CN109509627A - A kind of gas-insulated integral combined transformer - Google Patents
A kind of gas-insulated integral combined transformer Download PDFInfo
- Publication number
- CN109509627A CN109509627A CN201811634132.4A CN201811634132A CN109509627A CN 109509627 A CN109509627 A CN 109509627A CN 201811634132 A CN201811634132 A CN 201811634132A CN 109509627 A CN109509627 A CN 109509627A
- Authority
- CN
- China
- Prior art keywords
- gas
- shell
- transformer
- coil group
- integral combined
- 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.)
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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
- H01F38/38—Instruments transformers for polyphase ac
-
- 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
- H01F27/08—Cooling; Ventilating
- H01F27/20—Cooling by special gases or non-ambient air
-
- 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
- H01F27/28—Coils; Windings; Conductive connections
- H01F27/29—Terminals; Tapping arrangements for signal inductances
-
- 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
- H01F27/28—Coils; Windings; Conductive connections
- H01F27/32—Insulating of coils, windings, or parts thereof
- H01F27/324—Insulation between coil and core, between different winding sections, around the coil; Other insulation structures
Abstract
The invention discloses a kind of gas-insulated integral combined transformers, including shell, current transformer and voltage transformer, and the shell is metal material, and shell surrounds internal cavity；The current transformer includes first coil group；The voltage transformer includes the second coil group；The first coil group and the second coil group are all set in internal cavity；Insulating gas is set in the internal cavity.A kind of gas-insulated integral combined transformer of the present invention, by the way that above structure is arranged, self- recoverage can be carried out after the insulation of product discharge breakdown, effectively reduce maintenance cost, and rapid cooling can be carried out to mutual inductor, greatly enhance the insulation performance of combination transformer.
Description
Technical field
The present invention relates to electrical engineering technologies, and in particular to a kind of gas-insulated integral combined transformer.
Background technique
Combination transformer is used for outdoor measurement or protection, has two kinds to use structure, " phase three-wire three mode -2 at present
Electric current, 2 voltages are at the V-V mode of connection ", " 3 electric currents of mode-of three-phase and four-line, 3 voltages are at the Y-Y mode of connection ".
The insulation system that combination transformer uses at present has following two mode: oil immersed type integral combined transformer and ring
The split type combination transformer cast-type of oxygen resin:
Oil immersed type integral combined transformer is currently phase three-wire three mode -2 electric current, and 2 voltages are at V-V wiring
Mode, shortcoming are: small product size is huge, heavy, be easy leakage of oil, and to carry out every year Maintenance and Repair it is at high cost and arrange
Power failure outdoor maintenance trouble.
The split type combination transformer cast-type of epoxy resin, is currently phase three-wire three mode -2 electric current, 2 voltages at,
The V-V mode of connection, and be to be mounted in a bulk of square installing plate, by 2 monophase currents, 2 single-phase voltages in outside air
Middle progress related electric connection, shortcoming: if product structure is complicated, poor contact or loosening easily cause product to discharge, after
And cause product fever and cause insulation harm, product safety operation is influenced, while the frame mode product secondary connection is cumbersome,
Voltage secondary terminals short circuit is easily caused, causes the rigid trial operation of product soon, product bursts or burns caused by occurring because of short circuit.
Summary of the invention
The technical problem to be solved by the present invention is to the generally existing maintenance cost height of combination transformer in the prior art, dissipate
Fuel factor is poor, and the problem of safety difference is, and it is an object of the present invention to provide a kind of gas-insulated integral combined transformer, solves above-mentioned ask
Topic.
The present invention is achieved through the following technical solutions:
A kind of gas-insulated integral combined transformer, including shell, current transformer and voltage transformer, the shell
For metal material, and shell surrounds internal cavity；The current transformer includes first coil group；The voltage transformer includes
Second coil group；The first coil group and the second coil group are all set in internal cavity；Setting is exhausted in the internal cavity
Edge gas.
