7995 results about "Air tightness" patented technology

The embodiment of the invention relates to the technical field of sealing detection, and discloses an artificial intelligence-based sealing detection method, which comprises the following steps of: determining corresponding control parameter information according to the volume of a detected object and a deformation parameter of the detected object of detected object information; according to the control parameter information, the working states of the air source assembly and the inflation proportional valve are controlled to inflate the tested object; if the pressure conversion information is smaller than a first set threshold value, it is determined that the airtightness of the corresponding measured object meets the requirement, and if the pressure conversion information is larger than the first set threshold value, the next step is executed; and obtaining an infrared detection image of the detected object shot by the infrared camera, inputting the infrared detection image into the air tightness detection model for identification so as to determine the air tightness state of the corresponding detected object, and outputting the corresponding air tightness state. According to the scheme of the embodiment of the invention, through accurate inflation control and an intelligent detection process, the method can improve the detection efficiency while ensuring the detection precision.

The invention relates to the technical field of workpiece airtightness detection, in particular to a workpiece airtightness detection method and system based on multi-source data fusion, and the method comprises the steps: collecting the pressure fluctuation, temperature field distribution and vibration spectrum data of a workpiece through a sensor array, and executing a stepped pressure excitation process; the method comprises the following steps: dynamically configuring an inflation rate according to the heat-conducting property of a material, reversely compensating pressure based on temperature field data in a pressure maintaining stage to eliminate thermal deformation interference, and extracting a pressure attenuation rate and nonlinear characteristics, an area proportion of an abnormal low-temperature region and space aggregation of an energy abrupt change point in a vibration spectrum from compensated data; according to the method, multi-physical field features are fused, the detection precision and reliability are improved, and the method is suitable for the airtightness detection requirement in the high-precision manufacturing field.

The invention discloses an explosive environment airtight medium-voltage power transmission cable, and relates to the technical field of power cables, the explosive environment airtight medium-voltage power transmission cable comprises a central conductor, the outer side of the central conductor is tightly coated with an internal conductor insulator, and the outer side of the internal conductor insulator is tightly coated with an insulated conductor shield; the outer sides of the multiple insulated conductor shields are jointly coated with a steel tape armoring, the outer side of the steel tape armoring is tightly coated with a PVC protection sleeve, and the outer side of the PVC protection sleeve is provided with an external telescopic expansion protection mechanism. A fireproof barrier is constructed on the outer side of the cable through the flame-retardant metal thin net, it is ensured that combustible gas outside the cable cannot be ignited even if open fire appears in the cable, the overall fireproof and explosion-proof performance of the cable is further effectively improved, and meanwhile the outer diameter of a fault position is actively increased, so that the service life of the cable is prolonged. A high-voltage breakdown protection layer in the cable is prevented from igniting external combustible gas, and the overall protection performance of the cable is improved.

The invention discloses a vacuum cup laser welding device, and belongs to the technical field of laser welding, the vacuum cup laser welding device comprises a processing table, the top of the processing table is connected with a base box, and the top of the base box is provided with a synchronous clamping assembly. According to the device, the air curtain assembly is arranged, a continuous and uniform annular laminar flow air curtain is formed by means of the nozzle array evenly distributed in the circumferential direction, a stable inert gas protection environment is formed in a welding area, the oxidation probability of a molten pool is remarkably reduced, meanwhile, the air curtain structure optimally designed through fluid dynamics can effectively disperse welding smoke dust, and the welding quality is improved. By means of a mechanical structure, the angle of the direction adjusting pipe can be accurately adjusted, the coverage range of the air curtain can be flexibly adjusted, accordingly, the vacuum cup body with different specifications can be adapted, possible protection blind areas are eliminated, and the service life of the vacuum cup body is prolonged. And the optimal action angle between the welding protection airflow and the workpiece surface is always kept.

The invention belongs to the technical field of air tightness detection, and discloses an automobile filter air tightness detection compensation method and system, and the method comprises the steps: placing a to-be-detected automobile filter in a detection cavity in a sealing manner, and applying a dynamically changing pressure to the detection cavity according to a preset time sequence; in the process of applying the dynamically changing pressure, a dynamic pressure signal and an acoustic signal are synchronously collected; performing time domain and / or frequency domain analysis on the acoustic signal to obtain a plurality of acoustic features; according to the dynamic pressure signal, analyzing a dynamic response mode of a plurality of acoustic characteristics, and extracting a leakage acoustic characteristic strongly associated with the dynamic change of the pressure; based on the leakage acoustic characteristics, whether the to-be-detected automobile filter leaks or not and the leakage degree are judged; therefore, the real leakage sound and various interference sounds can be effectively distinguished, and the detection accuracy is improved.

The invention relates to the technical field of gas cylinder detection, in particular to a gas cylinder airtightness detection device which comprises a base, a clamping rotating structure is arranged at the upper end of the base, a gas cylinder is clamped on the clamping rotating structure, a lifting structure is arranged at the upper end of the base, and a sealing shell arranged on the outer side wall of the gas cylinder in a sleeving mode is installed on the lifting structure. An air pressure sensing structure is installed at the upper end of the sealing shell, four air bag shells are arranged on the bottom of an inner cavity of the sealing shell in a circumferential array mode, the outer wall of a gas cylinder is clamped through the four sealing gaskets and the air bags, effective sealing can be conducted when the outer wall of the gas cylinder is uneven, and the detection accuracy is improved; and meanwhile, the outer surface of the gas cylinder is cleaned by the cylindrical gas bag through expansion rotation of the cylindrical gas bag, when the gas bag is wizened, self-cleaning can be achieved when the gas bag rotates through sagging of the gas bag, gaps between the sealing gaskets can be filled when the gas bag is subjected to secondary expansion, and the result stability is improved.

The invention discloses plastic pipe fitting air tightness detection equipment, and belongs to the technical field of plastic pipe fitting air tightness detection.The plastic pipe fitting air tightness detection equipment comprises a base, a pressurizing assembly is embedded in the upper end of the base, a pressure detector is arranged on the right side of the base, and two stand columns symmetrically distributed about the pressurizing assembly are fixedly connected to the upper end of the base; a connecting plate is slidably installed between the inner walls of the two stand columns, two symmetrically-distributed air cylinders are installed at the upper end of the connecting plate in an embedded mode, the telescopic ends of the bottoms of the air cylinders are fixedly connected with connecting blocks, and air pressure flow direction detection assemblies are installed at the lower ends of the connecting blocks. Then, the pressure detector can detect the pressure value in the pipe fitting in real time, the accuracy of airtightness value detection is guaranteed, meanwhile, under the condition that the inner wall and the outer wall of the pipe body are pressed, whether the pipe fitting has cracks or not can be detected, and therefore the yield of the pipe fitting is synchronously detected.

The invention discloses a device assembly pressure maintaining device and an assembly mechanism. The device assembly pressure maintaining device comprises a gland mechanism, and the gland mechanism is connected with a press-in driving device; a buckling control device is mounted between the press-in driving device and the cover pressing mechanism; the cover pressing mechanism comprises a cover pressing body, clamping jaws are symmetrically installed on the two sides of the cover pressing body, the buckling control device is connected with the cover pressing body and drives the clamping jaws to be opened towards the two sides, the cover pressing body is provided with an air suction assembly which is connected with a vacuum air path and used for picking up the device, and the cover pressing body is further provided with a pressing head assembly which applies pressure to the device. When the gland mechanism presses the device into the target product, the pressure head assembly applies certain pressure to the device; the buckling control device is separated from the gland body, the opened clamping jaw resets and is buckled with the tool, the gland mechanism continuously exerts pressure maintaining pressure on the device, device installation and pressure maintaining are seamlessly connected, the working efficiency is improved, and the air tightness of a product is greatly improved.

The invention relates to the technical field of electric power intelligent judgment, in particular to an AI-based intelligent electric energy meter fault diagnosis system, which comprises an operation data acquisition module, a jump correlation judgment module, an operation deviation judgment module, a current waveform diagnosis module and an abnormity alarm module. According to the invention, through synchronous acquisition of the current data and the operation data of the refrigeration storage, whether the current jump is related to the gating action is judged, and the refrigeration performance abnormity of the refrigeration storage and the fault type of the intelligent electric meter are effectively identified by further combining multiple cross validation of baseline energy consumption and temperature change; an ideal current waveform is constructed through an AI algorithm and is compared with an actually measured waveform, so that intelligent judgment and classification of fault types are realized; meanwhile, the diagnosis result is linked with the operation and maintenance system, the response efficiency is improved, and the method is particularly suitable for scenes with high requirements on the stability of the electric meter, such as cold chain storage, and has good practical value and popularization prospect.

The invention provides an air tightness optimization method for a soft pressurization cabin, and the method comprises the steps: presetting a dynamic sensor array at a specific position where a structure is liable to fail according to a failure risk assessment table, collecting stress concentration data caused by non-uniform pressure distribution in real time, and generating a stress distribution dynamic graph containing a time sequence; the dynamic adjusting device is driven to operate through the homogenized pressure distribution adjusting scheme, pressure field data in the cabin body is updated in real time, whether material fatigue is within the fracture risk range or not is judged, and a fatigue state monitoring report is generated; obtaining a fracture risk index in the fatigue state monitoring report, carrying out iterative adjustment on the fiber weaving density and the elastic modulus of the key area by adopting a material design optimization algorithm, and determining a final structure layout parameter for improving the performance; and extracting a limiting condition of dynamic adjustment difficulty from the final structure layout parameters, simulating a cabin operation state in an extreme environment through a digital twin technology, calculating a boundary value of performance limitation, and obtaining a verification result of performance improvement.

The invention belongs to the technical field of underground gas storage, and particularly relates to a long-term efficient hydrogen storage composite lining structure for an underground rock cavern and a preparation method of the long-term efficient hydrogen storage composite lining structure. The long-term efficient hydrogen storage composite lining structure for the underground rock cavern comprises surrounding rock and an internal composite structure of the surrounding rock. The surrounding rock reinforcing layer is formed by pressure pre-grouting in surrounding rock and can resist tensile stress transmitted to the surrounding rock by internal air pressure and enhance air tightness; the permeable layer is arranged on the inner side of the surrounding rock reinforcing layer and can discharge underground water to prevent hydrostatic pressure from causing extrusion deformation damage to the concrete bearing layer during construction and causing instability of the sealing steel lining; the reinforced concrete bearing layer is arranged on the inner side of the permeable layer and the outer side of the slip layer, and micro self-healing capsules capable of repairing cracks and enhancing sealing performance are evenly added in the injection molding process; the anti-drag sliding layer is arranged between the steel lining and the bearing layer and inhibits shear damage of the sealing steel lining to the bearing layer under high internal pressure; the steel lining sealing layer is arranged on the inner side of the sliding layer to bear part of gas load and seal gas.

The dryer comprises a dryer shell, an inner cavity of the dryer shell is divided into a drying agent cavity and a heating module wiring cavity which are independent of each other through an end face structure, a heating module barrel sleeve is arranged on the end face structure in a penetrating mode, and the two ends of the heating module barrel sleeve stretch into the two independent cavities respectively. Two air tap connectors communicated with the drying agent cavity are arranged on the outer wall of the dryer shell at intervals, a drying agent drying assembly is arranged between the outer wall, located between the two air tap connectors, of the heating module barrel sleeve and the inner wall of the dryer shell, and a heating body assembly is arranged in the heating module barrel sleeve. A connector assembly is arranged on the outer wall of the dryer shell and used for being connected with an external power source, and the heating body assembly is electrically connected with the connector assembly. According to the invention, related connector design is simplified, product cost is reduced, airtightness failure caused by structural deformation after long-term work of the plastic assembly is avoided, high-efficiency and low-loss heating control can be realized, and system arrangement is more flexible.

The invention relates to the technical field of automobile die casting air tightness detection, in particular to a new energy automobile die casting air tightness automatic detection device which comprises a detection mechanism arranged on a detection table, and a conveying mechanism and a coating mechanism are arranged on the front portion and the rear portion of the detection mechanism; through cooperation of the detection mechanism, the conveying mechanism and the coating mechanism, automatic discharging of fan motor shells detected to be qualified through a pressure drop method can be achieved, or leakage point detection and positioning of unqualified shells can be directly conducted, and therefore the redundant links of repeated disassembly, transfer and secondary clamping of the shells in traditional step-by-step operation are eliminated; through the cooperation of the detection mechanism, the conveying mechanism and the coating mechanism, a water immersion method detection device and an oil coating method detection device can be integrated in the same equipment, so that a corresponding detection mode is automatically matched according to the leakage data of the unqualified fan motor shell.

