41results about How to "Low mechanical requirements" patented technology

The invention relates to an independent feathering control system and a control method for a wind driven generating set, wherein the control system comprises a sampling module, a control module and a driving module. A feathering motor in the driving module is connected with the blades of the wind driven generating set through a speed reducer. The sampling module is used to acquire the signals such as the wind driven generating set power, the boss rotating speed, the impeller position, the feathering angle, the paddle vibration, and the like, and to respectively send the acquired signals to the control module. The control module comprises a wind machine power controller for processing the wind driven generating set power signal and the boss rotating speed signal, a periodic unbalanced load compensation controller for processing the impeller position signal, the wind machine power signal and the boss rotating speed signal, a transient state impact load compensation controller for processing the feathering angle signal, the paddle vibration signal, the impeller position signal, the wind machine power signal and the boss rotating speed signal, and an output coupler for processing the signals outputted from the three controllers and comprehensively outputting the signals to the driving module.

Device for transporting containers in a packaging line, comprising a number of guide means such as a track, which determine a closed route comprising a horizontal stretch and upon which at least a first and second carrying element slide, characterised in that the guide means are directed on a vertical plane and in that each carrying element has two arms, each one of which extends to one side of said vertical plane, each arm (5a; 6a) of a carrying element being designed to work alongside the arm (5b; 6b) arranged on a same side of the vertical plane of the other carrying element adjacent to them, to jointly secure and transport at least one corresponding container, it therefore being possible for them to be secured and transported along the length of the horizontal stretch of said route and at least two containers between each two adjacent carrying elements at the same time, one at each side of the vertical plane.

The invention belongs to the field of chemical engineering technique and equipment, and particularly relates to a method for continuously producing polycarbonate by copolymerizing carbon dioxide and propylene oxide with a circulation flow reactor. The method comprises the following steps: introducing dry inert gas to replace atmosphere and remove water in the circulation flow reactor; adding propylene oxide, catalyst and carbon dioxide; copolymerizing the carbon dioxide and the propylene oxide under certain temperature and pressure to generate polycarbonate; and separating to obtain the aliphatic polycarbonate product, wherein the unreacted raw materials and gas are redistributed into the circulation flow reactor for cyclic utilization. The circulation flow reactor comprises a reactor shell, a raw material gas inlet, a gas distributor, a guide flow cylinder, a liquid feed port and a gas outlet, wherein a multilayer large-pore screen can be arranged in the guide flow cylinder, so that the circulating flow is divided into at least two stage when the pores of the guide flow cylinder wall are opened. The invention has the advantages of simple structure, low investment, good gas-liquid contact, good mass transfer, short time, high efficiency and the like, and is convenient to operate.

The invention discloses an imaging device and method based on the fly-eye lens optical structure. The fly-eye lens imaging principle based on bionics is combined with a variable space frequency characteristic extraction technology, an image of the object space is formed on the plane of a two-dimensional photoelectric sensor through a fly-eye lens, image processing is conducted through a space frequency conversion filtering module and a color continuous analysis module, then image information blending is conducted, and required image characteristics and images are output to achieve high performance photoelectric imaging. The imaging method is simple in photoelectric structure, easy to achieve, low in mechanical requirement, flexible in system construction, prone to extract and analyze characteristic information, high in data processing capability and prone to integration and function expansion.

The invention discloses a mobile shooting system and method, and belongs to the technical field of electric appliances, and the system comprises a communication device which is used for transmitting shooting information planned for a shooting object to a control device, wherein the shooting information comprises an initial position and a moving path of a mobile shooting device during shooting; a control device which is used for controlling the mobile shooting device to move to an initial position and shooting according to a moving path after the mobile shooting device receives a shooting instruction triggered by the outside, and controlling a monochromatic light source arranged in the mobile shooting device to carry out stroboflash according to a preset stroboflash mode so as to expose the mobile shooting device; a mobile shooting device which is used for performing each single-channel analog gain according to a preset circular exposure mode after receiving a shooting instruction so as to collect a black-and-white image shot by a shooting object; and an image processing device which is used for carrying out picture splicing on the acquired black and white images and carrying out similarity registration on the image of each channel to obtain a true color image with all-channel alignment. According to the invention, the resolution can be improved.

