CN105702440A - General transformer for V/X and VV connection - Google Patents
General transformer for V/X and VV connection Download PDFInfo
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- CN105702440A CN105702440A CN201511010931.0A CN201511010931A CN105702440A CN 105702440 A CN105702440 A CN 105702440A CN 201511010931 A CN201511010931 A CN 201511010931A CN 105702440 A CN105702440 A CN 105702440A
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- 238000004804 winding Methods 0.000 claims abstract description 251
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 claims description 59
- 238000000605 extraction Methods 0.000 claims description 33
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 14
- 230000017105 transposition Effects 0.000 claims description 9
- 230000001360 synchronised effect Effects 0.000 claims description 5
- 229910052742 iron Inorganic materials 0.000 claims description 4
- 239000002699 waste material Substances 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 9
- 238000009413 insulation Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 239000000463 material Substances 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
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- 230000008569 process Effects 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
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- 238000012937 correction Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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- 238000012360 testing method Methods 0.000 description 1
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Classifications
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- 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
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- 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
- H01F27/2823—Wires
- H01F27/2828—Construction of conductive connections, of leads
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- 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
- H01F27/30—Fastening or clamping coils, windings, or parts thereof together; Fastening or mounting coils or windings on core, casing, or other support
- H01F27/306—Fastening or mounting coils or windings on core, casing or other support
Abstract
The invention provides a general transformer for V/X and VV connection, and relates to a transformer. Currently, when a power supply mode of the transformer needs to be changed, the transformer needs to be replaced and the cost is high. The general transformer comprises two single-phase transformers and a connection bar, wherein the connection bar is used for connecting a winding terminal; the single-phase transformers are synthesized into a traction transformer through a connection line; each of the two single-phase transformers comprises core limbs and windings; the windings wind the outside of the core limbs; concentrically arranged internal low-voltage winding, external low-voltage winding and high-voltage winding are arranged on one core limb; low-voltage connection terminals which are connected with the internal low-voltage windings and the external low-voltage windings are arranged on the connection bar; in a V/X connection mode, the internal low-voltage winding on one core limb is connected with the external low-voltage winding on another core limb of the same single-phase transformer in series; one single-phase transformer forms two low-voltage winding groups which are connected in series; and the high-voltage windings of the same single-phase transformer are connected in series. The interchangeability and the universality of the two transformers are achieved; and waste of existing resources is reduced.
Description
Technical field
The present invention relates to a kind of transformator, especially V/X and VV wiring general-purpose transformer。
Background technology
At present, the power supply mode adopting AT power supply mode and direct-furnish of China's high-speed electric railway, AT powers and generally selects V/X Connection Traction Transformer, and directly Vv Connection Traction Transformer is generally selected in power supply more。The selection of the power supply mode of whole Traction networks and select the connection type of which kind of tractive transformer, directly determines power supply quality and the power supply effect of tractive power supply system。When the power supply mode of transformator needs to change, it is necessary to transformator is substituted, and cost is high。
Summary of the invention
The technical assignment of the technical problem to be solved in the present invention and proposition is to carry out improving to prior art and improve, V/X and VV wiring general-purpose transformer is provided, to reach interchangeability and the versatility of two kinds of transformators, reduce the waste of existing resource, strengthen the linking between existing AT power supply mode and direct-furnish mode, it is ensured that the purpose of the suitability between the two simultaneously。For this, the present invention takes techniques below scheme。
