CN117116703A - Vacuum arc-extinguishing chamber module of environment-friendly gas cabinet - Google Patents
Vacuum arc-extinguishing chamber module of environment-friendly gas cabinet Download PDFInfo
- Publication number
- CN117116703A CN117116703A CN202311359332.4A CN202311359332A CN117116703A CN 117116703 A CN117116703 A CN 117116703A CN 202311359332 A CN202311359332 A CN 202311359332A CN 117116703 A CN117116703 A CN 117116703A
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- China
- Prior art keywords
- arc
- extinguishing chamber
- vacuum
- gas cabinet
- guide
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Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B13/00—Arrangement of switchgear in which switches are enclosed in, or structurally associated with, a casing, e.g. cubicle
- H02B13/02—Arrangement of switchgear in which switches are enclosed in, or structurally associated with, a casing, e.g. cubicle with metal casing
- H02B13/035—Gas-insulated switchgear
- H02B13/0354—Gas-insulated switchgear comprising a vacuum switch
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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
- H01H33/66261—Specific screen details, e.g. mounting, materials, multiple screens or specific electrical field considerations
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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
- H01H33/666—Operating arrangements
-
- 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
- H01H33/66261—Specific screen details, e.g. mounting, materials, multiple screens or specific electrical field considerations
- H01H2033/66284—Details relating to the electrical field properties of screens in vacuum switches
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- High-Tension Arc-Extinguishing Switches Without Spraying Means (AREA)
Abstract
The invention discloses a vacuum arc-extinguishing chamber module of an environment-friendly gas cabinet, which comprises a closing transmission assembly and a vacuum arc-extinguishing chamber, wherein a main shaft of a circuit breaker is in transmission connection with a moving contact of the vacuum arc-extinguishing chamber through the closing transmission assembly, the vacuum arc-extinguishing chamber module further comprises a conductive arc-preventing support, the arc-preventing support is provided with a connecting shaft sleeve unit, a plurality of supporting frames fixedly connected with the connecting shaft sleeve unit and arc-preventing ball seats connected with the supporting frames, the main shaft of the circuit breaker is assembled on the connecting shaft sleeve unit to form a pivoted arrangement, the supporting frames and the arc-preventing ball seats are integrally connected, the supporting frames are arranged on the periphery of the closing transmission assembly, the arc-preventing ball seats surround the moving end of the vacuum arc-extinguishing chamber and are fixed on a shell of the vacuum arc-extinguishing chamber to form a conductive protective shell, so that potential differences among different points on the arc-preventing support can be effectively reduced, and balanced electric field distribution can be formed to effectively inhibit flashover between adjacent transmission connection mechanisms of a ring, and further effectively reduce electric breakdown probability.
Description
Technical Field
The invention relates to the technical field of electrical equipment, in particular to a vacuum arc-extinguishing chamber module of an environment-friendly gas cabinet.
Background
The environment-friendly gas cabinet adopts inert gas to replace sulfur hexafluoride gas to meet the requirement of environmental protection, and is mainly used on high-voltage circuits of transformer substations and power grid facilities.
The environment-friendly gas cabinet comprises three-phase circuit breakers, the vacuum arc-extinguishing chamber modules of the three-phase circuit breakers are all connected with the same circuit breaker main shaft, the circuit breakers of the environment-friendly gas cabinet are responsible for protecting internal circuits, safely opening and closing functions and the like, the circuit breaker main shaft is driven to rotate back and forth through the driving mechanism of the environment-friendly gas cabinet, and then the vacuum arc-extinguishing chamber modules of the circuit breakers are driven to realize opening and closing of the circuits.
The surface of the electric conductor of the vacuum arc-extinguishing chamber module of the environment-friendly gas cabinet is provided with high inter-phase potential, flashover is easy to generate between two points with larger potential difference, but the environment-friendly gas cabinet is required to be further miniaturized at present, so that the distance between the electric conductors of the vacuum arc-extinguishing chamber module of the environment-friendly gas cabinet is required to be further reduced, and the risk probability that the environment-friendly gas cabinet is broken down by electricity is very high.
