CN111540573A - Detachable high-voltage lead for connecting two transformers and connecting method - Google Patents

Detachable high-voltage lead for connecting two transformers and connecting method Download PDF

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Publication number
CN111540573A
CN111540573A CN202010511323.2A CN202010511323A CN111540573A CN 111540573 A CN111540573 A CN 111540573A CN 202010511323 A CN202010511323 A CN 202010511323A CN 111540573 A CN111540573 A CN 111540573A
Authority
CN
China
Prior art keywords
transformer
voltage
out head
detachable
transformers
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202010511323.2A
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Chinese (zh)
Inventor
张栋
谢京
范洪涛
刘东升
于素梅
石建
程丛明
张计英
程玉芳
龙腾
王晓朦
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Baoding Tianwei Baobian Electric Co Ltd
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Baoding Tianwei Baobian Electric Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Baoding Tianwei Baobian Electric Co Ltd filed Critical Baoding Tianwei Baobian Electric Co Ltd
Priority to CN202010511323.2A priority Critical patent/CN111540573A/en
Publication of CN111540573A publication Critical patent/CN111540573A/en
Pending legal-status Critical Current

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    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01FMAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00Details of transformers or inductances, in general
    • H01F27/28Coils; Windings; Conductive connections
    • H01F27/29Terminals; Tapping arrangements for signal inductances
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01FMAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00Details of transformers or inductances, in general
    • H01F27/08Cooling; Ventilating
    • H01F27/10Liquid cooling
    • H01F27/12Oil cooling
    • H01F27/14Expansion chambers; Oil conservators; Gas cushions; Arrangements for purifying, drying, or filling
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01FMAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00Details of transformers or inductances, in general
    • H01F27/28Coils; Windings; Conductive connections
    • H01F27/32Insulating of coils, windings, or parts thereof
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01FMAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F30/00Fixed transformers not covered by group H01F19/00
    • H01F30/06Fixed transformers not covered by group H01F19/00 characterised by the structure
    • H01F30/12Two-phase, three-phase or polyphase transformers
    • H01F30/14Two-phase, three-phase or polyphase transformers for changing the number of phases
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01FMAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F38/00Adaptations of transformers or inductances for specific applications or functions
    • H01F38/16Cascade transformers, e.g. for use with extra high tension

Abstract

The invention relates to a detachable high-voltage lead for connecting two transformers and a connecting method, and belongs to the technical field of transformers. The technical scheme is as follows: the high-voltage windings of the two transformers with the same voltage grade are connected; the high-voltage winding of two transformers sets up the high-pressure lead-out head respectively, uses corrugated type shaping insulating part to be connected and insulating with the oil tank between high-pressure lead-out head and the oil tank wall, uses detachable cable junction between the high-pressure lead-out head of two transformers, and the copper pipe shielding can be dismantled in the cable external use, can dismantle the copper pipe surface and set up the insulating layer in order to guarantee insulating properties. The invention realizes the electrical connection between two high-voltage windings with the same voltage grade in two transformers respectively, and saves the total occupied area of the high-voltage bushing for connecting the two transformers and the two transformers.

