76results about How to "Guaranteed free expansion" patented technology

The invention discloses a core-shell structure silicon carbon composite material and a preparation method thereof. The composite material is of a core-shell structure. The core-shell structure includes a shell composed of a carbon layer and a core composed of porous nano silicon. An air gap layer is arranged between the shell and the core. The preparation method comprises the steps that silicon dioxide particles perform magnesiothermic reduction reaction through magnesium powder, a reduction product is subjected to in-situ coating through an organic macromolecular carbon source, then carbonization is performed, and a carbonization product is corroded with hydrofluoric acid to obtain the silicon carbon composite material. The silicon carbon composite material has good stability, can well buffer silicon volume expansion and improve material conductivity, and thus ensures the cycle stability of electrodes. The silicon carbon composite material preparation process is simple and is suitable for industrial production, and the raw materials are wide in source.

The invention discloses a solar cavity-type heat absorber capable of generating overheated steam. The heat absorber comprises a water cooling wall and a superheater; the water cooling wall is a cavity which is provided with an opening and defined by a plurality of membrane-type pipe panels, and the water cooling wall is in vertical parallel arrangement; the superheater is positioned at the inner side of the water cooling wall; the pipe panel of the superheater is in horizontal arrangement; the inner side of the water cooling wall is provided with an 'H'-shaped water cooling connection piece which limits and fixes the superheater; and the 'H'-shaped water cooling connection piece consists of a first vertical pipe section, a horizontal pipe section and a second vertical pipe section. The problems of the transient heat match of the water cooling wall with the overheated parameters and the superheater and heat stress of a superheater pipe are solved through the cavity-type heat absorber, thus the heat absorber can adopt the parameters of the superheater, and the power station efficiency is improved.

The invention discloses a vibro-replacement stone column machine and a construction method thereof. The vibro-replacement stone column machine comprises a crane system, an automatic feeding system, a drill rod system and a vibrator system. The method includes the steps that when the vibro-replacement stone column machine conducts vibrator ultra-deep construction, a steel wire rope winding device enables a vibrator connected below a telescopic guide rod to descend gradually by releasing sleeves in a column hole of the telescopic guide rod layer by layer; while the steel wire rope winding device enables the sleeves in the telescopic guide rod to be released layer by layer, a cable winding device, a water pipe winding device and a gas pipe winding device synchronously release a cable, a water pipe and a gas pipe placed in the telescopic guide rod; the vibrator vibrates downwards continuously through electric power, clear water and gas supplied by the cable, the water pipe and the gas pipe which descend synchronously along with the vibrator, so that an ultra-deep vibro-replacement stone column hole is formed; after the ultra-depth vibro-replacement stone column hole reaches a preset depth, the hole is cleaned up, stone is thrown into the hole, a column can be manufactured in a vibration and compaction mode, and thus an ultra-depth vibro-replacement stone column can be formed.

The invention relates to an optical fiber connector and a manufacturing method thereof. The optical fiber connector comprises a housing and a fiber insertion core arranged in the housing. The end surface of the fiber insertion core is provided with at least one lens. The cavity at one end of the housing is equipped with an insertion core protection structure for protecting the end surface of the insertion core so as to prevent the lens surface at the end surface of the fiber insertion core from being damaged or scraped. The insertion core protection structure is internally provided with the fiber insertion core and an elastic component sleeved on a fiber insertion core tubular body to ensure free telescoping of the insertion core protection structure. The other end of the housing is provided with an extension pipe. The extension pipe is connected with a tail sheath assembly which carries out bending protecting on an optical cable and guarantees that the optical fiber connector can transmit optical signals normally under the bending pressure condition. An elastic buckle structure for enabling the optical fiber connector to be buckled to a corresponding insertion hole of an adapter is integrated to the outer wall of the housing.

