CN219833320U - Novel contact box and switch cabinet with optimized heat dissipation performance - Google Patents
Novel contact box and switch cabinet with optimized heat dissipation performance Download PDFInfo
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- CN219833320U CN219833320U CN202320513593.6U CN202320513593U CN219833320U CN 219833320 U CN219833320 U CN 219833320U CN 202320513593 U CN202320513593 U CN 202320513593U CN 219833320 U CN219833320 U CN 219833320U
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- heat dissipation
- contact
- holes
- end plate
- box body
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- 230000017525 heat dissipation Effects 0.000 title claims abstract description 82
- 238000009413 insulation Methods 0.000 claims abstract description 25
- 238000003780 insertion Methods 0.000 claims abstract description 10
- 230000037431 insertion Effects 0.000 claims abstract description 10
- 230000002093 peripheral effect Effects 0.000 claims abstract description 8
- 230000008719 thickening Effects 0.000 claims description 11
- 230000003068 static effect Effects 0.000 claims description 10
- 238000005219 brazing Methods 0.000 claims description 4
- 238000000034 method Methods 0.000 claims description 4
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 239000006185 dispersion Substances 0.000 claims description 2
- 230000005855 radiation Effects 0.000 description 7
- 230000009286 beneficial effect Effects 0.000 description 5
- 230000001965 increasing effect Effects 0.000 description 5
- 238000009434 installation Methods 0.000 description 5
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 4
- 229910052802 copper Inorganic materials 0.000 description 4
- 239000010949 copper Substances 0.000 description 4
- 239000000463 material Substances 0.000 description 3
- 241000722921 Tulipa gesneriana Species 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 239000004020 conductor Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 229910000679 solder Inorganic materials 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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- Installation Of Bus-Bars (AREA)
Abstract
The utility model discloses a novel contact box and a switch cabinet for optimizing heat dissipation performance, wherein the novel contact box comprises an insulation box body, the insulation box body is provided with a contact cavity, two ends of the contact cavity, which are opposite to each other in the axial direction of the insulation box body, are respectively provided with an insertion port and an end plate, and the end plate is provided with a yielding port for a branch bus and/or a fixed contact to pass through; the end plate is provided with at least one first radiating hole, at least one second radiating hole is formed in the top of the peripheral wall body of the insulation box body, and the first radiating hole and the second radiating hole are respectively communicated with the contact cavity. The arrangement of the first heat dissipation holes and the second heat dissipation holes can improve the heat dissipation condition in the contact cavity, greatly enhance the air convection and strengthen the heat dissipation.
Description
Technical Field
The utility model relates to the field of electricity, in particular to a novel contact box and a novel switch cabinet for optimizing heat dissipation performance.
Background
The switch cabinet is generally provided with a contact box which is used for supporting the branch bus and the fixed contact, fixing the position of the contact box, preventing the contact box from displacement under the action of external force, and simultaneously achieving the function of communicating the handcart room with the bus room and the cable room, so that the compartments are mutually independent while keeping electric connection. The contact box also has an isolation function, and can shield the exposed branch bus and the static contact, so that the distance from the contact box to the cabinet body meets the insulation and safety requirements. The traditional switch cabinet is characterized in that one end of a contact box of the switch cabinet is provided with an insertion port of a contact, the other end of the contact box is closed, a branch bus fixing hole is formed in the tail of the closed contact box, and a branch bus extending port is formed in the rear upper portion of the contact box. If the closed contact box is used for fixing the tubular branch bus, the end part of the branch bus must be flattened to be fixed on the installation plane, so that the tubular branch bus with flat end part and the fixed contact which is the same as the tubular branch bus can be connected only through a mechanical fixing way, and the way is unfavorable for the temperature rise expression of the fixed contact and the tubular branch bus because of larger contact resistance when the fixed contact and the tubular branch bus are in lap joint. Therefore, a novel contact box is provided with a through hole at the other end so as to be suitable for fixing a tubular branch bus, but the novel contact box has the following defects that after the contact box is fixed with the branch bus and a fixed contact, a large amount of heat generated in a contact cavity is difficult to discharge only through a gap between the branch bus and a bus avoiding hole on the contact box, and is easy to cause overheat to cause accidents.
