30results about How to "Reduced high pressure requirements" patented technology

The invention relates to a deep sea reverse osmosis seawater desalination device. The device comprises a lifting device and a fresh water storage tank, wherein the lifting device and the fresh water storage tank are arranged on a semi-submersible ocean platform; the device body is arranged in an outer frame, and the outer frame is connected with the lifting device through a sling; the device bodyis immersed in seawater along with the outer frame and can be lifted along with the sling; the filter box of the device body is communicated with a seawater inlet main pipeline; a filter box, a waterinlet pump, a heating device and a reverse osmosis membrane element are sequentially connected with each other; the reverse osmosis membrane element is divided into three branches, a first branch is communicated with a fresh water tank, a second branch is communicated with a concentrated seawater discharge pipeline, and a third branch is communicated with a water return tank; the fresh water tankis connected with an air pipe which is communicated with the atmosphere; the fresh water tank is also connected with the fresh water storage tank through a high-pressure pump and a fresh water conveying pipeline. The device solves the problem of difficulty in maintaining and cleaning caused by placing devices in the deep sea; the device also solves the problems of low water yield and high water inlet pressure requirements caused by low seawater temperature, and increased cost caused by increase of the number of membrane elements.

The invention discloses a preparation method and a preparation device of natural gas hydrate with uniform high saturability in sediment. The device comprises a stable pressure gas supply module, a constant pressure liquid supply module, an automatic control module and a data acquisition and processing module, wherein a reaction kettle consists of an inner kettle body and an outer kettle body; the inner kettle body is filled with sediments; solutions are filled in a cavity which is formed between the two kettle bodies and are uniformly dispersed into the sediment through micropores in the peripheral wall surfaces of the inner kettle body under the constant pressure condition. According to the preparation method and the preparation device, the pressure in the kettle body and the supplement of the solutions are continuously and stably controlled by using a constant pressure automatic control system, and the sediment system with high saturability of the hydrate can be prepared so as to lay a reliable experiment foundation for natural gas hydrate reservoir exploitation in the simulated natural world.

The invention relates to a large size gallium oxide single crystal Czochralski growing method under the normal pressure. The method includes 1, drying gallium oxide powder in vacuo, removing the adsorbed water, pressing to form material blocks, and obtaining gallium oxide blanks; 2, selecting gallium oxide seeds < 010> < 100> or < 001& gt; orientating the seeds, cutting, cleaning through ultrasonic and drying; filling a crucible of a crystal growth furnace with the gallium oxide blanks, evacuating till (1-3) * 10-4Pa, and injecting 1% oxygen and 99% carbon dioxide gas of one atmospheric pressure; heating and melting the gallium oxide blanks by the medium frequency induction heating manner, necking, shouldering, performing constant diameter growth, ending, extracting crystal, and obtaining the large size gallium oxide single crystal. The method adopts mixed gas with proper ratio, an after heater adaptive to the crucible and a heat insulation system, crystal beta-Ga2O3 can grow in a sealed system under the normal pressure, and volatilization and decomposition of the gallium oxide during the growth of the crystal are overcome.

The invention relates to a fire-extinguishing rescue method of building. The method comprises that: 1, fine water mist fire-extinguishing equipment is arranged above the building, is connected with a water supply pipe, and is connected with one or a plurality of pipe winding devices or electric pipe winding devices through a glue pipe, the pipe winding devices or electric pipe winding devices are connected and wound with the glue pipe, and the glue pipe extends out from the pipe winding devices or electric pipe winding devices and is directly connected with a fire-extinguishing spray gun or nozzle or is connected with the fire-extinguishing spray gun or nozzle through a connection part; 2, rescue workers are at the lower floor of the building or the external portion of the building, press the controller or pull the control rope so as to control the fire-extinguishing spray gun or nozzle arranged on the roofing to descend onto the target position along the external wall of the building; and 3, the personnel at the firing floors the descending fire-extinguishing spray gun or nozzle to perform fire extinguishing or ventilation through the external opening of the external wall of the building.

The invention relates to a building, wherein fine water mist fire-extinguishing equipment is arranged above the building, is connected with a water supply pipe, and is further connected with a glue pipe, the glue pipe is wound on a pipe winding device or electric pipe winding device, extends out from the pipe winding device or electric pipe winding device, and is connected with a fire-extinguishing spray gun or nozzle, a controller or control rope is arranged on the lower floor of the building or the external portion of the building, and the controller is started or the control rope is used so as to control the fire-extinguishing spray gun or nozzle to descend from the position above the building along the external wall of the building.

Disclosed is a building. Water mist fire extinguishing equipment and rope falling equipment are arranged on the building. The water mist fire extinguishing equipment comprises an electric hose coiling device or a non-electric hose coiling device and a hose, wherein the hose is wound on one or more electric hose coiling devices or non-electric hose coiling devices, extends from the electric hose coiling devices or the non-electric hose coiling devices, is directly connected with a fire gun or sprayer or connected with the fire gun or sprayer through a connector and is arranged on the rope falling equipment. On the lower floor of the building or outside the building, the fire gun or sprayer can be controlled to move out and fall down along the outer wall of the building. A deflection pulley or deflection pulling ring or deflection pulling rope or deflection roller are arranged on the lower portion of the building.

The invention discloses a building. A water mist fire extinguishing device is arranged above the building. The water mist fire extinguishing device comprises a pressurization device, an electric winder and a rubber tube. The rubber tube winds the electric winder, extends out of the electric winder, is connected to a fire extinguishing spray gun or a nozzle and is arranged above the building. Through use of a controller 1 or a control rope 1 and use of a controller 2 or a control rope 2, the fire extinguishing spray gun or the nozzle can be controlled to fall off from the upper part of the building along the outer wall of the building and to inject a fire extinguishing material to an object of the building or carry out ventilation. The structure below the building or the ground below the building is provided with a deflection sheave or a deflection draw ring or a deflection draw rod or a deflection roller.

The invention relates to a building, wherein fine water mist fire-extinguishing equipment and rope descending equipment are arranged above the building, the fine water mist fire-extinguishing equipment is connected with a water supply pipe and is connected with one or a plurality of electric pipe winding devices through a glue pipe, the glue pipe is wound on the one or the plurality of the electric pipe winding devices, extends out from the electric pipe winding device, is connected with a fire-extinguishing spray gun or nozzle, and is arranged in the rope descending equipment, the fine water mist fire-extinguishing equipment, the electric pipe winding device and the rope descending equipment are connected with a control electric cable or control rope, the control electric cable or control rope extends downward to the position below the building or the external portion of the building, and that the fire-extinguishing spray gun or nozzle descends from the position above the building along the external wall of the building can be controlled on the position below the building or the external portion of the building.

Disclosed is a building. Water mist fire extinguishing equipment, a supporting platform and rope falling equipment are arranged on the building. The water mist fire extinguishing equipment comprises a fire gun. A pulley is arranged on the building or the rope falling equipment, a rope winds across the pulley and forms a pulling rope I and a pulling rope II on two sides of the pulley; the pulling rope I is directly connected with the supporting platform or connected with the supporting platform through a stay rope, and deflection sheaves or deflection rollers or deflection supporting parts are arranged on two sides of the supporting platform. A side of the supporting platform is connected with a traction rope. The front and rear sides of the fire gun are connected with deflection pulling ropes. On the lower floor of the building or outside the building, the pulling rope II, the traction rope and the deflection pulling ropes can be controlled to fall down and extend to the lower portion of the building.

The invention belongs to the preparation field of inorganic nanometer materials, and specifically relates to a method for preparing a ZrO2 nano particle with uniform particle size distribution and surface modified metal cations. The method comprises the steps of adding 30-50 millimole of alkali into an organic solvent without water; fully agitating; adding 5-10 millimole of zircon salt into the solution; agitating until complete dispersion to form a colloid; adding 0-10ml of oleic acid in droplets; placing the colloid in a stainless reactor with an inner polyfluortetraethylene lining; sealingwell; and placing the reactor in a constant temperature oven with the temperature of 120-180 DEG C for reaction for 24-36 hours, so as to obtain cubic phase ZrO2 nano particles at the lowermost layer.The prepared nano particles have particle size of 4.5nm or so, and narrow dispersion, can stably disperse in solvents, such as water, ethanol, etc. and have practical application value. The method has the advantages of simplicity, less time consumption, high yield, lower pressure in reaction process and suitability for industrialized production.