COOLED GLAND SEAL FOR VESSELS WITH EXPLOSIVE MIXTURE Russian patent published in 2011 - IPC F16J15/18 

FIELD: machine building.

SUBSTANCE: cooled gland seal consists of case with chamber and system of natural circulation of closing fluid. The case of the device is axisymmetrical to shafting and has a press-on bush enveloping shafting and pressing packing elements to a support ring by means of a pin with a nut through a flexible packing ring. Also, the support ring is rigidly tied with the case and is coaxial to the bush. The support ring is positioned in a lower section of the case. A cylinder jacket for supply of cooling fluid via a connecting pipe and nozzle is located axisymmetrical to the case. The nozzle is made in the case. System of natural circulation of closing fluid corresponds to a chamber of end packing, input of which is connected with a heat exchanger, while output - with pneumatic hydro-accumulator via a pressure gauge. The heat exchanger is also connected with the pneumatic hydro-accumulator via shut-off accessories and a filter. The pneumatic hydro-accumulator is connected in turn to a tank with a funnel. The tank is connected to the pneumatic hydro-accumulator through a bypass with shut-off accessories via the pressure gauge.

EFFECT: increased efficiency of process equipment protection from explosions owing to raised reliability of packing shafts of vessels.

2 dwg