1614 results about "Pneumatic valve" patented technology

The invention relates to a method (2000, 2000') for operating a pneumatic system (1200), comprising the steps: - Providing (2100) compressed air (120), - Routing (2200) the compressed air (120) via at least one first pneumatic line (10) to a compressed air supply connection (2), - Routing (2300) the compressed air (120) from the compressed air supply connection (2) via at least one second pneumatic line (316) of a connected pneumatic system (300), - Energizing (2420) at least one pneumatic solenoid valve (20) selectively with a heating control current (S I2 ) to heat at least one of the pneumatic solenoid valves (20), and - Energize (2430) at least one of the pneumatic solenoid valves (20) with a deflection control current (S I1 ), which is greater than the heating control current (S I2) is to be deflected from a basic position (G). The invention further relates to a corresponding pneumatic system (1200), a compressed air supply system (100) and a pneumatic system (300) for a pneumatic system (1200) and a vehicle with a pneumatic system (1200).

A pneumatic valve is proposed, comprising a fluid supply port (P), a fluid outlet port (A), and a fluid drain port (R), a valve chamber (14) with a fluid supply port (FZ) connected to the fluid supply port (P), a fluid outlet port (VH) connected to the fluid outlet port (A), and a trigger port (VT) connected to an actuator chamber (15) of the valve, which includes the fluid drain port (R), an actuator (16) which, in the unactuated state of the actuator (16), presses a sealing element (E) against the trigger port (VT) and, in the actuated state of the actuator (16), releases the trigger port (VT), and a diaphragm (M) which divides the valve chamber (14) into two areas, a first area (1) being connected to the trigger port (VZ) and a second area (2) being connected to the fluid outlet port (VH), wherein the diaphragm (M) is connected to a The plunger (S) is connected,which is pressed against the fluid drain opening (VH) by a spring force in the unactuated state and releases the fluid drain opening (VH) in the actuated state of the actuator (16), wherein the diaphragm (M) has at least one through-opening (D) through which fluid can flow from the first region (1) to the second region (2), wherein the through-opening (D) has a smaller cross-section than the trigger opening (VT).

The invention provides a fluid pipe network intelligent management and control system and method based on multi-order spatial-temporal feature fusion, and the system comprises an embedded Internet of Things sensing layer which comprises an electric valve control mainboard and / or a pneumatic valve control mainboard embedded with a remote information transmission module, the flow sensor, the heat sensor and the water invasion sensor are connected with the control mainboard; the multi-order spatio-temporal feature processing layer comprises a spatio-temporal feature extraction module configured to perform sliding window slicing processing on time sequence data of pressure, flow velocity and temperature parameters; and the feature fusion module is configured to perform feature alignment on the vibration atlas, the voiceprint signals and the infrared thermal imaging data through a multi-head attention mechanism. According to the fluid pipe network intelligent management and control system and method based on multi-order spatio-temporal feature fusion, the management and control efficiency and safety of the fluid pipe network are remarkably improved through embedded multi-source sensing, multi-order spatio-temporal feature fusion and an intelligent decision framework.

The invention discloses a pneumatic valve intelligent control method based on deep reinforcement learning, and relates to the technical field of automatic control. The method comprises the following steps: step 1, establishing a dynamic model of the pneumatic valve according to real-time operation parameters in a multi-physical coupling behavior of the pneumatic valve; 2, defining a state space of the pneumatic valve control system according to the kinetic model; 3, inputting the state space into a pre-established deep reinforcement learning model, and outputting a real-time electromagnetic control current for the pneumatic valve; the deep reinforcement learning model is a double-deep Q network and comprises two same deep Q networks so as to relieve an over-estimation problem; each deep Q network is provided with a single hidden layer, and the weight and the bias of the hidden layer are correspondingly equal to the weight and the bias of the output layer respectively. According to the method, the problems of response lag, difficulty in parameter self-adaption and high energy consumption of a traditional control strategy under a complex working condition are solved, and the intelligent level of a control system is remarkably improved.