The invention discloses a ground gas turbine single-tube combustion chamber adopting axial gas inflow. The ground gas turbine single-tube combustion chamber comprises a combustion chamber gas inlet pipeline, a case and a combustion chamber outlet section. The upper end of the case is connected with the combustion chamber gas inlet pipeline, the lower end of the case is connected with the combustion chamber outlet section, and a flame barrel is mounted on the combustion chamber outlet section. The flame barrel is connected with the combustion chamber gas inlet pipeline through a natural gas inlet pipeline; a natural gas nozzle, a first-level hydrocyclone assembly and a second-level hydrocyclone assembly are mounted at the top end of the head of the flame barrel, and the natural gas nozzle is sleeved with the first-level hydrocyclone assembly and the second-level hydrocyclone assembly. A plurality of natural gas injection holes are formed in the natural gas nozzle; a main combustion hole is formed in the upper side of the middle section of the flame barrel, and an igniter mounting assembly is arranged at the upper end of the main combustion hole; a mixing hole is formed in the lower side of the middle section of the flame barrel. The invention further discloses internal structures of the hydrocyclone assemblies. According to the combustion chamber, fuel and air can be mixed fast and evenly, a stable reflux area is formed at the head of the flame barrel, and the overall service life of the combustion chamber is prolonged.

The invention discloses a single-tube beam capable of releasing temperature stress and suitable for a transformer substation continuous rigid frame. The single-tube beam capable of releasing temperature stress and suitable for the transformer substation continuous rigid frame solves the problem that due to accumulation of stress on a single-tube beam in the length direction, an end supporting foundation cracks. The single-tube beam capable of releasing temperature stress and suitable for the transformer substation continuous rigid frame comprises a single tube (2), an extending single tube (2) and a connecting tube (3), the left end of the connecting tube (3) is connected into a right end tube of the extending single tube (1) in a sleeved mode, the right end of the connecting tube (3) is movably connected into a left end tube of the single tube (2) in a sleeved mode, an lubrication grease layer (11) is arranged between the outer side wall at the right end of the connecting tube (3) and the tube inner side wall at the left end of the single tube (2), single-end bolts (8) are arranged between an extending single tube flange (6) and a single tube flange (7) in a penetrating mode, compression springs are arranged at the two ends of the single-end bolt (8) respectively, and a spacing seam (15) is formed between the side surface of a left end port of the extending single tube (1) and the side surface of a left end port of the single tube (2). The single-tube beam capable of releasing temperature stress and suitable for the transformer substation continuous rigid frame is particularly suitable when the continuous rigid frame needs to be lengthened during expanding of a transformer station.

The invention provides a positioning device for an attemperator lining hybrid tube. The positioning device ensures free expansion of the hybrid tube and is convenient to assemble. The positioning device comprises a thick wall connecting box and the lining hybrid tube, wherein the lining hybrid tube is sleeved in the thick wall connecting box. The positioning device is characterized in that the outer ring surface of the lining hybrid tube is provided with a positioning bump, the positioning bump clings to the inner wall of the thick wall connecting box, a positioning groove is welded on one side of the inner wall of the thick wall connecting box, one end of the lining hybrid tube is abutted into a concave groove of the positioning groove, a limit block is welded on the other side of the inner wall of the thick wall connecting box, the tail end of the limit block is provided with a stopper, and the bottom of the ring surface at the other end of the lining hybrid tube is supported on the upper end surface of the front of the limit block.

The invention discloses a dislocation-free expansion joint node for box type profiled steel sheets. The dislocation-free expansion joint node comprises a rigid connecting strip and two transitional connecting members, wherein the transitional connecting members are used for the end surfaces of the box type profiled steel sheets respectively arranged at two sides of an expansion joint, one end of the rigid connecting strip is fixed on one transitional connecting member and used as a fixing end, and the other end of the rigid connecting strip horizontally extends out along the longitudinal direction of the box type profiled steel sheets, is used as a free end and extends into a longitudinal sliding chute in the other transitional connecting member, so that the free end of the connecting strip can move along the longitudinal sliding chute. According to the dislocation-free expansion joint node, the vertical dislocation at the expansion joint of the two box type profiled steel sheets can be eliminated, meanwhile, free expansion and withdrawal of the longitudinally adjacent two box type profiled steel sheets can be ensured, and therefore the phenomenon that the two box type profiled steel sheets at two sides of the expansion joint are vertically staggered and pulled apart is effectively avoided on the premise of ensuring that box type profiled steel sheets freely expand and withdraw, and therefore a roof boarding can be effectively prevented from leaking.

