EP1583912A1 - 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

Info

Publication number
EP1583912A1
EP1583912A1 EP04702348A EP04702348A EP1583912A1 EP 1583912 A1 EP1583912 A1 EP 1583912A1 EP 04702348 A EP04702348 A EP 04702348A EP 04702348 A EP04702348 A EP 04702348A EP 1583912 A1 EP1583912 A1 EP 1583912A1
Authority
EP
European Patent Office
Prior art keywords
accessory
section
discharge device
area
accessory according
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.)
Granted
Application number
EP04702348A
Other languages
German (de)
French (fr)
Other versions
EP1583912B1 (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
Simoens Herve
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 Simoens Herve filed Critical Simoens Herve
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

Links

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

Abstract

The invention relates to an accessory which is intended to be mounted to the end of the outlet conduit (4) of a sudden air discharge device (1). The inventive accessory takes the form a tube which is mounted coaxially to the axis of the outlet conduit. The invention is characterised in that the cross-sectional area of the tube decreases in the direction (F) in which the air is discharged and, subsequently, increases, thereby forming a convergent segment (A) followed by a divergent segment (B).

Description

ACCESSOIRE POUR DISPOSITIF DE DECHARGE BRUSQUE D'AIR ET DISPOSITIF DE DECHARGE EQUIPE DE CET ACCESSOIRE ACCESSORY FOR A QUICK AIR DISCHARGE DEVICE AND DISCHARGE DEVICE PROVIDED WITH SUCH ACCESSORY
L'invention se rapporte à un accessoire pour un dispositif de décharge brusque d'air.The invention relates to an accessory for a sudden air discharge device.
Elle se rapporte également au dispositif de décharge brusque d'air équipé de cet accessoire. 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.It also relates to the sudden air discharge device equipped with this accessory. For example, in order to suppress the zones of accumulation of material in the kilns of cement factories, it is known to use discharge devices also called air guns.
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 suddenly release a quantity of air so as to create a kind of deflagration which will suppress the heap of material which 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 placed in inaccessible places.
Ils évitent également l'intervention humaine, ce qui est un gage de sécurité. Bien évidemment, ces canons à air sont utilisés dans d'autres domaines. Classiquement, un tel dispositif comprend un corps logeant un piston constituant un obturateur disposé entre une capacité et une conduite de sortie.They also avoid human intervention, which is a guarantee of security. Obviously, these air guns are used in other fields. Conventionally, such a device comprises a body housing a piston constituting a shutter disposed between a capacity 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.When the shutter moves away from its seat, the air trapped in the tank suddenly escapes 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 forming an integral part with the body of the discharge device and a second part or accessory intended to come and 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. 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.The discharge device being located outside the oven, this second part makes it possible in particular to pass through the wall and to open out at more or less distance from the internal face of said wall. Conventionally, this second part or accessory, also called a nozzle, has a constant surface section 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 entry of this accessory is circular while the exit geometry is, possibly, flattened in order 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 therein and the speed of opening of the shutter.
Il est très important de délivrer une quantité d'énergie dans un court instant. 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).It is very important to deliver a quantity of energy in a short instant. The effects produced by a deflagration are not comparable to the effect of a pressurized gas continuously feeding a nozzle (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 due to the size of the latter and, very often, 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 insofar as there is space 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. A cet effet, l'invention a pour objet un accessoire destiné à être monté sur l'extrémité d'une conduite de sortie d'un dispositif de décharge brusque d'air, cet accessoire se présentant sous la forme d'un tube monté coaxial à l'axe de la conduite de sortie, cet accessoire étant caractérisé en ce que l'aire de la section de ce tube décroît dans le sens de l'échappement de l'air pour ensuite croître formant ainsi un tronçon convergent puis divergent.The invention proposes to provide a solution making it possible to improve the efficiency of these sudden air discharge devices. To this end, the subject of the invention is an accessory intended to be mounted on the end of an outlet pipe of an abrupt air discharge device, this accessory being in the form of a tube mounted coaxially to the axis of the outlet pipe, this accessory being characterized in that the cross-sectional area of this tube decreases in the direction of the exhaust of the air and then increases, thus forming a convergent then divergent section.
L'invention a également pour objet le dispositif de décharge brusque équipé de l'accessoire selon l'invention.The invention also relates to the sudden discharge device equipped with the accessory according to the invention.
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 :The invention will be better understood with the aid of the description below given by way of nonlimiting example with regard to the appended drawing which schematically represents:
- figure 1 : un canon à air avec son accessoire monté, - figure 2 : l'accessoire vu en coupe axiale.- Figure 1: an air cannon 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, we see 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. Ce dispositif de décharge brusque comprend un corps 1A ou enveloppe contenant un obturateur 3 et son siège 3 A, 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.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 3 A, which shutter, when it is 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 to the end of the outlet pipe, by a fixing 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 which it passes through.
Le fonctionnement de ces dispositifs de décharge brusque est le suivant : Dans un premier temps, l'air provenant de l'alimentation vient s'accumuler dans la capacité qui se remplit.The operation of these sudden discharge devices is as follows: Firstly, the air coming from the supply comes to accumulate in the capacity which is filled.
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. 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.When the capacity has reached the required filling value, the supply to this capacity is cut off and the shutter which moves away from its seat is controlled. The air contained in the capacity suddenly escapes, releasing, in a brief instant, a significant energy causing a deflagration, that is to say an impact force which 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 cross-sectional area of this tube decreases in the direction F of the exhaust of the air and then increases, thus forming a convergent section A then divergent B.
On constate que l'on gagne ainsi en efficacité.We see that we gain in efficiency.
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 entry of the accessory will be equal to the area S of exit.
Dans une seconde forme de réalisation, l'aire S de la sortie de l'accessoire sera supérieure à cette aire E d'entrée. 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 e 1/3.In a second embodiment, the area S of the outlet of the accessory will be greater than this area E of entry. The ratio between the section D taken at the level of the section having the smallest area and the inlet 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 section D taken at the section with the smallest area and the outlet section S 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 rests will be at most 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 have been 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 500 mm long tube.
On constate que les résultats sont meilleurs lorsque le rapport D/E est compris entre 0,6 et 0,8.It is found that 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. Avec ce système on minimise les effets des tourbillons qui pénalisent l'efficacité. A gain of the order of 50% in impact force is obtained. With this system we minimize the effects of vortices which penalize efficiency.

