58 results about "Buoyancy" patented technology

The invention discloses a wind power generation system. The system comprises a ground device; the floating device comprises an adjusting air floating piece and a first annular air floating piece, the adjusting air floating piece is movably connected with the ground device, the first annular air floating piece is connected with the adjusting air floating piece, and a through duct is defined by the inner wall of the first annular air floating piece; the wind power generation device is arranged in the duct; and the position of the gravity center of the adjusting air floating piece in the extending direction of the duct is adjustable. According to the wind power generation system, the influence of airflow disturbance, temperature change and buoyancy lift gas leakage on the floating device can be reduced, the phenomenon that the pitching posture change amplitude is large is reduced, particularly, the included angle between the wind receiving face of the blade of the wind power generation device and the airflow direction is closer to the optimal value, the effective wind energy area flowing through the blade is increased, and the wind power generation efficiency is improved. And the fluctuation of the wind energy yield along with the posture is reduced, so that the wind energy utilization efficiency and the power generation output power are improved.

The invention discloses a water quality monitoring device for environmental engineering, and relates to the technical field of environmental engineering, the water quality monitoring device comprises a buoyancy tank, a water quality monitoring mechanism and a self-cleaning mechanism, the water quality monitoring mechanism comprises a monitoring probe and a protective cylinder, the monitoring probe is arranged below the buoyancy tank, the protective cylinder is arranged below the buoyancy tank, and the self-cleaning mechanism is arranged below the buoyancy tank. And the monitoring probe is arranged in the protective cylinder. High-pressure gas is sprayed outwards from the interior of the protective barrel through the one-way spray head, so that attachments accumulated on the protective barrel are effectively washed off, the cleaning effect on the attachments on the surface of the protective barrel is effectively improved by driving the protective barrel to rotate, the one-way spray head is driven to do lifting reciprocating motion while the protective barrel is driven to rotate, and the cleaning efficiency is improved. The one-way nozzle can spray air outwards in the protective barrel in an up-down swinging manner, so that the washing effect on attachments is further improved, and the influence on water quality monitoring caused by accumulation of a large number of attachments on the protective barrel is avoided.

The invention discloses a self-inflating underwater buoy cabin released through electromagnetic control. The self-inflating underwater buoy cabin is characterized in that a locking and disengaging device is arranged in a floating bag cabin shell; in an initial state, the buoy is folded and placed in the shell of the floating bag cabin; the lower end of the buoy is in locking connection with the locking-disengaging device. And during separation and release, after the electromagnetic valve unlocks the buoy by the locking and releasing device, the buoy is ejected upwards by the locking and releasing device, and the buoy is automatically inflated to further float and unfold by utilizing the reduction of external water pressure. Compressed gas in the pressure bottle is injected into the floating bag by utilizing the actual process that the external pressure is gradually reduced when the buoy floats upwards, so that automatic inflation is realized, the size of the buoy is further reduced by adopting the flexible antenna, and finally, the miniaturization design of the whole buoy is realized.

A device relating to a floater for use by a non-swimmer for buoyancy comprising a floating flatbed with coded descriptions (lateral ends: front end 14, back end 12) and a plurality of paired straps with buckles (20,22) to secure the floater flatbed (10) fixed in the swimmer’s body. This is designed to keep the non-swimmer afloat while concentrating on their hand and leg exercises. The floating flatbed is wrapped either at the upper limbs posterior or anterior portion of the body; a webbing belt with safety mechanisms buckled around the body which can be fixed at the levels; waist, abdominal, and upper back (posterior) or chest part (anterior). An adjustable strap is buckled across shoulders (24, 26) to fasten the device in place below the jaw with a plane surface of a floater which allows use purposely for either supine or prone floating mechanics fundamental in learning the basic skills for any appropriate floating position. Apparently, problems like drowning and other water accidents happen in just any part of the globe usually caused by panic and water anxiety. The device contains characteristics easy for use by non-swimmers at any age level for water safety and training device for non-swimmers particularly those who manifest water anxiety. Acquired skill in floating somehow creates mental alertness as a greater opportunity for survival during atrocities.

