CN201298447Y - Novel sulfur hexafluoride gas insulation electronic mutual inductor - Google Patents
Novel sulfur hexafluoride gas insulation electronic mutual inductor Download PDFInfo
- Publication number
- CN201298447Y CN201298447Y CNU2008201593343U CN200820159334U CN201298447Y CN 201298447 Y CN201298447 Y CN 201298447Y CN U2008201593343 U CNU2008201593343 U CN U2008201593343U CN 200820159334 U CN200820159334 U CN 200820159334U CN 201298447 Y CN201298447 Y CN 201298447Y
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- Prior art keywords
- mutual inductor
- radome
- secondary lead
- sulfur hexafluoride
- electronic mutual
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Abstract
The utility model discloses a novel sulfur hexafluoride gas insulation electronic mutual inductor, which aims at providing an electronic mutual inductor realizing the function of a voltage transformer through replacing a magnet coil with a spiral coil and adopting a coaxial sulfur hexafluoride capacitance ring for capacitance division. The electronic mutual inductor comprises an inductor body, a secondary lead wire shielding pipe and an insulation frame, and is characterized in that the inductor body comprises a shielding case, the capacitance ring and the spiral coil, wherein, the spiral coil is arranged inside the shielding case, a groove is formed on the inner edge of the shielding case, the capacitance ring is clung in the groove, the shielding case is fixed on the secondary lead wire shielding pipe, the insulation frame is arranged between the secondary lead wire shielding pipe and a sleeve pipe, and a one-step conducting rod and the shielding case adopt a coaxial column-shaped structure. The utility model mainly serves as a current and voltage transformer for measurement and protection of a high-voltage power network.
Description
Technical field
The utility model relates to a kind of electric mutual inductor, relates in particular to a kind of novel sulfur hexafluoride gas-insulating electric mutual inductor.
Background technology
Along with transmission and distribution network develops towards high voltage, big capacity direction, there are following defective in traditional electromagnetic type electric current, voltage transformer: because of its sensor mechanism is an electromagnetic induction, more than quantity unshakable in one's determination and under the big situation of weight, cause the Product transport difficulty, cost increases, and because the existence of disc insulator brings the hidden danger in the insulation.Secondly induction electric current, voltage transformer also exist magnetic saturation, ferro resonance, the measurement dynamic range is little, frequency band is narrow, be subject to interference, finite capacity, output can't with problems such as computer directly links to each other, so impel people to develop more advanced instrument transformer.
All there are the technological deficiency that needs to be resolved hurrily in electronic current, voltage transformer at present, and the electronic current mutual inductor reliability is not high, the electronic type voltage transformer accuracy of measurement is lower.Some digital transformer substation demonstration projects are forced to adopt traditional capacitance divided voltage instrument transformer, and not only accuracy is not high, and have lost the part meaning and the effect of digital transformer substation.
Summary of the invention
The purpose of this utility model is to provide a kind of novel sulfur hexafluoride gas-insulating electric mutual inductor, to overcome above-mentioned shortcoming.
Technical solution of the present utility model is: sieve formula coil is set in the radome of electric mutual inductor device body replaces solenoid to alleviate the weight of radome, and cancelled the disc insulator of fixed mask cover, adopt a coaxial capacitance ring to carry out capacitance partial pressure, realize the voltage transformer function, radome directly is fixed on the secondary lead wires shielded-plate tube and by this lead-in wire shielded-plate tube ground connection, has realized that agent structure is pure sulfur hexafluoride gas-insulating.
The utility model comprises device body, secondary lead wires shielded-plate tube and insulating frame, it is characterized in that: described device body 3 comprises radome 10, electric capacity ring 11 and Luo Shi coil 12, sieve formula coil 12 places in the radome 10, the interior edge of this radome has groove 13, electric capacity ring 11 is close in this groove, 10 of radomes are fixed on the secondary lead wires shielded-plate tube 4, also are provided with insulating frame 5 between secondary lead wires shielded-plate tube 4 and the sleeve pipe 6, and primary conductive bar 2 is the coaxial cylindrical structure with radome 10.
The beneficial effects of the utility model are:
1, replaced the solenoid that is arranged in the device body radome with sieve formula coil, thereby alleviated the weight of radome greatly, helped the transportation of product and reduce cost.
2, adopt a coaxial capacitance ring to carry out capacitance partial pressure and realize the voltage transformer function, and air core coil (sieve formula coil) and electric capacity ring all shield in a ring shielding cover to eliminate interference.
