CN2760728Y - Superconductive transformer - Google Patents

Superconductive transformer Download PDF

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Publication number
CN2760728Y
CN2760728Y CN 200420069373 CN200420069373U CN2760728Y CN 2760728 Y CN2760728 Y CN 2760728Y CN 200420069373 CN200420069373 CN 200420069373 CN 200420069373 U CN200420069373 U CN 200420069373U CN 2760728 Y CN2760728 Y CN 2760728Y
Authority
CN
China
Prior art keywords
low
temperature
superconducting
vessel
iron core
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.)
Expired - Fee Related
Application number
CN 200420069373
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Chinese (zh)
Inventor
王银顺
赵祥
韩军杰
鲁光辉
李会东
关颖
鲍庆
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.)
Tebian Electric Apparatus Stock Co Ltd
Institute of Electrical Engineering of CAS
Original Assignee
Tebian Electric Apparatus Stock Co Ltd
Institute of Electrical Engineering of CAS
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 Tebian Electric Apparatus Stock Co Ltd, Institute of Electrical Engineering of CAS filed Critical Tebian Electric Apparatus Stock Co Ltd
Priority to CN 200420069373 priority Critical patent/CN2760728Y/en
Application granted granted Critical
Publication of CN2760728Y publication Critical patent/CN2760728Y/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Abstract

The utility model relates to a superconductive transformer, which comprises an iron core, a superconductive coil and a low-temperature vessel, wherein the superconductive coil is arranged in the low-temperature vessel which is sheathed on an iron core post together with the superconductive coil in the low-temperature vessel; the iron core is arranged outside the low-temperature vessel and is separated from the superconductive coil of which the lead wire is led out from the low-temperature vessel, wherein the low-temperature vessel is formed by that a casing and a cover plate are connected, wherein the casing has multiple layers, and each layer keeps vacuum, and insulative materials keeping vacuum and preventing heat radiation are filled between each layer. The insulative material does not contain any conductor material and semiconductor material capable of forming a closed ring by surrounding the iron core. The utility model can not increase the no-load loss, can effectively reduce the volume of the low-temperature vessel and can reduce the heat loss of the low-temperature medium.

