FR2527567A1 - Valve for gas suspended powder - is rectangular hollow section slide and gas fed inside escapes between edge and invert - Google Patents

Valve for gas suspended powder - is rectangular hollow section slide and gas fed inside escapes between edge and invert Download PDF

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Publication number
FR2527567A1
FR2527567A1 FR8209222A FR8209222A FR2527567A1 FR 2527567 A1 FR2527567 A1 FR 2527567A1 FR 8209222 A FR8209222 A FR 8209222A FR 8209222 A FR8209222 A FR 8209222A FR 2527567 A1 FR2527567 A1 FR 2527567A1
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France
Prior art keywords
gas
cover
hatch
valve
holes
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Granted
Application number
FR8209222A
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French (fr)
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FR2527567B1 (en
Inventor
Jacques Durand
Claude Amieux
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Stein Industrie SA
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Stein Industrie SA
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Filing date
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Application filed by Stein Industrie SA filed Critical Stein Industrie SA
Priority to FR8209222A priority Critical patent/FR2527567A1/en
Publication of FR2527567A1 publication Critical patent/FR2527567A1/en
Application granted granted Critical
Publication of FR2527567B1 publication Critical patent/FR2527567B1/fr
Granted legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K3/00—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing
    • F16K3/02—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with flat sealing faces; Packings therefor

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Pipeline Systems (AREA)

Abstract

The sliding valve (2) guided by tracks is used to control a flow of a gas suspended powder through rectangular section conduit (1), having a hollow rectangular horizontal cross section with the longitudinal sides normal to the flow. A gas at a higher pressure than that in the conduit can be fed to the interior of the valve and is permitted to escape between the valve edge and the conduit floor, thus reducing valve wear. The gas escape system may use secondary valves in the form of heavy plates (14,15) mounted on pins (12,13) located by oversize holes (11) in the floor of the valve. When the main valve is closed the arrangement is such that the secondary valves are open, the opening of main valve causing the secondary valves to close automatically under the weight of the plates.

Description

Trappe de fermeture d'une canalisation de transport d'un produit pulvérulent
La présente invention concerne une trappe de fermeture d'une canalisation de section droite rectangulaire pour le transport d'un produit solide pulvérulent en suspension dans un gaz, comprenant un opercule coulissant dans des glissières.Closing flap of a pipe for transporting a powdery product
The present invention relates to a hatch for closing a pipe of rectangular cross section for the transport of a powdery solid product in suspension in a gas, comprising a cover sliding in slides.

Les trappes de ce genre sont munies sur leur pourtour de joints destinées à assurer leur étancheité. Cependant ceux-ci s'usent rapidement, surtout lorsque le produit pulvérulent est abrasif. Lorsque l'on veut changer le joint, il est nécessaire de retirer et de démonter la trappe, ce qui constitue une opération relativement longue. The hatches of this kind are provided on their periphery with seals intended to ensure their tightness. However, these wear out quickly, especially when the powdered product is abrasive. When you want to change the seal, it is necessary to remove and disassemble the hatch, which is a relatively long operation.

La présente invention a pour but de remédier à ces difficultés, et de procurer une trappe qui puisse fonctionner pendant de très longues périodes sans usure sensible, sans bouchage et sans démontage complet, et qui assure néanmoins une excellente étanchéité vis-à-vis du produit pulvérulent. The object of the present invention is to remedy these difficulties, and to provide a hatch which can operate for very long periods without appreciable wear, without clogging and without complete disassembly, and which nevertheless ensures excellent tightness with respect to the product. powdery.

La trappe selon l'invention est caractérisée en ce que son opercule comporte deux faces larges perpendiculaires à l'axe de la canalisation, et deux faces étroites parallèles à cet axe, définissant un espace interne, et en ce que ce dernier est relié à des moyens d'admission d'un gaz sous une pression un peu supérieure à celle régnant dans la canalisation, et à des moyens permettant des fuites de ce gaz dans la canalisation entre le fond de l'opercule et la paroi de la canalisation contre laquelle ce fond vient s'appliquer en position de fermeture, et entre les parois latérales et les deux faces étroites de l'opercule. The hatch according to the invention is characterized in that its cover has two wide faces perpendicular to the axis of the pipe, and two narrow faces parallel to this axis, defining an internal space, and in that the latter is connected to means for admitting a gas at a pressure slightly higher than that prevailing in the pipe, and means allowing leaks of this gas in the pipe between the bottom of the cover and the wall of the pipe against which this bottom is applied in the closed position, and between the side walls and the two narrow faces of the cover.

