CN110244347B - Mechanical underwater seismic source - Google Patents
Mechanical underwater seismic source Download PDFInfo
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- CN110244347B CN110244347B CN201910561543.3A CN201910561543A CN110244347B CN 110244347 B CN110244347 B CN 110244347B CN 201910561543 A CN201910561543 A CN 201910561543A CN 110244347 B CN110244347 B CN 110244347B
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- seismic source
- striking
- guide cavity
- eardrum
- hammer
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V1/00—Seismology; Seismic or acoustic prospecting or detecting
- G01V1/02—Generating seismic energy
- G01V1/143—Generating seismic energy using mechanical driving means, e.g. motor driven shaft
- G01V1/155—Generating seismic energy using mechanical driving means, e.g. motor driven shaft using reciprocating masses
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A90/00—Technologies having an indirect contribution to adaptation to climate change
- Y02A90/30—Assessment of water resources
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- Engineering & Computer Science (AREA)
- Remote Sensing (AREA)
- Physics & Mathematics (AREA)
- Life Sciences & Earth Sciences (AREA)
- Acoustics & Sound (AREA)
- Environmental & Geological Engineering (AREA)
- Geology (AREA)
- General Life Sciences & Earth Sciences (AREA)
- General Physics & Mathematics (AREA)
- Geophysics (AREA)
- Percussion Or Vibration Massage (AREA)
- Geophysics And Detection Of Objects (AREA)
Abstract
The invention discloses a mechanical underwater seismic source, which comprises a shell, wherein one end of the shell is provided with a first opening; the guide cavity is arranged in the shell, a front end opening is arranged at the first end of the guide cavity, a rear end opening is arranged at the second end of the guide cavity, and the edge of the front end opening is hermetically connected with the edge of the inner side of the first opening; the eardrum is arranged at the rear end opening and covers a part or all of the rear end opening; the electromagnetic striking part is arranged in the shell and comprises a striking hammer and an electromagnetic relay, the striking hammer comprises a piston rod and a hammer body, the striking hammer is arranged on one side of the eardrum, which is far away from the guide cavity, and a striking gap is formed between the striking hammer and the eardrum; the electromagnetic relay is used for controlling the striking hammer to reciprocate towards the eardrum so as to realize periodic striking on the eardrum; the piston rod penetrates through the electromagnetic relay, the wall of the guide cavity is a vibration wave reflection wall, and vibration waves generated by periodically striking the tympanic membrane by the striking hammer are transmitted through the guide cavity. The seismic source has the advantages of fast energy dissipation, high conversion rate, small volume, safety, reliability and strong applicability.
Description
Technical Field
The invention belongs to the field of underwater exploration, and particularly relates to a mechanical underwater seismic source.
Background
Nowadays, people pay more and more attention to water environment exploration, the requirements on underwater exploration equipment are more and more obvious, and a seismic mapping method is a very effective underwater exploration method and mainly achieves the purpose of distinguishing stratums by utilizing a seismic source to emit stress waves and then receive reflected emitted waves.
There are two existing underwater exploration seismic sources: one is an air gun type seismic source and the other is an electric spark type seismic source. The air gun type seismic source generates shock waves by utilizing compressed air; the spark-type seismic source uses high-voltage electricity to vaporize surrounding media to form a high-voltage area, so as to generate shock waves.
However, the air gun type seismic source is large in size, inconvenient to transport and high in cost due to the fact that the compressor is arranged inside the air gun type seismic source; although the spark-ignition seismic source is small and exquisite, the time control is inaccurate, the energy under high voltage is still very limited, the risk of electric leakage easily exists, the spark-ignition seismic source is not safe, the large current passing also can generate great interference on the data acquisition result, the generated energy is dispersed, the conversion rate is low, and the interference of underwater sound cannot be effectively prevented. These disadvantages severely affect the efficiency of the underwater exploration operation.
Disclosure of Invention
In order to solve the problems, the invention provides a mechanical underwater seismic source which has the advantages of fast energy dissipation, high conversion rate, small volume, safety, reliability and strong applicability.
The technical scheme of the invention is as follows:
a mechanical underwater seismic source comprising:
the device comprises a shell, a first connecting piece and a second connecting piece, wherein one end of the shell is provided with a first opening;
the guide cavity is arranged in the shell, a front end opening is formed in the first end of the guide cavity, a rear end opening is formed in the second end of the guide cavity, and the edge of the front end opening is hermetically connected with the edge of the inner side of the first opening;
the eardrum is arranged at the rear end opening, and covers a part or all of the rear end opening;
the portion is hit to electromagnetism is located inside the casing, the portion is hit to electromagnetism includes:
the beating hammer comprises a piston rod and a hammer body, is arranged on one side of the drum membrane far away from the guide cavity, and is provided with a beating gap;
the electromagnetic relay is used for controlling the striking hammer to reciprocate towards the eardrum so as to realize periodic striking on the eardrum;
the piston rod penetrates through the electromagnetic relay, the wall of the guide cavity is a vibration wave reflection wall, and the vibration wave generated by periodically striking the tympanic membrane by the striking hammer is transmitted through the guide cavity.
According to an embodiment of the invention, the wall of the guide cavity is a paraboloid of revolution.
According to an embodiment of the invention, the tympanic membrane is located at the focal point of the paraboloid of revolution.
According to an embodiment of the present invention, the housing is filled with a vibration isolating material.
According to an embodiment of the present invention, the vibration isolation material is a foamed resin.
According to an embodiment of the invention, the power supply device is further included.
According to an embodiment of the present invention, the power supply device is a cable, the cable passes through the housing and is connected to the electromagnetic relay, and the other end of the cable is connected to an external power supply.
According to an embodiment of the present invention, the power supply device is a battery, and the battery is disposed inside the housing and connected to the electromagnetic relay.
According to an embodiment of the invention, the housing is cylindrical.
According to an embodiment of the present invention, the tympanic membrane is a steel plate.
Due to the adoption of the technical scheme, compared with the prior art, the invention has the following advantages and positive effects:
(1) the invention is composed of a shell, a guide cavity, a tympanic membrane and an electromagnetic striking part, has smaller integral structure volume, can be drawn and hung along the ship bottom, is convenient to transport, can be used in various complex environments, and has strong applicability.
(2) The electromagnetic striking part consists of an electromagnetic relay and a striking hammer, the striking force can be controlled by controlling the current input into the electromagnetic relay, the path length of the striking hammer can be adjusted by the on-off alternative time of the electromagnetic relay, and the striking force can also be controlled by adjusting the path length of the striking hammer, so that the adjustable range of the seismic source intensity is large.
(3) The wall of the guide cavity is a paraboloid of revolution, and the tympanic membrane is positioned at the focus of the paraboloid of revolution, so that the vibration wave generated by knocking the tympanic membrane is reflected by the wall of the guide cavity and then is vertically emitted to the stratum in parallel, and the guide cavity has the functions of directional transmission, strong penetrating power and high energy conversion rate.
(4) The inside packing of casing has the vibration isolation material, and the casing only has one side opening and for cylindrical for the vibration wave cuts off inside, and energy consumption is little, and has effectively prevented the interference of underwater sound, fills vibration isolation material and can lighten weight, reduce cost, economical and practical.
(5) The power supply device has two options of cable connection external power supply and internal battery, so that the practical application is more flexible, the power supply by the cable connection external power supply is safer and more reliable, and the power supply by the battery is more portable and more convenient.
(6) The tympanic membrane is a steel plate, so that the generated vibration waves are stronger, and the tympanic membrane is more durable.
Drawings
The following detailed description of embodiments of the invention is provided in conjunction with the appended drawings, in which:
FIG. 1 is a perspective view of a mechanical underwater seismic source of the present invention;
fig. 2 is an overall sectional view of a mechanical underwater seismic source of the present invention.
Description of reference numerals:
1: a housing; 2: a guide cavity wall; 3: a tympanic membrane; 4: an electromagnetic relay; 5: a piston rod; 6: a hammer body; 7: a guide cavity.
Detailed Description
The present invention provides a mechanical underwater seismic source, which is further described in detail below with reference to the accompanying drawings and specific embodiments. Advantages and features of the present invention will become apparent from the following description and from the claims. It is to be noted that the drawings are in a very simplified form and are all used in a non-precise ratio for the purpose of facilitating and distinctly aiding in the description of the embodiments of the invention.