Description

Superconducting transformer
Technical field
The utility model belongs to the transformer technology field, is specifically related to a kind of superconducting transformer.
Background technology
The operating efficiency of conventional transformer self is very high, but because of its quantity is many, total losses are still very big.National annual energy output was about 19,000 hundred million kilowatt hours in 2003, and the total losses of transformer (load loss and no-load loss sum, load loss is a copper loss, no-load loss is iron loss) just account for about 10% of energy output, wherein the load loss proportion is very big in the total losses of transformer, and the no-load loss proportion is little; So reducing transformer load loss is significant for the total losses that reduce transformer.And superconducting transformer is to utilize the superconducting wire coiling to form, and when superconducting transformer moved, the resistance of superconducting line (R) was zero, have only owing to the magnetic hysteresis loss that is directly proportional with frequency that magnetic flux retrains and motion is given birth to, so loss was extremely low, and power savings is fairly obvious.And because superconductor current density height (higher two more than the magnitude than copper at 77K), so superconducting transformer has simultaneously that volume is little, non-environmental-pollution and do not have advantage such as disaster hidden-trouble, is acknowledged as the new and high technology of most possible replacement conventional transformer.
In the existing superconducting transformer, often the iron core with transformer places low temperature environment.The no-load loss of superconducting transformer that adopts this kind structure is than higher.No-load loss mainly refers to magnetic hysteresis loss and eddy current loss unshakable in one's determination, the general soft magnetic material that adopts unshakable in one's determination, according to experimental study: on the one hand, soft magnetic material at low temperatures saturation induction density and coercive force than all increasing to some extent under the normal temperature, this magnetic hysteresis loss that just means iron core low temperature under will be than higher under the normal temperature; On the other hand, soft magnetic material resistance at low temperatures descends to some extent, and this just means that eddy current loss increases to some extent.Therefore not only increased the no-load loss of superconducting transformer, the thermal losses that has also increased cryogenic media, thus also just reduced the efficient of superconducting transformer.
The utility model content
Technical problem to be solved in the utility model is the above-mentioned defective that exists at prior art, a kind of superconducting transformer is provided, the superconducting transformer of this structure does not increase no-load loss, can effectively reduce the volume of low-temperature (low temperature) vessel, and reduces the thermal losses of cryogenic media.
The technical scheme that solution the utility model technical problem is adopted is that this superconducting transformer includes iron core, superconducting coil, low-temperature (low temperature) vessel, superconducting coil places in the low-temperature (low temperature) vessel, low-temperature (low temperature) vessel and the superconducting coil in it are set on the core limb jointly, iron core places outside the low-temperature (low temperature) vessel and superconducting coil separates, the lead-in wire of superconducting coil is drawn from low-temperature (low temperature) vessel, described low-temperature (low temperature) vessel is an annular, and the centre has the room temperature hole that core limb is passed through.
Low-temperature (low temperature) vessel can be formed by connecting by housing and cover plate, housing adopts multilayer, keep vacuum between each layer, and be filled with the insulating material that keeps vacuum degree and thermal radiation resistant, do not contain any conductor and semi-conducting material that can form closed loop in this insulating material around iron core, in the time of so just can avoiding the superconducting transformer operation, because of low-temperature (low temperature) vessel forms short-circuited conducting sleeve, and the generation that causes the accident.
In the utility model, the superconducting coil lead-in wire is welded together to form inner lead with conventional wires, and inner lead is drawn from low-temperature (low temperature) vessel by the lead channels on the low-temperature (low temperature) vessel.This welding easily, has reliably been avoided the difficulty of superconducting line welding in the past effectively.
Description of drawings
Below in conjunction with the embodiment accompanying drawing the utility model is described in further detail
Fig. 1 is the structural representation of the utility model embodiment 1
Fig. 2 is the structural representation of the utility model embodiment 2
Among the figure: 1-lead channels 2-cover plate 3-housing 4-draws screw rod 5-6-winding lower cover 7-(insulated coil) exterior loop 8-(insulated coil) interior loop 9-unshakable in one's determination winding upper cover plate 10-fastening bolt 11-inner lead 12-superconduction coil assembly
Embodiment
The utility model mainly is made of iron core 5, superconducting coil, low-temperature (low temperature) vessel, superconducting coil places in the low-temperature (low temperature) vessel, low-temperature (low temperature) vessel and the superconducting coil in it are set on the core limb jointly, iron core 5 places outside the low-temperature (low temperature) vessel and superconducting coil separates, and unshakable in one's determination 5 are operated in (iron core is not dipped in the cold-producing medium) under the room temperature state.Unshakable in one's determination 5 are made by permeability magnetic material, can adopt single-phase iron core or heterogeneous iron core according to actual needs; Superconducting coil can adopt low temperature superconducting material or high temperature superconducting materia to make, and can adopt concentric two coil configuration or multi-thread coil structures according to actual needs, and superconducting coil is on insulation framework; Low-temperature (low temperature) vessel is an annular, has the room temperature hole that core limb is passed through in the middle of it, and low-temperature (low temperature) vessel generally is to adopt the thermal insulation insulation Dewar that is made of the multilayer insulation composite material.Be to adopt the single-phase superconducting transformer that single-phase iron core and three-phase iron core form thus and the production process of three-phase superconducting transformer respectively below.
Embodiment 1: as shown in Figure 1, the superconducting coil concentric locking collar that coiling is good forms exterior loop 7 and interior loop 8 together, places winding upper cover plate 9 in the upper end of exterior loop 7 and interior loop 8 then; Winding lower cover 6 is placed in bottom in exterior loop 7 and interior loop 8; Again with some be uniformly distributed along the circumference draw screw rod 4 fastening winding upper cover plate 9 and winding lower covers 6, thereby compress superconducting coil, limit it in axial and radial displacement; Coil lead and conventional conductor are welded together to form inner lead 11, then inner lead 11 are drawn winding upper cover plate 9.Inner lead is drawn from low-temperature (low temperature) vessel by the lead channels on the low-temperature (low temperature) vessel 1.To be inserted in the housing 3 of annular low-temperature (low temperature) vessel with top integral body, on the faying face of housing 3 and cover plate 2, apply low temperature resistant insulating material, cover cover plate 2 again; Use fastening bolt 10 rugged housings 3 and cover plate 2 then, just form the superconduction coil assembly.The superconduction coil assembly is sleeved on single-phase unshakable in one's determination 5 the core limb, and closed core 5 then; The inner lead 11 that to draw low-temperature (low temperature) vessel again is connected with outside lead, promptly is assembled into a single-phase superconducting transformer.
Embodiment 2: it is identical with embodiment 1 that the front forms superconduction coil assembly 12 steps, and unshakable in one's determination 5 adopt the three-phase iron core in the present embodiment, as shown in Figure 2, three superconduction coil assemblies 12 is enclosed within respectively on three core limbs of iron core 5; The inner lead 11 that to draw low-temperature (low temperature) vessel again promptly forms the three-phase superconducting transformer after connecting by the connection group of transformer.