Elle répond en outre de préférence à au moins l'une des caractéristiques suivantes : - La partie inférieure de l'opercule est munie de trous permettant l'écoulement du gaz sous pression en position de fermeture, mais s'opposant à celui-ci en position d'ouverture. It also preferably meets at least one of the following characteristics: - The lower part of the cover is provided with holes allowing the flow of pressurized gas in the closed position, but opposing it by open position.

- L'opercule est muni de masses pesantes de surface inférieure plane telle qu'elles obturent sensiblement les trous en position d'ouverture de la trappe et pourvues de plots engagés dans les trous de sa partie inférieure, de hauteur telle qu'ils relèvent la surface inferieure plane des masses pesantes au-dessus des trous en position de fermeture de la trappe. - The cover is provided with heavy masses of flat lower surface such that they substantially close the holes in the open position of the hatch and provided with studs engaged in the holes of its lower part, of a height such that they raise the flat lower surface of the heavy masses above the holes in the closed position of the hatch.

- Les parois de ses glissières sont munies d'éléments racleurs assurant leur nettoyage.- The walls of its slides are provided with scraping elements ensuring their cleaning.

- Le fond de l'opercule est muni le long de ses faces larges de lanFuet- tes. élastiques de limitation du débit de fuite - Elle comprend une tige de commande de son déplacement, et son opercule est relié à ladite tige au voisinage de son fond.- The bottom of the cover is provided along its wide faces with lanFuets. elasticity for limiting the leak rate - It comprises a rod for controlling its movement, and its cover is connected to said rod near its bottom.

Il est décrit ci-après, à titre d'exemple et en référence aur figures du dessin annexé, une trappe de fermeture de canalisation selon l'invention. It is described below, by way of example and with reference to the figures of the accompanying drawing, a pipe closing hatch according to the invention.

La figure 1 représente la trappe en élévation du côté de ltune de ses faces larges, en position fermée. Figure 1 shows the hatch in elevation on the side of one of its wide faces, in the closed position.

La figure 2 représente la trappe en coupe par l'axe II-II de la figure 1. FIG. 2 represents the hatch in section through the axis II-II of FIG. 1.

La figure 3 représente la trappe en élévation, du côté de l'une de ses faces étroites, également en position fermée. Figure 3 shows the hatch in elevation, on the side of one of its narrow faces, also in the closed position.

La figure 4 représente une coupe selon l'axe IV-IV de la figure 3*
La figure 5 représente la trappe en élévation du côté de l'une de ses faces larges, en position ouverture.FIG. 4 represents a section along the axis IV-IV of FIG. 3 *
FIG. 5 represents the hatch in elevation on the side of one of its wide faces, in the open position.

Dans la figure 1, la trappe est représenté en position de terse- ture de la canalisation 1. Elle comprend l'opercule 2 mobile verticalement entre la position de fermeture représentée et une position d'ouver- ture, dégageant la canalisation, dans la chambre supérieure 3. In FIG. 1, the hatch is represented in the position for tearing the pipe 1. It comprises the cover 2 movable vertically between the closed position shown and an open position, releasing the pipe, in the chamber superior 3.

L'opercule comprend deux parois larges parallèles en plan de la figure, telles que 2A et deux parois étroites perpendiculaires au plan de la figure, telles que 2B, un fond 9 et une ouverture supérieure 2G. tu chambre supérieure 3 est alimentée par le raccord 4 en gaz sous une pression supérieure à la pression régnant dans la canalisation. L'oper- cule est manoeuvré à l'aide d'une tige filetée 5, qui est fixée en sen extrémité 5A par boulonnage au fond 9. La tige 5 est mobile verticalement par vissage dans l'écrou tournant du servo-moteur électrique 6. te déplacement vertical de l'opercule est guidé par quatre colonnettes telles que 7,8. The cover comprises two wide walls parallel in the plane of the figure, such as 2A and two narrow walls perpendicular to the plane of the figure, such as 2B, a bottom 9 and an upper opening 2G. the upper chamber 3 is supplied by the connector 4 with gas at a pressure greater than the pressure prevailing in the pipeline. The valve is maneuvered using a threaded rod 5, which is fixed at the end 5A by bolting to the bottom 9. The rod 5 is movable vertically by screwing in the rotating nut of the electric servo motor 6 the vertical movement of the cover is guided by four columns such as 7.8.

