CN105390324B - Power switch, power circuit and power system - Google Patents
Power switch, power circuit and power system Download PDFInfo
- Publication number
- CN105390324B CN105390324B CN201510798132.8A CN201510798132A CN105390324B CN 105390324 B CN105390324 B CN 105390324B CN 201510798132 A CN201510798132 A CN 201510798132A CN 105390324 B CN105390324 B CN 105390324B
- Authority
- CN
- China
- Prior art keywords
- liquid metal
- gate
- spherical
- power switch
- container
- 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.)
- Active
Links
- 229910001338 liquidmetal Inorganic materials 0.000 claims abstract description 53
- 239000007788 liquid Substances 0.000 claims description 6
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 claims description 6
- 229910052721 tungsten Inorganic materials 0.000 claims description 6
- 239000010937 tungsten Substances 0.000 claims description 6
- 229910052751 metal Inorganic materials 0.000 claims description 4
- 239000002184 metal Substances 0.000 claims description 4
- 239000007787 solid Substances 0.000 claims description 4
- 230000008016 vaporization Effects 0.000 claims description 4
- 238000009834 vaporization Methods 0.000 claims description 4
- 229910000807 Ga alloy Inorganic materials 0.000 claims description 3
- 239000004020 conductor Substances 0.000 claims description 3
- 229910052738 indium Inorganic materials 0.000 claims description 3
- APFVFJFRJDLVQX-UHFFFAOYSA-N indium atom Chemical compound [In] APFVFJFRJDLVQX-UHFFFAOYSA-N 0.000 claims description 3
- 238000007789 sealing Methods 0.000 claims description 3
- 239000000126 substance Substances 0.000 claims description 3
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 230000005611 electricity Effects 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- 238000010301 surface-oxidation reaction Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H29/00—Switches having at least one liquid contact
- H01H29/16—Switches having at least one liquid contact operated by dipping soil contact into stationary contact liquid
-
- 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
Abstract
A power switch comprises a gate (1), a container (2), a support body (3), liquid metal (21), a first electrical node (IN+) and a second electrical node (IN-). The gate (1) is provided with a spherical contact; the spherical contact is provided with spherical cavities (10); the spherical centers of the spherical cavities (10) are within the surface of the spherical contact; and each spherical cavity (10) is provided with a circular opening (101) making the spherical cavity (10) and the outside communicated on the surface of the spherical contact; and the diameter of the circular openings (101) is smaller than that of the spherical cavities (10). A power circuit comprises the power switch. A power system comprises the power switch. The power switch of the invention is low in cost, flexible in application, long in service life, and stable and reliable.
Description
Technical field
The invention belongs to electricity field, a kind of power switch, power circuit, power system.
Background technology
Existing power switch always be unable to do without metal solid-state plug-in strip, and power switch it is disconnected it is open and close afterwards always
The presence of arcing is difficult to avoid that, arcing is easily caused the subregion vaporization on solid metallic plug-in strip surface oxidation, surface, and surface becomes
Shape, any surface finish changed condition, so as to cause device for switching characteristic to be deteriorated, is damaged caused by normally opened for Jing-disconnected switch arcing
Consumption is quite serious.
The content of the invention
Describe in solve the problems, such as technical background, a kind of power switch of the invention, power circuit, power system.
The present invention has following technology contents.
