CN1031135A - Suspension type eddy seismonmeter - Google Patents
Suspension type eddy seismonmeter Download PDFInfo
- Publication number
- CN1031135A CN1031135A CN 87105424 CN87105424A CN1031135A CN 1031135 A CN1031135 A CN 1031135A CN 87105424 CN87105424 CN 87105424 CN 87105424 A CN87105424 A CN 87105424A CN 1031135 A CN1031135 A CN 1031135A
- Authority
- CN
- China
- Prior art keywords
- magnet
- sleeve
- vortex
- coil
- seismoreceiver
- 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.)
- Withdrawn
Links
Images
Landscapes
- Geophysics And Detection Of Objects (AREA)
- Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
Abstract
The present invention is a kind of seismoreceiver that land seismic prospecting is used that is suitable for, its inner inertia shaking system is made of three blocks of permanent magnets of longitudinally arranging, wherein as the main magnet of inertial mass suspend be arranged at up and down in the middle of two magnet and to each other same polarity dispose relatively, triangular acting force has constituted a pair of magnetic spring.Be provided with vortex sleeve outside inertia shaking system, vortex sleeve is wound with a pair of coil outward.
Description
The present invention is a kind of seismoreceiver that land seismic prospecting is used that is suitable for.
Seismoreceiver is a kind of device of sense vibrations, is to hang an inertia shaking system to form in a supporting structure that rigidly fixes.Conventional product has magnetoelectric seis, and as shown in Figure 1, its inertia shaking system is by pair of discs shape spring (14,16) and is suspended on therebetween one group of coil (9) formation.Coil is placed in the middle of the magnetic field boundary, and when earthquake took place, seismic event imported the earth's crust into, after the ripple that reflection comes arrives seismoreceiver, wave detector shell (6) and magnetic system rigidly connected with it are vibrated along with the vibration of ground surface, and at this moment, relative motion has taken place for coil and magnet (or shell).So just produce the alternation induced potential in coil, the electric signal of exporting according to wave detector just can carry out specificity analysis to geological condition.
Because seismoreceiver mainly is used for the sensing lengthwise movement, to the response of horizontal motion, promptly so-called transversal effect just must be managed elimination or reduced as far as possible, and conventional wave detector transversal effect is bigger.This wave detector than higher, is made the complex process of spring and wayward to the requirement of spring material, and furthermore because the rigidity of inertia shaking system medi-spring is to be difficult for regulating, quality is also determined, thereby the natural frequency of total system just is difficult for regulating.In addition, during the conventional relative magnet steel of magnetoelectric seis coil is kept in motion, generally be the output that realizes electric signal with elasticity slip ring (19) contact, this is not a kind of very reliable way for ultra-weak electronic signal.When a plurality of wave detectors linked together use, wave detector also was easy to generate electrical interference each other.
Japan OYO company once released a kind of eddy current seismometer, its structure as shown in Figure 2, mainly be between coil (9) and magnet (7), to set up the vortex sleeve (8) that a metallic conduction material is made, coil is maintained static with respect to shell, so can connect the electric signal output line with the way of welding, thereby improved the reliability of circuit communication, reduced the mutual electrical interference of wave detector.But because the vibrational system of this product inside is made of mechanical spring (14,16) and quality (vortex sleeve), material and processing technology require high, and transversal effect shortcoming big and that the vibrational system natural frequency can't be regulated still exists.
The objective of the invention is to according to remain in the existing seismoreceiver product weak point, provide a kind of New Type Seismic Geophone of improving the inner elastomeric device, in order to the performance that improves wave detector and the effect of seismic prospecting.
Technical solution of the present invention is as described below: form inertia shaking system by three blocks of permanent magnets of longitudinally arranging, wherein main magnet is suspended and be arranged at the centre of two magnet up and down, the polarity that makes the main magnet both ends of the surface polarity with two magnet inner side ends up and down respectively is identical, so the repulsion between two magnet and the main magnet has constituted a pair of magnetic spring up and down.When wave detector is subjected to time spent of doing of external seismic event, just make up-down vibration along vortex sleeve as the main magnet of vibrational system inertial mass.Because having produced relative motion between magnetic field boundary and main magnet and the vortex sleeve will induce alternation in vortex sleeve electromotive force, comes main magnet, this induction electromotive force forms closed alternation " vortex flow " in metal sleeve, just can produce alternation " eddy current magnetic field boundary ".The eddy current magnetic field boundary of alternation affacts on its coil on every side, can induce electromotive force again in coil.
As can be seen, the amplitude of eddy current magnetic field boundary is the function of speed of related movement between main magnet and the vortex sleeve in this device, induction electromotive force in the coil is again the function of eddy current magnetic field boundary to the coil pace of change, in the middle of this " two-stage effect " taken place, reached a conclusion thus: the electric signal that is generated in fixing wave detector coil is proportional to the acceleration of shell motion.
Fig. 3 is a structure cut-open view of the present invention.
With reference to Fig. 3, suspension type eddy seismonmeter from the lining and the table form by the inertia shaking system of coaxial setting, the vortex sleeve made from the metallic conduction material (8), the coil (9) that is wrapped in a pair of differential concatenation on the vortex sleeve (8) and shell (6) etc. successively, be respectively equipped with up-down adjustment sleeve (2,12) in the upper and lower of wave detector, be provided with end cap (1) topmost, on end cap (1), be provided with printed wire and extension line hole.Two magnet (4,10) are threaded with up-down adjustment sleeve (2,12) respectively by last lower magnetic box (3,11) up and down, make two ends be subjected to the main magnet (7) of repulsion effect to be suspended in central authorities.Vortex sleeve (8) and main magnet (7) are for precision is slidingly matched, in order to reduce the transversal effect of wave detector.
Compared with the prior art, the present invention has following features:
Elastic element in the present invention is the magnetic spring, and the rigidity of magnetic spring is convenient to regulate, so the just easily adjusting of the intrinsic frequency of system, can guarantee like this uniformity of a collection of wave detector intrinsic frequency. The magnetic spring is not than mechanical spring handling ease, and is tired, the life-span long, cost is also low.
Output characteristics of the present invention is that its high-frequency sensitivity increases along with increasing of driving frequency by square the increasing progressively of dynamic excitation frequency on intrinsic frequency. Decay sharp when the increase of high-frequency sensitivity helps to remedy high-frequency signal by overland propagation, thereby improved the resolution ratio of seismic prospecting.
Vortex sleeve in the suspension type eddy seismonmeter maintains static, and with inertial mass (main magnet) accurate cooperating is arranged, thereby has greatly reduced transversal effect.In addition, the damping of inertial mass is provided by vortex flow fully, and damping is not subjected to the influence of extraneous load, and no matter how wave detector is connected on the string, and damping remains constant.
Each label that accompanying drawing draws in the literary composition represents: 1, end cap; 2, adjusted sleeve; 3, upper magnetic box; 4, upper magnet; 5, feed-through collar; 6, shell; 7, main magnet; 8, vortex sleeve; 9, coil system; 10, lower magnet; 11, lower magnetic box; 12, lower regulating sleeve; 13, upper contact chip; 14, upper spring sheet; 15, lower contact chip; 16, lower spring sheet; 17, upper magnet yoke; 18, lower yoke; 19, slip ring; 20, jam nut; 21, bottom.
Claims (2)
1, a kind of seismoreceiver that is suitable for land seismic prospecting use, from the lining and table successively by the inertia shaking system of coaxial setting, the vortex sleeve made from the metallic conduction material (8), be wrapped in the coil (9) and the shell compositions such as (6) of a pair of differential concatenation on the vortex sleeve (8), the upper and lower of wave detector is respectively equipped with up-down adjustment sleeve (2,12), be provided with end cap (1) topmost, it is characterized in that described inertia shaking system is by three blocks of permanent magnets (4 of longitudinally arranging, 7,10) constitute, two magnet (4 wherein, 10) by last lower magnetic box (3,11) respectively with up-down adjustment sleeve (2,12) be threaded, main magnet (7) suspends and to be arranged at the centre of two magnet up and down, and the polarity of its both ends of the surface polarity with the interior inner side end of two magnet up and down respectively is identical.
