Insulated flange is a connecting device used in pipeline systems, which has the characteristic of isolating current or heat. The following is a general introduction to insulated flanges:
Size
Common sizes include different specifications such as DN15 to DN1200, and specific sizes need to be selected based on actual usage and standards.
Pressure
The pressure resistance performance of insulated flanges depends on their manufacturing materials and design standards. Generally speaking, it can meet certain work pressure requirements, such as common standards such as PN10 and PN16.
Classification
Insulated flanges can be classified into different types based on their structure and function, such as:
1. Bolted flange: connected by bolts, suitable for general pipeline connections.
2. Welding flange: Connected by welding, commonly used in high-temperature and high-pressure environments.
3. Rubber flange: using rubber or other insulation materials, suitable for occasions that require electrical or thermal isolation.
Features
1. Insulation performance: The main feature is the ability to effectively isolate current or heat, prevent interference and damage.
2. Corrosion resistance: Made of corrosion-resistant materials, suitable for corrosive environments such as chemical engineering.
3. Easy to install: Usually bolted or welded for easy installation.
Advantages and disadvantages
Advantage
Provides electrical and thermal isolation, suitable for special environments; Good corrosion resistance; Easy to install.
Disadvantage
The cost is relatively high; In certain high-pressure and high-temperature environments, more complex designs may be required.
Application scope
Insulated flanges are widely used in various industries, including but not limited to:
1. Chemical industry: Pipeline systems that require insulation for chemical media.
2. Power industry: In situations where electrical isolation is required, such as cable connections.
3. Metallurgical industry: Pipeline connections in high-temperature and high-pressure environments.
4. Other industrial fields: occasions with special requirements for current or heat conduction.
When selecting insulation flanges, it is necessary to determine the appropriate type and specification based on the specific usage scenario, medium characteristics, and working conditions.
Rigor test
1.Insulating joints and insulating flanges that have passed the strength test should be tested for tightness one by one at an ambient temperature of not less than 5°C. The test requirements should be in accordance with the provisions of GB 150.4.
2.The tightness test pressure should be stable for 30 minutes at 0.6MPa pressure and 60 minutes at design pressure. The test medium is air or inert gas. No leakage is considered qualified.
Post time: Jan-23-2024
