The flange is not a high-pressure flange and is applicable to low pressure, such as engineering construction, air conditioning water system, etc. Flange is often referred to as a screw thread product. For example, the pipe fittings on tap water used at home are screw thread. It is often used in engineering construction. It has the advantages of convenient on-site installation, convenient maintenance and no welding. It can be used on pipes that are not allowed to be welded, are not easy to be welded, or have poor weldability. Threaded flange is not a high-pressure flange. Standard threaded flange is a flange with neck. Except that the flange is also different, other sizes of necked flat welding flange and socket welding flange are the same. One end of threaded flange is connected with pipeline thread, and the other end is connected with other flanges, flange covers, equipment, valves, etc.
Flange is a part of shaft to shaft connection, which is used for the connection between pipe ends; It is also used for the connection between two equipment, such as reducer flange. Flange connection or flange connection is a removable connection of flange, gasket and bolt as a group of combined sealing structure. Pipeline flange refers to the flange used for pipeline in pipeline installation, and refers to the inlet and outlet flange when the equipment is used on the equipment.
There are holes in the flange, and the bolts make the two flanges closely connected. Connection mode flange connection is to fix two pipes, pipe fittings or equipment on the flange plate respectively. Add flange gasket between two flange plates and connect them together with bolts to complete the connection. Some pipe fittings and equipment have their own flange plates, which belong to flange connection. Flange connection is an important connection method in pipeline construction. Flange connection is easy to use and can bear large pressure. In industrial pipelines, at home, the pipe diameter is small and low-pressure, and there is no flange connection. If there are flanged pipes and equipment everywhere in the boiler room or production site.
According to the connection mode, flange connection types can be divided into plate flat welding flange, neck butt welding flange, socket welding flange, threaded flange, flange cover, loose flange with neck butt welding ring, slip on ring flange, ring groove face flange and flange cover, large diameter flat flange, large diameter high neck flange, splitting blind plate, loose flange of butt welding ring, etc. Welding quality as iron plate welding flange, many customers question whether the quality of iron plate welding flange is better than forging welding flange.
Flange installation:
To make the installation flange watertight, the installation requirements and problems needing attention are as follows:
1. The flange shall have sufficient strength and shall not be deformed during fastening. The flange sealing surface shall be flat and smooth, and the oil stain and rust spot shall be carefully cleaned during installation.
2, gaskets should have good oil resistance and aging resistance, as well as better elasticity and mechanical strength. Gaskets with different sections and sizes shall be selected according to the joint shape and placed correctly. Stainless steel flange joint.
3. The fastening force of the flange shall be uniform, and the compression of the rubber pad shall be controlled.
Post time: Dec-22-2021