6073 results about "Ball valve" patented technology

A pumping system 10 provides a physiological pulsatile flow and includes controller 121, a pump drive head 50 coupled to a motor 12 and a fluid housing 52 having at least one port 60. The port 60 includes a ball valve retainer region 69, a valve seat 73, and an occluder ball 71 disposed in the ball valve retainer region 69. During operation, the motor 12 forces the fluid in and out the fluid housing 52 and causes the occluder ball 71 to move from a first position whereby the fluid cannot pass through the port 60, to a second position whereby the fluid moves annular to and generally around the occluder ball 71. This movement creates a slight flow reversal that “breaks up” any blood clots that may form. The pumping system may be used as part of a cardiopulmonary bypass system, a ventricular assist device (VAD) and/or a heart pump.

The invention belongs to the technical field of compressed natural gas filling, and particularly relates to an integrated hydraulic station which realizes high integration of an oil tank, plunger pumps, motors, a valve block, a cooler, an instrument and a sensor. The reversing function of hydraulic oil is provided through cooperation of an electro-hydraulic reversing valve and a proximity switch on a hydraulic cylinder, the functions of circulating heating of the low-temperature hydraulic oil, discharging of the high-pressure hydraulic oil and avoiding the hydraulic oil channeling back betweenthe double pumps are realized through cooperation of an unloading valve, a one-way valve and the electro-hydraulic reversing valve in the valve block, the high-pressure difference automatic stop function and the high-pressure gas discharging function are provided, combustible gas leakage and expansion deformation of the oil tank which cannot be recovered caused by high-pressure gas channeling back are avoided, the functions of low oil level monitoring alarm, temperature monitoring alarm and low oil temperature automatic circulating heating before starting of the hydraulic oil tank are provided, a three-way ball valve is adopted to replace an oil return valve block in the aspect of cooling oil return of the hydraulic oil, thus the oil return control function is realize, and the cost and space of the hydraulic station are also reduced.

The invention relates to an underground central pump room draining automatic monitoring system, which comprises a PLC control cabinet, a remote expanding module, a site data bus, a contact screen, an analog quantity and switching value input module, various monitoring probes, a travel switch, a level instrument and an executable section. A monitoring net adopts a form of combining a PROFIBUS DP site data bus and an industrial ethernet. A monitoring method for the system comprises: (1) monitoring the absorbing well water level; (2) monitoring the state for starting a high pressure switching cabinet by a water pump; (3) judging the valve levels of a gate valve, a ball valve of a water jet pumping device and a water distribution gate; (4) judging the valve levels of a vacuum pump ball valve; (5) measuring each equipment temperature measuring point; (6) measuring signals of a pressure sensor and a negative pressure sensor; (7) judging system faults; (8) automatically controlling the start-stop and operation numbers of the water pumps according to the absorbing well water level conditions; and (9) setting power supply peak avoiding time periods, and automatically selecting starting time and numbers of a pump. The system improves the system working reliability, reduces the equipment fault rate, and adopts a three-stage monitoring structure for a draining system.

A valve assembly for use in heating, ventilating and air conditioning systems. The valve assembly includes a valve body having a chamber in which is rotatably mounted a quarter-turn flow control ball valve. A valve body nut having an outlet port is threadably mounted on the valve body adjacent the outlet end of the valve body chamber. A flow venturi is removably mounted in the inlet end of the valve body. A pipe union tailpiece is detachably mounted on the inlet end of the valve body. A pair of pressure/temperature readout ports are mounted on the valve body for use in determining the rate of fluid flow through the venturi. A vent plug is mounted on the valve body for venting air from the ball valve chamber.