Description

Detachable high-voltage lead for connecting two transformers and connecting method
Technical Field
The invention relates to a detachable high-voltage lead for connecting two transformers and a connecting method, and belongs to the technical field of transformers.
Background
The high-voltage large-capacity phase-shifting transformer is composed of two transformers, namely a series transformer and an excitation transformer, wherein the high-voltage winding of the series transformer and the high-voltage winding of the excitation transformer have the same voltage grade and need to be connected with each other. The connection mode adopted by the prior art has the following problems: the connection is difficult to realize, the disassembly is not available, and the occupied area is large. Therefore, a detachable high-voltage connection structure is needed for connecting two high-voltage windings with the same voltage level and in two transformers respectively.
Disclosure of Invention
The invention aims to provide a detachable high-voltage lead for connecting two transformers and a connecting method thereof, which realize the electrical connection between two high-voltage windings with the same voltage grade in the two transformers respectively, save the total floor area of a high-voltage bushing for connecting the two transformers and the two transformers, are detachable and solve the technical problems in the prior art.
The technical scheme of the invention is as follows:
a detachable high-voltage lead for connecting two transformers comprises an oil tank wall of a first transformer, a corrugated molded insulating part of the first transformer, a high-voltage leading-out head of the first transformer, a detachable copper pipe, a detachable insulating layer, a connecting cable, a high-voltage leading-out head of another transformer, a corrugated molded insulating part of another transformer and an oil tank wall of another transformer; the high-voltage leading-out head of the first transformer is fixed on the oil tank wall of the first transformer through a corrugated type molding insulating part of the first transformer and is insulated from the oil tank wall of the first transformer; the high-voltage leading-out head of the other transformer is fixed on the oil tank wall of the other transformer through a corrugated type molding insulating piece of the other transformer and is insulated with the oil tank wall of the other transformer; the high-voltage winding of the two transformers is respectively connected with a high-voltage leading-out head of a first transformer and a high-voltage leading-out head of another transformer, the high-voltage leading-out head of the first transformer and the high-voltage leading-out head of another transformer are mechanically connected through a connecting cable, a detachable copper pipe is arranged outside the connecting cable, and a detachable insulating layer is arranged outside the detachable copper pipe.
In order to facilitate the operation, the connecting cable is divided into two sections, the first section is connected with a high-voltage leading-out head of a first transformer, the other section is connected with a high-voltage leading-out head of another transformer, and the two sections of connecting cables are connected together.
The detachable copper pipe is divided into three sections, the first section is sleeved at a connection point between a high-voltage leading-out head of a first transformer and a first section of connecting cable, the second section is sleeved at a connection point of the two sections of connecting cables, and the third section is sleeved at a connection point of another section of connecting cable and a high-voltage leading-out head of another transformer.
The detachable insulating layer is divided into three sections, the first section covers the outer surface of a connecting point of a high-voltage leading-out head of a first transformer and a first section connected detachable copper pipe, the third section covers the outer surface of a connecting point of a third section detachable copper pipe and a high-voltage leading-out head of another transformer, and the second section covers the outer surface of a second section detachable copper pipe between the first section and the third section detachable insulating layer.
A detachable high-voltage lead for connecting two transformers and a connecting method thereof comprise the following steps: the high-voltage windings of the two transformers with the same voltage grade are connected; the high-voltage winding of two transformers sets up the high-pressure lead-out head respectively, uses corrugated type shaping insulating part to be connected and insulating with the oil tank between high-pressure lead-out head and the oil tank wall, uses detachable cable junction between the high-pressure lead-out head of two transformers, and the copper pipe shielding can be dismantled in the cable external use, can dismantle the copper pipe surface and set up the insulating layer in order to guarantee insulating properties.
The technical problem solved by the invention is as follows: the two transformers with high-voltage windings of the same voltage grade realize the electrical connection of the high-voltage windings of the two transformers by arranging a detachable high-voltage connecting lead.
The invention has the beneficial effects that: the electric connection between two high-voltage windings with the same voltage level in two transformers is realized, the total floor area of the high-voltage bushing for connecting the two transformers and the two transformers is saved, and the high-voltage bushing is detachable.
