40results about How to "Improve flow distribution" patented technology

Bleed structure (17) for a bleed passage in a gas turbine engine. The structure includes a first wall portion (18) defining a first side of an opening for the passage and a second wall portion (19) defining a second side opposite the first side of the opening. The first and second wall portions (18, 19) end at different positions in an extension direction of the opening.

The invention relates to a cross-counterflow heat exchanger, such as a cross-counterflow radiator for a motor vehicle, having an improved inlet / outlet tank wherein the inlet and outlet chambers are laterally off-set allowing the inlet and outlet ports to be oriented in the same general direction toward the fluid source; more particularly, the inlet and outlet chambers are tapered thereby providing improved flow distribution and pressure drop for fluid flow; still more particularly, the return tank inlet and outlet chambers are contra-tapered allowing the inlet and outlet ports to be substantially aligned resulting in a laterally compact heat exchanger.

A method for facilitating the distribution of the flow of one or more streams within a bed vessel is provided. Disposed within the bed vessel are internal materials and structures including multiple operating zones. One type of operating zone can be a processing zone composed of one or more beds of solid processing material. Another type of operating zone can be a treating zone. Treating zones can facilitate the distribution of the one or more streams fed to processing zones. The distribution can facilitate contact between the feed streams and the processing materials contained in the processing zones.

Sorbent cartridge systems useful in regenerating or purifying dialysis solutions are described as well as methods to regenerate or purify spent dialysis solutions. Dialysis systems using the sorbent cartridge system of the present invention are further described.

The invention relates to a tire vulcanization inner mould, and belongs to the field of tire production equipment. The tire vulcanization inner mould is characterized in that a piston rod and a base are fixedly connected, a wedge-shaped surface of the base is alternately provided with a narrow tile side guide rail and a wide tile side guide rail, and the narrow tile side guide rail is matched with a narrow tile side sliding block fixed on a narrow drum tile support; the wide tile side guide rail is matched with a wide tile side sliding block fixed on a narrow drum tile support, a limiting disc is sheathed on the piston rod, the circumference of the upper side surface of the limiting disc is alternately provided with a narrow tile bottom sliding block and a wide tile bottom sliding block, and the narrow tile bottom sliding block and the wide tile bottom sliding block are respectively matched with a narrow tile bottom guide rail and a wide tile bottom guide rail fixed on the narrow drum tile support and the wide drum tile support. The tire vulcanization inner mould provided by the invention has the advantages that a mechanical mechanism is adopted to realize the radial dilatation of the mould, the structure precision is high, problems of the existing vulcanization technology that the expansion of a capsule is not thorough and the structure is asymmetric are fundamentally solved, the vulcanization pressure is greatly improved, vulcanized manufacture of the tire can be preformed for a long time, and the problems in the original technology that the service life of the capsule is long and the capsule needs to be frequently changed is solved.

The invention discloses a static safety analysis system with a dispatcher accident prediction supporting function and belongs to the field of control. The static safety analysis system is characterized by in the scanning of preconceived faults of an online static safety analysis module in the static safety analysis system, adding an analyzing function of the operation of the automatic switching device of the standby power supply, achieving N-1 scanning after the operation of the automatic switching device of the standby power supply, computing the power flow after the operation of the automatic switching device of standby power supply in order to accurately reflect a power flow change after the operation of the automatic switching device of the standby power supply, and generating an accident preconceived text based on an analyzed result. The static safety analysis system may simulate and analyze power grid power flow distribution states in different operating modes, enables the dispatcher to be capable of online researching the safety stability of an regional power grid in real time, improves the safety stability of real-time online power grid research, generates available accident preconceived texts for the dispatcher, improves a capability of treating emergency power grid accidents for the dispatcher, and achieves dispatcher accident prediction supporting function.

