CN217086303U

CN217086303U - Base for fixing secondary coil of current transformer

Info

Publication number: CN217086303U
Application number: CN202220583798.7U
Authority: CN
Inventors: 刘建中
Original assignee: Qingdao Power Transformer Co ltd
Current assignee: Qingdao Power Transformer Co ltd
Priority date: 2022-03-17
Filing date: 2022-03-17
Publication date: 2022-07-29
Anticipated expiration: 2032-03-17

Abstract

The utility model discloses a base for fixing a secondary coil of a current transformer, which comprises a base, wherein two groups of wire poles are detachably arranged in a shell, a first coil and a second coil are respectively arranged on the two groups of wire poles, the first coil arranged on one group of wire poles is used for connecting an input large current, the second coil arranged on the other group of wire poles is used for connecting a lead for outputting a small current, a pull ring is pulled upwards during wiring, the pull ring is moved to drive a pull rod to move, the pull rod is moved to drive a sliding plate to move, the sliding plate is moved to extrude two groups of compression springs, meanwhile, the sliding plate is moved to drive the clamping plate to move upwards to separate from the clamping seat, the coil end part is placed above the clamping seat, then the pull ring is loosened, the clamping plate is pushed downwards by the reaction force generated by the contraction of the compression springs, the clamping plate is moved to drive the clamping groove at the bottom of the clamping plate to be clamped with the surface of the coil end part, and then fix the coil, so can connect the line or dismantle fast when the device is wired, easy to use.

Description

Base for fixing secondary coil of current transformer

Technical Field

The utility model relates to a current transformer technical field specifically is a fixed base of using of current transformer secondary coil.

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 a 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, the working state of the current transformer is close to short circuit, the current transformer converts the large primary side current into the small secondary side current to measure, and the secondary side cannot be opened.

The existing current transformer generally utilizes two groups of bolts to limit a wire to be connected on the current transformer during wiring, then the bolts are screwed down, auxiliary tools are required to be used, and the operation is inconvenient, so that a base for fixing a secondary coil of the current transformer is required to be provided.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a base is used in current transformer secondary coil is fixed possesses and can be to quick wiring or dismantlement when current transformer connects, convenient to use to solve the problem that proposes among the above-mentioned background.

In order to achieve the above object, the utility model provides a following technical scheme:

a base for fixing a secondary coil of a current transformer comprises a base, wherein a shell is fixedly arranged at the upper end of the base, a shell cover is fixed at the upper end of the shell through bolts, two groups of wire posts are detachably arranged in the shell, a first coil and a second coil are respectively arranged on the two groups of wire posts, two groups of through grooves are symmetrically formed in one side of the shell, one ends of the wire posts penetrate through the through grooves and are located in the shell, flanges are arranged at the other ends of the wire posts, the flanges are fixedly connected with the side wall of the shell through bolts, wire holders are respectively arranged at two ends of the shell, one group of the wire holders are communicated with two ends of the first coil, and the other group of the wire holders are communicated with two ends of the second coil;

the wire holder includes fixed mounting in housing face's box body, the inside slidable mounting of box body has the slide, two sets of cardboards are installed to the bottom symmetry of slide, two sets of cassettes with cardboard looks adaptation are installed to the interior bottom symmetry of box body, the draw-in groove with coil looks adaptation is seted up to the bottom of cardboard, the both ends of coil all run through the casing and the box body is located the cassette, the inner wall of draw-in groove and the surface joint of coil.

Preferably, the top of slide fixed mounting has the pull rod, the top of pull rod runs through the box body and extends to fixedly connected with pull ring.

Preferably, the slide is located the equal fixedly connected with gag lever post in both sides of pull rod, the upper end of gag lever post runs through the top that the box body is located the box body, and the gag lever post is equipped with compression spring on being located the inside one end outer wall of box body.

Preferably, one side of the box body is provided with a mounting opening, and the box cover is mounted inside the mounting opening through bolt bolting.

Preferably, a partition board is fixedly installed on one side of the inner wall of the shell and located between the two groups of wire posts, and the partition board is made of insulating materials.

Preferably, the both ends of base all are connected with the installation piece, installation piece and base integrated into one piece set up, and the symmetry has seted up two sets of mounting holes on the installation piece.

Preferably, the upper end of the base is provided with ventilation meshes, and the ventilation meshes are located below the two groups of wire columns.

