CN202453509U - Velocity type magnetoelectric seismic detector - Google Patents
Velocity type magnetoelectric seismic detector Download PDFInfo
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- CN202453509U CN202453509U CN2011204981978U CN201120498197U CN202453509U CN 202453509 U CN202453509 U CN 202453509U CN 2011204981978 U CN2011204981978 U CN 2011204981978U CN 201120498197 U CN201120498197 U CN 201120498197U CN 202453509 U CN202453509 U CN 202453509U
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Abstract
The utility model discloses a velocity type magnetoelectric seismic detector, which mainly comprises a cylindrical casing with two non-magnetic conductive ends and a magnetic conductive cylindrical body, a set of permanent magnetism components, a device, a coil component and a leaf spring device, wherein one end of each magnetic shoe is connected with one end of a steel magnet; the device is used for assembling the permanent magnetism components into the cylindrical casing with an annular space left between the permanent magnetism components and the casing, so as to establish a magnetic field in the annular space between the pole shoe and the cylindrical casing; the coil component is provided with two coils which are coiled with a wire and axially spaced at an interval; and the leaf spring device is used for hanging the coil components in the annular space. The velocity type magnetoelectric seismic detector disclosed by the utility model can remarkably reduce the harmonic distortion of the output signals of the seismic detector, and can provide the leaf spring system with good linearity.
Description
Technical field
The utility model relates to a kind of speed-type geophone, is used for 3D seismic data acquisition technique field.
Background technology
Seismoreceiver is that a kind of being used for converts seismic energy to the corresponding voltage of seimic wave velocity sensor.This voltage signal is through after accepting the processing of instrument process seismic data, in order to architectonic position under the face of land of prediction reflection seismic energy.The voltage signal that seismoreceiver produces mainly receives and arrogantly jolts and the influence of the distortion of harmonic distortion.
The earth jolt be along or the surface wave energy propagated near the face of land.The layout of focus and seismoreceiver, frequency filtering and method of superposition all can be used to reduce the effect of jolting of the earth.The layout of focus and seismoreceiver (being called the space array again) is arranged to get rid of the accumulation that the earth jolts by special.This technology is quite effective in the two-dimension earthquake data acquisition, but then invalid to the 3D seismic data collection.The remaining the earth minimization technology of jolting is the post-processing technology of data acquisition, and it is more effective to the two-dimension earthquake data.The harmonic distortion that seismoreceiver causes has suppressed these data acquisition post-processing technologies and has eliminated the effect of the earth aspect jolting.
Harmonic distortion can produce a kind of nonlinear distortion that harmonic wave is a characteristic with an incoming frequency.The crowd generally acknowledges; The nonlinearity of the spring leaf of seismoreceiver and the heterogeneity in magnetic field are the reasons that produces harmonic distortion; Thereby through developed more than several kinds with the structure of geophone spring sheet, attempt to reduce the generation of extra harmonic wave, though reducing aspect the harmonic distortion more or less effect; But the reed of development design newly can not be dealt with problems fully, and residual distortion still has tangible influence to the resolution of input signal.The good spring leaf system of the linearity mixes uniform wide magnetic field again, can the distortion of wave detector be dropped to minimumly, better satisfies the needs that physical prospecting is gathered.As stated, this influence in 3D seismic data than much more obvious in the two-dimension earthquake data.Because industrial development direction is to gather 3D seismic data, it is more important that this problem just becomes, because can collect the information under the more relevant face of land in such data collection period.
Summary of the invention
One of purpose of the utility model provides a kind of speed type magnetoelectric seis; To solve in the annular space of seismoreceiver between magnetic boots and shell two uniform magnetic fields are provided; This magnetic field be wider than on the shake wave detector coil block around coil, thereby reduce the technical matterss such as harmonic distortion in the seismoreceiver output signal significantly.
Another purpose of the utility model provides a kind of speed type magnetoelectric seis; Spring leaf system to solve seismoreceiver has good linearty; Produce the linear output of high resolving power signal when coil is moved therein, promptly it produces technical matterss such as less harmonic wave mistake value to seismic input.
Another purpose of the utility model provides a kind of speed type magnetoelectric seis, to improve seismoreceiver physical dimension, makes its bigger and length meet the seismoreceiver of industrial standard.
The utility model realizes that the technical scheme of foregoing invention purpose is following:
A kind of speed type magnetoelectric seis mainly comprises:
The non-magnetic conduction in two ends, the cylinder blanket of cylindrical shell magnetic conduction;
One cover permanent magnetism module, permanent magnetism module comprise having coercive force greater than 11500 oersteds and the remanence cylindrical magnet steel and the cylindrical magnetic boots that are positioned at the magnet steel opposite end greater than 12800 Gausses, and an end of every magnetic boots and a termination of magnet steel are closed; This permanent magnetism module is contained in the cylinder blanket, makes between permanent magnetism module and shell and leaves annular space;
Coil block; This coil block comprises: be suspended on the spring leaf device in the annular space with two of the lead coiled at coil axially separated by a distance and with said coil; The length that is shorter in length than each pole shoe of each coil; The length of each coil is 0.85 to the length ratio of each pole shoe at least, and pole shoe length is 1.2 to the magnet steel length ratio, and the length that is inconjunction with the magnet steel of two pole shoes is 0.63 to the cylinder blanket length ratio.
Said magnet steel is manufactured by rare earth material, and rare earth material is selected neodymium iron boron for use, nickel plating on rare earth material, copper, nickel clad.
Coil is suspended on the spring leaf device in the annular space; The upper and lower spring leaf that comprises fixed coil assembly upper and lower end; Ring is three sway brace structures in the spring leaf of this upper and lower spring leaf; This three sway brace evenly distributes along circumference, the thick architectural feature in two ends that the most carefully is connected with entity in the middle of the spring leaf muscle of three sway braces has.
The width dimensions ratio of the most carefully locating width dimensions and thick place, spring leaf muscle two ends in the middle of the spring leaf muscle of said three sway braces is 0.45, and the ratio that width dimensions and spring leaf muscle length overall are the most carefully located in the spring leaf muscle of sway brace centre is 0.018.
The thinnest width dimensions is 0.27mm in the middle of the spring leaf muscle of said three sway braces, and the width dimensions at thick place, the two ends that the spring leaf muscle of sway brace is connected with entity is 0.6mm, and spring leaf muscle length overall 14.7mm.
Also be connected with three vibration damping arms at the spring leaf innermost ring.
The utlity model has following advantage:
1, in the annular space of this wave detector between magnetic boots and shell two uniform magnetic fields is provided; This magnetic field be wider than on the shake wave detector coil block around coil, thereby reduce significantly to set up a magnetic field in the annular space of harmonic distortion between pole shoe and cylinder blanket in the seismoreceiver output signal;
2, this wave detector has the good spring leaf system of the linearity, produces the linear output of high resolving power signal when coil is moved therein, and promptly it produces less harmonic wave mistake value to seismic input.
3, the vibration damping arm of this wave detector can slow down the longitudinal impact force that outer arm receives, thus outer three sway braces of protection, the mission life that can prolong wave detector like this.
4, this wave detector is bigger with the physical dimension of wave detector than general common exploration, and it provides bigger free space for uniform magnetic field design and the design of the spring leaf linearity, can the performance of wave detector be accomplished better, can better adapt to the 3D seismic data collection.
Description of drawings
Fig. 1 is the structure cut-open view of the utility model.
Fig. 2 is the chip architecture of the spring synoptic diagram that three sway brace structures are arranged of the utility model.
Embodiment
The concrete structure of the utility model is as shown in Figure 1; Seismoreceiver comprises the permanent magnetism module; This assembly contains respectively has magnetic boots 5,7 on rare earth magnetic steel 6 each end; Also comprise shell 4 and coil block 14, be wound with coil 15,13 above that, coil block is contained in the ring-type air gap between rare earth magnetic steel and the shell.Between magnetic boots 5,7 and shell 4, set up magnetic field 3.Coil block 14 is supported by spring leaf 18,11; So that can in annulus gap, move with respect to the longitudinal axis of shell; Therefore; The seismic energy that coil 15,13 receives response is with respect to magnet steel and shell and move and produce a voltage, and this voltage is proportional to the relative velocity of coil to rare earth magnetic steel.
Referring to Fig. 2, spring leaf the 18, the 11st, the beryllium copper material is processed, and three sway brace structures are arranged; Evenly distribute along circumference, the thinnest portion 25 in the middle of the spring leaf muscle 27 of sway brace has is 0.27mm; The thick portion 26 in the two ends that are connected with entity is the characteristic of 0.6mm, and spring leaf muscle 27 length overalls are 17.4mm.The design of this shape can guarantee that through test of many times checking completion the spring leaf sway brace linearity is best.Certainly; Following size can realize the effect of the utility model equally: the width dimensions ratio of the most carefully locating width dimensions and thick place, spring leaf muscle two ends in the middle of the spring leaf muscle of said three sway braces is 0.45, and the ratio that width dimensions and spring leaf muscle length overall are the most carefully located in the spring leaf muscle of sway brace centre is 0.018.