A system for storing heat is provided having a first housing section with a first storage volume, wherein the first housing has a first opening for connecting the first storage volume to an environment. A first type of first heat storing elements is arranged within the first housing section. The system has a second housing section with a second storage volume, wherein the second housing section has a second opening for connecting the second storage volume to the environment, wherein the first and second storage volumes are interconnected for forming a common storage volume. A second type of second heat storing elements is arranged within the second housing section. The first heat storing elements of the first type have a respective first element size, wherein the second storing elements of the second type have a respective second element size. The first element size differs from the second element size.

The invention provides a method and a system for extracting a substance comprised in a gaseous mixture, the extraction being carried out in a cyclic manner in 2N chambers (AA, BB, CC, DD), each provided with a heat-exchanger (A, B, C, D), N being an integer greater than or equal to 3. Each chamber carries out a cycle comprising the following four steps in succession: a frosting step, a defrosting step, a step of recovering the liquid phase and the residual gas phase, and a temperature-reduction step of reducing the temperature of the heat-exchanger. Further, sequencing the passage from one step to another in each of the chambers is such that the number of chambers carrying out the frosting step and also the total number of chambers carrying out the defrosting, recovery, and temperature-reduction steps are both equal to N.

The invention discloses an intelligent advanced application system applicable to a local dispatching system, and belongs to the field of control. A spare power automatic switching model is arranged in a dispatcher training simulation system and an online static security analysis module, and an action simulation function for a spare power automatic switching automatic security device is provided. A spare power automatic switching action analysis function is added when the online static security analysis module of the local dispatching system scans expected faults, N-1 scanning after spare power automatic switching action is realized, flow after the spare power automatic switching action is calculated, a dispatcher can independently set the running mode of the spare power automatic switching device when the dispatcher training simulation system or the online static security analysis module is used for N-1 scanning, network power flow distribution in different running modes is simulated and analyzed, so that the dispatcher in a local power network can research safety and stability of a regional power network in real time on line, real-time online power network research safety and stability are improved, an available accident supposition text is generated for the dispatcher, and the power network accident emergency treatment capacity of the dispatcher is improved.

The invention discloses a local-level dispatch supporting system capable of improving an analyzing and processing capability of a dispatcher during accident generation and belongs to the field of control. The local-level dispatch supporting system is characterized by setting automatic switching device of standby power supply model in an online safety analysis module in a local-level dispatching system; in the scanning of preconceived faults of the online static safety analysis module, achieving N-1 scanning after the operation of the automatic switching device of the standby power supply, computing the power flow after the operation of the automatic switching device of standby power supply in order to accurately reflect a power flow change after the operation of the automatic switching device of the standby power supply, and generating an accident preconceived text based on an analyzed result. When the online static safety analysis module performs N-1 scanning, a dispatcher may autonomously set the operating mode of the automatic switching device of standby power supply so as to simulate and analyze power grid power flow distribution states in different operating modes, enable the dispatcher to be capable of online researching the safety stability of an regional power grid in real time, improve the safety stability of real-time online power grid research, generate available accident preconceived texts for the dispatcher, and improve a capability of treating emergency power grid accidents for the dispatcher.

This invention relates to a laminated heat exchanger, more particularly, which is constructed to close some of distribution channels in refrigerant distributing sections of tubes to uniformly distribute refrigerant into the tubes thereby improving refrigerant flow distribution. The laminated heat exchanger comprises a number of laminated tubes, a refrigerant inlet pipe, a refrigerant outlet pipe, a number of heat radiator fins and at least one of the tubes includes a pair of tanks, a refrigerant flow section for connecting the tanks via a partitioning bead formed between the tanks, refrigerant distribution sections provided at inlet and outlet sides of the refrigerant flow section and each having a plurality of distribution channels partitioned by at least one bead, and channel-restricting means provided in each of the refrigerant distribution sections, for restricting two outermost ones of the distribution channels.

Disclosed is a novel fluid flow field plate for use in a solid polymer electrolyte fuel cell. The flow field plate is made of a suitable electrically conducting material and comprises a substantially planar surface, a flow field formed in said substantially planar surface, said flow field comprising a plurality of staggered lands defining a network of substantially symmetric interconnected orifices and diagonal channels in the flow field and a fluid supply manifold through which fuel and an oxidant are introduced to the flow field and a fluid exhaust manifold through which reaction by-products and excess fuel and oxidant are removed from the flow field. Streams of the fuel, oxidant and reaction by-products are continually separated and diverted into separate channels, and the separated streams are then mixed with streams from adjacent channels in the orfices.

