FR2475694A1 - Liquid fuel burner feed safety shut off - has pressure switch in fuel overflow return pipe which actuates safety valve on burner - Google Patents
Liquid fuel burner feed safety shut off - has pressure switch in fuel overflow return pipe which actuates safety valve on burner Download PDFInfo
- Publication number
- FR2475694A1 FR2475694A1 FR8002999A FR8002999A FR2475694A1 FR 2475694 A1 FR2475694 A1 FR 2475694A1 FR 8002999 A FR8002999 A FR 8002999A FR 8002999 A FR8002999 A FR 8002999A FR 2475694 A1 FR2475694 A1 FR 2475694A1
- Authority
- FR
- France
- Prior art keywords
- burner
- pressure switch
- pump
- flow
- safety
- 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.)
- Withdrawn
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N5/00—Systems for controlling combustion
- F23N5/24—Preventing development of abnormal or undesired conditions, i.e. safety arrangements
- F23N5/245—Preventing development of abnormal or undesired conditions, i.e. safety arrangements using electrical or electromechanical means
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23K—FEEDING FUEL TO COMBUSTION APPARATUS
- F23K5/00—Feeding or distributing other fuel to combustion apparatus
- F23K5/02—Liquid fuel
- F23K5/14—Details thereof
- F23K5/16—Safety devices
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Feeding And Controlling Fuel (AREA)
Abstract
Description
La présente invention concerne la sécurité contre les risques de fuite pouvant survenir sur les canalisations hydrauliques reliant une pospe de transfert ,ou un brûleur à pulvérisation mécanique de fuel,à une cuve de stockage . The present invention relates to safety against the risk of leakage which may occur on the hydraulic pipes connecting a transfer station, or a burner with mechanical fuel oil spraying, to a storage tank.
Les dispositifs connus sont très spécifiques et doivent s'additionner, pour obtenir une protection maximum sur les doux tuyauteries,aspiration et retour,sur la pompe servant au fonctionnement du brûleur à pulvérisation mécanique,ainsi qu dans les installations avec pompe de transfert
Le dispositif,suivant l'invention,provoque l'arrêt du brûleur à pul vérisation mécanique,quelques secondes après l'apparition d'une fuite, en tout endroit du circuit,pompe ou tuyauteries d'aspiration ou de retour,évitant ainsi au mazout de se répandre dangereusement au point de fuite.De même,sur une installation avec pompe de transfert,le dispotif,suivant l'invention,permet l'arrêt de 1 a pompe quelques secondes après l'apparition d'une fuite sur les canalisations d'aspiration et de refoulement ou sur la pompe elle-même,ou par manque de liquide & transférer,évitant ainsi la destruction de la dite pomp. par un fonctionnement à sec résultant de l'épuisement du réservoir.The known devices are very specific and must be added together, to obtain maximum protection on the soft piping, suction and return, on the pump used for the operation of the mechanical spray burner, as well as in installations with transfer pump.
The device, according to the invention, causes the burner to stop mechanical pulverization, a few seconds after the appearance of a leak, anywhere in the circuit, pump or suction or return pipes, thus avoiding fuel oil. spreading dangerously at the point of leakage. Similarly, on an installation with transfer pump, the device, according to the invention, allows the pump to stop 1 a few seconds after the appearance of a leak on the pipes of 'suction and discharge or on the pump itself, or by lack of liquid & transfer, thus avoiding the destruction of said pump. by dry running resulting from the exhaustion of the tank.
Le dispositif,objet de l'invention,comporte un moyen de freinage du débit de fuel,à l'extrémité côté ouve de la canalisation de retour,afin de créer artificiellement une légère surpression dans toute cette conduite. Selon une réalisation de l'invention,ce moyen est un robinet à vis pointeau conçu de maniére à permettre un règlage du débit de liquide,sans toutefois jamais pouvoir l'arrêter complètement. The device, object of the invention, comprises a means of braking the flow of fuel, at the open side end of the return pipe, in order to artificially create a slight overpressure in this entire pipe. According to an embodiment of the invention, this means is a needle screw valve designed to allow adjustment of the liquid flow rate, without however ever being able to stop it completely.
