Roof drainage structure and fabricated building
By designing the roof drainage structure, including drainage pipes, sleeves, bases, and edge pressing parts, the leakage problem of prefabricated buildings was solved, enabling smooth drainage of rainwater and safe operation of equipment.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- GUANGDONG POWER TRANSMISSION & TRANSFORMATION ENG
- Filing Date
- 2025-04-17
- Publication Date
- 2026-05-15
AI Technical Summary
Existing prefabricated building roof drainage structures have leakage problems, which affect the safe operation of prefabricated steel structure buildings, especially the equipment safety of substations.
A roof drainage structure was designed, including a drain pipe, a sleeve, a base, and a pressing edge. Through sealed connection and inclined setting, rainwater accumulation is avoided. The one-piece molded structure reduces gaps, and combined with keel parts, collection hoppers, and slopes, rainwater can be smoothly discharged.
It effectively prevents rainwater retention, improves the drainage performance of prefabricated buildings, reduces the risk of leakage, and ensures the safe operation of equipment.
Smart Images
Figure CN224244264U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of prefabricated building technology, and in particular to a roof drainage structure and a prefabricated building. Background Technology
[0002] Prefabricated construction refers to a construction process where, before construction begins, manufacturers transfer much of the traditional on-site work to factories. According to national standards and design requirements, prefabricated building components and accessories (such as floor slabs, wall panels, stairs, balconies, etc.) are manufactured in the factory. These components are then transported to a specific location, where specialized workers assemble them using reliable connection methods, combining them with other on-site construction work to form a complete prefabricated building system. Prefabricated buildings mainly include precast concrete structures, steel structures, and modern timber structures.
[0003] The roof drainage design of prefabricated steel structure buildings must fully consider waterproofing and drainage efficiency to avoid affecting the safe operation of equipment and facilities due to leakage. In the existing technology of roof drainage structures for prefabricated steel structure buildings, recessed structural gutters are commonly used. This structure is prone to water accumulation, increasing the risk of leakage.
[0004] The applicant has discovered that the prior art has at least the following technical problems: the roof drainage structure in the prior art is unreasonable, and there is a problem of leakage in the drainage pipes, which affects the electrical equipment in the prefabricated steel structure building, especially for the prefabricated steel structure substation, threatening the safe operation of the substation. Utility Model Content
[0005] The purpose of this utility model is to provide a roof drainage structure and prefabricated building to solve the technical problem of unreasonable roof drainage structure and leakage of drainage pipes in prefabricated buildings in the prior art; the various technical effects of the preferred technical solution among the many technical solutions provided by this utility model are described in detail below.
[0006] To achieve the above objectives, the present invention provides the following technical solution:
[0007] The roof drainage structure provided by this utility model includes a drainage pipe, a sleeve, a base, and a pressing edge fixed to the top of the parapet wall, wherein:
[0008] The sleeve is fitted over the drain pipe and is sealed to the outer wall of the drain pipe.
[0009] The base and the sleeve are integrally formed. The parapet wall has a wall hole. The base is fixed in the wall hole. The sleeve passes through the wall hole. The sleeve and the base seal the gap between the drain pipe and the wall hole.
[0010] The pressing edge is inclined, allowing water to flow along the pressing edge to the base of the parapet wall and be discharged from the drain pipe.
[0011] Preferably, the drain pipe, the base, and the sleeve are integrally formed.
[0012] Preferably, the drain pipe includes a fixedly connected horizontal pipe section, an arc-shaped connecting pipe section, and a vertical pipe section, wherein:
[0013] The sleeve is fitted over the horizontal pipe section, and a sealant is used to seal the gap between the sleeve and the horizontal pipe. The two ends of the arc-shaped connecting pipe section are respectively connected to the horizontal pipe section and the vertical pipe section, and the vertical pipe section discharges water to the outside.
[0014] Preferably, the roof drainage structure further includes a keel member, which is fixed to the parapet wall, and the base is welded and fixed to the keel member.
[0015] Preferably, the roof drainage structure further includes a collection hopper located at the base of the parapet wall, with the opening of the collection hopper facing the lower end of the pressing edge portion. The collection hopper is connected to the pressing edge portion via a flashing, and the collection hopper is connected to the drain pipe.
[0016] Preferably, the roof drainage structure further includes a ramp, which is disposed opposite to the collection hopper and gradually extends upward in a direction away from the collection hopper.
[0017] Preferably, a decorative edge is fixedly provided around the perimeter of the wall opening, the decorative edge including an upper decorative edge and a lower decorative edge, wherein:
[0018] The bottom wall of the upper trim edge is gradually inclined downwards along the direction closer to the outside, and the top wall of the lower trim edge is gradually inclined downwards along the direction closer to the outside.
[0019] Preferably, the wall hole is a rectangular hole or a circular hole.
[0020] Preferably, the cross-section of the drain pipe is rectangular or circular.
[0021] This utility model also provides a prefabricated building, including the above-mentioned roof drainage structure.
[0022] Compared with the prior art, the roof drainage structure and prefabricated building provided by this utility model have the following advantages: the pressing edge of the top of the parapet wall allows rainwater to flow naturally to the base of the parapet wall, avoiding rainwater accumulation; the sleeve and base of the drainage pipe are integrally formed, effectively reducing the gap between the pipeline and the parapet wall structure and preventing water seepage; the drainage pipe discharges the rainwater to the outside, preventing rainwater from stagnating on the roof and improving the drainage performance of the prefabricated building. Attached Figure Description
[0023] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0024] Figure 1 This is a cross-sectional view of the roof drainage structure;
[0025] Figure 2 This is an external view of the roof drainage structure;
[0026] Figure 3 This is a schematic diagram of the fitting structure of the drain pipe, sleeve, and base.
[0027] In the diagram: 1. Drainage pipe; 101. Horizontal pipe section; 102. Arc-shaped connecting pipe section; 103. Vertical pipe section; 2. Sleeve; 3. Base; 4. Edge pressing part; 5. Parapet wall; 51. Wall hole; 6. Collection hopper; 7. Flashing; 8. Slope; 9. Keel piece; 10. Sealant; 11. Upper trim; 12. Lower trim; 13. Expansion anchor. Detailed Implementation
[0028] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be described in detail below. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other implementation methods obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.
[0029] In the description of this utility model, it should be understood that the terms "center," "length," "width," "height," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and "side," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.
[0030] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0031] This utility model provides a roof drainage structure and prefabricated building that prevents rainwater from accumulating on the roof and improves the drainage performance of the prefabricated building.
[0032] The following is combined Figures 1-3 The technical solution provided by this utility model will be described in more detail.
[0033] Example 1:
[0034] The roof drainage structure provided by this utility model includes a drainage pipe 1, a sleeve 2, a base 3, and a pressing edge part 4 fixed to the top of the parapet wall 5. The sleeve 2 is fitted over the drainage pipe 1 and is sealed to the outer wall of the drainage pipe 1. The base 3 and the sleeve 2 are integrally formed. The parapet wall 5 has a wall hole 51. The base 3 is fixed inside the wall hole 51. The sleeve 2 passes through the wall hole 51. The sleeve 2 and the base 3 seal the gap between the drainage pipe 1 and the wall hole 51. The pressing edge part 4 is inclined so that water can flow along the pressing edge part 4 to the base of the parapet wall 5 and be discharged from the drainage pipe 1.
[0035] The edge pressing part 4 is fixed to the parapet wall 5 by expansion anchor bolts 13. The slope of the edge pressing part 4 is not less than 5°, so that rainwater flows naturally to the base of the parapet wall 5 and avoids rainwater accumulation.
[0036] In steel structure buildings, the parapet wall (5) refers to a low wall structure located at the edge of a roof or platform, typically made of steel or other lightweight materials, and is an important component of the building facade. The parapet wall (5) is located around the perimeter of the roof or steel structure platform, with a height usually between 0.6 meters and 1.5 meters, depending on whether the roof is accessible. For example, national standards stipulate that the height of the parapet wall (5) on accessible roofs should not be less than 1.1 meters and not more than 1.5 meters; while on inaccessible roofs, it is usually around 0.6 meters. Unlike traditional brick-concrete structures, steel structure parapet walls (5) often use lightweight materials such as profiled steel sheets and galvanized steel, connected to the main structure by welding or bolts, combining lightweight design with high strength.