Disclosure of Invention
The utility model provides a novel contact box and a switch cabinet with optimized heat dissipation performance, aiming at the technical problems in the prior art.
The technical scheme adopted for solving the technical problems is as follows: the utility model provides a novel contact box of optimizing heat dispersion, includes insulating box body, and this insulating box body is equipped with the contact chamber, and this contact chamber is at insulating box body axial opposite both ends have respectively and insert port and end plate, is equipped with the mouth of stepping down that supplies branch busbar and/or stationary contact to pass on this end plate; the end plate is provided with at least one first radiating hole, at least one second radiating hole is formed in the top of the peripheral wall body of the insulation box body, and the first radiating hole and the second radiating hole are respectively communicated with the contact cavity.
Further, an outer umbrella skirt is arranged on the outer wall surface of the insulation box body and is positioned between the second heat dissipation hole and one end where the insertion port is positioned; the second heat dissipation holes are close to the end plate, and the outer umbrella skirt is close to the heat dissipation holes.
Further, the second heat dissipation hole is a strip hole, and the length direction of the second heat dissipation hole is perpendicular to the axial direction of the insulation box body; the width of the second heat dissipation holes is smaller than 12.5mm.
Further, the number of the first heat dissipation holes is multiple, and the multiple first heat dissipation holes are distributed along the periphery of the abdication opening.
Further, the first heat dissipation holes are arc waist holes, and the width of the first heat dissipation holes is smaller than 12.5mm.
Further, the end plate is provided with a plurality of fixing holes, and the fixing holes are unthreaded holes or screw holes.
Further, a thickening layer is arranged on the outer end face of the end plate at the position where the fixing holes are, and each thickening layer is provided with at least one fixing hole.
Further, the insulating baffle plate is arranged on one side of the end plate, which is away from the contact cavity, and extends along the axial direction of the insulating box body to one side of the end plate, which is away from the end plate; the insulating baffle is C-shaped or U-shaped with an upward opening, and a L-shaped abdication notch is respectively arranged at one side of the two ends of the insulating baffle opposite to the end plate; an inner umbrella skirt is arranged on the inner wall surface of the insulation box body and is close to the insertion port.
The utility model further provides a switch cabinet, which comprises a cabinet body and a bus assembly positioned in the cabinet body, wherein the bus assembly comprises a branch bus and a fixed contact; the bus assembly further comprises the novel contact box with optimized heat dissipation performance, the static contact is arranged in the contact cavity, and one end of the static contact is electrically connected with one end of the branch bus.
Further, one end of the static contact is connected with one end of a branch bus in a brazing way, and the branch bus is tubular; the outer wall surface of one end of the static contact is provided with a circle of flange or a plurality of flange edges, and the flange or the flange edges are fixed on the outer end surface of the end plate by screws penetrating out of the contact cavity.
Compared with the prior art, the utility model has the following beneficial effects:
1. according to the utility model, the end plate is provided with at least one first radiating hole, the top of the peripheral wall body of the insulating box body is provided with at least one second radiating hole, and the first radiating hole and the second radiating hole are respectively communicated with the contact cavity, so that the air convection is enhanced, and the radiating capacity of the contact box is enhanced.
2. The outer wall surface of the insulation box body is provided with the outer umbrella skirt, so that the creepage distance of the outer surface of the insulation box body can be increased, and the insulation performance is improved.
3. The second heat dissipation holes are long strip holes, and the first heat dissipation holes are arc waist holes, so that the heat dissipation area is increased, and the air convection is further enhanced.
4. The outer end face of the end plate is provided with thickening layers at the positions where the fixing holes are, and each thickening layer is provided with at least one fixing hole, so that the contact box and the fixed contact are convenient to install, and the material and weight of the contact box can be reduced.
