88results about How to "Address stress" patented technology

The invention discloses an ultrafast laser partition impact strengthening method and device for a thin-wall covered edge of a composite blade. According to the method, the surface of the thin-wall covered edge is strengthened by utilizing the characteristics of instantaneous high pressure of shock waves induced by ultrafast laser and accurate and controllable propagation depth, and meanwhile, according to the thickness characteristics of different areas of the covered edge, laser with different pulse widths is selected to carry out partitioned strengthening treatment, so that accurate regulation and control of a surface residual stress field are realized on the premise of inhibiting deformation; the problem of cooperative control of surface strengthening deformation and a stress field of the thin-wall edge covering structure is solved. According to the thickness characteristics of different areas of the edge covering structure, based on the principle that the shorter the laser pulse width is, the shallower the shock wave propagation depth is, the shallow the depth of a residual stress field influence layer is and the edge covering structure is not prone to deformation, a femtosecond / picosecond pulse width laser combined shock peening method is provided, and femtosecond laser shock is adopted in a thin-wall area; femtosecond laser or picosecond laser with relatively long pulse width is adopted for impact in a wall thickness area, and precise regulation and control of a surface stress field are achieved on the premise of restraining thin-wall wrapping edge deformation.

The invention relates to a method for alternately jacking beams by using jacks and T-shaped pads, and belongs to the technical field of bridge construction.The method includes the steps that two steel pipe piles are installed on the two sides of a cross-channel steel box beam, a distribution beam is arranged on each steel pipe pile, a steel thick cushion block is arranged on each distribution beam, and then the jacks are arranged on the steel thick cushion blocks; the steel pipe pile, the distribution beam, the thick steel cushion block and the jack are integrated, a diaphragm plate is installed in the steel box girder, meanwhile, a cable-stayed buckling tower is anchored on the diaphragm plate of the steel box girder, a spherical steel support is installed at the bottom of the steel box girder, a T-shaped cushion block is arranged between the jack and the spherical steel support, and the integrally lifted steel box girder is reinforced. The jacks and the T-shaped cushion blocks are used for alternately jacking beams in the junction reinforcing area of the web plate and the diaphragm plate in the steel box beam, so that the steel box beam is prevented from being damaged due to overlarge local stress, and the problem that the steel box beam is possibly damaged due to overlarge local stress caused by alternate change of force in the beam body is solved.

The invention relates to the field of thin film materials, and provides a patterned low-internal-stress high-reflection layer and a preparation method and application thereof, and the high-reflection layer comprises an n (Si / Ni) layer, a Cr layer, a cap layer and a patterned reflection layer which are sequentially located on a gamma-Al2O3 substrate from bottom to top; the n (Si / Ni) layer is formed by alternately depositing a Si layer and a Ni layer for n periods, and the alternating period n is 30-60; the average thickness of the Si layer is 15-40 nm, the average thickness of the Ni layer is 3-8 nm, and the ratio of the average thickness of the Si layer to the average thickness of the Ni layer is 5: 1; the lowest layer of the n (Si / Ni) layer is a Si layer and is connected with the gamma-Al2O3 substrate, and the uppermost layer is a Ni layer. The multilayer composite structure design is adopted, high reflectivity, low internal stress, low defect density and chemical stability are achieved, the problems that a traditional high-reflection layer is large in internal stress, large in defect density and the like are solved, and the method can be applied to the fields of photoetching masks, optical imaging and sensors.

The invention discloses a hybrid half-frequency modulation method, system and device for a dual-active bridge DC-DC converter and a medium. The method comprises the following steps: judging a working mode of a current working point of the dual-active bridge DC-DC converter according to the transmission power p, the input voltage Vin and the output voltage Vo of the dual-active bridge DC-DC converter; the modulation type is determined according to the working mode of the current working point of the dual-active bridge DC-DC converter, and the modulation type comprises three-phase shift (TPS) modulation, secondary side half-frequency modulation, primary side half-frequency modulation and double-side half-frequency modulation; according to the method, the system, the equipment and the medium, the problems of large inductive current stress and low efficiency of the DAB converter in a wide voltage range and a full power section can be effectively solved.

