30results about How to "No flooding" patented technology

The invention relates to a catalytic electrode of a proton exchange membrane fuel cell, a cell provided with the same and a preparation method thereof. The catalytic electrode comprises a conductive carrier layer with a net-shaped structure, and a proton conductive monomer and a catalyst which are located on the surface of the conductive carrier layer and in the net-shaped structure; the thickness of the conductive carrier layer is 1-10 microns; the cell provided with the catalytic electrode adopts the catalytic electrode to replace a cathode catalyst layer; the preparation method comprises the following steps of: S1, manufacturing the conductive carrier layer; S2, supporting a catalyst; S3, supporting the proton conductive monomer; and S4, transferring the conductive carrier layer. Almost catalysts, the proton conductive monomer and a pore can form an effective three-phase interface and the utilization efficiency of the catalyst is greatly improved; a water flooding phenomenon caused by the fact that the thickness smaller than 1 micron does not occur and a phenomenon that the conductive property is decreased, caused by the fact that the thickness is more than 10 microns also does not occur; the fuel cell adopting the catalyst can keep relatively long service life in a frequent starting-stopping automobile application environment.

The invention discloses a particle dispensing device for PIV based internal flow field measurement of a ventilated cavity. A cavitator in the dispensing device includes an enclosed casing, ventilation holes are formed in the lateral side of the cativator, an air inlet pipe connected to the cativator is communicated with an internal cavity, the internal of the cativator includes a particle caching pipe, the lateral side of the particle caching pipe also includes ventilation holes, an air inlet connecting piece connected to the particle caching pipe is communicated with the cavity, the cavity is formed between the external surface of the particle caching pipe and the internal surface of the cativator, an external pipeline is connected with a particle storage pipe, particles are supplemented timely via two control valves and an air source, and thus, the particles can be dispensed continuously and uniformly. The particle dispensing device can be used for researches on ventilation cavitation of different appearances, and provides convenience for measurement and application of a PIV system.

The invention relates to a pull-up circuit for an IO circuit, which comprises an access control module, a pull-up module and a switch module, wherein the access control module and the pull-up module are connected in series between an IO port and an IO power supply; the switch module generates an access control signal according to an IO port signal and a first interface signal; when the IO port isinput or floated, the voltage value of the IO port signal is equal to the voltage value of the first interface signal; the access control signal is larger than or equal to a difference value between the IO port signal and a preset threshold voltage; an access control module is cut off or conducted under the control of the access control signal and a second interface signal; and the voltage value of the second interface signal is equal to the larger one of the voltage value of the IO power supply and the voltage value of the IO port signal. According to the technical scheme, when the voltage value of the IO port signal is larger than the voltage value of the IO power supply, current can be effectively prevented from flowing backwards from the IO port to the IO power supply; and when the IOport is floated, the requirement that the potential at the IO port can be pulled up to always be larger than the minimum value of the IO logic output high voltage is met.

The invention discloses an efficient chemical deodorization device and method. The device comprises: an absorption liquid storage tank, wherein a reaction pipe is connected to a gas inlet of the absorption liquid storage tank, and a demister connected to a gas outlet of the absorption liquid storage tank; a liquid spraying pipe, wherein the lower end of the liquid spraying pipe is connected with the reaction pipe, and an external fan connected with the upper end of the liquid spraying pipe; and a circulation mechanism, wherein the extraction end of the circulation mechanism is connected with the liquid outlet of the absorption liquid storage tank, and the discharge end of the circulating mechanism is connected with the liquid spraying pipe. According to the efficient chemical deodorization device, a gas-liquid co-flow chemical technology is adopted; and the device is large in treatment capacity, small in pressure drop, free of a flooding phenomenon, and capable of remarkably reducing a tower diameter and a tower height and decreasing the investment cost of the device.

The invention relates to a hemofiltration sample pad. According to a preparation mode, a certain proportion of human erythrocyte antibodies, trihydroxymethyl aminomethane, casein, polyvinylpyrrolidone, surfactants and the like are prepared into a treatment solution according to different product properties in accordance with different sequences; the prepared solution is subjected to pH regulation so as to form a final treatment solution; the prepared treatment solution is uniformly processed on glass fiber and is put into a 37-DEG C drying box to be dried for 8 to 24 hours. The hemofiltration sample pad prepared by the method has the advantages that the whole blood sample is separated under the condition of not influencing the sample running board; a fast diagnosis reagent subjected to sample feeding has clean background without phenomena such as blood residue traces, flooding, line whitening or rail lines.

The present invention relates to methods and arrangements for locating services in a structured peer-to-peer distributed hash table, DHT, based, overlay communication network (310). The invention comprises two inter-related methods and nodes. The first method is used by a service node (321) to "advertise" to the overlay network (310) that it is providing a particular service (S1). This is done by distributing instances (351,352,353) of a service object (O1) that are stored in different nodes (331,332,333) in the overlay network (310) and where the instances (351,352,353) comprise an address to the service node (321). The other method is to locate at least one of these instances (351,352,353) with a predetermined probability and with a predetermined number of location request messages (390) from a user node (311) wishing to use the particular service (S1).