Disclosure of Invention
Therefore, the invention aims to solve the problems and provide the vacuum arc-extinguishing chamber module of the environment-friendly gas cabinet, which can effectively inhibit the generation of flashover so as to effectively reduce the probability of electric breakdown of the environment-friendly gas cabinet.
In order to achieve the above purpose, the technical scheme provided by the invention is as follows:
the vacuum arc-extinguishing chamber module of the environment-friendly gas cabinet comprises a closing transmission assembly and a vacuum arc-extinguishing chamber, wherein a breaker main shaft of the environment-friendly gas cabinet is in transmission connection with a moving contact of the vacuum arc-extinguishing chamber through the closing transmission assembly, and the vacuum arc-extinguishing chamber module further comprises a conductive arc-preventing bracket; the arc-proof support is provided with a connecting shaft sleeve unit, a plurality of supporting frames fixedly connected with the connecting shaft sleeve unit and arc-proof ball seats connected with the supporting frames, the main shaft of the circuit breaker is assembled on the connecting shaft sleeve unit to form a pin joint arrangement, and the supporting frames are integrally connected with the arc-proof ball seats; the support frames are arranged on the periphery of the closing transmission assembly, and the arc-preventing ball seats encircle the movable end of the vacuum arc-extinguishing chamber and are fixed on the shell of the vacuum arc-extinguishing chamber.
Further, the arc-preventing ball seat is a metal ball seat, the metal ball seat is provided with a fixing groove, and the outer periphery of the shell of the vacuum arc-extinguishing chamber is inserted into the fixing groove and abutted to the groove wall in the fixing groove.
Furthermore, the edges and the corners of the support frame are provided with rounded corners; the outer side surface of the support frame is a smooth surface.
Further, the connecting shaft sleeve unit comprises a connecting shaft sleeve and two connecting frames, the upper ends of the connecting frames are fixedly connected with the outer peripheral surface of the connecting shaft sleeve, and the lower ends of the connecting frames are fixedly connected with the supporting frame.
Further, the setting quantity of support frame is two, and two support frames set up respectively closing a floodgate drive assembly's both sides, every support frame all is provided with two arc-proof ball seats.
Further, two arc-proof ball seats connected to the same support frame are integrally connected through a connecting part.
Further, the support frame is provided with a mounting window which is arranged in a penetrating mode, and the soft connection of the vacuum arc extinguishing chamber penetrates through the mounting window and is fixed on the support frame.
Further, the closing transmission assembly comprises a cam, a guide rod and a spring; the cam is fixedly assembled on the main shaft of the circuit breaker; one end of the guide rod is movably assembled on the cam, and the other end of the guide rod is inserted into the vacuum arc-extinguishing chamber in a lifting manner and fixedly connected with the moving contact so as to drive the moving contact to be close to or far away from the fixed contact of the vacuum arc-extinguishing chamber; the spring and the soft connection of the vacuum arc-extinguishing chamber are arranged up and down and are respectively movably sleeved on the guide rod, and when the switch is closed, the spring applies elastic force to the lower end of the guide rod towards the fixed contact.
Further, the closing transmission assembly further comprises a guide sleeve, a bolt and two guide rollers, the cam is provided with two swing arms arranged at intervals and a mounting groove positioned between the two swing arms, the swing arms are provided with arc-shaped guide grooves, and the guide rollers can be assembled in the guide grooves in a rolling way; the guide sleeve is slidably assembled at the upper end of the guide rod, and the upper end of the guide sleeve is inserted into the mounting groove and fixedly connected with the two guide rollers through the bolt; the spring is fitted between the guide sleeve and the flexible connection.
Further, the plurality of support frames and the arc-preventing ball seat are integrally connected to form a hemispherical shell with a containing cavity, and the hemispherical shell is provided with an upper opening penetrating through the containing cavity and a yielding window matched with the soft connection of the vacuum arc extinguishing chamber; the switching-on transmission assembly sequentially penetrates through the upper opening and the accommodating cavity, and the soft connection penetrates through the abdication window and is fixed on the hemispherical shell.