The invention relates to a rotation-based combined desulfurization and denitrification distribution system. The system comprises a rotation type dry desulfurization and adsorbent regeneration device,wherein the rotation type dry desulfurization and adsorbent regeneration device comprises a shell, an adsorption bin and a regeneration bin are formed in the shell, a first rotation bin box containingan absorbent is mounted in the adsorption bin, a second rotation bin box containing an absorbent is mounted in the regeneration bin, a hollow rotating shaft is arranged between the first rotation binbox and the second rotation bin box, and the first rotation bin box and the second rotation bin box can rotate along the hollow rotating shaft; and a high-temperature electric dust remover is connected with the adsorption bin, and the adsorption bin is connected with a selective catalytic reduction denitrification device. The high-temperature electric dust remover and the denitrification device are distributed in front of an SCR device, so that the content of dust in the dust entering the SCR device is effectively controlled, SO2 in the smoke is completely removed, and ammonium hydrogen sulfate is not generated even when the escape amount of ammonia at an outlet of an SCR system is great.

The invention relates to a method for manufacturing buckling restrained braces. The method comprises following specific steps that: sleeves are vertically placed into an iron stand; the side, of each sleeve, welded to a lower sealing plate is downwardly arranged; the gap between each sleeve and the corresponding lower sealing plate is sealed with silica rubber, so that grout leakage can be prevented; grouting materials are poured into the sleeves in batch; and then the upper sealing plates are installed after the strength of the grouting materials meets requirements. By employing the method, the production efficiency of the buckling restrained braces is improved, the buckling restrained braces can be produced in batch; the production cost is greatly reduced; the supporting appearance is more beautiful; energy dissipating and damping effects can be achieved; the buckling restrained braces are convenient to disassemble and check; and a foundation of the further promotion and application of the buckling restrained braces is laid.

The invention relates to a single pipe loading and unloading arm for a low-temperature ship. The single pipe loading and unloading arm comprises a supporting structure, a pipe system, a hydraulic drive system, a maintenance platform, a nitrogen gas blowing and sweeping system, an emergency escaping system, a hydraulic substation, an upper rope pulley, a steel wire rope and a lower rope wheel; the steel wire rope is arranged between the upper rope wheel and the lower rope wheel, the maintenance platform is arranged on the upper portion of the loading and unloading arm, the nitrogen gas blowing, sweeping and distributing system is arranged near an inlet flange of the loading and unloading arm, and the hydraulic substation is arranged on the side face of a stand column. The pipe system comprises a stand column pipe, an inner arm pipe and an outer arm pipe, the upper end and the lower end of the stand column pipe are constrained with a shaft, and it is guaranteed that the stand column pipe stretches out and contracts back freely in the axial direction and rotates freely in the axial direction; one end of the inner arm pipe is constrained with a hinge, and the other end of the inner arm pipe is constrained with a plane; one end of the outer arm pipe is constrained with a hinge, and the other end of the outer arm pipe is constrained with a plane. By means of the single pipe loading and unloading arm, the pipe system can stretch and contract freely under an environmental temperature as well as an ultra-low temperature working condition, and thus internal stress generated by temperature deformation is eliminated.

The invention relates to the field of bricklaying of a light-weight brick structure furnace wall lining of an industrial furnace, in particular to a jumping bin bricklaying method of a light-weight brick furnace wall of an annealing furnace. The jumping bin bricklaying method of the light-weight brick furnace wall of the annealing furnace is characterized in that the method is carried out according to the following steps of (1) preparation; (2) assembly and bricklaying of wall plates; (3) laying and adhesion; (4) jumping bin bricklaying; and (5) bricklaying of an upper layer in sequence. The jumping bin bricklaying method of the light-weight brick furnace wall of the annealing furnace is high in bricklaying quality, high in bricklaying speed, low in cost, little in environmental pollutionand long in service life.

The invention relates to a relay protection secondary operation isolation device. At present, in order to prevent a worker from mistakenly contacting and mistakenly touching the wiring terminal of anoperation terminal strip and mistakenly touching and mistakenly operating the operation terminal in operating, the operating terminals and devices in the working protection screen cabinet strip need to be obviously isolated, striking warning signs need to be arranged, and operation safety is guaranteed. The relay protection secondary operation isolation device comprises a stretchable red warning strip cloth (1) and a cylindrical warning strip cloth storage box (2). The stretchable red warning strip cloth is connected with the cylindrical warning strip cloth storage box, the cylindrical warningstrip cloth storage box is made of PVC materials, the reel spring is fixed in the cylindrical warning strip cloth storage box, free stretching and retracting of the warning strip cloth are guaranteedthrough the reel spring, and white characters of operation equipment are printed on the stretchable red warning strip cloth. The relay protection secondary operation isolation device is applied to the relay protection device.

