CN114300218A - Large-air-gap ultralow-temperature power transformer structure - Google Patents
Large-air-gap ultralow-temperature power transformer structure Download PDFInfo
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- CN114300218A CN114300218A CN202111649931.0A CN202111649931A CN114300218A CN 114300218 A CN114300218 A CN 114300218A CN 202111649931 A CN202111649931 A CN 202111649931A CN 114300218 A CN114300218 A CN 114300218A
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Abstract
The invention discloses a large-air-gap ultralow-temperature power transformer structure, which comprises: the thermal insulation chamber shell is used for carrying out thermal insulation and magnetic conduction, and the thermal insulation chamber shell comprises: the heat insulation cavity comprises a heat insulation cavity shell body and a flange fastened at one end side of the heat insulation cavity shell body, wherein a first assembling cavity is arranged inside the heat insulation cavity shell; a transformer primary winding assembly disposed in the first assembly cavity; and the transformer secondary winding assembly is sleeved outside the heat insulation cavity shell body, wherein: the heat insulation cavity shell, the transformer primary winding assembly and the transformer secondary winding assembly are coaxially mounted, and the transformer primary winding assembly and the transformer secondary winding assembly conduct magnetism through an air gap. The large-air-gap ultralow-temperature power supply transformer structure can provide power for auxiliary equipment in a superconducting transmission line, so that higher electric energy transmission efficiency is obtained; the assembly is reasonable, and the cost is easy to control.
Description
Technical Field
The invention relates to the technical field of superconducting equipment, in particular to a large-air-gap ultralow-temperature power transformer structure.
Background
In the prior art, a superconductor is a conductor with zero resistance characteristic at a critical temperature, and can reduce resistance loss in electric energy transmission.
In an electric energy transmission system adopting a superconductor, heat loss is the main loss, the energy consumption of refrigeration equipment can be effectively reduced by reducing the heat loss, the efficiency level of a superconducting power transmission system is improved, equipment such as an electric control valve, an earthing switch and the like is required to be used in a superconducting power transmission line, the superconducting power transmission line is arranged in a low-temperature environment and needs external energy supply, and if an equipment electric connector is adopted, more heat leakage is caused, and the probability of liquid nitrogen leakage is higher.
Disclosure of Invention
The technical problem to be solved by the invention is to provide a large-air-gap ultralow-temperature power transformer structure which can provide power for auxiliary equipment in a superconducting power transmission line and obtain higher electric energy transmission efficiency; the assembly is reasonable, and the cost is easy to control.
In order to solve the above technical problems, the present invention provides a large-air-gap ultralow-temperature power transformer structure for transmitting energy by electromagnetic induction and supplying power to auxiliary equipment in a superconducting power transmission line, comprising: the thermal insulation chamber shell is used for carrying out thermal insulation and magnetic conduction, and the thermal insulation chamber shell comprises: the heat insulation cavity comprises a heat insulation cavity shell body and a flange fastened at one end side of the heat insulation cavity shell body, wherein a first assembling cavity is arranged inside the heat insulation cavity shell; a transformer primary winding assembly disposed in the first assembly cavity; and the transformer secondary winding assembly is sleeved outside the heat insulation cavity shell body, wherein: the heat insulation cavity shell, the transformer primary winding assembly and the transformer secondary winding assembly are coaxially mounted, and the transformer primary winding assembly and the transformer secondary winding assembly conduct magnetism through an air gap.
Wherein, adiabatic chamber shell body is sandwich structure, packs adiabatic pearlite in the first intermediate layer of adiabatic chamber shell body for carry out adiabatic magnetic conduction.
Wherein, the heat insulation cavity shell is made of non-magnetic stainless steel materials to avoid heating loss caused by eddy current.
Wherein, transformer secondary winding subassembly includes: an insulating sleeve and a transformer secondary winding, wherein: the insulating sleeve is of a sandwich structure, and the secondary winding of the transformer is arranged in the second sandwich of the insulating sleeve.
Wherein, the secondary winding of the transformer and the insulating sleeve are encapsulated and bonded by low-temperature glue.