Example 1
Referring to fig. 1, the embodiment provides a mechanical underwater seismic source, which includes a housing 1, where the housing 1 is a whole device framework and has supporting, protecting and waterproof functions, the housing 1 may be hollow and filled with a vibration isolation material, or may be directly formed integrally by the vibration isolation material, one end of the housing 1 is provided with a first opening, and the vibration isolation material and the housing 1 only have one opening so as to partition vibration waves inside, so that energy consumption is low, interference of underwater sound is effectively prevented, and interference resistance is greatly enhanced; guide chamber 7 is located inside casing 1, played the effect of conduction vibration wave, guide chamber 7 is a cavity in casing 1, and guide chamber wall 2 is a part of casing, just guide chamber 7 first end is equipped with the front end opening, guide chamber 7 second end is equipped with the rear end opening, front end open-ended border with the inboard border sealing connection of first opening, the first opening of casing 1 and guide chamber 7's front end opening are in same position, and the opening border can coincide also parallel arrangement. The eardrum 3 is used for generating vibration waves and is arranged at the rear end opening, part or all of the rear end opening is covered by the eardrum 3, and the eardrum 3 and the rear end opening form a closed structure when being installed, so that a waterproof effect is achieved; the electromagnetic striking part is arranged in the shell 1 and comprises a striking hammer and an electromagnetic relay 4, the striking hammer comprises a piston rod 5 and a hammer body 6, the piston rod 5 and the hammer body 6 can be integrally formed and can also be detachably connected, the striking hammer is arranged on one side of the eardrum 3, which is far away from the guide cavity 7, and a striking gap is formed between the striking hammer and the eardrum 3; the electromagnetic relay 4 is used for controlling the striking hammer to reciprocate towards the tympanic membrane 3 so as to realize periodic striking on the tympanic membrane 3 and form a seismic source; the piston rod 5 penetrates through the electromagnetic relay 4, the electromagnet in the electromagnetic relay 4 controls the piston rod 5 to reciprocate up and down, the guide cavity wall 2 is a vibration wave reflection wall, and the vibration waves generated by periodically striking the tympanic membrane 3 by the striking hammer are transmitted through the guide cavity 7. The integral structure consists of a shell 1, a guide cavity 7, a tympanic membrane 3 and an electromagnetic striking part, has small volume, can be drawn and hung along the ship bottom, is convenient to transport, can be used in various complex environments, and has strong applicability; the electromagnetic relay 4 is adopted to control the striking hammer to move up and down, so that the striking force can be controlled by controlling the input current of the electromagnet, the path length of the striking hammer can be adjusted by controlling the on-off alternative time, and the effect of adjusting the intensity of the seismic source is achieved, and the adjustable range of the intensity of the seismic source is large.
When the device is used specifically, the size of a seismic source is set by adjusting the current input size and the on-off traffic time according to the detection depth, the seismic source is placed at the bottom of a ship or other suitable positions after the setting is finished, then the seismic source is started, the electromagnetic relay 4 works to drive the striking hammer to do reciprocating striking motion towards the tympanic membrane 3 to generate vibration waves, the vibration waves are reflected and dispersed out through the guide cavity 7, and the vibration waves are transmitted at the bottom of the water and meet a seabed reflecting layer to form new reflected waves which are received by receiving equipment.
Further, the wall 2 of the guide cavity is a paraboloid of revolution.
Further, the tympanic membrane 3 is located at the focal point of the paraboloid of revolution. The inner contour of the cavity wall 2 of the guide cavity is a paraboloid of revolution, the tympanic membrane 3 is positioned at the focal position of the paraboloid of revolution, the paraboloid parallel reflection principle is utilized, so that the vibration waves formed by knocking the tympanic membrane 3 are directionally and parallelly ejected out, the penetrating power is strong, the orientation function is realized, the unnecessary loss of energy is reduced, and the guide cavity is economical and practical.
Further, the housing 1 is filled with a vibration isolation material. The filled vibration isolation material can reduce weight and cost, and is economical and practical.
Further, the vibration isolation material is foamed resin. The foaming resin is convenient to use, good in ductility, economical and practical.
Further, the device also comprises a power supply device.
Further, the power supply device is a cable, the cable penetrates through the shell 1 and is connected to the electromagnetic relay 4, and the other end of the cable is connected to an external power supply. The cable is connected with an external power supply for power supply, so that the safety and the reliability are higher.
Further, the power supply device is a battery, and the battery is arranged inside the shell 1 and connected to the electromagnetic relay 4. The battery is adopted for power supply, so that the portable and convenient electric water heater is more portable and convenient.
Further, the housing 1 is cylindrical. The cylindrical shape is more suitable for the arrangement of the whole structure, and the processing and the manufacturing are more convenient.
Further, the tympanic membrane 3 is a steel plate. The steel plate makes the generation of the vibration wave stronger and the tympanic membrane 3 more durable.
The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments. Even if various changes are made to the present invention, it is still within the scope of the present invention if they fall within the scope of the claims of the present invention and their equivalents.
Claims (10)
1. A mechanical underwater seismic source, comprising:
the device comprises a shell, a first connecting piece and a second connecting piece, wherein one end of the shell is provided with a first opening;
the guide cavity is arranged in the shell, a front end opening is formed in the first end of the guide cavity, a rear end opening is formed in the second end of the guide cavity, and the edge of the front end opening is hermetically connected with the edge of the inner side of the first opening;
the eardrum is arranged at the rear end opening, and covers a part or all of the rear end opening;
the portion is hit to electromagnetism is located inside the casing, the portion is hit to electromagnetism includes:
the beating hammer comprises a piston rod and a hammer body, is arranged on one side of the drum membrane far away from the guide cavity, and is provided with a beating gap;
the electromagnetic relay is used for controlling the striking hammer to reciprocate towards the eardrum so as to realize periodic striking on the eardrum;
the piston rod penetrates through the electromagnetic relay, the wall of the guide cavity is a vibration wave reflection wall, and the vibration wave generated by periodically striking the tympanic membrane by the striking hammer is transmitted through the guide cavity.
2. A mechanical underwater seismic source as in claim 1 wherein the walls of the guided cavity are paraboloids of revolution.
3. A mechanical underwater seismic source as in claim 2 wherein said tympanic membrane is located at a focal point of said paraboloid of revolution.
4. A mechanical underwater seismic source as in claim 1 wherein the housing is filled with vibration isolation material.
5. A mechanical underwater seismic source as in claim 4 wherein the vibration isolation material is a foamed resin.
6. A mechanical underwater seismic source as in claim 1 further comprising power means.
7. A mechanical underwater seismic source as in claim 6 wherein the power supply means is a cable which passes through the housing and is connected to the electromagnetic relay, the other end of the cable being connected to an external power source.
8. The underwater mechanical seismic source of claim 6, wherein said power supply device is a battery, said battery being disposed inside said housing and connected to said electromagnetic relay.
9. A mechanical underwater seismic source as in any of claims 1-8 wherein the housing is cylindrical.
10. A mechanical underwater seismic source as in any of claims 1-8 wherein the tympanic membrane is a steel plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910561543.3A CN110244347B (en) | 2019-06-26 | 2019-06-26 | Mechanical underwater seismic source |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910561543.3A CN110244347B (en) | 2019-06-26 | 2019-06-26 | Mechanical underwater seismic source |
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| Publication Number | Publication Date |
|---|---|
| CN110244347A CN110244347A (en) | 2019-09-17 |
| CN110244347B true CN110244347B (en) | 2020-12-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910561543.3A Active CN110244347B (en) | 2019-06-26 | 2019-06-26 | Mechanical underwater seismic source |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN117723637B (en) * | 2024-02-09 | 2024-04-19 | 同济大学 | Tunnel contact type detection system and periodic shock wave excitation device thereof |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2314387Y (en) * | 1997-10-17 | 1999-04-14 | 胜利石油管理局地球物理勘探开发公司 | Seismic hammer for directional blasting for geological exploration |
| CN104932006A (en) * | 2015-06-02 | 2015-09-23 | 甘肃智通科技工程检测咨询有限公司 | Mechanical energy automatic lossless excitation apparatus of artificial seismic waves in tunnel geological advanced forecast |
| US10408053B2 (en) * | 2016-05-19 | 2019-09-10 | Baker Hughes, A Ge Company, Llc | Encapsulated phased array segment for downhole applications |
| CN107037477B (en) * | 2016-12-28 | 2019-07-05 | 吉林大学 | A kind of electromagnetic type controlled source |
| CN208953699U (en) * | 2018-11-27 | 2019-06-07 | 北京市水电物探研究所 | A kind of anti-interference high-resolution seismic exploration wave producer in full waters |
| CN109709600A (en) * | 2019-03-06 | 2019-05-03 | 防灾科技学院 | Reaction type earthquake vibration pickup mechanical pendulum and its design method |
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