66 results about "Tube Capillary" patented technology

The invention relates to a preparation method of a novel open tubular capillary electrochromatographic column for fixing hydroxyapatite as a stationary phase by adopting a bio-ore physical-chemical method. The hydroxyapatite is used as an inorganic material, and is short of active groups, thereby being difficultly fixed on the wall of a capillary tube for capillary electrochromatographic separation. The preparation method comprises the steps of: introducing a pre-oxidized dopamine solution into a preprocessed capillary tube, forming a polydopamine coating on the inner wall of the capillary tube; and introducing a 1.5-time simulated body fluid into the capillary tube modified by polydopamine, placing the capillary tube in a water bath kettle being 37 DEG C for incubation for two weeks, and growing a hydroxyapatite crystal with a nano structure on the inner wall of the capillary tube. The preparation method provided by the invention is simple in process, easy to operate and low in cost; and the whole preparation process is carried out in a water solution without polluting the environment. A hydroxyapatite open tubular column prepared by adopting the preparation method has a good separation effect on a neutral compound, an alkali compound and an acidic compound.

The invention discloses an FBG (Fiber Bragg Grating) liquid level sensor and a preparation method thereof. The sensor comprises a metal base, pressure sensing membranes, two metal capillary tubes, optical fibers carved with two FBGs having different wavelengths, pins and a tail fiber sleeve, wherein the optical fibers penetrate into the two metal capillary tubes; an FBG is located in the first metal capillary tube; a sensing FBG is located between the two metal capillary tubes to form a structural unit; the pressure sensing membranes are fixed on the metal base, and an air cavity is formed between the pressure sensing membranes; the structural unit is located in the air cavity; the first metal capillary tube is located at the center of each pressure sensing membrane; the optical fibers are vertical to the plane where the pressure sensing membranes locate; the second tube capillary tube stretches out of the metal base and is positioned by the pins; and the tail fiber sleeve is fixed at the lower end of the metal base to be communicated with atmosphere. The metal capillary tubes are titanium tubes; and the metal base is made of stainless steel. The sensor can be applied to inflammable, explosive and strongly-corrosive liquid, and has the advantages of wide dynamic range, an FS with the precision of 0.5%, a linearity of 99.7%, electromagnetic interference resistance, easy reusability and the like.

The invention provides a three-way valve improved by utilizing an air-condition four-way valve, a hot-water air-conditioning system and an air conditioner. The problems of high cost of a plurality of solenoid valves, poor reversing performance and the like existing in the prior art can be solved. The technical scheme is that: the three-way valve comprises a solenoid coil, a pilot slide valve, a spring, a capillary tube c, a capillary tube d, a capillary tube e, a capillary tube s, a valve body, a piston cavity, a left piston, a right piston, a main slide valve, a C pipe, an E pipe and a D pipe, wherein the D pipe is a refrigerant inlet pipe; an outlet end of the capillary tube s is connected with an air suction pipe of an air condition compressor; and refrigerant outlet pipes only comprise the C pipe and the E pipe. The three-way valve improved by adopting the air-condition four-way valve is used for controlling the flow direction of refrigerating fluid, is switched on or switched off in a circulation of preparing heat water and non-preparing heat water, and replaces a plurality of solenoid valves in the prior art, so that the cost of the solenoid valves is reduced by at least 70 percent, the control is simplified, the leakage of the refrigerating fluid due to lax closure of the solenoid valves under high pressure difference is avoided, and the reliability in operation of an air-conditioning system is improved.

A capillary tube liquid transport device adapted to make nano-sized capillaries (5 μm to 180 μm) resilient. A first nano-capillary has a first sleeve about an inlet end that provides a resilient surface for installation of a fitting. The nano-capillary has a second sleeve about an outlet end that deforms to grip the outlet end of the capillary and hold it tightly against a transport tubing capillary. An outer sleeve is attached to the two end sleeves retaining them in a spaced relationship and providing support for the capillaries. The entire device is relatively rugged and easy to handle.

