CN218647727U

CN218647727U - Three-phase integrated current transformer

Info

Publication number: CN218647727U
Application number: CN202223285295.0U
Authority: CN
Inventors: 姜超; 姜树强; 陈双喜; 姜耀武; 刘建军
Original assignee: Xiangtan Hunan Electric Appliance Co ltd
Current assignee: Xiangtan Hunan Electric Appliance Co ltd
Priority date: 2022-12-08
Filing date: 2022-12-08
Publication date: 2023-03-17
Anticipated expiration: 2032-12-08

Abstract

The utility model discloses a three-phase integrated current transformer, which comprises a transformer shell and a mounting rack; the transformer shell: three mounting grooves are uniformly formed in the upper surface of the casing, current transformers are placed in the mounting grooves, cover plates are mounted on the upper surface of the casing of each transformer through symmetrically arranged bolts, compression rings matched with the mounting grooves are uniformly arranged on the bottom surface of each cover plate, and the compression rings are in contact with the corresponding current transformers; mounting the frame: dovetail strip that its relative medial surface set up corresponds the forked tail spout sliding connection who sets up with the side about the mutual-inductor shell respectively, and the trailing flank middle part of mounting bracket all is equipped with the fixed orifices, and the inside of mounting bracket all is equipped with coupling mechanism, and side middle part symmetry is equipped with the tooth alveolus with coupling mechanism complex about the mutual-inductor shell, this integrative current transformer of three-phase, convenient follow-up change alone arbitrary current transformer, the quick dismantlement and the installation of the mutual-inductor shell of being convenient for moreover, follow-up maintenance convenient and fast more.

Description

Three-phase integrated current transformer

Technical Field

The utility model relates to an integrative current transformer technical field of three-phase specifically is an integrative current transformer of three-phase.

Background

The current transformer converts a large current on a primary side into a small current on a secondary side according to an electromagnetic induction principle to measure, the current transformer consists of a closed iron core and a winding, the number of turns of the winding on the primary side is small, the winding is connected in a circuit needing the measured current in series, the three-phase current transformer is used by combining a plurality of current transformers, and the three-phase current transformer is installed in a mode of being integrated usually, when one of the current transformers of some three-phase integrated current transformers breaks down, the current transformers need to be replaced integrally, the use cost is high, most of the current transformers are installed by a plurality of bolts during installation, and subsequent disassembly and maintenance are troublesome.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to overcome current defect, provide an integrative current transformer of three-phase, convenient follow-up changes an arbitrary current transformer alone, saves subsequent use cost, the quick dismantlement and the installation of the mutual-inductor shell of being convenient for moreover, follow-up maintenance convenient and fast more can effectively solve the problem in the background art.

In order to achieve the above object, the utility model provides a following technical scheme: a three-phase integrated current transformer comprises a transformer shell and a mounting rack;

the transformer shell: three mounting grooves are uniformly formed in the upper surface of the transformer shell, current transformers are placed in the mounting grooves, cover plates are mounted on the upper surface of the transformer shell through symmetrically arranged bolts, compression rings matched with the mounting grooves are uniformly arranged on the bottom surfaces of the cover plates, and the compression rings are in contact with the corresponding current transformers;

mounting frame: dovetail strip that its relative medial surface set up corresponds the forked tail spout sliding connection who sets up with the side about the mutual-inductor shell respectively, and the trailing flank middle part of mounting bracket all is equipped with the fixed orifices, and the inside of mounting bracket all is equipped with coupling mechanism, and side middle part symmetry is equipped with the tooth alveolus with coupling mechanism complex about the mutual-inductor shell, and convenient follow-up changes an arbitrary current transformer alone, saves subsequent use cost, the quick dismantlement and the installation of the mutual-inductor shell of being convenient for moreover, and follow-up maintenance is convenient and fast more.

