CN113552613A - Towed body separation structure for three-dimensional seismic acquisition and method thereof - Google Patents

Abstract

The invention provides a towed body separating structure for three-dimensional seismic acquisition and a method thereof, belonging to the technical field of seismic acquisition towed body separators, the towed body separating structure for three-dimensional seismic acquisition comprises an investigation ship, at least two towed body separating devices and towing cables, wherein the two towed body separating devices are connected with the investigation ship through cables, a transverse cable is connected between the two towed body separating devices, the transverse cable is connected with the investigation ship through a front cable, at least one towing cable is connected on the transverse cable, cross data transmission equipment is connected between the two towing cables, the towed body separating device comprises a first shell, a second shell, a first clamping mechanism and a second clamping mechanism, the first clamping mechanism and the second clamping mechanism are fixedly connected in the first shell, the transverse cable can be scattered when the towed bodies are separated from each other, so that corresponding intervals are kept among the towing cables, when the two towing cables are sailed oppositely, the transverse cables can be gathered, and a plurality of towing cables can be gathered to be convenient to recover.

Description

Towed body separation structure for three-dimensional seismic acquisition and method thereof

Technical Field

The invention belongs to the technical field of seismic acquisition towed body separators, and particularly relates to a towed body separation structure for three-dimensional seismic acquisition and a method thereof.

Background

Marine artificial reflection seismic exploration is an important geophysical exploration method. The method has important strategic significance for resource investigation, sedimentary structure unit division, engineering geological disaster investigation and the like, particularly for investigation of energy sources such as marine oil gas, natural gas hydrate and the like. In the conventional three-dimensional seismic exploration, cables are prevented from being wound mutually and are ensured to be safe, and the distance between the cables is relatively large (generally more than 25 meters), so that the transverse resolution of the seismic exploration is relatively low.

A transverse cable dragging type three-dimensional seismic acquisition is a novel artificial reflection seismic detection method, wherein one acquisition transverse cable is unfolded through 2 towed body separators, and a plurality of digital seismic cables are connected with the acquisition transverse cable. The working mode can greatly shorten the cable spacing, thereby improving the transverse resolution of three-dimensional seismic acquisition. The seismic source signal reflected by the sea bottom acquired by the method can obtain high-precision information of the stratum below the sea bottom.

However, in the prior art, the installation and fixation of the 2 tow separator cables and the transverse cables are not ideal enough, and when the tow separator encounters resistance, the cables and the transverse cables are easy to break away, so that a plurality of transverse cables and the seismic acquisition cable are lost, and economic loss is caused.

Disclosure of Invention

The embodiment of the invention provides a towed body separation structure for three-dimensional seismic acquisition and a method thereof, aiming at solving the problems that the installation and fixation of the cable and the transverse cable of the existing 2 towed body separators are not ideal, and the cable and the transverse cable are easy to break away when the towed body separators encounter resistance in actual navigation, so that a plurality of transverse cables and seismic acquisition cables are lost, and economic loss is caused.

In view of the above problems, the technical solution proposed by the present invention is:

a towed body separation structure for three-dimensional seismic acquisition comprises an investigation ship, at least two towed body separation devices and towing cables, wherein the two towed body separation devices are connected with the investigation ship through cables;

the towed body separating device comprises a first shell, a second shell, a first clamping mechanism and a second clamping mechanism, wherein the first clamping mechanism and the second clamping mechanism are fixedly connected inside the first shell, and a vertical pulp board is arranged at the bottom of the second shell;

wherein, the first clamping mechanism comprises a box body, side plates, a first gear, two clamping arms, a pressing seat, a clamping seat, a thread sleeve and a transmission part, the box body is fixedly connected with the bottom of the first shell, the top of the box body is symmetrically and fixedly connected with the two side plates, an opening part is arranged between the two side plates towards the box body, the first gear is positioned in the box body and is rotationally connected with the box body, the clamping arms are positioned between the two side plates and are rotationally connected with the two side plates through a rotating shaft, sawteeth are arranged on the cambered surfaces of the clamping arms close to the first gear, the clamping arms are in meshing connection with the first gear through the sawteeth, the meshing connection part is positioned in the opening part, the pressing seat is fixedly connected on the clamping arms, and the clamping seat is fixedly connected with one side of the box body opposite to the pressing seat, the side wall of the box body is fixedly connected with the threaded sleeve, and the transmission part is arranged below the first gear;

the second clamping mechanism comprises a first sleeve, a second sleeve, a pressing piece and a supporting piece, the first sleeve is fixedly connected to the bottom of the first shell and located on one side opposite to the box body, the second sleeve is located inside the first sleeve, one end of the second sleeve extends to the outer side of the first sleeve, a sliding rail and a sliding groove are radially distributed on the wall face opposite to the first sleeve, the first sleeve passes through the sliding rail and the sliding groove sliding connection of the second sleeve, a plurality of pressing pieces are radially distributed inside the second sleeve, every two adjacent pressing pieces are arranged between the pressing pieces, and the supporting piece is fixedly connected with the first sleeve through an L-shaped connecting rod.