The invention discloses a vanadium positive electrode material with a high-stability crystal face structure and a preparation method thereof, and belongs to the technical field of zinc ion batteries, and the preparation method comprises the following steps: step S1, adding vanadium pentoxide powder into a beaker, then adding deionized water, stirring and mixing, then adding zinc sulfate and anthraquinone-2-sodium sulfonate, stirring and mixing, and then adding sodium hydroxide, stirring and mixing; finally adding hydrogen peroxide, stirring and mixing to obtain a modified solution; and S2, adding the modification solution into a reaction kettle, then adding the pretreated carbon cloth, immersing the pretreated carbon cloth into the modification solution, carrying out hydrothermal reaction, reducing the pressure, cooling to room temperature, washing with water for multiple times, and drying to obtain the vanadium positive electrode material with the high-stability crystal face structure, through pre-intercalation of zinc ions and synergistic anchoring of anthraquinone-2-sodium sulfonate, the ion migration rate of the positive electrode material is improved, meanwhile, a stable crystal space structure is formed, a wide-area and stable microscopic channel is provided in the ion intercalation-deintercalation process, and the zinc storage rate performance and the cycle stability are enhanced.

The invention relates to a phase shift mask substrate and a dynamic magnetron sputtering preparation method thereof, a MoSi-based gradient film layer is continuously and dynamically deposited on the substrate, and the method comprises the following steps: carrying out first-stage deposition on the substrate by adopting a molybdenum-silicon alloy target so as to form a transition layer; carrying out second-stage deposition on the transition layer to form a main body functional layer through deposition; and third-stage deposition is carried out on the main body functional layer to form a surface modification layer through deposition, and the MoSi-based gradient film layer is obtained. The invention provides a one-step sputtering deposition method capable of dynamically and accurately regulating and controlling, so that the inherent contradiction between the performance and the stress of a single-layer uniform film is fundamentally solved, and the complexity and the uncertainty of a traditional multi-step process are avoided.

This invention relates to the field of shock waveguide technology and discloses a spring electrode shock waveguide, comprising a slender carrier and a balloon. The space formed between the balloon and the carrier is an annular channel for fluid to enter and achieve inflation. First, the electrode in the guide tube is designed as a spring-type spiral structure and wound around the surface of the carrier, which can provide good electrical contact and make the electrode have excellent ductility, solving the problem of large stress on the electrode during the deformation of the balloon under fluid compression. Through the design of a first support mechanism and a second support mechanism, the first support mechanism is connected between two adjacent outer walls of the electrode, providing axial support force for the electrode, and the second support mechanism is connected between the inner wall of the balloon and the outer wall of the electrode, providing radial support force for the electrode. This reduces the pressure on the electrode when the internal pressure of the balloon increases and the balloon expands, further solving the stress problem of the electrode during the deformation of the balloon.

The overhead support allowing the rooting position to move comprises a rooting structure, a support structure, a concrete foundation and a heating pipeline, the lower portion of the rooting structure is connected with the support structure, the upper portion of the rooting structure is connected with the concrete foundation, and the heating pipeline is arranged in the support structure. The overhead support allowing the rooting position to move has the beneficial effects that the elliptical groove is formed in the bearing part of the rooting structure, so that a steel rod placed in the elliptical groove is allowed to move along the elliptical groove when being pulled; and by arranging the spring, the steel rod can be reset after the pulling force is reduced. The invention solves the problem that the overhead bracket is easy to damage due to overlarge stress at the root of the bracket caused by thermal expansion and cold contraction of a heat supply pipeline, and provides a novel design form of the rooting part of the overhead bracket, so that the stability of the overhead bracket and the pipeline can be ensured; and the impact of thermal expansion and cold contraction of the pipeline on the overhead bracket is reduced by allowing the rooting part of the overhead bracket to axially displace.

