CN209496698U - Dry type bank electricity isolating transformer - Google Patents
Dry type bank electricity isolating transformer Download PDFInfo
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- CN209496698U CN209496698U CN201920415012.9U CN201920415012U CN209496698U CN 209496698 U CN209496698 U CN 209496698U CN 201920415012 U CN201920415012 U CN 201920415012U CN 209496698 U CN209496698 U CN 209496698U
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- isolating transformer
- bank electricity
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Abstract
The utility model relates to electric power power transformation or field of power distribution, it is intended to provide dry type bank electricity isolating transformer, its key points of the technical solution are that including winding and iron core, the iron core is seven grades of longitudinal full bias seam stacked structures, the winding is arranged towards the side close to the iron core, the winding is several and several layers lap wound conducting wire arrangement, and the lap wound conducting wire arrangement replaces once in the middle part of each layer of wire turn.The utility model is suitable for the security isolation between high-voltage frequency converter and connection between ship and bank system.
Description
Technical field
The utility model relates to electric power power transformation or field of power distribution, more specifically, it relates to dry type bank electricity isolating transformer.
Background technique
Use shipping shore power system that will reduce the pollutant discharge amount for the lay day that reaches port as auxiliary system power source,
Bank electricity system is made of substation, shore-based power supply system, connection between ship and bank system and boat-carrying by four part of electric system.Due to external ship
Oceangoing ship power supply system is different from China, and China's power frequency is 50Hz, and foreign countries supply frequency is 60Hz, so shore-based power supply system is answered
Have the function of output 60Hz and 50Hz power supply system, this function is generally realized using high-voltage frequency converter.In high-voltage frequency converter
Installation bank electricity isolating transformer is needed, also between connection between ship and bank system to improve product systems security isolation performance.
The loss of existing dry type bank electricity isolating transformer is larger, and dry type bank electricity isolating transformer is caused to be difficult to provide satisfaction
The operation rated frequency of shipping shore power system operating condition.
Utility model content
The purpose of the utility model is to provide dry type bank electricity isolating transformer, have the advantages that it is low-loss so that dry type
The operation rated frequency of bank electricity isolating transformer meets the operating condition of shipping shore power system.
The above-mentioned technical purpose of the utility model has the technical scheme that transformation is isolated in dry type bank electricity
Device, including winding and iron core, the iron core are seven grades of longitudinal full bias seam stacked structures, and the winding is towards close to the iron core
Side arrangement, the winding are several and several layers lap wound conducting wire arrangement, and the lap wound conducting wire arrangement is at every layer
Transposition is primary in the middle part of wire turn.
By using above-mentioned technical proposal, iron core is using seven grades of longitudinal full bias seam stacked structures, to reduce iron core seam
The magnetic flux density at place, make dry type bank electricity isolating transformer run on two kinds of frequencies of 50Hz, 60Hz power-supply system and iron core insatiable hunger
With；Meanwhile the inserted sheet working efficiency of iron core upper yoke being made to promote 2 times, no-load loss reduction 2-3%, the common three-level seam of noise ratio
Core construction reduces 3-5 decibels；Winding is several and several layers lap wound conducting wire arrangement and in lap wound conducting wire arrangement
Each layer of wire turn in the middle part of transposition it is primary so that the leakage field gesture that every parallel conducting wire generates in magnetic flux leakage is equal, and then parallel connection is led
Circulation will not be generated between line, the added losses of winding are effectively reduced, so that the operation of dry type bank electricity isolating transformer is specified
Frequency meets the operating condition of shipping shore power system.
Preferably, the upper yoke of the iron core and lower yoke are provided with folder in lateral location, and the folder is along transformation
The length direction of device is symmetrical arranged, and is fixed between the symmetrically arranged folder by bolt and nut.
By using above-mentioned technical proposal, folder plays the role of clamping the upper yoke and lower yoke of iron core, solid to support
Fixed core, meanwhile, the mechanical force that folder generates when being used to bear clamping force, lifting by crane the gravity and transformer short-circuit of body, with true
The electromagnetic performance for protecting iron core is not damaged, and then the operation rated frequency for being conducive to dry type bank electricity isolating transformer meets ship bank
The operating condition of electric system.
