442 results about "Blocked valves" patented technology

The invention relates to a brake system for motor vehicles, comprising a master brake cylinder (2), to each of the two pressure chambers of which a brake circuit (I, II) with wheel brakes (8, 9, 10, 11) can be connected or is connected, an electrically actuatable block valve (23a, 23b) for each brake circuit (I, II) for separating the pressure chamber (17, 18) from the brake circuit, a first electrically controllable pressure supply unit (5), an electrically actuatable sequence valve (26a, 26b) for each brake circuit (I, II) for hydraulically connecting the first pressure supply unit (5) to the brake circuit, and a simulation unit (3) which can be hydraulically connected to at least one pressure chamber (17) of the master brake cylinder (2) by means of a simulator release valve (32), wherein a second electrically controllable pressure supply unit (49, 149) having at least one intake port and a pressure port is provided, the intake port of which is connected or can be connected to one of the pressure chambers (17, 18) and the pressure port of which can be connected or is connected to the brake circuit (I, II) associated with the pressure chamber. The invention further relates to a method for operating a brake system.

The device to actively control the vibrations of an articulated arm consisting of a plurality of segments each comprising at least its own actuator associated with a hydraulic drive circuit including a block valve. At least one of said actuators is associated with an auxiliary control circuit of the vibrations, comprising at least a sensor able to detect the vibrations and / or the position of one or more segments, a processing unit to process the signals of the sensor / sensors and a pump commanded by the processing unit and cooperating with said block valve. The auxiliary control circuit is associated with the hydraulic drive circuit.

The invention discloses a cooling system of a range increasing system of an electric vehicle and a control method of the cooling system. The cooling system comprises three loops, wherein a first loop is used for cooling an engine and consists of an engine cooling water pump, a radiator and an overflow kettle which are serially connected, a second loop is used for cooling the engine, a driving motor and a frequency converter and consists of a radiator, a cooling water pump, an overflow kettle, a driving motor, a driving motor controller, an engine and an engine controller which are serially connected, the third loop is used for cooling a power battery system and consists of a radiator, first blocking valves, a second blocking valve, the power battery system and a backflow water pump, the radiator of the third loop, the second blocking valve, the power battery system and the backflow water pump are serially connected to form a loop, and the first blocking valves are connected to two ends of the backflow water pump in parallel. The control method includes sufficiently utilizing cooling ability of the radiator, the cooling water pump and a cooling fan to cool down and control an integral vehicle system of the engine. Work efficiency of the range increasing system and energy conversion efficiency can be improved.

An electrically variable transmission (EVT) selectively establishes various EVT modes and a neutral mode. The EVT includes a source of pressurized fluid, fluid-actuated clutches, various solenoid-actuated valves including trim valves and blocking valves adapted to control a flow of pressurized fluid to the clutches to establish the transmission operating modes, and an electronic control unit (ECU). The ECU actuates different combinations of the solenoid-actuated valves to establish the different transmission modes. The solenoid-actuated valves are configured in such a manner as to provide the EVT with one or more default operating modes in the event the ECU temporarily loses electrical power. Depending on the particular configuration, the default modes can be the neutral mode alone, or the neutral mode combined with one or more of the EVT modes, with the EVT modes enabled by providing one or both of the blocking valves with a latching feature.

The invention relates to a device for measuring volume via inlay method, for measuring the volumes of static expansion method vacuum containers and the container demanding accurate measurement, and especially the volumes of irregular container. The device is composed of a gas supply system, a standard volume, a small container of unknown volume, a large container of unknown volume, a vacuum gauge, a block valve and a gas exhaust system, wherein the gas supply system is connected with the small container of unknown volume for supplying gas to the small container; the standard volume is put in or taken out via a flange on the small container; the pressure in the small container is measured by the vacuum gauge; the pressure in the large container is measured by the vacuum gauge; and the gas exhaust system is connected with the large container for exhausting gas from the large container. The invention utilizes a standard volume rod which is measured accurately as a reference volume, to be arranged into a container of unknown volume, utilizes gas expansion method and refers to pohl law to calculate the volume of the unknown container accurately. The method is suitable for measuring the volumes of irregular containers and can improve volume measurement accuracy significantly.

The invention discloses a deepwater net cage feeding method based on a suction type onboard automatic feeding system. The automatic feeding system comprises a stock bin, a sucking pipe, a sealing bin, a blocking valve, an air inlet pipe, a Roots blower, an air-feed mixing and spraying device, a discharge pipe and a power device. The sucking pipe and the discharge pipe are hoses. A feed port of the blocking valve is communicated with a sealed inner cavity of the sealing bin, and a discharge port of the blocking valve is communicated with a feed port of the air-feed mixing and spraying device. An air outlet of the Roots fan is communicated with an air inlet of the air-feed mixing and spraying device, an air-feed mixing outlet of the air-feed mixing and spraying device is communicated with an inlet of the discharge pipe, and an outlet of the discharge pipe extends from a head position of a cultivation work ship. The deepwater net cage feeding method includes loading, work ship positioning and feeding. The deepwater net cage feeding method has the advantages of shortened feeding time, high feed conveying efficiency, large coverage area and capability of saving labor, increasing feed utilization ratio and cultivation efficiency.

The invention relates to a fuel-tank inert gas control device, which belongs to the field of aero-technology. The fuel-tank inert gas control device comprises a small flow limit hole, a small flow pipeline, a small check valve, a safety valve, a large check valve, a pressure reducer, a large flow limit hole, a large flow pipeline, and a block valve and the like, wherein in the two inert gas pipelines, one is used for controlling the normally-open feeding of the inert gas with low oxygen content and low flow under the action of the flow limit holes, and the other one is used for controlling the discontinuous feeding of the inert gas with high oxygen content and large flow according to the pressure demands of the fuel tank through the cooperation of the flow limit holes, the pressure reducer and the block valve. Through the cooperation among the flow limit holes and the pressure reducer and the like, the fuel-tank inert gas control device has the advantages of realizing the oxygen content and pressure controls of the inert gas in the fuel tank, and improving the working reliability. Meanwhile, the oxygen content control of the inert gas in the fuel tank has a larger margin and can reduce the requirements for oxygen content of the feed gas when the plane drops, so the fuel-tank inert gas control device can reduce the scale of the air separator, and reduce the cost and weight thereof.

The invention discloses a regenerative device and method for desulfurized and denitrified active coke. The regenerative device comprises a regenerative reactor, wherein the regenerative reactor is composed by the connection of an inlet blocking valve, a feeding bin, a heating bin, a regenerative bin, a precooling bin, a cooling bin, a discharging bin, and an outlet blocking valve in sequence; a heating heat exchanger component is arranged in the heating bin; a precooling heat exchanger component is arranged in the precooling bin; a cooling heat exchanger component is arranged in the cooling bin; a nitrogen carrying bin for inletting ammonia nitrogen gas to improve the desulfurization and denitrification performances of regenerated active coke during regeneration process is arranged between the precooling bin and the cooling bin. The regenerative method adopts the regenerative device to conduct the regeneration of the active coke. According to the invention, more reasonable utilization of energy can be realized in the regeneration process to allow the desulfurization and denitrification performance of the regenerated active coke to obtain further improvement; on-line modification can be conducted on the active coke through the nitrogen carrying bin to keep high desulfurization and denitrification performance of the active coke.

The invention discloses a decoupling drive-by-wire brake system. The decoupling drive-by-wire brake system comprises an oil pot (01), oil pot liquid outlet check valves (02 and 03), a brake master cylinder (04), a pedal feeling simulator (PFS) (06), block valves (07 and 08), a linear normally closed valve (11), a high-pressure accumulator pressure sensor (12), a high-pressure accumulator (13), a motor-pump pressurization system (14), pipeline pressure increasing valves (15, 16, 17 and 18), pipeline pressure reducing valve (19, 20, 21 and 22), a pedal stroke sensor (23) and an ECU (31). According to the decoupling drive-by-wire brake system, compared with a configuration scheme that an auxiliary main cylinder is driven by a motor, the response requirement for the motor-pump system is reduced, the power requirement of the motor and the ECU is reduced, and the safety performance of the system is improved.

A valve isolation tool for insertion through a vent duct and vent duct valve of a gas flow duct. The isolation tool includes an outer tube having proximal and distal ends, the outer tube having a diameter sized to extend through the vent duct and blocking valve. An inner tube having proximal and distal ends is arranged coaxially with and movable within the outer tube. An inflatable balloon is attached to the distal end of the inner tube, wherein the isolation tool outer tube is insertable through the vent duct to an opening in the gas flow duct. The inner tube is slidably insertable through the outer tube until the balloon is situated within a bore formed through the gas flow duct and is inflatable therein to block any gas leak through the gas flow duct.

The invention discloses a heat pump air-conditioning system for an electric or hybrid vehicle. The heat pump air-conditioning system for the electric or hybrid vehicle comprises a compressor with the air supplying and enthalpy increasing function, a four-way valve, an external heat exchanger, a bidirectional thermal expansion valve, a middle heat exchanger, an expansion valve, a block valve, an internal heat exchanger, an air return pipeline, an air supplying pipeline, an air blower and an air distributing system. According to the heat pump air-conditioning system for the electric or hybrid vehicle, the flowing direction of refrigeration circulation is made to be opposite to the flowing direction of heating circulation by means of the four-way valve and the bidirectional thermal expansion valve, in this way, both the refrigeration mode and the heating mode are achieved on the electric or hybrid vehicle, PTC heating and electric heating tube heating are not needed for heating, the energy efficiency ratio is high, and the performance is reliable.

The invention discloses a solar heating system, which comprises solar vacuum tubes and a floor heating radiating pipe which are communicated with each other through a hot water pipe and a water return pipe, wherein the hot water pipe and / or the water return pipe is provided with a blocking valve; a communication valve is arranged between the hot water pipe and the water return pipe between the blocking valve and the floor heating radiating pipe; a small circulating pump and a heat conduction oil heater are arranged on a pipeline between the communication valve and the floor heating radiating pipe; and the communication valve, the small circulating pump, the floor heating radiating pipe and the heat conduction oil heater form a heating circulating system together. In the solar heating system, a heat storage water tank of the conventional heating system is canceled, and the heat loss during work is reduced; furthermore, the running of the system is controlled by a microcomputer, so the system works stably and reliably and has low running cost; moreover, due to a small circulating system for auxiliary heating, the heat energy utilization rate is high and the energy is saved when the auxiliary heating is started.

Described is a check valve with a housing having an inlet side and an outlet side, a flow blocking valve element with centering protrusions, an inlet annular shoulder, an outlet annular shoulder, cylindrical valve element cavity with an aspect ratio such that the flow blocking valve element cannot be put in a position where it is jammed. The centering protrusions on the flow blocking valve element support it on the outlet annular shoulder and allow flow to pass between the central disc of the valve element and the larger diameter of the outlet orifice. When flow is attempted in the inhibited direction, the flow blocking valve element is pressed against the inlet annular shoulder, forming a seal and blocking the flow. The valve has the advantage of being inexpensive to manufacture and highly reliable.

The invention discloses a remote control system of a long-distance pipeline block valve chamber, and the remote control system comprises a driving system, a remote control and transmission system, an upper operation center and a solar energy power supply system, wherein the driving system comprises an execution mechanism connected with a valve rod of a block valve, a 24V direct current electric head used for driving the execution mechanism to open or close the block valve, and a control cabinet; the remote control and transmission system comprises a remote measurement and control terminal which is used for remotely controlling the control cabinet and realizing the real-time transmission of long-distance pipeline pressure data and temperature data; the upper operation center is mutually communicated with the remote measurement and control terminal and realizes the remote control over the block valve through transmitting control instructions to the remote measurement and control terminal; and the solar energy power supply system supplies power for the execution mechanism and each instrument unit. A 24V large-power weak current driving mode is adopted for the execution mechanism, remote control of a big-caliber high-pressure crude oil or other medium long-distance pipeline block valve chamber without mains power support and without optical cable concomitance is realized, line patrol workload of workers is reduced, and loss and impact on the environment possibly caused at a pipeline failure state are reduced.

The invention relates to a hydraulic valve component with a directional slide valve for pressure compensation and a regenerating shunt valve. According to the hydraulic valve component, a hydraulic loop controls fluid flow between a first port and a second port of a hydraulic actuator with a cylinder / piston structure and a feeding pipe and a reflowing pipeline of an oil tank. The hydraulic loop operates in a normal power operation mode and power and nonpower regeneration modes. Under the power operation mode, a traditional pressure compensation slide valve determines the speed of the hydraulic actuator. One working port of the slide valve is connected to the first port through a working port blocking valve; and the other working port is connected with the second port. The regenerating shunt valve is directly connected between the first port and the second port of the hydraulic loop. Under the regenerating operation mode or a power and regeneration mixing mode, the combination of the slide valve, the working port blocking valve and the regenerating shunt valve decides the speed of the hydraulic actuator.

The invention relates to an in-situ monitoring fidelity continuous coring tool for a horizontal well. The in-situ monitoring fidelity continuous coring tool comprises a safety assembly, a hexagonal differential reverse lifting mechanism, a suspension rotating assembly, an in-situ fidelity intelligent control assembly, a storage inner cylinder assembly, an outer cylinder and a coring drill bit, wherein the safety assembly, an upper outer centralizer, the outer cylinder, a lower outer centralizer and the coring drill bit are fixedly connected in sequence to form an outer cylinder assembly, the hexagonal differential reverse lifting mechanism, the suspension rotating assembly, the in-situ fidelity intelligent control assembly and the storage inner cylinder assembly are fixedly connected in sequence to form an inner cylinder assembly, the inner cylinder assembly is arranged in the outer cylinder assembly, and the inner cylinder assembly is connected to the outer cylinder assembly through the suspension rotating mechanism. After coring is finished, soluble balls are put in, so that the hexagonal differential mechanism is subjected to pressure building reverse lifting to finish core cutting operation; a piston rod of a pneumatic cylinder drives a sliding block valve rod to move to open and close a ball valve, the soluble balls react and dissolve, and multi-point continuous coring operation is completed; and the consistency of the inner cylinder environment and the in-situ environment is recorded, fed back and adjusted through the in-situ fidelity intelligent control assembly.

The invention provides a blocking valve, a grouting sleeve and a prefabricated component connecting method. The steel bar connection grouting sleeve has a sealed space, and can be automatically sealed after grouting, and the grouting degree can be observed in a grouting process. Compared with an existing open sleeve, the grouting sleeve has the advantages that higher pressure can be born in the grouting process, the grouting sleeve can be automatically sealed after grouting, and the grout fullness of the sealed space can be observed in the grouting process, thereby monitoring the grouting quality of the grouting sleeve. The blocking valve, the grouting sleeve and the prefabricated component connecting method can be widely applied to a grouting sleeve connection process in the technical field of building construction.

The invention discloses a blocking method adopting fluid gel for producing a blocking valve by a formation temperature to block a gas reservoir. The blocking method comprises the following steps that a), a gel crosslinked system and a gel initiator are uniformly mixed until the mixed solution has no fish eye-shaped structure so that a fluid solution is obtained; b), the fluid solution is fed into a shaft by a pump and forms gel after gelation waiting; c), after ground operation, a gel breaker aqueous solution is added into the gel in the shaft, wherein the gel breaker aqueous solution comprises 2-5wt% of a gel breaker and the total weight of the gel breaker is 0.1-2% of that of the gel crosslinked system; and d), after the fed gel breaker aqueous solution contacts with the gel, the gel breaker makes the gel lose blocking performances and the broken gel is fed back to the ground. The blocking method has simple processes. The fluid gel for blocking has a low cost and very high pressure resistance.

The invention is a noncontact liquid sample collecting and split-charging system, a liquid sample collecting device made mainly of microprocessor, rotary anti-backoil vacuum / air injection two-use pump, oil-free air injection pump, collecting bottle, water level detector, quantifying tube, quantifying tube regulator, pneumatic clear / turbidity fluid blocking valve, etc, vacuumizing to absorb liquid, where the liquid sample does not pass through a pump system in the whole course, thus implementing noncontact automatic collection and split charging, and able to work in the chemical substances such as acid, base, salt, etc, and liquid environment containing solid impurities; in addition, it conveniently and accurately times and quantifies and has long maintenance-free period.

The invention discloses a computer fully automatic Kjeldahl nitrogen instrument which is provided with a device for distilling and titrating a detected sample after thermal decomposition and digestion. The device comprises a steam unit, a distillation unit, a condensation unit, an absorption unit and a titration unit. A steam furnace of the vapor unit is connected to the distillation unit through a steam blocking valve; an output tube of a buffering bottle of the distillation unit is connected with the condensation unit; an output tube of a condensation tube of the condensation unit is connected to the absorption unit; the output end of a titrator of the titration unit is connected to a titration cylinder of the absorption unit through a pipeline; and all the units of the device are sequentially connected through pipelines that communicate with each other, and controlled by a single chip control circuit. A safety door position sensor is installed on the safety door of the Kjeldahl Nitrogen instrument, and a digestion tube position sensor is arranged inside the safety door. The Kjeldahl nitrogen instrument has the advantages of simple structure, convenient operation and high detection accuracy, and can achieve the full automation of the protein inspection procedure.

A steel ball grinder with dual inlets and dual outlets for grinding coal is composed of rotary unit, main bearing, left and right screw conveyers, coal mixing case, separator and its connection pipe, master motor, speed reducer, gear drive system and noise isolating hood. Said separator consists of external and internal conic bodies, regulating baffle, flapper, coal returning case and blocking valve.

A safety valve arrangement and method, having an upstream block valve, a downstream block valve, and a pressure monitored galley between the upstream valve and the downstream valve.

The invention provides a movable skid-mounted cluster type well field integrated device. Cluster type gas wells are sequentially connected with switch well adjusting valves, emergency block valves, two-phase flow meters and single-well shut-off valves in series through pipelines via skid-mounted device interfaces respectively and then are connected with a natural gas manifold to form a natural gas pipeline. The natural gas pipeline collects natural gas pipelines of the cluster type gas wells and divides the natural gas pipelines into two ways, one way is sequentially connected with a differential pressure airtight power generation device and a downstream interface in series through a pipeline, and the other way is sequentially connected with a flow control valve, a main turn-off valve and the downstream interface in series through a pipeline. According to the movable skid-mounted cluster type well field integrated device, the gas wells can be remotely switched on and off, power generation can be conducted through the pressure of natural gas, and simple two-phase metering is achieved. The movable skid-mounted cluster type well field integrated device has the advantages of being easy to install, short in construction period and convenient to maintain and can improve the fast building and managing efficiency of a well field.

The invention discloses a pipeline pressure-stabilizing system and method used after a liquefied petroleum gas out-conveying pipeline stops conveying. The pipeline pressure-stabilizing system comprises a temperature sensor, a pressure sensor, a first-stage pressure-stabilizing device and a second-stage pressure-stabilizing device. The temperature sensor and the pressure sensor are arranged on a main pipeline short section, and the first-stage pressure-stabilizing device and the second-stage pressure-stabilizing device are connected with the main pipeline short section. The first-stage pressure-stabilizing device comprises a first block valve, a stop valve and a pressure buffering tank which are sequentially connected with the main pipeline short section. A second block valve is arranged between the first-stage pressure-stabilizing device and the second-stage pressure-stabilizing device. The second-stage pressure-stabilizing device comprises a third block valve, a pressure buffer, a pressure regulating device and a liquefied petroleum gas storage tank which are sequentially connected with the main pipeline short section. The temperature detection result obtained when conveying is stopped is compared with the ground temperature, the pressure change in the pipeline after a certain period is calculated, and the first-stage pressure-stabilizing device is used for carrying out pressure supplementation on the pipeline according to the analysis result, or the first-stage pressure-stabilizing device and the second-stage pressure-stabilizing device are used for releasing the pressure of the pipeline to achieve pressure stabilization of the pipeline after conveying is stopped, the system safety is guaranteed, and pigging and emptying of the whole line are avoided.

The invention relates to a water electrolysis hydrogen production method, belonging to the field of water electrolysis hydrogen production. The water electrolysis hydrogen production method comprises two sets of water electrolysis hydrogen production equipment, namely No.1 hydrogen production equipment and No.2 hydrogen production equipment, wherein two block valves V1 and V2 are arranged on a hydrogen pipeline between a hydrogen production framework A1-1 and a purification framework A1-2 of the No.1 hydrogen production equipment; and two block valves V6 and V7 are arranged on a hydrogen pipeline between a hydrogen production framework A2-1 and a purification framework A2-2 of the No.2 hydrogen production equipment. According to the method, the utilization rate of system equipment is improved by modifying serial connection and parallel connection of a water electrolysis hydrogen system, the maintenance frequency and system abnormal on-off frequency are reduced, a great amount of maintenance cost is saved, the hydrogen production capacity of the system is improved, and the normal stable production of hydrogen users is ensured at the same time.