CN104949716A - Corrosion-resistant small-pulse equivalent flow meter - Google Patents
Corrosion-resistant small-pulse equivalent flow meter Download PDFInfo
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- CN104949716A CN104949716A CN201510353176.XA CN201510353176A CN104949716A CN 104949716 A CN104949716 A CN 104949716A CN 201510353176 A CN201510353176 A CN 201510353176A CN 104949716 A CN104949716 A CN 104949716A
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- magnet steel
- corrosion
- flow meter
- equivalent flow
- angular transducer
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Abstract
The invention relates to a corrosion-resistant small-pulse equivalent flow meter which comprises a body (1). The body (1) is internally provided with two cylindrical cavities (2) which are tangent to each other and an inlet (16) and an outlet (17) which are connected with the cylindrical cavities (2), a fixed shaft (3) is arranged in each cylindrical cavity (2), each fixed shaft (3) is provided with an oval rotor (4) in a sleeved mode, the end of one fixed shaft (3) is provided with a magnetic steel seal cavity (6) which is tightly matched with the oval rotor (4) of the fixed shaft (3), magnetic steel (7) is sealed in the magnetic steel seal cavity (6), a containing cavity is formed in the position, opposite to the magnetic steel (7), of the body (1), and an angle transducer (8) is fixed in the containing cavity and connected with a wire output end (9). By means of the corrosion-resistant small-pulse equivalent flow meter, the corrosion problem of the rotor flow meter can be solved, a small pulse equivalent can be obtained, and the corrosion-resistant small-pulse equivalent flow meter is suitable for conducting precision measurement on corrosive media.
Description
Technical field
The invention belongs to medium field of measuring techniques, relate to a kind of flowmeter measuring Korrosionsmedium, particularly relate to a kind of corrosion-resistant small-pulse effect equivalent flow meter.
Background technology
Spinner-type flowmeter is the conventional apparatus carrying out Medium Measurement.At present, the rotation of the rotor of general spinner-type flowmeter has two kinds of way of outputs, that is: mechanical drive and Magnetic drive.
But, no matter be mechanical drive or Magnetic drive, all have an insoluble difficult problem.Wherein, for mechanically operated spinner-type flowmeter, need to adopt seal to seal, but in corrosive situations, when namely measuring Korrosionsmedium, it seals bad solution, and Korrosionsmedium easily erodes its accurate device.For the spinner-type flowmeter of Magnetic drive, because magnet steel is all arranged in medium to be measured, cause magnet steel easily by dielectric corrosion, make the bad solution of the corrosion resistance of the magnet steel in medium.
In view of the above-mentioned technological deficiency of prior art, in the urgent need to developing a kind of flowmeter of novel measurement Korrosionsmedium.
Summary of the invention
The object of the invention is to overcome the shortcoming existed in prior art, provide a kind of corrosion-resistant small-pulse effect equivalent flow meter, this flowmeter can solve the etching problem of spinner-type flowmeter, and can obtain small-pulse effect equivalent, is suitable for carrying out precision measurement to Korrosionsmedium.
To achieve these goals, the invention provides following technical scheme: a kind of corrosion-resistant small-pulse effect equivalent flow meter, it comprises body, the entrance and exit being provided with two cylindrical cavities tangent to each other in described body and being connected with described cylindrical cavity, a stationary shaft is provided with in each described cylindrical cavity, stationary shaft described in every root is all arranged with an oval rotor, it is characterized in that, wherein the end sleeve of a described stationary shaft is provided with magnet steel seal chamber close-fitting with the described oval rotor on it, magnet steel is sealed with in described magnet steel seal chamber, position relative with described magnet steel on described body offers container cavity, angular transducer is fixed with in described container cavity, described angular transducer is connected with wire output end, the anglec of rotation of described magnet steel can be detected by described angular transducer thus calculate flow and export pulse by described wire output end.
Further, wherein, described angular transducer is two tunnel Hall elements intersected, described magnet steel is the magnet steel of radial magnetizing, the magnetic direction of described magnet steel can be detected by described angular transducer, obtain the current angular of described rotor, then calculate and should export how many pulses.
Further, wherein, the openend of described two cylindrical cavities tangent to each other is provided with seal and gland, and described magnet steel seal chamber is through described seal and gland.
