793 results about "Single tube" patented technology

The invention belongs to the technical field of coating equipment, particularly relates to a chamber gas inlet pipeline and gas flow uniformizing structure of PECVD (Plasma Enhanced Chemical Vapor Deposition) equipment, and aims to solve the problems that the dispersion concentration of dissociated chamber gas of the existing PECVD equipment is non-uniform, the gas concentration close to the inlet end of a gas pipeline exceeds that of other areas, and the gas flow uniformizing structure is not uniform. In order to solve the problems that the plasma concentration is too high in the part of film forming process, the phenomenon that particulate matter is gathered on half and exceeds the standard is caused, and meanwhile the uniformity of final film forming becomes poor due to the fact that the plasma concentration is inconsistent in the film forming process, the following scheme is provided that an air inlet cavity is included. The chamber gas inlet pipeline and the gas flow uniformizing structure of the PECVD equipment disclosed by the invention can assist the gas flow uniformizing plate I and the gas flow uniformizing plate II in diffusing gas introduced from the center above the chamber to the periphery; the risk that particulate matter exceeds the standard due to uneven concentration dispersion of single-pipeline gas inlet is avoided through secondary flow uniformizing of the first gas flow uniformizing plate and the second gas flow uniformizing plate, and the added secondary flow uniformizing can further improve the uniformity of the membrane.

The utility model relates to the technical field of pipe cutting devices, in particular to an automatic cutting device for a three-way pipe fitting. According to the technical scheme, the device comprises a base, a sliding table is slidably mounted at the top of the base, a single-pipe-head clamping plate is fixedly mounted at the top end of the sliding table, a protective baffle is fixedly mounted on the side, away from the sliding table, of the top of the base, a transverse moving frame plate is slidably mounted at the top end of the sliding table, and a first rubber column head is clamped and inserted into the transverse moving frame plate; a double-pipe-head clamping assembly is fixedly installed at the top end of the base, two clamping plates are arranged on the double-pipe-head clamping assembly, and second rubber column heads are fixedly installed on the inner side walls of the clamping plates. By means of the single-pipe-head clamping plate and the double-pipe-head clamping assembly, any port of the three-way pipe can be clamped and fixed, the pipe positioning difficulty is reduced, the rubber column heads support the inner walls of the pipe heads, the deformation probability during pipe cutting can be reduced, cutting is convenient, and the production efficiency is effectively improved.

The utility model discloses a well group type jet pump same-well production, injection, drainage and gas production system which comprises a gas-liquid mixture outlet manifold, a gas-liquid separator, a power liquid sedimentation system, a ground power system, a power liquid injection manifold, a reinjection liquid manifold, a wellhead gas collection system and a plurality of single-pipe jet pump same-well production and injection systems, the multiple single-pipe jet pump same-well production and injection systems are arranged in parallel and connected with the gas-liquid separator through the gas-liquid mixture outlet manifold. An outlet of the gas-liquid separator is provided with a gas phase outlet and a liquid phase outlet; a gas phase outlet of the gas-liquid separator is connected with a wellhead gas collection system; a liquid phase outlet of the gas-liquid separator is connected with a power liquid sedimentation system, the power liquid sedimentation system is connected with a ground power system, and the ground power system is connected with a plurality of single-pipe jet pump same-well production and injection systems through a power liquid injection manifold and a reinjection liquid manifold respectively; and a liquid phase outlet of the gas-liquid separator is connected with an external conveying pipeline.

An internal floating piston (IFP) having circumferential seal groove 2 on its external surface between two walls 3, 4 of the external surface, and an anti-tipping feature 8 increasing a length of said

The invention relates to the technical field of screw conveyors, in particular to an end shaft hole dynamic sealing structure of a chemical single-pipe screw conveyor. Comprising a conveying shaft rotationally connected to a rack; the flange is connected with the end cover, a through hole is formed in the middle shaft, the conveying shaft is in clearance fit with the through hole, the inner side face of the flange is coaxially connected with an end cover leakage-proof ring, and the end cover leakage-proof ring is in clearance fit with the conveying shaft. The annular limiting seat is coaxially connected to the outer side of the flange connecting end cover; the packing body is arranged between the annular limiting seat and the conveying shaft; the inner wall of the packing pressing ring is in clearance fit with the conveying shaft, the packing pressing ring comprises a flange connecting part and a pressing part, the flange connecting part is adjustably connected to the annular limiting seat through a connecting piece, and the pressing part abuts against the outer end of the packing body. According to the end shaft hole dynamic sealing structure of the spiral conveyor, the acting force of the spiral blade for pushing materials can be eliminated, the materials are prevented from being extruded into a gap between the packing and the spiral shaft, and the sealing performance is good.

