158 results about "Fluid exchange" patented technology

A thermal conditioning system including a heat-transfer circuit, a refrigerant circuit including successively: a compressor, a first bi-fluid exchanger and a second bi-fluid exchanger arranged jointly on the refrigerant circuit and on a main loop of the heat-transfer circuit, a first expansion valve, a third bi-fluid exchanger arranged jointly on the refrigerant circuit and on a secondary loop of the heat-transfer circuit, a first branch of the heat-transfer circuit being configured so that the heat-transfer liquid leaving the first bi-fluid exchanger returns to the first bi-fluid exchanger without passing through the second bi-fluid exchanger, and including a second heat exchanger configured to exchange with a second air flow. A second branch connects the first branch to the main loop, and includes a third heat exchanger configured to exchange with the second air flow.

The invention relates to the technical field of plate heat exchangers, in particular to an energy-saving self-cleaning plate heat exchanger which comprises a plate heat exchanger body, four parallel connecting pipes are arranged in the plate heat exchanger body, and a driving mechanism is fixedly mounted on the outer side of one end of each connecting pipe. The working end of the driving mechanism is connected with a rotating rod and a connecting shell, the connecting shell is located in the connecting pipe and is rotationally connected with the connecting pipe in a sealed mode, the rotating rod penetrates through the waterproof assembly and then extends into the connecting pipe, and the section, located in the connecting pipe, of the side wall of the rotating rod is fixedly connected with a spiral blade. Through the design of the spiral blades and the flow dividing rods, stirring turbulence of fluid during conveying is increased, the possibility of incrustation and blockage is reduced, meanwhile, heat exchange fluid between the plates is treated through the ultrasonic transducers, the turbulence is increased and the uniformity of the fluid is improved in cooperation with internal vibration pieces, and the heat exchange efficiency is improved. Therefore, the heat exchange effect of the whole plate heat exchanger is improved.

Systems and methods for infection prevention and treatment in biological conduits using electroporation or pulsed field ablation (PFA). The system includes an elongate member, such as a dialysis catheter, vascular access device, or peritoneal dialysis conduit, with at least one electrode positioned along, within, or around the member. A control unit applies pulsed electric fields to inhibit microbial colonization, disrupt bacterial biofilms, and alter permeability of bacterial or endothelial cells to enhance sterility or fluid exchange. The system may use real-time impedance monitoring, microbial detection, or fluid composition analysis to adjust electroporation parameters. Electroporation may synchronize with dialysis cycles or antimicrobial lock solutions. The method includes automated, clinician-controlled, or sensor-triggered treatments to reduce infections and improve device longevity. The system provides an alternative or augment to antibiotics, reducing the risk of drug-resistant infections while improving the longevity and safety of medical implants.

The utility model relates to the technical field of pipe and pipe fitting pressure detection, in particular to an inflatable sealed pipe and pipe fitting air pressure and hydraulic pressure detection device, which comprises a case, a water tank, a lifting mechanism, a linear driving assembly and a clamping mechanism, the clamping mechanism comprises a fluid exchange part and a clamping assembly, and a connector and an air escape valve are mounted on the fluid exchange part. A first runner and a second runner are arranged in the fluid exchange part, one end of the first runner communicates with the end face connected with the clamping assembly, and the other end of the first runner communicates with the connector; one end of the second runner communicates with the end face connected with the clamping assembly, and the other end of the second runner communicates with the air release valve; the connector is used for being connected with external pressurization equipment and applying air pressure or hydraulic pressure to a to-be-detected pipe or pipe fitting through the first flow channel, and the air escape valve is opened through the second flow channel when the pipe or pipe fitting applies the hydraulic pressure to exhaust air and closed when the air pressure is applied. According to the utility model, air pressure and hydraulic pressure detection of pipes or pipe fittings can be realized, and the experiment efficiency is improved.

A pressure vessel arrangement includes a plurality of pressure vessels configured to store fuel, and a valve arrangement with at least one valve and a plurality of tank connectors. In the pressure vessel arrangement each pressure vessel of the plurality of pressure vessels is connected to one of the tank connectors. Further, in the pressure vessel arrangement the valve arrangement connects the tank connectors directly to one another and to the at least one valve, such that a fluid exchange which is not impaired at any time by way of a valve is brought about between the individual pressure vessels.

This invention provides a transcervical access system for moving fluids transcervically. [Solution] The transcervical access system 100 is effective in transferring a wide range of fluids into the uterine cavity, including the delivery of a hydrogel precursor, saline solution, and imaging fluid. The transcervical access system 100 is also effective in removing fluids, such as residual bodily fluids, residual fluids from procedures, or tissue from the uterine cavity. The transcervical access system 100 includes a flow limiter, such as an outflow limiter 106 and / or a cervical plug. A method of using the transcervical access system 100 involves using the transcervical access system 100 to transcervically access the uterine cavity and to install the hydrogel. The transcervical access system 100 and related methods are useful in preventing adhesions after intrauterine procedures by providing a biodegradable hydrogel within the uterine cavity, including the cervix.

A microchannel heat exchanger apparatus which is designed so that the fluid exchanges heat for reuse. Inside said heat exchanger apparatus, there is a heat exchanger, comprising a part that allow the fluid, which is selected from liquid or gas, to flow through by using a microchannel heat exchange plate, which has micron-scale small channels to increase contact surface area to achieve good heat transfer; and another part being a flat open-channel heat exchange plate to allow gas to flow in and out easily, wherein the two types of heat exchange plates are alternately positioned to achieve high-efficiency heat exchange.

The embodiment of the invention provides a control method of swimming pool cleaning equipment and the swimming pool cleaning equipment. Relates to the technical field of cleaning equipment control. The swimming pool cleaning equipment comprises a power assembly and a buoyancy adjusting assembly. The buoyancy adjusting assembly comprises a fluid exchange port. The control method comprises the steps that in response to a floating instruction, the power assembly is controlled to operate in a first working state so as to drive the swimming pool cleaning equipment in water to move towards the water surface; under the condition that the swimming pool cleaning equipment is not exposed out of the water surface, the buoyancy adjusting assembly is started, and the buoyancy adjusting assembly continuously operates until the swimming pool cleaning equipment floats on the water surface; when the swimming pool cleaning equipment is immersed in the water, the swimming pool cleaning equipment and the external water body are subjected to fluid exchange through the fluid exchange port; and after the fluid exchange port moves to be exposed out of the water surface, external air is introduced into the swimming pool cleaning equipment through the fluid exchange port. According to the method, rapid switching between the under-pool cleaning mode and the water surface cleaning mode is achieved, and the overall efficiency of cleaning operation is improved.

A cooking system positionable on a support surface includes a housing having an internal cooking compartment and an opening formed in the housing for accessing said internal cooking compartment. At least one heating element is provided for heating said internal cooking compartment. The heating element is operable to heat the internal cooking compartment while the opening is at least partially exposed to an ambient environment to allow fluid transfer between the ambient environment and the internal cooking compartment. An output from said at least one heating element is variable across said internal cooking compartment during operation of the system.

The application relates to the battery technical field and provides a control device, a thermal management system and energy storage equipment. The thermal management system comprises a control device, a refrigerant unit and a heat exchange unit. Heat exchange fluid in a heat exchange flow path can exchange heat with refrigerant in a refrigerant flow path. The control device comprises a box body, a control module and a heat exchange structure. The box body forms a placing cavity and an assembly opening. The assembly opening is communicated with the placing cavity. The control module is arranged in the placing cavity. The heat exchange structure seals the assembly opening. The heat exchange structure comprises a fluid channel. The fluid channel is communicated with the heat exchange flow path. The heat exchange flow path is used for heat exchange with a battery monomer. Heat exchange fluid in the heat exchange flow path can flow through the fluid channel, so that the heat exchange fluid exchanges heat with the control module, and the control module is cooled or heated. The heat exchange structure seals the assembly opening. The heat exchange structure can occupy as little space as possible in the placing cavity.

A hydraulic bearing, comprising: an inner core, a cage, an elastomer body extending between the inner core and the cage, and an outer sleeve which encloses the cage. The elastomer body has: first and second fluid chamber recesses filled with a working fluid, forming first and second fluid chambers that are fluidically connected to each other via a fluid channel such that fluid exchange takes place between the first and second fluid chambers via the fluid channel upon relative displacement of the inner core and the cage. The inner core has: first and second inner core stop projections, extending into the first fluid chamber and the second fluid chamber, respectively. The cage has first and second cage axial stop projections that cooperate with the first and second cage axial stop projections to limit the relative displacement of the inner core and the cage with respect to each.

The flow battery system includes a positively charged tank comprising a positively charged electrolyte, a negatively charged tank comprising a negatively charged electrolyte, a cell stack comprising a positive electrode and a negative electrode separated by a membrane operable to allow permeation of an ion between the positive electrode and the negative electrode, a plurality of flow tubes connecting these components, a power source operable to provide an electric current to said electrodes, a pump operable to pump electrolyte throughout the system, and a drainage tube and diverter that tie into the existing system and utilize the existing system's power source and pumps to pump electrolyte into and out of the system to allow for routine maintenance and repairs.

A brazed plate heat exchanger (100) comprising a plurality of first and second heat exchanger plates (110, 120), wherein the first heat exchanger plates (110) are formed with a first pattern of ridges and grooves, and the second heat exchanger plates (120) are formed with a second pattern of ridges and grooves providing contact points between at least some crossing ridges and grooves of neighbouring plates under formation of interplate flow channels for fluids to exchange heat, said interplate flow channels being in selective fluid communication through port openings. The first pattern of ridges and grooves is different from the second pattern of ridges and grooves, so that an interplate flow channel volume on one side of the first heat exchanger plates (110) is different from an interplate flow channel volume on the opposite side of the first heat exchanger plates (110), and at least some of the ridges and grooves of the first pattern extend in a first angle (β1) and at least some of the ridges and grooves of the second pattern extend in a second angle (β2) different from the first angle (β1).

The present disclosure provides systems, devices, and methods for electroporating at least one cell of a plurality of cells. A cartridge divided into a plurality of separation chambers is provided, wherein each chamber of the plurality of separation chambers is configured to contain a culture medium comprising the at least one cell. Each of the plurality of separation chambers is fluidly connected via a fluid exchange path and functionally separated by a constriction disposed within the fluid exchange path. Each of the plurality of separation chambers includes an electrode for applying a pulsed electric field to the at least one cell to effect electroporation of the cell and transfection of the cell with nucleic acid. The constrictions disposed between each chamber prevent electric field interference between adjacent chambers during an electroporation procedure.

A gate valve includes a valve body having a through-bore and a gate cavity, a gate disposed within the gate cavity, an annular seat pocket formed within the valve body, an annular seat disposed within the annular seat pocket, and a skirt disposed within the gate cavity and in contact with the annular seat and in contact with the surface of the gate. The skirt has an annular opening that is concentric with the annular seat and is sized and configured so that an outer edge of the annular seat abuts with an inner edge of the annular opening. The skirt may be suspended by the seat within the gate cavity. The skirt may reduce or prevent fluid exchange between a lubricant cavity formed within the valve body and an opening formed within the gate or with the through-bore.

An end plate member for a fuel cell system includes an end plate body and a heat exchange structure located in the end plate body. The end plate member is configured to be shared by a first stack assembly and a second stack assembly of a fuel cell system and to dispense a first reaction fluid and a coolant to at least a first stack of the first stack assembly and a second stack of the second stack assembly. The end plate member is further configured such that the first reaction fluid exchanges heat with a portion of the coolant before being dispensed to the first stack and the second stack. Comprising the end plate component can significantly reduce the number of components and pipelines of the fuel cell system, reduce the complexity of the fuel cell system, improve the integration level of the fuel cell system and reduce the occupied space.

Provided herein is an instrument delivery device for advancing an instrument into a vascular access device. The instrument delivery device includes an outer housing, a connector coupled to the outer housing and including a projection member that mates with the vascular access device, and an inner housing having a distal end positioned within the outer housing and engaged with a proximal end of the instrument. The inner housing moves relative to the outer housing so that a distal movement thereof moves the instrument from a first position to a second position, with a distal end of the instrument moving from within the outer housing to out beyond the distal end of the outer housing and the projection member. A fluid flow preventing seal provided in or adjacent the connector prevents a transfer of fluid between the vascular access device and the inner volume of the outer housing.

A fluid exchange electrode is defined by a multi-layered electrode body including a conductive electrode material layer disposed in an electrode body and an ionically conducting assembly that interfaces with the skin of a patient. A source of electrolytic fluid is coupled to an inflow tube and configured to permit a volume of electrolytic fluid to be circulated through the electrode body to increase treatment duration and overall electrode life in which the temperature of the cycled electrolytic fluid can be regulated. The cycled electrolytic fluid can be disposed of or preferably recirculated via a return or outflow tube to the source of electrolytic fluid. The herein described fluid exchange electrode can be used as part of a treatment system that applies a DC voltage in order to remove bacteria from a metal surgical implant.

Devices, systems, and methods for detecting properties of motion of at least one component of fluid exchange devices, such as, for example, a pressure exchange device or system.

The invention provides a compressor waste heat utilization system and method, and belongs to the technical field of oil field waste heat recycling, the system comprises a natural gas loop and a produced liquid loop, the natural gas loop comprises a compressor, the compressor comprises multiple stages of compression mechanisms arranged in a stacked mode, and the compressor pressurizes natural gas step by step through the multiple stages of compression mechanisms; the natural gas loop and the produced liquid loop share a plurality of heat exchangers, the heat exchangers in the natural gas loop correspond to the compression mechanisms, the heat exchangers are arranged at the rear ends of the compression mechanisms of the same stage, and natural gas and produced liquid conduct heat interaction through the heat exchangers. The method comprises the steps that the heat exchange process is subjected to analog calculation, step-by-step pressurization is conducted through the compressor, and multi-stage heat exchange is conducted through the heat exchanger. According to the system and the method, interstage compression waste heat utilization can be carried out on the compression mechanism, interstage heat and produced liquid are subjected to heat exchange, produced liquid heating is achieved, the waste heat utilization efficiency is improved, and meanwhile the energy consumption of a natural gas treatment system and the energy consumption of an oil and gas gathering and transportation treatment system are further reduced.

There is provided a heatsink for an immersion cooling system, the heatsink comprising: a plurality of fins for exchanging heat with a dielectric fluid flowing therebetween The spacing between adjacent fins of the plurality of fins is at least 1 mm, and each of the plurality of fins comprises one or more surface disruption features for resetting the thermal boundary layer between the dielectric fluid and the fin downstream of the surface disruption feature.

A fluid exchanger may exchange a fluid (e.g., coolant) in a reservoir (e.g., vehicle radiator) by removing or withdrawing a first fluid (e.g., old, spent, used, etc.) and by introducing a second fluid (e.g., new, clean, etc.). In some examples, the exchanger includes a valve construction that permits easy and safe transitioning from a first mode in which the fluid in the vehicle is run in a loop (e.g., after a cleaner is introduced) to a second mode in which the fluid is exchanged. In some examples, the exchanger includes a restrictor that stops fluid from flowing when the pressure fails to satisfy a threshold (e.g., where the pressure is below a threshold). In some examples, the exchanger includes a safety valve (e.g., ball valve) in the bottom of the new fluid tank, such that when the tank is empty, the valve will close and reduce the likelihood of unintentionally pushing air into the system (e.g., emptying the reservoir).

The utility model relates to the technical field of energy conversion, and discloses a thermal energy conversion and storage device based on photovoltaic power generation, which comprises a heat storage silo, a base, a filling port, a discharge port, a heat exchange water inlet, a heat exchange water outlet, a power line and a monitoring control computer, sand is used as a heat energy storage medium and is an environment-friendly energy storage solution, materials used by the sand are rich and environment-friendly, and the sand has high heat capacity, so that the sand can store a large amount of heat energy under the condition of no obvious temperature loss; when heat energy needs to be released and external fluid passes through the heat exchange U-shaped pipe, the fluid exchanges heat with the high-temperature sand, absorbs the heat energy of the sand and is heated, the sensors monitor the temperature of the fluid when the fluid enters, flows through and leaves, and the efficiency and safety of the heat energy transfer process are ensured.

The invention discloses a microorganism colonization membrane assembly for river regulation, and relates to the technical field of river regulation, the microorganism colonization membrane assembly comprises a mounting box with an opening at the upper end, two partition plates are fixedly mounted in the mounting box at intervals, and the two partition plates sequentially divide the mounting box into a microorganism enrichment area, a metabolism diffusion area and a fluid exchange area from front to back; the three regions are respectively filled with a microorganism colonization membrane, a fluid flow guide membrane and a honeycomb membrane, and the side wall of one side, far away from the partition plates, of the microorganism enrichment region and the two partition plates are respectively provided with water permeable holes through which water flows to pass; the surface of the microbial colonization membrane is provided with nano-scale villus-shaped secondary ripples. According to the microorganism colonization membrane assembly for river regulation, through cooperation of the biological anchor points and the chemotactic factor coating, the microorganism attachment efficiency (the survival rate is increased by 40% or above) and the impact load resistance are remarkably improved, and the problems that in traditional biological remediation, microorganism colonization is difficult, and activity is low are solved.

This application discloses a rodless pump-based surface power equipment for underground drainage and gas extraction, belonging to the technical field of underground drainage and gas extraction equipment. It includes: a conveying device for pumping power fluid; a drainage control valve, including a valve adjusting component and a valve body with a power fluid inlet, a power fluid outlet, a power fluid exchange port, and a power fluid return port. The power fluid inlet is connected to the conveying device, the power fluid outlet is connected to a pipeline injected into the formation, the power fluid exchange port is used to export a portion of the power fluid and allow it to return, and performs work on another portion of the power fluid exported through the power fluid outlet during the export process; the power fluid return port is used to return the power fluid to its source; and a driving device for actuating the valve adjusting component. When the driving device actuates the valve adjusting component, the valve adjusting component can connect the power fluid inlet to the power fluid outlet and the power fluid exchange port, or only connect the power fluid inlet to the power fluid exchange port, or connect the power fluid inlet to the power fluid outlet, the power fluid exchange port, and the power fluid return port.

Provided herein is a heat exchanger configured to heat or cool a liquid, vapor or other medium. The heat exchanger includes a coil of piping comprising a refrigerant from a chiller with the coil of piping defining a cylindrical space in a center portion of the coil of tubing. A return pipe receives the refrigerant from the coil of piping and returns to the chiller via a path through a central axis of the cylindrical space. An insert tube that has at least two connection points to the return pipe substantially fills the cylindrical space inside of the coil of piping and surrounding the return pipe. The coil of piping and the insert tube contact a fluid to be cooled or heated. The increased surface area for the heat exchanger provided by the insert tube causes additional heat to be exchanged with the fluid than a heat exchanger alone.

A female genitalia protective sheath apparatus is disclosed for providing a flexible, anatomically conforming, and hygienic barrier over external female genitalia. The apparatus includes a multilayer structure comprising a stimulus pad positioned between first and second protective layers, each supported by adhesive frames and removable covers to maintain sterility prior to use. The apparatus may further include an almond-shaped contoured frame, a semi-covered access region, a tear-away perimeter for controlled removal, and an optional magnetic coupling system for repeatable attachment. A handle facilitates positioning and removal while minimizing contact with the barrier surface. During use, the apparatus adheres securely to the skin, conforming to body movement while preventing fluid exchange and reducing the risk of pathogen transmission. The device provides an ergonomic, disposable, and female-oriented protective solution suitable for personal and clinical applications.

This application discloses an ultra-compact counter-flow microchannel cooler for Stirling engines, comprising a cooling shell and a cooling core. The cooling core includes multiple heat dissipation plates and multiple air guide plates. Both the heat dissipation plates and air guide plates are hollow tubular structures. The heat dissipation plates and air guide plates are alternately stacked in the radial direction. The heat dissipation plates have cooling channels in the axial direction, and the air guide plates have air guide channels in the axial direction. Hot fluid and cold fluid exchange heat in the multiple air guide plates and heat dissipation plates. This application solves the technical problem that traditional shell-and-tube coolers cannot be used for high-heat-load heat exchange within a confined annular space. Through the alternating stacking design of the air guide plates and heat dissipation plates in the heat exchange core, the heat exchange area per unit volume can be significantly increased, the compactness of the cooler structure can be improved, and the heat exchange power can be increased.

The invention relates to a shale gas well pressure control production stable production time prediction method and device, equipment and a medium. According to the method, a fluid exchange rule of a matrix-fracture system is accurately represented by constructing a dual-medium reservoir-fracture numerical model coupled with a multi-field effect, and reservoir pressure and flow velocity field distribution is dynamically generated based on numerical simulation of pressure control constraint. A pressure drop contour surface and a flow velocity threshold are utilized to identify a dynamic boundary of a discharge area and quantify a characteristic parameter sequence of the dynamic boundary, then a correlation function model of evolution characteristics and a stable production end point of the discharge area is established through nonlinear regression, and a weighted discriminant index is taken as a criterion to exceed a critical threshold to trigger early warning. And finally, precise prediction of the stable production period end point is realized in combination with linear extrapolation of the downward trend of the flowing bottomhole pressure, so that the limitation of traditional yield decline analysis is broken through, the stable production time prediction precision under the pressure control production condition is remarkably improved, and reliable early warning is provided.

This invention belongs to the field of water heaters, and specifically relates to a heat exchange and heating assembly and a water heater. It includes: a base for a sealed connection to the installation port of the water heater tank; a heat-concentrating chamber connected to the base, or the heat-concentrating chamber and the base are integrally formed; the heat-concentrating chamber is a hollow structure with at least one communication port for communication with the water tank; a heating element installed on the base or the heat-concentrating chamber, or the heating element and the base are integrally formed; the heating part of the heating element is located in the internal space of the heat-concentrating chamber; a heat exchanger including an inner heat exchange section disposed inside the heat-concentrating chamber and an outer heat exchange section disposed outside the heat-concentrating chamber, the outlet of the outer heat exchange section communicating with the inlet of the inner heat exchange section; the assembly has an inlet and an outlet for communication with a tap water pipe, the inlet communicating with or integrally formed with the inlet end of the heat exchanger, and the outlet communicating with or integrally formed with the outlet end of the heat exchanger; and a flow control mechanism for controlling the fluid exchange rate between the heat-concentrating chamber and the water tank.