2, seismoreceiver as claimed in claim 1 is characterized in that main magnet (7) and vortex sleeve (8) are slidingly matched for precision.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 87105424 CN1012220B (en) | 1987-08-03 | 1987-08-03 | Suspension type eddy seismonmeter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 87105424 CN1012220B (en) | 1987-08-03 | 1987-08-03 | Suspension type eddy seismonmeter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1031135A true CN1031135A (en) | 1989-02-15 |
| CN1012220B CN1012220B (en) | 1991-03-27 |
Family
ID=4815313
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 87105424 Expired CN1012220B (en) | 1987-08-03 | 1987-08-03 | Suspension type eddy seismonmeter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1012220B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102023309A (en) * | 2010-10-29 | 2011-04-20 | 谭成忠 | Maglev electromagnetic induction cymoscope |
| WO2016153509A1 (en) * | 2015-03-25 | 2016-09-29 | Halliburton Energy Services, Inc. | Geophone with magnetic self-damping system |
| CN106840367A (en) * | 2017-03-23 | 2017-06-13 | 北京航空航天大学 | A kind of floated low-frequency shock transducer of multiaxis |
| CN112147715A (en) * | 2020-08-23 | 2020-12-29 | 中铁十九局集团矿业投资有限公司 | Novel automatic-laid earthquake-electricity dual-purpose data acquisition device |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4309269A1 (en) * | 1993-03-23 | 1994-09-29 | Fromme Theo | Two-bucket gripper for making cylindrical bores |
-
1987
- 1987-08-03 CN CN 87105424 patent/CN1012220B/en not_active Expired
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102023309A (en) * | 2010-10-29 | 2011-04-20 | 谭成忠 | Maglev electromagnetic induction cymoscope |
| CN102023309B (en) * | 2010-10-29 | 2013-03-27 | 谭成忠 | Maglev electromagnetic induction cymoscope |
| WO2016153509A1 (en) * | 2015-03-25 | 2016-09-29 | Halliburton Energy Services, Inc. | Geophone with magnetic self-damping system |
| GB2552100A (en) * | 2015-03-25 | 2018-01-10 | Halliburton Energy Services Inc | Geophone with magnetic self-damping system |
| RU2658117C1 (en) * | 2015-03-25 | 2018-06-19 | Халлибертон Энерджи Сервисез, Инк. | Seismic receiver with magnetic oscillation damping system |
| AU2015387501B2 (en) * | 2015-03-25 | 2018-08-23 | Halliburton Energy Services, Inc. | Geophone with magnetic self-damping system |
| GB2552100B (en) * | 2015-03-25 | 2020-04-29 | Halliburton Energy Services Inc | Geophone with magnetic self-damping system |
| US10830916B2 (en) | 2015-03-25 | 2020-11-10 | Halliburton Energy Services, Inc. | Geophone with magnetic self-damping system |
| CN106840367A (en) * | 2017-03-23 | 2017-06-13 | 北京航空航天大学 | A kind of floated low-frequency shock transducer of multiaxis |
| CN106840367B (en) * | 2017-03-23 | 2020-04-03 | 北京航空航天大学 | Multi-shaft suspension type low-frequency vibration sensor |
| CN112147715A (en) * | 2020-08-23 | 2020-12-29 | 中铁十九局集团矿业投资有限公司 | Novel automatic-laid earthquake-electricity dual-purpose data acquisition device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1012220B (en) | 1991-03-27 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US3273397A (en) | Measurement of static force field gradients | |
| US2272984A (en) | Seismograph | |
| CN102023309B (en) | Maglev electromagnetic induction cymoscope | |
| US3067404A (en) | Vibration detector | |
| CN201852944U (en) | Magnetic suspension electromagnetic induction detector | |
| EP0100785B1 (en) | High-performance vibration filter | |
| EP0434702B1 (en) | A geophone system | |
| CN1049731C (en) | Absolute amplitude sensor | |
| US2562983A (en) | Frequency-adjustable seismic wave detector | |
| CN2047790U (en) | Suspended eddy-current-type geophone | |
| CN1031135A (en) | Suspension type eddy seismonmeter | |
| US3054085A (en) | Self-orienting geophone | |
| Benioff | Earthquake seismographs and associated instruments | |
| US4445371A (en) | Gravity meter and method | |
| US4603407A (en) | Rotational geophone | |
| US3065456A (en) | Self-orienting vibration detector | |
| US2756406A (en) | Vibration detector | |
| Zhang et al. | Dynamic characteristics of moving-coil geophone with large damping | |
| US3453870A (en) | Self-contained mass measurement system | |
| JP2805881B2 (en) | Vibration detector | |
| CN117471563B (en) | Suspension pendulum vibration isolation device, universal gravitation constant measuring device and measuring method thereof | |
| US2648055A (en) | Apparatus for detecting and recording measurements of seismic, gravitational, and other forces | |
| US2587346A (en) | Horizontal component lowfrequency geophone | |
| CN2205963Y (en) | Absolute amplitude sensor device | |
| Melton et al. | Inertial seismograph design-Limitations in principle and practice (or how not to build a sensitive seismograph) |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C06 | Publication | ||
| PB01 | Publication | ||
| C13 | Decision | ||
| GR02 | Examined patent application | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |