CN102564499B - High-stability non-magnetic flow meter - Google Patents
High-stability non-magnetic flow meter Download PDFInfo
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- CN102564499B CN102564499B CN 201210034469 CN201210034469A CN102564499B CN 102564499 B CN102564499 B CN 102564499B CN 201210034469 CN201210034469 CN 201210034469 CN 201210034469 A CN201210034469 A CN 201210034469A CN 102564499 B CN102564499 B CN 102564499B
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- impeller
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- magnetic flow
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Abstract
The invention relates to a high-stability non-magnetic flow meter, which comprises a shell, an impeller, metal plates, an impeller cover and an LC (capacitance and inductance) sensor. The shell is provided with an outlet and an inlet, the impeller, the metal plate, the impeller cover and the LC sensor are disposed in the shell, the impeller is movably connected with the shell and consists of an impeller surface and a connecting column, the impeller surface comprises a plurality of blades, the connecting column is perpendicularly disposed on the impeller surface, a plurality of grooves are arranged on the outer side surface of the connecting column, and the metal plates are embedded in the grooves and are parallel to the axis of the impeller. The impeller cover is fixedly connected with the shell, a cover hole is arranged in the center of the bottom of the impeller cover, and the connecting column is inserted in the cover hole. The LC sensor is disposed on a side surface of the impeller cover and corresponds to the metal plates in the horizontal direction. Pulse metering missing or repeated pulse metering cannot be caused after the high-stability non-magnetic flow meter is used fora long time, the impeller is stably positioned in the perpendicular direction when rotating, and stability and reliability of metering operation are high. In addition, the high-stability non-magneticflow meter is convenient in metering, high in measurement precision, low in cost and convenient in realization, and cannot be easily affected by intensity of signals.
Description
Technical field
The present invention relates to a kind of flowmeter, relate in particular to a kind of high stability non-magnetic flow amount meter that improves stability and measuring accuracy.
Background technology
The flow score has magnetic flowmeter and non-magnetic flow amount meter.There is magnetic flowmeter can adsorb ducted metallic impurity because of the existence of magnetic, results in blockage easily.And magnetic flowmeter is arranged along with the increase of service time, magnetic can descend, thereby can cause the decline of the accuracy of measuring.Use non-magnetic flow amount meter can avoid above-mentioned these shortcomings.Non-magnetic flow amount meter utilizes the charge-discharge principle of lc circuit, and the decay of its charge and discharge process can be accelerated when having metal material around the lc circuit, utilizes this principle to realize that the no magnetic of flow detects.The sheet metal that traditional non-magnetic flow amount meter adopts generally all is installed on the surface level of impeller, i.e. the axis normal of sheet metal and impeller, and length pulse will occur and leaked meter or count phenomenon more service time one, influenced the accuracy of flow metering.And generally all take impeller the cylinder pillar of last, connection usefulness under structure, it is up big and down small structure, therefore cause the impeller shakiness of position in vertical direction when being subjected to the impact wheel rotation of current easily, thereby influence stability and the reliability of whole flowmeter work, can reduce the accuracy of flow metering.
Summary of the invention
The present invention mainly solves original non-magnetic flow amount meter length service time one and pulse leakage meter will occur or count phenomenon more, influences the technical matters of the accuracy of flow metering; A kind of high stability non-magnetic flow amount meter is provided, and its is long service time can not occurred pulse yet and leak meter or count phenomenon more, effectively improves reliability and the accuracy of flow metering.
The impeller that the present invention also solves original non-magnetic flow amount meter causes the impeller shakiness of position in vertical direction when rotated by water impact easily, influences stability and the reliability of whole flowmeter work, thereby reduces the technical matters of the accuracy of flow metering; A kind of high stability non-magnetic flow amount meter is provided, the stability of position on vertical direction when it can guarantee wheel rotation, thus improve stability and the reliability of whole flowmeter work, further improve the accuracy of flow metering.
Above-mentioned technical matters of the present invention is mainly solved by following technical proposals: the present invention includes the housing that has import and outlet and be located at housing interior impeller and LC sensor, be provided with impeller cover in the described housing, the side of described impeller is provided with some sheet metals that distribute along circumference of impeller, the axis of sheet metal and impeller parallels, and described LC sensor is located at the side of impeller cover and corresponding with the position of sheet metal in the horizontal direction.Offer a cavity in impeller cover, cavity is positioned at the edge of impeller cover side, and the LC sensor is installed in the cavity.Also the LC sensor can be installed in the lateral surface of impeller cover.During measurement, liquid flows into from the import of housing, flows out from the outlet of housing again, and the mobile promotion impeller rotation of liquid drives sheet metal and rotates, and causes the variation of sheet metal position.And impeller cover and housing are affixed, and namely impeller cover is fixed.Therefore, during the impeller rotation, the relative position of sheet metal and LC sensor can change, be that a certain moment sheet metal is in the dead ahead of LC sensor, the dead ahead that next moment sheet metal departs from the LC sensor, another moment sheet metal forwards the position away from the LC sensor to, etc.Speed LC sensor according to the sheet metal change in location can produce different signals, thus obtain impeller rotation, turn to and rotating speed, realize that the no magnetic of fluid flow detects.Sheet metal can be a slice, also can be multi-disc, and the multi-disc sheet metal evenly distributes along circumference of impeller.The axis of sheet metal and impeller parallels among the present invention, the sense of rotation that is sheet metal and impeller is perpendicular, effectively avoided original non-magnetic flow amount meter problem the problem includes: service time one length the problem that meter or many meters are leaked in pulse will appear, so the reliability of flow metering of the present invention and accuracy are than higher.
As preferably, described impeller comprises the wheel face that a plurality of leaf fans constitute and the joint pin that is vertical at the wheel face top, the bottom centre of wheel face is provided with mounting hole, the lateral surface of joint pin is provided with some grooves, described sheet metal is inlaid in the groove, the bottom centre of described impeller cover is provided with covers the hole, and described joint pin is inserted in and covers in the hole, and described impeller cover covers on the top of impeller.Impeller is installed in the housing of flowmeter by the mounting hole of wheel face bottom, in the general housing impeller shaft is arranged, and mounting hole is enclosed within on the impeller shaft.Impeller of the present invention adopt the impeller wheel face last, joint pin under structure, i.e. up-small and down-big structure, it is more stable to make that impeller rotates, thereby improves stability and the reliability of whole flowmeter work, further improves the accuracy of flow metering.
As preferably, the top center of described joint pin is provided with a blind hole, and the blind hole center is fitted with a thimble, and the top, lid hole of described impeller cover is provided with a hollow circular cylinder, and hollow circular cylinder is inserted in the blind hole and is enclosed within outside the thimble.Both guaranteed that impeller and impeller cover were installed together the back impeller and still can rotate swimmingly, the relative position of impeller and impeller cover is not offset when guaranteeing the impeller rotation again, further improves the degree of accuracy of flow measurement.
As preferably, described leaf fan is a plane block, and its xsect is frustum, namely inboard thick, the outside is thin, each leaf fan is radially and arranges, namely each leaf fan points to impeller axis, the angle between adjacent two leaves fan is identical.Guarantee to promote the impeller rotation once there being liquid to flow through flowmeter shell, and whole impeller is stressed evenly, spin stabilization.
As preferably, described joint pin is right cylinder, and described groove and described sheet metal are curved, and the radian of the joint pin excircle that sheet metal is shared is 90 degree.Make that to be installed in the signal that the LC sensor sensing on the impeller cover arrives stronger, more accurate.
As preferably, the position of the inductance L in the described LC sensor is corresponding with the position, middle of described sheet metal in the horizontal direction, and inductance L is perpendicular to the side of impeller cover.When sheet metal rotated to the dead ahead of inductance L, inductance L spatially presented with sheet metal and intersects and vertical position relation, and joining is positioned at the position, middle of sheet metal.Guarantee that further the LC sensor can sense stronger, accurate signal more.The inductance L packaged type is not limit, and the fixed form of LC sensor can be by beating gluing connecing, and can adopt on impeller cover mounting column yet, at pillar the LC sensor is installed again and be realized that can adopt other fixed form, fixed form is not limit yet.
As preferably, wheel face and joint pin that described leaf fan constitutes are made into integration by resin material.Easy to make, in light weight, be conducive to liquid and promote the impeller rotation, also save cost.
The invention has the beneficial effects as follows: the sheet metal by changing induction usefulness and the mounting structure of LC sensor, make longly pulse also can not occur and leak meter or count phenomenon more service time of the present invention, improve accuracy of measurement.By the improvement to blade wheel structure, the stability of position on the vertical direction when guaranteeing wheel rotation, thus improve stability and the reliability of whole flowmeter work.The present invention has eliminated the influence of the vertical vibration that traditional non-magnetic flow amount meter exists, not only metering convenient, be difficult for being subjected to that the signal power influences, the measuring accuracy height, and cost is lower, it is convenient to realize.
