CN202183312U - A conductive contact spring contact finger connection device - Google Patents

Abstract

The technical solution of the utility model is to provide a conductive contact spring contact finger type connection device, which is characterized by comprising a conductor, a contact is sheathed on the end of the conductor, a circle groove is opened at the contact point between the inner wall of the contact and the conductor, the spring contact finger is embedded in the groove, one end of the guide rod is fixed on the contact, and the other end is inserted into the end of the conductor. The advantages of the utility model are: simple structure, few parts, strong current carrying capacity, and low cost (about 65% of the plum blossom contact plug-in connection).

Description

A conductive contact spring contact finger connection device

technical field

The utility model relates to a conductive contact spring contact finger connection device, which is used for the connection between contacts in a gas-insulated metal-enclosed switchgear (hereinafter referred to as GIS), and belongs to the technical field of high-voltage electrical appliances.

Background technique

The connection between the contacts in the gas-insulated metal-enclosed switchgear (GIS) currently adopts the plum blossom contact plug-in connection device. As shown in Figure 1, the connecting device generally consists of a contact base 1, a spring 2, a set of plum blossom contact fingers 3, a guide plate 4, a guide rod 5, a shield 6, and a conductor 7 (diameter 90mm). Among them, a group of plum blossom contact fingers 3 is composed of 16 to 32 contact fingers. Therefore, this connection method has a maximum of 32 contact points, and its flow capacity is limited to a certain extent (maximum current flow is 4000A). If you want to increase contact point, the diameter of the conductor 7 must be increased to make the entire structure larger, which is not suitable for the development of GIS to large capacity and small volume. Moreover, the connection method has many parts, which are composed of 8 different parts (there are two types of guide plate 4), and the assembly process is more and the cost is higher.

Contents of the invention

The purpose of the utility model is to provide a spring contact finger connection device to solve the problems of limited flow, complex structure, many parts and high cost of the plum blossom contact plug-in connection device.

In order to achieve the above purpose, the technical solution of the utility model is to provide a conductive contact spring contact finger connection device, which is characterized in that: it includes a conductor, a contact is placed on the end of the conductor, and the inner wall of the contact is in contact with the conductor. A groove is opened at the center, and the spring contact finger is embedded in the groove, and one end of the guide rod is fixed on the contact, and the other end is inserted into the end of the conductor.

The utility model is only made of 4 parts. Under the same conductor diameter (diameter 90mm), the rated current of the utility model can reach 4800A.

The utility model has the advantages of simple structure, few parts, strong current carrying capacity and low cost (about 65% of the plug-in connection of plum blossom contacts).

Description of drawings

Fig. 1 is a schematic diagram of a plum blossom contact plug-in connection device in the prior art;

Fig. 2 is a schematic diagram of the overall structure of a conductive contact spring contact finger connection device provided by the utility model.

Detailed ways

In order to make the utility model more obvious and understandable, a preferred embodiment is described in detail as follows in conjunction with the accompanying drawings.

As shown in FIG. 2 , a conductive contact spring contact finger connection device provided by the utility model is only composed of four parts: conductor 8 , spring contact finger 10 , contact 9 , and guide rod 11 . Process the conductor 8 and the contact 9 according to the inner diameter, outer diameter and compression amount of the spring contact finger 10. When assembling and connecting, put the spring contact finger 10 into the groove on the inner surface of the contact 9, then screw the guide rod 11 into the contact 9, then insert the conductor 8 into the contact 9 along the guide rod 11, and compress the spring contact finger 10 , The spring contact finger 10 produces elastic deformation force (contact pressure), so that the conductor 11, the spring contact finger 10 and the contact 9 are closely connected. When in use, the current passes through the conductor 8 to the spring contact finger 10, and then passes through the spring contact finger 10 to the contact 9, completing the function of passing current.

The structure provided by the utility model can be used for the conductor connection part of the busbar in the sulfur hexafluoride gas-insulated metal-enclosed switchgear (GIS). In the case of the same rated current, due to the removal of parts such as the shield cover 6 in Figure 1, the diameter of the contact is reduced by 32%, and the diameter of the bus barrel is reduced by 18.8%, which not only simplifies the mechanism and assembly process, but also reduces the production cost. cost.

Claims (1)

1. A conductive contact spring contact finger connection device, characterized in that: it includes a conductor (8), a contact (9) is placed on the end of the conductor (8), and the inner wall of the contact (9) is connected to the conductor ( 8) There is a groove at the contact point, the spring contact finger (10) is embedded in the groove, one end of the guide rod (11) is fixed on the contact (9), and the other end is inserted into the end of the conductor (8).

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