CN1808646B - Oil-immerged inversed current transformer - Google Patents
Oil-immerged inversed current transformer Download PDFInfo
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- CN1808646B CN1808646B CN 200510038198 CN200510038198A CN1808646B CN 1808646 B CN1808646 B CN 1808646B CN 200510038198 CN200510038198 CN 200510038198 CN 200510038198 A CN200510038198 A CN 200510038198A CN 1808646 B CN1808646 B CN 1808646B
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- sleeve pipe
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Abstract
This invention relates to one oil dipped reversed current mutual-inductor, which comprises one conductor bar, shell, second coil set, cover tube, expansion device and oil valve, wherein, the conductor bar passes the inner shield; the second coil set stretches outside shell to form the device; the shell, cover tube, base socket form sealed part full of isolation oil; inner shield, second wire tube are covered with total isolation materials; the total isolation materials covering the inner shield and secondary wire for isolation.
Description
Technical field
The present invention relates to the current transformer that a kind of power industry is used, adopting insulating oil specifically is the inverted current transformer of dielectric.
Background technology
Relevant by retrieval patent documentation, not retrieving the employing insulating oil identical with structure of the present invention as yet at present is the oil-immerged inversed current transformer of dielectric.Existing high-tension current inductor mainly contains two kinds: oil-immersed current transformer and gas-filled type current transformer.Oil-immersed current transformer can be divided into just vertical, inverted again and three kinds of structures of combined type.Existing oil-immersed current transformer mainly contains following shortcoming: volume is big, quality is heavy, insulator is easy to damage, easy to leak, inflammable, explosive, antifouling property is poor, and maintenance workload is big.The gas-filled type current transformer generally is medium with the sulphur hexafluoride, adopt inverted structure, though comparing with oil-immersed current transformer, the gas-filled type current transformer has advantages such as in light weight, that volume is little, but also there is the gas easy to leak, maintenance workload is big, easily cause shortcomings such as environmental pollution, thus be necessary existing oil-immersed current transformer is improved, to improve the performance of product.
Summary of the invention
The objective of the invention is to provide a kind of improvement on existing current transformer, adopt insulating oil to hold and combine, have the better a kind of oil-immerged inversed current transformer of sealing property and insulation property with whole insulating material.
Technical characterictic of the present invention is: considering to be designed to comprise the primary conductive bar on sealing property and the better basis of insulation property, housing, secondary winding, binding post, sleeve pipe, shielding insulation, the secondary lead wires pipe, base, the secondary outlet box, expander, fuel outlet valve, inner shield, a kind of oil-immerged inversed current transformer of lead-in wire cage, the primary conductive bar passes inner shield, secondary winding is stretched out housing and is constituted current transformer, secondary winding is located in the inner shield, inner shield is arranged in the housing, secondary winding links to each other with the secondary lead wires pipe, be connected by adhesive seal between housing and the sleeve pipe, be connected by adhesive seal between the lower end of sleeve pipe and the base; Be provided with an expander on the top of housing, in the seal that housing, sleeve pipe, base form, be full of insulating oil; Periphery at inner shield, secondary lead wires pipe is surrounded with the shielding insulation that is made of whole insulating material; On base, be provided with a fuel outlet valve that is used to drain the oil; The lead-in wire cage is arranged on the bottom of sleeve pipe, and the lead-out wire of secondary lead wires pipe is sturdy.Described primary conductive bar is the structure of single turn or multiturn.Described housing adopts cast aluminium alloy or aluminium alloy to make, and the integral solder sealing is adopted in the junction of its upper and lower two halves housing, and housing lower half and sleeve pipe connection inner chamber are provided with several seal groove, and the end is provided with " O " shape sealing ring location notch.Between described housing and the sleeve pipe, sealing is adopted between the lower end of sleeve pipe and the base adhesive is the mixture of resin glue and quartz sand, cement.The colour planning of the full skirt of described sleeve pipe becomes milky or brown.Described base adopts cast aluminium to make, and itself and sleeve pipe connection inner chamber are provided with several seal groove.It is that material is made axial cross section V-arrangement saucer-like configuration that expansion oplate in the described expander adopts thin corrosion resistant plate.Described fuel outlet valve adopts the version of secondary seal.Described lead-in wire cage is made up of a pair of frid, and one of them frid is provided with a claw and a location notch that is used to locate; Another frid is provided with the self-locking draw-in groove and the card article that matches with location notch that match with claw, forms involutory structure.
During use, the binding post at primary conductive bar two ends is linked to each other with circuit, electric current flows through from the primary conductive bar, pass through electromagnetic induction, on secondary winding, induce electric current, reach the secondary connection terminal through the secondary lead wires pipe, line current information pass to detecting instrument, metering, control device.The periphery of inner shield, secondary lead wires pipe is surrounded with the shielding insulation that is made of whole insulating material, is full of insulating oil in housing and the sleeve pipe, its objective is that the insulation property that improve instrument transformer inside design.The integral solder sealing is adopted in the junction of the upper and lower two halves of housing, its objective is the raising sealing, housing is never leaked design.It is that material is made axial cross section V-arrangement saucer-like configuration that expansion oplate in the expander adopts thin corrosion resistant plate, makes expander be in the weakest link, and pressure washes out expansion oplate when breaking down, and has avoided bushing explosion.
Advantage of the present invention is: because the method that adopts whole insulating material coating inner shield, secondary winding and secondary lead wires Guan Bingyu insulating oil to engage insulate, thereby compare more insulation with existing dry-type current transformer, to compare performance better with existing oil-immersed current transformer, and volume is little; Owing to adopt whole insulating material to coat, avoided having improved Electric Field Distribution effectively along the creepage problem of face, improved discharge voltage, avoided traditional handicraft by the overlapping back phenomenon that thickness is big, radiating effect is bad that coats of strip insulating material; Because housing adopts cast aluminium alloy or aluminium alloy to make, the integral solder sealing is adopted in the junction of upper and lower two halves housing, has alleviated the weight of head, and the electric field that rationally distributed has prevented the generation of eddy current, has avoided leakage; Because housing, base are provided with several seal groove with sleeve pipe connection inner chamber, the end of housing also is provided with " O " shape sealing ring location notch, and the mixture of employing resin glue and quartz sand, cement is adhesive, thereby seals effectively; Because the top of housing is provided with an expander, has avoided the danger of bushing explosion; Because the colour planning of the full skirt of sleeve pipe becomes milky or brown, thereby more coordinates with other material color, integral body is more attractive in appearance; Owing on base, is provided with a fuel outlet valve that is used to drain the oil, and is designed to the version of secondary seal, thereby it is more convenient to change the extraction insulating oil under hermetic state, has reduced leakage; Because the lead-in wire cage is designed to a pair of axially plugging together and has the involutory trough plate of self-locking structure, thereby make the lead-out wire of secondary lead wires pipe install more convenient, more sturdy; Because have few oil, no gas, volume is little, in light weight, pollution flashover voltage is high, be convenient to characteristics such as installation, superior performance, so very big practical and popularizing value is arranged.
Description of drawings
Below with reference to the description of drawings embodiments of the invention:
Accompanying drawing 1 is the structural representation of a kind of oil-immerged inversed current transformer of the present invention;
Accompanying drawing 2 is structural representations of a kind of expander of oil-immerged inversed current transformer;
Accompanying drawing 3 is structural representations that a kind of fuel outlet valve of oil-immerged inversed current transformer amplifies;
Accompanying drawing 4 is the structural representations in cross section of a kind of lead-in wire cage of oil-immerged inversed current transformer.
Embodiment
With reference to accompanying drawing 1, oil-immerged inversed current transformer of the present invention comprises primary conductive bar 1, housing 2, secondary winding 3, binding post 4, sleeve pipe 5, shielding insulation 6, secondary lead wires pipe 7, base 8, secondary outlet box 9, expander 10, fuel outlet valve 11, inner shield 12, lead-in wire cage 13, and primary conductive bar 1 passes inner shield 12, secondary winding 3 is stretched out housing 2 and constituted current transformer.Described primary conductive bar 1 can be the structure of single turn or multiturn, and the primary conductive bar 1 of present embodiment is designed to two circles.The two ends of primary conductive bar 1 are fixed with two terminal 4a, 4b of binding post 4 respectively.Secondary winding 3 is located in the inner shield 12, and inner shield 12 is fixed in the housing 2, and secondary winding 3 links to each other with secondary lead wires pipe 7.Be surrounded with the shielding insulation 6 that constitutes by whole insulating material in the periphery of inner shield 12, secondary lead wires pipe 7.Housing 2 adopts cast aluminium alloy or aluminium alloy to make, the housing 2 of present embodiment adopts cast aluminium alloy to make, the junction 2a of its upper and lower two halves housing adopts the integral solder sealing, the housing lower half of housing 2 and sleeve pipe 5 connection inner chambers are provided with several seal groove 2b, and the mixture that injects resin glue and quartz sand, cement between its seal groove 2b and sleeve pipe 5 is connected and sealed.The housing lower half end of housing 2 is provided with " O " shape sealing ring location notch 2c.The lower end of sleeve pipe 5 is tightly connected mutually with base 8, and base 8 adopts cast aluminium to make, and itself and sleeve pipe 5 connection inner chambers are provided with several seal groove 8a, and the mixture that injects resin glue and quartz sand, cement between its seal groove 8a and sleeve pipe 5 is connected and sealed.The colour planning of the full skirt of sleeve pipe 5 becomes milky or brown, and the colour planning of the full skirt of the sleeve pipe 5 of present embodiment becomes milky.In the seal that housing 2, sleeve pipe 5, base 8 form, be full of insulating oil.Secondary outlet box 9 is packed on the base 8.The top of housing 2 is provided with an expander 10, is provided with a fuel outlet valve that is used to drain the oil 11 on base 8.Lead-in wire cage 13 is arranged on the bottom of sleeve pipe 5, and the lead-out wire of secondary lead wires pipe 7 is sturdy.
With reference to accompanying drawing 2, it is that material is made axial cross section V-arrangement saucer-like configuration that expansion oplate 10a in the expander 10 adopts thin corrosion resistant plate, between expansion oplate 10a and the shell by being welded.
With reference to accompanying drawing 3, fuel outlet valve 11 adopts the version of an one-way cock 11a and a plug cock 11b composition secondary seal.When draining the oil, plug cock 11b is opened in the breakdown lead sealing, pushes one-way cock 11a open with through rod, and fluid can flow out.
With reference to accompanying drawing 4, lead-in wire cage 13 is made up of frid 13a, frid 13b.Frid 13a is provided with a claw 13c and a location notch 13d who is used to locate; Frid 13b is provided with the self-locking draw-in groove 13e and the card article 13f who matches with location notch 13d that match with claw 13c, forms and axially plugs together involutory structure, and the lead-out wire of secondary lead wires pipe 7 is sturdy.
Claims (9)
1. an oil-immerged inversed current transformer comprises primary conductive bar (1), housing (2), secondary winding (3), binding post (4), sleeve pipe (5), shielding insulation (6), secondary lead wires pipe (7), base (8), secondary outlet box (9), expander (10), fuel outlet valve (11), inner shield (12), lead-in wire cage (13), primary conductive bar (1) passes inner shield (12), secondary winding (3) is stretched out housing (2) and is constituted current transformer, secondary winding (3) is located in the inner shield (12), inner shield (12) is arranged in the housing (2), secondary winding (3) links to each other with secondary lead wires pipe (7), it is characterized in that: be connected by adhesive seal between housing (2) and the sleeve pipe (5), be connected by adhesive seal between the lower end of sleeve pipe (5) and the base (8); Be provided with an expander (10) on the top of housing (2), in the seal that housing (2), sleeve pipe (5), base (8) form, be full of insulating oil; Be surrounded with the shielding insulation (6) that constitutes by whole insulating material in the periphery of inner shield (12), secondary lead wires pipe (7); On base (8), be provided with a fuel outlet valve that is used to drain the oil (11); Lead-in wire cage (13) is arranged on the bottom of sleeve pipe (5), and the lead-out wire of secondary lead wires pipe (7) is sturdy.
2. a kind of oil-immerged inversed current transformer according to claim 1 is characterized in that: described primary conductive bar (1) is the structure of single turn or multiturn.
3. a kind of oil-immerged inversed current transformer according to claim 1, it is characterized in that: described housing (2) adopts cast aluminium alloy or aluminium alloy to make, the integral solder sealing is adopted in the junction of its upper and lower two halves housing, housing lower half and sleeve pipe (5) connection inner chamber is provided with several seal groove, and the end is provided with " O " shape sealing ring location notch.
4. a kind of oil-immerged inversed current transformer according to claim 1 is characterized in that: between described housing (2) and the sleeve pipe (5), sealing is adopted between the lower end of sleeve pipe (5) and the base (8) adhesive is the mixture of resin glue and quartz sand, cement.
5. a kind of oil-immerged inversed current transformer according to claim 1 is characterized in that: the colour planning of the full skirt of described sleeve pipe (5) becomes milky or brown.
6. a kind of oil-immerged inversed current transformer according to claim 1 is characterized in that: described base (8) adopts cast aluminium to make, and itself and sleeve pipe (5) connection inner chamber are provided with several seal groove.
7. a kind of oil-immerged inversed current transformer according to claim 1 is characterized in that: it is that material is made axial cross section V-arrangement saucer-like configuration that the expansion oplate in the described expander (10) adopts thin corrosion resistant plate.
8. a kind of oil-immerged inversed current transformer according to claim 1 is characterized in that: described fuel outlet valve (11) adopts the version of secondary seal.
9. a kind of oil-immerged inversed current transformer according to claim 1 is characterized in that: described lead-in wire cage (13) is made up of a pair of frid, and one of them frid is provided with a claw and a location notch that is used to locate; Another frid is provided with the self-locking draw-in groove and the card article that matches with location notch that match with claw, forms involutory structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510038198 CN1808646B (en) | 2005-01-19 | 2005-01-19 | Oil-immerged inversed current transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510038198 CN1808646B (en) | 2005-01-19 | 2005-01-19 | Oil-immerged inversed current transformer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1808646A CN1808646A (en) | 2006-07-26 |
| CN1808646B true CN1808646B (en) | 2010-10-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200510038198 Active CN1808646B (en) | 2005-01-19 | 2005-01-19 | Oil-immerged inversed current transformer |
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| CN (1) | CN1808646B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102024557B (en) * | 2009-09-21 | 2015-09-16 | 江苏思源赫兹互感器有限公司 | Electronic current mutual inductor |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2074932U (en) * | 1990-06-08 | 1991-04-10 | 沈阳变压器厂 | Current mutual-inductor |
| CN2620360Y (en) * | 2003-02-26 | 2004-06-09 | 江苏精科互感器有限公司 | Oil paper standing upside down type high-voltage current transformer |
| CN2814638Y (en) * | 2005-01-19 | 2006-09-06 | 江苏思源赫兹互感器有限公司 | Oil immersed inverted current mutual inductor |
-
2005
- 2005-01-19 CN CN 200510038198 patent/CN1808646B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2074932U (en) * | 1990-06-08 | 1991-04-10 | 沈阳变压器厂 | Current mutual-inductor |
| CN2620360Y (en) * | 2003-02-26 | 2004-06-09 | 江苏精科互感器有限公司 | Oil paper standing upside down type high-voltage current transformer |
| CN2814638Y (en) * | 2005-01-19 | 2006-09-06 | 江苏思源赫兹互感器有限公司 | Oil immersed inverted current mutual inductor |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1808646A (en) | 2006-07-26 |
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