CN101424744A - Electric spark earthquake focus for ocean exploration - Google Patents
Electric spark earthquake focus for ocean exploration Download PDFInfo
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- CN101424744A CN101424744A CNA2008102392191A CN200810239219A CN101424744A CN 101424744 A CN101424744 A CN 101424744A CN A2008102392191 A CNA2008102392191 A CN A2008102392191A CN 200810239219 A CN200810239219 A CN 200810239219A CN 101424744 A CN101424744 A CN 101424744A
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Abstract
The invention relates to a sea exploration sparker source which comprises a discharging switch (5), a transmission cable (6), a discharge electrode (7) and a control circuit (8) and is characterized in that the sparker source also comprises a rectification filter circuit (1), a full-bridge inverter circuit (2), a high-voltage rectification circuit (3) and a storage capacitor group (4), wherein the rectification filter circuit (1) converts three-phase AC voltage into DC voltage, the storage capacitor group (4) is charged and can store electric energy, the transmission cable (6) is connected between the discharging switch (5) and the discharge electrode (7) to transmit the electric energy, the discharge electrode (7) is used for finishing the release of the electric energy, the conversion of the electric energy from sound energy is realized, and the control circuit (8) realizes the control triggering function and the safety protection function of the sparker source.
Description
Technical field
The present invention relates to a kind of geophysical prospecting equipment, particularly produce the electric spark earthquake focus for ocean exploration of pulsed sound with high pressure pulse discharge.
Background technology
Sparker source is as a kind of highpowerpulse sound source, with other pulse sound sources (as controlled sound source, the ultrasound wave sound source, the weight sound source, the air gun sound source, the explosive sound source) compares, have simple in structure, safety, energy is easy to control and regulates, firing time is accurate, the operating efficiency height, advantages such as power is big, in geologic prospecting, be used widely, ocean and ground electric spark-chock origin (the highest energy storage reaches 600kJ) as CAS Electrical Engineering Research Institute's development, the multi-electrode ocean high resolving power sparker source of Holland Geo-resources company etc., Chinese patent 85103629,01233188.0, etc.Its principle of work is that the energy that will be stored in the high-voltage capacitor group discharges the powerful pulse sound pressure wave of generation fast by high-voltage discharging switch, sparking electrode in water, again by receiving the reflected signal of sound wave in the stratum and can obtain the strata distribution situation after treatment, as the distribution of oil gas, coal and other mineral resources etc.
Chinese patent 85103629,01233188th is used for the land seismic prospecting, employing be power frequency conversion charging technique, gas discharge switch, the single electrode discharge mode, volume is big, the sound wave dominant frequency is low, inconvenience is regulated and safeguarded to switch.The multi-electrode ocean high resolving power sparker source of Geo-resources company adopts intermediate frequency resonant charging, and high pressure conversion is the oil immersed type structure partly, and volume is bigger, safeguards inconvenience.
Summary of the invention
The objective of the invention is to overcome the shortcoming of prior art such as power frequency or intermediate frequency charging, gas discharge switch, single electrode discharge etc.,, provide a kind of electric spark earthquake focus for ocean exploration at the special applications requirement of marine environment.The present invention adopts high frequency conversion constant-current charge technology, Dry-Transformer Technology, semiconductor switch technology and special transmission cable and discharge electrode structure, it is big to make focus have power, the reliability height is safeguarded simply, can satisfy the requirement of high resolution marine seismic exploration.
Electric spark earthquake focus for ocean exploration of the present invention is by current rectifying and wave filtering circuit, full bridge inverter, and high-voltage rectifier, the energy-storage capacitor group, discharge switch, transmission cable, sparking electrode, control circuit is formed.
Three-phase alternating current is through the three-phase commutation bridge of current rectifying and wave filtering circuit, be transformed to the direct current about 530 volts behind the filter capacitor, supply with full bridge inverter, full bridge inverter is made up of four switching power tubes, its output links to each other with the former limit of high frequency high voltage transformer behind the resonant capacitor of high-voltage rectifier, the secondary of high frequency high voltage transformer links to each other with the high-frequency and high-voltage rectifier bridge, two output terminals of high-frequency and high-voltage rectifier bridge link to each other with the energy-storage capacitor group respectively, the high-pressure side of energy-storage capacitor group is connected with the negative electrode of discharge switch, the low pressure end of energy-storage capacitor group links to each other with the outer conductor of transmission cable one end, the anode of discharge switch is connected with the inner wire of transmission cable one end, the inner wire of the transmission cable other end, outer conductor is connected with voltage electrode with the high-field electrode of sparking electrode respectively.Control circuit output drive control signal is given four switching power tubes of full bridge inverter, and triggers control signal and give discharge switch.
Good effect of the present invention is:
1 energy is big, and energy storage is adjustable continuously, the charge efficiency height, and adopt modular construction design, easy maintenance.
2 high-tension transformers adopt dry type not have oily structure, and volume is little, are convenient to safeguard.
3 discharge switches adopt semiconductor devices, and through-current capability is strong, the reliability height.
Description of drawings
Fig. 1 is that electric spark earthquake focus for ocean exploration structure of the present invention is formed synoptic diagram, among the figure: 1 current rectifying and wave filtering circuit, 2 full bridge inverters, 3 high-voltage rectifiers, 4 energy-storage capacitor groups, 5 discharge switches, 6 transmission cables, 7 sparking electrodes, 8 control circuits;
Fig. 2 is an electric spark earthquake focus for ocean exploration circuit diagram of the present invention, 2 full bridge inverters, 4 energy-storage capacitor groups, 5 discharge switches, 6 transmission cables, 7 sparking electrodes, 8 control circuits, 15 three-phase commutation bridges, 16 filter capacitors, 17 resonant capacitors, 18 high frequency high voltage transformers, 19 high-frequency and high-voltage rectifier bridges;
Fig. 3 is a transmission cable structural representation of the present invention, among the figure: 9 inner wires, 10 insulators, 11 armouring bodies, 12 outer conductors, 13 sheaths;
Embodiment
Describe content of the present invention in detail below in conjunction with the drawings and the specific embodiments.
As shown in Figure 1: electric spark earthquake focus for ocean exploration of the present invention comprises current rectifying and wave filtering circuit 1, full bridge inverter 2, and high-voltage rectifier 3, energy-storage capacitor group 4, discharge switch 5, transmission cable 6, sparking electrode 7, control circuit 8 is formed.Current rectifying and wave filtering circuit 1 is used for three-phase alternating voltage is transformed into DC voltage, and full bridge inverter 2 is used for DC voltage is reverse into high-frequency ac voltage, and high-voltage rectifier 3 is transformed into high voltage direct current to 4 chargings of energy-storage capacitor group with high-frequency ac voltage.Energy-storage capacitor group 4 is used for carrying out the storage of electric energy; compose in parallel energy-storage capacitor group 4 by many high-voltage capacitors; discharge switch 5 adopts semiconductor devices; transmission cable 6 adopts concentric cable; be connected between discharge switch 5 and the sparking electrode 7, carry out the transmission of electric energy, sparking electrode 7 is used for finishing the release of electric energy; realize the conversion of electric energy to acoustic energy, control circuit 8 is used for finishing the control triggering and the safety protection function of focus.
Fig. 2 is that circuit of the present invention is formed synoptic diagram, three-phase alternating current is through three ac input end inputs of the three-phase commutation bridge 15 of current rectifying and wave filtering circuit 1, two output terminals are respectively anode and negative terminal, and anode links to each other with the positive pole of filter capacitor 16, and negative terminal links to each other with the negative pole of filter capacitor 16.Three-phase alternating current is through being transformed to the direct current about 530 volts behind the current rectifying and wave filtering circuit 1, supply with full bridge inverter 2, full bridge inverter 2 is made up of four switching power tubes, link to each other with the positive pole of filter capacitor 16 after the collector of left upper end switching power tube links to each other with the collector of upper right side switching power tube, the negative pole of filter capacitor 16 linked to each other after the emitter of lower-left end switch power tube linked to each other with the emitter of bottom righthand side switching power tube.After linking to each other with the collector of lower-left end switch power tube, the emitter of left upper end switching power tube links to each other with an end of resonant capacitor 17, the other end of resonant capacitor 17 links to each other with an end on the former limit of high frequency high voltage transformer 18, and the emitter of the upper right side switching power tube back that links to each other with the collector of bottom righthand side switching power tube links to each other with the other end on the former limit of high frequency high voltage transformer 18.The secondary two ends of high frequency high voltage transformer 18 link to each other with two input ends of high-frequency and high-voltage rectifier bridge 19 respectively, and high frequency high voltage transformer 18 adopts dry type not have oily structure.Two output terminals of the negative, positive of high-frequency and high-voltage rectifier bridge 19 link to each other with low pressure end with the high-pressure side of energy-storage capacitor group 4 respectively, and energy-storage capacitor group 4 is composed in parallel by many energy-storage capacitors, and the high-pressure side of all energy-storage capacitors connects together, and low pressure end connects together.The high-pressure side of energy-storage capacitor group 4 is connected with the negative electrode of discharge switch 5, the low pressure end of energy-storage capacitor group 4 links to each other with the outer conductor 12 of transmission cable 6 one ends, the anode of discharge switch 5 is connected with the inner wire 9 of transmission cable 6 one ends, and the inner wire 9 of transmission cable 6 other ends is connected with the high-field electrode of sparking electrode 7, outer conductor 12 is connected with the voltage electrode of sparking electrode 7.Control circuit 8 output two-way drive control signal, the anode of one road signal and negative terminal are connected respectively to the base stage and the emitter of two switching power tubes in upper left and bottom right of full bridge inverter 2, the anode of another road signal and negative terminal are connected respectively to the base stage and the emitter of two switching power tubes in upper right and lower-left of full bridge inverter 2, control circuit 8 outputs one tunnel trigger control signal, the signal anode is connected to the trigger electrode of discharge switch 5, and the signal negative terminal is connected to the negative electrode of discharge switch 5.
Fig. 3 is a transmission cable structural representation of the present invention, adopts coaxial configuration, is followed successively by inner wire 9 from inside to outside, insulator 10, armouring body 11, outer conductor 12, sheath 13, described inner wire 9, insulator 10, armouring body 11, outer conductor 12, being centered close on the same axis of sheath 13.Inner wire 9 adopts for example copper one-tenth of metal material.Insulator 10 employing insulating material for example high density polyethylene are made.Armouring body 11 employing insulating material for example aramid fiber are made, and are used for improving the tensile strength of cable.Outer conductor 12 adopts for example copper one-tenth of metal material.Sheath 13 employing insulating material for example polyurethane are made.
The specific embodiment of the invention is as follows: the maximum energy storage 20-40 of focus kJ (kilojoule), and adjustable continuously, 5 kilovolts of energy-storage capacitor group maximum operating voltages, discharge switch adopts high-voltage thyristor.Four of transmission cables, every is about 80-100 rice, and sparking electrode divides four groups, and 400 of every group of high-field electrode numbers can be selected suitable sparking electrode according to the energy grade that reality is used.The focus charge rate is greater than 4 kJ (kilojoule)/seconds, the highest discharge repetition frequency 12 times/minute.
The course of work of the present invention is as follows: three-phase alternating-current supply charges to energy-storage capacitor group 4 behind current rectifying and wave filtering circuit 1, full bridge inverter 2, high-voltage rectifier 3; when being charged to prevalue; available manual or remote control mode triggering discharge switch 5 conductings; the electric energy that energy-storage capacitor group 4 stores is through sparking electrode 7 discharges of transmission cable 6 by placing water; produce pulsed sound, control circuit 8 is used for finishing the control triggering and the safety protection function of focus.
