CN203871168U - Semi-closed explosion-proof oil-immersed current transformer - Google Patents
Semi-closed explosion-proof oil-immersed current transformer Download PDFInfo
- Publication number
- CN203871168U CN203871168U CN201420212244.1U CN201420212244U CN203871168U CN 203871168 U CN203871168 U CN 203871168U CN 201420212244 U CN201420212244 U CN 201420212244U CN 203871168 U CN203871168 U CN 203871168U
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- Prior art keywords
- explosion
- insulator
- resistant enclosure
- current transformer
- fuel tank
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Abstract
The utility model discloses a semi-closed explosion-proof oil-immersed current transformer. An explosion-proof shell (4) is arranged outside an oil tank (1), a ceramic sleeve (202) stretches out of the explosion-proof shell (4), and the top face of the explosion-proof shell (4) is connected with the ceramic sleeve (202) in a sealed mode; a grounding terminal (5), a pressure relief valve (6), a moisture absorber (7), a display device (8) and a rupture disk (9) are arranged on the explosion-proof shell, a pressure sensor (10) is arranged on the inner surface of the explosion-proof shell (4), the pressure sensor (10) is connected with the pressure relief valve (6), and the pressure sensor (10) is connected with the display device (8); a lightning arrester (11) is arranged on the top face of the explosion-proof shell (4); an oil pressure gage (12) is arranged in the oil tank and connected with the display device (8). According to the semi-closed explosion-proof oil-immersed current transformer, explosion can be prevented by reducing pressure and isolating inflammable impurities and gas, the explosion-proof performance is good, only the oil tank is sealed in the explosion-proof shell, wiring is convenient to perform, and the transformer is easy to maintain and disassemble.
Description
Technical field
The utility model relates to a kind of current transformer, relates in particular to a kind of semiclosed explosion-proof oil-immersed current transformer.
Background technology
Oil-immersed current transformer is compared with the instrument transformer of other insulation forms, conduction is all strong, simple in structure with, easily reparation, restorability, is generally used to outdoor use, if but oil-immersed current transformer explode, to make substation equipment be subject to larger damage, to explosion-proof performance, require high.
In prior art, by improving the sealing of current transformer, with combustible dust, gas barrier in air, realize explosion-proof, but effect is limited, explosion-proof performance is poor.
Patent CN202513024 discloses a kind of oil-immersed current transformer, by oil conservator is set on insulator, expander is set on oil conservator, improves whole mechanical strength and sealing, improve reliability and the life-span of instrument transformer, can be applicable to the area that gradation for surface pollution is higher, but, filthy higher area, extraneous combustible dust, gas are more, more complicated, near by improving the tightness of oil-immersed current transformer, be not enough to improve explosion-proof performance.
In use, if the fuel tank of oil-immersed current transformer, outlet row, insulator, secondary outgoing line row and an insulator are all sealed, be unfavorable for heat radiation and wiring, keep in repair and disassemble all inconvenient.
Utility model content
The utility model has overcome the deficiencies in the prior art, provides a kind of and only has fuel tank to be enclosed in explosion-resistant enclosure, and explosion-proof performance is good, easy-to-connect, maintenance are disassembled simple semiclosed explosion-proof oil-immersed current transformer.
For solving the problems of the technologies described above, the technical solution adopted in the utility model is: semiclosed explosion-proof oil-immersed current transformer, comprise fuel tank, outlet row, insulator, secondary outgoing line row, insulator is arranged on fuel tank, an outlet row is arranged on the top of insulator, secondary outgoing line row is arranged on the side of insulator, and fuel tank is outside equipped with explosion-resistant enclosure, insulator stretches out explosion-resistant enclosure, and end face and the insulator of explosion-resistant enclosure are tightly connected.
On explosion-resistant enclosure, be provided with earth terminal, pressure relief valve, dehydrating breather, display unit and rupture disk, the inner surface of explosion-resistant enclosure is provided with pressure sensor, and pressure sensor is connected with pressure relief valve, and pressure sensor is connected with display unit.By dehydrating breather, can remove and be dried airborne foreign material and the moisture that enters the fuel tank of current transformer due to the variation of current transformer oil temperature by dehydrating breather, to keep the dielectric strength of current transformer.Earth terminal, for extraneous electron transport is walked, prevents that current transformer surface electronic from producing blast; Rupture disk prevents from blasting under maximum conditions, and the pressure in explosion-resistant enclosure is excessive, has little time to discharge, and can pass through rupture disk explosion release pressure, prevent exploding.
