6034 results about "Air tightness" patented technology

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 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 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 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 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 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 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 invention relates to the technical field of gas leakage detection, in particular to a shell airtightness testing system and method, and the system comprises a pressure monitoring module, a gradient feature module, an abnormality screening module, a leakage path module and a sealing evaluation module. According to the method, the equidistant sampling points are set in the structure, the pressure time sequence difference value is extracted, multi-section continuous pressure data are constructed, the detail capturing capability of pressure change is enhanced, high-precision recognition of stable sections is achieved, the change rate difference value of adjacent sections is combined, local abnormal point positions are accurately extracted, the sensitivity of abnormal recognition and the positioning accuracy are improved, and the accuracy of abnormal recognition is improved. Through combination of periodic pressure intensity ratio analysis and path trend judgment, a pressure intensity change path chain with directivity and continuity can be constructed, the sealing state is evaluated according to a path pressure intensity gradient value and an adjacent region gradient difference, an abnormal path section is accurately recognized, local sealing integrity judgment is supported, and shell local leakage recognition efficiency and result analysis depth are improved.

The invention discloses a safety valve airtightness detection device, and relates to the technical field of safety valve airtightness detection. Comprising a workbench, a driving box and two limiting bases, a detection device is fixedly arranged on the outer wall of the top of the workbench, and the detection device comprises a bottom plate and a mounting base. A first control block is rotated to drive an adjusting screw rod to rotate in a limiting hole, so that a clamping block slides in a sliding groove, a safety valve is clamped, an inflator arranged on the outer wall of a limiting base is started to inflate the interior of an air bag, the inflator starts to work, external air is inflated into the air bag through an inflation pipe and an inflation connector, and the air continuously enters the air bag, so that the safety valve is closed. The air bag expands gradually and is tightly attached to the periphery of the part, needing to be detected, of the safety valve in the expansion process, the detection area of the safety valve can be effectively sealed, good conditions are created for follow-up precise air tightness detection, detection gas leakage is prevented, and the accuracy of a detection result is ensured.

The invention discloses a one-way valve air tightness detection method and system, and relates to the technical field of air tightness detection.According to the one-way valve air tightness detection method and system, through dynamic interaction of AI virtual sensor prediction and physical detection values and combination of time-frequency domain signal fusion, the extraction capacity of micro-leakage signals is remarkably enhanced, and misjudgment caused by background noise or residual gas in a traditional method is avoided; a multi-mode interference source correlation analysis and dynamic weight distribution mechanism is utilized to actively identify and compensate composite interference such as temperature drift and electromagnetic pulse, so that the reliability of a detection result in severe scenes such as workshop vibration and airflow disturbance is improved; and meanwhile, a model adaptation module based on transfer learning and non-contact vibration spectrum monitoring are adopted, manual parameter adjustment dependence is reduced, valve bodies of different specifications are rapidly adapted, early damage of the diaphragm is warned in advance, and the equipment maintenance period is prolonged.

The invention discloses a pipeline air tightness detection system and method, and relates to the technical field of pipeline detection, the pipeline air tightness detection system comprises a magnetic field control and adjustment assembly, a pipeline adjustment assembly, a front-end pipeline internal detection assembly and a flexible adjustment rod, and the whole system is composed of the magnetic field control and adjustment assembly, the pipeline adjustment assembly, the front-end pipeline internal detection assembly and the flexible adjustment rod. According to the invention, modularized installation is realized, magnetic particle suspension liquid detection is utilized, pipeline leakage points are positioned through magnetic field changes, ultrasonic detection is utilized, internal structure defects and wall thickness changes of the pipeline are detected, a microstructure is detected through a quantum tunneling effect, a multi-dimensional detection method is formed, the pipeline condition is comprehensively evaluated, and the whole device is simple and convenient to operate, high in detection precision and high in reliability. The device is simple in structure and easy to operate by workers, can quickly detect a water pipe, an air pipe and an oil pipe, timely discover tiny manufacturing defects and improve the quality and safety of the whole vehicle in the fuel vehicle production process, and assists maintenance personnel to efficiently formulate a scheme, shorten the maintenance time and reduce the cost in the maintenance process.

A device for testing gas tightness and internal gas flow performance of a low-temperature heat insulation module, comprising a gas inlet / liquid inlet module (200), a gas discharging / liquid discharging module (100), and a heat insulation module (1). The gas inlet / liquid inlet module (200) comprises an inner-layer space liquid nitrogen inlet valve (6), an outer-layer space liquid nitrogen inlet valve (13), a low-pressure pressure control module, an inner-layer space high-pressure pressure control module, an outer-layer space high-pressure pressure control module, a buffer tank (34), a pressure reducing valve (14), and a filter (35) which are connected by means of pipes. The gas discharging / liquid discharging module (100) comprises a liquid nitrogen / nitrogen gas discharging valve (3), an inner-layer space gas discharging valve (4), and an outer-layer space gas discharging valve (5) which are connected by means of pipes. An outlet of the gas inlet / liquid inlet module (200) is connected to an inlet of the heat insulation module (1), and an inlet of the gas discharging / liquid discharging module (100) is connected to an outlet of the heat insulation module (1). The device can achieve tightness inspection and adaptability research and testing and research of internal space gas flow performance of the heat insulation module (1) under a low-temperature working condition and a normal-temperature working condition.

The utility model discloses an airtight door air tightness test tool, which comprises a support frame, a sealing window, a sealing door and a limit sealing mechanism, and is characterized in that the support frame is a rectangular frame, the inner wall of the support frame is provided with a groove, the sealing door is hinged to one end of the support frame, and the sealing window is fixedly connected to the other end of the support frame; the limiting sealing mechanism is arranged in the middle of the interior of the supporting frame and used for sealing and limiting the airtight door. The utility model belongs to the technical field of air-tight door testing, and particularly relates to an air-tight door air-tight testing tool which aims at air-tight detection of an air-tight door, improves the sealing effect of the tool and the air-tight door, assists positioning of the air-tight door, and improves the observation effect of detection pressure and leakage points.

The invention discloses a leakproofness evaluation method and device for XAI gas stored in an underground gas storage. The method comprises the following steps: acquiring set parameters obtained by performing an XAI air tightness test and a rock core mechanical test on a rock sample of a surrounding rock layer of the underground gas storage; the set parameters are substituted into a fluid-solid coupling model, and the leakage range of the gas storage after the set operation time is obtained through simulation; according to the leakage range, the cavity size, the temperature and the pressure of the gas storage and the thickness and the porosity of each stratum, the leakage volume is determined; according to the leakage range and the leakage volume, the sealing performance of the XAI gas stored in the gas storage is evaluated. According to the method, the leakage range of the high-pressure XAI gas in the surrounding rock stratum of the underground gas storage can be quantitatively predicted through an experiment and simulation calculation method, reasonable evaluation of the sealing performance of the gas storage is achieved, and the method has important guiding significance on design and construction of a gas storage project.

The invention relates to the technical field of metal die-casting forming, and discloses a vacuum die-casting method for a high-reliability aluminum alloy motor end cover, which comprises the following steps: carrying out acoustic levitation purification treatment on an aluminum alloy melt; detecting the acoustic purity of the purified melt on line by adopting an acoustic characteristic sensing device; feeding the melt into a mold cavity for vacuum die-casting filling; and according to the detection result of the acoustic purity, an electromagnetic coil preset at the hot spot area of the mold is controlled in a feedforward mode, and magnetic field induction partition solidification of the hot spot area is achieved. According to the method, through the synergistic effect of melt purification and solidification control, micro bubbles and inclusions in the melt are removed through acoustic levitation purification firstly, then accurate magnetic field induction partition solidification is conducted on a hot spot area through feedforward control based on melt quality real-time data, formation of microscopic and macroscopic defects is effectively inhibited, and the quality of the melt is improved. The manufactured motor end cover is high in internal density and good in mechanical property and air tightness, and the product reliability is remarkably improved.

The invention relates to the technical field of blister product detection, in particular to blister product air tightness detection equipment which comprises a mounting plate, a side protection plate and the like. And a side protection plate is mounted on the mounting plate. The plastic uptake part is limited through the bottom plate and the limiting frame together, then the outer shell is covered with the cover plate, so that a closed space is formed in the outer shell, gas is input into the plastic uptake part through the three-way pipe and the guide pipe I, and the gas is detected through operation of the gas flow sensor; therefore, whether the air tightness of the plastic uptake part meets the production standard or not is judged, air tightness detection on the plastic uptake part is achieved, air is guided through the through holes in the side wall of the bottom plate, and therefore when leakage occurs at the containing cavity of the plastic uptake part, the air can flow out through the through holes in the side wall of the bottom plate, and the air tightness of the plastic uptake part is detected. And finally, the gas flows to the gas flow sensor and then is detected through the gas flow sensor, so that the problem that the detection accuracy is influenced as the gas cannot be discharged is avoided.

The utility model relates to the technical field of air tightness detection, and discloses an air tightness detection device for an automobile engine cylinder cover, which comprises a detection box, supporting cylinders are fixed at four corners of the outer wall of the detection box, a top cover is arranged on the top surface of the detection box, and the detection box and the top cover are made of sound insulation plates. And detection assemblies are arranged in the detection box and on the top surface of the top cover, and each detection assembly comprises a placement frame fixed on the bottom surface of the top cover. According to the utility model, a cooling system filled with an engine cylinder cover is filled with gas through the air pump, then the hydraulic cylinder is started to drive the placement rack to move into the detection box, and the detection box and the top cover are made of sound insulation plates, so that the interior of the detection box is kept in a quiet and relatively closed environment; at the moment, the engine cylinder cover is detected in four directions through the four ultrasonic receivers, and when leaked gas passes through a leakage hole, ultrasonic waves are generated and detected, so that airtightness detection of the engine cylinder cover is realized.