3, owing to adopt sieve formula coil, alleviated the former weight that holds the radome of solenoid greatly, thereby cancelled the disc insulator of fixed mask cover, and radome directly is fixed on the secondary lead wires shielded-plate tube, and by this lead-in wire shielded-plate tube ground connection, realized that agent structure is pure sulfur hexafluoride gas-insulating, has improved the insulating reliability and the long-term working stability of instrument transformer greatly.
4, the utility model includes electric current, voltage transformer function simultaneously, and current transformer is owing to adopted unique insulation system no longer to need expensive laser powered sensor; Voltage transformer has adopted special Electric Field Distribution structure, and accuracy of measurement is not influenced by extraneous distributed capacitance.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
Fig. 2 is the structural representation of the utility model device body.
Among the figure: 1-housing, 2-primary conductive bar, 3-device body, 4-secondary lead wires shielded-plate tube, 5-insulating frame, 6-sleeve pipe, 7-secondary circuit plate, 8-secondary box, 9-base, 10-radome, 11-electric capacity ring, 12-sieve formula coil, 13-groove.
Embodiment
Below in conjunction with accompanying drawing the utility model and embodiment thereof are described in further detail.
Referring to Fig. 1-2, the utility model comprises device body, secondary lead wires shielded-plate tube and insulating frame, it is characterized in that: described device body 3 comprises radome 10, electric capacity ring 11 and Luo Shi coil 12, sieve formula coil 12 places in the radome 10, the interior edge of this radome has groove 13, and electric capacity ring 11 is close in this groove, and 10 of radomes are fixed on the secondary lead wires shielded-plate tube 4, also be provided with insulating frame 5 between secondary lead wires shielded-plate tube 4 and the sleeve pipe 6, primary conductive bar 2 is the coaxial cylindrical structure with radome 10.
During installation, earlier secondary lead wires shielded-plate tube 4 is fixed on the base 9, again sleeve pipe 6 is fixed on the base 9, then insulating frame 5 is sleeved on the secondary lead wires shielded-plate tube 4, adjust insulating frame 5 and make it withstand the inwall of sleeve pipe 6.Again device body 3 is installed in the top of secondary lead wires shielded-plate tube 4 and fixes, lift housing 1 at last in sleeve pipe 6 upper ends, and allow primary conductive bar 2 pass housing 1 and device body 3, make primary conductive bar 2 and radome 10 be the coaxial cylindrical structure.
Claims (1)
1, a kind of novel sulfur hexafluoride gas-insulating electric mutual inductor, comprise the device body, secondary lead wires shielded-plate tube and insulating frame, it is characterized in that: described device body (3) comprises radome (10), electric capacity ring (11) and sieve formula coil (12), sieve formula coil (12) places in the radome (10), the interior edge of this radome has groove (13), electric capacity ring (11) is close in this groove, radome (10) then is fixed on the secondary lead wires shielded-plate tube (4), also be provided with insulating frame (5) between secondary lead wires shielded-plate tube (4) and the sleeve pipe (6), primary conductive bar (2) is the coaxial cylindrical structure with radome (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201593343U CN201298447Y (en) | 2008-11-21 | 2008-11-21 | Novel sulfur hexafluoride gas insulation electronic mutual inductor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201593343U CN201298447Y (en) | 2008-11-21 | 2008-11-21 | Novel sulfur hexafluoride gas insulation electronic mutual inductor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201298447Y true CN201298447Y (en) | 2009-08-26 |
Family
ID=41044434
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201593343U Expired - Fee Related CN201298447Y (en) | 2008-11-21 | 2008-11-21 | Novel sulfur hexafluoride gas insulation electronic mutual inductor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201298447Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101813720A (en) * | 2010-04-19 | 2010-08-25 | 熊江咏 | Electronic combined mutual inductor |
| CN102360896A (en) * | 2011-10-25 | 2012-02-22 | 保定天威集团有限公司 | Gas current transformer |
-
2008
- 2008-11-21 CN CNU2008201593343U patent/CN201298447Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101813720A (en) * | 2010-04-19 | 2010-08-25 | 熊江咏 | Electronic combined mutual inductor |
| CN101813720B (en) * | 2010-04-19 | 2011-12-14 | 熊江咏 | Electronic combined mutual inductor |
| CN102360896A (en) * | 2011-10-25 | 2012-02-22 | 保定天威集团有限公司 | Gas current transformer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090826 Termination date: 20131121 |