CN1828233A - High voltage-resistant bi-directional elliptic gear flow meter - Google Patents
High voltage-resistant bi-directional elliptic gear flow meter Download PDFInfo
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- CN1828233A CN1828233A CN 200610049716 CN200610049716A CN1828233A CN 1828233 A CN1828233 A CN 1828233A CN 200610049716 CN200610049716 CN 200610049716 CN 200610049716 A CN200610049716 A CN 200610049716A CN 1828233 A CN1828233 A CN 1828233A
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- end cover
- elliptic gear
- resistant
- flow meter
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- 229910000831 Steel Inorganic materials 0.000 claims abstract description 24
- 239000010959 steel Substances 0.000 claims abstract description 24
- 230000001419 dependent effect Effects 0.000 claims abstract description 20
- 239000012530 fluid Substances 0.000 claims description 18
- 125000006850 spacer group Chemical group 0.000 claims description 13
- 238000009826 distribution Methods 0.000 claims description 3
- 239000000696 magnetic material Substances 0.000 claims description 3
- 230000035699 permeability Effects 0.000 claims description 3
- 238000009413 insulation Methods 0.000 abstract 1
- 230000006698 induction Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 230000002457 bidirectional effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 230000001235 sensitizing effect Effects 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
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Abstract
The invention discloses a gear flow meter, which comprises: an anti-high pressure sealed cavity with a top cover, a hollow ring shell, and a bottom cover fixed by bolts, two parallel gear shifts fixed in the cavity and supported in the shift holes of top and bottom covers, two engaged oval gears every with two magnetic steels on the gear shift, two anti-high pressure non-magnetic insulation pieces every with a magneto-dependent sensor on top both welded on bottom ends of the top cover. Wherein, it compares the phase lead and lag of square wave signals from two sensors to decide the flow direction with high precision, stable performance, and large range.
Description
Technical field
The present invention relates to a kind of liquid capacity formula flowmeter, particularly a kind of high voltage-resistant bi-directional elliptic gear flow meter.
Background technology
In commercial production, scientific experiment, energy measurement, communications and transportation and social life etc. and the closely-related field of human development, flow is to need often to measure and the important parameters of control.Characteristics such as oval gear flowmeter is because of measuring accuracy height, oil temperature influence and the pressure loss is little, it is simple to install, stable performance, range ability are big are widely used in industry.Traditional oval flowmeter only can be applied in environment under low pressure, can not satisfy domestic market demand fully.Patent of invention JP2306122 " volumeter " discloses a kind of oval gear flowmeter, its elliptic gear end face is arranged a plurality of magnet steel, adopt Hall element detection rotor rotational displacement signal metered flow, the resolution height, but because the heterogeneity of elliptic gear angular velocity under the constant rate, the recurrence interval of its Hall element output is uneven, measuring accuracy and response speed are not high, its upper end cover of placing Hall element need adopt non-magnet material to make in addition, is not suitable for using under the highly pressurised liquid occasion.
Summary of the invention
In order to overcome above deficiency, the object of the present invention is to provide a kind of high voltage-resistant bi-directional elliptic gear flow meter.
The technical solution adopted for the present invention to solve the technical problems is: upper end cover, centre have the toroidal cavity housing and bottom end cover forms a high pressure resistant closed cavity; Closed cavity has two first, second parallel gear shafts, is supported in respectively in the axis hole corresponding in upper end cover and the bottom end cover, and intermeshing first, second elliptic gear is housed respectively on first, second gear shaft; On end face of first elliptic gear, be that the center becomes 180 ° of layouts with first gear shaft, embed first, second extremely opposite magnet steel of the N utmost point and S respectively; In the upper end cover, having with first gear shaft is first, second aperture that the center becomes 90 ° of distributions, and the spacer of high pressure resistant, a non-magnetic conduction respectively is equipped with in first, second aperture lower end, and one piece of magneto-dependent sensor is respectively arranged in the spacer upper end; Both sides at first, second gear shaft line of centres of bottom end cover have first, second hydraulic fluid port.
When described first, second elliptic gear is permeability magnetic material, outside first, second magnet steel, be with first, second magnet steel cover of non-magnetic conduction respectively again.
