34results about How to "Reliable workmanship" patented technology

The invention relates to a rigid spiro compound and a preparation method and application thereof.The preparation method comprises the steps that 6-methylene-androstane-4-ene-3, 17-diketone (V) is dissolved in a mixed solution of dichloromethane and trifluoroacetic acid, reaction and reduced pressure distillation are conducted at the temperature of 20-25 DEG C, then extraction washing and distillation are conducted, a rigid spiro compound crude product can be obtained, and the rigid spiro compound is obtained. The crude product can be subjected to column chromatography separation and purification to obtain a refined rigid spiro compound (I). By adopting the preparation method, the friction and wear properties of the base oil are remarkably improved, and the base oil has lower friction coefficient and wear scar diameter, and has good application prospect as an antifriction and wear-resistant additive.

The invention provides a preparation method of dotenorad. The preparation method comprises the following steps: (1) carrying out cyclization reaction on SM1 and paraformaldehyde under the action of an activating agent and a solubilizer to obtain Int1; (2) carrying out substitution reaction on the Int1 and SM2 to obtain Int2; (3) carrying out oxidation reaction on the Int2 and an oxidizing agent in the presence of a catalyst to obtain Int3; and 4, carrying out a demethylation reaction on the Int3 and lithium chloride to obtain dotenorad. The purity and the yield of the dotenorad prepared by the method are greatly improved, the cost is reduced, and the method is suitable for industrial mass production.

The invention provides a multi-section arc coupled high-power deep-sea giant magnetostrictive ultrasonic transducer and a design method thereof. The multi-section arc coupled high-power deep-sea giant magnetostrictive ultrasonic transducer comprises a multi-arc radiation shell, the two ends of the multi-arc radiation shell in the length direction are arc shells, and the side faces of the two ends of the multi-arc radiation shell in the width direction are multi-section arc shells. The multi-arc radiation shell is symmetrically arranged along the middle axis in the length direction and the middle axis in the width direction; the middle of the multi-section arc shell is a protruding arc-shaped part protruding outwards, and the two sides of the middle arc-shaped part are inwards-concave arc-shaped parts which are tangent to the middle arc-shaped part and concave inwards. An upper cover plate covers the upper portion of the multi-arc type radiation shell, a lower cover plate covers the lower portion of the multi-arc type radiation shell, and a driving module is installed in the multi-arc type radiation shell. According to the invention, by adopting the multi-arc shell, more effective modes can be created, so that the working bandwidth of the transducer is increased; in addition, the arc of the concave-convex structure can reduce the sensitivity of the surface stress of the transducer along with the change of water depth, so that the transducer can work in a deeper sea area.

The invention discloses a preparation method of a double-layer protective coating with a self-repairing characteristic, and aims to solve the problems that the bonding strength of a high-entropy alloy coating and a matrix is relatively low, and the long-term service stability is difficult to maintain. The preparation method comprises the following steps: 1, substrate pretreatment; secondly, the average atomic radius difference, the VEC, the mixed entropy and the mixed enthalpy of the high-entropy alloy multi-element system are calculated, and corresponding elementary substance powder is mixed and subjected to ball milling treatment; 3, performing cladding deposition on the mixed metal powder by adopting a high-energy beam deposition process; fourthly, the high-entropy alloy coating is ground, polished and cleaned; and fifthly, an oxidation process or a nitriding process is adopted for forming an oxidation layer or a nitriding layer on the high-entropy alloy coating in situ. The double-layer protective coating with the self-repairing characteristic provided by the invention has double-layer protection of the high-entropy alloy coating with excellent corrosion resistance and the in-situ oxidation / nitridation layer, and the high-entropy alloy coating forms a stable intermetallic compound by utilizing dilution of a matrix in design, so that the matching property of the coating and the matrix is improved.

The invention belongs to the technical field of wastewater treatment and utilization, and relates to a double-tower coupled coal chemical industry wastewater deacidification and deamination process, to-be-treated wastewater is divided into a cold part and a hot part to enter a deacidification tower from the upper part and the middle upper part of the deacidification tower respectively, deacidification tower kettle liquid without most acidic gas is pumped to the upper part of a deamination tower, and the deamination tower kettle liquid is pumped to the lower part of the deamination tower; after ammonia-containing water vapor is stripped from the top of the deamination tower, one part of the ammonia-containing water vapor enters the multi-stage segregation device, and the other part of the ammonia-containing water vapor enters the tower kettle of the deacidification tower to be used as a heat source of the deacidification tower; the segregation device is also connected with an ammonia water vapor compressor, and part of ammonia-containing water vapor is boosted to be slightly higher than the pressure of the tower kettle of the deacidification tower and then enters the deacidification tower. According to the process disclosed by the invention, deacidification and deamination are carried out in two towers, meanwhile, the deacidification tower is not provided with a reboiler, and a part of ammonia water vapor separated from the deamination tower is selected to enter the deacidification tower, so that a heat source is provided on one hand, and the reaction is more thorough through the disturbance action of gas on the other hand; and heat loss caused by the fact that waste gas directly flows out from the top of the deacidification tower is reduced or prevented.

The invention relates to a method for solving bending of a small square billet, and belongs to the technical field of alloy steel smelting and continuous casting methods. According to the technical scheme, casting blanks are densely arranged on a stepping steel turnover cooling bed, and steel turnover operation is continuously conducted; after the casting blanks are discharged from the cooling bed, the adze blanks are hoisted from a collecting rack of the cooling bed and stored in a blank stack area, and slow cooling is conducted in a close-packed stacking mode. The method has the beneficial effects that the equipment investment and maintenance cost are saved, the production cost is reduced, the air-cooling bending degree of the casting blank is effectively controlled, the requirements of the steel rolling heating furnace are met, the casting blank can smoothly enter the steel rolling heating furnace, the process is simple and reliable, and the problem that the casting blank cannot enter the steel rolling heating furnace after being offline in the production process is solved. And the quality defect that the bending degree of the casting blank exceeds the standard easily occurs in the stacking and cooling process, and the quality loss is reduced.

The invention discloses a method for low-temperature rapid catalytic degradation of silicone rubber, and belongs to the technical field of resource utilization of waste silicone rubber. According to the method, trifluoromethanesulfonic acid (HOTf) and metal halide zinc chloride are adopted to construct a concerted catalysis system, so that breakage and cyclization of a siloxane main chain can be realized within 10-20 minutes at the low temperature of 25 DEG C, and a siloxane product with octamethylcyclotetrasiloxane (D4) and cyclopentasiloxane (D5) as main components is generated. Compared with an existing Lewis acid system, the synergistic system still shows remarkably improved degradation rate and higher cyclization selectivity under a low-temperature condition. The method provided by the invention is suitable for linear, cross-linked and filler-containing waste silicone rubber, the process is mild and safe, the operation is convenient, and the obtained siloxane product can be directly used for regeneration and cyclic utilization of an organic silicon material.

The utility model discloses a drying device for drying lump ore through low-temperature flue gas, relates to the technical field of equipment before iron making, and aims to solve the problems that the moisture content of the lump ore is high and the waste heat utilization scheme of the low-temperature flue gas is single at the same time. A lump ore chamber is of a cavity structure with the upper cross sectional area larger than the lower cross sectional area, a smoke chamber is an annular cavity and is fixed to the periphery of the lump ore chamber in a surrounding mode, the annular inner periphery is in surface contact with the periphery of the lump ore chamber, and a heat-resisting lining plate is fixedly arranged on the inner wall of the lump ore chamber and used for preventing adhesion and resisting abrasion. The upper end of the lump ore chamber is provided with an ore inlet and a dust steam outlet, and the lower end is provided with an ore outlet; the upper part of the smoke chamber is connected with a plurality of air outlet elbows, the lower part of the smoke chamber is connected with a plurality of air inlet elbows, and a plurality of guide plates are fixedly arranged in the air outlet elbows, the air inlet elbows and the smoke chamber respectively; a heat preservation shell is arranged on the periphery of the flue gas chamber; the lump ore drying device can directly utilize waste heat of low-temperature flue gas to dry lump ore, reduces water content of the lump ore entering the furnace, and is beneficial to controlling smelting cost, reducing smelting energy consumption and maintaining production stability of the blast furnace.

