CN202710119U - Magnetic shielding type turbine flow converter - Google Patents
Magnetic shielding type turbine flow converter Download PDFInfo
- Publication number
- CN202710119U CN202710119U CN 201220161777 CN201220161777U CN202710119U CN 202710119 U CN202710119 U CN 202710119U CN 201220161777 CN201220161777 CN 201220161777 CN 201220161777 U CN201220161777 U CN 201220161777U CN 202710119 U CN202710119 U CN 202710119U
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- turbine flow
- flow converter
- double
- magnetic shielding
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Abstract
The utility model discloses a magnetic shielding type turbine flow converter which comprises a shell. A double-layer cylindrical shielding layer is fixed in the shell through positioning clamping grooves, a framework is installed in the double-layer cylindrical shielding layer, a coil is wound on the framework, lead wires of the coil are led out through copper pillar terminals on the framework, a magnet conductive iron core is plugged into the center of the framework, and therefore a magnetic circuit is formed. In addition, all gaps inside the whole device are filled with resin. The magnetic shielding type turbine flow converter has the advantages that the design of double-layer shielding is adopted and shielding effect is good.
Description
Technical field
The utility model relates to the flow measurement field, particularly a kind of magnetic shielding formula turbine flow converter.
Background technology
Turbo flow meter mainly is comprised of flow sensor and flow converter two parts according to wheel speed and the proportional principle measuring flow of rate of flow of fluid.The core of flow sensor is commonly called as movement, is comprised of impeller, bearing and support etc., and wheel speed is directly proportional with flow velocity; The major function of flow converter is that the tach signal with impeller is converted to electric signal, and becomes to send and be standard signal, such as outputs such as TTL pulse, 4-20mA or RS485 signals.
Variable reluctance turbine flow converter is at present most popular a kind of owing to simple in structure, with low cost.Impeller blade based on this principle turbo flow meter is made by permeability magnetic material, in the external magnetic test coil of sensor shell permanent magnetic material is housed, when vane rotary, the magnetic circuit that permanent magnetic material forms in the coil approach because of the magnetic conduction blade alternate or away from, the variation of magnetic flux generating period, the equiva lent impedance of coil produces continuous pulsating wave also along with variation at two terminals of coil, and its cycle and rotating speed are proportional.
Variable reluctance turbine flow converter is based on electromagnetic induction principle, the essence of testing process is that the magnetic flux that changes in the cycle produces the induced electromotive force that changes with the cycle at the inductive coil two ends, therefore being subject to space alternating magnetic field, particularly coil axes is its disadvantage to the impact of alternating magnetic field.Be embodied in, when having the powerful device such as motor, frequency converter and big caliber electromagnetic valve when the flowmeter erecting stage, the phenomenon that without flow converter has reading often occur in the pipeline.Although the magnetic shielding cover structure effect that patent 200720148544.8 proposes is remarkable, need to be with the whole encirclement of instrument, cost is high, and volume is large, and a lot of site space are limited, are unfavorable for installing.
Summary of the invention
The purpose of this utility model is in order to address the above problem, to have designed a kind of magnetic shielding formula turbine flow converter.
Realize that the above-mentioned purpose the technical solution of the utility model is, a kind of magnetic shielding formula turbine flow converter, comprise shell, be fixed with double-layer circular tubular screen layer by locating groove in the shell, mounting framework in the double tubular screen layer, coil winding are on skeleton, and coil lead is drawn through copper styletable on the skeleton, conducting magnet core inserts frame center and forms flux path, and resin filling is all used in the inner space of whole device.
Described conducting magnet core is by iron nail, is placed on the magnet steel of iron nail upper surface and is enclosed within the structure that the iron nail lower surface consists of jointly for the disk with holes of locating.
The internal layer of described double-layer circular tubular screen layer is made of high permeability material, and the skin of double-layer circular tubular screen layer is to adopt the alloy material that can weaken magnetic flux to make.
Described high permeability material is permalloy.
Described alloy material is 48 Rhometals.
The magnetic shielding formula turbine flow converter that utilizes the technical solution of the utility model to make adopts the double-layered cylinder structure on the structure, compare with the individual layer cylinder that same material is made, and shield effectiveness is better.Simultaneously do not increase gross thickness, weight is lighter.
Description of drawings
Fig. 1 is the structural representation of magnetic shielding formula turbine flow converter described in the utility model; Among the figure, 1, shell; 2, resin; 3, magnet steel; 4, coil; 5, skeleton; 6, conducting magnet core; 7, disk with holes; 8, copper styletable; 9, the skin of double-layer circular tubular screen layer; 10, the internal layer of double-layer circular tubular screen layer; 11, iron nail.
