Contact box, bus device of switchgear and air-insulated medium-voltage switchgear

Abstract

The utility model belongs to the technical field of electrics, and particularly relates to a contact box, a switch equipment bus device and air insulation medium voltage switch equipment, the contact box comprises a box body and a fixing piece, the box body is provided with a fixing plate, and the fixing plate is provided with a through hole; the fixing piece is connected with the fixing plate and comprises a first fixing block and a second fixing block, the first fixing block comprises a first groove and a first limiting column arranged in the first groove in a protruding mode, and the second fixing block comprises a second groove and a second limiting column arranged in the second groove in a protruding mode. When the first fixing block is connected with the second fixing block, the first limiting column and the second limiting column are oppositely arranged; the branch copper bar is provided with a first limiting hole and a second limiting hole, when the branch copper bar is clamped by the first fixing block and the second fixing block, the branch copper bar is clamped between the first groove and the second groove, the first limiting column is inserted into the first limiting hole, and the second limiting column is inserted into the second limiting hole. It is guaranteed that the branch copper bars cannot be loosened and twisted, and accidents are reduced.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of electrical technology, and particularly relates to a contact box, a switch device bus device and an air-insulated medium-voltage switch device. BACKGROUND

[0002] A switch cabinet is a very important device in a power system, and a large number of components, insulating parts and conductive parts, such as circuit breakers, contact boxes and copper bars, are arranged in the switch cabinet.

[0003] At present, most of the tubular bus bars are used to replace the traditional flat bus bars, so that the copper consumption can be greatly saved.

[0004] However, when the existing tubular bus bar is fixed in the contact box, the front and rear positions and the left and right positions of the tubular bus bar cannot be ensured, and the tubular bus bar cannot be clamped, so that loosening and twisting are prone to occur under the action of electric force, and the hidden danger of accidents is increased. Content of the utility model

[0005] The application aims to solve the problem in the prior art that the front and rear positions and the left and right positions of the tubular bus bar cannot be ensured, and the tubular bus bar cannot be clamped, so that loosening and twisting are prone to occur under the action of electric force, and the hidden danger of accidents is increased.

[0006] The first aspect of the application provides a contact box used for a switch device, which comprises: a box body, which is a sleeve type structure, one end of which is open, and the other end of which is provided with a fixed plate, the middle part of the fixed plate is provided with a through hole for inserting a branch copper bar into the inside of the box body; a fixing part connected with the fixed plate, the fixing part comprises oppositely arranged first and second fixing blocks, the first and second fixing blocks are detachably connected, the first fixing block comprises a first recess and a first limiting column, the first limiting column is protrudingly arranged in the first recess, the second fixing block comprises a second recess and a second limiting column, the second limiting column is protrudingly arranged in the second recess, when the first and second fixing blocks are connected with each other: the first and second limiting columns are oppositely arranged; wherein the branch copper bar is provided with oppositely arranged first and second limiting holes, when the first and second fixing blocks clamp the branch copper bar, the branch copper bar is clamped between the first and second recesses, and the first limiting column is inserted into the first limiting hole, and the second limiting column is inserted into the second limiting hole.

[0007] In an example embodiment of the present application, the first fixing block is provided with a first mounting hole and a limiting protrusion corresponding to the first mounting hole; the second fixing block is provided with a second mounting hole; when the first fixing block is connected with the second fixing block, the limiting protrusion is inserted into the second mounting hole, and a fastener is passed through the first mounting hole and the second mounting hole to connect the first fixing block and the second fixing block.

[0008] In an example embodiment of the present application, the first fixing block further comprises a plurality of first fixing platforms arranged at intervals, the first fixing platforms are arranged on the first groove and protrude towards the second fixing block, and the first fixing platforms are in contact with the outer wall of the branch copper bar; the second fixing block further comprises a plurality of second fixing platforms arranged at intervals, the second fixing platforms are arranged on the second groove and protrude towards the first fixing block, and the second fixing platforms are in contact with the outer wall of the branch copper bar; when the first fixing block is connected with the second fixing block, the first fixing platforms and the second fixing platforms are arranged around the outer wall of the branch copper bar.

[0009] In an example embodiment of the present application, the first limiting column is arranged on one side of the first fixing platform away from the first groove; the second limiting column is arranged on one side of the second fixing platform away from the second groove, and the second limiting column is arranged opposite to the first limiting column.

[0010] In an example embodiment of the present application, a plurality of positioning holes are arranged on the fixing plate, and the positioning holes are arranged at intervals; the fixing member is provided with a plurality of fixing columns on the side facing the box body, and the fixing columns correspond to the positioning holes one by one.

[0011] In an example embodiment of the present application, a plurality of heat dissipation holes penetrating the box body in the axial direction are arranged on the fixing member, the heat dissipation holes communicate the inside of the box body with the outside, and the heat dissipation holes and the positioning holes are arranged at intervals.

[0012] In an example embodiment of the present application, the contact box further comprises a protective cover arranged on the side of the fixing plate away from the box body, the protective cover comprises a first protective plate, a second protective plate and a cover body, the first protective plate and the second protective plate are arranged opposite and parallel to each other, one end of the cover body is connected with the first protective plate, and the other end of the cover body is connected with the second protective plate.

[0013] In an exemplary embodiment of the present application, the contact box further comprises a mounting flange provided on the side of the box body with the opening, the mounting flange being provided with a third mounting hole, and the mounting flange is mounted on the switch device through the third mounting hole.

[0014] The second aspect of the present application provides a busbar device of a switch device, comprising: a branch copper bar comprising a branch busbar and a tube body sleeved outside the branch busbar, the tube body being provided with a first limiting hole and a second limiting hole; the contact box of any one of the above, the tube body being clamped between the first fixed block and the second fixed block, the first limiting column being inserted into the first limiting hole, and the second limiting column being inserted into the second limiting hole.

[0015] The third aspect of the present application provides an air-insulated medium voltage switch device, comprising the busbar device of the switch device as described above.

[0016] The contact box, the busbar device of the switch device and the air-insulated medium voltage switch device of the present application have at least the following beneficial effects:

[0017] The contact box of the present application comprises a box body and a fixing member, the box body is provided with a fixed plate, the fixed plate is connected with the fixing member, the fixing member comprises a first fixed block and a second fixed block arranged oppositely, the first fixed block is provided with a first groove and a first limiting column, the first limiting column is protrusively arranged in the first groove; the second fixed block is provided with a second groove and a second limiting column, the second limiting column is protrusively arranged in the second groove, and the first limiting column and the second limiting column are arranged oppositely when the first fixed block and the second fixed block are connected with each other. The branch copper bar is provided with a first limiting hole and a second limiting hole, and the branch copper bar is arranged between the first groove and the second groove when the first fixed block and the second fixed block clamp the branch copper bar, and the first limiting column is inserted into the first limiting hole and the second limiting column is inserted into the second limiting hole, so as to limit the movement of the branch copper bar in the horizontal direction and the vertical direction, to ensure the position of the branch copper bar and the contact box fixed, to avoid the branch copper bar loosened and twisted under the action of electric force, and to reduce the accident rate.

[0018] Other characteristics and advantages of the present application will become apparent from the following detailed description, or will be learned by practice of the present application.

[0019] It should be understood that the above general description and the following detailed description are only exemplary and explanatory, and cannot limit the present application. BRIEF DESCRIPTION OF DRAWINGS

[0020] The accompanying drawings, which are incorporated into and form a part of the specification, illustrate preferred embodiments of the present application and, together with the description, serve to explain the principles of the application. It is pointed out that the drawings herein are only a few embodiments of the present application and that other drawings can be obtained by those skilled in the art without creative effort based on these drawings.

[0021] Figure 1 A structure schematic diagram showing that the fixing member is fixed to the box body is shown.

[0022] Figure 2 A front view structure schematic diagram showing that the branch copper bar is fixed to the contact box is shown.

[0023] Figure 3 A rear view structure schematic diagram showing that the branch copper bar is fixed to the contact box is shown.

