CN211237967U

CN211237967U - Fixed bus type current transformer

Info

Publication number: CN211237967U
Application number: CN201922450995.2U
Authority: CN
Inventors: 毕风雷
Original assignee: Suzhou Jingyi Switch Co ltd
Current assignee: Suzhou Jingyi Switch Co ltd
Priority date: 2019-12-30
Filing date: 2019-12-30
Publication date: 2020-08-11
Anticipated expiration: 2029-12-30

Abstract

The utility model discloses a fixed generating line formula current transformer belongs to mutual-inductor technical field. A fixed bus type current transformer comprises a base, wherein a connecting column is fixedly connected to the upper surface of the base, a transformer body is fixedly connected to the upper surface of the connecting column, a clamping groove is formed in the outer surface of the transformer body, coils are clamped in the clamping groove, the number of the coils is 6, and the 6 coils are fixedly connected with the transformer body in an annular array mode; the utility model discloses a last fixed surface of base is connected with the spliced pole, and the last fixed surface of spliced pole is connected with the mutual-inductor body, and the draw-in groove has been seted up to the surface of mutual-inductor body, and the inside joint of draw-in groove has the coil, makes the mutual-inductor pass through the parcel of coil and guarantees that the clearance between insulating layer and the mutual-inductor reduces, conveniently extracts inside air simultaneously to prevent to cause mutual-inductor partial discharge.

Description

Fixed bus type current transformer

Technical Field

The utility model relates to a mutual-inductor technical field especially relates to a fixed generating line formula current transformer.

Background

The current transformer principle is based on the electromagnetic induction principle. The current transformer is composed of a closed iron core and a winding. The primary winding of the current transformer has few turns and is connected in series in a circuit of current to be measured, so that all current of the circuit always flows through the current transformer, the secondary winding has more turns and is connected in series in a measuring instrument and a protection circuit, the secondary circuit of the current transformer is always closed when the current transformer works, so that the impedance of a coil connected in series with the measuring instrument and the protection circuit is very small, the working state of the current transformer is close to short circuit, the most common connection modes of the current transformer are single-phase, three-phase and incomplete star, and the error of the transformer is reduced by adopting some compensation methods, however, in the existing transformer, the insulation of the transformer is very thick, some insulation wraps are loose, an insulation interlayer has folds, and the vacuum inside the transformer is not processed, so that the inside of the transformer is filled with a small amount of air, the fault of partial discharge of the transformer can be caused, make mutual-inductor contact fault, in order to can the fixed bus to reduce the fold of insulating layer, avoid the mutual-inductor inside to be filled with the air, cause and discharge, consequently need a fixed bus to make current transformer.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the problem of poor effect of the fixed bus bar in the prior art and providing a fixed bus bar type current transformer.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model provides a fixed bus formula current transformer, includes the base, the last fixed surface of base is connected with the spliced pole, the last fixed surface of spliced pole is connected with the mutual-inductor body, the draw-in groove has been seted up to the surface of mutual-inductor body, the inside joint of draw-in groove has the coil, the quantity of coil is 6, and 6 the coil is with annular array's form fixedly connected with mutual-inductor body, the last fixed surface of mutual-inductor body is connected with the fixed plate, a side fixedly connected with connection piece on fixed plate top.

Preferably, a through hole is formed in one side of the upper surface of the base, a first screw is connected to the inner thread of the through hole in a threaded manner, and a first gasket is sleeved on the outer surface of the first screw.

Preferably, a jack is formed in one side face of the connecting piece, a second screw is inserted into the jack, and a fixing nut is connected to one side face of the second screw in a threaded mode.

Preferably, the box is placed to the middle part fixedly connected with of base upper surface, the through-hole has been seted up at the middle part of placing the box surface, the bottom fixedly connected with connecting plate of placing the box inner wall, the one end fixedly connected with second packing ring of connecting plate.

Preferably, the bottom of base fixedly connected with supporting seat, the screw has been seted up to a side of supporting seat bottom, the inner wall of screw is provided with the thread groove.

