CN111403231B - Hybrid arc extinguishing chamber - Google Patents
Hybrid arc extinguishing chamber Download PDFInfo
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- CN111403231B CN111403231B CN202010174514.4A CN202010174514A CN111403231B CN 111403231 B CN111403231 B CN 111403231B CN 202010174514 A CN202010174514 A CN 202010174514A CN 111403231 B CN111403231 B CN 111403231B
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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
- H01H33/70—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid
- H01H33/72—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid having stationary parts for directing the flow of arc-extinguishing fluid, e.g. arc-extinguishing chamber
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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
- H01H33/70—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid
- H01H33/72—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid having stationary parts for directing the flow of arc-extinguishing fluid, e.g. arc-extinguishing chamber
- H01H33/74—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid having stationary parts for directing the flow of arc-extinguishing fluid, e.g. arc-extinguishing chamber wherein the break is in gas
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- Arc-Extinguishing Devices That Are Switches (AREA)
Abstract
The application discloses a mixModular explosion chamber includes: the insulating shell is of a square frame structure consisting of a first frame, a second frame, a third frame and a fourth frame which are sequentially connected, and green insulating gas is filled in the insulating shell; the first guide rod penetrates through the first frame, extends into the insulating shell and is connected with the fixed contact; the second guide rod is fixed on the third frame through a linear seal and can move up and down along the vertical direction of the third frame; the second guide rod extends into the insulating shell and is connected with the moving contact; first air gaps are arranged between the moving contact and the second frame and between the moving contact and the fourth frame; a first air cylinder is arranged between the moving contact and the third frame; an arc burning zone is arranged between the static contact and the moving contact. By adopting the arc extinguish chamber, the vacuum arc extinguish chamber and the SF are fused6The advantages of the arc extinguish chamber are that the respective disadvantages are overcome, the performance is greatly improved, the structure is simple, and the application is wide.
Description
Technical Field
The application relates to the technical field of high-voltage switches, in particular to a hybrid arc extinguish chamber.
Background
The main function of the high-voltage switch is to turn offAnd switching on and off the normal circuit and the fault circuit to protect the power system. The core component of the high-voltage switch is a high-voltage arc-extinguishing chamber, and the high-voltage arc-extinguishing chambers which are widely applied at present are a vacuum arc-extinguishing chamber and an SF (sulfur hexafluoride) chamber respectively6An arc extinguishing chamber. The vacuum arc-extinguishing chamber is mainly applied to high-voltage switches of 3.6 kV-40.5 kV voltage class, SF6The arc extinguish chamber is mainly applied to high-voltage switches with voltage class of more than 40.5 kV.
The traditional vacuum arc extinguish chamber comprises a moving contact, a fixed contact, a guide pipe, a shielding cover, a corrugated pipe, an insulating shell and the like. Its advantages are: 1) coils are usually formed on the moving contact and the static contact by a way of opening a chute, when current passes through the contact according to a rotating direction determined by the chute, a radial magnetic field or an axial magnetic field is generated, so that electric arcs rotate on the surfaces of the moving contact and the static contact at a high speed along a radial direction or are divided into a plurality of fine diffusion-shaped small arc columns, and the electric arcs are extinguished favorably; 2) simple structure and small volume.
The vacuum arc-extinguishing chamber has the following disadvantages: 1) the breakdown voltage of the vacuum gap is not in direct proportion to the length of the gap, so that the voltage level is difficult to increase by enlarging the size, and in order to increase the voltage level, when the voltage level is applied to the voltage level of more than 40.5kV, the voltage level is often applied in a mode of connecting a plurality of vacuum arc-extinguishing chambers in series and in parallel, so that the complexity is increased, and the engineering is difficult to implement or the product size and the manufacturing cost are large, so that the competitive advantage is lost; 2) vacuum instead of insulating gas is adopted in the reactor, so that the vacuum arc extinguishing capability is very strong, but when the reactor is switched on and off, the cutoff phenomenon is very easy to generate due to the very strong arc extinguishing capability, higher cutoff overvoltage is brought, and the safety of the vacuum arc extinguishing chamber body and the electrical equipment connected with the vacuum arc extinguishing chamber body is seriously threatened; 3) in order to ensure vacuum, the corrugated pipe is arranged in the vacuum arc-extinguishing chamber, and the corrugated pipe is correspondingly subjected to mechanical deformation once each time the vacuum arc-extinguishing chamber is operated, so that the corrugated pipe is easy to damage and is also a weak part of the vacuum arc-extinguishing chamber, and the fatigue life of the metal material of the corrugated pipe determines the mechanical life of the vacuum arc-extinguishing chamber.
