DE1600913A1 - Valve - Google Patents

Description

8000 Munich 23,

Dipl.-l ng. R. H. Bahr

Dlpl.-PhyS. Eduard BetZler Telephone:

Dipl.-Ing. W. Herrmann-Trentepohl ³⁹⁸⁰¹³

^r . ■ Telegram address:

PATENT LAWYERS 'Babetzpat Munich

Telex 05 245 62

1 & 0 0913 bank accounts:

Bayrische Vereinsbank Munich 952287 Dresdner Bank AQ Herno 202436 ■ Postal check account Dortmund 558 68

Π. JAN. 1963

"" F .: A 18 323 He / Pa

please indicate in the answer

Please send a letter to:

Munich

Societe d ^f Exploitation des Materiels Hispano-Suiza Bois-Colombes, France

Valve

Priority: France, February 14, 1966

The invention relates generally to the valves for installation in a flow circuit which connects a source of a fluid under high pressure with a receiving system to be fed with this fluid. .Derartige valves comprise at least one closure member that can occupy a Schiießungsstellung in which it is held substantially printed by the action of a closing mechanism on its seat and an opening position in which das.Verschlußglied \ by an opening mechanism from its seat removed ^V> will. Of such valves, the invention relates in particular, if not exclusively, to those in which one of the two above mechanisms (closing mechanism or opening mechanism) is formed by a servomechanism - in particular a servomechanism

New UnteriagOTlflÄ- "PÄes.2rfjrfi ^ att3deaAndeFungsge3.v.4.e.li - 2 -

with electromagnet.

The invention aims in particular to form such valves so that they better than before the various Meet the requirements of practice, mainly with regard to their operational safety.

For this purpose, in such valves with a valve body subdivided into two chambers, one of which is called the "upstream chamber", runs through a line for supplying the high-pressure medium and the other, called the "downstream chamber", through an exhaust line with the Receiving system is connected, whereby these two hammers are connected by a passage, rather ddt act together with a locking member, the opening of which is generated by the opening mechanism by a translation "movement against the" effect of pressing the locking member on its cits Closing mechanism takes place, or its closure produced by the closing mechanism takes place through a translation movement against the action of the opening mechanism that removes the closure member from its seat, according to the invention a hermetic bellows is provided in the upstream chamber between the closure member and the inner wall of this chamber, so that At least part of the surfaces of the closure member is isolated to define a chamber, with at least one line being formed in the closure member which connects this chamber / with the downstream Kainner continuously and in any position of the closure member. _O

Thanks to this design, the forces to be generated by the closing mechanism and the opening mechanism can be proportionate have small jerte, so that the benefits

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these mechanisms are also relatively small and these keehanisms take up little space and a little Can have weight.

The invention is explained below with reference to the drawing voltage, for example.

Fig. 1 is an axial section of a first embodiment of a valve according to the invention.

Iig. 2 shows in the same representation as Pig. 1 according to Another embodiment of the invention designed valve.

Sig-T-3 In general, such a valve is used either in the unlocked position or in the open position, whereby depending on the type of receiving system it is either normally in the closed position and can only be opened occasionally if the receiving system only works occasionally, or are normally in the open position and can only be closed occasionally if the receiving system is only switched off occasionally.

Which of the two mechanisms, i.e. H. the opening mechanism or the locking mechanism, which is formed by a servomechanism with an electromagnet, is then the lu mechanism, which only works occasionally. .

'. Therefore the valve is normally closed and only Occasionally-opened, the locking mechanism is through formed elastic return devices, while the l'ffnungsiiiechaaismus is formed by the servomechanism with electromagnet.

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In the opposite pall, i.e. H. when the valve is normally open and only occasionally is closed, the opening mechanism is by elastic back. fetching devices formed while the locking mechanism is formed by the servomechanism with electromagnet.

In both cases the valve contains, as in Pig »1 and 2 shown, a valve body 1, which is divided into two chambers, namely one with a line 3 for supplying the High pressure means connected upstream chamber 2 and a downstream lambs 4, which with an outgoing line 5 leading to a receiving system (not shown). ■

These two upstream and downstream Chambers 2 and 4 are in communication with one another through a passage 6 which is closed by a closure member 7 •can be.

Tig. 1 shows a first embodiment of the invention at which egg the valve is normally closed and only is opened occasionally.

In this embodiment, the closure member is opened 7, which is in the closed position in the strömuiigsaufy / ärts lying chamber 2 is through the mainly an opening mechanism containing an electromagnet 3, , vocei the opening expediently by means of a translatio2: sfcewe £ Uiig of the closure member 7 in the direction of strömui: gsaufwä.rts lying chamber 2 against the "effect of the essentially containing a helical spring 9!, ehließisiiiua he follows.

This Cchraubexifeder 9 is designed so that it is the 7th

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Closing member 7 presses on his seat 10, which is appropriate has an annular part 11 made of plastic, e.g. B. an elastomer, and the side of the upstream Chamber 2 faces.

According to the invention is now in the upstream Chamber 2 a hermetic bellows 12 is provided between the closure member 7 and the inner wall of this chamber so that it isolates at least part of the surfaces of the closure member 7 with the delimitation of a chamber 13 "

In .dem closure member 7 a line 21 is formed, which permanently and in any position of the closure member 7 the chamber 13 with the downstream Chamber 4 connects.

The coil spring that forms the locking mechanism 9 to be developed force can then evidently be relatively small, so that that of the forming the opening mechanism Electromagnet 8 to be delivered power also be relatively small and this electromagnet one can have a small footprint and a low weight.

For this purpose, as in Pig. 1, the closure member 7 is formed by a body of revolution so that there is a central portion 14 for cooperation with the annular, consisting of an elastomer part 11 and an upstream part into the upstream part lying chamber 2 has extending extension 15.

The bellows 12 is now appropriately arranged so that he between one near the end of the strömun ^ - upward extension 15 formed shoulder 15a

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and the inner wall of the chamber 2 located upstream of the flow, this being preferably 12 cylindrical, and is coaxial with the closure member 7.

The bellows 12 is preferably given a mean diameter D which is at least approximately equal to that Diameter D of the central portion 14 of the closure member 7 is at the point at which this mean Section 14 with the ring-shaped carried by the 3itz 10 Part 11 cooperates.

Under these conditions, when the closure member 7 is in the closed position, the resultant of the high pressure forces acting on the assembly formed by the closure member 7 and the bellows 12 is approximately Hull.

The closure member 7 is then on its Gitz 10 only by a force printed / - / oak of. the action of the coil spring 9 and the / Viricung of the located in the downstream Chamber 4 prevailing pressure on the portion of the 7-final link 7, which is in the hammer 13 within of the bellows 12 is due to this force only needs to be sufficient to ensure proper sealing of the valve.

Under these conditions is when the closure member 7 is in the closed position ", the pressure prevailing in the chamber that in the not fed with high pressure Receiving system prevailing pressure, which is of course less than the high pressure and generally in the is the level of atmospheric pressure.

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When the closure member 7 is in the open position, the pressure prevailing in the chamber 13 is the pressure prevailing in the receiving system fed with high pressure, so that it is equal to the high pressure.

If: the closure member 7 is in the open position, it is the resultant of the forces which from on the movable arrangement formed by the closure member 7, the algae 12, the line 21 and the chamber 13 acting cooking pressure, approximated IT

Closing member 7 is then from its seat 1C by the electromagnet 8 kept away, which only the . (Counteracts the action of the helical spring 9, since it is the same There is high pressure around the entire movable assembly.

So it is ία notice that the sole force which the electromagnet 8 must overcome in order to bring about the opening of the closure member 7 and to keep it open, is the force of the helical spring 3, which depends essentially on the tightness conditions between the closure member and his 3ii <; 1G depends. -

The electromagnet 8 is preferably arranged coaxially to the * locking member 7, with a seal, for. B. a sealing _{ring 22 9} between the electromagnet 5 and the Ventilkcr ^ er 1 is provided.

ι ig. 2 shows the embodiment of a valve which is normally open and nor occasionally closed. In this Veutil, the closure member 7, which is in the open position in the downstream lying, liainer 4, is closed by the closing mechanism, which essentially includes an electromagnet 5S, and z.var

00S830 / 0623. BAD ORIEiNAL

expediently by a translocation movement of the closure member 7 in the direction * of the upstream chamber 2 counter to the action of essentially a helical spring 59 containing opening mechanism.

Such a helical spring 59 is then designed so that it holds the closure member 7 away from its Citz 60, which suitably has an annular part 61 made of plastic, for. 5. an elastomer, and the strömungsabwLLrtc lying hammer 4 pulls, van dt is.

du-i £, E £ eiiiüii is now in the upstream chamber 2 a hermetic bellows 62 for the 3rd & k y closing member 7 ui: d of the inner wall of this Fainruer so 'provided that at least ei; a part of the surface of the £ 7 The closing link 7 is isolated with the delimitation of a Zaiamer Sj , wherein a line 71 is formed in the verioJilußgliecL 7, which lu ... C3 ^ it the ströEiui'ig-E & .b / vU.rts lying hammer 4 remains.

Lie larch lie len c! OpeningEaechanicir.uc educational fJscrew celebration 53 za delivering power can then obviously be proportionate small ceiii, so that of which the locking mechanism The power to be delivered also forms the electromagnet 58 Can be veriiälxxiisinäßig small and this electromagnet can have a small footprint and a low weight.

This may advantageously, as shown in FIG. 2, the Ver schlu £ 7 membered lurch a ümdrehuii ^ oi.örper be formed, so that it £ a8j.ru ei-ien middle Absclinitt 64 for cooperation with the ν Gr., The 3itz 6C borne ring-shaped part 61 from a ülastoiner and a strcii ^ urigcaufr / ärts lying, in

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the upstream chamber 2 extending extension 65 has.

The bellows 62 is then conveniently positioned between an extension near the end of the upstream extension 65 formed shoulder 65a and the inner wall of the upstream Chamber 2 is arranged, the bellows 62 preferably being cylindrical and coaxial with the closure member 7 is.

The bellows 62 preferably has a central pressure knife S which is at least approximately equal to the diameter S _{Q of} the central section 64 of the closure member 7 at the point at which this central section cooperates with the annular part 61 carried by the seat 60.

Under these conditions it is evident when the closure member 7 is in the closed position, the resultant of the forces exerted on by the closure member 7 and the arrangement formed by the bellows 62 result from acting high pressure, approximately zero.

The closure member 7 is then only through to its seat 60 one resulting from the "action of the electromagnet 53" Force pressed, which only needs to be sufficient to ensure proper sealing of the valve.

Under these conditions, when the closure member 7 is in the closed position, the pressure prevailing in the chamber 63 is the pressure which is not at high pressure in the The receiving system is fed, which of course is higher than the high pressure and generally in the Is close to the atmosphere pressure.

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When the closure member 7 is in the opening position is located, the pressure prevailing in the container 63 is the pressure in the receiving system fed with the high pressure prevails and is therefore equal to the high pressure.

sWhen the locking member 7 is in the C-open position, is therefore the resultant of the forces which from to the movable arrangement formed by the closure member 7, the bellows 62, the line 71 and the chamber 63 acting high pressure originate, approximately equal to Hull.

The / closure member 7 is then from its .'itz 60 through the coil spring 59 held away.

3s it should therefore be noted that the sole force which of the: Electromagnet 58 must be overcome in order to achieve the Closing member 7 to close, and to keep closed, the force of the coil spring 59 is, so that the force of the Electromagnet 58 essentially depends on the sealing conditions between the closure member 7 and its .jitz 60 depends.

The electromagnet 58 is preferably coaxial with the Closure member 7 arranged, wherein a seal, for. B. a sealing ring 72, between the electromagnet 58 and the Valve body 1 is provided.

The valve according to the invention essentially has the following advantages:

- The operating mechanism has only a low power, which only depends on the force of the locking member on his Citz-holding elastic return devices depends;

the actuating mechanism has a small footprint and a low weight;

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009830/0623 ^BAD

- the seal is perfect;

- The operational safety is very high, since no moving part is guided in a seal;

- as a result of one ehlens a friction between the closure member and thy valve body, the response time is very short "

Patent claims:

06 2 3

Claims (3)

Patent claims: 1. Both in the closed and in the open position responding valve with a valve body having two chambers, one of which is located upstream and connected to a supply line for the high-pressure medium, and the other is located downstream and is connected to a receiving system via an outlet line, wherein Both chambers are in communication with each other through a passage closable by means of a closure member, whereby this closure member can either assume a - closed or open - normal position under the action of elastic restoring means, or can be in an - open or closed random position under the action of a servomechanism can be located, characterized in that a hermetic bellows (12, £> ?.) ix chamber t t.romaufwärts lying is arranged between the closure member (7) and the inner wall of the upstream chamber lying (2) (2) that he at least part of the surfaces of versc The closure member (7) is isolated from the delimitation of a chamber (13, 63), and that a line (21, 71) is formed in the closure member (7) which connects the chamber (13t 63) to the any position of the closure member (7) downstream chamber (4) connects. 2. Valve according to claim 1, which is normally closed and is open occasionally, characterized in that the closure member (7) has a central section (14) which is located in the upstream chamber (2) and, when the valve is closed, one facing the upstream chamber (2) 009830/0623 - 13 - New documents (Art. 7 % 1 Para. 2 No. 1 "Satt 3 of the amendment * v. 4,9. WU _gm - 13 cooperates annular part (11). 3rd valve after. Claim 1, which is normally open and occasionally, is closed, thereby g e k e η η ze i c h η e t that the closure member (7) a has central portion (64) which is located in the downstream chamber (4) and, when the valve is closed, with an annular one facing the downstream chamber (4) Part (61) cooperates. 009830/0623 Blank page