EP0483292A1 - Liquid counter - Google Patents
Liquid counterInfo
- Publication number
- EP0483292A1 EP0483292A1 EP19910900236 EP91900236A EP0483292A1 EP 0483292 A1 EP0483292 A1 EP 0483292A1 EP 19910900236 EP19910900236 EP 19910900236 EP 91900236 A EP91900236 A EP 91900236A EP 0483292 A1 EP0483292 A1 EP 0483292A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- bearing body
- measuring
- closure plate
- axis
- opening
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Ceased
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F1/00—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow
- G01F1/05—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects
- G01F1/10—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects using rotating vanes with axial admission
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F1/00—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow
- G01F1/05—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects
- G01F1/10—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects using rotating vanes with axial admission
- G01F1/12—Adjusting, correcting, or compensating means therefor
Definitions
- the invention relates to a liquid meter having a housing with a closed opening, a flush opening aligned therewith and a mounting opening lying transversely thereto, with a measuring wheel arrangement, the axis of rotation of which runs in the direction of flow, and a measuring mechanism driven by the latter, with a first bearing body holding the measuring wheel arrangement, on which a flange is formed, and with a second bearing body facing the inlet opening and fastened to the first bearing body, in which one end of the axis of rotation on the inlet opening side is mounted, the first and second bearing bodies with the measuring wheel arrangement being insertable into the interior of the housing and attached to it Screw the flange to the edge of the mounting opening.
- Liquid meters of this type in which the axis of rotation runs in the direction of flow of the liquid flowing through, are designed, for example, as Woltmann or turbine wheel meters.
- the first bearing body supports the inlet-side end of the axis of rotation, so that the measuring wheel is mounted in the first and second bearing bodies.
- the first bearing body has a cylindrical support ring in the flow area, on the inner surface of which ribs connect, which cross each other
- REPLACEMENT LEAF form with the bearing for the axis of rotation sitting at the crossing point.
- the second, ring-shaped second bearing body which is likewise provided with cross-shaped ribs, is fastened to the support ring, the central axes of the bearing bodies being aligned with one another.
- the rings of both the first and the second bearing body have the same diameter.
- diffuser-like projections are provided within the support ring, which enclose the axis of rotation and thereby form an aerodynamic inner body which is flushed by the liquid flowing through.
- a circumferential lip seal is located on the inlet edge on the end face of the support ring of the second bearing body which, when fitted, bears against a seal seat on the housing.
- the rotational movement is transmitted to the outside through the assembly opening via a transmission shaft which is driven by the measuring wheel via a worm gear.
- a cover plate covering the outside of the bearing body is a measuring mechanism which is driven by the transmission shaft via permanent magnets.
- a control paddle is arranged on the second bearing body, which can be pivoted from the outside about an axis via a gear transmission which runs transversely to the direction of flow. The measuring mechanism is adjusted by means of this control paddle, in which the measuring mechanism influences the flow directly in front of the measuring wheel. After adjusting the display of the measuring mechanism by the control paddle, the control paddle is sealed.
- the known liquid meters are asymmetrical and accordingly the display accuracy depends on the direction of flow. All of these known liquid counters are therefore designed and calculated for only one direction of flow.
- the first bearing body, the measuring wheel, the second bearing body and the transmission arrangement are a preassembled unit which is inserted through the mounting opening and inserted into the interior of the housing in such a way that the lip seal on the second bearing body is free from the sealing surface on the housing and after complete assembly is through
- Such assembly requires a relatively high level of attention, so that the seal is not damaged by improper insertion of the preassembled unit.
- the externally accessible drive of the control paddle is located in a through opening on the flange of the bearing body, so that in this Area an additional seal is required.
- the object of the invention is to provide a liquid counter of the type mentioned, in which the number of seals is reduced and the direction of flow can be chosen as desired with reduced installation effort.
- the measuring wheel arrangement has two identical measuring wheels coupled to one another via a single axis of rotation, that a measuring wheel is arranged and guided on both sides of the first bearing body, and that a further second bearing body is attached to the first bearing body on the outflow side of the measuring wheel arrangement and that the other end of the axis of rotation of the measuring wheel arrangement is supported in the further second bearing body.
- the configuration according to the invention results in a symmetrical arrangement of the first bearing body with the two second bearing bodies and the measuring wheel arrangements located therebetween, the plane of symmetry running approximately centrally between the inlet and outlet openings transversely to the direction of flow, and thus the housing also becomes symmetrical with this center plane.
- the liquid counter can be flowed through in two directions, the measurement results being essentially the same in both directions.
- the entire unit consisting of the measuring wheel arrangement and the two bearing bodies can be inserted vertically through the assembly opening towards the inside, without special attention having to be paid to this insertion process.
- a further embodiment of the invention can be such that a control paddle, which can be rotated about an axis of rotation extending transversely to the direction of flow, is mounted in the two second bearing bodies, which control paddles can be pivoted together by means of a gear arrangement which is accessible from the outside after assembly.
- the axis of rotation for the two measuring wheels is designed in the area between the two measuring wheels as a worm wheel, this worm wheel meshing with a gear wheel attached to a transmission shaft running perpendicularly thereto; the end of the transmission shaft located in the region of the axis of rotation is rotatably mounted in the first bearing body and the other end in a closure plate mounted in an opening in the flange of the first bearing body.
- the transmission shaft for transmitting the rotary movement of the measuring wheels to the outside is located exactly in the central plane of the liquid counter, which runs transversely to the flow direction, even if offset laterally to the central plane, which runs in the flow direction.
- a gear segment is arranged on each of the two control paddles, which is drivingly coupled to the gear teeth which are rotatably mounted in the opening in the opening in the flange of the first bearing body.
- the closure plate has a cylindrical collar formed on it, at the free end of which the gear teeth are arranged.
- an intermediate wheel is mounted on the first bearing body in the region of the closure plate, on the circumference of which recesses are provided, into which the gear teeth engage on the closure plate;
- a cylindrical extension is formed on the idler gear, the outer surface of which is designed as a gearwheel that meshes with the gearwheels of the gear segments.
- control paddles can be driven from the outside via the closure plate by means of a suitable tool, the drive being carried out in such a way that the control paddles are assigned to one another in a position that is symmetrical with respect to the direction of flow.
- This closure plate which is also sealed in the known arrangement by means of a seal with respect to the first bearing body, replaces the additional drive element for the control paddle present in the known liquid meter and accordingly also an additional seal that is attached to the passage of the drive pin or element for the control paddle is to be provided, saved.
- the transmission shaft is gripped by the intermediate gearwheel in the middle and, moreover, the upper end of the transmission shaft is mounted in the bottom of the closure plate and accordingly the control paddles can be easily adjusted via the closure plate when the liquid meter is fully assembled - before installing the actual measuring mechanism with display.
- the measuring mechanism is attached to the housing so that the closure plate is covered, whereby the closure plate is also secured against access by the measuring mechanism.
- the first bearing body is formed with a U-shaped carrier, the carrier ring forming part of the U-shape.
- REPLACEMENT LEAF 1 shows a longitudinal sectional view according to section line II of FIG. 2 through a Woltmann counter
- FIG. 3 is a sectional view along the section line III-III of FIG. 2,
- Fig. 5 is a schematic representation of a
- a Woltmann meter which is designated in its entirety by reference number 10, has a housing 11 with an inlet opening 13 provided with a flange 12 and an outlet opening 15 provided with a flange 14.
- the direction of flow in normal operation is represented by the arrow P.
- the central axes of the inlet opening 13 and the outlet opening 15 are aligned.
- the housing 11 Perpendicular to the central axis running in the flow direction, the housing 11 has a mounting opening 15 located centrally between the inlet and outlet openings.
- first bearing body 17 which has an outer carrier ring 18, on the inner surface of which cross-shaped mutually associated carrier ribs 19 are formed, which end at an inner carrier ring 20 arranged concentrically to the outer carrier ring and thus the inner carrier ring 20 with the outer Connect the carrier ring.
- the paragraph 21 serves as a bearing element for a transmission shaft described in more detail below.
- Bridges 24 and 25 connect tangentially to the outer carrier ring 18, which, together with a partial region of the carrier ring 18, form a U-shape 26, the ribs 24 and 25, as legs of the U-shape, forming an acute angle between them.
- a fastening flange 27 At the free end of the webs 24 and 25 there is a fastening flange 27 with which the first bearing body 17 can be fastened to the mounting opening 16 in a covering manner.
- the fastening flange 27 has an opening 28 which is delimited by a cylindrical collar 29, the free end of the cylindrical collar 29 connecting to the outer carrier ring 18.
- a cylindrical extension 30 of a closure plate 31 engages in the opening 28, which is guided by the cylindrical collar 29, the outer diameter of the closure plate 31 being larger than the outer diameter of the cylindrical extension 30, so that a flange edge 31 is formed which fits into a recess 32 can be used on the flange 27 of the first bearing body.
