An automatic locking device for three-piece clamp flange

Abstract

The invention provides an automatic locking device for a three-piece clamp flange. The three-piece clamp flange includes a left clamp, a right clamp and a bottom clamp. The end shaft connection also includes: the outer frame reaction frame, which is a rectangular frame, and is set on the periphery of the three-piece clamp flange; there are two clamping cylinders, and the two ends of one clamping cylinder are respectively connected to the outer frame. The reaction frame is connected with the left hoop, and the two ends of the other clamping cylinder are respectively connected with the outer frame reaction frame and the right hoop; the top tightening cylinder is connected with the outer frame reaction frame and the bottom hoop respectively; lock nut , used to fix the contact ends of the left and right hoops after they are closed. On the basis of the traditional three-piece clamp flange completely relying on manual opening and closing and locking, the present invention adds an outer frame reaction frame, clamping oil cylinder, and top tightening oil cylinder to realize the entire automatic opening and closing locking, greatly improving The working efficiency of opening and closing and locking is improved, and the labor force is liberated. The degree of security protection can be increased by using the 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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