CN107123574B - High-voltage direct-current relay capable of improving arc extinguishing capacity - Google Patents
High-voltage direct-current relay capable of improving arc extinguishing capacity Download PDFInfo
- Publication number
- CN107123574B CN107123574B CN201710542829.8A CN201710542829A CN107123574B CN 107123574 B CN107123574 B CN 107123574B CN 201710542829 A CN201710542829 A CN 201710542829A CN 107123574 B CN107123574 B CN 107123574B
- Authority
- CN
- China
- Prior art keywords
- insulating sleeve
- leading
- static contact
- out end
- contact
- 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
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H50/00—Details of electromagnetic relays
- H01H50/54—Contact arrangements
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
- H01H9/30—Means for extinguishing or preventing arc between current-carrying parts
- H01H9/34—Stationary parts for restricting or subdividing the arc, e.g. barrier plate
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Arc-Extinguishing Devices That Are Switches (AREA)
Abstract
The high-voltage direct-current relay for improving arc extinguishing capacity is provided with a frame, a static spring part and a movable spring part, wherein the static spring part is provided with a leading-out end, an insulating sleeve and a static contact; the static contact adopts a step structure, one end of the static contact is connected with the leading-out end, the other end of the static contact is matched with the movable contact, and the static contact is provided with a convex edge; an insulating sleeve is arranged on the static contact; the leading-out end is connected with the static contact by riveting and welding; the movable spring part is arranged below the static contact. Because the stationary contact adopts the step structure, one end of the stationary contact is connected with the leading-out end, the other end of the stationary contact is matched with the movable contact, and the stationary contact is provided with a convex edge. The stationary contact is provided with an insulating sleeve, and the insulating sleeve is provided with a boss. The static contact is inserted into the leading-out end and riveted or welded, and the insulating sleeve is arranged between the static contact and the leading-out end in a step form, so that the insulating distance is increased, and the static contact is not easy to fall off. The switching of high voltage and large current is difficult to realize due to the insufficient length of the disjunction arc. Because the leading-out terminal is inserted into the static contact and adopts a step form, the static contact can be connected by riveting or welding.
Description
Technical Field
The invention relates to a relay, in particular to a high-voltage direct-current relay capable of improving arc extinguishing capacity.
Background
The existing relay is difficult to realize high voltage and large current switching under the non-vacuum condition, when a movable contact and a fixed contact are switched under the load condition, electric arcs can be generated between the contacts, and the electric arcs can move to a certain direction under the action of an external magnetic field. When the load is lifted, the arc length will be longer and it is difficult to achieve disconnection.
At present, the conventional technical scheme is that a ceramic or engineering plastic frame is adopted, a movable reed and a leading-out end are disconnected, a magnetic field (magnetic steel) is arranged outside a cavity, and contacts are switched to form arc blowing.
The relay disclosed in JP2012038683 adopts a built-in ring-shaped permanent magnet (strong magnetic material), when a moving contact and a static contact are switched, an electric arc is generated, and a magnetic ring on a leading-out end sleeve generates a magnetic field action to form magnetic blow. It mainly generates magnetic field to blow off electric arc. The arc blows towards both sides.
Disclosure of Invention
The invention aims to provide a high-voltage direct-current relay capable of improving arc extinguishing capacity.
The invention is provided with a frame, a static spring part and a movable spring part, wherein the static spring part is provided with a leading-out end, an insulating sleeve and a static contact, the static contact adopts a step structure, one end of the static contact is connected with the leading-out end, the other end of the static contact is matched with the movable contact, the static contact is provided with a convex edge, and the convex edge is used for preventing the insulating sleeve from falling off; an insulating sleeve is arranged on the static contact; the leading-out end and the static contact are connected in a riveting and welding mode; the movable spring part is arranged below the static contact.
The insulating sleeve can be a straight cylindrical insulating sleeve or a step-shaped insulating sleeve, the step-shaped insulating sleeve is provided with a boss, and the boss is close to the leading-out end to prevent secondary arcing of the leading-out end; the insulating sleeve can be made of ceramic, plastic or glass.
The magnetic field type magnetic field frame is characterized in that an external magnetic field part can be arranged on the outer side face of the frame, magnetic steel can be adopted as the external magnetic field part, and a yoke iron clamp can be arranged on the outer side face of the external magnetic field part.
The insulating sleeve can be provided with a groove, and the groove can lengthen an electric arc, so that the arc extinguishing effect is improved; the insulating sleeve can adopt an insulating tube, and the insulating sleeve can be of a same arc extinguishing grid structure, so that the insulating distance of the relay can be further increased. When the relay is disconnected, the electric arc can move to the upper end and the lower end under the magnetic blow-out action of the external magnetic field part, and when the electric arc reaches the insulating sleeve of the arc extinguishing grid structure, the arc extinguishing grid structure can divide the long arc into a plurality of short arcs, so that arc extinguishing is facilitated.
The heel part of the leading-out end can be fixedly sealed by adopting an insulating material to form a reinforced insulating structure, secondary arcing is avoided, and the insulating material can adopt epoxy resin and the like.
The insulating sleeve penetrates through the step of the stationary contact, and the stationary contact and the leading-out end are riveted or welded to form an insulating distance.
Compared with the existing high-voltage direct-current relay, the static contact adopts a step structure, one end of the static contact is connected with the leading-out end, the other end of the static contact is matched with the movable contact, and the static contact is provided with the convex edge which is used for preventing the insulating sleeve from falling off. The static contact is provided with an insulating sleeve, the insulating sleeve is provided with a boss, and the boss is used for preventing secondary arcing of the leading-out end part; the insulating sleeve is made of arc extinguishing insulating material, and the insulating sleeve can be made of ceramic, plastic or glass. And the static contact is inserted into the leading-out end and riveted or welded, so that the insulating sleeve is arranged between the static contact and the leading-out end in a step form, when the electric arc moves up and down along the side wall under the action of a magnetic field, the electric arc is extinguished due to non-conduction on the insulating sleeve, the insulating distance is increased, and the electric arc is not easy to fall off. When the electric arc is under the effect of external magnetic field part, electric arc along with metal arcing, when electric arc bumps into insulating cover, form disconnected arc or cooling arc, make electric arc extinguish more easily to do benefit to the arc extinguishing, thereby promote the load switching ability of movable contact and stationary contact. The existing high-voltage direct-current relay is difficult to realize the switching of high voltage and large current due to the short breaking arc length (short insulation distance). Because the leading-out terminal is inserted into the static contact and adopts a step form, the fixed connection of the static contact can be realized by adopting a riveting or welding form. Because the movable spring part is arranged below the static contact, an external magnetic field part is arranged on the outer side surface of the frame, the external magnetic field part can adopt magnetic steel, and a yoke iron clamp can be arranged on the outer side surface of the external magnetic field part.
Drawings
Fig. 1 is a schematic structural composition diagram of an embodiment of the present invention.
Fig. 2 is a schematic view of a stationary contact inserted into a terminal and riveted thereon according to an embodiment of the present invention.
Fig. 3 is a schematic structural view of a straight-tube-type insulating sleeve according to an embodiment of the present invention.
Fig. 4 is a schematic structural diagram of a step-type insulating sleeve according to an embodiment of the present invention.
Fig. 5 is a schematic view of a cylindrical insulating sleeve according to an embodiment of the present invention.
Fig. 6 is a schematic view of a stepped insulating sleeve according to an embodiment of the present invention.
Fig. 7 is an expanded view of the cylindrical insulating sleeve according to the embodiment of the present invention.
Fig. 8 is a schematic view of an extension of the step-type insulating sleeve according to the embodiment of the present invention.
Fig. 9 is a schematic view of a stationary contact according to an embodiment of the present invention.
Fig. 10 is a schematic view of a stationary contact after riveting according to an embodiment of the invention.
Fig. 11 is a schematic view of a stepped cover lead according to an embodiment of the invention.
Fig. 12 is a schematic view of a closed insulating sleeve according to an embodiment of the present invention.
Detailed Description
The following examples will further illustrate the present invention with reference to the accompanying drawings.
Referring to fig. 1 to 12, the embodiment of the invention is provided with a frame a, a static spring part and a dynamic spring part 6, wherein the static spring part is provided with a leading-out end 1, an insulating sleeve 2 and a static contact 4, the static contact 4 adopts a step structure, one end of the static contact 4 is connected with the leading-out end 1, the static contact 4 is provided with a convex edge 41, and the convex edge 41 is used for preventing the insulating sleeve 2 from falling off; the static contact 4 is provided with an insulating sleeve 2; the leading-out terminal 1 and the static contact 4 are connected in a riveting and welding mode; the movable spring portion 6 is provided below the stationary contact 4.
The insulating sleeve 2 adopts a straight cylindrical insulating sleeve 21 or a stepped insulating sleeve 22, the stepped insulating sleeve 22 is provided with a boss 20, and the boss 20 is close to the leading-out terminal 1 so as to prevent secondary arcing of part of the leading-out terminal 1; the insulating sleeve 2 is made of ceramic, plastic or glass.
The external magnetic field part 5 can be arranged on the outer side face of the frame A, the external magnetic field part 5 adopts magnetic steel, and the outer side face of the external magnetic field part 5 can be provided with a yoke iron clamp 3.
The insulating sleeve 2 can be provided with a groove, and the groove can lengthen an electric arc, so that the arc extinguishing effect is improved; the insulating sleeve 2 can adopt an insulating tube, and the insulating sleeve 2 can be of a same arc-extinguishing grid structure, so that the insulating distance of the relay can be further increased. When the relay is disconnected, the electric arc can move to the upper end and the lower end under the magnetic blow-out action of the external magnetic field part 5, and when the electric arc reaches the insulating sleeve 2 of the arc extinguishing grid structure, the arc extinguishing grid structure can divide the long arc into a plurality of short arcs, so that arc extinguishing is facilitated.
The heel part of the leading-out terminal 1 can be fixedly sealed by adopting an insulating material to form a reinforced insulating structure, secondary arcing is avoided, and the insulating material can adopt epoxy resin and the like.
The insulating sleeve 2 penetrates through the step of the stationary contact, and the stationary contact 4 and the leading-out end 1 are riveted or welded, so that an insulating distance is formed between the stationary contact 4 and the leading-out end 1.
The straight-cylinder-type insulating sleeve expanding structure 24 of the embodiment of the invention is shown in fig. 8, and the step-type insulating sleeve expanding structure 23 is shown in fig. 7.
The leading-out terminal 1 can be fixedly sealed by adopting an insulating material to form a reinforced insulating structure, secondary arcing is avoided, and the insulating material can adopt epoxy resin and the like.
An insulating sleeve 2 is sleeved on one end, connected with the leading-out end 1, of the static contact 4, and the static contact 4 and the leading-out end 1 are riveted or welded, so that an insulating distance is formed between the static contact 4 and the leading-out end 1.
Claims (8)
1. The high-voltage direct-current relay is characterized by comprising a frame, a static spring part and a movable spring part, wherein the static spring part is provided with a leading-out end, an insulating sleeve and a static contact, one end of the static contact adopts a step structure, the leading-out end is provided with a through hole, the static contact is provided with the insulating sleeve, after the insulating sleeve is arranged on the static contact, one end of the static contact with the step structure is inserted into the through hole of the leading-out end and is riveted or welded on the leading-out end, the other end of the static contact is matched with the movable contact, the other end of the static contact is provided with a convex edge, and the convex edge is used for preventing the insulating sleeve from falling off; the leading-out end and the static contact are connected in a riveting and welding mode; the movable spring part is arranged below the static contact;
the insulating sleeve is a straight cylindrical insulating sleeve or a step-shaped insulating sleeve, the step-shaped insulating sleeve is provided with a boss, and the boss is close to the leading-out end to prevent secondary arcing of the leading-out end;
the insulating sleeve penetrates through the step of the stationary contact, and the stationary contact and the leading-out end are riveted or welded to form an insulating distance.
2. The high-voltage direct-current relay with the arc extinguishing capability improved according to claim 1, wherein the insulating sleeve is made of ceramic, plastic or glass.
3. The high-voltage direct-current relay with the arc extinguishing capability improved according to claim 1, wherein an external magnetic field part is arranged on the outer side face of the frame.
4. The high-voltage direct-current relay with the arc extinguishing capability improved according to claim 3, wherein the external magnetic field part is made of magnetic steel.
5. The high-voltage direct-current relay with the arc extinguishing capability improved according to claim 3 or 4, characterized in that a yoke iron clamp is arranged on the outer side face of the external magnetic field portion.
6. The high-voltage direct current relay with improved arc extinguishing capability according to claim 1, wherein the insulating sleeve is provided with a groove.
7. The high-voltage direct-current relay with the improved arc extinguishing capability of claim 1, wherein the insulating sleeve is an insulating tube, and the insulating sleeve is of an arc extinguishing grid structure and is used for increasing the insulating distance of the relay.
