274 results about "Umbilical cable" patented technology

The invention discloses an umbilical cable for a lunar penetrator and a coiling installation method of the umbilical cable, and relates to the technical field of lunar penetrators. The umbilical cable main body comprises an armor tube, an umbilical cable insulating sheath and an umbilical cable metal shielding layer, a Kevlar rope and a cable are arranged in the umbilical cable metal shielding layer, and the length of the Kevlar rope is smaller than that of the cable. When the umbilical cable main body is mounted in a coiled manner, the umbilical cable main body extending out of the penetration stage forms an inverted S-shaped back-bending section outside the joint of the penetration stage and the power stage; and meanwhile, the umbilical cable main body is also subjected to wave-shaped wire coiling on the outer wall of the power stage, and is mounted on the power stage through a fixing assembly. The invention provides an umbilical cable for a lunar penetrator and a coiling installation method of the umbilical cable, which can ensure that the umbilical cable is not damaged in a penetration process so as to carry out effective data transmission.

The invention discloses an umbilical cable anomaly detection method, and the method comprises the steps: constructing an image data set containing winding, damage and bending, employing a target detection model (including WTConv convolution, a double-domain selection mechanism and a mixed expansion residual attention module) based on deep learning, and combining fine-grained distribution refinement and a global optimal positioning self-distillation algorithm to optimize a prediction result. After the model is trained, the abnormity of the umbilical cable can be detected in real time, online learning is supported, the detection precision is improved, the method is suitable for monitoring the cable state of the underwater robot, and the operation safety and efficiency are remarkably improved.

The invention discloses a dynamic encryption transmission method and system for sound-light alarm signals, and relates to the field of data encryption, and the method comprises the steps: obtaining a dynamic environment entropy value; generating a pseudo-random chaotic sequence; obtaining a helium-oxygen mixed gas density parameter in the dynamic environment entropy value; segmenting a preset standard alarm waveform into a plurality of signal waveforms in a time domain, and generating a distorted signal waveform according to the helium-oxygen mixed gas density parameter; performing encryption modulation on the distorted signal waveform to generate an encrypted distorted signal waveform; determining a sending sequence and a sending interval of the encrypted distortion signal waveform by combining a pseudo-random chaos sequence based on an impedance fluctuation value and background acoustic spectrum characteristics in the dynamic environment entropy; generating a dynamic modulation signal based on the transmission sequence and the transmission interval; the dynamic modulation signal is sent to a water surface console through an umbilical cable; and receiving the guide pulse, performing phase conjugation processing on the guide pulse, generating an echo verification signal, and transmitting the echo verification signal back to the water surface console.

The invention relates to an underwater special operation robot and a butt joint method thereof.The underwater special operation robot body comprises a main buoyancy shell, a body main support, an umbilical cable, a power propelling system, a combined navigation system, a lamplight camera system, a capturing and locking device and a wet plugging device; the power propulsion system is used for driving the underwater special operation robot body to move; the combined navigation system is used for accurately positioning and navigating the underwater special operation robot; the light camera system is used for identifying and extracting an unmanned underwater vehicle AUV end docking device; the capturing and locking device is used for being connected with an unmanned underwater vehicle (AUV) end docking device in a locking mode. After the underwater special operation robot is in butt joint with the unmanned underwater vehicle AUV, energy supply and information transmission are completed, so that the unmanned underwater vehicle AUV can continuously perform underwater operation, low operation efficiency caused by frequent floating is avoided, and meanwhile, the safety risk possibly occurring in the process of recycling the unmanned underwater vehicle AUV is also reduced.

The invention discloses a marine pipe cable damping device which comprises a double-layer pipe body, a damping device and a damping device, and the double-layer pipe body is arranged outside a marine pipe cable in a sleeving mode and fixed to the marine pipe cable through a buckling device; the double-layer pipe body comprises an outer-layer pipe and an inner-layer pipe which are coaxially arranged, an interlayer space is arranged between the outer-layer pipe and the inner-layer pipe, a drainage hole communicated with the interlayer space is formed in the outer-layer pipe, an inflation buoyancy module is arranged in the interlayer space, a vibration power generation device is fixed to the outer-layer pipe, and a water pressure sensor is installed on the outer surface of the vibration power generation device; a controller is arranged on the outer surface of the outer-layer pipe, and the vibration power generation device is electrically connected with the controller; the water pressure sensor is electrically connected with the controller, and the controller is electrically connected with the inflatable buoyancy module; and a plurality of vibration reduction fins are irregularly distributed and fixed on the outer surface of the outer-layer pipe. The marine flexible pipe cable can achieve efficient vibration reduction and buoyancy adjustment, and then the stability, durability and safety of the marine flexible pipe cable in a complex dynamic environment are improved.

