62results about How to "Eliminate deformation" patented technology

The invention provides a trademark identification method and system based on an anti-counterfeiting code, and relates to the technical field of anti-counterfeiting identification, and the method comprises the steps: obtaining a to-be-identified trademark image, carrying out the preprocessing, generating a corresponding anti-counterfeiting code through employing an anti-counterfeiting code generation algorithm based on chaotic encryption, and embedding the generated anti-counterfeiting code into a standard trademark image, obtaining a trademark image carrying an anti-counterfeiting code, and carrying out code positioning on the trademark image to obtain a standardized anti-counterfeiting code image; decoding the standardized anti-counterfeiting code image to obtain an original bit stream of the anti-counterfeiting code, and verifying the validity of the original bit stream through Hash verification to obtain an anti-counterfeiting code verification result; and judging the authenticity confidence coefficient of the to-be-identified trademark image by using a pre-trained trademark authenticity judgment model, and outputting a final trademark identification result based on the anti-counterfeiting code verification result and the authenticity confidence coefficient of the to-be-identified trademark image in combination with a pre-acquired multi-source heterogeneous trademark identification evidence.

The invention provides a skin shape detection tool and a skin shape detection method. The skin shape detection tool comprises a basic platform, a skin supporting assembly, an external force applying mechanism and a skin shape detection mechanism. The skin supporting assembly comprises a plurality of skin supporting pieces which are separated from one another and detachably installed on the foundation platform, and each skin supporting piece is provided with a supporting face consistent with the theoretical appearance of a skin. The external force applying mechanism is used for pressing the skin on the skin supporting piece; the skin shape detection mechanism is used for acquiring molded surface deviation data of the skin, and the molded surface deviation data is a deviation value between the actual shape and the theoretical shape of the skin; due to the fact that the basic platform and the skin supporting assembly are arranged in a split mode, appearance detection of different types of skins can be met only by replacing different skin supporting assemblies, and economy and flexibility of skin appearance detection are improved.

The low-stress transfer and groove protection device comprises a supporting ring, a plug block, a lower cross-shaped support, a stand column, an upper cross-shaped support, an ejector rod and a lifting lug, the plug block is assembled in a groove in the supporting ring, the lower cross-shaped support is arranged in the supporting ring, the stand column is arranged at the upper end of the lower cross-shaped support, and the ejector rod is arranged at the lower end of the lower cross-shaped support. An upper cross-shaped support is arranged at the upper end of the stand column, an ejector rod is assembled in a through hole of the stand column, and a lifting lug is arranged at the upper end of the upper cross-shaped support; the cylinder structure installed in the groove of the supporting ring is positioned through the plug block, the ejector rod spirally extends to abut against the inner wall of the cylinder structure, the cylinder structure is made to be in linkage with the device, and then the cylinder structure is transferred by lifting the lifting lugs of the device. The device is easy to operate, convenient to disassemble, assemble and maintain and high in safety, welding of the cylinder structure is avoided, and the adverse effect that the cylinder structure deforms or the manufacturing precision is reduced due to assembling and welding of the lifting lugs is effectively eliminated.

The utility model relates to a kind of wire controllers, belong to air conditioner accessories field.It includes back cover (22) and metal mounting plate (21), metal mounting plate (21) middle part is equipped with wire harness perforation (214), wire harness perforation (214) both sides are equipped with mounting hole (212), wire harness perforation (214) top is equipped with clamping hook (211), back cover (22) back side wall is equipped with clamping groove (223), metal mounting plate (21) is connected with back cover (22) by clamping hook (211) and clamping groove (223).Through metal mounting plate (21) eliminates deformation problem when fastening, avoid only fastening after disassembling back cover (22).Through clamping hook (211) and clamping groove (223) realize metal mounting plate (21) and back cover (22) connection, improve installation and disassembly efficiency.Solve existing back cover (22) fastening easy deformation, cause repeated disassembly and repeated installation, increase installation difficulty problem.

