CN101477914B - Single-pole double-throw vacuum additron with conical contact tip - Google Patents
Single-pole double-throw vacuum additron with conical contact tip Download PDFInfo
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- CN101477914B CN101477914B CN2008101196714A CN200810119671A CN101477914B CN 101477914 B CN101477914 B CN 101477914B CN 2008101196714 A CN2008101196714 A CN 2008101196714A CN 200810119671 A CN200810119671 A CN 200810119671A CN 101477914 B CN101477914 B CN 101477914B
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Abstract
The invention provides a single-pole double throw (SPDT) vacuum switch tube with a conical contact, which is characterized in that the switch tube comprises a porcelain casing and two pairs of opposite contacts arranged in the porcelain casing; each contact pair comprises a moving contact, a first fix contact and a second fix contact; and the interface of the moving contact opposite to the second fix contact is in the shape of a cone. The vacuum switch tube provided with the conical contact increases the contact area of the vacuum switch tube contacts and the contact accuracy, thereby causing high current operation of the vacuum switch tube to be achieved.
Description
Technical field
The present invention relates to a kind of single-pole double-throw vacuum additron, particularly on this vacuum switch tube, have the contact of taper, with the contact area that increases contact with contact accuracy; Also be provided with anti-circulation short circuit and arc extinguishing structure simultaneously on this single-pole double-throw vacuum additron, belong to the electric switch technical field.
Background technology
Existing vacuum switch Manifold technology all is in a body a pair of contact to be housed, or an auxiliary earth contact is arranged, and can not flow through big electric current as single-pole double throw and use.Single contact vacuum switch tube is real to manifest the single-pole double throw function if use, and will use two covering devices, has increased cost, has reduced reliability.Therefore, be necessary to design a kind of vacuum switch tube of realizing the single-pole double throw controlled function.Yet, owing to adopted two pairs of contacts right, make in the loop, to be easy to generate the circulation short circuit for single-pole double-throw vacuum additron.Therefore, be necessary in this single-pole double-throw vacuum additron, to design the structure that prevents the circulation short circuit.Simultaneously, because the contact space is limited, between contact, form electric arc easily.Therefore, also be necessary to design corresponding arc extinguishing structure.
In addition, the contact in the existing vacuum switch tube adopts the plane contact mode more.This plane contact contact tends to cause that because the inaccurate or contact-making surface in contact contact-making surface location own is uneven contact area diminishes.This makes this contact be difficult to realize that big electric current passes through.In order to realize the big current work of vacuum switch tube, the present invention adopted conical contact tip with the contact area that increases contact with contact accuracy.
Summary of the invention
Goal of the invention of the present invention is to provide a kind of vacuum switch tube that has conical contact tip, to realize the big current work of vacuum switch tube.
Goal of the invention of the present invention also is to provide the anti-circulation short circuit and the arc extinguishing structure of this single-pole double-throw vacuum additron.
Goal of the invention of the present invention is achieved by following technical proposals:
Have the single-pole double-throw vacuum additron of conical contact tip, it is characterized in that: comprise a ceramic shell, the contact relative with two couple who in ceramic shell, is provided with; These two contacts are decided contact and second and are decided contact comprising moving contact, first; Described second decides contact is divided into two vacuum chambers up and down with ceramic shell;
Described first decides the top that contact is arranged on ceramic shell, passes the upper cover plate of ceramic shell; This first lower end of deciding contact is provided with first fixed contact; This first fixed contact is corresponding with described moving contact;
Described moving contact is positioned at the last vacuum chamber of ceramic shell; Be provided with first moving contact in the upper end of moving contact; This first moving contact is corresponding with described first fixed contact; Following binding post of the following termination of moving contact, this time binding post pass described second lower cover of deciding contact and ceramic shell successively; This moving contact and second is decided the contact-making surface of contact for conical; Decide at this moving contact relative second on the contact-making surface of contact with the second moving contact contact.