The invention relates to a dry ice sublimation hole bottom refrigerating and pressure keeping sampler and a sampling method. The device is mainly composed of a suspension differential action mechanism, a single action mechanism, a control mechanism, a refrigerating mechanism and a pressure keeping mechanism. The method comprises: using dry ice as refrigerant, alcohol as refrigeration assisting catalyst and secondary refrigerant, and applying low temperature alcohol to the hole bottom to refrigerate the rock core; closing a ball valve to keep pressure of the rock sample so as to inhibite the decomposition of the hydrate rock core; dismounting a blocking tube and a drill bit when sampling, dismounting a clamp spring and a clamp spring seat, pulling out a half combining tube and the rock core from the rock core tube, and using a liquid nitrogen holdup vessel or a high pressure container to keep the rock core sample. When drilling for sampling the rock core, the external tube and the drill bit gyre, but the internal tube assembly does not gyre, thus avoiding the damage of mechanical force to the rock core caused by the gyrus of the drilling tool to a larger degree, improving the rock core sampling rate, integrity and representativeness more effectively, and realizing pure refrigeration sampling as well as a combination of refrigeration sampling and rock core pressure keeping; compared with the prior art, the invention has simple process, convenient operation and greatly reduces the cost.

A compact manifold ball valve having a valve body defining a valve chamber and having first and second ends and a first flow passage intersecting the valve chamber a cylindrical sealing surface defining a bonnet and valve stem passage also intersecting the valve chamber. A seat and ball retainer is threaded into the second end of the valve body and provides for support and positioning of a pair of trunnion support elements and a pair of seat assemblies. A valve ball having opposed trunnions is rotatable between open and closed positions within the valve chamber and is supported by the trunnion supports. A valve stem and bonnet assembly is secured and sealed to said valve body and is actuated to rotate the valve ball for opening and closing thereof. The valve seats are capable of metal-to-metal sealing with the valve ball in the event of heat destruction of said face seals to provide the valve with a fire-safe character. The seats incorporate high temperature graphite filament seals for fire-safe sealing between the valve seats and valve body in the event of heat destruction of said back seals. Other internal metal surfaces are arranged for metal-to-metal fire-safe sealing in the event the primary seals are destroyed by heat.

A direct expansion/direct exchange (“DX”) geothermal heating/cooling system having a plurality of pin restrictors positioned in housing units at ground accessible locations. The pin restrictors are preferably located near the compressor unit and on the field side of the distributor. Refrigerant is substantially equally distributed by a distributor to substantially equally sized line sets in the DX system with multiple wells. The distributors are place in either horizontal or vertical inclinations with the pin restrictors situated on the field side of the distributor in each individual liquid refrigerant transport line. A cut-off ball valve is located within the liquid refrigerant transport line on each side of the respective pin restrictor housing units. A filter/dryer is place within the same liquid refrigerant transport line segment as the pin restrictor(s) with a refrigerant flow shut-off valve being situated on each side of the liquid line segment containing the filter/dryer and the distributor.

The invention discloses an energy-conservation and low-impact hydraulic cylinder test testbed hydraulic control system. The system comprises a constant pressure variable pump, two electromotors, two electromagnetic unloading overflow valves, six check valves, two energy accumulators, an electrohydraulic proportional direction valve, two speed regulating valves, four ball valves, an oil supplementing pump, a proportional throttle valve, an electromagnetic reversing valve, a loading hydraulic cylinder, six pressure sensors, two temperature sensors, a displacement sensor, a force sensor, two travel switches, six pressure measuring connectors, six pressure gages, a heater, a liquid level liquid temperature gage, a filter and an oil tank. The energy-conservation and low-impact hydraulic cylinder test testbed hydraulic control system has the advantages that stable energy is provided for low-impact control over the speed of a tested hydraulic cylinder while energy is conserved, low-impact stable control over the loading force is achieved, meanwhile, the actual work condition that loads of the hydraulic cylinder probably change continuously in work can be simulated, all the work conditions of the loads of the hydraulic cylinder can be simulated, and power input is reduced.

The invention discloses a shield development machine hydraulic advancing system with proportion flow pressure compound control. It includes two bits two-way electromagnetic ball valve, proportion adjusting valve, proportion overflow valve, and three-bit four-way electromagnetic change valve, hydraulic lock, balancing valve, pressure sensor and hydraulic oil cylinder with inner shift sensor. The advancing system uses the proportion adjusting valve to control the advancing speed, uses proportion overflow valve to control the advancing pressure, it realizes the compound control of advancing speed and pressure with proper control tactics. Because the invention uses the compound control technology of the proportion flow pressure, it can realize the control to the advancing speed and advancing pressure in the advancing process of the shield development in real-time, thus realizes the control to the soil barn pressure, stratum stability and the ground sedimentation. The system in the invention can be adapted to each kind of stratums, realizes the control to the posture and direction precisely, the energy-saving effect of the system is good.