SF6Arc extinguishing chamber structure of self-powered SF6The arc-extinguishing chamber is composed of static arc contact, main contact, nozzle, moving arc contact, air cylinder, thermal expansion chamber and single arcA check valve, etc. The SF6 arc extinguishing chamber has the advantages that: 1) the breakdown voltage of SF6 gas is in direct proportion to the gap length, so the SF6 arc extinguish chamber is easy to improve the voltage grade by enlarging the size, and is very suitable for the voltage grade application of more than 40.5 kV; 2) the SF6 arc extinguishing capability under the same size is slightly poorer than that under vacuum, electric arcs can be stably burnt for a certain time and cannot be instantly extinguished, so that the phenomenon of interception is rarely generated, and interception overvoltage threatening the safety of a vacuum arc extinguishing chamber and electrical equipment connected with the vacuum arc extinguishing chamber is rarely brought; 3) the self-energy SF6 arc extinguish chamber widely used at present can reduce the operation power and the volume of the operating mechanism due to the self-energy principle.
The disadvantages of the SF6 arc chute are: 1) the structure is more complex than that of the vacuum arc extinguish chamber, and the size is larger than that of the vacuum arc extinguish chamber; 2) the method mainly relies on SF6 gas arc blowing, and a rotating magnetic field is not used for assisting arc extinction; 3) the SF6 gas is adopted, and the SF6 gas is a greenhouse gas, so that the greenhouse effect is 23900 times that of carbon dioxide, and the method does not meet the national policy of energy conservation and emission reduction.
Visible vacuum interrupter and SF6The arc-extinguishing chambers each have obvious advantages and disadvantages, precisely due to the vacuum arc-extinguishing chamber and the SF6The arc-extinguishing chambers have obvious advantages and disadvantages, respectively, so that the vacuum arc-extinguishing chamber and the SF6The combination of arc extinguishing chambers is a hot research in the industry. For example, in US patent US4204101A issued in 1980, a hybrid circuit breaker is proposed, which consists of a vacuum interrupter and an SF6 interrupter connected in series. US patent 6593538B2, granted in 2003, proposes a hybrid arc chute consisting of a vacuum arc chute and a gas arc chute in series. Patent CN101783262A granted in 2012 discloses a vacuum circuit breaker and SF-based circuit breaker6The optically controlled modular hybrid circuit breaker with series circuit breakers is proposed in the prior art of vacuum circuit breakers, SF6The circuit breaker and the photoelectric control base form a light-operated modular hybrid circuit breaker. It can be seen that the existing research is only to connect the vacuum arc-extinguishing chamber and the SF6The arc extinguish chambers are connected in series, so that the structure is complex, the respective defects cannot be completely overcome, and the overall performance cannot be improved after combination.
Disclosure of Invention
The present application provides a hybridA combined arc extinguish chamber, which integrates a vacuum arc extinguish chamber and SF6The advantages of the arc-extinguishing chamber and the respective disadvantages are overcome to solve the existing research that only the vacuum arc-extinguishing chamber and the SF are used6The arc extinguish chambers are connected in series, so that the structure is complex, the respective defects cannot be completely overcome, and the integral performance cannot be improved after combination.
In a first aspect, an embodiment of the present application provides a hybrid arc chute, including: the device comprises an insulating shell, a first guide rod, a static contact, a second guide rod, a direct-acting seal and a moving contact.
The insulating shell is of a square frame shape and consists of a first frame, a second frame, a third frame and a fourth frame which are sequentially connected; the insulating shell is filled with green insulating gas;
a first guide rod is arranged on the first frame, penetrates through the first frame, extends into the insulating shell and is connected with a fixed contact;
a second guide rod is arranged on the third frame, the second guide rod is fixed on the third frame through direct-acting sealing, and the second guide rod can move up and down along the vertical direction of the third frame;
the second guide rod penetrates through the third frame, extends into the insulating shell and is connected with the moving contact;
first air gaps are arranged between the moving contact and the second frame and between the moving contact and the fourth frame; a first air cylinder is arranged between the moving contact and the third frame;
and an arc burning area is arranged between the fixed contact and the movable contact.
With reference to the first aspect, in a first implementation manner, a first nozzle is axially arranged at the top of one end, deep into the insulating housing, of the second guide rod, a first air passage is radially arranged inside the second guide rod, and the first air passage is communicated with the first nozzle; the first air passage is communicated with the first air pressing cylinder.
With reference to the first aspect, in a second implementation manner, the first guide rod is fixed on the first frame through a linear dynamic seal, and the first guide rod can move up and down along a vertical direction of the first frame;
when the first guide rod is fixed on the first frame through the direct-acting seal, second air gaps are arranged between the fixed contact and the first frame and between the fixed contact and the fourth frame, and second air cylinders are arranged between the fixed contact and the first frame.
With reference to the second implementation manner of the first aspect, in a third implementation manner, a second nozzle is axially arranged at the top of one end, deep into the insulating housing, of the first guide rod, a second air passage is radially arranged inside the first guide rod, and the second air passage is communicated with the second nozzle; the second air passage is communicated with the second air cylinder.
With reference to the first or third implementation manner of the first aspect, in a fourth implementation manner, the gap between the movable contact and the second frame and the gap between the movable contact and the fourth frame are 0.
With reference to the first aspect, in a first implementation manner, the fixed contact and the movable contact are both provided with an inclined groove to form a coil.
With reference to the first aspect, in a first implementation manner, the green insulating gas is one or more of the following: n is a radical of2Dry air, CO2、O2、C4F7N、C5F10O、CF3I。
With reference to the first aspect, in a first implementation manner, an umbrella skirt is disposed on the insulating housing.
In a second aspect, an embodiment of the present application provides a high-voltage switch, including the hybrid arc-extinguishing chamber described in any one of the implementations of the first aspect.
The hybrid arc chute disclosed in the present application has at least the following advantages:
1. deeply fusing a vacuum arc extinguish chamber and SF6The arc extinguishing principle of the arc extinguishing chamber is made into an integrated structure. In one aspect, SF is used6The basic principle of the arc extinguish chamber realizes arc blowing and is self-energized SF6The structure of the arc extinguish chamber is simplified, the complexity and the size of the arc extinguish chamber are greatly reduced, and the size of the arc extinguish chamber is reducedThe volume of the operating mechanism is small. On the other hand, the basic principle of the vacuum arc extinguish chamber is considered, the flat plate structure of the moving contact and the static contact of the vacuum arc extinguish chamber is adopted, the coil is reserved, so that the electric arc rotates on the surfaces of the moving contact and the static contact at a high speed along the radial direction or is divided into a plurality of fine diffusion-shaped small arc columns, and the electric arc is extinguished favorably.
2. The interior of the arc chute is filled with an insulating gas, rather than being vacuum as in a vacuum arc chute. First, since the breakdown voltage of most insulating gases is proportional to the gap length, the vacuum interrupter can be scaled up by increasing its size, is very suitable for voltage class applications above 40.5kV, and has great advantages in complexity and size. Secondly, since there is no need to maintain vacuum, there is no need to provide a bellows with very limited life span for maintaining vacuum as in the conventional vacuum circuit breaker, thereby improving the mechanical life span of the arc extinguishing chamber. Thirdly, when the insulating gas is non-SF6Gases, e.g. N2Dry air, CO2、O2、C4F7N、C5F10O、CF3I and mixtures thereof, have the advantage of environmental protection.
In general, the hybrid arc chute disclosed herein combines a vacuum arc chute and an SF6The hybrid arc extinguish chamber has the advantages of large breaking capacity, reliable insulating performance, environmental protection and the like, and is particularly suitable for occasions of high voltage class, large breaking current, capacitive load switching, inductive load switching and the like.
Drawings
In order to more clearly explain the technical solution of the present application, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious to those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic structural diagram of embodiment 1 of the present application;
FIG. 2 is a schematic view of the structure of the present application in example 2, when a small current is turned off;
fig. 3 is a schematic structural view when a large current is turned off in embodiment 2 of the present application;
figure 4 is a schematic structural diagram of embodiment 3 of the application,
fig. 5 is a schematic structural diagram of embodiment 4 of the present application.
Wherein, 1-insulating shell, 11-first frame, 12-second frame, 13-third frame, 14-fourth frame, 15-umbrella skirt; 2-a first guide rod, 21-a second air gap, 22-a second air cylinder, 23-a second nozzle and 24-a second air channel; 3, static contact; 4-second guide rod, 41-first air gap, 42-first air cylinder, 43-first nozzle, 44-first air channel; 5-direct-acting sealing; 6-moving contact; 7-arc burning zone.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present application more comprehensible, the present application is described in further detail with reference to the accompanying drawings and the detailed description.
The application provides a hybrid arc extinguish chamber, which integrates a vacuum arc extinguish chamber and SF6The advantages of the arc-extinguishing chamber and the respective disadvantages are overcome to solve the existing research that only the vacuum arc-extinguishing chamber and the SF are used6The arc extinguish chambers are connected in series, so that the structure is complex, the respective defects cannot be completely overcome, and the integral performance cannot be improved after combination.
Example 1:
referring to fig. 1, there is shown a hybrid arc chute comprising: the device comprises an insulating shell 1, a first guide rod 2, a static contact 3, a second guide rod 4, a direct-acting seal 5 and a moving contact 6.
The insulation shell 1 is of a square frame shape, and the insulation shell 1 is composed of a first frame 11, a second frame 12, a third frame 13 and a fourth frame 14 which are connected in sequence; the insulating shell 1 is a sealing structure, and green insulating gas is filled in the insulating shell 1.
Optionally, the green insulating gas inside the insulating housing 1 is one or more of the following: n is a radical of2Dry air, CO2、O2、C4F7N、C5F10O、CF3I。
The gas is environment-friendly gas, does not pollute the environment and is beneficial to popularization.
In addition, the outside of the insulating housing 1 is provided with a shed 15, and the shed 15 can be an integral molding part with the insulating housing 1 or a separate element and is installed on the insulating housing 1.
The first frame 11 is provided with a first guide rod 2, and the first guide rod 2 penetrates through the first frame 11, extends into the insulating shell 1 and is connected with a static contact 3.
The first guide rod 2 is fixed on the first frame 11, the first frame 11 is tightly attached to the first guide rod 2, a static contact 3 is fixedly arranged at one end inside the insulating shell 1 of the first guide rod 2, the static contact 3 can adopt the existing static contact 3 structure, and the application is not limited specifically.
And a second guide rod 4 is arranged on the third frame 13, the second guide rod 4 is fixed on the third frame 13 through a linear motion seal 5, and the second guide rod 4 can move up and down along the vertical direction of the third frame 13.
The second guide rod 4 penetrates through the third frame 13, extends into the insulating shell 1 and is connected with the movable contact 6.
In this embodiment, a second guide rod 4 capable of moving up and down is disposed at an opposite position of the first guide rod 2, the second guide rod 4 is fixed on the third frame 13 through a direct-acting seal 5, so that the second guide rod 4 can move up and down along a vertical direction of the third frame 13, a moving contact 6 is fixedly disposed at one end of the second guide rod 4 inside the insulating housing 1, and the moving contact 6 can be an existing moving contact 6 matched with the static contact 3, which is not specifically limited in this application.
A first air gap 41 is arranged between the movable contact 6 and the second frame 12 and between the movable contact 6 and the fourth frame 14; a first air cylinder 42 is arranged between the movable contact 6 and the third frame 13.
An arc burning zone 7 is arranged between the static contact 3 and the movable contact 6.
A space, namely an arcing zone 7, is reserved between the static contact 3 and the movable contact 6.
In addition, the fixed contact 3 and the movable contact 6 are both provided with chutes to form coils, and the coils enable the electric arc to rotate at high speed along the radial direction on the surfaces of the movable contact 6 and the fixed contact 3 or to be divided into a plurality of fine diffusion-shaped small arc columns, so that the rapid rotation and diffusion effects of the electric arc on the electric arc are facilitated, the arc extinguishing purpose is realized, and the overall arc extinguishing performance of the arc extinguishing chamber is enhanced.
When the hybrid arc-extinguishing chamber disclosed by the embodiment is adopted, the principle of switching on and off small current and large current is consistent, and the condition of switching on and off small current is taken as an example: under the condition of small on-off current, the second guide rod 4 drives the movable contact 6 to move towards the direction close to the third frame 13, so that the space in the first air cylinder 42 is reduced, gas in the first air cylinder 42 is compressed, and the gas pressure in the first air cylinder 42 at the moment is greater than the gas pressure in the arc burning zone 7, so that the gas in the first air cylinder 42 reversely blows the edge of the arc burning zone 7 (arrow direction in the figure) through the first air gap 41, and the gas in the center of the arc burning zone 7 is diffused outwards under the driving of reverse blowing, thereby being beneficial to arc extinguishing.
The hybrid arc extinguish chamber in the embodiment has the advantages of smaller current capable of being switched on and off, simple structure and better applicability to frequent operation occasions.
Example 2:
referring to fig. 2 and fig. 3, embodiment 2 is added with the following technical features on the basis of embodiment 1: a first nozzle 43 is axially arranged at the top of one end of the second guide rod 4, which penetrates into the insulating shell 1, a first air passage 44 is radially arranged in the second guide rod 4, and the first air passage 44 is communicated with the first nozzle 43; the first air passage 44 communicates with the first air cylinder 42.
When the hybrid arc-extinguishing chamber in the embodiment 2 is adopted, the switching-on and switching-off principle is as follows: referring to fig. 2, under the condition of small current, the second guide rod 4 drives the movable contact 6 to move towards the direction close to the third frame 13, so as to compress the gas in the first air cylinder 42, so that the space in the first air cylinder 42 is reduced, and because the gas pressure in the first air cylinder 42 is greater than the gas pressure in the arc burning zone 7 at the moment, the gas in the first air cylinder 42 is mainly sprayed to the arc burning zone 7 through the first nozzle 43 after passing through the first air passage 44, and the arc is blown (arrow direction in the figure), and in addition, the arc extinguishing purpose is realized by combining the rapid rotation and diffusion effect of the coil on the arc.
Referring to fig. 3, under the condition of high current, the first guide rod 2 drives the movable contact 6 to move toward the direction close to the third frame 13, at this time, because of the heating effect of the high current on the central gas of the arc zone 7, the gas pressure in the central gas of the arc zone 7 is greater than the gas pressure in the first puffer cylinder 42, at this time, the gas in the arc zone 7 enters the first puffer cylinder 42 through the first nozzle 43 and the first air passage 44, on one hand, the high-temperature gas leaves the arc zone 7 to facilitate arc extinguishing, on the other hand, the gas entering the first puffer cylinder 42 reversely blows the edge of the arc zone 7 through the first air gap 41, under the driving of the reverse blowing, the central gas in the arc zone 7 diffuses outwards and is also beneficial to arc extinguishing, in addition, the purpose of arc extinguishing is realized in combination with the rapid rotation and diffusion effect of the coil on the electric arc.
The hybrid arc extinguish chamber in the embodiment has the advantages of large breaking capacity, wide voltage application range and good performance.
Example 3:
referring to fig. 4, in embodiment 3, the following technical features are added on the basis of embodiment 2: the first guide rod 2 is fixed on the first frame 11 through a linear motion seal 5, and the first guide rod 2 can move up and down along the vertical direction of the first frame 11;
when the first guide rod 2 is fixed on the first frame 11 through the direct-acting seal 5, second air gaps 21 are respectively arranged between the static contact 3 and the first frame 11 and between the static contact 3 and the fourth frame 14, and a second air cylinder 22 is arranged between the static contact 3 and the first frame 11.
A second nozzle 23 is axially arranged at the top of one end of the first guide rod 2, which penetrates into the insulating shell 1, a second air passage 24 is radially arranged in the first guide rod 2, and the second air passage 24 is communicated with the second nozzle 23; the second air passage 24 communicates with the second air cylinder 22.
The present embodiment is a strengthened version of the embodiment 2, that is, the embodiment 2 is a single-acting version (that is, only the movable contact 6 can move), and the embodiment 3 is a double-acting version (both the movable contact 6 and the fixed contact 3 can move), so the breaking principle of the present embodiment is similar to that of the embodiment 2, and specifically, reference may be made to the arc extinguishing principle disclosed in the embodiment 2, and details are not described here.
The hybrid arc extinguish chamber disclosed by the embodiment can realize more effective arc extinguishing, has higher breaking speed, larger current which can be broken and better applicability to occasions such as higher voltage levels.
Example 4:
referring to fig. 5, this embodiment is an improvement of embodiment 2, that is, in this embodiment, no air gap is provided between the movable contact 6 and the second frame 12, or between the movable contact 6 and the fourth frame 14, that is, two sides of the movable contact 6 are disposed in close contact with the inner wall of the insulating housing 1, and the movable contact 6 can slide along the inner wall of the insulating housing 1.
The principle of the hybrid explosion chamber disclosed in this embodiment that opens the undercurrent and opens the heavy current is unanimous, is: drive moving contact 6 by second guide arm 4 and move to the direction that is close to third frame 13, make first air cylinder 42's space diminish, thereby compress the gas in the first air cylinder 42, because gas pressure is greater than arc burning zone 7 gas pressure in the first air cylinder 42 this moment, event first air cylinder 42 is gaseous to spout by first spout 43 behind through first air flue 44 to arc burning zone 7, blow the arc to electric arc, in addition, combine the coil to the quick rotation and the diffusion effect of electric arc, realize the purpose of arc extinguishing.
The hybrid arc extinguish chamber in the embodiment has the advantages that the current capable of being switched on and off is small, the structure is simpler and more reliable, and the applicability to the occasions with small current is better.
The application also discloses a high-voltage switch, high-voltage switch includes the hybrid explosion chamber in above-mentioned arbitrary one kind of embodiment, can select suitable explosion chamber by oneself according to different occasions.
The present application has been described in detail with reference to specific embodiments and illustrative examples, but the description is not intended to limit the application. Those skilled in the art will appreciate that various equivalent substitutions, modifications or improvements may be made to the presently disclosed embodiments and implementations thereof without departing from the spirit and scope of the present disclosure, and these fall within the scope of the present disclosure. The protection scope of this application is subject to the appended claims.
Claims (6)
1. A hybrid arc chute, comprising: the device comprises an insulating shell (1), a first guide rod (2), a static contact (3), a second guide rod (4), a linear motion seal (5) and a moving contact (6);
the insulating shell (1) is of a square frame shape, and the insulating shell (1) is composed of a first frame (11), a second frame (12), a third frame (13) and a fourth frame (14) which are sequentially connected; green insulating gas is filled in the insulating shell (1);
a first guide rod (2) is arranged on the first frame (11), and the first guide rod (2) penetrates through the first frame (11) and extends into the insulating shell (1) and is connected with a fixed contact (3);
the first guide rod (2) is fixed on the first frame (11) through a linear motion seal (5), and the first guide rod (2) can move up and down along the vertical direction of the first frame (11);
when the first guide rod (2) is fixed on the first frame (11) through the direct-acting seal (5), second air gaps (21) are respectively arranged between the static contact (3) and the second frame (12) and between the static contact (3) and the fourth frame (14), and second air cylinders (22) are arranged between the static contact (3) and the first frame (11);
a second nozzle (23) is axially arranged at the top of one end, deep into the insulating shell (1), of the first guide rod (2), a second air passage (24) is radially arranged in the first guide rod (2), and the second air passage (24) is communicated with the second nozzle (23); the second air channel (24) is communicated with the second air cylinder (22);
a second guide rod (4) is arranged on the third frame (13), the second guide rod (4) is fixed on the third frame (13) through a linear motion seal (5), and the second guide rod (4) can move up and down along the vertical direction of the third frame (13);
the second guide rod (4) penetrates through the third frame (13) and extends into the insulating shell (1) and is connected with the moving contact (6);
first air gaps (41) are respectively arranged between the moving contact (6) and the second frame (12) and between the moving contact (6) and the fourth frame (14); a first air cylinder (42) is arranged between the moving contact (6) and the third frame (13);
the fixed contact (3) and the moving contact (6) are both provided with chutes to form coils; an arc burning zone (7) is arranged between the static contact (3) and the moving contact (6).
2. The hybrid arc extinguishing chamber according to claim 1, characterized in that a first nozzle (43) is axially arranged on the top of one end of the second guide rod (4) extending into the insulating shell (1), a first air duct (44) is radially arranged inside the second guide rod (4), and the first air duct (44) is communicated with the first nozzle (43); the first air passage (44) is communicated with the first air cylinder (42).
3. Hybrid arc chute according to claim 2, characterized in that the gap between said movable contact (6) and said second frame (12) and between said movable contact (6) and said fourth frame (14) is 0.
4. The hybrid arc chute of claim 1, wherein the green insulating gas is one or more of: n is a radical of2Dry air, CO2、O2、C4F7N、C5F10O、CF3I。
5. Hybrid arc chute according to claim 1, characterized in that a shed (15) is provided on said insulating casing (1).
6. A high-voltage switch, characterized in that it comprises a hybrid arc chute according to any of claims 1-5.
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| CN202010174514.4A CN111403231B (en) | 2020-03-13 | 2020-03-13 | Hybrid arc extinguishing chamber |
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| CN202010174514.4A CN111403231B (en) | 2020-03-13 | 2020-03-13 | Hybrid arc extinguishing chamber |
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| CN111403231B true CN111403231B (en) | 2022-04-08 |
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| CN116403844B (en) * | 2023-02-23 | 2023-12-12 | 徐州中铁电气有限公司 | Relay for protecting power system circuit |
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| CN101599391A (en) * | 2009-07-13 | 2009-12-09 | 西安森源开关技术研究所有限公司 | The novel single-fracture single-cylinder self energy high pressure sulfur hexafluoride breaker arc extinguish chamber |
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| DE19613569A1 (en) * | 1996-04-04 | 1997-10-09 | Asea Brown Boveri | Circuit breaker |
| KR100351300B1 (en) * | 2000-09-27 | 2002-09-05 | 엘지산전 주식회사 | Hybrid arc extinguishing apparatus for circuit breaker |
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| CN101599391A (en) * | 2009-07-13 | 2009-12-09 | 西安森源开关技术研究所有限公司 | The novel single-fracture single-cylinder self energy high pressure sulfur hexafluoride breaker arc extinguish chamber |
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