The center of described spacer is welded with conducting magnetic column.
Described magneto-dependent sensor adopts the Hall switch integrated device.
The present invention compares with background technology, and the useful effect that has is:
1, uses the magnet steel cover that magnet steel is fixed in the elliptic gear, form the non-magnetic conduction space between magnet steel and the elliptic gear, avoid most of magnetic flux closed in elliptic gear;
2, the residing aperture of magneto-dependent sensor lower end is welded with spacer high pressure resistant, non-magnetic conduction, guarantee the operate as normal of magneto-dependent sensor and the high voltage performance of whole flowmeter, when the spacer middle body is welded with conducting magnetic column, can obviously increase the magnetic induction density of magneto-dependent sensor present position;
3, in an elliptic gear, two pieces of magnet steel are that the center becomes 180 ° of layouts with the gear shaft, and the N utmost point and the S of two pieces of magnet steel are extremely opposite; Under constant rate, the cycle of the square-wave signal of magneto-dependent sensor output is constant, and the frequency of output square wave is directly proportional with fluid flow by flowmeter;
4, two pieces of magneto-dependent sensors are one-tenth 90 ° of layouts in center with the gear shaft, by the leading and hysteresis of phase place that the contrast two sensors is exported square-wave signal, judge fluid flow direction, thereby the realization bidirectional traffics are measured.
The present invention is simple in structure, and good seal performance is easy to process.Therefore, the present invention can be widely used on hydraulic system or the measurement of fluid flow occasion.
Description of drawings
Fig. 1 is a structural principle synoptic diagram of the present invention;
Fig. 2 is a structure explosion synoptic diagram of the present invention;
Fig. 3 is the vertical view of Fig. 1 of the present invention;
Fig. 4 is a kind of structure A enlarged drawing of Fig. 1 of the present invention;
Fig. 5 is the another kind of structure A enlarged drawing (containing conducting magnetic column) of Fig. 1 of the present invention;
Among the figure: 1. bottom end cover, 2. housing, 3. upper end cover, 4. elliptic gear, 5. elliptic gear, 6. gear shaft, 7. gear shaft, 8. magnet steel, 9. magnet steel, 10. magnet steel cover, 11. the magnet steel cover, 12. spacers, 13. magneto-dependent sensors, 14. aperture, 15. apertures, 16. O-ring seals, 17. hydraulic fluid port, 18. hydraulic fluid ports, 19. conducting magnetic columns.
Embodiment
The invention will be further described below in conjunction with drawings and Examples.
Shown in Fig. 1,2,3,4, upper end cover 3, centre have toroidal cavity housing 2 and bottom end cover 1 adds high pressure resistant closed cavity of O-ring seal 16 formation; Closed cavity has two first, second parallel gear shafts 6,7, is supported in respectively in the axis hole corresponding in upper end cover 3 and the bottom end cover 1, and intermeshing first, second elliptic gear 4,5 is housed respectively on first, second gear shaft 6,7; On 4 one end faces of first elliptic gear, be that the center becomes 180 ° of layouts with first gear shaft 6, embed first, second extremely opposite magnet steel 8,9 of the N utmost point and S respectively; In the upper end cover 3, having with first gear shaft 6 is first, second aperture 14,15 that the center becomes 90 ° of distributions, the spacer 12 of high pressure resistant, a non-magnetic conduction respectively is equipped with in first, second aperture 14,15 lower ends, and one piece of magneto-dependent sensor 13 is respectively arranged in spacer 12 upper ends; Both sides at first, second gear shaft 6,7 lines of centres of bottom end cover 1 have first, second hydraulic fluid port 17,18.
When described first, second elliptic gear 4,5 is permeability magnetic material, outside first, second magnet steel 8,9, be with first, second magnet steel cover 10,11 of non-magnetic conduction respectively again.First, second magnet steel cover 10,11 and spacer 12 adopt non-magnetic stainless steel material to make.
As shown in Figure 5, the center of described spacer 12 can be welded with conducting magnetic column 19.Use this structure can obviously strengthen the magnetic induction density of magneto-dependent sensor 13 present positions.