Claims

REVENDICATIONS
1. Accessoire destiné à être monté sur l'extrémité d'une conduite de sortie (4) d'un dispositif (1) de décharge brusque d'air, cet accessoire se présentant sous la forme d'un tube monté coaxial à l'axe de la conduite de sortie, cet accessoire étant CARACTERISE en ce que 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).1. Accessory intended to be mounted on the end of an outlet pipe (4) of a device (1) for sudden discharge of air, this accessory being in the form of a tube mounted coaxial with the axis of the outlet pipe, this accessory being CHARACTERIZED in that the cross-sectional area of this tube decreases in the direction (F) of the air exhaust and then increases, thus forming a convergent section (A) then divergent (B).
2. Accessoire selon la revendication 1 caractérisé en ce que l'aire (E) de l'entrée de l'accessoire est égale à l'aire (S) de la sortie.2. Accessory according to claim 1 characterized in that the area (E) of the inlet of the accessory is equal to the area (S) of the outlet.
3. Accessoire selon la revendication 1 caractérisé en ce que l'aire (S) de la sortie de l'accessoire est supérieure à cette aire (E) d'entrée.3. Accessory according to claim 1 characterized in that the area (S) of the outlet of the accessory is greater than this area (E) of entry.
4. Accessoire selon la revendication 1 caractérisé en ce que le rapport entre la section (D) prise au niveau de la section ayant la surface la plus petite et la section (E) d'entrée est supérieur ou égal à 1/5.4. Accessory according to claim 1 characterized in that the ratio between the section (D) taken at the level of the section having the smallest surface and the inlet section (E) is greater than or equal to 1/5.
5. Accessoire selon la revendication 1 caractérisé en ce que le rapport entre la section (D) prise au niveau de la section ayant la surface la plus petite et la section (E) d'entrée est supérieur à 1/3.5. Accessory according to claim 1 characterized in that the ratio between the section (D) taken at the section having the smallest area and the inlet section (E) is greater than 1/3.
6. Accessoire selon la revendication 1 caractérisé en ce que le rapport entre la section (D) prise au niveau de la section ayant la surface la plus petite et la section (E) d'entrée est comprise entre 0,6 et 0,8.6. Accessory according to claim 1 characterized in that the ratio between the section (D) taken at the section having the smallest area and the inlet section (E) is between 0.6 and 0.8 .
7. Accessoire selon la revendication 1 caractérisé en ce que le rapport entre la section (D) prise au niveau de la section ayant la surface la plus petite et la section (S) de sortie est supérieur ou égal à 1/5. 7. Accessory according to claim 1 characterized in that the ratio between the section (D) taken at the level of the section having the smallest surface and the outlet section (S) is greater than or equal to 1/5.
8. Accessoire selon la revendication 1 caractérisé en ce que la distance entre la position de la section (D) et le siège sur lequel repose l'obturateur est au maximum de un mètre pour une pression jusque douze bars.8. Accessory according to claim 1 characterized in that the distance between the position of the section (D) and the seat on which the shutter rests is at most one meter for a pressure up to twelve bars.
9. Dispositif de décharge brusque d'air équipé de l'accessoire selon l'une quelconque des revendications 1 à 7. 9. Sudden air discharge device equipped with the accessory according to any one of claims 1 to 7.
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 true EP1583912A1 (en) 2005-10-12
EP1583912B1 EP1583912B1 (en) 2014-04-02

Family

ID=32605802

Family Applications (1)

Application Number Title Priority Date Filing Date
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)

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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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Also Published As

Publication number Publication date
CA2512369A1 (en) 2004-08-19
JP4614173B2 (en) 2011-01-19
SI1583912T1 (en) 2014-07-31
ES2467159T3 (en) 2014-06-12
PL210790B1 (en) 2012-02-29
EP1583912B1 (en) 2014-04-02
FR2850139B1 (en) 2006-04-14
MXPA05007597A (en) 2005-09-30
US20060121839A1 (en) 2006-06-08
CY1115198T1 (en) 2017-01-04
WO2004070213A1 (en) 2004-08-19
CN1738975A (en) 2006-02-22
CA2512369C (en) 2010-04-20
PT1583912E (en) 2014-05-27
DK1583912T3 (en) 2014-06-16
US7337991B2 (en) 2008-03-04
PL378632A1 (en) 2006-05-15
FR2850139A1 (en) 2004-07-23
CN100540920C (en) 2009-09-16
JP2006517498A (en) 2006-07-27

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