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492 results about "Poppet valve" patented technology
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A poppet valve (also called mushroom valve) is a valve typically used to control the timing and quantity of gas or vapour flow into an engine. It consists of a hole, usually round or oval, and a tapered plug, usually a disk shape on the end of a shaft also called a valve stem. The portion of the hole where the plug meets with it is called the "seat" or "valve seat". The shaft guides the plug portion by sliding through a valve guide. In exhaust applications a pressure differential helps to seal the valve and in intake valves a pressure differential helps open it. The poppet valve was most likely invented in 1833 by E.A.G. Young of the Newcastle and Frenchtown Railroad. Young patented his idea, but the Patent Office fire of 1836 destroyed all records of it.
Dynamic monitoring and self-adaptive adjusting method for pressure of high-pressure gas cylinder valve
ActiveCN121165816AFluid pressure control using electric meansAdaptive controlPressure stabilizationData set
The invention relates to the technical field of high-pressure gas cylinder control, and discloses a high-pressure gas cylinder valve pressure dynamic monitoring and self-adaptive adjusting method. The method comprises the following steps: dividing a high-pressure gas cylinder valve into a plurality of monitoring units, and obtaining pressure, temperature and flow data of each unit to form a comprehensive monitoring data set; establishing a pressure stability evaluation index and an environmental factor influence evaluation index based on the data set, and generating an initial risk value by applying a probability early warning mechanism and an adaptive prediction model; dynamically correcting the initial risk value and outputting a corrected risk value according to spatial relevance or time sequence dependency of adjacent monitoring units; and finally, the corrected risk values are sorted, a priority control instruction list is generated, and a control execution unit is combined to output a self-adaptive adjustment signal so as to adjust the opening degree of the valve. According to the method, comprehensive monitoring and dynamic adjustment of the high-pressure gas cylinder valve are achieved, and the operation stability of the valve is improved.
Owner:SHANGHAI QINGRAY NEW ENERGY TECHNOLOGY CO LTD
Cutting device for valve pipeline machining
The invention provides a cutting device for valve pipeline machining, and relates to the technical field of metal cutting. The cutting device for valve pipeline machining comprises a machine cabinet, two roller shaft conveyors are symmetrically arranged at the top of the machine cabinet, and angle adjusting assemblies are jointly installed between the two roller shaft conveyors and the machine cabinet; a support matched with the cabinet is arranged on one side of the outer surface of the cabinet, and three mounting frames are arranged at the bottom of the support. Through the integrated lifting type cutting assembly and the groove milling cutter on the telescopic machine box, pipeline cutting and groove forming are synchronously completed in one-time clamping, and the problem of repeated positioning caused by step-by-step machining in a traditional technology is solved. Especially for a thick-wall pipe or a high-alloy steel pipe, the coaxiality of the cutting end face and the groove machining face is ensured through cooperative clamping of the fixed roller and the wingspan type auxiliary roller, the precision of the valve pipeline butt joint face is remarkably improved, and the industrial scene with the high sealing performance requirement is met.
Owner:JIANGSU EATON MACHINERY MANUFACTURING CO LTD
Stop valve
The invention discloses a stop valve, and relates to the field of valves. A stop valve comprises a valve seat, a valve cover, a support, a lead screw and a sealing valve column, the liquid inlet end and the liquid outlet end of the valve seat are fixedly connected with liquid conveying pipelines on the two sides through flange plates and bolts respectively, the valve cover is fixedly installed on the valve seat through bolts, the support is fixedly installed on the valve cover, the sealing valve column is arranged in the valve seat, and the lead screw is fixedly installed on the support. The lead screw is fixedly connected to the upper end of the sealing valve column, the upper end of the lead screw upwards penetrates through the valve cover, and the double-opening sleeve is rotationally connected to the support; the operation difficulty of resisting fluid pressure when the valve is opened manually is effectively reduced, the downward pressure of fluid becomes assistance during closing, a worker only needs to reversely rotate the rotating wheel to achieve smooth downward movement of the sealing valve column, operation is convenient and fast, tighter sealing can be achieved through the fluid pressure, and the reliability after the valve is closed is improved.