The invention discloses a quantitative prediction method for water logging of a well section of an infilled horizontal well of an offshore water-drive oil field. The method comprises the following steps: S1, dividing a well spacing area of the horizontal well into a plurality of grids; s2, establishing a displacement pressure, gravity and buoyancy coupled flooding thickness quantitative prediction mathematical model, and drawing a waterline propulsion chart; s3, based on the waterline propelling condition, the remaining oil distribution coefficient of the well spacing area is calculated; s4, screening remaining oil gathering grids according to the remaining oil distribution coefficient, and quantitatively judging the water logging condition of the well section of the horizontal well; and S5, reevaluating the enrichment degree of the remaining oil, and further evaluating and determining the potential tapping grid of the horizontal well. According to the quantitative prediction method for flooding of the well section of the infilled horizontal well in the offshore water-drive oil field, three-dimensional representation of the flooding position and the flooding degree of the well section of the infilled horizontal well in a high-water-content oil reservoir can be achieved, the remaining oil enrichment area suitable for implementing the horizontal well can be accurately screened and evaluated, then well position deployment of the horizontal well is guided, and the infilled adjustment effect is improved.

The application provides a method for determining the structural temperature field and thermal deformation of a compressor rotating disc cavity, which can be applied to the technical field of heat analysis of turbomachinery. The method comprises the following steps: obtaining the geometric parameters, operating parameters and working substance property parameters of the gas in the disc cavity; based on the balance between the buoyancy effect and the viscous effect driven by the centrifugal force, the average heat flux density of the outer ring cover of the disc cavity is obtained according to the outer ring cover radius, the axial gap of the disc cavity, the rotating disc speed, the outer ring cover temperature, the rotating core zone temperature, the Prandtl number, the density, the dynamic viscosity and the thermal conductivity; based on the heat conduction analogy relationship of the laminar Ekman boundary layer, the local heat flux density of the rotating disc is obtained according to the rotating disc speed, the kinematic viscosity, the thermal conductivity and the difference between the rotating disc temperature and the rotating core zone temperature; and the structural temperature field distribution and the thermal deformation of the rotating disc cavity are obtained according to the average heat flux density of the outer ring cover of the disc cavity and the local heat flux density of the rotating disc.

This invention discloses a method for handling subsea pipelines during uplift, comprising: Step S1, pipeline gas discharge and repositioning: When an abnormal uplift occurs in a laid subsea pipeline, the pipeline is pressurized to allow the gas inside to flow back to the onshore section and be discharged through the onshore section's exhaust valve, causing the pipeline to fall back to its initial installation elevation; Step S2, trench dredging and pipeline leveling: An underwater excavator is used to excavate along both sides of the pipeline to below the design elevation of the pipeline bottom, and simultaneously, a mud pump is used to pump the silt to a mud transport vessel, transport it to a designated anti-seepage treatment site, and check the dredging quality. If the pipeline is suspended, graded sand and gravel are used for leveling; Step S3, precast concrete cover plate fabrication; Step S4, underwater positioning and cover plate installation preparation; Step S5, precast concrete cover plate installation; Step S6, end sealing. When an abnormal uplift occurs in a laid subsea pipeline, this invention can suppress pipeline uplift and increase the pipeline's stability on the seabed.

The invention discloses an aquaculture device capable of controlling floating and sinking, which comprises a floating frame, a culture container is arranged in the floating frame, a lower net plate is fixedly connected in the culture container, an upper net cover is fixedly connected to the top end of the culture container, a side plate is fixedly connected to the culture container, an air bag is fixedly connected to the lower part of the side plate, and the air bag is communicated with an air pump. The air pump is fixedly connected to the floating frame, the floating frame is provided with a plurality of winches, the winches are provided with ropes, the ends of the ropes are fixedly connected to the side plates, the breeding container is provided with a lower through opening, the lower through opening is provided with a three-way connector, the three-way connector is provided with a second outlet and a third outlet, and the second outlet is communicated with a sewage pump. And a valve is mounted on the third outlet. According to the device, the culture container can ascend or descend, meanwhile, the device can cope with extreme weather, the device can be adjusted to sink and float into a water temperature layer suitable for fishes according to the water temperature condition, and meanwhile convenience of fish school management in the culture process is achieved.

