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534results about How to "Increase input" patented technology

Hydraulic jacking automatic welding inverted construction method of large-sized storage tank

ActiveCN101890583AIncrease inputOvercoming the disadvantages in the process of making securityDomestic vesselsWelding apparatusCalculation methodsWall plate
The invention relates to a hydraulic jacking automatic welding inverted construction method of a large-sized storage tank, which is safe, reliable and advanced. The welding quality of a tank body can satisfy standard requirements and overcomes the defects of more work high above the ground of a forward-erection method of the large-sized storage tank, large input quantity of a large-sized crane, and the like. The method comprises the following steps of: prefabricating a bottom plate, a wall plate, a floating roof and accessories; installing and welding a tank bottom plate; installing a hydraulic jacking device; installing tracks of a horizontal welding machine; welding butt seams and longitudinal seams of a top wall plate group; installing a tank top; lifting the wall plate; welding the wall plate, a surrounding plate and longitudinal seams; welding ring seams; installing a top wall plate; and welding an edge plate. The invention mainly reforms a 'submerged-arc longitudinal welding machine' of the 'forward-calculation method' from a 'hanging type' into a 'track type' in order to adapt to a 'reversed method'. The invention adopts a one-side welding double-side forming technology and adopts the 'reversed method' to overcome the disadvantages of a 'forward-erection method installing process of the large-sized storage tank.
Owner:陕西化建工程有限责任公司

Wide-range bidirectional conversion circuit and control method

The invention discloses a wide-range bidirectional conversion circuit and a control method. The wide-range bidirectional conversion circuit comprises a three-stage bidirectional converter and a control unit, and the three-stage bidirectional converter is formed by sequentially connecting a non-isolated DC/DC converter, an isolated DC/DC converter and a DC/AC inverter. When the system works in theforward direction, a direct-current power supply or energy storage equipment realizes grid-connected energy feedback through the non-isolated DC/DC converter, the isolated DC/DC converter and the DC/AC inverter; and during reverse working, an alternating voltage supplies power to a direct-current load or charges an energy storage device through a rectifying circuit, the isolated DC/DC converter and the non-isolated DC/DC converter. In order to adapt to different power levels and realize higher input current ripple control, the non-isolated converter adopts a multi-phase interleaved parallel structure; and in order to further broaden the requirements of input and output ranges in practical application, the isolated converter can be controlled by adopting a full-bridge/half-bridge variable structure. The whole system has the advantages of wide input direct-current voltage range, wide output alternating-current voltage range, wide load range, small current ripple, high-frequency isolation, high efficiency, energy conservation, environmental protection and the like.
Owner:NANJING UNIV OF AERONAUTICS & ASTRONAUTICS

Micro-needle transdermal delivery patch with high penetration efficiency

The invention relates to a micro-needle transdermal delivery patch with high penetration efficiency, and belongs to a medicament and equipment integrated patch product. The micro-needle transdermal delivery patch can painlessly and efficiently deliver medicament waiting delivery matters to the subcutaneous part, and achieves treatment, beautifying and health-care effects. In addition, under the stimulation of external force, heat, light, electricity, magnetic field, electric field and the like, the penetration effect can be accelerated, so that the micro-needle delivery patch has a curative effect which is not achieved in a common medicinal patch, the application range of the medicinal patch is expanded, and the curative effect of medicaments are improved. The invention relates to the structural design of the novel micro-needle transdermal delivery patch and the core technology of the implementation process, and the patch can be used for treating skin and shallow skin diseases and can also be used for treatment and related nursing operation of deep tissues and endocrine system diseases. The micro-needle delivery patch product conforms to the tide of future medical treatment, really realizes the advanced treatment concepts of painless delivery and happy treatment, is a novel patch product, and particularly has a broad market prospect for special crowds such as old people and children.
Owner:JILIN UNIV
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