The invention relates to the technical field of heat treatment, and discloses a four-side quenching device for a rack rail and a quenching method.The four-side quenching device comprises a rack, a conveying mechanism and a quenching mechanism, the conveying mechanism comprises a conveying trolley and a driving mechanism for driving the conveying trolley to move, and a rack rail containing frame is fixed to the upper portion of the conveying trolley; the quenching mechanism comprises a heating assembly and a spraying assembly, the heating assembly comprises an electromagnetic inductor, the electromagnetic inductor is installed through an inductor installation frame so that the electromagnetic inductor and the rack can be kept relatively fixed, and in the moving direction of the conveying trolley, the electromagnetic inductor is provided with four edges for heating the four faces of the toothed rail at the same time. According to the four-side quenching device disclosed by the invention, a two-side quenching inductor is changed into a four-side simultaneous quenching inductor, so that the quenching efficiency is obviously improved, meanwhile, the stress problem caused by heating for several times is also solved, and the production efficiency of the toothed rail is improved.

The utility model provides a high-power surface-mounted transient voltage protector. The high-power surface-mounted transient voltage protector comprises a packaging main body, a chip body and a first electrode, the first electrode comprises a platform part and a lead part; the lead part is in a dovetail-like shape and comprises a convergent end and an open end; the convergence end of the lead part is connected with one end of the platform part; the chip body is arranged on the platform part; the packaging main body wraps the chip body and the platform part, and the open end of the lead part penetrates through the packaging main body to serve as a first external pin. The size of the chip body is improved to be rectangular, so that the effective area of the chip is increased to the maximum extent under the condition that the packaging size limitation is met, and the power performance of a product is improved; and meanwhile, the dovetail-like structure is adopted as the lead part, so that the stability between the lead part and the platform part is improved, the packaging stress is reduced, and the problems of product yield loss and poor reliability caused by the packaging stress are solved.

The utility model relates to a connecting component for connecting different square tubes, which comprises a lantern ring piece sleeved on a thin square tube, and the lantern ring piece is connected with the front end or the rear end of a thick square tube; during use, the thick square tube and the thin square tube are connected and fixed together through the lantern ring piece. The lantern ring piece is provided with a plurality of first connecting holes used for being connected with the thick square pipes, the thick square pipes are provided with second connecting holes corresponding to the first connecting holes, and the first connecting holes are connected with the second connecting holes through connecting pieces. At least one first connecting hole is located in the top of the lantern ring piece, and at least one first connecting hole is located in the bottom of the lantern ring piece. The first connecting holes and the second connecting holes are pin holes, the connecting pieces are pins corresponding to the pin holes, and therefore the thick square pipe and the thin square pipe are hinged. The connecting mode provided by the product is efficient and reliable, installation is convenient, the existing problem that square tubes made of metal and other materials must be connected through welding is solved, and meanwhile the problem that stress is generated due to temperature change between the cross beam and the stand column which are matched with the square tubes is solved.

The present invention discloses a growth method for reducing stress of silicon carbide crystals. A crucible liner ring is made of hard graphite and porous graphite and is placed between a seed crystal and a graphite crucible. The thickness, shape and combination form of the hard graphite and the porous graphite are adjusted by computational simulation so that during the crystal growth process, the silicon atmosphere is effectively discharged at the initial growth stage to reduce the negative impact on the nucleation of silicon carbide. While maintaining the crystal shape of equal diameter or expanded diameter growth, the pores of the porous graphite can be compressed to release thermal stress, reduce the occurrence of cracks and cracks in the crystal ingot, reduce the density of microtubes, grain boundaries and dislocation defects, and obtain a high-quality crystal ingot.

The invention provides a method for forming an image sensor, which comprises the following steps of: forming a light blocking structure comprising a plurality of layers and sections of short-line groove through holes around a pixel array of the image sensor so as to reduce the influence of stress. The light blocking effect is achieved without adopting a whole row of silicon through hole structures, meanwhile, due to the design of multiple small sections, huge stress cannot be introduced, and the problems of light emitting and overlarge stress can be solved at the same time. According to the scheme, structural design does not need to be repeatedly carried out for different products to find a scheme with small stress.