The present invention can be applicable to fields such as offshore shooting as pulse sound source.
Claims (3)
1, a kind of electric spark earthquake focus for ocean exploration comprises discharge switch (5), transmission cable (6), sparking electrode (7), control circuit (8) is characterized in that, this focus also comprises current rectifying and wave filtering circuit (1), full bridge inverter (2), high-voltage rectifier (3) and energy-storage capacitor group (4); Current rectifying and wave filtering circuit (1) is transformed into DC voltage with three-phase alternating voltage; Full bridge inverter (2) is reverse into high-frequency ac voltage with DC voltage; High-voltage rectifier (3) is transformed into high voltage direct current with high-frequency ac voltage, charges to energy-storage capacitor group (4); Energy-storage capacitor group (4) is carried out the storage of electric energy; Transmission cable (6) is connected between discharge switch (5) and the sparking electrode (7), carries out the transmission of electric energy; Sparking electrode (7) is used for finishing the release of electric energy, realizes the conversion of electric energy to acoustic energy; Control circuit (8) is realized the control triggering and the safety protection function of focus.
2, according to the described electric spark earthquake focus for ocean exploration of claim 1, it is characterized in that, three-phase alternating current is supplied with described full bridge inverter (2) through three-phase commutation bridge (15), filter capacitor (16) back of described current rectifying and wave filtering circuit (1), the output of described full bridge inverter (2) links to each other with the former limit of high frequency high voltage transformer (18) behind resonant capacitor (17), the secondary of high frequency high voltage transformer (18) links to each other with high-frequency and high-voltage rectifier bridge (19), and high frequency high voltage transformer (18) adopts dry type not have oily structure; Two output terminals of high-frequency and high-voltage rectifier bridge (19) link to each other with described energy-storage capacitor group (4), the high-pressure side of described energy-storage capacitor group (4) is connected with the negative electrode of described discharge switch (5), the low pressure end of described energy-storage capacitor group (4) links to each other with the outer conductor (12) of described transmission cable (6) one ends, the anode of described discharge switch (5) is connected with the inner wire (9) of described transmission cable (6) one ends, the inner wire (9) of described transmission cable (6) other end is connected with the high-field electrode of described sparking electrode (7), and outer conductor (12) is connected with the voltage electrode of described sparking electrode (7); Described control circuit (8) output drive control signal is given four switching power tubes of described full bridge inverter (2), and triggers control signal and give described discharge switch (5).
According to the described electric spark earthquake focus for ocean exploration of claim 1, it is characterized in that 3, transmission cable (6) adopts coaxial configuration, be followed successively by inner wire (9) from inside to outside, insulator (10), armouring body (11), outer conductor (12), sheath (13), inner wire (9), insulator (10), armouring body (11), outer conductor (12), being centered close on the same axis of sheath (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CNA2008102392191A CN101424744A (en) | 2008-12-04 | 2008-12-04 | Electric spark earthquake focus for ocean exploration |
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| CNA2008102392191A CN101424744A (en) | 2008-12-04 | 2008-12-04 | Electric spark earthquake focus for ocean exploration |
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| CN101424744A true CN101424744A (en) | 2009-05-06 |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101984548A (en) * | 2010-07-26 | 2011-03-09 | 香港脑泰科技有限公司 | Pulse high voltage generator |
| CN102830638A (en) * | 2012-07-31 | 2012-12-19 | 湘潭无线电有限责任公司 | Controllable electric spark seismic source circuit |
| CN103021400A (en) * | 2013-01-11 | 2013-04-03 | 中国人民解放军国防科学技术大学 | Two-stage power supply type submarine spark acoustic source |
| CN103207411A (en) * | 2013-03-15 | 2013-07-17 | 北京工业大学 | Electromagnetic exploration transmitting system based on super capacitor energy storage |
| CN103543650A (en) * | 2013-10-21 | 2014-01-29 | 长江大学 | Portable electric spark source and control method thereof |
| CN105242184A (en) * | 2015-10-28 | 2016-01-13 | 西安旭之辉机电科技有限公司 | Power cable fault secondary flashover detection device |
| CN106932815A (en) * | 2017-05-06 | 2017-07-07 | 中国海洋大学 | Ocean high-resolution system vertical array spark source |
| CN108107483A (en) * | 2017-12-27 | 2018-06-01 | 国家海洋局第海洋研究所 | A kind of seismic survey system based on underwater movable platform |
| WO2018209838A1 (en) * | 2017-05-18 | 2018-11-22 | 国家海洋局第一海洋研究所 | System for detecting hydrates near seafloor |
| CN109407145A (en) * | 2018-12-10 | 2019-03-01 | 中国电建集团贵阳勘测设计研究院有限公司 | Automatic control electric spark source device applied to engineering investigation and detection field |
| CN114465502A (en) * | 2022-01-11 | 2022-05-10 | 深圳市德拜科技有限公司 | Seismic source energy adjusting circuit, control method and electronic equipment |
-
2008
- 2008-12-04 CN CNA2008102392191A patent/CN101424744A/en active Pending
Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101984548A (en) * | 2010-07-26 | 2011-03-09 | 香港脑泰科技有限公司 | Pulse high voltage generator |
| CN102830638A (en) * | 2012-07-31 | 2012-12-19 | 湘潭无线电有限责任公司 | Controllable electric spark seismic source circuit |
| CN103021400A (en) * | 2013-01-11 | 2013-04-03 | 中国人民解放军国防科学技术大学 | Two-stage power supply type submarine spark acoustic source |
| CN103207411A (en) * | 2013-03-15 | 2013-07-17 | 北京工业大学 | Electromagnetic exploration transmitting system based on super capacitor energy storage |
| CN103207411B (en) * | 2013-03-15 | 2015-08-05 | 北京工业大学 | A kind of electromagnetic survey emission coefficient based on ultracapacitor energy storage |
| CN103543650A (en) * | 2013-10-21 | 2014-01-29 | 长江大学 | Portable electric spark source and control method thereof |
| CN103543650B (en) * | 2013-10-21 | 2016-04-27 | 长江大学 | Portable electric spark source and control method thereof |
| CN105242184A (en) * | 2015-10-28 | 2016-01-13 | 西安旭之辉机电科技有限公司 | Power cable fault secondary flashover detection device |
| CN106932815A (en) * | 2017-05-06 | 2017-07-07 | 中国海洋大学 | Ocean high-resolution system vertical array spark source |
| CN106932815B (en) * | 2017-05-06 | 2023-07-21 | 中国海洋大学 | Marine high-resolution stereoscopic vertical array electric spark seismic source |
| WO2018209838A1 (en) * | 2017-05-18 | 2018-11-22 | 国家海洋局第一海洋研究所 | System for detecting hydrates near seafloor |
| CN108107483A (en) * | 2017-12-27 | 2018-06-01 | 国家海洋局第海洋研究所 | A kind of seismic survey system based on underwater movable platform |
| CN108107483B (en) * | 2017-12-27 | 2023-08-11 | 国家海洋局第一海洋研究所 | Seismic prospecting system based on underwater mobile platform |
| CN109407145A (en) * | 2018-12-10 | 2019-03-01 | 中国电建集团贵阳勘测设计研究院有限公司 | Automatic control electric spark source device applied to engineering investigation and detection field |
| CN109407145B (en) * | 2018-12-10 | 2024-02-13 | 中国电建集团贵阳勘测设计研究院有限公司 | Automatic control electric spark vibration source device |
| CN114465502A (en) * | 2022-01-11 | 2022-05-10 | 深圳市德拜科技有限公司 | Seismic source energy adjusting circuit, control method and electronic equipment |
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Open date: 20090506 |