A novel efficient parallel-flow-impacting wet dedusting tower is provided. A dedusting device comprises a tower body, cyclone mixers, a gas feeding pipe, a water feeding pipe, liquid distributers, a water discharging pipe, a demister, a circulating pump, connecting pipelines, and the like. Gas and washing water pass through the cyclone mixers in a parallel flow manner at the same direction. The gas and the washing water are fully mixed and impact. Washed dust is discharged from the tower bottom. Clean gas enters the demister to separate entrained mist droplets and is finally discharged from a gas discharging port. The wet dedusting tower has characteristics of good dedusting effects, small systemic resistance, no flooding, small tower size and little water using amount, and can be used for washing and cleaning processes of various kinds of dust-containing gas.

The invention relates to a catalytic electrode of a proton exchange membrane fuel cell, a cell provided with the same and a preparation method thereof. The catalytic electrode comprises a conductive carrier layer with a net-shaped structure, and a proton conductive monomer and a catalyst which are located on the surface of the conductive carrier layer and in the net-shaped structure; the thickness of the conductive carrier layer is 1-10 microns; the cell provided with the catalytic electrode adopts the catalytic electrode to replace a cathode catalyst layer; the preparation method comprises the following steps of: S1, manufacturing the conductive carrier layer; S2, supporting a catalyst; S3, supporting the proton conductive monomer; and S4, transferring the conductive carrier layer. Almost catalysts, the proton conductive monomer and a pore can form an effective three-phase interface and the utilization efficiency of the catalyst is greatly improved; a water flooding phenomenon caused by the fact that the thickness smaller than 1 micron does not occur and a phenomenon that the conductive property is decreased, caused by the fact that the thickness is more than 10 microns also does not occur; the fuel cell adopting the catalyst can keep relatively long service life in a frequent starting-stopping automobile application environment.

The invention discloses a slurry pipeline transportation system involved in a method for moving mountains and reclaiming land from the sea through wave energy, belongs to the pipeline transportation field of wave energy pure collection and hybrid transfer and particularly relates to a slurry pipeline transportation method and device with pressure seawater serving as power and seawater mixed slurry serving as continuous media. The device comprises a land slurry pipeline transportation mechanism, a sea-level slurry pipeline transportation mechanism, a seafloor slurry pipeline transportation mechanism and a suspended slurry pipeline transportation mechanism. The relevant pipeline transportation mechanisms are connected as required, slurry is jetted from a destination system through the combined action of a pressure seawater manufacturing system, a slurry mixing field system and the slurry pipeline transportation system, soil is deposited, sea water drops away, and the land is formed. According to the slurry pipeline transportation system through opening and closing of an out-degree valve of a three-direction joint structure built on the coast, or through rotation and switching of a rotor of a valve concrete body installed on the seafloor, alternate operation or simultaneous operation is performed on a slurry jetting hull of a bay or a sea island, and therefore the slurry jetting hull can conveniently move when the operation is stopped.

The invention aims to provide a novel tap with convenient use and good air tightness, which comprises a shell and a through pipe, wherein the shell is in a cylindrical shape of which the upper end is opened; both sides of the upper part of the shell are provided with notches; the lower end of the shell is provided with an outlet; the inside of the shell comprises a middle shell and an inner shell; the middle shell is in a cylindrical shape of which the lower end is opened; both sides of the middle shell are provided with notches; the inner shell is in a conical shape with an opened upper end and a gradually narrowed lower end; both sides of the upper end of the inner shell are fixedly provided with two wings; the lower part of the inner shell is provided with an elastic plastic cover; andthe elastic plastic cover is in a conical shape of which the upper end is opened. The elastic plastic cover has elasticity; and when the two wings deviate from initial positions, the plastic cover plays a role of restoring the two wings, the plastic cover does not cut off water flow but not air flow at the moment of blocking the outlet, the phenomenon of air flow backward cannot be generated, andliquid in storage equipment is ensured not to contact air. The novel tap is simple in structure and low in cost, and achieves the aims of convenient use and good air tightness.

The invention discloses a particle dispensing device for PIV based internal flow field measurement of a ventilated cavity. A cavitator in the dispensing device includes an enclosed casing, ventilation holes are formed in the lateral side of the cativator, an air inlet pipe connected to the cativator is communicated with an internal cavity, the internal of the cativator includes a particle caching pipe, the lateral side of the particle caching pipe also includes ventilation holes, an air inlet connecting piece connected to the particle caching pipe is communicated with the cavity, the cavity is formed between the external surface of the particle caching pipe and the internal surface of the cativator, an external pipeline is connected with a particle storage pipe, particles are supplemented timely via two control valves and an air source, and thus, the particles can be dispensed continuously and uniformly. The particle dispensing device can be used for researches on ventilation cavitation of different appearances, and provides convenience for measurement and application of a PIV system.