The present invention belongs to the technical field of synchrotron radiation soft X-ray lenses, specifically a synchrotron radiation high-resolution soft X-ray lens and a preparation method thereof. The synchrotron radiation high-resolution soft X-ray lens of the present invention has the following structures from bottom to top: a silicon substrate, a silicon nitride diaphragm, and an X-ray lens composed of a template material and a non-metallic dielectric material; the X-ray lens is prepared by electron beam lithography and ALD process, including: spin coating photoresist on the silicon nitride diaphragm, exposing and developing the photoresist using electron beam lithography technology to form a template structure, growing non-metallic dielectric materials using ALD process, and finally preparing a beam blocker using overlay and thermal evaporation process to obtain the lens. The method of the present invention has a stable and reliable process, a shortened preparation cycle, and is compatible with existing lithography processes; the prepared soft X-ray lens has high focusing efficiency and high resolution, and is suitable for high-contrast three-dimensional imaging of X-rays of biological cells, organic materials, and dielectric materials.

The utility model relates to a blocking piece and an arrangement structure of the blocking piece on at least one component of a motor vehicle, the blocking piece is used for sealing an opening in the at least one component of the motor vehicle, the blocking piece is made of elastic plastic and is provided with a tubular base body, the base body is provided with an axial opening (14), one end of the base body is provided with a bottom, and the bottom is provided with an opening (14). A flange is arranged at the other end of the base body, by means of which the plug can be supported on the edge region of the opening of a component having the opening. In order to provide a blocking piece which can be reliably assembled by a special process, the assembling and sealing performance of the blocking piece conforming to the specification is particularly favorably proved, and therefore the blocking piece can be rechecked, according to the utility model, a clamping element extending in the central opening penetrates through the blocking piece, and the clamping element is supported at the outer sides of the bottom and the flange by a corresponding supporting part; an axial clamping force can be applied to the blocking part by means of the clamping element.

The invention belongs to the technical field of coke oven gas purification, and particularly relates to an environment-friendly and efficient oxidation process desulfurization regeneration tail gas treatment system and a method thereof.The system is characterized in that the system is a multi-stage step-by-step washing system and comprises an alkaline washing tower, an acid washing tower and a water washing tower, and a regeneration tail gas inlet pipe is connected to the bottom of the alkaline washing tower; primary washing tail gas at the top of the alkaline washing tower is connected with the bottom of the pickling tower through a pipeline, secondary washing tail gas at the top of the pickling tower is connected with the bottom of the water washing tower through a pipeline, a bleeder is arranged at the top of the water washing tower, the bottom of the bleeder is isolated from the interior of the water washing tower through a partition plate, and an overpressure return pipe is arranged between an outlet of the tail gas fan and the bleeder and provided with a switch valve. And a pressure gauge is arranged on an outlet pipeline of the tail gas fan and is in interlocking control with the switching valve. The method has the beneficial effects that the existing environmental protection standard can be met, ammonia in the tail gas can be recycled, no sewage is discharged, and the method has the characteristics of environmental protection, high efficiency, stable and reliable process and easiness in implementation and popularization.

The invention relates to a precious metal three-way catalyst as well as a preparation method and application thereof. The precious metal three-way catalyst comprises an alumina carrier, a cerium-zirconium solid solution and an active component M1, metal M2 is also loaded on the alumina carrier; the cerium-zirconium solid solution covers the surface of the alumina carrier, and the active component M1 is dispersed on the surface of the cerium-zirconium solid solution; the active component M1 comprises any one or a combination of at least two of Rh, Ir or Ru; the metal M2 comprises a combination of at least two of Pd, Pt, Rh or Au; the active component M1 and the metal M2 comprise at least three different elements. The noble metal three-way catalyst provided by the invention is used for degrading CO, NOx and CH3OH in an equivalent combustion mode, and is good in low-temperature activity, good in hydrothermal stability, relatively small in performance difference after hydrothermal aging, and wide in application prospect.

The invention discloses an ion implantation method for an alloy steel oil separation cover of an aviation hydraulic pump. The ion implantation method is characterized by comprising the steps of blank cleaning, blow-drying, charging, vacuumizing, cleaning parameter setting, injection parameter setting, a cleaning stage, an injection stage, program operation ending, discharging and the like. The modified layer is obtained through the ion implantation process on the friction surface of the aviation hydraulic pump oil separation cover, the hardness of the oil separation cover is greatly improved, the wear resistance of the product is relatively improved, and the service life is prolonged; the technological process is stable and reliable, and it is guaranteed that the product flatness and other precision are not affected; the macroscopic morphology of the injection layer is golden yellow, the color is uniform, no piebald exists, the hardness improvement proportion is higher than 10%, and the coating thickness is excellent.

The present application provides a flexible wearable hydrogen sulfide detection device assisted by machine learning. It includes a flexible substrate, an indium oxide / polyaniline composite material, a conductive terminal, and a power supply and current test unit connected thereto through an electrical path. The present application utilizes the gas-induced resistance effect of the indium oxide / polyaniline composite material to produce a resistance value change that matches the concentration of hydrogen sulfide gas, and calculates the concentration of hydrogen sulfide gas according to the change in resistance through the current detection unit, thereby realizing the identification of the concentration of hydrogen sulfide. The flexible substrate of the present application can be bent arbitrarily, and the influence of its bending curvature on the resistance can be normalized by the machine learning algorithm set in the central computing unit, thereby obtaining the hydrogen sulfide concentration that matches the current bending deformation state of the flexible substrate. The hydrogen sulfide detection device of the present application has advantages of low price, simple process, reliability, high flexibility, lightness, air permeability, etc., and is more convenient for the wide application of sensors for the Internet of Things.

The invention provides a preparation and analysis method of a hot-dip Zn-Al-Mg alloy coating, and belongs to the technical field of metal surface coating. The preparation method comprises the steps of steel strip pretreatment, hot dipping and post-plating treatment, and an alloy plating layer with a uniform structure is obtained by controlling parameters of all working procedures; the invention also provides a matched coating analysis method which comprises the following steps: performing phase analysis by adopting an X-ray diffractometer, and performing quantitative characterization on the microscopic structure of the coating by adopting a scanning electron microscope in combination with image analysis software. The corrosion resistance of the coating is remarkably improved by increasing the content of Al and cooperatively adding Mg and Si, the microstructure characteristics of the coating are revealed through analysis, a theoretical basis is provided for component optimization and process control, and industrial application prospects are achieved.

The embodiment of the invention relates to a cleaning device for chemical mechanical polishing. The invention provides a cleaning device for chemical mechanical polishing, comprising: a base in which a chamber for accommodating cleaning fluid is formed; the first end of the piston assembly is arranged in the cavity, so that the piston assembly can move under the action of the cleaning fluid; the cleaning brush is arranged at the second end of the piston assembly; the piston assembly comprises a liquid channel penetrating through the piston assembly, so that the cleaning liquid can reach the second end of the piston assembly through the liquid channel, and the cleaning liquid and the cleaning brush together clean a cleaning object. According to the invention, the diamond disc for chemical mechanical polishing can be properly cleaned, so that the adjusting efficiency of the polishing pad is improved, the service life of the polishing pad is prolonged, and the stability of a chemical mechanical polishing process is improved.

This utility model discloses an expansion tank bracket for commercial vehicles, including a circular tube beam as the main support beam; multiple sheet metal brackets are fixed to the circular tube beam by welding; the sheet metal brackets together constitute the expansion tank fixing structure and are bolted to the cab mount. The invention employs a circular tube-sheet metal structure and welding to form an expansion tank bracket, which is then bolted to the cab mount. The advantages of this invention are its simple structure, reliability, high strength, and ability to effectively prevent bracket cracking caused by expansion tank vibration.

The invention relates to the technical field of artificial joint prostheses, in particular to a polyethylene composite molded artificial joint friction liner and a preparation method thereof, and the method comprises the following steps: firstly, respectively manufacturing a high-crosslinking blank and a non-crosslinking blank, and enabling the high-crosslinking blank and the non-crosslinking blank to have matched contact interfaces; then putting the two parts into a mold consisting of an inner mold and an outer mold according to a position relationship, and ensuring that all contact surfaces are matched and butted; then carrying out mold pressing treatment, firstly applying initial pressure at low temperature, then heating to 150-250 DEG C and boosting to 10-20 MPa for hot-pressing compounding, so that a non-crosslinking part is molten and is integrated with a high-crosslinking part at an interface; and finally, cooling, demolding and machining to obtain a finished product. The friction surface of the prepared friction liner is made of a high-crosslinking material, the friction liner is endowed with excellent wear resistance, the base body of the friction liner is made of a non-crosslinking material, excellent mechanical strength and toughness are provided, and the technical problem that wear resistance and impact resistance of an artificial joint are difficult to consider at the same time is perfectly solved.

A metal foil strip winding type vacuum coating continuous production line includes a coating chamber, which is divided into two sections, front and rear sections, and windows are opened on one side of each chamber of the front and rear sections, and a track perpendicular to the frame is provided on one side of the frame corresponding to each window; a planar rectangular cathode arc source device is arranged in the front section, including a target material and a mobile trolley, the target material is fixed on the vertical panel of the mobile trolley and is located in a supporting drawer box; the mobile trolley travels on a vertical track, and a sealed door bracket composed of a frame and a vertical panel is arranged on it, the surface of the vertical panel facing the window direction is a sealing surface and is sealed with the window frame of the window, and a groove-shaped supporting drawer extending toward the window is fixed on the vertical panel; a rotating cylindrical medium-frequency magnetron sputtering target device is arranged in the rear section, including a sputtering target and a mobile trolley assembly, the sputtering target is fixed on the vertical panel and is located in the supporting drawer box; the target material and the sputtering target are pushed into or pulled out of each chamber respectively by the mobile trolley. The coating color of the coating of the present invention is uniform and stable, and the process is reliable.

The application discloses a preparation method of a double-layer protective coating with a self-repairing feature, and aims at solving the problems of low bonding strength of a high-entropy alloy coating and a base body and difficulty in maintaining long-time service stability. The preparation method comprises the following steps: (1) base body pretreatment; (2) calculating the average atomic radius difference, VEC, mixing entropy and mixing enthalpy of a high-entropy alloy multi-element system, and mixing and ball milling corresponding single-element powders; (3) adopting a high-energy beam deposition process to perform cladding deposition on the mixed metal powders; (4) polishing, polishing and cleaning the high-entropy alloy coating; and (5) adopting an oxidation process or a nitriding process to form an oxidation layer or a nitriding layer on the high-entropy alloy coating in situ. The double-layer protective coating with the self-repairing feature has the double-layer protection of the high-entropy alloy coating with excellent corrosion resistance and the in-situ oxidation / nitriding layer, wherein the high-entropy alloy coating is designed to utilize the dilution of the base body to form stable intermetallic compounds and improve the matching of the coating and the base body.

The application discloses a semiconductor device structure, a preparation method thereof and a semiconductor device. The semiconductor device structure comprises: an active region arranged on a substrate; a contact hole arranged on the active region; and a doped semiconductor layer filled in the contact hole, wherein the doped semiconductor layer has a recess structure on a top surface thereof, and the recess structure increases a contact area on the top surface of the doped semiconductor layer. The application increases the doping concentration of the doped semiconductor layer to be higher than a conventional doping concentration, so that the doped semiconductor layer forms filling defects when being filled, and the recess structure is formed on the top surface, thereby significantly increasing the contact area, greatly reducing the contact resistance and the resistance of the contact hole itself, significantly reducing the overall resistance of a circuit, reducing RC delay, reducing power consumption, enhancing signal integrity, prolonging service life, and being beneficial to further miniaturization of the device.

