CN216054262U

CN216054262U - Overvoltage protection shell for current transformer

Info

Publication number: CN216054262U
Application number: CN202122574630.8U
Authority: CN
Inventors: 王会; 靳波; 许凯钰; 张宇
Original assignee: Suzhou Liheng Testing Technology Co ltd
Current assignee: Suzhou Liheng Testing Technology Co ltd
Priority date: 2021-10-26
Filing date: 2021-10-26
Publication date: 2022-03-15
Anticipated expiration: 2031-10-26

Abstract

The utility model discloses an overvoltage protection shell for a current transformer, which comprises a first bearing shell and a second bearing shell, wherein current transformer bodies are arranged in the first bearing shell and the second bearing shell, and damping devices are arranged in the first bearing shell and the second bearing shell; damping device includes the locating plate, and two locating plates are located the top and the bottom of current transformer body, and two locating plates all are provided with the spring in back of the body four edges of one side mutually, and two equal fixedly connected with gaskets that the locating plate is relative, and the gasket is laminated with the current transformer body mutually. The utility model utilizes the matching use of the first bearing shell, the second bearing shell, the current transformer body and the two damping devices, and the damping devices comprise the positioning plate and the four springs, so that the positioning plate at the top and the positioning plate at the bottom of the current transformer body can perform damping protection under the action of the springs, thereby improving the practical performance of the current transformer.

Description

Overvoltage protection shell for current transformer

Technical Field

The utility model relates to the field of current transformers, in particular to an overvoltage protection shell for a current transformer.

Background

The current transformer is an instrument for converting a large primary side current into a small secondary side current to measure according to the electromagnetic induction principle, and consists of a closed iron core and a winding, wherein the primary side winding has few turns and is connected in series in a circuit of the current to be measured, so that all the current of the circuit always flows through the current transformer, the secondary side winding has more turns and is connected in series in a measuring instrument and a protection loop, and the secondary side loop of the current transformer is always closed when the current transformer works, so that the impedance of the series coil of the measuring instrument and the protection loop is very small, and the working state of the current transformer is close to a short circuit.

Current transformer's shell usually has insulating material to current transformer installs inside bearing the shell, the condition that can not the electric leakage, but receives the collision when bearing the shell, perhaps its operational environment be mobilizable place, will lead to current transformer to produce and rock, uses for a long time and will lead to current transformer to appear damaging, thereby reduces its practicality.

SUMMERY OF THE UTILITY MODEL

The present invention is directed to an overvoltage protection case for a current transformer, which solves the above problems of the related art.

In order to achieve the purpose, the utility model provides the following technical scheme: the overvoltage protection shell for the current transformer comprises a first bearing shell and a second bearing shell, wherein current transformer bodies are arranged inside the first bearing shell and the second bearing shell, and damping devices are arranged inside the first bearing shell and inside the second bearing shell;

damping device includes the locating plate, two the locating plate is located the top and the bottom of current transformer body, two four edges and corners that the locating plate carried on the back of the body one side mutually all are provided with the spring.

Preferably, two equal fixedly connected with gaskets that the locating plate is relative, two one side that the gasket is relative all laminates with the current transformer body mutually, two the locating plate respectively with the inner chamber of first bearing shell and the inner chamber sliding sleeve of second bearing shell cup joints.

Preferably, the first equal fixedly connected with first spliced pole in four edges of first bearing shell inner wall bottom, the second bears the equal fixedly connected with second spliced pole in four edges at shell inner wall top, the second bears four edges at shell top and all is provided with set screw.

Preferably, the outer wall of set screw and the second spliced pole slip interlude and cup joint, the bottom and the first spliced pole screw thread interlude of set screw outer wall cup joint, first spliced pole and second spliced pole cup joint with corresponding locating plate slip interlude respectively, first spliced pole and second spliced pole all cup joint with the spring slip.

Preferably, one side fixedly connected with card strip of shell bottom is born to the second, the draw-in groove has been seted up to one side at first shell top of bearing, the outer wall of card strip and the inner chamber slip joint of draw-in groove.

Preferably, the first bearing shell is fixedly connected with a bearing box on the back, the second bearing shell is fixedly connected with a sealing plate on the back, the top symmetrical threads of the sealing plate are inserted and sleeved with connecting bolts, and the bearing box is fixedly connected with a fixing plate on the back.

The utility model has the technical effects and advantages that:

(1) the current transformer body is matched with the first bearing shell, the second bearing shell, the current transformer body and the two damping devices, and each damping device comprises the positioning plate and the four springs, so that the positioning plate at the top and the positioning plate at the bottom of the current transformer body can perform damping protection under the action of the springs, and the practical performance of the current transformer body is improved;

(2) the first connecting column, the second connecting column and the fixing screws are matched for use, the first bearing shell and the second bearing shell can be fixed in position by the first connecting column, the second connecting column and the fixing screws, and the positioning plate and the spring can be limited in position by the first connecting column and the second connecting column, so that the stability of the bearing device during working is guaranteed.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention.

FIG. 2 is a schematic diagram of the front internal structure of the present invention.

FIG. 3 is a schematic diagram of a front internal structure of the present invention.

In the figure: 1. a first load-bearing housing; 2. a second load-bearing enclosure; 3. a current transformer body; 4. a set screw; 5. a damping device; 51. positioning a plate; 52. a spring; 53. a gasket; 54. a first connecting column; 55. a second connecting column; 6. clamping the strip; 7. a carrying box; 8. a sealing plate; 9. a connecting bolt; 10. and (7) fixing the plate.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The utility model provides an overvoltage protection shell for a current transformer as shown in figures 1-3, which comprises a first bearing shell 1 and a second bearing shell 2, wherein the first bearing shell 1 and the second bearing shell 2 are made of insulating materials, so that voltage protection can be carried out on a current transformer body 3, the current transformer body 3 is arranged inside the first bearing shell 1 and the second bearing shell 2, a clamping strip 6 is fixedly connected to one side of the bottom of the second bearing shell 2, a clamping groove is formed in one side of the top of the first bearing shell 1, the clamping strip 6 can improve the installation stability of the first bearing shell 1 and the second bearing shell 2, the outer wall of the clamping strip 6 is in sliding clamping connection with an inner cavity of the clamping groove, and damping devices 5 are arranged inside the first bearing shell 1 and inside the second bearing shell 2.

Damping device 5 includes locating plate 51, two locating plates 51 are located current transformer body 3's top and bottom, two locating plates 51 all are provided with spring 52 in the four edges of one side mutually away from the back, spring 52 and locating plate 51 can make current transformer body 3 first bear shell 1 and second and bear shell 2 and have certain elastic potential energy relatively, thereby when first bear shell 1 and second bear shell 2 and rock, current transformer body 3 has certain shock attenuation protection, two equal fixedly connected with gaskets 53 that locating plate 51 is relative, one side that two gaskets 53 are relative all laminates mutually with current transformer body 3, two locating plates 51 cup joint with the inner chamber of first bear shell 1 and the inner chamber sliding of second bearing shell 2 respectively.

The four corners at the bottom of the inner wall of the first bearing shell 1 are fixedly connected with first connecting columns 54, the four corners at the top of the inner wall of the second bearing shell 2 are fixedly connected with second connecting columns 55, the four corners at the top of the second bearing shell 2 are provided with fixing screws 4, the outer wall of each fixing screw 4 is slidably inserted and sleeved with the corresponding second connecting column 55, the bottom of the outer wall of each fixing screw 4 is threadedly inserted and sleeved with the corresponding first connecting column 54, the first connecting column 54 and the corresponding second connecting column 55 are respectively slidably inserted and sleeved with corresponding positioning plates 51, the first connecting column 54 and the second connecting column 55 are both slidably sleeved with a spring 52, the first connecting column 54, the second connecting column 55 and the fixing screw 4 can fix the positions of the first carrier housing 1 and the second carrier housing 2, and can also define the positions of the positioning plate 51 and the spring 52, thereby ensuring the stability of the positioning plate 51 and the spring 52.

The box 7 is born to the first back fixedly connected with who bears shell 1, and the second bears the back fixedly connected with closing plate 8 of shell 2, and connecting bolt 9 has been cup jointed in the top symmetry screw thread interlude of closing plate 8, and connecting bolt 9's one end has the pin screw thread interlude on the current transformer body 3 to cup joint to be connected external electric wire and connecting bolt 9, just can make the electric wire be connected with current transformer body 3, bear the back fixedly connected with fixed plate 10 of box 7.

The working principle of the utility model is as follows: when the current transformer body 3 is used, firstly, the outer walls of the first connecting columns 54 and the second connecting columns 55 are sleeved with the springs 52 in a sliding mode, then the outer walls of the four first connecting columns 54 and the outer walls of the four second connecting columns 55 are sleeved with the positioning plates 51 in a sliding mode, then the current transformer body 3 is installed inside the first bearing shell 1 and the second bearing shell 2, at the moment, the current transformer body 3 is located between the two positioning plates 51, and the first bearing shell 1 and the second bearing shell 2 are fixed in position by the aid of the fixing screws 4, so that the current transformer body 3 can have certain shock absorption performance relative to the first bearing shell 1 and the second bearing shell 2 under the action of the springs 52 and the positioning plates 51.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the utility model.

Claims

1. The overvoltage protection shell for the current transformer comprises a first bearing shell (1) and a second bearing shell (2), and is characterized in that a current transformer body (3) is arranged inside the first bearing shell (1) and the second bearing shell (2), and damping devices (5) are arranged inside the first bearing shell (1) and the second bearing shell (2);

damping device (5) are including locating plate (51), two locating plate (51) are located the top and the bottom of current transformer body (3), two four edges that locating plate (51) carried on the back one side mutually all are provided with spring (52).

2. The overvoltage protection shell for the current transformer according to claim 1, wherein two positioning plates (51) are fixedly connected with a gasket (53) oppositely, one sides of the two gaskets (53) opposite are attached to the current transformer body (3), and the two positioning plates (51) are respectively in sliding sleeve connection with the inner cavity of the first bearing shell (1) and the inner cavity of the second bearing shell (2).

3. The overvoltage protection shell for the current transformer according to claim 1, wherein a first connection column (54) is fixedly connected to each of four corners of the bottom of the inner wall of the first bearing shell (1), a second connection column (55) is fixedly connected to each of four corners of the top of the inner wall of the second bearing shell (2), and a fixing screw (4) is arranged at each of the four corners of the top of the second bearing shell (2).

4. The overvoltage protection shell for the current transformer according to claim 3, wherein the outer wall of the fixing screw (4) is slidably inserted and sleeved with the second connection column (55), the bottom of the outer wall of the fixing screw (4) is threadedly inserted and sleeved with the first connection column (54), the first connection column (54) and the second connection column (55) are slidably inserted and sleeved with the corresponding positioning plate (51), and the first connection column (54) and the second connection column (55) are both slidably sleeved with the spring (52).

5. The overvoltage protection shell for the current transformer according to claim 1, wherein a clamping strip (6) is fixedly connected to one side of the bottom of the second bearing shell (2), a clamping groove is formed in one side of the top of the first bearing shell (1), and an outer wall of the clamping strip (6) is in sliding clamping connection with an inner cavity of the clamping groove.

6. The overvoltage protection shell for the current transformer according to claim 1, wherein a bearing box (7) is fixedly connected to the back of the first bearing shell (1), a sealing plate (8) is fixedly connected to the back of the second bearing shell (2), a connecting bolt (9) is symmetrically threaded and sleeved on the top of the sealing plate (8), and a fixing plate (10) is fixedly connected to the back of the bearing box (7).