The invention discloses a method for preparing an open-tube electrophoretic column coated with nanometer titanium dioxide, as well as application thereof. In an etched capillary column, an open-tube capillary electrophoretic column coated with the nanometer titanium dioxide is prepared by a water (solvent) thermal method. The preparation method is characterized in simplicity, coatings insusceptible to fall off, and the like, and is suitable for the selective enrichment and separation of functionalized phosphorylated polypeptide and protein in complex biological samples. Titanium dioxide molecules are combined with silicon hydroxyl on the surface of the inner wall of a capillary through chemical bonds, and nanometer titanium dioxide particles are uniform in grain, complete in coatings and capable of effectively reducing the nonspecific adsorption effect to the protein and other macromolecule samples. The surface properties and micropore structures of the coatings can be conveniently controlled by changing the categories and proportion of middle pore-forming agents in hydrothermal mixtures, so as to obtain a phosphorylated polypeptide capillary column with adjustable pore diameter and specific surface area.

The invention provides a method and device for conducting absolute measurement on electrical conductivity of solution and a high-temperature melt. The method includes the steps that (1) capillary tubes are fixed in the solution or the high-temperature melt to be measured, electrodes are connected with an LCR tester, and one or two electrodes are fixed on an electrode clamp and inserted in the capillary tubes; (2) resistance R1 is measured by the LCR tester; (3) the electrodes are controlled to move along the preset distance l, and then resistance R2 is measured; (4) the inner diameter of each of the capillary tube is measured; (5) the constant of a conductance cell is calculated; (6) the difference value of the resistance at two measuring positions is calculated; (7) the electrical conductivity is calculated. The device is divided into a single capillary tube conductance cell device and a double capillary tube conductance cell device and comprises the two electrodes, the capillary tubes, a capillary tube clamping device, the LCR tester, the electrode clamp and a servo system. According to the method and device for conducting absolute measurement on electrical conductivity of the solution and the high-temperature melt, the polarization effect and the fringe effect can be effectively eliminated, and the high-precision measuring result of the electrical conductivity of the solution or the high-temperature melt is acquired.

The invention discloses an ultra-thin heat tube capillary structure and a preparation method thereof. The capillary structure comprises a base plate and copper micro-column arrays which are arranged on the base plate, wherein the surfaces of the copper micro-column arrays are provided with micrometer or/and nanometer holes. The preparation method comprises the following steps: depositing the micro-column arrays made of Cu-Al2O3 nano-composite materials on the surface of the base plate by adopting a photo-etching technology and an electrochemical deposition method; soaking the deposited micro-column arrays in an NaOH solution; dissolving Al2O3 nano-particles to obtain the copper micro-column arrays of which the surfaces are provided with the micrometer or/and nanometer holes. The preparation method disclosed by the invention is simple, and because the surface of the prepared capillary structure has a porous structure, boiling heat transfer of a heat tube can be effectively enhanced, andthe critical heat flux of the heat tube is improved, so that the heat transfer performance of the heat tube can be obviously improved.

The invention discloses a micro-fluidic chip mass spectrum system used for single cell analysis and an application method thereof. The system comprises a capillary tube a, a capillary tube b and a capillary tube c. The micro-fluidic chip is provided with two inlets and an outlet, one ends of the capillary tube a and the capillary tube b are connected with outlet ends of a micro-injection pump a and a micro-injection pump b, and the other ends are connected with an inlet I and an inlet II of the micro-fluidic chip. One end of the capillary tube c is connected with the outlet of the micro-fluidic chip, and the other end is connected with an inductively coupled plasma mass spectrometer through a commercial atomization system. An application method of the micro-fluidic chip mass spectrum system used for single cell analysis for single cell detection comprises the following steps of step 1, preparing for sample introduction; step2, orderly arranging cells; step3, forming a single cell bundle; step4, atomizing a single-cell liquid flow; step 5, carrying out quantitative analysis of single cells; and step 6, carying out repeated determination. The system and the method are not limited byspecific fluid conditions, and stable and efficient single-cell arrangement is formed at a wide flow rate range.

