MECHANISM FOR DRAWING METALLIC PIPE INTO FLAMEPROOF ENCLOSURE IN EXPLOSIONPROOF FREEZING-REFRIGERATING DEVICE

摘要

PROBLEM TO BE SOLVED: To prevent the occurrence of running-away of flame through the passage in a metallic pipe even in the case where the metallic pipe breaks, in a mechanism of drawing the metallic pipe into a flameproof enclosure in an explosionproof freezing- refrigerating device. ;SOLUTION: This mechanism has a structure of drawing metallic pipes 13b, 14b, and 15e into the flameproof enclosure 3 in an explosionproof freezing-refrigerating device which is so arranged as to draw the metallic pipes for detection of temperature and pressure forming a various kinds of apparatuses into the container 3, comprising a freezer-refrigerator and a freezer unit equipped with a compressor, a condenser, a flameproof enclosure 3 having various kinds of apparatuses for generating electric spark or arc. In this case, the drawing mechanism comprises a hollow sheath pipe 27 which is inserted airtightly into the through hole 3c in the wall face of the enclosure 3 and in which metallic pipes 13b, 14b, and 15e are connected with the sidewalls on both sides in communication state with the inner space, and a columnar body 28 forming space Go to the sheath pipe 27, and the size of the space Go is made in a dimension to prevent running-away of flame and it has a sectional area more than the area where a variable kinds of apparatuses can operate.;COPYRIGHT: (C)1999,JPO