The invention discloses a single-pipe grouting annulus slurry replacement packer. The single-pipe grouting annulus slurry replacement packer is provided with a drill rod joint; one end of the drill rod joint is coupled with an inner pipe assembly; the inner pipe assembly is sequentially sleeved with a first outer pipe, a rubber sleeve short section and a second outer pipe in the axial direction. Through cooperation of the structures, the working processes of setting, grouting, annulus grout replacement and cement waiting and unsetting are achieved. According to the packer provided by the invention, local grouting in a hole is realized, so that the grouting amount and the grouting pressure can be effectively guaranteed; and drill holes except for the packer cannot be filled with grouting liquid in a coagulation waiting manner, through hole drilling is not needed, and a large amount of repeated footage is reduced.

The invention provides a Z-shaped prefabricated concrete wind power tower drum duct piece and a wind power tower drum. The concrete wind power tower drum duct piece comprises a duct piece lower layer and a duct piece upper layer. The transverse sections of the segment lower layer and the segment upper layer are concentric arcs with the same thickness and the same height and have an overlapped part, the thickness of the overlapped part is twice that of the segment lower layer or the segment upper layer, and the height of the overlapped part is 1 / 4-1 / 2 that of the segment lower layer or the segment upper layer; the overall height of the tower tube segment is 3-4 m. The wall thickness of a tower formed by the Z-shaped prefabricated concrete wind power tower tube segments is twice that of a tower formed by common arc-shaped segments, but the thickness of a single segment is not increased, and the bending resistance of the tower tube is improved while the Z-shaped prefabricated concrete wind power tower tube segments have the light characteristic. The inner layers of every two adjacent layers of annular units are nested in the outer layers, constraint is formed in the radial direction, the influence of pipe piece transverse splicing seams on the stability of the tower barrel is reduced, and the shear capacity of the tower barrel is improved.

The utility model discloses a double-switch double-water-outlet purified water faucet which comprises a faucet body, a water inlet connecting pipe, a plastic clamping sleeve, a sealing rubber ring, a connecting nut sleeve and a water guide pipe, the water inlet connecting pipe is communicated with the bottom end of the faucet body, and the outer surface of the water inlet connecting pipe is sleeved with the plastic clamping sleeve and the sealing rubber ring in an up-down opposite mode. The connecting nut sleeve is rotationally connected to the bottom end of the water inlet connecting pipe, the water guide pipe is communicated with the connecting nut sleeve, and the surface of the faucet body comprises a first purified water switch and a second purified water switch which are symmetrically arranged on the surface of the faucet body; the first purified water outlet hose and the second purified water outlet hose are located in the faucet body, the oneness of a traditional faucet can be changed, the single-pipe double-water-outlet effect can be achieved, the simple state is achieved, meanwhile, the faucet can be independently opened and closed, the water mixing phenomenon is avoided, and the installation space is saved.

The utility model discloses a soil vibration screening instrument, which belongs to the technical field of soil screening, and a vibration screening box comprises a vibration adjusting frame and a multi-layered spiral screening assembly, the vibration adjusting frame comprises a vibration tray, a screw rod, a central column and a fixing ring; the multi-layer spiral screening assembly comprises a single-pipe spiral flow guide channel and a multi-layer spiral screening ring which are communicated from top to bottom, the single-pipe spiral flow guide channel is arranged in the annular space and fixedly connected to the top of the center column, and the multi-layer spiral screening ring is connected to the center column in a penetrating and sleeving mode and connected to the screw. According to the screening instrument, screening parameters can be adjusted in real time, so that the screening precision and the screening efficiency are improved, and the cost consumption is reduced.