A plastic double-sleeve capillary heat-resistant curtain comprises double-sleeve inner tubes 1, outer tubes 2, composite headers 3, water balls 4 and a hose 5, and is characterized in that units of the plastic double-sleeve capillary heat-resistant curtain are connected into a group by the hose via connecting tubes of the inner tubes 1 and connecting tubes of outer tubes 2, the heat-resistant curtain formed by the units connected into the group is connected onto a heat source and a hot source, a capillary heat exchange surface which eliminates cold and hot loads caused by glass is formed between the inner sides of an outer window and a glass curtain wall, water in the outer tubes 2 flows downwards while water in the inner tubes 1 flows upwards, so that temperature difference of the low-temperature cold water in the outer tubes 2, peripheral hot air and a hot surface ( when in summer, but conversely when in winter) is highest, heat can be exchanged better, and circulation resistance of a system is reduced by the aid of double effects including a capillary effect and an effect of circulation pressure. Loads of the outer window and the glass curtain wall can be effectively eliminated by the technology. In addition, the plastic double-sleeve capillary heat-resistant curtain saves space, is flexible in installation, sufficiently utilizes renewable energy sources, and is high-efficient and energy-saving.

A capillary sampling array comprises a closely packed array of capillaries having any interstitial spaces therebetween filled with a material physically and mechanically compatible with the material from which the capillaries are formed and an outer jacketing material covering the closely packed array of capillaries.

An electronic smoking device, comprising a capillary buffer having a first end, a second end, a capillary buffer portion between the first end and a second end, and an vapor channel and a liquid conduit formed between first end and the second end and through the capillary buffer portion; the capillary buffer portion is operable to receive under capillary effect excessive liquid from the liquid supply.

The present invention provides a heat dissipation unit. The heat dissipation unit comprises a shell and a heat tube. The shell has a shell cavity which accommodates a working flow body. One inner wall of the shell cavity is provided with a shell capillary structure. The heat tube has an open end and a closed end. A heat tube cavity is between the open end and the closed end and is communicated with the shell cavity through the open end. The inner wall of the heat tube cavity is provided with a heat tube capillary structure that is connected with the shell capillary structure through the open end capillary of the heat tube.

The invention discloses a chip heat exchanger and a variable frequency air conditioner, and belongs to the field of chip heat dissipation. The chip heat exchanger comprises a heat pipe, a capillary pipe, an outdoor heat exchanger, an indoor heat exchanger and a compressor; and an evaporation section of the heat pipe is arranged below a chip of a computer board of the air conditioner, a branch pipeof the capillary pipe is wound around a condensation section of the heat pipe, a first end of a main pipe of the capillary pipe is connected with the indoor heat exchanger, a second end of the main pipe of the capillary pipe is connected with the outdoor heat exchanger, and the indoor heat exchanger and the outdoor heat exchanger are connected with the compressor. According to the scheme, the branch pipe of the capillary pipe absorbs heat dissipated by the heat pipe, the temperature of the chip is reduced, cooperative debugging of system working conditions is easier due to crotch-shaped branches instead of parallel channels, and the problems of user complaints caused by low and difficult refrigeration frequency rise, easiness in error reporting of control logics, insufficient refrigeration capacity, high operation power consumption and the like due to poor heat dissipation of the chip of the computer board of the variable frequency air conditioner in a high-temperature environment insummer are solved.

Capillary tube holder, a storage and shipping container in which a loaded capillary tube holder is securely held, a fixture for loading capillary tubes onto a capillary tube holder and a tube transfer fixture for transferring, removing or replacing individual capillary tubes from a loaded capillary tube holder.

The invention discloses a novel airlift pump structure which can be used in a millimeter-size hydraulic system for providing power. The volume is periodically increased and decreased through expansion and contraction of hot bubbles, so that the liquid suction and drainage functions are achieved. A pump mainly comprises condensation hoses, a capillary tube, artificial valves, a pulse signal generator, thin-film resistor heaters and liquid. The condensation hoses filled with condensate water are wound around the tube walls, adjacent to an inlet and an outlet, of the capillary tube, the liquid flows in the capillary tube, the thin-film resistor heaters are attached to the outer wall of the capillary tube, the pulse signal generator is connected with the thin-film resistor heaters, the artificial valves are installed in an inlet pipe and an outlet pipe of the pump, and therefore one-way flow is achieved. The novel airlift pump structure is designed emphatically and the work principle of the structure is explained in detail. The liquid flows in the designated direction through the pump when pulse signals are received and the pump is suitable for occasions without the continuous flow supply requirement.