V/X and VV wiring general-purpose transformer include two single-phase transformers, for connect winding connection end connection arrange, two single-phase transformers synthesize a tractive transformer by wiring, two single-phase transformers all include core limb and are around in outward the winding of core limb, one core limb is provided with the interior low pressure winding being arranged concentrically, outer low-voltage line group and high pressure winding, and the described row that connects is provided with the low-voltage wiring terminal being connected with interior low pressure winding, outer low-voltage line group terminals；When for the V/X mode of connection, low pressure winding and the outer low pressure windings in series on another core limb of same single-phase transformer on a core limb, a single-phase transformer forms the low pressure winding group of two series connection, the high pressure windings in series of same single-phase transformer；When the V/X mode of connection is converted to the VV mode of connection, adjust low pressure winding connection end in the annexation connected on row, the low-voltage wiring terminal being connected with the low pressure winding connection end in same iron core column is connected, makes two of the same single-phase transformer low pressure winding groups connected in parallel；High pressure winding connection remains unchanged。Reach interchangeability and the versatility of two kinds of transformators, reduce the waste of existing resource, strengthen the linking between existing AT power supply mode and direct-furnish mode, it is ensured that the suitability between the two simultaneously。
As improving further and supplementing technique scheme, present invention additionally comprises following additional technical feature。
Circular section single frame closing structure for being rolled by stalloy unshakable in one's determination, the unshakable in one's determination of single frame closing structure constitutes two core limbs and upper and lower iron yoke；One single-phase transformer sets the iron core of a single frame closing structure。The core construction of tractive transformer adopts rewinding material version, and stalloy consumption can be made to be obviously reduced, and open circuit loss reduces about 30%, and no-load current and transformer noise are obviously reduced, and is conducive to reducing overall volume, saves material。
The overall dimensions in two core limbs being made up of the iron core of single frame closing structure and the sectional area of upper and lower iron yoke and cross section is all equal。Just can be easy to process either directly through coiling, simple in construction。
Two single-phase transformers respectively the first single-phase transformer, the second single-phase transformer, same casing is located at by the first single-phase transformer, the second single-phase transformer；First single-phase transformer include the first core limb, the second core limb, be around in the first of the first core limb outward low pressure winding, with one heart outer be around in first low pressure winding the first outer low pressure winding, with one heart outer be around in the first outer low pressure winding the first high pressure winding, be around in the second of the second core limb outward low pressure winding, with one heart outer be around in second low pressure winding the second outer low pressure winding, concentric outside be around in the second high pressure winding of the second outer low pressure winding；Second single-phase transformer include third core post, four-limbed post, be around in the 3rd of third core post the outward low pressure winding, outer be with one heart around in the 3rd the 3rd of low pressure winding the outer low pressure winding, with one heart outer be around in the 3rd outer low pressure winding the 3rd high pressure winding, be around in the 4th of four-limbed post the outward low pressure winding, outer be with one heart around in the 4th the 4th of low pressure winding the outer low pressure winding, concentric outside be around in the 4th high pressure winding of the 4th outer low pressure winding；Low pressure winding and the second outer low pressure windings in series in first；Low pressure windings in series in first outer low pressure winding and second；First high pressure winding, the second high pressure windings in series；Low pressure winding and the 4th outer low pressure windings in series in 3rd；Low pressure windings in series in 3rd outer low pressure winding and the 4th；3rd high pressure winding, the 4th high pressure windings in series。
The first described single-phase transformer is AB phase transformer, and the second described single-phase transformer is BC phase transformer；The extraction of starting of the first high pressure winding connects line end as A；The last head of the first high pressure winding and the last head of the second high pressure winding are connected, the extraction of starting with the 3rd high pressure winding of starting of the second high pressure winding connects line end as B, the last head of the 3rd high pressure winding and the last head of the 4th high pressure winding are connected, and the extraction of starting of the 4th high pressure winding connects line end as C；In first, the extraction of starting of low pressure winding connects line end as a1, and in first, the last head of low pressure winding and the last head of the second outer low pressure winding are connected；The extraction of starting