CN202533116U - Electromagnetic flowmeter - Google Patents
Electromagnetic flowmeter Download PDFInfo
- Publication number
- CN202533116U CN202533116U CN2012201892197U CN201220189219U CN202533116U CN 202533116 U CN202533116 U CN 202533116U CN 2012201892197 U CN2012201892197 U CN 2012201892197U CN 201220189219 U CN201220189219 U CN 201220189219U CN 202533116 U CN202533116 U CN 202533116U
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- electromagnetic flowmeter
- coreless armature
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- hollow electrode
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Abstract
The utility model discloses an electromagnetic flowmeter. The electromagnetic flowmeter comprises a shell, and a measuring tube and a hollow electrode, which are arranged in the shell. A plurality of point electrodes are arranged along a circumferential direction on the round section of the front end of the hollow electrode. The round section is perpendicular to the central axis of the hollow electrode. The electromagnetic flowmeter also comprises a dirt scraping device, and the dirt scraping device comprises a scrape body and a slim shaft. The cutting face of the scraper body is tightly attached to the front end face of the hollow electrode. One end of the slim shaft is connected with the scraper body, and the other end of the slim shaft penetrates through an inner cavity of the hollow electrode, and is limited through a detachable limiting structure. The slim shaft and the hollow electrode are matched in a coaxial rotating way. The dirt scraping device is arranged, so that the dirt of the electrode can be mechanically cleaned through external force, and the electromagnetic flowmeter has a good cleaning effect, and is time-saving and labor-saving; and by the electrodes, a grounding ring is not required to be added, the whole average speed measurement process is limited within an equilibrium electrode plane, electrical noise interference is completely eliminated, and an accurate measurement result can be provided.
Description
Technical field
The utility model relates to instrument field, the particularly a kind of multi-electrode electromagnetic flow meter that can realize that machinery is removed contamination.
Background technology
Electromagnetic flowmeter (Electromagnetic Flowmeter) is to be made up of the sensor of direct contact tube track media and upper end signal converter two parts.Its design concept adds a magnetic field based on Faraday's electromagnetic induction law through the both sides at pipeline, and measured medium flows through pipeline with regard to cutting magnetic line, on two detecting electrodes, produces induced potential, and its size is proportional to the movement velocity of fluid.Electromagnetic flowmeter can be used to measure the flow of various suspensions, gasification vapour and stickums such as acid, alkali, salt solusion, coal water mixture, ore pulp, mortar plaster, paper pulp, resin, latex rubber, synthon slurry and sensitive emulsion.Have the following advantages:
1. instrument structure is simple, reliable, no movable member, long working life.Do not have the choked flow part that dams, do not have the pressure loss and fluid blockage phenomenon.
2. do not have mechanical inertia, response is quick, and good stability can be applicable to automatic detection, adjusting and stored program controlled.
3. measuring accuracy does not receive the influence of the physical index such as kind and temperature thereof, viscosity, density, pressure of measured medium.The various combination of electrode materials such as employing teflon or rubber material lining and Hc, Hb, 316L, Ti can adapt to the needs of different medium.
The external structure of conventional electromagnetic flowmeter is as depicted in figs. 1 and 2; Comprise shell, flange, instrument connector, electric interfaces and LCDs etc.; Its inner sensor construction is as shown in Figure 3, has comprised measuring tube, lining, electrode, packing ring and insulating washer etc.
Measuring the fluid that dirt and generation attachment take place easily, during like media such as slurries, sewage, electrode surface often has dirt to cover; Make instrument output that swing and drift take place; Can't measure when serious, at this moment, just need clean electrode; But normally adopt the manual perhaps mode of high-pressure spray wash of scrubbing at present, not only waste time and energy but also not enough environmental protection.
Summary of the invention
In view of this, the purpose of the utility model provides a kind of novel electromagnetic flowmeter.Through dirt scraping equipment is set, can remove the dirt of electrode surface through the mode of mechanical removal, time saving and energy saving and environmental protection on electrode.
The purpose of the utility model realizes through following technical scheme:
The electromagnetic flowmeter of the utility model comprises shell, and the measuring tube and the coreless armature that are arranged on enclosure; The upper edge, nose circle cross section of said coreless armature circumferentially is provided with a plurality of point electrodes, and the axis of this circular section and coreless armature is perpendicular, it is characterized in that: said electromagnetic flowmeter also comprises dirt scraping equipment; Said dirt scraping equipment comprises scrapes cutter hub and thin axle; The said sword face of scraping cutter hub is close to the front end end face setting of coreless armature, an end of said thin axle with scrape cutter hub and be connected, the other end carries out spacing through dismountable position limiting structure after passing the inner chamber of coreless armature; Cooperate for coaxial rotation between said thin axle and the coreless armature; Under external force, said thin axle rotation drives the scraper body and on the front end end face of coreless armature, pivots, and realization machinery is removed contamination.
