CN101593619B - Vertical current transformer - Google Patents
Vertical current transformer Download PDFInfo
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- CN101593619B CN101593619B CN200810122544XA CN200810122544A CN101593619B CN 101593619 B CN101593619 B CN 101593619B CN 200810122544X A CN200810122544X A CN 200810122544XA CN 200810122544 A CN200810122544 A CN 200810122544A CN 101593619 B CN101593619 B CN 101593619B
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- tank shell
- fuel tank
- secondary winding
- current transformer
- oil tank
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Abstract
The invention relates to a vertical current transformer, comprising an expander, a primary conducting bar, an insulating medium, an oil tank shell, an earth stud, a secondary winding, an oil relieve valve, and the like; the oil tank shell is thereon fixedly provided with an oil tank upper cover in a sealing way, the primary conducting bar is arranged on an oil conservator and is connected with the secondary winding by a conducting rod, the oil tank shell is thereon provided with the oil relieve valve and is connected with the earth stud, a sealing cavity formed by the oil conservator, a sleeve and the oil tank shell is internally provided with the insulating medium, and the shape of an inner cavity of the oil tank shell is designed to be similar to the shape of the secondary winding; the oil tank shell is designed to be a one time tensile shape which is similar to the shape of a primary winding and the secondary winding, so that the electric field is uniformly distributed; an earth wire is arranged at the lower end of the oil tank shell, so that the length of the earth wire bank is reduced; the secondary winding and the oil tank shell are arranged below the whole, so that the centre of gravity is downward and the stability is improved; as the insulating medium is added with a solid filler, the insulating property is improved.
Description
Technical field
The present invention relates to a kind of current transformer that power industry is used, a kind of specifically vertical current transformer.
Background technology
Through the relevant patent documentation of retrieval, do not retrieve a kind of vertical current transformer identical at present as yet with structure of the present invention.Existing current transformer mainly contains two kinds of versions: oil-immersed current transformer and sulfur hexafluoride current mutual inductor.From structure inversion type structure current transformer and vertical current transformer are arranged.Inversed current transformer is because structural reason, and its secondary winding and housing are arranged on the top of sleeve pipe, center of gravity at an upper portion thereof, structure is stable inadequately.Existing vertical current transformer is because its structural reason; Its shell is generally taked the structure of welded type; Make non-uniform electric; Welding ends is easy to generate reasons such as point discharge in addition, thus influenced the result of use of current transformer, so be necessary to develop new current transformer to satisfy actual requirement.
Summary of the invention
The objective of the invention is to provide a kind of Electric Field Distribution even, a kind of vertical current transformer of result of use, good insulation preformance.
Technical characterictic of the present invention is: consider Electric Field Distribution evenly, be designed to comprise expander, oil conservator, primary conductive row, sleeve pipe, dielectric, a kind of vertical current transformer of hoop, fuel tank shell, outlet box, earth stud, secondary winding, fuel outlet valve, fuel tank loam cake down on the basis of well more stable, the good insulation preformance of result of use; Sealing is fixed with the fuel tank loam cake on fuel tank shell, on fuel tank, covers sealing and is fixed with hoop down, and following hoop is provided with sleeve pipe; On sleeve pipe, be connected with oil conservator; On oil conservator, be provided with expander, described primary conductive row is arranged on the oil conservator, and is connected with secondary winding through conducting rod; Described outlet box links to each other with fuel tank shell; Outlet box links up with secondary winding mutually, on fuel tank shell, is provided with fuel outlet valve, on fuel tank shell, is provided with earth stud; In the closed cavity that oil conservator, sleeve pipe, fuel tank shell form, be provided with dielectric, the inner chamber of described fuel tank shell is the housing similar with the secondary winding shape.
Described dielectric is insulating oil, the mutually compound dielectric of solid filler.
Solid filler in the described dielectric can be in glass sand, glass marble, the electrical insulating material one or more compound wherein.
Solid filler in the described dielectric is the spherical particle of diameter at φ 5mm～φ 20mm.
Described fuel outlet valve is made up of valve seat, sealing ring I, end face seal I, sealing ring II, back-up ring, end face seal II, spool, sealing cap, bonnet, and described valve seat is packed on the fuel tank shell, and seals through sealing ring I; Spool is arranged in the valve seat, and seals through end-face seal ring I, on spool, is provided with sealing ring II; Jump ring back-up ring in the inner chamber of valve seat, being provided with; Bonnet is connected with valve seat, and seals through end face seal II, on spool, is provided with sealing cap.
