45results about How to "Strong extension" patented technology

The invention relates to a system for underground communication and staff monitoring based on a TD-LTE technology. The system comprises mobile terminals, a relay station, a communication base station, a location server, a switchboard, a core network device, host computers, and transmission lines. The mobile terminals and underground base station nodes and the location server are connected with each other through wireless interfaces, and trinity communication monitoring environment is formed. The switchboard gathers a plurality of underground base station nodes through optical fibers, and connects the gathered underground base station nodes with a ground base station. The ground base station accesses a public switched telephone network through the core network device. Main transmission channels of the system uses wired optical fibers. Wireless channel uses an orthogonal frequency-division multiple access technology and a multiple-input multiple-output modulation technology. An original underground monitoring positioning algorithm is improved by using a mixed measurement mode of signal transmits-receive time measurement and angular measurement. Information of underground staff positions is obtained by using a circle coordinate setting method. The improved system and algorithm effectively solves problems of difficulties of high quality communication and monitoring positioning under complex and harsh conditions in mines.

The invention discloses a method for power distribution network state estimation on the basis of an SG-CIM model. The method comprises the steps of analyzing packets related with a power distribution network topological structure in the SG-CIM model, main categories and relations between the categories; splicing a major network, a power distribution network and a user topological model to obtain a complete power distribution network topological model; obtaining real-time data information of the power distribution network, performing pre-processing on real-time data according a state estimation algorithm to meet the state estimation requirements; enabling the expansion of a power distribution network state estimation model to meet various functional requirements of state estimation calculation, and performing state estimation. The problem of difficulty in power distribution network state estimation models and data sources is solved, and plenty of manpower and material resources are saved.

The invention relates to a pavement construction material and a pavement construction method, in particular to a cold-mixed asphalt mixture for a super-viscous fiber wear layer and a preventive maintenance method for an asphalt pavement. The composition and mass percentage of the ultra-viscosity fiber wearing layer cold mix asphalt mixture of the present invention are: polymer modified emulsified asphalt (9-15)%, aggregate (75-80)%, filler (0.5-3)% , fiber (0.1~0.3)%, rubber powder (0~3)%, water (5~10)%, the total amount is 100%. The material of the invention has good wear resistance, adhesion and water resistance, strong anti-crack ability of the construction road surface, good stability and convenient construction.

The invention discloses an optimizing method for pelletizing production integrating a chain-and-grid conveyer, a rotary kiln and a circular cooler which are triune. Based on material and heat exchange inside single equipment and among the three devices, heat supply and distribution of the chain-and-grid conveyer, the rotary kiln and the circular cooler are optimized online by adopting a technology of combining a mathematic model and expert control. The mathematic model is a triune heat and mass transfer model. A coupling relationship among a chain-and-grid conveyer model, a rotary kiln model and a circular cooler model is considered in construction. The heat and mass transfer model is applied to a pelletizing production process, so that the production process is transparent. Parameter control in the production process is carried out by adopting an expert control rule library, thereby optimizing the production process.

The invention discloses diverse satellite-borne electronic equipment in a parallel system. Communication topology of the system is achieved through double buses, and bridging of the two buses and information interaction between the two buses are completed through a communication module; function modules of the first type are connected with the first bus through a master-slave parallel framework, a symmetric parallel framework or a cluster parallel framework and are communicated with the first bus in a flow control mode; the flow control mode includes that the data communication process is divided into a plurality of layers of the processing streamline process responding layer by layer according to data sources, data hosts and data processing; the second bus is maintained through an auxiliary controller, data from function modules of the second type are collected independently in advance, the data are stored in an off-chip extended memory, and the function modules of the second type are maintained periodically. A layering time multiplexing system storage structure is achieved through on-chip storage resources and the off-chip extended memory.

The invention discloses a water-blocking medium-voltage power cable employing aluminum-scandium alloy conductors. A wire core of the cable comprises three power wire cores, wherein each power wire core is formed by sequentially arranging a power wire core conductor shielding layer, a power wire core insulating layer and a power wire core metal shielding layer outside a power wire core conductor; a water-blocking tape lapping layer, an aluminum-plastic tape longitudinal wrapping layer, a galvanized steel strip armor layer and a polyvinyl chloride sheath are sequentially arranged outside the three power wire cores; and the space between the three power wire cores and the water-blocking tape lapping layer is filled with a water-blocking filling strip. The aluminum-scandium alloy conductors are adopted as the power wire core conductors, so that, on one hand, a plurality of disadvantages when pure aluminum is adopted as the wire and cable conductors are avoided, and the water-blocking medium-voltage power cable has the advantages of creep resistance, high flexibility, high ductility, low resilience, connection stability, good water-blocking property and the like; and on the other hand, the cost of the cable is also reduced by 50%.

