71 results about "Fluid need" patented technology

A method of refilling a supply of printing fluid in a printing unit, comprising the steps of: removably mounting a dispenser of printing fluid to the printing unit so as to align an outlet of the dispenser with an inlet of a printing fluid storage chamber of the printing unit; determining an amount of printing fluid needed to substantially refill the printing fluid storage chamber; and selectively dispensing an amount of printing fluid from the dispenser corresponding to the determined amount.

The invention provides a fluid simulating method and device. The method includes the steps that firstly, a mixed flow model is constructed; secondly, smoothed particle hydrodynamics (SPH) particles are constructed; thirdly, relevant information of fluid needed by the mixed flow model is processed in the mixed flow model through an SPH method; fourthly, information needed in fluid simulating is output according to a processing result in the mixed flow model. According to the fluid simulating method and device, the moving process of multi-component fluid can be widely and accurately simulated.

In various aspects, the present invention provides an electric tankless liquid heater system capable of delivering liquid, such as, for example, water, with an acceptable increase in output liquid temperature upon a sudden and substantial decrease in liquid demand. In various aspects, the electric tankless liquid heater comprises an inlet manifold and a plurality of liquid heaters the inlets of which are connected in a parallel flow relationship by the inlet manifold, and the outlets of which are each connected to a separate outlet conduit, and which is configured to provide water to a plurality of automatic water fixtures with a less than about 2° F. (about 1.1° C.) increase in output water temperature upon about a one-and-a-half-fold or greater decrease in water demand that occurs in less than about 500 milliseconds as measured by the increase time of the inlet liquid pressure.

Novel tools and techniques for assessing, predicting and/or estimating effectiveness of hydration of a patient and/or an amount of fluid needed for effective hydration of the patient, in some cases, noninvasively.

This invention discloses a composite and nanometer-grade silk fibre, which is non-woven fabric composed of nanometer-grade silk element and nylon 6 composite fiber. The diameter of composite fiber is 50-300 nanometers, the weight ratio of nanometer-grade silk element and nylon 6 is in the range of 9:1-1:9. Its method for preparation is following: first preparing spinning fluid, obtaining non-woven fabric with electrostatic spinning method, then doing final treatment. Wherein said preparation of spinning fluid comprises the following steps: (1) preparing silk fibre solution and drying it into flim; liquefying the silk element flim into formic acid to get actified silk fibre solution; (2) liquefying nylon 6 section into into formic acid; (3) mixing equably the solution obtained from (1) and (2) to get spinning fluid needed. The invention improves the microstructure of fibre with composite method and final treatment, and the product obtained, with good dimensional stability which satisy the demand of performance and morphological stability of product in application, can be used as biological and medical material, protective material and filtering material and so on.

The invention discloses a fluid slip ring, relates to the technical field of slip rings and aims at solving the problem that in the prior art, in the severe sea condition, a high-temperature and high-pressure large-caliber fluid slip ring is poor in running reliability. The temperature of conveyed fluid of an inner runner of the fluid slip ring is 200 DEG C, the pressure is 11 Mpa, and the drift diameter is 250 mm; and the temperature of fluid of an outer runner is 70 DEG C, the pressure is 11 Mpa, and the drift diameter is 408 mm. The fluid slip ring receives fresh water conveyed by a user, and the fresh air is heated to 200 DEG C through an oversea nuclear power platform and conveyed to the user. The existing fluid conveying slip ring cannot reach the high-temperature and high-pressure conveying capability. According to the fluid slip ring, a coaxial inserting type structure is adopted according to the large-flow high-temperature and high-pressure fluid needed by the user, the multi-runner high-temperature and high-pressure rotation sealing is achieved, and the requirement for preventing washout of gas-phase media and liquid-phase media is met; and it is guaranteed that in the severe sea condition, the fluid slip ring runs safely and reliably. The temperature, pressure and flow parameter level of fluid conveying media can be improved to a new level.

The invention concerns a continuously variable cone disc transmission with sets of discs mounted on drive and driven shafts. The sets of discs are each hydraulically adjustable axially in their distance from each other whereby the traction train circulating between them is able to adjust to different running circles and thereby enabling a continuously variable transmission. The pressure fluid needed for the hydraulic actuation is supplied to the pressure cylinders by a pump through a control valve. This control valve is actuated hydraulically by a pressure supply that is need-adjusted by a proportional-pressure reduction valve. In the event of a functional failure and consequent loss of the regulating pressure, the control valve is automatically arrested in position, so that the control valve is prevented from giving a command for the sudden change of the transmission ratio into an extreme position.

The invention aims to provide a device for distilling and separating water evaporated/boiled under negative pressure. The device has low heating temperature, high efficiency and low cost. The invention provides a scheme, which ensures that the needed negative pressure can be produced in the sea water desalinization systems without vacuum pumps, thus reducing the boiling temperature of the water solution to 30-50 DEG C. The water solution can be boiled as long as the temperature of the heating source is higher than 30-50 DEG C. The heating source for heating and evaporating the water solution in the invention can be water from solar heat collectors, tail water with higher temperature from the power plants, chemical plants, smelting plants and the like or water completing heat exchange with the residual heat from the power plants, chemical plants and smelting plants. The temperature of the heating fluid needed by the invention can be lower than 60 DEG C, preferably 37 DEG C, thus effectively utilizing the solar energy or largely recovering and utilizing the industrial residual heat and having great value in environmental protection and energy saving.

The invention aims to provide a device for distilling and separating water evaporated/boiled under negative pressure. The device has low heating temperature, high efficiency and low cost. The invention provides a scheme, which ensures that the needed negative pressure can be produced in the sea water desalinization systems without vacuum pumps, thus reducing the boiling temperature of the water solution to 30-50 DEG C. The water solution can be boiled as long as the temperature of the heating source is higher than 30-50 DEG C. The heating source for heating and evaporating the water solution in the invention can be water from solar heat collectors, tail water with higher temperature from the power plants, chemical plants, smelting plants and the like or water completing heat exchange with the residual heat from the power plants, chemical plants and smelting plants. The temperature of the heating fluid needed by the invention can be lower than 60 DEG C, preferably 37 DEG C, thus effectively utilizing the solar energy or largely recovering and utilizing the industrial residual heat and having great value in environmental protection and energy saving.

The invention discloses a magnetic fluid sealing device for a gasholder. The magnetic fluid sealing device is installed between a piston of the gasholder and the inner wall of a holder body, and comprises an upper pole shoe, a lower pole shoe, a permanent magnet, pole teeth and a magnetic fluid, wherein the upper pole shoe and the lower pole shoe are of an annular structure respectively, and located on the upper part and the lower part of a disc edge of the piston respectively, and the upper pole shoe and the lower pole shoe are both magnetic conductors; the permanent magnet is clamped between the upper pole shoe and the lower pole shoe, is of an annular structure, and is out of touch with the piston; the plurality of pole teeth are provided, and arranged on the end parts of the upper pole shoe and the lower pole shoe, a certain gap is kept between the end part of each pole tooth and the inner wall of the holder body, and the magnetic fluid is injected in each gap; the holder body is made of a metal magnetic conductor material, the piston is made of a non-metal non-magnetic conductive material, and the magnetic fluid is a magnetic liquid. The sealing device disclosed by the invention is bidirectional, applicable to gas holders with various capacities, simple in structure, high in stability, and convenient to maintain because only the magnetic fluid needs to be regularly supplemented; and with the adoption of the sealing device, the invalid capacity of the gas holder is small, and the construction cost is greatly reduced.

A medical luer connection improves liquid mixing thereby reducing areas of low or stagnant flow within the plenum chamber formed between the male and female luer connectors. Stagnation or low flow areas in the plenum can be reduced by imparting a non-axial flow component to the fluid flow as it passes through the plenum. Improvement of the cleaning effectiveness of the luer connection reduces the amount of flushing fluid needed to clean the connection, reduces the residual blood matter at a fixed volume of fluid relative to a standard luer connection, or combinations of the above.

A UV sterilizer for fluid of large flow rate comprises at least one U V sterilization module and an mounting part for said module, each module comprising at least one UV lamp tube, said mounting part comprising a body in the form of a duct for the passage of fluid to be sterilized therethrough, with a number of mounting apertures for the UV sterilization module being provided on the wall of the duct, and on one or both end surfaces of the duct there being provided a baffle extending from the outer peripheral of said one or both end surfaces towards the center thereof, with a port being left on said one or both end surfaces with the baffle for the passage of fluid to be sterilized therethrough. The UV sterilizer for fluid of large flow rate of the present invention may be widely used in water supply plant, pharmaceutical plant, food plant, drink plant, or other plants or sites where fluid need to be sterilized.

