CN201845085U - Velocity-type magnetoelectric seismic detector - Google Patents
Velocity-type magnetoelectric seismic detector Download PDFInfo
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- CN201845085U CN201845085U CN2010206163334U CN201020616333U CN201845085U CN 201845085 U CN201845085 U CN 201845085U CN 2010206163334 U CN2010206163334 U CN 2010206163334U CN 201020616333 U CN201020616333 U CN 201020616333U CN 201845085 U CN201845085 U CN 201845085U
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Abstract
The utility model relates to seismic wave collection equipment, in particular to a velocity-type magnetoelectric seismic detector which comprises a magnetic steel 6, magnetic solid boots 5, a shell 9 and coil blocks 3, wherein the magnetic solid boots 5 are positioned at the upper and lower ends of the magnetic steel 6; the magnetic steel 6 is positioned at the center of a coil; the exterior of the magnetic steel 6 is provided with the shell 9; a top cap component 1 and a bottom cap 8 are respectively arranged at the upper and lower parts of the shell 9; the coil blocks 3 are arranged between the shell 9 and the magnetic steel 6 as well as between the shell 9 and the magnetic solid boots 5; the coil block 3 is formed by combination of a coil frame and two groups of coil windings with opposite winding directions; leads at two ends of the coil windings are led to output terminals of the top cap component through lead springs 2; and the coil blocks 3 are connected with the magnetic solid boots 5 through an upper spring piece 13 and a lower spring piece 11. The velocity magnetoelectric seismic detector achieves the requirements on the magnetic field evenness of the low distortion of the detector, the allowance of performance indexes is plus/minus 2.5 percent, so that the precision is improved by one time than the conventional detector, the test stability is good and the service life is long.
Description
Technical field
The utility model relates to a kind of seismic event collecting device, is a kind of speed type magnetoelectric seis.
Background technology
Along with oil-gas exploration turns to the lithology exploration, develops to the direct prediction of reservoirs direction from indirect searching oil gas from the structure exploration, accuracy requirement to seismic prospecting is also more and more higher, particularly, facilitate the use seismic properties hydrocarbon-bearing pool is predicted the requirement of earthquake signal resolution.At present, the seismic instrument performance is greatly improved, and especially the utilization of seismic instrument specialized large scale integrated circuit and 24 A/D converters reaches more than the 120dB instrument dynamic range.It makes the equivalence input noise of seismic instrument reach the microvolt level, and side by side seismic exploration excites and observes receive mode also obtain bigger development, and seismic exploration technique has had significant progress, makes high precision, high-resolution exploration become possibility.
Wave detector is as the front-end equipment of system for acquiring seismic data, requires that its technical parameter franchise is little, low distortion, high alias, promptly requires to use a kind of high precision wave detector.High conformity, relative error between each unit of the bright wave detector of acceleration geophone parameter franchise novel are little, correspondingly the phase place of seismic wave is more consistent, the output of low distortion explanation wave detector is big with respect to drive signal fidelity height, dynamic range, high alias means that frequency acceptance band is wideer, the useful signal loss is few, thereby improve the quality of earthquake-capturing data, reach the requirement of high precision, high density earthquake data acquisition wave detector.The high precision wave detector can be complementary with present main flow earthquake-capturing and recording unit better, for high precision, high density exploration provide truer, reliable raw data.
The wave detector upper spring sheet of existing at present band lead-in wire spring structure is unfixing, and like this, wave detector is in the course of the work because the variation that relative position is small between upper spring sheet and the coil former causes acceleration geophone parameter stability poor slightly; And the magnet steel that energy is provided uses is alnico magnetic material, magnetic energy product is lower, magnetic field energy easily decays, conventional geophone property index franchise is+/-5%, use in the open air and still can guarantee, but require more high-precision high precision wave detector index franchise for+/-2.5% just can't guarantee that and this utility model wave detector can better solve the defective of present conventional wave detector existence.
Summary of the invention
The utility model purpose is to provide a kind of and present main flow seismic instrument to mate, can promote the speed type magnetoelectric seis of image data precision better.
The utility model comprises magnet steel 6, magnetic boots 5, compensated loop 7, shell 9, coil block 3, cap assembly 1, bottom 8, lead-in wire spring 2, O-ring seal 10, magnetic boots 5 are positioned at magnet steel, and about in the of 6 two ends, magnet steel 6 is positioned at the hub of a spool position, magnet steel 6 outsides are provided with shell 9, shell 9 is respectively equipped with cap assembly 1 up and down, bottom 8, at shell 9 and magnet steel 6, be provided with coil block 3 between the magnetic boots 5, coil block 3 by coil rack and two groups around combining to opposite coil winding, the lead-in wire at coil winding two ends is guided on the lead-out terminal of cap assembly by lead-in wire spring 2, and feature is that coil block 3 is by upper spring sheet 13, lower spring sheet 11 is connected with magnetic boots 5.
The outer shroud 20 of upper spring sheet 13 has plural circular arc groove between the interior ring 21, constitutes the sway brace more than 14 that is uniformly distributed on the concentric circles;
Have plural circular arc groove on the ring 21 in the upper spring sheet 13, constitute the vibration damping arm 15 more than that is uniformly distributed on the concentric circles;
The length of sway brace 14 and sway brace outermost end are 1.74 to the radius ratio in the center of circle;
The interior ring 21 of upper spring sheet 13, lower spring sheet 11 is connected with last magnetic boots 5, bottom 8 respectively, and the spring leaf fixed support is provided; Spring leaf outer shroud 20 links to each other with coil block 3, and sway brace 14 is suspended in the magnetic gap between magnetic boots 5 and the shell 9 coil block 3, and can freely move up and down vertically.
Having cross sectional shape on the coil holder endoporus of coil block 3 is trapezoidal annular spring groove 19, and trapezoidal jump ring groove 19 upper ends have ring groove 18, and ring groove 18 slightly larger in diameter are in the diameter of spring leaf 13.During assembling, earlier upper spring sheet 13 is put into ring groove 18, jump ring pad 12 places between upper spring sheet 13 and the jump ring 4, and fixing with jump ring 4.
Magnet steel 6 is a NdFeB material, plating nickel on surface-copper-nickel, and the magnetic conduction length of the length of magnet steel and magnetic boots 5 is than 1.1, and the wire casing width of magnetic boots magnetic conduction length and coil is than 0.63, and magnet steel has compensated loop 7 outward.
The utility model has reached the low distortion of wave detector to the uniform requirement in magnetic field, and the performance index franchise is+/-2.5%, than 1 times of conventional wave detector precision improvement, the good stability of test, long service life.
Description of drawings
Fig. 1 is a structure cut-open view of the present utility model;
Fig. 2 is a chip architecture of the spring synoptic diagram of the present utility model;
Fig. 3 is the utility model coil assembly jump ring groove partial sectional view.
Embodiment
The utility model design comprises magnet steel 6, magnetic boots 5, compensated loop 7, shell 9, coil block 3, cap assembly 1, bottom 8, lead-in wire spring 2, O-ring seal 10, magnetic boots 5 are positioned at magnet steel, and about in the of 6 two ends, magnet steel 6 is positioned at the hub of a spool position, magnet steel 6 outsides are provided with shell 9, shell 9 is respectively equipped with cap assembly 1 up and down, bottom 8, at shell 9 and magnet steel 6, be provided with coil block 3 between the magnetic boots 5, coil block 3 by coil rack and two groups around combining to opposite coil winding, the lead-in wire at coil winding two ends is guided on the lead-out terminal of cap assembly by lead-in wire spring 2, and feature is that coil block 3 is by upper spring sheet 13, lower spring sheet 11 is connected with magnetic boots 5.
The outer shroud 20 of upper spring sheet 13 has plural circular arc groove between the interior ring 21, constitutes the sway brace more than 14 that is uniformly distributed on the concentric circles;
Have plural circular arc groove on the ring 21 in the upper spring sheet 13, constitute the vibration damping arm 15 more than that is uniformly distributed on the concentric circles;
The length of sway brace 14 and sway brace outermost end are 1.74 to the radius ratio in the center of circle;
The interior ring 21 of upper spring sheet 13, lower spring sheet 11 is connected with last magnetic boots 5, bottom 8 respectively, and the spring leaf fixed support is provided; Spring leaf outer shroud 20 links to each other with coil block 3, and sway brace 14 is suspended in the magnetic gap between magnetic boots 5 and the shell 9 coil block 3, and can freely move up and down vertically.
The elasticity linearity when structural design of spring leaf 13 can guarantee spring leaf work, thereby the low distortion of assurance wave detector.Sway brace 14 support coils participated in motion when wave detector was normally vertically worked, two vibration damping arms 15 on the interior ring keep static, when the field is transported or is loaded and unloaded this wave detector, or wave detector is when construction the time is subjected to lateral impact power, two vibration damping arms 15 in sway brace 14 is subjected to impacting its impact energy is passed on the ring, two vibration damping arms in this moment on the ring produce deformation, absorb impact energy, effectively alleviate the effect of lateral impact to sway brace 14, guarantee that sway brace 14 avoids damage, the serviceable life of therefore improving wave detector.
Having cross sectional shape on the coil holder endoporus of coil block 3 is trapezoidal annular spring groove 19, and trapezoidal jump ring groove 19 upper ends have ring groove 18, and ring groove 18 slightly larger in diameter are in the diameter of spring leaf 13.During assembling, earlier upper spring sheet 13 is put into ring groove 18, jump ring pad 12 places between upper spring sheet 13 and the jump ring 4, and fixing with jump ring 4.
The above structural design of coil block 3 can be fixed together the outer shroud 20 of upper spring sheet with coil block 3, guarantee both good connections, can promote the wave detector stability like this.
Magnet steel 6 is a NdFeB material, plating nickel on surface-copper-nickel, and the magnetic conduction length of the length of magnet steel and magnetic boots 5 is than 1.1, and the wire casing width of magnetic boots magnetic conduction length and coil is than 0.63, and magnet steel has compensated loop 7 outward.
The utility model adopts the rare earth permanent magnet neodymium-iron-boron magnetic material to provide work magnetic field for wave detector, by reducing the magnet steel height, increase magnetic boots height, widen the width of uniform magnetic field in the gap between magnetic boots and the shell, reach the design in strong evenly work magnetic field, thereby satisfied of the requirement of wave detector low distortion uniformity of magnetic field.
The utility model has reached the requirement of the low distortion of wave detector to uniformity of magnetic field, and the performance index franchise is+/-2.5%, than 1 times of conventional wave detector precision improvement, the good stability of test, long service life.
Claims (9)
1. speed type magnetoelectric seis, comprise magnet steel (6), magnetic boots (5), compensated loop (7), shell (9), coil block (3), cap assembly (1), bottom (8), lead-in wire spring (2), O-ring seal (10), magnetic boots (5) are positioned at magnet steel (6) two ends up and down, magnet steel (6) is positioned at the hub of a spool position, magnet steel (6) outside is provided with shell (9), shell (9) is respectively equipped with cap assembly (1) up and down, bottom (8), at shell (9) and magnet steel (6), be provided with coil block (3) between the magnetic boots (5), coil block (3) by coil rack and two groups around combining to opposite coil winding, the lead-in wire at coil winding two ends is guided on the lead-out terminal of cap assembly by lead-in wire spring (2), and feature is that coil block (3) is by upper spring sheet (13), lower spring sheet (11) is connected with magnetic boots (5).
2. speed type magnetoelectric seis according to claim 1, it is characterized in that: the outer shroud (20) of upper spring sheet (13) has plural circular arc groove between the interior ring (21), constitutes the sway brace more than (14) that is uniformly distributed on the concentric circles.
3. speed type magnetoelectric seis according to claim 1 is characterized in that: have plural circular arc groove on the ring (21) in the upper spring sheet (13), constitute the vibration damping arm (15) more than that is uniformly distributed on the concentric circles.
4. according to claim 1 or 2 or 3 described speed type magnetoelectric seis, it is characterized in that: sway brace (14) two ends are thick, and middle thin, two ends and middle scale are 2.16; The length of sway brace (14) and sway brace outermost end are 1.74 to the radius ratio in the center of circle.
5. according to claim 1 or 2 or 3 described speed type magnetoelectric seis, it is characterized in that: upper spring sheet (13), lower spring sheet (11) shape are identical, and sway brace (14) has three, and vibration damping arm (15) has two.
6. speed type magnetoelectric seis according to claim 1 is characterized in that: the interior ring (21) of upper spring sheet (13), lower spring sheet (11) is connected with last magnetic boots (5), bottom (8) respectively, and the spring leaf fixed support is provided; Spring leaf outer shroud (20) links to each other with coil block (3), and sway brace (14) is suspended in the magnetic gap between magnetic boots (5) and the shell (9) coil block (3), and can freely move up and down vertically.
7. speed type magnetoelectric seis according to claim 1, it is characterized in that: having cross sectional shape on the coil holder endoporus of coil block (3) is trapezoidal annular spring groove (19), trapezoidal jump ring groove (19) upper end has ring groove (18), and ring groove (18) slightly larger in diameter is in the diameter of spring leaf (13).
8. according to claim 1 or 7 described speed type magnetoelectric seis, it is characterized in that: upper spring sheet (13) is in ring groove (18), and jump ring pad (12) places between upper spring sheet (13) and the jump ring (4), and fixing with jump ring (4).
9. speed type magnetoelectric seis according to claim 1, it is characterized in that: magnet steel (6) is a NdFeB material, plating nickel on surface-copper-nickel, the magnetic conduction length of the length of magnet steel and magnetic boots (5) is than 1.1, the wire casing width of magnetic boots magnetic conduction length and coil is than 0.63, and magnet steel has compensated loop (7) outward.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206163334U CN201845085U (en) | 2010-11-18 | 2010-11-18 | Velocity-type magnetoelectric seismic detector |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206163334U CN201845085U (en) | 2010-11-18 | 2010-11-18 | Velocity-type magnetoelectric seismic detector |
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| Publication Number | Publication Date |
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| CN201845085U true CN201845085U (en) | 2011-05-25 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2010206163334U Expired - Fee Related CN201845085U (en) | 2010-11-18 | 2010-11-18 | Velocity-type magnetoelectric seismic detector |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102890287A (en) * | 2012-10-29 | 2013-01-23 | 冯克军 | High-sensitivity seismic detector |
| CN107065001A (en) * | 2017-01-18 | 2017-08-18 | 西安森舍电子科技有限责任公司 | A kind of double winding wideband closed loop geophone |
| 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 |
-
2010
- 2010-11-18 CN CN2010206163334U patent/CN201845085U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102890287A (en) * | 2012-10-29 | 2013-01-23 | 冯克军 | High-sensitivity seismic detector |
| CN107065001A (en) * | 2017-01-18 | 2017-08-18 | 西安森舍电子科技有限责任公司 | A kind of double winding wideband closed loop geophone |
| 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 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110525 Termination date: 20191118 |
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| CF01 | Termination of patent right due to non-payment of annual fee |