CN103135077A - Simple device for testing magnetic field intensities - Google Patents
Simple device for testing magnetic field intensities Download PDFInfo
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- CN103135077A CN103135077A CN2011103802710A CN201110380271A CN103135077A CN 103135077 A CN103135077 A CN 103135077A CN 2011103802710 A CN2011103802710 A CN 2011103802710A CN 201110380271 A CN201110380271 A CN 201110380271A CN 103135077 A CN103135077 A CN 103135077A
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- magnetic field
- steel ball
- steel
- top plate
- test cylinder
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Abstract
The invention discloses a simple device for testing magnetic field intensities. A steel ball (1) is disposed in a test cylinder (2) made of organic glass or transparent plastic, and a top plate (3) made from a steel plate is arranged at an upper end port of the test cylinder (2). The diameter of the steel ball (1) is in a range of 10mm to 28mm. In another embodiment, the steel ball (1) is arranged at the upper end port of the test cylinder (2) to replace the top plate (3). The inner diameter of the test cylinder (2) is larger than the diameter of the steel ball by 2mm to 3mm. During usage, the simple device is placed at a position to be welded, the steel ball is contacted with the steel top plate if high-intensity magnetic fields exist, and then the steel ball is attracted to the steel top plate due to magnetism. Strong neodymium iron boron magnets and an original magnetic field approach to the test cylinder oppositely to offset and weaken the original magnetic field of an electrolytic cell. When the magnetic field is so weakened that the steel ball falls off the steel top plate and drops to the cylinder bottom, the magnetic field at a position of the test cylinder is weakened, and accordingly, the position can be welded. According to the simple device for testing magnetic field intensities, steels balls with different diameters can be used for manufacturing a series of steel balls and test cylinders, and different magnetic field intensities can be tested.
Description
Technical field
The present invention relates to a kind of device of surveying magnetic field intensity.
Background technology
The used for aluminium electrolysis DC current is carried out molten-salt electrolysis.Electrolytic tank is increasing now, and the electrolytic tank of largest domestic has been the strength of current of 500kA.Powerful electric current certainly leads to high-intensity magnetic field.Up to a hundred electrolytic tank series connection are arranged, if indivedual electrolytic tank damage of internal lining just need stop groove overhaul in potroom.When stopping groove, still have bus to pass from the bottom land that stops groove, at this moment, the magnetic field when wearing near the bus of bottom land magnetic field than normal electrolysis is stronger.Stopping in the groove overhaul process, have cathode steel bar to be welded to connect, is all electric arc welding by hand now.High-intensity magnetic field has the blow effect to welding arc, and the stronger blow in magnetic field is more severe, and the cathode steel bar that has of the above electrolytic tank of 300kA just almost cannot welding.Carry out in high-intensity magnetic field guaranteeing that the arc welding of welding quality is the difficult problem of aluminium industry always.
In taking measures to reduce the process in magnetic field, need to detect the magnetic field intensity of weld.Gaussmeter commonly used is exact instrument, on each 100,000 yuan, once have high input, and cost is high, is difficult to generally use.
Summary of the invention
The objective of the invention is: a kind of easy device of surveying magnetic field intensity is provided, and high to overcome the exact instrument price that prior art exists, investment is large, and cost is high, the deficiency such as is difficult to generally use.
The present invention is by the following technical solutions: be placed with steel ball in the test barrel that organic glass or transparent plastic are made, place in the upper port of test barrel the top board that adopts steel plate to make; Perhaps, place steel ball in the upper port of test barrel and substitute top board.
Steel ball size is 10 ~ 28mm.
Adopt plain carbon steel making steel ball and top board to get final product.Plain carbon steel is magnetic material, can attract each other in magnetic field.
Test barrel is done cylinder and base plate with organic glass or transparent plastic, and the internal diameter of cylinder than the large 2 ~ 3mm of steel ball, steel ball can freely be moved up and down in cylinder.Device of the present invention is put into the position that needs welding, if high-intensity magnetic field is arranged, allows steel ball touch the steel top board, steel ball just due to magnetic absorption on the steel top board., offset and weaken electrolytic tank original magnetic field on the contrary near test barrel with neodymium iron boron kicker magnet and former magnetic field.When field weakening is separated from the steel top board to steel ball, at the bottom of falling tin, just know that the field weakening at test barrel place is to having welded.
Adopt the steel ball size of different sizes to make a series of steel ball and test barrel, just can test different magnetic field intensitys.
Description of drawings
Fig. 1 is structural representation of the present invention, and the upper port of test barrel is placed the top board that adopts steel plate to make;
Fig. 2 is another structural representation of the present invention, places steel ball in the upper port of test barrel.
Embodiment
Embodiments of the invention:
Embodiment 1: as schematically shown in Figure 1, be placed with steel ball 1 in the test barrel 2 of organic glass or transparent plastic making, place in the upper port of test barrel 2 top board 3 that adopts steel plate to make.Adopt plain carbon steel making steel ball and top board to get final product.
Embodiment 2: as schematically shown in Figure 2, place steel ball 1 in the upper port of test barrel 2 and substitute top board 3, other are with embodiment 1.
The using method of the test barrel of Fig. 2 is similar with Fig. 1's.To the steel ball of same diameter, steel ball is less to the contact area of steel ball, so attractive force is less to the attractive force of steel ball than steel plate, the out of gear mesh magnetic field value of steel ball is also less.
This kind test barrel is simple in structure, tests intuitive and reliable.
Claims (4)
1. an easy device of surveying magnetic field intensity, is characterized in that: be placed with steel ball (1) in the test barrel (2) of organic glass or transparent plastic making, place in the upper port of test barrel (2) top board (3) that adopts steel plate to make.
2. the easy device of detection magnetic field intensity according to claim 1, it is characterized in that: steel ball (1) diameter is 10 ~ 28mm.
3. the easy device of detection magnetic field intensity according to claim 1, is characterized in that: place steel ball (1) in the upper port of test barrel (2) and substitute top board (3).
4. the easy device of detection magnetic field intensity according to claim 1, it is characterized in that: the internal diameter of test barrel (2) cylinder is than the large 2 ~ 3mm of steel ball size.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103802710A CN103135077A (en) | 2011-11-25 | 2011-11-25 | Simple device for testing magnetic field intensities |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103802710A CN103135077A (en) | 2011-11-25 | 2011-11-25 | Simple device for testing magnetic field intensities |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103135077A true CN103135077A (en) | 2013-06-05 |
Family
ID=48495164
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011103802710A Pending CN103135077A (en) | 2011-11-25 | 2011-11-25 | Simple device for testing magnetic field intensities |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103135077A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1034807A (en) * | 1988-01-11 | 1989-08-16 | 巴斯福油漆和颜料股份公司 | Measure the apparatus and method of viscosity of material |
| EP0778468A2 (en) * | 1995-12-05 | 1997-06-11 | Mitsubishi Denki Kabushiki Kaisha | Display apparatus for magnetic field |
| EP1731916A1 (en) * | 2005-06-07 | 2006-12-13 | IEE INTERNATIONAL ELECTRONICS & ENGINEERING S.A. | Magnetic field sensor |
| CN101245926A (en) * | 2008-03-14 | 2008-08-20 | 陈梓平 | Power supply switch suitable for planar stove face electric heating stove |
| CN202330678U (en) * | 2011-11-25 | 2012-07-11 | 贵阳铝镁设计研究院有限公司 | Simple device for detecting intensity of magnetic field |
-
2011
- 2011-11-25 CN CN2011103802710A patent/CN103135077A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1034807A (en) * | 1988-01-11 | 1989-08-16 | 巴斯福油漆和颜料股份公司 | Measure the apparatus and method of viscosity of material |
| EP0778468A2 (en) * | 1995-12-05 | 1997-06-11 | Mitsubishi Denki Kabushiki Kaisha | Display apparatus for magnetic field |
| EP1731916A1 (en) * | 2005-06-07 | 2006-12-13 | IEE INTERNATIONAL ELECTRONICS & ENGINEERING S.A. | Magnetic field sensor |
| CN101245926A (en) * | 2008-03-14 | 2008-08-20 | 陈梓平 | Power supply switch suitable for planar stove face electric heating stove |
| CN202330678U (en) * | 2011-11-25 | 2012-07-11 | 贵阳铝镁设计研究院有限公司 | Simple device for detecting intensity of magnetic field |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20130605 |