Rail type direct current bus duct

Abstract

The rail type direct current bus duct is characterized in that a busbar is arranged in a bus shell of the direct current bus duct, the bus shell is a split rail shell, a plugging groove is formed in the middle line of the bottom surface of the bus shell in a conducting manner, and busbar insulating layers are arranged on the two surfaces of the inner side of the plugging groove in a parallel plugging manner; a positive busbar and a negative busbar are arranged on the inner side surfaces of the busbar insulating layers on the two sides in a penetrating and inserting mode respectively, the two ends of the busbar insulating layers are arranged on the outer sides of the two ends of the busbar shell in a protruding mode, and fixing buckles are arranged on the outer sides of the two ends of the busbar insulating layers in a penetrating mode. The data center direct current special bus duct is specially developed for data center PDU cabinet (direct current) power supply, and the data center direct current special bus duct divides a copper bar into three levels of positive electrode, negative electrode and grounding according to the characteristics of direct current power supply. And hidden dangers of uneven current distribution and concentrated heating points are reduced.

Description

Technical Field

[0001] This article belongs to the technical field of DC bus ducts, and specifically relates to a track-type DC bus duct. Background Art

[0002] With the development of 5G technology, data center construction has entered a stage of rapid development. Data center dedicated bus ducts have also become popular.

[0003] DC power supply has advantages over AC power supply in data center applications:

[0004] 1. Efficiency improvement: DC power supply systems, especially 240V high-voltage DC systems, can achieve higher overall efficiency, reaching over 96%, due to the elimination of the inverter link. This is a significant improvement over traditional AC systems.

[0005] 2. Increased equipment density: Since DC power supply reduces heat emission, the voltage conversion module can be omitted in the server, thereby saving space and increasing equipment density.

[0006] 3. Reduced cooling requirements: DC power supply reduces heat generation due to improved efficiency, thereby reducing cooling requirements and helping to reduce data center energy consumption and operating costs.

[0007] 3. Improved reliability: In the DC power supply system, the battery can be directly connected in parallel to the output bus, and can directly supply power when the mains power is abnormal, thereby improving the reliability of the system.

[0008] 4. Easy maintenance: The modular design of the DC power supply system makes maintenance simpler and more convenient, reducing operation and maintenance costs.

[0009] 5. Economical: The DC power supply solution can more flexibly utilize the energy storage system during peak and off-peak periods of electricity consumption, and has better economical efficiency.

[0010] 6. Reduce conversion loss: DC power supply avoids the conversion loss from AC to DC. Especially in large-scale data centers, this efficiency improvement can bring significant energy efficiency improvements.

[0011] 7. Support for renewable energy: DC power supply systems are easier to combine with renewable energy systems such as solar energy, helping data centers achieve greater energy self-sufficiency and sustainability.

[0012] Currently, DC data center bus ducts on the market are directly replacing AC bus ducts, and the structure still uses the "AB CN PE" five-pole arrangement. This has the disadvantages of being overly complex and having large phase-to-phase capacitance. When transmitting DC power, the five-level structure easily causes uneven current distribution due to uneven load. Since the bus duct connectors in the five-level structure cannot reintegrate electrical energy, the result is large single-phase current and heat generation, and rapid aging of local single-phase insulation, posing a hidden danger. The dedicated DC bus duct for data centers has a three-level structure of "positive," "negative," and "ground," which concentrates the current distribution and evenly dissipates the generated heat, reducing the hidden danger of rapid local insulation aging. Utility Model Content

[0013] To address the aforementioned issues, this paper proposes a track-type DC busbar duct. Busbars are installed within the busbar housing of the DC busbar duct. The busbar housing is a center-split track housing. A plug-in slot is provided on the bottom surface of the busbar housing, which is connected to the centerline. Busbar insulation layers are provided on two parallel inner surfaces of the plug-in slot. The inner surfaces of the busbar insulation layers on both sides are provided with positive and negative busbars, respectively, which are plug-in and pass through. The ends of the busbar insulation layers protrude from the outer ends of the busbar housing. Fixing clips penetrate through the outer ends of the busbar insulation layers, connecting and securing the insulated sides of the busbars to the busbars. Grounding slots are symmetrically provided on both sides of the bottom of the plug-in slot. Grounding copper bars and grounding fixtures are provided within the grounding slots. Housing fixings are provided on the outer sides of the grounding fixtures at both ends of the bottom surface of the busbar housing. This dedicated DC busbar duct for data centers is specifically developed for powering data center PDU cabinets (DC). Based on the characteristics of DC power supply, the copper bars are divided into three levels: "positive," "negative," and "ground." The hidden danger of uneven current distribution and concentrated heating points is reduced.

[0014] The busbar housing is in the shape of a long rectangular housing. The upper, left and right sides of the busbar housing are provided with outer assembly grooves. The inner ends of the busbar housing are conductively provided with busbar cavities. The bottom of the busbar cavity is conductively provided with a plug-in slot. The inner walls of the busbar cavity are symmetrically provided with busbar slots on the left and right sides. The outer side of the bottom surface of the plug-in slot is protruding downwardly with a grounding slot. The inner side of the grounding slot is provided with a grounding cavity with conductive ends. The bottom of the grounding cavity is provided with a fixed guide groove. By directly arranging two busbar slots for installing the busbar on the inner side of the conventional track-type busbar housing, a DC positive and negative pole double busbar connection is achieved, which is simple and efficient.

[0015] The busbar insulation layer is in the shape of a rectangular long strip of card slot. The busbar insulation layer is fitted on the left and right sides of the inner wall of the busbar shell. The upper and lower sides of the busbar insulation layer are symmetrically provided with guide grooves. One side surface of the busbar insulation layer is concavely provided with a busbar card slot. Guide spikes are provided on both sides of the outside of the busbar card slot. Fixing holes are provided on the two end surfaces of the busbar insulation layer. The fixing holes are symmetrically passed through the inner side of the busbar card slot with the horizontal center line as the reference. The positive and negative busbars are directly installed to the inside of the busbar shell through the busbar insulation layer. Not only can absolute insulation performance be guaranteed, but the busbar is also fixed through the fixing buckles at both ends. Moreover, the guide spikes are provided to facilitate the guide installation of connection devices such as plug-in boxes and connection sockets.

[0016] The positive busbar and the negative busbar are both in the shape of long rectangular plates. Both end surfaces of the positive busbar and the negative busbar are provided with through holes. The positive busbar and the negative busbar are connected to the busbar insulation layer through the through holes and fixing clips. By directly arranging the positive and negative busbars of the DC busbar on both sides of the inner shell of the busbar, uniform heat conduction of the DC busbar is achieved to prevent heat accumulation.

[0017] The material of the fixing clip is insulating material, and the shape of the fixing clip is a round pressure nail. The top of the fixing clip is provided with a flat nail head, and the bottom of the fixing clip is vertically provided with a thorny one-way clamping column. The busbar insulation layer and the busbar are connected and fixed by a one-way plug-in fixing hook, and are arranged at both ends protruding from the outer end of the busbar shell to prevent interference and ensure smooth installation of the busbar insulation layer.

[0018] The inner top surface of the grounding slot is fitted with a grounding copper busbar, and the bottom surface of the grounding copper busbar is pressed with a grounding fixing piece. The grounding fixing piece is in the shape of a slide-type clip. The inner side of the grounding fixing piece is provided with a plurality of vertical push rods. The push rods are connected to the grounding copper busbar in a top-pressing manner. The grounding busbar of the busbar duct can be independently arranged on the outside of the busbar through the grounding slot, thereby preventing the busbar from affecting the performance of the grounding busbar.

[0019] Beneficial effects:

[0020] This data center DC bus duct is specifically developed for powering data center PDU cabinets (DC). Based on the characteristics of DC power supply, the copper busbars are divided into three levels: "positive," "negative," and "ground." This reduces the hidden dangers of uneven current distribution and concentrated hot spots.

[0021] By directly arranging two busbar slots for installing busbars on the inner side of a conventional track-type busbar housing, a DC type positive and negative pole double busbar connection is achieved, which is simple and efficient.

[0022] The positive and negative busbars are installed directly into the busbar casing through the busbar insulation layer, which not only ensures absolute insulation performance, but also fixes the busbar through the fixing clips at both ends, and also facilitates the connection and installation of connecting devices such as plug-in boxes and connection sockets through the provided guide tips.

[0023] By directly arranging the positive and negative busbars of the DC busbar on both sides of the inner portion of the busbar housing, the DC busbar is evenly conductive to prevent heat accumulation.

[0024] The busbar insulation layer and the busbar are connected and fixed by a one-way plug-in fixing hook, and are arranged at both ends protruding from the outer end of the busbar shell, thereby preventing interference and ensuring smooth installation of the busbar insulation layer.

[0025] The grounding slot can be used to independently set the grounding bar of the bus duct on the outside of the busbar, thereby preventing the busbar from affecting the performance of the grounding bar. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the end of a track-type DC bus duct;

[0027] Figure 2 It is a schematic diagram of a track-type DC bus duct;

[0028] In the figure; 1. Busbar casing, 2. Busbar insulation layer, 3. Positive busbar, 4. Negative busbar, 5. Grounding copper busbar, 6. Fixing clip, 7. Grounding fixture, 8. Casing fixture. DETAILED DESCRIPTION

[0029] In order to deepen the understanding of the present invention, the present invention will be further described in detail below with reference to embodiments and drawings. The embodiments are only used to explain the present invention and do not constitute a limitation on the scope of protection of the present invention.

[0030] Busbar housing 1, busbar insulation layer 2, positive busbar 3, negative busbar 4, grounding copper busbar 5, fixing clip 6, grounding fixing piece 7, housing fixing piece 8.

[0031] like Figure 1 、 2 As shown;

[0032] A track-type DC bus duct, a busbar is provided inside the busbar housing 1 of the DC busbar duct, the busbar housing 1 is a center-split track housing, the bottom surface of the busbar housing 1 is provided with a plug-in slot in a midline conductive manner, the inner two sides of the plug-in slot are parallel to each other and provided with a busbar insulation layer 2, the inner surface of the busbar insulation layer 2 on both sides is respectively provided with a positive busbar 3 and a negative busbar 4 in a plug-in manner, the two ends of the busbar insulation layer 2 are protruding and provided on the outer side of the two ends of the busbar housing 1, and the outer side of the two ends of the busbar insulation layer 2 is provided with a fixing buckle 6, the fixing buckle 6 is insulated and penetrates the busbar insulation side and the busbar to connect and fix, the plug The bottom of the connection slot is symmetrically provided with a grounding slot on both sides, and the inside of the grounding slot is provided with a grounding copper bar 5 and a grounding fixing piece 7. The outer side of the grounding fixing piece 7 at both ends of the bottom surface of the busbar housing 1 is covered with a housing fixing piece 8 in a card-type manner. The shape of the busbar housing 1 is a long rectangular housing. The upper, left and right sides of the busbar housing 1 are provided with an outer assembly slot. The inner ends of the busbar housing 1 are conductively provided with a busbar cavity. The bottom of the busbar cavity is conductively provided with a plug-in slot. The inner wall of the busbar cavity is symmetrically provided with busbar slots on the left and right sides. The outer side of the bottom surface of the plug-in slot is protruding downward with a grounding slot. The inner side of the grounding slot is provided with conductive The bottom of the grounding cavity is provided with a fixed guide groove, the busbar insulating layer 2 is in the shape of a rectangular long strip clamping groove, the busbar insulating layer 2 is arranged on the left and right sides of the inner wall of the busbar housing 1 in a fitted manner, and the upper and lower sides of the busbar insulating layer 2 are symmetrically provided with guide grooves, and one side surface of the busbar insulating layer 2 is concave with a busbar clamping groove, and the outer sides of the busbar clamping groove are provided with guide tips, and the two end surfaces of the busbar insulating layer 2 are penetrated with fixing holes, and the fixing holes are symmetrically passed through the inner side of the busbar clamping groove with the horizontal midline as the reference. The positive busbar 3 and the negative busbar 4 are both in the shape of long rectangular plates, and the positive busbar 3 and The surfaces of both ends of the negative busbar 4 are provided with through holes. The positive busbar 3 and the negative busbar 4 are connected to the busbar insulation layer 2 through the through holes and the fixing clips 6. The material of the fixing clips 6 is insulating material. The shape of the fixing clips 6 is a round pressure nail. The top of the fixing clips 6 is provided with a flat nail head. The bottom end of the fixing clips 6 is vertically provided with a thorny one-way clamping column. The inner top surface of the grounding groove is fitted with a grounding copper bus 5. The bottom surface of the grounding copper bus 5 is top-pressed with a grounding fixing part 7. The shape of the grounding fixing part 7 is a slide-type clamping part. The inner side of the grounding fixing part 7 is provided with a plurality of vertical push rods, and the push rods are top-pressed and connected to the grounding copper bus 5.

[0033] Implementation examples;

[0034] The busbars are directly arranged on the left and right sides of the busbar housing 1 and separated from the busbar housing 1 by the busbar insulation layer 2, so that the positive and negative poles of the DC busbar are directly built-in, reducing the hidden dangers of uneven current distribution and concentrated hot spots. The PE bus is fixed on the lower side of the housing by PE fixings.

[0035] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A track-type DC bus duct, wherein a busbar is provided inside the busbar housing of the DC bus duct, characterized in that: The busbar housing is a center-split rail housing, and a plug-in slot is provided on the centerline conductive bottom surface of the busbar housing. The inner two surfaces of the plug-in slot are parallel and plug-in provided with busbar insulation layers. The inner surfaces of the busbar insulation layers on both sides are respectively provided with positive busbar and negative busbar in a plug-in manner. The two ends of the busbar insulation layer are protruding and arranged on the outer sides of the two ends of the busbar housing. The outer sides of the two ends of the busbar insulation layer are penetrated by fixing clips. The fixing clips are insulated and penetrated to connect and fix the busbar insulation side and the busbar. Grounding slots are symmetrically provided on both sides of the bottom of the plug-in slot. A grounding copper bus and a grounding fixing piece are provided inside the grounding slot. The outer sides of the grounding fixing pieces at both ends of the bottom surface of the busbar housing are covered with shell fixing pieces in a plug-in manner.

2. The track-type DC bus duct according to claim 1, characterized in that: The busbar housing is in the shape of a long rectangular housing. The upper, left and right sides of the busbar housing are provided with outer assembly grooves. The inner ends of the busbar housing are conductively provided with busbar cavities. The bottom of the busbar cavity is conductively provided with plug-in slots. The inner walls of the busbar cavity are symmetrically provided with busbar slots on the left and right sides. The outer side of the bottom surface of the plug-in slot is protruding downwardly with a grounding groove. The inner side of the grounding groove is provided with a grounding cavity with conductive ends. The bottom of the grounding cavity is provided with a fixed guide groove.

3. The track-type DC bus duct according to claim 1, characterized in that: The busbar insulation layer is in the shape of a rectangular long strip of clip-on groove. The entire surface of the busbar insulation layer is fitted on the left and right sides of the inner wall of the busbar housing. The upper and lower sides of the busbar insulation layer are symmetrically provided with guide grooves. One side surface of the busbar insulation layer is concavely provided with a busbar clip-on groove. Guide tips are provided on both sides of the outside of the busbar clip-on groove. Fixing holes are provided on the two end surfaces of the busbar insulation layer. The fixing holes are symmetrically passed through the inner side of the busbar clip-on groove with the horizontal center line as the reference.

4. The track-type DC bus duct according to claim 1, characterized in that: The positive busbar and the negative busbar are both in the shape of long rectangular plates. Both end surfaces of the positive busbar and the negative busbar are provided with through holes. The positive busbar and the negative busbar are connected to the busbar insulation layer through the through holes and fixing buckles.

5. The track-type DC bus duct according to claim 1, characterized in that: The material of the fixing buckle is insulating material, the shape of the fixing buckle is a round pressure nail, the top of the fixing buckle is provided with a flat nail head, and the bottom of the fixing buckle is vertically provided with a spiny ridge one-way clamping column.

6. The track-type DC bus duct according to claim 1, characterized in that: The inner top surface of the grounding groove is fitted with a grounding copper busbar, and the bottom surface of the grounding copper busbar is pressed with a grounding fixing piece. The grounding fixing piece is in the shape of a slide-type clip. The inner side of the grounding fixing piece is provided with a plurality of vertical push rods, and the push rods are connected to the grounding copper busbar in a top-pressing manner.

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