CN220873378U

CN220873378U - Current transformer coil for ring main unit

Info

Publication number: CN220873378U
Application number: CN202322665604.5U
Authority: CN
Inventors: 翟辉; 乔军
Original assignee: Shanghai Zhuogao Electric Dongtai Co ltd
Current assignee: Shanghai Zhuogao Electric Dongtai Co ltd
Priority date: 2023-10-07
Filing date: 2023-10-07
Publication date: 2024-04-30
Anticipated expiration: 2033-10-07

Abstract

The utility model discloses a current transformer coil for a ring main unit, which relates to the technical field of ring main units and comprises a first iron core and a second iron core, wherein the first iron core and the second iron core form a complete iron core together, side walls at one end of the first iron core and one end of the second iron core are fixedly connected with first mounting plates, through holes are formed in the upper surface of each first mounting plate, and a fixing rod is connected in the through holes in a common rotation mode. According to the utility model, the bolts are rotated through the fixing mechanisms arranged at one ends of the first iron core and the second iron core and are moved out from the interiors of the two internal threaded holes, and then the first iron core and the second iron core can rotate along the fixing rod, so that the wire can be more convenient in winding, the first iron core and the second iron core are reversely rotated after the wire is wound, and finally the bolts are re-screwed into the interiors of the two internal threaded holes, so that the first iron core and the second iron core can be fixed.

Description

Current transformer coil for ring main unit

Technical Field

The utility model relates to the technical field of ring main units, in particular to a current transformer coil for a ring main unit.

Background

In recent years, a ring network distribution mode is developed rapidly in some large and medium cities in China, and ring network distribution switch equipment (called a ring network cabinet for short) is the most commonly used switch equipment in the urban ring network distribution mode due to small volume and small occupied area.

Through retrieval, a core penetrating type current transformer for a ring main unit with the publication number of CN211045254U is characterized in that a shell is annular, an iron core is arranged in the shell, a buffer material is wrapped outside the iron core, wires are wound on the outside of the buffer material in the same sequence to form a secondary winding, the secondary winding is poured in the shell, two rubber plugs are arranged in a central hole in the annular middle part of the shell, protrusions are arranged in the rubber plugs, a secondary block is fixed on the shell, a through hole is formed in the secondary block, and a secondary insert is placed in the through hole.

For the above scheme, the following disadvantages exist:

In the technical scheme, the iron core in the coil is integrated, so that the wire needs to pass through the central hole of the coil when being wound, thereby causing great trouble and increasing the threading difficulty of staff.

Disclosure of utility model

The utility model is provided in view of the problems of the core-penetrating type current transformer for the prior ring main unit.

Therefore, the utility model aims to provide a current transformer coil for a ring main unit, which solves the problems that the wire needs to pass through the central hole of the coil when the wire is wound, so that the wire is very troublesome and the threading difficulty of staff is increased.

In order to achieve the above object, the present utility model provides the following technical solutions:

The utility model provides a current transformer coil for looped netowrk cabinet, includes first iron core and second iron core, a complete iron core is constituteed jointly to first iron core and second iron core, the first mounting panel of the equal fixedly connected with of lateral wall of first iron core and second iron core one end, every the through-hole has all been seted up to the upper surface of first mounting panel, every the inside of through-hole rotates jointly and is connected with the dead lever, the one end of keeping away from the dead lever of first iron core and second iron core is provided with fixed establishment jointly, the surface of first iron core and second iron core is all twined there is the wire, the surface of first iron core and second iron core is provided with annular shell, annular shell's center is provided with buffer gear, and fixed establishment can make first iron core and second iron core openable and close to make things convenient for the winding of coil.

Preferably, the fixing mechanism comprises two second mounting plates and bolts, the two second mounting plates are respectively and fixedly connected to the side walls of one end of the first iron core or the second iron core, the two inner threaded holes are formed in the surfaces of the two second mounting plates, the bolts are sleeved in the inner portions of the two inner threaded holes in a threaded mode, and the first iron core and the second iron core can be fixed through the bolts.

Preferably, the buffer gear includes a plurality of telescopic links, a plurality of spring and a plurality of clamp splice, every the equal fixed connection of telescopic link is in annular housing's lateral wall and two liang symmetries, every the clamp splice is fixed connection respectively in the one end that corresponds the telescopic link and keep away from annular housing, every the spring slides respectively and cup joints in the pole wall that corresponds the telescopic link, utilizes buffer gear can prevent the excessive vibration of cable that passes annular housing in the looped netowrk cabinet.

Preferably, both ends of the fixing rod are fixedly connected with circular check blocks, and the fixing rod can be effectively prevented from falling off by utilizing the two circular check blocks.

Preferably, insulating paper is wound between the first iron core and the corresponding wires, and the first iron core, the second iron core and the corresponding wires can be protected by the insulating paper, so that the service lives of the first iron core, the second iron core and the corresponding wires are prolonged.