The invention relates to a pressure reducing device with a temperature recovery function. The pressure reducing device is applied to occasions where high-pressure compressible fluid needs to be converted into low-pressure fluid through throttling, and obvious temperature reduction is not allowed to occur, and belongs to the field of energy conservation and utilization. The pressure reducing device comprises an intake flange (1), an intake straight section (2), a laval nozzle taper section (3), a laval nozzle divergent section (4), a straight section (5), a diffusion section (6), a discharge straight section (7) and a discharge flange (8) which are connected continuously. The device has very broad pressure reduction range, has a compact structure and no moving parts, and is not easy to crack or leak.

The invention relates to a fluid pressure stabilizing valve. The fluid pressure stabilizing valve comprises a valve body, a valve cover and a spring, wherein the valve body is composed of a valve seat, a valve element and stiffeners; the stiffeners connect the valve seat and the valve element; the valve seat is a hollow cylinder; through holes are formed in the solid part of the hollow cylinder in the axial direction; the valve element is composed of a spring seat and a locating needle; the stiffeners connect the bottom end of the spring seat and the bottom end of the valve seat; the valve cover is composed of a cover body and a locating column which is located in the middle of one side of the cover body and perpendicular to the cover body; the locating column is a hollow column; the inner diameter of the hollow part of the hollow column is greater than the outer diameter of the locating needle; guide protrusions are evenly distributed on the periphery of the cover body; one end of the spring is installed on the spring seat; the other end of the spring is installed on the locating column in a sleeved mode; the locating needle is inserted into the locating column. The fluid pressure stabilizing valve is ingenious in structure, reliable to operate and constant in water pressure output, and can be used on the various different occasions where pressure of fluid needs to be limited and stabilized, effectively prevent fluid pipelines from being cracked by over large pressure and also meet the requirement for pressure limiting and stabilizing in the conveying process of certain fluid.

The invention provides a cleaning brush with cleaning fluid inside. The cleaning brush with cleaning fluid inside comprises a storage tube, a handle, a brush head and an elastic part. The lower end of the handle is detachably connected with the upper end of the storage tube, the brush head is detachably connected with the lower end of the storage tube, the storage tube is provided with an air inlet hole, a sealing unit is arranged on the air inlet hole, and the elastic part is arranged between the brush head and the storage tube. Cleaning fluid is filled in the storage tube, flows into a hollow pipe in the brush head by extruding the elastic handle and moving the elastic part downwards under air pressure and flows to bristles from a cleaning fluid outlet on the hollow pipe. The cleaning brush with cleaning fluid is simple in structure and convenient to use, and solves the problem that cleaning fluid needs to pour to the cleaning brush multiple times during use of common cleaning brushes.

The invention discloses a method for cleaning reactants and a sample analyzer. According to the method for cleaning the reactants, a mixing chamber and a measuring chamber which controllably communicate with each other are provided, when the measuring chamber and the mixing chamber are cleaned, a replacement type cleaning mode is adopted, so that a sample in the measuring chamber is replaced by a cleaning liquid firstly, and then the cleaning fluid in the measuring chamber is replaced by a diluent, so that cleaning is completed, the mixing chamber also has the similar condition, wherein a sample in the mixing chamber is replaced by the cleaning liquid firstly, and then the cleaning fluid in the mixing chamber is replaced by the diluent, so that cleaning is completed, therefore, the problem that the dilution concentration of the cleaning fluid needs to be accurately controlled so as to prevent the influence caused by the dilution concentration on the cleaning result is solved, accordingly, in the whole cleaning process of the method, the process of diluting the cleaning liquid is also avoided, so that the whole measuring period is directly shortened, and the measuring speed is increased.

A lid, having an opening area encased by one of the variety of shaped sidewalls with a flexible ribbed portion extending downwardly to one of the variety of shaped bases (e.g., a domed shaped base), is provided for completely purging of atmospheric gases out of a container upon installation so as to eliminate head space by forming an airtight barrier with the container and the lid. A lid rim, having an inside portion connected to the top of the one of the variety of shaped with the flexible ribbed portion and an outside portion is provided for sealing the lid to the container. The dome shaped base is connected to the bottom of the one of the variety of shaped sidewalls forming a circular base of the lid. The one of the variety of shaped sidewalls is provided for manipulating the lid from a relaxed state to an elongated state while being submerged into a liquid to displace an amount of fluid needed to raise the fluid level.

The invention provides a temperature control device, method and system and relates to the technical field of temperature control. The device is arranged on the outer side of a pipeline in a winding manner through a heating assembly. The portion between the heating assembly and the pipeline is filled with a phase change heat storage material. A first temperature sensor is arranged on the inner wallof the pipeline and used for measuring the temperature of fluid in the pipeline. A second temperature sensor is arranged on the outer wall of the heating assembly and used for measuring the outside environment temperature of fluid outside the pipeline. A control circuit is electrically connected with the heating assembly, a heat dissipating assembly, the first temperature sensor and the second temperature sensor. After the fluid needing temperature control enters the pipeline, when temperature rising or temperature lowering is needed, according to the set temperature and the fluid temperaturemeasured by the first temperature sensor, the control circuit can drive the heating assembly or the heat dissipating assembly to work, and by means of the assisting function of the second temperaturesensor and the phase change heat storage material, in the fluid temperature control process, the phenomenon that the actual temperature surpasses the set temperature can be avoided.

The invention relates to a temperature adjusting device and a water heater. The temperature adjusting device comprises a refrigerant loop, a medium loop and a third heater exchanger (8); the refrigerant loop comprises a compressor (1), a condenser (2) and an evaporator (4); the medium loop comprises a first heat exchanger (5) used for exchanging heat with the condenser (2) or the evaporator (4), an energy accumulator (9) communicating with an outlet of the first heat exchanger (5) and a second heat exchanger (7) communicating with an outlet of the energy accumulator (9); and the third heater exchanger (8) is configured to be capable of exchanging heat with the second heat exchanger (7) and used for allowing a fluid needing to be heated or cooled to circulate. By applying the technical scheme, the heat absorbing process and the heat releasing process of the energy accumulator both can be completed in the mode of exchanging heat with a medium in the medium loop, and therefore the problemthat in the prior art, heater exchangers in a heat accumulator can not fully exchange heat with a heat accumulation portion, and the water use safety problem caused by refrigerating agent leaking andheat accumulation material corrosion leaking are solved.

The invention relates to the field of corrosion-resistant steel rail production, in particular to a production method of corrosion-resistant steel rails with excellent corrosion resistance. The production method comprises the step that after the steel rails are cooled and straightened, the steel rails are placed in a groove containing a trivalent chromium passivation solution for corrosion-resistant material attachment, wherein the adhesion time of a corrosion-resistant material ranges from 1 min to 10 min. After the steel rails are cooled and straightened, the steel rails are placed in the groove containing the trivalent chromium passivation solution to adhere the corrosion-resistant material, so that the corrosion resistant material is adhered to the surface layer of the rail bottom of each steel rail, and good corrosion resistance is achieved. Due to the fact that the real trivalent chromium passivation solution is adopted for treatment, the obtained corrosion resistance is excellent. The production method is particularly suitable for railway transportation occasions in which an anti-freezing fluid needs to be sprayed.

The invention discloses an operation method realized by an automatic grouting and circulating drilling fluid system, including the grouting operation process in the casing operation and the circulating drilling fluid operation process in the casing operation. When the drilling fluid needs to be poured after the buckling is completed, the mud pump is turned on, and the high-pressure drilling fluid enters the automatic grouting device through the high-pressure hose to realize the drilling fluid injection into the casing to balance the annular pressure inside and outside the casing; When stuck, insert the automatic grouting device into the casing, and when the drilling fluid pipe is full, the drilling fluid goes up to expand the sealing cup, closing the casing and the automatic grouting device, and completing the drilling fluid circulation operation.

The invention discloses a coating nozzle cleaning device which comprises a roller, a main cleaning device and an auxiliary cleaning device. The area occupied by one part of the roller is a coating area; the roller can self-rotate; the main cleaning device is arranged outside the coating area and is provided with a main liquid holding cavity; one part of the roller is placed in the main liquid holding cavity; the auxiliary cleaning device is arranged outside the coating area and is internally provided with an auxiliary liquid holding cavity; one part of the roller is arranged in the auxiliary liquid holding cavity; the part, passing through the coating area, of the roller during self-rotating can pass through the main liquid holding cavity and the auxiliary liquid holding cavity along withthe self-rotation of the roller; and at the time, only a photoresistor cleaning fluid needs to be injected into the main liquid holding cavity so as to clean the a photoresistor, and only pure water needs to be injected into the auxiliary liquid holding cavity so as to clean a mixture of the photoresistor and the photoresistor cleaning fluid, so that the problem that the mixture of the photoresistor and the cleaning fluid cannot be effectively cleaned in the prior art can be solved.