CN104949716B - A kind of corrosion-resistant small-pulse effect equivalent flow meter - Google Patents

A kind of corrosion-resistant small-pulse effect equivalent flow meter Download PDF

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Publication number
CN104949716B
CN104949716B CN201510353176.XA CN201510353176A CN104949716B CN 104949716 B CN104949716 B CN 104949716B CN 201510353176 A CN201510353176 A CN 201510353176A CN 104949716 B CN104949716 B CN 104949716B
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China
Prior art keywords
magnet steel
corrosion
effect equivalent
angular transducer
flow meter
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Expired - Fee Related
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CN201510353176.XA
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Chinese (zh)
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CN104949716A (en
Inventor
吴叶军
胡祥安
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Hefei Jing Te Instrument Co Ltd
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Hefei Jing Te Instrument Co Ltd
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Publication of CN104949716B publication Critical patent/CN104949716B/en
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Abstract

The present invention relates to corrosion-resistant small-pulse effect equivalent flow meter, including body (1), two cylindrical cavities (2) tangent to each other and the entrance (16) being connected with cylindrical cavity (2) and outlet (17) are provided with body (1), a fixing axle (3) is both provided with each cylindrical cavity (2), an oval rotor (4) is all arranged with every fixing axle (3), the end sleeve of wherein one fixing axle (3) is provided with and the close-fitting magnet steel seal cavity (6) of oval rotor (4) thereon, magnet steel (7) is sealed with magnet steel seal cavity (6), on body (1) accommodating chamber is offered at the position relative with magnet steel (7), angular transducer (8) is fixed with accommodating chamber, angular transducer (8) is connected with wire output end (9).The flowmeter can solve the problem that the etching problem of spinner flowmeter, and can obtain small-pulse effect equivalent, suitable for carrying out accurate measurement to Korrosionsmedium.