This utility model relates to the field of bridge construction technology and discloses a support device for the steel-concrete composite section of a cable-stayed bridge tower. The device includes: several embedded parts, with anchor rods anchored into the bridge deck at the lower end and horizontal support plates at the upper end; two or more vertical supports, including several columns, beams, and diagonal braces. The columns are vertically arranged, with their lower ends connected to the support plates and their upper ends equipped with horizontal mounting plates. The top and bottom ends of adjacent columns are connected to the beams, and several diagonal braces are arranged between adjacent columns; a transverse connecting rod, with both ends connected to two adjacent vertical supports; and a leveling bracket, with its upper end fixedly connected to the lower surface of the steel-concrete composite section and its lower end being a horizontal connecting plate opposite to the mounting plate. This support device for the steel-concrete composite section of a cable-stayed bridge tower can ensure the stability of the steel-concrete composite section during construction, guaranteeing construction accuracy.

The invention relates to the technical field of unmanned aerial vehicles, and discloses a four-axis eight-rotor heavy-load unmanned aerial vehicle which comprises an unmanned aerial vehicle body, the unmanned aerial vehicle body comprises a carbon fiber upper clamping plate, a carbon fiber middle clamping plate, an aluminum alloy bottom plate, four carbon tube walls and two foot stools, and battery mounting openings are reserved in the carbon fiber upper clamping plate and the carbon fiber middle clamping plate; the four carbon tube walls are connected between the carbon fiber upper clamping plate and the carbon fiber middle clamping plate through aluminum alloy tube clamps, each aluminum alloy tube clamp comprises a tube arm clamping plate, and the tube arm clamping plates are fixedly connected with the carbon tube walls through bolts. The four-axis eight-rotor coaxial layout is adopted, compared with a traditional heavy-load unmanned aerial vehicle needing six or eight independent vehicle arms, the wheelbase of the unmanned aerial vehicle is remarkably shortened, the overall structure is more compact, and the size of the unmanned aerial vehicle is greatly reduced on the premise that powerful power of the eight rotors is guaranteed through the design; and the device is more convenient to transport and deploy in a complex and narrow working environment.

The invention discloses a combined installation method for embedded parts of a water turbine, and relates to the technical field of hydroelectric power stations. The water turbine embedded part combined installation method comprises the following steps that S1, a pressure steel pipe is installed; s2, mounting and fixing the seat ring; s3, a volute is correspondingly installed between the seat ring and the pressure steel pipe; s4, the adjusters are installed, the pressure steel pipe and the adjusters are subjected to full welding, the adjusters and the volute are welded, and welding circular seams are reserved; s5, fixing of the seat ring is relieved, and welding closing is conducted on a welding circular seam at the connecting position of the adjuster and the volute; s6, after the installation elevation and the horizontal deviation of the seat ring are determined and fine adjustment is carried out, the ring seat is fixedly installed; and S7, outer cladding reinforced concrete is poured. According to the combined mounting method for the embedded parts of the water turbine, the problem that the residual stress of the folding seam is large and cannot be effectively released during mounting of the adjuster can be effectively solved, the connecting quality after mounting of the adjuster is guaranteed, and potential safety hazards caused by mounting of the adjuster in the operation process of a power station are eliminated.

The invention relates to the field of aircraft large component assembly, and discloses a large component flexible unloading method and system based on force value feedback control, and the flexible unloading method specifically comprises the steps: installing a three-dimensional force sensor on a numerical control positioner, calibrating the direction of the sensor, and setting a force value threshold value; after a lifting rope is installed at the lifting point position of the large component, the lifting rope is lifted, and the lifting rope is stressed; determining a descending sequence of Z axes of the positioners according to the mathematical model of the large component; the Z axis of the positioner is sequentially descended according to the sequence, in the descending process, the force borne by the positioner is monitored, when the force values in the X direction and the Y direction exceed threshold values, the Z axis stops descending, the X axis and the Y axis of the numerical control positioner are moved through a force feedback control algorithm, and after the numerical value of the force sensor reaches a target value, the Z axis of the positioner continues to be descended; and the ball head of the large component is separated from the ball socket of the positioner. The problems of stress pulling, extrusion and the like generated in the unloading process of the large component are solved, and the risk that the large component and the positioner are damaged is avoided.

The utility model relates to the field of building decoration, in particular to a connecting component for connecting angle steel and a steel square tube, which comprises a connecting piece, the connecting piece is detachably connected with the top surface and the left side surface of the angle steel, and the front end or the rear end of the connecting piece is connected with the front side surface or the rear side surface of the steel square tube; during use, the steel square tube and the angle steel are connected together through the connecting piece. The product is simple in structure and convenient to operate, assemble, disassemble and maintain, the special connecting pieces made of aluminum alloy and the steel pins are adopted for achieving hinged connection of the angle steel and the steel square pipe, the connecting mode provided by the product is efficient and reliable, and installation is convenient; the product solves the problem that the angle steel and the steel square tube must be connected by welding, and also solves the problem that stress is generated between the cross beam and the stand column due to temperature change. The product is simple and convenient to operate, safe and reliable, replaces the existing welding connection mode with heavy problems, and improves the work efficiency and the construction quality.

This invention provides a diamond thin-film battery and a method for preparing a diamond thin film. The method involves providing a single-crystal diamond substrate, which includes a first region, a second region, and a third region. The single-crystal diamond substrate is divided into an intrinsic layer and a highly doped P-type epitaxial layer, with the boundary between the intrinsic layer and the highly doped P-type epitaxial layer located within the first region. Carbon ion implantation is performed on the second region to form an amorphous carbon layer. After forming the amorphous carbon layer, it is annealed under vacuum conditions to modify the amorphous carbon layer into a graphite layer. After forming the graphite layer, a first diamond layer is deposited on the surface of the third region. A second diamond layer is deposited on the surface of the first diamond layer. After forming the second diamond layer, the graphite layer is electrochemically etched until it is removed, thereby peeling off the single-crystal diamond substrate of the first region to form a diamond thin film, resulting in a large-size and ultrathin diamond thin film.

The application discloses a kind of biocompatible materials and preparation method for bionic porous intervertebral fusion cage, belong to intervertebral fusion cage material technical field.A kind of biocompatible materials for bionic porous intervertebral fusion cage, by weight parts includes the following components: polyether ether ketone 65-80 parts, modified functional filler 15-25 parts, hydroxyapatite 8-12 parts, flow modifier 0.5-1 part;The modified functional filler is graphene oxide coated modified barium titanate functional filler.By introducing surface conductive modified nano piezoelectric ceramic particles, realize the effective conversion and transmission of mechanical stimulation to bioelectric signal, this microstructure design makes the insulating polyether ether ketone matrix possess the electric activity of simulating natural bone stress-electric signal response mechanism, so as to be favorable to activate osteoblast activity and promote bone integration of implant interface.

The present invention relates to the field of thin film materials, and provides a patterned low internal stress high reflective layer and a preparation method and application thereof, wherein the high reflective layer comprises γ-Al 2 O 3 n(Si / Ni) layer, Cr layer, cap layer, and patterned reflective layer on the substrate; the n(Si / Ni) layer is composed of n cycles of Si layer and Ni layer alternately deposited, and the alternating cycle n is 30-60; the average thickness of the Si layer is 15-40nm, the average thickness of the Ni layer is 3-8nm, and the average thickness ratio of the Si layer to the Ni layer is 5:1; the bottom layer of the n(Si / Ni) layer is a Si layer and is adjacent to the γ-Al 2 O 3 The substrate is connected, and the top layer is a Ni layer. The present invention adopts a multi-layer composite structure design to achieve high reflectivity, low internal stress, low defect density and chemical stability, solving the problems of high internal stress and high defect density in traditional high reflective layers, and can be applied to photolithography masks, optical imaging and sensor fields.

The invention provides an anode rotor thermal radiation coating and a preparation method and application thereof, and belongs to the technical field of metal surface treatment.The anode rotor thermal radiation coating comprises a bonding layer, a stress slow release layer and a thermal radiation layer which are sequentially stacked on the surface of an anode rotor base body; the bonding layer comprises a Ni layer, the stress slow release layer comprises a metal-carbon composite layer, metal elements in the metal-carbon composite layer comprise Cr and / or Ti, and the heat radiation layer comprises a graphite-like carbon material layer. According to the anode rotor coating, the problem of internal stress of the coating is effectively solved, the heat conduction and vacuum heat dissipation performance of the coating is improved, under the working condition of high-temperature thermal cycle of an anode rotor, the coating does not release gas and does not contain volatile substances, the coating keeps good compactness and bonding strength, and therefore the stability of the anode rotor under the thermal shock working condition is effectively improved, and the service life of the anode rotor under the thermal shock working condition is effectively prolonged.

