39 results about "Bubble curtain" patented technology

Method and apparatus for producing a bubble curtain with a diversity of bubble diameters for purposes such as suppressing surface-related multiple reflections in marine seismic surveys. Bubble generating elements are used that combine porous wall material with discrete holes.

The invention relates to a new type of piling noise reduction device, which includes a noise reduction mechanism, an underwater air bag arranged on the noise reduction mechanism from top to bottom, and a ballast device arranged on the noise reduction mechanism. The noise reduction mechanism is open at one end. A cone structure with a small opening at one end, the underwater air bag provides buoyancy for the cone, the large mouth end of the cone structure is connected to the ballast device, the noise reduction mechanism includes a high-pressure tube spirally coiled, the high-pressure The tube spirally extends from the small mouth end of the noise reduction mechanism to the large mouth end of the noise reduction mechanism. A number of air holes are arranged along the side wall of the high-pressure pipe. The high-pressure pipe is connected to an air compressor. The side wall of the noise reduction mechanism is provided with elastic small ball. The noise reduction device forms a bubble curtain and simultaneously forms a noise reduction mechanism together with the elastic balls to achieve a noise reduction effect.

Method and apparatus for producing a bubble curtain with a diversity of bubble diameters for purposes such as modifying the characteristics of a seismic source used in marine seismic surveys. Bubble generating elements are used that combine porous wall material with discrete holes (91) to create a curtain of diverse-sized bubbles (92).

The invention relates to a device for improving the loading efficiency of a trailing suction dredger, which is installed in the cabin of the dredger and used to prevent sediment from flowing out of the overflow tube in the cabin, including: an air injection device and a lifting device , the air injection device includes an air pump, an air delivery hose and at least one bubble curtain generating tube, the air delivery hose communicates with the air pump and the bubble curtain generating tube, the air outlet end of the bubble curtain generating tube is arranged toward the overflow cylinder, the lifting device and the bubble curtain generating tube The one-to-one connection can drive the bubble curtain generating tube to move up and down. Implementing the embodiment of the present invention has the following beneficial effects: the air pump can generate a large number of bubbles near the overflow pipe through the bubble curtain generating tube to form a bubble curtain. When the water containing sediment flows toward the overflow pipe, the bubbles prevent the sediment from flowing with the water Continue to move, so that the sediment is kept in the cabin, while the water flows away from the overflow pipe, which greatly reduces the loss of sediment at the overflow tube, and effectively improves the loading efficiency of the dredger.

The invention relates to an air bubble curtain blowdown system and a control method, comprising an air bubble curtain generating tube with a vent hole, a high-pressure gas supply device for delivering high-pressure gas to the bubble curtain generating tube, and a gas velocity collection device at the vent hole The first collection module, the second collection module for collecting water flow velocity, the control module electrically connected with the first collection module and the second collection module, and the adjustment module for adjusting the high-pressure gas flow, the adjustment module and the control module electrical connection. During the operation process, the gas discharge velocity and water flow velocity at the exhaust hole are obtained in real time through the first acquisition module and the second acquisition module. The control module processes the collected data and controls the adjustment module to work. The system can realize real-time monitoring. The control of the system is more precise, and the gas discharge speed of the bubble curtain generation tube can be adjusted according to the water flow speed of different sizes, which is suitable for the sewage isolation operation under the environment of different sizes of ocean currents or river speeds.

The invention discloses a reverse digging penetration explosion method having no damage to an installed or used shaft when the shaft well extends. Before a reverse digging penetration rock column (10) to be exploded at the last time, a peripheral bubble curtain generation pipe (12) with jet small holes (11) in the inner side and a middle reinforcing bubble curtain generation pipe (13) with jet small holes (11) in the two sides and the upper part are arranged along the shaft well wall from the bottom of a shaft (17) at a certain distance upwardly, and the peripheral bubble curtain generation pipe and the middle reinforcing bubble curtain generation pipe are communicated with a high pressure air supply pipe (14), water is injected to the bottom of the shaft well along the well wall from a lowest middle driftway (1) of the installed or used shaft, a mine high-pressure air supply pipe supplies air to the peripheral bubble curtain generation pipe (12) of each layer, and the reverse digging penetration rock column (10) to be exploded at the last time is exploded at the end. The damage to the shaft equipment at the bottom of the installed or used shaft on a large scale by the explosion flyrocks and air shock waves of the last explosion can be prevented when the shaft well extends and the reverse digging penetration is carried out, and the phenomenon that the detachment and reinstallation of the damaged shaft require that the mine needs to stop operation for a long time before and after the reverse digging penetration is carried out during the extension of the shaft can be prevented.