101 results about "Isolation valve" patented technology

This invention discloses an energy-saving and high-efficiency seawater flue gas desulfurization system and intelligent control method. The system includes a seawater supply unit, a desulfurization reaction unit, and an intelligent control unit. The seawater supply unit includes a seawater pool, a fixed-frequency pump, and a variable-frequency pump. Electric isolation valves are installed on the outlet pipes of the fixed-frequency pump and the variable-frequency pump. The desulfurization reaction unit includes an absorption tower with a single-layer spray layer inside, and the main outlet pipe is connected to the single-layer spray layer. The intelligent control unit is electrically connected to the fixed-frequency pump, the variable-frequency pump, and the electric isolation valve. It is used to monitor flue gas parameters and actual flow rate in real time, and dynamically adjust the frequency of the variable-frequency pump, the start and stop of the fixed-frequency pump, and the opening and closing of the electric isolation valve to match the water supply with the desulfurization load. This invention achieves continuous and precise flow rate regulation, significantly reducing energy consumption and investment costs.

The application belongs to the technical field of reactor thermal-hydraulic, and particularly relates to a test system for simulating passive safety injection pipeline rupture. The system comprises a full-pressure water replenishing tank simulation body and a break pipeline. The top of the full-pressure water replenishing tank simulation body is connected with a cold pipeline section of a pressure vessel simulation body through a balance pipeline, and the bottom of the full-pressure water replenishing tank simulation body is communicated with a descending ring cavity of the pressure vessel simulation body through a DVI main pipe. A first isolation valve is arranged on the balance pipeline. Both ends of the break pipeline are connected to both ends of the first isolation valve through a second isolation valve and a third isolation valve. A fourth isolation valve is arranged on the DVI main pipe. Both ends of the break pipeline are connected to both ends of the fourth isolation valve through a fifth isolation valve and a sixth isolation valve. At least one break simulation piece is connected in series on the break pipeline. The embodiment of the application can be used to carry out passive safety injection system response characteristic tests under the conditions of small break and double-end break in the balance pipe and the DVI pipe.

The application discloses an alloy vacuum separation furnace, which comprises a runner, a separation chamber and a mold system; the separation chamber comprises an isolation box, and an upper molten pool, an inclined part and a lower molten pool are arranged in the isolation box from top to bottom. The number of the inclined part is more than one, and the inclined part has an inclined surface. Alloy melt to be separated is poured into the upper molten pool through the runner; the upper molten pool and the lower molten pool are provided with plug parts; the melt in the upper molten pool can flow into the inclined part downstream of the upper molten pool by opening the plug part of the upper molten pool, and then flow into the lower molten pool through the inclined part. The mold system comprises a preparation chamber, a second isolation valve, a pouring chamber, a third isolation valve and a discharge chamber which are sequentially connected, and the pouring chamber is connected with the separation chamber. The melt in the lower molten pool can be quantitatively poured into a mold in the pouring chamber. The alloy vacuum separation furnace is continuously worked through the inclined part, the production efficiency is improved, and the alloy vacuum separation furnace is suitable for large-batch continuous production. The application further discloses an alloy separation method implemented by using the alloy vacuum separation furnace and a copper and zinc material.

The present application relates to a kind of modular molten salt loading and storage system, including vertical support structure rack, normal temperature electrical equipment group and high temperature molten salt equipment group are physically separated by isolation fence and integrated in it;High temperature molten salt equipment group includes molten salt storage tank and molten salt pipeline connected with molten salt storage tank;Molten salt pipeline includes molten salt loading pipe, molten salt loading pipe has upward inclination relative to horizontal plane, to realize the self-weight backflow of molten salt;The middle section of molten salt loading pipe is connected with molten salt isolation valve, and molten salt isolation valve and normal temperature electrical equipment group are cooperated to realize the on-off control of molten salt loading pipe.The present application effectively avoids the thermal influence of high temperature environment on normal temperature electrical equipment by isolation fence, and the integrated design of overall modularization integrates the core equipment of molten salt loading and storage into one, discards the traditional dispersed equipment arrangement and installation mode, greatly simplifies the field construction process, reduces installation period, also makes the debugging, maintenance and overhaul of system more convenient.

