A shallow draft geophysical exploration vessel

Abstract

The present invention provides a shallow draft geophysical exploration vessel, the hull of which has a bulbous bow, the width of which is greater than the height, the bulbous bow having a side surface and a bottom surface, and in a cross section passing through the bulbous bow, the side surface and the cross section intersect at a first curve, the bottom surface and the cross section intersect at a second curve, and the curvature of the first curve is greater than the curvature of the second curve. The bottom surface is smoothly connected to the bottom of the hull and intersects with the mid-longitudinal section at a third curve, the curvature of the third curve gradually decreases from the bow direction to the stern direction, and the width of the bottom surface gradually increases. The hull is provided with a DP propulsion system, an airgun seismic source system and a node retracting and releasing system. The present invention discloses a shallow draft geophysical exploration vessel, the hull of which is provided with a wide and flat bulbous bow, so that the hull has the ability to sail in shallow waters, which not only improves the wave-making resistance generated when the ship is sailing, but also increases the proportion of the displacement volume distributed in the bow, improves the stability and wave resistance of the ship, and is conducive to resisting the heave phenomenon under the action of wind and waves.

Description

Technical Field

[0001] The invention relates to the field of ocean exploration, and in particular to a shallow-draft geophysical exploration vessel. Background Art

[0002] The ocean is rich in natural resources, and people are constantly exploring and utilizing them. During the exploration process, exploration ships are generally used. Exploration ships are loaded with various exploration equipment.

[0003] Existing exploration vessels are all deep-sea operation vessels with heavy loads and deep drafts, which makes it impossible for them to explore marine resources in shallower waters. Summary of the invention

[0004] The present invention provides a shallow draft geophysical exploration vessel to solve the above problems.

[0005] A shallow draft geophysical exploration vessel comprises a hull having a bulbous bow, wherein the width of the bulbous bow is greater than the height, the bulbous bow having a side surface and a bottom surface, and in any cross section passing through the bulbous bow, the side surface intersects with the cross section at a first curve, and the bottom surface intersects with the cross section at a second curve, and the curvature of the first curve is greater than the curvature of the second curve.

[0006] Furthermore, the bottom surface is smoothly connected to the bottom of the hull, the bottom surface intersects with the mid-longitudinal section at a third curve, and the curvature of the third curve gradually decreases from the bow direction to the stern direction;

[0007] The width of the bottom surface gradually increases from the bow to the stern.

[0008] Furthermore, the width of the cross-section of the bulbous bow at the perpendicular line of the hull bow is 45%-55% of the hull width, the maximum height of the bulbous bow is 120%±5% of the designed draft height of the hull, and the length of the bulbous bow is 2%±0.5% of the length between the perpendicular lines of the hull.

[0009] Furthermore, the bottom of the hull is a plane, and the port side and the starboard side of the hull are both perpendicular to the bottom of the hull.

[0010] Furthermore, the Fourier number of the hull is 0.170-0.180, the block coefficient is 0.9-0.99, and the designed draft is 2.4m-3m.

[0011] Furthermore, the hull is provided with a DP propulsion system, an airgun seismic source system and a node retraction and deployment system.

[0012] Furthermore, the DP propulsion system includes a main propulsion device and a thrust device, the main propulsion device includes two main propellers symmetrically arranged at the stern of the hull, and the distance between the center of the propeller disk of the main propeller and the waterline is 1700mm±400mm; the thrust device includes three bow thruster propellers, and the bow thruster propellers are arranged side by side and equally spaced at the bow of the special vessel for shallow water geophysical exploration operations, and the blade disk radius of the bow thruster propeller is 600mm±150mm.

[0013] Furthermore, the airgun seismic source system includes a storage structure, a slide rail, a lifting chain, a first retractable winch, a second retractable winch and a gun cable winch;

[0014] The storage structure is arranged at the stern of the hull and has an opening facing the stern of the hull. The slide rail is arranged at the top of the storage structure along the length direction of the storage structure and extends out from the opening.

[0015] The slide rail is provided with a slidable suspension chain, and the end of the suspension chain is provided with a connection structure for connecting to a seismic source;

[0016] The first retractable winch is arranged at the opening, the gun cable winch is arranged on the side of the storage structure close to the bow, the gun cable is wound around the gun cable winch, and the gun cable is connected to the seismic source. The second retractable winch is arranged on the top inner wall of the storage structure and close to the bow.