[0024] Figure 4 A structure schematic diagram of the box body is shown.

[0025] Figure 5 A structure schematic diagram showing that the branch copper bar is clamped to the fixing member is shown.

[0026] Figure 6 A structure schematic diagram of the fixing member is shown.

[0027] Figure 7 A structure schematic diagram of the first fixing block is shown.

[0028] Figure 8 A structure schematic diagram of the second fixing block is shown.

[0029] Figure 9 A structure schematic diagram showing that the fixing plate is provided with a heat dissipation hole and a positioning hole is shown.

[0030] Figure 10 A structure schematic diagram showing that the mounting flange is connected to the box body is shown.

[0031] Figure 11 A three-dimensional structure schematic diagram showing that the branch copper bar is connected to the contact box is shown.

[0032] Explanation of reference signs:

[0033] 100, contact box;

[0034] 110, box body; 111, fixing plate; 1110, through hole; 1111, positioning hole; 1112, heat dissipation hole;

[0035] 120, fixing piece; 121, first fixing block; 1210, first groove; 1211, first limiting column; 1212, first mounting hole; 1213, limiting protrusion; 1214, first fixing table; 122, second fixing block; 1220, second groove; 1221, second limiting column; 1222, second mounting hole; 1223, second fixing table; 123, fixing column; 124, ventilation hole;

[0036] 130, protective cover; 131, first protective plate; 132, second protective plate; 133, cover body;

[0037] 140, mounting flange; 141, third mounting hole;

[0038] 200, branch copper bar. DETAILED DESCRIPTION

[0039] Example implementations are now described with reference to the drawings; however, these descriptions are not intended to limit the scope of the example implementations as described, but are intended to provide example examples of the example implementations. The example implementations can be implemented in various forms and should not be construed as limited to the examples set forth herein; rather, these examples are provided so that this disclosure will be thorough and complete, and will fully convey the concept of the example implementations to those skilled in the art.

[0040] In this application, the terms "first", "second", etc. are used only for descriptive purposes and should not be construed as indicating or implying relative importance or an indicated number of technical features. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "a plurality of" is two or more, unless otherwise explicitly specified and limited.

[0041] In this application, unless otherwise explicitly specified and limited, the terms "assembly", "connection" and the like should be understood broadly, for example, can be fixedly connected, can be detachably connected, or integrated; can be mechanically connected, can be electrically connected; can be directly connected, can be indirectly connected through an intermediate medium, can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances.

[0042] Moreover, the described features, structures, or characteristics can be combined in any suitable manner in one or more embodiments. In the following description, numerous specific details are provided to give a thorough understanding of embodiments of the application. One skilled in the relevant art will recognize, however, that the application can be practiced without one or more of the specific details, or with other methods, components, materials, and so forth. In other instances, well-known structures, devices, implementations, or operations are not shown or described in detail to avoid obscuring aspects of the application.

[0043] Figure 1 Fig. 1 shows a structure schematic diagram of a fixing member fixed on a box body according to an embodiment of the application. Figure 2 Fig. 2 shows a front view structure schematic diagram of a branch copper bar fixed on a contact box according to an embodiment of the application. Figure 3 Fig. 3 shows a rear view structure schematic diagram of a branch copper bar fixed on a contact box according to an embodiment of the application. Figure 4 Fig. 4 shows a structure schematic diagram of a box body according to an embodiment of the application. Figure 5 Fig. 5 shows a structure schematic diagram of a branch copper bar clamped on a fixing member according to an embodiment of the application. Figure 6 Fig. 6 shows a structure schematic diagram of a fixing member according to an embodiment of the application. Figure 7 Fig. 7 shows a structure schematic diagram of a first fixing block according to an embodiment of the application. Figure 8 Fig. 8 shows a structure schematic diagram of a second fixing block according to an embodiment of the application.

