396 results about "Shut down valve" patented technology

A toilet seat arrangement includes a toilet seat that is installed above a toilet bowl. A bidet nozzle is installed on the toilet seat and ejects water into a space above the toilet bowl such that the water falls into the toilet bowl. A water level sensor is installed on the toilet seat and detects a level of water in the toilet bowl. The water level sensor transmits a signal indicative of the level of water in the toilet bowl. A shutoff valve allows water to flow to a toilet tank fill valve when the shutoff valve is in an open position, and prevents water from flowing to the toilet tank fill valve when the shutoff valve is in a closed position. An electronic processor controls whether the shutoff valve is in the open position or the closed position dependent upon the signal from the water level sensor.

This invention provides a fire-fighting water pipeline flow regulation device, comprising an inlet pipe, a shut-off valve for controlling the flow of pressurized water within the pipe, an adjustable filter connected to a flow regulator with a cross-sectional area, and an outlet pipe connected to the other end of the flow regulator. Hose connector end caps are fixedly installed at the ends of the inlet and outlet pipes, and an automatic pressure relief valve with upper and lower chambers is installed at the end of the hose connector end cap. This device addresses the problems of unadjustable flow and pressure, failure to automatically drain residual water leading to accelerated pipe corrosion, and lack of filtration causing blockages. It enables manual adjustment of flow and pressure within the pipe, automatic drainage of residual water, and filtration and anti-blockage of pressurized water within the pipe.

The application relates to the technical field of stop valves, and discloses an ultralow-temperature stop valve, which comprises a valve seat and a valve body, the valve seat is arranged on the valve body, a valve rod for opening and closing the valve seat is arranged in the valve body, a packing part is arranged on the valve body, the packing part is used for plugging a gap between the valve body and the valve rod, a heat preservation sleeve is arranged on the valve body, a baffle is arranged on the valve body, the heat preservation sleeve is located on the side, away from the valve seat, of the baffle, and the heat preservation sleeve is located on the outside of the packing part. The heat preservation sleeve is arranged on the valve body, the heat preservation sleeve is located on the side, away from the valve seat, of the baffle, the baffle limits the movement of the heat preservation sleeve, the heat preservation sleeve can stably preserve the temperature of the packing part, the packing part is not prone to thermal bridge effect, and the condition that the packing part can quickly adsorb cold air is reduced.

A water treatment assembly is provided comprising a filter head (12) configured for connection to a water supply line, the filter head comprising a rotatable shut-off valve (62); a sump assembly (30) releasably connected to the filter head, the sump assembly including a sump cover (32) releasably attached to a sump body (34) and defining an interior chamber (38), and the sump cover having a cover port (74, 76) in fluid communication with a complementary head port (68, 70) in the filter head; and a filter insert (40) releasably enclosed within the interior chamber, the filter insert having a filter media portion (42) and an end cap (46) secured to the media portion, the end cap having at least one port (86) configured for fluid communication with one of the cap ports and one of the head ports.

The utility model discloses a high-stability inner sealing structure of a stop valve. The high-stability inner sealing structure is characterized in that a limiting surface and a sealing surface which is connected with a valve rod, limits the moving stroke of the valve rod and has sealing performance are arranged at the bottom of a reverse sealing thread bushing; the sealing surface is arranged on the back sealing thread bushing, when the stop valve is opened, the sealing angle on the valve rod is matched with the sealing surface, the moving stroke of the valve rod is limited, meanwhile, when the sealing angle on the valve rod makes contact with the sealing surface, the back sealing thread bushing can be extruded, the back sealing thread bushing is made to be extruded outwards, and the stop valve is sealed. The sealing performance and the stability of connection between the back sealing thread bushing and the valve body are improved; through the arrangement of the high-strength sealing ring and the high-strength sealing groove, friction between the lower valve element and the interior of the valve body when the stop valve is opened and closed is avoided, the situation that the sealing performance is affected due to abrasion of the lower valve element caused by long-time friction is avoided, the sealing performance and stability of the stop valve are improved, and therefore the service life of the stop valve is prolonged.