The insulating sleeve is sleeved outside the cavity shell body, and the insulating sleeve and the cavity shell body are sealed and bonded by low-temperature glue for keeping insulation between the secondary winding of the transformer and the heat insulation cavity shell.
The secondary winding of the transformer is wound by a second-generation superconductive tape wrapped by polyimide in an insulating way.
Wherein, transformer primary winding subassembly includes: the transformer comprises a transformer primary winding and a primary insulating sleeve sleeved outside the transformer primary winding.
The primary winding of the transformer is wound by adopting a rectangular enameled copper wire, and the primary insulating sleeve is wound by adopting a polyimide film.
Wherein, the secondary winding assembly of the transformer is soaked in liquid nitrogen.
The large-air-gap ultralow-temperature power transformer structure has the following beneficial effects: big air gap ultra-low temperature power transformer structure includes: the power supply is used for transmitting energy through electromagnetic induction and providing power for auxiliary equipment in a superconducting transmission line, and comprises: the thermal insulation chamber shell is used for carrying out thermal insulation and magnetic conduction, and the thermal insulation chamber shell comprises: the heat insulation cavity comprises a heat insulation cavity shell body and a flange fastened at one end side of the heat insulation cavity shell body, wherein a first assembling cavity is arranged inside the heat insulation cavity shell; a transformer primary winding assembly disposed in the first assembly cavity; and the transformer secondary winding assembly is sleeved outside the heat insulation cavity shell body, wherein: the heat insulation cavity shell, the transformer primary winding assembly and the transformer secondary winding assembly are coaxially mounted, and the transformer primary winding assembly and the transformer secondary winding assembly conduct magnetism through an air gap, so that a power supply can be provided for auxiliary equipment in the superconducting power transmission line, and high electric energy transmission efficiency is obtained; the assembly is reasonable, and the cost is easy to control.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is an external structural schematic diagram of a large-air-gap ultralow-temperature power transformer structure according to an embodiment of the present invention.
Fig. 2 is a schematic diagram of a blasting structure of a large-air-gap ultralow-temperature power transformer structure according to an embodiment of the present invention.
Fig. 3 is a schematic diagram of the internal structure of the heat-insulating cavity housing of the large-air-gap ultralow-temperature power transformer structure according to the embodiment of the invention.
Fig. 4 is a schematic structural diagram of an insulating sleeve of a large-air-gap ultralow-temperature power transformer structure according to an embodiment of the present invention.
Fig. 5 is a schematic structural diagram of a secondary winding of a transformer of a large-air-gap ultralow-temperature power transformer structure according to an embodiment of the present invention.
Fig. 6 is a schematic structural diagram of a primary winding of a transformer of a large-air-gap ultralow-temperature power transformer structure according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Fig. 1-6 show a first embodiment of a large-air-gap ultra-low-temperature power transformer structure according to the present invention.
The big air gap ultra-low temperature power transformer structure in this embodiment for through electromagnetic induction transmission energy, provide the power for the auxiliary assembly among the superconducting transmission line, include: an insulating cavity housing 1 for conducting heat insulation and magnetic conduction, the insulating cavity housing 1 comprising: the heat insulation cavity shell comprises a heat insulation cavity shell body 11 and a flange 12 fastened at one end side of the heat insulation cavity shell body 11, wherein a first assembly cavity 13 is arranged inside a heat insulation cavity shell 1; a transformer primary winding assembly 2 mounted in the first mounting cavity 13; and a transformer secondary winding assembly 3 sleeved outside the heat insulation cavity shell body 11.
Wherein: the heat insulation cavity shell 1, the transformer primary winding assembly 2 and the transformer secondary winding assembly 3 are coaxially arranged, and the transformer primary winding assembly 2 and the transformer secondary winding assembly 3 conduct magnetism through an air gap.
In specific implementation, the heat insulation cavity shell 1 is made of 304 stainless steel and is a non-magnetic material, so that heating loss caused by eddy current can be avoided. The flange 12 is fastened to one end side of the heat insulating chamber shell body 11. In the embodiment, the flange structure is installed on a tank body of the superconducting transmission line, the diameter of the flange is 100mm, the flange structure comprises 6 installation holes, the hole diameter is 12mm, and the hole pitch is 80 mm.
