Volumetric liquid meter
AssigneeActaris S.A.S.
InventorsLaurent Demia, Christian Turplin, Jerome Manigand
Life of this patent
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Abstract
A reciprocating-piston type meter for measuring liquid volume comprises a meter body 2 having a measuring chamber disposed therein. In a space 11 existing between the meter body 2 and the measuring chamber 7, the meter has means 13 for creating a swirling stream of liquid and means 14 for confining particles present in the liquid.
Claims17
1/ A reciprocating-piston type meter for measuring liquid volume, the meter comprising a body (2) in which a measuring chamber is disposed, said meter being characterized in that it further comprises means for creating a swirling stream of liquid and means for confining particles present in the liquid, said means being provided in a space (11) existing between the meter body (2) and the measuring chamber (7).
2/ A meter according to claim 1, in which the means for creating a swirling stream of liquid comprise a wall (13) suitable for directing the particles present in the liquid from an inlet opening (4) of the meter body (2) towards the confinement means (14;
- 15;
- 15a, 15b, 15c).
3/ A meter according to claim 1, in which the means for confining the particles present in the liquid are constituted by at least one wall end (14) forming at least one particle trapping zone (15;
- 15a, 15b, 15c).
4/ A meter according to any preceding claim, in which the means for creating a swirling stream of liquid and the means for confining particles are constituted by a common wall (13, 14) presenting a portion in the form of a spiral.
5/ A meter according to any one of claims 1 to 3, in which the means for creating a swirling stream of liquid and the means for confining particles are constituted by a common wall (13, 14) presenting a portion in the form of a circular arc.
6/ A meter according to claim 2 or claim 3, in which a wall portion (13) is substantially rectilinear and the wall end (14) presents a portion in the form of a spiral.
7/ A meter according to claim 2 or claim 3, in which a wall portion (13) is substantially rectilinear and the wall end (14) presents a portion in the form of a circular arc.
8/ A meter according to any one of claims 1 to 3, in which the means for creating a swirling stream of liquid and the means for confining particles comprise a two-limb deflector (20) fixed to one end of a substantially rectilinear first wall portion (21), a curved second wall portion (22) being fixed to the other end of the substantially rectilinear first wall portion so as to define a particle trapping zone (15) in the space that extend between the first and second wall portions.
9/ A liquid meter according to any one of claims 1 to 3, in which the means for creating a swirling stream of liquid and the means for confining particles comprise two walls (16, 17) having their ends connected together so as to form a V-shape and defining a particle trapping zone (15) in the vicinity of the end of the V-shape.
10/ A meter according to claim 9, in which a wall end (18, 19) presenting a portion in the form of a spiral turned towards the inside of the V-shape extend at least one of the two walls (16, 17) in such a manner as to define at least one additional trapping zone (15a, 15b).
11/ A meter according to claim 9, in which a wall end (18, 19) presenting a portion in the form of a circular arc turned towards the inside of the V-shape extend at least one of the two walls (16, 17) in such a manner as to define at least one additional trapping zone (15a, 15b).
12/ A meter according to any preceding claim, in which a main filter (12) is provided between the inlet port (8) to the measuring chamber and the means for creating a swirling stream of liquid together with the means for confining particles (13, 14).
13/ A meter according to the preceding claim, in which a portion of the main filter overlying at least one trapping zone (15;
- 15a, 15b)is obstructed in such a manner as to prevent any liquid and particles from being sucked from the space (11) towards the measuring chamber.
14/ A meter according to any preceding claim, in which the confinement means include a secondary filter occupying at least a portion of the particle trapping zone (15;
- 15a, 15b).
15/ A meter according to any preceding claim, in which the means for creating a swirling stream of liquid and the confinement means (13, 14) are connected to the meter body (2).
16/ A meter according to any one of claims 1 to 14, in which the means for creating a swirling stream of liquid and the confinement means (13, 14) are connected to the measuring chamber (7).
17/ A meter according to any one of claims 1 to 14, in which the means for creating a swirling stream of liquid and the confinement means (13, 14) are connected to the first filter (12).