CN209199711U - A kind of superconductive current limiter - Google Patents
A kind of superconductive current limiter Download PDFInfo
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- CN209199711U CN209199711U CN201821854951.5U CN201821854951U CN209199711U CN 209199711 U CN209199711 U CN 209199711U CN 201821854951 U CN201821854951 U CN 201821854951U CN 209199711 U CN209199711 U CN 209199711U
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- liquid nitrogen
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Abstract
The embodiment of the present application discloses a kind of superconductive current limiter, has liquid nitrogen storage tank body, is provided with superconducting coil in nitrogen storage tank body, superconducting coil is provided with electric current and connects lead；Liquid nitrogen storage tank body is connect with stream device is driven, and coil state monitoring device is additionally provided in nitrogen storage tank body, is driven stream device and is electrically connected with coil state monitoring device.Superconductive current limiter provided by the embodiments of the present application solves superconducting coil and produces a large amount of bubbles during quenching fever, leads to the technical problem that radiating rate is slow.
Description
Technical field
This application involves electrical equipment technical field more particularly to a kind of superconductive current limiters.
Background technique
Current limiter is power equipment common in electric system, and when power grid operates normally, current limiter can be in low resistance
State, current limiter at this time are equivalent to conducting wire, and when short circuit occurs, the resistance of current limiter can increase rapidly, thus to short
Road electric current is limited.
Superconductive current limiter is the current limiter using superconducting coil, and under normal circumstances, the resistance of superconducting coil is almost nil,
It but is more than its critical value, superconducting characteristic will lose and (quench), at this point, superconducting line after electric current increases to a certain extent
Circle shows high-ohmic, and generates huge heat, and heat is transmitted to superconducting coil surface, by the liquid nitrogen of outside by heat
It absorbs.
However, the thermal resistance of air film is bigger since adstante febre produces a large amount of bubble, hinder liquid nitrogen and superconducting coil it
Between heat exchange, cause internal heat transfer out come speed it is very slow, superconducting coil restore superconducting characteristic time it is long.
Utility model content
The embodiment of the present application provides a kind of superconductive current limiter, solves superconducting coil and produces during quenching fever
A large amount of bubbles lead to the technical problem that radiating rate is slow.
In view of this, there is liquid nitrogen storage tank body, the liquid nitrogen storage tank body this application provides a kind of superconductive current limiter
It is inside provided with superconducting coil, the superconducting coil is provided with electric current and connects lead；
The liquid nitrogen storage tank body is connect with stream device is driven, and coil state monitoring is additionally provided in the nitrogen storage tank body
Device, the drive stream device are electrically connected with the coil state monitoring device.
Preferably, the liquid nitrogen storage tank body is provided with liquid nitrogen import and liquid nitrogen exports, the liquid nitrogen import and the drive
The first end connection of device is flowed, the liquid nitrogen outlet is connect with the second end for driving stream device.
Preferably, the opposite side of the nitrogen storage tank is arranged in the liquid nitrogen import and liquid nitrogen outlet.
Preferably, flow-guiding channel, the superconducting coil setting are provided between the liquid nitrogen import and liquid nitrogen outlet
In the flow-guiding channel.
Preferably, the flow-guiding channel is provided with multiple deflector holes.
Preferably, the drive stream device is specially liquid nitrogen pump.
Preferably, have first to drive stream device and second and drive stream device, described first, which drives stream device, is arranged in the liquid nitrogen
The inner top of tank body is stored, described second drives the interior bottom that the liquid nitrogen storage tank body is arranged in stream device, and described first drives stream
Device is contrary with the second drive stream drive stream of device.
Preferably, the coil state monitoring device is specially current monitoring device, and the current monitoring device setting exists
The electric current connects on lead.
Preferably, the coil state monitoring device is specially pressure monitoring device.
As can be seen from the above technical solutions, the embodiment of the present application has the advantage that
In the embodiment of the present application, a kind of superconductive current limiter is provided, the liquid nitrogen storage tank body of the superconductive current limiter is connected to
Stream device is driven, and internal provided with coil state monitoring device；When coil state monitoring device detects that superconducting coil quenches
When, stream device starting is driven, the liquid nitrogen flow in liquid nitrogen fluid reservoir is driven, the liquid nitrogen of flowing can take away the production of superconducting coil adstante febre
The raw bubble for being attached to surface improves rate of heat dispation so that the heat of superconducting coil can pass out rapidly, therefore
It just can restore superconducting characteristic in short time after barrier excision.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the superconductive current limiter in one embodiment provided by the present application；
Fig. 2 is the structural schematic diagram of the superconductive current limiter in second embodiment provided by the present application；
Fig. 3 is the structural schematic diagram of the superconductive current limiter in third embodiment provided by the present application.
