Connection of water supply and drainage pipes in clean room

Connection of water supply and drainage pipes in clean room

Threaded connections are mainly used for water supply pipes with a nominal diameter of no more than 150mm and a nominal pressure of no more than 1.0MPa, and can also be used for saturated steam pipes with a nominal diameter of no more than 50mm and a working pressure of no more than 0.2MPa, and can also be used for threaded pipes Valves and equipment; first according to pipe...

Text label: clean room construction, clean room design, water supply and drainage pipe connection

Connection of water supply and drainage pipes in clean room

Threaded connections are mainly used for water supply pipes with a nominal diameter of no more than 150mm and a nominal pressure of no more than 1.0MPa, and can also be used for saturated steam pipes with a nominal diameter of no more than 50mm and a working pressure of no more than 0.2MPa, and can also be used for threaded pipes Valve parts and equipment; first select the corresponding threaded plate and die according to the pipe diameter, then set the pipe thread on the pipe end and apply packing on the outside of the thread, and then tighten it with a pipe wrench; the steel pipe and plastic pipe in the dust-free pharmaceutical cleanroom can be threaded Connection, when the steel pipe is connected by thread, various pipe fittings are used for its extension, branch, turn and diameter reduction. , pipe blockage, etc.

In pipeline engineering, the commonly used welding tool is electric electrode manual arc welding. During welding, the corrugated thickness and thickness of the welding seam are required to be uniform. The reinforcement surface meets the strength requirements, and there are no cracks, pores and slag inclusions. Residues, arc craters and obvious welding flashes should be checked for tightness and strength after welding. The advantages of welding are that the joints are tight, watertight, fast in construction, and no accessories are required. The disadvantage is that it cannot be disassembled, and welding can only be used for non- Galvanized steel. Gas welding is a process of melting the joints of the two parts of the metal to be welded by means of the heat generated by gas combustion, so that they are connected as a whole. When the wall thickness of the steel pipe is less than 3.5mm, it is suitable for gas welding; plastic welding can be divided into hot air Welding and hot-melt pressure welding, its welding joints are in the form of socket, sleeve and butt, suitable for the connection of various plastic pipes. Zhongjing Global Purification can provide consulting, planning, design, construction, installation, transformation and other supporting services for clean rooms and clean rooms.

Flange connection is often used on pipes with larger diameters, and the flange is often welded to the end of the pipe and then fixed with bolts. Flange connection is characterized by easy disassembly, good tightness, high strength, and many consumables. , High cost, mainly suitable for steel pipes, cast iron pipes, plastic pipes and other pipes. Plastic bonding is the effect of the adhesive force on the surfaces of the two objects to be glued, and the two objects of the same or different materials are firmly bonded together. Compared with flange connection and welding High shear strength, uniform stress distribution, can bond any different materials, easy construction and low price. The cast iron pipes for indoor drainage are connected by sockets and sockets through various pipe fittings. The cast iron fittings used in the indoor drainage system are of fixed size and cannot be arbitrarily cut and bent. The pipes need to be arranged, cut and installed according to the combined size of the fittings. Plastic pipes can be bonded. For pipes with a nominal diameter of less than 200mm, socket bonding is often used. This connection method has good bonding strength and high compressive strength. The bonding of pipes should not be carried out in a high humidity environment. It should be kept away from the fire source, avoid impact and direct sunlight, and do not operate in an environment below -20 °C; before applying the adhesive, the adhesive surface should be brushed and wiped clean, and then the adhesive should be brushed evenly along the axial direction. , Gently insert the pipe into the socket, straighten it and squeeze it, wipe off the excess glue, and let it solidify.

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