1367results about How to "Timely exclusion" patented technology

The invention provides a power distribution network fault studying and judging method and system. By analyzing the conditions of voltage and current of electric energy meters and transformers of users in a detailing mode, the type of a fault is determined, the affecting range of the fault is determined, the workload for emergent repairing workers after the emergent repairing workers arrive at the site is lightened, the emergent repairing progress is accelerated, and the power fault is removed in time. Meanwhile, before study and judgment begin, whether the fault is caused by arrearage of users is judged, if yes, the judgment is that the fault is caused by arrearage of users, and the study and judgment process is stopped. Therefore, the workload of the study and judgment system is lightened, and the study and judgment time is shortened.

A control method of a robot comprises the following steps of detecting the operating parameters of the robot, generating fault information when the operating parameters are abnormal, sending the fault information to a remote service center, and receiving fault solution information returned by the remote service center. When the robot breaks down, a user can know the fault timely and can remotely learn a fault elimination method, the robot does not need to be sent to a maintenance service department to be detected and maintained every time, and convenience is brought for the user.

The invention discloses a preventative device maintenance method based on dynamic reliability and belongs to the technical field of petrochemical equipment management. The preventative device maintenance method based on the dynamic reliability comprises the following steps of 1 establishing a device basic database including equipment accounts, historical maintenance and repair data, a fault strength analysis data, operation monitoring data and the like; 2 utilizing basic data to conduct operation time analysis, fault strength analysis and alarm state and operation trend analysis on devices; 3 utilizing results to establish a device reliability level and fault strength incidence matrix, formulate DRBPM data analysis logic, automatically screen preventative maintenance devices and generate preventative maintenance planning reports of the devices; 4 examining, verifying and executing the preventative maintenance planning reports of the devices. The preventative device maintenance method based on the dynamic reliability can be used for dynamic analysis and management of states of petrochemical equipment, facilitate formulation of scientific and effective device maintenance measures and provide guarantee for timely device fault elimination and production continuity reliability and can be widely applied to the technical field of petrochemical equipment management.

The invention relates to a tunnel smoke-discharge method, which comprises: (1), insulating one independent smoke-discharge channel in the tunnel, which comprises a smoke-discharge valve, a smoke-discharge transmission channel through to the smoke-discharge channel and a smoke-discharge fan inside the smoke-discharge transmission channel; (2) in normal condition, the smoke-discharge channel, smoke-discharge valve, the smoke-discharge transmission channel and the smoke-discharge fan do not work; (3), when discharging smoke, starting the smoke-discharge valve near the smoke source, to discharge the smoke into the smoke-discharge channel, and via the smoke-discharge transmission channel to be discharge outside the tunnel. The invention also discloses a relative tunnel ventilation system, with independent smoke-discharge system. The invention can be used in variable tunnels.

The invention provides a method for treating hydrochloric acid leachate of ferrotitanium materials. The method comprises the following steps of: dividing and burning leached mother liquid which is obtained by leaching the ferrotitanium materials by using hydrochloric acid leaching liquid; recovering hydrogen chloride obtained by burning for regeneration and cyclic utilization of the leaching liquid. By the method provided by the invention, the leachate is divided according to material balance of the leach elements (mainly comprising iron) of the hydrochloric acid leachate; and one part of theleachate after division is burned and the other part of the leachate is directly or indirectly absorbed by the hydrochloric acid to return to the leaching procedure, so that completely closed circuitcirculation is formed. By the method provided by the invention, the defect of overlarge energy consumption in the burning procedure after the ferrotitanium materials are leached by the conventional hydrochloric acid can be overcome and the burning quantity of the leached mother liquid can be reduced by 40 to 55 percent, so that the energy consumption of the whole process can be reduced by 35 to 45 percent. The method has a good industrial application prospect.