The application relates to the field of mechanical manufacturing and automatic assembly, in particular to a fan support bearing head device and a method thereof; the device comprises a rack base, a composite spindle, a micro boring cutter, a glue injection head and a control and detection unit; the device receives detection signals through the control unit and drives each component, so that the outer pipe of the composite spindle drives the micro boring cutter to cut grooves under the driving of a fixed cam, and the inner pipe synchronously cooperates with the glue injection head to inject glue; the core is that the cooperative operation of material removal processing and fluid filling is realized in the same device, so that the solidified glue and the micro groove form mechanical interlocking; the device replaces the traditional physical extrusion mode, eliminates the assembly stress and bearing deformation caused by radial extrusion from the physical mechanism, effectively improves the fixing reliability of the axial thrust, and effectively captures the debris by using the negative pressure cavity to suck air flow, and completely solves the pollution problem of the assembly surface.

The utility model discloses an anti-deformation device for welding an anti-explosion valve of a battery cover plate, and belongs to the field of welding of battery cover plates. Comprising a supporting seat, a base, a pressing plate, a pressing block and a power assembly. By arranging the base and the pressing plate with the pressing block, during welding, the pressing plate drives the pressing block to move downwards, so that the pressing block is matched with the base to firmly press and fix the substrate, controllable downward pressure is applied in real time in the welding process, deformation caused by thermal stress is actively counteracted, and therefore the situation that the substrate deforms in the welding process can be effectively prevented; and correction treatment after deformation is not needed. Therefore, the flatness deviation of the substrate after the explosion-proof valve is welded can be ensured to be less than or equal to 0.1 mm, and the explosion pressure stability (deviation lt; 5%). And the contact area of the substrate, the base and the pressing block is guaranteed, the heat dissipation efficiency can be guaranteed, stress residues caused by cold and hot changes in the welding process are greatly reduced, and deformation in the subsequent use process is avoided.

This application relates to the field of flexible printed circuit board (FPCA) inspection technology, and discloses a multi-region targeted algorithm fusion detection method for FPCA. The method includes: acquiring the image to be inspected, extracting process reference points and estimating the nonlinear deformation field, and performing geometric correction on image block features; orthogonally decoupling the corrected features into semantic direction components and interference amplitude components, discarding the interference amplitude components; performing weighted similarity matching between the semantic direction components and a weighted memory stored according to preset weights of functional regions to obtain anomaly scores; fusing multi-scale anomaly scores and comparing them with a threshold to output the detection results. This application eliminates deformation and illumination interference through a dual mechanism of geometric correction and feature decoupling, and improves the detection capability of minute defects by combining a functional region weighted memory with multi-scale fusion, achieving a significant improvement in detection accuracy and robustness.

The utility model belongs to the tunneling machine technical field, concretely relates to a protection structure of cantilever tunneling machine for tunnel excavation, including tunneling machine main part, the tunneling machine main part is fixedly installed with the connecting frame, the one end of connecting frame is fixedly connected with the scraper blade away from tunneling machine main part, the scraper blade is rotatably connected with the soil sweeping disc, the downside of connecting frame is provided with the conveying mechanism, be provided with the protection assembly on the conveying mechanism. The protection structure of cantilever tunneling machine for tunnel excavation uses the use of protection assembly, motor drives oval wheel rotation, drives straight pole reciprocating motion, makes the flattening plate left and right movement and sticks to the surface of conveyer belt, and the broken stone and broken soil concentrated in the middle are spreaded to both sides, cooperate the partition board on the conveyer belt, can form the regular material heap, avoid the material protruding scratch tunneling machine chassis. This dynamic flattening design can effectively eliminate the deformation of conveyer belt due to local extrusion, prolong the service life of conveyer belt, reduce the equipment failure caused by scratching.

