CN207409371U

CN207409371U - Device body inside a kind of semi-enclosed structure voltage mutual inductor

Info

Publication number: CN207409371U
Application number: CN201721319405.7U
Authority: CN
Inventors: 冷联; 陈锦华
Original assignee: ZHENJIANG DANGAO ELECTRIC CO Ltd
Current assignee: ZHENJIANG DANGAO ELECTRIC CO Ltd
Priority date: 2017-10-13
Filing date: 2017-10-13
Publication date: 2018-05-25
Anticipated expiration: 2027-10-13

Abstract

The utility model proposes a kind of semi-enclosed structure voltage mutual inductor inside device body, including iron core, first winding and secondary winding, first winding draws a connection inserting part via conducting wire, and pass through conducting wire and fixture block is suspended in designated position, at least 2 strata membrane of lipoprotein are coated on the outer surface of iron core, and wind insulating tape, iron core is by iron core limited block defined position simultaneously, the utility model is simple in structure, by by iron core, first winding position limits, cast difficulty is greatly lowered, promote the production efficiency of voltage transformer, first winding and secondary winding middle ware after pouring into a mould simultaneously is away from suitable and uniform, power frequency breakdown and shelf depreciation can be greatly lowered, improve voltage transformer working performance.

Description

Device body inside a kind of semi-enclosed structure voltage mutual inductor

Technical field

The utility model is related to voltage transformer field, device inside more particularly to a kind of semi-enclosed structure voltage mutual inductor Body.

Background technology

In Operation of Electric Systems, one of voltage transformer equipment important as electric system, the energy of stable operation Power is very crucial, and the inside device body (iron core, first winding and secondary winding) of three-phase combined voltage mutual inductor originally is mostly It is poured into a mould by the way of second pouring, is that first winding can not using the main reason for old-fashioned second pouring mode Positioning, the position relationship of first winding and secondary winding need to just be guaranteed in once-cast, therefore, need first by once around Internal device body and ceramic shell cast, could then be integrated by group and secondary winding cast connection, and in order to ensure to pour for the first time The efficiency of note is mostly directly to be poured into a mould using PMP composite membranes, after cast between first winding and secondary winding, easy work Frequency breakdown and shelf depreciation, and the production efficiency of voltage transformer is caused to be greatly diminished.

Utility model content

The utility model proposes device body inside a kind of semi-enclosed structure voltage mutual inductor regarding to the issue above, possesses intelligence The characteristics of energy temperature control, the security of lifting switch cabinet.

Specific technical solution is as follows：

Device body inside a kind of semi-enclosed structure voltage mutual inductor, including iron core, first winding and secondary winding, the iron The rectangular mount structure of core, the secondary winding are wound on iron core, and the first winding is divided to two sections to be sleeved in secondary winding, once around It is bonded together between group and secondary winding by epoxy resin layer；

The first winding and secondary winding are cylinder, and the cylindrical axis that both is in is straight for same Line；

2 symmetrically arranged connection inserting parts are led to via conducting wire in described point two sections of first winding, it is described to lead Line is coated with glass fiber binding strap, and the lower end of the glass fiber binding strap is adhesively fixed with first winding to be connected, and glass fiber is tied up The upper end of band is fixed with the snap-gauge gripped with it；

Be coated with PMP composite membranes outside the first winding and secondary winding, be coated on the outer surface of the iron core to Few 2 strata membrane of lipoprotein, the mylar are wound with insulating tape outside.

Device body inside a kind of above-mentioned semi-enclosed structure voltage mutual inductor, wherein, the axis of the conducting wire is through once The cylindrical center that winding and secondary winding are in.

Device body inside a kind of above-mentioned semi-enclosed structure voltage mutual inductor, wherein, the both sides of the iron core are equipped with iron Core limited block, the iron core limited block include casing and limiting plate, and described sleeve pipe is sleeved on iron core, and are interference fitted with iron core, The limiting plate is vertical with casing, and protrusion and bushing outer surface.

Device body inside a kind of above-mentioned semi-enclosed structure voltage mutual inductor, wherein, the section of the limiting plate is L-shaped, Including the first horizontal limiting plate and the second vertical limiting plate, the upper table of the second limiting plate protrusion and the first limiting plate Face.

Device body inside a kind of above-mentioned semi-enclosed structure voltage mutual inductor, wherein, the lower end of second limiting plate Face is equipped with multiple parallel fixture blocks set at equal intervals.

The beneficial effects of the utility model are：

The utility model proposes a kind of semi-enclosed structure voltage mutual inductor inside device body, including iron core, first winding And secondary winding, first winding draws a connection inserting part via conducting wire, and passes through conducting wire and fixture block is suspended in designated position, iron At least 2 strata membrane of lipoprotein, and wind insulating tape are coated on the outer surface of core, while iron core limits position by iron core limited block It puts, the utility model is simple in structure, by the way that iron core, first winding position are limited, cast difficulty is greatly lowered, promotes voltage The production efficiency of mutual inductor, while first winding after pouring into a mould and secondary winding middle ware can be significantly dropped away from suitable and uniform Low power frequency breakdown and shelf depreciation, improve voltage transformer working performance.

Description of the drawings

Fig. 1 utility model diagrams.

Fig. 2 iron cores, first winding and secondary winding side view.

A-quadrant sectional view in Fig. 3 Fig. 1.

Fig. 4 voltage transformer schematic diagrames.

Specific embodiment

For the technical solution of the utility model is made to become apparent from clearly, below in conjunction with the accompanying drawings to the utility model into advance one Step description, any technical characteristic to technical solutions of the utility model carry out the scheme that equivalencing is drawn with conventional reasoning and fall Enter scope of protection of the utility model.

Device body inside a kind of semi-enclosed structure voltage mutual inductor, including iron core 1, first winding 2 and secondary winding 3, institute 1 rectangular mount structure of iron core is stated, the secondary winding 3 is wound on iron core 1, and the first winding 2 is divided to two sections to be sleeved on secondary winding On 3, bonded together between first winding 2 and secondary winding 3 by epoxy resin layer 4；

The first winding 2 and secondary winding 3 are cylinder, and the cylindrical axis that both is in is straight for same Line；

2 symmetrically arranged connection inserting parts 6 are led to via conducting wire 5 in described point two sections of first winding 2, it is described Conducting wire 5 is coated with glass fiber binding strap 7, and the lower end of the glass fiber binding strap 7 is adhesively fixed with first winding 2 to be connected, glass The upper end of glass silk binding strap 7 is fixed with the snap-gauge 8 gripped with it；

PMP composite membranes are coated with outside the first winding 2 and secondary winding 3, are coated on the outer surface of the iron core 1 At least 2 strata membrane of lipoprotein 9, the mylar 9 are wound with insulating tape 10 outside.

Device body inside a kind of above-mentioned semi-enclosed structure voltage mutual inductor, wherein, the axis of the conducting wire 5 is through once The cylindrical center that winding 2 and secondary winding 3 are in.

Device body inside a kind of above-mentioned semi-enclosed structure voltage mutual inductor, wherein, the both sides of the iron core 1 are equipped with iron Core limited block 11, the iron core limited block 11 include casing 12 and limiting plate 13, and described sleeve pipe 12 is sleeved on iron core 1, and and iron Core 1 is interference fitted, and the limiting plate 13 is vertical with casing 12, and is protruded and 12 outer surface of casing.

Device body inside a kind of above-mentioned semi-enclosed structure voltage mutual inductor, wherein, the section of the limiting plate 13 is in L Type, including the first horizontal limiting plate 131 and the second vertical limiting plate 132, the protrusion of the second limiting plate 132 and the first limit The upper surface of position plate 131.

Device body inside a kind of above-mentioned semi-enclosed structure voltage mutual inductor, wherein, under first limiting plate 131 End face is equipped with multiple parallel fixture blocks 14 set at equal intervals.

In the present embodiment, as iron core, first winding and the secondary winding of device body component inside voltage transformer, installation Mode and old-fashioned second pouring mode there are conducting wire outer wrapping glass fiber binding straps that are different, being connected with a connection inserting part, Glass fiber binding strap is firm, can will be suspended in designated position, iron core is then by iron core limited block and electricity by snap-gauge by first winding The insulation shell limitation clamping of mutual inductor is pressed, the position of iron core, first winding and secondary winding is stablized at this time, is then directly used Mixture of epoxy resins, cast are integrated；Automatically form epoxy resin layer between first winding and secondary winding simultaneously, and by two Person is bonded.

Claims

1. device body inside a kind of semi-enclosed structure voltage mutual inductor, including iron core, first winding and secondary winding, the iron core Rectangular mount structure, the secondary winding are wound on iron core, and the first winding is divided to two sections to be sleeved in secondary winding, first winding It is bonded together between secondary winding by epoxy resin layer；

The first winding and secondary winding are cylinder, and the cylindrical axis that both is in is same straight line；

2 symmetrically arranged connection inserting parts are led to via conducting wire, in described point two sections of first winding outside the conducting wire Glass fiber binding strap is coated with, the lower end of the glass fiber binding strap is adhesively fixed with first winding to be connected, glass fiber binding strap Upper end be fixed with the snap-gauge gripped with it；

PMP composite membranes are coated with outside the first winding and secondary winding, at least 2 layers are coated on the outer surface of the iron core Mylar, the mylar are wound with insulating tape outside.

2. device body inside a kind of semi-enclosed structure voltage mutual inductor as described in claim 1, which is characterized in that the conducting wire The cylindrical center that axis is in through first winding and secondary winding.

3. device body inside a kind of semi-enclosed structure voltage mutual inductor as described in claim 1, which is characterized in that the iron core Both sides are equipped with iron core limited block, and the iron core limited block includes casing and limiting plate, and described sleeve pipe is sleeved on iron core, and and iron Core is interference fitted, and the limiting plate is vertical with casing, and protrusion and bushing outer surface.

A kind of 4. device body inside semi-enclosed structure voltage mutual inductor as claimed in claim 3, which is characterized in that the limiting plate Section it is L-shaped, including the first horizontal limiting plate and the second vertical limiting plate, the second limiting plate protrusion and the first limit The upper surface of position plate.

A kind of 5. device body inside semi-enclosed structure voltage mutual inductor as claimed in claim 4, which is characterized in that second limit The lower face of position plate is equipped with multiple parallel fixture blocks set at equal intervals.