In addition; Ring also has three vibration damping arms 28 in spring leaf; When wave detector is carried when construction in the open air when regular meeting receives the high strength lateral impact forces; Three vibration damping arms of interior ring 28 are participated in motion and can be slowed down the longitudinal impact force that three sway braces receive, thus three sway braces outside the protection, the mission life that prolongs wave detector.
Shell 4 is processed by permeability magnetic material.Top cover 24 and bottom 10 are processed by non-conductive material.Top cover and bottom are with O-ring seal 1 and 9 and the crimping end 4a of shell and the opposite end that 4b is fixed on shell.Spring leaf 11 is compressed against on the boss 10a of bottom 10; Relatively spring leaf flat shim packing ring 12 free to rotate and down contact spring 8 between magnetic boots 7 and spring leaf 11, thereby spring leaf 11 also through flat shim packing ring 12 and under contact spring 8 can freely rotate the boss 10a of bottom 10.Magnetic boots 7 have one be positioned at the center blind hole 5a.Blind hole is positioned on the central boss 10b of bottom, and has with following contact spring 8 and flat shim packing ring 12 and to electrically contact, thereby also has with spring leaf 11 and electrically contact.Insulation spacer 17 is isolated magnetic boots 5 and spring leaf 18 on electric; 17 pairs of spring leafs 18 of this insulation spacer and magnetic boots 5 are all rotatable; Outer contacting ring 2 is enclosed within and is arranged in magnetic boots 5 and has on the cylindrical boss 24a of blind hole 5a; This outer contacting ring 2 is to be clipped between the annular shoulder 24b and flat shim packing ring 19 of top cover, so that outer contacting ring 2 is connected on electric with spring leaf 18.
After wave detector receives vibration signal; The fixed system that shell 4 bottoms 10 magnetic boots 7 magnet steel 6 top covers 24 are formed keeps motionless; Coil block 14 is done relative motion, produces electric signal through electrode 22 and electrode 21 outputs at coil 15 and coil 13, can carry out picking up of seismic signal like this.
In the preferred embodiment of the utility model, the total length of seismoreceiver shell 4 is about 31.7 millimeters, is industry standard, and it is 5.1 millimeters that rare earth magnetic steel is about, and the length of each magnetic boots, the top and the bottom that are clipped to pole shoe from the magnet branch are measured, and are about 6.4 millimeters.
Used permanent magnet material must be a kind of magnetic material that enough magnetic field intensitys are arranged with magnetic boots that above-mentioned size is provided, and can produce enough magnetic field intensitys so that produce an output response from coil.Any remanence that has high coercive force (generally surpassing 11500 oersteds) to reach greater than 12800 Gausses just can be in order to produce a uniform magnetic field at magnet; Found that the rare-earth magnet effect that the rare earth material neodymium iron boron manufactures is very good; Rare-earth magnet is more crisp; Thereby before it is put into seismoreceiver, plate a layer thickness to rare-earth magnet and be about 0.16 millimeter nickel, copper, nickel clad, to reduce the broken possibility of magnet in manufacturing and open-air use.
The growth of the magnetic pole length of corresponding coil provides a well-proportioned magnetic field 3 for motion coil 15 and 13 betwixt; The amplitude of the non-linear second harmonic that causes is than low in the seismoreceiver that produces non-uniform magnetic-field in the seismoreceiver that produces uniform magnetic field; The result shows that uniform magnetic field makes the typical distortion value of wave detector drop to 0.075% and the typical distortion value of conventional common wave detector is 0.2%; The dynamic range of wave detector is weighed with distortion; Can reach 74 decibels through calculating this practical new wave detector dynamic range, 46 decibels of conventional wave detector dynamic ranges, therefore can be better and the dynamic range of 120 decibels in instrument adapt.
Claims (6)
1. speed type magnetoelectric seis is characterized in that it mainly comprises:
The non-magnetic conduction in two ends, the cylinder blanket of cylindrical shell magnetic conduction;
One cover permanent magnetism module, permanent magnetism module comprise having coercive force greater than 11500 oersteds and the remanence cylindrical magnet steel and the cylindrical magnetic boots that are positioned at the magnet steel opposite end greater than 12800 Gausses, and an end of every magnetic boots and a termination of magnet steel are closed; This permanent magnetism module is contained in the cylinder blanket, makes between permanent magnetism module and shell and leaves annular space;
Coil block; This coil block comprises: be suspended on the spring leaf device in the annular space with two of the lead coiled at coil axially separated by a distance and with said coil; The length that is shorter in length than each pole shoe of each coil; The length of each coil is 0.85 to the length ratio of each pole shoe at least, and pole shoe length is 1.2 to the magnet steel length ratio, and the length that is inconjunction with the magnet steel of two pole shoes is 0.63 to the cylinder blanket length ratio.
2. a kind of speed type magnetoelectric seis according to claim 1 is characterized in that said magnet steel is manufactured by rare earth material, and rare earth material is selected neodymium iron boron for use, nickel plating on rare earth material, copper, nickel clad.
3. a kind of speed type magnetoelectric seis according to claim 1; It is characterized in that, coil is suspended on the spring leaf device in the annular space, comprise the upper and lower spring leaf of fixed coil assembly upper and lower end; Ring is three sway brace structures in the spring leaf of this upper and lower spring leaf; This three sway brace evenly distributes along circumference, the thick architectural feature in two ends that the most carefully is connected with entity in the middle of sway brace has.
4. a kind of speed type magnetoelectric seis according to claim 3; It is characterized in that; The width dimensions ratio of the most carefully locating width dimensions and thick place, spring leaf muscle two ends in the middle of the spring leaf muscle of said three sway braces is 0.45, and the ratio that width dimensions and spring leaf muscle length overall are the most carefully located in the spring leaf muscle of sway brace centre is 0.018.
5. according to claim 2 or 3 described a kind of speed type magnetoelectric seis; It is characterized in that; The thinnest width dimensions is 0.27mm in the middle of the spring leaf muscle of said three sway braces; The width dimensions at thick place, the two ends that the spring leaf muscle of sway brace is connected with entity is 0.6mm, and spring leaf muscle length overall 14.7mm.
6. according to claim 3 or 4 described a kind of speed type magnetoelectric seis, it is characterized in that also being connected with three vibration damping arms at the spring leaf innermost ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204981978U CN202453509U (en) | 2011-12-05 | 2011-12-05 | Velocity type magnetoelectric seismic detector |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204981978U CN202453509U (en) | 2011-12-05 | 2011-12-05 | Velocity type magnetoelectric seismic detector |
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| CN202453509U true CN202453509U (en) | 2012-09-26 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2011204981978U Expired - Fee Related CN202453509U (en) | 2011-12-05 | 2011-12-05 | Velocity type magnetoelectric seismic detector |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102890287A (en) * | 2012-10-29 | 2013-01-23 | 冯克军 | High-sensitivity seismic detector |
| CN103048683A (en) * | 2012-12-12 | 2013-04-17 | 北京科络捷通讯产品有限责任公司 | Magnetic-suspension wave detector |
| CN107238858A (en) * | 2017-07-04 | 2017-10-10 | 四川吉赛特科技有限公司 | A kind of velocity profile magneto-electric high sensitivity geophone |
| CN110988983A (en) * | 2019-12-23 | 2020-04-10 | 芯元(浙江)科技有限公司 | Spring piece, detector and seismic exploration system for seismic exploration |
-
2011
- 2011-12-05 CN CN2011204981978U patent/CN202453509U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102890287A (en) * | 2012-10-29 | 2013-01-23 | 冯克军 | High-sensitivity seismic detector |
| CN103048683A (en) * | 2012-12-12 | 2013-04-17 | 北京科络捷通讯产品有限责任公司 | Magnetic-suspension wave detector |
| CN107238858A (en) * | 2017-07-04 | 2017-10-10 | 四川吉赛特科技有限公司 | A kind of velocity profile magneto-electric high sensitivity geophone |
| CN110988983A (en) * | 2019-12-23 | 2020-04-10 | 芯元(浙江)科技有限公司 | Spring piece, detector and seismic exploration system for seismic exploration |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP03 | Change of name, title or address |
Address after: 072555, Hebei, Baoding province Xushui district north car depot inside the hospital Patentee after: Baoding Zhaofeng sensing equipment Co., Ltd. Patentee after: Sun Hong Address before: 072555, Hebei, Baoding province Xushui County North car factory inside the hospital Patentee before: Xushui Zhaofeng Sensing Equipment Fittings Co.,Ltd. Patentee before: Sun Hong |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120926 Termination date: 20181205 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |