CN203103045U - Geophone magnetic body component and low-distortion geophone - Google Patents
Geophone magnetic body component and low-distortion geophone Download PDFInfo
- Publication number
- CN203103045U CN203103045U CN 201220661367 CN201220661367U CN203103045U CN 203103045 U CN203103045 U CN 203103045U CN 201220661367 CN201220661367 CN 201220661367 CN 201220661367 U CN201220661367 U CN 201220661367U CN 203103045 U CN203103045 U CN 203103045U
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- Prior art keywords
- pole shoe
- geophone
- annular groove
- magnet
- compensated loop
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Abstract
The utility model provides a first geophone magnetic body component which can be applied to inner magnetic induction type geophones in all structures. The geophone magnetic body component comprises an upper pole shoe, a lower pole shoe, a magnetic body and a compensation ring, wherein the magnetic body is embedded into the compensation ring; an upper annular groove is formed in the upper end face of the upper pole shoe; a lower annular groove is formed in the inner end face of the lower pole shoe; and two ends of the compensation ring are respectively embedded into the upper annular groove and the lower annular groove. A low-distortion geophone provided by the utility model comprises a shell, an upper top cover, a lower top cover, an inertia body system and a magnetic system, wherein the magnetic system adopts the geophone magnetic body component provided by the utility model. A uniform working magnetic field which is supplied to the geophone by the geophone magnetic body component provided by the utility model is further and effectively extended; a stray magnetic field on a combined part of the magnetic body, the pole shoes and the compensation ring is improved; and the effect of reducing the distortion index of the geophone is obvious.
Description
Technical field
The utility model relates to a kind of geophone magnet assembly and corresponding geophone, relates in particular to a kind of interior magnetic inductive geophone magnet assembly and corresponding geophone that is used for geological prospecting, seismic survey and engineering survey.
Background technology
Geophone has been widely used in field of seismic exploration such as oil field, coal.At some geographical environments abominable and oil gas store dark, than areas with complicated, the frequency characteristic of geophone, sensitivity, anti-interference, signal to noise ratio are had higher requirement.At present, at home and international oil gas, the geophone that uses in the seismic prospecting process in oil field is probed into know-why and method that it reduces the distortion factor all round the improvement of magnetic circuit.
Fig. 1 is the magnet assembly structural representation of the geophone of prior art, be following pole shoe, magnet vertically from bottom to top, go up pole shoe, the inner face of following pole shoe and last pole shoe is provided with boss, and magnet is with compensated loop outward, and the two ends of compensated loop are enclosed within down respectively on the boss of pole shoe and last pole shoe.
But by production practices for many years, prior art wants further effectively to reduce the geophone distortion degree has not had possibility.
Summary of the invention
Technical problem to be solved in the utility model is improved above-mentioned prior art, and a kind of geophone magnet assembly and low distortion geophone that is used for geological prospecting, seismic survey and engineering survey is provided.
The technical solution of the utility model is:
A kind of geophone magnet assembly, comprise pole shoe 14, following pole shoe 17, magnet 16, compensated loop 15, described magnet 16 embeds in the compensated loop 15, its special character is: the described inner face of going up pole shoe 14 is provided with annular groove 28, the described inner face of pole shoe 17 down is provided with down annular groove 29, and the two ends of described compensated loop 15 embed respectively in annular groove 28 and the following annular groove 29.
Above-mentioned compensated loop 15 is pyromagnetic compensator alloy material; Described magnet is the rare-earth Nd-Fe-B material; Described pole shoe is the soft magnetism permeability magnetic material.
A kind of geophone magnet assembly, comprise pole shoe 14, following pole shoe 17, magnet 16, compensated loop 15, described magnet 16 embeds in the compensated loop 15, its special character is: the described inner face of going up pole shoe 14 is provided with annular groove 28, the described inner face of pole shoe 17 down is provided with down annular groove 29, the two ends of described compensated loop 15 are provided with boss, and described boss embeds respectively in annular groove 28 and the following annular groove 29.
The lateral surface of above-mentioned compensated loop 15 is concordant with the lateral surface of last pole shoe 14 and following pole shoe 17.
Above-mentioned compensated loop 15 is pyromagnetic compensator alloy material; Described magnet is the rare-earth Nd-Fe-B material; Described pole shoe is the soft magnetism permeability magnetic material.