The invention provides an online inspection and maintenance butterfly valve, which relates to the technical field of valves, and comprises a valve body and an inspection and maintenance assembly, the two ends of the valve body are fixedly connected with a front end flange and a rear end flange respectively, the valve body is provided with a maintenance assembly, and the check valve is characterized in that the maintenance assembly comprises a notch, the notch is formed in one end of the top of the valve body, and the two sides of the valve body are fixedly connected with extending convex plates. During maintenance, the main flow channel can be closed and switched to the flow dividing branch pipes to circulate media, the defect that in traditional maintenance, shutdown and flow cutoff are needed is overcome, economic losses caused by production stagnation due to shutdown are fundamentally eliminated, in addition, after limitation of the butt joint supporting plate is removed, parts in the valve body can be maintained, multiple sets of flange bolts do not need to be disassembled one by one, and the maintenance cost is reduced. The maintenance time is shortened, meanwhile, the risk of pipeline sealing failure caused by disassembly and assembly of a connecting bolt of the valve body and the pipeline is avoided, and the sealing performance of the pipeline is guaranteed.

A tank device for temperature pressure relief of a gas storage tank, wherein the tank device comprises at least two tank containers and a delivery line connectable with the tank containers. Each of the at least two tank containers has at one end at least one shut-off valve arranged between the respective tank container and the delivery line, wherein at the other end of the tank container at least one safety valve is arranged. On the tank container a mesh element consisting of electrical lines and other electrical lines is arranged, wherein the electrical lines have a longitudinal axis which differs from the longitudinal axis of the other electrical lines. Here, the electrical lines and the other electrical lines form electrically insulated nodes. Furthermore, the mesh element and the tank container have no electrical contact. The invention also relates to a fuel cell system, a fuel cell operated vehicle and a hydrogen operated vehicle.

A drinking and domestic water system with a transfer point (22) from the public water supply network, a line (2, 4) from which at least one ring main (10; 38, 40) branches off, wherein the ring main (10) branches off from the line (2, 4) via an outlet opening (14) and is led back into the line (2, 4) via an inlet opening (16), wherein a flow resistance element (36) is arranged in the line (2, 4) between the outlet opening (14) and the inlet opening (16), or wherein the ring main (38, 40) is led back into a circulation line (6) via the inlet opening (16). The present invention aims to provide such drinking and domestic water system, which is intended to simplify the shutting off of the ring main for functional tests, cleaning measures or maintenance purposes.

The utility model discloses a zero leakage stop valve relates to stop valve technical field, including stop valve body, the both ends of stop valve body are provided with connecting pipe, the inside of connecting pipe is inserted and connected with the delivery pipe, the inner wall of two connecting pipe is provided with two annular sealing groove in the surrounding mode, and the annular sealing groove is connected with the delivery pipe. Annular sealing grooves are formed in the two connecting pipes, annular sealing rings are arranged in the two annular sealing grooves, each annular sealing ring is matched with the corresponding conveying pipe, the pipe walls of the two connecting pipes are slidably sleeved with sealing covers, and sealing mechanisms are arranged between the two connecting pipes and the sealing covers; and two first arc-shaped grooves are symmetrically formed in the inner walls of the two sealing covers. According to the stop valve, the two connecting pipes are connected to the outer surfaces of the corresponding conveying pipes in a sleeved mode respectively, then the two annular sealing rings can play a dual-sealing role, and therefore the phenomenon of leakage at the two ends of the stop valve body can be prevented.

