Single-side fixed side combined cabinet bus connector

Abstract

The utility model provides a unilaterally fixed side combined cabinet bus connector, which comprises a bus socket (01), a bus connector (02), a contact finger (03) and a locking bolt (04), and is characterized in that a conductor of the bus socket (01) is electrically connected with a conductor of the bus connector (02) through the contact finger (03); the overall dimension of the bus socket (01) is consistent with the overall dimension of a bus socket of a state grid standardized side combined cabinet, and the overall dimension of the bus connector (02) is consistent with the overall dimension of a bus connector of the state grid standardized side combined cabinet. By adopting the bus connector provided by the utility model, the installation steps can be decomposed, and each step can be standardized for installation, so that the control of the installation quality and the improvement of the installation efficiency are facilitated, and the situations of slipping, difficult alignment, troublesome installation and the like of the side combined cabinet bus connector provided by the state grid company in the installation process can be avoided; and the installation problem of the existing side combined cabinet bus connector can be solved.

Description

Technical Field

[0001] The utility model relates to the field of electrical equipment, in particular to a busbar connector. Background Art

[0002] There are two main types of cabinet connection for distribution cabinets: top busbar connection and side cabinet busbar connection. Among them, top busbar connection has not yet formed a national or industry standard, and the side cabinet busbar connector standard proposed by State Grid Corporation of China in 2019, "Standardized Design and Customization Scheme for 12 kV Ring Network Cabinet (Box) (2019 Edition)", has now become a widely adopted implementation standard in the industry.

[0003] Please see attached Figure 1 , is the schematic diagram of the installation and matching of the busbar connector of the State Grid standardized side-connected cabinet. In order to clarify the main part and facilitate explanation, the cabinet part was simplified when drawing. In actual installation, the busbar socket is an integral part of the distribution cabinet. In actual use, it is found that when installing the busbar connector of the side-connected cabinet proposed by the State Grid Corporation, the busbar connector needs to be placed in the middle of the two distribution cabinets by hand or tools, and then the two groups of distribution cabinets are pushed to the middle to install it in place (the standard for installation is that the gap between the busbar sockets is 32mm). However, in order to achieve waterproof and dustproof and ensure insulation strength, the overlap surface of the busbar connector of the side-connected cabinet is designed with an interference fit. This means that the busbar connector of the side-connected cabinet must be supported by a support to prevent it from falling before it can be installed. The spacing requirement after installation is 32mm. Since the installation gap requirement is very small, it is not only difficult to align the position during installation, but also the busbar connector is easy to fall during installation, the installation efficiency is very low, and it is very troublesome to adjust.

[0004] In view of this, if a side-connected cabinet busbar connector that can be fixed on one side can be designed, so that it can be installed and fixed on one side first, and then the cabinet on the other side can be pushed in to complete the installation, the installation difficulty can be greatly reduced and the installation efficiency can be improved, which has great practical significance for the use of the side-connected cabinet busbar of the distribution cabinet. Utility Model Content

[0005] In order to solve the problems in the prior art, the utility model provides a busbar connector for side-connected cabinets fixed on one side, comprising a busbar socket, a busbar connector, a contact finger and a locking bolt, wherein the contact finger electrically connects the conductor of the busbar socket with the conductor of the busbar connector; the outer dimensions of the busbar socket are consistent with those of the busbar socket of the State Grid standardized side-connected cabinet, and the outer dimensions of the busbar connector are consistent with those of the busbar connector of the State Grid standardized side-connected cabinet; the outer shape of the conductor of the busbar socket is cylindrical, and the outer diameter of the cylinder is smaller than the inner diameter of the conductor of the busbar connector; the busbar socket and the busbar connector are fixedly connected by locking bolts, the center of the busbar socket conductor is provided with an internal threaded hole, the end of the busbar socket conductor is provided with a first guide, the main body of the busbar connector is a copper conductor and an insulating layer, wherein the copper conductor is placed in the center of the insulating layer, and the two are coaxially designed; symmetrical countersunk holes, a first countersunk hole, a second countersunk hole and a through hole are provided inside the copper conductor, wherein the first countersunk hole matches the outer diameter size of the conductor of the busbar socket, the second countersunk hole matches the cup head size of the locking bolt, and the through hole matches the thread size of the locking bolt.

[0006] As a further improvement of the present invention, a plurality of anti-slip grooves are symmetrically arranged on both sides of the first countersunk hole of the copper conductor of the busbar connector for installing and fixing the contact fingers.

[0007] As a further improvement of the present invention, the contact fingers are arranged on the conductor of the busbar socket, and in this case the conductor of the busbar connector is in a round tube shape.

[0008] As a further improvement of the utility model, the size of the internal thread hole is M6-M12, the thread depth is 10-30 mm, and the thread end is provided with a chamfer.

[0009] As a further improvement of the utility model, the first guide is designed as a slope with rounded edges and the size of the slope is 1 to 5 mm.

[0010] As a further improvement of the utility model, the copper conductor and the insulating layer are integrally formed.

[0011] As a further improvement of the utility model, the inner diameter of the first countersunk hole is larger than the outer diameter of the conductor by 0.1 to 0.3 mm, the inner diameter of the second countersunk hole is larger than the outer diameter of the cup head by 0.5 to 2 mm, and the through hole is larger than the major diameter of the thread by 0.5 to 1 mm.

[0012] As a further improvement of the utility model, a second guide is provided at the end of the first countersunk hole of the copper conductor, with a slope design and rounded edges, and the size of the slope is 1 to 5 mm.

[0013] As a further improvement of the present invention, the end of the second countersunk hole of the copper conductor is provided with a rounded corner, and the size of the rounded corner is R0.5-R2mm.

[0014] As a further improvement of the utility model, a semiconductive layer is provided on the inner wall surface of the insulating layer.

[0015] The beneficial effects of the utility model are:

[0016] By adopting the busbar connector of the utility model, the installation steps can be decomposed, and each step can be installed in a standardized manner, which helps to control the installation quality and improve the installation efficiency. It can avoid the problems of slipping, difficult alignment, and troublesome installation encountered during the installation of the side-connected cabinet busbar connector proposed by the State Grid Corporation, and helps to solve the installation problems of the existing side-connected cabinet busbar connector. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the busbar installation coordination of the China Network standardized side-connected cabinet in the prior art;

[0018] Figure 2 This is a schematic diagram of busbar installation for side-by-side cabinets using the utility model;

[0019] Figure 3 It is an exploded diagram of busbar installation of side-by-side cabinets adopting the utility model;

[0020] Figure 4 This is a structural diagram of an epoxy base using the utility model;

[0021] Figure 5 This is a structural diagram of a side female connection using the utility model;

[0022] Figure 6 This is a structural diagram of a locking bolt using the utility model;

[0023] Figure 7 A three-dimensional exploded diagram of the busbar installation of the side-connected cabinet using the utility model;

[0024] Figure 8 The utility model is used for the installation of the busbars of the side-connected cabinets with a three-dimensional exploded cross-sectional view.

[0025] The names of the components in the figure are as follows:

[0026] Busbar socket 01, busbar connector 02, contact finger 03, locking bolt 04, outer diameter 11, internal thread hole 12, first guide 13, copper conductor 21, insulating layer 22, second guide 201, first countersunk hole 202, second countersunk hole 203, through hole 204, anti-slip groove 205, thread 41, cup head 42, hexagonal wrench position 43. DETAILED DESCRIPTION

[0027] The utility model is further described below in conjunction with the accompanying drawings.

[0028] like Figure 3 , Figure 7and Figure 8 As shown, a busbar connector for side-connected cabinets fixed on one side comprises a busbar socket 01, a busbar connector 02, contacts 03 and locking bolts 04.

[0029] Please see attached Figure 4 , is the busbar socket structure diagram of the utility model. For universality and versatility, the external dimensions of the busbar socket 01 of the utility model are consistent with the busbar socket of the State Grid standardized side-joined cabinet. In order to facilitate installation, a special design is made for the conductor connection between the busbar socket 01 and the busbar connector 02. The conductor is cylindrical in shape, and the outer diameter 11 of the conductor cylinder of the busbar socket 01 is smaller than the inner diameter of the conductor of the busbar connector 02; in order to fix the busbar socket 01 with the busbar connector 02, an internal threaded hole 12 is provided at the center of the busbar socket conductor, and its size is preferably M6~M12, and the thread depth is preferably 10~30mm. For easy installation, the thread end is chamfered; in order to facilitate the quick alignment of the busbar connector 02 and the busbar socket 01 during installation, a first guide 13 is provided at the end of the conductor of the busbar socket 01, and its design method is a slope design with rounded edges, and the size of the slope is preferably 1~5mm.

[0030] Please see attached Figure 5, is a structural diagram of the busbar connector of the utility model. For universality and versatility, the external dimensions of the busbar connector 02 of the utility model are consistent with the busbar connector of the State Grid standardized side-connected cabinet, and its main body is a copper conductor 21 and an insulating layer 22. Among them, the copper conductor 21 is placed in the center of the insulating layer 22, and the two are coaxially designed; in order to fix the insulating layer 22 at the same time when the copper conductor 21 of the busbar connector 02 is locked with the conductor internal thread of the busbar socket 01, it is necessary to place the copper conductor 21 in the mold and form it as a whole when producing the insulating layer 22. In order to improve the tightness of the two, before the production of the insulating layer 22, a coupling agent can be applied to the area where the surface of the copper conductor 21 contacts the insulating layer 22, and the surface of the copper conductor 21 can also be polished with coarse sandpaper or sandblasted to increase the specific surface area and surface convexity and concaveness, thereby increasing the bonding effect; the copper conductor 21 is provided with symmetrical countersunk holes inside, including a first countersunk hole 202, a second countersunk hole 203 and a through hole 204, wherein the first countersunk hole 202, the second countersunk hole 203 and the through hole 204, wherein the first The countersunk hole 202 is matched with the conductor outer diameter 11 of the busbar socket 01, and the inner diameter of the first countersunk hole 202 is larger than the conductor outer diameter 11, preferably by 0.1 to 0.3 mm. The second countersunk hole 203 is matched with the cup head 42 of the locking bolt, and the inner diameter of the second countersunk hole 203 is larger than the outer diameter of the cup head 42 by 0.5 to 2 mm. The through hole 204 is matched with the thread 41 of the locking bolt, and the through hole 204 is larger than the major diameter of the thread 41 by 0.5 to 1 mm. In order to facilitate the quick alignment of the busbar connector 02 and the busbar socket 01 during installation, a second guide 201 is provided at the end of the first countersunk hole 202 of the copper conductor 21, and the design method is a slope design with rounded edges. The size of the slope is preferably 1 to 5 mm. Please refer to the attached Figure 3 and attached Figure 5In order to make the busbar connector 02 and the busbar socket 01 have a reliable electrical connection, four anti-skid grooves 205 are symmetrically arranged on both sides of the first countersunk hole 202 of the copper conductor of the busbar connector 02 for installing and fixing the contact fingers 03. The size of the anti-skid grooves 205 is designed according to the selection of the contact fingers 03. The selection of the contact fingers 03 is selected according to the current carrying capacity, the number of plugging and unplugging times, and the design life. When the design current carrying capacity decreases, the number of arranged contact fingers 03 can be reduced. When the design current carrying capacity increases greatly, the number of contact fingers 03 can also be appropriately increased. For the convenience of installation, the design position of the contact fingers 03 can also be designed to the conductor of the busbar socket 01. At this time, the conductor of the busbar connector 02 is a round tube; using the contact The conductor of the bus socket 01 and the conductor of the bus connector 02 are electrically connected in a flexible manner by referring to 03. At the same time, since there is a size difference between the outer diameter of the conductor of the bus socket 01 and the inner diameter of the conductor of the bus connector 02, there is a large installation margin for its installation, and it can still be reliably electrically connected when the position size has a small range of deviation, which reduces the requirements for installation alignment and improves safety performance. In order to prevent metal chips from falling off during installation, the end of the second countersunk hole 203 of the copper conductor 21 is rounded, and the size of the rounded corner is preferably R0.5~R2mm. In order to increase the service life and prevent local discharge and internal creepage, a semi-conductive layer is applied to the surface of the inner wall of the insulating layer 22.

[0031] Please see attached Figure 6 , which is a structural diagram of the locking bolt of the utility model. The thread 41 can be selected according to the size of the pre-tightening force, preferably M6~M12, and the thread length matches the size of the internal thread 12 of the busbar socket 01. It can be designed as a full-thread screw when necessary; the outer diameter and height of the cup head 42 can be designed according to the size of the copper conductor 21, and it is not necessary to use the standard size; the size and depth of the hexagonal wrench position 43 can be designed according to the size of the cup head 42, and it is not necessary to use the standard size; the material of the locking bolt is preferably demagnetized stainless steel or copper.

[0032] like Figure 3 and Figure 7 As shown, the steps for installing the power distribution cabinet side cabinets using the utility model are as follows:

[0033] Step 1: Install the contact finger 03 into the busbar connector 02;

[0034] Step 2: Clean the mating conical surfaces of the busbar socket 01 and the busbar connector 02, and apply silicone grease for lubrication;

[0035] Step 3: Push the busbar connector 02 into the busbar socket 01, and then fix the busbar connector 02 and the busbar socket 01 with the locking bolts 04;

[0036] Step 4: Clean the mating conical surfaces of the busbar socket 01 and the busbar connector 02 on the other side, and apply silicone grease for lubrication;

[0037] Step 5: Push the busbar socket 01 on the other side onto the busbar connector 02. The installation is complete.

[0038] By adopting the busbar connector of the utility model, the installation steps can be decomposed, and each step can be installed in a standardized manner, which helps to control the installation quality and improve the installation efficiency. It can avoid the slipping and installation troubles encountered by the side-connected cabinet busbar connector proposed by the State Grid Corporation during the installation process, and help solve the installation problems of the existing side-connected cabinet busbar connector.

[0039] By adopting the side-connected cabinet busbar connector of the utility model, the busbar connector 02 can be first installed and fixed to the busbar socket 01 of the distribution cabinet on one side during installation. This solves the problem that the busbar connector 02 needs to be supported by hands or tools when installing the State Grid standardized side-connected cabinet busbar connector; at the same time, there is no line of sight obstruction in the single-sided installation, so it is very convenient to align the position, the installation effect can be accurately controlled, and it helps to improve the installation quality; in addition, the step-by-step installation can standardize the operation process and control the quality of key links and steps, which not only improves the installation efficiency, but also improves the installation quality, and avoids problems such as slipping of installation parts and difficulty in alignment.

[0040] The above contents are further detailed descriptions of the present invention in combination with specific preferred implementations, and the specific implementation of the present invention cannot be considered to be limited to these descriptions. For ordinary technicians in the technical field to which the present invention belongs, several simple deductions or substitutions can be made without departing from the concept of the present invention, which should be regarded as falling within the protection scope of the present invention.

Claims

1. A busbar connector for side-connected cabinets fixed on one side, characterized in that: The utility model comprises a busbar socket (01), a busbar connector (02), a contact finger (03) and a locking bolt (04), wherein the contact finger (03) electrically connects the conductor of the busbar socket (01) with the conductor of the busbar connector (02); the outer dimensions of the busbar socket (01) are consistent with the busbar socket of the state grid standard side parallel cabinet, and the outer dimensions of the busbar connector (02) are consistent with the busbar connector of the state grid standard side parallel cabinet; the outer shape of the conductor of the busbar socket (01) is cylindrical, and the outer diameter (11) of the cylinder is smaller than the inner diameter of the conductor of the busbar connector (02); the busbar socket (01) and the busbar connector (02) are fixedly connected by the locking bolt (04), and the busbar socket (01) An internal threaded hole (12) is arranged at the center of the conductor, a first guide (13) is arranged at the end of the conductor of the busbar socket (01), and the main body of the busbar connector (02) is a copper conductor (21) and an insulating layer (22), wherein the copper conductor (21) is placed at the exact center of the insulating layer (22), and the two are coaxially designed; symmetrical countersunk holes are arranged inside the copper conductor (21), namely, a first countersunk hole (202), a second countersunk hole (203) and a through hole (204), wherein the first countersunk hole (202) matches the outer diameter size of the conductor of the busbar socket (01), the second countersunk hole (203) matches the size of the cup head (42) of the locking bolt, and the through hole (204) matches the size of the thread (41) of the locking bolt.

2. A busbar connector for side-connected cabinets fixed on one side according to claim 1, characterized in that: A plurality of anti-slip grooves (205) are symmetrically arranged on both sides of the first countersunk hole (202) of the copper conductor of the busbar connector (02) for mounting and fixing the contact fingers (03).

3. The busbar connector for side-connected cabinets fixed on one side according to claim 1, characterized in that: The contact finger (03) is arranged on the conductor of the busbar socket (01), and in this case, the conductor of the busbar connector (02) is in the shape of a circular tube.

4. The busbar connector for parallel cabinets fixed on one side according to claim 1, characterized in that: The size of the internal thread hole (12) is M6-M12, the thread depth is 10-30 mm, and the thread end is chamfered.

5. The busbar connector for parallel cabinets fixed on one side according to claim 1, characterized in that: The first guide (13) is designed as a slope with rounded edges and a slope size of 1 to 5 mm.

6. The busbar connector for side-connected cabinets fixed on one side according to claim 1, characterized in that: The copper conductor (21) and the insulating layer (22) are integrally formed.

7. The busbar connector for parallel cabinets fixed on one side according to claim 1, characterized in that: The inner diameter of the first countersunk hole (202) is greater than the outer diameter (11) of the conductor and has a size range of 0.1 to 0.3 mm. The inner diameter of the second countersunk hole (203) is 0.5 to 2 mm larger than the outer diameter of the cup head (42), and the through hole (204) is 0.5 to 1 mm larger than the major diameter of the thread (41).

8. The busbar connector for parallel cabinets fixed on one side according to claim 1, characterized in that: The end of the first countersunk hole (202) of the copper conductor (21) is provided with a second guide (201) with a slope design and rounded edges, and the size of the slope is 1 to 5 mm.

9. The busbar connector for parallel cabinets fixed on one side according to claim 1, characterized in that: The end of the second countersunk hole (203) of the copper conductor (21) is provided with a rounded corner, and the size of the rounded corner is R0.5-R2mm.

10. The busbar connector for parallel cabinets fixed on one side according to claim 1, characterized in that: The inner wall surface of the insulating layer (22) is provided with a semiconductive layer.

Images