GB26410-2011

Explosion-proof fan

防爆通风机

GB 26410-2011 é uma norma nacional chinesa obrigatória vigente: Explosion-proof fan. Setor: Eletrônicos. Foco: Segurança de produtos. Entrada em vigor: 1 de jan. de 2012.

A aplicabilidade depende do escopo do produto, da via de certificação, dos avisos da autoridade competente e das regras de transição. Solicite uma tradução ou verifique a fonte antes de usar este registro em uma decisão de conformidade.

Visão geral de conformidade

Esta visão geral está disponível por enquanto apenas em inglês.

Escopo e aplicabilidade

This standard applies to general-purpose explosion-proof fans used for transporting flammable and explosive gases. It is specifically designed for environments where the medium temperature does not exceed 80°C, and the dust and solid impurity content is no more than 100mg/m³ with a diameter not exceeding 1mm. It does not apply to special-purpose explosion-proof fans, such as marine or coal mine explosion-proof fans. This standard is crucial for manufacturers of industrial ventilation equipment operating in hazardous environments.

Requisitos técnicos

The standard outlines comprehensive requirements for the design, manufacturing, and safety of explosion-proof fans. Key areas include aerodynamic performance, where the deviation of measured pressure and efficiency from specified values is strictly regulated. It also sets limits on noise levels and bearing temperature rise, alongside vibration velocity limits for both rigid and flexible supports. In terms of structural design, the standard mandates a minimum service life of 10 years and requires that rotating and stationary parts avoid friction to prevent sparks. Material selection is critical; for instance, if the impeller uses aluminum alloy, the inlet chamber and casing must be made of carbon steel. Specific material combinations are enforced to ensure no sparks are generated upon accidental contact. The standard details manufacturing and assembly requirements, including tolerances for radial clearance between the impeller and casing. It references various technical conditions for castings, welding, and riveting to ensure structural integrity. Furthermore, safety requirements are mandatory, particularly regarding the use of flameproof motors and electrical accessories compliant with GB 3836.1, GB 3836.2, and GB 3836.3. Proper grounding devices and protective guards are strictly required to prevent electrostatic sparks and ensure operational safety.

Métodos de ensaio

Testing procedures include mechanical operation tests to measure bearing temperature rise and vibration after stabilization. Aerodynamic performance tests are conducted according to standardized wind tunnel methods. Additionally, noise measurements and impeller overspeed tests are mandatory to verify structural integrity and compliance with safety limits.

Perguntas frequentes

What products are regulated under GB 26410-2011?

GB 26410-2011 regulates general-purpose explosion-proof fans designed to transport flammable and explosive gases, provided the medium temperature does not exceed 80°C and impurity levels are within specified limits.

Are there specific material requirements for explosion-proof fans under this standard?

Yes, the standard specifies strict material combinations to prevent sparks. For example, if an aluminum alloy impeller is used, the casing must be carbon steel. Materials that do not produce sparks upon friction must be selected for rotating and stationary parts.

What are the mandatory safety requirements for the electrical components?

The fans must be equipped with flameproof motors and electrical accessories that comply with GB 3836.1, GB 3836.2, and GB 3836.3. Additionally, permanent grounding devices and protective guards are mandatory.

The summary above provides a high-level overview of GB 26410-2011. To ensure complete compliance for your products entering the Chinese market, a precise and professional translation of the full technical specifications is essential. Purchase our high-quality English translation of GB 26410-2011 today to access all detailed parameters, tables, and testing procedures.

Indicações de aplicabilidade

Tipo: Segurança
CCS: J72
ICS: 23.120
Órgão competente: Ministry of Industry and Information Technology
Comitê técnico: Ministry of Industry and Information Technology