- the free end of the extension 30 is provided with four pins 34 which are evenly distributed on the circumference and project axially from the edge of the collar.
- a cylinder extension 35 running parallel to it is formed within the cylindrical collar, which surrounds an opening 36, a bearing surface 37 extending radially with respect to the cylinder extension 35 being provided or formed within the cylinder extension 35, some of which is also directly on the outer support ring 18 connects.
- a gear wheel is mounted within the cylinder shoulder, which gear wheel 38 has a central opening 39 and a flange 40 which runs radially with respect to the central axis of the cylinder shoulder 35 or the cylindrical collar 29.
- the flange has a flange 40 four recesses 41 into which the pins 34 of the cylindrical extension 30 of the closure plate 31 engage.
- the toothing of the gear toothed wheel 38 interacts with a toothing 42 or 43 on each tooth segment 44, the tooth segments having a circular segment shape.
- a pin 46 or 47 is formed, which is oriented transversely to the direction of flow and whose function will be described in more detail below.
- a blind hole 48 is formed, in which one end of a transmission shaft 49 is rotatably mounted.
- the transmission shaft 49 thus runs outwards from the central region of the Woltmann counter 10 parallel to the central axis of the mounting opening 16, passes through the opening 36 and the central opening 39 and is mounted in a blind hole 50 on the inner surface of the closure plate 31.
- the transmission shaft 49 is surrounded by a transmission body 51 which carries two permanent magnets 52 lying opposite one another. Instead of two permanent magnets, three or more can also be provided.
- the transmission shaft has a gear wheel 53 which is connected to it in a rotationally fixed manner and which meshes with a worm wheel 54 (see below).
- the Voltmann meter has two impellers 55 and 56 arranged in alignment with one another, which are arranged at a distance from one another, the carrier ribs 19 being located between the two measuring wheels 55 and 56:
- the two measuring wheels have an inner retaining ring 57, in a manner known per se, on which the Connect the wings of the measuring wheels 55 and 56 so that they protrude radially;
- a carrier disk 58 runs radially inside the retaining ring 57 and adjoins the outside of a tubular guide element 59.
- the guide elements 59 of the two measuring wheels each surround pivots 60 and 61 adjoining the worm wheel 54 on both sides, so that the two pivots 60 and 61 as well as the worm wheel 54 located therebetween overall the axis of rotation of the two
- second bearing bodies 62 and 63 adjoin, which have an outer ring 64 and an inner shell ring 65, which shell ring 65, viewed in the axial direction, is closed at one end of the second bearing body 64 and is open at the other end, the
- the outer diameter of the inner ring 65 is enlarged in diameter from one end face or end plane of the second bearing body according to a parabolic curve; the outer diameter of the inner ring 65 on the opposite end plane of the second bearing body 62 or 63 corresponds to the outer diameter of the retaining ring 57 of the measuring wheel 55 or 56, so that when two second bearing bodies 62 and 63 are connected in series on both sides to the first bearing body through the inner rings 65, the Retaining rings 57 and the inner support ring 20 results in a fluidically favorable, practically closed shape which surrounds the support parts of the pivots 60 and 31 and the worm wheel arrangement 54/58.
- the pivots 60 and 61 are rotatably supported in a blind hole 66 and 67 in the inner ring 65 of the two bearing bodies 62 and 63.
- the two pins 46 and 47 engage through a groove 68 and 69 in the outer rings 64 of the two second bearing bodies 62 and 63 and engage at their inner end with a pin 70 and 71, respectively, in a radially extending bore 72 on the inner ring 65 of the two bearing bodies 62 and 63.
- control paddles 73 and 74 are attached, which influence to influence the inflow or outflow of the liquid to the measuring wheels 55 and 56 or away from them.
- control paddle 73 and the control paddle 74 pivot when the locking plate 31 is turned clockwise (arrow direction U) in the arrow direction U1 counterclockwise.
- the flange 27 is screwed against a flange 77 on the housing by means of screw bolts 78 with the interposition of an annular seal 75 which is inserted in an annular groove 76, a cover plate 79 being screwed onto the outside of the flange 27 by means of the screw bolts 78 at the same time.
- the seal 75 is followed by a U-shaped sealing section 80 which surrounds the webs 24 and 25 or the outer carrier ring 18 and, as can be seen in FIG. 1, in one on the outer carrier ring 18 or on the webs 25 and 24 arranged circumferential groove 81 lies.
- the sealing parts 80 and the ring seal 75 are integrally formed with one another.
- the cover plate 79 has in its central region a central recess 82 which engages with a recess 83 in a recess 84 on the outside of the closure plate 31 so that the closure plate 31 is pressed against the flange 27 by means of the cover plate 79.
- the closure plate 31 is fixed and is still accessible through the central recess 82 through the cover plate 79 to the outside or from the outside.
- a circumferential seal 85 is located between the closure plate 31 and the flange 27.
- the central recess 82 has an extension 86 towards the outside, into which a measuring mechanism 87 is inserted.
- the counter without measuring mechanism 87, can be inserted into a liquid line and adjusted by adjusting the control paddles 73 and 74 by rotating the closure plate 31. Then the measuring mechanism 87 is inserted into the extension 86 and fastened therein, with which the Woltmann counter 10 is fully assembled.
- the mounting opening 16 is adapted to the U-shape 26 of the first bearing body 17, so that after the first bearing body has been inserted, the seal 80 bears firmly against an inner bar 89 which runs centrally around the housing 11.
- the acute angle between the two webs 24 and 25 is also formed by the shape of the bar, so that abrasion of the seal on the inside of the housing in the area of the bar 89 is avoided when the first bearing body is inserted together with the seal 80.
- the embodiment according to the invention is therefore a symmetrical embodiment which is symmetrical to a central plane which runs transversely to the direction of flow, so that the Woltmann meter can be installed in a liquid line in both directions.
- the outer ring 64 is connected to the inner ring 65 via ribs 90 which have a cross shape.
- One of the ribs 90 has one of the
- the control paddles which can also be referred to as regulating blades, can be adjusted before the measuring mechanism 87 is put on.
- a tool is provided which has a coil inside, which is excited by the permanent magnets 52, so that it emits pulse-like voltage signals which can be evaluated.
- the tool itself has a display on which the speed or the frequency of the revolution of the counter can be read.
- This tool 100 has a housing 101 in which the coil 102 and a computer 103 evaluating the voltage generated by the coil are inserted, the output signals of which are fed to a display 104.
- Two pins 105 and 106 are provided on the housing 101, which pins engage in recesses 107 and 108 for rotating the closure plate 31.
- This tool which is used to control the regulating blades or control paddles, can be used to adjust the control paddles and thus to change the adjustment. At the same time, it is also possible to read off the speed associated with a specific control position of the control paddle at a given liquid pressure or given liquid speed. With this configuration, calibration can be carried out.
- the measuring mechanism 87 is put on after the calibration process and access to the closure plate is thus blocked.
- the control paddles cannot be actuated from the outside, that is to say by the current inlet or drain opening, since, in contrast to the known embodiment, the gearbox dimensions are designed such that because of the
- the entire insert after installation outside the housing can simply be used perpendicular to the flow axis.
Landscapes
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- General Physics & Mathematics (AREA)
- Measuring Volume Flow (AREA)
Abstract
Un fluidimètre se présentant sous la forme d'un moulinet de Woltmann ou d'un compteur de roue de turbine comporte deux roues de mesure (55, 56) installées en tandem dans le sens d'écoulement et reliées l'une à l'autre, sur lesquelles, des deux côtés, sont disposées des ailettes de régulation (73, 74) pour influer sur l'écoulement vers les roues de mesure (55, 56) et dans le sens contraire de celles-ci. Ces ailettes de régulation sont commandées, par l'intermédiaire d'un mécanisme, au moyen d'une plaque de fermeture (31) disposée centralement sur un corps de palier (17) destiné aux roues de mesure (55, 56), et guidée dans ce dernier. Ainsi le fluidimètre (10) est, dans sa totalité, symétrique à un plan de symétrie s'étendant transversalement au sens d'écoulement, de sorte que d'une part le montage des roues de mesure et d'autre part le réglage du fluidimètre sont simplifiés. En outre, des joints sont également superflus.A fluidimeter in the form of a Woltmann reel or a turbine wheel counter has two measuring wheels (55, 56) installed in tandem in the direction of flow and connected to each other , on which, on both sides, are arranged regulating fins (73, 74) to influence the flow towards and against the measuring wheels (55, 56). These regulation fins are controlled, by means of a mechanism, by means of a closure plate (31) disposed centrally on a bearing body (17) intended for the measuring wheels (55, 56), and guided in this last. Thus the fluidimeter (10) is, in its entirety, symmetrical to a plane of symmetry extending transversely to the direction of flow, so that on the one hand the mounting of the measuring wheels and on the other hand the adjustment of the fluidimeter are simplified. In addition, seals are also superfluous.