Described second decides contact comprises and decides contact base, decides the contact tray and second fixed contact; Level offers two clamp bar slots on the sidewall of described ceramic shell;
Describedly decide contact base and decide the contact base snap ring by two and constitute; Should decide the contact base snap ring and be respectively annulus half, complete circle of two common formations of snap ring; Be provided with the snap ring connecting portion in the junction of described two snap rings; Ring and outer shroud in the described annulus of deciding the contact base snap ring partly is divided into; Ring can constitute a complete annulus in described, and outer shroud is then corresponding with two clamp bar slots that described ceramic shell sidewall is offered; Two snap rings are installed in respectively in two clamp bar slots that described ceramic shell sidewall offered;
Described decide contact tray be one cylindrical; Be provided with in the described outside of deciding contact tray and fasten ring; This external diameter that fastens ring is greater than the described internal diameter of deciding to encircle in the contact base, less than the internal diameter of ceramic shell; Describedly decide contact tray and fasten ring by this and fasten in described and decide on the contact base; Decide contact tray and be concaved with taper seat described with respect to the one side correspondence of described moving contact;
It is conical that described second fixed contact is, corresponding with described second moving contact; This second fixed contact is embedded in the described groove of deciding contact tray.
Describedly decide contact base, decide contact tray, all adopt soldering tech to be weldingly connected between second fixed contact and the ceramic shell.
Described first fixed contact, first moving contact, second moving contact, second fixed contact all adopt exotic material to make; Described exotic material is copper-tungsten alloy.
In the described slit of deciding contact base, deciding to leave on the contact tray and second fixed contact a mutual correspondence; The width in described slit is between 1mm-5mm.
In described ceramic shell arranged outside the arc extinguishing magnet ring is arranged; This arc extinguishing magnet ring is made of two semicircular rings; This two semicircular rings, one end hinge connects, and the other end connects with a bolt; Described arc extinguishing magnet ring passes through this bolted in the ceramic shell outside, and is corresponding to the position with described contact; On the annulus of described arc extinguishing magnet ring, evenly have the cylindrical groove of ceramic shell radial direction; In each cylindrical groove, be equiped with the cylindricality permanent magnet.
At least one makes the semicircular rings of described arc extinguishing magnet ring and bolt for insulating material.
The magnet polarity of the cylindricality permanent magnet of installing on the described arc extinguishing magnet ring is consistent in the radial direction ceramic shell.
On described moving contact, also be provided with barrier ring; This barrier ring is arranged between first moving contact and second moving contact, and and ceramic shell between only leave a long and narrow slit.
The invention has the beneficial effects as follows and be:
1, the invention provides a kind of vacuum switch tube that has conical contact tip, the contact area that has increased the vacuum switch tube contact with contact accuracy, make the big current work of vacuum switch tube be achieved;
2, the present invention decides to have on the contact slit at second of vacuum switch tube, to prevent deciding to produce loop current on the contact; Also be equiped with the arc extinguishing magnet ring, breaking the plasma that is produced when contact disconnects, thereby reach the effect of arc extinguishing in the switching tube outside.
Description of drawings
Fig. 1 is the basic block diagram of the vacuum switch tube of conical contact tip;
Fig. 2 is for deciding the contact base structure chart;
Fig. 3 is for deciding the contact tray structure chart;
Fig. 4 is the second fixed contact structure chart;
Fig. 5 second decides the contact assembly drawing;
Fig. 6 is an arc extinguishing magnet ring structure chart;
Fig. 7 is the ceramic shell stereogram;
Fig. 8 is the stereogram that the vacuum switch tube of arc extinguishing magnet ring is installed.
Embodiment
Below in conjunction with drawings and Examples the present invention is further described.
Fig. 1 is the basic block diagram of single-pole double-throw vacuum additron of the present invention.This vacuum switch tube that has conical contact tip comprises an integrated ceramic shell 3, is provided with two pairs of relative contacts in ceramic shell 3.These two contacts are decided contact 4 and second and are decided contact 1 comprising a moving contact 2, first.First decides contact 4 and moving contact 2, and to constitute first contact right, and second decide contact 1 right with moving contact 2 formations second contact.This second decides contact 1 in ceramic shell 3, and this ceramic shell 3 is divided into two vacuum chambers up and down.
