38results about How to "Small head loss" patented technology

The present invention relates to Exchange tube support and securing assembly for tube exchanger. Specifically, the present invention relates to the field of the tube supports in heat exchangers used to exchange heat energy from one fluid to another without mixing them and its subject is more particularly a support for an exchange tube bundle forming, in a cutting plane, a mesh, said support (400) comprising a ring (40), wherein the ring (40) comprises fastening means making it possible to fasten, respectively, on either side of the cutting plane of the ring, a first set (41) of rods (410) and a second set (42) of rods (420), said rods (410, 420) each having a form which constitutes a median plane, the median planes of the first set (41) being parallel to one another and the median planes of the second set (42) being parallel to one another, the orientation of the median planes of the first set (41) and of the median planes of the second set (42) forming a first angle greater than zero.

The invention discloses a dust-free solid and liquid static mixing system, belonging to the field of solid and liquid mixing. The dust-free solid and liquid static mixing system has the structure that the dust-free solid and liquid static mixing system comprises a main fluid path and a powder path, wherein the main fluid path is formed by connecting a fluid inlet, a control valve, a jet flow negative-pressure mechanism, a second-level static mixer and a power pump in series; the power path is formed by successively connecting a feed pipe, a valve and a first-level static mixer in series; and he discharge hole of the first-level static mixer is connected with the jet flow inlet of the side wall of the jet flow negative-pressure mechanism. Compared with the prior art, the dust-free solid and liquid static mixing system disclosed by the invention has the characteristics that no dust pollutes the environment, the skin and the respiratory system of the human body are free from being harmed, powder materials and liquid can be fully mixed or dissolved or reacted, no powder roll with wet outside and dry inside is formed for viscous materials, no new power needs to be added if the mixing system is reformed on the original basis, a pressure head has small loss, mixing efficiency is high and the like. The dust-free solid and liquid static mixing system can be widely applied to occasions that powder or small-particle materials are mixed or dissolved with liquid.

The invention discloses a membrane module which can be applied to a flow battery unit. The membrane module comprises two frame bodies, multiple supporting pieces and membranes, wherein each frame body comprises a border part and a hollow part defined by the border part, at least one through hole through which liquid flows is arranged on the border part, first sides of the two border parts are arranged oppositely, second sides of the two border parts which are opposite to the first sides are respectively provided with at least one liquid flow groove extending from the through hole to the hollow part; the supporting pieces penetrate through the hollow parts in the first direction and are connected to the border parts; and the membranes can be maintained in the hollow parts of the two frame bodies by the supporting pieces. The invention also provides a flow battery unit containing the membrane module and a battery stack. By adopting the membrane module, electrolyte flowing in the membranes can be more evenly allocated, the internal resistance of the flow battery unit can be reduced and the service life of the membranes can be improved.

The non-return valve has an upstream inlet part installed to the drainage end of pipeline, a downstream outlet part suitable for preventing liquid through the valve from returning, and a transitio part between the upstream part and the downstream outlet part, with the downstream outlet part size in the direction perpendicular to flow direction being at least 1.57 times that of upstream inlet part.

The invention relates to a gas-water separator of a condenser condensate sampling device, which is characterized by having the structure that the gas-water separator is provided with a tank body, an air outlet and a sampling water outlet are arranged on the tank body, a sampling water distributor is arranged in the tank body, the water inlet of the sampling water distributor and the sampling water outlet of the tank body are serially connected with a sampling tube at the inlet of a sampling pump, and the air outlet of the tank body is communicated with a gas-phase cavity which is arranged on the upper part of the condenser by a vacuum valve arranged on a return pipe. In the tank body, a filter screen is arranged below the sampling water distributor, and at the position of the filter screen, the side wall of the tank body is provided with a decontamination window. The gas-water separator of the condenser condensate sampling device can remove the gas precipitated by the sampling water in the sampling tube before the inlet of the sampling pump and leads the gas to return to the condenser in time, reduce the head loss of the sampling tube before the inlet of the sampling pump, preventthe occurrence of gas accumulation effect, stabilize the pressure of the sampling pump inlet and avoid the cavitation phenomena of the pump. The gas-water separator of the condenser condensate sampling device has the advantages of adaptability, stability, good reliability, long service life and simple structure, etc.

The invention discloses a fluid distributor and belongs to the fluid distributing technical field. The fluid distributor comprises a distributing pipe body and guide plates. A flow distributing groove is formed in the pipe wall of the distributing pipe body. A blanking plate is arranged at the tail end of the distributing pipe body. The guide plates are arranged in the distributing pipe body. The guide plates are connected by inlet plates and outlet plates. The plate surfaces of the inlet plates extend along the entrance direction of the distributing pipe body. The plate surfaces of the outlet plates extend along the direction of the flow distributing groove. The guide plates are sequentially ranked along the length direction of the distributing pipe body. The inlet plates are ranked of a step shape, and projected areas on a cross section of space areas of the adjacent inlet plates are basically identical. Distance from the inlet plates to the flow distributing groove increases by degrees along the entrance of the distributing pipe body to the tail end of the distributing pipe body. The fluid distributor solves the technical problems of an existing distributor that heat exchange efficiency of a heat exchanger is low due to uneven flow distributing of an existing distributor, and is particularly suitable for refrigerant distributing of a plate type heat exchanger.

An aerosol tip mechanism for an aerosol-type dispenser for dispensing liquid content has a flexible outer shell, a rigid cap portion composed of lower and upper portions, and a rigid nozzle portion having a rigid shaft received within the outlet portion of the flexible outer shell. The rigid shaft interfaces the outlet portion of the outer shell, forming a first normally-closed one-way valve. The lower and upper portions of the rigid cap portion form boots adapted to receive an outlet portion of the flexible outer shell, the boots thereby constraining a lateral motion of the outlet portion of the outer shell, and symmetrically centering the outlet portion around the rigid shaft of the nozzle. The rigid nozzle portion includes a plurality of liquid channels for delivering liquid from a reservoir to a swirling chamber defined within the rigid cap portion, which liquid channels are configured to minimize energy losses of the liquid and promote a more homogeneous fluid particle size in the dispensed aerosol. The aerosol tip mechanism provides for long-term sterility of the stored fluid, which in turn allows for preservation of the sterility of non-chemically preserved formulations, which may be in the form of suspension or liquid gels.

A cleaning system (1) for cleaning a gas stream from a solidification unit (2) of a urea plant (3) comprises a first removal device (7) for removing urea powder and a second removal device (8) for removing ammonia, the two removal devices (7, 8) being arranged in series along a gas treatment circuit (13) and connected by a connecting line (16); at least one of the two removal devices (7, 8) is an electrostatic precipitator (11, 12) designed to remove substantially all or at least most of the contaminant treated in the removal device (7, 8), i.e. urea powder or ammonia.