The invention provides a pipeline route design method based on a single-pipe mathematical model. The method comprises the following steps that a three-dimensional vertical section and a UCS coordinate system are determined according to a live-action three-dimensional model of a pipeline laying target area; establishing a single-tube mathematical model according to the three-dimensional longitudinal section and a UCS coordinate system; according to the single-pipe mathematical model, micro-piping laying is carried out on the pipeline; in the process of laying the micro-piping on the pipeline, calculating a direction similarity index according to the similarity between the pipeline shape and the pipe ditch shape; calculating a stress accumulation index according to the elastic modulus and the inertia moment; and constructing a total cost calculation model based on pipeline laying, and performing cost optimization based on the direction similarity index and the stress accumulation index so as to optimize the pipeline laying micro-piping. The method has the technical effects that the laying design precision and efficiency are remarkably improved, the cost is reduced, and the safety of the system can be enhanced.

The utility model discloses a parallel detachable concentric tube robot for minimally invasive surgery. The parallel detachable concentric tube robot comprises an abdominal sheathing canal, a plurality of single-arm driving systems and flexible instrument arms, the multiple single-arm driving systems are connected in parallel, the single-arm driving systems are connected with the flexible instrument arms, the multiple flexible instrument arms are arranged in instrument arm channels formed in the abdomen entering sheathing canal respectively, and each flexible instrument arm comprises a plurality of concentric tubes; the single-arm driving system comprises a single-tube driving module, a guiding device and a concentric tube are arranged in the single-tube driving module, a driving mechanism, a linear transmission mechanism and a rotary transmission mechanism are arranged in the guiding device, the linear transmission mechanism and the rotary transmission mechanism are both connected with a driver in the driving mechanism, and the linear transmission mechanism is connected with the rotary transmission mechanism. The concentric pipe is installed on the rotary transmission mechanism, and the anti-collision device is arranged on the rotary transmission mechanism. The parallel type design is adopted, each guide device independently controls the corresponding concentric tube, and surgical instruments are convenient to replace.

The invention discloses a multi-stage self-triggering type liquid carbon dioxide grading fracturing method. The method comprises the following steps that early-stage preparation work is conducted on a multi-stage self-triggering type fracturing pipe; liquid carbon dioxide is filled into the multi-stage self-triggering type fracturing pipe; the multi-stage self-triggering type fracturing pipe is placed in a drill hole in the target fracturing position and then connected with an exploder; the exploder is started, and the multi-stage self-triggering type fracturing pipes conduct multi-stage fracturing in sequence; and after fracturing is completed, the multi-stage self-triggering type fracturing pipe is recycled for reuse. The grading self-triggering fracturing device is constructed on the basis of the gas transfer rule and the memory alloy material, the liquid carbon dioxide single-point excitation and multi-stage self-triggering grading fracturing method is provided, and the problems that power of a liquid carbon dioxide fracturing single pipe is insufficient, and wiring of multiple pipes is complex are solved.

The invention discloses a comprehensive evaluation method and device for toughness of a water supply pipe network system and a computer medium. Firstly, hydraulic model parameters of a water supply pipe network are obtained; then, a low-stress scene, a medium-stress scene and a high-stress scene are constructed, the low-stress scene is constructed according to historical water demand data, the medium-stress scene is constructed by superimposing pipeline failure on the basis of the low-stress scene, and the high-stress scene is constructed by superimposing fire working conditions on the basis of the medium-stress scene; according to the hydraulic model parameters of the water supply pipe network, the water supply amount and the water demand amount of the water supply pipe network in a low-stress scene, a medium-stress scene and a high-stress scene are calculated respectively; and finally, according to the water supply amount and the water demand amount of the water supply pipe network in the low-stress scene, the medium-stress scene and the high-stress scene, calculating a plurality of strain indexes for quantifying the toughness of the water supply pipe network system. According to the method, the system toughness of the water supply pipe network is evaluated at low calculation cost through scene simulation of only traversing the single pipe failure and superposing the single-point fire working condition on the basis of the single pipe failure.

The invention provides an intelligent gamete and embryo storage management system for a reproductive center, which comprises a heat preservation module, a liquid nitrogen storage module, a liquid nitrogen storage module, a liquid nitrogen storage module and a liquid nitrogen storage module which are connected with one another, the liquid nitrogen recycling module is used for recycling, separating and purifying gaseous nitrogen by utilizing a condenser and a closed-loop pipeline; the intelligent monitoring module is used for monitoring the liquid nitrogen tank in real time by using various sensors, processing and analyzing monitoring data, and calculating and judging whether the current state is a safe state or not; the analysis and prediction module is used for calculating the fault probability of the liquid nitrogen tank by utilizing a machine learning model; according to the high-density storage module, a multi-layer storage frame, a single-tube container and a multi-tube container are installed in the liquid nitrogen tank; and the centralized management module is used for constructing a sample file and remotely monitoring the real-time state and abnormity of the liquid nitrogen tank. Liquid nitrogen volatilization can be reduced to the maximum extent, the sample safety is guaranteed, the storage efficiency is improved, and the increasing requirements of test tube babies are met.

The invention discloses an energy-saving generator set axial flow channel composite cooling device, which relates to the technical field of cooling devices, and comprises an air cooling mechanism, a plurality of heat dissipation mechanisms, a plurality of control mechanisms, a plurality of connecting pipes, a liquid inlet and a liquid outlet. According to the device, temperature changes are sensed in real time through the memory metal sheet, a three-stage heat dissipation adjusting mechanism is automatically triggered, the heat dissipation requirements of the generator set under low, medium and high working conditions are accurately matched, basic heat dissipation is achieved through single-tube operation at the low temperature, three-tube enhanced heat dissipation is started at the medium temperature, and five-tube full-open maximum power heat dissipation is achieved at the high temperature; a linked cooling liquid flow three-stage adjusting system is matched, so that the heat dissipation efficiency and the temperature change are synchronized in real time, energy waste caused by traditional continuous full-power heat dissipation is reduced, the problem of fatigue cracks of metal parts caused by long-term thermal stress is effectively reduced, the service life of the device is prolonged, and the service life of the device is prolonged. The dilemma problems of supercooling waste and overheating damage of a traditional heat dissipation system are fundamentally solved.

The invention provides a single-row combined tubular solid oxide fuel cell stack structure, which comprises a plurality of single-row modules of a plurality of single-tube batteries, the plurality of single-tube batteries are arranged along the length direction of the single-row modules, and one single-tube battery is arranged in the width direction; a plurality of single-row modules are combined to form an electric pile; each single-row module comprises a supporting part on which each single-tube battery is fixed, and a cathode gas distribution part which is hermetically connected to the supporting part, is correspondingly communicated with the side on which the cathode of each single-tube battery is positioned, and is used for introducing cathode gas to the single-tube battery and discharging cathode tail gas after reaction; and the anode gas distribution part is connected to the supporting part in a sealing manner, is correspondingly communicated with the side where the anode of each single-tube battery is located, and is used for introducing anode gas to the single-tube batteries and discharging reacted anode tail gas. Through the structure provided by the invention, the problems that the gas flow path is complicated and the gas of each single-tube battery is difficult to uniformly distribute when the current multi-tube electric pile is expanded are solved.

The invention discloses a low-pulsation rolling wheel internal rotation parallel multi-pipe peristaltic pump which is characterized in that an extrusion mechanism, a driving mechanism, a rolling wheel rotating mechanism and a pipeline mechanism are arranged on a mounting table plate, the pipeline mechanism comprises an inlet and outlet liquid distribution pipe and a hose, and the liquid distribution pipe is arranged outside the extrusion mechanism in the vertical direction; the hoses are arranged in the extrusion mechanism in parallel at equal intervals in the vertical direction, and the two ends of the hoses are connected with the liquid distribution pipes correspondingly; the roller rotating mechanism is positioned on the inner side of the hose and connected with the driving mechanism; the driving mechanism drives the roller rotating mechanism to rotate and extrude the hoses, the single-pipe-multi-pipe-single-pipe fluid conveying process is achieved, continuous and uniform time differences exist when all the hoses are extruded and loosened, and continuous low-pulse fluid conveying is achieved. The peristaltic pump has the advantages of being low in abrasion loss of the inner wall of the hose and high in continuous filling precision, pulsation during fluid transmission is effectively reduced, and the problems that in an existing peristaltic pump, due to the fact that the inner wall of the hose is seriously abraded, a large number of particles are generated, fluid is polluted, and the continuous filling precision is low are solved.

