42results about How to "Expansion is effective" patented technology

An embodiment of the invention provides a merchant expansion method. The method comprises the steps of acquiring geographic position information of multiple users; acquiring geographical position information of multiple merchants; according to the geographic position information of the users and the geographic position information of the merchants, determining a thermodynamic value of an area formed by at least one of pre-divided geographical fences; and when the thermodynamic value is larger than or equal to a preset threshold value, determining the area as an area suitable for merchant expansion. By means of the method, a service can be helped to more effectively expand out effective merchants.

The invention relates to a branch vessel expanding double-balloon support provided with side holes. The branch vessel expanding double-balloon support comprises an expandable compression support and a double-balloon structure in the expandable compression support, and the double-balloon structure comprises a main branch balloon and a side branch balloon; the expandable compression support comprises two parts which are connected and different in outer diameter, and the two parts, different in outer diameter, of the expandable compression support are arranged in parallel and comprise the main vessel opening part and the main vessel and branch vessel opening part; in addition, the main branch balloon is longer than the side branch balloon and intersects with the side branch balloon, and the length of the side branch balloon stops at the starting position of the support with the smaller outer diameter; the side holes parallel to the long axis direction of the supports are formed in the outer diameter changing position, and the diameter of the side holes is slightly larger than the diameter of the side branch balloon catheter. Markers corresponding to the side holes in position are arranged at the far end of the side branch balloon. The balloon support can expand the main branch and side branch vessels at the same time and is convenient to use and easy to operate.

The invention discloses a cable sealing device, and belongs to the field of cable installation. The cable sealing device comprises: an expandable inner ring mechanism, an expandable outer ring mechanism and a connecting ring which are concentric; the outer circumferential wall of the expandable inner ring mechanism is in seal connection with the inner circumferential wall of the connecting ring, the inner circumferential wall of the expandable outer ring mechanism is in seal connection with the outer circumferential wall of the connecting ring, the expandable inner ring mechanism is hooped ona cable, and the expandable outer ring mechanism is used for abutting against the inner circumferential wall of a cable penetrating hole. The cable sealing device provided by the embodiment of the invention can adapt to gap sealing between cables with different sizes and cable through holes with different sizes, and is simple and convenient to construct.

The invention discloses a trawl-net net-bag selective testing device which comprises a fishing boat, struts, a plurality of test trawl nets and a plurality of underwater cameras, the struts are laterally installed on the sides of the fishing boat; the test trawl net comprises warps, cross ropes, a net body, a test net bag and a cover net, the net openings of the net body are connected to one endsof the warps by the cross ropes, the other ends of the warps are fixed on the struts, the net opening of the test net bag is sutured with the edge of the tail outlet of the net body, the tail outlet of the test net bag is tightly closed by a first bundle rope, the cover net sleeves outside the test net bag, the edge of the opening of the cover net is sutured with the tail of the net body, the tailoutlet of the cover net is tightly closed by a second bundle rope, the plurality of test trawl nets are laterally distributed, and underwater cameras are installed at the net openings of the net body. The trawl-net net-bag selective testing device can realize the test fishing of the multiple sets of test net bags at the same time, and overcomes the problems of a cover net method and a comparativeoperation method.

The invention relates to a carbon material low-temperature expansion method and a preparation method of low-temperature desulphurization and denitration agent for the same, in particular relates to a carbon material ultrasonic acid low-temperature expansion method and a method for preparing low-temperature desulphurization and denitration agent by means of ultrasonic activation by taking the carbon material as a carrier. The invention can be used for overcoming the defects in the existing technology, and provides an ultrasonic acidizing expansion method for expanding the carbon material quickly and efficiently under low temperature, and a quick, efficiency and energy-saving ultrasonic activation preparation method for preparing the low-temperature desulphurization and denitration agent by using the carbon material expanded by the method above. In the preparation method, one or mixture of hydrogen nitrate, sulfuric acid and hydrochloric acid with certain concentration is used as acid treatment agent, by assistance of ultrasonic waves, the carbon material, such as coke or half coke, is subjected to low-temperature acid treatment, after the porous carbon material is treated by acid treatment, vanadate catalyst is loaded on the carbon material, thus, a flue gas desulphurization and denitration agent is prepared. The product can effectively remove SO2 and NOx in the flue gas under low temperature.

The invention discloses a protective device for protecting a floating platform on the sea, which comprises a floating platform, and a threaded connection port is fixedly fixed on the outside of the floating platform. The beneficial effects of the present invention are: the new protective device is provided with an anti-collision ring, the anti-collision ring is connected with the main body of the outer ring and provided with a special buffer device, the buffer device can prevent the ship from colliding with the floating platform to generate a buffer thrust, so that the impact force Scattered processing effectively blocks the collision of ships and causes a large damage to the floating platform. The outer ring platform needs to be provided with a channel that can accommodate ships and other navigation at a certain distance, the height, width and draft of the channel, etc. It can be adjusted according to the needs. When ships and other sailing ships need to pass, the mobile mechanism designed inside the floating platform can control the floating platform to expand and contract freely, and then play the function of freely adjusting the angle, so that the functions of the floating platform are diversified. Can cause the passage traffic of ship to be restricted because of the buoyancy block of setting.

Provided is a freezing apparatus, which is constituted to make the inlet quantity of a coolant of an expansion mechanism variable while recovering the energy of a high-pressure coolant as a power to the maximum by the expansion mechanism. The expansion mechanism (50) is equipped with two rotary mechanism units (70 and 80) having displacements made different from each other. These rotary mechanismunits are connected in series, and the rotary mechanism unit of the smaller displacement has two inlet ports (55 and 56) formed in its cylinder (71). Inlet pipes (24 and 27), as connected to the inlet ports (55 and 56), are equipped with a front throttle valve (60) and a switch valve (61). A bypass pipe (65) for bypassing the expansion mechanism (50) is equipped with a bypass valve (66). These valves (60, 61 and 66) are controlled to attain a balance between the coolant circulation rate of the expansion mechanism (50) and the coolant circulation rate of a compression mechanism (40).

The invention discloses a novel gynecological operation auxiliary system. The novel gynecological operation auxiliary system comprises a uterus expanding module, a camera shooting module, surgical instruments and a software and hardware supporting module, wherein the uterus expanding module comprises a plurality of expanding wires, an inner tube, an outer sheath tube and a tee joint, the camera shooting module comprises a fixing frame, a camera and a cleaning spray nozzle, the software and hardware supporting module is used for displaying images in the operation process in the whole journey and used for information collection and file storage, the fixing frame is installed on the expanding wires of the uterus expanding module, the camera is connected with the software and hardware supporting module, and the surgical instruments penetrate through the inner tube and the tee joint to enter the uterine cavity. The novel gynecological operation auxiliary system systematically solves a series of problems of uterine cavity expansion, visual operations, information and file storage and the like in the gynecological operation.