35results about How to "Even fluid distribution" patented technology

The present invention is a PSA system having at least one vessel that uses a multi-segmented flow distributor to provide a uniform fluid across the adsorbent bed in the vessel.

The present invention relates to catheters to deliver a fluid to a patient. A catheter of the invention comprises a plurality of slits through which the fluid is delivered to the patent. A catheter of the invention is designed in a simple manner to lower costs and provide a reliable means to deliver fluids to a patient. The invention further comprises methods for making a catheter of the invention and methods of delivering a fluid to a patient with a catheter of the invention.

The invention relates to a thermal expansion valve which comprises a valve body. The valve body comprises an inlet port, a valve chamber, a valve hole, an outlet port and a reflux channel, wherein the inlet port is used for importing a high pressure refrigerant; the valve chamber is communicated with the inlet port; the valve hole is arranged in the valve chamber; the outlet port is used for exporting out the refrigerant expanded due to opening and closing of the valve hole; the reflux channel is used for the refrigerant which flows through an evaporator and is returned towards a compressor; a valve rod is arranged in the valve body in a sliding mode and passes through the reflux channel and the valve hole, one end of the valve rod is connected a valve element and the other end of the valve rod is pushed by a thermal element so as to control the opening of the valve hole; the valve hole is a horn hole and comprises a section of cylindrical hole and at least two adjacent cone holes which are provided with gradually enlarging openings and are connected with one end of the cylindrical hole; and when the valve element is in contact with the side walls of the cone holes, the valve hole is closed. Compared with the thermal expansion valve in the prior art, the thermal expansion valve disclosed by the invention has the advantage that the matching problem of a low-superheat-degree air conditioning system under the high-load and low-load working conditions is solved.

The present invention is a PSA system having at least one vessel that uses a multi-segmented flow distributor to provide a uniform fluid across the adsorbent bed in the vessel.

The invention concerns a fluid distribution device (1) comprising:at least one inlet tube (2) comprising openings (7) and having a first and a second end (3, 4);a cap (5) comprising a principal body (6) with a lenticular shape and with a circular section elongated by a skirt (8) extending in the direction of the second end (4) towards the first end (3) of the inlet tube (2), said cap (5) having an outer surface and an inner surface, the cap being integral with the second end (4) of the tube via the inner surface and the principal body (6) being provided with a plurality of holes (10);and in which the cap (5) comprises at least one deflection means (14) disposed on its outer surface and configured to direct or maintain the gas towards or at the periphery of said cap (5).

The invention relates to a vein-like fuel cell flow field structure, wherein the gas flow field structure is a vein-like flow field and comprises a reaction gas inlet, a reaction gas outlet and a gas flow channel, the reaction gas inlet is arranged on the petiole position of the vein, and the reaction gas outlet is arranged on the leaf apex position of the vein. According to the present invention, the vein structure is introduced into the flow field design, such that the characteristics of low fluid flow resistance and uniform flow field distribution in the vein are applied in the flow field design so as to improve the battery performance.

The invention discloses a reverse flow type plate heat exchanger with diversion plates welded in the technical field of petrochemical industry heat exchangers. The reverse flow type plate heat exchanger comprises heat transfer plates, sealing gaskets, a fixed pressing plate, a movable pressing plate, pressing bolts and nuts, an upper guide rod and a lower guide rod. The reverse flow type plate heat exchanger with the diversion plates welded is characterized in that the diversion area of the heat transfer plates is a flat plate, a diversion plate set is welded in the diversion area of the heattransfer plates, and the shape of the diversion plate set is the same with that of the diversion area of the heat transfer plates. By the adoption of the reverse flow type plate heat exchanger with the diversion plates welded, the diversion area of the heat transfer plates is the flat plate, concave or convex blocks are not pressed, and the diversion plates are welded in the diversion area of theplates. The reverse flow type plate heat exchanger has the beneficial effects that the diversion effect of the diversion plates at the inlet is good, fluid distribution is uniform, a heat exchange dead area of the plate heat exchanger can be effectively reduced, and the heat exchange efficiency is improved; and the thickness of the diversion plates is small, the occupied circulation area is small,and the pressure of the diversion area at the inlet is low.

This invention discloses a new type of flow field uniform diffuser. Apart from the new design to the diameter of the tube, it utilizes the turbulent flow diffusion theory of the flow field to build up an idea of setting a first and a second uniform flow boards with rectangular holes in the diffusion tube on the basis of the current inlet, outlet and diffusion tubes which has the advantages of short uniform flow length, uniform flows and small occupied space.

The invention discloses a polishing pad, a preparation method and application thereof. The polishing pad has a combination sheet and a backing, the combination sheet is fixed on the backing, the combination sheet together forms a polishing layer, and the polishing layer has a central polishing area, one or more intermediate polishing areas arranged in turn around the central polishing area, and surrounding middle polishing areas. The outer edge polishing area is set in the polishing area, and the central polishing area is circular, the middle polishing area is annular, and the outer edge polishing area is annular; an annular gap is formed between two adjacent polishing areas, and the annular gap is used to receive Polishing fluid in the polishing process; the Shore hardness of the polishing layer decreases successively along the direction from the center polishing area to the outer edge polishing area; the Shore hardness gradient of two adjacent polishing areas is 0.5‑5D. The hardness of the polishing pad decreases gradually along the diameter direction, and its wear rate remains basically consistent during the mechanical polishing process, so the surface of the wafer to be polished can be flattened, and the flattening efficiency is high.

The invention relates to a quenching tower and its process system for the separation of Fischer-Tropsch synthesis products, comprising a quenching tower body, a main feed system, an auxiliary feed system, heat exchange elements, a spray washing system and a tray system, The upper part of the quench tower body is a gas phase area, and the lower part is a liquid phase area, the main feeding system is arranged in the gas phase area, and the spray washing system and the tray system are sequentially arranged above the main feeding system , the auxiliary feed system and the heat exchange element are arranged in the liquid phase region. Compared with the prior art, in the present invention, the gas phase product of the Fischer-Tropsch synthesis reactor is washed, cooled and distilled multiple times in the quenching tower, so as to realize the effective separation of Fischer-Tropsch synthesis light oil and heavy oil, and the quenching tower The design structure and layout are reasonable, and it has the characteristics of high product separation efficiency, large operating flexibility, simple process system, low system resistance, high heat recovery efficiency, etc., and is more suitable for the operation of large-scale Fischer-Tropsch synthesis process systems.

The invention provides a flat plate micro-loop heat pipe, which includes a main board and an upper cover plate, the upper cover plate and the main board are packaged together, the main board includes an evaporation chamber and a condensation chamber, and steam is connected between the evaporation chamber and the condensation chamber pipeline and liquid pipeline, the evaporation chamber communicates with the liquid pipeline through a capillary force channel; a porous medium sheet is arranged in the evaporation chamber, and the capillary force of the porous medium sheet is along the direction of the liquid pipeline to the steam pipeline, along the direction of the capillary force of the porous medium capillary wick direction, the capillary force of the porous media sheet at different positions is gradually enhanced. In the present invention, the capillary force of the capillary wick at different positions of the porous medium sheet is gradually enhanced, so that the upper part can quickly absorb the liquid and increase the amount of the upper fluid, so that it enters the upper steam pipe after the upper part evaporates, thereby To achieve the purpose of uniform fluid distribution and uniform temperature distribution.

The invention discloses an electromagnetic slurry magnetic separator. The electromagnetic slurry magnetic separator comprises a magnetic separation device, a splitting device, a converging device anda cooling device. The magnetic separation device comprises a coil arranged in a wire box, and an upper magnetic pole, a magnetic medium device and a lower magnetic pole communicated with one another to form a magnetic separation cavity are arranged in an air gap in the middle of the coil; the splitting device is arranged above the upper magnetic pole and comprises a multi-pipeline splitting interface, a splitter and a water separator; the multi-pipeline splitting interface comprises a plurality of splitting pipes communicated with the splitter and the magnetic separation cavity and a pluralityof water dividing pipes communicated with the water separator and the magnetic separation cavity; the converging device is arranged below the lower magnetic pole, is substantially as same as the splitting device in structure, and the two are symmetrical; and the cooling device adopts a forced oil circular cooling mode. According to the electromagnetic slurry magnetic separator, a pipeline channelwhere slurry and flushing water are separated, a flow is distributed uniformly, the concentrate grade and purity are high, and waste of the slurry is small; the cooling effect of the coil is good, the diameter of the coil is great, the exciting power is small, the ton energy consumption is low, the output is high and the occupied area is small.