Description

A kind of corrosion-resistant small-pulse effect equivalent flow meter
Technical field
The invention belongs to medium field of measuring techniques, it is related to a kind of flowmeter for measuring Korrosionsmedium, more particularly to one Plant corrosion-resistant small-pulse effect equivalent flow meter.
Background technology
Spinner flowmeter is the conventional apparatus for carrying out Medium Measurement.At present, the rotation of the rotor of general spinner flowmeter There are two kinds of way of outputs, i.e.,:Machine driving and Magnetic drive.
But, either machine driving or Magnetic drive, all there are insoluble problem.Wherein, for machinery biography Dynamic spinner flowmeter still, in corrosive situations, that is, measures Korrosionsmedium, it is necessary to sealed using seal When, it seals bad solution, and Korrosionsmedium easily erodes its accurate device.For the spinner flowmeter of Magnetic drive, Be all located at due to magnet steel in medium to be measured, cause magnet steel easily by dielectric corrosion so that magnet steel in medium it is corrosion-resistant Property it is bad solve.
In view of the above-mentioned technological deficiency of prior art, in the urgent need to developing a kind of flow of new measurement Korrosionsmedium Meter.
The content of the invention
It is an object of the invention to overcome shortcoming present in prior art, there is provided a kind of corrosion-resistant small-pulse effect equivalent flow Meter, the flowmeter can solve the problem that the etching problem of spinner flowmeter, and can obtain small-pulse effect equivalent, suitable for entering to Korrosionsmedium Row accurate measurement.
To achieve these goals, the present invention provides following technical scheme:A kind of corrosion-resistant small-pulse effect equivalent flow meter, its Including body, be provided with the body two cylindrical cavities tangent to each other and the entrance being connected with the cylindrical cavity and It is both provided with all being arranged with an ellipse in a fixing axle, the every fixing axle in outlet, each cylindrical cavity Rotor, it is characterised in that the end sleeve of wherein one fixing axle is provided with to be fitted close with the oval rotor thereon Magnet steel seal cavity, be sealed with position relative with the magnet steel on magnet steel, the body in the magnet steel seal cavity Offer and angular transducer is fixed with accommodating chamber, the accommodating chamber, the angular transducer is connected with wire output end, passed through The angular transducer can detect the anglec of rotation of the magnet steel to calculate outflow and export by the wire output end Pulse.
Further, wherein, the angular transducer is two tunnel intersected Hall sensors, and the magnet steel is footpath To the magnet steel magnetized, the magnetic direction of the magnet steel can be detected by the angular transducer, the current of the rotor is obtained Angle, then calculate how many pulse should be exported.
Further, wherein, the openend of described two cylindrical cavities tangent to each other is provided with seal and gland, The magnet steel seal cavity passes through the seal and gland.
Yet further, wherein, cover plate is provided with the outside of the gland, the accommodating chamber is opened in the lid of the body In plate, the angular transducer is arranged in sensor holder, and the sensor holder is arranged in the accommodating chamber by seal receptacle.
Again further, wherein, axle sleeve is inlaid with the oval rotor and is arranged on described by the axle sleeve In fixing axle.
Compared with existing spinner flowmeter, corrosion-resistant small-pulse effect equivalent flow meter of the invention has following Advantageous Effect:
(1) in the axial end magnet steel of stainless steel magnet steel seal cavity one piece of radial magnetizing of sealing of rotor, magnetic is solved Steel easily being corroded property dielectric corrosion the problem of.
(2) an angular transducer just is installed to the position of shaft end in body exterior and be finely divided, scun can be obtained Rush equivalent.
(3) this flowmeter is applied to the accurate measurement with Korrosionsmedium.
Brief description of the drawings
Fig. 1 is the longitudinal sectional view of the corrosion-resistant small-pulse effect equivalent flow meter of the present invention.
Fig. 2 is the transverse sectional view of the corrosion-resistant small-pulse effect equivalent flow meter of the present invention.
Embodiment
The present invention is further described with reference to the accompanying drawings and examples, and the content of embodiment is not as the guarantor to the present invention Protect the limitation of scope.
The present invention relates to a kind of corrosion-resistant small-pulse effect equivalent flow meter, it is applied to the accurate meter with Korrosionsmedium Amount.
Fig. 1 shows the longitudinal sectional view of the corrosion-resistant small-pulse effect equivalent flow meter of the present invention.Fig. 2 shows the present invention's The transverse sectional view of corrosion-resistant small-pulse effect equivalent flow meter.It is similar with existing spinner flowmeter referring to Fig. 1 and Fig. 2, this hair Bright corrosion-resistant small-pulse effect equivalent flow meter includes body 1.Two cylindrical cavities 2 tangent to each other are provided with the body 1 And the entrance 16 being connected with the cylindrical cavity 2 and outlet 17.Medium to be measured enters the circle by the entrance 16 In cylinder chamber 2, and flowed out by the outlet 17, so as to realize the measurement of medium.
A fixing axle 3 is both provided with each cylindrical cavity 2.The fixing axle 3 is fixed on the cylindrical cavity 2 In.Meanwhile, an oval rotor 4 is all arranged with the every fixing axle 3.Wherein, as shown in Fig. 2 when two it is described ellipse During the perpendicular intersection of the major axis of round rotor 4, one of ellipse rotor 4 can just block the cylindrical cavity 2, to hinder Only medium passes through.
In the present invention, it is preferred to, axle sleeve 5 is inlaid with the oval rotor 4 and institute is arranged on by the axle sleeve 5 State in fixing axle 3.The axle sleeve 5 and the sliding friction of fixing axle 3, so that the oval rotor 4 can be around described Fixing axle 3 is rotated.
It is different from existing spinner flowmeter, as shown in figure 1, in the present invention, wherein the end of a fixing axle 3 It is arranged with and the oval close-fitting magnet steel seal cavity 6 of rotor 4 thereon.Sealed in the magnet steel seal cavity 6 There is magnet steel 7.So, the magnet steel seal cavity 6 can be rotated together with the oval rotor 4, so that the energy of the magnet steel 7 Rotated together with the oval rotor 4.Preferably, the magnet steel seal cavity 6 is made of stainless steel.So, it is possible to reduce Its interference to angular transducer 8 described later.
Meanwhile, offer accommodating chamber at the position relative with the magnet steel 7 on the body 1.It is fixed in the accommodating chamber Angled sensor 8.The angular transducer 8 is connected with wire output end 9.The wire output end 9 may be coupled to outside Instrument or system.So, it can detect the anglec of rotation of the magnet steel 7 to calculate outflow simultaneously by the angular transducer 8 Pulse is exported to external meters or system by the wire output end 9, to obtain the flow of medium.
Wherein, in the present invention, the angular transducer 8 is two tunnel intersected Hall sensors.The magnet steel 7 It is the magnet steel of radial magnetizing.So, when the magnet steel 7 is rotated together with the oval rotor 4, its magnetic direction can occur Change.And the magnetic direction of the magnet steel 7 can be just detected by the angular transducer 8, obtain the rotor 4 works as anterior angle Degree, then calculate how many pulse should be exported.
As shown in figure 1, in the present invention, it is preferred to, the openend of described two cylindrical cavities 2 tangent to each other is provided with Seal 10 and gland 11.The magnet steel seal cavity 6 passes through the seal 10 and gland 11.Pass through the He of seal 10 The fixing axle 3 and oval rotor 4 etc. are sealed in the cylindrical cavity 2 by the gland 11.Wherein, the seal 10 It can prevent medium from flowing out and seepage.The gland 11 can protect the seal 10, further prevent medium outflow and Seepage.
In addition, in the present invention, it is preferred to, the outside of the gland 11 is provided with cover plate 12.Wherein, the angle is accommodated The accommodating chamber of sensor 7 is opened in the cover plate 12.It is highly preferred that the angular transducer 8 is installed, such as with gluing Knot is in sensor holder 14.The sensor holder 14 is arranged in the accommodating chamber by seal receptacle 13.It is highly preferred that described close Seal washer is provided between envelope seat 13 and the accommodating chamber.So, even if there is medium to pass through the seal 10 and gland 11 Flow out or ooze out, will not also corrode or damage the angular transducer 8, reduce the damage to the angular transducer 8.
The above embodiment of the present invention is only intended to clearly illustrate example of the present invention, and is not to the present invention Embodiment restriction.For those of ordinary skill in the field, it can also make on the basis of the above description Other various forms of changes or variation.Here all embodiments can not be exhaustive.Every skill for belonging to the present invention Row of the obvious changes or variations that art scheme is extended out still in protection scope of the present invention.

