CN204596595U - A kind of oil-immersed transformer high-voltage coils outlet deriving structure - Google Patents
A kind of oil-immersed transformer high-voltage coils outlet deriving structure Download PDFInfo
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- CN204596595U CN204596595U CN201520342624.1U CN201520342624U CN204596595U CN 204596595 U CN204596595 U CN 204596595U CN 201520342624 U CN201520342624 U CN 201520342624U CN 204596595 U CN204596595 U CN 204596595U
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- 230000004888 barrier function Effects 0.000 claims abstract description 17
- 239000000123 paper Substances 0.000 claims description 26
- 238000009413 insulation Methods 0.000 abstract description 18
- 230000000694 effects Effects 0.000 abstract description 12
- 239000003921 oil Substances 0.000 description 24
- 238000004804 winding Methods 0.000 description 11
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 4
- 229910000976 Electrical steel Inorganic materials 0.000 description 4
- 239000010949 copper Substances 0.000 description 4
- 229910052802 copper Inorganic materials 0.000 description 4
- 238000007654 immersion Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000000605 extraction Methods 0.000 description 3
- 238000007599 discharging Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000011810 insulating material Substances 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000005674 electromagnetic induction Effects 0.000 description 1
- 239000002828 fuel tank Substances 0.000 description 1
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
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- Insulating Of Coils (AREA)
Abstract
The utility model provides a kind of oil-immersed transformer high-voltage coils outlet deriving structure, belongs to oil-filled transformer technical field.It solve the problem that insulation effect is low and cost is high that oil-immersed transformer high-voltage coils outlet is drawn.This oil-immersed transformer high-voltage coils outlet deriving structure comprises insulating cylinder one, insulating cylinder two, corrugation paper web, inner horn ring and the outer square ring being socketed in inner horn ring outside, high-tension coil both sides are all arranged at intervals with some insulating barriers, grafting gap is formed between adjacent two insulating barriers, the insulating cover of inner horn ring and the insulating cover of outer square ring are plugged in described grafting gap respectively, the outside sheathed insulating cylinder one of terminal of high-tension coil, insulating cylinder one is through the sleeve of inner horn ring, the bush outer sleeve of outer square ring establishes insulating cylinder two, insulating cylinder one, the sleeve of inner horn ring, corrugation paper web is all filled with between the sleeve of outer square ring and insulating cylinder two.The insulation effect that this structure makes oil-immersed transformer high-voltage coils outlet draw improves and cost reduces.
Description
Technical field
The utility model belongs to oil-filled transformer technical field, relates to a kind of oil-immersed transformer high-voltage coils outlet deriving structure.
Background technology
Transformer utilizes the principle of electromagnetic induction to change the device of alternating voltage, and the high-tension coil of transformer needs to draw and is connected with high pressure firewire cable, thus is incorporated in average family by the high-tension electricity after transformation.Transformer has many types, wherein uses comparatively generally oil-filled transformer.Oil-filled transformer, its main feature is that iron core and winding are immersed in iknsulating liquid, thus improves radiating effect and the insulation effect of transformer.During oil-filled transformer assembling, its shell needs to be fixed by folder.
What current oil-filled transformer adopted usually is outlet structure in the middle part of high-tension coil, disclosed in Chinese patent literature application number be CN201020662489.6 Transformer Winding in the middle part of outlet Winding tap lead-in wire electric shielding structure.This Winding tap lead-in wire electric shielding structure comprises winding and screen, outlet and Winding tap wire bonds in the middle part of winding, the joint of portion's outlet and Winding tap wire bonds is wrapped and is provided with packed layer in the windings, packed layer is surrounded by above-mentioned screen, packed layer is insulation crimped paper, and screen is aluminium case.Although structure disclosed in this patent can to Transformer Winding tap lead wire electric shield, but because this transformer is middle part outlet structure, install very complicated and technological requirement is high when arranging insulating bodies and wrapping up, so in order to reduce in assembly difficulty prior art the insulation Jacket thickness often reduced transformer outlet structure, therefore in the middle part of transformer, outlet structure insulation margin is not very high, middle part outlet structure can increase fuel tank width simultaneously, cause copper, the corresponding increase of consumption of silicon steel and transformer oil, and coil winding workload is large, the corresponding raising of production cost.