Further, point electrode comprises at least one pair of detecting electrode and a pair of ground-electrode;
Further, point electrode comprises a pair of detecting electrode and a pair of ground-electrode, and said detecting electrode and ground-electrode evenly are arranged on the circular section of coreless armature with the mode that staggers at interval, and the angle between the adjacent electrode is 90 °;
Further, said position limiting structure is a stop block, is provided with the compression spring that is set on the thin axle axle body between the rear end face of said stopper and coreless armature;
Further, adopt mechanical seal between the inner chamber of said thin axle axle body and coreless armature.
The beneficial effect of the utility model is:
1. the utility model can be realized the mechanical removal to dirt on the electrode through external force through a dirt scraping equipment is set on coreless armature, removes respond wellly, time saving and energy saving, and can use no or little water, reaches good environment protecting;
2. the utility model need not add ground loop again through adopting multiple electrode structure, and the process of the average velocity of whole measurement all is limited in carrying out within the counter electrode plane, and electrical noise disturbs and eliminated fully simultaneously, and more accurate measurement result can be provided.
3. the utility model reasonable in design is compact, and it is actual more to meet existing use.
Other advantages, target and the characteristic of the utility model will be set forth in instructions subsequently to a certain extent; And to a certain extent; Based on being conspicuous to those skilled in the art, perhaps can from the practice of the utility model, obtain instruction to investigating of hereinafter.The target of the utility model and other advantages can realize and obtain through following instructions and claims.
Description of drawings
For the purpose, technical scheme and the advantage that make the utility model is clearer, will combine accompanying drawing that the utility model is done further to describe in detail below, wherein:
Fig. 1 is the external structure synoptic diagram of electromagnetic flowmeter;
Fig. 2 be Fig. 1 along A to synoptic diagram;
Fig. 3 is the internal sensor structural drawing of existing electromagnetic flowmeter;
Fig. 4 is the internal sensor structural drawing of the utility model;
Fig. 5 is the multiple electrode structure synoptic diagram of the utility model.
Embodiment
Below will be with reference to accompanying drawing, the preferred embodiment of the utility model is carried out detailed description.Should be appreciated that preferred embodiment has been merely explanation the utility model, rather than in order to limit the protection domain of the utility model.
As shown in Figure 4, the electromagnetic flowmeter of the utility model comprises shell; And the measuring tube 1 and coreless armature 2 that are arranged on enclosure, the upper edge, nose circle cross section of coreless armature 2 circumferentially is provided with a plurality of point electrodes, and the axis of this circular section and coreless armature is perpendicular; Electromagnetic flowmeter also comprises dirt scraping equipment; Dirt scraping equipment comprises scrapes cutter hub 3 and thin axle 4, and the sword face of scraping cutter hub 3 is close to the front end end face setting of coreless armature 2, an end of thin axle 4 with scrape cutter hub and be connected; The other end carries out spacing through dismountable position limiting structure 5 after passing the inner chamber of coreless armature; In the present embodiment, position limiting structure 5 is a stop block, is provided with the compression spring 6 that is set on the thin axle axle body between the rear end face of said stopper and coreless armature; This compression spring applies reacting force through two ends to the rear end face of stopper and coreless armature, makes the sword face of scraping cutter hub can fit in the front end end face of coreless armature firmly.
For coaxial rotation cooperates, under external force, thin axle 4 rotates drive scraper bodies 3 and on the front end end face of coreless armature 2, pivots between thin axle 4 and the coreless armature 2, and realization machinery is removed contamination.The dirt scraping equipment of the utility model can manual operation, also can strike off automatically through the thin axle of external motor driven, implements to strike off effective easily.
In the present embodiment, adopt mechanical seal between the axle body of thin axle 4 and the inner chamber of coreless armature 2, thereby can prevent the medium outflow.
As shown in Figure 5; In the present embodiment, point electrode comprises a pair of detecting electrode and a pair of ground-electrode, and detecting electrode and ground-electrode evenly are arranged on the circular section of coreless armature with the mode that staggers at interval; Angle between the adjacent electrode is 90 °; The utility model is through adopting multiple electrode structure, and detecting electrode and ground-electrode have following benefit in same plane:
1. whenever need not add ground loop again;
2. the process of the average velocity of whole measurement all is limited in carrying out within the counter electrode plane;
3. electrical noise disturbs and to be eliminated fully, because magnetic field is uniformly, liquid is again that to flow through moment on counter electrode plane measured, and therefore, multiple electrode structure can provide more accurate measurement result.
