Sealing device for wall penetration and board bridge in ultra-low energy consumption building
By using a design in the cable tray device with a cylinder, cover plate and flexible sealing gasket, combined with a waterproof membrane, the airtightness and thermal bridging problems at the cable tray device are solved, achieving the sealing effect of ultra-low energy consumption buildings.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CHINA CONSTR EIGHT ENG DIV CORP LTD
- Filing Date
- 2025-05-21
- Publication Date
- 2026-06-12
AI Technical Summary
Existing cable tray systems have poor airtightness and thermal bridging performance at cable locations inside wall-penetrating conduits, failing to meet the requirements of ultra-low energy consumption buildings.
A cable tray sealing device comprising a cylinder, a cover plate, and a flexible sealing gasket is designed. By setting cable holes on the cover plate and using flexible sealing gaskets and sealing adhesive gaskets, combined with a waterproof vapor barrier membrane and a waterproof breathable membrane, the cable sealing and thermal bridging effects are achieved.
It achieves high airtightness and good thermal bridging effect at the connection between the cable and the cylinder, meeting the sealing requirements of ultra-low energy consumption buildings.
Smart Images
Figure CN224355790U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of passive building airtight insulation thermal bridge technology, specifically a sealing device for through-wall and panel bridges in ultra-low energy consumption buildings. Background Technology
[0002] In recent years, green building has become the mainstream direction of architectural design and construction in China. Among them, passive ultra-low energy buildings are widely used in the field of civil buildings. Good airtightness and thermal bridging technology are among the key technologies in ultra-low energy buildings. However, the details of cable trays and pipelines passing through passive walls and slabs involve professional cross-disciplinary issues and require technical solutions suitable for the characteristics of each discipline to solve the problems of airtightness and thermal bridging. At present, most cable tray devices use a sealing structure at the connection between the through-wall pipe and the wall for sealing. However, the airtightness and thermal bridging effect at the cable locations inside the through-wall pipe are still relatively poor. Therefore, a new solution is urgently needed. Utility Model Content
[0003] The purpose of this utility model is to overcome the defects of the prior art and provide a sealing device for through-wall and plate cable trays in ultra-low energy consumption buildings, which solves the problem that the airtightness and thermal bridging effect of the cables installed inside the through-wall pipes in the existing cable tray devices are still poor.
[0004] The technical solution to achieve the above objectives is:
[0005] This utility model provides a sealing device for through-wall and plate bridge structures in ultra-low energy consumption buildings, including:
[0006] A cylindrical body is inserted through a wall or panel, with openings at both ends and the two ends of the cylinder extending out of the corresponding wall or panel surface, respectively.
[0007] A first cover plate and a second cover plate are provided at the opening of the cylinder. The first cover plate and the second cover plate have cable holes that communicate with the interior of the cylinder. The first cover plate and the second cover plate are fastened to the cylinder.
[0008] A flexible sealing gasket is sandwiched between the first cover plate and the second cover plate. The flexible sealing gasket has a through hole corresponding to the cable hole. The diameter of the through hole is smaller than the diameter of the cable to be inserted into the cylinder. The flexible sealing gasket is elastic.
[0009] A further improvement of this utility model in the sealing device for through-wall and plate bridges in ultra-low energy buildings is that the diameter of the cable hole is larger than the diameter of the cable to be inserted into the cylinder.
[0010] A further improvement of the sealing device for through-wall and plate bridge in ultra-low energy consumption buildings is that a portion of the end of the cylinder is folded outward to form a connecting plate, and the connecting plate is fastened to the first cover plate and the second cover plate by fasteners.
[0011] A further improvement of the sealing device for through-wall and panel bridges in ultra-low energy consumption buildings of this utility model is that a sealing gasket is sandwiched between the connecting plate and the first cover plate.
[0012] A further improvement of this utility model in the sealing device for through-wall and plate bridges in ultra-low energy consumption buildings is that the flexible sealing gasket is a flame-retardant rubber gasket.
[0013] A further improvement of this utility model in the sealing device for through-wall and plate cable trays in ultra-low energy buildings is that a sealing cavity for accommodating cables is formed inside the cylinder.
[0014] A further improvement of this utility model in the sealing device for through-wall and plate bridges in ultra-low energy consumption buildings is that the outer contour of the cylinder is square.
[0015] A further improvement of the sealing device for through-wall and plate bridges in ultra-low energy consumption buildings of this utility model is that the first cover plate and the second cover plate are steel plates.
[0016] A further improvement of the sealing device for through-wall and panel bridges in ultra-low energy consumption buildings is that a waterproof and vapor-proof membrane is provided between the end of the cylinder and the corresponding wall or panel located on the inner side.
[0017] A further improvement of the sealing device for through-wall and panel bridges in ultra-low energy consumption buildings is that a waterproof and breathable membrane is provided between the end of the cylinder and the corresponding wall or panel surface located on the outside.
[0018] The beneficial effects of this utility model's sealing device for through-wall and plate bridge structures in ultra-low energy consumption buildings are as follows:
[0019] The cable tray sealing device of this utility model has a through hole designed to be smaller than the diameter of the cable when the cable passes through the cylinder. This allows the flexible sealing gasket to fit tightly onto the cable, achieving a seal at the connection point of the cable at the end face of the cylinder. In addition, the flexible sealing gasket has a low heat transfer coefficient, which can achieve the effect of thermal bridging.
[0020] The cable tray sealing device of this utility model achieves sealing by setting a sealing gasket between the connecting plate and the first cover plate, so that the connection between the first cover plate and the cylinder has high airtightness.
[0021] The cable tray sealing device of this utility model uses a waterproof and vapor-proof membrane between one end of the cylinder and the inner side of the building (inner wall or inner panel), and a waterproof and breathable membrane between the other end of the cylinder and the outer side of the building (outer wall or outer panel). This achieves a tight seal between the gaps between the two ends of the cylinder and the wall or panel, thereby achieving the purpose of sealing and thermally breaking the bridge with ultra-low energy consumption. Attached Figure Description
[0022] Figure 1 This is a plan view of the sealing device for through-wall and plate bridge in ultra-low energy consumption buildings according to this utility model.
[0023] Figure 2 for Figure 1 Sectional view of AA.
[0024] Figure 3 for Figure 1 A magnified view of a portion of point B in the middle. Detailed Implementation
[0025] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.
[0026] See Figure 1 This utility model provides a sealing device for cable trays passing through walls and panels in ultra-low energy consumption buildings. It is suitable for installation on building structures such as walls, partitions, and floors. This cable tray sealing device provides a foundation for cable installation through walls and panels, achieving good airtightness and effective thermal bridging. The following description, in conjunction with the accompanying drawings, illustrates this utility model's sealing device for cable trays passing through walls and panels in ultra-low energy consumption buildings.
[0027] See Figure 1 This image shows a plan view of the through-wall and panel bridge sealing device in ultra-low energy consumption buildings according to this utility model. (See also...) Figure 3 It shows Figure 1 A magnified view of a portion of point B in the middle. (See below for reference.) Figure 1 and Figure 3 This invention describes the sealing device for through-wall and plate bridge structures in ultra-low energy consumption buildings.
[0028] like Figure 1 and Figure 3As shown, the wall-penetrating and panel-mounted bridge sealing device for ultra-low energy consumption buildings of this utility model includes a cylinder 21, a first cover plate 22, a second cover plate 23, and a flexible sealing gasket 24. The cylinder 21 passes through the wall or panel, which can be a building wall, partition, or floor slab. The cylinder 21 has openings at both ends, and each end extends beyond the corresponding wall or panel surface. The wall or panel surface includes an inner wall surface, an outer wall surface, an inner panel surface, and an outer panel surface. Specifically, one end of the cylinder 21 extends a certain distance beyond the inner wall or inner panel surface, and the other end extends a certain distance beyond the outer wall or outer panel surface. The distance the end of the cylinder 21 extends beyond the wall or panel surface should be at least 50mm. The first cover plate 22 and the second cover plate 23 are placed over the openings of the cylinder 21, meaning the first cover plate 22 and the second cover plate 23 are placed over the two openings of the cylinder 21. The first cover plate 22 is positioned closer to the opening, and the second cover plate 23 is positioned further away from the opening. Figure 2 As shown, the first cover plate 22 and the second cover plate 23 have cable holes 231 that communicate with the interior of the cylinder 21. The first cover plate 22 and the second cover plate 23 are fastened to the cylinder 21. A flexible sealing gasket 24 is sandwiched between the first cover plate 22 and the second cover plate 23. The flexible sealing gasket 24 has a through hole corresponding to the cable hole 231. The diameter of the through hole is smaller than the diameter of the cable to be inserted into the cylinder 21. The flexible sealing gasket 24 is elastic.
[0029] Since the diameter of the through hole on the flexible sealing gasket 24 is smaller than the diameter of the cable, when the cable passes through the cylinder 21, the flexible sealing gasket 24 is tightly fitted onto the cable through the through hole, thus achieving a seal at the connection between the cable and the first cover plate 22 and the second cover plate 23. This provides a good airtight effect and a good thermal bridge breaking effect at both ends of the cylinder 21.
[0030] In one specific embodiment of this utility model, such as Figure 2 As shown, the diameter of the cable hole 231 is larger than the diameter of the cable to be inserted into the cylinder 21.
[0031] Preferably, the diameter of the cable hole 231 is 5 mm larger than the cable diameter, and the diameter of the through hole on the flexible sealing gasket 24 is 5 mm to 10 mm smaller than the cable diameter.
[0032] Furthermore, the flexible sealing gasket 24 is a flame-retardant rubber gasket. The flame-retardant rubber gasket is 15mm thick, and its high elasticity ensures an efficient seal between the cable and the gasket.
[0033] Furthermore, the first cover plate 22 and the second cover plate 23 are made of steel plates. The thickness of the steel plates is 1mm. A flame-retardant rubber gasket is sandwiched between the two steel plates to form a sealing structure, which itself has a high thermal bridging effect.
[0034] In one specific embodiment of this utility model, such as Figures 1 to 3 As shown, a portion of the end of the cylinder 21 is folded outward to form a connecting plate 211, and the connecting plate 211 is fastened to the first cover plate 22 and the second cover plate 23 by fasteners 26.
[0035] The outer contour of the cylinder 21 is square, meaning it is a square cylinder. It is hollow inside, with openings at both ends in a U-shape. A flange, bent outwards at 90°, is provided at the edge of each opening, serving as a connecting plate 211 at the end of the cylinder 21. The cylinder 21 is preferably made of steel. The interior of the cylinder 21 forms a sealed cavity for accommodating cables.
[0036] Furthermore, a sealing gasket 25 is sandwiched between the connecting plate 211 and the first cover plate 22. The sealing gasket 25 is 2mm thick to improve the airtightness of the connection between the connecting plate and the first cover plate 22.
[0037] The connecting plate 211 has bolt holes, and the first cover plate 22 and the second cover plate 23 also have mounting holes corresponding to the bolt holes. The fastener 26 passes through the corresponding mounting holes on the first cover plate 22 and the second cover plate 23, as well as the bolt holes on the connecting plate 211, to achieve a fastening connection between the first cover plate 22 and the second cover plate 23 and the connecting plate 211. The fastener 26 can be a fastening screw, bolt, screw, or other connecting parts.
[0038] In one specific embodiment of this utility model, a waterproof and vapor-proof membrane is provided between the end of the cylinder 21 and the corresponding wall surface or panel surface (i.e., the inner wall surface or inner panel surface) located on the inner side.
[0039] A waterproof and breathable membrane is provided between the end of the cylinder 21 and the corresponding wall or panel (i.e., the outer wall or panel) located on the outside.
[0040] By using waterproof and breathable membranes to seal the gaps between the cylinder 21 and the wall and plate, the purpose of sealing and thermal bridging is achieved.
[0041] The installation process of the sealing device for through-wall and plate bridge in ultra-low energy consumption buildings according to this utility model is described below.
[0042] When constructing walls and slabs, the cylinder is embedded in the wall or slab, with both ends extending beyond the sides of the wall or slab. If the wall or slab is a precast structure, the cylinder can be inserted into pre-drilled holes in the wall or slab. The outer side of the cylinder and the inner wall of the hole are then sealed with waterproof mortar or similar materials. Next, sealing gaskets, a first cover plate, a flexible sealing gasket, and a second cover plate are installed at both ends of the cylinder. These are initially secured with fasteners to prevent them from falling off the ends of the cylinder. Then, cables are threaded through the cylinder, entering from one end and exiting from the other. After the cables have passed through, the first and second cover plates are securely connected to the connecting plate at the opening of the cylinder using fasteners. Alternatively, the second cover plate, flexible sealing gasket, first cover plate, and sealing gasket are first placed over the cable. Then, the cable is threaded into the cylinder, with the other end of the cable extending from the other end of the cylinder. The sealing gasket, first cover plate, flexible sealing gasket, and second cover plate are then placed over the cable, and finally, the sealing gaskets, first cover plate, flexible sealing gasket, and second cover plate on both sides are securely connected to the end of the cylinder. After the cable installation is complete, in accordance with passive building requirements, a waterproof vapor barrier membrane is used on the inside, and a waterproof breathable membrane is used on the outside to tightly seal the gaps between the end of the cylinder and the wall / panel, thereby achieving the purpose of sealing and thermally breaking the bridge when the cable tray passes through passive walls and panels in ultra-low energy building construction.
[0043] The present invention has been described in detail above with reference to the accompanying drawings and embodiments. Those skilled in the art can make various modifications to the present invention based on the above description. Therefore, certain details in the embodiments should not be construed as limiting the present invention, and the scope of protection of the present invention shall be defined by the appended claims.
Claims
1. A sealing device for through-wall and panel cable trays in ultra-low energy consumption buildings, characterized in that, include: A cylindrical body is inserted through a wall or panel, with openings at both ends and the two ends of the cylinder extending out of the corresponding wall or panel surface, respectively. A first cover plate and a second cover plate are provided at the opening of the cylinder. The first cover plate and the second cover plate have cable holes that communicate with the interior of the cylinder. The first cover plate and the second cover plate are fastened to the cylinder. A flexible sealing gasket is sandwiched between the first cover plate and the second cover plate. The flexible sealing gasket has a through hole corresponding to the cable hole. The diameter of the through hole is smaller than the diameter of the cable to be inserted into the cylinder. The flexible sealing gasket is elastic.
2. The sealing device for through-wall and slab cable trays in ultra-low energy consumption buildings as described in claim 1, characterized in that, The diameter of the cable hole is larger than the diameter of the cable to be inserted into the cylinder.
3. The sealing device for through-wall and slab bridge structures in ultra-low energy consumption buildings as described in claim 1, characterized in that, The end of the cylinder is partially folded outward to form a connecting plate, which is fastened to the first cover plate and the second cover plate by fasteners.
4. The sealing device for through-wall and slab bridge structures in ultra-low energy consumption buildings as described in claim 3, characterized in that, A sealing gasket is sandwiched between the connecting plate and the first cover plate.
5. The sealing device for through-wall and slab bridge structures in ultra-low energy consumption buildings as described in claim 1, characterized in that, The flexible sealing gasket is a flame-retardant rubber gasket.
6. The sealing device for through-wall and slab bridge structures in ultra-low energy consumption buildings as described in claim 1, characterized in that, The interior of the cylinder has a sealed cavity for accommodating cables.
7. The sealing device for through-wall and slab bridge structures in ultra-low energy consumption buildings as described in claim 1, characterized in that, The outer contour of the cylinder is square.
8. The sealing device for through-wall and slab bridge structures in ultra-low energy consumption buildings as described in claim 1, characterized in that, The first cover plate and the second cover plate are steel plates.
9. The sealing device for through-wall and slab cable trays in ultra-low energy consumption buildings as described in claim 1, characterized in that, A waterproof and vapor-barrier membrane is provided between the end of the cylinder and the corresponding wall or panel on the inner side.
10. The sealing device for through-wall and slab bridge structures in ultra-low energy consumption buildings as described in claim 1, characterized in that, A waterproof and breathable membrane is provided between the end of the cylinder and the corresponding wall or panel on the outside.