Summary of the invention
There are the problems referred to above in the utility model for existing technology, propose a kind of oil-immersed transformer high-voltage coils outlet deriving structure, the technical problem that the utility model solves is that the insulation effect how making oil-immersed transformer high-voltage coils outlet draw improves and cost reduces.
The utility model is realized by following technical proposal: a kind of oil-immersed transformer high-voltage coils outlet deriving structure, oil-filled transformer comprises high-tension coil, it is characterized in that, this oil-immersed transformer high-voltage coils outlet deriving structure comprises insulating cylinder one, insulating cylinder two, corrugation paper web, inner horn ring and the outer square ring being socketed in inner horn ring outside, high-tension coil both sides are all arranged at intervals with some insulating barriers, grafting gap is formed between adjacent two insulating barriers, described inner horn ring and outer square ring include the insulating cover of bottom and are connected to the sleeve at insulating cover top, the insulating cover of described inner horn ring and the insulating cover of outer square ring are plugged in respectively in described grafting gap and cover high-tension coil top, the upper end of described high-tension coil has terminal, the outside sheathed insulating cylinder one of described terminal, insulating cylinder one is through the sleeve of inner horn ring, the bush outer sleeve of outer square ring establishes insulating cylinder two, between described insulating cylinder one and the sleeve of inner horn ring, between the sleeve of inner horn ring and the sleeve of outer square ring, corrugation paper web is all filled with between the sleeve of outer square ring and insulating cylinder two.
Outlet is carried out by the high-tension coil upper end at oil-filled transformer, exterior angle ring set is connected on the outside of inner horn ring, the insulating cover of inner horn ring and the insulating cover of outer square ring respectively corresponding being plugged in grafting gap cover high-tension coil top, the outer sheathed insulating cylinder one through inner horn ring sleeve of terminal of high-tension coil upper end, the bush outer sleeve of square ring establishes insulating cylinder two outside, and at insulating cylinder one, the sleeve of inner horn ring, corrugation paper web is filled between two above-mentioned parts adjacent in the sleeve of outer square ring and insulating cylinder two, thus form an overall technical scheme and solve above-mentioned technical problem.The terminal of high-tension coil upper end is connected with high pressure firewire cable in insulating cylinder one, and link is connected by branch sleeve.High-tension coil upper end is carried out outlet and is avoided increase oil tank for oil immersion type transformer width, does not therefore need the other increase of copper, silicon steel and transformer oil consumption, thus cost is reduced.Substantially increase insulation effect by arranging inner horn ring, outer square ring, insulating cylinder one, insulating cylinder two and corrugation paper web, the mutual alignment simultaneously between them is arranged only to be needed mutually to be socketed, and requires low, therefore assemble very convenient to assembly precision.
In above-mentioned oil-immersed transformer high-voltage coils outlet deriving structure, the insulating cover of described inner horn ring and the insulating cover of outer square ring include the flat board with two arc-shaped sides, described dull and stereotyped two arc-shaped sides are formed for being plugged in the plate in described grafting gap respectively to downward-extension, and described dull and stereotyped upper surface is provided with hollow sleeve.Inner horn ring is roughly the same with the planform of outer square ring, is only that size is different.Inner horn ring and outer square ring are insulating material.It is extraction for the ease of high-tension coil outlet that inner horn ring and outer square ring all have insulating cover and sleeve, and insulating cover and sleeve can carry out a covering to high-tension coil outlet, avoid the electric discharge that high-tension coil is a large amount of.
In above-mentioned oil-immersed transformer high-voltage coils outlet deriving structure, described sleeve and horizontal plane have a certain degree, and this angular range is 45 degree ~ 70 degree.Sleeve and horizontal plane have a certain degree in order to avoid discharging from the high-tension coil caused close to too with the folder of oil-filled transformer.