Furthermore, the rear end of the upper surface of the cover plate is uniformly provided with a binding post matched with a wiring end of the current transformer, so that wiring is facilitated.

Further, coupling mechanism includes shell fragment, fixture block and T type pole, shell fragment front and back symmetry sets up in the square groove of the relative medial surface of two mounting brackets, be located two shell fragments of same square inslot portion all with fixture block fixed connection, fixture block and the tooth alveolus cooperation joint of homonymy, the lateral surface middle part of fixture block all is equipped with T type pole, T type pole corresponds the step hole sliding connection who sets up with the mounting bracket middle part, makes things convenient for the dismantlement and the installation of mutual-inductor shell.

Further, the step hole outside that the mounting bracket middle part corresponds the setting all rotates and is connected with spacing dish, the back of the body lateral surface center department that leaves of two T type poles all be equipped with spacing dish complex spacing, the relative medial surface of two spacing dishes all be equipped with spacing complex bar keep away the position groove, play the effect of keeping away to the removal of T type pole.

Furthermore, the annular groove of the outer side surface of the limiting disc is internally and fixedly sleeved with a torsion spring, and the outer end of the torsion spring is fixedly connected with the inner wall of the step hole in the middle of the mounting frame at the same side, so that the limiting disc can be automatically reset conveniently.

Furthermore, the device also comprises a driving frame, and the rear end head of the driving frame is respectively and fixedly connected with the outer side surfaces of the limiting discs on the same side, so that the limiting discs can be driven to rotate conveniently.

Furthermore, the inner wall of the step hole in the middle of the mounting rack is provided with a limiting opening matched with the driving rack, so that the rotation of the driving rack is limited.

Compared with the prior art, the beneficial effects of the utility model are that: this integrative current transformer of three-phase has following benefit:

1. place current transformer in the mounting groove that the mutual-inductor shell upper surface corresponds, then use the bolt to install the apron to the upper surface of mutual-inductor shell, make clamping ring and current transformer contact and fix current transformer, make the terminal intercommunication that the terminal that the apron rear end corresponds with current transformer, convenient follow-up changes alone arbitrary current transformer, saves subsequent use cost.

2. When installing mutual-inductor shell, the fixed orifices that uses the bolt to pass through the mounting bracket trailing flank is fixed to suitable position to mutual-inductor shell, when needs are dismantled mutual-inductor shell and are maintained, rotate two spacing dishes through the drive yoke, elastic deformation takes place simultaneously for the torsional spring, after the drive yoke rotates to the maximum angle, the spacing groove is kept away to the bar of spacing dish inner wall and the spacing position correspondence of T type pole lateral surface, at this moment, outwards stimulate mutual-inductor shell, mounting bracket and forked tail spout take place relative slip, the inside fixture block of mounting bracket and the cooperation of tooth socket, make the shell fragment take place elastic deformation, the fixture block moves to the outside, the spacing groove can play the effect of keeping away to spacing to the bar is kept away to the bar, make things convenient for quick dismantlement of mutual-inductor shell, it is more convenient to follow-up maintenance.

3. Maintain the back and slide into the mutual-inductor shell between two mounting brackets, after the mutual-inductor shell moves to suitable position, under the spring action of shell fragment, the inside tooth joint that corresponds of fixture block and tooth alveolus, loosen the drive frame this moment, the torsional spring drives spacing dish and resets, make the bar keep away the groove and spacing dislocation, the relative medial surface contact of lateral surface and spacing dish of spacing strip this moment, can restrict the removal of fixture block through T type pole, and then fix mutual-inductor shell, make things convenient for the quick installation of mutual-inductor shell fixed.

Drawings

FIG. 1 is a schematic view of the present invention;

FIG. 2 is a schematic view of the internal cross-sectional structure of the present invention;

FIG. 3 is an enlarged schematic view of the structure at the position A of the present invention;

fig. 4 is a left side schematic structure diagram of the present invention.