Claims (5)

1. a kind of corrosion-resistant small-pulse effect equivalent flow meter, it includes being provided with two phases each other in body (1), the body (1) The cylindrical cavity (2) cut and the entrance (16) being connected with the cylindrical cavity (2) and outlet (17), each cylindrical cavity (2) it is both provided with being all arranged with an oval rotor (4) on a fixing axle (3), the every fixing axle (3) in, it is special Levy and be, wherein the end sleeve of a fixing axle (3) is provided with and the close-fitting magnetic of the oval rotor (4) thereon It is sealed with steel seal cavity (6), the magnet steel seal cavity (6) on magnet steel (7), the body (1) and the magnet steel (7) phase To position at offer angular transducer (8) be fixed with accommodating chamber, the accommodating chamber, the angular transducer (8) is with leading Line output terminal (9) is connected, and can detect the anglec of rotation of the magnet steel (7) to calculate stream by the angular transducer (8) Measure and pulse is exported by the wire output end (9).
2. corrosion-resistant small-pulse effect equivalent flow meter according to claim 1, it is characterised in that the angular transducer (8) It is two tunnel intersected Hall sensors, the magnet steel (7) is the magnet steel of radial magnetizing, passes through the angular transducer (8) magnetic direction of the magnet steel (7) can be detected, the current angular of the oval rotor (4) is obtained, then calculate should be defeated How many pulse gone out.
3. corrosion-resistant small-pulse effect equivalent flow meter according to claim 2, it is characterised in that described two tangent to each other The openend of cylindrical cavity (2) is provided with seal (10) and gland (11), and the magnet steel seal cavity (6) passes through the sealing Part (10) and gland (11).
4. corrosion-resistant small-pulse effect equivalent flow meter according to claim 3, it is characterised in that the outside of the gland (11) Cover plate (12) is provided with, the accommodating chamber is opened in the cover plate (12), the angular transducer (8) is arranged on sensor holder (14) in, the sensor holder (14) is arranged in the accommodating chamber by seal receptacle (13).
5. corrosion-resistant small-pulse effect equivalent flow meter according to claim 4, it is characterised in that the oval rotor (4) Inside it is inlaid with axle sleeve (5) and is arranged on by the axle sleeve (5) in the fixing axle (3).
CN201510353176.XA 2015-06-18 2015-06-18 A kind of corrosion-resistant small-pulse effect equivalent flow meter Expired - Fee Related CN104949716B (en)

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CN201510353176.XA CN104949716B (en) 2015-06-18 2015-06-18 A kind of corrosion-resistant small-pulse effect equivalent flow meter

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Application Number Priority Date Filing Date Title
CN201510353176.XA CN104949716B (en) 2015-06-18 2015-06-18 A kind of corrosion-resistant small-pulse effect equivalent flow meter

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CN104949716B true CN104949716B (en) 2017-10-24

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107817030A (en) * 2016-09-14 2018-03-20 方惠娥 A kind of birotor positive displacement accumulated fluid meter

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2188753Y (en) * 1993-12-25 1995-02-01 中国石化大庆石油化工总厂炼油厂 Corrosion resisting elliptic gear volume flow meter
AU2006228061A1 (en) * 2005-10-17 2007-05-03 Trimec Industries Pty Limited Improvements in oval rotor flowmeters having direct pulse generation
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
CN204807143U (en) * 2015-06-18 2015-11-25 合肥精特仪表有限公司 Corrosion -resistant little pulse equivalent flowmeter

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2188753Y (en) * 1993-12-25 1995-02-01 中国石化大庆石油化工总厂炼油厂 Corrosion resisting elliptic gear volume flow meter
AU2006228061A1 (en) * 2005-10-17 2007-05-03 Trimec Industries Pty Limited Improvements in oval rotor flowmeters having direct pulse generation
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
CN204807143U (en) * 2015-06-18 2015-11-25 合肥精特仪表有限公司 Corrosion -resistant little pulse equivalent flowmeter

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