In above-mentioned oil-immersed transformer high-voltage coils outlet deriving structure, described insulating barrier comprises fagging and soft cardboard, and fagging is close to by soft cardboard.Fagging supports soft cardboard, and fagging and the soft cooperation of soft cardboard form insulating barrier, and plugging of inner horn ring and outer square ring is convenient in this setting.
In above-mentioned oil-immersed transformer high-voltage coils outlet deriving structure, this oil-immersed transformer high-voltage coils outlet deriving structure also comprises inner support cylinder and outer support cylinder, the upper surface of the described lower surface of inner support cylinder and the sleeve of inner horn ring against, the upper surface of the lower surface of described outer support cylinder and the sleeve of outer square ring against.Inner support cylinder and outer support cylinder are insulating material, and increasing inner support cylinder and outer support cylinder one is can the effect of supports insulative cylinder one, two be can increase corrugation paper web length thus also improve insulation effect.
In above-mentioned oil-immersed transformer high-voltage coils outlet deriving structure, the upper surface of described inner support cylinder, outer support cylinder, corrugation paper web and insulating cylinder two all flushes, and the lower surface of described corrugation paper web, insulating cylinder two flushes.Supported by inner support cylinder, outer support cylinder and insulating cylinder two pairs of corrugation paper webs and insulating cylinder one, the sleeve of insulating cylinder two pairs of inner horn rings and outer square ring, inner support cylinder, outer support cylinder and corrugation paper web carry out coated, avoid above-mentioned loose-parts, scatter.
Compared with prior art, this oil-immersed transformer high-voltage coils outlet deriving structure has the following advantages:
1, the utility model arranges multi layer insulation, and assembling improves the insulation effect of high-tension coil outlet simultaneously greatly after simply cooperatively interacting.
2, the utility model carries out outlet by high-tension coil upper end and avoids and increase oil tank for oil immersion type transformer width, does not therefore need the other increase of copper, silicon steel and transformer oil consumption, thus cost is reduced.
Accompanying drawing explanation
Fig. 1 is the sectional structure schematic diagram of this oil-immersed transformer high-voltage coils outlet deriving structure;
Fig. 2 is the enlarged diagram of part A in Fig. 1;
Fig. 3 is the enlarged diagram of part B in Fig. 1;
Fig. 4 is the perspective view of the inner horn ring of this oil-immersed transformer high-voltage coils outlet deriving structure;
Fig. 5 is the perspective view of the inner horn ring of this oil-immersed transformer high-voltage coils outlet deriving structure.
In figure, 1, high-tension coil; 2, terminal; 3, inner horn ring; 4, outer square ring; 5, insulating cylinder one; 6, insulating cylinder two; 7, corrugation paper web; 8, sleeve; 9, insulating cover; 10, dull and stereotyped; 11, plate; 12, insulating barrier; 12a, fagging; 12b, soft cardboard; 13, inner support cylinder; 14, outer support cylinder; 15, high pressure firewire cable; 16, branch sleeve; 17, folder.
Embodiment
Be below specific embodiment of the utility model and by reference to the accompanying drawings, the technical solution of the utility model is further described, but the utility model be not limited to these embodiments.
Oil-filled transformer comprises high-tension coil 1.As shown in Fig. 1 to 5, this oil-immersed transformer high-voltage coils outlet deriving structure comprises insulating cylinder 1, insulating cylinder 26, corrugation paper web 7, inner horn ring 3 and is socketed in the outer square ring 4 of inner horn ring 3 outside.High-tension coil 1 both sides are all arranged at intervals with some insulating barriers 12, form grafting gap between adjacent two insulating barriers 12, and the insulating barrier 12 of the every side of high-tension coil 1 is at least 3.Insulating barrier 12 comprises fagging 12a and soft cardboard 12b, and soft cardboard 12b is close to fagging 12a.
