Intensive fire-resistant bus duct
By adopting the inner and outer plate structures in the intensive refractory bus trough, filling the aluminum silicate fibers therein, spraying fire-resistant materials, the problems of poor heat dissipation and insufficient versatility are solved, and the effect of efficient heat dissipation and simple structure is achieved.
Patent Information
- Application Number
- CN202422502297.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-16
- Publication Date
- 2025-08-22
- Estimated Expiration
- 2034-10-16
AI Technical Summary
The existing intensive refractory bus ducts are poor in overall heat dissipation, the current level is limited, and they cannot be assembled or disassembled according to actual conditions, which is not good in general style.
A dense fire-resistant bus trough is designed, adopting the inner plate and the outer plate structure, and filling the inner plate with aluminum silicate fibers between the inner plate and the outer plate, spraying fire-resistant plastic on the outer plate and C-type cover plate, and spraying the expansive fire-resistant coating on the outside of the bus trough conductor, combining a polyester sleeve and mica belt to improve heat dissipation and fire-resistant performance.
It improves the heat dissipation performance of the busbar duct, reduces the material usage, simplifies the structure, enhances versatility, saves R&D costs and time, and improves system reliability.
Smart Images
Figure CN223261230U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of bus ducts, in particular to a dense fire-resistant bus duct. Background Art
[0002] The fire-resistant bus ducts on the market are basically divided into two categories. 1: Dense type with double-layer cover and side panel structure; 2: Air type with double-layer cover and side panel structure. The main applications are basically divided into two categories: 1: Fire emergency bus duct, which is usually not powered and is switched in an emergency during fire fighting; 2: Some basements or subways are used as main lines according to special requirements. Since the fire-resistant bus duct is inferior to the ordinary bus duct in terms of overall heat dissipation, especially the dense fire-resistant bus duct with double-layer structure, the current level needs to be used at 70% to 80% of the original current level, and it cannot be operated at full load for a long time (such as Figure 3 Furthermore, the current dense fire-resistant bus duct cannot be assembled or disassembled according to actual conditions and is not universally applicable. Utility Model Content
[0003] In view of the deficiencies in the prior art, the present invention provides a dense fire-resistant bus duct to solve the problems mentioned in the above background technology.
[0004] In order to solve the above technical problems, the present invention provides the following technical solutions:
[0005] A dense fire-resistant bus duct includes a bus duct conductor. Both sides of the bus duct conductor are connected to inner plates, and the outer sides of the two inner plates are connected to outer plates. The upper and lower ends of the bus duct conductor are both connected to two C-shaped cover plates. U-shaped heads are installed at both ends between the two C-shaped cover plates on the same side. Aluminum silicate fibers are filled between the inner and outer plates and between the two U-shaped heads. Cover plate sealing plates are also connected to the two C-shaped cover plates on the same side to fix and seal the C-shaped cover plates and the internal aluminum silicate fibers.
[0006] Preferably, the C-shaped cover plate, the cover plate sealing plate and the outer side plate are sprayed with fireproof plastic.
[0007] Preferably, the exterior of the bus duct conductor is sprayed with intumescent fire retardant paint.
[0008] Preferably, the U-shaped head is made by bending galvanized sheet metal.
[0009] Preferably, the outer periphery of the bus duct conductor is covered with a polyester sleeve, and the outer periphery of the polyester sleeve is covered with a mica tape.
[0010] Compared with the prior art, the beneficial effects of the present invention are:
[0011] This bus duct is a structural form of dense fire-resistant bus duct designed based on fire emergency and circuit trunk lines instead of fire-resistant cables. By setting inner and outer plates and filling aluminum silicate fibers between the inner and outer plates, the bus duct conductors are blocked and fire-proofed. At the same time, the amount of aluminum silicate fibers filled on both sides of the bus duct conductors is reduced, which not only saves materials but also reduces the width and is conducive to heat dissipation.
[0012] The cover, aluminum silicate fiber, and outer panels can be eliminated, making it a universal fire-resistant bus duct. This eliminates the need for separate development of fire-resistant bus ducts, significantly saving development time and costs. Furthermore, the simple structure facilitates maintenance and improves the reliability of the overall power system. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] Figure 1 It is a schematic diagram of the intensive fire-resistant bus duct of the utility model;
[0014] Figure 2 It is a schematic diagram of C-type cover and U-type head;
[0015] Figure 3 This is a schematic diagram of an existing intensive fire-resistant bus duct;
[0016] Figure 4 This is a schematic diagram of a universal fireproof bus duct;
[0017] In the figure: 1-busbar conductor, 2-inner plate, 3-outer plate, 4-C-type cover, 5-U-type head, 6-aluminum silicate fiber, 7-cover plate, 8-C-type cover, 9-universal fireproof busbar. DETAILED DESCRIPTION
[0018] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.
[0019] Example 1
[0020] See also Figure 1-2A compact fire-resistant bus duct includes a bus duct conductor 1, with inner plates 2 connected to both sides of the bus duct conductor 1. The outer sides of the two inner plates 2 are connected to outer plates 3. The upper and lower ends of the bus duct conductor 1 are both connected to two C-shaped cover plates 4. U-shaped headers 5 are installed at both ends between the two C-shaped cover plates 4 on the same side. The U-shaped headers 5 are made of bent galvanized sheet metal. Aluminum silicate fibers 6 are filled between the inner plates 2 and the outer plates 3 in a stacked structure to isolate them from the bus duct conductor 1 and prevent fire. This reduces the overall width of the compact fire-resistant bus duct, saves costs, and facilitates heat dissipation. The current level utilization rate of this compact fire-resistant bus duct can reach approximately 90%.
[0021] Aluminum silicate fiber 6 is also filled between the two U-shaped heads 5, and a cover plate sealing plate 7 is connected to the two C-shaped cover plates 4 on the same side to fix and seal the C-shaped cover plates 4 and the internal aluminum silicate fibers 6 to prevent the fire source from directly contacting the C-shaped cover plates and isolate the heat.
[0022] The C-shaped cover plate 8, the cover plate sealing plate 7 and the outer side plate 3 are sprayed with fireproof plastic to isolate the fire source from direct contact with the cover plate and the side plate.
[0023] The exterior of the bus duct conductor 1 is sprayed with an intumescent fire retardant paint with a fire resistance temperature of 1580°C to 1770°C and a fire resistance limit of 3H.
[0024] This bus duct is a structural form of dense fire-resistant bus duct designed based on fire emergency and circuit trunk lines instead of fire-resistant cables. By setting inner and outer plates and filling aluminum silicate fibers between the inner and outer plates, the bus duct conductors are blocked and fire-proofed. At the same time, the amount of aluminum silicate fibers filled on both sides of the bus duct conductors is reduced, which not only saves materials but also reduces the width and is conducive to heat dissipation.
[0025] The intensive fire-resistant bus duct structure has strong versatility and can be transformed into a universal fire-resistant bus duct (such as Figure 4 There is no need to develop fireproof bus duct separately, which greatly saves R&D time and cost.
[0026] Example 2
[0027] On the basis of Example 1, the outer periphery of the busbar duct conductor 1 is covered with a polyester sleeve, and the outer periphery of the polyester sleeve is covered with a mica tape to increase the flame retardant effect and insulation.
[0028] It should be noted that the terms "comprises," "includes," or any other variations thereof are intended to encompass non-exclusive inclusion, such that a process, method, article, or apparatus that includes a series of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus. In the absence of further limitations, an element defined by the phrase "comprises a ..." does not preclude the presence of other identical elements in the process, method, article, or apparatus that includes the element.
[0029] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. A dense fire-resistant bus duct, characterized by: The invention comprises a bus duct conductor (1), wherein both sides of the bus duct conductor (1) are connected to inner plates (2), and the outer sides of the two inner plates (2) are connected to outer plates (3), and the upper end and lower end of the bus duct conductor (1) are both connected to two C-shaped cover plates (4), and U-shaped sealing heads (5) are installed at both ends between the two C-shaped cover plates (4) on the same side, and aluminum silicate fibers (6) are filled between the inner plate (2) and the outer plate (3) and between the two U-shaped sealing heads (5), and the two C-shaped cover plates (4) on the same side are further connected to cover plate sealing plates (7) to fix and seal the C-shaped cover plates (4) and the internal aluminum silicate fibers (6).
2. The intensive fire-resistant bus duct according to claim 1, characterized in that: The C-shaped cover plate (48), the cover plate sealing plate (7), and the outer side plate (3) are sprayed with fireproof plastic.
3. The dense fire-resistant bus duct according to claim 2, characterized in that: The exterior of the bus duct conductor (1) is sprayed with an intumescent fire retardant coating.
4. The dense fire-resistant bus duct according to claim 3, characterized in that: The U-shaped end cap (5) is made by bending a galvanized sheet.
5. The intensive fire-resistant bus duct according to claim 4, characterized in that: The outer periphery of the busbar duct conductor (1) is covered with a polyester sleeve, and the outer periphery of the polyester sleeve is covered with a mica tape.