The invention discloses a method and a system for water and gas combined sand settling prevention for a vibroflotation gravel pile machine. A guide rod of a drill rod system of the vibroflotation gravel pile machine is a telescopic guide rod. The method comprises the following steps of when the vibroflotation gravel pile machine performs the ultra-deep construction of a vibroflotation device, gradually extending or retracting the telescopic guide rod in a pile hole along with the increase or decrease of the vibroflotation depth, so as to enable the vibroflotation device under the telescopic guide rod to perform upward vibroflotation for hole forming or upward densification for pile manufacturing; when the telescopic guide rod is retracted or extended, continuously filling water into the telescopic guide rod, and filling pressure water into the telescopic guide rod; enabling the water pressure in the telescopic guide rod to be always higher than the water pressure of the pile hole, and then enabling the pressure water in the telescopic guide rod to flow to mud in the pile hole through a sleeve pipe gap of the telescopic guide rod, so as to prevent the sand in the mud from entering and clamping in the sleeve pipe gap; continuously injecting air into the telescopic guide rod, blowing the sand in the telescopic guide rod from bottom to top, and enabling the sand to btar in the pipe, so as to prevent the sand settling in the pipe.

The invention relates to a detachable settlement joint high-waterproofing structure and a construction method thereof. According to the detachable settlement joint high-waterproofing structure, clamping platforms are arranged at the tops of concrete wall bodies on two sides of a settlement joint; hydrophilic expanding sealing strips are embedded in the clamping platforms; rubber sealing plates covering the settlement joint are arranged above the hydrophilic expanding sealing strips; each rubber sealing plate comprises a groove part which is arranged in the cavity of the settlement joint and has a V-shaped section, and two fixed parts which are respectively connected with two side walls of the groove part; steel plates are respectively arranged above the two fixed parts, and a gap is reserved between the two steel plates and is positioned above the settlement joint; and the steel plates and the fixed parts are fixed on the concrete wall bodies through expansion bolts. The detachable settlement joint high-waterproofing structure can be used for effectively preventing water seepage of the settlement joint, has a reliable waterproofing effect, and is easy to maintain when water seepage happens due to the detachable structure, so that time, labor and cost can be saved.

The invention relates to a novel stripping element tight connecting device. A stripping steam vertical pipe passes through a cone-shaped baffle plate, and the stripping element tight connecting device is tightly connected with the stripping steam vertical pipe and the cone-shaped baffle plate. The stripping element tight connecting device comprises a compressing baffle plate, a connecting plate, a compressing ring, a silk screen, a sleeve and ceramic fibers, wherein the inner side face of the compressing baffle plate is fixedly connected with the stripping steam vertical pipe, the upper end of the connecting plate is fixedly connected with the compressing baffle plate, the lower end of the connecting plate is fixedly connected with the compressing ring, the compressing ring extends into the sleeve, the silk screen is located below the compressing ring and meanwhile is arranged on the top of a circular gap between the sleeve and the stripping steam vertical pipe, the ceramic fibers are filled in the circular gap below the silk screen, the sleeve is fixedly connected with the cone-shaped baffle plate, and the circular gap is formed between the lower end opening of the sleeve and the stripping steam vertical pipe. According to the technical scheme, not only can the free swelling deformation between the cone-shaped baffle plate and the stripping steam vertical pipe be ensured, but also the device has the sealing effect and can be used for effectively preventing the stripping steam vertical pipe from being worn through.

The invention relates to a superheater protecting device, in particular to a superheater protecting device with a thermal expansion eliminating function, and belongs to the technical field of boiler structures. The problem that when a superheater serpentine pipe in an existing boiler is arranged in a convection pipe bundle zone, a welding line at the connecting position of a header and the serpentine pipe is prone to cracking is solved through the superheater protecting device with the thermal expansion eliminating function. The superheater protecting device with the thermal expansion eliminating function comprises a vertical support, a transverse support set and a pipe bundle fixing device. The pipe bundle fixing device is supported and positioned through the transverse support set fixedly connected to a lower boiler barrel. The vertical support is of a sealed cubic structure. The header and the connecting position of the header and the serpentine pipe are located in the vertical support and sealed through the vertical support. The serpentine pipe is fixed through the pipe bundle fixing device. The superheater protecting device with the thermal expansion eliminating function is used for protecting a superheater.