of the second outer low pressure winding connects line end as X1；The extraction of starting of the first outer low pressure winding connects line end as a2, and in the last head and second of the first outer low pressure winding, the last head of low pressure winding is connected；In second, the extraction of starting of low pressure winding connects line end as x2；In 3rd, the extraction of starting of low pressure winding connects line end as a3, and in the 3rd, the last head of low pressure winding and the last head of the 4th outer low pressure winding are connected；The extraction of starting of the 4th outer low pressure winding connects line end as x3；The extraction of starting of the 3rd outer low pressure winding connects line end as a4, and in the last head and the 4th of the 3rd outer low pressure winding, the last head of low pressure winding is connected；In 4th, the extraction of starting of low pressure winding connects line end as x4；A1 line end, x1 line end, a2 line end, x2 line end, a3 line end, x3 connect upper corresponding a1 phase low-voltage terminal that line end, x4 connect line end and connect row, x1 phase low-voltage terminal, a2 phase low-voltage terminal, x2 phase low-voltage terminal, a3 phase low-voltage terminal, x3 phase low-voltage terminal, a4 phase low-voltage terminal, the x4 phase low-voltage terminal of line end, a4 that connect that connect that connect that connect that connect that connect connects；A connect upper corresponding A phase HV Terminal that line end, C connect line end and connect row, B phase HV Terminal, the C phase HV Terminal of line end, B that connect connects；When the V/X mode of connection is converted to the VV mode of connection, between a1 phase low-voltage terminal with a2 phase low-voltage terminal, between x1 phase low-voltage terminal and x2 phase low-voltage terminal, between a3 phase low-voltage terminal and a4 phase low-voltage terminal, all increasing wire be connected between x3 phase low-voltage terminal and x4 phase low-voltage terminal, HV Terminal wiring is constant。
The x1 line end that connects connects with a2 line end, the x3 line end line end that connects with a4 that connects realizes coordinated transposition each through cross-buss self-transposition device, described cross-buss self-transposition device includes core body, helical lead wire passage offered by described core body wall, described helical lead wire passage includes the first helical lead wire passage and the second helical lead wire passage, the incoming line of the first helical lead wire passage and the second helical lead wire passage is respectively positioned on one of them end face of core body, the line outlet of the first helical lead wire passage and the second helical lead wire passage is respectively positioned on another end face of core body, first helical lead wire passage and the second helical lead wire passage spiral half cycle in the same direction in core body wall, make the incoming line of same helical lead wire passage and line outlet at the location swap of core body both ends of the surface。Replaced by the symmetrical chiasma of incoming line and line outlet and realize lead-in wire intersection automatic position-changing。
The cylindrical hole being axially provided with through in the middle of described core body, is provided with " Ⅹ " type keel shoe in the middle of described core body in the cylindrical hole run through。Through hole in the middle of core body is easy to insulating oil oil flow heat dissipation；" Ⅹ " type keel shoe is adopted to support, it is possible to allow core body be internally formed multiple oil and paper web is constituted the insulation barrier of big oil duct ground paper cylinder, fully ensured that the insulating properties between cross-buss。
First helical lead wire passage and the first helical lead wire passage along core body axially in the equidistant synchronous rotary of helical form in the same direction, and between distance remain constant。Helical lead wire passage along core body axially in the equidistant synchronous rotary of helical form in the same direction, between distance remain constant。The coordinated transposition of beeline can be realized by the mode of the equidistant synchronous rotary of helical form in the same direction。
Core body is provided with the small through hole of multiple radial direction, and described small through hole communicates with helical lead wire passage；The diameter of described small through hole is more than or equal to the diameter of helical lead wire passage。Article two, the lateral of helical lead wire passage is evenly distributed with multiple small through hole on two passes centrage, small through hole is perpendicular to core body side, the diameter of through hole is more than or equal to the diameter of helical lead wire passage, insulating oil can be facilitated to enter lead channels, electric current is had to pass through adstante febre at lead-in wire, take away heat by oil stream, play the effect of heat radiation。