The invention relates to quick-mixing construction method based on prefabrication and assembly of a superposed type underground utility tunnel. The quick quick-mixing construction method based on prefabrication and assembly of the superposed type underground utility tunnel comprises the steps of zoning and segmenting an overall underground utility tunnel; excavating a foundation pit of the tunnel,and carrying out waterproof construction on a base layer and a bottom part; assembling prefabricated and assembled sections, and meanwhile, constructing reinforcing steel bars on cast-in-situ segments and carrying out template engineering construction; pouring and maintaining concrete; carrying out waterproof engineering construction; constructing a next zone: sequentially accomplishing the majorstructure construction of other tunnels in assembly zones according to the steps; and backfilling: backfilling the accepted tunnel structures until accomplishing the construction of the whole tunnel.According to the quick construction method, the underground utility tunnel is flow-process constructed in a zoning and segmenting way, each zone is divided into multiple flow-process operation areas, each flow-process operation area is further divided into a cast-in-situ segment and a prefabricated and assembled segment, and the advantages of the cast-in-situ construction technology and the prefabricated and assembled type construction technology are fully combined, so that the aim of effectively utilizing the construction operation surface for quick construction is achieved.

The invention relates to a module for converting solar radiation into electricity comprising: a panel (3) having a front (5) and a back (7) main side, with a solar energy converting means (11) arranged on or in the front main side and a means for fixing (15) the module to an object. In order to allow a mounting that prevents accumulation of dirt in the edge region of the panel the means for fixing (15) the module is furthermore arranged over the back (7) main side of the panel (3) and away from the edges (17a-17d) of the panel (3). The invention furthermore relates to a fixing device configured to receive such a module and to a combination of a module and a fixing device.

The invention relates to a piling device on water, which comprises a prestressed pipe for forming a pile, a pile cap arranged at the top end of the prestressed pipe, a hoop for fixing the pile cap and the prestressed pipe, and a vibration-capable A vibrating hammer, one end of the vibrating hammer has a first connecting portion connected to the pile cap, and the other end has a second connecting portion connected to the hanger. With the piling device of the present invention, during construction, it is only necessary to make a pile cap and a hoop according to the size of the pipe pile, use the hoop to fix the pipe pile and the pile cap, and then connect the vibrating hammer connected to the hanger to the pile cap , and finally the pipe pile is driven into the soil layer through the vibration of the vibrating hammer, the construction is simple, the speed is fast, the cost is low, and the mechanical requirements are relatively low.

The present invention relates to a device comprising a tubular drape for covering surgical equipment and furthermore comprising a container adapted to accommodate a substantial portion of the drape inan axially compressed state in a ring-shape, the container comprising a first sheet and a second sheet, wherein the first sheet and the second sheet are oppositely arranged, the first sheet having afirst opening and the second sheet having a second opening, wherein the first opening is configured for withdrawal of the drape from the container, and wherein the first and the second openings are configured for passing the surgical equipment to be covered therethrough, wherein the accommodated ring-shaped drape portion has a mechanical stiffness substantially contributing to the overall stiffness of the device. The present invention further relates to a method for manufacturing a device comprising a tubular drape and a container.

Unique systems, methods, techniques and apparatuses of a modular power transformer are disclosed. One exemplary embodiment is a matrix power transformer including a plurality of block assemblies eachincluding a plurality of transformer modules, each transformer module including a primary winding coupled to an input and a secondary winding coupled to an output, the inputs of each transformer module in one block assembly being coupled together and the outputs of each transformer block being coupled together. One of the secondary windings includes a plurality of taps structured to be selectivelycoupled to the output of the associated transformer module assembly or another secondary winding of the associated module assembly.

The invention belongs to the field of carbon nanomaterials, and particularly relates to a low-cost preparation process for preparing three-dimensional porous graphene. According to the invention, the selected carbon source takes the waste coal gangue as a basic raw material so that resource reutilization of the waste coal gangue is realized, materials can be saved, and energy consumption can be reduced. The metal catalyst is added, so that the graphitization process is accelerated, the graphite temperature is reduced, the graphitization degree is increased, the interlayer spacing is increased, intercalation is easier, and the quality of graphene obtained by stripping is higher. In-situ self-assembly is carried out by using a graphene oxide aqueous solution as a precursor, so that stacking among graphene sheet layers is effectively reduced, and excellent performance of graphene is retained. The three-dimensional porous graphene with relatively high quality is prepared by adopting a low-cost preparation process and a low-cost carbon source, and can be prepared in a large scale so that research and development of downstream products such as pollutant adsorption, resistance type gas sensors, lithium ion batteries, supercapacitors, modified cement concrete and the like are facilitated.