Drawings
FIG. 1 is a schematic view of an embodiment of the present invention;
in the figure: the transformer comprises a first transformer oil tank wall 1, a first transformer corrugated molding insulating part 2, a first transformer high-voltage leading-out head 3, a detachable copper pipe 4, a detachable insulating layer 5, a connecting cable 6, a second transformer high-voltage leading-out head 7, a second transformer corrugated molding insulating part 8 and a second transformer oil tank wall 9.
Detailed Description
The invention is further illustrated by the following examples in conjunction with the accompanying drawings.
A detachable high-voltage lead for connecting two transformers comprises an oil tank wall 1 of a first transformer, a corrugated molded insulating part 2 of the first transformer, a high-voltage leading-out head 3 of the first transformer, a detachable copper pipe 4, a detachable insulating layer 5, a connecting cable 6, a high-voltage leading-out head 7 of another transformer, a corrugated molded insulating part 8 of another transformer and an oil tank wall 9 of another transformer; a high-voltage leading-out head 3 of a first transformer is fixed on the oil tank wall 1 of the first transformer through a corrugated type molding insulating part 2 of the first transformer and is insulated with the oil tank wall of the first transformer; the high-voltage leading-out head 7 of another transformer is fixed on the oil tank wall 9 of another transformer through the corrugated type molding insulating piece 8 of another transformer and is insulated with the oil tank wall of another transformer; the high-voltage winding of the two transformers is respectively connected with a high-voltage leading-out head 3 of a first transformer and a high-voltage leading-out head 7 of another transformer, the high-voltage leading-out head 3 of the first transformer and the high-voltage leading-out head 7 of another transformer are mechanically connected through a connecting cable 6, a detachable copper pipe 4 is installed outside the connecting cable 6, and a detachable insulating layer 5 is arranged outside the detachable copper pipe 4.
For the convenience of operation, the connecting cable 6 is divided into two sections, the first section is connected with the high-voltage leading-out head 3 of the first transformer, the other section is connected with the high-voltage leading-out head 7 of the other transformer, and the two sections of connecting cables are connected together.
The detachable copper pipe 4 is divided into three sections, the first section is sleeved at a connection point between the high-voltage leading-out head 3 of the first transformer and the first section of connecting cable, the second section is sleeved at a connection point of the two sections of connecting cables, and the third section is sleeved at a connection point between the other section of connecting cable and the high-voltage leading-out head 7 of the other transformer;
the detachable insulating layer 5 is divided into three sections, the first section covers the outer surface of a connecting point of the high-voltage leading-out head 3 of the first transformer and the first section connected detachable copper pipe, the third section covers the outer surface of a connecting point of the third section detachable copper pipe and the high-voltage leading-out head 7 of the other transformer, and the second section covers the outer surface of the second section detachable copper pipe between the first section and the third section detachable insulating layer.
A detachable high-voltage lead for connecting two transformers and a connecting method thereof comprise the following steps: the high-voltage windings of the two transformers with the same voltage grade are connected; the high-voltage winding of two transformers sets up the high-pressure lead-out head respectively, uses corrugated type shaping insulating part to be connected and insulating with the oil tank between high-pressure lead-out head and the oil tank wall, uses detachable cable junction between the high-pressure lead-out head of two transformers, and the copper pipe shielding can be dismantled in the cable external use, can dismantle the copper pipe surface and set up the insulating layer in order to guarantee insulating properties.
In the embodiment, the high-voltage windings of the two transformers are respectively provided with a high-voltage leading-out head 3 of a first transformer and a high-voltage leading-out head 7 of the other transformer, the high-voltage leading-out head 3 of the first transformer and the high-voltage leading-out head 7 of the other transformer are respectively fixed on and insulated from a fuel tank wall 1 of the first transformer and a fuel tank wall 9 of the other transformer through a corrugated type formed insulating part 2 of the first transformer and a corrugated type formed insulating part 8 of the other transformer, cables 6 are connected between the high-voltage leading-out heads through high-voltage leading-out heads for mechanical connection, detachable copper pipes 4 are installed outside the cables, and detachable insulating layers 5 are installed outside the detachable copper pipes 4. Therefore, the high-voltage windings of the two transformers are electrically connected through a detachable high-voltage lead composed of a high-voltage leading-out head, a connecting cable, a detachable copper pipe and an insulation system.

