CN211828540U - Rotary type air-blast arc-extinguishing device - Google Patents
Rotary type air-blast arc-extinguishing device Download PDFInfo
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- CN211828540U CN211828540U CN201922441624.8U CN201922441624U CN211828540U CN 211828540 U CN211828540 U CN 211828540U CN 201922441624 U CN201922441624 U CN 201922441624U CN 211828540 U CN211828540 U CN 211828540U
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Abstract
The utility model relates to the field of low-voltage electrical appliances, in particular to a rotary type gas-blast arc-extinguishing device, which comprises at least one group of contact systems, wherein each group of contact systems is correspondingly matched with one group of arc-extinguishing chambers; each group of the contact systems comprises a moving contact component and at least one fixed contact; the moving contact component comprises a contact support arranged in a pivoting manner, a moving contact fixedly arranged on the contact support and at least one fan blade arranged on the contact support, and the moving contact comprises at least one contact end matched with the fixed contact; when the contact system is switched from a closed state to an open state, the moving contact component rotates, the fan blade is positioned behind the contact end in the rotating direction of the moving contact component, and an arc fan generated by separating the contact end from the static contact is inserted into the arc extinguishing chamber; the utility model discloses a rotation type air-blast arc control device, it rotates through the moving contact subassembly and drives the flabellum swing, goes into the explosion chamber with the electric arc fan, has improved electric arc velocity of motion and arc extinguishing efficiency.
Description
Technical Field
The utility model relates to a low-voltage apparatus field, concretely relates to rotation type gas blast arc control device.
Background
When the contact of the low-voltage electrical appliance is subjected to large-current breaking, high-voltage electric arcs are generated along with the contact, and if the electric arcs cannot be extinguished in time, the contact assembly is burnt, so that poor connection occurs in the subsequent use process of the electrical appliance; therefore, the breaking capacity is an important index of the low-voltage circuit breaker in practical application.
In the existing arc extinguishing system, magnetic blow is a widely applied scheme for controlling arc motion, but the magnetic blow needs to consider the current direction and calculate the magnetic field layout to realize the effect of changing the arc motion direction by magnetic field force, so that the best magnetic blow effect can be achieved by designing a specific conductive shape with a complex structure or adding the conductive shape to the part, which inevitably leads to the complication of the structure of an electric appliance, so that the production efficiency is not high, and the production cost is high.
The other scheme for controlling the moving direction of the electric arc is that gas is generated when a gas generating material meets high-temperature electric arc, so that the internal air pressure of the electric appliance is increased, and the electric arc enters into an arc extinguishing chamber and is extinguished and discharged as soon as possible; according to the scheme, the gas production material can not function until reaching a certain high temperature, and after multiple high temperatures, the subsequent gas production effect is not judged well (the subsequent gas production effect is always gradually deteriorated until failure).
Disclosure of Invention
An object of the utility model is to overcome prior art's defect, provide a rotation type air-blast arc control device, it rotates through the moving contact subassembly and drives the flabellum swing, goes into the explosion chamber with the electric arc fan, has improved electric arc velocity of motion and arc extinguishing efficiency.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
a rotary type gas-blast arc-extinguishing device comprises at least one group of contact systems, wherein each group of contact systems is correspondingly matched with a group of arc-extinguishing chambers 4; each group of the contact systems comprises a moving contact component 7 and at least one fixed contact; the movable contact assembly 7 comprises a contact support 70 arranged in a pivoting manner, a movable contact 711 fixedly arranged on the contact support 70 and at least one fan blade 72 arranged on the contact support 70, wherein the movable contact 711 comprises at least one contact end matched with the fixed contact;
when the contact system is switched from a closed state to an open state, the movable contact component 7 rotates, and in the rotating direction of the movable contact component 7, the fan blade 72 is positioned behind the contact end, so that the arc generated by separating the contact end from the fixed contact is fanned into the arc extinguish chamber 4.
Preferably, the contact system comprises a moving contact assembly 7 and at least two static contacts, one static contact is a load end contact 3, and the other static contact is a power end contact; the movable contact assembly 7 includes a contact support 70 pivotally disposed, a movable contact 711 fixedly disposed on the contact support 70, and at least one blade 72 disposed on the contact support 70, wherein the movable contact 711 includes two contact ends respectively disposed at two ends thereof, which are a first contact end and a second contact end respectively;
when the contact system is switched from a closed state to an open state, the movable contact component 7 rotates, and in the rotating direction of the movable contact component 7, the fan blade 72 is positioned behind the contact end matched with the power end contact, so that the arc generated by separating the contact end from the power end contact is fanned into the arc extinguish chamber 4.
Preferably, each group of the contact systems comprises a moving contact assembly 7 and two fixed contacts, one fixed contact is a load end contact 3, and the other fixed contact is a power end contact; the movable contact assembly 7 comprises a contact support 70 which is pivotally arranged, a movable contact 711 which is fixedly arranged on the contact support 70, and a fan blade 72 which is arranged on the contact support 70; the first contact end and the second contact end protrude outside the radial side of the contact support 70, respectively, and the fan blades 72 are disposed on the radial side of the contact support 70.
Preferably, each group of the contact systems comprises a moving contact assembly 7 and three static contacts matched with the moving contact assembly 7, wherein the three static contacts are a load end contact 3, a first power end contact 6 and a second power end contact 1 respectively; the first contact end and the second contact end respectively protrude out of the radial side surface of the contact support 70, and the two fan blades 72 are arranged on the radial side surface of the contact support 70 and respectively correspond to the first contact end and the second contact end;
when the contact system is in a double-switching state, the first contact end is located between the load end contact 3 and the first power end contact 6, one blade 72 is located between the first contact end and the first power end contact 6, the second contact end is located between the load end contact 3 and the second power end contact 1, and the other blade 72 is located between the second contact end and the second power end contact 1.
Preferably, the first power terminal contact 6, the load terminal contact 3 and the second power terminal contact 1 are sequentially arranged outside the radial side of the contact support 70 and at three vertices of a triangle;
when the contact system is in a double-switching state, the moving contact component 7 rotates towards the direction D1, the moving contact 711 conducts the load end contact 3 and the second power end contact 1, and the contact system enters a second power switching-on state; when the contact system is in a double-switching state, the moving contact assembly 7 rotates towards the direction D2, the moving contact 711 conducts the load end contact 3 and the first power end contact 6, and the contact system enters a first power switching-on state; the direction D1 is opposite to the direction D2.
Preferably, the movable contact assembly 7 includes a pair of V-shaped movable contacts 711, a pair of V-shaped spring strips 710, a contact support 70 and a limiting shaft 73, which are oppositely disposed, the two V-shaped spring strips 710 are respectively disposed on two sides of the two V-shaped movable contacts 711, two ends of each V-shaped spring strip 710 respectively press two ends of one movable contact 711, and the limiting shaft 73 penetrates through and limits the V-shaped movable contacts 711, the V-shaped spring strips 710 and the contact support 70.
Preferably, the contact support 70 includes a mounting groove 700 disposed thereon, and the middle portion of the V-shaped movable contact 711 and the middle portion of the V-shaped spring plate 710 are disposed in the mounting groove 700.
Preferably, the fan blade 72 includes a fan blade connecting portion 720 and a fan blade portion 721 respectively disposed at two ends thereof, one end of the fan blade connecting portion 720 is connected to the contact support 70, the other end is connected to one end of the fan blade portion 721, and the other end of the fan blade portion 721 is provided with a fan blade avoiding groove 722 for avoiding a static contact.
Preferably, the fan blades 72 and the contact support 70 are of an integral structure; alternatively, the fan blades 72 may be removably attached to the contact support 70.
Preferably, the arc extinguishing chamber 4 includes two arc extinguishing walls 40 arranged oppositely, and a first grid set 410, a second grid set 411, a third grid set 412 and a fourth grid set 413 arranged between the two arc extinguishing walls 40 in sequence, where each grid set includes a plurality of arc extinguishing grid pieces 42 arranged side by side at intervals; the first grid set 410 and the second grid set 411 are arranged between the first power end contact 6 and the load end contact 3, the second grid set 411 and the third grid set 412 are respectively arranged at two sides of the load end contact 3, and the third grid set 412 and the fourth grid set 413 are arranged between the load end contact 3 and the second power end contact 1.
Preferably, the arc-extinguishing grid 42 is of a U-shaped structure as a whole, and includes a grid beam 421 and grid legs 420, two ends of the grid beam 421 are respectively connected to one grid leg 420 in a bending manner, the grid beam 421 and the two grid legs 420 enclose an arc-extinguishing groove 424 with an open end, an arc-extinguishing slit 423 is arranged in the middle of the grid beam 421, and one end of the arc-extinguishing slit 423 is communicated with the arc-extinguishing groove 424.
Preferably, the arc extinguish chamber 4 includes an upper arc extinguish chamber 4a and a lower arc extinguish chamber 4b which are symmetrically arranged, the lower end of the upper arc extinguish chamber 4a is arranged opposite to the upper end of the lower arc extinguish chamber 4b, a first grid group 410 and a second grid group 411 are arranged in the upper arc extinguish chamber 4a, and a third grid group 412 and a fourth grid group 413 are arranged in the lower arc extinguish chamber 4 b.
The utility model discloses a rotation type air-blast arc control device, with the help of the power of movable contact subassembly when rotatory, make the flabellum that sets up on the contact support swing rapidly, in the arc extinguishing chamber was gone into to the electric arc fan that the fan moves the air current and produce contact jaw and static contact separation, effectively accelerated the removal rate of electric arc to the efficiency that electric arc was extinguished has been improved, moreover the utility model discloses a rotation type air-blast arc control device only needs to carry out small change, ingenious, the low cost of structure to the movable contact subassembly of current structure.
In addition, the first grid sheet group is used for extinguishing electric arcs generated when the moving contact is separated from the first power supply end contact, the second grid sheet group and the third grid sheet group are used for extinguishing electric arcs generated when the moving contact is separated from the load end contact from different directions, and the fourth grid sheet group is used for extinguishing electric arcs generated when the moving contact is separated from the second power supply end contact, so that the arc extinguish chamber can extinguish electric arcs generated at each position of a contact system; and the utility model discloses an automatic change-over switch, it can be according to opening angle, the gas vent position of moving contact, and the position of grid piece group and the inclination of grid piece internal arc extinguishing grid piece in the explosion chamber are set up in a flexible way to realize best arc extinguishing and exhaust effect.
Drawings
Fig. 1 is a schematic structural view of a rotary type gas-blast arc-extinguishing device according to a second embodiment of the present invention, wherein a contact system is in a first power-supply closing state;
fig. 2 is a schematic structural diagram of a rotary air-blast arc-extinguishing device according to a second embodiment of the present invention, at least illustrating the airflow path generated by the fan blade when the contact system is switched from the first power-supply closing state to the double-split switching state;
fig. 3 is a schematic structural diagram of a rotary type gas-blast arc extinguishing device according to a second embodiment of the present invention, wherein a contact system is in a double-brake state.
Fig. 4 is a side projection view of a movable contact assembly of a rotary air blast arc extinguishing device according to a second embodiment of the present invention;
fig. 5 is a schematic perspective view of a moving contact assembly of a rotary arc-quenching device according to a second embodiment of the present invention;
fig. 6 is a schematic perspective view of a contact support of a rotary gas-blast arc extinguishing device according to a second embodiment of the present invention;
fig. 7 is a schematic structural view of a first embodiment of the arc extinguishing chamber of the present invention;
fig. 8 is a schematic structural view of the arc extinguishing grid of the present invention;
fig. 9 is a schematic structural diagram of a rotary type gas-blast arc-extinguishing device of the present invention, in which an arc-extinguishing chamber adopts the structure of the second embodiment;
fig. 10 is a schematic structural view of the housing of the present invention;
fig. 11 is a schematic structural view of a second embodiment of the arc extinguishing chamber of the present invention;
fig. 12 is a schematic view of a rotary type gas blast arc extinguishing apparatus according to a third embodiment of the present invention, in which a contact system is in a closed state;
fig. 13 is a schematic view of a rotary type gas blast arc extinguishing apparatus according to a third embodiment of the present invention, in which a contact system is in an off state.
Detailed Description
The following description will further describe the embodiments of the rotary type gas-blast arc extinguishing apparatus according to the present invention with reference to the embodiments shown in fig. 1 to 10. The rotary type gas blast arc extinguishing apparatus of the present invention is not limited to the description of the following embodiments.
The utility model discloses a rotary type gas-blast arc-extinguishing device, which comprises at least one group of contact systems, wherein each group of contact systems is correspondingly matched with a group of arc-extinguishing chambers 4; each group of the contact systems comprises a moving contact component 7 and at least one fixed contact; the movable contact assembly 7 comprises a contact support 70 arranged in a pivoting manner, a movable contact 711 fixedly arranged on the contact support 70 and at least one fan blade 72 arranged on the contact support 70, wherein the movable contact 711 comprises at least one contact end matched with the fixed contact;
when the contact system is switched from a closed state to an open state, the movable contact component 7 rotates, and in the rotating direction of the movable contact component 7, the fan blade 72 is positioned behind the contact end, so that the arc generated by separating the contact end from the fixed contact is fanned into the arc extinguish chamber 4.
The utility model discloses a rotation type air-blast arc control device, with the help of the power of moving contact subassembly 7 when rotatory, make flabellum 72 swing, in the arc fan that the contact jaw of moving contact and static contact separation produced was gone into explosion chamber 4 to the fan-moving air current, effectively accelerated the removal rate of electric arc to the efficiency that electric arc was extinguished has been improved, moreover the utility model discloses a rotation type air-blast arc control device only needs to carry out small change, ingenious, the low cost of structure to the moving contact subassembly of current structure.
It should be pointed out that, for better realization the utility model discloses a rotation type air-blast arc control device's arc extinguishing performance also makes flabellum 72 produce the air current of inciting the electric arc as far as possible, the utility model discloses a rotation type air-blast arc control device uses with energy storage operating device cooperation best, just also can improve the rotational speed when moving contact subassembly 7 switches.
Preferably, the contact system comprises a moving contact assembly 7 and at least two static contacts, one static contact is a load end contact 3, and the other static contact is a power end contact; the movable contact assembly 7 includes a contact support 70 pivotally disposed, a movable contact 711 fixedly disposed on the contact support 70, and at least one blade 72 disposed on the contact support 70, wherein the movable contact 711 includes two contact ends respectively disposed at two ends thereof, which are a first contact end and a second contact end respectively; when the contact system is switched from a closed state to an open state, the movable contact component 7 rotates, and in the rotating direction of the movable contact component 7, the fan blade 72 is positioned behind the contact end matched with the power end contact, so that the arc generated by separating the contact end from the power end contact is fanned into the arc extinguish chamber 4.
The following is a first embodiment of the rotary type gas-blast arc extinguishing apparatus of the present invention.
The rotary type gas-blast arc-extinguishing device comprises at least one group of contact systems, wherein each group of contact systems is correspondingly matched with one group of arc-extinguishing chambers 4 arranged on one side of the contact systems; each group of the contact systems comprises a moving contact component 7, a load end contact 3 and a power end contact; the movable contact assembly 7 comprises a contact support 70 which is pivotally arranged, a movable contact 711 which is fixedly arranged on the contact support 70, and a fan blade 72 which is arranged on the contact support 70; the moving contact 711 includes a first contact end and a second contact end respectively disposed at two ends of the moving contact 711, the first contact end and the second contact end respectively protrude outside a radial side surface of the contact support 70, and the fan blade 72 is disposed on the radial side surface of the contact support 70; the moving contact assembly 7 rotates rapidly, when the contact system is switched from a closed state to an open state, in the rotating direction of the moving contact assembly 7, the fan blade 72 is located at the rear side of the contact end matched with the power end contact, and the arc generated by separating the contact end from the power end contact is fanned into the arc extinguish chamber 4.
Specifically, the first contact end is matched with the power end contact, the second contact end is matched with the load end contact 3, the moving contact 711 drives the first contact end to be closed in contact with the power end contact and the second contact end to be closed with the load end contact 3 at the same time, or the first contact end is disconnected from the power end contact and the second contact end is disconnected from the load end contact 3 at the same time.
The rotary type gas blast arc extinguishing device of the present embodiment is suitable for a switching apparatus that realizes only the on/off function of a single power supply.
Fig. 1-3 show a second embodiment of the rotary type gas-blast arc-extinguishing device according to the present invention.
The rotary type gas-blast arc-extinguishing device comprises at least one group of contact systems, wherein each group of contact systems is correspondingly matched with one group of arc-extinguishing chambers arranged on one side of the contact systems; each group of the contact systems comprises a moving contact component 7 and three static contacts matched with the moving contact component 7, wherein the three static contacts are a load end contact 3, a first power end contact 6 and a second power end contact 1 respectively; the movable contact assembly 7 comprises a contact support 70 which is pivotally arranged, a movable contact 711 which is fixedly arranged on the contact support 70, and two fan blades 72 which are arranged on the contact support 70; the moving contact 711 includes a first contact end and a second contact end respectively disposed at two ends of the moving contact 711, the first contact end and the second contact end respectively protrude outside a radial side surface of the contact support 70, and the two blades 72 are disposed on the radial side surface of the contact support 70 and respectively correspond to the first contact end and the second contact end; when the contact system is in a double-switching state, the first contact end is located between the load end contact 3 and the first power end contact 6, one blade 72 is located between the first contact end and the first power end contact 6, the second contact end is located between the load end contact 3 and the second power end contact 1, and the other blade 72 is located between the second contact end and the second power end contact 1.
Preferably, as shown in fig. 1 to 3, the first power supply terminal contact 6, the load terminal contact 3 and the second power supply terminal contact 1 are arranged in sequence outside the radial side of the contact support 70 and at the three vertices of a triangle; when the contact system is in a double-switching state, the moving contact component 7 rotates towards the direction D1, the moving contact 711 conducts the load end contact 3 and the second power end contact 1, and the contact system enters a second power switching-on state; when the contact system is in a double-switching state, the movable contact assembly 7 rotates towards the direction D2, the movable contact 711 conducts the load end contact 3 and the first power end contact 6, and the contact system enters a first power closing state.
Specifically, as shown in fig. 1-3, the first power supply end contact 6, the load end contact 3, and the second power supply end contact 1 are sequentially disposed on a circumference outside of a radial side surface of the contact holder 70, the first power supply end contact 6 and the second power supply end contact 1 are respectively disposed above and below the contact holder 70, the load end contact 3 is disposed on the left side of the contact holder 70 and located between the first power supply end contact 6 and the second power supply end contact 1, and the arc extinguish chamber 4 is disposed on the left side of the contact system and is matched with the contact system; as shown in fig. 3, the contact system is in a double-split-brake state, the first contact end (the upper end of the movable contact 711) is located between the load end contact 3 and the first power end contact 6, the upper fan blade 72 is located between the first contact end and the first power end contact 6, the second contact end (the lower end of the movable contact 711) is located between the load end contact 3 and the second power end contact 1, and the lower fan blade 72 is located between the second contact end and the second power end contact 1; as shown in fig. 3, the contact system is in a double-switching state, and when the movable contact assembly 7 rotates in a direction D1 (counterclockwise), the contact system enters a second power switching state, where the first contact end is electrically connected to the load end contact 3, and the second contact end is electrically connected to the second power end contact 1; as shown in fig. 3, the contact system is in a double-switching state, and when the movable contact assembly 7 rotates in a direction D2 (clockwise), the contact system enters a first power-supply switching state, as shown in fig. 1-2, the first contact end is electrically connected to the first power end contact 6, and the second contact end is electrically connected to the load end contact 3. As shown in fig. 2, the contact system is in a first power-on state, the movable contact assembly 7 rapidly rotates in a direction D1 (counterclockwise), the first contact end is separated from the first power end contact to generate an arc, the fan blade 72 on the upper side rapidly swings to the left due to the driving of the contact support 70 to generate an airflow flowing to the left, and the arc generated by the separation of the first contact end and the first power end contact is fanned into the arc-extinguishing chamber 4 (the arrow shown in fig. 2 indicates the airflow generated by the fan blade 72), so that the arc-extinguishing efficiency is significantly improved; similarly, when the contact system is in the second power-on state, the movable contact assembly 7 rotates in the direction D2 (clockwise direction), and the fan blade 72 on the lower side also fans the arc generated by the separation of the second contact end from the second power end contact into the arc extinguish chamber 4.
Preferably, a gap is formed between the fan blade 72 and the corresponding end of the movable contact 711.
The rotary type gas-blast arc-extinguishing device of the embodiment is suitable for an automatic transfer switching apparatus (as shown in fig. 1-3), and the automatic transfer switching apparatus has three working states: a double-switch state, wherein neither the first power supply nor the second power supply is conducted; the first power supply is in a switching-on state, and the first power supply and the load are conducted; and the second power supply is in a switching-on state, and the second power supply and the load are conducted.
Preferably, as shown in fig. 4 to 6, it is an embodiment of the movable contact assembly 7.
The movable contact assembly 7 includes a pair of V-shaped movable contacts 711 disposed oppositely, a pair of V-shaped spring strips 710, a contact support 70 and a limiting shaft 73, the two V-shaped spring strips 710 are disposed on two sides of the two V-shaped movable contacts 711 respectively, two ends of each V-shaped spring strip 710 press two ends of one movable contact 711 respectively, and the limiting shaft 73 penetrates through and limits the V-shaped movable contacts 711, the V-shaped spring strips 710 and the contact support 70. Further, as shown in fig. 6, the contact support 70 includes a mounting groove 700 disposed thereon, and as shown in fig. 4-5, the middle portion of the V-shaped movable contact 711 and the middle portion of the V-shaped spring plate 710 are disposed in the mounting groove 700. Furthermore, a moving contact partition board is arranged in the assembly groove, extends outwards from the bottom surface of the assembly groove and is used for separating two moving contacts 711 which are arranged oppositely, so that a certain gap exists between the end parts of the two moving contacts 711, and the moving contacts are convenient to be in plug-in fit with a load end contact and a power end contact.
Preferably, as shown in fig. 6, the fan blade 72 includes a blade connecting portion 720 and a fan blade portion 721 respectively disposed at two ends thereof, one end of the blade connecting portion 720 is connected to the contact holder 70, the other end is connected to one end of the fan blade portion 721, and the other end of the fan blade portion 721 is provided with a blade avoiding groove 722 for avoiding the power source terminal contact. Further, the fan 72 and the contact support 70 are integrally formed, or the fan 72 and the contact support 70 are detachably connected.
As shown in fig. 1-3, 7-8, is a first embodiment of the arc chute 4.
The arc extinguish chamber 4 comprises two arc extinguish walls 40 which are oppositely arranged, and a first grid group 410, a second grid group 411, a third grid group 412 and a fourth grid group 413 which are sequentially arranged between the two arc extinguish walls 40; each grid group comprises a plurality of arc extinguishing grid pieces 42 arranged side by side at intervals; the first grid set 410 and the second grid set 411 are arranged between the first power end contact 6 and the load stub 3, the second grid set 411 and the third grid set 412 are arranged on two sides of the load end contact 3 in decibels, and the third grid set 412 and the fourth grid set 413 are arranged between the load end contact 3 and the second power end contact 1. Furthermore, the distance between two adjacent groups of grid pieces is larger than the distance between two adjacent grid pieces in the same grid piece group.