This invention discloses a model-based method and system for determining the fixed buoyancy volume of an irregular underwater object. The method includes: acquiring three-dimensional geometric model data of an underwater device; monitoring the immersion depth D of the underwater device in water in real time using sensors; and obtaining the total volume V of the underwater device based on the three-dimensional geometric model data and the immersion depth D. t and immersion volume V d Based on the total volume V of the underwater device t and immersion volume V d Obtain the initial fixed buoyancy volume of the underwater device; analyze the surface state of the object, and use a fluid dynamics model to calculate the hydrodynamic force F acting on the underwater device. d Based on the initial fixed buoyancy volume and hydrodynamic force F d The final fixed floating volume is obtained. This invention comprehensively considers fluid dynamics factors, simplifies the calculation process, has strong adaptability, and improves calculation accuracy.

The invention discloses an absolute measurement method and device for the density of molten salt and solution, and belongs to the field of molten salt physical property tests.The measurement method comprises the steps that 1, a cone and cylinder composite heavy hammer is adopted to measure the density of the molten salt or solution; 2) arranging two measuring positions on the cylinder section of the heavy punch, taking the section between the two measuring positions as a middle measuring section, the length of the middle measuring section is equal to the distance between the two measuring positions, the diameter of the middle measuring section is equal to the diameter of the cylinder of the heavy punch, and measuring at the two positions in sequence; (3) the density of the fused salt or the solution is determined by the volume of the middle measuring section of the heavy hammer and the buoyancy borne by the middle measuring section, so that the density of the fused salt and the solution is deduced; according to the method, a long-distance microscope system is adopted to directly measure the thermal expansion of the heavy hammer at high temperature, calibration by a standard substance is not needed any more, when the method is adopted to measure the density of the fused salt and the solution, the volume of the heavy hammer does not need to be calibrated, additional force caused by surface tension is completely removed, the measurement process is greatly simplified, and the measurement precision is improved.

This utility model relates to the field of tunnel and underground engineering technology, specifically to the field of large-diameter shield tunnel construction, and more specifically to an anti-buoyancy reinforcement system for the shallow overburden starting zone of a shield tunnel. It overcomes the problems of complex construction, high cost, low anti-buoyancy efficiency, or potential damage to the tunnel structure itself in existing technologies. The system includes enlarged-base anti-uplift piles located within the ground reinforcement zone and on both sides of the shield tunnel. Each enlarged-base anti-uplift pile includes a normal diameter section, with an enlarged-base section at the lower end of the normal diameter section. The outer diameter of the enlarged-base section is larger than that of the normal diameter section. Laterally distributed anti-buoyancy pressure plates are connected to the tops of the enlarged-base anti-uplift piles on both sides of the shield tunnel.

The utility model relates to heat conduction liquid filter technical field, concretely is a kind of self-cleaning formula filter element assembly of heat conduction liquid filter, including filter element assembly, fixedly installed in the brush net flow conversion subassembly of filter element assembly;The filter element assembly includes bottom end head and top end head, fixedly installed between built-in filter cover and external filter cover of bottom end head and top end head, and built-in filter cover and external filter cover between fixedly installed annular gap.By fixedly installed built-in filter cover and external filter cover of double-layer filter screen structure, and fixedly install annular brush head in the gap between two filter covers, with liquid along the flow guide pipe and pour into, the float pad under the action of buoyancy will reverse traction multiple cable and annular brush head to move, eventually annular slide head will brush to the net surface adjacent built-in filter cover and external filter cover, to ensure that filter screen is automatically cleaned during each temporary flow.

