EXPLOSION RELIEVING VALVE FOR THE APPARATUS TESTING AN OBJECT IN THE EXPLOSIVE ATMOSPHERE

摘要

An explosion relieving valve for an apparatus testing an object in an explosive atmosphere is provided to maintain a pressure circumstance of the explosive atmospheric testing apparatus, and to release the inner pressure of the apparatus when the object is exploded. An explosion relieving valve(1a) for an apparatus testing an object in the explosive atmosphere includes a first cylinder(10) having an end communicated with the explosive atmospheric testing apparatus, a valve flange sealed by an opposite end of the first cylinder and having an opening formed at the center thereof, and a valve pin(30) inserted into the opening of the valve flange or separated from the opening due to a pressure difference between the inside and the outside of the explosive atmospheric testing apparatus to intersect or communicate the explosive atmospheric testing apparatus from the atmosphere. The valve flange has a slope obliquely formed at the inner circumference of the valve flange from the first cylinder and a linear part vertically extending from the slope. The valve pin has a cross-section gradually decreased as goes to the first cylinder, and has a cone shape sealed by the slope.