Preferably, the heat insulation chamber shell 1 is made of a non-magnetic stainless steel material to avoid heat loss caused by eddy current, and the first assembly chamber 13 is arranged inside the heat insulation chamber shell 1. The heat insulation chamber shell body 11 is of a sandwich structure, and the first interlayer 111 of the heat insulation chamber shell body 11 is filled with heat insulation perlite for heat insulation and magnetic conduction.
The transformer primary winding assembly 2 is arranged in the first assembly cavity 13, the transformer primary winding 21 is wound by rectangular enameled copper wires, and in the embodiment, the transformer primary winding 21 has 20 turns, the rated voltage is 3V, the maximum current is 40A, the outer diameter of the coil is 33mm, and the inner diameter of the coil is 27 mm. The primary insulating sleeve 22 is made by winding a polyimide film.
In practice, the transformer primary winding assembly 2 comprises: a transformer primary winding 21 and a primary insulating sleeve 22 sleeved outside the transformer primary winding 21.
Further, the transformer secondary winding assembly 3 includes: an insulating sleeve 31 and a transformer secondary winding 32, wherein: the insulating sleeve 31 is of a sandwich structure and the transformer secondary winding 32 is arranged in the second sandwich 312 of the insulating sleeve.
In implementation, the insulating sleeve 31 is sleeved outside the cavity housing body 11, and the insulating sleeve 31 and the cavity housing body 11 are bonded by low-temperature glue in a potting manner to maintain insulation between the transformer secondary winding 32 and the heat-insulating cavity housing 1. The secondary winding 32 of the transformer is wound by a second-generation superconductive tape wrapped by polyimide in an insulating way. The coil has 40 turns in total, rated voltage of 6V, rated current of 20A, coil outer diameter of 58mm and coil inner diameter of 50 mm.
Preferably, the transformer secondary winding 32 and the insulating sleeve 31 are bonded by potting with low-temperature glue.
In the embodiment, when the large-air-gap ultralow-temperature power transformer structure is implemented, the heat insulation cavity shell 1, the transformer primary winding assembly 2 and the transformer secondary winding assembly 3 are coaxially installed. The primary winding 2 and the primary insulating sleeve of the transformer work at room temperature, the insulating sleeve and the secondary winding of the transformer work in liquid nitrogen at 77k, and the heat insulation cavity plays a role in heat insulation and magnetic conduction.
The transformer can drive the electromagnetic valve, the motor and the like through magnetic coupling between a primary winding and a secondary winding which are coaxially arranged, the working frequency is 400Hz, the primary rated voltage is 3V, and the secondary rated voltage is 6V. The transformer primary winding assembly 2 and the transformer secondary winding assembly 3 are magnetically conductive through an air gap. Because the design of no iron core is adopted between the primary and the secondary of the transformer, the magnetic conduction is realized through the air gap, and because the secondary of the transformer is made of superconducting materials, the absolute diamagnetism of the secondary of the transformer is utilized, and higher electric energy transmission efficiency can be obtained.
The large-air-gap ultralow-temperature power transformer structure has the following beneficial effects:
the first heat insulation cavity shell, the transformer primary winding assembly and the transformer secondary winding assembly are coaxially installed, and the transformer primary winding assembly and the transformer secondary winding assembly conduct magnetism through an air gap. Because the design of no iron core is adopted between the primary and the secondary of the transformer, the magnetic conduction is realized through the air gap, and because the secondary of the transformer is made of superconducting materials, the absolute diamagnetism of the secondary of the transformer is utilized, and higher electric energy transmission efficiency can be obtained.
Secondly, the assembly is reasonable, and the cost is easy to control.
Claims (10)
1. The utility model provides a big air gap ultra-low temperature power transformer structure for through electromagnetic induction transmission energy, provide the power for the auxiliary assembly among the superconducting transmission line, its characterized in that includes:
an insulating chamber housing for thermally and magnetically insulating, the insulating chamber housing comprising: the heat insulation cavity comprises a heat insulation cavity shell body and a flange fastened at one end side of the heat insulation cavity shell body, wherein a first assembling cavity is arranged inside the heat insulation cavity shell;
a transformer primary winding assembly mounted in the first mounting cavity; and
the transformer secondary winding assembly is sleeved outside the heat insulation cavity shell body, wherein: the heat insulation cavity shell, the transformer primary winding assembly and the transformer secondary winding assembly are coaxially mounted, and the transformer primary winding assembly and the transformer secondary winding assembly conduct magnetism through an air gap.