The invention discloses an underwater blowout preventer myriameter photoelectric composite cable lowering and recycling system which comprises an integrated frame, a cable storage winch is connected to one side of the bottom of the integrated frame, a cable arrangement device is further connected to the bottom of the integrated frame, the cable arrangement device is arranged close to the cable storage winch, and a second guide pulley and a compensator are further connected to the bottom of the integrated frame. The middle of the integrated frame is connected with a traction winch, one side of the traction winch is connected with a first guide pulley, the cable storage winch is connected with an umbilical cable, and the umbilical cable sequentially penetrates through the cable arrangement device, the second guide pulley, the compensator, the first guide pulley and the traction winch. Double-closed-loop control is adopted, the problems that distance cable arrangement dislocation is caused by accumulative errors of PLC control synchronous cable arrangement and umbilical cables and underwater blowout preventers cannot be normally recycled and put down due to faults of a single sensor are solved, self-adaptive cable arrangement and real-time correction are conducted in a mechanical mode, accurate cable arrangement is achieved, and the working efficiency is improved. Compared with an angle sensor, the structure is simple and no accumulative error exists.

The invention relates to the technical field of ship offset early warning, and provides a ship offset early warning method for a deep-sea mining in-situ pilot production system, which can solve the problem that the existing mother ship offset monitoring mode is too simple, improve the accuracy of judging the position of a ship body and perform effective early warning. Comprising the following steps: S100, establishing an information transmission network and carrying out data acquisition; s200, carrying out coordinate conversion on the collected real-time longitude and latitude information of the ship and the vehicle, and calculating a relative distance between the ship and the vehicle; s300, calculating a ship offset area of the mining system, calculating an allowable offset of a mining ship relative to a mining vehicle, dividing operation states according to the offset, and determining a reasonable ship offset area map; and S400, the ship deviation safety early warning area is built in a system early warning program, monitoring data are read at regular time, monitoring information such as environment monitoring information, ship-vehicle distance and the like and umbilical cable length monitoring information are read in real time, and the ship deviation state is judged in real time according to the ship deviation safety area.

The utility model belongs to the technical field of cables, and particularly relates to a dynamic composite cable for deep sea operation of a diving robot. The cable comprises a central filling member, a composite cable core and a protective layer which are arranged from inside to outside. The composite cable core is arranged on the outer side of the center filling piece and comprises a plurality of power cable cores, auxiliary cable cores and winding wires which are sequentially arranged from inside to outside, the power cable cores are arranged around the center filling piece in the circumferential direction, and gaps between the power cable cores and the protective layer are filled with the auxiliary cable cores in the circumferential direction at intervals; gaps among the power cable core, the auxiliary cable core and the protective layer are filled with winding wires in the circumferential direction at intervals, and the outer side of the winding wires is coated with a semi-conductive layer; the protective layer comprises an armored shielding layer in contact with the semi-conductive layer and an outer sheath layer arranged on the outer side of the armored shielding layer. The utility model is used for solving the problem that the existing umbilical cable is poor in tensile and compression resistance.

The invention relates to the technical field of deepwater umbilical cable temperature monitoring, and provides a deepwater umbilical cable temperature monitoring data processing method and system, which not only can accurately monitor the temperature change of an umbilical cable in real time, but also can improve the accuracy and reliability of the monitoring data and ensure the safe operation of the deepwater umbilical cable in a complex marine environment. Comprising a temperature monitoring host, a data processing unit and an umbilical cable, an optical fiber sensor is arranged in the umbilical cable, and the temperature monitoring host communicates with the optical fiber sensor; the temperature monitoring host comprises a data acquisition unit and a demodulator, the data acquisition unit is used for converting weak light signals transmitted by the optical fiber sensor into electric signals, and the demodulator is used for accurately demodulating temperature information from the electric signals transmitted by the data acquisition unit; the data processing unit is used for receiving the temperature information transmitted by the demodulator and carrying out data processing, and the temperature monitoring host is used for displaying the data information processed by the data processing unit.

The invention provides a deepwater semi-submersible drilling platform pressure control drilling MPD control system which comprises a platform rotary table face. A platform wellhead flow divider, a marine riser expansion joint, a marine riser tension ring, a marine riser rotation control pup joint, an MPD hydraulic control pup joint, an MPD marine riser annulus sealing device, a marine riser four-way joint, a drilling marine riser, an underwater blowout preventer set and a seabed underwater wellhead are sequentially connected to the platform rotary table face from top to bottom. The MPD hydraulic control pup joint is connected with a rotary control pup joint power unit through an umbilical cable I, an umbilical cable roller frame I and a cable hose, and the rotary control pup joint power unit is connected with a deepwater MPD electro-hydraulic control system main control station; the MPD marine riser annulus sealing device is connected with the annulus sealing device and the buffer manifold hydraulic power unit through an umbilical cable II, an umbilical cable roller frame II and a cable hose and is connected with the deepwater MPD electro-hydraulic control system master control station; the throttling hydraulic power unit is connected with the deepwater MPD electro-hydraulic control system master control station. According to the system, pressure regulation and control, equipment management and operation safety guarantee in the deepwater pressure-controlled drilling well are realized.

The invention discloses a cooperative control simulation system for an underwater robot and an umbilical cable system, belongs to the technical field of ocean engineering simulation and automatic control, and is used for analyzing system dynamic characteristics in the research and development stage of deep sea operation equipment. Comprising an environment initialization and marine environment construction module, a mother ship model construction module, an underwater robot and umbilical cable coupling module, an instruction generation module, a man-machine interaction control module and a data acquisition and storage module. According to the method, an external interference source with physical authenticity is provided for a control algorithm by combining an energy density function and simulating a composite environment modeling method of a sea level height field and an LOD dynamic grid, and a distributed model prediction control algorithm for uniformly optimizing underwater robot trajectory tracking and umbilical cable tension safety maintenance is constructed; data such as the motion state of the underwater robot and the tension of the umbilical cable can be output in real time, algorithm performance testing is completed in a virtual environment, and dependence on high-cost sea testing is not needed.

The invention provides a sea cucumber culture fishing underwater robot cooperative work system, and the system comprises a fishing boat module which is used as a water surface control center and provides calculation, communication and power support; the plurality of underwater robot modules are used for executing underwater autonomous navigation, target identification, sea cucumber fishing and data acquisition tasks; the umbilical cable collecting and releasing system module is used for collecting, releasing and managing an umbilical cable for connecting the fishing boat and the underwater robot; a cooperative control system module; a balance adjustment system module; according to the invention, through unified task allocation and dynamic path planning of a plurality of underwater robots, by using an improved A * algorithm and a UWB positioning technology, the plurality of robots can efficiently cover an operation area without omission, and the distance is calculated in real time to trigger an obstacle avoidance program, so that the obstacle avoidance efficiency is improved. The problems of low efficiency, repeated fishing, region omission, high collision risk and the like caused by a traditional manual region division or simple wireless communication cooperation mode are solved.

The invention discloses an anchor chain cleaning and detecting device and an operation method thereof, the anchor chain cleaning and detecting device comprises an overwater system and an underwater system, and the overwater system and the underwater system are connected through an umbilical cable; the underwater system comprises an underwater frame structure, the underwater frame structure comprises an upper connecting assembly and a lower connecting assembly which are connected through a linear driving device, the upper connecting assembly is provided with an upper detection system and an electronic control cabin, and the lower connecting assembly is provided with a high-pressure cleaning device, a lower detection system and a wiring cabin; the upper connecting assembly and the lower connecting assembly are each provided with a clamping mechanism. In the anchor chain detecting and cleaning process, the upper connecting assembly, the linear driving device, the lower connecting assembly and the clamping mechanism form a self-positioning and chain climbing executing mechanism, the self-adaptability is achieved, the robot can adapt to anchor chains of different diameters and materials, the cleaning function is provided while detection is conducted, and the cleaning efficiency is improved. Through the multifunctional integrated design, the operation efficiency is remarkably improved, and the investment of manpower and mechanical equipment is reduced.

