34results about How to "Large "fluctuation" range" patented technology

The invention relates to a multi-element alloy getter for purifying krypton and xenon, and a preparation method of the getter, and the getter can be used for solving the problems that the existing getter is poorer in pertinence, insufficient in handling capacity, high in energy consumption, easy in pulverization and short in service life, and the like. The multi-element alloy getter comprises the following components: 50-65% of zirconium, 10-20% of aluminum, 5-10% of iron, 2-10% of titanium, 3-5% of lanthanum, 3-5% of silicon and the balance of unavoidable impurities. The method comprises the steps of pretreatment of alloy simple substances, alloy smelting and alloy crushing. The getter can meet the purity requirement of high-purity krypton and xenon (99.999%), is large in fluctuation ranges of anti-raw gas fluorocarbon and oxygen nitrogen compound, large in raw gas impurity adsorption capacity, high in raw gas impurity removal depth, wide in service temperature range (300-1000 DEG C) and long in service life, and is not pulverized.

The invention relates to a reactor vented waste gas purification device and method. The purification device mainly comprises a vented waste gas check device, a gas bag collecting chamber, a high-rate waste gas dilution device and an optical pyrolysis oxidation device, wherein a reactor is connected to the gas bag collecting chamber through the vented waste gas check device, an outlet of the gas bag collecting chamber is connected to the high-rate waste gas dilution device; an outlet of the dilution device is connected to the optical pyrolysis oxidation device; an outlet of the oxidation device is connected to a gas emission outlet. The purification method comprises following steps: reactor vented waste gas is collected to the gas bag collecting chamber; waste gas concentration is reduced by the high-rate waste gas dilution device; gas with low concentration is subjected to optical pyrolysis purification. The reactor vented waste gas purification device and method have the advantages of being high in safety, good in stability, low in cost, high in purification efficiency and free of secondary pollution.

The invention relates to an HPLC carrier communication technology capable of automatically testing line impedance, comprising a carrier wave measurement module and an early warning module. The precision sub-detection modules are all electrically connected, the high-precision sub-detection module and the data retrieval module are electrically connected, the main detection module and the impedance data storage module are electrically connected, and the impedance The data storage module and the impedance data comparison module are electrically connected. The beneficial effects of the invention are: the HPLC carrier communication technology that can automatically test the line impedance is provided with an impedance data storage module, an impedance monitoring module and an impedance control module, and a monitoring signal is transmitted to the impedance monitoring module through the impedance detection module, and then passes through the impedance monitoring module. The data comparison module is used to analyze and compare the impedance data, and then the data is transferred to the impedance control module for monitoring and control operations.

A paliperidone double-layered osmotic pump controlled release tablet and the preparation method thereof are disclosed. The double-layered osmotic pump controlled release tablet comprises a rigid membrane, a push layer, a drug layer, an isolation layer and an aesthetic coating, wherein the rigid membrane contains a semi-permeable polymer, a porogen and / or a plasticizer and has one or more drug release orifices on one end, the push layer comprises an expanding material, an osmotic agent, a binder, a colorant and a lubricant, the drug layer contains a pharmaceutically active ingredient, a hydrophilic polymer, an osmotic agent, a colorant, a lubricant and an antistatic agent, the isolation layer is located between the inner surface of the rigid membrane and the push layer, and contains a hydrophilic polymer. The paliperidone double-layered osmotic pump controlled release tablet shows an increasing drug release rate at early stage and keeps a constant drug release rate at later stage.

The invention discloses a DVR multipath audio and video recording method. The method comprises the steps of collecting and buffering all the input audio data sections to an audio data buffer area, collecting and compressing a part of input video frame compression data into a video data buffer area, periodically checking whether data exist in the buffer areas in a timing mode, and reading the data of the buffer areas to a storage card. The method is quite suitable of application of DVR multipath audio and video record large in video frame rate fluctuation range, is wide in frame rate fluctuation range, and can reach 80% in fluctuation range, namely, video still can maintain a good time synchronous effect when being changed into 6frames / second from original preset 30frames / second in frame rate.

The invention relates to a comprehensive control method for keeping a fixed-point height of an airship in the stratosphere, which is used for keeping the fixed-point height of the airship in the stratosphere by adopting a combined mode of pressure adjustment and thrust vector. The method has the advantages of small fluctuation range of the fixed-point height and great corresponding reduction of the reserve volume of an auxiliary ballonet. To be explained, the application of the thrust vector does not increase extra energy consumption because the airship in the stratosphere always keeps a certain thrust in a fixed-point flight in order to overcome the wind resistance; According to the method, only the direction of the thrust is changed and an increased net buoyancy is balanced by utilizingthe component in the vertical direction, which can result in that the component in the horizontal direction cannot overcome the wind resistance so that the position precision of the airship in the stratosphere in the horizontal direction cannot be kept; however, in terms of engineering application, the expense of a little horizontal positioning precision is worthy because the fixed-point height position of the airship in the stratosphere is far more important than the horizontal position precision thereof; and the airship in the stratosphere can flexibly fly to a fixed-point position once thetemperature returns to normal.

An optical DC current measurement device for high-voltage direct current transmission. The primary high-voltage end adopts an all-fiber sensing method, the primary end and the secondary end adopt a polarized light transmission scheme in which segmented folded silicone rubber insulators are pre-embedded with polarization-maintaining optical fibers, and the secondary end adopts A high-speed optical modem scheme enables DC current measurement. The sensing optical fiber ring body and the upper flange structure are located on the top of the upper high-voltage polarization-maintaining optical fiber insulator, the upper pressure equalizing ring is located on the outer circumference of the sensing optical fiber ring body, the middle pressure equalizing ring is located at the junction of the insulators at both ends, and the lower flange The structural parts and the lower fiber storage box are located at the bottom of the insulator, and the high-speed modulation and demodulation unit is located at the secondary side. The invention is suitable for direct current measurement of high-voltage direct current, especially UHV flexible direct-current polarity busbar, and improves the performance of the control and protection system.