CN2418481Y - Magnetic liquid suspension accelerometer - Google Patents
Magnetic liquid suspension accelerometer Download PDFInfo
- Publication number
- CN2418481Y CN2418481Y CN 00209576 CN00209576U CN2418481Y CN 2418481 Y CN2418481 Y CN 2418481Y CN 00209576 CN00209576 CN 00209576 CN 00209576 U CN00209576 U CN 00209576U CN 2418481 Y CN2418481 Y CN 2418481Y
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- CN
- China
- Prior art keywords
- magnetic liquid
- liquid suspension
- king
- magnet steel
- skeleton
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Abstract
The utility model provides a magnetic liquid suspension accelerometer, which is mainly composed of a shell body, an upper cover, a rubber cap, a pressing ring, a winding group, a skeleton, a magnetic steel, an end cover, a solenoid, and magnetic liquid, wherein, the magnetic steel is arranged in a shaft hole arranged in the middle of the skeleton; a closed circuit is full of magnetic liquid, and the closed circuit is formed by the shell body and the interior of the skeleton. The utility model has the characteristics of strong shock resistance, small structure, simple assembling, low cost, and high accuracy which is about one thousandth. The utility model is used for drilling and measuring aspects, which has good comprehensive performance.
Description
The utility model relates to a kind of surveying instrument, especially relates to the accelerometer that a kind of well logging, drilling measuring are used.
The magnetic liquid suspension accelerometer is the surveying instrument that gos deep into the underground survey accekeration with drill bit.Existing magnetic liquid suspension accelerometer, part is more, and assembling is complicated, and volume is bigger than normal, and its combination property is not ideal.
The purpose of this utility model is at the problems referred to above, provides a kind of combination property good magnetic liquid suspension accelerometer.
For achieving the above object, the utility model provides following technical scheme: a kind of magnetic liquid suspension accelerometer, and it comprises: housing, loam cake, Capsule, pressure ring, two windings, king's font skeleton, magnet steel, two end caps, two screwed pipes, magnetic liquid, the top and screw of sealing; Described housing is last, and the accumbency of king's font skeleton connects with two screwed pipes between the two down; Be provided with a through hole in the middle of the described loam cake, described Capsule is arranged between pressure ring and the loam cake, and three and inner walls adopt the size wringing fit; Be provided with axis hole in the middle of described king's font skeleton, described magnet steel is arranged in the axis hole, and described end cap is arranged on the axis hole two ends; Described magnetic liquid riddles enclosure interior and the inner closed-loop path that forms of king's font skeleton; Described housing side is provided with a sealing and use threaded hole, seals top and screw and is positioned at wherein.
The principle of work of accelerometer of the present utility model is: on the one hand, magnet steel is placed in the king's font skeleton axis hole that is full of magnetic liquid, magnetic in the magnetic liquid is attached to the magnet steel two ends, form dumbbell shaped, magnetic more spheroidite in two ends holds up magnet steel, it can be moved freely in axis hole, reduced the friction force that gravity causes.On the other hand, magnetic liquid is providing system stability required damping.Two windings on king's font skeleton all have the effect of displacement transducer and feedback force generator concurrently.When not having external acceleration, magnet steel is in mechanical zero, and the inductance of two windings is identical, so bridge balance, and it is output as zero, and accelerometer is not output also.When acceleration acted on the magnet steel axis, the inductance one of two windings of magnet steel displacement causing increased one and subtracts, and unbalance voltage occurs, this voltage produces electromagnetic force through before putting, after the demodulation, power amplifier, being input to two windings through feedback current, act on the magnet steel, stop the magnet steel displacement.
Accelerometer of the present utility model has the following advantages:
1, impact resistance is strong;
2, reasonable in design, small and exquisite;
3, assembling is simple;
4, cost is low;
5, precision generally about 1 ‰, is applicable to the requirement of well logging, drilling measuring.
Below in conjunction with drawings and Examples, further specify the utility model.
Fig. 1 is the wiring layout of magnetic liquid suspension accelerometer;
Fig. 2 is that cut-open view is looked on the left side of Fig. 1.
Fig. 1 and Fig. 2 illustrate the structure of magnetic liquid suspension accelerometer of the present utility model.See figures.1.and.2, accelerometer of the present utility model is made up of housing 5, loam cake 4, Capsule 10, pressure ring 6, two windings 12, king's font skeleton 7, magnet steel 1, two end caps 2, two screwed pipes 3, magnetic liquid 11, sealing top 9 and screws 8.As shown in the figure, housing 5 is descending in last, 7 accumbency of king's font skeleton, and both junctions are provided with the hole, connect with screwed pipe 3; Be provided with a through hole 41 in the middle of the loam cake 4, Capsule 10 is arranged between pressure ring 6 and the loam cake 4, and three and housing 5 inwalls adopt the size interference fit; Be provided with axis hole 71 in the middle of king's font skeleton 7, magnet steel 1 is arranged in the axis hole 71, and end cap 2 is distributed in axis hole 71 two ends, adopts the size interference fit between the latter, so that sealing; Through hole 31 in the middle of housing 5, loam cake 4, Capsule 10, the screwed pipe 3 and the axis hole of king's font skeleton 7 71 form a closed-loop path, and magnetic liquid 11 is full of wherein; Housing 5 sides are provided with a sealing with threaded hole 51, seal top 9 and screw 8 be positioned at wherein.Magnetic liquid 11 injects this device by threaded hole 51.
In the such scheme, the shape of magnet steel 1 can be cylindrical.
In the such scheme, can extend a buttress shaft 21 in the middle of the end cap 2, so that the formed magnetic sphere in magnet steel 1 two ends is not destroyed.
In the such scheme, each part mating surface adopts size interference fit or threaded engagement, adopts gluing bonding again, to strengthen sealing and anti-impact force.
Before the use, switch in two windings 12 magnetic field of generation and the magnetic field balance of magnet steel 1.During use, this device gos deep into the down-hole with drill bit, when magnet steel 1 is subjected to external acceleration, and magnet steel 1, produce displacement, the inductance that causes two windings 12 changes, and one increases one subtracts, and unbalance voltage occurs, after amplifying, circuit can measure accekeration, be input to two windings through feedback current, produce electromagnetic force and can act on again on the magnet steel 1, resistance upper magnetic steel 1 further is shifted.
Claims (4)
1, a kind of magnetic liquid suspension accelerometer is characterized in that it comprises: housing, loam cake, Capsule, pressure ring, two windings, king's font skeleton, magnet steel, two end caps, two screwed pipes, magnetic liquid, the top and screw of sealing; Described housing is last, and the accumbency of king's font skeleton connects with two screwed pipes between the two down; Be provided with a through hole in the middle of the described loam cake, described Capsule is arranged between pressure ring and the loam cake, and three and inner walls adopt the size wringing fit; Be provided with axis hole in the middle of described king's font skeleton, described magnet steel is arranged in the axis hole, and described end cap is arranged on the axis hole two ends; Described magnetic liquid riddles enclosure interior and the inner closed-loop path that forms of king's font skeleton; Described housing side is provided with a sealing and use threaded hole, seals top and screw and is positioned at wherein.
2, magnetic liquid suspension accelerometer according to claim 1 is characterized in that described magnet steel is cylindrical.
3, magnetic liquid suspension accelerometer according to claim 1 is characterized in that extending a buttress shaft in the middle of the described end cap.
4, according to claim 1,2 or 3 described magnetic liquid suspension accelerometers, it is characterized in that described each part mating surface adopt size close-fitting merge gluing bonding or be threaded and gluing bonding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00209576 CN2418481Y (en) | 2000-04-18 | 2000-04-18 | Magnetic liquid suspension accelerometer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00209576 CN2418481Y (en) | 2000-04-18 | 2000-04-18 | Magnetic liquid suspension accelerometer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2418481Y true CN2418481Y (en) | 2001-02-07 |
Family
ID=33576656
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 00209576 Expired - Lifetime CN2418481Y (en) | 2000-04-18 | 2000-04-18 | Magnetic liquid suspension accelerometer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2418481Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102650649A (en) * | 2011-02-28 | 2012-08-29 | 北京中联博韬科技咨询有限公司 | Accelerometer |
| CN107478863A (en) * | 2016-06-08 | 2017-12-15 | 霍尼韦尔国际公司 | The biasing in accelerometer is reduced via current regulation |
-
2000
- 2000-04-18 CN CN 00209576 patent/CN2418481Y/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102650649A (en) * | 2011-02-28 | 2012-08-29 | 北京中联博韬科技咨询有限公司 | Accelerometer |
| CN102650649B (en) * | 2011-02-28 | 2014-08-20 | 北京中联博韬科技咨询有限公司 | Accelerometer |
| CN107478863A (en) * | 2016-06-08 | 2017-12-15 | 霍尼韦尔国际公司 | The biasing in accelerometer is reduced via current regulation |
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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 | ||
| CX01 | Expiry of patent term |
Granted publication date: 20010207 |
|
| DD01 | Delivery of document by public notice |
Addressee: Beijing Hailan Science & Technology Development Co., Ltd. Document name: Notification of Expiration of Patent Right Duration |