13results about How to "Realize active protection" patented technology

The invention discloses a nonmetal composite hydrogen conveying hose with a multi-form hydrogen blocking layer, and belongs to the technical field of hydrogen conveying hoses, the nonmetal composite hydrogen conveying hose comprises an external pipe, the bottom end of the external pipe is connected with a butt-joint pipe, the bottom end of the butt-joint pipe is connected with a composite hose, the bottom end of the butt-joint pipe is connected with a first sleeve in a penetrating mode, and the top end of the butt-joint pipe is connected with a second sleeve in a penetrating mode; the first sleeve is sleeved on the outer wall of the composite hose, the second sleeve is sleeved on the outer wall of the external pipe, a cavity is arranged in the butt-joint pipe, and a sealing measuring assembly is slidably connected in the cavity of the butt-joint pipe. A complete hydrogen conveying structure is integrally formed by a composite hose, a butt joint pipe and an external pipe, the butt joint pipe is fixedly connected with the composite hose and the external pipe in a sleeving mode through a first sleeve and a second sleeve, an inner cavity provides an installation and sliding space for a test sealing assembly, and the composite hose is of a multi-layer composite structure of a hydrogen conveying pipe, a first hydrogen blocking layer and a second hydrogen blocking layer. And a multi-form hydrogen blocking system with double hydrogen blocking layers and a hydrogen transporting base layer is formed.

The utility model discloses an intelligent safety helmet, which belongs to the technical field of protective articles, and comprises a helmet shell and a helmet lining, the helmet lining is arranged in the helmet shell, a neck curtain is arranged at the bottom of the rear side of the helmet shell, the neck curtain is an inflatable neck curtain, a sensing device and an inflating device are arranged between the top of the helmet shell and the helmet lining, and the sensing device can detect the state of a wearer. The induction device can control the inflation device, and the inflation device can inflate the neck curtain. The neck curtain can be stored at the bottom of the rear side of the helmet shell in an uninflated state, and the neck curtain is arranged on the rear side and the two ends of the helmet shell in a surrounding mode in an inflated state. According to the utility model, the sensing device can monitor the angular velocity and the motion state of the head of a wearer in real time, and when an abnormal motion or collision signal is detected, a trigger instruction is sent to the inflation device. In an emergency, the neck curtain is used to rapidly expand, encircle and protect the neck of the wearer.

The utility model discloses a kind of gas leakage detection devices of being convenient for carrying, including detector body, connecting pipe, install the top of detector body, detection probe, install one end of connecting pipe;For achieving the protection mechanism that storage protection is carried out to detection probe, and protection mechanism is arranged at the side of detector body, the utility model is set through the setting of protection mechanism, the active protection of detection probe is realized, when device is in carrying or idle state, protection mechanism can store detection probe in protection structure, effectively avoid detection probe and external object from colliding by physical isolation, to protect its internal precision component from mechanical damage, the setting of protection mechanism is in keeping the portability of device, also significantly improve the durability of detection probe, ensure that detection probe can long-term maintain high detection accuracy and sensitivity, avoid performance attenuation or function failure caused by collision, so as to can prolong its service life.

The invention provides a dynamic energy distribution optimization method and system for a photovoltaic energy storage charging station, is applied to the technical field of power supply and distribution control, and aims at the complexity of multi-source heterogeneous data in a photovoltaic energy storage charging scene and based on an industrial big data analysis technology, and comprises the following steps: collecting multi-source data to construct a variable set, and inputting a model to obtain a supply and demand prediction value; generating an electric quantity flow direction matrix by adopting multi-particle strategy global optimization, generating dynamic boundary verification based on a battery health index, repairing an out-of-limit path by utilizing linear programming, and finally generating a control instruction to drive a power device to execute; according to the method, industrial big data value can be excavated to realize global economy and local safety collaborative optimization of energy distribution, system loss is effectively reduced, the service life of an aged battery is prolonged, control failure caused by sudden working conditions is avoided, and the operation stability and response real-time performance of the micro-grid are improved.

