222 results about "Ventilation volume" patented technology

The invention discloses a tunnel oxygen supply control method based on multi-parameter coordination, and relates to the technical field of tunnel construction, and the method comprises the steps: constructing a multi-source environment monitoring data set, training a target ventilation quantity prediction model fused with a high-altitude correction coefficient based on the data set, and outputting an initial target ventilation quantity and an oxygen supply parameter; generating a pre-regulation instruction based on the initial target ventilation quantity and the oxygen supply parameters, simulating an instruction execution process through a digital twin virtual simulation model, and outputting oxygen supply evaluation parameters of oxygen content distribution, wind pressure loss and energy consumption of each block of the tunnel; constructing a tunnel oxygen supply evaluation model, and comparing oxygen supply evaluation parameters obtained by simulation with a safety threshold; and executing the formal adjustment instruction. Through multi-dimensional sensing treatment, high-altitude self-adaptive calculation, digital twinborn simulation verification, multi-scene parameter optimization, multi-device collaborative linkage and model dynamic evolution technologies, the breakthrough of tunnel oxygen supply from static experience control to dynamic precise intelligent regulation is realized.

The utility model relates to the technical field of elevators, in particular to an elevator car ventilation device capable of adjusting ventilation quantity, which comprises a car, a plurality of air outlet holes a which are distributed at equal intervals front and back are arranged on the middle lower portions of the left side and the right side of the inner wall of the car, and a plurality of air outlet holes b which are distributed in a matrix are arranged on the left side and the right side of the inner wall of the car and located above the air outlet holes a. Adjusting assemblies are arranged on the left side and the right side of the inner wall of the lift car correspondingly, each adjusting assembly comprises two L-shaped fixing vertical plates which are symmetrically arranged front and back, a shielding plate is slidably connected between the two L-shaped fixing vertical plates, and the position, close to the middle of the top edge, of the outer side of the shielding plate is in threaded connection with a pressing bolt. According to the elevator car ventilation device capable of adjusting the ventilation quantity, the opening and closing states of the air outlet hole b can be flexibly adjusted through the baffle plate in the adjusting assembly, so that the air flow is controlled, passengers can adjust the ventilation intensity according to actual requirements, and the situation that passengers feel uncomfortable due to large air flow in winter or under other special conditions is avoided.

The invention provides an air purification filter element control method and system based on environment awareness, and the method comprises the steps: collecting environment parameter data of a to-be-purified space and working state data of purification equipment, extracting the spatial and temporal change characteristics of the pollutant concentration in the environment parameter data, and generating environment characteristic data; based on the ventilation quantity and the environment characteristic data in the working state data, calculating the mass flow of each pollutant passing through the filter element, and performing weighted correction on the mass flow through a preset load coefficient to obtain a current load value; cumulative calculation is conducted on the load history data, the pressure difference distribution data and the current load value, and filter element service life parameters are obtained; target operation parameters are determined based on the filter element service life parameters and the environment parameter data, and a fan and a valve of the purification equipment are adjusted; according to the method, accurate evaluation of the state of the filter element is realized through multi-point environmental perception and load accumulation calculation, and dynamic regulation and control are performed by combining the environmental pollution degree and the service life of the filter element, so that the purification efficiency is improved and the service life of the filter element is prolonged.

The invention discloses an efficient heat dissipation high-voltage cabinet, and relates to the field of high-voltage cabinets. Through the cooperative operation of the heat dissipation fan at the bottom of the cabinet body and the ventilating fan at the top of the cabinet body, hot air and dust can quickly enter the air guide cavity through the long groove and then are exhausted through the ventilating fan, the flowing speed of air in the cabinet is increased, the heat dissipation efficiency is greatly improved, and the damage of high temperature to the high-voltage cabinet is effectively reduced through the efficient heat dissipation mode; meanwhile, the cleaning mechanism can automatically clean the filter screen, the cleaning brush can be driven by the driver to ascend, descend, rotate and transversely reciprocate, floating dust on the surface of the filter screen is cleaned in an all-dimensional mode, impurities are adsorbed, when the ventilator rotates reversely, airflow further blows off dust adsorbed by the filter screen, the filter screen is kept smooth all the time, and the stable ventilation quantity is maintained; therefore, the problems of reduced ventilation sectional area and increased airflow resistance caused by blockage of the filter screen are avoided, continuous and efficient heat dissipation of the high-voltage cabinet is ensured, frequent manual cleaning of the filter screen is not needed, and the labor cost and the maintenance time are saved.

The invention provides an underground coal mine ventilation control method and device, electronic equipment and a storage medium, and belongs to the technical field of mine ventilation. The method comprises the steps that the type and concentration characteristics of harmful gas in a target area are determined according to data collected by a biosensor array; determining time sequence data of the harmful gas according to the concentration of the harmful gas, and determining a target concentration change rate of the harmful gas according to the time sequence data; according to the concentration of the harmful gas, the target concentration change rate and the current underground acoustic wave characteristics of the coal mine, the target air volume of the target area is determined; according to the target air volume of the target area, the ventilation resistance of the target area and the current opening degree of the ventilation valve, the opening degree of the ventilation valve is controlled, and the ventilation air volume is determined. According to the coal mine underground ventilation control method and device, the electronic equipment and the storage medium, the ventilation quantity can be accurately and timely adjusted.

The application provides a kiln ventilation regulation device, comprising: a ventilation pipe; a protection shell is fixedly installed on the surface of the ventilation pipe, a connecting shell is fixedly installed on one side of the protection shell, a supporting plate is fixedly installed in the inner cavity of the ventilation pipe, a supporting rod is fixedly installed on the top of the supporting plate, and a supporting disc is fixedly installed on the top of the supporting rod. Through the design of the regulation assembly, the regulation assembly adopts a worm, a worm wheel, a rotating gear and an adjusting disc transmission structure, worm and worm wheel transmission improves stability, the rotating gear and the teeth can realize precise adjustment of the angle of the adjusting fan blade, the ventilation volume control error is reduced, the precision is improved compared with traditional manual adjustment, multiple adjusting fan blades are linked through adjusting rods and adjusting discs, the ventilation pipe inner cavity ventilation cross-sectional area can be changed synchronously, the airflow deflection problem of traditional single baffle adjustment is avoided, the kiln working condition rapid change demand is adapted, a sealing strip is arranged on the top of the adjusting fan blade, and heat loss caused by traditional baffle gap air leakage is avoided.

The utility model provides an energy-saving building window body with an adjustable ventilation channel, and relates to the technical field of building window bodies. The energy-saving building window with the adjustable ventilation channel comprises a window body and further comprises a ventilation groove, the ventilation groove is formed in the window body, a plurality of wind shields are rotationally installed in the ventilation groove, a movable groove is formed in the window body and located below the ventilation groove, a plurality of worm wheels are rotationally installed in the movable groove, and the worm wheels are rotationally installed in the movable groove. The top ends of the multiple worm wheels penetrate through the top of the movable groove and are coaxially connected with the multiple wind shields correspondingly, and worms are installed on the sides, located in the movable groove, of the multiple worm wheels in a meshed mode. The driving assembly is located in the window body and used for driving the worms to rotate; the ventilation quantity and the wind direction of the ventilation groove can be conveniently adjusted by a person, operation is easy and rapid, use by the person is facilitated, ventilation can be guaranteed while sunshade is achieved, and the person can conveniently store the sunshade curtain.

The utility model discloses a balcony guardrail, which relates to the technical field of house building, and comprises a vertical rod, a cross rod, a first punching plate and a second punching plate, the vertical rod is slidably installed on the cross rod, the first punching plate is connected with the cross rod, a first ventilation position is formed on the first punching plate, the second punching plate is connected with the vertical rod, and the second ventilation position is formed on the second punching plate. The first punching plate and the second punching plate are arranged in parallel, a second ventilation position is formed on the second punching plate, and the first ventilation position and the second ventilation position are arranged in a staggered mode. According to the balcony guardrail, the first punching plate and the second punching plate are arranged to achieve safety protection, meanwhile, the first ventilation position and the second ventilation position are formed in the first punching plate and the second punching plate respectively, and the ventilation quantity is adjusted by adjusting the overlapped and aligned area of the first ventilation position and the second ventilation position; therefore, the balcony guardrail can simultaneously realize safety protection and indoor ventilation.

The application discloses a layout design method and device for a ventilation pressure regulating facility of an underground water storage cavern, and the method comprises the following steps: determining layout parameters of a tunnel group of the water storage cavern; constructing a water power simulation model of the water storage cavern composed of the tunnel group based on a one-dimensional water flow motion control equation; solving a distribution of a water hydraulic characteristic value along a path under a non-constant flow condition according to the water power simulation model, determining a space-time distribution of a tunnel section in a pressurized state and a non-pressurized state, judging a required ventilation amount according to the space-time distribution, and initially drafting a layout scheme of a cavern ventilation pressure regulation; adjusting the layout parameters, checking and analyzing whether the layout scheme of the ventilation pressure regulating facility is reasonable under the non-constant flow operation condition, and correcting the layout parameters of the water power simulation model established based on the one-dimensional water flow motion control equation according to a calculation result; and repeating the steps of adjusting, checking and correcting until a reasonable layout scheme of the ventilation pressure regulating facility is constructed.

This invention discloses an adaptive cross-section flexible ventilation duct and method. Currently, ventilation ducts used in tunnel construction are mostly in regular geometric cross-sections such as circles and rectangles. This invention, located within a ventilation duct area on one side of the tunnel roof, includes a flexible duct. The cross-section of the flexible duct is a closed area formed by its lower, right, and upper boundaries. Airbags are provided on the outer surfaces of the lower and right boundaries. Each airbag includes multiple spaced longitudinal and transverse airbags. The longitudinal airbags are positioned along the tunnel length, and the transverse airbags are perpendicular to the longitudinal airbags. The two ends of each transverse airbag are connected to two adjacent longitudinal airbags. This invention employs an adaptive shape structure. During ventilation, the boundary of the flexible duct coincides with the area where the duct can be installed, maximizing space utilization, creating a larger ventilation area, thereby achieving a larger ventilation volume, and ultimately achieving a longer ventilation distance than circular ventilation ducts.

The utility model provides a tracheotomy catheter respiratory capacity regulation and control device, which comprises an upper part, a lower part, a lower part and an upper part, the upper part is of a cylindrical structure and is arranged in a tracheotomy catheter, and a buckling brim is arranged at the top of the upper part and is buckled with the tracheotomy catheter; the lower part is of a cylinder structure, is fixedly arranged in the tracheotomy catheter and is movably connected with the upper part; one end of the respiratory capacity adjusting part is arranged on the top of the inner side of the lower part, and the other end of the respiratory capacity adjusting part is arranged on the inner side of the upper part through a clamping piece. According to the tracheotomy catheter, the upper part and the lower part which are of the cylindrical structure are installed at the tube opening of the tracheotomy catheter, the lower part is clamped on the tube wall of the tracheotomy catheter through the anti-skid layer, the superficial area of the respiratory capacity adjusting part is controlled by rotating the upper part, and therefore the ventilation capacity in the tracheotomy catheter can be accurately adjusted and controlled. The device is simple in structure and convenient to operate, and the respiratory capacity can be adjusted in real time according to specific requirements of patients.

The invention provides an optimization method and system for a marine engine room ventilation system, and relates to the technical field of analogue simulation, and the method comprises the steps: constructing a ventilation system simulation model of a marine engine room; according to the structure information and the working condition information of the ventilation system simulation model, determining the total heat dissipating capacity of the equipment; determining a reference ventilation quantity and a ventilation quantity area distribution table according to the total heat dissipation quantity of the equipment; setting the reference ventilation quantity and the ventilation quantity area distribution table into a ventilation system simulation model; performing fluid dynamic simulation on the ventilation system simulation model to generate a problem list; the optimal ventilation system structure parameters are optimized and determined through a swarm intelligence algorithm by taking weakening of hot spots, reduction of dead corner volume fraction reduction and weakening of a backflow path as targets. Hot spot areas in the cabin can be effectively weakened, the volume fraction of ventilation dead corners is reduced, the short-circuit backflow phenomenon is weakened, and the overall energy efficiency and design reliability of a ventilation system are remarkably improved while safe operation of equipment is guaranteed.

The utility model belongs to the technical field of pipeline conveying, and particularly relates to a powder conveying device which comprises a conveying pipe and a sedimentation supporting pipe, a negative pressure suction fan is arranged at the discharging end of the conveying pipe, the upper end of the sedimentation supporting pipe is fixedly connected to the conveying pipe, and the lower end of the sedimentation supporting pipe is supported on the horizontal plane. A discharging pipe is arranged on one side of the sedimentation supporting pipe, the conveying pipe is connected to the grate cooler through a hot air pipe, a ventilation pipe is arranged on the sedimentation supporting pipe, and a wind shield is arranged at the position of the ventilation pipe in an openable and closable mode. Hot air generated by heat exchange of the grate cooler is used for replacing a hot-air blower, due to the fact that the temperature of the hot air generated by the grate cooler is high, powder is prone to being excessively dried, the ventilation pipe is arranged to introduce natural air into the material conveying pipe for cooling, the size of the ventilation pipe shielded by the wind shield is adjusted according to the temperature measured by the material conveying pipe, and then the ventilation quantity is changed. And the air inlet amount can be controlled by adjusting the air baffle, and long-time overheating of the conveying pipe is avoided.

This invention discloses an intelligent ventilation and control system for hazardous waste containers, relating to the fields of ventilation systems and control technology. It aims to solve the technical problems of traditional hazardous waste container ventilation systems, such as low ventilation efficiency, high energy consumption, inability to dynamically adjust ventilation volume according to the hazardous waste status, and the tendency to lead to the accumulation of harmful gases or resource waste. The system includes: a container monitoring module, located inside and outside the container, for collecting environmental parameters; an intelligent ventilation execution module, used to coordinate with the ventilation and natural ventilation openings to adjust the ventilation state inside the container; a linkage control center, used to process monitoring data and generate control commands; and an energy supply unit, providing power to all modules of the system. This invention, through a dynamic strategy of "natural ventilation priority + mechanical ventilation assistance," accurately matches the ventilation needs of different hazardous wastes, solving the core problem of existing systems' inability to dynamically adjust according to the characteristics of hazardous waste and the real-time environment.

The blade angle adjustable ventilation device comprises a ventilation frame, positioning plates are vertically installed on the two sides of the ventilation frame, a supporting plate is fixedly installed on the upper portion of an inner cavity of the ventilation frame, blades are transversely installed below the supporting plate at equal intervals, a supporting shaft is fixedly installed at the center of the top of each blade, and the supporting shaft is fixedly installed on the lower portion of the inner cavity of the ventilation frame. The upper end of the supporting shaft penetrates through the supporting plate and extends to the position above the supporting plate to be fixedly provided with a gear, a gear ring is installed outside the gear in a meshed mode, and an adjusting block is fixedly installed in the middle of the front face of the gear ring. The angle of the blades can be conveniently and quickly adjusted by rotating the adjusting rotating disc, so that the ventilation quantity and the ventilation direction are flexibly controlled according to actual requirements, the practicability and the applicability of the ventilation device are greatly improved, the adjusting rotating disc with the adjusted angle can be locked and fixed through the arrangement of a locking rod and an annular fixing groove, and the practicability is high. The threaded rod is prevented from rotating under the influence of external force, and the ventilation effect stability is ensured.

The present invention discloses a multimodal fusion method for assessing the natural ventilation of a large atrium in an exhibition building. The method comprises: acquiring multimodal data, the multimodal data comprising meteorological time series parameters, a three-dimensional building point cloud and opening geometry parameters, and air conditioning and cooling parameters; inputting the multimodal data into a multimodal fusion neural network model to obtain a natural ventilation assessment result, the natural ventilation assessment result comprising the vertical temperature distribution of the atrium and the ventilation volume of each opening in the atrium; wherein the multimodal fusion neural network model comprises a meteorological time series feature extraction module, a building geometry encoding module, an air conditioning system parameter encoding module, a cross-modal feature fusion module, a vertical temperature field prediction module, and a ventilation volume prediction module. The present invention establishes a spatiotemporal collaborative perception mechanism for meteorological time series dynamics, building space topology, and air conditioning parameter features, breaking through the technical bottlenecks of traditional methods in terms of cross-modal feature space alignment and interaction efficiency.

The utility model discloses a refrigeration house ventilation device, which relates to the technical field of refrigeration house ventilation, and comprises a ventilation pipeline and a treatment box, the inside of the treatment box is rotatably connected with a filter plate, the inside of the filter plate is provided with a filter screen, and the inside of the treatment box is rotatably connected with a baffle on one side of the filter plate. Two self-locking motors are installed on one side of the treatment box, and the output ends of the two self-locking motors are fixedly connected with the filter plate and the baffle correspondingly. Compared with the prior art, the ventilation device has the advantages that the ventilation quantity can be conveniently adjusted through the rotary filter plate and the baffle mounted in the treatment box, meanwhile, water flow can be sprayed to the filter plate and the baffle under the action of the water pump and the spray head, the filter plate and the baffle can be conveniently and comprehensively washed in cooperation with rotation of the filter plate and the baffle, and the ventilation efficiency of the refrigeration house is improved. And dust and dirt attached to the upper surface are cleaned away, air pollution is prevented from being aggravated, manual cleaning of the filter plate and the baffle is replaced, and manpower is saved.

The invention belongs to the technical field of medical equipment, and particularly relates to intelligent anesthesia equipment capable of automatically regulating and controlling the anesthesia depth and a using method thereof.The intelligent anesthesia equipment comprises an anesthesia machine, and an evaporator and a gas mixing pipe are arranged in the anesthesia machine; the conveying part comprises an anesthesia pipe, the anesthesia pipe is communicated with a flow dividing pipe, the flow dividing pipe is communicated with a C-shaped pipe set, a ventilation pipe, a gas mixing pipe and a gas feeding pipe, and light blades are arranged in the gas feeding pipe; the monitoring part is arranged in the anesthesia machine; the adjusting part comprises a lifting rod, the lifting rod is connected with a blocking ring and a rotating ring, a lead screw and a sleeve rod are connected into the lifting rod, and a gear B is arranged on the sleeve rod; the driving part comprises a lifting frame, a limiting groove and a gear C are arranged on the lifting frame, the lead screw is connected with a gear D, and the loop bar is connected with a gear E. The system can monitor the minute ventilation volume of a patient in real time, judge the state of the patient according to the monitored data, adjust the concentration of anesthetic gas according to the state of the patient, and prevent the patient from being hurt by too deep or too shallow anesthesia.

The application discloses a kind of painting workshop environment quality prediction method and prediction model establishment method, the present application selects volatile organic compound concentration as painting workshop environment quality reference index, selects volatile organic compound concentration as dependent variable, spraying time, spraying distance, air flow rate as independent variable, establishes the multiple linear regression model of painting workshop environment quality, establishes neural network model, the fitting value of multiple regression model is used as the input of neural network model together with independent variable, constructs multiple linear regression-neural network combination model, according to painting working condition, the air quality in workshop is predicted using combination model, when volatile organic compound concentration in painting workshop reaches certain threshold value, it is necessary to carry out alarm and forced ventilation.The present application can accurately and quickly calculate volatile organic compound concentration in workshop by painting workshop environment quality prediction model, so as to adjust ventilation volume in time, protect construction personnel, save energy consumption.

The present disclosure provides a smoke exhaust system, a monitoring method, device, equipment and program product of the smoke exhaust system, the smoke exhaust system comprising: an extractor hood, an auxiliary fan and a camera; an air inlet of the auxiliary fan is communicated with an air outlet of the extractor hood through an exhaust duct; a front connecting section and a rear connecting section of a shell of the auxiliary fan are transparent; the camera is arranged below the auxiliary fan and is used for shooting images of the front connecting section and the rear connecting section to monitor oil stains attached to a wall surface. The present disclosure monitors the oil stains attached to the wall surface on the front connecting section and the rear connecting section of the auxiliary fan through the camera, calculates a wind capacity based on a change amount of the oil stains before and after a preset time period, evaluates a cleanliness according to the wind capacity, the larger the wind capacity is, the better the cleanliness is, the smaller the wind capacity is, the worse the cleanliness is, and the condition (such as a ventilation volume, the cleanliness, etc.) of the smoke exhaust system can be automatically monitored to determine whether cleaning needs to be immediately performed and to predict a remaining cleaning time to the next cleaning.

The present invention relates to an in-ear wearable device. The present invention provides an in-ear wearable device, comprising: a customized shell having a shell wall and an inner cavity, the customized shell comprising a first portion for being inserted into a user's ear canal and matching the shape of the ear canal and a second portion exposed to the external environment when the first portion is inserted into the ear canal; a panel; a vent, at least partially disposed in the customized shell, with the section of the vent disposed in the customized shell formed in the shell wall; and a ventilation volume adjustment device installed in the vent, the vent and the ventilation volume adjustment device at least partially constituting a ventilation channel isolated from the inner cavity, the ventilation channel being configured to fluidically connect the ear canal and the external environment when the user wears the in-ear wearable device, comprising an operating portion located on the second portion and exposed from the outer surface of the customized shell, and configured to enable manual adjustment of the ventilation volume of the ventilation channel through the operating portion to adjust the audio characteristics of the in-ear wearable device.

The invention discloses a purification type fresh air ventilator applied to a medical place, and relates to the technical field of ventilators, the purification type fresh air ventilator comprises a shell, an air draft unit and an air inlet unit are arranged on the two sides of the interior of the shell respectively, and a processing unit is arranged between the air draft unit and the air inlet unit; the two sides of the treatment unit are each provided with a filtering and cleaning assembly and a protection assembly. According to the device, a driving motor drives a reciprocating lead screw to rotate, a rectangular lead screw sleeve drives a connecting block and a cleaning brush to move, the surface of a filter screen is cleaned through the cleaning brush, it is guaranteed that the air exchange amount is stable, secondary pollution caused by accumulated dust is avoided, and the maintenance cost and the shutdown cleaning time of a product in the using process are reduced; and in the upward moving process of the connecting block, dust generated after cleaning can be extracted in an auxiliary mode through an air bag, an air inlet pipe, a collecting box and a collecting frame, the phenomenon that the dust drifts away in the shell is reduced, and the using effect of the product is further improved.

The invention discloses a plateau altitude self-adaptive compensation system and method for an emergency breathing machine. The plateau altitude self-adaptive compensation system comprises a sensing module, a control module, a power module, a gas circuit driving circuit, a man-machine interaction module, an execution module and an additional function module. Acquiring a plateau altitude self-adaptive compensation data set; the plateau altitude adaptive compensation data set comprises altitude height information, fan parameter information, atmospheric pressure information, airway pressure information, gas flow information and temperature information; training a preset fan drive control model by using the plateau altitude self-adaptive compensation data set to obtain an optimized fan drive control model; and processing plateau altitude self-adaptive compensation data to be processed by utilizing the optimized fan drive control model to realize plateau altitude self-adaptive compensation of the emergency breathing machine. The method can adapt to different altitudes and automatically compensate the influence of atmospheric pressure change on tidal volume and minute ventilation output precision.

The invention discloses a control method, a control system, a control device and a medium for a cooling triangular shutter, and relates to the technical field of indirect air cooling. The current flow speed, detected by a water flow sensor in a cooling triangle, of circulating water in each pipe bundle and the current temperature, detected by a temperature sensor, of the circulating water in each pipe bundle are obtained; obtaining heat dissipation efficiency influence factor data of the cooling triangle; if the current flow speed is lower than the flow speed threshold value and / or the current temperature is lower than the temperature threshold value, the opening coefficient of the cooling triangular louver is calculated according to the current flow speed, the current temperature and the heat dissipation efficiency influence factor data; the target opening degree of the cooling triangular louver is determined according to the opening degree coefficient, and the opening degree of the louver is reduced to the target opening degree in the next control period; therefore, when the current flow speed and / or the current temperature are / is low, the opening degree of the shutter can be actively reduced, the ventilation quantity is reduced, heat loss is reduced, circulating water is effectively prevented from freezing, and reliable anti-freezing protection of the cooling triangle is achieved.

The present application relates to pig breeding equipment technical field, and disclose a kind of temperature control ventilation control energy-saving type piglet nursery pig house, including chassis, including chassis, the top of the both sides of chassis is fixedly connected with ventilation support, the top of ventilation support is fixedly connected with ventilation pipe, the both ends of ventilation pipe are fixedly installed with filter screen, the top of ventilation pipe is fixedly connected with air regulating duct.The space in the pig house is divided by protective fence, the effect that ventilation volume is proportional to the aggregation of piglet is realized, and respiratory diseases and other problems caused by poor ventilation in pig dense area are avoided;By installing fan in the air pipe, the ventilation effect in piglet dense area is strengthened, natural ventilation and mechanical ventilation are combined, and it is more energy-saving and environment-friendly;By adding temperature rising spiral in ventilation long groove, the wind blown after passing through air pipe becomes hot air by temperature rising, to avoid piglet from catching disease due to chilling in the process of winter ventilation.

The invention discloses a high-voltage winding and a dry-type transformer, and particularly relates to the technical field of dry-type transformers, the high-voltage winding comprises a winding coil, a partition plate and an adjusting assembly, the partition plate and the winding coil are coaxially arranged, the outer wall of the partition plate and the inner wall of the winding coil form a first air duct for cooling and ventilation, and the adjusting assembly is arranged in the first air duct; the adjusting assembly can divide the first air channel into a plurality of ventilation areas in the circumferential direction of the winding coil, and the adjusting assembly can adjust the ventilation quantity of the ventilation areas according to the temperature in the winding coil. The cooling effect is further improved by mixing part of the cold airflow with the heated airflow, and meanwhile, the ventilation quantity of a plurality of ventilation areas is adjusted through the internal temperature of the high-voltage winding, so that the problem that the overall working efficiency is influenced by inconsistent internal temperature rise of the transformer winding due to nonuniform internal temperature distribution of a single winding is prevented.

This utility model relates to the field of mine ventilation equipment technology, specifically to an improved adjustable filter window for mine ventilation safety. It includes a duct body and an adjustment connection unit. The adjustment connection unit includes multiple fan blades, multiple connecting shafts, multiple connecting plates, a movable frame, a track plate, a drive component, a filter assembly, and an installation assembly. In use, the duct body is inserted into the mine's air intake pipe and fixed using the installation assembly. To increase the airflow of the duct body, the drive component is activated, causing the movable frame to move backward within the track plate. During this process, the movable frame, in conjunction with the strip groove, pulls the connecting plate to rotate, causing the fan blades below the connecting shaft to open, increasing the airflow intake area. To reduce the airflow of the duct body, simply move the movable frame in the opposite direction, closing the fan blades and reducing the airflow intake area. This method allows workers to flexibly adjust the ventilation volume according to actual ventilation needs, effectively improving ease of use.

The utility model discloses an air volume measuring device for civil air defense engineering in the field of civil air defense engineering equipment, which comprises a cylinder body with two open ends, and is characterized in that a measuring mechanism and a linear driving mechanism are arranged on the outer side of the cylinder body, the measuring mechanism comprises a measuring rod extending into an inner cavity of the cylinder body, and the linear driving mechanism is connected with the measuring rod. The linear driving mechanism is used for driving the measuring rod to be close to or away from the center point of the cross section of the cylinder. According to the utility model, the measuring points can be changed, the average air volume value is calculated by measuring the ventilation quantity at different positions in the ventilation pipe for multiple times, and the accuracy is higher.

The invention relates to the technical field of pentane oil gas, in particular to a gasification method for pentane oil gas, which comprises the following steps: a liquid level meter detects the liquid level height of pentane oil stored in an oil storage bin and transmits the liquid level height to a data analysis module, and according to the liquid level height, an oil replenishing passage is determined to replenish pentane oil into the oil storage bin, or the ventilatory capacity of a ventilation module is preliminarily determined; the flow detection module detects the flow of output gas, the component analysis module detects the fuel gas proportion of the output gas, and the data analysis module verifies the ventilation capacity of the ventilation module according to the flow of the output gas and the fuel gas proportion, or judges that the pentane oil concentration is insufficient according to the liquid level height and the ventilation capacity; the temperature detection module detects the temperature of output gaseous fuel gas, and the data analysis module adjusts the heating power of the heating device according to temperature data. According to the invention, through a multi-module cooperative work mode, comprehensive monitoring and accurate regulation and control of the pentane oil gas preparation process can be realized.

The utility model discloses a high -efficient heat dissipation type intelligent low -voltage complete switchgear, including the cabinet body and the base of installing at the bottom of cabinet body, be equipped with heat abstractor in the cabinet body upper end, and the cabinet body upper end is equipped with ventilation mechanism, and heat abstractor includes fixed frame, drive motor, drive shaft, swing frame, rotation axis, a plurality of heat dissipation fan blade, a group of round bar, sliding block, push frame, transmission shaft and rotating rod, and ventilation mechanism includes ring cylinder, a plurality of pivot, a plurality of ventilation fan blade, a plurality of connecting plate, annular slide rail and rotating ring, the utility model has the advantages that through being equipped with heat abstractor in the cabinet body upper end, can swing reciprocating through push frame and push swing frame simultaneously when driving motor drives a plurality of heat dissipation fan blade to rotate heat dissipation, thereby makes a plurality of heat dissipation fan blade swing and blows, and the switchgear in the cabinet is more uniform in heat dissipation, and ventilation mechanism can be according to the temperature in the cabinet body, and the size of ventilation volume is automatically regulated through a plurality of ventilation fan blade, and convenient to use.