Preferably, each clamping block is fixedly connected with a rubber pad on one side, and excessive friction between each clamping block and the cable can be prevented by using each rubber pad, so that the cable is protected.

Preferably, two epoxy resin layers are arranged between the first iron core and the annular shell in a surrounding manner, and the device can be protected by the two epoxy resin layers.

Preferably, one end of each of the two wires is provided with a pin, and the two pins are used to connect with the detector, thereby detecting the current passing through the cable.

Preferably, the first iron core and the second iron core are made of silicon steel materials, and the silicon steel materials have the characteristics of high magnetic permeability, low coercive force, large resistivity and the like, so that the precision of the current transformer can be higher.

Preferably, the lead is made of a barrel material, and the barrel has good conductivity, so that the precision of the current transformer can be further improved.

In the technical scheme, the utility model has the technical effects and advantages that:

1. According to the utility model, the bolts are rotated through the fixing mechanisms arranged at one ends of the first iron core and the second iron core, the bolts are moved out of the two internal threaded holes, and then the first iron core and the second iron core can rotate along the fixing rods, so that the wires can be more convenient to wind, the first iron core and the second iron core are reversely rotated after the wires are wound, and finally the bolts are re-screwed into the two internal threaded holes, so that the first iron core and the second iron core can be fixed.

2. According to the utility model, through the buffer mechanism arranged in the center of the annular shell, when the cable in the ring main unit passes through the middle of the annular shell, each clamping block is tightly attached to the surface of the cable under the action of the corresponding spring, and meanwhile, the vibration force generated when the cable shakes can be buffered by utilizing the elasticity of each spring, so that the measurement of the current transformer is more accurate.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings required for the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments described in the present utility model, and other drawings may be obtained according to these drawings for a person having ordinary skill in the art.

FIG. 1 is a schematic diagram of the structure of the present utility model;

Fig. 2 is a schematic view showing a structure in which a first core and a second core of the present utility model are opened;

FIG. 3 is an enlarged schematic view of portion A of FIG. 1 in accordance with the present utility model;

Fig. 4 is a schematic perspective view showing the connection of the fixing rod and two circular stoppers according to the present utility model.

Reference numerals illustrate:

1. A first iron core; 2. a second iron core; 3. a first mounting plate; 4. a fixed rod; 5. a wire; 6. an annular housing; 7. a second mounting plate; 8. a bolt; 9. pins; 10. a telescopic rod; 11. a spring; 12. clamping blocks; 13. a circular stop; 14. insulating paper; 15. a rubber pad; 16. an epoxy resin layer.

Detailed Description

In order to make the technical scheme of the present utility model better understood by those skilled in the art, the present utility model will be further described in detail with reference to the accompanying drawings.

The embodiment of the utility model discloses a current transformer coil for a ring main unit.

Example 1

Referring to fig. 1-4, a current transformer coil for looped netowrk cabinet, including first iron core 1 and second iron core 2, first iron core 1 and second iron core 2 constitute a complete iron core jointly, the first mounting panel 3 of the equal fixedly connected with of lateral wall of first iron core 1 and second iron core 2 one end, the through-hole has all been seted up to the upper surface of every first mounting panel 3, the inside of every through-hole rotates jointly and is connected with dead lever 4, the surface of first iron core 1 and second iron core 2 has all been twined wire 5, the one end that keeps away from dead lever 4 of first iron core 1 and second iron core 2 is provided with fixed establishment jointly, fixed establishment includes two second mounting panels 7 and bolt 8, the lateral wall of two second mounting panels 7 one end respectively fixed connection in first iron core 1 or second iron core 2, the internal thread hole has all been seted up on the surface of two second mounting panels 7, the inside of bolt 8 screw-thread cup joints in two internal thread holes.

The bolt 8 is rotated and removed from the inside of the two internally threaded holes, and then the first iron core 1 and the second iron core 2 can be rotated along the fixing rod 4, so that the wire 5 can be more conveniently wound, the first iron core 1 and the second iron core 2 can be reversely rotated after the wire 5 is wound, and finally the first iron core 1 and the second iron core 2 can be fixed after the bolt 8 is re-screwed into the inside of the two internally threaded holes.

Referring to fig. 1, the outer surfaces of the first and second cores 1 and 2 are provided with an annular housing 6, the center of the annular housing 6 is provided with a buffer mechanism comprising a plurality of telescopic rods 10, a plurality of springs 11 and a plurality of clamping blocks 12, each telescopic rod 10 is fixedly connected to the side wall of the annular housing 6 and is symmetrical in pairs, each clamping block 12 is fixedly connected to one end, far away from the annular housing 6, of the corresponding telescopic rod 10, and each spring 11 is respectively and slidably sleeved on the rod wall of the corresponding telescopic rod 10.