The invention discloses a construction method of a spherical crown-shaped space truss structure roof tile. According to a height and a span of an assembled spherical crown-shaped space truss structure, the surface of the assembled spherical crown-shaped space truss structure is divided into a plurality of sectors, then each sector is divided into multi-section roof tile construction areas according to a building height, and each section of construction area is divided into multiple layers; positioning is carried out by taking space truss axes where central areas of the sectors are located as reference lines, then construction is carried out on the two sides by taking the reference lines as reference lines in the construction areas, and construction precision is detected in real time; and the construction method is used for installing the roof tile according to layered and sectioned modes, and the installation precision and installation quality are effectively guaranteed. A plurality ofworking surfaces are adopted for simultaneous construction, the construction period is greatly saved, the requirements on hoisting machinery is small, the working efficiency is improved, the construction method enhances the construction safety and operability of the spherical crown-shaped space truss roof tile, and relatively speaking, the method is little in investment, good in economy and strong in applicability.

The invention belongs to the technical field of sulfuric acid separation and concentration, and in particular relates to a high-efficiency waste sulfuric acid concentration method. The high-efficiencywaste sulfuric acid concentration method comprises the following steps: S1, performing a precipitation reaction on waste sulfuric acid in a precipitation tank, wherein the precipitation tank structurally comprises a tank body on which a horizontal rotary plate and a rotating motor are arranged, stirring tubes are connected around the bottom edge of the horizontal rotary plate, and porous ball screens are connected onto each stirring tube in a penetrated manner; S2, heating: transferring filtered effluent to a heating tank for heating to 50 to 60 DEG C to obtain effluent of the heating tank; and S3, carrying out distillation and separation by using a concentrated membrane component. By adopting the method disclosed by the invention, the concentration of metal ions in waste sulfuric acid isremarkably reduced, and the concentration of sulfuric acid is further well improved, and furthermore, the novel precipitation tank is used for collecting flocculants while flocculating to greatly reduce the work load of a rear continuous filter, and reduce the equipment loss, so that the cost is lowered, and the efficiency of concentration and purification is high.

The invention discloses a hot stamping forming method and device for high-pressure and high-density fins of a plate-fin heat exchanger. As the pitch of the high-pressure and high-density fins is reduced, a stamping tool becomes thinner and thinner, so that the forming force borne by a die and the tool in the cold stamping forming process becomes larger and larger, and the die and the tool are prone to deformation, abrasion and even breakage. The hot stamping forming method for the high-pressure and high-density fins is provided for solving the problem that punching of the high-density and high-pressure fins cannot be completed through a cold stamping technology, the forming lateral force borne by the stamping die is greatly reduced compared with traditional cold stamping, the requirement for the mechanical performance of materials of the die and the tool is lowered, the forming difficulty is lowered, and therefore the fin process technical limit of a high-pressure, high-density and micro-channel plate-fin heat exchanger with large thickness and small fin pitch is broken through. The method comprises the following steps: carrying out solid solution heat preservation treatment on a coated aluminum alloy sheet, rapidly transferring the coated aluminum alloy sheet to a fin forming machine for hot stamping forming, then carrying out rapid quenching, and carrying out artificial aging treatment and cleaning.

The invention relates to a cable force test device for a space cable structure, and the device comprises a support which serves as a vertical bearing member of the cable force test device; the net rack platform is supported by the support, the net rack platform is formed by connecting net rack rod pieces and bolt balls through high-strength bolts, and the bolt balls comprise an upper chord ball and a lower chord ball; the inhaul cable is arranged below the net rack platform, and two ends of the inhaul cable are connected with a lower chord ball of the net rack platform; the supporting rod is arranged below the net rack platform, the lower end is connected with the inhaul cable body, and the upper end is connected with a lower chord ball of the net rack platform; the tensioning tool is arranged on the inhaul cable and used for tensioning the inhaul cable to generate prestress; the platform reinforcing device is arranged above the net rack platform and is connected with an upper chord ball of the net rack platform; and the platform displacement monitoring system is arranged on the net rack platform. The cable force testing device can be used for cable force testing experiments of different cable structural forms, and is low in testing site requirement, high in adaptability, safe, convenient, simple in structure replacement, high in economical efficiency and worthy of engineering popularization.