Vehicle (3) comprising a vibration absorber (1) which includes a mounting seat (2) for the vibration absorber (1). The mounting seat (2) for the vibration absorber (1) includes a seat body (100) and a shut-off valve (301). The seat body (100) is provided with a first flow passage (120), a second flow passage (130), and a third flow passage (140). The first flow passage (120) is configured to be connected to a working cylinder (210) of the vibration absorber (1), the second flow passage (130) is configured to be connected to an external oil pump, and the third flow passage (140) is configured to be connected to an external oil filling device. The shut-off valve (301) is connected accordingly to the first flow passage (120), the second flow passage (130) and the third flow passage (140).The shut-off valve (301) is configured to control whether the first flow passage (120) is connected to the second flow passage (130) or not, and / or to control whether the first flow passage (120) is connected to the third flow passage (140) or not.

A closed fuel tank system (1) comprising: a fuel tank (10), a reservoir (20), a vapor channel (61H), a purge channel (62H), a shut-off valve (61), a purge valve (62), a tank pressure sensing unit (47), a lid flap actuating unit (41), a lid locking part (50A), a control unit (70), and a pre-fueling actuating unit (42). The lid locking part (50A) is designed to lock and unlock the lid flap (50) covering a fuel tank opening and unlocks the lid flap (50) when the lid flap actuating unit (42) is actuated by a user and the internal pressure of the fuel tank (10) is less than or equal to a predetermined pressure.The pre-fueling actuation unit (42) is designed to open the shut-off valve (61) to reduce the internal pressure of the fuel tank (10) to less than or equal to the specified pressure when it is actuated prior to actuating the lid flap actuation unit (42).

The present invention relates to an outflow shut-off valve (14), particularly for a plug-in connection device (1) for guiding coolant through which the outflow shut-off valve has a valve pestle (24) that moves axially in the flow passage (18, 20) of the plug-in connection device (1) and acts in a sealing manner with a valve seat (21), a head seal (29) arranged on a valve head (28) of the valve pestle (24) for fluid-tightly closing the flow passage (18, 20), and a closing spring (16) that acts on the valve pestle (24) on one side and can be fixed in the flow passage (18, 20) on the other side. Specifically proposed to improve assemblability, the valve stem (24) is radially sized and elastically deformable within a structural unit with a head seal (29) arranged on the valve head (28), such that the effective outer diameter during assembly is greater than the diameter of the assembly opening (DI6, DI40) in the undeformed state (DAG29, DAG33) and less than or equal to the diameter of the assembly opening (DI6, DI40) in the deformed state (DAM29, DAM33). The invention also relates to a plug-in connection device (1) having such an outflow shut-off valve (14).

A gas system includes an enclosure, a process gas metering valve, a shutoff valve, and a flow switch. The process gas metering valve arranged within the enclosure to flow a process gas to a process chamber of a semiconductor processing system. The shutoff valve is connected to the process gas metering valve to fluidly separate the process gas metering valve from a process gas source. The flow switch is operably connected to the shutoff valve to cease flow of the process gas to the process chamber of the semiconductor processing system using the shutoff valve according to flow of a gas traversing the flow switch. Semiconductor processing systems, gas control methods, and gas system kits are also described.

The invention relates to a shut-off valve (1) for a fuel gas tank, comprising a main valve (2) and a control valve (3), wherein the main valve (2) has a valve piston (5) movably mounted in a valve housing (4), which interacts with a valve seat (6) formed in the valve housing (4), and wherein the control valve (3) has a control piston (7) arranged coaxially with the valve piston (5), which is movably movable and interacts with a sealing seat (8) formed in the valve piston (5) for opening and closing a drain restrictor (9) formed in the valve piston (5). According to the invention, the drain restrictor (9) has a diffuser section (10) mediating between an inlet diameter (D1) and a correspondingly larger outlet diameter (D2), which is conical and / or stepped. The invention further relates to a fuel gas tank with a shut-off valve (1) according to the invention.

A refrigeration cycle device of an embodiment includes a shutoff valve that is disposed in a pipe connecting an indoor unit and an outdoor unit to circulate a refrigerant and that is opened and closed by power from an alternating-current power source, a backup power source capable of alternatively supplying power for driving the shutoff valve when a power interruption has occurred in the alternating-current power source, an open and close switch that is disposed in a power supply path from the backup power source to the shutoff valve, a control circuit that controls the shutoff valve and the open and close switch, and a power interruption detection unit that detects a power interruption in the alternating-current power source. When the power interruption has been detected, the control circuit closes the open and close switch to close the shutoff valve, and then opens the open and close switch.

The invention discloses a to-be-sealed carbon dioxide emptying method and device and a storage medium, and the method comprises the steps: determining to-be-executed emptying operation content of sealing equipment according to an emptying demand under the condition that the emptying demand exists in the sealing equipment, the emptying demand at least comprises an emptying type and the release amount of the carbon dioxide to be sealed and stored corresponding to the emptying type; the emptying types at least comprise main pipeline emptying and temporary storage space emptying; determining at least two to-be-closed stop valves on a main pipeline of the sealing equipment according to the emptying operation content, and recording parameter information of a target substance transported in the main pipeline after the at least two to-be-closed stop valves are closed; and according to the parameter information, the opening and closing degree of the valve between the main pipeline and the emptying vertical pipe is controlled, so that the carbon dioxide to be sealed and stored in the main pipeline between the at least two stop valves to be closed is emptied.

The high-flow high-pressure stop valve comprises a stop valve body and a connecting assembly, a flange is arranged at the upper end of the stop valve body, a valve deck is arranged at the upper end of the flange, a plurality of open grooves are formed in the lower end of the outer wall of the flange and the upper end of the outer wall of the valve deck, and clamping grooves are formed in the middles of the open grooves. The connecting assembly comprises a U-shaped plate arranged in the open groove, an elastic piece arranged in the U-shaped plate, a clamping block fixed to the lower end of the elastic piece and a pull rod fixed to the middle of the upper end of the clamping block, the opposite outer walls of the U-shaped plate are attached to the inner wall of the open groove, and the clamping block is connected with the clamping groove in a clamped mode. According to the high-flow high-pressure stop valve, the valve cover and the flange are clamped and installed together through the U-shaped plate, the elastic piece and the clamping block, an existing mode that the valve cover is installed on the valve body through a bolt is replaced, installation is easy, the U-shaped plate can be taken down to relieve limiting of the valve cover by lifting the pull rod upwards in the later period, and therefore the valve cover can be rapidly disassembled; and the valve cover is relatively simple to disassemble and assemble.

A distributor module includes a housing having first and second refrigerant inlets and first and second refrigerant outlets for connection to a compressor and a condenser-evaporator device. A heat exchanger and a shutoff valve are arranged within the housing. The heat exchanger is connected to the refrigerant inlets and refrigerant outlets such that heat from a refrigerant flowing between the first refrigerant inlet and the first refrigerant outlet and between the second refrigerant inlet and the second refrigerant outlet can be exchanged. The shutoff valve is connected to the second refrigerant inlet and the heat exchanger. A refrigerant connector is connected to the second refrigerant inlet on a shutoff valve inlet side. A further refrigerant connector is connected to the heat exchanger on a shutoff valve outlet side. At least one refrigerant subcircuit is formed between the refrigerant connectors, and sections of the subcircuit are arranged within the housing.

The invention provides a failure determination device and a failure determination method. A fuel supply system is provided with a hydrogen engine, a fuel tank, hydrogen piping, and first and second shutoff valves that serve as shutoff valves for shutting off hydrogen gas. When an operation for requesting to stop the hydrogen engine is performed, the malfunction determination device executes a malfunction determination routine in which, after the shut-off valve is closed, the decrease speed of the pressure of hydrogen gas downstream of the shut-off valve is observed in a state in which the hydrogen engine is continued to operate, and when the decrease speed is slower, it is determined that the shut-off valve is not normally closed. When an operation requiring operation of the hydrogen engine is performed during execution of the failure determination routine, the failure determination device opens the shut-off valve and stops the failure determination routine in a state in which the hydrogen engine continues to operate.

