2076results about "Safety valves" patented technology

The invention relates to the technical field of balance valves, and discloses a load compensation balance valve which comprises a balance valve body and an adjusting nut, a locking cap is in threaded connection with the outer arc surface of the adjusting nut, the right side of the locking cap is in contact with a main valve element spring, and the end, away from the locking cap, of the main valve element spring is in contact with a tip cone. The function of a one-way valve of one balance valve element assembly is canceled, so that oil inlet from a V port to a C port depends on the pressure of a control oil port and generates driving pressure through a throttling network composed of a specific throttling hole, the one-way valve and a bypass throttling hole, and the other balance valve element assembly obtains the driving pressure equal to the pressure of the control oil port through an independent throttling hole. A pressure difference is formed to realize sequential opening of the two assemblies; the linkage logic inhibits the jitter of the multiple feedback system under the negative load, stabilizes the falling speed of the arm support, and avoids the risk of overturning of the whole machine caused by the dynamic load.

The pressure release valve comprises a shell and a fixing sleeve arranged on the shell, an installation cavity is formed in the shell, an electromagnetic coil assembly is arranged in the installation cavity, the magnetic isolation sleeve is inserted in the installation cavity, the magnetic isolation sleeve is connected between the shell and the fixing sleeve in an abutting mode and isolates the installation cavity, and the electromagnetic coil assembly is arranged in the magnetic isolation sleeve. A movable valve element is arranged on the magnetism isolating sleeve in a sliding mode, and the end of the movable valve element is connected with a sealing piece.

A breakaway valve for a cryogenic fluid tank includes a tank-side valve and a nozzle-side valve. The tank-side valve is connected to and forms a first vacuum-insulation layer with a first jacketed hose. The first jacket support includes first bellows configured to reduce heat transfer with the first vacuum-insulation layer and one or more first bellow supports that include first teeth inserted between and engaging the first bellows to provide structural support to the first bellows. The nozzle-side valve is connected to and forms a second vacuum-insulation layer with a second jacketed hose. The second jacket support includes second bellows configured to reduce heat transfer with the second vacuum-insulation layer and one or more second bellow supports that include second teeth inserted between and engaging the second bellows to provide structural support to the second bellows.

The utility model relates to the technical field of drain valves, and discloses a drain valve based on gravity control, the drain valve comprises a valve body, the interior of the valve body is provided with a cavity, the valve body comprises an inner side surface and an outer side surface opposite to the inner side surface, and the inner side surface is provided with a liquid inlet; a liquid outlet is formed in the outer side surface, and the liquid outlet can be communicated with the liquid inlet through the cavity; the gravity ball is arranged in the cavity of the valve body; the sealing element is arranged between the gravity ball and the liquid inlet and is used for sealing the liquid inlet; the inclined plane structure is arranged on the other side, opposite to the sealing piece, in the valve body, the side, facing the gravity ball, of the inclined plane structure is provided with an upward inclined plane, and the shortest distance between the inclined plane and the sealing piece is smaller than the diameter of the gravity ball. According to the embodiment of the invention, the manufacturing and maintenance cost of the drain valve can be reduced, and the drain effect of the drain valve can be improved.

The present application relates to pipeline system damping and noise reduction technical field, provide a kind of active noise cancellation pressure relief valve, comprising: valve body, with the liquid inlet cavity and pressure relief cavity being communicated are formed;Bypass pipe, with liquid inlet cavity is communicated;Piezoelectric actuator and pressure relief component, pressure relief component includes adjusting piece, pressure relief elastic piece and pressure relief valve core, pressure relief valve core and pressure relief elastic piece are set in pressure relief cavity, adjusting piece is movably arranged on valve body, piezoelectric actuator is arranged on adjusting piece, pressure relief elastic piece is pressed between piezoelectric actuator and pressure relief valve core;Piezoelectric actuator is configured to drive pressure relief elastic piece, to eliminate the transient noise caused by pulsating pressure when pressure relief valve core moves.The active noise cancellation pressure relief valve provided by the present application introduces active noise cancellation technology into the active noise cancellation pressure relief valve pulsating noise control by arranging piezoelectric actuator, can be adjusted by pressure relief elastic piece The force exerted on the pressure relief valve core can eliminate the transient noise caused by pulsating pressure when the pressure relief valve core moves.

The invention provides a three-position seven-way valve, a chromatographic analysis system and a working method of the chromatographic analysis system, and relates to the technical field of liquid chromatography. The three-position seven-way valve comprises a rotor, a valve head and a valve body, the valve head is provided with a pressure relief opening and six functional ports, the rotor is provided with a first flow guide groove, a second flow guide groove, a third flow guide groove and a pressure relief groove, and communication of different flow paths is achieved through rotation of the rotor. During mode switching, high-pressure fluid in the quantitative loop is actively guided to the pressure relief opening through the pressure relief groove to release pressure, uncontrolled expansion towards a sample injection needle or a pump end is avoided, backflushing interference is effectively reduced, reverse pushing or disturbance of a sample is prevented, and the accuracy and repeatability of the sample suction volume in the sample loading stage are guaranteed. The integrated pressure relief design does not need an external device, a flow path is simplified, and the integration level and reliability of the system are improved. The device is suitable for high-precision suction type sample injection, and the sample injection stability and the chromatographic analysis reproducibility are remarkably improved.

An air turbine and a power generation device, the air turbine comprising a chamber, a valve and a rotor. The chamber comprises a first opening communicating with the atmosphere; the air pressure in the chamber is adjustable, and the difference between the air pressure in the chamber and the atmospheric pressure comprises a first air pressure difference and a second air pressure difference; the valve is connected with the chamber and is configured to open under the action of the first air pressure difference to form a first air flow by the chamber communicating with the atmosphere through the valve and the first opening respectively, and to close under the action of the second air pressure difference to form a second air flow by the chamber communicating with the atmosphere through the first opening, the directions of the first air pressure difference and the second air pressure difference being opposite; the rotor is configured to rotate under the drive of the second air flow. The air turbine can be used for power generation to convert the kinetic energy of the rotor into electrical energy, for example, the first air pressure difference and the second air pressure difference are obtained by utilizing the fluctuation of waves, and ultimately the wave energy is converted into electrical energy.

The invention discloses a pipeline gas safety valve control method and system, and relates to the technical field of gas safety control, and the method comprises the following steps: obtaining the operation data of a gas pipeline, constructing a gas pipeline operation state portrait, extracting evolution characteristics, and generating an operation state characteristic vector; according to the running state feature vector, grading the running state, dynamically correcting a division threshold value according to historical running data, and outputting a corresponding safety valve control decision instruction; the safety valve is driven to execute opening and closing actions according to the safety valve control decision instruction, the consistency between the actual action state of the valve and the control instruction is verified, and valve execution result data is generated; writing back and updating the operation state feature construction process according to the valve execution result data; through the running state portrait and closed-loop feedback control, the problems that in traditional pipeline gas safety valve control, the control decision adaptability is not high, and the execution result lacks feedback are solved.

The invention provides a valve device. The valve device comprises a main valve component, a bypass valve component and a communicating pipe. When the medium pressure difference of the inflow runner part and the outflow runner part of the main valve part reaches the preset value, the first valve port part of the bypass valve part can be opened for pressure relief, the bypass valve part and the main valve part are integrated, and the problem that the pressure relief function is lost due to reverse installation of the bypass valve part does not exist. The bypass valve component is provided with the pressure gauge connector part, the bypass valve component has a bypass function and a cut-off function, a channel between the pressure gauge connector part and the main valve component can be cut off, and the safety problem when the pressure gauge is connected is solved.

A break check valve can include one or more rotating members configured to rotate to alter the break check valve from an open position to a closed position upon dislocation of a pipe system fitting, the break check valve being altered from an open position to a closed position when acted upon by fluid within a piping system.

A hydrogen pressure reducer for a hydrogen supply system of a hydrogen fuel automobile relates to the technical field of hydrogen pressure reducers and comprises a valve body, a diaphragm type pressure reducing mechanism, a pilot-operated electromagnetic valve, a gas inlet and a gas outlet. The interior of the valve body is divided into a high-pressure cavity and a low-pressure cavity through the valve The diaphragm type pressure reducing mechanism is composed of a valve element assembly, a diaphragm assembly and a pressure adjusting assembly which cooperate to enable the output pressure of the air outlet to be kept stable, and assembly errors are eliminated. The valve element assembly is provided with a necking part to adjust the opening degree of a throttling hole, and accurate control is achieved. The base provides guiding constraint, and reliable sealing is ensured. The diaphragm assembly adopts a supporting disc, a diaphragm, a pressing disc and a locking nut fixing structure, so that the diaphragm is prevented from deforming, and the service life is prolonged. The pressure adjusting assembly comprises an upper cover, a pressure adjusting spring, a pressure adjusting spring seat and a pressure adjusting stud, and the pressure adjusting accuracy and stability are guaranteed. The overall reliability, sensitivity and safety of the hydrogen pressure reducer are improved.

The utility model discloses a one-way valve applied to an automobile suspension system, and belongs to the technical field of automobile parts, the one-way valve comprises a valve body, a valve core, an elastic piece and a ball body, the valve body is of a circular tube structure, two ends of the valve body are respectively a lead-in port and a lead-out port, the valve core is installed in the valve body, and the elastic piece is installed in the valve body. At least three supporting feet are arranged on the outer surface of the valve element and abut against the inner wall face of the valve body, a fluid channel for fluid to pass through is reserved between the outer surface of the valve element and the inner wall face of the valve body, and a ball is installed at the end, close to the valve body guide-in opening, of the valve body through an elastic piece. And the ball body moves to one side of the guide-in opening under the action of the elastic piece to block the guide-in opening. The structural design of the one-way valve is optimized, the fluid flow which can pass through is effectively improved, and the one-way valve is simple and reliable in structure.

The invention discloses a high-pressure straight-through plunger type throttle valve, and particularly relates to the technical field of throttle valves, the high-pressure straight-through plunger type throttle valve comprises a valve body, a plunger rod, a limiting fixer and a through-flow seat, a straight-through flow channel is arranged in the valve body, a plunger rod mounting hole is further formed in the valve body, the plunger rod is rotatably mounted in the plunger rod mounting hole, and the plunger rod is rotatably mounted in the through-flow seat. A limiting fixator is detachably installed at the position, corresponding to the top end of the plunger rod, of the valve body, a channel hole is formed in the bottom end of the plunger rod, the through-flow base is detachably installed in the channel hole, and through opening sealing rings are arranged at the positions, corresponding to the inlet end and the outlet end of the through-flow base, of the outer surface of the plunger rod. The valve body is of a channel straight-through type structure, the energy consumption loss of equipment is reduced, the direction of a medium flow channel does not need to be changed, the occupied well site space is small, the layout problem is solved, meanwhile, additional equipment brought by an angle type fixed throttling valve is reduced, cost is reduced, and disassembly and assembly are more convenient.

A pulsation dampener includes: a centerbody assembly having: a chamber including a first opening bounded by a wall defining a first surface; an outlet port communicating with the chamber; an inlet port communicating with the chamber; a flexible first diaphragm, wherein a perimeter of the first diaphragm is bonded to the first surface forming a seal that blocks the passage of fluid; a first cap disposed adjacent the first diaphragm, defining a first cavity between the first cap and the first diaphragm; an inlet orifice formed in the first cap communicating with the first cavity; an exhaust orifice formed in the first cap communicating with the first cavity; and a valve seat disposed in the first cavity in fluid communication with the exhaust orifice. The first diaphragm is moveable between an open position spaced away from the valve seat, and a closed position sealed against the valve seat.

The utility model relates to the technical field of valves, in particular to a water flow regulating valve which comprises a valve body, an inner cavity is formed in the valve body, a water outlet pipe communicated with the inner cavity of the valve body is arranged on the valve body, and a first through hole and a second through hole are formed in the top surface and the bottom surface of the valve body respectively in a penetrating mode. The first through hole and the second through hole are coaxially formed, a water inlet pipe is coaxially fixed at the second through hole, the inner end of the water inlet pipe is sealed, a plurality of water outlet holes are formed in the water inlet pipe in the inner cavity in a penetrating mode in the circumferential direction, a movable pipe is coaxially fixed in the first through hole, and the inner end of the movable pipe extends into the inner cavity and is arranged on the water inlet pipe in a sleeving mode; the movable pipe is in transmission connection with a driving mechanism. By controlling the up-and-down moving distance of the movable pipe, the number of the water outlet holes in the water inlet pipe shielded by the movable pipe can be controlled, so that the water outlet amount of the water inlet pipe through the water outlet holes is controlled, the water outlet flow of the water outlet pipe is adjusted, and more accurate flow control is achieved.

The invention relates to a steam pressure cooker with a combination valve and a floating check valve, the steam pressure cooker comprises a cooker body, a cooker cover, a steam inlet valve, a steam release valve, the combination valve and the floating check valve, the steam inlet valve and the steam release valve are both arranged on the barrel wall of the cooker body and are communicated with the interior of the cooker body, a steaming box is suspended in the cooker body, and a cooker cover locking ring capable of locking the cooker cover and the cooker body is arranged on the outer side of the cooker cover. A first through hole and a sixth through hole are formed in the cooker cover, the combination valve is arranged in the first through hole, the top and the bottom of the combination valve extend out of the first through hole, and the floating check valve is arranged in the sixth through hole. The steam cooker has the function of heating or cooking through steam, and has the advantages of being good in heat preservation effect, convenient to operate and high in safety and having the self-locking function.

The invention discloses an integrated stator disc type motor structure for a pesticide spraying unmanned aerial vehicle, and belongs to the technical field of unmanned aerial vehicle power equipment. According to the scheme, the motor comprises an annular stator seat and a rotor seat which are coaxially arranged, and the middle parts of the stator seat and the rotor seat are communicated; the rotor seat is rotatably arranged outside the stator seat in a sleeving manner, an air guide groove is formed in the inner ring wall of the rotor seat, and air inlets are uniformly formed in the air guide groove; a driven air door valve is arranged in the air guide groove and comprises a valve plate, an elastic piece providing reset elastic force and a balance weight part. And the counterweight part is arranged on the valve plate, so that the valve plate can slide in the air guide groove to adjust the opening degree of the air inlet under the action of centrifugal force generated by rotation of the rotor seat and reset elastic force of the elastic piece. The centrifugal force generated by the ball at the tail end of the valve plate is balanced with the elastic force of the elastic piece, and the valve is closed at low speed to prevent dust and corrosion; and in high-speed and heavy-load conditions, the heat dissipation is enhanced by automatically turning on.

The present invention provides a pneumatic valve system for easily attaching and sealing a valve coupler to a valve stem for filling an inflatable vessel such as a tire, tube, mattress, etc. The valve system may comprise the following major components: a valve stem, a valve cap with a pin passage and attachment structure for attaching to a valve coupler, a sealing member, a biasing member, the valve coupler comprising a coupler housing, a pin seat, an inflation pin, and a collar with ball bearings complementary to the attachment structure of the valve cap, and an elastic sleeve for providing inward force against the ball bearings. The valve system may allow for easy, secure, and sealed engagement between the valve coupler and valve stem by simply pushing down on the valve coupler, and disengagement by pulling up on the valve coupler with as little as two fingers.

A safe valve can work stably in high and low temperature environment. It relates to the field of safe valve. The existing safe valve causes the steel ball to be stuck due to unreasonable structure, which seriously affects the normal operation of the lubricating oil system. The utility model discloses a safe movable shell, a nut, a sealing ring, a spring, a steel ball, a spring seat, an oil inlet and an oil outlet. The safe movable shell is provided with an oil inlet and an oil outlet respectively. The safe movable shell is fixedly connected with the nut. The sealing ring is arranged between the safe movable shell and the nut. The spring seat is arranged on the end of the nut close to the steel ball. The spring seat is connected with the safe movable shell and the nut respectively. The spring is arranged between the spring seat and the steel ball. The steel ball is assembled in the oil inlet of the safe movable shell through clearance fit and between the spring. The steel ball is pushed by the lubricating oil pressure. The steel ball pushes the spring to compress the spring. The opening and closing of the oil inlet by the steel ball are realized. The utility model is applied to the field of safe valve of lubricating oil system.

The invention belongs to the technical field of nuclear power, and particularly relates to a pressure self-driving type separation pressure relief device. The device is driven to be opened through unbalanced force caused by medium pressure to the valve rod assembly. The separation structure is arranged, and the bearing bush and the separator can complete the separation action when the required separation pulling force is applied; the protector is of an integrated structure, one end of the protector is designed to be a blind hole, the head of the protector is designed to be a weak area, zero leakage is kept in a closed state under the normal working condition, when medium pressure reaches starting pressure, the disengaging structure is disengaged, the valve rod breaks the protector in a pulling mode, and the opening action is completed. The whole action process does not depend on external energy, signals, manpower and other operations, has the characteristic of high reliability, and can be applied to numerous key parts needing to execute the pressure relief function.

The application discloses a fireproof check valve with a locking structure, which comprises a valve body, the valve body is formed with a valve hole, the left end of the valve hole is provided with a valve sheet, the upper end of the valve sheet is inserted into a rotating shaft, and the rotating shaft is fixed in a rectangular groove of the valve body; the upper end of the valve body is formed with a circular arc hole, a half-tooth ring is sleeved in the circular arc hole, the half-tooth ring is engaged with a rack, and the rack is inserted into a rack guide hole in the valve body; the rack is provided with an elastic supporting structure and a locking structure; the left end of the rack is pressed against a stop lever, the stop lever is inserted into a stepped hole of the valve body, the lower end of the stop lever is fixed with a supporting block, and the first compression spring is clamped between the supporting block and the stepped hole; the supporting block is fixed with a fusible alloy column, the fusible alloy column is fixed with a supporting frame, and the supporting frame is fixed in the valve body; and the left end of the half-tooth ring is fixed with a pressing foot. The application can lock the valve sheet, can effectively prevent fire and smoke in high-temperature environment, and has simple and stable structure.

A debris capture device for use in a battery system includes a housing and a baffle arrangement. The baffle arrangement is sized and configured to capture debris that is greater than a threshold weight (e.g., 10 grams) and / or greater than a threshold size (e.g.; 0.25 inches (0.635 cm)) to prevent the debris from being exhausted out an exhaust system of the battery system. The present disclosure relates generally to thermal runaway debris capture systems, devices, and methods, and more specifically, to thermal runway capture devices for use in aviation systems.

Air valves for cases are shown and described. In one embodiment, an air valve includes an insert, a receiver, and spacer. In other examples, embodiments include a case having an air valve. Examples of an air valve system may include an insert assembly, a receiver assembly, and a sealing assembly. The result is a cost effective, reliable, easy to use, air venting system.

This invention discloses a check valve with automatic adjustment function, relating to the field of check valve technology. It includes a valve body and an inlet pipe and an outlet pipe connected to both ends of the valve body. An elastic element is disposed at the center of the valve body. An inlet valve assembly is installed between the elastic element and the inlet pipe, and an outlet valve assembly is installed between the elastic element and the outlet pipe. When the valve is opened to supply water, the elastic element undergoes lateral deformation due to longitudinal compression. When the valve is closed to stop supplying water, water backflow occurs in the outlet pipe. This backflow pushes the outlet valve disc to rotate clockwise and close. When the outlet valve disc rotates to close due to the reaction force of the water flow, it generates a lateral reset thrust on the laterally deformed elastic element through a reset push plate. This allows the elastic element to be stably reset, significantly improving its service life. Furthermore, it requires no manual intervention and achieves high efficiency with a simple structure.

In a fuel supply system that supplies gaseous fuel to the engine of a vehicle, the fluid pressure of the discharged gaseous fuel can be adjusted by electronic control, and the fluid pressure of the gaseous fuel can be safely released in the event of a malfunction such as a power supply failure. [Solution] In a fuel supply system 100 that supplies gas fuel to an engine 6, the system includes an electronically controlled regulator 3 that reduces the introduced gas fuel to a set pressure and discharges it, a pressure sensor 7 that detects the fluid pressure of the gas fuel after reduction, and a normally open electromagnetic relief valve 8 provided downstream of the pressure regulating valve of the electronically controlled regulator 3. The electromagnetic relief valve 8 opens when the fluid pressure detected by the pressure sensor 7 reaches a pressure threshold or when the system is not energized, releasing the gas fuel outside the system.

The invention provides a flow regulating valve which comprises a valve body structure, the valve body structure comprises a main body and a sealing seat connected with the main body, the sealing seat is provided with a valve port, and the sealing seat is made of a non-metal material; the valve head is movably arranged in the cavity of the main body so as to close or open the valve port, the valve head is made of a metal material, and the hardness of the sealing seat is smaller than that of the valve head. By the adoption of the scheme, due to the fact that the sealing seat is made of the non-metal material with the hardness smaller than that of the valve head, when the valve port is closed, the valve head makes contact with the sealing seat, the sealing seat generates elastic deformation, the contact area of the sealing seat and the valve head is large, and the sealing effect of the valve port is improved.

The application relates to a high-sealing fireproof air brake for a ship, which comprises a frame, a plurality of square blades for closing a ventilation channel in the frame after rotation, and a driving device; hollow edge columns are arranged on two inner side walls of the frame located on both sides of the air flow direction of the ventilation channel; first water through holes are arranged on the two hollow edge columns, and water injection pipes are communicated with the two hollow edge columns; the square blades are hollowly arranged and both ends of the square blades are provided with second water through holes; when the ventilation channel in the frame is closed after the rotation of the square blades, the two square blades located at the most edge are communicated with the corresponding hollow edge columns through the second water through holes of the square blades and the first water through holes of the corresponding hollow edge columns, and the second water through holes of the two adjacent square blades are communicated. The application has the advantages of high sealing.

The application provides an exhaust valve core assembly and an assembling device, and belongs to the technical field of valves. The valve core assembly comprises a bottom cover, an outer cover, a sealing gasket, a spring and a rivet. The back surface of the outer cover is provided with a groove part, the bottom cover is arranged in the groove part, the sealing gasket is arranged in abutment between the bottom cover and the outer cover, the center of the bottom cover, the outer cover and the sealing gasket is coaxially provided with a through hole, the rivet passes through the through holes of the outer cover, the sealing gasket and the bottom cover in sequence to form riveting, the front surface of the outer cover is provided with an air hole, the front surface of the outer cover is provided with a sunken part, the side of the sunken part towards the sealing gasket forms an upper annular ridge, the upper annular ridge abuts against the sealing gasket to form sealing, and a cavity is formed between the inner side of the upper annular ridge and the sealing gasket. The valve core assembly effectively solves the problem of loose sealing caused by plane contact. The upper annular ridge reduces the contact area of the sealing gasket and the outer cover, and the cavity design reduces the risk of adhesion of the two after long-term sealing, so that the opening force of the valve core is stable.

A valve assembly is disclosed comprising: a first part mountable to a fluid port of a panel and comprising a first opening for allowing fluid to enter the first part from a first side of the panel and a second opening for allowing fluid to flow out of the first part through the fluid port to a second side of the panel; a second part disposed within the first part and configured to seal the second opening when in a first position within the first part; a deformable member disposed within the first part; and a resilient member biased to move the second part to a second position within the first part so as to provide a fluid flow path from the first opening to the second opening. When in an initial state, the deformable member is arranged to hold the second part in the first position. On contact with a liquid within the first part, at least a portion of the deformable member is configured to deform so as to enable the resilient member to move the second part to the second position.

The invention relates to the technical field of valves, and discloses a water outlet valve. The water outlet valve comprises a valve body, a bypass valve element and a pressure relief valve element, the valve body comprises a valve main body and a bypass valve part connected to the valve main body, the valve main body is provided with a three-way valve cavity, a heating channel and a first heat exchange water inlet runner, the three-way valve cavity selectively communicates with the heating channel or the first heat exchange water inlet runner, and the first heat exchange water inlet runner is used for being connected with a heat exchange structure; the bypass valve part is provided with a bypass flow channel and a pressure relief channel; the bypass valve element and the pressure relief valve element are movably arranged in the bypass flow channel in a spaced mode, a pressure relief main cavity is formed by the gap between the bypass valve element and the pressure relief valve element, the pressure relief main cavity communicates with the side, close to the first heat exchange water inlet flow channel, of the three-way valve cavity, and the bypass valve element can selectively open a channel between the heating channel and the pressure relief main cavity. The pressure relief valve element can selectively open a channel between the pressure relief main cavity and the pressure relief channel. The water outlet valve integrates the bypass valve and the safety valve, and is small in size and convenient to install.