Busbar chamber arc-striking assembly and electric cabinet
The present invention discloses a busbar chamber arc-striking assembly, which includes a main frame forming a space configured to accommodate a busbar chamber sleeve, wherein the main frame includes a back plate, and the back plate is arranged on a side of the busbar chamber sleeve opposite to the busbar; and a first arc-striking plate which is parallel to and spaced apart from the back plate of the main frame, wherein the first arc-striking plate is installed to extend between adjacent busbar chamber sleeves. The busbar chamber arc-striking assembly according to the present invention can quickly strike the arc at the initial stage of arc generation, cut off the arc, reduce the arc energy, and ignite the arc itself until the arc is extinguished.
1 . An electric cabinet comprising:
a plurality of busbars;
a plurality of busbar chamber sleeves, wherein each busbar chamber sleeve of the plurality of busbar chamber sleeves is connected to a corresponding bus bar of the plurality of busbars; and
a busbar chamber arc-striking assembly, wherein the busbar chamber arc-striking assembly comprises:
a main frame forming a space configured to accommodate the plurality of busbar chamber sleeves, wherein the main frame comprises a back plate, and the back plate is arranged on a side of each busbar chamber sleeve of the plurality of busbar chamber sleeves opposite to the corresponding busbar of the plurality of busbars; and
a first arc-striking plate parallel to and spaced apart from the back plate of the main frame, wherein the first arc-striking plate is installed to extend between adjacent busbar chamber sleeves of the plurality of busbar chamber sleeves.
2 . The electric cabinet according to claim 1 , wherein the first arc-striking plate is close to a center of the busbar chamber sleeve of the plurality of busbar chamber sleeves in a thickness direction of the first arc-striking plate.
3 . The electric cabinet according to claim 2 , wherein in the thickness direction of the first arc-striking plate, a distance between the first arc-striking plate and the center of each busbar chamber sleeve of the plurality of busbar chamber sleeves is less than or equal to 10 mm.
4 . The electric cabinet according to claim 1 , wherein a width of the first arc-striking plate is designed such that when the busbar chamber arc-striking assembly is installed in place, the first arc-striking plate is close to and spaced apart from the adjacent busbar chamber sleeves on both sides of the first arc-striking plate.
5 . The electric cabinet according to claim 1 , wherein the main frame further comprises a top plate and two side plates, the top plate and each of the two side plates are connected with the back plate.
6 . The electric cabinet according to claim 5 , wherein the busbar chamber arc-striking assembly further comprises:
an internal partition plate, wherein the internal partition plate is arranged in a space formed by the main frame and arranged close to and parallel to the back plate, a width of the internal partition plate spans a distance between the two side plates of the main frame, and the internal partition plate is arranged in a thickness direction between the back plate and the first arc-striking plate; and
an external partition plate, wherein the external partition plate is arranged outside the space formed by the main frame and arranged close to and parallel to the back plate, a width of the external partition plate spans the distance between the two side plates of the main frame.
7 . The electric cabinet according to claim 6 , wherein the busbar chamber arc-striking assembly further comprises:
a second arc-striking plate, wherein the second arc-striking plate is arranged between the first arc-striking plate and the internal partition plate and parallel with the back plate, wherein the second arc-striking plate has a width greater than a width of the first arc-striking plate.
8 . The electric cabinet according to claim 7 , wherein the busbar chamber arc-striking assembly further comprises:
a side arc-striking plate, wherein the side arc-striking plate is arranged parallel to the internal partition plate and is close to one of the two side plates in a width direction.
9 . The electric cabinet according to claim 8 , wherein the busbar chamber arc-striking assembly further comprises:
an intermediate arc-striking plate, wherein the intermediate arc-striking plate is arranged between the first arc-striking plate and the second arc-striking plate and parallel to the back plate, and is installed to extend between the adjacent busbar chamber sleeves of the plurality of busbar chamber sleeves.
10 . The electric cabinet according to claim 9 , wherein the intermediate arc-striking plate comprises two to three of the intermediate arc-striking plate parallel to and spaced apart from each other.
11 . The electric cabinet according to claim 10 , wherein the first arc-striking plate and the two to three of the intermediate arc-striking plate are respectively designed such that respective edges of each of the first arc-striking plate and the two to three of the intermediate arc-striking plate are at a same distance in respective width directions from outer contours of the adjacent busbar chamber sleeves of the plurality of busbar chamber sleeves.
12 . The electric cabinet according to claim 11 , wherein the first arc-striking plate, the second arc-striking plate, the side arc-striking plate and each of the two to three of the intermediate arc-striking plate are attached to a respective reinforcing plate.
13 . The electric cabinet according to claim 11 , wherein the busbar chamber arc-striking assembly further comprises a plurality of mounting pieces, wherein the first arc-striking plate, the second arc-striking plate, the side arc-striking plate, each of the two to three of the intermediate arc-striking plate, the internal partition plate and the external partition plate are mounted to the main frame through a respective mounting piece of the plurality of mounting pieces.
14 . The electric cabinet according to claim 13 , wherein the busbar chamber arc-striking assembly further comprises a plurality of spacer rings, wherein each of the spacer rings are formed in an annular shape and have a fixed thickness, and are configured to be sleeved on the respective mounting piece of the plurality of mounting pieces in different numbers so as to adjust a distance between two components in the busbar chamber arc-striking assembly, wherein each of the two components is selected from a group consisting of the first arc-striking plate, one of the two to three of the intermediate arc-striking plate, the second arc-striking plate, the side arc-striking plate, the internal partition plate, the back plate of the main frame, and the external partition plate.