457 results about "Shunt valve" patented technology

A hydraulic circuit controls flow of fluid between first and second ports of a hydraulic actuator, such as a cylinder/piston arrangement and each of a supply conduit and a tank return conduit. The hydraulic circuit operates in standard powered operating modes as well as powered and unpowered regeneration modes. In a powered operating mode, a conventional pressure compensated spool valve determines the velocity of the hydraulic actuator. A workport blocking valve connects one workport of the spool valve to the first port and the other workport is connected to the second port. A regeneration shunt valve is directly connected between the first and second ports of the hydraulic actuator. In a regeneration operating mode or a mix of powered and regeneration modes, a combination of the spool valve, the workport blocking valve, and the regeneration shunt valve determines the velocity of the hydraulic actuator.

An externally programmable shunt valve assembly that includes a magnetic rotor that is operable in response to an externally applied magnetic field and configured to increase or decrease the working pressure of the shunt valve assembly in finite increments.

A resistive shunt valve (RSV) for draining cerebrospinal fluid. The RSV is comprised of a conduit housing and a valve member. The conduit housing is adapted for continuously conveying a flow of cerebrospinal fluid (CSF) with the valve member metering the flow of CSF therethrough. The valve member has a plurality of balls and at least one valve seat, with the number of balls being greater than the number of valve seats. The balls register within the valve seats in the direction of CSF flow. Small notches or irregularities are provided in the valve seats. Metering of CSF can be controlled by the housing diameter, ball diameter, number of balls, ball weight, irregularity of the valve seats, surface characteristics of the ball, and ball material.

The invention relates to a cold (warm) water circulation energy efficiency control method for a central air-conditioning system, which is characterized in that a water outlet end of an air conditioning unit of a circulation loop is respectively provided with temperature and pressure detections; a water outlet end of an air conditioning load is respectively provided temperature and pressure detections; temperature and pressure detections are respectively arranged between water inlets of a water pump and the air conditioning unit; a cold (warm) water shunt bypass valve is an electrical control valve; and a variable volume pump and the electrical control valve are respectively controlled by detecting the air conditioning unit and the air conditioning load. The water pump and/or the bypass shunt valve are adjusted by respectively detecting the temperature and the pressure at both ends of the air conditioning unit and the air conditioning load so as to meet the requirements of the air conditioning unit, the air conditioning load and the air conditioning effect for the flow rate to achieve the effect that under the best using effect, the system works in the best energy efficiency state,has adaptive ability and can save electric energy over 50 percent.

An HVAC system including a first diverter valve configured to divert, in varying amounts, an airflow entering the valve out two different outlets, in a manner that does not create a substantial increase in backpressure due to the diversion or otherwise substantially restrict the general flow of air in the HVAC system. The system further includes a first sensor assembly configured to sense a first environmental condition that includes at least one of temperature and a phenomenon indicative of the makeup of room air, a control unit, and a user interface unit, wherein the control unit is in communication with the diverter valve and the first sensor assembly.

The invention relates to a supercritical organic Rankine dual cycle waste heat recycling system and belongs to the field a common heat exchange. The system comprises a medium temperature overheater, a medium temperature expander, a medium temperature condenser, a medium temperature compression pump, a medium temperature steam generator, a medium temperature expander crankshaft, a medium temperature output power device, a low temperature overheater, a low temperature expander, a low temperature condenser, a low temperature compression pump, a low temperature steam generator, a low temperature expander crankshaft, a low temperature output power device, an exhaust shunt valve, a low temperature shunt valve and so on. The connection of the elements is as follows: the medium temperature steam generator, the medium temperature overheater, the medium temperature expander, the medium temperature condenser and the medium temperature compression pump are connected in turn to form a loop to form a medium Rankine cycle; and the low temperature overheater, the low temperature expander, the low temperature condenser, the low temperature compression pump, the low temperature shunt valve and the low temperature steam generator are connected in turn to form a loop to form a low temperature Rankine cycle. The system is suitable to be used on road automotive engines which are variable in operating conditions and diversified in energy states for recycling waste heat.

The invention provides a sampling system of unattended shipborne multichannel film filtering water samples, relates to a sampling device of water samples and provides a sampling system of unattended shipborne multichannel film filtering water samples capable of automatically taking water, washing, filtering and water sampling. The sampling system is provided with a constant flow pump, a multi-channel switch valve, a shunt valve, a filtering device, a three-way valve, a vacuum bottle, a washing bottle, a sampling bottle, a multi-channel negative pressure control valve, a vacuum system, a control system and a computer. An injection port of the multi-channel switch valve is connected with the constant flow pump; the shunt valve is connected with a discharge port of the multi-channel switch valve; the filtering device is connected with the discharge port of the multi-channel switch valve; the three-way valve is connected with the filtering device, the washing bottle and a sampling bottle; the vacuum bottle is connected with the vacuum system; air inlets of the multi-channel negative pressure control valve are connected with the vacuum bottle, wherein one of the air inlets is connected with the atmosphere and an air outlet is connected with the vacuum system; and the control system is connected with the computer. The sampling system has the advantages of simultaneous implementation of sampling and filtering of water samples, short filtering period, high degree of automation and stable performance and the like.