The invention belongs to the technical field of high-power laser films, and relates to a high-threshold high-stability laser film for realizing base-film integration based on continuous gradual change of refractive index, the film structure is S / L1L2L3 / A, S represents a substrate, L1 represents a transition layer between the substrate and L2, L2 represents a function realization layer with continuous gradual change of refractive index, L3 represents an impedance adaptation layer between L2 and an incident medium, and A represents an impedance adaptation layer between L2 and an incident medium. A represents an incident medium. According to the base-film integrated intense laser thin film based on continuous gradual change of the refractive index, planarization treatment is carried out on defects of the base, a double-region co-sputtering preparation method is adopted for the L1 layer and the L2 layer, continuous gradual change of the refractive index from the base to an incident medium is achieved, and different optical function requirements are met. According to the integrated film, the problem of stress mismatching caused by thermal expansion coefficient difference between the substrate and the film layer and between different layers in the film layer is effectively solved, a sudden change interface between materials is eliminated, the jump characteristic of a discrete interface of a traditional film is avoided, and the laser damage threshold and stability of the film are improved.

The embodiment of the application provides a kind of based on sensor's winding tube heat exchanger performance test method and system, it is related to winding tube heat exchanger performance test technical field, method includes by sensor obtains the surface temperature distribution data of winding tube heat exchanger outer wall to determine heat exchange condition, based on external heat exchange condition, preset winding tube heat exchanger's structure parameter and the thermal physical property of winding tube material, obtain the heat transfer state in each local area in winding tube heat exchanger interior and calculate the local heat transfer coefficient of each local area in winding tube heat exchanger interior;According to the local heat transfer coefficient of each local area and the preset reference coefficient value, obtain the distribution state of winding tube heat exchanger interior scale formation and calculate the thermal stress of winding tube heat exchanger interior structure to judge the potential damage risk of winding tube heat exchanger interior structure.The application can improve the safety, reliability and energy efficiency evaluation accuracy of winding tube heat exchanger operation.

The invention relates to a loss calculation method and system for an energy consumption valve of a direct-current energy consumption device, and belongs to the technical field of direct-current energy consumption devices. According to the method, the working state of an energy consumption valve of the direct-current energy consumption device is divided into a hot standby state and an energy consumption state; the energy consumption state comprises a switching-in and switching-out stage, a switching-in stage and a switching-out stage, and the average loss rate of the energy consumption valve of the direct-current energy consumption device is finally obtained through calculation of loss or loss rates in different states; the method is used for solving the problem that thermal stress design of core components of the energy-consuming valve and valve hall heating and ventilation design are affected due to lack of evaluation on the loss rate of the energy-consuming valve.

The invention relates to the technical field of optical thin films, in particular to a 190-230nm-wavelength metal dielectric enhanced reflecting film and a preparation method thereof.The metal dielectric enhanced reflecting film comprises a substrate, a main reflecting layer and a plurality of dielectric enhanced layers, the main reflecting layer is an Al layer, the dielectric enhanced layers are formed by alternately stacking MgF2 layers and Al2O3 layers, the number of the dielectric enhanced layers is not larger than 3, and the thickness of the dielectric enhanced layers is not larger than 3. The physical thickness of the Al layer is 180 + / -2% nm, the physical thickness of the MgF2 layer is 26.43 + / -2% nm, and the physical thickness of the Al2O3 layer is 36.65 + / -2% nm; in the MgF2 layer, the evaporation rate of MgF2 is 0.8 + / -0.1 nm / s, and in the Al2O3 layer, the evaporation rate of Al2O3 is 0.5 + / -0.05 nm / s. The metal medium enhanced reflecting film has stable high reflectivity in the wave band of 190-230nm, the compactness and firmness between the film layers are high, and the durability is good.

