CN220731324U - Current transformer with partition plate - Google Patents

Abstract

The utility model relates to the field of current transformers, in particular to a current transformer with a baffle plate, which comprises a transformer body, wherein a through hole is formed in the middle of the transformer body, the baffle plate is horizontally arranged in the middle of the through hole, the baffle plate and the transformer are integrally formed, at least one adjustable positioning device is respectively arranged at the upper end and the lower end of the surface of the transformer body, which is positioned at the through hole, and the adjustable positioning device is used for pressing and positioning busbar at the upper side and the lower side of the baffle plate. The partition board and the transformer body are integrally arranged, so that an air gap is completely eradicated, gap discharge does not exist, the insulation performance of the whole electrical equipment is greatly improved, the partial discharge level of the whole electrified system is greatly improved, the standard requirement is completely met, and the service life of the switch cabinet is prolonged.

Description

Current transformer with partition plate

Technical Field

The utility model belongs to the technical field of transformers, and particularly relates to a current transformer with a partition plate.

Background

At present, miniaturized high-voltage cabinets on the market, for example, a 550 centrally installed switchgear commonly used in the electrical industry, wherein an insulating medium is air insulation, the width of a cabinet body is only 550mm, the internal space is small, the structure is compact, and the insulating structure of the switch cabinet has the following defects: (1) The variant bodies are completely separated and insulated by the insulating partition plates, the upper parts of the traditional CT primary outlet busbar are separated by the partition plates, so that interphase creepage can be prevented, and the interphase insulation reliability can not be ensured. (2) Because the baffle on the primary outlet terminal busbar of the transformer is added later, an air gap exists between the baffle and the busbar, and interphase creepage arc generation is caused, so that the insulation service life of the whole switch equipment is directly influenced. (3) Because of the air gap between the partition board and the electrified body, the partial discharge level of the whole power transmission and distribution equipment is directly affected.

Disclosure of Invention

The utility model aims at the problems, discloses a current transformer with a baffle plate, and solves the problem that the current transformer in the prior art needs to be additionally provided with the baffle plate to realize interphase insulation.

The specific technical scheme is as follows:

the utility model provides a take current transformer of baffle, includes the transformer body, transformer body middle part is equipped with the opening, the level is equipped with the baffle in the opening, sets up for integrated into one piece between baffle and the transformer, the upper and lower both ends that transformer body surface is located the opening all are equipped with at least one adjustable positioner respectively, and adjustable positioner supports the busbar of both sides about to the baffle and presses the location.

Further, the upper end and/or the lower extreme level that are located the baffle in the opening are provided with the insulation board, the side and the opening inner wall sliding connection of insulation board for the insulation board can slide from top to bottom in the opening, and the both sides that the insulation board is close to baffle one end are equipped with the insulating blend stop that sets up along its length direction, insulating blend stop one side surface sets up with the laminating of baffle surface, thereby eliminates the clearance between insulation board and the baffle, realizes the insulating closure to female row both sides, and the insulation board supports the pressure location through adjustable positioner.

Furthermore, the sliding grooves are formed in the two sides of the insulating plate, sliding strips matched with the sliding grooves of the insulating plate are longitudinally arranged in the two sides of the through opening, and the insulating plate is matched with the sliding strips through the sliding grooves to realize sliding connection between the insulating plate and the transformer body.

Further, adjustable positioner includes screw rod seat, screw rod, insulating gasket, vertical threaded connection on the screw rod seat the screw rod, the screw rod is close to the one end of opening and is equipped with insulating gasket, and insulating gasket supports to one end under the effect of screw rod and presses.

Further, a soft insulating rubber is arranged on one side surface of the insulating barrier strip, so that the insulating barrier strip is propped against the partition plate through the insulating rubber.

Further, both ends of the partition plate protrude from the through hole.

Further, the length of the insulating plate is equal to that of the partition plate.

