CN201780379U - Geophysical exploration detection sensor - Google Patents
Geophysical exploration detection sensor Download PDFInfo
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- CN201780379U CN201780379U CN2010205264357U CN201020526435U CN201780379U CN 201780379 U CN201780379 U CN 201780379U CN 2010205264357 U CN2010205264357 U CN 2010205264357U CN 201020526435 U CN201020526435 U CN 201020526435U CN 201780379 U CN201780379 U CN 201780379U
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- detection sensor
- coil rack
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- coil former
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Abstract
The utility model relates to a seismic detection sensor, in particular to a geophysical exploration detection sensor. A resonance system is arranged in a magnetic circuit working air gap formed in an annular space between a permanent magnetic casing (10) and a cylindrical magnetic core. The resonance system comprises an upper spring plate and a lower spring plate (8) for suspending and supporting a coil rack, and coils wound on the coil rack (12), wherein the coil rack is in a three-sectional split adhered structure, two coils are respectively wound on the upper section and the lower section of the coil rack and connected in series, resonance signals are led out from two ends of a coil set, and a counterweight ring (13) made of brass is matched with and arranged on the periphery of the middle section of the coil rack (12). The counterweight ring is added between an upper coil rack and a lower coil rack of the geophysical exploration detection sensor, accordingly coupling of the sensor with earth and interference resistance of the sensor are increased, harmonic distortion is low, output detection signals can really reflect side information of geological structure, and the geophysical exploration detection sensor has the advantages of high precision, low distortion, low tolerance and high reliability.
Description
Technical field
The utility model relates to a kind of geophysical survey earthquake detection sensor.
Background technology
Earthquake detection sensor is a kind of seismic energy can being converted to and the corresponding voltage sensor of seimic wave velocity, be widely used in oil, coal, the geologic prospecting and the engineering survey of ore deposit industry etc.The common at present moving-coil velocity profile physical prospecting seismoreceiver that adopts, its structural principle is the resonator system that is provided with more intense spring leaf of the horizontal interference performance of an antagonism and coil composition in detector core body, this resonator system places the built-in magnet steel of wave detector cylindrical magnet shell and center thereof, in the magnetic circuit working gas gap that yoke etc. are formed, in when, on ground vibration taking place, be fixed in the wave detector shell movement therewith on ground, will produce the induction electromotive force of corresponding low distortion at the coil winding two ends, simultaneously induce eddy current at the aluminum coil former, this eddy current produces a damping force opposite with direction of motion in magnetic field, make resonator system do damped motion.The induction electromotive force of wave detector is directly proportional with the earthquake wave propagation velocity.
Whether performance and coil movement that the quality of seismoreceiver performance depends primarily on magnet steel usually are in the uniform magnetic field all the time, and speed-type geophone commonly used at present is owing to be subjected to the restriction of magnet steel performance and the defective effect in the magnetic structure design, closure is relatively poor, coil winding in the wave detector is not to move in uniform magnetic field fully, cause the wave detector anti-electromagnetic interference capability relatively poor, the output signal distortion is serious, precision is low, thereby the earthquake information data that the wave detector output signal is shown can not correctly obtain reflection.The ubiquitous defective of present wave detector is: dynamic range is less, has only 50-60 decibels; Degree of distortion is big, smaller or equal to 0.2%; Precision is low, have only ± 5%; Anti-horizontal interference performance is poor, greater than 200 hertz.
Summary of the invention
The utility model is at the prior art deficiency, propose a kind of geophysical survey detection sensor, coil former adopts split type three sections bonded structures, adds the counterweight ring between upper and lower two coil holders, thereby improved the coupling of sensor and the earth, greatly reduced the sensor total harmonic distortion.
The technical scheme that the utility model adopted:
A kind of geophysical survey detection sensor, between the top cover (16) of cylindrical magnet housing (10) and bottom (9), be provided with by last magnetic boots (4), magnet steel (14), the cylindricality magnetic core array that following magnetic boots (11) are formed, be provided with resonator system in the magnetic circuit working gas gap that annular space between described cylindrical magnet housing (10) and cylindricality magnetic core array constitutes, described resonator system comprises suspension, on the support coils frame, lower spring sheet (8) and the coil groups that is wrapped on the coil former (12) constitute, the resonator system output signal is drawn from coil groups, described coil former is a syllogic split bonded structure, wherein go up, following two sections respectively twine a coil, described two coils series connection, draw resonance signal from the coil groups two ends, periphery, stage casing and its coupling of described coil former (12) is provided with the counterweight ring (13) of brass material.
Described geophysical survey detection sensor, right cylinder magnet steel (14) diameter between upper and lower two the magnetic boots of cylindricality magnetic core array is less than magnetic boots diameter, around described right cylinder magnet steel, be provided with compensated loop (7), the outboard end of the upper and lower spring leaf of supported and suspended coil former hangs the upper/lower terminal with support and connection coil former (12) respectively, between the annular projection step of the opposite side end face setting that the medial extremity of upper and lower spring leaf mates the opposite side end face that is fixed on magnetic boots and top cover respectively and descends magnetic boots and bottom.
Useful good effect of the present utility model:
The utility model geophysical survey detection sensor, coil former adopts split type three sections bonded structures, between upper and lower two coil holders, add the counterweight ring, thereby improved the coupling and the antijamming capability of sensor and the earth, greatly reduce the sensor total harmonic distortion.Good with the coupling of the earth, total harmonic distortion is low, and the output rectified signal can more real reflection tectonic structure side data, has picked up and has explored required data designature, has high precision, low distortion, little tolerance, highly reliable characteristics.
Description of drawings
Fig. 1: the utility model geophysical survey detection sensor construction synoptic diagram.
Embodiment
Embodiment one: referring to Fig. 1, the utility model geophysical survey detection sensor, be provided with between the top cover 16 of cylindrical magnet housing 10 and the bottom 9 by on magnetic boots 4, magnet steel 14, the cylindricality magnetic core array that following magnetic boots 11 are formed, be provided with resonator system in the magnetic circuit working gas gap that annular space between permanent magnetism housing 10 and cylindricality magnetic core array constitutes, described resonator system comprises coil former 12, be wrapped in coil groups and suspension on the coil former 12, on the support coils frame, lower spring sheet 8 constitutes, on, the outboard end of lower spring sheet hang respectively with support and connection coil former 12 on, following two ends, on, between the annular projection step of the opposite side end face setting that the medial extremity of lower spring sheet mates the opposite side end face that is fixed on magnetic boots 4 and top cover 16 respectively and descends magnetic boots 11 and bottom 9, described coil former 12 is a syllogic split bonded structure, wherein go up, following two sections respectively twine a coil 6, described two coils series connection, resonator system output rectified signal is drawn from the coil groups two ends, and periphery, stage casing and its coupling of coil former 12 is provided with the counterweight ring 13 of brass material.
Among the figure, numbering 1 is an insulator, and 2 is insulating trip, and 3 is O-ring seal, and 7 is compensated loop, and 15 is jump ring.
Embodiment two: referring to Fig. 1.Present embodiment geophysical survey detection sensor, different with embodiment one is: the diameter of the right cylinder magnet steel 14 between upper and lower two the magnetic boots of cylindricality magnetic core array is provided with compensated loop 7 less than magnetic boots diameter around described right cylinder magnet steel around it.
Claims (2)
1. geophysical survey detection sensor, between the top cover (16) of cylindrical magnet housing (10) and bottom (9), be provided with by last magnetic boots (4), magnet steel (14), the cylindricality magnetic core array that following magnetic boots (11) are formed, be provided with resonator system in the magnetic circuit working gas gap that annular space between described cylindrical magnet housing (10) and cylindricality magnetic core array constitutes, described resonator system comprises suspension, on the support coils frame, lower spring sheet (8) and the coil groups that is wrapped on the coil former (12) constitute, the resonator system output signal is drawn from coil groups, it is characterized in that: described coil former is a syllogic split bonded structure, wherein go up, following two sections respectively twine a coil, described two coils series connection, draw resonance signal from the coil groups two ends, periphery, stage casing and its coupling of described coil former (12) is provided with the counterweight ring (13) of brass material.
2. geophysical survey wave detector according to claim 1, it is characterized in that: on the described cylindricality magnetic core array, the diameter of the right cylinder magnet steel (14) between following two magnetic boots is less than magnetic boots diameter, around described right cylinder magnet steel (14), be provided with compensated loop (7), on the supported and suspended coil former, the outboard end of lower spring sheet hang respectively with support and connection coil former (12) on, following two ends, on, between the annular projection step of the opposite side end face setting that the medial extremity of lower spring sheet mates the opposite side end face that is fixed on magnetic boots and top cover respectively and descends magnetic boots and bottom.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205264357U CN201780379U (en) | 2010-09-13 | 2010-09-13 | Geophysical exploration detection sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205264357U CN201780379U (en) | 2010-09-13 | 2010-09-13 | Geophysical exploration detection sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201780379U true CN201780379U (en) | 2011-03-30 |
Family
ID=43793590
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205264357U Expired - Fee Related CN201780379U (en) | 2010-09-13 | 2010-09-13 | Geophysical exploration detection sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201780379U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104199085A (en) * | 2014-09-17 | 2014-12-10 | 威海双丰物探设备股份有限公司 | Low-frequency detector |
| CN104321668A (en) * | 2012-04-04 | 2015-01-28 | 英洛瓦有限公司 | Devices and systems for controlling harmonic distortion in seismic sources |
-
2010
- 2010-09-13 CN CN2010205264357U patent/CN201780379U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104321668A (en) * | 2012-04-04 | 2015-01-28 | 英洛瓦有限公司 | Devices and systems for controlling harmonic distortion in seismic sources |
| CN104199085A (en) * | 2014-09-17 | 2014-12-10 | 威海双丰物探设备股份有限公司 | Low-frequency detector |
| CN104199085B (en) * | 2014-09-17 | 2017-02-15 | 威海双丰物探设备股份有限公司 | low-frequency detector |
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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: 20110330 Termination date: 20140913 |
|
| EXPY | Termination of patent right or utility model |