20results about How to "Avoid leakage hazards" patented technology

This application relates to the field of power equipment technology, specifically to an intelligent high-protection low-voltage control box, including a box body, an outer door panel, and an inner door panel. The box body has a door frame, the inner door panel is hinged to the inner side of the door frame, and the outer door panel is hinged to the outer side of the door frame. The outer door panel is provided with a door lock assembly to lock the outer door panel to the door frame. The inner side of the outer door panel has at least one ring of foam strip corresponding to the door frame for sealing the outer door panel and the box body. The door lock assembly passes through the outer door panel, and a sealing structure is provided between the two. The box body contains an intelligent monitoring and protection module for protecting and controlling power equipment. The box body is provided with a connector assembly for connecting and disconnecting cables. This application solves the problems of low protection level and poor sealing performance of existing intelligent low-voltage control boxes.

The utility model discloses a spot-welding-free over-current support which comprises a support body and an installation mechanism, the surface of the support body is coated with an anti-corrosion coating, the outer wall of the support body is provided with a fixing block, the inner wall of the fixing block is provided with a fixing rod, the inner wall of the support body is provided with crimping grooves, and the crimping grooves are connected with the installation mechanism. The mounting mechanism is crimped on the inner wall of the crimping groove, the mounting mechanism comprises a crimping block, a cable rack, a cable hole and an insulating sleeve, and the crimping block is crimped on the inner wall of the crimping groove. According to the spot-welding-free over-current support, through the arrangement of the mounting mechanism, when the spot-welding-free over-current support is used, an insulation effect can be achieved through an insulation sleeve in a cable hole in the mounting mechanism when an over-current phenomenon occurs to a cable, the risk of electric leakage is avoided, and therefore the safety is improved, and the service life of the spot-welding-free over-current support is prolonged. And meanwhile, the cable rack is crimped and spliced with the crimping groove in the bracket body through the crimping block, welding installation is not needed, and splicing is convenient.

The process of top-down construction of basement outer wall after construction of horizontal bracing structure by reverse construction method, sequentially constructs the horizontal bracing structure from top to bottom, simultaneously pours the guide wall of the basement outer wall during the construction of each layer of horizontal bracing structure, and pre-buries the steel sleeve in the guide wall for pouring the outer wall, specifically comprising the following steps: S1, construction of surrounding purlin; S2, horizontal bracing structure formwork; S3, pouring the first horizontal bracing structure; S4, sequentially constructing the lower horizontal bracing structure; S5, construction of outer wall formwork; S6, pouring of outer wall concrete; the application replaces the traditional "horn mouth" as the pouring and vibrating channel of the outer wall concrete by reserving the guide wall and steel sleeve in advance, ensures that the outer wall is poured to the top at one time, avoids the narrow space of the "horn mouth" from causing the new and old concrete contact part to be not vibrated in place, and causes the leakage hidden danger of honeycomb and dog hole of the old concrete.

The utility model discloses a photovoltaic support installation structure of an ALC roof. The photovoltaic support installation structure comprises a base, a C-shaped purline, a purline support and an M-shaped water guide groove. The C-shaped purlin is installed on the ALC roof through a plurality of bases arranged at the lower end of one side face, the C-shaped purlin and the bases are fixedly connected through purlin supports, two first bolts are arranged at the upper ends of the bases, two deformed steel bars are arranged at the lower ends of the bases, and the deformed steel bars and the ALC roof are connected through punching and are fixedly installed in cooperation with glue; the C-shaped purlines are arranged in parallel, the M-shaped water guiding grooves are transversely formed between the C-shaped purlines, the edges of the two sides of the photovoltaic module are erected on the M-shaped water guiding grooves in the two sides respectively, and rainwater on the surface of the photovoltaic module is drained outwards through the M-shaped water guiding grooves. A light roof photovoltaic anchoring, guiding and draining integrated system is constructed, and the problems that an ALC roof is weak in bearing capacity and poor in waterproof performance are solved through collaborative design of embedded steel bar anchoring and a water guiding sealing structure.

The present application belongs to the technical field of water pump, and relates to a pump capable of increasing flow and pressure, comprising a pump body, a water inlet and a water outlet arranged on the pump body, an impeller and a water outlet cover arranged in the pump body and used for guiding pressurized fluid to the pump cavity, the water inlet and the inlet of the impeller being communicated through a flow channel body, the flow channel body comprising a throat pipe and a nozzle, the water outlet and the nozzle being respectively communicated with the pump cavity, the outer side of the nozzle being provided with a conversion turbine driven by a power device in two directions, the water pump being in a flow-increasing mode and a pressure-increasing mode respectively when the conversion turbine rotates in different directions, the conversion turbine driving fluid to flow in the opposite direction of the nozzle in the flow-increasing mode, and the conversion turbine driving fluid to flow in the direction of the nozzle in the pressure-increasing mode. The pump capable of increasing flow and pressure can select a high-flow mode or a high-lift mode according to actual requirements.

The invention discloses a control method and system for waterproof well lid production, and aims to solve the problems that in traditional production, the forming precision of a sealing surface microstructure is insufficient, the assembly gap of a waterproof rubber strip is out of tolerance, and the traditional production only controls the macroscopic size and ignores the sealing surface micro-texture defects (such as sink marks and air holes) caused by material flowing. And the rubber strip is assembled without pre-pressing adaptive control, so that a gap of 0.1-0.3 mm is easy to appear, and leakage is caused. According to the system, a'sealing surface microstructure-adhesive tape pre-pressing cooperative adaptive control module 'is innovatively designed, and gapless attachment of a sealing surface and an adhesive tape is achieved through microstructure forming dynamic compensation and adhesive tape pre-pressing amount accurate matching; and meanwhile, a multi-source micro-sensing acquisition module, an intelligent mould pressing execution module, a micro-gap detection module and a full-process data tracing module are combined to form a precise production control system. The size deviation of the microstructure of the sealing face is smaller than or equal to + / -0.02 mm, the assembly gap of the rubber strip is smaller than or equal to 0.03 mm, the waterproof qualification rate is increased, and the method is suitable for high-precision production of the waterproof well lid made of the polymer composite material.

The invention belongs to the technical field of heat dissipation, and particularly relates to an air-cooled phase-change radiator which comprises a shell and a radiator body, a cavity is formed in the shell, the radiator body is arranged in the cavity and is formed by arranging a plurality of first cooling fins and a plurality of second cooling fins at intervals, and a plurality of first gas channels and a plurality of second gas channels are formed. The phase change assembly is arranged in the cavity and arranged on the lower portion of the radiator body, the phase change assembly comprises a plurality of phase change units, a bottom shell and an upper plate, the bottom shell and the upper plate are arranged at the two ends of the phase change units, a phase change cavity is formed between the upper plate and the bottom shell, each phase change unit correspondingly communicates with the corresponding second gas channel, and a plurality of heat conduction channels in a vacuum state are formed; the bottom shell is used for making contact with a heating source, a working medium is packaged in the phase change unit, and heat of the bottom shell can be efficiently conducted into the heat conduction channel to conduct heat exchange with gas in the first gas channel through phase change circulation of the working medium.

The utility model provides a kind of quick assembly type river flood prevention retaining wall, it is related to flood prevention device technical field, including mounting column, first flood prevention wall and second flood prevention wall, the side surface of first flood prevention wall is equipped with guide slot, the inside of guide slot is equipped with tooth slot, using guide block, trapezoidal block, reinforcing plate, first fixed pin and second fixed pin, guide block is installed along guide slot, ensure that first flood prevention wall and second flood prevention wall are quickly aligned when splicing, prevent misplacement, the tooth slot set in guide slot and the tooth block of guide block side surface are accurately engaged, not only realize positioning, also enhance shear resistance, simultaneously, trapezoidal block and trapezoidal groove constitute sealing step, adopt the labyrinth-like bending design, further strengthen sealing effect, effectively prevent the leakage hidden danger of assembly gap, in addition, reinforcing plate is inserted into the insertion slot in fixed groove by plug-in block, block assembly gap and improve overall waterproof performance, significantly enhance the impact strength of connecting part, effectively resist deformation or collapse risk under flood pressure.

