The installation of chemical exhaust pipes is directly related to the normal operation and safety of the ventilation system. The following aspects should be paid attention to during installation:

Preparation before installation

1. Material inspection: Check the specifications, models and quantities of PP pipes and related pipe fittings in detail to ensure that they meet the design requirements. Check the appearance quality of the material, such as whether the pipe wall is smooth, whether there are cracks, bubbles and other defects, to ensure that the quality of the material meets the standards.

2. Site survey: Measure the dimensions of the installation site on site, determine the direction, installation position and height of the pipeline, and ensure that there is no conflict with other equipment, pipelines, etc. Understand the environmental conditions on site, such as temperature, humidity, corrosiveness, etc., so as to take corresponding protective measures.

3. Tool preparation: Prepare various tools required for installation, such as hot melt welding machine, cutting tools, wrenches, tape measures, etc., and ensure that the performance of the tools is good and the accuracy meets the requirements.

Pipeline installation

1. Pipeline cutting: Use special cutting tools for cutting to ensure that the cut is flat and vertical, and avoid problems such as bevel and burrs. The length of the pipeline after cutting should meet the design requirements, and the error should be controlled within the allowable range.

2. Pipe connection: According to the material and design requirements of the pipeline, choose a suitable connection method, such as hot melt connection, rubber ring sealing connection, etc. Before connection, the connection parts of the pipeline and the pipe fittings should be cleaned to remove impurities such as oil, dust, etc. When hot-melt connection, the heating temperature and time should be strictly controlled to ensure that the connection is firm and leak-free.

3. Slope setting: In order to ensure smooth drainage and avoid water accumulation in the pipeline, the exhaust duct should be set with a certain slope. The size of the slope should be determined according to factors such as the pipe diameter, length and properties of the medium of the pipeline, and is generally not less than 0.003.

4. Support and hanger installation: The spacing of the support and hanger should be determined according to factors such as the pipe diameter, weight, and properties of the medium of the pipeline to ensure the stability and safety of the pipeline. The form of the support and hanger should be selected according to the installation location and environmental conditions of the pipeline. For example, the horizontal pipeline can adopt the hanger type, bracket type, etc., and the vertical pipeline can adopt the pipe clamp type, clamp type, etc. The support and hanger should be installed firmly and in close contact with the pipeline, and there should be no looseness or shaking.

Safety precautions

1. Fire and explosion prevention: There are flammable and explosive substances in the chemical production environment. Therefore, during the installation of the exhaust duct, the relevant regulations on fire and explosion prevention must be strictly observed. Smoking and opening fire are strictly prohibited at the construction site. If welding, cutting and other open flame operations are required, the opening fire approval procedures must be handled and corresponding fire prevention measures must be taken.

2. Anti-corrosion treatment: Chemical exhaust ducts are usually exposed to various corrosive media, so the pipelines should be treated with anti-corrosion before installation. The anti-corrosion treatment method should be selected according to the material of the pipeline and the nature of the medium, such as applying anti-corrosion paint, lining anti-corrosion materials, etc.

3. Ventilation: During the installation process, the construction site should be well ventilated and harmful gases and dust should be removed in time. If the installation work is carried out in a limited space, forced ventilation measures should be taken to ensure the safety of the construction workers.

4. Electrical safety: If electrical equipment, such as fans and motors, is involved in the Xicheng Environmental Protection Exhaust Duct System, ensure that the installation of the electrical equipment complies with the relevant provisions of electrical safety. Electrical equipment should be well grounded to avoid electric shock accidents.

Quality acceptance

1. Appearance inspection: Check whether the installation position, direction, slope, etc. of the exhaust duct meet the design requirements, whether the surface of the duct is flat and smooth, and whether there are defects such as cracks and deformation.

2. Connection inspection: Check whether the connection parts of the duct are firm and well sealed, and whether there is leakage. Pressure test, airtight test and other methods can be used for detection.

3. Performance test: Test the ventilation performance of the Xicheng environmental protection exhaust duct system, such as air volume, air pressure, wind speed, etc., to ensure that the ventilation effect of the system meets the design requirements.

4. Data collation: Organize various materials during the installation process, such as construction drawings, material inspection reports, installation records, etc., as the basis for project acceptance and quality traceability.