Current transformer installation device for metal-enclosed switchgear

Abstract

The utility model discloses a current transformer installation device for a metal-enclosed switchgear, which comprises a middle partition plate, a welding plate is arranged above the middle partition plate, a current transformer installation plate is arranged below the middle partition plate, a current transformer is arranged below the current transformer installation plate, and the welding plate is connected with the current transformer installation plate. A first fastener is connected between the current transformer and the current transformer mounting plate, a second fastener is connected between the current transformer mounting plate and the middle partition plate, and a third fastener is connected between the middle partition plate and the welding plate. The device is reasonable in structural design, has the advantages of simple structure, convenience in maintenance and cost reduction, and can maintain the current transformer without power failure of the main bus when the current transformer in the metal-enclosed switchgear breaks down.

Description

TECHNICAL FIELD

[0001] The utility model relates to metal closed switchgear technology field especially relates to a current transformer installation device for metal closed switchgear. BACKGROUND

[0002] At present, in the power transmission system, the metal closed switchgear realizes the distribution and transmission of electric energy in the power system, and is an important part of the power system. However, the current size in the power generation, power transformation, power transmission, power distribution and power consumption line is very different. In order to facilitate measurement, protection and control, it is necessary to convert to a relatively uniform current. In addition, the voltage on the line is generally high, and direct measurement is very dangerous. The current transformer plays a role in current conversion and electrical isolation in the metal closed switchgear, so the reliable installation of the current transformer is very important. The previous installation method of the current transformer mainly adopts the direct connection of the current transformer and the cabinet middle partition plate. When the current transformer needs to be repaired and replaced due to failure, the main bus needs to be powered off, the power-off range is expanded, and additional economic losses are caused.

[0003] Therefore, it is very important to develop a detachable, convenient to install, easy to maintain and widely used complete metal closed switchgear current transformer installation device to improve the overall reliable operation of the power system equipment. UTILITY MODEL CONTENTS

[0004] The utility model aims at providing a current transformer installation device for metal closed switchgear to overcome the technical problems existing in the prior art.

[0005] In order to achieve the above technical purpose and achieve the above technical effect, the utility model provides the following technical scheme:

[0006] A current transformer installation device for metal closed switchgear, comprising a middle partition plate, a welding plate is arranged above the middle partition plate, a current transformer mounting plate is arranged below the middle partition plate, a current transformer is arranged below the current transformer mounting plate, a fastener one is connected between the current transformer and the current transformer mounting plate, a fastener two is connected between the current transformer mounting plate and the middle partition plate, and a fastener three is connected between the middle partition plate and the welding plate.

[0007] Preferably, in the current transformer installation device for metal closed switchgear, the current transformer mounting plate is arranged in a U-shaped structure, four assembly holes one are arranged on the bottom wall of the current transformer mounting plate, the fastener one penetrates through the assembly hole one, assembly holes two are arranged on the top of the current transformer mounting plate on both sides, and the fastener two penetrates through the assembly hole two.

[0008] Preferably, in the current transformer mounting device for the metal-enclosed switchgear, the welding plate is in the shape of a strip, and a plurality of nuts are welded to the top of the welding plate.

[0009] Preferably, in the current transformer mounting device for the metal-enclosed switchgear, the second fastener is a hexagonal head bolt, and the second fastener, the nut and the assembly hole are coaxial.

[0010] Preferably, in the current transformer mounting device for the metal-enclosed switchgear, the current transformer is provided with three and is equidistantly distributed.

[0011] Preferably, in the current transformer mounting device for the metal-enclosed switchgear, the outer surfaces of the partition plate, the welding plate and the current transformer mounting plate are coated with an insulating coating.

[0012] The current transformer mounting device for the metal-enclosed switchgear has the advantages that:

[0013] The current transformer mounting device for the metal-enclosed switchgear has the advantages that:

[0014] The current transformer mounting device for the metal-enclosed switchgear has the advantages that: BRIEF DESCRIPTION OF DRAWINGS

[0015] In order to more clearly illustrate the technical scheme of the present application, the following will briefly introduce the drawings needed in the specific implementation manner. Obviously, the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained from these drawings without creative labor.

[0016] Figure 1 It is a schematic diagram of the overall structure of the present application;

[0017] Figure 2 It is a schematic diagram of the disassembly structure of the present application;

[0018] Figure 3 It is a schematic diagram of the structure of the current transformer mounting plate in the present application;

[0019] Figure 4 It is the front view structural schematic drawing of the welding plate in the utility model.

[0020] In the drawing: 1, the bulkhead; 2, welding plate; 3, current transformer mounting plate; 4, current transformer; 5, fastener one; 6, fastener two; 7, fastener three; 21, nut; 31, assembly hole one; 32, assembly hole two. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0022] Please refer to Figures 1-4 As shown in the drawing, the embodiment is a current transformer mounting device for metal-enclosed switchgear, which comprises a bulkhead 1, the upper portion of the bulkhead 1 is provided with a welding plate 2, the lower portion of the bulkhead 1 is provided with a current transformer mounting plate 3, the lower portion of the current transformer mounting plate 3 is provided with a current transformer 4, the current transformer 4 is connected with the current transformer mounting plate 3 through a fastener one 5, the current transformer mounting plate 3 is connected with the bulkhead 1 through a fastener two 6, and the bulkhead 1 is connected with the welding plate 2 through a fastener three 7.

[0023] The current transformer mounting plate 3 is in a U-shaped structure, the bottom wall of the current transformer mounting plate 3 is provided with four assembly holes one 31, the fastener one 5 penetrates through the assembly hole one 31, and the top portion of the current transformer mounting plate 3 is provided with assembly holes two 32 on both sides.

[0024] The welding plate 2 adopts a strip-shaped plate, and a plurality of nuts 21 are welded to the top portion of the welding plate 2.

[0025] The fastener two 6 specifically adopts a hexagonal head bolt, and the fastener two 6, the nut 21 and the assembly hole two 32 are coaxial.

[0026] The current transformer 4 is provided with three current transformers and is distributed at equal distances.

[0027] The outer surfaces of the bulkhead 1, the welding plate 2 and the current transformer mounting plate 3 are all coated with an insulating coating.

[0028] The specific implementation manner of the utility model is:

[0029] In the embodiment, a plurality of nuts 21 are welded on the surface of the welding plate 2, which can cooperate with the fastener two 6 to play a role of connection and fixation, the current transformer mounting plate 3 adopts a U-shaped structure, has high structural strength, plays a role of connecting the current transformer 4 and the partition plate 1, and is convenient to mount and dismount, when the device is assembled, first, the current transformer 4 and the current transformer mounting plate 3 are fastened by using the fastener one 5, then the welding plate 2 and the partition plate 1 are fastened by using the fastener three 7, finally, the current transformer mounting plate 3 and the welding plate 1 are fastened by using the fastener two 6 when mounting, and thus the operation of mounting the current transformer can be completed once;

[0030] When dismounting, the fastener two 6 is dismounted, the current transformer mounting plate 3 can be dismounted together with the current transformer 4, and the special point is that during operation, the main bus is not required to be powered off, only the circuit breaker handcart is required to be tripped and moved to an isolation position, and after the cable room sealing plate is opened, the operation can be performed.

[0031] In the description of the specification, the description of the terms "one embodiment", "example", "specific example" and the like means that the specific features, structures, materials or characteristics described in combination with the embodiment or example are contained in at least one embodiment or example of the utility model. In the specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0032] The preferred embodiments of the utility model disclosed above are only used for helping to explain the utility model. The preferred embodiments do not describe all the details exhaustively, and also do not limit the utility model to only the specific embodiments described. Obviously, according to the content of the specification, many modifications and changes can be made. The specification selects and specifically describes these embodiments, in order to better explain the principle and practical application of the utility model, so that the person skilled in the art can well understand and utilize the utility model. The utility model is limited by the claims and the whole scope and equivalents thereof.

Claims

1. A current transformer mounting device for a metal-enclosed switchgear, comprising a partition plate (1), characterized in that: A welding plate (2) is provided above the partition plate (1), a current transformer mounting plate (3) is provided below the partition plate (1), a current transformer (4) is provided below the current transformer mounting plate (3), a fastener (5) connects the current transformer (4) and the current transformer mounting plate (3), a fastener (6) connects the current transformer mounting plate (3) and the partition plate (1), and a fastener (7) connects the partition plate (1) and the welding plate (2).

2. The current transformer mounting device for metal-enclosed switchgear according to claim 1, characterized in that: The current transformer mounting plate (3) is arranged in a Z-shape. The bottom wall of the current transformer mounting plate (3) is provided with four assembly holes (31). The fastener (5) passes through the assembly holes (31). The top two sides of the current transformer mounting plate (3) are provided with assembly holes (32). The fastener (6) passes through the assembly holes (32).

3. The current transformer mounting device for metal-enclosed switchgear according to claim 2, characterized in that: The welding plate (2) is a strip plate, and several nuts (21) are welded to the top of the welding plate (2).

4. The current transformer mounting device for metal-enclosed switchgear according to claim 3, characterized in that: The second fastener (6) is specifically a hexagonal head bolt, and the second fastener (6), nut (21) and assembly hole (32) are arranged on the same axis.

5. The current transformer mounting device for metal-enclosed switchgear according to claim 1, characterized in that: The current transformer (4) is provided in three parts and is distributed at equal intervals.

6. The current transformer mounting device for metal-enclosed switchgear according to claim 1, characterized in that: The outer surfaces of the partition plate (1), welding plate (2) and current transformer mounting plate (3) are all coated with an insulating coating.

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