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19893931960 DE3931960A1 (en) | 1989-09-25 | 1989-09-25 | LIQUID METER |
DE3931960 | 1989-09-25 |
Publications (1)
Publication Number | Publication Date |
---|---|
EP0483292A1 true EP0483292A1 (en) | 1992-05-06 |
Family
ID=6390138
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP19910900236 Ceased EP0483292A1 (en) | 1989-09-25 | 1990-09-10 | Liquid counter |
Country Status (6)
Country | Link |
---|---|
EP (1) | EP0483292A1 (en) |
DE (1) | DE3931960A1 (en) |
HU (1) | HUT63002A (en) |
PL (1) | PL287028A1 (en) |
WO (1) | WO1991004462A2 (en) |
YU (1) | YU180590A (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3937521C2 (en) * | 1989-11-10 | 1999-07-08 | Abb Kent Messtechnik Gmbh | Holding element for fastening a component in a recess in a wall adapted to it |
DE4445976C2 (en) * | 1994-12-22 | 1998-02-12 | Meinecke Ag H | Woltmann counter |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1149179B (en) * | 1956-03-26 | 1963-05-22 | Frantisek Kral | Adjustable Woltmann flow meter for liquids |
US3053086A (en) * | 1957-02-12 | 1962-09-11 | Granberg Corp | Turbine type meter |
DE1214427B (en) * | 1961-01-26 | 1966-04-14 | Compteurs Comp D | Paddle wheel counter for flowing media |
US3304780A (en) * | 1963-10-25 | 1967-02-21 | Rockwell Mfg Co | Fluid meter |
DE1548907B2 (en) * | 1966-10-01 | 1971-11-11 | Bopp & Reuther Gmbh, 6800 Mannheim | LIQUID METER WITH A MEASURING WHEEL AND A SECOND WHEEL COUPLED WITH IT |
US3604265A (en) * | 1969-03-19 | 1971-09-14 | Neptune Meter Co | Fluid-driven mass flowmeter |
DE2551672A1 (en) * | 1975-11-18 | 1977-06-02 | Joseph B Griffo | Liquid flow rate measuring instrument - with annular housings containing turbine wheels driving pick:up units producing electric signal outputs |
DE2750269A1 (en) * | 1977-11-10 | 1979-05-17 | Bopp & Reuther Gmbh | Woltmann type flowmeter with simplified regulator - has one-piece impeller unit rotated to vary regulator inlet apertures in inlet support ring and manifold |
FR2515338A1 (en) * | 1981-10-23 | 1983-04-29 | Flonic Sa | IMPROVEMENTS ON WOLTMANN COUNTERS |
DE3732703A1 (en) * | 1987-02-19 | 1988-09-01 | Spanner Pollux Gmbh | Compound water meter |
-
1989
- 1989-09-25 DE DE19893931960 patent/DE3931960A1/en not_active Withdrawn
-
1990
- 1990-09-10 WO PCT/EP1990/001527 patent/WO1991004462A2/en not_active Application Discontinuation
- 1990-09-10 HU HU912114A patent/HUT63002A/en unknown
- 1990-09-10 EP EP19910900236 patent/EP0483292A1/en not_active Ceased
- 1990-09-24 PL PL28702890A patent/PL287028A1/en unknown
- 1990-09-24 YU YU180590A patent/YU180590A/en unknown
Non-Patent Citations (1)
Title |
---|
See references of WO9104462A2 * |
Also Published As
Publication number | Publication date |
---|---|
DE3931960A1 (en) | 1991-04-04 |
PL287028A1 (en) | 1992-02-24 |
HU912114D0 (en) | 1992-08-28 |
WO1991004462A3 (en) | 1991-05-16 |
HUT63002A (en) | 1993-06-28 |
YU180590A (en) | 1992-07-20 |
WO1991004462A2 (en) | 1991-04-04 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
17P | Request for examination filed |
Effective date: 19920229 |
|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AT BE CH DE DK ES FR GB IT LI LU NL SE |
|
RAP1 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: BOPP & REUTHER WASSERZAEHLER GMBH |
|
RAP3 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: ABB KENT MESSTECHNIK GMBH |
|
17Q | First examination report despatched |
Effective date: 19940725 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION HAS BEEN REFUSED |
|
18R | Application refused |
Effective date: 19950223 |