The utility model discloses a small line diameter petal spring hot press setting device relates to petal spring production and processing technical field, solved the problem that petal spring is easy to have thermal shrinkage deformation in annealing process. The hot press setting device includes: install lower die install lower die and include mounting panel and a plurality of vertical fixed limit rod on mounting panel, a plurality of limit rods can respectively along the outer contour and the inner contour distribution of petal spring, to form the limiting area for limiting a plurality of superimposed petal spring between a plurality of limit rods, press mechanism, press mechanism includes a plurality of can go up and down the press needle, a plurality of press needles all are located the just above of limiting area, and along the locus shape distribution of petal spring. The device can be compacted and positioned a plurality of superimposed petal spring on install lower die, make petal spring be in the stress annealing of laminated pressure and go, can completely eliminate the deformation in the heating process, guarantee product quality, realize batch production.

The gearbox combined type bearing comprises an outer ring and a clamping ring which is used for being arranged on the outer ring in a sleeving mode after being heated through a heating technology, and a containing groove is formed in the peripheral wall of the outer ring in the circumferential direction; a boss which is used for being close to an opening of the containing groove after being heated through a heating process and being pressed into the containing groove through external pressure equipment when the clamping ring is cooled is annularly arranged on the inner circumferential wall of the clamping ring, and a first limiting structure used for limiting the boss to be separated from the containing groove is arranged on the right side of the containing groove. The left side of the containing groove is provided with a second limiting structure used for limiting the boss from being separated from the containing groove. The problems that when a traditional clamping ring and a bearing outer ring are assembled, manual assembling is needed, the assembling precision is low, the assembling efficiency is poor, and the clamping ring and the bearing outer ring are prone to being separated are solved.

The utility model discloses a sample plate piece cart, which relates to the technical field of carts, and comprises a frame, a support assembly and a roller assembly, the support assembly comprises a plurality of first support rods, a plurality of second support rods and two adjusting rods arranged on the frame at intervals along the length direction of the frame, the number of the first support rods is more than one, and the number of the second support rods is more than one. The number of the first supporting rods is equal to that of the second supporting rods, the first supporting rods are arranged on one adjusting rod at intervals in the height direction of the frame, and the second supporting rods are arranged on the other adjusting rod at intervals in the height direction of the frame. The first supporting rod and the second supporting rod located at the same height are used for supporting the two ends of the sample plate piece correspondingly. The roller assembly is arranged at the bottom of the frame. By arranging the first supporting rods and the second supporting rods which are arranged in the vertical direction, the sample plate pieces can be stacked in a layered mode, contact between the sample plate pieces is eliminated, and therefore the situation that the sample plate pieces deform due to gravity extrusion is eliminated.

The invention provides a flow battery bonding and sealing structure, a first sealant, a second sealant and a preparation method, in the flow battery bonding and sealing structure, a main body plate frame, a bipolar plate and a compression ring are sequentially bonded to form an integrated plate frame component, the main body of the main body plate frame is a rectangular annular plate, and the first sealant and the second sealant are bonded to form the integrated plate frame component. A liquid inlet flow channel is formed in the edge of the first surface of the rectangular annular plate and is used as a sealing groove; an outer sealing groove is also formed in the first surface of the rectangular annular plate outside the liquid inlet flow channel; sealing structures are arranged at the positions, corresponding to the liquid inlet flow channel and the outer sealing groove, of the second surface of the rectangular plate. According to the bonding and sealing structure of the flow battery, the problems of stress concentration and deformation caused by inconsistent expansion coefficients of different materials are solved, the problem of material compatibility does not exist, and the fusion welding effect can be achieved; according to the invention, the sealing leakage problem is thoroughly eliminated, and the reliability and long service life requirements of the flow battery are ensured.

The invention discloses an integrated mechanism for producing a square battery, and relates to the field of battery production, the integrated mechanism comprises an integrated welding, conveying and overturning mechanism, the integrated welding, conveying and overturning mechanism comprises a lifting type conveying chain located on a conveying table, and conveying limiting mechanisms are arranged on the two sides of the top of the lifting type conveying chain in an opposite supporting mode; the conveying limiting mechanism is provided with a turnover mechanism, the turnover mechanism comprises a supporting assembly, a driving assembly, a turnover push-in assembly, a turnover push-out assembly and a clamping assembly, the assembly line production integration degree is high, the occupied area is small, the equipment cost is low, the process of back-and-forth conveying and turnover during welding is omitted, the production efficiency is high, and the production efficiency is high. After welding of one side is completed, pushing-in, overturning and pushing-out are directly conducted for welding of the other side, the process of back-and-forth conveying and overturning is omitted, and the precision of double-side welding connection is ensured; the turnover mechanism can be installed in an area with a limited space, so that the utilization rate of the space is improved.

The utility model relates to an injection mold, in particular to an injection mold capable of eliminating glue inlet impact, which comprises an upper mold and a lower mold matched with the upper mold, and an injection runner is formed between the upper mold and the lower mold; a plurality of pitched roofs are arranged on the lower mold, pitched roof runners communicated with the injection molding runner are formed on the pitched roofs, and the pitched roof runners are further communicated with a glue inlet formed in the upper mold; the angle ejector mechanism is connected with the angle ejector, and during demolding, the angle ejector is ejected out along with a product under the action of the angle ejector mechanism; and the flow-in direction of the inclined top runner from the glue inlet is vertical to the injection direction of the glue inlet. Due to the arrangement of the pitched roof, the glue inlet and the pitched roof runner are kept in a vertical state, injection molding materials entering from the glue inlet cannot directly impact the surface of a product, the problem that water waves are generated on the surface of the product or the product is deformed can be effectively reduced, and the appearance and quality of the product are effectively improved.

The invention discloses a film clamping device capable of guaranteeing film planeness, which comprises a rectangular base, stand columns are arranged on the lower wall surface of the rectangular base and close to four corners, a base plate is fixed on the lower wall surface of each stand column, a rectangular frame is arranged on the rectangular base, a film conveying structure is arranged in the rectangular frame, and a film clamping mechanism is arranged on the rectangular frame. A limiting clamping structure is arranged on the rectangular frame. The thin film clamping device relates to the technical field of thin film clamping for thin film planeness, and has the beneficial effects that a thin film is heated through a hot water circulating system in a thin film conveying structure, so that the thin film is heated uniformly, the stress and deformation of the thin film are effectively eliminated, and the planeness of the thin film is improved; and the limiting clamping structure can stably clamp and limit the thin film, so that the thin film is prevented from deviating in the conveying process, and the processing quality of the thin film is guaranteed.

This utility model relates to the technical field of sheet metal flattening devices, specifically a sheet metal flattening device for sheet metal processing. It includes a processing table, a support fixedly mounted on the surface of the processing table, an electric actuator fixedly mounted on the surface of the support, a pressure plate fixedly mounted at the output end of the electric actuator, a fixed plate fixedly mounted on the processing table relative to the pressure plate, a sheet metal sheet slidably connected to the upper surface of the fixed plate, a fixed frame fixedly mounted on the upper surface of the processing table, a sliding plate slidably connected to the inner wall of the fixed frame, an upper heat insulation plate fixedly mounted on the surface of the sliding plate, and a heating plate fixedly mounted on the surface of the upper heat insulation plate. This utility model, by setting up the fixed frame, sliding plate, upper heat insulation plate, and heating plate, can preheat the heating plate before applying pressure to the sheet metal sheet, preventing the sheet metal sheet from springing back after pressure is applied and effectively eliminating sheet metal sheet deformation.