First decides the top that contact 4 is arranged on ceramic shell 3, passes the upper cover plate of ceramic shell 3.This first lower end of deciding contact 4 is provided with first fixed contact 41, and is corresponding with moving contact 2.This first fixed contact 41 adopts exotic material to make.Described exotic material can adopt materials such as copper-tungsten alloy.
Moving contact 2 is positioned at the last vacuum chamber of ceramic shell 3.Be provided with first moving contact 21 in the upper end of moving contact 2.This first moving contact 21 is corresponding with above-mentioned first fixed contact 41.And these first moving contact, 21 same exotic materials that adopt are made.Following binding post of the following termination of moving contact 2, this time binding post pass second lower cover of deciding contact 1 and ceramic shell 3 successively.This moving contact 2 and second is decided the contact-making surface of contact 1 for conical, and uses exotic material as second moving contact 22 with one deck on this contact-making surface.Because second moving contact 22 and second contact-making surface of deciding contact are designed to taper shape, have increased the contact area of contact, and the accuracy of contact contact is improved, thereby be achieved the big current work of vacuum switch tube.
Second decides contact 1 comprises and decides contact base 11, decides the contact tray 12 and second fixed contact 13.As shown in Figure 7, level offers two clamp bar slots on the sidewall of ceramic shell 3.As described in Figure 2, describedly decide contact base 11 and decide contact base snap ring 11A, 11B by two and constitute.Decide contact base snap ring 11A, 11B and be respectively annulus half, complete circle of two common formations of snap ring.Be provided with snap ring connecting portion 11C in the junction of two snap rings, this snap ring connecting portion 11C also is the electrode junction of deciding contact simultaneously.Ring and outer shroud in the annulus of described snap ring 11A, 11B partly is divided into, ring can constitute a complete annulus in it, and its outer shroud is then corresponding with two clamp bar slots that ceramic shell 3 sidewalls are offered.Referring to Fig. 1, two snap ring 11A, 11B just can be installed in respectively in two clamp bar slots that ceramic shell 3 sidewalls offer, and ring can form a complete circle in it in ceramic shell 3 chambeies.As shown in Figure 3, this decide contact tray 12 integral body be one cylindrical.Be provided with in the outside of deciding contact tray 12 and fasten ring 12A.This fastens ring 12A external diameter greater than the internal diameter of deciding ring in the contact base 11, less than the internal diameter of ceramic shell 3, makes that deciding contact tray 7 can fasten in deciding on the contact base 11.Be concaved with taper seat deciding the one side correspondence of contact tray 12 with respect to moving contact 2.As shown in Figure 4, this second fixed contact 13 is and 21 corresponding conical contacts, moving contact contact, and adopts exotic material to make equally.This second fixed contact 13 is embedded in the groove of deciding contact tray 12.As shown in Figure 5, describedly decide contact base 11, decide contact tray 12, second fixed contact 13 assembles the contact of deciding that forms.Wherein, decide contact base 11, decide all to adopt soldering tech to be weldingly connected between contact tray 12, second fixed contact 13 and the ceramic shell 3.
Because vacuum switch tube of the present invention is a single-pole double-throw vacuum additron, when two contact centering one end connected, the just easy contact of deciding at the other end produced the circulation short circuit on every side.Shown in Fig. 2 to 5, the present invention's design is being decided contact base 11, is being decided to leave on the contact tray 12 and second fixed contact 13 a corresponding mutually slit.This gap width is between 1mm-5mm.This slit can be so that can't form the loop at the loop current of deciding will produce on the contact, thereby prevented the generation of vacuum switch tube circulation short circuit.