[0044] Referring to Figure 1 According to an embodiment of the application, a contact box 100 is provided, which is used for a switch device, and includes a box body 110 and a fixing member 120. The box body 110 can be fixedly connected with the fixing member 120 through a screw or a bolt, and the fixing member 120 can be used to clamp a branch copper bar 200, so as to fix the branch copper bar 200 on the box body 110, as shown in Figure 2

[0045] The box body 110 is a sleeve type cylindrical structure, which is hollow inside, so as to facilitate the insertion of the branch copper bar 200 into the inside of the box body 110.

[0046] In some embodiments of the application, referring to Figure 3 and Figure 4 The one end of the box body 110 is open, and the other end is provided with a fixing plate 111. The middle part of the fixing plate 111 is provided with a through hole 1110, which can be designed according to the shape of the branch copper bar 200, such as a circular shape, an elliptical shape, a triangular shape, and the like.

[0047] ​In some embodiments of the present application, the fixing member 120 can be connected to the fixing plate 111 by screws or bolts, so as to ensure that the branch copper bar 200 is fixed to the contact box 100.

[0048] As shown in Figure 5 to Figure 8 The fixing member 120 includes a first fixing block 121 and a second fixing block 122. The first fixing block 121 and the second fixing block 122 can be connected to each other or separated from each other.

[0049] When the first fixing block 121 and the second fixing block 122 are connected to each other, the first fixing block 121 and the second fixing block 122 form a through hole (not shown in the figure), which can clamp the branch copper bar 200 and limit the rotation of the branch copper bar 200. When the first fixing block 121 and the second fixing block 122 are separated from each other, the branch copper bar 200 is taken out from between the first fixing block 121 and the second fixing block 122, so as to replace or maintain the branch copper bar 200.

[0050] In some embodiments of the present application, as shown in Figure 5 and Figure 7 The first fixing block 121 includes a first recess 1210 and a first limiting column 1211. The inner wall surface of the first recess 1210 can be used to contact the outer wall surface of the branch copper bar 200, so as to clamp the branch copper bar 200. The first limiting column 1211 is arranged on the inner wall surface of the first recess 1210 and protrudes.

[0051] As shown in Figure 5 and Figure 8 The second fixing block 122 includes a second recess 1220 and a second limiting column 1221. The inner wall surface of the second recess 1220 can be used to contact the outer wall surface of the branch copper bar 200, so as to clamp the branch copper bar 200. The second limiting column 1221 is arranged on the inner wall surface of the second recess 1220 and protrudes.

[0052] As shown in Figure 1 When the first fixing block 121 and the second fixing block 122 are connected to each other, the first limiting column 1211 and the second limiting column 1221 are arranged opposite to each other.

[0053] In some embodiments of the present application, the branch copper bar 200 is provided with a first limiting hole (not shown in the figure) and a second limiting hole (not shown in the figure). The first limiting hole and the second limiting hole are respectively arranged on opposite sides of the branch copper bar 200.

[0054] It can be understood that when the first fixed block 121 and the second fixed block 122 clamp the branch copper bar 200, the branch copper bar 200 is clamped between the first groove 1210 and the second groove 1220, the first groove 1210 and the second groove 1220 form the through hole, and the first groove 1210 and the second groove 1220 clamp the branch copper bar 200.

[0055] In addition, the first limiting column 1211 is inserted into the first limiting hole, and the second limiting column 1221 is inserted into the second limiting hole, so as to limit the displacement of the branch copper bar 200 in the circumferential direction, the radial direction and the axial direction, avoid loosening and twisting of the branch copper bar 200 under the action of electric force, ensure good centering degree of the branch copper bar 200, and reduce the accident rate.

[0056] In some embodiments of the present application, referring to Figure 6 to Figure 8 The first fixed block 121 is provided with a first mounting hole 1212 penetrating in the radial direction of the box body 110 and a limiting protrusion 1213 protruding from the first fixed block 121. The limiting protrusion 1213 is arranged to extend in the radial direction of the box body 110. The second fixed block 122 is provided with a second mounting hole 1222. When the first fixed block 121 and the second fixed block 122 are connected, the limiting protrusion 1213 on the first fixed block 121 is inserted into the second mounting hole 1222, and a fastener passes through the first mounting hole 1212 and the second mounting hole 1222 to connect the first fixed block 121 and the second fixed block 122.

[0057] It can be understood that by inserting the limiting protrusion 1213 into the second mounting hole 1222, the connection tightness between the first fixed block 121 and the second fixed block 122 can be improved, the movement of the first fixed block 121 and the second fixed block 122 in the horizontal direction can be avoided, and the stability of the first fixed block 121 and the second fixed block 122 can be ensured.

[0058] In addition, the fastener can adopt a structure such as a bolt or a screw, as long as it can connect the first fixed block 121 and the second fixed block 122 together.

[0059] In some embodiments of the present application, referring to Figure 7 The first fixed block 121 further includes a plurality of first fixed platforms 1214 arranged at intervals. The first fixed platform 1214 is arranged on the first groove 1210 and protrudes towards the second fixed block 122, and the first fixed platform 1214 is an arc-shaped structure which is fitted with the outer wall surface of the branch copper bar 200.

[0060] Correspondingly, referring to Figure 8As shown, the second fixing block 122 further comprises a plurality of second fixing platforms 1223 arranged at intervals. The second fixing platforms 1223 are arranged on the second groove 1220 and protrude towards the first fixing block 121. The second fixing platforms 1223 are arc-shaped structures and are in close contact with the outer wall of the branch copper bar 200.

[0061] As shown in Figure 6 As shown, when the first fixing block 121 and the second fixing block 122 are connected to each other, the first fixing platform 1214 and the second fixing platform 1223 are connected, so that the first fixing platform 1214 and the second fixing platform 1223 are arranged around the branch copper bar 200, and the first fixing platform 1214 and the second fixing platform 1223 are arranged in close contact with the outer wall of the branch copper bar 200, so as to ensure the clamping effect on the branch copper bar 200 and avoid the branch copper bar 200 from shaking on the fixing member 120.

[0062] In some embodiments of the present application, as shown in Figure 1 and Figure 6 The first limiting column 1211 is arranged on a first fixing platform 1214, and the second limiting column 1221 is arranged on a second fixing platform 1223, so as to ensure that the first limiting column 1211 and the second limiting column 1221 can be inserted into the first limiting hole and the second limiting hole, and ensure the fixing effect on the branch copper bar 200.

[0063] Figure 9 A structure diagram of the fixing plate provided by the embodiments of the present application is shown.

[0064] In some embodiments of the present application, as shown in Figure 9 The fixing plate 111 further comprises a positioning hole 1111, which is arranged at intervals with the through hole 1110. The positioning hole 1111 can be designed as a circular hole, an oval hole or a hole with other shapes.

[0065] In some embodiments of the present application, as shown in Figure 1 , Figure 6 and Figure 9 The fixing member 120 can be provided with a fixing column 123, which protrudes towards one side of the box body 110 and corresponds to the positioning hole 1111. The fixing column 123 can be inserted into the positioning hole 1111, so as to prevent the relative movement of the fixing member 120 in the radial direction and the circumferential direction of the box body 110 and ensure the stability of the fixing member 120 and the box body 110.

[0066] It can be understood that when the fixing column 123 is inserted into the positioning hole 1111, the fixing column 123 can be fixed in the positioning hole 1111 by screws, bolts or other structures, further ensuring the fixing effect of the fixing member 120 and the fixing plate 111, and avoiding displacement between each other.

[0067] It is worth mentioning that when the branch copper bar 200 is inserted into the box body 110, the fixing member 120 and the fixing plate 111 are arranged in close contact with each other, ensuring the fixing effect between the fixing member 120 and the fixing plate 111.

[0068] In some embodiments of the present application, as shown in Figure 9 The fixing plate 111 is provided with a plurality of positioning holes 1111 arranged at intervals. The fixing member 120 is provided with a plurality of fixing columns 123 arranged at intervals, and the fixing columns 123 correspond one-to-one to the positioning holes 1111.

[0069] As shown in Figure 6 and Figure 9 The fixing member 120 can be inserted into the plurality of positioning holes 1111 on the fixing plate 111 by the plurality of fixing columns 123, so as to realize the fixed connection between the fixing member 120 and the fixing plate 111. The plurality of fixing columns 123 and the plurality of positioning holes 1111 can further limit the displacement between the fixing member 120 and the fixing plate 111, ensure the limiting effect between the fixing member 120 and the fixing plate 111, and better ensure that the branch copper bar 200 will not be deflected under external force.

[0070] For example, the fixing plate 111 is provided with four positioning holes 1111, two of which are located on one side of the axis of symmetry of the box body 110, and the other two are located on the other side of the axis of symmetry of the box body 110, i.e. two pairs of positioning holes 1111 are arranged symmetrically with respect to the axis of symmetry of the box body 110. By arranging two positioning holes 1111 on opposite sides of the axis of symmetry of the box body 110, the stress on the fixing member 120 can be evenly distributed, avoiding tilting under external force, and further ensuring the tightness of the connection between the fixing member 120 and the box body 110. Correspondingly, the first fixing block 121 can be provided with two fixing columns 123, the second fixing block 122 can be provided with two fixing columns 123, and the four fixing columns 123 are inserted into the four positioning holes 1111 to fix the fixing member 120 on the fixing plate 111.

[0071] In some embodiments of the present application, as shown in Figure 9 The fixing plate 111 is provided with a plurality of heat dissipation holes 1112 arranged at intervals between the positioning holes 1111, so as to avoid blocking the heat dissipation holes 1112 when the fixing member 120 is attached to the fixing plate 111.

[0072] It can be understood that by opening the heat dissipation holes 1112 on the fixed plate 111, the branch bus in the branch copper bar 200 can be well cooled inside the box body 110, and the occurrence of accidents can be reduced.

[0073] In addition, the heat dissipation holes 1112 can be circular, oval, waist round holes, etc., but are not limited thereto.

[0074] For example, the heat dissipation holes 1112 include circular holes and waist round holes. It can be understood that the larger the opening area, the better the heat dissipation effect.

[0075] In some embodiments of the present application, referring to Figure 9 As shown, the plurality of heat dissipation holes 1112 and the plurality of positioning holes 1111 are arranged in an annular array on the fixed plate 111. On the one hand, when the fixing member 120 is attached to one side of the fixed plate 111, the heat dissipation holes 1112 can avoid the fixing member 120, ensuring the heat dissipation effect inside the box body 110. On the other hand, through the array arrangement, the heat inside the box body 110 can be uniformly released to the outside, further ensuring the heat dissipation effect.

[0076] In some embodiments of the present application, referring to Figure 6 As shown, the fixing member 120 is further provided with a plurality of ventilation holes 124. The opening direction of the ventilation hole 124 is the axial direction of the box body 110, that is, the ventilation hole 124 can communicate the inside of the box body 110 with the outside, so as to increase the ventilation area of the box body 110 with the outside and improve the heat dissipation effect inside the contact box 100.

[0077] For example, the first fixed block 121 is provided with one ventilation hole 124, and the second fixed block 122 is provided with three ventilation holes 124. The ventilation hole 124 can communicate with the through hole 1110 on the box body 110, so as to increase the convection effect of the airflow between the outside and the inside of the box body 110.

[0078] Figure 10 A structure schematic diagram of the mounting flange and the box body connection provided by the embodiments of the present application is shown.

[0079] In some embodiments of the present application, referring to Figure 10 As shown, the contact box 100 further includes a protective cover 130, which is arranged on the side of the fixed plate 111 away from the box body 110, and can coat the fixing member 120 to effectively protect the fixing member 120 from discharging between phases.

[0080] Among them, please continue to refer to Figure 10As shown, the protective cover 130 comprises a first protective plate 131, a second protective plate 132 and a cover body 133. The first protective plate 131 and the second protective plate 132 are oppositely and parallelly arranged, and the first protective plate 131 and the second protective plate 132 are arranged in a similar triangular shape. One end of the cover body 133 is connected with the first protective plate 131, and the other end of the cover body 133 is connected with the second protective plate 132, that is, the first protective plate 131 is connected with the second protective plate 132 through the cover body 133, and the first protective plate 131, the second protective plate 132 and the cover body 133 can cover the fixing piece 120, thereby effectively preventing the fixing piece 120 from discharging between the fixing pieces.

