In the industrial and construction fields, pipeline insulation engineering is a key link in energy conservation and emission reduction. A comprehensive standard system for insulation materials directly determines the energy efficiency performance and long-term reliability of the system.
1、 Core indicators of performance standards
Pipeline insulation materials need to meet five core performance requirements:
Thermal conductivity: thermal conductivity of high-quality materials at room temperature (25 ℃) should be ≤ 0.035W/(m · K), such as air gel thermal insulation blanket up to 0.018W/(m · K)
Density requirement: usually controlled within the range of 20-150kg/m 3, rock wool board density ≥ 140kg/m 3 can meet industrial high temperature scenarios
Compressive strength: The compressive strength of the material at the support point of the bracket should be ≥ 0.3MPa to ensure long-lasting support
Moisture content standard: Under long-term humidity conditions, it should be ≤ 5%. The use of hydrophobic materials can maintain stable insulation performance
Fire rating: Complies with GB 8624-2012 standard, standard for industrial pipelines made of Class A non combustible materials
2、 Application scenario adaptation standards
Special materials corresponding to different temperature conditions:
Low temperature pipelines (≤ -50 ℃): Closed cell rubber sponge (oxygen index ≥ 32) is commonly used
Room temperature pipeline (0-120 ℃): Modified aluminum silicate plate and other materials with excellent comprehensive performance
High temperature pipeline (>120 ℃): Calcium silicate board or ceramic fiber module (long-term use temperature ≥ 800 ℃)
3、 Standard requirements and certification system
The national standard GB/T 4272-2018 "General Principles for Insulation Technology of Equipment and Pipelines" clearly stipulates the selection principles, and SH/T 3010-2022 Petrochemical Standard emphasizes that materials should pass:
ISO 9001 Quality System Certification
EN 14041 Environmental Requirements
Weather resistance test (≥ 1000h salt spray test)
4、 Technological innovation drives standard upgrading
The new aerogel material reduces the insulation thickness of the pipeline by 40% -60%, which conforms to the ASME B31.3 process pipeline specification. The infrared reflective aluminum foil composite layer increases the solar radiation heat reflectivity to 95%, meeting the LEED certification requirements for green buildings.
Professional design needs to combine SH/T 3522-2017 "Design Specification for Thermal Insulation Engineering of Petrochemical Equipment and Pipelines", and optimize the thickness and structure of the insulation layer through CFD simulation. Regularly check the thermal conductivity attenuation value (annual attenuation ≤ 1%) to ensure long-term energy-saving effect.
The scientific standardization system is the safety guarantee for pipeline insulation systems, and the combination of advanced materials and standardized design can play a key role in the energy efficiency revolution.
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