5. The insulating baffle is arranged on one side of the end plate, deviating from the contact cavity, and extends along the axial direction of the insulating box body, deviating from one side of the end plate, so that an insulating effect is achieved between the tubular bus structure and the grounding shell, the insulating strength can be increased, and the distance from the copper pipe branch bus to the cabinet body is ensured to meet the insulating requirement.
6. One end of the fixed contact is connected with the branch bus in a brazing way, so that no visible breakpoint exists between the fixed contact and the branch bus, no contact resistance exists between the joint surfaces of the fixed contact and the branch bus, and the temperature rise of the fixed contact is reduced.
The utility model is described in further detail below with reference to the drawings and examples; the novel contact box and the switch cabinet for optimizing the heat dissipation performance are not limited to the embodiment.
Drawings
FIG. 1 is a schematic perspective view of a novel contact box of the present utility model;
FIG. 2 is a cross-sectional view of the novel contact box of the present utility model;
FIG. 3 is a schematic partial cross-sectional view of the busbar assembly of the present utility model;
FIG. 4 is a perspective view of a tubular busbar construction of the present utility model;
fig. 5 is a schematic perspective view of a stationary contact of the present utility model;
fig. 6 is a perspective view of a stationary contact of the present utility model;
FIG. 7 is a cross-sectional view of the switch cabinet of the present utility model;
in the figure: 1. a branch bus; 11. a fourth heat radiation hole; 12. a fifth heat radiation hole; 2. a stationary contact; 21. a positioning groove; 22. a volume tank; 23. a flange edge; 231. a mounting hole; 24. a third heat radiation hole; 3. an insulating case; 31. a contact cavity; 32. an insertion port; 33. an end plate; 331. a yielding port; 332. a first heat radiation hole; 333. thickening layers; 3331. a fixing hole; 34. a second heat radiation hole; 35. an outer umbrella skirt; 36. an inner umbrella skirt; 37. an insulating baffle; 371. a relief notch; 4. a screw; 5. plum blossom contact; 6. a cabinet body.
Detailed Description
In the present utility model, the terms "first," "second," "third," "fourth," "fifth," and the like are used merely to distinguish between similar objects and are not necessarily used to describe a particular order or sequence, nor are they to be construed as indicating or implying relative importance. For the purposes of this description, references to orientations or positional relationships indicated as "up" and "down" and the like are based on the orientation or positional relationships shown in the drawings, and are merely for convenience of description of the utility model, and are not meant to indicate or imply that the apparatus referred to must have a particular orientation, be configured and operated in a particular orientation, and therefore should not be construed as limiting the scope of the utility model. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.
In addition, in the description of the present utility model, unless otherwise indicated, "a plurality" means two or more. "and/or", describes an association relationship of an association object, and indicates that there may be three relationships, for example, a and/or B, and may indicate: a exists alone, A and B exist together, and B exists alone. The character "/" generally indicates that the context-dependent object is an "or" relationship.
Referring to fig. 1-2, the novel contact box with optimized heat dissipation performance comprises an insulation box body 3, wherein the insulation box body 3 is made of an epoxy resin material and is manufactured by adopting an APG automatic pressure gel process. The insulation box body 3 is provided with a contact cavity 31, two ends of the contact cavity 31, which are opposite to each other in the axial direction of the insulation box body 3, are respectively provided with an insertion port 32 and an end plate 33, and the end plate 33 is provided with a yielding port 331 for the branch bus 1 and/or the fixed contact 2 to pass through; the end plate 33 is provided with at least one first heat dissipation hole 332, the top of the peripheral wall body of the insulating box body 3 is provided with at least one second heat dissipation hole 34, and the first heat dissipation hole 332 and the second heat dissipation hole 34 are respectively communicated with the contact cavity 31.
In this embodiment, a second heat dissipation hole 34 is formed at the top of the peripheral wall of the insulating box body 3, and an outer umbrella skirt 35 is disposed on the outer wall of the insulating box body 3, so as to increase the creepage distance of the outer surface of the insulating box body and improve the insulating performance. The outer umbrella skirt 35 is located between the second heat dissipation hole 34 and the end of the insertion port 32; the second heat dissipation holes 34 are close to the end plate 33, and the outer umbrella skirt 35 is close to the second heat dissipation holes 34.