Preferably, the bottom of the inner wall of the placing box is provided with a jack, the inner thread of the jack is connected with a third screw, and the outer surface of the third screw is sleeved with a second gasket.

Compared with the prior art, the utility model provides a fixed generating line formula current transformer possesses following beneficial effect:

1. the utility model discloses, upper surface fixedly connected with spliced pole through the base, the last fixed surface of spliced pole is connected with mutual-inductor body, the draw-in groove has been seted up to mutual-inductor body's surface, the inside joint of draw-in groove has the coil, it guarantees the clearance reduction between insulating layer and the mutual-inductor to make the mutual-inductor pass through the parcel of coil, conveniently extract inside air simultaneously, in order to prevent to make mutual-inductor partial discharge, upper surface fixedly connected with fixed plate through mutual-inductor body, the jack has been seted up to a side of a side fixedly connected with connection piece on fixed plate top, it has the second screw to peg graft in the inside of jack, a side threaded connection of second screw has fixation nut, make the mutual-inductor convenient wiring when using whether too big between the measuring current.

2. The utility model discloses, through the middle part fixedly connected with of base upper surface place the box, place the bottom fixedly connected with connecting plate of box inner wall, the one end fixedly connected with second packing ring of connecting plate, it has third screw to peg graft in the middle part of second packing ring, the third screw is connected with the base through the jack screw thread of placing the box bottom, through the connecting plate, make the part of placing the box inside carry out effectual connection and fixed, the second packing ring makes the third screw fix simultaneously and makes the surface friction of avoiding the mutual-inductor, reduce the damage of insulating layer, and then increase the live time of mutual-inductor, through the bottom fixedly connected with supporting seat of base, a side of supporting seat bottom has seted up the through-hole, the inner wall of through-hole is provided with the thread groove, make the current transformer convenient installation and dismantlement, simultaneously through the through-hole of supporting seat bottom, fix, and detects the current thereof.

Drawings

Fig. 1 is a schematic structural view of the present invention;

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

FIG. 3 is a schematic view of the structure of the placing box of the present invention;

fig. 4 is a schematic view of the supporting seat structure of the present invention.

In the figure: 1. a base; 2. a first gasket; 3. a first screw; 4. a transformer body; 5. connecting sheets; 6. placing the box; 7. a fixing plate; 8. a second screw; 9. fixing a nut; 10. a second gasket; 11. a connecting plate; 12. a third screw; 13. a supporting seat; 14. a screw hole; 15. connecting columns; 16. and a coil.

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.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Referring to fig. 1-4, a fixed bus type current transformer comprises a base 1, wherein a connecting column 15 is fixedly connected to the upper surface of the base 1, a transformer body 4 is fixedly connected to the upper surface of the connecting column 15, a clamping groove is formed in the outer surface of the transformer body 4, coils 16 are clamped in the clamping groove, gaps between insulating layers are reduced, wrinkles of the insulating layers are reduced, the number of the coils 16 is 6, 6 coils 16 are fixedly connected to the transformer body 4 in an annular array manner, a fixing plate 7 is fixedly connected to the upper surface of the transformer body 4, a connecting plate 5 is fixedly connected to one side surface of the top end of the fixing plate 7, so that a worker can conveniently measure the current during connection, a through hole is formed in one side of the upper surface of the base 1, and a first screw 3 is in threaded connection with the inside of the through hole, the outer surface of the first screw 3 is sleeved with a first gasket 2, one side surface of the connecting sheet 5 is provided with an insertion hole, a second screw 8 is inserted in the jack, a fixed nut 9 is connected with one side surface of the second screw 8 through threads, the middle part of the upper surface of the base 1 is fixedly connected with a placing box 6, the middle part of the outer surface of the placing box 6 is provided with a through hole, the bottom of the inner wall of the placing box 6 is fixedly connected with a connecting plate 11, one end of the connecting plate 11 is fixedly connected with a second gasket 10, so that the components in the placing box 6 are fixedly connected, the connection among the components is strengthened, the bottom of the base 1 is fixedly connected with a supporting seat 13, screw 14 has been seted up to a side of supporting seat 13 bottom, the inner wall of screw 14 is provided with the thread groove and makes the mutual-inductor place and peg graft in the plane, makes things convenient for the staff to carry out the wiring to prevent that the mutual-inductor from dropping or falling to the ground.