Beneficial effect: (1) adopts box structure altogether so that the volume sum that single volume is single-phase much smaller than two；(2) transformer connection form is changed by external connection, more quickly with convenient；(3) this transfer principle is utilized, it is possible to make full use of the spare transformer in lifetime and transformator that house of correction is replaced, saved resource；(4) it is simultaneously suitable for 110kV or 220kV level V/X wiring and Vv Connection Traction Transformer, decreases the investment cost of later stage electric substation's upgrading。
Accompanying drawing explanation
Fig. 1 is the Vv connection principle schematic diagram of the present invention。
Fig. 2 is the V/X connection principle schematic diagram of the present invention。
Fig. 3 is the external cabling schematic diagram of the present invention。
Fig. 4 is the assembling schematic diagram of the cross-buss self-transposition device of the present invention。
Fig. 5 is the cross-buss self-transposition device side perspective structure schematic diagram of the present invention。
Fig. 6 is the cross-buss self-transposition device plan structure schematic diagram of the present invention。
In figure: 1 first core limb；2 second core limbs；3 third core posts；4 four-limbed posts；5 AB phase transformer；6 BC phase transformer；H1 the first high pressure winding；Low pressure winding in T1 first；The outer low pressure winding of F1 first；H2 the second high pressure winding；Low pressure winding in F2 second；The outer low pressure winding of T2 second；H3 the 3rd high pressure winding；Low pressure winding in T3 the 3rd；The outer low pressure winding of F3 the 3rd；H4 the 4th high pressure winding；Low pressure winding in F4 the 4th；The outer low pressure winding of T4 the 4th；A, B, C high-pressure side input；A1, a2, x1, x2, a3, a4, x3, x4 low pressure winding connection end；7-cross-buss self-transposition device；701-core body；702-helical lead wire passage；721-the first helical lead wire passage；722-the second helical lead wire passage；703-" Ⅹ " type keel shoe；704-gap；705-annular separation；706-small through hole；707-goes between；708-wire presss from both sides。H1-the first high pressure winding；H2-the second high pressure winding；H3-the 3rd high pressure winding；H4-the 4th high pressure winding；L1-the first low pressure winding；L2-the second low pressure winding；L3-the 3rd low pressure winding；L4-the 4th low pressure winding；D, e, f, g low pressure winding connection end。
Detailed description of the invention
Below in conjunction with Figure of description, technical scheme is described in further detail。
As shown in Figure 1, in Vv elementary diagram, including first core limb the 1, second core limb 2, third core post 3, four-limbed post 4 and be wound in the first high pressure winding H1 on rewinding material post, the first low pressure winding L1, the second high pressure winding H2, the second low pressure winding L2, the 3rd high pressure winding H3, the 3rd low pressure winding L3, the 4th high pressure winding H3, the 4th low pressure winding L4 with one heart, thus constitute AB phase transformer 5 first single-phase transformer and BC phase transformer 6 second two single-phase transformers of single-phase transformer。Wherein the first low pressure winding L1, the second low pressure winding L2, the 3rd low pressure winding L3, the 4th low pressure winding L4 all as the low pressure winding of Vv Connection Traction Transformer rotating around being formed on first core limb the 1, second core limb 2, third core post 3, four-limbed post 4, the first high pressure winding H1, the second high pressure winding H2, the 3rd high pressure winding H3, the 4th high pressure winding H4 are then all wound on the first low pressure winding L1, the second low pressure winding L2, the 3rd low pressure winding L3, the 4th low pressure winding L4 as the high voltage winding group of Vv Connection Traction Transformer respectively。
As in figure 2 it is shown, in V/X elementary diagram, low pressure winding L1, L2, L3, L4 in V/v elementary diagram respectively become two parts, and namely L1 is divided into F1 and T1；L2 is divided into F2 and T2；L3 is divided into F3 and T3；L4 is divided into F4 and T4, and meanwhile, low voltage terminal is also become 8 by original 4, is respectively as follows: a1, a2, a3, a4, x1, x2, x3, x4 terminals。Concrete structure is: the technical program includes the first single-phase transformer, the second single-phase transformer, and same casing is located at by the first single-phase transformer, the second single-phase transformer；First single-phase transformer includes first core limb the 1, second core limb 2, be around in the first of the first core limb 1 outward low pressure winding T1, with one heart outer be around in first low pressure winding T1 the first outer low pressure winding F1, with one heart outer be around in the first outer low pressure winding F1 the first high pressure winding H1, be around in the second of the second core limb 2 outward low pressure winding F2, with one heart outer be around in second low pressure winding F2 the second outer low pressure winding T2, concentric outside be around in the second high pressure winding H2 of the second outer low pressure winding T2；Second single-phase transformer include third core post 3, four-limbed post 4, be around in the 3rd of third core post 3 the outward low pressure winding T3, with one heart outer be around in the 3rd low pressure winding T3 the 3rd outer low pressure winding F3, with one heart outer be around in the 3rd outer low pressure winding F3 the 3rd high pressure winding H3, be around in the 4th of four-limbed post 4 the outward low pressure winding F4, with one heart outer be around in the 4th low pressure winding F4 the 4th outer low pressure winding T4, concentric outside be around in the 4th high pressure winding H4 of the 4th outer low pressure winding T4；The outer low pressure winding T2 series connection of low pressure winding T1 and the second in first；Low pressure winding F2 series connection in first outer low pressure winding F1 and the second；First high pressure winding H1, the second high pressure winding H2 series connection；The outer low pressure winding T4 series connection of low pressure winding T3 and the four in 3rd；Low pressure winding F4 series connection in 3rd outer low pressure winding F3 and the four；3rd high pressure winding H3, the 4th high pressure winding H4 series connection。
The first described single-phase transformer is AB phase transformer 5, and the second described single-phase transformer is BC phase transformer 6；The extraction of starting of the first high pressure winding H1 connects line end as A；The last head of the first high pressure winding H1 and the last head of the second high pressure winding H2 are connected, the extraction of starting with the 3rd high pressure winding H3 of starting of the second high pressure winding H2 connects line end as B, the last head of the 3rd high pressure winding H3 and the last head of the 4th high pressure winding H4 are connected, and the extraction of starting of the 4th high pressure winding H4 connects line end as C；In first, the extraction of starting of low pressure winding T1 connects line end as a1, and in first, the last head of low pressure winding T1 and the last head of the second outer low pressure winding T2 are connected；The extraction of starting of the second outer low pressure winding T2 connects line end as X1；The extraction of starting of the first outer low pressure winding F1 connects line end as a2, and in the last head and second of the first outer low pressure winding F1, the last head of low pressure winding F2 is connected；In second, the extraction of starting of low pressure winding F2 connects line end as x2；In 3rd, the extraction of starting of low pressure winding T3 connects line end as a3, and in the 3rd, the last head of low pressure winding T3 and the last head of the 4th outer low pressure winding T4 are connected；The extraction of starting of the 4th outer low pressure winding T4 connects line end as x3；The extraction of starting of the 3rd outer low pressure winding F3 connects line end as a4, and in the last head and the 4th of the 3rd outer low pressure winding F3, the last head of low pressure winding F4 is connected；In 4th, the extraction of starting of low pressure winding F4 connects line end as x4；A1 line end, x1 line end, a2 line end, x2 line end, a3 line end, x3 connect upper corresponding a1 phase low-voltage terminal that line end, x4 connect line end and connect row, x1 phase low-voltage terminal, a2 phase low-voltage terminal, x2 phase low-voltage terminal, a3 phase low-voltage terminal, x3 phase low-voltage terminal, a4 phase low-voltage terminal, the x4 phase low-voltage terminal of line end, a4 that connect that connect that connect that connect that connect that connect connects；A connect upper corresponding A phase HV Terminal that line end, C connect line end and connect row, B phase HV Terminal, the C phase HV Terminal of line end, B that connect connects；When the V/X mode of connection is converted to the VV mode of connection, between a1 phase low-voltage terminal with a2 phase low-voltage terminal, between x1 phase low-voltage terminal and x2 phase low-voltage terminal, between a3 phase low-voltage terminal and a4 phase low-voltage terminal, all increasing wire be connected between x3 phase low-voltage terminal and x4 phase low-voltage terminal, HV Terminal wiring is constant。
When V/X and Vv wiring general-purpose transformer is used in as Vv wiring transformer and directly to power, by binding post a1, a2, a3, a4, x1, x2, x3, x4 respectively by connecting row according to method as shown in Figure 3, securing member is utilized to be fixed on corresponding binding post, form 4 low-voltage wiring terminals d, e, f, g required for Vv wiring, then d, g or e, f, respectively as a pair ground connection, form the connection type needed for direct feeding system。
When V/X and Vv wiring general-purpose transformer as V/X wiring transformer be used in AT power time, as shown in Figure 3, connection row is removed from binding post a1, a2, a3, a4, x1, x2, x3, x4, then x1, a2 or a1, x2 is respectively as a pair ground connection, x3, a4 or a3, x4, respectively as a pair ground connection, form the connection type needed for AT power supply mode。