An automatic level-controlling draining dehumidifier mainly comprises a water pump suction pipe, a water pump drainage pipe, an electromagnetic water pump, a water pump fixing cover, an inductive switch fixing part, a water fullness alarming switch, a pumping alarming switch, a drainage quick adapter assembly, a level measuring floater, a water-collecting tray, an osculum, an osculum plug, a compressor and a heat exchanger; the connection is as follows: one end of the water pump suction pipe is connected with the water-collecting tray and the other end is connected with the electromagnetic water pump; one end of the electromagnetic water pump is connected with the water pump suction pipe; the other end of the water pump drainage pipe is connected with the quick adapter assembly; the level measuring floater is arranged below the water pump fixing cover; and the water fullness alarming switch and the pumping alarming switch are fixed by the inductive switch fixing part. The draining method of the dehumidifier comprises the following steps: one electromagnetic water pump is arranged on the side surface of the water-collecting tray; when the dehumidifier is working, the condensed water is generated by the heat exchanger and falls into the water-collecting tray; the level measuring floater rises slowly under the effect of buoyancy with the increase of water quantity so as to measure the height of the water collected in the water-collecting tray; the floater firstly touches the pumping alarming switch with the rising of level and then the electromagnetic water pump starts to work; the quick adapter at the bottom of a chassis can be connected with a rubber drainage tube with length of about 5M; then the electromagnetic water pump drains the water inside the water-collecting tray out of the room through the water pump suction pipe and the water pump drainage pipe; if the floater touches the pumping alarming switch firstly but the electromagnetic water pump does not work.

The invention discloses cast iron evanescent mode paint, which is prepared from the following raw materials in parts by weight: 0.1-15 parts of aluminum oxide, 0.1-10 parts of ferric oxide, 5-30 parts of silicon dioxide, 2-20 parts of bauxite, 10-50 parts of silica sand, 2-15 parts of zircon power, 0-10 parts of silicon carbide, 0.5-10 parts of potash feldspar, 0.1-5 parts of silica sol, 1-5 parts of bentonite, 0.1-8 parts of attapulgite, 0.01-5 parts of lithium magnesium silicate, 0.01-1 part of sodium pyrophosphate, 0.1-8 parts of talcum powder, 1-5 parts of a white emulsion, 0.1-8 parts of xanthan gum, 0.1-5 parts of a BY binder, 0.1-5 parts of CMC, 0.01-1 part of sodium benzoate and 30-200 parts of water. The paint has the excellent property; a coating is tightly combined with an evanescent mode model, so that the casting precision and the invariance invariant are ensured; the coating is slightly sintered at a high temperature; and a very small air hole is formed in the surface, so that the timely elimination of gas generated by thermal decomposition of synthetic resin can be effectively ensured; and the internal defects are reduced.

The invention relates to a high-impermeable anti-floating pile raft structure. The high-impermeable anti-floating pile raft structure is characterized in that a pre-stress hollow tube section is arranged at the upper portion of a bored pile, the pre-stress hollow tube section is concentric with the bored pile, a reinforcement cage of the bored pile penetrates through the pre-stress hollow tube section and extends into a raft foundation to be connected with a raft inner reinforcing steel bar, an inner connection rib is arranged on the inner side of the pre-stress hollow tube section, and a sand cushion layer and a gravel blind ditch are laid at the upper portion of foundation soil. The raft foundation is sequentially provided with a horizontal water-resisting layer, a cemented soil board and a reinforced concrete raft board from bottom to top. A foundation pit support pile and a wall body of a side wall of a basement are fixedly connected through reinforcing rib materials. The high-impermeable anti-floating pile raft structure can enhance the integrity and strength of an upper portion structure, can reduce uplift pressure of underground water and can fully utilize waste slurry of the bored pile to achieve waste utilization. The pre-stress hollow tube section is arranged at the top of a pile body, so that a pile cutting work process of the bored pile is removed, and the construction efficiency is improved. The invention further discloses a construction method of the high-impermeable anti-floating pile raft structure.