In application, surrounding in shell all coil groups are arranged in the present invention in internal cavity, while these coil groups can be with
It is fixed in internal cavity by insulated leg, and is filled with insulating gas in internal cavity, these are set by insulating gas
Standby to insulate, for the insulation of oily formula and insulation resin, carrying out insulation by insulating gas can hit in product electric discharge
Self- recoverage is carried out after wearing insulation, effectively reduces maintenance cost.Simultaneously inventors have found that current transformer and voltage is mutual
When sensor is integrated into the same internal cavity, the calorific value of first coil group and the second coil group is different, and system is occurring
When aging, or even it will appear individual coil group and largely generate heat, and other coil group calorific values are smaller, such that coil occurs
Hot-spot reduces the insulation performance of coil surrounding insulation material, so present invention employs the modes of insulating gas to carry out absolutely
Edge, when hot-spot occurs in coil, simultaneously with other insulating gas convection current occurs for overheated gas expansion, so that dissipating in the prior art
The heat loss through conduction and heat loss through radiation of hot means become three kinds of heat loss through convection, heat loss through conduction and heat loss through radiation means, greatly enhance
The insulation performance of combination transformer.The present invention can be carried out certainly by setting above structure after the insulation of product discharge breakdown
Restore, effectively reduces maintenance cost, and rapid cooling can be carried out to mutual inductor, greatly enhance combination transformer
Insulation performance.
Further, the current transformer further includes the first insulator and the first side terminals；Described 1st
One end of secondary side terminal is connected to first coil group, and the other end passes through shell and extends to shell exterior；First insulation
Sub-set extends to the part of shell exterior loaded on the first side terminals.
The present invention in application, the first side terminals stretch out shell exterior, and are insulated by the first insulator so that
The first one times side terminal facilitates wiring while keeping insulating.
Further, the voltage transformer further includes the second insulator and the second side terminals；Described 2nd 1
One end of secondary side terminal is connected to the second coil group, and the other end passes through shell and extends to shell exterior；Second insulation
Sub-set extends to the part of shell exterior loaded on the second side terminals.
The present invention in application, the second side terminals stretch out shell exterior, and are insulated by the second insulator so that
The second one times side terminal facilitates wiring while keeping insulating.
It further, further include the terminal plate for being set to outer surface of outer cover；Multiple wiring holes, institute are set on the terminal plate
It states multiple wiring holes and is connected to the secondary side terminal of current transformer and the secondary side terminal of voltage transformer.
The present invention in application, since all coils are arranged inside internal cavity, so secondary side wiring when
Time is easy to produce confusion, and the present invention passes through the wiring hole being arranged on terminal plate and carries out secondary side wiring, can effectively improve
Wiring efficiency.
Further, the insulating gas uses SF6 or CF3I.
Further, the insulating gas uses SF6, and the air pressure of SF6 uses 0.2~0.4MPa.
Further, the quantity of the current transformer is three, and the quantity of the voltage transformer is three；Three electricity
Pressure mutual inductor is all set in internal cavity, and three voltage transformers are the Y-Y mode of connection；Three voltage transformers constitute three
Four ray mode of phase.
The present invention is in application, in the prior art due to insulation and Structure Designing Problem, so combined instrument transformer is mostly three
Three-phase three-wire system；Three voltage transformers are all integrated into internal cavity by the invention, and in connecting inner cavity
Insulating gas insulate, to realize the three-phase and four-line mode of combination transformer, it can guarantee insulation, and can protect
Card heat dissipation.
The Y-Y mode of connection is that the both ends of three phase voltages are respectively connected to using three mutual inductors, wherein each phase voltage
There is one end to link together, primary side claims neutral point, and the secondary side point is normally grounded.The linked vector graph of primary side and secondary side is all
In Y type (or star-like).
Further, three current transformers are respectively connected to the A phase, B phase and C phase of route.
Compared with prior art, the present invention having the following advantages and benefits:
A kind of gas-insulated integral combined transformer of the present invention can discharge in product and hit by the way that above structure is arranged
Self- recoverage is carried out after wearing insulation, maintenance cost is effectively reduced, and rapid cooling can be carried out to mutual inductor, greatly enhances
The insulation performance of combination transformer.
Detailed description of the invention
Attached drawing described herein is used to provide to further understand the embodiment of the present invention, constitutes one of the application
Point, do not constitute the restriction to the embodiment of the present invention.In the accompanying drawings:
Fig. 1 is structural schematic diagram of the embodiment of the present invention；
Fig. 2 is side structure schematic view of the embodiment of the present invention；
Fig. 3 is terminal plate of embodiment of the present invention schematic diagram；
Fig. 4 is overlooking structure diagram of the embodiment of the present invention；
Fig. 5 is present invention looks up structural representation of the embodiment of the present invention；
Fig. 6 is three-phase and four-line of embodiment of the present invention structural schematic diagram；
Fig. 7 is elementary diagram of embodiment of the present invention schematic diagram.
Label and corresponding parts title in attached drawing:
1- shell, 2- terminal plate, 3- current transformer, 4- voltage transformer, 5- internal cavity, 31- first coil group,
The first insulator of 32-, the first side terminals of 33-, the second coil group of 41-, the second insulator of 42-, 43- second are once flanked
Line end.
Specific embodiment
To make the objectives, technical solutions, and advantages of the present invention clearer, below with reference to embodiment and attached drawing, to this
Invention is described in further detail, and exemplary embodiment of the invention and its explanation for explaining only the invention, are not made
For limitation of the invention.
Embodiment 1
As shown in Figure 1, Figure 2, shown in Fig. 4, Fig. 5, a kind of gas-insulated integral combined transformer of the present invention, including shell 1, electricity
Current transformer 3 and voltage transformer 4, the shell 1 is metal material, and shell 1 surrounds internal cavity 5；The Current Mutual Inductance
Device 3 includes first coil group 31；The voltage transformer 4 includes the second coil group 41；The first coil group 31 and the second line
Circle group 41 is all set in internal cavity；Insulating gas is set in the internal cavity 5.
When the present embodiment is implemented, is surrounded in shell 1 and all coil groups are set in internal cavity 5, while these coil groups
It can be fixed on by insulated leg in internal cavity 5, and be filled with insulating gas in internal cavity 5, pass through insulating gas pair
These equipment insulate, and for the insulation of oily formula and insulation resin, carrying out insulation by insulating gas can be in product
Self- recoverage is carried out after discharge breakdown insulation, effectively reduces maintenance cost.Simultaneously inventors have found that by current transformer 3
When being integrated into the same internal cavity 5 with voltage transformer 4, the calorific value of first coil group 31 and the second coil group 41 is different
, when there is system aging, or even it will appear individual coil group and largely generate heat, and other coil group calorific values are smaller, in this way
Meeting is so that hot-spot, the insulation performance of reduction coil surrounding insulation material occurs in coil, so present invention employs insulation gas
The mode of body insulate, and when hot-spot occurs in coil, simultaneously with other insulating gas convection current occurs for overheated gas expansion, makes
The heat loss through conduction and heat loss through radiation for obtaining heat dissipation in the prior art become three kinds of heat loss through convection, heat loss through conduction and heat loss through radiation hands
Section, greatly enhances the insulation performance of combination transformer.The present invention, can be in product discharge breakdown by setting above structure
Self- recoverage is carried out after insulation, is effectively reduced maintenance cost, and rapid cooling can be carried out to mutual inductor, is greatly enhanced
The insulation performance of combination transformer.
Embodiment 2
On the basis of embodiment 1, the current transformer 3 further includes that the first insulator 32 and first is primary to the present embodiment
Side terminal 33；One end of the first side terminals 33 is connected to first coil group 31, and the other end passes through shell 1 and prolongs
It reaches outside shell 1；First insulator 32 is set in the first side terminals 33 and extends to the part outside shell 1.
When the present embodiment is implemented, the first one times side terminal 33 is stretched out outside shell 1, and is carried out absolutely by the first insulator 32
Edge, so that the first side terminals 33 facilitate wiring while keeping insulating.
Embodiment 3
On the basis of embodiment 1, the voltage transformer 4 further includes that the second insulator 42 and second is primary to the present embodiment
Side terminal 43；One end of the second side terminals 43 is connected to the second coil group 41, and the other end passes through shell 1 and prolongs
It reaches outside shell 1；Second insulator 42 is set in the second side terminals 43 and extends to the part outside shell 1.
When the present embodiment is implemented, the second one times side terminal 43 stretches out shell exterior, and is carried out absolutely by the second insulator 42
Edge, so that the second side terminals 43 facilitate wiring while keeping insulating.
Embodiment 4
As shown in figure 3, the present embodiment on the basis of embodiment 1, further includes the terminal plate 2 for being set to 1 outer surface of shell；
Multiple wiring holes are set on the terminal plate 2, and the multiple wiring hole is connected to the secondary side terminal of current transformer 3
With the secondary side terminal of voltage transformer 4.
When the present embodiment is implemented, since all coils are arranged inside internal cavity, so in secondary side wiring
When be easy to produce confusion, the present invention passes through the wiring hole being arranged on terminal plate and carries out secondary side wiring, can effectively mention
High wiring efficiency.
Embodiment 5
As shown in fig. 6, the present embodiment is on the basis of embodiment 1, the quantity of the current transformer 3 is three, described
The quantity of voltage transformer 4 is three；Three voltage transformers 4 are all set in internal cavity 5, and three voltage transformers 4
For the Y-Y mode of connection；Three voltage transformers 4 constitute three-phase and four-line mode.
When the present embodiment is implemented, in the prior art due to insulation and Structure Designing Problem, so combined instrument transformer is mostly
Three-phase three-wire system；Three voltage transformers 4 are all integrated into internal cavity by the invention, and connecting inner cavity
In insulating gas insulate, to realize the three-phase and four-line mode of combination transformer, it can guarantee insulation, and can be with
Guarantee heat dissipation.
Embodiment 6
The present embodiment is on the basis of Examples 1 to 4, such as Fig. 1~5, is wrapped to form internal cavity 5 in shell 1, electric current is mutual
Sensor 3 is two, and voltage transformer 4 is two, and the mode of connection is shown in Fig. 7, is V-V- wiring, passes through insulation in internal cavity 5
Gas-insulated, the present embodiment are equivalent to a phase three-wire three type combination transformer；
The connecting terminal of 3 secondary side of current transformer is as1~3 and bs1~3 in the present embodiment, and voltage transformer 4
Secondary side connecting terminal is a b c, these terminals can be connected in Fig. 3 on the wiring hole of terminal plate 2, to facilitate wiring.
Embodiment 7
As shown in Figure 6 and Figure 7, for the present embodiment on the basis of embodiment 5, three voltage transformers 4 are in internal cavity 5
Interior, the primary side of three current transformers 3 stretches out shell 1, and overall structure is very compact, is easily installed, while current transformer 3
The connecting terminal of secondary side be as1~4, bs1~4, cs1~4, these terminals can also be connected on the wiring hole of terminal plate 2,
To facilitate wiring.
Above-described specific embodiment has carried out further the purpose of the present invention, technical scheme and beneficial effects
It is described in detail, it should be understood that being not intended to limit the present invention the foregoing is merely a specific embodiment of the invention
Protection scope, all within the spirits and principles of the present invention, any modification, equivalent substitution, improvement and etc. done should all include
Within protection scope of the present invention.
Claims (8)
1. a kind of gas-insulated integral combined transformer, including shell (1), current transformer (3) and voltage transformer (4),
It is characterized in that, the shell (1) is metal material, and shell (1) surrounds internal cavity (5)；Current transformer (3) packet
Include first coil group (31)；The voltage transformer (4) includes the second coil group (41)；The first coil group (31) and second
Coil group (41) is all set in internal cavity；Insulating gas is set in the internal cavity (5).
2. a kind of gas-insulated integral combined transformer according to claim 1, which is characterized in that the Current Mutual Inductance
Device (3) further includes the first insulator (32) and the first side terminals (33)；The one of the first side terminals (33)
End is connected to first coil group (31), and the other end passes through shell (1) and extends to shell (1) outside；First insulator
(32) the first side terminals (33) are set in and extend to the external part of shell (1).