The present invention provides a BHET purification method, which comprises: mixing a BHET-containing mixture with a solvent to obtain a BHET solution to be purified, and carrying out filtration treatment to obtain a filtrate; the filtrate passes through a resin bed layer at the flow speed of 2-10 BV / h for purification treatment, and BHET purified liquid is obtained; the resin bed layer comprises H-type gel cation exchange resin, OH-type gel anion exchange resin and a solvent, at least part of the surface of the H-type gel cation exchange resin contains sulfonic acid groups and H < + >, and at least part of the surface of the OH-type gel anion exchange resin contains quaternary ammonium groups and OH <->; the volume ratio of the H-type gel cation exchange resin to the OH-type gel anion exchange resin is 1: (1-5). The method can be used for removing metal ion impurities and inorganic impurities.

The present application relates to the technical field of EVA production waste heat recovery, and is a device and method for recycling low-pressure steam by-produced during EVA production, which comprises the following steps: when EVA products with VA content are produced, a screw type steam compressor is used to compress low-pressure steam with a pressure lower than 0.45 MPag to 0.45 MPag; when EVA products with high VA content are produced, a screw type steam compressor is used to compress mixed low-pressure steam to 0.45 MPag. When the steam by-produced from the hot water system of the EVA production device is compressed by using a compression device, the present application can maximize the volumetric efficiency of the screw type steam compressor by mixing the two by-produced streams with a large flow difference before compression, so as to achieve the purpose of energy saving; and compared with the comparative example, the present application has better energy saving benefits, investment recovery rate and standard coal saving rate.

The invention discloses a vapor chamber coated with a diamond coating on the surface and a preparation method of the vapor chamber, metal is plated on the surface of diamond powder to obtain diamond powder containing a metal coating, the diamond powder containing the metal coating and the metal powder are mixed to obtain mixed powder, then the mixed powder is sprayed on the surface of a vapor chamber base plate through cold gas power, and the vapor chamber is prepared. The vapor chamber substrate containing the composite coating is obtained, the composite coating on the surface of the vapor chamber substrate is subjected to laser remelting to obtain the vapor chamber substrate containing the laser remelting coating, and then the vapor chamber substrate is subjected to annealing heat treatment to obtain the vapor chamber substrate with the surface coated with the diamond coating. The preparation method is simple, the process is stable and reliable, the preparation speed is high, the material size is not limited by the size of a cavity of a high-temperature and high-pressure synthesis press, and the prepared vapor chamber has the performance advantages of high thermal conductivity, low thermal expansion coefficient, excellent thermal cycle performance and high bending strength and has wide market application prospects.

The invention provides a preparation method of environment-friendly plastic woven cloth for high-value utilization of green reclaimed materials, and relates to the technical field of plastic woven cloth. According to the formula of the environment-friendly plastic woven fabric for high-value utilization of the green reclaimed material, the formula comprises the following components in parts by mass: 80-95 parts of a reclaimed polypropylene matrix material; 2-8 parts of a reinforcing agent which is selected from one or a combination of two of polypropylene or high-density polyethylene; wherein the melt index of the PP ranges from 3 g / 10 min to 8 g / 10 min, and the melt index of the HDPE ranges from 0.1 g / 10 min to 2.0 g / 10 min; the compatilizer is selected from one or more of maleic anhydride grafted polypropylene, maleic anhydride grafted polyethylene and ethylene-octylene copolymer grafted maleic anhydride. According to the process, impurities can be removed, the mechanical performance of the product is close to or even superior to that of a raw material, meanwhile, the added value of the product is greatly improved, the application range is widened, the regenerated material can meet high strength and special requirement scenes, in addition, energy consumption can be reduced, carbon emission is reduced, and the process is energy-saving, environment-friendly and very low in cost.

