Pressure vessel door quickly-opened device with leakage on-line detection function

Abstract

The invention relates to the field of pressure vessels, and aims to provide a pressure vessel door quickly-opened device with a leakage on-line detection function. The device comprises a barrel flange, a cover flange and a locking clamp, wherein the barrel flange is welded with a vessel barrel, the cover flange is welded with a cover, and the locking clamp is used for fixedly connecting the barrel flange and the cover flange; the flange surface of the barrel flange is provided with three circles of grooves which sequentially include a first sealing groove, a gas detecting groove and a second sealing groove from outside to inside, and a lip-type sealing ring is respectively placed in the first sealing groove and the second sealing groove; and the barrel flange is provided with a gas inlet and a medium sensor, wherein the gas inlet is respectively connected to the first sealing groove and the second sealing groove and used for importing sealing gas, and the medium sensor is communicated to the gas detecting groove. The device disclosed by the invention is convenient to assemble and disassemble, saves the cost, prolongs the service life, and ensures the success rate of vessel sealing; the gas detecting groove can detect the gas leakage of the insides of vessels; and the economic loss caused by suddenly stopping the operation of the vessels can be avoided.

Description

technical field [0001] The invention relates to the field of pressure vessels, in particular to a quick door opening device for pressure vessels with simple assembly, convenient operation, cost reduction, strong sealing performance and online leak detection function. Background technique [0002] Due to the needs of materials in and out of the process, some pressure vessels need a quick-opening device so that the head can be opened and closed quickly. Existing quick-opening devices for pressure vessels mainly have three structures: clamp type, toothed type and compression type, among which the toothed type quick-opening device is the most widely used. The traditional clamp structure mainly includes the cylinder flange welded with the cylinder, the head flange welded with the head and the sealing ring between the two flanges. The cylinder flange and the head flange are evenly distributed in the circumferential direction. For the corresponding flange teeth, by rotating the he...

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Problems solved by technology

Even so, this structure has the following disadvantages: 1. Because the head flange, cylinder flange and both sides of the clamp are toothed, the processing is complicated (the meshing teeth are not allowed to use welding structures), 2. Multiple teeth The structural strength is reduced. In order to ensure the strength, the general structural size is relatively large, which increases the cost

In addition, this type of structural sealing only relies on the compression of the sealing ring during the tightening of the clamp. Once the seal fails, it cannot be detected in time. If there is toxic gas in the container, it will diffuse to the outside of the container in large quantities and cause loss of life and property. If leakage is found, all processes can only be stopped, which will not only delay the progress but also cause economic losses

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