The technical scheme provided by the invention has the following beneficial effects:
the switch-on transmission assembly comprises a switch-on transmission assembly, a plurality of conductive supporting frames, a plurality of conductive arc-proof ball seats, a conductor protective shell structure, a plurality of arc-proof support frames, a plurality of arc-proof ball seats, a plurality of arc-proof support frames, a plurality of arc-proof motor and a plurality of arc-proof motor, wherein the plurality of conductive arc-proof ball seats are arranged on the periphery of the switch-on transmission assembly, the plurality of conductive arc-proof ball seats encircle the movable end of the vacuum arc-extinguishing chamber so as to form the conductor protective shell structure, the electric potential differences between different points on the arc-proof support frames are effectively reduced, and then more balanced electric field distribution is formed, so that flashover formation between adjacent vacuum arc-extinguishing chamber modules in the environment-friendly gas cabinet is effectively inhibited, and the probability of electric breakdown of the environment-friendly gas cabinet is effectively reduced.
Drawings
Fig. 1 is a partial sectional view of a vacuum interrupter module of an environment-friendly gas cabinet connected to a main shaft of a circuit breaker according to a first embodiment;
FIG. 2 is an enlarged schematic view of region A of FIG. 1;
fig. 3 is a schematic structural diagram of a vacuum interrupter module of an environment-friendly gas cabinet connected to a main shaft of a circuit breaker according to the first embodiment;
fig. 4 is an external view showing a vacuum interrupter module of an environment-friendly gas cabinet connected to a main shaft of a circuit breaker according to the first embodiment.
Detailed Description
For further illustration of the various embodiments, the invention is provided with the accompanying drawings. The accompanying drawings, which are incorporated in and constitute a part of this disclosure, illustrate embodiments and together with the description, serve to explain the principles of the embodiments. With reference to these matters, one of ordinary skill in the art will understand other possible embodiments and advantages of the present invention. The components in the figures are not drawn to scale and like reference numerals are generally used to designate like components.
The invention will now be further described with reference to the drawings and detailed description.
Example 1
Referring to fig. 1 to 4, an embodiment provides a vacuum interrupter module (hereinafter collectively referred to as vacuum interrupter module) of an environment-friendly gas cabinet, including a closing transmission assembly 4 and a vacuum interrupter 1, a breaker main shaft 3 of the environment-friendly gas cabinet and a moving contact (not shown) of the vacuum interrupter 1 are in transmission connection through the closing transmission assembly 4, and further include a conductive arc-preventing support 2, the arc-preventing support 2 includes a connecting shaft sleeve unit 21, two support frames 23 fixedly connected with the connecting shaft sleeve unit 21, and arc-preventing ball seats 22 connected with the support frames 23, the breaker main shaft 3 is assembled on the connecting shaft sleeve unit 21 to form a pivot connection arrangement, the support frames 23 and the arc-preventing ball seats 22 are integrally connected, the two support frames 23 are arranged at the periphery of the closing transmission assembly 4, and the 4 arc-preventing ball seats encircle the moving end of the vacuum interrupter 1 and are fixed on a housing of the vacuum interrupter 1.
In this embodiment, be provided with 3 vacuum interrupter modules side by side in the environmental protection gas cabinet in order to correspond the three-phase electricity, 3 circuit breaker main shaft 3 of environmental protection gas cabinet are all connected to vacuum interrupter module side by side to the vacuum interrupter module of environmental protection gas cabinet, and be insulating setting between vacuum interrupter module and the circuit breaker main shaft 3 of environmental protection gas cabinet, the live bus (not shown) of environmental protection gas cabinet is connected to the one end of the flexible coupling 11 of vacuum interrupter 1, the movable end of vacuum interrupter 1 is connected to the other end electricity of flexible coupling 11, specifically, support frame 23 has the mounting window (not marked) that runs through the setting, and the flexible coupling 11 of vacuum interrupter 1 passes the mounting window is fixed on the support frame 23.
The driving mechanism of the environment-friendly gas cabinet drives the main shaft 3 of the circuit breaker to rotate in the forward and reverse directions within a certain rotation angle range, and then drives the closing transmission assembly 4 to make corresponding movement so as to drive the moving contact to axially approach or separate from a fixed contact (not shown) of the vacuum arc-extinguishing chamber 1, so that the circuit is opened or closed.