[0081] It should be noted that the cover body 133 can adopt a circular arc structure, a rectangular structure or other shapes, as long as it can connect the first protective plate 131 and the second protective plate 132 and cover the fixing piece 120.

[0082] For example, the cover body 133 is a semicircular arc structure, the side edges of the cover body 133 are connected with the first protective plate 131 and the second protective plate 132 respectively, the cover body 133 is connected with the side of the fixing plate 111 away from the box body 110, and the cover body 133 is arranged along the outer edge of the fixing plate 111 to cover the fixing piece 120, thereby effectively preventing the fixing piece 120 from discharging between the fixing pieces.

[0083] In some embodiments of the present application, the height of the fixing plate 111 is higher than the height of the box body 110, and the opposite ends of the fixing plate 111 are connected with the first protective plate 131 and the second protective plate 132 respectively, so that the fixing plate 111 can further prevent the fixing piece 120 from discharging between the fixing pieces.

[0084] In some embodiments of the present application, the box body 110 can be formed by an automatic pressure condensation gel molding process of epoxy resin, and the box body 110 is formed under the optimal process parameters determined by using a CAE analysis software.

[0085] In some embodiments of the present application, please continue to refer to Figure 10 As shown, the contact box 100 further comprises a mounting flange 140. The mounting flange 140 is arranged on the side of the box body 110 provided with the opening, and a plurality of third mounting holes 141 are arranged at the mounting flange 140, so that the contact box 100 can be mounted on a contact box mounting plate structure in the switchgear through the third mounting holes 141.

[0086] In some embodiments of the present application, the number of the third mounting holes 141 can be four, but is not limited to this. In addition, the third mounting holes 141 can be threaded holes, and the mounting flange 140 can be fixed on the contact box mounting plate structure in the switchgear through screws, rivets or other fixing structures.

[0087] It is worth mentioning that the box body 110, the fixing member 120, the protective cover 130 and the mounting flange 140 are all axisymmetric figures.

[0088] Figure 11 A three-dimensional structure schematic diagram of the branch copper bar connected with the contact box is shown.

[0089] The application also provides a busbar device of a switch device, which refers to Figure 11 As shown in the figure, the busbar device comprises the branch copper bar 200 and the contact box 100. The branch copper bar 200 comprises a branch busbar (not shown in the figure) and a pipe body (not shown in the figure) arranged outside the branch busbar, and the pipe body can adopt a cylindrical structure. The branch copper bar 200 is inserted into the box body 110 through the through hole 1110 in the middle of the box body 110.

[0090] The first limiting hole and the second limiting hole are arranged on the pipe body, and when the pipe body is clamped between the first fixing block 121 and the second fixing block 122, the first limiting column 1211 is inserted into the first limiting hole, and the second limiting column 1221 is inserted into the second limiting hole, so as to limit the displacement of the pipe body in the circumferential direction, the radial direction and the axial direction, thereby avoiding loosening and twisting of the branch copper bar 200 under the action of electric force, and further ensuring the good centering degree of the branch copper bar 200 and reducing the accident rate.

[0091] The application also provides an air-insulated medium-voltage switch device, which comprises the busbar device of the switch device.

[0092] In the description of the present specification, the description referring to the terms “some embodiments”, “exemplarily”, and the like means that the specific features, structures, materials or characteristics described in connection with the embodiments or examples are contained in at least one embodiment or example of the present application. In the present specification, the exemplary description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any appropriate manner in any one or more embodiments or examples. In addition, the person skilled in the art can combine and combine the different embodiments or examples described in the present specification and the features of the different embodiments or examples without contradiction.

[0093] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limiting the present application, and the person skilled in the art can make changes, modifications, replacements and variations to the above embodiments within the scope of the present application. Therefore, any changes or modifications made in accordance with the claims and the specification of the present application shall be within the scope of the present application.

Claims

1. A contact box for a switchgear, characterized in that The contact box comprises: The box body is of a sleeve structure, one end of which is open, and the other end is provided with a fixing plate, the middle part of the fixing plate is provided with a through hole for inserting a branch copper bar into the inside of the box body; The fixing member is connected with the fixing plate, the fixing member comprises oppositely arranged first and second fixing blocks, the first and second fixing blocks are detachably connected, the first fixing block comprises a first groove and a first limiting column, the first limiting column is protrusively arranged in the first groove, the second fixing block comprises a second groove and a second limiting column, the second limiting column is protrusively arranged in the second groove, and when the first and second fixing blocks are connected with each other, the first limiting column is arranged opposite to the second limiting column; Wherein, the branch copper bar is provided with oppositely arranged first and second limiting holes, when the first and second fixing blocks clamp the branch copper bar, the branch copper bar is clamped between the first and second grooves, and the first limiting column is inserted into the first limiting hole, and the second limiting column is inserted into the second limiting hole.

2. The contact box of claim 1, wherein, The first fixing block is provided with a first mounting hole and a limiting protrusion corresponding to the first mounting hole; The second fixing block is provided with a second mounting hole; When the first and second fixing blocks are connected, the limiting protrusion is inserted into the second mounting hole, and a fastener passes through the first and second mounting holes to connect the first and second fixing blocks.

3. The contact cartridge of claim 1, wherein, The first fixing block further comprises a plurality of first fixing platforms arranged at intervals, the first fixing platforms are arranged on the first groove and protrusively arranged towards the second fixing block, and the first fixing platforms are in close contact with the outer wall surface of the branch copper bar; The second fixing block further comprises a plurality of second fixing platforms arranged at intervals, the second fixing platforms are arranged on the second groove and protrusively arranged towards the first fixing block, and the second fixing platforms are in close contact with the outer wall surface of the branch copper bar; When the first and second fixing blocks are connected, the first and second fixing platforms are arranged around the outer wall surface of the branch copper bar.

4. The contact box of claim 3, wherein, The first limiting column is arranged on one side of the first fixing platform away from the first groove; The second limiting column is arranged on one side of the second fixing platform away from the second groove, and the second limiting column is arranged opposite to the first limiting column.

5. The contact cartridge of claim 1, wherein, A plurality of positioning holes are arranged on the fixing plate and arranged at intervals; A plurality of fixing columns are arranged on one side of the fixing member facing the box body, and the fixing columns correspond to the positioning holes one by one.

6. The contact box of claim 5, wherein, A plurality of heat dissipation holes are arranged on the fixing member and penetrate the box body in the axial direction, the heat dissipation holes communicate the inside of the box body with the outside, and the heat dissipation holes are arranged at intervals with the positioning holes.

7. The contact cartridge of claim 1, wherein, The contact box further comprises: A protective cover is arranged on the side of the fixing plate away from the box body, and the protective cover comprises a first protective plate, a second protective plate and a cover body. The first protective plate and the second protective plate are arranged oppositely and parallelly, one end of the cover body is connected with the first protective plate, and the other end of the cover body is connected with the second protective plate.

8. The contact cartridge of claim 7, wherein, The contact box further comprises: A mounting flange is arranged on the side of the box body with the opening, and a third mounting hole is arranged on the mounting flange. The mounting flange is mounted on the switch device through the third mounting hole.

9. A busbar arrangement of a switchgear, characterized in that Comprise: The branch copper bar comprises a branch bus and a pipe body sleeved outside the branch bus, and the pipe body is provided with a first limiting hole and a second limiting hole; The contact box of any one of claims 1 to 8, the pipe body is clamped between the first fixed block and the second fixed block, the first limiting column is inserted into the first limiting hole, and the second limiting column is inserted into the second limiting hole.

10. An air-insulated medium voltage switchgear, characterized by The busbar device comprises the switch device of claim 9.

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