43results about How to "Guaranteed long-term stable operation" patented technology

The invention discloses a bridge pile foundation stress nondestructive testing method and system, the system comprises a sensor arrangement module, a data acquisition module, a data transmission module, a data processing module, a data analysis module, a result display and early warning module, a calibration module, a verification module and the like, sensors are various in type and high in precision, data acquisition multichannel synchronization is realized, and transmission is stable and reliable. Various technologies are used for data processing to construct a model, and a result is visually displayed and pre-warned. The system is further provided with an environment monitoring and structure health assessment module, comprehensive and accurate detection is guaranteed through an innovative formula and method, and efficient operation of the system is guaranteed through cooperative work of all modules. Through multi-module cooperation and innovative design, bridge pile foundation stress high-precision detection, environmental factor analysis and structure health assessment are achieved. Early warning can be carried out in time, bridge safety is guaranteed, a scientific basis is provided for maintenance management, and the reliability and safety of bridge operation are improved.

The invention relates to the technical field of sewage treatment, and discloses a horizontal subsurface flow wetland, system and anti-clogging method.The horizontal subsurface flow wetland comprises a planting layer, a purifying layer, a stabilizing layer and partition plates, the planting layer, the purifying layer and the stabilizing layer are sequentially arranged from top to bottom, and the multiple partition plates are detachably arranged in the planting layer, the purifying layer and the stabilizing layer in the water flow direction; a plurality of water passing holes are formed in the partition plates, and the water passing holes in the adjacent partition plates are formed in a staggered mode in the height direction. The flow state of water flow in the horizontal subsurface flow wetland in the on-way direction can achieve changeable and reciprocating flow states such as low-medium-high, high-medium-low and medium-medium-medium, the wave type hydrodynamic flow state in the horizontal subsurface flow wetland unit is constructed, the controllable hydrodynamic flow state is beneficial to dynamically balancing the pollution load in the horizontal subsurface flow wetland, the overall blocking trend is reduced, and the flow state of the water flow in the horizontal subsurface flow wetland is stable. Therefore, the effect of purifying water quality is ensured.

The present invention belongs to the technical field of heat exchange equipment, and specifically relates to a tailless packaged heat pipe manufacturing process and a tailless packaged heat pipe manufactured by the same, and the tailless packaged heat pipe manufacturing process comprises the following steps: S1, preparing a mixture, S2, sintering; S3, pore making treatment; S4, making an anti-wetting coating; S5, heat diffusion; S6, welding an isolation net; S7, setting a getter; S8, preparing a head 1; S9, preparing a head 2; S10, making a gas barrier coating; S11, heat treatment; S12, making an anti-leakage layer. The tailless packaged heat pipe comprises a heat pipe, and the heat pipe comprises a heat pipe fitting, and a head 1 and a head 2 are respectively arranged at both ends of the heat pipe fitting, an isolation net is arranged inside the heat pipe fitting, an anti-wetting coating is arranged on the isolation net, a gas barrier coating is arranged on the head 1 and the head 2, and an anti-leakage layer is arranged outside the gas barrier coating. The present invention solves the problem of residual tail pipes existing in the manufacture of heat pipes and prolongs the service life of the heat pipes.

The invention provides an electric cracking furnace system and an electric cracking furnace system operation method. The electric cracking furnace system comprises an electric cracking furnace, a gas replacement module, an energy storage module and a torch module; the electric cracking furnace comprises a replacement gas cavity and an electric heating cracking cavity arranged in the replacement gas cavity; a replacement gas outlet of the replacement gas module is connected with a replacement gas inlet of a replacement gas cavity of the electric cracking furnace, and a replacement gas component detection inlet of the replacement gas module is connected with a replacement gas outlet of the replacement gas cavity of the electric cracking furnace; a feed port of the torch module is connected with an electric heating cracking cavity of the electric cracking furnace, and the torch module is used for receiving materials in the electric heating cracking cavity when the electric cracking furnace has abnormal working conditions; a high-temperature medium outlet of the energy storage module is connected with an electric heating cracking cavity of the electric cracking furnace, and the energy storage module is used for providing a high-temperature medium for the electric heating cracking cavity when the torch module receives materials in the electric heating cracking cavity. The electric cracking furnace system ensures long-period stable operation of the electric cracking furnace through the gas replacement module, the energy storage module and the torch module.

The utility model provides a backflow type miniature artificial wetland system which is provided with an accommodating cavity formed by walls, and the accommodating cavity is divided into an adjusting tank unit, a first-stage vertical flow wetland unit, a second-stage vertical flow wetland unit and a backflow tank unit which are adjacent in sequence through a plurality of partition plates, an inner-layer bottom plate of the containing cavity is provided with a slope inclining downwards in the direction from the adjusting tank unit to the backflow tank unit, a first cover plate is installed at the top of the adjusting tank unit, a second cover plate is installed at the top of the backflow tank unit, and the first cover plate and the second cover plate are connected to the wall body in a turnover mode. According to the utility model, a plurality of units are sequentially separated and connected, so that the artificial wetland is small in occupied area and efficient in treatment, and the pollutant removal capacity of the wetland is improved.

The invention discloses a sewage staged treatment and recycling system based on multistage regulation and storage and intelligent monitoring. The sewage staged treatment and recycling system is characterized by comprising a regulation tank, a lifting pump, a multistage anaerobic biological filter, a multistage drop weir, a soil infiltration bed, a biological deodorization facility, an intelligent monitoring assembly, a console assembly, a multistage recycling assembly and the like. Rural domestic sewage is treated through the multi-stage anaerobic biological filter, the multi-stage drop weir and the soil infiltration bed, odor generated by anaerobic fermentation is purified through the biological deodorization facility, and the fecal coliform soft measurement value of effluent in each process link is monitored in real time through the intelligent monitoring assembly. And in cooperation with the console assembly and the multi-stage recycling assembly, the recycled water in different treatment stages is recycled to different irrigation objects, so that stage treatment and stage utilization of the sewage are realized.

The invention discloses an intelligent detection system and method for coating color flaws and defects, and the method comprises the steps: selecting a standard sample, and creating a color code model based on a machine vision system; stacking and feeding, and conveying to a visual inspection station one by one; coating image information of all products in each tray is sequentially collected based on a machine vision detection system; feature parameters in the image information are extracted, and color flaws and defects of each to-be-detected product in each tray are compared and judged according to a color code model; marking unqualified products, and outputting a judgment result; and stacking and blanking. According to the invention, accurate quantification of coating colors of industrial products is realized, the defect of subjective judgment of human eyes is avoided, the detection efficiency and the defect identification precision are high, the manual dependence is reduced, the operation is convenient, mass production and full detection can be realized, and the pain point that manual detection and spectrograph detection cannot adapt to mass production is solved; and all microscope base product detection data in the corresponding charging tray can be called by identifying the identity information of the charging tray through the two-dimensional code, so that whole-course traceability is realized.

The present application relates to high ammonia nitrogen wastewater treatment technical field, especially in one kind of integrated autotrophic denitrification device and method, wherein, one kind of integrated autotrophic denitrification device includes: pretreatment component, short path nitrification component, anaerobic ammonia oxidation component, collection and sludge discharge component, process insulation component, identification monitoring component, identification and determination component;The identification and determination component is analyzed according to the real-time image of the anaerobic ammonia oxidation bacteria distribution obtained and issues corresponding adjustment signal, or, alarm signal, so that the operation parameters of the determining device each component are adjusted accordingly.The present application provides a kind of short path nitrification and anaerobic ammonia oxidation combination mode, realizes partial short path nitrification, solves the accumulation problem of anaerobic ammonia oxidation bacteria, provides anaerobic ammonia oxidation bacteria for short path nitrification system, improves denitrification efficiency, and the device is self-regulating, strengthens the stability of device operation, so that the device can be long-term and stable operation.

The invention relates to the technical field of glass processing, and particularly discloses a glass laser cutting internal cracking device and method.The glass laser cutting internal cracking device comprises a base, and an internal cracking tool on the base is mainly composed of a pressing mechanism, an internal cracking mechanism and a stripping mechanism; glass is placed on the internal cracking jig, the internal cracking jig is heated and heats the glass to the required cracking temperature through heat conduction, the lower pressing mold of the stripping mechanism supports the lower surface of waste, the upper pressing mold of the lower pressing mechanism slowly pressurizes the upper surface of the glass waste, and meanwhile the stripping mechanism slowly descends; cooling the lower pressing mold and the upper pressing mold by using a cooling liquid, and refrigerating and cooling the glass waste through heat conduction, so that the glass finished product expands after being heated, the waste is contracted after being cooled, and the glass waste is separated from the peripheral finished product to complete splitting; the problems that the glass inner hole cracking efficiency is low and the edge breakage yield is low are solved, drilling separation treatment does not need to be carried out on the glass, dust is not generated in the whole glass machining process, and dust pollution to the glass and equipment is avoided.

This invention discloses a rotary jet suction dredging device, comprising a floating platform on which a vacuum jet pump connected to a drive mechanism and a guide mechanism is mounted; the drive mechanism includes two mutually perpendicular hydraulic telescopic rods, one end of which is hinged to the floating platform, and the other end of which is connected to the side wall of the vacuum jet pump via a universal joint; the guide mechanism includes inner and outer guide sleeves fitted around the vacuum jet pump, the inner guide sleeve and the vacuum jet pump being connected via coaxial left and right rotating shafts, and a coaxial front and rear rotating shaft passing through the outer guide sleeve, one end of which is connected to the inner guide sleeve, and the other end of which is connected to the floating platform, with the front and rear rotating shafts perpendicular to the left and right rotating shafts; the outer guide sleeve is provided with front and rear clearance grooves to accommodate the passage of the inner guide sleeve; the vacuum jet pump is connected to a suction head, a high-pressure air supply pipe, and a sludge conveying pipe. This invention achieves dredging needs covering all water depths from shallow to deep water, with high dredging efficiency and safe and simple operation.

The utility model provides a thermal power generation tail gas purification device and belongs to the technical field of thermal power generation. Comprising a fixing frame, a first filtering assembly fixedly installed on the inner surface of the fixing frame, an air inlet communicating with the side surface of the first filtering assembly, a second filtering assembly fixedly installed at the end of the first filtering assembly, a photovoltaic assembly fixedly connected to the side surface of the second filtering assembly and a cover plate clamped to the surface of the second filtering assembly. The air outlet is communicated with the side surface of the second filtering assembly. Through the multi-stage filtering structure and the photovoltaic design, efficient purification and energy recycling of thermal power generation tail gas are achieved, pollutants with different particle sizes can be treated in a staged mode through the synergistic effect of the first filtering assembly and the second filtering assembly, and the filtering efficiency and the structural strength are remarkably improved through the design of the filtering pipes with the reinforcing layers and the special coatings; the photovoltaic assembly converts light energy into electric energy to be supplied to the system for operation, and the observation opening and the detachable cover plate facilitate real-time monitoring and maintenance.

The present application belongs to the technical field of wastewater sampling, in particular to a water body sampling device for industrial wastewater tracing, comprising a mounting part, a sampling mechanism, a detection mechanism, a wiping mechanism and a backflow mechanism; the mounting part comprises a buoyancy disc and a mounting box, the buoyancy disc is fixedly installed on the upper end face of the mounting box; the sampling mechanism comprises a control pump, a conveying pipe and a filter, the control pump is fixedly installed in the buoyancy disc, the filter is connected with the input end of the control pump, and the conveying pipe is connected with the output end of the control pump; the detection mechanism comprises a carrier and a sensing plate, the sensing plate is obliquely installed on the outer wall of the carrier, and the carrier is fixedly installed on the inner wall of the buoyancy disc; the wiping mechanism comprises a sliding block and a wiping layer, the sliding block is slidingly arranged on the outer wall of the carrier, and the wiping layer is elastically arranged on the bottom of the sliding block; the backflow mechanism comprises a storage cylinder and a backflow pipe; through the cooperation of the above structure, the accuracy and reliability of the industrial wastewater tracing data are improved, and the online continuous sampling and detection mode truly meets the high-precision requirement.

This invention relates to the field of catalysis, and discloses a bilayer gradient acidic core-shell molecular sieve catalyst, its preparation method, and its applications. The bilayer gradient acidic core-shell molecular sieve catalyst comprises a ZSM-11 core layer and a BEA shell layer covering its surface; the acid strength of the ZSM-11 core layer is 0.40–1.20 mmol / g, and its average thickness is 0.5–3 μm; the acid strength of the BEA shell layer is 0.10–0.40 mmol / g, and its average thickness is 20–300 nm. This catalyst possesses a bilayer gradient acidic core-shell structure. When applied to the catalytic synthesis of tert-butylamine from isobutylene or its precursors (alcohols / ethers), it can improve single-pass conversion while maintaining high selectivity, and significantly reduce the carbon deposition rate and bed pressure drop growth, achieving long-term stable operation.

The application discloses a kind of mechanical arm wireless energy transmission method and system with direction neutralization strategy, it is related to wireless energy transmission technical field.Passive sensing module receives magnetic field signal and combines node feedback, extract node three-dimensional coordinate, direction and energy state, construct three-dimensional space layout diagram;Low-power intelligent control module judges energy supply scene accordingly, single-source scene calculates the optimal alignment posture of coil, multi-source scene divides energy supply area by clustering, calculates geometric center and adjusts direction according to node energy, power weight, avoids barrier scene and selects suboptimal path without shelter;Control module issues instruction to mechanical arm servo system and coil driving module, adjusts coil to target posture and structure;Compare data with optimal value, low-power node is preferentially stored energy, and energy sufficient node is promptly corrected posture.The method improves transmission efficiency and energy supply reliability by passive sensing, direction neutralization strategy and dynamic correction, adapts to the demand of multi-scene wireless energy transmission.

A polling loop control method and system, an electronic device, and a storage medium, relating to the technical field of automatic device control. The method comprises: receiving operating state data of a unit; screening out a non-operating unit on the basis of the operating state data; performing timing polling and fault polling on the non-operating unit to determine a polling starting unit; and rotating a unit in an operating state on the basis of the polling starting unit, setting a timing polling mechanism and a fault polling mechanism, and automatically rotating an operating device.

A denitration apparatus, comprising a denitration reactor, an inlet duct, air heating tubes, an ammonia vaporizer and an ammonia injection tube, wherein the denitration reactor comprises a flow channel through which combustion flue gas flows and a catalyst layer located in the flow channel, the inlet duct comprises a flow path configured to lead the combustion flue gas to the catalyst layer, the air heating tubes are placed in the flow path of the inlet duct and configured to warm air passing through an inside of the air heating tube using thermal energy of the combustion flue gas, a high-temperature air conveying tube configured to convey the air warmed by the air heating tube and an ammonia supplying tube configured to convey ammonia are connected to the ammonia vaporizer, the ammonia is mixed with the warmed air in the ammonia vaporizer to warm the ammonia, and the ammonia injection tube is configured to inject the ammonia warmed in the ammonia vaporizer into the flow path of the inlet duct through the ammonia injection tube to mix the warmed ammonia with the combustion flue gas.

This utility model relates to the field of wire and cable technology and discloses a high-strength, tensile-resistant, and wear-resistant wire, including a wear-resistant sheath. Spherical protrusions are fixedly connected to the surface of the wear-resistant sheath, and reinforcing strips are fixedly connected to the inner cavity of the sheath. This utility model significantly improves the dynamic durability and resistance to mechanical damage of the wire through a multi-layer composite structure design. The three-layer composite sheath, combined with the surface spherical protrusions, forms a gradient wear-resistant system, improving wear resistance compared to traditional single-layer sheaths. Simultaneously, the aramid galvanized steel wire braided structure of the inner support layer and the anti-slip texture within the insulation layer's holes form a three-dimensional interlock, solving the problem of interlayer slippage caused by repeated bending. The multi-strand tinned copper wire strands in the conductor layer work synergistically with the reinforcing strips of the inner support layer, significantly increasing the wire's tensile strength at break and meeting the requirements of extreme working conditions. Furthermore, the precise engagement of the spiral protrusions and anti-slip textures effectively absorbs torsional stress, effectively improving the wire's service life.

The present invention relates to the field of caprolactam production, and discloses a purification method for preparing crude caprolactam by gas-phase Beckmann rearrangement, comprising the following steps: (1) removing solvent, water and light impurities from a mixed solution containing caprolactam prepared by gas-phase Beckmann rearrangement to obtain crude caprolactam; (2) mixing the crude caprolactam with a crystallization solvent for primary crystallization to obtain a primary crystallization product and a primary crystallization mother liquor; (3) mixing the primary crystallization product with the crystallization solvent for secondary crystallization to obtain a secondary crystallization product and a secondary crystallization mother liquor, and returning the secondary crystallization mother liquor to step (2) as at least part of the primary crystallization solvent; (4) subjecting the secondary crystallization product to hydrogenation reaction. The purification method not only omits the step of removing heavy impurities, but also reduces the quality requirements for crude caprolactam prepared by gas-phase Beckmann rearrangement, and can obtain high-quality caprolactam without significantly increasing the consumption of circulating solvent.

The utility model relates to the field of monitoring instruments, and discloses a less-maintenance atmospheric waveguide detection device, which comprises a base fixed on the ground and fixedly connected with a mounting frame; the storage mechanism is fixedly connected to one side of the mounting frame, and the bottom of the storage mechanism is connected with an extension plate fixedly connected with the storage mechanism; the collecting device is arranged on one side of the mounting frame, the bottom of the collecting device is connected with a follow-up mechanism, and the follow-up mechanism is matched with the extension plate. The device can be stored in a strong wind and rain environment, safety of the device is guaranteed, meanwhile, drying work is achieved, the service life of the whole device is further guaranteed, maintenance of personnel is reduced, and the working efficiency is improved. And long-acting and stable operation of work is ensured.

The utility model relates to the technical field of antioxidant production, and discloses a filter device for antioxidant production, which comprises a filter shell, a support structure, an inlet pipeline, an outlet pipeline and a filter bag, and an antioxidant enters the filter bag in the filter shell through the inlet pipeline to be filtered. An adsorption cylinder for pretreatment of a pretreatment antioxidant is arranged on the inner wall face of the filter bag, the adsorption cylinder is cylindrical, the surface of the adsorption cylinder is in a honeycomb shape, and the adsorption cylinder and the inner wall are fixed in a detachable connection mode. Tiny impurities and peculiar smell can be efficiently adsorbed, and the purity of the antioxidant is improved. Meanwhile, the adsorption barrel and the filter bag are detachably connected through the top connecting ring and the first clamp, rapid replacement is facilitated, long-term stable operation of the whole filter device is facilitated, and continuity and stability of the antioxidant production process are guaranteed.

The invention relates to the technical field of data acquisition and processing, in particular to an acquisition and transmission system based on a low power consumption LoRa-NB wireless gateway, which comprises a sensing module, an edge operation module, a data collection module, a central processing module and a database, according to the invention, a plurality of transmission mechanisms are combined, and the system can dynamically select a transmission strategy according to the priority of data and network conditions. Under the condition that the network quality is unstable or a plurality of high-priority data packets exist, a balanced transmission mechanism can ensure that key data are transmitted preferentially and with low delay; real-time pressure and flow data abnormity sensing is carried out through an edge operation module, through real-time monitoring of all preset positions, pressure and flow abnormity conditions are accurately judged and marked, and early warning is triggered in time; further feature extraction and calculation are completed through the central processing module, and distribution features of pressure and flow data are deeply analyzed.

The invention relates to the technical field of refrigeration house equipment, in particular to an intelligent storing and taking device which comprises a ground walking guide rail used for supporting and guiding a stacking mechanical arm to move front and back in an intelligent refrigeration house, and the ground walking guide rail comprises a first guide rail truss, a first servo motor, a first gear, a first rack and a first position sensor; the stacking mechanical arm guide rail is installed on the ground walking guide rail and used for supporting and guiding the stacking mechanical arm to move up and down, and the stacking mechanical arm guide rail comprises a second guide rail truss, a second servo motor, a second gear, a second rack and a second position sensor; and the stacking mechanical arm is mounted on the stacking mechanical arm guide rail and used for executing storage and taking operation of the samples. According to the intelligent storing and taking device, through the three-stage precision transmission design of the ground walking guide rail, the stacking mechanical arm guide rail and the stacking mechanical arm, three-dimensional automatic positioning and storing and taking of samples in the refrigeration house are achieved, manual intervention is not needed, the working efficiency is greatly improved, and the risk of human errors is reduced.

The invention belongs to the technical field of environmental simulation, and discloses a connecting structure of a refrigerant pipeline and a box body, a mounting method and an environmental test box. A box body of the connecting structure comprises an inner wall, a heat preservation layer and an outer wall which are sequentially connected, a refrigerant pipeline comprises a refrigerant pipe and a protection assembly, the refrigerant pipe penetrates through the box body and is connected with a heat exchange assembly in the box body and a refrigeration assembly outside the box body, and the protection assembly penetrates through the box body and wraps the refrigerant pipe. One end of the protection assembly is fixedly welded to one of the inner wall and the outer wall, and the other end of the protection assembly is fixedly glued to the other one of the inner wall and the outer wall. According to the installation method, the protection assembly is welded to the inner wall, then the heat preservation layer and the outer wall are installed in sequence, and after the refrigerant pipe and the refrigeration assembly are welded, the protection assembly and the outer wall are glued. The problems that gaps are easily generated due to vibration at the position where the refrigerant pipe penetrates through the box body, and a heat preservation layer loses heat preservation performance due to welding high temperature are solved, heat preservation layer failure, air leakage and moisture invasion are prevented, stable operation of the refrigerant pipe is guaranteed, and stability and accuracy of the temperature in the box body are maintained.

The invention provides a project data management system and method.The system comprises a cloud module, a master control module, a branch management module and a monitoring module which are sequentially connected in series, every two adjacent modules connected in series are interactively connected, the cloud module is interactively connected with the branch management module, and the monitoring module sends data to the cloud module; and the branch management module receives monitoring data of the monitoring module on the multiple sites, preprocesses the monitoring data, gathers the monitoring data and sends the monitoring data to the master control module. The problem that the processing response speed is low due to the fact that the master control module needs to receive and process more data can be avoided, and long-term stable operation of the project data management system is facilitated; according to the invention, monitoring can be carried out at a local site to realize quick response, and convenient observation and monitoring can be realized at a master control remote end to carry out quick resource regulation and control, so that the accuracy of equipment abnormity judgment can be improved, and the possibility of misjudgment is reduced.

The utility model discloses a flat gate valve with a supporting assembly, which relates to the technical field of flat gate valves and comprises a gate frame, the top of the gate frame is fixedly connected with a supporting frame, the top of the supporting frame is provided with a through groove, a fixing frame is fixedly connected in the through groove, the top of the fixing frame is fixedly connected with a fixing frame, and the top of the fixing frame is fixedly connected with the supporting frame. A telescopic groove is formed in the bottom of the fixing frame, a telescopic block is slidably arranged in the telescopic groove, a threaded groove is formed in the top of the telescopic block, the fixing frame is provided with a driving mechanism for driving the telescopic block to move, a gate is fixedly connected to the bottom of the telescopic block, and the bottom of the gate penetrates through the gate frame and extends inwards. And two supporting mechanisms are arranged on the two sides of the gate in the gate frame. Water pressure impact is effectively buffered, sealing reliability is improved, accurate positioning and high-precision flow adjustment of the gate are achieved, and long-term stable operation is guaranteed.

The invention relates to an automatic sampling and cooling device for a modified asphalt production line, and relates to the technical field of asphalt production, the automatic sampling and cooling device comprises a frame body, a pneumatic angle seat sampling device is arranged on the frame body, the pneumatic angle seat sampling device comprises an outer shell, an opening and closing plate, a first piston and an air cylinder, a quantitative sampling cavity is arranged below the opening and closing plate, and a second piston is arranged below the outer shell. A rotary sample receiving and cooling device is further arranged on the frame body, the rotary sample receiving and cooling device comprises a motor, a rotating rod, a circular metal disc and a fan, a flow guide pipe is communicated with the interior of the first piston, and circular grooves distributed in an annular array are formed in the circular metal disc. The pneumatic angle seat sampling device is matched with the non-return assembly and the closing assembly, so that whole-process sampling automation and quantitative accurate control are realized, closed quantitative sampling can be completed without manual operation, the risk of high-temperature scalding is avoided, the problem of unstable manual sampling amount is solved, and the sampling efficiency is improved.

The invention discloses an explosion-proof device for an underground coal mine. The explosion-proof device comprises a base; the suction device comprises a suction cylinder mounted on the base, a column frame is mounted on the suction cylinder, and an adsorption device is further arranged in the column frame; the early warning device comprises a plurality of side shell covers and an elliptical filter cylinder, the side shell covers are distributed along the circumference of the outer side of the column frame, opposite outer filter holes and inner filter holes are distributed in the cylinder wall of the elliptical filter cylinder, the inner filter holes are covered with the side shell covers, suction ports used for communicating the column frame with the inner filter holes are formed in the side shell covers, and a mist spray pipe is arranged at the axis of the elliptical filter cylinder; a cleaning mechanism is arranged on the mist spraying pipe, a monitoring box used for collecting pulverized coal is arranged at the lower end of the side shell cover, a liquid inlet pipe connected with the mist spraying pipe is arranged in the monitoring box, the accuracy and reliability of abnormal judgment of the coal dust concentration are improved, and concentration monitoring and trend early warning are achieved.

The invention discloses an impeller design method for a low-specific-speed fire pump, which comprises the following steps of: calculating parameters of an impeller by adopting given design parameters of the fire pump, and obtaining the thickness delta 2 of an outlet side of the impeller by calculating an outlet displacement coefficient psi 2 of the impeller so as to increase the thickness delta 2 of the outlet side, so that a lift curve is suddenly reduced; noise and vibration, caused by the curve hump phenomenon, of the fire pump are effectively eliminated, the safety and reliability of the fire pump are improved, meanwhile, the outlet width b2, the outlet placement angle beta2 and the blade wrap angle # imgabs0 # of the impeller are determined within a certain range, so that the parameters of the impeller have the adjusting space, the outlet width b2 and the outlet placement angle beta2 are increased, and therefore the impeller can be adjusted conveniently. When the blade wrap angle # imgabs 1 # is reduced, the manufacturing difficulty of the impeller can be effectively reduced, the manufacturing cost is reduced, further, the impeller design method for the low-specific-speed fire pump can reduce diffusion loss in an impeller runner, and the efficiency of the impeller is effectively improved; and the pump shaft power is reduced, energy is effectively saved, and long-term stable operation of the pump is facilitated.

The application discloses a hypoxic response reaction evaluation method based on heart rate deceleration force and HRV dynamic evaluation, and relates to the field of biomedical signal processing. The method synchronously collects electrocardiogram signals and environmental and blood oxygen parameters to dynamically correct the risk baseline; frequency domain, time domain and heart rate deceleration force characteristics in the electrocardiogram signals are extracted, and a double-channel cross determination logic is established; the determination result and the current blood oxygen saturation are input into an edge lightweight neural network to infer and output a risk stratification; according to the stratification result, a wearable actuator is controlled to start multi-target point stratified sequential stimulation containing heat and vibration, and an individualized heat therapy prescription is adaptively updated based on an intervention effectiveness index, so that the double-channel collaborative control of oxygen therapy and heat therapy is finally realized. The application effectively solves the defects of traditional early warning lag and the inability to dynamically correct in a network-free environment, constructs a closed loop from accurate monitoring to multi-target point collaborative intervention, and significantly improves the adaptability and anti-risk ability of the organism to the hypoxic environment.

Disclosed are a frequency modulation method, device and system based on a new energy support machine and an energy storage device, and a new energy field station. The method comprises: acquiring a system frequency offset value; determining a frequency modulation scheme for the new energy support machine and / or the energy storage device according to the system frequency offset value; generating a frequency modulation instruction for the new energy support machine and / or the energy storage device according to the frequency modulation scheme, so that the new energy support machine and / or the energy storage device execute a corresponding frequency modulation instruction and modulate the system frequency. The method has high regularity, flexibility in rule adjustment and good real-time performance. When the system frequency of a power grid fluctuates, a new energy support machine with higher durability is selected to support the power grid. The electrochemical energy storage device with poorer durability is selected to support the power grid only when the frequency fluctuation of the system is excessive, thereby reducing the number of times the energy storage device is used, realizing the safe operation of the energy storage device, and improving the use safety of the energy storage device.