Puis un moyen de détection transmettra l'effet de cette surpression à la botte de sécurité du brûleur à pulvérisation mécanique. suivant une rS- àlisation de l'invention,ce moyen est un pressostat réglable de O à I bar qui peut être placé en tout endroit de la canalisation de retour,suivant les exigeances de chaque installation. Par son réglage très précis,ainsi que par le réglage de la vis-pointeau,est obtenu l'enclenchement du contact de ce pressostat dès l'apparition d'une légère surpression. Then a detection means will transmit the effect of this overpressure to the safety boot of the mechanical spray burner. according to an RS of the invention, this means is a pressure switch adjustable from 0 to I bar which can be placed anywhere in the return pipe, according to the requirements of each installation. By its very precise adjustment, as well as by the adjustment of the needle screw, is obtained the engagement of the contact of this pressure switch upon the appearance of a slight overpressure.
Ce contact sera branché électriquement en série avec la cellule qui fait partie du circuit ########## normal de contrtle de l'appareil,et le dit contact agira ainsi sur la botte de sécurité du brûleur
L'apparition d'une fuite à tout endroit de l'installation hydraulique provoquera la baisse du pressostat,et la rupture du circuit de cellule par son contact .Cette rupture de plus de 16 secondes produira l'arrêt du fonctionnement du brûleur et de sa pompe,l'arrêt du débit de mazout dans les canalisations,et par suite,arrtt de l'écoulement du liquide au point de fuite,avec limitation de toutes les conséquences possibles. This contact will be electrically connected in series with the cell which is part of the normal ########### control circuit of the appliance, and the said contact will thus act on the safety boot of the burner
The appearance of a leak anywhere in the hydraulic system will cause the pressure switch to drop, and the cell circuit to break through its contact. This break of more than 16 seconds will stop the operation of the burner and its pump, stopping the flow of fuel oil in the pipes, and consequently stopping the flow of liquid at the point of leakage, with limitation of all possible consequences.
Cette temporisation,d'environ seize secondes,existant sur toue les modèles de bottes de sécurité,permet aisément la mise en surpression de la ca@alisation à l'instant de chaque mise en route du brûleur,et ainsi, par la fermeture du contact du pressostat,autorise la continuité de fonctionnement . This time delay, of approximately sixteen seconds, existing on all the models of safety boots, allows easily the overpressure of the ca @ alisation at the instant of each start-up of the burner, and thus, by closing the contact. of the pressure switch, allows continuity of operation.
Selon une autre réalisation de l'invention ,c'est uniquement le fonc
tionnement dune pompe hydraulique de transfert qui est contrôlé avec la
botte de sécurité initialement prévue pour le fonctionnement des brûleurs
à pulvérisation mécanique .Dans ce cas,la cellule du circuit de contrôle
est remplacée par une résistance de valeur moyenne équivalente.Le pres-
sostat étant installé sur la canalisation de refoulement,et suivant le
même principe que précédemment,grace a un léger étranglement de cette
canalisation,la fermeture du pressostat dans un temps inférieur à 16
secondes est largement obtenu après la mise en route,autorisant ainsi
la continuité du fonctionnement1 on assurant notamment à la pompe une
rotation en milieu liquide,évitant sa mise hors service qui surviendrait
assez rapidement si elle derais tourner à sec
Le dessin annexé illustre,à titre d'exemple,un mode de réalisation
du dispositif conforme à la présente invention : tel que représenté,le
fuel de la cuve 1,aspiré à travers la conduite 2,munie d'une vanne police @
3 et d'une vanne à passage direct 4,arrive au brûleur 5 par l'intermé
diaire de sa pompe 6; l'excédent de mazout est renvoyé a la cuve I par
la conduite de retour 7,munie d'un clapet anti-retour 8 et du robinet à
vis-pointeau de freinage de débit 9 * La faible pression obtenue dans
cette tuyauterie de retour 7,largement I6 secondes après la mise en rou
te du brûleur 5,et pendant tout son fonctionnement normal,est transmise
par le té 9 au pressostat 10,fermant ainsi son contact 11 ;; G e 1 u i
ci,relié en série avec la cellule 12 par l'intermédiaire des 2 fils elec-
triques I3 et 14,rétablit normalement le circuit de contrôle an bot
tier de sécuti@é 15 du brûleur 5,et assure la continuité de son fono-
tionnement. Si par costre,un incident ou fuite se produit en un point
quelconque du circuit hydraulique,il s'y produit une baisse de pression
qui décharge le pressostat IO,lequel par son interrupteur 11,coupe
alors le courant dans le bottier de sécurité,ce qui a pour effet d'ar-
roter immédiatement le fonctionnement de la pompe.According to another embodiment of the invention, it is only the function
operation of a hydraulic transfer pump which is controlled with the
safety boot originally intended for burner operation
with mechanical spraying. In this case, the control circuit cell
is replaced by a resistor of equivalent average value.
