Automatic retractable system for amphibious air gun source

Abstract

The present invention discloses an automatic retracting and deploying system for an amphibious air gun seismic source, comprising: a floating pontoon and a gun sled having at least one air gun array. A plurality of cables are connected between the floating pontoon and the gun sled, and the length of the cable between the floating pontoon and the gun sled can be adjusted and changed, so that the user can flexibly adjust the depth of the gun sled placed in the water as needed, making the gun sled and the floating pontoon flexible and convenient to use. Moreover, since the air gun arrays of the present invention are all arranged on the gun sled, the personnel using the present invention can directly carry the air gun arrays.

Description

Technical Field

[0001] The present invention relates to the technical field of seismic exploration, and particularly to an automatic retracting and deploying system for an amphibious air gun seismic source. Background Art

[0002] Marine seismic exploration usually involves artificially exciting seismic waves, and the reflected waves from the formation are received by a collection cable equipped with a geophone device towed behind a survey ship. Conventional air gun seismic source equipment usually includes a seismic source system (air gun and array), a seismic data acquisition system, a cable control system, a navigation system, and a survey ship, etc. The floating body and the air gun are important components of the air gun seismic source equipment.

[0003] During exploration, usually a survey ship tows multiple floating bodies, and an air gun array is suspended below each floating body. There are two types of floating boats in the prior art: one is an integrated rigid floating body and a soft floating boat, and each column of air gun arrays is equipped with a longitudinal floating boat, and the floating boats are arranged above the air gun array. Multiple columns of air gun arrays are equipped with multiple longitudinal floating boats. The other type is a split floating boat, and each column of air gun arrays is equipped with multiple split floating boats. The split floating boats are longitudinally arranged above the air gun array, and each air gun array is composed of multiple air guns. All floating bodies are towed behind the survey ship through the towing cable. Whether multiple columns of air gun arrays need to connect the floating bodies horizontally together is determined according to specific situations. When the survey ship sails to the exploration area, an air gun is used as an artificial active source for seismic exploration.

[0004] In the prior art, the floating body and the air gun array are directly connected by a cable, and the length of the cable between the floating body and the air gun array cannot be changed once the connection is completed, which has the defects of inconvenient use and inflexible use.

[0005] In view of this, the inventor of the present invention has deeply conceived in order to solve the above problems, and actively studied, improved and trial-produced to develop and design the present invention. Summary of the Invention

[0006] The purpose of the present invention is to provide an automatic retracting and deploying system for an amphibious air gun seismic source that is convenient to use and flexible in use.

[0007] To achieve the above purpose, the solution of the present invention is as follows:

[0008] An automatic retracting and deploying system for an amphibious air gun seismic source, comprising: a floating boat and a gun sled having at least one air gun array, and a plurality of cables are connected between the floating boat and the gun sled, and the length of the cable between the floating boat and the gun sled can be adjusted and changed.

[0009] The floating boat includes two sealed cavities stacked one above the other. Foam is provided in the lower sealed cavity, and a control device is provided in the upper sealed cavity. The control device includes at least one motor and at least one battery. The battery is electrically connected to the motor, and the length of the cable between the gun sled and the floating boat is adjusted by the rotation of the motor.

[0010] The number of the motors is one. The control device further includes a plurality of turntables. A pivot shaft is connected to both sides of the motor. The turntables are pivotally connected to the pivot shaft at intervals. The number of turntables on the two pivot shafts is the same. The cable is wound around the turntables. The cable penetrates through the sealed cavity from the bottom upwards. The cable is equally divided on both sides of the sealed cavity. The winding directions of the cables on the same side of the sealed cavity on the corresponding turntables are the same, and the winding directions of the cables on different sides of the sealed cavity on the corresponding turntables are different.

[0011] The control device further includes a plurality of support seats with fixed pulleys. The cable bypasses the fixed pulley to the turntable.

[0012] A plurality of cable conduits are provided in the sealed cavity. The cable conduits penetrate through the two sealed cavities. Each cable conduit accommodates a cable. The cable conduit penetrates to the lower part of the corresponding fixed pulley.

[0013] A connecting flange is fixedly provided at the connection between the cable conduit and the bottom of the upper sealed cavity.

[0014] The gun sled further includes a sled-shaped frame body, and the air gun array is suspended in the sled-shaped frame body.

[0015] A plurality of alignment and straightening bodies are fixedly provided at intervals on the bottom surface of the floating boat. As the distance from the floating boat increases, the width of the alignment and straightening body becomes smaller. The sled-shaped frame body is provided with a plurality of floating boat guiding grooves, and the alignment and straightening bodies are selectively aligned and snapped into the floating boat guiding grooves.

[0016] The alignment and straightening body has a plurality of frustum cones connected in sequence into a whole. An annular band is integrally formed on one side of each frustum cone facing the bottom surface of the floating boat.

[0017] A front frame is fixedly provided at the front end of the sled-shaped frame body. A protective mesh cover is provided between the bottom and the front of the front frame.

[0018] After adopting the above technical solution, in the automatic retracting and deploying system of the amphibious air gun seismic source of the present invention, the length of the cable between the floating boat and the gun sled can be adjusted and changed, so that the user can flexibly adjust the depth of the gun sled put into the water according to needs, making the gun sled and the floating boat flexible and convenient to use. And since the air gun array of the present invention is provided on the gun sled, the personnel using the present invention can directly carry the air gun array. Description of the Drawings

[0019] Figure 1 Usage state diagram of the present invention;

[0020] Figure 2 Stereogram of the present invention;

[0021] Figure 3 Stereogram (1) of the floating boat of the present invention;

[0022] Figure 4 Stereogram (2) of the floating boat of the present invention;

[0023] Figure 5 Exploded view (1) of the floating boat of the present invention;

[0024] Figure 6 Exploded view (2) of the floating boat of the present invention;

[0025] Figure 7 Stereogram of the gun sled of the present invention;

[0026] Figure 8 Partial stereogram of the floating boat of the present invention.

[0027]

Symbol description

[0028] Carrier equipment 1

[0029] Floating boat 2

[0030] Sealing cavity 21 Control device 22

[0031] Wire running pipe 211 Connecting flange 212

[0032] Motor 221 Pivoting shaft 222

[0033] Turntable 223

[0034] Fixed pulley 224 Support seat 225

[0035] Battery 226

[0036] Heat dissipation chamber 228 Fan 229

[0037] Exhaust duct 220

[0038] Alignment and straightening body 23

[0039] Frustum 231 Annular belt 232

[0040] Gun sled 3

[0041] Air gun 31 Sled-shaped frame 32

[0042] Top bending rod 321 Bottom bending rod 322 Side rod 323

[0043] Top cross bar 3211 Top vertical bar 3212

[0044] Bottom cross bar 3221

[0045] Diagonal support rod 324, wire rope lifting lug 325, connecting rod 326

[0046] Chain 33, front frame 34

[0047] Protection net cover 35

[0048] Connecting plate 36

[0049] Floating boat guide groove 361

[0050] Cable 4

[0051] Towing rope 5. Specific implementation manner

[0052] To achieve the above-mentioned purpose and effect, the technical means and structure adopted by the present invention are hereby illustrated in detail with reference to the preferred embodiments of the present invention for their features and functions, so as to facilitate a complete understanding.

[0053] Please refer to Figures 1 to 8 As shown, the present invention discloses an automatic retracting and deploying system for an amphibious air gun seismic source, including: a floating boat 2 and a gun sled 3 having at least an air gun 31 array. A plurality of cables 4 are connected between the floating boat 2 and the gun sled 3, and the length of the cable 4 between the floating boat 2 and the gun sled 3 can be adjusted and changed.

[0054] Therefore, in the automatic retracting and deploying system for the amphibious air gun seismic source of the present invention, by adjusting and changing the length of the cable 4 between the floating boat 2 and the gun sled 4, the user can flexibly adjust the depth of the gun sled 4 placed in the water according to needs, making the gun sled 3 and the floating boat 2 flexible and convenient to use. And since the air gun 31 array of the present invention is all arranged on the gun sled 3, the personnel using the present invention can directly carry the air gun 31 array.

[0055] Furthermore, the floating boat 2 may include: two sealed cavities 21 stacked up and down. Foam is arranged in the sealed cavity 21 located below, and a control device 22 is arranged in the sealed cavity 21 located above. Through the structural design of the sealed cavities 21 stacked up and down of the floating boat 2 of the present invention, a sealed cavity 21 for arranging the control device 22 is formed above the floating boat 2, realizing the addition of the control device 22 on the floating boat 2, thereby facilitating the user to control the use of the floating boat 2.

[0056] Among them, the sealed cavity 21 located below can be divided into 3 sealed cabins to prevent the present invention from sinking due to the damage and water ingress of one of the sealed cabins.

[0057] Since the existing method of deploying and retrieving an air gun array is to tow the air gun array and move it to the stern of the ship through the overhead track of the retrieval and storage container. When it is put into the water, the cable connected to the floating boat is obliquely pulled. The cable is in a state of being obliquely pulled by the water flow and having an uncertain depth. As the depth of the air gun array in the water increases, the cable becomes taut and plays a role in depth fixation. When retrieving, after towing the air gun array out of the water, it is hung on the overhead track, and then the floating boat is retrieved through the obliquely pulled cable. Therefore, in the present invention, the floating boat 2 is fixedly connected to the sled-shaped frame body 32 for fixing the air gun 31 array, and the whole is put into the water. Then, after towing it to a specified distance from the tail of the carrier equipment 1, the depth-fixing cable 4 is released by wireless control, and the sled-shaped frame body 32 is sunk to the specified depth. When retrieving, first, the depth-fixing cable 4 is winched by wireless control to fixedly connect the sled-shaped frame body 32 and the floating boat 2 into a whole, and then it is towed and retrieved onto the carrier equipment 1. The present invention simplifies the operations of the overhead track and the tail lifting hook of the existing deployment and retrieval system. The present invention can be deployed and retrieved through the roller conveyor belt of the deck and the ramp-type guiding device, with a higher degree of automation, and greatly reduces the risk of personnel working at the tail of the carrier equipment 1.

[0058] Next, the control device 22 may include at least one motor 221 and at least one battery 226. The battery 226 is electrically connected to the motor 221. The length of the cable 4 between the gun sled 1 and the floating boat 2 is adjusted by the rotation of the motor 221. Wherein, the control device 22 may further include a plurality of turntables 223 and a plurality of support seats 225 having fixed pulleys 224. In the embodiment, the number of the motors 221 is one. A pivot shaft 222 is connected to both sides of the motor 221. The number of the turntables 223, the number of the support seats 225 and the number of the cables 4 are the same. The cables 4 correspond to the turntables 223 and the support seats 225 one by one. The turntables 223 are pivotally connected to the pivot shaft 222 at intervals. The number of the turntables 223 on the two pivot shafts 222 is the same. The cable 4 bypasses the fixed pulley 224 to the turntable 223. A plurality of cables 4 penetrate through the sealing cavity 21 from bottom to top. The cables 4 are equally divided and arranged on both sides of the sealing cavity 21, that is, the number of the cables 4 on both sides of the sealing cavity 21 is the same, and the winding directions of the cables 4 on the same side of the sealing cavity 21 on the corresponding turntables 223 are the same, and the winding directions of the cables 4 on different sides of the sealing cavity 21 on the corresponding turntables 223 are different. In this embodiment, the number of the cables 4 is four. The motor 221 may be a reduction motor 221. Every two turntables 223 are pivotally connected to the same pivot shaft 222 at intervals. The winding directions of the cables 4 on the turntables 223 on the same pivot shaft 222 are different. The cables 4 on the turntables 223 on the same pivot shaft 222 are located on both sides of the sealing cavity 21. Thus, by the arrangement of the motor 221, the turntables 223, the support seats 225 having fixed pulleys 224 and the winding directions of the cables 4 in the present invention, the rotation of the motor 221 can be controlled to make the cable 4 wind more and more on the turntable 223 or the cable 4 wind less and less on the turntable 223, so as to pull the gun sled 3 connected by the cable 4 upward or sink it downward, and the distance between the gun sled 3 and the floating boat 2 can be adjusted. The user can flexibly adjust the depth of the gun sled 3 placed in the water as needed, making the use of the gun sled 3 and the floating boat 2 flexible and convenient. However, other methods may also be adopted for adjusting the distance between the gun sled 3 and the floating boat 2, and it is not limited thereto. Wherein, the control device 22 may also include a wireless control module. The wireless control module is connected to the motor 221 and the console in the following carrier equipment 1, so that the driver of the following carrier equipment 1 can adjust the distance between the gun sled 3 and the floating boat 2 by operating the console, but it is not limited thereto.

[0059] To facilitate the discharge of heat from the upper sealing cavity 21 and prevent water from entering the sealing cavity 21, one side of the upper sealing cavity 21 may have a heat dissipation chamber 228. The upper part of the heat dissipation chamber 228 is open. At least one blower 229 electrically connected to the battery 226 is provided in the sealing cavity 21. Each blower 229 is connected to an exhaust duct 220. The exhaust duct 220 is arranged in the heat dissipation chamber 228. The upper end of the exhaust duct 220 bends downward to prevent water from entering the upper sealing cavity 21 from the heat dissipation chamber 228.

[0060] Furthermore, a plurality of wire rope pipes 211 may be penetrated in the sealing cavity 21. In this embodiment, the number of the wire rope pipes 211 is four. The wire rope pipes 211 penetrate through the two sealing cavities 21. A cable 4 is respectively accommodated in each wire rope pipe 211. The wire rope pipes 211 penetrate to the lower part of the corresponding fixed pulley 224, so as to prevent a large amount of water from being brought into the upper sealing cavity 21 by the cable 4.

[0061] In addition, a connecting flange 212 may be fixedly provided at the connection between the wire rope pipe 211 and the bottom of the upper sealing cavity 21. By using the connecting flange 212, the sealing performance of the upper sealing cavity 21 is further improved. Half of the wire rope pipes 211 are above the water line to prevent water from entering the sealing cavity 21. Multiple layers of wool felt are installed in the upper half of the wire rope pipe 211 to prevent water splashes from entering the sealing cavity 21.

[0062] Further, the gun sled 3 may include: a sled-shaped frame body 32 and at least one air gun 31 array. Each air gun 31 array is composed of a plurality of air guns 31 arranged at intervals. The sled-shaped frame body 32 is a hollow frame. The air guns 31 are suspended in the sled-shaped frame body 32. By using the gun sled 3, the air guns 31 are all suspended in the sled-shaped frame body 32, so as to facilitate pulling all the air guns 31 together and transporting them into the following carrier equipment 1. And the air guns 31 are arranged at intervals, so that the air guns 31 will not be wound and collided with each other. During the navigation process, it is not certain that the gun sled 3 can be accurately docked to the tail deck space 12. The structure of the sled-shaped frame body 32 with a narrow front and a wide rear can make the gun sled 3 cooperate with the drag reduction guiding device 11 to guide it into the tail deck space 12. And the gun sled 3 has the characteristics of protecting the internal air guns 31 from being impacted by foreign objects in the water, preventing the air guns 31 from colliding with the river bed when the gun sled 3 falls on the river bed, and having a small navigation resistance.

[0063] Next, the sled-shaped frame 32 may include two top bent rods 321 arranged at intervals, two bottom bent rods 322 arranged at intervals, and six side rods 323. The side rods 323 are respectively fixedly connected to the ends of adjacent top bent rods 321 and bottom bent rods 322, the middle of adjacent top bent rods 321 and the middle of bottom bent rods 322. A plurality of top cross rods 3211 are fixedly connected at intervals between the top bent rods 321, and a plurality of top vertical rods 3212 are fixedly arranged at intervals between the top cross rods 3211. A plurality of bottom cross rods 3221 are fixedly connected at intervals between the bottom bent rods 322. The middle top cross rod 3211, bottom cross rod 3221, and side rod 323 all separate two adjacent air gun 31 arrays, so that the overall weight of the sled-shaped frame 32 is light and it is convenient to drag.

[0064] Furthermore, both ends of the air gun 31 can be suspended between two adjacent top cross rods 3211 through an inclined chain 33 respectively, so that the air guns 31 can be suspended at intervals in the sled-shaped frame 32 without interfering with each other, and it is convenient to adjust the distance between the air gun 31 and the bottom bent rod 322 by adjusting the length of the chain 33, and the disassembly and assembly of the chain 33 are convenient.

[0065] To prevent the air gun 31 from colliding with the riverbed when the gun sled 3 falls on the riverbed, there may be a spacing between the bottom of the air gun 31 and the bottom bent rod 322 in the vertical direction.

[0066] To improve the strength of the sled-shaped frame 32 of the present invention, an inclined support rod 324 can be fixedly connected between the middle side rod 323 and the adjacent top bent rod 321, between the middle side rod 323 and the adjacent bottom bent rod 322, between the middle side rod 323 and the adjacent bottom cross rod 3221, and between the middle side rod 323 and the adjacent top cross rod 3211. An inclined support rod 324 can be fixedly connected between the rear side rod 323 and the adjacent top bent rod 321, between the rear side rod 323 and the adjacent bottom bent rod 322, between the rear side rod 323 and the adjacent bottom cross rod 3221, and between the rear side rod 323 and the adjacent top cross rod 3211. An inclined support rod 324 can be fixedly connected between the front side rod 323 and the adjacent bottom bent rod 322. The inclined support rod 324 can play a role in reinforcement.

[0067] Secondly, to facilitate the installation and fixation of the cable 4, a steel wire rope hanger 325 can be fixedly provided respectively below the rear ends of two top vertical rods 3212 adjacent to the top bent rod 321, and a connecting rod 326 with a steel wire rope hanger 325 fixedly provided below can be fixedly provided respectively between the front ends of two groups of adjacent two top vertical rods 3212 adjacent to the top bent rod 321. The steel wire rope hanger 325 can be used to connect and fix the cable 4.

[0068] In addition, a front frame 34 may be fixedly provided at the front end of the sled-shaped frame 32 , and a protective mesh cover 35 may be provided between the bottom and the front of the front frame 34 , so as to prevent the sled-shaped frame 32 from being hit and damaging the air gun 31 .

[0069] Furthermore, in order to enable the buoy 2 to be quickly, conveniently and evenly stacked directly above the gun sled 3, a plurality of alignment return bodies 23 can be fixedly arranged at intervals on the bottom surface of the sealed cavity 21 below. In the embodiment, the number of the alignment return bodies 23 and the following buoy guide grooves 361 are both four, and the alignment return bodies 23 are respectively arranged adjacent to the corresponding cables 4, but this is not limited to the above. As the distance from the sealed cavity 21 increases, the width of the alignment return body 23 decreases, that is, the width of the alignment return body 23 away from the sealed cavity 21 is smaller than the width of the alignment return body 23 close to the sealed cavity 21. Two adjacent top vertical rods 3212 adjacent to the top bending rod 321 are respectively fixedly arranged with two buoys. The connecting plate 36 of the guide groove 361, the alignment and return body 23 is selectively aligned and inserted into the floating boat guide groove 361, and the connecting plates 36 are arranged at intervals, so as to utilize the matching alignment of the alignment and return body 23 and the floating boat guide groove 361. When the alignment and return body 23 touches the floating boat guide groove 361 away from the sealing chamber 21, since the alignment and return body 23 decreases with the increase of the distance from the sealing chamber 21, the alignment and return body 23 will go down accordingly until the alignment and return body 23 is close to the sealing chamber 21 and is stuck to the groove wall of the floating boat guide groove 361. At this time, the floating boat 2 is flatly stacked directly above the gun sled 3, and the floating boat 2 is not easy to be deflected, which is convenient for the floating boat 2 and the gun sled 3 to be towed onto the following carrying equipment 1 together.

[0070] Furthermore, the alignment and return body 23 can have a plurality of truncated cones 231 connected in sequence as one body, and each truncated cone 231 has an annular belt 232 integrally formed on one side of the bottom surface of the sealing cavity 21. In this embodiment, the number of the truncated cones 231 is three, but it is not limited to this, and other numbers can also be used, so that the annular belt 232 can serve as a transition to prevent the motor 221 from tilting the alignment and return body 23 against the groove wall of the floating boat guide groove 361 when the motor 221 is a DC motor 221, and misjudging it as an overload, thereby starting the overload protection.

[0071] See also Figure 1 As shown, when the present invention is in use, a tow rope 5 can be used to drag the present invention behind a carrier 1. During transportation, the carrier 1 can be transported by a vehicle, and the buoy 2 and the gun sled 3 are stacked in the carrier. During exploration, the carrier 1 can be towed by a ship to put the buoy 2 and the gun sled 3 into the water.

[0072] The technical content and features of the present invention have been disclosed above. The composition of the present invention is not limited to the above. Those skilled in the art may still make various substitutions and modifications that do not deviate from the creative spirit of the present invention based on the disclosure of the present invention. Therefore, the protection scope of the present invention should not be limited to what is disclosed in the embodiments, but should include various substitutions and modifications that do not deviate from the present invention and are covered by the claims.

Claims

1. An automatic retracting and deploying system for an amphibious air gun seismic source, characterized in that, Comprising: A floating pontoon and a gun sled having at least one air gun array, with a plurality of cables connected between the floating pontoon and the gun sled, and the length of the cables between the floating pontoon and the gun sled being adjustable and variable; The gun sled further includes a sled-shaped frame body, and the air gun array is suspended in the sled-shaped frame body. Each air gun array is composed of a plurality of air guns arranged at intervals; a front frame is fixedly provided at the front end of the sled-shaped frame body, and a protective mesh cover is provided between the bottom and the front of the front frame; A plurality of alignment and rectification bodies are fixedly provided at intervals on the bottom surface of the floating pontoon. As the distance from the floating pontoon increases, the width of the alignment and rectification bodies becomes smaller. The sled-shaped frame body is provided with a plurality of floating pontoon guiding grooves, and the alignment and rectification bodies are selectively aligned and snapped into the floating pontoon guiding grooves, and the floating pontoons are stacked flatly directly above the gun sled; During use, a towing rope is used to tow the floating pontoon and the gun sled behind a transport equipment. During transportation, a vehicle is selected as the transport equipment for transportation, and the floating pontoon and the gun sled are stacked in the transport equipment. During exploration, a ship is selected as the transport equipment for towing, and the floating pontoon and the gun sled are placed in the water.

2. The automatic retractable system of the amphibious air gun seismic source according to claim 1, characterized in that: The floating pontoon includes two sealing cavities stacked up and down. Foam is provided in the lower sealing cavity, and a control device is provided in the upper sealing cavity. The control device includes at least one motor and at least one battery. The battery is electrically connected to the motor, and the length of the cable between the gun sled and the floating pontoon is adjusted by the rotation of the motor.

3. The automatic retracting and deploying system of the amphibious air gun seismic source according to claim 2, characterized in that: The number of the motors is one. The control device further includes a plurality of turntables. A pivot shaft is connected to both sides of the motor, and the turntables are pivotally connected to the pivot shaft at intervals. The number of turntables on the two pivot shafts is the same. The cable is wound around the turntables, and the cable penetrates through the sealing cavity from the bottom upwards. The cable is evenly divided on both sides of the sealing cavity. The winding directions of the cables on the same side of the sealing cavity on the corresponding turntables are the same, and the winding directions of the cables on different sides of the sealing cavity on the corresponding turntables are different.

4. The automatic retracting and deploying system of the amphibious air gun seismic source according to claim 3, characterized in that: The control device further includes a plurality of support seats having fixed pulleys, and the cable bypasses the fixed pulleys to the turntables.

5. The automatic retracting and deploying system of the amphibious air gun seismic source according to claim 4, characterized in that: A plurality of wire running pipes are provided in the sealing cavity, and the wire running pipes penetrate through the two sealing cavities. A cable is respectively accommodated in each wire running pipe, and the wire running pipes penetrate to the lower part of the corresponding fixed pulley.

6. The automatic retracting and deploying system of the amphibious air gun seismic source according to claim 5, characterized in that: A connecting flange is fixedly provided at the connection between the wire running pipe and the bottom of the upper sealing cavity.

7. The automatic retracting and deploying system of the amphibious air gun seismic source according to claim 1, wherein: The alignment and rectification body has a plurality of frustum cones connected in sequence into a whole, and an annular band is integrally formed on one side of each frustum cone facing the bottom surface of the floating pontoon.

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