CN109411289B - Switch fracture, arc extinguish chamber, solid-sealed polar pole and circuit breaker - Google Patents

Switch fracture, arc extinguish chamber, solid-sealed polar pole and circuit breaker Download PDF

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Publication number
CN109411289B
CN109411289B CN201811062533.7A CN201811062533A CN109411289B CN 109411289 B CN109411289 B CN 109411289B CN 201811062533 A CN201811062533 A CN 201811062533A CN 109411289 B CN109411289 B CN 109411289B
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China
Prior art keywords
contact
static
cavity
movable contact
opening
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CN201811062533.7A
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Chinese (zh)
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CN109411289A (en
Inventor
门博
王卫东
段晓辉
孙珂珂
张利欣
朱继斌
熊萍萍
胡延涛
魏义涛
李久良
郭东方
贺永明
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State Grid Corp of China SGCC
Pinggao Group Co Ltd
Henan Pinggao Electric Co Ltd
Original Assignee
State Grid Corp of China SGCC
Pinggao Group Co Ltd
Henan Pinggao Electric Co Ltd
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Application filed by State Grid Corp of China SGCC, Pinggao Group Co Ltd, Henan Pinggao Electric Co Ltd filed Critical State Grid Corp of China SGCC
Priority to CN201811062533.7A priority Critical patent/CN109411289B/en
Publication of CN109411289A publication Critical patent/CN109411289A/en
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Publication of CN109411289B publication Critical patent/CN109411289B/en
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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
    • H01H33/64—Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid wherein the break is in gas
    • 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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  • Arc-Extinguishing Devices That Are Switches (AREA)

Abstract

The invention relates to a switch fracture, an arc extinguish chamber, a solid-sealed pole and a circuit breaker. The switch fracture comprises a fixed contact and a direct-acting moving contact, a through hole is formed in the fixed contact, the moving contact comprises a moving contact body located on one side of the fixed contact, a conducting rod is connected to one side, close to the fixed contact, of the moving contact body, the conducting rod penetrates through the through hole in the fixed contact and is insulated from the fixed contact, and the moving contact body can move back and forth to be close to the fixed contact to switch on and separate from the fixed contact to switch off. The arc extinguish chamber, the solid-sealed pole and the circuit breaker are applied to the switch fracture. The switch fracture adopts a reverse contact and separation mode to realize switching on and switching off of the switch fracture, the switching on and switching off direction of the switch fracture is opposite to the switching off direction of the conventional switch fracture, the original forward contact mode that a movable contact body and a static contact body are in uniform is changed, a brand-new switching on and switching off mode of the switch fracture is provided, and a new thought is provided for reducing the size of the fracture and simplifying the fracture structure.

Description

Switch fracture, arc extinguish chamber, solid-sealed polar pole and circuit breaker
Technical Field
The invention relates to the field of electrical switches, in particular to a switch fracture, an arc extinguish chamber, a solid-sealed pole and a circuit breaker.
Background
The switch is electrical equipment widely applied in the field of power transmission and distribution, the fracture structure is a core structure of the switch, and the through-current performance and the on-off performance of the switch are directly influenced by the design quality of the fracture structure.
Typical fracture structure can be seen in the chinese utility model patent that the grant bulletin number is CN 205487926U, the name is a novel explosion chamber, including moving contact and static contact, the static contact is connected with the contact seat, and the moving contact is connected with operating mechanism, and the two is arranged along same straight line interval, and the moving contact is drawn close to the static contact during combined floodgate, inserts inside the static contact, and during the separating brake, the moving contact is retreated and is left the static contact, separates with the static contact.
In terms of the switch fracture with the moving contact moving linearly, the structure is the only structure visible in the market at present, which causes great limitation in reducing fracture size, simplifying fracture structure and the like, and the design of switch fractures with different structures is urgent.
Disclosure of Invention
The invention aims to provide a novel switch fracture.
Meanwhile, the invention also aims to provide an arc extinguish chamber, a solid-sealed pole and a circuit breaker using the switch fracture.
In order to achieve the purpose, the technical scheme is that the switch fracture comprises the following steps:
scheme 1: the switch fracture comprises a fixed contact and a direct-acting moving contact, a through hole is formed in the fixed contact, the moving contact comprises a moving contact body located on one side of the fixed contact, a conducting rod is connected to one side, close to the fixed contact, of the moving contact body, the conducting rod penetrates through the through hole in the fixed contact and is insulated from the fixed contact, and the moving contact body can move back and forth to approach the fixed contact to close a switch and is separated from the fixed contact to open the switch.
Has the advantages that: in the prior art, a fracture of a direct-acting switch realizes switching-on through forward contact of a movable contact body and a static contact body, and switching-off is realized through front separation. The switch fracture adopts a reverse contact and separation mode to realize switching on and switching off of the switch fracture, the switching on and switching off direction of the switch fracture is opposite to the switching off direction of the conventional switch fracture, the original forward contact mode that a movable contact body and a static contact body are in uniform is changed, a brand-new switching on and switching off mode of the switch fracture is provided, and a new thought is provided for reducing the size of the fracture and simplifying the fracture structure.
Scheme 2: on the basis of the scheme 1, the conducting rod is in insulation fit with the static contact through an insulating ring arranged between the conducting rod and the static contact. The insulating ring is simple and convenient in arrangement mode, the conducting rod and the static contact can be in insulating fit, and the condition that the conducting rod and the static contact are in short circuit due to air insulation is avoided.
Scheme 3: on the basis of the scheme 2, the conducting rod is in guide fit with the static contact through the insulating ring. The conducting rod is in the central point that takes place the conducting rod easily and deviate from the through-hole of static contact after the repeated pull, through arranging the insulating ring that plays the guide effect between conducting rod and static contact, can guarantee that the conducting rod still keeps vertical state after the pull many times, increases the frequency of use of switch fracture.
Scheme 4: on the basis of the scheme 1, the outer diameter of the moving contact body is larger than that of the conducting rod, and the longitudinal section of the moving contact is T-shaped. The external diameter of the movable contact body is larger than the condition that the movable contact and the static contact are separated when the distance pulled by the movable contact is too large can be avoided by the conductive rod, the external diameter of the movable contact body is larger, a contact surface of the movable contact and the static contact can be formed on one side, facing the static contact, of the movable contact body, and then switching-on and switching-off of a switch fracture are achieved through contact and separation of the contact surface.
Scheme 5: on the basis of any one of the schemes 1 to 4, the fixed contact is provided with a jack or a slot which is used for being matched with the movable contact. The moving contact can contact with the static contact at pore wall or cell wall department, has increased the area of contact that the moving contact also with the static contact, and then has increased the current capacity.
Scheme 6: on the basis of the scheme 5, the contact fingers are installed in the jacks or the slots. The contact finger has better conductivity, so that the current capacity of the switch fracture can be further increased.
The arc extinguish chamber with the closed cavity inside the static contact adopts the following technical scheme:
scheme 1: the arc extinguish chamber comprises a fixed contact and a direct-acting moving contact, the fixed contact is connected with a fixed contact base, the moving contact comprises a moving contact body and a conducting rod connected with the moving contact body, the fixed contact base is provided with a cavity, a through hole is formed in the fixed contact, the through hole forms an opening of the cavity, the moving contact body is located in the cavity, a set insulation distance is reserved between the periphery of the moving contact body and the inner wall of the cavity, the length of the cavity in the moving direction of the moving contact meets the requirement of opening of the moving contact, the conducting rod is located on one side, close to the fixed contact, of the moving contact body and penetrates through the through hole, the moving contact is matched with the fixed contact through a sealing piece arranged outside the moving contact body to enable the cavity.
Has the advantages that: the arc extinguish chamber in the prior art realizes arc extinguish chamber switching on by adopting a forward contact mode of the moving contact and the static contact, the moving contact and the static contact in the invention realize arc extinguish chamber switching on by adopting a reverse contact mode, the switching-on direction of the moving contact and the switching-off direction of the static contact are opposite to that of the conventional arc extinguish chamber, a novel switching-on and switching-off mode of the arc extinguish chamber is provided, different types of bases are provided for the improvement of the arc extinguish chamber, the static contact of the arc extinguish chamber is internally provided with an airtight cavity, the moving contact is arranged inside the static contact, the moving contact can realize the switching-on and switching-off of the arc extinguish chamber inside the static contact, the outside of the static contact does not need to be. The insulating distance is set between the periphery of the movable contact body and the inner wall of the cavity, so that the insulating requirement of the movable contact body and the static contact can be met, and the effect that the outer periphery of the movable contact body is too close to the inner wall of the cavity to cause arc breakdown and further prevent the movable contact body from being broken is avoided.
Scheme 2: on the basis of the scheme 1, the conducting rod is in guide fit with the static contact through an insulating ring arranged between the conducting rod and the static contact. The insulating ring is simple and convenient in arrangement mode, the conducting rod and the static contact can be in insulating fit, and the condition that the conducting rod and the static contact are in short circuit due to air insulation is avoided. In addition, the conducting rod is easy to deviate from the center position of the through hole of the static contact after being repeatedly drawn, and the insulating ring which plays a role in guiding is arranged between the conducting rod and the static contact, so that the conducting rod can be ensured to be still in a vertical state after being drawn for many times, and the use frequency of the switch fracture is increased.
Scheme 3: on the basis of the scheme 1, the outer diameter of the moving contact body is larger than that of the conducting rod, and the longitudinal section of the moving contact is T-shaped. The external diameter of the movable contact body is larger than the condition that the movable contact and the static contact are separated when the distance pulled by the movable contact is too large can be avoided by the conductive rod, the external diameter of the movable contact body is larger, a contact surface of the movable contact and the static contact can be formed on one side, facing the static contact, of the movable contact body, and then switching-on and switching-off of a switch fracture are achieved through contact and separation of the contact surface.
Scheme 4: on the basis of any one of the schemes 1 to 3, the fixed contact is provided with a jack or a slot which is used for being matched with the movable contact. The moving contact can contact with the static contact at pore wall or cell wall department, has increased the area of contact that the moving contact also with the static contact, and then has increased the current capacity.
Scheme 5: on the basis of scheme 4, a contact finger is installed in the jack or the slot. The contact finger has better conductivity, so that the current capacity of the switch fracture can be further increased.
The arc extinguish chamber provided with the sealing shell adopts the following technical scheme:
scheme 1: the arc extinguish chamber comprises a sealing shell, a fixed contact and a direct-acting moving contact, wherein the fixed contact and the direct-acting moving contact are installed in the sealing shell, the sealing shell is a vacuum shell or is filled with arc extinguishing gas, the moving contact comprises a moving contact body and a conducting rod, a through hole is formed in the fixed contact, the moving contact body is located on one side of the fixed contact, the conducting rod is located on one side, close to the fixed contact, of the moving contact body, the conducting rod penetrates through the through hole in the fixed contact and is insulated from the fixed contact, and the moving contact body can close to the fixed contact through reciprocating motion to close a switch and.
Has the advantages that: the arc extinguish chamber in the prior art realizes arc extinguish chamber switching on by adopting a forward contact mode of the moving contact and the fixed contact, the moving contact and the fixed contact in the arc extinguish chamber switching on by adopting a reverse contact mode, the switching-on and switching-off directions of the moving contact and the fixed contact of the arc extinguish chamber are opposite to the switching-on and switching-off directions of the moving contact and the fixed contact of a conventional arc extinguish chamber, a novel switching-on and switching-off mode of the arc extinguish chamber is provided, different types of bases are provided for the improvement of the arc extinguish chamber, and a sealing shell is arranged on the outer sides of the moving contact and the fixed contact.
Scheme 2: on the basis of the scheme 1, the static contact is connected with a static contact seat, the static contact seat is provided with a cavity, the through hole forms an opening of the cavity, the movable contact is located in the cavity, a set insulation distance is reserved between the periphery of the movable contact and the inner wall of the cavity, the length of the cavity in the moving direction of the movable contact meets the requirement of opening of the movable contact, the movable contact is matched with the static contact through a sealing element arranged outside the movable contact, so that the cavity forms a closed cavity, and the closed cavity is a vacuum cavity as a sealing shell or is filled with arc extinguishing gas. The movable contact body is positioned in the static contact seat of the static contact, the static contact seat is provided with the sealed cavity, and the sealed cavity is provided with vacuum or arc-extinguishing gas which is the same as that in the sealed shell, so that the pressure of the sealed cavity is consistent with that of the sealed shell, when the airtightness in the sealed cavity is in a problem, the arc-extinguishing chamber can still be in a relatively stable state, and the phenomenon of pressure mutation in two sealed spaces is avoided. In addition, the movable contact body and the static contact adopt double-layer sealed spaces, so that the sealing effect is ensured, and the arc extinguish chamber can still continue to work when any layer of sealed space has a problem.
Scheme 3: on the basis of the scheme 2, the conducting rod is in guide fit with the static contact through an insulating ring arranged between the conducting rod and the static contact. The insulating ring is simple and convenient in arrangement mode, the conducting rod and the static contact can be in insulating fit, and the condition that the conducting rod and the static contact are in short circuit due to air insulation is avoided. In addition, the conducting rod is easy to deviate from the center position of the through hole of the static contact after being repeatedly drawn, and the insulating ring which plays a role in guiding is arranged between the conducting rod and the static contact, so that the conducting rod can be ensured to be still in a vertical state after being drawn for many times, and the use frequency of the switch fracture is increased.
Scheme 4: on the basis of the scheme 1, the outer diameter of the moving contact body is larger than that of the conducting rod, and the longitudinal section of the moving contact is T-shaped. The external diameter of the movable contact body is larger than the condition that the movable contact and the static contact are separated when the distance pulled by the movable contact is too large can be avoided by the conductive rod, the external diameter of the movable contact body is larger, a contact surface of the movable contact and the static contact can be formed on one side, facing the static contact, of the movable contact body, and then switching-on and switching-off of a switch fracture are achieved through contact and separation of the contact surface.
Scheme 5: on the basis of the schemes 1 to 4, the fixed contact is provided with a jack or a slot which is used for being matched with the movable contact. The moving contact can contact with the static contact at pore wall or cell wall department, has increased the area of contact that the moving contact also with the static contact, and then has increased the current capacity.
Scheme 6: on the basis of the scheme 5, the contact fingers are installed in the jacks or the slots. The contact finger has better conductivity, so that the current capacity of the switch fracture can be further increased.
The solid-sealed polar pole with the sealed cavity inside the static contact adopts the following technical scheme:
scheme 1: the solid-sealed polar pole comprises a static end outgoing line seat, a dynamic end outgoing line seat and an arc extinguish chamber, the arc extinguish chamber comprises a static contact and a direct-acting type moving contact, the static contact is connected with the static contact, the moving contact comprises a moving contact body and a conducting rod connected with the moving contact body, the static contact seat is provided with a cavity, a through hole is formed in the static contact, the through hole forms an opening of the cavity, the moving contact is located in the cavity, a set insulation distance is reserved between the periphery of the moving contact body and the inner wall of the cavity, the length of the cavity in the moving direction of the moving contact meets the requirement of opening and closing of the moving contact, the conducting rod is located on one side, close to the static contact, of the moving contact body and penetrates through the through hole, the moving contact is matched with the static contact through a sealing element arranged outside.
Has the advantages that: the arc extinguish chamber in the embedded pole in the prior art realizes the arc extinguish chamber switching on in a mode that a moving contact is in forward contact with a fixed contact, the moving contact and the fixed contact of the arc extinguish chamber realize the arc extinguish chamber switching on in a mode that the moving contact and the fixed contact are in reverse contact, the moving contact and the fixed contact of the conventional arc extinguish chamber are opposite in switching-on and switching-off directions, a novel switching-on and switching-off mode of the arc extinguish chamber is provided, different types of bases are provided for improvement of the arc extinguish chamber, the fixed contact of the arc extinguish chamber is internally provided with an airtight cavity, the moving contact is arranged inside the fixed contact, the moving contact can realize switching-on and switching-off of the arc extinguish chamber inside the fixed contact, a shell used for sealing does. The insulating distance is set between the periphery of the movable contact body and the inner wall of the cavity, so that the insulating requirement of the movable contact body and the static contact can be met, and the effect that the outer periphery of the movable contact body is too close to the inner wall of the cavity to cause arc breakdown and further prevent the movable contact body from being broken is avoided.
Scheme 2: on the basis of the scheme 1, the conducting rod is in guide fit with the static contact through an insulating ring arranged between the conducting rod and the static contact. The insulating ring is simple and convenient in arrangement mode, the conducting rod and the static contact can be in insulating fit, and the condition that the conducting rod and the static contact are in short circuit due to air insulation is avoided. In addition, the conducting rod is easy to deviate from the center position of the through hole of the static contact after being repeatedly drawn, and the insulating ring which plays a role in guiding is arranged between the conducting rod and the static contact, so that the conducting rod can be ensured to be still in a vertical state after being drawn for many times, and the use frequency of the switch fracture is increased.
Scheme 3: on the basis of the scheme 1, the outer diameter of the moving contact body is larger than that of the conducting rod, and the longitudinal section of the moving contact is T-shaped. The external diameter of the movable contact body is larger than the condition that the movable contact and the static contact are separated when the distance pulled by the movable contact is too large can be avoided by the conductive rod, the external diameter of the movable contact body is larger, a contact surface of the movable contact and the static contact can be formed on one side, facing the static contact, of the movable contact body, and then switching-on and switching-off of a switch fracture are achieved through contact and separation of the contact surface.
Scheme 4: on the basis of any one of the schemes 1 to 3, the fixed contact is provided with a jack or a slot which is used for being matched with the movable contact. The moving contact can contact with the static contact at pore wall or cell wall department, has increased the area of contact that the moving contact also with the static contact, and then has increased the current capacity.
Scheme 5: on the basis of scheme 4, a contact finger is installed in the jack or the slot. The contact finger has better conductivity, so that the current capacity of the switch fracture can be further increased.
The solid-sealed polar pole with the sealed shell in the arc extinguish chamber adopts the following technical scheme:
scheme 1: the solid-sealed pole comprises a static end outgoing line seat, a movable end outgoing line seat and an arc extinguish chamber, the arc extinguish chamber comprises a sealing shell, a static contact and a direct-acting type moving contact, the static contact and the direct-acting type moving contact are mounted in the sealing shell, the sealing shell is a vacuum shell or is filled with arc extinguishing gas, the moving contact comprises a moving contact body and a conducting rod, a through hole is formed in the static contact, the moving contact body is located on one side of the static contact, the conducting rod is located on one side, close to the static contact, of the moving contact body, the conducting rod penetrates through the through hole in the static contact and is insulated from the static contact, and the moving contact body can move towards the static.
Has the advantages that: the arc extinguish chamber of the solid-sealed polar pole in the prior art realizes the switching-on of the arc extinguish chamber in a mode of forward contact of the moving contact and the static contact, the moving contact and the static contact in the arc extinguish chamber realize the switching-on of the arc extinguish chamber in a mode of reverse contact, the switching-on and switching-off directions of the moving contact and the static contact of the arc extinguish chamber are opposite to the switching-on and switching-off directions of the moving contact and the static contact of a conventional arc extinguish chamber, a novel switching-on and switching-off mode of the arc extinguish chamber is provided, different types of bases are provided for the improvement of the arc extinguish chamber, and the.
Scheme 2: on the basis of the scheme 1, the static contact is connected with a static contact seat, the static contact seat is provided with a cavity, the through hole forms an opening of the cavity, the movable contact is located in the cavity, a set insulation distance is reserved between the periphery of the movable contact and the inner wall of the cavity, the length of the cavity in the moving direction of the movable contact meets the requirement of opening of the movable contact, the movable contact is matched with the static contact through a sealing element arranged outside the movable contact, so that the cavity forms a closed cavity, and the closed cavity is a vacuum cavity as a sealing shell or is filled with arc extinguishing gas. The movable contact body is positioned in the static contact seat of the static contact, the static contact seat is provided with the sealed cavity, and the sealed cavity is provided with vacuum or arc-extinguishing gas which is the same as that in the sealed shell, so that the pressure of the sealed cavity is consistent with that of the sealed shell, when the airtightness in the sealed cavity is in a problem, the arc-extinguishing chamber can still be in a relatively stable state, and the phenomenon of pressure mutation in two sealed spaces is avoided. In addition, the movable contact body and the static contact adopt double-layer sealed spaces, so that the sealing effect is ensured, and the arc extinguish chamber can still continue to work when any layer of sealed space has a problem.
Scheme 3: on the basis of the scheme 2, the conducting rod is in guide fit with the static contact through an insulating ring arranged between the conducting rod and the static contact. The insulating ring is simple and convenient in arrangement mode, the conducting rod and the static contact can be in insulating fit, and the condition that the conducting rod and the static contact are in short circuit due to air insulation is avoided. In addition, the conducting rod is easy to deviate from the center position of the through hole of the static contact after being repeatedly drawn, and the insulating ring which plays a role in guiding is arranged between the conducting rod and the static contact, so that the conducting rod can be ensured to be still in a vertical state after being drawn for many times, and the use frequency of the switch fracture is increased.
Scheme 4: on the basis of the scheme 1, the outer diameter of the moving contact body is larger than that of the conducting rod, and the longitudinal section of the moving contact is T-shaped. The external diameter of the movable contact body is larger than the condition that the movable contact and the static contact are separated when the distance pulled by the movable contact is too large can be avoided by the conductive rod, the external diameter of the movable contact body is larger, a contact surface of the movable contact and the static contact can be formed on one side, facing the static contact, of the movable contact body, and then switching-on and switching-off of a switch fracture are achieved through contact and separation of the contact surface.
Scheme 5: on the basis of any one of the schemes 1 to 4, the fixed contact is provided with a jack or a slot which is used for being matched with the movable contact. The moving contact can contact with the static contact at pore wall or cell wall department, has increased the area of contact that the moving contact also with the static contact, and then has increased the current capacity.
Scheme 6: on the basis of the scheme 5, the contact fingers are installed in the jacks or the slots. The contact finger has better conductivity, so that the current capacity of the switch fracture can be further increased.
The circuit breaker with the closed cavity inside the static contact adopts the following technical scheme:
scheme 1: the circuit breaker comprises an operating mechanism and an arc extinguishing chamber, the arc extinguishing chamber comprises a fixed contact and a direct-acting moving contact, the fixed contact is connected with a fixed contact base, the moving contact comprises a moving contact body and a conducting rod connected with the moving contact body, the conducting rod is in transmission connection with the operating mechanism, the fixed contact base is provided with a cavity, a through hole is formed in the fixed contact, the through hole forms an opening of the cavity, the moving contact body is located in the cavity, a set insulation distance is reserved between the periphery of the moving contact body and the inner wall of the cavity, the length of the cavity in the moving direction of the moving contact meets the requirement of opening of the moving contact, the conducting rod is located on one side, close to the fixed contact, of the moving contact body and penetrates through the through hole, the moving contact is matched with the fixed contact through a sealing element arranged on.
Has the advantages that: the arc extinguish chamber in the circuit breaker in the prior art realizes arc extinguish chamber switching on by adopting a forward contact mode of the moving contact and the fixed contact, the moving contact and the fixed contact of the arc extinguish chamber realize arc extinguish chamber switching on by adopting a reverse contact mode, the switching-on and switching-off directions of the moving contact and the fixed contact of the conventional arc extinguish chamber are opposite, a novel switching-on and switching-off mode of the arc extinguish chamber is provided, different types of bases are provided for the improvement of the arc extinguish chamber, the fixed contact of the arc extinguish chamber is internally provided with a closed cavity, the moving contact is arranged inside the fixed contact, the moving contact can realize switching-on and switching-off of the arc extinguish chamber inside the fixed contact, a shell for sealing does not need to be separately arranged outside the fixed. The insulating distance is set between the periphery of the movable contact body and the inner wall of the cavity, so that the insulating requirement of the movable contact body and the static contact can be met, and the effect that the outer periphery of the movable contact body is too close to the inner wall of the cavity to cause arc breakdown and further prevent the movable contact body from being broken is avoided.
Scheme 2: on the basis of the scheme 1, the conducting rod is in guide fit with the static contact through an insulating ring arranged between the conducting rod and the static contact. The insulating ring is simple and convenient in arrangement mode, the conducting rod and the static contact can be in insulating fit, and the condition that the conducting rod and the static contact are in short circuit due to air insulation is avoided. In addition, the conducting rod is easy to deviate from the center position of the through hole of the static contact after being repeatedly drawn, and the insulating ring which plays a role in guiding is arranged between the conducting rod and the static contact, so that the conducting rod can be ensured to be still in a vertical state after being drawn for many times, and the use frequency of the switch fracture is increased.
Scheme 3: on the basis of the scheme 1, the outer diameter of the moving contact body is larger than that of the conducting rod, and the longitudinal section of the moving contact is T-shaped. The external diameter of the movable contact body is larger than the condition that the movable contact and the static contact are separated when the distance pulled by the movable contact is too large can be avoided by the conductive rod, the external diameter of the movable contact body is larger, a contact surface of the movable contact and the static contact can be formed on one side, facing the static contact, of the movable contact body, and then switching-on and switching-off of a switch fracture are achieved through contact and separation of the contact surface.
Scheme 4: on the basis of any one of the schemes 1 to 3, the fixed contact is provided with a jack or a slot which is used for being matched with the movable contact. The moving contact can contact with the static contact at pore wall or cell wall department, has increased the area of contact that the moving contact also with the static contact, and then has increased the current capacity.
Scheme 5: on the basis of scheme 4, a contact finger is installed in the jack or the slot. The contact finger has better conductivity, so that the current capacity of the switch fracture can be further increased.
The circuit breaker with the arc extinguish chamber provided with the sealed shell adopts the following technical scheme:
scheme 1: the circuit breaker comprises an operating mechanism and an arc extinguish chamber, the arc extinguish chamber comprises a sealing shell, a static contact and a direct-acting moving contact, the static contact and the direct-acting moving contact are mounted in the sealing shell, the sealing shell is a vacuum shell or is filled with arc extinguishing gas, the moving contact comprises a moving contact body and a conducting rod, the conducting rod is in transmission connection with the operating mechanism, a through hole is formed in the static contact, the moving contact body is located on one side of the static contact, the conducting rod is located on one side, close to the static contact, of the moving contact body, penetrates through the through hole in the static contact and is insulated from the static contact, and the moving contact body can move back and forth to close.
Has the advantages that: the arc extinguish chamber in the prior art realizes arc extinguish chamber switching on by adopting a forward contact mode of the moving contact and the fixed contact, the moving contact and the fixed contact in the arc extinguish chamber switching on by adopting a reverse contact mode, the switching-on and switching-off directions of the moving contact and the fixed contact of the arc extinguish chamber are opposite to the switching-on and switching-off directions of the moving contact and the fixed contact of a conventional arc extinguish chamber, a novel switching-on and switching-off mode of the arc extinguish chamber is provided, different types of bases are provided for the improvement of the arc extinguish chamber, and a sealing shell is arranged on the outer sides of the moving contact and the fixed contact.
Scheme 2: on the basis of the scheme 1, the static contact is connected with a static contact seat, the static contact seat is provided with a cavity, the through hole forms an opening of the cavity, the movable contact is located in the cavity, a set insulation distance is reserved between the periphery of the movable contact and the inner wall of the cavity, the length of the cavity in the moving direction of the movable contact meets the requirement of opening of the movable contact, the movable contact is matched with the static contact through a sealing element arranged outside the movable contact, so that the cavity forms a closed cavity, and the closed cavity is a vacuum cavity as a sealing shell or is filled with arc extinguishing gas. The movable contact body is positioned in the static contact seat of the static contact, the static contact seat is provided with the sealed cavity, and the sealed cavity is provided with vacuum or arc-extinguishing gas which is the same as that in the sealed shell, so that the pressure of the sealed cavity is consistent with that of the sealed shell, when the airtightness in the sealed cavity is in a problem, the arc-extinguishing chamber can still be in a relatively stable state, and the phenomenon of pressure mutation in two sealed spaces is avoided. In addition, the movable contact body and the static contact adopt double-layer sealed spaces, so that the sealing effect is ensured, and the arc extinguish chamber can still continue to work when any layer of sealed space has a problem.
Scheme 3: on the basis of the scheme 2, the conducting rod is in guide fit with the static contact through an insulating ring arranged between the conducting rod and the static contact. The insulating ring is simple and convenient in arrangement mode, the conducting rod and the static contact can be in insulating fit, and the condition that the conducting rod and the static contact are in short circuit due to air insulation is avoided. In addition, the conducting rod is easy to deviate from the center position of the through hole of the static contact after being repeatedly drawn, and the insulating ring which plays a role in guiding is arranged between the conducting rod and the static contact, so that the conducting rod can be ensured to be still in a vertical state after being drawn for many times, and the use frequency of the switch fracture is increased.
Scheme 4: on the basis of the scheme 1, the outer diameter of the moving contact body is larger than that of the conducting rod, and the longitudinal section of the moving contact is T-shaped. The external diameter of the movable contact body is larger than the condition that the movable contact and the static contact are separated when the distance pulled by the movable contact is too large can be avoided by the conductive rod, the external diameter of the movable contact body is larger, a contact surface of the movable contact and the static contact can be formed on one side, facing the static contact, of the movable contact body, and then switching-on and switching-off of a switch fracture are achieved through contact and separation of the contact surface.
Scheme 5: on the basis of the schemes 1 to 4, the fixed contact is provided with a jack or a slot which is used for being matched with the movable contact. The moving contact can contact with the static contact at pore wall or cell wall department, has increased the area of contact that the moving contact also with the static contact, and then has increased the current capacity.
Scheme 6: on the basis of the scheme 5, the contact fingers are installed in the jacks or the slots. The contact finger has better conductivity, so that the current capacity of the switch fracture can be further increased.
Drawings
Fig. 1 is a schematic opening state diagram of an embodiment 1 of a switch fracture of the present invention;
in fig. 1: 1-movable contact, 2-watchband contact finger, 3-static contact, 4-conductive rod, 5-insulating guide sleeve.
Fig. 2 is a schematic diagram of a closing state of a vacuum interrupter in embodiment 1 of the embedded pole of the present invention;
fig. 3 is a schematic view of the open state of the vacuum interrupter in embodiment 1 of the embedded pole according to the present invention;
fig. 4 is a schematic view of an open state of a vacuum interrupter according to embodiment 2 of the embedded pole of the present invention;
fig. 5 is a schematic diagram of a closing state of the vacuum interrupter in embodiment 2 of the embedded pole of the present invention;
in FIGS. 2 to 5: 1-pole shell, 2-moving contact, 3-static contact seat, 4-corrugated pipe, 5-watchband contact finger, 6-static cover plate, 7-insulating guide sleeve and 8-conductive rod.
Detailed Description
The following describes the embodiments of the switch fracture, arc-extinguishing chamber, embedded pole and circuit breaker in further detail with reference to the attached drawings.
Example 1 of a switching break according to the invention:
as shown in fig. 1, the switch fracture is an open state diagram of the switch fracture, the switch fracture includes a moving contact and a static contact 3, a cross section of the moving contact is T-shaped, the moving contact includes a moving contact body 1 and a conducting rod 4 fixed on one side of the moving contact body 1, a through hole for the conducting rod 4 to pass through is provided on the static contact 3, an insulating guide sleeve 5 is provided between a side wall of the through hole and the conducting rod 4, the insulating guide sleeve constitutes an insulating ring in the embodiment, a groove for the moving contact body 1 of the moving contact to insert into is provided on the static contact 3, and a watchband contact finger 2 is arranged on a side wall. When the moving contact body 1 of the moving contact is contacted with the fixed contact 3, the switch fracture realizes switching on, and further realizes circuit conduction; when the moving contact body 1 of the moving contact is far away from the static contact 3, the switch fracture realizes switching-off, and further circuit breaking is realized.
In other embodiments: the static contact is not provided with a groove, and one side of the static contact, which is in contact with the movable contact body, is a plane; the through hole of the static contact is not provided with an insulating guide sleeve, the inner wall of the through hole of the static contact is spaced from the conductive rod by a certain distance, and the conductive rod is insulated from the insulating guide sleeve by air; the groove of the static contact is not provided with a watchband contact finger.
Example 1 of the embedded pole of the present invention:
fig. 2 to 3 show a solid-sealed pole after solid sealing, where the solid-sealed pole includes a pole housing 1, an upper wire outlet seat, a lower wire outlet seat, and a vacuum arc-extinguishing chamber, the vacuum arc-extinguishing chamber includes a static contact and a moving contact 2, the static contact is connected and fixed to an opening of the static contact seat 3, the static contact includes a static cover 6 and other related accessories, in this embodiment, the related accessories are a watchband contact finger 5 and an insulating guide sleeve 7, and the insulating guide sleeve constitutes an insulating ring in this embodiment. The whole shape of stationary contact seat 3 is open-ended hollow cylinder for one side bottom surface, and stationary contact seat 3 has one side of bottom surface to connect through screw and last outlet seat, and the opening of stationary contact seat 3 is ring shape, has arranged the screw hole on the open-ended plane, and the opening seals through quiet apron 6, and quiet apron 6 is connected with stationary contact seat 3 with the screw. Step-shaped through holes are arranged inside the static cover plate 6, the through holes are round holes, the round holes with the larger diameters of the step-shaped through holes face one side of the static contact seat 3, and the round holes with the smaller diameters face the outer side of the static contact seat 3. The moving contact 2 is arranged in an inner cavity of the static contact seat 3, a moving conducting rod is connected to the moving contact 2, and the moving conducting rod penetrates through a step-shaped through hole in the static cover plate 6 to be connected with a conducting rod 8 outside the vacuum arc extinguish chamber. In order to avoid the reduction of the current capacity of the moving contact 2 and the static contact after the vacuum arc-extinguishing chamber is repeatedly opened and closed, the inner wall of a round hole with a step-shaped through hole and a larger diameter on the static cover plate 6 is additionally provided with a watchband contact finger 5. In order to avoid the moving contact 2 deviating from the vertical state after the vacuum arc-extinguishing chamber frequently acts, an insulating guide sleeve 7 is additionally arranged on the inner wall of the circular hole of the step-shaped through hole facing the outer side of the stationary contact seat 3, and the insulating guide sleeve 7 can not only keep the moving contact 2 in the vertical state, but also play a role in sealing and insulating the vacuum arc-extinguishing chamber. Still be provided with bellows 4 between moving contact 2 and the quiet apron 6, bellows 4 one end is fixed on moving contact 2 is connected with the plane of moving the conducting rod, moves the conducting rod in bellows 4's inside, and the other end is fixed on the bottom surface of the great round hole of diameter of the step-like through-hole of quiet apron 6, and insulating uide bushing 7 is located the inside of bellows 4. It should be noted that the sealing member used for forming the sealed cavity inside the stationary contact base in the present embodiment is a corrugated pipe 4; and a shell made of porcelain or glass is arranged on the outer side of the static contact seat 3.
When the switch is in work, the movable conducting rod on the movable contact 2 is connected with the external conducting rod 8, the reciprocating motion in the cavity of the stationary contact seat 3 is realized under the driving of the conducting rod 8, and when the movable contact 2 is far away from the stationary cover plate 6, the vacuum arc extinguish chamber is in a brake-off state, so that the disconnection of a circuit is realized. When the moving contact 2 moves into the large round hole of the step-shaped through hole on the static cover plate 6, the peripheral surface of the moving contact 2 is contacted with the static cover plate 6 and the watchband contact finger 5 on the inner side wall of the large round hole, thereby realizing the communication of the circuit.
The difference between example 2 of the embedded pole of the present invention and example 1 is that: as shown in fig. 4 to 5, the vacuum interrupter is not provided with a bellows, and the vacuum interrupter is sealed by an insulating guide sleeve 7 arranged between a static cover plate 6 and a conducting rod 8.
The difference between example 3 of the embedded pole of the present invention and example 1 is that: the interior of a porcelain body or a glass shell of the vacuum arc extinguish chamber is vacuum, the moving contact, the static contact and the static contact seat connected with the static contact are positioned in the sealed shell, and the inner cavity of the static contact seat is communicated with a vacuum space sealed by the sealed shell.
The difference between example 4 of the embedded pole of the present invention and example 3 is that: the space between the porcelain body or the glass shell of the vacuum arc extinguish chamber and the static contact seat is a closed space, the inner cavity of the static contact seat is also a closed space, the respective sealed spaces of the sealed shell and the sealed cavity are relatively independent, but the media in the two closed cavities are the same.
In other embodiments: when the interior of the stationary contact base is a closed space, the outer shell is not arranged outside the vacuum arc extinguish chamber.
In other embodiments: the static contact is in other shapes, such as a hollow prism structure and a hollow cone structure.
In other embodiments: the static cover plate and the static contact seat are sealed in other modes, for example, the static cover plate is also designed into a cylindrical shape, threads are arranged on the outer side of the cylindrical shape, and the static cover plate is screwed into the static contact seat in a threaded connection mode.
In other embodiments: two closed spaces formed by the closed cavity of the static contact seat and the sealed shell are not in vacuum, and arc extinguishing gas is filled in the closed spaces.
In other embodiments: the static contact is not provided with a groove structure matched with the movable contact body, and the contact side of the static contact and the movable contact body is a plane.
Embodiment of the arc chute of the invention: the structure of the arc extinguishing chamber is the same as that of the arc extinguishing chamber in the solid-sealed polar pole, and the description is omitted here.
Embodiments of the circuit breaker of the invention: the circuit breaker includes operating mechanism and explosion chamber, and operating mechanism is used for controlling the break-make of explosion chamber, and the explosion chamber in the circuit breaker is the same with the structure of explosion chamber in the above-mentioned solid utmost point post that seals, and here is no longer repeated.

Claims (30)

1. The arc extinguish chamber comprises a static contact and a direct-acting moving contact, wherein the static contact is connected with a static contact base, and the moving contact comprises a moving contact body and a conducting rod connected with the moving contact body; the fixed contact is fixedly connected with the opening of the fixed contact seat; the static contact comprises a static cover plate; the opening of the static contact seat is in a ring shape, a threaded hole is arranged on the plane of the opening, the opening is sealed through a static cover plate, and the static cover plate is connected with the static contact seat through a screw; the static cover plate is provided with a through hole, the through hole forms an opening of a cavity, the movable contact is arranged in the cavity, a set insulation distance is reserved between the periphery of the movable contact and the inner wall of the cavity, the length of the cavity in the moving direction of the movable contact meets the requirement of opening the movable contact, the conducting rod is arranged on one side, close to the static contact, of the movable contact and penetrates through the through hole, the movable contact is matched with the static contact through a sealing element arranged outside the movable contact, so that the cavity forms a closed cavity, and the closed cavity is a vacuum cavity or is filled with arc extinguishing gas.
2. The arc extinguish chamber according to claim 1, wherein the conducting rod is in guiding fit with the static contact through an insulating ring arranged between the conducting rod and the static contact.
3. The arc extinguish chamber according to claim 1, wherein the outer diameter of the movable contact body is larger than that of the conducting rod, and the longitudinal section of the movable contact is T-shaped.
4. The arc extinguish chamber according to any one of claims 1 to 3, wherein the fixed contact is provided with a jack or a slot for being matched with the movable contact.
5. The arc chute of claim 4, wherein a contact finger is mounted in the socket or slot.
6. The arc extinguish chamber comprises a sealing shell, a fixed contact and a direct-acting moving contact, wherein the fixed contact and the direct-acting moving contact are installed in the sealing shell, the sealing shell is a vacuum shell or arc extinguish gas is filled in the sealing shell, and the moving contact comprises a moving contact body and a conducting rod; the static contact is connected with a static contact seat, the static contact seat is provided with a cavity, and the whole shape of the static contact seat is a hollow cylinder with an opening on the bottom surface of one side; the fixed contact is fixedly connected with the opening of the fixed contact seat; the static contact comprises a static cover plate; the opening of the static contact seat is in a ring shape, a threaded hole is arranged on the plane of the opening, the opening is sealed through a static cover plate, and the static cover plate is connected with the static contact seat through a screw; the through hole is specifically arranged on the static cover plate, the through hole forms an opening of a cavity, the movable contact is arranged in the cavity, a set insulation distance is reserved between the periphery of the movable contact and the inner wall of the cavity, the length of the cavity in the moving direction of the movable contact meets the requirement of opening the movable contact, the movable contact is matched with the static contact through a sealing element arranged outside the movable contact, so that the cavity forms a closed cavity, and the closed cavity is a vacuum cavity as well as a sealing shell or is filled with arc extinguishing gas.
7. The arc extinguish chamber according to claim 6, wherein the conducting rod is in guiding fit with the static contact through an insulating ring arranged between the conducting rod and the static contact.
8. The arc extinguish chamber according to claim 6, wherein the outer diameter of the movable contact body is larger than that of the conducting rod, and the longitudinal section of the movable contact is T-shaped.
9. The arc extinguish chamber according to any one of claims 6 to 8, wherein the fixed contact is provided with a jack or a slot for being matched with the movable contact.
10. Arc chute according to claim 9, characterized in that a contact finger is mounted in the socket or slot.
11. The solid-sealed pole comprises a static end outgoing line seat, a movable end outgoing line seat and an arc extinguish chamber, wherein the arc extinguish chamber comprises a static contact and a direct-acting type movable contact; the fixed contact is fixedly connected with the opening of the fixed contact seat; the static contact comprises a static cover plate; the opening of the static contact seat is in a ring shape, a threaded hole is arranged on the plane of the opening, the opening is sealed through a static cover plate, and the static cover plate is connected with the static contact seat through a screw; the static cover plate is provided with a through hole, the through hole forms an opening of a cavity, the movable contact is arranged in the cavity, a set insulation distance is reserved between the periphery of the movable contact and the inner wall of the cavity, the length of the cavity in the moving direction of the movable contact meets the requirement of opening the movable contact, the conducting rod is arranged on one side, close to the static contact, of the movable contact and penetrates through the through hole, the movable contact is matched with the static contact through a sealing element arranged outside the movable contact, so that the cavity forms a closed cavity, and the closed cavity is a vacuum cavity or is filled with arc extinguishing gas.
12. The embedded pole of claim 11, wherein the conductive rod is in guiding fit with the stationary contact through an insulating ring disposed therebetween.
13. The embedded pole as claimed in claim 11, wherein the movable contact has an outer diameter larger than that of the conductive rod, and a longitudinal section of the movable contact is "T" shaped.
14. The embedded pole of any one of claims 11 to 13, wherein the stationary contact is provided with a socket or slot for engaging with the movable contact.
15. The embedded pole of claim 14, wherein the insertion hole or slot has a contact finger mounted therein.
16. The solid-sealed pole comprises a static end outgoing line seat, a movable end outgoing line seat and an arc extinguish chamber, wherein the arc extinguish chamber comprises a sealing shell, a static contact and a direct-acting type moving contact which are installed in the sealing shell, the sealing shell is a vacuum shell or is filled with arc extinguishing gas, and the moving contact comprises a moving contact body and a conducting rod; the static contact is connected with a static contact seat, the static contact seat is provided with a cavity, and the whole shape of the static contact seat is a hollow cylinder with an opening on the bottom surface of one side; the fixed contact is fixedly connected with the opening of the fixed contact seat; the static contact comprises a static cover plate; the opening of the static contact seat is in a ring shape, a threaded hole is arranged on the plane of the opening, the opening is sealed through a static cover plate, and the static cover plate is connected with the static contact seat through a screw; the through hole is specifically arranged on the static cover plate; the through hole forms an opening of the cavity, the movable contact body is arranged in the cavity, a set insulation distance is reserved between the periphery of the movable contact body and the inner wall of the cavity, the length of the cavity in the moving direction of the movable contact meets the requirement of opening the movable contact, the movable contact is matched with the fixed contact through a sealing element arranged outside the movable contact, so that the cavity forms a closed cavity, and the closed cavity is a vacuum cavity as well as the sealing shell or is filled with arc extinguishing gas.
