Detailed explanation of dust explosion-proof
Detailed Explanation of Dust Explosion Protection. A dust explosion environment is a common type of hazardous area, with the other being a gas explosion environment. Any solid substance in a fine powder state is referred to as dust; dust that can burn and explode is called combustible dust; metal dust is called conductive dust; dust suspended in the air is called suspended dust; dust that has settled is called settled dust.
Read More →
Henan Hualong Electric has passed the High-Tech Enterprise certification
Henan Hualong Electric Equipment Co., Ltd. (formerly Zhengzhou Hualong Explosion-Proof Electric) has been deeply engaged in the field of explosion-proof electrical manufacturing for over ten years. Since its establishment in 2011, it has focused on the research, development, and production of various explosion-proof distribution boxes, explosion-proof positive-pressure cabinets, and explosion-proof analysis shelters. Recently, it received notification from the Henan High-Tech Enterprise Certification Management Institution
Read More →
Startup method for positive-pressure explosion-proof cabinets.
The startup method for positive-pressure explosion-proof cabinets is divided into five steps according to the operating procedure sequence: pre-startup inspection, gas source debugging, pressure debugging, circuit debugging, and putting into operation. The following is a detailed introduction to the operation method for each step. 1. Pre-startup inspection: This step requires checking the integrity of the positive-pressure explosion-proof cabinet, ensuring no external damage, and consistency with the drawings...
Read More →
Which dust environments require the use of dust explosion-proof control boxes?
Dust explosion-proof control boxes are used in combustible dust environments. Combustible dust refers to dust that can undergo a violent oxidation reaction with a gaseous oxidant, characterized by the fact that when suspended in the air at a certain concentration range, it can be ignited. According to the International Organization for Standardization, solid suspended matter with a particle size of less than 75 μm is referred to as...
Read More →
Which manufacturer has complete explosion-proof certificates for analytical houses? Look for Henan Hualong Electric.
The explosion-proof certificate and CCC mandatory certification certificate for analytical houses are two essential qualification certificates for manufacturers. Our company's explosion-proof certificate is issued by the Nanyang Explosion-Proof Electrical Research Institute, with a validity period of 5 years. The certification model is type testing of analytical houses + on-site factory inspection + post-certification supervision. Analytical...
Read More →
Should an explosion-proof distribution box be made as flameproof type or positive-pressure type, and how should it be selected?
Many users are unclear about how to select an explosion-proof distribution box when purchasing, hesitating between flameproof and positive-pressure types. In fact, the selection method is simple, mainly considering two factors: cost and explosion-proof standards. Cost factor in selecting an explosion-proof distribution box: small-volume explosion-proof distribution boxes use cast aluminum alloy, with aluminum alloy shells.
Read More →