The utility model relates to the technical field of kit, concretely to a kind of ammonia nitrogen reagent is with rapid quantitative kit, including box, support seat, color card, limit frame, protective plate and connecting mechanism, the support seat is set in the box bottom, the support seat is equipped with several, the box top center is equipped with liquid inlet assembly, the box one side bottom is equipped with liquid outlet assembly, the limit frame is set in the box front one side, the box front other side is equipped with observation window, the color card is located in the limit frame interior, the color card top is connected with electromagnet one end, electromagnet other end adsorbs the limit frame inner wall, the protective plate is connected with the limit frame by the connecting mechanism, the connecting mechanism includes sliding slot, fixed block, limit block, bearing, electric push rod and limit plate, the sliding slot is opened in the limit frame inner wall, a kind of ammonia nitrogen reagent is with rapid quantitative kit of the utility model, solve the problem that current equipment protection effect is poorer.

The utility model relates to a closed lateral flow guide belt feeder, including the dust cover of cover conveying belt and the vertical feed pipe of going into dust cover, dust cover is arranged to the opening of one end along the direction of conveying belt progress, the lower end of feed pipe realizes the plugging through sealing bottom plate, and the side wall of feed pipe along the direction of conveying belt progress is opened and has the discharge port on, and the lower end of discharge port and the upper end surface of sealing bottom plate exist the height difference, and the material is discharged along the belt movement direction through the lateral opening, and the impact speed is greatly slowed down, and the generation amount of dust is significantly reduced, and simultaneously, the effect of sealing bottom plate buffer and material accumulation buffer layer avoids direct impact and friction belt, alleviates equipment wear and tear, prolongs the service life of belt, and more through the direct puncture risk of foreign matter of material self -accumulation relief, prevents the occurrence of belt tearing from the source, and the structure gives consideration to the discharge flow smoothness, sealing reliability and maintenance convenience, and the overall environmental protection, safety and economy of system are improved.

The invention provides an anchoring structure intelligent life prolonging method and system based on artificial current field reverse corrosion, and belongs to the technical field of rock mass anchoring protection.The anchoring structure is provided with a power module, a monitoring module and an electrode assembly, and the electrode assembly comprises a negative electrode, a weak positive electrode and a strong positive electrode; through double-anode layout, a weak anode is arranged in a hole to form a loop with a cathode by means of a seepage field, a replaceable strong anode is arranged outside the hole to replace corrosion of the weak anode, and an anchoring structure is used as the cathode for protection; a reverse corrosion system of an artificial current field is formed in an engineering area through the power supply module, a corrosion current field formed by an anchoring structure serving as a positive electrode and underground water in a natural state is broken, and the problem of corrosion caused by chemical action of the anchoring structure and corrosive ions in the underground water is solved; and finally, according to two indexes, namely the corrosion degree of the anchoring structure and the corrosive ion concentration, dynamically feeding back, correcting and regulating and controlling the current to realize intelligent anti-corrosion control so as to prolong the service life of the anchoring structure.

The application discloses a construction method of a suspension bridge space cable AS method, and comprises the following steps: adopting a dead wire and live wire partition arrangement strategy; arranging steel wires in a saddle groove of a cable saddle according to a rule that the dead wires are in the middle and the live wires are on two sides, and arranging the steel wires in a strand shoe according to a rule that the dead wires are on the upper side and the live wires are on the lower side, and arranging the steel wires in a layered manner from the middle to the two sides; setting a sag control cable below a main cable former, controlling catwalk linearity in stages, adjusting the first layer of cable strands for more than or equal to 2 times during construction, and supporting subsequent cable strands by the formed cable strand rigidity; deploying an intelligent control system, integrating a GNSS positioning spinning wheel, a tension sensor and a visual identification module, and monitoring the position and tension of the steel wire in real time, and automatically slowing down or stopping when the steel wire is detected to be out of position or the tension is out of limit. The application significantly improves the construction quality and efficiency of the space cable.

This invention discloses a back EMF detection circuit for a brushless motor controller used in automotive cooling fans, relating to the field of motor technology. Key technical features include a stator with a rotor rotatably connected to its center. A circuit board is mounted on the top of the stator, and a miniature coil is mounted on the circuit board. A lubrication device is rotatably connected to the center of the rotor. The circuit board also integrates a back EMF detection circuit, which includes a signal sampling unit, a filtering and shaping unit, and a comparison and judgment unit connected in sequence. The miniature coil is electrically connected to the output of the back EMF detection circuit. When the comparison and judgment unit detects a back EMF signal indicating that the rotor is in an inertial rotation or driven by airflow, it triggers the miniature coil to operate. This invention accurately identifies recoverable kinetic energy states through the back EMF detection circuit, converting the mechanical energy of wind-driven or inertial rotation into control signals to drive the lubrication, heat dissipation, and dust removal systems in synergy.

The invention relates to the technical field of data centers, and discloses a water supply device of an offshore data center cooling system, which comprises a pump protection pipe, a pipeline assembly and a submersible pump, the lower end of the pump protection pipe extends into seawater, the upper end of the pump protection pipe extends above an ocean platform, the pipeline assembly and the submersible pump are arranged in the pump protection pipe, and the submersible pump is fixedly connected to the lower end of the pipeline assembly. The pipeline assembly comprises a plurality of water pipe units which are connected with one another, the water pipe units can move in the axial direction of the interior of the pump protection pipe, and the water pipe units and the submersible pump can be hoisted out of or hoisted into the pump protection pipe section by section from the position above the ocean platform. Through the modular design, the pipeline assemblies can be flexibly combined according to the water depth, the water pipe units are short in length, the requirement for hoisting equipment is low, maintenance can be completed through conventional tools of the platform, divers are not needed during maintenance, all operations are conducted on the platform, and the difficulty and cost are greatly reduced.

The utility model belongs to the field of samplers, and particularly relates to a silt dam undisturbed soil column sampler which comprises a sampling barrel, a boss is connected to the inner side of an opening in the lower end of the sampling barrel through threads, a cutting edge is integrally formed at the bottom of the boss, and the edge of the upper end of the cutting edge abuts against the bottom of the sampling barrel. The boss is located on the inner side of the edge of the upper end of the cutting edge and used for installing the cutting edge, the outer diameter of the cutting edge is the same as that of the sampling barrel, the inner side of the sampling barrel is slidably connected with a lining pipe, and the lining pipe is a container for directly containing a soil sample. According to the utility model, the negative pressure component consisting of the pull rod, the piston and the spring is arranged in the hollow shell, so that the active protection on the soil sample is realized. During sampling, the pull rod is pulled upwards to enable the piston to generate stable negative pressure in the hollow shell, and the negative pressure acts on the top of the soil column through the bottom through hole to generate upward adsorption force, so that the falling of the soil column caused by dead weight and insufficient friction force with a pipe wall can be counteracted to a certain extent, and the sampling integrity of a sample is ensured.

The invention provides a data protection method and system for a cross-border e-commerce platform, and the method comprises the steps: collecting page front-end data and network communication data in a current session process of a user before a page is completely loaded, obtaining a session embedding vector of the session through a feature extraction mode, carrying out the exception classification based on the session embedding vector, and carrying out the data protection of the cross-border e-commerce platform. Obtaining an abnormal classification result of the current session, obtaining related sessions of the current session when the abnormal classification result of the current session shows abnormality, and integrating the current session and the related sessions thereof to form a dynamic behavior graph for community detection to obtain a group tag and association degree corresponding to the current session; therefore, whether the current session is the crawler behavior is determined, and the recognition precision of the crawler behavior is improved. And if the behavior is the crawler behavior, confusing the commodity prices of all commodities accessed by the current session, and returning a page containing the confused commodity prices to the user, thereby realizing active protection of platform privacy data.

The utility model relates to a kind of battery high voltage distribution box current precision detection system, it includes cabinet, control panel, pull-out operation platform and detection mechanism.Control panel integrates touch screen and operating member, pull-out operation platform is built-in replaceable test tool, its conductive probe and measured distribution box copper sheet elastic contact;Detection mechanism includes programmable ac and dc power supply, electronic load tester, high-precision ammeter, power analyzer, main control host computer and CAN communication module, instrument and test tool are interconnected by serial port and CAN bus and main control host computer respectively.This detection system uses integrated detection equipment of integrated cabinet, through replaceable tool adaptation multiple model distribution box, test parameter closed-loop control is realized in combination with serial port and CAN bus communication, using sensing grating and position proximity switch ensures operation safety, solve the problem that traditional detection system is poor in compatibility, low efficiency and many security risks.