A low energy liquid degasification device has a liquid reservoir connected to an input channel above it and a cylinder below it. The input channel has several embedded isolation valves which allow the channel to be closed off into several independent chambers. The cylinder has a piston capable of moving up and down under the action of an actuator located below it and which seals the cylinder. Upon filling the liquid reservoir, input channel, and cylinder above the piston with a largely incompressible and inexpansible liquid and sealing the isolation valves, the piston is moved downward increasing the enclosed volume and generating a vacuum. Agitation of the assembly produces cavitation and pressure waves inside, generating bubbling that removes dissolved gas from the liquid.

Flow injection valve (300; 850), the flow injection valve comprising: a stationary element (802'); a movable element (11; 804'), wherein a surface of the stationary element contacts a surface (810') of the movable element, the movable element comprising several flow lines (16, 28, 44, 50; 876', 886', 890', 898'), each of the several flow lines having at least one opening (14, 30, 40, 42, 46, 48; 860', 874', 882', 892', 894', 896') on the surface of the movable element; and at least one pin isolation valve (1, 2, 3, 4); wherein the at least one pin isolation valve has a pin and an internal flow line (58', 96', 812', 858') through the pin, wherein the at least one pin isolation valve is movably arranged such that the pin can be actuated to connect with one of the first of the several flow lines in the movable element (11;804') to communicate fluidically, wherein at least one pin isolation valve can be actuated in such a way that it moves away from the movable element (11; 804') and is repositioned towards it in order to communicate fluidically with a second of the several flow lines in the movable element (11; 804').

The application discloses a kind of brake-by-wire control system's auxiliary pressure loop and fault detection method, comprising: liquid storage tank;The output of the liquid storage tank is connected with analog circuit and pressure loop by check isolation valve;Under normal brake assist, the analog circuit is closed, the pressure loop is communicated, and pressure brake is carried out to wheel cylinder, under the activation of ABS brake assist, the liquid supplement valve of the pressure loop is opened, and pressure is built again;Through auxiliary pressure loop, and in the fault diagnosis method in ABS activation condition, the generation of the problem of the decrease of assist performance when the vehicle mechanical backup cannot be timely cut to due to circuit leakage can be prevented, to ensure the driving safety of driver.

The present application relates to the technical field of flue gas waste heat recovery of thermal power generation, and provides a low-low-temperature coal economizer flue gas waste heat recovery device and system, which comprises a collection module for processing sensor signals to generate preprocessed data packets; a twin module for performing simulation based on the data packets to output a flow field atlas; an analysis module for evaluating the atlas to output a flow field uniformity index and a wear and corrosion risk distribution map; a coordination module for optimizing calculation with the three indexes as targets to output a set of deflector angle adjustment instructions; a regulation and control module for driving a deflector array to perform angle adjustment; and a monitoring module for identifying leakage based on humidity data and controlling an isolation valve. Through the construction of a main control closed loop of "perception-simulation-optimization-execution" and an independent leakage safety closed loop, dynamic shaping of the flue gas flow field, coordinated inhibition of the wear and corrosion risk, and rapid isolation of sudden leakage are realized, thereby improving the system operation reliability.

The present utility model relates to a vacuum distillation receiver adaptor for use in laboratory and pilot-scale distillation systems operating under reduced pressure conditions. The adaptor comprises an inlet connection configured to receive vapor or condensate from a distillation apparatus, first and second outlet connections configured for attachment to corresponding collection vessels, and an internal flow passage configured to selectively direct flow between the inlet connection and the outlet connections. The adaptor further includes an outlet selector valve configured to selectively establish fluid communication with either outlet connection, an inlet isolation valve configured to isolate the adaptor from the distillation apparatus, and a vent valve configured to selectively equalize pressure within a selected outlet connection.

This utility model discloses a valve conveying device, which includes a main board. The bottom of the main board has an internal valve track matching the valve. Above the main board are two valve outlet pipes, I and II, arranged sequentially along and connected to the internal valve track. An isolation valve, which blocks the internal valve track when activated, is located between the two outlet pipes. Two valve inlet interceptor plates and two clamping plates are mounted on both sides of the main board. The valve inlet interceptor plates are located on the side of valve inlet pipe I furthest from valve inlet pipe II and are driven by a valve inlet interceptor cylinder. The clamping plates are used to clamp the valve at the valve conveying position and are driven by a clamping plate control cylinder. The valve conveying position refers to the position where the internal valve track aligns with valve inlet pipes I and II. The main board contains an air blowing pipe corresponding to the valve conveying position. This utility model's device has a reasonable structural design, enabling rapid and efficient valve conveying. The valve conveying pipe can be laid using a flexible hose, making installation convenient.

This application relates to a hydraulically controlled water supply on / off device and its control method. The device includes a pressure reducing valve, a pilot valve, and a solenoid valve. The solenoid valve is disposed on the connecting pipeline between the outlet side of the pilot valve and the outlet side of the pressure reducing valve. When the solenoid valve is open, the valve plate of the pressure reducing valve separates from the valve body under the pressure of the water at the inlet side of the pressure reducing valve, and the pressure reducing valve opens. When the solenoid valve is closed, the pilot valve controls the valve plate of the pressure reducing valve to move downward, and the pressure reducing valve closes. This device controls the opening and closing of the solenoid valve by receiving the unit's operating status signal to isolate or open the pilot valve channel, thereby automatically controlling the opening and closing of the pressure reducing valve using hydraulic action. This achieves reliable on / off control of the technical water supply system, effectively avoiding the opening and closing failures caused by pressure buildup in traditional electric isolation valves. Furthermore, by replacing the high-energy-consuming electric valve with a low-power solenoid valve, the system's energy consumption is significantly reduced.

The present application relates to the technical field of liquid level measurement, and discloses a liquid level measurement false water level prevention system and method based on steam backflow optimization, which comprises a sampling pipeline, an isolation valve, a liquid level measuring instrument, a measuring cylinder, a tee joint, a bypass pipeline isolation valve and a bypass pipeline; the sampling pipeline is connected with a measured container steam space and a liquid phase space; the measuring cylinder and the measured container build a static pressure balance system through the sampling pipeline; the equivalent flow resistance coefficient of the bypass pipeline is smaller than that of the measuring cylinder; when flash steam is generated due to a pressure drop of the measured container, the flash steam is guided to be discharged into the measured container steam space through the bypass pipeline; no heat preservation layer is arranged outside the measuring cylinder, and a mounting interval is kept between the measuring cylinder and the measured container; an external control system executes a digital filtering algorithm and combines multi-criteria judgment to eliminate false water level interference. The present application improves the accuracy of liquid level measurement.

A braking system (1) for a motor vehicle, comprising a hydraulically actuated wheel brake (8-11) for each of several wheels of the motor vehicle, wherein each of the wheel brakes (8-11) is assigned a hydraulic brake actuator (12-15) for its actuation, which includes a hydraulic pump (P) and a drive motor (M) for the hydraulic pump (P). The braking system (1) is provided to include a master brake cylinder (6) which is hydraulically connected to the wheel brakes (8-11) for their actuation, wherein a controllable first isolating valve (T8-T11) is interposed between the master brake cylinder (6) and each respective wheel brake (8-11).

The present application relates to the technical field of spacecraft propulsion system, and more particularly to a micro-newton hybrid mode propulsion system and method based on gas working substance. The system comprises a gas storage unit, a gas supply unit, a thruster unit and a propulsion system driving and control unit. The gas storage unit adopts symmetrically arranged high-pressure gas cylinders connected through high-pressure isolation valves, and in combination with the automatic balancing strategy of the control unit, effectively solves the problem of on-orbit centroid drift. The gas supply unit includes parallel cold gas propulsion branches and electric propulsion branches, and each branch adopts a mechanical pressure reducer to eliminate vibration and noise caused by electromagnetic valve action from the source, realizing super-static operation of the system. The propulsion system driving and control unit controls the micro-newton cold gas thruster and the micro-newton electric thruster to work alone or in cooperation according to the distribution strategy based on the thrust critical point, realizing the optimal comprehensive efficiency of high precision and high specific impulse in the full thrust range, and being suitable for ultra-high precision space scientific exploration missions.

The invention relates to a loop flushing valve arrangement (10, 40) that comprises a housing with an inner recess, a first fluid port (19) connecting to the inner recess, a second fluid port (20) connecting to the inner recess, a third fluid port (21 ) connecting to the inner recess, and a spool (18) that is slidably movable within the inner recess. A biasing means (29) is provided that biases the spool (18) in a neutral position, in which the first fluid port (19), the second fluid port (20) and the third fluid port (21 ) are fluidly separated from each other. The spool (18) comprises a first pressure surface (22) that moves, when being applied with a pressure, the spool (18) into a first actuated position, in which a first temporary fluid channel is established between the second fluid port (20) and the third fluid port (21 ). Further, the spool (18) comprises a second pressure surface (23) that moves, when being applied with a pressure, the spool (18) into a second actuated position, in which a second temporary fluid channel is established between the first fluid port (19) and the third fluid port (21 ). Further, the first temporary fluid channel and / or the second temporary fluid channel comprise a unidirectional fluid influencing member (35, 36). This way, the loop flushing valve arrangement (10, 40) comprises a loop flushing valve functionality and a minimum pressure check valve functionality in a combined design.

The invention belongs to the technical field of nuclear power plant operation control, and particularly relates to a nuclear power plant seawater plate heat exchanger pressure difference and temperature control system and method. An equipment cooling water outlet of the plate heat exchanger is provided with an equipment cooling water thermometer, and a plate heat exchanger bypass pneumatic control valve and a plate heat exchanger differential pressure gauge are arranged between a seawater inlet and a seawater outlet of the plate heat exchanger in parallel. A seawater inlet of the plate heat exchanger is respectively connected with the plate heat exchanger positive flushing inlet pneumatic isolating valve and the plate heat exchanger back flushing outlet pneumatic isolating valve, and a seawater outlet of the plate heat exchanger is respectively connected with the plate heat exchanger positive flushing outlet pneumatic isolating valve and the plate heat exchanger back flushing inlet pneumatic isolating valve. Automatic backwashing of the plate heat exchanger can be achieved, impurities on the seawater side in the plate heat exchanger can be washed away, and the temperature of cooling water of equipment can be controlled to be not lower than the temperature limit value required by design in winter.

The embodiment of the present application provides an odor isolation valve, a drain pipe and an air conditioner. The odor isolation valve comprises: a shell, the shell is provided with an inlet and an outlet oppositely, the inlet and the outlet are used for communicating with the drain pipe of the air conditioner; a partition plate, the partition plate is fixedly arranged in the shell, and the partition plate is located between the inlet and the outlet, a tapered communication groove is arranged on one side of the partition plate close to the inlet, the communication groove communicates with the inlet and the outlet; and a tapered floating element, the floating element is movably connected in the communication groove, so as to realize the switching of the communication groove between the open state and the closed state; wherein, in the closed state, the floating element and the communication groove have an included angle. In the embodiment of the present application, by making the floating element a tapered floating element, the communication groove a tapered communication groove, and making the floating element and the communication groove have an included angle in the closed state, the drainage of the odor isolation valve is simpler, and the user experience is improved.

An ingot puller apparatus includes a housing defining a growth chamber and a growth chamber outlet, an isolation valve having a first valve end connected to the growth chamber outlet and a second valve end, an ingot receiving vessel defining an ingot receiving chamber and a receiving chamber inlet at a receiving vessel end, a clamp including a clamp base connected to the second valve end. The clamp includes at least one clamping finger for releasably connecting the ingot receiving vessel end to the clamp base. The at least one clamping finger is pivotably connected to the clamp base to pivot relative to the clamp base and into engagement with the receiving vessel end to connect the receiving vessel end to the clamp base.

The present invention relates to an electro-hydraulic braking system (1) comprising a first hydraulic pressure source (2) and a second hydraulic pressure source (11). Furthermore, an inlet valve (3) and an outlet valve (4) are provided for connecting at least four hydraulically actuated wheel brakes (5, 6, 7, 8), which are arranged in a first brake circuit (A) and a second brake circuit (B). The aim is to provide a braking system with higher reliability. For this purpose, it is provided that in both pressure supply lines between the first pressure source (2) and each of the inlet valves (3) of the first brake circuit (A), only one circuit isolator valve (12) and no other valve is arranged. Furthermore, no valve is arranged in either pressure supply line between the first pressure source (2) and each of the inlet valves (3) of the second brake circuit (B).This significantly increases reliability without unnecessarily increasing the complexity and weight of the braking system.

This application provides a method, device, electronic device, and storage medium for controlling the state of a fuel tank isolation valve. The steps include: receiving a refueling request signal and switching the isolation valve to a pressure relief state; acquiring a first pressure value in the fuel tank and controlling the refueling cap to unlock when the first pressure value is less than or equal to a preset fuel tank pressure; storing a first moment and starting a timer when the real-time state is open; acquiring the real-time state of the isolation valve when the cumulative time is greater than or equal to a first preset refueling time; switching the isolation valve to a stop-pressure relief state when the isolation valve is in a pressure relief state; not switching the isolation valve state when the isolation valve is in a stop-pressure relief state; and forcibly closing the isolation valve to a stop-pressure relief state after refueling is completed, if the refueling completion signal is lost and the isolation valve does not close in time and remains in a pressure relief state, preventing hydrocarbon molecules from entering the carbon canister after gasoline evaporation and avoiding hydrocarbon molecules from overflowing into the outside environment, thus effectively protecting the atmospheric environment.

A system and method for venting gaseous fuel from an engine of an engine system are described. The engine system includes multiple vent valves that allow a controller of the engine system to vent different volumes of a fuel feed line that deliver the fuel to the engine. An engine purge controller controls the closing of isolation valves and the opening of vent valves to reduce a probability of fuel remaining in an isolation portion of the fuel feed line. The engine purge controller further controls the introduce of a purge gas to purge portions of the fuel from the fuel feed line through one or more of the vent valves.

The application discloses an electric vehicle whole vehicle thermal management system, comprising: a heat pump module, a motor and a driving unit thermal management module, a battery thermal management module and a cabin thermal management module; a water-cooled condenser 5 is arranged in the heat pump module; a total circulating liquid loop is formed between the motor and the driving unit thermal management module, the battery thermal management module, the cabin thermal management module and the water-cooled condenser 5; a plurality of isolation valve bodies are arranged on the total circulating liquid loop, and are used for disconnecting and connecting between at least two of the motor and the driving unit thermal management module, the battery thermal management module, the cabin thermal management module and the water-cooled condenser 5. The application can comprehensively utilize the heat energy of the whole vehicle, reduce the battery power attenuation and improve the operation efficiency of the whole vehicle.

The application discloses a kind of digital twin's main steam isolation valve residual life prediction method and system, belong to nuclear power key equipment state monitoring and life prediction technical field, method includes: real-time acquisition main steam isolation valve part's multidimensional operating state data, pre-processing;The data after pre-processing is input into the response rapid prediction model trained, obtains predicted vibration response and predicted stress time history;The deviation of predicted vibration response and sensor measured vibration response is calculated;If deviation exceeds set threshold, then the model is updated online;If not, then keep the model after training;Based on the predicted stress time history output by online update or the model after training, cyclic load statistics and fatigue damage calculation are carried out, and the residual life of main steam isolation valve is obtained.The application realizes the dynamic, online, high-precision prediction of the health status and fatigue life of main steam isolation valve by constructing digital twin, deeply fusing physical mechanism and real-time data.

An actuation system (1) for adjusting the pitch of aircraft engine fan blades (200) comprising a hydraulic cylinder (5), including an isolation valve (71) adapted to selectively adopt a first and a second configuration, such that: - when the isolation valve (71) is in the first configuration, the hydraulic cylinder (5) is configured to be position-controlled by a control fluid from a main hydraulic circuit (4a); and - when the isolation valve (71) is in the second configuration, the piston of the hydraulic cylinder (5) can move in a first direction of travel by the action of a control fluid from an auxiliary hydraulic circuit (4b), the fan blade orienting itself towards a large pitch position, and the auxiliary hydraulic circuit (4b) not being hydraulically connected with the main hydraulic circuit (4a). Figure for the abstract: Fig. 5

This invention discloses an airtightness testing system for automotive brake fluid reservoirs, specifically relating to the field of airtightness testing. It addresses the technical problem of unstable leak detection caused by the superposition of float disturbance and test pipeline drift. After the fixture clamps the brake fluid reservoir and seals non-test ports, the product isolation valve is first closed to perform positive and negative pressure self-tests on the test pipeline, obtaining the positive and negative reference slopes of the pipeline, which are then written into the fixture reference table. Next, the product isolation valve is opened to form a test chamber, limiting the air supply and collecting the stop-air pressure sequence after stabilization, generating a state marker based on adjacent differences. When the state marker indicates float disturbance, an alternating short-pulse valve opening and closing sequence is executed, and the reference pressure signal is resampled and locked. Subsequently, during the positive and negative pressure holding stages, the holding pressure sequence is collected and the slope is fitted. The pipeline reference slope in the fixture reference table is subtracted to obtain the positive and negative correction slopes, respectively. A leak conclusion is output and recorded through bidirectional mutual verification.

The application discloses a metal material vacuum purification furnace, which comprises a molten liquid bag, a first isolation valve, a flow channel and a separation chamber; the first isolation valve is connected with the separation chamber; the separation chamber comprises a separation chamber shell, a heating chamber, a heater, an isolation box and a molten pool; the heating chamber is arranged in the separation chamber shell, and the heater, the isolation box and the molten pool are arranged in the heating chamber; each isolation box is provided with a molten pool, and a plug part is arranged on the molten pool; one end of the flow channel can be moved into the separation chamber by opening the first isolation valve; the molten liquid bag can pour the melt in the molten liquid bag into the flow channel, and then into the uppermost molten pool in the separation chamber; the melt in the molten pool can flow into the next layer of molten pool by opening the plug part; and the heater is used for heating the isolation box and the molten pool. The application further discloses a brass separation method implemented by using the metal material vacuum purification furnace, so that the purity of separated metals such as copper and zinc is improved, the oxidation loss is reduced, and the production efficiency is improved.

The application provides an integrated analysis sampling and cleaning device and a safety control method thereof, and belongs to the technical field of sampling and analysis equipment. The device comprises: a pneumatic isolation valve connected with a pipeline to be analyzed to open or close the passage; a driving cylinder arranged above the pneumatic isolation valve, having an upper end cover and a lower end cover; a piston rod arranged in the cylinder and capable of moving up and down, having a through central hole; an analysis electrode, which is in sealing connection with the lower end of the central hole and moves synchronously with the piston rod; a sealing assembly arranged between the piston rod and the lower end cover; a position detection unit arranged on the side of the cylinder; a flushing unit arranged on the side wall of the cylinder close to the analysis electrode; a control unit having a logic control module and a signal feedback module, which receives a position signal and automatically controls the opening and closing of the pneumatic isolation valve, the movement of the piston rod and the opening and closing of the flushing unit according to a preset program. The application can automatically plug and unplug, isolate and flush, and alarm in case of failure, and significantly improves the safety and operation efficiency of the analysis system.

This application provides a method, device, and electronic device for depressurizing a high-pressure fuel tank in a hybrid vehicle. The hybrid vehicle uses a domain controller to centrally control the network nodes corresponding to each electronic control unit. The domain controller includes a first domain controller for detecting refueling requests, a second domain controller for power distribution control of each network node, and a third domain controller for controlling the fuel tank isolation valve. The method includes: the first domain controller sending a refueling request; detecting whether the vehicle currently meets refueling conditions, and after confirming that the vehicle currently meets refueling conditions, sending a power distribution request for the fuel tank isolation valve to the second domain controller and a request to open the fuel tank isolation valve to the third domain controller; the second domain controller distributing power to the fuel tank isolation valve; and the third domain controller controlling the opening of the fuel tank isolation valve to depressurize the high-pressure fuel tank. This application can reduce vehicle manufacturing costs and reduce electricity consumption.