Again further, wherein, the arranged outside of described gland has cover plate, and described container cavity is opened in the cover plate of described body, and described angular transducer is arranged in sensor holder, and described sensor holder is arranged in described container cavity by sealing socket.
Again further, wherein, be inlaid with axle sleeve in described oval rotor and be arranged on described stationary shaft by described axle sleeve.
Compared with existing spinner-type flowmeter, corrosion-resistant small-pulse effect equivalent flow meter of the present invention has following Advantageous Effects:
(1) seal the magnet steel of one piece of radial magnetizing at the axial end stainless steel magnet steel seal chamber of rotor, solve the problem of easy the being corroded property dielectric corrosion of magnet steel.
(2) just an angular transducer installed to the position of axle head in body exterior and segmenting, small-pulse effect equivalent can obtained.
(3) this flowmeter is applicable to the accurate measurement with Korrosionsmedium.
Accompanying drawing explanation
Fig. 1 is the longitudinal sectional view of corrosion-resistant small-pulse effect equivalent flow meter of the present invention.
Fig. 2 is the transverse sectional view of corrosion-resistant small-pulse effect equivalent flow meter of the present invention.
Embodiment
Below in conjunction with drawings and Examples, the present invention is further described, and the content of embodiment is not as the restriction to protection scope of the present invention.
The present invention relates to a kind of corrosion-resistant small-pulse effect equivalent flow meter, it is applicable to the accurate measurement with Korrosionsmedium.
Fig. 1 shows the longitudinal sectional view of corrosion-resistant small-pulse effect equivalent flow meter of the present invention.Fig. 2 shows the transverse sectional view of corrosion-resistant small-pulse effect equivalent flow meter of the present invention.See Fig. 1 and Fig. 2, similar with existing spinner-type flowmeter, corrosion-resistant small-pulse effect equivalent flow meter of the present invention comprises body 1.Be provided with two cylindrical cavities 2 tangent to each other and the entrance 16 be connected with described cylindrical cavity 2 in described body 1 and export 17.Medium to be measured is entered in described cylindrical cavity 2 by described entrance 16, and is flowed out by described outlet 17, thus realizes the measurement of medium.
A stationary shaft 3 is provided with in each described cylindrical cavity 2.Described stationary shaft 3 is fixed in described cylindrical cavity 2.Meanwhile, stationary shaft 3 described in every root is all arranged with an oval rotor 4.Wherein, as shown in Figure 2, when the perpendicular intersection of the major axis of two described oval rotors 4, one of them oval rotor 4 just in time can block described cylindrical cavity 2, passes through to stop medium.
In the present invention, preferably, be inlaid with axle sleeve 5 in described oval rotor 4 and be arranged on described stationary shaft 3 by described axle sleeve 5.Described axle sleeve 5 and the sliding friction of described stationary shaft 3, thus described oval rotor 4 can be rotated around described stationary shaft 3.
Different from existing spinner-type flowmeter, as shown in Figure 1, in the present invention, wherein the end sleeve of a described stationary shaft 3 is provided with and the close-fitting magnet steel seal chamber 6 of described oval rotor 4 on it.Magnet steel 7 is sealed with in described magnet steel seal chamber 6.Like this, described magnet steel seal chamber 6 can rotate together with described oval rotor 4, thus described magnet steel 7 can be rotated together with described oval rotor 4.Preferably, described magnet steel seal chamber 6 is made up of stainless steel.Like this, its interference to angular transducer 8 described later can be reduced.
Meanwhile, on described body 1, the position relative with described magnet steel 7 offers container cavity.Angular transducer 8 is fixed with in described container cavity.Described angular transducer 8 is connected with wire output end 9.Described wire output end 9 can be connected to external meters or system.Like this, the anglec of rotation of described magnet steel 7 can be detected by described angular transducer 8 thus calculate flow and export pulse to external meters or system by described wire output end 9, to obtain the flow of medium.
Wherein, in the present invention, described angular transducer 8 is two tunnel Hall elements intersected.Described magnet steel 7 is magnet steel of radial magnetizing.Like this, when described magnet steel 7 rotates together with described oval rotor 4, its magnetic direction can change.And the magnetic direction of described magnet steel 7 just can be detected by described angular transducer 8, obtain the current angular of described rotor 4, then calculate and should export how many pulses.
