CN100363753C - Novel composite earthquake demodulator - Google Patents
Novel composite earthquake demodulator Download PDFInfo
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- CN100363753C CN100363753C CNB2004100262960A CN200410026296A CN100363753C CN 100363753 C CN100363753 C CN 100363753C CN B2004100262960 A CNB2004100262960 A CN B2004100262960A CN 200410026296 A CN200410026296 A CN 200410026296A CN 100363753 C CN100363753 C CN 100363753C
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- wave detector
- receiving set
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- nautical receiving
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Abstract
The present invention relates to a composite seismometer. The present invention is characterized in that the present invention is formed by successively connecting a sea hydrophone, a land wave detector component and a connector part, wherein the sea hydrophone is fixed in a shell at one end of a body, and the shell is made of acoustic transmission material; a piezoelectric ceramic wafer of the sea hydrophone right faces to the sound-wave receiving surface of the circular surface of the shell; a frequency modulation adaptor of the sea hydrophone is fixed to the upper part of the shell; the piezoelectric ceramic wafer of the sea hydrophone is electrically connected with the frequency modulation adaptor; a sleeve shell is arranged in the middle of the body, and a bracket is arranged in the sleeve shell and is supported by a left support ring and a right support ring; the land wave detector is arranged in a hole of the bracket; liquid damping oil is filled in a cavity of the sleeve shell; the other end of the body has the connector part of which the sealed end is provided with the signal output ends of a cable electrically connected with the sea hydrophone and the land wave detector. The new composite seismometer can simultaneously detect transverse wave component in water and submarine longitudinal wave component, and the detection accuracy for earthquake information can be improved.
Description
Affiliated technical field: the present invention relates to a kind of seismoreceiver, particularly about a kind of combined seismic wave detector.It belongs to the offshore geophysical prospecting fields of measurement.
Background technology:
At present, offshore shooting adopts the ocean nautical receiving set to explore usually, because the shear stress of water is zero, does not therefore have shear wave in seawater, has only compressional wave.Compressional wave changes at the interface of seabed and water, forms transformed wave, and the seismic signal of catching from the seabed is changed, and distortion phenomenon can appear in the specifying information data.Adopt conventional ocean nautical receiving set that the seabed is explored, can produce the bright spot of seismic data usually, it is generally acknowledged that the bright spot position is likely that rock gas exists, but often for above-mentioned reasons, provided false bright spot signal, influence the efficient that seismic data detects.
Summary of the invention:
The object of the present invention is to provide a kind of novel combined seismic wave detector,, increase the accuracy that earthquake information detects so that the primary seismic wave component that reaches simultaneously the shear component in the water, seabed has detection.
The object of the present invention is achieved like this: design a kind of novel combined seismic wave detector, it is characterized in that: it is connected and composed successively by ocean nautical receiving set, land geophone assembly, shank.
Described ocean nautical receiving set is fixed in the housing of body one end, and housing is the acoustic window material housing; The sound wave receiving plane that faces the housing disc of the piezoelectric ceramic piece of ocean nautical receiving set, the fixing frequency modulation adaptation of ocean nautical receiving set on the top of housing, the piezoelectric ceramic piece in the nautical receiving set of ocean is electrically connected with the frequency modulation adaptation; At the middle part of body is the cover cylinder shell, in the cover cylinder shell support is arranged, and two support rings supported about support passed through; The land wave detector is arranged in the hole of support; In the cavity of cover cylinder shell fluid damping oil is arranged; The other end at body has shank, and the seal head end of shank has cable to be electrically connected with ocean nautical receiving set and land geophone signal output terminal.
The cover cylinder shell two ends at described body middle part are connected with the ocean nautical receiving set with shank by left end socket and right end socket respectively.
In end socket and the junction of overlapping cylinder shell bilayer " O " shape O-ring seal is arranged.
Described land wave detector has two, and being fixed on of the first from left right side overlapped in the cylinder shell.
Described ocean nautical receiving set is bonded on the substrate by the multi-disc piezoelectric ceramic piece and constitutes, and substrate is fixed on the sympathetic response shell cavity, constitutes a resonant body.
Described ocean nautical receiving set is a sound pressure sensor.
Described land wave detector is the compressional wave wave detector.
Support in the described cover cylinder shell is the self-equilibrating support, and promptly support can carry out 360 ° around turning axle and rotates freely, and makes wave detector adjust to best reception state at any time.
The present invention has following advantage.
Because ocean nautical receiving set and land wave detector are combined with each other, this compound be not simple assembling, be to guarantee that in design two kinds of different wave detectors all can carry out work by working method separately.On same acceptance point, the seismic signal that stratum below the seabed is reflected is up received by sound pressure sensor, synchronous signal also can produce reflection on the sea, the signal of reflection also can be received by sensor, but because the reflected signal that the effect land wave detector of reflection receives is opposite with the original signal phase place, therefore in the Data Processing process,, can eliminate the reverberation that seismic signal produces between sea and seabed by the signal operation stack of land wave detector and sound pressure sensor.And can reduce the difficulty of construction like this, improve operating efficiency.Compound wave detector and subsea cable bundle constructs, and the subsea cable construction that is installed in towing cable inside with sensor has same high-level efficiency, but in the collection of signal, better than the signal reception of bottom streamer.It is main because the ocean nautical receiving set in the outside of cable, has reduced the decay of cable wall to signal.The land wave detector is placed on runing rest, can adjust the attitude of received signal at any time, remains on the optimum position.Inject damping liquid in housing, can improve antijamming capability to external world, extraneous interference can not cause that support produces excessive swing and influences the reception of seismic signal.For entering of the seepage that prevents liquid in the housing and extraneous seawater, ad hoc meter two seals circle seals.The sealing of first road mainly prevents entering of seawater, and the sealing of second road mainly prevents the seepage of damping liquid.Handle in ocean nautical receiving set and connecting of cable, adopt the outside mode of crossing line, in work progress, hung up, add a shell specially for compound wave detector, in order to protect line and ocean nautical receiving set for preventing line.Prevent of the injury of extraneous bump to the ocean nautical receiving set.
Description of drawings:
The present invention will be further described below in conjunction with the embodiment accompanying drawing.
Fig. 1 is an embodiment contour structures synoptic diagram.
Fig. 2 is an embodiment inner structure synoptic diagram.
Among the figure, 1, the ocean nautical receiving set; 2, land geophone assembly; 3, cover cylinder shell; 4, joint; 5, cable; 6, line; 7, back casing; 8, thimble; 9, wave detector; 10, wave detector; 11, support; 12, end socket; 13, end socket; 14, support ring; 15, support ring; 16, O RunddichtringO; 17, screw.
Embodiment:
Embodiment as shown in Figure 1, the general structure of compound wave detector is divided into three parts, be respectively the right ocean nautical receiving set 1, the land geophone assembly 2 at middle part and the shank 4 on the left side.Ocean nautical receiving set 1 is fixed in the housing 7; Land geophone assembly 2 is fixed in the cover cylinder shell 3; Ocean nautical receiving set 1 is electrically connected by the cable 5 that line 6 and joint 4 are drawn respectively with the land geophone assembly 2 at middle part, outwards output signal.
Fig. 2 is an embodiment inner structure synoptic diagram, as shown in Figure 2 in the housing 7 on the right, the ocean nautical receiving set of being made up of the multi-disc piezoelectric ceramics 1 is installed in the bottom of housing 7 (the right), ocean nautical receiving set 1 is that a resonance organ for resonance is a sound pressure sensor, the position, plane of housing 7 is the signal receiving plane of ocean nautical receiving set, guarantees that signal evenly is received; On the top of housing, the frequency matching device is installed, in order to adjust resonance frequency, make its seismic exploration requirement contentedly.The output of signal is electrically connected with cable 5 by line 6, makes signal output to water surface work apparatus.Fixedly the housing 7 of ocean nautical receiving set 1 has end socket 13 to be connected with cover between the cylinder shell 3, and end socket 13 usefulness encapsulants are packaged together, and line 6 also is packaged together with it.At the cover support 11 of packing in the cylinder shell 3, the land wave detector has two wave detectors 9 and wave detector 10, being installed on cover cylinder shell 3 inner supports 11 of their the first from left right sides, support 11 is fixed in cover cylinder shell 3 by bearing and support ring 14,15, support 11 can rotate freely by 360 degree, the reception attitude of adjusting wave detector 9 is an optimum condition, fills with damping oil in cover cylinder shell 3.Rotating shaft output is adopted in signal output, and two ends adopt end socket to encapsulate, and lead passes by the hole in the end socket, and the center pit in end socket 12 is the liquid filling orifice, after liquid is filled with, again with its sealing.Adopt " O " RunddichtringO 16 to seal at the two ends of sleeve.Adopt screw 17 that sleeve and end socket are linked together.Joint 4 is sealed with end socket 12, and thimble 8 is housed in the hole of end socket 12, and cable is through on the thimble in order to increase strength of joint.The output line of line 6 and land wave detector all is connected on the output line of cable.Joint guarantees and cable jacket is to combine together in encapsulation, increases sealing.
Among the present invention, be the needs according to the submarine operation, compound wave detector is bundled on the subsea cable, and enterprising line data signals collecting sinks to the bottom of the sea.Land wave detector by being positioned over the seabed is to the reception of seismic signal, and acquisition process can be distinguished true and false bright spot, reflects the submarine geology situation more accurately.Should be noted that present world's seismic prospecting forward high resolving power development, require wave detector to develop to high precision, broadband direction.And the present invention just is being based on this thought design.
Claims (1)
1. novel combined seismic wave detector, it is characterized in that: it is connected and composed successively by ocean nautical receiving set, land geophone assembly, shank; The ocean nautical receiving set is fixed in the housing of body one end, and housing is the acoustic window material housing; The sound wave receiving plane that faces the housing disc of the piezoelectric ceramic piece of ocean nautical receiving set, the fixing frequency modulation adaptation of ocean nautical receiving set on the top of housing, the piezoelectric ceramic piece in the nautical receiving set of ocean is electrically connected with the frequency modulation adaptation; At the middle part of body is the cover cylinder shell, in the cover cylinder shell support is arranged, and two support rings supported about support passed through; The land wave detector is arranged in the hole of support; In the cavity of cover cylinder shell fluid damping oil is arranged; The other end at body has shank, and the seal head end of shank has cable to be electrically connected with ocean nautical receiving set and land geophone signal output terminal; The cover cylinder shell two ends at body middle part are connected with the ocean nautical receiving set with shank by left end socket and right end socket respectively; In end socket and the junction of overlapping cylinder shell O-ring seal is arranged; The land wave detector has two, and being fixed on of the first from left right side overlapped on the interior support of cylinder shell; The ocean nautical receiving set is bonded on the substrate by the multi-disc piezoelectric ceramic piece and constitutes, and substrate is fixed on the sympathetic response shell cavity, constitutes a resonant body; The land wave detector is the compressional wave wave detector; The support of cover in the cylinder shell is the self-equilibrating support, and promptly support can carry out 360 ° around turning axle and rotates freely, and makes wave detector adjust to best reception state at any time.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100262960A CN100363753C (en) | 2004-06-28 | 2004-06-28 | Novel composite earthquake demodulator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100262960A CN100363753C (en) | 2004-06-28 | 2004-06-28 | Novel composite earthquake demodulator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1601302A CN1601302A (en) | 2005-03-30 |
| CN100363753C true CN100363753C (en) | 2008-01-23 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNB2004100262960A Expired - Fee Related CN100363753C (en) | 2004-06-28 | 2004-06-28 | Novel composite earthquake demodulator |
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Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101414011B (en) * | 2008-12-03 | 2011-06-22 | 天津海声水下探测设备有限公司 | Deep well piezoelectric detector |
| CN102967880A (en) * | 2012-11-09 | 2013-03-13 | 中国石油集团东方地球物理勘探有限责任公司 | Casing of double-detection detector |
| CN103163557B (en) * | 2013-03-27 | 2016-05-25 | 中国海洋石油总公司 | The multi-thread battle array of a kind of marine streamer acoustic positioning device |
| CN105115586B (en) * | 2015-05-28 | 2018-05-22 | 北京航天控制仪器研究所 | A kind of anti-static pressure gas back of the body mandrel type interference optical fiber hydrophone probe of self-balancing |
| CN105022087A (en) * | 2015-07-13 | 2015-11-04 | 赵东明 | Imminent earthquake sound detection method, earthquake sound probe implementing the method and application |
| CN105675119A (en) * | 2016-03-17 | 2016-06-15 | 西安陆洲智能传感技术有限公司 | Low-frequency underwater piezoelectric detector |
| US11506808B2 (en) * | 2019-04-10 | 2022-11-22 | Sercel | Ocean bottom node with removable acoustic pinger |
| CN111443382A (en) * | 2020-04-20 | 2020-07-24 | 中交铁道设计研究总院有限公司 | Amphibious seismic wave CT detection device |
| CN113552634B (en) * | 2021-07-07 | 2022-07-19 | 自然资源部第二海洋研究所 | Chain type submarine earthquake monitoring device |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4422164A (en) * | 1980-06-27 | 1983-12-20 | Mobil Oil Corporation | On-bottom seismometer electronic system |
| US4810913A (en) * | 1986-08-27 | 1989-03-07 | Institut Francais Du Petrole | Increased sensitivity piezoelectric hydrophones |
| CN2439034Y (en) * | 2000-08-24 | 2001-07-11 | 西安石油勘探仪器总厂 | Terrestrial piezoelectric ceramic seismic detector |
| CN2482101Y (en) * | 2001-06-29 | 2002-03-13 | 西安石油勘探仪器总厂 | Central control unit of 24-position remote sensing seismograph |
| CN1120377C (en) * | 2000-04-26 | 2003-09-03 | 西安石油勘探仪器总厂 | Drawn submarine four-component integral earthquake data collecting unit |
| WO2003096071A1 (en) * | 2002-05-10 | 2003-11-20 | Thales Underwater Systems Pty Limited | Improved seismic sensors |
| RU2231088C1 (en) * | 2003-05-26 | 2004-06-20 | Федеральное государственное унитарное предприятие "Всероссийский научно-исследовательский институт физико-технических и радиотехнических измерений" | Hydrophone |
-
2004
- 2004-06-28 CN CNB2004100262960A patent/CN100363753C/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4422164A (en) * | 1980-06-27 | 1983-12-20 | Mobil Oil Corporation | On-bottom seismometer electronic system |
| US4810913A (en) * | 1986-08-27 | 1989-03-07 | Institut Francais Du Petrole | Increased sensitivity piezoelectric hydrophones |
| CN1120377C (en) * | 2000-04-26 | 2003-09-03 | 西安石油勘探仪器总厂 | Drawn submarine four-component integral earthquake data collecting unit |
| CN2439034Y (en) * | 2000-08-24 | 2001-07-11 | 西安石油勘探仪器总厂 | Terrestrial piezoelectric ceramic seismic detector |
| CN2482101Y (en) * | 2001-06-29 | 2002-03-13 | 西安石油勘探仪器总厂 | Central control unit of 24-position remote sensing seismograph |
| WO2003096071A1 (en) * | 2002-05-10 | 2003-11-20 | Thales Underwater Systems Pty Limited | Improved seismic sensors |
| RU2231088C1 (en) * | 2003-05-26 | 2004-06-20 | Федеральное государственное унитарное предприятие "Всероссийский научно-исследовательский институт физико-технических и радиотехнических измерений" | Hydrophone |
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| CN1601302A (en) | 2005-03-30 |
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Granted publication date: 20080123 Termination date: 20100628 |