Owner:JINHU RUIHUA MACHINERY CO LTD
Poppet valve device and hydraulic vibration isolator using the same
To provide a hydraulic vibration isolator having a poppet valve, which comprises a safety function for preventing damage due to overload, and can be easily replaced with an existing product without increasing the size of the existing product.SOLUTION: A poppet valve device 9 comprises a valve case 11, a valve body 13 that opens and closes a valve seat 11a opening into the valve case 11, and a spring 14 that biases the valve body 13 in an opening direction. The valve case 11 comprises: a flange part 11b that is housed in an outer case 10 communicating with an oil passage 8, slidably penetrates a relief valve seat 10a that opens into the outer case 10 to branch off and merge with the oil passage 8, and abuts against the opening peripheral edge of the relief valve seat 10a; and a relief oil passage 11c formed between a side part and an inner wall of the outer case 10 by cutting out a side part. The valve case 11 is biased by a spring 12 in a direction of closing the relief valve seat 10a. In the poppet valve device 9, excessive oil pressure causes the flange part 11b of the valve case 11 to separate from a valve seat 10a of the outer case 10, and the oil pressure is released through the relief oil passage 11c.SELECTED DRAWING: Figure 5
Owner:SANWA TEKKI CORP
Grouting filling pump
The invention discloses a grouting filling pump, and belongs to the technical field of grouting pumps, the grouting filling pump comprises at least four oil cylinder valve groups and pistons with moving strokes in the oil cylinder valve groups, and the pistons in the oil cylinder valve groups have a propelling state, a retreating state and a transition state between the propelling state and the retreating state; at any moment, at least two pistons are in a propelling state and a returning state respectively; the lifting valve is communicated with the oil cylinder valve groups, and the lifting valve controls opening and closing of a valve seat of the lifting valve through a valve clack. In the oil cylinder valve group, each piston is continuously switched in three stroke states, and at any moment, pistons distributed in different states, particularly pistons distributed in a propelling state and a returning state, exist in the whole oil cylinder valve group system, so that a slurry feeding action and a slurry discharging action exist in the whole pumping system at each moment; and the continuity of the slurry feeding and grouting process of the lifting valve can be ensured.
Owner:HUNAN YUTAI HEAVY IND CO LTD
Double-eccentric butterfly valve
The double-eccentric butterfly valve comprises a valve body, a valve rod, a butterfly plate and a valve seat, an upper shaft hole and a lower shaft hole are formed in the upper end and the lower end of the valve body respectively, the valve rod sequentially penetrates through the upper shaft hole and the lower shaft hole, the portion, located in an inner cavity of the valve body, of the valve rod is in linkage connection with the butterfly plate, and the valve seat is made of elastic materials. The valve seat is installed on the inner wall of the valve body and used for abutting against the butterfly plate to form sealing fit when the valve is closed. The butterfly plate comprises a mounting main body, a sealing ring, a first linkage assembly and a second linkage assembly; when the valve is opened, the valve rod drives the sealing ring to move towards the direction close to the installation body through the first linkage assembly so that the sealing ring can be rapidly separated from the valve seat, and when the valve is closed, the valve rod drives the sealing ring to move towards the direction away from the installation body through the second linkage assembly so that the sealing ring can rapidly abut against the valve seat. The butterfly plate can be quickly separated from or abut against the floating valve seat at the moment of opening and closing the valve, so that abrasion of a valve sealing pair is reduced, and the service life of the valve is remarkably prolonged.
Owner:ZHEJIANG DEYUAN VALVE GROUP CO LTD
Method and system for detecting inner leakage of positive pressure helium detection valve
ActiveCN122016197ADetection of fluid at leakage pointMeasurement of fluid loss/gain rateThermodynamicsLeakage test
The invention provides a method and system for detecting inner leakage of a positive pressure helium detection valve, and relates to the technical field of valve sealing performance detection.The method comprises the steps that test gas with rated working pressure is applied to a to-be-detected valve, the change of the internal pressure of the valve is monitored in real time under the rated working pressure, and positive pressure inner leakage pre-detection is conducted; if the pressure is kept stable, a judgment result of passing the pre-detection is obtained, and if the pressure fluctuation exceeds a set threshold value, the test is terminated and an alarm signal is sent out; and based on the judgment result of the pre-detection, in the process of continuously applying the test gas, controlling the temperature condition of the to-be-tested valve, repeatedly executing the positive pressure inner leakage test at different temperatures, and recording the basic leakage rate at each temperature point to obtain an initial dynamic sealing performance curve. According to the invention, accurate correction and multi-dimensional data fusion of valve leakage rate detection data can be realized, and the accuracy of inner leakage detection of the valve under a temperature alternating working condition is improved.
Owner:SHANGHAI JUKE FLUID CONTROL CO LTD
Lubrication system for transmission
A method of lubricating a transmission system including: scavenging, via a lubrication tube of a lubrication system disposed within the transmission system, oil from at least one of a plurality of gears; directing the scavenged oil from the lubrication tube to a plurality of oil conduits extending from the lubrication tube; and translating a shift assembly in a longitudinal direction such that the shift assembly actuates a plurality of poppet valve assemblies disposed in the plurality of oil conduits between a closed position and an open position. The scavenged oil circumventing the plurality of poppet valve assemblies in the open position and the plurality of poppet valve assemblies form a seal with the plurality of oil conduits in the closed position.
Owner:ARVINMERITOR TECHNOLOGY LLC
Lift valve having lift drive
ActiveUS12492759B2Operating means/releasing devices for valvesMechanical engineeringElectrical and Electronics engineering
A lift valve having a valve housing and a stroke drive is described. The stroke drive includes a drive rod that can be moved along a stroke axis into a first and a second end position. A measuring apparatus is coupled to the stroke drive on a side of the stroke drive facing away from the valve housing and includes a first sensor, a second sensor, and a first transducer. The first transducer is arranged to follow the movement of the drive rod and is arranged on a sensor rod arranged in an end region of the drive rod. To achieve a compact and safe design, a second transducer is arranged to follow the movement of the drive rod, the first sensor is arranged between the second sensor and the stroke drive. The first sensor is excited by the second transducer, which is arranged on a side of the first transducer facing the drive rod, when the drive rod is in the second end position.
Owner:GEA TUCHENHAGEN GMBH
Incineration system for cooperatively processing large-air-volume low-concentration waste gas and small-air-volume high-concentration waste gas and operation method thereof
According to the method, the high-concentration waste gas and the low-concentration waste gas are not premixed in advance, an independent incineration chamber is arranged for treating the high-concentration waste gas, a heat storage bed is not arranged in the incineration chamber, and a combustor is arranged in the incineration chamber; the combustor uses high-concentration waste gas as fuel and low-concentration oxygen-containing waste gas as combustion-supporting air. Three heat storage incineration chambers are arranged and used for treating low-concentration waste gas, lifting valves are arranged at an inlet and an outlet of each heat storage incineration chamber, during normal operation, opening and closing of the lifting valves are controlled through a time sequence, one lifting valve serves as an air inlet chamber, one lifting valve serves as an air outlet chamber, and the other lifting valve serves as a purging chamber. In this way, it is ensured that all waste gas can be discharged to reach the standard, and the safety and the optimal cost of the operation process are also ensured. The problems of potential safety hazards and overhigh energy consumption when high-concentration and low-concentration waste gases are simultaneously treated by a traditional RTO technology are solved.