A breathing gas delivery system and method provides a flow of breathing gas to a patient. The gas flow is purposely interrupted for the patient's exhale phase in order to minimize irritation and injury to nasal tissues due to constant, uninterrupted flows. Embodiments include an oscillating ball valve that interrupts oxygen supply during the patient's exhale phase, cannula tips that are shaped to minimize trauma, and a sleep apnea treatment system that interrupts breathing gas supply during the patient's exhale phase.

A device and method are provided for regulating two types of flow from a nozzle. The first flow is a deluge stream and the second flow is a fog spray. The deluge stream is controlled by the nozzle operator using a first flow control valve, such as a ball valve. The fog spray is controlled by the nozzle operator using a second flow control valve. The nozzle permits the nozzle operator to manually control the flow of the nozzle, thereby permitting quick regulation and adjustment of flow types and amounts to accommodate then existing fluid pressure and supply conditions to address fluid application needs.

A downhole fluid diverter tool includes a tool body having a central bore therethrough and a bypass port formed in an outer diameter thereof, a spring-biased piston disposed within the tool body, a piston port in the spring-biased piston configured to axially align with the bypass port to control fluid flow outward from the central bore, and a rotatable ball valve aligned within the central bore of the tool body and configured to control fluid flow through the central bore, wherein the bypass port and the ball valve are configured to be cycled multiple times between open and closed positions while in a wellbore.

A valve seat for a ball valve in an adjustable medical valve is described. The valve seat is formed as a cone in a manifold. The cone is formed by rotating a line that intersects a central axis of the valve seat around the central axis. The angle of the intersection between the line and the central axis is doubled to form the included angle of the valve seat. Generally, the narrower the included angle, the better the tolerance of the assembled valve for variations in the spring constant of the pressure regulating spring. Specifically, the present invention has included angles between 0 and 90 degrees with the preferred included angles being between 10 and 40 degrees. A valve embodying the valve seat is also disclosed.

A system for testing thermal performance of a vehicle power battery belongs to the field of electric vehicle batteries. The system includes a high-temperature explosion-proof box; a pressure sensor, a temperature sensor, a heating and cooling device, a battery module and a circulating fan are arranged in the high temperature explosion-proof box; the circulating fan is connected with a circulating motor; the high temperature explosion-proof box is provided with an exhaust hole; the exhaust hole, a ball valve, a sampling port, a cut-off valve and a gas chromatograph are connected in sequence; the ball valve is connected to a gas collecting bag through an air exhaust pipe; the pressure sensor and the temperature sensor are connected to the computer through a data collector; a charge-discharge machine is connected to the battery module through a socket; the high temperature explosion-proof box is provided with an observation window; and the observation window is connected to a camera through an endoscope. The system can perform thermal property test of the battery, battery discharge analysis and thermal runaway test of the battery. The system has the advantages of simple structure and low cost, can carry out test on multiple functions of the lithium ion battery, so as to realize design optimization on the structure of the battery pack; and the system has broad market prospects.

A ball stop valve (10) allows liquid to enter a reciprocating piston pump when internal suction is great enough to raise the ball (13) and create a space between the ball (13) and a seat (9). This invention allows the user to easily insert or remove rings (15) into the ball inlet valve, either above or below the ball (13), so that the space between the ball (13) and the seat (9) can be adjusted. The valve (10) is easily accessible to the user and all components of the ball valve (10) are removable.

A valve 100 comprising a one piece valve body 112 having an axial fluid bore 124 and a rotatable fluid control element 110. The body 112 includes an integral bracket 128 which provides an open access area between the bracket 128 and the main body 112 of the valve 100. A valve stem 130 is disposed within a stem bore 135, and 137 extending from the valve body 112 to the bracket 128, and engaging the flow control element 110. A contiguous single piece gland flange 142 secures packing 134 disposed between a valve body bore 137 and the stem 130. The stem 130 includes an enlarged shoulder 152 which engages a contiguous single piece shear bushing 148 having a diameter greater than the diameter of the stem bore 130, thereby preventing removal and/or blowout of the stem 130 without prior removal of the shear bushing 148.

A wellbore pressure isolation apparatus is deployed in a wellbore and has a sealing element that can be activated to seal against an interior surface of a surrounding tubular. Once set, a ball valve in the apparatus restricts upward fluid communication through the apparatus, and another ball valve in the apparatus can restrict downward fluid communication through the apparatus. These ball valve can have disintegratable balls intended to disintegrate in wellbore conditions after different periods of time. To facilitate deployment of the apparatus in a horizontal section of the well bore, the apparatus has a plurality of rollers positioned on a distal end. In addition, the apparatus has a ring disposed about the body between the distal body portion and an adjacent body portion. The ring has an outside diameter at least greater than that of the adjacent body portion to facilitate pumping of the apparatus in the wellbore.

The invention provides a frequency and flow changing heat pump water heater, relates to a liquid heater with a heat generation device by using a heat pump. The frequency and flow changing heat pump water heater comprises a unit part, a water circulating part, water tubes and communication lines connected inside the water circulating part. The unit part comprises a frequency-changing compressor, a cross tee change valve, a double pipe condenser, an unloading valve, an electronic expansion valve, an evaporator, a fan, a controller, various temperature sensors and pressure sensors. The water circulating part comprises a pump, an outlet valve, a ball valve, a water tank, a water temperature sensor and a filter. The frequency and flow changing heat pump water heater takes the frequency-changing compressor as the power source of the system, takes the electronic expansion valve as a throttling device and uses the water temperature sensor to prevent freezing. Compared with combustion gas, fuel oil, coal or electronic water heater, the frequency and flow changing heat pump water heater has safety, environmental protection and energy saving properties. Compared with the heat pump hot water units, the throttling of which uses rated frequency compressor and thermostatic expansion valve or capillary tubes, the frequency and flow changing heat pump water heater has high heating output power, good heating effect and good environmental adaptability.

The invention discloses a PVC material and a preparation method thereof. The PVC material comprises the following substances according to parts by weight: 100 parts of PVC, 2-8 parts of stabilizer, 2-6 parts of processing agent, 1.5-2.5 parts of lubricants, 4-12 parts of filler, and 0.05-1 part of colorant. Compared with the prior art, the invention adopts food sanitation-level or nontoxic raw materials; the mobility of the manufactured material is good, and the molding temperature and molding pressure of tubular products and pipe fittings can be reduced, thus preventing the PVC material from pyrolyzing. The PVC-U water supply tubular products, pipe fittings and pressure-proof ball valves made from the material have good acid and alkali resistance, inoxidability and ageing resistance, and the pressure resistance of the pressure-proof ball valve is more than or equal to 2.5MPa (the pressure resistance of similar products is only more than 1.6MPa), thus fully meeting food and chemical use requirements.

An automatic flocculant adding system for treating the sewage in coal dressing plant is composed of a feeding tube with flowmeter and concentration meter, concentrating pool, a detecting instrument on the interface of said concentrating pool, flocculant storage tank with ball valve, pump and sensor, flocculant adding tube, industrial computer, and electric control cabinet. Its method features that when liquid level is lower, the ball valve is opened to add flocculant under the control of industrial control computer and when liquid level is higher, the ball valve is closed and the concentration of overflowed liquid is determined while it is determined by industrial control computer that if the flocculant is added.