Inner horn ring 3 and outer square ring 4 include the insulating cover 9 of bottom and are connected to the sleeve 8 at insulating cover 9 top, and the insulating cover 9 of inner horn ring 3 and the insulating cover 9 of outer square ring 4 are plugged in respectively in described grafting gap and cover high-tension coil 1 top.The insulating cover 9 of inner horn ring 3 and the insulating cover 9 of outer square ring 4 include the flat board 10 with two arc-shaped sides, and dull and stereotyped 10 two arc-shaped sides are formed for being plugged in the plate 11 in described grafting gap respectively to downward-extension, and dull and stereotyped 10 upper surfaces are provided with hollow sleeve 8.Sleeve 8 and horizontal plane have a certain degree, and this angular range is 45 degree ~ 70 degree.Sleeve 8 and horizontal plane have a certain degree in order to avoid discharging from the high-tension coil 1 caused close to too with the folder 17 of oil-filled transformer.
The shape of insulating barrier 12 and the matching form of plate 11 close, and be plugged in adjacent two insulating barriers 12 between corresponding with outer square ring 4 of inner horn ring 3 is formed in grafting gap.
The upper end of high-tension coil 1 has terminal 2, the outside sheathed insulating cylinder 1 of terminal 2, insulating cylinder 1 is through the sleeve 8 of inner horn ring 3, the outer sheathed insulating cylinder 26 of the sleeve 8 of outer square ring 4, is all filled with corrugation paper web 7 between the sleeve 8 of insulating cylinder 1 and inner horn ring 3, between the sleeve 8 of inner horn ring 3 and the sleeve 8 of outer square ring 4, between the sleeve 8 of outer square ring 4 and insulating cylinder 26.
This oil-immersed transformer high-voltage coils outlet deriving structure also comprises inner support cylinder 13 and outer support cylinder 14, the upper surface of the lower surface of inner support cylinder 13 and the sleeve 8 of inner horn ring 3 against, the upper surface of the lower surface of outer support cylinder 14 and the sleeve 8 of outer square ring 4 against.The upper surface of inner support cylinder 13, outer support cylinder 14, corrugation paper web 7 and insulating cylinder 26 all flushes, and the lower surface of corrugation paper web 7, insulating cylinder 26 flushes.
Outlet is carried out by high-tension coil 1 upper end at oil-filled transformer, outer square ring 4 is socketed in the outside of inner horn ring 3, the insulating cover 9 of inner horn ring 3 and the insulating cover 9 of outer square ring 4 respectively corresponding being plugged in grafting gap cover high-tension coil 1 top, the outer sheathed insulating cylinder 1 through inner horn ring 3 sleeve 8 of terminal 2 of high-tension coil 1 upper end, the outer sheathed insulating cylinder 26 of the sleeve 8 of square ring 4 outside, and at insulating cylinder 1, the sleeve 8 of inner horn ring 3, corrugation paper web 7 is filled between two above-mentioned parts adjacent in the sleeve 8 of outer square ring 4 and insulating cylinder 26, thus form an overall technical scheme and realize the object that insulation effect improves and cost reduces that oil-immersed transformer high-voltage coils 1 outlet draws.The terminal 2 of high-tension coil 1 upper end is connected with high pressure firewire cable 15 in insulating cylinder 1, and link is connected by branch sleeve 16.
Outlet is carried out in high-tension coil 1 upper end of oil-filled transformer, thus reduce the outlet difficulty of high-tension coil 1, high-tension coil 1 upper end carries out outlet simultaneously need not increase oil tank for oil immersion type transformer width, also just avoid the other increase of copper, silicon steel and transformer oil consumption, thus greatly reduce cost.
By arranging inner horn ring 3 and outer square ring 4 carries out basic insulation protection and extraction to high-tension coil 1 upper end outlet.The insulating cover 9 of inner horn ring 3 and the insulating cover 9 of outer square ring 4 first carry out an insulation to high-tension coil 1 top and cover, and the sleeve 8 of inner horn ring 3 sleeve 8 and outer square ring 4 is convenient to carry out an extraction to the outlet of high-tension coil 1.Because the voltage in high-tension coil 1 is very large, this oil-immersed transformer high-voltage coils outlet deriving structure arranges multi layer insulation to high-tension coil 1 terminal 2 place, the sheathed insulating cylinder 1 in terminal 2 place at high-tension coil 1 respectively, corrugation paper web 7 is filled with between insulating cylinder 1 and the sleeve 8 of inner horn ring 3, between the sleeve 8 and the sleeve 8 of outer square ring 4 of inner horn ring 3, corrugation paper web 7 is also set, and inner support cylinder 13 is set again and outer support cylinder 14 coordinates with the sleeve 8 of inner horn ring 3 and the sleeve 8 of outer square ring 4 respectively, outside sleeve 8 outside of square ring 4 a more sheathed insulating cylinder 26 for the sleeve 8 to inner horn ring 3 and outer square ring 4, inner support cylinder 13, outer support cylinder 14 and corrugation paper web 7 carry out coated, avoid above-mentioned loose-parts, scatter, simultaneously outside between the sleeve 8 of square ring 4 and insulating cylinder 26, corrugation paper web 7 is also set.
