A drainage maintenance guide pipe applied to a steel structure module box joint
By designing drainage and maintenance conduits suitable for the joints of steel structure modular boxes, the problem of waterproofing and sealing in high-rise buildings has been solved, achieving efficient drainage with simplified construction and maintenance, and is applicable to steel structure modular boxes of different sizes and specifications.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CHINA CONSTR SCI & IND CORP LTD
- Filing Date
- 2025-07-03
- Publication Date
- 2026-08-04
AI Technical Summary
In modular steel structure buildings, especially high-rise buildings, waterproofing and sealing are difficult to guarantee during construction and use. Rainwater seepage cannot be drained in time, leading to delays in construction progress and difficulties in maintenance. Existing maintenance methods involve a large amount of work and are inefficient.
Design a drainage and maintenance conduit, including a water outlet, a guide section, and a drainage section. The water outlet is located at the lowest point and is flush with the decorative panel. The guide section is flush with and fixed to the corner post. The drainage section is set with a 0.5% slope and connected by a flange. The outer surface has fluorescent markings and is suitable for steel structure modular boxes of different sizes and specifications.
It achieves efficient drainage and reliable waterproofing, simplifies the construction and maintenance process, reduces costs, and is suitable for the standardization and modularization requirements of prefabricated steel structure buildings.
Smart Images
Figure CN224591603U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of prefabricated building technology, specifically to a drainage and maintenance conduit applied at the joint of a steel structure modular box. Background Technology
[0002] In the field of modular steel structure buildings, leak prevention and leakage point detection are crucial aspects of ensuring the quality and safety of projects during installation and use. With the construction industry's increasing demands for construction efficiency and space utilization, modular steel structure buildings have gained widespread application due to their prefabrication and assembly characteristics. However, the challenges of leak prevention and leakage detection continue to hinder the further development of this technology.
[0003] High-rise modular building projects, in particular, face numerous challenges during construction and use. Due to their height, significant horizontal wind loads occur during installation, causing substantial deformation and disturbance of the modular units. This makes it difficult to guarantee the quality of waterproofing between units, easily leading to waterproofing seal failure. Furthermore, the installation cycle for high-rise modular projects is generally long, inevitably involving rainy weather. During this period, if rainwater seeps into the gaps between units, the lack of effective drainage design and channels prevents timely drainage. This stagnant rainwater continuously erodes the unit structure, not only affecting construction progress but also creating significant hidden dangers for subsequent maintenance.
[0004] Currently, for seepage prevention in modular steel structure projects during installation, temporary protective measures are commonly used for areas where the assembled units have not yet had their joints sealed. However, this temporary protection method has significant limitations and cannot completely prevent rainwater infiltration. In actual construction, improper installation of protective materials or accidental damage to the protective structure during construction often leads to protection failure. Furthermore, to cope with rainy weather, not only is it necessary to frequently replace and repair temporary protective structures, but also to invest significant manpower and resources in rainwater cleanup, resulting in high time and economic costs. During use, when leakage problems occur, the existing leakage inspection and repair methods mainly involve removing the top plate of the unit and checking each joint one by one to identify the leakage point before sealing it. This inspection and repair method is not only massive in scale, but the sealing work also needs to be carried out in the confined and complex internal space of the unit, making the construction process extremely difficult and the repair efficiency low, failing to meet the actual project requirements. Utility Model Content
[0005] To overcome the shortcomings of existing technologies, this application provides a drainage and maintenance conduit for use at the joints of steel structure modular boxes, aiming to achieve simple and rapid leak-proof maintenance.
[0006] The technical means adopted by this utility model to solve its technical problem is: a drainage and maintenance conduit applied to the joint of a steel structure modular box, the improvement of which is that it includes a water outlet, a guide section, and a drainage section, wherein...
[0007] The water outlet is located at the lowest point, with its bottom flush with the bottom of the corner column of the box and extending out of the decorative panel;
[0008] The length of the guide section is the same as the width of the corner column of the box, and the guide section is fixed by spot welding at the position where it is flush with the corner column.
[0009] The horizontal length of the diversion section is the same as the length of the bottom frame beam of the box body, and it is set with a slope of 0.5%. It is fixed to the bottom side of the bottom frame beam of the box body by intermittent welding. The opening between the weld sections and the bottom frame beam of the box body is sealed with waterproof sealant.
[0010] The water outlet in the above technical solution includes a pipe opening, a built-in galvanized filter screen, and a rubber sealing sleeve. The rubber sealing sleeve is only used to seal during normal use. The pipe opening is polished smooth and fits tightly with the rubber sealing sleeve.
[0011] The guide section described in the above technical solution is made of DN20 galvanized round steel pipe with a wall thickness of 2.8mm; the inside is filled with rock wool and sealed with waterproof sealant, which tightly wraps the steel pipe; the guide section is fixed by spot welding at the position flush with the corner column, and the weld height hf = 3mm.
[0012] The diversion section described in the above technical solution uses a DN20 galvanized semi-circular steel pipe with the opening facing upwards. It is fixed to the bottom side of the bottom frame beam of the box body by intermittent welding. The weld height hf = 3mm, the weld length Lf = 50mm, and the spacing is 1000mm.
[0013] The drainage and maintenance conduit described in the above technical solution also includes a maintenance valve installed at the outlet of the water pipe. The maintenance valve is a manual gate valve and is connected to the outlet of the water pipe via a thread.
[0014] The water outlet, guide section, and diversion section described in the above technical solution are connected by a flange, and a sealing rubber gasket is provided at the flange connection, which is then tightened with bolts.
[0015] In the above technical solution, fluorescent marking strips are provided on the outer surfaces of both the guide section and the drainage section, and the fluorescent marking strips are continuously arranged along the length of the conduit.
[0016] The drainage and maintenance conduit described in the above technical solution is applicable to steel structure modular boxes of different sizes and specifications. By adjusting the length of the guide section, the horizontal length and slope of the drainage section, and the position of the outlet pipe, effective drainage can be achieved at the joints of different boxes.
[0017] The beneficial effects of this invention are:
[0018] The system collects leakage from the joints of the box-type structures via a diversion section, and directs the water to the lowest outlet pipe through a 0.5% slope of the horizontally arranged diversion section, forming a complete closed loop of "collection-diversion-discharge". The length of the diversion section matches the width of the corner column to ensure precise coverage of the joint leakage points. The horizontal length of the diversion section is consistent with the bottom frame beam, achieving full-span drainage. This system achieves multiple goals of efficient drainage, reliable waterproofing, convenient construction, and low-cost maintenance, and is particularly suitable for the standardization, modularity, and durability requirements of prefabricated steel structure buildings, demonstrating significant engineering application value and market competitiveness. Attached Figure Description
[0019] Figure 1 A side view of a drainage and maintenance catheter as shown in an embodiment of this utility model;
[0020] Figure 2 A partial plan view of a drainage and maintenance catheter shown in an embodiment of this utility model;
[0021] Figure 3 A cross-sectional view of a drainage and maintenance catheter shown in an embodiment of this utility model;
[0022] Figure 4 This is a schematic diagram illustrating the installation of a drainage and maintenance catheter according to an embodiment of the present invention. Detailed Implementation
[0023] The present invention will be further described below with reference to the accompanying drawings and embodiments.
[0024] The following will clearly and completely describe the concept, specific structure, and technical effects of this utility model in conjunction with embodiments and accompanying drawings, so as to fully understand the purpose, features, and effects of this utility model. Obviously, the described embodiments are only a part of the embodiments of this utility model, not all of them. Other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are all within the scope of protection of this utility model. Furthermore, all connections / linkages involved in the patent do not simply refer to direct contact between components, but rather to the ability to form a better connection structure by adding or reducing connecting accessories according to specific implementation conditions. The various technical features in this utility model can be combined interactively without contradicting each other.
[0025] like Figure 1-4 As shown, this application provides a drainage and maintenance conduit A for use at the joints of steel structure modular enclosures, including a water outlet 1, a guide section 2, and a drainage section 3, wherein...
[0026] The water outlet 1 is located at the lowest point, with its bottom flush with the bottom of the corner column of the box and extending out of the decorative panel.
[0027] The length of the guide section 2 is the same as the width of the corner column of the box body, and the guide section 2 is fixed by spot welding at the position where it is flush with the corner column.
[0028] The horizontal length of the diversion section 3 is the same as the length of the bottom frame beam of the box body. It is set with a slope of 0.5% and is fixed to the bottom side of the bottom frame beam of the box body by intermittent welding. The opening between the weld sections and the bottom frame beam of the box body is sealed with waterproof sealant.
[0029] In one possible implementation, the water outlet 1 includes a pipe opening, a built-in galvanized filter screen, and a rubber sealing sleeve. The rubber sealing sleeve is only used to seal during normal use. The pipe opening is polished smooth and fits tightly with the rubber sealing sleeve.
[0030] The galvanized filter screen can intercept solid impurities such as dust, debris, and welding slag in the water flow, preventing them from entering the guide section and diversion section, and ensuring that the drainage channel is unobstructed for a long time; the rubber sealing sleeve is used to seal the pipe opening to prevent external rainwater and moisture from flowing back into the box through the water outlet, or to prevent water vapor leakage inside the box.
[0031] The rubber sealing sleeve only seals during normal use and can be quickly disassembled during maintenance, allowing staff to clean, inspect, or replace parts inside the conduit (such as filters or flow guides) through the pipe opening. This "openable" sealing design balances waterproofing requirements with ease of maintenance.
[0032] In one possible implementation, the guide section 2 is made of DN20 galvanized round steel pipe with a wall thickness of 2.8mm; the inside is filled with rock wool and sealed with waterproof sealant, which tightly wraps the steel pipe; the guide section is fixed by spot welding at the position flush with the corner column, and the weld height hf = 3mm.
[0033] The galvanized layer effectively resists the corrosion of rainwater and humid air, preventing steel pipes from rusting and perforating, and extending the service life of the drainage section in outdoor or humid environments. Rock wool reduces heat exchange between the water inside the pipes and the external environment, preventing condensation on the pipe surface (such as condensation formation in low winter temperatures), and preventing condensation from leaking into the enclosure or corroding the steel structure. This design not only satisfies the drainage function at the joints of the steel structure modules but also enhances the system's durability and adaptability through multiple layers of protection.
[0034] In one possible implementation, the drainage section 3 is made of DN20 galvanized semi-circular steel pipe with the opening facing upward. It is fixed to the bottom side of the bottom frame beam of the box body by intermittent welding, with a weld height hf = 3mm, a weld length Lf = 50mm, and a spacing of 1000mm.
[0035] The semi-circular steel pipe has an upward-facing opening, which can directly collect water accumulated at the joints of the box body and naturally drain it to the outlet at the lowest point using gravity. Compared with a closed pipe, the open design reduces water flow resistance and avoids poor drainage due to pipe bends or blockages. While ensuring efficient drainage, it also takes into account the protection of the steel structure, construction efficiency, and economy.
[0036] In one possible implementation, the drainage and maintenance conduit also includes a maintenance valve located at the outlet 1. The maintenance valve is a manual gate valve that is connected to the outlet via a thread, facilitating the inspection and cleaning of the inside of the conduit.
[0037] During normal drainage, the valve is open to ensure smooth water flow. During maintenance, the valve is closed to temporarily cut off the water flow, facilitating filter cleaning, pipe unclogging, or component replacement. The threaded connection allows for quick disassembly of the valve without tools (or with just a simple wrench), facilitating regular checks of valve sealing performance or replacement of worn parts. The threaded connection, combined with sealing tape or rubber gaskets, effectively prevents leakage, providing a controllable, reliable, and economical maintenance solution for the drainage system of the steel structure modular enclosure.
[0038] In one possible implementation, the outlet pipe 1, the guide section 2, and the diversion section 3 are connected by a flange, and a sealing rubber gasket is provided at the flange connection, which is then fastened with bolts.
[0039] The flange is bolted to form a rigid connection, which can withstand the mechanical stress caused by temperature changes and load deformation of the steel structure module. The sealing rubber gasket (such as EPDM material) has good elastic compression performance and can fill the micro gaps (≤0.1mm) on the flange surface under the action of bolt preload, achieving the IP67 waterproof standard. The flange connection design, through the dual guarantee of mechanical strength and sealing performance, realizes the reliable connection, convenient maintenance and long-term durability of the drainage and maintenance conduit.
[0040] In one possible implementation, fluorescent marking strips are provided on the outer surfaces of both the guide section 2 and the drainage section 3, and the fluorescent marking strips are continuously arranged along the length of the conduit.
[0041] The fluorescent marking strip can continuously emit light in the dark after being illuminated by natural light or artificial light source. Even in unlit basements, tunnels or nighttime scenes, it can clearly show the direction of the duct, avoid personnel collisions or equipment misoperation, and realize the safety warning, efficient inspection and positioning and long-term maintenance-free operation of the drainage duct system in low light environment.
[0042] In one possible implementation, the drainage and maintenance conduit is suitable for steel structure modular boxes of different sizes and specifications. By adjusting the length of the guide section 2, the horizontal length and slope of the drainage section 3, and the position of the outlet pipe 1, effective drainage can be achieved at the joints of different boxes.
[0043] The design, through a parametrically adjustable structure, enables "tailor-made" solutions for different steel structure modular boxes, significantly improving construction convenience and economy while ensuring efficient drainage.
[0044] The above is a detailed description of the preferred embodiments of the present utility model. However, the present utility model is not limited to the described embodiments. Those skilled in the art can make various equivalent modifications or substitutions without departing from the spirit of the present utility model. All such equivalent modifications or substitutions are included within the scope defined by the claims of this application.
Claims
1. A drainage maintenance conduit applied to the joint of a steel structure module box, characterized in that, This includes the outlet pipe, the guide section, and the diversion section, among which, The water outlet is located at the lowest point, with its bottom flush with the bottom of the corner column of the box and extending out of the decorative panel; The length of the guide section is the same as the width of the corner column of the box, and the guide section is fixed by spot welding at the position where it is flush with the corner column. The horizontal length of the diversion section is the same as the length of the bottom frame beam of the box body, and it is set with a slope of 0.5%. It is fixed to the bottom side of the bottom frame beam of the box body by intermittent welding. The opening between the weld sections and the bottom frame beam of the box body is sealed with waterproof sealant.
2. The drainage inspection conduit applied to the joint of the steel structure modular box according to claim 1, characterized in that, The water outlet includes a pipe opening, a built-in galvanized filter screen, and a rubber sealing sleeve. The rubber sealing sleeve is only used to seal during normal use. The pipe opening is polished smooth and fits tightly with the rubber sealing sleeve.
3. The drainage inspection conduit applied to the joint of the steel structure module box according to claim 1, characterized in that, The guide section is made of DN20 galvanized round steel pipe with a wall thickness of 2.8mm; the inside is filled with rock wool and sealed with waterproof sealant, which tightly wraps the steel pipe; the guide section is fixed by spot welding at the position flush with the corner column, and the weld height hf = 3mm.
4. The drainage access conduit for use in the joint of steel modular box, according to claim 1, wherein, The diversion section uses a DN20 galvanized semi-circular steel pipe with the opening facing upwards. It is fixed to the bottom side of the bottom frame beam of the box body by intermittent welding. The weld height hf = 3mm, the weld length Lf = 50mm, and the spacing is 1000mm.
5. The drainage access conduit for use in the joint of steel modular box, according to claim 1, wherein, The drainage and maintenance conduit also includes a maintenance valve installed at the outlet of the water pipe. The maintenance valve is a manual gate valve that is connected to the outlet of the water pipe via a thread.
6. The drainage access conduit for use in the junction of steel structure modular box according to claim 1, characterized in that, The outlet pipe, the guide section, and the diversion section are connected by a flange, and a sealing rubber gasket is provided at the flange connection, which is fastened with bolts.
7. The drainage access conduit for use in the joint of the steel modular box, according to claim 1, wherein, Fluorescent marking strips are provided on the outer surfaces of both the guide section and the drainage section, and the fluorescent marking strips are continuously arranged along the length of the conduit.
8. The drainage access conduit for use in the junction of steel modular box according to claim 1, characterized in that, The drainage and maintenance conduit is suitable for steel structure modular boxes of different sizes and specifications. By adjusting the length of the guide section, the horizontal length and slope of the drainage section, and the position of the outlet pipe, effective drainage can be achieved at the joints of different boxes.