During use; Vertical current transformer is installed in the appropriate location, and primary conductive row be connected with high-tension circuit, through the secondary winding electromagnetic induction; The electric current of on secondary winding, responding to joins through outlet box and outside, line information is passed to devices such as detection, instrument, metering, control.Earth stud on the fuel tank shell be connected on fuel tank shell below, promptly reduced the length of earth wire bank.Add people's solid filler in the insulating oil, its objective is the reinforced insulation dielectric behavior, center of gravity is provided with downwards.
Advantage of the present invention is: because fuel tank shell is designed to the shape of disposable stretching, and similar with the shape of first and second winding, thus make Electric Field Distribution even, reduced point discharge; Because earth connection is arranged on the lower end of fuel tank shell, thereby has reduced the length of earth wire bank, makes easy-to-connect, product safety is attractive in appearance; Since secondary winding, fuel tank shell be arranged on whole below, thereby make down-shift of working center, improved the stability of product, strengthened wind resistance; Because fuel outlet valve is designed to have the version of valve core, and is provided with the oilhole of vertical and radial direction in valve core, thereby make safety when draining the oil, convenience, avoided the outflow of solid filler, make the dependable performance of draining the oil simultaneously; Owing to added solid filler in the dielectric, thereby insulation property improved, and made whole down-shift of working center, thereby improved the stability of product; So owing to rational in infrastructure, dependable performance, attractive in appearance very big practical and popularizing value arranged.
Description of drawings
Below with the accompanying drawings embodiments of the invention:
Accompanying drawing 1 is the structural representation of a kind of vertical current transformer of the present invention;
Accompanying drawing 2 is structural representations of a kind of fuel tank shell of vertical current transformer;
Accompanying drawing 3 are accompanying drawing 2A to structural representation;
Accompanying drawing 4 are accompanying drawing 2B to structural representation;
Accompanying drawing 5 is structural representations of a kind of fuel outlet valve of vertical current transformer.
Embodiment
With reference to accompanying drawing 1, accompanying drawing 2, accompanying drawing 3, accompanying drawing 4, a kind of vertical current transformer of the present invention comprises expander 1, oil conservator 2, primary conductive row 3, sleeve pipe 4, dielectric 5, following hoop 6, fuel tank shell 7, outlet box 8, earth stud 9, secondary winding 10, fuel outlet valve 11, fuel tank loam cake 12; Sealing is fixed with fuel tank loam cake 12 on fuel tank shell 7; Sealing is fixed with hoop 6 down on fuel tank loam cake 12, and following hoop 6 is provided with sleeve pipe 4, on sleeve pipe 4, is connected with oil conservator 2; On oil conservator 2, be provided with expander 1; Primary conductive row 3 is arranged on the oil conservator 2, and is connected with secondary winding 10 through conducting rod, and described outlet box 8 links to each other with fuel tank shell 7; Outlet box 8 links up with secondary winding 10 mutually; On fuel tank shell 7, be provided with fuel outlet valve 11, on fuel tank shell 7, be provided with earth stud 9, in the closed cavity that oil conservator 2, sleeve pipe 4, fuel tank shell 7 form, be provided with dielectric 5; Described dielectric 5 is insulating oil, the mutually compound dielectric of solid filler; Solid filler in the described dielectric 5 can be in glass sand, glass marble, the electrical insulating material one or more compound wherein, and the solid filler in the described dielectric 5 is the spherical particle of diameter at φ 5mm～φ 20mm, and the solid filler of present embodiment is the glass marble of φ 8mm～φ 18mm.The inner chamber of described fuel tank shell 7 is and the similar housing of secondary winding 10 shapes.
With reference to accompanying drawing 5; The fuel outlet valve 11 of a kind of vertical current transformer of the present invention is made up of valve seat 111, sealing ring I112, end face seal I113, sealing ring II114, back-up ring 115, end face seal II116, spool 117, sealing cap 118, bonnet 119; Described valve seat 111 is packed on the fuel tank shell 7, and seals through sealing ring I112, and spool 117 is arranged in the valve seat 111; And seal through end-face seal ring I113; On spool 117, be provided with sealing ring II114, jump ring back-up ring 115 in the inner chamber of valve seat 111, being provided with, bonnet 119 is connected with valve seat 111; And seal through end face seal II116, on spool 117, be provided with sealing cap 118.
