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

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 relates to vehicle production process equipment and discloses a vehicle body assembly welding fixture comprising a base and a body side clamping support unit. The body side clamping support unit disposed on the base in a movable manner forms an adjustable included angle with the base. The vehicle body assembly welding fixture has the advantages that the body side clamping support having the adjustable included angle is disposed on the base; accordingly, the body side clamping support can be leveled when left and right body side parts are welded before a vehicle body assembly is welded, assembly is easier for operators, operation is safer, production is faster, and production efficiency can be improved effectively.

The invention discloses a coil stock unrolling feeding device. The coil stock unrolling feeding device is characterized by comprising a base (1), a rotary support (4) with one end connected to the base (1), and a rotary table (6) which is arranged on the support (4) and can rotate, fixing columns (7) are fixed to the rotary table (6), and the base (1) is provided with a power device pushing the support (4) to rotate. The coil stock unrolling feeding device is simple in structure and low in cost. According to the coil stock unrolling feeding device, the loading work can be finished within a very short time, the coil stock loading difficulty can be lowered, one-time loading success is ensured, and therefore the material loss, the occupational injury hidden danger and other accidental situations are reduced, safety and reliability are achieved, meanwhile, the input of manpower and material resources is reduced, accordingly, cost is reduced, and the coil stock unrolling feeding device is suitable for usage and popularization.

The invention discloses a method for preparing a p-tolyl / 4-chlorophenyl isocyanate-modified cationic cyclodextrin chiral resolution material through click chemistry. According to the method, 4-chlorophenyl isocyanate and p-tolyl isocyanate groups are introduced for function derivation of allylimidazole cyclodextrin, then mercapto-alkene click reaction is carried out to realize controllable bridging of allylimidazole cyclodextrin and mercapto-modified silica gel, and a hydrophobic modified cyclodextrin monomolecular layer is constructed on the surface of porous silica gel through thioether bonds, so the novel cyclodextrin chiral resolution material with definite structure and a plurality of action sites is prepared. The p-tolyl / 4-chlorophenyl isocyanate-modified cationic cyclodextrin chiral resolution material can be applied to chiral separation of compounds in a reversed-phase chromatographic mode and shows excellent resolution capability to medicines of different classes, e.g., isoxazolines, flavanones, bendrofluazide and 4-chromanol. The mercapto-alkene click reaction provided by the invention provides a highly-universal effective approach for preparation of a controllable chiral resolution material with stable structure.

The present application relates to a transcatheter valve replacement system. The system includes a valve replacement prosthesis, a delivery catheter, a control handle and an anchoring device; the valve replacement prosthesis includes a valve stent, an artificial valve leaflet and an adaptive covered stent, the artificial valve leaflet is arranged in the valve stent, the adaptive covered stent is connected to the outer periphery of the valve stent, the valve replacement prosthesis is provided with an anchored unit, and the anchored unit is fixed to heart tissue by the anchoring device; and theanchoring device is arranged in the delivery catheter, the anchoring device includes an anchoring needle, an anchoring needle catheter, an anchoring needle push rod, and a controllable guiding device,the anchoring needle is pre-installed in the distal end of the anchoring needle catheter, the distal end part of the anchoring needle catheter has a flexible structure, one end of the controllable guiding device is detachably connected to the anchored unit, and the controllable guiding device can control the distal end part of the anchoring needle catheter to form a fixed bend angle in the radialdirection and make the distal end of the anchoring needle catheter adhered to the anchored unit.

A conveyor includes an inner core assembly and a restraining piece. The restraining piece is rotatably arranged in the inner core assembly, the restraining piece sequentially comprises a fixing ring, a connecting rib and a clamping section from the near end to the far end, the two ends of the connecting rib are connected with the fixing ring and the clamping section respectively, the fixing ring is rotatably arranged in the inner core assembly, the clamping section has a contraction configuration and an expansion configuration, and in the contraction configuration, the clamping section is used for clamping the near end of the blood flow guiding support between the inner core assembly and the clamping section, the friction coefficient of the surface, close to the inner core assembly, of the clamping section is larger than that of the surface, away from the side of the inner core assembly, of the clamping section, and in the expansion configuration, the clamping section is separated from the blood flow guiding support. According to the conveyor, the blood flow guiding support can be prevented from twisting and slipping in the conveying process, the pushing resistance is small, and loading is easy. The invention further provides a blood path guiding support system.

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 method for filling a catalyst in a tube type fixed bed reactor. The method comprises the following steps of: (1) mounting a plugging spring at the bottom of each reaction tube; (2) filling the catalyst in each reaction tube from the opening at the top of each reaction tube and controlling the rising velocity of the height of each catalyst bed layer as 10-40 mm / s; (3) measuring the pressure drop of each reaction tube; (4) complementarily filling the catalyst in the reaction tubes with the pressure drop lower than an average pressure drop by 3% and controlling the rising velocity of the heights of the catalyst bed layers with complementary filling as 5-10 mm / s; and (5) detaching the plugging springs of the reaction tubes with the pressure drop higher than the average pressure drop by 8% and discharging the catalyst in the reaction tubes. The method for filling the catalyst in the tube type fixed bed reactor, disclosed by the invention, improves the uniformity of the catalyst filled in the reaction tubes and lowers filling difficulty of the catalyst.

