CN209994056U

CN209994056U - High heat dissipation bus duct structure

Info

Publication number: CN209994056U
Application number: CN201920157638.4U
Authority: CN
Inventors: 王署斌
Original assignee: Markwell (guangzhou) Electric Co Ltd; Wetown Electric Group Co Ltd
Current assignee: Markwell (guangzhou) Electric Co Ltd; Wetown Electric Group Co Ltd
Priority date: 2019-01-29
Filing date: 2019-01-29
Publication date: 2020-01-24
Anticipated expiration: 2029-01-29

Abstract

The utility model discloses a high heat dissipation bus duct structure. The novel insulation device comprises a shell and a cover plate, wherein the shell is of a convex cross-sectional structure, the middle part of an inner cavity of the upper half part of the shell is divided into a left cavity and a right cavity, a U-shaped upper insulation part is arranged in each of the left cavity and the right cavity, two U-shaped lower insulation parts which are pressed against the edges of the shell are arranged in the inner cavity of the lower half part of the shell, U-shaped arrangement grooves are formed in the upper insulation part and the lower insulation parts, a plurality of insulation supports which are longitudinally arranged along the shell are arranged on the cover plate, and each insulation support can be supported at the lower end of each. After adopting foretell structure for four-phase U-shaped conductor all directly leans on to press on the lateral wall of casing through the insulating part, and four-phase conductor all can be directly dispel the heat to the outside, has improved the heat-sinking capability from this greatly, and the protruding structure that sets up in addition has still guaranteed stable atress, has improved the reliability of connecting, and its overall structure reasonable in design connects the installation simply, and the grafting is convenient and the electrically conductive reliability is very high.

Description

High heat dissipation bus duct structure

Technical Field

The invention relates to a power transmission and distribution component in a power supply system, in particular to a high-heat-dissipation bus duct structure.

Background

Various bus ducts are often used for power transmission and distribution in a power supply system, the conventional bus duct generally comprises a shell and a conductor which is arranged in the shell and is coated by a multi-phase insulating material, and the conductor is completely coated by the insulating material, so that the heat dissipation area between the conductor and the shell is small, the heat dissipation of the whole bus duct is not facilitated in the use process, the heat dissipation performance is poor, in addition, the shell and the conductor of the bus duct are integrally designed, the installation of the bus duct is troublesome, the conductive connection is unreliable, and the manufacturing cost is also high.

Disclosure of Invention

The invention aims to provide a high-heat-dissipation bus duct structure which is reliable in connection, good in heat dissipation performance, simple to install and convenient and fast to use.

In order to solve the technical problem, the utility model discloses a high heat dissipation bus duct structure, including the apron of the casing that is type cross sectional shape structure and casing bottom opening part installation, from the median cut for controlling two arrangement cavities in the first half inner chamber of casing, it has the last insulating part of a U-shaped to settle respectively in two cavities about, be provided with two lower insulating parts that lean on the U-shaped of pressing at the casing edge in the inner chamber of casing the latter half, all form the U-shaped resettlement groove that is used for settling the U-shaped conductor in going up insulating part and the lower insulating part, a plurality of insulating supports of vertically arranging along the casing in the installation on the apron, every insulating support can support at each looks conductor lower extreme.

The middle part of the upper half part of the shell is provided with two sheets extending from the top to the lower part of the cavity to form a U-shaped clamping groove between the left and right placing cavities, and a U-shaped grounding conductor is placed in the U-shaped clamping groove.

The inside wall of lower insulating part is provided with the supporting shoe, the lateral wall lower extreme of going up the insulating part supports on the supporting shoe.

The insulating support comprises a lower support frame and a support arm arranged on the lower support frame.

The U-shaped conductor is arranged in the U-shaped arrangement groove of the upper insulating piece and the lower insulating piece, the side wall of the U-shaped arrangement groove of the upper insulating piece and the side wall of the U-shaped arrangement groove of the lower insulating piece are provided with protrusions, the whole surface of the outer side surface of the U-shaped conductor and the side wall of the U-shaped arrangement groove of each phase are in contact, so that the U-shaped conductor of each phase can directly radiate heat through the shell, and the other side surface of the U-shaped conductor of each phase is pressed on the protrusions.

The cover plate is provided with a pair of supporting hooks positioned in the shell, and the bottom edge of the lower supporting frame is provided with a hook matched with the supporting hooks.

