55results about How to "Meet engineering applications" patented technology

The invention discloses a method for hydraulically optimizing a centrifugal pump under a plurality of working conditions based on loss, which comprises the following steps of: establishing a multi-working condition hydraulic optimization model of the centrifugal pump based on various loss formulae; establishing relationships among various loss coefficients, specific speeds and flows of the centrifugal pump at different specific speeds under the different working conditions by external characteristic experiments; compiling multi-working condition hydraulic optimization programs PCC.exe of the centrifugal pump by adopting Visual C++; integrating the PCC.exe by adopting iSIGHT, taking parameter values of single-point design as initial values, taking heads and power under the plurality of working conditions as constraint conditions, taking maximum efficiency under the plurality of working conditions as a target, and optimizing the centrifugal pump by adopting a global optimization algorithm or combination; and designing a multi-working condition hydraulic model by adopting PCAD according to an optimal solution set obtained in the optimization. The method has the advantages of not only performing multi-working condition hydraulic design on the centrifugal pump according to performance requirements under the plurality of working conditions, but also performing energy-saving alternation on the conventional centrifugal pump.

The invention discloses a different-source image matching method based on refined feature optimization extraction, which mainly solves the problem of low matching precision in the prior art, and adopts the technical scheme that 1, gradient moduli and directions of an optical image and an SAR image are calculated by adopting different gradient operators respectively; 2, completing region-of-interest calibration by utilizing the specific property of the target in the image; 3, according to the result of the step 1, obtaining edge features of the interested areas of the two images, and obtaininga coarse matching affine transformation matrix between the two images through template matching; 4, obtaining a transformed optical image by using the coarse matching affine transformation matrix, andthen extracting refined features; 5, performing preliminary matching on the refined features, and eliminating singular point interference to obtain a fine matching affine transformation matrix; and 6, obtaining a final affine transformation relation matrix between the optical image and the SAR image according to the results of the steps 3 and 5. The method can achieve the precise registration ofa heterologous image, and can be used for the guidance of an aircraft.

The invention relates to the technical field of Cameralink high-speed digital image long distance transmission, and particularly discloses an FPGA-based full-mode Cameralink digital image optical transceiver transmitting terminal comprising an FPGA chip, a Cameralink interface module and an SFP optical module. The FPGA chip comprises a series-to-parallel signal conversion module, a Cameralink decoding module and a mode control module. The Cameralink interface module receives a Cameralink signal and transmits the Cameralink signal to the Cameralink decoding module. The Cameralink decoding module decodes serial data and transmits the decoded serial data to the series-to-parallel signal conversion module. The series-to-parallel signal conversion module performs series-to-parallel conversion on the received digital image signal so as to form the serial data stream. The SFP optical module receives the serial data stream and converts the serial data stream into an optical fiber signal. The mode control module controls the work mode of the transmitting terminal. Correspondingly, the invention also discloses an FPGA-based full-mode Cameralink digital image optical transceiver receiving terminal. FPGA chip software setting is utilized to replace the conventional coding and decoding chip so that the transmitting terminal and the receiving terminal of the optical transceiver are enabled to be identical in hardware structure, and the beneficial effect of increasing system integration can be achieved.

The patent of the present invention discloses a variable angle fan, which realizes the parallel and non-parallel control of the blade angle by controlling the oil pressure of the solenoid valve, and realizes the problem of changing the airflow size at low cost, and then adjusts the positive and negative angles of the non-parallel angle. The effect of changing the air flow direction is realized, and the purpose of automatically cleaning the water tank and improving the heat dissipation efficiency is achieved. Compared with the prior art, the invention has the advantages of simple structure and low cost, and can meet the engineering application.

The invention discloses a method for measuring the material surface emissivity by a thermal infrared imager rapidly, and relates to the technical field of thermal infrared imaging temperature measurement. A thermal infrared imager, a black box and a heating platform are included. The method comprises the following testing steps: 1) acquiring the response of the black box by the thermal infrared imager under a temperature environment, wherein the process is enough once under the condition of invariable environment temperature, and storing data into a computer for preservation; 2) heating a measured objected to relatively high temperature greater than or equal to 70 DEG C generally, and acquiring the response of the measured object by the thermal infrared imager; 3) operating according to a formula, thereby obtaining an accurate emissivity measurement result. Regarding to the thermal infrared imager, according to the measurement method, only an auxiliary device is required to be added for the thermal infrared imager; the emissivity of complex material surfaces can be measured rapidly; the detection speed and the detection efficiency of emissivity of the thermal infrared imager are improved; meanwhile, the precision and reliability of the detection result are ensured; the using range of the thermal infrared imager is expanded.

The invention provides an integrated steam generator of a reactor. The integrated steam generator is characterized in that a tube bundle sleeve which is of an omega-shaped structure is arranged on an inner-wall barrel and an outer-wall barrel of the integrated steam generator, and heat transfer tube bundles are arranged between the tube bundle sleeve and the inner-wall barrel; the tube bundle sleeve comprises an outer sleeve of the tube bundle sleeve and an inner sleeve of the tube bundle sleeve, and the top of the inner sleeve of the tube bundle sleeve is hermetically connected with the top of the outer sleeve of the tube bundle sleeve; a steam connecting tube is arranged on a lower section of the outer-wall barrel, and a water supply connecting tube is arranged on an upper section of the outer-wall barrel and extends to the outer sleeve of the tube bundle sleeve; and the bottom of the outer sleeve of the tube bundle sleeve and the outer-wall barrel are connected with each other to form a connected section, and the connected section is positioned below the steam connecting tube. The integrated steam generator with the structure has the advantages that heat expansion among the tube bundles and the outer-wall barrel is balanced, and the water supply connecting tube is positioned at a high location, and accordingly is high in water storage capacity and accident mitigation capacity when broken; and water and steam are physically isolated from each other owing to the tube bundle sleeve structure, and water supply distribution space and steam buffer space are provided.

The invention discloses a gap design method used for an automobile covering part die. The method comprises the following steps: inputting a covering part parameterized three-dimensional curved surface module, reading parameter patch primitives as well as a topological structure and characteristic parameters thereof which are comprised by the three-dimensional curved surface module; according to the requirements for designing a female die or a male die, hollowing out the female die edge, convex hulls and easily-interfered molded surface in the obtained three-dimensional curved surface module; strongly pressing blank holder management surfaces and pressing material core areas of the male die or the female die; performing enlargement treatment on convex fillets having the material supporting function in a pressing material surface covering area, performing reduction treatment on concave fillets, and recreating a new fillet surface; outputting the three-dimensional curved surface module subjected to gap design according to the input document structure of the three-dimensional curved surface. The method has the characteristics that the operation is simple, the algorithm is simple and convenient, the deformation quality and efficiency are high, and the requirements for the adjustment of various gaps of die design can be well met.

The invention belongs to the technical field of design for a centrifugal pump as a turbine and discloses a multiple-target optimization method for hydraulic performance and outer field flow-induced noise for the centrifugal pump as the turbine. The method comprises the following steps: step I, defining a determination method for a multiple-target optimization design variable value range for the centrifugal pump as the turbine; step II: through external characteristic experiment, building a computing method for mechanical efficiency required in CFD numerical calculation for the centrifugal pump as the turbine, so as to accurately calculate the efficiency of the centrifugal pump as the turbine; for different characteristics of the inner and outer media for the centrifugal pump as the turbine, adopting an FEM/AML sound-vibration coupling method for solving outer field flow-induced noise; step III: building sensitivity analysis models of different geometrical parameters for the efficiency of the centrifugal pump as the turbine and the outer field total noise power level; step IV: on the basis of a response surface method, carrying out multiple-target optimization on the hydraulic performance and outer field flow-induced noise. By adopting the method, the design efficiency is improved, the design period for the centrifugal pump as the turbine is shortened, the efficiency of the centrifugal pump as the turbine can be effectively improved and meanwhile, the noise of the centrifugal pump as the turbine can be reduced.

The invention discloses a composite cement additive. The cement additive is prepared by mixing, by weight, 16-22 parts of calcium hydroxide, 10-16 parts of isopropanol, 8-12 parts of zinc chloride, 2-8 parts of 2-methyl-dodecane-5-one, 4-10 parts of dodecyl dimethyl betaine, 2-6 parts of lignosulfonate, 1-5 parts of alkyl succinimide, 6-10 parts of acetophenone, 2-8 parts of ammonium sulfate, 4-10 parts of tetrabutylammonium borohydride, 5-9 parts of palmitic acid and 6-12 parts of stigmastenol. The prepared cement additive can increase cement yield and enhance cement strength, has small influences on early-stage compressive strength of cement, can meet engineering requirements, can improve cement mechanical properties and a pore structure, improves anti-freezing and grinding assisting performance of the cement, reduces permeability of the cement, adjusts cement setting time, increases concrete compactness, and achieves the functions of energy conservation and environmental protection. Compared with additives sold in the market, the cement additive is remarkable in performance improvement and has wide market popularization prospects.

The invention belongs to the field of machine design and manufacturing-high grade numerical control machine tool and basic manufacturing equipment, and relates to large-scale seven-shaft linkage numerical control laying and winding integrated forming equipment. A main machine which is formed by three linear shafts and one rotating working table rotating shaft, and a laying and winding head which is driven by three rotating shafts are adopted to composite three translation movement and four rotation movement to achieve laying and winding head spatial motion track control and workpiece rotation.A conveying belt u shaft is adopted to drive winding and rewinding of a cloth belt and speed adjustment to achieve eight-shaft control seven-shaft linkage laying, and therefore automatic forming of acomposite material skin structure with all kinds of spacial special-shaped hook surfaces is achieved. The spatial motion track of the laying winding head can be directly controlled, even a workpiecewith the special-shaped hook surface can be accurately attached to the surface of the laying winding head for laying and winding, and therefore forming operation of material cutting after solidifyingand forming can be reduced and even avoided. Pollution is reduced, the cost is saved, and efficiency is improved. The automatic tow placing technology provides an equipment platform suitable for engineering application research and manufacture.

The invention provides a supercritical water particulate matter visual measurement experimental device and method. The device comprises a preheating section for primarily heating fluid in a pipeline,a heating section for secondarily heating the fluid in the pipeline, a visual section for observing particulate matters, a cooling section for cooling the fluid in the pipeline, a pressure stabilizingsection for adjusting the pressure of a loop and a feeding section for adding water and particulate matters into the loop. The experimental device can study the flowing condition of fluid in the pipeline and the deposition movement condition of particulate impurities in the fluid in a visual measurement mode, is visual in observation, can accurately and effectively measure related data, and meetsexperimental requirements and engineering application.

The invention discloses a titanium slag-based solid waste cementing material and a preparation method thereof. The titanium slag-based solid waste cementing material comprises the following raw materials by weight: 70-80% of a titanium slag-based material, 15-25% of gypsum, and 2.5-7.5% of cement clinker. The preparation method is simple, and the used materials are subjected to separate or mixed grinding according to different types of grindability differences, and then are mixed and stirred. In the raw materials, the titanium-containing slag-based material is used as a main component and is matched with the cement clinker and the gypsum to form the gel material, so that effective comprehensive utilization of a large amount of high-titanium-containing slag and industrial byproduct gypsum resources produced by iron and steel enterprises in Panzhihua, Leshan sand bay and the like in the southwest region can be realized, most of conventional engineering applications can be met, and the material can also be used in a construction environment with rich tunnel terrestrial heat.

The invention relates to a carbon dioxide capture pressure swing adsorption tower which is characterized by comprising an inlet flue (1), an outlet flue (8) and at least two rectangular gas adsorption channels, adjacent gas adsorption channels are separated by a baffle (6), and the upper parts of the gas adsorption channels are fixed and pressed by pressing pads (9); an odd gas adsorption channel is set as n gas adsorption channel, an even gas adsorption channel which is sequentially adjacent to the odd gas adsorption channel is set as n+1 gas adsorption channel, n is more than or equal to 1, the upper part of the pressing pads (9) of the n gas adsorption channel and the n+1 gas adsorption channel is provided with a ring shaped guide plate (7); and the inlet flue (1) is rectangular, and is matched with a first gas adsorption channel (3) with the same diameter. The carbon dioxide capture fold-flow fixed bed adsorption tower has the advantages of uniform gas distribution, long gas flow length, high adsorbent utilization rate, bed stability and the like, and is suitable for various kinds of large, medium and small size of carbon dioxide capture pressure swing adsorption engineering.

The invention relates to the technical field of built-in control rod driving, and provides a limited space installation method of a built-in control rod driving line. According to the method, a springbox lower section is assembled on a driving mechanism component, then a buffer lock and a reset spring are mounted in the spring box lower section, then a spring box upper section is assembled on thespring box lower section to form a spring box component, and then a combined body of the spring box component and the driving mechanism component is mounted in a driving line guide cylinder. Then a buffer lock in the spring box part is locked with a rod position measuring rod of a control rod component , so that stable and reliable assembly among the control rod component , the driving wire guidecylinder, the spring box component and the driving mechanism component is realized. The assembling method is simple and convenient, the efficiency of loading and unloading work and maintenance work is improved, the safety and reliability of the limited space installation and operation process can be guaranteed, and then safe and reliable operation of the built-in control rod driving wire after assembling is guaranteed.

The invention belongs to the technical field of electronic materials, and particularly relates to a slotted honeycomb wave-absorbing structure. N identical irregular gaps are formed in a periodic honeycomb structure, a space for embedding electronic modules such as antennas and radars in the honeycomb structure is provided, the design method based on honeycomb wave-absorbing structure embedding is achieved, namely, the honeycomb core is subjected to local hollowing treatment, a highly integrated electronic module is embedded into the core and is subjected to protection design, so that the spacecraft design has qualitative leap in the aspects of light weight and multiple functions. The key problem of the pre-embedded design is to evaluate the electromagnetic/mechanical strength of the slotted honeycomb structure, so that under a reasonable slotting method, the weight of the honeycomb structure is reduced, and the honeycomb structure has good electromagnetic/mechanical properties.

The invention discloses a bituminous mixture modifier and a preparation method thereof. The bituminous mixture modifier is prepared from waste polyethylene, waste polypropylene, a toughening agent, aninitiator, a modifier, an anti-ageing agent, filler and pigment. According to the bituminous mixture modifier and the preparation method thereof, by adopting modification technologies of blending, grafting, toughening and the like, the industrial, agricultural and domestic recovered waste PE and PP, the other modifier, the filler and the like are mixed evenly according to a certain ratio to prepare black solid particles, according to 0.3-0.5% of total mass of a bituminous mixture, the black solid particles, pitch and mineral aggregate are stirred and mixed evenly at a mixing station under technology conditions of certain temperature, mixing time and the like, thus paving can be conducted, the rut resistance capability of a bituminous pavement can be greatly improved, and meanwhile, both the moisture damage resistance performance and the low temperature resistance performance are obviously improved. By adopting the modification technologies, not only is the cost reduced, but also the high temperature stability of the bituminous mixture can be greatly improved, the foreign technology monopoly is broken, and the bituminous mixture modifier and the preparation method thereof have profound significance in the aspects of positively responding to national waste material resource recycling and the like.

The invention discloses a programmed calculation method of diverter impedance parameters and solves the problem that in the prior art, the diverter impedance parameters cannot be accurately measured at different frequencies. According to the method, programmed calculation is achieved through automatic data interaction of electromagnetic field finite element analysis software and mathematical operation software, it is achieved that finite element modules of a diverter are built, a calculation frequency is input, then the programmed calculation of the diverter impedance parameters can be achieved, and a result of the diverter impedance parameters is directly output. Through finite element analysis, the resistance of a single copper-manganese slice of the diverter and a diverter inductance matrix parameter are calculated, a loop voltage equation is edited according to all the parameters, and the diverter impedance parameters are solved through mathematical operation. According to the calculation process, it is achieved that the mathematical operation software calls the finite element analysis software, receives the finite element analysis result, performs the next operation and finally directly outputs the operation result of the diverter impedance parameters, it is achieved that the quantitative relation between the diverter impedance parameters and the frequencies is built, andengineering application is facilitated.

The invention relates to the technical field of built-in control rod driving, and provides a built-in control rod driving line mounting method. According to the method, a spring box component and a driving mechanism component are assembled to form a driving line assembly, the driving line assembly is hoisted into a driving line guide cylinder, and a driving shaft of a control rod component is locked through a spring box buffer lock. The method is convenient to assemble, the efficiency of loading and unloading work and maintenance work is improved, the safety and reliability of the installationand operation process can be guaranteed, and then safe and reliable operation of the built-in control rod driving line after assembly is guaranteed.

The invention relates to the technical field of built-in control rod driving, and provides a built-in control rod driving line assembling method. According to the method, a control rod driving shaft is mounted in a buffer cylinder; the lower end of the control rod driving shaft penetrates through the buffer cylinder and is connected with a cross-wing control rod; a driving line guide cylinder is mounted on a reactor internal structure, then a rod position measuring component and a driving mechanism component are assembled to form a driving line assembly, then the driving wire assembly is hoisted into the driving line guide cylinder, and a combined valve component is mounted on the rod position measuring component. The assembly operation is simple and convenient, the efficiency of loading and unloading work and maintenance work is improved, the safety and reliability of the installation operation process can be guaranteed, and then safe and reliable operation of the built-in control roddrive line after assembly is guaranteed.