Insulation effect is substantially increased by arranging inner horn ring 3, outer square ring 4, inner support cylinder 13, outer support cylinder 14, insulating cylinder 1, insulating cylinder 26 and corrugation paper web 7, mutual alignment simultaneously between them is arranged only to be needed mutually to be socketed, require low to assembly precision, therefore assemble very convenient.
This oil-immersed transformer high-voltage coils outlet deriving structure arranges multi layer insulation, and assembling improves the insulation effect of high-tension coil 1 outlet greatly after simply cooperatively interacting simultaneously, carry out outlet by high-tension coil 1 upper end simultaneously and avoid increase oil tank for oil immersion type transformer width, thus cost is reduced.
Specific embodiment described herein is only to the explanation for example of the utility model spirit.The utility model person of ordinary skill in the field can make various amendment or supplements or adopt similar mode to substitute to described specific embodiment, but can't depart from spirit of the present utility model or surmount the scope that appended claims defines.
Although more employ the term such as high-tension coil 1, terminal 2, inner horn ring 3, outer square ring 4, insulating cylinder 1, insulating cylinder 26, corrugation paper web 7, sleeve 8, insulating cover 9, flat board 10, plate 11, insulating barrier 12, fagging 12a, soft cardboard 12b, inner support cylinder 13, outer support cylinder 14, high pressure firewire cable 15, branch sleeve 16, folder 17 herein, do not get rid of the possibility using other term.These terms are used to be only used to describe and explain essence of the present utility model more easily; The restriction that they are construed to any one additional is all contrary with the utility model spirit.
Claims (6)
1. an oil-immersed transformer high-voltage coils outlet deriving structure, oil-filled transformer comprises high-tension coil (1), it is characterized in that, this oil-immersed transformer high-voltage coils outlet deriving structure comprises insulating cylinder one (5), insulating cylinder two (6), corrugation paper web (7), inner horn ring (3) and be socketed in the outside outer square ring (4) of inner horn ring (3), high-tension coil (1) both sides are all arranged at intervals with some insulating barriers (12), grafting gap is formed between adjacent two insulating barriers (12), described inner horn ring (3) and outer square ring (4) include the insulating cover (9) of bottom and are connected to the sleeve (8) at insulating cover (9) top, the insulating cover (9) of described inner horn ring (3) and the insulating cover (9) of outer square ring (4) are plugged in respectively in described grafting gap and cover high-tension coil (1) top, the upper end of described high-tension coil (1) has terminal (2), the outside sheathed insulating cylinder one (5) of described terminal (2), insulating cylinder one (5) is through the sleeve (8) of inner horn ring (3), sleeve (8) the sheathed insulating cylinder two (6) outward of outer square ring (4), between described insulating cylinder one (5) and the sleeve (8) of inner horn ring (3), between the sleeve (8) of inner horn ring (3) and the sleeve (8) of outer square ring (4), corrugation paper web (7) is all filled with between the sleeve (8) of outer square ring (4) and insulating cylinder two (6).
2. oil-immersed transformer high-voltage coils outlet deriving structure according to claim 1, it is characterized in that, the insulating cover (9) of described inner horn ring (3) and the insulating cover (9) of outer square ring (4) include the flat board (10) with two arc-shaped sides, described flat board (10) two arc-shaped sides are formed for being plugged in the plate (11) in described grafting gap respectively to downward-extension, and described flat board (10) upper surface is provided with hollow sleeve (8).