The invention relates to a train, in particular a freight train, with a plurality of wagons coupled to one another by mechanical couplings; with a main air line extending through the carriages via coupled air couplings at axial ends of the carriages facing each other and coupled to each other by mechanical couplings; with shut-off devices that include shut-off valves arranged in the area of ​​the air couplings in order to selectively release and pressure-tightly shut off the main air line at the air couplings. The train according to the invention is characterized in that the shut-off valves are designed as air valves that are at least indirectly electrically actuated.

The present invention provides a high-speed shut-off valve having a short and repeatable closing time in the range of several milliseconds, and a drive mechanism for the same valve. [Solution] The drive unit 35 has a piston 3 slidably disposed within the cylinder housing 2. Pressure is applied to the piston, and the piston is fixed in the open position of the valve 1 by a locking device 8 using a locking body 13 and a locking element 14, the locking element 14 pushing the locking body 13 into a ring groove 10 in the outer wall of the piston. For high-speed closing of the valve 1, the locking is released, thereby accelerating the piston 3 by the applied pressure, sliding the valve mechanism 4 into the vacuum tube to close the vacuum tube. The locking body 13 has at least two frustoconical segments connected via a conical base, and the working contact surfaces of the piston 3 and the locking element 14 are fitted to these frustoconical segments, thereby generating substantially uniform surface pressure.

An air conditioning system (100) comprises: a heat source machine (10); a first indoor unit (20a); a first shut-off unit (30a) with a first shut-off valve (34); an alarm device (50a); an alarm unit (40a); a first refrigerant sensor (23) located in the first indoor unit (20a);and an indoor refrigerant sensor (43) arranged in the alarm unit (40a), wherein the heat source machine (10) and the first indoor unit (20a) are connected to each other via a first pipe (121), when the first refrigerant sensor (23) detects a refrigerant leak, the alarm device (50a) is configured to issue an alarm when the indoor refrigerant sensor (43) detects a refrigerant leak, the alarm unit (40a) is configured to issue an alarm when the first refrigerant sensor (23) detects a refrigerant leak, the first shut-off unit (30a) is configured to close the first pipe with the first shut-off valve, and when the indoor refrigerant sensor (43) detects a refrigerant leak, the first shut-off unit (30a) is configured to close the first pipe with the first shut-off valve.;

The utility model relates to the technical field of hazardous waste treatment, and discloses a hazardous waste crusher spiral conveying nitrogen charging protection device which comprises a nitrogen charging protection mechanism and a protection component arranged on one side of the nitrogen charging protection mechanism, the nitrogen charging protection mechanism comprises a nitrogen cylinder A and a stop valve installed at the outlet end of the nitrogen cylinder A, a conveying pipe is installed at one end of the stop valve, and a nitrogen discharging pipe is installed at the other end of the nitrogen cylinder A; a supporting rod is installed on one side of the conveying pipe, a check valve is installed at one end of the conveying pipe, the conveying pipe is installed at one end of the check valve, a safety valve is installed on one side of the conveying pipe, a connecting pipe A is installed at one end of the safety valve, and a stop valve is installed at the middle end of the connecting pipe A; four groups of nitrogen cylinders A are used for charging nitrogen into the sealed cabin, the crushing cabin, the rear section of the spiral pipeline below the lower flashboard and the top of the middle section of the spiral pipeline respectively, one group of nitrogen cylinders B is used for charging nitrogen into the side part of the front section, and the whole spiral pipeline is under nitrogen protection, so that waste in a material pit or the front spiral conveying section is prevented from catching fire; therefore, the flame returns to the whole spiral pipeline.

The invention relates to a module (14) for detecting leaks in a device, the module comprising a pressure sensor (8) and a pump (2) for generating pressure, the module being intended to reliably detect and / or quantify leaks in a device with a large sealing volume using a compact device, characterized in that the module (14) has a closable reference volume (11) which can be fluidically connected to an oil tank interface (10) by means of a valve (9) and can be separated from this in a sealing-fluid manner, wherein the pressure in the reference volume (11) can be detected by means of the pressure sensor (8), wherein a pressure can be generated in the reference volume (11) by means of the pump (2) and wherein the reference volume (11) can be fluidically connected to and separated from an atmospheric outlet (1) by means of a shut-off valve (4) via a reference partition (5) with a defined flow cross section.