Owner:TIANJIN CHENCHUANG ENVIRONMENT ENG SCI & TECH
Detection system and detection method for detecting bidirectional leakage rate of spherical sealing valve of air entraining system of airplane
ActiveCN121253084AMeasurement of fluid loss/gain rateMachine valve testingDifferential pressureRegulator
The invention relates to the technical field of sealing performance detection, and discloses a detection system and a detection method for detecting the two-way leakage rate of a spherical sealing valve of an aircraft bleed air system. The system comprises an air inlet device, a sealing device and a detection device, the gas inlet device provides clean test gas with controllable pressure; the sealing device is used for fixing the spherical sealing valve and simulating two sealing states of the spherical sealing valve in the high-pressure stage regulator to form two independent test gas paths; the detection device is connected with an outlet of the sealing device, is used for quantitatively or qualitatively detecting leaked gas and comprises a flow monitoring unit and a pressure difference monitoring unit; the sealing device can respectively test the sealing performance of the ceramic ball and the lift valve seat and the sealing performance of the ceramic ball and the valve mounting seat by replacing or adjusting the limiting structure; according to the invention, component-level bidirectional sealing performance detection is realized, the test precision and the maintenance efficiency are improved, defects can be identified before assembly, and the rework rate is reduced.
Owner:SICHUAN OUHANG TECH CO LTD
Valve rod and valve element flexible connecting structure and valve
Owner:SHANGHAI FIORENTINI GAS EQUIP
Extended reach tool for a bottom hole assembly
A downhole tool comprises a tool housing defining a flow passage therethrough from a first to a second end thereof. A poppet is axially movable on a poppet mandrel positioned in the tool housing. The poppet mandrel has at least one outlet port defined therein. A pilot valve is rotatable about the poppet mandrel. Rotation of the pilot valve opens and closes the at least one outlet port in the poppet mandrel to permit and block flow therethrough, and wherein the opening and closing of the at least one outlet port moves the poppet axially on the poppet mandrel.
Owner:KLX ENERGY SERVICES LLC
Valve end face machining tool
PendingCN121373522AOther manufacturing equipments/toolsMilling equipment detailsMachine toolMachining
The invention relates to the field of valve machining, and discloses a valve end face machining machine tool which comprises a bearing plate, a portal frame is fixedly connected to the top of the bearing plate, first lead screw guide rail sliding tables are fixedly installed on a cross beam and two stand columns of the portal frame, and second lead screw guide rail sliding tables are fixedly installed on sliding tables of the first lead screw guide rail sliding tables; a mounting frame is fixedly mounted on a sliding table of the second lead screw guide rail sliding table, a scrap iron collecting box is fixedly mounted at the top of the bearing plate, and a third lead screw guide rail sliding table is fixedly mounted at the top of the scrap iron collecting box. Automatic valve position correction and multi-specification clamping are achieved through the fixing mechanism, the machining mechanism integrates the end face cleaning function and the cutting and milling function, the scrap iron collecting box automatically collects waste, manual correction and additional cleaning equipment are not needed, the valve end face machining efficiency is improved, the machining precision is guaranteed, the machine is suitable for valves of multiple models, and the labor intensity is reduced.
Owner:YANTAI WANTONG VALVE CO LTD
Valve having a quad ring seal
A valve apparatus including a hollow valve retainer that includes a poppet slidingly positioned therein. The poppet includes a radially inwardly extending groove that is configured for receipt of a quad-ring sealing member that improves the sealing characteristics of the valve apparatus, as well as reduces friction between the poppet and valve retainer to increase the useful life of the valve apparatus.
Owner:MAC VALVES INC
One-Piece Internal Valve Components and Valves Including the Same
Disclosed herein are one-piece internal valve components that integrally include a combination of conventionally separate components (e.g., poppet (broadly, valve closure member), coil spring (broadly, biasing member), and retainer, etc.). The one-piece internal valve component has a unitary, monolithic, and / or single-piece construction. The one-piece internal valve components may be used in various valves, such as two-piece valves, check valves, relief valves, flow control valves for aircraft hydraulic systems, other flow control valves, etc. Also disclosed herein are exemplary methods of making one-piece valve components, e.g., via machining, additive manufacturing (e.g., 3D printing, etc.), other suitable methods for integrally combining conventionally separate internal valve components (e.g., poppet, spring, and retainer, etc.) into a one-piece internal valve component having a unitary, monolithic, and / or single-piece construction, etc.
Owner:CRISSAIR INC
A detection system and method for detecting bidirectional leakage of a spherical sealing valve of an aircraft bleed air system
ActiveCN121253084BMeasurement of fluid loss/gain rateMachine valve testingDifferential pressureRegulator
The application relates to the technical field of sealing performance detection, and discloses a detection system and a detection method for detecting bidirectional leakage of a spherical sealing valve of an aircraft bleed air system; the system comprises an air inlet device, a sealing device and a detection device; the air inlet device provides pressure-controllable and clean test gas; the sealing device is used for fixing the spherical sealing valve and simulating two sealing states of the spherical sealing valve in a high-pressure stage regulator, thereby forming two independent test gas paths; the detection device is connected to the outlet of the sealing device and is used for quantitatively or qualitatively detecting leakage gas and comprises a flow monitoring unit and a differential pressure monitoring unit; the sealing device can test the sealing performance of a ceramic ball and a poppet valve seat and the sealing performance of the ceramic ball and a valve mounting seat by replacing or adjusting a limiting structure; the application realizes component-level bidirectional sealing performance detection, improves test precision and maintenance efficiency, can identify defects before assembly, and reduces the rework rate.
Owner:SICHUAN OUHANG TECH CO LTD
A solenoid valve spool valve sleeve subassembly necking assembly device and assembly method
The application relates to a valve core valve sleeve subassembly necking assembly equipment and an assembly method, and belongs to the field of electromagnetic valve assembly. The equipment comprises a rack, a press-fitting seat, a valve sleeve subassembly feeding mechanism, a valve core subassembly feeding mechanism, an assembly mechanism and a necking mechanism. The press-fitting seat is arranged on the rack. The valve sleeve subassembly feeding mechanism is arranged on the rack and is used for feeding the valve sleeve subassembly. The valve core subassembly feeding mechanism is arranged on the rack and is used for feeding the valve core subassembly. The assembly mechanism is arranged on the rack and is used for press-fitting the valve core subassembly to the valve sleeve subassembly. The necking mechanism is arranged on the rack and is used for necking the valve sleeve subassembly. The application has the effect of improving the precision of press-fitting the valve core subassembly in the valve sleeve subassembly.
Owner:CHONGQING FORYS AUTOMATION EQUIP
Coating structure for valve stem of nuclear power plant and valve stem and method for manufacturing the same
The application discloses a coating structure of a valve rod of a nuclear power plant, a valve rod and a preparation method thereof, and the coating structure comprises a transition layer and a hydrogen-free diamond layer which are sequentially arranged from inside to outside, the microstructure of the transition layer is nanotwin, and the coating structure is uniformly covered on the surface of the valve rod. The preparation method comprises the following steps: after the valve rod is cleaned, the valve rod is subjected to plasma surface activation, the transition layer and the hydrogen-free diamond layer are sequentially deposited, and the valve rod is obtained. The coating structure of the valve rod of the nuclear power plant, the valve rod and the preparation method thereof effectively improve the hardness of the surface of the valve rod, reduce the friction loss of the valve rod, make the valve rod have good wear resistance and a reduced friction coefficient, improve the work efficiency, and further improve the service life of the valve rod, can meet the technical performance requirements of the valve rod on impact toughness, corrosion resistance and wear resistance in a high-temperature and high-pressure water environment, and effectively reduce the production cost.
