CN100498327C - Process of machining dumbbell ball for magnetomotive oxygen measuring instrument - Google Patents
Process of machining dumbbell ball for magnetomotive oxygen measuring instrument Download PDFInfo
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- CN100498327C CN100498327C CNB2007100086708A CN200710008670A CN100498327C CN 100498327 C CN100498327 C CN 100498327C CN B2007100086708 A CNB2007100086708 A CN B2007100086708A CN 200710008670 A CN200710008670 A CN 200710008670A CN 100498327 C CN100498327 C CN 100498327C
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- magnetomotive
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- measuring instrument
- machining
- oxygen measuring
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Abstract
The present invention relates to manufacture of oxygen measuring instrument, and is especially process of producing dumbbell ball for magnetomotive oxygen measuring instrument. The dumbbell ball is one ball filled with nitrogen, one layer of electrically conducting and antimagnetic metal film coated in the outer surface, and several etched independent film rings coaxial with the perpendicular line. The rings is etched optically, mechanically or chemically. The present invention has the advantages of simple production process, high measurement precision, etc.
Description
Technical field: the present invention relates to the oxygen analyser manufacturing process, particularly the job operation of dumbbell ball.
Prior art: the core of magnetomotive oxygen measuring instrument is a dumbbell ball platinum filament mirror system, being about to a pair of dumbbell ball is suspended in the non-homogeneous gradient magnetic with platinum filament, the dumbbell ball will be subjected to the rotating torque effect and rotate around suspension, by the measurement of angle that the dumbbell ball is reversed, can determine the oxygen level in the gas.Can wave difficult ending because of rotator inertia during the magnetic field force induced effect rotation of the dumbbell ball that is suspended in midair by platinum filament, need just can stop on the equilibrium position for a long time.For response, the Measuring Time that shortens instrument, need the rotary damping scheme of design dumbbell ball.For response, the Measuring Time that shortens instrument, fill nitrogen bead outside around 3 circle wire coils at two usually, to increase damping.It is very small and exquisite filling the nitrogen bead, and diameter is usually between 3～5mm.Around this wire coil is not easy to do, and practical operation processing settles exigent skill technology.Fixing metal coil on 3～5mm diameter, at first need this wire diameter very little, and the small diameter metal wires rigidity is very little, when making this wire coil since the too little very difficult assurance annulus of rigidity everywhere curvature all equate, and be fixed in the positioning process on nitrogen ball surface, be again can't guarantee the operation that wire coil and bead surface are close to fully together.Make, the location two procedures can't guarantee curvature all and, can't guarantee to be close to fully with the bead surface, then make the rotating torque of dumbbell ball be subjected to airflow influence, make the measuring accuracy of the variable effect of air-flow to instrument.
Summary of the invention: the objective of the invention is to overcome above-mentioned defective, a kind of process of machining dumbbell ball for magnetomotive oxygen measuring instrument is provided.
The invention scheme: filling the good diamagnetic metallic film of nitrogen ball outside coating one deck electric conductivity, then go out a few circle separate closing torus membranes in the ball surface etch, the axial line of this torus membrane overlaps with plumb line.
The invention advantage is to adopt this technology, the simple and curvature of processing all with, do not need very high operation, erection skill, be convenient to batch process.Improved simultaneously the influence of variation to measuring of gas flow effectively, measuring accuracy improves, and can guarantee gas flow in≤0.5L/min scope, and instrument readings is identical.And the scheme of damping is realized around the metal wire ring in employing bead outside, can only guarantee gas flow in＜0.1L/min scope, and instrument readings is identical, when gas flow increases near 0.5L/min, because of the dumbbell ball rocks, makes reading be difficult to stablize.
Description of drawings: Fig. 1 is the magnetomotive oxygen measuring instrument structural representation.
Fig. 2 is the dumbbell ball for magnetomotive oxygen measuring instrument structural representation.
Embodiment: the present invention adopts the plated film lithographic method to the spherical two nitrogen ball surface metal ring installation and processing method of dumbbell.Filling the good diamagnetic metallic film of nitrogen ball outside coating one deck electric conductivity, then go out a few circle separate closing torus membranes in the ball surface etch, the axial line of this torus membrane overlaps with plumb line.Lithographic method has multiple, photoetching is to depict loop line more than the twice in metallic film surface with laser, and this loop line separates online both sides with metal film, then faces mutually to form the annulus film between the twice loop line, for example if want four annulus films, as long as then depict five road loop lines; Machine engraving is to utilize mould to carve loop line more than the twice in the metal surface; It is to portray the annulus external surface coating that chemistry is carved, and then with chemical mordant the outer metal film chemical reaction of coating is removed.