The invention discloses a digital control system for all plant units in a nuclear power station and a non-nuclear-grade digital control system and method. The non-nuclear-grade digital control system of each unit comprises a first automatic control subsystem and a first operation monitoring subsystem which are in communication connection; the non-nuclear-grade digital control system in the public supply part comprises a second automatic control subsystem; the first automatic control subsystem comprises a plant bus; information exchange between the second automatic control subsystem and the first automatic control subsystem, as well as between the second automatic control subsystem and the first operation monitoring subsystem, is achieved through the plant bus; and the first automatic control subsystem further comprises a network isolating filter module and is used for forwarding a network message to a station related with a physical address according to the physical address in the network message and preventing the network message from being broadcasted to a unit network irrelevant to the physical address. By implementing the technical scheme of the invention, the high efficiency and the stability of network exchange are guaranteed.

A hydroponic vegetable ecological breeding mechanism, which relates to the technical field of vegetable cultivation, includes a platform, a fish pond, a hydroponic breeding box, and a fish tank. A number of hydroponic culture boxes and fish tanks are arranged between them, and the hydroponic culture boxes and the fish tanks are arranged at intervals. The bottom of the fish tank is a funnel-shaped structure, and a vertical pipe is arranged at the bottom of the funnel-shaped structure. The two ends of the connecting pipe are respectively connected with the bottom of the adjacent hydroponic culture box on both sides. There is a vegetable planting plate in the hydroponic culture box. There are vegetable planting holes on the vegetable planting plate, and a flow pump is also provided on the connecting pipe. The hydroponic culture boxes arranged at intervals and the fish tanks are connected end to end to form a closed loop in series through connecting pipes. The invention provides a hydroponic vegetable ecological breeding mechanism, which does not need manual fertilization, can closely combine fish farming and vegetable farming, and implements automatic monitoring and management.

A pull-up circuit for an IO circuit, comprising: an access control module and a pull-up module, connected in series between an IO port and an IO power supply; a switch module, which generates an access control signal according to an IO port signal and a first interface signal, when the IO When the port is input or floating, the voltage value of the IO port signal is equal to the first interface signal, and the access control signal is greater than or equal to the difference between the IO port signal and the preset threshold voltage; the access control module is controlled by the access control signal and the second interface signal When it is turned off or turned on, the voltage value of the second interface signal is equal to the larger one of the voltage value of the IO power supply and the voltage value of the IO port signal. Through the technical scheme of the present invention, when the signal voltage value of the IO port is greater than the voltage value of the IO power supply, it can effectively prevent the current from flowing backward from the IO port to the IO power supply; when the IO port is floating, it is easier to satisfy the potential at the IO port can be pulled up to always be greater than the minimum IO logic output high voltage requirement.

The invention relates to the technical field of medical devices, and discloses a neurology medicine feeder for preventing the occurrence of drug choking, comprising a casing and a rotating shaft. The inside of the soft shell is movably connected with an ejector rod, the outside of the ejector rod is movably connected with a toothed rod, the inside of the shell is movably connected with a pipe, the outside of the shell is movably connected with a piston, and the outside of the piston is movably connected with a stirring rod; Under the interaction between the tube, the soft shell, the ejector rod, the toothed rod and the pipeline, the device can squeeze the soft shell to achieve the effect of compressing the liquid level of the liquid medicine, so that the liquid medicine can be delivered to the liquid through the infusion tube. It is also more convenient to feed the medicine in the patient's mouth, and under the display of the solution scale line, the patient's liquid intake can be controlled to ensure the normal treatment of the patient, which is more suitable for use under actual conditions.

The invention discloses a chimney hood capable of preventing smoke backward flowing and promoting indoor outdoor air exchange. The chimney hood comprises an upper hood body, a top cover, a lower hoodbody, supporting rods I and a clamping part, wherein the upper hood body is in the shape of a cone of which an opening is upward; the top cover covers the opening of the upper hood body; the lower hood body is right positioned below the upper hood body; the upper part of the lower hood body is in the shape of a cone of which an opening is upward; an interval is reserved between the lower hood bodyand the upper hood body; the lower part of the lower hood body is tubular; the upper part and the lower part are integrally welded; the supporting rods I are positioned between the upper hood body and the lower hood body; the two ends of the supporting rods I are fixedly connected with the upper hood body and the lower hood body separately; and the clamping part sleeves the lower part of the lower hood body. According to the chimney hood, gases in a chimney can be smoothly exhausted in a strong wind condition, and air does not backward flow; and besides, when no flue gas exists in the chimney, the gases in the chimney are exhausted under the action of negative pressure, indoor air pressure is smaller than external air pressure, the effect that indoor air and external air exchange is achieved, and indoor air maintains fresh.

The invention provides a parallel flow wet dust-collecting device and an operational method thereof. The dust-collecting device consists of a tower body, a whirlwind mixer, an air inlet pipe, a water inlet pipe, a liquid distributor, a water outlet pipe, a defogger, a circulating pump and a connecting pipeline. Air and washing water enter the whirlwind mixer in a mode of same direction and parallel flow, the air is fully mixed with and impacted by the washing water, the dust removed from the air is discharged from the bottom of the tower, and the clean air enters the defogger to remove the carried fogdrop and is discharged from an air outlet finally. The device has the characteristics of high dust-removing effect, small system resistance, no liquid flooding, small size of tower body and low water consumption, and can be applied to the process of washing and purifying various gases containing dust.