CN111847136A - Device and method for laying and recovering seismic cable of geophysical prospecting ship with A-shaped frame - Google Patents
Device and method for laying and recovering seismic cable of geophysical prospecting ship with A-shaped frame Download PDFInfo
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- CN111847136A CN111847136A CN202010595271.1A CN202010595271A CN111847136A CN 111847136 A CN111847136 A CN 111847136A CN 202010595271 A CN202010595271 A CN 202010595271A CN 111847136 A CN111847136 A CN 111847136A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H75/00—Storing webs, tapes, or filamentary material, e.g. on reels
- B65H75/02—Cores, formers, supports, or holders for coiled, wound, or folded material, e.g. reels, spindles, bobbins, cop tubes, cans, mandrels or chucks
- B65H75/34—Cores, formers, supports, or holders for coiled, wound, or folded material, e.g. reels, spindles, bobbins, cop tubes, cans, mandrels or chucks specially adapted or mounted for storing and repeatedly paying-out and re-storing lengths of material provided for particular purposes, e.g. anchored hoses, power cables
- B65H75/38—Cores, formers, supports, or holders for coiled, wound, or folded material, e.g. reels, spindles, bobbins, cop tubes, cans, mandrels or chucks specially adapted or mounted for storing and repeatedly paying-out and re-storing lengths of material provided for particular purposes, e.g. anchored hoses, power cables involving the use of a core or former internal to, and supporting, a stored package of material
- B65H75/40—Cores, formers, supports, or holders for coiled, wound, or folded material, e.g. reels, spindles, bobbins, cop tubes, cans, mandrels or chucks specially adapted or mounted for storing and repeatedly paying-out and re-storing lengths of material provided for particular purposes, e.g. anchored hoses, power cables involving the use of a core or former internal to, and supporting, a stored package of material mobile or transportable
- B65H75/42—Cores, formers, supports, or holders for coiled, wound, or folded material, e.g. reels, spindles, bobbins, cop tubes, cans, mandrels or chucks specially adapted or mounted for storing and repeatedly paying-out and re-storing lengths of material provided for particular purposes, e.g. anchored hoses, power cables involving the use of a core or former internal to, and supporting, a stored package of material mobile or transportable attached to, or forming part of, mobile tools, machines or vehicles
- B65H75/425—Cores, formers, supports, or holders for coiled, wound, or folded material, e.g. reels, spindles, bobbins, cop tubes, cans, mandrels or chucks specially adapted or mounted for storing and repeatedly paying-out and re-storing lengths of material provided for particular purposes, e.g. anchored hoses, power cables involving the use of a core or former internal to, and supporting, a stored package of material mobile or transportable attached to, or forming part of, mobile tools, machines or vehicles attached to, or forming part of a vehicle, e.g. truck, trailer, vessel
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H75/00—Storing webs, tapes, or filamentary material, e.g. on reels
- B65H75/02—Cores, formers, supports, or holders for coiled, wound, or folded material, e.g. reels, spindles, bobbins, cop tubes, cans, mandrels or chucks
- B65H75/34—Cores, formers, supports, or holders for coiled, wound, or folded material, e.g. reels, spindles, bobbins, cop tubes, cans, mandrels or chucks specially adapted or mounted for storing and repeatedly paying-out and re-storing lengths of material provided for particular purposes, e.g. anchored hoses, power cables
- B65H75/38—Cores, formers, supports, or holders for coiled, wound, or folded material, e.g. reels, spindles, bobbins, cop tubes, cans, mandrels or chucks specially adapted or mounted for storing and repeatedly paying-out and re-storing lengths of material provided for particular purposes, e.g. anchored hoses, power cables involving the use of a core or former internal to, and supporting, a stored package of material
- B65H75/44—Constructional details
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H75/00—Storing webs, tapes, or filamentary material, e.g. on reels
- B65H75/02—Cores, formers, supports, or holders for coiled, wound, or folded material, e.g. reels, spindles, bobbins, cop tubes, cans, mandrels or chucks
- B65H75/34—Cores, formers, supports, or holders for coiled, wound, or folded material, e.g. reels, spindles, bobbins, cop tubes, cans, mandrels or chucks specially adapted or mounted for storing and repeatedly paying-out and re-storing lengths of material provided for particular purposes, e.g. anchored hoses, power cables
- B65H75/38—Cores, formers, supports, or holders for coiled, wound, or folded material, e.g. reels, spindles, bobbins, cop tubes, cans, mandrels or chucks specially adapted or mounted for storing and repeatedly paying-out and re-storing lengths of material provided for particular purposes, e.g. anchored hoses, power cables involving the use of a core or former internal to, and supporting, a stored package of material
- B65H75/44—Constructional details
- B65H75/4457—Arrangements of the frame or housing
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2701/00—Handled material; Storage means
- B65H2701/30—Handled filamentary material
- B65H2701/34—Handled filamentary material electric cords or electric power cables
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- Bridges Or Land Bridges (AREA)
Abstract
The invention relates to the field of seismic survey operation of comprehensive geophysical prospecting ships, in particular to a device and a method for laying and recovering seismic cables of a geophysical prospecting ship with an A-shaped frame. The system comprises a cable lifting point bearing mechanism, a movable type step bridge mechanism and a movable type wind and rain shielding mechanism, wherein the cable lifting point bearing mechanism and the movable type wind and rain shielding mechanism are arranged on an open deck, the movable type step bridge mechanism is arranged on a seismic cable deck, and the cable lifting point bearing mechanism and the movable type wind and rain shielding mechanism are located above the movable type step bridge mechanism. The problem that the seismic cable is arranged and recovered to interfere with the A-shaped frame is solved, the geophysical prospecting ship loaded with the large A-shaped frame is provided with the capability of arranging and recovering the seismic cable in the middle of the stern, and a foundation is laid for the geophysical prospecting ship to achieve two functions of seismic investigation and geological sampling investigation.
Description
Technical Field
The invention relates to the field of seismic survey operation of comprehensive geophysical prospecting ships, in particular to a device and a method for laying and recovering seismic cables of a geophysical prospecting ship with an A-shaped frame.
Background
The geophysical exploration ship (referred to as a geophysical exploration ship for short) is an investigation ship mainly for geophysical investigation, a plurality of seismic surveys are common operation modes for the geophysical investigation, seismic waves are emitted to the seabed through a seismic source (mainly an air gun), and a detector (a seismic cable) receives signals, so that the geophysical exploration ship can be used for seabed geological structure research and seabed oil and gas resource exploration. Seabed geological sampling survey is a survey mode for researching seabed shallow surface geology, and a large A-type frame system, various geological sampling devices and the like are taken as main means.
The multi-channel seismic survey system is complex and generally comprises subsystems such as a comprehensive navigation positioning system, an air gun and retraction system (arranged on a tail deck), a seismic cable and retraction system (arranged on the tail deck), a seismic source air compressor system, a seismic acquisition design and data processing system and the like. The geological sampling investigation operation mainly comprises an A-shaped frame, a towing winch, geological sampling equipment and the like.
The tail deck of the geophysical prospecting ship can be generally divided into an air gun deck, a seismic cable deck and an open-air deck according to functions, a hoisting point for laying the seismic cable is generally fixed at the lower part of the open-air deck, and an operator stands at the tail of the seismic cable deck to mount equipment such as water birds and the like. The A-shaped frame for geological survey operation is arranged in the middle of the stern and is generally designed in an open air mode, or the A-shaped frame penetrates through a deck at the tail part, so that the stern is provided with an A-shaped frame operation space. To arrange the A-shaped frame on the geophysical prospecting ship, a large opening needs to be arranged on a tail deck, so that the following defects exist in the geophysical prospecting ship:
firstly, the seismic cable (the length can reach 8 kilometers at the longest) is influenced by ship navigation, ocean currents and the like, and is not completely parallel to the ship, so that the cable hoisting point is generally arranged close to the tail part as much as possible, and the cable and accessories thereof are prevented from being scraped by the A-shaped frame or structures on two sides of the tail part. However, the A-shaped frame enables the weather deck to be large in opening, so that the hoisting point of the seismic cable is short of a proper fixed position at the tail of the weather deck, personnel do not have a proper operation position in the middle of the seismic cable deck, and water birds and other equipment on the seismic cable are easy to scrape against the A-shaped frame, so that the laying and recovery of the seismic cable are interfered with the A-shaped frame, and the geophysical prospecting ship is difficult to achieve two functions of seismic investigation and geological sampling investigation.
Secondly, the large opening of the seismic cable deck can cause that personnel do not have proper operation positions in the middle of the seismic cable deck and behind the cable hoisting point, and the installation and the recovery of cable accessories such as water birds and the like are influenced.
Thirdly, as the seismic cable is long, the laying and recovery operation duration can reach days or even a week when a plurality of cables operate, and therefore, the requirement on the personnel operation environment is high. The large opening of each deck can make the operation area open-air not shelter from, causes to lay and retrieve the operation and is easily influenced by marine weather environment.
Disclosure of Invention
The invention aims to overcome the defects in the prior art, and provides a device and a method for laying and recovering seismic cables of a geophysical prospecting ship with an A-shaped frame, which solve the problem of interference between laying and recovering the seismic cables and the A-shaped frame, enable the geophysical prospecting ship loaded with a large A-shaped frame to have the capability of laying and recovering the seismic cables in the middle of the stern, and lay a foundation for realizing two functions of seismic investigation and geological sampling investigation of the geophysical prospecting ship.
The technical scheme of the invention is as follows: a geophysical prospecting ship seismic cable laying and recovering device with an A-shaped frame comprises a cable hoisting point bearing mechanism, a movable type step bridge mechanism and a movable type wind and rain shielding mechanism, wherein the cable hoisting point bearing mechanism and the movable type wind and rain shielding mechanism are arranged on an open deck;
The cable hoisting point bearing mechanism comprises a cable hoisting point bearing beam and an open deck track, the open deck track is arranged on two side edges of an open deck opening along the length direction of the material ship respectively, the open deck track is fixedly connected with the inner wall of the open deck opening, two ends of the cable hoisting point bearing beam are respectively positioned on the open deck track, the cable hoisting point bearing beam slides along the open deck track, the cable hoisting point bearing beam is fixedly connected with the open deck through a connecting mechanism, a limiting plate is fixed at one end of the open deck track, which faces the A-type frame, the bottom of the cable hoisting point bearing beam is fixedly provided with a plurality of cable hoisting points, and the seismic cable is wound on the cable hoisting points;
the movable type foot bridge mechanism comprises a movable type foot bridge and a seismic cable deck track, wherein the two side edges of the opening of the seismic cable deck along the length direction of the material ship are respectively provided with the seismic cable deck track, the seismic cable deck track is fixedly connected with the inner wall of the opening of the seismic cable deck, one end, facing the A-shaped frame, of the seismic cable deck track is fixedly provided with a limiting plate, the bottom of the movable type foot bridge is provided with foot bridge rollers, the foot bridge rollers are positioned on the seismic cable deck track and slide along the seismic cable deck track, the movable type foot bridge and the seismic cable deck are fixedly connected through a connecting mechanism, the movable type foot bridge is provided with guardrails along the edges of the foot bridge, and a guardrail steel wire rope is connected among the guard;
The movable wind and rain shielding mechanism comprises a light cover plate and longitudinal ribs, a plurality of longitudinal ribs arranged at intervals are connected between the side edge of the length direction of the cable lifting point bearing beam and the weather deck, and two ends of each longitudinal rib are fixedly connected with the cable lifting point bearing beam and the weather deck respectively.
According to the invention, the cable lifting point carrier beam is of a double-I-shaped steel structure, and the plurality of cross beam lifting rings are arranged at the top of the cable lifting point carrier beam, so that the cable lifting point carrier beam is lifted.
The connecting mechanism between the cable lifting point bearing beam and the weather deck comprises a beam eye plate I, a beam eye plate II and beam bolts, wherein the beam eye plate I is fixed at the end part of the cable lifting point bearing beam facing the weather deck, the corresponding beam eye plate II is fixed on the upper surface of the weather deck, and the beam eye plate I is fixedly connected with the beam eye plate II through the beam bolts.
Connecting mechanism between portable walking bridge and the seismic cable deck includes walking bridge eye plate, rotatable eye plate and walking bridge bolt, and portable walking bridge is fixed with walking bridge eye plate towards the tip outside on seismic cable deck, is equipped with rotatable eye plate on the seismic cable deck that corresponds, passes through walking bridge bolt fixed connection between walking bridge eye plate and the rotatable eye plate.
The end part outer sides of the longitudinal ribs are fixedly provided with cover plate eye plates I, the tops of the corresponding cable hoisting point bearing beams and the weather deck are respectively fixedly provided with cover plate eye plates II, the cover plate eye plates I are fixedly connected with the cover plate eye plates II through bolts, the light cover plate is placed between the two adjacent longitudinal ribs, and the top of the light cover plate is provided with a movable cover plate hanging ring. Through the movable cover plate hanging ring, the hoisting of the light cover plate is realized.
The invention also comprises a method for realizing the laying and recycling of the seismic cable by using the device, which comprises the following steps:
s1, installing an A-shaped frame seismic cable laying and recycling device:
and operating the A-shaped frame, lodging the A-shaped frame outwards to the position near a deck strut at the tail part of the ship, reserving installation positions of the cable hoisting point bearing mechanism and the movable type step bridge mechanism, and installing the A-shaped frame through the following detailed steps:
s1.1, installing a movable type step bridge:
installing a guardrail and a guardrail steel wire rope on a movable type walking bridge, hoisting the movable type walking bridge to a track of a seismic cable deck to enable the end part of the movable type walking bridge to be aligned with a limiting plate, and fixing the movable type walking bridge on the seismic cable deck through a walking bridge eye plate and a bolt;
s1.2, installing a cable hoisting point carrier beam:
fixing the seismic cable hoisting point at the lower part of the cable hoisting point carrier beam, hoisting the cable hoisting point carrier beam to the weather deck track to enable the end part of the cable hoisting point carrier beam to be aligned with the limiting device, and then fixedly connecting the cable hoisting point carrier beam with the weather deck through the beam eye plate I, the beam eye plate II and the beam bolt.
S1.3, installing a movable wind and rain shielding mechanism:
the light movable cover plate is sequentially placed among the longitudinal frame, the cable lifting point bearing beam and the weather deck, and the two ends of the longitudinal frame are fixedly connected with the cable lifting point bearing beam and the weather deck respectively by utilizing the cover plate eye plate I, the cover plate eye plate II and the bolt to form a movable wind and rain shielding mechanism;
s2, moving the movable type step bridge to a first operation area, and mounting the seismic cable in the first operation area by using the step bridge:
the movable type walking bridge with the rollers is pushed to a first operation area under a cable lifting point bearing beam to be fixed, and an operator hangs a safety hook lock and passes a seismic cable through the cable lifting point to be hung;
s3, moving the movable type step bridge to a second operation area, and installing accessories such as water birds and the like in the second operation area by utilizing the step bridge:
pushing the movable type walking bridge with the rollers to a second operation area behind a cable lifting point to be fixed, starting a cable winch to release the seismic cable, and installing a cable accessory behind the lifting point by an operator;
s4, operation and recovery of the seismic cable:
and after the seismic cable is laid, evacuating the operators, returning the operators to the second operation area after the seismic cable investigation operation is finished, and recovering the cable while disassembling the seismic cable accessories until all the cables are recovered.
In the invention, the installation position of the seismic cable hoisting point can be selected according to the operation mode. During single-cable operation, the seismic cable hoisting point is arranged at the central position of the cable hoisting point carrier beam, and during double-cable operation, the seismic cable hoisting point is arranged at the hanging point positions at two sides. Using a crane provided on the vessel.
After the operation is finished, if the A-shaped frame operation is carried out, the movable wind and rain shielding mechanism, the cable hoisting point bearing beam and the movable walking bridge are sequentially dismounted from the upper layer to the lower layer and are placed in the open deck storage position.
The invention has the beneficial effects that:
1) the cable hoisting point bearing beam adopts a double-I-shaped steel structure and is fixed at the tail part of the large opening of the weather deck, so that the structure is light, the multidirectional bearing capacity is strong, the disassembly and the assembly are convenient, and a plurality of cable hoisting points can be welded;
2) the bottom of the movable type walking bridge is provided with a roller structure which is fixed at the tail part of the large opening of the seismic cable deck and is movable and convenient to disassemble and assemble;
3) the movable wind and rain shielding device is fixed between the cable hoisting point bearing beam and the top weather deck, so that the installation and the disassembly are convenient, the lower operation area is shielded, and the influence of the external environment on the geophysical prospecting ship in the operation process is reduced;
4) the problem that the seismic cable is laid and recycled and interferes with the A-shaped frame is solved, and a foundation is laid for realizing multiple seismic surveys and geological sampling surveys of the geophysical prospecting ship;
5) A reasonable operation area is provided for the laying and recovery operation of the seismic cables, and long-time normal operation in the offshore wind and rain environment is realized through the wind-movable wind and rain shielding device.
6) The conventional crane of the survey ship can be used for mounting or dismounting, and after dismounting, the A-shaped frame survey operation can be implemented, so that the operation efficiency and the sailing rate of the ship can be effectively improved.
Drawings
FIG. 1 is a front view of the present invention;
FIG. 2 is a sectional view taken along line A-A of FIG. 1;
FIG. 3 is a sectional view taken along line B-B of FIG. 1;
FIG. 4 is a top view of the weather deck;
FIG. 5 is a top view of a seismic cable deck;
FIG. 6 is an enlarged partial cross-sectional view of an end of the cable suspension point carrier beam;
fig. 7 is an enlarged partial cross-sectional view of the end of the mobile bridge.
In the figure: 1A type frame; 2, open deck; 3 seismic cable decks; 4, a gas array deck; 5, a cable hoisting point bearing beam; 6, cable hoisting points; 7 movable wind and rain shielding mechanism; 8 weather deck rails; 9 a mobile bridge; 9' step bridge storage plate; 10, protecting the fence; 11 seismic cable deck rails; 12 a limiting plate; 13 cover plate eye plate I; 14 cover plate eye plate II; 15, bolts; 16 removable cover hanging rings; 17 cross beam hoisting rings; 18 guardrail wire ropes; 19 step bridge roller wheels; 20 beam eye plate I; 21 cross beam eye plate II; 22 beam bolts; 23 step bridge eye plate; 24 step bridge bolts; 25 a first work area; 26 a second work area; 27 a rotatable eye plate; 28 a seismic cable; 29 longitudinal bone; 30 light cover plate.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below.
In the following description, specific details are set forth in order to provide a thorough understanding of the present invention. The invention can be implemented in a number of ways different from those described herein and similar generalizations can be made by those skilled in the art without departing from the spirit of the invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.
As shown in figure 1, the seismic cable laying and recovering device with the A-shaped frame geophysical prospecting ship and the A-shaped frame 1 are both positioned in a large opening at the tail of the ship, and the device is positioned in front of the A-shaped frame 1. The system comprises a cable hoisting point bearing mechanism, a movable type step bridge mechanism and a movable type wind and rain shielding mechanism, wherein the cable hoisting point bearing mechanism and the movable type wind and rain shielding mechanism are arranged on an open deck 2, and the movable type step bridge mechanism is arranged on a seismic cable deck 3. As shown in fig. 2, the tail deck of the geophysical prospecting ship is sequentially provided with an air array deck 4, a seismic cable deck 3 and a weather deck 2 from bottom to top, so that the cable hoisting point bearing mechanism and the movable weather shielding mechanism are positioned above the movable type step bridge mechanism, hoisting points used in the cable arrangement and recovery device are installed on the cable hoisting point bearing mechanism, operating personnel stand on the movable type step bridge mechanism during operation, the movable weather shielding mechanism can shield a lower operation area, and the influence of the external environment on the geophysical prospecting ship in the operation process is reduced.
As shown in fig. 1, 3 and 4, the cable lifting point carrying mechanism comprises a cable lifting point carrying beam 5 and weather deck rails 8, the weather deck rails 8 are respectively arranged on two sides of the opening of the weather deck 2 along the length direction of the material ship, and the weather deck rails 8 are fixedly connected with the inner wall of the opening of the weather deck 2. The cable lifting point carrier beam 5 is of a double-I-shaped steel structure, two ends of the cable lifting point carrier beam 5 are respectively located on the weather deck rails 8, the cable lifting point carrier beam 5 can slide along the weather deck rails 8, and after the cable lifting point carrier beam 5 slides to a designated position, the cable lifting point carrier beam 5 is fixedly connected with the weather deck 2. The weather deck track 8 is fixed with limiting plate 12 towards the one end of A type frame, through setting up limiting plate 12, can prevent that cable hoisting point carrier bar 5 from droing from weather deck track 8 when the eye plate from damaging on the one hand, and on the other hand, when installing cable hoisting point carrier bar 5, limiting plate 12 is hugged closely to the tip of cable hoisting point carrier bar 5, has realized the location of cable hoisting point carrier bar 5, guarantees the level of cable hoisting point carrier bar 5. The top of the cable lifting point carrier beam 5 is provided with a plurality of cross beam lifting rings 17, so that the cable lifting point carrier beam 5 is lifted. The bottom of the cable hoisting point carrier beam 5 is fixed with a plurality of cable hoisting points 6, and the seismic cable 28 is wound on the cable hoisting points 6 and can provide a supporting point for the laying and recovery operation of single cables, double cables or multiple cables at the stern. The cable hoisting point carrier beam 5 has light structure, strong multidirectional bearing capacity and convenient disassembly and assembly.
As shown in fig. 6, a beam eye plate i 20 is fixed at the end of the cable lifting point carrier beam 5 facing the weather deck 2, a beam eye plate ii 21 is correspondingly fixed on the upper surface of the weather deck 2, and the beam eye plate i 20 and the beam eye plate ii 21 are fixedly connected through a beam bolt 22, so that the fixed connection between the cable lifting point carrier beam 5 and the weather deck 2 is realized.
As shown in fig. 1, 3, 5 and 7, the mobile bridge mechanism includes a mobile bridge 9 and seismic cable deck rails 11, the seismic cable deck rails 11 are respectively arranged on two sides of the opening of the seismic cable deck along the length direction of the material vessel, and the seismic cable deck rails 11 are fixedly connected with the inner wall of the opening of the seismic cable deck 2. Limiting plates 12 are fixed to one ends, facing the A-shaped frame, of the seismic cable deck tracks 11, the two ends of the movable type foot bridge 9 are aligned through the limiting plates 12, and the level of the movable type foot bridge 9 is guaranteed. The bottom of the mobile bridge 9 is provided with bridge rollers 19, and the bridge rollers 19 are positioned on the seismic cable deck rails 11 and can slide along the seismic cable deck rails 11. The operator stands on the movable type foot bridge 9 during operation, and the operator can complete related operations in the first operation area 25 and the second operation area 26 at different positions through the movement of the movable type foot bridge 9. The movable type step bridge 9 is provided with guardrails 10 along the edges of the step bridge, guardrail steel wire ropes 18 are connected between the guardrails 10, and the operating personnel on the movable type step bridge 9 are protected through the guardrails 10 and the guardrail steel wire ropes 18.
The mobile walking bridge 9 can slide along the seismic cable deck track 11, and for convenient operation, the mobile walking bridge 9 can be directly dragged along the seismic cable deck track 11 by operating personnel. After the mobile bridge 9 is pulled into position, the mobile bridge 9 is fixed on the seismic cable deck 3. The movable type foot bridge is fixed with foot bridge eye plate 23 towards the outer side of the end part of the seismic cable deck, a rotatable eye plate 27 is arranged on the corresponding seismic cable deck 3, and when the movable type foot bridge 9 slides along the seismic cable deck track 11 and needs to pass through the rotatable eye plate 27, the rotatable eye plate 27 can leave a passage, so that the movable type foot bridge 9 is prevented from moving. When the position of the movable type foot bridge 9 needs to be fixed, the foot bridge eye plates 23 and the rotatable eye plates 27 are fixedly connected through the foot bridge bolts 24, and the fixed connection between the movable type foot bridge 9 and the seismic cable deck 3 is realized.
Portable foot bridge mechanism can also include foot bridge and deposit board 9 ', and the foot bridge is placed on foot bridge deposits board 9', and the tip that board 9 'was deposited to the foot bridge also sets up on seismic cable deck track 11, and foot bridge deposits board 9' and can slide along seismic cable deck track 11, and during installation portable foot bridge 9, each spare part of portable foot bridge is placed on foot bridge deposits board 9 ', and it can to take off the installation from foot bridge deposits board 9' with spare part. The footbridge storage plate 9 'and the seismic cable deck can be fixedly connected, and the footbridge storage plate 9' is fixed on the seismic cable deck in the operation process. The fixed connection between the deck plate 9' and the seismic cable deck is the same as the fixed connection between the mobile bridge and the seismic cable deck, and therefore, the details are not repeated herein.
As shown in fig. 1 and 4, the movable weather shielding mechanism 7 includes a lightweight cover plate 30 and longitudinal beams 29, a plurality of longitudinal beams 29 are connected between the side edges of the cable suspension point carrier beam 5 in the length direction and the weather deck 2 at intervals, and both ends of the longitudinal beams 29 are respectively fixedly connected with the cable suspension point carrier beam 5 and the weather deck 2. A cover plate eye plate I13 is fixed on the outer side of the end part of the longitudinal frame 29, a cover plate eye plate II 14 is correspondingly fixed on the top parts of the cable hoisting point bearing beam 5 and the weather deck 2 respectively, and the cover plate eye plate I13 and the cover plate eye plate II 14 are fixedly connected through bolts 15, so that the longitudinal frame 29 is fixedly connected with the cable hoisting point bearing beam 5 and the longitudinal frame 29 is fixedly connected with the weather deck 2. The light cover plate 30 is placed between two adjacent longitudinal beams 29, the movable cover plate hanging ring 16 is arranged at the top of the light cover plate 30, and the light cover plate 30 is hoisted through the movable cover plate hanging ring 16.
The invention comprises a method for realizing deployment and recovery of seismic cables by using the device, which comprises the following steps:
firstly, an A-shaped frame seismic cable laying and recycling device is installed.
And operating the A-shaped frame, and lodging the A-shaped frame outwards to the position near a deck strut at the tail part of the ship, and reserving installation positions of the cable hoisting point bearing mechanism and the movable type walking bridge mechanism. The movable type step bridge 9, the cable lifting point carrier beam 5 and the movable type wind and rain shielding mechanism 7 are sequentially arranged from the lower layer to the upper layer by utilizing the vessel standing crane, so that the movable step bridge 9 is fixedly connected with the seismic cable deck 3, and the cable lifting point carrier beam 5 is fixedly connected with the weather deck 2.
First, the mobile bridge 9 is installed. The guardrail 10 and the guardrail steel wire rope 18 are installed on the movable type foot bridge 9, the movable type foot bridge 9 is hoisted to the seismic cable deck track 11 by utilizing a crane equipped on a ship, the end part of the movable type foot bridge is aligned with the limiting plate 12, and then the movable type foot bridge 9 is fixed on the seismic cable deck 3 through the foot bridge eye plate 23 and the bolt 24.
Next, the cable suspension point carrier beam 5 is installed. The seismic cable hoisting point 6 is fixed at the lower part of the cable hoisting point carrier beam 5, and the installation position of the seismic cable hoisting point can be selected according to the operation mode. During single-cable operation, the seismic cable hoisting point is arranged at the central position of the cable hoisting point carrier beam, and during double-cable operation, the seismic cable hoisting point is arranged at the hanging point positions at two sides. The cable hoisting point carrier beam 5 is hoisted to the weather deck track 8 by using a crane equipped in a ship, the end part of the cable hoisting point carrier beam is aligned with the limiting device 12, and then the cable hoisting point carrier beam 5 is fixedly connected with the weather deck 2 through the beam eye plate I20, the beam eye plate II 21 and the beam bolt 22.
Finally, the movable weather shield mechanism 7 is installed. A light movable cover plate 30 is sequentially placed among the longitudinal frame 29, the cable lifting point bearing beam 5 and the weather deck 2 by using a crane equipped for a ship, and two ends of the longitudinal frame 29 are respectively fixedly connected with the cable lifting point bearing beam 5 and the weather deck 2 by using a cover plate eye plate I13, a cover plate eye plate II 14 and a bolt 15 to form a movable wind and rain shielding mechanism 7.
In a second step, the mobile bridge is moved to the first work area 25, where the bridge is used to mount the seismic cable.
The movable type walking bridge 9 with the rollers is pushed to a first operation area under a bearing beam of a cable lifting point to be fixed, an operator hangs a safety hook lock, the seismic cable passes through the cable lifting point 6 to be hung and is continuously released to an air gun deck, and after tail mark equipment is installed on the seismic cable, the seismic cable is launched.
Third, the mobile bridge is moved to the second work area 26 where the attachments such as water birds are installed using the bridge.
And pushing the movable type walking bridge 9 with the rollers to a second operation area behind the cable lifting point to be fixed, starting a cable winch to release the seismic cable, and installing a cable accessory behind the lifting point by an operator.
And fourthly, operating and recovering the seismic cable.
And after the seismic cable is laid, evacuating the operators, returning the operators to the second operation area after the seismic cable investigation operation is finished, and recovering the cable while disassembling the seismic cable accessories until all the cables are recovered.
And fifthly, after the operation is finished, if the A-shaped frame operation is carried out, the movable wind and rain shielding mechanism 7, the cable hoisting point bearing beam 5, the movable walking bridge 9 and the like are sequentially dismounted from the upper layer to the lower layer, and the mechanisms are placed in the open deck storage place.
The device and the method for laying and recovering the seismic cable of the geophysical prospecting ship with the A-type frame are described in detail above. The principles and embodiments of the present invention are explained herein using specific examples, which are presented only to assist in understanding the method and its core concepts. It should be noted that, for those skilled in the art, it is possible to make various improvements and modifications to the present invention without departing from the principle of the present invention, and those improvements and modifications also fall within the scope of the claims of the present invention. The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (8)
1. The utility model provides a take A type frame geophysical prospecting ship seismic cable to lay recovery unit which characterized in that: the earthquake-resistant construction system comprises a cable hoisting point bearing mechanism, a movable type step bridge mechanism and a movable type wind and rain shielding mechanism (7), wherein the cable hoisting point bearing mechanism and the movable type wind and rain shielding mechanism are arranged on an open deck (2), the movable type step bridge mechanism is arranged on an earthquake cable deck (3), and the cable hoisting point bearing mechanism and the movable type wind and rain shielding mechanism are positioned above the movable type step bridge mechanism;
The cable hoisting point bearing mechanism comprises a cable hoisting point bearing beam (5) and an open deck track (8), the open deck track (8) is arranged on two side edges of an opening of an open deck (2) along the length direction of the material ship respectively, the open deck track (8) is fixedly connected with the inner wall of the opening of the open deck (2), two ends of the cable hoisting point bearing beam (5) are respectively positioned on the open deck track (8), the cable hoisting point bearing beam (5) slides along the open deck track (8), the cable hoisting point bearing beam (5) is fixedly connected with the open deck (2) through a connecting mechanism, a limiting plate (12) is fixed at one end, facing the A-shaped frame, of the open deck track (8), a plurality of cable hoisting points (6) are fixed at the bottom of the cable hoisting point bearing beam (5), and a seismic cable (28) is wound on the cable hoisting point (6);
the mobile bridge mechanism comprises a mobile bridge (9) and a seismic cable deck track (11), seismic cable deck tracks (11) are respectively arranged on two side edges of an opening of a seismic cable deck along the length direction of the material ship, the seismic cable deck tracks (11) are fixedly connected with the inner wall of the opening of the seismic cable deck (2), a limiting plate (12) is fixed at one end of each seismic cable deck track (11) facing the A-shaped frame, a step bridge roller (19) is arranged at the bottom of the movable step bridge (9), the step bridge roller (19) is positioned on the seismic cable deck tracks (11), the movable walking bridge (9) is fixedly connected with the seismic cable deck through a connecting mechanism, guardrails (10) are arranged on the upper edge of the movable walking bridge (9) along the edges of the walking bridge, and a guardrail steel wire rope (18) is connected between the guardrails (10);
The movable wind and rain shielding mechanism (7) comprises a light cover plate (30) and longitudinal ribs (29), a plurality of longitudinal ribs (29) are arranged at intervals between the side edge of the cable hoisting point bearing beam (5) in the length direction and the weather deck (2), and two ends of each longitudinal rib (29) are fixedly connected with the cable hoisting point bearing beam (5) and the weather deck (2) respectively.
2. The geophysical prospecting ship seismic cable laying and recovering device with the A-type frame as claimed in claim 1, wherein: the cable lifting point carrier beam (5) is of a double-I-shaped steel structure, and a plurality of cross beam lifting rings (17) are arranged at the top of the cable lifting point carrier beam (5).
3. The geophysical prospecting ship seismic cable laying and recovering device with the A-type frame as claimed in claim 1, wherein: connecting mechanism between cable hoisting point carrier bar (5) and weather deck (2) includes crossbeam eye board I (20), crossbeam eye board II (21), crossbeam bolt (22), and cable hoisting point carrier bar (5) are fixed with crossbeam eye board I (20) towards the tip of weather deck (2), and the upper surface that corresponds in weather deck (2) is fixed with crossbeam eye board II (21), passes through crossbeam bolt (22) fixed connection between crossbeam eye board I (20) and crossbeam eye board II (21).
4. The geophysical prospecting ship seismic cable laying and recovering device with the A-type frame as claimed in claim 1, wherein: connecting mechanism between portable walking bridge and the seismic cable deck includes walking bridge eye plate (23), rotatable eye plate (27) and walking bridge bolt (24), and portable walking bridge is fixed with walking bridge eye plate (23) towards the tip outside of seismic cable deck, is equipped with rotatable eye plate (27) on corresponding seismic cable deck (3), passes through walking bridge bolt (24) fixed connection between walking bridge eye plate (23) and the rotatable eye plate (27).
5. The geophysical prospecting ship seismic cable laying and recovering device with the A-type frame as claimed in claim 1, wherein: the cable suspension device is characterized in that a cover plate eye plate I (13) is fixed on the outer side of the end part of each longitudinal frame (29), cover plate eye plates II (14) are correspondingly fixed on the top parts of the cable suspension point bearing beam (5) and the weather deck (2) respectively, the cover plate eye plates I (13) and the cover plate eye plates II (14) are fixedly connected through bolts (15), a light cover plate (30) is placed between every two adjacent longitudinal frames (29), and a movable cover plate hanging ring (16) is arranged on the top part of the light cover plate (30).
6. A method for deploying and retrieving a seismic cable using the apparatus of any one of claims 1 to 5, comprising the steps of:
s1, installing an A-shaped frame seismic cable laying and recycling device:
operating the A-shaped frame, lodging the A-shaped frame outwards to the position near a deck strut at the tail part of the ship, reserving installation positions of a cable hoisting point bearing mechanism and a movable type step bridge mechanism, and installing the A-shaped frame through the following steps:
s1.1, installing a movable type step bridge:
installing a guardrail and a guardrail steel wire rope on a movable type walking bridge, hoisting the movable type walking bridge to a track of a seismic cable deck to enable the end part of the movable type walking bridge to be aligned with a limiting plate, and fixing the movable type walking bridge on the seismic cable deck through a walking bridge eye plate and a bolt;
S1.2, installing a cable hoisting point carrier beam:
fixing a seismic cable hoisting point at the lower part of a cable hoisting point carrier beam, hoisting the cable hoisting point carrier beam to an open deck track to enable the end part of the cable hoisting point carrier beam to be aligned with a limiting device, and then fixedly connecting the cable hoisting point carrier beam with the open deck through a beam eye plate I, a beam eye plate II and a beam bolt;
s1.3, installing a movable wind and rain shielding mechanism:
the light movable cover plate is sequentially placed among the longitudinal frame, the cable lifting point bearing beam and the weather deck, and the two ends of the longitudinal frame are fixedly connected with the cable lifting point bearing beam and the weather deck respectively by utilizing the cover plate eye plate I, the cover plate eye plate II and the bolt to form a movable wind and rain shielding mechanism;
s2, moving the movable type step bridge to a first operation area, and mounting the seismic cable in the first operation area by using the step bridge:
the movable type walking bridge with the rollers is pushed to a first operation area under a cable lifting point bearing beam to be fixed, and an operator hangs a safety hook lock and passes a seismic cable through the cable lifting point to be hung;
s3, moving the movable type step bridge to a second operation area, and installing accessories such as water birds and the like in the second operation area by utilizing the step bridge:
pushing the movable type walking bridge with the rollers to a second operation area behind a cable lifting point to be fixed, starting a cable winch to release the seismic cable, and installing a cable accessory behind the lifting point by an operator;
S4, operation and recovery of the seismic cable:
and after the seismic cable is laid, evacuating the operators, returning the operators to the second operation area after the seismic cable investigation operation is finished, and recovering the cable while disassembling the seismic cable accessories until all the cables are recovered.
7. The method of claim 6, wherein: the installation position of the seismic cable hoisting point is selected according to the operation mode: during single-cable operation, the seismic cable hoisting point is arranged at the central position of the cable hoisting point carrier beam, and during double-cable operation, the seismic cable hoisting point is arranged at the hanging point positions at two sides.
8. The method of claim 6, wherein: after the operation is finished, if the A-shaped frame operation is carried out, the movable wind and rain shielding mechanism, the cable hoisting point bearing beam and the movable walking bridge are sequentially dismounted from the upper layer to the lower layer and are placed in the open deck storage position.
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| CN202010595271.1A CN111847136B (en) | 2020-06-28 | 2020-06-28 | Device and method for laying and recovering seismic cable of geophysical prospecting ship with A-shaped frame |
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| CN202010595271.1A CN111847136B (en) | 2020-06-28 | 2020-06-28 | Device and method for laying and recovering seismic cable of geophysical prospecting ship with A-shaped frame |
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