The invention relates to the technical field of air tightness detection, and particularly discloses a gearbox shell oil duct air tightness detection tool and a detection method. The gearbox shell oil duct air tightness detection tool integrates a test board, a mounting seat, a lifting mechanism, a transverse moving mechanism and an air tightness detection mechanism. According to an automatic cooperative operation mode, a gearbox shell to be detected is accurately positioned under the mounting seat by the transverse moving mechanism, and then the mounting seat and the air tightness detection mechanism are driven by the lifting mechanism to stably descend to a detection position, so that the tedious steps of traditional manual positioning and plug mounting are effectively replaced; and the overall efficiency and the automation level of the detection operation are obviously improved. The built-in sealing mechanism ensures that reliable preliminary sealing is formed when the air tightness detection mechanism is connected with the oil duct to be detected, and a structural foundation is laid for follow-up accurate detection of leakage of the oil duct body.

The utility model discloses a drawer type membrane desolventizing device which comprises a shell, a heating module, a condensing module and a membrane desolventizing module. The shell comprises a drawer shell and a device shell, and the drawer shell and the device shell are connected through a detachable part; the heating module and the condensing module are arranged in the device shell; the membrane desolventizing module is arranged in the drawer shell; the membrane desolventizing module comprises a pipeline inlet, a semi-permeable membrane pipeline and a pipeline outlet which are connected in sequence. According to the membrane desolventizing device disclosed by the utility model, the membrane desolventizing module is arranged in the drawer shell, and the heating module and the condensing module are arranged in the device shell, so that the membrane desolventizing module can be disassembled to replace a semi-permeable membrane pipeline by pulling out the drawer shell when the semi-permeable membrane pipeline needs to be replaced; after replacement, only the drawer shell needs to be pushed in and fixed through the detachable part, operation is very easy and convenient, and meanwhile the problem that due to the fact that other modules are detached, air tightness is poor or the modules are damaged is solved.

The utility model provides a bird viewer with optimized air tightness, which comprises an upper cover, a column body, a camera shooting unit and a base, the base is detachably connected with the column body, a sealing ring is sleeved on the column body, the outer wall of the sealing ring is connected with the inner wall of the base, and after the column body is connected with the base, the camera shooting unit is arranged on the upper cover. The pressure of the column body on the base is larger than the gravity of the column body. Compared with the prior art, due to the detachable connection design of the base and the column body, the outer wall of the sealing ring is connected with the inner wall of the base, the pressure of the column body on the base is larger than the gravity of the column body, the sealing ring can further make full contact with the base, and better air tightness is provided. And the third fastening structure and the fourth fastening structure are matched with each other, so that the column body and the base are clamped more firmly. Due to the design of the base sealing piece and the base liquid storage tank, after the liquid is contained, the outer wall of the base sealing piece abuts against the inner wall of the base liquid storage tank, and therefore a better waterproof effect is achieved.

The invention discloses a sealing structure for a test, and an aging test and leakage rate detection method and system. The sealing structure comprises a tested sealing assembly and an air cavity assembly integrated in the tested sealing assembly, and serialized test samples with different filling rates and compression rates are formed by regulating and controlling the groove width and the groove depth of a sealing ring mounting groove so as to simulate various actual sealing states. An aging test adopts a multi-factor coupling accelerated aging method, and a plurality of material characterization means are combined to systematically evaluate the evolution rule of the sealing performance. According to leakage rate detection, static pressure maintaining and dynamic pressure adjusting dual-mode measurement is achieved through an air tightness detector, and the sealing characteristics under different pressure conditions are comprehensively reflected. According to the invention, direct and systematic detection of the leakage rate of the sealing structure is realized, and an innovative solution is provided for sealing performance evaluation and service life prediction of electrical equipment.

The invention discloses an insulator air tightness detection device and method, and relates to the technical field of insulator air tightness detection.The insulator air tightness detection device structurally comprises a workbench, a support is fixedly connected to the top of the workbench, a central control system is fixedly connected to one side of the front face of the workbench, and a hydraulic cylinder is fixedly installed at the top of the support; a hydraulic rod is fixedly connected to the output end of the hydraulic cylinder, a sealing shell is arranged at the bottom end of the hydraulic rod, a printing mechanism is arranged on the surface of the sealing shell, and a detection table is arranged on the bottom side of the sealing shell. According to the insulator airtightness detection device and method, labels can be printed on the insulators which are detected to be unqualified, confusion and re-detection are avoided, automatic taking and placing of the multiple insulators are achieved, and the detection efficiency of the device is improved.