23results about How to "Thin wall" patented technology

The invention discloses a thin-wall three-period minimal curved surface lattice structure laser additive manufacturing method, which relates to the field of additive manufacturing, and comprises the following steps: (1) according to a three-period minimal curved surface implicit function and additive manufacturing layer thickness, obtaining a single-channel contour path of each layer through direct slicing; (2) generating parallel filling lines in each layer, and intersecting the parallel filling lines with the combination of the contour paths of the layer and the higher layer; (3) combining every two intersection points to form a line segment, and taking the line segment as a filling path if sampling points of the line segment meet the conditions of a functional expression, an inclination angle and a length; (4) taking the filling path of the layer as a supporting layer, and moving the filling path upwards by one layer to form a filling layer; and (5) all the paths are input into additive manufacturing equipment, and different machining parameters are set for manufacturing. The laser path of the thin-wall three-period minimal curved surface lattice structure can be efficiently generated, only one melting channel is contained in the thickness direction of the structure, the wall thickness is smaller than 200 micrometers, and the cavity defect generated in the slicing process can be overcome.

The collector for the EGR cooler comprises an air outlet section, a collecting section and a connecting section, the air outlet section, the collecting section and the connecting section are sequentially connected, and the air outlet section, the collecting section and the connecting section are of an integrated structure. The air outlet section is cylindrical, and the connecting section is of a rectangular structure; an arc-shaped transition structure is arranged at the joint of the collecting section and the air outlet section, an arc-shaped transition structure is also arranged at the joint of the collecting section and the connecting section, and a temperature sensor interface and a differential pressure sensor interface are arranged on the collecting section. The cooler has the technical effects that the cooler can be formed by punching a thin plate, the wall thickness is small, the weight is light, the structure is simple, batch production can be realized, the manufacturing cost is low, arc-shaped transition structures are arranged at the joints of the sections, an internal airflow channel is smoother, the advancing resistance of waste gas in the using process is small, the pressure loss of the cooler can be reduced, and the conveying of the waste gas is facilitated; the collecting section is provided with a temperature sensor interface and a differential pressure sensor interface, so that a temperature sensor and a differential pressure sensor can be connected conveniently.

The invention relates to an outer conductor contact element for a plug connector device, comprising at least one fixed stop which can be engaged behind a cable-side end face of a support sleeve along a longitudinal axis of the plug connector device when the outer conductor contact element is in an assembled state on the support sleeve, the cable-side end face facing away from a front free end of the outer conductor contact element. It is provided that the fixed stop is formed in the outer conductor contact element by means of a positive connector-side edge of a material cut-out provided in the outer conductor contact element, the positive connector-side edge facing towards the front free end of the outer conductor contact element. Alternatively, the fixed stop is formed in the outer conductor contact element by means of a separate stop element which is fastened to an inner wall of the outer conductor contact element. Alternatively, the fixed stop is formed in the outer conductor contact element by means of a punch-formed piece.

This invention provides an adjustable bending medical device. The tube body includes an inner layer, a support layer, and an outer layer sequentially arranged from the inside out. An adjusting member and a reinforcing member are disposed between the inner layer and the support layer, both extending along the axial direction of the tube body. The adjusting member includes a main body segment and an adjusting section connected to the distal end of the main body segment. The distal end of the reinforcing member is aligned with the distal end of the main body segment. In a cross-section perpendicular to the central axis of the adjustable bending medical device, the cross-section of the reinforcing member includes an inner line segment adjacent to the adjusting member, the length of which is less than or equal to half the outer perimeter length of the cross-section of the adjusting member. An operating mechanism is connected to the proximal end of the tube body and is connected to the adjusting member to operate the adjusting member.

The invention relates to a multi-layer brazing composite material which comprises a core material layer, a brazing layer and a middle layer located between the core material layer and the brazing layer, and the alloy of the core material layer comprises, by weight, 0.4%-0.8% of Si, 0.4%-1.2% of Cu, 1.0%-2.0% of Mn, 0.1%-0.6% of Mg, smaller than or equal to 0.5% of Zn, smaller than or equal to 0.7% of Fe and Zirt; 0.15% by weight, Tilt; 0.15 wt%, Cr < lt >; 0.15% by weight, inevitable impurities each having a content of less than 0.05% by weight and a total content of less than 0.2% by weight, and a remainder of Al; the alloy of the middle layer comprises the following components in percentage by weight: 0.2-1.0% of Si, less than or equal to 0.2% of Cu, 1.0-2.0% of Mn, less than or equal to 0.1% of Mg, less than or equal to 2% of Zn, less than or equal to 0.7% of Fe and Zrlt; 0.15% by weight, Tilt; 0.15 wt%, Cr < lt >; 0.15% by weight, inevitable impurities each having a content of less than 0.05% by weight and a total content of less than 0.2% by weight, and a remainder of Al. The multi-layer brazing composite material has the advantages of being low in carbon, environmentally friendly, capable of being lightened, good in mechanical property and high in corrosion resistance.

The utility model discloses a system for obstructing rectum bypass, and relates to the technical field of medical instruments. According to the rectum bypass blocking system, the first balloon and the second balloon are alternately filled, compression on the same indwelling part is avoided, meanwhile, the balloon walls of the high polymer material balloons are thinner, the fit degree between the high polymer material balloons and the intestinal tract is higher, excrement liquid leakage from gaps between the balloons and the intestinal wall is reduced, compression on the rectum part can be effectively reduced, the use comfort is improved, and the rectum bypass blocking system is suitable for popularization and application. In the alternate filling process of the first balloon and the second balloon, after the first balloon is filled, waste liquid and excrement between the first balloon and the second balloon are discharged through the liquid discharging opening, then the second balloon is emptied, excrement leakage in the alternate filling process can be avoided, the catheter is elastically supported through the elastic reinforcing piece, and therefore the smoothness of an inner cavity of the catheter is improved, and the service life of the catheter is prolonged. The catheter body is prevented from collapsing due to prolonged retention time or posture change of a patient during movement, so that drainage of an inner cavity of the catheter is prevented from being blocked.

The utility model belongs to the technical field of pipeline connection, and particularly relates to an electromagnetic induction hot melting joint which comprises a joint body with more than two connecting ends, at least one connecting end of the joint body is provided with a connecting outer pipe and a sealing inner pipe, and the wall thickness of the sealing inner pipe is smaller than that of the connecting outer pipe. An outer electromagnetic induction heat production ring is arranged on the inner ring of the connecting outer pipe, an inner electromagnetic induction heat production ring is arranged on the outer ring of the sealing inner pipe, a plurality of supporting strips are arranged on the inner ring of the outer electromagnetic induction heat production ring in the circumferential direction at intervals, and an air outlet channel is formed between every two adjacent supporting strips. And a gap for inserting a pipeline is reserved between the supporting strip and the sealing inner pipe. The connecting strength of the pipe joint and the pipeline is high, and the sealing effect of the pipe joint and the pipeline is good; and meanwhile, gas generated in the melting process can be effectively exhausted, the connector and the pipeline are firmly connected, the pipeline is not prone to being separated, and the connection reliability is good.

The utility model provides a fixing assembly and a battery pack, and relates to the technical field of batteries. The fixing assembly is used for fixing a shell of a battery pack, the fixing assembly comprises a bracket and a bundling piece, the bracket is detachably connected with the bundling piece, and at least one of the bundling piece and the bracket is a telescopic piece; when the fixing assembly is installed on the shell, the bracket is connected with the bundling piece, the bundling piece and the bracket are attached to the outer side wall of the shell, and the telescopic piece is in an extension state, so that the fixing assembly can apply force to the shell. Therefore, force is applied to the shell through the fixing assembly, the pressure endurance capability of the shell can be improved, the wall thickness of the shell can be thinner, the mass of the shell is smaller, and the light weight of the battery pack is favorably realized.

The utility model discloses a reinforced obstructing rectum bypass system, which relates to the technical field of medical instruments and comprises a catheter, a drainage tube is arranged at the upper end of the catheter, an excrement collecting bag is arranged at the left end of the drainage tube, a balloon is arranged at the lower end of the catheter, an injection tube and a medicine injection tube are arranged in the wall of the catheter, and the drainage tube and the medicine injection tube are communicated with each other. A water injection pipe is arranged on the inner side wall of the catheter, and one end of the water injection pipe is communicated with the inner side of the balloon. According to the reinforced rectal bypass blocking system, compared with a PVC material and a silica gel material, the high polymer material of the balloon has the advantages that the balloon wall of the balloon made of the high polymer material is thinner, the fitting degree with the intestinal tract is higher, the situation that excrement liquid leaks from a gap between the balloon and the intestinal wall is reduced, compression on the rectal part can be effectively reduced, the use comfort is improved, and the system is suitable for popularization and application. The elastic reinforcing piece in the catheter elastically supports the catheter, so that the smoothness of an inner cavity of the catheter is improved, and the situation that drainage of an inner cavity of a pipeline is blocked due to the fact that a catheter body collapses due to prolonged retention time or posture change of a patient during movement is avoided.