A kind of low distortion geophone comprises shell 21, upper top cover 2, following top cover 24, coasting body system, magnetic system; Described magnetic system comprises pole shoe 14, following pole shoe 17, magnet 16, compensated loop 15, described magnet 16 embeds in the compensated loop 15, its special character is: the described inner face of going up pole shoe 14 is provided with annular groove 28, the described inner face of pole shoe 17 down is provided with down annular groove 29, and the two ends of described compensated loop 15 embed respectively in annular groove 28 and the following annular groove 29.
Above-mentioned compensated loop 15 is pyromagnetic compensator alloy material; Described magnet is the rare-earth Nd-Fe-B material; Described pole shoe is the soft magnetism permeability magnetic material.
A kind of low distortion geophone comprises shell 21, upper top cover 2, following top cover 24, coasting body system, magnetic system; Described magnetic system comprises pole shoe 14, following pole shoe 17, magnet 16, compensated loop 15, described magnet 16 embeds in the compensated loop 15, its special character is: the described inner face of going up pole shoe 14 is provided with annular groove 28, the described inner face of pole shoe 17 down is provided with down annular groove 29, the two ends of described compensated loop 15 are provided with boss, and described boss embeds respectively in annular groove 28 and the following annular groove 29.
The lateral surface of above-mentioned compensated loop 15 is concordant with the lateral surface of last pole shoe 14 and following pole shoe 17.
Above-mentioned compensated loop 15 is pyromagnetic compensator alloy material; Described magnet is the rare-earth Nd-Fe-B material; Described pole shoe is the soft magnetism permeability magnetic material.
The utility model has the advantages that:
The even work magnetic field that the utility model magnet assembly offers geophone obtains further effectively extending, and the binding site stray magnetic field of magnet, pole shoe, compensated loop has been played the improvement effect, and is remarkable to reducing geophone distortion factor index effect.
Description of drawings
Fig. 1 is the structural representation of prior art geophone magnet assembly;
Fig. 2 is the structural representation of first kind of low distortion geophone of the utility model magnet assembly; Annular groove under pole shoe, 15-compensated loop, 16-magnet, the last annular groove of 28-, the 29-under the last pole shoe of number in the figure: 14-, the 17-;
Fig. 3 is the structural representation of second kind of low distortion geophone of the utility model magnet assembly; Annular groove under pole shoe, 15-compensated loop, 16-magnet, the last annular groove of 28-, the 29-under the last pole shoe of number in the figure: 14-, the 17-;
Fig. 4 is the structural representation of low distortion geophone of the present utility model; The last sealing ring of number in the figure: 1-, 2-upper top cover, the last snap ring of 3-, contact spring in 4-is last, 5-binding post, the 6-binding post, the last outer contacting reed of 7-, the last out-connecting contact pad of 8-, 9-insulating trip, 10-upper spring sheet, 11-upper spring sheet packing ring, the last coil holder of 12-, the last coil of 13-; The last pole shoe of 14-, 15-compensated loop, 16-magnet, pole shoe under the 17-, 18-lower coil, coil holder under the 19-, 20-lower spring sheet packing ring, 21-shell, 22-lower spring sheet, contact chip pad under the 23-, top cover under the 24-, contact chip under the 25-, snap ring under the 26-, 27-lower seal;
Fig. 5 is the structural representation of the low distortion geophone of second kind of geophone magnet assembly of the utility model.
Embodiment
First kind of geophone magnet assembly that the utility model provides, referring to Fig. 2, the interior magnetic inductive geophone that can be used for all structures, comprise pole shoe 14, following pole shoe 17, magnet 16, compensated loop 15, magnet 16 embeds in the compensated loop 15, the inner face of last pole shoe 14 is provided with annular groove 28, and the inner face of following pole shoe 17 is provided with down annular groove 29, and the two ends of compensated loop 15 embed respectively in annular groove 28 and the following annular groove 29.
Second kind of geophone magnet assembly that the utility model provides, referring to Fig. 3, the interior magnetic inductive geophone that also can be used for all structures, comprise pole shoe 14, following pole shoe 17, magnet 16, compensated loop 15, magnet 16 embeds in the compensated loop 15, and the inner face of last pole shoe 14 is provided with annular groove 28, and the inner face of following pole shoe 17 is provided with down annular groove 29, the two ends of compensated loop 15 are respectively arranged with boss, and boss embeds respectively in annular groove 28 and the following annular groove 29.For the better stray magnetic field of eliminating, the lateral surface of compensated loop 15 is preferably consistent with the external diameter of last pole shoe 14 and following pole shoe 17, and promptly the lateral surface of three kinds of parts is concordant.
Accordingly, the utility model provides two kinds of low distortion geophones based on above-mentioned geophone magnet assembly, first kind of low distortion geophone be referring to Fig. 4, comprise coil holder, go up coil, down coil holder, lower coil, magnet, insulating trip, go up pole shoe, down pole shoe, upper spring sheet, lower spring sheet, go up snap ring, down snap ring, upper top cover, down top cover, shell, binding post, go up in contact spring, go up the outer contacting reed; Magnet is with compensated loop outward, from bottom to top vertically, magnet 16 embeds in the compensated loop 15, and the inner face of last pole shoe 14 is provided with annular groove 28, the inner face of following pole shoe 17 is provided with down annular groove 29, and the two ends of compensated loop 15 embed respectively in annular groove 28 and the following annular groove 29; Last pole shoe upper surface is placed with insulating trip; From bottom to top vertically, following coil holder lower end is embedded with lower spring sheet and following snap ring; Following coil holder is wound with lower coil, and the middle part of following coil holder and last coil holder bonding can be wound with transfers heavy coil; Last coil holder is wound with coil; Last coil holder upper end is embedded with upper spring sheet and last snap ring; Magnetic system places in the coasting body system, by top cover, upper top cover (following top cover and upper top cover head into down respectively in the blind hole of pole shoe and last pole shoe) and shell are formed geophone down; Coasting body carries together by upper spring sheet on the coasting body and lower spring sheet in coasting body system in the geophone, relatively moves up and down with respect to magnetic system, receives vibration signal; Last coil and lower coil by positive and negative coiling on the coasting body, carry together by upper spring sheet and lower spring sheet, move up and down in annulus gap magnetic field with respect to magnetic system, receive vibration signal, cutting magnetic line, inducing with sensitivity is the signal of telecommunication of scalar index, by the circuit output of geophone; Two binding posts are respectively 2 electrodes of geophone signal of telecommunication output; The circuit loop of the signal of telecommunication is binding post soldering contact spring in last; Contact spring is again with last pole shoe, magnet, pole shoe, lower spring sheet contact in regular turn in succession down in going up; The lower wire end of lower spring sheet soldering lower coil; Coil holder was communicated with last coil lower wire end with the middle part (or transferring heavy coil surface) of last coil holder bonding under the leading-out terminal insulation was passed through on the lower coil; The leading-out terminal soldering is on the upper spring sheet on the last coil; The upper spring sheet is isolated by insulating trip and the insulation of last pole shoe, and contacts with last outer contacting reed; The soldering of last outer contacting reed is in binding post.The main distinction of second kind of low distortion geophone and first kind of low distortion geophone is that the two ends of compensated loop are respectively arranged with boss, and boss embeds respectively in annular groove and the following annular groove.Coil holder and the inboard no boss (following coil holder is identical with last coil holder internal diameter) in the middle part of last coil holder bonding under second kind of low distortion geophone.
The applicant has chosen 163 and has adopted the geophone of prior art core (to comprise the preceding initial value of 60 welding, data after 60 welding) and 129 geophones that adopt first kind of core of the utility model technology, test respectively, all geophones all adopt identical processing dimension, processing technology and material.
In the test data, the geophone of prior art obtain altogether excitation orientation be forward, oppositely, the 15 ° of forwards in inclination angle, the 15 ° of inversion conditions in inclination angle, 3708 groups of data down, it is 1037 groups of data under forward, reverse, 15 ° of forwards in inclination angle, the 15 ° of inversion conditions in inclination angle that the geophone of the utility model technology obtains excitation orientation altogether.Every group of data include test values such as resistance, frequency, damping, sensitivity, the distortion factor and impedance.
The distortion factor sees table in each scope proportion size:
As can be seen from the table: after adopting the utility model technology, obviously reduced geophone distortion index.
Claims (10)
1. geophone magnet assembly, comprise pole shoe (14), following pole shoe (17), magnet (16), compensated loop (15), described magnet (16) embeds in the compensated loop (15), it is characterized in that: the described inner face of going up pole shoe (14) is provided with annular groove (28), the described inner face of pole shoe (17) down is provided with down annular groove (29), and the two ends of described compensated loop (15) embed respectively in annular groove (28) and the following annular groove (29).
2. geophone magnet assembly according to claim 1 is characterized in that: described compensated loop (15) is pyromagnetic compensator alloy material; Described magnet is the rare-earth Nd-Fe-B material; Described pole shoe is the soft magnetism permeability magnetic material.
3. geophone magnet assembly, comprise pole shoe (14), following pole shoe (17), magnet (16), compensated loop (15), described magnet (16) embeds in the compensated loop (15), it is characterized in that: the described inner face of going up pole shoe (14) is provided with annular groove (28), the described inner face of pole shoe (17) down is provided with down annular groove (29), the two ends of described compensated loop (15) are provided with boss, and described boss embeds respectively in annular groove (28) and the following annular groove (29).
4. geophone magnet assembly according to claim 3 is characterized in that: the lateral surface of described compensated loop (15) is concordant with the lateral surface of last pole shoe (14) and following pole shoe (17).
5. according to claim 3 or 4 described geophone magnet assemblies, it is characterized in that: described compensated loop (15) is pyromagnetic compensator alloy material; Described magnet is the rare-earth Nd-Fe-B material; Described pole shoe is the soft magnetism permeability magnetic material.
6. a low distortion geophone comprises shell (21), upper top cover (2), following top cover (24), coasting body system, magnetic system; Described magnetic system comprises pole shoe (14), following pole shoe (17), magnet (16), compensated loop (15), described magnet (16) embeds in the compensated loop (15), it is characterized in that: the described inner face of going up pole shoe (14) is provided with annular groove (28), the described inner face of pole shoe (17) down is provided with down annular groove (29), and the two ends of described compensated loop (15) embed respectively in annular groove (28) and the following annular groove (29).
7. low distortion geophone according to claim 6 is characterized in that: described compensated loop (15) is pyromagnetic compensator alloy material; Described magnet is the rare-earth Nd-Fe-B material; Described pole shoe is the soft magnetism permeability magnetic material.
8. a low distortion geophone comprises shell (21), upper top cover (2), following top cover (24), coasting body system, magnetic system; Described magnetic system comprises pole shoe (14), following pole shoe (17), magnet (16), compensated loop (15), described magnet (16) embeds in the compensated loop (15), it is characterized in that: the described inner face of going up pole shoe (14) is provided with annular groove (28), the described inner face of pole shoe (17) down is provided with down annular groove (29), the two ends of described compensated loop (15) are provided with boss, and described boss embeds respectively in annular groove (28) and the following annular groove (29).
9. low distortion geophone according to claim 8 is characterized in that: the lateral surface of described compensated loop (15) is concordant with the lateral surface of last pole shoe (14) and following pole shoe (17).
10. according to Claim 8 or 9 described low distortion geophones, it is characterized in that: described compensated loop (15) is pyromagnetic compensator alloy material; Described magnet is the rare-earth Nd-Fe-B material; Described pole shoe is the soft magnetism permeability magnetic material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220661367 CN203103045U (en) | 2012-12-03 | 2012-12-03 | Geophone magnetic body component and low-distortion geophone |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220661367 CN203103045U (en) | 2012-12-03 | 2012-12-03 | Geophone magnetic body component and low-distortion geophone |
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| Publication Number | Publication Date |
|---|---|
| CN203103045U true CN203103045U (en) | 2013-07-31 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220661367 Withdrawn - After Issue CN203103045U (en) | 2012-12-03 | 2012-12-03 | Geophone magnetic body component and low-distortion geophone |
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| Country | Link |
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| CN (1) | CN203103045U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102938285A (en) * | 2012-12-03 | 2013-02-20 | 东莞市达耐美机电科技有限公司 | Geophone magnet component and low distortion geophone |
-
2012
- 2012-12-03 CN CN 201220661367 patent/CN203103045U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102938285A (en) * | 2012-12-03 | 2013-02-20 | 东莞市达耐美机电科技有限公司 | Geophone magnet component and low distortion geophone |
| WO2014086189A1 (en) * | 2012-12-03 | 2014-06-12 | 东莞市达耐美机电科技有限公司 | Geophone magnet component and low-distortion geophone |
| CN102938285B (en) * | 2012-12-03 | 2015-10-28 | 东莞市达耐美机电科技有限公司 | A kind of geophone magnet assembly and low distortion geophone |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20130731 Effective date of abandoning: 20151028 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |