Multifunctional contact box and vertical bus mounting structure

Abstract

The utility model relates to a multifunctional contact box and a vertical bus installation structure, the upper part of the contact box is provided with a support groove and heat dissipation holes, the lower part of the contact box is provided with a cavity, the cavity is provided with a lower opening, the support groove is provided with a communication area communicated with the cavity, the support groove is through left and right, a bus is provided with a static contact area, and the static contact area is provided with a plurality of heat dissipation holes. The bus passes through the supporting groove, is supported on the contact box and is positioned with the contact box, so that the static contact area corresponds to the communication area in position, the moving contact extends into the cavity from the lower opening and is occluded on the static contact area, and the heat dissipation holes are strip-shaped heat dissipation holes. The length of the heat dissipation hole is equal to the length of the moving contact engaged in the static contact area, or the length of the heat dissipation hole is greater than the length of the moving contact engaged in the static contact area. The contact box has the functions of supporting the bus and forming the static contact area.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of switch cabinet, especially a multifunctional contact box and vertical busbar mounting structure. BACKGROUND

[0002] Generally in the design of indoor AC metal-enclosed switchgear, the three-phase busbar system commonly relies on insulators for stable support, and the middle phase often needs to be installed in a staggered manner with the other two phases due to insulation requirements, especially in the busbar structure arranged from back to middle to front, the fulcrum of the middle phase support can only be achieved through an adapter on top or bottom, which not only significantly increases the overall width of the switchgear, but also exacerbates the complexity of on-site installation and maintenance, posing a challenge to space utilization and operational convenience.

[0003] In addition, the three-phase of ordinary indoor AC metal-enclosed switchgear is usually arranged horizontally from left to middle to right, and the electrical connection between the busbar and the static contact in the contact box is achieved through branch copper bars, which meets the basic requirement of electrical connection, but the use of branch copper bars undoubtedly increases the number of system connection points, thereby increasing the potential risk of connection reliability, such as poor contact, overheating, etc., and also increases the material cost and manufacturing cost.

[0004] Furthermore, for safety reasons, the contact box in indoor AC metal-enclosed switchgear is often designed as a fully enclosed structure to effectively isolate the potential impact of high electric fields on metal partitions and the surrounding environment. However, while this fully enclosed design ensures electrical safety, it also limits the natural convection and radiation of heat, which may cause the temperature inside the contact box to rise, affecting the long-term stable operation and service life of the equipment. SUMMARY

[0005] The utility model aims at solving the above technical problem, and provides a multifunctional contact box and vertical busbar mounting structure, which has the functions of supporting the busbar and forming the static contact area.

[0006] A multifunctional contact box, the upper part of the contact box is provided with a support groove and a heat dissipation hole, the lower part of the contact box is provided with a cavity, the cavity has a lower opening, the support groove has a communication area communicating with the cavity, the support groove penetrates left and right, the busbar has a static contact area, the busbar passes through the support groove, is supported on the contact box and is positioned, the position of the static contact area corresponds to the communication area, the moving contact extends into the cavity through the lower opening and engages on the static contact area, the heat dissipation hole is a long strip-shaped heat dissipation hole, the length of the heat dissipation hole is equivalent to or greater than the length of the moving contact engaging on the static contact area.

[0007] The multifunctional contact box of the present application has the functions of supporting the busbar and forming the static contact area on the busbar for the dynamic contact to engage, directly supports the busbar through the contact box, can save the material cost of the original insulator supporting the busbar relative to the traditional structure, directly forms the static contact area on the busbar and directly uses as the static contact to engage with the dynamic contact, does not need to additionally manufacture the static contact and the branch copper bar, and also will not cause the installation problem of the additional static contact and the branch copper bar; directly dissipates the heat through the heat dissipation hole for the structure of the static contact area, solves the problem of difficult heat dissipation caused by the insulating package of the contact box, dissipates the hot air generated during the engagement of the dynamic contact and the static contact area through the heat dissipation hole, and enables the equipment installed with the contact box to be able to long-term and stable operation.

[0008] Further, the contact box is provided with a reinforcing structure on and / or beside the heat dissipation hole. The reinforcing structure can avoid affecting the structural strength of the contact box due to the opening of the heat dissipation hole.

[0009] Still further, the contact box is provided with a plug-in flange at the heat dissipation hole, and the plug-in flange is provided for the plug-in installation of the exhaust pipe. The contact box is generally installed in the busbar chamber of the switch cabinet, one end of the exhaust pipe is plugged on the plug-in flange, the other end is connected to the outside of the switch cabinet, and the hot air generated in and below the contact box can be discharged to the outside of the switch cabinet through the heat dissipation hole and the exhaust pipe.

[0010] Still further, the contact box further comprises a positioning pin, and the support groove and the busbar are provided with a plug hole for the plug-in of the positioning pin. The positioning pin can avoid displacement between the busbar and the contact box.

[0011] Still further, the cavity gradually increases in size from the upper part to the lower part along the direction of the support groove, and the size of the lower opening is the largest. The shape of the cavity can avoid the dynamic contact and the busbar being blocked when engaging.

[0012] Still further, the side walls on both sides of the support groove of the contact box are provided with multiple steps, the side walls of the steps make the cavity gradually increase in size from the upper part to the lower part, and the size of the lower opening is the largest. The multiple steps can not only increase the structural strength of the contact box, but also avoid the dynamic contact and the busbar being blocked when engaging.

[0013] Still further, the dynamic contact is rotatable, the rotation direction of the dynamic contact is the same as the orientation of the support groove, and the dynamic contact is rotated into the cavity from the lower opening to engage with the static contact area of the busbar.

[0014] Still further, the contact box extends a fixing lug outwardly from the cavity. The fixing lug can facilitate the fixation of the contact box in the switch cabinet.

[0015] The utility model provides a vertical busbar mounting structure, comprising the multifunctional contact box and a plurality of busbars, the number of multifunctional contact box is same with the number of busbar, the busbar is arranged vertically, the contact box is also arranged vertically and supports the busbar one by one.

[0016] Further, the busbar is a three-phase busbar, and three multifunctional contact boxes are arranged correspondingly, and the spacing between the busbars is adjusted by adjusting the spacing between the multifunctional contact boxes. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is the perspective view of the multifunctional contact box of the utility model.

[0018] Figure 2 It is the sectional view of the multifunctional contact box of the utility model.

[0019] Figure 3 It is the perspective view of another angle of the multifunctional contact box of the utility model.

[0020] Figure 4 It is the sectional view of another angle of the multifunctional contact box of the utility model.

[0021] Figure 5 It is the perspective view of the vertical busbar mounting structure of the utility model. DETAILED DESCRIPTION

[0022] The multifunctional contact box and the vertical busbar mounting structure of the utility model are described with reference to the drawings.

[0023] As shown in Figures 1 to 4 A multifunctional contact box 1 has the functions of supporting a busbar 2 and forming a static contact area 21 on the busbar 2 for a movable contact to engage. The upper part of the contact box 1 is provided with a supporting groove 11, and the lower part of the contact box 1 is provided with a cavity 3 having a lower opening 31. The supporting groove 11 has a communication area 111 communicating with the cavity 3 and extends through the left and right sides. The busbar 2 has a static contact area 21 and passes through the supporting groove 11 to be supported and positioned on the contact box 1, so that the static contact area 21 corresponds to the position of the communication area 111. The movable contact extends into the cavity 3 through the lower opening 31 and engages on the static contact area 21.

[0024] The contact box 1 is made of insulating material such as epoxy resin, that is, the contact box 1 itself has insulating properties, so that the busbar 2 can be directly supported by the contact box 1, thereby saving the material cost of the insulator originally used to support the busbar 2. The side wall of the support groove 11 corresponding to the communication area 111 is shallower than the depth of the support groove 11, or the support groove 11 in the communication area 111 is not provided with a side wall, that is, when the busbar 2 is arranged in the support groove 11, a part of the side wall of the busbar 2 can be exposed in the cavity 3 through the communication area 111, and the exposed area of the busbar 2 is the static contact area 21, which is directly used as a static contact and directly engages with the moving contact, without the need to additionally manufacture a static contact and a branch copper bar, and without the problem of additional installation of the static contact and the branch copper bar.

[0025] The contact box 1 is provided with a heat dissipation hole 13 at the side of the support groove 11, as shown in Figure 1 and Figure 2 , the heat dissipation hole 13 is arranged at one side of the support groove 11, when the moving contact and the static contact area 21 are in contact and work, the hot air around the static contact area 21 and the moving contact can be dissipated from the heat dissipation hole 13 above, and the heat dissipation hole 13 is in the shape of a long strip, the length of the heat dissipation hole 13 is equivalent to or greater than the length of the static contact area 21 where the moving contact engages, the hot air generated during the work of the engagement of the moving contact and the static contact area 21 is dissipated through the heat dissipation hole 13, so that the equipment installed with the contact box 1 can operate stably for a long time, as shown in the drawings, the length of the heat dissipation hole 13 is only slightly shorter than the length of the support groove 11, further improving the heat dissipation effect.

[0026] The contact box 1 is provided with a reinforcing structure 14 on and / or beside the heat dissipation hole 13, the reinforcing structure 14 can avoid affecting the structural strength of the contact box 1 due to the opening of the heat dissipation hole 13, as shown in Figures 2 to 4 , the reinforcing structure 14 includes a first reinforcing rod 141, a second reinforcing rod 143 and a triangular reinforcing block 142, the first reinforcing rod 141 is directly arranged at the middle of the heat dissipation hole 13, one side of the first reinforcing rod 141 is connected to the side wall of the support groove 11, and the other side is connected to the side wall of the cavity 3, while the second reinforcing rod 143 is arranged at the other side of the support groove 11, one side of the second reinforcing rod 143 is connected to the other side wall of the support groove 11, and the other side is connected to the other side wall of the cavity 3, the triangular reinforcing block 142 is arranged beside the first reinforcing rod 141, and there are two of them, one end of the triangular reinforcing block 142 is connected to the top wall of the cavity 3, and the other end is connected to the side wall of the cavity 3.

[0027] The contact box 1 has a plug-in flange 131 at the heat dissipation hole 13, and the plug-in flange 131 is used for the insertion and installation of the exhaust pipe on the contact box 1. The contact box 1 is generally installed in the busbar room of the switchgear. One end of the exhaust pipe is plugged into the plug-in flange 131, and the other end is connected to the outside of the switchgear, so that the hot air generated inside and below the contact box 1 can be discharged to the outside of the switchgear through the heat dissipation hole 13 and the exhaust pipe.

[0028] The contact box 1 also includes a positioning pin 12, and the support groove 11 and the busbar 2 are provided with insertion holes for the positioning pin 12 to be inserted. Figure 3 and Figure 4 As shown, the busbar 2 and the contact box 1 are positioned by directly inserting the positioning pin 12 into the socket. The contact box 1 has a fixing ear 16 extending outward from the cavity 3. The fixing ear 16 is used to fix the contact box 1 in the switch cabinet, so that the contact box 1 can stably support the busbar 2.

[0029] The cavity 3 gradually increases in size from top to bottom along the direction of the support groove 11, and the size is largest at the lower opening 31. The shape of the cavity 3 allows the movable contact to enter the contact box 1 and engage with the stationary contact area 21 without being obstructed by the contact box 1, whether the movable contact enters the contact box 1 by extension or rotation.

[0030] like Figure 2 As shown in the attached drawings of this application, the sidewalls of the contact box 1 on both sides of the support groove 11 are set as multi-level steps 15. The sidewalls of the steps 15 make the size of the cavity 3 gradually increase from the top to the bottom, and the size is largest at the lower opening 31. Setting it as multi-level steps 15 can not only increase the structural strength of the contact box 1, but also prevent the moving contact and the busbar 2 from being blocked by the contact box 1 when they are engaged.

[0031] like Figure 2 As shown, the moving contact is rotatable, and the direction of rotation of the moving contact is the same as the orientation of the support groove 11. The side wall of the support groove 11 extends outward from the top to the bottom, and the corresponding cavity 3 also gradually increases in size from the top to the bottom. The moving contact moves from the lower opening 31 into the cavity 3 and engages with the stationary contact area 21 of the busbar 2.

[0032] like Figures 1 to 5 As shown, a vertical busbar 2 installation structure includes the aforementioned multifunctional contact box 1 and multiple busbars 2. The number of multifunctional contact boxes 1 is the same as the number of busbars 2. The busbars 2 are arranged vertically, and the contact boxes 1 are also arranged vertically, each corresponding to and supporting one of the busbars 2.

[0033] like Figure 5As shown, the busbar 2 in the embodiment of the application is a three-phase busbar 2, and three multifunctional contact boxes 1 are correspondingly arranged, the spacing between the multifunctional contact boxes 1 is adjusted so as to adjust the spacing between the busbars 2, therefore, the vertical busbar 2 mounting structure of the application does not need to be installed in a staggered manner, and the overall width of the switch cabinet device is not increased, and the installation of the switch cabinet is relatively simple.

[0034] According to the disclosure and teaching of the above description, those skilled in the art of the present application can also change and modify the above embodiments. Therefore, the present application is not limited to the specific embodiments disclosed and described above, and some modifications and changes of the present application should fall within the protection scope of the claims of the present application. In addition, although some specific terms are used in the specification, these terms are only for convenience of description and do not constitute any limitation on the present application.

Claims

1. A multifunction contact box, characterized in that, The upper part of the contact box is provided with a support groove and a heat dissipation hole, the lower part of the contact box is provided with a cavity, the cavity has a lower opening, the support groove has a communication area in communication with the cavity, the support groove is penetrated left and right, the bus has a static contact area on the bus, the bus passes through the support groove, is supported on the contact box and is positioned with the contact box, so that the static contact area corresponds to the position of the communication area, the moving contact extends into the cavity from the lower opening and is engaged on the static contact area, the heat dissipation hole is a long strip-shaped heat dissipation hole, the length of the heat dissipation hole is equivalent to the length of the moving contact engaged on the static contact area or the length of the heat dissipation hole is greater than the length of the moving contact engaged on the static contact area.

2. The multifunctional contact box according to claim 1, characterized in that, The contact box is provided with a reinforcing structure on and / or beside the heat dissipation hole.

3. The multifunctional contact box according to claim 1, characterized in that, The contact box is provided with a plug-in flange at the heat dissipation hole, and the plug-in flange is provided for plug-in installation of the exhaust pipe.

4. The multifunctional contact box according to claim 1, characterized in that, The contact box further comprises a positioning pin, and the support groove and the bus are provided with a plug hole for plug-in of the positioning pin.

5. The multifunctional contact box according to claim 1, characterized in that, The cavity gradually increases in size from the upper part to the lower part along the direction of the support groove, and the size is the largest at the lower opening.

6. The multifunctional contact box according to claim 1, characterized in that, The side wall of the support groove on both sides of the contact box is provided as a multi-stage step, the side wall of the step gradually increases the size of the cavity from the upper part to the lower part, and the size is the largest at the lower opening.

7. The multifunctional contact box according to claim 5 or 6, characterized in that The moving contact is rotatable, the rotation direction of the moving contact is the same as the orientation of the support groove, and the moving contact is rotated into the cavity from the lower opening and engaged with the static contact area of the bus.

8. The multifunctional contact box according to claim 1, characterized in that, The contact box extends outward from the cavity and has a fixing lug.

9. A vertical busbar mounting structure characterized by comprising: The multifunctional contact box and a plurality of buses are included, the number of the multifunctional contact boxes is the same as the number of the buses, the buses are arranged vertically, the multifunctional contact boxes are arranged vertically and one-to-one correspond to support the buses.

10. The vertical busbar mounting structure according to claim 9, characterized by The bus is a three-phase bus, and the spacing between the buses is adjusted by adjusting the spacing between the multifunctional contact boxes.

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