44results about How to "Axially distributed evenly" patented technology

The invention discloses a kind of fixed bed reactor for catalytic reforming and dehydrogenation, the reactor uses a round pressure container which has a catalytic bed. The inlet and the outlet is at one side of the container, the catalytic bed is made up of outer multi-hole wall and round inner multi-hole wall, catalyst is filled in them, there has a cover sealing structure on the catalyst, the round inner multi-hole wall can uses variable hole-rate or zone structure. The reacting gas in the device flows centrifugally, the gas in the centre inner barrel and multi-hole outer barrel flow reversely.

The invention provides a puncture-preventing indwelling needle. The puncture-preventing indwelling needle comprises a catheter base, a needle file, a needle tube and a protection mechanism, wherein the needle file sleeves the catheter base in a sliding manner; the needle tube is mounted to the needle file, and the needle point can penetrate through the catheter base; the protection mechanism is arranged between the catheter base and needle file, and is composed of a protection base and a protection plate mounted on the protection base, the protection base is provided with a protection base body allowing the needle tube to pass through, and an accommodating cavity for accommodating part of the needle tube is formed in the protection base body; the protection plate is provided with a protection plate body, a baffle plate accommodated in the accommodating cavity is formed at one end of the protection plate body, the baffle plate has the first state of pushing against the needle tube and a second state of sheltering the needle point, a support structure is arranged in the accommodating cavity, the support structure applies a supporting force to the needle tube, and the direction of the supporting force is opposite to that of the resisting force applied by the baffle plate. For the puncture-preventing indwelling needle, the support structure applies the supporting force to the needle tube, the direction of the supporting force is opposite to that of the resisting force applied by the baffle plate, so that the needle tube has small possibility of deformation under the pushing and pressing of the baffle plate.

The invention discloses a radial flow-type fixed bed residual oil hydrotreating reactor. The reactor of the present invention mainly comprises members of a housing, a central shaft oil inlet pipe, and a bottom hydrogen distribution disc; in a residual oil hydrogenation reaction process, raw oil mainly flows in a reaction diameter direction in a catalyst bed layer, and reaction supplemented hydrogen flows from bottom to top. The residual oil hydrogenation device of the invention has good operation flexibility, can realize synchronous inactivation of various catalysts, effectively prolongs the running period of the device, and makes full use of the active resources of residual oil hydrogenation catalysts.

The invention provides a cross flow two-channel blower which comprises a spiral casing provided with a wind inlet, a wind outlet and an impeller assembly; the invention is characterized in that a cross section and an outer port of the wind outlet are of parallelograms; the wind outlet is inside provided with three clapboards for dividing a wind channel into an upper wind channel and a lower wind channel with two adjustable longitudinal sections; the cross section of each wind channel is a parallelogram; the wind channel positioned on the upper part is blocked with a cambered sieve vertical tothe wind channel; the sieve is positioned in the middle of the wind channel; the arc length of the sieve is 1/2 to 2/3 of the width of the wind channel; the circle center of the sieve is positioned on one side of the sieve near the outer end of the wind outlet; the upper end of the sieve is fixedly connected with the first clapboard; two sides of the sieve wind on a guide pole vertical to the first clapboard; the lower end of the sieve is inserted into a cambered groove on the second clapboard arranged for the sieve; and the lengths of the three clapboards are less than the distance between the outer end of the wind outlet and an volute angle of the wind outlet. The blower can adjust the wind speed and wind pressure of the two wind channel outlets and has uniform airflow distribution and good working performance.

The invention relates to a feeding device used for screening and conveying a material by utilizing gravity flow, and in particular relates to an integrated feeder. The integrated feeder comprises a shell, and a feeding hole and a discharge hole which are arranged on the shell, wherein the shell is internally provided with a feed roller, a magnetic separation roller and a stone remover; the magnetic separation roller is arranged under the feed roller; a slide carriage is arranged between the magnetic separation roller and the feed roller; the stone remover is arranged under the magnetic separation roller; an air inlet is arranged on the side wall of the shell corresponding to the stone remover; the side wall of the shell is provided with an upper air volume adjustment plate at the inner side of the air inlet; a junk drawer is arranged between the stone remover and the air inlet; and the lower part of the junk drawer is provided with a lower air volume adjustment plate. After the integrated feeder is adopted, iron and steel impurities can be effectively removed; the stone remover is matched with the function of the airflow of the air inlet, so that the impurities with the specific gravity heavier than that of material can be separated from the material; the air speed for separating the material and the impurities can be obtained by the adjustment of air volume adjustment plates, so that the different impurities can be conveniently removed.