In addition,, might in breaking process, between contact, form electric arc, influence the electric property of switching tube because the electric current that vacuum switch tube flows through is bigger.Therefore, the present invention has also designed arc extinguishing magnet ring 5 outside ceramic shell 3, the plasma that is produced when loosing the contact separation in order to draw.Referring to Fig. 1, Fig. 6, arc extinguishing magnet ring 5 is made of two semicircular rings, and two semicircular rings are made by non-magnetic conductive metal or organic material.This two semicircular rings, one end hinge connects, and the other end connects with a bolt 51.Arc extinguishing magnet ring 5 is fastened on ceramic shell 3 outsides by this bolt 51, and is corresponding to the position with second contact head.Should be pointed out that equally on arc extinguishing magnet ring 5, to produce loop current that at least one makes described two semicircular rings and bolt 51 for insulating material in order to prevent.On the annulus of arc extinguishing magnet ring 5, evenly have the cylindrical groove 52 of ceramic shell 3 radial direction.In each cylindrical groove 52, be equiped with cylindricality permanent magnet 53.The magnet polarity of the cylindricality permanent magnet of being installed 53 should be in the unanimity in the radial direction of ceramic shell 3.When vacuum switch tube was broken, because the cylindricality permanent magnet 53 formed the action of a magnetic fields in the arc extinguishing magnet ring 5, the plasma that is produced between the contact was drawn diffusing rapidly, thereby reaches the effect of arc extinguishing.
Fig. 8 is the stereogram that the vacuum switch tube of above-mentioned arc extinguishing magnet ring 5 is installed.
In addition because two close together that contact is right, in the electrode handoff procedure easily contact between produce short circuiting arc.Referring to Fig. 1, for further avoiding this situation, the present invention also moving contact 2 is provided with barrier ring 23.This barrier ring 23 is arranged between first moving contact 21 and second moving contact 22, and and ceramic shell 3 between only leave a long and narrow slit, to intercept the formation of short circuiting arc, protect two contacts that band is carried a switching.
Claims (8)
1. the single-pole double-throw vacuum additron that has conical contact tip, it comprises a contact that ceramic shell is relative with two couple who is provided with in ceramic shell; These two pairs of contacts comprise that moving contact, first decides contact and second and decide contact; Described second decides contact is divided into two vacuum chambers up and down with ceramic shell;
Described first decides the top that contact is arranged on ceramic shell, passes the upper cover plate of ceramic shell; This first lower end of deciding contact is provided with first fixed contact; This first fixed contact is corresponding with described moving contact;
Described moving contact is positioned at the last vacuum chamber of ceramic shell; Be provided with first moving contact in the upper end of moving contact; This first moving contact is corresponding with described first fixed contact; It is characterized in that:
Following binding post of the following termination of described moving contact, this time binding post pass described second lower cover of deciding contact and ceramic shell successively;
Described moving contact and described second is decided the contact-making surface of contact for conical; Decide at this moving contact relative second on the contact-making surface of contact with second moving contact;
Described second decides contact comprises and decides contact base, decides the contact tray and second fixed contact; Level offers two clamp bar slots on the sidewall of described ceramic shell;
Describedly decide contact base and decide the contact base snap ring by two and constitute; Should decide the contact base snap ring and be respectively annulus half, complete circle of two common formations of snap ring; Be provided with the snap ring connecting portion in the junction of described two snap rings; Ring and outer shroud in the described annulus of deciding the contact base snap ring partly is divided into; Ring can constitute a complete annulus in described, and outer shroud is then corresponding with two clamp bar slots that described ceramic shell sidewall is offered; Two snap rings are installed in respectively in two clamp bar slots that described ceramic shell sidewall offered;
Described decide contact tray be one cylindrical; Be provided with in the described outside of deciding contact tray and fasten ring; This external diameter that fastens ring is greater than the described internal diameter of deciding to encircle in the contact base, less than the internal diameter of ceramic shell; Describedly decide contact tray and fasten ring by this and fasten in described and decide on the contact base; Decide contact tray and be concaved with taper seat described with respect to the one side correspondence of described moving contact;
It is conical that described second fixed contact is, corresponding with described second moving contact; This second fixed contact is embedded in describedly to be decided in the groove that contact tray forms by taper seat.
2. vacuum switch tube as claimed in claim 1 is characterized in that: describedly decide contact base, decide contact tray, all adopt soldering tech to be weldingly connected between second fixed contact and the ceramic shell.
