WO2009047419A2 - Tiroir de distribution pour compteur de gaz a membranes a entrainement de distribution rotatif - Google Patents
Tiroir de distribution pour compteur de gaz a membranes a entrainement de distribution rotatif Download PDFInfo
- Publication number
- WO2009047419A2 WO2009047419A2 PCT/FR2008/051633 FR2008051633W WO2009047419A2 WO 2009047419 A2 WO2009047419 A2 WO 2009047419A2 FR 2008051633 W FR2008051633 W FR 2008051633W WO 2009047419 A2 WO2009047419 A2 WO 2009047419A2
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- distribution
- gas meter
- cover
- contact surface
- drawer
- Prior art date
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F3/00—Measuring the volume flow of fluids or fluent solid material wherein the fluid passes through the meter in successive and more or less isolated quantities, the meter being driven by the flow
- G01F3/02—Measuring the volume flow of fluids or fluent solid material wherein the fluid passes through the meter in successive and more or less isolated quantities, the meter being driven by the flow with measuring chambers which expand or contract during measurement
- G01F3/20—Measuring the volume flow of fluids or fluent solid material wherein the fluid passes through the meter in successive and more or less isolated quantities, the meter being driven by the flow with measuring chambers which expand or contract during measurement having flexible movable walls, e.g. diaphragms, bellows
- G01F3/22—Measuring the volume flow of fluids or fluent solid material wherein the fluid passes through the meter in successive and more or less isolated quantities, the meter being driven by the flow with measuring chambers which expand or contract during measurement having flexible movable walls, e.g. diaphragms, bellows for gases
- G01F3/221—Valves therefor
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F3/00—Measuring the volume flow of fluids or fluent solid material wherein the fluid passes through the meter in successive and more or less isolated quantities, the meter being driven by the flow
- G01F3/02—Measuring the volume flow of fluids or fluent solid material wherein the fluid passes through the meter in successive and more or less isolated quantities, the meter being driven by the flow with measuring chambers which expand or contract during measurement
- G01F3/20—Measuring the volume flow of fluids or fluent solid material wherein the fluid passes through the meter in successive and more or less isolated quantities, the meter being driven by the flow with measuring chambers which expand or contract during measurement having flexible movable walls, e.g. diaphragms, bellows
- G01F3/22—Measuring the volume flow of fluids or fluent solid material wherein the fluid passes through the meter in successive and more or less isolated quantities, the meter being driven by the flow with measuring chambers which expand or contract during measurement having flexible movable walls, e.g. diaphragms, bellows for gases
- G01F3/226—Measuring the volume flow of fluids or fluent solid material wherein the fluid passes through the meter in successive and more or less isolated quantities, the meter being driven by the flow with measuring chambers which expand or contract during measurement having flexible movable walls, e.g. diaphragms, bellows for gases characterised by features of meter body or housing
Definitions
- the present invention relates to the field of gas meters with deformable membranes comprising a plurality of measuring chambers, and a distribution element or spool mounted rotatably about an axis of rotation on the upper surface of a lid or a distribution box. in which are provided several openings which are each connected to a measuring chamber, the distribution element allowing the gas to enter and exit alternately measurement chambers during its rotational movement about the axis of rotation.
- the rotational drive of the dispensing element is performed in synchronism with the movement of the membranes by means of a transmission device comprising a certain number of levers, and a part called crank.
- a transmission device comprising a certain number of levers, and a part called crank.
- the levers transform these translational movements into a rotational movement printed on the crank.
- the crank then transmits its rotational movement on the one hand to the distribution element, and on the other hand, to a series of gears which themselves operate a volume totalizer.
- EP 0128 838 to understand the operating principle of such a rotary distribution drive membrane gas meter.
- FIGS. 1a to 1d illustrate the distribution box and the distribution box used in the meter marketed by the Applicant under the registered trademark GALLUS 2000. More specifically, FIG. 1a illustrates an assembled perspective of a distribution box 1 and of FIG. a distribution drawer 2, FIG. 1b shows a view from above of the distribution box 1 only, FIG. 1c represents a bottom view of the distribution drawer 2 alone, and FIG. 1d represents a partial schematic sectional view of the distribution box 1 assembled with the distribution drawer 2. As can be seen more particularly in FIGS.
- the cover or distribution box 1 comprises a first external circular ring 15a delimiting externally four openings 10 to 13 each having the shape of a quarter of sector of a circle, distributed concentrically and separated by radial sealing strips 14.
- Each opening 10 to 13 is able to communicate with a corresponding measuring chamber of the meter to allow admission of the gas into said measuring chamber.
- the lid or dispensing box 1 also comprises a second circular ring 15b, concentric with the first ring 15a, but of smaller diameter.
- This second circular ring defines, with three other radial bars 16, three other openings intended to be placed in communication with a communication channel of the meter allowing the evacuation of the gas.
- a third internal circular ring 15c concentric with the first two, delimits the central opening 17 centered on the axis of rotation and intended to receive in particular the hub of a crank (not shown) for driving in rotation the distribution drawer 2 around this axis of rotation.
- the distribution element or drawer 2 comprises circular sectors arranged so as to form an orifice 20 and a convex zone 21 separated by two planar zones 22, 23, each zone covering an angle of about 90 °.
- the drawer 2 also comprises a hollow central zone 24 forming a bearing intended to be placed concentrically facing the central opening 17 of the dispensing cover 1.
- the orifice 20 defined by the drawer 2 is intended to successively put each opening 10 to 13 in communication with a measuring chamber for penetrating the gas.
- the convex zone 21 delimiting an interior space and the recessed central zone 24 are intended to put in communication successively the measurement chambers with the exit.
- the two planar zones 22, 23 successively close off the remaining openings.
- the inner sealing ring 15c is made necessary by the fact that the rotational drive shaft passes through the distribution spool.
- the seal between the drawer 2 and the lid 1 is ensured by the sole weight of the drawer 2 and the difference in gas pressure in the drawer and outside thereof.
- the gas distribution networks can be polluted by contaminants originating, for example, from glycol-type fatty agents that may be present in the gas distributors, or particles such as iron filings or soil from pipes.
- the present invention aims to overcome the aforementioned drawbacks including providing a particular geometry distribution drawer.
- the solution according to the present invention is to provide a rotary distribution drive membrane gas meter comprising a plurality of measuring chambers, and a distribution spool mounted rotatably about an axis of rotation on the upper surface of a dispensing cover.
- the distribution valve allowing the gas to enter and exit alternately measurement chambers during its rotational movement about the axis of rotation
- the dispensing cover comprising an outer sealing ring, substantially concentric with respect to the axis of rotation, on the upper plane edge of which slides the external contact surface of the distribution spool forming a sliding interface between the sealing ring external and external contact surface
- the gas meter further comprises a skirt of pro sealingly surrounding the entire periphery of the outer contact surface and having a peripheral wall extending towards the cover so as to cover said slip interface.
- FIG. 1a illustrates an assembled perspective of a dispensing spool and a dispensing cover for a gas meter of the state of the art
- FIG. 1b shows a top view of the metering distribution cover of the state of the art
- - Figure 1c shows a bottom view of the dispenser of the counter of the state of the art
- FIG. 1d is a partial schematic sectional view of a distribution valve assembled with a distribution cover for a gas meter of the state of the art
- FIG. 2 shows a partial schematic sectional view of a distribution valve assembled with a distribution cover for a gas meter according to the present invention
- FIG. 3 represents a diagrammatic perspective bottom view of the dispensing spool as partially shown in FIG. 2.
- Figures 2 and 3 illustrate different views of an embodiment according to the present invention of a gas meter having a dispensing lid 1 and a dispensing drawer 2.
- the dispensing drawer 2 has a protective skirt 30 forming an integral part of the dispensing drawer 2.
