DIFFERENCE PRESSURE RELAY Russian patent published in 2005 - IPC

FIELD: measuring technique and namely in instruments designed for measuring threshold value of pressure difference.

SUBSTANCE: the arrangement is a difference pressure relay which has two hermetically isolated bodies 1 and 2. In the inner cavity of the body 1 there are with possibility to travel a piston 3 with an elastic sealed element 4 fulfilled in the form of an elastic membrane; a ring 5 interactive with the piston and a controlling magnet 6 firmly connected with the piston 3. In the inner cavity of the body 2 there are a magnetically operated sealed contact arrangement 7 interacting with a controlling magnet 6 and an additional magnet 8 fixed in the second body with a regulation gap φ₁ relatively to a sealed magnetically operated contact arrangement 7. In the inner cavity of the body there are an additional piston 18 an additional elastic staled element 19 fulfilled in the form of an elastic membrane, a cross-beam 20 and a magnet 22 firmly connected with an additional piston 18. The additional piston 18 is firmly connected with the piston 3 by means of the cross-beam 20 and centrally symmetric to it relatively to the rotating axis of the cross-beam 20. The ring 5 is a magnet installed with a regulation gap φ₂ relatively to the magnet 22 of the additional piston 18. In the inner cavity of the body 2 there are a locking device 23, the armature 24 of which is interacted with the magnetically operated sealed contact arrangement 7. At that the cross-beam 20 with the pistons 3 and 18, a magnetically operated sealed contact arrangement 7 and an armature 24 of the locking device 23 are balanced, and their rotating axes are reciprocally perpendicular.

EFFECT: creation of difference pressure relay stable to false abrasion under the action of shock acceleration.

2 cl, 2 dwg