The invention relates to an energy-saving boiler superheater and a small-radius U-shaped T91 alloy pipe bending process thereof in the technical field of energy-saving boilers. The energy-saving boiler superheater comprises the steps that S1, annealing treatment is conducted before bending; s2, first cold roll forming treatment; s3, heating extrusion temperature control; s4, extruding, finishing and forming; and S5, normalizing and tempering heat treatment. In the T91 alloy pipe bending process, the relative bending radius R1 of the T91 alloy pipe is set to be 1.5 times smaller than the outer diameter of the pipe in the first cold bending process, then the bending radius R2 is 0.6-1.1 times of the outer diameter of the pipe through the extrusion finishing forming process, and the bent elbow part is uniform in deformation and smooth in transition through progressive deformation control; and the problems of goose egg-shaped deformation and the like are solved.

The utility model relates to the field of welding processing, in particular to a chromatic-aberration-free large-size thin-wall aluminum alloy part FSW manufacturing device which comprises a welding station, a shape correcting station and a polishing station which are sequentially arranged in the section bar processing direction. The welding station comprises a base used for fixing the profiles, a positioning block and a clamping block are arranged on the base in parallel, the clamping block and the positioning block can move in opposite directions to clamp the profiles to be welded, and the welding station further comprises pressing blocks which apply pressing actions from top to bottom to the two profiles respectively. After being pressed, the two profiles are welded through a static shaft shoulder friction stir welding device; the shape righting station comprises an upper shape righting wheel and a lower shape righting wheel, and a gap is formed between the wheel face of the upper shape righting wheel and the wheel face of the lower shape righting wheel so that welded profiles can pass through the gap. According to the utility model, the welded large-size section bar is uniform and consistent in appearance and has no color difference, and the production requirement is met.

The invention provides a warping horizontal shooting device and a working method thereof, and belongs to the technical field of flat glass substrate inspection.The warping horizontal shooting device comprises a warping glass back plate parallel to the ground, a pneumatic ejector block is arranged on the warping glass back plate, a supporting sectional material is installed at the bottom of the warping glass back plate, and a plurality of stand columns are installed outside the warping glass back plate; a grating plate is installed at the top of the stand column, the plate face of the grating plate is flat and free of light reflection, the grating plate comprises a curtain plate, grating curtain plate grid paper is attached to the curtain plate through the pasting position of the grating curtain plate grid paper arranged on the side portion, camera installation holes are formed in the grating plate, and a plurality of steel ropes are fixed to the grating plate. According to the device, bottom deformation can be eliminated, warping shooting accuracy is ensured, the device is suitable for a large board, the warping shooting effect is greatly optimized, the requirement for manual operation and the time cost are reduced, and therefore the warping shooting accuracy is remarkably improved, and the detection and transfer efficiency is improved.

The application discloses a manufacturing method of FR4 and PTFE mixed voltage circuit board, comprising the following steps: cutting, baking, inner layer dry film, inner layer AOI, pressing, mechanical drilling, plasma glue removal, copper deposition, pulse electroplating, single-side copper reduction, outer layer circuit, outer layer etching, outer layer AOI, solder mask, post-process, between the plasma glue removal and the copper deposition, there is a baking plate process for eliminating stress in the circuit board blank and eliminating moisture in the PTFE material again, between the outer layer AOI and the solder mask, there is a UV machine process for further eliminating moisture in the PTFE material and making the resin material shrink.

The invention discloses a long-baseline deep-sea binocular measurement camera which comprises a control cabin, a deep-sea camera and a double-rod supporting assembly. The control cabin is used for camera control and a storage circuit; pressure-resistant fastening assemblies are symmetrically mounted at the two ends of the control cabin; the number of the deep sea cameras is two. The two deep sea cameras are installed at the ends, away from the control cabin, of the two pressure-resistant fastening assemblies correspondingly. The optical axes of the two deep sea cameras are located on the same plane, and the included angle between the two optical axes is 180 degrees to 2 alpha. The two deep sea cameras are electrically connected with the control cabin; the double-rod supporting assembly is installed between the two deep sea cameras. According to the invention, the binocular measurement camera has a long base line, can obtain a large public field of view, is small in deformation and stable in structure in a deep sea high-pressure environment, guarantees the constancy of internal and external parameters of the binocular measurement camera in the measurement process, and improves the measurement precision and accuracy.

The invention relates to the technical field of batteries, in particular to a battery pack bottom support. The battery pack bottom support is used for bearing a battery pack and comprises at least two trays and connecting pieces, a split gap is formed between any two adjacent trays, any tray comprises a frame body, a reinforcing part and a connecting part which are integrally formed, the frame body is used for being connected with a girder of a vehicle, the reinforcing part is arranged in the frame body, and the connecting pieces are arranged on the frame body. Part of the connecting part is arranged on the frame body, the other part of the connecting part is arranged on the reinforcing part, and the connecting parts are used for connecting the battery pack; and the connecting pieces are positioned in the split gaps, are connected with any two adjacent frame bodies, and are used for connecting the battery packs. According to the battery pack bottom support, the at least two split type sub-trays are obtained through integrated die casting, so that the battery pack bottom support can adapt to various vehicle girder specifications, and the mold opening cost is reduced while the structural consistency of the battery pack bottom support is improved.

The invention discloses an active air inlet sealed type feeding system for a radioactive waste pyrolyzing furnace. The active air inlet sealed type feeding system comprises a turning plate overturning structure and a hopper overturning structure. The turning plate overturning structure comprises an upper shell and a turning plate capable of being opened and closed, and the turning plate is installed in the upper shell; the hopper overturning structure comprises a lower shell and a rotatable hopper, and the hopper is installed in the lower shell. When the turning plate and the hopper are both located at the closed position, preset gaps are formed between the turning plate and the upper shell, and preset gaps are formed between the hopper and the lower shell. When the turning plate and the hopper are both in the closed position, the negative pressure in the pyrolyzing furnace enables external air to flow into the furnace through the preset gap, and air flow from outside to inside is formed and used for cooling the hopper and preventing tar in pyrolyzing gas from being adhered.

The utility model provides a steam heater, and relates to the technical field of heaters. The steam heater comprises a shell and a heat exchange assembly arranged in the shell, and the heat exchange assembly is installed in the shell through a buffer assembly; the buffering assembly comprises a supporting column, one end of the supporting column is connected with the shell, and the other end of the supporting column faces the heat exchange assembly. The buffer spring is arranged between the supporting column and the heat exchange assembly; when a medium needing heat exchange enters the shell, the heat exchange medium makes contact with the medium needing heat exchange through the heat exchange assembly, and in the contact process, the heat exchange assembly eliminates thermal stress in the heat exchange process through the buffer spring. In order to ensure the stable operation of the heat exchange assembly, the lower end of the heat exchange assembly is supported by the buffer spring, so that the stress of the heat exchange assembly is released in the use process, and the deformation is eliminated.

According to the method for eliminating deformation of the automobile side apron sheet metal, the normal-temperature curing modified acrylic acid bi-component AB glue is smeared on the male die at the center position of the skirt edge of the inner die of the side wall outer plate or the cloth-based adhesive tape is pasted, so that the punched side wall outer plate forms an arch-shaped molded surface at the skirt edge position, the yield strength of the outer plate at the skirt edge position is improved, and the service life of the side wall outer plate is prolonged. Therefore, the side wall outer plate does not have thermal deformation after being heated by a coating process. The side body outer plate inner die coated with the AB glue can continuously punch 10000 side body outer plates without deformation and displacement, the side body outer plate inner die pasted with the cloth-based adhesive tape can continuously punch 1000 side body outer plates without deformation and displacement, the cost is extremely low, the punched side body outer plates form an arch-shaped molded surface of 0.6 mm at the skirt edge position, and the side body outer plate inner die can be used for continuously punching the side body outer plates without deformation and displacement. The yield strength of the outer plate at the skirt edge position is improved, and thermal deformation does not occur any more after the outer plate is heated through a coating process.