Owner:SUZHOU NUCLEAR POWER RES INST CO LTD +3
Pilot-operated type pressure balance pneumatic valve
ActiveCN224033183UOperating means/releasing devices for valvesEqualizing valvesPneumatic valvePressure balance
The utility model relates to a pilot-operated type pressure balance pneumatic valve which comprises a valve body, a valve cover and a valve rod, and a valve seat is installed at the position of a valve shoulder of the valve body. The valve body is connected with the valve cover through a bolt; a through hole is formed in the center of the valve deck, the valve rod moves up and down along the through hole in the valve deck, and a sleeve is arranged on the upper portion of the valve seat and fixed in the valve body through the valve deck. A valve clack is arranged in the sleeve and moves up and down in the sleeve; a pilot valve core is arranged in the valve clack; a pressure balance disc is arranged on the top of the pilot valve element. The thrust requirements of the valve in the opening, closing, opening process, closing process and semi-opening state are greatly reduced, the opening process and the closing process only need to overcome friction of all parts and can be achieved without overcoming medium pressure, and meanwhile the medium auxiliary sealing effect in the full-closing state of the valve is reserved; while the good sealing performance is met, the opening and closing thrust of the valve is reduced, the operability of the valve is improved, and the requirement for an actuator is reduced.
Owner:HUBEI TAIHE PETROCHEM EQUIP
Piston type step locking device
ActiveCN224188039Uprevent backflowspeed up the flowLift valvePreventing unauthorised/accidental actuationFluid controlFixed frame
The utility model discloses a piston type step locking device, and particularly relates to the technical field of valves, the piston type step locking device comprises a valve body, an inlet pipe and a discharge pipe, one end of the valve body is connected with the inlet pipe, the bottom end of the valve body is provided with the discharge pipe, the valve body is connected with an opening and closing control assembly, the end portion of the valve body is provided with a sealing cover, and the top end of the valve body is provided with a fixing frame. A locking adjusting assembly is arranged on one side of the fixing frame, a locking assembly connected with the locking adjusting assembly in a sliding mode is installed on the fixing frame, a stepped through groove is formed in the valve body, and the caliber size of the inlet pipe is larger than the caliber size of the connecting position of the inlet pipe and the stepped through groove. Fluid efficiency is optimized through a step structure, double sealing is achieved in combination with an electromechanical locking mechanism, the control reliability and safety of the valve are remarkably improved, and the valve is suitable for fluid control scenes needing high sealing performance and impact resistance.
Owner:SHANXI JINDA GAS CO LTD
Pressure regulating valve with pneumatic pressure sensing assembly
The utility model discloses a pressure regulating valve with a pneumatic pressure sensing assembly, which belongs to the technical field of pressure regulating valves and comprises an inlet valve body and an outlet valve body, an inlet flow channel is arranged at the front end of the inlet valve body, a protruding arc throttling port is arranged at the tail end of the inlet flow channel, and an outlet flow channel is arranged at the rear end of the outlet valve body. A movable seat is arranged on the inner side of the inlet valve body, a fixed seat is arranged on the inner side of the outlet valve body, the center of the side, away from the fixed seat, of the movable seat is connected with a lifting valve element, the lifting valve element extends to the inlet flow channel and is fixedly connected with a valve seat in the inlet flow channel, and an inflation structure is arranged between the fixed seat and the movable seat. And the fixed seat and the movable seat are connected at the edge of the outer ring through a corrugated pipe. Through the movable base and the fixed base which are connected through the corrugated pipe, the size of the throttling opening is accurately adjusted, and balance control over the pressure of an outlet runner is achieved.
Owner:JIANGSU CHNV INSTR CONTROL ENG
Hydraulic device
PendingJP2025146533APositive displacement pump componentsLiquid fuel engine componentsHydraulic equipmentCheck valve
To provide a hydraulic device capable of sufficiently preventing leakage of pressure oil even when an oil path is a high-pressure circuit, by a check valve mechanism provided on mating surfaces of two components.SOLUTION: In a hydraulic device, a check valve mechanism 100 has a poppet 106 inserted into a poppet hole 156 and a seat part 111 with which an umbrella part 106B can come into contact, and a hole 11A in a main casing 11a and a hole 11B in a head casing 11b are in communication with each other and face each other. The hydraulic device has: a substantially annular O-ring groove 107 provided in the main casing 11a or the head casing 11b radially outward with respect to an opposing part of the hole 11A and the hole 11B with an axial core kA or an axial core kB as reference; an O-ring OR inserted into the O-ring groove 107; and a drain groove 150 provided radially outward with respect to the opposing part and radially inward with respect to the O-ring groove 107, and communicating with a drain port of the main casing 11a or the head casing 11b.SELECTED DRAWING: Figure 5
Owner:HITACHI CONSTRUCTION MACHINERY CO LTD
Valve block assembly, braking device and running equipment
The invention discloses a valve block assembly, a braking device and running equipment, the valve block assembly is used for the braking device, the braking device comprises a main cylinder assembly, a pressure adjusting assembly, a liquid storage assembly and a control assembly, and the valve block assembly comprises a first valve body and a second valve body which are arranged in a separable mode. When the valve block assembly is in the first working state, the first end of the first valve body is suitable for being connected with the main cylinder assembly, the left end of the first valve body is suitable for being connected with the pressure adjusting assembly, the right end of the first valve body is suitable for being connected with the control assembly, and the top end of the first valve body is suitable for being connected with the liquid storage assembly. When the valve block assembly is in the second working state, the first end of the second valve body is suitable for being connected with the main cylinder assembly, the left end of the second valve body is suitable for being connected with the control assembly, the right end of the second valve body is suitable for being connected with the pressure adjusting assembly, and the top end of the second valve body is suitable for being connected with the liquid storage assembly. According to the scheme, the compatibility of the valve block assembly can be effectively improved, the production cost is saved, the internal space layout of the brake device can be optimized, and the overall space occupied volume of the brake device is reduced.
Owner:SHANGHAI VCS TECHNOLOGY CO LTD
Inverted tail plug and assembly for gas lift valve
Embodiments of the present invention relate to an improved tail plug and assembly for a gas lift valve for use in oil and gas wells. The tail plug assists in preventing a pressurized component of the gas lift valve from depressurizing through leaks in the valve to the ambient. At least portion of the tail plug may be maintained in the gas lift valve via a treaded connection. The tail plug may further prevent leaks via an O-ring and / or a crush washer, where the O-ring and / or the crush washer are located on the tail plug below its threaded connection.
Owner:TALLY ENERGY SERVICES LLC
3-way quick-disconnect fluid couplings with automatic bypass switching
PendingUS20250306651A1Digital data processing detailsPipe elementsInformation processingFluid coupling
A 3-way fluid coupling for an information processing device having a primary liquid cooling loop and an expansion space. When no expansion device is present, the coupling directs liquid down a bypass path of the primarily loop. When an expansion device is present in the expansion space, the coupling directs liquid to flow through an expansion liquid cooling loop of the expansion device while substantially blocking liquid from flowing through the bypass path. The 3-way fluid coupling has a body and a poppet in the body. The poppet moves between a first position, in which first and second ports of the body are open while a third port is closed, thus directing liquid along the bypass path, and a second position in which the first and third ports are open and the second port is blocked, thus directing liquid to the expansion loop and substantially blocking the bypass path.