The present invention discloses a catalytic diesel fuel reaction distillation method. According to the method, equipment mainly comprises a reaction distillation tower and a hydrogen circulation system, the stripping section of the reaction distillation tower adopts a hydrocracking catalyst as a filler, the rectification section is provided with the rectification tower plate, the tower plate can be provided with an isomerization catalyst, one part of the tower bottom oil is circulated to the material inlet of the tower, the remaining part is discharged out from the equipment and is adopted as the product, a hydrogen circulation heating furnace is arranged, the heated hydrogen gas enters the bottom of the tower, and the gasoline distillate is obtained from the top of the tower. With the method, the characteristics of the hydrocracking and the reaction distillation process are completely utilized so as to reduce the secondary reaction of the light distillates and improve the hydrogenation reaction speed of the gasoline distillate. According to the present invention, the poor-quality cracking diesel fuel is adopted as the raw material to produce the high octane number naphtha and the high-quality diesel fuel, such that the obtained products can respectively be adopted as the blending component of the high octane number naphtha and the blending component of the high-quality diesel fuel; and compared with the conventional hydrogenation process, the method of the present invention has characteristics of simple process and energy saving.

The invention provides a multi-platform synchronization method of a spare power automatic switching model in a static safety analysis system, and belongs to the control field. According to the multi-platform synchronization method, in a dispatcher training simulation system and an on-line static safety analysis model, a spare power automatic switching model is disposed, and a spare power automatic switching automatic safety device action simulation function is provided. The spare power automatic switching model adopts the following synchronous method between the on-line static safety analysis model and the dispatcher training simulation system: maintenance of a spare power automatic switching device is achieved through a spare power automatic switching maintenance interface on a workstation of the dispatcher training simulation system, a current spare power automatic switching model is automatically guided into an XML file and is sent to a static safety analysis host standby machine after the spare power automatic switching model of the dispatcher training simulation system is changed, a monitoring program is set to monitor export time of the XML file in a static safety analysis module, and, if the export time in the XML file is found to be newer than model time of the current model, the XML file is automatically guided into the static safety analysis model.

Cartridges useful in regenerating or purifying dialysis solutions are described as well as methods to regenerate or purify spent dialysis solutions. Dialysis methods using the sorbent cartridges of the present invention are further described.

An air filter unit (1) for a carburetor (2) of a portable handheld work apparatus includes a filter element (3) and at least one clean air channel (10, 11) arranged between the filter element (3) and the carburetor (2). At least one condensation rib (29, 30, 31, 32) is arranged in the clean air channel (10, 11) running in flow direction.

Cartridges useful in regenerating or purifying dialysis solutions are described as well as methods to regenerate or purify spent dialysis solutions. Dialysis methods using the sorbent cartridges of the present invention are further described.

The invention relates to a thin wall header with a variable cross-section for solar absorption panels, manufactured in nickel-based superalloy and formed by a main thin wall body (18) and by a plurality of nozzles (16,21 ). The header (10) is connected to a series of junction nozzles (16) wherein respective solar absorption tubes (14) are connected, and at least one inlet or outlet nozzle (21 ) wherein at least a fed tube is connected. The body (18) can have a spindle shape or can be formed by two frustoconical sections joined by the larger base, and can further have a central cylindrical section at the height of the inlet or outlet nozzles (21 ). It is applicable in the collection of fluids at high temperature, especially in solar panels.

