FR2609529A1 - Improvement to the feed for fuel-burning torches - Google Patents
Improvement to the feed for fuel-burning torches Download PDFInfo
- Publication number
- FR2609529A1 FR2609529A1 FR8700160A FR8700160A FR2609529A1 FR 2609529 A1 FR2609529 A1 FR 2609529A1 FR 8700160 A FR8700160 A FR 8700160A FR 8700160 A FR8700160 A FR 8700160A FR 2609529 A1 FR2609529 A1 FR 2609529A1
- Authority
- FR
- France
- Prior art keywords
- fuel
- valve
- ball
- valve seat
- seat body
- 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
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D11/00—Burners using a direct spraying action of liquid droplets or vaporised liquid into the combustion space
- F23D11/10—Burners using a direct spraying action of liquid droplets or vaporised liquid into the combustion space the spraying being induced by a gaseous medium, e.g. water vapour
- F23D11/101—Burners using a direct spraying action of liquid droplets or vaporised liquid into the combustion space the spraying being induced by a gaseous medium, e.g. water vapour medium and fuel meeting before the burner outlet
- F23D11/102—Burners using a direct spraying action of liquid droplets or vaporised liquid into the combustion space the spraying being induced by a gaseous medium, e.g. water vapour medium and fuel meeting before the burner outlet in an internal mixing chamber
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D11/00—Burners using a direct spraying action of liquid droplets or vaporised liquid into the combustion space
- F23D11/36—Details, e.g. burner cooling means, noise reduction means
Abstract
Description
La présente invention a pour objet une torche à carburant utilisée par exemple dans une chaudière au fioul de centrale thermique. The present invention relates to a fuel torch used for example in a fuel oil boiler of a thermal power plant.
Elle vise plus particulièrement une torche du type connu comportant une culasse dans laquelle est monté un distributeur percé axialement d'un alésage d'alimentation en carburant et à l'arrière duquel est vissé un corps de siège de valve comportant un siège de valve circulaire contre lequel prend appui une bille sphérique de valve sollicitée élastiquement à l'encontre de la force qu'exerce sur elle le carburant sous pression traversant axialement le corps de siège de valve. It relates more particularly to a torch of the known type comprising a cylinder head in which is mounted a distributor pierced axially with a fuel supply bore and at the rear of which is screwed a valve seat body comprising a circular valve seat against which is supported by a spherical valve ball urged elastically against the force exerted on it by the pressurized fuel passing axially through the valve seat body.
Dans ce type de valve connu, l'étanchéité entre le carburant et l'air de pulvérisation se fait par la coopération d'une bille sphérique métallique avec un siège de valve circulaire également métallique, constitué par l'arête vive du perçage axial du corps de siège de valve. In this type of known valve, the seal between the fuel and the atomizing air is effected by the cooperation of a metallic spherical ball with a circular valve seat also metallic, constituted by the sharp edge of the axial bore of the body. valve seat.
L'étanchéité ainsi réalisée est insuffisante et la surpression de l'air sur le carburant entraîne la formation de poches d'air en amont dans la tuyauterie d'alimentation en carburant. La présence de ces poches d'air provoque un mauvais fonctionnement de la torche et un mauvais rendement de la chaudière sur laquelle elle est montée. The seal thus produced is insufficient and the excess pressure of the air on the fuel results in the formation of air pockets upstream in the fuel supply piping. The presence of these air pockets causes a malfunction of the torch and poor performance of the boiler on which it is mounted.
On a proposé d'améliorer l'étanchéité de ce type de torches connues en effectuant un fraisage conique à 30 de l'extrémité du perçage axial du corps de siège de valve puis en réalisant un rodage de cette portée conique avec la bille et une pâte à roder. It has been proposed to improve the tightness of this type of known torches by carrying out a conical milling at 30 from the end of the axial bore of the valve seat body and then by running in this conical seat with the ball and a paste. to break in.
Malgré cette opération de rodage d'une durée d'environ deux heures par torche, le résultat obtenu est insuffisant et des défauts d'étanchéité subsistent nécessitant un nouveau démontage et une nouvelle opération de rodage. Despite this running-in operation lasting approximately two hours per torch, the result obtained is insufficient and leaks remain, necessitating a new disassembly and a new running-in operation.