Specific embodiment
In order to make those skilled in the art more fully understand application scheme, below in conjunction in the embodiment of the present application
Attached drawing, the technical scheme in the embodiment of the application is clearly and completely described, it is clear that described embodiment is only this
Apply for a part of the embodiment, instead of all the embodiments.Based on the embodiment in the application, those of ordinary skill in the art exist
Every other embodiment obtained under the premise of creative work is not made, shall fall in the protection scope of this application.
Referring to FIG. 1, Fig. 1 is the structural schematic diagram of the superconductive current limiter in one embodiment provided by the present application.
The superconducting coil 12 of superconductive current limiter is usually to be immersed in liquid nitrogen, and the low temperature of liquid nitrogen maintains superconducting coil 12
Its superconducting characteristic, therefore, it is necessary to be equipped with liquid nitrogen storage tank body 11 to store liquid nitrogen, superconducting coil 12 may be dipped in liquid nitrogen storage
It deposits in tank body 11, superconducting coil 12 is also equipped with electric current and connects lead 13, for connecting with the external world.
In order to enable the liquid nitrogen in liquid nitrogen storage tank body 11 to flow, a drive stream device 14 can be set, store up liquid nitrogen
It deposits tank body 11 and is connect with stream device 14 is driven, also, drive stream device 14 and do not need longtime running, it is only necessary to be lost in superconducting coil 12
Overrun, therefore coil state monitoring device can be set, it detects for the state to superconducting coil 12, certainly, drives
Stream device 14 should be established with coil state monitoring device and is electrically connected, so that coil state monitoring device detects superconducting coil 12
It can star drive stream device 14 when quenching to work.
There are many set-up modes for driving stream device 14, can specifically be divided into outside drive stream device 14 and internal drive stream device
14.When being arranged in outside and driving stream device 14, liquid nitrogen storage tank body 11 should be provided with liquid nitrogen import 15 and liquid nitrogen outlet 16, liquid
Nitrogen inlet 15 can be connect with the first end for driving stream device 14, and liquid nitrogen outlet 16 can be connect with the second end for driving stream device 14.
Liquid nitrogen import 15 and liquid nitrogen outlet 16 can be set liquid nitrogen storage tank body 11 anywhere, as long as being provided separately
, but in order to keep the driving for driving stream device 14 stronger, the flow effect of liquid nitrogen is more preferable, liquid nitrogen import 15 and liquid nitrogen outlet 16
It is preferably disposed on the opposite side of liquid nitrogen storage tank body 11, specifically, can be set in the two sides of 11 length direction of liquid nitrogen storage tank body,
So as to make the liquid nitrogen flow of each region in liquid nitrogen storage tank body 11, the bubble on 12 surface of superconducting coil is driven away more complete
Face.
In the application one embodiment, liquid nitrogen storage tank body 11 is provided with liquid nitrogen import 15 and liquid in the longitudinal direction
Nitrogen outlet 16, two mouths can connect with stream device 14 is driven, monitor in the inside of liquid nitrogen storage tank body 11 provided with coil state
Device；When coil state monitoring device detects that superconducting coil 12 quenches, drives stream device 14 and start, drive in liquid nitrogen fluid reservoir
Liquid nitrogen can flow in the longitudinal direction, the liquid nitrogen of flowing can take away 12 adstante febre of superconducting coil generation be attached to surface
Bubble improve rate of heat dispation so that the heat of superconducting coil 12 can pass out rapidly, it is short after failure removal
Just it can restore superconducting characteristic in time.
The above are in one embodiment provided by the present application superconductive current limiter carry out detailed description, under request in person ginseng
See that Fig. 2, Fig. 2 are the structural schematic diagram of the superconductive current limiter in second embodiment provided by the present application.
On the basis of above-mentioned one embodiment, setting water conservancy diversion it can lead between liquid nitrogen import 15 and liquid nitrogen outlet 16
Road 21, flow-guiding channel 21 should have enough spaces to accommodate superconducting coil 12, and superconducting coil 12 is arranged in flow-guiding channel 21
It is interior, in this way, flow-guiding channel 21 limits the space of liquid nitrogen flow, under same drive stream device 14, drive the effect of stream
More preferably, the speed of liquid nitrogen flow gets a promotion, more preferable to the expeling effect of bubble.