The two conductive supporting frames 23 are arranged on the periphery of the closing transmission assembly 4, and the two conductive arc-preventing ball seats 22 encircle the movable end of the vacuum arc extinguishing chamber 1 to form a conductor protective shell structure, so that the potential difference between different points on the arc-preventing support 2 is effectively reduced, and more balanced electric field distribution is formed, so that flashover formation between adjacent vacuum arc extinguishing chamber modules in the environment-friendly gas cabinet is effectively inhibited, and the probability of electric breakdown of the environment-friendly gas cabinet is effectively reduced.
In another preferred embodiment, the connection sleeve unit 21 includes a connection sleeve 211 and two connection frames 212, the upper ends of the connection frames 212 are fixedly connected to the outer circumferential surface of the connection sleeve 211, and the lower ends of the connection frames 212 are fixedly connected to the support frame 23.
The connecting shaft sleeve 211 of the circuit breaker main shaft 3 and the arc-preventing support 2 is in a pin joint relationship so as to realize free circumferential rotation of the circuit breaker main shaft 3 in the connecting shaft sleeve 211, so that structural interference between the arc-preventing support 2 and the circuit breaker main shaft 3 is avoided, namely, the arc-preventing support 2 is fixed between the circuit breaker main shaft 3 and the vacuum arc-extinguishing chamber 1 and is always in static support, and the circuit breaker main shaft 3 and the connecting shaft sleeve 211 are insulated from each other.
In another preferred embodiment, the arc-preventing ball seat 22 is a metal ball seat, the metal ball seat is provided with a fixing groove 221, and the outer periphery of the shell of the vacuum interrupter 1 is inserted into the fixing groove 221 and abuts against the groove wall in the fixing groove 221.
Specifically, two support frames 23 are respectively disposed on two sides of the closing transmission assembly 4, each support frame 23 is provided with two arc-preventing ball seats 22, and the two arc-preventing ball seats 22 connected to the same support frame 23 are integrally connected through a connecting portion (not shown).
In this embodiment, two metal ball seats on the same support frame 23 are a set of, 4 metal ball seats divide into 2 groups, and 2 groups of metal ball seats are symmetrically distributed on the periphery of the movable end of the vacuum arc-extinguishing chamber 1, and two metal ball seats of the same group and the connecting portion are an integrated integral structure, so as to effectively reduce the area of the edge, the corner angle or the sharp protrusion (i.e. the tip of the follow-up) of the arc-preventing support frame 2, and realize the consistent electric potential of the outer side surfaces of the two arc-preventing ball seats 22 and the connecting portion.
The fixed groove 221 of the metal ball seat is in a barb shape and is provided with an upper hook 2211 and a lower hook 2212, the upper hook 2211 of the metal ball seat is abutted and clamped on the shell of the vacuum arc-extinguishing chamber 1, the lower hook 2212 of the metal ball seat is inserted into the groove of the shell of the vacuum arc-extinguishing chamber 1, and therefore the metal ball seat is clamped and fixed on the vacuum arc-extinguishing chamber 1.
Meanwhile, the connecting part is provided with a mounting through hole, and is inserted into the shell of the vacuum arc-extinguishing chamber 1 after penetrating through the mounting through hole of the connecting part through a screw, so that the connecting part is fastened on the vacuum arc-extinguishing chamber 1, and further fixing of the metal ball seat is realized.
The arc-preventing support 2 has conductivity, so that the electric potential of the outer side surface of the arc-preventing support 2 is the same value, an balanced electric field is formed, and further the outer side surface of the arc-preventing support 2 is effectively restrained from arcing, so that the probability of electric breakdown of the environment-friendly gas cabinet is reduced.
Further preferably, the edges and corners of the supporting frame 23 are rounded, and the outer side surface of the supporting frame 23 is a smooth surface.
When the charge amount of the conductor is a certain amount, the tip effect is more remarkable as the tip of the conductor is more pointed, namely, the tip is more pointed, the curvature is more high, the surface charge density is more high, the formed electric field is stronger, and the electric field intensity distribution of the electric field formed on the surface of the conductor is more uneven.
On the same conductor, the part with large curvature is the tip, so the edge and the edge angle of the conductor are both tip relative to the smooth surface, and the tip effect is easy to form.