Preferably, the folder is square-tube type steel plate.
By using above-mentioned technical proposal, steel plate has many advantages, such as high-intensitive, corrosion-resistant, wear-resistant, can promote folder and hold
The ability of the mechanical force generated by clamping force, when lifting by crane the gravity and transformer short-circuit of body, is conducive to extend the use of folder
Service life reduces production cost.
Preferably, high-voltage line bank is provided on the winding, the surface of the high-voltage line bank is arranged with difference
The heat-shrink tube of color.
By using above-mentioned technical proposal, heat-shrink tube plays the role of protection to high-voltage line bank, meanwhile, different colours
Heat-shrink tube plays the role of identifying A phase, B phase and C phase, carries out wiring and inspection to dry type bank electricity isolating transformer convenient for operator
Survey operation.
Preferably, the iron core is crystal grain directional cold-rolling silicon steel disc.
By using above-mentioned technical proposal, iron core performance made of crystal grain directional cold-rolling silicon steel disc is good, and specific loss is small, into
And advantageously reduce the loss of dry type bank electricity isolating transformer.
Preferably, the lap wound conducting wire arrangement is provided with air flue between each layer of wire turn.
By using above-mentioned technical proposal, air flue is that the conducting wire of winding has reserved heat-dissipating space, so that the conducting wire of winding exists
The heat generated when work sheds in time, and then the temperature rise of winding reduces, and the resistance to shorting performance of dry type bank electricity isolating transformer mentions
It rises.
Preferably, the lower position of the winding is provided with blower.
By using above-mentioned technical proposal, the temperature rise of winding can be effectively reduced in blower, to play good heat dissipation to winding
Effect, and then the resistance to shorting performance boost of dry type bank electricity isolating transformer.
Preferably, the design temperature rise of the winding is 10K smaller than national regulations value.
By using above-mentioned technical proposal, the design temperature rise of winding is smaller, and the manufacturing cost of transformer is lower, dry type bank electricity
The design temperature rise of isolating transformer winding while meeting the harsh running environment of bank electricity system and requiring, reduce dry type bank electricity every
Manufacturing cost from transformer.
In conclusion the utility model has the following beneficial effects:
1, iron core reduces the magnetic flux density of iron core seam crossing using seven grades of longitudinal full bias seam stacked structures, meanwhile, make
The inserted sheet working efficiency of iron core upper yoke promotes 2 times, no-load loss reduction 2-3%, the common three-level seam core construction drop of noise ratio
3-5 decibels low, several on winding and several layers lap wound conducting wire arrangement are replaced in the middle part of each layer of wire turn once, with effective
The added losses for reducing winding, make the operation rated frequency of dry type bank electricity isolating transformer meet the work item of shipping shore power system
Part；
2, folder ensures that the electromagnetic performance of iron core is not damaged, and then is conducive to the operation of dry type bank electricity isolating transformer
Rated frequency meets the operating condition of shipping shore power system；
3, heat-shrink tube plays the role of protection and mark A phase, B phase, C phase to high-voltage line bank, in order to operator couple
Dry type bank electricity isolating transformer carries out wiring and detection operation；
4, iron core made of crystal grain directional cold-rolling silicon steel disc can reduce the loss of dry type bank electricity isolating transformer；
5, air flue is that the conducting wire of winding has reserved heat-dissipating space, so that the temperature rise of winding reduces, and then dry type bank electricity is isolated
The resistance to shorting performance boost of transformer；
6, the temperature rise of winding, and then the resistance to shorting performance boost of dry type bank electricity isolating transformer can be effectively reduced in blower；
7, make the design temperature rise of winding 10K smaller than national regulations value, to meet the harsh running environment requirement of bank electricity system
While, reduce the manufacturing cost of dry type bank electricity isolating transformer.
Detailed description of the invention
Fig. 1 is the overall schematic of dry type bank electricity isolating transformer；
Fig. 2 is the enlarged drawing of the A of Fig. 1；
Fig. 3 is the enlarged drawing of the B of Fig. 2.
In figure: 1, winding；2, iron core；3, folder；4, through-hole；5, screw rod；6, nut；7, high-voltage line bank；8, heat-shrink tube；
9, blower；10, rack.
Specific embodiment
The utility model is described in further detail below in conjunction with attached drawing.
Referring to Fig.1, it is dry type bank electricity isolating transformer disclosed by the utility model, including rack 10, is arranged in rack 10
There are the winding 1 of drum type brake and the iron core 2 (see Fig. 2) of laminated type, winding 1 is arranged around 2 coiling of iron core and towards the side close to iron core 2
Cloth, iron core 2 is by crystal grain directional cold-rolling silicon steel disc closed assembly at seven grades of longitudinal full bias seam stacked structures (see Fig. 3).
Winding 1 is three and two layers of lap wound conducting wire arrangement, and lap wound conducting wire arrangement replaces in the middle part of each layer of wire turn
Once, lap wound conducting wire arrangement is provided with air flue (not shown) between each layer of wire turn, and the design temperature rise of winding 1 compares state
Mark the small 10K of specified value.
The upper yoke and lower yoke of iron core 2 are provided with folder 3 in lateral location, and folder 3 is square-tube type steel plate, folder 3
Length direction along transformer is symmetrical arranged, and offers the through-hole 4 passed through for screw rod 5 on folder 3, symmetrically arranged folder 3 it
Between it is fixed by 5 nut 6 of screw rod, to clamp the upper yoke and lower yoke of iron core 2.
It is respectively connected with high-voltage line bank 7 between folder 3 and different windings 1, high-voltage line bank 7 is bent into " Z " word by copper bar
Type, high-voltage line bank 7 are fixed by bolt and nut, and the surface of high-voltage line bank 7 is arranged with the heat of yellow, green and red different colours
The draw 8, wherein yellow represents A phase, and green represents B phase, and red represents C phase.
The lower section of winding 1 is provided with blower 9 on the position of corresponding winding 1, and blower 9 is between the length direction of transformer
Every arranging and be fixedly mounted in rack 10.
The surface of dry type bank electricity isolating transformer is coated with antirust coat, so that dry type bank electricity isolating transformer is antiseptic and rustproof
Performance improves, and adapts to the wet environment of ship seashore.
The present embodiment has the beneficial effect that:
1,2 closed assembly of iron core is made at seven grades of longitudinal full bias seam stacked structures with reducing the magnetic flux density of 2 seam crossing of iron core
Dry type bank electricity isolating transformer runs on the power-supply system of two kinds of frequencies of 50Hz, 60Hz and iron core 2 is unsaturated；Meanwhile making iron core 2
The inserted sheet working efficiency of upper yoke promotes 2 times, no-load loss reduction 2-3%, common 2 structure of the three-level seam iron core reduction of noise ratio
3-5 decibels；Winding 1 is three and two layers of lap wound conducting wire arrangement and changes in the middle part of each layer of wire turn of lap wound conducting wire arrangement
Position is primary, so that the leakage field gesture that every parallel conducting wire generates in magnetic flux leakage is equal, and then ring will not be generated between parallel conducting wire
Stream, the added losses of winding 1 are effectively reduced, so that the operation rated frequency of dry type bank electricity isolating transformer meets ship shore electric
The operating condition of system；
2, folder 3 plays the role of clamping the upper yoke and lower yoke of iron core 2, to support fixed iron core 2, meanwhile, folder 3
The mechanical force generated when for bearing clamping force, lifting by crane the gravity and transformer short-circuit of body, to ensure the electromagnetic performance of iron core 2
It is not damaged；
3, folder 3 be square-tube type steel plate, have many advantages, such as it is high-intensitive, corrosion-resistant, wear-resistant, can be promoted folder 3 receiving press from both sides
Clamp force, the ability of mechanical force generated when lifting by crane the gravity and transformer short-circuit of body, be conducive to extend folder 3 uses the longevity
Life reduces production cost；
4, heat-shrink tube 8 plays the role of protection to high-voltage line bank 7, meanwhile, the heat-shrink tube 8 of different colours plays mark A
The effect of phase, B phase and C phase carries out wiring to dry type bank electricity isolating transformer convenient for operator and detection operates；
5,2 performance of iron core made of crystal grain directional cold-rolling silicon steel disc is good, and specific loss is small, and then advantageously reduces dry type bank
It is electrically isolated the loss of transformer；
6, air flue is that the conducting wire of winding 1 has reserved heat-dissipating space so that heat that the conducting wire of winding 1 generates at work and
When shed, and then winding 1 temperature rise reduce, the resistance to shorting performance boost of dry type bank electricity isolating transformer；
7, the temperature rise of winding 1 can be effectively reduced in blower, to play good heat dissipation effect, and then dry type bank electricity to winding 1
The resistance to shorting performance boost of isolating transformer；
8, the design temperature rise of winding 1 is smaller, and the manufacturing cost of transformer is lower, dry type bank electricity isolating transformer winding 1
Design temperature rise reduces the production system of dry type bank electricity isolating transformer while meeting the harsh running environment of bank electricity system and requiring
Cause this.
The embodiment of present embodiment is the preferred embodiment of the utility model, and not limitation is originally practical new according to this
The protection scope of type, therefore: the equivalence changes that all structures, shape, principle according to the utility model are done should all be covered by practical
Within novel protection scope.
Claims (8)
1. dry type bank electricity isolating transformer, including winding (1) and iron core (2), it is characterized in that: the iron core (2) is seven grades of longitudinal directions
Full bias seam stacked structure, the winding (1) towards close to the iron core (2) side arrange, the winding (1) be several simultaneously
Several layers lap wound conducting wire arrangement, the lap wound conducting wire arrangement replace once in the middle part of each layer of wire turn.
2. dry type bank electricity isolating transformer according to claim 1, it is characterized in that: the upper yoke of the iron core (2) is under
Iron yoke is provided with folder (3) in lateral location, and the folder (3) is symmetrical arranged along the length direction of transformer, is symmetrical arranged
The folder (3) between it is fixed by screw rod (5) nut (6).
3. dry type bank electricity isolating transformer according to claim 2, it is characterized in that: the folder (3) is square-tube type steel plate.
4. dry type bank electricity isolating transformer according to claim 1, it is characterized in that: being provided with height on the winding (1)
Compression bonded line arranges (7), and the surface of the high-voltage line bank (7) is arranged with the heat-shrink tube (8) of different colours.
5. dry type bank electricity isolating transformer according to claim 1, it is characterized in that: the iron core (2) is that crystal grain orientation is cold
Roll silicon steel sheet.
6. dry type bank electricity isolating transformer according to claim 1, it is characterized in that: the lap wound conducting wire arrangement is every
Layer line turn-to-turn is provided with air flue.
7. dry type bank electricity isolating transformer according to claim 6, it is characterized in that: the lower position of the winding (1) is equal
It is provided with blower (9).
8. dry type bank electricity isolating transformer according to claim 7, it is characterized in that: the design temperature rise ratio of the winding (1)
The small 10K of national regulations value.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920415012.9U CN209496698U (en) | 2019-03-28 | 2019-03-28 | Dry type bank electricity isolating transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920415012.9U CN209496698U (en) | 2019-03-28 | 2019-03-28 | Dry type bank electricity isolating transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209496698U true CN209496698U (en) | 2019-10-15 |
Family
ID=68157699
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920415012.9U Active CN209496698U (en) | 2019-03-28 | 2019-03-28 | Dry type bank electricity isolating transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209496698U (en) |
-
2019
- 2019-03-28 CN CN201920415012.9U patent/CN209496698U/en active Active
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