Described magneto-dependent sensor 13 adopts the Hall switch integrated device, if only measure one-way fluid, then only arranges one piece in the upper end cover.Described upper end cover 3, housing 2, bottom end cover 1 adopt the plow-steel material to make.Described housing 2 and bottom end cover 1 or housing 2 and upper end cover 3 can be made of one.
Its principle of work: fluid from the hydraulic fluid port 17 (or hydraulic fluid port 18) of bottom end cover 1 flow into by bottom end cover 1, centre have toroidal cavity housing 2, upper end cover 3 adds the high pressure resistant closed cavity that O-ring seal 16 forms, promoting with separately gear shaft 6,7 is to flow out from another one hydraulic fluid port 18 (or hydraulic fluid port 17) after elliptic gear pair 4,5 engagements at center are rotated.When two on the major axis of the radially oval cross section of one of them elliptic gear and the closed cavity cross section circle center line connectings that intersect circle are vertical, the outside end face of this elliptic gear and closed cavity form the first month shape cavity that a volume size remains constant, this moment another elliptic gear major axis and the closed cavity cross section of oval cross section on two intersect round circle center line connectings and overlap.When elliptic gear rotated a circle, flowmeter was discharged the fluid of 4 times first month shape cavity volume.During the elliptic gear rotation, magnet steel is the sensitizing range of inswept magneto-dependent sensor correspondingly, and magneto-dependent sensor is sensed the variation of permanent magnetic field, changes output signal level.Detect principle as can be known by elliptic gear engagement and magnetic induction, though the angular velocity of elliptic gear changes under the constant rate, but for being contained in two magnet steel on the elliptic gear, changeing 180 ° of one-periods could be to a magneto-dependent sensor generation effect wherein, therefore under constant rate, the cycle of the square-wave signal of magneto-dependent sensor output is constant, and the frequency of output square wave be directly proportional with fluid flow by flowmeter (i.e. the square wave number that can export by the oscilloscope measurement magneto-dependent sensor unit interval or square-wave cycle can obtain fluid flow information); And, detect and judge the flow direction of fluid by contrasting the leading of square-wave signal phase place that two pieces of magneto-dependent sensors export respectively and lagging behind.
Claims (4)
1, a kind of high voltage-resistant bi-directional elliptic gear flow meter is characterized in that: upper end cover (3), centre have toroidal cavity housing (2) and bottom end cover (1) forms a high pressure resistant closed cavity; Closed cavity has two parallel first, second gear shafts (6,7), be supported in respectively in the axis hole corresponding in upper end cover (3) and the bottom end cover (1), intermeshing first, second elliptic gear (4,5) is housed respectively on first, second gear shaft (6,7); On (4) end faces of first elliptic gear, be that the center becomes 180 ° of layouts with first gear shaft (6), embed first, second extremely opposite magnet steel of the N utmost point and S (8,9) respectively; In the upper end cover (3), having with first gear shaft (6) is first, second aperture (14,15) that the center becomes 90 ° of distributions, the spacer (12) of high pressure resistant, a non-magnetic conduction respectively is equipped with in first, second aperture (14,15) lower end, and one piece of magneto-dependent sensor (13) is respectively arranged in spacer (12) upper end; Both sides at first, second gear shaft (6,7) line of centres of bottom end cover (1) have first, second hydraulic fluid port (17,18).
2, a kind of high voltage-resistant bi-directional elliptic gear flow meter according to claim 1, it is characterized in that: when described first, second elliptic gear (4,5) is permeability magnetic material, outside first, second magnet steel (8,9), be with first, second magnet steel cover (10,11) of non-magnetic conduction respectively again.
3, a kind of high voltage-resistant bi-directional elliptic gear flow meter according to claim 1 is characterized in that: the center of described spacer (12) is welded with conducting magnetic column (19).