3. oil-immersed transformer high-voltage coils outlet deriving structure according to claim 1 and 2, is characterized in that, described sleeve (8) and horizontal plane have a certain degree, and this angular range is 45 degree ~ 70 degree.
4. oil-immersed transformer high-voltage coils outlet deriving structure according to claim 3, it is characterized in that, described insulating barrier (12) comprises fagging (12a) and soft cardboard (12b), and fagging (12a) is close to by soft cardboard (12b).
5. oil-immersed transformer high-voltage coils outlet deriving structure according to claim 4, it is characterized in that, this oil-immersed transformer high-voltage coils outlet deriving structure also comprises inner support cylinder (13) and outer support cylinder (14), the upper surface of the lower surface of described inner support cylinder (13) and the sleeve (8) of inner horn ring (3) against, the upper surface of the lower surface of described outer support cylinder (14) and the sleeve (8) of outer square ring (4) against.
6. oil-immersed transformer high-voltage coils outlet deriving structure according to claim 5, it is characterized in that, the upper surface of described inner support cylinder (13), outer support cylinder (14), corrugation paper web (7) and insulating cylinder two (6) all flushes, and the lower surface of described corrugation paper web (7), insulating cylinder two (6) flushes.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520342624.1U CN204596595U (en) | 2015-05-25 | 2015-05-25 | A kind of oil-immersed transformer high-voltage coils outlet deriving structure |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201520342624.1U CN204596595U (en) | 2015-05-25 | 2015-05-25 | A kind of oil-immersed transformer high-voltage coils outlet deriving structure |
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| CN204596595U true CN204596595U (en) | 2015-08-26 |
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| CN201520342624.1U Expired - Fee Related CN204596595U (en) | 2015-05-25 | 2015-05-25 | A kind of oil-immersed transformer high-voltage coils outlet deriving structure |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108597805A (en) * | 2018-05-29 | 2018-09-28 | 保定天威保变电气股份有限公司 | A kind of high-power transformer high voltage winding terminal square ring structure |
| CN109742625A (en) * | 2019-03-08 | 2019-05-10 | 哈尔滨理工大学 | A kind of crude oil electric dewatering transformer high voltage flexible connecting device and its installation method |
| EP3809428A1 (en) * | 2019-10-18 | 2021-04-21 | Weidmann Holding AG | Carrier plate and barrier system comprising at least one such carrier plate |
| CN112908659A (en) * | 2021-03-22 | 2021-06-04 | 保定天威保变电气股份有限公司 | Valve side lead assembling structure and assembling method |
| CN114242432A (en) * | 2021-11-09 | 2022-03-25 | 天威保变（秦皇岛）变压器有限公司 | Vertical manufacturing method of converter transformer partition plate system |
-
2015
- 2015-05-25 CN CN201520342624.1U patent/CN204596595U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108597805A (en) * | 2018-05-29 | 2018-09-28 | 保定天威保变电气股份有限公司 | A kind of high-power transformer high voltage winding terminal square ring structure |
| CN109742625A (en) * | 2019-03-08 | 2019-05-10 | 哈尔滨理工大学 | A kind of crude oil electric dewatering transformer high voltage flexible connecting device and its installation method |
| CN109742625B (en) * | 2019-03-08 | 2023-06-06 | 哈尔滨理工大学 | High-voltage flexible connection device for crude oil electric dehydration transformer and installation method thereof |
| EP3809428A1 (en) * | 2019-10-18 | 2021-04-21 | Weidmann Holding AG | Carrier plate and barrier system comprising at least one such carrier plate |
| CN112908659A (en) * | 2021-03-22 | 2021-06-04 | 保定天威保变电气股份有限公司 | Valve side lead assembling structure and assembling method |
| CN114242432A (en) * | 2021-11-09 | 2022-03-25 | 天威保变（秦皇岛）变压器有限公司 | Vertical manufacturing method of converter transformer partition plate system |
| CN114242432B (en) * | 2021-11-09 | 2023-08-15 | 天威保变（秦皇岛）变压器有限公司 | Vertical manufacturing method of converter transformer baffle system |
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Granted publication date: 20150826 |