Automatic locking device for three-piece type hoop flange

Abstract

The invention provides an automatic locking device for a three-piece type clamp flange. The three-piece type clamp flange comprises a left hoop, a right hoop and a bottom hoop; one end of the left hoop and one end of the right hoop are respectively connected with two end shafts of the bottom hoop; and the automatic locking device for the three-piece type clamp flange further comprises an outer frame reaction frame, clamping oil cylinders, a jacking oil cylinder and a locking nut, wherein the outer frame reaction frame is a rectangular frame and sleeves the periphery of the three-piece type clamp flange; the number of the clamping oil cylinders is two, the two ends of one clamping oil cylinder are connected with the outer frame reaction frame and the left hoop respectively, and the two endsof the other clamping oil cylinder are connected with the outer frame reaction frame and the right hoop respectively; two ends of the jacking oil cylinder are respectively connected with the outer frame reaction frame and the bottom hoop; and the locking nut is used for fixing the contact ends of the left hoop and the right hoop after the left hoop and the right hoop are folded. According to theautomatic locking device for the three-piece type clamp flange, on the basis that a traditional three-piece type clamp flange is opened, closed and locked completely through manual work, the outer frame reaction frame, the clamping oil cylinders and the jacking oil cylinder are additionally arranged, so that the whole full-automatic opening, closing and locking are achieved, the working efficiencyof opening, closing and locking is greatly improved, and labor force is liberated. And the safety protection degree can be improved by utilizing a locking bolt.

Description

technical field [0001] The invention relates to the field of nozzle sealing of pressure vessels, in particular to a device capable of quickly realizing automatic locking of a three-piece clamp flange through mechanical power. Background technique [0002] There are two ways to connect the end cover of a common pressure vessel (hereinafter referred to as the pressure cylinder) to the cylinder body, one is a bolt connection, and the other is a three-piece clamp flange connection. As the size and pressure level of the pressure cylinder continue to increase, the material cost and labor invested in the reliability and operability of the bolted connection are too large, and the opening and closing efficiency is extremely low, so it is gradually eliminated. [0003] The three-piece clamp flange is selected as the connection method between the end cover and the cylinder body of the large-size high-pressure pressure cylinder, which is more rapid, safe and operable. The three-piece c...

AI Technical Summary

Problems solved by technology

The three-piece clamp flange is generally welded with hinge bolts on the top of the left and right two pieces of clamp flanges, and the three-piece clamp flange is locked by manual tightening of the hinge bolts. The locking gap between the end cover of the cylinder and the flange of the cylinder body is very small, and it takes a lot of manpower and time to complete the snap-in and locking, which leads to the inability to fully reflect the opening and closing efficiency of the pressure cylinder end cover

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