CN207719011U - Four cracking H grade insulation dry transformers - Google Patents
Four cracking H grade insulation dry transformers Download PDFInfo
- Publication number
- CN207719011U CN207719011U CN201820061982.9U CN201820061982U CN207719011U CN 207719011 U CN207719011 U CN 207719011U CN 201820061982 U CN201820061982 U CN 201820061982U CN 207719011 U CN207719011 U CN 207719011U
- Authority
- CN
- China
- Prior art keywords
- low
- voltage
- voltage coil
- coil
- group
- 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.)
- Active
Links
Landscapes
- Coils Of Transformers For General Uses (AREA)
Abstract
The utility model proposes one kind four to crack H grade insulation dry transformers, including：Insulator body is internally provided with assembly iron core, assembly iron core is made of multiple core assemblies, the outside of each core assembly is equipped with multigroup high-voltage coil and low-voltage coil group successively from top to bottom, the high-voltage connection that high-tension coil in every group of high-voltage coil and low-voltage coil group is drawn is connect with the high-voltage connection interface for being arranged in the upper end of insulator body respectively, and the low-voltage lead that the low-voltage coil in every group of high-voltage coil and low-voltage coil group is drawn is carried corresponding interface on the low-voltage lead terminal plate in portion on the body in insulator and connected with being arranged respectively.Transformer low voltage winding by being split into several branches of electrical up and down knot by the utility model, high-tension coil and low-voltage coil is greatly improved respectively to divide between part, and the short-circuit impedance value between each section after low-voltage coil division, it can effective limiting short-circuit current, to reduce to the short-circuit impact of electrical equipment and the fluctuation of busbar voltage, and then improve the service life of transformer.
Description
Technical field
The utility model is related to transformer technology field, more particularly to one kind four cracks H grade insulation dry transformers.
Background technology
Transformer is power generation, and the important equipment in power supply and electricity consumption enterprise, it is also at extremely crucial ground in power grid
Position is to ensure power grid security, reliable operation and the extremely important equipment of people's production and household electricity, and the knot of transformer
Structure and the material of making directly influence the quality and safety of power supply.Although transformer is mature technology, according to existing change
The needs of depressor, it is still desirable to which transformer is constantly improved.
However the short-circuit impedance value at present between the high-tension coil and low-voltage coil in dry-type transformer is small, is easy to electrical
Equipment forms the fluctuation of short-circuit impact and busbar voltage, lowers the service life of dry-type transformer.
Utility model content
The purpose of this utility model aims to solve at least one of described technological deficiency.
For this purpose, the purpose of this utility model is that four cracking H grade insulation dry transformers of proposition one kind, can effectively limit
Short circuit current processed, to reduce to the short-circuit impact of electrical equipment and the fluctuation of busbar voltage.
To achieve the goals above, the utility model provides one kind four and cracks H grade insulation dry transformers, including insulator
Body, assembly iron core, high-tension coil, low-voltage coil, high-voltage connection, low-voltage lead, wind turbine, blower rack,
Insulator body is internally provided with assembly iron core, and assembly iron core is made of multiple core assemblies, outside each core assembly
Side is equipped with multigroup high-voltage coil and low-voltage coil group successively from top to bottom, and high-tension coil, low-voltage coil are designed in every group of high-voltage coil and low-voltage coil group,
And the high-voltage connection point that the high-tension coil in the inside of low-voltage coil, every group of high-voltage coil and low-voltage coil group is drawn is arranged in high-tension coil
It is not connect with the high-voltage connection interface for being arranged in the upper end of insulator body, the low-voltage coil in every group of high-voltage coil and low-voltage coil group is drawn
Low-voltage lead carry corresponding interface on the low-voltage lead terminal plate in portion on the body respectively in insulator and connect with being arranged；Insulator body
Bottom is equipped with multiple blower fan groups, sets that there are two the wind turbines for the bottom front and rear sides for being separately positioned on insulator body in each blower fan group
With the fan supporter of fixed wind turbine.
Further, the top of the insulator body is additionally provided with temperature controller, and the temperature controller selects electric thermo-couple temperature pick-up
Device.
Further, the assembly iron core is integrally formed by 3 core assemblies.
Further, the outside of each core assembly is equipped with 4 groups of high-voltage coil and low-voltage coil groups successively from top to bottom.
Further, the top of the insulator body is additionally provided with epoxy tube, and the epoxy tube is sleeved on the outside of high-voltage connection.
Further, the lower part of the insulator body is additionally provided with ground interface, and ground interface is grounded.
Further, the insulator body selects Nomex isolits.
The utility model is greatly improved by the way that transformer low voltage winding to be split into several branches of electrical up and down knot
High-tension coil and low-voltage coil respectively divide the short-circuit impedance value between each section between part and after low-voltage coil division,
Can effective limiting short-circuit current, to reduce to the short-circuit impact of electrical equipment and the fluctuation of busbar voltage, and then improve
The service life of transformer.
The additional aspect of the utility model and advantage will be set forth in part in the description, partly will be from following description
In become apparent, or recognized by the practice of the utility model.
Description of the drawings
The above-mentioned and/or additional aspect and advantage of the utility model will in the description from combination following accompanying drawings to embodiment
Become apparent and is readily appreciated that, wherein：
Fig. 1 is the front view of the utility model；
Fig. 2 is the vertical view of the utility model；
Fig. 3 is the side view of the utility model；
Fig. 4 is the rearview of the utility model；
Fig. 5 is the primary side high-voltage connection schematic diagram of the utility model；
Fig. 6 is one group of the secondary side elementary diagram of the utility model；
Fig. 7 is two groups of the secondary side elementary diagram of the utility model；
Fig. 8 is three groups of the secondary side elementary diagram of the utility model；
Fig. 9 is four groups of the secondary side elementary diagram of the utility model.
Specific implementation mode
The embodiments of the present invention are described below in detail, examples of the embodiments are shown in the accompanying drawings, wherein from beginning
Same or similar element or element with the same or similar functions are indicated to same or similar label eventually.Below by ginseng
The embodiment for examining attached drawing description is exemplary, it is intended to for explaining the utility model, and should not be understood as to the utility model
Limitation.
The utility model provides one kind four and cracks H grade insulation dry transformers, shown in refer to the attached drawing 1-9, including insulator
Body 1, assembly iron core 7, high-tension coil 21, low-voltage coil 22, high-voltage connection 3, low-voltage lead 6, wind turbine 4, blower rack 5.
Insulator body 1 is internally provided with assembly iron core 7, and assembly iron core 7 is made of multiple core assemblies, each core assembly
Outside is equipped with multigroup high-voltage coil and low-voltage coil group 2 successively from top to bottom, and high-tension coil 21, low is designed in every group of high-voltage coil and low-voltage coil group 2
Crimping circle 22, and 21 institute of high-tension coil that high-tension coil 21 is arranged in the inside of low-voltage coil 22, every group of high-voltage coil and low-voltage coil group 2
The high-voltage connection 3 of extraction is connect with the high-voltage connection interface for being arranged in the upper end of insulator body 1 respectively, as shown in fig. 1, high pressure
Lead is connect with A, B, C respectively, the low-voltage lead 6 that the low-voltage coil 22 in every group of high-voltage coil and low-voltage coil group 2 is drawn respectively with set
The corresponding interface connection on the low-voltage lead terminal plate 61 at 1 back of insulator body is set, as shown in figure 4, each low-voltage coil
One end low-voltage lead respectively with it is secondary while one group, it is secondary while two groups, secondary three groups of side (in Fig. 4 c1, b1, a1, c2, b2, a2, c3,
B3, a3, c4, b4, a4) connection, then c1, b1, a1 are secondary one group of side, and c2, b2, a2 are secondary two groups of side, and c3, b3, a3 are secondary side three
Group, c4, b4, a4 are secondary four groups of side, and the wiring diagram of the other end low-voltage lead of each low-voltage coil is as Figure 6-9；Insulator
The bottom of body 1 is equipped with multiple blower fan groups, and the four cracking H grade insulation dry transformers by blower fan group to the utility model are dissipated
Heat improves whole heat dissipation performance.The bottom front and rear sides of insulator body are separately positioned on there are two being set in each blower fan group
The fan supporter 5 of wind turbine 4 and fixed wind turbine.
Further, the top of insulator body 1 is additionally provided with temperature controller 8, and temperature controller 8 selects thermocouple temperature transmitter.
Further, the top of insulator body 1 is additionally provided with epoxy tube 9, and epoxy tube 9 is sleeved on 3 outside of high-voltage connection.
Further, the lower part of insulator body 1 is additionally provided with ground interface, and ground interface is grounded.
Further, insulator body 1 selects Nomex isolits.
When assembly iron core 7 is integrally formed by 3 core assemblies；And the outside of each core assembly is equipped with successively from top to bottom
When 4 groups of high-voltage coil and low-voltage coil groups 2.The then primary side high-voltage connection schematic diagram of the four cracking H grade insulation dry transformers of the utility model
As shown in Figure 5；The elementary diagram that one group to four groups of secondary side is as Figure 6-9, secondary identical as three groups when pair of wiring at one group,
The other end low-voltage lead of each low-voltage coil in i.e. secondary one group of side connects altogether；It is secondary identical as four groups when pair of wiring at two groups,
Each low-voltage coil in i.e. secondary two groups of side concatenates from beginning to end successively.
When work, three-phase electrical power system, c1, b1, a1, c2, b2, a2, c3, b3, a3, c4, b4, a4 are accessed at A, B, C
For secondary windings leading-out terminal.
The high temperature insulation grade of dry-type transformer is divided into B grades, F grades, H grades, C grades etc., as shown in table 1 below；
Table 1
| High temperature insulation grade | A | E | B | F | H | N | C |
| Maximum operating temperature/DEG C | 105 | 120 | 130 | 155 | 180 | 200 | 220 |
The four cracking H grade insulation dry transformers of the utility model use Nomex isolits, high temperature insulation grade
It it is H grades, as can be seen from the above table, since the limit value of the H grades of dry winding average temperature risings become is higher by F grades of dry changes 25%, so design
When current density can choose higher, the size and volume of transformer can be accordingly reduced, in addition, Nomex isolits can be with
Larger temperature gradient is born, so overload capacity is stronger.Nomex paper also has heat resistance outstanding, excellent moisture resistance
Energy, flame retardant property outstanding, superior electric property etc. so that the four cracking H grade insulation dry transformers of the utility model
Anti-flammability, moisture resistance, heat resistance greatly improve.
The utility model is greatly improved by the way that transformer low voltage winding to be split into several branches of electrical up and down knot
High-tension coil and low-voltage coil respectively divide the short-circuit impedance value between each section between part and after low-voltage coil division,
Can effective limiting short-circuit current, to reduce to the short-circuit impact of electrical equipment and the fluctuation of busbar voltage, and then improve
The service life of transformer.
For the utility model not only with heat resistance outstanding, also with firm mechanical performance, overall volume is small, is convenient for
Installation and repair.
Although the embodiments of the present invention have been shown and described above, it is to be understood that above-described embodiment is
Illustratively, it should not be understood as limiting the present invention, those skilled in the art are not departing from the utility model
Principle and objective in the case of above-described embodiment can be changed in the scope of the utility model, change, replace and
Modification.The scope of the utility model is extremely equally limited by appended claims.
Claims (7)
1. one kind four crack H grade insulation dry transformers, which is characterized in that including insulator body, assembly iron core, high-tension coil,
Low-voltage coil, high-voltage connection, low-voltage lead, wind turbine, blower rack,
Insulator body is internally provided with assembly iron core, and assembly iron core is made of multiple core assemblies, the outside of each core assembly from
Top to bottm is equipped with multigroup high-voltage coil and low-voltage coil group successively, high-tension coil, low-voltage coil is designed in every group of high-voltage coil and low-voltage coil group, and high
Crimping circle be arranged high-voltage connection that the high-tension coil in the inside of low-voltage coil, every group of high-voltage coil and low-voltage coil group is drawn respectively with
High-voltage connection interface connection in the upper end of insulator body is set, and the low-voltage coil in every group of high-voltage coil and low-voltage coil group is drawn low
Voltage lead wires are carried corresponding interface on the low-voltage lead terminal plate in portion on the body in insulator and are connected with being arranged respectively；The bottom of insulator body
Equipped with multiple blower fan groups, is set in each blower fan group there are two the wind turbine for the bottom front and rear sides for being separately positioned on insulator body and consolidated
Determine the fan supporter of wind turbine.
2. four cracking H grade insulation dry transformers as described in claim 1, it is characterised in that：The top of the insulator body
It is additionally provided with temperature controller, the temperature controller selects thermocouple temperature transmitter.
3. four cracking H grade insulation dry transformers as described in claim 1, it is characterised in that：The assembly iron core is by 3 iron
Core assembly is integrally formed.
4. four cracking H grade insulation dry transformers as claimed in claim 3, it is characterised in that：The outside of each core assembly
It is equipped with 4 groups of high-voltage coil and low-voltage coil groups successively from top to bottom.
5. four cracking H grade insulation dry transformers as described in claim 1, it is characterised in that：The top of the insulator body
It is additionally provided with epoxy tube, the epoxy tube is sleeved on the outside of high-voltage connection.
6. four cracking H grade insulation dry transformers as described in claim 1, it is characterised in that：The lower part of the insulator body
It is additionally provided with ground interface, and ground interface is grounded.
7. four cracking H grade insulation dry transformers as described in claim 1, it is characterised in that：The insulator body is selected
Nomex isolits.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820061982.9U CN207719011U (en) | 2018-01-15 | 2018-01-15 | Four cracking H grade insulation dry transformers |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820061982.9U CN207719011U (en) | 2018-01-15 | 2018-01-15 | Four cracking H grade insulation dry transformers |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207719011U true CN207719011U (en) | 2018-08-10 |
Family
ID=63051864
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820061982.9U Active CN207719011U (en) | 2018-01-15 | 2018-01-15 | Four cracking H grade insulation dry transformers |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207719011U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110223825A (en) * | 2019-06-18 | 2019-09-10 | 广东瑞智电力科技有限公司 | A kind of integrated transformer of dual output full capacity self coupling isolation |
-
2018
- 2018-01-15 CN CN201820061982.9U patent/CN207719011U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110223825A (en) * | 2019-06-18 | 2019-09-10 | 广东瑞智电力科技有限公司 | A kind of integrated transformer of dual output full capacity self coupling isolation |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN204315332U (en) | A kind of novel dry-type transformer | |
| CN207719011U (en) | Four cracking H grade insulation dry transformers | |
| CN201219183Y (en) | Large current and medium voltage switch cabinet | |
| CN207743029U (en) | A kind of quadripartion photovoltaic energy storage transformer | |
| CN204117774U (en) | A kind of transformer with split winding | |
| CN110364330A (en) | Inverter and transformer all-in-one machine | |
| CN205723093U (en) | A kind of 220kV SCOTT balance traction transformer winding construction | |
| CN208298665U (en) | Inverter and transformer all-in-one machine | |
| CN216597255U (en) | Transformer coil and three-phase three-column dry-type transformer | |
| CN212010700U (en) | Multi-branch photovoltaic double-split isolation transformer | |
| CN205984596U (en) | Polycrystalline silicon is dry -type transformer for electric stove | |
| CN209232563U (en) | A kind of three dimensional wound core natural grease Insulation Oil Transformer | |
| CN207424133U (en) | A kind of three-phase Y type heavy current testers | |
| CN209418279U (en) | A wide range of pressure regulation intermediate transformer | |
| CN208806133U (en) | A kind of four circuit photovoltaic power generation dry-type transformers | |
| CN207719005U (en) | H grade insulation dry transformers | |
| CN205789400U (en) | A kind of regulate and control to run special distribution transformer | |
| CN216482440U (en) | Super-high voltage working heat accumulator structure | |
| CN208889452U (en) | A kind of energy-efficient auto-transformer of Low ESR AT | |
| CN209266165U (en) | A kind of grid-connected photovoltaic power generation dry type transformer winding structure | |
| CN204465280U (en) | Wire wound asynchronous motor collector ring | |
| CN206819862U (en) | Photovoltaic transformer | |
| CN211742854U (en) | Multi-purpose transformer rack | |
| CN217847592U (en) | Insulating dry-type transformer | |
| CN211181937U (en) | Totally-enclosed large-current bus type current transformer |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |