102 results about "Fluid exchange" patented technology

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.

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 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 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.

A brazed plate heat exchanger (100) includes a plurality of first and second heat exchanger plates (110, 120) having different patterns of ridges and grooves providing contact points between neighbouring plates under formation of interplate flow channels for fluids to exchange heat, said interplate flow channels being in selective fluid communication with first, second, third and fourth large port openings (O1, O2, O3, O4) and first and second small port openings (SO1, SO2) forming a suction gas heat exchanger together with a dividing surface (DW). The ridges (R1, R2a, R2b) and grooves (G1, G2a, G2b) are formed such that the interplate flow channels between different plate pairs have different volumes. Disclosed is also a refrigeration system and method including such as heat exchanger.

A system (100) is disclosed, comprising a fluid exchange module (110) configured to be coupled to an extracorporeal circuit (105), circulating blood of a circulatory system of a patient, to transfer a fluid component between the blood and an exchange medium flowing through the fluid exchange module. The system further comprises a gas exchange device (120) configured to be coupled to the extracorporeal circuit to transfer a gas component between the blood and a reference sweep gas passing through the gas exchange device, a reference gas circuit (130) configured to be operated as a closed circuit recirculating the reference sweep gas through the gas exchange device, and a sensor unit (140) configured to be coupled to the reference gas circuit to generate sensor data indicating a concentration or partial pressure of the gas component in the recirculated reference sweep gas.

The application discloses a stratum fracturing effect evaluation method and system based on a walking micro-probe core capsule, and comprises the following steps: after the micro-probe core capsule is put into and recovered in a wellbore, time-depth conversion and filter derivation processing are performed on downhole temperature, pressure and time data to obtain temperature gradient profiles and pressure gradient profiles along well depth distribution; according to the temperature gradient profiles and the pressure gradient profiles, and in combination with a previously established wellbore annulus flow model and a temperature-pressure response model, temperature-pressure gradient response characteristics of each fracturing layer section are extracted, and a layer section response strength index is constructed; according to the layer section response strength index, the flow of each fracturing layer section into the wellbore annulus is inverted; and according to the inverted flow, the stratum fracturing effect is evaluated. The application can accurately identify the fluid exchange characteristics between different fracturing layer sections and the wellbore annulus by directly collecting temperature and pressure parameters near the fracture layer section through the walking micro-probe core capsule, and the precision and the fine level of the fracturing effect evaluation are improved.

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.

An injector apparatus comprises an elongate structure having one or more openings positionable near a penetrable barrier of an implantable device so as to receive fluid of the implantable device. The apparatus comprises a needle and a sheath extending over at least a portion of the needle. The elongate structure may comprise a distal tip to penetrate tissue and the penetrable barrier, and a distal opening near the tip to release therapeutic fluid into the implantable chamber. In many embodiments the distal tip, the distal opening, and the plurality of openings are separated from a stop that engages a tissue of the patient and limit penetration depth such that the distal opening and the plurality of openings are located along an axis of the implantable device to increase an efficiency of the exchange.

The invention relates to a non-return valve (10) for a H2 high-pressure system (100), in particular for a dispenser (110) of the H2 high-pressure system (100), wherein the non-return valve (10) comprises a main body (20) having an inlet interface (22) for connecting the non-return valve (10) with a refueling infrastructure (150) and an outlet interface (24) for connecting the non-return valve (10) with a high-pressure system (100), wherein the main body (20) comprises a flow channel (26) interconnecting the inlet interface (22) and the outlet interface (24) for fluid exchange, wherein a piston (30) is arranged in the main body (20) and movable between an open position and a closed position to open and close the flow channel (26) relative to a sealing seat (28) of the main body (20), wherein the flow channel (26) is arranged at least partially around the piston (30); a piston holder (32) with a piston spring (34), wherein the piston holder (32) and the piston spring (34) are arranged at least partially within the piston, wherein the piston spring (34) is configured for pressing the piston (30) into the closed position, wherein the piston holder (32) is fixed on the inside of the main body (20).

The utility model discloses a polishing device for mobile phone production, which belongs to the technical field of mobile phone production and comprises a supporting table, a side frame is arranged at one end of the top end of the supporting table, a polishing and grinding component is fixedly arranged in the middle of the top end of the side frame, a heat exchange frame is fixedly mounted in the middle of the top end of the supporting table, and a workbench is fixedly inserted into the top end of the heat exchange frame. When the polishing and grinding assembly processes mobile phone parts fixed to the top end of the workbench, the heat transfer plate transfers heat of the workbench in time and transfers the heat to the heat conduction columns through the heat exchange frame, the heat transfer plate and the heat conduction columns arranged at the bottom end of the workbench; the heat exchange fluid, the multiple transverse heat exchange rods and the multiple sets of longitudinal heat exchange rods exchange heat with the heat conduction column in time, so that heat generated when the workbench works is transferred into the heat exchange frame in time, the flowing heat exchange fluid exchanges heat in the heat exchange frame again and transfers the heat in time, and the workbench can stably work for a long time.

An ink cartridge support for fixing an ink cartridge when adding ink to the ink cartridge, the ink cartridge having a front wall and a rear wall opposed to each other in a third direction and a top wall and a bottom wall opposed to each other in a first direction, the ink cartridge being horizontally inserted into a cartridge mounting portion of a printing device in the third direction, the rear wall being located on a rear side of the front wall in the third direction; the bottom wall is provided with a gas-liquid exchange part for fluid exchange with the outside, in the third direction, the distance from the gas-liquid exchange part to the rear wall is smaller than the distance from the gas-liquid exchange part to the front wall, and the ink box is provided with a concave part at the junction of the top wall and the rear wall; the supporting piece is provided with a flat supporting face and a containing groove matched with the ink box, at least part of the concave portion is located in the containing groove, in the first direction, the rear wall coincides with the containing groove, and the first direction is parallel to the plumb bob direction. The ink box is stably supported through the supporting piece, a user does not need to manually align and centralize the ink box, and the ink box is convenient to use.

Systems and methods for cell culturing are disclosed herein. A fluidic exchange system for cell culturing comprises a cell culture cassette, comprising: a cell culture chamber having a cell culture and fluid media; and one or more pluggable ports fluidically connected to the cell culture chamber; a fluid media cassette, comprising: one or more liquid storage compartments; and one or more pluggable ports fluidically connected to the one or more liquid storage compartments; and a cassette coupler configured to fluidically couple the cell culture cassette and the fluid media cassette.