CN106356237B - A kind of liquid metal breaker - Google Patents
A kind of liquid metal breaker Download PDFInfo
- Publication number
- CN106356237B CN106356237B CN201610837417.2A CN201610837417A CN106356237B CN 106356237 B CN106356237 B CN 106356237B CN 201610837417 A CN201610837417 A CN 201610837417A CN 106356237 B CN106356237 B CN 106356237B
- Authority
- CN
- China
- Prior art keywords
- liquid metal
- flow hole
- insulating barrier
- closed cavity
- cutting plate
- 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.)
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Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H29/00—Switches having at least one liquid contact
- H01H29/02—Details
- H01H29/04—Contacts; Containers for liquid contacts
- H01H29/06—Liquid contacts characterised by the material thereof
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H29/00—Switches having at least one liquid contact
- H01H29/004—Operated by deformation of container
Abstract
The invention discloses a kind of liquid metal breakers, including the first busbar, the closed cavity and be filled in the intracorporal liquid metal of closing chamber that second busbar and insulation exterior panel are constituted, it further include the operating mechanism being arranged in outside closed cavity, insulating barrier is equipped in the closed cavity, closed cavity is divided into two separate chambers by the insulating barrier, the insulating barrier is equipped with the through flow hole of connection two chambers, the Free Surface of the liquid metal is more than the outer rim of through flow hole, the insulation cutting plate being adapted to through flow hole is equipped in the chamber, the insulation cutting plate is connect by pull rod with operating mechanism；When detecting short trouble, operating mechanism quick acting, insulation cutting plate is pulled to be bonded with through flow hole by pull rod, squeeze the liquid metal in through flow hole, through-flow resistance increases rapidly, and the liquid metal in last through flow hole is completely exhausted out, and completes electric current disjunction, compared with self-constriction type liquid metal current limiter, specified through-current capability of the invention is stronger.
Description
Technical field
The invention belongs to power switch technical fields, and in particular to one kind is installed in electric system, is connected as system
With the liquid metal breaker of the control and protection device of disjunction.
Background technique
With the research and extension of direct current transmission and distribution, the demand of mesohigh dc circuit breaker is growing day by day.Currently, research compared with
More mesohigh dc circuit breakers mainly have hybrid dc circuit breaker, solid circuit breaker etc..
Hybrid dc circuit breaker combines the advantages of mechanical switch and semiconductor switch, the strong, disjunction with through-current capability
Process is without arc or the advantages of few arc, but its breaking course is more complex, reduces global reliability.Solid circuit breaker has disjunction fast
The advantages of fast, without arc, but single branch semiconductor devices voltage rating, electric current are relatively low, are used for middle-and-high voltage system, need a large amount of
In series and parallel, there is technical issues that series average-voltage, in addition, its economic cost is higher.
Liquid metal breaker is using environment friendly liquid metal as flow path, under electric system normal condition,
Circulate rated current, and when short trouble occurs for system, flow path is cut off by discharge liquid metal, completes disjunction.
Liquid metal breaker is as a kind of novel breaker, by crushing failure at high speed liquid metal flow path until dividing
Deenergizing has small on state resistance, quick action, divide-shut brake without spring, advantages of environment protection, in addition, with conventional machine
Electric-type breaker is compared, and liquid metal breaker effectively increases average time between failures (MTBF).
Liquid metal breaker structure is simple, high reliablity, economic cost are lower, therefore, in mesohigh direct current power system
It is promoted and applied in system, economic cost can be greatly reduced on the basis of ensuring reliable breaking, self-constriction type liquid common at present
State metal restrictor, its specified through-current capability still is apparent not enough when for occasions such as AC electric power systems, is not able to satisfy actual needs.
Summary of the invention
It is an object of the invention to deficiencies according to prior art, design a kind of stronger liquid metal of specified through-current capability
Breaker.
The technical solution adopted by the present invention to solve the technical problems is: a kind of liquid metal breaker, including first leads
The closed cavity and be filled in the intracorporal liquid metal of closing chamber that electricity row, the second busbar and insulation exterior panel are constituted, are also wrapped
The operating mechanism being arranged in outside closed cavity is included, insulating barrier is equipped in the closed cavity, the insulating barrier will seal
Closed chamber body is divided into two separate chambers, and the insulating barrier is equipped with the through flow hole of connection two chambers, the liquid gold
The Free Surface of category is more than the outer rim of through flow hole, is equipped with the insulation cutting plate being adapted to through flow hole in the chamber, described is exhausted
Edge cutting plate is connect by pull rod with operating mechanism.