When the cable in the looped netowrk cabinet passes through from the centre of annular shell 6, every clamp splice 12 is all closely attached on the surface of cable under the effect of corresponding spring 11, and the vibration force that produces when utilizing the elasticity of every spring 11 can cushion the cable and rock simultaneously to make the more accurate of current transformer measurement.

Example two

On the basis of the first embodiment, referring to fig. 3 to 4, both ends of the fixing rod 4 are fixedly connected with circular stoppers 13.

The fixing rod 4 can be effectively prevented from falling off by using the two circular stoppers 13.

Example III

On the basis of the first embodiment, referring to fig. 1 to 2, insulating paper 14 is wound between each of the first core 1 and the second core 2 and the corresponding wire 5.

The first core 1 and the second core 2 can be protected by the insulating paper 14.

Example IV

On the basis of the first embodiment, referring to fig. 1-2, a rubber pad 15 is fixedly connected to one side of each clamping block 12.

The use of each rubber pad 15 can effectively prevent excessive friction between the clamping blocks 12 and the cable surface, thereby avoiding damage to the cable.

Example five

On the basis of the first embodiment, referring to fig. 1 to 2, two epoxy resin layers 16 are provided around between the first and second cores 1 and 2 and the annular housing 6.

The device may be protected by the epoxy layer 16, thereby improving the service life of the device.

Example six

On the basis of the first embodiment, referring to fig. 1-2, one end of both wires 5 is provided with pins 9.

The device can be connected to a detector by means of two pins 9, so that the intensity of the current passing in the cable is detected.

Example seven

On the basis of the first embodiment, referring to fig. 1-2, the first iron core 1 and the second iron core 2 are made of silicon steel, and the wire 5 is made of a tube material.

The current transformer measurement can be more accurate.

While certain exemplary embodiments of the present utility model have been described above by way of illustration only, it will be apparent to those of ordinary skill in the art that modifications may be made to the described embodiments in various different ways without departing from the spirit and scope of the utility model. Accordingly, the drawings and description are to be regarded as illustrative in nature and not as restrictive of the scope of the utility model, which is defined by the appended claims.

Claims

1. The utility model provides a current transformer coil for looped netowrk cabinet, includes first iron core (1) and second iron core (2), its characterized in that, a complete iron core is constituteed jointly to first iron core (1) and second iron core (2), the lateral wall of first iron core (1) and second iron core (2) one end is equal fixedly connected with first mounting panel (3), every the through-hole has all been seted up to the upper surface of first mounting panel (3), every the inside of through-hole rotates jointly and is connected with dead lever (4), the one end that keeps away from dead lever (4) of first iron core (1) and second iron core (2) is provided with fixed establishment jointly, the surface of first iron core (1) and second iron core (2) all twines wire (5), the surface of first iron core (1) and second iron core (2) is provided with annular shell (6), the center of annular shell (6) is provided with buffer gear.

2. The current transformer coil for a ring main unit according to claim 1, wherein the fixing mechanism comprises two second mounting plates (7) and bolts (8), the two second mounting plates (7) are respectively and fixedly connected to the side wall of one end of the first iron core (1) or the second iron core (2), the surfaces of the two second mounting plates (7) are provided with internal threaded holes, and the bolts (8) are in threaded sleeve connection with the inside of the two internal threaded holes.

3. The current transformer coil for a ring main unit according to claim 1, wherein the buffer mechanism comprises a plurality of telescopic rods (10), a plurality of springs (11) and a plurality of clamping blocks (12), each telescopic rod (10) is fixedly connected to the side wall of the annular housing (6) and is symmetrical in pairs, each clamping block (12) is respectively and fixedly connected to one end, far away from the annular housing (6), of the corresponding telescopic rod (10), and each spring (11) is respectively and slidably sleeved on the rod wall of the corresponding telescopic rod (10).

4. The current transformer coil for a ring main unit according to claim 1, wherein two ends of the fixing rod (4) are fixedly connected with round stop blocks (13).

5. The current transformer coil for the ring main unit according to claim 1, wherein insulating paper (14) is wound between the first iron core (1) and the second iron core (2) and the corresponding wire (5).

6. A current transformer coil for a ring main unit according to claim 3, characterized in that a rubber pad (15) is fixedly connected to one side of each clamping block (12).

7. A current transformer coil for a ring main unit according to claim 3, characterized in that two epoxy resin layers (16) are arranged around between the first core (1) and the second core (2) and the annular housing (6).

8. A current transformer coil for a ring main unit according to claim 3, characterized in that one end of both wires (5) is provided with pins (9).

9. A current transformer coil for a ring main unit according to claim 3, characterized in that the first iron core (1) and the second iron core (2) are made of silicon steel.

10. A current transformer coil for a ring main unit according to claim 3, characterized in that the wires (5) are made of a cylindrical material.