Further, multiple deflector holes 22 can be set on the side wall of flow-guiding channel 21, make the liquid outside flow-guiding channel 21
Nitrogen can be supplemented in flow-guiding channel 21, make the heat loss of superconducting coil 12 faster.
Specifically, driving stream device 14 can be liquid nitrogen pump, also liquid nitrogen is driven using the mode of high pressure gas certainly,
Details are not described herein.
In second embodiment of the application, flow-guiding channel 21 is provided in liquid nitrogen storage tank body 11, and water conservancy diversion is logical
Road 21 offers multiple deflector holes 22 so that drive stream device driving effect it is more preferable, the flowing velocity of liquid nitrogen faster, in superconducting line
When 12 fever of circle generates a large amount of bubbles, bubble can be taken away faster, thus make the heat dissipation of superconducting coil 12 more efficiently, energy
It is enough to restore superconducting characteristic faster.
The above are in one embodiment provided by the present application superconductive current limiter carry out detailed description, under request in person ginseng
See that Fig. 3, Fig. 3 are the structural schematic diagram of the superconductive current limiter in third embodiment provided by the present application.
It drives stream device and can be and outside is set, certainly, setting can also make liquid nitrogen form flowing in inside, in order to
Enough making liquid nitrogen in inside, formation circulates, and two drive stream devices can be set, first, which drives stream device 31, can be set in liquid nitrogen
The inner top of tank body 11 is stored, second, which drives stream device 32, can be set in the interior bottom of liquid nitrogen storage tank body 11, and make the first drive
It is contrary with the second drive stream drive stream of device 32 to flow device 31.
It should be noted that above-mentioned inner top and interior bottom should be understood as an area in liquid nitrogen storage tank body 11
Domain, inner top should be understood as the upper area of superconducting coil 12, and interior bottom should be understood as the lower area of superconducting coil 12,
Two drive streams for driving stream device are contrary, so as to form an interior circulation clockwise or counter-clockwise, make liquid nitrogen
Flowing is more smooth, is easy to take away more bubbles.
First drive stream device 31 and the second drive stream device 32 are also possible to liquid nitrogen pump, further, it is also possible to be the knot such as propeller
The device of structure.
In the application third embodiment, in liquid nitrogen storage tank body 11 be provided with upper and lower two drive stream device, two
When driving stream device co-operation, liquid nitrogen can be made to form internal circulation flow, when superconducting coil 12 generates heat and generates a large amount of bubbles,
Also the bubble on 12 surface of superconducting coil can be taken away, thus make the heat dissipation of superconducting coil 12 more efficiently, it can be extensive faster
Multiple superconducting characteristic.
In three above embodiment provided by the present application, coil state monitoring device can be current monitoring device, electric current
Monitoring device can be set the electric current in superconducting coil 12 and connect on lead 13, it is of course also possible to be arranged in other be able to detect it is super
The place of 12 electric current of loop, when detecting that electric current is greater than the threshold value of 12 superconducting characteristic of superconducting coil, current monitoring device is then
It may determine that superconducting coil 12 is in the state that quenches, stream device is driven in starting.
Coil state monitoring device is also possible to pressure monitoring device, and superconducting coil 12 can generate a large amount of bubbles in fever
When, a large amount of bubble can make the pressure increase inside liquid nitrogen storage tank body 11, and the pressure inside liquid nitrogen storage tank body 11 is arranged in
Monitoring device can be in the state that quenches after detecting pressure increase with superconducting coil 12, and stream device is driven in starting.
The description of the present application and term " first " in above-mentioned attached drawing, " second ", " third ", " the 4th " etc. are (if deposited
) it is to be used to distinguish similar objects, without being used to describe a particular order or precedence order.It should be understood that use in this way
Data are interchangeable under appropriate circumstances, so that embodiments herein described herein for example can be in addition to illustrating herein
Or the sequence other than those of description is implemented.In addition, term " includes " and " having " and their any deformation, it is intended that
Cover it is non-exclusive include, for example, containing the process, method, system, product or equipment of a series of steps or units need not limit
In step or unit those of is clearly listed, but may include be not clearly listed or for these process, methods, produce
The other step or units of product or equipment inherently.