On the end face of explosion-resistant enclosure, be provided with lightning arrester, for the protection of electric equipment, avoid high transient overvoltage and endanger and limit time of afterflow, prevent the blast causing due to overvoltage.
In fuel tank, be provided with fuel pressure gage, fuel pressure gage is connected with display unit, shows in real time oil pressure in fuel tank, and security performance is high.
The oil filler point of fuel tank and drain oil are drawn from explosion-resistant enclosure by the first bronze medal post and the second bronze medal post respectively.One end that the first bronze medal post and the second bronze medal post stretch out explosion-resistant enclosure is provided with dust ring, with extraneous combustible dust isolation, improves explosion-proof performance.
The junction of fuel tank and insulator is provided with insulation film, improves insulation property.
Insulator is the insulator that a plurality of large umbellules are cross-linked.
Between fuel tank and explosion-resistant enclosure, be provided with spring, the two ends of spring are fixedly connected with explosion-resistant enclosure inner surface with tank side surface respectively, prevent from soaking formula current transformer when transportation or earthquake, produce collision and blast, and coefficient of safety is high.
On the end face of explosion-resistant enclosure, by disc insulator, seal good insulation preformance.
Compared with prior art, the beneficial effects of the utility model have: described fuel tank is outside equipped with explosion-resistant enclosure, described insulator stretches out explosion-resistant enclosure, end face and the insulator of described explosion-resistant enclosure are tightly connected, and only have fuel tank to be enclosed in explosion-resistant enclosure, and easy-to-connect, maintenance are disassembled simple; On described explosion-resistant enclosure, be provided with earth terminal, pressure relief valve, dehydrating breather, display unit and rupture disk; explosion-proof performance is good; on the end face of described explosion-resistant enclosure, be provided with lightning arrester; for the protection of electric equipment, avoid high transient overvoltage and endanger and limit time of afterflow, prevent the blast causing due to overvoltage.To sum up, the utility model can be realized explosion-proofly by reducing pressure, isolate inflammable impurity and gas, and explosion-proof performance is good, only has fuel tank to be enclosed in explosion-resistant enclosure, and easy-to-connect, maintenance are disassembled simple.
Accompanying drawing explanation
Fig. 1 is the utility model structural representation.
Embodiment
Below in conjunction with accompanying drawing, the utility model is further described.
As shown in Figure 1, semiclosed explosion-proof oil-immersed current transformer, comprise fuel tank 1, outlet row 201, insulator 202, secondary outgoing line row 3, insulator 202 is arranged on fuel tank 1, an outlet row 201 is arranged on the top of insulator 202, secondary outgoing line row 3 is arranged on the side of insulator 202, and fuel tank 1 is outside equipped with explosion-resistant enclosure 4, insulator 202 stretches out explosion-resistant enclosure 4, and end face and the insulator 202 of explosion-resistant enclosure 4 are tightly connected.
On explosion-resistant enclosure 4, be provided with earth terminal 5, pressure relief valve 6, dehydrating breather 7, display unit 8 and rupture disk 9, the inner surface of explosion-resistant enclosure 4 is provided with pressure sensor 10, pressure sensor 10 is connected with pressure relief valve 6, and pressure sensor 10 is connected with display unit 8.By dehydrating breather 7, can remove and be dried airborne foreign material and the moisture that enters the fuel tank of current transformer due to the variation of current transformer oil temperature by dehydrating breather, to keep the dielectric strength of current transformer.Earth terminal 5, for extraneous electron transport is walked, prevents that current transformer surface electronic from producing blast; Rupture disk 9 prevents from blasting under maximum conditions, and the pressure in explosion-resistant enclosure 4 is excessive, has little time to discharge, and can pass through rupture disk 9 explosion release pressures, prevent exploding.
On the end face of explosion-resistant enclosure 4, be provided with lightning arrester 11, for the protection of electric equipment, avoid high transient overvoltage and endanger and limit time of afterflow, prevent the blast causing due to overvoltage.
In fuel tank, be provided with fuel pressure gage 12, fuel pressure gage 12 is connected with display unit 8, shows in real time oil pressure in fuel tank, and security performance is high.
The oil filler point of fuel tank 1 and drain oil are drawn from explosion-resistant enclosure 4 by the first bronze medal post and the second bronze medal post respectively.One end that the first bronze medal post and the second bronze medal post stretch out explosion-resistant enclosure 4 is provided with dust ring, with extraneous combustible dust isolation, improves explosion-proof performance; Owing to being illustrated as sectional view, oil filler point, drain oil, the first bronze medal post, the second bronze medal post do not show in the drawings.
