CN107238858A - A kind of velocity profile magneto-electric high sensitivity geophone - Google Patents
A kind of velocity profile magneto-electric high sensitivity geophone Download PDFInfo
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- CN107238858A CN107238858A CN201710537534.1A CN201710537534A CN107238858A CN 107238858 A CN107238858 A CN 107238858A CN 201710537534 A CN201710537534 A CN 201710537534A CN 107238858 A CN107238858 A CN 107238858A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V1/00—Seismology; Seismic or acoustic prospecting or detecting
- G01V1/16—Receiving elements for seismic signals; Arrangements or adaptations of receiving elements
- G01V1/18—Receiving elements, e.g. seismometer, geophone or torque detectors, for localised single point measurements
- G01V1/181—Geophones
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- Geophysics And Detection Of Objects (AREA)
Abstract
The invention discloses a kind of velocity profile magneto-electric high sensitivity geophone, including cap assembly, bottom, iron shell, coil block, silver-plated magnetic boots, permanent magnet, spring leaf and jump ring, silver-plated magnetic boots are two, it is located at the upper/lower terminal of permanent magnet respectively, permanent magnet is located at the middle part of coil block, and iron shell is located at the outside of permanent magnet, after permanent magnet magnetizes, by silver-plated magnetic boots and iron shell formation magnetic loop, magnetic system is constituted；Coil block is divided into upper and lower two spring leaf, and upper and lower two spring leaf is stuck in the upper and lower ends of coil block by jump ring, constitutes spring-mass vibration-damping system；What upper spring leaf and lower spring piece was produced upward makes a concerted effort to make coil system be in level, and the magnetic field being suspended between silver-plated magnetic boots and iron shell.This geophone frequency, damping, sensitivity and parameters precision meet the requirement of high-precision fine granularing scalability.
Description
Technical field
The present invention relates to a kind of sensor special for geological prospecting and engineering survey, especially a kind of velocity profile magnetoelectricity
Formula high sensitivity geophone, belongs to earthquake detection instrument technical field.
Background technology
Geophone is a kind of sensor that ground vibration is changed into electric signal, or perhaps mechanical energy is converted into
The energy conversion device of electric energy.Geophone is one of important composition of system for acquiring seismic data.Wave detector embedding is in ground
Earth shock caused by seismic wave, is converted into electric signal and electric signal is sent into seismic detector by cable by face;Digital seismograph
Electric signal amplification will be received, binary data, tissue data are converted into by A/D converter and stores data.
As 3-d seismic exploration required precision more and more higher, reception channel number are more and more, sampling density is continuously increased, in advance
Count by 2025, it may be desirable to ability is carried up to the earthquake-capturing instrument in million roads, for wired collections more than 50,000 roads
There is cable management and difficult in maintenance in instrument, the office such as operating cost height in wide-azimuth, high density, main road number data acquisition is carried out
Limit.Untethered, Single-receiver seismics data collecting system can mitigate system weight, improve operating flexibility, can meet Seismic Operation raising
Efficiency of construction, reduction operating cost requirement, are an important development directions of current seismic collection.3-d seismic exploration precision
Improve, to the parameters precision of wave detector, inclination angle performance, the requirement of reliability is also multiplied.In field acquisition, to obtain more preferably
Collection data, it is desirable to accomplish that level, honest, coupling are good during geophone arrangement, this is the disaster that seismic field crew faces
Topic, also makes the key factor of influence Collecting operation efficiency, and for complicated landform, is even more difficult to.
The content of the invention
It is an object of the invention to：For above-mentioned problem, there is provided a kind of velocity profile magneto-electric high-sensitivity earthquake
Wave detector, can solve the problem that the parameters precision inclination angle after being improved for 3-d seismic exploration precision for geophone is showed, can
By the requirement of property, the seismic prospecting for the complicated base pay that is particularly suitable for use in.