The invention discloses a rock mechanical test loading device under brine corrosion conditions, comprising a container, a ball-end cylindrical indenter, the upper jaw of a fixture, the lower jaw of the fixture and a circulation pump. Glass cement is applied in two pre-reserved slits on a stainless steel frame, an organic glass plate is inserted into the slits, symmetrical screen sandwich grooves are welded on the container, screens are inserted into the symmetrical screen sandwich grooves, a drain hole on the bottom of the container is sealed by a screw plug and a rubber gasket, a ball valve is connected with the container, and the ball valve on the container is connected with a circulating pump through a transparent plastic hose. A rock sample splitting fixture is disposed in the container and consists of the arc-shaped upper jaw and the arc-shaped lower jaw of the fixture, and the upper jaw of the fixture is connected with the ball-end cylindrical indenter. The invention has simple structure and convenient operation, and can simulate the actual operating condition that brine and a flow field cooperatively act on a dissolution cavity in the cavity creating process of gas (oil) storage, thus obtaining more actual and reliable parameters detected by indoor test.

A control valve of high-pressure pneuamtic valve is composed of main valve and magnetic pilot valve which is an electromagnetic high-pressure ball valve. Said main valve consists of valve cover, conic valve core, valve bush and main body. The sealing surface of conic valve core is made of vulcanized rubber. The PTFE is used for the seal between conic valve and valve bush. Its advantages are simple and compact structure, reliable sealing, and high flow controlled by electronic signals.

A pressure regulating reservoir is structured such that a major diameter portion of a shaft contacts a bottom surface of a valve seat, whereas a top surface of a piston does not contact an upper end surface of a wall forming a reservoir chamber in a housing. Therefore, a lift amount of a ball valve can be set using a portion above the major diameter portion of the shaft that contacts the bottom surface of the valve seat. That is, the lift amount can be set using only a dimension in the axial direction of a minor diameter portion of the shaft.

A fluid flow assembly includes a storage container connected to a fluid coupling and retaining cylinder. The connection is secured by a bayonet connection and walls between the bases of the container and cylinder. The storage container has a ball valve assembly disposed at its base, which includes an upper housing, a lower extension, and a ball valve axially disposed therein. The cylinder includes an axial hollow elongate fluid outlet on the base, co-axially aligned with an outlet port of the ball valve assembly of the container. The upper portion of the fluid outlet is a male coupling, which penetrates into the outlet port, when the container is connected to the cylinder, and axially displaces a valve ball from its closed position into an open position, enabling fluid flowing thru the ball valve assembly of the storage container, into the hollow fluid outlet of the cylinder, and downstream of it.

A prefabricated in-wall water service box with a five sided deep drawn stainless steel enclosure that has an open side with a reservoir lip and three closed sides integral with a top and bottom so that a reservoir is formed that is drained through a drain hole into a stainless steel nipple that is welded to the bottom and extends downwardly from the drain hole while hot and cold water control valves are mounted inside the enclosure through holes to a fittings located outside the enclosure at its two side walls. A trim bezel with a planar facing flush with a mounting wall is secured to the enclosure when it is mounted to two studs by two mounting brackets affixed to the two side walls by stainless steel screws. The hot and cold water control valves are ninety degree stainless steel ball valves while the brass hot and cold water fittings are a ninety degree elbow connected to an extension nipple that can accept a sweated copper connection, a compression fitting and a direct pipe thread connection while the side walls, the bottom and the top are joined with the back wall by four ninety degree radius turns.

The invention relates to a main machine of a multi-station rotary ball valve assembly machine. The main machine comprises a circular worktable, a transmission device and a drive device. Twelve locating fixtures are equidistantly arranged on the circular worktable along the circumference, and a valve body teflon sealing base assembling device, a valve body teflon sealing base press-fitting device, a valve body assembling valve rod device, a valve rod locating and valve body middle hole pressing cap locking device, a valve body installation valve ball device, a valve ball press-fitting device, a valve deck dispensing and valve deck and valve body pre-tightening device, a valve deck torsion applying device and a finished product discharge device are arranged corresponding to the positions of the locating fixtures on the periphery of the circular worktable in sequence. Through the structure, the main machine is matched with a vice machine, so assembling of ball valves can be completed by only one operator, the ball valve assembling efficiency is improved, and the defective percentage is reduced.

