30results about How to "Reliable means" patented technology

The invention discloses a complicated jointed rock mass hydraulic coupling field tri-axial testing system. The complicated jointed rock mass hydraulic coupling field tri-axial testing system comprises a water-tight test cabin, a tri-axial stress loading system, a water pressure loading system, a drainage system and a measurement system, wherein the tri-axial stress loading system comprises a water-permeable steel plate, a force transfer steel plate, a jack, a hydraulic pipeline and a pressure controller, wherein the water pressure loading system comprises a high-pressure water pump and a pressure water pipeline, the drainage system comprises a water-permeable base and a drainage pipeline, and the measurement system comprises an osmometer, a flow meter, a strain meter, a sound wave transducer, a data line and a computer. The complicated jointed rock mass hydraulic coupling field tri-axial testing system can provide an effective and reliable research means for research of an engineering rock mass hydraulic coupling mechanism.

The invention relates to an extended release nifedipine agent with sodium alginate as release materials and the components with the weight percentages: nifedipine 10 percent, sodium alginate 30 to 50 percent and the allowance of other medical supplemental materials. By adopting the sodium alginate as the only release materials, the invention has the advantages of strong controllability, stable storage, good efficacy, long control effect and less taking times for patients. As the sodium alginate is natural polysaccharide carbohydrate extracted from kelp, a natural cellulose, the invention not only reduces the side effect of the drugs but also alleviates the absorption of fatty acid and bile salt, thus having the effect of reducing the serum cholesterol, blood triglyceride and blood glucose; at the same time, the invention can prevent the accumulation of harmful metals such as strontium, cadmium and lead in intestinal of bodies and has the advantages of preventing diseases such as hypertension, diabetes mellitus and obesity, preventing sudden pathogenesis and safely spending pathogenesis peak periods.

The invention discloses a surface plasmon coupled emission (SPCE) directional enhanced microscopic fluorescence imaging and spectral detection method and device based on an objective lens coupling type. The polarized excitation light modulated by a half-wave plate is reflected by a dichroic filter to Arriving at the objective lens at a specific angle, exciting the metal surface plasmon to couple with the sample, the generated SPCE signal is collected by the objective lens and filtered by a dichroic filter, and then imported into the SPCE microfluorescence imaging module or SPCE microfluorescence spectrum through the mirror switch The module realizes the acquisition of SPCE microscopic fluorescence imaging and spectrum of the same micro-area of ​​the sample. In the present invention, by combining the microscope system, the coupling strategy SPCE is applied to high-spatial-resolution fluorescence imaging and spectroscopy at the same time. It has directional enhancement characteristics and a spatial selection function on the micro-area scale, and can obtain high-quality micro-fluorescence imaging and spectroscopy of the same micro-area of ​​the sample. Spectral information provides an efficient and reliable means for detecting low-content components in micro-regions of interest in complex systems.

The invention discloses a modeling method for lining erosion of blast furnace hot blast stoves based on distributed optical fibers, and belongs to the technical field of modeling erosion of hot blast stove linings. In the present invention, the distributed optical fiber is horizontally wound on the top of the hot blast stove, and the start and end of the distributed optical fiber are connected to the distributed optical fiber sensor. The distributed optical fiber sensor adopts a double-end single-path demodulation method to extract the temperature field along the optical fiber path. The erosion model solving unit uses the finite element method to solve the actual shape and size of the inner boundary of the hot blast stove body; in the process of solving, the virtual adiabatic inner and outer boundary correction method is used to deal with the boundary problem of the hot blast stove lining erosion model and quantitatively calculate the hot blast stove lining Erosion status: The virtual adiabatic internal and external boundary correction method makes the erosion model not only suitable for the hot blast stove at the beginning of the furnace, but also for the hot blast stove that has been put into production, and can even be extended to the relevant monitoring fields of the hearth bottom of the blast furnace, which greatly improves The scope of application of the erosion model is widened, which provides a guarantee for the safe production of blast furnaces.

The invention provides a method and a device for controlling the cooling strength of a double-roll thin-strip continuous casting roll. Each casting roll is provided with one or a plurality of water inlets and one or a plurality of water outlets corresponding to the water inlets, so that one or a plurality of independent cooling water channels are formed in the casting roll. Water outlets of the cooling water channels are provided with flow regulating valves. A cooling controller calculates heat Qn brought away in unit time by cooling water in each cooling water channel in each casting roll according to the cooling water temperature t0 of the water inlet of each cooling water channel of the casting roll and the flow qn, temperature tn and pressure pn of the cooling water of the water outlet of each cooling water channel, and the heat Qn brought away in unit time by the cooling water in the cooling water channels in each casting roll is identical. The water flow qn of the cooling water channels is regulated according to the difference between total heat sigma Qn and a target value Q of the heat brought away in unit time by the cooling water in the cooling water channels of each casting roll. Finally, the heat brought away in unit time by the cooling water in each casting roll is regulated to be identical to the target heat value Q.

The invention discloses a U-shaped gate valve, which relates to the field of valves. It includes a valve body, a valve stem, a valve plate and a valve seat. The valve body and the valve seat jointly clamp the valve plate, and the valve plate is U-shaped. , between the valve plate and the valve body, there is an elastic member that provides the thrust required for the sealing cooperation between the valve plate and the valve seat, and the elastic member includes a plurality of first elastic members installed on the valve body in a U-shaped arrangement , the first elastic member is tubular and is provided with a gap along the length direction, and the valve body and the valve seat are connected in a movable and adjustable manner. The present invention has the advantages of good working stability.

The invention discloses a method for measuring the advance action range of progressive breakage of multi-level key layers, which relates to the field of measurement of the advance action range of overlying hard roof breakage after coal seam mining, and specifically solves the current domestic and foreign problems of accurately measuring the breakage action range of hard roofs. method. The present invention is based on on-site drilling and physical and mechanical parameters of coal and rock mass measured in the laboratory. A physical similar model is laid in the laboratory, and a high-definition high-speed camera is used to monitor the change of black speckle spots on the surface of the model in the whole process. The displacement change curve of the spot, the range where the displacement change is greater than zero is the leading influence range of the key layer. The invention adopts the research method of laboratory physical similarity simulation, which is easy and reliable, and the operation process is simple; the model parameters are all taken from the field, and the reliability of the test results is high; the prediction results can provide a theoretical basis for the support design of the advanced roadway on the spot , has practical significance and broad application prospects.