CN107799290A - Voltage transformer low pressure screening arrangement and preparation method thereof - Google Patents
Voltage transformer low pressure screening arrangement and preparation method thereof Download PDFInfo
- Publication number
- CN107799290A CN107799290A CN201711258626.2A CN201711258626A CN107799290A CN 107799290 A CN107799290 A CN 107799290A CN 201711258626 A CN201711258626 A CN 201711258626A CN 107799290 A CN107799290 A CN 107799290A
- Authority
- CN
- China
- Prior art keywords
- voltage transformer
- low pressure
- wire cloth
- woven wire
- welded
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F38/00—Adaptations of transformers or inductances for specific applications or functions
- H01F38/20—Instruments transformers
- H01F38/22—Instruments transformers for single phase ac
- H01F38/24—Voltage transformers
- H01F38/26—Constructions
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/34—Special means for preventing or reducing unwanted electric or magnetic effects, e.g. no-load losses, reactive currents, harmonics, oscillations, leakage fields
- H01F27/36—Electric or magnetic shields or screens
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Investigating Or Analyzing Materials By The Use Of Magnetic Means (AREA)
Abstract
The invention belongs to voltage transformer manufacture technology field, more particularly to a kind of voltage transformer low pressure screening arrangement and preparation method thereof.Described device, including woven wire cloth, wire, metal reinforcing and embedded nut, wherein woven wire cloth has the specification shape adaptable with voltage transformer and coil device body contour, the lower end of woven wire cloth is connected with multiple embedded nuts by wire, and metal wire knitted is welded with metal reinforcing on the net.After voltage transformer coil device body is fixed on mould, it is fixed on using definite shape wire establishment net between coil device body and mould inner surface, adjusts the formula structure that poured into an integrated entity after matched moulds.Apparatus of the present invention are simple in construction, and integral production method is simple to operate, and low pressure shielding processing can be improved into operating efficiency by being carried out before cast is changed into after pouring into a mould.
Description
Technical field
The invention belongs to voltage transformer manufacture technology field, more particularly to a kind of voltage transformer low pressure screening arrangement and
Its preparation method.
Background technology
The shielding of voltage transformer low pressure makes current transformer industry institute generally using in transformer surface spraying one
Layer semiconductive varnish mode, in the knowhow of China for many years, with the continuous development of technological equipment industry, shield manufacture craft
Also constantly it is being gradually improved, compared to more ripe one layer of semiconductive varnish of transformer surface spraying, alone semiconductive varnish still has its work
In place of skill imperfection, i.e. semiconductive varnish spraying is uneven, and outward appearance is coarse, is mainly manifested in transformer surface easy damaged part band
Electricity, dare not directly it touch.
The content of the invention
Uneven in order to solve the semiconductive varnish spraying of existing voltage transformer surface, outward appearance is coarse, and surface easy damaged office
Portion is powered, the defects of dare not directly touching, it is an object of the invention to provide a kind of voltage transformer low pressure screening arrangement and its
Preparation method.
To achieve these goals, the present invention uses following technical scheme：
A kind of voltage transformer low pressure screening arrangement, including woven wire cloth, wire, embedded nut and metal are strengthened
Muscle, wherein woven wire cloth have the specification shape adaptable with voltage transformer and coil device body contour, the wire
The lower end of mesh grid is connected with multiple embedded nuts by wire, and the metal wire knitted is welded with metal reinforcing on the net.
The metal wire knitted is welded with multiple metal reinforcings on the net.
The metal reinforcing that the metal wire knitted is welded on the net is arranged in a vertical direction.
The wire is connected with the embedded nut by way of welding.
A kind of preparation method of voltage transformer low pressure screening arrangement, methods described include following steps：
1) woven wire cloth, wire and metal reinforcing are cut into the size of needs；
2) by metal reinforcing and woven wire cloth spot welded together；
3) the wire establishment net that point is welded to metal reinforcing with mould again is squeezed into and voltage transformer and line
Enclose the adaptable specification shape of device body contour；
4) welded in the lower end of the woven wire cloth with specification shape by wire and embedded nut, form low pressure
Shielding；
5) mould on, after the coil device body of voltage transformer is fixed on mould, being bolted embedded nut will be low
Pressure shielding is fixed between the coil device body and mould inner surface；
6) matched moulds pours into an integrated entity formula structure.
In step 2), the metal reinforcing that the metal wire knitted is welded on the net is arranged in a vertical direction.
In step 4), multiple embedded nuts are welded with the lower end of the woven wire cloth with specification shape.
The invention has the advantages that and advantage：
1st, apparatus of the present invention and preparation method thereof are easy to operate, production efficiency is high：This method is produced in voltage transformer
A kind of mature technology innovation on the basis of manufacture, i.e., after voltage transformer coil device body is fixed on mould, using definite shape
Wire establishment net is fixed between coil device body and mould inner surface, is adjusted and is poured into a mould after matched moulds, integrated artistic
Scheme is simple to operate, and low pressure shielding processing can be improved into operating efficiency by being carried out before cast is changed into after pouring into a mould.
2nd, apparatus of the present invention and preparation method thereof make product surface tangible, and partial discharge quantity is small：It is low coil is additional
Press shielding can effective grounding, product surface voltage ensure that voltage transformer primary winding high voltage electric field shields close to zero
Within wire establishment net, product surface is tangible, and personnel safety factor is high, and product partial discharge quantity is small, so that it is guaranteed that
Product being capable of safe operation.
Brief description of the drawings
Fig. 1 is the structural representation of low pressure screening arrangement of the present invention；
Fig. 2 is Fig. 1 side view.
Fig. 3 is the installation diagram of low pressure screening arrangement of the present invention.
In figure：1 is woven wire cloth；2 be wire, and 3 be embedded nut, and 4 be metal reinforcing, and 5 be coil device body,
6 be mould, and 7 be specification shape, and 8 be mould inner surface, and 9 be that low pressure shields, and 10 be bolt.
Embodiment
In order that the object, technical solutions and advantages of the present invention are clearer, below in conjunction with the accompanying drawings with specific embodiment pair
The present invention is described in detail.
As shown in Figure 1-2, a kind of voltage transformer low pressure screening arrangement provided by the invention, including woven wire cloth 1,
Wire 2, embedded nut 3 and metal reinforcing 4, wherein woven wire cloth 1 have with outside voltage transformer and coil device body
The adaptable specification shape 7 of shape, the lower end of woven wire cloth 1 is connected with multiple embedded nuts 3 by wire 2.
Further, the both sides of woven wire cloth 1 are welded with multiple metal reinforcings 4.
In one embodiment of the invention, the both sides of woven wire cloth 1 are welded with two gold vertically set
Belong to reinforcement 4, two metal reinforcings 4 are located at the front-end and back-end of the side respectively.The bottom of woven wire cloth 1 passes through four
Wire 2 is respectively welded four embedded nuts 3.
A kind of preparation method of voltage transformer low pressure screening arrangement, as shown in figure 3, this method includes following step
Suddenly：
1) woven wire cloth 1, wire 2 and metal reinforcing 4 are cut into the size of needs；
2) by metal reinforcing 4 and the spot welded together of woven wire cloth 1；
3) the wire establishment net 1 that point is welded to metal reinforcing 4 with mould again is squeezed into and voltage transformer
The adaptable specification shape 7 of coil device body contour；
4) welded, formed by wire 2 and embedded nut 3 in the lower end of the woven wire cloth 1 with specification shape 7
Low pressure shielding 9；
5) mould on, after the coil device body of voltage transformer is fixed on mould, embedded nut 3 is fixed by bolt 10,
Low pressure shielding 9 is fixed between coil device body and mould inner surface, adjust distance；
6) matched moulds pours into an integrated entity formula structure.
Further, in step 2, two metal reinforcings being parallel to each other 4 are welded with woven wire cloth 1.
Further, in step 4, connected in the lower end of the woven wire cloth 1 with specification shape 7 by wire 2
It is connected to four embedded nuts 3.
Design principle of the present invention is as follows：
Existing process shielding is sprayed on product surface only with semiconductive varnish and shielded, and certainly will unavoidably spray inequality
Even, outward appearance is coarse, and surface easy damaged is locally powered, the defects of dare not directly touching.In order to improve the reliable tangible effect of shielding
Fruit, low pressure screening arrangement of the present invention and preparation method thereof is the novel process for following transformer production principle and relevant criterion design
Scheme, electromagnetic induction principle is taken into full account, utilize special low pressure shield effectiveness when die-filling, by voltage transformer manufacturing process
In, special low pressure shielding preparation method is added between coil device body and mould inner surface, ensure that voltage transformer primary line
Circle high voltage electric field is shielded within wire establishment net, is implemented protective effect to insulation, is made product surface voltage close to zero,
Product surface is tangible, and product partial discharge quantity is small, so that it is guaranteed that product can safe operation, be transformer batch micro operations and matter
Amount control provides favourable guarantee.
Embodiments of the present invention are the foregoing is only, are not intended to limit the scope of the present invention.It is all in the present invention
Spirit and principle within made any modification, equivalent substitution and improvements, extension etc., be all contained in protection scope of the present invention
It is interior.
Claims (7)
1. a kind of voltage transformer low pressure screening arrangement, it is characterised in that including woven wire cloth (1), wire (2), embedding
Loading nut (3) and metal reinforcing (4), wherein woven wire cloth (1) have and voltage transformer and coil device body contour phase
The specification shape (7) of adaptation, the lower end of the woven wire cloth (1) are connected with multiple embedded nuts by wire (2)
(3), it is welded with metal reinforcing (4) on the woven wire cloth (1).
2. voltage transformer low pressure screening arrangement according to claim 1, it is characterised in that the woven wire cloth
(1) multiple metal reinforcings (4) are welded with.
3. voltage transformer low pressure screening arrangement according to claim 2, it is characterised in that the woven wire cloth
(1) metal reinforcing (4) welded on is arranged in a vertical direction.
4. voltage transformer low pressure screening arrangement according to claim 1, it is characterised in that the wire (2) and institute
Embedded nut (3) is stated to connect by way of welding.
5. a kind of preparation method according to any one of the claim 1-4 voltage transformer low pressure screening arrangements, its feature exists
In methods described includes following steps：
1) woven wire cloth (1), wire (2) and metal reinforcing (4) are cut into the size of needs；
2) by metal reinforcing (4) and woven wire cloth (1) spot welded together；
3) again with mould by point weld metal reinforcing (4) wire work out net (1) be squeezed into voltage transformer and
The adaptable specification shape (7) of coil device body contour；
4) welded in the lower end of the woven wire cloth (1) with specification shape (7) by wire (2) and embedded nut (3),
Form low pressure shielding (9)；
5) mould on, will by the fixed embedded nut (3) of bolt (10) after the coil device body of voltage transformer is fixed on mould
Low pressure shielding (9) is fixed between the coil device body and mould inner surface；
6) matched moulds pours into an integrated entity formula structure.
6. according to the method for claim 5, it is characterised in that in step 2), welded on the woven wire cloth (1)
Metal reinforcing (4) be arranged in a vertical direction.
7. according to the method for claim 5, it is characterised in that in step 4), in the gold with specification shape (7)
The lower end of category silk mesh grid (1) is welded with multiple embedded nuts (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711258626.2A CN107799290A (en) | 2017-12-04 | 2017-12-04 | Voltage transformer low pressure screening arrangement and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711258626.2A CN107799290A (en) | 2017-12-04 | 2017-12-04 | Voltage transformer low pressure screening arrangement and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107799290A true CN107799290A (en) | 2018-03-13 |
Family
ID=61538324
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711258626.2A Pending CN107799290A (en) | 2017-12-04 | 2017-12-04 | Voltage transformer low pressure screening arrangement and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107799290A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109346302A (en) * | 2018-12-03 | 2019-02-15 | 大连北方互感器集团有限公司 | A kind of voltage transformer shielded with high-tension shielding and low pressure |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007142339A (en) * | 2005-11-22 | 2007-06-07 | Otowa Denki Kogyo Kk | Thunder resistance reinforcing type insulation transformer for low voltage |
| CN101728074A (en) * | 2008-10-23 | 2010-06-09 | 天津市百利纽泰克电气科技有限公司 | Wrapping technical method for primary shield of bus-type current transformer |
| CN201549361U (en) * | 2009-11-25 | 2010-08-11 | 大连北方互感器集团有限公司 | Metal shielded extension-type current transformer at outlet of generator |
| CN202172009U (en) * | 2011-08-09 | 2012-03-21 | 正泰电气股份有限公司 | Shielding device for contact box type current transformer |
| CN202585092U (en) * | 2012-05-09 | 2012-12-05 | 广东四会互感器厂有限公司 | shielding device for 10-35 kilovolt (kV) box-type current transformer with contacts |
| CN203397883U (en) * | 2013-08-06 | 2014-01-15 | 湖南大北互互感器有限公司 | Electromagnetic voltage transformer of intra-user single-phase built-in fuse |
| CN107424813A (en) * | 2017-05-16 | 2017-12-01 | 大连第二互感器集团有限公司 | Solve the outer net cage of railway and become the voltage transformer and method for using voltage transformer shelf depreciation |
-
2017
- 2017-12-04 CN CN201711258626.2A patent/CN107799290A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007142339A (en) * | 2005-11-22 | 2007-06-07 | Otowa Denki Kogyo Kk | Thunder resistance reinforcing type insulation transformer for low voltage |
| CN101728074A (en) * | 2008-10-23 | 2010-06-09 | 天津市百利纽泰克电气科技有限公司 | Wrapping technical method for primary shield of bus-type current transformer |
| CN201549361U (en) * | 2009-11-25 | 2010-08-11 | 大连北方互感器集团有限公司 | Metal shielded extension-type current transformer at outlet of generator |
| CN202172009U (en) * | 2011-08-09 | 2012-03-21 | 正泰电气股份有限公司 | Shielding device for contact box type current transformer |
| CN202585092U (en) * | 2012-05-09 | 2012-12-05 | 广东四会互感器厂有限公司 | shielding device for 10-35 kilovolt (kV) box-type current transformer with contacts |
| CN203397883U (en) * | 2013-08-06 | 2014-01-15 | 湖南大北互互感器有限公司 | Electromagnetic voltage transformer of intra-user single-phase built-in fuse |
| CN107424813A (en) * | 2017-05-16 | 2017-12-01 | 大连第二互感器集团有限公司 | Solve the outer net cage of railway and become the voltage transformer and method for using voltage transformer shelf depreciation |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109346302A (en) * | 2018-12-03 | 2019-02-15 | 大连北方互感器集团有限公司 | A kind of voltage transformer shielded with high-tension shielding and low pressure |
| CN109346302B (en) * | 2018-12-03 | 2023-08-08 | 大连北方互感器集团有限公司 | Voltage transformer with high-voltage shielding and low-voltage shielding |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN204066991U (en) | Power transformer disc coil new construction | |
| CN107799290A (en) | Voltage transformer low pressure screening arrangement and preparation method thereof | |
| CN109767897A (en) | Voltage transformer coil first winding and its winding method | |
| CN105632714B (en) | A kind of compound amorphous transformer core | |
| CN208173350U (en) | A kind of zero sequence current mutual inductor | |
| CN108461266A (en) | A kind of current transformer with low pressure shielding | |
| CN202028854U (en) | Arc striking device of TIG (Tungsten Inert Gas) welding and ion cutting machine | |
| CN205050691U (en) | Take shield cover isolation transformer | |
| CN101093748B (en) | Contrable combination type reactor | |
| CN103913651B (en) | Lightning protection test method for inner-side grounded down-leading composite material tower | |
| CN104282407A (en) | Ferrite core and high-frequency transformer | |
| CN205828070U (en) | A kind of Novel dry type hollow electric reactor | |
| CN202695120U (en) | Armored shielded high-voltage test transformer | |
| CN210878303U (en) | Liftable induction heating coil's intelligent welding mutual-inductor copper class spare equipment | |
| CN204866144U (en) | Breaker protection casing | |
| CN108335872A (en) | A kind of voltage transformer coil first winding and its winding method | |
| CN204867065U (en) | Mold processing of no deckle edge inductance structure | |
| CN207913929U (en) | Pears formula founding sand cutter | |
| CN203675361U (en) | Electrode guiding device of ore-smelting electric furnace | |
| CN206401159U (en) | The shielding construction of dry-type transformer | |
| CN204117775U (en) | The assembled magnetic core of a kind of rail type | |
| CN213635664U (en) | Dry-type does not have partial discharge compensation reactor for experiment | |
| CN204270769U (en) | FERRITE CORE and high frequency transformer | |
| CN205472255U (en) | Wind power tower cylinder lifts and hangs compensating beam | |
| CN205194484U (en) | Adjustable dry -type parallel reactor unshakable in one's determination |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20180313 |
|
| RJ01 | Rejection of invention patent application after publication |