CN101809419A

CN101809419A - Be used to have the distribution lid that rotation distributes the membrane type gasometer that drives

Info

Publication number: CN101809419A
Application number: CN200880108711A
Authority: CN
Inventors: J-L·尚普尼; J·蒂斯朗
Original assignee: Itron France SAS
Current assignee: Itron France SAS
Priority date: 2007-09-25
Filing date: 2008-09-09
Publication date: 2010-08-18
Anticipated expiration: 2028-09-09
Also published as: AR068261A1; RU2010116281A; FR2921486A1; FR2921486B1; CN101809419B; WO2009044069A3; CL2008002851A1; BRPI0817988A2; RU2468339C2; BRPI0817988A8; WO2009044069A2

Abstract

The present invention relates to a kind of gasometer, this gasometer comprises a plurality of measuring chambers and a rotation distribution plate (2), described rotation distribution plate (2) is mounted on the upper surface that distributes lid (1) around fixing rotation rotation, described distribution lid has a plurality of openings (10-12), each opening is connected with a measuring chamber, in the process that distribution plate (2) rotates around described axis, it makes gas alternately enter measuring chamber and discharges from measuring chamber, this distribution lid (1) have at least two with the concentric sealing ring (15a of axis that fixes, 15b), the surface in contact of distribution plate (25,26) slides on the flat coboundary of sealing ring.According to the present invention, the flat coboundary (15d) of at least one in the sealing ring has the non-circular shape of qualification, turns around so that whenever revolve, and all points on the surface in contact of this non-circular flat coboundary have at least once not and this edge contact.Advantage is the removing that promotes pollutant.

Description

Be used to have the distribution lid that rotation distributes the membrane type gasometer that drives

Technical field

The present invention relates to have the field of the gasometer of deformable film, described gasometer comprises a plurality of measuring chambers and a distribution member or divider, described distribution member or divider are mounted on the upper surface that distributes lid or box around fixing rotation rotation, in described distribution lid or box, be provided with a plurality of openings, each opening is connected with a measuring chamber, and this distribution member is making gas can alternately enter and leave measuring chamber when rotation rotates.

Background technology

Distribution member by actuator drives and with the rotation of the synchronized movement of diaphragm ground, described gearing comprises that a plurality of bars and are called the member of crank.During diaphragm replaced translation motion, described bar changed these motions into crank rotatablely move.Crank is passed to its one side that rotatablely moves distribution member and is passed to series of gears on the other hand then, and described gear drives volume/amount totalizer then.

Especially, rotate the principle of work of distributing the membrane type gasometer that drives referring to document EP 0,128 838 to understand this having.

Hereinafter, distribution member or divider have more particularly correlativity with cooperating of distribution lid or box.

Fig. 1 a to 1c illustrates employed distributor disk in the gauge that the registered trademark of being sold by the applicant is GALLUS 2000.More particularly, Fig. 1 a is the distributor disk 1 that fits together and the skeleton view of divider 2, and Fig. 1 b is the top view of independent distributor disk 1, and Fig. 1 c is the backplan of independent divider 2.

As especially can seeing from Fig. 1 a and 1b, distribute lid or box 1 to comprise the first outer toroid 15a that limits four outer openings 10 to 13, each opening has quadrant shape, and described four outer openings distribute with one heart and are separated by radial seal band 14.Each opening 10 to 13 is suitable for being connected to allow gas to enter described measuring chamber with the corresponding measuring chamber of gauge.Distribute lid or box 1 also to comprise but the second annulus 15b that diameter is less with the first ring 15a is concentric.This second annulus utilizes other three radial strips 16 to define other three openings so that be connected with exhaust with the passage of gauge.At last, the three interior annulus 15c concentric with aforementioned two rings defines central opening 17, and the center of described central opening is on fixing rotation, and being used to hold especially, the maincenter (not shown) of crank rotates around this rotation to drive divider 2.

As especially can be from seeing Fig. 1 a and the 1c, distribution member or divider 2 comprise fan-shaped part, and described scallop branch is arranged to form aperture 20 and the dome area of being opened in 22,23 minutes by two flat zones 21, the angle that each flat zone is all corresponding about 90 °.Divider 2 also comprises uncovered middle section 24, and this middle section forms support, and described support covers 1 central opening 17 and is provided with one heart facing to distributing.During fixing complete the rotating a circle of rotation, the aperture 20 that is limited by divider 2 makes each opening 10 to 13 be connected with measuring chamber in succession and enters with permission gas at divider.The dome area 21 and the uncovered middle section 24 that define the inner space are communicated with measuring chamber in succession with outlet.Remaining opening is sealed in described two

flat zones

22,23 in succession.

Therefore, when work, divider 2-more precisely respectively with three

concentric surface

25,26 of distributing flat coboundary cover 1 first, second and the

3rd ring

15a, 15b, 15c contact and 27-around this axis of fixing rotation so that on the surface of this lid-more precisely on the coboundary at each ring-slip.

Should be noted that inner seal ring 15c is essential, because rotating driveshaft passes this divider under the situation of the gauge of selling with trade mark GALLUS 2000.There is for example other scheme described in the document FR 2 778981, wherein do not have axle to pass divider, the result, lid can only comprise two

ring

15a and 15b.

With regard to all situations, the sealing between divider 2 and the lid 1 is by only the weight of divider 2 and the difference between the air pressure inside and outside the divider realize.Be the accurate measurement of the employed gas volume that obtains good sealing and obtain thus, must make with divider and the contacted surface of lid smooth as far as possible.Now, the gas distributor network may be contaminated thing pollute, for example from being present in ethylene glycol type oil-containing material in the gas distributor or particle-for example the come from iron filling material of pipeline.These pollutant major sedimentary have increased divider thus and have covered the friction factor of rotation on surface in contact.This has reduced the measuring accuracy of gauge.

Summary of the invention

The objective of the invention is to propose a kind of distribution lid with special geometric configuration that can reduce above defective.

For this reason, the present invention includes a kind of membrane type gasometer (gas meter, flow meter) that rotation distributes and drives that has, this gasometer comprises divider (distributing slide valve, tiroir de distribution) and a plurality of measuring chamber, described divider is mounted on the upper surface that distributes lid around fixing rotation rotation, in this distribution lid, be provided with a plurality of openings, each opening connects (related with a measuring chamber, be communicated with), when divider during around the rotation of this rotation, this divider alternately allows gas (combustion gas, coal gas) enter measuring chamber and discharge from this measuring chamber, this distribution lid comprises at least two sealing rings, described sealing ring is concentric about this fixing rotation basically, the surface in contact of this divider slides on the flat coboundary of described sealing ring, it is characterized in that, the flat coboundary of at least one in the sealing ring has the non-circular shape of qualification, this non-circular shape makes in revolving the process that turns around, and any point on the surface in contact of this non-circular flat coboundary has at least once and do not contact with this flat coboundary.

The ring outer shroud of diameter maximum preferably with coboundary of non-circular-for example oval-shaped-Ping.But, non-circular shape can be used to distribute all rings of lid.

Thereby it is circular with being shaped as of wherein first, second and the

3rd ring

15a, 15b and 15c and accurately compare corresponding to the distribution lid of the prior art of the rotational trajectory of the surface in contact on the

divider

25,26,27, according to the present invention, make divider is complete rotate a circle during, have at least once not and this loop contacts towards any point of the surface in contact of non-annulus, this helps removing any pollutant that may introduce along with divider.

Description of drawings

Explanation according to a non-restrictive example of the distribution that provides with reference to the accompanying drawings lid will be better understood the present invention, wherein:

Fig. 1 a is the divider that fits together and the skeleton view that distributes lid that is used for the gasometer of prior art;

Fig. 1 b is the top view that the distribution of the gasometer of prior art is covered;

Fig. 1 c is the backplan of divider of the gasometer of prior art;

Fig. 2 a is the top perspective of a nonrestrictive example of distribution lid of the present invention;

Fig. 2 b is the top view of the distribution lid of Fig. 2 a.

Embodiment

Fig. 1 a to 1c above has been described.For the purpose of concise and to the point, the identical Reference numeral of element use that the present invention is total with prior art.

The divider 1 of the non-limiting example of the present invention shown in Fig. 2 a and the 2b only has two rings: first outside ring 15a and the second concentric ring 15b, the diameter of this second ring is less than the first ring 15a.Therefore, it will be with mode and the assembling of divider (not shown) that does not have axle therefrom to pass.Seen at these two figure, according to the present invention, ring 15a has oval-shaped flat coboundary 15d.In this embodiment, Nei Bu ring 15b has the flat coboundary that its shape still keeps circle.But, non-circular shape-for example oval-also can be used for the ring of this inside.

Because this special shape, in the process of fixing rotation by circular rotation, any point on the corresponding surface in contact of divider will have and partly not contact with two of coboundary 15d for twice at divider.(surface level, highly) thereby pollutant will be subjected to the influence of gas flow and be eliminated may to be present in this aspect.

Obviously, it is contemplated that other shape, as long as their not strict circular trace corresponding to the corresponding surface in contact on the divider.Certainly, no matter how the number that covers the ring of use in distribution can use the present invention, when lid be used for a divider that has axle therefrom to pass-as shown in Fig. 1 a and 1c-when cooperating, the number of ring is generally two; Perhaps when lid cooperated with the divider that does not have axle therefrom to pass, the number of ring was generally three.

Claims

1. have rotation and distribute the membrane type gasometer that drives, this gasometer comprises divider (2) and a plurality of measuring chamber, described divider (2) is mounted on the upper surface that distributes lid (1) around fixing rotation rotation, in described distribution lid, be provided with a plurality of openings (10-12), each opening is connected with a measuring chamber, when described divider (2) during around the rotation of described rotation, described divider (2) makes gas alternately enter described measuring chamber and discharges from described measuring chamber, described distribution lid (1) comprises at least two basically about the described fixing concentric sealing ring (15a of rotation, 15b), the surface in contact (25 of described divider, 26) on the flat coboundary of described sealing ring, slide, it is characterized in that, the flat coboundary (15d) of at least one in the described sealing ring has the non-circular shape of qualification, so that in revolving the process that turns around, any point on the described surface in contact of this non-circular flat coboundary (15d) has at least once and does not contact with this flat coboundary.

2. gasometer according to claim 1 is characterized in that, (15a 15b) has non-circular flat coboundary to two sealing rings.

3. gasometer according to claim 1 and 2 is characterized in that, described flat coboundary is oval-shaped.