The invention discloses a high-roundness cross-linked core medium-voltage power cable and a manufacturing method thereof. The cable is characterized in that three strands of conductive wire bodies arecovered through a polypropylene filling strip at a core part, a shape with a cross section of a round structure is formed, a thickened band is arranged outside the polypropylene filling strip, an inner sheath is arranged outside the band, a steel wire armor is arranged outside the inner sheath, and an outer sheath is arranged outside the steel wire armor. Starting from the entire manufacturing process of the cable, the roundness of conductors is controlled in a conductor production stage, the roundness of the cable is improved by adjusting material, temperature and other process requirementsof a cross-linked polyethylene insulation layer in an extrusion process, a long vulcanization pipe heating mode is designed, a large catenary vertical angle mode is set, a molecular chain structure ischanged to control a drip phenomenon, and the strong guarantee for the high roundness of the entire product is achieved through modes of conductor pre-heating and the like. Under the condition of ensuring basic use of the product, the insulation and roundness of the cable are improved, and thus the service life of the cable is improved.

The invention provides a graphite electrode molding machine, relating to a press machine using a press head. A graphite electrode of the graphite electrode molding machine has a dimension of phi 820-1400 mm. The graphite electrode molding machine is provided with an electrode trolley, a vacuum system, a hydraulic system, an electric control system, a frame, a rubber spring stand, a mold, an upper press head, a material cooling system, an upper trolley, a core column and a central frame, a turnover mechanism, a lower press head and a vibrating motor. A rotating shaft of the mold is arranged on the rubber spring stand; a paste outlet of the material cooling system is connected with the mold by a belt machine; the upper press head and the lower press head are connected with the mold; the upper trolley is arranged on a track of the frame; the upper press head as well as the core column and the central frame are arranged on the upper trolley; the vibrating motor is used as a vibration source and arranged on the two sides of the mold; the vibrating motor is arranged in the middle of the graphite electrode; connecting teeth are arranged on both the upper press head and the mold; the upper press head is connected with the mold after rotating for 15 degrees; the lower press head is fixedly mounted at the lower part of the mold; and the turnover mechanism is connected with the material cooling system.

The invention provides a low-pressure-drop Z-type radial centrifugal flow fixed bed reactor which includes: a cylindrical pressure container, an inner cylinder, an outer cylinder, and a catalyst bed,wherein the inner cylinder, the outer cylinder and the cylindrical pressure container are arranged coaxially. An interlayer is formed between the outer wall surface of the inner cylinder and inner wall surface of the outer cylinder. The catalyst bed is formed by enclosing a lower support seal, the inner cylinder and the outer cylinder; the lower support seal is arranged in the cylindrical pressurecontainer and located on the bottom of same. The inner cylinder is communicated with a gas inlet to form a bypass path of reaction gas. A reaction gas collection flow path is formed between the outerwall surface of the outer cylinder and the inner wall surface of the cylindrical pressure container and is connected to the gas outlet. The bypass path is a diameter-variable flow path. The whole inner cylinder is provided with pores while a part of the outer cylinder is provided with pores. The reaction gas flows from the inner cylinder to the exterior radially via the bypass path and passes through the catalyst bed, then flows into the collection flow path and flows out of the fixed bed reactor through the outer cylinder. In the reactor, the flowing path of the reaction gas is Z-like in shape.

The invention relates to an installing method of a pressing bushing and a structural part. The installing method comprises the following steps of providing a workpiece with a through hole; embedding the pressing bushing in the through hole to form clearance fit between the pressing bushing and the through hole; placing an auxiliary bushing in the pressing bushing to form clearance fit between theauxiliary bushing and the pressing bushing, and forming a gap, which extends in the axial direction of the auxiliary bushing, in the wall of the auxiliary bushing; under the condition that magnitude of interference exists between the diameter of an reinforced rod and the internal diameter of the auxiliary bushing, extruding the auxiliary bushing by the reinforced rod so as to apply extruding forceto the pressing bushing by the auxiliary bushing to form interference fit between the pressing bushing and the through hole; and dismounting the reinforced rod and the auxiliary bushing. The pressingbushing is installed by using the installing method, so that the tangential residual stress of the wall of the through hole in the workpiece is uniformly distributed in the axial direction, and the tangential residual stress caused at the extruding end of the reinforced rod can be eliminated, which can improve the fatigue reinforcing effect of the hole and further prolong the fatigue life of thehole.

The invention discloses a formation machine for a rice cake. In the motion direction of materials, a rack is provided with a hopper, a stirring roller, an extrusion device, a pushing device and a formation device and further provided with a horizontally-arranged hopper conveying belt, a cutting conveying belt and a formation conveying belt, the hopper is located above the hopper conveying belt, and the stirring roller is located above the discharging end of the hopper conveying belt; a feeding port of the extrusion device is located below the discharging end of the hopper conveying belt, a discharging port of the extrusion device is located above the feeding end of the cutting conveying belt, and the cutting device and the pushing device are located above the cutting conveying belt; the feeding end of the formation conveying belt corresponds to the discharging end of the cutting conveying belt, and the formation device is located above the formation conveying belt. The whole productionprocess of the rice cake is fully automatic, automation production of the rice cake is achieved, the production efficiency is greatly improved, the cost is low, the rice cake cannot be sticky to a mold and does not need to be dug out, the time and labor are saved, and the burden of workers is reduced.

The invention discloses a partition plate device of a casting system of a double-roller continuous casting machine. The partition plate device comprises a partition plate, a tundish, a tundish casting passage A, a tundish casting passage B, a tundish partition wall, a partition plate casting passage A, a partition plate casting passage B, a collecting hole A, a collecting hole B, a shunting hole A, a shunting hole B, a lateral wing plate A and a lateral wing plate B, wherein the tundish casting passage A, the partition plate casting passage A, the collecting hole A and the shunting hole A form a molten steel casting passage A; and the tundish casting passage B, the partition plate casting passage B, the collecting hole B and the shunting hole B form a molten steel casting passage B. Underthe condition that the molten steel is not mixed when two kinds of molten steel are solidified on crystallization rollers respectively, the two casting passages and the partition plate are combined together to form a whole; the head can be dipped into the molten steel of a melt bath so as to effectively prevent secondary oxidation of the molten steel; and the collecting holes and the shunting holes are added in the structural design, so impact of the molten steel is reduced, the molten steel is uniformly distributed and the liquid level is stable.

The invention discloses a radial flow fixed bed catalytic reactor for producing oxalate through CO carbonylation coupling. The reactor comprises a cylindrical vessel composed of an upper end socket, acylindrical barrel and a lower end socket in sequence from top to bottom. A reaction gas feeding port, a reaction gas discharging port, a heat exchange medium inlet, a heat exchange medium outlet, acatalyst feeding port and a catalyst discharging port are formed in the outer portion of the cylindrical vessel. The catalytic bed layer is divided into a heat insulation area and a heat exchange areafrom inside to outside, and the heat exchange area is provided with multiple groups of heat exchange tubes which are concentrically arranged in two rows as a group. The radial flow fixed bed catalytic reactor for producing oxalate through CO carbonylation coupling has the characteristics of uniform distribution of reaction gas along the axial direction, reasonable bed layer temperature distribution, high catalyst utilization rate, small reactor pressure drop and the like, is suitable for a reaction for producing oxalate through carbonylation coupling, and is also suitable for other exothermicgas-solid phase catalytic reactions.

The invention discloses a liquid self-acceleration multi-stage supergravity device which comprises a shell, a motor, a rotating shaft, a multi-stage gas channel, a multi-stage guide plate, a multi-stage liquid storage tank, a multi-stage sealing ring, a multi-stage spiral acceleration impeller, a multi-stage liquid distributor, a multi-stage filler, a reflux inlet, a gas outlet, a liquid outlet and a heating coil. According to the multi-stage supergravity device, acceleration of liquid in the liquid distributor is achieved through the design of internal components, uniform distribution of the liquid in the axial direction of the filler is achieved, and the gas-liquid contact efficiency of the multi-stage supergravity device is improved; meanwhile, the equipment investment cost is saved, and the equipment is more simplified.