Even if the charged body has no tip, the conductor adjacent thereto has a tip, a tip effect is formed therebetween because of electrostatic induction, opposite charges are induced at the tip of the conductor adjacent thereto, and discharge with the charged body is liable to occur.
The outer side surface of the arc-proof ball seat 22 is processed into a smooth spherical surface so as to ensure that the tip area of the outer side surface of the arc-proof ball seat 22 is in a qualified specified range, and the edges and the corners of the connecting support frame 23 are provided with rounded corners so as to reduce the tip effect of the support frame 23, reduce the probability of inter-phase short circuit, effectively inhibit the surface of the arc-proof support frame 2 from forming flashover and reduce the probability of the environment-friendly gas cabinet from being electrically broken down.
In another preferred embodiment, the closing transmission assembly 4 includes a cam 41, a guide rod 42 and a spring 43, where the cam 41 is fixedly assembled on the main shaft 3 of the circuit breaker, one end of the guide rod 42 is movably assembled on the cam 41, the other end of the guide rod is inserted into the vacuum arc-extinguishing chamber 1 in a lifting manner and is fixedly connected with the moving contact, so as to drive the moving contact to approach or depart from the fixed contact of the vacuum arc-extinguishing chamber 1, the spring 43 and the flexible connection 11 are disposed up and down and are respectively movably sleeved on the guide rod 42, and during closing, the spring 43 applies an elastic force to the lower end of the guide rod 42 towards the fixed contact.
Specifically, the closing transmission assembly 4 further includes a guide sleeve 44, a latch 45 and two guide rollers 46, the cam 41 has two swing arms (not shown) disposed at intervals and a mounting groove (not shown) between the two swing arms, the swing arms have an arc-shaped guide groove 411, the guide rollers 46 are assembled in the guide groove 411 in a rolling manner, the guide sleeve 44 is assembled at the upper end of the guide rod 42 in a sliding manner, the upper end of the guide sleeve 44 is inserted into the mounting groove, and the guide sleeve 44 is fixedly connected with the two guide rollers 46 through the latch 45, so that the guide sleeve 44 is fixed with the two guide rollers 46, and further, the transmission connection between the guide sleeve 44 and the cam 41 is realized, and the spring 43 is assembled between the guide sleeve 44 and the flexible connection 11.
In this embodiment, the arc-shaped guide slot 411 is a C-shaped slot, and two ends of the C-shaped slot are bent upwards, the guide rod 42 is provided with a guide chute (not shown) matched with the guide sleeve 44, the guide chute of the guide rod 42 is a slot hole with four closed sides and extends along the direction of the movement track of the guide rod 42, the outer circumferential surface of the guide sleeve 44 is provided with a guide slide block (not shown), and the guide slide block of the guide sleeve 44 is inserted into the guide chute of the guide rod 42 so as to realize sliding connection between the guide rod 42 and the guide sleeve 44.
When the brake is in the brake-off position, the guide sliding block of the guide sleeve 44 is upwards abutted against the guide sliding groove of the guide rod 42 to be close to the inner groove wall of the cam 41, so that the guide sleeve 44 drives the guide rod 42 to drive the moving contact to be far away from the fixed contact under the action of external force of the cam 41, and brake-off is further realized.
In the process from the opening position to the closing position, the main shaft 3 of the circuit breaker rotates in the first direction, the swing arm of the cam 41 is driven to swing in the first direction, and then the two guide rollers 46 are driven to roll downwards in the guide slot 411, the guide sleeve 44 is synchronously driven to slide downwards in the guide chute of the guide rod 42, and because the guide sleeve 44 and the guide rod 42 are not abutted against each other, that is, the guide sleeve 44 applies upward supporting force to the guide rod 42 to disappear, therefore, under the action of the self-closing force of the vacuum arc extinguishing chamber 1 (that is, the external force formed by the internal and external air pressure difference of the vacuum arc extinguishing chamber 1), the guide rod 42 starts to move downwards along with the guide rod and moves downwards for a certain distance, the guide sleeve 44 starts to abut against the spring 43 under the driving of the guide roller 46, at this moment, the moving contact and the static contact abut together, then the guide sleeve 44 continues to move downwards and compress the spring 43 until the guide roller 46 rolls to the center point of the guide slot 411, at this moment, the lowest point of the upper and lower positions of the guide roller 46, so that the spring 43 is elastically deformed and forms a certain elastic force, so that the contact is applied to the contact, and the contact is formed between the moving contact and the static contact is further formed, and the contact is elastically connected.
In the process from the closing position to the opening position, the main shaft 3 of the circuit breaker rotates in a second direction opposite to the first direction, the swing arm of the cam 41 is driven to swing in the second direction, the two guide rollers 46 are driven to leave the center point of the guide slot 411 and roll upwards, the guide sleeve 44 is synchronously driven to slide upwards in the guide chute of the guide rod 42, the elastic deformation quantity of the spring 43 starts to be reduced until the elastic force disappears, so that the elastic contact between the moving contact and the fixed contact is released, the guide sleeve 44 is driven to slide upwards until the guide sliding block of the guide sleeve 44 contacts the guide chute of the guide rod 42 to be close to the inner slot wall of the cam 41, so that the guide sleeve 44 applies upward pulling force to the guide rod 42, and at the moment, the guide sleeve 44 needs to overcome the self-closing force of the vacuum arc extinguishing chamber 1 to apply upward pulling force to the guide rod 42 and the moving contact until the opening position.
Further preferably, the upper groove wall of the guide slot 411 has a protruding portion 4111 protruding downward, the protruding portion 4111 abuts against the wheel surface of the guide roller 46 to correspond to the closing position, and specifically, the position of the protruding portion 4111 of the upper groove wall of the guide slot 411 is the center point of the guide slot 411, so as to correspond to the closing position of the environmental protection gas cabinet.
Example two
The second embodiment provides a vacuum arc-extinguishing chamber module of an environment-friendly gas cabinet, and the second embodiment has the same structure as the first embodiment, and the difference is that: two support frames and 4 arc-proof ball seats form the hemisphere casing that has the holding cavity through an organic whole connection, the hemisphere casing has and link up hold the last opening of cavity and cooperation vacuum interrupter's flexible coupling's window of stepping down, closing transmission assembly passes in proper order the last opening with hold the cavity, the flexible coupling passes the window of stepping down is fixed on the hemisphere casing.
Specifically, the shell surface of hemisphere casing is smooth surface, the flexible end of closing a floodgate drive assembly with the moving contact forms fixed connection.
The movable end of the vacuum arc-extinguishing chamber and the closing transmission assembly are enclosed by the conductive hemispherical shell, so that the tip effect area caused by the tips, edges and corners of the arc-preventing support is effectively reduced, better balanced electric potential distribution is formed, and further a better balanced electric field is formed, so that flashover formation between adjacent vacuum arc-extinguishing chamber modules in the environment-friendly gas cabinet is better effectively inhibited, and further the probability of electric breakdown of the environment-friendly gas cabinet is effectively reduced.
While the invention has been particularly shown and described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (10)
1. The utility model provides a vacuum interrupter module of environmental protection gas cabinet, includes combined floodgate drive assembly and vacuum interrupter, the circuit breaker main shaft of environmental protection gas cabinet with vacuum interrupter's moving contact passes through the transmission of combined floodgate drive assembly realizes that transmission connection, its characterized in that: the device also comprises a conductive arc-proof bracket;
the arc-proof support is provided with a connecting shaft sleeve unit, a plurality of supporting frames fixedly connected with the connecting shaft sleeve unit and arc-proof ball seats connected with the supporting frames, the main shaft of the circuit breaker is assembled on the connecting shaft sleeve unit to form a pin joint arrangement, and the supporting frames are integrally connected with the arc-proof ball seats; the support frames are arranged on the periphery of the closing transmission assembly, and the arc-preventing ball seats encircle the movable end of the vacuum arc-extinguishing chamber and are fixed on the shell of the vacuum arc-extinguishing chamber.
2. The vacuum interrupter module of an environmentally friendly gas cabinet of claim 1, wherein: the anti-arcing ball seat is a metal ball seat, the metal ball seat is provided with a fixing groove, and the outer periphery of the shell of the vacuum arc-extinguishing chamber is inserted into the fixing groove and is abutted to the groove wall in the fixing groove.
3. The vacuum interrupter module of an environmentally friendly gas cabinet of claim 1, wherein: the edges and edges of the support frames are provided with rounded corners; the outer side surface of the support frame is a smooth surface.
4. The vacuum interrupter module of an environmentally friendly gas cabinet of claim 1, wherein: the connecting shaft sleeve unit comprises a connecting shaft sleeve and two connecting frames, wherein the upper ends of the connecting frames are fixedly connected with the outer peripheral surface of the connecting shaft sleeve, and the lower ends of the connecting frames are fixedly connected with the supporting frame.
5. The vacuum interrupter module of claim 4, wherein: the setting quantity of support frame is two, and two support frames set up respectively closing a floodgate drive assembly's both sides, every support frame all is provided with two arc-proof ball seats.
6. The vacuum interrupter module of claim 4, wherein: two arc-proof ball seats connected to the same support frame are integrally connected through a connecting part.
7. The vacuum interrupter module of an environmentally friendly gas cabinet of claim 1, wherein: the support frame has the installation window that runs through the setting, the soft coupling of vacuum interrupter passes the installation window and fix on the support frame.
8. The vacuum interrupter module of an environmentally friendly gas cabinet of claim 1, wherein: the closing transmission assembly comprises a cam, a guide rod and a spring; the cam is fixedly assembled on the main shaft of the circuit breaker; one end of the guide rod is movably assembled on the cam, and the other end of the guide rod is inserted into the vacuum arc-extinguishing chamber in a lifting manner and fixedly connected with the moving contact so as to drive the moving contact to be close to or far away from the fixed contact of the vacuum arc-extinguishing chamber; the spring and the soft connection of the vacuum arc-extinguishing chamber are arranged up and down and are respectively movably sleeved on the guide rod, and when the switch is closed, the spring applies elastic force to the lower end of the guide rod towards the fixed contact.
9. The vacuum interrupter module of claim 8, wherein: the switching-on transmission assembly further comprises a guide sleeve, a bolt and two guide rollers, the cam is provided with two swing arms arranged at intervals and a mounting groove positioned between the two swing arms, the swing arms are provided with arc-shaped guide grooves, and the guide rollers can be assembled in the guide grooves in a rolling way; the guide sleeve is slidably assembled at the upper end of the guide rod, and the upper end of the guide sleeve is inserted into the mounting groove and fixedly connected with the two guide rollers through the bolt; the spring is fitted between the guide sleeve and the flexible connection.
10. The vacuum interrupter module of an environmentally friendly gas cabinet of claim 1, wherein: the plurality of support frames and the arc-preventing ball seat are integrally connected to form a hemispherical shell with a containing cavity, and the hemispherical shell is provided with an upper opening penetrating through the containing cavity and a yielding window matched with the soft connection of the vacuum arc extinguishing chamber; the switching-on transmission assembly sequentially penetrates through the upper opening and the accommodating cavity, and the soft connection penetrates through the abdication window and is fixed on the hemispherical shell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311359332.4A CN117116703A (en) | 2023-10-20 | 2023-10-20 | Vacuum arc-extinguishing chamber module of environment-friendly gas cabinet |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311359332.4A CN117116703A (en) | 2023-10-20 | 2023-10-20 | Vacuum arc-extinguishing chamber module of environment-friendly gas cabinet |
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| CN117116703A true CN117116703A (en) | 2023-11-24 |
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| CN202311359332.4A Pending CN117116703A (en) | 2023-10-20 | 2023-10-20 | Vacuum arc-extinguishing chamber module of environment-friendly gas cabinet |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118197856A (en) * | 2024-05-20 | 2024-06-14 | 厦门顾德益电气股份有限公司 | Circuit breaker structure and environment-friendly gas cabinet |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN204424719U (en) * | 2015-03-19 | 2015-06-24 | 厦门顾德益电器有限公司 | A kind of solid insulation cabinet |
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| CN118197856A (en) * | 2024-05-20 | 2024-06-14 | 厦门顾德益电气股份有限公司 | Circuit breaker structure and environment-friendly gas cabinet |
| CN118197856B (en) * | 2024-05-20 | 2024-10-22 | 厦门顾德益电气股份有限公司 | Circuit breaker structure and environment-friendly gas cabinet |
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