This utility model relates to the field of coating thickness testing technology, and in particular to a thickness testing device applicable to different coatings. The device includes a housing and a thickness testing control structure mounted on the housing. The thickness testing control structure includes a sensing module, a non-magnetic material processing module, a magnetic material processing module, a main control module, a power supply module, and a Bluetooth module. The power supply module provides power to the sensing module, the non-magnetic material processing module, the magnetic material processing module, the main control module, and the Bluetooth module. This utility model provides a thickness testing device applicable to different coatings, capable of testing the thickness of various coatings. This not only improves work efficiency but also ensures product quality and reduces waste and losses caused by traditional testing methods.

The present invention provides a method for purifying a 7-dehydrocholesterol intermediate, using 7-dehydrocholesterol acetate impurities as a template, based on a low eutectic solvent as a functional monomer, preparing a molecular imprinting polymer, and then using the molecular imprinting polymer to separate 7-dehydrocholesterol acetate impurities from a crude 7-dehydrocholesterol acetate product to obtain high-purity 7-dehydrocholesterol acetate. The method is easy to operate, the process is stable and reliable, and the impurities can be effectively removed to obtain 7-dehydrocholesterol acetate with an impurity content of less than 0.10% and a purity of more than 97.0%.

The utility model provides a side slope anti-scour structure which comprises a transverse protection ditch, and the transverse protection ditch comprises a transverse main ditch, a plurality of side water guide ditches connected with the transverse main ditch and distributed at intervals, and a slope surface water guide ditch located on a slope surface and connected with the side water guide ditches; and the longitudinal protection slope comprises a protective layer. According to the side slope anti-scouring structure, double protection measures of the transverse protection ditch and the longitudinal protection slope are taken, construction is easy, the technology is reliable, scouring damage of rainwater to a weak side slope can be fundamentally reduced, the side slope collapse risk is reduced, the production safety of an open pit in the rainy season is improved, and the slope cutting and load shedding cost is saved.

The utility model belongs to the technical field of molecular sieve dehydration and drying, and discloses a high-temperature waste gas regeneration molecular sieve gas drying device which comprises two molecular sieve drying tanks, an electromagnetic valve, a tank body support, a control cabinet, a temperature and humidity sensor and a spiral gas drying pipe. According to the molecular sieve gas drying device for high-temperature waste gas regeneration, the spiral gas drying pipe is wrapped in the molecular sieve, and the device has the advantages that the spiral gas drying pipe does not reduce the flux of gas, and meanwhile, the path of the gas in the drying tank is longer, so that the gas can be in contact with the gas for sufficient time. When moist air is introduced, the spiral air drying pipe can effectively dry the moist air; when high-temperature waste gas is introduced to regenerate the molecular sieve, the spiral gas drying pipe not only can heat the regenerated molecular sieve, but also can regenerate the molecular sieve by using hot gas, so that moisture is quickly taken away, and the regeneration efficiency of the molecular sieve is greatly improved.

The application provides a cable sheath, a preparation method thereof and a cable. The cable sheath comprises a three-layer structure arranged in sequence from inside to outside: a core layer comprising a porous framework, a liquid metal and an encapsulation layer, the liquid metal forming a continuous conductive network; a middle layer comprising a light-curable elastic polymer matrix, microcapsules and reinforcing particles; and an outer protective layer comprising a light-curable stimulus-responsive polymer matrix and functional nanomaterials, at least one of the heat conduction performance and the electromagnetic shielding efficiency of the outer protective layer being capable of changing according to changes in the external environment, the core layer, the middle layer and the outer protective layer being covalently bonded through an interfacial compatibilizer and integrated light curing. The cable sheath can realize mechanical strength self-healing and electrical self-healing after mechanical damage, and self-adaptive adjustment to changes in the external temperature and electromagnetic field environment, and the layers of the cable sheath are covalently bonded, so that the interlayer bonding force is strong and the structure is stable.