And a top dovetail groove positioned in the middle is formed in the outer side of the top of the shell.

Bottom dovetail grooves are formed in two sides of the lower portion of the shell, and the cover plate is installed with the shell in a matched mode through the bottom dovetail grooves.

And heat dissipation teeth are arranged outside the shell.

After adopting foretell structure, because the last insulator of installing double-phase U-shaped conductor in the casing first half inner chamber and two that set up in the casing latter half inner chamber lean on to press at the lower insulator of installing double-phase U-shaped conductor at the casing edge and install a plurality of insulation support of vertically arranging along the casing on the apron, make four-phase U-shaped conductor all directly lean on to press on the lateral wall of casing from this through the insulator, four-phase conductor all can be directly to the external heat dissipation, the heat-sinking capability has been improved greatly from this, the protruding structure that sets up in addition, stable atress has still been guaranteed, the reliability of connection has been improved, furthermore, its overall structure reasonable in design, connect the installation simple, it is very high to peg graft conveniently and electrically conductive reliability.

Drawings

Fig. 1 is a schematic sectional structure view of the high heat dissipation bus duct structure of the present invention.

Detailed Description

The high heat dissipation bus duct structure of the present invention is further described in detail below with reference to the accompanying drawings and the detailed description.

As shown in the figure, the bus duct structure with high heat dissipation of the invention comprises a shell 1 with a convex cross section structure and a cover plate 2 arranged at an opening at the bottom of the shell, heat dissipation teeth can be arranged outside the shell, the middle part of the shell 1 is provided with a U-shaped clamping groove 7 formed by two sheets extending from the top to the lower part of a cavity, a grounding conductor 8 is arranged in the U-shaped clamping groove 7, an inner cavity of the upper half part of the shell 1 (a top convex part in the convex structure) is divided into a left placing cavity and a right placing cavity by the U-shaped clamping groove 7 from the middle part, a U-shaped upper insulating part 3 is respectively arranged in the left and the right placing cavities, two U-shaped lower insulating parts 4 pressed against the edge of the shell are arranged in an inner cavity of the lower half part of the shell 1 (a lower part with larger width in the convex structure), U-shaped placing grooves for placing the U-shaped, namely, four U-shaped placing grooves for placing the U-shaped conductors 5 are formed in the upper insulating member 3 and the lower insulating member 4, the upper left and right U-shaped placing grooves and the lower left and right U-shaped placing grooves are respectively fixed (L1, L2, L3, N phase), the middle U-shaped clamping groove 7 is used for fixing the ground wire PE, in other words, each phase of U-shaped conductor 5 is separated from the shell by the upper insulating member 3 and the lower insulating member 4; a plurality of insulating supports 6 which are longitudinally arranged along the shell are arranged on the cover plate 2, each insulating support 5 can be supported at the lower end of each phase conductor (including a U-shaped conductor and a grounding conductor), the distance between every two adjacent insulating supports 5 is 50-3000 mm, and the distance mainly depends on different amperes and different bus duct lengths; the length of the insulating material with the same length as the shell at the distance between the two ends of the U-shaped conductor 5 is changed between 5mm and 35mm, and the problem that the creepage distance required by different standards is different is mainly solved; the ground wire PE is directly connected with the shell foundation to provide ground protection.

Further, since the lower insulator 4 and the upper insulator 3 are both configured as a U-shaped structure, they inevitably form two side walls, namely an outer side wall located on the outer side and an inner side wall located on the inner side, the inner side wall of the lower insulator 4 is provided with a supporting block 9, the lower end of the outer side wall of the upper insulator 3 is supported on the supporting block 9, the insulating support 6 comprises a lower supporting frame 16 and a supporting arm 10 provided on the lower supporting frame, as can be seen from the figure, the supporting arm 10 is located at the middle part of the supporting frame, just under the U-shaped conductors 5 in the two upper insulators 3, the bottom end of the inner side wall of the lower insulator 4 and the bottom end of the inner side wall of the U-shaped conductor 5 in the lower insulator 4 are both supported on the lower supporting frame 16, the bottom end of the U-shaped conductor 5 in the upper insulator 3 is supported on the top end of the supporting arm 10, one side wall of the U-shaped accommodating grooves of the upper insulator 3 and, of course, a plurality of protrusions 11 in the upper insulator 3 and the lower insulator 4 are arranged from top to bottom and the heights are sequentially reduced, so that the connection reliability is increased, one side surface of each phase of U-shaped conductor 5 is pressed against one side wall of the corresponding U-shaped placement groove in the corresponding upper insulator and the corresponding lower insulator to form surface contact, as can be seen from the figure, the surface contact formed by the U-shaped conductor 5 and the U-shaped placement groove is the side of the insulator which is contacted with the shell, the other side surface of each phase of U-shaped conductor 5 is pressed against the protrusion of the other side wall of the corresponding U-shaped placement groove in the corresponding insulator to form line contact (non-shell contact side), that is, one side of the U-shaped conductor 5 is contacted with the shell through the plane contact of the insulating material, the heat dissipation performance is improved, the other side of the U-shaped conductor is in line contact with the insulating material, the stable stress is ensured, one side of the U-shaped conductor 5 is contacted with the shell through the plane contact of the insulating, the heat dissipation performance is improved, the other side of the heat dissipation performance is in line contact with the insulating material, and in addition, due to the structural design, all conductors are in large-area contact with the shell or the shell at the ground wire, so that the heat dissipation performance is improved.