The invention discloses a low-specific-speed impeller and a design method for a blade of the low-specific-speed impeller. Both a front cover plate and a rear cover plate are of disc structures. The blade is designed according to the method that a column and twisting are combined, namely, a working face (4) or a back face (5) adopts a form of a backward bending column blade and the other side adopts a backward bending blade twisting mode, and therefore the blade accords with the law of fluid motion, reduces hydraulic loss, and improves efficiency of a low-specific-speed centrifuging pump. The thickness of the inlet edge, close to the front cover plate, of the blade is 2-3mm, the thickness of the inlet edge, close to the rear cover plate, of the blade is 5-7mm, and therefore sand mould casting lifting precision is improved, inlet flow passages can be partially blocked, and therefore blade inlet excluding coefficient is reduced, and the non-overload characteristic of the low-specific-speed centrifuging pump is improved. The low-specific-speed impeller and the design method for the blade of the low-specific-speed impeller can be applied to the field of efficient non-overload low-specific-speed impeller designing.

The invention relates to a continuous evaporator (1) for a horizontal waste heat steam generator comprising a first evaporator heating surface (8) that has a number of essentially vertically arranged first steam generating tubes (13) wherein the circulation takes place from the bottom to the top, and another second evaporator heating surface (10) located downstream of the first evaporator heating surface on the side of the flow medium, said second evaporator heating surface comprising a number of other essentially vertically arranged second steam generating tubes wherein the circulation takes place from the bottom to the top. The aim of the invention is to provide said continuous evaporator with an especially simple structure and an especially long service life. To this end, a number of second steam generating tubes (14) have an inner profiled element (22).

A system and a method for dehydrogenating isobutane to isobutylene are disclosed. The system comprises a fixed bed dehydrogenation reactor. The fixed reactor bed in the fixed bed dehydrogenation reactor includes a catalyst layer, a first material adapted to improve the flow distribution in the fixed reactor bed, a second material adapted to improve the thermal distribution in the fixed reactor bed, and a third material adapted to improve both the flow distribution and the thermal distribution in the fixed reactor bed. The first material covers a top, a bottom, and at least a portion of a side surface of the catalyst layer of the fixed reactor bed. The second material and the third material both are evenly distributed in the catalyst layer.

The invention discloses a column plate of a one-way fixed float valve, which comprises a valve opening (3), a valve plate (1) arranged on the column plate and a valve leg (4) connected to a column plate flat plate (2). The valve plate (1) is only provided with one valve leg (4), one surface of the valve plate (1) is fixed, and three surfaces of the valve plate (1) are hung; an included angle between the valve leg (4) and the column plate flat (2) is an acute angle; and the shape of the valve opening (3) on the column plate is identical with or similar to that of the valve plate (1). By adopting the structure, the invention improves the defects of excessive barrier generated by two valve legs of the traditional fixed valve and has low pressure drop and larger throughput, so that the mass transfer circumferential edge of the fixed valve is longer, the bubble is more uniform, and liquid on the column plate can be pushed towards the direction of an overflow weir by gas. Furthermore, the invention has the advantages of good flow distribution of the liquid on the surface of the column plate, higher separating efficiency, no movable piece and required connecting part, good dirt and blockresistant property, simple structure, easy processing, and low production cost which is only 70- 80 percent of the common float valve column plate.

The invention discloses an intelligent advanced application system applicable to a local dispatching system, and belongs to the field of control. A spare power automatic switching model is arranged in a dispatcher training simulation system and an online static security analysis module, and an action simulation function for a spare power automatic switching automatic security device is provided. A spare power automatic switching action analysis function is added when the online static security analysis module of the local dispatching system scans expected faults, N-1 scanning after spare power automatic switching action is realized, flow after the spare power automatic switching action is calculated, a dispatcher can independently set the running mode of the spare power automatic switching device when the dispatcher training simulation system or the online static security analysis module is used for N-1 scanning, network power flow distribution in different running modes is simulated and analyzed, so that the dispatcher in a local power network can research safety and stability of a regional power network in real time on line, real-time online power network research safety and stability are improved, an available accident supposition text is generated for the dispatcher, and the power network accident emergency treatment capacity of the dispatcher is improved.