As a preferred embodiment of the present invention, the number of the first clamping mechanism and the second clamping mechanism in each of the first housings is two, one of the first clamping mechanism and the second clamping mechanism is disposed opposite to the other of the first clamping mechanism and the second clamping mechanism, the cable penetrates through the first housing and extends into the first housing to be connected to the one of the first clamping mechanism and the second clamping mechanism, and the lateral cable penetrates through the first housing and extends into the first housing to be connected to the other of the first clamping mechanism and the second clamping mechanism.

As a preferable technical solution of the present invention, a driver, a controller and a distance displacement sensor are arranged inside the second housing, the driver is configured to drive the vertical paddle to change the course, and the driver and the distance displacement sensor are respectively connected to the controller in a communication manner.

As a preferred technical solution of the present invention, the transmission member includes a first rack, a slide way, a bearing seat, a lead screw, and a handle, the first rack is arranged in a "T" shape, the top of the first rack is engaged with the first gear, the slide way is arranged in a "C" shape, the slide way is fixedly connected to the bottom of the box body, the bottom of the first rack is slidably connected to the slide way, one side of the first rack opposite to the thread bushing is connected to the lead screw through the bearing seat, the surface of the lead screw is connected to the thread bushing, one end of the lead screw extends to the outside of the box body, and the end of the lead screw located outside the box body is fixedly connected to the handle.

As a preferable technical solution of the present invention, the pressing member includes a second rack, an arc rack, a rotating wheel, a connecting shaft, and a friction pad, the second rack is fixedly connected to an inner wall of the second sleeve, the arc rack is in meshing connection with the second rack, an arc surface of the arc rack away from the second rack is fixedly connected to the rotating wheel, an axis of the rotating wheel is in keyed connection with the connecting shaft, and the rotating wheel and an arc surface of the arc rack that is symmetrical to each other are fixedly connected to the friction pad and form a cam structure, so that an axis of the second sleeve is formed into a clamping space.

As a preferred technical scheme of the present invention, the supporting member includes a supporting seat, a supporting plate and pulleys, two ends of the connecting shaft are rotatably connected to two adjacent supporting seats respectively, the supporting seat is fixedly connected to the first sleeve through an L-shaped connecting rod, the supporting seat is arranged in a "V" shape, the two supporting plates are fixedly connected to the supporting seat, each supporting plate is rotatably connected to two pulleys through a rotating shaft, and each two pulleys are in contact with one side of the second rack.

In a preferred embodiment of the present invention, a T-shaped handle is fixedly connected to the surface of the second sleeve located outside the first sleeve.

As a preferred technical scheme of the present invention, the towing cable is connected to the transverse cable through a connection assembly, the connection assembly includes an insulating housing, an accommodating cavity, a conductive seat, a conductive pin, a locking sleeve and a tail cover, the insulating housing is arranged in a "T" shape, the accommodating cavity is arranged inside the insulating housing, the shape of the accommodating cavity matches with that of the insulating housing, the conductive seat is arranged inside the accommodating cavity, the conductive seat is matched with the accommodating cavity in shape, a plurality of conductive pins are arranged on three end faces of the conductive seat, the locking sleeve is arranged on three end portions of the insulating housing, and the tail cover is connected to surfaces of the three locking sleeves through threads.

In a preferred embodiment of the present invention, the insulating housing is injection molded from an impact-resistant polystyrene plastic.

In another aspect, the present invention provides a method of operating a tow separation structure for three-dimensional seismic acquisition, comprising the steps of:

s1, the first clamping mechanism clamps: the cable or the transverse cable is clamped by the first clamping mechanism, a reserved part of the length is used for clamping by the second clamping mechanism during clamping, a worker rotates the screw rod through the handle, the screw rod pulls the first rack to slide towards the direction of the threaded sleeve along the slide way under the action of the threaded sleeve, the first gear can drive the first gear to rotate, the clamping arm carries out arc-shaped rotary motion along the clamping seat, and the cable or the transverse cable is clamped by the pressing seat and the clamping seat;

s2, the second clamping mechanism clamps: the worker inserts the cable or the transverse cable with the reserved length of the first clamping mechanism into the clamping space, the second sleeve is pulled through the two handles to enable the sliding groove to move towards the outer side of the first sleeve along the sliding rail of the first sleeve, the second gear drives the arc-shaped rack to enable the rotating wheel to rotate, and then the friction pads are clamped with the cable or the transverse cable to apply resistance;

