DISTRIBUTION COVER FOR THE GAS METER OF THE MEMBRANE TYPE WITH THE ROTARY DISTRIBUTION ACTUATOR

摘要

1. A membrane gas meter with a rotary distribution drive, comprising several measuring chambers and a distributor valve (2) mounted rotatably relative to a fixed axis of rotation on the upper surface of the distribution cover (1), in which several holes (10-12) are made, each of which is connected with one measuring chamber, moreover, this distribution valve (2) allows gas to enter and exit the measuring chambers in the process of rotational movement of the valve the circumference of the axis of rotation, and the distribution cover (1) contains at least two sealing crowns (15a, 15b) located essentially concentrically with respect to the fixed axis of rotation, on the upper flat edge of which the contact surfaces slip (25, 26 ) a spool valve, characterized in that the upper flat edge (15d) of at least one of the sealing crowns has a shape other than round, defined so that any point on the contact surface that is opposite this plane Coy top edge (15d), having a shape other than circular, at least once per one complete revolution provided without mechanical contact with this edge. ! 2. The gas meter according to claim 1, characterized in that the two sealing crowns (15a, 15b) contain an upper flat edge having a shape other than round. ! 3. The gas meter according to any one of the preceding paragraphs, characterized in that the said upper flat edge has the shape of an ellipse.