CN203232791U - Autotransformer for reduced-voltage starting - Google Patents
Autotransformer for reduced-voltage starting Download PDFInfo
- Publication number
- CN203232791U CN203232791U CN 201320234055 CN201320234055U CN203232791U CN 203232791 U CN203232791 U CN 203232791U CN 201320234055 CN201320234055 CN 201320234055 CN 201320234055 U CN201320234055 U CN 201320234055U CN 203232791 U CN203232791 U CN 203232791U
- Authority
- CN
- China
- Prior art keywords
- coil
- iron core
- autotransformer
- reduced
- iron
- 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.)
- Expired - Fee Related
Links
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 68
- 229910052742 iron Inorganic materials 0.000 claims abstract description 17
- 229910000976 Electrical steel Inorganic materials 0.000 claims abstract description 7
- 239000003822 epoxy resin Substances 0.000 claims abstract description 4
- 229920000647 polyepoxide Polymers 0.000 claims abstract description 4
- 230000005855 radiation Effects 0.000 claims description 6
- 238000005516 engineering process Methods 0.000 claims description 5
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 4
- 229910052802 copper Inorganic materials 0.000 claims description 4
- 239000010949 copper Substances 0.000 claims description 4
- 238000007598 dipping method Methods 0.000 claims description 4
- 229910000831 Steel Inorganic materials 0.000 claims description 3
- 210000003298 dental enamel Anatomy 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 claims description 3
- 238000000034 method Methods 0.000 claims description 3
- 239000003973 paint Substances 0.000 claims description 3
- 229920003055 poly(ester-imide) Polymers 0.000 claims description 3
- 239000010959 steel Substances 0.000 claims description 3
- 238000005266 casting Methods 0.000 abstract 1
- 238000004458 analytical method Methods 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- 239000004922 lacquer Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
Images
Landscapes
- Iron Core Of Rotating Electric Machines (AREA)
Abstract
The utility model relates to the technical field of transformers, in particular to an autotransformer for reduced-voltage starting. The autotransformer at least comprises an iron core and coils, the coils are wound in the middle of the iron core, and a cross-over block is added in the middle of the contacting portion of each coil and the iron core. The autotransformer is characterized in that the iron core is made of silicon steel sheets by means of stacking, a seven-stage stepping seam is a 45-degree bias seam, a core-penetrating screw is arranged between an upper iron yoke and a lower iron yoke, and by-pass screws are arranged on two sides. Each coil is of a four-section cylindrical structure and integrally made of epoxy resin by means of vacuum casting, a radiating air path is formed at the center of each coil, and each coil is wound between the upper iron yoke and the lower iron yoke of the iron core. The autotransformer for reduced-voltage starting is applied to starting and running of motors, and has the advantages of small size, low noise, high efficiency, long service life and the like.
Description
Technical field
The utility model relates to the transformer technology field, is the autotransformer that a kind of reduced-voltage starting is used.
Background technology
When referring to motor start-up, reduced-voltage starting utilize autotransformer to reduce the starting resistor that is added on the motor stator winding.After treating motor start-up, motor and autotransformer are broken away from, thus normally operation under total head.
Its advantage of autotransformer is that the starting current that can allow selects the different taps of autotransformer to realize reduced-voltage starting with required detent torque, no matter and the stator winding of motor employing
YOr
ΔConnection can be used.So it is very extensive that this equipment and Starting mode are used in industrial and mining enterprises.
At present domestic autotransformer mostly is the oil immersed type autotransformer, and be characterized in: volume is big, and it is bad dispel the heat, can not frequent starting, and the life-span is short, needs constantly maintenance.
The utility model content
The purpose of this utility model provides the autotransformer that a kind of reduced-voltage starting is used, and is applied in the startup operation of motor, has advantages such as volume is little, noise is low, efficient is high, the life-span is long.
The technical solution of the utility model is the autotransformer that a kind of reduced-voltage starting is used, which comprises at least iron core and coil, coil is wrapped in the middle part of iron core, be equipped with cross-over block in the middle of the contact portion of coil and iron core, it is characterized in that: iron core adopts the silicon steel sheet closed assembly to make, seven grades of stepping seams are 45 ° of mitres, are provided with core through screw rod in the middle of the upper and lower iron yoke, and both sides are provided with other screw rod; Coil adopts four cylindrical section formula structures, and coil integral body is formed by the epoxide resin vacuum cast, and hub of a spool is provided with the heat radiation air flue, and coil is wrapped between the upper and lower iron yoke of iron core.
Described iron core is to adopt the high magnetic conduction low-loss of the 27QG100 cold-rolled orientation silicon steel sheet closed assembly of Wuhan iron and steel production to form, and upper and lower iron yoke all is provided with clamping element, and clamping element is fixedlyed connected with upper and lower iron yoke by fishbolt; The whole vacuum paint dipping PROCESS FOR TREATMENT that adopts of iron core.
Described coil adopts the coiling of 180 ° of polyester-imide enamel covered wires of QZYB type to form, and public coil and series coil are divided into two kinds of wire gauges, and the centre is provided with the heat radiation air flue; Coil is provided with 100%, 80% and 65% 3 place's voltage tap, draws with copper outlet row respectively.
The lower yoke lower surface of described iron core is provided with footing.
Described cross-over block is handled through moistureproof and anti-corrosive technology.
Characteristics of the present utility model are: 1, iron core uses high magnetic conduction low-loss silicon steel sheet, and the special dipping lacquer of vacuum is handled, the huge noise when reducing the transformer startup.
2, coil is 4 cylindrical section formula structures, and vacuum pouring is provided with ventilating air passage, Stability Analysis of Structures, and appearance looks elegant, non-maintaining, long service life be the more important thing is the frequency of utilization that has improved product.
3, insulating part special processing, protection against the tide, antirust.
Description of drawings
Be further described below in conjunction with the utility model of embodiment:
Fig. 1 is the structural representation of the autotransformer used of a kind of reduced-voltage starting;
Fig. 2 is the structural representation of iron core;
Fig. 3 is the structural representation of coil.
Among the figure: 1, iron core; 2, coil; 3, cross-over block; 101, clamping element; 102, fishbolt; 103, footing; 201, copper outlet row; 202, heat radiation air flue.
Embodiment
As shown in Figure 1, the autotransformer used of a kind of reduced-voltage starting is made up of iron core 1, coil 2 and cross-over block 3.
As shown in Figure 2, iron core 1 is to adopt the high magnetic conduction low-loss of the 27QG100 cold-rolled orientation silicon steel sheet closed assembly of Wuhan iron and steel production to form, and seven grades of stepping seams are 45 ° of mitres.
Be provided with core through screw rod in the middle of the upper and lower iron yoke of iron core 1, both sides are provided with other screw rod, and core through screw rod and other screw rod go out to add cross-over block 3.
The upper and lower iron yoke of iron core 1 is fixedly connected with clamping element 101 by fishbolt 102, can realize clamping to iron core 1 by regulating fishbolt 102.
The lower yoke lower surface of iron core 1 is provided with footing 103, and footing 103 is used for fixing this autotransformer.
The iron core 1 whole vacuum paint dipping technology that adopts makes iron core 1 have the characteristic of low-loss, low noise and low temperature rise.
As shown in Figure 3, coil 2 adopts the coiling of 180 ° of polyester-imide enamel covered wires of QZYB type to form, and its structure is four cylindrical section formulas, and the public coil of coil 2 and series coil adopt two kinds of wire gauges, and the centre of coil 2 is provided with heat radiation air flue 202.
Coil is provided with 100%, 80% and 65% 3 place's voltage tap, draws with copper outlet row 201 respectively, during motor start-up, can adopt three kinds of different rated voltages to start.
The important technological parameters of the autotransformer that this reduced-voltage starting is used is as follows:
Institute's actuating motor rated voltage/frequency: 10KV/50HZ
Institute's actuating motor rated current: 45A
Institute's actuating motor power: 688KW
The direct starting current of institute's actuating motor: 231A
According to above technical parameter, during compensator starting that this reduced-voltage starting is used, adopt 100% retaining, the motor start-up electric current is 231A, adopts 80% grade, and the motor start-up electric current is 185A, adopts 65% grade, and the motor start-up electric current is 150A.
The parts that present embodiment is not described in detail and structure belong to well-known components and common structure or the conventional means of the industry, here not narration one by one.
Claims (5)
1. autotransformer that reduced-voltage starting is used, which comprises at least iron core (1) and coil (2), coil (2) is wrapped in the middle part of iron core (1), coil (2) and the middle cross-over block (3) that is equipped with of the contact portion of iron core (1), it is characterized in that: iron core (1) adopts the silicon steel sheet closed assembly to make, seven grades of stepping seams are 45 ° of mitres, are provided with core through screw rod in the middle of the upper and lower iron yoke, and both sides are provided with other screw rod; Coil (2) adopts four cylindrical section formula structures, and coil (2) is whole to be formed by the epoxide resin vacuum cast, and coil (2) center is provided with the heat radiation air flue, and coil (2) is wrapped between the upper and lower iron yoke of iron core (1).
2. the autotransformer of using according to a kind of reduced-voltage starting described in the claim 1, it is characterized in that: described iron core (1) is to adopt the high magnetic conduction low-loss of the 27QG100 cold-rolled orientation silicon steel sheet closed assembly of Wuhan iron and steel production to form, upper and lower iron yoke all is provided with clamping element (101), and clamping element (101) is fixedlyed connected with upper and lower iron yoke by fishbolt (102); The whole vacuum paint dipping PROCESS FOR TREATMENT that adopts of iron core (1).
3. the autotransformer of using according to a kind of reduced-voltage starting described in the claim 1, it is characterized in that: described coil (2) adopts the coiling of 180 ° of polyester-imide enamel covered wires of QZYB type to form, public coil and series coil are divided into two kinds of wire gauges, and the centre is provided with heat radiation air flue (202); Coil is provided with 100%, 80% and 65% 3 place's voltage tap, draws with copper outlet row (201) respectively.
4. the autotransformer of using according to a kind of reduced-voltage starting described in the claim 1, it is characterized in that: the lower yoke lower surface of described iron core (1) is provided with footing (103).
5. the autotransformer of using according to a kind of reduced-voltage starting described in the claim 1 is characterized in that: the moistureproof and anti-corrosive technology processing of described cross-over block (3) process.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320234055 CN203232791U (en) | 2013-05-03 | 2013-05-03 | Autotransformer for reduced-voltage starting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320234055 CN203232791U (en) | 2013-05-03 | 2013-05-03 | Autotransformer for reduced-voltage starting |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203232791U true CN203232791U (en) | 2013-10-09 |
Family
ID=49288897
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320234055 Expired - Fee Related CN203232791U (en) | 2013-05-03 | 2013-05-03 | Autotransformer for reduced-voltage starting |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203232791U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104658743A (en) * | 2015-03-18 | 2015-05-27 | 广州市一变电气设备有限公司 | Low-noise transformer |
| CN106024369A (en) * | 2016-07-04 | 2016-10-12 | 苏州吴变电气科技有限公司 | Laminated combination tooling for transformer |
| CN117423529A (en) * | 2023-12-19 | 2024-01-19 | 福建鸿泰达科技有限责任公司 | An autotransformer with step-down starting function |
-
2013
- 2013-05-03 CN CN 201320234055 patent/CN203232791U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104658743A (en) * | 2015-03-18 | 2015-05-27 | 广州市一变电气设备有限公司 | Low-noise transformer |
| CN106024369A (en) * | 2016-07-04 | 2016-10-12 | 苏州吴变电气科技有限公司 | Laminated combination tooling for transformer |
| CN117423529A (en) * | 2023-12-19 | 2024-01-19 | 福建鸿泰达科技有限责任公司 | An autotransformer with step-down starting function |
| CN117423529B (en) * | 2023-12-19 | 2024-03-19 | 福建鸿泰达科技有限责任公司 | An autotransformer with step-down starting function |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106655649B (en) | High-speed high-power density AC servo motor | |
| CN201504133U (en) | Digital mixed magnetic generator | |
| CN201868202U (en) | Variable-frequency speed regulating dry type rectifier transformer with stereoscopic rolled iron core | |
| CN102403106B (en) | single phase transformer | |
| CN105185539A (en) | Insulation dry-type transformer of 20kV voltage class | |
| CN203232791U (en) | Autotransformer for reduced-voltage starting | |
| CN204558201U (en) | 110kV and above three dimensional wound core open dry-type transformer | |
| CN110571021B (en) | Single-machine 24-pulse dry-type traction rectifier transformer with double-bridge winding mirror image arrangement | |
| CN204537815U (en) | Energy-saving oil immersed three dimensional wound core drive rectifier transformer | |
| CN201667277U (en) | Amorphous alloy epoxy dry transformer | |
| CN203377069U (en) | Coil of rolled iron core transformer | |
| CN2645196Y (en) | Iron core current-limiting reactor | |
| RU167099U1 (en) | TRANSFORMER CONVERTER THREE-PHASE MULTI-WIND | |
| CN202405075U (en) | Single-phase transformer | |
| CN101060260A (en) | Core winding for generator, motor and transformer | |
| CN201830050U (en) | Iron core winding for generator, motor or transformer | |
| CN204441047U (en) | 110kV level energy-saving oil immersed three dimensional wound core power transformer | |
| CN214279763U (en) | Axial double-split single-phase dry-type transformer | |
| CN205122368U (en) | Energy -efficient electric stove dry -type transformer of non -maintaining three -phase | |
| CN205123528U (en) | Novel three -phase asynchronous motor | |
| CN205080994U (en) | Insulating dry -type transformer of 20kV electric pressure | |
| CN204668107U (en) | A kind of novel energy-conserving oil immersion-type distribution transformer | |
| CN102347671A (en) | Cage type induction rotor capable of speed regulating operation | |
| CN109038868B (en) | Three-phase permanent magnet synchronous motor | |
| CN203632384U (en) | Brush motor rotor |
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: 20131009 Termination date: 20150503 |
|
| EXPY | Termination of patent right or utility model |