Intensive bus duct fixed angle steering elbow

Abstract

The utility model discloses an intensive bus duct fixed angle steering elbow which is composed of a bus conductor, an insulating material, a supporting structure and a protective shell, the bus conductor is made of a 3P + N or 3P type copper bar and aluminum bar, the interior of the bus conductor is protected by the insulating material in an insulating mode, and a part of the insulating material is exposed to prevent interphase short circuit. The supporting structures are used for resisting shock, fixing and protecting the dense busbar and are located on the upper portion and the lower portion of the busbar, and the protective shell protects the dense busbar body and the exposed terminals respectively. According to the invention, the existing dense bus duct product is perfected and improved, the dense bus duct trend problem in a vertical complex environment is solved, the use length of the dense bus is saved, the cost is saved, the fault rate is reduced and the performance of the dense bus is improved under the condition that the voltage drop is effectively reduced and the number of elbows is small.

Description

Technical Field

[0001] The invention relates to a fixed-angle turning elbow for a dense bus duct, belonging to the technical fields of chemical industry, marine engineering, shipbuilding, electric power, construction and the like. Background Art

[0002] Compact busbars are the mainstream development direction. Existing manufacturers of compact busbars, such as Schneider, ABB, and Eaton, offer vertical elbows in 90° configurations, as well as other zigzag, bidirectional, and flanged elbow styles. These are suitable only for simple layouts in civil engineering and chemical industries, and are not suitable for complex offshore and shipbuilding environments. 90° compact busbar vertical elbows are suitable for larger spaces and simple environments, but complex environments increase elbow costs. Straight and 90° compact busbars are available on the market, but there are few compact busbar ducts with commonly used, specialized angles. Summary of the Invention

[0003] The purpose of the present invention is to provide a dense bus duct fixed angle turning elbow, which can solve the problems in the prior art that dense bus duct elbows cannot adapt to small and complex spaces, lack special angles, and have high busbar use costs.

[0004] In order to solve the above problems, the present invention provides a dense bus duct fixed-angle turning elbow, comprising: two protective shells arranged in parallel at an obtuse angle, support structures are respectively installed on the upper and lower parts of the protective shells, the support structures are located at the upper and lower parts of the dense busbar, the support structures are fit and nested with the edges of the protective shells, the support structures and the protective shells form a square tubular shell with open ends and closed four sides, a dense bus duct is provided inside the shell, the dense bus duct is provided with a dense bus duct elbow with the same obtuse angle as the protective shell, the dense busbar is nested in the dense bus duct elbow, the dense busbar is composed of a plurality of sheet-like busbar conductors tightly arranged, the busbar conductor is made of copper and aluminum bars in the form of 3L+N+PE or 3P+PE, the dense busbar is slidingly connected to the dense bus duct elbow track, the outer surface of the busbar conductor is fit and connected with the insulating material, and a part of the insulating material is exposed to prevent phase-to-phase short circuit.

[0005] In a preferred embodiment, the protective shell protects the dense busbar and the bare terminal respectively.

[0006] In a preferred embodiment, the angle of the dense bus duct elbow is not adjustable, and dense bus duct elbows with different angles are selected according to different environments.

[0007] In a preferred embodiment, the elbow angle of the dense bus duct can be set to 30° or 45°.

[0008] In a preferred embodiment, the elbow angle of the dense bus duct can be set to 60° or 120°.

[0009] In a preferred embodiment, the elbow angle of the dense bus duct can be set to 135° or 160°.

[0010] Preferably, the protective shell meets the requirements of being waterproof and dustproof.

[0011] In a preferred embodiment, the support structure serves to resist earthquakes, fix and protect the dense busbar.

[0012] The present invention provides the following beneficial effects: It provides multiple steering elbow angles (30°, 45°, 60°, 120°, 135°, and 160°) in height. The most appropriate elbow angle can be selected based on site requirements, reducing the length of dense busbars and saving costs. The present invention can achieve steering in any vertical or horizontal direction, meeting the needs of complex and space-constrained sites. Pre-existing holes in the support structure are used for bolting to the legs. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic diagram of the three-dimensional structure of the vertical steering elbow of the present invention;

[0014] Figure 2 It is a schematic top view of the three-dimensional structure of the vertical steering elbow of the present invention;

[0015] Figure 3 Schematic diagram of angle change of the present invention;

[0016] Figure 4 This is a schematic diagram of the three-dimensional structure of the horizontal steering elbow of the present invention;

[0017] Figure 5 This is a schematic diagram of the three-dimensional structure of the elbow of the present invention;

[0018] Legend: 1. Protective casing; 2. Busbar conductor; 3. Insulation material; 4. Support structure; 6. Elbow angle range. DETAILED DESCRIPTION

[0019] In practice, the present invention provides two different structures of fixed-angle deflection elbows for dense bus ducts: one for vertical deflection of the dense busbars, and the other for horizontal deflection of the dense busbars. The present invention is used in conjunction with a single straight dense busbar and is connected using connectors, fasteners, seals, and insulators.

[0020] Example 1: When a dense busbar turns vertically, if there is sufficient space, a single vertical elbow or zigzag can achieve this. However, when there is an obstacle at the turning point, the fixed length of the zigzag elbow may not be able to effectively pass through the obstacle, and two additional 90° or zigzag turning elbows are required to meet production requirements. The present invention provides multiple types of dense busbar vertical elbows with angles of 30°, 60°, and 45°. In this case, only two are required to solve the obstacle problem, resulting in an aesthetically pleasing overall layout, lower cost, and superior performance.

[0021] The specific operation method is as follows: When a single straight busbar is laid horizontally, if it encounters an obstacle such as a pipeline at the same height, it needs to be lowered or raised. Traditionally, a 90-degree vertical elbow is used. 90-degree vertical elbows are only used in relatively spacious environments and may not be suitable for complex environments such as offshore vessels. In this case, a compact busbar with a vertical angle of 30 degrees is used. Connectors are used to connect two compact busbar sections to the original straight compact busbar and fasten them with fasteners. The original path can now be bent 30 degrees upward or downward. Add a straight compact busbar to this structure and connect the two compact busbar sections with connectors, extending it upward at a certain angle to the desired location. Then, connect it to a compact busbar with a vertical angle of 30 degrees and connect the two compact busbar sections with connectors, adjusting the 30-degree orientation to a horizontal position. Add a straight busbar section and connect it as above, allowing the compact busbar to be laid to any equipment location. This Z-shaped structure can span obstacles, but it can also form a common "F" shape or any other shape. It is then connected to the equipment flange-type compact busbar to complete the installation. The overall busbar length is shorter, the overall appearance is more beautiful, and the performance is superior. A variety of steering elbows with different angles need to be selected according to the actual on-site environment. If the obstacle is close, a 60-degree steering elbow is used. If the obstacle is far away, a 30-degree steering elbow is used. Generally, a 45-degree steering elbow is used as a principle.

[0022] Example 2: When a dense busbar is turning horizontally, a single horizontal elbow is sufficient if space is sufficient. However, if there is an obstruction at the turning point, three additional 90° elbows are required to meet production requirements. This product offers multiple types of dense busbar horizontal turning elbows, including 30°, 60°, and 45°. In this case, only two elbows are required to resolve the obstruction problem, resulting in an aesthetically pleasing overall layout, lower costs, and superior performance.

[0023] The specific working method is: horizontal elbows are connected to straight and dense busbars with connectors. The horizontal elbows can be used to change the direction of the horizontal laying path, with 30°, 45°, and 60° angles available for correction. The two horizontal elbow components are connected by a straight and dense busbar in the middle. The joints are connected with connectors and fasteners. Without changing the horizontal laying direction, the path can be shifted left or right by the required distance.

[0024] Figure 1 、 Figure 4 The following diagrams illustrate the three-dimensional structures of a vertical and horizontal busbar elbow for a compact busbar system. The difference is that the busbars within both the vertical and horizontal busbar systems are installed vertically, with all busbar types within the compact busbar system positioned vertically during installation. Fasteners are used to create a smooth transition between busbar surfaces, similar to the palm-to-back relationship. When a vertical busbar is flattened, the internal busbars become horizontal, forming a 90-degree angle with the original straight busbars, preventing fasteners from tightening securely.

[0025] This invention solves the problem of bypassing obstacles by folding straight, dense busbars into six different angles. These six fixed angles are not adjustable, allowing for the selection of dense busbar ducts with different angles depending on the environment. If a 30° busbar duct cannot bypass an obstacle, 45°, 60°, 120°, 135°, or 160° angles can be used. These angles can meet the needs of all specialized environments and are suitable for mass production.

[0026] The basic principles, main features, and advantages of the present invention are shown and described above. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and modifications are intended to fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. A fixed angle turning elbow for a dense bus duct, characterized in that: include: Two protective shells (1) are arranged in parallel at an obtuse angle, and support structures (4) are respectively installed on the upper and lower parts of the protective shells (1). The support structures (4) are located at the upper and lower parts of the dense busbar, and the support structures (4) are nested and connected with the edges of the protective shells (1). The support structures (4) and the protective shells (1) form a square tubular shell with two ends open and four sides closed. A dense busbar is provided inside the shell, and the dense busbar is provided with a dense busbar elbow with the same obtuse angle as the protective shells (1). The dense busbar is nested in the dense busbar elbow. The dense busbar is composed of a plurality of sheet-like busbar conductors (2) tightly arranged. The busbar conductors (2) are made of copper and aluminum bars in the form of 3L+N+PE or 3P+PE. The dense busbar is slip-connected with the dense busbar elbow track. The outer surface of the busbar conductor (2) is nested with an insulating material (3), and a portion of the insulating material (3) is exposed to prevent inter-phase short circuit.

2. The fixed-angle turning elbow for dense bus duct according to claim 1 is characterized in that: The protective housing (1) protects the dense busbar and the bare terminal respectively.

3. The fixed-angle turning elbow for dense bus duct according to claim 1 is characterized in that: The angle of the dense bus duct elbow is not adjustable, and the dense bus duct elbow with different angles is selected according to different environments.

4. The fixed-angle turning elbow for dense bus duct according to claim 1 or 3, characterized in that: The elbow angle of the dense bus duct can be set to 30° or 45°.

5. The fixed-angle turning elbow for dense bus duct according to claim 1 or 3, characterized in that: The elbow angle of the dense bus duct can be set to 60° or 120°.

6. The fixed-angle turning elbow for dense bus duct according to claim 1 or 3, characterized in that: The elbow angle of the dense bus duct can be set to 135° or 160°.

7. The fixed-angle turning elbow for dense bus duct according to claim 1, characterized in that: The protective shell (1) meets the requirements of being waterproof and dustproof.

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