17. The embedded pole of claim 16, wherein the conductive rod is in guiding fit with the stationary contact through an insulating ring disposed therebetween.
18. The embedded pole of claim 16, wherein the outer diameter of the movable contact is larger than the outer diameter of the conductive rod, and the longitudinal section of the movable contact is "T" shaped.
19. The embedded pole of any one of claims 16 to 18, wherein the stationary contact is provided with a socket or slot for engaging with the movable contact.
20. The embedded pole of claim 19, wherein the insertion hole or slot has a contact finger mounted therein.
21. The circuit breaker comprises an operating mechanism and an arc extinguish chamber, wherein the arc extinguish chamber comprises a fixed contact and a direct-acting movable contact, the fixed contact is connected with a fixed contact base, the movable contact comprises a movable contact body and a conductive rod connected with the movable contact body, and the conductive rod is in transmission connection with the operating mechanism; the fixed contact is fixedly connected with the opening of the fixed contact seat; the static contact comprises a static cover plate; the opening of the static contact seat is in a ring shape, a threaded hole is arranged on the plane of the opening, the opening is sealed through a static cover plate, and the static cover plate is connected with the static contact seat through a screw; the static cover plate is provided with a through hole, the through hole forms an opening of a cavity, the movable contact is arranged in the cavity, a set insulation distance is reserved between the periphery of the movable contact and the inner wall of the cavity, the length of the cavity in the moving direction of the movable contact meets the requirement of opening the movable contact, the conducting rod is arranged on one side, close to the static contact, of the movable contact and penetrates through the through hole, the movable contact is matched with the static contact through a sealing element arranged outside the movable contact, so that the cavity forms a closed cavity, and the closed cavity is a vacuum cavity or is filled with arc extinguishing gas.
22. The circuit breaker of claim 21, wherein the conductive rod is in guiding engagement with the stationary contact through an insulating ring disposed therebetween.
23. The circuit breaker of claim 21, wherein the moving contact has an outer diameter greater than an outer diameter of the conductive rod, and a longitudinal section of the moving contact is "T" shaped.
24. The circuit breaker according to any one of claims 21-23, wherein the stationary contact is provided with a socket or slot for engaging with the movable contact.
25. The circuit breaker of claim 24, wherein the receptacle or socket has a contact finger mounted therein.
26. The circuit breaker comprises an operating mechanism and an arc extinguish chamber, wherein the arc extinguish chamber comprises a sealing shell, a static contact and a direct-acting moving contact, the static contact and the direct-acting moving contact are installed in the sealing shell, the sealing shell is a vacuum shell or is filled with arc extinguish gas, the moving contact comprises a moving contact body and a conducting rod, and the conducting rod is in transmission connection with the operating mechanism; the static contact is connected with a static contact seat, the static contact seat is provided with a cavity, and the whole shape of the static contact seat is a hollow cylinder with an opening on the bottom surface of one side; the fixed contact is fixedly connected with the opening of the fixed contact seat; the static contact comprises a static cover plate; the opening of the static contact seat is in a ring shape, a threaded hole is arranged on the plane of the opening, the opening is sealed through a static cover plate, and the static cover plate is connected with the static contact seat through a screw; the through hole is specifically arranged on the static cover plate; the through hole forms an opening of the cavity, the movable contact body is arranged in the cavity, a set insulation distance is reserved between the periphery of the movable contact body and the inner wall of the cavity, the length of the cavity in the moving direction of the movable contact meets the requirement of opening the movable contact, the movable contact is matched with the fixed contact through a sealing element arranged outside the movable contact, so that the cavity forms a closed cavity, and the closed cavity is a vacuum cavity as well as the sealing shell or is filled with arc extinguishing gas.
27. The circuit breaker of claim 26, wherein the conductive rod is in guiding engagement with the stationary contact through an insulating ring disposed therebetween.
28. The circuit breaker as claimed in claim 26, wherein the moving contact has an outer diameter larger than that of the conductive rod, and a longitudinal section of the moving contact is "T" shaped.
29. The circuit breaker according to any one of claims 26-28, wherein the stationary contact is provided with a socket or slot for engaging with the movable contact.
30. The circuit breaker of claim 29, wherein said receptacle or socket has a contact finger mounted therein.
CN201811062533.7A 2018-09-12 2018-09-12 Switch fracture, arc extinguish chamber, solid-sealed polar pole and circuit breaker Active CN109411289B (en)

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CN117476393B (en) * 2023-12-28 2024-03-15 南京大手笔电子科技有限公司 Solid-sealed arc-extinguishing chamber pole with built-in voltage sensor

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Publication number Priority date Publication date Assignee Title
GB1078863A (en) * 1964-08-12 1967-08-09 English Electric Co Ltd Improvements in or relating to circuit interrupters
SU1513538A1 (en) * 1988-02-29 1989-10-07 Харьковский институт инженеров коммунального строительства Vacuum arc chute
WO2002052596A1 (en) * 2000-12-22 2002-07-04 Socomec S.A. Vacuum selector switch light-bulb
WO2009138394A1 (en) * 2008-05-13 2009-11-19 Siemens Aktiengesellschaft Vacuum circuit interrupter
CN102522252A (en) * 2011-12-19 2012-06-27 中国西电电气股份有限公司 Fracture structure of non-SF6 gas-insulated metal-enclosed isolating switch

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1078863A (en) * 1964-08-12 1967-08-09 English Electric Co Ltd Improvements in or relating to circuit interrupters
SU1513538A1 (en) * 1988-02-29 1989-10-07 Харьковский институт инженеров коммунального строительства Vacuum arc chute
WO2002052596A1 (en) * 2000-12-22 2002-07-04 Socomec S.A. Vacuum selector switch light-bulb
WO2009138394A1 (en) * 2008-05-13 2009-11-19 Siemens Aktiengesellschaft Vacuum circuit interrupter
CN102522252A (en) * 2011-12-19 2012-06-27 中国西电电气股份有限公司 Fracture structure of non-SF6 gas-insulated metal-enclosed isolating switch

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