33 results about "Saturation diving" patented technology

The invention relates to a deep-sea high-pressure dry type maintenance device. The deep-sea high-pressure dry type maintenance device comprises a diving bell, and one end of the diving bell is in butt joint with a high-pressure dry type maintenance chamber in an airtight or watertight mode. The deep-sea high-pressure dry type maintenance device is reasonable in design and convenient to use; and by adoption of the modular structural design, the diving bell and the high-pressure dry type maintenance chamber can be connected and separated rapidly on a deck, and therefore the deep-sea high-pressure dry type maintenance device has the advantages of being easy to assemble and reliable in connection. By adoption of the deep-sea high-pressure dry type maintenance device, the integral hanging and recycling of the diving bell and the maintenance chamber is achieved, so that maintenance workers can keep staying in a high-pressure and dry environment in the whole maintenance process, a wet working environment is avoided, and the range of working objects is expanded; and meanwhile, the maintenance workers are provided with a safe and comfortable working space. By adoption of the deep-sea high-pressure dry type maintenance device, the requirement for saturation diving can be met, working time can be effective prolonged for the maintenance workers by providing high pressure gas in the diving bell and the maintenance chamber, so that long-time underwater working is achieved, working efficiency is improved, and the whole working period is shortened.

The invention provides an installation device for a saturated diving decompression chamber system, comprising an installation base, a thrust block, a card code, an epoxy resin layer and a pressure plate; the epoxy resin layer is arranged on the top surface of the installation base, The top surface of the epoxy resin layer is provided with a pressure plate, the thrust block includes a first thrust block and a second thrust block, the first thrust block and the second thrust block are arranged on the installation base, and the card code includes both Install the first card code and the second card code on the base, the first card code has a first limit part and a second limit part, the second card code has a third limit part and a fourth limit part, and the second card code has a third limit part and a fourth limit part. Both the second limiting part and the fourth limiting part are higher than the pressing plate. The invention can limit the horizontal and vertical displacement of the decompression chamber or transfer transition chamber, thereby ensuring that the saturation diving decompression chamber system can realize a small amount of displacement after installation, and can meet the installation accuracy of the saturation diving decompression chamber system, Reduce installation difficulty.

The invention relates to a domestic water supply system for a saturated submersible living cabin. The outlet of the tap water source communicates with one end of the tap water supply main pipe. The other end of the tap water supply main pipe is bifurcated to form a cold water inlet pipe and a hot water inlet pipe. The tap water flows through the cold water The section enters the water pipe and flows into the living cabin through the cold water pipeline, and the tap water flows through the hot water section entering the water pipe and flows into the living cabin after being heated by the hot water pipeline. In the present invention, domestic water from the same tap water source is supplied to the living cabin in an independent manner of hot and cold water, and a first pipeline and a second pipeline are arranged on the top of the pressure cold water cabin and the pressure hot water cabin, so that the pressure cold water cabin and the pressure The air pressure in the hot water tank is equivalent to the air pressure in the living room, and there is no need to use additional equipment to push the water body into the living room. At the same time, there are bends in the shape of "凵" on the temperature control pipeline of the hot water tank and the hot water pipeline The condensed water can collect in the "凵"-shaped bending part along the pipe wall, which is conducive to maintaining the humidity stability in the living cabin.

The invention relates to a domestic sewage discharge system for a large-depth saturated submersible living cabin. A sewage tank is arranged below the living cabin, and an electric control box controls the upper automatic on-off valve, the lower automatic on-off valve, the exchange pipeline automatic on-off valve, the intake valve and the air release. The valve is also equipped with a diving helium recovery system and a saturated diving gas source system. The invention sets up a saturated diving air source system to pressurize the sewage tank and the living cabin together, and the toilet cover and the upper electric switch valve are designed in linkage to avoid the risk of personal injury caused by misoperation under high pressure conditions. The gas recovery system is used to recycle the gas to reduce the loss of diving gas. The electrical control box provides stable and reliable valve body opening and closing control and liquid level monitoring to prevent harmful gas accumulation and dirt overflow. The air purification device can assist in the removal of excrement. Harmful and odorous gas, improve the air environment in the cabin.

An adjustment process for the coaxiality of a pipe clamp comprises the following steps: first, the pipe clamp is put into water after marking a first mark and a second mark on the pipe clamp; second, a tool for measuring a position of the pipe clamp is arranged on a pile leg of a jacket; third, a third mark and a fourth mark are marked on the pile leg of the jacket; fourth, the position of the pipe clamp is adjusted to make the pipe clamp be folded on the pile leg of the jacket, thus the second mark and the first mark on the pipe clamp are respectively corresponding to the third mark and the fourth mark; fifth, the position of the adjusted pipe clamp is verified. After each pipe clamp is arranged, the invention directly adjusts the position of the pipe clamp to get a design value, to independently adjust the coaxiality on each pipe clamp; and finally, all the pipe clamps can reach the coaxiality. The invention needs no divers to arrange the pipe clamps and adjust the coaxiality by diving to the positions of the pipe clamps with different water depths for twice, thus, the working efficiency is improved and the cost is reduced; meanwhile, as a saturation diving operation and an air diving operation can be independently implemented, the operation modes are flexible.

The invention discloses a method for installing a side connection type high-pressure escape cabin in a lifeboat, and relates to the technical field of saturated diving safety lifesaving. A high-pressure escape cabin is installed in the lifeboat in a side connection mode, and the method comprises the steps that a boat body side butt joint connector flange and an escape cabin tool are manufactured,and a boat bottom structure of the lifeboat is manufactured; a boat bottom keel frame for placing the lifeboat is in a horizontal state; an installation position of the high-pressure escape cabin is determined through an escape cabin tool and marked, the keel frame, a lower outer shell of the boat body, a bow hook base, a cabin wall and a broadside internal structure are fixed, after the structures are solidified, a lower inner shell is hoisted into the lower outer shell of the boat body to be pre-folded, then the lower inner shell is hoisted out, an impregnated felt is laid, and then the lower inner shell is hoisted into the lower outer shell to be folded; the high-pressure escape cabin is hoisted into the lower inner shell and is installed and fixed by adjusting the position; and a lateral butt joint port is fixed, the upper inner shell and the upper outer shell are installed, a floating body is filled, the upper outer shell and the lower outer shell are pre-folded, a size of a gap is determined, and the impregnated felt is laid to finish folding. According to the method, the strength of the lifeboat is improved, and a sailing resistance is reduced.

The invention proposes a method for installing a saturated diving pressure chamber, which belongs to the technical field of diving system equipment installation, and includes the following steps: first, determine the positioning datum line on the deck, then set the TUP adjustment tool and the DDC adjustment tool and transfer the diving transfer cabin and The diving living cabin is placed on the TUP adjustment tooling and the DDC adjustment tooling respectively, and then the precise positioning line of the diving transfer cabin is set, and the final positioning of the diving transfer cabin is completed through the precise positioning line; then, the diving living life is fine-tuned through the DDC adjustment tooling cabin, so that the distance, deflection angle and eccentricity between the flange of the second manhole and the flange of the third manhole reach the allowable range; finally, process the sacrificial ring according to the value of the distance and assemble the sacrificial ring to the flange of the second manhole and the flange of the third manhole. hole between the flanges. The method not only solves the problem of the installation accuracy of the manhole flange in the installation of the saturated diving pressure chamber, but also simplifies the existing installation method, shortens the installation period, and has high practicability.

The invention discloses an underwater sacrificial anode connecting device and an underwater sacrificial anode connecting method. The device comprises a connecting base plate (2), a fixed stud (3) and a fixed nut (5). The method comprises the following steps: integrally casting a sacrificial anode (1) and the connecting base plate (2), and forming a stud through hole (21) in the connecting base plate (2); causing the fixed stud (3) pre-provided with the fixed nut (5) to vertically penetrate through the stud through hole (21), and fixing the bottom end of the fixed stud (3) together with a target connecting object (4) in a friction stud welding manner; downwards rotating the fixed nut (5) until the connecting base plate (2) is locked with the target connecting object (4), thereby fixing the sacrificial anode (1) on the target connecting object (4). According to the device and the method, underwater sacrificial anode connecting operation can be effectively simplified on the premise of ensuring welding quality; moreover, when the device and the method are applied to the welding of a deep-water steel structure, saturation diving welding can be replaced, so that construction cost is greatly lowered.

The invention relates to a method for installing compression and decompression chambers and a transition chamber of a saturated submersible ship, comprising the following steps: S1, marking and installing a base; S2, pre-assembling a pressing plate; S3, leveling; S4, mounting an X-direction thrust block, a Y-direction thrust block and a 7-shaped pressing block: welding the X-direction thrust block, the Y-direction thrust block and the bottom surface of the 7-shaped pressing block on the base, and respectively welding the side surfaces of the X-direction thrust block and the Y-direction thrustblock on the side walls of the pressing plate, wherein the upper end of the 7-shaped pressing block is pressed on the upper surface of the base, and the side walls of the 7-shaped pressing block and the side walls of the pressing plate and the base are respectively provided with a gap, and the compression and decompression chambers can be slightly displaced in the X-direction and the transition chamber can be slightly displaced in the Y-direction; and S5, performing infusion of epoxy layer. The method for installing compression and decompression chambers and a transition chamber of a saturatedsubmersible ship solves the technical problem that the compression and decompression chambers and the transition chamber of the saturated submersible ship are difficult to ensure the level when beinginstalled, reduces the installation difficulty, shortens the installation time and saves the installation cost compared with the conventional installation method of leveling with the steel cushion block.

The invention relates to a wave absorbing type saturation diving moon pool and belongs to the technical field of ship diving moon pools. The diving moon pool of a saturation diving bell is characterized in that hollow interlayers are arranged outside the side walls on the periphery of the saturation diving moon pool, horizontal partitioning plates and vertical partitioning plates are arranged in the interlayers, the horizontal partitioning plates and the vertical partitioning plates divide the interlayers into a plurality of spaces, and openings are formed in the horizontal partitioning plates and the vertical partitioning plates respectively. Water waves in the diving moon pool are removed or lowered, and accordingly the safety of diving bell diving and going out of water is improved. The phenomenon of vertical pumping air blocking generated when the diving bell goes up and down through the diving moon pool is avoided, and the technology difficulty of slamming on the diving bell of vertical pumping air blocking in the diving moon pool is removed. Meanwhile, the technology measures that an air blowing system is used for forming a bubble damping layer are used, and great safety effect is achieved.

The invention provides an equipment mounting point positioning method of a saturated diving system. The method comprises the following steps of 1, determining a central point of a moon pool; 2, positioning a base mounting point of a transfer cabin; 3, positioning a flange interface of the transfer cabin; 4, positioning a mounting point of a compensation frame; 5, positioning a transfer travellingcrane mounting point of a diving bell. According to the method, by the determined equipment mounting points measured and positioned on site, the mutual correspondence position relation of the equipment mounting points in the ship body is ensured, and the situation that the equipment mounting points deviate from the theoretical mounting points due to the deformation of the ship body structure and the deviation of the theoretical size, is avoided.

The invention discloses a method for replacing a mooring anchor leg, which includes: adjusting the heading of a floating production, storage and unloading oil tanker; installing the anchor point of a new anchor leg through an anchor point installation ship, and laying an anchor head chain and a new anchor cable ;Recover the newly anchored cable joint through the anchor chain laying ship, install the dynamometer, and implement tensioning operations on the new anchor leg; recover the adjustment chain, remove the dynamometer from the adjustment chain, and adjust the length of the adjustment chain; The counterweight chain is connected with the adjustment chain, and the new counterweight chain is laid to the seabed; the old anchor leg is cut by the saturation diving support vessel and the air diving support vessel, and the old upper anchor cable is recovered; the new upper anchor cable is installed, and the installation The new upper anchor cable is connected to the new counterweight chain. The invention can realize the replacement of the mooring old anchor legs when the floating production storage and offloading tanker is in service, avoiding the release and tie-back of the floating production storage and offloading tanker, greatly reducing the workload and improving the construction efficiency And reliability, and reduce oil field production loss and production value loss.

The invention discloses a method for utilizing two cranes on a saturation diving support vessel to mount a vertical pipe. The method is characterized by including the following steps: 1, transferring operating personnel to a barge; 2, mounting lower-section vertical pipe rigging; 3, experimentally hoisting the lower section of the vertical pipe by the cranes; 4, transferring the operating personnel back; 5, lifting the lower section of the vertical pipe by the cranes, and moving the barge out; 6, fixing the lower section of the vertical pipe on a rail of the barge by the cranes; 7, lowering the lower section of the vertical pipe into water, and maintaining the lower section of the vertical pipe vertical in the water; 8, loosening a main crane; 9, enabling an underwater robot to dive; 10, embedding the lower-section of the vertical pipe into a vertical pipe clamp for fixing; 11, repeating the above steps until the whole vertical pipe is mounted completely. By the method, only the saturation diving support vessel and a self-propelled barge are needed to perform mounting of a deepwater vertical pipe, so that requirements on vessel resources are greatly lowered, and working efficiency and economic benefit are improved.

The invention relates to a domestic water supply system for a large-depth saturated diving living cabin. The water inlet on the top of the water storage tank is connected to one end of the water supply pipeline, the other end of the water supply pipeline is connected to the tap water source, and the cold water outlet at the bottom of the water storage tank is connected to the cold water pipeline. One end is connected, and the other end of the cold water pipeline is bifurcated to form several cold water branches that supply water to the basins, showers and toilets. The conventional hot water outlet at the bottom of the water storage tank is connected to one end of the first hot water pipeline. The other end of the water pipeline is bifurcated to form several hot water branches for supplying water to each basin and shower device. The invention is equipped with a pressure compensation valve and a safety valve, which can control the water pressure when the domestic water flows out, so that divers can obtain a comfortable experience, and prevent the water supply from being interrupted by insufficient pressure or the safety of users is threatened by excessive pressure. It is equipped with a spare hot water pipe One-way and two-way switching pipelines can maintain a continuous supply of domestic water in an emergency, which is stable and reliable.