FIELD: coke industry; devices and the systems for throttling of the lower cover of the coking drums.
SUBSTANCE: the invention is pertaining to the field of coke industry, in particular, to the device and the system for usage of the casing in the shutoff valve connected with the coking drum. The system contains the casing (20) and the block of the gate seal (32), which with possibility of sliding abuts to the slide valve (64) for prevention of the vapor permeation through the seal. The block of the gate seal (32) contains the gate seal, which loosely moves inside the guiding cylinder for reduction of the amount of the vapor at relocation of the slide valve (64) between the "open" and "closed" positions, and the loading spring for creation of the force on the gate seal, preventing the leakage of the vapor through this gate seal. The slide valve (64) contains the hole, through which the abrasive materials are passing, and the changeable ring made out of the abrasive resistant material. At that the ring is attached to the slide valve (64) on its lower side. The invention is safe and effectively cuts the coking drum after formation of the coke and other by-products.
EFFECT: the invention is safe and effectively cuts the coking drum after formation of the coke and other by-products.
15 cl, 5 dwg