A pressure regulating shut-off valve, and a method for operating a pressure regulating shut-off valve. A pressure regulating shut-off valve (1) has a valve member (2) regulating the fluid flow between an inlet (4) and an outlet (6). A pneumatic actuator (8) has a piston with a first and second face (14, 18) that define the first and second volumes (16, 20) within a cylinder (12). The second face has a larger surface area than the first face. The first and second volumes are fluidly connected to the inlet and an electrically actuated valve controls the fluid flow along a fluid path (22) to the second volume.The electrically actuated valve closes the fluid path when power is supplied to the valve and opens the fluid path when power is cut off from the valve, causing the pneumatic actuator to act on the valve member to hold the valve member in a fixed position.

A fuel refill system shut-off valve for a fluid delivery system providing an internal pressure line for use with a jet liquid level sensor is provided. The shut-off valve is closed unless there is a positive signal from the return pressure line, so the shut-off valve fails closed and overfilling due to a failure is avoided. An internal piston opens and closes a peripheral fluid outlet based on the presence or absence of back pressure provided by the return signal from the liquid level sensor located inside the fuel tank of the vehicle.

The utility model relates to the technical field of valves, in particular to a stop valve. The stop valve comprises a valve body, a valve element, a first connecting pipe and a second connecting pipe, a valve cavity is formed in the valve body, and the valve cavity comprises a threaded cavity, a valve port and an opening which are sequentially arranged in the axial direction of the valve cavity. A first connecting hole is formed in the outer side wall of the valve body, the first connecting pipe is connected with the first connecting hole and communicated with the threaded cavity, and the second connecting pipe is inserted into the opening and connected with the opening. The valve element is movably installed in the valve cavity, a threaded section is arranged on the valve element, and the outer wall of the threaded section is in threaded fit with the inner wall of the threaded cavity so that the valve element can move in the direction close to or away from the valve port in the axial direction of the valve cavity, and the first connecting pipe and the second connecting pipe can be controlled to be connected or disconnected through the valve port. The valve body is of an integrated structure. According to the stop valve provided by the invention, the assembly of the stop valve is simplified.

This application discloses a device for treating blockages in cooling wall water pipes. The device includes: a first tee pipe having a fourth, fifth, and sixth pipe, wherein the fourth pipe is connected to the flow channel of the first pipe, the fifth pipe is connected to the flow channel of the third pipe, and the sixth pipe is located between the fourth and fifth pipes; a second tee pipe having a seventh, eighth, and ninth pipe, wherein the seventh pipe is connected to the sixth pipe, the ninth pipe is connected to the second pipe, and the ninth pipe is located between the seventh and eighth pipes; a first shut-off valve located on the eighth pipe for controlling the on / off state of the eighth pipe; and a second shut-off valve located on the ninth pipe for controlling the on / off state of the ninth pipe.

A system includes a control valve with a first control port and a second control port. An actuator of the system includes a piston between an extend chamber and a retract chamber. The system also includes a shutoff valve fluidically connected between the control valve and the actuator. The shutoff valve is passively controlled by a pressure differential between the extend chamber and the retract chamber. If the pressure differential between the extend chamber and the retract chamber exceeds normal operating pressures for the actuator, the shutoff valve closes to stop pressure and flow communication between the control valve and the actuator, thereby pausing the actuator. When the pressure differential between the extend chamber and the retract chamber returns to the normal operating pressures for the actuator, the shutoff valve passively returns to an equilibrium position that allows the actuator to resume operation.

A gas and vacuum system is disclosed, and, in particular, an area valve service unit configured to provide local isolation of individual parts of a gas and vacuum system that may be required for installation, maintenance, or in the event of an emergency. The area valve service unit can have one or more shutoff valves, each of which has an associated access panel with a movable access panel door.