2. The large-gap ultralow-temperature power transformer structure as claimed in claim 1, wherein the heat-insulating cavity casing body is of a sandwich structure, and heat-insulating perlite is filled in the first sandwich layer of the heat-insulating cavity casing body for heat insulation and magnetic conduction.
3. The large-gap ultralow temperature power transformer structure of claim 1, wherein said thermal insulation chamber shell is made of a non-magnetic stainless steel material to avoid heat loss due to eddy currents.
4. The large-air-gap ultra-low-temperature power transformer structure of claim 1, wherein the transformer secondary winding assembly comprises: an insulating sleeve and a transformer secondary winding, wherein:
the insulating sleeve is of a sandwich structure, and the secondary winding of the transformer is arranged in a second sandwich layer of the insulating sleeve.
5. The large-gap ultralow temperature power transformer structure of claim 4, wherein said transformer secondary winding and said insulating sleeve are bonded by potting with low temperature glue.
6. The large-gap ultralow temperature power transformer structure as claimed in claim 5, wherein said insulating sleeve is sleeved outside said cavity housing, and said insulating sleeve and said cavity housing are bonded by potting with low temperature glue for maintaining insulation between the secondary winding of the transformer and the heat-insulating cavity housing.
7. The large-gap ultralow temperature power supply transformer structure of claim 4, wherein the secondary winding of the transformer is wound by using a second generation superconducting tape wrapped by polyimide insulation.
8. The large-air-gap ultra-low-temperature power transformer structure of claim 1, wherein the transformer primary winding assembly comprises: the transformer comprises a transformer primary winding and a primary insulating sleeve sleeved outside the transformer primary winding.
9. The large-gap ultralow temperature power supply transformer structure as claimed in claim 8, wherein the primary winding of the transformer is wound by rectangular enameled copper wires, and the primary insulating sleeve is wound by polyimide film.
10. The large-air-gap ultralow temperature power transformer structure of claim 1, wherein said transformer secondary winding assembly is immersed in liquid nitrogen.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111649931.0A CN114300218A (en) | 2021-12-30 | 2021-12-30 | Large-air-gap ultralow-temperature power transformer structure |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111649931.0A CN114300218A (en) | 2021-12-30 | 2021-12-30 | Large-air-gap ultralow-temperature power transformer structure |
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| CN114300218A true CN114300218A (en) | 2022-04-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202111649931.0A Pending CN114300218A (en) | 2021-12-30 | 2021-12-30 | Large-air-gap ultralow-temperature power transformer structure |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1203480A (en) * | 1998-06-26 | 1998-12-30 | 高步 | Superconducting electric energy output device |
| CN101663809A (en) * | 2007-03-27 | 2010-03-03 | 泽奈基电力公司 | Linear machine with primary part and sub section |
| CN205406253U (en) * | 2016-03-11 | 2016-07-27 | 中变集团上海变压器有限公司 | Loss prevention structure of superconducting transformer coil |
| CN107408441A (en) * | 2015-02-27 | 2017-11-28 | 西门子公司 | Electric wire coil apparatus for inductive resistance formula current limliting |
-
2021
- 2021-12-30 CN CN202111649931.0A patent/CN114300218A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1203480A (en) * | 1998-06-26 | 1998-12-30 | 高步 | Superconducting electric energy output device |
| CN101663809A (en) * | 2007-03-27 | 2010-03-03 | 泽奈基电力公司 | Linear machine with primary part and sub section |
| CN107408441A (en) * | 2015-02-27 | 2017-11-28 | 西门子公司 | Electric wire coil apparatus for inductive resistance formula current limliting |
| CN205406253U (en) * | 2016-03-11 | 2016-07-27 | 中变集团上海变压器有限公司 | Loss prevention structure of superconducting transformer coil |
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