The invention discloses an automatic cold water and hot water diverting valve, which comprises a valve body provided with a valve cavity, wherein the valve body is provided with a water inlet, a cold water outlet and a hot water outlet that are communicated with the valve cavity; a piston type valve core is further arranged in the valve cavity; two-way shape memory alloy is further connected between the valve core and the valve body; a phase transition temperature of the two-way shape memory alloy is 40-55 DEG C; when the temperature of the two-way shape memory alloy is less than the phase transition temperature, the valve core can block the hot water outlet and communicate the water inlet with the cold water outlet; and when the temperature of the two-way shape memory alloy is greater than the phase transition temperature, the deformation occurs so that the valve core can displace to block the cold water outlet and communicate the water inlet with the hot water outlet. The automatic cold water and hot water diverting valve can automatically divert a cold water part in a hot water supply pipe so as to save water and avoid waste; and further the automatic cold water and hot water diverting valve is simple and compact in structure, low in cost and convenient to install, and achieves the automatic control.

The invention provides a temperature control battery box and a temperature control method thereof. The temperature control battery box comprises a controller, a temperature control system and a temperature sensor, wherein the controller controls the temperature control system to operate in one of a heat dissipation mode, a heating mode and a balance temperature mode according to temperature conditions; the temperature control system comprises N heat-conducting plates, a water pump, a cooling water tank, a shunt pipe, a shunt valve, a return pipe, a frequency converter and an induction heater; a first outlet of the shunt valve is connected with an inlet of the cooling water tank; a second outlet of the shunt valve is connected with an inlet of the water pump; when the temperature control system operates in the heat dissipation mode, liquid is introduced into the cooling water tank through the first outlet of the shunt valve; when the temperature control system operates in the heating mode and the balance temperature mode, liquid flows back to the water pump through the second outlet of the shunt valve. The temperature control battery box can be designed into a totally sealed box according to a conduction heat transfer principle; by adoption of the conduction heat transfer, the heat transfer efficiency is high, and the temperature is rapidly regulated.

The invention discloses a method for a raising bridge without closing the traffic and a device which is specially used for the method. The device provided by the invention connects more than two self locking jacks in parallel by a dividing valve and the self locking jacks are supplied with oil by the same oil pump. The invention also provides the method adopting the device to raise the bridge. By applying the special device and the method which are provided by the invention, the operation technique is simple and the replacement of a support saddle can be realized under the condition without interrupting the traffic, so as to avoid the traffic crowd caused by closing the traffic, and alleviate the pressure of leading and distributary of the vehicles, thereby having obvious economic and social benefits.

An apparatus capable of generating flow in cerebrospinal fluid (CSF) shunt systems by vibrating the shunt, tubing or shunt valve dome, or applying cyclical pressure to the various parts of the shunt system. A method of generating flow and method of using the apparatus in shunt patency assessment, for example, hydraulic resistance assessment, is also disclosed. The apparatus allows, in conjunction with a thermal dilution method or radionuclide method, a quick CSF shunt patency assessment based upon CSF shunt resistance and not upon CSF flow or intracranial pressure (ICP) separately. This provides a more objective measure of shunt obstruction compared to other methods. Furthermore, the apparatus can be used to enhance flow in shunts, identify partial occlusion before symptoms occur, differentiate between patent, partially-occluded and occluded shunts. The apparatus can be used to generate flow in shunts if there is a need to lower ICP or move drugs administered via an injection chamber or a shunt dome.

The invention discloses a wearable nursing machine work head. The wearable nursing machine work head is characterized by comprising a work head body and a connecting component used for connecting the work head body and a nursing machine host; the connecting component is internally provided with a fan and a shunt valve; the fan is connected to an air outlet in the rear end of the work head body through an air passage arranged inside the connecting component; the shunt valve is connected to each spraying head in the work head body through a hose. The wearable nursing machine work head provided by the invention is compact and small in structure, and can be placed on a common bed for people to use by fixing with a human body in a manner of a bandage; a plurality of ancillary auxiliaries, such as a mattress, a U-shaped mat and the like, needed when a traditional nursing machine is used are eliminated, so that the manufacturing cost is reduced and the use is convenient; moreover, the human body and the work head are bound as a whole, the space is not limited, a patient can freely turn over on a bed, so that the discomfort of the patient can be effectively lightened.

The invention discloses a multi-channel proportional flow distribution valve bank applicable to various variable pump systems, which comprises a first pressure pipeline, a second pressure pipeline and an oil return line, wherein the first pressure pipeline and the second pressure pipeline are communicated by an external oil pump; the oil return pipeline is communicated with external return oil; the first pressure pipeline is communicated with oil inlet ends of a first spillover valve, a first tee flow valve, a first proportional reversing valve and a second proportional reversing valve respectively; and the second pressure pipeline is communicated with oil inlet ends of a second spillover valve, a second tee flow valve, a third proportional reversing valve and a fourth proportional reversing valve correspondingly and respectively. The multi-channel proportional flow distribution valve bank improves manipulation performance considerably, realizes proportional stepless speed regulation of a plurality of actuating mechanisms under the condition of respective different loads. A main oil line is unloaded by a shunt valve so as to prevent pressure shock effectively and slow down and even eliminate mechanism shake effectively during proportional speed regulation; and the middle of the multi-channel proportional flow distribution valve bank is in transitional connected with a logic switch valve, two actions are non-interfering during manipulation, and the synchronous operation of multi-action can be realized.