Specifically, as shown in fig. 1 to 3, the upper end of the arc extinguish chamber 4 is arranged opposite to the first power end contact 6, the lower end of the arc extinguish chamber is arranged opposite to the second power end contact 1, the load end contact 3 is arranged in the middle of the arc extinguish chamber 4, and the second grid set 411 and the third grid set 412 are respectively arranged above and below the load end contact 3.
Preferably, as shown in fig. 3, when the contact system is in a double-split-gate state, the upper fan blade 72 is opposite to the first grid set 410, the lower fan blade 72 is opposite to the fourth grid set 413, the upper end of the movable contact 711 is located between the first grid set 410 and the second grid set 411, and the lower end of the movable contact 711 is located between the third grid set 412 and the fourth grid set 413.
Preferably, as shown in fig. 8, the arc-extinguishing grid 42 is integrally formed into a U-shaped structure, and includes a grid beam 421 and grid legs 420, two ends of the grid beam 421 are respectively connected to one grid leg 420 in a bent manner, the grid beam 421 and the two grid legs 420 enclose an arc-extinguishing groove 424 with one open end, an arc-extinguishing slit 423 is disposed in the middle of the grid beam 421, one end of the arc-extinguishing slit 423 is communicated with the arc-extinguishing groove 424, and each grid leg 420 is provided with a grid projection 422 connected to the arc-extinguishing wall 40.
As illustrated in fig. 9 and 11, a second embodiment of the arc chute 4.
The arc chute 4 of the present embodiment differs from the previous embodiment in that:
the arc extinguish chamber 4 comprises an upper arc extinguish chamber 4a and a lower arc extinguish chamber 4b which are oppositely arranged, the lower end of the upper arc extinguish chamber 4a is oppositely arranged with the upper end of the lower arc extinguish chamber 4b, a first grid group 410 and a second grid group 411 are arranged in the upper arc extinguish chamber 4a, and a third grid group 412 and a fourth grid group 413 are arranged in the lower arc extinguish chamber 4 b; the upper arc extinguishing chamber 4a comprises two upper arc extinguishing walls which are oppositely arranged, the lower arc extinguishing chamber 4b comprises two lower arc extinguishing walls which are oppositely arranged, and each arc extinguishing wall 40 consists of one upper arc extinguishing wall and one lower arc extinguishing wall.
As shown in fig. 1-3 and 9, the present invention also discloses an automatic transfer switching device, which comprises the rotary type gas blast arc extinguishing device of the second embodiment.
As shown in fig. 1, the automatic transfer switching device further includes a base 2 and a housing 5, the rotary arc-quenching device is disposed in a cavity formed by the base 2 and the housing 5, the load-side contact 3 and the second power-side contact 1 are fixed on the base 2 and located at two ends of the base 2, respectively, and the first power-side contact 6 is fixed on the housing 5.
Preferably, as shown in fig. 1, the casing 5 is provided with a first exhaust port 501 and a second exhaust port 502 respectively engaged with the first vane group 410 and the second vane group 411. Further, a third exhaust port and a fourth exhaust port respectively corresponding to and matching with the third grid set 412 and the fourth grid set 413 are disposed at the bottom of the base 2.
Preferably, as shown in fig. 1-3, 9 and 11, the housing 5 comprises at least one upper assembly chamber and the base 2 comprises at least one lower assembly chamber, the upper assembly chamber and the lower assembly chamber cooperating one-to-one to form a chamber for assembling the contact system and the arc extinguishing chamber. Further, as shown in fig. 11, the side wall of the upper assembling cavity is provided with an upper limiting groove 51, the side wall of the lower assembling cavity is provided with a lower limiting groove (not shown in the figure), the upper end of the arc extinguish chamber 4 is in limiting fit with the upper limiting groove 51, and the lower end of the arc extinguish chamber is in limiting fit with the lower limiting groove.
Preferably, as shown in fig. 9, the arc extinguish chamber 4 includes an upper arc extinguish chamber 4a and a lower arc extinguish chamber 4b, the upper end of the upper arc extinguish chamber 4a is in limit fit with the upper limit groove 51, the lower end of the upper arc extinguish chamber is abutted against the upper end of the lower arc extinguish chamber 4b, and the lower end of the lower arc extinguish chamber 4b is in limit fit with the lower limit groove.
Fig. 12 to 13 show a third embodiment of the rotary type gas quenching apparatus according to the present invention.
The rotary type gas-blast arc-extinguishing device of the embodiment comprises at least one group of contact systems, wherein each group of contact systems is correspondingly matched with one group of arc-extinguishing chambers 4; each group of contact systems comprises a movable contact component 7 and a fixed contact, the movable contact component 7 comprises a contact support 70 arranged in a pivoting manner, a movable contact 711 fixedly arranged on the contact support 70 and a fan blade 72 arranged on the contact support 70, and the movable contact 711 comprises a contact end matched with the fixed contact; when the contact system is switched from a closed state to an open state, the movable contact component 7 rotates, and in the rotating direction of the movable contact component 7, the fan blade 72 is positioned behind the contact end, so that the arc generated by separating the contact end from the fixed contact is fanned into the arc extinguish chamber 4.
Specifically, as shown in fig. 12, the contact system is in a closed state, the contact end of the movable contact 711 protrudes out of the radial side surface of the contact support 70 and is electrically connected to the fixed contact in a contact manner, the fan blade 72 is disposed on the radial side surface of the contact support 70 and is located on the right side of the contact end, the arc extinguishing chamber 4 is located on the upper left side of the contact support 70, the movable contact assembly 7 rotates in the direction D1 (counterclockwise direction), the contact system enters the closed state shown in fig. 13, the contact end of the movable contact 711 is separated from the fixed contact, and the fan blade 72 swings left to fan an arc generated by the separation of the contact end and the fixed contact into the arc.
The foregoing is a more detailed description of the present invention, taken in conjunction with the specific preferred embodiments thereof, and it is not intended that the invention be limited to the specific embodiments shown and described. To the utility model belongs to the technical field of ordinary technical personnel, do not deviate from the utility model discloses under the prerequisite of design, can also make a plurality of simple deductions or replacement, all should regard as belonging to the utility model discloses a protection scope.
Claims (12)
1. A rotary type gas-blast arc-extinguishing device is characterized by comprising at least one group of contact systems, wherein each group of contact systems is correspondingly matched with one group of arc-extinguishing chambers (4); each group of the contact systems comprises a moving contact component (7) and at least one fixed contact; the moving contact component (7) comprises a contact support (70) which is arranged in a pivoting way, a moving contact (711) which is fixedly arranged on the contact support (70) and at least one fan blade (72) which is arranged on the contact support (70), wherein the moving contact (711) comprises at least one contact end which is matched with the fixed contact;
when the contact system is switched from a closed state to an open state, the movable contact component (7) rotates, and in the rotating direction of the movable contact component (7), the fan blade (72) is positioned behind the contact end, so that electric arcs generated by separating the contact end from the fixed contact are fanned into the arc extinguish chamber (4).
2. The rotary gas-blast arc-quenching device of claim 1, wherein: the contact system comprises a moving contact component (7) and at least two static contacts, wherein one static contact is a load end contact (3), and the other static contact is a power end contact; the movable contact component (7) comprises a contact support (70) which is arranged in a pivoting way, a movable contact (711) which is fixedly arranged on the contact support (70) and at least one fan blade (72) which is arranged on the contact support (70), wherein the movable contact (711) comprises two contact ends which are respectively arranged at two ends of the movable contact, namely a first contact end and a second contact end;
when the contact system is switched from a closed state to an open state, the movable contact component (7) rotates, in the rotating direction of the movable contact component (7), the fan blade (72) is positioned behind the contact end matched with the power end contact, and the electric arc generated by separating the contact end from the power end contact is fanned into the arc extinguish chamber (4).
3. The rotary gas-blast arc-quenching device of claim 2, wherein: each group of the contact systems comprises a moving contact component (7) and two static contacts, wherein one static contact is a load end contact (3), and the other static contact is a power end contact; the movable contact component (7) comprises a contact support (70) which is arranged in a pivoting way, a movable contact (711) which is fixedly arranged on the contact support (70) and a fan blade (72) which is arranged on the contact support (70); the first contact end and the second contact end respectively protrude outside the radial side surface of the contact support (70), and the fan blades (72) are arranged on the radial side surface of the contact support (70).
4. The rotary gas-blast arc-quenching device of claim 2, wherein: each group of the contact systems comprises a moving contact component (7) and three static contacts matched with the moving contact component (7), wherein the three static contacts are a load end contact (3), a first power end contact (6) and a second power end contact (1) respectively; the first contact end and the second contact end respectively protrude out of the radial side surface of the contact support (70), and the two fan blades (72) are arranged on the radial side surface of the contact support (70) and respectively correspond to the first contact end and the second contact end;
when the contact system is in a double-brake state, the first contact end is located between the load end contact (3) and the first power end contact (6), one fan blade (72) is located between the first contact end and the first power end contact (6), the second contact end is located between the load end contact (3) and the second power end contact (1), and the other fan blade (72) is located between the second contact end and the second power end contact (1).
5. The rotary gas-blast arc-quenching device of claim 4, wherein: the first power end contact (6), the load end contact (3) and the second power end contact (1) are sequentially arranged on the outer side of the radial side surface of the contact support (70) and are positioned at three vertexes of a triangle;
when the contact system is in a double-switching state, the movable contact component (7) rotates towards the direction D1, the movable contact (711) conducts the load end contact (3) and the second power end contact (1), and the contact system enters a second power switching-on state; when the contact system is in a double-switching state, the movable contact component (7) rotates towards the direction D2, the movable contact (711) conducts the load end contact (3) and the first power end contact (6), and the contact system enters a first power switching-on state; the direction D1 is opposite to the direction D2.
6. A rotary gas-blast arc-quenching device according to any of claims 2-5, characterized in that: the movable contact component (7) comprises a pair of V-shaped movable contacts (711), a pair of V-shaped spring pieces (710), a contact support (70) and a limiting shaft (73), wherein the V-shaped movable contacts (711), the V-shaped spring pieces (710), the contact support (70) and the limiting shaft (73) are oppositely arranged, the two V-shaped spring pieces (710) are respectively arranged on two sides of the two V-shaped movable contacts (711), two ends of each V-shaped spring piece (710) respectively press two ends of one movable contact (711), and the limiting shaft (73) penetrates through and limits the V-shaped movable contacts (711), the V-shaped spring pieces.
7. The rotary gas-blast arc-quenching device of claim 6, wherein: the contact support (70) comprises an assembly groove (700) arranged on the contact support, and the middle parts of the V-shaped moving contact (711) and the V-shaped spring piece (710) are arranged in the assembly groove (700).
8. A rotary gas-blast arc-quenching device according to any of claims 1 to 5, characterized in that: the flabellum (72) are including setting up flabellum connecting portion (720) and flabellum fan portion (721) at its both ends respectively, and flabellum connecting portion (720) one end links to each other with contact support (70), and the other end links to each other with flabellum fan portion (721) one end, and flabellum fan portion (721) other end is equipped with and is used for dodging the flabellum of static contact and dodges groove (722).
9. The rotary gas-blast arc-quenching device of claim 8, wherein: the fan blade (72) and the contact support (70) are of an integrated structure; alternatively, the fan blades (72) are removably connected to the contact support (70).
10. A rotary gas-blast arc-quenching device according to claim 4 or 5, characterized in that: the arc extinguishing chamber (4) comprises two arc extinguishing walls (40) which are arranged oppositely, and a first grid group (410), a second grid group (411), a third grid group (412) and a fourth grid group (413) which are arranged between the two arc extinguishing walls (40) in sequence, wherein each grid group comprises a plurality of arc extinguishing grid pieces (42) which are arranged side by side at intervals; the first grid group (410) and the second grid group (411) are arranged between the first power end contact (6) and the load end contact (3), the second grid group (411) and the third grid group (412) are respectively arranged on two sides of the load end contact (3), and the third grid group (412) and the fourth grid group (413) are arranged between the load end contact (3) and the second power end contact (1).
11. The rotary gas-blast arc-quenching device of claim 10, wherein: arc extinguishing bars piece (42) wholly become U font structure, including bars piece crossbeam (421) and bars piece foot (420), bars piece crossbeam (421) both ends respectively with a bars piece foot (420) bend and link to each other, bars piece crossbeam (421) and two bars piece feet (420) enclose into one end open-ended arc extinguishing groove (424), bars piece crossbeam (421) middle part is equipped with arc extinguishing slit (423), arc extinguishing slit (423) one end is linked together with arc extinguishing groove (424).
12. The rotary gas-blast arc-quenching device of claim 10, wherein: arc extinguishing chamber (4) including last arc extinguishing chamber (4a) and lower arc extinguishing chamber (4b) that the symmetry set up, go up arc extinguishing chamber (4a) lower extreme and arc extinguishing chamber (4b) upper end down and set up relatively, go up and be equipped with first grid piece group (410) and second grid piece group (411) in arc extinguishing chamber (4a), be equipped with third grid piece group (412) and fourth grid piece group (413) in arc extinguishing chamber (4b) down.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922441624.8U CN211828540U (en) | 2019-12-30 | 2019-12-30 | Rotary type air-blast arc-extinguishing device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922441624.8U CN211828540U (en) | 2019-12-30 | 2019-12-30 | Rotary type air-blast arc-extinguishing device |
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| CN211828540U true CN211828540U (en) | 2020-10-30 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023142184A1 (en) * | 2022-01-26 | 2023-08-03 | 浙江奔一电气有限公司 | Rotary switch moving contact assembly for physically interrupting electric arc |
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2019
- 2019-12-30 CN CN201922441624.8U patent/CN211828540U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023142184A1 (en) * | 2022-01-26 | 2023-08-03 | 浙江奔一电气有限公司 | Rotary switch moving contact assembly for physically interrupting electric arc |
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