It should be appreciated that in this application, " at least one (item) " refers to one or more, and " multiple " refer to two or two
More than a."and/or" indicates may exist three kinds of relationships, for example, " A and/or B " for describing the incidence relation of affiliated partner
It can indicate: only exist A, only exist B and exist simultaneously tri- kinds of situations of A and B, wherein A, B can be odd number or plural number.Word
Symbol "/" typicallys represent the relationship that forward-backward correlation object is a kind of "or"." at least one of following (a) " or its similar expression, refers to
Any combination in these, any combination including individual event (a) or complex item (a).For example, at least one in a, b or c
Item (a), can indicate: a, b, c, " a and b ", " a and c ", " b and c ", or " a and b and c ", and wherein a, b, c can be individually,
It can be multiple.
The above, above embodiments are only to illustrate the technical solution of the application, rather than its limitations；Although referring to before
Embodiment is stated the application is described in detail, those skilled in the art should understand that: it still can be to preceding
Technical solution documented by each embodiment is stated to modify or equivalent replacement of some of the technical features；And these
It modifies or replaces, the spirit and scope of each embodiment technical solution of the application that it does not separate the essence of the corresponding technical solution.
Claims (9)
1. a kind of superconductive current limiter, which is characterized in that there is liquid nitrogen storage tank body, be provided with superconduction in the nitrogen storage tank body
Coil, the superconducting coil are provided with electric current and connect lead；
The liquid nitrogen storage tank body is connect with stream device is driven, and coil state monitoring dress is additionally provided in the nitrogen storage tank body
It sets, the drive stream device is electrically connected with the coil state monitoring device.
2. superconductive current limiter according to claim 1, which is characterized in that the liquid nitrogen storage tank body is provided with liquid nitrogen import
It is exported with liquid nitrogen, the liquid nitrogen import is connect with the first end for driving stream device, and device is flowed with the drive in the liquid nitrogen outlet
Second end connection.
3. superconductive current limiter according to claim 2, which is characterized in that the liquid nitrogen import and liquid nitrogen outlet are arranged
In the opposite side of the nitrogen storage tank.
4. superconductive current limiter according to claim 3, which is characterized in that between the liquid nitrogen import and liquid nitrogen outlet
It is provided with flow-guiding channel, the superconducting coil is arranged in the flow-guiding channel.
5. superconductive current limiter according to claim 4, which is characterized in that the flow-guiding channel is provided with multiple deflector holes.
6. superconductive current limiter according to claim 5, which is characterized in that the drive stream device is specially liquid nitrogen pump.
7. superconductive current limiter according to claim 1, which is characterized in that have first to drive stream device and second and drive stream dress
It sets, described first drives the inner top that the liquid nitrogen storage tank body is arranged in stream device, and described second, which drives stream device, is arranged described
The interior bottom of liquid nitrogen storage tank body, the first drive stream device are contrary with the second drive stream drive stream of device.
8. superconductive current limiter according to claim 1, which is characterized in that the coil state monitoring device is specially electric current
Monitoring device, the current monitoring device setting connect on lead in the electric current.
9. superconductive current limiter according to claim 1, which is characterized in that the coil state monitoring device is specially pressure
Monitoring device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821854951.5U CN209199711U (en) | 2018-11-12 | 2018-11-12 | A kind of superconductive current limiter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821854951.5U CN209199711U (en) | 2018-11-12 | 2018-11-12 | A kind of superconductive current limiter |
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| Publication Number | Publication Date |
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| CN209199711U true CN209199711U (en) | 2019-08-02 |
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| CN201821854951.5U Active CN209199711U (en) | 2018-11-12 | 2018-11-12 | A kind of superconductive current limiter |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110534322A (en) * | 2019-10-14 | 2019-12-03 | 浙江宝威电气有限公司 | A kind of superconducting current-limiting transformer |
| CN112018897A (en) * | 2020-09-10 | 2020-12-01 | 广东电网有限责任公司电力科学研究院 | Method and device for monitoring state of superconducting alternating current limiter based on reclosing |
-
2018
- 2018-11-12 CN CN201821854951.5U patent/CN209199711U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110534322A (en) * | 2019-10-14 | 2019-12-03 | 浙江宝威电气有限公司 | A kind of superconducting current-limiting transformer |
| CN112018897A (en) * | 2020-09-10 | 2020-12-01 | 广东电网有限责任公司电力科学研究院 | Method and device for monitoring state of superconducting alternating current limiter based on reclosing |
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