The invention relates to the field of waste battery treatment, in particular to a lithium battery treatment system and a treatment process. The lithium battery treatment system comprises a shredder, acrusher, a magnetic separator, a pulverizer, an analyzer, a sorting device, a shunt valve, a collector I, a collector II, a collector III, a pulse dust collector I, a pulse dust collector II, a pulsedust collector II, a high-pressure fan I, a high-pressure fan II, a high-pressure fan III, an airflow sorter I, an airflow sorter II, an airflow sorter III, an induced draft fan I and an induced draft fan II, wherein the shredder is sequentially connected with the crusher, the magnetic separator, the pulverizer, the analyzer, the sorting device, the shunt valve, the collector I, the pulse dust collector I and the high-pressure fan II. The treatment system has a reasonable structural design, complete crushing of lithium batteries, high purity of recovered powdery substances, low pollution andhigh efficiency; the treatment process has simple and reasonable steps, low environmental pollution in a treatment process, high recovery rate and strong practicability.

The invention relates to a diesel engine starting assistance system and a diesel engine starting assistance method applicable to a high attitude area. The system comprises an auxiliary booster air intake pipe, low-pressure-ratio high-flow fluid machinery, an atmospheric pressure sensor, a cooling fluid temperature sensor and a control unit, wherein an air inlet is connected with the air intake end of a turbine booster air intake pipe and the air intake end of the auxiliary booster air intake pipe respectively through an air shunt valve; the air intake end of an intercooler is connected with the air exhaust end of the turbine booster air intake pipe and the air exhaust end of the auxiliary booster air intake pipe respectively through an air confluence valve; the low-pressure-ratio high-flow fluid machinery is arranged in the auxiliary booster air intake pipe; the air exhaust end of the intercooler is connected with the air intake end of an engine; the atmospheric pressure sensor is arranged at the air inlet; and the cooling fluid temperature sensor is arranged in a transmitter. Compared with the prior art, the diesel engine starting assistance system disclosed by the invention has the advantages that the start success rate of the engine at high altitude can be increased, and the start acceleration time of a low-compression-ratio diesel engine can be shortened, so that the diesel engine can enter a stable idling state more quickly.

A locking assembly is provided to simply and effectively prevent any unintentional adjustment of the adjustable valve mechanism in a fluid flow control device, without compromising the function of the device. The locking assembly generally includes at least one gripping arm for frictionally engaging at least a portion of the adjustable valve mechanism, and an actuating mechanism for controlling the deployment and release of the gripping arm. The locking assembly prevents unintentional adjustments that can adversely affect the pressure settings of the fluid flow control device. In particular, the locking assembly prevents unintentional adjustment, such as may be caused by the presence of a strong external magnetic field. The locking assembly can be easily disengaged, such as through the application or removal of an external mechanical force, to allow a clinician to adjust the pressure settings of the fluid flow control device as necessary.

The invention discloses a rotor blade multi-modal vibration excitation device and an excitation method thereof. The rotor blade multi-modal vibration excitation device is characterized in that a motoris used for driving a main shaft to rotate through a shaft coupler; the main shaft is connected with an integral blade disk through a spline; gas sprayed from an air pump is conveyed to excitation nozzles through a shunting valve to realize pneumatic excitation of the integral blade disk; a processing unit is connected with a rotation speed sensor and a blade end timing sensor; and the processingunit generates the vibration information of the rotor blade according to a recorded rotation speed time base signal and a blade arrival time signal. The excitation nozzles of the device are uniformlydistributed, so that multi-order vibration modal or certain high-order single-modal vibration can be excited according to the test demand. The rotor blade multi-modal vibration excitation device cansolve the problem that high-order modal vibration and multi-modal vibration are difficult to generate for the blade, and has important significance for the building of a non-contact measurement bladeend timing system of a rotor blade.

A dishwasher includes a washing inner container, a spray arm, a heating device and a shunt valve. The washing inner container is provided with a washing outlet, the spray arm is arranged in the washing inner container, and the spray arm is provided with a spray inlet; the heating device is provided with a heated water inlet and a heated water outlet, the shunt valve is provided with a first connector, a second connector, a third connector and a fourth connector, the first connector is connected with the washing outlet, the second connector is connected with the spray inlet, the third connectoris connected with the heated water inlet, and the fourth connector is connected with the heated water outlet. The dishwasher includes at least two working modes; in the first mode, the first connector and the second connector of the shunt valve are communicated, the first connector and the third connector of the shunt valve are communicated; in the second mode, the fourth connector and the secondconnector are communicated. According to the embodiment, in the non-heating period, washing water does not flow through the heating device, the water flow resistance can be reduced, the washing performance is improved, and the design of a system pipeline is simple and compact.