In the production field, Titanium Flange blind is usually composed of cylinder flange, head cover, clamp, sealing ring, opening and closing mechanism, safety interlocking mechanism, rotating arm and short section and other parts, is used in the pressure pipeline or pressure vessel on the circular openings, can realize the rapid opening and closing of a mechanical device. This flange blind device is widely used in petroleum, natural gas long-distance pipeline and gas gathering station, chemical industry, metallurgy, medical and other industries in the pipe cleaner receiving tube, separator, filter and other high-pressure and need to often irregularly open and close the pressure vessel equipment.
The following is to introduce you to the flange blind in the use and maintenance of the attention of the essentials.
Blind plate to isolate, cut off the role, and head, pipe cap, welded plug plays the same role. Because of its good sealing performance, for the need to completely isolate the system, generally as a reliable means of isolation. Blind plate is a solid circle with a handle, for the usual conditions in the isolation of the system. The flange blind, shaped like a figure of eight, one end of the blind, the other end of the throttle ring, but the diameter of the pipe and the pipe diameter is the same, and does not throttle. Flange blind, easy to use, need to isolate, use the blind end, need to operate normally, use the throttle ring end, but also can be used to fill the pipeline blind installation gap. Another feature is obvious marking, easy to identify the installation status.
Flange blind usually in need of emergency cut off position for use, in the process of using and two single piece for combined use, usually in the pipeline for the installation of two single piece, and another single piece to put up, in the need to use when used in conjunction with the use.
Flange blind performance characteristics: non-rigid connection, can be disassembled, tensile strength. Flange connection is usually used as a connection that can be disassembled on the transportation pipeline. Flange blind With the rapid development of domestic and foreign long-distance pipeline construction, pipeline pressure test has become an essential and very important part of the test pressure before and after the test pressure must be carried out on each section of the pipeline through the ball sweeping line, the number of times is generally 4 times or 5 this, especially in the test pressure after the pipe is difficult to clean up the storage of water, the number of times of sweeping will be more. The construction method of repeated welding head is used in the closing and autumn, and its problem, one is to increase the labor intensity of workers, and another is to repeat the line street head consumables are very high, the number of times of needing large-scale equipment is many, and the cost is also high.
Flange blind usually in DN50 above the pipeline for use, the main cloud cause is in the large diameter pipeline, between two pieces of flange insert a piece of flange blind is more difficult, so in the position of the gap to reserve a certain amount of space, so in the installation of the time are used with a ring at the end of the space to occupy.