In the utility model, a connecting column 15 is fixedly connected with the upper surface of a base 1, a mutual inductor body 4 is fixedly connected with the upper surface of the connecting column 15, a clamping groove is arranged on the outer surface of the mutual inductor body 4, a coil 16 is clamped in the clamping groove, the mutual inductor ensures the gap between an insulating layer and the mutual inductor to be reduced through the wrapping of the coil 16, meanwhile, the air in the mutual inductor is conveniently extracted, so as to prevent the partial discharge of the mutual inductor, a fixing plate 7 is fixedly connected with the upper surface of the mutual inductor body 4, one side surface of the top end of the fixing plate 7 is fixedly connected with a connecting sheet 5, one side surface of the connecting sheet 5 is provided with a jack, a second screw 8 is inserted in the jack, one side surface of the second screw 8 is in threaded connection with a fixing nut 9, so that the mutual inductor can conveniently measure whether the error between currents is overlarge, the bottom of the inner wall of the placing box 6 is fixedly connected with a connecting plate 11, one end of the connecting plate 11 is fixedly connected with a second gasket 10, a third screw 12 is inserted in the middle of the second gasket 10, the third screw 12 is connected with the base 1 through a jack thread at the bottom of the placing box 6, parts in the placing box 6 are effectively connected and fixed through the connecting plate 11, meanwhile, the third screw 12 is fixed through the second gasket 10 to avoid the outer surface friction of the mutual inductor, the damage of an insulating layer is reduced, the service time of the mutual inductor is further prolonged, a supporting seat 13 is fixedly connected with the bottom of the base 1, a screw hole 14 is formed in one side face of the bottom end of the supporting seat 13, a thread groove is formed in the inner wall of the screw hole 14, the current mutual inductor is convenient to mount and dismount, meanwhile, the current mutual inductor can be fixed on a, and detects the current thereof.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. The utility model provides a fixed bus formula current transformer, includes base (1), its characterized in that, the last fixed surface of base (1) is connected with spliced pole (15), the last fixed surface of spliced pole (15) is connected with mutual-inductor body (4), the draw-in groove has been seted up to the surface of mutual-inductor body (4), the inside joint of draw-in groove has coil (16), the quantity of coil (16) is 6, and 6 coil (16) are with annular array's form fixedly connected with mutual-inductor body (4), the last fixed surface of mutual-inductor body (4) is connected with fixed plate (7), a side fixedly connected with connection piece (5) on fixed plate (7) top.

2. The bus-fixed current transformer according to claim 1, wherein a through hole is formed in one side of the upper surface of the base (1), a first screw (3) is connected to the through hole through internal threads, and a first gasket (2) is sleeved on the outer surface of the first screw (3).

3. The bus-fixed current transformer according to claim 1, wherein a jack is formed in one side surface of the connecting piece (5), a second screw (8) is inserted into the jack, and a fixing nut (9) is connected to one side surface of the second screw (8) in a threaded manner.

4. The fixed bus type current transformer according to claim 1, wherein a placing box (6) is fixedly connected to the middle of the upper surface of the base (1), a through hole is formed in the middle of the outer surface of the placing box (6), a connecting plate (11) is fixedly connected to the bottom of the inner wall of the placing box (6), and a second gasket (10) is fixedly connected to one end of the connecting plate (11).

5. The bus-fixed current transformer according to claim 1, wherein a support base (13) is fixedly connected to the bottom of the base (1), a screw hole is formed in one side surface of the bottom end of the support base (13), and a thread groove is formed in the inner wall of the screw hole.

6. The bus type current transformer as claimed in claim 4, wherein the bottom of the inner wall of the box (6) is provided with a jack, and the inner part of the jack is connected with a third screw (12) by screw thread.

7. The bus-fixed current transformer according to claim 6, wherein the second washer (10) is sleeved on the outer surface of the third screw (12).