[0017] Furthermore, the node retractable system is arranged on the side of the airgun seismic source system close to the bow direction, and includes a node charging download module, a node transmission auxiliary module, a node connector storage module, a node retractable power module and an automatic unhooking module;

[0018] The automatic hook-and-unhook module, the node retracting power module, and the node connector storage module are arranged in sequence from the stern to the bow on the port side of the main deck of the shallow water geophysical exploration special ship; the node transmission auxiliary module is arranged on the right side of the node retracting power module; the node charging download module is arranged on the side of the node transmission auxiliary module close to the bow direction;

[0019] The node charging and downloading module is used for node storage, charging and data downloading. The node charging and downloading module includes multiple rows of storage racks. The node transmission auxiliary module includes an auxiliary conveyor belt arranged along the bow and stern line direction and a slide rail arranged perpendicular to the bow and stern line direction. The auxiliary conveyor belt can slide along the slide rail so that the auxiliary conveyor belt corresponds to different storage racks. The auxiliary conveyor belt is connected to the main conveyor belt to transmit the node to the automatic unhooking module.

[0020] The node connector storage module includes a winch, a cable is wound around the winch, a connector is provided on the cable, the cable is connected to the node retractable power module, and the node retractable power module includes a motor and a cable roller for conveying the connector to the automatic hooking and unhooking module.

[0021] The automatic hooking and unhooking module is used to connect or disconnect the node with the connector. A guide wheel is provided at the stern of the ship, and a slideway is provided between the guide wheel and the automatic hooking and unhooking module.

[0022] The present invention discloses a shallow-draft geophysical exploration vessel, wherein the hull is provided with a wide and flat bulbous bow, so that the hull has the ability to sail in shallow waters, which not only improves the wave-making resistance generated when the ship is sailing, but also increases the proportion of the displacement volume distributed in the bow, thereby improving the stability and wave resistance of the ship, and is conducive to resisting the heave phenomenon under the action of wind and waves. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0024] Figure 1 This is a main view of a shallow draft geophysical exploration vessel disclosed in an embodiment of the present invention;

[0025] Figure 2 A top view of a shallow draft geophysical exploration vessel disclosed in an embodiment of the present invention;

[0026] Figure 3 A side view of a shallow draft geophysical exploration vessel disclosed in an embodiment of the present invention;

[0027] Figure 4 This is a schematic diagram of a bow disclosed in an embodiment of the present invention;

[0028] Figure 5 A longitudinal section view of the bow portion of a shallow draft geophysical exploration vessel disclosed in an embodiment of the present invention;

[0029] Figure 6 for Figure 5 Middle AA section;

[0030] Figure 7 for Figure 5 Middle BB section;

[0031] Figure 8 for Figure 5 Middle CC section;

[0032] Fig. 9 for Figure 5 Middle DD section;

[0033] Fig.10 for Figure 5 Middle EE section;

[0034] Fig.11 for Figure 5 Middle FF section;

[0035] Fig.12 for Figure 5 Middle GG section;

[0036] Fig.13 A comparison diagram of the vertical velocity change of a shallow draft geophysical exploration vessel disclosed in an embodiment of the present invention and the vertical velocity change of a vessel without a bulbous bow disclosed in this embodiment;

[0037] Fig.14 It is a schematic diagram of the structure of an air gun seismic source system in an embodiment of the present invention;

[0038] Fig.15 This is a schematic diagram of the use of the air gun seismic source system in the embodiment of the present invention, and the state in the figure is the initial state of the seismic source recovery;

[0039] Fig.16 This is a schematic diagram of the use of the air gun seismic source system in the embodiment of the present invention, and the state in the figure is the intermediate state of recovering the seismic source;

[0040] Fig.17 This is a schematic diagram of the use of the air gun seismic source system in the embodiment of the present invention, and the state in the figure is the state of completing the recovery of the seismic source;

[0041] Fig.18 It is a top view of the structure of the air gun seismic source system in the embodiment of the present invention;

[0042] Fig.19 for Fig.14 Enlarged view of part A;

[0043] Fig. 20 for Fig.14 Enlarged view of part B;

[0044] Fig.21 is a schematic diagram of a slide rail in an embodiment of the present invention;

[0045] Fig. 22 Schematic diagram of a node retracting and deploying system in an embodiment of the present invention. DETAILED DESCRIPTION

[0046] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0047] like Figure 1-5 As shown, a shallow draft geophysical exploration vessel comprises a hull 1, wherein the hull 1 has a bulbous bow 2, wherein the width of the bulbous bow 2 is greater than the height, and the bulbous bow has a side surface and a bottom surface. In any cross section passing through the bulbous bow, the side surface intersects with the cross section at a first curve 121, and the bottom surface intersects with the cross section at a second curve 122. The curvature of the first curve 121 is greater than the curvature of the second curve 122. The cross section is perpendicular to the bow and stern line of the hull, as shown in FIG. Figure 6-12 As shown, in this embodiment, multiple cross sections are selected for display. Figure 5 As shown, the bottom surface is smoothly connected to the bottom of the hull 1, and the bottom surface intersects with the mid-longitudinal section at a third curve 123, and the curvature of the third curve 123 gradually decreases from the bow direction to the stern direction; the width of the bottom surface gradually increases from the bow to the stern direction.

[0048] like Figure 4 As shown, there is an angle between the bulbous bow 2 and the hull 1, such as Figure 6-9 As shown, the angle gradually increases from the bow direction to the stern direction.

[0049] The maximum height of the bulbous bow is greater than the designed draft height of the hull, and the height of the bulbous bow 2 gradually decreases from the bow direction to the stern direction.

[0050] like Fig.11 As shown, it is a cross-sectional view at the perpendicular line of the bow of the hull. The width of the cross-sectional view of the bulbous bow 2 at the perpendicular line of the bow of the hull is 45%-55% of the hull width, the maximum height of the bulbous bow 2 is 120%±5% of the designed draft height of the hull, and the length of the bulbous bow 2 is 2%±0.5% of the length between the perpendicular lines of the hull.

[0051] The bottom of the hull 1 is a plane, and the port side and the starboard side of the hull 1 are perpendicular to the bottom of the hull. The Fourier number of the hull is 0.170-0.180, the block coefficient is 0.9-0.99, and the design draft is 2.4m-3m.

[0052] A hull with a large square coefficient will greatly increase the risk of the hull hitting the bottom in shallow waters when the hull rises and falls too much with the waves, which can easily cause damage. The bulbous bow provided in this embodiment greatly reduces the height of the hull rising and falling with the waves, and the flat wide bulbous bow weakens the waveform below the designed waterline, reducing the wave resistance. Not only does it reduce the degree of hull fluctuation under waves, but it also increases the volume of water that can be displaced by the hull, making the hull draft further shallower.

[0053] The bulbous bow in this embodiment not only improves the wave resistance generated when the ship is sailing, but also increases the proportion of the displacement volume distributed in the bow, thereby improving the stability and seakeeping of the ship, and is conducive to resisting the heave phenomenon under the action of wind and waves. Fig.13 As shown, the bulbous bow performance is verified by CFD calculation. The darker curve in the figure is the shallow draft geophysical exploration vessel in this embodiment, and the shallower curve is the ordinary ship type, which does not have the bulbous bow in this embodiment. It can be clearly seen from the figure that the vertical speed of the shallow draft geophysical exploration vessel in this embodiment is small, that is, the up and down fluctuations are small. Under the action of waves with a wave height of 1.5m and a wavelength of 1 times the length of the ship, the hull performs a vertical swing motion with an amplitude of 0.12m, and the maximum sinking depth is only 0.24m, which provides stable working conditions for precision equipment and instruments, and ensures that the ship does not touch the bottom when operating in the extremely shallow water area of ​​4m under wave conditions.

[0054] The hull 1 is provided with a DP propulsion system 3 , an airgun source system 4 and a node retraction and deployment system 5 .

[0055] The DP propulsion system 3 includes a main propulsion device 31 and a thrust device 32. The main propulsion device 31 includes two main propellers symmetrically arranged at the stern of the hull; the distance between the center of the propeller disk of the main propeller and the waterline is 1700mm±400mm. The thrust device 32 includes three bow thruster propellers. The bow thruster propeller is composed of three groups of bow thrusters with smaller disk diameters, which are arranged side by side and equidistantly at the bow of the special ship for shallow water geophysical exploration operations. The propeller disk radius of the bow thruster propeller is 600mm±150mm.

[0056] like Fig.14 As shown, the air gun seismic source system 4 includes: a storage structure 41, a slide rail 42, a suspension chain 43, a first retractable winch 44 and a gun cable winch 49;

[0057] The storage structure 41 is disposed at the stern of the hull 1 and has an opening facing the stern of the hull 1. The slide rail 42 is disposed at the top of the storage structure 41 along the length direction of the storage structure 41 and extends out from the opening 4101.

[0058] The slide rail 42 is provided with a slidable suspension chain 43, and the end of the suspension chain 43 is provided with a connection structure 48 for connecting to a seismic source 47.

[0059] The first retractable winch 44 is disposed at the opening, the gun cable winch 49 is disposed at the storage structure 1 near the bow, the gun cable winch 48 is wound with a gun cable, and the gun cable is connected to the seismic source 47 .

[0060] In this embodiment, the air gun models that can be used as the source are: Bolt air gun and G gun. The storage structure 1 adopts a container. A slide rail 42 is set on the top of the container. The suspension chain 43 is connected to the slide rail 42 through a slider 4201. A connecting structure 48 is set at the end of the suspension chain 43. Fig. 20 As shown, in this embodiment, the connection structure 48 is a U-shaped connection piece and a bolt, and a connection ring is provided on the seismic source to facilitate disassembly and connection.

[0061] The opening is provided with a cantilever beam 410, which is connected to the top of the storage structure 41, and also includes a truss 412, which is connected to the storage structure 41 and the cantilever beam 410 respectively, to increase the connection strength between the storage structure 1 and the cantilever beam 410 and the torsional strength of the cantilever beam 410. A fixed pulley 411 is provided at the end of the cantilever beam 410, and the first retractable winch 44 is fixed to the top of the opening, and the strand of the first retractable winch 44 passes through the fixed pulley 411 and is connected to the seismic source 47.

[0062] The winding line of the first retractable winch 44 passes around the fixed pulley, and the retractable line direction of the first retractable winch 44 is changed, so that when the seismic source is retracted, one end of the seismic source can be conveniently lifted out of the water, thereby facilitating subsequent operations.

[0063] The second retractable winch 45 is also included. The second retractable winch 45 is arranged on the top inner wall of the storage structure 41 and close to the bow direction. The second retractable winch 45 is used to adjust the posture of the seismic source so that the seismic source in the storage structure 41 is more controllable.

[0064] like Fig.19 As shown, a suspension point crossbeam 4102 is provided on the top inner wall of the storage structure 41 along the width direction, a vertical slide rail suspension beam 4103 is provided under the suspension point crossbeam 4102, the slide rail 42 is installed under the slide rail suspension beam 4103, and the suspension chain 43 is connected to the slide rail 42 through a slider 4201;

[0065] The sliding rail hanging beams 4103 are multiple, and the sliding rail hanging beams near the stern are longer than the sliding rail hanging beams near the bow.

[0066] A plurality of lifting point cross beams 4102 are provided to increase the strength of the top wall of the container. The lifting point cross beam 4102 and the slide rail hanging beam 4103 are both made of I-beams, which are arranged perpendicular to each other. The length of the slide rail hanging beam 4103 gradually increases from the bow to the stern, so that the slide rail 42 has a certain inclination, so that when the slider is in a free state, it can slide to the stern under the action of gravity.

[0067] like Fig.21 As shown, the slide rail 42 includes a straight portion 4203 and a curved portion 4204, wherein the straight portion 4203 is disposed in the storage structure 41, one end of the curved portion 4204 is connected to the straight portion 4203, and the other end is disposed outside the storage structure 41, and the curved portion 4204 has a gathering point 4202, and the gathering point 4202 is lower than both ends of the curved portion 4204;

[0068] Two slide rails 42 are provided in the storage structure 41 , and the curved portions 4204 of the two slide rails gradually approach each other from the bow to the stern and reach the shortest distance at the gathering point 4202 .

[0069] like Fig.18 As shown, the sliders will gather at the gathering point 4202 in a free state, which is convenient for use in recovering the earthquake source. The two slide rails are parallel to each other in the storage structure 41, and the curved portions 4204 of the two slide rails are first close to each other when viewed from a top-down perspective. At the gathering point 4202, the two slide rails are closest to each other. After passing the gathering point 4202, the two slide rails continue to be parallel to each other.

[0070] The stern of the hull 1 has an inclined surface 4601, and the angle between the inclined surface 4601 and the horizontal plane is 40°-60°, and is 50° in this embodiment. The inclined surface 4601 can make the seismic source more convenient during the lowering and recovery process.

[0071] The working process of this embodiment is as follows:

[0072] Recycling process: Fig.15 As shown, the source is in the water, the source head is connected to a gun cable, the strand of the first retractable winch is connected to the source head, and then the first retractable winch is started to pull up the source head, and at the same time, the gun cable winch is started to pull the source toward the ship; Fig.16 As shown in the figure, the source is pulled up the slope and moved toward the ship. During this process, the first retractable winch first retracts the line and then releases the line. The source is pulled to the gathering point. The worker connects the lifting chain to the source and continues to start the gun cable winch to move it into the storage structure. As the source gradually enters the storage structure, the effect of the first retractable winch gradually decreases, and the stranding line can be removed. Fig.17As shown, the strand of the second retractable winch is connected to the seismic source. The head, tail or middle of the seismic source can be connected as needed, and the seismic source is straightened by the second retractable winch so that the seismic source is in a suitable position in the storage structure until the seismic source completely enters the storage structure and the recovery of the seismic source is completed.

[0073] Lowering process: the seismic source is in the storage structure, connect the strand of the first retractable winch to the seismic source, and connect the head, tail or middle of the seismic source as needed, start the first retractable winch, pull the seismic source outward, and start the gun cable winch at the same time to release the gun cable; the seismic source gradually moves to the storage structure, separate the lifting chain from the seismic source, and allow the seismic source to gradually enter the water; after the seismic source completely enters the water, separate the strand of the first retractable winch from the seismic source, and the lowering of the seismic source is completed.

[0074] like Fig. 22 As shown, the node retracting and releasing system 5 is arranged on the side of the airgun seismic source system 4 close to the bow direction, and includes a node charging and downloading module 52, a node transmission auxiliary module 53, a node connector storage module 54, a node retracting and releasing power module 55 and an automatic hooking and unhooking module 51;

[0075] The automatic hook-and-unhook module 51, the node retracting power module 55, and the node connector storage module 54 are arranged in sequence from the stern to the bow on the port side of the main deck of the shallow water geophysical exploration special ship; the node transmission auxiliary module 53 is arranged on the right side of the node retracting power module 55; the node charging download module 52 is arranged on the side of the node transmission auxiliary module 53 close to the bow direction;

[0076] The node charging and downloading module 52 is used for node storage, charging and data downloading. The node charging and downloading module 52 includes multiple rows of storage racks. The node transmission auxiliary module 53 includes an auxiliary conveyor belt arranged along the bow and stern line direction and a slide rail arranged perpendicular to the bow and stern line direction. The auxiliary conveyor belt can slide along the slide rail so that the auxiliary conveyor belt corresponds to different storage racks. The auxiliary conveyor belt is connected to the main conveyor belt to transmit the node to the automatic unhooking module 51.

[0077] The node connector storage module 54 includes a winch, a cable is wound around the winch, a connector is provided on the cable, the cable is connected to the node retractable power module 55, and the node retractable power module 55 includes a motor and a cable roller for conveying the connector to the automatic hooking and unhooking module 51.

[0078] The automatic hooking and unhooking module 51 is used to connect or disconnect the node with the connector. A guide wheel is provided at the stern of the ship, and a slideway is provided between the guide wheel and the automatic hooking and unhooking module 51.

[0079] The node equipment models that can be used in the present invention are: Z100, Z700, Z-Explorer, Mass, GPR, OBX series and other node equipment. The nodes are stored in the node charging and downloading module. When they are needed, the operator places the nodes on the auxiliary conveyor belt, and the main conveyor belt transfers the nodes to the automatic unhooking module. The automatic unhooking of the nodes is a prior art and will not be described here. The node connector storage module 54 includes a winch, and the winch has a connecting rope, and the connecting rope has a connector. The node retracting and releasing power module 55 includes several pairs of rollers, and the connecting rope is provided in the middle of the rollers. The connecting rope is driven to move by the rotation of the rollers.

[0080] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A shallow draft geophysical exploration vessel, comprising a hull (1), wherein the hull (1) has a bulbous bow (2), and is characterized in that: The width of the bulbous bow (2) is greater than its height, the bulbous bow having a side surface and a bottom surface, and in any cross section passing through the bulbous bow, the side surface and the cross section intersect at a first curve (121), and the bottom surface and the cross section intersect at a second curve (122), and the curvature of the first curve (121) is greater than the curvature of the second curve (122); The width of the bottom surface gradually increases from the bow to the stern.

2. A shallow draft geophysical exploration vessel according to claim 1, characterized in that: The bottom surface is smoothly connected to the bottom of the hull (1), and the bottom surface intersects with the mid-longitudinal section at a third curve (123), wherein the curvature of the third curve (123) gradually decreases from the bow direction to the stern direction.

3. The shallow draft geophysical exploration vessel according to claim 1, characterized in that: The width of the cross section of the bulbous bow (2) at the perpendicular line of the hull bow is 45%-55% of the hull width, the maximum height of the bulbous bow (2) is 120%±5% of the designed draft of the hull, and the length of the bulbous bow (2) is 2%±0.5% of the length between the perpendicular lines of the hull.

4. The shallow draft geophysical exploration vessel according to claim 1, characterized in that: The bottom of the hull (1) is a plane, and the port side and the starboard side of the hull (1) are both perpendicular to the bottom of the hull.

5. The shallow draft geophysical exploration vessel according to claim 1, characterized in that: The Fourier number of the hull is 0.170-0.180, the block coefficient is 0.9-0.99, and the designed draft is 2.4m-3m.

6. The shallow draft geophysical exploration vessel according to claim 1, characterized in that: The hull (1) is provided with a DP propulsion system (3), an airgun seismic source system (4) and a node retracting and releasing system (5).

7. The shallow draft geophysical exploration vessel according to claim 6, characterized in that: The DP propulsion system (3) comprises a main propulsion device (31) and a thrust device (32), wherein the main propulsion device (31) comprises two main propellers symmetrically arranged at the stern of the hull, and the distance between the center of the propeller disk of the main propeller and the waterline is 1700 mm±400 mm; the thrust device (32) comprises three bow thruster propellers, and the bow thruster propellers are arranged side by side at equal intervals at the bow of the hull, and the radius of the propeller disk of the bow thruster propeller is 600 mm±150 mm.

8. The shallow draft geophysical exploration vessel according to claim 6, characterized in that: The mounted air gun seismic source system (4) comprises a storage structure (41), a slide rail (42), a lifting chain (43), a first retractable winch (44), a second retractable winch (45) and a gun cable winch (49); The storage structure (41) is arranged at the stern of the hull (1) and has an opening facing the stern of the hull (1); the slide rail (42) is arranged at the top of the storage structure (41) along the length direction of the storage structure (41) and extends out from the opening; A slidable suspension chain (43) is provided on the slide rail (42), and a connection structure (48) for connecting to a seismic source (47) is provided at an end of the suspension chain (43); The first retractable winch (44) is arranged at the opening, the gun cable winch (49) is arranged on the side of the storage structure (41) close to the bow direction, the gun cable is wound around the gun cable winch (49), and the gun cable is connected to the seismic source (47), and the second retractable winch (45) is arranged on the top inner wall of the storage structure (41) and close to the bow direction.

9. The shallow draft geophysical exploration vessel according to claim 6, characterized in that: The node retractable system (5) is arranged on the side of the airgun seismic source system (4) close to the bow direction, and comprises a node charging and downloading module (52), a node transmission auxiliary module (53), a node connector storage module (54), a node retractable power module (55) and an automatic detaching and hanging module (51); The automatic hook-and-unhook module (51), the node retracting and releasing power module (55), and the node connector storage module (54) are arranged in sequence on the port side of the main deck of the shallow water geophysical exploration special vessel from the stern to the bow; the node transmission auxiliary module (53) is arranged on the right side of the node retracting and releasing power module (55); and the node charging and downloading module (52) is arranged on the side of the node transmission auxiliary module (53) close to the bow direction; The node charging and downloading module (52) is used for node storage, charging and data downloading. The node charging and downloading module (52) includes multiple rows of storage racks. The node transmission auxiliary module (53) includes an auxiliary conveyor belt arranged along the bow and stern line direction and a slide rail arranged perpendicular to the bow and stern line direction. The auxiliary conveyor belt can slide along the slide rail so that the auxiliary conveyor belt corresponds to different storage racks. The auxiliary conveyor belt is connected to the main conveyor belt to transmit the node to the automatic unhooking module (51). The node connector storage module (54) comprises a winch, a cable is wound around the winch, a connector is provided on the cable, the cable is connected to the node retractable power module (55), and the node retractable power module (55) comprises a motor and a cable roller, which is used to transport the connector to the automatic hooking and unhooking module (51). The automatic hooking and unhooking module (51) is used to connect or disconnect a node from the connector, a guide wheel is provided at the stern, and a slideway is provided between the guide wheel and the automatic hooking and unhooking module (51).

Images