Dans le but de remédier à ces inconvénients, la présente invention propose une torche du type mentionné plus haut caractérisé en ce que le corps de siège de valve comporte un évidement cylindrique dans lequel est monté un joint d'étanchéité torique sur lequel prend appui la bille sphérique de valve. In order to remedy these drawbacks, the present invention provides a torch of the type mentioned above, characterized in that the valve seat body has a cylindrical recess in which is mounted an O-ring seal on which the ball bears. spherical valve.
On décrira maintenant en détail l'invention en se reportant aux dessins annexés sur lesquels
- la figure 1 est une vue en coupe axiale d'une torche à
carburant conforme à l'état de la technique ; et
- la figure 2 est une vue à plus grande échelle d'un détail de la
torche de la figure 1 modifié selon les enseignements de la
présente invention.The invention will now be described in detail, with reference to the accompanying drawings on which
- Figure 1 is an axial sectional view of a torch to
state of the art fuel; and
- Figure 2 is an enlarged view of a detail of the
torch of Figure 1 modified according to the teachings of the
present invention.
On a représenté à la figure 1 une torche à carburant 10 comportant une culasse 12 fermée à sa partie arrière par un bouchon 14 et qui se prolonge à sa partie avant par un support 16 terminé par un nez de pulvérisation 18. FIG. 1 shows a fuel torch 10 comprising a cylinder head 12 closed at its rear part by a plug 14 and which is extended at its front part by a support 16 terminated by a spraying nose 18.
La culasse 12 est un corps hexagonal creux dans lequel sont montés un distributeur 20 et un corps de siège de valve 22 vissé à l'arrière du distributeur 20. The cylinder head 12 is a hollow hexagonal body in which a distributor 20 is mounted and a valve seat body 22 screwed to the rear of the distributor 20.
Le corps de siège de valve 22 comporte un perçage axial 24 permettant l'alimentation en carburant du distributeur 20. The valve seat body 22 has an axial bore 24 allowing the fuel supply to the distributor 20.
Le carburant pénètre dans la culasse par un raccord 26 puis passe par des trous radiaux 28 du bouchon 14, un filtre 30 monté dans un porte-filtre 32, et un gicleur "Solex" 34 pour enfin pénétrer dans le perçage axial 24. The fuel enters the cylinder head through a connector 26 then passes through radial holes 28 of the plug 14, a filter 30 mounted in a filter holder 32, and a "Solex" nozzle 34 to finally penetrate the axial bore 24.
Le carburant traverse le corps de siège de valve 22 pour pénétrer dans le distributeur 20 dans lequel il sera mélangé à l'air de pulvérisation. Le carburant pénètre dans un alésage axial 36 du distributeur 20, passe par des perçages radiaux 38, et débouche dans des perçages inclinés 40 dans lesquels il est mélangé à l'air. The fuel passes through the valve seat body 22 to enter the distributor 20 where it will be mixed with the atomizing air. The fuel enters an axial bore 36 of the distributor 20, passes through radial holes 38, and emerges in inclined holes 40 in which it is mixed with air.
L'air de pulvérisation pénètre dans la culasse par un raccord 42 et passe dans les perçages inclinés par l'extrémité arrière de ceux-ci. The spraying air enters the cylinder head through a connector 42 and passes through the holes inclined by the rear end thereof.
La torche comporte enfin une bille sphérique de valve 44 montée libre dans l'alésage 36 du distributeur 20. La bille 44 coopère avec un siège de valve circulaire 46 constitué par l'arête vive du perçage axial 24 du corps de siège de valve 22. La bille de valve 44 est sollicitée élastiquement en appui contre le siège circulaire 46 par un ressort de compression 48 monté dans l'alésage axial 36. La valve à bille constituée du corps 22 de la bille 44 et du ressort 48 est fermée tant que l'effort exercé par le carburant sous pression sur la bille 44 est inférieur à l'effort de précontrainte qui lui est appliqué par le ressort 48. The torch finally comprises a spherical valve ball 44 mounted freely in the bore 36 of the distributor 20. The ball 44 cooperates with a circular valve seat 46 formed by the sharp edge of the axial bore 24 of the valve seat body 22. The valve ball 44 is elastically urged to bear against the circular seat 46 by a compression spring 48 mounted in the axial bore 36. The ball valve consisting of the body 22 of the ball 44 and the spring 48 is closed as long as the the force exerted by the fuel under pressure on the ball 44 is less than the prestressing force applied to it by the spring 48.