Owner:HEWLETT PACKARD ENTERPRISE DEV LP
Y-check valves, related components, and related methods
Exemplary embodiments are directed to Y-check valves, generally including a body, nut, retainer, cage subassembly, disc, and spring. The retainer, cage subassembly, disc, and spring are positioned within a barrel leg of the body, with the disc positioned within the cage subassembly. The disc is movable between a first position in which it sealingly engages a sealing surface of the cage subassembly and prevents fluid backflow through the body and a second position in which it does not sealingly engage the sealing surface and permits fluid flow through the body. The spring biases the disc into the first position. The nut, retainer, cage subassembly, disc, and spring can be provided as an insert subassembly that is removable from the barrel leg as a single unit. The disc can be provided as a poppet valve stem and plug. Methods of assembling the exemplary Y-check valves are also provided.
Owner:HAYWARD IND INC
Numerical control cutter for valve seat machining
The invention provides a numerical control tool for valve seat machining, and relates to the technical field of valve seat machining tools. The numerical control tool for valve seat machining comprises a tool body and a connecting piece, the tool body comprises a tool body and a tool bit which are coaxially and fixedly connected, a spiral channel is formed in the tool body in the axial direction, a balancing weight is arranged in the spiral channel in a sliding mode, a power assembly is coaxially arranged in a connecting pipe and a connecting cap, and the power assembly comprises a spiral column. The spiral column is inserted into the spiral channel in a sliding mode, energy generated by flutter is converted into heat energy through friction between the balancing weight and the spiral channel, the heat energy is dissipated through the cutter body, and the machining precision of the sealing face of the valve seat is improved. The length of the spiral channel is changed through displacement of the spiral column, so that the lead of the spiral channel is linked with the rotating speed of the cutter body, it is ensured that the damping direction of the balancing weight is always opposite to the flutter direction at different rotating speeds, and the device is suitable for suppressing flutter of the cutter body at different rotating speeds.
Owner:HANGZHOU HONGDA PRECISION TECH CO LTD
Valve leakage detection method, device, medium and electronic equipment
This disclosure relates to a valve leakage detection method, apparatus, medium, and electronic equipment. The method is applied to a water supply system, which includes a backup water source, valves, a main water source, a water storage device, a first variable frequency pump, and water supply pipelines. The method includes: real-time detection of the inlet pressure of the water supply pipeline; if the inlet pressure is greater than a preset pressure, repeatedly reducing the frequency of the first variable frequency pump until the backup water source's supply pressure exceeds the preset pressure; and determining whether the valve is leaking based on the change in the inlet pressure of the water supply pipeline after each frequency reduction. This allows for automatic determination of valve leakage based on the change in the inlet pressure of the water supply pipeline after each reduction in the frequency of the first variable frequency pump, facilitating timely valve repair and improving water supply stability. Furthermore, determining valve leakage based on the change in the inlet pressure of the water supply pipeline after multiple frequency reductions improves the accuracy of valve leakage detection.
Owner:GUODIAN INNER MONGOLIA ELECTRIC POWER CO LTD +1
A hydraulic control unit, a servo control mold locking hydraulic system and an injection molding machine
The application belongs to the technical field of hydraulic control systems of injection molding machines, and provides a hydraulic control unit, a servo control mold locking hydraulic system and an injection molding machine. The control unit comprises a high-frequency response servo valve, a one-way poppet valve, a two-way poppet valve and a controller. One end of the two-way poppet valve is connected to the rod cavity of a mold locking oil cylinder, and the other end is connected to a system oil tank. The controller is electrically connected to the high-frequency response servo valve, and is signal connected to a pressure sensor and a displacement sensor respectively. Compared with the prior art, the application integrates a high-frequency response servo valve, a one-way poppet valve, a two-way poppet valve and a closed-loop sensor controller to construct a high-precision hydraulic control unit, significantly improves the position repeatability and dynamic response speed of micro-opening actions, effectively meets the demand of advanced processes such as foaming injection molding and thin-wall molding for dynamic pressure adjustment of a mold cavity, and avoids problems such as uneven density of products, flash or mold damage.
Owner:NINGBO L K MASCH CO LTD