8055 results about "Gas cylinder" patented technology

The invention discloses a numerical control machine tool operation control system and a double-station sawing and drilling integrated machine tool, and relates to the technical field of numerical control machine tool operation. A multi-axis linkage state, a gas cylinder stress state, vibration frequency, cutting force and deformation data are acquired in real time through a data acquisition module; the dynamic modeling module constructs a digital twinborn model by using finite element analysis and real-time sensing data, and accurately simulates stress dynamic change and deformation trend; the intelligent error compensation module dynamically evaluates the multi-axis linkage precision by analyzing the machining data, generates an error compensation instruction and optimizes the operation parameters of the machine tool; the closed-loop feedback control module adjusts the cutting speed, the feeding depth and the clamping force in real time through a fuzzy logic algorithm, a closed-loop adjusting mechanism is formed, the machining precision and stability are greatly improved, the machining error and the workpiece surface damage risk are reduced, and the machining quality and efficiency of complex workpieces are effectively improved.

The invention provides a fuel cell hydrogen supply system and a hydrogen supply method. The fuel cell hydrogen supply system comprises a liquid hydrogen storage tank, a first gas path connected between the liquid hydrogen storage tank and a fuel cell, a second gas path connected in parallel with the first gas path, and a control assembly, a gasification device is arranged on the first gas path, and a gas storage bottle is arranged on the second gas path; the control assembly comprises a controller and a plurality of control valves; the controller controls the plurality of control valves and can respectively control the connection or disconnection of the first gas path and the second gas path, so that the liquid hydrogen in the liquid hydrogen storage tank is conveyed to the fuel cell through the first gas path, and when the pressure of the gaseous hydrogen in the liquid hydrogen storage tank exceeds a first preset pressure threshold value, the gaseous hydrogen is stored in the gas storage bottle through the second gas path; and hydrogen can be supplied to the fuel cell through the second gas path. According to the fuel cell hydrogen supply system, gaseous hydrogen exceeding the first preset pressure threshold in the liquid hydrogen storage tank can be recycled, so that the release of the gaseous hydrogen to the outside is reduced, and the waste of resources is reduced.

The invention discloses an SF6 degradation device and method based on gas-liquid two-phase dielectric barrier discharge plasma. The device comprises a gas inlet control module, a dielectric barrier discharge reaction module, an alkaline solution tank and an alkaline solution supply module, the gas inlet control module comprises a gas distributing and mixing unit, an SF6 gas cylinder and an inert gas cylinder, wherein the SF6 gas cylinder and the inert gas cylinder are connected with the gas distributing and mixing unit. The dielectric barrier discharge reaction module comprises a dielectric barrier reactor and a plasma power supply externally connected to the dielectric barrier reactor, and the dielectric barrier reactor is used for exciting inert gas in the mixed gas into plasma by using an electric field and degrading SF6 gas in the mixed gas based on the electric field and the plasma to obtain low-fluorine sulfide. The plasma is utilized to excite the alkaline solution to generate hydroxyl ions, the low-fluorine sulfide is degraded based on the hydroxyl ions, and degraded tail gas is obtained; and the alkaline solution tank is connected with a gas outlet of the dielectric barrier reactor. According to the invention, efficient harmless degradation of SF6 can be realized.

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 multi-fidelity data fusion and physical constraint-based cold heading process parameter staged optimization method, which comprises the following steps of: 1) performing calculation through Deform finite element simulation and an empirical formula, constructing a multi-fidelity initial data set, and improving data consistency through normalization and deviation calibration; 2) constructing a multi-fidelity physical information neural network (PINN) model, and establishing a mapping relation between process parameters and forming quality indexes by adopting a staged training strategy and an adaptive weight adjustment mechanism; and 3) verifying the generalization ability of the model by dividing a training set and a test set, ensuring that a prediction result accords with a volume conservation criterion and a material forming limit, and realizing optimization of cold heading process parameters. According to the method, through multi-fidelity data fusion and physical information embedding, on the basis of enhancing a physical mechanism and multi-data collaboration, the data acquisition cost is reduced, and the generalization of the model is improved; and through dynamic weight distribution and a staged training strategy, the prediction precision and reliability are improved.

High pressure compressed gas pressure vessels and devices utilizing such vessels are disclosed herein. More particularly, aspects of the present invention are directed to high pressure (i.e., nitrogen or N2 based) pressurized gas cylinders with pierceable membranes recessed from the opening of the pressure vessel such that prior art piercing mechanisms cannot pierce the membrane for safety purposes. Additionally, aspects of the present invention are directed to pressurized gas operated devices with elongated pins for piercing pressure vessels with recessed pierceable membranes.

Disclosed is a propeller, including a main driving device. Foldable blades and a fixed propeller are detachably connected to a projecting shaft of a driving motor. When the foldable blades are arranged, the propeller can be used as a hydrofoil board booster, and be clamped to a vertical rod of the hydrofoil board. When a fixed propeller is surrounded by a water flow culvert pipe provided with water inlet grooves, the propeller can be handheld with a handheld bracket or worn to advance and play underwater. Further, the propeller can be used as a guiding device for a diving apparatus. In combination with a gas cylinder and an airbag, the propeller can also be used as a scuba gear. Together with movable and fixed hydrofoil boards, the propeller can also be used as a gliding apparatus for diving.

The present invention provides a wine barrel, belonging to the technical field of wine and beverage drinking equipment. It solves the problem of gas waste caused by premature release of gas from gas cylinders in existing wine barrels during transportation and storage of empty barrels. The wine barrel includes a barrel body, a gas cylinder is provided in the barrel body, and a gas cylinder valve is provided on the gas cylinder. The top of the gas cylinder has a bottle mouth and a piston hole is provided in the bottle mouth. A piston is slidably provided in the piston hole. A closed pressure chamber is formed between the upper side of the piston and the inner wall of the piston hole. A trigger disk is also provided in the bottle mouth and is located on the lower side of the piston. The trigger disk includes a main body slidably connected to the bottle mouth, a limit portion is provided on the bottle mouth that can limit the upward movement of the trigger disk, and a vent is provided on the main body that connects the space between the trigger disk and the piston to the inner cavity of the barrel body. The present invention can prevent gas waste caused by premature release of gas from gas cylinders in the wine barrel during transportation and storage of empty barrels.

The invention discloses a gas cylinder storage leakage point positioning detection method and system, and the method comprises the steps: building a gas cylinder leakage model under the conditions of no wind and wind, simulating a leakage process through a gas turbulence diffusion model, and introducing a sensor array to detect a gas leakage point; an adaptive filtering algorithm AF is introduced to carry out noise removal on data detected by the sensor array; extracting time difference information hidden in a gas sensor signal by using continuous wavelet transform (CWT) and a modulus maximum value method, judging the position of an optimal leakage point, and obtaining positioning information of a certain time point; a window function is introduced into a Kalman filtering algorithm, multiple sets of positioning information at different time points are obtained through processing of the improved Kalman filtering algorithm, interference of measurement invalid signals not in the range of the window function is filtered out, and the optimal positioning point is estimated. Compared with the prior art, the sensor array is introduced to realize leakage detection and positioning, a window function of a related time point is introduced into Kalman filtering, and the detection accuracy is effectively improved.

The invention discloses a chassis arrangement structure of a hydrogen fuel cell tractor. The chassis arrangement structure comprises a frame, a bottle rack, a fuel cell radiator, a high-pressure accessory and a plurality of hydrogen conveying bottles, the frame is sequentially provided with a cab position, a gas cylinder position and a cargo compartment position in the longitudinal direction. The cylinder rack is arranged at the gas cylinder position and located on the upper end face of the frame, and a mounting end is arranged on one side of the frame in the transverse direction; the plurality of hydrogen storage bottles are mounted on the bottle rack and are sequentially arranged in the vertical direction, and the hydrogen storage bottles are arranged in the width direction of the frame; the fuel cell radiator comprises a refrigeration main body and a cooling fluid pipeline, the refrigeration main body is mounted at the mounting end, and the cooling fluid pipeline is connected with the refrigeration main body; and the high-pressure accessory is mounted on one side of the frame in the transverse direction and avoids the bottle rack, the hydrogen storage bottle, the refrigeration main body and the cooling fluid pipeline. According to the scheme, the length of the hydrogen storage system in the whole vehicle driving direction is greatly reduced, the main hanging gap is increased, the adaptation rate of a trailer is increased, the space utilization rate of a frame is increased, and the maintenance convenience of high-pressure accessories is improved.

Embodiments described herein provide a self-contained, above-the-counter beverage dispenser that allows for personalization of flavor intensity, temperature, and carbonation levels. The system can have a small form factor that allows it to sit on a countertop and below upper cabinetry. The dispenser can dispense carbonated beverages, still beverages, flavored beverages, hot beverages, cold beverages, and combinations thereof. Moreover, unlike existing systems, embodiments described herein may maintained by a user without special training, tools, or technical expertise. The dispenser can include consumable components, such as ingredient cartridges, a gas cylinder, and a filter. Each of these consumable components can be replaced easily without any tools or special training or expertise. Additionally, all consumables can be accessible behind a door on the front of the machine, making them readily accessible by only opening the front door.

The invention designs a linear heave compensation device based on a composite cylinder, belongs to the technical field of ocean engineering equipment, adopts a heave compensation scheme of a double-composite-cylinder structure comprising a heave compensation execution cylinder and an integrated control cylinder, and is provided with a plurality of functional cavities; the working gas cylinder group is communicated with a rod cavity of the heave compensation execution cylinder through the gas-liquid converter to provide passive compensation force for the heave compensation execution cylinder; oil is alternately supplied to inner cavities of the two composite cylinders in a control mode of direct driving of the two-way variable pump, and active compensation force is provided for the heave compensation execution cylinder; for an underwater high-pressure environment, deepwater pressure acts on a piston rod of the integrated control cylinder and a piston rod of the heave compensation execution cylinder at the same time, and the water depth compensation function is achieved through offset of internal pressure of the double cylinders. Multiple functions such as passive compensation, active compensation and water depth compensation are achieved, multiple working condition operations such as water, splash zone passing and landing can be continuously completed, the two-way variable pump is adopted to directly drive the compensation execution cylinder, the response speed and the control precision are improved, and the beneficial effects of being low in energy consumption, compact in structure, integrated in multiple functions and the like are achieved.

The invention relates to the technical field of high-pressure gas cylinder control, and discloses a high-pressure gas cylinder valve pressure dynamic monitoring and self-adaptive adjusting method. The method comprises the following steps: dividing a high-pressure gas cylinder valve into a plurality of monitoring units, and obtaining pressure, temperature and flow data of each unit to form a comprehensive monitoring data set; establishing a pressure stability evaluation index and an environmental factor influence evaluation index based on the data set, and generating an initial risk value by applying a probability early warning mechanism and an adaptive prediction model; dynamically correcting the initial risk value and outputting a corrected risk value according to spatial relevance or time sequence dependency of adjacent monitoring units; and finally, the corrected risk values are sorted, a priority control instruction list is generated, and a control execution unit is combined to output a self-adaptive adjustment signal so as to adjust the opening degree of the valve. According to the method, comprehensive monitoring and dynamic adjustment of the high-pressure gas cylinder valve are achieved, and the operation stability of the valve is improved.

The utility model relates to a salt cavern sediment gap energy storage simulation experiment device, and belongs to the technical field of salt cavern sediment gap energy storage experiment equipment. The salt cavern sediment gap energy storage simulation experiment device comprises two groups of normal pressure experiment containers, a pressure-resistant experiment container, a gas storage bottle, a water storage tank and a gas-liquid separator, the two groups of normal-pressure experiment containers are connected with each other through a communicating short circuit; the gas storage bottle is connected with a gas-liquid separator through a flow controller A and a gas injection valve A; one end of the gas-liquid separator is connected with the upper ends of the normal-pressure experiment container and the pressure-resistant experiment container through switch valves which are connected in parallel; and the outlet ends of the communicating pup joint and the pressure-resistant experiment container are respectively connected with a liquid phase pipeline through a control valve. The simulation experiment device is compact in structure and ingenious in design, solves the problems that in an existing salt cavern energy storage simulation experiment, an experiment under pressure cannot be carried out, and the experiment function is single, and is particularly suitable for being used in a salt cavern sediment gap energy storage simulation experiment.

The invention discloses multifunctional threaded fastener welding equipment, and relates to the technical field of welding equipment.The multifunctional threaded fastener welding equipment comprises a bearing frame and a fixing frame, the fixing frame is arranged in front of the bearing frame, a mechanical arm is arranged at the top of the bearing frame, and a welding device is arranged at the top of the mechanical arm; a butt joint device and a clamping device are arranged on the left side of the fixing frame. The gas bottle is installed on the mechanical arm, the flow and pressure of gas are controlled through the pressure reducing valve, the current flow is checked through the flow meter, the gas is conveyed into the plasma arc welding gun through the pipeline, the gas is output from the output port of the plasma arc welding gun during welding, and a welding area can be prevented from making contact with oxygen through protective gas; therefore, oxidation and impurities are avoided, the welding quality is improved, when the gas cylinder is installed, an operator can replace the gas cylinder more quickly and more conveniently by quickly installing and disassembling the gas cylinder, and the shutdown time caused by replacement of the gas cylinder is avoided.

The present invention discloses an intelligent self-powered active suspension with multi-level adjustable height in the automotive field and a working method thereof. The rod ends of the cylinder rod extending into the oil cylinder are all guide ends composed of a guide, a screw and a nut. There is no seal between the outer wall of the guide and the inner wall of the oil cylinder. The screw and the cylinder rod are provided with oil guide grooves that penetrate the rodless cavity and the rod cavity, and there is no need to consider the sealing problem. A non-closed working oil circuit is adopted, and a suspension height adjustment device comprises a first and a second height adjustment oil and gas cylinders with unequal volumes. The first height adjustment oil and gas cylinder, a third solenoid valve, a high-pressure gas storage tank, a first non-return valve, an electric air compressor unit and a low-pressure gas storage tank are connected in series in sequence, and energy can be pre-stored in advance. Four-speed height control is achieved by two parallel-connected height adjustment oil and gas cylinders with different volumes, so that the vehicle body can be at a low height when the vehicle is driving at high speed, at a normal height when the vehicle body is in urban conditions, and at a height when the vehicle body is driving on bumpy roads. The vehicle body can also be rescued from a pit when the wheel is stuck in it.

The invention relates to a microcosmic visualization underground reservoir two-phase flow displacement experiment system and method, and the system comprises a microcosmic seepage chip, and an injection module, a microcosmic holder, a pressure and temperature acquisition control module, a gas metering module and a data and image acquisition module which are connected in sequence; a microscopic seepage chip is clamped in the microscopic clamping device; the injection module comprises an N2 gas cylinder, a hydrogen generator, a piston container, an injection pump and a pressure regulating valve; the pressure and temperature acquisition control module comprises an annular pressure tracking pump, a pressure return unit, a temperature sensor and a heating unit. The pressure return unit comprises a pressure return valve, a pressure return container and a pressure return pump. Compared with the prior art, the seepage condition of the two-phase flow in the model and the residual gas phase distribution condition after the two-phase flow passes through gas drive water, water drive gas, polymer drive and other chemical drive can be visually observed, and the accuracy of experimental data is ensured.

The invention belongs to the technical field of automatic control, and discloses an air inflation control method and device for an aerial work suit, equipment and a storage medium, when it is detected that a compressed air cylinder on the aerial work suit is started to inflate a protective air bag, air pressure sensing data and temperature sensing data in the compressed air cylinder are collected in real time; calculating a deviation value between the air pressure sensing data and the standard air pressure data and a deviation value between the temperature sensing data and the standard temperature data; when any deviation value reaches a specified threshold value, differential calculation is carried out on the deviation value to obtain an air pressure change rate signal and a temperature change rate signal, the air pressure change rate signal and the temperature change rate signal are fused to obtain a fused change rate signal, and the fused change rate signal is input into a pre-trained prediction model to obtain a target control parameter; and the inflation rate of the compressed gas cylinder is adjusted according to the target control parameters, so that the inflation rate is adjusted in real time through feedback of the pressure and temperature in the compressed gas cylinder, excessive inflation is avoided, accidents are reduced, the control accuracy is improved, and the safety performance is improved.

A natural gas filling device reliable in sealing is disclosed. The device is characterized in that the device comprises a liquid filling gun, a liquid receiving component matched with the liquid filling gun and used for filling a gas cylinder with liquid, and a gas returning component communicated with the gas outlet of the gas cylinder; the liquid filling gun is provided with a first outer shell, a first rotating fastener disposed in the first outer shell and connected to the first outer shell and the inner wall of which is provided with a symmetrical spiral groove, a first valve body between the first rotating fastener and the first shell, and a first valve core disposed in the first valve body and containing a liquid inlet and a liquid outlet; and the liquid receiving component is provided with a first shell, wherein the head of the first shell extends into the first rotating fastener and is in sealing match with the tail part of the first valve body, and the periphery of the first shell is provided with a first pivot pin engaged with the spiral groove in the first rotating fastener. The device is convenient in maintenance, replacement and operation of quick-wear parts and convenient to use. The device can be used for other low-temperature liquid media besides LNG and is simple in structure, low in cost, convenient in operation and reliable in sealing.

The invention discloses a traceable flue gas flow measurement system and method for a large-diameter chimney, and belongs to the field of flue gas flow measurement. The system comprises a tracer gas cylinder used for containing a tracer; the flow controller is used for controlling the output flow of the tracer agent; the tracer agent output from the flow controller is injected into the upstream position of the chimney pipeline through the tracer agent injection probe so as to be mixed with the flue gas; the tracer sampling probe is mounted at the downstream position of the chimney pipeline and is used for extracting a mixed gas sample through a gas pump; and the gas analyzer is used for analyzing the obtained gas sample and calculating the volume flow rate of the flue gas in the chimney pipeline. According to the invention, the volume flow of the flue gas in the chimney is directly calculated by monitoring the concentration change of the tracer agent in the flowing process in the pipe, so that the accuracy of flow measurement is improved, and the measurement result has traceability.

A toy gun and a gas cylinder piercing structure are provided. The gas cylinder piercing structure includes a screw base and a movable push rod unit. The screw base includes a circular through-hole and an annular block around it. A top of the annular block has a slot. The movable push rod unit includes a round push rod movably inserted in the circular through-hole, and a return spring between the screw base and the round push round. A top of the round push rod has a striker pin. The striker pin extends with a needle portion. The striker pin has an engagement lug and a notch. When the engagement lug is blocked by the annular block, the round push rod completely fills the circular through-hole. When the engagement lug is engaged with the slot, the notch and the circular through-hole together form an air vent channel.

The utility model discloses a rocket type catching net launching device which comprises gun barrels, gas bombs, a percussion mechanism, a catching net, a cartridge receiver and a folding telescopic rod, the gas bombs are arranged in the corresponding gun barrels, the percussion mechanism is arranged at the tail ends of the gun barrels, the catching net is connected with the gas bombs, and a fixing part is fixedly installed at the front end of an inner cavity of the cartridge receiver. The tail end of the gun barrel is detachably installed on the front side of the fixing component, and the folding telescopic rod is arranged at the front end of the gun barrel. The high-pressure gas cylinder is adopted as launching power, compared with power sources such as ammunition and fuel, higher safety is achieved, materials are easy to obtain, cost is lower, the unfolding angle of the gun barrel can be freely adjusted according to actual requirements, the larger the unfolding angle is, the higher the unfolding speed of the catching net is, and the closer the flying distance is. The method is suitable for close-range combat; otherwise, the smaller the unfolding angle is, the slower the unfolding speed of the catching net is, the farther the flying distance is, and the catching net is suitable for long-distance combat.

The invention belongs to the technical field of gas cylinder accessories, and particularly relates to an IV-type gas cylinder hoop and a fixing device. The device comprises a gas cylinder bandage, a radial expansion mechanism, a support, a gas cylinder support guide mechanism, a sliding base and a plurality of diameter compensation mechanisms with different thicknesses. The radial expansion mechanism is composed of a radial expansion guider I, a radial expansion compensator, a radial expansion guider II and a bandage locking nut from top to bottom, and the radial expansion compensator is a spring; a sliding groove is formed in the support. The two tail ends of the gas cylinder bandage penetrate through the corresponding sliding grooves through welded studs and are screwed to be installed on the support together with the radial expansion mechanism. The device is easy to assemble, high in efficiency, good in product interchangeability and consistency, and capable of absorbing the swelling amount of the gas cylinder in the diameter direction and the length direction due to the modular and lightweight design.

High pressure compressed gas pressure vessels and devices utilizing such vessels are disclosed herein. More particularly, aspects of the present invention are directed to high pressure (i.e., nitrogen or N2 based) pressurized gas cylinders with pierceable membranes recessed from the opening of the pressure vessel such that prior art piercing mechanisms cannot pierce the membrane for safety purposes. Additionally, aspects of the present invention are directed to pressurized gas operated devices with elongated pins for piercing pressure vessels with recessed pierceable membranes.

The invention discloses an electric propulsion high-pressure fluid micro-flow control system and belongs to the technical field of electric propulsion flow control. The problems that an existing pressure reduction system is poor in control precision and low in reliability when working frequently are solved. An outlet of a gas cylinder is connected with a gas inlet of a proportional valve through a gas transmission channel, and a self-locking valve and a pressure adjusting system are sequentially arranged on the gas transmission channel; the proportional valve is connected with three third electromagnetic valves at the same time and is respectively used for controlling the on-off of the anode branch, the cathode branch A and the cathode branch B; the pressure sensor PIII is arranged at an air outlet of the proportional valve and used for collecting the pressure of the air outlet of the proportional valve; the pressure adjusting system collects the pressure of the gas transmission channel and sends the pressure to the controller, and the controller controls the pressure adjusting system, the proportional valve and the three third electromagnetic valves according to the pressure of the gas transmission channel, the pressure of the pressure sensor PIII and the working mode of the system. The method is suitable for electric propulsion system control.

The invention provides a water-rock reaction simulation device capable of realizing more sufficient water pressure reaction and more accurate simulation of underground water-rock reaction and a use method thereof, and relates to the technical field of water-rock reaction processes. The water-rock reaction simulation device comprises a reaction kettle, a constant-temperature box, a carbon dioxide gas cylinder, a nitrogen gas cylinder, a liquid adding tank, a piston intermediate container, a constant-speed constant-pressure pump and a vacuum pump, an exhaust pipe, a liquid taking pipe, an air inlet pipe and an exhaust pipe are arranged on the reaction kettle; a reaction kettle fixing mechanism is arranged in the constant-temperature box, the reaction kettle fixing mechanism is rotatably connected with the constant-temperature box through a horizontal shaft, and the constant-temperature box is also internally provided with a reaction kettle fixing mechanism connected with the constant-temperature box; the reaction kettle is arranged in the constant-temperature box through a reaction kettle fixing mechanism; and one ends of the carbon dioxide gas cylinder, the nitrogen gas cylinder and the piston intermediate container are respectively connected in parallel on the gas inlet pipe through a second on-off valve, a third on-off valve and a fourth on-off valve. According to the method, more data can be provided for actual production for reference.

The invention relates to cable pyrolysis test equipment in the technical field of cable pyrolysis. The cable pyrolysis test equipment comprises a contact gas detection device, a non-contact gas detection device, a cooler, a gas collection bottle, a gas collection sleeve and a high-pressure bottle, the gas collection bottle comprises a bottle body part and two bottle neck parts, the bottle body part is made of a transparent heat-resistant material capable of expanding along with internal pressure, outer ports of the two bottle neck parts are respectively provided with a gas inlet and a gas outlet, and the non-contact gas detection device performs gas detection corresponding to the bottle body part; the gas collection sleeve comprises a heat transfer sleeve section, two heat insulation sleeve sections and two transition sleeve sections, the outer end walls of the two transition sleeve sections are sleeved with sealing hoops in a clamped mode, the end walls of the two transition sleeve sections are provided with a gas inlet pipe and a gas outlet pipe respectively, the gas inlet pipe is correspondingly communicated with a bottle opening of the high-pressure bottle, and the gas outlet pipe is correspondingly communicated with a gas inlet of the gas collection bottle; gas discharged from an exhaust port of the gas collecting bottle enters a cooler to be cooled and then is guided into a contact type gas detection device; according to the test equipment, characteristic gas can be more completely collected, and the detection diversity and accuracy are improved.

The invention relates to the technical field of medium phase state determination, in particular to a PVT analyzer and method suitable for multi-component fluid medium phase state determination, and the PVT analyzer comprises a determination assembly, a test cylinder, a balance cylinder, a pressurization cylinder, a gas distribution pipeline, a first driving mechanism and a second driving mechanism. The structure is reasonable and compact, combination of gas with various components can be achieved through the multiple gas cylinders and the gas distribution pipeline, mixing of the gas according to the set ratio can be achieved by adjusting the gas distribution valve, the multiple gas cylinders can inject the gas into a rodless cavity of the pressurization air cylinder through the gas distribution valve and the gas distribution pipeline, and the gas injection efficiency is improved. The second driving mechanism drives the piston rod of the pressurizing air cylinder to continuously input gas in the rodless cavity of the pressurizing air cylinder into the rodless cavity of the balance air cylinder through the pressurizing pipeline and the one-way valve, so that the pressure of the rodless cavity of the balance air cylinder can be increased; and the precise gas distribution and gas pre-pressurization functions of multi-component gas can be realized.

A tool less method of connecting a welding-type power source with a cart is disclosed. In some examples, the cart may be configured to carry one or more gas bottles (and / or cylinders). In some examples, the power source housing and the cart may connect at interfacing ends and / or walls of the housing and cart. A connector, such as a clip for example, may span the interface to connect the power source housing and the cart. Catches (e.g. slots, holes, crevices, and / or protrusions) may be formed in and / or on the power supply housing and / or cart proximate to the interfacing ends and / or walls. In some examples, the catches may be aligned. In some examples, the cart and / or power source housing may include alignment surfaces to assist with alignment. The connector may engage the aligned catches to connect the welding-type power source and cart together at the interface.

The liquefied gas bottle intelligent management terminal comprises an intelligent hand wheel assembly and an angle valve, a shell of the intelligent hand wheel assembly is made of high-temperature-resistant fireproof plastic, a bottom groove of the intelligent hand wheel assembly is matched with a valve element screw of the angle valve and locked through a fixing nut, and a positioning module and a rotation direction sensor are embedded in an upper cover. A battery compartment, a circuit board and an information storage chip are arranged in the shell, and a touch switch is arranged on the outer wall of the shell; the positioning module adopts a multi-band base station positioning chip, and the rotation direction sensor is an integrated sensor of a three-axis gyroscope and an accelerometer; the terminal can collect information such as the position of a gas cylinder and the opening and closing state of an angle valve, and the information is encrypted and uploaded to the cloud server through the wireless communication module. According to the system, the position and the opening and closing state of the gas cylinder can be monitored in real time by integrating the positioning module, the sensing module and the like, the safety of filling information is guaranteed by utilizing a block chain, intelligent early warning of abnormity and cloud analysis of data can be realized, a report can be generated to assist management, and the safety and efficiency of liquefied gas cylinder management are improved.