s3, connecting the transverse cable with a towing cable: one end of each of the two transverse cables and one end of each of the towing cables extend into the three accommodating cavities through the connecting plug respectively, the two transverse cables are arranged oppositely, the conductive pins are inserted into the connecting plugs, the sealing rings are arranged between the two transverse cables and the towing cables and the locking sleeves, and the locking sleeves are tightened by utilizing the tail covers to form sealing;

s4, the towed body separating device changes the heading: when the water surface is used for collecting operation, the distance displacement sensor detects the distance data between the two detection towed body separating devices in real time, and the controller rotates the vertical pulp board through the driver according to the preset value by utilizing the distance data, so that the two towed body separating devices sail in opposite directions or in opposite directions.

Compared with the prior art, the invention has the beneficial effects that:

(1) through the first clamping mechanism that sets up, the staff passes through the rotatory lead screw of handle, and under the effect through the thread bush, the first rack of lead screw pulling slides towards the thread bush direction along the slide, and first gear can drive first gear revolve for the centre gripping arm carries out arc rotary motion along the grip slipper, and then makes the seat that compresses tightly and press from both sides hawser or horizontal cable clamp with the grip slipper.

(2) Through the second clamping mechanism that sets up, pull the second sleeve through two handles and make the spout along the first telescopic slide rail towards first telescopic outside motion, the second rack drives the arc rack and makes the runner carry out rotary motion, and then makes a plurality of friction pads and hawser or horizontal cable press from both sides tightly and exert the resistance, and horizontal cable or dragging cable form the clamping state of L shape after pressing from both sides the dress twice, and the effectual horizontal cable or dragging cable of having avoided breaks away from.

(3) When the towed body separating device is towed by an investigative ship to navigate, the distance displacement sensor detects distance data between two detection towed body separating devices in real time, the controller rotates the vertical pulp board through the driver according to the preset value by utilizing the distance data, so that the two towed body separating devices navigate in opposite directions or in opposite directions, and transverse cables can be scattered during opposite directions, so that corresponding intervals among a plurality of towing cables are kept, and the transverse cables can be gathered during opposite directions navigating, so that the plurality of towing cables can be gathered to be convenient for recovery.

The foregoing description is only an overview of the technical solutions of the present invention, and the embodiments of the present invention are described below in order to make the technical means of the present invention more clearly understood and to make the above and other objects, features, and advantages of the present invention more clearly understandable.

Drawings

FIG. 1 is a schematic structural diagram of a tow separation configuration for three-dimensional seismic acquisition as disclosed herein;

FIG. 2 is a perspective view of a tow separation arrangement for a tow separation structure for three-dimensional seismic acquisition as disclosed herein;

FIG. 3 is a top cross-sectional view of a first housing of a tow separation configuration for three-dimensional seismic acquisition as disclosed herein;

FIG. 4 is a side cross-sectional view of a first clamping mechanism of a tow separation configuration for three-dimensional seismic acquisition as disclosed herein;

FIG. 5 is a schematic side view of a second clamping mechanism of a tow separation structure for three-dimensional seismic acquisition according to the present disclosure;

FIG. 6 is an enlarged view of a portion of FIG. 5 at A;

FIG. 7 is a schematic structural view of a hold-down member of a tow separation structure for three-dimensional seismic acquisition according to the present disclosure;

FIG. 8 is a schematic illustration of a linkage assembly for a tow separation configuration for three-dimensional seismic acquisition according to the present disclosure;

FIG. 9 is a communication connection diagram of a tow separation architecture for three-dimensional seismic acquisition as disclosed herein;

FIG. 10 is a flow chart of the operation of a method of operating a tow separation architecture for three-dimensional seismic acquisition as disclosed herein.

Description of reference numerals: 100. an investigation vessel; 110. a cable; 120. a front guide cable; 130. a transverse cable; 140. a cross data transmission device; 200. a towed body separating device; 210. a first housing; 220. a second housing; 221. a vertical paddle board; 222. a driver; 223. a controller; 224. a distance displacement sensor; 230. a first clamping mechanism; 231. a box body; 232. a side plate; 233. a first gear; 234. a clamp arm; 235. a pressing seat; 236. a clamping seat; 237. a threaded sleeve; 238. a transmission member; 2381. a first rack; 2382. a slideway; 2383. a bearing seat; 2384. a screw rod; 2385. a grip; 240. a second clamping mechanism; 241. a first sleeve; 2411. a slide rail; 242. a second sleeve; 2421. a chute; 243. a compression member; 2431. a second rack; 2432. an arc-shaped rack; 2433. a rotating wheel; 2434. a connecting shaft; 2435. a friction pad; 244. a support member; 2441. a supporting seat; 2442. a support plate; 2443. a pulley; 245. a handle; 300. towing; 310. a connecting assembly; 311. an insulating housing; 312. an accommodating cavity; 313. a conductive seat; 314. a conductive pin; 315. a locking sleeve; 316. and a tail cover.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings of the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.

Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the equipment or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.

Example one

Referring to the attached drawings 1-9, the invention provides a technical scheme: a tow separation structure for three-dimensional seismic acquisition comprises a survey vessel 100, at least two tow separation devices 200 and streamers 300, wherein the two tow separation devices 200 are connected with the survey vessel 100 through cables 110, a transverse cable 130 is connected between the two tow separation devices 200, the transverse cable 130 is connected with the survey vessel 100 through a front guide cable 120, at least one streamer 300 is connected on the transverse cable 130, and a cross data transmission device 140 is connected between the two streamers 300;

referring to fig. 1 to 5, the towed body separating device 200 includes a first housing 210, a second housing 220, a first clamping mechanism 230, and a second clamping mechanism 240, wherein the first clamping mechanism 230 and the second clamping mechanism 240 are both fixedly connected to the inside of the first housing 210, and a vertical paddle 221 is disposed at the bottom of the second housing 220; wherein, the first clamping mechanism 230 comprises a box 231, side plates 232, a first gear 233, a clamping arm 234, a pressing seat 235, a clamping seat 236, a thread sleeve 237 and a transmission member 238, the box 231 is fixedly connected at the bottom of the first shell 210, the top of the box 231 is symmetrically and fixedly connected with the two side plates 232, the box 231 has an opening part facing the two side plates 232, the first gear 233 is positioned in the box 231 and rotatably connected with the box 231, the clamping arm 234 is positioned between the two side plates 232 and rotatably connected with the two side plates 232 through a rotating shaft, the cambered surface of the clamping arm 234 close to the first gear 233 is provided with sawteeth, the clamping arm 234 is in meshing connection with the first gear 233 through the sawteeth, the meshing connection part is positioned in the opening part, the pressing seat 235 is fixedly connected on the clamping arm 234, the clamping seat 236 is fixedly connected at one side of the box 231 opposite to the pressing seat 235, the thread sleeve 237 is fixedly connected with the side wall of the box 231, a transmission member 238 is disposed below the first gear 233.

In this embodiment, when the first clamping mechanism 230 clamps the cable 130 or the towing cable 300, the cable 130 or the towing cable 300 is placed on the clamping seat 236, and the worker transmits kinetic energy to the first gear 233 through the transmission member 238, so as to rotate the first gear 233, and the first gear 233 drives the clamping arm 234 to perform an arc-shaped rotation, so that the clamping seat 235 and the clamping seat 236 clamp the cable 130 or the towing cable 300.

Referring to fig. 1 to 5, the second clamping mechanism 240 includes a first sleeve 241, a second sleeve 242, a pressing member 243 and a support member 244, the first sleeve 241 is fixedly connected to the bottom of the first housing 210 and located on the opposite side of the box 231, the second sleeve 242 is located inside the first sleeve 241, one end of the second sleeve 242 extends to the outer side of the first sleeve 241, a sliding rail 2411 and a sliding groove 2421 are radially distributed on the opposite wall surfaces of the first sleeve 241 and the second sleeve 242, the first sleeve 241 is slidably connected to the sliding groove 2421 of the second sleeve 242 through the sliding rail 2411, a plurality of pressing members 243 are radially distributed inside the second sleeve 242, the support member 244 is arranged between every two adjacent pressing members 243, and the support member 244 is fixedly connected to the first sleeve 241 through an L-shaped connecting rod.

In this embodiment, when the first clamping mechanism 230 is clamped, the cross cable 130 or the towing cable 300 with a reserved length is inserted into the clamping space, and the worker pulls the second sleeve 242 to move the slide groove 2421 along the slide rail 2411 of the first sleeve 241 toward the outer side of the first sleeve 241, so that the pressing member 243 reduces the clamping space to clamp the cross cable 130 or the towing cable 300 and form a strong friction force, thereby well preventing the cross cable 130 or the towing cable from falling off.

Referring to fig. 1 to 2, the number of the first clamping mechanism 230 and the second clamping mechanism 240 in each first housing 210 is two, one of the first clamping mechanism 230 and the second clamping mechanism 240 is disposed opposite to the other of the first clamping mechanism 230 and the second clamping mechanism 240, the cable 110 penetrates through the first housing 210 and extends into the first housing 210 to be connected to the one of the first clamping mechanism 230 and the second clamping mechanism 240, and the transverse cable 130 penetrates through the first housing 210 and extends into the first housing 210 to be connected to the other of the first clamping mechanism 230 and the second clamping mechanism 240.

The transverse cable 130 or the towing cable 300 forms an L-shaped clamping state through the first clamping mechanism 230 and the second clamping mechanism 240, and the separation of the transverse cable 130 or the towing cable 300 is effectively avoided.

Referring to fig. 9, the second casing 220 is provided inside with a driver 222, a controller 223, and a distance-displacement sensor 224, the driver 222 being configured to drive the vertical paddle 221 to change the heading direction, the driver 222 and the distance-displacement sensor 224 being communicatively connected to the controller 223, respectively.

It should be noted that the driver 222 includes any one of a servo motor, a speed reduction motor, a three-phase asynchronous motor, a stepping motor, a variable frequency motor, and a speed regulation motor.

In addition, when the towed body separating apparatus 200 is towed by the survey vessel 100 for navigation, the distance sensor 224 detects distance data between two towed body separating apparatuses 200 in real time, and the controller 223 rotates the vertical paddle 221 through the driver 222 according to a preset value using the distance data, so that the two towed body separating apparatuses 200 are towed in opposite directions or in separated directions, and the transverse cable 130 can be spread out when the separated directions are towed, so that a corresponding interval is maintained between the plurality of towed cables 300, and the transverse cable 130 can be gathered when the separated directions are towed, so that the plurality of towed cables 300 can be gathered for recovery.

Referring to fig. 4 specifically, the transmission member 238 includes a first rack 2381, a slide 2382, a bearing seat 2383, a lead screw 2384 and a handle 2385, the first rack 2381 is arranged in a shape of "T", the top of the first rack 2381 is engaged with the first gear 233, the slide 2382 is arranged in a shape of "C", the slide 2382 is fixedly connected to the bottom of the box 231, the bottom of the first rack 2381 is slidably connected to the slide 2382, one side of the first rack 2381 opposite to the threaded sleeve 237 is connected to the lead screw 2384 through the bearing seat 2383, the surface of the lead screw 2384 is in threaded connection with the threaded sleeve 237, one end of the lead screw 2384 extends to the outer side of the box 231, and the end of the lead screw 2384 located at the outer side of the box 231 is fixedly connected to the handle 2385.

In this embodiment, the screw rod 2384 is rotated by the handle 2385, the screw rod 2384 can be rotated by the action of the bearing block 2383 on one side of the first rack 2381, and the screw rod 2384 is connected with the thread of the thread bushing 237, so that the screw rod 2384 pulls the first rack 2381 to move along the slide 2382 towards the thread bushing 237, and the first gear 233 can be driven to rotate.

Specifically referring to fig. 5 to 7, the pressing member 243 includes a second rack 2431, an arc rack 2432, a rotating wheel 2433, a connecting shaft 2434 and a friction pad 2435, the second rack 2431 is fixedly connected with an inner wall of the second sleeve 242, the arc rack 2432 is in meshed connection with the second rack 2431, the rotating wheel 2433 is fixedly connected to an arc surface of the arc rack 2432 away from the second rack 2431, the connecting shaft 2434 is keyed to an axis of the rotating wheel 2433, and the friction pad 2435 is fixedly connected to the arc surface of the rotating wheel 2433 symmetrical to the arc rack 2432 and forms a cam structure, so that the axis of the second sleeve 242 forms a clamping space.

In this embodiment, the sliding groove 2421 moves along the sliding rail 2411 of the first sleeve 241 to the outside of the first sleeve 241 by pulling the second sleeve 242 through the two handles 245, and the second rack 2431 drives the arc rack 2432 to rotate the rotating wheel 2433 to reduce the clamping space, so that the friction pads 2435 are clamped with the cable 110 or the transverse cable 130 to apply resistance.

Referring to fig. 5 to 7 in particular, the supporting member 244 includes a supporting seat 2441, supporting plates 2442 and pulleys 2443, two ends of the connecting shaft 2434 are rotatably connected to two adjacent supporting seats 2441, the supporting seat 2441 is fixedly connected to the first sleeve 241 through an L-shaped connecting rod, the supporting seat 2441 is arranged in a V shape, the two supporting plates 2442 are fixedly connected to the supporting seat 2441, each supporting plate 2442 is rotatably connected to two pulleys 2443 through a rotating shaft, and each two pulleys 2443 are in contact with one side of the second rack 2431.

In this embodiment, the supporting seat 2441 is fixed on the inner wall of the first sleeve 241 through an L-shaped connecting rod, so that when the second sleeve 242 moves, the supporting seat 2441 is in a stationary state and is used for providing a supporting function for the rotating wheel 2433; the support plate 2442 provides a support for the pulley 2443, the pulley 2443 is rotatably connected to the support plate 2442 via a rotating shaft, and the pulley 2443 provides a support for the second rack 2431.

In an embodiment of the present invention, a surface of the second sleeve 242 located outside the first sleeve 241 is fixedly connected with a pull 245 in a shape of "T". The arrangement of the pull handle 245 facilitates the pulling of the second sleeve 242.

Specifically referring to fig. 8, the cable 300 is connected to the transverse cable 130 through a connection assembly 310, the connection assembly 310 includes an insulating housing 311, an accommodating cavity 312, a conductive seat 313, a conductive pin 314, a locking sleeve 315 and a tail cover 316, the insulating housing 311 is arranged in a "T" shape, the accommodating cavity 312 is arranged inside the insulating housing 311, the accommodating cavity 312 is matched in shape with the insulating housing 311, the conductive seat 313 is arranged inside the accommodating cavity 312, the conductive seat 313 is matched in shape with the accommodating cavity 312, a plurality of conductive pins 314 are arranged on three end faces of the conductive seat 313, a locking sleeve 315 is arranged on three end portions of the insulating housing 311, and the tail cover 316 is connected to surfaces of the three locking sleeves 315 through threads. Not only is convenient to mount and dismount, but also improves the waterproof capability.

Further, the insulating housing 311 is injection molded from an impact resistant polystyrene plastic. The impact-resistant polystyrene plastic not only has an insulating and waterproof effect on the transverse cable 130 or the towing cable 300, but also has the impact-resistant property, so that the impact-resistant capability is improved, and the service life of the insulating shell 311 is prolonged.

Example two

Referring to fig. 10, another working method of a towed body separation structure for three-dimensional seismic acquisition according to an embodiment of the present invention includes the following steps:

s1, the first clamping mechanism 230 clamps: the cable 110 or the transverse cable 130 is clamped by the first clamping mechanism 230, and a reserved length is used for clamping by the second clamping mechanism 240 during clamping, a worker rotates the screw 2384 through the handle 2385, under the action of the threaded sleeve 237, the screw 2384 pulls the first rack 2381 to slide along the slide 2382 towards the threaded sleeve 237, the first gear 233 can drive the first gear 233 to rotate, so that the clamping arm 234 performs arc-shaped rotation motion along the clamping seat 236, and the pressing seat 235 and the clamping seat 236 clamp the cable 110 or the transverse cable 130;

s2, the second clamping mechanism 240 clamps: the worker inserts the cable 110 or the transverse cable 130 with a reserved length of the first clamping mechanism 230 into the clamping space, pulls the second sleeve 242 through the two handles 245 to move the slide groove 2421 along the slide rail 2411 of the first sleeve 241 towards the outer side of the first sleeve 241, and the second rack 2431 drives the arc rack 2432 to rotate the rotating wheel 2433, so that the friction pads 2435 are clamped with the cable 110 or the transverse cable 130 and exert resistance;

s3, connecting the transverse cable 130 with the towing cable 300: one ends of the two transverse cables 130 and the towing cable 300 extend into the three accommodating cavities 312 through connecting plugs respectively, the two transverse cables 130 are arranged oppositely, the conductive pins 314 are inserted into the connecting plugs, sealing rings are arranged between the two transverse cables 130 and the towing cable 300 and the locking sleeve 315, and the locking sleeve 315 is tightened by using a tail cover 316 to form sealing;

s4, the towed body separation device 200 changes the heading: during water surface collection operation, the distance displacement sensor 224 detects distance data between the two detection towed body separating devices 200 in real time, and the controller 223 rotates the vertical paddle 221 through the driver 222 according to the preset value by using the distance data, so that the two towed body separating devices 200 sail in the opposite direction or in the opposite direction.

The embodiment of the invention is realized as follows: the cable 110 or the transverse cable 130 is clamped by the first clamping mechanism 230, and a reserved length is used for clamping by the second clamping mechanism 240 during clamping, a worker rotates the screw 2384 through the handle 2385, under the action of the threaded sleeve 237, the screw 2384 pulls the first rack 2381 to slide along the slide 2382 towards the threaded sleeve 237, the first gear 233 can drive the first gear 233 to rotate, so that the clamping arm 234 performs arc-shaped rotation motion along the clamping seat 236, and the pressing seat 235 and the clamping seat 236 clamp the cable 110 or the transverse cable 130; the worker inserts the cable 110 or the transverse cable 130 with a reserved length of the first clamping mechanism 230 into the clamping space, pulls the second sleeve 242 through the two handles 245 to move the slide groove 2421 along the slide rail 2411 of the first sleeve 241 towards the outer side of the first sleeve 241, and the second rack 2431 drives the arc rack 2432 to rotate the rotating wheel 2433, so that the friction pads 2435 are clamped with the cable 110 or the transverse cable 130 and exert resistance; one ends of the two transverse cables 130 and the towing cable 300 extend into the three accommodating cavities 312 through connecting plugs respectively, the two transverse cables 130 are arranged oppositely, the conductive pins 314 are inserted into the connecting plugs, sealing rings are arranged between the two transverse cables 130 and the towing cable 300 and the locking sleeve 315, and the locking sleeve 315 is tightened by using a tail cover 316 to form sealing; during water surface collection operation, the distance displacement sensor 224 detects distance data between the two detection towed body separating devices 200 in real time, and the controller 223 rotates the vertical paddle 221 through the driver 222 according to the preset value by using the distance data, so that the two towed body separating devices 200 sail in the opposite direction or in the opposite direction.

It should be noted that the model specifications of the controller 223 and the distance displacement sensor 224 need to be determined by type selection according to the actual specification of the device, and the specific type selection calculation method adopts the prior art in the field, so detailed description is omitted.

The power supply of the controller 223 and the distance-displacement sensor 224 and the principle thereof will be apparent to those skilled in the art and will not be described in detail herein.

The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes may be made to the present invention by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (10)

1. A towed body separation structure for three-dimensional seismic acquisition comprises an investigation ship, at least two towed body separation devices and towing cables, wherein the two towed body separation devices are connected with the investigation ship through cables, a transverse cable is connected between the two towed body separation devices, the transverse cable is connected with the investigation ship through a front guiding cable, at least one towing cable is connected to the transverse cable, and cross data transmission equipment is connected between the two towing cables, and the towed body separation structure is characterized in that:

the towed body separating device comprises a first shell, a second shell, a first clamping mechanism and a second clamping mechanism, wherein the first clamping mechanism and the second clamping mechanism are fixedly connected inside the first shell, and a vertical pulp board is arranged at the bottom of the second shell;

wherein, the first clamping mechanism comprises a box body, side plates, a first gear, two clamping arms, a pressing seat, a clamping seat, a thread sleeve and a transmission part, the box body is fixedly connected with the bottom of the first shell, the top of the box body is symmetrically and fixedly connected with the two side plates, an opening part is arranged between the two side plates towards the box body, the first gear is positioned in the box body and is rotationally connected with the box body, the clamping arms are positioned between the two side plates and are rotationally connected with the two side plates through a rotating shaft, sawteeth are arranged on the cambered surfaces of the clamping arms close to the first gear, the clamping arms are in meshing connection with the first gear through the sawteeth, the meshing connection part is positioned in the opening part, the pressing seat is fixedly connected on the clamping arms, and the clamping seat is fixedly connected with one side of the box body opposite to the pressing seat, the side wall of the box body is fixedly connected with the threaded sleeve, and the transmission part is arranged below the first gear;

the second clamping mechanism comprises a first sleeve, a second sleeve, a pressing piece and a supporting piece, the first sleeve is fixedly connected to the bottom of the first shell and located on one side opposite to the box body, the second sleeve is located inside the first sleeve, one end of the second sleeve extends to the outer side of the first sleeve, a sliding rail and a sliding groove are radially distributed on the wall face opposite to the first sleeve, the first sleeve passes through the sliding rail and the sliding groove sliding connection of the second sleeve, a plurality of pressing pieces are radially distributed inside the second sleeve, every two adjacent pressing pieces are arranged between the pressing pieces, and the supporting piece is fixedly connected with the first sleeve through an L-shaped connecting rod.

2. The towed body separation structure for three-dimensional seismic acquisition as defined in claim 1, wherein the number of said first clamping means and said second clamping means in each of said first housings is two, one of said first clamping means and said second clamping means is disposed opposite to the other of said first clamping means and said second clamping means, said cable is extended through said first housing and into said first housing to be connected to one of said first clamping means and said second clamping means, respectively, and said transverse cable is extended through said first housing and into said first housing to be connected to the other of said first clamping means and said second clamping means, respectively.

3. The tow separation structure for three-dimensional seismic acquisition according to claim 1, wherein the second housing is internally provided with a driver, a controller and a distance displacement sensor, the driver is configured to drive the vertical paddle to change the course, and the driver and the distance displacement sensor are respectively in communication with the controller.

4. The towed body separation structure for three-dimensional seismic acquisition of claim 1, wherein the transmission member includes a first rack, a slide, a bearing seat, a lead screw and a handle, the first rack is arranged in a shape of "T", the top of the first rack is in meshed connection with the first gear, the slide is arranged in a shape of "C", the slide is fixedly connected to the bottom of the box body, the bottom of the first rack is in sliding connection with the slide, one side of the first rack opposite to the thread bush is connected with the lead screw through the bearing seat, the surface of the lead screw is in threaded connection with the thread bush, one end of the lead screw extends to the outer side of the box body, and the lead screw is located at the end fixedly connected with the handle outside the box body.

5. The towed body separation structure for three-dimensional seismic acquisition as claimed in claim 1, wherein said compression member comprises a second rack, an arc-shaped rack, a rotating wheel, a connecting shaft and a friction pad, said second rack is fixedly connected to the inner wall of said second sleeve, said arc-shaped rack is in gear engagement with said second rack, said rotating wheel is fixedly connected to the arc surface of said arc-shaped rack away from said second rack, said connecting shaft is keyed to the axis of said rotating wheel, said friction pad is fixedly connected to the arc surface of said rotating wheel symmetrical to said arc-shaped rack and forms a cam structure, so that the axis of said second sleeve is formed into a clamping space.

6. The towed body separating structure for three-dimensional seismic acquisition as claimed in claim 5, wherein said supporting member comprises a supporting base, supporting plates and pulleys, two ends of said connecting shaft are rotatably connected to two adjacent supporting bases, said supporting base is fixedly connected to said first sleeve through an L-shaped connecting rod, said supporting base is disposed in a V shape, two supporting plates are fixedly connected to said supporting base, each supporting plate is rotatably connected to two pulleys through a rotating shaft, and each two pulleys are in contact with one side of said second rack.

7. The tow separation structure for three-dimensional seismic acquisition according to claim 5, wherein a T-shaped handle is fixedly connected to the surface of the second sleeve, which is positioned on the outer side of the first sleeve.

8. The towed body separating structure for three-dimensional seismic acquisition according to claim 1, wherein the towing cable is connected with the transverse cable through a connecting assembly, the connecting assembly comprises an insulating shell, an accommodating cavity, a conductive seat, conductive pins, a locking sleeve and a tail cover, the insulating shell is arranged in a T shape, the accommodating cavity is arranged inside the insulating shell, the shape of the accommodating cavity is matched with that of the insulating shell, the conductive seat is arranged inside the accommodating cavity, the shape of the conductive seat is matched with that of the accommodating cavity, a plurality of conductive pins are arranged on three end faces of the conductive seat, the locking sleeve is arranged on three end portions of the insulating shell, and the tail cover is in threaded connection with the surfaces of the three locking sleeves.

9. The tow separation structure for three-dimensional seismic acquisition of claim 8, wherein the insulating housing is injection molded from high impact polystyrene plastic.

10. A working method of a towed body separation structure for three-dimensional seismic acquisition, which is applied to the towed body separation structure for three-dimensional seismic acquisition of any one of claims 1 to 9, is characterized by comprising the following steps:

s1, the first clamping mechanism clamps: the cable or the transverse cable is clamped by the first clamping mechanism, a reserved part of the length is used for clamping by the second clamping mechanism during clamping, a worker rotates the screw rod through the handle, the screw rod pulls the first rack to slide towards the direction of the threaded sleeve along the slide way under the action of the threaded sleeve, the first gear can drive the first gear to rotate, the clamping arm carries out arc-shaped rotary motion along the clamping seat, and the cable or the transverse cable is clamped by the pressing seat and the clamping seat;

s2, the second clamping mechanism clamps: the worker inserts the cable or the transverse cable with the reserved length of the first clamping mechanism into the clamping space, the second sleeve is pulled through the two handles to enable the sliding groove to move towards the outer side of the first sleeve along the sliding rail of the first sleeve, the second gear drives the arc-shaped rack to enable the rotating wheel to rotate, and then the friction pads are clamped with the cable or the transverse cable to apply resistance;

s3, connecting the transverse cable with a towing cable: one end of each of the two transverse cables and one end of each of the towing cables extend into the three accommodating cavities through the connecting plug respectively, the two transverse cables are arranged oppositely, the conductive pins are inserted into the connecting plugs, the sealing rings are arranged between the two transverse cables and the towing cables and the locking sleeves, and the locking sleeves are tightened by utilizing the tail covers to form sealing;

s4, the towed body separating device changes the heading: when the water surface is used for collecting operation, the distance displacement sensor detects the distance data between the two detection towed body separating devices in real time, and the controller rotates the vertical pulp board through the driver according to the preset value by utilizing the distance data, so that the two towed body separating devices sail in opposite directions or in opposite directions.

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