Double-layer connection bus structure

Abstract

The utility model provides a double-layer connection bus structure, which is used for solving the technical problems of difficulty in operation of installation personnel, redesign of a switch cabinet body structure and waste of copper materials caused by great increase of the cross-sectional area of a conductor in the scheme that a single connection bus is adopted between existing gas insulation switch cabinets. According to the double-layer connection bus structure, the first solid buses on the upper layer are physically and electrically connected through the ports in the horizontal direction of the upper layer connectors, and the second solid buses on the lower layer are physically and electrically connected through the ports in the horizontal direction of the lower layer connectors. Meanwhile, fastening connection and electric connection of the upper-layer connector and the lower-layer connector are realized through ports in the vertical directions of the upper-layer connector and the lower-layer connector, a conducting rod, a first bolt and a second bolt; according to the utility model, the structure of two layers of connecting buses can work simultaneously to share load, so that the maximum rated current of the product is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to connecting bus, especially a double -deck connecting bus for gas insulation switch cabinet. BACKGROUND

[0002] At present, the capacity of gas insulation switch cabinet in new energy field is bigger and bigger, and the rated current of gas insulation switch cabinet is bigger and bigger; the body of the switch cabinet can match the big rated current by increasing the copper bar in the inside, and because the connecting bus between the switch cabinet and the switch cabinet is single, the appearance of the single connecting bus must be very big, which can match the big rated current. But the existing single connecting bus scheme has the following shortcomings:

[0003] 1, the outer diameter of the connecting bus increases, causing the installation personnel to operate difficultly;

[0004] 2, the weight of the connecting bus increases too much, which needs to be borne by the switch cabinet body, so the structure of the switch cabinet body needs to be redesigned;

[0005] 3, the conductor section inside the connecting bus is not linearly proportional to the current, because of the skin effect, the conductor section area needs to be added by about 30% on the basis of the linear proportional increase of the current, and the large increase of the conductor section area causes the waste of copper material, which has a great influence on the environment and national strategic energy. INVENTION CONTENTS

[0006] The utility model aims at solving the technical problems of the existing single connecting bus scheme between the gas insulation switch cabinet, such as the installation personnel operating difficultly, the need of redesigning the structure of the switch cabinet body and the waste of copper material caused by the large increase of the conductor section area, and provides a double -deck connecting bus structure.

[0007] In order to realize the above purpose, the technical solution of the utility model is:

[0008] A double -deck connecting bus structure, which is characterized by comprising an upper connecting bus unit, a lower connecting bus unit, M conductive sleeves and M conductive rods, M is the number of cabinets to be connected, M is greater than or equal to 2;

[0009] The upper connecting bus unit comprises M-1 first solid busbars, M upper connectors and M first bolts; the lower connecting bus unit comprises M-1 second solid busbars, M lower connectors and M second bolts;

[0010] The conductive sleeve, the upper connector and the lower connector are insulated on the outside and conductive on the inside;

[0011] M-1 first solid bus bars are physically and electrically connected in the horizontal direction by M-2 upper connectors, and the outer ends of the first solid bus bars at the head and tail are respectively physically and electrically connected with the remaining two upper connectors; M-1 second solid bus bars are physically and electrically connected in the horizontal direction by M-2 lower connectors, and the outer ends of the second solid bus bars at the head and tail are respectively physically and electrically connected with the remaining two lower connectors;

[0012] The lower ends of the M conductive sleeves are respectively connected with the corresponding cabinets to be connected in the vertical direction, and the upper ends are physically and electrically connected with the corresponding lower connectors; the lower end of the upper connector extends into the upper end of the lower connector, or the upper end of the lower connector extends into the lower end of the upper connector, thereby realizing the physical connection between the upper connector and the lower connector;

[0013] The upper ends of the M first bolts are respectively connected with the upper ends of the corresponding upper connectors, and the lower ends are connected with the upper ends of the corresponding conductive rods; the lower ends of the M second bolts are respectively connected with the upper ends of the corresponding conductive sleeves, and the upper ends are connected with the lower ends of the corresponding conductive rods; the M upper connectors and the M lower connectors are electrically connected through the corresponding conductive rods.