Compared with the prior art, the beneficial effects of the utility model are that:

the utility model discloses a can dismantle two sets of terminal columns at the inside of casing, be provided with first coil and second coil respectively on two sets of terminal columns, through being used for inserting the heavy current of input with the first coil that sets up on one set of terminal column, the second coil that sets up on another set of terminal column is used for connecting the wire of output undercurrent, upwards stimulate the pull ring during wiring, the removal of pull ring drives the pull rod to move, the removal of pull rod drives the slide and moves, the removal of slide can extrude two sets of compression spring, simultaneously the removal of slide drives the cardboard and upwards moves and breaks away from the cassette, the user places the coil tip above the cassette at this moment, then loosen the pull ring, the reaction force that compression spring shrink produced at this moment can push the cardboard downwards, the removal of cardboard can drive the draw-in groove of its bottom and the surface joint of coil tip, and then fix the coil, therefore can connect or dismantle fast during device wiring, is convenient to use.

Drawings

Fig. 1 is a schematic view of an axial measurement structure of the present invention;

FIG. 2 is a schematic sectional view of the present invention;

fig. 3 is a schematic cross-sectional structure diagram of the wire holder of the present invention.

In the figure: 1. a base; 2. a housing; 3. a shell cover; 4. a through groove; 5. a wire post; 6. a partition plate; 7. a wire holder; 8. ventilating mesh holes; 9. mounting blocks; 10. mounting holes; 71. a box body; 72. a pull rod; 73. a pull ring; 74. a slide plate; 75. clamping a plate; 76. a card slot; 77. a card holder; 78. a limiting rod; 79. a compression spring; 710. and (7) a box cover.

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. 1-3, the present invention provides a technical solution:

a base for fixing a secondary coil of a current transformer comprises a base, wherein a shell 2 is fixedly installed at the upper end of the base 1, a shell cover 3 is fixed at the upper end of the shell 2 through bolts, the shell cover 3 is convenient to detach through the bolts, two groups of wire posts 5 are detachably installed in the shell 2, a first coil and a second coil are respectively arranged on the two groups of wire posts 5, a partition plate 6 is fixedly installed on one side of the inner wall of the shell 2, the partition plate 6 is located between the two groups of wire posts 5, and the partition plate 6 is made of insulating materials and is convenient to shield interference between signals of the first coil and signals of the second coil through the partition plate 6;

two groups of through grooves 4 are symmetrically formed in one side of the shell 2, one end of the wire post 5 penetrates through the through grooves 4 and is located inside the shell 2, a turned-over edge is arranged at the other end of the wire post 5 and is fixedly bolted to the side wall of the shell 2 through a bolt, wire holders 7 are mounted at two ends of the shell 2, one group of the wire holders 7 is communicated with two ends of the first coil, and the other group of the wire holders 7 is communicated with two ends of the second coil;

the wire holder 7 comprises a box body 71 fixedly arranged on the surface of the shell 2, a sliding plate 74 is arranged in the box body 71 in a sliding manner, two groups of clamping plates 75 are symmetrically arranged at the bottom of the sliding plate 74, two groups of clamping seats 77 matched with the clamping plates 75 are symmetrically arranged at the inner bottom of the box body 71, clamping grooves 76 matched with the coils are formed in the bottoms of the clamping plates 75, two ends of the coils penetrate through the shell 2 and the box body 71 and are positioned on the clamping seats 77, the inner walls of the clamping grooves 76 are clamped with the surface of the coils, and the coils are conveniently fixed through the matching of the clamping grooves 76 and the clamping seats 77;

a pull rod 72 is fixedly installed at the top of the sliding plate 74, the top of the pull rod 72 penetrates through the box body 71 and extends to the fixedly connected pull ring 73, limiting rods 78 are fixedly connected to two sides of the sliding plate 74, which are located on the pull rod 72, the upper end of each limiting rod 78 penetrates through the box body 71 and is located above the box body 71, a compression spring 79 is sleeved on the outer wall of one end, which is located inside the box body 71, of each limiting rod 78, a mounting opening is formed in one side of the box body 71, a box cover 710 is installed inside the mounting opening in a bolted mode through bolts, the box cover 710 is convenient to detach or install through bolts, and the inside of the box body 71 is convenient to operate through the box cover 710;

ventilation mesh 8 has been seted up to base 1's upper end, and ventilation mesh 8 is located the below of two sets of stylets 5, and base 1's both ends all are connected with installation piece 9, and installation piece 9 sets up with base 1 integrated into one piece, and the symmetry has seted up two sets of mounting holes 10 on the installation piece 9, is convenient for install the device through mounting hole 10.

