37results about How to "Reduce loading difficulty" patented technology

The invention provides a medical device and a fixing mechanism of medical equipment. The medical equipment can be conveniently located at a target position in the body through the fixing mechanism toachieve corresponding implantation or interventional treatment of the medical equipment, and accordingly, the medical effect is improved. The medical equipment can be a lead-free pacemaker, and physiological pace-making on the heart by the pacemaker is conveniently realized. The fixing mechanism comprises a base and fixing member, the extension direction of the base is parallel to that of a presetobject, and the fixing member is arranged on the outer wall of the base and extends around the base; one end of the fixing member is connected with the outer wall of the base, and a gap is formed between the other end of the fixing member and the outer wall of the base. During actual use, the base is stressed to rotate along the extension direction of the fixing member, and drives the fixing member to rotate together; during rotation, the fixing member is directly inserted into a tissue or a blood vessel wall parallel to the base, so that the medical equipment can be fixed into the atrium, the ventricle, the precava or other blood vessels, or fixed onto the interventricular septum or the interatrial septum.

The invention discloses a single-frequency overlapping method for a power capacitor noise test. The method comprises the following steps that (1) according to loaded voltage u and loaded current I of a capacitor, the frequency spectrum SU of a capacitor voltage square is computed; (2) according to the frequency spectrum SU of the capacitor voltage square, each-time single-frequency loaded voltage U(f) is computed, wherein f is the frequency of the loaded voltage; (3) the single-frequency loaded voltages U(f) with different frequencies f are loaded on the capacitor in sequence, and meanwhile the capacitor radiation sound power levels LWAf are measured in a noise elimination room; and (4) all the radiation sound power levels LWAf loaded with single frequencies are converted into sound power, then number adding is carried out, radiation power during whole loading is obtained, and then a predicated whole A weight measuring sound radiation power level LWA is obtained. According to the method, the capacitor noise test under infinite-time harmonic waves can be achieved, and a single-frequency-output frequency-variable power supply can be used for estimating the noise of the capacitor under the harmonic waves accurately.

The invention discloses a test device of a concrete shear creep coefficient and a test method thereof. The test device comprises a bracket which is used for supporting a long edge of a cross beam specimen, so that the support end of the cross beam specimen rotates along a support line, wherein a loading bracket is arranged on the other long edge of the specimen; a loading weight is placed on the loading bracket; and a strain transducer is respectively arranged at the intersected position at the center of the cross beam specimen along the long edge, and conveys the collected signal to a collection case through a lead. The test method comprises the following steps: casting the specimen into the cross beam specimen, and measuring compressive strain and tensile strain in idle load; mounting the loading bracket on which the loading weight is placed, and measuring the compressive strain and the tensile strain after loading; computing the elastic strain of the load age by comparing with the numerical value in idle load; obtaining the elastic strain at any moment by long-term continuous collection; finally computing the shear creep coefficient according to the formula. Thus, reverse loading is carried out through the bending of the cross beam; the test device and the test method are simpler, more convenient and safer to operate.

The invention discloses a detachable electromagnetic induction heater for diameter-expanded bend-pushed large-diameter elbow, which comprises a detachable electromagnetic induction heating coil, wherein a molding core head for expanding diameter and pushing bend is sleeved with the detachable electromagnetic induction heating coil; a central axis of the detachable electromagnetic induction heating coil is coincident with a central axis of the molding core head; the molding core head is a cleat-shaped core head that comprises an extension section, a deformation section and a shaped section; the detachable electromagnetic induction heating coil comprises a straight line section heating coil and a bended section heating coil; the straight line section heating coil and the bended section heating coil are connected by copper bars; the straight line section heating coil is annularly wound on the extension section; and the bended section heating coil is annularly wound on the deformation section and the shaped section. The detachable electromagnetic induction heater is simple in structure, reasonable in design, simple and convenient to use and operate, strong in operability, good in using effect, not only can improve the pipe blank feeding efficiency when expanding the diameter and pushing the bend of the large-diameter elbow, and also can improve the heating efficiency and the uniformity of the pipe blank.

The invention discloses a bonding packaging method suitable for a large-size and high-density-structure metal micro-channel radiator. The boding packaging method comprises the steps that 1) a bondingpositioning groove is machined in a packaging cover plate; 2) a cover plate positioning groove and a micro-channel bottom plate positioning groove are machined in a positioning block; 3) a packaging cover plate is positioned and installed through the cover plate positioning groove in the positioning block; metal slurry is coated in a bonding positioning groove in the packaging cover plate; 4) a micro-channel bottom plate is mounted through the micro-channel bottom plate positioning groove in the positioning block and the bonding positioning groove in the packaging cover plate; and 5) elastic pre-tightening is performed on a positioned and aligned packaging body by bolts, oxygen-free high-temperature slurry molting, and cooing and bonding are carried out, and finally a large-size and intensive type metal micro-channel radiator packaging body is obtained. By virtue of the transition layer compensation type bonding packaging method, the technical bottleneck of bonding and packaging of thelarge-size and high-density-structure metal micro-channel radiator is overcome, and high-strength, non-clearance and high-precision metal micro-channel packaging are achieved.

The invention relates to a self-adaptive carrying plate for container integral car loading. A carrying plate body is included and formed by connecting a plurality of carrying plate frames side by side. Every two adjacent carrying plate frames are in swinging connection through a corresponding loose joint mechanism, and a corresponding swinging buffering mechanism is fixedly arranged between everytwo adjacent carrying plate frames. The lower ends of the multiple carrying plate frames are evenly and rotationally provided with a plurality of corresponding H-shaped wheel bases. The two sides of the middles of the H-shaped wheel bases are rotationally arranged on the corresponding carrying plate frames. The two ends of the H-shaped wheel bases are rotationally provided with corresponding supporting wheels. By means of the self-adaptive carrying plate, self-adaptive deformation can be effectively generated in real time according to the container sinking amount, accordingly, the self-adaptive carrying plate effectively adapts to the height difference generated between a car loading platform and the bottom of a box body of a container and effectively adapts to inclination of the box bodyof the container, stable supporting is effectively kept in real time, whole-car loading difficulty of goods is lowered, and excessive deformation of the carrying plate is prevented.

The invention relates to a plastic intake manifold for an automobile engine and a pressing block special for the plastic intake manifold. The plastic intake manifold and the pressing block overcome the defects that metal intake manifold brackets are additionally arranged at one or more positions of a plastic intake manifold, mounting bolts and nuts of the intake manifold brackets need to be added,the cost is increased, two rows of fastening bolts of the intake manifold are adopted, the assembly efficiency is low, and the assembly precision is poor. The plastic intake manifold and the pressingblock are characterized in that a front arc-shaped support plate and a rear arc-shaped support plate are arranged at the intake end of the intake manifold, and a net-shaped reinforcing rib formed byinterlacing a plurality of rib plates is arranged between an area defined by the front arc-shaped support plate and the intake manifold and an area defined by the rear arc-shaped support plate and theintake manifold; and an upper plane and a mounting inclined plate are arranged on the upper end face of an intake manifold mounting flange, and wedge blocks are arranged on the plane of a fixing plate of the pressing block special for the intake manifold. The plastic intake manifold for the automobile engine and the pressing block have the beneficial effects that the structure is compact, and theweight of the whole machine is reduced; and through the inclined plane press fit of the intake manifold and the pressing block special for the intake manifold, the installation and disassembly of theintake manifold are more convenient, the cost is saved, and the assembly precision and the assembly efficiency are improved.

The invention belongs to the technical field of reactors and provides a reactor for an exothermic reaction to solve the problems of large size of the conventional tubular reactor and nonuniform reaction degree distribution and different heat removing requirement in the conventional tubular reactor. The reactor comprises a heat exchange type tube nest fixed bed section and a heat insulation type fixed bed section; the heat insulation type fixed bed section is positioned at a downstream of the heat exchange type tube nest fixed bed section; and the filling volume ratio of catalysts of the two sections is (0.2-5):1. The reactor can be used for various exothermic reactions such as preparation of isopropamide through acetone ammoniation, preparation of isopropanol through acetone hydrogenation, and preparation of cyclohexane through benzene hydrogenation, and has the advantages that the reactor is small in size and low in cost, processing is easy to realize, and yield can be improved.

The invention discloses a corrugated membrane reactor device for hydrogen isotope exchange. The right end of the palladium alloy tube is connected to an external sleeve through a flange, and the left end of the palladium alloy tube is connected to a thermocouple sleeve, which is mechanically welded. Connect and seal; above the thermocouple casing, a branch pipe II is provided as the tritium-containing impurity gas Q 2 The inlet of O; there is a branch pipe III under the outer casing as the replacement gas H 2 Inlet; there is a branch pipe IV above the outer casing as the product gas Q 2 outlet; the right end of the palladium alloy tube is connected with branch pipe I as tail gas H 2 O's exit. The palladium alloy tube is filled with a catalyst as a catalytic exchange reaction area, and the reaction occurs:. The invention utilizes the hydrogen isotope exchange reaction to replace deuterium and tritium in the combined state and recovers them. The corrugated palladium alloy tube has a larger surface area than the traditional palladium alloy straight tube with the same appearance size, ensuring Q 2 The fast penetration and operational stability, the internal loading mode reduces the difficulty of catalyst loading, and can obtain a higher decontamination factor, which is suitable for the treatment of ash exhaust gas containing tritium impurities in fusion reactors and other occasions.

The invention discloses a method for filling a catalyst in a tube type reactor. The method comprises the following steps of: (1) halving the catalyst to be filled in each reaction tube; (2) filling the first part of the catalyst in each reaction tube and controlling the rising velocity of the height of each catalyst bed layer as v1; (3) measuring pressure drop of each reaction tube; and (4) filling the second part of the catalyst in each reaction tube. The method for filling the catalyst in the tube type reactor, disclosed by the invention, improves uniformity of the catalyst filled in each reaction tube and lowers filling difficulty of the catalyst.