Industrial air conditioning ventilation duct installation process

1. When the valve is closed to the pipeline and accessories at the engineering port, 23mm thick steel plate should be used for welding. The weld should be full, even and tight.

2. Ventilation pipes in contaminated areas should be welded. The ventilation pipe and the globe valve shall be connected to the flange with the sealing groove, and the contacts shall be flat. Flange gaskets should be complete rings with no joint rubber seal.

3, the thickness of the steel plate of the main project ventilation duct and accessories should meet the design requirements. When the design does not specifically require it. The thickness of the steel plate should be greater than 0.75mm.

4. The engineering pressure measuring pipe is provided with a downward elbow at one end of the airtight protection door, and the other end is located in the ventilation chamber or control room, and a ball valve is installed. The manometer interface through the gas channel shall be welded.

5. The measuring hole of the ventilation pipe and the clean sampling pipe should be made at the same time as the ventilation pipe. The measuring hole and eluent sampling tube should be blocked.

6. The direction of air flow in the ventilation pipe, the opening and closing direction and opening degree of the valve should be clearly and accurately marked.

Exhaust pipe and accessories installation

Air conditioning duct

1, the smoke pipe should be steel pipe or cast iron pipe. When using welded steel pipes, the wall thickness should be greater than 3mm; Pipe joints should be welded. When the flange is connected, the surface of the flange should be flat, and there should be a sealed groove; Heat-resistant rubber pads should be added between flanges.

2. The cast iron exhaust pipe buried in the concrete should be connected with the flange.

3. The exhaust pipe should be equipped with a thermal expansion compensator along the shaft. The unidirectional telescopic joints should be concentric with the front and rear smoke pipes. The connection between the exhaust pipe and the exhaust pipe of the diesel engine should have a buffer facility.

4. The installation of the exhaust pipe shall meet the following requirements:

(1) The slope of the eldest son should be 0.5, and the water valve should be set at the low point;

(2) The cleaning hole baffle should have a heat-resistant pad and should be firmly fixed;

(3) When the exhaust pipe passes through the partition wall, the gap around it should be filled with asbestos rope;

(4) The connection between the smoke exhaust pipe and the smoke exhaust pipe shall be embedded with a sealed short pipe, which shall pass through the wall, and shall be provided with a flange and a closed wing ring.

(5) The ground outlet of the smoke exhaust pipe should be provided with a rain cap, and measures should be taken to prevent the smoke exhaust pipe from being blocked at 150200mm from the ground.

Equipment installation project acceptance

Ventilation system testing should meet the following requirements:

1. Air tightness test The air tightness test is to seal the pipeline and close the valve, the inflation pressure is 5.06×104Pa, and the sealing is 5 minutes.

2. The air tightness test of the filter absorption tower shows that the pressure drop value within 5 minutes after the pressure is 1.06×104Pa is not more than 660Pa;

3. Overpressure test of filter and ventilation works, the overpressure value should be 3050Pa;

4, cleaning, filter, isolation ventilation modes switch between each other. Various ventilation modes of inlet, send to, line, and. Return air volume and pressure meet the design requirements; 5. The temperature and relative humidity of the main equipment room must meet general requirements.

Industrial air conditioning, chemical fiber industrial air conditioning, chemical fiber industry refrigeration ,textile industrial air conditioning , dust-free workshop cooling, ventilation pipeline, cooling tower, freezer and other air conditioning units and accessories.

Jiangsu Jincheng Air Conditioning Engineering Co., Ltd. is a comprehensive manufacturer of special air-conditioning equipment design, production, installation, and commissioning of clean room, electricity, tobacco, civil air defense engineering, medical clean room, clean room, electricity, tobacco, civil air defense engineering, medical clean room. Mainly produce JCZK combined air conditioning unit, cooling tower, glass steel ventilated galvanized sheet pipe, stainless steel pipe, polyurethane ventilation pipe and air conditioning accessories, Jincheng air conditioner is wide, the type, the unique model, superior performance, and user Favused.