A kind of liquid metal breaker, closed cavity have multiple, described insulation cutting plates to connect by pull rod
Operating mechanism is connected later.
A kind of liquid metal breaker, insulating barrier and insulation cutting plate have multiple groups, and the muti-piece insulation is cut
Plate connects operating mechanism by pull rod.
A kind of liquid metal breaker, operating mechanism are repulsion dish and the electromagnetic repulsion force machine that magnet exciting coil forms
Structure, the pull rod are connect with repulsion dish.
A kind of liquid metal breaker, through flow hole are the counter sink that surface is equipped with conical socket, and described is exhausted
Edge cutting plate end is equipped with the inclined-plane being adapted to conical socket.
A kind of liquid metal breaker, the first busbar and the second busbar are all made of T2Y red copper.
A kind of liquid metal breaker, insulating barrier and movable insulation cutting plate are all made of aluminium oxide ceramics.
A kind of liquid metal breaker, liquid metal use GaInSn alloy.
The beneficial effects of the present invention are: two separate chambers at through flow hole connection insulating barrier both ends are indoor when original state
Liquid metal, so that the first busbar and the conducting of two busbars, when detecting short trouble, the fast quick-action of operating mechanism
Make, pulls insulation cutting plate to be bonded with through flow hole by pull rod, the liquid metal in through flow hole is squeezed out and separated through flow hole, makes two
A chamber is isolated, and completes electric current disjunction, compared with self-constriction type liquid metal current limiter, specified through-current capability of the invention is more
By force.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of first embodiment of the invention；
Fig. 2 is the structural schematic diagram of second embodiment of the invention；
Fig. 3 is the structural schematic diagram of third embodiment of the invention；
Fig. 4 is the structural schematic diagram of fourth embodiment of the invention.
Each appended drawing reference are as follows: the 1.1-the first busbar, the 1.2-the second busbar, 2.1-insulation exterior panels, 2.2-absolutely
Edge partition, 3-insulation cutting plates, 4-liquid metals, 5-operating mechanisms, 5.1-magnet exciting coils, 5.2-repulsion dish.
Specific embodiment
The present invention is described in further detail below in conjunction with the accompanying drawings.
The invention discloses a kind of liquid metal breakers, including by the first busbar 1.1, the second busbar 1.2 and four
The closed cavity and be filled in the intracorporal liquid metal 4 of closing chamber that block insulation exterior panel 2.1 is constituted, further include that setting exists
Operating mechanism 5 outside closed cavity, the closed cavity is interior to be equipped with insulating barrier 2.2, and the insulating barrier 2.2 will be closed
Cavity is divided into two separate chambers, and 2.2 middle position of insulating barrier is equipped with the through flow hole of connection two chambers, described
The Free Surface of liquid metal 4 is more than the outer rim of through flow hole, that is, covers through flow hole, is equipped in the chamber suitable with through flow hole
The movable insulation cutting plate 3 matched, wherein through flow hole is the counter sink that surface is equipped with conical socket, and 3 end of insulation cutting plate is set
There is the inclined-plane being adapted to conical socket, the insulation cutting plate 3 is connect by pull rod with operating mechanism 5, and wherein operating mechanism 5 is answered
Meet requirement of the liquid metal breaker to movement rapidity, low dispersibility, through flow hole connection insulating barrier 2.2 when original state
The indoor liquid metal 4 of two separate chambers at both ends is so that the first busbar 1.1 and the conducting of two busbars 1.2, work as detection
When to short trouble, 5 quick acting of operating mechanism pulls insulation cutting plate 3 to be bonded with through flow hole by pull rod, will be in through flow hole
Liquid metal 4 squeezes out and separates through flow hole, is isolated two chambers, completes electric current disjunction, limits with self-constriction type liquid metal
Stream device is compared, and specified through-current capability of the invention is stronger.
Embodiment 1
As shown in Figure 1, operating mechanism 5 is located on the right side of closed cavity, the movement of operating mechanism 5 pulls insulation cutting plate 3 to transport to the right
It is dynamic, it contacts it with insulating barrier 2.2 and keeps pressure.
Embodiment 2
As shown in Fig. 2, operating mechanism 5 is located on the left of closed cavity, the movement of operating mechanism 5 pulls insulation cutting plate 3 to transport to the left
It is dynamic, it contacts it with insulating barrier 2.2 and keeps pressure.
Embodiment 3
As shown in figure 3, a kind of cascade of liquid metal breaker module, the closed cavity have multiple and mutual
Independent, each intracorporal insulation cutting plate 3 of closing chamber connects operating mechanism 5 by same root pull rod, thus by multiple closing chambers
Body is together in series.
In fact, carrying out parallel connection using liquid metal breaker module also belongs to the scope that the invention patent covers.
Embodiment 4
As shown in figure 4, a kind of porous cascade of liquid metal breaker module, the closed cavity only have one
A, insulating barrier 2.2 and insulation cutting plate 3 have multiple groups, and one piece of insulating barrier 2.2 and one piece of corresponding insulation cutting plate 3 form one group,
The muti-piece insulation cutting plate 3 connects operating mechanism 5 by same root pull rod.
In fact, carrying out the scope in parallel for also belonging to the invention patent and covering using liquid metal breaker is porous.
Embodiment 5
The operating mechanism 5 is repulsion dish 5.2 and the electromagnetism that the magnet exciting coil 5.1 positioned at 5.2 front of repulsion dish forms
Repulsive force mechanism, the pull rod are connect with repulsion dish 5.2, and the changing magnetic field that electric current generates in magnet exciting coil 5.1 makes repulsion dish
Vortex is induced in 5.2, the electric current in magnet exciting coil 5.1 and the inductive loop in repulsion dish 5.2 act on, electromagnetic repulsion force is generated,
It pushes repulsion dish 5. axially movable, insulation cutting plate 3 insertion through flow hole is then driven by pull rod and by the liquid metal in hole
It squeezes out, cuts off flow path.
Embodiment 6
First busbar 1.1 and the second busbar 1.2 is all made of high conductivity material manufacture, preferably, adopting
With T2Y red copper.
Embodiment 7
The insulating barrier 2.2 and movable insulation cutting plate 3 are all made of the insulating materials of resistance to electric arc, preferably, using oxygen
Change aluminium ceramics.
Embodiment 8
The liquid metal 4 is using environment friendly, the liquid metal of high conductivity, preferably, using GaInSn
Alloy.
In the present embodiment, model is around central horizontal axial symmetry, in fact, overall structure also belongs to the invention for rectangular
The scope that patent covers；The surface and horizontal axis that insulating barrier 2.2 and insulation cutting plate 3 are parallel to each other are in 45 ° of angles, practical
On, the scope that the invention patent covers is also belonged to using other angles.
The foregoing is merely presently preferred embodiments of the present invention, all equivalent changes done according to scope of the present invention patent with
Modification, is all covered by the present invention.
Claims (6)
1. a kind of liquid metal breaker, it is characterised in that: including the first busbar (1.1), the second busbar (1.2) and insulation
The closed cavity and be filled in the intracorporal liquid metal of closing chamber (4) that exterior panel (2.1) is constituted further include being arranged in closing chamber
External operating mechanism (5), the electromagnetic repulsion force that the operating mechanism (5) is repulsion dish (5.2) and magnet exciting coil (5.1) forms
Mechanism, the closed cavity, which has in multiple, described closed cavities, is equipped with insulating barrier (2.2), the insulating barrier
(2.2) each closed cavity is divided into two separate chambers, the insulating barrier (2.2) is equipped with connection two chambers
Through flow hole, the Free Surface of the liquid metal (4) is more than the outer rim of through flow hole, is equipped in the chamber suitable with through flow hole
The insulation cutting plate (3) matched, multiple insulation cutting plates (3) are by connecting repulsion dish (5.2) after pull rod series connection.
2. a kind of liquid metal breaker, it is characterised in that: including the first busbar (1.1), the second busbar (1.2) and insulation
The closed cavity and be filled in the intracorporal liquid metal of closing chamber (4) that exterior panel (2.1) is constituted further include being arranged in closing chamber
External operating mechanism (5), the electromagnetic repulsion force that the operating mechanism (5) is repulsion dish (5.2) and magnet exciting coil (5.1) forms
Mechanism, the closed cavity is interior to be equipped with insulating barrier (2.2), and closed cavity is divided into two by the insulating barrier (2.2)
A separate chamber, the insulating barrier (2.2) be equipped with connection two chambers through flow hole, the liquid metal (4) from
Be more than the outer rim of through flow hole by surface, be equipped with the insulation cutting plate (3) being adapted to through flow hole in the chamber, the insulation every
Plate (2.2) and insulation cutting plate (3) have multiple groups, and muti-piece insulation cutting plate (3) connects repulsion dish (5.2) by pull rod.