[0037] The roof drainage structure provided by this utility model allows rainwater to flow naturally to the base of the parapet wall 5 at the top edge 4, preventing rainwater accumulation. The sleeve 2 and the base 3 of the drain pipe 1 are integrally formed, effectively reducing the gap between the pipeline and the parapet wall 5 structure and preventing water seepage. The drain pipe 1 discharges the rainwater to the outside, preventing rainwater from stagnating on the roof and improving the drainage performance of the prefabricated building.
[0038] As an optional implementation, in this embodiment, the drain pipe 1, the base 3, and the sleeve 2 are integrally formed. One end of the drain pipe 1 and the sleeve 2 are integrally formed, and the gap between the sleeve 2 and the drain pipe 1 is sealed by a structure such as sealant 10, thereby improving the sealing performance.
[0039] As an optional implementation method, combined with Figure 1 and Figure 3 As shown, the drain pipe 1 includes a fixedly connected horizontal pipe section 101, an arc-shaped connecting pipe section 102, and a vertical pipe section 103, wherein: a sleeve 2 is fitted outside the horizontal pipe section 101, and a sealant 10 is used to seal the gap between the sleeve 2 and the horizontal pipe; the two ends of the arc-shaped connecting pipe section 102 are respectively connected to the horizontal pipe section 101 and the vertical pipe section 103, and the vertical pipe section 103 drains water to the outside.
[0040] The horizontal pipe section 101, the arc-shaped connecting pipe section 102, and the vertical pipe section 103 are integrally molded structures, requiring no additional connecting structures, resulting in overall stability and good sealing. The horizontal pipe section 101 guides water to the arc-shaped connecting pipe section 102 and the vertical pipe section 103, while rainwater flows out to the outdoors along the vertical pipe under the action of gravity, facilitating the smooth drainage of rainwater.
[0041] As an optional implementation, see Figure 1 As shown, the roof drainage structure also includes a keel 9, which is fixed to the parapet wall 5, and the base 3 is welded and fixed to the keel 9.
[0042] Specifically, the keel component 9 can be a C-shaped snap-fit keel. The keel component 9 is fixed to the parapet wall 5 near the wall hole 51. The base 3 is welded to the keel component 9. No additional sealing structure is required, thus achieving the fixation of the integrated base 3 and sleeve 2.
[0043] As an optional implementation, see Figure 1 As shown, the roof drainage structure also includes a collection hopper 6, which is located at the base of the parapet wall 5. The opening of the collection hopper 6 faces the lower end of the pressing edge part 4. The collection hopper 6 is connected to the pressing edge part 4 through a flashing 7, and the collection hopper 6 is connected to the drain pipe 1.
[0044] A collection hopper 6 is installed at the base of the parapet wall 5 to collect rainwater from the roof. The collection hopper 6 is connected to the drain pipe 1 that passes through the parapet wall 5, so that the rainwater can be smoothly discharged to the outdoor ground level, preventing rainwater from stagnating on the roof and preventing the drain pipe 1 from passing through the indoor machine room.
[0045] Among them, flashing 7 is a key waterproofing structure in buildings used to prevent rainwater leakage. Its core function is to prevent rainwater from seeping into the building interior along the joints through waterproofing materials and structural design, while protecting the edges of the waterproofing layer from damage. Flashing 7 is an existing structure and will not be described in detail here.
[0046] As an optional implementation, see Figure 1 As shown, the roof drainage structure also includes a ramp 8, which is set opposite to the collection hopper 6, and the ramp 8 is set upwards in a direction away from the collection hopper 6.
[0047] The ramp 8 prevents rainwater from entering the indoor side of the collection hopper 6, thus facilitating the flow of rainwater from the collection hopper 6 to the drain pipe 1.
[0048] As an optional implementation, see Figure 1 and Figure 2 As shown, a decorative edge is fixedly provided around the wall hole 51. The decorative edge includes an upper decorative edge 11 and a lower decorative edge 12. The bottom wall of the upper decorative edge 11 is gradually inclined downward along the direction close to the outside, and the top wall of the lower decorative edge 12 is gradually inclined downward along the direction close to the outside.
