An outdoor combined electrical appliance and busbar docking device

Abstract

This utility model relates to the field of high-voltage switches, specifically an outdoor combined electrical appliance and busbar docking device. It includes three docking assemblies, and sequentially coaxially connected components: a pre-existing combined electrical appliance, a coaxial housing, an insulator, and a current combined electrical appliance. Each docking assembly includes a pre-existing equipment contact seat mounted on the pre-existing combined electrical appliance, a docking conductor detachably connected to the insulator, and a conductive rod electrically connected between the pre-existing equipment contact seat and the docking conductor. The pre-existing equipment contact seat and the docking conductor are staggered. This utility model enables docking and expansion of combined electrical appliances of different models and busbar heights, with a uniform internal electric field and high safety.

Description

Technical Field

[0001] This utility model relates to the field of high-voltage switches, and in particular to an outdoor combined electrical appliance and busbar connection device. Background Technology

[0002] The full name of a combined electrical appliance is gas-insulated metal-enclosed switchgear. It generally combines major component units such as circuit breakers, disconnecting switches, grounding switches, busbars, current transformers, voltage transformers, surge arresters, bushings (or cable ducts, oil / gas bushings), and supports the internal connecting conductors through an insulating basin.

[0003] Currently, the busbar housing dimensions and three-phase conductor positions of most manufacturers' equipment are inconsistent. When expanding with combined electrical equipment from other manufacturers, deviations exist in busbar height and horizontal direction. Generally, the ground is used as the reference plane for height. If the same foundation plane is used as the reference, the busbars of the existing equipment and the new equipment will be out of axis, resulting in centerline deviations, making direct connection via conductive rods impossible. Generally, if... Figure 1 As shown, a zigzag-shaped busbar shell and conductor need to be designed. The electric field inside this equipment is not uniformly distributed, which poses a safety hazard. Utility Model Content

[0004] The purpose of this utility model is to address the problems existing in the background technology by proposing an outdoor combined electrical appliance and busbar docking device, which can dock and expand combined electrical appliances of different models and busbar heights, with uniform internal electric field and high safety.

[0005] The technical solution of this utility model is an outdoor combined electrical appliance and busbar docking device, which includes three sets of docking components, and a previous combined electrical appliance, a coaxial housing, an insulator and the current combined electrical appliance connected in sequence. The docking components include a previous equipment contact seat set on the previous combined electrical appliance, a docking conductor detachably connected to the insulator, and a conductive rod electrically connected between the previous equipment contact seat and the docking conductor. The previous equipment contact seat and the docking conductor are staggered.

[0006] Preferably, the conductive rod includes a straight conductive rod and an adapter conductor. One end of the straight conductive rod is plugged into the contact seat of the previous equipment, and the other end of the straight conductive rod has an internal thread. One end of the adapter conductor has an external thread that matches the internal thread of the straight conductive rod, and the other end of the adapter conductor is connected to the mating conductor by bolts.

[0007] Preferably, the adapter conductor has a "Z" shaped structure.

[0008] Preferably, the three sets of docking components are evenly distributed around the central axis of the coaxial housing, and the distance from the docking conductor to the central axis of the coaxial housing is greater than the distance from the contact seat of the previous equipment to the central axis of the coaxial housing.

[0009] Preferably, the front-end combined electrical appliance has a flange one on the right end, the insulator has a flange two, and the coaxial housing has a flange three and a flange four on the left and right ends respectively. The flange three and flange one, as well as the flange four and flange two, are all connected by bolts.

[0010] Preferably, an expansion joint is connected between the insulator and the combined electrical appliance.

[0011] Compared with the prior art, the present invention has the following beneficial technical effects: The docking device provided by the present invention enables different manufacturers to achieve smooth connection of internal conductors and smooth connection of busbar shells by adjusting the foundation benchmark, and can dock and expand combined electrical appliances of different models and busbar heights. The internal electric field is uniform and the safety is high. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the connection structure of the combined electrical appliances under the existing technology;

[0013] Figure 2 This is a schematic diagram of the structure of an embodiment of the present utility model;

[0014] Figure 3 A schematic diagram showing the connection between the conductive rod and the mating conductor;

[0015] Figure 4 A schematic diagram showing the deflection distribution of the conductors connecting the new and original equipment.

[0016] Figure 5 This is a front sectional view of the coaxial housing;

[0017] Figure 6 This is a side view of the coaxial housing.

[0018] Reference numerals in the attached diagram: 1. Pre-existing combined electrical appliance; 2. Pre-existing equipment contact base; 3. Current combined electrical appliance; 4. Coaxial housing; 5. Insulator; 6. Expansion joint; 7. Conductive rod; 71. Straight conductive rod; 72. Transfer conductor; 8. Butt conductor. Detailed Implementation

[0019] like Figure 2As shown, the technical solution logic of this embodiment to solve the existing technical problems is as follows: For the connection and expansion of combined electrical appliances with different busbar heights outdoors, based on the height difference of the manufacturer's busbars to the ground, when designing the foundation surface of the current equipment, the reference surface is raised or lowered to keep the busbar heights of different manufacturers on the same horizontal line. This compensates for the positional deviation of the connection between the busbar shells of the two combined electrical appliances, realizing the direct connection of different models of combined electrical appliances. For example, the foundation reference surface of the previous combined electrical appliance 1 is 0.00 height, and the center line height of the busbar of the previous combined electrical appliance 1 to the ground is 590mm. The foundation reference surface of the current combined electrical appliance 3 is -0.20 height, and the center line height of the busbar of the current combined electrical appliance 3 to the ground is 790mm. This keeps the busbar heights of the previous combined electrical appliance 1 and the current combined electrical appliance 3 on the same horizontal line, realizing the direct connection of different combined electrical appliances.

[0020] like Figures 2-6 As shown, this embodiment proposes an outdoor combined electrical appliance and busbar docking device. The device includes three docking assemblies, and sequentially coaxially connected components: a pre-existing combined electrical appliance 1, a coaxial housing 4, an insulator 5, and a current combined electrical appliance 3. The busbars of the pre-existing combined electrical appliance 1 and the current combined electrical appliance 3 are coaxial. Each docking assembly includes a pre-existing equipment contact 2 mounted on the pre-existing combined electrical appliance 1, a docking conductor 8 detachably connected to the insulator 5, and a conductive rod 7 electrically connected between the pre-existing equipment contact 2 and the docking conductor 8. The pre-existing equipment contact 2 and the docking conductor 8 are staggered. The three docking conductors 8 are respectively connected to the three-phase base of the insulator 5 using hexagonal socket head cap screws.

[0021] For the connection between the pre-existing combined electrical appliance 1, the coaxial housing 4, and the insulator 5, the pre-existing combined electrical appliance 1 has a flange one on its right end, the insulator 5 has a flange two, and the coaxial housing 4 has flange three and flange four on its left and right ends respectively. Flange three is connected to flange one, and flange four is connected to flange two, all by bolts. During connection, the corresponding flanges are aligned first, and then bolted together. The coaxial housing 4 needs to be designed with an expanded transition form according to the dimensions of the connection points of the two devices on both sides. Flange one and flange three have the same outer diameter, and flange two and flange four have the same outer diameter. An aluminum tube expansion process is used to smoothly expand the diameter of the small-diameter aluminum tube. The integrated structure increases the smooth transition of the inner wall of the housing, avoiding the aesthetic problems caused by welding processes. The coaxial housing 4 has an opening with a sealing plate. The opening faces the connection point of the conductor 8 and the conductive rod 7, facilitating the disassembly of the conductive rod 7.

[0022] The three sets of docking components are evenly distributed around the central axis of the coaxial housing 4, and the distance from the docking conductor 8 to the central axis of the coaxial housing 4 is greater than the distance from the contact seat 2 of the previous equipment to the central axis of the coaxial housing 4.

[0023] like Figure 3As shown, the conductive rod 7 includes a straight conductive rod 71 and an adapter conductor 72, which are pre-assembled in the factory and can be used directly at the equipment installation site without secondary installation. One end of the straight conductive rod 71 is plugged into the contact seat 2 of the previous equipment. The structure of the contact seat 2 of the previous equipment is generally a sprite contact, a conductive spring, or a contact finger strap. The manufacturer of the current combined electrical appliance 3 needs to design the end form of the straight conductive rod 71 according to the structure of the contact seat 2 of the previous equipment to achieve the plug-in connection between the straight conductive rod 71 and the contact seat 2 of the previous equipment. The other end of the straight conductive rod 71 has an internal thread, and one end of the adapter conductor 72 has an external thread that matches the internal thread of the straight conductive rod 71. The other end of the adapter conductor 72 is connected to the mating conductor 8 by bolts. When conducting segmented testing, the bolts are removed, and the bolts fixing the base are also removed, so that the base can be removed to form a break, which is used to separate the previous combined electrical appliance 1 from the current combined electrical appliance 3. Generally speaking, the transition conductor 72 has a "Z" shaped structure with its two ends staggered, thus connecting with the staggered straight conductive rod 71 and the docking conductor 8. The three transition conductors 72 are designed with the same length and the same deflection angle to compensate for the positional deviation of the conductor docking inside the two combined electrical appliances, thereby realizing the connection of different models of combined electrical appliances.

[0024] Furthermore, an expansion joint 6 can be connected between the insulator 5 and the current combined electrical appliance 3, specifically using bolts at the end flange. Since the docking device is generally designed based on manual on-site measurements, measurement errors are unavoidable. To eliminate these errors and installation errors, and given the adjustable installation space, the addition of the expansion joint 6 allows for a certain amount of expansion and contraction in both the longitudinal and axial directions, thus offsetting the final installation errors and achieving a flexible connection between the current combined electrical appliance 3 and the previous combined electrical appliance 1.

[0025] The docking device provided in this embodiment enables smooth connection of internal conductors between different manufacturers by adjusting the foundation reference. It also facilitates the smooth connection of busbar housings via the coaxial housing 4. This allows for the docking and expansion of combined electrical appliances of different models and busbar heights. The device features a uniform internal electric field, high safety, and reduces cumbersome electric field calculations and complex structural designs. The detachable conductor structure allows for the disconnection of combined electrical appliances.

[0026] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited thereto. Various changes can be made within the scope of knowledge possessed by those skilled in the art without departing from the spirit of the present invention.

Claims

1. An outdoor combined electrical appliance and busbar docking device, characterized in that, It includes three sets of docking components, and a pre-phase combined electrical appliance (1), a coaxial housing (4), an insulator (5) and a current phase combined electrical appliance (3) connected coaxially in sequence. The docking components include a pre-phase equipment contact (2) set on the pre-phase combined electrical appliance (1), a docking conductor (8) detachably connected to the insulator (5), and a conductive rod (7) electrically connected between the pre-phase equipment contact (2) and the docking conductor (8). The pre-phase equipment contact (2) and the docking conductor (8) are staggered.

2. The outdoor combined electrical appliance and busbar docking device according to claim 1, characterized in that, The conductive rod (7) includes a straight conductive rod (71) and an adapter conductor (72). One end of the straight conductive rod (71) is plugged into the contact seat (2) of the previous equipment. The other end of the straight conductive rod (71) has an internal thread. One end of the adapter conductor (72) has an external thread that matches the internal thread of the straight conductive rod (71). The other end of the adapter conductor (72) is bolted to the docking conductor (8).

3. The outdoor combined electrical appliance and busbar docking device according to claim 2, characterized in that, The adapter conductor (72) has a "Z" shaped structure.

4. The outdoor combined electrical appliance and busbar docking device according to claim 1, characterized in that, The three sets of docking components are evenly distributed around the central axis of the coaxial housing (4). The distance from the docking conductor (8) to the central axis of the coaxial housing (4) is greater than the distance from the contact seat (2) of the previous equipment to the central axis of the coaxial housing (4).

5. The outdoor combined electrical appliance and busbar docking device according to claim 1, characterized in that, The first-stage combined electrical appliance (1) has a flange one on the right end, the insulator (5) has a flange two, and the coaxial housing (4) has a flange three and a flange four on the left and right ends respectively. The flange three and flange one, as well as the flange four and flange two, are all connected by bolts.

6. The outdoor combined electrical appliance and busbar docking device according to claim 1, characterized in that, An expansion joint (6) connects the insulator (5) and the combined electrical appliance (3) of this phase.

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