The embodiment of the invention provides a deep peak regulation anti-fatigue control method and system for a solid waste-based phase change heat storage material. The modular heat storage alternating system is constructed, the temperature state of the solid waste-based phase change heat storage material in each heat storage unit is monitored in real time, the real-time fatigue accumulated damage value of the heat storage material is calculated based on the temperature state, and then the fatigue of the heat storage material is calculated according to the damage value and the preset fatigue limit threshold value. And a heat charging and discharging scheduling strategy including load reduction, rotation or quit operation is intelligently executed. Through the synergistic effect of three levels of system architecture, state perception and intelligent decision, the problems of thermal stress accumulation and fatigue damage of the solid waste-based phase change heat storage material under the working conditions of deep peak regulation and frequent start and stop are effectively solved, the operation stability and reliability of the heat storage system are remarkably improved, and the overall service life of the heat storage system is remarkably prolonged; and meanwhile, active management and predictive maintenance of the health state of the material are realized.

The invention provides a supporting device and a supporting method of a fiber bragg grating transceiver for stress-strain detection, and relates to the technical field of boiler heating surface measurement. The supporting device comprises a plurality of supporting assemblies which are arranged on the heating surface of the boiler water cooling pipe and used for supporting the fiber grating sensor; the protection assemblies are in one-to-one correspondence with the supporting assemblies, are arranged on the heating surface of the boiler water cooling pipe, are positioned above the corresponding supporting assemblies, and are used for limiting the radial movement range of the fiber grating sensor; the emission supporting piece is arranged outside the boiler and used for supporting the light source emitter and tensioning or loosening the fiber bragg grating sensor; and the receiving support frame is arranged outside the boiler and is used for supporting the receiving terminal. According to the supporting device and the supporting method of the fiber bragg grating transceiver for stress-strain detection, the problem that the stress and the strain of a plurality of monitoring points in the heating surface of a boiler cannot be monitored by using a fiber bragg grating sensor in the prior art is solved, and the measuring efficiency of the strain and the stress of the heating surface of a boiler water cooling pipe is improved.

The invention discloses a high-temperature-resistant self-adjusting plate heat exchanger. An upper partition plate (2), a middle partition plate A (3), a middle partition plate B (4) and a lower partition plate (5) are sequentially arranged between the two end plates (1) from top to bottom; a heat dissipation core body (6) is arranged between the upper partition plate (2) and the middle partition plate A (3), and a heat dissipation core body (6) is also arranged between the middle partition plate B (4) and the lower partition plate (5); each heat dissipation core body (6) is hooped by more than one hooping assembly (7) arranged along the length direction; the upper U-shaped rib (7.1) is arranged on the upper surface of the upper partition plate (2), the transition beam (7.2) is arranged between the middle partition plate A and the middle partition plate B, the lower U-shaped rib (7.3) is arranged on the lower surface of the lower partition plate (5), and the pull rod (7.4) is used for tensioning the upper U-shaped rib (7.1), the transition beam (7.2) and the lower U-shaped rib (7.3). Deformation compensation of all components under the high-temperature condition can be achieved, on one hand, the product rigidity is improved, and on the other hand, the strength requirement is met.

The application relates to the technical field of optical films, in particular to a wavelength 190-230 nm metal dielectric enhanced reflection film and a preparation method thereof. The metal dielectric enhanced reflection film comprises a substrate, a main reflection layer and a plurality of dielectric enhancement layers. The main reflection layer is an Al layer. The dielectric enhancement layers are alternately stacked by MgF2 layers and Al2O3 layers. The number of dielectric enhancement layers is not more than 3. The physical thickness of the Al layer is 180+ / -2% nm. The physical thickness of the MgF2 layer is 26.43+ / -2% nm. The physical thickness of the Al2O3 layer is 36.65+ / -2% nm. In the MgF2 layer, the evaporation rate of MgF2 is 0.8+ / -0.1 nm / s. In the Al2O3 layer, the evaporation rate of Al2O3 is 0.5+ / -0.05 nm / s. The metal dielectric enhanced reflection film has stable high reflectivity in the 190-230 nm wavelength band, high compactness and firmness between the film layers, and good durability.