CN111276362A - AC high-voltage vacuum arc-extinguishing chamber - Google Patents
AC high-voltage vacuum arc-extinguishing chamber Download PDFInfo
- Publication number
- CN111276362A CN111276362A CN201811474635.XA CN201811474635A CN111276362A CN 111276362 A CN111276362 A CN 111276362A CN 201811474635 A CN201811474635 A CN 201811474635A CN 111276362 A CN111276362 A CN 111276362A
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- China
- Prior art keywords
- shell
- static
- plate
- contact
- rod
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- 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
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- 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
- H01H33/662—Housings or protective screens
Landscapes
- High-Tension Arc-Extinguishing Switches Without Spraying Means (AREA)
Abstract
The invention provides an alternating-current high-voltage vacuum arc-extinguishing chamber which comprises a ceramic shell and a sealing shell, wherein the sealing shell wraps the periphery of the ceramic shell, the top of the ceramic shell penetrates through the head end of a moving rod, a moving contact is fixedly arranged at the bottom end of the moving rod, a guide sleeve is sleeved on the periphery of the moving rod, one side of the guide sleeve is fixedly connected with the sealing shell, a corrugated pipe is arranged below the guide sleeve, one end of the corrugated pipe is fixedly arranged on the inner wall of the ceramic shell, a static contact is attached to the lower end face of the moving contact, a static rod is fixedly arranged on the lower end face of the static contact, and a static cover plate is fixedly. The small compartment formed by the flow resisting plate can be used for carrying the evaporation and the liquid drop splashing of the electrode metal generated when the moving contact is separated from the static contact, so that the evaporation and the liquid drop splashing of the electrode metal are prevented from being directly contacted with the shielding cover, the shielding cover is excessively corroded, the service life of the arc extinguish chamber is shortened, the alternating-current high-voltage vacuum arc extinguish chamber is suitable for production and use, and the development prospect is good.
Description
Technical Field
The invention relates to the technical field of electrical devices, in particular to a vacuum arc extinguish chamber.
Background
The vacuum arc extinguish chamber is an electrical apparatus for power supply and distribution, is suitable for high-voltage power supply and distribution line switch to divide the power-off current to use, and the current technical consideration is not comprehensive, has following drawback:
1. the periphery of the arc extinguish chamber is not provided with other protection components, so that the arc extinguish chamber exposed outside for a long time is corroded, the outer wall of the arc extinguish chamber becomes more fragile, and the safety of the arc extinguish chamber is poor.
2. The periphery of the arc extinguish chamber is free of other stable parts, so that the arc extinguish chamber is easily disturbed by the outside, the arc extinguish chamber is frequently shaken, and the service life of the arc extinguish chamber is shortened.
3. The shield cover of the arc extinguish chamber is only provided with one layer of inner wall, when the moving contact is separated from the static contact, vacuum electric arc is generated and emitted to the periphery and breaks down in gaps, so that the shield cover is easier to damage after electrode metal is evaporated and liquid drops are splashed to contact the shield cover, and the service life of the shield cover is shortened.
Disclosure of Invention
The invention aims to solve the technical problems of poor safety and short service life of the existing vacuum arc extinguish chamber, and provides an alternating current high-voltage vacuum arc extinguish chamber.
In order to achieve the purpose, the invention provides the following technical scheme:
an alternating current high-voltage vacuum arc extinguish chamber comprises a porcelain shell and a sealing shell, wherein the sealing shell wraps the periphery of the porcelain shell, the top of the porcelain shell penetrates through the head end of a moving rod, the bottom end of the moving rod is fixedly provided with a moving contact, the periphery of the moving rod is sleeved with a guide sleeve, one side of the guide sleeve is fixedly connected with the sealing shell, a corrugated pipe is arranged below the guide sleeve, one end of the corrugated pipe is fixedly arranged on the inner wall of the porcelain shell, the lower end face of the moving contact is attached with a static contact, the lower end face of the static contact is fixedly provided with a static rod, the lower end face of the static rod is fixedly connected with a static cover plate, the moving contact wraps the periphery of the static contact with a shielding cover, a flow resisting plate is fixedly connected inside the shielding cover, side fixing plates are fixedly connected with the two sides of the sealing shell, a fixing block is clamped on the outer sides of the side fixing plates,
the outer side of the tail end of the fixing block is provided with a screw hole, and the fixing block is matched with the side fixing plate.
As a further scheme of the invention: the surface of the side fixing plate is communicated with screw holes, the head end of the side fixing plate is matched with the fixing block, and the tail end of the fixing block is provided with the screw holes.
As a further scheme of the invention: the porcelain shell is a ceramic shell, the sealing shell is a rubber shell, and the sealing shell is matched with the porcelain shell.
As a further scheme of the invention: the flow baffle is upwards protruding along the periphery of quiet pole, and the protruding department of flow baffle is "crotch type".
As a further scheme of the invention: the flow baffle is an oxygen-free copper plate, and rectangular through holes are uniformly distributed in the flow baffle and penetrate through to the bottom.
The invention has the following beneficial effects:
(1) the AC high-voltage vacuum arc extinguish chamber is provided with a sealing shell, and a porcelain shell can be completely wrapped by the sealing shell
Wrap up in, avoid the material in the air with porcelain shell wearing and tearing attenuation, insulating nature worsens, causes the potential safety hazard easily, improves the security of porcelain shell.
(2) This kind of exchange high pressure vacuum interrupter is provided with the fixed block, can fix sealed shell and external object through the fixed block for the installation of porcelain shell is more stable, avoids porcelain shell internals and porcelain shell not hard up with the junction of external wiring, the life of extension fixture.
(3) The alternating-current high-voltage vacuum arc extinguish chamber is provided with the flow resisting plate, and the evaporation and the liquid drop splashing of the electrode metal generated when the moving contact is separated from the static contact can be carried by one small compartment formed by the flow resisting plate, so that the evaporation and the liquid drop splashing of the electrode metal are prevented from being directly contacted with the shielding cover, the shielding cover is excessively corroded, and the service life of the arc extinguish chamber is shortened.
In conclusion, the alternating-current high-voltage vacuum arc-extinguishing chamber has wide practicability, solves the problems of poor safety and short service life of the existing vacuum arc-extinguishing chamber in the background technology, and has high popularization value.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention.
Fig. 2 is a schematic view of the internal structure of the present invention.
Fig. 3 is a schematic sectional view of the top of the shield according to the present invention.
In FIGS. 1-3: 1-moving rod, 101-guide sleeve, 102-corrugated pipe, 103-moving contact, 2-porcelain shell, 201-side fixing plate, 202-sealing shell, 203-fixing block, 3-static cover plate, 301-static rod, 302-static contact, 4-shielding cover and 401-current baffle.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The moving rod 1, the moving contact 103, the porcelain shell 2, the side fixing plate 201, the sealing shell 202, the fixing block 203, the static contact 302, the shielding cover 4 and the flow resisting plate 401 used in the invention can be purchased from the market or customized by a private person.
Referring to fig. 1 to 3, in an embodiment of the present invention, an ac high-voltage vacuum arc-extinguishing chamber includes a ceramic shell 2 and a sealing shell 202, the sealing shell 202 is wrapped around the ceramic shell 2, the ceramic shell 2 can be wrapped completely by the sealing shell 202, so as to prevent substances in the air from wearing and thinning the ceramic shell 2, the insulation property of the ceramic shell is deteriorated, and a potential safety hazard is easily caused, and the safety of the ceramic shell 2 is improved, the top of the ceramic shell 2 penetrates through the head end of a moving rod 1, a moving contact 103 is fixed to the bottom end of the moving rod 1, a guide sleeve 101 is sleeved around the outer periphery of the moving rod 1, one side of the guide sleeve 101 is fixedly connected to the sealing shell 202, a corrugated tube 102 is disposed below the guide sleeve 101, one end of the corrugated tube 102 is fixedly disposed on the inner wall of the ceramic shell 2, a static contact 302 is attached to the lower end surface, the lower end face of the static rod 301 is fixedly connected with a static cover plate 3, the periphery of the moving contact 103 and the static contact 302 is wrapped with a shielding cover 4, the interior of the shielding cover 4 is fixedly connected with a flow resisting plate 401, a small compartment formed by the flow resisting plate 401 can be used for bearing evaporation and droplet splashing of electrode metal generated when the moving contact 103 is separated from the static contact 302, the evaporation and droplet splashing of the electrode metal are prevented from directly contacting with the shielding cover 4, the shielding cover 4 is over-corroded to shorten the service life of the arc extinguish chamber, the two sides of the sealing shell 202 are fixedly connected with side fixing plates 201, the outer sides of the side fixing plates 201 are clamped with fixing blocks 203, the sealing shell 202 can be fixed with an external object through the fixing blocks 203, the installation of the porcelain shell 2 is more stable, the connection between the internal parts of the porcelain shell 2 and an external connection wire is prevented from loosening, one side of fixed block 203 runs through have with the supporting screw of side fixed plate 201, and the screw has been seted up in the tail end outside of fixed block 203, and fixed block 203 sets up with the side fixed plate 201 is supporting.
In the present invention: screw holes are penetrated through the surface of the side fixing plate 201; the ceramic shell 2 is a ceramic shell, the sealing shell 202 is a rubber shell, and the sealing shell 202 is matched with the ceramic shell 2; the flow resisting plate 401 protrudes upwards along the outer circumference of the static rod 301, and the protruding part of the flow resisting plate 401 is in a hook shape; the flow baffle 401 is an oxygen-free copper plate, and rectangular through holes are uniformly distributed in the flow baffle 401 and penetrate through to the bottom.
When the alternating-current high-voltage vacuum arc-extinguishing chamber is used, firstly, the sealing shell 202 is wrapped on the periphery of the ceramic shell 2, then the ceramic shell 2 is connected with a circuit, then the screw hole of the fixing block 203 is aligned to the screw hole of the side fixing plate 201, then the screw is screwed in for fixing, the other end of the fixing block 203 is fixed at other positions on the periphery of the ceramic shell 2 through the bolt, when a power supply needs to be cut off, the driving mechanism is operated to pull the moving rod 1, the moving rod 1 is pulled towards the outer side of the ceramic shell 2, the moving contact 103 is separated from the static contact 302, when the moving contact 103 is separated from the static contact 302, the current is contracted to the point where the moving contact 103 is just separated from the static contact 302, the resistance between electrodes is increased violently, the temperature is increased rapidly, vacuum electric arc is generated, the vacuum arc is emitted towards the periphery and is broken down through gaps, evaporation metal and droplet splashing are caused, the reduction of the insulating strength of the porcelain shell 2 can be avoided, the opening distance between the moving contact 103 and the static contact 302 is gradually increased, so that when the power frequency current is close to zero, the plasma of the electric arc is quickly diffused to the periphery, after the electric arc current passes zero, the medium in the gap of the contact is quickly changed into an insulator from a conductor, and then the current is cut off, thereby completing the working process of the alternating-current high-voltage vacuum arc-extinguishing chamber.
The above is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, it is possible to make several variations and modifications without departing from the concept of the present invention, and these should be considered as the protection scope of the present invention, which will not affect the effect of the implementation of the present invention and the utility of the patent.
Claims (1)
1. An alternating current high-voltage vacuum arc-extinguishing chamber comprises a porcelain shell (2) and a sealing shell (202); the method is characterized in that: a sealing shell (202) is wrapped on the periphery of the porcelain shell (2); the top of the porcelain shell (2) penetrates through the head end of the moving rod (1), the bottom end of the moving rod (1) is fixedly provided with a moving contact (103), the periphery of the moving rod (1) is sleeved with a guide sleeve (101), one side of the guide sleeve (101) is fixedly connected with a sealing shell (202), a corrugated pipe (102) is arranged below the guide sleeve (101), one end of the corrugated pipe (102) is fixedly arranged on the inner wall of the porcelain shell (2), the lower end face of the moving contact (103) is attached with a static contact (302), the lower end face of the static contact (302) is fixedly provided with a static rod (301), the lower end face of the static rod (301) is fixedly connected with a static cover plate (3), the peripheries of the moving contact (103) and the static contact (302) are wrapped with a shielding cover (4), the inner part of the shielding cover (4) is fixedly connected with a flow resisting plate (401), and two sides of the sealing shell (202) are fixedly connected with, a fixing block (203) is clamped on the outer side of the side fixing plate (201), a screw hole matched with the screw hole of the side fixing plate (201) penetrates through one side of the fixing block (203), the outer side of the tail end of the fixing block (203) is provided with the screw hole, and the fixing block (203) is matched with the side fixing plate (201); screw holes are penetrated through the surface of the side fixing plate (201); the ceramic shell (2) is a ceramic shell, the sealing shell (202) is a rubber shell, and the sealing shell (202) is matched with the ceramic shell (2); the flow resisting plate (401) protrudes upwards along the outer periphery of the static rod (301), and the protruding part of the flow resisting plate (401) is in a bent hook shape; the flow resisting plate (401) is an oxygen-free copper plate, and rectangular through holes are uniformly distributed in the flow resisting plate (401) and penetrate through to the bottom.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811474635.XA CN111276362A (en) | 2018-12-04 | 2018-12-04 | AC high-voltage vacuum arc-extinguishing chamber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811474635.XA CN111276362A (en) | 2018-12-04 | 2018-12-04 | AC high-voltage vacuum arc-extinguishing chamber |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111276362A true CN111276362A (en) | 2020-06-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811474635.XA Pending CN111276362A (en) | 2018-12-04 | 2018-12-04 | AC high-voltage vacuum arc-extinguishing chamber |
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| Country | Link |
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| CN (1) | CN111276362A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112038166A (en) * | 2020-09-17 | 2020-12-04 | 安徽普众机电有限公司 | High-voltage insulating ceramic vacuum switch tube |
-
2018
- 2018-12-04 CN CN201811474635.XA patent/CN111276362A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112038166A (en) * | 2020-09-17 | 2020-12-04 | 安徽普众机电有限公司 | High-voltage insulating ceramic vacuum switch tube |
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| Date | Code | Title | Description |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20200612 |
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| WD01 | Invention patent application deemed withdrawn after publication |