Abstract: Disclosed is a coated rubber particle, preparation thereof and its application as a plugging material in drilling fluids. The coated rubber particle comprises a rubber core and a coating layer, wherein the core has a fluorine content (at %) of 0-15%, the coating layer has a fluorine content (at %) of 30-80%, and the coated rubber particle has a 24-hour oil absorption rate of 4% or less. The coated rubber particle has good oil resistance, and is particularly suitable for use as a plugging material in drilling fluids, particularly oil-based drilling fluids.

Abstract: The present invention provides a foot frame bottom plate type fixed part, a sealed inner lining structure, an underground chamber, belonging to the field of compressed air energy storage technology. The skeleton includes a fixed bottom plate and an umbrella shaped tripod, which is equipped with a connecting part and an umbrella shaped part. The umbrella shaped part is set at the top of the connecting part. The umbrella shaped tripod is fixedly connected to the fixed bottom plate in the length direction, forming a semi open containment space clamp. The sealing inner lining structure includes an airtight layer and a foot rest bottom plate shaped fixed part. The underground chamber includes a concrete lining layer and a sealed lining structure. Its construction period is shorter than that of welded steel plates, and the cost is lower.

Abstract: The present invention provides a groove-type skeleton, a sealed lining structure, an underground gas storage, which belong to the technical field of compressed air energy storage. The groove-type skeleton includes a fixed bottom plate, which has a length direction and a width direction. The fixed bottom plate forms a semi-open receiving space along the length direction at the middle axis, and the top edge of at least one side of the semi-open receiving space extends inward to form a protrusion. The sealed lining structure includes an airtight layer and the groove-type skeleton. The underground gas storage includes a concrete lining layer and the sealed lining structure. The groove-type skeleton can be combined to form a sealed lining structure, which forms an underground gas storage. Its construction period is shorter than that of welded steel plates and its cost is lower.

Abstract: Provided are an electrokinetic device and method for in-situ leaching of uranium. The electrokinetic device for in-situ leaching of uranium includes an injection well, a pumping well, a positive electrode, a negative electrode, leaching solution, and a direct current power supply. Uranium ore is provided between the injection well and the pumping well, the negative electrode is arranged in the injection well, and the positive electrode is arranged in the pumping well. The leaching solution is injected from the injection well, flows through the uranium ore, and then is pumped from the pumping well for uranium extraction. The direct current power supply is respectively connected to the positive electrode and the negative electrode, and is configured to apply direct current between the positive electrode and the negative electrode to promote the pooling of uranium-carrying ions towards the pumping well.

Abstract: Provided are an electrokinetic device and method for in-situ leaching of uranium, belonging to the technical field of in-situ leaching of uranium. The electrokinetic device for in-situ leaching of uranium includes an injection well, a pumping well, a positive electrode, a negative electrode, leaching solution, and a direct current power supply. Uranium ore is provided between the injection well and the pumping well, the negative electrode is arranged in the injection well, and the positive electrode is arranged in the pumping well. The leaching solution is injected from the injection well, flows through the uranium ore, and then is pumped from the pumping well for uranium extraction. The direct current power supply is respectively connected to the positive electrode and the negative electrode, and is configured to apply direct current between the positive electrode and the negative electrode to promote the pooling of uranium-carrying ions towards the pumping well.

Abstract: An automatic righting system includes a discrimination calibration module, a righting module, and a controller. The discrimination calibration module includes a distance sensing unit. The distance sensing unit is located at the front end of the glasses and configured to acquire the distance between the distance sensing unit and a first feature position. The righting module includes a push-up air cushion. The push-up air cushion is mounted at the front end of the glasses. The push-up air cushion is configured to be inflated to push the glasses to move upward. The controller is electrically connected to the distance sensing unit and the push-up air cushion. The controller is configured to control the push-up air cushion to start or stop to right the glasses according to a distance signal of the distance sensing unit.

