52results about How to "Solve flooding" patented technology

The invention discloses a composite coating for a fuel cell polar plate and a preparation method of the composite coating. The composite coating comprises a conductive corrosion-resistant coating anda hydrophobic material film layer, the conductive corrosion-resistant coating is formed by compounding one or more of metal, metal carbide or carbon materials deposited on the surface of the fuel cellpolar plate; and the hydrophobic coating is a hydrophobic material film layer deposited on the upper surface of the conductive corrosion-resistant coating at the bottom of the runner groove of the reaction area and in the distribution area of the metal polar plate. The composite coating for the metal polar plate of the fuel cell can be maintained in a high-potential and acid environment, and hasthe advantages of complete structure and low possibility of oxidation; and water generated on the surface of the metal polar plate in the using process of the fuel cell stack is rapidly discharged, the durability of the metal polar plate is improved, and the service life is prolonged.

The invention provides a flood control baffle with novel structural design, easy assembly and installation, and convenient manufacture. It includes a longitudinally arranged body, and is arranged at the front and rear of the lower end of the body, and is used to support the front support bottom plate and the rear support of the body. Bottom plate; at least one insertion rod for inserting into the ground is provided under the front support bottom plate and the rear support bottom plate; L-shaped card platforms are respectively provided on the left and right sides of the body, and The card table set on the left side of the body is set in the opposite direction to the card table set on the right side of the body, and at least one perforation is also provided on the protruding side of the card table; one of the two adjacent bodies The card platform on the right side of one body can be matched with the card platform on the left side of the other body. A fixed insert that is fixed together with two bodies.

The invention belongs to the field of fuel cells, and particularly discloses a method for solving the problem of water logging of an oxyhydrogen fuel cell in a closed environment. The method specifically comprises the following steps: calculating a monomer voltage deviation ratio and an average voltage deviation ratio in the fuel cell, judging whether the monomer voltage deviation ratio and the average voltage deviation ratio are both smaller than a pulse voltage drop ratio, if so, judging that the state is normal, and if not, entering the next step; using a buffer tank for replacing a gas supply gas cylinder to supply gas to the fuel cell stack, and if the single voltage or the average voltage is lower than the protection voltage, starting a protection mechanism; when any one of the hydrogen buffer pressure and the oxygen buffer pressure is smaller than the buffer pressure, reusing the gas supply cylinder for supplying gas to the fuel cell, and taking out water in the fuel cell stack through the pressure difference; and repeating the operation until the fuel cell is shut down. According to the invention, the flooding trend of the stack can be early warned, regulation and control time is reserved for fault avoidance, and water is taken out by using driving force generated by pressure difference, so that the flooding problem of the closed fuel cell is solved, and the fuel utilization rate is improved.

The invention relates to a fuel cell gas supply device and a control method thereof. The gas supply device comprises an air compressor, a humidifying unit, a galvanic pile, a first pipeline, a secondpipeline and a third pipeline; the air compressor, the humidifying unit, and the galvanic pile are successively connected; a first bypass and a second bypass are respectively arranged between the first pipeline and the second pipeline and between the first pipeline and the third pipeline; a first flow regulator and a second flow regulator are respectively arranged on the first bypass and the second bypass; and the gas supply device also comprises a control unit, the control unit is used for monitoring the pressure flow of the air compressor and the humidity of the galvanic pile and controllingthe air compressor, the first flow regulator and the second flow regulator. According to the gas supply device, through the integrated pipeline design, the surge problem of the air compressor and thewater logging problem caused by overlarge humidity of the galvanic pile can be solved at the same time, the pipeline design is simple, and the system integration degree is high.

The invention discloses a topological convergence method and service provider edge device (PE) for virtual private local area network service (VPLS). The method comprises the steps as follows: the PE receives a message of canceling a medium access control (MAC) address; the PE analyses the message to obtain an MAC address space identifier; the PE deletes a corresponding MAC address item in the MAC address space corresponding to the MAC address space identifier; and when a received message belongs to the MAC address space identifier, the PE floods the message and relearns the MAC address item. The invention reduces the flooding and relearning of the MAC address.

The invention belongs to the technical field of tertiary oil recovery and particularly relates to a method for conducting deep profile control over a medium-high permeability oil reservoir. The method includes the specific steps that a crosslinked polymer profile control system is injected for preliminary profile control; polymeric microspheres are injected, bridging is conducted in oil reservoir pores, deep profile control is conducted, and the functions of steering liquid flow and expanding the affecting size are achieved; formation water displacement fluid is injected; surfactant washing oil is injected, and normal water injection is conducted. By means of the method, the problem of water logging of an oil well caused by long-term water injection of a water injection well of the medium-high permeability oil reservoir can be effectively solved, blocking of a water channel is achieved so as to solve contradiction of the oil reservoir, a water absorbing profile of the water injection well can be more balanced, the utilization rate of injected water is raised, the waterflooding affecting size is expanded, accordingly the waterflooding development effect is improved, and the recovery efficiency is improved by 10% or above through field tests; therefore, the method can be widely applied to field tests of deep profile control over the medium-high permeability oil reservoir for improving recovery efficiency.

The invention provides a method for predicting a message passing node based on the meeting probability of a target node. A fuzzy similarity matrix is established based on various relationship characteristics of nodes, different attributes of mobile nodes are deeply researched by forming the fuzzy similarity matrix, the social attribute change rule of the mobile nodes is mined, and the weights of the different attributes are dynamically and adaptively distributed. The social relationship and cooperation relationship of the nodes are further quantified. Finally, experiments verify that a good effect is achieved when the encountering model provided by the invention is used for screening the trusted node as the next hop node of data transmission, so that the data is always transmitted along the trusted cooperative node in the network, and meanwhile, the influence of malicious node non-cooperation on the performance of the network is reduced.

The invention discloses a submerged aquatic plant culture planting and harvesting generating device. The submerged aquatic plant culture planting and harvesting generating device comprises a submergedplant planting layer, a submerged plant cutting layer, a cylinder power plant, a submerged plant substrate layer, a telescopic automatic popup bracket and inflatable leather bags; the submerged plantplanting layer is arranged on the top of the device, and countless submerged plant planting grooves are uniformly distributed in the submerged plant planting layer; the submerged plant cutting layeris arranged below the submerged plant planting layer, and a plurality of cutting hole grooves are uniformly distributed in the submerged plant cutting layer; the cutting hole grooves are overlapped with the submerged plant planting grooves; the cylinder power plant is mounted on the outer side of the submerged plant planting layer, and is connected with the submerged plant cutting layer through aconnecting rod; the submerged plant substrate layer is arranged at the bottom of the device, and is used for placing planting substrates; the telescopic automatic popup bracket is connected with the submerged plant planting layer and the submerged plant substrate layer; the inflatable leather bags are mounted on both ends of the submerged plant planting layer, and are stored in protective shells.

The invention relates to a novel deratization device consisting of a cage and a sliding door, wherein the sliding door is arranged on one lateral of the cage, the sliding door is installed on entrance, a seesaw is disposed in the entrance, a triangular fulcrum is arranged in center portion of the seesaw, bottom portion of the triangular fulcrum is disposed on bottom floor of the cage, a control hook connected to other end of the seesaw is coupled to a pull line, the pull line passes through a pulley and is connected to a sliding pole, and the sliding pole is connected to a groove on the sliding door. According to the novel deratization device, problem of mouse flooding in daily life is solved without use of energy or springs, resulting in no other potential security risks, besides, an auxiliary function can be simultaneously achieved on the realization of basic function, and brings good experiences for users which is safe and environment friendly.

The invention provides a gold smelting wastewater treatment technology, and aims at the problems of high treatment cost and low wastewater reuse rate of acid wastewater and high-concentration cyanide-containing wastewater generated in the gold smelting process. A solar water evaporation device is constructed, smelting wastewater is evaporated in an interface heating mode, steam is condensed and collected, and then the purpose of water treatment is achieved. According to the invention, cheap and easily available green alga is used as a raw material and is molded by crushing, suction filtrationand other methods, and is further carbonized to obtain the porous structure biomass charcoal material, which can efficiently absorb full-spectrum sunlight and convert the sunlight into heat energy, sothat the product has excellent solar water evaporation performance, and can stably exist in acidic and alkaline environments. Therefore, the method has a good application prospect in the field of gold smelting wastewater treatment.

The invention discloses a method for cucumber planting by straw biological fermentation and belongs to the technical field of cucumber planting. The method for cucumber planting by straw biological fermentation comprises the steps of seed selection, seedling culturing, field selection, soil preparation, preparation before planting, planting, film covering and managing and harvesting after planting. The method is characterized in that the preparation before planting comprises the following steps that ditching is carried out at a position of a planting row; then straw which is subjected to fermentation treatment is arranged in a ditch in a paving mode, and evening and solid paving is carried out; beneficial microorganism flora is evenly dispersed on the straw, then vaccines are dispersed on the straw, a shovel is used for clapping and vibrating for one time, soil which is pulled out is arranged on the straw in a backfilling mode, watering is carried out, the straw is drenched, after 2-3 days, leveling and ridging are carried out, and the soil layer thickness on the straw is kept being 15 cm; and finally vent holes are punched in a soil layer. According to the method, a reasonable and effective path is provided for straw processing, the chemical fertilizer applying quantity can be reduced, planting cost is lowered, and the quality and the yield of cucumbers are improved.