The invention provides a floater, system and method for oil-water liquid level detection, and belongs to the technical field of liquid level measurement and recognition. The outer side of the floater body is sleeved with the balance weight ring, the floater body is made of the transparent material, and the balance weight ring is made of the metal material, so that the floater body and the balance weight ring are matched to confirm the overall density, and the overall density is stabilized in an oil-water interface interval; therefore, the density of the floater is adjusted, the buoyancy center is changed, and the receiving part of the transmission type photoelectric sensor is shielded. The floater comprises a floater body and a balance weight ring, the floater body is cylindrical and provided with a shaft hole, the top end and the bottom end of the floater body are open, the floater body comprises a first wide-diameter section, a narrow-diameter section and a second wide-diameter section from top to bottom, the lower portion of the narrow-diameter section is provided with a radial inward annular groove, the balance weight ring is annular, and the first wide-diameter section and the second wide-diameter section are connected through the balance weight ring. The inner diameter of the balance weight ring corresponds to the diameter of the groove bottom of the annular groove, and the balance weight ring is arranged in the annular groove in a sleeved mode.

This invention discloses a marine dual-interface observation buoy, comprising a dual-interface temperature measurement mechanism, including an upper probe at the top of the buoy and a lower probe at the bottom; a dual-interface arrival and lifting mechanism for adjusting the buoy's buoyancy and achieving its raising and lowering; and a bottom-contact protection and seabed detachment mechanism for driving the lower probe to vibrate, allowing it to insert into and detach from the seabed. When the upper probe extends above the sea surface, it detects atmospheric temperature, and the lower probe detects seawater temperature; when the lower probe inserts into the seabed, the upper probe detects seawater temperature, and the lower probe detects seabed mud temperature. The buoy possesses dual-interface arrival capabilities at both the seabed-seawater interface and the seawater-atmosphere interface, enabling observation of heat exchange at these interfaces. It allows for soft landing on the seabed, smooth insertion of the lower probe into the seabed for observation, and reduces seabed mud resistance with low energy consumption, achieving rapid ascent.

A zero-buoyancy underwater towed detection platform for complex marine environments includes: a streamlined main body, a fixed high aspect ratio main wing, a movable tail fin adjustment mechanism, an internal load-bearing frame, a pressure-resistant control cabin, a detection payload assembly, a solid buoyancy filling layer, and a detachable pod. This invention combines a solid buoyancy material layout with an internal rigid frame to achieve deep integration and synergistic configuration of the two.

The utility model relates to the technical field of pipe network detection equipment, and discloses a pollution discharge closed conduit desilting detection device which comprises a center detection shipway part and buoyancy chamber propelling parts installed on the two sides of the center detection shipway part, and the buoyancy chamber propelling parts are installed on the two sides of the center detection shipway part. Meanwhile, the pump-jet propeller is mounted at the rear end in the cavity buoyancy chamber, so that compared with traditional detection equipment adopting conventional spiral propulsion, the phenomenon that a propeller is wound is avoided, and movement detection and a camera in the pipeline are more convenient; and the camera and the sonar part are mounted on the reinforcing frame body, so that the condition in the pipeline can be comprehensively detected, and information can be transmitted to the ground through the electrical cabin part.

The invention provides a virtual wellhead torsion simulation system and method under a torsion-longitudinal coupling condition, and the system distributes an axial friction coefficient component and a tangential friction coefficient according to a friction force direction principle, and divides a tubular column into a plurality of tubular column units. According to the position sequence of each unit, calculating contact positive pressure and upper end axial force based on the axial friction resistance coefficient component, the tangential friction resistance coefficient component, the lower end axial force and the buoyancy weight; determining the friction torque of the tubular column unit according to the friction coefficient component, and determining the friction resistance of the tubular column unit in combination with the contact positive pressure; calculating torsional vibration and longitudinal vibration data of the determination unit by considering the time step length; and the torsion angular velocity and the axial velocity of the tubular column unit are determined according to the torsion angle and the axial displacement of the tubular column unit. By adopting the scheme, the problems of tedious operation and long execution period in the prior art can be solved, the response process of wellhead torsion and a drill string is simulated by utilizing virtual operation, and parameter decision guidance is realized for improving the drag reduction effect and the tool surface adjustment efficiency.

The application provides a small buoy and a coordinated action implementation method thereof. A buoyancy bag with a maximum diameter is designed in a middle cabin section of the buoy to adapt to a change in the central position of the buoy, and the buoy floating stability is improved. The buoyancy bag gas cylinder is designed to inflate the buoyancy bag, and the buoyancy bag is inflated and expanded to the designed diameter to adjust the buoyant center position of the buoy, so that the buoy floating posture is kept stable. The lifting gas cylinder is inflated to inflate the piston cavity, the thrust generated in the inflation instant is used to overcome the gravity, friction and tensile force of the breakable screw of the detection device, so that the detection device can move to the set height. The gas cylinder is inflated to inflate the sealing cavity of the telescopic mechanism, and the friction and shear pin resistance are overcome to expand the telescopic mechanism. The application provides a small buoy and a coordinated action implementation method thereof, and the detection device lifting and the buoy posture adjustment are realized in coordination. The coordinated action has high reliability, and the technical problems of the detection device lifting and the buoy posture dynamic adjustment in a small space are solved.

The application discloses a QFN electroplating hanging buckle design applied to the technical field of electroplating processing, a plurality of substrates can be processed at a time through a plurality of plating grooves formed in a main frame, processing efficiency is improved, stability during use is improved through a plurality of electroplating hanging openings which can be fixed with a hanging frame, when the main frame is connected with a negative power supply, the main frame can be made to have uniform current density during electroplating through discharge wires in a plurality of discharge grooves, electroplating quality is improved, and the uniformity of electroplating thickness is maintained, when the main frame is immersed in an electroplating liquid, the second floating plate will be moved upward due to the buoyancy of the electroplating liquid, so that the second floating plate will not extrude the second elastic air bag, the hard cleaning brush layer at the bottom is driven by the movable cleaning plate to clean the just-deposited plating layer, and at the same time of cleaning, the electroplating liquid in the elastic tube will flow out from the flushing holes to flush the cleaning brush layer and the discharge groove, so that the cleaning effect is improved, and the dirt cleaned can be effectively prevented from adhering to the cleaning brush layer.

1. Name of the designed product: floating board. 2. Use of the designed product: for water entertainment, auxiliary swimming, providing buoyancy for the body of a person lying in the water. 3. Design points of the designed product: in shape. 4. Picture or photo best indicating the design points: change state reference figure 1.

This invention belongs to the technical field of buoyancy performance testing and measurement. It discloses a buoyancy and stability measuring device and method for a buoy. The measuring device specifically comprises: a fixed platform connected to a support; a first telescopic mechanism connected vertically to the fixed platform, with its bottom connected to an intermediate platform; a connecting rod, a second telescopic mechanism, and a third telescopic mechanism connected vertically below the intermediate platform; a moving platform connected to the bottom of the connecting rod, with its bottom rotatably connected to the moving platform; the second telescopic mechanism rotatably connected to the moving platform and movable along the y-axis; the third telescopic mechanism rotatably connected to the moving platform and movable along the x-axis; and the moving platform is fixedly connected to the buoy. This invention, through the ingenious and reasonable arrangement of the three telescopic mechanisms, allows for arbitrary coupling of the buoy's roll angle, pitch angle, and draft through linear motion, thereby achieving high-precision simulation of various buoyancy states.

This invention discloses a marine dual-interface observation buoy, comprising a dual-interface temperature measurement mechanism, including an upper probe at the top of the buoy and a lower probe at the bottom; a dual-interface arrival and lifting mechanism for adjusting the buoy's buoyancy and achieving its raising and lowering; and a bottom-contact protection and seabed detachment mechanism for driving the lower probe to vibrate, allowing it to insert into and detach from the seabed. When the upper probe extends above the sea surface, it detects atmospheric temperature, and the lower probe detects seawater temperature; when the lower probe inserts into the seabed, the upper probe detects seawater temperature, and the lower probe detects seabed mud temperature. The buoy possesses dual-interface arrival capabilities at both the seabed-seawater interface and the seawater-atmosphere interface, enabling observation of heat exchange at these interfaces. It allows for soft landing on the seabed, smooth insertion of the lower probe into the seabed for observation, and reduces seabed mud resistance with low energy consumption, achieving rapid ascent.

This application relates to the field of intelligent buildings, and specifically discloses an anti-buoyancy pressure relief drainage system for the basement floor of a building. It uses a deep learning-based neural network model to mine the time-dimensional variation characteristics of the water level value of the accumulated water, and adaptively adjusts the power value of the water pump based on the variation of the water level value, thereby ensuring safety while reducing energy consumption.

The utility model discloses an air energy type oxygen -increasing machine relates to oxygen -increasing machine technical field, including the buoyancy tank, the buoyancy tank inside cooperation and installation have water pump and / or motor, the utility model discloses when using, the water pump is opened, and the water pump carries out the extraction to the water body, then throws the water body to the air, and the water body scatters to the four around in the air, through the mode of injection makes the water body and air fully contact to increase the oxygen content of water body to reach the effect of oxygen -increasing, when opening the motor, the motor drives first fan blade and second fan blade high -speed rotation, and water surges from the water inlet channel of the periphery of the conical water inlet connecting piece, and first fan blade stirs the water body, under the high -speed rotation state, the water body is thrown up, when the water body that is choked up collides with the high -speed rotation second fan blade, will form several tiny water droplets and spread to the four around, like this can make the water body and air contact area greater, make the water body more oxygen -rich.

The invention discloses a turbine blade middle self-adaptive design method based on rotating buoyancy force. The method comprises the steps that the boundary condition of a turbine blade heat exchange structure, the rotating direction of a system and the use amount of cooling gas are determined; wherein the boundary conditions comprise geometric boundary conditions and thermal boundary conditions; dividing the internal cooling channel based on the geometric boundary condition to obtain a channel layout in which the cooling gas flows circumferentially relative to the blade, and determining the flow direction of the cooling gas in the channel based on the rotation direction of the system; based on the channel layout and the cooling gas consumption, determining the geometric size and shape of the cooling channel, calculating to obtain temperature distribution and Nusselt number distribution of the heat exchange structure, and if preset conditions are met, obtaining final heat exchange structure parameters; otherwise, adjusting the parameters of the cooling channel until the requirements are met. Compared with a traditional axial circulation channel, the heat exchange capacity of the outer side wall face of the channel is remarkably improved, the temperature level is lowered, and the temperature distribution uniformity degree is improved.

The invention discloses a multi-degree-of-freedom motion control and attitude adaptive adjustment method for an underwater booster, relates to the technical field of underwater multi-degree-of-freedom attitude control and thrust distribution, and is used for solving the problems of attitude instability and control failure of the underwater booster in a narrow channel, thrust saturation and disturbance environment. Firstly, based on spatial isolation arrangement of a power supply and a sensing assembly, a stable posture in which the gravity center and the buoyancy center are coaxial is constructed; secondly, unlocking a gear shifting passage after water entry judgment, and analyzing a user gear and a posture state to generate a six-degree-of-freedom target; furthermore, a high-precision attitude is estimated by adopting extended Kalman filtering, and thrust offset in a saturation region is corrected through a potential energy gradient driven by a residual error, so that attitude asymptotic elimination is realized. The method has the capabilities of multi-dimensional disturbance identification, energy-phase linkage judgment and dynamic boundary obstacle avoidance, and is suitable for high-precision boosting control in a complex underwater environment.

The invention relates to the field of metal pressure processing, discloses an anti-slip and anti-scratch waterproof roller system for thin-gauge steel strip continuous rolling and a control method, and aims to solve the problem that a waterproof roller slips and scratches a steel strip due to a fluid dynamic pressure effect during high-speed continuous rolling of the thin-gauge steel strip. The method comprises the steps that the linear speed, the acting load and the cooling liquid environment parameters of a steel belt and a waterproof roller are obtained in real time; constructing a slip rate monitoring model, calculating fluid dynamic pressure distribution characteristics, and judging a slip risk level; the pressing load or the active driving torque is dynamically adjusted to counteract buoyancy force generated by fluid dynamic pressure, and the critical static friction state is maintained; and the control parameters are corrected in real time through feedback monitoring. The system comprises a sensor array, a control unit, an execution mechanism and a waterproof roller with a drainage structure. Through active compensation and closed-loop control, the synchronous precision of equipment operation is improved, the slipping and scratching defects of the steel belt are effectively eliminated, the adaptability to extreme working conditions is enhanced, and the service life of the equipment is prolonged.

The utility model belongs to the technical field of nitrogen lifting drainage, and particularly relates to a nitrogen gas lifting drainage device which comprises a gas lifting valve, a pipe body is arranged on one side of the gas lifting valve, a through pipe is installed in the pipe body, a gas rod is arranged on one side of the through pipe in an attached mode, the lower end of the gas rod is connected with a gathering pressurization mechanism, and a gas inlet mechanism is arranged on one side of the gas rod and located in the gas lifting valve. The air inlet mechanism comprises a transmission cylinder which is fixedly installed on one side of the lower portion in the gas lift valve, one side of the transmission cylinder communicates with an air inlet pipe, one end of the air inlet pipe extends out of the gas lift valve, and a connecting pipe is arranged on the side, away from the air inlet pipe, of the transmission cylinder. By means of high-speed nitrogen pushing blades, driving a rotating shaft and a branch pipe to rotate and cooperation of reverse acting force generated when the branch pipe sprays air and nitrogen pushing, nitrogen cyclone liquid spraying is achieved, nitrogen can be evenly distributed, liquid can be stirred, the gas flowing path can be widened, local nitrogen gathering is prevented, and gas-liquid mixing is promoted; and nitrogen can be in full contact with liquid, buoyancy is exerted, and the lifting and liquid discharging efficiency of the gas lift valve is remarkably improved.

A kind of angle measurement sensor based on float ball type and absolute angle measurement method, for sealed and fixed sensor base, sensor base is provided with sensor coordinate system X axis mark and sensor coordinate system Y axis mark for viewing sensor coordinate axis, the middle of sensor base is provided with high-precision timer for recording electromagnetic wave transmission time, four signal receivers are arranged on the periphery of high-precision timer on sensor base, sensor shell for fixing object in cavity is fixed on sensor base, sensor cavity is filled with sensor cavity stabilizing liquid for floating ball suspension in the cavity of sensor shell.The present application utilizes electromagnetic wave ranging and vertical upward principle of buoyancy, constructs sensor coordinate system, calculates the position of floating ball oscillation launching device in sensor coordinate by measuring the propagation time of electromagnetic wave, and then calculates absolute angle, realizes angle measurement.

The invention discloses a three-buoyancy-box tension leg platform mooring system and a working method thereof.The system adopts a three-buoyancy-box tension leg platform as an ocean platform, the system further comprises a damping assembly and three mooring ropes, the damping assembly comprises a floating anchoring part, three first springs and three reset spring sets, and the floating anchoring part is connected with the three first springs; the floating anchoring parts are arranged at the joints between the stand columns and the three floating boxes. Wherein the stand column is used for loading a fan, and the three buoyancy tanks and the stand column serve as a foundation structure of the fan; when the fan is subjected to environmental load, the buoyancy tank section of at least one of the three mooring cables applies tensile force opposite to the environmental load to the buoyancy tank corresponding to the buoyancy tank section through the corresponding reset spring set, and the initial sections of the rest mooring cables are pulled by the floating anchoring part to enable the buoyancy tank section of the other mooring cables to be fixed. The corresponding reset spring sets apply pulling force opposite to the environmental load to the corresponding buoyancy tanks, the three buoyancy tanks and the stand columns are prevented from fluctuating along with the environmental load, and the foundation structure of the draught fan tends to be in a stable state.