In the figure: 1 mutual-inductor shell, 2 coupling mechanism, 21 shell fragment, 22 fixture blocks, 23T type pole, the spacing strip of 231, 3 mounting grooves, 4 current transformer, 5 apron, 6 terminals, 7 clamping rings, 8 forked tail spout, 9 mounting brackets, 10 fixed orificess, 11 tooth sockets, 12 spacing dish, 13 torsional springs, 14 bar keep away the groove, 15 drive racks, 16 spacing opening.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-4, the present embodiment provides a technical solution: a three-phase integrated current transformer comprises a transformer shell 1 and a mounting frame 9;

the transformer shell 1: the three mounting grooves 3 are uniformly formed in the upper surface of the transformer shell, the current transformers 4 are placed inside the mounting grooves 3, the cover plates 5 are mounted on the upper surface of the transformer shell 1 through symmetrically arranged bolts, the press rings 7 matched with the mounting grooves 3 are uniformly arranged on the bottom surface of the cover plates 5, the press rings 7 are in contact with the corresponding current transformers 4, the terminals 6 matched with the terminals of the current transformers 4 are uniformly arranged at the rear ends of the upper surface of the cover plates 5, the current transformers 4 are placed in the mounting grooves 3 corresponding to the upper surface of the transformer shell 1, then the cover plates 5 are mounted on the upper surface of the transformer shell 1 through the bolts, the press rings 7 are in contact with the current transformers 4 to fix the current transformers 4, any one of the current transformers 4 can be conveniently and independently replaced in the follow-up process, the follow-up use cost is saved, the terminals 6 at the rear ends of the cover plates 5 are communicated with the terminals corresponding to the current transformers 4, the terminals 6 are electrically connected with the input ends of an external current meter through the corresponding current transformers 4 respectively, and the three-phase cables can be respectively penetrated into the corresponding current transformers 4, and the currents of the three-phase cables can be monitored by the current transformers 4;

mounting frame 9: dovetail strips arranged on the opposite inner side surfaces of the transformer shell are respectively in sliding connection with dovetail chutes 8 correspondingly arranged on the left and right side surfaces of the transformer shell 1, fixing holes 10 are formed in the middle of the rear side surface of each mounting frame 9, connecting mechanisms 2 are arranged in the mounting frames 9, tooth sockets 11 matched with the connecting mechanisms 2 are symmetrically arranged in the middle of the left and right side surfaces of the transformer shell 1, each connecting mechanism 2 comprises an elastic sheet 21, a fixture block 22 and a T-shaped rod 23, the elastic sheets 21 are symmetrically arranged in square grooves on the opposite inner side surfaces of the two mounting frames 9 in the front and back direction, the two elastic sheets 21 positioned in the same square groove are respectively and fixedly connected with the fixture block 22, the fixture block 22 is in matched clamping connection with the tooth sockets 11 on the same side, the T-shaped rods 23 are arranged in the middle of the outer side surfaces of the fixture block 22, the T-shaped rods 23 are in sliding connection with step holes correspondingly arranged in the middle of the mounting frames 9, and limiting discs 12 are rotatably connected on the outer sides of the step holes correspondingly arranged in the middle of the mounting frames 9, the centers of the outer side surfaces of the two T-shaped rods 23 which are opposite to each other are respectively provided with a limiting strip 231 matched with the limiting disc 12, the opposite inner side surfaces of the two limiting discs 12 are respectively provided with a strip-shaped avoiding groove 14 matched with the limiting strip 231, the annular grooves of the outer side surfaces of the limiting discs 12 are respectively and fixedly sleeved with a torsion spring 13, the outer end head of each torsion spring 13 is fixedly connected with the inner wall of the step hole in the middle of the mounting frame 9 at the same side, the transformer shell 1 further comprises a driving frame 15, the rear end head of each driving frame 15 is respectively and fixedly connected with the outer side surface of the limiting disc 12 at the same side, the inner wall of the step hole in the middle of the mounting frame 9 is respectively provided with a limiting notch 16 matched with the driving frame 15, when the transformer shell 1 is mounted, a bolt is used for fixing the transformer shell 1 to a proper position through the fixing hole 10 in the rear side surface of the mounting frame 9, when the transformer shell 1 needs to be dismounted and maintained, the two limiting discs 12 are rotated through the driving frame 15, meanwhile, the torsion spring 13 is elastically deformed, the limiting opening 16 can play a limiting role in the maximum rotation angle of the driving frame 15, when the driving frame 15 rotates to the maximum angle, the strip-shaped avoiding groove 14 in the inner wall of the limiting disc 12 corresponds to the limiting strip 231 on the outer side surface of the T-shaped rod 23, the mounting frame 9 slides along the dovetail chute 8, the fixture block 22 inside the mounting frame 9 is matched with the tooth groove 11, the elastic sheet 21 is elastically deformed, the fixture block 22 moves towards the outer side, the strip-shaped avoiding groove 14 can play a avoiding role in the limiting strip 231, at the moment, the mounting frame 9 can freely slide along the dovetail chute 8 correspondingly arranged on the left side surface and the right side surface of the mutual inductor shell 1, the mutual inductor shell 1 is conveniently disassembled, after maintenance, the mutual inductor shell 1 slides between the two mounting frames 9, when the mutual inductor shell 1 moves to a proper position, under the elastic action of the elastic sheet 21, the fixture block 22 is in clamping connection with the tooth groove 11, at the moment, the driving frame 15 is loosened, the torsion spring 13 drives the limiting disc 12 to reset, the strip-shaped avoiding groove 14 and the limiting strip-shaped avoiding groove 231 and the outer side surface of the limiting disc is in dislocation with the shell of the T-shaped rod 231, the shell, the mutual inductor shell is more convenient to disassemble, the mutual inductor shell 22, and the mutual inductor shell is convenient to disassemble.

The utility model provides a pair of integrative current transformer of three-phase's theory of operation as follows: placing a current transformer 4 in a mounting groove 3 corresponding to the upper surface of a transformer shell 1, then installing a cover plate 5 on the upper surface of the transformer shell 1 by using bolts, enabling a press ring 7 to be in contact with the current transformer 4 to fix the current transformer 4, enabling a terminal 6 at the rear end of the cover plate 5 to be communicated with a terminal corresponding to the current transformer 4, electrically connecting the terminal 6 with an input end of an external ammeter by using a guide, respectively penetrating a three-phase cable into the corresponding current transformer 4, enabling the current transformer 4 to monitor the current of the three-phase cable, when installing the transformer shell 1, fixing the transformer shell 1 to a proper position by using bolts through a fixing hole 10 at the rear side of the mounting frame 9, when the transformer shell 1 needs to be disassembled and maintained, rotating two limiting discs 12 by using a driving frame 15, simultaneously elastically deforming a torsion spring 13, enabling a limiting opening 16 to limit the maximum rotation angle of the driving frame 15, when the driving frame 15 rotates to the maximum angle, enabling a dovetail groove 14 at the dovetail groove 14 on the inner wall of the limiting disc 12 to correspond to a limiting bar 231 at the outer side of a T-shaped rod 23, enabling the mounting frame 9 to slide along the tooth groove 9, enabling the mounting frame to slide along the mounting frame 9, enabling the mounting frame to slide along the tooth groove 21, enabling the mounting frame to be conveniently to slide along the tooth, enabling the mounting frame 1 to slide along the tooth, enabling the mounting rack to slide along the mounting rack 1 to slide along the tooth, enabling the mounting rack 1 to be matched with the mounting rack 21, enabling the mounting rack to be conveniently to slide along the rack 21, enabling the rack to be matched with the rack 21, when the rack 1, the rack 21, enabling the rack to be conveniently to be in the rack 21, enabling the rack to be in the rack to be matched with the rack 21, when the rack 1, the rack 21, loosening the driving frame 15 this moment, torsional spring 13 drives spacing dish 12 and resets, makes the bar keep away groove 14 and spacing 231 dislocation, and the lateral surface of spacing 231 contacts with the relative medial surface of spacing dish 12 this moment, can restrict the removal of fixture block 22 through T type pole 23, and then fixes mutual-inductor shell 1, and the dismantlement of mutual-inductor shell 1 of being convenient for is maintained, and it is more convenient to use.

The above only is the embodiment of the present invention, not limiting the scope of the present invention, all the equivalent structures or equivalent processes of the present invention are used in the specification and the attached drawings, or directly or indirectly applied to other related technical fields, and the same principle is included in the protection scope of the present invention.

Claims

1. The utility model provides an integrative current transformer of three-phase which characterized in that: comprises a mutual inductor shell (1) and a mounting rack (9);

transformer housing (1): three mounting grooves (3) are uniformly formed in the upper surface of the transformer shell, current transformers (4) are placed in the mounting grooves (3), cover plates (5) are mounted on the upper surface of the transformer shell (1) through symmetrically arranged bolts, compression rings (7) matched with the mounting grooves (3) are uniformly arranged on the bottom surfaces of the cover plates (5), and the compression rings (7) are in contact with the corresponding current transformers (4);

mounting frame (9): dovetail strips arranged on the opposite inner side faces of the sliding rack are respectively in sliding connection with dovetail chutes (8) arranged on the left side face and the right side face of the transformer shell (1), fixing holes (10) are formed in the middle of the rear side face of the mounting rack (9), connecting mechanisms (2) are arranged inside the mounting rack (9), and tooth sockets (11) matched with the connecting mechanisms (2) are symmetrically arranged on the middle of the left side face and the right side face of the transformer shell (1).

2. A three-phase integrated current transformer according to claim 1, characterized in that: and the rear end of the upper surface of the cover plate (5) is uniformly provided with a binding post (6) matched with the wiring end of the current transformer (4).

3. A three-phase integrated current transformer according to claim 1, characterized in that: coupling mechanism (2) include shell fragment (21), fixture block (22) and T type pole (23), shell fragment (21) front and back symmetry sets up in the square groove of two mounting bracket (9) relative medial surfaces, be located two shell fragments (21) of same square inslot portion all with fixture block (22) fixed connection, fixture block (22) and tooth socket (11) cooperation joint of homonymy, the lateral surface middle part of fixture block (22) all is equipped with T type pole (23), T type pole (23) correspond the step hole sliding connection that sets up with mounting bracket (9) middle part.

4. A three-phase integrated current transformer according to claim 3, characterized in that: the mounting bracket is characterized in that the outer side of the step hole correspondingly arranged in the middle of the mounting bracket (9) is rotatably connected with a limiting disc (12), the back outer side surfaces of the two T-shaped rods (23) are provided with limiting strips (231) matched with the limiting disc (12), and the opposite inner side surfaces of the two limiting discs (12) are provided with strip-shaped avoiding grooves (14) matched with the limiting strips (231).

5. A three-phase integrated current transformer according to claim 4, characterized in that: the limiting disc is characterized in that a torsion spring (13) is fixedly sleeved in the annular groove in the outer side face of the limiting disc (12), and the outer end of the torsion spring (13) is fixedly connected with the inner wall of the step hole in the middle of the mounting frame (9) at the same side.

6. A three-phase integrated current transformer according to claim 4, characterized in that: the device is characterized by further comprising a driving frame (15), wherein the rear end head of the driving frame (15) is fixedly connected with the outer side face of the limiting disc (12) on the same side.

7. The three-phase integrated current transformer according to claim 6, wherein: and the inner walls of the step holes in the middle of the mounting rack (9) are provided with limiting notches (16) matched with the driving rack (15).