The invention discloses a variable vibration fuel cell water management system and a control method thereof. The system comprises a variable vibration device and a fuzzy controller, the variable vibration device comprises a plurality of spring lifting tables with electric damping springs, a vibrator lifting table with a vibrator and a placement seat located above the spring lifting tables and the vibrator lifting table, a fuel cell stack is positioned and installed on the placement seat through a positioning piece, the electric damping springs are connected with the fuzzy controller through a damping spring control wire harness, the vibrator is also connected with the fuzzy controller through a vibrator control wire harness, and the fuzzy controller can control the vibrator to vibrate and enable the fuel cell stack to ascend and descend by controlling the electric damping spring to act. The system has the beneficial effects that: the structural design is ingenious, the control method is reasonable, the problem of water logging in the fuel cell stack caused by vibration of the fuel cell under the complex road condition is effectively solved, the vibration stability of the fuel cell under the complex road condition is ensured, and the performance of the fuel cell is also improved.

The invention belongs to the field of crop fertilizers, and particularly relates to a green ecological potash fertilizer and a preparation method thereof. The green ecological potash fertilizer is mainly prepared from a potash fertilizer, water hyacinth, phosphate ore and an active conditioner, and prepared by the following steps: firstly removing heavy metals from the water hyacinth, and then mixing the processed water hyacinth with the potash fertilizer and the active conditioner. According to the green ecological potash fertilizer, the water hyacinth is used as a main organic matter, so that the leaching loss of the potash fertilizer in the soil can be avoided, meanwhile, the soil is improved, soil hardening is reduced, the organic matter in the soil is increased, the microbial activity is improved, and the stress resistance and the disease resistance of the crops are improved; while the potash fertilizer is provided, the water hyacinth which has a certain negative effect on the environment is reasonably utilized, so that the environment burden can be reduced; the green ecological potash fertilizer is an environment-friendly ecological fertilizer which is safe and non-toxic to people and livestock, and environment-friendly.

The invention relates to an ecological algae-removing chelydra serpentina aquaculture box capable of removing impurities automatically, and belongs to the technical field of aquaculture. The ecological algae-removing chelydra serpentina aquaculture box capable of removing impurities automatically comprises an outer aquaculture box, an inner grid partition layer, an inner grid partition layer gate,an inner grid partition layer gate hoisting assembly, a water inlet solenoid valve, a water outlet solenoid valve, a water level sensor and a nitrifying bacteria filter box. The impurity cleaning problems that in aquaculture of chelydra serpentina, green algae are inundant, and nitrifying bacteria cannot be decomposed are solved.

The embodiment of the invention provides a network topology collection method and a network topology collection device. The method comprises the following steps: respectively sending a first detectionsignal to an Nth hop terminal device and an N hop relay device; receiving a first response message fed back by the Nth hop terminal device and a second response message fed back by the Nth hop relay device, when the equipment information of the (N + 1) hop of terminal equipment and the equipment information of the (N + 1) hop of relay equipment which are different from the obtainedprevious N hop of terminal equipment and previous N hop of relay equipment are obtained according to the first link information, respectively sending a second detection signal to the (N + 1) hopof terminal equipment and the (N + 1) hop of relay equipment; and when the device information of the terminal device and the device information of the relay device different from the obtained first N-hop terminal device and the obtained first N-hop relay device are not obtained according to the first link information, generating a network topology according to received response messages fed back by the first N-hop terminal device and the first N-hop relay device.

The invention relates to the technical field of metal smelting, in particular to an aluminum ash treatment method. According to the method, recycled aluminum materials and the content of fluorine elements in final waste can be significantly reduced, and the content of aluminum in the recycled materials is improved. The main process steps comprise that S1: crushed water hyacinth powder is used as acarbon source to cultivate streptococcus mutans; S2: aluminum ash is poured into a cultivation pool containing a large number of streptococcus mutans and stirred evenly, and the streptococcus mutansis used for treating the aluminum ash; S3: the treated aluminum ash is taken out, drained off and put into a rotary furnace for ash separation operation; S4: aluminum water in the rotary furnace is poured out, and intermediate aluminum particles are added into the rotary furnace and stirred uniformly; S5: the aluminum water is poured out again and cooled to obtain slag ingots; S6: the retaining ash slag in the rotary furnace is transferred into an ash cooling barrel for cooling; S7: a ball mill in the ash cooling barrel is opened; and S8: a magnetic separator is opened, and materials in the ash cooling barrel are classified and collected according to fine ash, the intermediate aluminum particles and large pieces of aluminum slag.

The invention discloses a message processing method and device, a computer storage medium and terminal equipment. The message processing method is executed separately by each device in a network. Themessage processing method comprises the following steps: when a broadcast message or a multicast message sent by other devices in the network is received by at least two uplink interfaces of the device, one uplink interface in the at least two uplink interfaces of the device is set as an available interface, and the other uplink interfaces of the device is set as unavailable interfaces; wherein all downlink interfaces of the device are set as available interfaces in advance; when the broadcast message or the multicast message is received through the available interface, the received broadcastmessage or multicast message is forwarded; and when the broadcast message or the multicast message is received through the unavailable interface, the received broadcast message or multicast message isdiscarded. By means of the invention, the flooding problem of the broadcast and multicast can be solved; the occupation of system resources can be reduced; and the forwarding efficiency of the messages can be improved.