Special-shaped row bus, novel bus duct and flexible plugging structure thereof

Abstract

The invention relates to the technical field of bus duct structures, and discloses a special-shaped bus duct, a novel bus duct and a flexible plugging structure thereof.For the special-shaped bus duct, a matching groove is formed in the end of the bus duct in the height direction, the depth of the matching groove is smaller than half of the height of the bus duct, and the extension length of the matching groove is the same as or different from that of the bus duct; and the notch width of the matching groove is not greater than the groove cavity width. The matching grooves at the two ends of the bus bar in the height direction are communicated through a plurality of distributed communicating holes; according to the invention, the H-shaped conductor bus structure is designed, so that an additional plugging pile head does not need to be welded on the bus, the existing plugging structure and process design are simplified, and the material consumption and the manufacturing cost of the bus are effectively reduced; the novel plugging structure can easily realize three-surface contact between the bus duct and the pins of the plugging box, and the excessive contact surfaces not only improve the current-carrying capability of the pins of the plugging box, but also greatly improve the reliability and firmness of contact.

Description

Technical Field

[0001] The invention relates to the technical field of bus duct structures, and in particular to a special-shaped busbar, a novel bus duct and a flexible plug-in structure thereof. Background Art

[0002] In the power transmission and distribution industry, bus ducts have been widely used; and the conductors of common bus ducts are generally rounded rectangles (such as Figure 1 ), and some manufacturers design it into a special-shaped rectangular conductor with grooves (such as Figure 2 ), for the mainstream dense bus duct in the industry, this design has two disadvantages:

[0003] 1. The general plug-in box is designed with two-piece copper plug-in (such as Figure 3 ), the contact with the conductor in the bus duct is two line contacts (actually two tiny surface contacts due to the elastic deformation of the material); and when there is a position and / or angle deviation between the pin and the plug head, it is easy to cause a single-sided virtual connection;

[0004] 2. When the busbar is flooded during storage, transportation or use, or condensation accumulates inside, causing the insulation resistance to drop, simple measures such as heating and ventilation with a small load require a long time because there is no gap between the conductors of the busbar. Generally, it is necessary to return to the factory to remove the outer casing and the insulating material on the busbar surface, and reassemble them after drying. The production, transportation and time costs of troubleshooting are high, which is not conducive to later maintenance. Summary of the invention

[0005] The purpose of this section is to summarize some aspects of embodiments of the present invention and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the specification abstract and the invention title of this application to avoid blurring the purpose of this section, the specification abstract and the invention title, and such simplifications or omissions cannot be used to limit the scope of the present invention.

[0006] In view of the above problems existing in busbar arrangement in the existing bus duct, the present invention is proposed.

[0007] Therefore, an object of the present invention is to provide a special-shaped busbar, which aims to solve the problem of poor contact stability when the existing busbar conductor is connected to the pins of the plug-in box.

[0008] To solve the above technical problems, the present invention provides the following technical solutions: a special-shaped busbar, which has a matching groove at the end in the height direction, the depth of the matching groove is less than half the height of the busbar, and its extension length is the same as or different from the extension length of the busbar.

[0009] As a preferred solution of the special-shaped busbar of the present invention, the slot width of the matching slot is not greater than the slot cavity width.

[0010] As a preferred solution of the special-shaped busbar of the present invention, the matching grooves at both ends of the busbar in height direction are connected through a plurality of distributed connecting holes.

[0011] As a preferred solution of the special-shaped busbar of the present invention, the busbar is provided with a plurality of through holes in the middle of the side wall in the height direction.

[0012] Another object of the present invention is to provide a new bus duct, which aims to solve the problems of poor contact stability and poor maintainability when the conductors in the existing bus duct are connected to the pins of the plug-in box.

[0013] In order to solve the above technical problems, the present invention provides the following technical solutions: a new type of bus duct, which includes the above-mentioned special-shaped busbar row, and also includes an insulating layer, which is covered on the outer wall of the busbar row; a shell assembly is arranged on the outside of the busbar group, which includes a cover plate profile arranged at both ends of the busbar group in the height direction, a side plate profile arranged on both sides of the busbar group in the height direction, and a rivet connecting the cover plate profile and the side plate profile into one.

[0014] As a preferred solution of the novel bus duct described in the present invention, the busbar group includes a plurality of busbars arranged side by side.

[0015] As a preferred solution of the novel bus duct described in the present invention, the shell assembly further includes through-core bolts, which pass through the through holes of each busbar row and firmly connect each busbar row.

[0016] Another object of the present invention is to provide a flexible plug-in structure, which aims to solve the problems of difficult connection and poor contact stability when the plug pins of the existing plug-in box are connected to the conductors in the bus duct.

[0017] In order to solve the above technical problems, the present invention provides the following technical solutions: a flexible plug-in structure, which includes the above-mentioned new bus duct, and also includes a plug-in socket, which includes an outer shell and a plug-in component arranged in the outer shell; the free end of the plug-in component can be plugged into the mating groove.

[0018] As a preferred solution of the flexible plug-in structure of the present invention, the plug-in component includes a plug-in board and elastic copper sheets arranged on both sides of the free end of the plug-in board.

[0019] As a preferred solution of the flexible plug structure of the present invention, wherein: the height of the elastic copper sheet is greater than the depth of the matching groove, which is divided into a connection section and a contact section; the width of the two elastic copper sheets gradually decreases from the middle of the contact section to the two ends; in the initial state, the maximum width T of the two elastic copper sheets in the contact section max Greater than the slot width C of the matching slot k , and the width T at the end of the contact section d Smaller than the slot width C of the matching slot k .

[0020] Beneficial effects of the present invention:

[0021] 1. The present invention designs an H-shaped conductor busbar structure, so that it is no longer necessary to weld additional plug-in piles on the busbar, which simplifies the existing plug-in structure and process design, and effectively reduces the material consumption and manufacturing cost of the busbar;

[0022] 2. The new plug-in structure can easily achieve three-sided contact between the bus duct and the plug-in box pins, and the extra contact surface not only improves the current carrying capacity of the plug-in box pins, but also greatly improves the reliability and firmness of the contact;

[0023] 3. The open busbars can facilitate the introduction of the plug pins into the plug-in box structure, and adjust the position and angle deviation between the pins and the busbars within a certain range to achieve flexible plug-in;

[0024] 4. For open busbars, when the insulation resistance decreases due to water ingress or condensation in the bus duct, the H-type groove can be used to facilitate treatment through small load power heating, ventilation and other measures. The operation is simple and the maintainability is strong. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative labor. Among them:

[0026] Figure 1 Schematic diagram of the cross-section of a bus duct conductor in a rounded rectangle.

[0027] Figure 2 Schematic diagram of a special-shaped rectangular bus duct conductor with grooves on both sides.

[0028] Figure 3 The diagram is a schematic diagram of the existing common two-piece copper plug-in structure and the rounded rectangular bus duct conductor plug-in structure.

[0029] Figure 4This is a schematic diagram of the first structure of the special-shaped busbar of the present invention.

[0030] Figure 5 This is a schematic diagram of the second structure of the special-shaped busbar of the present invention.

[0031] Figure 6 This is a schematic diagram of the third structure of the special-shaped busbar of the present invention.

[0032] Figure 7 It is a schematic diagram of the fourth structure of the special-shaped busbar of the present invention.

[0033] Figure 8 The figure is a schematic diagram of the cross-sectional structure of a new type of bus duct with special-shaped busbars according to the present invention.

[0034] Fig. 9 The cross-sectional structure diagram of the novel bus duct with special-shaped busbars of the present invention is provided with through-core bolts.

[0035] Fig.10 It is a structural schematic diagram of the connection state of the flexible plug structure of the present invention.

[0036] Fig.11 It is a schematic diagram of the separation structure before assembly of the flexible plug structure of the present invention. DETAILED DESCRIPTION

[0037] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0038] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0039] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive with other embodiments.

[0040] Secondly, the present invention is described in detail with reference to the schematic diagram. When describing the embodiments of the present invention in detail, for the sake of convenience, the cross-sectional diagrams showing the device structure will not be partially enlarged according to the general scale, and the schematic diagrams are only examples, which should not limit the scope of protection of the present invention. In addition, in actual production, the three-dimensional dimensions of length, width and depth should be included.

[0041] Example 1

[0042] Reference Figures 4 to 7 , which is the first embodiment of the present invention, provides a special-shaped busbar. This busbar 100 is different from the busbar (busbar 100) in the existing bus duct. Specifically, this busbar 100 is provided with a matching groove 101 at the end in the height direction. It should be noted that this matching groove 101 can be set at one end or both ends in the height direction of the busbar 100, and can be set according to the actual installation environment; in this solution, it is preferred that the matching groove 101 is provided at both ends to form a special-shaped structure with an H-shaped cross-section. For this, it is required that the depth of the matching groove 101 is less than half of the height of the busbar 100 to ensure that the matching grooves 101 at both ends are independent of each other, and the extension length of the matching groove 101 can be the same as the extension length of the busbar 100, or different from the extension length of the busbar 100 (it can only be a matching section connected to the plug-in box). In this solution, it is preferred that the extension length of the matching groove 101 is the same as the extension length of the busbar 100.

[0043] Furthermore, the slot width C of the matching slot 101 is required to be k Not greater than the slot width C q In this regard,

[0044] It can be understood that the groove width C of the matching groove 101 q Equal to or greater than the slot width C k When it is equal to, the matching groove 101 is a rectangular groove; and when it is greater than, the cavity width of the matching groove 101 is larger, and its cross-sectional shape is an ellipsoid, a rhombus or a circle, etc. In this embodiment, the cross-sectional shape of the matching groove 101 is preferably an ellipse.

[0045] Example 2

[0046] Reference Figure 4 and Fig. 9 , which is the second embodiment of the present invention, is based on the solution in embodiment 1, and is different from the first embodiment in that the matching grooves 101 at both ends of the busbar 100 in the height direction are connected through a plurality of distributed connecting holes K.

[0047] Specifically, the matching grooves 101 at both ends of the busbar 100 are penetrated by connecting holes K. The connecting holes K can be evenly distributed in multiple groups at intervals. The purpose is to utilize the grooves formed by the matching grooves 101 to allow water vapor such as water ingress or condensation in the busbar to be collected in the grooves. The heat brought by the busbar 100 after being energized can be utilized for rapid evaporation and dehumidification; or dehumidification can be performed through ventilation and other measures.

[0048] A plurality of through holes G are provided in the middle of the side wall in the height direction of the busbar 100 for installation of the busbar 100 .

[0049] Example 3

[0050] Reference Figure 8 and Fig. 9 , which is the third embodiment of the present invention, provides a new type of bus duct, which includes the special-shaped bus bar 100 in the above-mentioned embodiment 1 or 2, and also includes an insulating layer 200 and a shell assembly 300, wherein the insulating layer 200 is coated on the outer wall of the bus bar 100; it is used to coat each bus bar 100 to form insulation isolation.

[0051] As for the shell assembly 300, it is arranged as a whole on the outside of the busbar group M, and includes a cover plate profile 301 arranged at both ends of the busbar group M in the height direction, a side plate profile 302 arranged at both sides of the busbar group M in the height direction, and a rivet 303 connecting the cover plate profile 301 and the side plate profile 302 together.

[0052] The busbar group M includes a plurality of busbars 100 arranged side by side. An insulating layer or accessories for stabilization may be provided between adjacent busbars 100.

[0053] In this regard, it should be noted that the housing assembly 300 is the outer housing of the bus duct, which fixes and protects the internal busbar group M; the paired cover plate profiles 301 and side plate profiles 302 are combined to form a square hollow frame structure, which is wrapped around the outside of the busbar group M, and the rivets 303 fix the contact edges of the cover plate profile 301 and the side plate profile 302 together along the length direction of the profile. It should be added that this bus duct structure also includes other auxiliary connection accessories, which will not be described in detail in this embodiment.

[0054] Furthermore, different from the general assembly structure, the shell assembly 300 may also include a through-core bolt 304, which passes through the through hole G of each row of busbars 100 and firmly connects each row of busbars 100; this method can not only increase the structural strength of the longer bus duct, but also increase its short-circuit strength.

[0055] Example 4

[0056] Reference Fig.10 and Fig.11 , which is the fourth embodiment of the present invention, provides a flexible plug-in structure, which includes the above-mentioned new bus duct and a plug-in socket 400 of a plug-in box connected to the bus duct.

[0057] Specifically, the socket 400 includes an outer shell 401 ( Fig.10 and Fig.11The plug-in connector 402 is a partially schematic diagram of a plug-in connector 402 disposed in the outer shell 401; the free end of the plug-in connector 402 can be plugged into the matching slot 101. The plug-in connector 402 is the conductor part connecting the plug-in box and the bus duct, forming a plug pin; one end connected to the plug-in box is a fixed end, and the other end is a pluggable free end.

[0058] Furthermore, the plug-in connector 402 includes a plug-in board 402a and elastic copper sheets 402b disposed on both sides of the free end of the plug-in board 402a. The plug-in board 402a is a conductor block, which may be in a "T" shape, a "cross" shape, or an "L" shape, etc., one end of which is limitedly connected to the outer shell 401 of the plug-in box, and the other end extends outside the plug-in box, and the elastic copper sheets 402b are respectively installed on both sides of the side wall.

[0059] For the elastic copper sheet 402b, specifically, its overall height needs to be greater than the depth of the matching groove 101, so that when it is inserted into the matching groove 101, its end can touch the bottom side wall of the groove cavity of the matching groove 101; the elastic copper sheet 402b is divided into a connecting section A and a contact section B as a whole, and the contact section B and the connecting section A are not in the same plane, that is, the contact section B is protruding or recessed from the surface of the connecting section A.

[0060] Preferably, the elastic copper sheets 402b disposed on both sides of the plug board 402a adopt the same structure, but of course different structures are also acceptable. Preferably, the elastic copper sheets 402b adopt the same structure and are installed in pairs, so that the contact sections B protruding from the surface of the connection section A are away from each other, thereby forming a state where the width gradually decreases from the middle of the contact section B to both ends; it should be noted that the shape of the contact section B is preferably an elliptical arc that can match the shape of the matching groove 101, and of course it can also be a matching rhombus or capsule shape.

[0061] Furthermore, in the initial state, the maximum width T of the two elastic copper sheets 402b in the contact section B is max Greater than the slot width C of the matching slot 101 k The purpose is that when the two elastic copper sheets 402b are in the plugged state, they have elastic potential energy to rebound, thereby maintaining the tension force to form a stable contact with the matching groove 101; and the end width T of the contact section B d Smaller than the slot width C of the matching slot 101 k The purpose is to facilitate the insertion of the two elastic copper sheets 402b into the matching groove 101, and the smaller the degree, the higher the fault tolerance during insertion.

[0062] Through this new plug-in structure, the two-point surface contact when connecting the traditional plug-in pile head and the plug-in box can be transformed into three-point surface contact. The extra contact surface not only improves the current-carrying capacity of the plug-in conductor, but also ensures the reliability of the plug-in.

[0063] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A special-shaped busbar (100), characterized in that: The busbar (100) is provided with a matching groove (101) at the end in the height direction, the depth of the matching groove (101) is less than half the height of the busbar (100), and its extension length is the same as or different from the extension length of the busbar (100).

2. The special-shaped busbar (100) according to claim 1, characterized in that: The slot width C of the matching slot (101) k Not greater than the slot width C q .

3. The special-shaped busbar (100) according to claim 2, characterized in that: The matching grooves (101) at both ends of the busbar row (100) in the height direction are connected through a plurality of distributed communication holes (K).

4. The special-shaped busbar (100) according to claim 2 or 3, characterized in that: The busbar row (100) is provided with a plurality of through holes (G) in the middle of the side wall in the height direction.

5. A new type of bus duct, characterized by: The method comprises the special-shaped busbar (100) as claimed in any one of claims 1 to 4, and further comprises: An insulating layer (200) is coated on the outer wall of the busbar (100); The shell assembly (300) is arranged on the outside of the busbar group (M), and comprises cover plate profiles (301) arranged at both ends of the busbar group (M) in the height direction, side plate profiles (302) arranged at both sides of the busbar group (M) in the height direction, and rivets (303) connecting the cover plate profile (301) and the side plate profile (302) together.

6. The novel bus duct according to claim 5 is characterized in that: The busbar group (M) comprises a plurality of busbars (100) arranged side by side.

7. The new bus duct according to claim 5 or 6, characterized in that: The shell assembly (300) also includes a through-core bolt (304), which passes through the through hole (G) of each busbar row (100) and firmly connects each busbar row (100).

8. A flexible plug structure, characterized in that: The novel bus duct comprises any one of claims 5 to 7, and further comprises: The plug socket (400) comprises an outer shell (401) and a plug connector (402) arranged in the outer shell (401); the free end of the plug connector (402) can be plugged into the matching groove (101).

9. The flexible plug structure according to claim 8, characterized in that: The plug-in connector (402) comprises a plug-in board (402a) and elastic copper sheets (402b) arranged on both sides of the free end of the plug-in board (402a).

10. The flexible plug structure according to claim 9, characterized in that: The height of the elastic copper sheet (402b) is greater than the depth of the matching groove (101), and is divided into a connecting section (A) and a contact section (B); The width of the two elastic copper sheets (402b) gradually decreases from the middle of the contact section (B) to both ends; In the initial state, the maximum width T of the two elastic copper sheets (402b) in the contact section (B) is max Greater than the slot width C of the matching slot (101) k , and the width T at the end of the contact section (B) d Smaller than the slot width C of the matching slot (101) k .

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