Embodiment
Below in conjunction with accompanying drawing the utility model is specifically described, the structural representation of magnetic shielding formula turbine flow converter described in the utility model such as Fig. 1, as shown in the figure, a kind of magnetic shielding formula turbine flow converter, comprise shell 1, be fixed with double-layer circular tubular screen layer by locating groove in the shell, mounting framework 5 in the double tubular screen layer, coil 4 is wrapped on the skeleton, coil lead is drawn through copper styletable 8 on the skeleton, conducting magnet core 6 inserts frame center and forms flux path, and the inner space of whole device all uses resin 2 to fill.Wherein, described conducting magnet core is by iron nail 11, is placed on the magnet steel 3 of iron nail upper surface and is enclosed within the structure that the iron nail lower surface consists of jointly for the disk with holes 7 of locating; The internal layer 10 usefulness high permeability materials of described double-layer circular tubular screen layer are made, and the skin 9 of double-layer circular tubular screen layer is to adopt the alloy material that can weaken magnetic flux to make; Described high permeability material is permalloy; Described alloy material is 48 Rhometals.
The characteristics of the technical program are that the double layer screen layer that utilizes high permeability material and alloy material to make is installed by section in the enclosure.Because the cylinder screen layer magnetoconductivity of high magnetic conductive material is apparently higher than air or other medium material, therefore pass through from the lower screen layer of magnetic resistance from the axial magnetic field major part of space outerpace, and can not pass through iron core, therefore can not cause the variation of iron core useful flux interference phenomenon to occur.In addition, the magnetic flux that useful signal produces is compared with external disturbance, and is nearer apart from iron core, and the position is just in time at the iron nail center, so screen layer can not cause useful signal " shunting ".
Double-layered cylinder structure internal layer uses high permeability material, the outer alloy material that can weaken larger magnetic flux that adopts.Generally high permeability materials magnetic property cold rolling or machining will weaken, and for fear of the generation of this situation, after these materials are carried out roll bending, need annealed technique to recover its magnetic property.
Technique scheme has only embodied the optimal technical scheme of technical solutions of the utility model; some changes that those skilled in the art may make some part have wherein all embodied principle of the present utility model, belong within the protection domain of the present utility model.
Claims (5)
1. magnetic shielding formula turbine flow converter, comprise shell (1), it is characterized in that, be fixed with double-layer circular tubular screen layer by locating groove in the shell, mounting framework in the double tubular screen layer (5), coil (4) is wrapped on the skeleton, and coil lead is drawn through of the copper styletable on the skeleton (8), conducting magnet core (6) inserts frame center and forms flux path, and the inner space of whole device all uses resin (2) to fill.
2. magnetic shielding formula turbine flow converter according to claim 1, it is characterized in that described conducting magnet core is by iron nail (11), is placed on the magnet steel (3) of iron nail upper surface and is enclosed within the common structure that consists of of disk with holes (7) that the iron nail lower surface is used for the location.
3. magnetic shielding formula turbine flow converter according to claim 1, it is characterized in that, the internal layer (10) of described double-layer circular tubular screen layer is made of high permeability material, and the skin (9) of double-layer circular tubular screen layer is to adopt the alloy material that can weaken magnetic flux to make.
4. magnetic shielding formula turbine flow converter according to claim 3 is characterized in that described high permeability material is permalloy.
5. magnetic shielding formula turbine flow converter according to claim 3 is characterized in that described alloy material is 48 Rhometals.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220161777 CN202710119U (en) | 2012-04-17 | 2012-04-17 | Magnetic shielding type turbine flow converter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220161777 CN202710119U (en) | 2012-04-17 | 2012-04-17 | Magnetic shielding type turbine flow converter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202710119U true CN202710119U (en) | 2013-01-30 |
Family
ID=47590410
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220161777 Expired - Lifetime CN202710119U (en) | 2012-04-17 | 2012-04-17 | Magnetic shielding type turbine flow converter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202710119U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106253696A (en) * | 2016-08-25 | 2016-12-21 | 中国科学院地质与地球物理研究所 | A kind of electromagnetics transmitter |
| CN116698140A (en) * | 2023-08-08 | 2023-09-05 | 四川新川航空仪器有限责任公司 | Magneto-electric flow sensor and flow measurement method |
-
2012
- 2012-04-17 CN CN 201220161777 patent/CN202710119U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106253696A (en) * | 2016-08-25 | 2016-12-21 | 中国科学院地质与地球物理研究所 | A kind of electromagnetics transmitter |
| CN106253696B (en) * | 2016-08-25 | 2018-06-22 | 中国科学院地质与地球物理研究所 | A kind of electromagnetics transmitter |
| CN116698140A (en) * | 2023-08-08 | 2023-09-05 | 四川新川航空仪器有限责任公司 | Magneto-electric flow sensor and flow measurement method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130130 |
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| CX01 | Expiry of patent term |