Le fond 9 de l'opercule est percé de trous tels que 10, Il dans lesquels s'engagent des plots telles que 12, 13 de deux masses pesantes 14, 15, de surface telle qu'elles puissent recouvrir la totalité des trous du fond. Dans la position de fermeture représentée, les plots viennent s'appuyer sur le fond 16 de la canalisation et soulèvent les masses pesantes 14 15, de sorte que le gaz en surpression provenant du raccord 4 peut s'échapper par les trous. The bottom 9 of the cover is pierced with holes such as 10, 11 in which studs such as 12, 13 of two heavy masses 14, 15 engage, with a surface such that they can cover all of the holes in the bottom . In the closed position shown, the studs come to bear on the bottom 16 of the pipe and lift the heavy masses 14 15, so that the overpressure gas from the connector 4 can escape through the holes.

Les bords inférieurs des parois larges 2A sont munis de languettes élastiques 35, 36 de limitation du débit de fuite de gaz. The lower edges of the wide walls 2A are provided with elastic tongues 35, 36 for limiting the gas leakage rate.

L'opercule est muni par ailleurs sur ses côtés étroits de becs doubles formant chicane 17, 18 engagés dans des glissières telles que 19 (voir figure 2). L'étanchéité en position d'ouverture est assurée grâce à des presse-étoupe 20, 21, 22, 23, et à des éléments racleurs en bronze en plusieurs parties 24, 25, 26, 27 disposés dans des logements 28, 29, 30, 31 de l'enceinte de jonction 32 entre la tuyauterie et la chambre supérieure 3, et repoussés contre l'opercule par des ressorts telles que 33, 34 (figure 4). The cover is also provided on its narrow sides with double beaks forming a baffle 17, 18 engaged in slides such as 19 (see FIG. 2). Sealing in the open position is ensured by cable glands 20, 21, 22, 23, and by scraper elements in bronze in several parts 24, 25, 26, 27 arranged in housings 28, 29, 30 , 31 of the junction enclosure 32 between the piping and the upper chamber 3, and pushed against the cover by springs such as 33, 34 (FIG. 4).

Le fonctionnement de la trappe est le suivant
En position d'ouverture, représentée en figure 5, la tige 5 est relevée, du fait de son vissage dans l'écrou du servo-moteur électrique 6, et l'opercule est également relevé, laissant libre la section droite de la tuyauterie 1. Le gaz en surpression pénétre par le raccord 4 dans la chambre 3. Une première partie pénétre par l'ouverture supérieure 2C à l'intérieur de l'opercule, mais ne peut en déboucher, les trous 10, 11 de son fond étant bouchés par les masses pesantes 12, 13.The hatch works as follows
In the open position, shown in Figure 5, the rod 5 is raised, due to its screwing in the nut of the electric servo-motor 6, and the cover is also raised, leaving free the cross section of the pipe 1 The overpressure gas penetrates through the connector 4 into the chamber 3. A first part penetrates through the upper opening 2C inside the cover, but cannot emerge from it, the holes 10, 11 at its bottom being blocked. by the heavy masses 12, 13.

L'autre partie du gaz pénétrant dans la chambre 3 descend de part et d'autre des parois 2B, mais ne peut s'écouler dans la tuyauterie, du fait que les becs 17, 18 sont en face des presse-étoupe 20, 21. The other part of the gas entering the chamber 3 descends on either side of the walls 2B, but cannot flow into the piping, because the nozzles 17, 18 are opposite the cable glands 20, 21 .

Lorsque l'on veut fermer la tuyauterie, on commande la mise en marche du servo-moteur 6. Celui-ci met en rotation l'écrou du servomoteur électrique, de sorte que la tige 5 descend, entratnant l'oper- cule, dont le fond vient s'appliquer contre le fond de la tuyauterie, comme représenté en figure 1 et 2. Les plots 12, 13 sont soulevés par le fond de la tuyauterie et viennent démasquer les trous 10, 11 permettant à un faible débit du gaz de s'échapper dans la tuyauterie, sur les petits
Côtés de l'opercule et par delà les languettes élastiques 35, 36 des parois larges.When the piping is to be closed, the servo motor 6 is started. The latter actuates the nut of the electric servomotor in rotation, so that the rod 5 descends, driving the operator, whose the bottom is applied against the bottom of the piping, as shown in FIGS. 1 and 2. The studs 12, 13 are raised by the bottom of the piping and come to unmask the holes 10, 11 allowing a low flow of gas from escape in the piping, on small
Sides of the cover and beyond the elastic tabs 35, 36 of the wide walls.

Par ailleurs, les becs 17, 18 étant au-dessous des presseétoupe 20, 21 et des éléments racleurs 24, 25, 26, 27, le gaz s'écoule également entre ces becs, et il s'établit un débit de fuite dans les glissières 19, comme représenté en figure 2. Les éléments racleurs nettoient les côtés de l'opercule des poussières qui s'y seraient déposées. Furthermore, the spouts 17, 18 being below the cable glands 20, 21 and the scraper elements 24, 25, 26, 27, the gas also flows between these spouts, and a leakage rate is established in the slides 19, as shown in FIG. 2. The scraping elements clean the sides of the cover from the dust which would have settled there.

Celles-ci sont entralnées par le débit de fuite dans la canalisation.These are entrained by the leakage rate in the pipeline.

L'étanchéité entre les sections de la tuyauterie de part et d'autre de l'opercule est ainsi assurée, au prix d'un débit de fuite relativement faible.The seal between the sections of the piping on either side of the cover is thus ensured, at the cost of a relatively low leakage rate.

Comme on l'a vu précédemment, le débit de fuite de gaz en position d'ouverture de la trappe est pratiquement nul, du fait de la fermeture des trous de fond de l'opercule par les masses pesantes et de la présence des presse-étoupe en face des becs latéraux de l'opercule. As we have seen previously, the gas leakage rate in the hatch open position is practically zero, due to the closing of the bottom holes of the cover by the heavy masses and the presence of pressers. tow opposite the lateral nozzles of the cover.

Bien que la trappe de fermeture qui vient d'être décrite en référence aux figures du dessin paraisse la forme de réalisation préférable de l'invention, on comprendra que diverses modifications peuvent lui être apportées sans sortir du cadre de l'invention, certains de ses organes pouvant être remplacés par d'autres qui toueraient le même rôle technique.  Although the closing hatch which has just been described with reference to the figures of the drawing appears to be the preferable embodiment of the invention, it will be understood that various modifications can be made to it without departing from the scope of the invention, some of its bodies which may be replaced by others which would have the same technical role.

Claims (6)