Abstract: The disclosure provides a method of continuous dyeing with reactive dyes in wet conditions, the method including: 1) adding fabric to a mixture of a dye liquor and an alkali through a one-bath-one-step method; 2) immersing the fabric pretreated in 1) in a padding liquor with an air film horizontal pad dyeing machine; 3) preheating the fabric after being treated in 2) at a temperature of 50-90° C.; and 4) rolling and batching the fabric after being treated in 3) at a temperature of 10-70° C. for 2-72 hours.

Abstract: Disclosed is a coated rubber particle, preparation thereof and its application as a plugging material in drilling fluids. The coated rubber particle comprises a rubber core and a coating layer, wherein the core has a fluorine content (at %) of 0-15%, the coating layer has a fluorine content (at %) of 30-80%, and the coated rubber particle has a 24-hour oil absorption rate of 4% or less. The coated rubber particle has good oil resistance, and is particularly suitable for use as a plugging material in drilling fluids, particularly oil-based drilling fluids.

Abstract: A water damping device includes a steel frame and a water-blocking cup; the device is immersed in the water and connected under the main bridge girder by wire ropes. One end of the water-blocking cup is provided with a blocking ring and a cover. The water-blocking cup cover is mounted between the cup and the blocking ring and is movably connected to the water-blocking cup. The blocking ring is used to prevent the water-blocking cup cover from opening towards the outside of the cup; an array of water-blocking cups is mounted on the steel frame along the downward direction of the water-blocking cup cover.

Abstract: An apparatus for self-generating power with two magnets at two ends and a wireless switch using same are provides, and which belong to the field for self-generating power. The apparatus for self-generating power with two magnets at two ends of the present disclosure includes a coil assembly and a permanent magnet assembly. The permanent magnet assembly includes a left permanent magnet, a right permanent magnet and a soft magnetic frame, wherein the coil assembly includes a coil and a soft magnetic plate, and the soft magnetic plate is arranged between the left permanent magnet and the right permanent magnet in an up-down rotation manner.

Abstract: An apparatus for self-generating power and a wireless switch applying same are provided. The apparatus includes a coil assembly and a permanent magnet assembly. In an initial state, left and right ends of a soft magnetic plate come into contact with a first permanent magnet and a second upper soft magnetic plate respectively to form a first closed magnetic circuit, when the soft magnetic plate is rotated relative to the permanent magnet assembly, the left and the ends of the soft magnetic plate come into contact with a first upper soft magnetic plate and a second permanent magnet respectively to form a second closed magnetic circuit, and a direction of a magnetic line of force passing through the soft magnetic plate in the first closed magnetic circuit is opposite to that of a magnetic line of force passing through the soft magnetic plate in the second closed magnetic circuit.

Abstract: A water damping device includes a steel frame and a water-blocking cup; the device is immersed in the water and connected under the main bridge girder by wire ropes. One end of the water-blocking cup is provided with a blocking ring and a cover. The water-blocking cup cover is mounted between the cup and the blocking ring and is movably connected to the water-blocking cup. The blocking ring is used to prevent the water-blocking cup cover from opening towards the outside of the cup; an array of water-blocking cups is mounted on the steel frame along the downward direction of the water-blocking cup cover.

Abstract: The present invention discloses a pollutant generation system. The pollutant generation system includes a pollution source and a pollutant emitter. The pollutant emitter is connected to the pollution source. The pollution source is composed of two gases including air and methane. The flows of the gases are strictly controlled. Then, the gases enter a magnetic bead glass bottle. Due to the disturbance of magnetic beads to the flowing of the gases, the gases are sufficiently disordered, and the two gases are sufficiently mixed by using a spiral tube to generate a uniform and stable pollution source.

Abstract: An apparatus for self-generating power with two magnets at two ends and a wireless switch using same are provides, and which belong to the field for self-generating power. The apparatus for self-generating power with two magnets at two ends of the present disclosure includes a coil assembly and a permanent magnet assembly. The permanent magnet assembly includes a left permanent magnet, a right permanent magnet and a soft magnetic frame, wherein the coil assembly includes a coil and a soft magnetic plate, and the soft magnetic plate is arranged between the left permanent magnet and the right permanent magnet in an up-down rotation manner.