The application provides a rolling brush motor and a ground brush assembly. The rolling brush motor comprises a stator, a rotor shell and a fixed shaft led out from the stator and the rotor shell; the stator is fixed on the fixed shaft; the rotor shell is rotatably sleeved on the stator and is configured to drive the rolling brush of the cleaning device to rotate; a wire channel is arranged in the first end of the fixed shaft to lead the lead wire of the stator out of the rotor shell; and the material of the fixed shaft is engineering plastic. The fixed shaft is made of engineering plastic to form the wire channel in the fixed shaft, realize internal wiring, enhance waterproof reliability, reduce the entry of water vapor into the rotor shell from the assembly position of the bearing and the fixed shaft, stably assemble the uniform outer surface of the fixed shaft and the inner ring of the bearing to reduce shaking, and avoid the need for more installation fixing structures and space for additional wiring.

The utility model discloses a wireless power supply variable pitch propeller system and an unmanned aerial vehicle, and relates to the technical field of unmanned aerial vehicle electromechanical equipment, the wireless power supply variable pitch propeller system comprises a wireless power supply variable pitch propeller, a gear reduction box and an engine which are connected in series, the wireless power supply variable pitch propeller is composed of a rotor, a stator and a variable pitch propeller module, and the variable pitch propeller module is fixedly connected with the rotor. And the stator is fixedly connected with the gear reducer. According to the utility model, non-contact energy supply is realized through a magnet exciting coil mutual inductance principle, and carbon brush abrasion and electric arc risks of slip ring power supply are thoroughly eliminated; compared with a hydraulic variable-pitch complex pipeline system, mechanical parts are reduced through wireless power supply, millisecond-level dynamic response is achieved in combination with closed-loop control of an unmanned aerial vehicle flight control computer, and meanwhile the hidden danger of hydraulic oil leakage is avoided; compared with the limitation of a mechanical variable-pitch rigid connecting rod mechanism, the modular design supports the synchronous control of a plurality of receiving units, realizes breakthrough in the three dimensions of reliability and maintenance cost, and is particularly suitable for the high-efficiency requirement in a high-speed rotating scene.

A PSP steel-plastic composite pipe with end reinforcement effectively solves the problem of poor connection applicability of existing PSP steel-plastic composite pipes. It includes a pipe body with a bend at the end formed by a flaring and bending process. The bending angle of the bend is 60° to 90°. The outer surface of the bend is covered with an injection-molded plastic flange reinforcement joint. The end face of the plastic flange reinforcement joint is a heat-fusion connection surface for heat-fusion butt welding with the plastic flange reinforcement joints of adjacent pipes. This structure is simple, novel in design, convenient to use, and highly practical.

This invention discloses a method for synthesizing (1S,4R)-4-amino-2-cyclopentene-1-carboxylic acid methyl tartrate and its analytical method. The synthesis method includes the following steps: using methanol as the reaction medium, (±)-2-azabicyclo[2.2.1]hept-5-en-3-one reacts with an acylation reagent to obtain cis-4-amino-2-cyclopentene-1-carboxylic acid methyl tartrate hydrochloride; using methanol solution as the reaction medium, cis-4-amino-2-cyclopentene-1-carboxylic acid methyl tartrate hydrochloride is mixed with a resolving agent for resolution, followed by crystallization to obtain the target product (1S,4R)-4-amino-2-cyclopentene-1-carboxylic acid methyl tartrate. The method of this invention is more environmentally friendly, effectively solves the hidden danger of hydrogen chloride leakage, and optimizes the amount of tartaric acid by the solubility difference between the tartrate salts of (1S,4R) and (1R,4S) chiral enantiomers. A specific reversed-phase chiral chromatography method is used to detect the chiral purity of the product.