Claims (5)

1. The utility model provides a connect detachable high-voltage lead of two transformers which characterized in that: the transformer oil tank comprises an oil tank wall (1) of a first transformer, a corrugated type formed insulating part (2) of the first transformer, a high-voltage leading-out head (3) of the first transformer, a detachable copper pipe (4), a detachable insulating layer (5), a connecting cable (6), a high-voltage leading-out head (7) of another transformer, a corrugated type formed insulating part (8) of another transformer and an oil tank wall (9) of another transformer; a high-voltage leading-out head (3) of a first transformer is fixed on the oil tank wall (1) of the first transformer through a corrugated type molding insulating part (2) of the first transformer and is insulated from the oil tank wall of the first transformer; a high-voltage leading-out head (7) of the other transformer is fixed on the oil tank wall (9) of the other transformer through a corrugated type molding insulating piece (8) of the other transformer and is insulated with the oil tank wall of the other transformer; two transformer high voltage winding connect high-pressure leading-out head (3) of first transformer and high-pressure leading-out head (7) of another transformer respectively, adopt connecting cable (6) to carry out mechanical connection between high-pressure leading-out head (3) of first transformer and high-pressure leading-out head (7) of another transformer, copper pipe (4) can be dismantled in connecting cable (6) outer installation, can dismantle copper pipe (4) and set up outward and dismantle insulating layer (5).
2. The detachable high-voltage lead wire for connecting two transformers according to claim 1, wherein: the connecting cable (6) is divided into two sections, the first section is connected with a high-voltage leading-out head (3) of a first transformer, the other section is connected with a high-voltage leading-out head (7) of another transformer, and the two sections of connecting cables are connected together.
3. The detachable high-voltage lead wire for connecting two transformers according to claim 2, wherein: the detachable copper pipe (4) is divided into three sections, the first section is sleeved at a connection point between a high-voltage leading-out head (3) of a first transformer and a first section of connecting cable, the second section is sleeved at a re-connection point of the two sections of connecting cables, and the third section is sleeved at a connection point between the other section of connecting cable and a high-voltage leading-out head (7) of the other transformer.
4. A detachable high voltage lead for connecting two transformers according to claim 3, wherein: the detachable insulating layer (5) is divided into three sections, the first section covers the outer surface of a connecting point of a high-voltage leading-out head (3) of a first transformer and a detachable copper pipe connected with the first section, the third section covers the outer surface of a connecting point of a detachable copper pipe and a high-voltage leading-out head (7) of another transformer, and the second section covers the outer surface of a detachable copper pipe of the second section between the first section and the detachable insulating layer of the third section.
5. A detachable high-voltage connection method for connecting two transformers, using a high-voltage lead as defined in any one of claims 1 to 4, characterized by comprising the steps of:
the high-voltage windings of the two transformers with the same voltage grade are connected; the high-voltage winding of two transformers sets up the high-pressure lead-out head respectively, uses corrugated type shaping insulating part to be connected and insulating with the oil tank between high-pressure lead-out head and the oil tank wall, uses detachable cable junction between the high-pressure lead-out head of two transformers, and the copper pipe shielding can be dismantled in the cable external use, can dismantle the copper pipe surface and set up the insulating layer in order to guarantee insulating properties.
CN202010511323.2A 2020-06-08 2020-06-08 Detachable high-voltage lead for connecting two transformers and connecting method Pending CN111540573A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202010511323.2A CN111540573A (en) 2020-06-08 2020-06-08 Detachable high-voltage lead for connecting two transformers and connecting method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202010511323.2A CN111540573A (en) 2020-06-08 2020-06-08 Detachable high-voltage lead for connecting two transformers and connecting method

Publications (1)

Publication Number Publication Date
CN111540573A true CN111540573A (en) 2020-08-14

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Application Number Title Priority Date Filing Date
CN202010511323.2A Pending CN111540573A (en) 2020-06-08 2020-06-08 Detachable high-voltage lead for connecting two transformers and connecting method

Country Status (1)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113611500A (en) * 2021-07-23 2021-11-05 保定天威保变电气股份有限公司 High-voltage lead connecting device and method for double-body phase-shifting transformer

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113611500A (en) * 2021-07-23 2021-11-05 保定天威保变电气股份有限公司 High-voltage lead connecting device and method for double-body phase-shifting transformer
CN113611500B (en) * 2021-07-23 2022-09-23 保定天威保变电气股份有限公司 High-voltage lead connecting device and method for double-body phase-shifting transformer

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