Fuel tank 1 is provided with insulation film with the junction of insulator 202, improves insulation property.
The insulator that insulator 202 is cross-linked for a plurality of large umbellules.
Between fuel tank 1 and explosion-resistant enclosure 4, be provided with spring 13, the two ends of spring 13 are fixedly connected with explosion-resistant enclosure 4 inner surfaces with fuel tank 1 side surface respectively, prevent from soaking formula current transformer when transportation or earthquake, produce collision and blast, and coefficient of safety is high.
On the end face of explosion-resistant enclosure 4, by disc insulator, seal good insulation preformance.
Below be only preferred implementation of the present utility model; be noted that for those skilled in the art; not departing under the prerequisite of the utility model principle, can also make some improvements and modifications, these improvements and modifications also should be considered as protection range of the present utility model.
Claims (7)
1. semiclosed explosion-proof oil-immersed current transformer, comprise fuel tank (1), an outlet row (201), insulator (202), secondary outgoing line row (3), described insulator (202) is arranged on fuel tank (1), an outlet row (201) is arranged on the top of insulator (202), described secondary outgoing line row (3) is arranged on the side of insulator (202), it is characterized in that, described fuel tank (1) is outside equipped with explosion-resistant enclosure (4), described insulator (202) stretches out explosion-resistant enclosure (4), and end face and the insulator (202) of described explosion-resistant enclosure (4) are tightly connected;
On described explosion-resistant enclosure, be provided with earth terminal (5), pressure relief valve (6), dehydrating breather (7), display unit (8) and rupture disk (9), the inner surface of described explosion-resistant enclosure (4) is provided with pressure sensor (10), described pressure sensor (10) is connected with pressure relief valve (6), and described pressure sensor (10) is connected with display unit (8);
On the end face of described explosion-resistant enclosure (4), be provided with lightning arrester (11);
In described fuel tank, be provided with fuel pressure gage (12), described fuel pressure gage (12) is connected with display unit (8).
2. semiclosed explosion-proof oil-immersed current transformer according to claim 1, is characterized in that: the oil filler point of described fuel tank (1) and drain oil are drawn from explosion-resistant enclosure (4) by the first bronze medal post and the second bronze medal post respectively.
3. semiclosed explosion-proof oil-immersed current transformer according to claim 2, is characterized in that: one end that described the first bronze medal post and the second bronze medal post stretch out explosion-resistant enclosure (4) is provided with dust ring.
4. semiclosed explosion-proof oil-immersed current transformer according to claim 1, described fuel tank (1) is provided with insulation film with the junction of insulator (202).
5. semiclosed explosion-proof oil-immersed current transformer according to claim 1, the insulator that described insulator (202) is cross-linked for a plurality of large umbellules.
6. semiclosed explosion-proof oil-immersed current transformer according to claim 1, it is characterized in that: between described fuel tank (1) and explosion-resistant enclosure (4), be provided with spring (13), the two ends of described spring (13) are fixedly connected with explosion-resistant enclosure (4) inner surface with fuel tank (1) side surface respectively.
7. semiclosed explosion-proof oil-immersed current transformer according to claim 1, is characterized in that: on the end face of explosion-resistant enclosure (4), by disc insulator, seal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420212244.1U CN203871168U (en) | 2014-04-29 | 2014-04-29 | Semi-closed explosion-proof oil-immersed current transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420212244.1U CN203871168U (en) | 2014-04-29 | 2014-04-29 | Semi-closed explosion-proof oil-immersed current transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203871168U true CN203871168U (en) | 2014-10-08 |
Family
ID=51652093
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420212244.1U Expired - Fee Related CN203871168U (en) | 2014-04-29 | 2014-04-29 | Semi-closed explosion-proof oil-immersed current transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203871168U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103943344A (en) * | 2014-04-29 | 2014-07-23 | 昆山达功电子有限公司 | Semi-closed anti-explosion oil immersed current transformer |
-
2014
- 2014-04-29 CN CN201420212244.1U patent/CN203871168U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103943344A (en) * | 2014-04-29 | 2014-07-23 | 昆山达功电子有限公司 | Semi-closed anti-explosion oil immersed current transformer |
| CN103943344B (en) * | 2014-04-29 | 2016-03-09 | 昆山达功电子有限公司 | Semiclosed explosion-proof oil-immersed current transformer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141008 Termination date: 20150429 |
|
| EXPY | Termination of patent right or utility model |