Certainly, adopting a pair of detecting electrode and a pair of ground-electrode is a kind of implementation of multiple electrode structure, in actual the manufacturing, can design many structures to potential electrode according to practical demand.
Explanation is at last; Above embodiment is only unrestricted in order to the technical scheme of explanation the utility model; Although with reference to preferred embodiment the utility model is specified, those of ordinary skill in the art should be appreciated that and can make amendment or be equal to replacement the technical scheme of the utility model; And not breaking away from the aim and the scope of present technique scheme, it all should be encompassed in the middle of the claim scope of the utility model.
Claims (5)
1. electromagnetic flowmeter comprises shell, and the measuring tube and the coreless armature that are arranged on enclosure; The upper edge, nose circle cross section of said coreless armature circumferentially is provided with a plurality of point electrodes, and the axis of this circular section and coreless armature is perpendicular, it is characterized in that: said electromagnetic flowmeter also comprises dirt scraping equipment; Said dirt scraping equipment comprises scrapes cutter hub and thin axle; The said sword face of scraping cutter hub is close to the front end end face setting of coreless armature, an end of said thin axle with scrape cutter hub and be connected, the other end carries out spacing through dismountable position limiting structure after passing the inner chamber of coreless armature; Cooperate for coaxial rotation between said thin axle and the coreless armature; Under external force, said thin axle rotation drives the scraper body and on the front end end face of coreless armature, pivots, and realization machinery is removed contamination.
2. electromagnetic flowmeter according to claim 1 is characterized in that: point electrode comprises at least one pair of detecting electrode and a pair of ground-electrode.
3. electromagnetic flowmeter according to claim 2; It is characterized in that: point electrode comprises a pair of detecting electrode and a pair of ground-electrode; Said detecting electrode and ground-electrode evenly are arranged on the circular section of coreless armature with the mode that staggers at interval, and the angle between the adjacent electrode is 90 °.
4. electromagnetic flowmeter according to claim 1 is characterized in that: said position limiting structure is a stop block, is provided with the compression spring that is set on the thin axle axle body between the rear end face of said stopper and coreless armature.
5. electromagnetic flowmeter according to claim 1 is characterized in that: adopt mechanical seal between the inner chamber of said thin axle axle body and coreless armature.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201892197U CN202533116U (en) | 2012-04-28 | 2012-04-28 | Electromagnetic flowmeter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201892197U CN202533116U (en) | 2012-04-28 | 2012-04-28 | Electromagnetic flowmeter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202533116U true CN202533116U (en) | 2012-11-14 |
Family
ID=47134294
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012201892197U Expired - Fee Related CN202533116U (en) | 2012-04-28 | 2012-04-28 | Electromagnetic flowmeter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202533116U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108444556A (en) * | 2018-04-16 | 2018-08-24 | 西南石油大学 | A kind of design method of high-accuracy electromagnetic flowmeter |
| CN109405900A (en) * | 2017-08-18 | 2019-03-01 | 上海凡宜科技电子有限公司 | The electromagnetic flowmeter of adjustable electrode structure position |
| CN111630352A (en) * | 2019-11-04 | 2020-09-04 | 深圳市大疆创新科技有限公司 | Electromagnetic flowmeter, sprinkling system and unmanned aerial vehicle |
-
2012
- 2012-04-28 CN CN2012201892197U patent/CN202533116U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109405900A (en) * | 2017-08-18 | 2019-03-01 | 上海凡宜科技电子有限公司 | The electromagnetic flowmeter of adjustable electrode structure position |
| CN109405900B (en) * | 2017-08-18 | 2020-12-11 | 上海凡宜科技电子有限公司 | Electromagnetic flowmeter capable of adjusting electrode structure position |
| CN108444556A (en) * | 2018-04-16 | 2018-08-24 | 西南石油大学 | A kind of design method of high-accuracy electromagnetic flowmeter |
| CN111630352A (en) * | 2019-11-04 | 2020-09-04 | 深圳市大疆创新科技有限公司 | Electromagnetic flowmeter, sprinkling system and unmanned aerial vehicle |
| WO2021087653A1 (en) * | 2019-11-04 | 2021-05-14 | 深圳市大疆创新科技有限公司 | Electromagnetic flowmeter, spraying system and unmanned aerial vehicle |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121114 Termination date: 20130428 |