In order to protect these film rings, smear one deck insulation and moisture medium at skin after the annulus etching.
This method is easy to process, while becket rule, the film height of projection is small, improved the influence of variation to measuring of gas flow effectively, can guarantee gas flow in≤0.5L/min scope, instrument readings is identical, and adopts the bead outside to realize the scheme of damping around a circle tinsel, can only guarantee gas flow in≤0.1L/min scope, instrument readings is identical.
Diamagnetic metal can be metals such as copper, silver, chromium, dumbbell ball system rotating torque in non-uniform magnetic-field is increased, can improve the sensitivity of instrument, and annulus plated film tool satisfactory electrical conductivity, the electromagnetic force that its closed circuit produces in the variation magnetic field causes that dumbbell rotates the additional damping that produces, shorten the response measurement time, thereby receive the variation that its catoptron corner quantizes, reflect oxygen level by the cpu model computing again by electrooptical device.
Claims (5)
1, process of machining dumbbell ball for magnetomotive oxygen measuring instrument is characterized in that then going out a few circle separate closing torus membranes in the ball surface etch filling the good diamagnetic metallic film of nitrogen ball outside coating one deck electric conductivity, and the axial line of this torus membrane overlaps with plumb line.
2, process of machining dumbbell ball for magnetomotive oxygen measuring instrument according to claim 1 is characterized in that etching is photoetching, and photoetching is to depict loop line more than the twice in metallic film surface with laser.
3, process of machining dumbbell ball for magnetomotive oxygen measuring instrument according to claim 1 is characterized in that etching is machine engraving, and machine engraving is to utilize mould to carve loop line more than the twice in the metal surface.
4, process of machining dumbbell ball for magnetomotive oxygen measuring instrument according to claim 1 is characterized in that etching is that chemistry is carved, and it is to portray the annulus external surface coating that chemistry is carved, and then with chemical mordant the outer metal film chemical reaction of coating is removed.
5, process of machining dumbbell ball for magnetomotive oxygen measuring instrument according to claim 1 is characterized in that smearing one deck insulation and moisture medium at skin after the annulus etching.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007100086708A CN100498327C (en) | 2007-03-09 | 2007-03-09 | Process of machining dumbbell ball for magnetomotive oxygen measuring instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007100086708A CN100498327C (en) | 2007-03-09 | 2007-03-09 | Process of machining dumbbell ball for magnetomotive oxygen measuring instrument |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101046465A CN101046465A (en) | 2007-10-03 |
| CN100498327C true CN100498327C (en) | 2009-06-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNB2007100086708A Active CN100498327C (en) | 2007-03-09 | 2007-03-09 | Process of machining dumbbell ball for magnetomotive oxygen measuring instrument |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2477575B (en) * | 2010-02-09 | 2012-02-08 | Servomex Group Ltd | Apparatus and methods for imbalance compensation |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3881152A (en) * | 1973-09-19 | 1975-04-29 | Akira Tasaki | Method and device for measuring oxygen partial pressure |
| US4807463A (en) * | 1986-10-03 | 1989-02-28 | M & C Products Analysentechnik Gmbh | Oxygen measuring cell |
| US5932794A (en) * | 1996-09-18 | 1999-08-03 | Hartman & Braun Gmbh & Co. Kg | Instrument for magnetic measurement of oxygen |