3. vacuum switch tube as claimed in claim 1 is characterized in that: described first fixed contact, first moving contact, second moving contact, second fixed contact all adopt exotic material to make; Described exotic material is copper-tungsten alloy.
4. vacuum switch tube as claimed in claim 1 is characterized in that: in the described slit of deciding contact base, deciding to leave on the contact tray and second fixed contact a mutual correspondence; The width in described slit is between 1mm-5mm.
5. vacuum switch tube as claimed in claim 1 is characterized in that: in described ceramic shell arranged outside the arc extinguishing magnet ring is arranged; This arc extinguishing magnet ring is made of two semicircular rings; This two semicircular rings, one end hinge connects, and the other end connects with a bolt; Described arc extinguishing magnet ring passes through this bolted in the ceramic shell outside, and is corresponding to the position with described contact; On the annulus of described arc extinguishing magnet ring, evenly have the cylindrical groove of ceramic shell radial direction; In each cylindrical groove, be equiped with the cylindricality permanent magnet.
6. vacuum switch tube as claimed in claim 5 is characterized in that: at least one makes the semicircular rings of described arc extinguishing magnet ring and bolt for insulating material.
7. vacuum switch tube as claimed in claim 5 is characterized in that: the magnet polarity of the cylindricality permanent magnet of installing on the described arc extinguishing magnet ring is consistent in the radial direction ceramic shell.
8. vacuum switch tube as claimed in claim 1 is characterized in that: also be provided with barrier ring on described moving contact; This barrier ring is arranged between first moving contact and second moving contact, and and ceramic shell between only leave a long and narrow slit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008101196714A CN101477914B (en) | 2008-09-05 | 2008-09-05 | Single-pole double-throw vacuum additron with conical contact tip |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008101196714A CN101477914B (en) | 2008-09-05 | 2008-09-05 | Single-pole double-throw vacuum additron with conical contact tip |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101477914A CN101477914A (en) | 2009-07-08 |
| CN101477914B true CN101477914B (en) | 2011-07-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008101196714A Active CN101477914B (en) | 2008-09-05 | 2008-09-05 | Single-pole double-throw vacuum additron with conical contact tip |
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| Country | Link |
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| CN (1) | CN101477914B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103551718A (en) * | 2013-11-07 | 2014-02-05 | 上海梅达焊接设备有限公司 | High-current switching device |
| DE102017113416B3 (en) * | 2017-06-19 | 2018-06-07 | Fixtest Prüfmittelbau GmbH | MICROSWITCH AND TEST SYSTEM |
| CN107799353B (en) * | 2017-12-06 | 2020-04-14 | 广东电网有限责任公司江门供电局 | Arc contact seat applied to SF6 arc extinguish chamber |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1329725A (en) * | 1970-07-01 | 1973-09-12 | Inst Pruffeld Fuer Elektrische | Electrical switch for high voltages |
| DE3346778A1 (en) * | 1983-12-23 | 1985-07-04 | Siemens AG, 1000 Berlin und 8000 München | Contact arrangement for vacuum switches |
| CN2071383U (en) * | 1990-06-08 | 1991-02-13 | 无锡市无线电元件三厂 | Low voltage double motion electrode vacuum arc-suppression room |
| CN1416586A (en) * | 2000-06-23 | 2003-05-07 | 西门子公司 | Vacuum interrupter with two contact sysems |
-
2008
- 2008-09-05 CN CN2008101196714A patent/CN101477914B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1329725A (en) * | 1970-07-01 | 1973-09-12 | Inst Pruffeld Fuer Elektrische | Electrical switch for high voltages |
| DE3346778A1 (en) * | 1983-12-23 | 1985-07-04 | Siemens AG, 1000 Berlin und 8000 München | Contact arrangement for vacuum switches |
| CN2071383U (en) * | 1990-06-08 | 1991-02-13 | 无锡市无线电元件三厂 | Low voltage double motion electrode vacuum arc-suppression room |
| CN1416586A (en) * | 2000-06-23 | 2003-05-07 | 西门子公司 | Vacuum interrupter with two contact sysems |
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| Publication number | Publication date |
|---|---|
| CN101477914A (en) | 2009-07-08 |
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