A kind of power switch, including gate（1）, container（2）, supporting mass（3）, liquid metal（21）, the first electrical node
（IN+）, the second electrical node（IN-）；
Gate（1）With spherical contact, there is spherical cavity on spherical contact（10）, spherical cavity（10）The centre of sphere be located at
Within the surface of spherical contact, spherical cavity（10）Constituting in spherical contact surface makes spherical cavity（10）The circle communicated with outside
Shape opening（101）, circular open（101）Diameter be less than spherical cavity（10）Diameter；
Container（2）It is made up of conductor；
Liquid metal（21）Contain in container（2）It is interior, liquid metal（21）Volume be less than container（2）Volume；
Supporting mass（3）One end be fixedly linked with container, supporting mass（3）The other end and gate（1）Movable connection is constituted,
Supporting mass（3）It is overall to embody insulating properties；
First electrical node（IN+）With gate（1）In being electrically connected；
Second electrical node（IN-）With container（2）In being electrically connected；
Gate（1）Spherical contact can be immersed in liquid metal（21）In so that the first electrical node（IN+）With second
Electrical node（IN-）Between form electric path, gate（1）Spherical contact can completely disengage from liquid metal（21）To realize
First electrical node（IN+）With the second electrical node（IN-）Between form open circuit, work as gate（1）Spherical contact submergence
Liquid metal can be entered in the spherical cavity of spherical contact when in liquid metal, work as gate（1）Spherical contact from by liquid
When being changed into departing from liquid metal in the state of immersion metal, the liquid metal in spherical cavity can be in the presence of surface tension still
It is old to remain in spherical cavity and formed liquid metal globule（201）, liquid metal globule（201）Surface can project gate
（1）Spherical contact surface, so as to formed electric discharge top so that gate（1）Discharge position be located at liquid metal globule
（201）On；And liquid metal is liquid has no solid shape in itself, therefore the vaporization of liquid metal is recoverable to be not in
The change of any surface finish situation and damage electrical characteristic；Gate（1）The structure of spherical contact can make liquid metal globule（201）
Retain a period of time, so can alleviate the power switch of frequent opening and closing from be disconnected to closure when arcing to the electric spy of power switch
The damage of property.
Described gate is made up of tungsten.
The circular open on spherical contact on described gate（101）Diameter less than four points of diameter of spherical cavity
One of.
Described container is made using tungsten.
Described liquid metal is indium gallium alloy.
Described liquid metal is hydrargyrum.
Described supporting mass is the entirety that single substance is constituted.
Described gate, container are installed in sealing container.
A kind of power circuit, with the power switch described in above content.
A kind of power system, with the power switch described in above content.
Technology contents are illustrated and its advantage.
The spherical contact surface of the present invention
The present invention is with low cost, application flexibly, it is electrical endurance length, reliable and stable.
Description of the drawings
Accompanying drawing 1 is the schematic diagram of embodiment 1.
Accompanying drawing 2 is the profile of the spherical contact of the gate of Fig. 1, and E-E is section label.
If Fig. 3 is schematic diagram when embodiment 1 is closed, the spherical contact of gate is immersed in liquid metal.
Such as Fig. 4 is embodiment 1 from the schematic diagram for being closed into disconnection, and the spherical contact of gate is departing from liquid metal.
Accompanying drawing 5 is the profile of the spherical contact of the gate of Fig. 4, and E-E is section label.
If Fig. 6 is the enlarged drawing of the spherical re-entrant portion on the spherical contact of gate.
It is embodied as example
Below in conjunction with embodiment, the present invention will be described.
Embodiment 1, as shown in figures 1 to 6, a kind of power switch, including gate 1, container 2, supporting mass 3, liquid metal
21st, the first electrical node IN+, the second electrical node IN-；
Gate 1 has spherical contact, and the centre of sphere on spherical contact with spherical cavity 10, spherical cavity 10 is located at spherical touching
Within the surface of head, spherical cavity 10 constitutes the circular open 101 for making spherical cavity 10 communicate with outside in spherical contact surface,
Diameter of the diameter of circular open 101 less than spherical cavity 10；
Container 2 is made up of conductor；
Liquid metal 21 is contained in container 2, and the volume of liquid metal 21 is less than the volume of container 2；
One end of supporting mass 3 is fixedly linked with container, and the other end of supporting mass 3 is constituted with gate 1 and is movably connected, supporting mass
3 overall embodiment insulating properties；
First electrical node IN+ is in be electrically connected with gate 1；
Second electrical node IN- is in be electrically connected with container 2；
The spherical contact of gate 1 can be immersed in liquid metal 21 so that the first electrical node IN+ and second is electrically saved
Electric path is formed between point IN-, the spherical contact of gate 1 can completely disengage from liquid metal 21 to realize the first electrical node
Open circuit is formed between IN+ and the second electrical node IN-, the liquid when the spherical contact of gate 1 is immersed in liquid metal
Metal can be entered in the spherical cavity of spherical contact, when the spherical contact of gate 1 is changed into from by the state of liquid metal submergence
When departing from liquid metal, the liquid metal in spherical cavity can be still remained in spherical cavity simultaneously in the presence of surface tension
Liquid metal globule 201 is formed, the surface of liquid metal globule 201 can project the surface of the spherical contact of gate 1, so as to be formed
Electric discharge top, so that the discharge position of gate 1 is located on liquid metal globule 201；And liquid metal be liquid itself simultaneously
Without solid shape, therefore the vaporization of liquid metal is recoverable to be not in the change of any surface finish situation and damage electric spy
Property；The structure of the spherical contact of gate 1 can be such that liquid metal globule 201 retains a period of time, and then can alleviate frequently opening and closing
Power switch from be disconnected to closure when damage of the arcing to power switch electrical characteristic.