The invention discloses a car body assembly welding clamp. The car body assembly welding clamp comprises a base and two side body clamping components arranged on the base mutually symmetrically. Each side body clamping component comprises an installing seat, a guide seat, a hinge seat and a clamping support, wherein a lead screw is arranged in the installing seat; sliding rods are arranged on two sides of the lead screw; the extending direction of the sliding rods and the lead screw is kept consistent with the length direction of the installing seat; the sliding rods are sleeved with the guide seat; the lead screw is in threaded connection with the bottom of the guide seat; one end of the lead screw is connected with a driving motor which is used for driving the guide seat to slide along the sliding rods; the hinge seat is installed on the guide seat; the clamping support is hinged to the hinge seat; the guide seat is further provided with an air cylinder; and a piston rod of the air cylinder is connected with the clamping support to drive the clamping support to rotate around a hinge point of the hinge seat. The assembly difficulty is lowered for operators, the operation safety and production takt are improved, and the production efficiency is effectively improved.

The invention discloses an integral catalyst for preparing chlorine by catalytic oxidation of hydrogen chloride and an application of the integral catalyst. The catalyst comprises the following components in percentage by mass: 5-15% of transition metals, 3-5% of an alkali metal, 2-5% of a rare earth metal and the balance of a carrier, wherein and the transition metals are Cu and V, the ratio of Cu to V is 4:1-6:1, the alkali metal is potassium, and the rare earth metal is Ce, La or Pr. The catalyst can be used for preparing chlorine by catalytic oxidation of hydrogen chloride. The applicationmethod comprises the following steps: (1) filling a reaction tube with a plurality of the catalysts with different activity levels, wherein the activity levels are increased from the gas inlet end tothe gas outlet end of the reaction tube; and (2) sending hydrogen chloride and oxygen into a fixed bed reactor for a reaction. According to the invention, heat accumulation at the hot spots can be effectively inhibited, the chlorine yield is high, non-uniform distribution of a fluid on a reaction bed layer can be eliminated, pressure drop is reduced, catalyst filling difficulty is reduced, and manufacturing difficulty and manufacturing cost of the reactor are reduced.

The invention provides an automatic tray loader for a ceramic insertion core. The automatic tray loader comprises a rack, a positive and negative direction regulating mechanism, an insertion core conveying mechanism, an insertion core tray-loading mechanism and a tray loading platform, wherein the positive and negative direction regulating mechanism is fixedly connected with the rack for regulating positive and negative directions of the insertion core for correctly loading the insertion core into a tray; the insertion core conveying mechanism is fixedly connected with the positive and negative direction regulating mechanism and is used for loading the insertion core conveyed from the insertion core conveying mechanism into the tray; and the tray-loading platform is positioned below the insertion core tray-loading mechanism and is used for placing the insertion core loaded into the tray through the insertion core tray-loading mechanism. The automatic tray loader for the ceramic insertion core provided by the invention can be used for automatically separating the ceramic insertion cores in positive and negative directions and then loading the ceramic insertion cores into the tray, so that the problems that a conventional ceramic insertion core tray-loading process is purely manual, processing efficiency is low, labor intensity is great, consumed time is long and wrong tray-loading is easily caused are avoided.

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 provides a method for determining the fatigue test load of an engine main shaft, which solves a problem that the rotating bending moment load cannot be loaded on the ordinary fatigue test machine in the shaft fatigue test through equivalently converting the rotating bending moment load into the vibration torque load, enables small-size shaft parts to be subjected to a fatigue test byusing the ordinary fatigue test machine and does not need to carry out special shaft fatigue tester design, reconstruction or great transformation in allusion to the size of the tested shaft, therebyreducing the cost of the shaft fatigue test, also reducing the test load loading difficulty, and improving the load loading accuracy.

The invention discloses an elevated cargo automatic grabbing and placing loading and unloading robot which comprises a support. A motor is arranged at the left side of the top of the support, a rotating shaft is fixedly connected to the front face of the motor, a first chain wheel sleeves an outer ring of the rotating shaft, a belt sleeves an outer ring of the first chain wheel, and side plates are arranged on the opposite faces of the left side of the top of the support; a connecting shaft is fixedly connected between the side plates, an outer ring of the connecting shaft is sleeved with a conveying belt, the front face of the outer ring of the connecting shaft is sleeved with a second chain wheel, a vertical plate support is fixedly connected with a transverse shaft, baffles are arranged at the two sides of the conveying belt, a base is arranged at the left sides of the tops of the baffles, a grabbing mechanism is arranged on the top of the base, and a grabbing table is arranged at the right side of the base; and a limiting frame is arranged at the right sides of the tops of the baffles. Through cooperative use of the grabbing mechanism and the conveying belt, mechanical grabbing and loading of cargoes can be completed, the cargo loading difficulty is lowered, the personnel consumption and the labor cost are reduced, the safety of loading personnel is guaranteed, and meanwhile, the working efficiency is improved.