When the utility model is used, two groups of wire columns 5 are detachably arranged in the shell 2, a first coil and a second coil are respectively arranged on the two groups of wire columns 5, the first coil arranged on one group of wire columns 5 is used for connecting an input large current, the second coil arranged on the other group of wire columns 5 is used for connecting a lead for outputting a small current, a pull ring 73 is pulled upwards during wiring, the pull ring 73 is moved to drive a pull rod 72 to move, the pull rod 72 is moved to drive a sliding plate 74 to move, the sliding plate 74 is moved to extrude two groups of compression springs 79, meanwhile, the sliding plate 74 is moved to drive a clamping plate 75 to move upwards to separate from the clamping seat 77, at the moment, a coil end part is placed above the clamping seat 77 by a user, then the pull ring 73 is loosened, the clamping plate 75 can be pushed downwards by a reaction force generated by the contraction of the compression springs 79, the clamping plate 75 can be moved to drive a clamping groove 76 at the bottom of the clamping plate 75 to be clamped with the surface of the coil end part, and then fix the coil, so can connect the line or dismantle fast when the device is wired, easy to use.

The same reference numbers in different drawings identify the same or similar elements; it should be further understood that terms such as "first," "second," "third," "upper," "lower," "front," "rear," "inner," "outer," "end," "portion," "section," "width," "thickness," "zone," and the like, may be used solely for convenience in reference to the figures and to aid in describing the invention, and are not intended to limit the invention.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a fixed base of using of current transformer secondary, includes base (1), its characterized in that: the wire connecting structure comprises a base (1), a shell (2) is fixedly mounted at the upper end of the base (1), a shell cover (3) is fixed at the upper end of the shell (2) through bolts, two groups of wire posts (5) are detachably mounted in the shell (2), a first coil and a second coil are respectively arranged on the two groups of wire posts (5), two groups of through grooves (4) are symmetrically formed in one side of the shell (2), one ends of the wire posts (5) penetrate through the through grooves (4) and are located in the shell (2), flanges are arranged at the other ends of the wire posts (5), the flanges are fixedly connected with the side wall of the shell (2) through bolts in a bolted mode, wire connecting seats (7) are mounted at two ends of the shell (2), one group of the wire connecting seats (7) is communicated with two ends of the first coil, and the other group of the wire connecting seats (7) is communicated with two ends of the second coil;

wire holder (7) are including fixed mounting in box body (71) on casing (2) surface, the inside slidable mounting of box body (71) has slide (74), two sets of cardboard (75) are installed to the bottom symmetry of slide (74), cassette (77) of two sets of and cardboard (75) looks adaptation are installed to the interior bottom symmetry of box body (71), draw-in groove (76) with coil looks adaptation are seted up to the bottom of cardboard (75), the both ends of coil all run through casing (2) and box body (71) and are located cassette (77), the inner wall of draw-in groove (76) and the surface joint of coil.

2. The base for fixing the secondary coil of the current transformer according to claim 1, wherein: the top of slide (74) is fixed with pull rod (72), the top of pull rod (72) runs through box body (71) and extends to fixedly connected with pull ring (73).

3. The base for fixing the secondary coil of the current transformer according to claim 2, wherein: the sliding plate (74) is located on two sides of the pull rod (72) and is fixedly connected with a limiting rod (78), the upper end of the limiting rod (78) penetrates through the upper portion of the box body (71) located on the box body (71), and the limiting rod (78) is located on the outer wall of one end of the inner portion of the box body (71) and is sleeved with a compression spring (79).

4. The base for fixing the secondary coil of the current transformer according to claim 1, wherein: a mounting opening is formed in one side of the box body (71), and a box cover (710) is mounted inside the mounting opening through bolt bolting.

5. The base for fixing the secondary coil of the current transformer according to claim 1, wherein: a partition board (6) is fixedly mounted on one side of the inner wall of the shell (2), the partition board (6) is located between the two groups of wire columns (5), and the partition board (6) is made of an insulating material.

6. The base for fixing the secondary coil of the current transformer according to claim 1, wherein: the two ends of the base (1) are connected with mounting blocks (9), the mounting blocks (9) are integrally formed with the base (1), and two sets of mounting holes (10) are symmetrically formed in the mounting blocks (9).

7. The base for fixing the secondary coil of the current transformer according to claim 1, wherein: the upper end of the base (1) is provided with ventilation meshes (8), and the ventilation meshes (8) are positioned below the two groups of line columns (5).