CN106935383A

CN106935383A - A kind of plastic cement composite current transformer

Info

Publication number: CN106935383A
Application number: CN201610604658.2A
Authority: CN
Inventors: 何排枝
Original assignee: Individual
Current assignee: Individual
Priority date: 2016-07-27
Filing date: 2016-07-27
Publication date: 2017-07-07
Anticipated expiration: 2036-07-27
Also published as: CN106935383B

Abstract

The invention discloses a kind of plastic cement composite current transformer, including wear a mutual inductor coil for circuit；The coil is cast in the current transformer body of silicon rubber formation, and the support coil is additionally provided with the main body and the plastic skeleton of the agent structure intensity is met；The secondary wiring terminals group of the coil is located at the body outer surface；Mutual inductor coil and plastic skeleton one cast silicon rubber are formed transformer by the present invention, the insulating requirements of transformer are met using the good insulating properties of silicon rubber, while more environmentally friendly；And silicon rubber is lower compared to the fusing point of plastics, nylon, the damage of coil is not resulted in；And plastic skeleton then plays a part of supportive body and coil, it is to avoid the yielding problem of silicon rubber, the structural strength of transformer is met, it is safer durable.

Description

A kind of plastic cement composite current transformer

Technical field

The present invention relates to current transformer, especially a kind of plastic cement composite current transformer.

Background technology

Since epoxy resin invention in 1904, China is largely used for electric apparatus product, such as mutual inductance using epoxy resin Device.But because epoxy resin is carcinogenic, and it is difficult to be degraded, severe contamination environment, scientists from all over the world energetically find substitute.

Since 2010, many universities and scientific research institution all can replace epoxy resin product, such as silicon in searching for China Rubber, plastics formula current transformer etc..But it is constrained to the physical property of plastics and silicon rubber：Silicon rubber is soft, silicon rubber formula Current transformer process is heated or stress will deform, and so as to destroy the insulating properties of silicon rubber, causes quality accident；Plastics Insulating properties it is poorer than silicon rubber, and fusing point is also higher than enamel-covered wire, directly destroys the coil of transformer, so, use plastic production More than 6kV current transformer products, manufacture is highly difficult.

Therefore, design it is a kind of it is new it is more environmentally friendly, disclosure satisfy that structural strength demand and safer durable electric current Transformer seems very necessary.

The content of the invention

In order to overcome the deficiencies in the prior art, concentrated on studies through inventor, the present invention provides a kind of compound electric current of plastic cement Transformer.

The technical solution adopted for the present invention to solve the technical problems is：

A kind of plastic cement composite current transformer, including wear a mutual inductor coil for circuit；The coil is cast In the current transformer body that silicon rubber is formed, the support coil is additionally provided with the main body and the agent structure intensity is met Plastic skeleton；The secondary wiring terminals group of the coil is located at the body outer surface.

The plastic skeleton includes plastic base, and plastic support ring is vertically installed with the substrate and a circuit is worn Through hole, the coil sets and is fixed in the support ring around the through hole.

The through hole wears the metal guide rod for being connected to and extending to outside the main body.

The main body is provided with the through hole of the correspondence through hole.

The substrate extends the main body outside and is provided with transformer installation position.

The main body is externally provided with plastic mounting base plate, which is provided with transformer installation position；The mounting base and the master Internal plastic skeleton is fixedly connected.

Metal reinforcing is provided with the main body；The reinforcement is set on the substrate.

Plastics reinforcement is provided with the main body；The reinforcement is arranged on the mounting base and/or the substrate.

The coil is provided with multiple taps.

The beneficial effects of the invention are as follows：Mutual inductor coil and plastic skeleton one cast silicon rubber are formed mutual inductance by the present invention Device, the insulating requirements of transformer is met using the good insulating properties of silicon rubber, while more environmentally friendly；And silicon rubber is compared to modeling Material, nylon fusing point it is lower, do not result in the damage of coil；And plastic skeleton then plays a part of supportive body and coil, keep away Exempt from the yielding problem of silicon rubber, meet the structural strength of transformer, it is safer durable.

Brief description of the drawings

The present invention is further described with reference to the accompanying drawings and examples.

Fig. 1 is the structural representation of an embodiment of the present invention；

Fig. 2 is the structural representation of plastic skeleton in Fig. 1；

Fig. 3 is another embodiment of the present invention；

Fig. 4 is the third embodiment of the invention；

Fig. 5 is the 4th kind of embodiment of the invention；

Fig. 6 is the stereogram of Fig. 5；

Fig. 7 is the structural representation of plastic skeleton in Fig. 5.