The invention relates to a multiphase flow erosion local corrosion testing apparatus. The testing apparatus comprises an ore pulp pump, a slurry tank, a stirrer, a pressure gage, an electromagnetic flowmeter, a pipe flow erosion pipe section, a jet flow erosion pipe section, a thermocouple and a low temperature constant temperature circulator. The testing apparatus is characterized in that the stirrer is arranged above the slurry tank, the thermocouple is mounted in the slurry tank and is connected with the low temperature constant temperature circulator, the bottom end of the slurry tank is connected with the ore pulp pump through a feed pipe, a ball valve is installed on the feed pipe, an outlet pipe of the ore pulp pump is provided with a first stop valve and is divided into two paths through the stop valve, one path returns to the slurry tank after passing through a second stop valve, and the other path returns to the slurry tank after passing through the pressure gage, the electromagnetic flowmeter, the pipe flow erosion pipe section and the jet flow erosion pipe section. According to the invention, characteristics of pipe flow and jet flow erosion-corrosion testing machines are combined, pipe flow erosion and jet flow erosion local corrosion tests can be simultaneously or individually carried out, and the testing apparatus has the characteristics of a small size, a simple structure, low manufacturing cost and good operationality.

A universal, fluid transfer, Q-D coupling assembly for connecting water supply hoses to fire-fighter's wild-fire backpack tanks comprising a two or three-part combination: #1) a ⅝″ female member having an axially-slideable detent collar and an internal, spring-biased fluid shut off flap, and #2) a male nozzle/reducer/collar member having a detent engaging groove. A ball valve is connected to element #2, either integral as #2A, or as a separate assembly element #3. Both elements #2 and #3 have a female threaded collar that receives the nominal 1″ male fitting of a garden hose. The parts can be supplied as a kit. Element #2 is a unitary fitting combining a hydraulic-sized, male Q-D nozzle, a reducer section and a standard garden hose-sized, female internally-threaded fixed collar. This element is preferably supplied with an integral ball valve intermediate the reducer portion and the female collar.

The invention relates to a high pressure resistant drilled hole sealing method. The method comprises the following steps of: inserting a first grouting pipe into a constructed drilled hole; pouring a high pressure resistant sealing material I with a grouting thickness L3 into a position which is 27 to 29m away from the top of the drilled hole by using the first grouting pipe, and after pouring, closing a ball valve; inserting a second grouting pipe with the depth of 1 to 2m, a third grouting pipe with the depth of 5 to 6m, and a return pipe which is positioned at the top of the drilled hole and has the depth of 2 to 3m into the dilled hole respectively; pouring a high pressure resistant sealing material II with a grouting thickness of L1 into the hole mouth of the drilled hole by using the second grouting pipe and sealing the hole, and after pouring, closing the ball valve; and after the high pressure resistant sealing materials at the front and rear sections in the drilled hole are solidificated, pouring compound polyurethane into an interlayer formed by blocking of the two sections of high-intensity sealing materials by using the third grouting pipe until the interlayer with the thickness L2 is filled, and closing a third ball valve and a fourth ball valve. The method is simple, and easy to operate, and has a good effect.

The invention relates to benthonic sampling equipment, and aims at providing a hydraulically-driven system for sampling and sealing a benthonic multibarrel columnar sample. The system comprises a plurality of tubular samplers with ball valves for sealing and a principal axis in vertical direction; a crossed hinge is movably sleeved on the principal axis; the principal axis of the upper part and the lower part of the crossed hinge is respectively provided with a principal axis anchor ear or a positioning key for limiting the moving distance of the crossed hinge; a plurality of supporting frames are fixed on a circular tube of the outer layer; the tail end of the supporting frame is a supporting pin; and the adjacent supporting frames are connected through a bracket. The benthonic sampling equipment can avoid the situation that sediment on the surface layer is dispersed and a sample is squeezed or shaken to fall off caused by the pressure wave effect before sampling and save the space and mechanism setting; simultaneously, after the sampling is finished, the benthonic sampling equipment can make the sample directly enter a pressure maintaining cylinder for pressure maintenance, realize the function of compression and pollution resistance, and keep that the sampler is always positioned in a vertical position in the seabed with complex terrain when the sampler is in a working state.