet is also provided with a microcomputer protection device and a live display.

Further, the electrification display includes an incoming electrification display arranged at the front end of the isolation switch and an exit electrification electrification display arranged at the current transformer.

Further, the current transformer is a zero-sequence current transformer.

Further, the high-voltage power feeding unit mainly includes a load switch and a fuse.

Further, the high-voltage power feeding unit further includes a charging indicator, which is provided with a charging indicator at the front end of the load switch, and a charging indicator is provided at the outlet end of the high-voltage feeding unit.

Further, the transformer unit mainly includes a transformer.

Further, the transformer is a dry-type transformer.

Further, multiple load lines are arranged in the low-voltage power consumption unit and are connected to the power consumption unit of the tower crane through a terminal load switch.

The utility model provides a high-voltage power supply system for a tower crane, which adopts a high-voltage power supply mode to supply power to the tower crane, which can greatly reduce the nominal cross-section of a single-phase power supply cable, is simple in manufacture, convenient in on-site installation and reduces in cost.

Description of drawings

Figure 1: Diagram of the tower crane's high-voltage power supply system.

Detailed ways

The present utility model will be further described below in conjunction with the accompanying drawings and embodiments, but not as a basis for limiting the present utility model.

As shown in Figure 1, a high-voltage power supply system for a tower crane includes a ground high-voltage power supply cabinet 2 installed at the bottom of the tower for power distribution control and protection, and a box-type substation 3 installed on the top platform of the tower crane to convert high voltage into low voltage to supply each power Unit; high-voltage cable 4 is used for the connection between the high-voltage feeder cabinet 1 of the substation and the ground high-voltage power supply cabinet 2, the ground high-voltage power supply cabinet 2 and the box-type transformer substation 3 on the top platform of the tower crane.

The ground high-voltage power supply cabinet 2 is installed at the bottom of the tower crane, and the high-voltage introduced by the high-voltage feeder cabinet 1 of the substation passes through the isolating switch 21, the vacuum circuit breaker 22, the voltage transformer 23, and the current transformer 24 in sequence, and finally leads to the high-voltage cable 4. Box-type substation 3 on the top platform of the tower crane. The ground high-voltage power supply cabinet is equipped with a microcomputer protection device and a live display to monitor parameters such as high-voltage input and output voltage and current. An incoming electrified display 26 is arranged at the front end of the isolation switch 21 , and an electrified electrified display 25 is arranged at the current transformer 24 . The current transformer 24 is a zero sequence current transformer.

The box-type substation 3 on the top platform of the tower crane is composed of a high-voltage power feeding unit 31 , a transformer unit 32 and a low-voltage power consumption unit 33 . The outlet line of the ground high-voltage power supply cabinet 2 is connected to the high-voltage power supply unit 31, and enters the transformer unit 32 through the load switch 311 and the fuse 312 in turn. of each power unit. The incoming and outgoing ends of the high-voltage power feeding unit 31 of the box-type substation 3 are equipped with a live display to monitor parameters such as voltage and current. . The transformer 321 of the transformer unit 32 is a dry-type transformer. The low-voltage power consumption unit 33 is provided with multiple load lines to supply power to each power consumption unit of the tower crane. Each load line is connected to the power consumption unit through the terminal load switch 331 .

Claims (10)

1. The utility model provides a tower machine high voltage power supply system, includes ground high voltage power supply cabinet (2) of installing at the tower bottom and install box-type substation (3) and connect high voltage feeder cabinet (1) of electric substation and ground high voltage power supply cabinet (2), ground high voltage power supply cabinet (2) and high tension cable (4) of box-type substation (3) on tower machine top platform, its characterized in that: the box-type substation (3) is formed by a high-voltage power supply unit (31), a power converter unit (32) and a low-voltage power utilization unit (33) which are sequentially connected, an outgoing line of the ground high-voltage power supply cabinet (2) is connected with the high-voltage power supply unit (31), and the low-voltage power utilization unit (33) is connected with each power utilization unit of the tower crane.

2. The tower crane high-voltage power supply system according to claim 1, characterized in that: the ground high-voltage power supply cabinet (2) mainly comprises an isolating switch (21), a vacuum circuit breaker (22), a voltage transformer (23) and a current transformer (24) which are connected in sequence.

3. The tower crane high-voltage power supply system according to claim 2, characterized in that: the ground high-voltage power supply cabinet (2) is also provided with a microcomputer protection device and an electrified display.

4. The tower crane high-voltage power supply system according to claim 3, characterized in that: the live display comprises a live incoming display (26) arranged at the front end of the isolating switch (21) and a live outgoing display (25) arranged at the current transformer (24).

5. A tower crane high-voltage power supply system according to any one of claims 2, 3 and 4, characterized in that: the current transformer (24) is a zero sequence current transformer.

6. The tower crane high-voltage power supply system according to claim 1, characterized in that: the high-voltage power inlet unit (31) mainly comprises a load switch (311) and a fuse (312).

7. The tower crane high-voltage power supply system according to claim 6, characterized in that: the high-voltage electricity inlet unit (31) further comprises an electrified display, the electrified display (314) is arranged at the front end of the load switch (311), and the electrified display (313) is arranged at the outlet end of the high-voltage electricity inlet unit (31).

8. The tower crane high-voltage power supply system according to claim 1, characterized in that: the converter unit (32) mainly includes a transformer (321).

9. The tower crane high-voltage power supply system according to claim 8, characterized in that: the transformer (321) is a dry transformer.

10. The tower crane high-voltage power supply system according to claim 1, characterized in that: and a multi-path load circuit is arranged in the low-voltage power utilization unit (33) and is connected with the power utilization unit of the tower crane through a terminal load switch (331).

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