3. a kind of liquid metal breaker according to claim 1 or 2, which is characterized in that the through flow hole is surface
Counter sink equipped with conical socket, insulation cutting plate (3) end are equipped with the inclined-plane being adapted to conical socket.
4. a kind of liquid metal breaker according to claim 3, which is characterized in that first busbar (1.1)
T2Y red copper is all made of with the second busbar (1.2).
5. a kind of liquid metal breaker according to claim 3, which is characterized in that the insulating barrier (2.2) and
Movable insulation cutting plate (3) is all made of aluminium oxide ceramics.
6. a kind of liquid metal breaker according to claim 3, which is characterized in that the liquid metal (4) uses
GaInSn alloy.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610823637 | 2016-09-14 | ||
| CN201610823637X | 2016-09-14 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106356237A CN106356237A (en) | 2017-01-25 |
| CN106356237B true CN106356237B (en) | 2019-03-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610837417.2A Active CN106356237B (en) | 2016-09-14 | 2016-09-21 | A kind of liquid metal breaker |
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| Country | Link |
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| CN (1) | CN106356237B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112038125B (en) * | 2020-08-27 | 2023-08-25 | 云南电网有限责任公司大理供电局 | Power switch for protecting electrode |
| CN112271507A (en) * | 2020-11-05 | 2021-01-26 | 刘春晓 | Conductive connecting piece for realizing conductivity based on liquid metal |
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| CN101394085A (en) * | 2008-10-29 | 2009-03-25 | 西安交通大学 | Current limiting device based on quick converting switch and liquid metal current limiting device, current limiting method therefor |
| CN201449920U (en) * | 2009-05-21 | 2010-05-05 | 成珍凤 | Power switch |
| CN102800506A (en) * | 2012-08-19 | 2012-11-28 | 中国船舶重工集团公司第七一二研究所 | Permanent-magnet rapid operation mechanism |
| CN103280363A (en) * | 2013-06-22 | 2013-09-04 | 瞿洪贵 | Mercury switch |
| CN104091717A (en) * | 2014-07-25 | 2014-10-08 | 西安交通大学 | Novel self-energy type liquid metal current limiter and method |
| CN104124094A (en) * | 2014-08-17 | 2014-10-29 | 中国船舶重工集团公司第七一二研究所 | Liquid metal current limiter for ship |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2355422Y (en) * | 1998-04-27 | 1999-12-22 | 吴剑男 | Contactless explosionproof A.C. contactor |
| CN1820338A (en) * | 2003-07-10 | 2006-08-16 | Abb研究有限公司 | Method and device for power braking with a fluid-operated liquid metal current switch |
-
2016
- 2016-09-21 CN CN201610837417.2A patent/CN106356237B/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101394085A (en) * | 2008-10-29 | 2009-03-25 | 西安交通大学 | Current limiting device based on quick converting switch and liquid metal current limiting device, current limiting method therefor |
| CN201449920U (en) * | 2009-05-21 | 2010-05-05 | 成珍凤 | Power switch |
| CN102800506A (en) * | 2012-08-19 | 2012-11-28 | 中国船舶重工集团公司第七一二研究所 | Permanent-magnet rapid operation mechanism |
| CN103280363A (en) * | 2013-06-22 | 2013-09-04 | 瞿洪贵 | Mercury switch |
| CN104091717A (en) * | 2014-07-25 | 2014-10-08 | 西安交通大学 | Novel self-energy type liquid metal current limiter and method |
| CN104124094A (en) * | 2014-08-17 | 2014-10-29 | 中国船舶重工集团公司第七一二研究所 | Liquid metal current limiter for ship |
Non-Patent Citations (1)
| Title |
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| "电磁斥力机构设计方法研究";姜楠;《中国优秀硕士学位论文全文数据库 工程科技Ⅱ辑》;20131215(第12期);第7-10页 |
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| Publication number | Publication date |
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| CN106356237A (en) | 2017-01-25 |
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