Described gate is made up of tungsten.
The diameter of the circular open 101 on spherical contact on described gate less than spherical cavity diameter four/
One.
Described container is made using tungsten.
Described liquid metal is indium gallium alloy.
Described supporting mass is the entirety that single substance is constituted.
Embodiment 2, on the basis of embodiment 1, by gate, case in sealing container.
Embodiment 3, a kind of power circuit, with the power switch described in embodiment 1.
Embodiment 4, a kind of power system, with the power switch described in embodiment 1.
The unknown place of this explanation is prior art or common knowledge, therefore is not repeated.
Claims (10)
1. a kind of power switch, it is characterised in that：Including gate（1）, container（2）, supporting mass（3）, liquid metal（21）, first
Electrical node（IN+）, the second electrical node（IN-）；
Gate（1）With spherical contact, there is spherical cavity on spherical contact（10）, spherical cavity（10）The centre of sphere be located at it is spherical
Within the surface of contact, spherical cavity（10）Constituting in spherical contact surface makes spherical cavity（10）The circle communicated with outside is opened
Mouthful（101）, circular open（101）Diameter be less than spherical cavity（10）Diameter；
Container（2）It is made up of conductor；
Liquid metal（21）Contain in container（2）It is interior, liquid metal（21）Volume be less than container（2）Volume；
Supporting mass（3）One end be fixedly linked with container, supporting mass（3）The other end and gate（1）Constitute movable connection, supporting
Body（3）It is overall to embody insulating properties；
First electrical node（IN+）With gate（1）In being electrically connected；
Second electrical node（IN-）With container（2）In being electrically connected；
Gate（1）Spherical contact can be immersed in liquid metal（21）In so that the first electrical node（IN+）It is electric with second
Node（IN-）Between form electric path, gate（1）Spherical contact can completely disengage from liquid metal（21）To realize first
Electrical node（IN+）With the second electrical node（IN-）Between form open circuit, work as gate（1）Spherical contact be immersed in liquid
Liquid metal can be entered in the spherical cavity of spherical contact when in state metal, work as gate（1）Spherical contact from by liquid metal
When being changed into departing from liquid metal in the state of submergence, the liquid metal in spherical cavity can still be deposited in the presence of surface tension
Stay in spherical cavity and formed liquid metal globule（201）, liquid metal globule（201）Surface can project gate（1）'s
The surface of spherical contact, so as to form electric discharge top, so that gate（1）Discharge position be located at liquid metal globule（201）
On；And liquid metal is liquid has no solid shape in itself, thus the vaporization of liquid metal be it is recoverable be not in surface
The change of bright and clean situation and damage electrical characteristic；Gate（1）The structure of spherical contact can make liquid metal globule（201）Retain
For a period of time, so can alleviate the power switch of frequent opening and closing from be disconnected to closure when arcing to power switch electrical characteristic
Damage.
2. a kind of power switch as claimed in claim 1, it is characterised in that：Described gate is made up of tungsten.
3. a kind of power switch as claimed in claim 1, it is characterised in that：The circle on spherical contact on described gate
Opening（101）Diameter less than spherical cavity diameter a quarter.