Intersecting wiring for convenience, x1 line end line end, the x3 line end line end that connects with a4 that connects that connects with a2 that connects realizes coordinated transposition each through cross-buss self-transposition device 7。Cross-buss self-transposition device 7, such as Fig. 4, 5, shown in 6, it includes core body 701, helical lead wire passage 702 offered by core body 701 wall, helical lead wire passage 702 includes the first helical lead wire passage 721 and the second helical lead wire passage 722, the incoming line of the first helical lead wire passage 721 and the second helical lead wire passage 722 is respectively positioned on one of them end face of core body 701, the line outlet of the first helical lead wire passage 721 and the second helical lead wire passage 722 is respectively positioned on another end face of core body 701, first helical lead wire passage 721 and the second helical lead wire passage 722 spiral half cycle in the same direction in core body 701 wall, make the incoming line of same helical lead wire passage and line outlet at the location swap of core body 701 both ends of the surface。
In order to realize lead-in wire intersection automatic position-changing easily, and it is easy to heat radiation, prevent the electric discharge between lead-in wire, better ensure the safe and stable operation of transformator, the cylindrical hole being axially provided with through in the middle of core body 701, the cylindrical hole run through in the middle of core body 701 is provided with " Ⅹ " type keel shoe 703, article two, the incoming line of helical lead wire passage 702 is positioned at one of them end face of core body 701, article two, the line outlet of helical lead wire passage 702 is positioned at another end face of core body 701, helical lead wire passage 702 along core body 701 axially in the equidistant synchronous rotary of helical form in the same direction, between distance remain constant, article two, helical lead wire passage incoming line and line outlet transposition, the lateral of every helical lead wire passage 702 is evenly distributed with 3 small through hole 706 on two passes centrage, small through hole 706 is perpendicular to core body 701 side, the diameter of the diameter of small through hole 706 and two helical lead wire passages 702 is equal, the position of core body 701 end face incoming line and line outlet is provided with the gap 704 more than helical lead wire passage 702, the inner side of the both ends of the surface of core body 701 is provided with the annular separation 705 higher than end face。
At the product design initial stage, according to the electric pressure of transformator and capacity, by determining the specification of leader cable 707 after calculating, it is then determined that helical lead wire passage 702 diameter ensure that leader cable 707 can pass through；According to transformer voltage grade, determine the insulation distance between leader cable 707, finally determine the arc length distance of helical lead wire passage 702, guarantee that insulation distance disclosure satisfy that test requirements document, by transformer arrangement figure, calculate the space length of helical lead wire passage 702 coordinated transposition place, then core body 701 length of reasonable selection cross-buss self-transposition device and the peripheral end face height dimension of core body 701。
In assembling process, two leader cables 707 being each passed through helical lead wire passage 702, then naturally draw along helical lead wire passage 702, the now transposition of two leader cables 707 completes in inside。
According to transformer voltage grade and insulation distance, determine the wire insulation thickness beyond cross-buss self-transposition device, import and export position at leader cable 707, control the length of taper well, press from both sides 708 finally by the wire being distributed in cross-buss self-transposition device both sides and clamp two leader cables 707, and make leader cable 707 be in the fully extended state, so that cross-buss self-transposition device is also at the state that a relative horizontal position is fixing。
After cross-buss self-transposition device installs, guarantee that running through cylindrical hole passage in the middle of the core body 701 at " Ⅹ " type keel shoe 703 place is without blocked state, guarantee can allow in each small through hole 706 insulating oil free-flow, take away in time ensureing that the heat of leader cable 707 is flowed by oil。
Figure 1 above, V/X and the VV wiring general-purpose transformer shown in 2,3,4,5,6 are specific embodiments of the invention; substantive distinguishing features of the present invention and progress are embodied; can according to actual use needs; under the enlightenment of the present invention; it is carried out the equivalent modifications of the aspect such as shape, structure, all at the row of the protection domain of this programme。
Claims (10)
1.V/X and VV wiring general-purpose transformer, it is characterised in that: include two single-phase transformers, for connect winding connection end connection arrange, two single-phase transformers synthesize a tractive transformer by wiring；Two single-phase transformers all include core limb and are around in outward the winding of core limb, one core limb is provided with the interior low pressure winding being arranged concentrically, outer low-voltage line group and high pressure winding, and the described row that connects is provided with the low-voltage wiring terminal being connected with interior low pressure winding, outer low-voltage line group terminals；When for the V/X mode of connection, low pressure winding and the outer low pressure windings in series on another core limb of same single-phase transformer on a core limb, a single-phase transformer forms the low pressure winding group of two series connection, the high pressure windings in series of same single-phase transformer；When the V/X mode of connection is converted to the VV mode of connection, adjust low pressure winding connection end in the annexation connected on row, the low-voltage wiring terminal being connected with the low pressure winding connection end in same iron core column is connected, makes two of the same single-phase transformer low pressure winding groups connected in parallel；High pressure winding connection remains unchanged。
2. V/X and VV wiring general-purpose transformer according to claim 1, it is characterised in that: the circular section single frame closing structure for being rolled by stalloy unshakable in one's determination, the unshakable in one's determination of single frame closing structure constitutes two core limbs and upper and lower iron yoke；One single-phase transformer sets the iron core of a single frame closing structure。
3. V/X and VV wiring general-purpose transformer according to claim 1, it is characterised in that: the overall dimensions in two core limbs being made up of the iron core of single frame closing structure and the sectional area of upper and lower iron yoke and cross section is all equal。
4. V/X and the VV wiring general-purpose transformer according to claim 1 or 2 or 3, it is characterised in that: two single-phase transformers respectively the first single-phase transformer, the second single-phase transformer, same casing is located at by the first single-phase transformer, the second single-phase transformer；First single-phase transformer includes the first core limb (1), second core limb (2), it is around in outward in the first of the first core limb (1) low pressure winding (T1), with one heart outer the first outer low pressure winding (F1) being around in first low pressure winding (T1), outer the first high pressure winding (H1) being around in the first outer low pressure winding (F1) with one heart, it is around in outward in the second of the second core limb (2) low pressure winding (F2), with one heart outer the second outer low pressure winding (T2) being around in second low pressure winding (F2), outer the second high pressure winding (H2) being around in the second outer low pressure winding (T2) with one heart；Second single-phase transformer includes third core post (3), four-limbed post (4), it is around in outward low pressure winding (T3) in the 3rd of third core post (3), with one heart outer the 3rd outer low pressure winding (F3) being around in the 3rd low pressure winding (T3), outer the 3rd high pressure winding (H3) being around in the 3rd outer low pressure winding (F3) with one heart, it is around in outward low pressure winding (F4) in the 4th of four-limbed post (4), with one heart outer the 4th outer low pressure winding (T4) being around in the 4th low pressure winding (F4), outer the 4th high pressure winding (H4) being around in the 4th outer low pressure winding (T4) with one heart；In first, low pressure winding (T1) is connected with the second outer low pressure winding (T2)；First outer low pressure winding (F1) is connected with low pressure winding (F2) in second；First high pressure winding (H1), the second high pressure winding (H2) series connection；In 3rd, low pressure winding (T3) is connected with the 4th outer low pressure winding (T4)；3rd outer low pressure winding (F3) is connected with low pressure winding (F4) in the 4th；3rd high pressure winding (H3), the 4th high pressure winding (H4) series connection。
5. V/X and VV wiring general-purpose transformer according to claim 4, it is characterised in that: the first described single-phase transformer is AB phase transformer (5), and the second described single-phase transformer is BC phase transformer (6)；The extraction of starting of the first high pressure winding (H1) connects line end as A；The last head of the first high pressure winding (H1) and the last head of the second high pressure winding (H2) are connected, the extraction of starting with the 3rd high pressure winding (H3) of starting of the second high pressure winding (H2) connects line end as B, the last head of the 3rd high pressure winding (H3) and the last head of the 4th high pressure winding (H4) are connected, and the extraction of starting of the 4th high pressure winding (H4) connects line end as C；In first, the extraction of starting of low pressure winding (T1) connects line end as a1, and in first, the last head of low pressure winding (T1) and the last head of the second outer low pressure winding (T2) are connected；The extraction of starting of the second outer low pressure winding (T2) connects line end as X1；The extraction of starting of the first outer low pressure winding (F1) connects line end as a2, and in the last head and second of the first outer low pressure winding (F1), the last head of low pressure winding (F2) is connected；In second, the extraction of starting of low pressure winding (F2) connects line end as x2；In 3rd, the extraction of starting of low pressure winding (T3) connects line end as a3, and in the 3rd, the last head of low pressure winding (T3) and the last head of the 4th outer low pressure winding (T4) are connected；The extraction of starting of the 4th outer low pressure winding (T4) connects line end as x3；The extraction of starting of the 3rd outer low pressure winding (F3) connects line end as a4, and in the last head and the 4th of the 3rd outer low pressure winding (F3), the last head of low pressure winding (F4) is connected；In 4th, the extraction of starting of low pressure winding (F4) connects line end as x4；A1 line end, x1 line end, a2 line end, x2 line end, a3 line end, x3 connect upper corresponding a1 phase low-voltage terminal that line end, x4 connect line end and connect row, x1 phase low-voltage terminal, a2 phase low-voltage terminal, x2 phase low-voltage terminal, a3 phase low-voltage terminal, x3 phase low-voltage terminal, a4 phase low-voltage terminal, the x4 phase low-voltage terminal of line end, a4 that connect that connect that connect that connect that connect that connect connects；A connect upper corresponding A phase HV Terminal that line end, C connect line end and connect row, B phase HV Terminal, the C phase HV Terminal of line end, B that connect connects；When the V/X mode of connection is converted to the VV mode of connection, between a1 phase low-voltage terminal with a2 phase low-voltage terminal, between x1 phase low-voltage terminal and x2 phase low-voltage terminal, between a3 phase low-voltage terminal and a4 phase low-voltage terminal, all increasing wire be connected between x3 phase low-voltage terminal and x4 phase low-voltage terminal, HV Terminal wiring is constant。
6. V/X and VV wiring general-purpose transformer according to claim 5, it is characterised in that: the x1 line end that connects connects with a2 coordinated transposition between line end, makes a1 line end, x1 connect line end, the x2 of line end, a2 that connect that connect connect line end by along being arranged in order；The x3 line end that connects connects with a4 coordinated transposition between line end, makes a3 line end, x3 connect line end, the x4 of line end, a4 that connect that connect connect line end by along being arranged in order。
7. V/X and VV wiring general-purpose transformer according to claim 6, it is characterized in that: the x1 line end that connects connects with a2 line end, the x3 line end line end that connects with a4 that connects realizes coordinated transposition each through cross-buss self-transposition device, described cross-buss self-transposition device includes core body (701), helical lead wire passage (702) offered by described core body (701) wall, described helical lead wire passage (703) includes the first helical lead wire passage (721) and the second helical lead wire passage (722), the incoming line of the first helical lead wire passage (721) and the second helical lead wire passage (722) is respectively positioned on one of them end face of core body (701), the line outlet of the first helical lead wire passage (721) and the second helical lead wire passage (722) is respectively positioned on another end face of core body (701), first helical lead wire passage (721) and the second helical lead wire passage (722) spiral half cycle in the same direction in core body (701) wall, make the incoming line of same helical lead wire passage and line outlet at the location swap of core body (701) both ends of the surface。
8. V/X and VV wiring general-purpose transformer according to claim 7, it is characterised in that: the cylindrical hole being axially provided with through in the middle of described core body (701), the cylindrical hole run through in the middle of described core body (701) is provided with " Ⅹ " type keel shoe (703)。
9. V/X and VV wiring general-purpose transformer according to claim 7, it is characterized in that: the first helical lead wire passage (721) and the first helical lead wire passage (722) along core body (701) axially in the equidistant synchronous rotary of helical form in the same direction, and between distance remain constant。
10. V/X and VV wiring general-purpose transformer according to claim 7, it is characterised in that: core body is provided with the small through hole (706) of multiple radial direction, and described small through hole communicates with helical lead wire passage (702)；The diameter of described small through hole (706) is more than or equal to the diameter of helical lead wire passage (702)。
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Cited By (1)
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|---|---|
| CN105702440B (en) | 2018-01-19 |
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Effective date of registration: 20190423 Address after: 750000 No. 221 Xingyuan Road, Xingqing District, Yinchuan City, Ningxia Hui Autonomous Region Patentee after: WOLONG ELECTRIC YINCHUAN TRANSFORMER Co.,Ltd. Address before: 312300 No. 1801 Renmin West Road, Shangyu City, Shaoxing City, Zhejiang Province Co-patentee before: WOLONG ELECTRIC YINCHUAN TRANSFORMER Co.,Ltd. Patentee before: WOLONG ELECTRIC GROUP Co.,Ltd. |
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Denomination of invention: Universal Transformers for V/X and VV Wiring Effective date of registration: 20231127 Granted publication date: 20180119 Pledgee: Ningxia East Guarantee Co.,Ltd. Pledgor: WOLONG ELECTRIC YINCHUAN TRANSFORMER Co.,Ltd. Registration number: Y2023640000044 |
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