In this embodiment, the second heat dissipation holes 34 are elongated holes, and the length direction thereof is perpendicular to the axial direction of the insulation box 3, which is beneficial to increasing the heat dissipation area and enhancing the air convection (cold air in, hot air out). The width of the second heat dissipation holes 34 is smaller than 12.5mm to meet the IP2X protection requirement.
In this embodiment, the number of the first heat dissipation holes 332 is plural, and the plurality of first heat dissipation holes 332 are distributed along the circumference of the relief hole 331; the first heat dissipation holes 332 are arc-shaped waist holes, which is beneficial to increasing the heat dissipation area. Specifically, the number of the first heat dissipation holes 332 is four, and the four first heat dissipation holes 332 are symmetrically distributed on two sides of the relief hole 331, so as to form a heat convection channel, and enhance air convection. The width of the first heat dissipation holes 332 is smaller than 12.5mm, so as to meet the IP2X protection requirement.
In this embodiment, the end plate 33 is provided with a plurality of fixing holes 3331, and the fixing holes 3331 are light holes or screw holes. The outer end surface of the end plate 33 is provided with a thickening layer 333 at the location of the fixing hole 3331, without thickening the whole installation plane, which is beneficial to saving materials and reducing weight of the contact box, and each thickening layer 333 is provided with at least one fixing hole 3331. Specifically, the end plate 33 is provided with four fixing holes 3331, and the fixing holes 3331 are light holes. Each thickening layer 333 has two fixing holes 3331 thereon, and the fixing holes 3331 are light holes.
In this embodiment, the insulating baffle 37 is further included, and the insulating baffle 37 is disposed on a side of the end plate 33 facing away from the contact cavity 31, and extends along an axial direction of the insulating box 3 toward a side facing away from the end plate 33, so as to play a role in isolating between the tubular bus structure and the grounding shell; the insulating baffle 37 is U-shaped with an upward opening, and the two ends of the insulating baffle 37 are opposite to one side of the end plate 33, and are respectively provided with an L-shaped abdication notch 371, so as to facilitate the loading of the static contact 2. The inner wall surface of the insulation box body 3 is provided with an inner umbrella skirt 36 to increase the creepage distance of the inner surface of the inner umbrella skirt, improve the insulation performance, and the inner umbrella skirt 36 is close to the insertion port 32.
According to the novel contact box with optimized heat dissipation performance, under the condition that the installation size of the contact box is unchanged, the joint of the branch bus 1 and the fixed contact 2 is sealed in the contact box and is changed into the open contact box, so that heat dissipation of the joint of the branch bus 1 and the fixed contact 2 can be improved. The arrangement of the first heat dissipation holes 332 and the second heat dissipation holes 34 can improve the heat dissipation condition inside the contact cavity, greatly enhance the air convection and strengthen the heat dissipation.
Referring to fig. 1-7, the switch cabinet of the utility model comprises a cabinet body 6 and a bus assembly positioned in the cabinet body 6, wherein the bus assembly comprises a branch bus 1 and a fixed contact 2; the bus assembly further comprises a novel contact box with optimized heat dissipation performance according to the embodiment, the fixed contact 2 is installed in the contact cavity 31 through the yielding port 331, and one end of the fixed contact 2 is electrically connected with one end of the branch bus 1.
In this embodiment, one end of the fixed contact 2 is connected with one end of the branch bus 1 by brazing, so that no visible breakpoint exists between the fixed contact 2 and the branch bus 1, and no contact resistance generated between the two faying surfaces is present, which is beneficial to reducing the temperature rise at the fixed contact 2, and the branch bus 1 is tubular, specifically, the branch bus 1 is a copper pipe. The outer wall surface of one end of the fixed contact 2 is provided with a ring of flange or a plurality of flange edges, and the flange or the flange edges are fixed on the outer end surface of the end plate 33. Specifically, the outer wall surface of one end of the stationary contact 2 is provided with two flange edges 23 distributed along the circumferential direction thereof, each flange edge 23 is provided with two mounting holes 231, the mounting holes 231 are threaded holes, and when the stationary contact is mounted, the mounting holes 231 are in one-to-one correspondence with the fixing holes 3331 on the end plate 33, and the insulating box body 3 and the stationary contact 2 are mutually fixed through screws 4.