[0014] Further, M insulating plugs are further included.

[0015] Two of the M upper connectors are of a three-way structure, and the remaining upper connectors are of a four-way structure; two of the M lower connectors are of a three-way structure, and the remaining lower connectors are of a four-way structure; the three-way structure includes one horizontal port and two vertical ports, and the four-way structure includes two horizontal ports and two vertical ports;

[0016] The conductive structure inside the upper connector and the lower connector includes an integrated upper conductor arranged on the top surface of the horizontal port and an integrated lower conductor arranged on the bottom surface of the horizontal port;

[0017] The M-1 first solid bus bars are physically connected through the horizontal ports of the upper connectors, and are electrically connected through the upper and lower conductors inside the upper connectors; the M-1 second solid bus bars are physically connected through the horizontal ports of the lower connectors, and are electrically connected through the upper and lower conductors inside the lower connectors;

[0018] The lower ends of the M conductive sleeves are respectively installed on the inner side walls of the M cabinets to be connected and electrically connected with the corresponding cabinets to be connected, and the upper ends are physically connected with the vertical ports at the lower ends of the corresponding lower connectors and electrically connected with the lower conductive bodies on the bottom surfaces of the lower connectors; the vertical ports at the lower ends of the upper connectors extend into the vertical ports at the upper ends of the lower connectors, or the vertical ports at the upper ends of the lower connectors extend into the vertical ports at the lower ends of the upper connectors;

[0019] The upper ends of the M conductive rods are in abutment with the lower conductive bodies in the corresponding upper connectors to achieve electrical connection, and the lower ends are in abutment with the upper conductive bodies in the corresponding lower connectors to achieve electrical connection; the upper ends of the M first bolts are respectively connected with the vertical ports at the upper ends of the corresponding upper connectors, and the lower ends extend into the vertical ports at the lower ends and are connected with the upper ends of the conductive rods; the lower ends of the M second bolts are respectively connected with the upper ends of the corresponding conductive sleeves, and the upper ends extend into the vertical ports at the upper ends of the corresponding lower connectors and are connected with the lower ends of the conductive rods.

[0020] The M insulating plugs are respectively arranged in the vertical ports at the upper ends of the M upper connectors.

[0021] Further, the upper ends and the lower ends of the conductive rods are respectively axially provided with threaded holes;

[0022] The first bolt is a double-headed bolt, the upper end of which is fixed on the vertical port at the upper end of the corresponding upper connector through a nut, and the lower end is threadedly connected with the threaded hole at the upper end of the corresponding conductive rod.

[0023] Alternatively, the first bolt is a single-headed bolt, the shank of which threadedly connects the threaded holes at the upper ends of the M upper connectors and the upper ends of the conductive rods.

[0024] Further, the upper end of the conductive sleeve is axially provided with a threaded hole.

[0025] The second bolt is a double-headed bolt, the upper end of which is threadedly connected with the threaded hole at the upper end of the corresponding conductive rod, and the lower end is threadedly connected with the threaded hole at the upper end of the corresponding conductive sleeve.

[0026] Further, the conductive structures inside the upper connector, the lower connector and the conductive sleeve and the insulating structures outside are integrally formed.

[0027] Further, the insulating structures outside the conductive sleeve, the upper connector, the lower connector and the insulating plug are respectively made of epoxy resin material, or rubber material, or cross-linked polyethylene material.

[0028] Further, the conductive structures inside the conductive sleeve, the conductive bodies and the conductive rods are respectively made of copper material or aluminum material.

[0029] The utility model discloses a beneficial effect:

[0030] 1, the utility model provides a kind of double-layer connection bus structure, the physical connection and electrical connection of first solid bus between upper layer are realized through the port of horizontal direction of upper layer connector, the physical connection and electrical connection of second solid bus between lower layer are realized through the port of horizontal direction of lower layer connector, and the fastening connection and electrical connection of upper layer connector and lower layer connector are realized simultaneously through the port of vertical direction of upper layer connector, lower layer connector, electrically conductive rod, first bolt and second bolt;The structure of the two-layer connection bus of the utility model can work simultaneously, share load, to improve the maximum rated current of product.

[0031] 2, the utility model provides a kind of double-layer connection bus structure, keeps the characteristics of original single connection bus, avoids the increase of additional 30% copper material share caused by skin effect, to avoid additional cost and weight increase, and more convenient for on-site operation of installation personnel.

[0032] 3, in the embodiment, the port of vertical direction of lower end of upper layer connector is inserted into the port of vertical direction of upper end of corresponding lower layer connector, or the port of vertical direction of upper end of lower layer connector is inserted into the port of vertical direction of lower end of corresponding upper layer connector, on the basis that the insulation adaptation compression of both is completed, the stability of double-layer connection bus structure is strengthened, and space is saved.

[0033] 4, the electrically conductive structure in the upper layer connector, lower layer connector and electrically conductive sleeve and the insulating structure outside are all set to integrated molding structure, when adjacent first solid bus, adjacent second solid bus, first solid bus and second solid bus and to be connected cabinet are connected, it is convenient to connect and disassemble, when installation personnel operate, it is basically consistent with the scheme of installing single bus, and the operation difficulty of installation personnel is reduced. DRAWINGS

[0034] Figure 1 It is structure schematic drawing of the utility model double-layer connection bus structure embodiment;

[0035] Figure 2 It is the partial enlarged view of the utility model embodiment.

[0036] Specific figure mark is:

[0037] 1, first solid bus;2, upper layer connector;3, first bolt;4, insulating plug;5, second solid bus;6, lower layer connector;7, second bolt;8, electrically conductive sleeve;9, electrically conductive rod;10, upper electrically conductive body;11, lower electrically conductive body. SPECIFIC IMPLEMENTATION

[0038] To make the advantages and features of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0039] like Figure 1 , Figure 2 As shown, a double-layer busbar structure includes an upper-layer busbar unit, a lower-layer busbar unit, three conductive sleeves 8, and three conductive rods 9. The upper-layer busbar unit includes two first solid busbars 1, three upper connectors 2, three first bolts 3, and three insulating plugs 4. Correspondingly, the lower-layer busbar unit includes two second solid busbars 5, three lower connectors 6, and three second bolts 7. Two of the three upper connectors 2 are T-junctions, and the remaining one is a four-way connector. Similarly, two of the three lower connectors 6 are T-junctions, and the remaining one is a four-way connector. One T-junction includes a horizontal port on the right and two vertical ports (top and bottom), another T-junction includes a horizontal port on the left and two vertical ports (top and bottom), and the four-way connector includes two horizontal ports on the left and right and two vertical ports (top and bottom). The upper connector 2 and the lower connector 6 have an insulating structure on the outside and a conductive structure on the inside. Specifically, the conductive structure inside consists of an integrated upper conductor 10 on the top surface of the two horizontal ports and an integrated lower conductor 11 on the bottom surface.

[0040] The inner end of one first solid busbar 1 extends into the left horizontal port of the upper connector 2 of the four-way structure to achieve a physical connection with it. The inner end of another first solid busbar 1 extends into the right horizontal port of the upper connector 2 to achieve a physical connection with it, and both are electrically connected to it through the upper conductor 10 and lower conductor 11 within the upper connector 2. The outer end of the first solid busbar 1 at the beginning extends into the right horizontal port of the upper connector 2 of the three-way structure to achieve a physical connection with it, and is electrically connected to it through the upper conductor 10 and lower conductor 11 within the upper connector 2. The outer end of the first solid busbar 1 at the end extends into the left horizontal port of the upper connector 2 of another three-way structure to achieve a physical connection with it, and is electrically connected to it through the upper conductor 10 and lower conductor 11 within the upper connector 2. The connection relationship between the two second solid busbars 5 and the three lower connectors 6 in the lower connecting busbar unit is similar to the connection relationship between the two first solid busbars 1 and the three upper connectors 2 in the upper connecting busbar unit, and will not be described in detail again.

[0041] The outer part of the conductive sleeve 8 is insulated, and the inner part is conductive. The lower ends of the three conductive sleeves 8 are respectively arranged on the inner side walls of the three cabinets to be connected and electrically connected to the corresponding cabinets to be connected. The upper ends of the three conductive sleeves 8 extend into the vertical ports of the lower ends of the corresponding lower connectors 6 and are physically connected to the lower connectors 6. The conductive structure of the conductive sleeves 8 is electrically connected to the lower conductive bodies 11 on the bottom surfaces of the lower connectors 6.

[0042] The upper ends of the three conductive rods 9 are in abutment with the lower conductive bodies 11 in the corresponding upper connectors 2 to achieve electrical connection. The lower ends of the three conductive rods 9 are in abutment with the upper conductive bodies 10 in the corresponding lower connectors 6 to achieve electrical connection. At the same time, the conductive rods 9 are cooperated with the corresponding first bolts 3 and second bolts 7 to achieve the fixation between the upper connectors 2 and the lower connectors 6. In the embodiment, the first bolts 3 and the second bolts 7 are both double-headed bolts. The upper and lower ends of the conductive rods 9 and the upper end of the conductive sleeve 8 are axially provided with threaded holes. The upper end of the first bolt 3 is fixed on the vertical port at the upper end of the corresponding upper connector 2 by a nut, and the lower end of the first bolt 3 extends into the vertical port at the lower end of the upper connector 2 and is threadedly connected to the threaded hole of the upper end of the corresponding conductive rod 9. The upper end of the second bolt 7 extends into the vertical port at the upper end of the corresponding lower connector 6 and is threadedly connected to the threaded hole of the lower end of the corresponding conductive rod 9. The lower end of the second bolt 7 is threadedly connected to the threaded hole of the upper end of the corresponding conductive sleeve 8. In other embodiments of the utility model, the first bolt 3 can also be designed as a single-headed bolt. The shank of the first bolt 3 passes through the vertical port at the upper end of the corresponding upper connector 2 and is threadedly connected to the threaded hole of the upper end of the conductive rod 9.

[0043] In the embodiment, the vertical port at the lower end of the upper connector 2 extends into the vertical port at the upper end of the corresponding lower connector 6, so that the two connectors are compressed and insulated. The compression and insulation refers to that the interface size of the two connectors is designed to have an excess fit. After the compression and insulation, the excess fit generates a compression force, and the compression force seals the interface, so as to achieve the insulation connection of the two busbars. At the same time, the arrangement saves space and further enhances the stability of the double-layer connection busbar structure. In other embodiments of the utility model, the vertical port at the upper end of the lower connector 6 can also extend into the vertical port at the lower end of the corresponding upper connector 2.

[0044] The insulating structure outside the conductive sleeve 8, the upper connector 2, the lower connector 6 and the insulating plug 4 in the embodiment are all made of epoxy resin material, and in other embodiments, other insulating materials such as rubber and cross-linked polyethylene can also be used. The conductive structure inside the conductive sleeve 8, the upper conductive body 10, the lower conductive body 11 and the conductive rod 9 in the embodiment are all made of copper material, and in other embodiments of the utility model, conductive materials such as aluminum can also be used. At the same time, the conductive structure inside and the insulating structure outside the conductive sleeve 8, the upper connector 2, the lower connector 6 and the conductive sleeve 8 are all set as an integrated molding structure, which is convenient for connection and disassembly when adjacent first solid busbars, adjacent second solid busbars, first solid busbars and second solid busbars and cabinets to be connected are connected, ensures that the operation of the installer is basically consistent with the scheme of installing a single busbar, and reduces the operation difficulty of the installer.