The invention relates to a valve air tightness detection device and a control method, the valve air tightness detection device comprises a base and a plugging assembly provided with a differential sealing unit, the differential sealing unit is matched with an inner floating sealing disc through an outer force bearing seat to form a pressure compensation cavity, and a high-pressure medium is introduced through a through air channel; and the compression area in the cavity of the inner floating sealing disc is larger than that of the abutting end of the valve port. According to the valve airtightness detection device, net thrust generated by a medium on the area difference is used for driving the sealing disc to automatically press the valve port, self-locking sealing is achieved, external huge axial clamping force does not need to be applied, the problems of false sealing and detection distortion caused by valve body deformation due to external loads are effectively solved, and the detection efficiency is improved. Near-live detection for eliminating forced stress interference is achieved, and physical damage to the valve body and a precise assembly is avoided.

The invention provides a non-stop production under-pressure tapping construction method for an oil pipeline, and belongs to the technical field of oil pipeline construction. The method comprises the steps that a tapping operation point is selected, and the wall thickness is measured; preparing an under-pressure welding short pipe and a valve; welding a short pipe on the oil pipeline under pressure, and determining optimal welding current, voltage and welding speed by adopting a welding parameter game model; installing a valve and carrying out a strength test; assembling the tapping machine and connecting the tapping machine with the valve; carrying out overall air tightness inspection; pressure tapping operation is executed, and the tapping speed and the feeding amount are adjusted in real time through the tapping operation parameter optimization model; returning the cutter and closing the valve after tapping; and dismantling the tapping machine to finish the operation. According to the scheme, the problems existing in the prior art are effectively solved, the reliability and safety of under-pressure trepanning construction are greatly improved, meanwhile, the operation efficiency is remarkably improved, and the problems that in an existing under-pressure trepanning technology, the welding quality is still difficult to control, and the trepanning process is uncontrollable are solved.

The invention discloses an FPSO ship body welding seam airtightness inspection device, which comprises a supporting frame, a rotating assembly is arranged on the rear side of the supporting frame, a rotating frame is arranged on the supporting frame through the rotating assembly, a partition plate is fixedly arranged on the front side of the rotating frame, and a fixing frame is fixedly arranged on the left side of the partition plate. The device comprises a fixing frame, a driving assembly is arranged in the fixing frame, the fixing frame is provided with a hydraulic push rod through the driving assembly, a sealing box is fixedly arranged at the extension end of the hydraulic push rod, a groove is formed in the sealing box, a sealing ring is fixedly arranged in the groove, and an air pressure sensor is fixedly arranged on the surface of the sealing box. The sensing end of the air pressure sensor penetrates through the sealing box and extends into the sealing box, the fixing frame is provided with a first nozzle and a second nozzle through the driving assembly, the device can conduct air tightness inspection on the welding seam after all sections of the FPSO ship body are closed, and meanwhile the position of a leakage point on the surface of the welding seam can be rapidly identified.

The invention discloses an aerostat with a built-in pressure adjusting structure, a wind power generation system and a control method, the aerostat of one embodiment comprises an auxiliary air bag, the pressure adjusting structure arranged in the auxiliary air bag and a pressure control structure arranged outside the auxiliary air bag, the pressure adjusting structure comprises an air duct pipe, a first valve arranged at one end of the air duct pipe, a second valve arranged at the other end of the air duct pipe and a fan arranged in the air duct pipe and located between the first valve and the second valve. The pressure control structure comprises a controller and a differential pressure sensor, and the controller is used for controlling the fan, the first valve and the second valve to exhaust or inflate the auxiliary air bag according to the air pressure, sensed by the differential pressure sensor, of the bag body. According to the embodiment, the pressure adjusting structure of the aerostat is integrally arranged in the auxiliary air bag, the beneficial effects of being compact in structure, good in air tightness and the like are achieved, the stability and reliability of the aerostat are remarkably improved, and the practical application value is achieved.

The invention relates to a high-temperature superconducting cable and a manufacturing process thereof, and belongs to the technical field of electric wires and cables.The cable comprises a supporting framework, a buffer layer, a three-phase superconducting composite layer, a shielding layer, a heat insulation layer and a sheath layer which are sequentially arranged from inside to outside; the heat insulation layer comprises at least two layers of corrugated pipes formed by continuous rolling and welding, and the corrugated pipes are of periodic concave-convex structures obtained by conducting continuous rolling and side seam welding on metal strips to form closed pipe bodies and then conducting embossing treatment on the closed pipe bodies. A woven reinforcing layer wrapping the peripheries of the corrugated pipes is further arranged in the heat insulation layer, and the adjacent corrugated pipes are connected through supporting pieces to form a vacuum interlayer. According to the application, the corrugated pipe formed by continuous coiling and welding is combined with the combined structure of the braided reinforcing layer and the supporting piece, so that the continuous production of the large-length high-temperature superconducting cable can be conveniently realized, and the problems of axial stress concentration and seam accumulation defects existing in a heat insulating layer of a traditional prefabricated sleeve pipe can be eliminated; and the air tightness stability of the vacuum interlayer of the large-length high-temperature superconducting cable is ensured.

The invention discloses a negative pressure leakage testing machine for detecting the sealing performance of a steel drum, and relates to the technical field of negative pressure leakage testing machines, the negative pressure leakage testing machine comprises a leakage testing machine body, the top of the leakage testing machine body is slidably provided with an air tightness detection device, and a steel drum to be detected is placed in the leakage testing machine body. According to the negative pressure leakage testing machine for detecting the sealing performance of the steel drum, the upper sealing air bag and the lower sealing air bag expand and make contact with an inlet of the to-be-detected steel drum, sealing of the to-be-detected steel drum is completed, the accuracy of sealing performance detection of the to-be-detected steel drum is improved, the to-be-detected steel drum is pressed into water in the water tank, and the sealing performance of the to-be-detected steel drum is improved. The leakage point continuously generates bubbles, so that the position of a defect point of the to-be-detected steel drum is conveniently determined, the to-be-detected steel drum is vibrated through contact between the pressing plate and the to-be-detected steel drum, an air film attached to the leakage point is loosened through vibration, bubble separation is promoted, bubbles are conveniently generated, and the detection accuracy is improved. Therefore, the defect points of the to-be-detected steel drum can be determined more quickly.

The invention relates to an air tightness detection tool and detection system integrated design method in the field of air tightness detection equipment, and the method comprises the steps: obtaining product form data, extracting shape, size and material information from a product three-dimensional model database, calculating the key points of the outer contour of a product through a geometric feature analysis algorithm, and calculating the shape, size and material information of the product; determining product form diversity parameters; a clamp, an inflation system and a sorting module are decomposed into independent functional units through a modular design structure algorithm, a standardized interface protocol is generated, and physical connection and data interaction modes among the modules are determined; and according to the final tool design parameters, a solid fixture is generated by adopting a three-dimensional printing technology, a robot is controlled through an automatic assembly algorithm to complete integration of the fixture, an inflation module and a sorting module, and an air tightness detection system which can be put into production is obtained.

The invention relates to the technical field of lens testing, and discloses a multifunctional optical lens testing lens device which comprises a connecting frame. A casing; a lens body; the positioning assembly is used for fixing the position when the lens body is detected; the detection assembly is used for carrying out multidirectional detection on the lens body; the detection assembly comprises an air pressure detection part, an impact detection part and a vibration detection part; and a driving assembly. According to the multifunctional optical lens testing lens device, multi-direction detection of the lens can be realized through the arranged detection assembly, and multi-direction synchronous detection in vibration, impact, air tightness, waterproofness and high-temperature environments is realized, so that each detection is in a linked state, the detection effect of the lens in different high-complexity environments is improved, and the detection efficiency is improved. And the whole detection process is carried out in one device, and single position conversion is not needed, so that a high-intensity environment is provided for the test of the lens, and the stability of the lens is finally detected.

The invention provides an air tightness detection device of a pressure balance type plug valve, and relates to the technical field of valve air tightness detection. An air tightness detection device of a pressure balance type plug valve comprises a water pool, an adjusting mechanism, two clamping mechanisms and an end sealing mechanism, the end sealing mechanism comprises two groups of positioning assemblies and two groups of sealing assemblies, and the positioning assemblies and the sealing assemblies are communicated and used for enabling the sealing assemblies to generate axial displacement. The sealing assembly is coaxially arranged in multiple layers, the structures of all the layers of the sealing assembly are the same, the sealing assembly is used for being inserted into an inlet and an outlet of a plug valve to be detected, and by means of the multi-layer design of the sealing assembly and the design that the positioning assembly enables each layer of the sealing assembly to generate independent axial displacement, the plug valve to be detected can be detected. The sealing assembly is adapted to plug valves to be detected with different calibers; the sealing assembly has the action of expansion under the action of air source pressure, so that the part inserted into the plug valve to be detected is in sealed connection with the plug valve, and the sealing performance is ensured.

The invention relates to the technical field of airtightness detection, in particular to a pipeline welding seam airtightness detection device which comprises a base, a coating mechanism, a sealing mechanism, a supplementing mechanism, an inserting mechanism and a locking mechanism. The two toothed bars are driven by the motor and the rotating teeth to slide relatively, the two clamping sleeves are forced to get close to each other, the welding joint of the two steel pipes can be comprehensively wrapped without being affected by the length of the steel pipes, the two annular air bags are connected in an inserted mode to form a closed-loop air bag, the guide pipe and the connecting pipe abut against each other, and therefore the welding joint of the two steel pipes can be stably welded. The pull block and the connecting block are driven to respectively drive the top blocks hinged with the pull block and the connecting block to slide, so that the clamping plate and the adaptive plate are driven to extend outwards, and the two top plates are driven to extend outwards, so that a tight fitting effect is kept at the joint of the two annular air bags; whether air in the air bag leaks or not is judged by observing the height of the connecting plate in the connecting window, and then whether cracks exist at the weld joint or not can be judged.

The invention relates to the technical field of corrugated pipe air tightness detection, and discloses an air tightness detection device and a detection method for corrugated pipe quality inspection.The air tightness detection device comprises a detection machine table, fixed installation assemblies are arranged at the two ends of the upper portion of the detection machine table, a movable supporting frame is arranged between the fixed installation assemblies, and a corrugated pipe is located above the movable supporting frame; the fixed installation assembly comprises a fixed installation mechanism and a sealed installation mechanism, the two ends of the corrugated pipe are connected with the fixed installation mechanism and the sealed installation mechanism correspondingly, and the pressurization assembly is arranged on one side of the sealed installation mechanism. An air supply mechanism is introduced into the sealed installation end of the corrugated pipe through an air inlet mechanism in the pressurization assembly, at the moment, one end of the corrugated pipe is compressed and fixed through a movable supporting frame, the end, close to the sealed installation end, of the corrugated pipe is in an extending state, and therefore all corrugations of the end, close to the sealed end, of the corrugated pipe can extend; airtightness detection is difficult to carry out on the area between the corrugations in the compressed state, and missing detection is avoided.

The invention discloses an adaptive multi-angle elbow airtightness detection method, which comprises the following steps: arranging a flexible pressure sensor array and a micro inertial measurement unit on the inner wall of an elbow, collecting multi-point sealing pressure and attitude signals in real time, fusing geometric parameters and a spatial mapping relation, and completing denoising, normalization and multi-curvature region mapping of pressure data; a distributed pressure-attitude database is combined, a function model associated with sealing pressure and pipeline geometric parameters is established, inflation, exhaust and deformation of each node are dynamically adjusted through an intelligent closed-loop regulation and control algorithm, collaborative optimization of multi-node pressure and a fitting state is achieved, and the sealing performance of the pipeline is improved. According to the method, the accuracy and the self-adaptive adjusting capacity of sealing pressure distribution under a complex bent pipe structure are effectively improved, the tiny leakage real-time positioning and self-learning optimization capacity is achieved, and the method is suitable for sealing quality guarantee of various types of curved surface pipelines.

The utility model discloses gas turbine airtightness detection tool equipment, and particularly relates to the field of gas turbines, comprising a support frame, a bidirectional threaded rod rotatably connected in the support frame, handles fixedly connected at two ends of the bidirectional threaded rod, a guide rod fixedly connected in the support frame, and a fixed plate slidably connected on the outer wall of the guide rod. The fixing plate is slidably connected to the top of the supporting frame and connected to the outer wall of the two-way threaded rod through threads, a sleeve is fixedly installed on one side of the fixing plate, a plugging air bag is fixedly connected to the inner wall of the sleeve, and a pressing ring is fixedly connected to the interior of the plugging air bag. According to the gas turbine port sealing device, the fixing plate and the blocking air bag are arranged, the blocking air bag expands to be tightly attached to the gas turbine port, the gas turbine port is sealed through expansion of the blocking air bag, the effect of rapidly sealing the gas turbine port is achieved, and workers can seal the gas turbine conveniently.

The invention discloses a space enclosing structure air tightness reduced scale test device, which comprises a reduced scale space enclosing structure, a main body structure which is reduced in scale according to a proportion and typical leakage paths which are arranged in an equal proportion, the material, the thickness, the structure and the construction process of the main body structure are consistent with those of an actual project; the model, the size and the installation process of the typical leakage path are kept consistent with those of an actual project; the environment control system comprises a reduced scale enclosure structure internal environment control device and an airtight door and window environment control device, the reduced scale enclosure structure internal environment control device can control the internal temperature and pressure of the reduced scale enclosure structure, and the airtight door and window environment control device can control the external pressure of an airtight door and an airtight window; according to the invention, the enclosure structure air tightness reduced scale test device is highly consistent with an actual engineering leakage path, so that the consistency of leakage data and actual engineering is ensured, the air tightness data is accurate and reliable, and the method can be used for actual engineering design calculation.

The invention discloses a multi-station air tightness detection device for a stop valve, and relates to the technical field of air tightness detection. The device comprises a device body, a driver is arranged at the top of the device body, a plurality of positioning grooves are formed in the top of the driver at equal intervals, sealing assemblies are arranged in the positioning grooves of the driver, an inflator is arranged in the center of the top of the driver, and a hydraulic telescopic column is arranged on the outer wall of the inflator; an anti-deviation device is arranged on the edge of the top of the driver, and an anti-pollution device is arranged in the anti-deviation device. By means of the clamping stability of the hydraulic clamping device on the stop valve and the downward pressure of the electric telescopic rod, the good stability of the stop valve in the detection process is guaranteed, and the situation that errors occur in the detection result due to the dislocation phenomenon is avoided; and the situation that the labor intensity of workers is increased due to the fact that the workers need to press the stop valve with large force in the detection process of the stop valve is avoided.

The invention relates to the technical field of hydrogen storage part production equipment, and provides a new energy hydrogen storage inner container injection molding welding detection automatic production line which comprises an injection molding station, a material handle removing station, a conveying station, an infrared welding station, a cutting station, a welding seam detection station and an air tightness detection station. According to the infrared welding station, a first welding clamp and a second welding clamp are movably arranged on a welding machine table, half liners are clamped on the first welding clamp and the second welding clamp, a shaping cutter is movably arranged on the welding machine table, and roundness detection units are arranged on the first welding clamp and the second welding clamp. The infrared heating unit is arranged between the first welding clamp and the second welding clamp, and the first welding clamp and the second welding clamp can rotate synchronously. By means of the technical scheme, the problem that in the prior art, the cutting quality of the inner container is unqualified easily due to the hydrogen storage tank inner container production line welding and cutting technology is solved.

The invention discloses steel shell battery shell cover welding detection equipment which comprises a rack. The machine frame is provided with a bottom shell circulating conveying line, a bottom shell feeding carrying mechanical arm, a welding mechanism, a CCD camera, a welding jig conveying line, a shell cover carrying mechanical arm, a shell cover feeding mechanical arm, a detection carrying mechanical arm, a welding appearance detection mechanism, a transfer conveying platform, an air tightness detection mechanism, an air tightness detection carrying mechanical arm and a shell overturning and side erecting mechanism. The discharging carrying mechanical arm, the receiving tray conveying line, the welding mechanism and the CCD camera are all arranged on the gantry mounting support, and the welding pressing plate mechanism is arranged below the welding mechanism. The pressing plate mechanism comprises a spot welding pressing plate and a full welding pressing plate, and the spot welding pressing plate and the full welding pressing plate are controlled by a pressing plate transverse movement servo module to move. Spot welding, full welding, appearance detection after welding and air tightness detection of the battery bottom shell and the shell cover can be achieved, the welding and detection processes are completed in a full-automatic mode, and the production efficiency is improved.