33 results about "Saturation diving" patented technology

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 discloses a saturated diving pressure reduction method and system. The saturated diving pressure reduction method comprises the steps: acquiring the initial pressure reduction depth pressure and the initial environment oxygen partial pressure in a diving pressurization cabin; calculating a first stay station depth pressure; iteratively calculating the partial pressure of the inert gas in the slowest theoretical tissue of the human body at the beginning of the next stop station; iteratively calculating the allowed residence time of the current residence station; repeating the iteration process to obtain the allowable staying time corresponding to all the staying stations in the saturated diving decompression process; and reducing the pressure according to the depth pressure of each staying station and the allowed staying time of each staying station. According to the technical scheme, the pressure reduction scheme adaptive to the actual situation can be automatically generated and flexibly adjusted.

The invention discloses aluminum diacetate hydroxide and acetic acid compound ear drops and a preparation method thereof. The compound ear drops comprise aluminum diacetate hydroxide, acetic acid and pharmaceutically acceptable auxiliary materials. The aluminum diacetate hydroxide and acetic acid compound ear drops provided by the invention are nonirritating, have a remarkable preventive effect and are relatively low in cost, can greatly lower the occurrence rate of acute otitis externa in saturation diving operation, and are convenient to use, low in cost, simple in preparation and controllable in quality.

The invention relates to a saturated diving helium speech interpretation method based on lexicon learning, which comprises the following steps of: in a system comprising a diver, a correction network and an interpretation network, establishing a working language lexicon commonly used for saturated diving operation, reading by the diver in different environments, and generating a supervision signal and a vector signal of the correction network, wherein the correction network learns helium voices of different divers at different diving depths to obtain network correction parameters, and corrects the helium voices of the divers to obtain corrected voices; and the interpretation network learns the corrected voice and completes interpretation of the helium voice. By setting individual voice signal features and working language lexicon features of the diver in different environments, machine learning is introduced into helium voice interpretation, the problem of interpretation of saturated diving helium voice is solved, the requirement of a network for the number of learning samples is reduced, the adaptivity of the helium voice interpreter in different diving depths is improved, and the method is especially suitable for complete interpretation of helium voices in different diving depth environments.

According to the saturated diving helium speech interpretation method and system based on multi-objective optimization, in at least one system comprising a diver and a filter, a diver working language phonetic symbol library and a common working language word library are established, and the diver reads to generate a phonetic symbol standard speech library, a phonetic symbol helium speech library and a common working word speech library; and designing an impulse response coefficient of the filter by using a multi-objective optimization algorithm, correcting and interpreting the helium voice signal after tag sampling word by word, and continuously updating the impulse response coefficient to complete the complete interpretation of the helium voice. According to the method, individual phonetic symbol voice library characteristics of a diver in different environments are set, and system parameters of a filter are designed by adopting a multi-objective optimization algorithm and are continuously updated and corrected, so that the dependence on the number of machine learning samples is eliminated, saturated diving helium voice interpretation is stabilized, the performance of a helium voice interpreter is always in an optimal state, and the reliability of the system is improved. The self-adaptability of the helium voice interpreter at different diving depths is improved, and complete interpretation of helium voice is realized.

The invention relates to the technical field of saturation diving, in particular to an external circulation type environmental control system. The external circulation type environmental control system comprises an environmental control machine and a cold and hot water unit; the environmental control machine is arranged outside a pressurized cabin of diving equipment and connected with the pressurized cabin through a pressure bearing air pipe to obtain gas in the pressurized cabin and conduct gas quality management on the gas so as to provide the gas subjected to gas quality management for thepressurized cabin; and the cold and hot water unit is arranged outside the pressurized cabin and connected with the environmental control machine through a medium water pipeline to provide medium water needed in the gas quality management process for the environmental control machine. According to the external circulation type environmental control system provided by the invention, the gas in thepressurized cabin of the diving equipment can be managed, the environmental control machine is arranged outside the pressurized cabin, and thus the comfort degree of residing of divers in the pressurized cabin can further be increased.

The invention discloses an attached pipe cable system based on a jacket platform, which comprises a dynamic submarine cable connected with a power system on a jacket and a plurality of pipe clamps for fixing the dynamic submarine cable and the jacket, and the pipe clamps comprise first fixing parts and second fixing parts, a mounting hole used for being fixed to a jacket is formed between the first fixing part and the second fixing part, the first fixing part and the second fixing part are connected through a connecting piece, and a through hole allowing a dynamic submarine cable to penetrate through is formed in the second fixing part. According to the attached type pipe cable system based on the jacket platform and the design method, dynamic submarine cables are successfully applied to the fixed jacket platform, high-risk and high-cost operation such as saturated diving and underwater welding does not need to be carried out on newly-added cables of the jacket platform, and a large amount of cost is saved.

The invention provides a saturated diving pressure cabin mounting method, which belongs to the technical field of diving system equipment mounting, and comprises the following steps of: firstly, determining a positioning reference line on a deck, then, setting a TUP adjusting tool and a DDC adjusting tool and placing a diving transfer cabin and a diving living cabin on the TUP adjusting tool and the DDC adjusting tool respectively, then, setting an accurate positioning line of the diving transfer cabin and finishing final positioning of the diving transfer cabin through the accurate positioning line; then, finely adjusting the diving living cabin through the DDC adjusting tool, so that the distance, the deflection angle and the eccentricity between a second manhole flange and a third manhole flange reach an allowable range; and finally, processing a sacrificial ring according to the numerical value of the distance, and mounting the sacrificial ring between the second manhole flange andthe third manhole flange. The method not only solves the problem of mounting precision of the manhole flanges in mounting of the saturated diving pressure cabin, but also simplifies the existing mounting method, shortens the mounting period, and has higher practicability.

The invention relates to a discharge system for domestic sewage of a saturation diving habitat under a large depth. A sewage discharge tank is arranged below the habitat, an electrical control cabinetcontrols an upper automatic switching valve, a lower automatic switching valve, an exchanging pipeline automatic switching valve, a gas inlet valve and a gas discharge valve, and meanwhile, the discharge system is also provided with a diving helium recycling system and a saturation diving air source system. Through the arrangement of the saturation diving air source system, the sewage discharge tank and the habitat are commonly pressurized, and through the linkage design of a toilet lid and the upper electric switching valve, risks of personal injury brought by maloperation under a high-pressure condition are avoided. The matched diving helium recycling system is adopted for recycling, then the loss of diving gas is lowered, the electrical control cabinet provides stable and reliable valve on-off control and liquid level monitoring, and stacking of harmful gas and overflow of sewage are prevented. An air purification device can assist in removing harmful and undesirable odor generatedfrom excrement, and the air environment in the habitat is improved.