4. a kind of power switch as claimed in claim 1, it is characterised in that：Described container is made using tungsten.
5. a kind of power switch as claimed in claim 1, it is characterised in that：Described liquid metal is indium gallium alloy.
6. a kind of power switch as claimed in claim 1, it is characterised in that：Described liquid metal is hydrargyrum.
7. a kind of power switch as claimed in claim 1, it is characterised in that：Described supporting mass is that single substance is constituted
It is overall.
8. a kind of power switch as claimed in claim 1, it is characterised in that：Described gate, container are installed in sealing to be held
In device.
9. a kind of power circuit, it is characterised in that：With arbitrary described power switch in claim 1-8.
10. a kind of power system, it is characterised in that：With arbitrary described power switch in claim 1-8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510798132.8A CN105390324B (en) | 2015-11-19 | 2015-11-19 | Power switch, power circuit and power system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510798132.8A CN105390324B (en) | 2015-11-19 | 2015-11-19 | Power switch, power circuit and power system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105390324A CN105390324A (en) | 2016-03-09 |
| CN105390324B true CN105390324B (en) | 2017-04-26 |
Family
ID=55422496
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510798132.8A Active CN105390324B (en) | 2015-11-19 | 2015-11-19 | Power switch, power circuit and power system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105390324B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107968013B (en) * | 2017-11-28 | 2019-03-22 | 清华大学 | A kind of liquid metal switch system combined based on biologic specificity identification |
| CN112053883A (en) * | 2020-08-27 | 2020-12-08 | 陈艳 | Power switch |
| 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 |
| CN112053882B (en) * | 2020-08-27 | 2023-05-12 | 河北能瑞科技有限公司 | Power switch capable of preventing electric arc strain |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2696537A (en) * | 1951-07-09 | 1954-12-07 | Remimax Aktiebolag | Arrangement for current impulse relays |
| SU609137A1 (en) * | 1976-10-19 | 1978-05-30 | Vejttsel Oleg V | Switching apparatus contact |
| SU1104597A1 (en) * | 1983-03-29 | 1984-07-23 | Куйбышевский ордена Трудового Красного Знамени политехнический институт им.В.В.Куйбышева | Liquid-metal contact unit |
| SU1120419A1 (en) * | 1983-11-14 | 1984-10-23 | Каунасский Политехнический Институт Им.Антанаса Снечкуса | Contact for switching device |
| DD239266A1 (en) * | 1985-07-10 | 1986-09-17 | Elektroprojekt Anlagenbau Veb | SWITCHING CHAMBER |
| US6891116B2 (en) * | 2003-04-14 | 2005-05-10 | Agilent Technologies, Inc. | Substrate with liquid electrode |
| 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 |
| CN105007068A (en) * | 2015-06-25 | 2015-10-28 | 国网山东省电力公司枣庄供电公司 | Switch, electronic system, electric power system, automatic system and mechanical device |
-
2015
- 2015-11-19 CN CN201510798132.8A patent/CN105390324B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN105390324A (en) | 2016-03-09 |
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| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB03 | Change of inventor or designer information | ||
| CB03 | Change of inventor or designer information |
Inventor after: Zhang Song Inventor after: Yang Fengwen Inventor after: Zhang Jianhua Inventor after: Hou Wen Inventor after: Zhang Rui Inventor after: Li Yanlin Inventor after: Dai Ergang Inventor after: Wang Weishuai Inventor after: Kang Wenwen Inventor after: Wang Shouli Inventor after: Wang Qiang Inventor after: Song Shizhan Inventor after: Li Yuqi Inventor after: Sun Baofeng Inventor after: Chen Ning Inventor after: Liang Zuhui Inventor after: Wang Chuanyong Inventor after: Han Peng Inventor after: Li Jianzhong Inventor after: Zhang Jian Inventor after: Wang Kun Inventor before: Chen Ning Inventor before: Wang Chuanyong Inventor before: Han Peng Inventor before: Wang Kun Inventor before: Dai Ergang Inventor before: Zhang Jian Inventor before: Kang Wenwen Inventor before: Yang Fengwen |
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| GR01 | Patent grant |