A vacuum-protected flange connection

Abstract

The invention relates to the field of flanges, in particular to a vacuum protective flange connector. The vacuum protective flange connector comprises an upper flange, a lower flange, a sealing ring, a connection block and a protecting device, wherein the upper flange is provided with a first annular upper convex edge and a second annular upper convex edge; the lower flange is provided with a first annular lower convex edge and a second annular lower convex edge; the sealing ring is mounted between the upper flange and the lower flange; the protecting device comprises a protecting cover, annular elastic rubber bases located at the upper end and lower end of the protecting cover, and sealing pads; an air suction opening is formed in the side face of the protecting cover; and an air plug is installed in the air suction opening. The vacuum protective flange connector is high in connecting firmness and free from invasion of rain water, dust and the like; and a cavity in the protecting cover is nearly vacuum by pumping air in the protecting cover, so that the electrochemical corrosion to the vacuum protective flange connector is relieved.

Description

technical field [0001] The invention relates to the field of flanges, in particular to a vacuum-protected flange connector. Background technique [0002] Flange is otherwise known as flange flange or flange. Flanges are parts that are connected to each other between pipes and are used for connection between pipe ends; they are also useful for flanges on equipment inlets and outlets, And can be used as connection between two equipments, example reducer flanges. Flange connection or flange joint refers back to the detachable connection of flange, Gasket and bolt as a team of combined sealing structure. Pipe flange refers back to the flange used for piping in the pipeline installation, And used on the equipment refers to the inlet and outlet flange of the equipment. There are holes in the flange, and the bolts tightly connect the two flanges. The flanges are sealed with gaskets. Flanges are divided into threaded (screw connection) flanges, welding flanges and clip flanges. ...

AI Technical Summary

Problems solved by technology

[0003] In the continuous production of modern industry, flanges are affected by medium corrosion, erosion, temperature, pressure, vibration and other factors. Moisture in the air causes electrochemical corrosion at the flange joints and destroys the tightness of the flange joints, which inevitably causes flange leakage

If the flange leakage problem cannot be dealt with in time, the leakage will expand rapidly under the scouring of the medium, resulting in the loss of materials, the destruction of the production environment, and the shutdown of the enterprise, resulting in huge economic losses.

Leakage of toxic, harmful, flammable and explosive media may cause serious accidents such as personnel poisoning, fire and explosion

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