CN202049240U - Deep dragging split type pulse plasma seismic source system - Google Patents
Deep dragging split type pulse plasma seismic source system Download PDFInfo
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- CN202049240U CN202049240U CN2011200222193U CN201120022219U CN202049240U CN 202049240 U CN202049240 U CN 202049240U CN 2011200222193 U CN2011200222193 U CN 2011200222193U CN 201120022219 U CN201120022219 U CN 201120022219U CN 202049240 U CN202049240 U CN 202049240U
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Abstract
The present utility model discloses a deep dragging split type pulse plasma seismic source system. The system comprises a direct current charging unit, a high voltage pulse unit and an emission array. By placing the direct current charging unit on the sea surface, placing the high voltage pulse unit and the emission array near the seabed, and connecting the direct current charging unit with the high voltage pulse unit through a dragging transmission line, the resolution of deep sea exploration of the seismic source can be obviously increased, an ultrahigh resolution is even reached, and the pulse transmission loss is greatly reduced. Thus, the system has good application prospects in sea seismic prospecting and the exploration and exploitation of mineral reserves, such as seabed inflammable ice.
Description
Technical field
The utility model belongs to seismic prospecting development technique field, be specifically related to a kind of be used for the exploitation of offshore shooting and mineral reserve drag separated type pulsed plasma Seismic Source System deeply.
Background technology
Sparker source is one of non-explosive source that is applied to the earliest offshore shooting.Yet, because the poor repeatability of traditional electrical spark source wavelet, so sparker source is just progressively substituted by other focus.In recent years, there is not the application of arc discharge emission battle array along with the appearance of high-power semiconductor switch and multi-electrode, the pulsed discharge focus is applied to oceanographic engineering seismic exploration technique field again, in order to be different from traditional sparker source, the pulsed discharge focus is referred to as the pulsed plasma Seismic Source System again.
The pulsed plasma Seismic Source System mainly comprises the pulse power (comprising charhing unit and pulse unit) and emission battle array.Compare with traditional sparker source, the pulsed plasma Seismic Source System has source wavelet good reproducibility, energy transmission efficiency height, safe and reliable, advantage such as the life-span is long.The pulsed plasma Seismic Source System is used for the seismic prospecting of oceanographic engineering more, can arrive between thousands of joules tens according to the difference of requirements such as the depth of water, substrate type, required stratum penetration depth, the output energy of focus, penetration depth can reach 100m～250m, and can reach the resolution of 0.3m～1m.
Conventional pulsed plasma Seismic Source System places the sea by launching the battle array towing, the pulse power is positioned on the ship, and be that 50 meters to 100 meters pulse transmission line links to each other both with length, to carry out offshore shooting.But because the difference of the depth of water, its exploration resolution also is different.For profundal zone (greater than 500 meters), because propagation distance is far away, the first Fresnel zone radius is bigger, and its real standard resolution is difficult to reach below 1 meter, thereby has restricted the precision of offshore shooting.
Summary of the invention
The utility model provides a kind of separated type pulsed plasma Seismic Source System of dragging deeply, it adopts the technology of splitting of dragging deeply, can obviously improve the resolution of Seismic Source System deep-sea exploration, even reach ultrahigh resolution, and overcome effectively and drag the burst transmissions loss problem of being brought deeply.
A kind of separated type pulsed plasma Seismic Source System of dragging deeply comprises DC charging unit, high-voltage pulse unit and emission battle array.
Described DC charging unit is used for alternating current is converted to high voltage direct current, and the high-voltage pulse unit is charged, and it places on the sea;
Described high-voltage pulse unit is used for the high voltage direct current that the DC charging unit provides is converted to high-voltage pulse, and to the discharge of emission battle array, it places near the seabed;
Described DC charging unit is connected by the towing transmission line with described high-voltage pulse unit;
Described emission battle array is used to receive the high pressure pulse discharge of high-voltage pulse unit, makes emitting electrode neighbouring seawater gasification, ionization form High Temperature High Pressure pulse hot plasma, and produces pulsed pressure wave, and it places near the seabed.
Principle of work of the present utility model is: by the towing transmission line DC charging unit is linked to each other with the high-voltage pulse unit, the high-voltage pulse unit is linked to each other with emission battle array and place near the seabed, deep-sea by the high-voltage pulse transmission line, drag separated type pulsed plasma Seismic Source System deeply thereby be combined into.The DC charging unit is converted to high voltage direct current with individual event or three-phase alternating current, and charge by the towing storage capacitor of transmission line in the high-voltage pulse unit, after charging is finished, the conducting that is triggered of transwitch in the high-voltage pulse unit, thereby the generation high-voltage pulse also is loaded on the electrode of emission battle array, make near seawater gasification, the ionization of emitting electrode of emission battle array form High Temperature High Pressure pulse hot plasma, thereby produce pulsed pressure wave.
In the optimized technical scheme, described towing transmission line is the photoelectricity composite transmission line, its hv transmission line and signal light transmission cable by sub-thread or multiply is formed, can not only guarantee the reliability of high-tension current transmission, simultaneously can make described high-voltage pulse unit and external signal treatment facility carry out communication and data transmission again, make things convenient for the staff to monitor the related data information of high-voltage pulse unit in real time.
In the optimized technical scheme, described towing transmission line is wound on the electric winch, by electric winch work, can conveniently control the towing degree of depth of described high-voltage pulse unit and described emission battle array, and then the exploration resolution of regulating system.
In the optimized technical scheme, described high-voltage pulse unit is deposited in the high-pressure chamber, can make high-voltage pulse unit internal components avoid hydraulic pressure and impact and be damaged.
In the optimized technical scheme, described emission battle array is linear array or square formation.
In the optimized technical scheme, described DC charging unit adopts switching power circuit.
In the optimized technical scheme, described to drag the operating frequency range of separated type pulsed plasma Seismic Source System deeply be 500Hz to 10kHz.
Useful technique effect of the present utility model is:
(1) by adopting the technology of dragging deeply, will launch battle array and place near the seabed, can obviously improve the resolution of Seismic Source System deep-sea exploration, even reach ultrahigh resolution.
(2) by DC charging unit and high-voltage pulse unit being split (be the high-voltage pulse unit close put) with the emission battle array, shortened the length of high-voltage pulse transmission line, thereby reduced the burst transmissions loss greatly.
(3) be wound on the electric winch by pulling transmission line, make electric winch work, can conveniently control the high-voltage pulse unit and the towing degree of depth of launching battle array.
(4) make the high-voltage pulse unit carry out communication and data transmission, make things convenient for the staff to monitor the related data information of high-voltage pulse unit in real time by signal light transmission cable and external signal treatment facility.
Description of drawings
Fig. 1 is a system architecture synoptic diagram of the present utility model.
Fig. 2 is a system principle synoptic diagram of the present utility model.
Embodiment
In order more specifically to describe the utility model, the technical solution of the utility model and relative theory are elaborated below in conjunction with the drawings and the specific embodiments.
As shown in Figure 1, a kind of separated type pulsed plasma Seismic Source System of dragging deeply comprises DC charging unit 4, high-voltage pulse unit 3, photoelectricity composite transmission line 2, emission battle array 1, high-pressure chamber 6 and electric winch 5.
DC charging unit 4 adopts switching power circuit, be used for individual event or three-phase alternating current be converted to high voltage direct current (2kV～-6kV), and the storage capacitors in the high-voltage pulse unit 3 are charged, it places on the ship, and links to each other with high-voltage pulse unit 3 by photoelectricity composite transmission line 2.
High-voltage pulse unit 3 is made up of solid-state storage capacitor, transwitch, thyristor gating circuit, fly-wheel diode and high-voltage pulse transmission line, be used for the high voltage direct current that DC charging unit 4 provides is converted to high-voltage pulse, and to 1 discharge of emission battle array, it places near the seabed, and link to each other with emission battle array 1 by the high-voltage pulse transmission line, impact and be damaged in order to make internal components avoid hydraulic pressure, high-voltage pulse unit 3 is deposited in the high-pressure chamber 6.
Photoelectricity composite transmission line 2 is made up of the hv transmission line and the signal light transmission cable of sub-thread or multiply, can not only guarantee the reliability of high-tension current transmission, can make simultaneously high-voltage pulse unit 3 and external signal treatment facility carry out communication and data transmission again, make things convenient for the staff to monitor the related data information of high-voltage pulse unit 3 in real time.
Photoelectricity composite transmission line 2 is wound on the electric winch 5, and electric winch 5 is placed on the ship, by electric winch 5 work, can conveniently control the high-voltage pulse unit 3 and the towing degree of depth of launching battle array 1.
As shown in Figure 2, the DC charging unit is converted to individual event or three-phase alternating current-and 2kV is to the high voltage direct current of-6kV, and charge by the solid-state storage capacitor of photoelectricity composite transmission line in the high-voltage pulse unit, after charging is finished, the conducting that is triggered of the transwitch in the high-voltage pulse unit.The application of transwitch and fly-wheel diode can realize the monopulse output of high-voltage pulse unit.
The discharge process of high-voltage pulse unit can be divided into two stages basically.Phase one is the capacitor discharge stage, be loaded into high-voltage pulse on the electrode of emission battle array this moment, electric current flow through solid-state storage capacitor, transwitch, high-voltage pulse transmission line and emitting electrode, electric capacity discharges all energy, a part that releases energy is used to make emission paroxysm radio extremely neighbouring seawater gasification, ionization to form High Temperature High Pressure pulse hot plasma, and another part is stored in the inductance of discharge loop; Subordinate phase is the inductive discharge stage, electric capacity this moment discharge off, and transwitch cuts out, electric current flow through fly-wheel diode, high-voltage pulse transmission line and emitting electrode, thus eliminate current oscillation, realize the monopulse discharge.
Drag separated type pulsed plasma Seismic Source System by adopting the technology of dragging deeply deeply, will launch battle array and place near the seabed, can obviously improve the resolution of Seismic Source System deep-sea exploration, even reach ultrahigh resolution; By DC charging unit and high-voltage pulse unit being split (be the high-voltage pulse unit close put) with the emission battle array, shortened the length of high-voltage pulse transmission line, the inductance and the internal resistance of discharge loop are reduced greatly, thereby reduced loss greatly, made the utility model in mineral explorations such as offshore shooting and seabed combustible ice exploitation, good application prospects be arranged.
Claims (7)
1. the dark separated type pulsed plasma Seismic Source System of dragging comprises DC charging unit, high-voltage pulse unit and emission battle array, it is characterized in that:
Described DC charging unit is used for alternating current is converted to high voltage direct current, and the high-voltage pulse unit is charged, and it places on the sea;
Described high-voltage pulse unit is used for the high voltage direct current that the DC charging unit provides is converted to high-voltage pulse, and to the discharge of emission battle array, it places near the seabed;
Described DC charging unit is connected by the towing transmission line with described high-voltage pulse unit;
Described emission battle array is used to receive the high pressure pulse discharge of high-voltage pulse unit, makes emitting electrode neighbouring seawater gasification, ionization form High Temperature High Pressure pulse hot plasma, and produces pulsed pressure wave, and it places near the seabed.
2. the separated type pulsed plasma Seismic Source System of dragging deeply according to claim 1, it is characterized in that: described towing transmission line is the photoelectricity composite transmission line, its hv transmission line and signal light transmission cable by sub-thread or multiply is formed.
3. the separated type pulsed plasma Seismic Source System of dragging deeply according to claim 1 and 2, it is characterized in that: described towing transmission line is wound on the electric winch.
4. the separated type pulsed plasma Seismic Source System of dragging deeply according to claim 1, it is characterized in that: described high-voltage pulse unit is deposited in the high-pressure chamber.
5. the separated type pulsed plasma Seismic Source System of dragging deeply according to claim 1 is characterized in that: described emission battle array is linear array or square formation.
6. the separated type pulsed plasma Seismic Source System of dragging deeply according to claim 1 is characterized in that: described DC charging unit adopts switching power circuit.
7. the separated type pulsed plasma Seismic Source System of dragging deeply according to claim 1, it is characterized in that: operating frequency range is 500Hz to 10kHz.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200222193U CN202049240U (en) | 2011-01-24 | 2011-01-24 | Deep dragging split type pulse plasma seismic source system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200222193U CN202049240U (en) | 2011-01-24 | 2011-01-24 | Deep dragging split type pulse plasma seismic source system |
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| CN202049240U true CN202049240U (en) | 2011-11-23 |
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| CN2011200222193U Expired - Fee Related CN202049240U (en) | 2011-01-24 | 2011-01-24 | Deep dragging split type pulse plasma seismic source system |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102176051A (en) * | 2011-01-24 | 2011-09-07 | 浙江大学 | Deep-towed split-type pulse plasma source system |
| CN107966735A (en) * | 2017-12-27 | 2018-04-27 | 国家海洋局第海洋研究所 | A kind of sonic source device 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 |
-
2011
- 2011-01-24 CN CN2011200222193U patent/CN202049240U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102176051A (en) * | 2011-01-24 | 2011-09-07 | 浙江大学 | Deep-towed split-type pulse plasma source system |
| CN102176051B (en) * | 2011-01-24 | 2013-06-05 | 浙江大学 | Deep-towed split-type pulse plasma source system |
| 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 |
| CN107966735A (en) * | 2017-12-27 | 2018-04-27 | 国家海洋局第海洋研究所 | A kind of sonic source device based on underwater movable platform |
| CN107966735B (en) * | 2017-12-27 | 2023-09-08 | 国家海洋局第一海洋研究所 | Sound source device based on underwater mobile platform |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20111123 Termination date: 20140124 |