EP1583912B1 - Accessory for a sudden air discharge device and discharge device comprising same - Google Patents

Accessory for a sudden air discharge device and discharge device comprising same Download PDF

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Publication number
EP1583912B1
EP1583912B1 EP04702348.6A EP04702348A EP1583912B1 EP 1583912 B1 EP1583912 B1 EP 1583912B1 EP 04702348 A EP04702348 A EP 04702348A EP 1583912 B1 EP1583912 B1 EP 1583912B1
Authority
EP
European Patent Office
Prior art keywords
accessory
air
surface area
tube
discharge device
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP04702348.6A
Other languages
German (de)
French (fr)
Other versions
EP1583912A1 (en
Inventor
Hervé Simoens
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
SIMOENS, HERVE
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to SI200432165T priority Critical patent/SI1583912T1/en
Publication of EP1583912A1 publication Critical patent/EP1583912A1/en
Application granted granted Critical
Publication of EP1583912B1 publication Critical patent/EP1583912B1/en
Priority to CY20141100466T priority patent/CY1115198T1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D25/00—Devices or methods for removing incrustations, e.g. slag, metal deposits, dust; Devices or methods for preventing the adherence of slag
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D88/00—Large containers
    • B65D88/54—Large containers characterised by means facilitating filling or emptying
    • B65D88/64—Large containers characterised by means facilitating filling or emptying preventing bridge formation
    • B65D88/70—Large containers characterised by means facilitating filling or emptying preventing bridge formation using fluid jets
    • B65D88/703—Air blowing devices, i.e. devices for the sudden introduction of compressed air into the container
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15D—FLUID DYNAMICS, i.e. METHODS OR MEANS FOR INFLUENCING THE FLOW OF GASES OR LIQUIDS
    • F15D1/00—Influencing flow of fluids
    • F15D1/08—Influencing flow of fluids of jets leaving an orifice

Definitions

  • the invention relates to a device for sudden discharge of air.
  • relief devices also called air gun.
  • the principle of these devices is to release suddenly a quantity of air so as to create a kind of deflagration that will remove the accumulation of material that accumulates during the manufacturing process.
  • such a device comprises a body housing a piston constituting a shutter disposed between a capacitor and an outlet pipe.
  • This outlet pipe is more or less long but, generally, for manufacturing and / or wear problems, this outlet pipe comprises a first part integral with the body of the discharge device and a second part or accessory intended to come extend the first part.
  • the discharge device being located outside the oven, this second part allows in particular to cross the wall and to open more or less distance from the inner face of said wall.
  • this second part or accessory also called nozzle
  • this second part or accessory has a constant surface area along its longitudinal axis but often the geometry of this section is variable.
  • the geometric shape of the input of this accessory is circular while the output geometry is eventually flattened to be able to occupy the place of one or more refractory bricks.
  • the volume of the capacity is limited because of the congestion thereof and, in many cases, the air supply pressure of these capacities is limited.
  • the invention proposes to provide a solution to improve the efficiency of these devices for sudden discharge of air.
  • the subject of the invention is a device for sudden discharge of air having the features of the main claim.
  • a device 1 for sudden discharge of air contained in a capacity 2 there is shown a device 1 for sudden discharge of air contained in a capacity 2.
  • the discharge device is mounted, for example, on a wall 9.
  • This sudden discharge device comprises a body 1A or envelope containing a shutter 3 and its seat 3A, which shutter, when moved away from its seat, allows the passage of the air contained in the capacity to an outlet pipe 4.
  • This short outlet pipe is extended by an accessory 5 in the form of a tube mounted coaxial with the axis of the outlet pipe 4.
  • This accessory is fixed on the end of the outlet pipe, by a fastening means 10 such as a flange.
  • This accessory 5 is generally fixed in a wall 9 through which it passes.
  • the air contained in the capacity escapes brutally by releasing, in a brief moment, a large energy causing a deflagration, ie an impact force that can be measured using a force sensor.
  • the area of the section of this tube decreases in the direction F of the air exhaust and then increases, thus forming a convergent section A and then diverging B.
  • the area E of the input of the accessory will be equal to the output area S.
  • the area S of the output of the accessory will be greater than this input area E.
  • the ratio between the section D taken at the level of the section having the smallest surface and the input section E will be greater than or equal to 1/5 but preferably greater than 1/3.
  • the ratio between the section D taken at the section with the smallest area and the section S output will be greater than or equal to 1/5.
  • the distance between the position of the aforementioned section D and the seat on which the shutter is resting will be a maximum of one meter for a pressure up to twelve bars.
  • Tests were carried out with an abrupt air discharge device with an inlet diameter E of 150 mm with a capacity of 100 liters.
  • the force sensor is placed at the end of a tube 500 mm long.

Description

L'invention se rapporte à un dispositif de décharge brusque d'air.The invention relates to a device for sudden discharge of air.

Par exemple, pour supprimer les zones d'accumulation de matière dans les fours des cimenteries, il est connu de faire appel à des dispositifs de décharge encore appelés canon à air.For example, to eliminate the areas of accumulation of material in the kilns of cement plants, it is known to use relief devices also called air gun.

Le principe de ces dispositifs est de libérer brutalement une quantité d'air en sorte de créer une sorte de déflagration qui va supprimer l'amoncellement de la matière qui s'accumule au cours du processus de fabrication.The principle of these devices is to release suddenly a quantity of air so as to create a kind of deflagration that will remove the accumulation of material that accumulates during the manufacturing process.

L'avantage de ces dispositifs consiste dans le fait qu'ils peuvent fonctionner en automatique et être mis en des endroits peu accessibles.The advantage of these devices is that they can operate automatically and be put in places not very accessible.

Ils évitent également l'intervention humaine, ce qui est un gage de sécurité.They also avoid human intervention, which is a guarantee of security.

Bien évidemment, ces canons à air sont utilisés dans d'autres domaines.Of course, these air guns are used in other areas.

Classiquement, un tel dispositif comprend un corps logeant un piston constituant un obturateur disposé entre une capacité et une conduite de sortie.Conventionally, such a device comprises a body housing a piston constituting a shutter disposed between a capacitor and an outlet pipe.

Lorsque l'obturateur s'écarte de son siège, l'air emprisonné dans la capacité s'échappe brutalement au travers de la conduite de sortie.As the shutter moves away from its seat, air trapped in the capacity escapes suddenly through the outlet pipe.

Cette conduite de sortie est plus ou moins longue mais, généralement, pour des problèmes de fabrication et/ou d'usure, cette conduite de sortie comprend une première partie faisant partie intégrante avec le corps du dispositif de décharge et une seconde partie ou accessoire destiné à venir prolonger la première partie.This outlet pipe is more or less long but, generally, for manufacturing and / or wear problems, this outlet pipe comprises a first part integral with the body of the discharge device and a second part or accessory intended to come extend the first part.

Le dispositif de décharge étant situé à l'extérieur du four, cette seconde partie permet notamment de traverser la paroi et de déboucher à plus ou moins distance de la face interne de la dite paroi.The discharge device being located outside the oven, this second part allows in particular to cross the wall and to open more or less distance from the inner face of said wall.

Classiquement, cette seconde partie ou accessoire, encore appelé tuyère, a une section de surface constante, au long de son axe longitudinal mais souvent la géométrie de cette section est variable.Conventionally, this second part or accessory, also called nozzle, has a constant surface area along its longitudinal axis but often the geometry of this section is variable.

En effet, la forme géométrique de l'entrée de cet accessoire est circulaire tandis que la géométrie de sortie est, éventuellement, aplatie afin de pouvoir occuper la place d'une ou plusieurs briques réfractaires.Indeed, the geometric shape of the input of this accessory is circular while the output geometry is eventually flattened to be able to occupy the place of one or more refractory bricks.

L'efficacité de ces dispositifs dépend du volume de la capacité, de la pression dans celle-ci et de la vitesse d'ouverture de l'obturateur.The effectiveness of these devices depends on the volume of the capacity, the pressure in it and the speed of opening of the shutter.

Il est très important de délivrer une quantité d'énergie dans un court instant.It is very important to deliver a quantity of energy in a short time.

Les effets produits par une déflagration ne sont pas comparables à l'effet d'un gaz sous pression alimentant en continu une tuyère ( DE-A-4128165 ou DE-A-2035378 ).The effects produced by a deflagration are not comparable to the effect of a pressurized gas supplying a nozzle continuously ( DE-A-4128165 or DE-A-2035378 ).

Dans certains endroits, le volume de la capacité est limité en raison de l'encombrement de celle-ci et, bien souvent, la pression d'alimentation en air de ces capacités est limitée.In some places, the volume of the capacity is limited because of the congestion thereof and, in many cases, the air supply pressure of these capacities is limited.

Il faut alors augmenter le nombre de ces dispositifs dans la mesure où il existe de la place ce qui n'est pas toujours le cas.It is then necessary to increase the number of these devices to the extent that there is room which is not always the case.

L'invention se propose d'apporter une solution permettant d'améliorer l'efficacité de ces dispositifs de décharge brusque d'air.The invention proposes to provide a solution to improve the efficiency of these devices for sudden discharge of air.

A cet effet, l'invention a pour objet un dispositif de décharge brusque d'air présentant les caractéristiques de la revendication principale .To this end, the subject of the invention is a device for sudden discharge of air having the features of the main claim.

L'invention sera bien comprise à l'aide de la description ci-après faite à titre d'exemple non limitatif en regard du dessin ci-annexé qui représente schématiquement :

  • figure 1 : un canon à air avec son accessoire monté,
  • figure 2 : l'accessoire vu en coupe axiale.
The invention will be better understood using the following description given by way of non-limiting example with reference to the attached drawing which schematically shows:
  • figure 1 : an air gun with its mounted accessory,
  • figure 2 : the accessory seen in axial section.

En se reportant au dessin, on voit un dispositif 1 de décharge brusque d'air contenu dans une capacité 2.Referring to the drawing, there is shown a device 1 for sudden discharge of air contained in a capacity 2.

Le dispositif de décharge est monté, par exemple, sur une paroi 9.The discharge device is mounted, for example, on a wall 9.

Ce dispositif de décharge brusque comprend un corps 1A ou enveloppe contenant un obturateur 3 et son siège 3A, lequel obturateur, lorsqu'il est écarté de son siège, autorise le passage de l'air contenu dans la capacité vers une conduite 4 de sortie.This sudden discharge device comprises a body 1A or envelope containing a shutter 3 and its seat 3A, which shutter, when moved away from its seat, allows the passage of the air contained in the capacity to an outlet pipe 4.

Cette conduite de sortie courte est prolongée par un accessoire 5 se présentant sous la forme d'un tube monté coaxial à l'axe de la conduite 4 de sortie.This short outlet pipe is extended by an accessory 5 in the form of a tube mounted coaxial with the axis of the outlet pipe 4.

Cet accessoire est fixé sur l'extrémité de la conduite de sortie, par un moyen de fixation 10 tel une bride.This accessory is fixed on the end of the outlet pipe, by a fastening means 10 such as a flange.

Cet accessoire 5 est généralement fixé dans une paroi 9 qu'il traverse.This accessory 5 is generally fixed in a wall 9 through which it passes.

Le fonctionnement de ces dispositifs de décharge brusque est le suivant :The operation of these sudden discharge devices is as follows:

Dans un premier temps, l'air provenant de l'alimentation vient s'accumuler dans la capacité qui se remplit.At first, air from the food comes to accumulate in the capacity that fills.

Lorsque la capacité a atteint la valeur requise de remplissage, l'alimentation de cette capacité est coupée et on commande le recul de l'obturateur qui s'écarte de son siège.When the capacity has reached the required filling value, the supply of this capacity is cut off and the shutter is pushed back away from its seat.

L'air contenu dans la capacité s'échappe brutalement en libérant, en un bref instant une énergie importante provoquant une déflagration, c'est à dire une force d'impact qui peut être mesurée à l'aide d'un capteur de force.The air contained in the capacity escapes brutally by releasing, in a brief moment, a large energy causing a deflagration, ie an impact force that can be measured using a force sensor.

Selon l'invention, l'aire de la section de ce tube décroît dans le sens F de l'échappement de l'air pour ensuite croître formant ainsi un tronçon convergent A puis divergent B.According to the invention, the area of the section of this tube decreases in the direction F of the air exhaust and then increases, thus forming a convergent section A and then diverging B.

On constate que l'on gagne ainsi en efficacité.It is found that one thus gains in effectiveness.

Dans une première forme de réalisation, l'aire E de l'entrée de l'accessoire sera égale à l'aire S de sortie.In a first embodiment, the area E of the input of the accessory will be equal to the output area S.

Dans une seconde forme de réalisation, l'aire S de la sortie de l'accessoire sera supérieure à cette aire E d'entrée.In a second embodiment, the area S of the output of the accessory will be greater than this input area E.

Le rapport entre la section D prise au niveau de la section ayant la surface la plus petite et la section d'entrée E sera supérieur ou égal à 1/5 mais de préférence supérieur à 1/3.The ratio between the section D taken at the level of the section having the smallest surface and the input section E will be greater than or equal to 1/5 but preferably greater than 1/3.

Le rapport entre la section D prise au niveau de la section ayant la surface la plus petite et la section S de sortie sera supérieur ou égal à 1/5.The ratio between the section D taken at the section with the smallest area and the section S output will be greater than or equal to 1/5.

La distance entre la position de la section D précitée et le siège sur lequel repose l'obturateur sera au maximum de un mètre pour une pression jusque douze bars.The distance between the position of the aforementioned section D and the seat on which the shutter is resting will be a maximum of one meter for a pressure up to twelve bars.

Des essais ont été réalisés avec un dispositif de décharge brusque d'air d'un diamètre d'entrée E de 150 mm avec une capacité de 100 litres.Tests were carried out with an abrupt air discharge device with an inlet diameter E of 150 mm with a capacity of 100 liters.

Le capteur de force est placé à l'extrémité d'un tube de 500 mm de long.The force sensor is placed at the end of a tube 500 mm long.

On constate que les résultats sont meilleurs lorsque le rapport D/E est compris entre 0,6 et 0,8.The results are better when the D / E ratio is between 0.6 and 0.8.

On obtient un gain de l'ordre de 50% en force d'impact.A gain of the order of 50% in impact force is obtained.

Avec ce système on minimise les effets des tourbillons qui pénalisent l'efficacité.With this system we minimize the effects of eddies that penalize efficiency.

Claims (5)

  1. Device for discharging a sudden blast of air contained in a container, comprising a wall (9), a body or a housing (1A) containing a valve (3) and its seat (3A), which valve, when lifted from its seat, allows air contained in the container to flow towards an outlet duct (4), and, affixed to the end of said outlet duct (4) by a fixing means (10) is an accessory (5) in the form of a tube in which the surface area of the internal section of this tube decreases from the inlet of said tube in the direction (F) in which the air is discharged and then increases to the outlet of said tube thereby forming a convergent (A) then divergent (B) internal section, characterised in that said tube is mounted coaxially with the axis of said outlet duct so as to extend through said wall and open at a distance from the internal face of said wall.
  2. Device for discharging a sudden blast of air as claimed in claim 1, characterised in that the ratio between the surface area of the internal section (D) of the tube measured on a level with the internal section having the smallest surface and the surface area of the internal section (E) of the inlet of the accessory is between 0.6 and 0.8.
  3. Device for discharging a sudden blast of air as claimed in claim 1, characterised in that the surface area (E) of the inlet of the accessory is equal to the surface area (S) of the outlet.
  4. Device for discharging a sudden blast of air as claimed in claim 1, characterised in that the surface area (S) of the outlet of the accessory is greater than the surface area (E) of the inlet.
  5. Device for discharging a sudden blast of air as claimed in claim 2, characterised in that the distance between the position of the section (D) of the accessory having the smallest surface and the seat (3A) on which the valve sits is at most one metre for a pressure of up to 12 bar.
EP04702348.6A 2003-01-16 2004-01-15 Accessory for a sudden air discharge device and discharge device comprising same Expired - Lifetime EP1583912B1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
SI200432165T SI1583912T1 (en) 2003-01-16 2004-01-15 Accessory for a sudden air discharge device and discharge device comprising same
CY20141100466T CY1115198T1 (en) 2003-01-16 2014-06-25 ACCESSORIES FOR AIR DISCHARGE DEVICE AND AIR DISCHARGE EQUIPPED WITH A FINISHED DISCHARGE

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR0300463A FR2850139B1 (en) 2003-01-16 2003-01-16 ACCESSORY FOR AN INJURY AIR DISCHARGE DEVICE AND DISCHARGE DEVICE EQUIPPED WITH SAID ACCESSORY
FR0300463 2003-01-16
PCT/FR2004/000069 WO2004070213A1 (en) 2003-01-16 2004-01-15 Accessory for a sudden air discharge device and discharge device comprising same

Publications (2)

Publication Number Publication Date
EP1583912A1 EP1583912A1 (en) 2005-10-12
EP1583912B1 true EP1583912B1 (en) 2014-04-02

Family

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Family Applications (1)

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EP04702348.6A Expired - Lifetime EP1583912B1 (en) 2003-01-16 2004-01-15 Accessory for a sudden air discharge device and discharge device comprising same

Country Status (14)

Country Link
US (1) US7337991B2 (en)
EP (1) EP1583912B1 (en)
JP (1) JP4614173B2 (en)
CN (1) CN100540920C (en)
CA (1) CA2512369C (en)
CY (1) CY1115198T1 (en)
DK (1) DK1583912T3 (en)
ES (1) ES2467159T3 (en)
FR (1) FR2850139B1 (en)
MX (1) MXPA05007597A (en)
PL (1) PL210790B1 (en)
PT (1) PT1583912E (en)
SI (1) SI1583912T1 (en)
WO (1) WO2004070213A1 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2884234B1 (en) * 2005-04-12 2009-08-21 Dionnet Thomas Richard Francoi AIR-SUPPLY VALVE COMPROMISED AND INSTANTLY DRAINED TO CREATE A PNEUMATIC DEFLAGRATION IN ORDER TO REMOVE THE MATERIALS FROM THE WALLS OF AN SILO OR ANY STORAGE UNIT
US20080121220A1 (en) * 2006-11-28 2008-05-29 Disney Enterprises, Inc. Device for producing high speed air projectiles or pulses
WO2016113835A1 (en) * 2015-01-13 2016-07-21 東洋ハイテック株式会社 Powder particle discharging device and powder particle discharging method

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GB885213A (en) * 1957-03-02 1961-12-20 Airnesco Products Ltd Pulsating jet blast apparatus
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US3788527A (en) * 1973-01-22 1974-01-29 Martin Eng Co Quick-release aerator for introducing high pressure air into a container to facilitate dispensing
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JPS5941284U (en) * 1982-09-07 1984-03-16 株式会社林製作所 High-pressure gas discharge device that promotes the outflow of powder and granular materials
DE3444039A1 (en) * 1984-12-03 1986-06-05 Herion-Werke Kg, 7012 Fellbach CONTROL VALVE
JPS61121964U (en) * 1985-01-18 1986-08-01
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DE4128165A1 (en) * 1991-08-24 1993-02-25 Altmayer Planungs Konstruktion Air inlet nozzle for loose bulk material - has restriction and expansion areas to produce pulsating air flow for better loosening
JPH06107338A (en) * 1991-10-04 1994-04-19 Soc Financiere De Gestion Valve for feeding large amount of solid object
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FR2840047B1 (en) * 2002-05-24 2004-08-06 Herve Simoens Sudden air discharge device
FR2840046B1 (en) * 2002-05-24 2004-07-16 Herve Simoens QUICK AIR DISCHARGE DEVICE WITH IMPROVED EJECTION LINE

Also Published As

Publication number Publication date
CN100540920C (en) 2009-09-16
JP4614173B2 (en) 2011-01-19
ES2467159T3 (en) 2014-06-12
PL210790B1 (en) 2012-02-29
US20060121839A1 (en) 2006-06-08
MXPA05007597A (en) 2005-09-30
EP1583912A1 (en) 2005-10-12
FR2850139B1 (en) 2006-04-14
JP2006517498A (en) 2006-07-27
SI1583912T1 (en) 2014-07-31
US7337991B2 (en) 2008-03-04
CA2512369A1 (en) 2004-08-19
CN1738975A (en) 2006-02-22
FR2850139A1 (en) 2004-07-23
PL378632A1 (en) 2006-05-15
WO2004070213A1 (en) 2004-08-19
DK1583912T3 (en) 2014-06-16
PT1583912E (en) 2014-05-27
CY1115198T1 (en) 2017-01-04
CA2512369C (en) 2010-04-20

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