4, a kind of high voltage-resistant bi-directional elliptic gear flow meter according to claim 1 is characterized in that: described magneto-dependent sensor (13) adopts the Hall switch integrated device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100497166A CN100359294C (en) | 2006-03-06 | 2006-03-06 | High voltage-resistant bi-directional elliptic gear flow meter |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100497166A CN100359294C (en) | 2006-03-06 | 2006-03-06 | High voltage-resistant bi-directional elliptic gear flow meter |
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| CN1828233A true CN1828233A (en) | 2006-09-06 |
| CN100359294C CN100359294C (en) | 2008-01-02 |
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| CNB2006100497166A Expired - Fee Related CN100359294C (en) | 2006-03-06 | 2006-03-06 | High voltage-resistant bi-directional elliptic gear flow meter |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101975599A (en) * | 2010-05-24 | 2011-02-16 | 上海神舟汽车设计开发有限公司 | Four-steel magnet oval gear flowmeter |
| CN102124309A (en) * | 2008-06-20 | 2011-07-13 | 格瑞克明尼苏达有限公司 | Involute gear teeth for fluid metering device |
| CN102914338A (en) * | 2012-11-13 | 2013-02-06 | 浙江大学 | High-pressure resistant two-way cycloid rotameter |
| CN110325248A (en) * | 2017-02-21 | 2019-10-11 | 海德兰泰克股份有限公司 | The method and system of flow in fire hydrant outlet for identification |
| CN110945329A (en) * | 2017-07-25 | 2020-03-31 | 埃科莱布美国股份有限公司 | Fluid flow meter with normalized output |
| US11454526B2 (en) | 2017-07-25 | 2022-09-27 | Ecolab Usa Inc. | Fluid flow meter with linerarization |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2781203B2 (en) * | 1989-05-19 | 1998-07-30 | トキコ株式会社 | Positive flow meter |
| JPH04318426A (en) * | 1991-04-17 | 1992-11-10 | Tokico Ltd | Flowmeter |
| US5553493A (en) * | 1994-03-02 | 1996-09-10 | Graco Inc. | High resolution flowmeter with wear detection |
| CN1104323A (en) * | 1994-04-15 | 1995-06-28 | 中国石化大庆石油化工总厂炼油厂 | High-temp. elliptic gear flow-meter |
| US5992230A (en) * | 1997-11-15 | 1999-11-30 | Hoffer Flow Controls, Inc. | Dual rotor flow meter |
-
2006
- 2006-03-06 CN CNB2006100497166A patent/CN100359294C/en not_active Expired - Fee Related
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102124309A (en) * | 2008-06-20 | 2011-07-13 | 格瑞克明尼苏达有限公司 | Involute gear teeth for fluid metering device |
| US8312785B2 (en) | 2008-06-20 | 2012-11-20 | Graco Minnesota Inc. | Involute gear teeth for fluid metering device |
| CN102124309B (en) * | 2008-06-20 | 2017-04-26 | 固瑞克明尼苏达有限公司 | involute gear teeth for fluid metering device |
| CN101975599A (en) * | 2010-05-24 | 2011-02-16 | 上海神舟汽车设计开发有限公司 | Four-steel magnet oval gear flowmeter |
| WO2011147158A1 (en) * | 2010-05-24 | 2011-12-01 | 上海神舟汽车设计开发有限公司 | Elliptic-gear flow meter with four magnetic steels |
| CN102914338A (en) * | 2012-11-13 | 2013-02-06 | 浙江大学 | High-pressure resistant two-way cycloid rotameter |
| CN102914338B (en) * | 2012-11-13 | 2014-08-13 | 浙江大学 | High-pressure resistant two-way cycloid rotameter |
| CN110325248A (en) * | 2017-02-21 | 2019-10-11 | 海德兰泰克股份有限公司 | The method and system of flow in fire hydrant outlet for identification |
| US11484740B2 (en) | 2017-02-21 | 2022-11-01 | Hydrantech Ltd. | Method and system for identifying flow in hydrant outlet |
| CN110945329A (en) * | 2017-07-25 | 2020-03-31 | 埃科莱布美国股份有限公司 | Fluid flow meter with normalized output |
| CN110945329B (en) * | 2017-07-25 | 2021-08-20 | 埃科莱布美国股份有限公司 | Fluid flow meter with normalized output |
| US11454526B2 (en) | 2017-07-25 | 2022-09-27 | Ecolab Usa Inc. | Fluid flow meter with linerarization |
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| CN100359294C (en) | 2008-01-02 |
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