- the protective skirt 30 forms with the distribution drawer 2 a single piece.
- the dispensing drawers of the prior art are typically obtained by a method well known to those skilled in the art, such as for example the hot pressing of a thermosetting polymer in a mold of appropriate shape. Once said polymer thermoset (or crosslinked) and after demolding, the distribution drawer 2 is obtained for example identical or similar to that shown in Figures 1a to 1d.
- This additional step consists of honing the distribution drawer 2 at its contact surfaces 25, 26, 27 to obtain the necessary flatness (smooth surface) to a sufficient seal between the distribution cover 1 and the distribution drawer 2. In the embodiment shown in Figures 2 and 3, it is no longer necessary to carry out this additional burn-in step on the distribution drawer 2.
- the distribution drawer 2 together with the protective skirt 30 are obtained by injection-molding a thermoplastic polymer in a mold of appropriate shape.
- the surfaces of the mold intended to be in contact with the contact surfaces 25, 26, 27 of said drawer are deformed so as to obtain, after demolding, a distribution drawer with the necessary flatness. (smooth surface) to a sufficient seal between the distribution cover 1 and the distribution drawer 2.
- the mold is machined by electroerosion prior to the injection-molding step.
- the distribution spool 2 together with the protective skirt 30 are thus made by advantageously avoiding any additional step of lapping.
- the integration of the protective skirt in the distribution drawer ensures that said skirt tightly surrounds all the periphery of the outer contact surface 25 of said drawer.
- An alternative embodiment not shown in accordance with the present invention is to provide not a protection skirt integrated in the drawer, but a protective skirt in the form of an additional piece that is just fixed on the dispensing drawer.
- the protective skirt can be advantageously adapted to the distribution drawers according to the prior art described above, for example identical or similar to those of Figures 1a to 1d.
- dispensing spool according to the embodiment variant not shown can also be obtained by a method of injection-molding a thermoplastic polymer in a previously eroded mold of appropriate shape, as described above.
- the protective skirt is fixed, for example by gluing, wrapping or screwing, around the outer contact surface 25 of the distribution drawer 2 .
- the protective skirt tightly surrounds all the periphery of the external contact surface 25 of the distribution drawer 2, as in the embodiment described in FIGS. 2 and 3.
- the peripheral wall of the protective skirt obtained according to the two embodiments described above, extends towards the cover 1 so as to cover the interface 28 of sliding.
- This peripheral wall is preferably concentric with respect to the axis of rotation, and may be of cylindrical shape (see FIGS. 2 and 3) when it extends parallel to the axis of rotation, or of frustoconical shape.
- the protective skirt thus advantageously makes it possible to limit or even avoid any external contamination at the level of the sliding interface 28.
Landscapes
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- General Physics & Mathematics (AREA)
- Measuring Volume Flow (AREA)
- Sampling And Sample Adjustment (AREA)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
BRPI0817329A BRPI0817329A8 (pt) | 2007-09-25 | 2008-09-12 | Gaveta de distribuição para medidor de gás com membranas de acionamento de distribuição rotativa |
RU2010116289/28A RU2470265C2 (ru) | 2007-09-25 | 2008-09-12 | Распределительный золотник для газового счетчика мембранного типа с вращательным приводом распределения |
CN2008801086411A CN101849166B (zh) | 2007-09-25 | 2008-09-12 | 用于带有旋转分配驱动的膜式气量计的分配器 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR0757817 | 2007-09-25 | ||
FR0757817A FR2921483B1 (fr) | 2007-09-25 | 2007-09-25 | Tiroir de distribution pour compteur de gaz a membranes a entrainement de distribution rotatif. |
Publications (2)
Publication Number | Publication Date |
---|---|
WO2009047419A2 true WO2009047419A2 (fr) | 2009-04-16 |
WO2009047419A3 WO2009047419A3 (fr) | 2009-07-30 |
Family
ID=39271472
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/FR2008/051633 WO2009047419A2 (fr) | 2007-09-25 | 2008-09-12 | Tiroir de distribution pour compteur de gaz a membranes a entrainement de distribution rotatif |
Country Status (7)
Country | Link |
---|---|
CN (1) | CN101849166B (fr) |
AR (1) | AR068258A1 (fr) |
BR (1) | BRPI0817329A8 (fr) |
CL (1) | CL2008002848A1 (fr) |
FR (1) | FR2921483B1 (fr) |
RU (1) | RU2470265C2 (fr) |
WO (1) | WO2009047419A2 (fr) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2952578A1 (fr) * | 2009-11-19 | 2011-05-20 | Itron France | Procede et dispositif pour la fabrication de pieces plastiques a faible defaut de planeite |
FR2955657B1 (fr) * | 2010-01-25 | 2012-08-17 | Itron France | Tiroir de distribution avec deflecteur pour compteur de gaz a membranes |
FR2955656B1 (fr) * | 2010-01-25 | 2012-03-02 | Itron France | Tiroir de distribution pour compteur de gaz a membranes |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US814359A (en) * | 1905-08-18 | 1906-03-06 | Samuel E Crawford | Gas-meter. |
GB511439A (en) * | 1938-02-17 | 1939-08-18 | Alder And Mackay Ltd | Improvements in or relating to valves for gas meters |
US4422324A (en) * | 1981-11-20 | 1983-12-27 | Rockwell International Corporation | Four chamber direct drive gas meter |
EP0128838A2 (fr) * | 1983-06-14 | 1984-12-19 | Schlumberger Industries | Compteur à gaz |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5866824A (en) * | 1997-01-24 | 1999-02-02 | American Meter Company | Gas turbine meter |
FR2778981B1 (fr) * | 1998-05-20 | 2000-08-11 | Schlumberger Ind Sa | Compteur de gaz pourvu de moyens de guidage ameliores |
-
2007
- 2007-09-25 FR FR0757817A patent/FR2921483B1/fr active Active
-
2008
- 2008-09-12 WO PCT/FR2008/051633 patent/WO2009047419A2/fr active Application Filing
- 2008-09-12 BR BRPI0817329A patent/BRPI0817329A8/pt not_active IP Right Cessation
- 2008-09-12 RU RU2010116289/28A patent/RU2470265C2/ru not_active IP Right Cessation
- 2008-09-12 CN CN2008801086411A patent/CN101849166B/zh not_active Expired - Fee Related
- 2008-09-24 AR ARP080104151A patent/AR068258A1/es active IP Right Grant
- 2008-09-25 CL CL2008002848A patent/CL2008002848A1/es unknown
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US814359A (en) * | 1905-08-18 | 1906-03-06 | Samuel E Crawford | Gas-meter. |
GB511439A (en) * | 1938-02-17 | 1939-08-18 | Alder And Mackay Ltd | Improvements in or relating to valves for gas meters |
US4422324A (en) * | 1981-11-20 | 1983-12-27 | Rockwell International Corporation | Four chamber direct drive gas meter |
EP0128838A2 (fr) * | 1983-06-14 | 1984-12-19 | Schlumberger Industries | Compteur à gaz |
Also Published As
Publication number | Publication date |
---|---|
CN101849166A (zh) | 2010-09-29 |
FR2921483A1 (fr) | 2009-03-27 |
WO2009047419A3 (fr) | 2009-07-30 |
RU2470265C2 (ru) | 2012-12-20 |
CL2008002848A1 (es) | 2009-09-11 |
BRPI0817329A8 (pt) | 2015-09-22 |
AR068258A1 (es) | 2009-11-11 |
RU2010116289A (ru) | 2011-11-10 |
BRPI0817329A2 (pt) | 2015-03-24 |
CN101849166B (zh) | 2012-04-18 |
FR2921483B1 (fr) | 2009-10-23 |
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