Claims (5)
1. vertical current transformer; Comprise expander (1), oil conservator (2), primary conductive row (3), sleeve pipe (4), dielectric (5), following hoop (6), fuel tank shell (7), outlet box (8), earth stud (9), secondary winding (10), fuel outlet valve (11), fuel tank loam cake (12); Go up sealing at fuel tank shell (7) and be fixed with fuel tank loam cake (12), go up sealing at fuel tank loam cake (12) and be fixed with hoop (6) down, following hoop (6) is provided with sleeve pipe (4); On sleeve pipe (4), be connected with oil conservator (2); On oil conservator (2), be provided with expander (1), described primary conductive row (3) is arranged on the oil conservator (2), and is connected with secondary winding (10) through conducting rod; Described outlet box (8) links to each other with fuel tank shell (7); Outlet box (8) links up with secondary winding (10) mutually, on fuel tank shell (7), is provided with fuel outlet valve (11), it is characterized in that: on fuel tank shell (7), be provided with earth stud (9); In the closed cavity that oil conservator (2), sleeve pipe (4), fuel tank shell (7) form, be provided with dielectric (5), the inner chamber of described fuel tank shell (7) is and the similar housing of secondary winding (10) shape.
2. a kind of vertical current transformer according to claim 1 is characterized in that: described dielectric (5) is insulating oil, the mutually compound dielectric of solid filler.
3. a kind of vertical current transformer according to claim 1 and 2 is characterized in that: the solid filler in the described dielectric (5) can be in glass sand, the glass marble one or both compound wherein.
4. a kind of vertical current transformer according to claim 1 and 2 is characterized in that: the solid filler in the described dielectric (5) is the spherical particle of diameter at φ 5mm～φ 20mm.
5. a kind of vertical current transformer according to claim 1; It is characterized in that: described fuel outlet valve (11) is made up of valve seat (111), sealing ring I (112), end face seal I (113), sealing ring II (114), back-up ring (115), end face seal II (116), spool (117), sealing cap (118), bonnet (119); Described valve seat (111) is packed on the fuel tank shell (7), and seals through sealing ring I (112), and spool (117) is arranged in the valve seat (111); And seal through end-face seal ring I (113); On spool (117), be provided with sealing ring II (114), jump ring back-up ring (115) in the inner chamber of valve seat (111), being provided with, bonnet (119) is connected with valve seat (111); And seal through end face seal II (116), on spool (117), be provided with sealing cap (118).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810122544XA CN101593619B (en) | 2008-06-01 | 2008-06-01 | Vertical current transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810122544XA CN101593619B (en) | 2008-06-01 | 2008-06-01 | Vertical current transformer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101593619A CN101593619A (en) | 2009-12-02 |
| CN101593619B true CN101593619B (en) | 2012-05-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200810122544XA Active CN101593619B (en) | 2008-06-01 | 2008-06-01 | Vertical current transformer |
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| Country | Link |
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| CN (1) | CN101593619B (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102360890B (en) * | 2011-10-25 | 2013-01-16 | 保定天威集团有限公司 | Current transformer with one-circle primary winding |
| CN102360897A (en) * | 2011-10-25 | 2012-02-22 | 保定天威集团有限公司 | High-current transformer |
| CN105244158A (en) * | 2015-10-21 | 2016-01-13 | 成都迅德科技有限公司 | Current transformer |
| CN105448509A (en) * | 2015-12-03 | 2016-03-30 | 成都格瑞思文化传播有限公司 | High-voltage current transformer |
| CN110836994A (en) * | 2018-08-15 | 2020-02-25 | 大连北方互感器集团有限公司 | All-insulation type capacitor voltage transformer |
| CN111856379B (en) * | 2020-06-24 | 2022-10-04 | 内蒙古电力(集团)有限责任公司内蒙古电力科学研究院分公司 | Monitoring system of current transformer operating characteristic simulation test platform in low-temperature environment |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4060759A (en) * | 1974-10-18 | 1977-11-29 | Oy Stromberg Ab | Tube-insulated shell-core current transformer |
| CN2604766Y (en) * | 2003-03-20 | 2004-02-25 | 孙闻峰 | Dry high-voltage current transformer |
| CN201315242Y (en) * | 2008-06-01 | 2009-09-23 | 江苏思源赫兹互感器有限公司 | Vertical-type current transformer |
-
2008
- 2008-06-01 CN CN200810122544XA patent/CN101593619B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4060759A (en) * | 1974-10-18 | 1977-11-29 | Oy Stromberg Ab | Tube-insulated shell-core current transformer |
| CN2604766Y (en) * | 2003-03-20 | 2004-02-25 | 孙闻峰 | Dry high-voltage current transformer |
| CN201315242Y (en) * | 2008-06-01 | 2009-09-23 | 江苏思源赫兹互感器有限公司 | Vertical-type current transformer |
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| Publication number | Publication date |
|---|---|
| CN101593619A (en) | 2009-12-02 |
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