The utility model discloses a vacuum screw head, relates to the field of drilling of soil layers or rocks, and solves the problem that when a single-pipe drilling tool is pulled out of a drill to extract a rock core, the suction effect in a drill hole reduces the rock core extraction rate. According to the technical scheme, the vacuum screw head comprises a connecting base and a sliding sleeve, the connecting base comprises a connecting shaft provided with a pipe cavity and a base fixed to one end of the connecting shaft, the other end of the connecting shaft is a connector used for being directly or indirectly connected with a drill rod, the connecting shaft is arranged in an inner hole of the sliding sleeve in a penetrating mode, and the sliding sleeve can slide along the connecting shaft. The outer side of the sliding sleeve is provided with an external thread which is used for being directly or indirectly connected with a single-pipe drilling tool. The connecting shaft is further provided with a first through hole and a second through hole, the first through hole and the second through hole are both communicated with a pipe cavity of the connecting shaft, the position of the sliding sleeve on the connecting shaft is automatically controlled through friction force between the sliding sleeve and the hole wall of the drill hole, opening and closing of the first through hole and the second through hole are correspondingly changed, and a flushing fluid conveying channel is correspondingly changed. The utility model can improve the core recovery rate.

The invention relates to the technical field of wire feeding of welding equipment, in particular to a chain type wire feeding hose which comprises a plurality of pipe joints connected in sequence, the pipe joints are provided with through holes, at least one rolling wheel is arranged on the pipe joints in the peripheral direction, one end of each pipe joint is provided with a protruding part, and the other end of each pipe joint is provided with a groove part. The protruding part of one pipe joint is in butt joint with the groove part of the adjacent pipe joint and is hinged to the groove part through a pin shaft. The layout of the rolling wheels on the pipe joints is optimized, so that the length of the single pipe joint can be extremely short, and the manufactured whole hose is extremely good in flexibility and can be bent into a very small curvature radius. The pipe joints which are connected end to end are connected through the pin shafts, enough connecting strength is achieved, the large rotational freedom degree is achieved, and the pipe joints can be used in a self-contained mode under the condition that an outer sleeve is not used. And the structure without using the outer sleeve is open, so that impurities or dust falling from the surface of the welding wire can easily and automatically fall out and is not easy to accumulate inside, and the cleaning and maintenance are convenient. And due to the open structure, the product assembly work can be automated.

The utility model discloses a single-tube pressure test tool for an air cooler tube bundle. The single-tube pressure test tool comprises an end plate; the utility model is characterized in that a first threaded pipe is arranged on the left end face of the end plate, a second threaded pipe communicated with the first threaded pipe is arranged on the right end face of the end plate, a pressing sleeve is fixed on the outer wall of the second threaded pipe through threads, and a sealing ring is arranged between the pressing sleeve and the second threaded pipe. The single-tube pressure test tool for the air cooler tube bundle is simple in structure and convenient to mount and dismount, and the heat exchange tubes are easy to replace; carrying is convenient, a small amount of sampling inspection can be conveniently carried out on heat exchange tubes provided by manufacturers, and cost is saved.

The invention provides a multifunctional heat dissipation system, and relates to the technical field of heat dissipation, and the system comprises a liquid storage module which is used for storing and supplementing a cooling medium for system cooling; the driving module is used for providing a flowing source of a cooling medium in the system, the driving module comprises a plurality of water pumps, and at least two water pumps are arranged in the driving module; the heat exchange module is used for reducing the temperature of the cooling medium passing through the heating source, the heat exchange module comprises a plurality of heat exchangers, and at least two heat exchangers are arranged in the heat exchange module; and the driving module and the heat exchange module are arranged into multiple pipelines which are connected in parallel in a system pipeline. The problems that an existing single pipeline is not high in heat dissipation efficiency, and energy waste is caused by full-load operation in a low-temperature environment are solved, the overall heat dissipation effect of the heat dissipation system is improved through the arrangement of multiple pipelines, meanwhile, the power output of the heat dissipation system can be adjusted through the controller according to temperature conversion, and the heat dissipation efficiency of the heat dissipation system is improved. And therefore, the energy waste is reduced.