The technical proposal of the invention is realized in this way：A kind of velocity profile magneto-electric high sensitivity geophone, including
Cap assembly, bottom, iron shell, coil block, silver-plated magnetic boots, permanent magnet, spring leaf and jump ring, silver-plated magnetic boots are two, point
Not Wei Yu permanent magnet upper/lower terminal, permanent magnet be located at coil block middle part, iron shell be located at permanent magnet outside, permanent magnetism
After body magnetizes, by silver-plated magnetic boots and iron shell formation magnetic loop, magnetic system is constituted；Coil block is divided into upper and lower two spring leaf,
Upper and lower two spring leaf is stuck in the upper and lower ends of coil block by jump ring, constitutes spring mass vibration-damping system；Upper spring
Piece and lower spring piece produce it is upward make a concerted effort to make coil system be in level, and be suspended between silver-plated magnetic boots and iron shell
In magnetic field.
One of it is preferred that, the upper/lower terminal of iron shell is respectively equipped with upper top cover component and bottom, and in upper top cover
Rubber ring is respectively equipped between component and iron shell upper end, between bottom and iron shell lower end.
One of it is preferred that, provided with the electrode for drawing induced signal on upper top cover component；In upper top cover component
The portion fourth of the twelve Earthly Branches is pressed with gold-plated insulator, and inside and outside tile course piece contact pilotage is got out by the endoporus of gold-plated insulator on the inside of upper top cover component.
One of it is preferred that, coil block includes coil rack and two groups of coils being arranged on coil rack, two
Group coil around to opposite；The two ends of coil block are respectively equipped with enamel-covered wire the end of a thread, and the end of a thread upper end is welded on spring leaf, on
The outer shoe piece of cap assembly is pressed on spring leaf, after induced-current is produced, is passed to through enamel-covered wire on spring leaf, then by spring
Piece passes to outer shoe piece, from the output of upper top cover component positive pole contact pilotage；Coil lead lower end is welded on lower spring piece, via lower plating
Silver-colored magnetic boots, permanent magnet, upper silver-plated magnetic boots, then interior contact chip on upper top cover component guide to the other end negative pole of electrode.
One of it is preferred that, insulation spacer is provided between upper silver-plated magnetic boots and upper spring leaf.
One of it is preferred that, provided with three support arms in the outer shroud of the spring leaf, provided with two vibration dampings in inner ring
Arm；Three support arms are evenly distributed on using spring leaf axis as the concentric circumferences in the center of circle, three support arm geomery phases
Together, the radius ratio of the length of support arm and support arm outermost end to the center of circle is 1.49.
One of it is preferred that, the support arm is the thick middle thin structure in two ends, and the width at two ends is equal to centre
Twice.
One of it is preferred that, the magnetic conduction face of the magnetic conduction heel piece of silver-plated magnetic boots is highly H1, the convex platform of silver-plated magnetic boots
Highly it is H3, the lower edge of silver-plated magnetic boots is highly H4, and the height of permanent magnet is H2, and coil block wire casing width is H6, silver-plated magnetic
The distance of plane is H5 on upper plane separation coil block winding slot where boots convex platform；Wherein, H1：H2=1：1； H1：H6=
1.49：1；H3：H4=1：The ratio of 1, the H5 distance with going up plane separation coil block winding slot bottom surface where silver-plated magnetic boots convex platform
For 1.2:1.
One of it is preferred that, the magnetic conduction face height H1 of the magnetic conduction heel piece of silver-plated magnetic boots is 9.15mm, the length of permanent magnet
Footpath ratio is 0.48.
One of it is preferred that, permanent magnet periphery is provided with compensation ring 10.
Beneficial effects of the present invention：This geophone receives for single-point, reduces construction operation difficulty, is that million roads are highly dense
Degree collection provides guarantee, is similarly lossless collection, makes the diverse processing in later stage more flexible；Specifically, possess following excellent
Point：
Cause the wave detector when in face of more high inclination-angle 1. the magnetic structure of a geophone is invented, core body indices are remained to
Normal work, it is ensured that reduce the difficulty of laying arrangement while quality for seismic field crew；
2. the elastic system of a geophone has excellent linear performance, make this geophone bear high and cold, mountain region,
The test of the harsh and unforgiving environments such as desert, beach；
It 3. a geophone is conventional speed type magnetoelectricity structure, can match well with acquisition and recording equipment, be node
Shake data acquisition equipment and reliable real data are provided；
4. the equipment that wave detector is received as geological data, it is desirable to the suitable output with seismic detector string can be provided, entered
And the requirement of instrument single-geophone receiver is met, the sensitivity of this geophone is up to 85.8V/m/s, meets and requires.