The invention discloses a closed type production line device and a method for crushing aluminum oxide crusted blocks. In the invention, materials are crushed primarily on a production line, so that the feeding particle size is less than or equal to 300 millimeters, the discharging particle size is less than or equal to 1 millimeter, a standard discharging particle size which can only be reached by performing secondary and tertiary crushing is reached, the production efficiency is increased, the consumption is lowered, and aluminum oxide crusted blocks are recycled in time; and automatic running of the entire production line is controlled through an electric control system, so that dust purification in the crushing process is realized simultaneously. The closed type production line device consists of a mechanical part and an electric control part, wherein the mechanical part consists of a crusher, an iron remover, a conveyer, a raw material cabin, a gate valve, a vibratory feeder, a pulverizing mill, an air locking discharge valve, a coarse powder separator, a cyclone dust collector, a circular fan, a bag type dust collector, an exhaust fan, iron removers and a finished product cabin. The method for crushing the aluminum oxide crusted blocks comprises feeding, pulverizing, material separating, air replenishing, material and dust collecting and material storing in sequence. The device and the method are safe, environmentally-friendly and efficient, and energy is saved.

Provided is a partition and segmentation on-line positioning method for small-current grounding faults, which comprises first utilizing a pressure measuring unit (PMU) voltage measurement device arranged on a converting station busbar and a plurality of PMU current measurement devices arranged on a circuit to respectively measure zero-sequence voltage of the converting station busbar and zero-sequence currents on each measurement point on the circuit, then determining the upper and lower stream relation between each measurement point and fault points according to the phase-relation between the zero-sequence current of each measurement point on the circuit and the zero-sequence voltage of the busbar of the converting station, and further obtaining a fault interval with the measurement points serving as boundary nodes. The partition and segmentation on-line positioning method for the small-current grounding faults can fast and accurately determine the fault areas and the fault points of small-current grounding under the condition of non-outage, is not influenced by grounding fault types, does not need additional signal devices, is simple to operate, and has high reliability. The partition and segmentation on-line positioning method for the small-current grounding faults can help maintenance personnel to remove faults in time, and is suitable for various fault conditions of metallic grounding, grounding through voltaic arcs, grounding through transition resistors and the like.

The invention relates to a preparation method for a proton exchange membrane fuel cell gas diffusion layer under high current density. The preparation method comprises the following steps: firstly, carrying out hydrophobic and drying treatment on a substrate layer, then preparing slurry by utilizing carbon powder, a solvent, a hydrophobic agent and a pore-forming agent, then uniformly attaching the slurry to the substrate layer by adopting a blade coating method and reaching a certain loading capacity, and finally drying and sintering to obtain the gas diffusion layer. A plurality of cracks are formed on the surface of the microporous layer of the gas diffusion layer after the gas diffusion layer is treated, permeation of gas and water can be effectively ensured, the water management capability of the gas diffusion layer is improved, the concentration polarization of the membrane electrode under high current density is reduced, and the performance of the proton exchange membrane fuel cell is improved. The method has the advantages of low cost, simple preparation process and the like, and is particularly suitable for commercial large-scale use.

The invention discloses an anaerobic fluidized bed reactor, characterized in that: the anaerobic fluidized bed reactor is a two-section cylinder which is thin above and thick below, the upper section is connected with the lower section through a taper transition section, a completly mixed reaction zone and a plug flow reaction zone are arranged in the reactor from bottom to top, a guide cylinder is arranged in the completly mixed reaction zone, a cover hood is arranged above the guide cylinder, a liquid-solid separator is arranged in the plug flow reaction zone, a three-phase separator is arranged above the liquid-solid separator, the water outlet of the three-phase separator is successively connected with a circulating pump and a jet nozzle through a circulating pipeline, and a water inlet pipeline is connected with the jet nozzle. By using outer circulation to drive inner circulation, the efficiency of the reactor is greatly raised.

The invention discloses an enrichment analysis instrument of carbon and nitrogen of the greenhouse gases of CO2 and N2O. A greenhouse gas sample collected by a sampling tube is led through a sample guiding valve under the He gas, is dehydrated by an electron cold trap, undergoes enrichment and transferring in a liquid nitrogen cold trap, undergoes separation by a chromatographic column and dehydrating by a water trap and is led into a gas isotope mass spectrometer through an opened shunting port for being detected. The enrichment analysis instrument has the port which is directly connected with an isotope mass spectrometer mainframe, is an independent accessory device of the isotope mass spectrometer and carries out assay determination on isotope abundance of the carbon and the nitrogen of the greenhouse gases of CO2 and the N2O which are greenhouse gases at the same time. The gas is transferred from a cold trap T1 to a cold trap T2 through conversion of gas-carrying flow and by changing a freezing state of the target gas in the traps. Meanwhile, other impurity gases which are captured by a freezing gas are released and thus, good chromatographic peak shapes and higher purity of the sample are achieved and the testing precision is improved.

The invention discloses a method and a device for detecting a one-way fault. The method comprises the following steps: sending a link state query message to a Designated port by a downstream device with the help of a Root port, and confirming the one-way fault in the direction from the Root port to the Designated port by the downstream device when no link response message from an upstream device is received by the downstream device within an appointed time. By adopting the method, the one-way fault can be accurately detected.

The invention discloses a large-size wafer level nano-patterned sapphire substrate imprinting device and method. The method is characterized by (1) depositing a hard mask layer and spin-coating a resist for nanoimprint on the sapphire substrate; (2) adopting a roll-to-flat nanoimprint process and device to pattern the resist; (3) transferring the patterns on the resist to the hard mask layer and the sapphire substrate; and (4) removing the resist and the hard mask layer and washing the patterned sapphire substrate. The device and the method can be used for patterned manufacturing of the substrates made of silicon carbide, silicon, gallium arsenide, gallium nitride and other materials and manufacturing of such micro-nano structures as solar cells, fuel cell bipolar plates, micro-optical lenses, micro-fluidic devices and the like. The device has the characteristics of simple structure, low cost, high productivity, large imprint area and suitability for scale manufacturing.

The invention discloses a coud platform based non-intruding load monitoring system and identification method. The system comprises a hardware node, a cloud server and an intelligent terminal; the hardware node and the intelligent terminal communicate with the cloud server via a network communication module; the hardware node comprises a power supply management unit, a power metering unit, an optical coupler isolation unit, a digital pulse signal counting unit, a microcontroller and a wireless communication unit; the power supply management unit provides needed electric energy for the hardwarenode; and the power metering unit, the optical coupler isolation unit, the digital pulse signal counting unit, the microcontroller and the wireless communication unit are connected sequentially. According to the system and method, power data of a power load is collected in a non-intruding manner, the operation state of the power load is analyzed by means of the cloud server, the type of the powerload is identified, a user is guided to plan power utilization reasonably, energy saving and emission reduction can be realized, faults are eliminated timely, and the system and method become inevitable trend of development of smart grid.

The invention discloses an SPARC V8 system structure based classified type mixed branch prediction system. Firstly, a branch target buffer is queried according to PC values of instructions at an instruction fetching stage to obtain branch instruction types; the branch instructions are dispatched to respective prediction modules; a return address stack (RAS) with a dynamic configuration counter is used in skip branch prediction; a complementary prediction method is used in indirect branch prediction; a tag recording correctness of previous branch prediction in a conditional branch target buffer (CBTB) adopts a partial skip three-state conversion algorithm in conditional branch prediction; decoding result information of the instructions are recorded in a prediction information table (PIT) at a decoding stage; a judgment is made at an execution stage; if a prediction result of the branch instructions is that the skip occurs, the result judgment is made by using a skip prediction result arbiter Arbiter_T; and if the prediction result of the branch instructions is that the skip does not occur, the result judgment is made by using a non-skip prediction result arbiter Arbiter_N. Therefore, the instruction delay influence of the branch instructions on an assembly line is eliminated and the execution efficiency of a processor is improved.