sostat being installed on the discharge line, and according to the
same principle as before, thanks to a slight constriction of this
pipeline, closing the pressure switch in less than 16
seconds is largely obtained after start-up, thus authorizing
continuity of operation1 ensuring in particular that the pump
rotation in liquid medium, avoiding its deactivation which would occur
fairly quickly if it should run dry
The accompanying drawing illustrates, by way of example, an embodiment
of the device according to the present invention: as shown, the
fuel from tank 1, sucked through line 2, fitted with a police valve @
3 and a direct flow valve 4, arrives at the burner 5 via
diary of its pump 6; the excess fuel oil is returned to tank I by
the return line 7, fitted with a non-return valve 8 and the tap
flow brake screw needle 9 * The low pressure obtained in
this return piping 7, largely I6 seconds after putting into operation
te of the burner 5, and during all its normal operation, is transmitted
by the tee 9 at the pressure switch 10, thus closing its contact 11 ;; G e 1 yes
ci, connected in series with cell 12 via the 2 electric wires
triques I3 and 14, normally restores the an bot control circuit
tier of sequence 15 of burner 5, and ensures the continuity of its function
operation. If by costre, an incident or leak occurs at a point
any of the hydraulic circuit, there is a drop in pressure
which discharges the pressure switch IO, which by its switch 11, cuts
then the current in the safety boot, which has the effect of
immediately rotate the pump operation.
Le dispositif objet de l'invention,peut être utilisé comme complé-
ment important pour la sécurité des personnes sur toutes installations
de chauffage,industrielles ou domestiques,utilisant des brtleure à pul
vérisation mécanique à fuel,alimentés par canalisations d'aspiration et
retour,avec ou sans cuve en chargesavec ou sans nourrice et pompe de transfert The device which is the subject of the invention can be used as a supplement
important for the safety of people on all installations
heating, industrial or domestic, using pulp burners
mechanical fuel oil control, supplied by suction pipes and
return, with or without tank in charge with or without nurse and transfer pump
Claims (7)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR8002999A FR2475694A1 (en) | 1980-02-11 | 1980-02-11 | Liquid fuel burner feed safety shut off - has pressure switch in fuel overflow return pipe which actuates safety valve on burner |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR8002999A FR2475694A1 (en) | 1980-02-11 | 1980-02-11 | Liquid fuel burner feed safety shut off - has pressure switch in fuel overflow return pipe which actuates safety valve on burner |
Publications (1)
Publication Number | Publication Date |
---|---|
FR2475694A1 true FR2475694A1 (en) | 1981-08-14 |
Family
ID=9238463
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR8002999A Withdrawn FR2475694A1 (en) | 1980-02-11 | 1980-02-11 | Liquid fuel burner feed safety shut off - has pressure switch in fuel overflow return pipe which actuates safety valve on burner |
Country Status (1)
Country | Link |
---|---|
FR (1) | FR2475694A1 (en) |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
NL279286A (en) * | ||||
FR1266280A (en) * | 1960-08-22 | 1961-07-07 | Raydor France S A R L | Oil distribution protection device |
USRE28013E (en) * | 1972-06-26 | 1974-05-21 | Safety switch and circuit por oil-burhing furnace |
-
1980
- 1980-02-11 FR FR8002999A patent/FR2475694A1/en not_active Withdrawn
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
NL279286A (en) * | ||||
FR1266280A (en) * | 1960-08-22 | 1961-07-07 | Raydor France S A R L | Oil distribution protection device |
USRE28013E (en) * | 1972-06-26 | 1974-05-21 | Safety switch and circuit por oil-burhing furnace |
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ST | Notification of lapse |