As shown in Figure 1, in the present invention, preferably, the openend of described two cylindrical cavities 2 tangent to each other is provided with seal 10 and gland 11.Described magnet steel seal chamber 6 is through described seal 10 and gland 11.By described seal 10 and described gland 11, described stationary shaft 3 and oval rotor 4 etc. are sealed in described cylindrical cavity 2.Wherein, described seal 10 can prevent medium from flowing out and seepage.Described gland 11 can protect described seal 10, prevents outflow and the seepage of medium further.
In addition, in the present invention, preferably, the arranged outside of described gland 11 has cover plate 12.Wherein, the described container cavity holding described angular transducer 7 is opened in described cover plate 12.More preferably, described angular transducer 8 is installed, such as, stick with glue knot in sensor holder 14.Described sensor holder 14 is arranged in described container cavity by sealing socket 13.More preferably, packing washer is provided with between described sealing socket 13 and described container cavity.Like this, even if there is medium to flow out by described seal 10 and gland 11 or ooze out, also can not corrode or damage described angular transducer 8, decrease the damage to described angular transducer 8.
The above embodiment of the present invention is only for example of the present invention is clearly described, and is not the restriction to embodiments of the present invention.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here cannot give exhaustive to all embodiments.Every belong to technical scheme of the present invention the apparent change of extending out or variation be still in the row of protection scope of the present invention.
Claims (5)
1. a corrosion-resistant small-pulse effect equivalent flow meter, it comprises body (1), be provided with two cylindrical cavity (2) and entrances (16) be connected with described cylindrical cavity (2) tangent to each other in described body (1) and export (17), a stationary shaft (3) is provided with in each described cylindrical cavity (2), stationary shaft (3) described in every root is all arranged with an oval rotor (4), it is characterized in that, wherein the end sleeve of a described stationary shaft (3) is provided with magnet steel seal chamber (6) close-fitting with the described oval rotor (4) on it, magnet steel (7) is sealed with in described magnet steel seal chamber (6), the upper position relative with described magnet steel (7) of described body (1) offers container cavity, angular transducer (8) is fixed with in described container cavity, described angular transducer (8) is connected with wire output end (9), the anglec of rotation of described magnet steel (7) can be detected by described angular transducer (8) thus calculate flow and export pulse by described wire output end (9).
2. corrosion-resistant small-pulse effect equivalent flow meter according to claim 1, it is characterized in that, described angular transducer (8) is two tunnel Hall elements intersected, described magnet steel (7) is the magnet steel of radial magnetizing, the magnetic direction of described magnet steel (7) can be detected by described angular transducer (8), obtain the current angular of described oval rotor (4), then calculate and should export how many pulses.
3. corrosion-resistant small-pulse effect equivalent flow meter according to claim 2, it is characterized in that, the openend of described two cylindrical cavities (2) tangent to each other is provided with seal (10) and gland (11), and described magnet steel seal chamber (6) is through described seal (10) and gland (11).
4. corrosion-resistant small-pulse effect equivalent flow meter according to claim 3, it is characterized in that, the arranged outside of described gland (11) has cover plate (12), described container cavity is opened in described cover plate (12), described angular transducer (8) is arranged in sensor holder (14), and described sensor holder (14) is arranged in described container cavity by sealing socket (13).
5. corrosion-resistant small-pulse effect equivalent flow meter according to claim 4, it is characterized in that, be inlaid with axle sleeve (5) in described oval rotor (4) and be arranged on described stationary shaft (3) by described axle sleeve (5).
Priority Applications (1)
| 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 |
Applications Claiming Priority (1)
| 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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| Publication Number | Publication Date |
|---|---|
| CN104949716A true CN104949716A (en) | 2015-09-30 |
| CN104949716B CN104949716B (en) | 2017-10-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510353176.XA Expired - Fee Related CN104949716B (en) | 2015-06-18 | 2015-06-18 | A kind of corrosion-resistant small-pulse effect equivalent flow meter |
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Cited By (1)
| 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)
| 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 |
-
2015
- 2015-06-18 CN CN201510353176.XA patent/CN104949716B/en not_active Expired - Fee Related
Patent Citations (5)
| 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 |
Cited By (1)
| 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 |
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| CN104949716B (en) | 2017-10-24 |
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Granted publication date: 20171024 Termination date: 20210618 |