CN209823274U

CN209823274U - Novel structure for changing electric field distribution of 35KV switch cabinet

Info

Publication number: CN209823274U
Application number: CN201920738738.6U
Authority: CN
Inventors: 乔小刚; 汪令生
Original assignee: Shaanxi Chint Intelligent Electric Co Ltd
Current assignee: Shaanxi Chint Intelligent Electric Co Ltd
Priority date: 2019-05-21
Filing date: 2019-05-21
Publication date: 2019-12-20
Anticipated expiration: 2029-05-21

Abstract

The utility model discloses a novel change 35KV cubical switchboard electric field distribution's structure, mainly include frame, well contact box, side contact box, circuit breaker, left side shell and right side shell, the inboard right rear portion fixed mounting in frame top has the C seat of meeting electricity, and C meets electricity seat middle part fixed mounting has C looks insulation frame, C looks insulation frame right-hand member and frame right side wall fixed connection, C meets electricity seat middle part fixed mounting has C looks electricity board, the inboard left part fixed mounting in frame top has B to meet the electricity seat, and B meets electricity seat middle part fixed mounting has B looks insulation frame, B looks insulation frame left end fixed connection frame left side wall. The utility model has reasonable structural design, and the technical proposal improves the structure of the contact box by changing the electric field distribution structure of the 35KV switch cabinet to ensure that the air clear distance between phases reaches the safe range; the former interphase insulating plate is cancelled, so that the operation safety is improved; simple structure, the reliability is strong, guarantees personal safety, avoids loss of property.

Description

Novel structure for changing electric field distribution of 35KV switch cabinet

Technical Field

The utility model relates to a cubical switchboard specifically is a novel structure that changes 35KV cubical switchboard electric field distribution.

Background

The main function of the switch cabinet is to open and close, control and protect electric equipment in the process of power generation, power transmission, power distribution and electric energy conversion of an electric power system. The components in the switch cabinet mainly comprise a circuit breaker, an isolating switch, a load switch, an operating mechanism, a mutual inductor, various protection devices and the like. The classification methods of the switch cabinets are various, for example, the switch cabinets can be divided into movable switch cabinets and fixed switch cabinets by the installation mode of the circuit breaker; or according to different cabinet body structures, the cabinet body can be divided into an open type switch cabinet, a metal closed switch cabinet and a metal closed armored switch cabinet; the high-voltage switch cabinet and the low-voltage switch cabinet can be divided according to different voltage grades.

The switch cabinet is used for receiving electric energy and distributing the electric energy, wherein electric field distribution determines an important index of product safe operation, if the safe distance does not reach the standard, the condition of interphase discharge can be caused, the reliability of power utilization is reduced, property loss is caused slightly, even personal injury and death can be caused in serious conditions, the prior switch cabinet body increases the edge strength by adding the insulating plate at interphase, and finally the interphase short circuit is developed when the damp in the cabinet discharges relative to the insulating plate.

Disclosure of Invention

An object of the utility model is to provide a novel change 35KV cubical switchboard electric field distribution's structure to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme:

a novel structure for changing the electric field distribution of a 35KV switch cabinet mainly comprises an outer frame, a middle contact box, side contact boxes, a circuit breaker, a left side shell and a right side shell, wherein a C-phase connection electric seat is fixedly arranged at the right rear part of the inner side of the top end of the outer frame, a C-phase insulation frame is fixedly arranged at the middle part of the C-phase connection electric seat, a right end of the C-phase insulation frame is fixedly connected with the right side wall of the outer frame, a C-phase connection electric plate is fixedly arranged at the middle part of the C-phase connection electric seat, a B-phase connection electric seat is fixedly arranged at the left part of the inner side of the top end of the outer frame, a B-phase insulation frame is fixedly arranged at the middle part of the B-phase connection electric seat, a left side wall of the outer frame is fixedly connected with the outer frame, a phase connection electric seat is fixedly arranged at the inner wall of the left front part of, the middle part of the A-phase electricity connecting seat is fixedly provided with an A-phase electricity connecting plate, the inner wall of the right side of the outer frame is fixedly provided with middle contact boxes which are vertically symmetrical, the middle part of each middle contact box is screwed with a pressure connecting column, a middle electricity connecting plate is arranged between the pressure connecting column and the middle contact box in a pressure connection manner, the middle electricity connecting plate positioned at the upper part is fixedly connected with the B-phase electricity connecting plate through bolts, the right side wall of the outer frame is symmetrically provided with front and back symmetrical side contact boxes by taking the central line of the middle contact box as a normal line, the middle parts of the inner sides of the two side contact boxes are screwed with pressure connecting columns, side electricity connecting plates are arranged between the pressure connecting columns and the side contact boxes in a pressure connection manner, the end parts of the side electricity connecting plates are fixedly provided with lap plates through bolts, the top ends of the lap plates positioned at the upper front part are fixedly connected with the right ends of the A-phase electricity connecting plates, the lower part of the lap joint plate is fixedly provided with a side copper bar, the bottom end of the side copper bar and the bottom end of the middle connection plate are respectively provided with a circuit breaker through bolts, the top end of the circuit breaker is fixedly connected with the bottom inner wall of the outer frame bottom, the left part of the top end of the circuit breaker is fixedly provided with a power supply plate, the left side wall of the power supply plate is fixedly connected with the outer wall of the lower part of the left side of the outer frame, the left side wall of the outer frame is provided with a cover plate matched with the power supply plate through bolts, the outer wall.

As a further aspect of the present invention: the side connects the equal fixed mounting of electroplax left side wall and well electroplax left side wall to have a spacer pin, well contact box and side contact box inner wall all seted up with spacer pin complex spacing groove.

As a further aspect of the present invention: and an electricity outlet insulating frame matched with the electricity outlet plate is fixedly arranged on the inner wall of the left side of the outer frame.

As a further aspect of the present invention: two of longitudinal symmetry are fixedly provided with a communicating frame between the side walls of the left end of the side contact box, two of the left end of the middle contact box are fixedly provided with a communicating frame between the side walls of the left end of the middle contact box, and the distance between each electric connection seat and the electricity outlet plate is increased by adopting the side contact box and the middle contact box which are electrically communicated in pairs.

As a further aspect of the present invention: a meet the electricity seat mutually, B meet the electricity seat and C meet the electricity seat and outside three phase current difference electric connection, wherein A meet the electricity seat mutually, B meet the electricity seat and C meet adopt the lap joint board to prolong distance each other between the electricity seat, adopt A to meet the electricity board mutually, B meet the electricity board and C meet the different shapes of electricity board, connect the electricity seat mutually, B meet the electricity seat and C meet the electricity seat and distribute different spatial position and install.

Compared with the prior art, the beneficial effects of the utility model are that:

the utility model has reasonable structural design, and the technical proposal improves the structure of the contact box by changing the electric field distribution structure of the 35KV switch cabinet to ensure that the air clear distance between phases reaches the safe range; the former interphase insulating plate is cancelled, so that the operation safety is improved; simple structure, the reliability is strong, guarantees personal safety, avoids loss of property.

Drawings

Fig. 1 is a schematic structural diagram of a novel structure for changing electric field distribution of a 35KV switch cabinet.

Fig. 2 is a structural schematic diagram of a structure right view angle for changing electric field distribution of a novel 35KV switch cabinet.

Fig. 3 is a structural schematic diagram of a main view angle between a side contact box and a connecting part thereof in a novel structure for changing the electric field distribution of the 35KV switch cabinet.

Fig. 4 is a structural schematic diagram of a right view angle between a side contact box and a connecting part thereof in a novel structure for changing the electric field distribution of the 35KV switch cabinet.

Fig. 5 is a schematic structural diagram of a top view angle of a new type of lap plate in a structure for changing electric field distribution of a 35KV switch cabinet.

In the figure: the circuit breaker comprises an outer frame 1, a circuit breaker 2, a left side shell 3, an electricity outlet plate 4, an electricity outlet insulating frame 5, an A phase connection electric seat 6, an A phase connection electric plate 7, an A phase insulating frame 8, a B phase connection electric plate 9, a B phase connection electric seat 10, a B phase insulating frame 11, a right side shell 12, a C phase insulating frame 13, a C phase connection electric seat 14, a C phase connection electric plate 15, a side contact box 16, a communication frame 17, a side connection electric plate 18, a side copper bar 19, a middle connection electric plate 20, a middle contact box 21, a lap joint plate 22, a pressure joint column 23 and a limiting pin 24.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are merely for convenience of description and for simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