8. The high-voltage direct-current relay with the arc extinguishing capability improved according to claim 1, wherein the heel part of the leading-out end is fixedly sealed by adopting an insulating material to form a reinforced insulating structure so as to avoid secondary arcing; the insulating material is epoxy resin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710542829.8A CN107123574B (en) | 2017-07-05 | 2017-07-05 | High-voltage direct-current relay capable of improving arc extinguishing capacity |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710542829.8A CN107123574B (en) | 2017-07-05 | 2017-07-05 | High-voltage direct-current relay capable of improving arc extinguishing capacity |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107123574A CN107123574A (en) | 2017-09-01 |
| CN107123574B true CN107123574B (en) | 2020-10-16 |
Family
ID=59731090
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710542829.8A Active CN107123574B (en) | 2017-07-05 | 2017-07-05 | High-voltage direct-current relay capable of improving arc extinguishing capacity |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107123574B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109216071A (en) * | 2018-11-19 | 2019-01-15 | 尼普顿电器（昆山）有限公司 | A kind of arc-control device |
| CN115458370B (en) * | 2022-11-09 | 2023-02-03 | 浙江英洛华新能源科技有限公司 | Fixing structure of relay leading-out terminal |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007123058A (en) * | 2005-10-28 | 2007-05-17 | Nec Tokin Corp | Electrical contact switch |
| CN202423139U (en) * | 2012-02-06 | 2012-09-05 | 乐清市南峰电气有限公司 | Direct current contactor |
| CN205542619U (en) * | 2016-04-29 | 2016-08-31 | 浙江英洛华新能源科技有限公司 | High -voltage direct -current relay draws forth end |
| CN206992017U (en) * | 2017-07-05 | 2018-02-09 | 厦门宏发电力电器有限公司 | A kind of HVDC relay for improving arc extinguishing ability |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3018688A4 (en) * | 2013-07-05 | 2017-02-22 | Fuji Electric Co., Ltd. | Electromagnetic contactor |
-
2017
- 2017-07-05 CN CN201710542829.8A patent/CN107123574B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007123058A (en) * | 2005-10-28 | 2007-05-17 | Nec Tokin Corp | Electrical contact switch |
| CN202423139U (en) * | 2012-02-06 | 2012-09-05 | 乐清市南峰电气有限公司 | Direct current contactor |
| CN205542619U (en) * | 2016-04-29 | 2016-08-31 | 浙江英洛华新能源科技有限公司 | High -voltage direct -current relay draws forth end |
| CN206992017U (en) * | 2017-07-05 | 2018-02-09 | 厦门宏发电力电器有限公司 | A kind of HVDC relay for improving arc extinguishing ability |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107123574A (en) | 2017-09-01 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US11056305B2 (en) | Relay | |
| CN107123574B (en) | High-voltage direct-current relay capable of improving arc extinguishing capacity | |
| KR101860348B1 (en) | Vacuum interrupter for vacuum circuit breaker | |
| JP2012089494A (en) | Contact assembly of vacuum interrupter | |
| CN206992017U (en) | A kind of HVDC relay for improving arc extinguishing ability | |
| CN105470054A (en) | High-voltage DC vacuum relay | |
| CN105470067A (en) | Breaker provided with arc extinguishing mechanism with magnetic blowing and air-blowing functions | |
| CN208738131U (en) | A kind of vacuum arc-extinguishing chamber contact system structure | |
| WO2023036062A1 (en) | High-voltage direct current (dc) relay capable of enhancing arc extinguishing capability | |
| CN104064398A (en) | Contact of vacuum arc extinguishing chamber | |
| CN107622908B (en) | Movable double-loop contact structure and vacuum arc-extinguishing chamber | |
| CN216250541U (en) | Vacuum arc-extinguishing chamber contact structure | |
| CN204204778U (en) | The circuit breaker of the arc-control device of circuit breaker and circuit breaker and a kind of double break contact structure with being arranged in parallel | |
| CN103730299A (en) | Fuse for protecting solar photovoltaic power generation system | |
| CN110942950A (en) | Composite arc-extinguishing type DC contactor | |
| CN104037012A (en) | Three-position vacuum arc-extinguishing chamber having insertion type grounding position | |
| CN216435773U (en) | Contact system, circuit breaker and isolator with increase magnetic component | |
| CN202134477U (en) | Arc-extinguishing chamber used for breaker | |
| CN218730688U (en) | Arc extinguishing structure of high-voltage direct-current relay | |
| CN220526778U (en) | Arc isolation structure, contact unit and relay | |
| CN108511262A (en) | A kind of vacuum arc-extinguishing chamber contact system structure | |
| CN107359069B (en) | Switch arc-resistant contact device | |
| CN209675210U (en) | A kind of anti-Lorentz force relay | |
| KR100606421B1 (en) | Apparatus of the shield reducing the electrical field for gas insulated switchgear | |
| CN102915894A (en) | Arc blowing device of direct current circuit breaker |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |