193 results about "Pipeline.air" patented technology

The invention relates to the technical field of air leakage big data analysis, in particular to a compressed air pipeline air leakage intelligent analysis system and method based on LLM. A plurality of monitoring nodes in a compressed air pipeline are analyzed, and data normal range parameters and adaptive acquisition frequency are preset for each node in the pipeline operation stage; the clear definition standard avoids misjudgment of original data due to fuzzy threshold values, then data noise is effectively reduced by analyzing the data synchronization degree of each monitoring node and intelligently repairing the problems of missing, deviation and the like, the repaired data better fits the actual operation state of the compressed air pipeline, the missed detection and mispositioning risks are reduced, and the reliability of the compressed air pipeline is improved. And finally fusing the data of the gas leakage node and the adjacent node to supplement multi-dimensional information, and optimizing the fusion data quality. The LLM model depends on high-quality fusion data, deep analysis is carried out in combination with compressed air pipeline multi-monitoring-node correlation characteristics and historical experience, deviation caused by data defects is reduced, and the accuracy of an intelligent air leakage analysis result is greatly improved.

The invention discloses a pipeline air column transient flow simulation method and system, and relates to the technical field of numerical simulation calculation, and the method comprises the steps: carrying out the equal interval division of a target pipeline according to a predetermined interval, and constructing a pipeline model of a plurality of nodes; different states of fluid in the pipeline are distinguished, and flow and pressure of pipeline nodes under different conditions are calculated through a control algorithm to predict behaviors of the fluid in the pipeline; and analyzing and calculating pipeline target data in future set time according to the constructed pipeline model and fluid behaviors in the pipeline, and performing pipeline gas column transient flow simulation. According to the method, the transient flow problem of the pipeline gas column can be well simulated by considering the gas thermodynamic characteristics, the precision of numerical simulation can be improved by combining a gas thermodynamic characteristic mechanism, possible engineering hidden dangers can be predicted and pre-judged in advance in an engineering design stage, and the safety of engineering design of a water delivery system is improved.

The invention discloses a tritium feeding system of a fusion device and a control method of the tritium feeding system, and relates to the technical field of controlled nuclear fusion device feeding, and the tritium feeding system comprises a negative pressure containing operation space and a tritium gas transmission pipeline located in the negative pressure containing operation space; the tritium gas transmission pipeline is located in the negative pressure containing operation space, and a gas storage device, a first pressure controller and a first pipeline barometer are sequentially arranged on the tritium gas transmission pipeline in the gas transmission direction of the tritium gas transmission pipeline; the gas storage device is used for storing gas in the tritium gas transmission pipeline; the first pressure controller is used for controlling the internal air pressure of the tritium gas transmission pipeline; the first pipeline barometer is used for detecting the pipeline air pressure at the front end of the injection valve; and the air storage device is provided with a second pipeline barometer for detecting the air pressure in the air storage device. Under a low-pressure working mode and a conventional pressure intensity working mode, the tritium feeding efficiency can be guaranteed, and efficient injection is achieved.

The utility model discloses a closed air test device which comprises a hub, an air bag is sleeved on the hub, the air bag is connected with the hub in a bonding mode, an original pipeline air inlet pipeline is arranged at the left end of the air bag and penetrates through the hub, an air bag air inlet pipeline is arranged on the hub, and the air bag air inlet pipeline penetrates through the hub. The air bag is arranged in the original pipeline, air is injected into the air bag through the air bag air inlet pipeline by the air compressor, the air bag is tightly attached to the original pipeline, and air pressure is controlled by the aid of the pressure gauge. Then the original pipeline is inflated through the air inlet pipeline of the original pipeline by the air compressor, the inflation amount is observed through the pressure gauge, and after the target pressure is reached, the valve on the air inlet pipeline of the original pipeline is closed, and the air check test is started, so that the device can be used in the air check test of hard pipelines such as ultraviolet curing pipelines and PE pipelines; and thus, the application range of the air check test device is expanded.

The utility model discloses a mounting component for natural compensation sections of a directly-buried steam pipeline, which relates to the technical field of heat supply of the directly-buried steam pipeline and comprises a prefabricated directly-buried steam heat preservation elbow and two natural compensation sections arranged at two ends of the prefabricated directly-buried steam heat preservation elbow, and fixing components are arranged on the two natural compensation sections. The two natural compensation sections are the same in structure and sequentially comprise a steam working pipeline, a pipeline heat preservation layer, a pipeline air layer and a pipeline outer protective sleeve which are coaxially arranged from inside to outside. The prefabricated directly-buried steam heat preservation elbow comprises a steam working hot-pressing elbow, an elbow heat preservation layer, an elbow air layer and an elbow outer protective sleeve from inside to outside. Therefore, according to the utility model, the offset of the natural compensation section can be carried out through a cold tightening means, and a part of the pipeline with overlarge displacement is cut off, so that the relative offset of the pipeline is reduced, the operation safety is improved, the engineering investment is saved, and the construction difficulty is reduced.

The utility model discloses a pressure pipeline air tightness detection device, which belongs to the technical field of pipeline air tightness detection devices and comprises a supporting rack, a pressurization driving mechanism, an air expansion plugging structure, a limiting support, a locking mechanism, a detection clamp and a sensor actuating mechanism. The pressurization driving mechanism is arranged on one side face of the supporting rack, the air expansion plugging structure is arranged on the supporting rack, and the pressurization driving mechanism is in driving connection with the air expansion plugging structure; the limiting support and the locking mechanism are arranged adjacently, and the limiting support is arranged between the detection clamp and the air expansion plugging structure. The detection clamp is arranged on the other side of the supporting rack relative to the pressurization driving mechanism, and the sensor action mechanism is arranged adjacent to the detection clamp and movably connected with the detection clamp. The air tightness detection device for the pressure pipeline solves the technical problem of how to carry out air tightness detection on a single-section gas pipeline.

The utility model relates to the field of detection devices, in particular to a liquid immersion type pressure pipeline air tightness detection device, which comprises a liquid immersion box, a corrugated main pipe, a lifting frame and an air tightness immersion mounting pipe, through a separation area formed by the wave impingement plate and the blocking lines, in combination with a built-in infrared sensor, bubble dynamic states are monitored in real time, subjective errors of naked eye observation are eliminated, tiny leakage is effectively recognized, the lifting frame is driven by the air cylinder to ascend and descend, the water pressure in the liquid immersion box can be accurately adjusted, and pressure impacts of different working conditions on a pipeline can be simulated. Meanwhile, the wave impingement plate and the stabilizing plate cooperate to reduce water flow fluctuation interference, the airtight soaking mounting pipe is subjected to steering adjustment and air bag floating ball self-adaptive positioning, rapid adaptation of different pipe diameters and mounting angles is supported, the operation complexity is reduced, an airtight sleeve and a branch sleeve form a multi-layer sealing structure, and the service life is prolonged. The pressurizing box is combined to control the air pump to dynamically compensate air pressure, misjudgment or equipment damage caused by sudden pressure change in the detection process is prevented, and the overall detection effect is improved.

The invention discloses a pipeline air charging device and method, and relates to the technical field of vehicle detection and maintenance, the pipeline air charging device comprises a supporting seat, a positioning gland and a transition joint, the supporting seat is of a hook-shaped structure, and the supporting seat is provided with a clamping groove used for clamping a car coupler main blast pipe fixing seat; one end of the supporting seat is connected with a positioning gland, a transition connector is installed on the side, away from the supporting seat, of the positioning gland and used for being connected with an air charging pipeline, and the other side of the positioning gland is used for being in butt joint with a vehicle body air pipe. The supporting seat is designed according to the outer contour of the coupler, accurate, firm and reliable positioning is guaranteed, and the air charging efficiency can be improved.

The invention provides a fuel cell system and a humidification control method thereof. The fuel cell system comprises an electric pile, a humidifier and an air pipeline, wherein the air pipeline comprises a dry air inlet header pipe, an air pile inlet pipeline, a dry air bypass, an air return pipeline, a backpressure pipeline and a bypass pipeline; one end of the air return pipeline is connected with an air outlet of the galvanic pile, and the other end is connected with a return air inlet of the humidifier; one end of the backpressure pipeline is connected with a backflow air outlet of the humidifier, and the other end is communicated with external atmosphere; two ends of the bypass pipeline are connected with an air return pipeline and a backpressure pipeline; a first throttle valve is arranged in the dry air inlet main pipe; a second throttle valve is arranged in the dry air bypass; a third throttle valve is arranged in the air return pipeline; and a fourth throttle valve is arranged in the bypass pipeline. In this way, when humidification is needed, the opening degree of the first throttle valve and the third throttle valve can be increased, the opening degree of the second throttle valve and the fourth throttle valve can be reduced, the water supplementing requirement of the humidifier is lowered, and the problems in the prior art are solved.

The invention belongs to the technical field of forklift hydraulic diagnosis optimization, and provides a fault self-diagnosis and optimization method for a forklift hydraulic system, which is used for monitoring the air pressure of an oil suction pipeline in the forklift hydraulic system, judging whether the oil suction pipeline leaks air or not, directly determining whether a fault occurs at the oil suction pipeline or not, and improving the working efficiency of the forklift hydraulic system. The content of bubbles in oil can be reduced, the pressure and flow transmission efficiency of a hydraulic system can be improved, when it is judged that an oil suction pipeline leaks air, under the scene that the forklift steers at a small angle continuously between narrow goods shelves, the steering lagging duration and the bubble compression duration of each time of small-angle steering are obtained respectively, and the steering lagging duration and the bubble compression duration of each time of small-angle steering are obtained. The correlation degree between the steering lag time and the oil bubble compression time is evaluated, the influence mechanism of air leakage on a steering system is known more deeply, different types of faults can be distinguished, the main reason of steering lag caused by oil bubble compression can be quickly positioned, and the method and the device can be used for adjusting parameters such as the sending opportunity and the frequency of a steering instruction in the later period. And data support is provided.

The present application provides a method, device, electronic equipment and medium for simulating transient flow of gas column in pipeline, which relates to the field of hydraulic numerical simulation calculation. The method includes: constructing elastic water control algorithm, gas column control algorithm and gas-liquid boundary control algorithm; establishing interface tracking algorithm at the gas-liquid boundary according to the transient state of gas-liquid boundary and rigid interface assumption; using moving wave to calculate the target pressure and target flow of any node to be measured of the target pipeline; the present application can combine the characteristics and mechanism of transient flow of impact gas column at the end of the pipeline nozzle, enrich and improve the theory of transient flow of impact gas column, and provide scientific judgment for the engineering design and safe operation of water pipeline system. The present application can also solve the problem of poor simulation effect of existing models and actual engineering, so as to simulate the actual pipeline in real time and accurately, grasp the hydraulic safety problem of the engineering, and timely check the hidden dangers, which is of great significance to the safety and stability of the actual pipeline.

The invention relates to a high-pressure gas-water cyclone pipeline cleaning system, comprising an air compressor, a control switch, a cyclone generator and a water pipe, wherein the cyclone generator and the water pipe are connected to the pipeline to be cleaned; the air compressor provides high-pressure air; the control switch controls the high-pressure air to be injected into the cyclone generator at a certain frequency; the cyclone generator converts the high-pressure air generated by the air compressor into high-speed cyclone gas, and injects it into the pipeline to be cleaned; the water pipe provides water flow for the pipeline to be cleaned, and forms a high-pressure gas-water cyclone in the pipeline to be cleaned with the high-speed cyclone gas; the cyclone generator comprises a split guide pipe and a cyclone body, the cyclone body comprises a shell, a center column and a cyclone plate, the cyclone plate is located between the shell and the center column, the split guide pipe is connected to one end of the shell, and the other end of the shell is connected to the pipeline to be cleaned. The invention forms a high-pressure gas-water cyclone in the pipeline through the cyclone generator, and the gas-water two-phase is fully mixed to form an explosive cutting force, and the cutting force on the pipe wall attachment is stronger.

The present invention relates to the field of pipeline production technology, and specifically to a pipeline air tightness detection tool, the pipeline air tightness detection tool comprising: a detection support unit, the detection support unit is provided with a plurality of guide columns, and both ends of the detection support unit are also provided with limit columns, and a pipeline body is slidably installed between the limit columns and the guide columns; and an air tightness detection mechanism, the air tightness detection mechanism is connected to the detection support unit and is sleeved on the pipeline body, wherein the air tightness detection mechanism comprises a fixed detection box, a rotating odor detection box and a drive assembly; the pipeline air tightness detection tool of the present invention has a novel structure, simple operation, and various detection methods, which is conducive to detecting the air tightness of the pipeline in a relatively short time, and can accurately determine the location of the leak, thereby improving the efficiency of the detection work and the accuracy of the detection, and avoiding safety hazards of the pipeline during subsequent use.

The utility model relates to the technical field of pipeline air volume measuring devices, and provides an environment-friendly equipment pipeline air volume measuring device which comprises two mounting plates, a plurality of guide sliding rods fixedly arranged on the opposite faces of the two mounting plates, an adjusting plate connected to the outer surfaces of the guide sliding rods in a sliding mode, a first motor output shaft driving a driving lead screw to rotate, and a second motor output shaft driving the driving lead screw to rotate. An adjusting plate is driven to move between the mounting plates on the two sides along a guide sliding rod, a plurality of connecting plates are driven to rotate on the adjusting plate, the connecting plates drive a plurality of rotating plates to rotate around a first rotating shaft, and then the distance, relative to the axes of the two mounting plates, of a plurality of bottom plates is adjusted; the device can be correspondingly adjusted according to the inner diameter of the environment-friendly equipment pipeline with the actual air volume to be measured, air in the environment-friendly equipment pipeline blows the fan blades in the ventilation pipes, the device measures the air speed and calculates the air volume by combining the sectional area of the pipeline at the measurement position, and the data processing display screen displays the air volume measurement and calculation result of the device.

The utility model relates to a full-sealed bypass pipeline air valve device, which is characterized in that a first frame body and a second frame body are connected in an air valve shell in a sliding manner, two sides of one end of a plurality of flow choking blades are rotatably connected in the first frame body through a rotating shaft, and two sides of the other end of each flow choking blade are rotatably connected in the second frame body through a rotating shaft; sealing blocks are fixedly connected to the ends, away from the second frame body, of the multiple flow blocking blades, open grooves are formed in the side faces of the multiple flow blocking blades, sealing assemblies are arranged in the open grooves, adsorption assemblies used in cooperation with the sealing blocks are arranged on the top faces of the sealing assemblies, and a fixing frame is fixedly connected to the top of the end face, away from the second frame body, of the first frame body; driving assemblies are arranged on the end faces, away from the first frame, of the fixing frames; and through arrangement of the sealing blocks, a gap between every two adjacent flow blocking blades can be sealed, and the sealing performance between every two adjacent flow blocking blades is further improved in cooperation with the sealing assemblies and the adsorption assemblies.

The utility model relates to the technical field of fan pipelines, and discloses a fan pipeline air leakage prevention device which comprises a fan body, and the surface side of the fan body is fixedly connected with a first connecting pipe. The first connecting frame is connected with the second connecting frame, the sealing plate on the second connecting frame is inserted into the sealing groove in the first connecting frame, the fixing bolt is inserted into the connecting groove of the first connecting frame and the second connecting frame, a user pulls the sliding plate to move, and the sliding plate drives the sliding block to move; when the sliding plate moves to the position where the fixing plate and the fixing bolt are connected, the rotating plate is rotated through the rotating seat, the fixing plate on the rotating plate is inserted into the fixing groove in the fixing bolt, then the spring is contracted due to pulling, and the spring drives the fixing plate to pull the fixing bolt; and the overall sealing performance is guaranteed through the sealing plate and the sealing groove, and then rapid mounting and dismounting of the pipeline are guaranteed through the fixing plate and the spring.

The utility model belongs to the technical field of pipeline air tightness detection, and particularly discloses an automobile pipeline clamping mechanism and an air tightness detection fixing device.The clamping mechanism comprises a mounting plate, a first pipe column, a fixing pipe, a clamping jaw and a fastening ring; wherein the first pipe column, the fixing pipe and the fastening ring are concentrically arranged from inside to outside; clamping jaws are fixed to the periphery of the tail end of the fixing pipe. The air tightness detection fixing device comprises a detection platform and a fixing mechanism, and further comprises the clamping mechanism. The fixing mechanism and the clamping mechanism are both fixed on the detection platform, and a mounting plate in the clamping mechanism is vertically fixed on the detection platform; the fixing mechanism is connected with the clamping mechanism through a detected pipeline, and a connector clamped with the fixing mechanism is arranged at the tail end of one end, connected with the fixing mechanism, of the detected pipeline. The device is simple in structure, easy to assemble and disassemble and low in cost; the pipeline fixing tightness degree can be flexibly adjusted, the flexibility is high, automobile pipelines can be rapidly fixed, and the working efficiency is high.

The utility model relates to a composite device for preventing air leakage and molten steel backflow of a steel ladle pipeline, which is characterized by comprising a steel ladle air brick, a metal hose, a pressure container, a one-way valve, an air inlet pipeline and a quick connector, the number of the metal hoses is two, one end of each metal hose is connected with one independent steel ladle air brick, and the other end of each metal hose is connected to an air outlet of the pressure container. The one-way valve is arranged on an air inlet pipeline of the pressure container in series, and the air flow direction of the one-way valve is in one-way conduction from an external air source to a steel ladle air brick. The air inlet end of the air inlet pipeline is communicated with an external air source through a quick connector. According to the composite device for preventing air leakage and molten steel backflow of the steel ladle pipeline, through unique design and component cooperation, air leakage and molten steel backflow are effectively prevented, production safety and stability are guaranteed, and the maintenance cost is reduced.

The utility model provides a metering and calibrating device for a hydrogen adding machine for an automobile, which comprises a detection box body provided with a fixed pipeline, and a detection module is arranged on the fixed pipeline; a first connecting position and a second connecting position which are connected with one end of the fixed pipeline are respectively arranged on the detection box body; the first connecting position is used for inserting the hydrogen adding machine; and the connecting air gun is connected with the other end of the fixed pipeline and is connected with a hydrogen filling port of the automobile. According to the metering and calibrating equipment of the hydrogen adding machine for the automobile, the second connecting position is connected with the shielding gas supply unit to clean air in a pipeline before the hydrogen adding machine is inserted, so that potential safety hazards caused by mixing of hydrogen and air are avoided, and the safety in the metering and calibrating process is improved; meanwhile, the clean air ensures the purity of gas components in the pipeline and prevents the air from interfering with hydrogen metering, so that the accuracy of metrological verification of the hydrogen adding machine is remarkably improved; the connecting air gun can be directly connected with a hydrogen filling port of an automobile without repeated disassembly.

The invention relates to the technical field of fluid control, in particular to an all-working-condition water supply and drainage pipeline air valve, and discloses an air valve named as an all-working-condition water supply and drainage pipeline air valve. The air valve aims at solving the problems of performance contradiction and integration complexity of an existing air valve under all working conditions (large-flow intake and exhaust, trace exhaust, low-pressure self-sealing and water hammer protection). The exhaust valve is characterized by comprising a valve body, a buoy, an arc-shaped valve plate, a valve cover, a pedestal, a sealing ring and an exhaust speed limiting plate. The sealing ring is matched with the pedestal to realize low-pressure self-reinforced sealing; the arc-shaped valve plate and the valve body form a large-flow exhaust channel, a trace exhaust channel is arranged in an exhaust rod, and the arc-shaped valve plate and the valve body are independent; the exhaust speed limiting plate is driven by airflow to limit exhaust during high-speed exhaust. According to the scheme, the safety, reliability and efficiency of the system can be improved, and large-flow intake and exhaust, low-pressure precise sealing and water hammer prevention are considered.

The present invention belongs to the technical field of aircraft environmental control systems and relates to a pipeline-type air atomizing nozzle; comprising a nozzle body, a nozzle core, and a nozzle nozzle; the nozzle body is sealed and installed with the nozzle core, and the nozzle body is sealed and installed with the nozzle nozzle; the nozzle body is composed of an air supply port, a gas buffer chamber, and an atomizing chamber; the air supply port is the inlet of the gas medium; the gas buffer chamber serves to stabilize the air pressure and is used to transport the gas medium; the atomizing chamber is a chamber in which the liquid medium and the gas medium are atomized inside the air atomizing nozzle; the nozzle core is cylindrical and consists of a liquid supply port, a liquid spray hole, a gas spray hole, and a gas-liquid atomizing chamber. The pipeline-type air atomizing nozzle provided by the present invention reduces the contact between the atomizing medium and the inner wall of the pipeline, and the atomizing medium and the fluid medium inside the pipeline can be fully mixed and reacted in a confined space, thereby greatly improving the control quality of parameters such as temperature and humidity of the fluid medium in the pipeline.

The utility model discloses an internal and external direct injection combustor structure which comprises a central air inlet horn furnace end, an external air inlet seat and an external direct injection pipeline. The outer gas inlet seat is arranged at the top of the central gas inlet horn furnace head and is fixedly connected with the central gas inlet horn furnace head, a central gas outlet hole is formed in the top of the central gas inlet horn furnace head, a central gas outlet pipeline matched with the central gas outlet hole is arranged in the middle of the outer gas inlet seat, and gas enters from the central gas inlet horn furnace head and is directly exhausted through the central gas outlet pipeline. An outer air inlet pipeline is arranged on the outer side of the outer air inlet seat, an outer air inlet pipeline air inlet head is arranged on the outer side face of the outer air inlet pipeline, a plurality of outer air inlet pipeline air outlet heads are arranged on the top of the outer air inlet pipeline, and the bottom of the outer direct injection pipeline is arranged on the outer air inlet pipeline air outlet heads. Fuel gas enters from the gas inlet head of the outer gas inlet pipeline, passes through the gas outlet head of the outer gas inlet pipeline and then is exhausted from the outer direct injection pipeline.

The utility model relates to the technical field of hydraulic pipeline air tightness testing, and discloses a pipeline air tightness testing device with a protection function, which comprises an air tightness tester, a plurality of groups of air pipe joints are fixedly arranged on the outer wall of the air tightness tester, and the air pipe joints are connected with the air tightness tester. The pipeline air tightness testing device with the protection function comprises an air tightness tester, the back of the air tightness tester is provided with a protection mechanism used for protecting an air pipe connector, the protection mechanism comprises a protection cover, and the protection cover is slidably connected to the outer wall of the air tightness tester. The bolt is rotated to be matched with the sliding plate to drive the rubber pad to be attached to the surface of the air pipe connector, the sliding plate is matched with the rubber pad to seal the air pipe connector, meanwhile, the air pipe connector can be protected through the protection cover, and impurities are prevented from invading the air pipe connector to cause blockage of the air pipe connector.

The application discloses a fermentation mechanism, which comprises a tank body, a cavity is arranged in the tank body, an air distributor is fixedly arranged at the bottom of the cavity, a pipeline for conveying air is connected between the air distributor and the tank body, the air distributor comprises a top plate, side plates are connected to the two sides of the top plate and connected with the bottom of the tank body, through holes are formed in the side plates and the top plate, the diameter of the through hole of the top plate is larger than that of the through hole of the side plate, the top plate, the side plates and the bottom of the tank body jointly enclose an air shunting cavity, a distribution plate is arranged in the air shunting cavity, a shunting hole is formed in the distribution plate, a rotating device is connected to the distribution plate, and the distribution plate rotates relative to the top plate under the action of the rotating device to adjust the coincidence degree of the shunting hole and the through hole. The distribution plate is driven to rotate in the air distributor through the rotating device, the coincidence degree of the shunting hole on the distribution plate and the through hole on the top plate is adjusted, the main flow direction of air is changed, and different oxygen requirements in the tank in the early fermentation stage and the middle and late fermentation stages are met.

The application discloses an energy-saving type vacuum drainage pipeline air supplementing and cleaning device, which comprises a vacuum valve and a negative pressure controller, the negative pressure controller comprises a vacuum output port and a first vacuum pipeline interface, the vacuum valve comprises a vacuum input port and a second vacuum pipeline interface, the first and second vacuum pipeline interfaces are connected with a vacuum pipeline, the vacuum output port of the negative pressure controller is communicated with the vacuum input port of the vacuum valve, and the vacuum negative pressure output by the negative pressure controller can control the opening and closing of the vacuum valve. The energy-saving type vacuum drainage pipeline air supplementing and cleaning device is combined with the vacuum valve and the negative pressure controller, can accurately and effectively obtain a vacuum negative pressure value in a suitable range to supplement the atmosphere to the vacuum pipeline for pipeline cleaning, and cannot cause the situation that the vacuum station continuously extracts the gas in the vacuum pipeline to generate high energy consumption when the system is restarted or starts to die, so that the technical effects of preventing misoperation and saving energy are achieved.

The utility model relates to the technical field of gas heaters, and discloses a multi-pipeline hot-air blower, which comprises a gas input component, an air inlet interface for inputting gas to be heated and a first sealing cover plate, the air inlet interface is arranged on one side of the first sealing cover plate, and the first sealing cover plate is arranged on the other side of the first sealing cover plate. The first sealing cover plate is provided with a plurality of air inlet holes communicating with the air inlet connector. The gas heating assembly comprises heating pipes and conducting rings, the number of the heating pipes is the same as that of the gas inlet holes, the conducting rings are arranged on the heating pipes in a sleeving mode, the conducting rings are used for being communicated with a power source to heat the heating pipes and further heat to-be-heated gas in the heating pipes, plastic parts are arranged at the two ends of each heating pipe respectively, and the plastic parts are connected with the gas inlet holes in a sealed mode; the gas output assembly comprises an air outlet connector for outputting heated gas and a second sealing cover plate. More gas can be treated at the same time through the multi-pipeline design, the gas heating efficiency is improved, and meanwhile, the situation that the industrial gas to be heated is polluted by metal ions is avoided.

The application relates to the technical field of pipeline air tightness detection, and discloses a storage energy pipe air tightness test equipment and a test method, which comprise a detection workbench, a preliminary positioning assembly for preliminarily positioning the storage energy pipe is arranged above the detection workbench, and a water immersion air tightness test assembly for air tightness test of the storage energy pipe is arranged above the detection workbench. The application can integrate multiple function modules such as preliminary positioning, air tightness test, outer wall detection, inner wall detection, classification and work station transfer into one, and realize continuous operation through an automatic control system, so that the integration and automation level of the detection process is greatly improved. Through the principle of 'completing the subsequent detection even if the problem is found', the equipment can help the producer to comprehensively understand the specific defect type and position of each unqualified product, and provide valuable data support for analyzing the process deficiency and carrying out unified improvement.

1. Name of the design product: air supply pipeline (combination). 2. Use of the design product: the design is used for pipeline air supply. 3. Design points of the design product: in shape. 4. Picture or photo that best shows the design points: perspective view. 5. The bottom view is omitted because it is the same as the top view.

The utility model relates to a fresh air system adopting a pipeline air valve to adjust air volume, which comprises a fresh air fan and a controller, each floor in a building is provided with a fresh air supply outlet, an air exhaust outlet and an air quality detection device, the fresh air fan is connected with a fresh air pipeline and an exhaust pipeline, the fresh air pipeline is connected with a fresh air distributor, and the exhaust pipeline is connected with a fresh air outlet. A plurality of fresh air branch pipelines are connected to the fresh air distributor, and fresh air pipeline valves are installed on the fresh air branch pipelines respectively. According to the utility model, factors such as space factors, personnel activity areas and the like are considered, the air volume of the fresh air system is adjusted by adopting a subarea control mode and a pipeline air valve, the corresponding equipment capacity purchase quantity can be reduced in actual use, and the energy loss is reduced.