154results about How to "Stabilization" patented technology

The invention relates to the technical field of sewage treatment, in particular to a low-carbon nitrogen and phosphorus removal sewage treatment system, a sewage treatment method and application thereof. The sewage treatment system comprises a pretreatment unit, an adsorption tank, a mid-sedimentation tank, a biochemical tank, a secondary sedimentation tank and an anaerobic hydrolysis acidification tank; the biochemical tank comprises an anaerobic tank, an anoxic tank and an aerobic tank; the anaerobic hydrolysis acidification tank is provided with a VFAs-containing supernate outlet communicated with the anaerobic tank; the mid-sedimentation tank is provided with an adsorbed sludge outlet and a sewage outlet, the adsorbed sludge outlet is communicated with the adsorption tank and the anaerobic hydrolysis acidification tank, and the sewage outlet is communicated with the anaerobic tank; the secondary sedimentation tank is provided with a biological sludge outlet and a water outlet, and the biological sludge outlet is communicated with the anaerobic tank and the anaerobic hydrolysis acidification tank. According to the sewage treatment system, denitrifying phosphorus-accumulating bacteria, nitrifying bacteria and hydrolytic acidification bacteria can be cultured in different sludge systems, and the contradiction between the denitrifying phosphorus-accumulating bacteria, the nitrifying bacteria and the hydrolytic acidification bacteria on substrate competition and sludge age is solved; and the anaerobic hydrolysis acidification tank is arranged to recycle a carbon source in the sewage, so that the advantage of low carbon is achieved.

The invention relates to a slag performance regulation and control method for large-proportion collaborative smelting of multi-source lead-based solid waste in flash lead smelting, belongs to the technical field of non-ferrous metal smelting, and mainly solves the problem of collaborative regulation and control of the viscosity performance of slag by factors such as ZnO content, Al2O3 content, CaO / SiO2 mass ratio, alkalinity and the like of FeOx-CaO-SiO2-ZnO-PbO-Al2O3 system slag so as to realize low-carbon and safe smooth smelting. The method comprises the following steps: (1) reasonably controlling the contents of elements such as Zn and Al in a mixed material fed into a furnace and the addition amount of a CaO flux and a SiO2 flux, and starting smelting; (2) in the flash smelting process, the content of ZnO in the slag is controlled to be lower than 25 wt%, the content of Al2O3 in the slag is controlled to be lower than 6 wt%, the mass ratio interval of CaO / SiO2 is 0.30-0.50, the alkalinity interval is 1.8-2.3, and flash smelting and slag-lead separation are completed; and (3) normally discharging slag and lead. According to the method, in the production practice of flash lead smelting, the problem that slag and lead are difficult to separate due to collaborative smelting of large-proportion and multiple types of high-zinc and high-aluminum solid wastes can be solved, the safe, energy-saving and efficient lead smelting process is guaranteed, and the production capacity of the flash lead smelting furnace for treating the multi-source lead-based solid wastes is improved.

The utility model discloses an MVR (mechanical vapor recompression) concentrated solution treatment device, which belongs to the field of wastewater treatment and comprises a first coagulating sedimentation device, a second persulfate advanced oxidation device, a second persulfate adding device for adding persulfate into the second persulfate adding device, a third biochemical treatment device, a fourth membrane treatment component and a fifth clear water tank. Wherein the MVR concentrated solution to be treated can be fed into the first coagulating sedimentation device. The first coagulating agent adding device is connected with the first coagulating sedimentation device, and the first coagulating agent adding device is used for adding a coagulating agent into the first coagulating sedimentation device, so that the MVR concentrated solution is flocculated and settled, and first coagulated sludge and first coagulated supernate are respectively obtained. The method can be suitable for MVR concentrated solution treatment scenes with different scales and treatment requirements, the wastewater treatment efficiency is improved, the treatment cost is reduced, efficient and stable treatment of wastewater can be achieved, and the method has high application value and wide popularization and application value.

The invention discloses a video anomaly detection method based on a multi-modal condition diffusion model, and belongs to the technical field of video anomaly detection. The method comprises the following steps: preprocessing a video to generate a video space-time cube and an optical flow space-time cube; constructing a diffusion model, and obtaining an abnormal score; performing weighted calculation on the reconstruction anomaly score and the prediction anomaly score; and evaluating the obtained final anomaly score to complete video anomaly detection. According to the invention, through a multi-task combination mode of optical flow reconstruction and video frame prediction, abnormity is easier to distinguish; multi-modal data are fused, feature information of more dimensions is captured, and the accuracy of anomaly detection is improved; the model is more stable when processing noise and complex backgrounds, and the stability of anomaly detection is improved; the reconstructed optical flow is used as a condition for guiding future frame prediction, the prediction error between an abnormal prediction frame and an original frame is expanded, the prediction error between a normal prediction frame and the original frame is reduced, and the training effect and performance are ensured.

The invention relates to the technical field of unmanned aerial vehicle FPV, in particular to an unmanned aerial vehicle FPV remote sensing audio-visual system and method.The unmanned aerial vehicle captures high-definition image data through a digital image transmission module and transmits the high-definition image data to FPV equipment through an antenna system; the FPV equipment receives the image data through an anti-interference mechanism, and decompresses the image data through an efficient codec; quickly processing the decompressed image data by using a hardware acceleration unit, and converting the decompressed image data into a format which can be displayed by FPV equipment; and the continuity and fluency of the image data are ensured through a caching and buffering mechanism. The digital image transmission module ensures the definition and detail performance of an image, the anti-interference mechanism can effectively resist external electromagnetic interference and ensure stable transmission of image data in a complex environment, the efficient codec and the hardware acceleration unit perform rapid processing on the image data, the caching and buffering mechanism ensures the continuity and smoothness of the image data, and the stability and reliability of the image data are improved. And the user experience is effectively improved.

The invention provides an intelligent recognition method and system for an ultra-large format document based on block parallel. The method comprises the following steps: acquiring image data of a to-be-recognized document; a self-adaptive blocking strategy is adopted, dynamic blocking is conducted according to an available memory of a system or image features, a certain overlapping area is kept between every two adjacent blocks, and then blocking tasks are converted into an asynchronous task queue; using a thread pool to process each block in parallel, or adopting a distributed computing architecture to distribute tasks to a plurality of computing nodes for execution; detecting a text region and a table structure, and performing text recognition on the detected text region through a text recognition model; processing results of all the blocks are collected and combined according to the recorded position information; and performing confidence scoring according to an identification result output by the text identification model to optimize a text region, and performing visualization processing and layout analysis on the optimized text to generate an output result in a standard format.

The utility model discloses a waste water utilization device of a water-jet loom, which comprises a recycling box, a water-jet loom, a water-jet loom and a water-jet loom, a filtering mechanism used for removing fibers is arranged in an inner cavity of the recycling box and comprises filtering cloth, and the filtering cloth is obliquely fixed to the inner wall of the recycling box; the driving assembly is arranged in the middle of the recycling box; the scraping assembly is arranged between the filter cloth and the driving assembly; the servo motor is arranged at one end of the driving assembly; and the connecting hole is formed in one end of the recycling box. Through the arrangement mode that the filtering mechanism and the collecting mechanism are matched, fibers and water can be conveniently screened through the filtering cloth, impurities can be conveniently pushed to the inner cavity of the collecting mechanism to be collected through the scraping assembly, the impurities can be stably treated, fiber impurities in waste water can be conveniently filtered, and the waste water treatment efficiency is improved. And the recycling efficiency of later wastewater is improved.

The invention discloses a filtration and separation system for mariculture tail water treatment, and relates to the technical field of tail water treatment.The filtration and separation system comprises a treatment circulation water channel, a sedimentation tank is installed in the side of the treatment circulation water channel, the side of the sedimentation tank is communicated with a liquid inlet end, and the side end of the sedimentation tank is communicated with a seawater desalination pretreater through a liquid drainage guide pipe; a pH detector is installed at the side end of the seawater desalination preprocessor, the side end of the pH detector is communicated with a dynamic filtering and adjusting assembly through a treatment pipe, under the cooperation of the dynamic filtering and adjusting assembly, pollutants in water are effectively removed, the treatment strategy can be automatically adjusted according to the water quality change, the treatment efficiency and the water quality safety are improved, and the water quality is guaranteed. According to changes of seasons, culture varieties and management practices, water quality treatment is adjusted dynamically, and the influence of high salinity and osmotic pressure in seawater on a filtering membrane material is reduced, so that in the water treatment process, the pH value is effectively treated and controlled, and the service life of a plurality of groups of fillable filtering membranes is guaranteed.

The invention relates to the technical field of industrial wastewater treatment, and discloses a wastewater treatment method in a carton printing production process, which comprises the following steps of: 1, filtering carton printing wastewater through a coarse grid and a fine grid in sequence to further remove particle suspended matters; 2, the filtered wastewater enters a regulating tank, the pH value of the wastewater is monitored through an on-line pH sensor, NaOH or H2SO4 is accurately added through an automatic control system according to the monitoring result, the pH value is regulated to 6-8, and the retention time of the wastewater in the regulating tank is controlled to be 6-8 h. Through multi-stage grid filtration and micro-electrolysis pretreatment, suspended particles and macromolecular organic matters in the wastewater are effectively removed, the load of a subsequent unit is reduced, meanwhile, the biodegradability of the wastewater is improved, favorable conditions are provided for subsequent biological treatment, the overall treatment efficiency is remarkably improved, and the risks of system blockage and equipment maintenance are reduced.

The utility model discloses a sand-water separation device for a sewage pump station. The device comprises a bottom frame, an outer pipe, a separation pipe and a driving assembly. The outer wall of the outer pipe is welded to the top of the underframe. A drainage pipe is welded to the outer wall of the bottom of the outer pipe, and the drainage pipe communicates with the interior of the outer pipe; the outer wall of the separation pipe is rotationally connected to the interior of the outer pipe, and one part of the separation pipe extends out of the outer pipe; and filter holes are formed in the inner wall of the separation pipe. Under the action of the chain, the chain wheel shaft and the transmission gear, the motor can drive and rotate the separation pipe, sand and water are separated through the filtering holes in the separation pipe, sewage is filtered to the outer pipe and discharged through the drainage pipe, sand and stone are pushed and discharged through the rotating spiral blade, and a large amount of sand and water can be continuously added for separation in the separation process. The influence of continuously adding the sand water on separation is reduced, so that the sand water is treated at a relatively stable separation speed, and the daily sand water treatment of a sewage station is ensured.

The invention relates to the technical field of forging of motor shafts, and discloses a forging process for a motor shaft of a wind power generator, characterized in that the process is composed of the following steps: S1, selecting a blank, and then uniformly heating the blank; S2, placing the heat-insulated blank into a forging die, and performing the first forging; S3, uniformly heating the first forging; S4, performing the second forging; S5, placing the second forging into a heating furnace for solid solution treatment, and controlling the elongation deformation of the second forging to be 14% to 35%; S6, sending the forging treated in S5 to 1200°C and then performing solid solution treatment in a heating furnace, and elongating the second forging. The forging process for a motor shaft of a wind power generator ensures that the blank is not directly heated by flame during the forging process of the motor shaft, the heating temperature is easy to control, and the phenomenon of uneven heat will not occur during the rapid heating process.

The invention discloses a device and a method for enhancing biological sewage treatment performance by using sludge alkaline fermentation liquor, and solves the technical problems of high energy consumption and complicated operation in the prior art. Comprising a grating, a primary sedimentation tank, an anoxic tank, an aerobic tank, a secondary sedimentation tank, a sludge mixing tank, a sludge alkaline fermentation tank, a sludge conditioning tank and a filter press, guide plates are arranged in the middle of the anoxic tank, suspended biological filler is arranged between the plates, combined filler is arranged in the middle of the aerobic tank, and the filter press is arranged in the anoxic tank. The sludge conditioning tank is provided with an acid dosing tank, a coagulant dosing tank, a magnesium chloride dosing tank and a rapid stirrer. The sewage treatment performance can be effectively improved, the total nitrogen removal rate is increased, the treatment load of an anoxic tank is increased, the operation stability of a sewage treatment system is enhanced, the addition amount of an external carbon source is reduced, the sludge volume is reduced, and the carbon emission of a sewage plant is reduced.

The invention relates to the field of big data technology and financial science and technology, and discloses a data real-time labeling method, device and equipment and a storage medium, and the method comprises the steps: obtaining user information, collecting label information of the changed user information through a preset software development kit module, and sending the label information to a preset message component by using a non-blocking input and output mode, asynchronously writing the label information in the message component into a label library, and generating a real-time label by using change data of the label information in the label library. According to the invention, the data synchronization efficiency and the real-time label generation efficiency can be effectively improved.

The invention provides a biological multi-modal feature recognition method and device based on dynamic fuzzy reasoning. The method comprises the steps that an obtained face image, a fingerprint image and an iris image of a target object are preprocessed; performing feature extraction on the preprocessed face image, the fingerprint image and the iris image, and determining a three-dimensional Euclidean distance of the face, the fingerprint and the iris between the target object and an object to be verified in a database according to a feature extraction result; performing fuzzy reasoning based on the three-dimensional Euclidean distance of the face, the fingerprint and the iris to obtain a recognition score; comparing the identification score with a preset decision threshold value, when the identification score is greater than or equal to the decision threshold value, determining that the target object is matched with the to-be-verified object, otherwise, determining that the target object is not matched with the to-be-verified object; wherein the decision threshold value is obtained by training through a reward / punishment mechanism based on preset target recognition precision. The method can effectively cope with various environment changes, improves the recognition accuracy, and is suitable for application scenes needing extremely high safety.

The utility model discloses an air floatation combined treatment device for gas field produced water, which comprises an adjusting tank and a first water pump connected to the rear end of the adjusting tank, and the tail end of the first water pump is respectively connected with a first-stage three-phase vortex air floatation and a second-stage multi-phase equilibrium air floatation. And the first-stage three-phase vortex air floatation comprises a water inlet valve I connected to the water outlet end of the first water pump. According to the device disclosed by the utility model, the water inlet valve I, the water inlet valve II and the branch water outlet valve I and the branch water outlet valve II of the water outlet pipe are arranged, so that the gas field produced water can be independently subjected to primary three-phase vortex air floatation treatment, secondary multi-phase balanced air floatation treatment and combined treatment of primary three-phase vortex air floatation and secondary multi-phase balanced air floatation; the three treatment modes are adopted to adapt to different requirements, the treatment efficiency of the gas field produced water is remarkably improved, oil drops and suspended solids in the produced water are more comprehensively removed, different treatment modes are selected according to needs, energy can be saved, the cost can be reduced, and the practicability of the device is improved.

The invention discloses a three-dimensional FDTD metal conformal stabilization simulation method. The method comprises the steps of grid construction and boundary identification, effective electromagnetic parameter calculation, stability condition pre-verification, field quantity iteration updating and boundary condition convergence judgment. According to the method, high-precision and high-stability electromagnetic simulation of a complex medium boundary and a metal boundary is realized by combining an integral form of the effective dielectric constant and the magnetic conductivity, a posterior weighted stabilization strategy and a strict integral updating rule of the metal boundary, meanwhile, the robustness of an algorithm to a time step length is improved, and the practical application scene of the method is expanded.

The present disclosure relates to the technical field of cold header, and one embodiment of the present disclosure provides a torsion shear bolt cold header, which comprises a calibration device, and the calibration device comprises two side plates one. In the present disclosure, the design of the cooperation of the extrusion roller one and the extrusion roller two with the inclined surface of the positioning ring effectively corrects the bending deformation of the steel bar, and significantly improves the feeding smoothness; the circulating cooling and lubricating system composed of the water tank and the water jet head not only reduces the friction resistance between the steel bar and the mold, but also prolongs the service life of the equipment; through the cooperative control of the electric clamp and the cold header, the precise feeding and forming of the steel bar are realized, and the forming precision of the torsion shear ring groove is ensured. These improvements enable the equipment to stably process the bent steel bar, greatly improve the production efficiency and product quality; through the above technical scheme, the technical problem of easy deformation of the steel bar in the related art is solved.

The present application relates to wastewater purification reuse system technical field, more specifically, it relates to a kind of wastewater purification reuse system for heat-sensitive paint production, comprising: data acquisition module;Wastewater pH adjustment controller;Based on the comparison result of the pH value of heat-sensitive paint wastewater and set target pH value, generate pH value adjustment coefficient;Based on pH value adjustment coefficient, generate alkaline solution adding instruction;Liquid alkaline adjusting device, with wastewater pH adjustment controller communication connection, receive alkaline solution adding instruction;Add alkaline solution to the blending pool;Receive the pH value and temperature of the liquid of blending completion sent by data acquisition module;Based on the comparison result of the pH value of blending completion liquid and set target pH value, generate pH value adjustment coefficient;Based on pH value adjustment coefficient, generate liquid temperature regulation instruction;Blending liquid pH adjustment mechanism, with blending liquid pH adjustment controller communication connection, for the liquid temperature regulation of blending completion liquid in blending pool.

The utility model belongs to the technical field of wastewater treatment, and particularly relates to wastewater treatment equipment which comprises an adjusting tank, two supporting rods are fixedly connected to the top of the adjusting tank, the two supporting rods are oppositely arranged, a first rotating shaft is fixedly connected to the ends of the two supporting rods, a medicine storage rod is fixedly connected to the middle of the first rotating shaft, the interior of the medicine storage rod is hollow, a first gear is fixedly connected to the middle of the medicine storage rod, a motor is fixedly connected to the middle of one supporting rod, and a second gear is fixedly connected to the middle of the other supporting rod. The output end of the motor is fixedly connected with a second gear, the second gear is meshed with the first gear, the middle of the medicine storage rod is fixedly connected with two hinged seats, the two hinged seats are oppositely arranged and fixedly connected to one end of the first gear in the hospital, the middle of each hinged seat is fixedly connected with a first connecting rod, and the middle of each first connecting rod is fixedly connected with a second connecting rod. According to the chemical treatment device, the effect of full play of chemicals can be effectively improved, the stability of the usage amount of the chemicals is improved, and the problems of waste and poor treatment effect caused by too much or too little addition of the chemicals are effectively reduced.

This invention provides an organic substrate preparation device and method suitable for rose cultivation, relating to the field of organic substrate preparation technology. The device includes a telescopic mechanism comprising a bidirectional mechanism and a driving mechanism. The telescopic mechanism provides not only circumferential stirring torque but also vertical mixing torque, thus ensuring thorough mixing of the organic matter in multiple directions. The bidirectional mechanism generates irregular vertical movement in response to circumferential stirring, further enhancing the vertical mixing of the organic matter and achieving multi-dimensional composite stirring. This significantly improves mixing uniformity and fermentation efficiency. The invention utilizes a unique spatial linkage (side rod, inner / outer ball sleeve) and flexible transmission (unidirectional mechanism) design to intelligently decompose the unidirectional rotation of the driving shaft into a superposition of circumferential revolution and axial reciprocating motion of the stirring components (upper / lower stirring sleeves).

This utility model discloses a wire EDM machine tool for steel sheets, comprising a machine body, a working fluid discharge pipe installed on one side of the machine body, the end of the working fluid discharge pipe being connected to one side of a filter cartridge, the other end of the filter cartridge being connected to one end of a transfer pipe, and the horizontal portion of the transfer pipe being connected to one side of the middle of a spherical tank; the transfer pipe, the outer wall of the bottom end of the transfer pipe being fixedly connected to the top of the inner wall of a separator mesh cylinder, the bottom end of the separator mesh cylinder being fixedly connected to the bottom of the inner wall of the spherical tank, and a bottom discharge pipe installed at the bottom of the spherical tank; the spherical tank, a safety plate being fixedly fixed to the upper part of the inner wall of the spherical tank, and an exhaust pipe being installed at the top of the spherical tank. This wire EDM machine tool for steel sheets adopts a novel structural design, which can filter and adsorb debris in the working fluid multiple times, ensuring the separation effect of debris from the working fluid. Furthermore, the filtration and adsorption can be easily disassembled, cleaned, and purified, enabling the entire device to stably process the working fluid for a long time.

The utility model discloses a kind of processing device of water body filter membrane fixed environmental microorganism DNA, including the pretreatment box of being equipped with several placing cavities and the collection box with refrigeration component in inner cavity, pre-treatment pipe is placed in placing cavity and placing cavity lower end is equipped with liquid outlet passage, refrigeration component upper side is connected with the metal containing body of being equipped with several containing cavities, containing cavity contains centrifuge tube, the assembly plate of being located centrifuge tube upper side is covered on the upper end cover of collection box, assembly plate includes the assembly hole of being connected with the liquid outlet passage and centrifuge tube and the fixing column in assembly hole inner cavity, fixing column is fixedly connected with the stainless steel needle that can penetrate liquid outlet passage and pre-treatment pipe.The utility model can synchronously process multiple samples at a time, shorten the processing time of batch samples, improve the processing efficiency and collection efficiency of microorganism DNA sample, the temperature of centrifuge tube in containing cavity can be stably controlled at 4 ℃, realize the rapid, batch, stable processing of water body filter membrane fixed environmental microorganism DNA.

One aspect of the present invention is a method for producing a compound represented by following general formula (1), the method being characterized by including a step of mixing ethylene, a compound represented by following general formula (2), and a compound represented by following general formula (3) to react with each other to give a compound represented by following general formula (4): wherein, A1 to A4 each independently represent an aromatic group, and Z1 and Z2 each independently represent an oxygen atom, a sulfur atom, or a borane (BH3), Z3 represents an oxygen atom or a sulfur atom, n1 to n3 each independently represent 0 or 1, and X represents a halogen atom.

This invention relates to the field of biosensing technology, providing a self-driven sorting device with a near-field direct-write gradient grid and its fabrication method. The invention aims to solve the problems of existing microfluidic sorting devices, such as reliance on external power, susceptibility to stacking and clogging, and severe human background interference. The device constructs a spatially heterogeneous geometric topological grid in situ on a porous substrate using a near-field direct-write process, forming a three-level gradient path consisting of a primary coarse filtration zone, a secondary sorting zone, and a tertiary retention zone. This invention utilizes substrate capillary forces to drive sample flow and achieves physical guidance and precise retention of human cells through a deterministic lateral displacement mechanism. While significantly increasing sample processing throughput, it drastically reduces the proportion of human reads in sequencing, providing a convenient and efficient technical platform for automated preprocessing of complex biological samples and high-sensitivity clinical detection.

The present invention discloses a highly adaptable river water distribution and regulation device, comprising a gate body, a gate connected to the gate body through a driving member, a mounting frame fixed to the inner side of the gate body, a movable rod vertically slidably sleeved on the mounting frame, and a mounting cylinder fixed to the inner end of the movable rod; a spiral conveying rod rotatably arranged in the mounting cylinder, a movable sleeve is provided on the middle limit rotation sleeve of the mounting cylinder, a garbage guiding assembly is provided between the mounting cylinders in the collection frame, a motor is fixed to the outer side of the end of the mounting cylinder, a gear sleeve is meshed on one side of the gear roller, a gear is sleeved on the output shaft of the motor, and one end of the rack is installed inside the end of the mounting cylinder through an elastic telescopic rod. The highly adaptable river water distribution and regulation device can filter and collect garbage in the water when the gate is opened for regulation, and can prevent garbage from overflowing when the gate is closed.

The utility model relates to ironing equipment technical field, and disclose a kind of efficient curtain ironing equipment, including steam generation module and hose, the gas outlet end of steam generation module is connected with hose, further include the gas guide pipe structure of being set to the one end of hose away from steam generation module, gas guide pipe structure is connected with hose, metal ball type gas outlet component is set on the gas guide pipe structure, gas guide pipe structure is connected with the bottom of metal ball type gas outlet component, gas outlet is opened on the spherical surface of metal ball type gas outlet component, gas outlet is penetrated to the inside of metal ball type gas outlet component, multiple gas outlets are evenly distributed in the top around of metal ball type gas outlet component, by metal ball type gas outlet component and the uniform hole design of surrounding, steam coverage range significantly expands, steam injection uniformity significantly improves, spherical structure is easier to operate and move, corner and wrinkle processing is more efficient, fatigue reduces and corrosion resistance improves.

The utility model relates to the technical field of cement metering, and discloses a bulk cement metering device with a containing mechanism, which comprises a frame body, an opening is formed in the right side of the rear end of the frame body, a balance plate is hinged in the frame body, a metering assembly is arranged at the bottom end of the balance plate, a containing assembly is arranged at the top end of the balance plate, and the containing mechanism is arranged in the frame body. By arranging the metering assembly and the containing assembly, firstly, the containing box is placed on the left side of the top end of a balance plate, and then through cooperative use of a groove body, a motor, a screw rod, a moving block, a sliding block, a sliding groove, a connecting plate, an inserting column and an inserting hole, the containing box can be positioned and placed; and then the weight body is added into the weight frame according to the needed weight, along with continuous increase of cement, when the balance plate is in a balance state, it is regarded that the needed weight is reached, and the controller controls the electromagnetic valve to be closed to stop feeding.

The invention discloses a capacitive voltage division type voltage transformer suitable for broadband voltage measurement and a measurement method, and relates to the technical field of power grid broadband voltage measurement, the transformer mainly comprises a high-voltage capacitor and a low-voltage capacitor which are connected in series, a neutral point measurement coil and an impedance transformer. The measurement method relates to calculation in multiple aspects such as capacitance voltage division, inductance coil induction and circuit impedance matching, and accurate voltage measurement can be realized in a broadband range of 10Hz-1MHz. Compared with the prior art, the measuring precision is improved, the dynamic response characteristic and the broadband measuring capacity are good, the performance is stable and reliable, the structure is simple, and installation and maintenance are easy.

This utility model discloses a denitrification packing carrier for biological filters, belonging to the field of denitrification packing technology. It includes a packing matrix with multiple insertion and mounting cavities on its sidewalls and a mesh structure, microbial balls placed inside the packing matrix, and packing blocks located at each of the insertion and mounting cavities. Several packing blocks are attached to the sidewalls of the packing matrix, allowing it to contact wastewater from various directions. The activated carbon adsorption packing within the mesh packing blocks adsorbs the wastewater in the biological filter, while nitrifying bacteria, denitrifying bacteria, and polyphosphate-accumulating bacteria loaded on the microbial balls perform combined denitrification treatment. During the treatment process, the exothermic balls in each release cavity heat up upon contact with water, raising the temperature of the biological filter and thus promoting the denitrification reaction efficiency. This denitrification packing carrier for biological filters can efficiently and stably treat nitrogen pollutants in wastewater, achieving water purification goals.

The present invention provides a lithium-ion battery thermal runaway gas processing device, including a gas collection module, a gas pretreatment module, and a gas processing module; the gas pretreatment module includes a pretreatment tank and a dilution gas tank; the gas collection module and the dilution gas tank are both connected to the pretreatment tank; the pretreatment tank is connected to the gas processing module; the initial state of the pretreatment tank is a negative pressure state; the connecting pipeline between the pretreatment tank and the dilution gas tank and the gas processing module is connected in series with a valve and a flow meter; the pretreatment tank is also provided with a pressure gauge; the thermal runaway gas is collected through the gas collection module and enters the pretreatment tank, and a cooling unit is also provided in the pretreatment tank. The present invention can collect the thermal runaway gas in the prefabricated cabin in an orderly manner, and transmit it to a safe location outside the prefabricated cabin for safe treatment such as dilution, inerting, cooling, decomposition, conversion, etc., and finally discharge it from the prefabricated cabin. The entire processing process is safe, stable, and efficient, and can avoid the accumulation of thermal runaway gas in the prefabricated cabin and reduce the risk of gas explosion.