The Wall Through Conduit, often referred to as a wall pipe, waterproof conduit, or wall embedded pipe, is a versatile hardware fitting or insulation support that plays a critical role in facilitating the seamless passage of pipelines through walls. It finds extensive applications across various domains like construction and electricity. Let's dive deeper into its classification, structural nuances, essential purposes, and key selection insights:
Classification and Characteristics
• Categorized by Waterproofing Features and Utilization Scenarios
Rigid Waterproof Sleeve: This robust sleeve boasts a design with a thick-walled steel pipe and a wing ring, which is a circular steel plate ingeniously fitted onto the steel pipe. It offers exceptional strength and rigidity, adeptly withstanding significant pressure and tension without succumbing to deformation or breakage. This ensures the pipeline's safety and longevity. Its meticulously crafted material and structural design endow it with superb waterproof capabilities, effectively shielding against moisture and rainwater, and featuring robust corrosion resistance against harsh environmental and chemical factors. Predominantly utilized in basements and similar areas where stringent waterproofing is imperative, and where pipeline vibration or expansion is not a concern. For instance, preventing groundwater from infiltrating a building's basement through the pipeline walls.
Flexible Waterproof Conduit: Characterized by its external wing rings and internal components like retaining rings and flange threads, this conduit is tailored for structures where pipelines traverse walls subjected to vibration or necessitate robust waterproofing. Ideal applications include civil defense walls, water tanks, and water pump rooms. In scenarios like a sewage treatment plant's water tank, it not only thwarts water leakage but also accommodates operational vibrations seamlessly.
• Segmented by Material Composition and Intended Use
Ceramic Insulated AC Wall Bushing (Porcelain Bushing): This configuration comprises ceramic parts, mounting flanges, and conductors, offering insulation and support for conductive elements traversing walls or grounding structures. It is predominantly utilized in the power sector for its reliable performance.
Dry Type Capacitive AC Wall Bushing (Silicone Rubber Bushing): This innovative, oil-free, gas-free, porcelain-free bushing stands out with its compact size and lightweight design. It demands minimal maintenance, is fire-resistant, explosion-proof, and comes equipped with high-precision through-type current transformers. The even voltage distribution across its surface, enhanced by the use of silicone rubber as an external insulator, significantly amplifies its pollution flashover voltage performance.
Structure
Typically, it incorporates ceramic components, mounting flanges, and conductors (for conductive through-wall sleeves). The busbar through-wall conduit omits conductive elements. While some products utilize mechanical clamping, the prevalent fixing method for porcelain sleeves and flanges employs cement adhesive. Copper conductors are firmly secured using centering washers and nuts, while copper and aluminum conductors rely on centering washers and open pins. To mitigate initial corona and enhance voltage uniformity, certain voltage-level bushings (20, 35kV) incorporate structural measures such as thickening porcelain walls and umbrellas near the flange, applying semiconductor glaze on designated porcelain areas, and baking them to optimize electric field distribution.
Purpose
In architectural applications, these sleeves safeguard pipelines traversing walls while adhering to waterproofing, vibration reduction, and other essential requirements. This assures the structural integrity of buildings and the optimal functionality of pipeline systems. They are extensively deployed across diverse building plumbing protocols, fire protection frameworks, ventilation systems, and other pipeline engineering endeavors.
In the realm of electricity, these components are integral to power plants, substations, distribution apparatus, and high-voltage electrical appliances, facilitating the passage of conductive parts through walls or grounding structures. They deliver insulation and support, ensuring the safety and reliability of power transmission.
Key Selection Points
• Determine Type and Pattern: Select according to indoor or outdoor installation needs. Choose wall conduit with a conductor or opt for a busbar type wall conduit without a conductor, aligning with the intended application.
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