Brief description of the drawings
Fig. 1 is the structure sectional view of the geophone.
Fig. 2 is the cap assembly sectional view of the geophone.
Fig. 3 is the magnetic system assembling figure of the geophone.
Fig. 4 is the coil block sectional view of the geophone.
Fig. 5 is the spring leaf engineering drawing of the geophone.
Marked in figure：1- cap assemblies, 2- iron shells, 3- coil blocks, the silver-plated magnetic boots of 4-, 5- permanent magnets, 6- bullets
Contact chip under reed, 7-, 8- insulation spacers, 9- jump rings, 10- compensation rings, 11- bottoms, 12- rubber rings.
Embodiment
Below in conjunction with the accompanying drawings, the present invention is described in detail.
In order to make the purpose , technical scheme and advantage of the present invention be clearer, it is right below in conjunction with drawings and Examples
The technology of the present invention is further elaborated.It should be appreciated that specific embodiment described herein is only to explain this hair
It is bright, it is not intended to limit the present invention.
Embodiment：
As shown in Fig. 1,2,3,4,5, a kind of velocity profile magneto-electric high sensitivity geophone, including cap assembly 1, bottom
11st, iron shell 2, coil block 3, silver-plated magnetic boots 4, permanent magnet 5, spring leaf 6, lower contact chip 7, insulation spacer 8, jump ring 9, compensation
Ring 10 and rubber ring 12.
Wherein：Silver-plated magnetic boots 4 are two, respectively positioned at the upper/lower terminal of permanent magnet 5, and permanent magnet 5 is located at coil block 3
Middle part, iron shell 2 be located at permanent magnet 5 outside, after permanent magnet 5 magnetizes, pass through silver-plated magnetic boots 4 and iron shell 2 formation magnetic return
Road, energy is provided for wave detector, constitutes magnetic system.
Coil block 3 includes coil rack and two groups of coils being arranged on coil rack, two groups of coils around to opposite；
Technical ability of the present invention then strong sensitivity, and the induced distortion of lower coil can be offset.3 points of coil block is upper and lower two spring leaf,
Upper and lower two spring leaf is stuck in the upper and lower ends of coil block 3 by jump ring 9, then is fixed on by way of welding coil block 3
On, constitute spring mass vibration-damping system.What upper spring leaf and lower spring piece was produced upward makes a concerted effort to make at coil system 3
In level, and in the magnetic field being suspended between silver-plated magnetic boots 4 and iron shell 2.It is upper to be provided with exhausted between silver-plated magnetic boots and upper spring leaf
Edge pad 8.
In electrical connection：Two enamel-covered wire the end of a thread are reserved at the two ends of coil block 3, and the end of a thread upper end is welded on spring leaf 6, dress
The outer shoe piece of part cap assembly 1 is pressed on spring leaf all the time, after induced-current is produced, is passed to through enamel-covered wire on spring leaf 6,
The lower contact chip 7 for passing to lower section by spring leaf 6 again is in contact, and passes to outer shoe piece last from the output of the positive pole contact pilotage of cap assembly 1.
Coil lead lower end is welded on lower spring piece, via silver-plated lower magnetic boots 4, permanent magnet 5, silver-plated upper magnetic boots 4, then by cap assembly
Interior contact chip on 1 guides to the other end negative pole of electrode.Invention has insulation spacer 8 between upper magnetic boots 4 and upper spring leaf 6, plays
The effect of electric insulation.When wave detector is by extraneous vibration, coil system opposite shell produces relative motion, and then cuts magnetic
The line of force, passes through two electrode output voltage signals of cap assembly.The enamel-covered wire of coil block of the present invention close to spring leaf position
Put around an annulus, it is ensured that enamel-covered wire does not break when by extraneous judder, plays a part of buffering.
The upper/lower terminal of iron shell 2 is respectively equipped with upper top cover component 1 and bottom 11, and in upper top cover component 1 and iron shell
Rubber ring 12 is respectively equipped between upper end, between bottom 11 and iron shell lower end, anti-oxidation is on the one hand sealed, it is on the other hand logical
Two electrodes for crossing top cover group 1 draw induced signal, specifically, provided with the electricity for drawing induced signal on upper top cover component 1
Pole；The middle part fourth of the twelve Earthly Branches of upper top cover component 1 is pressed with gold-plated insulator, and inside and outside tile course piece contact pilotage is by the endoporus of gold-plated insulator, from upper
The inner side of cap assembly 1 is got out.
Provided with three support arms in the outer shroud of the spring leaf, provided with two vibration damping arms in inner ring；The support arm is two
Thin structure in the middle of end is thick, and the width at two ends is equal to middle twice.Three support arms are evenly distributed on spring leaf axis
Line is in the concentric circumferences in the center of circle, three support arm geomeries is identical, length and the support arm outermost end to the center of circle of support arm
Radius ratio be 1.49.Can so make its spring the elastic linearity more preferably, three support arms are in effective operation interval, and stress is complete
It is complete consistent, it is ensured that the low distortion of wave detector.Wave detector normal upright outer three support arms support coil participation motion, interior two when working
Vibration damping arm remains stationary, when field transport or when loading and unloading this wave detector, or wave detector in construction by very big lateral impact
During power, outer three support arm is transferred its vibrations to interior two vibration damping arms by impact, and now interior two vibration dampings arm produces deformation, effectively
Alleviate the effect of external three support arm of lateral impact, it is ensured that outer arm improves the service life of wave detector from damage.
The present invention is single-point high-sensitivity detector, and sensitivity is up to 85.8V/m/s, and therefore, this practical permanent magnet 5 is used
Neodymium remanent magnetism is more than 13.7KGs, and coercivity is more than 14KOe iron boron material, and size is φ 19.1mm × 9.1mm, surface plating
Ambrose alloy nickel, NdFeB material compares the aluminium nickel cobalt material of conventional art, with higher magnetic energy product, and the squareness of demagnetizing curve
It is well many compared with aluminium nickel cobalt material, therefore, it is possible in the formation approaches uniformity of the annular region between iron shell 2 of silver-plated magnetic boots 4
, the magnetic field that magnetic flux density is higher, for this practical height output provide energy ensure.
The magnetic conduction face of the magnetic conduction heel piece of silver-plated magnetic boots 4 is highly H1, and the convex platform of silver-plated magnetic boots 4 is highly H3, silver-plated magnetic
The lower edge of boots 4 is highly H4, and the height of permanent magnet 5 is H2, and the center line well width of coil block 3 is H6, silver-plated magnetic boots convex platform institute
The distance of plane is H5 on upper plane separation coil block winding slot.
The present invention not only reduces the multiple harmonic of wave detector from the Xian Xing of spring leaf, equally goes out from magnetic field's regularity
Hair, reduces multiple harmonic, especially second harmonic.And then reduce the overall level of distortion of wave detector.By the shape for changing yoke
Shape, to change the trend and intensity of the magnetic line of force, concentrated position, farthest to reduce regional magnetic field residing for coil
It is non-linear.
This practicality has invented broader magnetic conduction heel piece to reduce the leakage field at wave detector two ends, the magnetic conduction face H1 of silver-plated magnetic boots 4
For 9.15mm.
Permanent magnet height H2 and magnetic boots height H1 ratio:1：1, permanent magnet height H2 are also 9.15mm.
To improve the utilization rate of permanent magnet performance, the draw ratio of permanent magnet should meet 0.48.
The silver-plated magnetic conduction face length H1 of magnetic boots 4 is 1.49 with the center line well width H6 ratios of coil block 3：1, the center line of coil block 3
Well width H6 is 6.14.
The convex platform H3 of magnetic boots 4 is 1 with the length ratio under magnetic boots along H4.
The ratio of the distance of the upper plane separation coil block winding slot bottom surface of H5 and silver-plated magnetic boots convex platform place is 1.2:1.
The relative magnetic field width of the present invention was invented more in the past obvious improvement.Ensure that this practicality can adapt to bigger
Inclination angle, is provided conveniently for the construction in field.
Neodymium iron boron temperature coefficient is big, to solve this problem, and magnet steel outgoing understands compensation ring 10, and compensation ring absorbs the magnetic line of force
Ability be inversely proportional with temperature, enter you reduction magnetic boots and shell between annular region in change in magnetic flux density, in the temperature of change
Wave detector electric parameter uniformity is ensure that under degree environment.
Oil prospecting in use, detection instrument magnet steel shake produce vibration signal in the earth formation, according to invention require away from
The place arrangement geophones different from shot point receive vibration signal, then the vibration signal received is handled,
Explain, according to the attribute on the information analysis different depth such as the frequency of signal, amplitude, speed stratum, form of construction etc., so that just
Step determines whether possess oil generation, oil storage condition, finally provides the well location of probing.
The present invention is single-point high-sensitivity detector, and sensitivity is up to 85.8V/m/s, and therefore, this practical permanent magnet 5 is used
Neodymium remanent magnetism is more than 13.7KGs, and coercivity is more than 14KOe iron boron material, and size is φ 19.1mm × 9.1mm, surface plating
Ambrose alloy nickel, NdFeB material compares the aluminium nickel cobalt material of conventional art, with higher magnetic energy product, and the squareness of demagnetizing curve
It is well many compared with aluminium nickel cobalt material, therefore, it is possible between magnetic boots 4 and shell 2 annular region formation approaches uniformity, magnetic flux it is close
Du Genggao magnetic field, provides energy for this practical height output and ensures.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention
Any modifications, equivalent substitutions and improvements made within refreshing and principle etc., should be included in the scope of the protection.
Claims (10)
1. a kind of velocity profile magneto-electric high sensitivity geophone, including cap assembly（1）, bottom（11）, iron shell（2）、
Coil block（3）, silver-plated magnetic boots（4）, permanent magnet（5）, spring leaf（6）And jump ring（9）, it is characterised in that：Silver-plated magnetic boots（4）For
Two, respectively positioned at permanent magnet（5）Upper/lower terminal, permanent magnet（5）Positioned at coil block（3）Middle part, iron shell（2）If
In permanent magnet（5）Outside, permanent magnet（5）After magnetizing, pass through silver-plated magnetic boots（4）And iron shell（2）Magnetic loop is formed, magnetic is constituted
System；Coil block（3）It is divided into upper and lower two spring leaf, upper and lower two spring leaf passes through jump ring（9）It is stuck in coil block（3）Above and below
Two ends, constitute spring mass vibration-damping system；What upper spring leaf and lower spring piece was produced upward makes a concerted effort to make coil system
（3）In level, and it is suspended in silver-plated magnetic boots（4）With iron shell（2）Between magnetic field in.
2. velocity profile magneto-electric high sensitivity geophone according to claim 1, it is characterised in that：Iron shell（2）
Upper/lower terminal be respectively equipped with upper top cover component（1）And bottom（11）, and in upper top cover component（1）Between iron shell upper end,
Bottom（11）Rubber ring is respectively equipped between iron shell lower end（12）.
3. velocity profile magneto-electric high sensitivity geophone according to claim 2, it is characterised in that：In upper top cover group
Part（1）Provided with the electrode for drawing induced signal；Upper top cover component（1）The middle part fourth of the twelve Earthly Branches be pressed with gold-plated insulator, inside and outside tile course piece
Contact pilotage is by the endoporus of gold-plated insulator, from upper top cover component（1）Inner side get out.
4. velocity profile magneto-electric high sensitivity geophone according to claim 1, it is characterised in that：Coil block
（3）Including coil rack and two groups of coils being arranged on coil rack, two groups of coils around to opposite；Coil block（3）'s
Two ends are respectively equipped with enamel-covered wire the end of a thread, and the end of a thread upper end is welded on spring leaf, upper top cover component（1）Outer shoe piece be pressed in
On spring leaf, after induced-current is produced, spring leaf is passed to through enamel-covered wire（6）On, then by spring leaf（6）Outer shoe piece is passed to, from
Upper top cover component（1）Positive pole contact pilotage is exported；Coil lead lower end is welded on lower spring piece, silver-plated magnetic boots, permanent magnet under
（5）, upper silver-plated magnetic boots, then by upper top cover component（1）On interior contact chip guide to the other end negative pole of electrode.
5. velocity profile magneto-electric high sensitivity geophone according to claim 4, it is characterised in that：Upper silver-plated magnetic boots
Insulation spacer is provided between upper spring leaf（8）.
6. velocity profile magneto-electric high sensitivity geophone according to claim 1, it is characterised in that：The spring leaf
Outer shroud in provided with three support arms, provided with two vibration damping arms in inner ring；Three support arms are evenly distributed on spring leaf axis
Line is in the concentric circumferences in the center of circle, three support arm geomeries is identical, length and the support arm outermost end to the center of circle of support arm
Radius ratio be 1.49.
7. velocity profile magneto-electric high sensitivity geophone according to claim 6, it is characterised in that：The support arm
For two ends slightly middle thin structure, and the width at two ends is equal to middle twice.
8. velocity profile magneto-electric high sensitivity geophone according to claim 1, it is characterised in that：Silver-plated magnetic boots
（4）Magnetic conduction heel piece magnetic conduction face highly be H1, silver-plated magnetic boots（4）Convex platform highly be H3, silver-plated magnetic boots（4）Lower edge it is high
Spend for H4, permanent magnet（5）Height be H2, coil block（3）Center line well width is upper plane where H6, silver-plated magnetic boots convex platform
Distance away from plane on coil block winding slot is H5；Wherein, H1：H2=1：1； H1：H6=1.49：1；H3：H4=1：1, H5 with
The ratio of the distance of upper plane separation coil block winding slot bottom surface is 1.2 where silver-plated magnetic boots convex platform:1.
9. velocity profile magneto-electric high sensitivity geophone according to claim 8, it is characterised in that：Silver-plated magnetic boots
（4）Magnetic conduction heel piece magnetic conduction face height H1 be 9.15mm, permanent magnet（5）Draw ratio be 0.48.
10. velocity profile magneto-electric high sensitivity geophone according to claim 1, it is characterised in that：Permanent magnet（5）
Periphery is provided with compensation ring（10）.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710537534.1A CN107238858A (en) | 2017-07-04 | 2017-07-04 | A kind of velocity profile magneto-electric high sensitivity geophone |
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| CN201710537534.1A CN107238858A (en) | 2017-07-04 | 2017-07-04 | A kind of velocity profile magneto-electric high sensitivity geophone |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2677951C1 (en) * | 2017-10-16 | 2019-01-22 | Федеральное государственное казенное учреждение "12 Центральный научно-исследовательский институт" Министерства обороны Российской Федерации | Liquid velocity meter |
| CN111239800A (en) * | 2020-02-26 | 2020-06-05 | 吉林大学 | Interactive auxiliary geophone leveling device and method |
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| CN205920227U (en) * | 2016-08-04 | 2017-02-01 | 涿州昌迪石油仪器有限公司 | Moving -coil high sensitivity low distortion degree geophone |
| CN206161873U (en) * | 2016-11-04 | 2017-05-10 | 河北赛赛尔俊峰物探装备有限公司 | High temperature geophone |
| CN206975230U (en) * | 2017-07-04 | 2018-02-06 | 四川吉赛特科技有限公司 | A kind of velocity profile magneto-electric high sensitivity geophone |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2677951C1 (en) * | 2017-10-16 | 2019-01-22 | Федеральное государственное казенное учреждение "12 Центральный научно-исследовательский институт" Министерства обороны Российской Федерации | Liquid velocity meter |
| CN111239800A (en) * | 2020-02-26 | 2020-06-05 | 吉林大学 | Interactive auxiliary geophone leveling device and method |
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