The beneficial effects of the utility model are as follows:

(1) Because the baffle and the mutual inductor body are integrally arranged, the air gap discharge is completely eradicated, the insulation performance of the whole electrical equipment is greatly improved, the partial discharge level of the whole electrified system is greatly improved, the standard requirement is completely met, and the service life of the switch cabinet is prolonged.

(2) The current transformer adopts the integrated structure of the partition plate and the transformer body, is maintenance-free, and is convenient to operate and install.

(3) According to the utility model, the insulating plate is movably arranged in the current transformer through hole, and the two sides of the insulating plate are covered on the two sides of the primary outlet terminal busbar through the insulating barrier strips, so that the interphase creepage phenomenon between the two busbars is effectively avoided, and the insulating performance of the electrical equipment is further improved.

Drawings

Fig. 1 is a schematic structural diagram of embodiment 1 in the present utility model.

Fig. 2 is a schematic structural diagram of embodiment 2 of the present utility model.

Fig. 3 is a front cross-sectional view of example 2 in the present utility model.

Fig. 4 is a schematic structural diagram of embodiment 3 in the present utility model.

The transformer comprises a transformer body 1, a through port 2, a sliding bar 21, a partition plate 3, an adjustable positioning device 4, a screw rod seat 41, a screw rod 42, an insulating gasket 43, an insulating plate 5, a sliding chute 51, an insulating barrier bar 52 and insulating rubber 53.

Detailed Description

In order to make the technical scheme of the utility model clearer and more definite, the utility model is further described below with reference to the accompanying drawings, and any scheme obtained by carrying out equivalent substitution and conventional reasoning on the technical characteristics of the technical scheme of the utility model falls into the protection scope of the utility model. The fixed connection mentioned in the utility model is a common connection mode in the mechanical field, and the fixed connection can be realized by welding, bolt-nut connection and screw connection.

In the description of the utility model, it should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate describing the utility model and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the utility model.

Example 1

As shown in FIG. 1, a current transformer with a baffle plate comprises a transformer body 1, wherein the transformer body is round or square, a rectangular through hole 2 is formed in the middle of the transformer body 1, a baffle plate 3 is horizontally arranged in the through hole 2, the baffle plate 3 and the transformer are integrally formed, the length of the baffle plate 3 is equal to the thickness of the through hole 2, the baffle plate 3 is positioned in the middle of the through hole 2, the baffle plate 3 separates the through hole 2 to form an upper cavity and a lower cavity and is respectively used for penetrating a busbar, two adjustable positioning devices 4 are respectively arranged at the upper end and the lower end of the through hole 2 on the front side and the rear side of the transformer body, and the adjustable positioning devices 4 are used for carrying out pressing positioning on the busbar at the upper side and the lower side of the baffle plate 3.

The adjustable positioning device 4 comprises a screw rod 42 seat 41, a screw rod 42 and an insulating gasket 43, wherein the screw rod 42 longitudinally penetrates through the screw rod 42 seat 41, the screw rod 42 is in threaded connection with the screw rod 42 seat 41, the insulating gasket 43 is arranged at one end, close to the through hole 2, of the screw rod 42, and the insulating gasket 43 is pressed on the busbar under the action of the screw rod 42 to perform positioning.

Example 2

As shown in fig. 2-3, in order to improve the insulation performance between two busbar, the difference between this embodiment and embodiment 1 is that, both ends of the partition plate 3 are protruded in the through hole 2, the upper end level of the partition plate 3 in the through hole 2 is provided with the insulating plate 5, the length of the insulating plate 5 is equal to the length of the partition plate 3, both sides of the insulating plate 5 are provided with the sliding grooves 51, and both sides of the through hole 2 are longitudinally provided with the sliding strips 21 matched with the sliding grooves 51 of the insulating plate 5, the insulating plate 5 is matched with the sliding strips 21 through the sliding grooves 51, so as to realize the sliding connection between the insulating plate 5 and the transformer body 1, the insulating plate 5 can slide up and down in the through hole 2, both sides of the insulating plate 5, which are close to one end of the partition plate 3, are provided with the insulating bars 52 along the length direction thereof, one side surface of the insulating plate 52 is provided with soft insulating rubber 53, and the insulating plate 5 is pressed and positioned by the adjustable positioning device 4 on the upper side of the through hole 2, so that the insulating plate 5 is pressed against the partition plate 3, thereby eliminating the gap between the insulating plate 5 and the partition plate 3, and realizing the insulation sealing of both sides of the busbar.

Example 3

As shown in fig. 4, in order to further improve the insulation performance between the two busbar, the difference between the embodiment and the embodiment 1 is that the upper and lower ends of the through hole 2 located on the partition plate 3 are respectively and horizontally provided with an insulation plate 5, the two insulation plates 5 are longitudinally and slidably connected with the through hole 2, and the two insulation plates 5 are respectively pressed and positioned by the adjustable positioning devices 4 on the upper and lower sides of the through hole 2, so that the two sides of the two insulation plates 5 are pressed against the upper and lower surfaces of the partition plate 3 by the insulation barrier strips 52 in cooperation with the insulation rubber 53, thereby realizing the sealing of the two sides of the two busbar, and further improving the insulation performance.

The present utility model is not limited to the above-mentioned embodiments, and any changes or substitutions that can be easily understood by those skilled in the art within the technical scope of the present utility model are intended to be included in the scope of the present utility model. Therefore, the protection scope of the present utility model should be subject to the protection scope of the claims.

Claims (7)

1. The utility model provides a take current transformer of baffle, includes transformer body (1), transformer body (1) middle part is equipped with opening (2), its characterized in that, opening (2) middle part level is equipped with baffle (3), is integrated into one piece setting between baffle (3) and the transformer, the upper and lower both ends that transformer body (1) surface is located opening (2) all are equipped with at least one adjustable positioner (4) respectively, and adjustable positioner (4) supports to press the location to the busbar of baffle (3) upper and lower both sides.

2. The current transformer with the partition plate according to claim 1, wherein an insulating plate (5) is horizontally arranged at the upper end and/or the lower end of the partition plate (3) in the through hole (2), the side edge of the insulating plate (5) is slidably connected with the inner wall of the through hole (2), the insulating plate (5) can slide up and down in the through hole (2), insulating barrier strips (52) arranged along the length direction of the insulating barrier strips (52) are arranged on two sides, close to one end of the partition plate (3), of the insulating barrier strips (52), one side surface of each insulating barrier strip is attached to the surface of the partition plate (3), so that gaps between the insulating plate (5) and the partition plate (3) are eliminated, and the insulating plate (5) is pressed and positioned through the adjustable positioning device (4).

3. The current transformer with the partition plate according to claim 2, wherein sliding grooves (51) are formed in two sides of the insulating plate (5), sliding strips (21) matched with the sliding grooves (51) of the insulating plate (5) are longitudinally arranged in two sides of the through hole (2), and the insulating plate (5) is matched with the sliding strips (21) through the sliding grooves (51) to realize sliding connection between the insulating plate (5) and the transformer body (1).

4. A current transformer with a partition plate according to claim 1 or 2, wherein the adjustable positioning device (4) comprises a screw (42) seat (41), a screw (42) and an insulating gasket (43), the screw (42) seat (41) is longitudinally connected with the screw (42) in a threaded manner, the insulating gasket (43) is arranged at one end of the screw (42) close to the through hole (2), and the insulating gasket (43) is pressed towards one end under the action of the screw (42).

5. A current transformer with a separator according to claim 2, characterized in that one side surface of the insulating barrier strip (52) is provided with a soft insulating rubber (53) so that the insulating barrier strip (52) is pressed against the separator (3) by the insulating rubber (53).

6. A current transformer with a spacer as claimed in claim 2, characterized in that both ends of the spacer (3) protrude from the through opening (2).

7. A current transformer with a spacer according to claim 6, characterized in that the length of the insulating plate (5) is equal to the length of the spacer (3).