The invention provides a desalination system, which comprises a first desalination module and a second desalination module, wherein the first desalination module comprises a filter, at least one three-stage filter and a fan; each three-stage filter comprises a front inertia gas-water separator, a screen coagulator and a back inertia gas-water separator; each three-stage filter is arranged in a series form; the second desalination module comprises a baffle plate, a filter screen and a spray nozzle; sea wind sequentially passes through the filter, the front inertia gas-water separators, the screen coagulators and the back inertia gas-water separators and then enters the second desalination module under the action of the fan; and the sea wind sequentially passes through the baffle plate, the filter screen and the spray nozzle and flows outside. According to the desalination system, the first desalination module is combined into the three-stage filters through an inertia stage and a screen stage and large-diameter particles in the sea wind can be eliminated; and small-diameter particleswhich has a diameter smaller than 1 microncan be eliminated by the second desalination module, so that desalination rate can reach 99% or over.

The invention discloses a static safety analysis system with a dispatcher accident prediction supporting function and belongs to the field of control. The static safety analysis system is characterized by in the scanning of preconceived faults of an online static safety analysis module in the static safety analysis system, adding an analyzing function of the operation of the automatic switching device of the standby power supply, achieving N-1 scanning after the operation of the automatic switching device of the standby power supply, computing the power flow after the operation of the automatic switching device of standby power supply in order to accurately reflect a power flow change after the operation of the automatic switching device of the standby power supply, and generating an accident preconceived text based on an analyzed result. The static safety analysis system may simulate and analyze power grid power flow distribution states in different operating modes, enables the dispatcher to be capable of online researching the safety stability of an regional power grid in real time, improves the safety stability of real-time online power grid research, generates available accident preconceived texts for the dispatcher, improves a capability of treating emergency power grid accidents for the dispatcher, and achieves dispatcher accident prediction supporting function.

An intake arrangement for a combustion chamber 40 comprises a first intake duct or branch 42 producing a substantially rotational flow 52 in the chamber and a second intake duct or branch 44 producing a flow divided into two components, the first component 54 being an axial flow into the chamber 40 and the second component being a rotational flow 55 having the same sense of rotation as that from the first duct 42. The first and second duct components 54, 55 arise from the shaping of a junction region 74 between branches 72, 76 of the second intake duct 44 adjacent the chamber 40.

A method for reducing the compression set of GDL during the fuel cell operation and a method for reducing the intrusion of the GDL into flow-field channels, both achieved by pre-compression preconditioning the GDL before placing it into the fuel cell. This preconditioning is performed in order to reduce the loss of compression during the life of the stack and the mal-distribution of reactant gases, and ultimately achieve the benefits of higher power output and more stable performance.

The invention relates to a thin wall header with a variable cross-section for solar absorption panels, manufactured in nickel-based superalloy and formed by a main thin wall body (18) and by a plurality of nozzles (16,21 ). The header (10) is connected to a series of junction nozzles (16) wherein respective solar absorption tubes (14) are connected, and at least one inlet or outlet nozzle (21 ) wherein at least a fed tube is connected. The body (18) can have a spindle shape or can be formed by two frustoconical sections joined by the larger base, and can further have a central cylindrical section at the height of the inlet or outlet nozzles (21 ). It is applicable in the collection of fluids at high temperature, especially in solar panels.

The invention discloses a power flow determining method in a static safety analysis system in view of the operation of an automatic switching device of a standby power supply and belongs to the field of control. The method is characterized by setting an automatic switching device of standby power supply model in an online static safety analysis module; in the scanning of preconceived faults in the online static safety analysis module, adding an analyzing function of the operation of the automatic switching device of the standby power supply, achieving N-1 scanning after the operation of the automatic switching device of the standby power supply, computing the power flow after the operation of the automatic switching device of standby power supply and generating an accident preconceived text based on an analyzed result. By using a manner embedding power flow computation into the function of the automatic switching device of the standby power supply, the power flow determining method improves the accuracy of original power flow computation, enables a computed result to more reflect a real power flow distribution state of a power grid, has practical and reference values to dispatchers, achieves power supply continuity analysis for important electric power users, and achieves a dispatcher accident preconceive support function.