| US6246227B1 (en) * | 1997-12-24 | 2001-06-12 | James Hobby | Sensor for measuring the magnetic characteristics of a gas |
| US6263722B1 (en) * | 1998-09-12 | 2001-07-24 | Hartmann & Braun Gmbh & Co. Kg | Magnetomechanical gas analyzer, in particular paramagnetic oxygen analyzer |
| DE10010914C1 (en) * | 1998-09-12 | 2001-10-11 | Abb Patent Gmbh | Magnetomechanical gas analyzer, in particular paramagnetic oxygen analyzer |
| CN2781366Y (en) * | 2005-04-28 | 2006-05-17 | 北京印刷学院 | Magnetomotive oxygen analyser with self-feedback damping buffer stablizer |
| CN2833587Y (en) * | 2005-06-20 | 2006-11-01 | 重庆川仪总厂有限公司重庆川仪九厂 | Magnetomechanical oxygen sensor |
-
2007
- 2007-03-09 CN CNB2007100086708A patent/CN100498327C/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3881152A (en) * | 1973-09-19 | 1975-04-29 | Akira Tasaki | Method and device for measuring oxygen partial pressure |
| US4807463A (en) * | 1986-10-03 | 1989-02-28 | M & C Products Analysentechnik Gmbh | Oxygen measuring cell |
| US5932794A (en) * | 1996-09-18 | 1999-08-03 | Hartman & Braun Gmbh & Co. Kg | Instrument for magnetic measurement of oxygen |
| US6246227B1 (en) * | 1997-12-24 | 2001-06-12 | James Hobby | Sensor for measuring the magnetic characteristics of a gas |
| US6263722B1 (en) * | 1998-09-12 | 2001-07-24 | Hartmann & Braun Gmbh & Co. Kg | Magnetomechanical gas analyzer, in particular paramagnetic oxygen analyzer |
| DE10010914C1 (en) * | 1998-09-12 | 2001-10-11 | Abb Patent Gmbh | Magnetomechanical gas analyzer, in particular paramagnetic oxygen analyzer |
| CN2781366Y (en) * | 2005-04-28 | 2006-05-17 | 北京印刷学院 | Magnetomotive oxygen analyser with self-feedback damping buffer stablizer |
| CN2833587Y (en) * | 2005-06-20 | 2006-11-01 | 重庆川仪总厂有限公司重庆川仪九厂 | Magnetomechanical oxygen sensor |
Non-Patent Citations (4)
| Title |
|---|
| 探究磁动式测量气体氧含量. 魏茂金，赖森财，黄思俞，蔡少川.三明学院院报，第23卷第4期. 2006 |
| 探究磁动式测量气体氧含量. 魏茂金，赖森财，黄思俞，蔡少川.三明学院院报，第23卷第4期. 2006 * |
| 磁动式测氧传感器的研究. 魏茂金，蔡少川，赖森财，谢培庆，刘德功.云南大学学报(自然科学版)，第27卷第5A期. 2005 |
| 磁动式测氧传感器的研究. 魏茂金，蔡少川，赖森财，谢培庆，刘德功.云南大学学报(自然科学版)，第27卷第5A期. 2005 * |
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| CN101046465A (en) | 2007-10-03 |
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Owner name: WUHAN SIFANG PHOTOELECTRIC SCIENCE + TECHNOLOGY CO Free format text: FORMER OWNER: SANMING COLLEGE Effective date: 20110128 |
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Free format text: CORRECT: ADDRESS; FROM: 365004 NO.25, JINGDONG ROAD, SANYUAN DISTRICT, SANMING CITY, FUJIAN PROVINCE TO: 430074 10/F, BUILDING 6, GUANGGU VENTURE STREET, HONGSHAN DISTRICT, WUHAN CITY |
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Effective date of registration: 20110128 Address after: 430074, 10 floor, building 6, Optics Valley Pioneer Street, Hongshan District, Wuhan Patentee after: Wuhan Cubic Optoelectronics Co., Ltd. Address before: 365004 Fujian Province, Sanming City District, Jing Yuan Road, No. three, No. 25 Patentee before: Sanming College |
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Address after: 430205, No. three, No. 3, Fenghuang garden, Phoenix Industrial Park, East Lake New Technology Development Zone, Wuhan Patentee after: Wuhan Cubic Optoelectronics Co., Ltd. Address before: 430074, 10 floor, building 6, Optics Valley Pioneer Street, Hongshan District, Wuhan Patentee before: Wuhan Cubic Optoelectronics Co., Ltd. |
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Address after: 430025 No.3, Fenghuangyuan Third Road, Fenghuang Industrial Park, Donghu New Technology Development Zone, Wuhan City, Hubei Province Patentee after: Sifang Optoelectronic Co., Ltd. Address before: No. 3, Fenghuangyuan Third Road, Fenghuang Industrial Park, Donghu New Technology Development Zone, Wuhan Patentee before: Wuhan Cubic Optoelectronics Co., Ltd. |
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