REVENDICATIONS 1/ Trappe de fermeture d'une canalisation de section droite rectangulaire (1) pour le transport d'un produit solide pulvérulent en suspension dans un gaz, comprenant un opercule (2) coulissant dans des glissières (19), caractérisée en ce que celui-ci comporte deux faces larges (2A) perpendiculaires à l'axe de la canalisation, et deux faces étroites (2B) parallèles à cet axe, définissant un espace interne, et en ce que ce dernier est relié à des moyens (4) d'admission d'un gaz sous une pression un peu supérieure à celle régnant dans la canalisation, et à des moyens (17, 18, 10, 11, 35, 36) permettant des fuites de ce gaz dans la canalisation entre le fond de l'opercule et la paroi de la canalisation contre laquelle ce fond vient s'appliquer en position de fermeture, et entre les parois latérales et les deux faces étroites de l'opercule.1 / hatch for closing a pipe of rectangular cross section (1) for the transport of a powdery solid product suspended in a gas, comprising a cover (2) sliding in slides (19), characterized in that -this has two wide faces (2A) perpendicular to the axis of the pipe, and two narrow faces (2B) parallel to this axis, defining an internal space, and in that the latter is connected to means (4) d admission of a gas at a pressure slightly higher than that prevailing in the pipeline, and to means (17, 18, 10, 11, 35, 36) allowing leaks of this gas in the pipeline between the bottom of the 'cover and the wall of the pipe against which this bottom is applied in the closed position, and between the side walls and the two narrow faces of the cover. 2/ Trappe selon la revendication 1, caractérisée en ce que la partie inférieure de l'opercule est muni de trous (10, 11) permettant l'écou- lement du gaz sous pression supérieure en position de fermeture, mais s'opposant à celui-ci en position d'ouverture.2 / hatch according to claim 1, characterized in that the lower part of the cover is provided with holes (10, 11) allowing the flow of gas under higher pressure in the closed position, but opposing that -this in the open position. 3/ Trappe selon la revendication 2, caractérisée en ce que l'opercule est muni de masses pesantes (14, 15j de surface inférieure plane telle qu'elles obturent sensiblement les trous en position d'ouverture de la trappe et pourvues de plots (12, 13) engagés dans les trous de sa partie inférieure, de hauteur telle qu'ils relèvent la surface inférieure plane des masses pesantes au-dessus des trous en position de fermeture de la trappe.3 / hatch according to claim 2, characterized in that the cover is provided with heavy masses (14, 15j of planar lower surface such that they substantially close the holes in the open position of the hatch and provided with studs (12 , 13) engaged in the holes of its lower part, of a height such that they raise the flat lower surface of the heavy masses above the holes in the closed position of the hatch. 4/ Trappe selon l'une des revendications 1 à 3, caractérisée en ce que les parois de ses glissières sont munies d'éléments racleurs (24, 25, 26, 27) assurant leur nettoyage.4 / hatch according to one of claims 1 to 3, characterized in that the walls of its slides are provided with scraper elements (24, 25, 26, 27) ensuring their cleaning. 5/ Trappe selon l'une des revendications 1 à 4, caractérisée en ce que le fond de l'opercule est muni le long de ses faces larges de languettes élastiques de limitation du débit de fuite (35, 36).5 / hatch according to one of claims 1 to 4, characterized in that the bottom of the cover is provided along its wide faces with elastic tabs for limiting the leak rate (35, 36). 6/ Trappe selon l'une des revendications 1 à 5, comportant une tige (5) de commande de son déplacement, caractérisée en ce que son opercule est relié (5A) à ladite tige au voisinage de son fond. 6 / hatch according to one of claims 1 to 5, comprising a rod (5) for controlling its movement, characterized in that its cover is connected (5A) to said rod in the vicinity of its bottom.
FR8209222A 1982-05-27 1982-05-27 Valve for gas suspended powder - is rectangular hollow section slide and gas fed inside escapes between edge and invert Granted FR2527567A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR8209222A FR2527567A1 (en) 1982-05-27 1982-05-27 Valve for gas suspended powder - is rectangular hollow section slide and gas fed inside escapes between edge and invert

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR8209222A FR2527567A1 (en) 1982-05-27 1982-05-27 Valve for gas suspended powder - is rectangular hollow section slide and gas fed inside escapes between edge and invert

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FR2527567A1 true FR2527567A1 (en) 1983-12-02
FR2527567B1 FR2527567B1 (en) 1984-12-14

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3206162A (en) * 1962-12-28 1965-09-14 Combustion Eng Double gate valve
US3256897A (en) * 1963-04-19 1966-06-21 Sydney E Carlton Method and means for flushing scale and sand in gate valves
US3636971A (en) * 1970-09-25 1972-01-25 Mosser Ind Gate valve
FR2207251A1 (en) * 1972-11-17 1974-06-14 Bbc Sulzer Turbomaschinen
US3918471A (en) * 1973-05-23 1975-11-11 Shire Bernard S Gate valve device

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3206162A (en) * 1962-12-28 1965-09-14 Combustion Eng Double gate valve
US3256897A (en) * 1963-04-19 1966-06-21 Sydney E Carlton Method and means for flushing scale and sand in gate valves
US3636971A (en) * 1970-09-25 1972-01-25 Mosser Ind Gate valve
FR2207251A1 (en) * 1972-11-17 1974-06-14 Bbc Sulzer Turbomaschinen
US3918471A (en) * 1973-05-23 1975-11-11 Shire Bernard S Gate valve device

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