38results about How to "Improve flow distribution" patented technology

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.

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.

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.

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 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).

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.

In an intake arrangement for a combustion chamber in which a first intake duct produces a substantially rotational flow in the chamber, the flow from a second intake duct is divided into two components. The first component is an axial flow into the chamber and the second component is a rotational flow having the same sense of rotation as the first duct. The first and second components arise from the shaping of a junction region between branches of the second intake duct adjacent the chamber.

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.

The present invention provides a desalination system, including a first desalination module and a second desalination module, the first desalination module includes a filter, at least one third-stage filter and a fan, and the third-stage filter includes a front inertia stage air-water separator, wire mesh coalescer and post-inertial stage air-water separator, and each three-stage filter is arranged in series. The second desalination module includes baffles, filter screens and nozzles. Under the action of the fan, the sea breeze enters the second desalination module after passing through the filter, the front inertia stage air-water separator, the wire mesh coalescer and the rear inertia stage air-water separator, and then the sea breeze passes through the baffle, filter screen and nozzle in sequence After the outflow, the above-mentioned desalination system, the first desalination module is composed of an inertial stage and a wire mesh stage to form a three-stage filter that can remove large-diameter particles in the sea breeze, and the second desalination module can remove particles as small as 1 μm in diameter. Achieve a salt removal rate of over 99%.

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.