Le perfectionnement selon l'invention représenté à la figure 2 consiste à monter un joint d'étanchéité torique 50 dans un évidement cylindrique 52 formé à la portée avant du corps de siège de valve 22, c'est à dire dans l'extrémité libre de ce dernier qui est en vis-à-vis de la portée arrière du distributeur 20. The improvement according to the invention shown in FIG. 2 consists in mounting an O-ring seal 50 in a cylindrical recess 52 formed within the front range of the valve seat body 22, that is to say in the free end of the latter which is opposite the rear range of the distributor 20.
L'évidement 52 est constitué par un lamage usiné dans le corps de siège de valve 22 au moyen d'une fraise cylindrique dont le diamètre externe correspond au diamètre externe du point torique 50. The recess 52 is formed by a countersink machined in the valve seat body 22 by means of a cylindrical cutter whose external diameter corresponds to the external diameter of the O-point 50.
Afin de s'assurer que le joint 50 n'est pas écrasé lors du montage de la torche, un jeu "j" est par construction maintenu entre le fond 54 du distributeur et la face avant 56 du corps de siège de valve 22. In order to ensure that the seal 50 is not crushed during assembly of the torch, a clearance "j" is by construction maintained between the bottom 54 of the distributor and the front face 56 of the valve seat body 22.
Le joint torique peut avantageusement être réalisé en "viton", c'est-à-dire dans un matériau résistant au caractère agressif du carburant par exemple constitué par du fioul. The O-ring can advantageously be made from "viton", that is to say from a material resistant to the aggressive nature of the fuel, for example consisting of fuel oil.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR8700160A FR2609529B1 (en) | 1987-01-09 | 1987-01-09 | IMPROVEMENT IN THE FEEDING OF FUEL TORCHES |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR8700160A FR2609529B1 (en) | 1987-01-09 | 1987-01-09 | IMPROVEMENT IN THE FEEDING OF FUEL TORCHES |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| FR2609529A1 true FR2609529A1 (en) | 1988-07-15 |
| FR2609529B1 FR2609529B1 (en) | 1990-06-22 |
Family
ID=9346775
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR8700160A Expired - Lifetime FR2609529B1 (en) | 1987-01-09 | 1987-01-09 | IMPROVEMENT IN THE FEEDING OF FUEL TORCHES |
Country Status (1)
| Country | Link |
|---|---|
| FR (1) | FR2609529B1 (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1334747A (en) * | 1919-06-13 | 1920-03-23 | Geyer Jakob | Fluid-fuel burner |
| US2254123A (en) * | 1939-03-06 | 1941-08-26 | Swindell Brothers Inc | Oil burner |
| US2896663A (en) * | 1955-02-28 | 1959-07-28 | Carl M Mena | Check valve with valve seat of resilient material |
| FR1366565A (en) * | 1963-08-22 | 1964-07-10 | Method and device for heating ceramic furnaces with upper chamber | |
| US3256917A (en) * | 1962-02-01 | 1966-06-21 | Baumann Kurt | Nonreturn valve with pressure release |
| US3548869A (en) * | 1968-03-04 | 1970-12-22 | Anderson Greenwood & Co | Soft seated valve |
| FR2288530A1 (en) * | 1974-10-23 | 1976-05-21 | Vebo Institution Readaptation | Evacuation under sterilization of reusable aspirator vessel - prior to use for drainage of surgical wounds involves using sterilisation heat to expand and force out excess air |
-
1987
- 1987-01-09 FR FR8700160A patent/FR2609529B1/en not_active Expired - Lifetime
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1334747A (en) * | 1919-06-13 | 1920-03-23 | Geyer Jakob | Fluid-fuel burner |
| US2254123A (en) * | 1939-03-06 | 1941-08-26 | Swindell Brothers Inc | Oil burner |
| US2896663A (en) * | 1955-02-28 | 1959-07-28 | Carl M Mena | Check valve with valve seat of resilient material |
| US3256917A (en) * | 1962-02-01 | 1966-06-21 | Baumann Kurt | Nonreturn valve with pressure release |
| FR1366565A (en) * | 1963-08-22 | 1964-07-10 | Method and device for heating ceramic furnaces with upper chamber | |
| US3548869A (en) * | 1968-03-04 | 1970-12-22 | Anderson Greenwood & Co | Soft seated valve |
| FR2288530A1 (en) * | 1974-10-23 | 1976-05-21 | Vebo Institution Readaptation | Evacuation under sterilization of reusable aspirator vessel - prior to use for drainage of surgical wounds involves using sterilisation heat to expand and force out excess air |
Also Published As
| Publication number | Publication date |
|---|---|
| FR2609529B1 (en) | 1990-06-22 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| ST | Notification of lapse |