In the description of the present invention, it should be noted that unless otherwise explicitly stated or limited, the terms "mounted," "connected" and "disposed" are to be construed broadly, and may for example be fixedly connected, disposed, detachably connected, disposed, or integrally connected and disposed. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Referring to fig. 1-5, in the embodiment of the present invention, a novel structure for changing electric field distribution of a 35KV switchgear mainly comprises an outer frame 1, a middle contact box 21, a side contact box 16, a circuit breaker 2, a left side housing 3 and a right side housing 12, wherein a C-phase connection base 14 is fixedly installed at the right rear portion of the inner side of the top end of the outer frame 1, a C-phase insulation frame 13 is fixedly installed at the middle portion of the C-phase connection base 14, a C-phase insulation frame 13 is fixedly installed at the right side wall of the outer frame 1, a C-phase connection electric plate 15 is fixedly installed at the middle portion of the C-phase connection base 14, a B-phase connection base 10 is fixedly installed at the left portion of the inner side of the top end of the outer frame 1, a B-phase insulation frame 11 is fixedly installed at the middle portion of the B-phase insulation frame 10, a B-phase connection electric plate 9 is fixedly installed at the left side wall of the outer frame 1, a, the middle part of the A-phase electric connecting seat 6 is fixedly provided with an A-phase insulating frame 8, the left end of the A-phase insulating frame 8 is fixedly connected with the left side wall of the outer frame 1, the middle part of the A-phase electric connecting seat 6 is fixedly provided with an A-phase electric connecting plate 7, the inner wall of the right side of the outer frame 1 is fixedly provided with middle contact boxes 21 which are vertically symmetrical, the middle parts of the middle contact boxes 21 are rotatably provided with compression posts 23, a middle electric connecting plate 20 is rotatably connected between the compression posts 23 and the middle contact boxes 21, the middle electric connecting plate 20 positioned at the upper part is fixedly connected with the B-phase electric connecting plate 9 through bolts, the right side wall of the outer frame 1 is symmetrically provided with front and back symmetrical side contact boxes 16 by taking the middle line of the middle contact box 21 as a normal line, the middle parts of the inner sides of the two side contact boxes 16 are rotatably provided with the compression posts 23, side electric connecting plates 18 are rotatably connected between the compression posts 23 and the side contact boxes 16, the ends of the side, the top end of the lapping plate 22 at the upper rear part is fixedly connected with the bottom end of the electric plate 15 through a bolt fixedly connected C, the bottom end of the side-connected electric plate 18 at the lower part is fixedly provided with a lapping plate 22 through a bolt, the bottom ends of the two lapping plates 22 at the lower part are fixedly provided with side copper bars 19, the bottom ends of the two side copper bars 19 and the bottom end of the middle-connected electric plate 20 at the lower part are respectively fixedly provided with a circuit breaker 2 through a bolt, the top end of the circuit breaker 2 is fixedly connected with the inner wall at the bottom end of the outer frame 1, the left part at the top end of the circuit breaker 2 is fixedly provided with a power outlet plate 4, the left side wall at the power outlet plate 4 is fixedly connected with the outer wall at the lower part at the left side of the outer frame 1, the cover plate matched with the.

The side connects the electroplax 18 left side wall and connects the electroplax 20 left side wall all fixed mounting with spacer pin 24, well contact box 21 and side contact box 16 inner wall all seted up with spacer pin 24 complex spacing groove.

And an electricity outlet insulating frame 5 matched with the electricity outlet plate 4 is fixedly arranged on the inner wall of the left side of the outer frame 1.

A communicating frame 17 is fixedly installed between the left end side walls of the two vertically symmetrical side contact boxes 16, a communicating frame 17 is fixedly installed between the left end side walls of the two middle contact boxes 21, and the distances between each electric connection seat and the electricity outlet plate 4 are increased by the aid of the two electrically communicated side contact boxes 16 and the middle contact boxes 21.

The A-phase electric base 6, the B-phase electric base 10 and the C-phase electric base 14 are electrically connected with an external three-phase power supply respectively, wherein the A-phase electric base 6, the B-phase electric base 10 and the C-phase electric base 14 are connected by adopting a lapping plate 22 to prolong the distance between each other, the A-phase electric plate 7, the B-phase electric plate 9 and the C-phase electric plate 15 are adopted in different shapes, and the A-phase electric base 6, the B-phase electric base 10 and the C-phase electric base 14 are distributed to different spatial positions for installation.

The utility model discloses a theory of operation is:

the utility model relates to a novel structure for changing the electric field distribution of a 35KV switch cabinet, which is used for changing the electric field distribution of the 35KV switch cabinet, thereby meeting the requirement that the inter-phase safety distance meets 300mm, improving the contact box structure, replacing the traditional contact box by two contact boxes which are connected in series, and ensuring that the distance between each electric connection seat and an electricity outlet plate 4 is more than 95mm after improvement; through the transition of the lapping plate 22, the distance between the A, B and the C-phase wire can be adjusted to be 360mm to 380mm, so that the air clear distance between each side copper bar 19 and the middle power connection plate 20 at the outlet of the branch wire can meet 300mm, an insulating plate arranged between branch buses is replaced, the discharging of the opposite insulating plate possibly generated after the branch buses are affected with damp is avoided, the interphase insulating strength is increased, the interphase short-circuit fault is greatly reduced, the insulating plate is not arranged, and the structure is simpler; the improved structure reduces the magnetic field distribution concentration of the 35KV switch cabinet, has stable structure, simple structure and strong reliability, ensures personal safety and avoids property loss.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. A novel structure for changing electric field distribution of a 35KV switch cabinet mainly comprises an outer frame (1), a middle contact box (21), a side contact box (16), a circuit breaker (2), a left side shell (3) and a right side shell (12), and is characterized in that a C connection electric seat (14) is fixedly installed at the right rear part of the inner side of the top end of the outer frame (1), a C phase insulating frame (13) is fixedly installed at the middle part of the C connection electric seat (14), a C phase insulating frame (13) is fixedly connected with the right side wall of the outer frame (1) at the right end of the C phase insulating frame (13), a C connection electric plate (15) is fixedly installed at the middle part of the C connection electric seat (14), a B connection electric seat (10) is fixedly installed at the left part of the inner side of the top end of the outer frame (1), a B phase insulating frame (11) is fixedly installed at the middle part of the B phase insulating frame (11), a B connection electric plate (9) is fixedly installed at, the inner wall of the left front part inside the outer frame (1) is fixedly provided with an A-phase electricity connecting seat (6), the middle part of the A-phase electricity connecting seat (6) is fixedly provided with an A-phase insulating frame (8), the left end of the A-phase insulating frame (8) is fixedly connected with the left side wall of the outer frame (1), the middle part of the A-phase electricity connecting seat (6) is fixedly provided with an A-phase electricity connecting plate (7), the right side inner wall of the outer frame (1) is fixedly provided with a vertically symmetrical middle contact box (21), the middle part of the middle contact box (21) is screwed with a compression post (23), the middle contact plate (20) is pressed between the compression post (23) and the middle contact box (21), the middle contact plate (20) positioned at the upper part is fixedly connected with the B-phase electricity connecting plate (9) through a bolt, the right side wall of the outer frame (1) is symmetrically provided with front and back symmetrical side contact boxes (16) by taking the central line of the middle contact box (21) as a normal, a side connection electroplax (18) is installed between a crimping post (23) and a side contact box (16) in a crimping mode, the end part of the side connection electroplax (18) is provided with a bridging plate (22) through a bolt fixed connection A, the top end of the bridging plate (22) positioned at the upper front part is connected with the right end of an electroplax (7) through a bolt fixed connection A, the top end of the bridging plate (22) positioned at the upper rear part is connected with the bottom end of an electroplax (15) through a bolt fixed connection C, the side connection electroplax (18) positioned at the lower part is provided with a bridging plate (22) through a bolt fixed connection A, the bottom end of the bridging plate (22) positioned at the lower part is fixedly provided with side copper bars (19), the bottom end of the side copper bars (19) and the bottom end of the middle connection electroplax (20) positioned at the lower part are respectively provided with a circuit breaker (2) through a bolt fixed connection, the inner, the side wall of the left end of the electricity outlet plate (4) is fixedly connected with the outer wall of the lower part of the left side of the outer frame (1), the cover plate matched with the electricity outlet plate (4) is installed on the left side wall of the outer frame (1) through bolts, the right side shell (12) is fixedly installed on the outer wall of the right side of the outer frame (1), and the left side shell (3) is fixedly installed on the outer wall of the left side of the outer frame (1).

2. The novel structure for changing the electric field distribution of the 35KV switch cabinet according to claim 1, wherein limiting pins (24) are fixedly mounted on both the left side wall of the side-connected electric board (18) and the left side wall of the middle-connected electric board (20), and limiting grooves matched with the limiting pins (24) are formed in both the inner walls of the middle contact box (21) and the side contact box (16).

3. The novel structure for changing the electric field distribution of the 35KV switch cabinet according to claim 1, wherein an electricity outgoing insulating frame (5) matched with the electricity outgoing plate (4) is fixedly installed on the inner wall of the left side of the outer frame (1).

4. The novel structure for changing the electric field distribution of the 35KV switch cabinet according to claim 1, wherein a communicating frame (17) is fixedly installed between the left side end side walls of the two vertically symmetrical side contact boxes (16), a communicating frame (17) is fixedly installed between the left side end side walls of the two middle contact boxes (21), and the distances between each electric connection seat and the power outlet board (4) are increased by adopting the side contact boxes (16) and the middle contact boxes (21) which are electrically communicated in pairs.

5. The novel structure for changing the electric field distribution of the 35KV switch cabinet according to claim 1, wherein the A-phase connection socket (6), the B-phase connection socket (10) and the C-phase connection socket (14) are electrically connected with an external three-phase power supply respectively, wherein the A-phase connection socket (6), the B-phase connection socket (10) and the C-phase connection socket (14) are connected by a lapping plate (22) to extend the distance therebetween, and the A-phase connection socket (6), the B-phase connection socket (10) and the C-phase connection socket (14) are mounted by distributing the A-phase connection socket (6), the B-phase connection socket (10) and the C-phase connection socket (14) to different spatial positions by adopting different shapes of the A-phase connection plate (7), the B-phase connection socket (9) and the C-phase connection socket.