The invention discloses a device, configuration and storage method of a hydrogen standard oil sample for transformer oil chromatography verification, and relates to the technical field of electrical equipment state monitoring and fault diagnosis, the device comprises a standard oil configuration and storage unit, an outer layer protection unit, an inert gas supply and pressure compensation unit, a hydrogen concentration online monitoring unit and a control unit. The standard oil configuration and storage unit is a stainless steel tank body of which the inner wall is plated with a compact silicon oxide coating, so that hydrogen escape is effectively prevented; the outer-layer protection unit covers the inner tank and forms an inert gas interlayer, and the stable pressure difference between the outer-layer protection unit and the inner tank is maintained through dynamic pressure compensation; the hydrogen concentration monitoring probe monitors the hydrogen concentration in oil in real time, and the control unit automatically adjusts the interlayer pressure or the stirring speed according to data and actively maintains dissolution balance. Through the synergistic effect of the high-barrier material, dynamic pressure compensation and intelligent closed-loop control, the technical problems that hydrogen is easy to permeate and the concentration is easy to attenuate are solved, and the method can be used for on-site calibration of the transformer oil chromatography online monitoring device.

The application belongs to the technical field of sodium hexafluorophosphate and particularly relates to a one-pot preparation process of sodium hexafluorophosphate. The one-pot preparation process of sodium hexafluorophosphate comprises the following steps: (1) reaction: anhydrous hydrogen fluoride is put into a reactor, a sodium source and a phosphorus source are sequentially added at a temperature of -60 to -20 DEG C, then the temperature is increased to 0 to 10 DEG C for reaction, volatile substances are evaporated after the reaction is completed, and a sodium hexafluorophosphate primary product is obtained; (2) neutralization: an organic solvent is added to the sodium hexafluorophosphate primary product for dissolution, then an alkaline substance is added to adjust the pH value of the solution system to 7 to 9, filtration is performed, a sodium hexafluorophosphate solution is obtained, the organic solvent is evaporated by increasing the temperature, and a sodium hexafluorophosphate crude product is obtained after drying. The one-pot preparation process has the advantages of mild conditions, simple operation, fast reaction rate, easy separation of the product, high purity and high yield of the prepared sodium hexafluorophosphate crude product, and is suitable for industrial production.

This invention discloses a seepage-proof structure for basement waterproofing projects, relating to the field of building waterproofing technology. It includes a foundation wall, a first waterproof layer, a second waterproof layer, a third waterproof layer, a drainage system, and a reinforcement system. The first waterproof layer is located on the outer surface of the foundation wall and comprises, from bottom to top, a base treatment layer, a cement-based penetrating crystalline waterproof coating, a reinforcing layer, and a first sealing layer, forming a basic waterproof defense line and enhancing waterproofing reliability. This invention utilizes the synergistic effect of the three waterproof layers to form a redundant protection mechanism, constructing a multi-layered waterproof defense line from the inside out. This significantly improves the reliability and durability of the waterproofing system, effectively resisting corrosion from chemicals in groundwater and extending the service life of the waterproof layers. Dedicated fixing and sealing devices are used between each waterproof layer to eliminate the risk of leakage at joints, solving the problems of poor overlap and weak adhesion to the substrate in traditional flexible waterproof membranes.

This invention relates to the field of tunnel construction technology, and discloses a novel tunnel anchor grouting device, comprising a grouting tank body, a first partition plate on the inner wall of the grouting tank body, a second partition plate below the first partition plate, and a third partition plate below the second partition plate. The first partition plate and the top surface of the inner cavity of the grouting tank body form a piston chamber. The device drives a connecting rod via a piston rod, which in turn drives a wheel via a fixing screw. The wheel drives a wheel shaft to rotate, which in turn drives a drive gear. The drive gear drives a meshing driven gear, which in turn drives a stirring rod. The stirring rod then rapidly agitates the concrete raw materials and water. This transmission eliminates the need for a motor, reducing construction electricity consumption and preventing electrical leakage hazards in seeping tunnels, thus greatly improving the safety of the construction site.

The utility model relates to a low torque, anti -leakage's valve, include: first valve body, second valve body is equipped with the fluid passageway that penetrates to the inside of first valve body, valve core is used for opening or cutting off fluid passageway, and the inner diameter of through -hole that is equipped with penetrates on valve core is same with the inner diameter of fluid passageway, valve rod is connected with valve core in one end, sealing ring is provided as at least one, and sealing ring is sleeved on the outer wall of valve rod, and sealing ring is used for sealing between valve rod and valve cover, and the material of sealing ring is perfluorinated ether rubber. The low torque, anti -leakage's valve of the utility model effectively reduces the valve failure and handle deformation problem caused by excessive torque, prolongs the service life of valve, reduces equipment maintenance cost, improves production efficiency, adopts perfluorinated ether and high fluorine O -ring material and integral type ball valve body, solves the shaft end external leakage and structural leakage hidden danger thoroughly, avoids crystallization material blockage problem, guarantees module cleanliness, improves production safety.

This invention discloses a manufacturing system and operating method for a fire extinguishing device, belonging to the field of fire extinguishing device manufacturing technology. It includes: a processing table; a turntable mechanism fixedly connected to the processing table; a barrel feeding mechanism for feeding the tank body fixedly connected to the processing table; a cover feeding mechanism for feeding the top cover fixedly connected to the other side of the turntable mechanism; a pressing mechanism adapted to the cover feeding mechanism fixedly connected to the processing table; a welding mechanism fixedly connected to one side of the turntable mechanism; an eddy current detection mechanism fixedly connected to the welding mechanism; and a discharge mechanism fixedly connected to one side of the welding mechanism. This invention not only achieves automated manufacturing of the fire extinguishing device but also significantly improves the product's assembly accuracy, sealing quality, and testing reliability through key technologies such as flexible pressing, laser sealing, and online flaw detection.

This invention provides a large-scale model interaction privacy protection system based on semantic understanding, relating to the field of interaction privacy protection technology. It includes: a context semantic management module, a dynamic privacy risk assessment module, an adaptive privacy protection module, and a large-scale model interaction adaptation module. This invention can collect multi-turn dialogues in real time, store semantic information hierarchically, distinguish and isolate privacy semantics from general semantics, and perform real-time privacy risk level assessments on user input, model output, and context. Based on the risk level, it automatically selects protection strategies such as desensitization, differential privacy noise addition, masking, or replacement. It generates responses based on the protected text and performs secondary verification of the output to ensure no privacy leakage, thus improving the reliability of large-scale model interaction privacy protection.

The utility model discloses a sealing device for preventing leakage of a graphitized electrode cooling hole, and relates to the technical field of graphitized electrodes. The problems that the volume density of an existing graphite electrode does not reach the standard in the dipping and roasting treatment process, electrode cooling water leakage hidden danger exists, and the service life of the graphite electrode is affected are solved. According to the sealing device provided by the invention, the resin adhesive is uniformly pressed between the outer surface of the cooling water pipe and the inner wall of the cooling water hole in the graphite electrode through pressure, and the cooling water pipe and the cooling water hole in the graphite electrode are sealed by drying the resin adhesive; two treatment processes of dipping and roasting the graphite electrode in the prior art are actually replaced, so that the volume density of the graphite electrode is ensured, the cooling water pipe is mounted in the cooling water hole in the graphite electrode, and the outer surface of the cooling water pipe and the inner wall of the cooling water hole of the electrode are sealed through the resin adhesive, so that the cooling effect is improved. The hidden danger of leakage of electrode cooling water is avoided, and the service life of the graphite electrode is prolonged. The graphite electrode is suitable for the field of graphite electrodes.