Specific embodiment

Reference picture 1, Fig. 2, a kind of plastic cement composite current transformer, including wear a mutual inductor coil for circuit 1；Institute State coil 1 to be cast in the current transformer body 3 of silicon rubber formation, the support coil 1 is additionally provided with the main body 3 and is met The plastic skeleton 2 of the structural strength of the main body 3；The secondary wiring terminals group 4 of the coil 1 connects positioned at the outer surface of the main body 3 Enter in secondary line, the insulating requirements of transformer are met using the good insulating properties of silicon rubber, it is more environmentally friendly；And silicon rubber phase Fusing point than plastics, nylon is lower, does not result in the damage of coil；And plastic skeleton 2 then plays supportive body 3 and coil 1 Effect, it is to avoid the yielding problem of silicon rubber, meets the structural strength of transformer, safer durable.

Reference picture 2, the plastic skeleton 2 includes plastic base 21, and plastic support ring is vertically installed with the substrate 21 22 and a through hole for circuit 23 is worn, the coil 1 sets and be fixed in the support ring 22 around the through hole 23, described Coil 1 can be wound on the outside of support ring 22 or card is placed on the inner side of support ring 22.

Further, the through hole 23 wears a metal guide rod 7 composition bus for being connected to and extending to outside the silica gel main body 3 Access a circuit in type current transformer, the two ends of a metal guide rod 7.

Reference picture 3, is another embodiment of the present invention, and the silica gel main body 3 is provided with the through hole of the correspondence through hole 23 31, a wire is directly worn during installation and connect through hole 31, as straight-through current transformer.

The substrate 21 extends the outside of the main body 3 and is provided with transformer installation position 6, full by one moulding by casting Installing and using for sufficient bus type and core through type current transformer, manufactures very convenient simple.

Reference picture 6, for different installation requirements, can be externally provided with plastic mounting base plate 5 in the silica gel main body 3, install The position that base plate 5 exposes silica gel main body 3 can be provided with transformer installation position 6；Can lead between the mounting base 5 and plastic skeleton 2 The mode for crossing integrated injection molding is fixedly connected, and the making of current transformer is completed finally by cast silica gel, more easy.

And a metal guide rod 7 is according to installation settings mode, and its set location is different, as shown in Figure 4, Figure 5, as The mesh font and goat's horn type of support type current transformer, meet current transformer installation requirement at different conditions, are applicable model Enclose wider.

Reference picture 2 and Fig. 7, in order to further strengthen being provided with modeling in the structural strength of current transformer, the silica gel main body 3 Material reinforcement 8；The reinforcement 8 is arranged on the mounting base 5 and/or the substrate 21, and three is by being integrally formed Arrive, simple and efficient, low cost.

Additionally, the coil 1 can be provided with multiple taps forms polytropic ratio, flexibility is stronger, and secondary wiring terminals group 4 Quantity is then determined according to actual number of taps.

After using technical scheme, by the cooperation of silicon rubber and plastic skeleton 2, possess current transformer It is more environmentally friendly while good insulating performance, durable, can be widely used in electric power field.

Claims

1. a kind of plastic cement composite current transformer, it is characterised in that：Including wearing a mutual inductor coil for circuit (1)；Institute State coil (1) to be cast in the current transformer body (3) of silicon rubber formation, the support coil is additionally provided with the main body (3) (1) and the plastic skeleton (2) of the main body (3) structural strength is met；The secondary wiring terminals group (4) of the coil (1) is located at Main body (3) outer surface.

2. current transformer according to claim 1, it is characterised in that：The plastic skeleton (2) is including plastic base (21), it is vertically installed with plastic support ring (22) on the substrate (21) and wears a through hole for circuit (23), the coil (1) set and be fixed in the support ring (22) around the through hole (23).

3. current transformer according to claim 2, it is characterised in that：The through hole (23) is worn to be connected to and extends to the master Body (3) metal guide rod (7) of a metal guide rod outward.

4. current transformer according to claim 2, it is characterised in that：The main body (3) is provided with the correspondence through hole (23) through hole (31).

5. the current transformer according to Claims 2 or 3 or 4, it is characterised in that：The substrate (21) extends the master Body (3) outside is simultaneously provided with transformer installation position (6).

6. the current transformer according to Claims 2 or 3 or 4, it is characterised in that：The main body (3) is externally provided with plastics peace Dress base plate (5), which is provided with transformer installation position (6)；Plastic skeleton (2) in the mounting base (5) and the main body (3) It is fixedly connected.

7. current transformer according to claim 2, it is characterised in that：Metal reinforcing is provided with the main body (3) (8)；The reinforcement (8) is arranged on the substrate (21).

8. current transformer according to claim 6, it is characterised in that：Plastics reinforcement is provided with the main body (3) (8)；The reinforcement (8) is arranged on the mounting base (5) and/or the substrate (21).

9. current transformer according to claim 1, it is characterised in that：The coil (1) is provided with multiple taps.