Still further, be provided with a pair of support couple 12 that is arranged in the casing on the apron 2, the bottom edge of under bracing frame is provided with and supports couple complex pothook 13, the top outside of casing 1 is provided with the top dovetail 14 that is located the middle part, can conveniently hoist and mount and articulate, the lower part both sides of casing 1 are provided with bottom dovetail 15, apron 2 passes through bottom dovetail and casing 1 cooperation installation, conveniently fixed apron, in addition, the casing is aluminum alloy material, the appearance can increase or not increase the design of heat dissipation tooth, further increase the radiating effect.

Claims

1. The utility model provides a high heat dissipation bus duct structure which characterized in that: including casing (1) and the apron (2) of casing bottom opening part installation that are type font cross sectional shape structure, two arrangement cavities about following the middle part partition in casing (1) first half inner chamber, settle respectively in two cavities about having an upper insulation piece (3) of U-shaped, be provided with two lower insulation pieces (4) that lean on the U-shaped of pressing at the casing edge in casing (1) the latter half inner chamber, all form the U-shaped groove of settling U-shaped conductor (5) in upper insulation piece (3) and lower insulation piece (4), install on apron (2) along a plurality of insulating support (6) that the casing vertically arranged, every insulating support (6) all support at each looks conductor lower extreme.

2. A high heat dissipation bus duct structure according to claim 1, characterized in that: the middle part of the upper half part of the shell (1) is provided with two sheets extending from the top to the lower part of the cavity to form a U-shaped clamping groove (7) positioned between the left and right placing cavities, and a U-shaped grounding conductor (8) is placed in the U-shaped clamping groove (7).

3. A high heat dissipation bus duct structure according to claim 1 or 2, characterized in that: the inner side wall of the lower insulating part (4) is provided with a supporting block (9), and the lower end of the outer side wall of the upper insulating part (3) is supported on the supporting block (9).

4. A high heat dissipation bus duct structure according to claim 3, characterized in that: the insulating support (6) comprises a lower support frame (16) and a support arm (10) arranged on the lower support frame.

5. A high heat dissipation bus duct structure according to claim 1, 2 or 4, characterized in that: the lateral wall of the U-shaped arrangement groove of the upper insulating part (3) and the lower insulating part (4) is provided with a protrusion (11), the lateral surface of the U-shaped conductor (5) and the lateral wall of the U-shaped arrangement groove are in face contact with each other to enable the U-shaped conductor (5) to radiate through the shell, and the other lateral surface of the U-shaped conductor (5) is pressed on the protrusion of the lateral wall of the U-shaped arrangement groove.

6. A high heat dissipation bus duct structure according to claim 4, characterized in that: the cover plate (2) is provided with a pair of supporting hooks (12) positioned in the shell, and the bottom edge of the lower supporting frame is provided with a hook (13) matched with the supporting hooks.

7. A high heat dissipation bus duct structure according to claim 6, characterized in that: and a top dovetail groove (14) positioned in the middle is formed in the outer side of the top of the shell (1).

8. A high heat dissipation bus duct structure according to claim 7, characterized in that: bottom dovetail grooves (15) are formed in two sides of the lower portion of the shell (1), and the cover plate (2) is installed with the shell (1) in a matched mode through the bottom dovetail grooves.

9. A high heat dissipation bus duct structure according to claim 8, characterized in that: and heat dissipation teeth are arranged outside the shell (1).