| 摘要 |
<p>711,516. Pressure-relieving devices for fluids. DISTILLERS CO., Ltd. Jan. 7, 1953 [Feb. 1, 1952], No. 2674/52. Class 135 A domed, frangible diaphragm 1 for relieving excessive pressure in a space 5 has a correspondingly domed member 2 for supporting the diaphragm against vacuum in the space 5, the support having perforations so disposed as tc form lines of potential rupture along which it will burst at a pressure less than that at which the diaphragm is designed to fail. As shown the lines of potential rupture are formed by diametrically disposed perforations 12, Fig. 5. whilst additional, peripheral perforations 13 or grooves &c. enable the support when ruptured to fold back under the influence of escaping fluid tc provide a free passage. An alternative form has only two instead of three diametrical lines of perforations, whilst in a further embodiment the line of potential rupture is defined by circumferentially placed slits extending most of the way round the support. The diaphragm and support, which may be attached to each other, may both be situated on the same side of a clamping ring 3, as shown, or on opposite sides, in which case the support is stepped to bring its domed part into contact with the diaphragm.</p> |
