• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:

    公开号:BE1020814A5
    申请号:E201200366
    申请日:2012-05-31
    公开日:2014-05-06
    发明作者:Yves Braud；Ludovic Ferrand；Arnaud Ceccotti
    申请人:Cockerill Maintenance & Ingenierie Sa；
    IPC主号:
    专利说明:

    AERODYNAMIC DEVICE FOR REGULATING TEMPERATURE AND PRESSURE IN A FLUID CIRCULATION CIRCUIT
    The present invention relates to a device for regulating temperature and pressure in a fluid circuit such as fumes from combustion chambers. The device is more particularly intended to be used for the regulation of chimney effluents.
    It is known pressure control systems in the form of registers, regulators, valves whose essential feature is to contain or release the fluid by moving members.
    It is also known temperature control devices by heat exchanger that require the contact of the fluid to be cooled with a heat exchange surface.
    These types of devices are very sensitive to the aggressiveness of the fluid to be regulated, especially in a corrosive environment, fouling or in the case of high fluid temperatures. Subject to such conditions, the bodies in contact with the fluid flow are the object of perforating corrosion, formation of thick deposit, seizure ... These phenomena quickly render inoperative the control systems by organs in contact with the fluid to be regulated . Solutions to overcome these weaknesses can be the use of expensive stainless materials, oversizing actuators, intensive preventive maintenance. These answers have the disadvantage of being relatively expensive.
    This is particularly true in the field of the evacuation of combustion fumes, and in particular in smoke circuits and other chimneys disposed at the furnace outlet.
    An object of the invention is to provide a means for regulating a fluid, which is protected from the fluid to be regulated.
    For this purpose, according to the invention, provision is made for a fluid control device comprising a main flow conduit of the fluid to be regulated equipped with means for injecting at least one additional fluid into the main conduit selectively. according to at least two orientations. The means for selecting the orientation of the injection is disposed outside the duct.
    As used herein the term "make-up fluid" refers to any product having a fluid behavior. The nature of the makeup fluid, its quantity, the orientation of its injection as well as its thermodynamic state variables make it possible to regulate the temperature, the pressure and the flow rate of the fluid to be regulated, without exposing moving members sensitive to the flow of the fluid. fluid to be regulated.
    Other features and advantages of the invention will become apparent from reading the following description of particular non-limiting embodiments of the invention.
    Reference will be made to the single appended figure schematically showing a control device according to the invention.
    With reference to the figure, the invention is here described in application to a flue gas duct connected to a combustion chamber, such as an oven, for discharging fumes to the outside. The exhaust duct is optionally connected to a flue gas treatment device for the purpose of cleaning up the flue gases before they are discharged into the atmosphere. The flow direction of the fluid is indicated by a hollow arrow in the figure.
    The regulating device is connected to the duct 1 in order to control the fumes which constitute the fluid to be regulated.
    The regulation can relate to one or more characteristics of the fumes such as pressure and temperature. The adjustment of the flue gas pressure makes it possible to regulate the pressure in the combustion chamber in order to make it safe to operate and to prevent any entry of spurious air. The pressure regulation can also effectively compensate for a lack of draft of the exhaust stack. The adjustment of the flue gas temperature makes it possible to satisfy anti-pollution standards and also to optimize the operation of the flue gas treatment device when the duct is equipped with such a device.
    The device comprises a main conduit 1 for circulating the fluid to be regulated on which a nozzle 2 for supplying a makeup fluid is tapped. The main duct 1 is connected to the flue gas duct to form a part of it. The pipe 2 is equipped with a supply valve 2.1 and an element 2.2 for injecting the makeup fluid into the main pipe 1 in at least two directions.
    The injection element 2.2 here consists of an annular casing delimiting the main duct 1 and having two outlets having different orientations. A first outlet extends perpendicularly to the direction of the fluid to be regulated (radial injection) and a second outlet is oriented in the direction of the fluid to be regulated (axial injection). This box is equipped with a movable flap 2.3 mounted in the box between the two outlets to provide a means for selecting the orientation of the injection of the makeup fluid. The opening of the valve 2.1 brings a flow of additional fluid. The movable flap 2.3 directs this flow towards one or the other of the outputs but can also supply both outputs simultaneously. The makeup fluid flow is then divided between the two orientations. The position of the movable flap 2.3 also makes it possible to quantitatively distribute the flow of makeup fluid between the two outlets. The movable flap 2.3, mounted in the box, is thus protected from the flow of fluid to be regulated and its aggressions.
    The makeup fluid line 2 is connected to a tank, a fan, a pump or any other device capable of delivering the product according to the flow rate and / or the required pressure. Devices acting on the temperature of the auxiliary fluid, such as a heating resistor / hot water circulation tube winding helically around the pipe or a heater, act on the temperature of the auxiliary fluid. . Closing the valve 2.1 terminates the control. This valve can also be used to adjust the pressure and flow rate of the makeup fluid.
    The regulation of the fluid to be regulated therefore comprises the step of injecting at least one additional fluid into a fluid circulation duct to be regulated so as to modify at least one of the thermodynamic state variables of said fluid and also comprises a step of selecting a makeup fluid. The nature, the quantity, the orientation and the thermodynamic state variables (such as pressure, flow rate, temperature) of the makeup fluid are determined according to the expected result: lowering of the temperature by injection of a fluid of auxiliary cooler than the fluid to be regulated, increase of the upstream pressure by radial injection of a fluid at a pressure greater than the pressure of the fluid to be regulated.
    Other effects can be obtained by combining the orientations, the number of injection points, their distribution as well as the parameters relating to the additional fluid: type, quantity and thermodynamic state variables.
    Here, the regulation of combustion fumes is carried out with pressurized air as a supplementary fluid.
    Of course, the invention is not limited to the embodiments described but encompasses any variant within the scope of the invention as defined by the claims.
    In particular: the movable flap 2.3 may be replaced by a double valve, a flap, a drawer system or any other means of selection; the means for orienting the makeup fluids can be made by any suitable means and in particular a flap, flap, slide, valve, steerable nozzle disposed outside the main duct; the injection orientations can be combined with each other; the injections may be made at angles different from those mentioned and for example 10 ° or 15 ° with respect to an axial direction of the main duct and / or with respect to a direction transverse to the main duct; the injection can be done on all or part of the periphery of the main duct; the injection can be performed by means of several injection points distributed over the length and the periphery of the main duct; the makeup fluid may be identical or different from the main fluid; - The tapping of the supply fluid supply line 2 can be done in all directions; particular effects of regulation (increase of the flow, passage to a laminar flow of the fluid or others) can be obtained by tangential injection of the makeup fluid.
    权利要求:
    Claims (14)
    [1]
    1. Device for regulating a fluid comprising a main conduit for circulating the fluid to be regulated, characterized in that it comprises means for injecting at least one additional fluid into the main conduit selectively in at least two orientations, the injection means being arranged to supply the main conduit with additional fluid by a single tapping and in that the means for selecting the orientation of the injection is located outside the main conduit.
    [2]
    2. Device according to claim 1, wherein the means for orienting the makeup fluids is made by valve, flap, slide, valve, steerable nozzle disposed outside the main conduit. s
    [3]
    3. Device according to claim 1, wherein the injection means is arranged to allow a substantially radial injection of additional fluid.
    [4]
    4. Device according to claim 1, wherein the injection means is arranged to allow a substantially axial injection of makeup fluid.
    [5]
    5. Device according to claim 1, comprising means for obtaining an increase or a reduction of the temperature in the conduit by the injection of makeup fluid.
    [6]
    6. Device according to claim 1, comprising means for obtaining an increase or reduction of the pressure upstream in the conduit by the injection of makeup fluid.
    [7]
    7. Device according to claim 1, comprising means for obtaining an increase or a reduction of the flow rate in the conduit by the injection of makeup fluid.
    [8]
    8. Device according to claim 1, wherein the injection means comprises an annular box defining the main conduit and having two outputs having different orientations, the box being equipped with a movable flap mounted in the box between the two outlets for constitute a means for selecting the orientation of the injection of the makeup fluid.
    [9]
    9. A method for regulating a fluid comprising the step of injecting with the aid of the device of claim 1, selectively in at least two orientations, at least one additional fluid in a fluid circulation duct to be regulated. in order to modify at least one of the thermodynamic state variables of said fluid.
    [10]
    The method of claim 9, wherein the adjusted thermodynamic state variable is the pressure of the fluid to be regulated.
    [11]
    The method of claim 9, wherein the adjusted thermodynamic state variable is the temperature of the fluid to be regulated.
    [12]
    The method of claim 9, wherein the adjusted thermodynamic state variable is the flow rate of the fluid to be regulated.
    [13]
    13. The method of claim 9, comprising a step of selecting a makeup fluid.
    [14]
    14. Conduit of. chimney provided with a device according to any one of claims 1 to 8.
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    同族专利:
    公开号 | 公开日
    CN102818274A|2012-12-12|
    RU2524499C2|2014-07-27|
    FR2976329B1|2016-02-05|
    EP2532960A3|2013-10-02|
    US20120312203A1|2012-12-13|
    RU2012123512A|2013-12-20|
    EP2532960A2|2012-12-12|
    FR2976329A1|2012-12-14|
    CN102818274B|2016-04-13|
    BR102012013561A2|2013-07-02|
    引用文献:
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    DE3507245A1|1985-03-01|1986-09-04|Heinz 7801 Hartheim Heußner|Auxiliary device for ventilation installations and chimneys|
    US6269755B1|1998-08-03|2001-08-07|Independent Stave Company, Inc.|Burners with high turndown ratio|
    EP1413828A2|2002-10-25|2004-04-28|Joseph Raab GmbH & Cie. KG|Exhaust system and method of operating a double-walled chimney pipe|
    US3835796A|1973-12-13|1974-09-17|Y Sanga|Exhaust smoke purifying apparatus for incinerators|
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    SG196794A1|2005-12-19|2014-02-13|Leseman Davis Llc|Method and apparatus for manipulating and diluting internal combustion exhaust gases|CN108386393B|2016-08-01|2019-05-28|西南大学|A kind of working method of the air amplifier used under suitable cryogenic conditions|
    法律状态:
    2019-01-30| MM| Lapsed because of non-payment of the annual fee|Effective date: 20180531 |
    优先权:
    申请号 | 申请日 | 专利标题
    FR1154965|2011-06-07|
    FR1154965A|FR2976329B1|2011-06-07|2011-06-07|AERODYNAMIC DEVICE FOR REGULATING TEMPERATURE AND PRESSURE IN A FLUID CIRCULATION CIRCUIT|
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