The invention relates to a method for preparing no-solvent green styrene-series cation exchange resin and belongs to the field of preparation of cation exchange resin. A crosslinking agent is adoptedto improve the elasticity and the pressure resistance of a styrene resin framework; a secondary polymerization method is adopted to increase the strength of the frameworl; high-concentration sulfuricacid is adopted to quicken a reaction and to improve the efficiency; and a multi-gradient concentration step-by-step acid nesting method to reduce intense heat release of sulfuric acid during cleaning. Disadvantages of a process which adopts dichloroethane as a swelling agent for a synthetic reaction are avoided, resin with the same performance and indexes as ion exchange ion which is prepared bynot taking dichloroethane as the swelling agent, and owing to frequent use of a water phase, environmental pollution of the water phase can be reduced. Resin prepared by the method is a dichloroethane-residue-free green product, and can be more deeply applied to industries including drinking water, food, medicines and the like.

The embodiment of the invention discloses a metadata-based comprehensive energy integrated e-CIM model design method, which comprises the following steps: constructing an energy network e-CIM topologymodel; expanding the energy network e-CIM topology model based on metadata; designing an interface of the energy network e-CIM topology model; and designing classes and association classes of the energy network e-CIM topology model. The embodiment of the invention has the following advantages: the problem of the integrated model of the comprehensive energy ''source network charge storage'' is solved, the interoperability of the system is improved, the data interface standard is unified, a large amount of manpower and material resources are saved, the blank of the public information model in the multi-energy synergistic complementary application is well filled, and the method has great practical significance.

The invention discloses a medium-voltage rubber jacketed flexible cable for offshore wind power generation, and belongs to the field of electric wires and cables. The medium-voltage rubber jacketed flexible cable comprises a cable core, a water-blocking wrapping tape and an outer sheath; the water-blocking wrapping tape wraps the outer side of the cable core; the outer sheath wraps the outer sideof the water-blocking wrapping tape in an extrusion mode; the cable core is formed by twisting three power wire cores and a water-blocking filling strip; the center in each power wire core is filled with a conductor; the outer side of each conductor is wrapped with a conductor shielding layer; an insulating sleeve wraps the outer side wall of each conductor shielding layer in an extrusion mode; aninsulating shielding layer wraps the outer side of each insulating sleeve; and a metal shielding layer wraps the outer side of each insulating shielding layer. The scandium-aluminum alloy conductorsare adopted, so that the defect that pure copper is used as electric wire and cable conductors is effectively overcome, the cost of the cable is reduced, the structural strength, the elongation, the tear resistance and the like of the cable core are effectively improved, and the defect that a traditional cable is poor in bending performance is overcome; and the cable is effectively suitable for medium-voltage cables and is convenient to popularize for a long time.

The invention belongs to the field of technical processing and application of ocean resource natural products and in particular relates to a preparation for improving antibacterial performance of a sanitary napkin and an antibacterial method of the preparation. The preparation comprises a main material or a main material and auxiliary materials, wherein the main material is chitosan; the auxiliarymaterials are fish collagen or fish collagen and glycerinum; the molecular weight of the chitosan is 10-2000KDa; and the degree of deacetylation is 80-100%. The preparation provided by the inventionis low in price, small in amount, safe and convenient, free of toxic or side effect and small in product cost influence, the antibacterial performance of the sanitary napkin can be greatly improved, and original absorption performance and flexibility of the sanitary napkin are not changed.

The invention discloses a safe and rapid electric heating device, comprising a heat conduction pipe and an electric heating wire. The electric heating wire is spirally wound on the outer wall of the heat conduction pipe; the heat conduction pipe is an aluminum alloy pipe; a layer of a sulfuric acid anode oxide film is arranged on the surface of the outer wall of the aluminum alloy pipe; and the electric heating wire and the surface of the outer wall of the aluminum alloy pipe are in direct contact. The electric heating device provided by the invention has the advantages in that the electric heating wire can heat the aluminum alloy pipe through direct contact through the layer of the sulfuric acid anode oxide film arranged on the surface of the outer wall of the aluminum alloy pipe, so that the heating speed of the electric heating device can be effectively improved, and the use security of the electric heating device can be ensured.

The invention relates to a hydraulic connecting bush (10) for connecting hydraulic lines (52, 54, 73, 74, 92, 94) for hydraulic circuit-breaker drives (98), comprising a hollow cylindrical main body (12, 60, 77) having at least two annular grooves (14, 16, 62, 64, 78, 79), which extend circumferentially on the outer cylindrical surface of the main body and have sealing rings (18, 20, 66, 68, 80, 81) inserted therein, wherein the main body (12, 60, 77) is made of a material having a first modulus of elasticity. The hydraulic connecting bush (10) is designed to be inserted in an overlapping manner in hydraulic lines (52, 54, 73, 74, 92, 94) to be connected that are in contact with each other at end faces of the hydraulic lines, the hydraulic lines being made of a material having a second modulus of elasticity, wherein a gap is formed between the main body (12, 60, 77) and the hydraulic lines (52, 54, 73, 74, 92, 94), such that, if the modulus of elasticity of the first material is less than the modulus of elasticity of the second material and an internal pressure is applied, the main body (12, 60, 77) is expanded more greatly than the hydraulic lines (52, 54, 73, 74, 92, 94) and thus the gap provided for technical reasons is closed in the region of the sealing rings. The invention further relates to a hydraulic connection (50, 72, 96), comprising an aforementioned hydraulic connecting bush (10). And the invention further relates to a hydraulic connecting plug (100, 120) for closing an open hydraulic line (102).

The invention discloses a mobile monitoring type flexible cable with a low-smoke zero-halogen scandium-aluminum alloy conductor for a coal mine, relating to the technical field of cables. The mobile monitoring type flexible cable comprises an external protective jacket, power line cores and an internal protective jacket; the power line cores are formed by sequentially pressing and wrapping an insulating and shielding layer, an insulating layer and a conductor shielding layer; the internal protective jacket is woven with metal fibers added to a low-smoke zero-halogen rubber which uses ethylene-propylene diene copolymer as a base material; the three power line cores are stranded and are wrapped into a cable core by means of the internal protective jacket; a semiconductor wrapping layer, an insulating wrapping tape and the external protective jacket are arranged outside the cable core in sequence; and three monitoring line cores are equally distributed in the semiconductor wrapping layer along the circumferential direction of the cable. The cable is simple in design and good in flexibility; the conductor line core of the cable is not easy to break; the cable has the characteristics of being resistant in creep deformation, high in flexibility, strong in extension, low in rebounding, good in connection stability and good in conductivity; no toxic gas is released and the cost is reduced greatly.

The invention discloses a silvered steel tape shielded power cable, which comprises three groups of control wire cores, one group of grounding wire cores, a silvered steel tape armor layer, a silvered steel tape shielding layer, a silvered copper tape screened layer, a polyvinyl chloride insulating layer, a low-smoke halogen-free sheath layer and a polyvinyl chloride sheath layer, wherein each group of control wire cores comprise a silvered copper conductor, a butyronitrile insulating layer and a silvered copper wire shielding layer; and the group of grounding wire cores comprise another silvered copper conductor, another butyronitrile insulating layer and a galvanized copper wire shielding layer. The cable has the advantages of creep resistance, high flexibility, good water-proof capability and the like.

The weight proportion of the raw material in the alloy is: Al 98.17~98.75, Si 0.2~0.38, Mg 0.6~0.9, Fe 0.2~0.25. Cu 0.25~0.3, in which, Cu in it strengthens the hardness and extension power of the Al alloy tubes, Mg increases the plasticity and acid-resistant performance cracks do not appear on the turning arc of the tube by this invention.

The invention discloses an anti-interference scandium-aluminum alloy conductor control rubber sheathed flexible cable and belongs to the field of wires and cables. The anti-interference scandium-aluminum alloy conductor control rubber sheathed flexible cable comprises a cable core, a waterproof filling strip, a first waterproof wrapping tape, a metal braided shielding layer, a second waterproof wrapping tape, and an outer sheath. The outer side of the cable core is wrapped in the first waterproof wrapping tape. A gap between the inner side of the first waterproof wrapping tape and the outer side of the cable core is filled with the waterproof filling strip. The outer side of the first waterproof wrapping tape is wrapped in the metal braided shielding layer. The second waterproof wrapping tape is extruded on the outer side of the metal braided shielding layer. The outer sheath is extruded on the outer side of the second waterproof wrapping tape. The cable core is formed by intertwiningthree control wire cores. The cable core is formed by intertwining the control wire cores, thereby improving the overall structural toughness and strength of the cable core, avoiding the stressed fracture deformation during the use of the cable, improving the structural strength, the ductility and tear resistance of the cable core, solving the poor bending performance of a traditional cable, and facilitating long-time promotion.