This invention relates to the field of building material testing technology, specifically a fully automatic flexural strength tester for detecting the compressive strength of concrete. The tester includes: a base, a support device, a flexural indenter device, a control system, a data display screen, and a core sample clamping device. The base supports the mechanical structure of the entire device and provides an installation reference for each component. The support device is symmetrically arranged on both sides of the upper surface of the base, supporting the core sample clamping device and providing vertical load-bearing capacity. The core sample clamping device is installed on the upper end of the support device to clamp and fix the concrete core sample specimen, ensuring the positional stability of the specimen during loading. The flexural indenter device is located above the pressure sensor and applies a concentrated load to the concrete core sample specimen to achieve the flexural strength test. This invention replaces the traditional hydraulic cylinder drive with a motor drive, eliminating influencing factors such as piston deformation, hydraulic cylinder leakage, and changes in oil quality.

The utility model discloses a positioning mechanism and a machining device. The positioning mechanism comprises a base, a pressing assembly and a clamping assembly. The base comprises a base plate and a bearing piece arranged on the base plate, and the bearing piece is matched with a product to be positioned; the pressing assembly is arranged on the base plate and comprises a pressing piece located above the bearing piece, and the pressing piece can move close to the bearing piece to press the product; the clamping assembly comprises two clamping driving pieces and two clamping adsorption pieces, the two clamping driving pieces are arranged on the base plate and located on the two opposite sides of the bearing piece correspondingly, and the two clamping adsorption pieces are connected with the corresponding clamping driving pieces correspondingly. The two clamping driving pieces are used for driving the corresponding clamping adsorption pieces to move close to the bearing piece so as to clamp and adsorb the product. According to the positioning mechanism, the product is positioned, the outer side face and the inner cavity of the product are machined, the situation that the product is deformed due to the fact that the inner cavity of the product is machined can be avoided by adsorbing the product, and the machining yield is increased.

A worktable for an integrated high-power laser cutting machine includes parallel rails on both sides and several crossbeams spanning across them, forming a working area between the rails on both sides. A vertically arranged partition plate is positioned above the crossbeams, dividing the working area into several working chambers. A heat-insulating protective plate is positioned on the outer side of the partition plate. The heat-insulating protective plate and the partition plate together form a heat-insulating cavity, which separates the crossbeams from the working chambers. The rails are equipped with an intelligent dust-removing and heat-dissipating duct. A heat dissipation vent is opened on one side of the intelligent dust-removing and heat-dissipating duct, connecting the duct and the working chambers. A cooling fan is connected to the intelligent dust-removing and heat-dissipating duct. This invention significantly improves the thermal stability and processing accuracy of the high-power laser cutting worktable by integrating a composite structure of a heat-insulating protective plate, partition plate, and refractory bricks, along with an active heat dissipation and dust removal system, thus enabling it to perform laser cutting operations with a high-power laser cutting machine.

The present invention discloses a compact microchannel LNG heat exchanger and a preparation method thereof. The heat exchanger includes a heat exchanger body, and a plurality of cold fluid channels and hot fluid channels are arranged alternately and at intervals in the vertical direction. The two ends of the cold fluid channel are respectively connected to the cold fluid inlet and the cold fluid outlet, and the two ends of the hot fluid channel are respectively connected to the hot fluid inlet and the hot fluid outlet. The cold fluid channel includes a first diverter channel, a cold side heat exchange channel and a first confluence channel. The hot fluid channel includes a second diverter channel, a heat measurement heat exchange channel and a second confluence channel. The present invention adopts a countercurrent arrangement, and a large temperature difference stress is not generated at both ends of the heat exchanger. Diverter and confluence channel sections are respectively arranged after the fluid inlet and before the fluid outlet. The fluid flows through the diverter channel, and the diverter channel makes the flow distribution more uniform, so that the medium temperature is evenly distributed. The preparation method adopts additive manufacturing technology for one-piece molding, and the material utilization rate is high, which ensures the stability and efficiency of the heat exchanger operation.