[0045] The number of the conductive sleeve 8, the conductive rod 9, the first solid busbar 1, the upper connector 2, the first bolt 3, the insulating plug 4, the second solid busbar 5, the lower connector 6 and the second bolt 7 in the utility model is determined according to the number of cabinets to be connected, and in the embodiment, the number of cabinets to be connected is three, therefore, the number of the first solid busbar 1 and the second solid busbar 5 is two, and the number of the conductive sleeve 8, the conductive rod 9, the upper connector 2, the first bolt 3, the insulating plug 4, the lower connector 6 and the second bolt 7 is three.

[0046] Combined with the use situation of the current project, the original single connection busbar can be designed as a two-layer connection busbar structure by the utility model, so that the two-layer connection busbars work at the same time and share the load, thereby improving the maximum rated current of the product. For example, the original single connection busbar has 630A, 1250A, 1600A, 2000A and 2500A, and now 3150A large current can be realized, two 1600A connection busbars can be selected for parallel connection, 4000A large current can be realized, two 2000A connection busbars can be selected for parallel connection, and 5000A large current can be realized, two 2500A connection busbars can be selected for parallel connection.

[0047] In the embodiment, the three upper connectors 2 are also provided with vertical ports at the upper end, and the three insulating plugs 4 are arranged in the vertical ports respectively, so as to facilitate the expansion of more layers of connection busbars in the later period and realize more parallel connection schemes.

[0048] The above description is only used to illustrate the technical scheme of the utility model, and is not a limitation. For ordinary professional technicians in the field, the specific technical scheme recorded in the above embodiment can be modified, or some technical features can be replaced, and these modifications or replacements do not make the essence of the corresponding technical scheme deviate from the scope of the technical scheme protected by the utility model.

Claims

1. A double-layer connecting busbar structure, characterized in that: it comprises an upper connecting busbar unit, a lower connecting busbar unit, M conductive sleeves (8) and M conductive rods (9), M being the number of cabinets to be connected, M≥2; the upper connecting busbar unit comprises M-1 first solid busbars (1), M upper connectors (2) and M first bolts (3); the lower connecting busbar unit comprises M-1 second solid busbars (5), M lower connectors (6) and M second bolts (7); the conductive sleeves (8), the upper connectors (2) and the lower connectors (6) are insulated on the outside and conductive on the inside; M-2 upper connectors (2) are arranged between each two of the M-1 first solid busbars (1) to realize physical and electrical connection in the horizontal direction, and the outer ends of the first solid busbars (1) at the head and tail are respectively physically and electrically connected to the remaining two upper connectors (2); M-2 lower connectors (6) are arranged between each two of the M-1 second solid busbars (5) to realize physical and electrical connection in the horizontal direction, and the outer ends of the second solid busbars (5) at the head and tail are respectively physically and electrically connected to the remaining two lower connectors (6); the lower ends of the M conductive sleeves (8) are respectively connected to the corresponding cabinets to be connected, and the upper ends are physically and electrically connected to the corresponding lower connectors (6) in the vertical direction; the lower ends of the upper connectors (2) extend into the upper ends of the lower connectors (6), or the upper ends of the lower connectors (6) extend into the lower ends of the upper connectors (2), to realize physical connection between the upper connectors (2) and the lower connectors (6); the upper ends of the M first bolts (3) are respectively connected to the upper ends of the corresponding upper connectors (2), and the lower ends are connected to the upper ends of the corresponding conductive rods (9); the lower ends of the M second bolts (7) are respectively connected to the upper ends of the corresponding conductive sleeves (8), and the upper ends are connected to the lower ends of the corresponding conductive rods (9); the M upper connectors (2) and the M lower connectors (6) are electrically connected through the corresponding conductive rods (9). 2.The double-layer connecting busbar structure according to claim 1, characterized in that: it further comprises M insulating plugs (4); two of the M upper connectors (2) are three-way structures, and the remaining upper connectors (2) are four-way structures; two of the M lower connectors (6) are three-way structures, and the remaining lower connectors (6) are four-way structures; the three-way structure comprises one horizontal port and two vertical ports, and the four-way structure comprises two horizontal ports and two vertical ports; the conductive structure inside the upper connectors (2) and the lower connectors (6) comprises an integrated upper conductor (10) arranged on the top surface of the two horizontal ports and an integrated lower conductor (11) arranged on the bottom surface. M-1 first solid busbars (1) are connected to each other in pairs and the outer ends of the first solid busbars (1) at both ends are connected to each other through the ports in the horizontal direction of the upper connector (2), and the upper and lower conductive bodies (10) and (11) in the upper connector (2) are electrically connected; The lower ends of the M conductive sleeves (8) are respectively installed on the inner side walls of the M cabinets to be connected, and are electrically connected to the corresponding cabinets to be connected, the upper ends of the conductive sleeves (8) are physically connected to the vertical ports at the lower ends of the lower connector (6), and the lower conductive bodies (11) on the bottom surfaces of the lower connector (6) are electrically connected; the vertical ports at the lower ends of the upper connector (2) are inserted into the vertical ports at the upper ends of the lower connector (6), or the vertical ports at the upper ends of the lower connector (6) are inserted into the vertical ports at the lower ends of the upper connector (2); The upper ends of the M conductive rods (9) are in abutment with the lower conductive bodies (11) in the corresponding upper connector (2) to achieve electrical connection, and the lower ends of the M conductive rods (9) are in abutment with the upper conductive bodies (10) in the corresponding lower connector (6) to achieve electrical connection; the upper ends of the M first bolts (3) are connected to the vertical ports at the upper ends of the corresponding upper connector (2), and the lower ends of the M first bolts (3) are inserted into the vertical ports at the lower ends of the corresponding upper connector (2) and connected to the upper ends of the conductive rods (9); the lower ends of the M second bolts (7) are connected to the upper ends of the corresponding conductive sleeves (8), and the upper ends of the M second bolts (7) are inserted into the vertical ports at the upper ends of the corresponding lower connector (6) and connected to the lower ends of the conductive rods (9); M insulation plugs (4) are respectively arranged in the vertical ports at the upper ends of the M upper connectors (2).