The invention discloses a seabed shallow casing section thermal insulation structure for polar region supercritical carbon dioxide drilling, which comprises a casing, a thermal insulation coating, a protective coating, an annular cement slurry layer, an electric heating pipe, a sensor module, a wireless conductive module, a ground system and a seabed wireless transmission module, and is characterized in that the electric heating pipe is fixed on the outer wall of the casing through a hoop; the outer wall of the casing pipe is sequentially coated with a heat preservation coating, a protective coating and an annular cement paste layer from inside to outside, the wireless conductive module is integrated at the end of the casing pipe, and the ground system comprises a ground data acquisition system and a ground control center. The sea surface platform is provided with a ground data acquisition system and a ground control center which are connected with the seabed wireless transmission module through an umbilical cable, and temperature and pressure data acquired by the sensor module are uploaded to the ground control center. According to the invention, the problems of rapid heat loss, annular air channeling, casing mechanical property degradation, poor drilling fluid fluidity and the like of the seabed shallow casing section in the polar region extreme low-temperature environment are solved.

The utility model discloses a water surface and underwater integrated robot detection suite which comprises a water surface unmanned ship assembly and an underwater robot assembly. Two electric control bins, a network bridge, a wireless data radio and a satellite compass are arranged on the upper portion of the rear end of a hull frame of the water surface unmanned ship assembly, two propellers are installed at the bottom of the rear end, three ultrasonic transducers are triangularly arranged on the plane of the bottom, an underwater robot winding and unwinding mechanism comprising a cage is arranged in the middle of the hull frame, and an umbilical cable winding and unwinding mechanism and a ball machine are arranged at the front end of the hull frame. A take-up turntable and a pay-off roller are arranged in the umbilical cable take-up and pay-off mechanism and connected with the zero-buoyancy umbilical cable; an ultrasonic transducer and a relative positioning box are fixed to the top of a frame of the underwater robot assembly, and eight propellers are installed in the underwater robot assembly. The water surface unmanned ship assembly and the underwater robot assembly are connected through a zero-buoyancy umbilical cable, and communication, power transmission and collaborative operation are achieved. The detection suite is low in operation difficulty, can effectively improve the inspection accuracy, is suitable for various water area environments, and efficiently completes the detection operation.

The invention provides a time-space structured sparse optical coding deepwater heterogeneous network data synchronization method and system, and the method comprises the steps: carrying out the sparse decomposition of the time sequence clock deviation data of each current underwater node at a transmitting end device of a deepwater heterogeneous network based on a trained over-complete dictionary, and obtaining an original sparse vector; converting the dynamic compression observation data corresponding to the original sparse vector into an optical signal, and transmitting the optical signal to a receiving end device of the deepwater heterogeneous network by a transmitting end device through an umbilical cable; demodulating the optical signal into an observation vector through receiving end equipment, inputting the observation vector into the trained deep expansion network model, and outputting a reconstructed sparse vector by the deep expansion network model; and recovering the reconstructed sparse vector into a clock skew signal through the over-complete dictionary, and generating a clock synchronization calibration instruction to realize data synchronization of the corresponding underwater node. According to the invention, the problems of high bandwidth occupation, low signal ratio and poor reconstruction time efficiency existing in the underwater network time synchronization technology can be solved.

The invention discloses a deep sea underwater equipment alternating current power supply system and a simulation method based on Matlab / Simulink, and the method comprises the steps: carrying out the modeling of each important part of the deep sea underwater equipment alternating current power supply system, and building a whole power supply system simulation model according to the simulation parameters of the system; a mother ship power supply emits preset alternating current, and the voltage is boosted to a target voltage value through a boosting device; electric energy is transmitted through an umbilical cable, one path supplies power to the underwater high-voltage motor, and the other path is reduced to a preset voltage value through a step-down transformer; the alternating current with the preset voltage value is converted into direct current with the preset voltage value through rectification of a rectifier; by collecting simulation waveforms of key parts of a power generation side, a high-voltage side, a motor side and a direct-current low-voltage side in a power supply system, the running condition of the whole power supply system and the reasonability of the design of the power supply system are judged, parameters of power supply equipment are changed in real time, the parameters are optimized through the simulation waveforms, and simulation of the power supply system is completed.

The invention provides a deep-sea mining umbilical cable truncation model experiment device and method.The deep-sea mining umbilical cable truncation model experiment device is characterized in that motion control equipment is installed on the upper portion of a water tank, and the two ends of an umbilical cable model are fixedly connected with the motion control equipment and base position adjusting equipment in a one-to-one correspondence mode through hydrodynamic monitoring equipment; the configuration optical monitoring device is installed on the base position adjusting device, and the umbilical cable model is located in an ocean engineering pool. The motion control device is used for driving one end of the umbilical cable model to move. The hydrodynamic monitoring device is used for measuring the top tension and the bottom tension of the umbilical cable model. And optical monitoring equipment is configured to detect the overall displacement of the umbilical cable model. The base position adjusting device is used for adjusting the horizontal distance between the bottom end and the upper end of the umbilical cable model. The acquisition of the overall displacement and top and bottom tension of the umbilical cable model is facilitated, and data support is provided for deep-sea mining.

The invention relates to the technical field of ocean information, and discloses a digital test system and method for an underwater power source, and the system comprises an umbilical cable unit which is used for connecting a variable-frequency power supply and a motor; the generator is connected to the output end of the hydraulic system; the control platform is used for acquiring real-time data related to the underwater power source and simulating the overall system performance of the power source system under a constant load working condition and a load sudden change working condition; the method is also used for determining the adjustment mode of the umbilical cable unit in the simulation process. According to the invention, the overall system performance of the underwater power source under the load sudden change working condition can be tested and verified.

The invention relates to the field of ocean engineering equipment, in particular to an anti-turbulent-flow umbilical cable and a preparation method thereof.Multiple sets of shield scale anti-drag structure units are formed on the outer peripheral face of an umbilical cable body and are regularly arranged along the outer peripheral face of the umbilical cable body; a fish scale bionic structure or a fin-shaped bionic structure is formed to cope with a turbulent flow environment in water, the fluid resistance in the turbulent flow environment is effectively reduced, the impact of hydrodynamic disturbance on the umbilical cable body in a dragging or static state is reduced, and the problems of shaking, vibration and deformation caused by large hydrodynamic disturbance are avoided. The umbilical cable is round in appearance and uniform and consistent in outer diameter, the problem that in the prior art, protruding parts of flow deflectors and woven capillary fibers are prone to clamping stagnation or winding or abrasion in the winch cable arrangement process is solved, efficient and smooth winch cable arrangement operation is achieved, the equipment operation complexity and maintenance frequency are reduced, and the working efficiency is improved. And the stability and the service life of the umbilical cable in long-term operation are greatly improved.

The utility model discloses a robot. The robot comprises a supporting part, a communication part, a power connection part and a body. Supporting frames are arranged at the upper ends of the supporting parts. The communication unit includes a floating device and a communication device. The floating device is supported by the supporting frame and floats on the water body under the condition that the floating device makes contact with the water body. The communication device is arranged in the floating device. The power connecting part comprises a driving device, a cable winding and unwinding device and a connecting cable. The driving device is fixed to the supporting part. The cable take-up and pay-off device is driven by a driving device to pay off or take up a cable. The connecting cable is wound around the cable take-up and pay-off device, and one end is connected to the floating device. The body comprises a base plate, a first positioning device and a walking device. The lower end of the supporting part is fixed to the upper surface of the substrate. The first positioning device is fixed on the upper surface of the substrate and is used for monitoring and transmitting a first positioning signal; the walking devices are arranged on the two opposite sides of the base plate. The robot transmits communication signals through the communication device, an umbilical cable is prevented from being used for transmitting the communication signals, and the detection range of the robot is enlarged.

The invention discloses a submarine sediment in-situ low-frequency acoustic measurement system and method. The in-situ low-frequency acoustic measurement system for the seabed sediment comprises a mother ship, a control center, an umbilical cable, a low-frequency sound source transmitting host, a drill rod and a self-contained acoustic receiver, when the low-frequency sound source emission host controls the drill rod to drill into a target detection stratum, the self-contained acoustic receiver is put into the drill rod, after the drill rod clamps the self-contained acoustic receiver, the self-contained acoustic receiver is pressed into the target detection stratum, and the drill rod is used for drilling seabed sediments; the low-frequency sound source transmitting host is used for transmitting sound wave signals with different frequencies, and the self-contained acoustic receiver processes and converts the received sound wave signals with different frequencies into data and stores the data; the control center reads data measured by the self-contained acoustic receiver and analyzes the data to obtain sound velocity and sound attenuation of the seabed sediment at different frequencies. According to the invention, the accuracy of ocean sediment acoustic measurement can be improved, and the frequency range of ocean sediment acoustic measurement is increased.

1. The name of the design product: submarine cable bending limiter. 2. The use of the design product: for the bending protection of submarine cable, deep sea umbilical cable, offshore oil pipeline. 3. The design points of the design product: in shape. 4. The picture or photo that can best show the design points: perspective view.

The invention discloses a corrosion-resistant tensile umbilical cable for an oil exploration platform, and belongs to the technical field of offshore oil exploration equipment, and the corrosion-resistant tensile umbilical cable for the oil exploration platform comprises an outer sheath, an inner protection layer, an enhancement layer, a waterproof layer and a cable core from outside to inside in sequence; wherein the cable core is formed by integrating a plurality of functional units; the waterproof layer is arranged between the cable core and the enhancement layer; the water-blocking layer is formed by superposing an expansion type water-blocking tape and an aluminum-plastic composite film; the enhancement layer is arranged between the sheath and the waterproof layer; the reinforcing layer is formed by spirally winding stainless steel wires and aramid fibers; spirally wound gaps are filled with a silane coupling agent modified nitrile rubber adhesive; the inner protection layer is formed by coating graphene / temperature-sensitive microcapsule self-repairing epoxy resin on the surface of the enhancement layer; and the outer sheath is formed by extrusion after fluororubber and thermoplastic polyurethane are blended.

The application discloses a seabed garbage cleaning device, which comprises a garbage grabbing robot, an auxiliary storage and transportation robot, a garbage storage and transportation auxiliary ship, a signal cable and an umbilical cable; the auxiliary storage and transportation robot is connected with the garbage grabbing robot through the umbilical cable, forms a negative pressure, sucks the grabbed garbage from the garbage grabbing robot into the auxiliary storage and transportation robot, and then transfers the garbage into the garbage storage and transportation auxiliary ship; the garbage grabbing robot is connected with the garbage storage and transportation auxiliary ship through the signal cable; the garbage grabbing robot comprises an upper cavity, a lower cavity, a cavity mechanical claw and a robot propulsion system; the upper cavity and the lower cavity enclose a negative pressure cavity; the lower cavity is provided with the cavity mechanical claw and the robot propulsion system. The application further discloses a seabed garbage cleaning system which comprises the seabed garbage cleaning device and a controller. The application further discloses a seabed garbage cleaning method. The application can collect garbage in a way that can avoid stirring seabed silt as much as possible and reduce the influence of the collecting process on seabed organisms.

The invention discloses a one-time laying system for a wave glider and a collaborative operation method of the one-time laying system, and belongs to the technical field of ocean engineering. The system comprises a wave glider and a transferring and laying device. The moving, transporting and laying device is a detachable separation support, and an upper laying support and a lower moving support are connected through a positioning pin. The laying support is provided with a bearing face matched with the ship body, four hanging rings, a supporting rod for supporting the traction machine and a floating body arranged on the middle rear portion. The method comprises the steps that the device is moved to a deck to be locked; the positioning pins are taken down, and the whole support and the glider are vertically hoisted and laid through the four slings; when the glider is immersed in water, the bracket inclines forward by using the floating body, and the glider is automatically separated; and the mother ship leaves and recycles the laying bracket. Rapid, stable and safe one-time laying of the wave glider under the complex sea condition is achieved, the risk of graded laying and umbilical cable winding are avoided, and the operation efficiency and safety are remarkably improved.

The invention discloses a radial well cluster mining system and method for deep sea natural gas hydrate and shallow gas. The small and medium-sized workboat is sequentially connected and fixed with the seabed drilling machine and the multi-well guide suction anchor, and the small and medium-sized workboat controls the seabed drilling machine through an umbilical cable to complete drilling and arrangement of a vertical well and an inclined well of drilling and fixing integrated hydrate in the multi-well guide suction anchor; the vertical well and the inclined well are connected with a multi-pipe Christmas tree arranged on the multi-well guide suction anchor, and then the multi-pipe Christmas tree is connected with a mining and transportation pipeline through a seabed supercharging electric submersible pump to form a natural gas hydrate one-machine multi-well type radial well cluster efficient mining and transportation path. According to the hydrate anchor base radial well cluster mining system, the mining range is greatly enlarged, the mining efficiency is improved, integrated drilling and one-machine multi-well arrangement are achieved through the seabed drilling machine, the operation cost is remarkably reduced, the drilling and mining efficiency is improved, and the integrated operation process of drilling, well cementation, well completion and mining of the deep sea hydrate reservoir is achieved.

The utility model relates to the technical field of winches, aims to solve the problem of how to improve the safety performance of an umbilical cable take-up and pay-off system, and provides an umbilical cable take-up and pay-off system which comprises a winch, a winding drum, a cable arrangement mechanism, a first pneumatic motor, a second pneumatic motor and an air source. The winding drum is arranged in the winch and used for winding the umbilical cable. The cable arranging mechanism is arranged on the winch and comprises a lead screw and a support, and the support is arranged on the lead screw. The first pneumatic motor is in transmission connection with the drum and used for driving the drum to rotate forwards or backwards. The second pneumatic motor is in transmission connection with the cable arrangement mechanism and used for driving the lead screw to reciprocate along the axis of the winding drum so that the support can drive the umbilical cables to be arranged on the winding drum. The air source is used for supplying air to the first pneumatic motor and the second pneumatic motor. The umbilical cable winding and unwinding system has the beneficial effects that due to the arrangement of the first pneumatic motor and the second pneumatic motor, the winding drum and the cable arrangement mechanism are driven in a pneumatic mode, the hidden danger of explosion prevention caused by electricity is avoided, and therefore the safety performance of the umbilical cable winding and unwinding system is improved.

The invention discloses a hanging type unmanned aerial vehicle hangar and a using method thereof.The hanging type unmanned aerial vehicle hangar comprises a movable bin and a hanging arm mechanism installed on the movable bin, a retractable umbilical cable is arranged on the hanging arm mechanism, a protective door is installed at the top of the movable bin, and a holding device used for clamping and positioning an unmanned aerial vehicle is installed in the movable bin and located below the protective door; a centering mechanism is installed in the holding device, the centering mechanism is matched with the unmanned aerial vehicle to guide the unmanned aerial vehicle to land into the holding device, a power supply unit and a control unit are further installed in the moving bin, the power supply unit is electrically connected with the control unit, and the control unit is electrically connected with the suspension arm mechanism, the umbilical cable and the holding device. And a docking mechanism connected with the unmanned aerial vehicle is mounted at the tail end of the umbilical cable. The unmanned aerial vehicle hangar can meet the requirement for detection in a deep well or a deep hole of an unmanned aerial vehicle, the unmanned aerial vehicle can smoothly enter the deep well or the deep hole for operation, and smooth recovery can be guaranteed.

The invention relates to an umbilical cable terminal, in particular to an underwater installation method for an oversized umbilical cable terminal, which comprises the following steps: S1, carrying out operation preparation for laying the tail end on a deck; s2, a crane hoists the umbilical cable terminal UTA out of a cabin; s3, enabling the umbilical cable terminal UTA to pass through a cone pulley; s4, hanging the umbilical cable terminal UTA in the moon pool; s5, the tail end of the umbilical cable terminal UTA is lowered in place; according to the method, the umbilical cable terminal UTA is transferred out of a cabin by connecting the crane with the bending limiting device out-of-cabin rigging, and then cone pulley passing operation is carried out under the cooperation of the crane and the pull-back winch; and the load is transferred to the winch from the crane, the winch is connected with the hump rigging on the bending limiting device through the sling reserved on the UTA fixing piece, and finally UTA in-place is completed under the cooperation of the crane, the winch and a ship navigation bridge. The whole construction team is coordinated and matched, most work is completed mechanically through the steps, the operation risk is reduced, and operation can be completed efficiently.