The invention discloses an irrigation emitter based on a Tesla one-way valve principle and an irrigation system thereof, and belongs to the field of irrigation emitter manufacturing. The irrigation emitter based on the Tesla one-way valve principle comprises a water inlet pipeline, a water outlet pipeline and a flow channel device, wherein the flow channel device comprises a main flow pipeline located in the middle of the flow channel device and a plurality of flow channel units uniformly communicating in series and oppositely arranged on the upper side and the lower side of the main flow pipeline; each flow channel unit is sequentially provided with a plurality of barriers from bottom to top, and the barriers divide the flow channel units into capillary tubes and shunting capillary tubes; the capillary tubes communicate with the main flow pipeline and located on the peripheries of the barriers, each shunting capillary tube is located between the two adjacent barriers, and an inlet and an outlet of each shunting capillary tube communicate with the corresponding capillary tube. Water flow flows into the irrigation emitter based on the Tesla one-way valve principle to generate an inclined hedge and a vortex, so that the local head loss of the water flow is increased, the energy consumption of the water flow is further increased, the flow speed of the water flow is further reduced, and the irrigation uniformity is improved.

The invention belongs to the field of chromatographic analysis and particularly relates to a palm mono-fiber micro-tube, a capillary gas chromatographic column, and preparation and application thereof. In the invention, with palm fiber being a raw material, the palm mono-fiber micro-tube is produced through hydro-thermal synthesis; the palm mono-fiber micro-tube is uniform in particle size distribution, contains abundant functional groups, has large quantity of pores and has wrinkles on surface, and is 3-5 [mu]m in diameter and about 1 [mu]m in pore size. With tetraethyl orthosilicate being aprecursor, hydrogen-containing silicone oil being an end-capping agent, hydroxyl silicone oil being a crosslinker, trifluoroacetic acid being a catalyst and the palm mono-fiber micro-tube being a stationary phase, hydrolysis and a condensation chemical reaction are carried out to make the capillary gas chromatographic column, which has high column efficiency being better than that of a common commercial column, HP-5. The capillary gas chromatographic column can effectively separate a complex blend sample and isomers composed of compounds in different molecular structures with wide polarity. The product shows excellent selectivity and sensitivity in measurement on isomer impurity purities in a practical sample.

The invention relates to the field of buildings, and provides a composite board with capillary tubes and a forming method of the composite board. The composite board is simple in structure, high in heat efficiency, energy-saving and environment-friendly, and solves the technical problem that a heating system is complex in structure, non-uniform in heating space temperature, low in heat efficiency,high in energy and the like in the prior art. The composite board comprises an insulation board flatly laid and fixed on a ceiling, wherein a honeycomb metal board is flatly laid and fixed outside the insulation board, the plurality of capillary tubes are clamped between the honeycomb metal board and the insulation board, and the two ends of each capillary tube are connected to a temperature-regulating water supply source through a water supply pipe and a water return pipe.

The invention provides a special spray head structure applied to nanofiber melt-blowing preparation. The special spray head structure comprises a storage barrel, a discharge pipe, a capillary tube, aheating block, a vent pipe, first base bodies, airflow inlet pipes, flow guide pipes and second base bodies, wherein the discharge pipe is arranged at the bottom end of the storage barrel; the capillary tube is arranged at the bottom end of the discharge pipe; the heating block is arranged at the bottom end of the storage barrel; the vent pipe is arranged on the outer side of the capillary tube; the first base bodies are arranged on two sides of the outer wall of the vent pipe; the airflow inlet pipes are arranged on two sides of the first base bodies; the flow guide pipes are obliquely arranged on one sides of the bottom ends of the airflow inlet pipes; and the top surfaces of the second base bodies are assembled on the bottom surfaces of the first base bodies and are fixedly arranged. According to the special spray head structure disclosed by the invention, fibers are pulled twice, and the fibers are high in uniformity and high in quality; and moreover, the fiber bundle breakage phenomenon is effectively avoided in the pulling process, and the production stability of the device is high.