CN204497044U - A kind of multistage adjustable-capacity traction transformer - Google Patents
A kind of multistage adjustable-capacity traction transformer Download PDFInfo
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- CN204497044U CN204497044U CN201520167360.0U CN201520167360U CN204497044U CN 204497044 U CN204497044 U CN 204497044U CN 201520167360 U CN201520167360 U CN 201520167360U CN 204497044 U CN204497044 U CN 204497044U
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- pressure winding
- low pressure
- high pressure
- switch
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Abstract
The utility model discloses a kind of multistage adjustable-capacity traction transformer, it comprises casing, two groups or three groups transformer device and the capacitance switchs comprising iron core, high pressure winding, low pressure winding, insulating part and hold down gag; High pressure and low pressure winding all adopt disc coil structure; Need high pressure corresponding to each capacity that export and low pressure winding wire turn place to draw centre tap at transformer, head end and end tap are drawn in two ends; Capacitance switch is made up of two the identical switches linked, the contact that each switch comprises the contact corresponding with each tap of high pressure winding or each tap of low pressure winding and adjacent two contacts can be electrically connected; Each centre tap correspondence of low pressure winding is connected on each contact of low pressure winding switch, and each centre tap correspondence of high pressure winding is connected on each contact of high pressure winding switch.The utility model can change volume output along with needs, to adapt to the needs of traction load change, improves resource utilization, reduces overall investment cost.
Description
Technical field
The utility model belongs to transformer technology field, relates to a kind of traction transformer.
Background technology
At present, in order to meet the demand of national economy and social development, require more and more higher to electric railway, the change of electric railway capacity, freight volume is very fast, traction load increases often to exceed to design to be predicted, make traction transformer often be in running overload state, affect the security of operation of traction transformer life-span and electric railway.For ensureing the needs of electric railway transport to traction power supply ability, adapt to the growth of capacity, freight volume, tractive power supply system has to carry out capacity expansion revamping, changes the traction transformer of larger capacity.Ordinary life due to traction transformer is generally 30 years, and the Capacity Expansion Project changing traction transformer is often significantly less than this cycle, causes the waste of up-front investment and resource.In addition, putting into operation, circuit carries out Capacity Expansion Project, will inevitably cause certain interference and impact, too increase the safe pressure of railway operation department to normal transport.
Utility model content
The purpose of this utility model solves the above-mentioned problems in the prior art exactly, there is provided a kind of multistage adjustable-capacity traction transformer, this traction transformer can change volume output along with needs, to adapt to the needs of traction load change, improve resource utilization, reduce overall investment cost.
For achieving the above object, technical solution of the present utility model is: a kind of multistage adjustable-capacity traction transformer, and it comprises casing, two groups or three groups transformer device and the capacitance switchs comprising iron core, high pressure winding, low pressure winding, insulating part and hold down gag; Two groups or three groups of transformer devices are connected in parallel on a capacitance switch, or two groups or three groups of transformer devices often organize connection capacitance switch, or three groups of transformer devices wherein two groups are connected in parallel on a capacitance switch, another group transformer device connects another capacitance switch; High pressure winding and low pressure winding all adopt disc coil structure, and iron core is in the inner side of low pressure winding, and high pressure winding is in the outside of low pressure winding; Need high pressure winding corresponding to each capacity that export and low pressure winding wire turn place to draw centre tap at transformer, head end and end tap are drawn in two ends; Capacitance switch is by two the identical switches linked: high pressure winding switch and low pressure winding switch form; The contact that each switch comprises the contact corresponding with each centre tap of high pressure winding or each centre tap of low pressure winding and adjacent two contacts can be electrically connected; Two stacked insulating mounting of switch, the position of its each contact is identical, and its two contact head insulated links; Each centre tap correspondence of low pressure winding is connected on each contact of low pressure winding switch, and each centre tap correspondence of high pressure winding is connected on each contact of high pressure winding switch; The head end of high pressure winding and low pressure winding and end tap are by lead-in wire lead-in bushing, and the sleeve pipe of high pressure winding terminal connects power end, and the sleeve pipe of low pressure winding terminal connects load end.
Each switch of capacitance switch described above is a disk, the outer rim of disk is arranged described each contact, and described contact is a ball contact that can be electrically connected with adjacent two contacts; The disc centre of two switches has an insulated central axle rotatably fixed with the center drilling of each disk, and the ball contact of two switches is connected on insulated central axle; Handle is drawn in the position of insulated central axle between two switches; This handle can be connected with the actuating unit making insulated central axle rotate.Like this, manually or the mechanism that turns on the power, just can rotating insulated central shaft, ball contact is rotated, change two contacts that ball contact connects, thus change the output capacity of traction transformer, adapt to the needs of traction load change, this capacitance switch structure is simple, simple to operation, connects reliable.