The application relates to the technical field of endoscopes, in particular to a guide element, a multi-lumen tube assembly and an endoscope, which comprises a base and a first insertion part, the first insertion part is used for being arranged in a working channel of a multi-lumen tube to realize sealing cooperation with a proximal port of the working channel, a guide cavity is arranged on the base and is used for arranging a traction rope. Based on the protection of the partition wall of the traction rope channel by the guide cavity on the guide element, the cooperation of the first insertion part and the working channel on the multi-lumen tube, the structural stability can be improved, the local damage of the multi-lumen tube caused by the stress concentration of the traction rope channel can be avoided, under the same structural strength of the multi-lumen tube, the wall thickness of the multi-lumen tube can be designed to be thinner, the passing performance of the insertion part and the production cost of the endoscope are considered, long-term protection of the multi-lumen tube is realized, the attenuation speed of the directional bending control precision of the insertion part is slowed down, and the long-term stability of the bending control structure and the operation feeling of the endoscope is ensured.

The utility model relates to a battery pack lower box body, a battery pack and electric equipment, the battery pack lower box body comprises a box body bottom plate, the upper surface of the box body bottom plate is provided with a plurality of reinforcing ribs which are arranged side by side and play a supporting role, and a smoke exhaust channel I is formed between any two adjacent reinforcing ribs. According to the utility model, the reinforcing ribs for supporting the battery cells are arranged on the box body bottom plate of the lower box body of the battery pack, and bearing structures such as a plastic base and the like which are required when the traditional cylindrical battery cells are grouped are integrated with the box body bottom plate, so that the plastic base can be cancelled when the battery pack is grouped, the types of parts are reduced, the assembly procedures are reduced, the production takt is improved, and the production efficiency is improved. The assembling efficiency in the battery pack grouping process is improved; meanwhile, the plurality of reinforcing ribs form a grid structure at the bottom of the lower box body, the impact strength of the bottom of the battery pack is improved, and the wall thickness of the box body bottom plate of the lower box body can be thinner due to the grid structure at the bottom of the lower box body, so that the light weight of the battery pack is realized.

The present invention relates to the technical field of start-stop reactors, and in particular to a 600MW multi-module high temperature reactor start-stop system, including multiple steam generators, steam turbines, condensers and start-stop reactor expansion tanks, each of the steam generators is connected to the main steam main pipe through a main steam pipeline and then enters the steam turbine in two ways; a start-stop reactor pipeline is led out from the main steam pipeline of each steam generator and connected to the start-stop reactor expansion tank; each steam generator leads out a main steam bypass pipeline after leading out the start-stop reactor pipeline and is connected to the condenser, and each main steam bypass pipeline is provided with a bypass regulating valve. The present invention reduces the number of steam-water separators by setting a common start-stop reactor expansion tank; a start-stop reactor expansion tank is set on the side of the condenser, and due to its low pressure and thin wall thickness, no special cooling or insulation system is required, the system is simple, and the footprint is small; the main steam bypass valve is set for a single stack and led out from the main steam pipeline, and the control logic is relatively simple and clear.

According to the grain leveling driving wheel mounting structure of the grain leveling robot, an output shaft (2) is provided with a guide supporting rod (3), a grain leveling driving wheel (1) is connected with the guide supporting rod (3) in a sleeved mode, and one end of the output shaft (2) is provided with a first part (4) of a detachable axial concave-convex insertion matching structure; a second part (5) of a detachable axial concave-convex insertion matching structure is arranged at the end, located on one side of the output shaft (2), of the grain leveling driving wheel (1), and when the grain leveling driving wheel (1) is connected with the guide supporting rod (3) in a sleeved mode, one end of the output shaft (2) is in transmission connection with one end of the grain leveling driving wheel (1) through axial concave-convex insertion matching between the first part (4) and the second part (5). The guide supporting rod (3) is provided with an axial limiting piece (6) so that the grain leveling driving wheel (1) can be axially limited between one end of the output shaft (2) and the other end of the grain leveling driving wheel (1). According to the invention, the installation convenience is high and the light weight is facilitated.

The application discloses a monolithic structure ceramic filter plate for low-grade iron concentrate dewatering and a preparation method thereof, and belongs to the technical field of ceramic filter plates.The application is characterized in that: a ceramic 3D printing material is prepared, and a double-head double-precision 3D printer is used to layer-by-layer print a monolithic structure ceramic filter plate base body; the base body mud blank is dried and fired, coated and fired again, and then a water outlet nozzle and a positioning hole are installed to obtain the monolithic structure ceramic filter plate for low-grade iron concentrate dewatering.The application reduces the surface roughness of the monolithic structure ceramic filter plate, improves the corrosion resistance and service life; the 3D printing technology is used to make the inner cavity of the monolithic structure ceramic filter plate have better symmetry, reduce the corrosion and damage caused by the too thin side of the filter plate, and the unique inner cavity column design has higher water flux under the premise of ensuring the strength of the base body, and the resistance caused by the reduction of the micro-pore diameter is compensated.

The present invention relates to a production method of a thin-walled low-smoke and halogen-free dry loose tube. This technical solution optimizes the die drawing ratio, reduces the head pressure, and makes the discharging uniform and balanced. When producing a large number of cores, through the methods of optical fiber segmentation and decreasing tension, the loose tube does not bend or twist, avoiding the situations of snake shape, S shape, and inconsistent extra length. The loose tube produced by this technical solution has good molding, smooth appearance, uniform wall thickness, thin tube wall, and small shrinkage of the tube sheath. Moreover, it is a dry structure without grease filling, the tube wall thickness is very thin, with a minimum of 0.13 mm. This technical solution has a large optical fiber capacity, low cost, and is convenient for large-scale popularization and application.

The utility model discloses an optical glass polyhedral tube sleeve structure hot press, which comprises a hot press body bottom plate, an electric connection base and a temperature control electric heating rod, the electric connection base is fixedly mounted on the top surface of the hot press body bottom plate in an embedded manner, and the temperature control electric heating rod is fixedly mounted on the electric connection base in a surrounding manner; a supporting side plate is fixedly installed on the outer side of the top face of the hot press body bottom plate, a reinforcing top plate is arranged at the top end of the supporting side plate, an adjusting center stand column is installed in the center of the reinforcing top plate in a penetrating mode, and a handle frame is arranged at the top end of the adjusting center stand column. According to the optical glass polyhedral cylinder sleeve structure hot press, after a product is placed in the workpiece containing groove in the center of the cylinder sleeve combination body, rapid heating is conducted through the temperature control electric heating rod subsequently, meanwhile, the product slides downwards into the workpiece containing groove according to the bearing square block body, gravity pressure applying can be conducted on the interior, hot pressing machining work is facilitated, and the overall pressure applying structure is simple.

The invention discloses a micro hemisphere coating jig which comprises a positioner, a clamp and a driving assembly connected with the clamp, a counter bore for accommodating a micro hemisphere is formed in the top surface of the positioner, a mask cavity matched with the lip edge surface of the micro hemisphere is formed in the counter bore, and the part, without being coated, of the surface of the micro hemisphere extends into the mask cavity for masking. The fixture comprises a tip cone part, the tip cone part penetrates through the bottom of the positioner and then extends into the mask cavity, the tip cone part comprises a plurality of tip cone blocks, and the driving assembly is used for driving the fixture to be opened and closed, so that the plurality of tip cone blocks are folded to extend into the anchor column cavity of the micro hemisphere, or the plurality of tip cone blocks are dispersed to abut against the cavity wall of the anchor column cavity of the micro hemisphere in the mask cavity. The method can ensure that the surface quality of the micro hemisphere is not damaged while meeting the requirements of clamping and masking at the same time.

This utility model relates to a pipeline machine, including a housing. The housing contains a water tank, an inlet pipe, an outlet pipe, and a heating system. The inlet pipe is connected to the water tank. The heating system includes a water pump connected to the water tank and a heating element connected to the outlet pipe, with the water pump and heating element also connected. The key feature is that a bracket is fixedly installed on the inner wall of the housing. The water pump, heating element, and outlet pipe are all mounted on this bracket. The bracket and the inlet pipe are positioned alternately on either side below the water tank. The advantages are: firstly, by mounting the water pump, heating element, and outlet pipe on the bracket, the installation of these components is more convenient and the layout is neater, resulting in a compact installation of all parts; secondly, by positioning the inlet pipe and bracket on opposite sides below the water tank, the inlet and outlet components are separated, leading to a neater overall spatial layout.

The invention discloses a soft tool forming method for accurate positioning of a complex curved surface of a resin-based carbon fiber composite material part, which comprises the following steps of: performing digital-analog segmented blanking and paving of a reinforcing material on the resin-based carbon fiber composite material part with the complex curved surface to prepare a soft tool, drilling a plurality of blind holes in the surface of the soft tool through machining, and forming a plurality of holes in the surface of the soft tool. The flexible tool is matched with laser projection for precise positioning, so that the matching reference of the flexible tool and the resin-based carbon fiber composite material part before and after positioning is unified, the problem that the flexible tool is prone to positioning deviation is solved, and it is ensured that the position of the flexible tool is fixed and does not deviate in the forming process of the resin-based carbon fiber composite material part; therefore, the surface forming quality, the position precision and the internal quality of the resin-based carbon fiber composite material part are guaranteed, the qualified rate of production of the resin-based carbon fiber composite material part can be effectively improved, and the production efficiency is improved.

The utility model discloses a partition type sand core weight reduction core box mold tool which comprises a core box base, a sand core partition device is fixedly arranged on the core box base, a core box left mold and a core box right mold are arranged on the two sides of the sand core partition device, a sand core left mold cavity is formed in the core box left mold, and a sand core right mold cavity is formed in the core box right mold. The core box left mold and the core box right mold are respectively supported on the core box base after being closed, and sand core forming gaps are respectively formed between the core box left mold and the sand core partition device as well as between the core box right mold and the sand core partition device after being closed; due to the fact that the sand core partition device is arranged, the formed sand core is hollow, the wall thickness is small, the weight reduction effect of the sand core is greatly improved, in addition, the using amount of core sand is greatly reduced, the machining cost is reduced, the sand core with the weight reduced is more convenient to set, carry and transfer, the labor intensity of workers is reduced, and operation is convenient.

This invention belongs to the field of fuel cell thermal management technology, and particularly relates to a battery cooling system and its control method based on a microtube bundle heat exchanger and countercurrent collision jet atomization. The system includes: a fuel cell stack, a microtube bundle heat exchanger connected to the fuel cell stack via a coolant circulation loop, a cathode drainage recovery unit, and a countercurrent collision jet atomization unit comprising a fan and an atomizing spray module. The fan, atomizing spray module, and microtube bundle heat exchanger are arranged sequentially. The airflow direction generated by the fan rotation and the direction of the water mist sprayed by the atomizing spray module are opposite to each other, so that the water mist sprayed by the atomizing spray module initially moves towards the direction of the fan. After its speed decreases to zero, it is driven by the airflow generated by the fan to move in the opposite direction and flows through the gaps within the microtube bundle heat exchanger, serving as shell-side fluid to cool the tube-side fluid within the microtube bundle heat exchanger.

The invention relates to a building material of a phase-change difunctional microcapsule prepared based on needle-based microfluidics and application of the building material, raw materials of the material comprise a difunctional microcapsule and gypsum, and the addition amount of the difunctional microcapsule in the gypsum is 1-5wt%. The difunctional microcapsule prepared by the specific process has temperature regulation capability, namely heat regulation function and energy, and in radiation heating and natural cooling experiments, a building embedded with the microcapsule shows higher thermal inertia than a building without the microcapsule, so that the building has higher thermal inertia. Therefore, the indoor and outdoor temperature change of the building with the microcapsule is more gentle, especially in the melting stage or solidification stage of the microcapsule; especially in the phase change process of the microcapsule, obvious latent heat transfer occurs, so that the temperature change of a building in which the microcapsule is placed is more stable in the heating and cooling processes.

The utility model relates to the technical field of aluminum profiles, and discloses a bending-resistant aluminum profile. Comprising an aluminum profile body, the section of the aluminum profile body is rectangular, a rectangular hole is formed in the inner wall of the middle of the aluminum profile body, auxiliary bending-resistant assemblies are symmetrically arranged in the rectangular hole in the vertical direction, and each auxiliary bending-resistant assembly comprises horizontal reinforcing rib plates symmetrically and fixedly connected to the inner side wall of the rectangular hole; the width of the two horizontal reinforcing rib plates is the same as the width of the inner diameter of the rectangular hole, vertical reinforcing rib plates are fixedly connected between the surfaces of the two horizontal reinforcing rib plates and the inner side wall of the rectangular hole, and the multiple vertical reinforcing rib plates are arranged at intervals. The wall thickness of the aluminum profile body is small, so that the overall weight of the aluminum profile body is reduced, the horizontal reinforcing rib plates and the vertical reinforcing rib plates are matched, stress is even, and balance of light weight and high rigidity is achieved.