The invention relates to a method for synthesizing epoxy propane by loading catalysts different in grain size. According to the method, reaction materials sequentially pass through catalyst bed layerscontaining catalysts the grain sizes of which are gradually decreased. Compared with the prior art, the method has the advantages that heat release is uniform and an overtemperature situation is unlikely to occur. The defects that catalysts with large grain size are low in mass transfer speed and reaction rate and the reaction of catalysts on the next layer immediately happens when hydrogen peroxide is not completely converted are avoided. The service life of the catalysts is effectively prolonged, the regeneration frequency is lowered, the production efficiency is improved, the propylene oxide yield is high, the hydrogen peroxide decomposition rate is low, the explosion risk is lowered, and the safety is high.

The invention discloses a click preparation method of an allyl cationic cyclodextrin chiral resolution material. The click preparation method comprises following steps: preparation of mono-6-(1-allylimidazole)-cyclodextrin; ion exchange of mono-6-(1-allylimidazole)-cyclodextrin; synthesis of mercapto-silica gel; click chemical reaction for preparation of an allyl cationic cyclodextrin chiral chromatographic separation material. Through the efficient thiol-ene click chemical reaction, mono-6-(1-allylimidazole) cyclodextrin is grafted to the mercapto modified porous silica gel surface, the novel natural allyl cationic cyclodextrin chiral chromatographic separation material is prepared, and an highly universal and effective path is provided for preparation of the chiral resolution material with a stable and controllable structure. The prepared allyl cationic cyclodextrin chiral resolution material can be used for chiral separation of compounds in a reverse chromatography mode, and the separation material has excellent separation capacity for different categories of drugs such as isoxazoline, flavanone, bendroflumethiazide, 4-chromanol and the like.

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 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 provides a wind power blade static structure test device and test method, and relates to the technical field of static structure test. The wind power blade static structure test device comprises a bearing platform, and at least one loading mechanism arranged along a preset direction and used for supporting and fixing a blade root part of a wind power blade; and the bearing table is configured to enable the blade tip part of the wind power blade in the preset direction to be higher than the blade root part; so that preset included angle is formed between the connecting line of the blade tip part and the blade root part and the horizontal plane, the loading mechanism is used for applying loading force to the wind power blade, and the loading force is the same as the gravity direction of the wind power blade and the clamp. When the static structure test device for the wind power blade is used for testing the static structure of the wind power blade, the test cost and the loading difficulty of the wind power blade are reduced, and meanwhile, the accuracy of the static test is effectively improved.

The invention provides a bag opening mechanism for gypsum line bagging. The bag opening mechanism for gypsum line bagging is used for bagging and dragging gypsum line bags; in the bagging process of agypsum line bag, the gypsum line bag is braced to a preset position through a gypsum line support frame, a packaging bag is located at the end part of a length direction of the gypsum line bag, the packaging bag is loaded after an opening of the packaging bag is opened through a bag opening structure, and the bag opening structure is shelf-mounted on a guiding sliding seat; and through the slippage cooperation of the guiding sliding seat and a guiding support, a packaging bag dragging seat drags the packaging bag to be loaded into the other end from one end of a length direction of the gypsumline bag. Through arranging the packaging bag dragging seat and the guiding support structure, a loading direction of the packaging bag is consistent to the length direction of the gypsum line bag, so that the loading difficulty is reduced, the stability of the bagging process is ensured, and the damage of the packaging bag caused in the bagging process is avoided.

The invention relates to a method for synthesizing epoxy propane by loading catalysts different in grain size. According to the method, reaction materials sequentially pass through catalyst bed layerscontaining catalysts the grain sizes of which are gradually decreased. Compared with the prior art, the method has the advantages that heat release is uniform and an overtemperature situation is unlikely to occur. The defects that catalysts with large grain size are low in mass transfer speed and reaction rate and the reaction of catalysts on the next layer immediately happens when hydrogen peroxide is not completely converted are avoided. The service life of the catalysts is effectively prolonged, the regeneration frequency is lowered, the production efficiency is improved, the propylene oxide yield is high, the hydrogen peroxide decomposition rate is low, the explosion risk is lowered, and the safety is high.

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 discloses a method for filling a catalyst in a tube type fixed bed reactor. The method comprises the following steps of: (1) mounting a plugging spring at the bottom of each reaction tube; (2) filling the catalyst in each reaction tube from the opening at the top of each reaction tube and controlling the rising velocity of the height of each catalyst bed layer as 10-40 mm / s; (3) measuring the pressure drop of each reaction tube; (4) complementarily filling the catalyst in the reaction tubes with the pressure drop lower than an average pressure drop by 3% and controlling the rising velocity of the heights of the catalyst bed layers with complementary filling as 5-10 mm / s; and (5) detaching the plugging springs of the reaction tubes with the pressure drop higher than the average pressure drop by 8% and discharging the catalyst in the reaction tubes. The method for filling the catalyst in the tube type fixed bed reactor, disclosed by the invention, improves the uniformity of the catalyst filled in the reaction tubes and lowers filling difficulty of the catalyst.

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 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 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 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.