The invention belongs to the field of artillery charging design, and particularly relates to a high-density polypropylene module charging packaging barrel which comprises a barrel body (1), a barrel cover (2), an air pressure balance valve (3) and a sealing piece (4). The sizes of cavities in the barrel body (1) and the barrel cover (2) are determined according to the boundary dimension of module charging, the structural design of the packaging barrel is carried out according to the charging weight and use requirements, and structural optimization and improvement are carried out by combining simulation analysis software with a single verification test. Compared with the prior art, the packaging barrel made of the high-density polypropylene material has the advantages that compared with an original metal packaging barrel and an original plastic packaging barrel, the weight of a single barrel is greatly reduced, and the packaging barrel is convenient to carry; the material is soft in texture, can effectively buffer the impact force between the charge and the packaging barrel in the charge transportation process, reduces the charge transportation damage, and ensures the charge ballistic performance; the material is low in cost and easy to foam and form, and the production cost can be reduced.

The invention relates to the technical field of pneumatic testing, and discloses a double-pipeline high-temperature gas aircraft pneumatic valve testing device which comprises an environment testing box. The first air inlet main path is connected with a first inlet of the environment test box after passing through a first pressure regulating device and a first heater in sequence; the second air inlet main path is connected with a second inlet of the environment test box after sequentially passing through a second pressure regulating device and a second heater; one end of the first gas outlet main path is connected with a first outlet of the environment test box; one end of the second gas outlet main path is connected with a second outlet of the environment test box; an air inlet of the first heater is connected with an air outlet of the second heater through a first series pipeline, and an air outlet of the first heater is connected with an air inlet of the second heater through a second series pipeline. The problem that a single-pipeline pneumatic valve test board in the prior art cannot test a double-channel pneumatic valve and the problem that in the pneumatic valve test process, low-pressure and high-low-temperature environment test conditions cannot be combined at the same time can be solved.

The invention relates to a single pipe-lattice hybrid wind power generation tower transfer node and a construction method thereof.The single pipe-lattice hybrid wind power generation tower transfer node comprises a lattice tower section and a single pipe tower drum which are connected through an L-shaped transition section, and the L-shaped transition section comprises a single pipe tower drum connecting piece and a plurality of L-shaped transfer connecting pieces; the L-shaped conversion connecting pieces are evenly distributed on the outer wall of the single-pipe tower barrel connecting piece in the circumferential direction, each L-shaped conversion connecting piece comprises a uniform-section box beam, a variable-section box beam and a steel pipe which are connected in sequence, and each variable-section box beam is of an arch pressing structure. Compared with the prior art, transition between the lattice type tower section and the single-pipe tower section is achieved through the L-shaped transition section, the transportation difficulty is lowered, the field welding workload is reduced, stress concentration is avoided, and smooth transition of rigidity and strength is achieved. The joint is simple in structure, clear in force transmission, convenient and fast to construct and suitable for the conversion requirement of the high-altitude and high-power single tube-lattice hybrid wind power generation steel tower.

The invention relates to a high-integration-power module system composed of plastic package single tubes and capable of expanding wiring. The high-integration-power module system comprises a PCB and at least one plastic package single tube. The plastic package single tube is embedded in the PCB; the surface of the PCB is provided with wiring terminal groups, and the wiring terminals in each wiring terminal group are electrically connected with the corresponding pins in the corresponding plastic package single tube. The power density is high, high voltage and large current can be covered, and multiple dies are connected in parallel; the expansibility is high, and the range of industrial and vehicle gauge power modules can be covered; the cost can be reduced; the integration level is high, and active and passive devices can be integrated; the parasitic stray inductance is very low and can be about 1nH, and the loss can be reduced; meanwhile, the thermal resistance can be further reduced.

The utility model provides an IGBT (Insulated Gate Bipolar Translator) vehicle single-tube power module for optimizing heat dissipation of a chip, which relates to the technical field of power modules and comprises an insulating heat dissipation substrate, a chip unit is arranged in the middle of the insulating heat dissipation substrate; the lead frame is connected with the insulation heat dissipation substrate, the lead frame is provided with a groove structure, and the groove structure is connected with the surface of the chip unit; the insulating heat dissipation substrate, the chip unit and the lead frame are packaged in the shell, and an outer metal layer of the insulating heat dissipation substrate is exposed out of the bottom of the shell. The packaging structure has the beneficial effects that the chip unit with higher heating is arranged in the middle of the insulating ceramic substrate, and double-sided welding is carried out on the chip by using a metal sinking groove structure, so that the packaging power density is improved, and the problem of heat dissipation caused by welding layering at the edge of the outer metal layer can be effectively solved.

The invention belongs to the technical field of power transmission tower welding, and particularly relates to a welding device for a power transmission tower and a method thereof.The welding device for the power transmission tower comprises a lifter, a mounting seat is fixedly mounted on a lifting mechanism of the lifter, and two sliding frames are slidably connected to one side of the mounting seat; c-shaped frames are fixedly connected to the ends, away from the mounting base, of the two sliding frames correspondingly, an annular welding assembly is arranged between the two C-shaped frames, a power transmission tower is arranged on the inner side of the annular welding assembly, the annular welding assembly comprises two upper half-ring rails and two lower half-ring rails, and annular sliding grooves are formed in the upper half-ring rails and the lower half-ring rails correspondingly; two semi-ring rotating gear rings are slidably connected into the annular sliding groove of the upper semi-ring track, two rotating semi-rings are slidably connected into the annular sliding groove of the lower semi-ring track, and the single-pipe power transmission tower welding device further comprises a positioning and pressing unit, a welding gun unit and two clamping and fixing units, and the problem that a single-pipe power transmission tower is inconvenient to weld in the outdoor installation process is solved.

The invention discloses a KMT2A fusion gene detection primer probe group, a kit and a detection method, the primer probe group is specifically designed based on KMT2A gene fusion and 13 common partner genes MLLT3, AFF1, MLLT10, MLLT1, MLLT4, ELL, EPS15, SEPT6, MLLT11, MLLT6, SEPT9, AFF3 and CBL fusion sites, the mutual interference is small, the primer probe group can be used for targeted amplification of a fusion gene specific region in a single-tube mixed solution, the detection sensitivity is high, the detection time is short, the detection time is short, and the detection efficiency is high. According to the present invention, the rapid detection of any one fusion gene type in 67 types can be achieved, and compared with the high-throughput sequencing, the sensitivity is high, the detection rate is high, the single sample detection cost is low, the method is suitable for the clinical auxiliary diagnosis of the large batch of samples, and the guidance is provided for the diagnosis, the treatment and the prognosis of the blood disease patients.

The invention relates to the field of solid oxide fuel cells, and discloses an integrated catalytic combustion reformer and a reforming method. The reformer component comprises two porous partition plates fixedly arranged on the two sides of the inner shell respectively and a plurality of single-tube structures arranged in parallel, and the two ends of each single-tube structure are fixed to preformed holes of the two porous partition plates respectively; a combustion cavity is formed by gaps between all the single-tube structures and the inner shell, the interiors of the single-tube structures are coated with reforming catalysts, and the outer walls of the single-tube structures are evenly coated with combustion catalysts; the combustion cavity is used for combusting and reacting the mixed combustion gas under the action of a combustion catalyst and providing heat for all the single-tube structures; and the internal cavities of all the single-tube structures are used for absorbing heat by mixing the reformed gas and carrying out reforming reaction under the action of the reforming catalyst to obtain hydrogen-rich mixed gas. According to the catalytic combustion reformer and the reforming method, the technical problems that the energy utilization rate is low and the material cost is increased are solved.

The invention relates to the technical field of intelligent pipe networks, in particular to a regional pipe network safety assessment method and system for an intelligent pipe network, and the method comprises the steps: 1, collecting the monitoring data of pipe network monitoring points in a to-be-assessed region according to a preset collection frequency, and obtaining the geographic position data and pipeline burial depth data of the monitoring points from a pipe network database; step 2, judging whether the to-be-evaluated area comprises various pipe networks or not, if so, entering step 4, and otherwise, entering step 3; 3, constructing a safety evaluation network of the single pipe network in the area, and evaluating the safety level of the single pipe network; step 4, constructing a multi-pipe network three-dimensional fusion curved surface under the condition that the to-be-evaluated area contains various pipe networks, and performing safety evaluation on the pipe networks in the area in combination with a projection analysis algorithm; and 5, constructing a fault curve corresponding to each pipe network, analyzing the characteristics of the fault curves, and carrying out safety grade division on the corresponding pipe networks.