3. a kind of gas-insulated integral combined transformer according to claim 1, which is characterized in that the mutual induction of voltage
Device (4) further includes the second insulator (42) and the second side terminals (43)；The one of the second side terminals (43)
End is connected to the second coil group (41), and the other end passes through shell (1) and extends to shell (1) outside；Second insulator
(42) the second side terminals (43) are set in and extend to the external part of shell (1).
4. a kind of gas-insulated integral combined transformer according to claim 1, which is characterized in that further include being set to
The terminal plate (2) of shell (1) outer surface；Multiple wiring holes are set on the terminal plate (2), the multiple wiring hole is separately connected
In the secondary side terminal of current transformer (3) and the secondary side terminal of voltage transformer (4).
5. a kind of gas-insulated integral combined transformer according to claim 1, which is characterized in that the insulating gas
Using SF6 or CF3I.
6. a kind of gas-insulated integral combined transformer according to claim 5, which is characterized in that the insulating gas
Using SF6, and the air pressure of SF6 uses 0.2~0.4MPa.
7. a kind of gas-insulated integral combined transformer according to claim 1, which is characterized in that the Current Mutual Inductance
The quantity of device (3) is three, and the quantity of the voltage transformer (4) is three；Three voltage transformers (4) are all set in inside
In cavity (5), and three voltage transformers (4) are the Y-Y mode of connection；Three voltage transformers (4) constitute three-phase and four-line mode.
8. a kind of gas-insulated integral combined transformer according to claim 7, which is characterized in that three electric currents
Mutual inductor (3) is respectively connected to the A phase, B phase and C phase of route.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811634132.4A CN109509627A (en) | 2018-12-29 | 2018-12-29 | A kind of gas-insulated integral combined transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811634132.4A CN109509627A (en) | 2018-12-29 | 2018-12-29 | A kind of gas-insulated integral combined transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109509627A true CN109509627A (en) | 2019-03-22 |
Family
ID=65756925
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811634132.4A Pending CN109509627A (en) | 2018-12-29 | 2018-12-29 | A kind of gas-insulated integral combined transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109509627A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR200183105Y1 (en) * | 1999-11-12 | 2000-05-15 | 일진전기공업주식회사 | Fuse connecting multi contact of cubicle-type sulfur hexafluo ride gas insulated combined voltage current transformer |
| KR200197600Y1 (en) * | 2000-04-18 | 2000-09-15 | 공호영 | Gas insulation type current transformer for measuring electricity |
| CN2754195Y (en) * | 2004-09-23 | 2006-01-25 | 山东泰开互感器有限公司 | Outdoor high-voltage combined mutual inductor |
| KR101475930B1 (en) * | 2014-01-16 | 2014-12-23 | 경동중전기(주) | Metering out fit with SF6 gas |
| CN209087568U (en) * | 2018-12-29 | 2019-07-09 | 重庆睿伊互感器研究院有限公司 | A kind of gas-insulated integral combined transformer |
-
2018
- 2018-12-29 CN CN201811634132.4A patent/CN109509627A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR200183105Y1 (en) * | 1999-11-12 | 2000-05-15 | 일진전기공업주식회사 | Fuse connecting multi contact of cubicle-type sulfur hexafluo ride gas insulated combined voltage current transformer |
| KR200197600Y1 (en) * | 2000-04-18 | 2000-09-15 | 공호영 | Gas insulation type current transformer for measuring electricity |
| CN2754195Y (en) * | 2004-09-23 | 2006-01-25 | 山东泰开互感器有限公司 | Outdoor high-voltage combined mutual inductor |
| KR101475930B1 (en) * | 2014-01-16 | 2014-12-23 | 경동중전기(주) | Metering out fit with SF6 gas |
| CN209087568U (en) * | 2018-12-29 | 2019-07-09 | 重庆睿伊互感器研究院有限公司 | A kind of gas-insulated integral combined transformer |
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