The invention provides an organic waste gas treatment device based on zeolite molecular sieve adsorption and desorption treatment. The organic waste gas treatment device comprises an efficient pretreatment unit, a composite zeolite molecular sieve adsorption tower group, a plasma-assisted microwave-hot air regeneration unit, a multi-mode tail gas treatment unit, a digital twin intelligent regulation and control system and a modular expansion interface. By integrating the high-precision VOCs analyzer, the self-adaptive airflow controller, the infrared spectrometer, the multi-channel heat recoverer, the high-performance edge computing server and the intelligent pneumatic valve system, the optimized processing method realizes accurate execution of a formula, the VOCs removal rate is remarkably increased, and carbon loss and energy consumption are reduced. The method has the remarkable advantages in the aspects of VOCs removal rate, zeolite regeneration efficiency, energy consumption control and operation cost, meanwhile, through deep intelligent regulation and multi-mode treatment, the efficient, stable and low-cost VOCs treatment requirements under complex working conditions are met, and an innovative solution is provided for industrial waste gas treatment.

A pneumatic valve arrangement is specified, including a valve island having at least two solenoid valves, and at least two process valves, the process valves each including a working piston which delimits a pressure chamber, the solenoid valves being each set up to open or close a flow path from a pressure source to an associated process valve to apply a working medium on the pressure chamber of the associated process valve to open and / or close the process valve. Each process valve comprises a position measuring system which is set up to continuously detect an open position of the process valve. The valve island includes a control unit which is communicatively connected to the position measuring systems of the at least two process valves via one single digital communication interface arranged on the valve island.

The utility model discloses a polyester reverse esterification kettle on-line adding device which comprises a first esterification kettle and a second esterification kettle, a batching pipeline is arranged between the first esterification kettle and the second esterification kettle, and a three-monomer on-line injection system is arranged on one side of the batching pipeline. A second static mixer, a dynamic mixer and a pneumatic valve are sequentially arranged on the batching pipeline between the three-monomer on-line injection system and the second esterification kettle, and materials prepared by the three-monomer preparation system are injected into a connecting pipeline through the three-monomer on-line injection system; and then the mixture enters the second static mixer and the dynamic mixer to be mixed and then is injected into the second esterification kettle through the pneumatic valve. The transformation from production of extinction products to production of cationic products can be quickly realized in the five-kettle process, so that the productivity and the quality of the products are ensured, and benefits are created for enterprises to be maximized.

The utility model discloses a squat silo multipoint discharging device, which relates to the technical field of bin discharging and comprises a distributing bin arranged at a feeding port above a squat silo, a central blanking pipe is arranged at the bottom of the distributing bin and communicated with a cavity of the distributing bin, and the distributing bin is provided with a discharging port. A discharging port of the center discharging pipe right faces the middle position in the squat silo, the center discharging pipe is used for laying the bottom of the squat silo, a plurality of side elephants are further arranged on the side wall of the material distribution bin in a downward inclined mode around a shaft and communicated with a cavity of the material distribution bin, the free ends of the side elephants extend towards the side wall of the squat silo, and the center discharging pipe is arranged on the side wall of the material distribution bin. A plurality of blanking openings are formed in the side articulated chutes in the length direction, a first pneumatic valve and a second pneumatic valve are arranged at the positions where the center blanking pipe and the side articulated chutes communicate with the distributing bins correspondingly, and the center blanking pipe and the side articulated chutes are used for blanking in a matched mode, so that materials are evenly stacked; and the problems of serious material grading and unbalance loading of the silo wall existing in the original single blanking point are reduced.

The invention discloses a low-pressure driven and rotatable pneumatic head diaphragm valve, and belongs to the technical field of diaphragm valves, the low-pressure driven and rotatable pneumatic head diaphragm valve comprises a pneumatic head rotatably mounted on a valve body base, the pneumatic head comprises a pneumatic head base, a pneumatic head body and a gland, a driving air source inlet is formed in the side face of the pneumatic head body, a plurality of pistons are arranged in a cavity of the pneumatic head, and a driving air source is arranged in the driving air source inlet. And elastic pieces are arranged between the gland and the pistons and between the pistons. According to the low-pressure-driven and rotatable pneumatic head diaphragm valve, the driving air source inlet is formed in the side face of the pneumatic head, the pneumatic head can rotate by 360 degrees on the valve body base, and the low-pressure-driven and rotatable pneumatic head diaphragm valve can adapt to various installation occasions for installation and is used for various working conditions; the multiple pistons are arranged in the pneumatic head, the elastic pieces are arranged between the pistons and the gland and between the pistons, when the pneumatic valve is opened, the pressure of the two sets of elastic pieces needs to be resisted at the same time, and therefore the force value of the elastic pieces is increased, the stacked pressure of the elastic pieces is balanced under the condition that the driving pressure is not changed, and valve abrasion is prevented.

The utility model discloses a pneumatic valve actuator of a long-stroke shifting fork structure. The pneumatic valve actuator comprises a piston cylinder assembly, a box body assembly and a spring assembly. The box body assembly comprises a box body in butt joint with the front end of the cylinder body and a guide block arranged in the box body and used for bearing the piston rod and guiding operation of the piston rod. The spring assembly comprises a spring barrel connected with the front end of the box body, a spring seat arranged in the middle of the tail end in the spring barrel, a supporting spring arranged on the spring seat in a sleeving mode and a spring rod connected with the supporting spring and arranged in the spring barrel, and the box body assembly with a shifting fork and the spring assembly with the spring rod are sequentially arranged at the braking end of the piston cylinder assembly. A piston rod pair shifting fork transmission structure is adopted, torque complementation is well formed with a traditional product, the piston cylinder assembly, the box body assembly and the spring assembly are assembled into a whole, the appearance of the actuator is slender, the gravity center of the actuator is centered, and the operation reliability of the valve starting actuator is improved.

The invention relates to the technical field of pressure valves, and provides a high-back-pressure pneumatic valve for a semiconductor chemical system and an assembling method of the high-back-pressure pneumatic valve. The high-back-pressure pneumatic valve comprises an air cylinder assembly, a diaphragm and a valve seat. The cylinder assembly is provided with a cylinder upper cover and a cylinder body which are connected through a rotary lock catch structure, and the piston is assembled on the cylinder body. The diaphragm is provided with a sealing diaphragm part and a valve element integrally arranged in the center, the sealing diaphragm part is provided with a pressure-bearing protrusion and a sealing hook, and the pressure-bearing protrusion provides a back pressure counteracting area accounting for 25%-50% of the flexible area of the diaphragm. A valve port and a flow channel are formed in the valve seat, a mounting hole aligned with the valve port is formed in the valve seat, a sealing clamping groove is formed in the mounting hole, and the sealing clamping groove and the sealing hook are matched to form a sealing interface. The valve element table body is arranged at the valve port and driven by the air cylinder assembly to seal or break away from the valve port. According to the invention, high-back-pressure fluid impact can be effectively balanced, and the assembly efficiency and the maintenance convenience are greatly improved.

A damping member for a pneumatic valve of a pneumatic system of a vehicle, in particular a utility vehicle, a pneumatic system, a vehicle, a method, a computer program and / or a computer-readable storage medium are provided. A damping member (100) for a pneumatic valve (205) of a pneumatic system (201) of a vehicle (200a), in particular a utility vehicle (200b), where the valve (205) comprises an air outlet section (210) for discharging pressurized air (220); wherein the damping member (100) is adapted to be mounted to the air outlet section (210) for damping acoustic emissions of the pressurized air (220); the damping member (100) comprises a bracket structure (105); and the support structure (105) is adapted to damp acoustic emissions of the pressurized air (220) by conducting air (220) through the support structure (105).

The invention discloses a fault monitoring sealing ball valve, belongs to the technical field of ball valves, and solves the problems that a self-adaptive compensation mechanism of an intelligent valve positioner can cover the degradation process of mechanical wear of a pneumatic sealing ball valve quietly during long-term operation, and finally sudden control instability is caused due to the fact that nonlinear wear exceeds a compensation limit. Comprising a valve body, a pneumatic actuator arranged on the valve body, a valve rod which is in transmission connection with an output shaft of the pneumatic actuator and located in the valve body, a valve ball fixedly connected with the valve rod and a fault prediction circuit. The fault prediction circuit comprises a multi-dimensional physical sensing array module, a high-speed synchronous acquisition and preprocessing module, a core signal processing and fusion analysis module, an artificial intelligence coprocessor module and a predictive maintenance decision and life cycle management module. Multi-dimensional signals are collected in real time, valve health is evaluated after fusion analysis, and early warning and maintenance decisions are output.

The invention discloses an intelligent safety control marine methanol supply unit and a control method. The intelligent safety control marine methanol supply unit comprises a compressed air supply pipeline, a nitrogen supply pipeline, a methanol supply pipeline, a methanol discharge pipeline, an ethylene glycol water supply pipeline and a low-temperature fresh water supply pipeline, the compressed air supply pipeline controls compressed air to be used for air supply and action of all pneumatic devices and pneumatic valves. The nitrogen supply pipeline is used for inerting the methanol supply pipeline and operating the nitrogen system; the methanol supply pipeline and the methanol discharge pipeline are respectively used for supplying and discharging methanol; the ethylene glycol water supply pipeline and the low-temperature fresh water supply pipeline are used for preparing for methanol heat exchange in advance. According to the intelligent safety control marine methanol supply unit, needed equipment is combined into an independent device, the structure is compact, connection is reliable, installation, debugging, use and maintenance are convenient, and meanwhile centralized management control is facilitated; the intelligence and safety of the ship are improved, and the emission of international and domestic air environments is better.

The invention relates to the technical field of chemical engineering, and particularly discloses a palladium-carbon catalytic hydrogenation reaction material treatment system, which comprises a three-dimensional workshop structure, an air-operated hoist, an air supply system, an air supply system and an air supply system, wherein the top of the three-dimensional workshop structure is provided with an elevator and a hoisting ton bag; the palladium-carbon circulating unit comprises a palladium-carbon preparation kettle, a hydrogenation reaction kettle, a decarbonization filter, a filter pressing cylinder, a sample splitter and a glove box which are connected in sequence, and the sample splitter is connected back to the palladium-carbon preparation kettle through a closed pipeline; the solid feeding unit comprises a ton bag feeder, a pneumatic valve and a spiral conveying pipe, and the tail end of the solid feeding unit is connected with a top feeding hole of the hydrogenation reaction kettle; the gas supply system comprises a hydrogen cylinder group and is connected to a gas distributor at the bottom of the hydrogenation reaction kettle through a pressure reducing valve and a flow regulating valve; through the multi-stage separation design and the safety interlocking mechanism of the palladium-carbon circulating unit, the recovery rate of the catalyst is increased, meanwhile, the pressure, temperature and stirring state are monitored in real time to trigger nitrogen purging or pressure relief, and the risks of hydrogen leakage and reaction out-of-control are reduced in combination with inert gas protection of the glove box.

The invention relates to the technical field of mine water concentration treatment, and provides a reverse osmosis treatment system and a method thereof.The reverse osmosis treatment system comprises a control system, a raw water booster pump, a precision filter, a plunger pump, a circulating pump, a plurality of STRO membrane sets arranged in parallel, an internal circulation pressure reducing valve, an energy recovery device and a concentrated liquor outward-discharging pneumatic valve; the raw water booster pump, the precision filter, the plunger pump, the circulating pump and the STRO membrane group are connected in sequence; effluent of each STRO membrane group is divided into a concentrated solution and a permeate, the permeate is discharged through a water production pneumatic valve, one part of the concentrated solution returns to an inlet of the circulating pump, and the other part of the concentrated solution is discharged after passing through the energy recovery device. The yield of the concentrated liquor is reduced by half compared with that of secondary concentrated liquor, a large number of available water resources are saved, meanwhile, the treatment scale of rear-end evaporation crystallization equipment is reduced, the tolerance of a film element is protected, the service life of the film element is prolonged, and energy consumption is greatly reduced.

A pneumatic valve comprises an actuator with a movable closing element being disposed in a housing; the closing element with a tappet penetrating an actuator opening between an air chamber formed in the housing and an actuator chamber, and a plate, with a sealing element, for closing the supply opening, thereon, on that end of said tappet protruding into the air chamber, and an elastic element pressing the plate toward the actuator opening in an activated state; the actuator element configured to move, in a non-energized state, the activating element to press the tappet against a supply opening, and in an energized state to move the activating element so as not to exert force on the tappet so that the plate is pressed in the direction of the actuator opening by the elastic element. A sealing collar disposed about the tappet seals the air chamber from the actuator chamber.

The invention discloses a valve bead type pneumatic valve pressure stabilizing device and an experiment method in the technical field of pressure stabilizing experiments. The valve bead type pneumatic valve pressure stabilizing device comprises a hydraulic controller, a hydraulic actuator, a pressing piece, a pressing spring, a valve bead cap, a valve bead, a spraying pipe, a mounting frame, a high-pressure chamber, a pressure intensity sensor and a pipeline connector. A pressure sensor and a pipeline connector are arranged on the two sides of the high-pressure chamber, a spraying pipe and a mounting frame are arranged at the top of the high-pressure chamber, and a hydraulic actuator is arranged at the top of the mounting frame and electrically connected with the hydraulic controller; a pressing piece and a pressing spring are sequentially installed below the hydraulic actuator, and the top of the valve bead cap is sleeved with the bottom of the pressing spring. And the valve bead is arranged between the valve bead cap and the spray pipe. The valve bead type pneumatic valve pressure stabilizing device and the experiment method are simple in structure, convenient to machine and install and low in maintenance cost.

The invention relates to the technical field of grinding equipment, in particular to a cylinder head valve grinding device which comprises a bottom frame, two angle plates are fixedly connected to the bottom frame, a plurality of supporting rings are arranged above a placing plate, and two moving frames are arranged below each supporting ring. A driving part used for driving the movable frame to move in the length direction of the bottom frame is arranged on the angle plate, a screw penetrating through the supporting ring is fixedly connected to the movable frame, and a nut used for limiting and fixing the supporting ring is in threaded connection to the screw. The positions of all pneumatic valve grinding machines can be changed at the same time at a time, multiple cylinder head valves can be ground at the same time, the lower disc moves upwards to push the multiple clamping parts at the same time to limit and fix all nylon valve seats in the cross-shaped through groove, the situation that a single nylon valve seat is fixed is avoided, the operation time is saved, and the working efficiency is improved. And convenience is provided for subsequent polishing of the cylinder head valve.

The invention discloses an integrated valve pneumatic actuating mechanism which is used for being installed on a valve body to conduct fault diagnosis on a valve and comprises a gas driving unit, a support unit, a displacement sensor unit, an I / P conversion unit, a control unit, a connecting rod unit and a displacement feedback unit. The invention further discloses a fault diagnosis method based on the integrated valve pneumatic actuator. The valve position control function and the valve fault diagnosis function are integrated, a mounting support needed by an existing split type scheme is omitted, the mounting and debugging process before the pneumatic valve is put into production is greatly simplified, the clamping stagnation fault existing in the valve is detected losslessly and efficiently, the influence of the fault on normal operation of the valve is reduced through control compensation, and the working efficiency of the pneumatic valve is improved. And the material cost, the labor cost and the time cost of installation and debugging are greatly reduced. And a metal pipeline in the integrated valve pneumatic actuating mechanism not only is compact in structure, but also enhances the environmental adaptability and stability of the pneumatic valve.

The invention relates to the technical field of wax dipping equipment, and provides wax film wax dipping equipment which comprises a wax dipping furnace, a first mounting frame, a second mounting frame, a first ultrasonic sensor, a first pneumatic valve, a wax supplementing furnace, a clamping part, a controller, a lifting module and a rotating module, the lifting module is mounted at one end, close to the wax dipping furnace, of the first mounting frame, the rotating module is connected with a liftable part of the lifting module, and the clamping part is connected with a rotatable part of the rotating module; the rotating module is used for rotating a product to be waxed, the clamping part is used for clamping the product to be waxed, when the waxing operation is executed, the lifting module moves downwards to enable the product at the clamping part connected with the rotating module to be soaked in wax liquid of the waxing furnace, and the lifting module moves upwards to enable the product at the clamping part to be separated from the wax liquid and then drives the product to be waxed. And the rotating module is used for enabling the product at the clamping part to rotate clockwise or anticlockwise around the axis.

The invention relates to a workpiece carrier for arrangement in a machine tool. The workpiece carrier includes multiple pneumatic workpiece holders as well as a compressed air reservoir, pneumatic valves, a control unit, and an accumulator as a voltage supply, so that the workpiece carrier can hold a plurality of workpieces and be wirelessly activated by an external robot controller in order to clamp workpieces in the workpiece holders or remove workpieces therefrom.

The utility model belongs to the technical field of on-line analysis of tail gas emission, and particularly relates to a stable-pressure sampling device of an FTA analyzer. Comprising a sampling probe, a high-temperature electric heat tracing integrated pipe cable, a stop valve, a bypass filter, a sample injection pressure reducing valve, a sample injection needle valve, a sample injection pneumatic valve, a sample injection pressure transmitter, a bypass flowmeter, an instrument air pressure reducing valve, an I / P controller, a PID control unit, an FTA analyzer, a box body heater, a pretreatment heat preservation box and the like. According to the pretreatment pressure stabilizing system disclosed by the utility model, through the design of the connection relation among the structures of the pretreatment pressure stabilizing system, pressure stabilizing sampling can be realized under the condition of pipeline pressure fluctuation, and the measurement accuracy of real-time monitoring of chemical tail gas is improved.

The utility model relates to the technical field of pneumatic valves, in particular to a pneumatic valve with a tungsten carbide coating, which comprises a pneumatic valve main body, a valve body is arranged on the pneumatic valve main body, a valve seat positioning seat with an integral structure is arranged in the valve body, and the upper end and the lower end of the valve body are respectively provided with an opening structure with a flange plate. The upper end and the lower end of the valve body are connected with a pneumatic diaphragm actuator support and a fastening seat respectively, a valve seat is clamped and fastened to the upper end of the fastening seat, a valve seat coating is sprayed to the outside of the valve seat, material channels are formed in the side face of the valve seat at intervals, a valve element matched with the valve seat is arranged above a valve seat positioning seat, and a valve element coating is sprayed to the outside of the valve element. According to the pneumatic valve with the tungsten carbide coatings, the tungsten carbide coatings are arranged on the matched portions of the valve element and the valve seat, the abrasion resistance of the sealing face can be effectively improved, the service life of the valve is prolonged, meanwhile, the valve element and the valve seat are detachable, and maintenance of the valve is easy.

The utility model discloses a salt lake lithium extraction adsorbent scrubbing system which comprises a scrubbing tower and an adsorption tower, and a sunken water distributor is arranged at the bottom end in the scrubbing tower; the middle position of the bottom of the concave water distributor penetrates through the bottom of the scrubbing tower and is connected with a runner opening; a water replenishing opening is formed in the middle of the bottom of the scrubbing tower; two feed ports are formed in the positions, close to the water inlet, of one side of the scrubbing tower, and a water outlet is formed in the position, close to the top, of one side of the scrubbing tower; the flow channel port is sequentially connected with a pneumatic valve j, a diaphragm pump B and an adsorption column through a pipeline; according to the system, crushed resin particles and impurities are effectively removed by cleaning an adsorbent, so that the adsorption performance and the flowability of a resin bed layer are recovered, and it is ensured that the resin bed layer is always in the optimal working state. In the process of scrubbing the adsorbent, the adsorbent does not need to be manually carried except for necessary adsorption tower pipeline connection operation, so that the scrubbing efficiency is remarkably improved.

The utility model discloses a filling pipeline pressure releasing and maintaining stable conveying device which comprises a pressure maintaining device, a pressure releasing device and a pneumatic valve, and particularly comprises a high-pressure plunger pump, the pneumatic valve, a pressure releasing valve and a one-way valve device. Wherein a high-pressure plunger pump is adopted in the pressure maintaining device, pressure oil serves as a pressure source, an air pressure type pressure relief device is adopted in the pressure relief device, according to the air expansion principle, when the pressure exceeds a preset value, air expands to push the device to be started, a one-way valve is arranged in the pressure relief device, and a pneumatic valve is additionally arranged; the method is used for controlling stable conveying of gas in the filling pipeline. According to the structure, through function linkage of the pressure relief device and the pressure maintaining device, stability of slurry conveying is guaranteed, the serious problems of pipeline abrasion, pipe blockage and pipe explosion in the conveying process are avoided, the phenomenon of uneven filling slurry and the safety accident problem are avoided, and the mine production efficiency and safety are improved.

The invention discloses an atomic layer deposition gas supply system for a low saturated vapor pressure precursor source, and belongs to the technical field of atomic layer deposition reaction equipment. According to the system, a mass flow controller is combined with an original gas inlet pneumatic valve, so that the gas quantity in a precursor source bottle in the deposition process is accurately controlled; the pressure in the precursor source bottle is monitored in real time through a pressure meter, so that the temperature in the deposition process is accurately controlled; in addition, specific contents of precursor source gas and auxiliary gas in source gas are monitored in real time through a gas analyzer at a source outlet, so that a system is assisted to judge whether reaction gas needs to be supplemented or not; the mass flow controller, the pressure meter and the gas analyzer are all connected with the PLC, and control of all the parts is achieved through the PLC; and gas control, pressure monitoring and component monitoring of the low saturated vapor pressure precursor source in the experiment process are realized.

The utility model discloses a low-temperature rectification process system for preparing ultralow-concentration deuterium-depleted water, and relates to the technical field of preparation of deuterium-depleted water. The system comprises a low-temperature rectification system, wherein the low-temperature rectification system is provided with a feeding pipeline, a low-deuterium-hydrogen isotope gas pipeline and a high-deuterium-hydrogen isotope gas pipeline; the feeding pipeline is provided with a feeding mass flow controller; the low-deuterium hydrogen isotope gas pipeline is provided with a first discharge mass flow controller and is connected with a gas conversion system; the deuterium-rich hydrogen isotope gas pipeline is provided with a second discharge mass flow controller and is connected with an exhaust pipeline through a flame arrester; the inlet side of the flame arrester is further connected with a vacuum pump, the inlet side of the vacuum pump is connected with a third pneumatic valve, and the third pneumatic valve is connected with a low-deuterium-hydrogen isotope gas pipeline and connected with the inlet side of the flame arrester through a safety protection discharging system. According to the utility model, the separation efficiency of hydrogen isotopes is improved, so that ultralow-concentration deuterium-depleted water is produced more effectively, and compared with the prior art, the preparation process is simplified conveniently.

A sundry blocking and collecting device comprises a sundry collecting assembly installed on a dust removal pipeline, the sundry collecting assembly comprises a sundry collector, and a first pneumatic valve connected with the dust removal pipeline is installed on a dusty air inlet of the sundry collector; a second pneumatic valve connected with the dust removal pipeline is mounted on the dusty air outlet; an impurity outlet is formed in the end close to the dust-containing air inlet; the impurity outlet is connected with a filter material barrel, and an impurity inlet of the filter material barrel is provided with a third pneumatic valve; a fourth pneumatic valve is mounted at an impurity outlet of the filter drum; an air cannon blowback inlet is formed in the end close to the dusty air outlet, an air cannon blowback valve is installed on the air cannon blowback inlet, and the air cannon blowback valve is connected with an air cannon; and a sundry blocking component is arranged below the air cannon reverse blowing inlet in the sundry collector. According to the utility model, the impurities in the raw material ore in the mine production process are effectively intercepted and collected, the performance of the dust remover is improved, the service life of the dust remover is prolonged, the maintenance cost is reduced, the environmental pollution is reduced, and the dust remover has obvious environmental protection benefits.

A method is for operating a compressed air system in a vehicle. The compressed air system has pneumatically operated actuators, switchable pneumatic valves and devices for supplying and preparing compressed air, which are connected to one another via a pneumatic line system. The devices for supplying compressed air include a compressed air source and a compressed air store, and in the line system a pressure sensor is provided for measuring the pressure. An algorithm is programmed such that depending on the difference between the pressure in the compressed air store and the pressure in the line system, pneumatic valves are actuated to connect the compressed air store to the line system only after pressure equalization between the pressure in the compressed air store and the pressure in the line system. During pressure equalization, compressed air from the source and / or the actuators or devices is introduced into the line system.