The radial extraction of each tap of high pressure winding described above, each tap of low pressure winding is by the gap axial lead between low pressure winding and high pressure winding.
Because the utility model have employed such scheme, regulate two contacts of capacitance switch interlock, just can change each centre tap of high pressure winding or each tapped link position of low pressure winding, thus change the coil turn of high pressure winding and low pressure winding, change the output capacity of traction transformer, to adapt to the needs of traction load change, just change when avoiding traction transformer not reach useful life, cause the unnecessary wasting of resources, which raises resource utilization, reduce overall investment cost.
Accompanying drawing explanation
Fig. 1 is the vertical view of the three grades of capacity transfer traction transformers comprising two-phase transformer device and a capacitance switch;
Fig. 2 is the vertical view of the three grades of capacity transfer traction transformers comprising three-phase transformer assembly and a capacitance switch;
Fig. 3 is the structural representation of capacitance switch in the utility model;
Fig. 4 is the AA cut-away view of Fig. 3;
Fig. 5 is the high pressure winding of transformer device or the catenation principle figure of low pressure winding and capacitance switch.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is further described.
Embodiment 1 as shown in Fig. 1, Fig. 3, Fig. 4 and Fig. 5, the present embodiment comprises casing 1, two groups and comprises the transformer device of iron core 2, high pressure winding 3, low pressure winding 4, insulating part 6 and hold down gag and three grades of capacitance switch 5(also can arrange other grade capacitance switchs such as two-stage, level Four, Pyatyi as required).The iron core 2 of two groups of transformer devices uses two columns of U-shaped iron core respectively, and it is connected in parallel on three grades of capacitance switchs 5.High pressure winding 3 and low pressure winding 4 all adopt disc coil structure, and iron core 2 is in the inner side of low pressure winding 4, and high pressure winding 3 is in the outside of low pressure winding 4.High pressure winding 3 and the low pressure winding 4 wire turn place of the two groups of transformer devices needing the capacity of 12500kVA, 16000kVA and 20000kVA that exports corresponding at transformer draw centre tap A2, A3, A4, A5 and a2, a3, a4, a5 respectively, and two ends draw head end and end tap A1, X1 and a1, x1 respectively.Three grades of capacitance switchs 5 are by two the identical switches linked: high pressure winding switch and low pressure winding switch form.Each switch is a disk 7, and the outer rim of disk 7 arranges contact K1, K2, K3, the K4 corresponding with each centre tap A2, A3, A4, A5 of high pressure winding 3 or each centre tap a2, a3, a4, a5 of low pressure winding 4.Contact is a ball contact 8 that can be electrically connected with adjacent two contact K1 and K2, K2 and K3, K3 and K4.Two stacked insulating mounting of switch, the position of its each contact K1, K2, K3, K4 is identical, there is an insulated central axle rotatably fixed with the center drilling of each disk 7 at disk 7 center of two switches, and the ball contact 8 of two switches is connected on insulated central axle.Handle is drawn in the position of insulated central axle between two switches; This handle can be connected with the actuating unit making insulated central axle rotate.Each centre tap a2, a3, a4, a5 correspondence of low pressure winding 4 is connected on each contact K1, K2, K3, K4 of low pressure winding switch, and each centre tap A2, A3, A4, A5 correspondence of high pressure winding 3 is connected on each contact K1, K2, K3, K4 of high pressure winding switch.The head end of high pressure winding 3 and low pressure winding 4 and end tap A1 and X1, a1 and x1 are by lead-in wire lead-in bushing, and the sleeve pipe of high pressure winding 3 end connects power end, and the sleeve pipe of low pressure winding 4 end connects load end.
Embodiment 2 as shown in Figure 2, the present embodiment comprises casing 1, three groups and comprises the transformer device of iron core 2, high pressure winding 3, low pressure winding 4, insulating part 6 and hold down gag and three grades of capacitance switch 5(also can arrange other grade capacitance switchs such as two-stage, level Four, Pyatyi as required).Three columns of the iron core that the iron core 2 of three groups of transformer devices uses one end to be connected as a single entity respectively, it is connected in parallel on three grades of capacitance switchs 5, and other structure is with embodiment 1.
Embodiment 3, the present embodiment comprises casing 1, two groups and comprises the transformer device of iron core 2, high pressure winding 3, low pressure winding 4, insulating part 6 and hold down gag and two three grades of capacitance switch 5(also can arrange other grade capacitance switchs such as two-stage, level Four, Pyatyi as required).Often organize transformer device to be connected on three grades of capacitance switchs 5.Other structure is with embodiment 1.
Embodiment 4, the present embodiment comprises casing 1, three groups and comprises the transformer device of iron core 2, high pressure winding 3, low pressure winding 4, insulating part 6 and hold down gag and three three grades of capacitance switch 5(also can arrange other grade capacitance switchs such as two-stage, level Four, Pyatyi as required).Three columns of the iron core that the iron core 2 of three groups of transformer devices uses one end to be connected as a single entity respectively; Often organize transformer device to be connected on three grades of capacitance switchs 5.Other structure is with embodiment 1.
Embodiment 5, the present embodiment comprises casing 1, three groups and comprises the transformer device of iron core 2, high pressure winding 3, low pressure winding 4, insulating part 6 and hold down gag and three three grades of capacitance switch 5(also can arrange other grade capacitance switchs such as two-stage, level Four, Pyatyi as required).Three columns of the iron core that the iron core 2 of three groups of transformer devices uses one end to be connected as a single entity respectively; Wherein two groups of transformer devices are connected in parallel on three grades of capacitance switchs 5, and another group transformer device is connected on another three grades of capacitance switchs 5.Other structure is with embodiment 1.
Above-described embodiment is only preferred and exemplary, and those skilled in the art can carry out the improvement of equivalent technologies according to the description of this patent, it is all in the protection range of this patent.
Claims (3)
1. a multistage adjustable-capacity traction transformer, it comprises casing, two groups or the three groups transformer devices comprising iron core, high pressure winding, low pressure winding, insulating part and hold down gag; It is characterized in that: it also comprises capacitance switch; Two groups or three groups of transformer devices are connected in parallel on a capacitance switch, or two groups or three groups of transformer devices often organize connection capacitance switch, or three groups of transformer devices wherein two groups are connected in parallel on a capacitance switch, another group transformer device connects another capacitance switch; High pressure winding and low pressure winding all adopt disc coil structure, and iron core is in the inner side of low pressure winding, and high pressure winding is in the outside of low pressure winding; Need high pressure winding corresponding to each capacity that export and low pressure winding wire turn place to draw centre tap at transformer, head end and end tap are drawn in two ends; Capacitance switch is by two the identical switches linked: high pressure winding switch and low pressure winding switch form; The contact that each switch comprises the contact corresponding with each centre tap of high pressure winding or each centre tap of low pressure winding and adjacent two contacts can be electrically connected; Two stacked insulating mounting of switch, the position of its each contact is identical, and its two contact head insulated links; Each centre tap correspondence of low pressure winding is connected on each contact of low pressure winding switch, and each centre tap correspondence of high pressure winding is connected on each contact of high pressure winding switch; The head end of high pressure winding and low pressure winding and end tap are by lead-in wire lead-in bushing, and the sleeve pipe of high pressure winding terminal connects power end, and the sleeve pipe of low pressure winding terminal connects load end.
2. multistage adjustable-capacity traction transformer according to claim 1, it is characterized in that: each switch of described capacitance switch is a disk, the outer rim of disk is arranged described each contact, described contact is a ball contact that can be electrically connected with adjacent two contacts; The disc centre of two switches has an insulated central axle rotatably fixed with the center drilling of each disk, and the ball contact of two switches is connected on insulated central axle; Handle is drawn in the position of insulated central axle between two switches; This handle can be connected with the actuating unit making insulated central axle rotate.
3. multistage adjustable-capacity traction transformer according to claim 1 and 2, is characterized in that: the radial extraction of each tap of described high pressure winding, and each tap of low pressure winding is by the gap axial lead between low pressure winding and high pressure winding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520167360.0U CN204497044U (en) | 2015-03-24 | 2015-03-24 | A kind of multistage adjustable-capacity traction transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520167360.0U CN204497044U (en) | 2015-03-24 | 2015-03-24 | A kind of multistage adjustable-capacity traction transformer |
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| Publication Number | Publication Date |
|---|---|
| CN204497044U true CN204497044U (en) | 2015-07-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520167360.0U Withdrawn - After Issue CN204497044U (en) | 2015-03-24 | 2015-03-24 | A kind of multistage adjustable-capacity traction transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204497044U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104700997A (en) * | 2015-03-24 | 2015-06-10 | 中铁电气工业有限公司保定铁道变压器分公司 | Multistage capacity-regulating traction transformer |
-
2015
- 2015-03-24 CN CN201520167360.0U patent/CN204497044U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104700997A (en) * | 2015-03-24 | 2015-06-10 | 中铁电气工业有限公司保定铁道变压器分公司 | Multistage capacity-regulating traction transformer |
| CN104700997B (en) * | 2015-03-24 | 2018-08-10 | 中铁电气工业有限公司保定铁道变压器分公司 | A kind of multistage adjustable-capacity tractive transformer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20150722 Effective date of abandoning: 20180810 |
|
| AV01 | Patent right actively abandoned |