Circuit breaker, transformer and box transformer substation

Abstract

The invention relates to the technical field of transformer substations, in particular to a circuit breaker, a transformer and a box transformer substation. A box transformer substation comprises a box body, a high-voltage chamber, a transformer and a low-voltage side device are arranged in the box body, the low-voltage side device comprises a circuit breaker, the transformer is arranged beside the high-voltage chamber, the circuit breaker comprises a shell, a contact is arranged on the shell, an installation structure is further arranged on the shell, the transformer comprises a shell, and the shell comprises a transformer side wall. A transformer low-voltage side outgoing line terminal is exposed out of the side wall of the transformer, and a circuit breaker assembling structure is arranged on the side wall of the transformer and used for being fixedly assembled with an installation structure on a circuit breaker so that a contact on the circuit breaker can be connected with the transformer low-voltage side outgoing line terminal when the whole circuit breaker is installed on the side wall of the transformer. And other low-voltage side elements are arranged at the bottom of the box body or on the side wall of the transformer. A certain space is saved, the usage amount of copper bars between the box transformer substation and the box transformer substation is reduced, and the manufacturing cost of the box transformer substation and the consumption of raw materials are reduced.

Claims

1. A circuit breaker, comprising a housing, Characterized in that, The housing is provided with a contact for connecting with the outgoing line terminal (111) of the low-voltage side of the transformer, the contact is connected with the internal switch circuit of the housing, and the housing is further provided with a mounting structure for fixedly assembling with the circuit breaker mounting structure on the side wall of the transformer to integrally mount the circuit breaker on the side wall of the transformer and connect the contact with the outgoing line terminal (111) of the low-voltage side of the transformer.

2. The circuit breaker according to claim 1, Characterized in that, The contact is a duckbill contact (42), and the biting space of the duckbill contact (42) is used for inserting the outgoing line terminal (111) of the low-voltage side of the transformer.

3. The circuit breaker according to claim 1, Characterized in that, The mounting structure includes a hanging part located above the contact and a fixed support part located below the contact.

4. The circuit breaker according to claim 3, Characterized in that, The hanging part includes hook-type mounting plates (41) symmetrically arranged in the horizontal direction, and the end of the hook-type mounting plate (41) is a hook structure with an opening facing downwards for hanging on the hanging pin outside the side wall of the transformer.

5. The circuit breaker according to claim 3, Characterized in that, The fixed support part includes a support bottom plate (43) arranged corresponding to the hook-type mounting plate (41) in the vertical direction, and the support bottom plate (43) is provided with connection holes for bolt connection with the support frame on the side wall of the transformer.

6. A transformer, comprising a housing, and the housing includes a side wall of the transformer, Characterized in that, The outgoing line terminal (111) of the low-voltage side of the transformer is exposed from the side wall of the transformer, and the side wall of the transformer is provided with a circuit breaker mounting structure for fixedly assembling with the mounting structure on the circuit breaker to connect the contact on the circuit breaker with the outgoing line terminal (111) of the low-voltage side of the transformer when the circuit breaker is integrally mounted on the side wall of the transformer.

7. The transformer according to claim 6, Characterized in that, The circuit breaker mounting structure includes a mounting part located above the outgoing line terminal (111) of the low-voltage side of the transformer for hanging the hanging part of the circuit breaker and a support frame located below the outgoing line terminal (111) of the low-voltage side of the transformer.

8. The transformer according to claim 7, Characterized in that, The mounting part includes two groups of fixed mounting plates (2) symmetrically arranged in the horizontal direction, each group of fixed mounting plates (2) is arranged vertically in parallel, and a hanging pin for hanging the hanging part is connected between the two fixed mounting plates (2) in each group.

9. The transformer according to claim 7, Characterized in that, The support frame is a triangular support (3) arranged corresponding to the fixed mounting plate (2) in the vertical direction, and the triangular support (3) is a right-angled triangle support with the right-angled side facing upwards, and the upward-facing right-angled side is used for supporting the bottom of the circuit breaker.

10. A box-type substation, comprising a box body (11), a high-voltage chamber, a transformer and low-voltage side devices are arranged in the box body (11), and the low-voltage side devices include a circuit breaker, Characterized in that the transformer It is arranged beside the high-voltage chamber. The circuit breaker is assembled on the side wall of the transformer, and the circuit breaker is connected to the outgoing terminal (111) of the low-voltage side of the transformer through contacts. The circuit breaker is the circuit breaker described in any one of claims 1-5, and the transformer is the transformer described in any one of claims 6-9. Other low-voltage side components are arranged at the bottom of the box body (11) or on the side wall of the transformer.

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