Claims (9)

1, a kind of superconducting transformer, include iron core, superconducting coil, low-temperature (low temperature) vessel, it is characterized in that superconducting coil places in the low-temperature (low temperature) vessel, low-temperature (low temperature) vessel and the superconducting coil in it are set on the core limb jointly, iron core places outside the low-temperature (low temperature) vessel and superconducting coil separates, and the lead-in wire of superconducting coil is drawn from low-temperature (low temperature) vessel.
2, superconducting transformer according to claim 1 is characterized in that described low-temperature (low temperature) vessel is annular, and the centre has the room temperature hole that core limb is passed through.
3, superconducting transformer according to claim 2, it is characterized in that low-temperature (low temperature) vessel is formed by connecting by housing and cover plate, housing has multilayer, keep vacuum between each layer, and be filled with the insulating material that keeps vacuum degree and thermal radiation resistant, do not contain any conductor and semi-conducting material that can form closed loop in this insulating material around iron core.
4, superconducting transformer according to claim 3 is characterized in that housing is connected by bolt with cover plate, is covered with low temperature resistant insulating material on the faying face of housing and cover plate.
5, according to claim 1 or 2 or 3 described superconducting transformers, it is characterized in that coil lead and conventional wires are welded together to form inner lead, inner lead is drawn from low-temperature (low temperature) vessel by the lead channels on the low-temperature (low temperature) vessel.
6, according to claim 1 or 2 or 3 described superconducting transformers, it is characterized in that superconducting coil can adopt low temperature superconducting material or high temperature superconducting materia to make, its surface is surrounded by or scribbles the single or multiple lift insulating material.
7, superconducting transformer according to claim 6 is characterized in that superconducting coil adopts concentric two coil configuration or multi-thread coil structures.
8,, it is characterized in that unshakable in one's determination making by permeability magnetic material according to claim 1 or 2 or 3 described superconducting transformers.
9, superconducting transformer according to claim 8 is characterized in that iron core can adopt single-phase iron core or heterogeneous iron core.
CN 200420069373 2004-12-06 2004-12-06 Superconductive transformer Expired - Fee Related CN2760728Y (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 200420069373 CN2760728Y (en) 2004-12-06 2004-12-06 Superconductive transformer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 200420069373 CN2760728Y (en) 2004-12-06 2004-12-06 Superconductive transformer

Publications (1)

Publication Number Publication Date
CN2760728Y true CN2760728Y (en) 2006-02-22

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN 200420069373 Expired - Fee Related CN2760728Y (en) 2004-12-06 2004-12-06 Superconductive transformer

Country Status (1)

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CN (1) CN2760728Y (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106409487A (en) * 2016-11-03 2017-02-15 上海和鸣超导变压器有限公司 Marine superconducting transformer
CN110211765A (en) * 2019-06-12 2019-09-06 华北电力大学 A kind of superconducting current-limiting transformer
WO2023182963A1 (en) * 2022-03-22 2023-09-28 T.C. Ankara Universitesi Rektorlugu A superconductor protection unit

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106409487A (en) * 2016-11-03 2017-02-15 上海和鸣超导变压器有限公司 Marine superconducting transformer
CN106409487B (en) * 2016-11-03 2017-12-19 中变集团上海变压器有限公司 A kind of superconducting transformer peculiar to vessel
CN110211765A (en) * 2019-06-12 2019-09-06 华北电力大学 A kind of superconducting current-limiting transformer
WO2023182963A1 (en) * 2022-03-22 2023-09-28 T.C. Ankara Universitesi Rektorlugu A superconductor protection unit

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GR01 Patent grant
C19 Lapse of patent right due to non-payment of the annual fee
CF01 Termination of patent right due to non-payment of annual fee