CN115527798A - Double-fracture vacuum arc extinguish chamber - Google Patents
Double-fracture vacuum arc extinguish chamber Download PDFInfo
- Publication number
- CN115527798A CN115527798A CN202211392585.7A CN202211392585A CN115527798A CN 115527798 A CN115527798 A CN 115527798A CN 202211392585 A CN202211392585 A CN 202211392585A CN 115527798 A CN115527798 A CN 115527798A
- Authority
- CN
- China
- Prior art keywords
- static
- conducting rod
- metal heat
- conducting
- movable
- 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.)
- Pending
Links
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
- H01H33/60—Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
- H01H33/66—Vacuum switches
- H01H33/664—Contacts; Arc-extinguishing means, e.g. arcing rings
-
- 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
- H01H9/52—Cooling of switch parts
Landscapes
- High-Tension Arc-Extinguishing Switches Without Spraying Means (AREA)
Abstract
The invention relates to a double-break vacuum arc extinguish chamber.A buffer corrugated pipe is connected with an insulating shell, the buffer corrugated pipe is connected with a metal heat conducting plate, and the other ends of the two insulating shells are respectively fixedly connected with two cover plates; the two movable conducting rods are respectively connected with the two cover plates in a sliding manner; the two first corrugated pipes are respectively connected with the two movable conducting rods in a sliding manner, one ends of the two first corrugated pipes are respectively fixedly connected with the two cover plates, and the two movable contacts are respectively fixedly connected with the two movable conducting rods; one end of the first static conducting rod and one end of the second static conducting rod are fixedly connected with two end planes of the metal heat conducting plate respectively, the other ends of the first static conducting rod and the second static conducting rod are fixedly connected with the first static contact and the second static contact respectively, the shielding covers cover the outer sides of the moving contact and the static contact, and the two shielding covers are fixed in the insulating shell. The double-fracture vacuum arc extinguish chamber has high mechanical strength and good heat dissipation effect, and belongs to the technical field of arc extinguish chambers.
Description
Technical Field
The invention relates to the technical field of arc extinguish chambers, in particular to a double-break vacuum arc extinguish chamber.
Background
The vacuum arc-extinguishing chamber is a core component of a medium-high voltage power switch, and has the main function of quickly extinguishing electric arcs after a medium-high voltage circuit is cut off by virtue of excellent vacuum insulating property, so that a main circuit is successfully cut off. Because the breakdown voltage of the vacuum gap and the gap length have saturation phenomena, the multi-fracture vacuum arc-extinguishing chamber formed by connecting a plurality of single-fracture vacuum arc-extinguishing chambers in series in a certain mode is one of the technical routes applied to the ultrahigh voltage field. The structure of the existing double-break vacuum arc extinguish chamber is as follows: two moving contacts are arranged at the upper part and the lower part to form two vacuum short gaps with a static contact at the middle position, wherein the middle contact is fixed on the insulating shell. Because it is difficult to guarantee that two moving contacts contact the middle static contact simultaneously during closing, therefore, the middle static contact can receive an impact during closing, easily causes the junction of middle contact and insulating housing not hard up, and mechanical strength is difficult to guarantee.
On the other hand, the vacuum arc-extinguishing chamber can generate a large amount of heat when the current is cut off, and if the heat is not dissipated in time, the cut-off performance of the vacuum arc-extinguishing chamber is influenced, and the service life of the arc-extinguishing chamber is further reduced. For the double-break vacuum arc-extinguishing chamber with compact design, the heat dissipation effect should be considered more, and the breaking capacity of the double-break vacuum arc-extinguishing chamber is improved.
Disclosure of Invention
Aiming at the technical problems in the prior art, the invention aims to: the utility model provides a double break vacuum interrupter, solves current vacuum interrupter mechanical strength and is difficult to guarantee with the poor problem of radiating effect.
In order to achieve the purpose, the invention adopts the following technical scheme:
a double-break vacuum arc-extinguishing chamber comprises a first corrugated pipe, insulating shells, a movable conducting rod, a movable contact, a shielding cover, buffer corrugated pipes, a first static conducting rod, a metal heat-conducting plate, a second static conducting rod, a first static contact, a second static contact and a cover plate, wherein the number of the shielding cover, the buffer corrugated pipes, the movable contact, the movable conducting rod, the first corrugated pipe, the insulating shells and the cover plate is two, one ends of the two buffer corrugated pipes are fixedly connected with one ends of the two insulating shells respectively, the other ends of the two buffer corrugated pipes are fixed with two end planes of the metal heat-conducting plate respectively, and the other ends of the two insulating shells are fixedly connected with the two cover plates respectively; the two movable conducting rods respectively penetrate through the two cover plates and are respectively connected with the two cover plates in a sliding manner; the two first corrugated pipes are respectively connected with the two movable conducting rods in a sliding manner, one ends of the two first corrugated pipes are respectively fixedly connected with the two cover plates, and the two movable contacts are respectively fixedly connected with the two movable conducting rods; one end of each of the first static conducting rod and the second static conducting rod is fixedly connected with two end planes of the metal heat conducting plate respectively, the other end of each of the first static conducting rod and the second static conducting rod is fixedly connected with the first static contact and the second static contact respectively, one shielding cover covers the outer side of one moving contact and the outer side of the first static contact, the other shielding cover covers the outer side of the other moving contact and the outer side of the second static contact, and the two shielding covers are fixed in the insulating shell.
Preferably, the double-break vacuum arc extinguish chamber further comprises a heat dissipation ring, and the heat dissipation ring is fixed on the outer edge of the metal heat conduction plate.
Preferably, the metal heat-conducting plate is disc-shaped.
Preferably, the metal heat conducting plate, the first static conducting rod and the second static conducting rod are of an integrally formed structure, the first static conducting rod and the second static conducting rod are of the same structure, the thickness of the metal heat conducting plate is a, the diameter of the first static conducting rod is b, and a =0.5b.
Preferably, the metal heat conducting plate is made of copper.
Preferably, the radius of the metal heat-conducting plate is larger than that of the buffer corrugated pipe, and the edge of the metal heat-conducting plate extends towards the outside of the double-break vacuum arc-extinguishing chamber.
Preferably, the wall thickness of the damping bellows is greater than the wall thickness of the insulating housing.
Preferably, the damper bellows and the insulating housing are coaxially arranged.
Preferably, the buffer bellows is made of stainless steel.
Preferably, the heat dissipating ring is made of copper.
In general, the present invention has the following advantages:
according to the double-break vacuum arc extinguish chamber, the metal heat conducting plate is connected with the first static conducting rod and the second static conducting rod together, one part of the metal heat conducting plate is exposed outside the arc extinguish chamber, and the radiating ring is connected to the tail end of the metal heat conducting plate, so that the radiating area is further increased, and therefore heat generated in the breaking process can be radiated through the metal heat conducting plate and the radiating ring. In addition, the metal heat conducting plate is connected to the insulating shell through the buffering corrugated pipe which plays a role in buffering, the buffering measure can effectively reduce the influence of impact force on the connection part during closing, and the mechanical strength of the whole double-fracture vacuum arc-extinguishing chamber is improved.
Drawings
FIG. 1 is a cross-sectional view of a dual break vacuum interrupter;
in the figure: 1. a first bellows; 2. a movable conductive rod; 3. a moving contact; 4. a shield case; 5. a buffer bellows; 6. a first static conductive rod; 7. an insulating housing; 8. a metal heat conducting plate; 9. a second static conductive rod; 10. a first fixed contact; 11. a second stationary contact; 12. a cover plate; 13. and a heat dissipation ring.
Detailed Description
The present invention will be described in further detail with reference to specific embodiments.
As shown in fig. 1, a dual-break vacuum interrupter includes a first bellows, an insulating housing, a movable conducting rod, a movable contact, a shielding cover, a buffer bellows, a first static conducting rod, a metal heat conducting plate, a second static conducting rod, a first static contact, a second static contact, and a cover plate, where the number of the shielding cover, the buffer bellows, the movable contact, the movable conducting rod, the first bellows, the insulating housing, and the cover plate is two, one end of each of the two buffer bellows is fixedly connected to one end of each of the two insulating housings, the other end of each of the two buffer bellows is fixed to two end planes of the metal heat conducting plate, and the other end of each of the two insulating housings is fixedly connected to the two cover plates; the two movable conducting rods respectively penetrate through the two cover plates and are respectively connected with the two cover plates in a sliding manner; the two first corrugated pipes are respectively connected with the two movable conducting rods in a sliding manner, one ends of the two first corrugated pipes are respectively fixedly connected with the two cover plates, and the two movable contacts are respectively fixedly connected with the two movable conducting rods; one end of each of the first static conducting rod and the second static conducting rod is fixedly connected with two end planes of the metal heat conducting plate, the other end of each of the first static conducting rod and the second static conducting rod is fixedly connected with the first static contact and the second static contact, one shielding cover covers the outer side of one moving contact and the outer side of the first static contact, the other shielding cover covers the outer side of the other moving contact and the outer side of the second static contact, and the two shielding covers are fixed in the insulating shell. The heat generated in the process of opening and closing the vacuum arc-extinguishing chamber can be conducted to the heat dissipation ring through the metal heat conduction plate and then dissipated. In addition, the metal heat conducting plate is connected to the insulating shell through the buffering corrugated pipe which plays a role in buffering, the buffering measure can effectively reduce the influence of impact force on the connection part during closing, and the mechanical strength of the vacuum arc-extinguishing chamber is improved.
In this embodiment, the two cover plates are symmetrical along the metal heat conducting plate, the two insulating shells are symmetrical along the metal heat conducting plate, the two buffer corrugated pipes are symmetrical along the metal heat conducting plate, the two movable conducting rods are symmetrical along the metal heat conducting plate, the two movable contacts are symmetrical along the metal heat conducting plate, the two shielding covers are symmetrical along the metal heat conducting plate, the first static conducting rod and the second static conducting rod are symmetrical along the metal heat conducting plate, the first static contact and the second static contact are symmetrical along the metal heat conducting plate, and the two first corrugated pipes are symmetrical along the metal heat conducting plate. The first corrugated pipe, the moving contact and the shielding cover are all located in the insulating shell, the first fixed contact and one moving conducting rod are arranged oppositely, and the second fixed contact and the other moving conducting rod are arranged oppositely.
The double-fracture vacuum arc extinguish chamber further comprises a heat dissipation ring, and the heat dissipation ring is fixed on the outer edge of the metal heat conduction plate.
The metal heat conducting plate is disc-shaped.
The metal heat conduction plate, the first static conducting rod and the second static conducting rod are of an integrally formed structure, the first static conducting rod and the second static conducting rod are identical in structure, the thickness of the metal heat conduction plate is a, the diameter of the first static conducting rod is b, and a =0.5b. The first static conductive rod and the second static conductive rod are respectively positioned in the centers of two end planes of the metal heat-conducting plate.
The metal heat conducting plate is made of copper.
The radius of the metal heat-conducting plate is larger than that of the buffer corrugated pipe, and the edge of the metal heat-conducting plate extends to the outside of the double-break vacuum arc-extinguishing chamber.
The wall thickness of the buffer corrugated pipe is larger than that of the insulating shell.
The buffer corrugated pipe and the insulating shell are coaxially arranged.
The buffer corrugated pipe is made of stainless steel.
The heat dissipation ring is made of copper. The cross section of the heat dissipation ring is circular, and the projection of the heat dissipation ring in the vertical direction is a circular ring.
The first corrugated pipe, the insulating housing, the movable conducting rod, the movable contact, the shielding cover, the first static conducting rod, the second static conducting rod, the first static contact, the second static contact and the cover plate of the vacuum interrupter are all parts of an existing vacuum interrupter.
The insulating housing of the present embodiment is a cylindrical structure.
Compare with the vacuum interrupter structure that prior art adopted, its simple structure of the vacuum interrupter of double-fracture that this embodiment provided can avoid when closing a floodgate the metal heat-conducting plate and the junction of insulating porcelain shell because of the too big not hard up of impact force that receives, and mechanical strength is high to have good heat-sinking capability.
The above embodiments are preferred embodiments of the present invention, but the present invention is not limited to the above embodiments, and any other changes, modifications, substitutions, combinations, and simplifications which do not depart from the spirit and principle of the present invention should be construed as equivalents thereof, and all such modifications are intended to be included in the scope of the present invention.
Claims (10)
1. The utility model provides a two break vacuum interrupter which characterized in that: the device comprises a first corrugated pipe, insulating shells, a movable conducting rod, a movable contact, a shielding cover, buffer corrugated pipes, a first static conducting rod, a metal heat-conducting plate, a second static conducting rod, a first static contact, a second static contact and a cover plate, wherein the number of the shielding cover, the buffer corrugated pipes, the movable contact, the movable conducting rod, the first corrugated pipe, the insulating shells and the cover plate is two, one ends of the two buffer corrugated pipes are fixedly connected with one ends of the two insulating shells respectively, the other ends of the two buffer corrugated pipes are fixed with two end planes of the metal heat-conducting plate respectively, and the other ends of the two insulating shells are fixedly connected with the two cover plates respectively; the two movable conducting rods respectively penetrate through the two cover plates and are respectively connected with the two cover plates in a sliding manner; the two first corrugated pipes are respectively connected with the two movable conducting rods in a sliding manner, one ends of the two first corrugated pipes are respectively fixedly connected with the two cover plates, and the two movable contacts are respectively fixedly connected with the two movable conducting rods; one end of each of the first static conducting rod and the second static conducting rod is fixedly connected with two end planes of the metal heat conducting plate respectively, the other end of each of the first static conducting rod and the second static conducting rod is fixedly connected with the first static contact and the second static contact respectively, one shielding cover covers the outer side of one moving contact and the outer side of the first static contact, the other shielding cover covers the outer side of the other moving contact and the outer side of the second static contact, and the two shielding covers are fixed in the insulating shell.
2. A double break vacuum interrupter as defined in claim 1, characterized by: the double-fracture vacuum arc extinguish chamber further comprises a heat dissipation ring, and the heat dissipation ring is fixed on the outer edge of the metal heat conduction plate.
3. A double break vacuum interrupter as defined in claim 1, characterized by: the metal heat conducting plate is disc-shaped.
4. A double break vacuum interrupter as defined in claim 1, characterized by: the metal heat conduction plate, the first static conducting rod and the second static conducting rod are of an integrally formed structure, the first static conducting rod and the second static conducting rod are identical in structure, the thickness of the metal heat conduction plate is a, the diameter of the first static conducting rod is b, and a =0.5b.
5. A double break vacuum interrupter according to claim 3, characterized in that: the metal heat conducting plate is made of copper.
6. A double break vacuum interrupter as defined in claim 5, wherein: the radius of the metal heat-conducting plate is larger than that of the buffer corrugated pipe, and the edge of the metal heat-conducting plate extends to the outside of the double-break vacuum arc-extinguishing chamber.
7. A double break vacuum interrupter according to claim 6, characterized in that: the wall thickness of the buffer corrugated pipe is larger than that of the insulating shell.
8. A double break vacuum interrupter as defined in claim 7, wherein: the buffer corrugated pipe and the insulating shell are coaxially arranged.
9. A double break vacuum interrupter as defined in claim 8, wherein: the buffer corrugated pipe is made of stainless steel.
10. A double break vacuum interrupter as defined in claim 2, characterized in that: the heat dissipation ring is made of copper.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211392585.7A CN115527798A (en) | 2022-11-08 | 2022-11-08 | Double-fracture vacuum arc extinguish chamber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211392585.7A CN115527798A (en) | 2022-11-08 | 2022-11-08 | Double-fracture vacuum arc extinguish chamber |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115527798A true CN115527798A (en) | 2022-12-27 |
Family
ID=84704894
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211392585.7A Pending CN115527798A (en) | 2022-11-08 | 2022-11-08 | Double-fracture vacuum arc extinguish chamber |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115527798A (en) |
-
2022
- 2022-11-08 CN CN202211392585.7A patent/CN115527798A/en active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CA2790731C (en) | Retainer, vacuum interrupter, and electrical switching apparatus including the same | |
| JPS58145035A (en) | Vacuum arc discharge device | |
| CN111952111B (en) | Double-fracture quick vacuum arc extinguish chamber | |
| CN115527798A (en) | Double-fracture vacuum arc extinguish chamber | |
| US3508021A (en) | Vacuum switch | |
| CN1469405A (en) | Vacuum tube for electric protective equipment such as switch or breaker | |
| US3766345A (en) | Vacuum interrupter | |
| CN211788811U (en) | Transverse magnetic electrode vacuum arc-extinguishing chamber | |
| US3612795A (en) | Shielding arrangements for vacuum-type circuit interrupters of the two-contact type | |
| CN213877938U (en) | Arc extinguishing device | |
| TW565868B (en) | Current collector and gas circuit breaker | |
| US3854068A (en) | Shield structure for vacuum arc discharge devices | |
| CN110942945A (en) | Load switch provided with high-standard grounding closing capacity isolator | |
| RU135446U1 (en) | HIGH VOLTAGE TANK SWITCH WITH VACUUM ARC TAMPER | |
| TWI795246B (en) | Vacuum arc-extinguishing chamber and vacuum circuit breaker with a triggered cathode | |
| CN114520128B (en) | Porcelain base structure of double-break vacuum arc-extinguishing chamber and double-break vacuum circuit breaker | |
| CN203277206U (en) | Outdoor vacuum circuit breaker | |
| CN216671493U (en) | Vacuum circuit breaker for electrical engineering | |
| CN113745044B (en) | Vacuum arc-extinguishing chamber contact | |
| CN215496543U (en) | Vacuum arc-extinguishing chamber with trigger cathode and vacuum circuit breaker device | |
| EP0061992B1 (en) | High-voltage gas-blast puffer type circuit-breaker | |
| CN213752514U (en) | Impact-resistant vacuum arc-extinguishing chamber | |
| CN216773130U (en) | Vacuum arc-extinguishing chamber of two-gap grading ring structure of power transmission grade | |
| CN211183105U (en) | Gas-insulated vacuum switch mechanism and gas-insulated switch cabinet | |
| RU2464663C2 (en) | CONTACT SYSTEM OF VACUUM ARC-QUENCHING CHAMBER FOR VOLTAGE OF 100 kV |
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 |