CN104361985B - A kind of voltage transformer and its pin configuration - Google Patents

Abstract

The present invention relates to a kind of voltage transformer and its pin configuration, voltage transformer includes transformer device body and pin configuration, pin configuration includes disc insulator and shielded-plate tube, the extraction wire that lower end is connected with transformer device body is equipped with shielded-plate tube, the center conductor of disc insulator is provided with switching conductive seat, the upper end of the extraction wire is fixed on the switching conductive seat by conductor connecting structure, and the upper end of the shielded-plate tube is fixed on the switching conductive seat by shielding pipe connecting structure.The present invention is solved in existing pin configuration the problem of shielded-plate tube and extraction wire, which share same attachment structure, causes extraction wire easily to be influenceed and come off by shielded-plate tube.

Description

A kind of voltage transformer and its lead wire structure

technical field

The invention relates to a voltage transformer and its lead wire structure.

Background technique

Existing voltage transformers such as "a voltage transformer" disclosed in Chinese patent CN201584284U, the voltage transformer includes a transformer body and a lead wire structure, the lead wire structure includes a pot insulator and a shielding tube, and the upper end of the shielding tube is provided with a terminal The cover, the end cover is provided with a bolt hole with the axis extending in the up and down direction, and the center conductor of the pot insulator is provided with a threaded hole corresponding to the bolt hole, and the bolt hole and the threaded hole are provided with holes to fix the shielding tube to the basin. The locking bolt on the type insulator, and the lead wire is also pressed between the locking bolt and the end cover. The problem with the existing lead wire structure is that due to the existence of the lead wires, the locking bolts will not be screwed too tightly. If the shielding tube shakes, the lead wires and the locking bolts will easily fall off, causing the voltage transformer It cannot be used normally; in addition, due to the need to tighten the locking bolts on the lower side of the end cover, the shielding tube must be made into a straight tube, which will cause the shielding tube to not let go of some parts of the transformer body, which will hinder the assembly of the voltage transformer. The length of the shielding tube is long, and it is not easy to screw the locking bolt into the threaded hole and at the same time make the locking bolt compress the lead wires tightly, resulting in low assembly efficiency of the voltage transformer .

Contents of the invention

The purpose of the present invention is to provide a lead wire structure to solve the problem in the existing lead wire structure that the lead wires are easily affected by the shield tube and fall off because the shield tube and the lead wire share the same connection structure; the purpose of the present invention is also to provide a A voltage transformer using the lead structure.

In order to solve the above problems, the technical scheme of the voltage transformer among the present invention is:

A voltage transformer, comprising a transformer body and a lead wire structure, the lead wire structure includes a basin-type insulator and a shielding tube, the shielding tube is pierced with a lead-out wire whose lower end is connected to the body of the transformer, and the center conductor of the basin-type insulator is provided with a There is a transfer conductive seat, the upper end of the lead-out wire is fixed on the transfer conductive seat through the wire connection structure, and the upper end of the shielding tube is fixed on the transfer conductive seat through the shielding tube connection structure.

The wire connection structure includes a crimping screw screwed on the transfer conductive seat, and the crimping screw is located in the shielding tube.

The upper end of the shielding tube is provided with an outward edge on the periphery of the wire connection structure, and the shielding tube connection structure includes a pressure plate fixed on the transfer conductive seat through a first bolt connection structure, and the pressure plate is sleeved on the On the shielding tube, the everted edge is sandwiched between the transfer conductive seat and the pressure plate.

The shielding pipe is a bent pipe structure with corners.

The transfer conductive seat is fixedly mounted on the central conductor through the second bolt connection structure, and the upper end surface of the transfer conductive seat is arranged adjacent to the lower end surface of the central conductor.

The technical scheme of lead structure among the present invention is:

A lead wire structure of a voltage transformer, comprising a basin-type insulator and a shielding tube, the central conductor of the basin-type insulator is provided with a transfer conductive seat, and the transfer conductive seat is provided with a wire connection structure for fixedly connecting the upper ends of the corresponding lead-out wires, The upper end of the shielding tube is fixed on the transfer conductive seat through the connecting structure of the shielding tube.

The wire connection structure includes a crimping screw screwed on the transfer conductive seat, and the crimping screw is located in the shielding tube.

The upper end of the shielding tube is provided with an outward edge on the periphery of the wire connection structure, and the shielding tube connection structure includes a pressure plate fixed on the transfer conductive seat through a first bolt connection structure, and the pressure plate is sleeved on the On the shielding tube, the everted edge is sandwiched between the transfer conductive seat and the pressure plate.

The shielding pipe is a bent pipe structure with corners.

The transfer conductive seat is fixedly mounted on the central conductor through the second bolt connection structure, and the upper end surface of the transfer conductive seat is arranged adjacent to the lower end surface of the central conductor.

The beneficial effects of the present invention are: the lead-out wires in the present invention are fixed on the transfer conductive seat through the wire connection structure, the upper end of the shielding tube is fixed on the transfer conductive seat through the shielding tube connection structure, and the lead-out wire and the shielding tube are used Different fixed connection structures are fixed, even if the shielding tube shakes, it will not affect the lead-out wires, so the normal use of the lead-out wires can be guaranteed.

The further lead-out wires are fixed on the transfer conductive seat through crimping screws. The connection process is simple and convenient. The crimping screws are located in the shielding tube to ensure the complete shielding of the lead-out wires, and there is no exposed area for the lead-out wires.

Further, the turned-out edge of the shielding tube is clamped and fixed between the transfer conductive seat and the pressure plate, and the fixing form of the shielding tube is simple and easy to realize.

Description of drawings

Fig. 1 is the structural representation of an embodiment of voltage transformer among the present invention;

Fig. 2 is an enlarged view of A in Fig. 1 .

detailed description

The embodiment of the voltage transformer is shown in Figures 1-2: it includes the body of the transformer and the lead wire structure. The lead wire structure includes a basin-type insulator 10 and a shielding tube 2. Conductor 3, the central conductor 1 of the pot insulator is fixed with a transfer conductive seat 4 through the second bolt connection structure, the upper end of the transfer conductive seat is placed in close contact with the lower end of the central conductor, and the second bolt connection structure includes an axis along the The second locking bolt 6 that extends up and down and is installed on the transfer conductive seat 4 and the central conductor. The upper end of the lead wire is fixed on the transfer conductive seat through a conductive connection structure. The conductive connection structure includes a crimping screw 7 screwed on the lower end of the transfer conductive seat, and the crimping screw is located in the shielding tube. The upper end of the shielding tube 2 is fixed on the transfer conductive seat through the connecting structure of the shielding tube. The upper end of the shielding tube is provided with an eversion edge 8 on the periphery of the wire connecting structure. The pressure plate 5 on the conductive seat, the pressure plate is sleeved on the shielding tube, and the valgus edge 8 is sandwiched between the transfer conductive seat 4 and the pressure plate 5. The first bolt connection structure includes the pressure plate and the transfer conductive seat. The first locking bolt 9. The shielding tube is a curved tube structure with corners, so that the shielding tube can get away from some parts of the transformer, which is more convenient for the installation of the shielding tube.

When assembling, first use the second locking bolt to fix the transfer conductive seat on the central conductor, then fix the upper end of the lead-out wire to the lower end of the transfer conductive seat through the crimping screw, and finally pass the pressure plate and the first lock Tighten the bolts to fix the upper end of the shielding tube on the transfer conductive seat. The whole assembly process is simple and convenient. There is no exposed point for the lead-out wires, which can effectively avoid insulation problems caused by exposure; the lead-out wires are fixed by crimping screws, and the concentricity and gap between the transfer conductive seat and the pressure plate are greatly improved, which is beneficial to The internal insulation of the product is optimized; the shielding tube can be made into a bent tube structure with corners to make room for the transformer body.

In other embodiments of the voltage transformer: when there is no need to make way for the body of the transformer, the shielding tube can also be a straight tube structure; the transfer conductive seat and the central conductor can also be integrally formed, and at this time the transfer conductive seat As a part of the central conductor; the shielding tube connection structure can also be a welding structure, at this time the shielding tube is welded and fixed on the bonding conductive seat; the wire connection structure can also be a welding structure, at this time the lead wire is welded and fixed on the transfer conductive seat .

Examples of the lead wire structure are shown in FIGS. 1-2 : the specific structure of the lead wire structure is the same as that of the above voltage transformer embodiments, and will not be described in detail here.

Claims (10)

1. A voltage transformer, comprising a transformer body and a lead wire structure, the lead wire structure includes a basin-type insulator and a shielding tube, and the shielding tube is pierced with a lead-out wire whose lower end is connected to the transformer body, and is characterized in that: basin-type The central conductor of the insulator is provided with a transfer conductive seat, the upper end of the lead-out wire is fixed on the transfer conductive seat through a wire connection structure, and the upper end of the shielding tube is fixed on the transfer conductive seat through a shielding tube connection structure. On the seat, the transfer conductive seat is arranged between the central conductor and the shielding tube. 2 . The voltage transformer according to claim 1 , wherein the wire connection structure includes a crimping screw screwed on the transfer conductive seat, and the crimping screw is located in the shielding tube. 3 . 3. The voltage transformer according to claim 1, characterized in that: the upper end of the shielding tube is provided with an outward edge on the periphery of the wire connection structure, and the shielding tube connection structure includes a first bolt connection structure. A pressing plate mounted on the transfer conductive seat, the pressing plate is sheathed on the shielding tube, and the everted edge is sandwiched between the transfer conductive seat and the pressing plate. 4. The voltage transformer according to claim 3, characterized in that: the shielding tube is a bent tube structure with corners. 5. The voltage transformer according to any one of claims 1 to 4, characterized in that: the transfer conductive seat is fixed on the central conductor through the second bolt connection structure, and the upper end surface of the transfer conductive seat and the lower end face of the central conductor is arranged in abutment. 6. A lead wire structure of a voltage transformer, including a basin-type insulator and a shielding tube, characterized in that: the central conductor of the basin-type insulator is provided with a transfer conductive seat, and the transfer conductive seat is provided with a corresponding upper end of the lead-out wire. The connected wire connection structure, the upper end of the shielding tube is fixed on the transfer conductive seat through the shielding tube connection structure, and the transfer conductive seat is arranged between the central conductor and the shielding tube. 7 . The wire lead structure according to claim 6 , wherein the wire connection structure comprises a crimping screw screwed on the transfer conductive seat, and the crimping screw is located in the shielding tube. 8 . 8. The lead wire structure according to claim 6, characterized in that: the upper end of the shielding tube is provided with an eversion edge on the periphery of the wire connection structure, and the shielding tube connection structure includes a first bolt connection structure. The pressing plate on the transfer conductive seat is sleeved on the shielding tube, and the everted edge is sandwiched between the transfer conductive seat and the pressing plate. 9. The lead wire structure according to claim 8, wherein the shielding tube is a bent tube structure with corners. 10. The lead wire structure according to any one of claims 6-9, characterized in that: the transfer conductive seat is fixed on the central conductor through a second bolt connection structure, and the upper end surface of the transfer conductive seat and the The lower end face of the central conductor is arranged adjacently.