Abstract: An apparatus for self-generating power and a wireless switch applying same are provided. The apparatus includes a coil assembly and a permanent magnet assembly. In an initial state, left and right ends of a soft magnetic plate come into contact with a first permanent magnet and a second upper soft magnetic plate respectively to form a first closed magnetic circuit, when the soft magnetic plate is rotated relative to the permanent magnet assembly, the left and the ends of the soft magnetic plate come into contact with a first upper soft magnetic plate and a second permanent magnet respectively to form a second closed magnetic circuit, and a direction of a magnetic line of force passing through the soft magnetic plate in the first closed magnetic circuit is opposite to that of a magnetic line of force passing through the soft magnetic plate in the second closed magnetic circuit.

Abstract: The invention relates to the field of passive power generation devices, in particular to a toggle-type magnetic power generation device, which comprising a coil, a magnetic core, a coil bobbin and a coil support. A through groove allowing the magnetic core to penetrate through is formed in the coil bobbin. The coil is wound around the outer surface of a side wall of the through groove and corresponds to the magnetic core. An opening allowing part of the coil bobbin to be embedded therein is formed in the coil support. The opening is formed in the coil support and allows part of the coil bobbin to be embedded therein, so that the number of turns of the coil is increased under the precondition of maintaining the existing size, thus improving the power generation capacity and the stability of the electrical performance of the magnetic power generation device.

Abstract: The disclosure provides a method of continuous dyeing with reactive dyes in wet conditions, the method including: 1) adding fabric to a mixture of a dye liquor and an alkali through a one-bath-one-step method; 2) immersing the fabric pretreated in 1) in a padding liquor with an air film horizontal pad dyeing machine; 3) preheating the fabric after being treated in 2) at a temperature of 50-90° C.; and 4) rolling and batching the fabric after being treated in 3) at a temperature of 10-70° C. for 2-72 hours.

Abstract: The invention discloses a retrievable sand consolidation anchor head prestressed anchor rod, an anchoring jack and an application method thereof, and belongs to the technical field of geotechnical engineering. The retrievable sand-consolidated anchor head pre-stressed anchor includes a bolt body 6, a rigid frame 5, a load member 1, a sand column 2, a pressure receiving member 4, a cut-off member 3, and an anchor pier 8. The anchoring jack includes a force transmitting frame 12, a first guiding plate 25, a second guiding plate 28, and a housing 13. The application method includes an anchoring method using the retrievable sand-consolidated anchor head prestressed anchor rod and a method of recovering the retrievable sand-consolidated anchor head pre-stressed anchor rod. After the anchoring of the reclaimed sand-consolidated anchor head pre-stressed anchor rod, the bolt body can be recovered and reused, and the operation is simpler and more environmentally friendly.

Abstract: The present invention discloses a pollutant generation system. The pollutant generation system includes a pollution source and a pollutant emitter. The pollutant emitter is connected to the pollution source. The pollution source is composed of two gases including air and methane. The flows of the gases are strictly controlled. Then, the gases enter a magnetic bead glass bottle. Due to the disturbance of magnetic beads to the flowing of the gases, the gases are sufficiently disordered, and the two gases are sufficiently mixed by using a spiral tube to generate a uniform and stable pollution source.

Abstract: The invention discloses a retrievable sand consolidation anchor head prestressed anchor rod, an anchoring jack and an application method thereof, and belongs to the technical field of geotechnical engineering. The retrievable sand-consolidated anchor head pre-stressed anchor includes a bolt body 6, a rigid frame 5, a load member 1, a sand column 2, a pressure receiving member 4, a cut-off member 3, and an anchor pier 8. The anchoring jack includes a force transmitting frame 12, a first guiding plate 25, a second guiding plate 28, and a housing 13. The application method includes an anchoring method using the retrievable sand-consolidated anchor head prestressed anchor rod and a method of recovering the retrievable sand-consolidated anchor head pre-stressed anchor rod. After the anchoring of the reclaimed sand-consolidated anchor head pre-stressed anchor rod, the bolt body can be recovered and reused, and the operation is simpler and more environmentally friendly.