[0049] The exterior wall opening is decorated with trim, which can be a steel plate with a slope, forming the aforementioned upper trim 11 and lower trim 12. The bottom wall of the upper trim 11 gradually slopes downwards towards the exterior, and the top wall of the lower trim 12 also gradually slopes downwards towards the exterior, guiding rainwater to drain quickly and preventing moisture accumulation. Furthermore, drip lines should be designed around the upper trim 11 and lower trim 12 of the wall opening 51 to prevent rainwater from flowing down the wall and causing pollution or erosion.
[0050] As an optional implementation, see Figure 2 The wall hole 51 is a rectangular or circular hole. Preferably, such as... Figure 2 The wall hole 51 is a rectangular hole, which facilitates the provision of space for subsequent waterproofing and sealing treatment.
[0051] As an optional implementation, the drain pipe 1 has a rectangular or circular cross-section. See also Figure 2 Preferably, the cross-section of the drain pipe 1 is rectangular, which can adapt to the shape of the wall hole 51 and improve drainage efficiency.
[0052] Example 2:
[0053] This embodiment provides a prefabricated building, including the aforementioned roof drainage structure.
[0054] This prefabricated building can be a prefabricated steel structure building. For example, when applied to a prefabricated steel structure substation, an integrated steel sleeve 2, base 3 and drainage pipe 1 are used together to effectively reduce the gap between drainage pipe 1 and parapet wall 5, avoid water seepage, improve waterproofing and drainage efficiency, and avoid affecting the safe operation of equipment and facilities due to leakage.
[0055] The specific features, structures, or characteristics described in this specification may be combined in any suitable manner in one or more embodiments or examples.
[0056] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.
[0057] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.
Claims
1. A roof drainage structure, characterized in that, Includes a drain pipe, sleeve, base, and sealing edge fixed to the top of the parapet wall, wherein: The sleeve is fitted over the drain pipe and is sealed to the outer wall of the drain pipe. The base and the sleeve are integrally formed. The parapet wall has a wall hole. The base is fixed in the wall hole. The sleeve passes through the wall hole. The sleeve and the base seal the gap between the drain pipe and the wall hole. The pressing edge is inclined, allowing water to flow along the pressing edge to the base of the parapet wall and be discharged from the drain pipe.
2. The roof drainage structure according to claim 1, characterized in that, The drain pipe, the base, and the sleeve are integrally formed.
3. The roof drainage structure according to claim 1, characterized in that, The drainage pipe includes a fixed horizontal pipe section, an arc-shaped connecting pipe section, and a vertical pipe section, wherein: The sleeve is fitted over the horizontal pipe section, and a sealant is used to seal the gap between the sleeve and the horizontal pipe. The two ends of the arc-shaped connecting pipe section are respectively connected to the horizontal pipe section and the vertical pipe section, and the vertical pipe section discharges water to the outside.
4. The roof drainage structure according to claim 1, characterized in that, The roof drainage structure also includes a keel component, which is fixed to the parapet wall, and the base is welded and fixed to the keel component.
5. The roof drainage structure according to claim 1, characterized in that, The roof drainage structure also includes a collection hopper, which is located at the base of the parapet wall. The opening of the collection hopper faces the lower end of the pressing edge. The collection hopper is connected to the pressing edge via a flashing, and the collection hopper is connected to the drain pipe.
6. The roof drainage structure according to claim 5, characterized in that, The roof drainage structure also includes a ramp, which is arranged opposite to the collection hopper and gradually moves upward in a direction away from the collection hopper.
7. The roof drainage structure according to claim 1, characterized in that, A decorative edge is fixedly provided around the perimeter of the wall opening, the decorative edge including an upper decorative edge and a lower decorative edge, wherein: The bottom wall of the upper trim edge is gradually inclined downwards along the direction closer to the outside, and the top wall of the lower trim edge is gradually inclined downwards along the direction closer to the outside.
8. The roof drainage structure according to claim 1, characterized in that, The wall hole is a rectangular hole or a circular hole.
9. The roof drainage structure according to claim 8, characterized in that, The cross-section of the drain pipe is rectangular or circular.
10. A prefabricated building, characterized in that, Includes the roof drainage structure as described in any one of claims 1-9.