3. The double-layer connecting busbar structure according to claim 2, wherein: the upper end and the lower end of the conductive rod (9) are respectively provided with a threaded hole in the axial direction; the first bolt (3) is a double-headed bolt, the upper end of the first bolt (3) is fixed on the vertical port at the upper end of the corresponding upper connector (2) through a nut, and the lower end of the first bolt (3) is threadedly connected with the threaded hole of the upper end of the corresponding conductive rod (9); or, the first bolt (3) is a single-headed bolt, the screw rod of the first bolt (3) passes through the vertical ports at the upper ends of the M upper connectors (2) and is threadedly connected with the threaded hole of the upper end of the conductive rod (9).

4. The double-layer connecting busbar structure according to claim 3, wherein: the upper end of the conductive sleeve (8) is provided with a threaded hole in the axial direction; the second bolt (7) is a double-headed bolt, the upper end of the second bolt (7) is threadedly connected with the threaded hole of the upper end of the corresponding conductive rod (9), and the lower end of the second bolt (7) is threadedly connected with the threaded hole of the upper end of the corresponding conductive sleeve (8).

5. The double-layer connecting busbar structure according to any one of claims 1-4, wherein: the conductive structures inside the upper connector (2), the lower connector (6) and the conductive sleeve (8) and the insulation structures outside the upper connector (2), the lower connector (6) and the conductive sleeve (8) are integrally formed.

6. The double-layer connecting busbar structure according to claim 1, characterized in that: The conductive sleeve (8), the upper connector (2), the lower connector (6), the insulating structure outside the upper connector (2) and the lower connector (6), and the insulating plug (4) are respectively made of epoxy resin material, or rubber material, or cross-linked polyethylene material.

7. The double-layer connecting busbar structure according to claim 2, characterized in that: The conductive structure inside the conductive sleeve (8), the upper conductive body (10), the lower conductive body (11), and the conductive rod (9) are respectively made of copper material, or aluminum material.

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