In this embodiment, as shown in fig. 3, the screw 4 penetrates out from the contact cavity 31 and fixes the insulating box body 3 and the fixed contact 2, so that an assembler can stand in front of the cabinet to operate, and the space is large and the operation is convenient. And after the screw 4 is locked, when the screw is at the maximum stroke of the circuit breaker, the end face of the tulip contact 5 is still at a certain distance from the screw 4, so that the tulip contact 5 and the screw 4 are prevented from colliding in the movement process of the circuit breaker handcart.
In this embodiment, a circle of positioning groove 21 is provided on an inner wall surface of one end of the stationary contact 2, one end of the branch busbar 1 is inserted into the positioning groove 21, a groove bottom surface of the positioning groove 21 faces one end of the branch busbar 1, a groove wall surface of the positioning groove 21 is located at an outer periphery of one end of the branch busbar 1, and the positioning groove 21 is used for determining a relative position when the branch busbar 1 and the stationary contact 2 are in braze welding connection. The groove wall surface of the positioning groove 21 is provided with a circle of volume groove 22 for collecting surplus solder remained by welding the branch bus 1 and the fixed contact 2.
In this embodiment, four third heat dissipation holes 24 penetrating inside and outside are provided on the peripheral wall surface of the fixed contact 2, and the third heat dissipation holes 24 are circumferentially distributed on the peripheral wall surface of the fixed contact 2, so as to improve heat dissipation at the engagement position of the movable and fixed contact 2.
In this embodiment, the branch busbar 1 is provided with two fourth heat dissipation holes 11 and two fifth heat dissipation holes 12 that are internally and externally penetrated, the fourth heat dissipation holes 11 are close to the fixed contact 2, and the fifth heat dissipation holes 12 are close to the other end of the branch busbar 1. The two fourth heat dissipation holes 11 vertically correspond to each other, the two fifth heat dissipation holes 12 are opposite to each other, and the two fifth heat dissipation holes 12 and the two fourth heat dissipation holes 11 are respectively located on the same side of the branch bus 1. Specifically, the branch bus 1 is of a hollow structure, the outer diameter of the branch bus is 60-80mm, and the wall thickness of the branch bus is 6-10mm. The fourth heat radiation hole 11 and the fifth heat radiation hole 12 at the two ends have the aperture of 12-16mm (the specific value is determined according to the outer diameter size of the copper pipe, the thicker the copper pipe is, the larger the aperture can be), and when the equipment works, the conductor heats, and a convection air channel can be formed, so that the hot air convection is realized.
According to the switch cabinet, when the switch cabinet is installed, the branch bus 1 and the fixed contact 2 are welded and fixed together, then the fixed contact 2 passes through the abdication port 331 on the end plate 33 and enters the contact cavity 31, the installation holes 231 of the flange edges 23 on the fixed contact 2 are aligned with the fixing holes 3331 one by one, then the two are fixedly connected through the screw 4, and finally the contact box is installed on the cabinet body, so that the installation of the bus assembly is completed.
The utility model relates to a switch cabinet, which relates to the structure and heat dissipation principle of a contact box, and the description of the switch cabinet is referred to above, and is not repeated here.
The utility model relates to a novel contact box and a novel switch cabinet with optimized heat dissipation performance, which are not related to the same parts as the prior art or can be realized by adopting the prior art.
The above embodiment is only used for further explaining a novel contact box and a switch cabinet with optimized heat dissipation performance, but the utility model is not limited to the embodiment, and any simple modification, equivalent variation and modification to the above embodiment according to the technical substance of the utility model falls within the protection scope of the technical proposal of the utility model.
Claims (10)
1. The utility model provides a novel contact box of optimizing heat dispersion, includes insulating box body, and this insulating box body is equipped with the contact chamber, and this contact chamber is at insulating box body axial opposite both ends have respectively and insert port and end plate, is equipped with the mouth of stepping down that supplies branch busbar and/or stationary contact to pass on this end plate; the method is characterized in that: the end plate is provided with at least one first radiating hole, at least one second radiating hole is formed in the top of the peripheral wall body of the insulation box body, and the first radiating hole and the second radiating hole are respectively communicated with the contact cavity.
2. The novel contact box with optimized heat dissipation performance according to claim 1, wherein: an outer umbrella skirt is arranged on the outer wall surface of the insulation box body and is positioned between the second heat dissipation hole and one end where the insertion port is positioned; the second heat dissipation holes are close to the end plate, and the outer umbrella skirt is close to the heat dissipation holes.
3. The novel contact box for optimizing heat dissipation performance according to claim 1 or 2, wherein: the second heat dissipation holes are strip holes, and the length direction of the second heat dissipation holes is perpendicular to the axial direction of the insulation box body; the width of the second heat dissipation holes is smaller than 12.5mm.
4. The novel contact box with optimized heat dissipation performance according to claim 1, wherein: the number of the first heat dissipation holes is multiple, and the multiple first heat dissipation holes are distributed along the periphery of the abdication opening.
5. The novel contact box for optimizing heat dissipation performance according to claim 1 or 4, wherein: the first heat dissipation holes are arc waist holes, and the width of each first heat dissipation hole is smaller than 12.5mm.
6. The novel contact box with optimized heat dissipation performance according to claim 1, wherein: the end plate is provided with a plurality of fixing holes, and the fixing holes are unthreaded holes or screw holes.
7. The novel contact box with optimized heat dissipation performance according to claim 6, wherein: the outer end face of the end plate is provided with thickening layers at the positions where the fixing holes are located, and each thickening layer is provided with at least one fixing hole.
8. The novel contact box with optimized heat dissipation performance according to claim 1, wherein: the insulation baffle is arranged on one side of the end plate, which is away from the contact cavity, and extends along the axial direction of the insulation box body to one side of the end plate, which is away from the end plate; the insulating baffle is C-shaped or U-shaped with an upward opening, and a L-shaped abdication notch is respectively arranged at one side of the two ends of the insulating baffle opposite to the end plate; an inner umbrella skirt is arranged on the inner wall surface of the insulation box body and is close to the insertion port.
9. A switch cabinet comprises a cabinet body and a bus assembly positioned in the cabinet body, wherein the bus assembly comprises a branch bus and a fixed contact; the method is characterized in that: the bus assembly further comprises a novel contact box with optimized heat dissipation performance according to any one of claims 1-8, wherein the static contact is installed in the contact cavity, and one end of the static contact is electrically connected with one end of the branch bus.
10. The switchgear as claimed in claim 9, wherein: one end of the static contact is connected with one end of a branch bus in a brazing way, and the branch bus is tubular; the outer wall surface of one end of the static contact is provided with a circle of flange or a plurality of flange edges, and the flange or the flange edges are fixed on the outer end surface of the end plate by screws penetrating out of the contact cavity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320513593.6U CN219833320U (en) | 2023-03-16 | 2023-03-16 | Novel contact box and switch cabinet with optimized heat dissipation performance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320513593.6U CN219833320U (en) | 2023-03-16 | 2023-03-16 | Novel contact box and switch cabinet with optimized heat dissipation performance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219833320U true CN219833320U (en) | 2023-10-13 |
Family
ID=88285958
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320513593.6U Active CN219833320U (en) | 2023-03-16 | 2023-03-16 | Novel contact box and switch cabinet with optimized heat dissipation performance |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219833320U (en) |
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2023
- 2023-03-16 CN CN202320513593.6U patent/CN219833320U/en active Active
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