Description of drawings
Fig. 1 is a kind of plan structure synoptic diagram of impeller among the present invention.
Fig. 2 is a kind of axial broken section structural representation of impeller among the present invention.
Fig. 3 is a kind of side-looking structural representation of impeller cover among the present invention.
1. impellers among the figure, 2.LC sensor, 3. impeller cover, 4. sheet metal, 5. leaf fan, 6. joint pin, 7. mounting hole, 9. lid hole, 10. blind hole, 11. thimbles, 12. hollow circular cylinders.
Embodiment
Below by embodiment, and by reference to the accompanying drawings, technical scheme of the present invention is described in further detail.
Embodiment: a kind of high stability non-magnetic flow amount meter of present embodiment comprises the housing that has import and outlet and is installed on housing interior impeller 1, sheet metal 4, impeller cover 3 and LC sensor 2.As shown in Figure 1 and Figure 2, impeller 1 comprises by seven leaves fan 5 wheel faces that constitute and is vertically connected at the cylinder type joint pin 6 of wheel face top, and the bottom centre of wheel face has a mounting hole 7, and mounting hole 7 is enclosed within on the impeller shaft in the housing.Each leaf fan 5 is plane blocks, and its xsect is frustum, namely inboard thick, the outside is thin, each leaf fan 5 is radially and arranges, namely each leaf fan 5 points to impellers 1 axis, the angle that adjacent two leaves fan is 5 is identical.The lateral surface of joint pin 6 has an arc groove, and curved sheet metal 4 is inlaid in the groove, and sheet metal 4 is parallel with impeller 1 axis, and the radian of joint pin 6 excircles that sheet metal 4 is shared is 90 degree.The top center of joint pin 6 has a blind hole 10, and blind hole 10 centers are fitted with a thimble 11.Wheel face and joint pin 6 that leaf fan 5 constitutes are made by the injection moulding of resin material one.As shown in Figure 3, impeller cover 3 is fixedlyed connected with housing, and there is a lid hole 9 in the bottom centre of impeller cover 3, and a hollow circular cylinder 12 is arranged at lid 9 tops, hole.Impeller cover 3 covers on the top of impeller 1, and the joint pin 6 on the impeller 1 is inserted in the lid hole 9 of impeller cover 3, and hollow circular cylinder 12 is inserted in the blind hole 10, and hollow circular cylinder 12 is enclosed within outside the thimble 11.LC sensor 2 is installed in the side of impeller cover 3, the position of the inductance L in the LC sensor 3 is corresponding with the position, middle of sheet metal 4 in the horizontal direction, be the position, middle of inductance L and sheet metal 4 on same surface level, and inductance L is perpendicular to the side of impeller cover 3.
The course of work: the present invention is installed in the pipeline that liquid flows through, and liquid flows into from the import of housing, flows out from the outlet of housing again, and the mobile promotion impeller rotation of liquid drives sheet metal and rotates, and causes the variation of sheet metal position.And impeller cover is fixed, therefore, during the impeller rotation, the relative position of sheet metal and LC sensor can change, be that a certain moment sheet metal is in the dead ahead of LC sensor, the dead ahead that next moment sheet metal departs from the LC sensor, another moment sheet metal forwards the position away from the LC sensor to, etc.According to the speed of sheet metal change in location, the LC sensor can produce different signals, thus obtain impeller rotation, turn to and rotating speed, again by treatment circuit through a series of conversions, the flow value of the liquid of the pipeline that obtains flowing through realizes that the no magnetic of fluid flow detects.
The present invention guarantees pulse leakage meter also can not occur or count phenomenon more after long-time the use by the improvement of structure, improves accuracy of measurement.And impeller adopts up-small and down-big structure, spin stabilization, and the stability of position on the vertical direction when guaranteeing wheel rotation, thus improve stability and the reliability of whole flowmeter work.The present invention measures conveniently, is difficult for being subjected to the signal power to influence, the measuring accuracy height, and also cost is lower, it is convenient to realize.
Claims (6)
1. high stability non-magnetic flow amount meter, comprise the housing that has import and outlet and be located at housing interior impeller (1) and LC sensor (2), it is characterized in that being provided with in the described housing impeller cover (3), the side of described impeller (1) is provided with some sheet metals (4) that distribute along circumference of impeller, the axis of sheet metal (4) and impeller (1) parallels, and described LC sensor (2) is located at the side of impeller cover (3) and corresponding with the position of sheet metal (4) in the horizontal direction; Described impeller (1) comprises the wheel face that a plurality of leaf fans (5) constitute and is vertical at the joint pin (6) of wheel face top, the bottom centre of wheel face is provided with mounting hole (7), the lateral surface of joint pin (6) is provided with some grooves, described sheet metal (4) is inlaid in the groove, the bottom centre of described impeller cover (3) is provided with covers hole (9), described joint pin (6) is inserted in and covers in the hole (9), and described impeller cover (3) covers on the top of impeller (1).
2. a kind of high stability non-magnetic flow amount meter according to claim 1, the top center that it is characterized in that described joint pin (6) is provided with a blind hole (10), blind hole (10) center is fitted with a thimble (11), the top, lid hole (9) of described impeller cover (3) is provided with a hollow circular cylinder (12), and hollow circular cylinder (12) is inserted in the blind hole (10) and is enclosed within outside the thimble (11).
3. a kind of high stability non-magnetic flow amount meter according to claim 1, it is characterized in that described leaf fan (5) is a plane block, its xsect is frustum, namely the inboard is thick, the outside is thin, each leaf fan (5) is radially setting, be that each leaf fan (5) points to impeller (1) axis, the angle between adjacent two leaves fans (5) is identical.
4. according to claim 1 or 2 or 3 described a kind of high stability non-magnetic flow amount meters, it is characterized in that described joint pin (6) is right cylinder, described groove and described sheet metal (4) are curved, and the radian of joint pin (6) excircle that sheet metal (4) is shared is 90 degree.
5. according to claim 1 or 2 or 3 described a kind of high stability non-magnetic flow amount meters, the position that it is characterized in that the inductance L in the described LC sensor (3) is corresponding with the position, middle of described sheet metal (4) in the horizontal direction, and inductance L is perpendicular to the side of impeller cover (3).
6. according to claim 1 or 2 or 3 described a kind of high stability non-magnetic flow amount meters, it is characterized in that wheel face and joint pin (6) that described leaf fan (5) constitutes are made into integration by resin material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201210034469 CN102564499B (en) | 2012-02-16 | 2012-02-16 | High-stability non-magnetic flow meter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201210034469 CN102564499B (en) | 2012-02-16 | 2012-02-16 | High-stability non-magnetic flow meter |
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| CN102564499A CN102564499A (en) | 2012-07-11 |
| CN102564499B true CN102564499B (en) | 2013-09-04 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108871469A (en) * | 2018-04-16 | 2018-11-23 | 深圳市源啓智能科技有限公司 | A kind of flowmeter of non-magnetic sensor |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101135593A (en) * | 2006-08-28 | 2008-03-05 | 朱育武 | Novel heat meter |
| CN201177524Y (en) * | 2008-03-07 | 2009-01-07 | 沈阳太宇机电设备有限公司 | High precision high stability flow gauge non-magnetic sensor |
| CN102116648A (en) * | 2010-12-23 | 2011-07-06 | 河南新天科技股份有限公司 | Vertical single impeller type flow rate sensing device |
| CN202471138U (en) * | 2012-02-16 | 2012-10-03 | 浙江先芯科技有限公司 | High-stability nonmagnetic flowmeter |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2842902B1 (en) * | 2002-07-23 | 2004-11-19 | Schlumberger Services Petrol | PROPELLER FOR DATA ACQUISITION IN A FLOW |
| FR2842903B1 (en) * | 2002-07-23 | 2004-11-19 | Schlumberger Services Petrol | PROPELLER DEVICE FOR ACQUIRING DATA IN A FLOW |
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2012
- 2012-02-16 CN CN 201210034469 patent/CN102564499B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101135593A (en) * | 2006-08-28 | 2008-03-05 | 朱育武 | Novel heat meter |
| CN201177524Y (en) * | 2008-03-07 | 2009-01-07 | 沈阳太宇机电设备有限公司 | High precision high stability flow gauge non-magnetic sensor |
| CN102116648A (en) * | 2010-12-23 | 2011-07-06 | 河南新天科技股份有限公司 | Vertical single impeller type flow rate sensing device |
| CN202471138U (en) * | 2012-02-16 | 2012-10-03 | 浙江先芯科技有限公司 | High-stability nonmagnetic flowmeter |
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| CN102564499A (en) | 2012-07-11 |
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