The invention discloses a motor rotation shaft assembly method comprising the steps as follows: a rotary disc is arranged on a machine stand, and an axis rod fixed seat detection device, an axis rod transportation and installation device, an axis rod detection device, a lower pressing ring transportation and installation device, a lower pressing ring detection device, a first oil injection device,a gear transportation and installation device, a second oil injection device, an upper pressing ring transportation and installation device, an upper pressing ring detection device, a finished product moving device and a defective product recycling device are arranged around the rotary disc; a riveting device, a running-in device, a friction force detection device and a sorting device are installed on one side of the rotary disc; and a PLC control system for controlling the device is also installed on the machine stand. Five processes such as automatic assembling, riveting, detecting slippingfriction force and sorting are combined together. The invention also discloses equipment for implementing the method. According to the equipment and the method, the product friction force is controlled in a closed loop, the degree of automation is high, the production cycle of products is effectively shortened, the production cost is reduced; during a production process, detection can be performed according to user demands and product characteristics, the production status can be conveniently better analyzed, an alarm can be given for the abnormal condition during the production process; theproduction abnormity can be eliminated in time, and the product qualification ratio is ensured.

The invention discloses an automatic detection and control method for braking force of an elevator, which belongs to the field of elevator control and brake technologies. The automatic detection and control method comprises the following steps of: successively detecting each group of brakes when the elevator is in the dormant state and reaches detection time; and when the detected brake is braked, determining that the group of brakes fails when a lift car displaces, then giving out a fault signal, and stopping using the elevator. The automatic detection and control method has the advantages that the braking force situation of the elevator is convenient to detect, faults can be removed in time, and the elevator is guaranteed to safely and reliably operate. Variation on a control system is small, and therefore the automatic detection and control method is easy to operate. The special parameter of the elevator does not need to be input, which is simple and effective, and the popularity of the control system is wider.

The invention relates to an outer drying steam triple-effect heat exchange system. A flow divider is arranged in the liquid phase space of a water-bath-type saturated steam generator, and a steam discharge pipeline of the flow dividier is sequentially provided with a steam water separator and a steam drying heat exchanger; overheated steam enters the flow divider through a pressure control valve; wet saturated steam from the saturated steam generator is heated into dry saturated steam by overheated steam; the dry saturated steam enters a main steam heat exchanger and becomes high-temperature condensation water after materials are heated for the third time; flash steam of the high-temperature condensation water heats the materials in the flash steam heat exchanger for the second time; condensed flash steam enters the condensation water heat exchanger; the condensation water in the high-temperature condensation water continuously releases sensible heat to heat the material for the first time; the condensation water after temperature reduction enters a water collecting tank, and is pumped into the saturated steam generator by a water supplying pump; and the aperture of the pressure control valve is regulated by a PLC (programmed logic controller) according to the material outlet temperature. The system achieves cascading utilization of steam heat energy, guarantees that the steam heat energy can be used up, and improves the energy efficiency.

The invention discloses a vegetation-concrete double-layer protective screening side slope ecological greening system. Longitudinal and transverse supporting ropes and a plurality of anchor rods or anchor ropes buried on a side slope form a protective screening fixing system; each of a base-layer protective screening and a surface-layer protective screening consists of a plurality of protective screening blocks which are spliced; base course vegetation-concrete layers are arranged between the base-layer protective screening and the surface of the side slop as well as above the base-layer protective screening; surface course vegetation-concrete layers are arranged between the base course vegetation-concrete layers and the surface-layer protective screening as well as above the surface-layer protective screening; a plurality of connection devices are buried on the side slope; each protective screening block of the surface-layer protective screening is fixed at the upper part position of each connection device through each connection device. The invention provides the vegetation-concrete double-layer protective screening side slope ecological greening system and a method for performing side slope ecological greening by using the system in order to solve the technical problems; the stability of the side slope can be retained, the environment can be beautified and the ecological balance can be maintained; integration of engineering protection and ecological protection of the side slope is realized.